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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
250d07de | 2 | Copyright (C) 1999-2021 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 5 | Largely rewritten by Alan Modra. |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 22 | |
cd123cb7 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 27 | |
4bd7c902 AM |
28 | /* Don't generate unused section symbols. */ |
29 | #define TARGET_KEEP_UNUSED_SECTION_SYMBOLS FALSE | |
30 | ||
3db64b00 | 31 | #include "sysdep.h" |
183e98be | 32 | #include <stdarg.h> |
5bd4f169 | 33 | #include "bfd.h" |
5bd4f169 AM |
34 | #include "bfdlink.h" |
35 | #include "libbfd.h" | |
36 | #include "elf-bfd.h" | |
04c9666a | 37 | #include "elf/ppc64.h" |
5d1634d7 | 38 | #include "elf64-ppc.h" |
58d180e8 | 39 | #include "dwarf2.h" |
5bd4f169 | 40 | |
bb294208 AM |
41 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
42 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 | |
43 | ||
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
46 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 56 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 57 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 58 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 59 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5663e321 AM |
60 | static bfd_reloc_status_type ppc64_elf_prefix_reloc |
61 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 62 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 63 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 64 | static bfd_vma opd_entry_value |
aef36ac1 | 65 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 66 | |
6d00b590 | 67 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 68 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 69 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
70 | #define TARGET_BIG_NAME "elf64-powerpc" |
71 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 72 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
73 | #define ELF_MACHINE_CODE EM_PPC64 |
74 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
75 | #define ELF_COMMONPAGESIZE 0x1000 |
76 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
77 | #define elf_info_to_howto ppc64_elf_info_to_howto |
78 | ||
79 | #define elf_backend_want_got_sym 0 | |
80 | #define elf_backend_want_plt_sym 0 | |
81 | #define elf_backend_plt_alignment 3 | |
82 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 83 | #define elf_backend_got_header_size 8 |
5474d94f | 84 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
85 | #define elf_backend_can_gc_sections 1 |
86 | #define elf_backend_can_refcount 1 | |
87 | #define elf_backend_rela_normal 1 | |
64f52338 | 88 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 89 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 90 | |
e717da7e | 91 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 92 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 93 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
94 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
95 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
96 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
97 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 98 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 99 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 100 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
101 | |
102 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
103 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
104 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 105 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 106 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 107 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 108 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 109 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 110 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 111 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 112 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 113 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 114 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 115 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 116 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
117 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
118 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 119 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
c9405344 | 120 | #define elf_backend_always_size_sections ppc64_elf_edit |
ad8e1ba5 | 121 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections |
a345bc8d | 122 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 123 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 124 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
125 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
126 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
127 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
128 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 129 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 130 | #define elf_backend_special_sections ppc64_elf_special_sections |
bf577467 | 131 | #define elf_backend_section_flags ppc64_elf_section_flags |
6911b7dc | 132 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 133 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 134 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 135 | |
5bd4f169 AM |
136 | /* The name of the dynamic interpreter. This is put in the .interp |
137 | section. */ | |
138 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
139 | ||
140 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 141 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 142 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
143 | |
144 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 145 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 146 | |
a078d95a AM |
147 | /* Offsets to some stack save slots. */ |
148 | #define STK_LR 16 | |
149 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 150 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
151 | CR save slot. Used only by optimised __tls_get_addr call stub, |
152 | relying on __tls_get_addr_opt not saving CR.. */ | |
153 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
154 | ||
5bd4f169 | 155 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 156 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
157 | /* TOC base alignment. */ |
158 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
159 | |
160 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
161 | #define TP_OFFSET 0x7000 | |
162 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 163 | |
ad8e1ba5 AM |
164 | /* .plt call stub instructions. The normal stub is like this, but |
165 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 166 | insert an addi to adjust r11. */ |
a078d95a | 167 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
168 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
169 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
170 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
171 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
172 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
173 | #define BCTR 0x4e800420 /* bctr */ |
174 | ||
07d6d2b8 | 175 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
176 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
177 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
178 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
179 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
180 | ||
181 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
182 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
183 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
184 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
185 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
186 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
187 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 188 | |
71a39c98 | 189 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 190 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 191 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 192 | |
07d6d2b8 AM |
193 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
194 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
195 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 196 | |
04bdff6a | 197 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 198 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 199 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 200 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
201 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
202 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 203 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 204 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 205 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 206 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 207 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 208 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 209 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
210 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
211 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
212 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
213 | #define PADDI_R12_PC 0x0610000039800000ULL |
214 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 215 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 216 | |
3cd7c7d7 AM |
217 | /* __glink_PLTresolve stub instructions. We enter with the index in |
218 | R0 for ELFv1, and the address of a glink branch in R12 for ELFv2. */ | |
9e390558 | 219 | #define GLINK_PLTRESOLVE_SIZE(htab) \ |
3cd7c7d7 | 220 | (8u + (htab->opd_abi ? 11 * 4 : htab->has_plt_localentry0 ? 14 * 4 : 13 * 4)) |
ee4bf8d2 AM |
221 | /* 0: */ |
222 | /* .quad plt0-1f */ | |
223 | /* __glink: */ | |
224 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
225 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
226 | /* 1: */ | |
227 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 228 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 229 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
230 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
231 | /* ld %12,0(%11) */ | |
232 | /* ld %2,8(%11) */ | |
233 | /* mtctr %12 */ | |
234 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 235 | /* bctr */ |
3cd7c7d7 AM |
236 | |
237 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ | |
238 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
239 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
240 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
241 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
242 | #define LD_R0_0R11 0xe80b0000 /* ld %r0,0(%r11) */ | |
243 | #define ADD_R11_R0_R11 0x7d605a14 /* add %r11,%r0,%r11 */ | |
5d1634d7 AM |
244 | |
245 | /* Pad with this. */ | |
246 | #define NOP 0x60000000 | |
247 | ||
721956f4 AM |
248 | /* Some other nops. */ |
249 | #define CROR_151515 0x4def7b82 | |
250 | #define CROR_313131 0x4ffffb82 | |
251 | ||
cedb70c5 | 252 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
253 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
254 | #define B_DOT 0x48000000 /* b . */ | |
255 | ||
256 | /* After that, we need two instructions to load the index, followed by | |
257 | a branch. */ | |
258 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 259 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 260 | |
deb0e272 AM |
261 | /* Instructions used by the save and restore reg functions. */ |
262 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
263 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
264 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
265 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
266 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
267 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
268 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
269 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
270 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
271 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
272 | #define BLR 0x4e800020 /* blr */ |
273 | ||
41bd81ab AM |
274 | /* Since .opd is an array of descriptors and each entry will end up |
275 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
276 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 277 | relocate .opd without reloc entries. */ |
41bd81ab AM |
278 | #ifndef NO_OPD_RELOCS |
279 | #define NO_OPD_RELOCS 0 | |
280 | #endif | |
810d4e75 | 281 | |
a4b6fadd AM |
282 | #ifndef ARRAY_SIZE |
283 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
284 | #endif | |
285 | ||
810d4e75 AM |
286 | static inline int |
287 | abiversion (bfd *abfd) | |
288 | { | |
289 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
290 | } | |
291 | ||
292 | static inline void | |
293 | set_abiversion (bfd *abfd, int ver) | |
294 | { | |
295 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
296 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
297 | } | |
5bd4f169 AM |
298 | \f |
299 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
300 | /* Like other ELF RELA targets that don't apply multiple |
301 | field-altering relocations to the same localation, src_mask is | |
302 | always zero and pcrel_offset is the same as pc_relative. | |
303 | PowerPC can always use a zero bitpos, even when the field is not at | |
304 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
305 | and bitpos=2 which matches the ABI description, or as we do here, | |
306 | rightshift=0, bitsize=26 and bitpos=0. */ | |
307 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
308 | complain, special_func) \ | |
309 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
310 | complain_overflow_ ## complain, special_func, \ | |
311 | #type, FALSE, 0, mask, pc_relative) | |
312 | ||
04c9666a | 313 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 314 | |
f3185997 NC |
315 | static reloc_howto_type ppc64_elf_howto_raw[] = |
316 | { | |
5bd4f169 | 317 | /* This reloc does nothing. */ |
46807bf4 AM |
318 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
319 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
320 | |
321 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
322 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
323 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
324 | |
325 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
326 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
327 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
328 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
329 | |
330 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
331 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
332 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
333 | |
334 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
335 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
336 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
337 | |
338 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
339 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
340 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
341 | |
342 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
343 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
344 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
345 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
346 | |
347 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
348 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
349 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
350 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
351 | |
352 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
353 | indicate that the branch is expected to be taken. The lower two | |
354 | bits must be zero. */ | |
46807bf4 AM |
355 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
356 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
357 | |
358 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
359 | indicate that the branch is not expected to be taken. The lower | |
360 | two bits must be zero. */ | |
46807bf4 AM |
361 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
362 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
363 | |
364 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
365 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
366 | ppc64_elf_branch_reloc), | |
5bd4f169 | 367 | |
05d0e962 | 368 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
369 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
370 | ppc64_elf_branch_reloc), | |
05d0e962 | 371 | |
5bd4f169 | 372 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
373 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
374 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
375 | |
376 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
377 | the branch is expected to be taken. The lower two bits must be | |
378 | zero. */ | |
46807bf4 AM |
379 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
380 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
381 | |
382 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
383 | the branch is not expected to be taken. The lower two bits must | |
384 | be zero. */ | |
46807bf4 AM |
385 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
386 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
387 | |
388 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
389 | symbol. */ | |
46807bf4 AM |
390 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
391 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
392 | |
393 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
394 | the symbol. */ | |
46807bf4 AM |
395 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
396 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
397 | |
398 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
399 | the symbol. */ | |
46807bf4 AM |
400 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
401 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
402 | |
403 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
404 | the symbol. */ | |
46807bf4 AM |
405 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
406 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
407 | |
408 | /* This is used only by the dynamic linker. The symbol should exist | |
409 | both in the object being run and in some shared library. The | |
410 | dynamic linker copies the data addressed by the symbol from the | |
411 | shared library into the object, because the object being | |
412 | run has to have the data at some particular address. */ | |
46807bf4 AM |
413 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
414 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
415 | |
416 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
417 | entries. */ | |
46807bf4 AM |
418 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
419 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
420 | |
421 | /* Created by the link editor. Marks a procedure linkage table | |
422 | entry for a symbol. */ | |
46807bf4 AM |
423 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
424 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
425 | |
426 | /* Used only by the dynamic linker. When the object is run, this | |
427 | doubleword64 is set to the load address of the object, plus the | |
428 | addend. */ | |
46807bf4 AM |
429 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
430 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
431 | |
432 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
433 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
434 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
435 | |
436 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
437 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
438 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
439 | |
440 | /* 32-bit PC relative. */ | |
46807bf4 AM |
441 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
442 | bfd_elf_generic_reloc), | |
5bd4f169 | 443 | |
10ed1bba | 444 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
445 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
446 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
447 | |
448 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
449 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
450 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
451 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
452 | |
453 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
454 | the symbol. */ | |
46807bf4 AM |
455 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
456 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
457 | |
458 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
459 | the symbol. */ | |
46807bf4 AM |
460 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
461 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
462 | |
463 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
464 | the symbol. */ | |
46807bf4 AM |
465 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
466 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 467 | |
c061c2d8 | 468 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
469 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
470 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 471 | |
c061c2d8 | 472 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
473 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
474 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
475 | |
476 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
477 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
478 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
479 | |
480 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
481 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
482 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 483 | |
04c9666a | 484 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
485 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
486 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
487 | |
488 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
489 | ||
490 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
491 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
492 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
493 | |
494 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
495 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
496 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
497 | |
498 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
499 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
500 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
501 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
502 | |
503 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
504 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
505 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
506 | |
507 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
508 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
509 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
510 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
511 | |
512 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
513 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
514 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
515 | |
516 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
517 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
518 | bfd_elf_generic_reloc), | |
5bd4f169 | 519 | |
cedb70c5 | 520 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
521 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
522 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
523 | |
524 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
525 | table. */ | |
526 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
527 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
528 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
529 | |
530 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 531 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
532 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
533 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
534 | |
535 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 536 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
537 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
538 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
539 | |
540 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 541 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
542 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
543 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
544 | |
545 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
546 | contents of the low 16 bits, treated as a signed number, is | |
547 | negative. */ | |
5bd4f169 | 548 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
549 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
550 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
551 | |
552 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 553 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
554 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
555 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
556 | |
557 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
558 | value to relocate may (!) refer to a PLT entry which the link | |
559 | editor (a) may replace with the symbol value. If the link editor | |
560 | is unable to fully resolve the symbol, it may (b) create a PLT | |
561 | entry and store the address to the new PLT entry in the GOT. | |
562 | This permits lazy resolution of function symbols at run time. | |
563 | The link editor may also skip all of this and just (c) emit a | |
564 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
565 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
566 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
567 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
568 | |
569 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
570 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
571 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
572 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
573 | |
574 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
575 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
576 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
577 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
578 | |
579 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
580 | 1 if the contents of the low 16 bits, treated as a signed number, | |
581 | is negative. */ | |
582 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
583 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
584 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
585 | |
586 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
587 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
588 | bfd_elf_generic_reloc), | |
411e1bfb AM |
589 | |
590 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
591 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
592 | bfd_elf_generic_reloc), | |
411e1bfb AM |
593 | |
594 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
595 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
596 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
597 | |
598 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
599 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
600 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
601 | |
602 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
603 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
604 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
605 | |
606 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
607 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
608 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
609 | |
610 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
611 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
612 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
613 | |
614 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
615 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
616 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
617 | |
618 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
619 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
620 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
621 | |
622 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
623 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
624 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
625 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
626 | |
627 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
628 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
629 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
630 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 631 | |
727fc41e | 632 | /* Marker relocs for TLS. */ |
46807bf4 AM |
633 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
634 | bfd_elf_generic_reloc), | |
635 | ||
636 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
637 | bfd_elf_generic_reloc), | |
638 | ||
639 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
640 | bfd_elf_generic_reloc), | |
727fc41e | 641 | |
23cedd1d AM |
642 | /* Marker reloc for optimizing r2 save in prologue rather than on |
643 | each plt call stub. */ | |
46807bf4 AM |
644 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
645 | bfd_elf_generic_reloc), | |
3b421ab3 | 646 | |
23cedd1d | 647 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
648 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
649 | bfd_elf_generic_reloc), | |
650 | ||
651 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
652 | bfd_elf_generic_reloc), | |
23cedd1d | 653 | |
411e1bfb AM |
654 | /* Computes the load module index of the load module that contains the |
655 | definition of its TLS sym. */ | |
46807bf4 AM |
656 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
657 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
658 | |
659 | /* Computes a dtv-relative displacement, the difference between the value | |
660 | of sym+add and the base address of the thread-local storage block that | |
661 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
662 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
663 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
664 | |
665 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
666 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
667 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
668 | |
669 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
670 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
671 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
672 | |
673 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
674 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
675 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
676 | |
677 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
678 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
679 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
680 | |
681 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
682 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
683 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
684 | |
685 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
686 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
687 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
688 | |
689 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
690 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
691 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
692 | |
693 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
694 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
695 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
696 | |
697 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
698 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
699 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
700 | |
701 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
702 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
703 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
704 | |
705 | /* Computes a tp-relative displacement, the difference between the value of | |
706 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
707 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
708 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
709 | |
710 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
711 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
712 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
713 | |
714 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
715 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
716 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
717 | |
718 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
719 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
720 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
721 | |
722 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
723 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
724 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
725 | |
726 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
727 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
728 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
729 | |
730 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
731 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
732 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
733 | |
734 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
735 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
736 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
737 | |
738 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
739 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
740 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
741 | |
742 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
743 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
744 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
745 | |
746 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
747 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
748 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
749 | |
750 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
751 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
752 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
753 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
754 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 755 | |
411e1bfb | 756 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
757 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
758 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 759 | |
411e1bfb | 760 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
761 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
762 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 763 | |
411e1bfb | 764 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
765 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
766 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 767 | |
411e1bfb AM |
768 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
769 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
770 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
771 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
772 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 773 | |
411e1bfb | 774 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
775 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
776 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 777 | |
411e1bfb | 778 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
779 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
780 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 781 | |
411e1bfb | 782 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
783 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
784 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 785 | |
411e1bfb AM |
786 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
787 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
788 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
789 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 790 | |
411e1bfb | 791 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
792 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
793 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 794 | |
411e1bfb | 795 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
796 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
797 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 798 | |
411e1bfb | 799 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
800 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
801 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
802 | |
803 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
804 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
805 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
806 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 807 | |
411e1bfb | 808 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
809 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
810 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 811 | |
411e1bfb | 812 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
813 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
814 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 815 | |
411e1bfb | 816 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
817 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
818 | ppc64_elf_unhandled_reloc), | |
819 | ||
820 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
821 | ppc64_elf_unhandled_reloc), | |
822 | ||
823 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
824 | bfd_elf_generic_reloc), | |
e054468f | 825 | |
25f23106 | 826 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
827 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
828 | bfd_elf_generic_reloc), | |
25f23106 AM |
829 | |
830 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
831 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
832 | bfd_elf_generic_reloc), | |
25f23106 AM |
833 | |
834 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
835 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
836 | bfd_elf_generic_reloc), | |
25f23106 AM |
837 | |
838 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
839 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
840 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
841 | ppc64_elf_ha_reloc), | |
25f23106 | 842 | |
4a969973 AM |
843 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
844 | bfd_elf_generic_reloc), | |
845 | ||
846 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
847 | ppc64_elf_ha_reloc), | |
848 | ||
849 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
850 | bfd_elf_generic_reloc), | |
851 | ||
852 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
853 | ppc64_elf_ha_reloc), | |
854 | ||
855 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
856 | bfd_elf_generic_reloc), | |
857 | ||
858 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
859 | ppc64_elf_ha_reloc), | |
860 | ||
a680de9a | 861 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
862 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
863 | ppc64_elf_ha_reloc), | |
a680de9a | 864 | |
7ba71655 | 865 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
866 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
867 | ppc64_elf_ha_reloc), | |
7ba71655 | 868 | |
f9c6b907 | 869 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
870 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
871 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
872 | |
873 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
874 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
875 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
876 | |
877 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
878 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
879 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
880 | |
881 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
882 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
883 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
884 | |
885 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
886 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
887 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
888 | |
889 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
890 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
891 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 892 | |
006589cf | 893 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
894 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
895 | bfd_elf_generic_reloc), | |
006589cf | 896 | |
45965137 | 897 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
898 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
899 | bfd_elf_generic_reloc), | |
45965137 | 900 | |
5663e321 AM |
901 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, FALSE, dont, |
902 | bfd_elf_generic_reloc), | |
903 | ||
904 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, FALSE, dont, | |
905 | bfd_elf_generic_reloc), | |
906 | ||
907 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, FALSE, dont, | |
908 | bfd_elf_generic_reloc), | |
909 | ||
910 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
911 | ppc64_elf_prefix_reloc), | |
912 | ||
913 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, dont, | |
914 | ppc64_elf_prefix_reloc), | |
915 | ||
916 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
917 | ppc64_elf_prefix_reloc), | |
918 | ||
919 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
920 | ppc64_elf_prefix_reloc), | |
921 | ||
922 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
923 | ppc64_elf_prefix_reloc), | |
924 | ||
925 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
926 | ppc64_elf_unhandled_reloc), | |
927 | ||
928 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
929 | ppc64_elf_unhandled_reloc), | |
930 | ||
931 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
932 | ppc64_elf_unhandled_reloc), | |
933 | ||
c213164a AM |
934 | HOW (R_PPC64_TPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, |
935 | ppc64_elf_unhandled_reloc), | |
936 | ||
937 | HOW (R_PPC64_DTPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
938 | ppc64_elf_unhandled_reloc), | |
939 | ||
87c69f97 | 940 | HOW (R_PPC64_GOT_TLSGD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
941 | ppc64_elf_unhandled_reloc), |
942 | ||
87c69f97 | 943 | HOW (R_PPC64_GOT_TLSLD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
944 | ppc64_elf_unhandled_reloc), |
945 | ||
87c69f97 | 946 | HOW (R_PPC64_GOT_TPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
947 | ppc64_elf_unhandled_reloc), |
948 | ||
87c69f97 | 949 | HOW (R_PPC64_GOT_DTPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
950 | ppc64_elf_unhandled_reloc), |
951 | ||
5663e321 AM |
952 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, FALSE, dont, |
953 | bfd_elf_generic_reloc), | |
954 | ||
955 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, FALSE, dont, | |
956 | ppc64_elf_ha_reloc), | |
957 | ||
958 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, FALSE, dont, | |
959 | bfd_elf_generic_reloc), | |
960 | ||
961 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, FALSE, dont, | |
962 | ppc64_elf_ha_reloc), | |
963 | ||
964 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, TRUE, dont, | |
965 | bfd_elf_generic_reloc), | |
966 | ||
967 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, TRUE, dont, | |
968 | ppc64_elf_ha_reloc), | |
969 | ||
970 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, TRUE, dont, | |
971 | bfd_elf_generic_reloc), | |
972 | ||
973 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, TRUE, dont, | |
974 | ppc64_elf_ha_reloc), | |
975 | ||
976 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, FALSE, signed, | |
977 | ppc64_elf_prefix_reloc), | |
978 | ||
979 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, TRUE, signed, | |
980 | ppc64_elf_prefix_reloc), | |
981 | ||
5bd4f169 | 982 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
983 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
984 | NULL), | |
5bd4f169 AM |
985 | |
986 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
987 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
988 | NULL), | |
5bd4f169 AM |
989 | }; |
990 | ||
991 | \f | |
992 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
993 | be done. */ | |
994 | ||
995 | static void | |
4ce794b7 | 996 | ppc_howto_init (void) |
5bd4f169 AM |
997 | { |
998 | unsigned int i, type; | |
999 | ||
a4b6fadd | 1000 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
1001 | { |
1002 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 1003 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
1004 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
1005 | } | |
1006 | } | |
1007 | ||
1008 | static reloc_howto_type * | |
87c69f97 | 1009 | ppc64_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
5bd4f169 | 1010 | { |
411e1bfb | 1011 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1012 | |
1013 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1014 | /* Initialize howto table if needed. */ | |
1015 | ppc_howto_init (); | |
1016 | ||
4ce794b7 | 1017 | switch (code) |
5bd4f169 AM |
1018 | { |
1019 | default: | |
f3185997 | 1020 | /* xgettext:c-format */ |
2cdcc330 AM |
1021 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
1022 | (int) code); | |
f3185997 | 1023 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 1024 | return NULL; |
5bd4f169 | 1025 | |
411e1bfb AM |
1026 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1027 | break; | |
1028 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1029 | break; | |
1030 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1031 | break; | |
1032 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1033 | break; | |
1034 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1035 | break; | |
1036 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1037 | break; | |
f9c6b907 AM |
1038 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1039 | break; | |
411e1bfb | 1040 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1041 | break; |
f9c6b907 AM |
1042 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1043 | break; | |
411e1bfb | 1044 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1045 | break; |
411e1bfb | 1046 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1047 | break; |
411e1bfb | 1048 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1049 | break; |
411e1bfb | 1050 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1051 | break; |
05d0e962 AM |
1052 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1053 | break; | |
411e1bfb | 1054 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1055 | break; |
411e1bfb | 1056 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1057 | break; |
411e1bfb | 1058 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1059 | break; |
411e1bfb | 1060 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1061 | break; |
411e1bfb | 1062 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1063 | break; |
411e1bfb | 1064 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1065 | break; |
411e1bfb | 1066 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1067 | break; |
411e1bfb | 1068 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1069 | break; |
411e1bfb | 1070 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1071 | break; |
411e1bfb | 1072 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1073 | break; |
411e1bfb | 1074 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1075 | break; |
411e1bfb | 1076 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1077 | break; |
411e1bfb | 1078 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1079 | break; |
411e1bfb | 1080 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1081 | break; |
411e1bfb | 1082 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1083 | break; |
411e1bfb | 1084 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1085 | break; |
411e1bfb | 1086 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1087 | break; |
411e1bfb | 1088 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1089 | break; |
411e1bfb | 1090 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1091 | break; |
411e1bfb | 1092 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1093 | break; |
411e1bfb | 1094 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1095 | break; |
411e1bfb | 1096 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1097 | break; |
411e1bfb | 1098 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1099 | break; |
411e1bfb | 1100 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1101 | break; |
411e1bfb | 1102 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1103 | break; |
411e1bfb | 1104 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1105 | break; |
411e1bfb | 1106 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1107 | break; |
411e1bfb | 1108 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1109 | break; |
411e1bfb | 1110 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1111 | break; |
411e1bfb | 1112 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1113 | break; |
411e1bfb | 1114 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1115 | break; |
411e1bfb | 1116 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1117 | break; |
411e1bfb | 1118 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1119 | break; |
411e1bfb | 1120 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1121 | break; |
411e1bfb | 1122 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1123 | break; |
411e1bfb | 1124 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1125 | break; |
411e1bfb | 1126 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1127 | break; |
411e1bfb | 1128 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1129 | break; |
411e1bfb | 1130 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1131 | break; |
411e1bfb | 1132 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1133 | break; |
411e1bfb | 1134 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1135 | break; |
411e1bfb | 1136 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1137 | break; |
411e1bfb | 1138 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1139 | break; |
411e1bfb | 1140 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1141 | break; |
411e1bfb | 1142 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1143 | break; |
411e1bfb | 1144 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1145 | break; |
411e1bfb | 1146 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1147 | break; |
411e1bfb | 1148 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1149 | break; |
c213164a | 1150 | case BFD_RELOC_PPC64_TLS_PCREL: |
411e1bfb | 1151 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1152 | break; |
727fc41e AM |
1153 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1154 | break; | |
1155 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1156 | break; | |
411e1bfb | 1157 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1158 | break; |
411e1bfb | 1159 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1160 | break; |
411e1bfb | 1161 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1162 | break; |
411e1bfb | 1163 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1164 | break; |
f9c6b907 AM |
1165 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1166 | break; | |
411e1bfb | 1167 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1168 | break; |
f9c6b907 AM |
1169 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1170 | break; | |
411e1bfb | 1171 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1172 | break; |
411e1bfb AM |
1173 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1174 | break; | |
1175 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1176 | break; | |
1177 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1178 | break; | |
f9c6b907 AM |
1179 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1180 | break; | |
411e1bfb AM |
1181 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1182 | break; | |
f9c6b907 AM |
1183 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1184 | break; | |
411e1bfb AM |
1185 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1186 | break; | |
1187 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1188 | break; | |
1189 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1190 | break; | |
1191 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1192 | break; | |
1193 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1194 | break; | |
1195 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1196 | break; | |
1197 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1198 | break; | |
1199 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1200 | break; | |
1201 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1202 | break; | |
1203 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1204 | break; | |
1205 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1206 | break; | |
1207 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1208 | break; | |
1209 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1210 | break; | |
1211 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1212 | break; | |
1213 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1214 | break; | |
1215 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1216 | break; | |
1217 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1218 | break; | |
1219 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1220 | break; | |
1221 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1222 | break; | |
1223 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1224 | break; | |
1225 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1226 | break; | |
1227 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1228 | break; | |
1229 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1230 | break; | |
1231 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1232 | break; | |
1233 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1234 | break; | |
1235 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1236 | break; | |
1237 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1238 | break; | |
1239 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1240 | break; | |
1241 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1242 | break; | |
25f23106 AM |
1243 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1244 | break; | |
1245 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1246 | break; | |
1247 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1248 | break; | |
1249 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1250 | break; | |
4a969973 AM |
1251 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1252 | break; | |
1253 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1254 | break; | |
1255 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1256 | break; | |
1257 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1258 | break; | |
1259 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1260 | break; | |
1261 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1262 | break; | |
7ba71655 AM |
1263 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1264 | break; | |
a680de9a PB |
1265 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1266 | break; | |
006589cf AM |
1267 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1268 | break; | |
45965137 AM |
1269 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1270 | break; | |
5663e321 AM |
1271 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1272 | break; | |
1273 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1274 | break; | |
1275 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1276 | break; | |
1277 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1278 | break; | |
1279 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1280 | break; | |
1281 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1282 | break; | |
1283 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1284 | break; | |
c213164a AM |
1285 | case BFD_RELOC_PPC64_TPREL34: r = R_PPC64_TPREL34; |
1286 | break; | |
1287 | case BFD_RELOC_PPC64_DTPREL34: r = R_PPC64_DTPREL34; | |
1288 | break; | |
87c69f97 | 1289 | case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34: r = R_PPC64_GOT_TLSGD_PCREL34; |
c213164a | 1290 | break; |
87c69f97 | 1291 | case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34: r = R_PPC64_GOT_TLSLD_PCREL34; |
c213164a | 1292 | break; |
87c69f97 | 1293 | case BFD_RELOC_PPC64_GOT_TPREL_PCREL34: r = R_PPC64_GOT_TPREL_PCREL34; |
c213164a | 1294 | break; |
87c69f97 | 1295 | case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34: r = R_PPC64_GOT_DTPREL_PCREL34; |
c213164a | 1296 | break; |
5663e321 AM |
1297 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; |
1298 | break; | |
1299 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1300 | break; | |
1301 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1302 | break; | |
1303 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1304 | break; | |
1305 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1306 | break; | |
1307 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1308 | break; | |
1309 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1310 | break; | |
1311 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1312 | break; | |
1313 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1314 | break; | |
1315 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1316 | break; | |
411e1bfb AM |
1317 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1318 | break; | |
1319 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1320 | break; |
1321 | } | |
1322 | ||
4ce794b7 | 1323 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1324 | }; |
1325 | ||
157090f7 | 1326 | static reloc_howto_type * |
87c69f97 | 1327 | ppc64_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
157090f7 AM |
1328 | { |
1329 | unsigned int i; | |
87c69f97 AM |
1330 | static char *compat_map[][2] = { |
1331 | { "R_PPC64_GOT_TLSGD34", "R_PPC64_GOT_TLSGD_PCREL34" }, | |
1332 | { "R_PPC64_GOT_TLSLD34", "R_PPC64_GOT_TLSLD_PCREL34" }, | |
1333 | { "R_PPC64_GOT_TPREL34", "R_PPC64_GOT_TPREL_PCREL34" }, | |
1334 | { "R_PPC64_GOT_DTPREL34", "R_PPC64_GOT_DTPREL_PCREL34" } | |
1335 | }; | |
157090f7 | 1336 | |
a4b6fadd | 1337 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1338 | if (ppc64_elf_howto_raw[i].name != NULL |
1339 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1340 | return &ppc64_elf_howto_raw[i]; | |
1341 | ||
87c69f97 AM |
1342 | /* Handle old names of relocations in case they were used by |
1343 | .reloc directives. | |
1344 | FIXME: Remove this soon. Mapping the reloc names is very likely | |
1345 | completely unnecessary. */ | |
1346 | for (i = 0; i < ARRAY_SIZE (compat_map); i++) | |
1347 | if (strcasecmp (compat_map[i][0], r_name) == 0) | |
1348 | { | |
1349 | _bfd_error_handler (_("warning: %s should be used rather than %s"), | |
1350 | compat_map[i][1], compat_map[i][0]); | |
1351 | return ppc64_elf_reloc_name_lookup (abfd, compat_map[i][1]); | |
1352 | } | |
1353 | ||
157090f7 AM |
1354 | return NULL; |
1355 | } | |
1356 | ||
5bd4f169 AM |
1357 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1358 | ||
f3185997 | 1359 | static bfd_boolean |
4aef7643 | 1360 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1361 | Elf_Internal_Rela *dst) |
5bd4f169 | 1362 | { |
65f38f15 AM |
1363 | unsigned int type; |
1364 | ||
ef60b7ff | 1365 | /* Initialize howto table if needed. */ |
5bd4f169 | 1366 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1367 | ppc_howto_init (); |
1368 | ||
65f38f15 | 1369 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1370 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1371 | { |
695344c0 | 1372 | /* xgettext:c-format */ |
0aa13fee | 1373 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1374 | abfd, type); |
f3185997 NC |
1375 | bfd_set_error (bfd_error_bad_value); |
1376 | return FALSE; | |
d0fb9a8d | 1377 | } |
65f38f15 | 1378 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1379 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1380 | { | |
1381 | /* xgettext:c-format */ | |
1382 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1383 | abfd, type); | |
1384 | bfd_set_error (bfd_error_bad_value); | |
1385 | return FALSE; | |
1386 | } | |
2cdcc330 | 1387 | |
f3185997 | 1388 | return TRUE; |
5bd4f169 AM |
1389 | } |
1390 | ||
04c9666a | 1391 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1392 | |
1393 | static bfd_reloc_status_type | |
4ce794b7 AM |
1394 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1395 | void *data, asection *input_section, | |
1396 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1397 | { |
a680de9a PB |
1398 | enum elf_ppc64_reloc_type r_type; |
1399 | long insn; | |
1400 | bfd_size_type octets; | |
3de43e7b | 1401 | bfd_vma value; |
a680de9a | 1402 | |
805fc799 AM |
1403 | /* If this is a relocatable link (output_bfd test tells us), just |
1404 | call the generic function. Any adjustment will be done at final | |
1405 | link time. */ | |
1406 | if (output_bfd != NULL) | |
cedb70c5 | 1407 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1408 | input_section, output_bfd, error_message); |
1409 | ||
5663e321 AM |
1410 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1411 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1412 | doesn't matter. */ |
a680de9a | 1413 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1414 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1415 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1416 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1417 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1418 | reloc_entry->addend += 1ULL << 33; | |
1419 | else | |
1420 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1421 | if (r_type != R_PPC64_REL16DX_HA) |
1422 | return bfd_reloc_continue; | |
1423 | ||
1424 | value = 0; | |
1425 | if (!bfd_is_com_section (symbol->section)) | |
1426 | value = symbol->value; | |
1427 | value += (reloc_entry->addend | |
1428 | + symbol->section->output_offset | |
1429 | + symbol->section->output_section->vma); | |
1430 | value -= (reloc_entry->address | |
1431 | + input_section->output_offset | |
1432 | + input_section->output_section->vma); | |
3de43e7b | 1433 | value = (bfd_signed_vma) value >> 16; |
a680de9a | 1434 | |
bb294208 | 1435 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
a680de9a PB |
1436 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1437 | insn &= ~0x1fffc1; | |
3de43e7b | 1438 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1439 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1440 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1441 | return bfd_reloc_overflow; |
1442 | return bfd_reloc_ok; | |
805fc799 | 1443 | } |
5bd4f169 | 1444 | |
2441e016 AM |
1445 | static bfd_reloc_status_type |
1446 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1447 | void *data, asection *input_section, | |
1448 | bfd *output_bfd, char **error_message) | |
1449 | { | |
1450 | if (output_bfd != NULL) | |
1451 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1452 | input_section, output_bfd, error_message); | |
1453 | ||
699733f6 AM |
1454 | if (strcmp (symbol->section->name, ".opd") == 0 |
1455 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1456 | { |
1457 | bfd_vma dest = opd_entry_value (symbol->section, | |
1458 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1459 | NULL, NULL, FALSE); |
2441e016 AM |
1460 | if (dest != (bfd_vma) -1) |
1461 | reloc_entry->addend = dest - (symbol->value | |
1462 | + symbol->section->output_section->vma | |
1463 | + symbol->section->output_offset); | |
1464 | } | |
810d4e75 AM |
1465 | else |
1466 | { | |
1467 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1468 | ||
1469 | if (symbol->section->owner != abfd | |
9f284bf9 | 1470 | && symbol->section->owner != NULL |
810d4e75 AM |
1471 | && abiversion (symbol->section->owner) >= 2) |
1472 | { | |
1473 | unsigned int i; | |
1474 | ||
1475 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1476 | { | |
1477 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1478 | ||
1479 | if (strcmp (symdef->name, symbol->name) == 0) | |
1480 | { | |
1481 | elfsym = (elf_symbol_type *) symdef; | |
1482 | break; | |
1483 | } | |
1484 | } | |
1485 | } | |
1486 | reloc_entry->addend | |
1487 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1488 | } | |
2441e016 AM |
1489 | return bfd_reloc_continue; |
1490 | } | |
1491 | ||
805fc799 | 1492 | static bfd_reloc_status_type |
4ce794b7 AM |
1493 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1494 | void *data, asection *input_section, | |
1495 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1496 | { |
1497 | long insn; | |
04c9666a | 1498 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1499 | bfd_size_type octets; |
794e51c0 AM |
1500 | /* Assume 'at' branch hints. */ |
1501 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1502 | |
1503 | /* If this is a relocatable link (output_bfd test tells us), just | |
1504 | call the generic function. Any adjustment will be done at final | |
1505 | link time. */ | |
5bd4f169 | 1506 | if (output_bfd != NULL) |
cedb70c5 | 1507 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1508 | input_section, output_bfd, error_message); |
1509 | ||
bb294208 | 1510 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1511 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1512 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1513 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1514 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1515 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1516 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1517 | |
794e51c0 | 1518 | if (is_isa_v2) |
5bd4f169 | 1519 | { |
805fc799 AM |
1520 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1521 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1522 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1523 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1524 | insn |= 0x02 << 21; | |
1525 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1526 | insn |= 0x08 << 21; | |
1527 | else | |
2441e016 | 1528 | goto out; |
5bd4f169 | 1529 | } |
805fc799 AM |
1530 | else |
1531 | { | |
1532 | bfd_vma target = 0; | |
1533 | bfd_vma from; | |
5bd4f169 | 1534 | |
805fc799 AM |
1535 | if (!bfd_is_com_section (symbol->section)) |
1536 | target = symbol->value; | |
1537 | target += symbol->section->output_section->vma; | |
1538 | target += symbol->section->output_offset; | |
1539 | target += reloc_entry->addend; | |
5bd4f169 | 1540 | |
805fc799 AM |
1541 | from = (reloc_entry->address |
1542 | + input_section->output_offset | |
1543 | + input_section->output_section->vma); | |
5bd4f169 | 1544 | |
805fc799 AM |
1545 | /* Invert 'y' bit if not the default. */ |
1546 | if ((bfd_signed_vma) (target - from) < 0) | |
1547 | insn ^= 0x01 << 21; | |
1548 | } | |
4ce794b7 | 1549 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1550 | out: |
1551 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1552 | input_section, output_bfd, error_message); | |
805fc799 | 1553 | } |
5bd4f169 | 1554 | |
805fc799 | 1555 | static bfd_reloc_status_type |
4ce794b7 AM |
1556 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1557 | void *data, asection *input_section, | |
1558 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1559 | { |
1560 | /* If this is a relocatable link (output_bfd test tells us), just | |
1561 | call the generic function. Any adjustment will be done at final | |
1562 | link time. */ | |
1563 | if (output_bfd != NULL) | |
cedb70c5 | 1564 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1565 | input_section, output_bfd, error_message); |
5bd4f169 | 1566 | |
805fc799 AM |
1567 | /* Subtract the symbol section base address. */ |
1568 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1569 | return bfd_reloc_continue; |
1570 | } | |
1571 | ||
805fc799 | 1572 | static bfd_reloc_status_type |
4ce794b7 AM |
1573 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1574 | void *data, asection *input_section, | |
1575 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1576 | { |
1577 | /* If this is a relocatable link (output_bfd test tells us), just | |
1578 | call the generic function. Any adjustment will be done at final | |
1579 | link time. */ | |
1580 | if (output_bfd != NULL) | |
cedb70c5 | 1581 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1582 | input_section, output_bfd, error_message); |
1583 | ||
1584 | /* Subtract the symbol section base address. */ | |
1585 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1586 | ||
1587 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1588 | reloc_entry->addend += 0x8000; | |
1589 | return bfd_reloc_continue; | |
1590 | } | |
1591 | ||
1592 | static bfd_reloc_status_type | |
4ce794b7 AM |
1593 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1594 | void *data, asection *input_section, | |
1595 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1596 | { |
1597 | bfd_vma TOCstart; | |
1598 | ||
1599 | /* If this is a relocatable link (output_bfd test tells us), just | |
1600 | call the generic function. Any adjustment will be done at final | |
1601 | link time. */ | |
1602 | if (output_bfd != NULL) | |
cedb70c5 | 1603 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1604 | input_section, output_bfd, error_message); |
1605 | ||
1606 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1607 | if (TOCstart == 0) | |
1c865ab2 | 1608 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1609 | |
1610 | /* Subtract the TOC base address. */ | |
1611 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1612 | return bfd_reloc_continue; | |
1613 | } | |
1614 | ||
1615 | static bfd_reloc_status_type | |
4ce794b7 AM |
1616 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1617 | void *data, asection *input_section, | |
1618 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1619 | { |
1620 | bfd_vma TOCstart; | |
1621 | ||
1622 | /* If this is a relocatable link (output_bfd test tells us), just | |
1623 | call the generic function. Any adjustment will be done at final | |
1624 | link time. */ | |
1625 | if (output_bfd != NULL) | |
cedb70c5 | 1626 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1627 | input_section, output_bfd, error_message); |
1628 | ||
1629 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1630 | if (TOCstart == 0) | |
1c865ab2 | 1631 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1632 | |
1633 | /* Subtract the TOC base address. */ | |
1634 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1635 | ||
1636 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1637 | reloc_entry->addend += 0x8000; | |
1638 | return bfd_reloc_continue; | |
1639 | } | |
1640 | ||
1641 | static bfd_reloc_status_type | |
4ce794b7 AM |
1642 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1643 | void *data, asection *input_section, | |
1644 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1645 | { |
1646 | bfd_vma TOCstart; | |
1647 | bfd_size_type octets; | |
1648 | ||
1649 | /* If this is a relocatable link (output_bfd test tells us), just | |
1650 | call the generic function. Any adjustment will be done at final | |
1651 | link time. */ | |
1652 | if (output_bfd != NULL) | |
cedb70c5 | 1653 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1654 | input_section, output_bfd, error_message); |
1655 | ||
1656 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1657 | if (TOCstart == 0) | |
1c865ab2 | 1658 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 | 1659 | |
bb294208 | 1660 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1661 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); |
1662 | return bfd_reloc_ok; | |
1663 | } | |
1664 | ||
5663e321 AM |
1665 | static bfd_reloc_status_type |
1666 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1667 | void *data, asection *input_section, | |
1668 | bfd *output_bfd, char **error_message) | |
1669 | { | |
1670 | uint64_t insn; | |
1671 | bfd_vma targ; | |
1672 | ||
1673 | if (output_bfd != NULL) | |
1674 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1675 | input_section, output_bfd, error_message); | |
1676 | ||
1677 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1678 | insn <<= 32; | |
1679 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1680 | ||
1681 | targ = (symbol->section->output_section->vma | |
1682 | + symbol->section->output_offset | |
1683 | + reloc_entry->addend); | |
1684 | if (!bfd_is_com_section (symbol->section)) | |
1685 | targ += symbol->value; | |
1686 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1687 | targ += 1ULL << 33; | |
1688 | if (reloc_entry->howto->pc_relative) | |
1689 | { | |
1690 | bfd_vma from = (reloc_entry->address | |
1691 | + input_section->output_offset | |
1692 | + input_section->output_section->vma); | |
1693 | targ -=from; | |
1694 | } | |
1695 | targ >>= reloc_entry->howto->rightshift; | |
1696 | insn &= ~reloc_entry->howto->dst_mask; | |
1697 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1698 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1699 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1700 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1701 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1702 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1703 | return bfd_reloc_overflow; | |
1704 | return bfd_reloc_ok; | |
1705 | } | |
1706 | ||
805fc799 | 1707 | static bfd_reloc_status_type |
4ce794b7 AM |
1708 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1709 | void *data, asection *input_section, | |
1710 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1711 | { |
1712 | /* If this is a relocatable link (output_bfd test tells us), just | |
1713 | call the generic function. Any adjustment will be done at final | |
1714 | link time. */ | |
1715 | if (output_bfd != NULL) | |
cedb70c5 | 1716 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1717 | input_section, output_bfd, error_message); |
1718 | ||
1719 | if (error_message != NULL) | |
1720 | { | |
7fbd5f4e AM |
1721 | static char *message; |
1722 | free (message); | |
1723 | if (asprintf (&message, _("generic linker can't handle %s"), | |
1724 | reloc_entry->howto->name) < 0) | |
1725 | message = NULL; | |
1726 | *error_message = message; | |
805fc799 AM |
1727 | } |
1728 | return bfd_reloc_dangerous; | |
1729 | } | |
1730 | ||
927be08e AM |
1731 | /* Track GOT entries needed for a given symbol. We might need more |
1732 | than one got entry per symbol. */ | |
1733 | struct got_entry | |
1734 | { | |
1735 | struct got_entry *next; | |
1736 | ||
1737 | /* The symbol addend that we'll be placing in the GOT. */ | |
1738 | bfd_vma addend; | |
1739 | ||
1740 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1741 | symbol referenced from different input files. This is to support | |
1742 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1743 | from one input file to another. After partitioning into TOC groups | |
1744 | we merge entries within the group. | |
1745 | ||
1746 | Point to the BFD owning this GOT entry. */ | |
1747 | bfd *owner; | |
1748 | ||
1749 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1750 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1751 | unsigned char tls_type; |
927be08e AM |
1752 | |
1753 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1754 | unsigned char is_indirect; |
927be08e AM |
1755 | |
1756 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1757 | union | |
2cdcc330 AM |
1758 | { |
1759 | bfd_signed_vma refcount; | |
1760 | bfd_vma offset; | |
1761 | struct got_entry *ent; | |
1762 | } got; | |
927be08e AM |
1763 | }; |
1764 | ||
1765 | /* The same for PLT. */ | |
1766 | struct plt_entry | |
1767 | { | |
1768 | struct plt_entry *next; | |
1769 | ||
1770 | bfd_vma addend; | |
1771 | ||
1772 | union | |
2cdcc330 AM |
1773 | { |
1774 | bfd_signed_vma refcount; | |
1775 | bfd_vma offset; | |
1776 | } plt; | |
927be08e AM |
1777 | }; |
1778 | ||
e717da7e AM |
1779 | struct ppc64_elf_obj_tdata |
1780 | { | |
1781 | struct elf_obj_tdata elf; | |
1782 | ||
1783 | /* Shortcuts to dynamic linker sections. */ | |
1784 | asection *got; | |
1785 | asection *relgot; | |
1786 | ||
b3fac117 AM |
1787 | /* Used during garbage collection. We attach global symbols defined |
1788 | on removed .opd entries to this section so that the sym is removed. */ | |
1789 | asection *deleted_section; | |
81688140 | 1790 | |
927be08e | 1791 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1792 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1793 | struct got_entry tlsld_got; |
8860955f | 1794 | |
2cdcc330 AM |
1795 | union |
1796 | { | |
729eabd5 AM |
1797 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1798 | Elf_Internal_Rela *relocs; | |
1799 | ||
1800 | /* Section contents. */ | |
1801 | bfd_byte *contents; | |
1802 | } opd; | |
d77c8a4b AM |
1803 | |
1804 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1805 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1806 | unsigned int has_small_toc_reloc : 1; |
1807 | ||
560c8763 AM |
1808 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1809 | instruction not one we handle. */ | |
1810 | unsigned int unexpected_toc_insn : 1; | |
066f4018 | 1811 | |
903b777d AM |
1812 | /* Set if PLT/GOT/TOC relocs that can be optimised are present in |
1813 | this file. */ | |
1814 | unsigned int has_optrel : 1; | |
e717da7e AM |
1815 | }; |
1816 | ||
1817 | #define ppc64_elf_tdata(bfd) \ | |
1818 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1819 | ||
1820 | #define ppc64_tlsld_got(bfd) \ | |
1821 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1822 | ||
0c8d6e5c AM |
1823 | #define is_ppc64_elf(bfd) \ |
1824 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1825 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1826 | |
e717da7e AM |
1827 | /* Override the generic function because we store some extras. */ |
1828 | ||
1829 | static bfd_boolean | |
1830 | ppc64_elf_mkobject (bfd *abfd) | |
1831 | { | |
0ffa91dd | 1832 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1833 | PPC64_ELF_DATA); |
e717da7e AM |
1834 | } |
1835 | ||
feee612b | 1836 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1837 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1838 | |
b34976b6 | 1839 | static bfd_boolean |
4ce794b7 | 1840 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1841 | { |
14b57c7c AM |
1842 | if (!abfd->arch_info->the_default) |
1843 | return TRUE; | |
1844 | ||
1845 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1846 | { |
1847 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1848 | ||
1849 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1850 | { | |
1851 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1852 | abfd->arch_info = abfd->arch_info->next; | |
1853 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1854 | } | |
1855 | } | |
14b57c7c | 1856 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1857 | } |
1858 | ||
d37c89e5 AM |
1859 | /* Support for core dump NOTE sections. */ |
1860 | ||
1861 | static bfd_boolean | |
1862 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1863 | { | |
eea6121a | 1864 | size_t offset, size; |
d37c89e5 AM |
1865 | |
1866 | if (note->descsz != 504) | |
1867 | return FALSE; | |
1868 | ||
1869 | /* pr_cursig */ | |
228e534f | 1870 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1871 | |
1872 | /* pr_pid */ | |
228e534f | 1873 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1874 | |
1875 | /* pr_reg */ | |
1876 | offset = 112; | |
eea6121a | 1877 | size = 384; |
d37c89e5 AM |
1878 | |
1879 | /* Make a ".reg/999" section. */ | |
1880 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1881 | size, note->descpos + offset); |
d37c89e5 AM |
1882 | } |
1883 | ||
1884 | static bfd_boolean | |
1885 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1886 | { | |
1887 | if (note->descsz != 136) | |
1888 | return FALSE; | |
1889 | ||
228e534f | 1890 | elf_tdata (abfd)->core->pid |
bc989cdc | 1891 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1892 | elf_tdata (abfd)->core->program |
d37c89e5 | 1893 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1894 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1895 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1896 | ||
1897 | return TRUE; | |
1898 | } | |
1899 | ||
183e98be AM |
1900 | static char * |
1901 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1902 | ...) | |
1903 | { | |
1904 | switch (note_type) | |
1905 | { | |
1906 | default: | |
1907 | return NULL; | |
1908 | ||
1909 | case NT_PRPSINFO: | |
1910 | { | |
9ef6d1e3 | 1911 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1912 | va_list ap; |
1913 | ||
1914 | va_start (ap, note_type); | |
75cd47ed | 1915 | memset (data, 0, sizeof (data)); |
183e98be | 1916 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1917 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1918 | DIAGNOSTIC_PUSH; |
be3e27bb | 1919 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1920 | -Wstringop-truncation: |
1921 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1922 | */ | |
95da9854 L |
1923 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1924 | #endif | |
183e98be | 1925 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1926 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1927 | DIAGNOSTIC_POP; |
fe75810f | 1928 | #endif |
183e98be AM |
1929 | va_end (ap); |
1930 | return elfcore_write_note (abfd, buf, bufsiz, | |
1931 | "CORE", note_type, data, sizeof (data)); | |
1932 | } | |
1933 | ||
1934 | case NT_PRSTATUS: | |
1935 | { | |
1936 | char data[504]; | |
1937 | va_list ap; | |
1938 | long pid; | |
1939 | int cursig; | |
1940 | const void *greg; | |
1941 | ||
1942 | va_start (ap, note_type); | |
1943 | memset (data, 0, 112); | |
1944 | pid = va_arg (ap, long); | |
1945 | bfd_put_32 (abfd, pid, data + 32); | |
1946 | cursig = va_arg (ap, int); | |
1947 | bfd_put_16 (abfd, cursig, data + 12); | |
1948 | greg = va_arg (ap, const void *); | |
1949 | memcpy (data + 112, greg, 384); | |
1950 | memset (data + 496, 0, 8); | |
1951 | va_end (ap); | |
1952 | return elfcore_write_note (abfd, buf, bufsiz, | |
1953 | "CORE", note_type, data, sizeof (data)); | |
1954 | } | |
1955 | } | |
1956 | } | |
1957 | ||
5d35169e AM |
1958 | /* Add extra PPC sections. */ |
1959 | ||
2cdcc330 | 1960 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1961 | { |
07d6d2b8 AM |
1962 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1963 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1964 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1965 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1966 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1967 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1968 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1969 | }; |
1970 | ||
7c8fe5c4 AM |
1971 | enum _ppc64_sec_type { |
1972 | sec_normal = 0, | |
1973 | sec_opd = 1, | |
1974 | sec_toc = 2 | |
1975 | }; | |
1976 | ||
f0abc2a1 AM |
1977 | struct _ppc64_elf_section_data |
1978 | { | |
1979 | struct bfd_elf_section_data elf; | |
411e1bfb | 1980 | |
f0abc2a1 AM |
1981 | union |
1982 | { | |
51aecdc5 AM |
1983 | /* An array with one entry for each opd function descriptor, |
1984 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1985 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1986 | struct _opd_sec_data |
1987 | { | |
1988 | /* Points to the function code section for local opd entries. */ | |
1989 | asection **func_sec; | |
1990 | ||
1991 | /* After editing .opd, adjust references to opd local syms. */ | |
1992 | long *adjust; | |
1993 | } opd; | |
7c8fe5c4 | 1994 | |
3a71aa26 AM |
1995 | /* An array for toc sections, indexed by offset/8. */ |
1996 | struct _toc_sec_data | |
1997 | { | |
1998 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1999 | unsigned *symndx; | |
2000 | ||
2001 | /* And the relocation addend. */ | |
2002 | bfd_vma *add; | |
2003 | } toc; | |
7c8fe5c4 AM |
2004 | } u; |
2005 | ||
2006 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2007 | |
7c8fe5c4 AM |
2008 | /* Flag set when small branches are detected. Used to |
2009 | select suitable defaults for the stub group size. */ | |
2010 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
2011 | |
2012 | /* Flag set when PLTCALL relocs are detected. */ | |
2013 | unsigned int has_pltcall:1; | |
066f4018 | 2014 | |
903b777d AM |
2015 | /* Flag set when section has PLT/GOT/TOC relocations that can be |
2016 | optimised. */ | |
2017 | unsigned int has_optrel:1; | |
f0abc2a1 AM |
2018 | }; |
2019 | ||
2020 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2021 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2022 | |
2023 | static bfd_boolean | |
4ce794b7 | 2024 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2025 | { |
f592407e AM |
2026 | if (!sec->used_by_bfd) |
2027 | { | |
2028 | struct _ppc64_elf_section_data *sdata; | |
986f0783 | 2029 | size_t amt = sizeof (*sdata); |
f0abc2a1 | 2030 | |
f592407e AM |
2031 | sdata = bfd_zalloc (abfd, amt); |
2032 | if (sdata == NULL) | |
2033 | return FALSE; | |
2034 | sec->used_by_bfd = sdata; | |
2035 | } | |
f0abc2a1 AM |
2036 | |
2037 | return _bfd_elf_new_section_hook (abfd, sec); | |
2038 | } | |
4025353c | 2039 | |
bf577467 AM |
2040 | static bfd_boolean |
2041 | ppc64_elf_section_flags (const Elf_Internal_Shdr *hdr) | |
2042 | { | |
2043 | const char *name = hdr->bfd_section->name; | |
2044 | ||
2045 | if (strncmp (name, ".sbss", 5) == 0 | |
2046 | || strncmp (name, ".sdata", 6) == 0) | |
2047 | hdr->bfd_section->flags |= SEC_SMALL_DATA; | |
2048 | ||
2049 | return TRUE; | |
2050 | } | |
2051 | ||
74f0fb50 | 2052 | static struct _opd_sec_data * |
4025353c AM |
2053 | get_opd_info (asection * sec) |
2054 | { | |
2055 | if (sec != NULL | |
2056 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2057 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2058 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2059 | return NULL; |
2060 | } | |
90e3cdf2 JJ |
2061 | \f |
2062 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 2063 | static bfd_boolean synthetic_relocatable; |
8cb1c2c8 | 2064 | static const asection *synthetic_opd; |
90e3cdf2 | 2065 | |
699733f6 | 2066 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2067 | |
2068 | static int | |
2069 | compare_symbols (const void *ap, const void *bp) | |
2070 | { | |
2cdcc330 AM |
2071 | const asymbol *a = *(const asymbol **) ap; |
2072 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 2073 | |
699733f6 AM |
2074 | /* Section symbols first. */ |
2075 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2076 | return -1; |
699733f6 | 2077 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2078 | return 1; |
2079 | ||
699733f6 | 2080 | /* then .opd symbols. */ |
cd285db5 AM |
2081 | if (synthetic_opd != NULL) |
2082 | { | |
2083 | if (strcmp (a->section->name, ".opd") == 0 | |
2084 | && strcmp (b->section->name, ".opd") != 0) | |
2085 | return -1; | |
2086 | if (strcmp (a->section->name, ".opd") != 0 | |
2087 | && strcmp (b->section->name, ".opd") == 0) | |
2088 | return 1; | |
2089 | } | |
90e3cdf2 | 2090 | |
699733f6 | 2091 | /* then other code symbols. */ |
2cdcc330 AM |
2092 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2093 | == (SEC_CODE | SEC_ALLOC)) | |
2094 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2095 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2096 | return -1; |
2097 | ||
2cdcc330 AM |
2098 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2099 | != (SEC_CODE | SEC_ALLOC)) | |
2100 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2101 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2102 | return 1; |
2103 | ||
2104 | if (synthetic_relocatable) | |
2105 | { | |
2106 | if (a->section->id < b->section->id) | |
2107 | return -1; | |
2108 | ||
2109 | if (a->section->id > b->section->id) | |
2110 | return 1; | |
2111 | } | |
2112 | ||
2113 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2114 | return -1; | |
2115 | ||
2116 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2117 | return 1; | |
2118 | ||
4d35a0aa AM |
2119 | /* For syms with the same value, prefer strong dynamic global function |
2120 | syms over other syms. */ | |
2121 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2122 | return -1; | |
2123 | ||
2124 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2125 | return 1; | |
2126 | ||
2127 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2128 | return -1; | |
2129 | ||
2130 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2131 | return 1; | |
2132 | ||
2133 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2134 | return -1; | |
2135 | ||
2136 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2137 | return 1; | |
2138 | ||
2139 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2140 | return -1; | |
2141 | ||
2142 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2143 | return 1; | |
2144 | ||
dcea6a95 AM |
2145 | /* Finally, sort on where the symbol is in memory. The symbols will |
2146 | be in at most two malloc'd blocks, one for static syms, one for | |
2147 | dynamic syms, and we distinguish the two blocks above by testing | |
2148 | BSF_DYNAMIC. Since we are sorting the symbol pointers which were | |
2149 | originally in the same order as the symbols (and we're not | |
2150 | sorting the symbols themselves), this ensures a stable sort. */ | |
2151 | if (a < b) | |
2152 | return -1; | |
2153 | if (a > b) | |
2154 | return 1; | |
2155 | return 0; | |
90e3cdf2 JJ |
2156 | } |
2157 | ||
699733f6 | 2158 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2159 | |
699733f6 | 2160 | static asymbol * |
9ad9b810 AM |
2161 | sym_exists_at (asymbol **syms, size_t lo, size_t hi, unsigned int id, |
2162 | bfd_vma value) | |
90e3cdf2 | 2163 | { |
9ad9b810 | 2164 | size_t mid; |
90e3cdf2 | 2165 | |
7292b3ac | 2166 | if (id == (unsigned) -1) |
699733f6 AM |
2167 | { |
2168 | while (lo < hi) | |
2169 | { | |
2170 | mid = (lo + hi) >> 1; | |
2171 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2172 | lo = mid + 1; | |
2173 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2174 | hi = mid; | |
2175 | else | |
2176 | return syms[mid]; | |
2177 | } | |
2178 | } | |
2179 | else | |
2180 | { | |
2181 | while (lo < hi) | |
2182 | { | |
2183 | mid = (lo + hi) >> 1; | |
2184 | if (syms[mid]->section->id < id) | |
2185 | lo = mid + 1; | |
2186 | else if (syms[mid]->section->id > id) | |
2187 | hi = mid; | |
2188 | else if (syms[mid]->value < value) | |
2189 | lo = mid + 1; | |
2190 | else if (syms[mid]->value > value) | |
2191 | hi = mid; | |
2192 | else | |
2193 | return syms[mid]; | |
2194 | } | |
2195 | } | |
2196 | return NULL; | |
90e3cdf2 JJ |
2197 | } |
2198 | ||
468392fb AM |
2199 | static bfd_boolean |
2200 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2201 | { | |
2202 | bfd_vma vma = *(bfd_vma *) ptr; | |
2203 | return ((section->flags & SEC_ALLOC) != 0 | |
2204 | && section->vma <= vma | |
2205 | && vma < section->vma + section->size); | |
2206 | } | |
2207 | ||
699733f6 | 2208 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2209 | entry syms. Also generate @plt symbols for the glink branch table. |
2210 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2211 | |
2212 | static long | |
a7535cf3 AM |
2213 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2214 | long static_count, asymbol **static_syms, | |
2215 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2216 | asymbol **ret) |
90e3cdf2 JJ |
2217 | { |
2218 | asymbol *s; | |
0ccf57bd | 2219 | size_t i, j, count; |
90e3cdf2 | 2220 | char *names; |
0ccf57bd | 2221 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2222 | asection *opd = NULL; |
90e3cdf2 | 2223 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2224 | asymbol **syms; |
ee67d69a | 2225 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2226 | |
2227 | *ret = NULL; | |
2228 | ||
ee67d69a AM |
2229 | if (abi < 2) |
2230 | { | |
2231 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2232 | if (opd == NULL && abi == 1) | |
2233 | return 0; | |
2234 | } | |
90e3cdf2 | 2235 | |
a5259595 AM |
2236 | syms = NULL; |
2237 | codesecsym = 0; | |
2238 | codesecsymend = 0; | |
2239 | secsymend = 0; | |
2240 | opdsymend = 0; | |
2241 | symcount = 0; | |
2242 | if (opd != NULL) | |
c9727e01 | 2243 | { |
a5259595 AM |
2244 | symcount = static_count; |
2245 | if (!relocatable) | |
2246 | symcount += dyn_count; | |
2247 | if (symcount == 0) | |
2248 | return 0; | |
c9727e01 | 2249 | |
a5259595 AM |
2250 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2251 | if (syms == NULL) | |
2252 | return -1; | |
90e3cdf2 | 2253 | |
a5259595 AM |
2254 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2255 | { | |
2256 | /* Use both symbol tables. */ | |
2257 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2258 | memcpy (syms + static_count, dyn_syms, | |
2259 | (dyn_count + 1) * sizeof (*syms)); | |
2260 | } | |
2261 | else if (!relocatable && static_count == 0) | |
2262 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2263 | else | |
2264 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2265 | |
0ccf57bd AM |
2266 | /* Trim uninteresting symbols. Interesting symbols are section, |
2267 | function, and notype symbols. */ | |
2268 | for (i = 0, j = 0; i < symcount; ++i) | |
2269 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2270 | | BSF_RELC | BSF_SRELC)) == 0) | |
2271 | syms[j++] = syms[i]; | |
2272 | symcount = j; | |
2273 | ||
a5259595 AM |
2274 | synthetic_relocatable = relocatable; |
2275 | synthetic_opd = opd; | |
2276 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2277 | |
a5259595 AM |
2278 | if (!relocatable && symcount > 1) |
2279 | { | |
bfa5bd2a PA |
2280 | /* Trim duplicate syms, since we may have merged the normal |
2281 | and dynamic symbols. Actually, we only care about syms | |
2282 | that have different values, so trim any with the same | |
2283 | value. Don't consider ifunc and ifunc resolver symbols | |
2284 | duplicates however, because GDB wants to know whether a | |
2285 | text symbol is an ifunc resolver. */ | |
a5259595 | 2286 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2287 | { |
2288 | const asymbol *s0 = syms[i - 1]; | |
2289 | const asymbol *s1 = syms[i]; | |
2290 | ||
2291 | if ((s0->value + s0->section->vma | |
2292 | != s1->value + s1->section->vma) | |
2293 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2294 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2295 | syms[j++] = syms[i]; | |
2296 | } | |
a5259595 AM |
2297 | symcount = j; |
2298 | } | |
699733f6 | 2299 | |
a5259595 AM |
2300 | i = 0; |
2301 | /* Note that here and in compare_symbols we can't compare opd and | |
2302 | sym->section directly. With separate debug info files, the | |
2303 | symbols will be extracted from the debug file while abfd passed | |
2304 | to this function is the real binary. */ | |
8bd10d6b AM |
2305 | if ((syms[i]->flags & BSF_SECTION_SYM) != 0 |
2306 | && strcmp (syms[i]->section->name, ".opd") == 0) | |
a5259595 AM |
2307 | ++i; |
2308 | codesecsym = i; | |
2309 | ||
2310 | for (; i < symcount; ++i) | |
2311 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2312 | | SEC_THREAD_LOCAL)) | |
2313 | != (SEC_CODE | SEC_ALLOC)) | |
2314 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2315 | break; | |
2316 | codesecsymend = i; | |
2317 | ||
2318 | for (; i < symcount; ++i) | |
2319 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2320 | break; | |
2321 | secsymend = i; | |
2322 | ||
2323 | for (; i < symcount; ++i) | |
2324 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2325 | break; | |
2326 | opdsymend = i; | |
2327 | ||
2328 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2329 | if (((syms[i]->section->flags |
2330 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2331 | != (SEC_CODE | SEC_ALLOC)) |
2332 | break; | |
2333 | symcount = i; | |
2334 | } | |
c9727e01 | 2335 | count = 0; |
90e3cdf2 | 2336 | |
699733f6 | 2337 | if (relocatable) |
90e3cdf2 | 2338 | { |
699733f6 AM |
2339 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2340 | arelent *r; | |
2341 | size_t size; | |
0ccf57bd | 2342 | size_t relcount; |
90e3cdf2 | 2343 | |
468392fb AM |
2344 | if (opdsymend == secsymend) |
2345 | goto done; | |
2346 | ||
699733f6 | 2347 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2348 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2349 | if (relcount == 0) |
c9727e01 | 2350 | goto done; |
90e3cdf2 | 2351 | |
7356fed5 AM |
2352 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2353 | { | |
2354 | count = -1; | |
2355 | goto done; | |
2356 | } | |
2357 | ||
699733f6 | 2358 | size = 0; |
595da8c5 | 2359 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2360 | { |
2361 | asymbol *sym; | |
90e3cdf2 | 2362 | |
595da8c5 | 2363 | while (r < opd->relocation + relcount |
699733f6 AM |
2364 | && r->address < syms[i]->value + opd->vma) |
2365 | ++r; | |
90e3cdf2 | 2366 | |
595da8c5 | 2367 | if (r == opd->relocation + relcount) |
699733f6 | 2368 | break; |
90e3cdf2 | 2369 | |
699733f6 AM |
2370 | if (r->address != syms[i]->value + opd->vma) |
2371 | continue; | |
90e3cdf2 | 2372 | |
699733f6 AM |
2373 | if (r->howto->type != R_PPC64_ADDR64) |
2374 | continue; | |
90e3cdf2 | 2375 | |
699733f6 AM |
2376 | sym = *r->sym_ptr_ptr; |
2377 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2378 | sym->section->id, sym->value + r->addend)) | |
2379 | { | |
2380 | ++count; | |
2381 | size += sizeof (asymbol); | |
2382 | size += strlen (syms[i]->name) + 2; | |
2383 | } | |
2384 | } | |
90e3cdf2 | 2385 | |
c4b0b099 AM |
2386 | if (size == 0) |
2387 | goto done; | |
699733f6 AM |
2388 | s = *ret = bfd_malloc (size); |
2389 | if (s == NULL) | |
2390 | { | |
7356fed5 | 2391 | count = -1; |
c9727e01 | 2392 | goto done; |
699733f6 | 2393 | } |
90e3cdf2 | 2394 | |
699733f6 | 2395 | names = (char *) (s + count); |
90e3cdf2 | 2396 | |
595da8c5 | 2397 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2398 | { |
699733f6 | 2399 | asymbol *sym; |
90e3cdf2 | 2400 | |
595da8c5 | 2401 | while (r < opd->relocation + relcount |
699733f6 AM |
2402 | && r->address < syms[i]->value + opd->vma) |
2403 | ++r; | |
90e3cdf2 | 2404 | |
595da8c5 | 2405 | if (r == opd->relocation + relcount) |
699733f6 AM |
2406 | break; |
2407 | ||
2408 | if (r->address != syms[i]->value + opd->vma) | |
2409 | continue; | |
2410 | ||
2411 | if (r->howto->type != R_PPC64_ADDR64) | |
2412 | continue; | |
90e3cdf2 | 2413 | |
699733f6 AM |
2414 | sym = *r->sym_ptr_ptr; |
2415 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2416 | sym->section->id, sym->value + r->addend)) | |
2417 | { | |
2418 | size_t len; | |
2419 | ||
2420 | *s = *syms[i]; | |
6ba2a415 | 2421 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2422 | s->section = sym->section; |
2423 | s->value = sym->value + r->addend; | |
2424 | s->name = names; | |
2425 | *names++ = '.'; | |
2426 | len = strlen (syms[i]->name); | |
2427 | memcpy (names, syms[i]->name, len + 1); | |
2428 | names += len + 1; | |
6f610d07 UW |
2429 | /* Have udata.p point back to the original symbol this |
2430 | synthetic symbol was derived from. */ | |
2431 | s->udata.p = syms[i]; | |
699733f6 AM |
2432 | s++; |
2433 | } | |
2434 | } | |
2435 | } | |
2436 | else | |
90e3cdf2 | 2437 | { |
468392fb | 2438 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2439 | bfd_byte *contents = NULL; |
699733f6 | 2440 | size_t size; |
0ccf57bd | 2441 | size_t plt_count = 0; |
468392fb AM |
2442 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2443 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2444 | arelent *p; | |
90e3cdf2 | 2445 | |
ee67d69a | 2446 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2447 | { |
c4b0b099 AM |
2448 | free_contents_and_exit_err: |
2449 | count = -1; | |
ee67d69a | 2450 | free_contents_and_exit: |
c9594989 | 2451 | free (contents); |
c9727e01 | 2452 | goto done; |
699733f6 | 2453 | } |
90e3cdf2 | 2454 | |
699733f6 AM |
2455 | size = 0; |
2456 | for (i = secsymend; i < opdsymend; ++i) | |
2457 | { | |
2458 | bfd_vma ent; | |
90e3cdf2 | 2459 | |
5ef11c02 AM |
2460 | /* Ignore bogus symbols. */ |
2461 | if (syms[i]->value > opd->size - 8) | |
2462 | continue; | |
2463 | ||
699733f6 AM |
2464 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2465 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2466 | { | |
2467 | ++count; | |
2468 | size += sizeof (asymbol); | |
2469 | size += strlen (syms[i]->name) + 2; | |
2470 | } | |
2471 | } | |
90e3cdf2 | 2472 | |
468392fb | 2473 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2474 | if (dyn_count != 0 |
2475 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2476 | { |
2477 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2478 | size_t extdynsize; | |
2479 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2480 | ||
2481 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2482 | goto free_contents_and_exit_err; |
468392fb AM |
2483 | |
2484 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2485 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2486 | ||
2487 | extdyn = dynbuf; | |
2488 | extdynend = extdyn + dynamic->size; | |
2489 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2490 | { | |
2491 | Elf_Internal_Dyn dyn; | |
2492 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2493 | ||
2494 | if (dyn.d_tag == DT_NULL) | |
2495 | break; | |
2496 | ||
2497 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2498 | { | |
9e390558 AM |
2499 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2500 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2501 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2502 | /* The .glink section usually does not survive the final |
2503 | link; search for the section (usually .text) where the | |
2504 | glink stubs now reside. */ | |
2505 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2506 | &glink_vma); | |
2507 | break; | |
2508 | } | |
2509 | } | |
2510 | ||
2511 | free (dynbuf); | |
2512 | } | |
2513 | ||
2514 | if (glink != NULL) | |
2515 | { | |
2516 | /* Determine __glink trampoline by reading the relative branch | |
2517 | from the first glink stub. */ | |
2518 | bfd_byte buf[4]; | |
b9e5796b AM |
2519 | unsigned int off = 0; |
2520 | ||
2521 | while (bfd_get_section_contents (abfd, glink, buf, | |
2522 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2523 | { |
2524 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2525 | insn ^= B_DOT; | |
2526 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2527 | { |
2cdcc330 AM |
2528 | resolv_vma |
2529 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2530 | break; |
2531 | } | |
2532 | off += 4; | |
2533 | if (off > 4) | |
2534 | break; | |
468392fb AM |
2535 | } |
2536 | ||
2537 | if (resolv_vma) | |
2538 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2539 | |
066ee829 AM |
2540 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2541 | if (relplt != NULL) | |
2542 | { | |
2543 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2544 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2545 | goto free_contents_and_exit_err; |
68ffbac6 | 2546 | |
066ee829 AM |
2547 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2548 | size += plt_count * sizeof (asymbol); | |
468392fb | 2549 | |
066ee829 AM |
2550 | p = relplt->relocation; |
2551 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2552 | { |
2553 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2554 | if (p->addend != 0) | |
2555 | size += sizeof ("+0x") - 1 + 16; | |
2556 | } | |
066ee829 | 2557 | } |
468392fb AM |
2558 | } |
2559 | ||
c4b0b099 AM |
2560 | if (size == 0) |
2561 | goto free_contents_and_exit; | |
699733f6 AM |
2562 | s = *ret = bfd_malloc (size); |
2563 | if (s == NULL) | |
c4b0b099 | 2564 | goto free_contents_and_exit_err; |
90e3cdf2 | 2565 | |
468392fb | 2566 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2567 | |
699733f6 | 2568 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2569 | { |
699733f6 | 2570 | bfd_vma ent; |
90e3cdf2 | 2571 | |
5ef11c02 AM |
2572 | if (syms[i]->value > opd->size - 8) |
2573 | continue; | |
2574 | ||
699733f6 AM |
2575 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2576 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2577 | { |
0ccf57bd | 2578 | size_t lo, hi; |
699733f6 | 2579 | size_t len; |
c9727e01 | 2580 | asection *sec = abfd->sections; |
90e3cdf2 | 2581 | |
699733f6 AM |
2582 | *s = *syms[i]; |
2583 | lo = codesecsym; | |
2584 | hi = codesecsymend; | |
2585 | while (lo < hi) | |
2586 | { | |
0ccf57bd | 2587 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2588 | if (syms[mid]->section->vma < ent) |
2589 | lo = mid + 1; | |
2590 | else if (syms[mid]->section->vma > ent) | |
2591 | hi = mid; | |
2592 | else | |
c9727e01 AM |
2593 | { |
2594 | sec = syms[mid]->section; | |
2595 | break; | |
2596 | } | |
699733f6 AM |
2597 | } |
2598 | ||
c9727e01 | 2599 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2600 | sec = syms[lo - 1]->section; |
699733f6 AM |
2601 | |
2602 | for (; sec != NULL; sec = sec->next) | |
2603 | { | |
2604 | if (sec->vma > ent) | |
2605 | break; | |
63524580 JK |
2606 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2607 | info file. */ | |
2608 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2609 | break; |
2610 | if ((sec->flags & SEC_CODE) != 0) | |
2611 | s->section = sec; | |
2612 | } | |
6ba2a415 | 2613 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2614 | s->value = ent - s->section->vma; |
2615 | s->name = names; | |
2616 | *names++ = '.'; | |
2617 | len = strlen (syms[i]->name); | |
2618 | memcpy (names, syms[i]->name, len + 1); | |
2619 | names += len + 1; | |
6f610d07 UW |
2620 | /* Have udata.p point back to the original symbol this |
2621 | synthetic symbol was derived from. */ | |
2622 | s->udata.p = syms[i]; | |
699733f6 | 2623 | s++; |
90e3cdf2 | 2624 | } |
90e3cdf2 | 2625 | } |
699733f6 | 2626 | free (contents); |
468392fb AM |
2627 | |
2628 | if (glink != NULL && relplt != NULL) | |
2629 | { | |
2630 | if (resolv_vma) | |
2631 | { | |
2632 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2633 | memset (s, 0, sizeof *s); |
468392fb | 2634 | s->the_bfd = abfd; |
6ba2a415 | 2635 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2636 | s->section = glink; |
2637 | s->value = resolv_vma - glink->vma; | |
2638 | s->name = names; | |
2cdcc330 AM |
2639 | memcpy (names, "__glink_PLTresolve", |
2640 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2641 | names += sizeof ("__glink_PLTresolve"); |
2642 | s++; | |
2643 | count++; | |
2644 | } | |
2645 | ||
2646 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2647 | stub rather than on the glink branch table entry. The | |
2648 | objdump disassembler would then use a sensible symbol | |
2649 | name on plt calls. The difficulty in doing so is | |
2650 | a) finding the stubs, and, | |
2651 | b) matching stubs against plt entries, and, | |
2652 | c) there can be multiple stubs for a given plt entry. | |
2653 | ||
2654 | Solving (a) could be done by code scanning, but older | |
2655 | ppc64 binaries used different stubs to current code. | |
2656 | (b) is the tricky one since you need to known the toc | |
2657 | pointer for at least one function that uses a pic stub to | |
2658 | be able to calculate the plt address referenced. | |
2659 | (c) means gdb would need to set multiple breakpoints (or | |
2660 | find the glink branch itself) when setting breakpoints | |
2661 | for pending shared library loads. */ | |
2662 | p = relplt->relocation; | |
2663 | for (i = 0; i < plt_count; i++, p++) | |
2664 | { | |
2665 | size_t len; | |
2666 | ||
2667 | *s = **p->sym_ptr_ptr; | |
2668 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2669 | we are defining a symbol, ensure one of them is set. */ | |
2670 | if ((s->flags & BSF_LOCAL) == 0) | |
2671 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2672 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2673 | s->section = glink; |
2674 | s->value = glink_vma - glink->vma; | |
2675 | s->name = names; | |
2676 | s->udata.p = NULL; | |
2677 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2678 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2679 | names += len; | |
e054468f AM |
2680 | if (p->addend != 0) |
2681 | { | |
2682 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2683 | names += sizeof ("+0x") - 1; | |
2684 | bfd_sprintf_vma (abfd, names, p->addend); | |
2685 | names += strlen (names); | |
2686 | } | |
468392fb AM |
2687 | memcpy (names, "@plt", sizeof ("@plt")); |
2688 | names += sizeof ("@plt"); | |
2689 | s++; | |
b9e5796b AM |
2690 | if (abi < 2) |
2691 | { | |
2692 | glink_vma += 8; | |
2693 | if (i >= 0x8000) | |
2694 | glink_vma += 4; | |
2695 | } | |
2696 | else | |
468392fb AM |
2697 | glink_vma += 4; |
2698 | } | |
2699 | count += plt_count; | |
2700 | } | |
90e3cdf2 JJ |
2701 | } |
2702 | ||
c9727e01 | 2703 | done: |
a7535cf3 | 2704 | free (syms); |
90e3cdf2 JJ |
2705 | return count; |
2706 | } | |
5bd4f169 | 2707 | \f |
65f38f15 AM |
2708 | /* The following functions are specific to the ELF linker, while |
2709 | functions above are used generally. Those named ppc64_elf_* are | |
2710 | called by the main ELF linker code. They appear in this file more | |
2711 | or less in the order in which they are called. eg. | |
2712 | ppc64_elf_check_relocs is called early in the link process, | |
2713 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2714 | called. |
2715 | ||
2716 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2717 | functions have both a function code symbol and a function descriptor | |
2718 | symbol. A call to foo in a relocatable object file looks like: | |
2719 | ||
2720 | . .text | |
2721 | . x: | |
2722 | . bl .foo | |
2723 | . nop | |
2724 | ||
2725 | The function definition in another object file might be: | |
2726 | ||
2727 | . .section .opd | |
2728 | . foo: .quad .foo | |
2729 | . .quad .TOC.@tocbase | |
2730 | . .quad 0 | |
2731 | . | |
2732 | . .text | |
2733 | . .foo: blr | |
2734 | ||
2735 | When the linker resolves the call during a static link, the branch | |
2736 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2737 | If the function definition is in a shared library, things are a little | |
2738 | different: The call goes via a plt call stub, the opd information gets | |
2739 | copied to the plt, and the linker patches the nop. | |
2740 | ||
2741 | . x: | |
2742 | . bl .foo_stub | |
2743 | . ld 2,40(1) | |
2744 | . | |
2745 | . | |
2746 | . .foo_stub: | |
71a39c98 AM |
2747 | . std 2,40(1) # in practice, the call stub |
2748 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2749 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2750 | . ld 12,0(11) | |
2751 | . ld 2,8(11) | |
2752 | . mtctr 12 | |
2753 | . ld 11,16(11) | |
e86ce104 AM |
2754 | . bctr |
2755 | . | |
2756 | . .section .plt | |
2757 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2758 | ||
2759 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2760 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2761 | copying. | |
2762 | ||
2763 | What are the difficulties here? Well, firstly, the relocations | |
2764 | examined by the linker in check_relocs are against the function code | |
2765 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2766 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2767 | to carefully copy dynamic link information from one symbol to the other. | |
2768 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2769 | symbol as is normal for most other backends. We need foo dynamic | |
2770 | instead, at least for an application final link. However, when | |
2771 | creating a shared library containing foo, we need to have both symbols | |
2772 | dynamic so that references to .foo are satisfied during the early | |
2773 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2774 | definition from some other object, eg. a static library. |
2775 | ||
2776 | Update: As of August 2004, we support a new convention. Function | |
2777 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2778 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2779 | |
7c8bbca5 AM |
2780 | /* Of those relocs that might be copied as dynamic relocs, this |
2781 | function selects those that must be copied when linking a shared | |
2782 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2783 | |
1d483afe AM |
2784 | static int |
2785 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2786 | enum elf_ppc64_reloc_type r_type) | |
2787 | { | |
2788 | switch (r_type) | |
2789 | { | |
2790 | default: | |
7c8bbca5 AM |
2791 | /* Only relative relocs can be resolved when the object load |
2792 | address isn't fixed. DTPREL64 is excluded because the | |
2793 | dynamic linker needs to differentiate global dynamic from | |
2794 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2795 | return 1; |
2796 | ||
2797 | case R_PPC64_REL32: | |
2798 | case R_PPC64_REL64: | |
2799 | case R_PPC64_REL30: | |
1bdd8fac AM |
2800 | case R_PPC64_TOC16: |
2801 | case R_PPC64_TOC16_DS: | |
2802 | case R_PPC64_TOC16_LO: | |
2803 | case R_PPC64_TOC16_HI: | |
2804 | case R_PPC64_TOC16_HA: | |
2805 | case R_PPC64_TOC16_LO_DS: | |
1d483afe AM |
2806 | return 0; |
2807 | ||
2808 | case R_PPC64_TPREL16: | |
2809 | case R_PPC64_TPREL16_LO: | |
2810 | case R_PPC64_TPREL16_HI: | |
2811 | case R_PPC64_TPREL16_HA: | |
2812 | case R_PPC64_TPREL16_DS: | |
2813 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2814 | case R_PPC64_TPREL16_HIGH: |
2815 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2816 | case R_PPC64_TPREL16_HIGHER: |
2817 | case R_PPC64_TPREL16_HIGHERA: | |
2818 | case R_PPC64_TPREL16_HIGHEST: | |
2819 | case R_PPC64_TPREL16_HIGHESTA: | |
2820 | case R_PPC64_TPREL64: | |
c213164a | 2821 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
2822 | /* These relocations are relative but in a shared library the |
2823 | linker doesn't know the thread pointer base. */ | |
2824 | return bfd_link_dll (info); | |
1d483afe AM |
2825 | } |
2826 | } | |
65f38f15 | 2827 | |
f4656909 | 2828 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
e1c6cf61 | 2829 | copying dynamic variables from a shared lib into an app's .dynbss |
f4656909 | 2830 | section, and instead use a dynamic relocation to point into the |
e1c6cf61 AM |
2831 | shared lib. With code that gcc generates it is vital that this be |
2832 | enabled; In the PowerPC64 ELFv1 ABI the address of a function is | |
2833 | actually the address of a function descriptor which resides in the | |
2834 | .opd section. gcc uses the descriptor directly rather than going | |
2835 | via the GOT as some other ABIs do, which means that initialized | |
2836 | function pointers reference the descriptor. Thus, a function | |
2837 | pointer initialized to the address of a function in a shared | |
2838 | library will either require a .dynbss copy and a copy reloc, or a | |
2839 | dynamic reloc. Using a .dynbss copy redefines the function | |
2840 | descriptor symbol to point to the copy. This presents a problem as | |
2841 | a PLT entry for that function is also initialized from the function | |
2842 | descriptor symbol and the copy may not be initialized first. */ | |
a23b6845 | 2843 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2844 | |
721956f4 | 2845 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2846 | string. */ |
2847 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2848 | |
2849 | /* Linker stubs. | |
2850 | ppc_stub_long_branch: | |
2851 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2852 | destination, but a 24 bit branch in a stub section will reach. | |
2853 | . b dest | |
2854 | ||
2855 | ppc_stub_plt_branch: | |
2856 | Similar to the above, but a 24 bit branch in the stub section won't | |
2857 | reach its destination. | |
6df4c9c2 AM |
2858 | . addis %r12,%r2,xxx@toc@ha |
2859 | . ld %r12,xxx@toc@l(%r12) | |
71a39c98 | 2860 | . mtctr %r12 |
721956f4 AM |
2861 | . bctr |
2862 | ||
2863 | ppc_stub_plt_call: | |
2c66dc6c AM |
2864 | Used to call a function in a shared library. If it so happens that |
2865 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2866 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2867 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2868 | . addis %r11,%r2,xxx@toc@ha |
2869 | . ld %r12,xxx+0@toc@l(%r11) | |
2870 | . mtctr %r12 | |
2871 | . ld %r2,xxx+8@toc@l(%r11) | |
2872 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2873 | . bctr |
ad8e1ba5 AM |
2874 | |
2875 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2876 | code to adjust the value and save r2 to support multiple toc sections. | |
2877 | A ppc_stub_long_branch with an r2 offset looks like: | |
2878 | . std %r2,40(%r1) | |
2879 | . addis %r2,%r2,off@ha | |
2880 | . addi %r2,%r2,off@l | |
2881 | . b dest | |
2882 | ||
2883 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2884 | . std %r2,40(%r1) | |
6df4c9c2 AM |
2885 | . addis %r12,%r2,xxx@toc@ha |
2886 | . ld %r12,xxx@toc@l(%r12) | |
ad8e1ba5 AM |
2887 | . addis %r2,%r2,off@ha |
2888 | . addi %r2,%r2,off@l | |
71a39c98 | 2889 | . mtctr %r12 |
ad8e1ba5 | 2890 | . bctr |
ac2df442 | 2891 | |
05d0e962 AM |
2892 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2893 | variants exist too, simpler for plt calls since a new toc pointer | |
2894 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2895 | has some more complex stubs to handle calls marked with NOTOC | |
2896 | relocs from functions where r2 is not a valid toc pointer. These | |
2897 | come in two flavours, the ones shown below, and _both variants that | |
2898 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2899 | one call is from a function where r2 is used as the toc pointer but | |
2900 | needs a toc adjusting stub for small-model multi-toc, and another | |
2901 | call is from a function where r2 is not valid. | |
2902 | ppc_stub_long_branch_notoc: | |
2903 | . mflr %r12 | |
2904 | . bcl 20,31,1f | |
2905 | . 1: | |
2906 | . mflr %r11 | |
2907 | . mtlr %r12 | |
2cdcc330 AM |
2908 | . addis %r12,%r11,dest-1b@ha |
2909 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2910 | . b dest |
2911 | ||
2912 | ppc_stub_plt_branch_notoc: | |
2913 | . mflr %r12 | |
2914 | . bcl 20,31,1f | |
2915 | . 1: | |
2916 | . mflr %r11 | |
2917 | . mtlr %r12 | |
2918 | . lis %r12,xxx-1b@highest | |
f891966f | 2919 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2920 | . sldi %r12,%r12,32 |
f891966f | 2921 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2922 | . ori %r12,%r12,xxx-1b@l |
2923 | . add %r12,%r11,%r12 | |
2924 | . mtctr %r12 | |
2925 | . bctr | |
2926 | ||
2927 | ppc_stub_plt_call_notoc: | |
2928 | . mflr %r12 | |
2929 | . bcl 20,31,1f | |
2930 | . 1: | |
2931 | . mflr %r11 | |
2932 | . mtlr %r12 | |
2933 | . lis %r12,xxx-1b@highest | |
f891966f | 2934 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2935 | . sldi %r12,%r12,32 |
f891966f | 2936 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2937 | . ori %r12,%r12,xxx-1b@l |
2938 | . ldx %r12,%r11,%r12 | |
2939 | . mtctr %r12 | |
2940 | . bctr | |
2941 | ||
7c1f4227 | 2942 | There are also ELFv1 power10 variants of these stubs. |
04bdff6a | 2943 | ppc_stub_long_branch_notoc: |
d4b87b1e | 2944 | . pla %r12,dest@pcrel |
04bdff6a AM |
2945 | . b dest |
2946 | ppc_stub_plt_branch_notoc: | |
2947 | . lis %r11,(dest-1f)@highesta34 | |
2948 | . ori %r11,%r11,(dest-1f)@highera34 | |
2949 | . sldi %r11,%r11,34 | |
d4b87b1e | 2950 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2951 | . add %r12,%r11,%r12 |
2952 | . mtctr %r12 | |
2953 | . bctr | |
2954 | ppc_stub_plt_call_notoc: | |
2955 | . lis %r11,(xxx-1f)@highesta34 | |
2956 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2957 | . sldi %r11,%r11,34 | |
d4b87b1e | 2958 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2959 | . ldx %r12,%r11,%r12 |
2960 | . mtctr %r12 | |
2961 | . bctr | |
2962 | ||
05d0e962 AM |
2963 | In cases where the high instructions would add zero, they are |
2964 | omitted and following instructions modified in some cases. | |
7c1f4227 | 2965 | For example, a power10 ppc_stub_plt_call_notoc might simplify down |
04bdff6a AM |
2966 | to |
2967 | . pld %r12,xxx@pcrel | |
2968 | . mtctr %r12 | |
2969 | . bctr | |
05d0e962 AM |
2970 | |
2971 | For a given stub group (a set of sections all using the same toc | |
2972 | pointer value) there will be just one stub type used for any | |
2973 | particular function symbol. For example, if printf is called from | |
2974 | code with the tocsave optimization (ie. r2 saved in function | |
2975 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2976 | and from other code without the tocsave optimization requiring a | |
2977 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2978 | type will be created. Calls with the tocsave optimization will | |
2979 | enter this stub after the instruction saving r2. A similar | |
2980 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2981 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2982 | to call an external function like printf. If other calls to printf | |
2983 | require a ppc_stub_plt_call linkage stub then a single | |
2984 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2985 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2986 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2987 | be created and calls not requiring r2 to be saved will enter the | |
2988 | stub after the r2 save instruction. There is an analogous | |
2989 | hierarchy of long branch and plt branch stubs for local call | |
2990 | linkage. */ | |
721956f4 | 2991 | |
2cdcc330 AM |
2992 | enum ppc_stub_type |
2993 | { | |
721956f4 AM |
2994 | ppc_stub_none, |
2995 | ppc_stub_long_branch, | |
ad8e1ba5 | 2996 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2997 | ppc_stub_long_branch_notoc, |
2998 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2999 | ppc_stub_plt_branch, |
ad8e1ba5 | 3000 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
3001 | ppc_stub_plt_branch_notoc, |
3002 | ppc_stub_plt_branch_both, | |
794e51c0 | 3003 | ppc_stub_plt_call, |
7341d5e2 | 3004 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
3005 | ppc_stub_plt_call_notoc, |
3006 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
3007 | ppc_stub_global_entry, |
3008 | ppc_stub_save_res | |
721956f4 AM |
3009 | }; |
3010 | ||
6f20ed8a AM |
3011 | /* Information on stub grouping. */ |
3012 | struct map_stub | |
3013 | { | |
3014 | /* The stub section. */ | |
3015 | asection *stub_sec; | |
3016 | /* This is the section to which stubs in the group will be attached. */ | |
3017 | asection *link_sec; | |
a4b6fadd AM |
3018 | /* Next group. */ |
3019 | struct map_stub *next; | |
3020 | /* Whether to emit a copy of register save/restore functions in this | |
3021 | group. */ | |
3022 | int needs_save_res; | |
df136d64 AM |
3023 | /* Current offset within stubs after the insn restoring lr in a |
3024 | _notoc or _both stub using bcl for pc-relative addressing, or | |
3025 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
3026 | unsigned int lr_restore; | |
3027 | /* Accumulated size of EH info emitted to describe return address | |
3028 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
3029 | unsigned int eh_size; | |
3030 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
3031 | unsigned int eh_base; | |
6f20ed8a AM |
3032 | }; |
3033 | ||
2cdcc330 AM |
3034 | struct ppc_stub_hash_entry |
3035 | { | |
721956f4 AM |
3036 | /* Base hash table entry structure. */ |
3037 | struct bfd_hash_entry root; | |
3038 | ||
ad8e1ba5 AM |
3039 | enum ppc_stub_type stub_type; |
3040 | ||
6f20ed8a AM |
3041 | /* Group information. */ |
3042 | struct map_stub *group; | |
721956f4 AM |
3043 | |
3044 | /* Offset within stub_sec of the beginning of this stub. */ | |
3045 | bfd_vma stub_offset; | |
3046 | ||
3047 | /* Given the symbol's value and its section we can determine its final | |
3048 | value when building the stubs (so the stub knows where to jump. */ | |
3049 | bfd_vma target_value; | |
3050 | asection *target_section; | |
3051 | ||
721956f4 AM |
3052 | /* The symbol table entry, if any, that this was derived from. */ |
3053 | struct ppc_link_hash_entry *h; | |
e054468f | 3054 | struct plt_entry *plt_ent; |
721956f4 | 3055 | |
2d7ad24e AM |
3056 | /* Symbol type. */ |
3057 | unsigned char symtype; | |
3058 | ||
6911b7dc AM |
3059 | /* Symbol st_other. */ |
3060 | unsigned char other; | |
721956f4 AM |
3061 | }; |
3062 | ||
2cdcc330 AM |
3063 | struct ppc_branch_hash_entry |
3064 | { | |
721956f4 AM |
3065 | /* Base hash table entry structure. */ |
3066 | struct bfd_hash_entry root; | |
3067 | ||
c456f082 | 3068 | /* Offset within branch lookup table. */ |
721956f4 AM |
3069 | unsigned int offset; |
3070 | ||
3071 | /* Generation marker. */ | |
3072 | unsigned int iter; | |
3073 | }; | |
65f38f15 | 3074 | |
19e08130 AM |
3075 | /* Used to track dynamic relocations for local symbols. */ |
3076 | struct ppc_dyn_relocs | |
3077 | { | |
3078 | struct ppc_dyn_relocs *next; | |
3079 | ||
3080 | /* The input section of the reloc. */ | |
3081 | asection *sec; | |
3082 | ||
3083 | /* Total number of relocs copied for the input section. */ | |
3084 | unsigned int count : 31; | |
3085 | ||
3086 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3087 | unsigned int ifunc : 1; | |
3088 | }; | |
3089 | ||
65f38f15 AM |
3090 | struct ppc_link_hash_entry |
3091 | { | |
3092 | struct elf_link_hash_entry elf; | |
3093 | ||
2cdcc330 AM |
3094 | union |
3095 | { | |
b3fac117 AM |
3096 | /* A pointer to the most recently used stub hash entry against this |
3097 | symbol. */ | |
3098 | struct ppc_stub_hash_entry *stub_cache; | |
3099 | ||
3100 | /* A pointer to the next symbol starting with a '.' */ | |
3101 | struct ppc_link_hash_entry *next_dot_sym; | |
3102 | } u; | |
721956f4 | 3103 | |
721956f4 | 3104 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3105 | struct ppc_link_hash_entry *oh; |
721956f4 | 3106 | |
e86ce104 AM |
3107 | /* Flag function code and descriptor symbols. */ |
3108 | unsigned int is_func:1; | |
3109 | unsigned int is_func_descriptor:1; | |
908b32fc | 3110 | unsigned int fake:1; |
411e1bfb | 3111 | |
c5614fa4 AM |
3112 | /* Whether global opd/toc sym has been adjusted or not. |
3113 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3114 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3115 | unsigned int adjust_done:1; |
3116 | ||
a4b6fadd AM |
3117 | /* Set if this is an out-of-line register save/restore function, |
3118 | with non-standard calling convention. */ | |
3119 | unsigned int save_res:1; | |
3120 | ||
8b5f1ed8 AM |
3121 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3122 | even when the duplicate symbol does not provide a definition. */ | |
3123 | unsigned int non_zero_localentry:1; | |
3124 | ||
411e1bfb | 3125 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3126 | Bits are or'd into the mask as the corresponding relocs are |
3127 | encountered during check_relocs, with TLS_TLS being set when any | |
3128 | of the other TLS bits are set. tls_optimize clears bits when | |
3129 | optimizing to indicate the corresponding GOT entry type is not | |
3130 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 3131 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
3132 | These flags are also kept for local symbols. */ |
3133 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3134 | #define TLS_GD 2 /* GD reloc. */ | |
3135 | #define TLS_LD 4 /* LD reloc. */ | |
3136 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3137 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3138 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 3139 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
46e9995a | 3140 | #define TLS_EXPLICIT 256 /* TOC section TLS reloc, not stored. */ |
f961d9dd | 3141 | unsigned char tls_mask; |
37da22e5 AM |
3142 | |
3143 | /* The above field is also used to mark function symbols. In which | |
3144 | case TLS_TLS will be 0. */ | |
3145 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3146 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3147 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3148 | }; |
3149 | ||
ed7007c1 AM |
3150 | static inline struct ppc_link_hash_entry * |
3151 | ppc_elf_hash_entry (struct elf_link_hash_entry *ent) | |
3152 | { | |
3153 | return (struct ppc_link_hash_entry *) ent; | |
3154 | } | |
3155 | ||
30845f11 AM |
3156 | static inline struct elf_link_hash_entry * |
3157 | elf_hash_entry (struct ppc_link_hash_entry *ent) | |
3158 | { | |
3159 | return (struct elf_link_hash_entry *) ent; | |
3160 | } | |
3161 | ||
65f38f15 AM |
3162 | /* ppc64 ELF linker hash table. */ |
3163 | ||
3164 | struct ppc_link_hash_table | |
3165 | { | |
3166 | struct elf_link_hash_table elf; | |
3167 | ||
721956f4 AM |
3168 | /* The stub hash table. */ |
3169 | struct bfd_hash_table stub_hash_table; | |
3170 | ||
3171 | /* Another hash table for plt_branch stubs. */ | |
3172 | struct bfd_hash_table branch_hash_table; | |
3173 | ||
3b421ab3 AM |
3174 | /* Hash table for function prologue tocsave. */ |
3175 | htab_t tocsave_htab; | |
3176 | ||
e7d1c40c AM |
3177 | /* Various options and other info passed from the linker. */ |
3178 | struct ppc64_elf_params *params; | |
721956f4 | 3179 | |
6f20ed8a AM |
3180 | /* The size of sec_info below. */ |
3181 | unsigned int sec_info_arr_size; | |
3182 | ||
3183 | /* Per-section array of extra section info. Done this way rather | |
3184 | than as part of ppc64_elf_section_data so we have the info for | |
3185 | non-ppc64 sections. */ | |
3186 | struct | |
3187 | { | |
3188 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3189 | bfd_vma toc_off; |
6f20ed8a AM |
3190 | |
3191 | union | |
3192 | { | |
3193 | /* The section group that this section belongs to. */ | |
3194 | struct map_stub *group; | |
3195 | /* A temp section list pointer. */ | |
3196 | asection *list; | |
3197 | } u; | |
3198 | } *sec_info; | |
721956f4 | 3199 | |
a4b6fadd AM |
3200 | /* Linked list of groups. */ |
3201 | struct map_stub *group; | |
3202 | ||
ad8e1ba5 AM |
3203 | /* Temp used when calculating TOC pointers. */ |
3204 | bfd_vma toc_curr; | |
bf102f86 AM |
3205 | bfd *toc_bfd; |
3206 | asection *toc_first_sec; | |
ad8e1ba5 | 3207 | |
b3fac117 AM |
3208 | /* Used when adding symbols. */ |
3209 | struct ppc_link_hash_entry *dot_syms; | |
3210 | ||
33e44f2e | 3211 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3212 | asection *glink; |
9e390558 | 3213 | asection *global_entry; |
82bd7b59 | 3214 | asection *sfpr; |
2d7ad24e AM |
3215 | asection *pltlocal; |
3216 | asection *relpltlocal; | |
4ce794b7 AM |
3217 | asection *brlt; |
3218 | asection *relbrlt; | |
58d180e8 | 3219 | asection *glink_eh_frame; |
ec338859 | 3220 | |
8387904d AM |
3221 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3222 | struct ppc_link_hash_entry *tls_get_addr; | |
3223 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
9e7028aa AM |
3224 | struct ppc_link_hash_entry *tga_desc; |
3225 | struct ppc_link_hash_entry *tga_desc_fd; | |
a804e476 | 3226 | struct map_stub *tga_group; |
411e1bfb | 3227 | |
927be08e AM |
3228 | /* The size of reliplt used by got entry relocs. */ |
3229 | bfd_size_type got_reli_size; | |
3230 | ||
9b5ecbd0 | 3231 | /* Statistics. */ |
7341d5e2 | 3232 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3233 | |
ee75fd95 AM |
3234 | /* Number of stubs against global syms. */ |
3235 | unsigned long stub_globals; | |
3236 | ||
ee67d69a AM |
3237 | /* Set if we're linking code with function descriptors. */ |
3238 | unsigned int opd_abi:1; | |
3239 | ||
4c52953f | 3240 | /* Support for multiple toc sections. */ |
33c0ec9d | 3241 | unsigned int do_multi_toc:1; |
4c52953f | 3242 | unsigned int multi_toc_needed:1; |
927be08e | 3243 | unsigned int second_toc_pass:1; |
67f0cbdb | 3244 | unsigned int do_toc_opt:1; |
4c52953f | 3245 | |
9a23f96e AM |
3246 | /* Set if tls optimization is enabled. */ |
3247 | unsigned int do_tls_opt:1; | |
3248 | ||
3e04d765 AM |
3249 | /* Set if inline plt calls should be converted to direct calls. */ |
3250 | unsigned int can_convert_all_inline_plt:1; | |
3251 | ||
5d1634d7 | 3252 | /* Set on error. */ |
99877b66 | 3253 | unsigned int stub_error:1; |
721956f4 | 3254 | |
8c5b4e52 AM |
3255 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3256 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3257 | |
f378ab09 AM |
3258 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3259 | unsigned int has_plt_localentry0:1; | |
3260 | ||
5663e321 AM |
3261 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3262 | unsigned int notoc_plt:1; | |
3263 | ||
e10a07b3 AM |
3264 | /* Whether any code linked seems to be Power10. */ |
3265 | unsigned int has_power10_relocs:1; | |
3266 | ||
721956f4 AM |
3267 | /* Incremented every time we size stubs. */ |
3268 | unsigned int stub_iteration; | |
65f38f15 AM |
3269 | }; |
3270 | ||
4c52953f AM |
3271 | /* Rename some of the generic section flags to better document how they |
3272 | are used here. */ | |
b0dddeec AM |
3273 | |
3274 | /* Nonzero if this section has TLS related relocations. */ | |
3275 | #define has_tls_reloc sec_flg0 | |
3276 | ||
9737e8af AM |
3277 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3278 | relocations. */ | |
3279 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3280 | |
3281 | /* Nonzero if this section has any toc or got relocs. */ | |
3282 | #define has_toc_reloc sec_flg2 | |
3283 | ||
3284 | /* Nonzero if this section has a call to another section that uses | |
3285 | the toc or got. */ | |
d77c8a4b | 3286 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3287 | |
3288 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3289 | #define call_check_in_progress sec_flg4 |
70cc837d | 3290 | #define call_check_done sec_flg5 |
4c52953f | 3291 | |
65f38f15 AM |
3292 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3293 | ||
3294 | #define ppc_hash_table(p) \ | |
573eb292 AM |
3295 | ((is_elf_hash_table ((p)->hash) \ |
3296 | && elf_hash_table_id (elf_hash_table (p)) == PPC64_ELF_DATA) \ | |
3297 | ? (struct ppc_link_hash_table *) (p)->hash : NULL) | |
65f38f15 | 3298 | |
721956f4 AM |
3299 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3300 | ((struct ppc_stub_hash_entry *) \ | |
3301 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3302 | ||
3303 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3304 | ((struct ppc_branch_hash_entry *) \ | |
3305 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3306 | ||
3307 | /* Create an entry in the stub hash table. */ | |
3308 | ||
3309 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3310 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3311 | struct bfd_hash_table *table, | |
3312 | const char *string) | |
721956f4 AM |
3313 | { |
3314 | /* Allocate the structure if it has not already been allocated by a | |
3315 | subclass. */ | |
3316 | if (entry == NULL) | |
3317 | { | |
3318 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3319 | if (entry == NULL) | |
3320 | return entry; | |
3321 | } | |
3322 | ||
3323 | /* Call the allocation method of the superclass. */ | |
3324 | entry = bfd_hash_newfunc (entry, table, string); | |
3325 | if (entry != NULL) | |
3326 | { | |
3327 | struct ppc_stub_hash_entry *eh; | |
3328 | ||
3329 | /* Initialize the local fields. */ | |
3330 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3331 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3332 | eh->group = NULL; |
721956f4 AM |
3333 | eh->stub_offset = 0; |
3334 | eh->target_value = 0; | |
3335 | eh->target_section = NULL; | |
721956f4 | 3336 | eh->h = NULL; |
6911b7dc | 3337 | eh->plt_ent = NULL; |
6911b7dc | 3338 | eh->other = 0; |
721956f4 AM |
3339 | } |
3340 | ||
3341 | return entry; | |
3342 | } | |
3343 | ||
3344 | /* Create an entry in the branch hash table. */ | |
3345 | ||
3346 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3347 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3348 | struct bfd_hash_table *table, | |
3349 | const char *string) | |
721956f4 AM |
3350 | { |
3351 | /* Allocate the structure if it has not already been allocated by a | |
3352 | subclass. */ | |
3353 | if (entry == NULL) | |
3354 | { | |
3355 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3356 | if (entry == NULL) | |
3357 | return entry; | |
3358 | } | |
3359 | ||
3360 | /* Call the allocation method of the superclass. */ | |
3361 | entry = bfd_hash_newfunc (entry, table, string); | |
3362 | if (entry != NULL) | |
3363 | { | |
3364 | struct ppc_branch_hash_entry *eh; | |
3365 | ||
3366 | /* Initialize the local fields. */ | |
3367 | eh = (struct ppc_branch_hash_entry *) entry; | |
3368 | eh->offset = 0; | |
3369 | eh->iter = 0; | |
3370 | } | |
3371 | ||
3372 | return entry; | |
3373 | } | |
3374 | ||
65f38f15 AM |
3375 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3376 | ||
3377 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3378 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3379 | struct bfd_hash_table *table, | |
3380 | const char *string) | |
65f38f15 AM |
3381 | { |
3382 | /* Allocate the structure if it has not already been allocated by a | |
3383 | subclass. */ | |
3384 | if (entry == NULL) | |
3385 | { | |
3386 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3387 | if (entry == NULL) | |
3388 | return entry; | |
3389 | } | |
3390 | ||
3391 | /* Call the allocation method of the superclass. */ | |
3392 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3393 | if (entry != NULL) | |
3394 | { | |
3395 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3396 | ||
b3fac117 | 3397 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3398 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3399 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3400 | ||
3401 | /* When making function calls, old ABI code references function entry | |
3402 | points (dot symbols), while new ABI code references the function | |
3403 | descriptor symbol. We need to make any combination of reference and | |
3404 | definition work together, without breaking archive linking. | |
3405 | ||
3406 | For a defined function "foo" and an undefined call to "bar": | |
3407 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3408 | "bar" too). | |
3409 | A new object defines "foo" and references "bar". | |
3410 | ||
3411 | A new object thus has no problem with its undefined symbols being | |
3412 | satisfied by definitions in an old object. On the other hand, the | |
3413 | old object won't have ".bar" satisfied by a new object. | |
3414 | ||
3415 | Keep a list of newly added dot-symbols. */ | |
3416 | ||
3417 | if (string[0] == '.') | |
3418 | { | |
3419 | struct ppc_link_hash_table *htab; | |
3420 | ||
3421 | htab = (struct ppc_link_hash_table *) table; | |
3422 | eh->u.next_dot_sym = htab->dot_syms; | |
3423 | htab->dot_syms = eh; | |
3424 | } | |
65f38f15 AM |
3425 | } |
3426 | ||
3427 | return entry; | |
3428 | } | |
3429 | ||
2cdcc330 AM |
3430 | struct tocsave_entry |
3431 | { | |
3b421ab3 AM |
3432 | asection *sec; |
3433 | bfd_vma offset; | |
3434 | }; | |
3435 | ||
3436 | static hashval_t | |
3437 | tocsave_htab_hash (const void *p) | |
3438 | { | |
3439 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3440 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3441 | } |
3442 | ||
3443 | static int | |
3444 | tocsave_htab_eq (const void *p1, const void *p2) | |
3445 | { | |
3446 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3447 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3448 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3449 | } | |
3450 | ||
68faa637 AM |
3451 | /* Destroy a ppc64 ELF linker hash table. */ |
3452 | ||
3453 | static void | |
d495ab0d | 3454 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3455 | { |
d495ab0d | 3456 | struct ppc_link_hash_table *htab; |
68faa637 | 3457 | |
d495ab0d | 3458 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3459 | if (htab->tocsave_htab) |
3460 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3461 | bfd_hash_table_free (&htab->branch_hash_table); |
3462 | bfd_hash_table_free (&htab->stub_hash_table); | |
3463 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3464 | } |
3465 | ||
65f38f15 AM |
3466 | /* Create a ppc64 ELF linker hash table. */ |
3467 | ||
3468 | static struct bfd_link_hash_table * | |
4ce794b7 | 3469 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3470 | { |
3471 | struct ppc_link_hash_table *htab; | |
986f0783 | 3472 | size_t amt = sizeof (struct ppc_link_hash_table); |
65f38f15 | 3473 | |
4ce794b7 | 3474 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3475 | if (htab == NULL) |
3476 | return NULL; | |
3477 | ||
66eb6687 | 3478 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3479 | sizeof (struct ppc_link_hash_entry), |
3480 | PPC64_ELF_DATA)) | |
65f38f15 | 3481 | { |
e2d34d7d | 3482 | free (htab); |
65f38f15 AM |
3483 | return NULL; |
3484 | } | |
3485 | ||
721956f4 | 3486 | /* Init the stub hash table too. */ |
66eb6687 AM |
3487 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3488 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3489 | { |
d495ab0d | 3490 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3491 | return NULL; |
3492 | } | |
721956f4 AM |
3493 | |
3494 | /* And the branch hash table. */ | |
66eb6687 AM |
3495 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3496 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3497 | { |
3498 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3499 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3500 | return NULL; |
3501 | } | |
721956f4 | 3502 | |
3b421ab3 AM |
3503 | htab->tocsave_htab = htab_try_create (1024, |
3504 | tocsave_htab_hash, | |
3505 | tocsave_htab_eq, | |
3506 | NULL); | |
3507 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3508 | { |
d495ab0d | 3509 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3510 | return NULL; |
3511 | } | |
d495ab0d | 3512 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3513 | |
3254fd24 AM |
3514 | /* Initializing two fields of the union is just cosmetic. We really |
3515 | only care about glist, but when compiled on a 32-bit host the | |
3516 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3517 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3518 | htab->elf.init_got_refcount.refcount = 0; |
3519 | htab->elf.init_got_refcount.glist = NULL; | |
3520 | htab->elf.init_plt_refcount.refcount = 0; | |
3521 | htab->elf.init_plt_refcount.glist = NULL; | |
3522 | htab->elf.init_got_offset.offset = 0; | |
3523 | htab->elf.init_got_offset.glist = NULL; | |
3524 | htab->elf.init_plt_offset.offset = 0; | |
3525 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3526 | |
65f38f15 AM |
3527 | return &htab->elf.root; |
3528 | } | |
3529 | ||
bfeb4a28 AM |
3530 | /* Create sections for linker generated code. */ |
3531 | ||
3532 | static bfd_boolean | |
3533 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3534 | { | |
3535 | struct ppc_link_hash_table *htab; | |
3536 | flagword flags; | |
3537 | ||
3538 | htab = ppc_hash_table (info); | |
3539 | ||
bfeb4a28 AM |
3540 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3541 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3542 | if (htab->params->save_restore_funcs) |
3543 | { | |
3544 | /* Create .sfpr for code to save and restore fp regs. */ | |
3545 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3546 | flags); | |
3547 | if (htab->sfpr == NULL | |
fd361982 | 3548 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
b32547cd AM |
3549 | return FALSE; |
3550 | } | |
3551 | ||
3552 | if (bfd_link_relocatable (info)) | |
3553 | return TRUE; | |
bfeb4a28 AM |
3554 | |
3555 | /* Create .glink for lazy dynamic linking support. */ | |
3556 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3557 | flags); | |
3558 | if (htab->glink == NULL | |
fd361982 | 3559 | || !bfd_set_section_alignment (htab->glink, 3)) |
bfeb4a28 AM |
3560 | return FALSE; |
3561 | ||
9e390558 AM |
3562 | /* The part of .glink used by global entry stubs, separate so that |
3563 | it can be aligned appropriately without affecting htab->glink. */ | |
3564 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3565 | flags); | |
3566 | if (htab->global_entry == NULL | |
fd361982 | 3567 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
9e390558 AM |
3568 | return FALSE; |
3569 | ||
bfeb4a28 AM |
3570 | if (!info->no_ld_generated_unwind_info) |
3571 | { | |
3572 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3573 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3574 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3575 | ".eh_frame", | |
3576 | flags); | |
3577 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3578 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
bfeb4a28 AM |
3579 | return FALSE; |
3580 | } | |
3581 | ||
3582 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3583 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3584 | if (htab->elf.iplt == NULL | |
fd361982 | 3585 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
bfeb4a28 AM |
3586 | return FALSE; |
3587 | ||
3588 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3589 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3590 | htab->elf.irelplt |
3591 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3592 | if (htab->elf.irelplt == NULL | |
fd361982 | 3593 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3594 | return FALSE; |
3595 | ||
3596 | /* Create branch lookup table for plt_branch stubs. */ | |
3597 | flags = (SEC_ALLOC | SEC_LOAD | |
3598 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3599 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3600 | flags); | |
3601 | if (htab->brlt == NULL | |
fd361982 | 3602 | || !bfd_set_section_alignment (htab->brlt, 3)) |
bfeb4a28 AM |
3603 | return FALSE; |
3604 | ||
2d7ad24e AM |
3605 | /* Local plt entries, put in .branch_lt but a separate section for |
3606 | convenience. */ | |
3607 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3608 | flags); | |
3609 | if (htab->pltlocal == NULL | |
fd361982 | 3610 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
2d7ad24e AM |
3611 | return FALSE; |
3612 | ||
0e1862bb | 3613 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3614 | return TRUE; |
3615 | ||
3616 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3617 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3618 | htab->relbrlt |
3619 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3620 | if (htab->relbrlt == NULL |
fd361982 | 3621 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
bfeb4a28 AM |
3622 | return FALSE; |
3623 | ||
2d7ad24e AM |
3624 | htab->relpltlocal |
3625 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3626 | if (htab->relpltlocal == NULL | |
fd361982 | 3627 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
2d7ad24e AM |
3628 | return FALSE; |
3629 | ||
bfeb4a28 AM |
3630 | return TRUE; |
3631 | } | |
3632 | ||
e717da7e AM |
3633 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3634 | ||
bfeb4a28 | 3635 | bfd_boolean |
e7d1c40c AM |
3636 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3637 | struct ppc64_elf_params *params) | |
e717da7e AM |
3638 | { |
3639 | struct ppc_link_hash_table *htab; | |
3640 | ||
e7d1c40c | 3641 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3642 | |
3643 | /* Always hook our dynamic sections into the first bfd, which is the | |
3644 | linker created stub bfd. This ensures that the GOT header is at | |
3645 | the start of the output TOC section. */ | |
3646 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3647 | htab->elf.dynobj = params->stub_bfd; |
3648 | htab->params = params; | |
bfeb4a28 | 3649 | |
bfeb4a28 | 3650 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3651 | } |
3652 | ||
721956f4 AM |
3653 | /* Build a name for an entry in the stub hash table. */ |
3654 | ||
3655 | static char * | |
4ce794b7 AM |
3656 | ppc_stub_name (const asection *input_section, |
3657 | const asection *sym_sec, | |
3658 | const struct ppc_link_hash_entry *h, | |
3659 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3660 | { |
3661 | char *stub_name; | |
bcaa2f82 | 3662 | ssize_t len; |
721956f4 AM |
3663 | |
3664 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3665 | offsets from a sym as a branch target? In fact, we could | |
3666 | probably assume the addend is always zero. */ | |
3667 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3668 | ||
3669 | if (h) | |
3670 | { | |
3671 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3672 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3673 | if (stub_name == NULL) |
3674 | return stub_name; | |
3675 | ||
bcaa2f82 AM |
3676 | len = sprintf (stub_name, "%08x.%s+%x", |
3677 | input_section->id & 0xffffffff, | |
3678 | h->elf.root.root.string, | |
3679 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3680 | } |
3681 | else | |
3682 | { | |
ad8e1ba5 | 3683 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3684 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3685 | if (stub_name == NULL) |
3686 | return stub_name; | |
3687 | ||
bcaa2f82 AM |
3688 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3689 | input_section->id & 0xffffffff, | |
3690 | sym_sec->id & 0xffffffff, | |
3691 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3692 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3693 | } |
bcaa2f82 | 3694 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3695 | stub_name[len - 2] = 0; |
721956f4 AM |
3696 | return stub_name; |
3697 | } | |
3698 | ||
e10a07b3 AM |
3699 | /* If mixing power10 with non-power10 code and --power10-stubs is not |
3700 | specified (or is auto) then calls using @notoc relocations that | |
3701 | need a stub will utilize power10 instructions in the stub, and | |
3702 | calls without @notoc relocations will not use power10 instructions. | |
3703 | The two classes of stubs are stored in separate stub_hash_table | |
3704 | entries having the same key string. The two entries will always be | |
3705 | adjacent on entry->root.next chain, even if hash table resizing | |
3706 | occurs. This function selects the correct entry to use. */ | |
3707 | ||
3708 | static struct ppc_stub_hash_entry * | |
3709 | select_alt_stub (struct ppc_stub_hash_entry *entry, bfd_boolean notoc) | |
3710 | { | |
3711 | bfd_boolean have_notoc; | |
3712 | ||
3713 | have_notoc = (entry->stub_type == ppc_stub_plt_call_notoc | |
3714 | || entry->stub_type == ppc_stub_plt_branch_notoc | |
3715 | || entry->stub_type == ppc_stub_long_branch_notoc); | |
3716 | ||
3717 | if (have_notoc != notoc) | |
3718 | { | |
3719 | const char *stub_name = entry->root.string; | |
3720 | ||
3721 | entry = (struct ppc_stub_hash_entry *) entry->root.next; | |
3722 | if (entry != NULL | |
3723 | && entry->root.string != stub_name) | |
3724 | entry = NULL; | |
3725 | } | |
3726 | ||
3727 | return entry; | |
3728 | } | |
3729 | ||
721956f4 AM |
3730 | /* Look up an entry in the stub hash. Stub entries are cached because |
3731 | creating the stub name takes a bit of time. */ | |
3732 | ||
3733 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3734 | ppc_get_stub_entry (const asection *input_section, |
3735 | const asection *sym_sec, | |
039b3fef | 3736 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3737 | const Elf_Internal_Rela *rel, |
3738 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3739 | { |
3740 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3741 | struct map_stub *group; |
721956f4 AM |
3742 | |
3743 | /* If this input section is part of a group of sections sharing one | |
3744 | stub section, then use the id of the first section in the group. | |
3745 | Stub names need to include a section id, as there may well be | |
3746 | more than one stub used to reach say, printf, and we need to | |
3747 | distinguish between them. */ | |
6f20ed8a | 3748 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3749 | if (group == NULL) |
3750 | return NULL; | |
721956f4 | 3751 | |
b3fac117 AM |
3752 | if (h != NULL && h->u.stub_cache != NULL |
3753 | && h->u.stub_cache->h == h | |
6f20ed8a | 3754 | && h->u.stub_cache->group == group) |
721956f4 | 3755 | { |
b3fac117 | 3756 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3757 | } |
3758 | else | |
3759 | { | |
3760 | char *stub_name; | |
3761 | ||
6f20ed8a | 3762 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3763 | if (stub_name == NULL) |
3764 | return NULL; | |
3765 | ||
3766 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3767 | stub_name, FALSE, FALSE); |
721956f4 | 3768 | if (h != NULL) |
b3fac117 | 3769 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3770 | |
3771 | free (stub_name); | |
3772 | } | |
3773 | ||
e10a07b3 AM |
3774 | if (stub_entry != NULL && htab->params->power10_stubs == -1) |
3775 | { | |
3776 | bfd_boolean notoc = ELF64_R_TYPE (rel->r_info) == R_PPC64_REL24_NOTOC; | |
3777 | ||
3778 | stub_entry = select_alt_stub (stub_entry, notoc); | |
3779 | } | |
3780 | ||
721956f4 AM |
3781 | return stub_entry; |
3782 | } | |
3783 | ||
3784 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3785 | stub entry are initialised. */ | |
3786 | ||
3787 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3788 | ppc_add_stub (const char *stub_name, |
3789 | asection *section, | |
25f53a85 | 3790 | struct bfd_link_info *info) |
721956f4 | 3791 | { |
25f53a85 | 3792 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3793 | struct map_stub *group; |
721956f4 AM |
3794 | asection *link_sec; |
3795 | asection *stub_sec; | |
3796 | struct ppc_stub_hash_entry *stub_entry; | |
3797 | ||
6f20ed8a AM |
3798 | group = htab->sec_info[section->id].u.group; |
3799 | link_sec = group->link_sec; | |
3800 | stub_sec = group->stub_sec; | |
721956f4 AM |
3801 | if (stub_sec == NULL) |
3802 | { | |
6f20ed8a AM |
3803 | size_t namelen; |
3804 | bfd_size_type len; | |
3805 | char *s_name; | |
721956f4 | 3806 | |
6f20ed8a AM |
3807 | namelen = strlen (link_sec->name); |
3808 | len = namelen + sizeof (STUB_SUFFIX); | |
3809 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3810 | if (s_name == NULL) | |
3811 | return NULL; | |
721956f4 | 3812 | |
6f20ed8a AM |
3813 | memcpy (s_name, link_sec->name, namelen); |
3814 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3815 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3816 | if (stub_sec == NULL) | |
3817 | return NULL; | |
3818 | group->stub_sec = stub_sec; | |
721956f4 AM |
3819 | } |
3820 | ||
3821 | /* Enter this entry into the linker stub hash table. */ | |
3822 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3823 | TRUE, FALSE); |
721956f4 AM |
3824 | if (stub_entry == NULL) |
3825 | { | |
695344c0 | 3826 | /* xgettext:c-format */ |
cf97bcb0 AM |
3827 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3828 | section->owner, stub_name); | |
721956f4 AM |
3829 | return NULL; |
3830 | } | |
3831 | ||
6f20ed8a | 3832 | stub_entry->group = group; |
721956f4 | 3833 | stub_entry->stub_offset = 0; |
721956f4 AM |
3834 | return stub_entry; |
3835 | } | |
3836 | ||
e717da7e AM |
3837 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3838 | not already done. */ | |
65f38f15 | 3839 | |
b34976b6 | 3840 | static bfd_boolean |
e717da7e | 3841 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3842 | { |
e717da7e AM |
3843 | asection *got, *relgot; |
3844 | flagword flags; | |
3845 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3846 | |
0c8d6e5c | 3847 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3848 | return FALSE; |
4dfe6ac6 NC |
3849 | if (htab == NULL) |
3850 | return FALSE; | |
0ffa91dd | 3851 | |
33e44f2e AM |
3852 | if (!htab->elf.sgot |
3853 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3854 | return FALSE; | |
e717da7e AM |
3855 | |
3856 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3857 | | SEC_LINKER_CREATED); | |
3858 | ||
c456f082 | 3859 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3860 | if (!got |
fd361982 | 3861 | || !bfd_set_section_alignment (got, 3)) |
e717da7e | 3862 | return FALSE; |
65f38f15 | 3863 | |
c456f082 AM |
3864 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3865 | flags | SEC_READONLY); | |
e717da7e | 3866 | if (!relgot |
fd361982 | 3867 | || !bfd_set_section_alignment (relgot, 3)) |
b34976b6 | 3868 | return FALSE; |
e717da7e AM |
3869 | |
3870 | ppc64_elf_tdata (abfd)->got = got; | |
3871 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3872 | return TRUE; |
65f38f15 | 3873 | } |
5bd4f169 | 3874 | |
b31867b6 AM |
3875 | /* Follow indirect and warning symbol links. */ |
3876 | ||
3877 | static inline struct bfd_link_hash_entry * | |
3878 | follow_link (struct bfd_link_hash_entry *h) | |
3879 | { | |
3880 | while (h->type == bfd_link_hash_indirect | |
3881 | || h->type == bfd_link_hash_warning) | |
3882 | h = h->u.i.link; | |
3883 | return h; | |
3884 | } | |
3885 | ||
3886 | static inline struct elf_link_hash_entry * | |
3887 | elf_follow_link (struct elf_link_hash_entry *h) | |
3888 | { | |
3889 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3890 | } | |
3891 | ||
3892 | static inline struct ppc_link_hash_entry * | |
3893 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3894 | { | |
ed7007c1 | 3895 | return ppc_elf_hash_entry (elf_follow_link (&h->elf)); |
b31867b6 AM |
3896 | } |
3897 | ||
40d16e0b AM |
3898 | /* Merge PLT info on FROM with that on TO. */ |
3899 | ||
3900 | static void | |
3901 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3902 | struct ppc_link_hash_entry *to) | |
3903 | { | |
3904 | if (from->elf.plt.plist != NULL) | |
3905 | { | |
3906 | if (to->elf.plt.plist != NULL) | |
3907 | { | |
3908 | struct plt_entry **entp; | |
3909 | struct plt_entry *ent; | |
3910 | ||
3911 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3912 | { | |
3913 | struct plt_entry *dent; | |
3914 | ||
3915 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3916 | if (dent->addend == ent->addend) | |
3917 | { | |
3918 | dent->plt.refcount += ent->plt.refcount; | |
3919 | *entp = ent->next; | |
3920 | break; | |
3921 | } | |
3922 | if (dent == NULL) | |
3923 | entp = &ent->next; | |
3924 | } | |
3925 | *entp = to->elf.plt.plist; | |
3926 | } | |
3927 | ||
3928 | to->elf.plt.plist = from->elf.plt.plist; | |
3929 | from->elf.plt.plist = NULL; | |
3930 | } | |
3931 | } | |
3932 | ||
65f38f15 AM |
3933 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3934 | ||
3935 | static void | |
fcfa13d2 AM |
3936 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3937 | struct elf_link_hash_entry *dir, | |
3938 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3939 | { |
3940 | struct ppc_link_hash_entry *edir, *eind; | |
3941 | ||
ed7007c1 AM |
3942 | edir = ppc_elf_hash_entry (dir); |
3943 | eind = ppc_elf_hash_entry (ind); | |
65f38f15 | 3944 | |
c79d6685 AM |
3945 | edir->is_func |= eind->is_func; |
3946 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3947 | edir->tls_mask |= eind->tls_mask; | |
3948 | if (eind->oh != NULL) | |
3949 | edir->oh = ppc_follow_link (eind->oh); | |
3950 | ||
474436e6 | 3951 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3952 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3953 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3954 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3955 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3956 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3957 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3958 | |
d311bc8b AM |
3959 | /* If we were called to copy over info for a weak sym, don't copy |
3960 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3961 | in order to simplify readonly_dynrelocs and save a field in the | |
3962 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3963 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3964 | are then tested. */ |
d311bc8b | 3965 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3966 | return; |
d311bc8b | 3967 | |
411e1bfb | 3968 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
190eb1dd | 3969 | if (ind->dyn_relocs != NULL) |
65f38f15 | 3970 | { |
190eb1dd | 3971 | if (dir->dyn_relocs != NULL) |
bbd7ec4a | 3972 | { |
6061a67d AM |
3973 | struct elf_dyn_relocs **pp; |
3974 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3975 | |
fcfa13d2 | 3976 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a | 3977 | list. Merge any entries against the same section. */ |
190eb1dd | 3978 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
bbd7ec4a | 3979 | { |
6061a67d | 3980 | struct elf_dyn_relocs *q; |
bbd7ec4a | 3981 | |
190eb1dd | 3982 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
bbd7ec4a AM |
3983 | if (q->sec == p->sec) |
3984 | { | |
3985 | q->pc_count += p->pc_count; | |
3986 | q->count += p->count; | |
3987 | *pp = p->next; | |
3988 | break; | |
3989 | } | |
3990 | if (q == NULL) | |
3991 | pp = &p->next; | |
3992 | } | |
190eb1dd | 3993 | *pp = dir->dyn_relocs; |
bbd7ec4a AM |
3994 | } |
3995 | ||
190eb1dd L |
3996 | dir->dyn_relocs = ind->dyn_relocs; |
3997 | ind->dyn_relocs = NULL; | |
65f38f15 | 3998 | } |
65f38f15 | 3999 | |
81848ca0 AM |
4000 | /* Copy over got entries that we may have already seen to the |
4001 | symbol which just became indirect. */ | |
411e1bfb AM |
4002 | if (eind->elf.got.glist != NULL) |
4003 | { | |
4004 | if (edir->elf.got.glist != NULL) | |
4005 | { | |
4006 | struct got_entry **entp; | |
4007 | struct got_entry *ent; | |
4008 | ||
4009 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4010 | { | |
4011 | struct got_entry *dent; | |
4012 | ||
4013 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4014 | if (dent->addend == ent->addend | |
e717da7e | 4015 | && dent->owner == ent->owner |
411e1bfb AM |
4016 | && dent->tls_type == ent->tls_type) |
4017 | { | |
4018 | dent->got.refcount += ent->got.refcount; | |
4019 | *entp = ent->next; | |
4020 | break; | |
4021 | } | |
4022 | if (dent == NULL) | |
4023 | entp = &ent->next; | |
4024 | } | |
4025 | *entp = edir->elf.got.glist; | |
4026 | } | |
4027 | ||
4028 | edir->elf.got.glist = eind->elf.got.glist; | |
4029 | eind->elf.got.glist = NULL; | |
4030 | } | |
4031 | ||
4032 | /* And plt entries. */ | |
40d16e0b | 4033 | move_plt_plist (eind, edir); |
411e1bfb | 4034 | |
fcfa13d2 | 4035 | if (eind->elf.dynindx != -1) |
411e1bfb | 4036 | { |
fcfa13d2 AM |
4037 | if (edir->elf.dynindx != -1) |
4038 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4039 | edir->elf.dynstr_index); | |
411e1bfb AM |
4040 | edir->elf.dynindx = eind->elf.dynindx; |
4041 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4042 | eind->elf.dynindx = -1; | |
4043 | eind->elf.dynstr_index = 0; | |
4044 | } | |
411e1bfb AM |
4045 | } |
4046 | ||
8387904d AM |
4047 | /* Find the function descriptor hash entry from the given function code |
4048 | hash entry FH. Link the entries via their OH fields. */ | |
4049 | ||
4050 | static struct ppc_link_hash_entry * | |
b31867b6 | 4051 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4052 | { |
4053 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4054 | ||
4055 | if (fdh == NULL) | |
4056 | { | |
4057 | const char *fd_name = fh->elf.root.root.string + 1; | |
4058 | ||
ed7007c1 AM |
4059 | fdh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, fd_name, |
4060 | FALSE, FALSE, FALSE)); | |
b31867b6 AM |
4061 | if (fdh == NULL) |
4062 | return fdh; | |
4063 | ||
4064 | fdh->is_func_descriptor = 1; | |
4065 | fdh->oh = fh; | |
4066 | fh->is_func = 1; | |
4067 | fh->oh = fdh; | |
8387904d AM |
4068 | } |
4069 | ||
8c5b4e52 AM |
4070 | fdh = ppc_follow_link (fdh); |
4071 | fdh->is_func_descriptor = 1; | |
4072 | fdh->oh = fh; | |
4073 | return fdh; | |
8387904d AM |
4074 | } |
4075 | ||
8c5b4e52 | 4076 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4077 | |
4078 | static struct ppc_link_hash_entry * | |
4079 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4080 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4081 | { |
8c5b4e52 AM |
4082 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4083 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4084 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4085 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4086 | ? BSF_WEAK | |
4087 | : BSF_GLOBAL); | |
4088 | ||
4089 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4090 | fh->elf.root.root.string + 1, | |
4091 | flags, bfd_und_section_ptr, 0, | |
4092 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
4093 | return NULL; |
4094 | ||
4095 | fdh = (struct ppc_link_hash_entry *) bh; | |
4096 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4097 | fdh->fake = 1; |
4098 | fdh->is_func_descriptor = 1; | |
4099 | fdh->oh = fh; | |
4100 | fh->is_func = 1; | |
4101 | fh->oh = fdh; | |
bb700d78 AM |
4102 | return fdh; |
4103 | } | |
4104 | ||
8387904d AM |
4105 | /* Fix function descriptor symbols defined in .opd sections to be |
4106 | function type. */ | |
555cd476 AM |
4107 | |
4108 | static bfd_boolean | |
c16153ae | 4109 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4110 | struct bfd_link_info *info, |
555cd476 | 4111 | Elf_Internal_Sym *isym, |
6911b7dc | 4112 | const char **name, |
555cd476 AM |
4113 | flagword *flags ATTRIBUTE_UNUSED, |
4114 | asection **sec, | |
b53dfeb2 | 4115 | bfd_vma *value) |
555cd476 | 4116 | { |
b53dfeb2 | 4117 | if (*sec != NULL |
f1885d1e | 4118 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4119 | { |
4120 | asection *code_sec; | |
4121 | ||
4122 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4123 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4124 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4125 | ||
4126 | /* If the symbol is a function defined in .opd, and the function | |
4127 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4128 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4129 | && (*sec)->reloc_count != 0 |
4130 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4131 | FALSE) != (bfd_vma) -1 | |
4132 | && discarded_section (code_sec)) | |
4133 | { | |
4134 | *sec = bfd_und_section_ptr; | |
4135 | isym->st_shndx = SHN_UNDEF; | |
4136 | } | |
4137 | } | |
dbd1e97e AM |
4138 | else if (*sec != NULL |
4139 | && strcmp ((*sec)->name, ".toc") == 0 | |
4140 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4141 | { | |
4142 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4143 | if (htab != NULL) | |
4144 | htab->params->object_in_toc = 1; | |
4145 | } | |
433817dd | 4146 | |
6911b7dc AM |
4147 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4148 | { | |
4149 | if (abiversion (ibfd) == 0) | |
4150 | set_abiversion (ibfd, 2); | |
4151 | else if (abiversion (ibfd) == 1) | |
4152 | { | |
cf97bcb0 AM |
4153 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4154 | " for ABI version 1"), *name); | |
6911b7dc AM |
4155 | bfd_set_error (bfd_error_bad_value); |
4156 | return FALSE; | |
4157 | } | |
4158 | } | |
4159 | ||
555cd476 AM |
4160 | return TRUE; |
4161 | } | |
4162 | ||
6911b7dc AM |
4163 | /* Merge non-visibility st_other attributes: local entry point. */ |
4164 | ||
4165 | static void | |
4166 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5160d0f3 | 4167 | unsigned int st_other, |
6911b7dc AM |
4168 | bfd_boolean definition, |
4169 | bfd_boolean dynamic) | |
4170 | { | |
f378ab09 | 4171 | if (definition && (!dynamic || !h->def_regular)) |
5160d0f3 | 4172 | h->other = ((st_other & ~ELF_ST_VISIBILITY (-1)) |
6911b7dc AM |
4173 | | ELF_ST_VISIBILITY (h->other)); |
4174 | } | |
4175 | ||
8c5b4e52 AM |
4176 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4177 | we now have a real symbol. */ | |
4178 | ||
4179 | static bfd_boolean | |
4180 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4181 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4182 | asection **psec ATTRIBUTE_UNUSED, |
4183 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4184 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4185 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4186 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4187 | { | |
ed7007c1 | 4188 | ppc_elf_hash_entry (h)->fake = 0; |
8b5f1ed8 | 4189 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
ed7007c1 | 4190 | ppc_elf_hash_entry (h)->non_zero_localentry = 1; |
8c5b4e52 AM |
4191 | return TRUE; |
4192 | } | |
4193 | ||
8387904d | 4194 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4195 | inclusion of a new ABI object archive that defines "bar". |
4196 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4197 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4198 | |
4199 | static struct elf_link_hash_entry * | |
4200 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4201 | struct bfd_link_info *info, | |
4202 | const char *name) | |
4203 | { | |
4204 | struct elf_link_hash_entry *h; | |
4205 | char *dot_name; | |
4206 | size_t len; | |
4207 | ||
4208 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4209 | if (h != NULL |
4210 | /* Don't return this sym if it is a fake function descriptor | |
4211 | created by add_symbol_adjust. */ | |
ed7007c1 | 4212 | && !ppc_elf_hash_entry (h)->fake) |
8387904d AM |
4213 | return h; |
4214 | ||
4215 | if (name[0] == '.') | |
4216 | return h; | |
4217 | ||
4218 | len = strlen (name); | |
4219 | dot_name = bfd_alloc (abfd, len + 2); | |
4220 | if (dot_name == NULL) | |
e99955cd | 4221 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4222 | dot_name[0] = '.'; |
4223 | memcpy (dot_name + 1, name, len + 1); | |
4224 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4225 | bfd_release (abfd, dot_name); | |
a804e476 AM |
4226 | if (h != NULL) |
4227 | return h; | |
4228 | ||
4229 | if (strcmp (name, "__tls_get_addr_opt") == 0) | |
4230 | h = _bfd_elf_archive_symbol_lookup (abfd, info, "__tls_get_addr_desc"); | |
8387904d AM |
4231 | return h; |
4232 | } | |
4233 | ||
4234 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4235 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4236 | are made weak. This stops later archive searches from including an | |
4237 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4238 | prevents the linker complaining about undefined symbols. |
4239 | We also check and correct mismatched symbol visibility here. The | |
4240 | most restrictive visibility of the function descriptor and the | |
4241 | function entry symbol is used. */ | |
8387904d AM |
4242 | |
4243 | static bfd_boolean | |
b3fac117 | 4244 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4245 | { |
8387904d AM |
4246 | struct ppc_link_hash_table *htab; |
4247 | struct ppc_link_hash_entry *fdh; | |
4248 | ||
b3fac117 AM |
4249 | if (eh->elf.root.type == bfd_link_hash_warning) |
4250 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4251 | |
8400d40d AM |
4252 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4253 | return TRUE; | |
4254 | ||
b3fac117 AM |
4255 | if (eh->elf.root.root.string[0] != '.') |
4256 | abort (); | |
8387904d | 4257 | |
b3fac117 | 4258 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4259 | if (htab == NULL) |
4260 | return FALSE; | |
4261 | ||
b31867b6 | 4262 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4263 | if (fdh == NULL |
4264 | && !bfd_link_relocatable (info) | |
4265 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4266 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4267 | && eh->elf.ref_regular) | |
4268 | { | |
4269 | /* Make an undefined function descriptor sym, in order to | |
4270 | pull in an --as-needed shared lib. Archives are handled | |
4271 | elsewhere. */ | |
4272 | fdh = make_fdh (info, eh); | |
4273 | if (fdh == NULL) | |
4274 | return FALSE; | |
bb700d78 | 4275 | } |
8c5b4e52 AM |
4276 | |
4277 | if (fdh != NULL) | |
8387904d | 4278 | { |
35b0ce59 AM |
4279 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4280 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4281 | |
4282 | /* Make both descriptor and entry symbol have the most | |
4283 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4284 | if (entry_vis < descr_vis) |
4285 | fdh->elf.other += entry_vis - descr_vis; | |
4286 | else if (entry_vis > descr_vis) | |
4287 | eh->elf.other += descr_vis - entry_vis; | |
4288 | ||
8c5b4e52 AM |
4289 | /* Propagate reference flags from entry symbol to function |
4290 | descriptor symbol. */ | |
bc4e12de | 4291 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4292 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4293 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4294 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4295 | ||
4296 | if (!fdh->elf.forced_local | |
4297 | && fdh->elf.dynindx == -1 | |
4298 | && fdh->elf.versioned != versioned_hidden | |
4299 | && (bfd_link_dll (info) | |
4300 | || fdh->elf.def_dynamic | |
4301 | || fdh->elf.ref_dynamic) | |
4302 | && (eh->elf.ref_regular | |
4303 | || eh->elf.def_regular)) | |
4304 | { | |
2cdcc330 | 4305 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4306 | return FALSE; |
35b0ce59 | 4307 | } |
8387904d | 4308 | } |
99877b66 | 4309 | |
8387904d AM |
4310 | return TRUE; |
4311 | } | |
4312 | ||
f6c7c3e8 AM |
4313 | /* Set up opd section info and abiversion for IBFD, and process list |
4314 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4315 | |
8387904d | 4316 | static bfd_boolean |
f6c7c3e8 | 4317 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4318 | { |
99877b66 | 4319 | struct ppc_link_hash_table *htab; |
b3fac117 | 4320 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4321 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4322 | |
459609d6 | 4323 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4324 | { |
b9399fcf AM |
4325 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4326 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4327 | ||
459609d6 AM |
4328 | if (abiversion (ibfd) == 0) |
4329 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4330 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4331 | { |
695344c0 | 4332 | /* xgettext:c-format */ |
cf97bcb0 AM |
4333 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4334 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4335 | bfd_set_error (bfd_error_bad_value); |
4336 | return FALSE; | |
f6c7c3e8 | 4337 | } |
b9399fcf | 4338 | } |
f6c7c3e8 | 4339 | |
b9399fcf AM |
4340 | if (is_ppc64_elf (info->output_bfd)) |
4341 | { | |
4342 | /* For input files without an explicit abiversion in e_flags | |
4343 | we should have flagged any with symbol st_other bits set | |
4344 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4345 | Set the output abiversion if not yet set, and for any input | |
4346 | still ambiguous, take its abiversion from the output. | |
4347 | Differences in ABI are reported later. */ | |
4348 | if (abiversion (info->output_bfd) == 0) | |
4349 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4350 | else if (abiversion (ibfd) == 0) | |
4351 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4352 | } |
4353 | ||
459609d6 AM |
4354 | htab = ppc_hash_table (info); |
4355 | if (htab == NULL) | |
b9399fcf | 4356 | return TRUE; |
459609d6 | 4357 | |
b9399fcf AM |
4358 | if (opd != NULL && opd->size != 0 |
4359 | && (ibfd->flags & DYNAMIC) == 0 | |
4360 | && (opd->flags & SEC_RELOC) != 0 | |
4361 | && opd->reloc_count != 0 | |
4362 | && !bfd_is_abs_section (opd->output_section) | |
4363 | && info->gc_sections) | |
4364 | { | |
4365 | /* Garbage collection needs some extra help with .opd sections. | |
4366 | We don't want to necessarily keep everything referenced by | |
4367 | relocs in .opd, as that would keep all functions. Instead, | |
4368 | if we reference an .opd symbol (a function descriptor), we | |
4369 | want to keep the function code symbol's section. This is | |
4370 | easy for global symbols, but for local syms we need to keep | |
4371 | information about the associated function section. */ | |
4372 | bfd_size_type amt; | |
4373 | asection **opd_sym_map; | |
4374 | Elf_Internal_Shdr *symtab_hdr; | |
4375 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4376 | ||
4377 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4378 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4379 | if (opd_sym_map == NULL) | |
4380 | return FALSE; | |
4381 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4382 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4383 | info->keep_memory); | |
4384 | if (relocs == NULL) | |
4385 | return FALSE; | |
4386 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4387 | rel_end = relocs + opd->reloc_count - 1; | |
4388 | for (rel = relocs; rel < rel_end; rel++) | |
4389 | { | |
4390 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4391 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4392 | ||
4393 | if (r_type == R_PPC64_ADDR64 | |
4394 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4395 | && r_symndx < symtab_hdr->sh_info) | |
4396 | { | |
4397 | Elf_Internal_Sym *isym; | |
4398 | asection *s; | |
4399 | ||
f1dfbfdb L |
4400 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, |
4401 | r_symndx); | |
b9399fcf AM |
4402 | if (isym == NULL) |
4403 | { | |
4404 | if (elf_section_data (opd)->relocs != relocs) | |
4405 | free (relocs); | |
4406 | return FALSE; | |
4407 | } | |
4408 | ||
4409 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4410 | if (s != NULL && s != opd) | |
4411 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4412 | } | |
4413 | } | |
4414 | if (elf_section_data (opd)->relocs != relocs) | |
4415 | free (relocs); | |
4416 | } | |
459609d6 AM |
4417 | |
4418 | p = &htab->dot_syms; | |
4419 | while ((eh = *p) != NULL) | |
4420 | { | |
4421 | *p = NULL; | |
4422 | if (&eh->elf == htab->elf.hgot) | |
4423 | ; | |
4424 | else if (htab->elf.hgot == NULL | |
4425 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4426 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4427 | else if (abiversion (ibfd) <= 1) |
4428 | { | |
4429 | htab->need_func_desc_adj = 1; | |
4430 | if (!add_symbol_adjust (eh, info)) | |
4431 | return FALSE; | |
4432 | } | |
459609d6 AM |
4433 | p = &eh->u.next_dot_sym; |
4434 | } | |
b3fac117 | 4435 | return TRUE; |
8387904d AM |
4436 | } |
4437 | ||
97fed1c9 JJ |
4438 | /* Undo hash table changes when an --as-needed input file is determined |
4439 | not to be needed. */ | |
4440 | ||
4441 | static bfd_boolean | |
e5034e59 AM |
4442 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4443 | struct bfd_link_info *info, | |
4444 | enum notice_asneeded_action act) | |
97fed1c9 | 4445 | { |
e5034e59 AM |
4446 | if (act == notice_not_needed) |
4447 | { | |
4448 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4449 | |
e5034e59 AM |
4450 | if (htab == NULL) |
4451 | return FALSE; | |
4dfe6ac6 | 4452 | |
e5034e59 AM |
4453 | htab->dot_syms = NULL; |
4454 | } | |
4455 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4456 | } |
4457 | ||
aa374f67 AM |
4458 | /* If --just-symbols against a final linked binary, then assume we need |
4459 | toc adjusting stubs when calling functions defined there. */ | |
4460 | ||
4461 | static void | |
4462 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4463 | { | |
4464 | if ((sec->flags & SEC_CODE) != 0 | |
4465 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4466 | && is_ppc64_elf (sec->owner)) | |
4467 | { | |
2c3f079f AM |
4468 | if (abiversion (sec->owner) >= 2 |
4469 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4470 | sec->has_toc_reloc = 1; |
4471 | } | |
4472 | _bfd_elf_link_just_syms (sec, info); | |
4473 | } | |
4474 | ||
e054468f | 4475 | static struct plt_entry ** |
4ce794b7 AM |
4476 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4477 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4478 | { |
4479 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4480 | struct plt_entry **local_plt; |
f961d9dd | 4481 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4482 | |
4483 | if (local_got_ents == NULL) | |
4484 | { | |
4485 | bfd_size_type size = symtab_hdr->sh_info; | |
4486 | ||
e054468f AM |
4487 | size *= (sizeof (*local_got_ents) |
4488 | + sizeof (*local_plt) | |
4489 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4490 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4491 | if (local_got_ents == NULL) |
e054468f | 4492 | return NULL; |
411e1bfb AM |
4493 | elf_local_got_ents (abfd) = local_got_ents; |
4494 | } | |
4495 | ||
37da22e5 | 4496 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4497 | { |
4498 | struct got_entry *ent; | |
4499 | ||
4500 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4501 | if (ent->addend == r_addend |
4502 | && ent->owner == abfd | |
4503 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4504 | break; |
4505 | if (ent == NULL) | |
4506 | { | |
986f0783 | 4507 | size_t amt = sizeof (*ent); |
4ce794b7 | 4508 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4509 | if (ent == NULL) |
4510 | return FALSE; | |
4511 | ent->next = local_got_ents[r_symndx]; | |
4512 | ent->addend = r_addend; | |
e717da7e | 4513 | ent->owner = abfd; |
411e1bfb | 4514 | ent->tls_type = tls_type; |
927be08e | 4515 | ent->is_indirect = FALSE; |
411e1bfb AM |
4516 | ent->got.refcount = 0; |
4517 | local_got_ents[r_symndx] = ent; | |
4518 | } | |
4519 | ent->got.refcount += 1; | |
4520 | } | |
4521 | ||
e054468f | 4522 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4523 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4524 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4525 | |
4526 | return local_plt + r_symndx; | |
65f38f15 AM |
4527 | } |
4528 | ||
411e1bfb | 4529 | static bfd_boolean |
e054468f | 4530 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4531 | { |
411e1bfb | 4532 | struct plt_entry *ent; |
1e2f5b6e | 4533 | |
e054468f | 4534 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4535 | if (ent->addend == addend) |
4536 | break; | |
4537 | if (ent == NULL) | |
1e2f5b6e | 4538 | { |
986f0783 | 4539 | size_t amt = sizeof (*ent); |
4ce794b7 | 4540 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4541 | if (ent == NULL) |
4542 | return FALSE; | |
e054468f | 4543 | ent->next = *plist; |
411e1bfb AM |
4544 | ent->addend = addend; |
4545 | ent->plt.refcount = 0; | |
e054468f | 4546 | *plist = ent; |
1e2f5b6e | 4547 | } |
411e1bfb | 4548 | ent->plt.refcount += 1; |
b34976b6 | 4549 | return TRUE; |
1e2f5b6e AM |
4550 | } |
4551 | ||
e054468f AM |
4552 | static bfd_boolean |
4553 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4554 | { | |
4555 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4556 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4557 | || r_type == R_PPC64_REL14 |
4558 | || r_type == R_PPC64_REL14_BRTAKEN | |
4559 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4560 | || r_type == R_PPC64_ADDR24 | |
4561 | || r_type == R_PPC64_ADDR14 | |
4562 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4563 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4564 | || r_type == R_PPC64_PLTCALL |
4565 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4566 | } |
4567 | ||
4568 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4569 | ||
4570 | static bfd_boolean | |
4571 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4572 | { | |
4573 | return (r_type == R_PPC64_PLT16_HA | |
4574 | || r_type == R_PPC64_PLT16_HI | |
4575 | || r_type == R_PPC64_PLT16_LO | |
4576 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4577 | || r_type == R_PPC64_PLT_PCREL34 |
4578 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4579 | || r_type == R_PPC64_PLTSEQ | |
4580 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4581 | } |
4582 | ||
5bd4f169 | 4583 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4584 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4585 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4586 | |
b34976b6 | 4587 | static bfd_boolean |
4ce794b7 AM |
4588 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4589 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4590 | { |
65f38f15 | 4591 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4592 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4593 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4594 | const Elf_Internal_Rela *rel; |
4595 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4596 | asection *sreloc; |
3a71aa26 | 4597 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4598 | bfd_boolean is_opd; |
5bd4f169 | 4599 | |
0e1862bb | 4600 | if (bfd_link_relocatable (info)) |
b34976b6 | 4601 | return TRUE; |
5bd4f169 | 4602 | |
0c8d6e5c | 4603 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4604 | |
65f38f15 | 4605 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4606 | if (htab == NULL) |
4607 | return FALSE; | |
4608 | ||
3a71aa26 AM |
4609 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4610 | FALSE, FALSE, TRUE); | |
4611 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4612 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4613 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4614 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4615 | sreloc = NULL; |
b9399fcf | 4616 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4617 | rel_end = relocs + sec->reloc_count; |
4618 | for (rel = relocs; rel < rel_end; rel++) | |
4619 | { | |
4620 | unsigned long r_symndx; | |
4621 | struct elf_link_hash_entry *h; | |
04c9666a | 4622 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4623 | int tls_type; |
7c8fe5c4 | 4624 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4625 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4626 | |
4627 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4628 | if (r_symndx < symtab_hdr->sh_info) | |
4629 | h = NULL; | |
4630 | else | |
973a3492 L |
4631 | { |
4632 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4633 | h = elf_follow_link (h); |
1c865ab2 AM |
4634 | |
4635 | if (h == htab->elf.hgot) | |
4636 | sec->has_toc_reloc = 1; | |
973a3492 | 4637 | } |
5bd4f169 | 4638 | |
5663e321 AM |
4639 | r_type = ELF64_R_TYPE (rel->r_info); |
4640 | switch (r_type) | |
4641 | { | |
04bdff6a AM |
4642 | case R_PPC64_D34: |
4643 | case R_PPC64_D34_LO: | |
4644 | case R_PPC64_D34_HI30: | |
4645 | case R_PPC64_D34_HA30: | |
4646 | case R_PPC64_D28: | |
c213164a AM |
4647 | case R_PPC64_TPREL34: |
4648 | case R_PPC64_DTPREL34: | |
04bdff6a | 4649 | case R_PPC64_PCREL34: |
5663e321 | 4650 | case R_PPC64_GOT_PCREL34: |
87c69f97 AM |
4651 | case R_PPC64_GOT_TLSGD_PCREL34: |
4652 | case R_PPC64_GOT_TLSLD_PCREL34: | |
4653 | case R_PPC64_GOT_TPREL_PCREL34: | |
4654 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
4655 | case R_PPC64_PLT_PCREL34: |
4656 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a | 4657 | case R_PPC64_PCREL28: |
e10a07b3 | 4658 | htab->has_power10_relocs = 1; |
133a1f60 AM |
4659 | break; |
4660 | default: | |
5663e321 AM |
4661 | break; |
4662 | } | |
903b777d AM |
4663 | |
4664 | switch (r_type) | |
4665 | { | |
4666 | case R_PPC64_PLT16_HA: | |
4667 | case R_PPC64_GOT_TLSLD16_HA: | |
4668 | case R_PPC64_GOT_TLSGD16_HA: | |
4669 | case R_PPC64_GOT_TPREL16_HA: | |
4670 | case R_PPC64_GOT_DTPREL16_HA: | |
4671 | case R_PPC64_GOT16_HA: | |
4672 | case R_PPC64_TOC16_HA: | |
4673 | case R_PPC64_PLT16_LO: | |
4674 | case R_PPC64_PLT16_LO_DS: | |
4675 | case R_PPC64_GOT_TLSLD16_LO: | |
4676 | case R_PPC64_GOT_TLSGD16_LO: | |
4677 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4678 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4679 | case R_PPC64_GOT16_LO: | |
4680 | case R_PPC64_GOT16_LO_DS: | |
4681 | case R_PPC64_TOC16_LO: | |
4682 | case R_PPC64_TOC16_LO_DS: | |
4683 | case R_PPC64_GOT_PCREL34: | |
4684 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4685 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4686 | break; | |
4687 | default: | |
4688 | break; | |
4689 | } | |
4690 | ||
f749f26e | 4691 | ifunc = NULL; |
25f23106 AM |
4692 | if (h != NULL) |
4693 | { | |
4694 | if (h->type == STT_GNU_IFUNC) | |
4695 | { | |
4696 | h->needs_plt = 1; | |
4697 | ifunc = &h->plt.plist; | |
4698 | } | |
4699 | } | |
4700 | else | |
4701 | { | |
f1dfbfdb | 4702 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
25f23106 AM |
4703 | abfd, r_symndx); |
4704 | if (isym == NULL) | |
4705 | return FALSE; | |
4706 | ||
4707 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4708 | { | |
4709 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4710 | rel->r_addend, |
37da22e5 | 4711 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4712 | if (ifunc == NULL) |
4713 | return FALSE; | |
4714 | } | |
4715 | } | |
727fc41e | 4716 | |
f749f26e | 4717 | tls_type = 0; |
a33d1f77 | 4718 | switch (r_type) |
5bd4f169 | 4719 | { |
727fc41e AM |
4720 | case R_PPC64_TLSGD: |
4721 | case R_PPC64_TLSLD: | |
4722 | /* These special tls relocs tie a call to __tls_get_addr with | |
4723 | its parameter symbol. */ | |
37da22e5 | 4724 | if (h != NULL) |
ed7007c1 | 4725 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; |
37da22e5 AM |
4726 | else |
4727 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4728 | rel->r_addend, |
37da22e5 AM |
4729 | NON_GOT | TLS_TLS | TLS_MARK)) |
4730 | return FALSE; | |
4731 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4732 | break; |
4733 | ||
411e1bfb AM |
4734 | case R_PPC64_GOT_TLSLD16: |
4735 | case R_PPC64_GOT_TLSLD16_LO: | |
4736 | case R_PPC64_GOT_TLSLD16_HI: | |
4737 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 4738 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 4739 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4740 | goto dogottls; |
4741 | ||
4742 | case R_PPC64_GOT_TLSGD16: | |
4743 | case R_PPC64_GOT_TLSGD16_LO: | |
4744 | case R_PPC64_GOT_TLSGD16_HI: | |
4745 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 4746 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 4747 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4748 | goto dogottls; |
4749 | ||
4750 | case R_PPC64_GOT_TPREL16_DS: | |
4751 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4752 | case R_PPC64_GOT_TPREL16_HI: | |
4753 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 4754 | case R_PPC64_GOT_TPREL_PCREL34: |
7c8bbca5 | 4755 | if (bfd_link_dll (info)) |
411e1bfb AM |
4756 | info->flags |= DF_STATIC_TLS; |
4757 | tls_type = TLS_TLS | TLS_TPREL; | |
4758 | goto dogottls; | |
4759 | ||
4760 | case R_PPC64_GOT_DTPREL16_DS: | |
4761 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4762 | case R_PPC64_GOT_DTPREL16_HI: | |
4763 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 4764 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
4765 | tls_type = TLS_TLS | TLS_DTPREL; |
4766 | dogottls: | |
4767 | sec->has_tls_reloc = 1; | |
066f4018 | 4768 | goto dogot; |
411e1bfb | 4769 | |
903b777d AM |
4770 | case R_PPC64_GOT16: |
4771 | case R_PPC64_GOT16_LO: | |
4772 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4773 | case R_PPC64_GOT16_HA: |
903b777d | 4774 | case R_PPC64_GOT16_DS: |
066f4018 | 4775 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4776 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4777 | dogot: |
65f38f15 | 4778 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4779 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4780 | if (r_type == R_PPC64_GOT_TLSLD16 |
4781 | || r_type == R_PPC64_GOT_TLSGD16 | |
4782 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4783 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4784 | || r_type == R_PPC64_GOT16 | |
4785 | || r_type == R_PPC64_GOT16_DS) | |
4786 | { | |
4787 | htab->do_multi_toc = 1; | |
d77c8a4b | 4788 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4789 | } |
4790 | ||
e717da7e AM |
4791 | if (ppc64_elf_tdata (abfd)->got == NULL |
4792 | && !create_got_section (abfd, info)) | |
b34976b6 | 4793 | return FALSE; |
5bd4f169 AM |
4794 | |
4795 | if (h != NULL) | |
4796 | { | |
411e1bfb AM |
4797 | struct ppc_link_hash_entry *eh; |
4798 | struct got_entry *ent; | |
65f38f15 | 4799 | |
ed7007c1 | 4800 | eh = ppc_elf_hash_entry (h); |
411e1bfb | 4801 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) |
133a1f60 | 4802 | if (ent->addend == rel->r_addend |
e717da7e | 4803 | && ent->owner == abfd |
411e1bfb AM |
4804 | && ent->tls_type == tls_type) |
4805 | break; | |
4806 | if (ent == NULL) | |
5bd4f169 | 4807 | { |
986f0783 | 4808 | size_t amt = sizeof (*ent); |
4ce794b7 | 4809 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4810 | if (ent == NULL) |
b34976b6 | 4811 | return FALSE; |
411e1bfb | 4812 | ent->next = eh->elf.got.glist; |
133a1f60 | 4813 | ent->addend = rel->r_addend; |
e717da7e | 4814 | ent->owner = abfd; |
411e1bfb | 4815 | ent->tls_type = tls_type; |
927be08e | 4816 | ent->is_indirect = FALSE; |
411e1bfb AM |
4817 | ent->got.refcount = 0; |
4818 | eh->elf.got.glist = ent; | |
5bd4f169 | 4819 | } |
411e1bfb | 4820 | ent->got.refcount += 1; |
e7b938ca | 4821 | eh->tls_mask |= tls_type; |
5bd4f169 | 4822 | } |
411e1bfb AM |
4823 | else |
4824 | /* This is a global offset table entry for a local symbol. */ | |
4825 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4826 | rel->r_addend, tls_type)) |
411e1bfb | 4827 | return FALSE; |
5bd4f169 AM |
4828 | break; |
4829 | ||
5bd4f169 | 4830 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4831 | case R_PPC64_PLT16_HI: |
4832 | case R_PPC64_PLT16_LO: | |
08be3224 | 4833 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4834 | case R_PPC64_PLT_PCREL34: |
4835 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4836 | case R_PPC64_PLT32: |
4837 | case R_PPC64_PLT64: | |
cbf95972 AM |
4838 | /* This symbol requires a procedure linkage table entry. */ |
4839 | plt_list = ifunc; | |
4840 | if (h != NULL) | |
e054468f | 4841 | { |
e054468f AM |
4842 | h->needs_plt = 1; |
4843 | if (h->root.root.string[0] == '.' | |
4844 | && h->root.root.string[1] != '\0') | |
ed7007c1 AM |
4845 | ppc_elf_hash_entry (h)->is_func = 1; |
4846 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
cbf95972 AM |
4847 | plt_list = &h->plt.plist; |
4848 | } | |
4849 | if (plt_list == NULL) | |
2d7ad24e | 4850 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 4851 | rel->r_addend, |
2d7ad24e | 4852 | NON_GOT | PLT_KEEP); |
133a1f60 | 4853 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4854 | return FALSE; |
5bd4f169 AM |
4855 | break; |
4856 | ||
4857 | /* The following relocations don't need to propagate the | |
4858 | relocation if linking a shared object since they are | |
4859 | section relative. */ | |
4860 | case R_PPC64_SECTOFF: | |
4861 | case R_PPC64_SECTOFF_LO: | |
4862 | case R_PPC64_SECTOFF_HI: | |
4863 | case R_PPC64_SECTOFF_HA: | |
4864 | case R_PPC64_SECTOFF_DS: | |
4865 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4866 | case R_PPC64_DTPREL16: |
4867 | case R_PPC64_DTPREL16_LO: | |
4868 | case R_PPC64_DTPREL16_HI: | |
4869 | case R_PPC64_DTPREL16_HA: | |
4870 | case R_PPC64_DTPREL16_DS: | |
4871 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4872 | case R_PPC64_DTPREL16_HIGH: |
4873 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4874 | case R_PPC64_DTPREL16_HIGHER: |
4875 | case R_PPC64_DTPREL16_HIGHERA: | |
4876 | case R_PPC64_DTPREL16_HIGHEST: | |
4877 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4878 | break; |
4879 | ||
ad8e1ba5 | 4880 | /* Nor do these. */ |
25f23106 AM |
4881 | case R_PPC64_REL16: |
4882 | case R_PPC64_REL16_LO: | |
4883 | case R_PPC64_REL16_HI: | |
4884 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4885 | case R_PPC64_REL16_HIGH: |
4886 | case R_PPC64_REL16_HIGHA: | |
4887 | case R_PPC64_REL16_HIGHER: | |
4888 | case R_PPC64_REL16_HIGHERA: | |
4889 | case R_PPC64_REL16_HIGHEST: | |
4890 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4891 | case R_PPC64_REL16_HIGHER34: |
4892 | case R_PPC64_REL16_HIGHERA34: | |
4893 | case R_PPC64_REL16_HIGHEST34: | |
4894 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4895 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4896 | break; |
4897 | ||
45965137 AM |
4898 | /* Not supported as a dynamic relocation. */ |
4899 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4900 | if (bfd_link_pic (info)) |
45965137 AM |
4901 | { |
4902 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4903 | ppc_howto_init (); | |
695344c0 | 4904 | /* xgettext:c-format */ |
174d0a74 | 4905 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4906 | "in shared libraries and PIEs\n"), |
45965137 AM |
4907 | abfd, sec, rel->r_offset, |
4908 | ppc64_elf_howto_table[r_type]->name); | |
4909 | bfd_set_error (bfd_error_bad_value); | |
4910 | return FALSE; | |
4911 | } | |
4912 | break; | |
4913 | ||
ad8e1ba5 | 4914 | case R_PPC64_TOC16: |
33c0ec9d AM |
4915 | case R_PPC64_TOC16_DS: |
4916 | htab->do_multi_toc = 1; | |
d77c8a4b | 4917 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4918 | /* Fall through. */ |
ad8e1ba5 AM |
4919 | case R_PPC64_TOC16_LO: |
4920 | case R_PPC64_TOC16_HI: | |
4921 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4922 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4923 | sec->has_toc_reloc = 1; |
ec73ddcd | 4924 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
4925 | { |
4926 | /* We may need a copy reloc. */ | |
4927 | h->non_got_ref = 1; | |
4928 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
4929 | glibc ld.so as of 2019-08 will error out if one of | |
4930 | these relocations is emitted. */ | |
4931 | h->needs_copy = 1; | |
4932 | goto dodyn; | |
4933 | } | |
ad8e1ba5 AM |
4934 | break; |
4935 | ||
006589cf AM |
4936 | /* Marker reloc. */ |
4937 | case R_PPC64_ENTRY: | |
4938 | break; | |
4939 | ||
5bd4f169 AM |
4940 | /* This relocation describes the C++ object vtable hierarchy. |
4941 | Reconstruct it for later use during GC. */ | |
4942 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4943 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4944 | return FALSE; |
5bd4f169 AM |
4945 | break; |
4946 | ||
4947 | /* This relocation describes which C++ vtable entries are actually | |
4948 | used. Record for later use during GC. */ | |
4949 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4950 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4951 | return FALSE; |
5bd4f169 AM |
4952 | break; |
4953 | ||
721956f4 AM |
4954 | case R_PPC64_REL14: |
4955 | case R_PPC64_REL14_BRTAKEN: | |
4956 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4957 | { |
4958 | asection *dest = NULL; | |
4959 | ||
4960 | /* Heuristic: If jumping outside our section, chances are | |
4961 | we are going to need a stub. */ | |
4962 | if (h != NULL) | |
4963 | { | |
4964 | /* If the sym is weak it may be overridden later, so | |
4965 | don't assume we know where a weak sym lives. */ | |
4966 | if (h->root.type == bfd_link_hash_defined) | |
4967 | dest = h->root.u.def.section; | |
4968 | } | |
4969 | else | |
87d72d41 AM |
4970 | { |
4971 | Elf_Internal_Sym *isym; | |
4972 | ||
f1dfbfdb | 4973 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
4974 | abfd, r_symndx); |
4975 | if (isym == NULL) | |
4976 | return FALSE; | |
4977 | ||
4978 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4979 | } | |
4980 | ||
220c76dd | 4981 | if (dest != sec) |
7c8fe5c4 | 4982 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4983 | } |
3e04d765 AM |
4984 | goto rel24; |
4985 | ||
4986 | case R_PPC64_PLTCALL: | |
5663e321 | 4987 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4988 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4989 | /* Fall through. */ |
4990 | ||
5d1634d7 | 4991 | case R_PPC64_REL24: |
05d0e962 | 4992 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4993 | rel24: |
cbf95972 AM |
4994 | plt_list = ifunc; |
4995 | if (h != NULL) | |
5d1634d7 | 4996 | { |
e054468f AM |
4997 | h->needs_plt = 1; |
4998 | if (h->root.root.string[0] == '.' | |
4999 | && h->root.root.string[1] != '\0') | |
ed7007c1 | 5000 | ppc_elf_hash_entry (h)->is_func = 1; |
cbf95972 | 5001 | |
3a71aa26 | 5002 | if (h == tga || h == dottga) |
cbf95972 AM |
5003 | { |
5004 | sec->has_tls_reloc = 1; | |
5005 | if (rel != relocs | |
5006 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5007 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5008 | /* We have a new-style __tls_get_addr call with | |
5009 | a marker reloc. */ | |
5010 | ; | |
5011 | else | |
5012 | /* Mark this section as having an old-style call. */ | |
9737e8af | 5013 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
5014 | } |
5015 | plt_list = &h->plt.plist; | |
411e1bfb | 5016 | } |
cbf95972 AM |
5017 | |
5018 | /* We may need a .plt entry if the function this reloc | |
5019 | refers to is in a shared lib. */ | |
5020 | if (plt_list | |
133a1f60 | 5021 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 5022 | return FALSE; |
411e1bfb AM |
5023 | break; |
5024 | ||
cbf95972 AM |
5025 | case R_PPC64_ADDR14: |
5026 | case R_PPC64_ADDR14_BRNTAKEN: | |
5027 | case R_PPC64_ADDR14_BRTAKEN: | |
5028 | case R_PPC64_ADDR24: | |
5029 | goto dodyn; | |
5030 | ||
411e1bfb AM |
5031 | case R_PPC64_TPREL64: |
5032 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5033 | if (bfd_link_dll (info)) |
411e1bfb AM |
5034 | info->flags |= DF_STATIC_TLS; |
5035 | goto dotlstoc; | |
5036 | ||
5037 | case R_PPC64_DTPMOD64: | |
5038 | if (rel + 1 < rel_end | |
5039 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5040 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5041 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5042 | else |
951fd09b | 5043 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5044 | goto dotlstoc; |
5045 | ||
5046 | case R_PPC64_DTPREL64: | |
5047 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5048 | if (rel != relocs | |
5049 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5050 | && rel[-1].r_offset == rel->r_offset - 8) | |
5051 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5052 | Don't mark with TLS_DTPREL. */ | |
5053 | goto dodyn; | |
5054 | ||
5055 | dotlstoc: | |
5056 | sec->has_tls_reloc = 1; | |
5057 | if (h != NULL) | |
ed7007c1 | 5058 | ppc_elf_hash_entry (h)->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
5059 | else |
5060 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5061 | rel->r_addend, tls_type)) |
411e1bfb AM |
5062 | return FALSE; |
5063 | ||
7c8fe5c4 AM |
5064 | ppc64_sec = ppc64_elf_section_data (sec); |
5065 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5066 | { |
3a71aa26 AM |
5067 | bfd_size_type amt; |
5068 | ||
e7b938ca | 5069 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5070 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5071 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5072 | if (ppc64_sec->u.toc.symndx == NULL) | |
5073 | return FALSE; | |
5074 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5075 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5076 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5077 | return FALSE; |
7c8fe5c4 AM |
5078 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5079 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5080 | } |
5081 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 5082 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5083 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5084 | |
5085 | /* Mark the second slot of a GD or LD entry. | |
5086 | -1 to indicate GD and -2 to indicate LD. */ | |
5087 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5088 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5089 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5090 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5091 | goto dodyn; |
5092 | ||
411e1bfb AM |
5093 | case R_PPC64_TPREL16_HI: |
5094 | case R_PPC64_TPREL16_HA: | |
f9c6b907 AM |
5095 | case R_PPC64_TPREL16_HIGH: |
5096 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5097 | case R_PPC64_TPREL16_HIGHER: |
5098 | case R_PPC64_TPREL16_HIGHERA: | |
5099 | case R_PPC64_TPREL16_HIGHEST: | |
5100 | case R_PPC64_TPREL16_HIGHESTA: | |
252dcdf4 AM |
5101 | sec->has_tls_reloc = 1; |
5102 | /* Fall through. */ | |
c213164a | 5103 | case R_PPC64_TPREL34: |
252dcdf4 AM |
5104 | case R_PPC64_TPREL16: |
5105 | case R_PPC64_TPREL16_DS: | |
5106 | case R_PPC64_TPREL16_LO: | |
5107 | case R_PPC64_TPREL16_LO_DS: | |
7c8bbca5 AM |
5108 | if (bfd_link_dll (info)) |
5109 | info->flags |= DF_STATIC_TLS; | |
5110 | goto dodyn; | |
5d1634d7 | 5111 | |
e86ce104 | 5112 | case R_PPC64_ADDR64: |
b9399fcf | 5113 | if (is_opd |
1e2f5b6e | 5114 | && rel + 1 < rel_end |
4ce794b7 | 5115 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5116 | { |
8387904d | 5117 | if (h != NULL) |
ed7007c1 | 5118 | ppc_elf_hash_entry (h)->is_func = 1; |
1e2f5b6e | 5119 | } |
e86ce104 AM |
5120 | /* Fall through. */ |
5121 | ||
65f38f15 AM |
5122 | case R_PPC64_ADDR16: |
5123 | case R_PPC64_ADDR16_DS: | |
5124 | case R_PPC64_ADDR16_HA: | |
5125 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5126 | case R_PPC64_ADDR16_HIGH: |
5127 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5128 | case R_PPC64_ADDR16_HIGHER: |
5129 | case R_PPC64_ADDR16_HIGHERA: | |
5130 | case R_PPC64_ADDR16_HIGHEST: | |
5131 | case R_PPC64_ADDR16_HIGHESTA: | |
5132 | case R_PPC64_ADDR16_LO: | |
5133 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5134 | case R_PPC64_D34: |
5135 | case R_PPC64_D34_LO: | |
5136 | case R_PPC64_D34_HI30: | |
5137 | case R_PPC64_D34_HA30: | |
5138 | case R_PPC64_ADDR16_HIGHER34: | |
5139 | case R_PPC64_ADDR16_HIGHERA34: | |
5140 | case R_PPC64_ADDR16_HIGHEST34: | |
5141 | case R_PPC64_ADDR16_HIGHESTA34: | |
5142 | case R_PPC64_D28: | |
0e1862bb | 5143 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5144 | && rel->r_addend == 0) |
5145 | { | |
5146 | /* We may need a .plt entry if this reloc refers to a | |
5147 | function in a shared lib. */ | |
5663e321 | 5148 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
5149 | return FALSE; |
5150 | h->pointer_equality_needed = 1; | |
5151 | } | |
5152 | /* Fall through. */ | |
5153 | ||
5154 | case R_PPC64_REL30: | |
5155 | case R_PPC64_REL32: | |
5156 | case R_PPC64_REL64: | |
65f38f15 | 5157 | case R_PPC64_ADDR32: |
65f38f15 AM |
5158 | case R_PPC64_UADDR16: |
5159 | case R_PPC64_UADDR32: | |
5160 | case R_PPC64_UADDR64: | |
5bd4f169 | 5161 | case R_PPC64_TOC: |
ec73ddcd | 5162 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5163 | /* We may need a copy reloc. */ |
f5385ebf | 5164 | h->non_got_ref = 1; |
81848ca0 | 5165 | |
41bd81ab | 5166 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5167 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5168 | break; |
e86ce104 | 5169 | |
65f38f15 AM |
5170 | /* If we are creating a shared library, and this is a reloc |
5171 | against a global symbol, or a non PC relative reloc | |
5172 | against a local symbol, then we need to copy the reloc | |
5173 | into the shared library. However, if we are linking with | |
5174 | -Bsymbolic, we do not need to copy a reloc against a | |
5175 | global symbol which is defined in an object we are | |
5176 | including in the link (i.e., DEF_REGULAR is set). At | |
5177 | this point we have not seen all the input files, so it is | |
5178 | possible that DEF_REGULAR is not set now but will be set | |
5179 | later (it is never cleared). In case of a weak definition, | |
5180 | DEF_REGULAR may be cleared later by a strong definition in | |
5181 | a shared library. We account for that possibility below by | |
f4656909 | 5182 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5183 | table entry. A similar situation occurs when creating |
5184 | shared libraries and symbol visibility changes render the | |
5185 | symbol local. | |
5186 | ||
5187 | If on the other hand, we are creating an executable, we | |
5188 | may need to keep relocations for symbols satisfied by a | |
5189 | dynamic library if we manage to avoid copy relocs for the | |
5190 | symbol. */ | |
411e1bfb | 5191 | dodyn: |
ec73ddcd AM |
5192 | if ((h != NULL |
5193 | && (h->root.type == bfd_link_hash_defweak | |
5194 | || !h->def_regular)) | |
5195 | || (h != NULL | |
5196 | && !bfd_link_executable (info) | |
5197 | && !SYMBOLIC_BIND (info, h)) | |
5198 | || (bfd_link_pic (info) | |
5199 | && must_be_dyn_reloc (info, r_type)) | |
0e1862bb | 5200 | || (!bfd_link_pic (info) |
25f23106 | 5201 | && ifunc != NULL)) |
5bd4f169 | 5202 | { |
65f38f15 AM |
5203 | /* We must copy these reloc types into the output file. |
5204 | Create a reloc section in dynobj and make room for | |
5205 | this reloc. */ | |
5bd4f169 AM |
5206 | if (sreloc == NULL) |
5207 | { | |
83bac4b0 NC |
5208 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5209 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5210 | |
5bd4f169 | 5211 | if (sreloc == NULL) |
83bac4b0 | 5212 | return FALSE; |
5bd4f169 AM |
5213 | } |
5214 | ||
65f38f15 AM |
5215 | /* If this is a global symbol, we count the number of |
5216 | relocations we need for this symbol. */ | |
5217 | if (h != NULL) | |
5218 | { | |
19e08130 AM |
5219 | struct elf_dyn_relocs *p; |
5220 | struct elf_dyn_relocs **head; | |
5221 | ||
190eb1dd | 5222 | head = &h->dyn_relocs; |
19e08130 AM |
5223 | p = *head; |
5224 | if (p == NULL || p->sec != sec) | |
5225 | { | |
5226 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5227 | if (p == NULL) | |
5228 | return FALSE; | |
5229 | p->next = *head; | |
5230 | *head = p; | |
5231 | p->sec = sec; | |
5232 | p->count = 0; | |
5233 | p->pc_count = 0; | |
5234 | } | |
5235 | p->count += 1; | |
5236 | if (!must_be_dyn_reloc (info, r_type)) | |
5237 | p->pc_count += 1; | |
65f38f15 AM |
5238 | } |
5239 | else | |
5240 | { | |
ec338859 AM |
5241 | /* Track dynamic relocs needed for local syms too. |
5242 | We really need local syms available to do this | |
5243 | easily. Oh well. */ | |
19e08130 AM |
5244 | struct ppc_dyn_relocs *p; |
5245 | struct ppc_dyn_relocs **head; | |
5246 | bfd_boolean is_ifunc; | |
ec338859 | 5247 | asection *s; |
6edfbbad | 5248 | void *vpp; |
87d72d41 | 5249 | Elf_Internal_Sym *isym; |
6edfbbad | 5250 | |
f1dfbfdb | 5251 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
5252 | abfd, r_symndx); |
5253 | if (isym == NULL) | |
b34976b6 | 5254 | return FALSE; |
ec338859 | 5255 | |
87d72d41 AM |
5256 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5257 | if (s == NULL) | |
5258 | s = sec; | |
5259 | ||
6edfbbad | 5260 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5261 | head = (struct ppc_dyn_relocs **) vpp; |
5262 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5263 | p = *head; | |
5264 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5265 | p = p->next; | |
5266 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5267 | { | |
5268 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5269 | if (p == NULL) | |
5270 | return FALSE; | |
5271 | p->next = *head; | |
5272 | *head = p; | |
5273 | p->sec = sec; | |
5274 | p->ifunc = is_ifunc; | |
5275 | p->count = 0; | |
5276 | } | |
5277 | p->count += 1; | |
ec338859 | 5278 | } |
65f38f15 | 5279 | } |
5bd4f169 | 5280 | break; |
65f38f15 AM |
5281 | |
5282 | default: | |
96e0dda4 | 5283 | break; |
5bd4f169 AM |
5284 | } |
5285 | } | |
5286 | ||
b34976b6 | 5287 | return TRUE; |
5bd4f169 AM |
5288 | } |
5289 | ||
ee67d69a AM |
5290 | /* Merge backend specific data from an object file to the output |
5291 | object file when linking. */ | |
5292 | ||
5293 | static bfd_boolean | |
50e03d47 | 5294 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5295 | { |
50e03d47 | 5296 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5297 | unsigned long iflags, oflags; |
5298 | ||
5299 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5300 | return TRUE; | |
5301 | ||
5302 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5303 | return TRUE; | |
5304 | ||
50e03d47 | 5305 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5306 | return FALSE; |
5307 | ||
5308 | iflags = elf_elfheader (ibfd)->e_flags; | |
5309 | oflags = elf_elfheader (obfd)->e_flags; | |
5310 | ||
f6c7c3e8 | 5311 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5312 | { |
4eca0228 | 5313 | _bfd_error_handler |
695344c0 | 5314 | /* xgettext:c-format */ |
871b3ab2 | 5315 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5316 | bfd_set_error (bfd_error_bad_value); |
5317 | return FALSE; | |
5318 | } | |
f6c7c3e8 | 5319 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5320 | { |
4eca0228 | 5321 | _bfd_error_handler |
695344c0 | 5322 | /* xgettext:c-format */ |
871b3ab2 | 5323 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5324 | ibfd, iflags, oflags); |
5325 | bfd_set_error (bfd_error_bad_value); | |
5326 | return FALSE; | |
5327 | } | |
5328 | ||
4a91d0ba AM |
5329 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5330 | return FALSE; | |
005d79fd | 5331 | |
ee67d69a | 5332 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5333 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5334 | } |
5335 | ||
5336 | static bfd_boolean | |
5337 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5338 | { | |
5339 | /* Print normal ELF private data. */ | |
5340 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5341 | ||
5342 | if (elf_elfheader (abfd)->e_flags != 0) | |
5343 | { | |
5344 | FILE *file = ptr; | |
5345 | ||
ee67d69a AM |
5346 | fprintf (file, _("private flags = 0x%lx:"), |
5347 | elf_elfheader (abfd)->e_flags); | |
5348 | ||
5349 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5350 | fprintf (file, _(" [abiv%ld]"), | |
5351 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5352 | fputc ('\n', file); | |
5353 | } | |
5354 | ||
5355 | return TRUE; | |
5356 | } | |
5357 | ||
8387904d | 5358 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5359 | of the code entry point, and its section, which must be in the same |
5360 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5361 | |
5362 | static bfd_vma | |
5363 | opd_entry_value (asection *opd_sec, | |
5364 | bfd_vma offset, | |
5365 | asection **code_sec, | |
aef36ac1 AM |
5366 | bfd_vma *code_off, |
5367 | bfd_boolean in_code_sec) | |
8387904d AM |
5368 | { |
5369 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5370 | Elf_Internal_Rela *relocs; |
8387904d | 5371 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5372 | bfd_vma val; |
8387904d | 5373 | |
9f296da3 AM |
5374 | /* No relocs implies we are linking a --just-symbols object, or looking |
5375 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5376 | if (opd_sec->reloc_count == 0) |
5377 | { | |
729eabd5 | 5378 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5379 | |
729eabd5 AM |
5380 | if (contents == NULL) |
5381 | { | |
5382 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5383 | return (bfd_vma) -1; | |
5384 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5385 | } | |
ee1e4ede | 5386 | |
dbb3fbbb | 5387 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5388 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5389 | return (bfd_vma) -1; |
5390 | ||
729eabd5 | 5391 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5392 | if (code_sec != NULL) |
5393 | { | |
5394 | asection *sec, *likely = NULL; | |
ee1e4ede | 5395 | |
aef36ac1 | 5396 | if (in_code_sec) |
4b85d634 | 5397 | { |
aef36ac1 AM |
5398 | sec = *code_sec; |
5399 | if (sec->vma <= val | |
5400 | && val < sec->vma + sec->size) | |
5401 | likely = sec; | |
5402 | else | |
5403 | val = -1; | |
5404 | } | |
5405 | else | |
5406 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5407 | if (sec->vma <= val | |
5408 | && (sec->flags & SEC_LOAD) != 0 | |
5409 | && (sec->flags & SEC_ALLOC) != 0) | |
5410 | likely = sec; | |
5411 | if (likely != NULL) | |
5412 | { | |
5413 | *code_sec = likely; | |
5414 | if (code_off != NULL) | |
5415 | *code_off = val - likely->vma; | |
4b85d634 AM |
5416 | } |
5417 | } | |
aef36ac1 | 5418 | return val; |
4b85d634 AM |
5419 | } |
5420 | ||
0c8d6e5c | 5421 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5422 | |
729eabd5 | 5423 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5424 | if (relocs == NULL) |
5425 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5426 | /* PR 17512: file: df8e1fd6. */ |
5427 | if (relocs == NULL) | |
5428 | return (bfd_vma) -1; | |
645ea6a9 | 5429 | |
8387904d | 5430 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5431 | lo = relocs; |
8387904d | 5432 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5433 | val = (bfd_vma) -1; |
8387904d AM |
5434 | while (lo < hi) |
5435 | { | |
5436 | look = lo + (hi - lo) / 2; | |
5437 | if (look->r_offset < offset) | |
5438 | lo = look + 1; | |
5439 | else if (look->r_offset > offset) | |
5440 | hi = look; | |
5441 | else | |
5442 | { | |
0ffa91dd NC |
5443 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5444 | ||
8387904d AM |
5445 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5446 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5447 | { | |
5448 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5449 | asection *sec = NULL; |
8387904d | 5450 | |
b53dfeb2 AM |
5451 | if (symndx >= symtab_hdr->sh_info |
5452 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5453 | { |
5454 | struct elf_link_hash_entry **sym_hashes; | |
5455 | struct elf_link_hash_entry *rh; | |
5456 | ||
5457 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5458 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5459 | if (rh != NULL) |
5460 | { | |
5461 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5462 | if (rh->root.type != bfd_link_hash_defined |
5463 | && rh->root.type != bfd_link_hash_defweak) | |
5464 | break; | |
5465 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5466 | { |
bb854a36 AM |
5467 | val = rh->root.u.def.value; |
5468 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5469 | } |
5470 | } | |
5471 | } | |
5472 | ||
5473 | if (sec == NULL) | |
5474 | { | |
5475 | Elf_Internal_Sym *sym; | |
5476 | ||
5477 | if (symndx < symtab_hdr->sh_info) | |
5478 | { | |
5479 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5480 | if (sym == NULL) | |
5481 | { | |
5482 | size_t symcnt = symtab_hdr->sh_info; | |
5483 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5484 | symcnt, 0, | |
5485 | NULL, NULL, NULL); | |
5486 | if (sym == NULL) | |
5487 | break; | |
5488 | symtab_hdr->contents = (bfd_byte *) sym; | |
5489 | } | |
5490 | sym += symndx; | |
128205bb AM |
5491 | } |
5492 | else | |
5493 | { | |
b53dfeb2 AM |
5494 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5495 | 1, symndx, | |
5496 | NULL, NULL, NULL); | |
128205bb AM |
5497 | if (sym == NULL) |
5498 | break; | |
128205bb | 5499 | } |
b53dfeb2 AM |
5500 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5501 | if (sec == NULL) | |
5502 | break; | |
5503 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5504 | val = sym->st_value; | |
8387904d | 5505 | } |
b53dfeb2 | 5506 | |
8387904d AM |
5507 | val += look->r_addend; |
5508 | if (code_off != NULL) | |
5509 | *code_off = val; | |
5510 | if (code_sec != NULL) | |
aef36ac1 AM |
5511 | { |
5512 | if (in_code_sec && *code_sec != sec) | |
5513 | return -1; | |
5514 | else | |
5515 | *code_sec = sec; | |
5516 | } | |
b53dfeb2 | 5517 | if (sec->output_section != NULL) |
8387904d | 5518 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5519 | } |
5520 | break; | |
5521 | } | |
5522 | } | |
645ea6a9 | 5523 | |
645ea6a9 | 5524 | return val; |
8387904d AM |
5525 | } |
5526 | ||
aef36ac1 AM |
5527 | /* If the ELF symbol SYM might be a function in SEC, return the |
5528 | function size and set *CODE_OFF to the function's entry point, | |
5529 | otherwise return zero. */ | |
9f296da3 | 5530 | |
aef36ac1 AM |
5531 | static bfd_size_type |
5532 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5533 | bfd_vma *code_off) | |
9f296da3 | 5534 | { |
aef36ac1 AM |
5535 | bfd_size_type size; |
5536 | ||
5537 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5538 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5539 | return 0; | |
5540 | ||
5541 | size = 0; | |
5542 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5543 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5544 | ||
5545 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5546 | { |
b07bca4e AM |
5547 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5548 | bfd_vma symval = sym->value; | |
5549 | ||
5550 | if (opd != NULL | |
5551 | && opd->adjust != NULL | |
5552 | && elf_section_data (sym->section)->relocs != NULL) | |
5553 | { | |
5554 | /* opd_entry_value will use cached relocs that have been | |
5555 | adjusted, but with raw symbols. That means both local | |
5556 | and global symbols need adjusting. */ | |
5557 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5558 | if (adjust == -1) | |
5559 | return 0; | |
5560 | symval += adjust; | |
5561 | } | |
5562 | ||
5563 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5564 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5565 | return 0; | |
5566 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5567 | symbol. This size has nothing to do with the code size of the | |
5568 | function, which is what we're supposed to return, but the | |
5569 | code size isn't available without looking up the dot-sym. | |
5570 | However, doing that would be a waste of time particularly | |
5571 | since elf_find_function will look at the dot-sym anyway. | |
5572 | Now, elf_find_function will keep the largest size of any | |
5573 | function sym found at the code address of interest, so return | |
5574 | 1 here to avoid it incorrectly caching a larger function size | |
5575 | for a small function. This does mean we return the wrong | |
5576 | size for a new-ABI function of size 24, but all that does is | |
5577 | disable caching for such functions. */ | |
5578 | if (size == 24) | |
5579 | size = 1; | |
9f296da3 | 5580 | } |
aef36ac1 AM |
5581 | else |
5582 | { | |
5583 | if (sym->section != sec) | |
5584 | return 0; | |
5585 | *code_off = sym->value; | |
5586 | } | |
5587 | if (size == 0) | |
5588 | size = 1; | |
5589 | return size; | |
9f296da3 AM |
5590 | } |
5591 | ||
f378ab09 AM |
5592 | /* Return true if symbol is a strong function defined in an ELFv2 |
5593 | object with st_other localentry bits of zero, ie. its local entry | |
5594 | point coincides with its global entry point. */ | |
5595 | ||
5596 | static bfd_boolean | |
5597 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5598 | { | |
5599 | return (h != NULL | |
5600 | && h->type == STT_FUNC | |
5601 | && h->root.type == bfd_link_hash_defined | |
5602 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
ed7007c1 | 5603 | && !ppc_elf_hash_entry (h)->non_zero_localentry |
f378ab09 AM |
5604 | && is_ppc64_elf (h->root.u.def.section->owner) |
5605 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5606 | } | |
5607 | ||
854b41e7 AM |
5608 | /* Return true if symbol is defined in a regular object file. */ |
5609 | ||
5610 | static bfd_boolean | |
5611 | is_static_defined (struct elf_link_hash_entry *h) | |
5612 | { | |
5613 | return ((h->root.type == bfd_link_hash_defined | |
5614 | || h->root.type == bfd_link_hash_defweak) | |
5615 | && h->root.u.def.section != NULL | |
5616 | && h->root.u.def.section->output_section != NULL); | |
5617 | } | |
5618 | ||
b31867b6 AM |
5619 | /* If FDH is a function descriptor symbol, return the associated code |
5620 | entry symbol if it is defined. Return NULL otherwise. */ | |
5621 | ||
5622 | static struct ppc_link_hash_entry * | |
5623 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5624 | { | |
5625 | if (fdh->is_func_descriptor) | |
5626 | { | |
5627 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5628 | if (fh->elf.root.type == bfd_link_hash_defined | |
5629 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5630 | return fh; | |
5631 | } | |
5632 | return NULL; | |
5633 | } | |
5634 | ||
5635 | /* If FH is a function code entry symbol, return the associated | |
5636 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5637 | ||
5638 | static struct ppc_link_hash_entry * | |
5639 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5640 | { | |
5641 | if (fh->oh != NULL | |
5642 | && fh->oh->is_func_descriptor) | |
5643 | { | |
5644 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5645 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5646 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5647 | return fdh; | |
5648 | } | |
5649 | return NULL; | |
5650 | } | |
5651 | ||
ed7007c1 AM |
5652 | /* Given H is a symbol that satisfies is_static_defined, return the |
5653 | value in the output file. */ | |
5654 | ||
5655 | static bfd_vma | |
5656 | defined_sym_val (struct elf_link_hash_entry *h) | |
5657 | { | |
5658 | return (h->root.u.def.section->output_section->vma | |
5659 | + h->root.u.def.section->output_offset | |
5660 | + h->root.u.def.value); | |
5661 | } | |
5662 | ||
5663 | /* Return true if H matches __tls_get_addr or one of its variants. */ | |
5664 | ||
5665 | static bfd_boolean | |
5666 | is_tls_get_addr (struct elf_link_hash_entry *h, | |
5667 | struct ppc_link_hash_table *htab) | |
5668 | { | |
30845f11 AM |
5669 | return (h == elf_hash_entry (htab->tls_get_addr_fd) |
5670 | || h == elf_hash_entry (htab->tga_desc_fd) | |
5671 | || h == elf_hash_entry (htab->tls_get_addr) | |
5672 | || h == elf_hash_entry (htab->tga_desc)); | |
ed7007c1 AM |
5673 | } |
5674 | ||
8c5b4e52 AM |
5675 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5676 | ||
5677 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5678 | ||
5679 | static bfd_boolean | |
5680 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5681 | { | |
5682 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5683 | ||
5684 | if (htab != NULL && htab->need_func_desc_adj) | |
5685 | { | |
5686 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5687 | htab->need_func_desc_adj = 0; | |
5688 | } | |
5689 | return bfd_elf_gc_sections (abfd, info); | |
5690 | } | |
5691 | ||
74f0fb50 AM |
5692 | /* Mark all our entry sym sections, both opd and code section. */ |
5693 | ||
5694 | static void | |
5695 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5696 | { | |
5697 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5698 | struct bfd_sym_chain *sym; | |
5699 | ||
4dfe6ac6 NC |
5700 | if (htab == NULL) |
5701 | return; | |
5702 | ||
74f0fb50 AM |
5703 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5704 | { | |
b31867b6 | 5705 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5706 | asection *sec; |
5707 | ||
ed7007c1 AM |
5708 | eh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym->name, |
5709 | FALSE, FALSE, TRUE)); | |
74f0fb50 AM |
5710 | if (eh == NULL) |
5711 | continue; | |
5712 | if (eh->elf.root.type != bfd_link_hash_defined | |
5713 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5714 | continue; | |
5715 | ||
b31867b6 AM |
5716 | fh = defined_code_entry (eh); |
5717 | if (fh != NULL) | |
74f0fb50 | 5718 | { |
b31867b6 | 5719 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5720 | sec->flags |= SEC_KEEP; |
5721 | } | |
5722 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5723 | && opd_entry_value (eh->elf.root.u.def.section, | |
5724 | eh->elf.root.u.def.value, | |
aef36ac1 | 5725 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5726 | sec->flags |= SEC_KEEP; |
5727 | ||
5728 | sec = eh->elf.root.u.def.section; | |
5729 | sec->flags |= SEC_KEEP; | |
5730 | } | |
5731 | } | |
5732 | ||
64d03ab5 AM |
5733 | /* Mark sections containing dynamically referenced symbols. When |
5734 | building shared libraries, we must assume that any visible symbol is | |
5735 | referenced. */ | |
5736 | ||
5737 | static bfd_boolean | |
5738 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5739 | { | |
5740 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
ed7007c1 | 5741 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
b31867b6 | 5742 | struct ppc_link_hash_entry *fdh; |
b407645f | 5743 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5744 | |
64d03ab5 | 5745 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5746 | fdh = defined_func_desc (eh); |
5747 | if (fdh != NULL) | |
5748 | eh = fdh; | |
64d03ab5 AM |
5749 | |
5750 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5751 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5752 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5753 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5754 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5755 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5756 | && (!bfd_link_executable (info) |
e278ae05 | 5757 | || info->gc_keep_exported |
b407645f AM |
5758 | || info->export_dynamic |
5759 | || (eh->elf.dynamic | |
5760 | && d != NULL | |
2cdcc330 AM |
5761 | && (*d->match) (&d->head, NULL, |
5762 | eh->elf.root.root.string))) | |
e278ae05 | 5763 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5764 | || !bfd_hide_sym_by_version (info->version_info, |
5765 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5766 | { |
5767 | asection *code_sec; | |
b31867b6 | 5768 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5769 | |
5770 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5771 | ||
5772 | /* Function descriptor syms cause the associated | |
5773 | function code sym section to be marked. */ | |
b31867b6 AM |
5774 | fh = defined_code_entry (eh); |
5775 | if (fh != NULL) | |
5776 | { | |
5777 | code_sec = fh->elf.root.u.def.section; | |
5778 | code_sec->flags |= SEC_KEEP; | |
5779 | } | |
64d03ab5 AM |
5780 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5781 | && opd_entry_value (eh->elf.root.u.def.section, | |
5782 | eh->elf.root.u.def.value, | |
aef36ac1 | 5783 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5784 | code_sec->flags |= SEC_KEEP; |
5785 | } | |
5786 | ||
5787 | return TRUE; | |
5788 | } | |
5789 | ||
5bd4f169 AM |
5790 | /* Return the section that should be marked against GC for a given |
5791 | relocation. */ | |
5792 | ||
5793 | static asection * | |
4ce794b7 | 5794 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5795 | struct bfd_link_info *info, |
4ce794b7 AM |
5796 | Elf_Internal_Rela *rel, |
5797 | struct elf_link_hash_entry *h, | |
5798 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5799 | { |
ccfa59ea AM |
5800 | asection *rsec; |
5801 | ||
ccfa59ea AM |
5802 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5803 | function sections, as all functions are referenced in .opd. */ | |
5804 | rsec = NULL; | |
5805 | if (get_opd_info (sec) != NULL) | |
5806 | return rsec; | |
1e2f5b6e | 5807 | |
5bd4f169 AM |
5808 | if (h != NULL) |
5809 | { | |
04c9666a | 5810 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5811 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5812 | |
4ce794b7 | 5813 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5814 | switch (r_type) |
5bd4f169 AM |
5815 | { |
5816 | case R_PPC64_GNU_VTINHERIT: | |
5817 | case R_PPC64_GNU_VTENTRY: | |
5818 | break; | |
5819 | ||
5820 | default: | |
5821 | switch (h->root.type) | |
5822 | { | |
5823 | case bfd_link_hash_defined: | |
5824 | case bfd_link_hash_defweak: | |
ed7007c1 | 5825 | eh = ppc_elf_hash_entry (h); |
b31867b6 AM |
5826 | fdh = defined_func_desc (eh); |
5827 | if (fdh != NULL) | |
8c5b4e52 AM |
5828 | { |
5829 | /* -mcall-aixdesc code references the dot-symbol on | |
5830 | a call reloc. Mark the function descriptor too | |
5831 | against garbage collection. */ | |
5832 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5833 | if (fdh->elf.is_weakalias) |
5834 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5835 | eh = fdh; |
5836 | } | |
1e2f5b6e AM |
5837 | |
5838 | /* Function descriptor syms cause the associated | |
5839 | function code sym section to be marked. */ | |
b31867b6 AM |
5840 | fh = defined_code_entry (eh); |
5841 | if (fh != NULL) | |
ccfa59ea AM |
5842 | { |
5843 | /* They also mark their opd section. */ | |
74f0fb50 | 5844 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5845 | |
b31867b6 | 5846 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5847 | } |
8387904d AM |
5848 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5849 | && opd_entry_value (eh->elf.root.u.def.section, | |
5850 | eh->elf.root.u.def.value, | |
aef36ac1 | 5851 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5852 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5853 | else |
1e2f5b6e AM |
5854 | rsec = h->root.u.def.section; |
5855 | break; | |
5bd4f169 AM |
5856 | |
5857 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5858 | rsec = h->root.u.c.p->section; |
5859 | break; | |
5bd4f169 AM |
5860 | |
5861 | default: | |
fb34365b | 5862 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5863 | } |
5864 | } | |
5865 | } | |
5866 | else | |
5867 | { | |
74f0fb50 | 5868 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5869 | |
5870 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5871 | opd = get_opd_info (rsec); |
5872 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5873 | { |
74f0fb50 | 5874 | rsec->gc_mark = 1; |
ccfa59ea | 5875 | |
51aecdc5 | 5876 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5877 | } |
5bd4f169 AM |
5878 | } |
5879 | ||
1e2f5b6e | 5880 | return rsec; |
5bd4f169 AM |
5881 | } |
5882 | ||
deb0e272 AM |
5883 | /* The maximum size of .sfpr. */ |
5884 | #define SFPR_MAX (218*4) | |
5885 | ||
5886 | struct sfpr_def_parms | |
5887 | { | |
699733f6 AM |
5888 | const char name[12]; |
5889 | unsigned char lo, hi; | |
2cdcc330 AM |
5890 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5891 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5892 | }; |
5893 | ||
a4b6fadd AM |
5894 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5895 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5896 | instead. */ | |
deb0e272 | 5897 | |
4dfe6ac6 | 5898 | static bfd_boolean |
a4b6fadd AM |
5899 | sfpr_define (struct bfd_link_info *info, |
5900 | const struct sfpr_def_parms *parm, | |
5901 | asection *stub_sec) | |
deb0e272 AM |
5902 | { |
5903 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5904 | unsigned int i; | |
5905 | size_t len = strlen (parm->name); | |
5906 | bfd_boolean writing = FALSE; | |
699733f6 | 5907 | char sym[16]; |
deb0e272 | 5908 | |
4dfe6ac6 NC |
5909 | if (htab == NULL) |
5910 | return FALSE; | |
5911 | ||
deb0e272 AM |
5912 | memcpy (sym, parm->name, len); |
5913 | sym[len + 2] = 0; | |
5914 | ||
5915 | for (i = parm->lo; i <= parm->hi; i++) | |
5916 | { | |
a4b6fadd | 5917 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5918 | |
5919 | sym[len + 0] = i / 10 + '0'; | |
5920 | sym[len + 1] = i % 10 + '0'; | |
ed7007c1 AM |
5921 | h = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym, |
5922 | writing, TRUE, TRUE)); | |
a4b6fadd | 5923 | if (stub_sec != NULL) |
deb0e272 | 5924 | { |
a4b6fadd AM |
5925 | if (h != NULL |
5926 | && h->elf.root.type == bfd_link_hash_defined | |
5927 | && h->elf.root.u.def.section == htab->sfpr) | |
5928 | { | |
5929 | struct elf_link_hash_entry *s; | |
5930 | char buf[32]; | |
5931 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5932 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5933 | if (s == NULL) | |
5934 | return FALSE; | |
779f2ae7 | 5935 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
5936 | { |
5937 | s->root.type = bfd_link_hash_defined; | |
5938 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5939 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5940 | + h->elf.root.u.def.value); |
5941 | s->ref_regular = 1; | |
5942 | s->def_regular = 1; | |
5943 | s->ref_regular_nonweak = 1; | |
5944 | s->forced_local = 1; | |
5945 | s->non_elf = 0; | |
5946 | s->root.linker_def = 1; | |
5947 | } | |
5948 | } | |
5949 | continue; | |
5950 | } | |
5951 | if (h != NULL) | |
5952 | { | |
5953 | h->save_res = 1; | |
5954 | if (!h->elf.def_regular) | |
deb0e272 | 5955 | { |
a4b6fadd AM |
5956 | h->elf.root.type = bfd_link_hash_defined; |
5957 | h->elf.root.u.def.section = htab->sfpr; | |
5958 | h->elf.root.u.def.value = htab->sfpr->size; | |
5959 | h->elf.type = STT_FUNC; | |
5960 | h->elf.def_regular = 1; | |
b32547cd | 5961 | h->elf.non_elf = 0; |
a4b6fadd AM |
5962 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5963 | writing = TRUE; | |
deb0e272 | 5964 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5965 | { |
2cdcc330 AM |
5966 | htab->sfpr->contents |
5967 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5968 | if (htab->sfpr->contents == NULL) |
5969 | return FALSE; | |
5970 | } | |
deb0e272 AM |
5971 | } |
5972 | } | |
5973 | if (writing) | |
5974 | { | |
5975 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5976 | if (i != parm->hi) | |
5977 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5978 | else | |
5979 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5980 | htab->sfpr->size = p - htab->sfpr->contents; | |
5981 | } | |
5982 | } | |
5983 | ||
5984 | return TRUE; | |
5985 | } | |
5986 | ||
5987 | static bfd_byte * | |
5988 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5989 | { | |
5990 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5991 | return p + 4; | |
5992 | } | |
5993 | ||
5994 | static bfd_byte * | |
5995 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5996 | { | |
5997 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5998 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5999 | p = p + 4; |
6000 | bfd_put_32 (abfd, BLR, p); | |
6001 | return p + 4; | |
6002 | } | |
6003 | ||
6004 | static bfd_byte * | |
6005 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6006 | { | |
6007 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6008 | return p + 4; | |
6009 | } | |
6010 | ||
6011 | static bfd_byte * | |
6012 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6013 | { | |
a078d95a | 6014 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6015 | p = p + 4; |
6016 | p = restgpr0 (abfd, p, r); | |
6017 | bfd_put_32 (abfd, MTLR_R0, p); | |
6018 | p = p + 4; | |
6019 | if (r == 29) | |
6020 | { | |
6021 | p = restgpr0 (abfd, p, 30); | |
6022 | p = restgpr0 (abfd, p, 31); | |
6023 | } | |
6024 | bfd_put_32 (abfd, BLR, p); | |
6025 | return p + 4; | |
6026 | } | |
6027 | ||
6028 | static bfd_byte * | |
6029 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6030 | { | |
6031 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6032 | return p + 4; | |
6033 | } | |
6034 | ||
6035 | static bfd_byte * | |
6036 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6037 | { | |
6038 | p = savegpr1 (abfd, p, r); | |
6039 | bfd_put_32 (abfd, BLR, p); | |
6040 | return p + 4; | |
6041 | } | |
6042 | ||
6043 | static bfd_byte * | |
6044 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6045 | { | |
6046 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6047 | return p + 4; | |
6048 | } | |
6049 | ||
6050 | static bfd_byte * | |
6051 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6052 | { | |
6053 | p = restgpr1 (abfd, p, r); | |
6054 | bfd_put_32 (abfd, BLR, p); | |
6055 | return p + 4; | |
6056 | } | |
6057 | ||
6058 | static bfd_byte * | |
6059 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6060 | { | |
6061 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6062 | return p + 4; | |
6063 | } | |
6064 | ||
6065 | static bfd_byte * | |
6066 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6067 | { | |
6068 | p = savefpr (abfd, p, r); | |
a078d95a | 6069 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6070 | p = p + 4; |
6071 | bfd_put_32 (abfd, BLR, p); | |
6072 | return p + 4; | |
6073 | } | |
6074 | ||
6075 | static bfd_byte * | |
6076 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6077 | { | |
6078 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6079 | return p + 4; | |
6080 | } | |
6081 | ||
6082 | static bfd_byte * | |
6083 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6084 | { | |
a078d95a | 6085 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6086 | p = p + 4; |
6087 | p = restfpr (abfd, p, r); | |
6088 | bfd_put_32 (abfd, MTLR_R0, p); | |
6089 | p = p + 4; | |
6090 | if (r == 29) | |
6091 | { | |
6092 | p = restfpr (abfd, p, 30); | |
6093 | p = restfpr (abfd, p, 31); | |
6094 | } | |
6095 | bfd_put_32 (abfd, BLR, p); | |
6096 | return p + 4; | |
6097 | } | |
6098 | ||
6099 | static bfd_byte * | |
6100 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6101 | { | |
6102 | p = savefpr (abfd, p, r); | |
6103 | bfd_put_32 (abfd, BLR, p); | |
6104 | return p + 4; | |
6105 | } | |
6106 | ||
6107 | static bfd_byte * | |
6108 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6109 | { | |
6110 | p = restfpr (abfd, p, r); | |
6111 | bfd_put_32 (abfd, BLR, p); | |
6112 | return p + 4; | |
6113 | } | |
6114 | ||
6115 | static bfd_byte * | |
6116 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6117 | { | |
6118 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6119 | p = p + 4; | |
6120 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6121 | return p + 4; | |
6122 | } | |
6123 | ||
6124 | static bfd_byte * | |
6125 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6126 | { | |
6127 | p = savevr (abfd, p, r); | |
6128 | bfd_put_32 (abfd, BLR, p); | |
6129 | return p + 4; | |
6130 | } | |
6131 | ||
6132 | static bfd_byte * | |
6133 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6134 | { | |
6135 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6136 | p = p + 4; | |
6137 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6138 | return p + 4; | |
6139 | } | |
6140 | ||
6141 | static bfd_byte * | |
6142 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6143 | { | |
6144 | p = restvr (abfd, p, r); | |
6145 | bfd_put_32 (abfd, BLR, p); | |
6146 | return p + 4; | |
6147 | } | |
6148 | ||
9e7028aa AM |
6149 | #define STDU_R1_0R1 0xf8210001 |
6150 | #define ADDI_R1_R1 0x38210000 | |
6151 | ||
6152 | /* Emit prologue of wrapper preserving regs around a call to | |
6153 | __tls_get_addr_opt. */ | |
6154 | ||
6155 | static bfd_byte * | |
6156 | tls_get_addr_prologue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6157 | { | |
6158 | unsigned int i; | |
6159 | ||
6160 | bfd_put_32 (obfd, MFLR_R0, p); | |
6161 | p += 4; | |
6162 | bfd_put_32 (obfd, STD_R0_0R1 + 16, p); | |
6163 | p += 4; | |
6164 | ||
6165 | if (htab->opd_abi) | |
6166 | { | |
6167 | for (i = 4; i < 12; i++) | |
6168 | { | |
6169 | bfd_put_32 (obfd, | |
6170 | STD_R0_0R1 | i << 21 | (-(13 - i) * 8 & 0xffff), p); | |
6171 | p += 4; | |
6172 | } | |
6173 | bfd_put_32 (obfd, STDU_R1_0R1 | (-128 & 0xffff), p); | |
6174 | p += 4; | |
6175 | } | |
6176 | else | |
6177 | { | |
6178 | for (i = 4; i < 12; i++) | |
6179 | { | |
6180 | bfd_put_32 (obfd, | |
6181 | STD_R0_0R1 | i << 21 | (-(12 - i) * 8 & 0xffff), p); | |
6182 | p += 4; | |
6183 | } | |
6184 | bfd_put_32 (obfd, STDU_R1_0R1 | (-96 & 0xffff), p); | |
6185 | p += 4; | |
6186 | } | |
6187 | return p; | |
6188 | } | |
6189 | ||
6190 | /* Emit epilogue of wrapper preserving regs around a call to | |
6191 | __tls_get_addr_opt. */ | |
6192 | ||
6193 | static bfd_byte * | |
6194 | tls_get_addr_epilogue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6195 | { | |
6196 | unsigned int i; | |
6197 | ||
6198 | if (htab->opd_abi) | |
6199 | { | |
6200 | for (i = 4; i < 12; i++) | |
6201 | { | |
6202 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (128 - (13 - i) * 8), p); | |
6203 | p += 4; | |
6204 | } | |
6205 | bfd_put_32 (obfd, ADDI_R1_R1 | 128, p); | |
6206 | p += 4; | |
6207 | } | |
6208 | else | |
6209 | { | |
6210 | for (i = 4; i < 12; i++) | |
6211 | { | |
6212 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (96 - (12 - i) * 8), p); | |
6213 | p += 4; | |
6214 | } | |
6215 | bfd_put_32 (obfd, ADDI_R1_R1 | 96, p); | |
6216 | p += 4; | |
6217 | } | |
6218 | bfd_put_32 (obfd, LD_R0_0R1 | 16, p); | |
6219 | p += 4; | |
6220 | bfd_put_32 (obfd, MTLR_R0, p); | |
6221 | p += 4; | |
6222 | bfd_put_32 (obfd, BLR, p); | |
6223 | p += 4; | |
6224 | return p; | |
6225 | } | |
6226 | ||
e86ce104 AM |
6227 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6228 | information on function code symbol entries to their corresponding | |
6229 | function descriptor symbol entries. */ | |
deb0e272 | 6230 | |
b34976b6 | 6231 | static bfd_boolean |
4ce794b7 | 6232 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6233 | { |
e86ce104 | 6234 | struct bfd_link_info *info; |
65f38f15 | 6235 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6236 | struct ppc_link_hash_entry *fh; |
6237 | struct ppc_link_hash_entry *fdh; | |
6238 | bfd_boolean force_local; | |
5bd4f169 | 6239 | |
ed7007c1 | 6240 | fh = ppc_elf_hash_entry (h); |
50bc7936 | 6241 | if (fh->elf.root.type == bfd_link_hash_indirect) |
b34976b6 | 6242 | return TRUE; |
e86ce104 | 6243 | |
8c5b4e52 AM |
6244 | if (!fh->is_func) |
6245 | return TRUE; | |
6246 | ||
6247 | if (fh->elf.root.root.string[0] != '.' | |
6248 | || fh->elf.root.root.string[1] == '\0') | |
6249 | return TRUE; | |
6250 | ||
4ce794b7 | 6251 | info = inf; |
65f38f15 | 6252 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6253 | if (htab == NULL) |
6254 | return FALSE; | |
5bd4f169 | 6255 | |
8c5b4e52 AM |
6256 | /* Find the corresponding function descriptor symbol. */ |
6257 | fdh = lookup_fdh (fh, htab); | |
6258 | ||
c09bdfe5 AM |
6259 | /* Resolve undefined references to dot-symbols as the value |
6260 | in the function descriptor, if we have one in a regular object. | |
6261 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6262 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6263 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6264 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6265 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6266 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6267 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6268 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6269 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6270 | &fh->elf.root.u.def.section, |
aef36ac1 | 6271 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6272 | { |
b31867b6 | 6273 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6274 | fh->elf.forced_local = 1; |
b31867b6 AM |
6275 | fh->elf.def_regular = fdh->elf.def_regular; |
6276 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6277 | } |
6278 | ||
8c5b4e52 AM |
6279 | if (!fh->elf.dynamic) |
6280 | { | |
6281 | struct plt_entry *ent; | |
5bd4f169 | 6282 | |
8c5b4e52 AM |
6283 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6284 | if (ent->plt.refcount > 0) | |
6285 | break; | |
6286 | if (ent == NULL) | |
6287 | return TRUE; | |
6288 | } | |
5bd4f169 | 6289 | |
8c5b4e52 | 6290 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6291 | if (fdh == NULL |
0e1862bb | 6292 | && !bfd_link_executable (info) |
50bc7936 AM |
6293 | && (fh->elf.root.type == bfd_link_hash_undefined |
6294 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6295 | { | |
908b32fc | 6296 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6297 | if (fdh == NULL) |
6298 | return FALSE; | |
50bc7936 | 6299 | } |
648cca2c | 6300 | |
8c5b4e52 | 6301 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6302 | if (fdh != NULL |
6303 | && fdh->fake | |
8c5b4e52 AM |
6304 | && (fh->elf.root.type == bfd_link_hash_defined |
6305 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6306 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6307 | |
8c5b4e52 AM |
6308 | /* Transfer dynamic linking information to the function descriptor. */ |
6309 | if (fdh != NULL) | |
6310 | { | |
f5385ebf AM |
6311 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6312 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6313 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6314 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6315 | fdh->elf.dynamic |= fh->elf.dynamic; |
6316 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6317 | || fh->elf.type == STT_FUNC | |
6318 | || fh->elf.type == STT_GNU_IFUNC); | |
6319 | move_plt_plist (fh, fdh); | |
6320 | ||
6321 | if (!fdh->elf.forced_local | |
6322 | && fh->elf.dynindx != -1) | |
6323 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6324 | return FALSE; | |
e86ce104 AM |
6325 | } |
6326 | ||
50bc7936 AM |
6327 | /* Now that the info is on the function descriptor, clear the |
6328 | function code sym info. Any function code syms for which we | |
6329 | don't have a definition in a regular file, we force local. | |
6330 | This prevents a shared library from exporting syms that have | |
6331 | been imported from another library. Function code syms that | |
6332 | are really in the library we must leave global to prevent the | |
6333 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6334 | force_local = (!fh->elf.def_regular |
6335 | || fdh == NULL | |
6336 | || !fdh->elf.def_regular | |
6337 | || fdh->elf.forced_local); | |
50bc7936 AM |
6338 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6339 | ||
b34976b6 | 6340 | return TRUE; |
e86ce104 | 6341 | } |
40b8271b | 6342 | |
a4b6fadd AM |
6343 | static const struct sfpr_def_parms save_res_funcs[] = |
6344 | { | |
6345 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6346 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6347 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6348 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6349 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6350 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6351 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6352 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6353 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6354 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6355 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6356 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6357 | }; | |
6358 | ||
e86ce104 | 6359 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
c9405344 AM |
6360 | this hook to a) run the edit functions in this file, b) provide |
6361 | some gcc support functions, and c) transfer dynamic linking | |
6362 | information gathered so far on function code symbol entries, to | |
6363 | their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6364 | |
b34976b6 | 6365 | static bfd_boolean |
c9405344 | 6366 | ppc64_elf_edit (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
e86ce104 AM |
6367 | { |
6368 | struct ppc_link_hash_table *htab; | |
6369 | ||
6370 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6371 | if (htab == NULL) |
6372 | return FALSE; | |
6373 | ||
c9405344 AM |
6374 | /* Call back into the linker, which then runs the edit functions. */ |
6375 | htab->params->edit (); | |
6376 | ||
b32547cd AM |
6377 | /* Provide any missing _save* and _rest* functions. */ |
6378 | if (htab->sfpr != NULL) | |
6379 | { | |
6380 | unsigned int i; | |
6381 | ||
6382 | htab->sfpr->size = 0; | |
6383 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6384 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6385 | return FALSE; | |
6386 | if (htab->sfpr->size == 0) | |
6387 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6388 | } | |
6389 | ||
6390 | if (bfd_link_relocatable (info)) | |
6391 | return TRUE; | |
6392 | ||
6393 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6394 | { |
6395 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6396 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6397 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6398 | if (!htab->elf.hgot->def_regular |
6399 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6400 | { | |
6401 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6402 | htab->elf.hgot->root.u.def.value = 0; | |
6403 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6404 | htab->elf.hgot->def_regular = 1; | |
6405 | htab->elf.hgot->root.linker_def = 1; | |
6406 | } | |
dba6fa9b | 6407 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6408 | htab->elf.hgot->other |
6409 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6410 | } |
c66bb0ee | 6411 | |
8c5b4e52 AM |
6412 | if (htab->need_func_desc_adj) |
6413 | { | |
6414 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6415 | htab->need_func_desc_adj = 0; | |
6416 | } | |
805fc799 | 6417 | |
b34976b6 | 6418 | return TRUE; |
e86ce104 AM |
6419 | } |
6420 | ||
d311bc8b | 6421 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6422 | aliases, that apply to read-only sections. Cannot be used after |
6423 | size_dynamic_sections. */ | |
d311bc8b AM |
6424 | |
6425 | static bfd_boolean | |
6426 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6427 | { | |
ed7007c1 | 6428 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
d311bc8b AM |
6429 | do |
6430 | { | |
5dbc8b37 | 6431 | if (_bfd_elf_readonly_dynrelocs (&eh->elf)) |
d311bc8b | 6432 | return TRUE; |
ed7007c1 | 6433 | eh = ppc_elf_hash_entry (eh->elf.u.alias); |
2cdcc330 AM |
6434 | } |
6435 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6436 | |
6437 | return FALSE; | |
6438 | } | |
8a2058b5 | 6439 | |
8a9e8e72 AM |
6440 | /* Return whether EH has pc-relative dynamic relocs. */ |
6441 | ||
6442 | static bfd_boolean | |
6443 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6444 | { | |
6445 | struct elf_dyn_relocs *p; | |
6446 | ||
190eb1dd | 6447 | for (p = eh->elf.dyn_relocs; p != NULL; p = p->next) |
8a9e8e72 AM |
6448 | if (p->pc_count != 0) |
6449 | return TRUE; | |
6450 | return FALSE; | |
6451 | } | |
6452 | ||
8a2058b5 AM |
6453 | /* Return true if a global entry stub will be created for H. Valid |
6454 | for ELFv2 before plt entries have been allocated. */ | |
6455 | ||
6456 | static bfd_boolean | |
6457 | global_entry_stub (struct elf_link_hash_entry *h) | |
6458 | { | |
6459 | struct plt_entry *pent; | |
6460 | ||
6461 | if (!h->pointer_equality_needed | |
6462 | || h->def_regular) | |
6463 | return FALSE; | |
6464 | ||
6465 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6466 | if (pent->plt.refcount > 0 | |
6467 | && pent->addend == 0) | |
6468 | return TRUE; | |
6469 | ||
6470 | return FALSE; | |
6471 | } | |
6472 | ||
e86ce104 AM |
6473 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6474 | regular object. The current definition is in some section of the | |
6475 | dynamic object, but we're not including those sections. We have to | |
6476 | change the definition to something the rest of the link can | |
6477 | understand. */ | |
6478 | ||
b34976b6 | 6479 | static bfd_boolean |
4ce794b7 AM |
6480 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6481 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6482 | { |
6483 | struct ppc_link_hash_table *htab; | |
5474d94f | 6484 | asection *s, *srel; |
e86ce104 AM |
6485 | |
6486 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6487 | if (htab == NULL) |
6488 | return FALSE; | |
e86ce104 AM |
6489 | |
6490 | /* Deal with function syms. */ | |
6491 | if (h->type == STT_FUNC | |
e054468f | 6492 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6493 | || h->needs_plt) |
e86ce104 | 6494 | { |
ed7007c1 | 6495 | bfd_boolean local = (ppc_elf_hash_entry (h)->save_res |
529fe20e AM |
6496 | || SYMBOL_CALLS_LOCAL (info, h) |
6497 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6498 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6499 | function symbol is local and not an ifunc. We keep dynamic | |
6500 | relocs for ifuncs when local rather than always emitting a | |
6501 | plt call stub for them and defining the symbol on the call | |
6502 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6503 | is defined on a descriptor, not code) and it can be faster at | |
6504 | run-time due to not needing to bounce through a stub. The | |
6505 | dyn_relocs for ifuncs will be applied even in a static | |
6506 | executable. */ | |
6507 | if (!bfd_link_pic (info) | |
6508 | && h->type != STT_GNU_IFUNC | |
6509 | && local) | |
190eb1dd | 6510 | h->dyn_relocs = NULL; |
529fe20e | 6511 | |
e86ce104 AM |
6512 | /* Clear procedure linkage table information for any symbol that |
6513 | won't need a .plt entry. */ | |
411e1bfb AM |
6514 | struct plt_entry *ent; |
6515 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6516 | if (ent->plt.refcount > 0) | |
6517 | break; | |
8387904d | 6518 | if (ent == NULL |
2d7ad24e AM |
6519 | || (h->type != STT_GNU_IFUNC |
6520 | && local | |
3e04d765 | 6521 | && (htab->can_convert_all_inline_plt |
ed7007c1 | 6522 | || (ppc_elf_hash_entry (h)->tls_mask |
3e04d765 | 6523 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) |
40b8271b | 6524 | { |
411e1bfb | 6525 | h->plt.plist = NULL; |
f5385ebf | 6526 | h->needs_plt = 0; |
d1eca1e4 | 6527 | h->pointer_equality_needed = 0; |
40b8271b | 6528 | } |
8a2058b5 | 6529 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6530 | { |
d1eca1e4 AM |
6531 | /* Taking a function's address in a read/write section |
6532 | doesn't require us to define the function symbol in the | |
6533 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6534 | be used instead. The reason we prefer a few more dynamic |
6535 | relocs is that calling via a global entry stub costs a | |
6536 | few more instructions, and pointer_equality_needed causes | |
6537 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6538 | if (global_entry_stub (h)) |
d1eca1e4 | 6539 | { |
5dbc8b37 | 6540 | if (!_bfd_elf_readonly_dynrelocs (h)) |
529fe20e AM |
6541 | { |
6542 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6543 | /* If we haven't seen a branch reloc and the symbol |
6544 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6545 | if (!h->needs_plt) |
6546 | h->plt.plist = NULL; | |
6547 | } | |
6548 | else if (!bfd_link_pic (info)) | |
6549 | /* We are going to be defining the function symbol on the | |
6550 | plt stub, so no dyn_relocs needed when non-pic. */ | |
190eb1dd | 6551 | h->dyn_relocs = NULL; |
d1eca1e4 AM |
6552 | } |
6553 | ||
3988aed5 AM |
6554 | /* ELFv2 function symbols can't have copy relocs. */ |
6555 | return TRUE; | |
6556 | } | |
6557 | else if (!h->needs_plt | |
5dbc8b37 | 6558 | && !_bfd_elf_readonly_dynrelocs (h)) |
3988aed5 | 6559 | { |
04383fd1 AM |
6560 | /* If we haven't seen a branch reloc and the symbol isn't an |
6561 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6562 | h->plt.plist = NULL; |
6563 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6564 | return TRUE; |
6565 | } | |
5bd4f169 | 6566 | } |
bbd7ec4a | 6567 | else |
411e1bfb | 6568 | h->plt.plist = NULL; |
5bd4f169 AM |
6569 | |
6570 | /* If this is a weak symbol, and there is a real definition, the | |
6571 | processor independent code will have arranged for us to see the | |
6572 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6573 | if (h->is_weakalias) |
5bd4f169 | 6574 | { |
60d67dc8 AM |
6575 | struct elf_link_hash_entry *def = weakdef (h); |
6576 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6577 | h->root.u.def.section = def->root.u.def.section; | |
6578 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6579 | if (def->root.u.def.section == htab->elf.sdynbss |
6580 | || def->root.u.def.section == htab->elf.sdynrelro) | |
190eb1dd | 6581 | h->dyn_relocs = NULL; |
b34976b6 | 6582 | return TRUE; |
5bd4f169 AM |
6583 | } |
6584 | ||
5bd4f169 AM |
6585 | /* If we are creating a shared library, we must presume that the |
6586 | only references to the symbol are via the global offset table. | |
6587 | For such cases we need not do anything here; the relocations will | |
6588 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6589 | if (!bfd_link_executable (info)) |
b34976b6 | 6590 | return TRUE; |
5bd4f169 | 6591 | |
65f38f15 AM |
6592 | /* If there are no references to this symbol that do not use the |
6593 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6594 | if (!h->non_got_ref) |
b34976b6 | 6595 | return TRUE; |
65f38f15 | 6596 | |
b186458a | 6597 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6598 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6599 | |
d93d1c80 AM |
6600 | /* If -z nocopyreloc was given, don't generate them either. */ |
6601 | || info->nocopyreloc | |
a127494f | 6602 | |
dce2246a | 6603 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6604 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6605 | || (ELIMINATE_COPY_RELOCS |
6606 | && !h->needs_copy | |
6607 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6608 | |
d93d1c80 AM |
6609 | /* Protected variables do not work with .dynbss. The copy in |
6610 | .dynbss won't be used by the shared library with the protected | |
6611 | definition for the variable. Text relocations are preferable | |
6612 | to an incorrect program. */ | |
6613 | || h->protected_def) | |
529fe20e | 6614 | return TRUE; |
a127494f | 6615 | |
e1c6cf61 AM |
6616 | if (h->type == STT_FUNC |
6617 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6618 | { |
e1c6cf61 AM |
6619 | /* .dynbss copies of function symbols only work if we have |
6620 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6621 | use dot-symbols and set the function symbol size to the text | |
6622 | size of the function rather than the size of the descriptor. | |
6623 | That's wrong for copying a descriptor. */ | |
ed7007c1 | 6624 | if (ppc_elf_hash_entry (h)->oh == NULL |
e1c6cf61 AM |
6625 | || !(h->size == 24 || h->size == 16)) |
6626 | return TRUE; | |
6627 | ||
6628 | /* We should never get here, but unfortunately there are old | |
6629 | versions of gcc (circa gcc-3.2) that improperly for the | |
6630 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6631 | suchlike in read-only sections. Allow them to proceed, but | |
6632 | warn that this might break at runtime. */ | |
25f53a85 | 6633 | info->callbacks->einfo |
c1c8c1ef | 6634 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6635 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6636 | h->root.root.string); |
6637 | } | |
5d35169e AM |
6638 | |
6639 | /* This is a reference to a symbol defined by a dynamic object which | |
6640 | is not a function. */ | |
6641 | ||
5bd4f169 AM |
6642 | /* We must allocate the symbol in our .dynbss section, which will |
6643 | become part of the .bss section of the executable. There will be | |
6644 | an entry for this symbol in the .dynsym section. The dynamic | |
6645 | object will contain position independent code, so all references | |
6646 | from the dynamic object to this symbol will go through the global | |
6647 | offset table. The dynamic linker will use the .dynsym entry to | |
6648 | determine the address it must put in the global offset table, so | |
6649 | both the dynamic object and the regular object will refer to the | |
6650 | same memory location for the variable. */ | |
5474d94f AM |
6651 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6652 | { | |
6653 | s = htab->elf.sdynrelro; | |
6654 | srel = htab->elf.sreldynrelro; | |
6655 | } | |
6656 | else | |
6657 | { | |
6658 | s = htab->elf.sdynbss; | |
6659 | srel = htab->elf.srelbss; | |
6660 | } | |
1d7e9d18 | 6661 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6662 | { |
4a7e5234 AM |
6663 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6664 | linker to copy the initial value out of the dynamic object | |
6665 | and into the runtime process image. */ | |
5474d94f | 6666 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6667 | h->needs_copy = 1; |
5bd4f169 AM |
6668 | } |
6669 | ||
529fe20e | 6670 | /* We no longer want dyn_relocs. */ |
190eb1dd | 6671 | h->dyn_relocs = NULL; |
6cabe1ea | 6672 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6673 | } |
6674 | ||
e86ce104 AM |
6675 | /* If given a function descriptor symbol, hide both the function code |
6676 | sym and the descriptor. */ | |
6677 | static void | |
4ce794b7 AM |
6678 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6679 | struct elf_link_hash_entry *h, | |
6680 | bfd_boolean force_local) | |
e86ce104 | 6681 | { |
34814b9f | 6682 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6683 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6684 | ||
87469ba2 AM |
6685 | if (ppc_hash_table (info) == NULL) |
6686 | return; | |
6687 | ||
ed7007c1 | 6688 | eh = ppc_elf_hash_entry (h); |
34814b9f | 6689 | if (eh->is_func_descriptor) |
e86ce104 | 6690 | { |
34814b9f | 6691 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6692 | |
721956f4 | 6693 | if (fh == NULL) |
d1329ca3 AM |
6694 | { |
6695 | const char *p, *q; | |
b8ac2841 | 6696 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6697 | char save; |
6698 | ||
6699 | /* We aren't supposed to use alloca in BFD because on | |
6700 | systems which do not have alloca the version in libiberty | |
6701 | calls xmalloc, which might cause the program to crash | |
6702 | when it runs out of memory. This function doesn't have a | |
6703 | return status, so there's no way to gracefully return an | |
6704 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6705 | accessed; It's either a string in an ELF string table, |
6706 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6707 | |
34814b9f | 6708 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6709 | save = *p; |
6710 | *(char *) p = '.'; | |
ed7007c1 AM |
6711 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6712 | FALSE, FALSE)); | |
d1329ca3 AM |
6713 | *(char *) p = save; |
6714 | ||
6715 | /* Unfortunately, if it so happens that the string we were | |
6716 | looking for was allocated immediately before this string, | |
6717 | then we overwrote the string terminator. That's the only | |
6718 | reason the lookup should fail. */ | |
6719 | if (fh == NULL) | |
6720 | { | |
34814b9f AM |
6721 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6722 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6723 | --q, --p; |
34814b9f | 6724 | if (q < eh->elf.root.root.string && *p == '.') |
ed7007c1 AM |
6725 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6726 | FALSE, FALSE)); | |
d1329ca3 AM |
6727 | } |
6728 | if (fh != NULL) | |
6729 | { | |
34814b9f AM |
6730 | eh->oh = fh; |
6731 | fh->oh = eh; | |
d1329ca3 AM |
6732 | } |
6733 | } | |
e86ce104 | 6734 | if (fh != NULL) |
34814b9f | 6735 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6736 | } |
6737 | } | |
6738 | ||
411e1bfb | 6739 | static bfd_boolean |
8843416a AM |
6740 | get_sym_h (struct elf_link_hash_entry **hp, |
6741 | Elf_Internal_Sym **symp, | |
6742 | asection **symsecp, | |
f961d9dd | 6743 | unsigned char **tls_maskp, |
8843416a AM |
6744 | Elf_Internal_Sym **locsymsp, |
6745 | unsigned long r_symndx, | |
6746 | bfd *ibfd) | |
411e1bfb | 6747 | { |
0ffa91dd | 6748 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6749 | |
6750 | if (r_symndx >= symtab_hdr->sh_info) | |
6751 | { | |
6752 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6753 | struct elf_link_hash_entry *h; | |
6754 | ||
6755 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6756 | h = elf_follow_link (h); |
411e1bfb AM |
6757 | |
6758 | if (hp != NULL) | |
6759 | *hp = h; | |
6760 | ||
6761 | if (symp != NULL) | |
6762 | *symp = NULL; | |
6763 | ||
6764 | if (symsecp != NULL) | |
6765 | { | |
6766 | asection *symsec = NULL; | |
6767 | if (h->root.type == bfd_link_hash_defined | |
6768 | || h->root.type == bfd_link_hash_defweak) | |
6769 | symsec = h->root.u.def.section; | |
6770 | *symsecp = symsec; | |
6771 | } | |
6772 | ||
e7b938ca | 6773 | if (tls_maskp != NULL) |
ed7007c1 | 6774 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; |
411e1bfb AM |
6775 | } |
6776 | else | |
6777 | { | |
6778 | Elf_Internal_Sym *sym; | |
6779 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6780 | ||
6781 | if (locsyms == NULL) | |
6782 | { | |
6783 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6784 | if (locsyms == NULL) | |
6785 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6786 | symtab_hdr->sh_info, | |
6787 | 0, NULL, NULL, NULL); | |
6788 | if (locsyms == NULL) | |
6789 | return FALSE; | |
6790 | *locsymsp = locsyms; | |
6791 | } | |
6792 | sym = locsyms + r_symndx; | |
6793 | ||
6794 | if (hp != NULL) | |
6795 | *hp = NULL; | |
6796 | ||
6797 | if (symp != NULL) | |
6798 | *symp = sym; | |
6799 | ||
6800 | if (symsecp != NULL) | |
cb33740c | 6801 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6802 | |
e7b938ca | 6803 | if (tls_maskp != NULL) |
411e1bfb AM |
6804 | { |
6805 | struct got_entry **lgot_ents; | |
f961d9dd | 6806 | unsigned char *tls_mask; |
411e1bfb | 6807 | |
e7b938ca | 6808 | tls_mask = NULL; |
411e1bfb AM |
6809 | lgot_ents = elf_local_got_ents (ibfd); |
6810 | if (lgot_ents != NULL) | |
6811 | { | |
e054468f AM |
6812 | struct plt_entry **local_plt = (struct plt_entry **) |
6813 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6814 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6815 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6816 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6817 | } |
e7b938ca | 6818 | *tls_maskp = tls_mask; |
411e1bfb AM |
6819 | } |
6820 | } | |
6821 | return TRUE; | |
6822 | } | |
6823 | ||
e7b938ca | 6824 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6825 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6826 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6827 | |
6828 | static int | |
f961d9dd | 6829 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6830 | unsigned long *toc_symndx, |
6831 | bfd_vma *toc_addend, | |
0d4792f7 | 6832 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6833 | const Elf_Internal_Rela *rel, |
6834 | bfd *ibfd) | |
411e1bfb AM |
6835 | { |
6836 | unsigned long r_symndx; | |
0d4792f7 | 6837 | int next_r; |
411e1bfb AM |
6838 | struct elf_link_hash_entry *h; |
6839 | Elf_Internal_Sym *sym; | |
6840 | asection *sec; | |
6841 | bfd_vma off; | |
6842 | ||
6843 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6844 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6845 | return 0; |
411e1bfb | 6846 | |
37da22e5 AM |
6847 | if ((*tls_maskp != NULL |
6848 | && (**tls_maskp & TLS_TLS) != 0 | |
6849 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6850 | || sec == NULL |
6bee8834 | 6851 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6852 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6853 | return 1; |
411e1bfb AM |
6854 | |
6855 | /* Look inside a TOC section too. */ | |
6856 | if (h != NULL) | |
6857 | { | |
6858 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6859 | off = h->root.u.def.value; | |
6860 | } | |
6861 | else | |
6862 | off = sym->st_value; | |
6863 | off += rel->r_addend; | |
6864 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6865 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6866 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6867 | if (toc_symndx != NULL) |
6868 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6869 | if (toc_addend != NULL) |
6870 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6871 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6872 | return 0; | |
854b41e7 | 6873 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6874 | && (next_r == -1 || next_r == -2)) |
6875 | return 1 - next_r; | |
951fd09b | 6876 | return 1; |
411e1bfb AM |
6877 | } |
6878 | ||
3b421ab3 AM |
6879 | /* Find (or create) an entry in the tocsave hash table. */ |
6880 | ||
6881 | static struct tocsave_entry * | |
6882 | tocsave_find (struct ppc_link_hash_table *htab, | |
6883 | enum insert_option insert, | |
6884 | Elf_Internal_Sym **local_syms, | |
6885 | const Elf_Internal_Rela *irela, | |
6886 | bfd *ibfd) | |
6887 | { | |
6888 | unsigned long r_indx; | |
6889 | struct elf_link_hash_entry *h; | |
6890 | Elf_Internal_Sym *sym; | |
6891 | struct tocsave_entry ent, *p; | |
6892 | hashval_t hash; | |
6893 | struct tocsave_entry **slot; | |
6894 | ||
6895 | r_indx = ELF64_R_SYM (irela->r_info); | |
6896 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6897 | return NULL; | |
6898 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6899 | { | |
4eca0228 | 6900 | _bfd_error_handler |
871b3ab2 | 6901 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6902 | return NULL; |
6903 | } | |
6904 | ||
6905 | if (h != NULL) | |
6906 | ent.offset = h->root.u.def.value; | |
6907 | else | |
6908 | ent.offset = sym->st_value; | |
6909 | ent.offset += irela->r_addend; | |
6910 | ||
6911 | hash = tocsave_htab_hash (&ent); | |
6912 | slot = ((struct tocsave_entry **) | |
6913 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6914 | if (slot == NULL) | |
6915 | return NULL; | |
6916 | ||
6917 | if (*slot == NULL) | |
6918 | { | |
6919 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6920 | if (p == NULL) | |
6921 | return NULL; | |
6922 | *p = ent; | |
6923 | *slot = p; | |
6924 | } | |
6925 | return *slot; | |
6926 | } | |
6927 | ||
754021d0 | 6928 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6929 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6930 | |
6931 | static bfd_boolean | |
6932 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6933 | { | |
6934 | struct ppc_link_hash_entry *eh; | |
6935 | asection *sym_sec; | |
74f0fb50 | 6936 | struct _opd_sec_data *opd; |
754021d0 AM |
6937 | |
6938 | if (h->root.type == bfd_link_hash_indirect) | |
6939 | return TRUE; | |
6940 | ||
754021d0 AM |
6941 | if (h->root.type != bfd_link_hash_defined |
6942 | && h->root.type != bfd_link_hash_defweak) | |
6943 | return TRUE; | |
6944 | ||
ed7007c1 | 6945 | eh = ppc_elf_hash_entry (h); |
754021d0 AM |
6946 | if (eh->adjust_done) |
6947 | return TRUE; | |
6948 | ||
6949 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6950 | opd = get_opd_info (sym_sec); |
6951 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6952 | { |
51aecdc5 | 6953 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6954 | if (adjust == -1) |
6955 | { | |
6956 | /* This entry has been deleted. */ | |
b3fac117 | 6957 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6958 | if (dsec == NULL) |
6959 | { | |
6960 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6961 | if (discarded_section (dsec)) |
81688140 | 6962 | { |
b3fac117 | 6963 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6964 | break; |
6965 | } | |
6966 | } | |
4025353c | 6967 | eh->elf.root.u.def.value = 0; |
81688140 | 6968 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6969 | } |
6970 | else | |
6971 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6972 | eh->adjust_done = 1; |
6973 | } | |
6974 | return TRUE; | |
6975 | } | |
6976 | ||
8c1d1bb8 | 6977 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6978 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6979 | have already been determined. */ |
6980 | ||
6981 | static bfd_boolean | |
6982 | dec_dynrel_count (bfd_vma r_info, | |
6983 | asection *sec, | |
6984 | struct bfd_link_info *info, | |
6985 | Elf_Internal_Sym **local_syms, | |
6986 | struct elf_link_hash_entry *h, | |
19e08130 | 6987 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6988 | { |
6989 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6990 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6991 | |
6992 | /* Can this reloc be dynamic? This switch, and later tests here | |
6993 | should be kept in sync with the code in check_relocs. */ | |
6994 | r_type = ELF64_R_TYPE (r_info); | |
6995 | switch (r_type) | |
6996 | { | |
6997 | default: | |
6998 | return TRUE; | |
6999 | ||
1bdd8fac AM |
7000 | case R_PPC64_TOC16: |
7001 | case R_PPC64_TOC16_DS: | |
7002 | case R_PPC64_TOC16_LO: | |
7003 | case R_PPC64_TOC16_HI: | |
7004 | case R_PPC64_TOC16_HA: | |
7005 | case R_PPC64_TOC16_LO_DS: | |
7006 | if (h == NULL) | |
7007 | return TRUE; | |
7008 | break; | |
7009 | ||
8c1d1bb8 AM |
7010 | case R_PPC64_TPREL16: |
7011 | case R_PPC64_TPREL16_LO: | |
7012 | case R_PPC64_TPREL16_HI: | |
7013 | case R_PPC64_TPREL16_HA: | |
7014 | case R_PPC64_TPREL16_DS: | |
7015 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7016 | case R_PPC64_TPREL16_HIGH: |
7017 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7018 | case R_PPC64_TPREL16_HIGHER: |
7019 | case R_PPC64_TPREL16_HIGHERA: | |
7020 | case R_PPC64_TPREL16_HIGHEST: | |
7021 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 7022 | case R_PPC64_TPREL64: |
c213164a | 7023 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
7024 | case R_PPC64_DTPMOD64: |
7025 | case R_PPC64_DTPREL64: | |
7026 | case R_PPC64_ADDR64: | |
7027 | case R_PPC64_REL30: | |
7028 | case R_PPC64_REL32: | |
7029 | case R_PPC64_REL64: | |
7030 | case R_PPC64_ADDR14: | |
7031 | case R_PPC64_ADDR14_BRNTAKEN: | |
7032 | case R_PPC64_ADDR14_BRTAKEN: | |
7033 | case R_PPC64_ADDR16: | |
7034 | case R_PPC64_ADDR16_DS: | |
7035 | case R_PPC64_ADDR16_HA: | |
7036 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7037 | case R_PPC64_ADDR16_HIGH: |
7038 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7039 | case R_PPC64_ADDR16_HIGHER: |
7040 | case R_PPC64_ADDR16_HIGHERA: | |
7041 | case R_PPC64_ADDR16_HIGHEST: | |
7042 | case R_PPC64_ADDR16_HIGHESTA: | |
7043 | case R_PPC64_ADDR16_LO: | |
7044 | case R_PPC64_ADDR16_LO_DS: | |
7045 | case R_PPC64_ADDR24: | |
7046 | case R_PPC64_ADDR32: | |
7047 | case R_PPC64_UADDR16: | |
7048 | case R_PPC64_UADDR32: | |
7049 | case R_PPC64_UADDR64: | |
7050 | case R_PPC64_TOC: | |
5663e321 AM |
7051 | case R_PPC64_D34: |
7052 | case R_PPC64_D34_LO: | |
7053 | case R_PPC64_D34_HI30: | |
7054 | case R_PPC64_D34_HA30: | |
7055 | case R_PPC64_ADDR16_HIGHER34: | |
7056 | case R_PPC64_ADDR16_HIGHERA34: | |
7057 | case R_PPC64_ADDR16_HIGHEST34: | |
7058 | case R_PPC64_ADDR16_HIGHESTA34: | |
7059 | case R_PPC64_D28: | |
8c1d1bb8 AM |
7060 | break; |
7061 | } | |
7062 | ||
7063 | if (local_syms != NULL) | |
7064 | { | |
7065 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7066 | bfd *ibfd = sec->owner; |
7067 | ||
7068 | r_symndx = ELF64_R_SYM (r_info); | |
7069 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7070 | return FALSE; | |
7071 | } | |
7072 | ||
ec73ddcd AM |
7073 | if ((h != NULL |
7074 | && (h->root.type == bfd_link_hash_defweak | |
7075 | || !h->def_regular)) | |
7076 | || (h != NULL | |
7077 | && !bfd_link_executable (info) | |
7078 | && !SYMBOLIC_BIND (info, h)) | |
7079 | || (bfd_link_pic (info) | |
7080 | && must_be_dyn_reloc (info, r_type)) | |
7081 | || (!bfd_link_pic (info) | |
7082 | && (h != NULL | |
7083 | ? h->type == STT_GNU_IFUNC | |
7084 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
7085 | ; |
7086 | else | |
7087 | return TRUE; | |
7088 | ||
7089 | if (h != NULL) | |
6edfbbad | 7090 | { |
19e08130 AM |
7091 | struct elf_dyn_relocs *p; |
7092 | struct elf_dyn_relocs **pp; | |
190eb1dd | 7093 | pp = &h->dyn_relocs; |
19e08130 AM |
7094 | |
7095 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7096 | with local syms for a given section. Also, symbol flags are | |
7097 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7098 | report a dynreloc miscount. */ | |
7099 | if (*pp == NULL && info->gc_sections) | |
7100 | return TRUE; | |
7101 | ||
7102 | while ((p = *pp) != NULL) | |
60124e18 | 7103 | { |
19e08130 AM |
7104 | if (p->sec == sec) |
7105 | { | |
7106 | if (!must_be_dyn_reloc (info, r_type)) | |
7107 | p->pc_count -= 1; | |
7108 | p->count -= 1; | |
7109 | if (p->count == 0) | |
7110 | *pp = p->next; | |
7111 | return TRUE; | |
7112 | } | |
7113 | pp = &p->next; | |
60124e18 | 7114 | } |
6edfbbad | 7115 | } |
19e08130 AM |
7116 | else |
7117 | { | |
7118 | struct ppc_dyn_relocs *p; | |
7119 | struct ppc_dyn_relocs **pp; | |
7120 | void *vpp; | |
7121 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7122 | |
19e08130 AM |
7123 | if (local_syms == NULL) |
7124 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7125 | if (sym_sec == NULL) | |
7126 | sym_sec = sec; | |
c57da1a7 | 7127 | |
19e08130 AM |
7128 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7129 | pp = (struct ppc_dyn_relocs **) vpp; | |
7130 | ||
7131 | if (*pp == NULL && info->gc_sections) | |
7132 | return TRUE; | |
7133 | ||
7134 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7135 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7136 | { |
19e08130 AM |
7137 | if (p->sec == sec && p->ifunc == is_ifunc) |
7138 | { | |
7139 | p->count -= 1; | |
7140 | if (p->count == 0) | |
7141 | *pp = p->next; | |
7142 | return TRUE; | |
7143 | } | |
7144 | pp = &p->next; | |
8c1d1bb8 | 7145 | } |
8c1d1bb8 AM |
7146 | } |
7147 | ||
695344c0 | 7148 | /* xgettext:c-format */ |
cf97bcb0 AM |
7149 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7150 | sec->owner, sec); | |
8c1d1bb8 AM |
7151 | bfd_set_error (bfd_error_bad_value); |
7152 | return FALSE; | |
7153 | } | |
7154 | ||
754021d0 AM |
7155 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7156 | only remove those associated with functions in discarded link-once | |
7157 | sections, or weakly defined functions that have been overridden. It | |
7158 | would be possible to remove many more entries for statically linked | |
7159 | applications. */ | |
7160 | ||
b34976b6 | 7161 | bfd_boolean |
e7d1c40c | 7162 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7163 | { |
7164 | bfd *ibfd; | |
754021d0 | 7165 | bfd_boolean some_edited = FALSE; |
3f764659 | 7166 | asection *need_pad = NULL; |
e7d1c40c AM |
7167 | struct ppc_link_hash_table *htab; |
7168 | ||
7169 | htab = ppc_hash_table (info); | |
7170 | if (htab == NULL) | |
7171 | return FALSE; | |
1e2f5b6e | 7172 | |
c72f2fb2 | 7173 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7174 | { |
7175 | asection *sec; | |
7176 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7177 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7178 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7179 | struct _opd_sec_data *opd; |
51aecdc5 | 7180 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7181 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7182 | |
854b41e7 AM |
7183 | if (!is_ppc64_elf (ibfd)) |
7184 | continue; | |
7185 | ||
1e2f5b6e | 7186 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7187 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7188 | continue; |
7189 | ||
dbaa2011 | 7190 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7191 | continue; |
7192 | ||
1e2f5b6e AM |
7193 | if (sec->output_section == bfd_abs_section_ptr) |
7194 | continue; | |
7195 | ||
7196 | /* Look through the section relocs. */ | |
7197 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7198 | continue; | |
7199 | ||
6cdc0ccc | 7200 | local_syms = NULL; |
0ffa91dd | 7201 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7202 | |
7203 | /* Read the relocations. */ | |
4ce794b7 | 7204 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7205 | info->keep_memory); |
1e2f5b6e | 7206 | if (relstart == NULL) |
b34976b6 | 7207 | return FALSE; |
1e2f5b6e AM |
7208 | |
7209 | /* First run through the relocs to check they are sane, and to | |
7210 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7211 | need_edit = FALSE; |
51aecdc5 | 7212 | broken = FALSE; |
3f764659 | 7213 | need_pad = sec; |
1e2f5b6e | 7214 | relend = relstart + sec->reloc_count; |
50bc7936 | 7215 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7216 | { |
04c9666a | 7217 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7218 | unsigned long r_symndx; |
7219 | asection *sym_sec; | |
7220 | struct elf_link_hash_entry *h; | |
7221 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7222 | bfd_vma offset; |
1e2f5b6e | 7223 | |
51aecdc5 | 7224 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7225 | only interested in the reloc pointing to a function entry |
7226 | point. */ | |
51aecdc5 AM |
7227 | offset = rel->r_offset; |
7228 | if (rel + 1 == relend | |
7229 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7230 | { |
7231 | /* If someone messes with .opd alignment then after a | |
7232 | "ld -r" we might have padding in the middle of .opd. | |
7233 | Also, there's nothing to prevent someone putting | |
7234 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7235 | optimization for them! */ |
3f764659 | 7236 | broken_opd: |
4eca0228 | 7237 | _bfd_error_handler |
871b3ab2 | 7238 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7239 | broken = TRUE; |
1e2f5b6e AM |
7240 | break; |
7241 | } | |
7242 | ||
50bc7936 AM |
7243 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7244 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7245 | { | |
4eca0228 | 7246 | _bfd_error_handler |
695344c0 | 7247 | /* xgettext:c-format */ |
871b3ab2 | 7248 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7249 | ibfd, r_type); |
51aecdc5 | 7250 | broken = TRUE; |
50bc7936 AM |
7251 | break; |
7252 | } | |
7253 | ||
1e2f5b6e | 7254 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7255 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7256 | r_symndx, ibfd)) | |
50bc7936 | 7257 | goto error_ret; |
1e2f5b6e AM |
7258 | |
7259 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7260 | { | |
411e1bfb AM |
7261 | const char *sym_name; |
7262 | if (h != NULL) | |
7263 | sym_name = h->root.root.string; | |
7264 | else | |
26c61ae5 L |
7265 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7266 | sym_sec); | |
411e1bfb | 7267 | |
4eca0228 | 7268 | _bfd_error_handler |
695344c0 | 7269 | /* xgettext:c-format */ |
871b3ab2 | 7270 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7271 | ibfd, sym_name); |
51aecdc5 | 7272 | broken = TRUE; |
1e2f5b6e AM |
7273 | break; |
7274 | } | |
7275 | ||
51020317 AM |
7276 | /* opd entries are always for functions defined in the |
7277 | current input bfd. If the symbol isn't defined in the | |
7278 | input bfd, then we won't be using the function in this | |
7279 | bfd; It must be defined in a linkonce section in another | |
7280 | bfd, or is weak. It's also possible that we are | |
7281 | discarding the function due to a linker script /DISCARD/, | |
7282 | which we test for via the output_section. */ | |
7283 | if (sym_sec->owner != ibfd | |
7284 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7285 | need_edit = TRUE; |
1e2f5b6e | 7286 | |
50bc7936 | 7287 | rel += 2; |
51aecdc5 AM |
7288 | if (rel + 1 == relend |
7289 | || (rel + 2 < relend | |
7290 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7291 | ++rel; | |
7292 | ||
7293 | if (rel == relend) | |
3f764659 JJ |
7294 | { |
7295 | if (sec->size == offset + 24) | |
7296 | { | |
7297 | need_pad = NULL; | |
7298 | break; | |
7299 | } | |
51aecdc5 | 7300 | if (sec->size == offset + 16) |
3f764659 JJ |
7301 | { |
7302 | cnt_16b++; | |
7303 | break; | |
7304 | } | |
7305 | goto broken_opd; | |
7306 | } | |
3f764659 JJ |
7307 | else if (rel + 1 < relend |
7308 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7309 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7310 | { | |
51aecdc5 AM |
7311 | if (rel[0].r_offset == offset + 16) |
7312 | cnt_16b++; | |
7313 | else if (rel[0].r_offset != offset + 24) | |
7314 | goto broken_opd; | |
3f764659 JJ |
7315 | } |
7316 | else | |
7317 | goto broken_opd; | |
1e2f5b6e AM |
7318 | } |
7319 | ||
e7d1c40c | 7320 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7321 | |
51aecdc5 | 7322 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7323 | { |
7324 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7325 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7326 | bfd_byte *rptr, *wptr; |
983bddc8 | 7327 | bfd_byte *new_contents; |
74f0fb50 AM |
7328 | bfd_size_type amt; |
7329 | ||
983bddc8 | 7330 | new_contents = NULL; |
51aecdc5 | 7331 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7332 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7333 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7334 | if (opd->adjust == NULL) |
7335 | return FALSE; | |
1e2f5b6e AM |
7336 | |
7337 | /* This seems a waste of time as input .opd sections are all | |
7338 | zeros as generated by gcc, but I suppose there's no reason | |
7339 | this will always be so. We might start putting something in | |
7340 | the third word of .opd entries. */ | |
7341 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7342 | { | |
eea6121a AM |
7343 | bfd_byte *loc; |
7344 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7345 | { |
c9594989 | 7346 | free (loc); |
50bc7936 | 7347 | error_ret: |
c9594989 | 7348 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
6cdc0ccc | 7349 | free (local_syms); |
6cdc0ccc AM |
7350 | if (elf_section_data (sec)->relocs != relstart) |
7351 | free (relstart); | |
b34976b6 | 7352 | return FALSE; |
6cdc0ccc | 7353 | } |
1e2f5b6e AM |
7354 | sec->contents = loc; |
7355 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7356 | } | |
7357 | ||
7358 | elf_section_data (sec)->relocs = relstart; | |
7359 | ||
3f764659 | 7360 | new_contents = sec->contents; |
3f764659 JJ |
7361 | if (add_aux_fields) |
7362 | { | |
7363 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7364 | if (new_contents == NULL) | |
7365 | return FALSE; | |
51aecdc5 | 7366 | need_pad = NULL; |
3f764659 | 7367 | } |
b4f4e59f AM |
7368 | wptr = new_contents; |
7369 | rptr = sec->contents; | |
1e2f5b6e | 7370 | write_rel = relstart; |
51aecdc5 | 7371 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7372 | { |
50bc7936 AM |
7373 | unsigned long r_symndx; |
7374 | asection *sym_sec; | |
7375 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7376 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7377 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7378 | long opd_ent_size; |
7379 | Elf_Internal_Rela *next_rel; | |
7380 | bfd_boolean skip; | |
50bc7936 AM |
7381 | |
7382 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7383 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7384 | r_symndx, ibfd)) |
50bc7936 AM |
7385 | goto error_ret; |
7386 | ||
51aecdc5 AM |
7387 | next_rel = rel + 2; |
7388 | if (next_rel + 1 == relend | |
7389 | || (next_rel + 2 < relend | |
7390 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7391 | ++next_rel; | |
7392 | ||
7393 | /* See if the .opd entry is full 24 byte or | |
7394 | 16 byte (with fd_aux entry overlapped with next | |
7395 | fd_func). */ | |
7396 | opd_ent_size = 24; | |
7397 | if (next_rel == relend) | |
1e2f5b6e | 7398 | { |
51aecdc5 | 7399 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7400 | opd_ent_size = 16; |
51aecdc5 AM |
7401 | } |
7402 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7403 | opd_ent_size = 16; | |
3f764659 | 7404 | |
51aecdc5 AM |
7405 | if (h != NULL |
7406 | && h->root.root.string[0] == '.') | |
7407 | { | |
ed7007c1 | 7408 | fdh = ppc_elf_hash_entry (h)->oh; |
8c5b4e52 AM |
7409 | if (fdh != NULL) |
7410 | { | |
7411 | fdh = ppc_follow_link (fdh); | |
7412 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7413 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7414 | fdh = NULL; | |
7415 | } | |
51aecdc5 | 7416 | } |
1e2f5b6e | 7417 | |
51aecdc5 AM |
7418 | skip = (sym_sec->owner != ibfd |
7419 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7420 | if (skip) | |
7421 | { | |
7422 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7423 | { |
51aecdc5 AM |
7424 | /* Arrange for the function descriptor sym |
7425 | to be dropped. */ | |
7426 | fdh->elf.root.u.def.value = 0; | |
7427 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7428 | } |
51aecdc5 | 7429 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7430 | |
0e1862bb | 7431 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7432 | rel = next_rel; |
7433 | else | |
7434 | while (1) | |
7435 | { | |
7436 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7437 | NULL, h, sym)) | |
7438 | goto error_ret; | |
754021d0 | 7439 | |
51aecdc5 AM |
7440 | if (++rel == next_rel) |
7441 | break; | |
1e2f5b6e | 7442 | |
51aecdc5 AM |
7443 | r_symndx = ELF64_R_SYM (rel->r_info); |
7444 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7445 | r_symndx, ibfd)) | |
7446 | goto error_ret; | |
7447 | } | |
50bc7936 AM |
7448 | } |
7449 | else | |
1e2f5b6e | 7450 | { |
51aecdc5 AM |
7451 | /* We'll be keeping this opd entry. */ |
7452 | long adjust; | |
7453 | ||
7454 | if (fdh != NULL) | |
7455 | { | |
7456 | /* Redefine the function descriptor symbol to | |
7457 | this location in the opd section. It is | |
7458 | necessary to update the value here rather | |
7459 | than using an array of adjustments as we do | |
7460 | for local symbols, because various places | |
7461 | in the generic ELF code use the value | |
7462 | stored in u.def.value. */ | |
7463 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7464 | fdh->adjust_done = 1; | |
7465 | } | |
7466 | ||
7467 | /* Local syms are a bit tricky. We could | |
7468 | tweak them as they can be cached, but | |
7469 | we'd need to look through the local syms | |
7470 | for the function descriptor sym which we | |
7471 | don't have at the moment. So keep an | |
7472 | array of adjustments. */ | |
7473 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7474 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7475 | ||
7476 | if (wptr != rptr) | |
7477 | memcpy (wptr, rptr, opd_ent_size); | |
7478 | wptr += opd_ent_size; | |
7479 | if (add_aux_fields && opd_ent_size == 16) | |
7480 | { | |
7481 | memset (wptr, '\0', 8); | |
7482 | wptr += 8; | |
7483 | } | |
7484 | ||
50bc7936 | 7485 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7486 | new opd entries. */ |
7487 | for ( ; rel != next_rel; ++rel) | |
7488 | { | |
7489 | rel->r_offset += adjust; | |
7490 | if (write_rel != rel) | |
7491 | memcpy (write_rel, rel, sizeof (*rel)); | |
7492 | ++write_rel; | |
7493 | } | |
1e2f5b6e | 7494 | } |
51aecdc5 AM |
7495 | |
7496 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7497 | } |
7498 | ||
3f764659 | 7499 | sec->size = wptr - new_contents; |
1e2f5b6e | 7500 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7501 | if (add_aux_fields) |
7502 | { | |
7503 | free (sec->contents); | |
7504 | sec->contents = new_contents; | |
7505 | } | |
7506 | ||
05bf9422 | 7507 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7508 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7509 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7510 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7511 | some_edited = TRUE; |
1e2f5b6e | 7512 | } |
6cdc0ccc | 7513 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7514 | free (relstart); |
6cdc0ccc | 7515 | |
411e1bfb AM |
7516 | if (local_syms != NULL |
7517 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7518 | { | |
7519 | if (!info->keep_memory) | |
7520 | free (local_syms); | |
7521 | else | |
7522 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7523 | } | |
7524 | } | |
7525 | ||
754021d0 AM |
7526 | if (some_edited) |
7527 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7528 | ||
3f764659 JJ |
7529 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7530 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7531 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7532 | { |
7533 | bfd_byte *p; | |
7534 | ||
7535 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7536 | { | |
7537 | BFD_ASSERT (need_pad->size > 0); | |
7538 | ||
7539 | p = bfd_malloc (need_pad->size + 8); | |
7540 | if (p == NULL) | |
7541 | return FALSE; | |
699733f6 | 7542 | |
2cdcc330 AM |
7543 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7544 | p, 0, need_pad->size)) | |
3f764659 JJ |
7545 | return FALSE; |
7546 | ||
7547 | need_pad->contents = p; | |
7548 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7549 | } | |
7550 | else | |
7551 | { | |
7552 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7553 | if (p == NULL) | |
7554 | return FALSE; | |
7555 | ||
7556 | need_pad->contents = p; | |
7557 | } | |
7558 | ||
7559 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7560 | need_pad->size += 8; | |
7561 | } | |
7562 | ||
411e1bfb AM |
7563 | return TRUE; |
7564 | } | |
7565 | ||
3e04d765 AM |
7566 | /* Analyze inline PLT call relocations to see whether calls to locally |
7567 | defined functions can be converted to direct calls. */ | |
7568 | ||
7569 | bfd_boolean | |
7570 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7571 | { | |
7572 | struct ppc_link_hash_table *htab; | |
7573 | bfd *ibfd; | |
7574 | asection *sec; | |
7575 | bfd_vma low_vma, high_vma, limit; | |
7576 | ||
7577 | htab = ppc_hash_table (info); | |
7578 | if (htab == NULL) | |
7579 | return FALSE; | |
7580 | ||
7581 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7582 | reduced somewhat to cater for possible stubs that might be added | |
7583 | between the call and its destination. */ | |
7584 | if (htab->params->group_size < 0) | |
7585 | { | |
7586 | limit = -htab->params->group_size; | |
7587 | if (limit == 1) | |
7588 | limit = 0x1e00000; | |
7589 | } | |
7590 | else | |
7591 | { | |
7592 | limit = htab->params->group_size; | |
7593 | if (limit == 1) | |
7594 | limit = 0x1c00000; | |
7595 | } | |
7596 | ||
7597 | low_vma = -1; | |
7598 | high_vma = 0; | |
7599 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7600 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7601 | { | |
7602 | if (low_vma > sec->vma) | |
7603 | low_vma = sec->vma; | |
7604 | if (high_vma < sec->vma + sec->size) | |
7605 | high_vma = sec->vma + sec->size; | |
7606 | } | |
7607 | ||
7608 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7609 | convert all inline PLT sequences to direct calls when the symbol | |
7610 | is local. */ | |
7611 | if (high_vma - low_vma < limit) | |
7612 | { | |
7613 | htab->can_convert_all_inline_plt = 1; | |
7614 | return TRUE; | |
7615 | } | |
7616 | ||
7617 | /* Otherwise, go looking through relocs for cases where a direct | |
7618 | call won't reach. Mark the symbol on any such reloc to disable | |
7619 | the optimization and keep the PLT entry as it seems likely that | |
7620 | this will be better than creating trampolines. Note that this | |
7621 | will disable the optimization for all inline PLT calls to a | |
7622 | particular symbol, not just those that won't reach. The | |
7623 | difficulty in doing a more precise optimization is that the | |
7624 | linker needs to make a decision depending on whether a | |
7625 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7626 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7627 | the sequence, and there is nothing that ties those relocs | |
7628 | together except their symbol. */ | |
7629 | ||
7630 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7631 | { | |
7632 | Elf_Internal_Shdr *symtab_hdr; | |
7633 | Elf_Internal_Sym *local_syms; | |
7634 | ||
7635 | if (!is_ppc64_elf (ibfd)) | |
7636 | continue; | |
7637 | ||
7638 | local_syms = NULL; | |
7639 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7640 | ||
7641 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7642 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7643 | && !bfd_is_abs_section (sec->output_section)) | |
7644 | { | |
7645 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7646 | ||
7647 | /* Read the relocations. */ | |
7648 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7649 | info->keep_memory); | |
7650 | if (relstart == NULL) | |
7651 | return FALSE; | |
7652 | ||
7653 | relend = relstart + sec->reloc_count; | |
435edf0b | 7654 | for (rel = relstart; rel < relend; rel++) |
3e04d765 AM |
7655 | { |
7656 | enum elf_ppc64_reloc_type r_type; | |
7657 | unsigned long r_symndx; | |
7658 | asection *sym_sec; | |
7659 | struct elf_link_hash_entry *h; | |
7660 | Elf_Internal_Sym *sym; | |
7661 | unsigned char *tls_maskp; | |
7662 | ||
7663 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7664 | if (r_type != R_PPC64_PLTCALL |
7665 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7666 | continue; |
7667 | ||
7668 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7669 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7670 | r_symndx, ibfd)) | |
7671 | { | |
7672 | if (elf_section_data (sec)->relocs != relstart) | |
7673 | free (relstart); | |
c9594989 | 7674 | if (symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7675 | free (local_syms); |
7676 | return FALSE; | |
7677 | } | |
7678 | ||
7679 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7680 | { | |
7681 | bfd_vma from, to; | |
7682 | if (h != NULL) | |
7683 | to = h->root.u.def.value; | |
7684 | else | |
7685 | to = sym->st_value; | |
7686 | to += (rel->r_addend | |
7687 | + sym_sec->output_offset | |
7688 | + sym_sec->output_section->vma); | |
7689 | from = (rel->r_offset | |
7690 | + sec->output_offset | |
7691 | + sec->output_section->vma); | |
5663e321 AM |
7692 | if (to - from + limit < 2 * limit |
7693 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7694 | && (((h ? h->other : sym->st_other) | |
7695 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7696 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7697 | *tls_maskp &= ~PLT_KEEP; |
7698 | } | |
7699 | } | |
7700 | if (elf_section_data (sec)->relocs != relstart) | |
7701 | free (relstart); | |
7702 | } | |
7703 | ||
7704 | if (local_syms != NULL | |
7705 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7706 | { | |
7707 | if (!info->keep_memory) | |
7708 | free (local_syms); | |
7709 | else | |
7710 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7711 | } | |
7712 | } | |
7713 | ||
7714 | return TRUE; | |
7715 | } | |
7716 | ||
c9405344 AM |
7717 | /* Set htab->tls_get_addr and various other info specific to TLS. |
7718 | This needs to run before dynamic symbols are processed in | |
7719 | bfd_elf_size_dynamic_sections. */ | |
411e1bfb | 7720 | |
c9405344 | 7721 | bfd_boolean |
e7d1c40c | 7722 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7723 | { |
411e1bfb | 7724 | struct ppc_link_hash_table *htab; |
9e7028aa | 7725 | struct elf_link_hash_entry *tga, *tga_fd, *desc, *desc_fd; |
411e1bfb | 7726 | |
411e1bfb | 7727 | htab = ppc_hash_table (info); |
4dfe6ac6 | 7728 | if (htab == NULL) |
c9405344 | 7729 | return FALSE; |
4dfe6ac6 | 7730 | |
ee67d69a AM |
7731 | if (abiversion (info->output_bfd) == 1) |
7732 | htab->opd_abi = 1; | |
7733 | ||
e7d1c40c | 7734 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7735 | htab->do_multi_toc = 0; |
7736 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7737 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7738 | |
8b5f1ed8 AM |
7739 | /* Default to --no-plt-localentry, as this option can cause problems |
7740 | with symbol interposition. For example, glibc libpthread.so and | |
7741 | libc.so duplicate many pthread symbols, with a fallback | |
7742 | implementation in libc.so. In some cases the fallback does more | |
7743 | work than the pthread implementation. __pthread_condattr_destroy | |
7744 | is one such symbol: the libpthread.so implementation is | |
7745 | localentry:0 while the libc.so implementation is localentry:8. | |
7746 | An app that "cleverly" uses dlopen to only load necessary | |
7747 | libraries at runtime may omit loading libpthread.so when not | |
7748 | running multi-threaded, which then results in the libc.so | |
7749 | fallback symbols being used and ld.so complaining. Now there | |
7750 | are workarounds in ld (see non_zero_localentry) to detect the | |
7751 | pthread situation, but that may not be the only case where | |
7752 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7753 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7754 | htab->params->plt_localentry0 = 0; |
3cd7c7d7 AM |
7755 | if (htab->params->plt_localentry0 && htab->has_power10_relocs) |
7756 | { | |
7757 | /* The issue is that __glink_PLTresolve saves r2, which is done | |
7758 | because glibc ld.so _dl_runtime_resolve restores r2 to support | |
7759 | a glibc plt call optimisation where global entry code is | |
7760 | skipped on calls that resolve to the same binary. The | |
7761 | __glink_PLTresolve save of r2 is incompatible with code | |
7762 | making tail calls, because the tail call might go via the | |
7763 | resolver and thus overwrite the proper saved r2. */ | |
7764 | _bfd_error_handler (_("warning: --plt-localentry is incompatible with " | |
7765 | "power10 pc-relative code")); | |
7766 | htab->params->plt_localentry0 = 0; | |
7767 | } | |
d44c746a AM |
7768 | if (htab->params->plt_localentry0 |
7769 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7770 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7771 | _bfd_error_handler |
7772 | (_("warning: --plt-localentry is especially dangerous without " | |
7773 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7774 | |
9e7028aa AM |
7775 | tga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
7776 | FALSE, FALSE, TRUE); | |
7777 | htab->tls_get_addr = ppc_elf_hash_entry (tga); | |
7778 | ||
a7f2871e | 7779 | /* Move dynamic linking info to the function descriptor sym. */ |
9e7028aa AM |
7780 | if (tga != NULL) |
7781 | func_desc_adjust (tga, info); | |
7782 | tga_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7783 | FALSE, FALSE, TRUE); | |
7784 | htab->tls_get_addr_fd = ppc_elf_hash_entry (tga_fd); | |
7785 | ||
7786 | desc = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_desc", | |
7787 | FALSE, FALSE, TRUE); | |
7788 | htab->tga_desc = ppc_elf_hash_entry (desc); | |
7789 | if (desc != NULL) | |
7790 | func_desc_adjust (desc, info); | |
7791 | desc_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_desc", | |
7792 | FALSE, FALSE, TRUE); | |
7793 | htab->tga_desc_fd = ppc_elf_hash_entry (desc_fd); | |
7794 | ||
7c9cf415 | 7795 | if (htab->params->tls_get_addr_opt) |
a7f2871e | 7796 | { |
9e7028aa | 7797 | struct elf_link_hash_entry *opt, *opt_fd; |
a7f2871e AM |
7798 | |
7799 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7800 | FALSE, FALSE, TRUE); | |
7801 | if (opt != NULL) | |
7802 | func_desc_adjust (opt, info); | |
7803 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7804 | FALSE, FALSE, TRUE); | |
7805 | if (opt_fd != NULL | |
7806 | && (opt_fd->root.type == bfd_link_hash_defined | |
7807 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7808 | { | |
7809 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7810 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7811 | be calling __tls_get_addr via a plt call stub, then | |
7812 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
9e7028aa AM |
7813 | if (!(htab->elf.dynamic_sections_created |
7814 | && tga_fd != NULL | |
7815 | && (tga_fd->type == STT_FUNC | |
7816 | || tga_fd->needs_plt) | |
7817 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7818 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))) | |
7819 | tga_fd = NULL; | |
7820 | if (!(htab->elf.dynamic_sections_created | |
7821 | && desc_fd != NULL | |
7822 | && (desc_fd->type == STT_FUNC | |
7823 | || desc_fd->needs_plt) | |
7824 | && !(SYMBOL_CALLS_LOCAL (info, desc_fd) | |
7825 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, desc_fd)))) | |
7826 | desc_fd = NULL; | |
7827 | ||
7828 | if (tga_fd != NULL || desc_fd != NULL) | |
7829 | { | |
7830 | struct plt_entry *ent = NULL; | |
7831 | ||
7832 | if (tga_fd != NULL) | |
7833 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7834 | if (ent->plt.refcount > 0) | |
7835 | break; | |
7836 | if (ent == NULL && desc_fd != NULL) | |
7837 | for (ent = desc_fd->plt.plist; ent != NULL; ent = ent->next) | |
7838 | if (ent->plt.refcount > 0) | |
7839 | break; | |
a7f2871e AM |
7840 | if (ent != NULL) |
7841 | { | |
9e7028aa AM |
7842 | if (tga_fd != NULL) |
7843 | { | |
7844 | tga_fd->root.type = bfd_link_hash_indirect; | |
7845 | tga_fd->root.u.i.link = &opt_fd->root; | |
7846 | tga_fd->root.u.i.warning = NULL; | |
7847 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7848 | } | |
7849 | if (desc_fd != NULL) | |
7850 | { | |
7851 | desc_fd->root.type = bfd_link_hash_indirect; | |
7852 | desc_fd->root.u.i.link = &opt_fd->root; | |
7853 | desc_fd->root.u.i.warning = NULL; | |
7854 | ppc64_elf_copy_indirect_symbol (info, opt_fd, desc_fd); | |
7855 | } | |
b531344c | 7856 | opt_fd->mark = 1; |
a7f2871e AM |
7857 | if (opt_fd->dynindx != -1) |
7858 | { | |
7859 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7860 | opt_fd->dynindx = -1; | |
7861 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7862 | opt_fd->dynstr_index); | |
7863 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
c9405344 | 7864 | return FALSE; |
a7f2871e | 7865 | } |
9e7028aa | 7866 | if (tga_fd != NULL) |
a7f2871e | 7867 | { |
9e7028aa | 7868 | htab->tls_get_addr_fd = ppc_elf_hash_entry (opt_fd); |
30845f11 | 7869 | tga = elf_hash_entry (htab->tls_get_addr); |
9e7028aa AM |
7870 | if (opt != NULL && tga != NULL) |
7871 | { | |
7872 | tga->root.type = bfd_link_hash_indirect; | |
7873 | tga->root.u.i.link = &opt->root; | |
7874 | tga->root.u.i.warning = NULL; | |
7875 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7876 | opt->mark = 1; | |
7877 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7878 | tga->forced_local); | |
7879 | htab->tls_get_addr = ppc_elf_hash_entry (opt); | |
7880 | } | |
7881 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7882 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7883 | if (htab->tls_get_addr != NULL) | |
7884 | { | |
7885 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7886 | htab->tls_get_addr->is_func = 1; | |
7887 | } | |
a7f2871e | 7888 | } |
9e7028aa | 7889 | if (desc_fd != NULL) |
a7f2871e | 7890 | { |
9e7028aa AM |
7891 | htab->tga_desc_fd = ppc_elf_hash_entry (opt_fd); |
7892 | if (opt != NULL && desc != NULL) | |
7893 | { | |
7894 | desc->root.type = bfd_link_hash_indirect; | |
7895 | desc->root.u.i.link = &opt->root; | |
7896 | desc->root.u.i.warning = NULL; | |
7897 | ppc64_elf_copy_indirect_symbol (info, opt, desc); | |
7898 | opt->mark = 1; | |
7899 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7900 | desc->forced_local); | |
7901 | htab->tga_desc = ppc_elf_hash_entry (opt); | |
7902 | } | |
7903 | htab->tga_desc_fd->oh = htab->tga_desc; | |
7904 | htab->tga_desc_fd->is_func_descriptor = 1; | |
7905 | if (htab->tga_desc != NULL) | |
7906 | { | |
7907 | htab->tga_desc->oh = htab->tga_desc_fd; | |
7908 | htab->tga_desc->is_func = 1; | |
7909 | } | |
a7f2871e AM |
7910 | } |
7911 | } | |
7912 | } | |
7913 | } | |
7c9cf415 AM |
7914 | else if (htab->params->tls_get_addr_opt < 0) |
7915 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7916 | } |
9e7028aa AM |
7917 | |
7918 | if (htab->tga_desc_fd != NULL | |
7919 | && htab->params->tls_get_addr_opt | |
7920 | && htab->params->no_tls_get_addr_regsave == -1) | |
7921 | htab->params->no_tls_get_addr_regsave = 0; | |
7922 | ||
c9405344 | 7923 | return TRUE; |
3a71aa26 | 7924 | } |
8387904d | 7925 | |
3a71aa26 | 7926 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
9e7028aa | 7927 | any of HASH1, HASH2, HASH3, or HASH4. */ |
8387904d | 7928 | |
3a71aa26 | 7929 | static bfd_boolean |
30845f11 AM |
7930 | branch_reloc_hash_match (bfd *ibfd, |
7931 | Elf_Internal_Rela *rel, | |
7932 | struct ppc_link_hash_entry *hash1, | |
7933 | struct ppc_link_hash_entry *hash2, | |
7934 | struct ppc_link_hash_entry *hash3, | |
7935 | struct ppc_link_hash_entry *hash4) | |
3a71aa26 AM |
7936 | { |
7937 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7938 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7939 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7940 | ||
e054468f | 7941 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7942 | { |
3a71aa26 AM |
7943 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7944 | struct elf_link_hash_entry *h; | |
8387904d | 7945 | |
3a71aa26 | 7946 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7947 | h = elf_follow_link (h); |
30845f11 AM |
7948 | if (h == elf_hash_entry (hash1) |
7949 | || h == elf_hash_entry (hash2) | |
7950 | || h == elf_hash_entry (hash3) | |
7951 | || h == elf_hash_entry (hash4)) | |
3a71aa26 | 7952 | return TRUE; |
a48ebf4d | 7953 | } |
3a71aa26 | 7954 | return FALSE; |
951fd09b | 7955 | } |
411e1bfb | 7956 | |
951fd09b AM |
7957 | /* Run through all the TLS relocs looking for optimization |
7958 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7959 | a preliminary section layout so that we know the TLS segment | |
7960 | offsets. We can't optimize earlier because some optimizations need | |
7961 | to know the tp offset, and we need to optimize before allocating | |
7962 | dynamic relocations. */ | |
7963 | ||
7964 | bfd_boolean | |
33c0ec9d | 7965 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7966 | { |
7967 | bfd *ibfd; | |
7968 | asection *sec; | |
7969 | struct ppc_link_hash_table *htab; | |
663a1470 | 7970 | unsigned char *toc_ref; |
102890f0 | 7971 | int pass; |
951fd09b | 7972 | |
3cbc1e5e | 7973 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7974 | return TRUE; |
7975 | ||
951fd09b | 7976 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7977 | if (htab == NULL) |
7978 | return FALSE; | |
7979 | ||
252dcdf4 AM |
7980 | htab->do_tls_opt = 1; |
7981 | ||
663a1470 AM |
7982 | /* Make two passes over the relocs. On the first pass, mark toc |
7983 | entries involved with tls relocs, and check that tls relocs | |
7984 | involved in setting up a tls_get_addr call are indeed followed by | |
7985 | such a call. If they are not, we can't do any tls optimization. | |
7986 | On the second pass twiddle tls_mask flags to notify | |
7987 | relocate_section that optimization can be done, and adjust got | |
7988 | and plt refcounts. */ | |
7989 | toc_ref = NULL; | |
7990 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7991 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7992 | { |
7993 | Elf_Internal_Sym *locsyms = NULL; | |
7994 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7995 | ||
102890f0 AM |
7996 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7997 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7998 | { | |
7999 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8000 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8001 | |
102890f0 AM |
8002 | /* Read the relocations. */ |
8003 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8004 | info->keep_memory); | |
8005 | if (relstart == NULL) | |
2915c55b JK |
8006 | { |
8007 | free (toc_ref); | |
8008 | return FALSE; | |
8009 | } | |
411e1bfb | 8010 | |
102890f0 AM |
8011 | relend = relstart + sec->reloc_count; |
8012 | for (rel = relstart; rel < relend; rel++) | |
8013 | { | |
8014 | enum elf_ppc64_reloc_type r_type; | |
8015 | unsigned long r_symndx; | |
8016 | struct elf_link_hash_entry *h; | |
8017 | Elf_Internal_Sym *sym; | |
8018 | asection *sym_sec; | |
f961d9dd | 8019 | unsigned char *tls_mask; |
46e9995a | 8020 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 AM |
8021 | bfd_vma value; |
8022 | bfd_boolean ok_tprel, is_local; | |
8023 | long toc_ref_index = 0; | |
8024 | int expecting_tls_get_addr = 0; | |
663a1470 | 8025 | bfd_boolean ret = FALSE; |
411e1bfb | 8026 | |
102890f0 AM |
8027 | r_symndx = ELF64_R_SYM (rel->r_info); |
8028 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8029 | r_symndx, ibfd)) | |
8030 | { | |
8031 | err_free_rel: | |
8032 | if (elf_section_data (sec)->relocs != relstart) | |
8033 | free (relstart); | |
c9594989 AM |
8034 | free (toc_ref); |
8035 | if (elf_symtab_hdr (ibfd).contents | |
8036 | != (unsigned char *) locsyms) | |
102890f0 | 8037 | free (locsyms); |
663a1470 | 8038 | return ret; |
102890f0 | 8039 | } |
411e1bfb | 8040 | |
102890f0 AM |
8041 | if (h != NULL) |
8042 | { | |
766bc656 AM |
8043 | if (h->root.type == bfd_link_hash_defined |
8044 | || h->root.type == bfd_link_hash_defweak) | |
8045 | value = h->root.u.def.value; | |
8046 | else if (h->root.type == bfd_link_hash_undefweak) | |
8047 | value = 0; | |
8048 | else | |
663a1470 AM |
8049 | { |
8050 | found_tls_get_addr_arg = 0; | |
8051 | continue; | |
8052 | } | |
102890f0 AM |
8053 | } |
8054 | else | |
8055 | /* Symbols referenced by TLS relocs must be of type | |
8056 | STT_TLS. So no need for .opd local sym adjust. */ | |
8057 | value = sym->st_value; | |
8058 | ||
8059 | ok_tprel = FALSE; | |
f749f26e AM |
8060 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
8061 | if (is_local) | |
102890f0 | 8062 | { |
766bc656 AM |
8063 | if (h != NULL |
8064 | && h->root.type == bfd_link_hash_undefweak) | |
8065 | ok_tprel = TRUE; | |
c27b8c2a AM |
8066 | else if (sym_sec != NULL |
8067 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8068 | { |
8069 | value += sym_sec->output_offset; | |
8070 | value += sym_sec->output_section->vma; | |
0b147428 | 8071 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
8072 | /* Note that even though the prefix insns |
8073 | allow a 1<<33 offset we use the same test | |
8074 | as for addis;addi. There may be a mix of | |
8075 | pcrel and non-pcrel code and the decision | |
8076 | to optimise is per symbol, not per TLS | |
8077 | sequence. */ | |
0b147428 | 8078 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 8079 | } |
102890f0 | 8080 | } |
951fd09b | 8081 | |
102890f0 | 8082 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8083 | /* If this section has old-style __tls_get_addr calls |
8084 | without marker relocs, then check that each | |
8085 | __tls_get_addr call reloc is preceded by a reloc | |
8086 | that conceivably belongs to the __tls_get_addr arg | |
8087 | setup insn. If we don't find matching arg setup | |
8088 | relocs, don't do any tls optimization. */ | |
8089 | if (pass == 0 | |
9737e8af | 8090 | && sec->nomark_tls_get_addr |
663a1470 | 8091 | && h != NULL |
ed7007c1 | 8092 | && is_tls_get_addr (h, htab) |
663a1470 AM |
8093 | && !found_tls_get_addr_arg |
8094 | && is_branch_reloc (r_type)) | |
8095 | { | |
25f53a85 | 8096 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8097 | "TLS optimization disabled\n"), |
8098 | ibfd, sec, rel->r_offset); | |
8099 | ret = TRUE; | |
8100 | goto err_free_rel; | |
8101 | } | |
8102 | ||
8103 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8104 | switch (r_type) |
8105 | { | |
8106 | case R_PPC64_GOT_TLSLD16: | |
8107 | case R_PPC64_GOT_TLSLD16_LO: | |
87c69f97 | 8108 | case R_PPC64_GOT_TLSLD_PCREL34: |
102890f0 | 8109 | expecting_tls_get_addr = 1; |
663a1470 | 8110 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8111 | /* Fall through. */ |
102890f0 AM |
8112 | |
8113 | case R_PPC64_GOT_TLSLD16_HI: | |
8114 | case R_PPC64_GOT_TLSLD16_HA: | |
8115 | /* These relocs should never be against a symbol | |
8116 | defined in a shared lib. Leave them alone if | |
8117 | that turns out to be the case. */ | |
8118 | if (!is_local) | |
8119 | continue; | |
411e1bfb | 8120 | |
102890f0 | 8121 | /* LD -> LE */ |
411e1bfb | 8122 | tls_set = 0; |
102890f0 AM |
8123 | tls_clear = TLS_LD; |
8124 | tls_type = TLS_TLS | TLS_LD; | |
8125 | break; | |
411e1bfb | 8126 | |
102890f0 AM |
8127 | case R_PPC64_GOT_TLSGD16: |
8128 | case R_PPC64_GOT_TLSGD16_LO: | |
87c69f97 | 8129 | case R_PPC64_GOT_TLSGD_PCREL34: |
102890f0 | 8130 | expecting_tls_get_addr = 1; |
663a1470 | 8131 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8132 | /* Fall through. */ |
102890f0 AM |
8133 | |
8134 | case R_PPC64_GOT_TLSGD16_HI: | |
8135 | case R_PPC64_GOT_TLSGD16_HA: | |
8136 | if (ok_tprel) | |
8137 | /* GD -> LE */ | |
411e1bfb | 8138 | tls_set = 0; |
102890f0 AM |
8139 | else |
8140 | /* GD -> IE */ | |
b00a0a86 | 8141 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
8142 | tls_clear = TLS_GD; |
8143 | tls_type = TLS_TLS | TLS_GD; | |
8144 | break; | |
8145 | ||
87c69f97 | 8146 | case R_PPC64_GOT_TPREL_PCREL34: |
102890f0 AM |
8147 | case R_PPC64_GOT_TPREL16_DS: |
8148 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8149 | case R_PPC64_GOT_TPREL16_HI: | |
8150 | case R_PPC64_GOT_TPREL16_HA: | |
8151 | if (ok_tprel) | |
8152 | { | |
8153 | /* IE -> LE */ | |
8154 | tls_set = 0; | |
8155 | tls_clear = TLS_TPREL; | |
8156 | tls_type = TLS_TLS | TLS_TPREL; | |
8157 | break; | |
8158 | } | |
411e1bfb AM |
8159 | continue; |
8160 | ||
727fc41e | 8161 | case R_PPC64_TLSLD: |
7d04a20a AM |
8162 | if (!is_local) |
8163 | continue; | |
8164 | /* Fall through. */ | |
8165 | case R_PPC64_TLSGD: | |
23cedd1d AM |
8166 | if (rel + 1 < relend |
8167 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8168 | { | |
8169 | if (pass != 0 | |
2cdcc330 | 8170 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
8171 | != R_PPC64_PLTSEQ) |
8172 | && (ELF64_R_TYPE (rel[1].r_info) | |
8173 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
8174 | { |
8175 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8176 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8177 | r_symndx, ibfd)) |
23cedd1d AM |
8178 | goto err_free_rel; |
8179 | if (h != NULL) | |
8180 | { | |
8181 | struct plt_entry *ent = NULL; | |
8182 | ||
8183 | for (ent = h->plt.plist; | |
8184 | ent != NULL; | |
8185 | ent = ent->next) | |
8186 | if (ent->addend == rel[1].r_addend) | |
8187 | break; | |
8188 | ||
8189 | if (ent != NULL | |
8190 | && ent->plt.refcount > 0) | |
8191 | ent->plt.refcount -= 1; | |
8192 | } | |
8193 | } | |
8194 | continue; | |
8195 | } | |
663a1470 | 8196 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8197 | /* Fall through. */ |
663a1470 AM |
8198 | |
8199 | case R_PPC64_TLS: | |
8200 | case R_PPC64_TOC16: | |
8201 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8202 | if (sym_sec == NULL || sym_sec != toc) |
8203 | continue; | |
8204 | ||
8205 | /* Mark this toc entry as referenced by a TLS | |
8206 | code sequence. We can do that now in the | |
8207 | case of R_PPC64_TLS, and after checking for | |
8208 | tls_get_addr for the TOC16 relocs. */ | |
8209 | if (toc_ref == NULL) | |
2cdcc330 AM |
8210 | toc_ref |
8211 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8212 | if (toc_ref == NULL) |
8213 | goto err_free_rel; | |
8214 | ||
102890f0 AM |
8215 | if (h != NULL) |
8216 | value = h->root.u.def.value; | |
8217 | else | |
8218 | value = sym->st_value; | |
8219 | value += rel->r_addend; | |
73242275 AM |
8220 | if (value % 8 != 0) |
8221 | continue; | |
8222 | BFD_ASSERT (value < toc->size | |
8223 | && toc->output_offset % 8 == 0); | |
663a1470 | 8224 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8225 | if (r_type == R_PPC64_TLS |
8226 | || r_type == R_PPC64_TLSGD | |
8227 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8228 | { |
8229 | toc_ref[toc_ref_index] = 1; | |
8230 | continue; | |
8231 | } | |
8232 | ||
8233 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8234 | continue; | |
8235 | ||
8236 | tls_set = 0; | |
8237 | tls_clear = 0; | |
8238 | expecting_tls_get_addr = 2; | |
8239 | break; | |
8240 | ||
8241 | case R_PPC64_TPREL64: | |
8242 | if (pass == 0 | |
8243 | || sec != toc | |
8244 | || toc_ref == NULL | |
663a1470 | 8245 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8246 | continue; |
8247 | if (ok_tprel) | |
8248 | { | |
8249 | /* IE -> LE */ | |
8250 | tls_set = TLS_EXPLICIT; | |
8251 | tls_clear = TLS_TPREL; | |
8252 | break; | |
8253 | } | |
8254 | continue; | |
8255 | ||
8256 | case R_PPC64_DTPMOD64: | |
8257 | if (pass == 0 | |
8258 | || sec != toc | |
8259 | || toc_ref == NULL | |
663a1470 | 8260 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8261 | continue; |
8262 | if (rel + 1 < relend | |
8263 | && (rel[1].r_info | |
8264 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8265 | && rel[1].r_offset == rel->r_offset + 8) | |
8266 | { | |
8267 | if (ok_tprel) | |
8268 | /* GD -> LE */ | |
8269 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8270 | else | |
8271 | /* GD -> IE */ | |
b00a0a86 | 8272 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8273 | tls_clear = TLS_GD; |
8274 | } | |
8275 | else | |
8276 | { | |
8277 | if (!is_local) | |
8278 | continue; | |
8279 | ||
8280 | /* LD -> LE */ | |
8281 | tls_set = TLS_EXPLICIT; | |
8282 | tls_clear = TLS_LD; | |
8283 | } | |
8284 | break; | |
8285 | ||
252dcdf4 AM |
8286 | case R_PPC64_TPREL16_HA: |
8287 | if (pass == 0) | |
8288 | { | |
8289 | unsigned char buf[4]; | |
8290 | unsigned int insn; | |
8291 | bfd_vma off = rel->r_offset & ~3; | |
8292 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
8293 | off, 4)) | |
8294 | goto err_free_rel; | |
8295 | insn = bfd_get_32 (ibfd, buf); | |
8296 | /* addis rt,13,imm */ | |
8297 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
8298 | != ((15u << 26) | (13 << 16))) | |
8299 | { | |
8300 | /* xgettext:c-format */ | |
8301 | info->callbacks->minfo | |
8302 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8303 | ibfd, sec, off, "R_PPC64_TPREL16_HA", insn); | |
8304 | htab->do_tls_opt = 0; | |
8305 | } | |
8306 | } | |
8307 | continue; | |
8308 | ||
8309 | case R_PPC64_TPREL16_HI: | |
8310 | case R_PPC64_TPREL16_HIGH: | |
8311 | case R_PPC64_TPREL16_HIGHA: | |
8312 | case R_PPC64_TPREL16_HIGHER: | |
8313 | case R_PPC64_TPREL16_HIGHERA: | |
8314 | case R_PPC64_TPREL16_HIGHEST: | |
8315 | case R_PPC64_TPREL16_HIGHESTA: | |
8316 | /* These can all be used in sequences along with | |
8317 | TPREL16_LO or TPREL16_LO_DS in ways we aren't | |
8318 | able to verify easily. */ | |
8319 | htab->do_tls_opt = 0; | |
8320 | continue; | |
8321 | ||
102890f0 AM |
8322 | default: |
8323 | continue; | |
8324 | } | |
8325 | ||
8326 | if (pass == 0) | |
8327 | { | |
727fc41e | 8328 | if (!expecting_tls_get_addr |
9737e8af | 8329 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8330 | continue; |
8331 | ||
3a71aa26 AM |
8332 | if (rel + 1 < relend |
8333 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9e7028aa AM |
8334 | htab->tls_get_addr_fd, |
8335 | htab->tga_desc_fd, | |
3a71aa26 | 8336 | htab->tls_get_addr, |
9e7028aa | 8337 | htab->tga_desc)) |
102890f0 | 8338 | { |
3a71aa26 | 8339 | if (expecting_tls_get_addr == 2) |
102890f0 | 8340 | { |
3a71aa26 | 8341 | /* Check for toc tls entries. */ |
f961d9dd | 8342 | unsigned char *toc_tls; |
3a71aa26 AM |
8343 | int retval; |
8344 | ||
8345 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8346 | &locsyms, | |
8347 | rel, ibfd); | |
8348 | if (retval == 0) | |
8349 | goto err_free_rel; | |
663a1470 AM |
8350 | if (toc_tls != NULL) |
8351 | { | |
37da22e5 AM |
8352 | if ((*toc_tls & TLS_TLS) != 0 |
8353 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8354 | found_tls_get_addr_arg = 1; |
8355 | if (retval > 1) | |
8356 | toc_ref[toc_ref_index] = 1; | |
8357 | } | |
102890f0 | 8358 | } |
3a71aa26 | 8359 | continue; |
102890f0 AM |
8360 | } |
8361 | ||
102890f0 AM |
8362 | /* Uh oh, we didn't find the expected call. We |
8363 | could just mark this symbol to exclude it | |
8364 | from tls optimization but it's safer to skip | |
663a1470 | 8365 | the entire optimization. */ |
695344c0 | 8366 | /* xgettext:c-format */ |
25f53a85 | 8367 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8368 | "TLS optimization disabled\n"), |
8369 | ibfd, sec, rel->r_offset); | |
8370 | ret = TRUE; | |
8371 | goto err_free_rel; | |
102890f0 AM |
8372 | } |
8373 | ||
37da22e5 AM |
8374 | /* If we don't have old-style __tls_get_addr calls |
8375 | without TLSGD/TLSLD marker relocs, and we haven't | |
8376 | found a new-style __tls_get_addr call with a | |
8377 | marker for this symbol, then we either have a | |
8378 | broken object file or an -mlongcall style | |
8379 | indirect call to __tls_get_addr without a marker. | |
8380 | Disable optimization in this case. */ | |
8381 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8382 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8383 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8384 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8385 | != (TLS_TLS | TLS_MARK))) | |
8386 | continue; | |
8387 | ||
7d04a20a | 8388 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8389 | { |
23cedd1d AM |
8390 | struct plt_entry *ent = NULL; |
8391 | ||
9e7028aa AM |
8392 | if (htab->tls_get_addr_fd != NULL) |
8393 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8394 | ent != NULL; | |
8395 | ent = ent->next) | |
8396 | if (ent->addend == 0) | |
8397 | break; | |
8398 | ||
8399 | if (ent == NULL && htab->tga_desc_fd != NULL) | |
8400 | for (ent = htab->tga_desc_fd->elf.plt.plist; | |
8401 | ent != NULL; | |
8402 | ent = ent->next) | |
8403 | if (ent->addend == 0) | |
8404 | break; | |
8405 | ||
8406 | if (ent == NULL && htab->tls_get_addr != NULL) | |
23cedd1d AM |
8407 | for (ent = htab->tls_get_addr->elf.plt.plist; |
8408 | ent != NULL; | |
8409 | ent = ent->next) | |
8410 | if (ent->addend == 0) | |
102890f0 | 8411 | break; |
411e1bfb | 8412 | |
9e7028aa AM |
8413 | if (ent == NULL && htab->tga_desc != NULL) |
8414 | for (ent = htab->tga_desc->elf.plt.plist; | |
23cedd1d AM |
8415 | ent != NULL; |
8416 | ent = ent->next) | |
8417 | if (ent->addend == 0) | |
102890f0 | 8418 | break; |
23cedd1d AM |
8419 | |
8420 | if (ent != NULL | |
8421 | && ent->plt.refcount > 0) | |
8422 | ent->plt.refcount -= 1; | |
102890f0 | 8423 | } |
411e1bfb | 8424 | |
102890f0 | 8425 | if (tls_clear == 0) |
30038c59 AM |
8426 | continue; |
8427 | ||
102890f0 AM |
8428 | if ((tls_set & TLS_EXPLICIT) == 0) |
8429 | { | |
8430 | struct got_entry *ent; | |
411e1bfb | 8431 | |
102890f0 AM |
8432 | /* Adjust got entry for this reloc. */ |
8433 | if (h != NULL) | |
8434 | ent = h->got.glist; | |
8435 | else | |
8436 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8437 | |
102890f0 AM |
8438 | for (; ent != NULL; ent = ent->next) |
8439 | if (ent->addend == rel->r_addend | |
8440 | && ent->owner == ibfd | |
8441 | && ent->tls_type == tls_type) | |
8442 | break; | |
8443 | if (ent == NULL) | |
8444 | abort (); | |
411e1bfb | 8445 | |
102890f0 AM |
8446 | if (tls_set == 0) |
8447 | { | |
8448 | /* We managed to get rid of a got entry. */ | |
8449 | if (ent->got.refcount > 0) | |
8450 | ent->got.refcount -= 1; | |
8451 | } | |
8452 | } | |
8453 | else | |
8454 | { | |
8455 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8456 | we'll lose one or two dyn relocs. */ | |
8457 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8458 | NULL, h, sym)) |
102890f0 | 8459 | return FALSE; |
411e1bfb | 8460 | |
102890f0 AM |
8461 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8462 | { | |
8463 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8464 | NULL, h, sym)) |
102890f0 AM |
8465 | return FALSE; |
8466 | } | |
8467 | } | |
411e1bfb | 8468 | |
46e9995a | 8469 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8470 | *tls_mask &= ~tls_clear; |
8471 | } | |
8c1d1bb8 | 8472 | |
102890f0 AM |
8473 | if (elf_section_data (sec)->relocs != relstart) |
8474 | free (relstart); | |
8475 | } | |
411e1bfb | 8476 | |
663a1470 AM |
8477 | if (locsyms != NULL |
8478 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8479 | { | |
8480 | if (!info->keep_memory) | |
8481 | free (locsyms); | |
8482 | else | |
8483 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8484 | } | |
8485 | } | |
411e1bfb | 8486 | |
c9594989 | 8487 | free (toc_ref); |
b34976b6 | 8488 | return TRUE; |
1e2f5b6e | 8489 | } |
b34976b6 | 8490 | |
c5614fa4 AM |
8491 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8492 | the values of any global symbols in a toc section that has been | |
8493 | edited. Globals in toc sections should be a rarity, so this function | |
8494 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8495 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8496 | |
8497 | struct adjust_toc_info | |
8498 | { | |
8499 | asection *toc; | |
8500 | unsigned long *skip; | |
8501 | bfd_boolean global_toc_syms; | |
8502 | }; | |
8503 | ||
ba761f19 AM |
8504 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8505 | ||
c5614fa4 AM |
8506 | static bfd_boolean |
8507 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8508 | { | |
8509 | struct ppc_link_hash_entry *eh; | |
8510 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8511 | unsigned long i; |
c5614fa4 | 8512 | |
c5614fa4 AM |
8513 | if (h->root.type != bfd_link_hash_defined |
8514 | && h->root.type != bfd_link_hash_defweak) | |
8515 | return TRUE; | |
8516 | ||
ed7007c1 | 8517 | eh = ppc_elf_hash_entry (h); |
c5614fa4 AM |
8518 | if (eh->adjust_done) |
8519 | return TRUE; | |
8520 | ||
8521 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8522 | { | |
854b41e7 AM |
8523 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8524 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8525 | else |
854b41e7 AM |
8526 | i = eh->elf.root.u.def.value >> 3; |
8527 | ||
ba761f19 | 8528 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8529 | { |
4eca0228 | 8530 | _bfd_error_handler |
854b41e7 AM |
8531 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8532 | do | |
8533 | ++i; | |
ba761f19 | 8534 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8535 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8536 | } |
854b41e7 AM |
8537 | |
8538 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8539 | eh->adjust_done = 1; |
8540 | } | |
8541 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8542 | toc_inf->global_toc_syms = TRUE; | |
8543 | ||
8544 | return TRUE; | |
8545 | } | |
8546 | ||
39eeab25 AM |
8547 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8548 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8549 | |
8550 | static bfd_boolean | |
39eeab25 | 8551 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8552 | { |
2365f8d7 AM |
8553 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8554 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8555 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8556 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8557 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8558 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8559 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8560 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8561 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8562 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8563 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8564 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8565 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8566 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8567 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8568 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8569 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8570 | /* Exclude lfqu by testing reloc. If relocs are ever |
8571 | defined for the reduced D field in psq_lu then those | |
8572 | will need testing too. */ | |
8573 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8574 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8575 | && (insn & 1) == 0) |
2365f8d7 AM |
8576 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8577 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8578 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8579 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8580 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8581 | && (insn & 1) == 0)); |
560c8763 AM |
8582 | } |
8583 | ||
4a421c53 AM |
8584 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8585 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8586 | load/store rt,off(ra) |
4a421c53 | 8587 | or |
d4b87b1e | 8588 | pla ra,symbol@pcrel |
dd9b12c2 | 8589 | load/store rt,off(ra) |
4a421c53 | 8590 | may be translated to |
dd9b12c2 | 8591 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8592 | nop. |
8593 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8594 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8595 | |
8596 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8597 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8598 | while *PINSN2 is the second instruction. */ |
8599 | ||
8600 | static bfd_boolean | |
dd9b12c2 | 8601 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8602 | { |
77486630 AM |
8603 | uint64_t insn1 = *pinsn1; |
8604 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8605 | bfd_signed_vma off; |
4a421c53 | 8606 | |
77486630 AM |
8607 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8608 | { | |
8609 | /* Check that regs match. */ | |
8610 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
8611 | return FALSE; | |
8612 | ||
8613 | /* P8LS or PMLS form, non-pcrel. */ | |
8614 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
8615 | return FALSE; | |
8616 | ||
8617 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8618 | *pinsn2 = PNOP; | |
8619 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8620 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
8621 | return TRUE; | |
8622 | } | |
8623 | ||
8624 | insn2 >>= 32; | |
8625 | ||
4a421c53 | 8626 | /* Check that regs match. */ |
77486630 | 8627 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
4a421c53 AM |
8628 | return FALSE; |
8629 | ||
8630 | switch ((insn2 >> 26) & 63) | |
8631 | { | |
8632 | default: | |
8633 | return FALSE; | |
8634 | ||
8635 | case 32: /* lwz */ | |
8636 | case 34: /* lbz */ | |
8637 | case 36: /* stw */ | |
8638 | case 38: /* stb */ | |
8639 | case 40: /* lhz */ | |
8640 | case 42: /* lha */ | |
8641 | case 44: /* sth */ | |
8642 | case 48: /* lfs */ | |
8643 | case 50: /* lfd */ | |
8644 | case 52: /* stfs */ | |
8645 | case 54: /* stfd */ | |
8646 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8647 | on the insn. */ |
77486630 | 8648 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8649 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8650 | off = insn2 & 0xffff; |
4a421c53 AM |
8651 | break; |
8652 | ||
8653 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8654 | if ((insn2 & 1) != 0) |
4a421c53 | 8655 | return FALSE; |
77486630 | 8656 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8657 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8658 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8659 | off = insn2 & 0xfffc; |
4a421c53 AM |
8660 | break; |
8661 | ||
8662 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8663 | if ((insn2 & 3) < 2) |
4a421c53 | 8664 | return FALSE; |
77486630 | 8665 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8666 | | ((40ULL | (insn2 & 3)) << 26) |
8667 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8668 | off = insn2 & 0xfffc; |
4a421c53 AM |
8669 | break; |
8670 | ||
8671 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8672 | if ((insn2 & 3) == 0) | |
8673 | return FALSE; | |
8674 | else if ((insn2 & 3) >= 2) | |
8675 | { | |
77486630 | 8676 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8677 | | ((44ULL | (insn2 & 3)) << 26) |
8678 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8679 | off = insn2 & 0xfffc; |
4a421c53 AM |
8680 | } |
8681 | else | |
8682 | { | |
77486630 | 8683 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8684 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8685 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8686 | off = insn2 & 0xfff0; |
4a421c53 AM |
8687 | } |
8688 | break; | |
8689 | ||
8690 | case 56: /* lq */ | |
77486630 | 8691 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8692 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8693 | off = insn2 & 0xffff; |
4a421c53 AM |
8694 | break; |
8695 | ||
94ba9882 AM |
8696 | case 6: /* lxvp, stxvp */ |
8697 | if ((insn2 & 0xe) != 0) | |
8698 | return FALSE; | |
8699 | insn1 = ((1ULL << 58) | (1ULL << 52) | |
8700 | | ((insn2 & 1) == 0 ? 58ULL << 26 : 62ULL << 26) | |
8701 | | (insn2 & (31ULL << 21))); | |
8702 | off = insn2 & 0xfff0; | |
8703 | break; | |
8704 | ||
4a421c53 | 8705 | case 62: /* std, stq */ |
dd9b12c2 | 8706 | if ((insn2 & 1) != 0) |
4a421c53 | 8707 | return FALSE; |
77486630 | 8708 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8709 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8710 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8711 | off = insn2 & 0xfffc; |
4a421c53 AM |
8712 | break; |
8713 | } | |
8714 | ||
77486630 | 8715 | *pinsn1 = insn1; |
4a421c53 | 8716 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8717 | *poff = (off ^ 0x8000) - 0x8000; |
4a421c53 AM |
8718 | return TRUE; |
8719 | } | |
8720 | ||
c5614fa4 AM |
8721 | /* Examine all relocs referencing .toc sections in order to remove |
8722 | unused .toc entries. */ | |
8723 | ||
8724 | bfd_boolean | |
33c0ec9d | 8725 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8726 | { |
8727 | bfd *ibfd; | |
8728 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8729 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8730 | |
67f0cbdb | 8731 | htab->do_toc_opt = 1; |
c5614fa4 | 8732 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8733 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8734 | { |
8735 | asection *toc, *sec; | |
8736 | Elf_Internal_Shdr *symtab_hdr; | |
8737 | Elf_Internal_Sym *local_syms; | |
425b145b | 8738 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8739 | unsigned long *skip, *drop; |
8740 | unsigned char *used; | |
8741 | unsigned char *keep, last, some_unused; | |
8742 | ||
854b41e7 AM |
8743 | if (!is_ppc64_elf (ibfd)) |
8744 | continue; | |
8745 | ||
c5614fa4 AM |
8746 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8747 | if (toc == NULL | |
92b7a70f | 8748 | || toc->size == 0 |
dbaa2011 AM |
8749 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8750 | || discarded_section (toc)) | |
c5614fa4 AM |
8751 | continue; |
8752 | ||
425b145b | 8753 | toc_relocs = NULL; |
c5614fa4 | 8754 | local_syms = NULL; |
0ffa91dd | 8755 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8756 | |
8757 | /* Look at sections dropped from the final link. */ | |
8758 | skip = NULL; | |
8759 | relstart = NULL; | |
8760 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8761 | { | |
8762 | if (sec->reloc_count == 0 | |
dbaa2011 | 8763 | || !discarded_section (sec) |
c5614fa4 AM |
8764 | || get_opd_info (sec) |
8765 | || (sec->flags & SEC_ALLOC) == 0 | |
8766 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8767 | continue; | |
8768 | ||
8769 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8770 | if (relstart == NULL) | |
8771 | goto error_ret; | |
8772 | ||
8773 | /* Run through the relocs to see which toc entries might be | |
8774 | unused. */ | |
8775 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8776 | { | |
8777 | enum elf_ppc64_reloc_type r_type; | |
8778 | unsigned long r_symndx; | |
8779 | asection *sym_sec; | |
8780 | struct elf_link_hash_entry *h; | |
8781 | Elf_Internal_Sym *sym; | |
8782 | bfd_vma val; | |
8783 | ||
8784 | r_type = ELF64_R_TYPE (rel->r_info); | |
8785 | switch (r_type) | |
8786 | { | |
8787 | default: | |
8788 | continue; | |
8789 | ||
8790 | case R_PPC64_TOC16: | |
8791 | case R_PPC64_TOC16_LO: | |
8792 | case R_PPC64_TOC16_HI: | |
8793 | case R_PPC64_TOC16_HA: | |
8794 | case R_PPC64_TOC16_DS: | |
8795 | case R_PPC64_TOC16_LO_DS: | |
8796 | break; | |
8797 | } | |
8798 | ||
8799 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8800 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8801 | r_symndx, ibfd)) | |
8802 | goto error_ret; | |
8803 | ||
8804 | if (sym_sec != toc) | |
8805 | continue; | |
8806 | ||
8807 | if (h != NULL) | |
8808 | val = h->root.u.def.value; | |
8809 | else | |
8810 | val = sym->st_value; | |
8811 | val += rel->r_addend; | |
8812 | ||
8813 | if (val >= toc->size) | |
8814 | continue; | |
8815 | ||
8816 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8817 | If not, don't mark as unused. */ | |
8818 | if (val & 7) | |
8819 | continue; | |
8820 | ||
8821 | if (skip == NULL) | |
8822 | { | |
854b41e7 | 8823 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8824 | if (skip == NULL) |
8825 | goto error_ret; | |
8826 | } | |
8827 | ||
ba761f19 | 8828 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8829 | } |
8830 | ||
8831 | if (elf_section_data (sec)->relocs != relstart) | |
8832 | free (relstart); | |
8833 | } | |
8834 | ||
ba761f19 AM |
8835 | /* For largetoc loads of address constants, we can convert |
8836 | . addis rx,2,addr@got@ha | |
8837 | . ld ry,addr@got@l(rx) | |
8838 | to | |
8839 | . addis rx,2,addr@toc@ha | |
8840 | . addi ry,rx,addr@toc@l | |
8841 | when addr is within 2G of the toc pointer. This then means | |
8842 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8843 | |
ba761f19 AM |
8844 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8845 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8846 | && toc->reloc_count != 0) | |
8847 | { | |
8848 | /* Read toc relocs. */ | |
425b145b AM |
8849 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8850 | info->keep_memory); | |
8851 | if (toc_relocs == NULL) | |
ba761f19 AM |
8852 | goto error_ret; |
8853 | ||
425b145b | 8854 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8855 | { |
8856 | enum elf_ppc64_reloc_type r_type; | |
8857 | unsigned long r_symndx; | |
8858 | asection *sym_sec; | |
8859 | struct elf_link_hash_entry *h; | |
8860 | Elf_Internal_Sym *sym; | |
8861 | bfd_vma val, addr; | |
8862 | ||
8863 | r_type = ELF64_R_TYPE (rel->r_info); | |
8864 | if (r_type != R_PPC64_ADDR64) | |
8865 | continue; | |
8866 | ||
8867 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8868 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8869 | r_symndx, ibfd)) | |
8870 | goto error_ret; | |
8871 | ||
425b145b | 8872 | if (sym_sec == NULL |
c27b8c2a | 8873 | || sym_sec->output_section == NULL |
dbaa2011 | 8874 | || discarded_section (sym_sec)) |
425b145b AM |
8875 | continue; |
8876 | ||
afe397ea | 8877 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8878 | continue; |
8879 | ||
8880 | if (h != NULL) | |
bddc25c9 AM |
8881 | { |
8882 | if (h->type == STT_GNU_IFUNC) | |
8883 | continue; | |
8884 | val = h->root.u.def.value; | |
8885 | } | |
ba761f19 | 8886 | else |
bddc25c9 AM |
8887 | { |
8888 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8889 | continue; | |
8890 | val = sym->st_value; | |
8891 | } | |
ba761f19 AM |
8892 | val += rel->r_addend; |
8893 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8894 | ||
8895 | /* We don't yet know the exact toc pointer value, but we | |
8896 | know it will be somewhere in the toc section. Don't | |
8897 | optimize if the difference from any possible toc | |
8898 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8899 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8900 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8901 | continue; | |
8902 | ||
8903 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8904 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8905 | continue; | |
8906 | ||
8907 | if (skip == NULL) | |
8908 | { | |
8909 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8910 | if (skip == NULL) | |
8911 | goto error_ret; | |
8912 | } | |
8913 | ||
8914 | skip[rel->r_offset >> 3] | |
425b145b | 8915 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8916 | } |
ba761f19 AM |
8917 | } |
8918 | ||
c5614fa4 AM |
8919 | if (skip == NULL) |
8920 | continue; | |
8921 | ||
8922 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8923 | if (used == NULL) | |
8924 | { | |
8925 | error_ret: | |
c9594989 | 8926 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
c5614fa4 AM |
8927 | free (local_syms); |
8928 | if (sec != NULL | |
c5614fa4 AM |
8929 | && elf_section_data (sec)->relocs != relstart) |
8930 | free (relstart); | |
c9594989 | 8931 | if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 8932 | free (toc_relocs); |
c9594989 | 8933 | free (skip); |
c5614fa4 AM |
8934 | return FALSE; |
8935 | } | |
8936 | ||
30038c59 AM |
8937 | /* Now check all kept sections that might reference the toc. |
8938 | Check the toc itself last. */ | |
8939 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8940 | : ibfd->sections); | |
c5614fa4 | 8941 | sec != NULL; |
c5614fa4 | 8942 | sec = (sec == toc ? NULL |
c5614fa4 | 8943 | : sec->next == NULL ? toc |
30038c59 | 8944 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8945 | : sec->next)) |
8946 | { | |
8947 | int repeat; | |
8948 | ||
8949 | if (sec->reloc_count == 0 | |
dbaa2011 | 8950 | || discarded_section (sec) |
c5614fa4 AM |
8951 | || get_opd_info (sec) |
8952 | || (sec->flags & SEC_ALLOC) == 0 | |
8953 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8954 | continue; | |
8955 | ||
854b41e7 AM |
8956 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8957 | info->keep_memory); | |
c5614fa4 | 8958 | if (relstart == NULL) |
2915c55b JK |
8959 | { |
8960 | free (used); | |
8961 | goto error_ret; | |
8962 | } | |
c5614fa4 AM |
8963 | |
8964 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8965 | do |
d4f1ee75 AM |
8966 | { |
8967 | repeat = 0; | |
8968 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8969 | { | |
8970 | enum elf_ppc64_reloc_type r_type; | |
8971 | unsigned long r_symndx; | |
8972 | asection *sym_sec; | |
8973 | struct elf_link_hash_entry *h; | |
8974 | Elf_Internal_Sym *sym; | |
8975 | bfd_vma val; | |
98528052 | 8976 | |
d4f1ee75 | 8977 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
8978 | switch (r_type) |
8979 | { | |
8980 | case R_PPC64_TOC16: | |
8981 | case R_PPC64_TOC16_LO: | |
8982 | case R_PPC64_TOC16_HI: | |
8983 | case R_PPC64_TOC16_HA: | |
8984 | case R_PPC64_TOC16_DS: | |
8985 | case R_PPC64_TOC16_LO_DS: | |
8986 | /* In case we're taking addresses of toc entries. */ | |
8987 | case R_PPC64_ADDR64: | |
8988 | break; | |
c5614fa4 | 8989 | |
d4f1ee75 AM |
8990 | default: |
8991 | continue; | |
8992 | } | |
c5614fa4 | 8993 | |
d4f1ee75 AM |
8994 | r_symndx = ELF64_R_SYM (rel->r_info); |
8995 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8996 | r_symndx, ibfd)) | |
8997 | { | |
8998 | free (used); | |
8999 | goto error_ret; | |
9000 | } | |
c5614fa4 | 9001 | |
d4f1ee75 AM |
9002 | if (sym_sec != toc) |
9003 | continue; | |
c5614fa4 | 9004 | |
d4f1ee75 AM |
9005 | if (h != NULL) |
9006 | val = h->root.u.def.value; | |
9007 | else | |
9008 | val = sym->st_value; | |
9009 | val += rel->r_addend; | |
ba761f19 | 9010 | |
d4f1ee75 AM |
9011 | if (val >= toc->size) |
9012 | continue; | |
ba761f19 | 9013 | |
d4f1ee75 AM |
9014 | if ((skip[val >> 3] & can_optimize) != 0) |
9015 | { | |
9016 | bfd_vma off; | |
9017 | unsigned char opc; | |
9018 | ||
9019 | switch (r_type) | |
9020 | { | |
9021 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9022 | break; |
ba761f19 | 9023 | |
d4f1ee75 AM |
9024 | case R_PPC64_TOC16_LO_DS: |
9025 | off = rel->r_offset; | |
9026 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9027 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9028 | off, 1)) | |
9029 | { | |
9030 | free (used); | |
9031 | goto error_ret; | |
9032 | } | |
9033 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9034 | break; | |
1a0670f3 | 9035 | /* Fall through. */ |
ba761f19 | 9036 | |
d4f1ee75 AM |
9037 | default: |
9038 | /* Wrong sort of reloc, or not a ld. We may | |
9039 | as well clear ref_from_discarded too. */ | |
9040 | skip[val >> 3] = 0; | |
9041 | } | |
9042 | } | |
9043 | ||
9044 | if (sec != toc) | |
9045 | used[val >> 3] = 1; | |
9046 | /* For the toc section, we only mark as used if this | |
9047 | entry itself isn't unused. */ | |
9048 | else if ((used[rel->r_offset >> 3] | |
9049 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9050 | && !used[val >> 3]) | |
9051 | { | |
9052 | /* Do all the relocs again, to catch reference | |
9053 | chains. */ | |
9054 | repeat = 1; | |
9055 | used[val >> 3] = 1; | |
9056 | } | |
9057 | } | |
9058 | } | |
c5614fa4 | 9059 | while (repeat); |
854b41e7 AM |
9060 | |
9061 | if (elf_section_data (sec)->relocs != relstart) | |
9062 | free (relstart); | |
c5614fa4 AM |
9063 | } |
9064 | ||
9065 | /* Merge the used and skip arrays. Assume that TOC | |
9066 | doublewords not appearing as either used or unused belong | |
de194d85 | 9067 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9068 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9069 | drop < skip + (toc->size + 7) / 8; | |
9070 | ++drop, ++keep) | |
9071 | { | |
9072 | if (*keep) | |
9073 | { | |
ba761f19 AM |
9074 | *drop &= ~ref_from_discarded; |
9075 | if ((*drop & can_optimize) != 0) | |
9076 | some_unused = 1; | |
c5614fa4 AM |
9077 | last = 0; |
9078 | } | |
b140b010 | 9079 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9080 | { |
9081 | some_unused = 1; | |
ba761f19 | 9082 | last = ref_from_discarded; |
c5614fa4 AM |
9083 | } |
9084 | else | |
9085 | *drop = last; | |
9086 | } | |
9087 | ||
9088 | free (used); | |
9089 | ||
9090 | if (some_unused) | |
9091 | { | |
9092 | bfd_byte *contents, *src; | |
9093 | unsigned long off; | |
d62b3684 | 9094 | Elf_Internal_Sym *sym; |
ba761f19 | 9095 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9096 | |
9097 | /* Shuffle the toc contents, and at the same time convert the | |
9098 | skip array from booleans into offsets. */ | |
9099 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9100 | goto error_ret; | |
9101 | ||
9102 | elf_section_data (toc)->this_hdr.contents = contents; | |
9103 | ||
9104 | for (src = contents, off = 0, drop = skip; | |
9105 | src < contents + toc->size; | |
9106 | src += 8, ++drop) | |
9107 | { | |
ba761f19 AM |
9108 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9109 | off += 8; | |
c5614fa4 AM |
9110 | else if (off != 0) |
9111 | { | |
9112 | *drop = off; | |
9113 | memcpy (src - off, src, 8); | |
9114 | } | |
9115 | } | |
854b41e7 | 9116 | *drop = off; |
c5614fa4 AM |
9117 | toc->rawsize = toc->size; |
9118 | toc->size = src - contents - off; | |
9119 | ||
ba761f19 AM |
9120 | /* Adjust addends for relocs against the toc section sym, |
9121 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9122 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9123 | { | |
9124 | if (sec->reloc_count == 0 | |
dbaa2011 | 9125 | || discarded_section (sec)) |
c5614fa4 AM |
9126 | continue; |
9127 | ||
9128 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9129 | info->keep_memory); |
c5614fa4 AM |
9130 | if (relstart == NULL) |
9131 | goto error_ret; | |
9132 | ||
9133 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9134 | { | |
9135 | enum elf_ppc64_reloc_type r_type; | |
9136 | unsigned long r_symndx; | |
9137 | asection *sym_sec; | |
9138 | struct elf_link_hash_entry *h; | |
854b41e7 | 9139 | bfd_vma val; |
c5614fa4 AM |
9140 | |
9141 | r_type = ELF64_R_TYPE (rel->r_info); | |
9142 | switch (r_type) | |
9143 | { | |
9144 | default: | |
9145 | continue; | |
9146 | ||
9147 | case R_PPC64_TOC16: | |
9148 | case R_PPC64_TOC16_LO: | |
9149 | case R_PPC64_TOC16_HI: | |
9150 | case R_PPC64_TOC16_HA: | |
9151 | case R_PPC64_TOC16_DS: | |
9152 | case R_PPC64_TOC16_LO_DS: | |
9153 | case R_PPC64_ADDR64: | |
9154 | break; | |
9155 | } | |
9156 | ||
9157 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9158 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9159 | r_symndx, ibfd)) | |
9160 | goto error_ret; | |
9161 | ||
ba761f19 | 9162 | if (sym_sec != toc) |
c5614fa4 AM |
9163 | continue; |
9164 | ||
ba761f19 AM |
9165 | if (h != NULL) |
9166 | val = h->root.u.def.value; | |
9167 | else | |
9168 | { | |
9169 | val = sym->st_value; | |
9170 | if (val != 0) | |
9171 | local_toc_syms = TRUE; | |
9172 | } | |
9173 | ||
9174 | val += rel->r_addend; | |
854b41e7 AM |
9175 | |
9176 | if (val > toc->rawsize) | |
9177 | val = toc->rawsize; | |
ba761f19 AM |
9178 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9179 | continue; | |
9180 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9181 | { | |
9182 | Elf_Internal_Rela *tocrel | |
425b145b | 9183 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9184 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9185 | ||
9186 | switch (r_type) | |
9187 | { | |
9188 | case R_PPC64_TOC16_HA: | |
9189 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9190 | break; | |
9191 | ||
9192 | case R_PPC64_TOC16_LO_DS: | |
9193 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9194 | break; | |
9195 | ||
9196 | default: | |
28942f62 AM |
9197 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9198 | ppc_howto_init (); | |
b140b010 | 9199 | info->callbacks->einfo |
695344c0 | 9200 | /* xgettext:c-format */ |
174d0a74 | 9201 | (_("%H: %s references " |
b140b010 AM |
9202 | "optimized away TOC entry\n"), |
9203 | ibfd, sec, rel->r_offset, | |
9204 | ppc64_elf_howto_table[r_type]->name); | |
9205 | bfd_set_error (bfd_error_bad_value); | |
9206 | goto error_ret; | |
ba761f19 AM |
9207 | } |
9208 | rel->r_addend = tocrel->r_addend; | |
9209 | elf_section_data (sec)->relocs = relstart; | |
9210 | continue; | |
9211 | } | |
9212 | ||
9213 | if (h != NULL || sym->st_value != 0) | |
9214 | continue; | |
854b41e7 AM |
9215 | |
9216 | rel->r_addend -= skip[val >> 3]; | |
9217 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9218 | } |
854b41e7 AM |
9219 | |
9220 | if (elf_section_data (sec)->relocs != relstart) | |
9221 | free (relstart); | |
c5614fa4 AM |
9222 | } |
9223 | ||
9224 | /* We shouldn't have local or global symbols defined in the TOC, | |
9225 | but handle them anyway. */ | |
df22d223 AM |
9226 | if (local_syms != NULL) |
9227 | for (sym = local_syms; | |
9228 | sym < local_syms + symtab_hdr->sh_info; | |
9229 | ++sym) | |
9230 | if (sym->st_value != 0 | |
9231 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9232 | { | |
9233 | unsigned long i; | |
854b41e7 | 9234 | |
df22d223 AM |
9235 | if (sym->st_value > toc->rawsize) |
9236 | i = toc->rawsize >> 3; | |
9237 | else | |
9238 | i = sym->st_value >> 3; | |
854b41e7 | 9239 | |
df22d223 AM |
9240 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9241 | { | |
9242 | if (local_toc_syms) | |
4eca0228 | 9243 | _bfd_error_handler |
df22d223 AM |
9244 | (_("%s defined on removed toc entry"), |
9245 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9246 | do | |
9247 | ++i; | |
9248 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9249 | sym->st_value = (bfd_vma) i << 3; | |
9250 | } | |
d62b3684 | 9251 | |
df22d223 AM |
9252 | sym->st_value -= skip[i]; |
9253 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9254 | } | |
c5614fa4 | 9255 | |
854b41e7 | 9256 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9257 | if (toc_inf.global_toc_syms) |
9258 | { | |
9259 | toc_inf.toc = toc; | |
9260 | toc_inf.skip = skip; | |
9261 | toc_inf.global_toc_syms = FALSE; | |
9262 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9263 | &toc_inf); | |
9264 | } | |
854b41e7 AM |
9265 | |
9266 | if (toc->reloc_count != 0) | |
9267 | { | |
d4730f92 | 9268 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9269 | Elf_Internal_Rela *wrel; |
9270 | bfd_size_type sz; | |
9271 | ||
854b41e7 | 9272 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9273 | if (toc_relocs == NULL) |
9274 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9275 | info->keep_memory); | |
9276 | if (toc_relocs == NULL) | |
9277 | goto error_ret; | |
9278 | ||
425b145b AM |
9279 | wrel = toc_relocs; |
9280 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9281 | if ((skip[rel->r_offset >> 3] |
9282 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9283 | { |
9284 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9285 | wrel->r_info = rel->r_info; | |
9286 | wrel->r_addend = rel->r_addend; | |
9287 | ++wrel; | |
9288 | } | |
9289 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9290 | &local_syms, NULL, NULL)) | |
9291 | goto error_ret; | |
9292 | ||
425b145b AM |
9293 | elf_section_data (toc)->relocs = toc_relocs; |
9294 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9295 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9296 | sz = rel_hdr->sh_entsize; | |
9297 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9298 | } |
c5614fa4 | 9299 | } |
c9594989 | 9300 | else if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9301 | free (toc_relocs); |
c5614fa4 AM |
9302 | |
9303 | if (local_syms != NULL | |
9304 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9305 | { | |
9306 | if (!info->keep_memory) | |
9307 | free (local_syms); | |
9308 | else | |
9309 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9310 | } | |
9311 | free (skip); | |
9312 | } | |
9313 | ||
066f4018 | 9314 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9315 | a GOT relative or PC relative access, possibly reducing the |
9316 | number of GOT entries. */ | |
066f4018 AM |
9317 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9318 | { | |
9319 | asection *sec; | |
9320 | Elf_Internal_Shdr *symtab_hdr; | |
9321 | Elf_Internal_Sym *local_syms; | |
9322 | Elf_Internal_Rela *relstart, *rel; | |
9323 | bfd_vma got; | |
9324 | ||
9325 | if (!is_ppc64_elf (ibfd)) | |
9326 | continue; | |
9327 | ||
903b777d | 9328 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9329 | continue; |
9330 | ||
9331 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9332 | got = 0; |
9333 | if (sec != NULL) | |
9334 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9335 | |
9336 | local_syms = NULL; | |
9337 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9338 | ||
9339 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9340 | { | |
9341 | if (sec->reloc_count == 0 | |
903b777d | 9342 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9343 | || discarded_section (sec)) |
9344 | continue; | |
9345 | ||
9346 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9347 | info->keep_memory); | |
9348 | if (relstart == NULL) | |
9349 | { | |
9350 | got_error_ret: | |
c9594989 | 9351 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
066f4018 AM |
9352 | free (local_syms); |
9353 | if (sec != NULL | |
066f4018 AM |
9354 | && elf_section_data (sec)->relocs != relstart) |
9355 | free (relstart); | |
9356 | return FALSE; | |
9357 | } | |
9358 | ||
9359 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9360 | { | |
9361 | enum elf_ppc64_reloc_type r_type; | |
9362 | unsigned long r_symndx; | |
9363 | Elf_Internal_Sym *sym; | |
9364 | asection *sym_sec; | |
9365 | struct elf_link_hash_entry *h; | |
9366 | struct got_entry *ent; | |
133a1f60 | 9367 | bfd_vma val, pc; |
4a421c53 | 9368 | unsigned char buf[8]; |
066f4018 | 9369 | unsigned int insn; |
903b777d | 9370 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9371 | |
9372 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9373 | switch (r_type) |
9374 | { | |
9375 | default: | |
9376 | insn_check = no_check; | |
9377 | break; | |
9378 | ||
9379 | case R_PPC64_PLT16_HA: | |
9380 | case R_PPC64_GOT_TLSLD16_HA: | |
9381 | case R_PPC64_GOT_TLSGD16_HA: | |
9382 | case R_PPC64_GOT_TPREL16_HA: | |
9383 | case R_PPC64_GOT_DTPREL16_HA: | |
9384 | case R_PPC64_GOT16_HA: | |
9385 | case R_PPC64_TOC16_HA: | |
9386 | insn_check = check_ha; | |
9387 | break; | |
9388 | ||
9389 | case R_PPC64_PLT16_LO: | |
9390 | case R_PPC64_PLT16_LO_DS: | |
9391 | case R_PPC64_GOT_TLSLD16_LO: | |
9392 | case R_PPC64_GOT_TLSGD16_LO: | |
9393 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9394 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9395 | case R_PPC64_GOT16_LO: | |
9396 | case R_PPC64_GOT16_LO_DS: | |
9397 | case R_PPC64_TOC16_LO: | |
9398 | case R_PPC64_TOC16_LO_DS: | |
9399 | insn_check = check_lo; | |
9400 | break; | |
9401 | } | |
9402 | ||
9403 | if (insn_check != no_check) | |
9404 | { | |
9405 | bfd_vma off = rel->r_offset & ~3; | |
9406 | ||
9407 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9408 | goto got_error_ret; | |
9409 | ||
9410 | insn = bfd_get_32 (ibfd, buf); | |
9411 | if (insn_check == check_lo | |
9412 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9413 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9414 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9415 | { | |
9416 | char str[12]; | |
9417 | ||
9418 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9419 | sprintf (str, "%#08x", insn); | |
9420 | info->callbacks->einfo | |
9421 | /* xgettext:c-format */ | |
9422 | (_("%H: got/toc optimization is not supported for" | |
9423 | " %s instruction\n"), | |
9424 | ibfd, sec, rel->r_offset & ~3, str); | |
9425 | continue; | |
9426 | } | |
9427 | } | |
9428 | ||
066f4018 AM |
9429 | switch (r_type) |
9430 | { | |
bb22a418 AM |
9431 | /* Note that we don't delete GOT entries for |
9432 | R_PPC64_GOT16_DS since we'd need a lot more | |
9433 | analysis. For starters, the preliminary layout is | |
9434 | before the GOT, PLT, dynamic sections and stubs are | |
9435 | laid out. Then we'd need to allow for changes in | |
9436 | distance between sections caused by alignment. */ | |
066f4018 AM |
9437 | default: |
9438 | continue; | |
9439 | ||
066f4018 AM |
9440 | case R_PPC64_GOT16_HA: |
9441 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9442 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9443 | break; |
9444 | } | |
9445 | ||
9446 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9447 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9448 | r_symndx, ibfd)) | |
9449 | goto got_error_ret; | |
9450 | ||
6d5554a6 AM |
9451 | if (sym_sec == NULL |
9452 | || sym_sec->output_section == NULL | |
9453 | || discarded_section (sym_sec)) | |
9454 | continue; | |
9455 | ||
06507dab AM |
9456 | if ((h ? h->type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
9457 | continue; | |
9458 | ||
066f4018 AM |
9459 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
9460 | continue; | |
9461 | ||
9462 | if (h != NULL) | |
9463 | val = h->root.u.def.value; | |
9464 | else | |
9465 | val = sym->st_value; | |
133a1f60 | 9466 | val += rel->r_addend; |
066f4018 AM |
9467 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9468 | ||
bb22a418 AM |
9469 | /* Fudge factor to allow for the fact that the preliminary layout |
9470 | isn't exact. Reduce limits by this factor. */ | |
9471 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9472 | ||
066f4018 AM |
9473 | switch (r_type) |
9474 | { | |
9475 | default: | |
9476 | continue; | |
9477 | ||
066f4018 | 9478 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9479 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9480 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9481 | continue; |
9482 | ||
9483 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9484 | rel->r_offset & ~3, 4)) | |
9485 | goto got_error_ret; | |
9486 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9487 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9488 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9489 | continue; | |
9490 | break; | |
9491 | ||
9492 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9493 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9494 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9495 | continue; |
9496 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9497 | rel->r_offset & ~3, 4)) | |
9498 | goto got_error_ret; | |
9499 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9500 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9501 | continue; |
9502 | break; | |
4a421c53 AM |
9503 | |
9504 | case R_PPC64_GOT_PCREL34: | |
9505 | pc = rel->r_offset; | |
9506 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9507 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9508 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9509 | continue; |
9510 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9511 | rel->r_offset & ~3, 8)) | |
9512 | goto got_error_ret; | |
9513 | insn = bfd_get_32 (ibfd, buf); | |
9514 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9515 | continue; | |
9516 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9517 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9518 | continue; |
9519 | break; | |
066f4018 | 9520 | } |
bb22a418 | 9521 | #undef LIMIT_ADJUST |
066f4018 AM |
9522 | |
9523 | if (h != NULL) | |
9524 | ent = h->got.glist; | |
9525 | else | |
9526 | { | |
9527 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9528 | ent = local_got_ents[r_symndx]; | |
9529 | } | |
9530 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9531 | if (ent->addend == rel->r_addend |
066f4018 AM |
9532 | && ent->owner == ibfd |
9533 | && ent->tls_type == 0) | |
9534 | break; | |
9535 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9536 | ent->got.refcount -= 1; | |
9537 | } | |
9538 | ||
9539 | if (elf_section_data (sec)->relocs != relstart) | |
9540 | free (relstart); | |
9541 | } | |
9542 | ||
9543 | if (local_syms != NULL | |
9544 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9545 | { | |
9546 | if (!info->keep_memory) | |
9547 | free (local_syms); | |
9548 | else | |
9549 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9550 | } | |
9551 | } | |
9552 | ||
c5614fa4 AM |
9553 | return TRUE; |
9554 | } | |
9555 | ||
1bbe0902 AM |
9556 | /* Return true iff input section I references the TOC using |
9557 | instructions limited to +/-32k offsets. */ | |
9558 | ||
9559 | bfd_boolean | |
9560 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9561 | { | |
9562 | return (is_ppc64_elf (i->owner) | |
9563 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9564 | } | |
9565 | ||
927be08e AM |
9566 | /* Allocate space for one GOT entry. */ |
9567 | ||
9568 | static void | |
9569 | allocate_got (struct elf_link_hash_entry *h, | |
9570 | struct bfd_link_info *info, | |
9571 | struct got_entry *gent) | |
9572 | { | |
9573 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ed7007c1 | 9574 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
927be08e AM |
9575 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) |
9576 | ? 16 : 8); | |
9577 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9578 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9579 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9580 | ||
9581 | gent->got.offset = got->size; | |
9582 | got->size += entsize; | |
9583 | ||
19e08130 | 9584 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9585 | { |
33e44f2e | 9586 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9587 | htab->got_reli_size += rentsize; |
927be08e | 9588 | } |
f15d0b54 | 9589 | else if (((bfd_link_pic (info) |
f749f26e | 9590 | && !(gent->tls_type != 0 |
f15d0b54 AM |
9591 | && bfd_link_executable (info) |
9592 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9593 | || (htab->elf.dynamic_sections_created |
9594 | && h->dynindx != -1 | |
9595 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9596 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9597 | { |
19e08130 | 9598 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9599 | relgot->size += rentsize; |
927be08e AM |
9600 | } |
9601 | } | |
9602 | ||
7865406b AM |
9603 | /* This function merges got entries in the same toc group. */ |
9604 | ||
9605 | static void | |
9606 | merge_got_entries (struct got_entry **pent) | |
9607 | { | |
9608 | struct got_entry *ent, *ent2; | |
9609 | ||
9610 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9611 | if (!ent->is_indirect) | |
9612 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9613 | if (!ent2->is_indirect | |
9614 | && ent2->addend == ent->addend | |
9615 | && ent2->tls_type == ent->tls_type | |
9616 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9617 | { | |
9618 | ent2->is_indirect = TRUE; | |
9619 | ent2->got.ent = ent; | |
9620 | } | |
9621 | } | |
9622 | ||
46434633 | 9623 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9624 | |
9625 | static bfd_boolean | |
46434633 AM |
9626 | ensure_undef_dynamic (struct bfd_link_info *info, |
9627 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9628 | { |
9629 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9630 | ||
9631 | if (htab->dynamic_sections_created | |
46434633 AM |
9632 | && ((info->dynamic_undefined_weak != 0 |
9633 | && h->root.type == bfd_link_hash_undefweak) | |
9634 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9635 | && h->dynindx == -1 |
9636 | && !h->forced_local | |
9637 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9638 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9639 | return TRUE; | |
9640 | } | |
9641 | ||
30845f11 AM |
9642 | /* Choose whether to use htab->iplt or htab->pltlocal rather than the |
9643 | usual htab->elf.splt section for a PLT entry. */ | |
9644 | ||
9645 | static inline | |
9646 | bfd_boolean use_local_plt (struct bfd_link_info *info, | |
9647 | struct elf_link_hash_entry *h) | |
9648 | { | |
9649 | return (h == NULL | |
9650 | || h->dynindx == -1 | |
9651 | || !elf_hash_table (info)->dynamic_sections_created); | |
9652 | } | |
9653 | ||
65f38f15 AM |
9654 | /* Allocate space in .plt, .got and associated reloc sections for |
9655 | dynamic relocs. */ | |
5bd4f169 | 9656 | |
b34976b6 | 9657 | static bfd_boolean |
4ce794b7 | 9658 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9659 | { |
65f38f15 AM |
9660 | struct bfd_link_info *info; |
9661 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9662 | asection *s; |
65f38f15 | 9663 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9664 | struct got_entry **pgent, *gent; |
5bd4f169 | 9665 | |
e92d460e | 9666 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9667 | return TRUE; |
5bd4f169 | 9668 | |
65f38f15 AM |
9669 | info = (struct bfd_link_info *) inf; |
9670 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9671 | if (htab == NULL) |
9672 | return FALSE; | |
5bd4f169 | 9673 | |
ed7007c1 | 9674 | eh = ppc_elf_hash_entry (h); |
951fd09b AM |
9675 | /* Run through the TLS GD got entries first if we're changing them |
9676 | to TPREL. */ | |
b00a0a86 | 9677 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9678 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9679 | if (gent->got.refcount > 0 | |
9680 | && (gent->tls_type & TLS_GD) != 0) | |
9681 | { | |
9682 | /* This was a GD entry that has been converted to TPREL. If | |
9683 | there happens to be a TPREL entry we can use that one. */ | |
9684 | struct got_entry *ent; | |
9685 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9686 | if (ent->got.refcount > 0 | |
9687 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9688 | && ent->addend == gent->addend |
9689 | && ent->owner == gent->owner) | |
951fd09b AM |
9690 | { |
9691 | gent->got.refcount = 0; | |
9692 | break; | |
9693 | } | |
9694 | ||
9695 | /* If not, then we'll be using our own TPREL entry. */ | |
9696 | if (gent->got.refcount != 0) | |
9697 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9698 | } | |
9699 | ||
7865406b AM |
9700 | /* Remove any list entry that won't generate a word in the GOT before |
9701 | we call merge_got_entries. Otherwise we risk merging to empty | |
9702 | entries. */ | |
0b8bcf0d AM |
9703 | pgent = &h->got.glist; |
9704 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9705 | if (gent->got.refcount > 0) |
7865406b AM |
9706 | { |
9707 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9708 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9709 | { |
9710 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9711 | *pgent = gent->next; | |
9712 | } | |
9713 | else | |
9714 | pgent = &gent->next; | |
9715 | } | |
9716 | else | |
9717 | *pgent = gent->next; | |
9718 | ||
9719 | if (!htab->do_multi_toc) | |
9720 | merge_got_entries (&h->got.glist); | |
9721 | ||
9722 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9723 | if (!gent->is_indirect) | |
411e1bfb | 9724 | { |
ec73ddcd AM |
9725 | /* Ensure we catch all the cases where this symbol should |
9726 | be made dynamic. */ | |
46434633 | 9727 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9728 | return FALSE; |
65f38f15 | 9729 | |
0c8d6e5c | 9730 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9731 | abort (); |
0ffa91dd | 9732 | |
927be08e | 9733 | allocate_got (h, info, gent); |
411e1bfb | 9734 | } |
65f38f15 | 9735 | |
954b63d4 AM |
9736 | /* If no dynamic sections we can't have dynamic relocs, except for |
9737 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9738 | if (!htab->elf.dynamic_sections_created |
9739 | && h->type != STT_GNU_IFUNC) | |
190eb1dd | 9740 | h->dyn_relocs = NULL; |
8a2058b5 | 9741 | |
529fe20e AM |
9742 | /* Discard relocs on undefined symbols that must be local. */ |
9743 | else if (h->root.type == bfd_link_hash_undefined | |
9744 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
190eb1dd | 9745 | h->dyn_relocs = NULL; |
529fe20e | 9746 | |
954b63d4 AM |
9747 | /* Also discard relocs on undefined weak syms with non-default |
9748 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9749 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 9750 | h->dyn_relocs = NULL; |
954b63d4 | 9751 | |
190eb1dd | 9752 | if (h->dyn_relocs != NULL) |
65f38f15 | 9753 | { |
8a2058b5 AM |
9754 | struct elf_dyn_relocs *p, **pp; |
9755 | ||
57e7d118 AM |
9756 | /* In the shared -Bsymbolic case, discard space allocated for |
9757 | dynamic pc-relative relocs against symbols which turn out to | |
9758 | be defined in regular objects. For the normal shared case, | |
9759 | discard space for relocs that have become local due to symbol | |
9760 | visibility changes. */ | |
57e7d118 | 9761 | if (bfd_link_pic (info)) |
65f38f15 | 9762 | { |
57e7d118 AM |
9763 | /* Relocs that use pc_count are those that appear on a call |
9764 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9765 | can be generated via assembly. We want calls to | |
9766 | protected symbols to resolve directly to the function | |
9767 | rather than going via the plt. If people want function | |
9768 | pointer comparisons to work as expected then they should | |
9769 | avoid writing weird assembly. */ | |
9770 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9771 | { | |
190eb1dd | 9772 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
57e7d118 AM |
9773 | { |
9774 | p->count -= p->pc_count; | |
9775 | p->pc_count = 0; | |
9776 | if (p->count == 0) | |
9777 | *pp = p->next; | |
9778 | else | |
9779 | pp = &p->next; | |
9780 | } | |
9781 | } | |
65f38f15 | 9782 | |
190eb1dd | 9783 | if (h->dyn_relocs != NULL) |
5bd4f169 | 9784 | { |
ec73ddcd AM |
9785 | /* Ensure we catch all the cases where this symbol |
9786 | should be made dynamic. */ | |
46434633 | 9787 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9788 | return FALSE; |
5bd4f169 | 9789 | } |
65f38f15 | 9790 | } |
ec73ddcd AM |
9791 | |
9792 | /* For a fixed position executable, discard space for | |
9793 | relocs against symbols which are not dynamic. */ | |
9794 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9795 | { |
529fe20e AM |
9796 | if (h->dynamic_adjusted |
9797 | && !h->def_regular | |
9798 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9799 | { |
ec73ddcd AM |
9800 | /* Ensure we catch all the cases where this symbol |
9801 | should be made dynamic. */ | |
46434633 | 9802 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9803 | return FALSE; |
dfbb6ac9 | 9804 | |
ec73ddcd | 9805 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 | 9806 | if (h->dynindx == -1) |
190eb1dd | 9807 | h->dyn_relocs = NULL; |
f0158f44 AM |
9808 | } |
9809 | else | |
190eb1dd | 9810 | h->dyn_relocs = NULL; |
57e7d118 AM |
9811 | } |
9812 | ||
9813 | /* Finally, allocate space. */ | |
190eb1dd | 9814 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
57e7d118 AM |
9815 | { |
9816 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9817 | if (eh->elf.type == STT_GNU_IFUNC) | |
9818 | sreloc = htab->elf.irelplt; | |
9819 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9820 | } |
65f38f15 | 9821 | } |
57e7d118 | 9822 | |
2d7ad24e AM |
9823 | /* We might need a PLT entry when the symbol |
9824 | a) is dynamic, or | |
9825 | b) is an ifunc, or | |
9826 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9827 | d) has plt16 relocs and we are linking statically. */ | |
9828 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9829 | || h->type == STT_GNU_IFUNC | |
9830 | || (h->needs_plt && h->dynamic_adjusted) | |
9831 | || (h->needs_plt | |
9832 | && h->def_regular | |
9833 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9834 | && !htab->can_convert_all_inline_plt |
ed7007c1 | 9835 | && (ppc_elf_hash_entry (h)->tls_mask |
2d7ad24e | 9836 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) |
65f38f15 | 9837 | { |
57e7d118 AM |
9838 | struct plt_entry *pent; |
9839 | bfd_boolean doneone = FALSE; | |
9840 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9841 | if (pent->plt.refcount > 0) | |
9842 | { | |
30845f11 | 9843 | if (use_local_plt (info, h)) |
57e7d118 | 9844 | { |
2d7ad24e AM |
9845 | if (h->type == STT_GNU_IFUNC) |
9846 | { | |
9847 | s = htab->elf.iplt; | |
9848 | pent->plt.offset = s->size; | |
9849 | s->size += PLT_ENTRY_SIZE (htab); | |
9850 | s = htab->elf.irelplt; | |
9851 | } | |
9852 | else | |
9853 | { | |
9854 | s = htab->pltlocal; | |
9855 | pent->plt.offset = s->size; | |
9856 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9857 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9858 | } | |
57e7d118 AM |
9859 | } |
9860 | else | |
9861 | { | |
9862 | /* If this is the first .plt entry, make room for the special | |
9863 | first entry. */ | |
9864 | s = htab->elf.splt; | |
9865 | if (s->size == 0) | |
9866 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9867 | |
57e7d118 | 9868 | pent->plt.offset = s->size; |
65f38f15 | 9869 | |
57e7d118 AM |
9870 | /* Make room for this entry. */ |
9871 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9872 | |
57e7d118 AM |
9873 | /* Make room for the .glink code. */ |
9874 | s = htab->glink; | |
9875 | if (s->size == 0) | |
9e390558 | 9876 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9877 | if (htab->opd_abi) |
9878 | { | |
9879 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9880 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9881 | s->size += 4; |
9882 | s->size += 2*4; | |
9883 | } | |
9884 | else | |
9885 | s->size += 4; | |
65f38f15 | 9886 | |
57e7d118 AM |
9887 | /* We also need to make an entry in the .rela.plt section. */ |
9888 | s = htab->elf.srelplt; | |
9889 | } | |
2d7ad24e AM |
9890 | if (s != NULL) |
9891 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9892 | doneone = TRUE; |
9893 | } | |
9894 | else | |
9895 | pent->plt.offset = (bfd_vma) -1; | |
9896 | if (!doneone) | |
9897 | { | |
9898 | h->plt.plist = NULL; | |
9899 | h->needs_plt = 0; | |
9900 | } | |
65f38f15 | 9901 | } |
57e7d118 | 9902 | else |
65f38f15 | 9903 | { |
57e7d118 AM |
9904 | h->plt.plist = NULL; |
9905 | h->needs_plt = 0; | |
65f38f15 AM |
9906 | } |
9907 | ||
b34976b6 | 9908 | return TRUE; |
65f38f15 AM |
9909 | } |
9910 | ||
9e390558 AM |
9911 | #define PPC_LO(v) ((v) & 0xffff) |
9912 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9913 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9914 | #define D34(v) \ |
9915 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9916 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9917 | |
a345bc8d AM |
9918 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9919 | to set up space for global entry stubs. These are put in glink, | |
9920 | after the branch table. */ | |
65f38f15 | 9921 | |
b34976b6 | 9922 | static bfd_boolean |
a345bc8d | 9923 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9924 | { |
a345bc8d AM |
9925 | struct bfd_link_info *info; |
9926 | struct ppc_link_hash_table *htab; | |
9927 | struct plt_entry *pent; | |
9e390558 | 9928 | asection *s, *plt; |
65f38f15 | 9929 | |
a345bc8d AM |
9930 | if (h->root.type == bfd_link_hash_indirect) |
9931 | return TRUE; | |
65f38f15 | 9932 | |
a345bc8d AM |
9933 | if (!h->pointer_equality_needed) |
9934 | return TRUE; | |
65f38f15 | 9935 | |
a345bc8d AM |
9936 | if (h->def_regular) |
9937 | return TRUE; | |
65f38f15 | 9938 | |
a345bc8d AM |
9939 | info = inf; |
9940 | htab = ppc_hash_table (info); | |
9941 | if (htab == NULL) | |
9942 | return FALSE; | |
9943 | ||
9e390558 AM |
9944 | s = htab->global_entry; |
9945 | plt = htab->elf.splt; | |
a345bc8d AM |
9946 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9947 | if (pent->plt.offset != (bfd_vma) -1 | |
9948 | && pent->addend == 0) | |
9949 | { | |
afe397ea AM |
9950 | /* For ELFv2, if this symbol is not defined in a regular file |
9951 | and we are not generating a shared library or pie, then we | |
9952 | need to define the symbol in the executable on a call stub. | |
9953 | This is to avoid text relocations. */ | |
9e390558 AM |
9954 | bfd_vma off, stub_align, stub_off, stub_size; |
9955 | unsigned int align_power; | |
9956 | ||
9957 | stub_size = 16; | |
9958 | stub_off = s->size; | |
9959 | if (htab->params->plt_stub_align >= 0) | |
9960 | align_power = htab->params->plt_stub_align; | |
9961 | else | |
9962 | align_power = -htab->params->plt_stub_align; | |
9963 | /* Setting section alignment is delayed until we know it is | |
9964 | non-empty. Otherwise the .text output section will be | |
9965 | aligned at least to plt_stub_align even when no global | |
9966 | entry stubs are needed. */ | |
9967 | if (s->alignment_power < align_power) | |
9968 | s->alignment_power = align_power; | |
9969 | stub_align = (bfd_vma) 1 << align_power; | |
9970 | if (htab->params->plt_stub_align >= 0 | |
9971 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9972 | - (stub_off & -stub_align)) | |
9973 | > ((stub_size - 1) & -stub_align))) | |
9974 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9975 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9976 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9977 | /* Note that for --plt-stub-align negative we have a possible | |
9978 | dependency between stub offset and size. Break that | |
9979 | dependency by assuming the max stub size when calculating | |
9980 | the stub offset. */ | |
9981 | if (PPC_HA (off) == 0) | |
9982 | stub_size -= 4; | |
8a2058b5 | 9983 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9984 | h->root.u.def.section = s; |
9e390558 AM |
9985 | h->root.u.def.value = stub_off; |
9986 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9987 | break; |
9988 | } | |
9989 | return TRUE; | |
9990 | } | |
9991 | ||
65f38f15 AM |
9992 | /* Set the sizes of the dynamic sections. */ |
9993 | ||
b34976b6 | 9994 | static bfd_boolean |
ee67d69a | 9995 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9996 | struct bfd_link_info *info) |
65f38f15 AM |
9997 | { |
9998 | struct ppc_link_hash_table *htab; | |
9999 | bfd *dynobj; | |
10000 | asection *s; | |
b34976b6 | 10001 | bfd_boolean relocs; |
65f38f15 | 10002 | bfd *ibfd; |
7865406b | 10003 | struct got_entry *first_tlsld; |
65f38f15 AM |
10004 | |
10005 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10006 | if (htab == NULL) |
10007 | return FALSE; | |
10008 | ||
65f38f15 AM |
10009 | dynobj = htab->elf.dynobj; |
10010 | if (dynobj == NULL) | |
10011 | abort (); | |
10012 | ||
10013 | if (htab->elf.dynamic_sections_created) | |
10014 | { | |
10015 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10016 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10017 | { |
3d4d4302 | 10018 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10019 | if (s == NULL) |
10020 | abort (); | |
eea6121a | 10021 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10022 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10023 | } | |
10024 | } | |
10025 | ||
10026 | /* Set up .got offsets for local syms, and space for local dynamic | |
10027 | relocs. */ | |
c72f2fb2 | 10028 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10029 | { |
411e1bfb AM |
10030 | struct got_entry **lgot_ents; |
10031 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10032 | struct plt_entry **local_plt; |
10033 | struct plt_entry **end_local_plt; | |
f961d9dd | 10034 | unsigned char *lgot_masks; |
65f38f15 AM |
10035 | bfd_size_type locsymcount; |
10036 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10037 | |
0c8d6e5c | 10038 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10039 | continue; |
10040 | ||
10041 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10042 | { | |
19e08130 | 10043 | struct ppc_dyn_relocs *p; |
65f38f15 | 10044 | |
6edfbbad | 10045 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10046 | { |
ec338859 AM |
10047 | if (!bfd_is_abs_section (p->sec) |
10048 | && bfd_is_abs_section (p->sec->output_section)) | |
10049 | { | |
10050 | /* Input section has been discarded, either because | |
10051 | it is a copy of a linkonce section or due to | |
10052 | linker script /DISCARD/, so we'll be discarding | |
10053 | the relocs too. */ | |
10054 | } | |
248866a8 | 10055 | else if (p->count != 0) |
ec338859 | 10056 | { |
19e08130 AM |
10057 | asection *srel = elf_section_data (p->sec)->sreloc; |
10058 | if (p->ifunc) | |
33e44f2e | 10059 | srel = htab->elf.irelplt; |
eea6121a | 10060 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10061 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10062 | info->flags |= DF_TEXTREL; | |
ec338859 | 10063 | } |
65f38f15 AM |
10064 | } |
10065 | } | |
10066 | ||
411e1bfb AM |
10067 | lgot_ents = elf_local_got_ents (ibfd); |
10068 | if (!lgot_ents) | |
65f38f15 AM |
10069 | continue; |
10070 | ||
0ffa91dd | 10071 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10072 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10073 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10074 | local_plt = (struct plt_entry **) end_lgot_ents; |
10075 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10076 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10077 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10078 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10079 | { |
0b8bcf0d | 10080 | struct got_entry **pent, *ent; |
411e1bfb | 10081 | |
0b8bcf0d AM |
10082 | pent = lgot_ents; |
10083 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10084 | if (ent->got.refcount > 0) |
10085 | { | |
e7b938ca | 10086 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10087 | { |
927be08e | 10088 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10089 | *pent = ent->next; |
411e1bfb AM |
10090 | } |
10091 | else | |
10092 | { | |
19e08130 AM |
10093 | unsigned int ent_size = 8; |
10094 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10095 | ||
eea6121a | 10096 | ent->got.offset = s->size; |
e7b938ca | 10097 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10098 | { |
19e08130 AM |
10099 | ent_size *= 2; |
10100 | rel_size *= 2; | |
10101 | } | |
10102 | s->size += ent_size; | |
37da22e5 | 10103 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10104 | { |
33e44f2e | 10105 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10106 | htab->got_reli_size += rel_size; |
10107 | } | |
93370e8e AM |
10108 | else if (bfd_link_pic (info) |
10109 | && !(ent->tls_type != 0 | |
10110 | && bfd_link_executable (info))) | |
19e08130 AM |
10111 | { |
10112 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10113 | srel->size += rel_size; | |
927be08e | 10114 | } |
0b8bcf0d | 10115 | pent = &ent->next; |
411e1bfb AM |
10116 | } |
10117 | } | |
10118 | else | |
0b8bcf0d | 10119 | *pent = ent->next; |
65f38f15 | 10120 | } |
e054468f | 10121 | |
2d7ad24e AM |
10122 | /* Allocate space for plt calls to local syms. */ |
10123 | lgot_masks = (unsigned char *) end_local_plt; | |
10124 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10125 | { |
10126 | struct plt_entry *ent; | |
10127 | ||
10128 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10129 | if (ent->plt.refcount > 0) | |
10130 | { | |
2d7ad24e AM |
10131 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10132 | { | |
10133 | s = htab->elf.iplt; | |
10134 | ent->plt.offset = s->size; | |
10135 | s->size += PLT_ENTRY_SIZE (htab); | |
10136 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10137 | } | |
3e04d765 AM |
10138 | else if (htab->can_convert_all_inline_plt |
10139 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10140 | ent->plt.offset = (bfd_vma) -1; |
10141 | else | |
10142 | { | |
10143 | s = htab->pltlocal; | |
10144 | ent->plt.offset = s->size; | |
10145 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10146 | if (bfd_link_pic (info)) | |
10147 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10148 | } | |
e054468f AM |
10149 | } |
10150 | else | |
10151 | ent->plt.offset = (bfd_vma) -1; | |
10152 | } | |
65f38f15 AM |
10153 | } |
10154 | ||
10155 | /* Allocate global sym .plt and .got entries, and space for global | |
10156 | sym dynamic relocs. */ | |
4ce794b7 | 10157 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10158 | |
0e1862bb | 10159 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10160 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10161 | |
7865406b | 10162 | first_tlsld = NULL; |
c72f2fb2 | 10163 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10164 | { |
7865406b AM |
10165 | struct got_entry *ent; |
10166 | ||
0c8d6e5c | 10167 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10168 | continue; |
10169 | ||
7865406b AM |
10170 | ent = ppc64_tlsld_got (ibfd); |
10171 | if (ent->got.refcount > 0) | |
102890f0 | 10172 | { |
7865406b | 10173 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10174 | { |
7865406b AM |
10175 | ent->is_indirect = TRUE; |
10176 | ent->got.ent = first_tlsld; | |
10177 | } | |
10178 | else | |
10179 | { | |
10180 | if (first_tlsld == NULL) | |
10181 | first_tlsld = ent; | |
10182 | s = ppc64_elf_tdata (ibfd)->got; | |
10183 | ent->got.offset = s->size; | |
10184 | ent->owner = ibfd; | |
10185 | s->size += 16; | |
f749f26e | 10186 | if (bfd_link_dll (info)) |
7865406b AM |
10187 | { |
10188 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10189 | srel->size += sizeof (Elf64_External_Rela); | |
10190 | } | |
102890f0 AM |
10191 | } |
10192 | } | |
10193 | else | |
7865406b | 10194 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10195 | } |
10196 | ||
65f38f15 AM |
10197 | /* We now have determined the sizes of the various dynamic sections. |
10198 | Allocate memory for them. */ | |
b34976b6 | 10199 | relocs = FALSE; |
65f38f15 AM |
10200 | for (s = dynobj->sections; s != NULL; s = s->next) |
10201 | { | |
10202 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10203 | continue; | |
10204 | ||
4ce794b7 | 10205 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10206 | /* These haven't been allocated yet; don't strip. */ |
10207 | continue; | |
33e44f2e AM |
10208 | else if (s == htab->elf.sgot |
10209 | || s == htab->elf.splt | |
10210 | || s == htab->elf.iplt | |
2d7ad24e | 10211 | || s == htab->pltlocal |
c456f082 | 10212 | || s == htab->glink |
9e390558 | 10213 | || s == htab->global_entry |
5474d94f AM |
10214 | || s == htab->elf.sdynbss |
10215 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10216 | { |
10217 | /* Strip this section if we don't need it; see the | |
10218 | comment below. */ | |
5bd4f169 | 10219 | } |
58d180e8 AM |
10220 | else if (s == htab->glink_eh_frame) |
10221 | { | |
10222 | if (!bfd_is_abs_section (s->output_section)) | |
10223 | /* Not sized yet. */ | |
10224 | continue; | |
10225 | } | |
70cc837d | 10226 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10227 | { |
c456f082 | 10228 | if (s->size != 0) |
5bd4f169 | 10229 | { |
33e44f2e | 10230 | if (s != htab->elf.srelplt) |
b34976b6 | 10231 | relocs = TRUE; |
5bd4f169 AM |
10232 | |
10233 | /* We use the reloc_count field as a counter if we need | |
10234 | to copy relocs into the output file. */ | |
10235 | s->reloc_count = 0; | |
10236 | } | |
10237 | } | |
65f38f15 | 10238 | else |
5bd4f169 AM |
10239 | { |
10240 | /* It's not one of our sections, so don't allocate space. */ | |
10241 | continue; | |
10242 | } | |
10243 | ||
eea6121a | 10244 | if (s->size == 0) |
5bd4f169 | 10245 | { |
c456f082 AM |
10246 | /* If we don't need this section, strip it from the |
10247 | output file. This is mostly to handle .rela.bss and | |
10248 | .rela.plt. We must create both sections in | |
10249 | create_dynamic_sections, because they must be created | |
10250 | before the linker maps input sections to output | |
10251 | sections. The linker does that before | |
10252 | adjust_dynamic_symbol is called, and it is that | |
10253 | function which decides whether anything needs to go | |
10254 | into these sections. */ | |
8423293d | 10255 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10256 | continue; |
10257 | } | |
10258 | ||
06bcf541 AM |
10259 | if (bfd_is_abs_section (s->output_section)) |
10260 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10261 | s->name); | |
10262 | ||
c456f082 | 10263 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10264 | continue; |
10265 | ||
65f38f15 AM |
10266 | /* Allocate memory for the section contents. We use bfd_zalloc |
10267 | here in case unused entries are not reclaimed before the | |
10268 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10269 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10270 | sections instead of garbage. | |
10271 | We also rely on the section contents being zero when writing | |
5474d94f | 10272 | the GOT and .dynrelro. */ |
eea6121a | 10273 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10274 | if (s->contents == NULL) |
b34976b6 | 10275 | return FALSE; |
5bd4f169 AM |
10276 | } |
10277 | ||
c72f2fb2 | 10278 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10279 | { |
0c8d6e5c | 10280 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10281 | continue; |
10282 | ||
e717da7e | 10283 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10284 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10285 | { |
eea6121a | 10286 | if (s->size == 0) |
8423293d | 10287 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10288 | else |
10289 | { | |
eea6121a | 10290 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10291 | if (s->contents == NULL) |
10292 | return FALSE; | |
10293 | } | |
10294 | } | |
10295 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10296 | if (s != NULL) | |
10297 | { | |
eea6121a | 10298 | if (s->size == 0) |
8423293d | 10299 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10300 | else |
10301 | { | |
eea6121a | 10302 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10303 | if (s->contents == NULL) |
10304 | return FALSE; | |
10305 | relocs = TRUE; | |
10306 | s->reloc_count = 0; | |
10307 | } | |
10308 | } | |
10309 | } | |
10310 | ||
e86ce104 | 10311 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10312 | { |
e8910a83 AM |
10313 | bfd_boolean tls_opt; |
10314 | ||
5bd4f169 AM |
10315 | /* Add some entries to the .dynamic section. We fill in the |
10316 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10317 | must add the entries now so that we get the correct size for | |
10318 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10319 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10320 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10321 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10322 | |
0e1862bb | 10323 | if (bfd_link_executable (info)) |
5bd4f169 | 10324 | { |
dc810e39 | 10325 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10326 | return FALSE; |
5bd4f169 AM |
10327 | } |
10328 | ||
33e44f2e | 10329 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10330 | { |
dc810e39 AM |
10331 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10332 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10333 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10334 | || !add_dynamic_entry (DT_JMPREL, 0) |
10335 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10336 | return FALSE; |
5bd4f169 AM |
10337 | } |
10338 | ||
ee67d69a | 10339 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10340 | { |
10341 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10342 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10343 | return FALSE; |
19397422 AM |
10344 | } |
10345 | ||
7c9cf415 | 10346 | tls_opt = (htab->params->tls_get_addr_opt |
9e7028aa AM |
10347 | && ((htab->tls_get_addr_fd != NULL |
10348 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
10349 | || (htab->tga_desc_fd != NULL | |
10350 | && htab->tga_desc_fd->elf.plt.plist != NULL))); | |
e8910a83 AM |
10351 | if (tls_opt || !htab->opd_abi) |
10352 | { | |
10353 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10354 | return FALSE; | |
10355 | } | |
a7f2871e | 10356 | |
5bd4f169 AM |
10357 | if (relocs) |
10358 | { | |
dc810e39 AM |
10359 | if (!add_dynamic_entry (DT_RELA, 0) |
10360 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10361 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10362 | return FALSE; |
5bd4f169 | 10363 | |
65f38f15 AM |
10364 | /* If any dynamic relocs apply to a read-only section, |
10365 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10366 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
10367 | elf_link_hash_traverse (&htab->elf, |
10368 | _bfd_elf_maybe_set_textrel, info); | |
5bd4f169 | 10369 | |
65f38f15 | 10370 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10371 | { |
65f38f15 | 10372 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10373 | return FALSE; |
5bd4f169 | 10374 | } |
5bd4f169 | 10375 | } |
5bd4f169 | 10376 | } |
65f38f15 | 10377 | #undef add_dynamic_entry |
5bd4f169 | 10378 | |
b34976b6 | 10379 | return TRUE; |
5bd4f169 AM |
10380 | } |
10381 | ||
a345bc8d AM |
10382 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10383 | ||
10384 | static bfd_boolean | |
10385 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10386 | { | |
10387 | if (h->plt.plist != NULL | |
10388 | && !h->def_regular | |
10389 | && !h->pointer_equality_needed) | |
10390 | return FALSE; | |
10391 | ||
10392 | return _bfd_elf_hash_symbol (h); | |
10393 | } | |
10394 | ||
721956f4 | 10395 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10396 | |
4ce794b7 AM |
10397 | static inline enum ppc_stub_type |
10398 | ppc_type_of_stub (asection *input_sec, | |
10399 | const Elf_Internal_Rela *rel, | |
10400 | struct ppc_link_hash_entry **hash, | |
e054468f | 10401 | struct plt_entry **plt_ent, |
6911b7dc AM |
10402 | bfd_vma destination, |
10403 | unsigned long local_off) | |
5bd4f169 | 10404 | { |
721956f4 AM |
10405 | struct ppc_link_hash_entry *h = *hash; |
10406 | bfd_vma location; | |
10407 | bfd_vma branch_offset; | |
10408 | bfd_vma max_branch_offset; | |
4ce794b7 | 10409 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10410 | |
721956f4 AM |
10411 | if (h != NULL) |
10412 | { | |
e054468f | 10413 | struct plt_entry *ent; |
7fe2b9a6 | 10414 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10415 | if (h->oh != NULL |
10416 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10417 | { |
10418 | fdh = ppc_follow_link (h->oh); | |
10419 | *hash = fdh; | |
10420 | } | |
8387904d | 10421 | |
e054468f AM |
10422 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10423 | if (ent->addend == rel->r_addend | |
10424 | && ent->plt.offset != (bfd_vma) -1) | |
10425 | { | |
e054468f AM |
10426 | *plt_ent = ent; |
10427 | return ppc_stub_plt_call; | |
10428 | } | |
5bd4f169 | 10429 | |
7fe2b9a6 AM |
10430 | /* Here, we know we don't have a plt entry. If we don't have a |
10431 | either a defined function descriptor or a defined entry symbol | |
10432 | in a regular object file, then it is pointless trying to make | |
10433 | any other type of stub. */ | |
854b41e7 AM |
10434 | if (!is_static_defined (&fdh->elf) |
10435 | && !is_static_defined (&h->elf)) | |
721956f4 | 10436 | return ppc_stub_none; |
5d1634d7 | 10437 | } |
e054468f AM |
10438 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10439 | { | |
10440 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10441 | struct plt_entry **local_plt = (struct plt_entry **) | |
10442 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10443 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10444 | ||
10445 | if (local_plt[r_symndx] != NULL) | |
10446 | { | |
10447 | struct plt_entry *ent; | |
10448 | ||
10449 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10450 | if (ent->addend == rel->r_addend | |
10451 | && ent->plt.offset != (bfd_vma) -1) | |
10452 | { | |
10453 | *plt_ent = ent; | |
10454 | return ppc_stub_plt_call; | |
10455 | } | |
10456 | } | |
10457 | } | |
5d1634d7 | 10458 | |
721956f4 AM |
10459 | /* Determine where the call point is. */ |
10460 | location = (input_sec->output_offset | |
10461 | + input_sec->output_section->vma | |
10462 | + rel->r_offset); | |
5d1634d7 | 10463 | |
721956f4 AM |
10464 | branch_offset = destination - location; |
10465 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10466 | |
721956f4 AM |
10467 | /* Determine if a long branch stub is needed. */ |
10468 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10469 | if (r_type == R_PPC64_REL14 |
10470 | || r_type == R_PPC64_REL14_BRTAKEN | |
10471 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10472 | max_branch_offset = 1 << 15; |
5d1634d7 | 10473 | |
6911b7dc | 10474 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10475 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10476 | is needed later. */ | |
10477 | return ppc_stub_long_branch; | |
5d1634d7 | 10478 | |
721956f4 | 10479 | return ppc_stub_none; |
5d1634d7 AM |
10480 | } |
10481 | ||
f891966f AM |
10482 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10483 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10484 | . mflr %r12 | |
10485 | . bcl 20,31,1f | |
10486 | .1: mflr %r11 | |
10487 | . mtlr %r12 | |
05d0e962 | 10488 | . lis %r12,xxx-1b@highest |
f891966f | 10489 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10490 | . sldi %r12,%r12,32 |
f891966f | 10491 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10492 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10493 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10494 | |
10495 | static bfd_byte * | |
10496 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10497 | { | |
f891966f AM |
10498 | bfd_put_32 (abfd, MFLR_R12, p); |
10499 | p += 4; | |
10500 | bfd_put_32 (abfd, BCL_20_31, p); | |
10501 | p += 4; | |
10502 | bfd_put_32 (abfd, MFLR_R11, p); | |
10503 | p += 4; | |
10504 | bfd_put_32 (abfd, MTLR_R12, p); | |
10505 | p += 4; | |
05d0e962 AM |
10506 | if (off + 0x8000 < 0x10000) |
10507 | { | |
10508 | if (load) | |
10509 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10510 | else | |
10511 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10512 | p += 4; | |
10513 | } | |
10514 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10515 | { | |
10516 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10517 | p += 4; | |
10518 | if (load) | |
10519 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10520 | else | |
10521 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10522 | p += 4; | |
10523 | } | |
10524 | else | |
10525 | { | |
10526 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10527 | { | |
10528 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10529 | p += 4; | |
10530 | } | |
10531 | else | |
10532 | { | |
10533 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10534 | p += 4; | |
10535 | if (((off >> 32) & 0xffff) != 0) | |
10536 | { | |
10537 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10538 | p += 4; | |
10539 | } | |
10540 | } | |
10541 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10542 | { | |
10543 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10544 | p += 4; | |
10545 | } | |
10546 | if (PPC_HI (off) != 0) | |
10547 | { | |
10548 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10549 | p += 4; | |
10550 | } | |
10551 | if (PPC_LO (off) != 0) | |
10552 | { | |
10553 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10554 | p += 4; | |
10555 | } | |
10556 | if (load) | |
10557 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10558 | else | |
10559 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10560 | p += 4; | |
10561 | } | |
10562 | return p; | |
10563 | } | |
10564 | ||
10565 | static unsigned int | |
10566 | size_offset (bfd_vma off) | |
10567 | { | |
10568 | unsigned int size; | |
10569 | if (off + 0x8000 < 0x10000) | |
10570 | size = 4; | |
10571 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10572 | size = 8; | |
10573 | else | |
10574 | { | |
10575 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10576 | size = 4; | |
10577 | else | |
10578 | { | |
10579 | size = 4; | |
10580 | if (((off >> 32) & 0xffff) != 0) | |
10581 | size += 4; | |
10582 | } | |
10583 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10584 | size += 4; | |
10585 | if (PPC_HI (off) != 0) | |
10586 | size += 4; | |
10587 | if (PPC_LO (off) != 0) | |
10588 | size += 4; | |
10589 | size += 4; | |
10590 | } | |
f891966f | 10591 | return size + 16; |
05d0e962 AM |
10592 | } |
10593 | ||
3d58e1fc AM |
10594 | static unsigned int |
10595 | num_relocs_for_offset (bfd_vma off) | |
10596 | { | |
10597 | unsigned int num_rel; | |
10598 | if (off + 0x8000 < 0x10000) | |
10599 | num_rel = 1; | |
10600 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10601 | num_rel = 2; | |
10602 | else | |
10603 | { | |
10604 | num_rel = 1; | |
10605 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10606 | && ((off >> 32) & 0xffff) != 0) | |
10607 | num_rel += 1; | |
10608 | if (PPC_HI (off) != 0) | |
10609 | num_rel += 1; | |
10610 | if (PPC_LO (off) != 0) | |
10611 | num_rel += 1; | |
10612 | } | |
10613 | return num_rel; | |
10614 | } | |
10615 | ||
10616 | static Elf_Internal_Rela * | |
10617 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10618 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10619 | { | |
10620 | bfd_vma relative_targ = targ - (roff - 8); | |
10621 | if (bfd_big_endian (info->output_bfd)) | |
10622 | roff += 2; | |
10623 | r->r_offset = roff; | |
10624 | r->r_addend = relative_targ + roff; | |
10625 | if (off + 0x8000 < 0x10000) | |
10626 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10627 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10628 | { | |
10629 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10630 | ++r; | |
10631 | roff += 4; | |
10632 | r->r_offset = roff; | |
10633 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10634 | r->r_addend = relative_targ + roff; | |
10635 | } | |
10636 | else | |
10637 | { | |
10638 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10639 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10640 | else | |
10641 | { | |
10642 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10643 | if (((off >> 32) & 0xffff) != 0) | |
10644 | { | |
10645 | ++r; | |
10646 | roff += 4; | |
10647 | r->r_offset = roff; | |
10648 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10649 | r->r_addend = relative_targ + roff; | |
10650 | } | |
10651 | } | |
10652 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10653 | roff += 4; | |
10654 | if (PPC_HI (off) != 0) | |
10655 | { | |
10656 | ++r; | |
10657 | roff += 4; | |
10658 | r->r_offset = roff; | |
10659 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10660 | r->r_addend = relative_targ + roff; | |
10661 | } | |
10662 | if (PPC_LO (off) != 0) | |
10663 | { | |
10664 | ++r; | |
10665 | roff += 4; | |
10666 | r->r_offset = roff; | |
10667 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10668 | r->r_addend = relative_targ + roff; | |
10669 | } | |
10670 | } | |
10671 | return r; | |
10672 | } | |
10673 | ||
04bdff6a | 10674 | static bfd_byte * |
7c1f4227 | 10675 | build_power10_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, |
04bdff6a AM |
10676 | bfd_boolean load) |
10677 | { | |
10678 | uint64_t insn; | |
10679 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10680 | { | |
10681 | off -= odd; | |
10682 | if (odd) | |
10683 | { | |
10684 | bfd_put_32 (abfd, NOP, p); | |
10685 | p += 4; | |
10686 | } | |
10687 | if (load) | |
10688 | insn = PLD_R12_PC; | |
10689 | else | |
10690 | insn = PADDI_R12_PC; | |
10691 | insn |= D34 (off); | |
10692 | bfd_put_32 (abfd, insn >> 32, p); | |
10693 | p += 4; | |
10694 | bfd_put_32 (abfd, insn, p); | |
10695 | } | |
10696 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10697 | for li is -0x8000, which when shifted by 34 and added gives a | |
10698 | minimum value of -0x2000200000000. The maximum value is | |
10699 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10700 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10701 | { | |
10702 | off -= 8 - odd; | |
10703 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10704 | p += 4; | |
10705 | if (!odd) | |
10706 | { | |
10707 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10708 | p += 4; | |
10709 | } | |
10710 | insn = PADDI_R12_PC | D34 (off); | |
10711 | bfd_put_32 (abfd, insn >> 32, p); | |
10712 | p += 4; | |
10713 | bfd_put_32 (abfd, insn, p); | |
10714 | p += 4; | |
10715 | if (odd) | |
10716 | { | |
10717 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10718 | p += 4; | |
10719 | } | |
10720 | if (load) | |
10721 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10722 | else | |
10723 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10724 | } | |
10725 | else | |
10726 | { | |
10727 | off -= odd + 8; | |
10728 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10729 | p += 4; | |
10730 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10731 | p += 4; | |
10732 | if (odd) | |
10733 | { | |
10734 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10735 | p += 4; | |
10736 | } | |
10737 | insn = PADDI_R12_PC | D34 (off); | |
10738 | bfd_put_32 (abfd, insn >> 32, p); | |
10739 | p += 4; | |
10740 | bfd_put_32 (abfd, insn, p); | |
10741 | p += 4; | |
10742 | if (!odd) | |
10743 | { | |
10744 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10745 | p += 4; | |
10746 | } | |
10747 | if (load) | |
10748 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10749 | else | |
10750 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10751 | } | |
10752 | p += 4; | |
10753 | return p; | |
10754 | } | |
10755 | ||
10756 | static unsigned int | |
7c1f4227 | 10757 | size_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10758 | { |
10759 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10760 | return odd + 8; | |
10761 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10762 | return 20; | |
10763 | else | |
10764 | return 24; | |
10765 | } | |
10766 | ||
10767 | static unsigned int | |
7c1f4227 | 10768 | num_relocs_for_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10769 | { |
10770 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10771 | return 1; | |
10772 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10773 | return 2; | |
10774 | else | |
10775 | return 3; | |
10776 | } | |
10777 | ||
10778 | static Elf_Internal_Rela * | |
7c1f4227 | 10779 | emit_relocs_for_power10_offset (struct bfd_link_info *info, |
04bdff6a AM |
10780 | Elf_Internal_Rela *r, bfd_vma roff, |
10781 | bfd_vma targ, bfd_vma off, int odd) | |
10782 | { | |
10783 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10784 | roff += odd; | |
10785 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10786 | { | |
10787 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10788 | r->r_offset = roff + d_offset; | |
10789 | r->r_addend = targ + 8 - odd - d_offset; | |
10790 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10791 | ++r; | |
10792 | roff += 8 - odd; | |
10793 | } | |
10794 | else | |
10795 | { | |
10796 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10797 | r->r_offset = roff + d_offset; | |
10798 | r->r_addend = targ + 8 + odd - d_offset; | |
10799 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10800 | ++r; | |
10801 | roff += 4; | |
10802 | r->r_offset = roff + d_offset; | |
10803 | r->r_addend = targ + 4 + odd - d_offset; | |
10804 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10805 | ++r; | |
10806 | roff += 4 + odd; | |
10807 | } | |
10808 | r->r_offset = roff; | |
10809 | r->r_addend = targ; | |
10810 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10811 | return r; | |
10812 | } | |
10813 | ||
df136d64 AM |
10814 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10815 | ||
10816 | static bfd_byte * | |
10817 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10818 | { | |
10819 | delta /= 4; | |
10820 | if (delta < 64) | |
10821 | *eh++ = DW_CFA_advance_loc + delta; | |
10822 | else if (delta < 256) | |
10823 | { | |
10824 | *eh++ = DW_CFA_advance_loc1; | |
10825 | *eh++ = delta; | |
10826 | } | |
10827 | else if (delta < 65536) | |
10828 | { | |
10829 | *eh++ = DW_CFA_advance_loc2; | |
10830 | bfd_put_16 (abfd, delta, eh); | |
10831 | eh += 2; | |
10832 | } | |
10833 | else | |
10834 | { | |
10835 | *eh++ = DW_CFA_advance_loc4; | |
10836 | bfd_put_32 (abfd, delta, eh); | |
10837 | eh += 4; | |
10838 | } | |
10839 | return eh; | |
10840 | } | |
10841 | ||
10842 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10843 | ||
10844 | static unsigned int | |
10845 | eh_advance_size (unsigned int delta) | |
10846 | { | |
10847 | if (delta < 64 * 4) | |
10848 | /* DW_CFA_advance_loc+[1..63]. */ | |
10849 | return 1; | |
10850 | if (delta < 256 * 4) | |
10851 | /* DW_CFA_advance_loc1, byte. */ | |
10852 | return 2; | |
10853 | if (delta < 65536 * 4) | |
10854 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10855 | return 3; | |
10856 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10857 | return 5; | |
10858 | } | |
10859 | ||
794e51c0 AM |
10860 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10861 | to update a plt entry in one thread and have another thread see a | |
10862 | stale zero toc entry. To avoid this we need some sort of acquire | |
10863 | barrier in the call stub. One solution is to make the load of the | |
10864 | toc word seem to appear to depend on the load of the function entry | |
10865 | word. Another solution is to test for r2 being zero, and branch to | |
10866 | the appropriate glink entry if so. | |
10867 | ||
10868 | . fake dep barrier compare | |
71a39c98 AM |
10869 | . ld 12,xxx(2) ld 12,xxx(2) |
10870 | . mtctr 12 mtctr 12 | |
10871 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10872 | . add 2,2,11 cmpldi 2,0 |
10873 | . ld 2,xxx+8(2) bnectr+ | |
10874 | . bctr b <glink_entry> | |
10875 | ||
10876 | The solution involving the compare turns out to be faster, so | |
10877 | that's what we use unless the branch won't reach. */ | |
10878 | ||
10879 | #define ALWAYS_USE_FAKE_DEP 0 | |
10880 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10881 | |
794e51c0 AM |
10882 | static inline unsigned int |
10883 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10884 | struct ppc_stub_hash_entry *stub_entry, | |
29433886 AM |
10885 | bfd_vma off, |
10886 | unsigned int odd) | |
794e51c0 | 10887 | { |
05d0e962 | 10888 | unsigned size; |
b9e5796b | 10889 | |
05d0e962 AM |
10890 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10891 | { | |
e10a07b3 | 10892 | if (htab->params->power10_stubs != 0) |
29433886 | 10893 | size = 8 + size_power10_offset (off, odd); |
04bdff6a AM |
10894 | else |
10895 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10896 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10897 | size += 4; | |
05d0e962 | 10898 | } |
29433886 | 10899 | else |
b9e5796b | 10900 | { |
29433886 AM |
10901 | size = 12; |
10902 | if (ALWAYS_EMIT_R2SAVE | |
10903 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
b9e5796b | 10904 | size += 4; |
29433886 | 10905 | if (PPC_HA (off) != 0) |
b9e5796b | 10906 | size += 4; |
29433886 AM |
10907 | if (htab->opd_abi) |
10908 | { | |
10909 | size += 4; | |
10910 | if (htab->params->plt_static_chain) | |
10911 | size += 4; | |
10912 | if (htab->params->plt_thread_safe | |
10913 | && htab->elf.dynamic_sections_created | |
10914 | && stub_entry->h != NULL | |
10915 | && stub_entry->h->elf.dynindx != -1) | |
10916 | size += 8; | |
10917 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) | |
10918 | != PPC_HA (off)) | |
10919 | size += 4; | |
10920 | } | |
b9e5796b | 10921 | } |
794e51c0 | 10922 | if (stub_entry->h != NULL |
ed7007c1 | 10923 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10924 | && htab->params->tls_get_addr_opt) |
f378ab09 | 10925 | { |
29433886 | 10926 | if (!htab->params->no_tls_get_addr_regsave) |
9e7028aa | 10927 | { |
29433886 AM |
10928 | size += 30 * 4; |
10929 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
10930 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10931 | size += 4; | |
9e7028aa AM |
10932 | } |
10933 | else | |
10934 | { | |
29433886 AM |
10935 | size += 7 * 4; |
10936 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
10937 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10938 | size += 6 * 4; | |
9e7028aa | 10939 | } |
f378ab09 | 10940 | } |
794e51c0 AM |
10941 | return size; |
10942 | } | |
10943 | ||
2420fff6 AM |
10944 | /* Depending on the sign of plt_stub_align: |
10945 | If positive, return the padding to align to a 2**plt_stub_align | |
10946 | boundary. | |
10947 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10948 | boundaries if we align, then return the padding needed to do so. */ | |
10949 | ||
794e51c0 AM |
10950 | static inline unsigned int |
10951 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10952 | struct ppc_stub_hash_entry *stub_entry, | |
29433886 AM |
10953 | bfd_vma plt_off, |
10954 | unsigned int odd) | |
794e51c0 | 10955 | { |
2420fff6 | 10956 | int stub_align; |
1aa42141 | 10957 | unsigned stub_size; |
6f20ed8a | 10958 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10959 | |
2420fff6 AM |
10960 | if (htab->params->plt_stub_align >= 0) |
10961 | { | |
10962 | stub_align = 1 << htab->params->plt_stub_align; | |
10963 | if ((stub_off & (stub_align - 1)) != 0) | |
10964 | return stub_align - (stub_off & (stub_align - 1)); | |
10965 | return 0; | |
10966 | } | |
10967 | ||
10968 | stub_align = 1 << -htab->params->plt_stub_align; | |
29433886 | 10969 | stub_size = plt_stub_size (htab, stub_entry, plt_off, odd); |
794e51c0 | 10970 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10971 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10972 | return stub_align - (stub_off & (stub_align - 1)); |
10973 | return 0; | |
10974 | } | |
10975 | ||
10976 | /* Build a .plt call stub. */ | |
10977 | ||
10978 | static inline bfd_byte * | |
10979 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10980 | struct ppc_stub_hash_entry *stub_entry, | |
10981 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10982 | { | |
e7d1c40c | 10983 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10984 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10985 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10986 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10987 | && htab->elf.dynamic_sections_created | |
10988 | && stub_entry->h != NULL | |
10989 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10990 | bfd_boolean use_fake_dep = plt_thread_safe; |
10991 | bfd_vma cmp_branch_off = 0; | |
10992 | ||
10993 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10994 | && plt_load_toc |
794e51c0 | 10995 | && plt_thread_safe |
9e51d549 AM |
10996 | && !(stub_entry->h != NULL |
10997 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
7c9cf415 | 10998 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10999 | { |
11000 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
11001 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
11002 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 11003 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
11004 | bfd_vma to, from; |
11005 | ||
68d62958 AM |
11006 | if (pltindex > 32768) |
11007 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
11008 | to = (glinkoff |
11009 | + htab->glink->output_offset | |
11010 | + htab->glink->output_section->vma); | |
6f20ed8a | 11011 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
11012 | + 4 * (ALWAYS_EMIT_R2SAVE |
11013 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11014 | + 4 * (PPC_HA (offset) != 0) | |
11015 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
11016 | != PPC_HA (offset)) | |
11017 | + 4 * (plt_static_chain != 0) | |
11018 | + 20 | |
6f20ed8a AM |
11019 | + stub_entry->group->stub_sec->output_offset |
11020 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
11021 | cmp_branch_off = to - from; |
11022 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
11023 | } | |
11024 | ||
ac2df442 AM |
11025 | if (PPC_HA (offset) != 0) |
11026 | { | |
176a0d42 AM |
11027 | if (r != NULL) |
11028 | { | |
794e51c0 AM |
11029 | if (ALWAYS_EMIT_R2SAVE |
11030 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11031 | r[0].r_offset += 4; | |
176a0d42 | 11032 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 11033 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
11034 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
11035 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 11036 | if (plt_load_toc) |
176a0d42 | 11037 | { |
b9e5796b | 11038 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11039 | { |
b9e5796b AM |
11040 | r[2].r_offset = r[1].r_offset + 4; |
11041 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
11042 | r[2].r_addend = r[0].r_addend; | |
11043 | } | |
11044 | else | |
11045 | { | |
11046 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
11047 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11048 | r[2].r_addend = r[0].r_addend + 8; | |
11049 | if (plt_static_chain) | |
11050 | { | |
11051 | r[3].r_offset = r[2].r_offset + 4; | |
11052 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11053 | r[3].r_addend = r[0].r_addend + 16; | |
11054 | } | |
c7131b65 | 11055 | } |
176a0d42 AM |
11056 | } |
11057 | } | |
794e51c0 AM |
11058 | if (ALWAYS_EMIT_R2SAVE |
11059 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11060 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
11061 | if (plt_load_toc) |
11062 | { | |
11063 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
11064 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
11065 | } | |
11066 | else | |
11067 | { | |
11068 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
11069 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
11070 | } | |
b9e5796b AM |
11071 | if (plt_load_toc |
11072 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 11073 | { |
71a39c98 | 11074 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
11075 | offset = 0; |
11076 | } | |
71a39c98 | 11077 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11078 | if (plt_load_toc) |
794e51c0 | 11079 | { |
b9e5796b AM |
11080 | if (use_fake_dep) |
11081 | { | |
11082 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
11083 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
11084 | } | |
11085 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
11086 | if (plt_static_chain) | |
11087 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 11088 | } |
ac2df442 AM |
11089 | } |
11090 | else | |
11091 | { | |
176a0d42 AM |
11092 | if (r != NULL) |
11093 | { | |
794e51c0 AM |
11094 | if (ALWAYS_EMIT_R2SAVE |
11095 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11096 | r[0].r_offset += 4; | |
176a0d42 | 11097 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 11098 | if (plt_load_toc) |
176a0d42 | 11099 | { |
b9e5796b | 11100 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11101 | { |
b9e5796b AM |
11102 | r[1].r_offset = r[0].r_offset + 4; |
11103 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
11104 | r[1].r_addend = r[0].r_addend; | |
11105 | } | |
11106 | else | |
11107 | { | |
11108 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
11109 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11110 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
11111 | if (plt_static_chain) | |
11112 | { | |
11113 | r[2].r_offset = r[1].r_offset + 4; | |
11114 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11115 | r[2].r_addend = r[0].r_addend + 8; | |
11116 | } | |
c7131b65 | 11117 | } |
176a0d42 AM |
11118 | } |
11119 | } | |
794e51c0 AM |
11120 | if (ALWAYS_EMIT_R2SAVE |
11121 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11122 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11123 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11124 | if (plt_load_toc |
11125 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11126 | { |
11127 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11128 | offset = 0; | |
11129 | } | |
71a39c98 | 11130 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11131 | if (plt_load_toc) |
794e51c0 | 11132 | { |
b9e5796b AM |
11133 | if (use_fake_dep) |
11134 | { | |
11135 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11136 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11137 | } | |
11138 | if (plt_static_chain) | |
11139 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11140 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11141 | } |
ac2df442 | 11142 | } |
b9e5796b | 11143 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11144 | { |
11145 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11146 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11147 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11148 | } |
11149 | else | |
407aa07c | 11150 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11151 | return p; |
11152 | } | |
11153 | ||
a7f2871e AM |
11154 | /* Build a special .plt call stub for __tls_get_addr. */ |
11155 | ||
b9ca1af6 | 11156 | #define LD_R0_0R3 0xe8030000 |
a7f2871e AM |
11157 | #define LD_R12_0R3 0xe9830000 |
11158 | #define MR_R0_R3 0x7c601b78 | |
b9ca1af6 | 11159 | #define CMPDI_R0_0 0x2c200000 |
a7f2871e AM |
11160 | #define ADD_R3_R12_R13 0x7c6c6a14 |
11161 | #define BEQLR 0x4d820020 | |
11162 | #define MR_R3_R0 0x7c030378 | |
a7f2871e | 11163 | #define BCTRL 0x4e800421 |
a7f2871e | 11164 | |
29433886 AM |
11165 | static bfd_byte * |
11166 | build_tls_get_addr_head (struct ppc_link_hash_table *htab, | |
794e51c0 | 11167 | struct ppc_stub_hash_entry *stub_entry, |
29433886 | 11168 | bfd_byte *p) |
a7f2871e | 11169 | { |
e7d1c40c | 11170 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11171 | |
b9ca1af6 | 11172 | bfd_put_32 (obfd, LD_R0_0R3 + 0, p), p += 4; |
a7f2871e | 11173 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; |
b9ca1af6 | 11174 | bfd_put_32 (obfd, CMPDI_R0_0, p), p += 4; |
a7f2871e | 11175 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; |
a7f2871e AM |
11176 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; |
11177 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11178 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9e7028aa | 11179 | |
29433886 AM |
11180 | if (!htab->params->no_tls_get_addr_regsave) |
11181 | p = tls_get_addr_prologue (obfd, p, htab); | |
11182 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11183 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11184 | { | |
9e7028aa AM |
11185 | bfd_put_32 (obfd, MFLR_R0, p); |
11186 | p += 4; | |
11187 | bfd_put_32 (obfd, STD_R0_0R1 + STK_LINKER (htab), p); | |
11188 | p += 4; | |
29433886 AM |
11189 | } |
11190 | return p; | |
11191 | } | |
9e7028aa | 11192 | |
29433886 AM |
11193 | static bfd_byte * |
11194 | build_tls_get_addr_tail (struct ppc_link_hash_table *htab, | |
11195 | struct ppc_stub_hash_entry *stub_entry, | |
11196 | bfd_byte *p, | |
11197 | bfd_byte *loc) | |
11198 | { | |
11199 | bfd *obfd = htab->params->stub_bfd; | |
11200 | ||
11201 | if (!htab->params->no_tls_get_addr_regsave) | |
11202 | { | |
11203 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11204 | ||
11205 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11206 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11207 | { | |
11208 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11209 | p += 4; | |
11210 | } | |
11211 | p = tls_get_addr_epilogue (obfd, p, htab); | |
11212 | } | |
11213 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11214 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11215 | { | |
9e7028aa AM |
11216 | bfd_put_32 (obfd, BCTRL, p - 4); |
11217 | ||
11218 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11219 | p += 4; | |
11220 | bfd_put_32 (obfd, LD_R0_0R1 + STK_LINKER (htab), p); | |
11221 | p += 4; | |
11222 | bfd_put_32 (obfd, MTLR_R0, p); | |
11223 | p += 4; | |
11224 | bfd_put_32 (obfd, BLR, p); | |
11225 | p += 4; | |
11226 | } | |
a7f2871e | 11227 | |
df136d64 AM |
11228 | if (htab->glink_eh_frame != NULL |
11229 | && htab->glink_eh_frame->size != 0) | |
11230 | { | |
11231 | bfd_byte *base, *eh; | |
df136d64 AM |
11232 | |
11233 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11234 | eh = base + stub_entry->group->eh_size; | |
29433886 AM |
11235 | |
11236 | if (!htab->params->no_tls_get_addr_regsave) | |
9e7028aa | 11237 | { |
29433886 AM |
11238 | unsigned int cfa_updt, delta, i; |
11239 | ||
9e7028aa AM |
11240 | /* After the bctrl, lr has been modified so we need to emit |
11241 | .eh_frame info saying the return address is on the stack. In | |
11242 | fact we must put the EH info at or before the call rather | |
11243 | than after it, because the EH info for a call needs to be | |
11244 | specified by that point. | |
11245 | See libgcc/unwind-dw2.c execute_cfa_program. | |
11246 | Any stack pointer update must be described immediately after | |
11247 | the instruction making the change, and since the stdu occurs | |
11248 | after saving regs we put all the reg saves and the cfa | |
11249 | change there. */ | |
11250 | cfa_updt = stub_entry->stub_offset + 18 * 4; | |
11251 | delta = cfa_updt - stub_entry->group->lr_restore; | |
11252 | stub_entry->group->lr_restore | |
11253 | = stub_entry->stub_offset + (p - loc) - 4; | |
11254 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11255 | *eh++ = DW_CFA_def_cfa_offset; | |
11256 | if (htab->opd_abi) | |
11257 | { | |
11258 | *eh++ = 128; | |
11259 | *eh++ = 1; | |
11260 | } | |
11261 | else | |
11262 | *eh++ = 96; | |
11263 | *eh++ = DW_CFA_offset_extended_sf; | |
11264 | *eh++ = 65; | |
11265 | *eh++ = (-16 / 8) & 0x7f; | |
11266 | for (i = 4; i < 12; i++) | |
11267 | { | |
11268 | *eh++ = DW_CFA_offset + i; | |
11269 | *eh++ = (htab->opd_abi ? 13 : 12) - i; | |
11270 | } | |
11271 | *eh++ = (DW_CFA_advance_loc | |
11272 | + (stub_entry->group->lr_restore - 8 - cfa_updt) / 4); | |
11273 | *eh++ = DW_CFA_def_cfa_offset; | |
11274 | *eh++ = 0; | |
11275 | for (i = 4; i < 12; i++) | |
11276 | *eh++ = DW_CFA_restore + i; | |
11277 | *eh++ = DW_CFA_advance_loc + 2; | |
29433886 AM |
11278 | *eh++ = DW_CFA_restore_extended; |
11279 | *eh++ = 65; | |
11280 | stub_entry->group->eh_size = eh - base; | |
11281 | } | |
11282 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11283 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11284 | { | |
11285 | unsigned int lr_used, delta; | |
11286 | ||
11287 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11288 | delta = lr_used - stub_entry->group->lr_restore; | |
11289 | stub_entry->group->lr_restore = lr_used + 16; | |
11290 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11291 | *eh++ = DW_CFA_offset_extended_sf; | |
11292 | *eh++ = 65; | |
11293 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11294 | *eh++ = DW_CFA_advance_loc + 4; | |
11295 | *eh++ = DW_CFA_restore_extended; | |
11296 | *eh++ = 65; | |
11297 | stub_entry->group->eh_size = eh - base; | |
9e7028aa | 11298 | } |
df136d64 | 11299 | } |
a7f2871e AM |
11300 | return p; |
11301 | } | |
11302 | ||
176a0d42 AM |
11303 | static Elf_Internal_Rela * |
11304 | get_relocs (asection *sec, int count) | |
11305 | { | |
11306 | Elf_Internal_Rela *relocs; | |
11307 | struct bfd_elf_section_data *elfsec_data; | |
11308 | ||
11309 | elfsec_data = elf_section_data (sec); | |
11310 | relocs = elfsec_data->relocs; | |
11311 | if (relocs == NULL) | |
11312 | { | |
11313 | bfd_size_type relsize; | |
11314 | relsize = sec->reloc_count * sizeof (*relocs); | |
11315 | relocs = bfd_alloc (sec->owner, relsize); | |
11316 | if (relocs == NULL) | |
11317 | return NULL; | |
11318 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11319 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11320 | sizeof (Elf_Internal_Shdr)); | |
11321 | if (elfsec_data->rela.hdr == NULL) | |
11322 | return NULL; | |
11323 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11324 | * sizeof (Elf64_External_Rela)); | |
11325 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11326 | sec->reloc_count = 0; |
11327 | } | |
11328 | relocs += sec->reloc_count; | |
11329 | sec->reloc_count += count; | |
11330 | return relocs; | |
11331 | } | |
11332 | ||
3d58e1fc AM |
11333 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
11334 | forms, to the equivalent relocs against the global symbol given by | |
11335 | STUB_ENTRY->H. */ | |
11336 | ||
11337 | static bfd_boolean | |
11338 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
11339 | struct ppc_stub_hash_entry *stub_entry, | |
11340 | Elf_Internal_Rela *r, unsigned int num_rel) | |
11341 | { | |
11342 | struct elf_link_hash_entry **hashes; | |
11343 | unsigned long symndx; | |
11344 | struct ppc_link_hash_entry *h; | |
11345 | bfd_vma symval; | |
11346 | ||
11347 | /* Relocs are always against symbols in their own object file. Fake | |
11348 | up global sym hashes for the stub bfd (which has no symbols). */ | |
11349 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
11350 | if (hashes == NULL) | |
11351 | { | |
11352 | bfd_size_type hsize; | |
11353 | ||
11354 | /* When called the first time, stub_globals will contain the | |
11355 | total number of symbols seen during stub sizing. After | |
11356 | allocating, stub_globals is used as an index to fill the | |
11357 | hashes array. */ | |
11358 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11359 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11360 | if (hashes == NULL) | |
11361 | return FALSE; | |
11362 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
11363 | htab->stub_globals = 1; | |
11364 | } | |
11365 | symndx = htab->stub_globals++; | |
11366 | h = stub_entry->h; | |
11367 | hashes[symndx] = &h->elf; | |
11368 | if (h->oh != NULL && h->oh->is_func) | |
11369 | h = ppc_follow_link (h->oh); | |
11370 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11371 | || h->elf.root.type == bfd_link_hash_defweak); | |
ed7007c1 | 11372 | symval = defined_sym_val (&h->elf); |
3d58e1fc AM |
11373 | while (num_rel-- != 0) |
11374 | { | |
11375 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11376 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11377 | { | |
11378 | /* H is an opd symbol. The addend must be zero, and the | |
11379 | branch reloc is the only one we can convert. */ | |
11380 | r->r_addend = 0; | |
11381 | break; | |
11382 | } | |
11383 | else | |
11384 | r->r_addend -= symval; | |
11385 | --r; | |
11386 | } | |
11387 | return TRUE; | |
11388 | } | |
11389 | ||
aa374f67 | 11390 | static bfd_vma |
25f53a85 | 11391 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11392 | struct ppc_stub_hash_entry *stub_entry) |
11393 | { | |
25f53a85 | 11394 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11395 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11396 | |
11397 | if (r2off == 0) | |
11398 | { | |
11399 | /* Support linking -R objects. Get the toc pointer from the | |
11400 | opd entry. */ | |
11401 | char buf[8]; | |
b9e5796b AM |
11402 | if (!htab->opd_abi) |
11403 | return r2off; | |
aa374f67 AM |
11404 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11405 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11406 | ||
11407 | if (strcmp (opd->name, ".opd") != 0 | |
11408 | || opd->reloc_count != 0) | |
11409 | { | |
2cdcc330 AM |
11410 | info->callbacks->einfo |
11411 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11412 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11413 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11414 | return (bfd_vma) -1; |
aa374f67 AM |
11415 | } |
11416 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11417 | return (bfd_vma) -1; |
aa374f67 | 11418 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11419 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11420 | } |
6f20ed8a | 11421 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11422 | return r2off; |
11423 | } | |
11424 | ||
b34976b6 | 11425 | static bfd_boolean |
4ce794b7 | 11426 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11427 | { |
721956f4 AM |
11428 | struct ppc_stub_hash_entry *stub_entry; |
11429 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11430 | struct bfd_link_info *info; |
11431 | struct ppc_link_hash_table *htab; | |
29433886 | 11432 | bfd *obfd; |
721956f4 | 11433 | bfd_byte *loc; |
3d58e1fc | 11434 | bfd_byte *p, *relp; |
1aa42141 | 11435 | bfd_vma targ, off; |
176a0d42 | 11436 | Elf_Internal_Rela *r; |
e054468f | 11437 | asection *plt; |
3d58e1fc | 11438 | int num_rel; |
04bdff6a | 11439 | int odd; |
29433886 | 11440 | bfd_boolean is_tga; |
5d1634d7 | 11441 | |
721956f4 AM |
11442 | /* Massage our args to the form they really have. */ |
11443 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11444 | info = in_arg; |
5d1634d7 | 11445 | |
abf874aa CL |
11446 | /* Fail if the target section could not be assigned to an output |
11447 | section. The user should fix his linker script. */ | |
11448 | if (stub_entry->target_section != NULL | |
11449 | && stub_entry->target_section->output_section == NULL | |
11450 | && info->non_contiguous_regions) | |
53215f21 CL |
11451 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
11452 | "Retry without --enable-non-contiguous-regions.\n"), | |
11453 | stub_entry->target_section); | |
abf874aa CL |
11454 | |
11455 | /* Same for the group. */ | |
11456 | if (stub_entry->group->stub_sec != NULL | |
11457 | && stub_entry->group->stub_sec->output_section == NULL | |
11458 | && info->non_contiguous_regions) | |
53215f21 CL |
11459 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11460 | "output section. Retry without " | |
11461 | "--enable-non-contiguous-regions.\n"), | |
11462 | stub_entry->group->stub_sec, | |
11463 | stub_entry->target_section); | |
abf874aa | 11464 | |
5d1634d7 | 11465 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11466 | if (htab == NULL) |
11467 | return FALSE; | |
5d1634d7 | 11468 | |
1aa42141 | 11469 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11470 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11471 | |
4ce794b7 | 11472 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11473 | switch (stub_entry->stub_type) |
5d1634d7 | 11474 | { |
721956f4 | 11475 | case ppc_stub_long_branch: |
ad8e1ba5 | 11476 | case ppc_stub_long_branch_r2off: |
721956f4 | 11477 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11478 | targ = (stub_entry->target_value |
6911b7dc AM |
11479 | + stub_entry->target_section->output_offset |
11480 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11481 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11482 | |
721956f4 | 11483 | /* And this is where we are coming from. */ |
1aa42141 AM |
11484 | off = (stub_entry->stub_offset |
11485 | + stub_entry->group->stub_sec->output_offset | |
11486 | + stub_entry->group->stub_sec->output_section->vma); | |
11487 | off = targ - off; | |
e86ce104 | 11488 | |
9e390558 | 11489 | p = loc; |
29433886 | 11490 | obfd = htab->params->stub_bfd; |
ac2df442 | 11491 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11492 | { |
25f53a85 | 11493 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11494 | |
a7c49797 | 11495 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11496 | { |
11497 | htab->stub_error = TRUE; | |
11498 | return FALSE; | |
11499 | } | |
29433886 | 11500 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11501 | p += 4; |
ac2df442 AM |
11502 | if (PPC_HA (r2off) != 0) |
11503 | { | |
29433886 | 11504 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
9e390558 | 11505 | p += 4; |
a7c49797 AM |
11506 | } |
11507 | if (PPC_LO (r2off) != 0) | |
11508 | { | |
29433886 | 11509 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
9e390558 | 11510 | p += 4; |
ac2df442 | 11511 | } |
9e390558 | 11512 | off -= p - loc; |
ad8e1ba5 | 11513 | } |
29433886 | 11514 | bfd_put_32 (obfd, B_DOT | (off & 0x3fffffc), p); |
9e390558 | 11515 | p += 4; |
ad8e1ba5 | 11516 | |
5c3dead3 AM |
11517 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11518 | { | |
cf97bcb0 AM |
11519 | _bfd_error_handler |
11520 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11521 | stub_entry->root.string); |
5c3dead3 AM |
11522 | htab->stub_error = TRUE; |
11523 | return FALSE; | |
11524 | } | |
ee75fd95 AM |
11525 | |
11526 | if (info->emitrelocations) | |
11527 | { | |
6f20ed8a | 11528 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11529 | if (r == NULL) |
11530 | return FALSE; | |
9e390558 | 11531 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11532 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11533 | r->r_addend = targ; |
3d58e1fc AM |
11534 | if (stub_entry->h != NULL |
11535 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
11536 | return FALSE; | |
ee75fd95 | 11537 | } |
721956f4 | 11538 | break; |
e86ce104 | 11539 | |
721956f4 | 11540 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11541 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11542 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11543 | stub_entry->root.string + 9, | |
b34976b6 | 11544 | FALSE, FALSE); |
721956f4 AM |
11545 | if (br_entry == NULL) |
11546 | { | |
cf97bcb0 AM |
11547 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11548 | stub_entry->root.string); | |
b34976b6 AM |
11549 | htab->stub_error = TRUE; |
11550 | return FALSE; | |
721956f4 AM |
11551 | } |
11552 | ||
1aa42141 | 11553 | targ = (stub_entry->target_value |
176a0d42 AM |
11554 | + stub_entry->target_section->output_offset |
11555 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11556 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11557 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11558 | |
1aa42141 | 11559 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11560 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11561 | |
f94498ff | 11562 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11563 | { |
f94498ff | 11564 | br_entry->iter = 0; |
84f5d08e | 11565 | |
f94498ff | 11566 | if (htab->relbrlt != NULL) |
84f5d08e | 11567 | { |
f94498ff AM |
11568 | /* Create a reloc for the branch lookup table entry. */ |
11569 | Elf_Internal_Rela rela; | |
11570 | bfd_byte *rl; | |
11571 | ||
11572 | rela.r_offset = (br_entry->offset | |
11573 | + htab->brlt->output_offset | |
11574 | + htab->brlt->output_section->vma); | |
11575 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11576 | rela.r_addend = targ; |
f94498ff AM |
11577 | |
11578 | rl = htab->relbrlt->contents; | |
11579 | rl += (htab->relbrlt->reloc_count++ | |
11580 | * sizeof (Elf64_External_Rela)); | |
11581 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11582 | } | |
11583 | else if (info->emitrelocations) | |
11584 | { | |
176a0d42 AM |
11585 | r = get_relocs (htab->brlt, 1); |
11586 | if (r == NULL) | |
11587 | return FALSE; | |
11588 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11589 | normal reloc processing. Symbols and offsets are not | |
11590 | translated from input file to output file form, so | |
11591 | set up the offset per the output file. */ | |
f94498ff AM |
11592 | r->r_offset = (br_entry->offset |
11593 | + htab->brlt->output_offset | |
11594 | + htab->brlt->output_section->vma); | |
11595 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11596 | r->r_addend = targ; |
84f5d08e | 11597 | } |
84f5d08e | 11598 | } |
721956f4 | 11599 | |
1aa42141 | 11600 | targ = (br_entry->offset |
176a0d42 AM |
11601 | + htab->brlt->output_offset |
11602 | + htab->brlt->output_section->vma); | |
11603 | ||
1aa42141 AM |
11604 | off = (elf_gp (info->output_bfd) |
11605 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11606 | off = targ - off; | |
721956f4 | 11607 | |
ad8e1ba5 | 11608 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11609 | { |
25f53a85 | 11610 | info->callbacks->einfo |
c1c8c1ef | 11611 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11612 | stub_entry->root.string); |
5d1634d7 | 11613 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11614 | htab->stub_error = TRUE; |
11615 | return FALSE; | |
5d1634d7 | 11616 | } |
41bd81ab | 11617 | |
176a0d42 AM |
11618 | if (info->emitrelocations) |
11619 | { | |
6f20ed8a | 11620 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11621 | if (r == NULL) |
11622 | return FALSE; | |
6f20ed8a | 11623 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11624 | if (bfd_big_endian (info->output_bfd)) |
11625 | r[0].r_offset += 2; | |
00f412ee | 11626 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11627 | r[0].r_offset += 4; |
11628 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11629 | r[0].r_addend = targ; |
176a0d42 AM |
11630 | if (PPC_HA (off) != 0) |
11631 | { | |
11632 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11633 | r[1].r_offset = r[0].r_offset + 4; | |
11634 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11635 | r[1].r_addend = r[0].r_addend; | |
11636 | } | |
11637 | } | |
11638 | ||
9e390558 | 11639 | p = loc; |
29433886 | 11640 | obfd = htab->params->stub_bfd; |
00f412ee | 11641 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11642 | { |
176a0d42 | 11643 | if (PPC_HA (off) != 0) |
ac2df442 | 11644 | { |
29433886 | 11645 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11646 | p += 4; |
29433886 | 11647 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11648 | } |
11649 | else | |
29433886 | 11650 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ad8e1ba5 AM |
11651 | } |
11652 | else | |
11653 | { | |
25f53a85 | 11654 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11655 | |
a7c49797 | 11656 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11657 | { |
11658 | htab->stub_error = TRUE; | |
11659 | return FALSE; | |
11660 | } | |
ad8e1ba5 | 11661 | |
29433886 | 11662 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11663 | p += 4; |
176a0d42 | 11664 | if (PPC_HA (off) != 0) |
ac2df442 | 11665 | { |
29433886 | 11666 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11667 | p += 4; |
29433886 | 11668 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11669 | } |
11670 | else | |
29433886 | 11671 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11672 | |
11673 | if (PPC_HA (r2off) != 0) | |
11674 | { | |
9e390558 | 11675 | p += 4; |
29433886 | 11676 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11677 | } |
11678 | if (PPC_LO (r2off) != 0) | |
11679 | { | |
9e390558 | 11680 | p += 4; |
29433886 | 11681 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11682 | } |
ad8e1ba5 | 11683 | } |
9e390558 | 11684 | p += 4; |
29433886 | 11685 | bfd_put_32 (obfd, MTCTR_R12, p); |
9e390558 | 11686 | p += 4; |
29433886 | 11687 | bfd_put_32 (obfd, BCTR, p); |
407aa07c | 11688 | p += 4; |
721956f4 | 11689 | break; |
5d1634d7 | 11690 | |
05d0e962 AM |
11691 | case ppc_stub_long_branch_notoc: |
11692 | case ppc_stub_long_branch_both: | |
11693 | case ppc_stub_plt_branch_notoc: | |
11694 | case ppc_stub_plt_branch_both: | |
11695 | case ppc_stub_plt_call_notoc: | |
11696 | case ppc_stub_plt_call_both: | |
11697 | p = loc; | |
f891966f | 11698 | off = (stub_entry->stub_offset |
05d0e962 AM |
11699 | + stub_entry->group->stub_sec->output_offset |
11700 | + stub_entry->group->stub_sec->output_section->vma); | |
29433886 AM |
11701 | obfd = htab->params->stub_bfd; |
11702 | is_tga = ((stub_entry->stub_type == ppc_stub_plt_call_notoc | |
11703 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
12cf8b93 | 11704 | && stub_entry->h != NULL |
29433886 AM |
11705 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
11706 | && htab->params->tls_get_addr_opt); | |
11707 | if (is_tga) | |
11708 | { | |
11709 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
11710 | off += p - loc; | |
11711 | } | |
05d0e962 AM |
11712 | if (stub_entry->stub_type == ppc_stub_long_branch_both |
11713 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11714 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11715 | { | |
11716 | off += 4; | |
29433886 | 11717 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
05d0e962 AM |
11718 | p += 4; |
11719 | } | |
11720 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11721 | { | |
11722 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11723 | if (targ >= (bfd_vma) -2) | |
11724 | abort (); | |
11725 | ||
11726 | plt = htab->elf.splt; | |
30845f11 | 11727 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
05d0e962 AM |
11728 | { |
11729 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11730 | plt = htab->elf.iplt; | |
11731 | else | |
11732 | plt = htab->pltlocal; | |
11733 | } | |
11734 | targ += plt->output_offset + plt->output_section->vma; | |
11735 | } | |
11736 | else | |
11737 | targ = (stub_entry->target_value | |
11738 | + stub_entry->target_section->output_offset | |
11739 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11740 | odd = off & 4; |
05d0e962 | 11741 | off = targ - off; |
f891966f | 11742 | |
3d58e1fc AM |
11743 | relp = p; |
11744 | num_rel = 0; | |
e10a07b3 | 11745 | if (htab->params->power10_stubs != 0) |
04bdff6a AM |
11746 | { |
11747 | bfd_boolean load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; | |
29433886 | 11748 | p = build_power10_offset (obfd, p, off, odd, load); |
04bdff6a AM |
11749 | } |
11750 | else | |
11751 | { | |
29433886 AM |
11752 | if (htab->glink_eh_frame != NULL |
11753 | && htab->glink_eh_frame->size != 0) | |
11754 | { | |
11755 | bfd_byte *base, *eh; | |
11756 | unsigned int lr_used, delta; | |
11757 | ||
11758 | base = (htab->glink_eh_frame->contents | |
11759 | + stub_entry->group->eh_base + 17); | |
11760 | eh = base + stub_entry->group->eh_size; | |
11761 | lr_used = stub_entry->stub_offset + (p - loc) + 8; | |
11762 | delta = lr_used - stub_entry->group->lr_restore; | |
11763 | stub_entry->group->lr_restore = lr_used + 8; | |
11764 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11765 | *eh++ = DW_CFA_register; | |
11766 | *eh++ = 65; | |
11767 | *eh++ = 12; | |
11768 | *eh++ = DW_CFA_advance_loc + 2; | |
11769 | *eh++ = DW_CFA_restore_extended; | |
11770 | *eh++ = 65; | |
11771 | stub_entry->group->eh_size = eh - base; | |
11772 | } | |
11773 | ||
04bdff6a AM |
11774 | /* The notoc stubs calculate their target (either a PLT entry or |
11775 | the global entry point of a function) relative to the PC | |
11776 | returned by the "bcl" two instructions past the start of the | |
11777 | sequence emitted by build_offset. The offset is therefore 8 | |
11778 | less than calculated from the start of the sequence. */ | |
11779 | off -= 8; | |
29433886 | 11780 | p = build_offset (obfd, p, off, |
04bdff6a AM |
11781 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); |
11782 | } | |
11783 | ||
f891966f | 11784 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11785 | { |
f891966f | 11786 | bfd_vma from; |
3d58e1fc | 11787 | num_rel = 1; |
f891966f AM |
11788 | from = (stub_entry->stub_offset |
11789 | + stub_entry->group->stub_sec->output_offset | |
11790 | + stub_entry->group->stub_sec->output_section->vma | |
11791 | + (p - loc)); | |
29433886 | 11792 | bfd_put_32 (obfd, B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11793 | } |
11794 | else | |
11795 | { | |
29433886 | 11796 | bfd_put_32 (obfd, MTCTR_R12, p); |
05d0e962 | 11797 | p += 4; |
29433886 | 11798 | bfd_put_32 (obfd, BCTR, p); |
05d0e962 AM |
11799 | } |
11800 | p += 4; | |
df136d64 | 11801 | |
29433886 AM |
11802 | if (is_tga) |
11803 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
11804 | ||
3d58e1fc AM |
11805 | if (info->emitrelocations) |
11806 | { | |
04bdff6a | 11807 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
e10a07b3 | 11808 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11809 | num_rel += num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
11810 | else |
11811 | { | |
11812 | num_rel += num_relocs_for_offset (off); | |
11813 | roff += 16; | |
11814 | } | |
3d58e1fc AM |
11815 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11816 | if (r == NULL) | |
11817 | return FALSE; | |
e10a07b3 | 11818 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11819 | r = emit_relocs_for_power10_offset (info, r, roff, targ, off, odd); |
04bdff6a AM |
11820 | else |
11821 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11822 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11823 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11824 | { | |
11825 | ++r; | |
11826 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11827 | r->r_offset = roff; | |
11828 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11829 | r->r_addend = targ; | |
11830 | if (stub_entry->h != NULL | |
11831 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11832 | return FALSE; | |
11833 | } | |
11834 | } | |
05d0e962 AM |
11835 | break; |
11836 | ||
721956f4 | 11837 | case ppc_stub_plt_call: |
794e51c0 | 11838 | case ppc_stub_plt_call_r2save: |
e054468f | 11839 | if (stub_entry->h != NULL |
b31867b6 AM |
11840 | && stub_entry->h->is_func_descriptor |
11841 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11842 | { |
b31867b6 AM |
11843 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11844 | ||
11845 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11846 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11847 | if (fh->elf.root.type == bfd_link_hash_undefined |
11848 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11849 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11850 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11851 | } |
11852 | ||
721956f4 | 11853 | /* Now build the stub. */ |
1aa42141 AM |
11854 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11855 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11856 | abort (); |
11857 | ||
33e44f2e | 11858 | plt = htab->elf.splt; |
30845f11 | 11859 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
2d7ad24e AM |
11860 | { |
11861 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11862 | plt = htab->elf.iplt; | |
11863 | else | |
11864 | plt = htab->pltlocal; | |
11865 | } | |
1aa42141 | 11866 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11867 | |
1aa42141 AM |
11868 | off = (elf_gp (info->output_bfd) |
11869 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11870 | off = targ - off; | |
721956f4 | 11871 | |
ad8e1ba5 | 11872 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11873 | { |
25f53a85 | 11874 | info->callbacks->einfo |
695344c0 | 11875 | /* xgettext:c-format */ |
c1c8c1ef | 11876 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11877 | stub_entry->h != NULL |
11878 | ? stub_entry->h->elf.root.root.string | |
11879 | : "<local sym>"); | |
721956f4 | 11880 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11881 | htab->stub_error = TRUE; |
11882 | return FALSE; | |
721956f4 AM |
11883 | } |
11884 | ||
176a0d42 AM |
11885 | r = NULL; |
11886 | if (info->emitrelocations) | |
11887 | { | |
6f20ed8a | 11888 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11889 | ((PPC_HA (off) != 0) |
11890 | + (htab->opd_abi | |
e7d1c40c | 11891 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11892 | && PPC_HA (off + 16) == PPC_HA (off)) |
11893 | : 1))); | |
176a0d42 AM |
11894 | if (r == NULL) |
11895 | return FALSE; | |
6f20ed8a | 11896 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11897 | if (bfd_big_endian (info->output_bfd)) |
11898 | r[0].r_offset += 2; | |
1aa42141 | 11899 | r[0].r_addend = targ; |
176a0d42 | 11900 | } |
29433886 AM |
11901 | p = loc; |
11902 | obfd = htab->params->stub_bfd; | |
11903 | is_tga = (stub_entry->h != NULL | |
11904 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
11905 | && htab->params->tls_get_addr_opt); | |
11906 | if (is_tga) | |
11907 | { | |
11908 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
11909 | if (r != NULL) | |
11910 | r[0].r_offset += p - loc; | |
11911 | } | |
11912 | p = build_plt_stub (htab, stub_entry, p, off, r); | |
11913 | if (is_tga) | |
11914 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
721956f4 AM |
11915 | break; |
11916 | ||
a4b6fadd AM |
11917 | case ppc_stub_save_res: |
11918 | return TRUE; | |
11919 | ||
721956f4 AM |
11920 | default: |
11921 | BFD_FAIL (); | |
b34976b6 | 11922 | return FALSE; |
721956f4 AM |
11923 | } |
11924 | ||
1aa42141 | 11925 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11926 | |
e7d1c40c | 11927 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11928 | { |
11929 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11930 | size_t len1, len2; |
11931 | char *name; | |
11932 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11933 | "long_branch", |
11934 | "long_branch", | |
3f6ff479 AM |
11935 | "long_branch", |
11936 | "plt_branch", | |
ee75fd95 | 11937 | "plt_branch", |
05d0e962 AM |
11938 | "plt_branch", |
11939 | "plt_branch", | |
11940 | "plt_call", | |
11941 | "plt_call", | |
794e51c0 | 11942 | "plt_call", |
ee75fd95 AM |
11943 | "plt_call" }; |
11944 | ||
11945 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11946 | len2 = strlen (stub_entry->root.string); | |
11947 | name = bfd_malloc (len1 + len2 + 2); | |
11948 | if (name == NULL) | |
11949 | return FALSE; | |
11950 | memcpy (name, stub_entry->root.string, 9); | |
11951 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11952 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11953 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11954 | if (h == NULL) |
11955 | return FALSE; | |
11956 | if (h->root.type == bfd_link_hash_new) | |
11957 | { | |
11958 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11959 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11960 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11961 | h->ref_regular = 1; |
11962 | h->def_regular = 1; | |
11963 | h->ref_regular_nonweak = 1; | |
11964 | h->forced_local = 1; | |
11965 | h->non_elf = 0; | |
2ec55de3 | 11966 | h->root.linker_def = 1; |
97b639ba AM |
11967 | } |
11968 | } | |
11969 | ||
b34976b6 | 11970 | return TRUE; |
721956f4 AM |
11971 | } |
11972 | ||
11973 | /* As above, but don't actually build the stub. Just bump offset so | |
11974 | we know stub section sizes, and select plt_branch stubs where | |
11975 | long_branch stubs won't do. */ | |
11976 | ||
b34976b6 | 11977 | static bfd_boolean |
4ce794b7 | 11978 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11979 | { |
11980 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11981 | struct bfd_link_info *info; |
721956f4 | 11982 | struct ppc_link_hash_table *htab; |
f891966f AM |
11983 | asection *plt; |
11984 | bfd_vma targ, off, r2off; | |
04bdff6a | 11985 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
11986 | |
11987 | /* Massage our args to the form they really have. */ | |
11988 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11989 | info = in_arg; |
11990 | ||
11991 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11992 | if (htab == NULL) |
11993 | return FALSE; | |
721956f4 | 11994 | |
abf874aa CL |
11995 | /* Fail if the target section could not be assigned to an output |
11996 | section. The user should fix his linker script. */ | |
11997 | if (stub_entry->target_section != NULL | |
11998 | && stub_entry->target_section->output_section == NULL | |
11999 | && info->non_contiguous_regions) | |
53215f21 CL |
12000 | info->callbacks->einfo (_("%F%P: Could not assign %pA to an output section. " |
12001 | "Retry without --enable-non-contiguous-regions.\n"), | |
12002 | stub_entry->target_section); | |
abf874aa CL |
12003 | |
12004 | /* Same for the group. */ | |
12005 | if (stub_entry->group->stub_sec != NULL | |
12006 | && stub_entry->group->stub_sec->output_section == NULL | |
12007 | && info->non_contiguous_regions) | |
53215f21 CL |
12008 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
12009 | "output section. Retry without " | |
12010 | "--enable-non-contiguous-regions.\n"), | |
12011 | stub_entry->group->stub_sec, | |
12012 | stub_entry->target_section); | |
abf874aa | 12013 | |
1aa42141 AM |
12014 | /* Make a note of the offset within the stubs for this entry. */ |
12015 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12016 | ||
a4b6fadd AM |
12017 | if (stub_entry->h != NULL |
12018 | && stub_entry->h->save_res | |
12019 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
12020 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
12021 | { | |
12022 | /* Don't make stubs to out-of-line register save/restore | |
12023 | functions. Instead, emit copies of the functions. */ | |
12024 | stub_entry->group->needs_save_res = 1; | |
12025 | stub_entry->stub_type = ppc_stub_save_res; | |
12026 | return TRUE; | |
12027 | } | |
12028 | ||
f891966f | 12029 | switch (stub_entry->stub_type) |
721956f4 | 12030 | { |
f891966f AM |
12031 | case ppc_stub_plt_branch: |
12032 | case ppc_stub_plt_branch_r2off: | |
12033 | /* Reset the stub type from the plt branch variant in case we now | |
12034 | can reach with a shorter stub. */ | |
12035 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12036 | /* Fall through. */ | |
12037 | case ppc_stub_long_branch: | |
12038 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
12039 | targ = (stub_entry->target_value |
12040 | + stub_entry->target_section->output_offset | |
12041 | + stub_entry->target_section->output_section->vma); | |
f891966f | 12042 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
12043 | off = (stub_entry->stub_offset |
12044 | + stub_entry->group->stub_sec->output_offset | |
12045 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 12046 | |
ad8e1ba5 | 12047 | size = 4; |
f891966f | 12048 | r2off = 0; |
ad8e1ba5 AM |
12049 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
12050 | { | |
25f53a85 | 12051 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 12052 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
12053 | { |
12054 | htab->stub_error = TRUE; | |
12055 | return FALSE; | |
12056 | } | |
a7c49797 | 12057 | size = 8; |
ac2df442 | 12058 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
12059 | size += 4; |
12060 | if (PPC_LO (r2off) != 0) | |
12061 | size += 4; | |
1aa42141 | 12062 | off += size - 4; |
ad8e1ba5 | 12063 | } |
1aa42141 | 12064 | off = targ - off; |
ad8e1ba5 | 12065 | |
f891966f AM |
12066 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
12067 | Do the same for -R objects without function descriptors. */ | |
12068 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
12069 | && r2off == 0 | |
12070 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
12071 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 12072 | { |
f891966f | 12073 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 12074 | |
f891966f AM |
12075 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
12076 | stub_entry->root.string + 9, | |
12077 | TRUE, FALSE); | |
12078 | if (br_entry == NULL) | |
721956f4 | 12079 | { |
f891966f AM |
12080 | _bfd_error_handler (_("can't build branch stub `%s'"), |
12081 | stub_entry->root.string); | |
12082 | htab->stub_error = TRUE; | |
12083 | return FALSE; | |
721956f4 AM |
12084 | } |
12085 | ||
f891966f | 12086 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 12087 | { |
f891966f AM |
12088 | br_entry->iter = htab->stub_iteration; |
12089 | br_entry->offset = htab->brlt->size; | |
12090 | htab->brlt->size += 8; | |
63bc6f6c | 12091 | |
f891966f AM |
12092 | if (htab->relbrlt != NULL) |
12093 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
12094 | else if (info->emitrelocations) | |
84f5d08e | 12095 | { |
f891966f AM |
12096 | htab->brlt->reloc_count += 1; |
12097 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 12098 | } |
f891966f | 12099 | } |
ac2df442 | 12100 | |
f891966f AM |
12101 | targ = (br_entry->offset |
12102 | + htab->brlt->output_offset | |
12103 | + htab->brlt->output_section->vma); | |
12104 | off = (elf_gp (info->output_bfd) | |
12105 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12106 | off = targ - off; | |
176a0d42 | 12107 | |
f891966f AM |
12108 | if (info->emitrelocations) |
12109 | { | |
12110 | stub_entry->group->stub_sec->reloc_count | |
12111 | += 1 + (PPC_HA (off) != 0); | |
12112 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12113 | } | |
05d0e962 | 12114 | |
f891966f AM |
12115 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
12116 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
12117 | { | |
12118 | size = 12; | |
12119 | if (PPC_HA (off) != 0) | |
12120 | size = 16; | |
ac2df442 | 12121 | } |
f891966f | 12122 | else |
ac2df442 | 12123 | { |
f891966f AM |
12124 | size = 16; |
12125 | if (PPC_HA (off) != 0) | |
12126 | size += 4; | |
12127 | ||
12128 | if (PPC_HA (r2off) != 0) | |
12129 | size += 4; | |
12130 | if (PPC_LO (r2off) != 0) | |
12131 | size += 4; | |
ac2df442 | 12132 | } |
721956f4 | 12133 | } |
f891966f AM |
12134 | else if (info->emitrelocations) |
12135 | { | |
12136 | stub_entry->group->stub_sec->reloc_count += 1; | |
12137 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12138 | } | |
12139 | break; | |
12140 | ||
12141 | case ppc_stub_plt_branch_notoc: | |
12142 | case ppc_stub_plt_branch_both: | |
12143 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12144 | /* Fall through. */ | |
12145 | case ppc_stub_long_branch_notoc: | |
12146 | case ppc_stub_long_branch_both: | |
12147 | off = (stub_entry->stub_offset | |
12148 | + stub_entry->group->stub_sec->output_offset | |
12149 | + stub_entry->group->stub_sec->output_section->vma); | |
12150 | size = 0; | |
12151 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12152 | size = 4; | |
12153 | off += size; | |
12154 | targ = (stub_entry->target_value | |
12155 | + stub_entry->target_section->output_offset | |
12156 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12157 | odd = off & 4; |
f891966f AM |
12158 | off = targ - off; |
12159 | ||
3d58e1fc AM |
12160 | if (info->emitrelocations) |
12161 | { | |
04bdff6a | 12162 | unsigned int num_rel; |
e10a07b3 | 12163 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12164 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12165 | else |
12166 | num_rel = num_relocs_for_offset (off - 8); | |
12167 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12168 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12169 | } | |
12170 | ||
e10a07b3 | 12171 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12172 | extra = size_power10_offset (off, odd); |
04bdff6a AM |
12173 | else |
12174 | extra = size_offset (off - 8); | |
f891966f AM |
12175 | /* Include branch insn plus those in the offset sequence. */ |
12176 | size += 4 + extra; | |
12177 | /* The branch insn is at the end, or "extra" bytes along. So | |
12178 | its offset will be "extra" bytes less that that already | |
12179 | calculated. */ | |
12180 | off -= extra; | |
12181 | ||
e10a07b3 | 12182 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12183 | { |
12184 | /* After the bcl, lr has been modified so we need to emit | |
12185 | .eh_frame info saying the return address is in r12. */ | |
12186 | lr_used = stub_entry->stub_offset + 8; | |
12187 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12188 | lr_used += 4; | |
12189 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12190 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12191 | DW_CFA_restore_extended 65. */ | |
12192 | delta = lr_used - stub_entry->group->lr_restore; | |
12193 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12194 | stub_entry->group->lr_restore = lr_used + 8; | |
12195 | } | |
f891966f AM |
12196 | |
12197 | /* If the branch can't reach, use a plt_branch. */ | |
12198 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
12199 | { | |
12200 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
12201 | - ppc_stub_long_branch_notoc); | |
12202 | size += 4; | |
12203 | } | |
3d58e1fc AM |
12204 | else if (info->emitrelocations) |
12205 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
12206 | break; |
12207 | ||
12208 | case ppc_stub_plt_call_notoc: | |
12209 | case ppc_stub_plt_call_both: | |
29433886 | 12210 | lr_used = 0; |
12cf8b93 AM |
12211 | if (stub_entry->h != NULL |
12212 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
29433886 AM |
12213 | && htab->params->tls_get_addr_opt) |
12214 | { | |
12215 | lr_used += 7 * 4; | |
12216 | if (!htab->params->no_tls_get_addr_regsave) | |
12217 | lr_used += 11 * 4; | |
12218 | else if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12219 | lr_used += 2 * 4; | |
12220 | } | |
f891966f | 12221 | if (stub_entry->stub_type == ppc_stub_plt_call_both) |
29433886 | 12222 | lr_used += 4; |
f891966f AM |
12223 | targ = stub_entry->plt_ent->plt.offset & ~1; |
12224 | if (targ >= (bfd_vma) -2) | |
12225 | abort (); | |
12226 | ||
12227 | plt = htab->elf.splt; | |
30845f11 | 12228 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
f891966f AM |
12229 | { |
12230 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12231 | plt = htab->elf.iplt; | |
12232 | else | |
12233 | plt = htab->pltlocal; | |
12234 | } | |
12235 | targ += plt->output_offset + plt->output_section->vma; | |
29433886 AM |
12236 | off = (stub_entry->stub_offset |
12237 | + stub_entry->group->stub_sec->output_offset | |
12238 | + stub_entry->group->stub_sec->output_section->vma | |
12239 | + lr_used); | |
04bdff6a | 12240 | odd = off & 4; |
f891966f AM |
12241 | off = targ - off; |
12242 | ||
12243 | if (htab->params->plt_stub_align != 0) | |
12244 | { | |
29433886 | 12245 | unsigned pad = plt_stub_pad (htab, stub_entry, off, odd); |
f891966f AM |
12246 | |
12247 | stub_entry->group->stub_sec->size += pad; | |
12248 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12249 | off -= pad; | |
29433886 | 12250 | odd ^= pad & 4; |
f891966f AM |
12251 | } |
12252 | ||
3d58e1fc AM |
12253 | if (info->emitrelocations) |
12254 | { | |
04bdff6a | 12255 | unsigned int num_rel; |
e10a07b3 | 12256 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12257 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12258 | else |
12259 | num_rel = num_relocs_for_offset (off - 8); | |
12260 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12261 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12262 | } | |
12263 | ||
29433886 | 12264 | size = plt_stub_size (htab, stub_entry, off, odd); |
f891966f | 12265 | |
e10a07b3 | 12266 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12267 | { |
12268 | /* After the bcl, lr has been modified so we need to emit | |
12269 | .eh_frame info saying the return address is in r12. */ | |
29433886 | 12270 | lr_used += stub_entry->stub_offset + 8; |
04bdff6a AM |
12271 | /* The eh_frame info will consist of a DW_CFA_advance_loc or |
12272 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12273 | DW_CFA_restore_extended 65. */ | |
12274 | delta = lr_used - stub_entry->group->lr_restore; | |
12275 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12276 | stub_entry->group->lr_restore = lr_used + 8; | |
12277 | } | |
29433886 AM |
12278 | if ((stub_entry->stub_type == ppc_stub_plt_call_notoc |
12279 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
12cf8b93 | 12280 | && stub_entry->h != NULL |
29433886 AM |
12281 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
12282 | && htab->params->tls_get_addr_opt) | |
12283 | { | |
12284 | if (!htab->params->no_tls_get_addr_regsave) | |
12285 | { | |
12286 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12287 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12288 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12289 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12290 | stub_entry->group->lr_restore | |
12291 | = stub_entry->stub_offset + size - 4; | |
12292 | } | |
12293 | else if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12294 | { | |
12295 | lr_used = stub_entry->stub_offset + size - 20; | |
12296 | delta = lr_used - stub_entry->group->lr_restore; | |
12297 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12298 | stub_entry->group->lr_restore | |
12299 | = stub_entry->stub_offset + size - 4; | |
12300 | } | |
12301 | } | |
f891966f AM |
12302 | break; |
12303 | ||
12304 | case ppc_stub_plt_call: | |
12305 | case ppc_stub_plt_call_r2save: | |
12306 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
12307 | if (targ >= (bfd_vma) -2) | |
12308 | abort (); | |
12309 | plt = htab->elf.splt; | |
30845f11 | 12310 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
f891966f AM |
12311 | { |
12312 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12313 | plt = htab->elf.iplt; | |
12314 | else | |
12315 | plt = htab->pltlocal; | |
12316 | } | |
12317 | targ += plt->output_offset + plt->output_section->vma; | |
12318 | ||
12319 | off = (elf_gp (info->output_bfd) | |
12320 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12321 | off = targ - off; | |
12322 | ||
12323 | if (htab->params->plt_stub_align != 0) | |
12324 | { | |
29433886 | 12325 | unsigned pad = plt_stub_pad (htab, stub_entry, off, 0); |
f891966f AM |
12326 | |
12327 | stub_entry->group->stub_sec->size += pad; | |
12328 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12329 | } | |
12330 | ||
12331 | if (info->emitrelocations) | |
12332 | { | |
12333 | stub_entry->group->stub_sec->reloc_count | |
12334 | += ((PPC_HA (off) != 0) | |
12335 | + (htab->opd_abi | |
12336 | ? 2 + (htab->params->plt_static_chain | |
12337 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12338 | : 1)); | |
12339 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12340 | } | |
12341 | ||
29433886 | 12342 | size = plt_stub_size (htab, stub_entry, off, 0); |
f891966f AM |
12343 | |
12344 | if (stub_entry->h != NULL | |
ed7007c1 | 12345 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
f891966f AM |
12346 | && htab->params->tls_get_addr_opt |
12347 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
12348 | { | |
29433886 AM |
12349 | if (!htab->params->no_tls_get_addr_regsave) |
12350 | { | |
12351 | /* Adjustments to r1 need to be described. */ | |
12352 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12353 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12354 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12355 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12356 | } | |
12357 | else | |
9e7028aa AM |
12358 | { |
12359 | lr_used = stub_entry->stub_offset + size - 20; | |
12360 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
12361 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12362 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12363 | delta = lr_used - stub_entry->group->lr_restore; | |
12364 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12365 | } | |
29433886 | 12366 | stub_entry->group->lr_restore = stub_entry->stub_offset + size - 4; |
f891966f AM |
12367 | } |
12368 | break; | |
12369 | ||
12370 | default: | |
12371 | BFD_FAIL (); | |
12372 | return FALSE; | |
721956f4 AM |
12373 | } |
12374 | ||
6f20ed8a | 12375 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 12376 | return TRUE; |
721956f4 AM |
12377 | } |
12378 | ||
12379 | /* Set up various things so that we can make a list of input sections | |
12380 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12381 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12382 | |
12383 | int | |
e7d1c40c | 12384 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12385 | { |
6f20ed8a | 12386 | unsigned int id; |
986f0783 | 12387 | size_t amt; |
721956f4 AM |
12388 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12389 | ||
4dfe6ac6 NC |
12390 | if (htab == NULL) |
12391 | return -1; | |
4c52953f | 12392 | |
7cf7fcc8 | 12393 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12394 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12395 | htab->sec_info = bfd_zmalloc (amt); | |
12396 | if (htab->sec_info == NULL) | |
721956f4 AM |
12397 | return -1; |
12398 | ||
3d6f9012 AM |
12399 | /* Set toc_off for com, und, abs and ind sections. */ |
12400 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12401 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12402 | |
721956f4 AM |
12403 | return 1; |
12404 | } | |
12405 | ||
927be08e AM |
12406 | /* Set up for first pass at multitoc partitioning. */ |
12407 | ||
12408 | void | |
12409 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12410 | { | |
12411 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12412 | ||
1c865ab2 | 12413 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12414 | htab->toc_bfd = NULL; |
12415 | htab->toc_first_sec = NULL; | |
12416 | } | |
12417 | ||
e717da7e AM |
12418 | /* The linker repeatedly calls this function for each TOC input section |
12419 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12420 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12421 | |
927be08e | 12422 | bfd_boolean |
4ce794b7 | 12423 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12424 | { |
12425 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12426 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12427 | |
4dfe6ac6 NC |
12428 | if (htab == NULL) |
12429 | return FALSE; | |
12430 | ||
927be08e | 12431 | if (!htab->second_toc_pass) |
4c52953f | 12432 | { |
927be08e | 12433 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
12434 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
12435 | ||
12436 | if (new_bfd) | |
bf102f86 AM |
12437 | { |
12438 | htab->toc_bfd = isec->owner; | |
12439 | htab->toc_first_sec = isec; | |
12440 | } | |
927be08e | 12441 | |
bf102f86 AM |
12442 | addr = isec->output_offset + isec->output_section->vma; |
12443 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12444 | limit = 0x80008000; |
12445 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12446 | limit = 0x10000; | |
12447 | if (off + isec->size > limit) | |
bf102f86 AM |
12448 | { |
12449 | addr = (htab->toc_first_sec->output_offset | |
12450 | + htab->toc_first_sec->output_section->vma); | |
12451 | htab->toc_curr = addr; | |
a27e685f | 12452 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12453 | } |
99877b66 | 12454 | |
927be08e AM |
12455 | /* toc_curr is the base address of this toc group. Set elf_gp |
12456 | for the input section to be the offset relative to the | |
12457 | output toc base plus 0x8000. Making the input elf_gp an | |
12458 | offset allows us to move the toc as a whole without | |
12459 | recalculating input elf_gp. */ | |
06bcf541 | 12460 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12461 | off += TOC_BASE_OFF; |
12462 | ||
12463 | /* Die if someone uses a linker script that doesn't keep input | |
12464 | file .toc and .got together. */ | |
a4fd3de5 AM |
12465 | if (new_bfd |
12466 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
12467 | && elf_gp (isec->owner) != off) |
12468 | return FALSE; | |
12469 | ||
12470 | elf_gp (isec->owner) = off; | |
12471 | return TRUE; | |
4c52953f | 12472 | } |
927be08e AM |
12473 | |
12474 | /* During the second pass toc_first_sec points to the start of | |
12475 | a toc group, and toc_curr is used to track the old elf_gp. | |
12476 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12477 | if (htab->toc_bfd == isec->owner) | |
12478 | return TRUE; | |
12479 | htab->toc_bfd = isec->owner; | |
12480 | ||
12481 | if (htab->toc_first_sec == NULL | |
12482 | || htab->toc_curr != elf_gp (isec->owner)) | |
12483 | { | |
12484 | htab->toc_curr = elf_gp (isec->owner); | |
12485 | htab->toc_first_sec = isec; | |
12486 | } | |
12487 | addr = (htab->toc_first_sec->output_offset | |
12488 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12489 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12490 | elf_gp (isec->owner) = off; |
12491 | ||
12492 | return TRUE; | |
ad8e1ba5 AM |
12493 | } |
12494 | ||
927be08e AM |
12495 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12496 | symbol H. */ | |
12497 | ||
12498 | static bfd_boolean | |
12499 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12500 | { | |
12501 | if (h->root.type == bfd_link_hash_indirect) | |
12502 | return TRUE; | |
12503 | ||
927be08e AM |
12504 | merge_got_entries (&h->got.glist); |
12505 | ||
12506 | return TRUE; | |
12507 | } | |
12508 | ||
12509 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12510 | symbol H. */ | |
12511 | ||
12512 | static bfd_boolean | |
12513 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
12514 | { | |
12515 | struct got_entry *gent; | |
12516 | ||
12517 | if (h->root.type == bfd_link_hash_indirect) | |
12518 | return TRUE; | |
12519 | ||
927be08e AM |
12520 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12521 | if (!gent->is_indirect) | |
12522 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
12523 | return TRUE; | |
12524 | } | |
12525 | ||
12526 | /* Called on the first multitoc pass after the last call to | |
12527 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12528 | entries. */ | |
12529 | ||
12530 | bfd_boolean | |
12531 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
12532 | { |
12533 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
12534 | struct bfd *ibfd, *ibfd2; |
12535 | bfd_boolean done_something; | |
12536 | ||
12537 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12538 | |
7865406b AM |
12539 | if (!htab->do_multi_toc) |
12540 | return FALSE; | |
12541 | ||
d0fae19d | 12542 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12543 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12544 | ||
12545 | /* And tlsld_got. */ | |
c72f2fb2 | 12546 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12547 | { |
12548 | struct got_entry *ent, *ent2; | |
12549 | ||
12550 | if (!is_ppc64_elf (ibfd)) | |
12551 | continue; | |
12552 | ||
12553 | ent = ppc64_tlsld_got (ibfd); | |
12554 | if (!ent->is_indirect | |
12555 | && ent->got.offset != (bfd_vma) -1) | |
12556 | { | |
c72f2fb2 | 12557 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12558 | { |
12559 | if (!is_ppc64_elf (ibfd2)) | |
12560 | continue; | |
12561 | ||
12562 | ent2 = ppc64_tlsld_got (ibfd2); | |
12563 | if (!ent2->is_indirect | |
12564 | && ent2->got.offset != (bfd_vma) -1 | |
12565 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12566 | { | |
12567 | ent2->is_indirect = TRUE; | |
12568 | ent2->got.ent = ent; | |
12569 | } | |
12570 | } | |
12571 | } | |
12572 | } | |
12573 | ||
12574 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12575 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12576 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12577 | htab->got_reli_size = 0; |
12578 | ||
c72f2fb2 | 12579 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12580 | { |
12581 | asection *got, *relgot; | |
12582 | ||
12583 | if (!is_ppc64_elf (ibfd)) | |
12584 | continue; | |
12585 | ||
12586 | got = ppc64_elf_tdata (ibfd)->got; | |
12587 | if (got != NULL) | |
12588 | { | |
12589 | got->rawsize = got->size; | |
12590 | got->size = 0; | |
12591 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12592 | relgot->rawsize = relgot->size; | |
12593 | relgot->size = 0; | |
12594 | } | |
12595 | } | |
12596 | ||
12597 | /* Now reallocate the got, local syms first. We don't need to | |
12598 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12599 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12600 | { |
12601 | struct got_entry **lgot_ents; | |
12602 | struct got_entry **end_lgot_ents; | |
12603 | struct plt_entry **local_plt; | |
12604 | struct plt_entry **end_local_plt; | |
f961d9dd | 12605 | unsigned char *lgot_masks; |
927be08e AM |
12606 | bfd_size_type locsymcount; |
12607 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12608 | asection *s; |
927be08e AM |
12609 | |
12610 | if (!is_ppc64_elf (ibfd)) | |
12611 | continue; | |
12612 | ||
12613 | lgot_ents = elf_local_got_ents (ibfd); | |
12614 | if (!lgot_ents) | |
12615 | continue; | |
12616 | ||
12617 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12618 | locsymcount = symtab_hdr->sh_info; | |
12619 | end_lgot_ents = lgot_ents + locsymcount; | |
12620 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12621 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12622 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12623 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12624 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12625 | { | |
12626 | struct got_entry *ent; | |
12627 | ||
12628 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12629 | { |
19e08130 AM |
12630 | unsigned int ent_size = 8; |
12631 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12632 | ||
d0fae19d AM |
12633 | ent->got.offset = s->size; |
12634 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12635 | { |
19e08130 AM |
12636 | ent_size *= 2; |
12637 | rel_size *= 2; | |
12638 | } | |
12639 | s->size += ent_size; | |
37da22e5 | 12640 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12641 | { |
33e44f2e | 12642 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12643 | htab->got_reli_size += rel_size; |
12644 | } | |
6a3858a6 | 12645 | else if (bfd_link_pic (info) |
f749f26e | 12646 | && !(ent->tls_type != 0 |
6a3858a6 | 12647 | && bfd_link_executable (info))) |
19e08130 AM |
12648 | { |
12649 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12650 | srel->size += rel_size; | |
d0fae19d AM |
12651 | } |
12652 | } | |
927be08e AM |
12653 | } |
12654 | } | |
12655 | ||
12656 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12657 | ||
c72f2fb2 | 12658 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12659 | { |
12660 | struct got_entry *ent; | |
12661 | ||
12662 | if (!is_ppc64_elf (ibfd)) | |
12663 | continue; | |
12664 | ||
12665 | ent = ppc64_tlsld_got (ibfd); | |
12666 | if (!ent->is_indirect | |
12667 | && ent->got.offset != (bfd_vma) -1) | |
12668 | { | |
12669 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12670 | ent->got.offset = s->size; | |
12671 | s->size += 16; | |
f749f26e | 12672 | if (bfd_link_dll (info)) |
927be08e AM |
12673 | { |
12674 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12675 | srel->size += sizeof (Elf64_External_Rela); | |
12676 | } | |
12677 | } | |
12678 | } | |
12679 | ||
33e44f2e | 12680 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12681 | if (!done_something) |
c72f2fb2 | 12682 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12683 | { |
12684 | asection *got; | |
12685 | ||
12686 | if (!is_ppc64_elf (ibfd)) | |
12687 | continue; | |
12688 | ||
12689 | got = ppc64_elf_tdata (ibfd)->got; | |
12690 | if (got != NULL) | |
12691 | { | |
12692 | done_something = got->rawsize != got->size; | |
12693 | if (done_something) | |
12694 | break; | |
12695 | } | |
12696 | } | |
12697 | ||
12698 | if (done_something) | |
e7d1c40c | 12699 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12700 | |
12701 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12702 | on input sections. */ | |
12703 | htab->toc_bfd = NULL; | |
12704 | htab->toc_first_sec = NULL; | |
12705 | htab->second_toc_pass = TRUE; | |
12706 | return done_something; | |
12707 | } | |
12708 | ||
12709 | /* Called after second pass of multitoc partitioning. */ | |
12710 | ||
12711 | void | |
12712 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12713 | { | |
12714 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12715 | ||
12716 | /* After the second pass, toc_curr tracks the TOC offset used | |
12717 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12718 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12719 | } |
12720 | ||
9b5ecbd0 AM |
12721 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12722 | calls, then there's no need to use toc adjusting stubs when branching | |
12723 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12724 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12725 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12726 | for a stub was detected. If called from the top level, a return of | |
12727 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12728 | |
12729 | static int | |
4ce794b7 | 12730 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12731 | { |
9b5ecbd0 | 12732 | int ret; |
70cc837d AM |
12733 | |
12734 | /* Mark this section as checked. */ | |
12735 | isec->call_check_done = 1; | |
9b5ecbd0 | 12736 | |
772119ce AM |
12737 | /* We know none of our code bearing sections will need toc stubs. */ |
12738 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12739 | return 0; | |
12740 | ||
eea6121a | 12741 | if (isec->size == 0) |
082c50f8 AM |
12742 | return 0; |
12743 | ||
4c52953f AM |
12744 | if (isec->output_section == NULL) |
12745 | return 0; | |
12746 | ||
4c52953f | 12747 | ret = 0; |
70cc837d | 12748 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12749 | { |
70cc837d AM |
12750 | Elf_Internal_Rela *relstart, *rel; |
12751 | Elf_Internal_Sym *local_syms; | |
12752 | struct ppc_link_hash_table *htab; | |
2917689a | 12753 | |
70cc837d AM |
12754 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12755 | info->keep_memory); | |
12756 | if (relstart == NULL) | |
12757 | return -1; | |
90aecf7a | 12758 | |
70cc837d AM |
12759 | /* Look for branches to outside of this section. */ |
12760 | local_syms = NULL; | |
12761 | htab = ppc_hash_table (info); | |
12762 | if (htab == NULL) | |
12763 | return -1; | |
4c52953f | 12764 | |
70cc837d | 12765 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12766 | { |
70cc837d AM |
12767 | enum elf_ppc64_reloc_type r_type; |
12768 | unsigned long r_symndx; | |
12769 | struct elf_link_hash_entry *h; | |
12770 | struct ppc_link_hash_entry *eh; | |
12771 | Elf_Internal_Sym *sym; | |
12772 | asection *sym_sec; | |
12773 | struct _opd_sec_data *opd; | |
12774 | bfd_vma sym_value; | |
12775 | bfd_vma dest; | |
12776 | ||
12777 | r_type = ELF64_R_TYPE (rel->r_info); | |
12778 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12779 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12780 | && r_type != R_PPC64_REL14 |
12781 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12782 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12783 | && r_type != R_PPC64_PLTCALL |
12784 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12785 | continue; |
4c52953f | 12786 | |
70cc837d AM |
12787 | r_symndx = ELF64_R_SYM (rel->r_info); |
12788 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12789 | isec->owner)) | |
4c52953f | 12790 | { |
70cc837d AM |
12791 | ret = -1; |
12792 | break; | |
12793 | } | |
4c52953f | 12794 | |
70cc837d AM |
12795 | /* Calls to dynamic lib functions go through a plt call stub |
12796 | that uses r2. */ | |
ed7007c1 | 12797 | eh = ppc_elf_hash_entry (h); |
70cc837d AM |
12798 | if (eh != NULL |
12799 | && (eh->elf.plt.plist != NULL | |
12800 | || (eh->oh != NULL | |
12801 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12802 | { | |
12803 | ret = 1; | |
12804 | break; | |
4c52953f AM |
12805 | } |
12806 | ||
70cc837d AM |
12807 | if (sym_sec == NULL) |
12808 | /* Ignore other undefined symbols. */ | |
4c52953f | 12809 | continue; |
4c52953f | 12810 | |
70cc837d AM |
12811 | /* Assume branches to other sections not included in the |
12812 | link need stubs too, to cover -R and absolute syms. */ | |
12813 | if (sym_sec->output_section == NULL) | |
12814 | { | |
12815 | ret = 1; | |
12816 | break; | |
12817 | } | |
4c52953f | 12818 | |
70cc837d AM |
12819 | if (h == NULL) |
12820 | sym_value = sym->st_value; | |
12821 | else | |
12822 | { | |
12823 | if (h->root.type != bfd_link_hash_defined | |
12824 | && h->root.type != bfd_link_hash_defweak) | |
12825 | abort (); | |
12826 | sym_value = h->root.u.def.value; | |
12827 | } | |
12828 | sym_value += rel->r_addend; | |
4c52953f | 12829 | |
70cc837d AM |
12830 | /* If this branch reloc uses an opd sym, find the code section. */ |
12831 | opd = get_opd_info (sym_sec); | |
12832 | if (opd != NULL) | |
12833 | { | |
12834 | if (h == NULL && opd->adjust != NULL) | |
12835 | { | |
12836 | long adjust; | |
4c52953f | 12837 | |
92a9c616 | 12838 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12839 | if (adjust == -1) |
12840 | /* Assume deleted functions won't ever be called. */ | |
12841 | continue; | |
12842 | sym_value += adjust; | |
12843 | } | |
4c52953f | 12844 | |
aef36ac1 AM |
12845 | dest = opd_entry_value (sym_sec, sym_value, |
12846 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12847 | if (dest == (bfd_vma) -1) |
12848 | continue; | |
12849 | } | |
12850 | else | |
12851 | dest = (sym_value | |
12852 | + sym_sec->output_offset | |
12853 | + sym_sec->output_section->vma); | |
4c52953f | 12854 | |
70cc837d AM |
12855 | /* Ignore branch to self. */ |
12856 | if (sym_sec == isec) | |
12857 | continue; | |
4c52953f | 12858 | |
70cc837d AM |
12859 | /* If the called function uses the toc, we need a stub. */ |
12860 | if (sym_sec->has_toc_reloc | |
12861 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12862 | { |
70cc837d | 12863 | ret = 1; |
4c52953f AM |
12864 | break; |
12865 | } | |
70cc837d AM |
12866 | |
12867 | /* Assume any branch that needs a long branch stub might in fact | |
12868 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12869 | else if (dest - (isec->output_offset | |
12870 | + isec->output_section->vma | |
6911b7dc AM |
12871 | + rel->r_offset) + (1 << 25) |
12872 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12873 | ? h->other | |
12874 | : sym->st_other)) | |
4c52953f | 12875 | { |
70cc837d AM |
12876 | ret = 1; |
12877 | break; | |
12878 | } | |
12879 | ||
12880 | /* If calling back to a section in the process of being | |
12881 | tested, we can't say for sure that no toc adjusting stubs | |
12882 | are needed, so don't return zero. */ | |
12883 | else if (sym_sec->call_check_in_progress) | |
12884 | ret = 2; | |
12885 | ||
12886 | /* Branches to another section that itself doesn't have any TOC | |
12887 | references are OK. Recursively call ourselves to check. */ | |
12888 | else if (!sym_sec->call_check_done) | |
12889 | { | |
12890 | int recur; | |
12891 | ||
12892 | /* Mark current section as indeterminate, so that other | |
12893 | sections that call back to current won't be marked as | |
12894 | known. */ | |
12895 | isec->call_check_in_progress = 1; | |
12896 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12897 | isec->call_check_in_progress = 0; | |
12898 | ||
4c52953f AM |
12899 | if (recur != 0) |
12900 | { | |
70cc837d AM |
12901 | ret = recur; |
12902 | if (recur != 2) | |
12903 | break; | |
4c52953f AM |
12904 | } |
12905 | } | |
4c52953f | 12906 | } |
70cc837d | 12907 | |
c9594989 AM |
12908 | if (elf_symtab_hdr (isec->owner).contents |
12909 | != (unsigned char *) local_syms) | |
70cc837d AM |
12910 | free (local_syms); |
12911 | if (elf_section_data (isec)->relocs != relstart) | |
12912 | free (relstart); | |
9b5ecbd0 AM |
12913 | } |
12914 | ||
70cc837d AM |
12915 | if ((ret & 1) == 0 |
12916 | && isec->map_head.s != NULL | |
12917 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12918 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12919 | { | |
12920 | if (isec->map_head.s->has_toc_reloc | |
12921 | || isec->map_head.s->makes_toc_func_call) | |
12922 | ret = 1; | |
12923 | else if (!isec->map_head.s->call_check_done) | |
12924 | { | |
12925 | int recur; | |
12926 | isec->call_check_in_progress = 1; | |
12927 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12928 | isec->call_check_in_progress = 0; | |
12929 | if (recur != 0) | |
12930 | ret = recur; | |
12931 | } | |
12932 | } | |
12933 | ||
12934 | if (ret == 1) | |
12935 | isec->makes_toc_func_call = 1; | |
4c52953f | 12936 | |
9b5ecbd0 AM |
12937 | return ret; |
12938 | } | |
12939 | ||
721956f4 AM |
12940 | /* The linker repeatedly calls this function for each input section, |
12941 | in the order that input sections are linked into output sections. | |
12942 | Build lists of input sections to determine groupings between which | |
12943 | we may insert linker stubs. */ | |
12944 | ||
9b5ecbd0 | 12945 | bfd_boolean |
4ce794b7 | 12946 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12947 | { |
12948 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12949 | ||
4dfe6ac6 NC |
12950 | if (htab == NULL) |
12951 | return FALSE; | |
12952 | ||
734b6cf9 | 12953 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12954 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12955 | { |
3d6f9012 AM |
12956 | /* This happens to make the list in reverse order, |
12957 | which is what we want. */ | |
6f20ed8a AM |
12958 | htab->sec_info[isec->id].u.list |
12959 | = htab->sec_info[isec->output_section->id].u.list; | |
12960 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12961 | } |
ad8e1ba5 | 12962 | |
4c52953f | 12963 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12964 | { |
8b974ba3 AM |
12965 | /* Analyse sections that aren't already flagged as needing a |
12966 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12967 | .fixup contains branches, but only back to the function that | |
12968 | hit an exception. */ | |
12969 | if (!(isec->has_toc_reloc | |
12970 | || (isec->flags & SEC_CODE) == 0 | |
12971 | || strcmp (isec->name, ".fixup") == 0 | |
12972 | || isec->call_check_done)) | |
12973 | { | |
12974 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12975 | return FALSE; |
8b974ba3 AM |
12976 | } |
12977 | /* Make all sections use the TOC assigned for this object file. | |
12978 | This will be wrong for pasted sections; We fix that in | |
12979 | check_pasted_section(). */ | |
12980 | if (elf_gp (isec->owner) != 0) | |
12981 | htab->toc_curr = elf_gp (isec->owner); | |
12982 | } | |
12983 | ||
6f20ed8a | 12984 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12985 | return TRUE; |
721956f4 AM |
12986 | } |
12987 | ||
70cc837d AM |
12988 | /* Check that all .init and .fini sections use the same toc, if they |
12989 | have toc relocs. */ | |
12990 | ||
12991 | static bfd_boolean | |
12992 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12993 | { | |
12994 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12995 | ||
12996 | if (o != NULL) | |
12997 | { | |
12998 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12999 | bfd_vma toc_off = 0; | |
13000 | asection *i; | |
13001 | ||
13002 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
13003 | if (i->has_toc_reloc) | |
13004 | { | |
13005 | if (toc_off == 0) | |
6f20ed8a AM |
13006 | toc_off = htab->sec_info[i->id].toc_off; |
13007 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
13008 | return FALSE; |
13009 | } | |
6683a28d AM |
13010 | |
13011 | if (toc_off == 0) | |
13012 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
13013 | if (i->makes_toc_func_call) | |
13014 | { | |
6f20ed8a | 13015 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
13016 | break; |
13017 | } | |
13018 | ||
70cc837d AM |
13019 | /* Make sure the whole pasted function uses the same toc offset. */ |
13020 | if (toc_off != 0) | |
13021 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 13022 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
13023 | } |
13024 | return TRUE; | |
13025 | } | |
13026 | ||
13027 | bfd_boolean | |
13028 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
13029 | { | |
13030 | return (check_pasted_section (info, ".init") | |
13031 | & check_pasted_section (info, ".fini")); | |
13032 | } | |
13033 | ||
721956f4 AM |
13034 | /* See whether we can group stub sections together. Grouping stub |
13035 | sections may result in fewer stubs. More importantly, we need to | |
13036 | put all .init* and .fini* stubs at the beginning of the .init or | |
13037 | .fini output sections respectively, because glibc splits the | |
13038 | _init and _fini functions into multiple parts. Putting a stub in | |
13039 | the middle of a function is not a good idea. */ | |
13040 | ||
6f20ed8a AM |
13041 | static bfd_boolean |
13042 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
13043 | bfd_size_type stub_group_size, |
13044 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 13045 | { |
6f20ed8a AM |
13046 | struct ppc_link_hash_table *htab; |
13047 | asection *osec; | |
7c8fe5c4 AM |
13048 | bfd_boolean suppress_size_errors; |
13049 | ||
6f20ed8a AM |
13050 | htab = ppc_hash_table (info); |
13051 | if (htab == NULL) | |
13052 | return FALSE; | |
13053 | ||
7c8fe5c4 | 13054 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
13055 | if (stub_group_size == 1) |
13056 | { | |
13057 | /* Default values. */ | |
13058 | if (stubs_always_before_branch) | |
09f92717 | 13059 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 13060 | else |
09f92717 | 13061 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
13062 | suppress_size_errors = TRUE; |
13063 | } | |
13064 | ||
6f20ed8a | 13065 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 13066 | { |
6f20ed8a AM |
13067 | asection *tail; |
13068 | ||
13069 | if (osec->id >= htab->sec_info_arr_size) | |
13070 | continue; | |
13071 | ||
13072 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 13073 | while (tail != NULL) |
721956f4 | 13074 | { |
734b6cf9 AM |
13075 | asection *curr; |
13076 | asection *prev; | |
13077 | bfd_size_type total; | |
13078 | bfd_boolean big_sec; | |
13079 | bfd_vma curr_toc; | |
6f20ed8a | 13080 | struct map_stub *group; |
09f92717 | 13081 | bfd_size_type group_size; |
734b6cf9 AM |
13082 | |
13083 | curr = tail; | |
eea6121a | 13084 | total = tail->size; |
09f92717 AM |
13085 | group_size = (ppc64_elf_section_data (tail) != NULL |
13086 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
13087 | ? stub_group_size >> 10 : stub_group_size); | |
13088 | ||
13089 | big_sec = total > group_size; | |
7c8fe5c4 | 13090 | if (big_sec && !suppress_size_errors) |
695344c0 | 13091 | /* xgettext:c-format */ |
871b3ab2 | 13092 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 13093 | tail->owner, tail); |
6f20ed8a | 13094 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 13095 | |
6f20ed8a | 13096 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 13097 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
13098 | < (ppc64_elf_section_data (prev) != NULL |
13099 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 13100 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 13101 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13102 | curr = prev; |
13103 | ||
13104 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 13105 | than group_size and thus can be handled by one stub |
734b6cf9 | 13106 | section. (or the tail section is itself larger than |
09f92717 AM |
13107 | group_size, in which case we may be toast.) We should |
13108 | really be keeping track of the total size of stubs added | |
13109 | here, as stubs contribute to the final output section | |
13110 | size. That's a little tricky, and this way will only | |
13111 | break if stubs added make the total size more than 2^25, | |
13112 | ie. for the default stub_group_size, if stubs total more | |
13113 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
13114 | group = bfd_alloc (curr->owner, sizeof (*group)); |
13115 | if (group == NULL) | |
13116 | return FALSE; | |
13117 | group->link_sec = curr; | |
13118 | group->stub_sec = NULL; | |
a4b6fadd | 13119 | group->needs_save_res = 0; |
df136d64 AM |
13120 | group->lr_restore = 0; |
13121 | group->eh_size = 0; | |
13122 | group->eh_base = 0; | |
a4b6fadd AM |
13123 | group->next = htab->group; |
13124 | htab->group = group; | |
734b6cf9 | 13125 | do |
721956f4 | 13126 | { |
6f20ed8a | 13127 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 13128 | /* Set up this stub group. */ |
6f20ed8a | 13129 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 13130 | } |
734b6cf9 AM |
13131 | while (tail != curr && (tail = prev) != NULL); |
13132 | ||
09f92717 | 13133 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
13134 | bytes before the stub section can be handled by it too. |
13135 | Don't do this if we have a really large section after the | |
13136 | stubs, as adding more stubs increases the chance that | |
13137 | branches may not reach into the stub section. */ | |
13138 | if (!stubs_always_before_branch && !big_sec) | |
13139 | { | |
13140 | total = 0; | |
13141 | while (prev != NULL | |
13142 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
13143 | < (ppc64_elf_section_data (prev) != NULL |
13144 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
13145 | ? (group_size = stub_group_size >> 10) |
13146 | : group_size)) | |
6f20ed8a | 13147 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13148 | { |
13149 | tail = prev; | |
6f20ed8a AM |
13150 | prev = htab->sec_info[tail->id].u.list; |
13151 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
13152 | } |
13153 | } | |
13154 | tail = prev; | |
721956f4 AM |
13155 | } |
13156 | } | |
6f20ed8a | 13157 | return TRUE; |
721956f4 AM |
13158 | } |
13159 | ||
58d180e8 AM |
13160 | static const unsigned char glink_eh_frame_cie[] = |
13161 | { | |
13162 | 0, 0, 0, 16, /* length. */ | |
13163 | 0, 0, 0, 0, /* id. */ | |
13164 | 1, /* CIE version. */ | |
13165 | 'z', 'R', 0, /* Augmentation string. */ | |
13166 | 4, /* Code alignment. */ | |
13167 | 0x78, /* Data alignment. */ | |
13168 | 65, /* RA reg. */ | |
13169 | 1, /* Augmentation size. */ | |
13170 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13171 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13172 | }; |
13173 | ||
d969d15f AM |
13174 | /* Stripping output sections is normally done before dynamic section |
13175 | symbols have been allocated. This function is called later, and | |
13176 | handles cases like htab->brlt which is mapped to its own output | |
13177 | section. */ | |
13178 | ||
13179 | static void | |
13180 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13181 | { | |
13182 | if (isec->size == 0 | |
13183 | && isec->output_section->size == 0 | |
53d8967a | 13184 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13185 | && !bfd_section_removed_from_list (info->output_bfd, |
13186 | isec->output_section) | |
13187 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13188 | { | |
13189 | isec->output_section->flags |= SEC_EXCLUDE; | |
13190 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13191 | info->output_bfd->section_count--; | |
13192 | } | |
13193 | } | |
13194 | ||
721956f4 AM |
13195 | /* Determine and set the size of the stub section for a final link. |
13196 | ||
13197 | The basic idea here is to examine all the relocations looking for | |
13198 | PC-relative calls to a target that is unreachable with a "bl" | |
13199 | instruction. */ | |
13200 | ||
b34976b6 | 13201 | bfd_boolean |
e7d1c40c | 13202 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13203 | { |
13204 | bfd_size_type stub_group_size; | |
b34976b6 | 13205 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
13206 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13207 | ||
4dfe6ac6 NC |
13208 | if (htab == NULL) |
13209 | return FALSE; | |
13210 | ||
e10a07b3 AM |
13211 | if (htab->params->power10_stubs == -1 && !htab->has_power10_relocs) |
13212 | htab->params->power10_stubs = 0; | |
13213 | ||
0e1862bb | 13214 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13215 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13216 | if (!htab->opd_abi) |
e7d1c40c AM |
13217 | htab->params->plt_thread_safe = 0; |
13218 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13219 | { |
e2458743 | 13220 | static const char *const thread_starter[] = |
794e51c0 AM |
13221 | { |
13222 | "pthread_create", | |
13223 | /* libstdc++ */ | |
13224 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13225 | /* librt */ | |
13226 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13227 | "mq_notify", "create_timer", | |
13228 | /* libanl */ | |
13229 | "getaddrinfo_a", | |
13230 | /* libgomp */ | |
2300b5a1 | 13231 | "GOMP_parallel", |
794e51c0 | 13232 | "GOMP_parallel_start", |
2300b5a1 | 13233 | "GOMP_parallel_loop_static", |
794e51c0 | 13234 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13235 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13236 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13237 | "GOMP_parallel_loop_guided", |
794e51c0 | 13238 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13239 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13240 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13241 | "GOMP_parallel_sections", |
68ffbac6 | 13242 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13243 | /* libgo */ |
13244 | "__go_go", | |
794e51c0 AM |
13245 | }; |
13246 | unsigned i; | |
13247 | ||
a4b6fadd | 13248 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13249 | { |
13250 | struct elf_link_hash_entry *h; | |
13251 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
13252 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
13253 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13254 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13255 | break; |
13256 | } | |
13257 | } | |
e7d1c40c AM |
13258 | stubs_always_before_branch = htab->params->group_size < 0; |
13259 | if (htab->params->group_size < 0) | |
13260 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13261 | else |
e7d1c40c | 13262 | stub_group_size = htab->params->group_size; |
721956f4 | 13263 | |
6f20ed8a AM |
13264 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
13265 | return FALSE; | |
721956f4 | 13266 | |
a804e476 AM |
13267 | htab->tga_group = NULL; |
13268 | if (!htab->params->no_tls_get_addr_regsave | |
13269 | && htab->tga_desc_fd != NULL | |
13270 | && (htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefined | |
13271 | || htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefweak) | |
13272 | && htab->tls_get_addr_fd != NULL | |
13273 | && is_static_defined (&htab->tls_get_addr_fd->elf)) | |
13274 | { | |
13275 | asection *sym_sec, *code_sec, *stub_sec; | |
13276 | bfd_vma sym_value; | |
13277 | struct _opd_sec_data *opd; | |
13278 | ||
13279 | sym_sec = htab->tls_get_addr_fd->elf.root.u.def.section; | |
13280 | sym_value = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
13281 | code_sec = sym_sec; | |
13282 | opd = get_opd_info (sym_sec); | |
13283 | if (opd != NULL) | |
13284 | opd_entry_value (sym_sec, sym_value, &code_sec, NULL, FALSE); | |
13285 | htab->tga_group = htab->sec_info[code_sec->id].u.group; | |
13286 | stub_sec = (*htab->params->add_stub_section) (".tga_desc.stub", | |
13287 | htab->tga_group->link_sec); | |
13288 | if (stub_sec == NULL) | |
13289 | return FALSE; | |
13290 | htab->tga_group->stub_sec = stub_sec; | |
13291 | ||
13292 | htab->tga_desc_fd->elf.root.type = bfd_link_hash_defined; | |
13293 | htab->tga_desc_fd->elf.root.u.def.section = stub_sec; | |
13294 | htab->tga_desc_fd->elf.root.u.def.value = 0; | |
13295 | htab->tga_desc_fd->elf.type = STT_FUNC; | |
13296 | htab->tga_desc_fd->elf.def_regular = 1; | |
13297 | htab->tga_desc_fd->elf.non_elf = 0; | |
13298 | _bfd_elf_link_hash_hide_symbol (info, &htab->tga_desc_fd->elf, TRUE); | |
13299 | } | |
13300 | ||
c9301e31 AM |
13301 | #define STUB_SHRINK_ITER 20 |
13302 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
13303 | exit on a stub section shrinking. This is to break out of a | |
13304 | pathological case where adding stubs on one iteration decreases | |
13305 | section gaps (perhaps due to alignment), which then requires | |
13306 | fewer or smaller stubs on the next iteration. */ | |
13307 | ||
721956f4 AM |
13308 | while (1) |
13309 | { | |
13310 | bfd *input_bfd; | |
13311 | unsigned int bfd_indx; | |
a4b6fadd | 13312 | struct map_stub *group; |
721956f4 AM |
13313 | |
13314 | htab->stub_iteration += 1; | |
721956f4 AM |
13315 | |
13316 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13317 | input_bfd != NULL; | |
c72f2fb2 | 13318 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13319 | { |
13320 | Elf_Internal_Shdr *symtab_hdr; | |
13321 | asection *section; | |
6cdc0ccc | 13322 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13323 | |
0c8d6e5c | 13324 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13325 | continue; |
13326 | ||
721956f4 | 13327 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13328 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13329 | if (symtab_hdr->sh_info == 0) |
13330 | continue; | |
13331 | ||
721956f4 AM |
13332 | /* Walk over each section attached to the input bfd. */ |
13333 | for (section = input_bfd->sections; | |
13334 | section != NULL; | |
13335 | section = section->next) | |
13336 | { | |
721956f4 | 13337 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
13338 | |
13339 | /* If there aren't any relocs, then there's nothing more | |
13340 | to do. */ | |
13341 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13342 | || (section->flags & SEC_ALLOC) == 0 |
13343 | || (section->flags & SEC_LOAD) == 0 | |
13344 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
13345 | || section->reloc_count == 0) |
13346 | continue; | |
13347 | ||
13348 | /* If this section is a link-once section that will be | |
13349 | discarded, then don't create any stubs. */ | |
13350 | if (section->output_section == NULL | |
927be08e | 13351 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13352 | continue; |
13353 | ||
1e2f5b6e AM |
13354 | /* Get the relocs. */ |
13355 | internal_relocs | |
4ce794b7 | 13356 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13357 | info->keep_memory); |
721956f4 | 13358 | if (internal_relocs == NULL) |
1e2f5b6e | 13359 | goto error_ret_free_local; |
721956f4 AM |
13360 | |
13361 | /* Now examine each relocation. */ | |
13362 | irela = internal_relocs; | |
13363 | irelaend = irela + section->reloc_count; | |
13364 | for (; irela < irelaend; irela++) | |
13365 | { | |
4ce794b7 AM |
13366 | enum elf_ppc64_reloc_type r_type; |
13367 | unsigned int r_indx; | |
721956f4 AM |
13368 | enum ppc_stub_type stub_type; |
13369 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 13370 | asection *sym_sec, *code_sec; |
e054468f | 13371 | bfd_vma sym_value, code_value; |
721956f4 | 13372 | bfd_vma destination; |
6911b7dc | 13373 | unsigned long local_off; |
8843416a | 13374 | bfd_boolean ok_dest; |
721956f4 | 13375 | struct ppc_link_hash_entry *hash; |
8387904d | 13376 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13377 | struct elf_link_hash_entry *h; |
13378 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13379 | char *stub_name; |
13380 | const asection *id_sec; | |
74f0fb50 | 13381 | struct _opd_sec_data *opd; |
e054468f | 13382 | struct plt_entry *plt_ent; |
721956f4 AM |
13383 | |
13384 | r_type = ELF64_R_TYPE (irela->r_info); | |
13385 | r_indx = ELF64_R_SYM (irela->r_info); | |
13386 | ||
4ce794b7 | 13387 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13388 | { |
13389 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13390 | goto error_ret_free_internal; |
721956f4 AM |
13391 | } |
13392 | ||
13393 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 13394 | if (r_type != R_PPC64_REL24 |
05d0e962 | 13395 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
13396 | && r_type != R_PPC64_REL14 |
13397 | && r_type != R_PPC64_REL14_BRTAKEN | |
13398 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
13399 | continue; |
13400 | ||
13401 | /* Now determine the call target, its name, value, | |
13402 | section. */ | |
411e1bfb AM |
13403 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13404 | r_indx, input_bfd)) | |
13405 | goto error_ret_free_internal; | |
ed7007c1 | 13406 | hash = ppc_elf_hash_entry (h); |
411e1bfb | 13407 | |
8843416a | 13408 | ok_dest = FALSE; |
8387904d | 13409 | fdh = NULL; |
7fe2b9a6 | 13410 | sym_value = 0; |
411e1bfb | 13411 | if (hash == NULL) |
721956f4 | 13412 | { |
411e1bfb | 13413 | sym_value = sym->st_value; |
c27b8c2a AM |
13414 | if (sym_sec != NULL |
13415 | && sym_sec->output_section != NULL) | |
13416 | ok_dest = TRUE; | |
721956f4 | 13417 | } |
7fe2b9a6 AM |
13418 | else if (hash->elf.root.type == bfd_link_hash_defined |
13419 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13420 | { | |
13421 | sym_value = hash->elf.root.u.def.value; | |
13422 | if (sym_sec->output_section != NULL) | |
13423 | ok_dest = TRUE; | |
13424 | } | |
13425 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13426 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13427 | { |
99877b66 | 13428 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13429 | use the func descriptor sym instead if it is |
13430 | defined. */ | |
ceb1f1ef | 13431 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13432 | && hash->oh != NULL) |
8387904d | 13433 | { |
8c5b4e52 | 13434 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13435 | if (fdh->elf.root.type == bfd_link_hash_defined |
13436 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13437 | { | |
13438 | sym_sec = fdh->elf.root.u.def.section; | |
13439 | sym_value = fdh->elf.root.u.def.value; | |
13440 | if (sym_sec->output_section != NULL) | |
13441 | ok_dest = TRUE; | |
13442 | } | |
99877b66 AM |
13443 | else |
13444 | fdh = NULL; | |
8387904d | 13445 | } |
7fe2b9a6 AM |
13446 | } |
13447 | else | |
13448 | { | |
13449 | bfd_set_error (bfd_error_bad_value); | |
13450 | goto error_ret_free_internal; | |
721956f4 AM |
13451 | } |
13452 | ||
8843416a | 13453 | destination = 0; |
6911b7dc | 13454 | local_off = 0; |
8843416a AM |
13455 | if (ok_dest) |
13456 | { | |
13457 | sym_value += irela->r_addend; | |
13458 | destination = (sym_value | |
13459 | + sym_sec->output_offset | |
13460 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13461 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13462 | ? hash->elf.other | |
13463 | : sym->st_other); | |
8843416a AM |
13464 | } |
13465 | ||
8387904d | 13466 | code_sec = sym_sec; |
e054468f | 13467 | code_value = sym_value; |
74f0fb50 AM |
13468 | opd = get_opd_info (sym_sec); |
13469 | if (opd != NULL) | |
8387904d AM |
13470 | { |
13471 | bfd_vma dest; | |
13472 | ||
74f0fb50 | 13473 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13474 | { |
51aecdc5 | 13475 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13476 | if (adjust == -1) |
13477 | continue; | |
e054468f | 13478 | code_value += adjust; |
8387904d AM |
13479 | sym_value += adjust; |
13480 | } | |
13481 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 13482 | &code_sec, &code_value, FALSE); |
8387904d AM |
13483 | if (dest != (bfd_vma) -1) |
13484 | { | |
13485 | destination = dest; | |
13486 | if (fdh != NULL) | |
13487 | { | |
13488 | /* Fixup old ABI sym to point at code | |
13489 | entry. */ | |
99877b66 | 13490 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13491 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13492 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13493 | } |
13494 | } | |
13495 | } | |
13496 | ||
721956f4 | 13497 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13498 | plt_ent = NULL; |
721956f4 | 13499 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13500 | &plt_ent, destination, |
13501 | local_off); | |
ad8e1ba5 | 13502 | |
05d0e962 AM |
13503 | if (r_type == R_PPC64_REL24_NOTOC) |
13504 | { | |
13505 | if (stub_type == ppc_stub_plt_call) | |
13506 | stub_type = ppc_stub_plt_call_notoc; | |
13507 | else if (stub_type == ppc_stub_long_branch | |
13508 | || (code_sec != NULL | |
13509 | && code_sec->output_section != NULL | |
13510 | && (((hash ? hash->elf.other : sym->st_other) | |
13511 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 13512 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
13513 | stub_type = ppc_stub_long_branch_notoc; |
13514 | } | |
13515 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13516 | { |
13517 | /* Check whether we need a TOC adjusting stub. | |
13518 | Since the linker pastes together pieces from | |
13519 | different object files when creating the | |
13520 | _init and _fini functions, it may be that a | |
13521 | call to what looks like a local sym is in | |
13522 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13523 | if ((code_sec != NULL |
13524 | && code_sec->output_section != NULL | |
33cb30a1 | 13525 | && (code_sec->has_toc_reloc |
918dc783 AM |
13526 | || code_sec->makes_toc_func_call) |
13527 | && (htab->sec_info[code_sec->id].toc_off | |
13528 | != htab->sec_info[section->id].toc_off)) | |
33cb30a1 AM |
13529 | || (((hash ? hash->elf.other : sym->st_other) |
13530 | & STO_PPC64_LOCAL_MASK) | |
13531 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13532 | stub_type = ppc_stub_long_branch_r2off; |
13533 | } | |
13534 | ||
721956f4 AM |
13535 | if (stub_type == ppc_stub_none) |
13536 | continue; | |
13537 | ||
411e1bfb AM |
13538 | /* __tls_get_addr calls might be eliminated. */ |
13539 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13540 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13541 | && hash != NULL |
ed7007c1 | 13542 | && is_tls_get_addr (&hash->elf, htab) |
411e1bfb AM |
13543 | && section->has_tls_reloc |
13544 | && irela != internal_relocs) | |
13545 | { | |
13546 | /* Get tls info. */ | |
f961d9dd | 13547 | unsigned char *tls_mask; |
411e1bfb | 13548 | |
3a71aa26 | 13549 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13550 | irela - 1, input_bfd)) |
13551 | goto error_ret_free_internal; | |
abc489c6 AM |
13552 | if ((*tls_mask & TLS_TLS) != 0 |
13553 | && (*tls_mask & (TLS_GD | TLS_LD)) == 0) | |
411e1bfb AM |
13554 | continue; |
13555 | } | |
13556 | ||
f378ab09 | 13557 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13558 | { |
6e1816be AM |
13559 | if (!htab->opd_abi |
13560 | && htab->params->plt_localentry0 != 0 | |
13561 | && is_elfv2_localentry0 (&hash->elf)) | |
13562 | htab->has_plt_localentry0 = 1; | |
13563 | else if (irela + 1 < irelaend | |
13564 | && irela[1].r_offset == irela->r_offset + 4 | |
13565 | && (ELF64_R_TYPE (irela[1].r_info) | |
13566 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13567 | { |
13568 | if (!tocsave_find (htab, INSERT, | |
13569 | &local_syms, irela + 1, input_bfd)) | |
13570 | goto error_ret_free_internal; | |
13571 | } | |
f378ab09 AM |
13572 | else |
13573 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13574 | } |
3b421ab3 | 13575 | |
721956f4 | 13576 | /* Support for grouping stub sections. */ |
6f20ed8a | 13577 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13578 | |
13579 | /* Get the name of this stub. */ | |
13580 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13581 | if (!stub_name) | |
13582 | goto error_ret_free_internal; | |
13583 | ||
13584 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 13585 | stub_name, FALSE, FALSE); |
721956f4 AM |
13586 | if (stub_entry != NULL) |
13587 | { | |
05d0e962 | 13588 | enum ppc_stub_type old_type; |
e10a07b3 | 13589 | |
05d0e962 AM |
13590 | /* A stub has already been created, but it may |
13591 | not be the required type. We shouldn't be | |
13592 | transitioning from plt_call to long_branch | |
13593 | stubs or vice versa, but we might be | |
13594 | upgrading from plt_call to plt_call_r2save or | |
13595 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13596 | free (stub_name); |
e10a07b3 AM |
13597 | if (htab->params->power10_stubs == -1) |
13598 | { | |
13599 | /* For --power10-stubs=auto, don't merge _notoc | |
13600 | and other varieties of stubs. (The _both | |
13601 | variety won't be created.) */ | |
13602 | bfd_boolean notoc = r_type == R_PPC64_REL24_NOTOC; | |
13603 | struct ppc_stub_hash_entry *alt_stub | |
13604 | = select_alt_stub (stub_entry, notoc); | |
13605 | ||
13606 | if (alt_stub == NULL) | |
13607 | { | |
13608 | alt_stub = (struct ppc_stub_hash_entry *) | |
13609 | stub_hash_newfunc (NULL, | |
13610 | &htab->stub_hash_table, | |
13611 | stub_entry->root.string); | |
13612 | if (alt_stub == NULL) | |
13613 | { | |
13614 | /* xgettext:c-format */ | |
13615 | _bfd_error_handler | |
13616 | (_("%pB: cannot create stub entry %s"), | |
13617 | section->owner, stub_entry->root.string); | |
13618 | goto error_ret_free_internal; | |
13619 | } | |
13620 | *alt_stub = *stub_entry; | |
13621 | stub_entry->root.next = &alt_stub->root; | |
13622 | if (notoc) | |
13623 | /* Sort notoc stubs first, for no good | |
13624 | reason. */ | |
13625 | alt_stub = stub_entry; | |
13626 | alt_stub->stub_type = stub_type; | |
13627 | } | |
13628 | stub_entry = alt_stub; | |
13629 | } | |
05d0e962 AM |
13630 | old_type = stub_entry->stub_type; |
13631 | switch (old_type) | |
13632 | { | |
13633 | default: | |
13634 | abort (); | |
13635 | ||
13636 | case ppc_stub_save_res: | |
13637 | continue; | |
13638 | ||
13639 | case ppc_stub_plt_call: | |
13640 | case ppc_stub_plt_call_r2save: | |
13641 | case ppc_stub_plt_call_notoc: | |
13642 | case ppc_stub_plt_call_both: | |
13643 | if (stub_type == ppc_stub_plt_call) | |
13644 | continue; | |
13645 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13646 | { | |
13647 | if (old_type == ppc_stub_plt_call_notoc) | |
13648 | stub_type = ppc_stub_plt_call_both; | |
13649 | } | |
13650 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13651 | { | |
13652 | if (old_type == ppc_stub_plt_call_r2save) | |
13653 | stub_type = ppc_stub_plt_call_both; | |
13654 | } | |
13655 | else | |
13656 | abort (); | |
13657 | break; | |
13658 | ||
13659 | case ppc_stub_plt_branch: | |
13660 | case ppc_stub_plt_branch_r2off: | |
13661 | case ppc_stub_plt_branch_notoc: | |
13662 | case ppc_stub_plt_branch_both: | |
13663 | old_type += (ppc_stub_long_branch | |
13664 | - ppc_stub_plt_branch); | |
13665 | /* Fall through. */ | |
13666 | case ppc_stub_long_branch: | |
13667 | case ppc_stub_long_branch_r2off: | |
13668 | case ppc_stub_long_branch_notoc: | |
13669 | case ppc_stub_long_branch_both: | |
13670 | if (stub_type == ppc_stub_long_branch) | |
13671 | continue; | |
13672 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13673 | { | |
13674 | if (old_type == ppc_stub_long_branch_notoc) | |
13675 | stub_type = ppc_stub_long_branch_both; | |
13676 | } | |
13677 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13678 | { | |
13679 | if (old_type == ppc_stub_long_branch_r2off) | |
13680 | stub_type = ppc_stub_long_branch_both; | |
13681 | } | |
13682 | else | |
13683 | abort (); | |
13684 | break; | |
13685 | } | |
13686 | if (old_type < stub_type) | |
794e51c0 | 13687 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13688 | continue; |
13689 | } | |
13690 | ||
25f53a85 | 13691 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13692 | if (stub_entry == NULL) |
13693 | { | |
13694 | free (stub_name); | |
6cdc0ccc AM |
13695 | error_ret_free_internal: |
13696 | if (elf_section_data (section)->relocs == NULL) | |
13697 | free (internal_relocs); | |
13698 | error_ret_free_local: | |
c9594989 AM |
13699 | if (symtab_hdr->contents |
13700 | != (unsigned char *) local_syms) | |
6cdc0ccc | 13701 | free (local_syms); |
b34976b6 | 13702 | return FALSE; |
721956f4 AM |
13703 | } |
13704 | ||
ad8e1ba5 | 13705 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13706 | if (stub_type >= ppc_stub_plt_call |
13707 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13708 | { |
05d0e962 AM |
13709 | stub_entry->target_value = sym_value; |
13710 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13711 | } |
13712 | else | |
13713 | { | |
05d0e962 AM |
13714 | stub_entry->target_value = code_value; |
13715 | stub_entry->target_section = code_sec; | |
e054468f | 13716 | } |
721956f4 | 13717 | stub_entry->h = hash; |
e054468f | 13718 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13719 | stub_entry->symtype |
13720 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13721 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13722 | |
3d58e1fc AM |
13723 | if (hash != NULL |
13724 | && (hash->elf.root.type == bfd_link_hash_defined | |
13725 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13726 | htab->stub_globals += 1; |
721956f4 AM |
13727 | } |
13728 | ||
13729 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13730 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13731 | free (internal_relocs); |
721956f4 | 13732 | } |
6cdc0ccc AM |
13733 | |
13734 | if (local_syms != NULL | |
13735 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13736 | { | |
13737 | if (!info->keep_memory) | |
13738 | free (local_syms); | |
13739 | else | |
13740 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13741 | } | |
721956f4 AM |
13742 | } |
13743 | ||
5c3dead3 | 13744 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13745 | stub sections. */ |
d4aaa2a0 | 13746 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13747 | { |
13748 | group->lr_restore = 0; | |
13749 | group->eh_size = 0; | |
13750 | if (group->stub_sec != NULL) | |
13751 | { | |
13752 | asection *stub_sec = group->stub_sec; | |
13753 | ||
13754 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13755 | || stub_sec->rawsize < stub_sec->size) | |
13756 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13757 | stub_sec->rawsize = stub_sec->size; | |
13758 | stub_sec->size = 0; | |
13759 | stub_sec->reloc_count = 0; | |
13760 | stub_sec->flags &= ~SEC_RELOC; | |
13761 | } | |
13762 | } | |
a804e476 AM |
13763 | if (htab->tga_group != NULL) |
13764 | { | |
13765 | /* See emit_tga_desc and emit_tga_desc_eh_frame. */ | |
13766 | htab->tga_group->eh_size | |
13767 | = 1 + 2 + (htab->opd_abi != 0) + 3 + 8 * 2 + 3 + 8 + 3; | |
13768 | htab->tga_group->lr_restore = 23 * 4; | |
13769 | htab->tga_group->stub_sec->size = 24 * 4; | |
13770 | } | |
eea6121a | 13771 | |
ba21f564 AM |
13772 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13773 | || htab->brlt->rawsize < htab->brlt->size) | |
13774 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13775 | htab->brlt->size = 0; |
84f5d08e AM |
13776 | htab->brlt->reloc_count = 0; |
13777 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13778 | if (htab->relbrlt != NULL) |
eea6121a | 13779 | htab->relbrlt->size = 0; |
721956f4 | 13780 | |
63bc6f6c | 13781 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13782 | |
a4b6fadd AM |
13783 | for (group = htab->group; group != NULL; group = group->next) |
13784 | if (group->needs_save_res) | |
13785 | group->stub_sec->size += htab->sfpr->size; | |
13786 | ||
176a0d42 AM |
13787 | if (info->emitrelocations |
13788 | && htab->glink != NULL && htab->glink->size != 0) | |
13789 | { | |
13790 | htab->glink->reloc_count = 1; | |
13791 | htab->glink->flags |= SEC_RELOC; | |
13792 | } | |
13793 | ||
58d180e8 AM |
13794 | if (htab->glink_eh_frame != NULL |
13795 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13796 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13797 | { |
2e0ce1c8 | 13798 | size_t size = 0, align = 4; |
58d180e8 | 13799 | |
d4aaa2a0 | 13800 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13801 | if (group->eh_size != 0) |
13802 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13803 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13804 | size += (24 + align - 1) & -align; |
58d180e8 | 13805 | if (size != 0) |
2e0ce1c8 AM |
13806 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13807 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13808 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13809 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13810 | htab->glink_eh_frame->size = size; | |
13811 | } | |
13812 | ||
e7d1c40c | 13813 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13814 | for (group = htab->group; group != NULL; group = group->next) |
13815 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13816 | { |
13817 | int align = abs (htab->params->plt_stub_align); | |
13818 | group->stub_sec->size | |
13819 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13820 | } | |
d4aaa2a0 AM |
13821 | |
13822 | for (group = htab->group; group != NULL; group = group->next) | |
13823 | if (group->stub_sec != NULL | |
13824 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13825 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13826 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13827 | break; |
13828 | ||
d4aaa2a0 | 13829 | if (group == NULL |
ba21f564 AM |
13830 | && (htab->brlt->rawsize == htab->brlt->size |
13831 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13832 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 | 13833 | && (htab->glink_eh_frame == NULL |
a804e476 AM |
13834 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size) |
13835 | && (htab->tga_group == NULL | |
13836 | || htab->stub_iteration > 1)) | |
5c3dead3 AM |
13837 | break; |
13838 | ||
721956f4 | 13839 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13840 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13841 | } |
13842 | ||
da44f4e5 AM |
13843 | if (htab->glink_eh_frame != NULL |
13844 | && htab->glink_eh_frame->size != 0) | |
13845 | { | |
13846 | bfd_vma val; | |
13847 | bfd_byte *p, *last_fde; | |
13848 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13849 | struct map_stub *group; |
da44f4e5 | 13850 | |
df136d64 AM |
13851 | /* It is necessary to at least have a rough outline of the |
13852 | linker generated CIEs and FDEs written before | |
13853 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13854 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13855 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13856 | if (p == NULL) | |
13857 | return FALSE; | |
13858 | htab->glink_eh_frame->contents = p; | |
13859 | last_fde = p; | |
2e0ce1c8 | 13860 | align = 4; |
da44f4e5 AM |
13861 | |
13862 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13863 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13864 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13865 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13866 | p += last_fde_len + 4; |
da44f4e5 | 13867 | |
d4aaa2a0 | 13868 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13869 | if (group->eh_size != 0) |
da44f4e5 | 13870 | { |
df136d64 | 13871 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13872 | last_fde = p; |
df136d64 | 13873 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13874 | /* FDE length. */ |
2e0ce1c8 | 13875 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13876 | p += 4; |
13877 | /* CIE pointer. */ | |
13878 | val = p - htab->glink_eh_frame->contents; | |
13879 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13880 | p += 4; | |
13881 | /* Offset to stub section, written later. */ | |
13882 | p += 4; | |
13883 | /* stub section size. */ | |
d4aaa2a0 | 13884 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13885 | p += 4; |
13886 | /* Augmentation. */ | |
13887 | p += 1; | |
df136d64 AM |
13888 | /* Make sure we don't have all nops. This is enough for |
13889 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13890 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13891 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13892 | } |
13893 | if (htab->glink != NULL && htab->glink->size != 0) | |
13894 | { | |
13895 | last_fde = p; | |
2e0ce1c8 | 13896 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13897 | /* FDE length. */ |
2e0ce1c8 | 13898 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13899 | p += 4; |
13900 | /* CIE pointer. */ | |
13901 | val = p - htab->glink_eh_frame->contents; | |
13902 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13903 | p += 4; | |
13904 | /* Offset to .glink, written later. */ | |
13905 | p += 4; | |
13906 | /* .glink size. */ | |
13907 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13908 | p += 4; | |
13909 | /* Augmentation. */ | |
13910 | p += 1; | |
13911 | ||
3cd7c7d7 | 13912 | *p++ = DW_CFA_advance_loc + (htab->has_plt_localentry0 ? 3 : 2); |
da44f4e5 AM |
13913 | *p++ = DW_CFA_register; |
13914 | *p++ = 65; | |
9f08fa5c | 13915 | *p++ = htab->opd_abi ? 12 : 0; |
3cd7c7d7 | 13916 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 4 : 2); |
da44f4e5 AM |
13917 | *p++ = DW_CFA_restore_extended; |
13918 | *p++ = 65; | |
2e0ce1c8 | 13919 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13920 | } |
13921 | /* Subsume any padding into the last FDE if user .eh_frame | |
13922 | sections are aligned more than glink_eh_frame. Otherwise any | |
13923 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13924 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13925 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13926 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13927 | htab->glink_eh_frame->size = size + pad; |
13928 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13929 | } | |
13930 | ||
d969d15f | 13931 | maybe_strip_output (info, htab->brlt); |
2efec98b AM |
13932 | if (htab->relbrlt != NULL) |
13933 | maybe_strip_output (info, htab->relbrlt); | |
d969d15f AM |
13934 | if (htab->glink_eh_frame != NULL) |
13935 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13936 | |
b34976b6 | 13937 | return TRUE; |
721956f4 AM |
13938 | } |
13939 | ||
13940 | /* Called after we have determined section placement. If sections | |
805fc799 | 13941 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13942 | |
805fc799 | 13943 | bfd_vma |
1c865ab2 | 13944 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13945 | { |
805fc799 | 13946 | asection *s; |
a27e685f | 13947 | bfd_vma TOCstart, adjust; |
721956f4 | 13948 | |
43417696 AM |
13949 | if (info != NULL) |
13950 | { | |
13951 | struct elf_link_hash_entry *h; | |
13952 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13953 | ||
13954 | if (is_elf_hash_table (htab) | |
13955 | && htab->hgot != NULL) | |
13956 | h = htab->hgot; | |
13957 | else | |
13958 | { | |
13959 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13960 | if (is_elf_hash_table (htab)) | |
13961 | htab->hgot = h; | |
13962 | } | |
13963 | if (h != NULL | |
13964 | && h->root.type == bfd_link_hash_defined | |
13965 | && !h->root.linker_def | |
13966 | && (!is_elf_hash_table (htab) | |
13967 | || h->def_regular)) | |
13968 | { | |
ed7007c1 | 13969 | TOCstart = defined_sym_val (h) - TOC_BASE_OFF; |
43417696 AM |
13970 | _bfd_set_gp_value (obfd, TOCstart); |
13971 | return TOCstart; | |
13972 | } | |
13973 | } | |
13974 | ||
805fc799 AM |
13975 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13976 | order. The TOC starts where the first of these sections starts. */ | |
13977 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13978 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13979 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13980 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13981 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13982 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13983 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13984 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13985 | { |
13986 | /* This may happen for | |
13987 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13988 | .toc directive | |
13989 | o bad linker script | |
13990 | o --gc-sections and empty TOC sections | |
13991 | ||
13992 | FIXME: Warn user? */ | |
13993 | ||
13994 | /* Look for a likely section. We probably won't even be | |
13995 | using TOCstart. */ | |
13996 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13997 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13998 | | SEC_EXCLUDE)) | |
805fc799 AM |
13999 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
14000 | break; | |
721956f4 | 14001 | if (s == NULL) |
805fc799 | 14002 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 14003 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
14004 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
14005 | break; | |
721956f4 | 14006 | if (s == NULL) |
805fc799 | 14007 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
14008 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
14009 | == SEC_ALLOC) | |
805fc799 | 14010 | break; |
721956f4 | 14011 | if (s == NULL) |
805fc799 | 14012 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 14013 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
14014 | break; |
14015 | } | |
721956f4 | 14016 | |
805fc799 AM |
14017 | TOCstart = 0; |
14018 | if (s != NULL) | |
14019 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 14020 | |
a27e685f AM |
14021 | /* Force alignment. */ |
14022 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
14023 | TOCstart -= adjust; | |
1c865ab2 AM |
14024 | _bfd_set_gp_value (obfd, TOCstart); |
14025 | ||
810d4e75 | 14026 | if (info != NULL && s != NULL) |
1c865ab2 AM |
14027 | { |
14028 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14029 | ||
810d4e75 AM |
14030 | if (htab != NULL) |
14031 | { | |
14032 | if (htab->elf.hgot != NULL) | |
14033 | { | |
a27e685f | 14034 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
14035 | htab->elf.hgot->root.u.def.section = s; |
14036 | } | |
14037 | } | |
14038 | else | |
1c865ab2 | 14039 | { |
810d4e75 AM |
14040 | struct bfd_link_hash_entry *bh = NULL; |
14041 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
14042 | s, TOC_BASE_OFF - adjust, |
14043 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
14044 | } |
14045 | } | |
805fc799 | 14046 | return TOCstart; |
721956f4 AM |
14047 | } |
14048 | ||
a345bc8d | 14049 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 14050 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
14051 | |
14052 | static bfd_boolean | |
49c09209 | 14053 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
14054 | { |
14055 | struct bfd_link_info *info; | |
14056 | struct ppc_link_hash_table *htab; | |
49c09209 | 14057 | struct plt_entry *ent; |
a345bc8d AM |
14058 | asection *s; |
14059 | ||
14060 | if (h->root.type == bfd_link_hash_indirect) | |
14061 | return TRUE; | |
14062 | ||
49c09209 AM |
14063 | info = inf; |
14064 | htab = ppc_hash_table (info); | |
14065 | if (htab == NULL) | |
14066 | return FALSE; | |
14067 | ||
14068 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14069 | if (ent->plt.offset != (bfd_vma) -1) | |
14070 | { | |
14071 | /* This symbol has an entry in the procedure linkage | |
14072 | table. Set it up. */ | |
14073 | Elf_Internal_Rela rela; | |
2d7ad24e | 14074 | asection *plt, *relplt; |
49c09209 AM |
14075 | bfd_byte *loc; |
14076 | ||
30845f11 | 14077 | if (use_local_plt (info, h)) |
49c09209 AM |
14078 | { |
14079 | if (!(h->def_regular | |
14080 | && (h->root.type == bfd_link_hash_defined | |
14081 | || h->root.type == bfd_link_hash_defweak))) | |
14082 | continue; | |
2d7ad24e AM |
14083 | if (h->type == STT_GNU_IFUNC) |
14084 | { | |
14085 | plt = htab->elf.iplt; | |
14086 | relplt = htab->elf.irelplt; | |
cebd6b8a | 14087 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
14088 | if (htab->opd_abi) |
14089 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14090 | else | |
14091 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14092 | } | |
49c09209 | 14093 | else |
2d7ad24e AM |
14094 | { |
14095 | plt = htab->pltlocal; | |
14096 | if (bfd_link_pic (info)) | |
14097 | { | |
14098 | relplt = htab->relpltlocal; | |
14099 | if (htab->opd_abi) | |
14100 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14101 | else | |
14102 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14103 | } | |
14104 | else | |
14105 | relplt = NULL; | |
14106 | } | |
ed7007c1 | 14107 | rela.r_addend = defined_sym_val (h) + ent->addend; |
2d7ad24e AM |
14108 | |
14109 | if (relplt == NULL) | |
14110 | { | |
14111 | loc = plt->contents + ent->plt.offset; | |
14112 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
14113 | if (htab->opd_abi) | |
14114 | { | |
14115 | bfd_vma toc = elf_gp (info->output_bfd); | |
14116 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
14117 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14118 | } | |
14119 | } | |
14120 | else | |
14121 | { | |
14122 | rela.r_offset = (plt->output_section->vma | |
14123 | + plt->output_offset | |
14124 | + ent->plt.offset); | |
14125 | loc = relplt->contents + (relplt->reloc_count++ | |
14126 | * sizeof (Elf64_External_Rela)); | |
14127 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14128 | } | |
49c09209 AM |
14129 | } |
14130 | else | |
14131 | { | |
14132 | rela.r_offset = (htab->elf.splt->output_section->vma | |
14133 | + htab->elf.splt->output_offset | |
14134 | + ent->plt.offset); | |
14135 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
14136 | rela.r_addend = ent->addend; | |
14137 | loc = (htab->elf.srelplt->contents | |
14138 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
14139 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
14140 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
cebd6b8a | 14141 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e | 14142 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 14143 | } |
49c09209 AM |
14144 | } |
14145 | ||
a345bc8d AM |
14146 | if (!h->pointer_equality_needed) |
14147 | return TRUE; | |
14148 | ||
14149 | if (h->def_regular) | |
14150 | return TRUE; | |
14151 | ||
9e390558 | 14152 | s = htab->global_entry; |
49c09209 AM |
14153 | if (s == NULL || s->size == 0) |
14154 | return TRUE; | |
14155 | ||
14156 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14157 | if (ent->plt.offset != (bfd_vma) -1 | |
14158 | && ent->addend == 0) | |
a345bc8d AM |
14159 | { |
14160 | bfd_byte *p; | |
14161 | asection *plt; | |
14162 | bfd_vma off; | |
14163 | ||
a345bc8d | 14164 | p = s->contents + h->root.u.def.value; |
33e44f2e | 14165 | plt = htab->elf.splt; |
30845f11 | 14166 | if (use_local_plt (info, h)) |
2d7ad24e AM |
14167 | { |
14168 | if (h->type == STT_GNU_IFUNC) | |
14169 | plt = htab->elf.iplt; | |
14170 | else | |
14171 | plt = htab->pltlocal; | |
14172 | } | |
49c09209 | 14173 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
14174 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
14175 | ||
14176 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
14177 | { | |
14178 | info->callbacks->einfo | |
c1c8c1ef | 14179 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
14180 | h->root.root.string); |
14181 | bfd_set_error (bfd_error_bad_value); | |
14182 | htab->stub_error = TRUE; | |
14183 | } | |
14184 | ||
7341d5e2 AM |
14185 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
14186 | if (htab->params->emit_stub_syms) | |
14187 | { | |
14188 | size_t len = strlen (h->root.root.string); | |
14189 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
14190 | ||
14191 | if (name == NULL) | |
14192 | return FALSE; | |
14193 | ||
14194 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
14195 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
14196 | if (h == NULL) | |
14197 | return FALSE; | |
14198 | if (h->root.type == bfd_link_hash_new) | |
14199 | { | |
14200 | h->root.type = bfd_link_hash_defined; | |
14201 | h->root.u.def.section = s; | |
14202 | h->root.u.def.value = p - s->contents; | |
14203 | h->ref_regular = 1; | |
14204 | h->def_regular = 1; | |
14205 | h->ref_regular_nonweak = 1; | |
14206 | h->forced_local = 1; | |
14207 | h->non_elf = 0; | |
2ec55de3 | 14208 | h->root.linker_def = 1; |
7341d5e2 AM |
14209 | } |
14210 | } | |
14211 | ||
a345bc8d AM |
14212 | if (PPC_HA (off) != 0) |
14213 | { | |
14214 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
14215 | p += 4; | |
14216 | } | |
14217 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
14218 | p += 4; | |
14219 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
14220 | p += 4; | |
407aa07c | 14221 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14222 | break; |
14223 | } | |
14224 | return TRUE; | |
14225 | } | |
14226 | ||
49c09209 AM |
14227 | /* Write PLT relocs for locals. */ |
14228 | ||
14229 | static bfd_boolean | |
14230 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
14231 | { | |
14232 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14233 | bfd *ibfd; | |
14234 | ||
14235 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14236 | { | |
14237 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14238 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14239 | Elf_Internal_Shdr *symtab_hdr; | |
14240 | bfd_size_type locsymcount; | |
14241 | Elf_Internal_Sym *local_syms = NULL; | |
14242 | struct plt_entry *ent; | |
14243 | ||
14244 | if (!is_ppc64_elf (ibfd)) | |
14245 | continue; | |
14246 | ||
14247 | lgot_ents = elf_local_got_ents (ibfd); | |
14248 | if (!lgot_ents) | |
14249 | continue; | |
14250 | ||
14251 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14252 | locsymcount = symtab_hdr->sh_info; | |
14253 | end_lgot_ents = lgot_ents + locsymcount; | |
14254 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14255 | end_local_plt = local_plt + locsymcount; | |
14256 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14257 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14258 | if (ent->plt.offset != (bfd_vma) -1) | |
14259 | { | |
14260 | Elf_Internal_Sym *sym; | |
14261 | asection *sym_sec; | |
14262 | asection *plt, *relplt; | |
14263 | bfd_byte *loc; | |
14264 | bfd_vma val; | |
49c09209 AM |
14265 | |
14266 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14267 | lplt - local_plt, ibfd)) | |
14268 | { | |
c9594989 | 14269 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
49c09209 AM |
14270 | free (local_syms); |
14271 | return FALSE; | |
14272 | } | |
14273 | ||
14274 | val = sym->st_value + ent->addend; | |
49c09209 AM |
14275 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
14276 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14277 | ||
2d7ad24e AM |
14278 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14279 | { | |
cebd6b8a | 14280 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
14281 | plt = htab->elf.iplt; |
14282 | relplt = htab->elf.irelplt; | |
14283 | } | |
14284 | else | |
14285 | { | |
14286 | plt = htab->pltlocal; | |
14287 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
14288 | } | |
49c09209 | 14289 | |
2d7ad24e AM |
14290 | if (relplt == NULL) |
14291 | { | |
14292 | loc = plt->contents + ent->plt.offset; | |
14293 | bfd_put_64 (info->output_bfd, val, loc); | |
14294 | if (htab->opd_abi) | |
14295 | { | |
14296 | bfd_vma toc = elf_gp (ibfd); | |
14297 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14298 | } | |
14299 | } | |
49c09209 | 14300 | else |
2d7ad24e AM |
14301 | { |
14302 | Elf_Internal_Rela rela; | |
14303 | rela.r_offset = (ent->plt.offset | |
14304 | + plt->output_offset | |
14305 | + plt->output_section->vma); | |
14306 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14307 | { | |
14308 | if (htab->opd_abi) | |
14309 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14310 | else | |
14311 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14312 | } | |
14313 | else | |
14314 | { | |
14315 | if (htab->opd_abi) | |
14316 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14317 | else | |
14318 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14319 | } | |
14320 | rela.r_addend = val; | |
14321 | loc = relplt->contents + (relplt->reloc_count++ | |
14322 | * sizeof (Elf64_External_Rela)); | |
14323 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14324 | } | |
49c09209 AM |
14325 | } |
14326 | ||
14327 | if (local_syms != NULL | |
14328 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14329 | { | |
14330 | if (!info->keep_memory) | |
14331 | free (local_syms); | |
14332 | else | |
14333 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14334 | } | |
14335 | } | |
14336 | return TRUE; | |
14337 | } | |
14338 | ||
a804e476 AM |
14339 | /* Emit the static wrapper function preserving registers around a |
14340 | __tls_get_addr_opt call. */ | |
14341 | ||
14342 | static bfd_boolean | |
14343 | emit_tga_desc (struct ppc_link_hash_table *htab) | |
14344 | { | |
14345 | asection *stub_sec = htab->tga_group->stub_sec; | |
14346 | unsigned int cfa_updt = 11 * 4; | |
14347 | bfd_byte *p; | |
14348 | bfd_vma to, from, delta; | |
14349 | ||
14350 | BFD_ASSERT (htab->tga_desc_fd->elf.root.type == bfd_link_hash_defined | |
14351 | && htab->tga_desc_fd->elf.root.u.def.section == stub_sec | |
14352 | && htab->tga_desc_fd->elf.root.u.def.value == 0); | |
14353 | to = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
14354 | from = defined_sym_val (&htab->tga_desc_fd->elf) + cfa_updt; | |
14355 | delta = to - from; | |
14356 | if (delta + (1 << 25) >= 1 << 26) | |
14357 | { | |
14358 | _bfd_error_handler (_("__tls_get_addr call offset overflow")); | |
14359 | htab->stub_error = TRUE; | |
14360 | return FALSE; | |
14361 | } | |
14362 | ||
14363 | p = stub_sec->contents; | |
14364 | p = tls_get_addr_prologue (htab->elf.dynobj, p, htab); | |
14365 | bfd_put_32 (stub_sec->owner, B_DOT | 1 | (delta & 0x3fffffc), p); | |
14366 | p += 4; | |
14367 | p = tls_get_addr_epilogue (htab->elf.dynobj, p, htab); | |
14368 | return stub_sec->size == (bfd_size_type) (p - stub_sec->contents); | |
14369 | } | |
14370 | ||
14371 | /* Emit eh_frame describing the static wrapper function. */ | |
14372 | ||
14373 | static bfd_byte * | |
14374 | emit_tga_desc_eh_frame (struct ppc_link_hash_table *htab, bfd_byte *p) | |
14375 | { | |
14376 | unsigned int cfa_updt = 11 * 4; | |
14377 | unsigned int i; | |
14378 | ||
14379 | *p++ = DW_CFA_advance_loc + cfa_updt / 4; | |
14380 | *p++ = DW_CFA_def_cfa_offset; | |
14381 | if (htab->opd_abi) | |
14382 | { | |
14383 | *p++ = 128; | |
14384 | *p++ = 1; | |
14385 | } | |
14386 | else | |
14387 | *p++ = 96; | |
14388 | *p++ = DW_CFA_offset_extended_sf; | |
14389 | *p++ = 65; | |
14390 | *p++ = (-16 / 8) & 0x7f; | |
14391 | for (i = 4; i < 12; i++) | |
14392 | { | |
14393 | *p++ = DW_CFA_offset + i; | |
14394 | *p++ = (htab->opd_abi ? 13 : 12) - i; | |
14395 | } | |
14396 | *p++ = DW_CFA_advance_loc + 10; | |
14397 | *p++ = DW_CFA_def_cfa_offset; | |
14398 | *p++ = 0; | |
14399 | for (i = 4; i < 12; i++) | |
14400 | *p++ = DW_CFA_restore + i; | |
14401 | *p++ = DW_CFA_advance_loc + 2; | |
14402 | *p++ = DW_CFA_restore_extended; | |
14403 | *p++ = 65; | |
14404 | return p; | |
14405 | } | |
14406 | ||
721956f4 AM |
14407 | /* Build all the stubs associated with the current output file. |
14408 | The stubs are kept in a hash table attached to the main linker | |
14409 | hash table. This function is called via gldelf64ppc_finish. */ | |
14410 | ||
b34976b6 | 14411 | bfd_boolean |
e7d1c40c | 14412 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14413 | char **stats) |
5d1634d7 AM |
14414 | { |
14415 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14416 | struct map_stub *group; |
721956f4 | 14417 | asection *stub_sec; |
5d1634d7 | 14418 | bfd_byte *p; |
e717da7e | 14419 | int stub_sec_count = 0; |
5d1634d7 | 14420 | |
4dfe6ac6 NC |
14421 | if (htab == NULL) |
14422 | return FALSE; | |
14423 | ||
eea6121a | 14424 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14425 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14426 | { |
14427 | group->eh_size = 0; | |
14428 | group->lr_restore = 0; | |
14429 | if ((stub_sec = group->stub_sec) != NULL | |
14430 | && stub_sec->size != 0) | |
14431 | { | |
14432 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14433 | stub_sec->size); | |
14434 | if (stub_sec->contents == NULL) | |
14435 | return FALSE; | |
14436 | stub_sec->size = 0; | |
14437 | } | |
14438 | } | |
5d1634d7 | 14439 | |
23eb7e01 | 14440 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14441 | { |
9f951329 | 14442 | unsigned int indx; |
ad8e1ba5 | 14443 | bfd_vma plt0; |
9f951329 | 14444 | |
721956f4 | 14445 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14446 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14447 | { |
14448 | struct elf_link_hash_entry *h; | |
468392fb AM |
14449 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
14450 | TRUE, FALSE, FALSE); | |
97b639ba AM |
14451 | if (h == NULL) |
14452 | return FALSE; | |
14453 | if (h->root.type == bfd_link_hash_new) | |
14454 | { | |
14455 | h->root.type = bfd_link_hash_defined; | |
14456 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14457 | h->root.u.def.value = 8; |
f5385ebf AM |
14458 | h->ref_regular = 1; |
14459 | h->def_regular = 1; | |
14460 | h->ref_regular_nonweak = 1; | |
14461 | h->forced_local = 1; | |
14462 | h->non_elf = 0; | |
2ec55de3 | 14463 | h->root.linker_def = 1; |
97b639ba AM |
14464 | } |
14465 | } | |
33e44f2e AM |
14466 | plt0 = (htab->elf.splt->output_section->vma |
14467 | + htab->elf.splt->output_offset | |
14468 | - 16); | |
176a0d42 AM |
14469 | if (info->emitrelocations) |
14470 | { | |
14471 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
14472 | if (r == NULL) | |
14473 | return FALSE; | |
14474 | r->r_offset = (htab->glink->output_offset | |
14475 | + htab->glink->output_section->vma); | |
14476 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
14477 | r->r_addend = plt0; | |
14478 | } | |
4ce794b7 | 14479 | p = htab->glink->contents; |
176a0d42 | 14480 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
14481 | bfd_put_64 (htab->glink->owner, plt0, p); |
14482 | p += 8; | |
b9e5796b AM |
14483 | if (htab->opd_abi) |
14484 | { | |
14485 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
14486 | p += 4; | |
14487 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14488 | p += 4; | |
14489 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14490 | p += 4; | |
14491 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
14492 | p += 4; | |
14493 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
14494 | p += 4; | |
14495 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14496 | p += 4; | |
14497 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14498 | p += 4; | |
14499 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
14500 | p += 4; | |
14501 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14502 | p += 4; | |
14503 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
14504 | p += 4; | |
14505 | } | |
14506 | else | |
14507 | { | |
3cd7c7d7 AM |
14508 | unsigned int insn; |
14509 | ||
14510 | /* 0: | |
14511 | . .quad plt0-1f # plt0 entry relative to 1: | |
14512 | # | |
14513 | # We get here with r12 initially @ a glink branch | |
14514 | # Load the address of _dl_runtime_resolve from plt0 and | |
14515 | # jump to it, with r0 set to the index of the PLT entry | |
14516 | # to be resolved and r11 the link map. | |
14517 | __glink_PLTresolve: | |
14518 | . std %r2,24(%r1) # optional | |
14519 | . mflr %r0 | |
14520 | . bcl 20,31,1f | |
14521 | 1: | |
14522 | . mflr %r11 | |
14523 | . mtlr %r0 | |
14524 | . ld %r0,(0b-1b)(%r11) | |
14525 | . sub %r12,%r12,%r11 | |
14526 | . add %r11,%r0,%r11 | |
14527 | . addi %r0,%r12,1b-2f | |
14528 | . ld %r12,0(%r11) | |
14529 | . srdi %r0,%r0,2 | |
14530 | . mtctr %r12 | |
14531 | . ld %r11,8(%r11) | |
14532 | . bctr | |
14533 | 2: | |
14534 | . b __glink_PLTresolve | |
14535 | . ... | |
14536 | . b __glink_PLTresolve */ | |
14537 | ||
14538 | if (htab->has_plt_localentry0) | |
14539 | { | |
14540 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); | |
14541 | p += 4; | |
14542 | } | |
b9e5796b AM |
14543 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); |
14544 | p += 4; | |
14545 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14546 | p += 4; | |
14547 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14548 | p += 4; | |
b9e5796b AM |
14549 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); |
14550 | p += 4; | |
3cd7c7d7 AM |
14551 | if (htab->has_plt_localentry0) |
14552 | insn = LD_R0_0R11 | (-20 & 0xfffc); | |
14553 | else | |
14554 | insn = LD_R0_0R11 | (-16 & 0xfffc); | |
14555 | bfd_put_32 (htab->glink->owner, insn, p); | |
14556 | p += 4; | |
b9e5796b AM |
14557 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
14558 | p += 4; | |
3cd7c7d7 | 14559 | bfd_put_32 (htab->glink->owner, ADD_R11_R0_R11, p); |
b9e5796b | 14560 | p += 4; |
3cd7c7d7 | 14561 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-44 & 0xffff), p); |
b9e5796b AM |
14562 | p += 4; |
14563 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14564 | p += 4; | |
14565 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
14566 | p += 4; | |
14567 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14568 | p += 4; | |
14569 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
14570 | p += 4; | |
14571 | } | |
407aa07c AM |
14572 | bfd_put_32 (htab->glink->owner, BCTR, p); |
14573 | p += 4; | |
c75bc4f7 | 14574 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 14575 | |
9f951329 AM |
14576 | /* Build the .glink lazy link call stubs. */ |
14577 | indx = 0; | |
9e390558 | 14578 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 14579 | { |
b9e5796b | 14580 | if (htab->opd_abi) |
9f951329 | 14581 | { |
b9e5796b AM |
14582 | if (indx < 0x8000) |
14583 | { | |
14584 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
14585 | p += 4; | |
14586 | } | |
14587 | else | |
14588 | { | |
14589 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
14590 | p += 4; | |
14591 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
14592 | p); | |
14593 | p += 4; | |
14594 | } | |
9f951329 | 14595 | } |
4ce794b7 | 14596 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 14597 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 14598 | indx++; |
9f951329 AM |
14599 | p += 4; |
14600 | } | |
5d1634d7 | 14601 | } |
5d1634d7 | 14602 | |
a804e476 AM |
14603 | if (htab->tga_group != NULL) |
14604 | { | |
14605 | htab->tga_group->lr_restore = 23 * 4; | |
14606 | htab->tga_group->stub_sec->size = 24 * 4; | |
14607 | if (!emit_tga_desc (htab)) | |
14608 | return FALSE; | |
14609 | if (htab->glink_eh_frame != NULL | |
14610 | && htab->glink_eh_frame->size != 0) | |
14611 | { | |
14612 | size_t align = 4; | |
14613 | ||
14614 | p = htab->glink_eh_frame->contents; | |
14615 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14616 | p += 17; | |
14617 | htab->tga_group->eh_size = emit_tga_desc_eh_frame (htab, p) - p; | |
14618 | } | |
14619 | } | |
14620 | ||
49c09209 AM |
14621 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
14622 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
14623 | ||
14624 | if (!write_plt_relocs_for_local_syms (info)) | |
14625 | return FALSE; | |
9e390558 | 14626 | |
7341d5e2 | 14627 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14628 | { |
4ce794b7 | 14629 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14630 | htab->brlt->size); |
4ce794b7 | 14631 | if (htab->brlt->contents == NULL) |
b34976b6 | 14632 | return FALSE; |
721956f4 | 14633 | } |
ee75fd95 | 14634 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14635 | { |
14636 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14637 | htab->relbrlt->size); |
63bc6f6c AM |
14638 | if (htab->relbrlt->contents == NULL) |
14639 | return FALSE; | |
14640 | } | |
5d1634d7 | 14641 | |
721956f4 AM |
14642 | /* Build the stubs as directed by the stub hash table. */ |
14643 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14644 | |
a4b6fadd AM |
14645 | for (group = htab->group; group != NULL; group = group->next) |
14646 | if (group->needs_save_res) | |
7dda8d3c | 14647 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14648 | |
aa8a7074 AM |
14649 | if (htab->relbrlt != NULL) |
14650 | htab->relbrlt->reloc_count = 0; | |
14651 | ||
e7d1c40c | 14652 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14653 | for (group = htab->group; group != NULL; group = group->next) |
14654 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14655 | { |
14656 | int align = abs (htab->params->plt_stub_align); | |
14657 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14658 | } | |
794e51c0 | 14659 | |
7dda8d3c AM |
14660 | for (group = htab->group; group != NULL; group = group->next) |
14661 | if (group->needs_save_res) | |
14662 | { | |
14663 | stub_sec = group->stub_sec; | |
14664 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14665 | htab->sfpr->contents, htab->sfpr->size); | |
14666 | if (htab->params->emit_stub_syms) | |
14667 | { | |
14668 | unsigned int i; | |
14669 | ||
14670 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14671 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
14672 | return FALSE; | |
14673 | } | |
14674 | } | |
14675 | ||
df136d64 AM |
14676 | if (htab->glink_eh_frame != NULL |
14677 | && htab->glink_eh_frame->size != 0) | |
14678 | { | |
14679 | bfd_vma val; | |
14680 | size_t align = 4; | |
14681 | ||
14682 | p = htab->glink_eh_frame->contents; | |
14683 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14684 | ||
14685 | for (group = htab->group; group != NULL; group = group->next) | |
14686 | if (group->eh_size != 0) | |
14687 | { | |
14688 | /* Offset to stub section. */ | |
14689 | val = (group->stub_sec->output_section->vma | |
14690 | + group->stub_sec->output_offset); | |
14691 | val -= (htab->glink_eh_frame->output_section->vma | |
14692 | + htab->glink_eh_frame->output_offset | |
14693 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14694 | if (val + 0x80000000 > 0xffffffff) | |
14695 | { | |
14696 | _bfd_error_handler | |
14697 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14698 | group->stub_sec->name); | |
14699 | return FALSE; | |
14700 | } | |
14701 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14702 | p += (group->eh_size + 17 + 3) & -4; | |
14703 | } | |
14704 | if (htab->glink != NULL && htab->glink->size != 0) | |
14705 | { | |
14706 | /* Offset to .glink. */ | |
14707 | val = (htab->glink->output_section->vma | |
14708 | + htab->glink->output_offset | |
14709 | + 8); | |
14710 | val -= (htab->glink_eh_frame->output_section->vma | |
14711 | + htab->glink_eh_frame->output_offset | |
14712 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14713 | if (val + 0x80000000 > 0xffffffff) | |
14714 | { | |
14715 | _bfd_error_handler | |
14716 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14717 | htab->glink->name); | |
14718 | return FALSE; | |
14719 | } | |
14720 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14721 | p += (24 + align - 1) & -align; | |
14722 | } | |
14723 | } | |
14724 | ||
d4aaa2a0 AM |
14725 | for (group = htab->group; group != NULL; group = group->next) |
14726 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14727 | { |
14728 | stub_sec_count += 1; | |
c9301e31 AM |
14729 | if (stub_sec->rawsize != stub_sec->size |
14730 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14731 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14732 | break; |
14733 | } | |
5d1634d7 | 14734 | |
25516cc5 | 14735 | if (group != NULL) |
5d1634d7 | 14736 | { |
b34976b6 | 14737 | htab->stub_error = TRUE; |
cf97bcb0 | 14738 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14739 | } |
721956f4 | 14740 | |
d2a300cf AM |
14741 | if (htab->stub_error) |
14742 | return FALSE; | |
14743 | ||
14744 | if (stats != NULL) | |
14745 | { | |
988b7300 AM |
14746 | char *groupmsg; |
14747 | if (asprintf (&groupmsg, | |
14748 | ngettext ("linker stubs in %u group\n", | |
14749 | "linker stubs in %u groups\n", | |
14750 | stub_sec_count), | |
14751 | stub_sec_count) < 0) | |
14752 | *stats = NULL; | |
14753 | else | |
14754 | { | |
14755 | if (asprintf (stats, _("%s" | |
14756 | " branch %lu\n" | |
14757 | " branch toc adj %lu\n" | |
14758 | " branch notoc %lu\n" | |
14759 | " branch both %lu\n" | |
14760 | " long branch %lu\n" | |
14761 | " long toc adj %lu\n" | |
14762 | " long notoc %lu\n" | |
14763 | " long both %lu\n" | |
14764 | " plt call %lu\n" | |
14765 | " plt call save %lu\n" | |
14766 | " plt call notoc %lu\n" | |
14767 | " plt call both %lu\n" | |
14768 | " global entry %lu"), | |
14769 | groupmsg, | |
14770 | htab->stub_count[ppc_stub_long_branch - 1], | |
14771 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
14772 | htab->stub_count[ppc_stub_long_branch_notoc - 1], | |
14773 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
14774 | htab->stub_count[ppc_stub_plt_branch - 1], | |
14775 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
14776 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], | |
14777 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
14778 | htab->stub_count[ppc_stub_plt_call - 1], | |
14779 | htab->stub_count[ppc_stub_plt_call_r2save - 1], | |
14780 | htab->stub_count[ppc_stub_plt_call_notoc - 1], | |
14781 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
14782 | htab->stub_count[ppc_stub_global_entry - 1]) < 0) | |
14783 | *stats = NULL; | |
14784 | free (groupmsg); | |
14785 | } | |
d2a300cf AM |
14786 | } |
14787 | return TRUE; | |
5bd4f169 AM |
14788 | } |
14789 | ||
60124e18 AM |
14790 | /* What to do when ld finds relocations against symbols defined in |
14791 | discarded sections. */ | |
14792 | ||
14793 | static unsigned int | |
14794 | ppc64_elf_action_discarded (asection *sec) | |
14795 | { | |
14796 | if (strcmp (".opd", sec->name) == 0) | |
14797 | return 0; | |
14798 | ||
14799 | if (strcmp (".toc", sec->name) == 0) | |
14800 | return 0; | |
14801 | ||
bce50a28 JJ |
14802 | if (strcmp (".toc1", sec->name) == 0) |
14803 | return 0; | |
14804 | ||
60124e18 AM |
14805 | return _bfd_elf_default_action_discarded (sec); |
14806 | } | |
14807 | ||
e59a1001 AM |
14808 | /* These are the dynamic relocations supported by glibc. */ |
14809 | ||
14810 | static bfd_boolean | |
14811 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) | |
14812 | { | |
14813 | switch (r_type) | |
14814 | { | |
14815 | case R_PPC64_RELATIVE: | |
14816 | case R_PPC64_NONE: | |
14817 | case R_PPC64_ADDR64: | |
14818 | case R_PPC64_GLOB_DAT: | |
14819 | case R_PPC64_IRELATIVE: | |
14820 | case R_PPC64_JMP_IREL: | |
14821 | case R_PPC64_JMP_SLOT: | |
14822 | case R_PPC64_DTPMOD64: | |
14823 | case R_PPC64_DTPREL64: | |
14824 | case R_PPC64_TPREL64: | |
14825 | case R_PPC64_TPREL16_LO_DS: | |
14826 | case R_PPC64_TPREL16_DS: | |
14827 | case R_PPC64_TPREL16: | |
14828 | case R_PPC64_TPREL16_LO: | |
14829 | case R_PPC64_TPREL16_HI: | |
14830 | case R_PPC64_TPREL16_HIGH: | |
14831 | case R_PPC64_TPREL16_HA: | |
14832 | case R_PPC64_TPREL16_HIGHA: | |
14833 | case R_PPC64_TPREL16_HIGHER: | |
14834 | case R_PPC64_TPREL16_HIGHEST: | |
14835 | case R_PPC64_TPREL16_HIGHERA: | |
14836 | case R_PPC64_TPREL16_HIGHESTA: | |
14837 | case R_PPC64_ADDR16_LO_DS: | |
14838 | case R_PPC64_ADDR16_LO: | |
14839 | case R_PPC64_ADDR16_HI: | |
14840 | case R_PPC64_ADDR16_HIGH: | |
14841 | case R_PPC64_ADDR16_HA: | |
14842 | case R_PPC64_ADDR16_HIGHA: | |
14843 | case R_PPC64_REL30: | |
14844 | case R_PPC64_COPY: | |
14845 | case R_PPC64_UADDR64: | |
14846 | case R_PPC64_UADDR32: | |
14847 | case R_PPC64_ADDR32: | |
14848 | case R_PPC64_ADDR24: | |
14849 | case R_PPC64_ADDR16: | |
14850 | case R_PPC64_UADDR16: | |
14851 | case R_PPC64_ADDR16_DS: | |
14852 | case R_PPC64_ADDR16_HIGHER: | |
14853 | case R_PPC64_ADDR16_HIGHEST: | |
14854 | case R_PPC64_ADDR16_HIGHERA: | |
14855 | case R_PPC64_ADDR16_HIGHESTA: | |
14856 | case R_PPC64_ADDR14: | |
14857 | case R_PPC64_ADDR14_BRTAKEN: | |
14858 | case R_PPC64_ADDR14_BRNTAKEN: | |
14859 | case R_PPC64_REL32: | |
14860 | case R_PPC64_REL64: | |
14861 | return TRUE; | |
14862 | ||
14863 | default: | |
14864 | return FALSE; | |
14865 | } | |
14866 | } | |
14867 | ||
5bd4f169 AM |
14868 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14869 | to handle the relocations for a section. | |
14870 | ||
14871 | The relocs are always passed as Rela structures; if the section | |
14872 | actually uses Rel structures, the r_addend field will always be | |
14873 | zero. | |
14874 | ||
14875 | This function is responsible for adjust the section contents as | |
14876 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14877 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14878 | necessary. |
14879 | ||
14880 | This function does not have to worry about setting the reloc | |
14881 | address or the reloc symbol index. | |
14882 | ||
14883 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14884 | ||
14885 | LOCAL_SECTIONS is an array giving the section in the input file | |
14886 | corresponding to the st_shndx field of each local symbol. | |
14887 | ||
14888 | The global hash table entry for the global symbols can be found | |
14889 | via elf_sym_hashes (input_bfd). | |
14890 | ||
1049f94e | 14891 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14892 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14893 | going to be the section symbol corresponding to the output | |
14894 | section, which means that the addend must be adjusted | |
14895 | accordingly. */ | |
14896 | ||
b34976b6 | 14897 | static bfd_boolean |
4ce794b7 AM |
14898 | ppc64_elf_relocate_section (bfd *output_bfd, |
14899 | struct bfd_link_info *info, | |
14900 | bfd *input_bfd, | |
14901 | asection *input_section, | |
14902 | bfd_byte *contents, | |
14903 | Elf_Internal_Rela *relocs, | |
14904 | Elf_Internal_Sym *local_syms, | |
14905 | asection **local_sections) | |
5bd4f169 | 14906 | { |
65f38f15 | 14907 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14908 | Elf_Internal_Shdr *symtab_hdr; |
14909 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14910 | Elf_Internal_Rela *rel; |
c316a17c | 14911 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14912 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14913 | Elf_Internal_Rela outrel; |
14914 | bfd_byte *loc; | |
411e1bfb | 14915 | struct got_entry **local_got_ents; |
5bd4f169 | 14916 | bfd_vma TOCstart; |
b34976b6 AM |
14917 | bfd_boolean ret = TRUE; |
14918 | bfd_boolean is_opd; | |
794e51c0 AM |
14919 | /* Assume 'at' branch hints. */ |
14920 | bfd_boolean is_isa_v2 = TRUE; | |
e59a1001 | 14921 | bfd_boolean warned_dynamic = FALSE; |
95f0d0d2 | 14922 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14923 | |
65f38f15 | 14924 | /* Initialize howto table if needed. */ |
5bd4f169 | 14925 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14926 | ppc_howto_init (); |
14927 | ||
65f38f15 | 14928 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14929 | if (htab == NULL) |
14930 | return FALSE; | |
ee75fd95 AM |
14931 | |
14932 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14933 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14934 | return TRUE; |
14935 | ||
7af5d5c4 AM |
14936 | if (!is_ppc64_elf (input_bfd)) |
14937 | { | |
14938 | bfd_set_error (bfd_error_wrong_format); | |
14939 | return FALSE; | |
14940 | } | |
0ffa91dd | 14941 | |
411e1bfb | 14942 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14943 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14944 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14945 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14946 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14947 | |
c316a17c | 14948 | rel = wrel = relocs; |
5bd4f169 | 14949 | relend = relocs + input_section->reloc_count; |
c316a17c | 14950 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14951 | { |
04c9666a | 14952 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14953 | bfd_vma addend; |
5bd4f169 AM |
14954 | bfd_reloc_status_type r; |
14955 | Elf_Internal_Sym *sym; | |
14956 | asection *sec; | |
039b3fef AM |
14957 | struct elf_link_hash_entry *h_elf; |
14958 | struct ppc_link_hash_entry *h; | |
14959 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14960 | const char *sym_name; |
0d4792f7 | 14961 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14962 | bfd_vma toc_addend; |
f961d9dd AM |
14963 | unsigned char tls_mask, tls_gd, tls_type; |
14964 | unsigned char sym_type; | |
5bd4f169 | 14965 | bfd_vma relocation; |
23cedd1d | 14966 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14967 | bfd_boolean warned; |
bc30df16 | 14968 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14969 | unsigned int insn; |
e11840f9 | 14970 | unsigned int mask; |
721956f4 AM |
14971 | struct ppc_stub_hash_entry *stub_entry; |
14972 | bfd_vma max_br_offset; | |
14973 | bfd_vma from; | |
c316a17c | 14974 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14975 | reloc_howto_type *howto; |
14976 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14977 | uint64_t pinsn; |
14978 | bfd_vma offset; | |
5bd4f169 | 14979 | |
c316a17c AM |
14980 | again: |
14981 | orig_rel = *rel; | |
14982 | ||
4ce794b7 | 14983 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14984 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14985 | |
14986 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14987 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14988 | proper TOC base to use. */ | |
14989 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14990 | && wrel != relocs |
14991 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14992 | && is_opd) |
c316a17c | 14993 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14994 | |
4ce794b7 AM |
14995 | sym = NULL; |
14996 | sec = NULL; | |
039b3fef | 14997 | h_elf = NULL; |
4ce794b7 | 14998 | sym_name = NULL; |
b34976b6 AM |
14999 | unresolved_reloc = FALSE; |
15000 | warned = FALSE; | |
65f38f15 | 15001 | |
0b13192e | 15002 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
15003 | { |
15004 | /* It's a local symbol. */ | |
74f0fb50 | 15005 | struct _opd_sec_data *opd; |
4025353c | 15006 | |
5bd4f169 AM |
15007 | sym = local_syms + r_symndx; |
15008 | sec = local_sections[r_symndx]; | |
26c61ae5 | 15009 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 15010 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 15011 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
15012 | opd = get_opd_info (sec); |
15013 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 15014 | { |
51aecdc5 AM |
15015 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
15016 | + rel->r_addend)]; | |
4025353c AM |
15017 | if (adjust == -1) |
15018 | relocation = 0; | |
15019 | else | |
4cc603a5 AM |
15020 | { |
15021 | /* If this is a relocation against the opd section sym | |
15022 | and we have edited .opd, adjust the reloc addend so | |
15023 | that ld -r and ld --emit-relocs output is correct. | |
15024 | If it is a reloc against some other .opd symbol, | |
15025 | then the symbol value will be adjusted later. */ | |
15026 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
15027 | rel->r_addend += adjust; | |
15028 | else | |
15029 | relocation += adjust; | |
15030 | } | |
1e2f5b6e | 15031 | } |
5bd4f169 AM |
15032 | } |
15033 | else | |
15034 | { | |
62d887d4 L |
15035 | bfd_boolean ignored; |
15036 | ||
b2a8e766 AM |
15037 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
15038 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 15039 | h_elf, sec, relocation, |
62d887d4 | 15040 | unresolved_reloc, warned, ignored); |
039b3fef AM |
15041 | sym_name = h_elf->root.root.string; |
15042 | sym_type = h_elf->type; | |
b69fdb4e AM |
15043 | if (sec != NULL |
15044 | && sec->owner == output_bfd | |
15045 | && strcmp (sec->name, ".opd") == 0) | |
15046 | { | |
15047 | /* This is a symbol defined in a linker script. All | |
15048 | such are defined in output sections, even those | |
15049 | defined by simple assignment from a symbol defined in | |
15050 | an input section. Transfer the symbol to an | |
15051 | appropriate input .opd section, so that a branch to | |
15052 | this symbol will be mapped to the location specified | |
15053 | by the opd entry. */ | |
15054 | struct bfd_link_order *lo; | |
15055 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
15056 | if (lo->type == bfd_indirect_link_order) | |
15057 | { | |
15058 | asection *isec = lo->u.indirect.section; | |
15059 | if (h_elf->root.u.def.value >= isec->output_offset | |
15060 | && h_elf->root.u.def.value < (isec->output_offset | |
15061 | + isec->size)) | |
15062 | { | |
15063 | h_elf->root.u.def.value -= isec->output_offset; | |
15064 | h_elf->root.u.def.section = isec; | |
15065 | sec = isec; | |
15066 | break; | |
15067 | } | |
15068 | } | |
15069 | } | |
5bd4f169 | 15070 | } |
ed7007c1 | 15071 | h = ppc_elf_hash_entry (h_elf); |
5bd4f169 | 15072 | |
dbaa2011 | 15073 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
15074 | { |
15075 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
15076 | input_bfd, input_section, | |
0930cb30 | 15077 | contents, rel->r_offset); |
c316a17c AM |
15078 | wrel->r_offset = rel->r_offset; |
15079 | wrel->r_info = 0; | |
15080 | wrel->r_addend = 0; | |
15081 | ||
15082 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 15083 | symbols defined in discarded sections. Not done for |
c316a17c AM |
15084 | non-debug to preserve relocs in .eh_frame which the |
15085 | eh_frame editing code expects to be present. */ | |
15086 | if (bfd_link_relocatable (info) | |
15087 | && (input_section->flags & SEC_DEBUGGING)) | |
15088 | wrel--; | |
15089 | ||
15090 | continue; | |
15091 | } | |
ab96bf03 | 15092 | |
0e1862bb | 15093 | if (bfd_link_relocatable (info)) |
c316a17c | 15094 | goto copy_reloc; |
ab96bf03 | 15095 | |
f40da81b AM |
15096 | if (h != NULL && &h->elf == htab->elf.hgot) |
15097 | { | |
6f20ed8a | 15098 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
15099 | sec = bfd_abs_section_ptr; |
15100 | unresolved_reloc = FALSE; | |
15101 | } | |
15102 | ||
951fd09b AM |
15103 | /* TLS optimizations. Replace instruction sequences and relocs |
15104 | based on information we collected in tls_optimize. We edit | |
15105 | RELOCS so that --emit-relocs will output something sensible | |
15106 | for the final instruction stream. */ | |
15107 | tls_mask = 0; | |
15108 | tls_gd = 0; | |
0d4792f7 | 15109 | toc_symndx = 0; |
727fc41e AM |
15110 | if (h != NULL) |
15111 | tls_mask = h->tls_mask; | |
15112 | else if (local_got_ents != NULL) | |
411e1bfb | 15113 | { |
e054468f AM |
15114 | struct plt_entry **local_plt = (struct plt_entry **) |
15115 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 15116 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 15117 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
15118 | tls_mask = lgot_masks[r_symndx]; |
15119 | } | |
37da22e5 | 15120 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
15121 | && (r_type == R_PPC64_TLS |
15122 | || r_type == R_PPC64_TLSGD | |
15123 | || r_type == R_PPC64_TLSLD)) | |
15124 | { | |
15125 | /* Check for toc tls entries. */ | |
f961d9dd | 15126 | unsigned char *toc_tls; |
0d4792f7 | 15127 | |
727fc41e AM |
15128 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15129 | &local_syms, rel, input_bfd)) | |
15130 | return FALSE; | |
0d4792f7 | 15131 | |
727fc41e AM |
15132 | if (toc_tls) |
15133 | tls_mask = *toc_tls; | |
0d4792f7 AM |
15134 | } |
15135 | ||
15136 | /* Check that tls relocs are used with tls syms, and non-tls | |
15137 | relocs are used with non-tls syms. */ | |
cf35638d | 15138 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
15139 | && r_type != R_PPC64_NONE |
15140 | && (h == NULL | |
039b3fef AM |
15141 | || h->elf.root.type == bfd_link_hash_defined |
15142 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 15143 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 15144 | { |
37da22e5 | 15145 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
15146 | && (r_type == R_PPC64_TLS |
15147 | || r_type == R_PPC64_TLSGD | |
15148 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
15149 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
15150 | ; | |
15151 | else | |
25f53a85 | 15152 | info->callbacks->einfo |
1d483afe | 15153 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 15154 | /* xgettext:c-format */ |
c1c8c1ef | 15155 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 15156 | /* xgettext:c-format */ |
c1c8c1ef | 15157 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 15158 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
15159 | ppc64_elf_howto_table[r_type]->name, |
15160 | sym_name); | |
411e1bfb AM |
15161 | } |
15162 | ||
15163 | /* Ensure reloc mapping code below stays sane. */ | |
15164 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
15165 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
15166 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
15167 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
15168 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
15169 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
15170 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
15171 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
15172 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
15173 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
15174 | abort (); | |
0d4792f7 | 15175 | |
411e1bfb AM |
15176 | switch (r_type) |
15177 | { | |
15178 | default: | |
411e1bfb AM |
15179 | break; |
15180 | ||
ba761f19 | 15181 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 15182 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
2365f8d7 | 15183 | if ((insn & (0x3fu << 26)) != 58u << 26) |
ba761f19 AM |
15184 | abort (); |
15185 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 15186 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
15187 | r_type = R_PPC64_TOC16_LO; |
15188 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15189 | break; | |
15190 | ||
411e1bfb AM |
15191 | case R_PPC64_TOC16: |
15192 | case R_PPC64_TOC16_LO: | |
15193 | case R_PPC64_TOC16_DS: | |
15194 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
15195 | { |
15196 | /* Check for toc tls entries. */ | |
f961d9dd | 15197 | unsigned char *toc_tls; |
951fd09b | 15198 | int retval; |
411e1bfb | 15199 | |
3a71aa26 AM |
15200 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15201 | &local_syms, rel, input_bfd); | |
951fd09b | 15202 | if (retval == 0) |
411e1bfb AM |
15203 | return FALSE; |
15204 | ||
15205 | if (toc_tls) | |
15206 | { | |
951fd09b | 15207 | tls_mask = *toc_tls; |
411e1bfb AM |
15208 | if (r_type == R_PPC64_TOC16_DS |
15209 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 15210 | { |
37da22e5 | 15211 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
15212 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
15213 | goto toctprel; | |
15214 | } | |
411e1bfb | 15215 | else |
951fd09b AM |
15216 | { |
15217 | /* If we found a GD reloc pair, then we might be | |
15218 | doing a GD->IE transition. */ | |
15219 | if (retval == 2) | |
15220 | { | |
b00a0a86 | 15221 | tls_gd = TLS_GDIE; |
37da22e5 AM |
15222 | if ((tls_mask & TLS_TLS) != 0 |
15223 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 15224 | goto tls_ldgd_opt; |
951fd09b AM |
15225 | } |
15226 | else if (retval == 3) | |
15227 | { | |
37da22e5 AM |
15228 | if ((tls_mask & TLS_TLS) != 0 |
15229 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 15230 | goto tls_ldgd_opt; |
951fd09b AM |
15231 | } |
15232 | } | |
411e1bfb AM |
15233 | } |
15234 | } | |
15235 | break; | |
15236 | ||
9d6ded02 AM |
15237 | case R_PPC64_GOT_TPREL16_HI: |
15238 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 15239 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
15240 | && (tls_mask & TLS_TPREL) == 0) |
15241 | { | |
15242 | rel->r_offset -= d_offset; | |
95f0d0d2 | 15243 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
15244 | r_type = R_PPC64_NONE; |
15245 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15246 | } | |
15247 | break; | |
15248 | ||
411e1bfb AM |
15249 | case R_PPC64_GOT_TPREL16_DS: |
15250 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 15251 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15252 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15253 | { |
81407a69 | 15254 | toctprel: |
95f0d0d2 | 15255 | insn = bfd_get_32 (input_bfd, |
c316a17c | 15256 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
15257 | insn &= 31 << 21; |
15258 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 15259 | bfd_put_32 (input_bfd, insn, |
c316a17c | 15260 | contents + rel->r_offset - d_offset); |
411e1bfb | 15261 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
15262 | if (toc_symndx != 0) |
15263 | { | |
15264 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 15265 | rel->r_addend = toc_addend; |
0d4792f7 AM |
15266 | /* We changed the symbol. Start over in order to |
15267 | get h, sym, sec etc. right. */ | |
c316a17c | 15268 | goto again; |
0d4792f7 AM |
15269 | } |
15270 | else | |
15271 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
15272 | } |
15273 | break; | |
15274 | ||
87c69f97 | 15275 | case R_PPC64_GOT_TPREL_PCREL34: |
c213164a AM |
15276 | if ((tls_mask & TLS_TLS) != 0 |
15277 | && (tls_mask & TLS_TPREL) == 0) | |
15278 | { | |
15279 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
15280 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15281 | pinsn <<= 32; | |
15282 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15283 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
15284 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
15285 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15286 | contents + rel->r_offset); | |
15287 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15288 | contents + rel->r_offset + 4); | |
15289 | r_type = R_PPC64_TPREL34; | |
15290 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15291 | } | |
15292 | break; | |
15293 | ||
411e1bfb | 15294 | case R_PPC64_TLS: |
37da22e5 | 15295 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15296 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15297 | { |
c213164a | 15298 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
15299 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
15300 | if (insn == 0) | |
c213164a AM |
15301 | break; |
15302 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 15303 | { |
c213164a AM |
15304 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15305 | /* Was PPC64_TLS which sits on insn boundary, now | |
15306 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
15307 | rel->r_offset += d_offset; | |
15308 | r_type = R_PPC64_TPREL16_LO; | |
15309 | if (toc_symndx != 0) | |
15310 | { | |
15311 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
15312 | rel->r_addend = toc_addend; | |
15313 | /* We changed the symbol. Start over in order to | |
15314 | get h, sym, sec etc. right. */ | |
15315 | goto again; | |
15316 | } | |
15317 | else | |
15318 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15319 | } | |
15320 | else if ((rel->r_offset & 3) == 1) | |
15321 | { | |
15322 | /* For pcrel IE to LE we already have the full | |
15323 | offset and thus don't need an addi here. A nop | |
15324 | or mr will do. */ | |
2365f8d7 | 15325 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
15326 | { |
15327 | /* Extract regs from addi rt,ra,si. */ | |
15328 | unsigned int rt = (insn >> 21) & 0x1f; | |
15329 | unsigned int ra = (insn >> 16) & 0x1f; | |
15330 | if (rt == ra) | |
15331 | insn = NOP; | |
15332 | else | |
15333 | { | |
15334 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
15335 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
15336 | insn |= (31u << 26) | (444u << 1); | |
15337 | } | |
15338 | } | |
15339 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 15340 | } |
411e1bfb AM |
15341 | } |
15342 | break; | |
15343 | ||
411e1bfb AM |
15344 | case R_PPC64_GOT_TLSGD16_HI: |
15345 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 15346 | tls_gd = TLS_GDIE; |
37da22e5 | 15347 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
15348 | goto tls_gdld_hi; |
15349 | break; | |
15350 | ||
411e1bfb AM |
15351 | case R_PPC64_GOT_TLSLD16_HI: |
15352 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 15353 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 15354 | { |
951fd09b AM |
15355 | tls_gdld_hi: |
15356 | if ((tls_mask & tls_gd) != 0) | |
15357 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
15358 | + R_PPC64_GOT_TPREL16_DS); | |
15359 | else | |
411e1bfb | 15360 | { |
4fe5ca5b | 15361 | rel->r_offset -= d_offset; |
95f0d0d2 | 15362 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 15363 | r_type = R_PPC64_NONE; |
411e1bfb | 15364 | } |
951fd09b | 15365 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
15366 | } |
15367 | break; | |
15368 | ||
951fd09b AM |
15369 | case R_PPC64_GOT_TLSGD16: |
15370 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 15371 | tls_gd = TLS_GDIE; |
37da22e5 | 15372 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 15373 | goto tls_ldgd_opt; |
951fd09b | 15374 | break; |
411e1bfb | 15375 | |
951fd09b AM |
15376 | case R_PPC64_GOT_TLSLD16: |
15377 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 15378 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 15379 | { |
b9f04fe0 | 15380 | unsigned int insn1, insn2; |
102890f0 AM |
15381 | |
15382 | tls_ldgd_opt: | |
727fc41e AM |
15383 | offset = (bfd_vma) -1; |
15384 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
15385 | __tls_get_addr calls, we must trust that the call | |
15386 | stays with its arg setup insns, ie. that the next | |
15387 | reloc is the __tls_get_addr call associated with | |
15388 | the current reloc. Edit both insns. */ | |
9737e8af | 15389 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
15390 | && rel + 1 < relend |
15391 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
9e7028aa AM |
15392 | htab->tls_get_addr_fd, |
15393 | htab->tga_desc_fd, | |
727fc41e | 15394 | htab->tls_get_addr, |
9e7028aa | 15395 | htab->tga_desc)) |
727fc41e | 15396 | offset = rel[1].r_offset; |
b86ac8e3 AM |
15397 | /* We read the low GOT_TLS (or TOC16) insn because we |
15398 | need to keep the destination reg. It may be | |
15399 | something other than the usual r3, and moved to r3 | |
15400 | before the call by intervening code. */ | |
95f0d0d2 | 15401 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 15402 | contents + rel->r_offset - d_offset); |
102890f0 | 15403 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 15404 | { |
102890f0 | 15405 | /* IE */ |
b86ac8e3 | 15406 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 15407 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 15408 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 15409 | if (offset != (bfd_vma) -1) |
f58d5a2d | 15410 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
15411 | if (r_type == R_PPC64_TOC16 |
15412 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 15413 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
15414 | else |
15415 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
15416 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
15417 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
15418 | } | |
15419 | else | |
15420 | { | |
15421 | /* LE */ | |
b86ac8e3 AM |
15422 | insn1 &= 0x1f << 21; |
15423 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
15424 | insn2 = 0x38630000; /* addi 3,3,0 */ |
15425 | if (tls_gd == 0) | |
951fd09b | 15426 | { |
102890f0 | 15427 | /* Was an LD reloc. */ |
71c4e95a | 15428 | r_symndx = STN_UNDEF; |
102890f0 | 15429 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 15430 | } |
102890f0 | 15431 | else if (toc_symndx != 0) |
3a71aa26 AM |
15432 | { |
15433 | r_symndx = toc_symndx; | |
15434 | rel->r_addend = toc_addend; | |
15435 | } | |
102890f0 AM |
15436 | r_type = R_PPC64_TPREL16_HA; |
15437 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
15438 | if (offset != (bfd_vma) -1) |
15439 | { | |
15440 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
15441 | R_PPC64_TPREL16_LO); | |
15442 | rel[1].r_offset = offset + d_offset; | |
15443 | rel[1].r_addend = rel->r_addend; | |
15444 | } | |
102890f0 | 15445 | } |
95f0d0d2 | 15446 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 15447 | contents + rel->r_offset - d_offset); |
727fc41e | 15448 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
15449 | { |
15450 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
15451 | if (offset + 8 <= input_section->size) | |
15452 | { | |
15453 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
15454 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
15455 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
15456 | } | |
15457 | } | |
727fc41e AM |
15458 | if ((tls_mask & tls_gd) == 0 |
15459 | && (tls_gd == 0 || toc_symndx != 0)) | |
15460 | { | |
15461 | /* We changed the symbol. Start over in order | |
15462 | to get h, sym, sec etc. right. */ | |
c316a17c | 15463 | goto again; |
727fc41e AM |
15464 | } |
15465 | } | |
15466 | break; | |
15467 | ||
87c69f97 | 15468 | case R_PPC64_GOT_TLSGD_PCREL34: |
c213164a AM |
15469 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
15470 | { | |
15471 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15472 | pinsn <<= 32; | |
15473 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15474 | if ((tls_mask & TLS_GDIE) != 0) | |
15475 | { | |
15476 | /* IE, pla -> pld */ | |
15477 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
87c69f97 | 15478 | r_type = R_PPC64_GOT_TPREL_PCREL34; |
c213164a AM |
15479 | } |
15480 | else | |
15481 | { | |
15482 | /* LE, pla pcrel -> paddi r13 */ | |
15483 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15484 | r_type = R_PPC64_TPREL34; | |
15485 | } | |
15486 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15487 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15488 | contents + rel->r_offset); | |
15489 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15490 | contents + rel->r_offset + 4); | |
15491 | } | |
15492 | break; | |
15493 | ||
87c69f97 | 15494 | case R_PPC64_GOT_TLSLD_PCREL34: |
c213164a AM |
15495 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
15496 | { | |
15497 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15498 | pinsn <<= 32; | |
15499 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15500 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15501 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15502 | contents + rel->r_offset); | |
15503 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15504 | contents + rel->r_offset + 4); | |
15505 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15506 | r_symndx = STN_UNDEF; | |
15507 | r_type = R_PPC64_TPREL34; | |
15508 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15509 | goto again; | |
15510 | } | |
15511 | break; | |
15512 | ||
727fc41e | 15513 | case R_PPC64_TLSGD: |
37da22e5 | 15514 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 15515 | && rel + 1 < relend) |
727fc41e | 15516 | { |
b9f04fe0 | 15517 | unsigned int insn2; |
5663e321 | 15518 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15519 | |
4a421c53 | 15520 | offset = rel->r_offset; |
5663e321 | 15521 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15522 | { |
15523 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15524 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15525 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15526 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15527 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15528 | break; | |
15529 | } | |
15530 | ||
15531 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15532 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15533 | ||
b00a0a86 | 15534 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
15535 | { |
15536 | /* IE */ | |
15537 | r_type = R_PPC64_NONE; | |
15538 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
15539 | } | |
15540 | else | |
15541 | { | |
15542 | /* LE */ | |
15543 | if (toc_symndx != 0) | |
15544 | { | |
15545 | r_symndx = toc_symndx; | |
15546 | rel->r_addend = toc_addend; | |
15547 | } | |
c213164a AM |
15548 | if (r_type1 == R_PPC64_REL24_NOTOC |
15549 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15550 | { | |
15551 | r_type = R_PPC64_NONE; | |
15552 | insn2 = NOP; | |
15553 | } | |
15554 | else | |
15555 | { | |
15556 | rel->r_offset = offset + d_offset; | |
15557 | r_type = R_PPC64_TPREL16_LO; | |
15558 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15559 | } | |
727fc41e AM |
15560 | } |
15561 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15562 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15563 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15564 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15565 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15566 | if ((tls_mask & TLS_GDIE) == 0 |
15567 | && toc_symndx != 0 | |
15568 | && r_type != R_PPC64_NONE) | |
c316a17c | 15569 | goto again; |
411e1bfb | 15570 | } |
411e1bfb AM |
15571 | break; |
15572 | ||
727fc41e | 15573 | case R_PPC64_TLSLD: |
37da22e5 | 15574 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 15575 | && rel + 1 < relend) |
727fc41e | 15576 | { |
b9f04fe0 | 15577 | unsigned int insn2; |
5663e321 | 15578 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15579 | |
4a421c53 | 15580 | offset = rel->r_offset; |
5663e321 | 15581 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15582 | { |
15583 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15584 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15585 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15586 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15587 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15588 | break; | |
15589 | } | |
15590 | ||
15591 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15592 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15593 | ||
c213164a AM |
15594 | if (r_type1 == R_PPC64_REL24_NOTOC |
15595 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15596 | { | |
15597 | r_type = R_PPC64_NONE; | |
15598 | insn2 = NOP; | |
15599 | } | |
15600 | else | |
15601 | { | |
15602 | rel->r_offset = offset + d_offset; | |
15603 | r_symndx = STN_UNDEF; | |
15604 | r_type = R_PPC64_TPREL16_LO; | |
15605 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15606 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15607 | } | |
727fc41e | 15608 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
15609 | /* Zap the reloc on the _tls_get_addr call too. */ |
15610 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15611 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15612 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15613 | if (r_type != R_PPC64_NONE) |
15614 | goto again; | |
727fc41e AM |
15615 | } |
15616 | break; | |
15617 | ||
411e1bfb | 15618 | case R_PPC64_DTPMOD64: |
951fd09b AM |
15619 | if (rel + 1 < relend |
15620 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
15621 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 15622 | { |
951fd09b AM |
15623 | if ((tls_mask & TLS_GD) == 0) |
15624 | { | |
15625 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 15626 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
15627 | r_type = R_PPC64_TPREL64; |
15628 | else | |
15629 | { | |
4ce794b7 | 15630 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
15631 | r_type = R_PPC64_NONE; |
15632 | } | |
15633 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15634 | } | |
15635 | } | |
15636 | else | |
15637 | { | |
15638 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15639 | { |
4ce794b7 | 15640 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15641 | r_type = R_PPC64_NONE; |
951fd09b | 15642 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15643 | } |
411e1bfb AM |
15644 | } |
15645 | break; | |
15646 | ||
15647 | case R_PPC64_TPREL64: | |
951fd09b | 15648 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15649 | { |
15650 | r_type = R_PPC64_NONE; | |
15651 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15652 | } | |
15653 | break; | |
52a82034 | 15654 | |
006589cf AM |
15655 | case R_PPC64_ENTRY: |
15656 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15657 | if (!bfd_link_pic (info) | |
15658 | && !info->traditional_format | |
15659 | && relocation + 0x80008000 <= 0xffffffff) | |
15660 | { | |
15661 | unsigned int insn1, insn2; | |
15662 | ||
15663 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15664 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15665 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15666 | && insn2 == ADD_R2_R2_R12) | |
15667 | { | |
95f0d0d2 | 15668 | bfd_put_32 (input_bfd, |
006589cf AM |
15669 | LIS_R2 + PPC_HA (relocation), |
15670 | contents + rel->r_offset); | |
95f0d0d2 | 15671 | bfd_put_32 (input_bfd, |
006589cf AM |
15672 | ADDI_R2_R2 + PPC_LO (relocation), |
15673 | contents + rel->r_offset + 4); | |
15674 | } | |
15675 | } | |
15676 | else | |
15677 | { | |
15678 | relocation -= (rel->r_offset | |
15679 | + input_section->output_offset | |
15680 | + input_section->output_section->vma); | |
15681 | if (relocation + 0x80008000 <= 0xffffffff) | |
15682 | { | |
15683 | unsigned int insn1, insn2; | |
15684 | ||
15685 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15686 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15687 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15688 | && insn2 == ADD_R2_R2_R12) | |
15689 | { | |
95f0d0d2 | 15690 | bfd_put_32 (input_bfd, |
006589cf AM |
15691 | ADDIS_R2_R12 + PPC_HA (relocation), |
15692 | contents + rel->r_offset); | |
95f0d0d2 | 15693 | bfd_put_32 (input_bfd, |
006589cf AM |
15694 | ADDI_R2_R2 + PPC_LO (relocation), |
15695 | contents + rel->r_offset + 4); | |
15696 | } | |
15697 | } | |
15698 | } | |
15699 | break; | |
15700 | ||
52a82034 AM |
15701 | case R_PPC64_REL16_HA: |
15702 | /* If we are generating a non-PIC executable, edit | |
15703 | . 0: addis 2,12,.TOC.-0b@ha | |
15704 | . addi 2,2,.TOC.-0b@l | |
15705 | used by ELFv2 global entry points to set up r2, to | |
15706 | . lis 2,.TOC.@ha | |
15707 | . addi 2,2,.TOC.@l | |
15708 | if .TOC. is in range. */ | |
0e1862bb | 15709 | if (!bfd_link_pic (info) |
810d4e75 | 15710 | && !info->traditional_format |
006589cf | 15711 | && !htab->opd_abi |
4f038ee5 | 15712 | && rel->r_addend == d_offset |
52a82034 AM |
15713 | && h != NULL && &h->elf == htab->elf.hgot |
15714 | && rel + 1 < relend | |
15715 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15716 | && rel[1].r_offset == rel->r_offset + 4 | |
15717 | && rel[1].r_addend == rel->r_addend + 4 | |
15718 | && relocation + 0x80008000 <= 0xffffffff) | |
15719 | { | |
15720 | unsigned int insn1, insn2; | |
4a421c53 | 15721 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
15722 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15723 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15724 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15725 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15726 | { |
15727 | r_type = R_PPC64_ADDR16_HA; | |
15728 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15729 | rel->r_addend -= d_offset; | |
15730 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15731 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15732 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15733 | } |
15734 | } | |
15735 | break; | |
411e1bfb AM |
15736 | } |
15737 | ||
15738 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15739 | insn = 0; |
b25116a9 AM |
15740 | max_br_offset = 1 << 25; |
15741 | addend = rel->r_addend; | |
bc30df16 | 15742 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15743 | switch (r_type) |
5bd4f169 AM |
15744 | { |
15745 | default: | |
65f38f15 | 15746 | break; |
5bd4f169 | 15747 | |
3b421ab3 AM |
15748 | case R_PPC64_TOCSAVE: |
15749 | if (relocation + addend == (rel->r_offset | |
15750 | + input_section->output_offset | |
15751 | + input_section->output_section->vma) | |
15752 | && tocsave_find (htab, NO_INSERT, | |
15753 | &local_syms, rel, input_bfd)) | |
15754 | { | |
15755 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15756 | if (insn == NOP | |
15757 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15758 | bfd_put_32 (input_bfd, |
15759 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15760 | contents + rel->r_offset); |
15761 | } | |
15762 | break; | |
15763 | ||
65f38f15 AM |
15764 | /* Branch taken prediction relocations. */ |
15765 | case R_PPC64_ADDR14_BRTAKEN: | |
15766 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15767 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15768 | /* Fall through. */ |
65f38f15 | 15769 | |
86c76c7b | 15770 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15771 | case R_PPC64_ADDR14_BRNTAKEN: |
15772 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15773 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15774 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15775 | /* Fall through. */ |
86c76c7b | 15776 | |
b25116a9 AM |
15777 | case R_PPC64_REL14: |
15778 | max_br_offset = 1 << 15; | |
1a0670f3 | 15779 | /* Fall through. */ |
5bd4f169 | 15780 | |
65f38f15 | 15781 | case R_PPC64_REL24: |
05d0e962 | 15782 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15783 | case R_PPC64_PLTCALL: |
5663e321 | 15784 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
15785 | /* Calls to functions with a different TOC, such as calls to |
15786 | shared objects, need to alter the TOC pointer. This is | |
15787 | done using a linkage stub. A REL24 branching to these | |
15788 | linkage stubs needs to be followed by a nop, as the nop | |
15789 | will be replaced with an instruction to restore the TOC | |
15790 | base pointer. */ | |
8387904d | 15791 | fdh = h; |
b31867b6 AM |
15792 | if (h != NULL |
15793 | && h->oh != NULL | |
15794 | && h->oh->is_func_descriptor) | |
15795 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15796 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15797 | htab); | |
5663e321 AM |
15798 | if ((r_type == R_PPC64_PLTCALL |
15799 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 15800 | && stub_entry != NULL |
05d0e962 AM |
15801 | && stub_entry->stub_type >= ppc_stub_plt_call |
15802 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15803 | stub_entry = NULL; |
15804 | ||
6abec6bc | 15805 | if (stub_entry != NULL |
d0abeec8 AM |
15806 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
15807 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 15808 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15809 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15810 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15811 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15812 | { |
b25116a9 | 15813 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 15814 | |
6e1816be AM |
15815 | if (stub_entry->stub_type == ppc_stub_plt_call |
15816 | && !htab->opd_abi | |
15817 | && htab->params->plt_localentry0 != 0 | |
9e51d549 | 15818 | && h != NULL |
6e1816be AM |
15819 | && is_elfv2_localentry0 (&h->elf)) |
15820 | { | |
15821 | /* The function doesn't use or change r2. */ | |
15822 | can_plt_call = TRUE; | |
15823 | } | |
05d0e962 AM |
15824 | else if (r_type == R_PPC64_REL24_NOTOC) |
15825 | { | |
15826 | /* NOTOC calls don't need to restore r2. */ | |
15827 | can_plt_call = TRUE; | |
15828 | } | |
6e1816be | 15829 | |
f378ab09 | 15830 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15831 | branch and link followed by a nop. The nop is |
15832 | replaced by an insn to restore r2. */ | |
6e1816be | 15833 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15834 | { |
ba8ca3e7 AM |
15835 | unsigned long br; |
15836 | ||
15837 | br = bfd_get_32 (input_bfd, | |
15838 | contents + rel->r_offset); | |
15839 | if ((br & 1) != 0) | |
41bd81ab | 15840 | { |
ba8ca3e7 AM |
15841 | unsigned long nop; |
15842 | ||
15843 | nop = bfd_get_32 (input_bfd, | |
15844 | contents + rel->r_offset + 4); | |
23cedd1d AM |
15845 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
15846 | can_plt_call = TRUE; | |
15847 | else if (nop == NOP | |
15848 | || nop == CROR_151515 | |
15849 | || nop == CROR_313131) | |
a7f2871e | 15850 | { |
ba8ca3e7 | 15851 | if (h != NULL |
ed7007c1 | 15852 | && is_tls_get_addr (&h->elf, htab) |
7c9cf415 | 15853 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15854 | { |
15855 | /* Special stub used, leave nop alone. */ | |
15856 | } | |
15857 | else | |
a078d95a AM |
15858 | bfd_put_32 (input_bfd, |
15859 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
15860 | contents + rel->r_offset + 4); |
15861 | can_plt_call = TRUE; | |
a7f2871e | 15862 | } |
41bd81ab | 15863 | } |
5bd4f169 | 15864 | } |
721956f4 | 15865 | |
ba8ca3e7 | 15866 | if (!can_plt_call && h != NULL) |
721956f4 | 15867 | { |
ba8ca3e7 AM |
15868 | const char *name = h->elf.root.root.string; |
15869 | ||
15870 | if (*name == '.') | |
15871 | ++name; | |
15872 | ||
15873 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
15874 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 15875 | { |
ba8ca3e7 AM |
15876 | /* Allow crt1 branch to go via a toc adjusting |
15877 | stub. Other calls that never return could do | |
15878 | the same, if we could detect such. */ | |
b25116a9 | 15879 | can_plt_call = TRUE; |
6ab189d5 | 15880 | } |
ba8ca3e7 AM |
15881 | } |
15882 | ||
15883 | if (!can_plt_call) | |
15884 | { | |
15885 | /* g++ as of 20130507 emits self-calls without a | |
15886 | following nop. This is arguably wrong since we | |
15887 | have conflicting information. On the one hand a | |
15888 | global symbol and on the other a local call | |
15889 | sequence, but don't error for this special case. | |
15890 | It isn't possible to cheaply verify we have | |
15891 | exactly such a call. Allow all calls to the same | |
15892 | section. */ | |
15893 | asection *code_sec = sec; | |
15894 | ||
15895 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15896 | { |
ba8ca3e7 AM |
15897 | bfd_vma off = (relocation + addend |
15898 | - sec->output_section->vma | |
15899 | - sec->output_offset); | |
bc30df16 | 15900 | |
ba8ca3e7 | 15901 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 15902 | } |
ba8ca3e7 AM |
15903 | if (code_sec == input_section) |
15904 | can_plt_call = TRUE; | |
15905 | } | |
15906 | ||
15907 | if (!can_plt_call) | |
15908 | { | |
05d0e962 AM |
15909 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15910 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15911 | info->callbacks->einfo |
695344c0 | 15912 | /* xgettext:c-format */ |
c1c8c1ef | 15913 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15914 | "(plt call stub)\n"), |
4805fc55 AM |
15915 | input_bfd, input_section, rel->r_offset, sym_name); |
15916 | else | |
15917 | info->callbacks->einfo | |
695344c0 | 15918 | /* xgettext:c-format */ |
c1c8c1ef | 15919 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15920 | "(toc save/adjust stub)\n"), |
4805fc55 | 15921 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15922 | |
15923 | bfd_set_error (bfd_error_bad_value); | |
15924 | ret = FALSE; | |
721956f4 AM |
15925 | } |
15926 | ||
b25116a9 | 15927 | if (can_plt_call |
05d0e962 AM |
15928 | && stub_entry->stub_type >= ppc_stub_plt_call |
15929 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15930 | unresolved_reloc = FALSE; |
15931 | } | |
15932 | ||
6abec6bc AM |
15933 | if ((stub_entry == NULL |
15934 | || stub_entry->stub_type == ppc_stub_long_branch | |
15935 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15936 | && get_opd_info (sec) != NULL) |
15937 | { | |
15938 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15939 | bfd_vma off = (relocation + addend |
15940 | - sec->output_section->vma | |
15941 | - sec->output_offset); | |
aef36ac1 | 15942 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15943 | if (dest != (bfd_vma) -1) |
15944 | { | |
15945 | relocation = dest; | |
15946 | addend = 0; | |
bc30df16 | 15947 | reloc_dest = DEST_OPD; |
8387904d AM |
15948 | } |
15949 | } | |
15950 | ||
b25116a9 AM |
15951 | /* If the branch is out of reach we ought to have a long |
15952 | branch stub. */ | |
15953 | from = (rel->r_offset | |
15954 | + input_section->output_offset | |
15955 | + input_section->output_section->vma); | |
15956 | ||
6911b7dc AM |
15957 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15958 | ? fdh->elf.other | |
15959 | : sym->st_other); | |
15960 | ||
6abec6bc AM |
15961 | if (stub_entry != NULL |
15962 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15963 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15964 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15965 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15966 | || (relocation + addend - from + max_br_offset | |
15967 | < 2 * max_br_offset))) | |
15968 | /* Don't use the stub if this branch is in range. */ | |
15969 | stub_entry = NULL; | |
b25116a9 | 15970 | |
05d0e962 AM |
15971 | if (stub_entry != NULL |
15972 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15973 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15974 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15975 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15976 | && (r_type != R_PPC64_REL24_NOTOC | |
15977 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15978 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15979 | && (relocation + addend - from + max_br_offset |
15980 | < 2 * max_br_offset)) | |
15981 | stub_entry = NULL; | |
15982 | ||
15983 | if (stub_entry != NULL | |
15984 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15985 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15986 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15987 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15988 | && r_type == R_PPC64_REL24_NOTOC | |
15989 | && (relocation + addend - from + max_br_offset | |
15990 | < 2 * max_br_offset)) | |
15991 | stub_entry = NULL; | |
15992 | ||
b25116a9 AM |
15993 | if (stub_entry != NULL) |
15994 | { | |
15995 | /* Munge up the value and addend so that we call the stub | |
15996 | rather than the procedure directly. */ | |
a4b6fadd AM |
15997 | asection *stub_sec = stub_entry->group->stub_sec; |
15998 | ||
15999 | if (stub_entry->stub_type == ppc_stub_save_res) | |
16000 | relocation += (stub_sec->output_offset | |
16001 | + stub_sec->output_section->vma | |
16002 | + stub_sec->size - htab->sfpr->size | |
16003 | - htab->sfpr->output_offset | |
16004 | - htab->sfpr->output_section->vma); | |
16005 | else | |
16006 | relocation = (stub_entry->stub_offset | |
16007 | + stub_sec->output_offset | |
16008 | + stub_sec->output_section->vma); | |
b25116a9 | 16009 | addend = 0; |
bc30df16 | 16010 | reloc_dest = DEST_STUB; |
3b421ab3 | 16011 | |
29433886 AM |
16012 | if ((((stub_entry->stub_type == ppc_stub_plt_call |
16013 | && ALWAYS_EMIT_R2SAVE) | |
16014 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
16015 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
16016 | && rel + 1 < relend | |
16017 | && rel[1].r_offset == rel->r_offset + 4 | |
16018 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
16019 | || ((stub_entry->stub_type == ppc_stub_long_branch_both | |
16020 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
16021 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
16022 | && r_type == R_PPC64_REL24_NOTOC)) | |
16023 | { | |
16024 | /* Skip over the r2 store at the start of the stub. */ | |
16025 | if (!(stub_entry->stub_type >= ppc_stub_plt_call | |
16026 | && htab->params->tls_get_addr_opt | |
16027 | && h != NULL | |
16028 | && is_tls_get_addr (&h->elf, htab))) | |
16029 | relocation += 4; | |
16030 | } | |
5663e321 AM |
16031 | |
16032 | if (r_type == R_PPC64_REL24_NOTOC | |
16033 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
16034 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
16035 | htab->notoc_plt = 1; | |
b25116a9 AM |
16036 | } |
16037 | ||
16038 | if (insn != 0) | |
16039 | { | |
794e51c0 | 16040 | if (is_isa_v2) |
721956f4 | 16041 | { |
b25116a9 AM |
16042 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
16043 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
16044 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
16045 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
16046 | insn |= 0x02 << 21; | |
16047 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
16048 | insn |= 0x08 << 21; | |
16049 | else | |
16050 | break; | |
16051 | } | |
16052 | else | |
16053 | { | |
16054 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 16055 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 16056 | insn ^= 0x01 << 21; |
721956f4 | 16057 | } |
b25116a9 | 16058 | |
95f0d0d2 | 16059 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 16060 | } |
e86ce104 | 16061 | |
06da1e8e AM |
16062 | /* NOP out calls to undefined weak functions. |
16063 | We can thus call a weak function without first | |
16064 | checking whether the function is defined. */ | |
b25116a9 | 16065 | else if (h != NULL |
039b3fef | 16066 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 16067 | && h->elf.dynindx == -1 |
05d0e962 AM |
16068 | && (r_type == R_PPC64_REL24 |
16069 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 16070 | && relocation == 0 |
4cc603a5 | 16071 | && addend == 0) |
e86ce104 | 16072 | { |
95f0d0d2 | 16073 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 16074 | goto copy_reloc; |
e86ce104 | 16075 | } |
65f38f15 | 16076 | break; |
066f4018 AM |
16077 | |
16078 | case R_PPC64_GOT16_DS: | |
6738c8a7 AM |
16079 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16080 | || !htab->do_toc_opt) | |
06507dab | 16081 | break; |
066f4018 AM |
16082 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16083 | if (relocation + addend - from + 0x8000 < 0x10000 | |
9e51d549 | 16084 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
066f4018 AM |
16085 | { |
16086 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 16087 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
16088 | { |
16089 | insn += (14u << 26) - (58u << 26); | |
16090 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16091 | r_type = R_PPC64_TOC16; | |
16092 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16093 | } | |
16094 | } | |
16095 | break; | |
16096 | ||
16097 | case R_PPC64_GOT16_LO_DS: | |
16098 | case R_PPC64_GOT16_HA: | |
6738c8a7 AM |
16099 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16100 | || !htab->do_toc_opt) | |
06507dab | 16101 | break; |
066f4018 AM |
16102 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16103 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
9e51d549 | 16104 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
066f4018 AM |
16105 | { |
16106 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
fba8689a AM |
16107 | if (r_type == R_PPC64_GOT16_LO_DS |
16108 | && (insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) | |
066f4018 AM |
16109 | { |
16110 | insn += (14u << 26) - (58u << 26); | |
16111 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16112 | r_type = R_PPC64_TOC16_LO; | |
16113 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16114 | } | |
fba8689a AM |
16115 | else if (r_type == R_PPC64_GOT16_HA |
16116 | && (insn & (0x3fu << 26)) == 15u << 26 /* addis */) | |
066f4018 AM |
16117 | { |
16118 | r_type = R_PPC64_TOC16_HA; | |
16119 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16120 | } | |
16121 | } | |
16122 | break; | |
4a421c53 AM |
16123 | |
16124 | case R_PPC64_GOT_PCREL34: | |
6738c8a7 AM |
16125 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16126 | || !htab->do_toc_opt) | |
06507dab | 16127 | break; |
4a421c53 AM |
16128 | from = (rel->r_offset |
16129 | + input_section->output_section->vma | |
16130 | + input_section->output_offset); | |
6738c8a7 | 16131 | if (!(relocation - from + (1ULL << 33) < 1ULL << 34 |
9e51d549 | 16132 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) |
6738c8a7 AM |
16133 | break; |
16134 | ||
16135 | offset = rel->r_offset; | |
16136 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16137 | pinsn <<= 32; | |
16138 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16139 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16140 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
16141 | break; | |
16142 | ||
16143 | /* Replace with paddi. */ | |
16144 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
16145 | r_type = R_PPC64_PCREL34; | |
16146 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16147 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
16148 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
16149 | /* Fall through. */ | |
4a421c53 AM |
16150 | |
16151 | case R_PPC64_PCREL34: | |
6738c8a7 AM |
16152 | if (!htab->params->no_pcrel_opt |
16153 | && rel + 1 < relend | |
16154 | && rel[1].r_offset == rel->r_offset | |
16155 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT) | |
9e51d549 | 16156 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
4a421c53 AM |
16157 | { |
16158 | offset = rel->r_offset; | |
16159 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16160 | pinsn <<= 32; | |
16161 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16162 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16163 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
16164 | | (14ULL << 26) /* paddi */)) | |
16165 | { | |
6738c8a7 AM |
16166 | bfd_vma off2 = rel[1].r_addend; |
16167 | if (off2 == 0) | |
16168 | /* zero means next insn. */ | |
16169 | off2 = 8; | |
16170 | off2 += offset; | |
16171 | if (off2 + 4 <= input_section->size) | |
4a421c53 | 16172 | { |
6738c8a7 AM |
16173 | uint64_t pinsn2; |
16174 | bfd_signed_vma addend_off; | |
16175 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); | |
16176 | pinsn2 <<= 32; | |
16177 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
4a421c53 | 16178 | { |
6738c8a7 AM |
16179 | if (off2 + 8 > input_section->size) |
16180 | break; | |
16181 | pinsn2 |= bfd_get_32 (input_bfd, | |
16182 | contents + off2 + 4); | |
16183 | } | |
16184 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) | |
16185 | { | |
16186 | addend += addend_off; | |
16187 | rel->r_addend = addend; | |
16188 | bfd_put_32 (input_bfd, pinsn >> 32, | |
16189 | contents + offset); | |
16190 | bfd_put_32 (input_bfd, pinsn, | |
16191 | contents + offset + 4); | |
16192 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
16193 | contents + off2); | |
4a421c53 | 16194 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
6738c8a7 AM |
16195 | bfd_put_32 (input_bfd, pinsn2, |
16196 | contents + off2 + 4); | |
4a421c53 AM |
16197 | } |
16198 | } | |
16199 | } | |
16200 | } | |
16201 | break; | |
65f38f15 | 16202 | } |
5bd4f169 | 16203 | |
411e1bfb | 16204 | tls_type = 0; |
23cedd1d | 16205 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
16206 | switch (r_type) |
16207 | { | |
16208 | default: | |
cf97bcb0 AM |
16209 | /* xgettext:c-format */ |
16210 | _bfd_error_handler (_("%pB: %s unsupported"), | |
16211 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 16212 | |
65f38f15 | 16213 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16214 | ret = FALSE; |
c316a17c | 16215 | goto copy_reloc; |
5bd4f169 | 16216 | |
65f38f15 | 16217 | case R_PPC64_NONE: |
411e1bfb | 16218 | case R_PPC64_TLS: |
727fc41e AM |
16219 | case R_PPC64_TLSGD: |
16220 | case R_PPC64_TLSLD: | |
3b421ab3 | 16221 | case R_PPC64_TOCSAVE: |
04c9666a AM |
16222 | case R_PPC64_GNU_VTINHERIT: |
16223 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 16224 | case R_PPC64_ENTRY: |
4a421c53 | 16225 | case R_PPC64_PCREL_OPT: |
c316a17c | 16226 | goto copy_reloc; |
5bd4f169 AM |
16227 | |
16228 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
16229 | address in the GOT as relocation value instead of the | |
411e1bfb | 16230 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 16231 | symbol and put the symbol value there. */ |
411e1bfb AM |
16232 | case R_PPC64_GOT_TLSGD16: |
16233 | case R_PPC64_GOT_TLSGD16_LO: | |
16234 | case R_PPC64_GOT_TLSGD16_HI: | |
16235 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 16236 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 16237 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
16238 | goto dogot; |
16239 | ||
16240 | case R_PPC64_GOT_TLSLD16: | |
16241 | case R_PPC64_GOT_TLSLD16_LO: | |
16242 | case R_PPC64_GOT_TLSLD16_HI: | |
16243 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 16244 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 16245 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
16246 | goto dogot; |
16247 | ||
16248 | case R_PPC64_GOT_TPREL16_DS: | |
16249 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16250 | case R_PPC64_GOT_TPREL16_HI: | |
16251 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 16252 | case R_PPC64_GOT_TPREL_PCREL34: |
411e1bfb AM |
16253 | tls_type = TLS_TLS | TLS_TPREL; |
16254 | goto dogot; | |
16255 | ||
16256 | case R_PPC64_GOT_DTPREL16_DS: | |
16257 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16258 | case R_PPC64_GOT_DTPREL16_HI: | |
16259 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 16260 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
16261 | tls_type = TLS_TLS | TLS_DTPREL; |
16262 | goto dogot; | |
16263 | ||
65f38f15 AM |
16264 | case R_PPC64_GOT16: |
16265 | case R_PPC64_GOT16_LO: | |
16266 | case R_PPC64_GOT16_HI: | |
16267 | case R_PPC64_GOT16_HA: | |
16268 | case R_PPC64_GOT16_DS: | |
16269 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 16270 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 16271 | dogot: |
5bd4f169 AM |
16272 | { |
16273 | /* Relocation is to the entry for this symbol in the global | |
16274 | offset table. */ | |
e717da7e | 16275 | asection *got; |
d881513a | 16276 | bfd_vma *offp; |
5bd4f169 | 16277 | bfd_vma off; |
d881513a | 16278 | unsigned long indx = 0; |
927be08e | 16279 | struct got_entry *ent; |
65f38f15 | 16280 | |
d881513a | 16281 | if (tls_type == (TLS_TLS | TLS_LD) |
9e51d549 | 16282 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
927be08e | 16283 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 16284 | else |
5bd4f169 | 16285 | { |
d881513a AM |
16286 | if (h != NULL) |
16287 | { | |
f0158f44 AM |
16288 | if (!htab->elf.dynamic_sections_created |
16289 | || h->elf.dynindx == -1 | |
16290 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 16291 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
16292 | /* This is actually a static link, or it is a |
16293 | -Bsymbolic link and the symbol is defined | |
16294 | locally, or the symbol was forced to be local | |
16295 | because of a version file. */ | |
16296 | ; | |
16297 | else | |
16298 | { | |
039b3fef | 16299 | indx = h->elf.dynindx; |
d881513a AM |
16300 | unresolved_reloc = FALSE; |
16301 | } | |
039b3fef | 16302 | ent = h->elf.got.glist; |
d881513a | 16303 | } |
411e1bfb | 16304 | else |
5bd4f169 | 16305 | { |
d881513a AM |
16306 | if (local_got_ents == NULL) |
16307 | abort (); | |
16308 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 16309 | } |
d881513a AM |
16310 | |
16311 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 16312 | if (ent->addend == orig_rel.r_addend |
e717da7e | 16313 | && ent->owner == input_bfd |
d881513a AM |
16314 | && ent->tls_type == tls_type) |
16315 | break; | |
5bd4f169 | 16316 | } |
411e1bfb | 16317 | |
927be08e AM |
16318 | if (ent == NULL) |
16319 | abort (); | |
16320 | if (ent->is_indirect) | |
16321 | ent = ent->got.ent; | |
16322 | offp = &ent->got.offset; | |
16323 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
16324 | if (got == NULL) |
16325 | abort (); | |
16326 | ||
411e1bfb AM |
16327 | /* The offset must always be a multiple of 8. We use the |
16328 | least significant bit to record whether we have already | |
16329 | processed this entry. */ | |
d881513a | 16330 | off = *offp; |
411e1bfb AM |
16331 | if ((off & 1) != 0) |
16332 | off &= ~1; | |
5bd4f169 AM |
16333 | else |
16334 | { | |
411e1bfb AM |
16335 | /* Generate relocs for the dynamic linker, except in |
16336 | the case of TLSLD where we'll use one entry per | |
16337 | module. */ | |
25f23106 AM |
16338 | asection *relgot; |
16339 | bfd_boolean ifunc; | |
e717da7e | 16340 | |
d881513a | 16341 | *offp = off | 1; |
25f23106 AM |
16342 | relgot = NULL; |
16343 | ifunc = (h != NULL | |
16344 | ? h->elf.type == STT_GNU_IFUNC | |
16345 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 16346 | if (ifunc) |
82e66161 AM |
16347 | { |
16348 | relgot = htab->elf.irelplt; | |
efb2a7b4 | 16349 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16350 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16351 | } |
f0158f44 AM |
16352 | else if (indx != 0 |
16353 | || (bfd_link_pic (info) | |
16354 | && (h == NULL | |
f749f26e AM |
16355 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
16356 | && !(tls_type != 0 | |
f15d0b54 | 16357 | && bfd_link_executable (info) |
9e51d549 AM |
16358 | && (h == NULL |
16359 | || SYMBOL_REFERENCES_LOCAL (info, | |
16360 | &h->elf))))) | |
19e08130 | 16361 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 16362 | if (relgot != NULL) |
5bd4f169 | 16363 | { |
e717da7e AM |
16364 | outrel.r_offset = (got->output_section->vma |
16365 | + got->output_offset | |
411e1bfb | 16366 | + off); |
133a1f60 | 16367 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 16368 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 16369 | { |
411e1bfb | 16370 | outrel.r_addend = 0; |
e515b051 | 16371 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
16372 | if (tls_type == (TLS_TLS | TLS_GD)) |
16373 | { | |
e717da7e AM |
16374 | loc = relgot->contents; |
16375 | loc += (relgot->reloc_count++ | |
d881513a AM |
16376 | * sizeof (Elf64_External_Rela)); |
16377 | bfd_elf64_swap_reloca_out (output_bfd, | |
16378 | &outrel, loc); | |
e515b051 | 16379 | outrel.r_offset += 8; |
133a1f60 | 16380 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
16381 | outrel.r_info |
16382 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 16383 | } |
411e1bfb | 16384 | } |
951fd09b | 16385 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 16386 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 16387 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 16388 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
16389 | else if (indx != 0) |
16390 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
16391 | else | |
81407a69 | 16392 | { |
25f23106 AM |
16393 | if (ifunc) |
16394 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16395 | else | |
16396 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
16397 | |
16398 | /* Write the .got section contents for the sake | |
16399 | of prelink. */ | |
e717da7e | 16400 | loc = got->contents + off; |
23fbd6fa JJ |
16401 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
16402 | loc); | |
81407a69 | 16403 | } |
81407a69 AM |
16404 | |
16405 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
16406 | { |
16407 | outrel.r_addend += relocation; | |
16408 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
16409 | { |
16410 | if (htab->elf.tls_sec == NULL) | |
16411 | outrel.r_addend = 0; | |
16412 | else | |
16413 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
16414 | } | |
e515b051 | 16415 | } |
e717da7e AM |
16416 | loc = relgot->contents; |
16417 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
16418 | * sizeof (Elf64_External_Rela)); |
16419 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
16420 | } | |
16421 | ||
ad8e1ba5 | 16422 | /* Init the .got section contents here if we're not |
81407a69 | 16423 | emitting a reloc. */ |
d881513a | 16424 | else |
411e1bfb | 16425 | { |
133a1f60 | 16426 | relocation += orig_rel.r_addend; |
f0158f44 | 16427 | if (tls_type != 0) |
411e1bfb | 16428 | { |
989f9879 AM |
16429 | if (htab->elf.tls_sec == NULL) |
16430 | relocation = 0; | |
16431 | else | |
16432 | { | |
f0158f44 AM |
16433 | if (tls_type & TLS_LD) |
16434 | relocation = 0; | |
16435 | else | |
16436 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 16437 | if (tls_type & TLS_TPREL) |
989f9879 AM |
16438 | relocation += DTP_OFFSET - TP_OFFSET; |
16439 | } | |
5bd4f169 | 16440 | |
f0158f44 | 16441 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
16442 | { |
16443 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16444 | got->contents + off + 8); |
676ee2b5 | 16445 | relocation = 1; |
7b609f53 | 16446 | } |
411e1bfb AM |
16447 | } |
16448 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16449 | got->contents + off); |
5bd4f169 AM |
16450 | } |
16451 | } | |
16452 | ||
65f38f15 AM |
16453 | if (off >= (bfd_vma) -2) |
16454 | abort (); | |
16455 | ||
bf102f86 | 16456 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 16457 | addend = 0; |
c213164a | 16458 | if (!(r_type == R_PPC64_GOT_PCREL34 |
87c69f97 AM |
16459 | || r_type == R_PPC64_GOT_TLSGD_PCREL34 |
16460 | || r_type == R_PPC64_GOT_TLSLD_PCREL34 | |
16461 | || r_type == R_PPC64_GOT_TPREL_PCREL34 | |
16462 | || r_type == R_PPC64_GOT_DTPREL_PCREL34)) | |
5663e321 | 16463 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 16464 | } |
65f38f15 AM |
16465 | break; |
16466 | ||
16467 | case R_PPC64_PLT16_HA: | |
16468 | case R_PPC64_PLT16_HI: | |
16469 | case R_PPC64_PLT16_LO: | |
08be3224 | 16470 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
16471 | case R_PPC64_PLT_PCREL34: |
16472 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
16473 | case R_PPC64_PLT32: |
16474 | case R_PPC64_PLT64: | |
23cedd1d | 16475 | case R_PPC64_PLTSEQ: |
5663e321 | 16476 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 16477 | case R_PPC64_PLTCALL: |
5663e321 | 16478 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
16479 | /* Relocation is to the entry for this symbol in the |
16480 | procedure linkage table. */ | |
23cedd1d | 16481 | unresolved_reloc = TRUE; |
cbf95972 AM |
16482 | { |
16483 | struct plt_entry **plt_list = NULL; | |
16484 | if (h != NULL) | |
16485 | plt_list = &h->elf.plt.plist; | |
16486 | else if (local_got_ents != NULL) | |
16487 | { | |
16488 | struct plt_entry **local_plt = (struct plt_entry **) | |
16489 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 16490 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
16491 | } |
16492 | if (plt_list) | |
16493 | { | |
16494 | struct plt_entry *ent; | |
65f38f15 | 16495 | |
cbf95972 AM |
16496 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
16497 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 16498 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
16499 | { |
16500 | asection *plt; | |
08be3224 | 16501 | bfd_vma got; |
cbf95972 AM |
16502 | |
16503 | plt = htab->elf.splt; | |
30845f11 | 16504 | if (use_local_plt (info, elf_hash_entry (h))) |
2d7ad24e AM |
16505 | { |
16506 | if (h != NULL | |
16507 | ? h->elf.type == STT_GNU_IFUNC | |
16508 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16509 | plt = htab->elf.iplt; | |
16510 | else | |
16511 | plt = htab->pltlocal; | |
16512 | } | |
16513 | relocation = (plt->output_section->vma | |
16514 | + plt->output_offset | |
16515 | + ent->plt.offset); | |
08be3224 | 16516 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
16517 | || r_type == R_PPC64_PLT16_HI |
16518 | || r_type == R_PPC64_PLT16_LO | |
16519 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
16520 | { |
16521 | got = (elf_gp (output_bfd) | |
16522 | + htab->sec_info[input_section->id].toc_off); | |
16523 | relocation -= got; | |
16524 | } | |
133a1f60 | 16525 | addend = 0; |
cbf95972 AM |
16526 | unresolved_reloc = FALSE; |
16527 | break; | |
16528 | } | |
16529 | } | |
16530 | } | |
65f38f15 | 16531 | break; |
5bd4f169 | 16532 | |
0b13192e AM |
16533 | case R_PPC64_TOC: |
16534 | /* Relocation value is TOC base. */ | |
16535 | relocation = TOCstart; | |
cf35638d | 16536 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 16537 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
16538 | else if (unresolved_reloc) |
16539 | ; | |
6f20ed8a AM |
16540 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
16541 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
16542 | else |
16543 | unresolved_reloc = TRUE; | |
ab96bf03 | 16544 | goto dodyn; |
0b13192e | 16545 | |
5bd4f169 AM |
16546 | /* TOC16 relocs. We want the offset relative to the TOC base, |
16547 | which is the address of the start of the TOC plus 0x8000. | |
16548 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
16549 | in this order. */ | |
65f38f15 AM |
16550 | case R_PPC64_TOC16: |
16551 | case R_PPC64_TOC16_LO: | |
16552 | case R_PPC64_TOC16_HI: | |
16553 | case R_PPC64_TOC16_DS: | |
16554 | case R_PPC64_TOC16_LO_DS: | |
16555 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 16556 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
16557 | if (h != NULL) |
16558 | goto dodyn; | |
5bd4f169 AM |
16559 | break; |
16560 | ||
16561 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
16562 | case R_PPC64_SECTOFF: |
16563 | case R_PPC64_SECTOFF_LO: | |
16564 | case R_PPC64_SECTOFF_HI: | |
16565 | case R_PPC64_SECTOFF_DS: | |
16566 | case R_PPC64_SECTOFF_LO_DS: | |
16567 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 16568 | if (sec != NULL) |
65f38f15 | 16569 | addend -= sec->output_section->vma; |
5bd4f169 AM |
16570 | break; |
16571 | ||
25f23106 AM |
16572 | case R_PPC64_REL16: |
16573 | case R_PPC64_REL16_LO: | |
16574 | case R_PPC64_REL16_HI: | |
16575 | case R_PPC64_REL16_HA: | |
4a969973 AM |
16576 | case R_PPC64_REL16_HIGH: |
16577 | case R_PPC64_REL16_HIGHA: | |
16578 | case R_PPC64_REL16_HIGHER: | |
16579 | case R_PPC64_REL16_HIGHERA: | |
16580 | case R_PPC64_REL16_HIGHEST: | |
16581 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
16582 | case R_PPC64_REL16_HIGHER34: |
16583 | case R_PPC64_REL16_HIGHERA34: | |
16584 | case R_PPC64_REL16_HIGHEST34: | |
16585 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 16586 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
16587 | case R_PPC64_REL14: |
16588 | case R_PPC64_REL14_BRNTAKEN: | |
16589 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 16590 | case R_PPC64_REL24: |
05d0e962 | 16591 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
16592 | case R_PPC64_PCREL34: |
16593 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
16594 | break; |
16595 | ||
411e1bfb AM |
16596 | case R_PPC64_TPREL16: |
16597 | case R_PPC64_TPREL16_LO: | |
16598 | case R_PPC64_TPREL16_HI: | |
16599 | case R_PPC64_TPREL16_HA: | |
16600 | case R_PPC64_TPREL16_DS: | |
16601 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
16602 | case R_PPC64_TPREL16_HIGH: |
16603 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
16604 | case R_PPC64_TPREL16_HIGHER: |
16605 | case R_PPC64_TPREL16_HIGHERA: | |
16606 | case R_PPC64_TPREL16_HIGHEST: | |
16607 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 16608 | case R_PPC64_TPREL34: |
766bc656 AM |
16609 | if (h != NULL |
16610 | && h->elf.root.type == bfd_link_hash_undefweak | |
16611 | && h->elf.dynindx == -1) | |
16612 | { | |
16613 | /* Make this relocation against an undefined weak symbol | |
16614 | resolve to zero. This is really just a tweak, since | |
16615 | code using weak externs ought to check that they are | |
16616 | defined before using them. */ | |
16617 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
16618 | ||
95f0d0d2 | 16619 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
16620 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
16621 | if (insn != 0) | |
95f0d0d2 | 16622 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
16623 | break; |
16624 | } | |
989f9879 AM |
16625 | if (htab->elf.tls_sec != NULL) |
16626 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
16627 | /* The TPREL16 relocs shouldn't really be used in shared |
16628 | libs or with non-local symbols as that will result in | |
16629 | DT_TEXTREL being set, but support them anyway. */ | |
16630 | goto dodyn; | |
411e1bfb AM |
16631 | |
16632 | case R_PPC64_DTPREL16: | |
16633 | case R_PPC64_DTPREL16_LO: | |
16634 | case R_PPC64_DTPREL16_HI: | |
16635 | case R_PPC64_DTPREL16_HA: | |
16636 | case R_PPC64_DTPREL16_DS: | |
16637 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
16638 | case R_PPC64_DTPREL16_HIGH: |
16639 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
16640 | case R_PPC64_DTPREL16_HIGHER: |
16641 | case R_PPC64_DTPREL16_HIGHERA: | |
16642 | case R_PPC64_DTPREL16_HIGHEST: | |
16643 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 16644 | case R_PPC64_DTPREL34: |
989f9879 AM |
16645 | if (htab->elf.tls_sec != NULL) |
16646 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
16647 | break; |
16648 | ||
45965137 AM |
16649 | case R_PPC64_ADDR64_LOCAL: |
16650 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
16651 | ? h->elf.other | |
16652 | : sym->st_other); | |
16653 | break; | |
16654 | ||
e515b051 AM |
16655 | case R_PPC64_DTPMOD64: |
16656 | relocation = 1; | |
16657 | addend = 0; | |
16658 | goto dodyn; | |
16659 | ||
411e1bfb | 16660 | case R_PPC64_TPREL64: |
989f9879 AM |
16661 | if (htab->elf.tls_sec != NULL) |
16662 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
16663 | goto dodyn; |
16664 | ||
16665 | case R_PPC64_DTPREL64: | |
989f9879 AM |
16666 | if (htab->elf.tls_sec != NULL) |
16667 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 16668 | /* Fall through. */ |
411e1bfb | 16669 | |
65f38f15 AM |
16670 | /* Relocations that may need to be propagated if this is a |
16671 | dynamic object. */ | |
04c9666a | 16672 | case R_PPC64_REL30: |
65f38f15 AM |
16673 | case R_PPC64_REL32: |
16674 | case R_PPC64_REL64: | |
16675 | case R_PPC64_ADDR14: | |
16676 | case R_PPC64_ADDR14_BRNTAKEN: | |
16677 | case R_PPC64_ADDR14_BRTAKEN: | |
16678 | case R_PPC64_ADDR16: | |
16679 | case R_PPC64_ADDR16_DS: | |
16680 | case R_PPC64_ADDR16_HA: | |
16681 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16682 | case R_PPC64_ADDR16_HIGH: |
16683 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16684 | case R_PPC64_ADDR16_HIGHER: |
16685 | case R_PPC64_ADDR16_HIGHERA: | |
16686 | case R_PPC64_ADDR16_HIGHEST: | |
16687 | case R_PPC64_ADDR16_HIGHESTA: | |
16688 | case R_PPC64_ADDR16_LO: | |
16689 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
16690 | case R_PPC64_ADDR16_HIGHER34: |
16691 | case R_PPC64_ADDR16_HIGHERA34: | |
16692 | case R_PPC64_ADDR16_HIGHEST34: | |
16693 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 16694 | case R_PPC64_ADDR24: |
65f38f15 AM |
16695 | case R_PPC64_ADDR32: |
16696 | case R_PPC64_ADDR64: | |
16697 | case R_PPC64_UADDR16: | |
16698 | case R_PPC64_UADDR32: | |
16699 | case R_PPC64_UADDR64: | |
5663e321 AM |
16700 | case R_PPC64_D34: |
16701 | case R_PPC64_D34_LO: | |
16702 | case R_PPC64_D34_HI30: | |
16703 | case R_PPC64_D34_HA30: | |
16704 | case R_PPC64_D28: | |
411e1bfb | 16705 | dodyn: |
5d1634d7 | 16706 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16707 | break; |
16708 | ||
41bd81ab AM |
16709 | if (NO_OPD_RELOCS && is_opd) |
16710 | break; | |
16711 | ||
8a9e8e72 | 16712 | if (bfd_link_pic (info) |
b1b07054 | 16713 | ? ((h == NULL |
190eb1dd | 16714 | || h->elf.dyn_relocs != NULL) |
b1b07054 AM |
16715 | && ((h != NULL && pc_dynrelocs (h)) |
16716 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 | 16717 | : (h != NULL |
190eb1dd | 16718 | ? h->elf.dyn_relocs != NULL |
d311bc8b | 16719 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16720 | { |
b34976b6 | 16721 | bfd_boolean skip, relocate; |
65f38f15 | 16722 | asection *sreloc; |
1cf1f670 | 16723 | bfd_vma out_off; |
82e66161 | 16724 | long indx = 0; |
65f38f15 AM |
16725 | |
16726 | /* When generating a dynamic object, these relocations | |
16727 | are copied into the output file to be resolved at run | |
16728 | time. */ | |
16729 | ||
b34976b6 AM |
16730 | skip = FALSE; |
16731 | relocate = FALSE; | |
65f38f15 | 16732 | |
1cf1f670 AM |
16733 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16734 | input_section, rel->r_offset); | |
16735 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 16736 | skip = TRUE; |
1cf1f670 | 16737 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 16738 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
16739 | out_off += (input_section->output_section->vma |
16740 | + input_section->output_offset); | |
16741 | outrel.r_offset = out_off; | |
411e1bfb | 16742 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16743 | |
1cf1f670 AM |
16744 | /* Optimize unaligned reloc use. */ |
16745 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16746 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16747 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16748 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16749 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16750 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16751 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16752 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16753 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16754 | ||
65f38f15 | 16755 | if (skip) |
0bb2d96a | 16756 | memset (&outrel, 0, sizeof outrel); |
9e51d549 AM |
16757 | else if (h != NULL |
16758 | && !SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
0b13192e AM |
16759 | && !is_opd |
16760 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16761 | { |
82e66161 AM |
16762 | indx = h->elf.dynindx; |
16763 | BFD_ASSERT (indx != -1); | |
16764 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16765 | } |
65f38f15 AM |
16766 | else |
16767 | { | |
41bd81ab AM |
16768 | /* This symbol is local, or marked to become local, |
16769 | or this is an opd section reloc which must point | |
16770 | at a local function. */ | |
65f38f15 | 16771 | outrel.r_addend += relocation; |
e86ce104 | 16772 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16773 | { |
3fad3c7c | 16774 | if (is_opd && h != NULL) |
afbe61cf AM |
16775 | { |
16776 | /* Lie about opd entries. This case occurs | |
16777 | when building shared libraries and we | |
16778 | reference a function in another shared | |
3fad3c7c AM |
16779 | lib. The same thing happens for a weak |
16780 | definition in an application that's | |
16781 | overridden by a strong definition in a | |
16782 | shared lib. (I believe this is a generic | |
16783 | bug in binutils handling of weak syms.) | |
16784 | In these cases we won't use the opd | |
1e2f5b6e | 16785 | entry in this lib. */ |
b34976b6 | 16786 | unresolved_reloc = FALSE; |
afbe61cf | 16787 | } |
25f23106 AM |
16788 | if (!is_opd |
16789 | && r_type == R_PPC64_ADDR64 | |
16790 | && (h != NULL | |
16791 | ? h->elf.type == STT_GNU_IFUNC | |
16792 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16793 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16794 | else | |
16795 | { | |
16796 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16797 | |
25f23106 AM |
16798 | /* We need to relocate .opd contents for ld.so. |
16799 | Prelink also wants simple and consistent rules | |
16800 | for relocs. This make all RELATIVE relocs have | |
16801 | *r_offset equal to r_addend. */ | |
16802 | relocate = TRUE; | |
16803 | } | |
65f38f15 AM |
16804 | } |
16805 | else | |
16806 | { | |
25f23106 AM |
16807 | if (h != NULL |
16808 | ? h->elf.type == STT_GNU_IFUNC | |
16809 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16810 | { | |
25f53a85 | 16811 | info->callbacks->einfo |
695344c0 | 16812 | /* xgettext:c-format */ |
174d0a74 | 16813 | (_("%H: %s for indirect " |
c1c8c1ef | 16814 | "function `%pT' unsupported\n"), |
25f53a85 | 16815 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16816 | ppc64_elf_howto_table[r_type]->name, |
16817 | sym_name); | |
16818 | ret = FALSE; | |
16819 | } | |
cf35638d | 16820 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16821 | ; |
16822 | else if (sec == NULL || sec->owner == NULL) | |
16823 | { | |
16824 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 16825 | return FALSE; |
65f38f15 AM |
16826 | } |
16827 | else | |
16828 | { | |
f26a3287 | 16829 | asection *osec = sec->output_section; |
65f38f15 | 16830 | |
f26a3287 AM |
16831 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
16832 | { | |
16833 | /* TLS symbol values are relative to the | |
16834 | TLS segment. Dynamic relocations for | |
16835 | local TLS symbols therefore can't be | |
16836 | reduced to a relocation against their | |
16837 | section symbol because it holds the | |
16838 | address of the section, not a value | |
16839 | relative to the TLS segment. We could | |
16840 | change the .tdata dynamic section symbol | |
16841 | to be zero value but STN_UNDEF works | |
16842 | and is used elsewhere, eg. for TPREL64 | |
16843 | GOT relocs against local TLS symbols. */ | |
16844 | osec = htab->elf.tls_sec; | |
16845 | indx = 0; | |
16846 | } | |
16847 | else | |
74541ad4 | 16848 | { |
74541ad4 | 16849 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
16850 | if (indx == 0) |
16851 | { | |
16852 | if ((osec->flags & SEC_READONLY) == 0 | |
16853 | && htab->elf.data_index_section != NULL) | |
16854 | osec = htab->elf.data_index_section; | |
16855 | else | |
16856 | osec = htab->elf.text_index_section; | |
16857 | indx = elf_section_data (osec)->dynindx; | |
16858 | } | |
16859 | BFD_ASSERT (indx != 0); | |
74541ad4 | 16860 | } |
74541ad4 | 16861 | |
65f38f15 AM |
16862 | /* We are turning this relocation into one |
16863 | against a section symbol, so subtract out | |
16864 | the output section's address but not the | |
16865 | offset of the input section in the output | |
16866 | section. */ | |
16867 | outrel.r_addend -= osec->vma; | |
16868 | } | |
16869 | ||
16870 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16871 | } | |
16872 | } | |
16873 | ||
16874 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16875 | if (h != NULL |
16876 | ? h->elf.type == STT_GNU_IFUNC | |
16877 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16878 | { |
16879 | sreloc = htab->elf.irelplt; | |
efb2a7b4 | 16880 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16881 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16882 | } |
65f38f15 AM |
16883 | if (sreloc == NULL) |
16884 | abort (); | |
16885 | ||
dfbb6ac9 AM |
16886 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16887 | >= sreloc->size) | |
16888 | abort (); | |
947216bf AM |
16889 | loc = sreloc->contents; |
16890 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16891 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16892 | ||
e59a1001 AM |
16893 | if (!warned_dynamic |
16894 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
16895 | { | |
16896 | info->callbacks->einfo | |
16897 | /* xgettext:c-format */ | |
16898 | (_("%X%P: %pB: %s against %pT " | |
16899 | "is not supported by glibc as a dynamic relocation\n"), | |
16900 | input_bfd, | |
16901 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
16902 | sym_name); | |
16903 | warned_dynamic = TRUE; | |
16904 | } | |
16905 | ||
65f38f15 AM |
16906 | /* If this reloc is against an external symbol, it will |
16907 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16908 | anything now. However, for the sake of prelink ensure |
16909 | that the section contents are a known value. */ | |
2cdcc330 | 16910 | if (!relocate) |
81407a69 AM |
16911 | { |
16912 | unresolved_reloc = FALSE; | |
16913 | /* The value chosen here is quite arbitrary as ld.so | |
16914 | ignores section contents except for the special | |
16915 | case of .opd where the contents might be accessed | |
16916 | before relocation. Choose zero, as that won't | |
16917 | cause reloc overflow. */ | |
16918 | relocation = 0; | |
16919 | addend = 0; | |
16920 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16921 | to improve backward compatibility with older | |
16922 | versions of ld. */ | |
16923 | if (r_type == R_PPC64_ADDR64) | |
16924 | addend = outrel.r_addend; | |
16925 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16926 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16927 | addend = outrel.r_offset; |
81407a69 | 16928 | } |
65f38f15 | 16929 | } |
5bd4f169 AM |
16930 | break; |
16931 | ||
65f38f15 AM |
16932 | case R_PPC64_COPY: |
16933 | case R_PPC64_GLOB_DAT: | |
16934 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16935 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16936 | case R_PPC64_RELATIVE: |
16937 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16938 | files. */ | |
ae9a127f | 16939 | /* Fall through. */ |
65f38f15 AM |
16940 | |
16941 | case R_PPC64_PLTGOT16: | |
16942 | case R_PPC64_PLTGOT16_DS: | |
16943 | case R_PPC64_PLTGOT16_HA: | |
16944 | case R_PPC64_PLTGOT16_HI: | |
16945 | case R_PPC64_PLTGOT16_LO: | |
16946 | case R_PPC64_PLTGOT16_LO_DS: | |
16947 | case R_PPC64_PLTREL32: | |
16948 | case R_PPC64_PLTREL64: | |
16949 | /* These ones haven't been implemented yet. */ | |
16950 | ||
25f53a85 | 16951 | info->callbacks->einfo |
695344c0 | 16952 | /* xgettext:c-format */ |
c1c8c1ef | 16953 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16954 | input_bfd, |
4ce794b7 | 16955 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16956 | |
16957 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 16958 | ret = FALSE; |
c316a17c | 16959 | goto copy_reloc; |
65f38f15 | 16960 | } |
5bd4f169 | 16961 | |
67f0cbdb AM |
16962 | /* Multi-instruction sequences that access the TOC can be |
16963 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16964 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16965 | switch (r_type) |
16966 | { | |
16967 | default: | |
16968 | break; | |
16969 | ||
16970 | case R_PPC64_GOT_TLSLD16_HI: | |
16971 | case R_PPC64_GOT_TLSGD16_HI: | |
16972 | case R_PPC64_GOT_TPREL16_HI: | |
16973 | case R_PPC64_GOT_DTPREL16_HI: | |
16974 | case R_PPC64_GOT16_HI: | |
16975 | case R_PPC64_TOC16_HI: | |
16976 | /* These relocs would only be useful if building up an | |
16977 | offset to later add to r2, perhaps in an indexed | |
16978 | addressing mode instruction. Don't try to optimize. | |
16979 | Unfortunately, the possibility of someone building up an | |
16980 | offset like this or even with the HA relocs, means that | |
16981 | we need to check the high insn when optimizing the low | |
16982 | insn. */ | |
16983 | break; | |
16984 | ||
5663e321 AM |
16985 | case R_PPC64_PLTCALL_NOTOC: |
16986 | if (!unresolved_reloc) | |
16987 | htab->notoc_plt = 1; | |
16988 | /* Fall through. */ | |
23cedd1d AM |
16989 | case R_PPC64_PLTCALL: |
16990 | if (unresolved_reloc) | |
16991 | { | |
16992 | /* No plt entry. Make this into a direct call. */ | |
16993 | bfd_byte *p = contents + rel->r_offset; | |
16994 | insn = bfd_get_32 (input_bfd, p); | |
16995 | insn &= 1; | |
16996 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
16997 | if (r_type == R_PPC64_PLTCALL) |
16998 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
16999 | unresolved_reloc = save_unresolved_reloc; |
17000 | r_type = R_PPC64_REL24; | |
17001 | } | |
17002 | break; | |
17003 | ||
5663e321 | 17004 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
17005 | case R_PPC64_PLTSEQ: |
17006 | if (unresolved_reloc) | |
17007 | { | |
17008 | unresolved_reloc = FALSE; | |
17009 | goto nop_it; | |
17010 | } | |
17011 | break; | |
17012 | ||
5663e321 AM |
17013 | case R_PPC64_PLT_PCREL34_NOTOC: |
17014 | if (!unresolved_reloc) | |
17015 | htab->notoc_plt = 1; | |
17016 | /* Fall through. */ | |
17017 | case R_PPC64_PLT_PCREL34: | |
17018 | if (unresolved_reloc) | |
17019 | { | |
17020 | bfd_byte *p = contents + rel->r_offset; | |
17021 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
17022 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
17023 | unresolved_reloc = FALSE; | |
17024 | goto copy_reloc; | |
17025 | } | |
17026 | break; | |
17027 | ||
23cedd1d AM |
17028 | case R_PPC64_PLT16_HA: |
17029 | if (unresolved_reloc) | |
17030 | { | |
17031 | unresolved_reloc = FALSE; | |
17032 | goto nop_it; | |
17033 | } | |
17034 | /* Fall through. */ | |
67f0cbdb AM |
17035 | case R_PPC64_GOT_TLSLD16_HA: |
17036 | case R_PPC64_GOT_TLSGD16_HA: | |
17037 | case R_PPC64_GOT_TPREL16_HA: | |
17038 | case R_PPC64_GOT_DTPREL16_HA: | |
17039 | case R_PPC64_GOT16_HA: | |
17040 | case R_PPC64_TOC16_HA: | |
98528052 | 17041 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 17042 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 17043 | { |
23cedd1d AM |
17044 | bfd_byte *p; |
17045 | nop_it: | |
17046 | p = contents + (rel->r_offset & ~3); | |
98528052 | 17047 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 17048 | goto copy_reloc; |
98528052 | 17049 | } |
67f0cbdb AM |
17050 | break; |
17051 | ||
23cedd1d AM |
17052 | case R_PPC64_PLT16_LO: |
17053 | case R_PPC64_PLT16_LO_DS: | |
17054 | if (unresolved_reloc) | |
17055 | { | |
17056 | unresolved_reloc = FALSE; | |
17057 | goto nop_it; | |
17058 | } | |
17059 | /* Fall through. */ | |
67f0cbdb AM |
17060 | case R_PPC64_GOT_TLSLD16_LO: |
17061 | case R_PPC64_GOT_TLSGD16_LO: | |
17062 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17063 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17064 | case R_PPC64_GOT16_LO: | |
17065 | case R_PPC64_GOT16_LO_DS: | |
17066 | case R_PPC64_TOC16_LO: | |
17067 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 17068 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 17069 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
17070 | { |
17071 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17072 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 17073 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
17074 | { |
17075 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 17076 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
17077 | insn |= (14u << 26) | (2 << 16); |
17078 | } | |
17079 | else | |
67f0cbdb | 17080 | { |
98528052 AM |
17081 | insn &= ~(0x1f << 16); |
17082 | insn |= 2 << 16; | |
67f0cbdb | 17083 | } |
560c8763 | 17084 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
17085 | } |
17086 | break; | |
9a23f96e AM |
17087 | |
17088 | case R_PPC64_TPREL16_HA: | |
17089 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
17090 | { | |
17091 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
252dcdf4 AM |
17092 | bfd_put_32 (input_bfd, NOP, p); |
17093 | goto copy_reloc; | |
9a23f96e AM |
17094 | } |
17095 | break; | |
17096 | ||
17097 | case R_PPC64_TPREL16_LO: | |
17098 | case R_PPC64_TPREL16_LO_DS: | |
17099 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
17100 | { | |
17101 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17102 | insn = bfd_get_32 (input_bfd, p); | |
17103 | insn &= ~(0x1f << 16); | |
17104 | insn |= 13 << 16; | |
17105 | bfd_put_32 (input_bfd, insn, p); | |
17106 | } | |
17107 | break; | |
67f0cbdb AM |
17108 | } |
17109 | ||
65f38f15 AM |
17110 | /* Do any further special processing. */ |
17111 | switch (r_type) | |
17112 | { | |
17113 | default: | |
17114 | break; | |
17115 | ||
25f23106 | 17116 | case R_PPC64_REL16_HA: |
4a969973 AM |
17117 | case R_PPC64_REL16_HIGHA: |
17118 | case R_PPC64_REL16_HIGHERA: | |
17119 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 17120 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
17121 | case R_PPC64_ADDR16_HA: |
17122 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
17123 | case R_PPC64_ADDR16_HIGHERA: |
17124 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
17125 | case R_PPC64_TOC16_HA: |
17126 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 17127 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 17128 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 17129 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 17130 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
17131 | case R_PPC64_DTPREL16_HA: |
17132 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 17133 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 17134 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
17135 | /* It's just possible that this symbol is a weak symbol |
17136 | that's not actually defined anywhere. In that case, | |
17137 | 'sec' would be NULL, and we should leave the symbol | |
17138 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
17139 | if (sec == NULL) |
17140 | break; | |
1a0670f3 | 17141 | /* Fall through. */ |
5c5f6e17 AM |
17142 | |
17143 | case R_PPC64_GOT16_HA: | |
17144 | case R_PPC64_PLTGOT16_HA: | |
17145 | case R_PPC64_PLT16_HA: | |
17146 | case R_PPC64_GOT_TLSGD16_HA: | |
17147 | case R_PPC64_GOT_TLSLD16_HA: | |
17148 | case R_PPC64_GOT_TPREL16_HA: | |
17149 | case R_PPC64_GOT_DTPREL16_HA: | |
17150 | /* Add 0x10000 if sign bit in 0:15 is set. | |
17151 | Bits 0:15 are not used. */ | |
17152 | addend += 0x8000; | |
65f38f15 AM |
17153 | break; |
17154 | ||
5663e321 AM |
17155 | case R_PPC64_D34_HA30: |
17156 | case R_PPC64_ADDR16_HIGHERA34: | |
17157 | case R_PPC64_ADDR16_HIGHESTA34: | |
17158 | case R_PPC64_REL16_HIGHERA34: | |
17159 | case R_PPC64_REL16_HIGHESTA34: | |
17160 | if (sec != NULL) | |
17161 | addend += 1ULL << 33; | |
17162 | break; | |
17163 | ||
65f38f15 AM |
17164 | case R_PPC64_ADDR16_DS: |
17165 | case R_PPC64_ADDR16_LO_DS: | |
17166 | case R_PPC64_GOT16_DS: | |
17167 | case R_PPC64_GOT16_LO_DS: | |
17168 | case R_PPC64_PLT16_LO_DS: | |
17169 | case R_PPC64_SECTOFF_DS: | |
17170 | case R_PPC64_SECTOFF_LO_DS: | |
17171 | case R_PPC64_TOC16_DS: | |
17172 | case R_PPC64_TOC16_LO_DS: | |
17173 | case R_PPC64_PLTGOT16_DS: | |
17174 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
17175 | case R_PPC64_GOT_TPREL16_DS: |
17176 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17177 | case R_PPC64_GOT_DTPREL16_DS: | |
17178 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17179 | case R_PPC64_TPREL16_DS: | |
17180 | case R_PPC64_TPREL16_LO_DS: | |
17181 | case R_PPC64_DTPREL16_DS: | |
17182 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
17183 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
17184 | mask = 3; | |
a680de9a PB |
17185 | /* If this reloc is against an lq, lxv, or stxv insn, then |
17186 | the value must be a multiple of 16. This is somewhat of | |
17187 | a hack, but the "correct" way to do this by defining _DQ | |
17188 | forms of all the _DS relocs bloats all reloc switches in | |
17189 | this file. It doesn't make much sense to use these | |
17190 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
17191 | if ((insn & (0x3fu << 26)) == (56u << 26) |
17192 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 17193 | mask = 15; |
a680de9a PB |
17194 | relocation += addend; |
17195 | addend = insn & (mask ^ 3); | |
17196 | if ((relocation & mask) != 0) | |
65f38f15 | 17197 | { |
a680de9a | 17198 | relocation ^= relocation & mask; |
25f53a85 | 17199 | info->callbacks->einfo |
695344c0 | 17200 | /* xgettext:c-format */ |
174d0a74 | 17201 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 17202 | input_bfd, input_section, rel->r_offset, |
d830549d | 17203 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 17204 | mask + 1); |
65f38f15 | 17205 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 17206 | ret = FALSE; |
c316a17c | 17207 | goto copy_reloc; |
65f38f15 AM |
17208 | } |
17209 | break; | |
5bd4f169 AM |
17210 | } |
17211 | ||
239e1f3a AM |
17212 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
17213 | because such sections are not SEC_ALLOC and thus ld.so will | |
17214 | not process them. */ | |
d830549d | 17215 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 17216 | if (unresolved_reloc |
239e1f3a | 17217 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
17218 | && h->elf.def_dynamic) |
17219 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
17220 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 17221 | { |
25f53a85 | 17222 | info->callbacks->einfo |
695344c0 | 17223 | /* xgettext:c-format */ |
c1c8c1ef | 17224 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 17225 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 17226 | howto->name, |
039b3fef | 17227 | h->elf.root.root.string); |
b34976b6 | 17228 | ret = FALSE; |
9c07fe7c | 17229 | } |
5bd4f169 | 17230 | |
b80eed39 AM |
17231 | /* 16-bit fields in insns mostly have signed values, but a |
17232 | few insns have 16-bit unsigned values. Really, we should | |
17233 | have different reloc types. */ | |
17234 | if (howto->complain_on_overflow != complain_overflow_dont | |
17235 | && howto->dst_mask == 0xffff | |
17236 | && (input_section->flags & SEC_CODE) != 0) | |
17237 | { | |
17238 | enum complain_overflow complain = complain_overflow_signed; | |
17239 | ||
17240 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 17241 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
17242 | complain = complain_overflow_bitfield; |
17243 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
17244 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
17245 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
17246 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
17247 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
17248 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
17249 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
17250 | complain = complain_overflow_unsigned; |
17251 | if (howto->complain_on_overflow != complain) | |
17252 | { | |
17253 | alt_howto = *howto; | |
17254 | alt_howto.complain_on_overflow = complain; | |
17255 | howto = &alt_howto; | |
17256 | } | |
17257 | } | |
17258 | ||
5663e321 | 17259 | switch (r_type) |
a680de9a | 17260 | { |
5663e321 AM |
17261 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
17262 | case R_PPC64_D34: | |
17263 | case R_PPC64_D34_LO: | |
17264 | case R_PPC64_D34_HI30: | |
17265 | case R_PPC64_D34_HA30: | |
17266 | case R_PPC64_PCREL34: | |
17267 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
17268 | case R_PPC64_TPREL34: |
17269 | case R_PPC64_DTPREL34: | |
87c69f97 AM |
17270 | case R_PPC64_GOT_TLSGD_PCREL34: |
17271 | case R_PPC64_GOT_TLSLD_PCREL34: | |
17272 | case R_PPC64_GOT_TPREL_PCREL34: | |
17273 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
17274 | case R_PPC64_PLT_PCREL34: |
17275 | case R_PPC64_PLT_PCREL34_NOTOC: | |
17276 | case R_PPC64_D28: | |
17277 | case R_PPC64_PCREL28: | |
17278 | if (rel->r_offset + 8 > input_section->size) | |
17279 | r = bfd_reloc_outofrange; | |
17280 | else | |
17281 | { | |
5663e321 AM |
17282 | relocation += addend; |
17283 | if (howto->pc_relative) | |
17284 | relocation -= (rel->r_offset | |
17285 | + input_section->output_offset | |
17286 | + input_section->output_section->vma); | |
17287 | relocation >>= howto->rightshift; | |
17288 | ||
17289 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
17290 | pinsn <<= 32; | |
17291 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
17292 | ||
17293 | pinsn &= ~howto->dst_mask; | |
17294 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
17295 | & howto->dst_mask); | |
17296 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
17297 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
17298 | r = bfd_reloc_ok; | |
17299 | if (howto->complain_on_overflow == complain_overflow_signed | |
17300 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
17301 | >= 1ULL << howto->bitsize)) | |
17302 | r = bfd_reloc_overflow; | |
17303 | } | |
17304 | break; | |
17305 | ||
17306 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
17307 | if (rel->r_offset + 4 > input_section->size) |
17308 | r = bfd_reloc_outofrange; | |
17309 | else | |
17310 | { | |
17311 | relocation += addend; | |
17312 | relocation -= (rel->r_offset | |
17313 | + input_section->output_offset | |
17314 | + input_section->output_section->vma); | |
3de43e7b | 17315 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
17316 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
17317 | insn &= ~0x1fffc1; | |
3de43e7b | 17318 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
17319 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
17320 | r = bfd_reloc_ok; | |
3de43e7b | 17321 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
17322 | r = bfd_reloc_overflow; |
17323 | } | |
5663e321 AM |
17324 | break; |
17325 | ||
17326 | default: | |
17327 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
17328 | contents, rel->r_offset, | |
17329 | relocation, addend); | |
a680de9a | 17330 | } |
5bd4f169 | 17331 | |
ef60b7ff | 17332 | if (r != bfd_reloc_ok) |
5bd4f169 | 17333 | { |
bc30df16 | 17334 | char *more_info = NULL; |
b80eed39 | 17335 | const char *reloc_name = howto->name; |
bc30df16 AM |
17336 | |
17337 | if (reloc_dest != DEST_NORMAL) | |
17338 | { | |
17339 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
17340 | if (more_info != NULL) | |
17341 | { | |
17342 | strcpy (more_info, reloc_name); | |
17343 | strcat (more_info, (reloc_dest == DEST_OPD | |
17344 | ? " (OPD)" : " (stub)")); | |
17345 | reloc_name = more_info; | |
17346 | } | |
17347 | } | |
17348 | ||
cd27b276 | 17349 | if (r == bfd_reloc_overflow) |
5bd4f169 | 17350 | { |
8131c122 AM |
17351 | /* On code like "if (foo) foo();" don't report overflow |
17352 | on a branch to zero when foo is undefined. */ | |
17353 | if (!warned | |
17354 | && (reloc_dest == DEST_STUB | |
17355 | || !(h != NULL | |
17356 | && (h->elf.root.type == bfd_link_hash_undefweak | |
17357 | || h->elf.root.type == bfd_link_hash_undefined) | |
17358 | && is_branch_reloc (r_type)))) | |
9e51d549 AM |
17359 | info->callbacks->reloc_overflow |
17360 | (info, (struct bfd_link_hash_entry *) h, sym_name, | |
17361 | reloc_name, orig_rel.r_addend, input_bfd, input_section, | |
17362 | rel->r_offset); | |
ef60b7ff AM |
17363 | } |
17364 | else | |
17365 | { | |
25f53a85 | 17366 | info->callbacks->einfo |
695344c0 | 17367 | /* xgettext:c-format */ |
c1c8c1ef | 17368 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 17369 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 17370 | reloc_name, sym_name, (int) r); |
b34976b6 | 17371 | ret = FALSE; |
ef60b7ff | 17372 | } |
c9594989 | 17373 | free (more_info); |
5bd4f169 | 17374 | } |
c316a17c AM |
17375 | copy_reloc: |
17376 | if (wrel != rel) | |
17377 | *wrel = *rel; | |
17378 | } | |
17379 | ||
17380 | if (wrel != rel) | |
17381 | { | |
17382 | Elf_Internal_Shdr *rel_hdr; | |
17383 | size_t deleted = rel - wrel; | |
17384 | ||
17385 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
17386 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17387 | if (rel_hdr->sh_size == 0) | |
17388 | { | |
17389 | /* It is too late to remove an empty reloc section. Leave | |
17390 | one NONE reloc. | |
17391 | ??? What is wrong with an empty section??? */ | |
17392 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
17393 | deleted -= 1; | |
17394 | } | |
17395 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
17396 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17397 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
17398 | } |
17399 | ||
645ea6a9 AM |
17400 | /* If we're emitting relocations, then shortly after this function |
17401 | returns, reloc offsets and addends for this section will be | |
17402 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
17403 | file rather than the input. Save a copy of the relocs for |
17404 | opd_entry_value. */ | |
0e1862bb | 17405 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
17406 | { |
17407 | bfd_size_type amt; | |
17408 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
17409 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
17410 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
17411 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
17412 | if (rel == NULL) |
17413 | return FALSE; | |
17414 | memcpy (rel, relocs, amt); | |
17415 | } | |
5bd4f169 AM |
17416 | return ret; |
17417 | } | |
17418 | ||
754021d0 AM |
17419 | /* Adjust the value of any local symbols in opd sections. */ |
17420 | ||
6e0b88f1 | 17421 | static int |
754021d0 AM |
17422 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
17423 | const char *name ATTRIBUTE_UNUSED, | |
17424 | Elf_Internal_Sym *elfsym, | |
17425 | asection *input_sec, | |
17426 | struct elf_link_hash_entry *h) | |
17427 | { | |
74f0fb50 AM |
17428 | struct _opd_sec_data *opd; |
17429 | long adjust; | |
754021d0 AM |
17430 | bfd_vma value; |
17431 | ||
4025353c | 17432 | if (h != NULL) |
6e0b88f1 | 17433 | return 1; |
4025353c | 17434 | |
74f0fb50 AM |
17435 | opd = get_opd_info (input_sec); |
17436 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 17437 | return 1; |
754021d0 AM |
17438 | |
17439 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 17440 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
17441 | value -= input_sec->output_section->vma; |
17442 | ||
51aecdc5 | 17443 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 17444 | if (adjust == -1) |
6e0b88f1 AM |
17445 | return 2; |
17446 | ||
17447 | elfsym->st_value += adjust; | |
17448 | return 1; | |
754021d0 AM |
17449 | } |
17450 | ||
5bd4f169 AM |
17451 | /* Finish up dynamic symbol handling. We set the contents of various |
17452 | dynamic sections here. */ | |
17453 | ||
b34976b6 | 17454 | static bfd_boolean |
4ce794b7 AM |
17455 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
17456 | struct bfd_link_info *info, | |
17457 | struct elf_link_hash_entry *h, | |
4aef7643 | 17458 | Elf_Internal_Sym *sym) |
5bd4f169 | 17459 | { |
65f38f15 | 17460 | struct ppc_link_hash_table *htab; |
8387904d | 17461 | struct plt_entry *ent; |
5bd4f169 | 17462 | |
65f38f15 | 17463 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17464 | if (htab == NULL) |
17465 | return FALSE; | |
5bd4f169 | 17466 | |
49c09209 AM |
17467 | if (!htab->opd_abi && !h->def_regular) |
17468 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
17469 | if (ent->plt.offset != (bfd_vma) -1) | |
17470 | { | |
17471 | /* Mark the symbol as undefined, rather than as | |
17472 | defined in glink. Leave the value if there were | |
17473 | any relocations where pointer equality matters | |
17474 | (this is a clue for the dynamic linker, to make | |
17475 | function pointer comparisons work between an | |
17476 | application and shared library), otherwise set it | |
17477 | to zero. */ | |
17478 | sym->st_shndx = SHN_UNDEF; | |
17479 | if (!h->pointer_equality_needed) | |
17480 | sym->st_value = 0; | |
17481 | else if (!h->ref_regular_nonweak) | |
17482 | { | |
17483 | /* This breaks function pointer comparisons, but | |
17484 | that is better than breaking tests for a NULL | |
17485 | function pointer. */ | |
17486 | sym->st_value = 0; | |
17487 | } | |
17488 | break; | |
17489 | } | |
5bd4f169 | 17490 | |
1bdd8fac AM |
17491 | if (h->needs_copy |
17492 | && (h->root.type == bfd_link_hash_defined | |
17493 | || h->root.type == bfd_link_hash_defweak) | |
17494 | && (h->root.u.def.section == htab->elf.sdynbss | |
17495 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 17496 | { |
65f38f15 | 17497 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 17498 | Elf_Internal_Rela rela; |
5474d94f | 17499 | asection *srel; |
49c09209 | 17500 | bfd_byte *loc; |
5bd4f169 | 17501 | |
1bdd8fac | 17502 | if (h->dynindx == -1) |
65f38f15 | 17503 | abort (); |
5bd4f169 | 17504 | |
ed7007c1 | 17505 | rela.r_offset = defined_sym_val (h); |
5bd4f169 AM |
17506 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); |
17507 | rela.r_addend = 0; | |
afbf7e8e | 17508 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
17509 | srel = htab->elf.sreldynrelro; |
17510 | else | |
17511 | srel = htab->elf.srelbss; | |
17512 | loc = srel->contents; | |
17513 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 17514 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
17515 | } |
17516 | ||
b34976b6 | 17517 | return TRUE; |
5bd4f169 AM |
17518 | } |
17519 | ||
65f38f15 AM |
17520 | /* Used to decide how to sort relocs in an optimal manner for the |
17521 | dynamic linker, before writing them out. */ | |
17522 | ||
17523 | static enum elf_reloc_type_class | |
7e612e98 AM |
17524 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
17525 | const asection *rel_sec, | |
17526 | const Elf_Internal_Rela *rela) | |
65f38f15 | 17527 | { |
04c9666a | 17528 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
17529 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
17530 | ||
33e44f2e | 17531 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 17532 | return reloc_class_ifunc; |
a33d1f77 | 17533 | |
4ce794b7 | 17534 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 17535 | switch (r_type) |
65f38f15 AM |
17536 | { |
17537 | case R_PPC64_RELATIVE: | |
17538 | return reloc_class_relative; | |
17539 | case R_PPC64_JMP_SLOT: | |
17540 | return reloc_class_plt; | |
17541 | case R_PPC64_COPY: | |
17542 | return reloc_class_copy; | |
17543 | default: | |
17544 | return reloc_class_normal; | |
17545 | } | |
17546 | } | |
17547 | ||
5bd4f169 AM |
17548 | /* Finish up the dynamic sections. */ |
17549 | ||
b34976b6 | 17550 | static bfd_boolean |
4ce794b7 AM |
17551 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
17552 | struct bfd_link_info *info) | |
5bd4f169 | 17553 | { |
65f38f15 AM |
17554 | struct ppc_link_hash_table *htab; |
17555 | bfd *dynobj; | |
5bd4f169 | 17556 | asection *sdyn; |
5bd4f169 | 17557 | |
65f38f15 | 17558 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17559 | if (htab == NULL) |
17560 | return FALSE; | |
17561 | ||
65f38f15 | 17562 | dynobj = htab->elf.dynobj; |
3d4d4302 | 17563 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 17564 | |
65f38f15 | 17565 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 17566 | { |
5bd4f169 AM |
17567 | Elf64_External_Dyn *dyncon, *dynconend; |
17568 | ||
33e44f2e | 17569 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 17570 | abort (); |
5bd4f169 AM |
17571 | |
17572 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 17573 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
17574 | for (; dyncon < dynconend; dyncon++) |
17575 | { | |
17576 | Elf_Internal_Dyn dyn; | |
19397422 | 17577 | asection *s; |
5bd4f169 AM |
17578 | |
17579 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
17580 | ||
17581 | switch (dyn.d_tag) | |
17582 | { | |
65f38f15 AM |
17583 | default: |
17584 | continue; | |
5bd4f169 | 17585 | |
5d1634d7 | 17586 | case DT_PPC64_GLINK: |
4ce794b7 | 17587 | s = htab->glink; |
6348e046 | 17588 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
17589 | /* We stupidly defined DT_PPC64_GLINK to be the start |
17590 | of glink rather than the first entry point, which is | |
17591 | what ld.so needs, and now have a bigger stub to | |
17592 | support automatic multiple TOCs. */ | |
9e390558 | 17593 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
17594 | break; |
17595 | ||
19397422 AM |
17596 | case DT_PPC64_OPD: |
17597 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17598 | if (s == NULL) |
17599 | continue; | |
17600 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
17601 | break; |
17602 | ||
e8910a83 | 17603 | case DT_PPC64_OPT: |
5663e321 AM |
17604 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
17605 | || htab->notoc_plt) | |
e8910a83 | 17606 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
17607 | if (htab->has_plt_localentry0) |
17608 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
17609 | break; |
17610 | ||
19397422 AM |
17611 | case DT_PPC64_OPDSZ: |
17612 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17613 | if (s == NULL) |
17614 | continue; | |
eea6121a | 17615 | dyn.d_un.d_val = s->size; |
19397422 AM |
17616 | break; |
17617 | ||
65f38f15 | 17618 | case DT_PLTGOT: |
33e44f2e | 17619 | s = htab->elf.splt; |
6348e046 | 17620 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
17621 | break; |
17622 | ||
17623 | case DT_JMPREL: | |
33e44f2e | 17624 | s = htab->elf.srelplt; |
6348e046 | 17625 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 17626 | break; |
5bd4f169 | 17627 | |
65f38f15 | 17628 | case DT_PLTRELSZ: |
33e44f2e | 17629 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 17630 | break; |
82e66161 AM |
17631 | |
17632 | case DT_TEXTREL: | |
cebd6b8a | 17633 | if (htab->elf.ifunc_resolvers) |
82e66161 AM |
17634 | info->callbacks->einfo |
17635 | (_("%P: warning: text relocations and GNU indirect " | |
17636 | "functions may result in a segfault at runtime\n")); | |
17637 | continue; | |
5bd4f169 | 17638 | } |
5bd4f169 | 17639 | |
65f38f15 | 17640 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 17641 | } |
5bd4f169 AM |
17642 | } |
17643 | ||
6528b6eb AM |
17644 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
17645 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17646 | { |
17647 | /* Fill in the first entry in the global offset table. | |
17648 | We use it to hold the link-time TOCbase. */ | |
17649 | bfd_put_64 (output_bfd, | |
60ee0d4a | 17650 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 17651 | htab->elf.sgot->contents); |
5d1634d7 AM |
17652 | |
17653 | /* Set .got entry size. */ | |
2cdcc330 AM |
17654 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
17655 | = 8; | |
5d1634d7 AM |
17656 | } |
17657 | ||
6528b6eb AM |
17658 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
17659 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17660 | { |
17661 | /* Set .plt entry size. */ | |
33e44f2e | 17662 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 17663 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
17664 | } |
17665 | ||
84f5d08e AM |
17666 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
17667 | brlt ourselves if emitrelocations. */ | |
17668 | if (htab->brlt != NULL | |
17669 | && htab->brlt->reloc_count != 0 | |
17670 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17671 | htab->brlt, | |
d4730f92 | 17672 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
17673 | elf_section_data (htab->brlt)->relocs, |
17674 | NULL)) | |
17675 | return FALSE; | |
17676 | ||
176a0d42 AM |
17677 | if (htab->glink != NULL |
17678 | && htab->glink->reloc_count != 0 | |
17679 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17680 | htab->glink, | |
d4730f92 | 17681 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
17682 | elf_section_data (htab->glink)->relocs, |
17683 | NULL)) | |
17684 | return FALSE; | |
17685 | ||
da44f4e5 | 17686 | |
df136d64 AM |
17687 | if (htab->glink_eh_frame != NULL |
17688 | && htab->glink_eh_frame->size != 0 | |
17689 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
17690 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
17691 | htab->glink_eh_frame, | |
17692 | htab->glink_eh_frame->contents)) | |
17693 | return FALSE; | |
58d180e8 | 17694 | |
e717da7e | 17695 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
17696 | since we didn't add them to DYNOBJ. We know dynobj is the first |
17697 | bfd. */ | |
c72f2fb2 | 17698 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
17699 | { |
17700 | asection *s; | |
7b53ace3 | 17701 | |
0c8d6e5c | 17702 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
17703 | continue; |
17704 | ||
e717da7e AM |
17705 | s = ppc64_elf_tdata (dynobj)->got; |
17706 | if (s != NULL | |
eea6121a | 17707 | && s->size != 0 |
e717da7e AM |
17708 | && s->output_section != bfd_abs_section_ptr |
17709 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17710 | s->contents, s->output_offset, | |
eea6121a | 17711 | s->size)) |
e717da7e AM |
17712 | return FALSE; |
17713 | s = ppc64_elf_tdata (dynobj)->relgot; | |
17714 | if (s != NULL | |
eea6121a | 17715 | && s->size != 0 |
e717da7e AM |
17716 | && s->output_section != bfd_abs_section_ptr |
17717 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17718 | s->contents, s->output_offset, | |
eea6121a | 17719 | s->size)) |
e717da7e AM |
17720 | return FALSE; |
17721 | } | |
f6c52c13 | 17722 | |
b34976b6 | 17723 | return TRUE; |
5bd4f169 AM |
17724 | } |
17725 | ||
5bd4f169 | 17726 | #include "elf64-target.h" |
7b8e7dad AM |
17727 | |
17728 | /* FreeBSD support */ | |
17729 | ||
17730 | #undef TARGET_LITTLE_SYM | |
6afcdeb3 | 17731 | #define TARGET_LITTLE_SYM powerpc_elf64_fbsd_le_vec |
7b8e7dad | 17732 | #undef TARGET_LITTLE_NAME |
6afcdeb3 | 17733 | #define TARGET_LITTLE_NAME "elf64-powerpcle-freebsd" |
7b8e7dad AM |
17734 | |
17735 | #undef TARGET_BIG_SYM | |
6d00b590 | 17736 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
17737 | #undef TARGET_BIG_NAME |
17738 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
17739 | ||
17740 | #undef ELF_OSABI | |
17741 | #define ELF_OSABI ELFOSABI_FREEBSD | |
17742 | ||
17743 | #undef elf64_bed | |
17744 | #define elf64_bed elf64_powerpc_fbsd_bed | |
17745 | ||
17746 | #include "elf64-target.h" |