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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
b3adc24a | 2 | Copyright (C) 1999-2020 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 | |
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
5bd4f169 | 30 | #include "bfd.h" |
5bd4f169 AM |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
04c9666a | 34 | #include "elf/ppc64.h" |
5d1634d7 | 35 | #include "elf64-ppc.h" |
58d180e8 | 36 | #include "dwarf2.h" |
5bd4f169 | 37 | |
bb294208 AM |
38 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
39 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 | |
40 | ||
805fc799 | 41 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
43 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 55 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 56 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5663e321 AM |
57 | static bfd_reloc_status_type ppc64_elf_prefix_reloc |
58 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 59 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 60 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 61 | static bfd_vma opd_entry_value |
aef36ac1 | 62 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 63 | |
6d00b590 | 64 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 65 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 66 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
67 | #define TARGET_BIG_NAME "elf64-powerpc" |
68 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 69 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
70 | #define ELF_MACHINE_CODE EM_PPC64 |
71 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
72 | #define ELF_COMMONPAGESIZE 0x1000 |
73 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
74 | #define elf_info_to_howto ppc64_elf_info_to_howto |
75 | ||
76 | #define elf_backend_want_got_sym 0 | |
77 | #define elf_backend_want_plt_sym 0 | |
78 | #define elf_backend_plt_alignment 3 | |
79 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 80 | #define elf_backend_got_header_size 8 |
5474d94f | 81 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
82 | #define elf_backend_can_gc_sections 1 |
83 | #define elf_backend_can_refcount 1 | |
84 | #define elf_backend_rela_normal 1 | |
64f52338 | 85 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 86 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 87 | |
e717da7e | 88 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 89 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 90 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
91 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
92 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
93 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
94 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 95 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 96 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 97 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
98 | |
99 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
100 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
101 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 102 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 103 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 104 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 105 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 106 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 107 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 108 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 109 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 110 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 111 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 112 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 113 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
114 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
115 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 116 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
c9405344 | 117 | #define elf_backend_always_size_sections ppc64_elf_edit |
ad8e1ba5 | 118 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections |
a345bc8d | 119 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 120 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 121 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
122 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
123 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
124 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
125 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 126 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 127 | #define elf_backend_special_sections ppc64_elf_special_sections |
bf577467 | 128 | #define elf_backend_section_flags ppc64_elf_section_flags |
6911b7dc | 129 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 130 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 131 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 132 | |
5bd4f169 AM |
133 | /* The name of the dynamic interpreter. This is put in the .interp |
134 | section. */ | |
135 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
136 | ||
137 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 138 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 139 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
140 | |
141 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 142 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 143 | |
a078d95a AM |
144 | /* Offsets to some stack save slots. */ |
145 | #define STK_LR 16 | |
146 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 147 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
148 | CR save slot. Used only by optimised __tls_get_addr call stub, |
149 | relying on __tls_get_addr_opt not saving CR.. */ | |
150 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
151 | ||
5bd4f169 | 152 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 153 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
154 | /* TOC base alignment. */ |
155 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
156 | |
157 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
158 | #define TP_OFFSET 0x7000 | |
159 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 160 | |
ad8e1ba5 AM |
161 | /* .plt call stub instructions. The normal stub is like this, but |
162 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 163 | insert an addi to adjust r11. */ |
a078d95a | 164 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
165 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
166 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
167 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
168 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
169 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
170 | #define BCTR 0x4e800420 /* bctr */ |
171 | ||
07d6d2b8 | 172 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
173 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
174 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
175 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
176 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
177 | ||
178 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
179 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
180 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
181 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
182 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
183 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
184 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 185 | |
71a39c98 | 186 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 187 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 188 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 189 | |
07d6d2b8 AM |
190 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
191 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
192 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 193 | |
04bdff6a | 194 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 195 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 196 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 197 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
198 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
199 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 200 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 201 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 202 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 203 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 204 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 205 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 206 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
207 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
208 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
209 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
210 | #define PADDI_R12_PC 0x0610000039800000ULL |
211 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 212 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 213 | |
3cd7c7d7 AM |
214 | /* __glink_PLTresolve stub instructions. We enter with the index in |
215 | R0 for ELFv1, and the address of a glink branch in R12 for ELFv2. */ | |
9e390558 | 216 | #define GLINK_PLTRESOLVE_SIZE(htab) \ |
3cd7c7d7 | 217 | (8u + (htab->opd_abi ? 11 * 4 : htab->has_plt_localentry0 ? 14 * 4 : 13 * 4)) |
ee4bf8d2 AM |
218 | /* 0: */ |
219 | /* .quad plt0-1f */ | |
220 | /* __glink: */ | |
221 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
222 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
223 | /* 1: */ | |
224 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 225 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 226 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
227 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
228 | /* ld %12,0(%11) */ | |
229 | /* ld %2,8(%11) */ | |
230 | /* mtctr %12 */ | |
231 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 232 | /* bctr */ |
3cd7c7d7 AM |
233 | |
234 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ | |
235 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
236 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
237 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
238 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
239 | #define LD_R0_0R11 0xe80b0000 /* ld %r0,0(%r11) */ | |
240 | #define ADD_R11_R0_R11 0x7d605a14 /* add %r11,%r0,%r11 */ | |
5d1634d7 AM |
241 | |
242 | /* Pad with this. */ | |
243 | #define NOP 0x60000000 | |
244 | ||
721956f4 AM |
245 | /* Some other nops. */ |
246 | #define CROR_151515 0x4def7b82 | |
247 | #define CROR_313131 0x4ffffb82 | |
248 | ||
cedb70c5 | 249 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
250 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
251 | #define B_DOT 0x48000000 /* b . */ | |
252 | ||
253 | /* After that, we need two instructions to load the index, followed by | |
254 | a branch. */ | |
255 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 256 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 257 | |
deb0e272 AM |
258 | /* Instructions used by the save and restore reg functions. */ |
259 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
260 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
261 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
262 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
263 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
264 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
265 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
266 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
267 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
268 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
269 | #define BLR 0x4e800020 /* blr */ |
270 | ||
41bd81ab AM |
271 | /* Since .opd is an array of descriptors and each entry will end up |
272 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
273 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 274 | relocate .opd without reloc entries. */ |
41bd81ab AM |
275 | #ifndef NO_OPD_RELOCS |
276 | #define NO_OPD_RELOCS 0 | |
277 | #endif | |
810d4e75 | 278 | |
a4b6fadd AM |
279 | #ifndef ARRAY_SIZE |
280 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
281 | #endif | |
282 | ||
810d4e75 AM |
283 | static inline int |
284 | abiversion (bfd *abfd) | |
285 | { | |
286 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
287 | } | |
288 | ||
289 | static inline void | |
290 | set_abiversion (bfd *abfd, int ver) | |
291 | { | |
292 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
293 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
294 | } | |
5bd4f169 AM |
295 | \f |
296 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
297 | /* Like other ELF RELA targets that don't apply multiple |
298 | field-altering relocations to the same localation, src_mask is | |
299 | always zero and pcrel_offset is the same as pc_relative. | |
300 | PowerPC can always use a zero bitpos, even when the field is not at | |
301 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
302 | and bitpos=2 which matches the ABI description, or as we do here, | |
303 | rightshift=0, bitsize=26 and bitpos=0. */ | |
304 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
305 | complain, special_func) \ | |
306 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
307 | complain_overflow_ ## complain, special_func, \ | |
308 | #type, FALSE, 0, mask, pc_relative) | |
309 | ||
04c9666a | 310 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 311 | |
f3185997 NC |
312 | static reloc_howto_type ppc64_elf_howto_raw[] = |
313 | { | |
5bd4f169 | 314 | /* This reloc does nothing. */ |
46807bf4 AM |
315 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
316 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
317 | |
318 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
319 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
320 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
321 | |
322 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
323 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
324 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
325 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
326 | |
327 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
328 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
329 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
330 | |
331 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
332 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
333 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
334 | |
335 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
336 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
337 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
338 | |
339 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
340 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
341 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
342 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
343 | |
344 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
345 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
346 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
347 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
348 | |
349 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
350 | indicate that the branch is expected to be taken. The lower two | |
351 | bits must be zero. */ | |
46807bf4 AM |
352 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
353 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
354 | |
355 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
356 | indicate that the branch is not expected to be taken. The lower | |
357 | two bits must be zero. */ | |
46807bf4 AM |
358 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
359 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
360 | |
361 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
362 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
363 | ppc64_elf_branch_reloc), | |
5bd4f169 | 364 | |
05d0e962 | 365 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
366 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
367 | ppc64_elf_branch_reloc), | |
05d0e962 | 368 | |
5bd4f169 | 369 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
370 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
371 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
372 | |
373 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
374 | the branch is expected to be taken. The lower two bits must be | |
375 | zero. */ | |
46807bf4 AM |
376 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
377 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
378 | |
379 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
380 | the branch is not expected to be taken. The lower two bits must | |
381 | be zero. */ | |
46807bf4 AM |
382 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
383 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
384 | |
385 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
386 | symbol. */ | |
46807bf4 AM |
387 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
388 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
389 | |
390 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
391 | the symbol. */ | |
46807bf4 AM |
392 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
393 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
394 | |
395 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
396 | the symbol. */ | |
46807bf4 AM |
397 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
398 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
399 | |
400 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
401 | the symbol. */ | |
46807bf4 AM |
402 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
403 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
404 | |
405 | /* This is used only by the dynamic linker. The symbol should exist | |
406 | both in the object being run and in some shared library. The | |
407 | dynamic linker copies the data addressed by the symbol from the | |
408 | shared library into the object, because the object being | |
409 | run has to have the data at some particular address. */ | |
46807bf4 AM |
410 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
411 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
412 | |
413 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
414 | entries. */ | |
46807bf4 AM |
415 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
416 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
417 | |
418 | /* Created by the link editor. Marks a procedure linkage table | |
419 | entry for a symbol. */ | |
46807bf4 AM |
420 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
421 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
422 | |
423 | /* Used only by the dynamic linker. When the object is run, this | |
424 | doubleword64 is set to the load address of the object, plus the | |
425 | addend. */ | |
46807bf4 AM |
426 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
427 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
428 | |
429 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
430 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
431 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
432 | |
433 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
434 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
435 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
436 | |
437 | /* 32-bit PC relative. */ | |
46807bf4 AM |
438 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
439 | bfd_elf_generic_reloc), | |
5bd4f169 | 440 | |
10ed1bba | 441 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
442 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
443 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
444 | |
445 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
446 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
447 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
448 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
449 | |
450 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
451 | the symbol. */ | |
46807bf4 AM |
452 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
453 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
454 | |
455 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
456 | the symbol. */ | |
46807bf4 AM |
457 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
458 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
459 | |
460 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
461 | the symbol. */ | |
46807bf4 AM |
462 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
463 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 464 | |
c061c2d8 | 465 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
466 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
467 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 468 | |
c061c2d8 | 469 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
470 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
471 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
472 | |
473 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
474 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
475 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
476 | |
477 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
478 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
479 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 480 | |
04c9666a | 481 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
482 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
483 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
484 | |
485 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
486 | ||
487 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
488 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
489 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
490 | |
491 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
492 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
493 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
494 | |
495 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
496 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
497 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
498 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
499 | |
500 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
501 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
502 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
503 | |
504 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
505 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
506 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
507 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
508 | |
509 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
510 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
511 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
512 | |
513 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
514 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
515 | bfd_elf_generic_reloc), | |
5bd4f169 | 516 | |
cedb70c5 | 517 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
518 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
519 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
520 | |
521 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
522 | table. */ | |
523 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
524 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
525 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
526 | |
527 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 528 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
529 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
530 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
531 | |
532 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 533 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
534 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
535 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
536 | |
537 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 538 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
539 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
540 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
541 | |
542 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
543 | contents of the low 16 bits, treated as a signed number, is | |
544 | negative. */ | |
5bd4f169 | 545 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
546 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
547 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
548 | |
549 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 550 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
551 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
552 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
553 | |
554 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
555 | value to relocate may (!) refer to a PLT entry which the link | |
556 | editor (a) may replace with the symbol value. If the link editor | |
557 | is unable to fully resolve the symbol, it may (b) create a PLT | |
558 | entry and store the address to the new PLT entry in the GOT. | |
559 | This permits lazy resolution of function symbols at run time. | |
560 | The link editor may also skip all of this and just (c) emit a | |
561 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
562 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
563 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
564 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
565 | |
566 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
567 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
568 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
569 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
570 | |
571 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
572 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
573 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
574 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
575 | |
576 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
577 | 1 if the contents of the low 16 bits, treated as a signed number, | |
578 | is negative. */ | |
579 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
580 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
581 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
582 | |
583 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
584 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
585 | bfd_elf_generic_reloc), | |
411e1bfb AM |
586 | |
587 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
588 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
589 | bfd_elf_generic_reloc), | |
411e1bfb AM |
590 | |
591 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
592 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
593 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
594 | |
595 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
596 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
597 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
598 | |
599 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
600 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
601 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
602 | |
603 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
604 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
605 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
606 | |
607 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
608 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
609 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
610 | |
611 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
612 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
613 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
614 | |
615 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
616 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
617 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
618 | |
619 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
620 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
621 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
622 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
623 | |
624 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
625 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
626 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
627 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 628 | |
727fc41e | 629 | /* Marker relocs for TLS. */ |
46807bf4 AM |
630 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
631 | bfd_elf_generic_reloc), | |
632 | ||
633 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
634 | bfd_elf_generic_reloc), | |
635 | ||
636 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
637 | bfd_elf_generic_reloc), | |
727fc41e | 638 | |
23cedd1d AM |
639 | /* Marker reloc for optimizing r2 save in prologue rather than on |
640 | each plt call stub. */ | |
46807bf4 AM |
641 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
642 | bfd_elf_generic_reloc), | |
3b421ab3 | 643 | |
23cedd1d | 644 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
645 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
646 | bfd_elf_generic_reloc), | |
647 | ||
648 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
649 | bfd_elf_generic_reloc), | |
23cedd1d | 650 | |
411e1bfb AM |
651 | /* Computes the load module index of the load module that contains the |
652 | definition of its TLS sym. */ | |
46807bf4 AM |
653 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
654 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
655 | |
656 | /* Computes a dtv-relative displacement, the difference between the value | |
657 | of sym+add and the base address of the thread-local storage block that | |
658 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
659 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
660 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
661 | |
662 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
663 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
664 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
665 | |
666 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
667 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
668 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
669 | |
670 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
671 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
672 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
673 | |
674 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
675 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
676 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
677 | |
678 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
679 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
680 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
681 | |
682 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
683 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
684 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
685 | |
686 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
687 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
688 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
689 | |
690 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
691 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
692 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
693 | |
694 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
695 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
696 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
697 | |
698 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
699 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
700 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
701 | |
702 | /* Computes a tp-relative displacement, the difference between the value of | |
703 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
704 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
705 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
706 | |
707 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
708 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
709 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
710 | |
711 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
712 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
713 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
714 | |
715 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
716 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
717 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
718 | |
719 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
720 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
721 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
722 | |
723 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
724 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
725 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
726 | |
727 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
728 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
729 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
730 | |
731 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
732 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
733 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
734 | |
735 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
736 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
737 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
738 | |
739 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
740 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
741 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
742 | |
743 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
744 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
745 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
746 | |
747 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
748 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
749 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
750 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
751 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 752 | |
411e1bfb | 753 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
754 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
755 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 756 | |
411e1bfb | 757 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
758 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
759 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 760 | |
411e1bfb | 761 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
762 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
763 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 764 | |
411e1bfb AM |
765 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
766 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
767 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
768 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
769 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 770 | |
411e1bfb | 771 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
772 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
773 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 774 | |
411e1bfb | 775 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
776 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
777 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 778 | |
411e1bfb | 779 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
780 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
781 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 782 | |
411e1bfb AM |
783 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
784 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
785 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
786 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 787 | |
411e1bfb | 788 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
789 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
790 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 791 | |
411e1bfb | 792 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
793 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
794 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 795 | |
411e1bfb | 796 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
797 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
798 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
799 | |
800 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
801 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
802 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
803 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 804 | |
411e1bfb | 805 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
806 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
807 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 808 | |
411e1bfb | 809 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
810 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
811 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 812 | |
411e1bfb | 813 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
814 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
815 | ppc64_elf_unhandled_reloc), | |
816 | ||
817 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
818 | ppc64_elf_unhandled_reloc), | |
819 | ||
820 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
821 | bfd_elf_generic_reloc), | |
e054468f | 822 | |
25f23106 | 823 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
824 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
825 | bfd_elf_generic_reloc), | |
25f23106 AM |
826 | |
827 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
828 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
829 | bfd_elf_generic_reloc), | |
25f23106 AM |
830 | |
831 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
832 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
833 | bfd_elf_generic_reloc), | |
25f23106 AM |
834 | |
835 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
836 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
837 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
838 | ppc64_elf_ha_reloc), | |
25f23106 | 839 | |
4a969973 AM |
840 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
841 | bfd_elf_generic_reloc), | |
842 | ||
843 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
844 | ppc64_elf_ha_reloc), | |
845 | ||
846 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
847 | bfd_elf_generic_reloc), | |
848 | ||
849 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
850 | ppc64_elf_ha_reloc), | |
851 | ||
852 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
853 | bfd_elf_generic_reloc), | |
854 | ||
855 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
856 | ppc64_elf_ha_reloc), | |
857 | ||
a680de9a | 858 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
859 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
860 | ppc64_elf_ha_reloc), | |
a680de9a | 861 | |
7ba71655 | 862 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
863 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
864 | ppc64_elf_ha_reloc), | |
7ba71655 | 865 | |
f9c6b907 | 866 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
867 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
868 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
869 | |
870 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
871 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
872 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
873 | |
874 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
875 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
876 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
877 | |
878 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
879 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
880 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
881 | |
882 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
883 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
884 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
885 | |
886 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
887 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
888 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 889 | |
006589cf | 890 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
891 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
892 | bfd_elf_generic_reloc), | |
006589cf | 893 | |
45965137 | 894 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
895 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
896 | bfd_elf_generic_reloc), | |
45965137 | 897 | |
5663e321 AM |
898 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, FALSE, dont, |
899 | bfd_elf_generic_reloc), | |
900 | ||
901 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, FALSE, dont, | |
902 | bfd_elf_generic_reloc), | |
903 | ||
904 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, FALSE, dont, | |
905 | bfd_elf_generic_reloc), | |
906 | ||
907 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
908 | ppc64_elf_prefix_reloc), | |
909 | ||
910 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, dont, | |
911 | ppc64_elf_prefix_reloc), | |
912 | ||
913 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
914 | ppc64_elf_prefix_reloc), | |
915 | ||
916 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
917 | ppc64_elf_prefix_reloc), | |
918 | ||
919 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
920 | ppc64_elf_prefix_reloc), | |
921 | ||
922 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
923 | ppc64_elf_unhandled_reloc), | |
924 | ||
925 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
926 | ppc64_elf_unhandled_reloc), | |
927 | ||
928 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
929 | ppc64_elf_unhandled_reloc), | |
930 | ||
c213164a AM |
931 | HOW (R_PPC64_TPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, |
932 | ppc64_elf_unhandled_reloc), | |
933 | ||
934 | HOW (R_PPC64_DTPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
935 | ppc64_elf_unhandled_reloc), | |
936 | ||
87c69f97 | 937 | HOW (R_PPC64_GOT_TLSGD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
938 | ppc64_elf_unhandled_reloc), |
939 | ||
87c69f97 | 940 | HOW (R_PPC64_GOT_TLSLD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
941 | ppc64_elf_unhandled_reloc), |
942 | ||
87c69f97 | 943 | HOW (R_PPC64_GOT_TPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
944 | ppc64_elf_unhandled_reloc), |
945 | ||
87c69f97 | 946 | HOW (R_PPC64_GOT_DTPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
947 | ppc64_elf_unhandled_reloc), |
948 | ||
5663e321 AM |
949 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, FALSE, dont, |
950 | bfd_elf_generic_reloc), | |
951 | ||
952 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, FALSE, dont, | |
953 | ppc64_elf_ha_reloc), | |
954 | ||
955 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, FALSE, dont, | |
956 | bfd_elf_generic_reloc), | |
957 | ||
958 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, FALSE, dont, | |
959 | ppc64_elf_ha_reloc), | |
960 | ||
961 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, TRUE, dont, | |
962 | bfd_elf_generic_reloc), | |
963 | ||
964 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, TRUE, dont, | |
965 | ppc64_elf_ha_reloc), | |
966 | ||
967 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, TRUE, dont, | |
968 | bfd_elf_generic_reloc), | |
969 | ||
970 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, TRUE, dont, | |
971 | ppc64_elf_ha_reloc), | |
972 | ||
973 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, FALSE, signed, | |
974 | ppc64_elf_prefix_reloc), | |
975 | ||
976 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, TRUE, signed, | |
977 | ppc64_elf_prefix_reloc), | |
978 | ||
5bd4f169 | 979 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
980 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
981 | NULL), | |
5bd4f169 AM |
982 | |
983 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
984 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
985 | NULL), | |
5bd4f169 AM |
986 | }; |
987 | ||
988 | \f | |
989 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
990 | be done. */ | |
991 | ||
992 | static void | |
4ce794b7 | 993 | ppc_howto_init (void) |
5bd4f169 AM |
994 | { |
995 | unsigned int i, type; | |
996 | ||
a4b6fadd | 997 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
998 | { |
999 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 1000 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
1001 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
1002 | } | |
1003 | } | |
1004 | ||
1005 | static reloc_howto_type * | |
87c69f97 | 1006 | ppc64_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
5bd4f169 | 1007 | { |
411e1bfb | 1008 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1009 | |
1010 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1011 | /* Initialize howto table if needed. */ | |
1012 | ppc_howto_init (); | |
1013 | ||
4ce794b7 | 1014 | switch (code) |
5bd4f169 AM |
1015 | { |
1016 | default: | |
f3185997 | 1017 | /* xgettext:c-format */ |
2cdcc330 AM |
1018 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
1019 | (int) code); | |
f3185997 | 1020 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 1021 | return NULL; |
5bd4f169 | 1022 | |
411e1bfb AM |
1023 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1024 | break; | |
1025 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1026 | break; | |
1027 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1028 | break; | |
1029 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1030 | break; | |
1031 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1032 | break; | |
1033 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1034 | break; | |
f9c6b907 AM |
1035 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1036 | break; | |
411e1bfb | 1037 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1038 | break; |
f9c6b907 AM |
1039 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1040 | break; | |
411e1bfb | 1041 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1042 | break; |
411e1bfb | 1043 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1044 | break; |
411e1bfb | 1045 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1046 | break; |
411e1bfb | 1047 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1048 | break; |
05d0e962 AM |
1049 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1050 | break; | |
411e1bfb | 1051 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1052 | break; |
411e1bfb | 1053 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1054 | break; |
411e1bfb | 1055 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1056 | break; |
411e1bfb | 1057 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1058 | break; |
411e1bfb | 1059 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1060 | break; |
411e1bfb | 1061 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1062 | break; |
411e1bfb | 1063 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1064 | break; |
411e1bfb | 1065 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1066 | break; |
411e1bfb | 1067 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1068 | break; |
411e1bfb | 1069 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1070 | break; |
411e1bfb | 1071 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1072 | break; |
411e1bfb | 1073 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1074 | break; |
411e1bfb | 1075 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1076 | break; |
411e1bfb | 1077 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1078 | break; |
411e1bfb | 1079 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1080 | break; |
411e1bfb | 1081 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1082 | break; |
411e1bfb | 1083 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1084 | break; |
411e1bfb | 1085 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1086 | break; |
411e1bfb | 1087 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1088 | break; |
411e1bfb | 1089 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1090 | break; |
411e1bfb | 1091 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1092 | break; |
411e1bfb | 1093 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1094 | break; |
411e1bfb | 1095 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1096 | break; |
411e1bfb | 1097 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1098 | break; |
411e1bfb | 1099 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1100 | break; |
411e1bfb | 1101 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1102 | break; |
411e1bfb | 1103 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1104 | break; |
411e1bfb | 1105 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1106 | break; |
411e1bfb | 1107 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1108 | break; |
411e1bfb | 1109 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1110 | break; |
411e1bfb | 1111 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1112 | break; |
411e1bfb | 1113 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1114 | break; |
411e1bfb | 1115 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1116 | break; |
411e1bfb | 1117 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1118 | break; |
411e1bfb | 1119 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1120 | break; |
411e1bfb | 1121 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1122 | break; |
411e1bfb | 1123 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1124 | break; |
411e1bfb | 1125 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1126 | break; |
411e1bfb | 1127 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1128 | break; |
411e1bfb | 1129 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1130 | break; |
411e1bfb | 1131 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1132 | break; |
411e1bfb | 1133 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1134 | break; |
411e1bfb | 1135 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1136 | break; |
411e1bfb | 1137 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1138 | break; |
411e1bfb | 1139 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1140 | break; |
411e1bfb | 1141 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1142 | break; |
411e1bfb | 1143 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1144 | break; |
411e1bfb | 1145 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1146 | break; |
c213164a | 1147 | case BFD_RELOC_PPC64_TLS_PCREL: |
411e1bfb | 1148 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1149 | break; |
727fc41e AM |
1150 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1151 | break; | |
1152 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1153 | break; | |
411e1bfb | 1154 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1155 | break; |
411e1bfb | 1156 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1157 | break; |
411e1bfb | 1158 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1159 | break; |
411e1bfb | 1160 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1161 | break; |
f9c6b907 AM |
1162 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1163 | break; | |
411e1bfb | 1164 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1165 | break; |
f9c6b907 AM |
1166 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1167 | break; | |
411e1bfb | 1168 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1169 | break; |
411e1bfb AM |
1170 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1171 | break; | |
1172 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1173 | break; | |
1174 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1175 | break; | |
f9c6b907 AM |
1176 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1177 | break; | |
411e1bfb AM |
1178 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1179 | break; | |
f9c6b907 AM |
1180 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1181 | break; | |
411e1bfb AM |
1182 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1183 | break; | |
1184 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1185 | break; | |
1186 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1187 | break; | |
1188 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1189 | break; | |
1190 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1191 | break; | |
1192 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1193 | break; | |
1194 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1195 | break; | |
1196 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1197 | break; | |
1198 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1199 | break; | |
1200 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1201 | break; | |
1202 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1203 | break; | |
1204 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1205 | break; | |
1206 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1207 | break; | |
1208 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1209 | break; | |
1210 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1211 | break; | |
1212 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1213 | break; | |
1214 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1215 | break; | |
1216 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1217 | break; | |
1218 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1219 | break; | |
1220 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1221 | break; | |
1222 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1223 | break; | |
1224 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1225 | break; | |
1226 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1227 | break; | |
1228 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1229 | break; | |
1230 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1231 | break; | |
1232 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1233 | break; | |
1234 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1235 | break; | |
1236 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1237 | break; | |
1238 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1239 | break; | |
25f23106 AM |
1240 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1241 | break; | |
1242 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1243 | break; | |
1244 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1245 | break; | |
1246 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1247 | break; | |
4a969973 AM |
1248 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1249 | break; | |
1250 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1251 | break; | |
1252 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1253 | break; | |
1254 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1255 | break; | |
1256 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1257 | break; | |
1258 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1259 | break; | |
7ba71655 AM |
1260 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1261 | break; | |
a680de9a PB |
1262 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1263 | break; | |
006589cf AM |
1264 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1265 | break; | |
45965137 AM |
1266 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1267 | break; | |
5663e321 AM |
1268 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1269 | break; | |
1270 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1271 | break; | |
1272 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1273 | break; | |
1274 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1275 | break; | |
1276 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1277 | break; | |
1278 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1279 | break; | |
1280 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1281 | break; | |
c213164a AM |
1282 | case BFD_RELOC_PPC64_TPREL34: r = R_PPC64_TPREL34; |
1283 | break; | |
1284 | case BFD_RELOC_PPC64_DTPREL34: r = R_PPC64_DTPREL34; | |
1285 | break; | |
87c69f97 | 1286 | case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34: r = R_PPC64_GOT_TLSGD_PCREL34; |
c213164a | 1287 | break; |
87c69f97 | 1288 | case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34: r = R_PPC64_GOT_TLSLD_PCREL34; |
c213164a | 1289 | break; |
87c69f97 | 1290 | case BFD_RELOC_PPC64_GOT_TPREL_PCREL34: r = R_PPC64_GOT_TPREL_PCREL34; |
c213164a | 1291 | break; |
87c69f97 | 1292 | case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34: r = R_PPC64_GOT_DTPREL_PCREL34; |
c213164a | 1293 | break; |
5663e321 AM |
1294 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; |
1295 | break; | |
1296 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1297 | break; | |
1298 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1299 | break; | |
1300 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1301 | break; | |
1302 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1303 | break; | |
1304 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1305 | break; | |
1306 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1307 | break; | |
1308 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1309 | break; | |
1310 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1311 | break; | |
1312 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1313 | break; | |
411e1bfb AM |
1314 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1315 | break; | |
1316 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1317 | break; |
1318 | } | |
1319 | ||
4ce794b7 | 1320 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1321 | }; |
1322 | ||
157090f7 | 1323 | static reloc_howto_type * |
87c69f97 | 1324 | ppc64_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
157090f7 AM |
1325 | { |
1326 | unsigned int i; | |
87c69f97 AM |
1327 | static char *compat_map[][2] = { |
1328 | { "R_PPC64_GOT_TLSGD34", "R_PPC64_GOT_TLSGD_PCREL34" }, | |
1329 | { "R_PPC64_GOT_TLSLD34", "R_PPC64_GOT_TLSLD_PCREL34" }, | |
1330 | { "R_PPC64_GOT_TPREL34", "R_PPC64_GOT_TPREL_PCREL34" }, | |
1331 | { "R_PPC64_GOT_DTPREL34", "R_PPC64_GOT_DTPREL_PCREL34" } | |
1332 | }; | |
157090f7 | 1333 | |
a4b6fadd | 1334 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1335 | if (ppc64_elf_howto_raw[i].name != NULL |
1336 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1337 | return &ppc64_elf_howto_raw[i]; | |
1338 | ||
87c69f97 AM |
1339 | /* Handle old names of relocations in case they were used by |
1340 | .reloc directives. | |
1341 | FIXME: Remove this soon. Mapping the reloc names is very likely | |
1342 | completely unnecessary. */ | |
1343 | for (i = 0; i < ARRAY_SIZE (compat_map); i++) | |
1344 | if (strcasecmp (compat_map[i][0], r_name) == 0) | |
1345 | { | |
1346 | _bfd_error_handler (_("warning: %s should be used rather than %s"), | |
1347 | compat_map[i][1], compat_map[i][0]); | |
1348 | return ppc64_elf_reloc_name_lookup (abfd, compat_map[i][1]); | |
1349 | } | |
1350 | ||
157090f7 AM |
1351 | return NULL; |
1352 | } | |
1353 | ||
5bd4f169 AM |
1354 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1355 | ||
f3185997 | 1356 | static bfd_boolean |
4aef7643 | 1357 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1358 | Elf_Internal_Rela *dst) |
5bd4f169 | 1359 | { |
65f38f15 AM |
1360 | unsigned int type; |
1361 | ||
ef60b7ff | 1362 | /* Initialize howto table if needed. */ |
5bd4f169 | 1363 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1364 | ppc_howto_init (); |
1365 | ||
65f38f15 | 1366 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1367 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1368 | { |
695344c0 | 1369 | /* xgettext:c-format */ |
0aa13fee | 1370 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1371 | abfd, type); |
f3185997 NC |
1372 | bfd_set_error (bfd_error_bad_value); |
1373 | return FALSE; | |
d0fb9a8d | 1374 | } |
65f38f15 | 1375 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1376 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1377 | { | |
1378 | /* xgettext:c-format */ | |
1379 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1380 | abfd, type); | |
1381 | bfd_set_error (bfd_error_bad_value); | |
1382 | return FALSE; | |
1383 | } | |
2cdcc330 | 1384 | |
f3185997 | 1385 | return TRUE; |
5bd4f169 AM |
1386 | } |
1387 | ||
04c9666a | 1388 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1389 | |
1390 | static bfd_reloc_status_type | |
4ce794b7 AM |
1391 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1392 | void *data, asection *input_section, | |
1393 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1394 | { |
a680de9a PB |
1395 | enum elf_ppc64_reloc_type r_type; |
1396 | long insn; | |
1397 | bfd_size_type octets; | |
3de43e7b | 1398 | bfd_vma value; |
a680de9a | 1399 | |
805fc799 AM |
1400 | /* If this is a relocatable link (output_bfd test tells us), just |
1401 | call the generic function. Any adjustment will be done at final | |
1402 | link time. */ | |
1403 | if (output_bfd != NULL) | |
cedb70c5 | 1404 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1405 | input_section, output_bfd, error_message); |
1406 | ||
5663e321 AM |
1407 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1408 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1409 | doesn't matter. */ |
a680de9a | 1410 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1411 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1412 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1413 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1414 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1415 | reloc_entry->addend += 1ULL << 33; | |
1416 | else | |
1417 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1418 | if (r_type != R_PPC64_REL16DX_HA) |
1419 | return bfd_reloc_continue; | |
1420 | ||
1421 | value = 0; | |
1422 | if (!bfd_is_com_section (symbol->section)) | |
1423 | value = symbol->value; | |
1424 | value += (reloc_entry->addend | |
1425 | + symbol->section->output_offset | |
1426 | + symbol->section->output_section->vma); | |
1427 | value -= (reloc_entry->address | |
1428 | + input_section->output_offset | |
1429 | + input_section->output_section->vma); | |
3de43e7b | 1430 | value = (bfd_signed_vma) value >> 16; |
a680de9a | 1431 | |
bb294208 | 1432 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
a680de9a PB |
1433 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1434 | insn &= ~0x1fffc1; | |
3de43e7b | 1435 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1436 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1437 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1438 | return bfd_reloc_overflow; |
1439 | return bfd_reloc_ok; | |
805fc799 | 1440 | } |
5bd4f169 | 1441 | |
2441e016 AM |
1442 | static bfd_reloc_status_type |
1443 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1444 | void *data, asection *input_section, | |
1445 | bfd *output_bfd, char **error_message) | |
1446 | { | |
1447 | if (output_bfd != NULL) | |
1448 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1449 | input_section, output_bfd, error_message); | |
1450 | ||
699733f6 AM |
1451 | if (strcmp (symbol->section->name, ".opd") == 0 |
1452 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1453 | { |
1454 | bfd_vma dest = opd_entry_value (symbol->section, | |
1455 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1456 | NULL, NULL, FALSE); |
2441e016 AM |
1457 | if (dest != (bfd_vma) -1) |
1458 | reloc_entry->addend = dest - (symbol->value | |
1459 | + symbol->section->output_section->vma | |
1460 | + symbol->section->output_offset); | |
1461 | } | |
810d4e75 AM |
1462 | else |
1463 | { | |
1464 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1465 | ||
1466 | if (symbol->section->owner != abfd | |
9f284bf9 | 1467 | && symbol->section->owner != NULL |
810d4e75 AM |
1468 | && abiversion (symbol->section->owner) >= 2) |
1469 | { | |
1470 | unsigned int i; | |
1471 | ||
1472 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1473 | { | |
1474 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1475 | ||
1476 | if (strcmp (symdef->name, symbol->name) == 0) | |
1477 | { | |
1478 | elfsym = (elf_symbol_type *) symdef; | |
1479 | break; | |
1480 | } | |
1481 | } | |
1482 | } | |
1483 | reloc_entry->addend | |
1484 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1485 | } | |
2441e016 AM |
1486 | return bfd_reloc_continue; |
1487 | } | |
1488 | ||
805fc799 | 1489 | static bfd_reloc_status_type |
4ce794b7 AM |
1490 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1491 | void *data, asection *input_section, | |
1492 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1493 | { |
1494 | long insn; | |
04c9666a | 1495 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1496 | bfd_size_type octets; |
794e51c0 AM |
1497 | /* Assume 'at' branch hints. */ |
1498 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1499 | |
1500 | /* If this is a relocatable link (output_bfd test tells us), just | |
1501 | call the generic function. Any adjustment will be done at final | |
1502 | link time. */ | |
5bd4f169 | 1503 | if (output_bfd != NULL) |
cedb70c5 | 1504 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1505 | input_section, output_bfd, error_message); |
1506 | ||
bb294208 | 1507 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1508 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1509 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1510 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1511 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1512 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1513 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1514 | |
794e51c0 | 1515 | if (is_isa_v2) |
5bd4f169 | 1516 | { |
805fc799 AM |
1517 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1518 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1519 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1520 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1521 | insn |= 0x02 << 21; | |
1522 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1523 | insn |= 0x08 << 21; | |
1524 | else | |
2441e016 | 1525 | goto out; |
5bd4f169 | 1526 | } |
805fc799 AM |
1527 | else |
1528 | { | |
1529 | bfd_vma target = 0; | |
1530 | bfd_vma from; | |
5bd4f169 | 1531 | |
805fc799 AM |
1532 | if (!bfd_is_com_section (symbol->section)) |
1533 | target = symbol->value; | |
1534 | target += symbol->section->output_section->vma; | |
1535 | target += symbol->section->output_offset; | |
1536 | target += reloc_entry->addend; | |
5bd4f169 | 1537 | |
805fc799 AM |
1538 | from = (reloc_entry->address |
1539 | + input_section->output_offset | |
1540 | + input_section->output_section->vma); | |
5bd4f169 | 1541 | |
805fc799 AM |
1542 | /* Invert 'y' bit if not the default. */ |
1543 | if ((bfd_signed_vma) (target - from) < 0) | |
1544 | insn ^= 0x01 << 21; | |
1545 | } | |
4ce794b7 | 1546 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1547 | out: |
1548 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1549 | input_section, output_bfd, error_message); | |
805fc799 | 1550 | } |
5bd4f169 | 1551 | |
805fc799 | 1552 | static bfd_reloc_status_type |
4ce794b7 AM |
1553 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1554 | void *data, asection *input_section, | |
1555 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1556 | { |
1557 | /* If this is a relocatable link (output_bfd test tells us), just | |
1558 | call the generic function. Any adjustment will be done at final | |
1559 | link time. */ | |
1560 | if (output_bfd != NULL) | |
cedb70c5 | 1561 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1562 | input_section, output_bfd, error_message); |
5bd4f169 | 1563 | |
805fc799 AM |
1564 | /* Subtract the symbol section base address. */ |
1565 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1566 | return bfd_reloc_continue; |
1567 | } | |
1568 | ||
805fc799 | 1569 | static bfd_reloc_status_type |
4ce794b7 AM |
1570 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1571 | void *data, asection *input_section, | |
1572 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1573 | { |
1574 | /* If this is a relocatable link (output_bfd test tells us), just | |
1575 | call the generic function. Any adjustment will be done at final | |
1576 | link time. */ | |
1577 | if (output_bfd != NULL) | |
cedb70c5 | 1578 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1579 | input_section, output_bfd, error_message); |
1580 | ||
1581 | /* Subtract the symbol section base address. */ | |
1582 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1583 | ||
1584 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1585 | reloc_entry->addend += 0x8000; | |
1586 | return bfd_reloc_continue; | |
1587 | } | |
1588 | ||
1589 | static bfd_reloc_status_type | |
4ce794b7 AM |
1590 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1591 | void *data, asection *input_section, | |
1592 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1593 | { |
1594 | bfd_vma TOCstart; | |
1595 | ||
1596 | /* If this is a relocatable link (output_bfd test tells us), just | |
1597 | call the generic function. Any adjustment will be done at final | |
1598 | link time. */ | |
1599 | if (output_bfd != NULL) | |
cedb70c5 | 1600 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1601 | input_section, output_bfd, error_message); |
1602 | ||
1603 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1604 | if (TOCstart == 0) | |
1c865ab2 | 1605 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1606 | |
1607 | /* Subtract the TOC base address. */ | |
1608 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1609 | return bfd_reloc_continue; | |
1610 | } | |
1611 | ||
1612 | static bfd_reloc_status_type | |
4ce794b7 AM |
1613 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1614 | void *data, asection *input_section, | |
1615 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1616 | { |
1617 | bfd_vma TOCstart; | |
1618 | ||
1619 | /* If this is a relocatable link (output_bfd test tells us), just | |
1620 | call the generic function. Any adjustment will be done at final | |
1621 | link time. */ | |
1622 | if (output_bfd != NULL) | |
cedb70c5 | 1623 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1624 | input_section, output_bfd, error_message); |
1625 | ||
1626 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1627 | if (TOCstart == 0) | |
1c865ab2 | 1628 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1629 | |
1630 | /* Subtract the TOC base address. */ | |
1631 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1632 | ||
1633 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1634 | reloc_entry->addend += 0x8000; | |
1635 | return bfd_reloc_continue; | |
1636 | } | |
1637 | ||
1638 | static bfd_reloc_status_type | |
4ce794b7 AM |
1639 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1640 | void *data, asection *input_section, | |
1641 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1642 | { |
1643 | bfd_vma TOCstart; | |
1644 | bfd_size_type octets; | |
1645 | ||
1646 | /* If this is a relocatable link (output_bfd test tells us), just | |
1647 | call the generic function. Any adjustment will be done at final | |
1648 | link time. */ | |
1649 | if (output_bfd != NULL) | |
cedb70c5 | 1650 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1651 | input_section, output_bfd, error_message); |
1652 | ||
1653 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1654 | if (TOCstart == 0) | |
1c865ab2 | 1655 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 | 1656 | |
bb294208 | 1657 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1658 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); |
1659 | return bfd_reloc_ok; | |
1660 | } | |
1661 | ||
5663e321 AM |
1662 | static bfd_reloc_status_type |
1663 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1664 | void *data, asection *input_section, | |
1665 | bfd *output_bfd, char **error_message) | |
1666 | { | |
1667 | uint64_t insn; | |
1668 | bfd_vma targ; | |
1669 | ||
1670 | if (output_bfd != NULL) | |
1671 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1672 | input_section, output_bfd, error_message); | |
1673 | ||
1674 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1675 | insn <<= 32; | |
1676 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1677 | ||
1678 | targ = (symbol->section->output_section->vma | |
1679 | + symbol->section->output_offset | |
1680 | + reloc_entry->addend); | |
1681 | if (!bfd_is_com_section (symbol->section)) | |
1682 | targ += symbol->value; | |
1683 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1684 | targ += 1ULL << 33; | |
1685 | if (reloc_entry->howto->pc_relative) | |
1686 | { | |
1687 | bfd_vma from = (reloc_entry->address | |
1688 | + input_section->output_offset | |
1689 | + input_section->output_section->vma); | |
1690 | targ -=from; | |
1691 | } | |
1692 | targ >>= reloc_entry->howto->rightshift; | |
1693 | insn &= ~reloc_entry->howto->dst_mask; | |
1694 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1695 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1696 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1697 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1698 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1699 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1700 | return bfd_reloc_overflow; | |
1701 | return bfd_reloc_ok; | |
1702 | } | |
1703 | ||
805fc799 | 1704 | static bfd_reloc_status_type |
4ce794b7 AM |
1705 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1706 | void *data, asection *input_section, | |
1707 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1708 | { |
1709 | /* If this is a relocatable link (output_bfd test tells us), just | |
1710 | call the generic function. Any adjustment will be done at final | |
1711 | link time. */ | |
1712 | if (output_bfd != NULL) | |
cedb70c5 | 1713 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1714 | input_section, output_bfd, error_message); |
1715 | ||
1716 | if (error_message != NULL) | |
1717 | { | |
1718 | static char buf[60]; | |
1719 | sprintf (buf, "generic linker can't handle %s", | |
1720 | reloc_entry->howto->name); | |
1721 | *error_message = buf; | |
1722 | } | |
1723 | return bfd_reloc_dangerous; | |
1724 | } | |
1725 | ||
927be08e AM |
1726 | /* Track GOT entries needed for a given symbol. We might need more |
1727 | than one got entry per symbol. */ | |
1728 | struct got_entry | |
1729 | { | |
1730 | struct got_entry *next; | |
1731 | ||
1732 | /* The symbol addend that we'll be placing in the GOT. */ | |
1733 | bfd_vma addend; | |
1734 | ||
1735 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1736 | symbol referenced from different input files. This is to support | |
1737 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1738 | from one input file to another. After partitioning into TOC groups | |
1739 | we merge entries within the group. | |
1740 | ||
1741 | Point to the BFD owning this GOT entry. */ | |
1742 | bfd *owner; | |
1743 | ||
1744 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1745 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1746 | unsigned char tls_type; |
927be08e AM |
1747 | |
1748 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1749 | unsigned char is_indirect; |
927be08e AM |
1750 | |
1751 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1752 | union | |
2cdcc330 AM |
1753 | { |
1754 | bfd_signed_vma refcount; | |
1755 | bfd_vma offset; | |
1756 | struct got_entry *ent; | |
1757 | } got; | |
927be08e AM |
1758 | }; |
1759 | ||
1760 | /* The same for PLT. */ | |
1761 | struct plt_entry | |
1762 | { | |
1763 | struct plt_entry *next; | |
1764 | ||
1765 | bfd_vma addend; | |
1766 | ||
1767 | union | |
2cdcc330 AM |
1768 | { |
1769 | bfd_signed_vma refcount; | |
1770 | bfd_vma offset; | |
1771 | } plt; | |
927be08e AM |
1772 | }; |
1773 | ||
e717da7e AM |
1774 | struct ppc64_elf_obj_tdata |
1775 | { | |
1776 | struct elf_obj_tdata elf; | |
1777 | ||
1778 | /* Shortcuts to dynamic linker sections. */ | |
1779 | asection *got; | |
1780 | asection *relgot; | |
1781 | ||
b3fac117 AM |
1782 | /* Used during garbage collection. We attach global symbols defined |
1783 | on removed .opd entries to this section so that the sym is removed. */ | |
1784 | asection *deleted_section; | |
81688140 | 1785 | |
927be08e | 1786 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1787 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1788 | struct got_entry tlsld_got; |
8860955f | 1789 | |
2cdcc330 AM |
1790 | union |
1791 | { | |
729eabd5 AM |
1792 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1793 | Elf_Internal_Rela *relocs; | |
1794 | ||
1795 | /* Section contents. */ | |
1796 | bfd_byte *contents; | |
1797 | } opd; | |
d77c8a4b AM |
1798 | |
1799 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1800 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1801 | unsigned int has_small_toc_reloc : 1; |
1802 | ||
560c8763 AM |
1803 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1804 | instruction not one we handle. */ | |
1805 | unsigned int unexpected_toc_insn : 1; | |
066f4018 | 1806 | |
903b777d AM |
1807 | /* Set if PLT/GOT/TOC relocs that can be optimised are present in |
1808 | this file. */ | |
1809 | unsigned int has_optrel : 1; | |
e717da7e AM |
1810 | }; |
1811 | ||
1812 | #define ppc64_elf_tdata(bfd) \ | |
1813 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1814 | ||
1815 | #define ppc64_tlsld_got(bfd) \ | |
1816 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1817 | ||
0c8d6e5c AM |
1818 | #define is_ppc64_elf(bfd) \ |
1819 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1820 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1821 | |
e717da7e AM |
1822 | /* Override the generic function because we store some extras. */ |
1823 | ||
1824 | static bfd_boolean | |
1825 | ppc64_elf_mkobject (bfd *abfd) | |
1826 | { | |
0ffa91dd | 1827 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1828 | PPC64_ELF_DATA); |
e717da7e AM |
1829 | } |
1830 | ||
feee612b | 1831 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1832 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1833 | |
b34976b6 | 1834 | static bfd_boolean |
4ce794b7 | 1835 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1836 | { |
14b57c7c AM |
1837 | if (!abfd->arch_info->the_default) |
1838 | return TRUE; | |
1839 | ||
1840 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1841 | { |
1842 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1843 | ||
1844 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1845 | { | |
1846 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1847 | abfd->arch_info = abfd->arch_info->next; | |
1848 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1849 | } | |
1850 | } | |
14b57c7c | 1851 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1852 | } |
1853 | ||
d37c89e5 AM |
1854 | /* Support for core dump NOTE sections. */ |
1855 | ||
1856 | static bfd_boolean | |
1857 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1858 | { | |
eea6121a | 1859 | size_t offset, size; |
d37c89e5 AM |
1860 | |
1861 | if (note->descsz != 504) | |
1862 | return FALSE; | |
1863 | ||
1864 | /* pr_cursig */ | |
228e534f | 1865 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1866 | |
1867 | /* pr_pid */ | |
228e534f | 1868 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1869 | |
1870 | /* pr_reg */ | |
1871 | offset = 112; | |
eea6121a | 1872 | size = 384; |
d37c89e5 AM |
1873 | |
1874 | /* Make a ".reg/999" section. */ | |
1875 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1876 | size, note->descpos + offset); |
d37c89e5 AM |
1877 | } |
1878 | ||
1879 | static bfd_boolean | |
1880 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1881 | { | |
1882 | if (note->descsz != 136) | |
1883 | return FALSE; | |
1884 | ||
228e534f | 1885 | elf_tdata (abfd)->core->pid |
bc989cdc | 1886 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1887 | elf_tdata (abfd)->core->program |
d37c89e5 | 1888 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1889 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1890 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1891 | ||
1892 | return TRUE; | |
1893 | } | |
1894 | ||
183e98be AM |
1895 | static char * |
1896 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1897 | ...) | |
1898 | { | |
1899 | switch (note_type) | |
1900 | { | |
1901 | default: | |
1902 | return NULL; | |
1903 | ||
1904 | case NT_PRPSINFO: | |
1905 | { | |
9ef6d1e3 | 1906 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1907 | va_list ap; |
1908 | ||
1909 | va_start (ap, note_type); | |
75cd47ed | 1910 | memset (data, 0, sizeof (data)); |
183e98be | 1911 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1912 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1913 | DIAGNOSTIC_PUSH; |
be3e27bb | 1914 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1915 | -Wstringop-truncation: |
1916 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1917 | */ | |
95da9854 L |
1918 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1919 | #endif | |
183e98be | 1920 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1921 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1922 | DIAGNOSTIC_POP; |
fe75810f | 1923 | #endif |
183e98be AM |
1924 | va_end (ap); |
1925 | return elfcore_write_note (abfd, buf, bufsiz, | |
1926 | "CORE", note_type, data, sizeof (data)); | |
1927 | } | |
1928 | ||
1929 | case NT_PRSTATUS: | |
1930 | { | |
1931 | char data[504]; | |
1932 | va_list ap; | |
1933 | long pid; | |
1934 | int cursig; | |
1935 | const void *greg; | |
1936 | ||
1937 | va_start (ap, note_type); | |
1938 | memset (data, 0, 112); | |
1939 | pid = va_arg (ap, long); | |
1940 | bfd_put_32 (abfd, pid, data + 32); | |
1941 | cursig = va_arg (ap, int); | |
1942 | bfd_put_16 (abfd, cursig, data + 12); | |
1943 | greg = va_arg (ap, const void *); | |
1944 | memcpy (data + 112, greg, 384); | |
1945 | memset (data + 496, 0, 8); | |
1946 | va_end (ap); | |
1947 | return elfcore_write_note (abfd, buf, bufsiz, | |
1948 | "CORE", note_type, data, sizeof (data)); | |
1949 | } | |
1950 | } | |
1951 | } | |
1952 | ||
5d35169e AM |
1953 | /* Add extra PPC sections. */ |
1954 | ||
2cdcc330 | 1955 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1956 | { |
07d6d2b8 AM |
1957 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1958 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1959 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1960 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1961 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1962 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1963 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1964 | }; |
1965 | ||
7c8fe5c4 AM |
1966 | enum _ppc64_sec_type { |
1967 | sec_normal = 0, | |
1968 | sec_opd = 1, | |
1969 | sec_toc = 2 | |
1970 | }; | |
1971 | ||
f0abc2a1 AM |
1972 | struct _ppc64_elf_section_data |
1973 | { | |
1974 | struct bfd_elf_section_data elf; | |
411e1bfb | 1975 | |
f0abc2a1 AM |
1976 | union |
1977 | { | |
51aecdc5 AM |
1978 | /* An array with one entry for each opd function descriptor, |
1979 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1980 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1981 | struct _opd_sec_data |
1982 | { | |
1983 | /* Points to the function code section for local opd entries. */ | |
1984 | asection **func_sec; | |
1985 | ||
1986 | /* After editing .opd, adjust references to opd local syms. */ | |
1987 | long *adjust; | |
1988 | } opd; | |
7c8fe5c4 | 1989 | |
3a71aa26 AM |
1990 | /* An array for toc sections, indexed by offset/8. */ |
1991 | struct _toc_sec_data | |
1992 | { | |
1993 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1994 | unsigned *symndx; | |
1995 | ||
1996 | /* And the relocation addend. */ | |
1997 | bfd_vma *add; | |
1998 | } toc; | |
7c8fe5c4 AM |
1999 | } u; |
2000 | ||
2001 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2002 | |
7c8fe5c4 AM |
2003 | /* Flag set when small branches are detected. Used to |
2004 | select suitable defaults for the stub group size. */ | |
2005 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
2006 | |
2007 | /* Flag set when PLTCALL relocs are detected. */ | |
2008 | unsigned int has_pltcall:1; | |
066f4018 | 2009 | |
903b777d AM |
2010 | /* Flag set when section has PLT/GOT/TOC relocations that can be |
2011 | optimised. */ | |
2012 | unsigned int has_optrel:1; | |
f0abc2a1 AM |
2013 | }; |
2014 | ||
2015 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2016 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2017 | |
2018 | static bfd_boolean | |
4ce794b7 | 2019 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2020 | { |
f592407e AM |
2021 | if (!sec->used_by_bfd) |
2022 | { | |
2023 | struct _ppc64_elf_section_data *sdata; | |
986f0783 | 2024 | size_t amt = sizeof (*sdata); |
f0abc2a1 | 2025 | |
f592407e AM |
2026 | sdata = bfd_zalloc (abfd, amt); |
2027 | if (sdata == NULL) | |
2028 | return FALSE; | |
2029 | sec->used_by_bfd = sdata; | |
2030 | } | |
f0abc2a1 AM |
2031 | |
2032 | return _bfd_elf_new_section_hook (abfd, sec); | |
2033 | } | |
4025353c | 2034 | |
bf577467 AM |
2035 | static bfd_boolean |
2036 | ppc64_elf_section_flags (const Elf_Internal_Shdr *hdr) | |
2037 | { | |
2038 | const char *name = hdr->bfd_section->name; | |
2039 | ||
2040 | if (strncmp (name, ".sbss", 5) == 0 | |
2041 | || strncmp (name, ".sdata", 6) == 0) | |
2042 | hdr->bfd_section->flags |= SEC_SMALL_DATA; | |
2043 | ||
2044 | return TRUE; | |
2045 | } | |
2046 | ||
74f0fb50 | 2047 | static struct _opd_sec_data * |
4025353c AM |
2048 | get_opd_info (asection * sec) |
2049 | { | |
2050 | if (sec != NULL | |
2051 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2052 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2053 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2054 | return NULL; |
2055 | } | |
90e3cdf2 JJ |
2056 | \f |
2057 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 2058 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 2059 | static asection *synthetic_opd; |
90e3cdf2 | 2060 | |
699733f6 | 2061 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2062 | |
2063 | static int | |
2064 | compare_symbols (const void *ap, const void *bp) | |
2065 | { | |
2cdcc330 AM |
2066 | const asymbol *a = *(const asymbol **) ap; |
2067 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 2068 | |
699733f6 AM |
2069 | /* Section symbols first. */ |
2070 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2071 | return -1; |
699733f6 | 2072 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2073 | return 1; |
2074 | ||
699733f6 | 2075 | /* then .opd symbols. */ |
cd285db5 AM |
2076 | if (synthetic_opd != NULL) |
2077 | { | |
2078 | if (strcmp (a->section->name, ".opd") == 0 | |
2079 | && strcmp (b->section->name, ".opd") != 0) | |
2080 | return -1; | |
2081 | if (strcmp (a->section->name, ".opd") != 0 | |
2082 | && strcmp (b->section->name, ".opd") == 0) | |
2083 | return 1; | |
2084 | } | |
90e3cdf2 | 2085 | |
699733f6 | 2086 | /* then other code symbols. */ |
2cdcc330 AM |
2087 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2088 | == (SEC_CODE | SEC_ALLOC)) | |
2089 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2090 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2091 | return -1; |
2092 | ||
2cdcc330 AM |
2093 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2094 | != (SEC_CODE | SEC_ALLOC)) | |
2095 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2096 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2097 | return 1; |
2098 | ||
2099 | if (synthetic_relocatable) | |
2100 | { | |
2101 | if (a->section->id < b->section->id) | |
2102 | return -1; | |
2103 | ||
2104 | if (a->section->id > b->section->id) | |
2105 | return 1; | |
2106 | } | |
2107 | ||
2108 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2109 | return -1; | |
2110 | ||
2111 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2112 | return 1; | |
2113 | ||
4d35a0aa AM |
2114 | /* For syms with the same value, prefer strong dynamic global function |
2115 | syms over other syms. */ | |
2116 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2117 | return -1; | |
2118 | ||
2119 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2120 | return 1; | |
2121 | ||
2122 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2123 | return -1; | |
2124 | ||
2125 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2126 | return 1; | |
2127 | ||
2128 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2129 | return -1; | |
2130 | ||
2131 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2132 | return 1; | |
2133 | ||
2134 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2135 | return -1; | |
2136 | ||
2137 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2138 | return 1; | |
2139 | ||
dcea6a95 AM |
2140 | /* Finally, sort on where the symbol is in memory. The symbols will |
2141 | be in at most two malloc'd blocks, one for static syms, one for | |
2142 | dynamic syms, and we distinguish the two blocks above by testing | |
2143 | BSF_DYNAMIC. Since we are sorting the symbol pointers which were | |
2144 | originally in the same order as the symbols (and we're not | |
2145 | sorting the symbols themselves), this ensures a stable sort. */ | |
2146 | if (a < b) | |
2147 | return -1; | |
2148 | if (a > b) | |
2149 | return 1; | |
2150 | return 0; | |
90e3cdf2 JJ |
2151 | } |
2152 | ||
699733f6 | 2153 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2154 | |
699733f6 | 2155 | static asymbol * |
9ad9b810 AM |
2156 | sym_exists_at (asymbol **syms, size_t lo, size_t hi, unsigned int id, |
2157 | bfd_vma value) | |
90e3cdf2 | 2158 | { |
9ad9b810 | 2159 | size_t mid; |
90e3cdf2 | 2160 | |
7292b3ac | 2161 | if (id == (unsigned) -1) |
699733f6 AM |
2162 | { |
2163 | while (lo < hi) | |
2164 | { | |
2165 | mid = (lo + hi) >> 1; | |
2166 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2167 | lo = mid + 1; | |
2168 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2169 | hi = mid; | |
2170 | else | |
2171 | return syms[mid]; | |
2172 | } | |
2173 | } | |
2174 | else | |
2175 | { | |
2176 | while (lo < hi) | |
2177 | { | |
2178 | mid = (lo + hi) >> 1; | |
2179 | if (syms[mid]->section->id < id) | |
2180 | lo = mid + 1; | |
2181 | else if (syms[mid]->section->id > id) | |
2182 | hi = mid; | |
2183 | else if (syms[mid]->value < value) | |
2184 | lo = mid + 1; | |
2185 | else if (syms[mid]->value > value) | |
2186 | hi = mid; | |
2187 | else | |
2188 | return syms[mid]; | |
2189 | } | |
2190 | } | |
2191 | return NULL; | |
90e3cdf2 JJ |
2192 | } |
2193 | ||
468392fb AM |
2194 | static bfd_boolean |
2195 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2196 | { | |
2197 | bfd_vma vma = *(bfd_vma *) ptr; | |
2198 | return ((section->flags & SEC_ALLOC) != 0 | |
2199 | && section->vma <= vma | |
2200 | && vma < section->vma + section->size); | |
2201 | } | |
2202 | ||
699733f6 | 2203 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2204 | entry syms. Also generate @plt symbols for the glink branch table. |
2205 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2206 | |
2207 | static long | |
a7535cf3 AM |
2208 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2209 | long static_count, asymbol **static_syms, | |
2210 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2211 | asymbol **ret) |
90e3cdf2 JJ |
2212 | { |
2213 | asymbol *s; | |
0ccf57bd | 2214 | size_t i, j, count; |
90e3cdf2 | 2215 | char *names; |
0ccf57bd | 2216 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2217 | asection *opd = NULL; |
90e3cdf2 | 2218 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2219 | asymbol **syms; |
ee67d69a | 2220 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2221 | |
2222 | *ret = NULL; | |
2223 | ||
ee67d69a AM |
2224 | if (abi < 2) |
2225 | { | |
2226 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2227 | if (opd == NULL && abi == 1) | |
2228 | return 0; | |
2229 | } | |
90e3cdf2 | 2230 | |
a5259595 AM |
2231 | syms = NULL; |
2232 | codesecsym = 0; | |
2233 | codesecsymend = 0; | |
2234 | secsymend = 0; | |
2235 | opdsymend = 0; | |
2236 | symcount = 0; | |
2237 | if (opd != NULL) | |
c9727e01 | 2238 | { |
a5259595 AM |
2239 | symcount = static_count; |
2240 | if (!relocatable) | |
2241 | symcount += dyn_count; | |
2242 | if (symcount == 0) | |
2243 | return 0; | |
c9727e01 | 2244 | |
a5259595 AM |
2245 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2246 | if (syms == NULL) | |
2247 | return -1; | |
90e3cdf2 | 2248 | |
a5259595 AM |
2249 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2250 | { | |
2251 | /* Use both symbol tables. */ | |
2252 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2253 | memcpy (syms + static_count, dyn_syms, | |
2254 | (dyn_count + 1) * sizeof (*syms)); | |
2255 | } | |
2256 | else if (!relocatable && static_count == 0) | |
2257 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2258 | else | |
2259 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2260 | |
0ccf57bd AM |
2261 | /* Trim uninteresting symbols. Interesting symbols are section, |
2262 | function, and notype symbols. */ | |
2263 | for (i = 0, j = 0; i < symcount; ++i) | |
2264 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2265 | | BSF_RELC | BSF_SRELC)) == 0) | |
2266 | syms[j++] = syms[i]; | |
2267 | symcount = j; | |
2268 | ||
a5259595 AM |
2269 | synthetic_relocatable = relocatable; |
2270 | synthetic_opd = opd; | |
2271 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2272 | |
a5259595 AM |
2273 | if (!relocatable && symcount > 1) |
2274 | { | |
bfa5bd2a PA |
2275 | /* Trim duplicate syms, since we may have merged the normal |
2276 | and dynamic symbols. Actually, we only care about syms | |
2277 | that have different values, so trim any with the same | |
2278 | value. Don't consider ifunc and ifunc resolver symbols | |
2279 | duplicates however, because GDB wants to know whether a | |
2280 | text symbol is an ifunc resolver. */ | |
a5259595 | 2281 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2282 | { |
2283 | const asymbol *s0 = syms[i - 1]; | |
2284 | const asymbol *s1 = syms[i]; | |
2285 | ||
2286 | if ((s0->value + s0->section->vma | |
2287 | != s1->value + s1->section->vma) | |
2288 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2289 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2290 | syms[j++] = syms[i]; | |
2291 | } | |
a5259595 AM |
2292 | symcount = j; |
2293 | } | |
699733f6 | 2294 | |
a5259595 AM |
2295 | i = 0; |
2296 | /* Note that here and in compare_symbols we can't compare opd and | |
2297 | sym->section directly. With separate debug info files, the | |
2298 | symbols will be extracted from the debug file while abfd passed | |
2299 | to this function is the real binary. */ | |
0ccf57bd | 2300 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2301 | ++i; |
2302 | codesecsym = i; | |
2303 | ||
2304 | for (; i < symcount; ++i) | |
2305 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2306 | | SEC_THREAD_LOCAL)) | |
2307 | != (SEC_CODE | SEC_ALLOC)) | |
2308 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2309 | break; | |
2310 | codesecsymend = i; | |
2311 | ||
2312 | for (; i < symcount; ++i) | |
2313 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2314 | break; | |
2315 | secsymend = i; | |
2316 | ||
2317 | for (; i < symcount; ++i) | |
2318 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2319 | break; | |
2320 | opdsymend = i; | |
2321 | ||
2322 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2323 | if (((syms[i]->section->flags |
2324 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2325 | != (SEC_CODE | SEC_ALLOC)) |
2326 | break; | |
2327 | symcount = i; | |
2328 | } | |
c9727e01 | 2329 | count = 0; |
90e3cdf2 | 2330 | |
699733f6 | 2331 | if (relocatable) |
90e3cdf2 | 2332 | { |
699733f6 AM |
2333 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2334 | arelent *r; | |
2335 | size_t size; | |
0ccf57bd | 2336 | size_t relcount; |
90e3cdf2 | 2337 | |
468392fb AM |
2338 | if (opdsymend == secsymend) |
2339 | goto done; | |
2340 | ||
699733f6 | 2341 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2342 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2343 | if (relcount == 0) |
c9727e01 | 2344 | goto done; |
90e3cdf2 | 2345 | |
7356fed5 AM |
2346 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2347 | { | |
2348 | count = -1; | |
2349 | goto done; | |
2350 | } | |
2351 | ||
699733f6 | 2352 | size = 0; |
595da8c5 | 2353 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2354 | { |
2355 | asymbol *sym; | |
90e3cdf2 | 2356 | |
595da8c5 | 2357 | while (r < opd->relocation + relcount |
699733f6 AM |
2358 | && r->address < syms[i]->value + opd->vma) |
2359 | ++r; | |
90e3cdf2 | 2360 | |
595da8c5 | 2361 | if (r == opd->relocation + relcount) |
699733f6 | 2362 | break; |
90e3cdf2 | 2363 | |
699733f6 AM |
2364 | if (r->address != syms[i]->value + opd->vma) |
2365 | continue; | |
90e3cdf2 | 2366 | |
699733f6 AM |
2367 | if (r->howto->type != R_PPC64_ADDR64) |
2368 | continue; | |
90e3cdf2 | 2369 | |
699733f6 AM |
2370 | sym = *r->sym_ptr_ptr; |
2371 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2372 | sym->section->id, sym->value + r->addend)) | |
2373 | { | |
2374 | ++count; | |
2375 | size += sizeof (asymbol); | |
2376 | size += strlen (syms[i]->name) + 2; | |
2377 | } | |
2378 | } | |
90e3cdf2 | 2379 | |
c4b0b099 AM |
2380 | if (size == 0) |
2381 | goto done; | |
699733f6 AM |
2382 | s = *ret = bfd_malloc (size); |
2383 | if (s == NULL) | |
2384 | { | |
7356fed5 | 2385 | count = -1; |
c9727e01 | 2386 | goto done; |
699733f6 | 2387 | } |
90e3cdf2 | 2388 | |
699733f6 | 2389 | names = (char *) (s + count); |
90e3cdf2 | 2390 | |
595da8c5 | 2391 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2392 | { |
699733f6 | 2393 | asymbol *sym; |
90e3cdf2 | 2394 | |
595da8c5 | 2395 | while (r < opd->relocation + relcount |
699733f6 AM |
2396 | && r->address < syms[i]->value + opd->vma) |
2397 | ++r; | |
90e3cdf2 | 2398 | |
595da8c5 | 2399 | if (r == opd->relocation + relcount) |
699733f6 AM |
2400 | break; |
2401 | ||
2402 | if (r->address != syms[i]->value + opd->vma) | |
2403 | continue; | |
2404 | ||
2405 | if (r->howto->type != R_PPC64_ADDR64) | |
2406 | continue; | |
90e3cdf2 | 2407 | |
699733f6 AM |
2408 | sym = *r->sym_ptr_ptr; |
2409 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2410 | sym->section->id, sym->value + r->addend)) | |
2411 | { | |
2412 | size_t len; | |
2413 | ||
2414 | *s = *syms[i]; | |
6ba2a415 | 2415 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2416 | s->section = sym->section; |
2417 | s->value = sym->value + r->addend; | |
2418 | s->name = names; | |
2419 | *names++ = '.'; | |
2420 | len = strlen (syms[i]->name); | |
2421 | memcpy (names, syms[i]->name, len + 1); | |
2422 | names += len + 1; | |
6f610d07 UW |
2423 | /* Have udata.p point back to the original symbol this |
2424 | synthetic symbol was derived from. */ | |
2425 | s->udata.p = syms[i]; | |
699733f6 AM |
2426 | s++; |
2427 | } | |
2428 | } | |
2429 | } | |
2430 | else | |
90e3cdf2 | 2431 | { |
468392fb | 2432 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2433 | bfd_byte *contents = NULL; |
699733f6 | 2434 | size_t size; |
0ccf57bd | 2435 | size_t plt_count = 0; |
468392fb AM |
2436 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2437 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2438 | arelent *p; | |
90e3cdf2 | 2439 | |
ee67d69a | 2440 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2441 | { |
c4b0b099 AM |
2442 | free_contents_and_exit_err: |
2443 | count = -1; | |
ee67d69a | 2444 | free_contents_and_exit: |
c9594989 | 2445 | free (contents); |
c9727e01 | 2446 | goto done; |
699733f6 | 2447 | } |
90e3cdf2 | 2448 | |
699733f6 AM |
2449 | size = 0; |
2450 | for (i = secsymend; i < opdsymend; ++i) | |
2451 | { | |
2452 | bfd_vma ent; | |
90e3cdf2 | 2453 | |
5ef11c02 AM |
2454 | /* Ignore bogus symbols. */ |
2455 | if (syms[i]->value > opd->size - 8) | |
2456 | continue; | |
2457 | ||
699733f6 AM |
2458 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2459 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2460 | { | |
2461 | ++count; | |
2462 | size += sizeof (asymbol); | |
2463 | size += strlen (syms[i]->name) + 2; | |
2464 | } | |
2465 | } | |
90e3cdf2 | 2466 | |
468392fb | 2467 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2468 | if (dyn_count != 0 |
2469 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2470 | { |
2471 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2472 | size_t extdynsize; | |
2473 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2474 | ||
2475 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2476 | goto free_contents_and_exit_err; |
468392fb AM |
2477 | |
2478 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2479 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2480 | ||
2481 | extdyn = dynbuf; | |
2482 | extdynend = extdyn + dynamic->size; | |
2483 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2484 | { | |
2485 | Elf_Internal_Dyn dyn; | |
2486 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2487 | ||
2488 | if (dyn.d_tag == DT_NULL) | |
2489 | break; | |
2490 | ||
2491 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2492 | { | |
9e390558 AM |
2493 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2494 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2495 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2496 | /* The .glink section usually does not survive the final |
2497 | link; search for the section (usually .text) where the | |
2498 | glink stubs now reside. */ | |
2499 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2500 | &glink_vma); | |
2501 | break; | |
2502 | } | |
2503 | } | |
2504 | ||
2505 | free (dynbuf); | |
2506 | } | |
2507 | ||
2508 | if (glink != NULL) | |
2509 | { | |
2510 | /* Determine __glink trampoline by reading the relative branch | |
2511 | from the first glink stub. */ | |
2512 | bfd_byte buf[4]; | |
b9e5796b AM |
2513 | unsigned int off = 0; |
2514 | ||
2515 | while (bfd_get_section_contents (abfd, glink, buf, | |
2516 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2517 | { |
2518 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2519 | insn ^= B_DOT; | |
2520 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2521 | { |
2cdcc330 AM |
2522 | resolv_vma |
2523 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2524 | break; |
2525 | } | |
2526 | off += 4; | |
2527 | if (off > 4) | |
2528 | break; | |
468392fb AM |
2529 | } |
2530 | ||
2531 | if (resolv_vma) | |
2532 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2533 | |
066ee829 AM |
2534 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2535 | if (relplt != NULL) | |
2536 | { | |
2537 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2538 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2539 | goto free_contents_and_exit_err; |
68ffbac6 | 2540 | |
066ee829 AM |
2541 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2542 | size += plt_count * sizeof (asymbol); | |
468392fb | 2543 | |
066ee829 AM |
2544 | p = relplt->relocation; |
2545 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2546 | { |
2547 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2548 | if (p->addend != 0) | |
2549 | size += sizeof ("+0x") - 1 + 16; | |
2550 | } | |
066ee829 | 2551 | } |
468392fb AM |
2552 | } |
2553 | ||
c4b0b099 AM |
2554 | if (size == 0) |
2555 | goto free_contents_and_exit; | |
699733f6 AM |
2556 | s = *ret = bfd_malloc (size); |
2557 | if (s == NULL) | |
c4b0b099 | 2558 | goto free_contents_and_exit_err; |
90e3cdf2 | 2559 | |
468392fb | 2560 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2561 | |
699733f6 | 2562 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2563 | { |
699733f6 | 2564 | bfd_vma ent; |
90e3cdf2 | 2565 | |
5ef11c02 AM |
2566 | if (syms[i]->value > opd->size - 8) |
2567 | continue; | |
2568 | ||
699733f6 AM |
2569 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2570 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2571 | { |
0ccf57bd | 2572 | size_t lo, hi; |
699733f6 | 2573 | size_t len; |
c9727e01 | 2574 | asection *sec = abfd->sections; |
90e3cdf2 | 2575 | |
699733f6 AM |
2576 | *s = *syms[i]; |
2577 | lo = codesecsym; | |
2578 | hi = codesecsymend; | |
2579 | while (lo < hi) | |
2580 | { | |
0ccf57bd | 2581 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2582 | if (syms[mid]->section->vma < ent) |
2583 | lo = mid + 1; | |
2584 | else if (syms[mid]->section->vma > ent) | |
2585 | hi = mid; | |
2586 | else | |
c9727e01 AM |
2587 | { |
2588 | sec = syms[mid]->section; | |
2589 | break; | |
2590 | } | |
699733f6 AM |
2591 | } |
2592 | ||
c9727e01 | 2593 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2594 | sec = syms[lo - 1]->section; |
699733f6 AM |
2595 | |
2596 | for (; sec != NULL; sec = sec->next) | |
2597 | { | |
2598 | if (sec->vma > ent) | |
2599 | break; | |
63524580 JK |
2600 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2601 | info file. */ | |
2602 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2603 | break; |
2604 | if ((sec->flags & SEC_CODE) != 0) | |
2605 | s->section = sec; | |
2606 | } | |
6ba2a415 | 2607 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2608 | s->value = ent - s->section->vma; |
2609 | s->name = names; | |
2610 | *names++ = '.'; | |
2611 | len = strlen (syms[i]->name); | |
2612 | memcpy (names, syms[i]->name, len + 1); | |
2613 | names += len + 1; | |
6f610d07 UW |
2614 | /* Have udata.p point back to the original symbol this |
2615 | synthetic symbol was derived from. */ | |
2616 | s->udata.p = syms[i]; | |
699733f6 | 2617 | s++; |
90e3cdf2 | 2618 | } |
90e3cdf2 | 2619 | } |
699733f6 | 2620 | free (contents); |
468392fb AM |
2621 | |
2622 | if (glink != NULL && relplt != NULL) | |
2623 | { | |
2624 | if (resolv_vma) | |
2625 | { | |
2626 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2627 | memset (s, 0, sizeof *s); |
468392fb | 2628 | s->the_bfd = abfd; |
6ba2a415 | 2629 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2630 | s->section = glink; |
2631 | s->value = resolv_vma - glink->vma; | |
2632 | s->name = names; | |
2cdcc330 AM |
2633 | memcpy (names, "__glink_PLTresolve", |
2634 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2635 | names += sizeof ("__glink_PLTresolve"); |
2636 | s++; | |
2637 | count++; | |
2638 | } | |
2639 | ||
2640 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2641 | stub rather than on the glink branch table entry. The | |
2642 | objdump disassembler would then use a sensible symbol | |
2643 | name on plt calls. The difficulty in doing so is | |
2644 | a) finding the stubs, and, | |
2645 | b) matching stubs against plt entries, and, | |
2646 | c) there can be multiple stubs for a given plt entry. | |
2647 | ||
2648 | Solving (a) could be done by code scanning, but older | |
2649 | ppc64 binaries used different stubs to current code. | |
2650 | (b) is the tricky one since you need to known the toc | |
2651 | pointer for at least one function that uses a pic stub to | |
2652 | be able to calculate the plt address referenced. | |
2653 | (c) means gdb would need to set multiple breakpoints (or | |
2654 | find the glink branch itself) when setting breakpoints | |
2655 | for pending shared library loads. */ | |
2656 | p = relplt->relocation; | |
2657 | for (i = 0; i < plt_count; i++, p++) | |
2658 | { | |
2659 | size_t len; | |
2660 | ||
2661 | *s = **p->sym_ptr_ptr; | |
2662 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2663 | we are defining a symbol, ensure one of them is set. */ | |
2664 | if ((s->flags & BSF_LOCAL) == 0) | |
2665 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2666 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2667 | s->section = glink; |
2668 | s->value = glink_vma - glink->vma; | |
2669 | s->name = names; | |
2670 | s->udata.p = NULL; | |
2671 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2672 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2673 | names += len; | |
e054468f AM |
2674 | if (p->addend != 0) |
2675 | { | |
2676 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2677 | names += sizeof ("+0x") - 1; | |
2678 | bfd_sprintf_vma (abfd, names, p->addend); | |
2679 | names += strlen (names); | |
2680 | } | |
468392fb AM |
2681 | memcpy (names, "@plt", sizeof ("@plt")); |
2682 | names += sizeof ("@plt"); | |
2683 | s++; | |
b9e5796b AM |
2684 | if (abi < 2) |
2685 | { | |
2686 | glink_vma += 8; | |
2687 | if (i >= 0x8000) | |
2688 | glink_vma += 4; | |
2689 | } | |
2690 | else | |
468392fb AM |
2691 | glink_vma += 4; |
2692 | } | |
2693 | count += plt_count; | |
2694 | } | |
90e3cdf2 JJ |
2695 | } |
2696 | ||
c9727e01 | 2697 | done: |
a7535cf3 | 2698 | free (syms); |
90e3cdf2 JJ |
2699 | return count; |
2700 | } | |
5bd4f169 | 2701 | \f |
65f38f15 AM |
2702 | /* The following functions are specific to the ELF linker, while |
2703 | functions above are used generally. Those named ppc64_elf_* are | |
2704 | called by the main ELF linker code. They appear in this file more | |
2705 | or less in the order in which they are called. eg. | |
2706 | ppc64_elf_check_relocs is called early in the link process, | |
2707 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2708 | called. |
2709 | ||
2710 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2711 | functions have both a function code symbol and a function descriptor | |
2712 | symbol. A call to foo in a relocatable object file looks like: | |
2713 | ||
2714 | . .text | |
2715 | . x: | |
2716 | . bl .foo | |
2717 | . nop | |
2718 | ||
2719 | The function definition in another object file might be: | |
2720 | ||
2721 | . .section .opd | |
2722 | . foo: .quad .foo | |
2723 | . .quad .TOC.@tocbase | |
2724 | . .quad 0 | |
2725 | . | |
2726 | . .text | |
2727 | . .foo: blr | |
2728 | ||
2729 | When the linker resolves the call during a static link, the branch | |
2730 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2731 | If the function definition is in a shared library, things are a little | |
2732 | different: The call goes via a plt call stub, the opd information gets | |
2733 | copied to the plt, and the linker patches the nop. | |
2734 | ||
2735 | . x: | |
2736 | . bl .foo_stub | |
2737 | . ld 2,40(1) | |
2738 | . | |
2739 | . | |
2740 | . .foo_stub: | |
71a39c98 AM |
2741 | . std 2,40(1) # in practice, the call stub |
2742 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2743 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2744 | . ld 12,0(11) | |
2745 | . ld 2,8(11) | |
2746 | . mtctr 12 | |
2747 | . ld 11,16(11) | |
e86ce104 AM |
2748 | . bctr |
2749 | . | |
2750 | . .section .plt | |
2751 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2752 | ||
2753 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2754 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2755 | copying. | |
2756 | ||
2757 | What are the difficulties here? Well, firstly, the relocations | |
2758 | examined by the linker in check_relocs are against the function code | |
2759 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2760 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2761 | to carefully copy dynamic link information from one symbol to the other. | |
2762 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2763 | symbol as is normal for most other backends. We need foo dynamic | |
2764 | instead, at least for an application final link. However, when | |
2765 | creating a shared library containing foo, we need to have both symbols | |
2766 | dynamic so that references to .foo are satisfied during the early | |
2767 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2768 | definition from some other object, eg. a static library. |
2769 | ||
2770 | Update: As of August 2004, we support a new convention. Function | |
2771 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2772 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2773 | |
7c8bbca5 AM |
2774 | /* Of those relocs that might be copied as dynamic relocs, this |
2775 | function selects those that must be copied when linking a shared | |
2776 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2777 | |
1d483afe AM |
2778 | static int |
2779 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2780 | enum elf_ppc64_reloc_type r_type) | |
2781 | { | |
2782 | switch (r_type) | |
2783 | { | |
2784 | default: | |
7c8bbca5 AM |
2785 | /* Only relative relocs can be resolved when the object load |
2786 | address isn't fixed. DTPREL64 is excluded because the | |
2787 | dynamic linker needs to differentiate global dynamic from | |
2788 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2789 | return 1; |
2790 | ||
2791 | case R_PPC64_REL32: | |
2792 | case R_PPC64_REL64: | |
2793 | case R_PPC64_REL30: | |
1bdd8fac AM |
2794 | case R_PPC64_TOC16: |
2795 | case R_PPC64_TOC16_DS: | |
2796 | case R_PPC64_TOC16_LO: | |
2797 | case R_PPC64_TOC16_HI: | |
2798 | case R_PPC64_TOC16_HA: | |
2799 | case R_PPC64_TOC16_LO_DS: | |
1d483afe AM |
2800 | return 0; |
2801 | ||
2802 | case R_PPC64_TPREL16: | |
2803 | case R_PPC64_TPREL16_LO: | |
2804 | case R_PPC64_TPREL16_HI: | |
2805 | case R_PPC64_TPREL16_HA: | |
2806 | case R_PPC64_TPREL16_DS: | |
2807 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2808 | case R_PPC64_TPREL16_HIGH: |
2809 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2810 | case R_PPC64_TPREL16_HIGHER: |
2811 | case R_PPC64_TPREL16_HIGHERA: | |
2812 | case R_PPC64_TPREL16_HIGHEST: | |
2813 | case R_PPC64_TPREL16_HIGHESTA: | |
2814 | case R_PPC64_TPREL64: | |
c213164a | 2815 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
2816 | /* These relocations are relative but in a shared library the |
2817 | linker doesn't know the thread pointer base. */ | |
2818 | return bfd_link_dll (info); | |
1d483afe AM |
2819 | } |
2820 | } | |
65f38f15 | 2821 | |
f4656909 | 2822 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
e1c6cf61 | 2823 | copying dynamic variables from a shared lib into an app's .dynbss |
f4656909 | 2824 | section, and instead use a dynamic relocation to point into the |
e1c6cf61 AM |
2825 | shared lib. With code that gcc generates it is vital that this be |
2826 | enabled; In the PowerPC64 ELFv1 ABI the address of a function is | |
2827 | actually the address of a function descriptor which resides in the | |
2828 | .opd section. gcc uses the descriptor directly rather than going | |
2829 | via the GOT as some other ABIs do, which means that initialized | |
2830 | function pointers reference the descriptor. Thus, a function | |
2831 | pointer initialized to the address of a function in a shared | |
2832 | library will either require a .dynbss copy and a copy reloc, or a | |
2833 | dynamic reloc. Using a .dynbss copy redefines the function | |
2834 | descriptor symbol to point to the copy. This presents a problem as | |
2835 | a PLT entry for that function is also initialized from the function | |
2836 | descriptor symbol and the copy may not be initialized first. */ | |
a23b6845 | 2837 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2838 | |
721956f4 | 2839 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2840 | string. */ |
2841 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2842 | |
2843 | /* Linker stubs. | |
2844 | ppc_stub_long_branch: | |
2845 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2846 | destination, but a 24 bit branch in a stub section will reach. | |
2847 | . b dest | |
2848 | ||
2849 | ppc_stub_plt_branch: | |
2850 | Similar to the above, but a 24 bit branch in the stub section won't | |
2851 | reach its destination. | |
6df4c9c2 AM |
2852 | . addis %r12,%r2,xxx@toc@ha |
2853 | . ld %r12,xxx@toc@l(%r12) | |
71a39c98 | 2854 | . mtctr %r12 |
721956f4 AM |
2855 | . bctr |
2856 | ||
2857 | ppc_stub_plt_call: | |
2c66dc6c AM |
2858 | Used to call a function in a shared library. If it so happens that |
2859 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2860 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2861 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2862 | . addis %r11,%r2,xxx@toc@ha |
2863 | . ld %r12,xxx+0@toc@l(%r11) | |
2864 | . mtctr %r12 | |
2865 | . ld %r2,xxx+8@toc@l(%r11) | |
2866 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2867 | . bctr |
ad8e1ba5 AM |
2868 | |
2869 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2870 | code to adjust the value and save r2 to support multiple toc sections. | |
2871 | A ppc_stub_long_branch with an r2 offset looks like: | |
2872 | . std %r2,40(%r1) | |
2873 | . addis %r2,%r2,off@ha | |
2874 | . addi %r2,%r2,off@l | |
2875 | . b dest | |
2876 | ||
2877 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2878 | . std %r2,40(%r1) | |
6df4c9c2 AM |
2879 | . addis %r12,%r2,xxx@toc@ha |
2880 | . ld %r12,xxx@toc@l(%r12) | |
ad8e1ba5 AM |
2881 | . addis %r2,%r2,off@ha |
2882 | . addi %r2,%r2,off@l | |
71a39c98 | 2883 | . mtctr %r12 |
ad8e1ba5 | 2884 | . bctr |
ac2df442 | 2885 | |
05d0e962 AM |
2886 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2887 | variants exist too, simpler for plt calls since a new toc pointer | |
2888 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2889 | has some more complex stubs to handle calls marked with NOTOC | |
2890 | relocs from functions where r2 is not a valid toc pointer. These | |
2891 | come in two flavours, the ones shown below, and _both variants that | |
2892 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2893 | one call is from a function where r2 is used as the toc pointer but | |
2894 | needs a toc adjusting stub for small-model multi-toc, and another | |
2895 | call is from a function where r2 is not valid. | |
2896 | ppc_stub_long_branch_notoc: | |
2897 | . mflr %r12 | |
2898 | . bcl 20,31,1f | |
2899 | . 1: | |
2900 | . mflr %r11 | |
2901 | . mtlr %r12 | |
2cdcc330 AM |
2902 | . addis %r12,%r11,dest-1b@ha |
2903 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2904 | . b dest |
2905 | ||
2906 | ppc_stub_plt_branch_notoc: | |
2907 | . mflr %r12 | |
2908 | . bcl 20,31,1f | |
2909 | . 1: | |
2910 | . mflr %r11 | |
2911 | . mtlr %r12 | |
2912 | . lis %r12,xxx-1b@highest | |
f891966f | 2913 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2914 | . sldi %r12,%r12,32 |
f891966f | 2915 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2916 | . ori %r12,%r12,xxx-1b@l |
2917 | . add %r12,%r11,%r12 | |
2918 | . mtctr %r12 | |
2919 | . bctr | |
2920 | ||
2921 | ppc_stub_plt_call_notoc: | |
2922 | . mflr %r12 | |
2923 | . bcl 20,31,1f | |
2924 | . 1: | |
2925 | . mflr %r11 | |
2926 | . mtlr %r12 | |
2927 | . lis %r12,xxx-1b@highest | |
f891966f | 2928 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2929 | . sldi %r12,%r12,32 |
f891966f | 2930 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2931 | . ori %r12,%r12,xxx-1b@l |
2932 | . ldx %r12,%r11,%r12 | |
2933 | . mtctr %r12 | |
2934 | . bctr | |
2935 | ||
7c1f4227 | 2936 | There are also ELFv1 power10 variants of these stubs. |
04bdff6a | 2937 | ppc_stub_long_branch_notoc: |
d4b87b1e | 2938 | . pla %r12,dest@pcrel |
04bdff6a AM |
2939 | . b dest |
2940 | ppc_stub_plt_branch_notoc: | |
2941 | . lis %r11,(dest-1f)@highesta34 | |
2942 | . ori %r11,%r11,(dest-1f)@highera34 | |
2943 | . sldi %r11,%r11,34 | |
d4b87b1e | 2944 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2945 | . add %r12,%r11,%r12 |
2946 | . mtctr %r12 | |
2947 | . bctr | |
2948 | ppc_stub_plt_call_notoc: | |
2949 | . lis %r11,(xxx-1f)@highesta34 | |
2950 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2951 | . sldi %r11,%r11,34 | |
d4b87b1e | 2952 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2953 | . ldx %r12,%r11,%r12 |
2954 | . mtctr %r12 | |
2955 | . bctr | |
2956 | ||
05d0e962 AM |
2957 | In cases where the high instructions would add zero, they are |
2958 | omitted and following instructions modified in some cases. | |
7c1f4227 | 2959 | For example, a power10 ppc_stub_plt_call_notoc might simplify down |
04bdff6a AM |
2960 | to |
2961 | . pld %r12,xxx@pcrel | |
2962 | . mtctr %r12 | |
2963 | . bctr | |
05d0e962 AM |
2964 | |
2965 | For a given stub group (a set of sections all using the same toc | |
2966 | pointer value) there will be just one stub type used for any | |
2967 | particular function symbol. For example, if printf is called from | |
2968 | code with the tocsave optimization (ie. r2 saved in function | |
2969 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2970 | and from other code without the tocsave optimization requiring a | |
2971 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2972 | type will be created. Calls with the tocsave optimization will | |
2973 | enter this stub after the instruction saving r2. A similar | |
2974 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2975 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2976 | to call an external function like printf. If other calls to printf | |
2977 | require a ppc_stub_plt_call linkage stub then a single | |
2978 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2979 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2980 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2981 | be created and calls not requiring r2 to be saved will enter the | |
2982 | stub after the r2 save instruction. There is an analogous | |
2983 | hierarchy of long branch and plt branch stubs for local call | |
2984 | linkage. */ | |
721956f4 | 2985 | |
2cdcc330 AM |
2986 | enum ppc_stub_type |
2987 | { | |
721956f4 AM |
2988 | ppc_stub_none, |
2989 | ppc_stub_long_branch, | |
ad8e1ba5 | 2990 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2991 | ppc_stub_long_branch_notoc, |
2992 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2993 | ppc_stub_plt_branch, |
ad8e1ba5 | 2994 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2995 | ppc_stub_plt_branch_notoc, |
2996 | ppc_stub_plt_branch_both, | |
794e51c0 | 2997 | ppc_stub_plt_call, |
7341d5e2 | 2998 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2999 | ppc_stub_plt_call_notoc, |
3000 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
3001 | ppc_stub_global_entry, |
3002 | ppc_stub_save_res | |
721956f4 AM |
3003 | }; |
3004 | ||
6f20ed8a AM |
3005 | /* Information on stub grouping. */ |
3006 | struct map_stub | |
3007 | { | |
3008 | /* The stub section. */ | |
3009 | asection *stub_sec; | |
3010 | /* This is the section to which stubs in the group will be attached. */ | |
3011 | asection *link_sec; | |
a4b6fadd AM |
3012 | /* Next group. */ |
3013 | struct map_stub *next; | |
3014 | /* Whether to emit a copy of register save/restore functions in this | |
3015 | group. */ | |
3016 | int needs_save_res; | |
df136d64 AM |
3017 | /* Current offset within stubs after the insn restoring lr in a |
3018 | _notoc or _both stub using bcl for pc-relative addressing, or | |
3019 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
3020 | unsigned int lr_restore; | |
3021 | /* Accumulated size of EH info emitted to describe return address | |
3022 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
3023 | unsigned int eh_size; | |
3024 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
3025 | unsigned int eh_base; | |
6f20ed8a AM |
3026 | }; |
3027 | ||
2cdcc330 AM |
3028 | struct ppc_stub_hash_entry |
3029 | { | |
721956f4 AM |
3030 | /* Base hash table entry structure. */ |
3031 | struct bfd_hash_entry root; | |
3032 | ||
ad8e1ba5 AM |
3033 | enum ppc_stub_type stub_type; |
3034 | ||
6f20ed8a AM |
3035 | /* Group information. */ |
3036 | struct map_stub *group; | |
721956f4 AM |
3037 | |
3038 | /* Offset within stub_sec of the beginning of this stub. */ | |
3039 | bfd_vma stub_offset; | |
3040 | ||
3041 | /* Given the symbol's value and its section we can determine its final | |
3042 | value when building the stubs (so the stub knows where to jump. */ | |
3043 | bfd_vma target_value; | |
3044 | asection *target_section; | |
3045 | ||
721956f4 AM |
3046 | /* The symbol table entry, if any, that this was derived from. */ |
3047 | struct ppc_link_hash_entry *h; | |
e054468f | 3048 | struct plt_entry *plt_ent; |
721956f4 | 3049 | |
2d7ad24e AM |
3050 | /* Symbol type. */ |
3051 | unsigned char symtype; | |
3052 | ||
6911b7dc AM |
3053 | /* Symbol st_other. */ |
3054 | unsigned char other; | |
721956f4 AM |
3055 | }; |
3056 | ||
2cdcc330 AM |
3057 | struct ppc_branch_hash_entry |
3058 | { | |
721956f4 AM |
3059 | /* Base hash table entry structure. */ |
3060 | struct bfd_hash_entry root; | |
3061 | ||
c456f082 | 3062 | /* Offset within branch lookup table. */ |
721956f4 AM |
3063 | unsigned int offset; |
3064 | ||
3065 | /* Generation marker. */ | |
3066 | unsigned int iter; | |
3067 | }; | |
65f38f15 | 3068 | |
19e08130 AM |
3069 | /* Used to track dynamic relocations for local symbols. */ |
3070 | struct ppc_dyn_relocs | |
3071 | { | |
3072 | struct ppc_dyn_relocs *next; | |
3073 | ||
3074 | /* The input section of the reloc. */ | |
3075 | asection *sec; | |
3076 | ||
3077 | /* Total number of relocs copied for the input section. */ | |
3078 | unsigned int count : 31; | |
3079 | ||
3080 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3081 | unsigned int ifunc : 1; | |
3082 | }; | |
3083 | ||
65f38f15 AM |
3084 | struct ppc_link_hash_entry |
3085 | { | |
3086 | struct elf_link_hash_entry elf; | |
3087 | ||
2cdcc330 AM |
3088 | union |
3089 | { | |
b3fac117 AM |
3090 | /* A pointer to the most recently used stub hash entry against this |
3091 | symbol. */ | |
3092 | struct ppc_stub_hash_entry *stub_cache; | |
3093 | ||
3094 | /* A pointer to the next symbol starting with a '.' */ | |
3095 | struct ppc_link_hash_entry *next_dot_sym; | |
3096 | } u; | |
721956f4 | 3097 | |
721956f4 | 3098 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3099 | struct ppc_link_hash_entry *oh; |
721956f4 | 3100 | |
e86ce104 AM |
3101 | /* Flag function code and descriptor symbols. */ |
3102 | unsigned int is_func:1; | |
3103 | unsigned int is_func_descriptor:1; | |
908b32fc | 3104 | unsigned int fake:1; |
411e1bfb | 3105 | |
c5614fa4 AM |
3106 | /* Whether global opd/toc sym has been adjusted or not. |
3107 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3108 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3109 | unsigned int adjust_done:1; |
3110 | ||
a4b6fadd AM |
3111 | /* Set if this is an out-of-line register save/restore function, |
3112 | with non-standard calling convention. */ | |
3113 | unsigned int save_res:1; | |
3114 | ||
8b5f1ed8 AM |
3115 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3116 | even when the duplicate symbol does not provide a definition. */ | |
3117 | unsigned int non_zero_localentry:1; | |
3118 | ||
411e1bfb | 3119 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3120 | Bits are or'd into the mask as the corresponding relocs are |
3121 | encountered during check_relocs, with TLS_TLS being set when any | |
3122 | of the other TLS bits are set. tls_optimize clears bits when | |
3123 | optimizing to indicate the corresponding GOT entry type is not | |
3124 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 3125 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
3126 | These flags are also kept for local symbols. */ |
3127 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3128 | #define TLS_GD 2 /* GD reloc. */ | |
3129 | #define TLS_LD 4 /* LD reloc. */ | |
3130 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3131 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3132 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 3133 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
46e9995a | 3134 | #define TLS_EXPLICIT 256 /* TOC section TLS reloc, not stored. */ |
f961d9dd | 3135 | unsigned char tls_mask; |
37da22e5 AM |
3136 | |
3137 | /* The above field is also used to mark function symbols. In which | |
3138 | case TLS_TLS will be 0. */ | |
3139 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3140 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3141 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3142 | }; |
3143 | ||
ed7007c1 AM |
3144 | static inline struct ppc_link_hash_entry * |
3145 | ppc_elf_hash_entry (struct elf_link_hash_entry *ent) | |
3146 | { | |
3147 | return (struct ppc_link_hash_entry *) ent; | |
3148 | } | |
3149 | ||
65f38f15 AM |
3150 | /* ppc64 ELF linker hash table. */ |
3151 | ||
3152 | struct ppc_link_hash_table | |
3153 | { | |
3154 | struct elf_link_hash_table elf; | |
3155 | ||
721956f4 AM |
3156 | /* The stub hash table. */ |
3157 | struct bfd_hash_table stub_hash_table; | |
3158 | ||
3159 | /* Another hash table for plt_branch stubs. */ | |
3160 | struct bfd_hash_table branch_hash_table; | |
3161 | ||
3b421ab3 AM |
3162 | /* Hash table for function prologue tocsave. */ |
3163 | htab_t tocsave_htab; | |
3164 | ||
e7d1c40c AM |
3165 | /* Various options and other info passed from the linker. */ |
3166 | struct ppc64_elf_params *params; | |
721956f4 | 3167 | |
6f20ed8a AM |
3168 | /* The size of sec_info below. */ |
3169 | unsigned int sec_info_arr_size; | |
3170 | ||
3171 | /* Per-section array of extra section info. Done this way rather | |
3172 | than as part of ppc64_elf_section_data so we have the info for | |
3173 | non-ppc64 sections. */ | |
3174 | struct | |
3175 | { | |
3176 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3177 | bfd_vma toc_off; |
6f20ed8a AM |
3178 | |
3179 | union | |
3180 | { | |
3181 | /* The section group that this section belongs to. */ | |
3182 | struct map_stub *group; | |
3183 | /* A temp section list pointer. */ | |
3184 | asection *list; | |
3185 | } u; | |
3186 | } *sec_info; | |
721956f4 | 3187 | |
a4b6fadd AM |
3188 | /* Linked list of groups. */ |
3189 | struct map_stub *group; | |
3190 | ||
ad8e1ba5 AM |
3191 | /* Temp used when calculating TOC pointers. */ |
3192 | bfd_vma toc_curr; | |
bf102f86 AM |
3193 | bfd *toc_bfd; |
3194 | asection *toc_first_sec; | |
ad8e1ba5 | 3195 | |
b3fac117 AM |
3196 | /* Used when adding symbols. */ |
3197 | struct ppc_link_hash_entry *dot_syms; | |
3198 | ||
33e44f2e | 3199 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3200 | asection *glink; |
9e390558 | 3201 | asection *global_entry; |
82bd7b59 | 3202 | asection *sfpr; |
2d7ad24e AM |
3203 | asection *pltlocal; |
3204 | asection *relpltlocal; | |
4ce794b7 AM |
3205 | asection *brlt; |
3206 | asection *relbrlt; | |
58d180e8 | 3207 | asection *glink_eh_frame; |
ec338859 | 3208 | |
8387904d AM |
3209 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3210 | struct ppc_link_hash_entry *tls_get_addr; | |
3211 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
9e7028aa AM |
3212 | struct ppc_link_hash_entry *tga_desc; |
3213 | struct ppc_link_hash_entry *tga_desc_fd; | |
a804e476 | 3214 | struct map_stub *tga_group; |
411e1bfb | 3215 | |
927be08e AM |
3216 | /* The size of reliplt used by got entry relocs. */ |
3217 | bfd_size_type got_reli_size; | |
3218 | ||
9b5ecbd0 | 3219 | /* Statistics. */ |
7341d5e2 | 3220 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3221 | |
ee75fd95 AM |
3222 | /* Number of stubs against global syms. */ |
3223 | unsigned long stub_globals; | |
3224 | ||
ee67d69a AM |
3225 | /* Set if we're linking code with function descriptors. */ |
3226 | unsigned int opd_abi:1; | |
3227 | ||
4c52953f | 3228 | /* Support for multiple toc sections. */ |
33c0ec9d | 3229 | unsigned int do_multi_toc:1; |
4c52953f | 3230 | unsigned int multi_toc_needed:1; |
927be08e | 3231 | unsigned int second_toc_pass:1; |
67f0cbdb | 3232 | unsigned int do_toc_opt:1; |
4c52953f | 3233 | |
9a23f96e AM |
3234 | /* Set if tls optimization is enabled. */ |
3235 | unsigned int do_tls_opt:1; | |
3236 | ||
3e04d765 AM |
3237 | /* Set if inline plt calls should be converted to direct calls. */ |
3238 | unsigned int can_convert_all_inline_plt:1; | |
3239 | ||
5d1634d7 | 3240 | /* Set on error. */ |
99877b66 | 3241 | unsigned int stub_error:1; |
721956f4 | 3242 | |
8c5b4e52 AM |
3243 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3244 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3245 | |
f378ab09 AM |
3246 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3247 | unsigned int has_plt_localentry0:1; | |
3248 | ||
5663e321 AM |
3249 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3250 | unsigned int notoc_plt:1; | |
3251 | ||
e10a07b3 AM |
3252 | /* Whether any code linked seems to be Power10. */ |
3253 | unsigned int has_power10_relocs:1; | |
3254 | ||
721956f4 AM |
3255 | /* Incremented every time we size stubs. */ |
3256 | unsigned int stub_iteration; | |
65f38f15 AM |
3257 | }; |
3258 | ||
4c52953f AM |
3259 | /* Rename some of the generic section flags to better document how they |
3260 | are used here. */ | |
b0dddeec AM |
3261 | |
3262 | /* Nonzero if this section has TLS related relocations. */ | |
3263 | #define has_tls_reloc sec_flg0 | |
3264 | ||
9737e8af AM |
3265 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3266 | relocations. */ | |
3267 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3268 | |
3269 | /* Nonzero if this section has any toc or got relocs. */ | |
3270 | #define has_toc_reloc sec_flg2 | |
3271 | ||
3272 | /* Nonzero if this section has a call to another section that uses | |
3273 | the toc or got. */ | |
d77c8a4b | 3274 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3275 | |
3276 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3277 | #define call_check_in_progress sec_flg4 |
70cc837d | 3278 | #define call_check_done sec_flg5 |
4c52953f | 3279 | |
65f38f15 AM |
3280 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3281 | ||
3282 | #define ppc_hash_table(p) \ | |
573eb292 AM |
3283 | ((is_elf_hash_table ((p)->hash) \ |
3284 | && elf_hash_table_id (elf_hash_table (p)) == PPC64_ELF_DATA) \ | |
3285 | ? (struct ppc_link_hash_table *) (p)->hash : NULL) | |
65f38f15 | 3286 | |
721956f4 AM |
3287 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3288 | ((struct ppc_stub_hash_entry *) \ | |
3289 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3290 | ||
3291 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3292 | ((struct ppc_branch_hash_entry *) \ | |
3293 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3294 | ||
3295 | /* Create an entry in the stub hash table. */ | |
3296 | ||
3297 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3298 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3299 | struct bfd_hash_table *table, | |
3300 | const char *string) | |
721956f4 AM |
3301 | { |
3302 | /* Allocate the structure if it has not already been allocated by a | |
3303 | subclass. */ | |
3304 | if (entry == NULL) | |
3305 | { | |
3306 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3307 | if (entry == NULL) | |
3308 | return entry; | |
3309 | } | |
3310 | ||
3311 | /* Call the allocation method of the superclass. */ | |
3312 | entry = bfd_hash_newfunc (entry, table, string); | |
3313 | if (entry != NULL) | |
3314 | { | |
3315 | struct ppc_stub_hash_entry *eh; | |
3316 | ||
3317 | /* Initialize the local fields. */ | |
3318 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3319 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3320 | eh->group = NULL; |
721956f4 AM |
3321 | eh->stub_offset = 0; |
3322 | eh->target_value = 0; | |
3323 | eh->target_section = NULL; | |
721956f4 | 3324 | eh->h = NULL; |
6911b7dc | 3325 | eh->plt_ent = NULL; |
6911b7dc | 3326 | eh->other = 0; |
721956f4 AM |
3327 | } |
3328 | ||
3329 | return entry; | |
3330 | } | |
3331 | ||
3332 | /* Create an entry in the branch hash table. */ | |
3333 | ||
3334 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3335 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3336 | struct bfd_hash_table *table, | |
3337 | const char *string) | |
721956f4 AM |
3338 | { |
3339 | /* Allocate the structure if it has not already been allocated by a | |
3340 | subclass. */ | |
3341 | if (entry == NULL) | |
3342 | { | |
3343 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3344 | if (entry == NULL) | |
3345 | return entry; | |
3346 | } | |
3347 | ||
3348 | /* Call the allocation method of the superclass. */ | |
3349 | entry = bfd_hash_newfunc (entry, table, string); | |
3350 | if (entry != NULL) | |
3351 | { | |
3352 | struct ppc_branch_hash_entry *eh; | |
3353 | ||
3354 | /* Initialize the local fields. */ | |
3355 | eh = (struct ppc_branch_hash_entry *) entry; | |
3356 | eh->offset = 0; | |
3357 | eh->iter = 0; | |
3358 | } | |
3359 | ||
3360 | return entry; | |
3361 | } | |
3362 | ||
65f38f15 AM |
3363 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3364 | ||
3365 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3366 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3367 | struct bfd_hash_table *table, | |
3368 | const char *string) | |
65f38f15 AM |
3369 | { |
3370 | /* Allocate the structure if it has not already been allocated by a | |
3371 | subclass. */ | |
3372 | if (entry == NULL) | |
3373 | { | |
3374 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3375 | if (entry == NULL) | |
3376 | return entry; | |
3377 | } | |
3378 | ||
3379 | /* Call the allocation method of the superclass. */ | |
3380 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3381 | if (entry != NULL) | |
3382 | { | |
3383 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3384 | ||
b3fac117 | 3385 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3386 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3387 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3388 | ||
3389 | /* When making function calls, old ABI code references function entry | |
3390 | points (dot symbols), while new ABI code references the function | |
3391 | descriptor symbol. We need to make any combination of reference and | |
3392 | definition work together, without breaking archive linking. | |
3393 | ||
3394 | For a defined function "foo" and an undefined call to "bar": | |
3395 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3396 | "bar" too). | |
3397 | A new object defines "foo" and references "bar". | |
3398 | ||
3399 | A new object thus has no problem with its undefined symbols being | |
3400 | satisfied by definitions in an old object. On the other hand, the | |
3401 | old object won't have ".bar" satisfied by a new object. | |
3402 | ||
3403 | Keep a list of newly added dot-symbols. */ | |
3404 | ||
3405 | if (string[0] == '.') | |
3406 | { | |
3407 | struct ppc_link_hash_table *htab; | |
3408 | ||
3409 | htab = (struct ppc_link_hash_table *) table; | |
3410 | eh->u.next_dot_sym = htab->dot_syms; | |
3411 | htab->dot_syms = eh; | |
3412 | } | |
65f38f15 AM |
3413 | } |
3414 | ||
3415 | return entry; | |
3416 | } | |
3417 | ||
2cdcc330 AM |
3418 | struct tocsave_entry |
3419 | { | |
3b421ab3 AM |
3420 | asection *sec; |
3421 | bfd_vma offset; | |
3422 | }; | |
3423 | ||
3424 | static hashval_t | |
3425 | tocsave_htab_hash (const void *p) | |
3426 | { | |
3427 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3428 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3429 | } |
3430 | ||
3431 | static int | |
3432 | tocsave_htab_eq (const void *p1, const void *p2) | |
3433 | { | |
3434 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3435 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3436 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3437 | } | |
3438 | ||
68faa637 AM |
3439 | /* Destroy a ppc64 ELF linker hash table. */ |
3440 | ||
3441 | static void | |
d495ab0d | 3442 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3443 | { |
d495ab0d | 3444 | struct ppc_link_hash_table *htab; |
68faa637 | 3445 | |
d495ab0d | 3446 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3447 | if (htab->tocsave_htab) |
3448 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3449 | bfd_hash_table_free (&htab->branch_hash_table); |
3450 | bfd_hash_table_free (&htab->stub_hash_table); | |
3451 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3452 | } |
3453 | ||
65f38f15 AM |
3454 | /* Create a ppc64 ELF linker hash table. */ |
3455 | ||
3456 | static struct bfd_link_hash_table * | |
4ce794b7 | 3457 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3458 | { |
3459 | struct ppc_link_hash_table *htab; | |
986f0783 | 3460 | size_t amt = sizeof (struct ppc_link_hash_table); |
65f38f15 | 3461 | |
4ce794b7 | 3462 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3463 | if (htab == NULL) |
3464 | return NULL; | |
3465 | ||
66eb6687 | 3466 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3467 | sizeof (struct ppc_link_hash_entry), |
3468 | PPC64_ELF_DATA)) | |
65f38f15 | 3469 | { |
e2d34d7d | 3470 | free (htab); |
65f38f15 AM |
3471 | return NULL; |
3472 | } | |
3473 | ||
721956f4 | 3474 | /* Init the stub hash table too. */ |
66eb6687 AM |
3475 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3476 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3477 | { |
d495ab0d | 3478 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3479 | return NULL; |
3480 | } | |
721956f4 AM |
3481 | |
3482 | /* And the branch hash table. */ | |
66eb6687 AM |
3483 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3484 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3485 | { |
3486 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3487 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3488 | return NULL; |
3489 | } | |
721956f4 | 3490 | |
3b421ab3 AM |
3491 | htab->tocsave_htab = htab_try_create (1024, |
3492 | tocsave_htab_hash, | |
3493 | tocsave_htab_eq, | |
3494 | NULL); | |
3495 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3496 | { |
d495ab0d | 3497 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3498 | return NULL; |
3499 | } | |
d495ab0d | 3500 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3501 | |
3254fd24 AM |
3502 | /* Initializing two fields of the union is just cosmetic. We really |
3503 | only care about glist, but when compiled on a 32-bit host the | |
3504 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3505 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3506 | htab->elf.init_got_refcount.refcount = 0; |
3507 | htab->elf.init_got_refcount.glist = NULL; | |
3508 | htab->elf.init_plt_refcount.refcount = 0; | |
3509 | htab->elf.init_plt_refcount.glist = NULL; | |
3510 | htab->elf.init_got_offset.offset = 0; | |
3511 | htab->elf.init_got_offset.glist = NULL; | |
3512 | htab->elf.init_plt_offset.offset = 0; | |
3513 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3514 | |
65f38f15 AM |
3515 | return &htab->elf.root; |
3516 | } | |
3517 | ||
bfeb4a28 AM |
3518 | /* Create sections for linker generated code. */ |
3519 | ||
3520 | static bfd_boolean | |
3521 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3522 | { | |
3523 | struct ppc_link_hash_table *htab; | |
3524 | flagword flags; | |
3525 | ||
3526 | htab = ppc_hash_table (info); | |
3527 | ||
bfeb4a28 AM |
3528 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3529 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3530 | if (htab->params->save_restore_funcs) |
3531 | { | |
3532 | /* Create .sfpr for code to save and restore fp regs. */ | |
3533 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3534 | flags); | |
3535 | if (htab->sfpr == NULL | |
fd361982 | 3536 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
b32547cd AM |
3537 | return FALSE; |
3538 | } | |
3539 | ||
3540 | if (bfd_link_relocatable (info)) | |
3541 | return TRUE; | |
bfeb4a28 AM |
3542 | |
3543 | /* Create .glink for lazy dynamic linking support. */ | |
3544 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3545 | flags); | |
3546 | if (htab->glink == NULL | |
fd361982 | 3547 | || !bfd_set_section_alignment (htab->glink, 3)) |
bfeb4a28 AM |
3548 | return FALSE; |
3549 | ||
9e390558 AM |
3550 | /* The part of .glink used by global entry stubs, separate so that |
3551 | it can be aligned appropriately without affecting htab->glink. */ | |
3552 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3553 | flags); | |
3554 | if (htab->global_entry == NULL | |
fd361982 | 3555 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
9e390558 AM |
3556 | return FALSE; |
3557 | ||
bfeb4a28 AM |
3558 | if (!info->no_ld_generated_unwind_info) |
3559 | { | |
3560 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3561 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3562 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3563 | ".eh_frame", | |
3564 | flags); | |
3565 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3566 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
bfeb4a28 AM |
3567 | return FALSE; |
3568 | } | |
3569 | ||
3570 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3571 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3572 | if (htab->elf.iplt == NULL | |
fd361982 | 3573 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
bfeb4a28 AM |
3574 | return FALSE; |
3575 | ||
3576 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3577 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3578 | htab->elf.irelplt |
3579 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3580 | if (htab->elf.irelplt == NULL | |
fd361982 | 3581 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3582 | return FALSE; |
3583 | ||
3584 | /* Create branch lookup table for plt_branch stubs. */ | |
3585 | flags = (SEC_ALLOC | SEC_LOAD | |
3586 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3587 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3588 | flags); | |
3589 | if (htab->brlt == NULL | |
fd361982 | 3590 | || !bfd_set_section_alignment (htab->brlt, 3)) |
bfeb4a28 AM |
3591 | return FALSE; |
3592 | ||
2d7ad24e AM |
3593 | /* Local plt entries, put in .branch_lt but a separate section for |
3594 | convenience. */ | |
3595 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3596 | flags); | |
3597 | if (htab->pltlocal == NULL | |
fd361982 | 3598 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
2d7ad24e AM |
3599 | return FALSE; |
3600 | ||
0e1862bb | 3601 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3602 | return TRUE; |
3603 | ||
3604 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3605 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3606 | htab->relbrlt |
3607 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3608 | if (htab->relbrlt == NULL |
fd361982 | 3609 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
bfeb4a28 AM |
3610 | return FALSE; |
3611 | ||
2d7ad24e AM |
3612 | htab->relpltlocal |
3613 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3614 | if (htab->relpltlocal == NULL | |
fd361982 | 3615 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
2d7ad24e AM |
3616 | return FALSE; |
3617 | ||
bfeb4a28 AM |
3618 | return TRUE; |
3619 | } | |
3620 | ||
e717da7e AM |
3621 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3622 | ||
bfeb4a28 | 3623 | bfd_boolean |
e7d1c40c AM |
3624 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3625 | struct ppc64_elf_params *params) | |
e717da7e AM |
3626 | { |
3627 | struct ppc_link_hash_table *htab; | |
3628 | ||
e7d1c40c | 3629 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3630 | |
3631 | /* Always hook our dynamic sections into the first bfd, which is the | |
3632 | linker created stub bfd. This ensures that the GOT header is at | |
3633 | the start of the output TOC section. */ | |
3634 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3635 | htab->elf.dynobj = params->stub_bfd; |
3636 | htab->params = params; | |
bfeb4a28 | 3637 | |
bfeb4a28 | 3638 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3639 | } |
3640 | ||
721956f4 AM |
3641 | /* Build a name for an entry in the stub hash table. */ |
3642 | ||
3643 | static char * | |
4ce794b7 AM |
3644 | ppc_stub_name (const asection *input_section, |
3645 | const asection *sym_sec, | |
3646 | const struct ppc_link_hash_entry *h, | |
3647 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3648 | { |
3649 | char *stub_name; | |
bcaa2f82 | 3650 | ssize_t len; |
721956f4 AM |
3651 | |
3652 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3653 | offsets from a sym as a branch target? In fact, we could | |
3654 | probably assume the addend is always zero. */ | |
3655 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3656 | ||
3657 | if (h) | |
3658 | { | |
3659 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3660 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3661 | if (stub_name == NULL) |
3662 | return stub_name; | |
3663 | ||
bcaa2f82 AM |
3664 | len = sprintf (stub_name, "%08x.%s+%x", |
3665 | input_section->id & 0xffffffff, | |
3666 | h->elf.root.root.string, | |
3667 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3668 | } |
3669 | else | |
3670 | { | |
ad8e1ba5 | 3671 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 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.%x:%x+%x", |
3677 | input_section->id & 0xffffffff, | |
3678 | sym_sec->id & 0xffffffff, | |
3679 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3680 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3681 | } |
bcaa2f82 | 3682 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3683 | stub_name[len - 2] = 0; |
721956f4 AM |
3684 | return stub_name; |
3685 | } | |
3686 | ||
e10a07b3 AM |
3687 | /* If mixing power10 with non-power10 code and --power10-stubs is not |
3688 | specified (or is auto) then calls using @notoc relocations that | |
3689 | need a stub will utilize power10 instructions in the stub, and | |
3690 | calls without @notoc relocations will not use power10 instructions. | |
3691 | The two classes of stubs are stored in separate stub_hash_table | |
3692 | entries having the same key string. The two entries will always be | |
3693 | adjacent on entry->root.next chain, even if hash table resizing | |
3694 | occurs. This function selects the correct entry to use. */ | |
3695 | ||
3696 | static struct ppc_stub_hash_entry * | |
3697 | select_alt_stub (struct ppc_stub_hash_entry *entry, bfd_boolean notoc) | |
3698 | { | |
3699 | bfd_boolean have_notoc; | |
3700 | ||
3701 | have_notoc = (entry->stub_type == ppc_stub_plt_call_notoc | |
3702 | || entry->stub_type == ppc_stub_plt_branch_notoc | |
3703 | || entry->stub_type == ppc_stub_long_branch_notoc); | |
3704 | ||
3705 | if (have_notoc != notoc) | |
3706 | { | |
3707 | const char *stub_name = entry->root.string; | |
3708 | ||
3709 | entry = (struct ppc_stub_hash_entry *) entry->root.next; | |
3710 | if (entry != NULL | |
3711 | && entry->root.string != stub_name) | |
3712 | entry = NULL; | |
3713 | } | |
3714 | ||
3715 | return entry; | |
3716 | } | |
3717 | ||
721956f4 AM |
3718 | /* Look up an entry in the stub hash. Stub entries are cached because |
3719 | creating the stub name takes a bit of time. */ | |
3720 | ||
3721 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3722 | ppc_get_stub_entry (const asection *input_section, |
3723 | const asection *sym_sec, | |
039b3fef | 3724 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3725 | const Elf_Internal_Rela *rel, |
3726 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3727 | { |
3728 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3729 | struct map_stub *group; |
721956f4 AM |
3730 | |
3731 | /* If this input section is part of a group of sections sharing one | |
3732 | stub section, then use the id of the first section in the group. | |
3733 | Stub names need to include a section id, as there may well be | |
3734 | more than one stub used to reach say, printf, and we need to | |
3735 | distinguish between them. */ | |
6f20ed8a | 3736 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3737 | if (group == NULL) |
3738 | return NULL; | |
721956f4 | 3739 | |
b3fac117 AM |
3740 | if (h != NULL && h->u.stub_cache != NULL |
3741 | && h->u.stub_cache->h == h | |
6f20ed8a | 3742 | && h->u.stub_cache->group == group) |
721956f4 | 3743 | { |
b3fac117 | 3744 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3745 | } |
3746 | else | |
3747 | { | |
3748 | char *stub_name; | |
3749 | ||
6f20ed8a | 3750 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3751 | if (stub_name == NULL) |
3752 | return NULL; | |
3753 | ||
3754 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3755 | stub_name, FALSE, FALSE); |
721956f4 | 3756 | if (h != NULL) |
b3fac117 | 3757 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3758 | |
3759 | free (stub_name); | |
3760 | } | |
3761 | ||
e10a07b3 AM |
3762 | if (stub_entry != NULL && htab->params->power10_stubs == -1) |
3763 | { | |
3764 | bfd_boolean notoc = ELF64_R_TYPE (rel->r_info) == R_PPC64_REL24_NOTOC; | |
3765 | ||
3766 | stub_entry = select_alt_stub (stub_entry, notoc); | |
3767 | } | |
3768 | ||
721956f4 AM |
3769 | return stub_entry; |
3770 | } | |
3771 | ||
3772 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3773 | stub entry are initialised. */ | |
3774 | ||
3775 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3776 | ppc_add_stub (const char *stub_name, |
3777 | asection *section, | |
25f53a85 | 3778 | struct bfd_link_info *info) |
721956f4 | 3779 | { |
25f53a85 | 3780 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3781 | struct map_stub *group; |
721956f4 AM |
3782 | asection *link_sec; |
3783 | asection *stub_sec; | |
3784 | struct ppc_stub_hash_entry *stub_entry; | |
3785 | ||
6f20ed8a AM |
3786 | group = htab->sec_info[section->id].u.group; |
3787 | link_sec = group->link_sec; | |
3788 | stub_sec = group->stub_sec; | |
721956f4 AM |
3789 | if (stub_sec == NULL) |
3790 | { | |
6f20ed8a AM |
3791 | size_t namelen; |
3792 | bfd_size_type len; | |
3793 | char *s_name; | |
721956f4 | 3794 | |
6f20ed8a AM |
3795 | namelen = strlen (link_sec->name); |
3796 | len = namelen + sizeof (STUB_SUFFIX); | |
3797 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3798 | if (s_name == NULL) | |
3799 | return NULL; | |
721956f4 | 3800 | |
6f20ed8a AM |
3801 | memcpy (s_name, link_sec->name, namelen); |
3802 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3803 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3804 | if (stub_sec == NULL) | |
3805 | return NULL; | |
3806 | group->stub_sec = stub_sec; | |
721956f4 AM |
3807 | } |
3808 | ||
3809 | /* Enter this entry into the linker stub hash table. */ | |
3810 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3811 | TRUE, FALSE); |
721956f4 AM |
3812 | if (stub_entry == NULL) |
3813 | { | |
695344c0 | 3814 | /* xgettext:c-format */ |
cf97bcb0 AM |
3815 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3816 | section->owner, stub_name); | |
721956f4 AM |
3817 | return NULL; |
3818 | } | |
3819 | ||
6f20ed8a | 3820 | stub_entry->group = group; |
721956f4 | 3821 | stub_entry->stub_offset = 0; |
721956f4 AM |
3822 | return stub_entry; |
3823 | } | |
3824 | ||
e717da7e AM |
3825 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3826 | not already done. */ | |
65f38f15 | 3827 | |
b34976b6 | 3828 | static bfd_boolean |
e717da7e | 3829 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3830 | { |
e717da7e AM |
3831 | asection *got, *relgot; |
3832 | flagword flags; | |
3833 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3834 | |
0c8d6e5c | 3835 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3836 | return FALSE; |
4dfe6ac6 NC |
3837 | if (htab == NULL) |
3838 | return FALSE; | |
0ffa91dd | 3839 | |
33e44f2e AM |
3840 | if (!htab->elf.sgot |
3841 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3842 | return FALSE; | |
e717da7e AM |
3843 | |
3844 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3845 | | SEC_LINKER_CREATED); | |
3846 | ||
c456f082 | 3847 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3848 | if (!got |
fd361982 | 3849 | || !bfd_set_section_alignment (got, 3)) |
e717da7e | 3850 | return FALSE; |
65f38f15 | 3851 | |
c456f082 AM |
3852 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3853 | flags | SEC_READONLY); | |
e717da7e | 3854 | if (!relgot |
fd361982 | 3855 | || !bfd_set_section_alignment (relgot, 3)) |
b34976b6 | 3856 | return FALSE; |
e717da7e AM |
3857 | |
3858 | ppc64_elf_tdata (abfd)->got = got; | |
3859 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3860 | return TRUE; |
65f38f15 | 3861 | } |
5bd4f169 | 3862 | |
b31867b6 AM |
3863 | /* Follow indirect and warning symbol links. */ |
3864 | ||
3865 | static inline struct bfd_link_hash_entry * | |
3866 | follow_link (struct bfd_link_hash_entry *h) | |
3867 | { | |
3868 | while (h->type == bfd_link_hash_indirect | |
3869 | || h->type == bfd_link_hash_warning) | |
3870 | h = h->u.i.link; | |
3871 | return h; | |
3872 | } | |
3873 | ||
3874 | static inline struct elf_link_hash_entry * | |
3875 | elf_follow_link (struct elf_link_hash_entry *h) | |
3876 | { | |
3877 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3878 | } | |
3879 | ||
3880 | static inline struct ppc_link_hash_entry * | |
3881 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3882 | { | |
ed7007c1 | 3883 | return ppc_elf_hash_entry (elf_follow_link (&h->elf)); |
b31867b6 AM |
3884 | } |
3885 | ||
40d16e0b AM |
3886 | /* Merge PLT info on FROM with that on TO. */ |
3887 | ||
3888 | static void | |
3889 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3890 | struct ppc_link_hash_entry *to) | |
3891 | { | |
3892 | if (from->elf.plt.plist != NULL) | |
3893 | { | |
3894 | if (to->elf.plt.plist != NULL) | |
3895 | { | |
3896 | struct plt_entry **entp; | |
3897 | struct plt_entry *ent; | |
3898 | ||
3899 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3900 | { | |
3901 | struct plt_entry *dent; | |
3902 | ||
3903 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3904 | if (dent->addend == ent->addend) | |
3905 | { | |
3906 | dent->plt.refcount += ent->plt.refcount; | |
3907 | *entp = ent->next; | |
3908 | break; | |
3909 | } | |
3910 | if (dent == NULL) | |
3911 | entp = &ent->next; | |
3912 | } | |
3913 | *entp = to->elf.plt.plist; | |
3914 | } | |
3915 | ||
3916 | to->elf.plt.plist = from->elf.plt.plist; | |
3917 | from->elf.plt.plist = NULL; | |
3918 | } | |
3919 | } | |
3920 | ||
65f38f15 AM |
3921 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3922 | ||
3923 | static void | |
fcfa13d2 AM |
3924 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3925 | struct elf_link_hash_entry *dir, | |
3926 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3927 | { |
3928 | struct ppc_link_hash_entry *edir, *eind; | |
3929 | ||
ed7007c1 AM |
3930 | edir = ppc_elf_hash_entry (dir); |
3931 | eind = ppc_elf_hash_entry (ind); | |
65f38f15 | 3932 | |
c79d6685 AM |
3933 | edir->is_func |= eind->is_func; |
3934 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3935 | edir->tls_mask |= eind->tls_mask; | |
3936 | if (eind->oh != NULL) | |
3937 | edir->oh = ppc_follow_link (eind->oh); | |
3938 | ||
474436e6 | 3939 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3940 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3941 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3942 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3943 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3944 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3945 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3946 | |
d311bc8b AM |
3947 | /* If we were called to copy over info for a weak sym, don't copy |
3948 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3949 | in order to simplify readonly_dynrelocs and save a field in the | |
3950 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3951 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3952 | are then tested. */ |
d311bc8b | 3953 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3954 | return; |
d311bc8b | 3955 | |
411e1bfb | 3956 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
190eb1dd | 3957 | if (ind->dyn_relocs != NULL) |
65f38f15 | 3958 | { |
190eb1dd | 3959 | if (dir->dyn_relocs != NULL) |
bbd7ec4a | 3960 | { |
6061a67d AM |
3961 | struct elf_dyn_relocs **pp; |
3962 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3963 | |
fcfa13d2 | 3964 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a | 3965 | list. Merge any entries against the same section. */ |
190eb1dd | 3966 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
bbd7ec4a | 3967 | { |
6061a67d | 3968 | struct elf_dyn_relocs *q; |
bbd7ec4a | 3969 | |
190eb1dd | 3970 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
bbd7ec4a AM |
3971 | if (q->sec == p->sec) |
3972 | { | |
3973 | q->pc_count += p->pc_count; | |
3974 | q->count += p->count; | |
3975 | *pp = p->next; | |
3976 | break; | |
3977 | } | |
3978 | if (q == NULL) | |
3979 | pp = &p->next; | |
3980 | } | |
190eb1dd | 3981 | *pp = dir->dyn_relocs; |
bbd7ec4a AM |
3982 | } |
3983 | ||
190eb1dd L |
3984 | dir->dyn_relocs = ind->dyn_relocs; |
3985 | ind->dyn_relocs = NULL; | |
65f38f15 | 3986 | } |
65f38f15 | 3987 | |
81848ca0 AM |
3988 | /* Copy over got entries that we may have already seen to the |
3989 | symbol which just became indirect. */ | |
411e1bfb AM |
3990 | if (eind->elf.got.glist != NULL) |
3991 | { | |
3992 | if (edir->elf.got.glist != NULL) | |
3993 | { | |
3994 | struct got_entry **entp; | |
3995 | struct got_entry *ent; | |
3996 | ||
3997 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3998 | { | |
3999 | struct got_entry *dent; | |
4000 | ||
4001 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4002 | if (dent->addend == ent->addend | |
e717da7e | 4003 | && dent->owner == ent->owner |
411e1bfb AM |
4004 | && dent->tls_type == ent->tls_type) |
4005 | { | |
4006 | dent->got.refcount += ent->got.refcount; | |
4007 | *entp = ent->next; | |
4008 | break; | |
4009 | } | |
4010 | if (dent == NULL) | |
4011 | entp = &ent->next; | |
4012 | } | |
4013 | *entp = edir->elf.got.glist; | |
4014 | } | |
4015 | ||
4016 | edir->elf.got.glist = eind->elf.got.glist; | |
4017 | eind->elf.got.glist = NULL; | |
4018 | } | |
4019 | ||
4020 | /* And plt entries. */ | |
40d16e0b | 4021 | move_plt_plist (eind, edir); |
411e1bfb | 4022 | |
fcfa13d2 | 4023 | if (eind->elf.dynindx != -1) |
411e1bfb | 4024 | { |
fcfa13d2 AM |
4025 | if (edir->elf.dynindx != -1) |
4026 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4027 | edir->elf.dynstr_index); | |
411e1bfb AM |
4028 | edir->elf.dynindx = eind->elf.dynindx; |
4029 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4030 | eind->elf.dynindx = -1; | |
4031 | eind->elf.dynstr_index = 0; | |
4032 | } | |
411e1bfb AM |
4033 | } |
4034 | ||
8387904d AM |
4035 | /* Find the function descriptor hash entry from the given function code |
4036 | hash entry FH. Link the entries via their OH fields. */ | |
4037 | ||
4038 | static struct ppc_link_hash_entry * | |
b31867b6 | 4039 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4040 | { |
4041 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4042 | ||
4043 | if (fdh == NULL) | |
4044 | { | |
4045 | const char *fd_name = fh->elf.root.root.string + 1; | |
4046 | ||
ed7007c1 AM |
4047 | fdh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, fd_name, |
4048 | FALSE, FALSE, FALSE)); | |
b31867b6 AM |
4049 | if (fdh == NULL) |
4050 | return fdh; | |
4051 | ||
4052 | fdh->is_func_descriptor = 1; | |
4053 | fdh->oh = fh; | |
4054 | fh->is_func = 1; | |
4055 | fh->oh = fdh; | |
8387904d AM |
4056 | } |
4057 | ||
8c5b4e52 AM |
4058 | fdh = ppc_follow_link (fdh); |
4059 | fdh->is_func_descriptor = 1; | |
4060 | fdh->oh = fh; | |
4061 | return fdh; | |
8387904d AM |
4062 | } |
4063 | ||
8c5b4e52 | 4064 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4065 | |
4066 | static struct ppc_link_hash_entry * | |
4067 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4068 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4069 | { |
8c5b4e52 AM |
4070 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4071 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4072 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4073 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4074 | ? BSF_WEAK | |
4075 | : BSF_GLOBAL); | |
4076 | ||
4077 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4078 | fh->elf.root.root.string + 1, | |
4079 | flags, bfd_und_section_ptr, 0, | |
4080 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
4081 | return NULL; |
4082 | ||
4083 | fdh = (struct ppc_link_hash_entry *) bh; | |
4084 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4085 | fdh->fake = 1; |
4086 | fdh->is_func_descriptor = 1; | |
4087 | fdh->oh = fh; | |
4088 | fh->is_func = 1; | |
4089 | fh->oh = fdh; | |
bb700d78 AM |
4090 | return fdh; |
4091 | } | |
4092 | ||
8387904d AM |
4093 | /* Fix function descriptor symbols defined in .opd sections to be |
4094 | function type. */ | |
555cd476 AM |
4095 | |
4096 | static bfd_boolean | |
c16153ae | 4097 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4098 | struct bfd_link_info *info, |
555cd476 | 4099 | Elf_Internal_Sym *isym, |
6911b7dc | 4100 | const char **name, |
555cd476 AM |
4101 | flagword *flags ATTRIBUTE_UNUSED, |
4102 | asection **sec, | |
b53dfeb2 | 4103 | bfd_vma *value) |
555cd476 | 4104 | { |
b53dfeb2 | 4105 | if (*sec != NULL |
f1885d1e | 4106 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4107 | { |
4108 | asection *code_sec; | |
4109 | ||
4110 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4111 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4112 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4113 | ||
4114 | /* If the symbol is a function defined in .opd, and the function | |
4115 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4116 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4117 | && (*sec)->reloc_count != 0 |
4118 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4119 | FALSE) != (bfd_vma) -1 | |
4120 | && discarded_section (code_sec)) | |
4121 | { | |
4122 | *sec = bfd_und_section_ptr; | |
4123 | isym->st_shndx = SHN_UNDEF; | |
4124 | } | |
4125 | } | |
dbd1e97e AM |
4126 | else if (*sec != NULL |
4127 | && strcmp ((*sec)->name, ".toc") == 0 | |
4128 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4129 | { | |
4130 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4131 | if (htab != NULL) | |
4132 | htab->params->object_in_toc = 1; | |
4133 | } | |
433817dd | 4134 | |
6911b7dc AM |
4135 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4136 | { | |
4137 | if (abiversion (ibfd) == 0) | |
4138 | set_abiversion (ibfd, 2); | |
4139 | else if (abiversion (ibfd) == 1) | |
4140 | { | |
cf97bcb0 AM |
4141 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4142 | " for ABI version 1"), *name); | |
6911b7dc AM |
4143 | bfd_set_error (bfd_error_bad_value); |
4144 | return FALSE; | |
4145 | } | |
4146 | } | |
4147 | ||
555cd476 AM |
4148 | return TRUE; |
4149 | } | |
4150 | ||
6911b7dc AM |
4151 | /* Merge non-visibility st_other attributes: local entry point. */ |
4152 | ||
4153 | static void | |
4154 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4155 | const Elf_Internal_Sym *isym, | |
4156 | bfd_boolean definition, | |
4157 | bfd_boolean dynamic) | |
4158 | { | |
f378ab09 | 4159 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
4160 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
4161 | | ELF_ST_VISIBILITY (h->other)); | |
4162 | } | |
4163 | ||
8c5b4e52 AM |
4164 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4165 | we now have a real symbol. */ | |
4166 | ||
4167 | static bfd_boolean | |
4168 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4169 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4170 | asection **psec ATTRIBUTE_UNUSED, |
4171 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4172 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4173 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4174 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4175 | { | |
ed7007c1 | 4176 | ppc_elf_hash_entry (h)->fake = 0; |
8b5f1ed8 | 4177 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
ed7007c1 | 4178 | ppc_elf_hash_entry (h)->non_zero_localentry = 1; |
8c5b4e52 AM |
4179 | return TRUE; |
4180 | } | |
4181 | ||
8387904d | 4182 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4183 | inclusion of a new ABI object archive that defines "bar". |
4184 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4185 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4186 | |
4187 | static struct elf_link_hash_entry * | |
4188 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4189 | struct bfd_link_info *info, | |
4190 | const char *name) | |
4191 | { | |
4192 | struct elf_link_hash_entry *h; | |
4193 | char *dot_name; | |
4194 | size_t len; | |
4195 | ||
4196 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4197 | if (h != NULL |
4198 | /* Don't return this sym if it is a fake function descriptor | |
4199 | created by add_symbol_adjust. */ | |
ed7007c1 | 4200 | && !ppc_elf_hash_entry (h)->fake) |
8387904d AM |
4201 | return h; |
4202 | ||
4203 | if (name[0] == '.') | |
4204 | return h; | |
4205 | ||
4206 | len = strlen (name); | |
4207 | dot_name = bfd_alloc (abfd, len + 2); | |
4208 | if (dot_name == NULL) | |
e99955cd | 4209 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4210 | dot_name[0] = '.'; |
4211 | memcpy (dot_name + 1, name, len + 1); | |
4212 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4213 | bfd_release (abfd, dot_name); | |
a804e476 AM |
4214 | if (h != NULL) |
4215 | return h; | |
4216 | ||
4217 | if (strcmp (name, "__tls_get_addr_opt") == 0) | |
4218 | h = _bfd_elf_archive_symbol_lookup (abfd, info, "__tls_get_addr_desc"); | |
8387904d AM |
4219 | return h; |
4220 | } | |
4221 | ||
4222 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4223 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4224 | are made weak. This stops later archive searches from including an | |
4225 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4226 | prevents the linker complaining about undefined symbols. |
4227 | We also check and correct mismatched symbol visibility here. The | |
4228 | most restrictive visibility of the function descriptor and the | |
4229 | function entry symbol is used. */ | |
8387904d AM |
4230 | |
4231 | static bfd_boolean | |
b3fac117 | 4232 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4233 | { |
8387904d AM |
4234 | struct ppc_link_hash_table *htab; |
4235 | struct ppc_link_hash_entry *fdh; | |
4236 | ||
b3fac117 AM |
4237 | if (eh->elf.root.type == bfd_link_hash_warning) |
4238 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4239 | |
8400d40d AM |
4240 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4241 | return TRUE; | |
4242 | ||
b3fac117 AM |
4243 | if (eh->elf.root.root.string[0] != '.') |
4244 | abort (); | |
8387904d | 4245 | |
b3fac117 | 4246 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4247 | if (htab == NULL) |
4248 | return FALSE; | |
4249 | ||
b31867b6 | 4250 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4251 | if (fdh == NULL |
4252 | && !bfd_link_relocatable (info) | |
4253 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4254 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4255 | && eh->elf.ref_regular) | |
4256 | { | |
4257 | /* Make an undefined function descriptor sym, in order to | |
4258 | pull in an --as-needed shared lib. Archives are handled | |
4259 | elsewhere. */ | |
4260 | fdh = make_fdh (info, eh); | |
4261 | if (fdh == NULL) | |
4262 | return FALSE; | |
bb700d78 | 4263 | } |
8c5b4e52 AM |
4264 | |
4265 | if (fdh != NULL) | |
8387904d | 4266 | { |
35b0ce59 AM |
4267 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4268 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4269 | |
4270 | /* Make both descriptor and entry symbol have the most | |
4271 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4272 | if (entry_vis < descr_vis) |
4273 | fdh->elf.other += entry_vis - descr_vis; | |
4274 | else if (entry_vis > descr_vis) | |
4275 | eh->elf.other += descr_vis - entry_vis; | |
4276 | ||
8c5b4e52 AM |
4277 | /* Propagate reference flags from entry symbol to function |
4278 | descriptor symbol. */ | |
bc4e12de | 4279 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4280 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4281 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4282 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4283 | ||
4284 | if (!fdh->elf.forced_local | |
4285 | && fdh->elf.dynindx == -1 | |
4286 | && fdh->elf.versioned != versioned_hidden | |
4287 | && (bfd_link_dll (info) | |
4288 | || fdh->elf.def_dynamic | |
4289 | || fdh->elf.ref_dynamic) | |
4290 | && (eh->elf.ref_regular | |
4291 | || eh->elf.def_regular)) | |
4292 | { | |
2cdcc330 | 4293 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4294 | return FALSE; |
35b0ce59 | 4295 | } |
8387904d | 4296 | } |
99877b66 | 4297 | |
8387904d AM |
4298 | return TRUE; |
4299 | } | |
4300 | ||
f6c7c3e8 AM |
4301 | /* Set up opd section info and abiversion for IBFD, and process list |
4302 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4303 | |
8387904d | 4304 | static bfd_boolean |
f6c7c3e8 | 4305 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4306 | { |
99877b66 | 4307 | struct ppc_link_hash_table *htab; |
b3fac117 | 4308 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4309 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4310 | |
459609d6 | 4311 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4312 | { |
b9399fcf AM |
4313 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4314 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4315 | ||
459609d6 AM |
4316 | if (abiversion (ibfd) == 0) |
4317 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4318 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4319 | { |
695344c0 | 4320 | /* xgettext:c-format */ |
cf97bcb0 AM |
4321 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4322 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4323 | bfd_set_error (bfd_error_bad_value); |
4324 | return FALSE; | |
f6c7c3e8 | 4325 | } |
b9399fcf | 4326 | } |
f6c7c3e8 | 4327 | |
b9399fcf AM |
4328 | if (is_ppc64_elf (info->output_bfd)) |
4329 | { | |
4330 | /* For input files without an explicit abiversion in e_flags | |
4331 | we should have flagged any with symbol st_other bits set | |
4332 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4333 | Set the output abiversion if not yet set, and for any input | |
4334 | still ambiguous, take its abiversion from the output. | |
4335 | Differences in ABI are reported later. */ | |
4336 | if (abiversion (info->output_bfd) == 0) | |
4337 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4338 | else if (abiversion (ibfd) == 0) | |
4339 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4340 | } |
4341 | ||
459609d6 AM |
4342 | htab = ppc_hash_table (info); |
4343 | if (htab == NULL) | |
b9399fcf | 4344 | return TRUE; |
459609d6 | 4345 | |
b9399fcf AM |
4346 | if (opd != NULL && opd->size != 0 |
4347 | && (ibfd->flags & DYNAMIC) == 0 | |
4348 | && (opd->flags & SEC_RELOC) != 0 | |
4349 | && opd->reloc_count != 0 | |
4350 | && !bfd_is_abs_section (opd->output_section) | |
4351 | && info->gc_sections) | |
4352 | { | |
4353 | /* Garbage collection needs some extra help with .opd sections. | |
4354 | We don't want to necessarily keep everything referenced by | |
4355 | relocs in .opd, as that would keep all functions. Instead, | |
4356 | if we reference an .opd symbol (a function descriptor), we | |
4357 | want to keep the function code symbol's section. This is | |
4358 | easy for global symbols, but for local syms we need to keep | |
4359 | information about the associated function section. */ | |
4360 | bfd_size_type amt; | |
4361 | asection **opd_sym_map; | |
4362 | Elf_Internal_Shdr *symtab_hdr; | |
4363 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4364 | ||
4365 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4366 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4367 | if (opd_sym_map == NULL) | |
4368 | return FALSE; | |
4369 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4370 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4371 | info->keep_memory); | |
4372 | if (relocs == NULL) | |
4373 | return FALSE; | |
4374 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4375 | rel_end = relocs + opd->reloc_count - 1; | |
4376 | for (rel = relocs; rel < rel_end; rel++) | |
4377 | { | |
4378 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4379 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4380 | ||
4381 | if (r_type == R_PPC64_ADDR64 | |
4382 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4383 | && r_symndx < symtab_hdr->sh_info) | |
4384 | { | |
4385 | Elf_Internal_Sym *isym; | |
4386 | asection *s; | |
4387 | ||
f1dfbfdb L |
4388 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, |
4389 | r_symndx); | |
b9399fcf AM |
4390 | if (isym == NULL) |
4391 | { | |
4392 | if (elf_section_data (opd)->relocs != relocs) | |
4393 | free (relocs); | |
4394 | return FALSE; | |
4395 | } | |
4396 | ||
4397 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4398 | if (s != NULL && s != opd) | |
4399 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4400 | } | |
4401 | } | |
4402 | if (elf_section_data (opd)->relocs != relocs) | |
4403 | free (relocs); | |
4404 | } | |
459609d6 AM |
4405 | |
4406 | p = &htab->dot_syms; | |
4407 | while ((eh = *p) != NULL) | |
4408 | { | |
4409 | *p = NULL; | |
4410 | if (&eh->elf == htab->elf.hgot) | |
4411 | ; | |
4412 | else if (htab->elf.hgot == NULL | |
4413 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4414 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4415 | else if (abiversion (ibfd) <= 1) |
4416 | { | |
4417 | htab->need_func_desc_adj = 1; | |
4418 | if (!add_symbol_adjust (eh, info)) | |
4419 | return FALSE; | |
4420 | } | |
459609d6 AM |
4421 | p = &eh->u.next_dot_sym; |
4422 | } | |
b3fac117 | 4423 | return TRUE; |
8387904d AM |
4424 | } |
4425 | ||
97fed1c9 JJ |
4426 | /* Undo hash table changes when an --as-needed input file is determined |
4427 | not to be needed. */ | |
4428 | ||
4429 | static bfd_boolean | |
e5034e59 AM |
4430 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4431 | struct bfd_link_info *info, | |
4432 | enum notice_asneeded_action act) | |
97fed1c9 | 4433 | { |
e5034e59 AM |
4434 | if (act == notice_not_needed) |
4435 | { | |
4436 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4437 | |
e5034e59 AM |
4438 | if (htab == NULL) |
4439 | return FALSE; | |
4dfe6ac6 | 4440 | |
e5034e59 AM |
4441 | htab->dot_syms = NULL; |
4442 | } | |
4443 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4444 | } |
4445 | ||
aa374f67 AM |
4446 | /* If --just-symbols against a final linked binary, then assume we need |
4447 | toc adjusting stubs when calling functions defined there. */ | |
4448 | ||
4449 | static void | |
4450 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4451 | { | |
4452 | if ((sec->flags & SEC_CODE) != 0 | |
4453 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4454 | && is_ppc64_elf (sec->owner)) | |
4455 | { | |
2c3f079f AM |
4456 | if (abiversion (sec->owner) >= 2 |
4457 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4458 | sec->has_toc_reloc = 1; |
4459 | } | |
4460 | _bfd_elf_link_just_syms (sec, info); | |
4461 | } | |
4462 | ||
e054468f | 4463 | static struct plt_entry ** |
4ce794b7 AM |
4464 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4465 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4466 | { |
4467 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4468 | struct plt_entry **local_plt; |
f961d9dd | 4469 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4470 | |
4471 | if (local_got_ents == NULL) | |
4472 | { | |
4473 | bfd_size_type size = symtab_hdr->sh_info; | |
4474 | ||
e054468f AM |
4475 | size *= (sizeof (*local_got_ents) |
4476 | + sizeof (*local_plt) | |
4477 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4478 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4479 | if (local_got_ents == NULL) |
e054468f | 4480 | return NULL; |
411e1bfb AM |
4481 | elf_local_got_ents (abfd) = local_got_ents; |
4482 | } | |
4483 | ||
37da22e5 | 4484 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4485 | { |
4486 | struct got_entry *ent; | |
4487 | ||
4488 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4489 | if (ent->addend == r_addend |
4490 | && ent->owner == abfd | |
4491 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4492 | break; |
4493 | if (ent == NULL) | |
4494 | { | |
986f0783 | 4495 | size_t amt = sizeof (*ent); |
4ce794b7 | 4496 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4497 | if (ent == NULL) |
4498 | return FALSE; | |
4499 | ent->next = local_got_ents[r_symndx]; | |
4500 | ent->addend = r_addend; | |
e717da7e | 4501 | ent->owner = abfd; |
411e1bfb | 4502 | ent->tls_type = tls_type; |
927be08e | 4503 | ent->is_indirect = FALSE; |
411e1bfb AM |
4504 | ent->got.refcount = 0; |
4505 | local_got_ents[r_symndx] = ent; | |
4506 | } | |
4507 | ent->got.refcount += 1; | |
4508 | } | |
4509 | ||
e054468f | 4510 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4511 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4512 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4513 | |
4514 | return local_plt + r_symndx; | |
65f38f15 AM |
4515 | } |
4516 | ||
411e1bfb | 4517 | static bfd_boolean |
e054468f | 4518 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4519 | { |
411e1bfb | 4520 | struct plt_entry *ent; |
1e2f5b6e | 4521 | |
e054468f | 4522 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4523 | if (ent->addend == addend) |
4524 | break; | |
4525 | if (ent == NULL) | |
1e2f5b6e | 4526 | { |
986f0783 | 4527 | size_t amt = sizeof (*ent); |
4ce794b7 | 4528 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4529 | if (ent == NULL) |
4530 | return FALSE; | |
e054468f | 4531 | ent->next = *plist; |
411e1bfb AM |
4532 | ent->addend = addend; |
4533 | ent->plt.refcount = 0; | |
e054468f | 4534 | *plist = ent; |
1e2f5b6e | 4535 | } |
411e1bfb | 4536 | ent->plt.refcount += 1; |
b34976b6 | 4537 | return TRUE; |
1e2f5b6e AM |
4538 | } |
4539 | ||
e054468f AM |
4540 | static bfd_boolean |
4541 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4542 | { | |
4543 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4544 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4545 | || r_type == R_PPC64_REL14 |
4546 | || r_type == R_PPC64_REL14_BRTAKEN | |
4547 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4548 | || r_type == R_PPC64_ADDR24 | |
4549 | || r_type == R_PPC64_ADDR14 | |
4550 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4551 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4552 | || r_type == R_PPC64_PLTCALL |
4553 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4554 | } |
4555 | ||
4556 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4557 | ||
4558 | static bfd_boolean | |
4559 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4560 | { | |
4561 | return (r_type == R_PPC64_PLT16_HA | |
4562 | || r_type == R_PPC64_PLT16_HI | |
4563 | || r_type == R_PPC64_PLT16_LO | |
4564 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4565 | || r_type == R_PPC64_PLT_PCREL34 |
4566 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4567 | || r_type == R_PPC64_PLTSEQ | |
4568 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4569 | } |
4570 | ||
5bd4f169 | 4571 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4572 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4573 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4574 | |
b34976b6 | 4575 | static bfd_boolean |
4ce794b7 AM |
4576 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4577 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4578 | { |
65f38f15 | 4579 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4580 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4581 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4582 | const Elf_Internal_Rela *rel; |
4583 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4584 | asection *sreloc; |
3a71aa26 | 4585 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4586 | bfd_boolean is_opd; |
5bd4f169 | 4587 | |
0e1862bb | 4588 | if (bfd_link_relocatable (info)) |
b34976b6 | 4589 | return TRUE; |
5bd4f169 | 4590 | |
0c8d6e5c | 4591 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4592 | |
65f38f15 | 4593 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4594 | if (htab == NULL) |
4595 | return FALSE; | |
4596 | ||
3a71aa26 AM |
4597 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4598 | FALSE, FALSE, TRUE); | |
4599 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4600 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4601 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4602 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4603 | sreloc = NULL; |
b9399fcf | 4604 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4605 | rel_end = relocs + sec->reloc_count; |
4606 | for (rel = relocs; rel < rel_end; rel++) | |
4607 | { | |
4608 | unsigned long r_symndx; | |
4609 | struct elf_link_hash_entry *h; | |
04c9666a | 4610 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4611 | int tls_type; |
7c8fe5c4 | 4612 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4613 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4614 | |
4615 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4616 | if (r_symndx < symtab_hdr->sh_info) | |
4617 | h = NULL; | |
4618 | else | |
973a3492 L |
4619 | { |
4620 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4621 | h = elf_follow_link (h); |
1c865ab2 AM |
4622 | |
4623 | if (h == htab->elf.hgot) | |
4624 | sec->has_toc_reloc = 1; | |
973a3492 | 4625 | } |
5bd4f169 | 4626 | |
5663e321 AM |
4627 | r_type = ELF64_R_TYPE (rel->r_info); |
4628 | switch (r_type) | |
4629 | { | |
04bdff6a AM |
4630 | case R_PPC64_D34: |
4631 | case R_PPC64_D34_LO: | |
4632 | case R_PPC64_D34_HI30: | |
4633 | case R_PPC64_D34_HA30: | |
4634 | case R_PPC64_D28: | |
c213164a AM |
4635 | case R_PPC64_TPREL34: |
4636 | case R_PPC64_DTPREL34: | |
04bdff6a | 4637 | case R_PPC64_PCREL34: |
5663e321 | 4638 | case R_PPC64_GOT_PCREL34: |
87c69f97 AM |
4639 | case R_PPC64_GOT_TLSGD_PCREL34: |
4640 | case R_PPC64_GOT_TLSLD_PCREL34: | |
4641 | case R_PPC64_GOT_TPREL_PCREL34: | |
4642 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
4643 | case R_PPC64_PLT_PCREL34: |
4644 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a | 4645 | case R_PPC64_PCREL28: |
e10a07b3 | 4646 | htab->has_power10_relocs = 1; |
133a1f60 AM |
4647 | break; |
4648 | default: | |
5663e321 AM |
4649 | break; |
4650 | } | |
903b777d AM |
4651 | |
4652 | switch (r_type) | |
4653 | { | |
4654 | case R_PPC64_PLT16_HA: | |
4655 | case R_PPC64_GOT_TLSLD16_HA: | |
4656 | case R_PPC64_GOT_TLSGD16_HA: | |
4657 | case R_PPC64_GOT_TPREL16_HA: | |
4658 | case R_PPC64_GOT_DTPREL16_HA: | |
4659 | case R_PPC64_GOT16_HA: | |
4660 | case R_PPC64_TOC16_HA: | |
4661 | case R_PPC64_PLT16_LO: | |
4662 | case R_PPC64_PLT16_LO_DS: | |
4663 | case R_PPC64_GOT_TLSLD16_LO: | |
4664 | case R_PPC64_GOT_TLSGD16_LO: | |
4665 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4666 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4667 | case R_PPC64_GOT16_LO: | |
4668 | case R_PPC64_GOT16_LO_DS: | |
4669 | case R_PPC64_TOC16_LO: | |
4670 | case R_PPC64_TOC16_LO_DS: | |
4671 | case R_PPC64_GOT_PCREL34: | |
4672 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4673 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4674 | break; | |
4675 | default: | |
4676 | break; | |
4677 | } | |
4678 | ||
f749f26e | 4679 | ifunc = NULL; |
25f23106 AM |
4680 | if (h != NULL) |
4681 | { | |
4682 | if (h->type == STT_GNU_IFUNC) | |
4683 | { | |
4684 | h->needs_plt = 1; | |
4685 | ifunc = &h->plt.plist; | |
4686 | } | |
4687 | } | |
4688 | else | |
4689 | { | |
f1dfbfdb | 4690 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
25f23106 AM |
4691 | abfd, r_symndx); |
4692 | if (isym == NULL) | |
4693 | return FALSE; | |
4694 | ||
4695 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4696 | { | |
4697 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4698 | rel->r_addend, |
37da22e5 | 4699 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4700 | if (ifunc == NULL) |
4701 | return FALSE; | |
4702 | } | |
4703 | } | |
727fc41e | 4704 | |
f749f26e | 4705 | tls_type = 0; |
a33d1f77 | 4706 | switch (r_type) |
5bd4f169 | 4707 | { |
727fc41e AM |
4708 | case R_PPC64_TLSGD: |
4709 | case R_PPC64_TLSLD: | |
4710 | /* These special tls relocs tie a call to __tls_get_addr with | |
4711 | its parameter symbol. */ | |
37da22e5 | 4712 | if (h != NULL) |
ed7007c1 | 4713 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; |
37da22e5 AM |
4714 | else |
4715 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4716 | rel->r_addend, |
37da22e5 AM |
4717 | NON_GOT | TLS_TLS | TLS_MARK)) |
4718 | return FALSE; | |
4719 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4720 | break; |
4721 | ||
411e1bfb AM |
4722 | case R_PPC64_GOT_TLSLD16: |
4723 | case R_PPC64_GOT_TLSLD16_LO: | |
4724 | case R_PPC64_GOT_TLSLD16_HI: | |
4725 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 4726 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 4727 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4728 | goto dogottls; |
4729 | ||
4730 | case R_PPC64_GOT_TLSGD16: | |
4731 | case R_PPC64_GOT_TLSGD16_LO: | |
4732 | case R_PPC64_GOT_TLSGD16_HI: | |
4733 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 4734 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 4735 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4736 | goto dogottls; |
4737 | ||
4738 | case R_PPC64_GOT_TPREL16_DS: | |
4739 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4740 | case R_PPC64_GOT_TPREL16_HI: | |
4741 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 4742 | case R_PPC64_GOT_TPREL_PCREL34: |
7c8bbca5 | 4743 | if (bfd_link_dll (info)) |
411e1bfb AM |
4744 | info->flags |= DF_STATIC_TLS; |
4745 | tls_type = TLS_TLS | TLS_TPREL; | |
4746 | goto dogottls; | |
4747 | ||
4748 | case R_PPC64_GOT_DTPREL16_DS: | |
4749 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4750 | case R_PPC64_GOT_DTPREL16_HI: | |
4751 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 4752 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
4753 | tls_type = TLS_TLS | TLS_DTPREL; |
4754 | dogottls: | |
4755 | sec->has_tls_reloc = 1; | |
066f4018 | 4756 | goto dogot; |
411e1bfb | 4757 | |
903b777d AM |
4758 | case R_PPC64_GOT16: |
4759 | case R_PPC64_GOT16_LO: | |
4760 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4761 | case R_PPC64_GOT16_HA: |
903b777d | 4762 | case R_PPC64_GOT16_DS: |
066f4018 | 4763 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4764 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4765 | dogot: |
65f38f15 | 4766 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4767 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4768 | if (r_type == R_PPC64_GOT_TLSLD16 |
4769 | || r_type == R_PPC64_GOT_TLSGD16 | |
4770 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4771 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4772 | || r_type == R_PPC64_GOT16 | |
4773 | || r_type == R_PPC64_GOT16_DS) | |
4774 | { | |
4775 | htab->do_multi_toc = 1; | |
d77c8a4b | 4776 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4777 | } |
4778 | ||
e717da7e AM |
4779 | if (ppc64_elf_tdata (abfd)->got == NULL |
4780 | && !create_got_section (abfd, info)) | |
b34976b6 | 4781 | return FALSE; |
5bd4f169 AM |
4782 | |
4783 | if (h != NULL) | |
4784 | { | |
411e1bfb AM |
4785 | struct ppc_link_hash_entry *eh; |
4786 | struct got_entry *ent; | |
65f38f15 | 4787 | |
ed7007c1 | 4788 | eh = ppc_elf_hash_entry (h); |
411e1bfb | 4789 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) |
133a1f60 | 4790 | if (ent->addend == rel->r_addend |
e717da7e | 4791 | && ent->owner == abfd |
411e1bfb AM |
4792 | && ent->tls_type == tls_type) |
4793 | break; | |
4794 | if (ent == NULL) | |
5bd4f169 | 4795 | { |
986f0783 | 4796 | size_t amt = sizeof (*ent); |
4ce794b7 | 4797 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4798 | if (ent == NULL) |
b34976b6 | 4799 | return FALSE; |
411e1bfb | 4800 | ent->next = eh->elf.got.glist; |
133a1f60 | 4801 | ent->addend = rel->r_addend; |
e717da7e | 4802 | ent->owner = abfd; |
411e1bfb | 4803 | ent->tls_type = tls_type; |
927be08e | 4804 | ent->is_indirect = FALSE; |
411e1bfb AM |
4805 | ent->got.refcount = 0; |
4806 | eh->elf.got.glist = ent; | |
5bd4f169 | 4807 | } |
411e1bfb | 4808 | ent->got.refcount += 1; |
e7b938ca | 4809 | eh->tls_mask |= tls_type; |
5bd4f169 | 4810 | } |
411e1bfb AM |
4811 | else |
4812 | /* This is a global offset table entry for a local symbol. */ | |
4813 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4814 | rel->r_addend, tls_type)) |
411e1bfb | 4815 | return FALSE; |
5bd4f169 AM |
4816 | break; |
4817 | ||
5bd4f169 | 4818 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4819 | case R_PPC64_PLT16_HI: |
4820 | case R_PPC64_PLT16_LO: | |
08be3224 | 4821 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4822 | case R_PPC64_PLT_PCREL34: |
4823 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4824 | case R_PPC64_PLT32: |
4825 | case R_PPC64_PLT64: | |
cbf95972 AM |
4826 | /* This symbol requires a procedure linkage table entry. */ |
4827 | plt_list = ifunc; | |
4828 | if (h != NULL) | |
e054468f | 4829 | { |
e054468f AM |
4830 | h->needs_plt = 1; |
4831 | if (h->root.root.string[0] == '.' | |
4832 | && h->root.root.string[1] != '\0') | |
ed7007c1 AM |
4833 | ppc_elf_hash_entry (h)->is_func = 1; |
4834 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
cbf95972 AM |
4835 | plt_list = &h->plt.plist; |
4836 | } | |
4837 | if (plt_list == NULL) | |
2d7ad24e | 4838 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 4839 | rel->r_addend, |
2d7ad24e | 4840 | NON_GOT | PLT_KEEP); |
133a1f60 | 4841 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4842 | return FALSE; |
5bd4f169 AM |
4843 | break; |
4844 | ||
4845 | /* The following relocations don't need to propagate the | |
4846 | relocation if linking a shared object since they are | |
4847 | section relative. */ | |
4848 | case R_PPC64_SECTOFF: | |
4849 | case R_PPC64_SECTOFF_LO: | |
4850 | case R_PPC64_SECTOFF_HI: | |
4851 | case R_PPC64_SECTOFF_HA: | |
4852 | case R_PPC64_SECTOFF_DS: | |
4853 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4854 | case R_PPC64_DTPREL16: |
4855 | case R_PPC64_DTPREL16_LO: | |
4856 | case R_PPC64_DTPREL16_HI: | |
4857 | case R_PPC64_DTPREL16_HA: | |
4858 | case R_PPC64_DTPREL16_DS: | |
4859 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4860 | case R_PPC64_DTPREL16_HIGH: |
4861 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4862 | case R_PPC64_DTPREL16_HIGHER: |
4863 | case R_PPC64_DTPREL16_HIGHERA: | |
4864 | case R_PPC64_DTPREL16_HIGHEST: | |
4865 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4866 | break; |
4867 | ||
ad8e1ba5 | 4868 | /* Nor do these. */ |
25f23106 AM |
4869 | case R_PPC64_REL16: |
4870 | case R_PPC64_REL16_LO: | |
4871 | case R_PPC64_REL16_HI: | |
4872 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4873 | case R_PPC64_REL16_HIGH: |
4874 | case R_PPC64_REL16_HIGHA: | |
4875 | case R_PPC64_REL16_HIGHER: | |
4876 | case R_PPC64_REL16_HIGHERA: | |
4877 | case R_PPC64_REL16_HIGHEST: | |
4878 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4879 | case R_PPC64_REL16_HIGHER34: |
4880 | case R_PPC64_REL16_HIGHERA34: | |
4881 | case R_PPC64_REL16_HIGHEST34: | |
4882 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4883 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4884 | break; |
4885 | ||
45965137 AM |
4886 | /* Not supported as a dynamic relocation. */ |
4887 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4888 | if (bfd_link_pic (info)) |
45965137 AM |
4889 | { |
4890 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4891 | ppc_howto_init (); | |
695344c0 | 4892 | /* xgettext:c-format */ |
174d0a74 | 4893 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4894 | "in shared libraries and PIEs\n"), |
45965137 AM |
4895 | abfd, sec, rel->r_offset, |
4896 | ppc64_elf_howto_table[r_type]->name); | |
4897 | bfd_set_error (bfd_error_bad_value); | |
4898 | return FALSE; | |
4899 | } | |
4900 | break; | |
4901 | ||
ad8e1ba5 | 4902 | case R_PPC64_TOC16: |
33c0ec9d AM |
4903 | case R_PPC64_TOC16_DS: |
4904 | htab->do_multi_toc = 1; | |
d77c8a4b | 4905 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4906 | /* Fall through. */ |
ad8e1ba5 AM |
4907 | case R_PPC64_TOC16_LO: |
4908 | case R_PPC64_TOC16_HI: | |
4909 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4910 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4911 | sec->has_toc_reloc = 1; |
ec73ddcd | 4912 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
4913 | { |
4914 | /* We may need a copy reloc. */ | |
4915 | h->non_got_ref = 1; | |
4916 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
4917 | glibc ld.so as of 2019-08 will error out if one of | |
4918 | these relocations is emitted. */ | |
4919 | h->needs_copy = 1; | |
4920 | goto dodyn; | |
4921 | } | |
ad8e1ba5 AM |
4922 | break; |
4923 | ||
006589cf AM |
4924 | /* Marker reloc. */ |
4925 | case R_PPC64_ENTRY: | |
4926 | break; | |
4927 | ||
5bd4f169 AM |
4928 | /* This relocation describes the C++ object vtable hierarchy. |
4929 | Reconstruct it for later use during GC. */ | |
4930 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4931 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4932 | return FALSE; |
5bd4f169 AM |
4933 | break; |
4934 | ||
4935 | /* This relocation describes which C++ vtable entries are actually | |
4936 | used. Record for later use during GC. */ | |
4937 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4938 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4939 | return FALSE; |
5bd4f169 AM |
4940 | break; |
4941 | ||
721956f4 AM |
4942 | case R_PPC64_REL14: |
4943 | case R_PPC64_REL14_BRTAKEN: | |
4944 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4945 | { |
4946 | asection *dest = NULL; | |
4947 | ||
4948 | /* Heuristic: If jumping outside our section, chances are | |
4949 | we are going to need a stub. */ | |
4950 | if (h != NULL) | |
4951 | { | |
4952 | /* If the sym is weak it may be overridden later, so | |
4953 | don't assume we know where a weak sym lives. */ | |
4954 | if (h->root.type == bfd_link_hash_defined) | |
4955 | dest = h->root.u.def.section; | |
4956 | } | |
4957 | else | |
87d72d41 AM |
4958 | { |
4959 | Elf_Internal_Sym *isym; | |
4960 | ||
f1dfbfdb | 4961 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
4962 | abfd, r_symndx); |
4963 | if (isym == NULL) | |
4964 | return FALSE; | |
4965 | ||
4966 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4967 | } | |
4968 | ||
220c76dd | 4969 | if (dest != sec) |
7c8fe5c4 | 4970 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4971 | } |
3e04d765 AM |
4972 | goto rel24; |
4973 | ||
4974 | case R_PPC64_PLTCALL: | |
5663e321 | 4975 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4976 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4977 | /* Fall through. */ |
4978 | ||
5d1634d7 | 4979 | case R_PPC64_REL24: |
05d0e962 | 4980 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4981 | rel24: |
cbf95972 AM |
4982 | plt_list = ifunc; |
4983 | if (h != NULL) | |
5d1634d7 | 4984 | { |
e054468f AM |
4985 | h->needs_plt = 1; |
4986 | if (h->root.root.string[0] == '.' | |
4987 | && h->root.root.string[1] != '\0') | |
ed7007c1 | 4988 | ppc_elf_hash_entry (h)->is_func = 1; |
cbf95972 | 4989 | |
3a71aa26 | 4990 | if (h == tga || h == dottga) |
cbf95972 AM |
4991 | { |
4992 | sec->has_tls_reloc = 1; | |
4993 | if (rel != relocs | |
4994 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4995 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4996 | /* We have a new-style __tls_get_addr call with | |
4997 | a marker reloc. */ | |
4998 | ; | |
4999 | else | |
5000 | /* Mark this section as having an old-style call. */ | |
9737e8af | 5001 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
5002 | } |
5003 | plt_list = &h->plt.plist; | |
411e1bfb | 5004 | } |
cbf95972 AM |
5005 | |
5006 | /* We may need a .plt entry if the function this reloc | |
5007 | refers to is in a shared lib. */ | |
5008 | if (plt_list | |
133a1f60 | 5009 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 5010 | return FALSE; |
411e1bfb AM |
5011 | break; |
5012 | ||
cbf95972 AM |
5013 | case R_PPC64_ADDR14: |
5014 | case R_PPC64_ADDR14_BRNTAKEN: | |
5015 | case R_PPC64_ADDR14_BRTAKEN: | |
5016 | case R_PPC64_ADDR24: | |
5017 | goto dodyn; | |
5018 | ||
411e1bfb AM |
5019 | case R_PPC64_TPREL64: |
5020 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5021 | if (bfd_link_dll (info)) |
411e1bfb AM |
5022 | info->flags |= DF_STATIC_TLS; |
5023 | goto dotlstoc; | |
5024 | ||
5025 | case R_PPC64_DTPMOD64: | |
5026 | if (rel + 1 < rel_end | |
5027 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5028 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5029 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5030 | else |
951fd09b | 5031 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5032 | goto dotlstoc; |
5033 | ||
5034 | case R_PPC64_DTPREL64: | |
5035 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5036 | if (rel != relocs | |
5037 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5038 | && rel[-1].r_offset == rel->r_offset - 8) | |
5039 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5040 | Don't mark with TLS_DTPREL. */ | |
5041 | goto dodyn; | |
5042 | ||
5043 | dotlstoc: | |
5044 | sec->has_tls_reloc = 1; | |
5045 | if (h != NULL) | |
ed7007c1 | 5046 | ppc_elf_hash_entry (h)->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
5047 | else |
5048 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5049 | rel->r_addend, tls_type)) |
411e1bfb AM |
5050 | return FALSE; |
5051 | ||
7c8fe5c4 AM |
5052 | ppc64_sec = ppc64_elf_section_data (sec); |
5053 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5054 | { |
3a71aa26 AM |
5055 | bfd_size_type amt; |
5056 | ||
e7b938ca | 5057 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5058 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5059 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5060 | if (ppc64_sec->u.toc.symndx == NULL) | |
5061 | return FALSE; | |
5062 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5063 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5064 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5065 | return FALSE; |
7c8fe5c4 AM |
5066 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5067 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5068 | } |
5069 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 5070 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5071 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5072 | |
5073 | /* Mark the second slot of a GD or LD entry. | |
5074 | -1 to indicate GD and -2 to indicate LD. */ | |
5075 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5076 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5077 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5078 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5079 | goto dodyn; |
5080 | ||
411e1bfb AM |
5081 | case R_PPC64_TPREL16_HI: |
5082 | case R_PPC64_TPREL16_HA: | |
f9c6b907 AM |
5083 | case R_PPC64_TPREL16_HIGH: |
5084 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5085 | case R_PPC64_TPREL16_HIGHER: |
5086 | case R_PPC64_TPREL16_HIGHERA: | |
5087 | case R_PPC64_TPREL16_HIGHEST: | |
5088 | case R_PPC64_TPREL16_HIGHESTA: | |
252dcdf4 AM |
5089 | sec->has_tls_reloc = 1; |
5090 | /* Fall through. */ | |
c213164a | 5091 | case R_PPC64_TPREL34: |
252dcdf4 AM |
5092 | case R_PPC64_TPREL16: |
5093 | case R_PPC64_TPREL16_DS: | |
5094 | case R_PPC64_TPREL16_LO: | |
5095 | case R_PPC64_TPREL16_LO_DS: | |
7c8bbca5 AM |
5096 | if (bfd_link_dll (info)) |
5097 | info->flags |= DF_STATIC_TLS; | |
5098 | goto dodyn; | |
5d1634d7 | 5099 | |
e86ce104 | 5100 | case R_PPC64_ADDR64: |
b9399fcf | 5101 | if (is_opd |
1e2f5b6e | 5102 | && rel + 1 < rel_end |
4ce794b7 | 5103 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5104 | { |
8387904d | 5105 | if (h != NULL) |
ed7007c1 | 5106 | ppc_elf_hash_entry (h)->is_func = 1; |
1e2f5b6e | 5107 | } |
e86ce104 AM |
5108 | /* Fall through. */ |
5109 | ||
65f38f15 AM |
5110 | case R_PPC64_ADDR16: |
5111 | case R_PPC64_ADDR16_DS: | |
5112 | case R_PPC64_ADDR16_HA: | |
5113 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5114 | case R_PPC64_ADDR16_HIGH: |
5115 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5116 | case R_PPC64_ADDR16_HIGHER: |
5117 | case R_PPC64_ADDR16_HIGHERA: | |
5118 | case R_PPC64_ADDR16_HIGHEST: | |
5119 | case R_PPC64_ADDR16_HIGHESTA: | |
5120 | case R_PPC64_ADDR16_LO: | |
5121 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5122 | case R_PPC64_D34: |
5123 | case R_PPC64_D34_LO: | |
5124 | case R_PPC64_D34_HI30: | |
5125 | case R_PPC64_D34_HA30: | |
5126 | case R_PPC64_ADDR16_HIGHER34: | |
5127 | case R_PPC64_ADDR16_HIGHERA34: | |
5128 | case R_PPC64_ADDR16_HIGHEST34: | |
5129 | case R_PPC64_ADDR16_HIGHESTA34: | |
5130 | case R_PPC64_D28: | |
0e1862bb | 5131 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5132 | && rel->r_addend == 0) |
5133 | { | |
5134 | /* We may need a .plt entry if this reloc refers to a | |
5135 | function in a shared lib. */ | |
5663e321 | 5136 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
5137 | return FALSE; |
5138 | h->pointer_equality_needed = 1; | |
5139 | } | |
5140 | /* Fall through. */ | |
5141 | ||
5142 | case R_PPC64_REL30: | |
5143 | case R_PPC64_REL32: | |
5144 | case R_PPC64_REL64: | |
65f38f15 | 5145 | case R_PPC64_ADDR32: |
65f38f15 AM |
5146 | case R_PPC64_UADDR16: |
5147 | case R_PPC64_UADDR32: | |
5148 | case R_PPC64_UADDR64: | |
5bd4f169 | 5149 | case R_PPC64_TOC: |
ec73ddcd | 5150 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5151 | /* We may need a copy reloc. */ |
f5385ebf | 5152 | h->non_got_ref = 1; |
81848ca0 | 5153 | |
41bd81ab | 5154 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5155 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5156 | break; |
e86ce104 | 5157 | |
65f38f15 AM |
5158 | /* If we are creating a shared library, and this is a reloc |
5159 | against a global symbol, or a non PC relative reloc | |
5160 | against a local symbol, then we need to copy the reloc | |
5161 | into the shared library. However, if we are linking with | |
5162 | -Bsymbolic, we do not need to copy a reloc against a | |
5163 | global symbol which is defined in an object we are | |
5164 | including in the link (i.e., DEF_REGULAR is set). At | |
5165 | this point we have not seen all the input files, so it is | |
5166 | possible that DEF_REGULAR is not set now but will be set | |
5167 | later (it is never cleared). In case of a weak definition, | |
5168 | DEF_REGULAR may be cleared later by a strong definition in | |
5169 | a shared library. We account for that possibility below by | |
f4656909 | 5170 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5171 | table entry. A similar situation occurs when creating |
5172 | shared libraries and symbol visibility changes render the | |
5173 | symbol local. | |
5174 | ||
5175 | If on the other hand, we are creating an executable, we | |
5176 | may need to keep relocations for symbols satisfied by a | |
5177 | dynamic library if we manage to avoid copy relocs for the | |
5178 | symbol. */ | |
411e1bfb | 5179 | dodyn: |
ec73ddcd AM |
5180 | if ((h != NULL |
5181 | && (h->root.type == bfd_link_hash_defweak | |
5182 | || !h->def_regular)) | |
5183 | || (h != NULL | |
5184 | && !bfd_link_executable (info) | |
5185 | && !SYMBOLIC_BIND (info, h)) | |
5186 | || (bfd_link_pic (info) | |
5187 | && must_be_dyn_reloc (info, r_type)) | |
0e1862bb | 5188 | || (!bfd_link_pic (info) |
25f23106 | 5189 | && ifunc != NULL)) |
5bd4f169 | 5190 | { |
65f38f15 AM |
5191 | /* We must copy these reloc types into the output file. |
5192 | Create a reloc section in dynobj and make room for | |
5193 | this reloc. */ | |
5bd4f169 AM |
5194 | if (sreloc == NULL) |
5195 | { | |
83bac4b0 NC |
5196 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5197 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5198 | |
5bd4f169 | 5199 | if (sreloc == NULL) |
83bac4b0 | 5200 | return FALSE; |
5bd4f169 AM |
5201 | } |
5202 | ||
65f38f15 AM |
5203 | /* If this is a global symbol, we count the number of |
5204 | relocations we need for this symbol. */ | |
5205 | if (h != NULL) | |
5206 | { | |
19e08130 AM |
5207 | struct elf_dyn_relocs *p; |
5208 | struct elf_dyn_relocs **head; | |
5209 | ||
190eb1dd | 5210 | head = &h->dyn_relocs; |
19e08130 AM |
5211 | p = *head; |
5212 | if (p == NULL || p->sec != sec) | |
5213 | { | |
5214 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5215 | if (p == NULL) | |
5216 | return FALSE; | |
5217 | p->next = *head; | |
5218 | *head = p; | |
5219 | p->sec = sec; | |
5220 | p->count = 0; | |
5221 | p->pc_count = 0; | |
5222 | } | |
5223 | p->count += 1; | |
5224 | if (!must_be_dyn_reloc (info, r_type)) | |
5225 | p->pc_count += 1; | |
65f38f15 AM |
5226 | } |
5227 | else | |
5228 | { | |
ec338859 AM |
5229 | /* Track dynamic relocs needed for local syms too. |
5230 | We really need local syms available to do this | |
5231 | easily. Oh well. */ | |
19e08130 AM |
5232 | struct ppc_dyn_relocs *p; |
5233 | struct ppc_dyn_relocs **head; | |
5234 | bfd_boolean is_ifunc; | |
ec338859 | 5235 | asection *s; |
6edfbbad | 5236 | void *vpp; |
87d72d41 | 5237 | Elf_Internal_Sym *isym; |
6edfbbad | 5238 | |
f1dfbfdb | 5239 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
5240 | abfd, r_symndx); |
5241 | if (isym == NULL) | |
b34976b6 | 5242 | return FALSE; |
ec338859 | 5243 | |
87d72d41 AM |
5244 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5245 | if (s == NULL) | |
5246 | s = sec; | |
5247 | ||
6edfbbad | 5248 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5249 | head = (struct ppc_dyn_relocs **) vpp; |
5250 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5251 | p = *head; | |
5252 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5253 | p = p->next; | |
5254 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5255 | { | |
5256 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5257 | if (p == NULL) | |
5258 | return FALSE; | |
5259 | p->next = *head; | |
5260 | *head = p; | |
5261 | p->sec = sec; | |
5262 | p->ifunc = is_ifunc; | |
5263 | p->count = 0; | |
5264 | } | |
5265 | p->count += 1; | |
ec338859 | 5266 | } |
65f38f15 | 5267 | } |
5bd4f169 | 5268 | break; |
65f38f15 AM |
5269 | |
5270 | default: | |
96e0dda4 | 5271 | break; |
5bd4f169 AM |
5272 | } |
5273 | } | |
5274 | ||
b34976b6 | 5275 | return TRUE; |
5bd4f169 AM |
5276 | } |
5277 | ||
ee67d69a AM |
5278 | /* Merge backend specific data from an object file to the output |
5279 | object file when linking. */ | |
5280 | ||
5281 | static bfd_boolean | |
50e03d47 | 5282 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5283 | { |
50e03d47 | 5284 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5285 | unsigned long iflags, oflags; |
5286 | ||
5287 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5288 | return TRUE; | |
5289 | ||
5290 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5291 | return TRUE; | |
5292 | ||
50e03d47 | 5293 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5294 | return FALSE; |
5295 | ||
5296 | iflags = elf_elfheader (ibfd)->e_flags; | |
5297 | oflags = elf_elfheader (obfd)->e_flags; | |
5298 | ||
f6c7c3e8 | 5299 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5300 | { |
4eca0228 | 5301 | _bfd_error_handler |
695344c0 | 5302 | /* xgettext:c-format */ |
871b3ab2 | 5303 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5304 | bfd_set_error (bfd_error_bad_value); |
5305 | return FALSE; | |
5306 | } | |
f6c7c3e8 | 5307 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5308 | { |
4eca0228 | 5309 | _bfd_error_handler |
695344c0 | 5310 | /* xgettext:c-format */ |
871b3ab2 | 5311 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5312 | ibfd, iflags, oflags); |
5313 | bfd_set_error (bfd_error_bad_value); | |
5314 | return FALSE; | |
5315 | } | |
5316 | ||
4a91d0ba AM |
5317 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5318 | return FALSE; | |
005d79fd | 5319 | |
ee67d69a | 5320 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5321 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5322 | } |
5323 | ||
5324 | static bfd_boolean | |
5325 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5326 | { | |
5327 | /* Print normal ELF private data. */ | |
5328 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5329 | ||
5330 | if (elf_elfheader (abfd)->e_flags != 0) | |
5331 | { | |
5332 | FILE *file = ptr; | |
5333 | ||
ee67d69a AM |
5334 | fprintf (file, _("private flags = 0x%lx:"), |
5335 | elf_elfheader (abfd)->e_flags); | |
5336 | ||
5337 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5338 | fprintf (file, _(" [abiv%ld]"), | |
5339 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5340 | fputc ('\n', file); | |
5341 | } | |
5342 | ||
5343 | return TRUE; | |
5344 | } | |
5345 | ||
8387904d | 5346 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5347 | of the code entry point, and its section, which must be in the same |
5348 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5349 | |
5350 | static bfd_vma | |
5351 | opd_entry_value (asection *opd_sec, | |
5352 | bfd_vma offset, | |
5353 | asection **code_sec, | |
aef36ac1 AM |
5354 | bfd_vma *code_off, |
5355 | bfd_boolean in_code_sec) | |
8387904d AM |
5356 | { |
5357 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5358 | Elf_Internal_Rela *relocs; |
8387904d | 5359 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5360 | bfd_vma val; |
8387904d | 5361 | |
9f296da3 AM |
5362 | /* No relocs implies we are linking a --just-symbols object, or looking |
5363 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5364 | if (opd_sec->reloc_count == 0) |
5365 | { | |
729eabd5 | 5366 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5367 | |
729eabd5 AM |
5368 | if (contents == NULL) |
5369 | { | |
5370 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5371 | return (bfd_vma) -1; | |
5372 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5373 | } | |
ee1e4ede | 5374 | |
dbb3fbbb | 5375 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5376 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5377 | return (bfd_vma) -1; |
5378 | ||
729eabd5 | 5379 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5380 | if (code_sec != NULL) |
5381 | { | |
5382 | asection *sec, *likely = NULL; | |
ee1e4ede | 5383 | |
aef36ac1 | 5384 | if (in_code_sec) |
4b85d634 | 5385 | { |
aef36ac1 AM |
5386 | sec = *code_sec; |
5387 | if (sec->vma <= val | |
5388 | && val < sec->vma + sec->size) | |
5389 | likely = sec; | |
5390 | else | |
5391 | val = -1; | |
5392 | } | |
5393 | else | |
5394 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5395 | if (sec->vma <= val | |
5396 | && (sec->flags & SEC_LOAD) != 0 | |
5397 | && (sec->flags & SEC_ALLOC) != 0) | |
5398 | likely = sec; | |
5399 | if (likely != NULL) | |
5400 | { | |
5401 | *code_sec = likely; | |
5402 | if (code_off != NULL) | |
5403 | *code_off = val - likely->vma; | |
4b85d634 AM |
5404 | } |
5405 | } | |
aef36ac1 | 5406 | return val; |
4b85d634 AM |
5407 | } |
5408 | ||
0c8d6e5c | 5409 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5410 | |
729eabd5 | 5411 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5412 | if (relocs == NULL) |
5413 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5414 | /* PR 17512: file: df8e1fd6. */ |
5415 | if (relocs == NULL) | |
5416 | return (bfd_vma) -1; | |
645ea6a9 | 5417 | |
8387904d | 5418 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5419 | lo = relocs; |
8387904d | 5420 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5421 | val = (bfd_vma) -1; |
8387904d AM |
5422 | while (lo < hi) |
5423 | { | |
5424 | look = lo + (hi - lo) / 2; | |
5425 | if (look->r_offset < offset) | |
5426 | lo = look + 1; | |
5427 | else if (look->r_offset > offset) | |
5428 | hi = look; | |
5429 | else | |
5430 | { | |
0ffa91dd NC |
5431 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5432 | ||
8387904d AM |
5433 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5434 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5435 | { | |
5436 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5437 | asection *sec = NULL; |
8387904d | 5438 | |
b53dfeb2 AM |
5439 | if (symndx >= symtab_hdr->sh_info |
5440 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5441 | { |
5442 | struct elf_link_hash_entry **sym_hashes; | |
5443 | struct elf_link_hash_entry *rh; | |
5444 | ||
5445 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5446 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5447 | if (rh != NULL) |
5448 | { | |
5449 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5450 | if (rh->root.type != bfd_link_hash_defined |
5451 | && rh->root.type != bfd_link_hash_defweak) | |
5452 | break; | |
5453 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5454 | { |
bb854a36 AM |
5455 | val = rh->root.u.def.value; |
5456 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5457 | } |
5458 | } | |
5459 | } | |
5460 | ||
5461 | if (sec == NULL) | |
5462 | { | |
5463 | Elf_Internal_Sym *sym; | |
5464 | ||
5465 | if (symndx < symtab_hdr->sh_info) | |
5466 | { | |
5467 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5468 | if (sym == NULL) | |
5469 | { | |
5470 | size_t symcnt = symtab_hdr->sh_info; | |
5471 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5472 | symcnt, 0, | |
5473 | NULL, NULL, NULL); | |
5474 | if (sym == NULL) | |
5475 | break; | |
5476 | symtab_hdr->contents = (bfd_byte *) sym; | |
5477 | } | |
5478 | sym += symndx; | |
128205bb AM |
5479 | } |
5480 | else | |
5481 | { | |
b53dfeb2 AM |
5482 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5483 | 1, symndx, | |
5484 | NULL, NULL, NULL); | |
128205bb AM |
5485 | if (sym == NULL) |
5486 | break; | |
128205bb | 5487 | } |
b53dfeb2 AM |
5488 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5489 | if (sec == NULL) | |
5490 | break; | |
5491 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5492 | val = sym->st_value; | |
8387904d | 5493 | } |
b53dfeb2 | 5494 | |
8387904d AM |
5495 | val += look->r_addend; |
5496 | if (code_off != NULL) | |
5497 | *code_off = val; | |
5498 | if (code_sec != NULL) | |
aef36ac1 AM |
5499 | { |
5500 | if (in_code_sec && *code_sec != sec) | |
5501 | return -1; | |
5502 | else | |
5503 | *code_sec = sec; | |
5504 | } | |
b53dfeb2 | 5505 | if (sec->output_section != NULL) |
8387904d | 5506 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5507 | } |
5508 | break; | |
5509 | } | |
5510 | } | |
645ea6a9 | 5511 | |
645ea6a9 | 5512 | return val; |
8387904d AM |
5513 | } |
5514 | ||
aef36ac1 AM |
5515 | /* If the ELF symbol SYM might be a function in SEC, return the |
5516 | function size and set *CODE_OFF to the function's entry point, | |
5517 | otherwise return zero. */ | |
9f296da3 | 5518 | |
aef36ac1 AM |
5519 | static bfd_size_type |
5520 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5521 | bfd_vma *code_off) | |
9f296da3 | 5522 | { |
aef36ac1 AM |
5523 | bfd_size_type size; |
5524 | ||
5525 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5526 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5527 | return 0; | |
5528 | ||
5529 | size = 0; | |
5530 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5531 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5532 | ||
5533 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5534 | { |
b07bca4e AM |
5535 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5536 | bfd_vma symval = sym->value; | |
5537 | ||
5538 | if (opd != NULL | |
5539 | && opd->adjust != NULL | |
5540 | && elf_section_data (sym->section)->relocs != NULL) | |
5541 | { | |
5542 | /* opd_entry_value will use cached relocs that have been | |
5543 | adjusted, but with raw symbols. That means both local | |
5544 | and global symbols need adjusting. */ | |
5545 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5546 | if (adjust == -1) | |
5547 | return 0; | |
5548 | symval += adjust; | |
5549 | } | |
5550 | ||
5551 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5552 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5553 | return 0; | |
5554 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5555 | symbol. This size has nothing to do with the code size of the | |
5556 | function, which is what we're supposed to return, but the | |
5557 | code size isn't available without looking up the dot-sym. | |
5558 | However, doing that would be a waste of time particularly | |
5559 | since elf_find_function will look at the dot-sym anyway. | |
5560 | Now, elf_find_function will keep the largest size of any | |
5561 | function sym found at the code address of interest, so return | |
5562 | 1 here to avoid it incorrectly caching a larger function size | |
5563 | for a small function. This does mean we return the wrong | |
5564 | size for a new-ABI function of size 24, but all that does is | |
5565 | disable caching for such functions. */ | |
5566 | if (size == 24) | |
5567 | size = 1; | |
9f296da3 | 5568 | } |
aef36ac1 AM |
5569 | else |
5570 | { | |
5571 | if (sym->section != sec) | |
5572 | return 0; | |
5573 | *code_off = sym->value; | |
5574 | } | |
5575 | if (size == 0) | |
5576 | size = 1; | |
5577 | return size; | |
9f296da3 AM |
5578 | } |
5579 | ||
f378ab09 AM |
5580 | /* Return true if symbol is a strong function defined in an ELFv2 |
5581 | object with st_other localentry bits of zero, ie. its local entry | |
5582 | point coincides with its global entry point. */ | |
5583 | ||
5584 | static bfd_boolean | |
5585 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5586 | { | |
5587 | return (h != NULL | |
5588 | && h->type == STT_FUNC | |
5589 | && h->root.type == bfd_link_hash_defined | |
5590 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
ed7007c1 | 5591 | && !ppc_elf_hash_entry (h)->non_zero_localentry |
f378ab09 AM |
5592 | && is_ppc64_elf (h->root.u.def.section->owner) |
5593 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5594 | } | |
5595 | ||
854b41e7 AM |
5596 | /* Return true if symbol is defined in a regular object file. */ |
5597 | ||
5598 | static bfd_boolean | |
5599 | is_static_defined (struct elf_link_hash_entry *h) | |
5600 | { | |
5601 | return ((h->root.type == bfd_link_hash_defined | |
5602 | || h->root.type == bfd_link_hash_defweak) | |
5603 | && h->root.u.def.section != NULL | |
5604 | && h->root.u.def.section->output_section != NULL); | |
5605 | } | |
5606 | ||
b31867b6 AM |
5607 | /* If FDH is a function descriptor symbol, return the associated code |
5608 | entry symbol if it is defined. Return NULL otherwise. */ | |
5609 | ||
5610 | static struct ppc_link_hash_entry * | |
5611 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5612 | { | |
5613 | if (fdh->is_func_descriptor) | |
5614 | { | |
5615 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5616 | if (fh->elf.root.type == bfd_link_hash_defined | |
5617 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5618 | return fh; | |
5619 | } | |
5620 | return NULL; | |
5621 | } | |
5622 | ||
5623 | /* If FH is a function code entry symbol, return the associated | |
5624 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5625 | ||
5626 | static struct ppc_link_hash_entry * | |
5627 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5628 | { | |
5629 | if (fh->oh != NULL | |
5630 | && fh->oh->is_func_descriptor) | |
5631 | { | |
5632 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5633 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5634 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5635 | return fdh; | |
5636 | } | |
5637 | return NULL; | |
5638 | } | |
5639 | ||
ed7007c1 AM |
5640 | /* Given H is a symbol that satisfies is_static_defined, return the |
5641 | value in the output file. */ | |
5642 | ||
5643 | static bfd_vma | |
5644 | defined_sym_val (struct elf_link_hash_entry *h) | |
5645 | { | |
5646 | return (h->root.u.def.section->output_section->vma | |
5647 | + h->root.u.def.section->output_offset | |
5648 | + h->root.u.def.value); | |
5649 | } | |
5650 | ||
5651 | /* Return true if H matches __tls_get_addr or one of its variants. */ | |
5652 | ||
5653 | static bfd_boolean | |
5654 | is_tls_get_addr (struct elf_link_hash_entry *h, | |
5655 | struct ppc_link_hash_table *htab) | |
5656 | { | |
9e51d549 AM |
5657 | return (h == (struct elf_link_hash_entry *) htab->tls_get_addr_fd |
5658 | || h == (struct elf_link_hash_entry *) htab->tga_desc_fd | |
5659 | || h == (struct elf_link_hash_entry *) htab->tls_get_addr | |
5660 | || h == (struct elf_link_hash_entry *) htab->tga_desc); | |
ed7007c1 AM |
5661 | } |
5662 | ||
8c5b4e52 AM |
5663 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5664 | ||
5665 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5666 | ||
5667 | static bfd_boolean | |
5668 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5669 | { | |
5670 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5671 | ||
5672 | if (htab != NULL && htab->need_func_desc_adj) | |
5673 | { | |
5674 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5675 | htab->need_func_desc_adj = 0; | |
5676 | } | |
5677 | return bfd_elf_gc_sections (abfd, info); | |
5678 | } | |
5679 | ||
74f0fb50 AM |
5680 | /* Mark all our entry sym sections, both opd and code section. */ |
5681 | ||
5682 | static void | |
5683 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5684 | { | |
5685 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5686 | struct bfd_sym_chain *sym; | |
5687 | ||
4dfe6ac6 NC |
5688 | if (htab == NULL) |
5689 | return; | |
5690 | ||
74f0fb50 AM |
5691 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5692 | { | |
b31867b6 | 5693 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5694 | asection *sec; |
5695 | ||
ed7007c1 AM |
5696 | eh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym->name, |
5697 | FALSE, FALSE, TRUE)); | |
74f0fb50 AM |
5698 | if (eh == NULL) |
5699 | continue; | |
5700 | if (eh->elf.root.type != bfd_link_hash_defined | |
5701 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5702 | continue; | |
5703 | ||
b31867b6 AM |
5704 | fh = defined_code_entry (eh); |
5705 | if (fh != NULL) | |
74f0fb50 | 5706 | { |
b31867b6 | 5707 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5708 | sec->flags |= SEC_KEEP; |
5709 | } | |
5710 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5711 | && opd_entry_value (eh->elf.root.u.def.section, | |
5712 | eh->elf.root.u.def.value, | |
aef36ac1 | 5713 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5714 | sec->flags |= SEC_KEEP; |
5715 | ||
5716 | sec = eh->elf.root.u.def.section; | |
5717 | sec->flags |= SEC_KEEP; | |
5718 | } | |
5719 | } | |
5720 | ||
64d03ab5 AM |
5721 | /* Mark sections containing dynamically referenced symbols. When |
5722 | building shared libraries, we must assume that any visible symbol is | |
5723 | referenced. */ | |
5724 | ||
5725 | static bfd_boolean | |
5726 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5727 | { | |
5728 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
ed7007c1 | 5729 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
b31867b6 | 5730 | struct ppc_link_hash_entry *fdh; |
b407645f | 5731 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5732 | |
64d03ab5 | 5733 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5734 | fdh = defined_func_desc (eh); |
5735 | if (fdh != NULL) | |
5736 | eh = fdh; | |
64d03ab5 AM |
5737 | |
5738 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5739 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5740 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5741 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5742 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5743 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5744 | && (!bfd_link_executable (info) |
e278ae05 | 5745 | || info->gc_keep_exported |
b407645f AM |
5746 | || info->export_dynamic |
5747 | || (eh->elf.dynamic | |
5748 | && d != NULL | |
2cdcc330 AM |
5749 | && (*d->match) (&d->head, NULL, |
5750 | eh->elf.root.root.string))) | |
e278ae05 | 5751 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5752 | || !bfd_hide_sym_by_version (info->version_info, |
5753 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5754 | { |
5755 | asection *code_sec; | |
b31867b6 | 5756 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5757 | |
5758 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5759 | ||
5760 | /* Function descriptor syms cause the associated | |
5761 | function code sym section to be marked. */ | |
b31867b6 AM |
5762 | fh = defined_code_entry (eh); |
5763 | if (fh != NULL) | |
5764 | { | |
5765 | code_sec = fh->elf.root.u.def.section; | |
5766 | code_sec->flags |= SEC_KEEP; | |
5767 | } | |
64d03ab5 AM |
5768 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5769 | && opd_entry_value (eh->elf.root.u.def.section, | |
5770 | eh->elf.root.u.def.value, | |
aef36ac1 | 5771 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5772 | code_sec->flags |= SEC_KEEP; |
5773 | } | |
5774 | ||
5775 | return TRUE; | |
5776 | } | |
5777 | ||
5bd4f169 AM |
5778 | /* Return the section that should be marked against GC for a given |
5779 | relocation. */ | |
5780 | ||
5781 | static asection * | |
4ce794b7 | 5782 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5783 | struct bfd_link_info *info, |
4ce794b7 AM |
5784 | Elf_Internal_Rela *rel, |
5785 | struct elf_link_hash_entry *h, | |
5786 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5787 | { |
ccfa59ea AM |
5788 | asection *rsec; |
5789 | ||
ccfa59ea AM |
5790 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5791 | function sections, as all functions are referenced in .opd. */ | |
5792 | rsec = NULL; | |
5793 | if (get_opd_info (sec) != NULL) | |
5794 | return rsec; | |
1e2f5b6e | 5795 | |
5bd4f169 AM |
5796 | if (h != NULL) |
5797 | { | |
04c9666a | 5798 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5799 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5800 | |
4ce794b7 | 5801 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5802 | switch (r_type) |
5bd4f169 AM |
5803 | { |
5804 | case R_PPC64_GNU_VTINHERIT: | |
5805 | case R_PPC64_GNU_VTENTRY: | |
5806 | break; | |
5807 | ||
5808 | default: | |
5809 | switch (h->root.type) | |
5810 | { | |
5811 | case bfd_link_hash_defined: | |
5812 | case bfd_link_hash_defweak: | |
ed7007c1 | 5813 | eh = ppc_elf_hash_entry (h); |
b31867b6 AM |
5814 | fdh = defined_func_desc (eh); |
5815 | if (fdh != NULL) | |
8c5b4e52 AM |
5816 | { |
5817 | /* -mcall-aixdesc code references the dot-symbol on | |
5818 | a call reloc. Mark the function descriptor too | |
5819 | against garbage collection. */ | |
5820 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5821 | if (fdh->elf.is_weakalias) |
5822 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5823 | eh = fdh; |
5824 | } | |
1e2f5b6e AM |
5825 | |
5826 | /* Function descriptor syms cause the associated | |
5827 | function code sym section to be marked. */ | |
b31867b6 AM |
5828 | fh = defined_code_entry (eh); |
5829 | if (fh != NULL) | |
ccfa59ea AM |
5830 | { |
5831 | /* They also mark their opd section. */ | |
74f0fb50 | 5832 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5833 | |
b31867b6 | 5834 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5835 | } |
8387904d AM |
5836 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5837 | && opd_entry_value (eh->elf.root.u.def.section, | |
5838 | eh->elf.root.u.def.value, | |
aef36ac1 | 5839 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5840 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5841 | else |
1e2f5b6e AM |
5842 | rsec = h->root.u.def.section; |
5843 | break; | |
5bd4f169 AM |
5844 | |
5845 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5846 | rsec = h->root.u.c.p->section; |
5847 | break; | |
5bd4f169 AM |
5848 | |
5849 | default: | |
fb34365b | 5850 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5851 | } |
5852 | } | |
5853 | } | |
5854 | else | |
5855 | { | |
74f0fb50 | 5856 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5857 | |
5858 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5859 | opd = get_opd_info (rsec); |
5860 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5861 | { |
74f0fb50 | 5862 | rsec->gc_mark = 1; |
ccfa59ea | 5863 | |
51aecdc5 | 5864 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5865 | } |
5bd4f169 AM |
5866 | } |
5867 | ||
1e2f5b6e | 5868 | return rsec; |
5bd4f169 AM |
5869 | } |
5870 | ||
deb0e272 AM |
5871 | /* The maximum size of .sfpr. */ |
5872 | #define SFPR_MAX (218*4) | |
5873 | ||
5874 | struct sfpr_def_parms | |
5875 | { | |
699733f6 AM |
5876 | const char name[12]; |
5877 | unsigned char lo, hi; | |
2cdcc330 AM |
5878 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5879 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5880 | }; |
5881 | ||
a4b6fadd AM |
5882 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5883 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5884 | instead. */ | |
deb0e272 | 5885 | |
4dfe6ac6 | 5886 | static bfd_boolean |
a4b6fadd AM |
5887 | sfpr_define (struct bfd_link_info *info, |
5888 | const struct sfpr_def_parms *parm, | |
5889 | asection *stub_sec) | |
deb0e272 AM |
5890 | { |
5891 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5892 | unsigned int i; | |
5893 | size_t len = strlen (parm->name); | |
5894 | bfd_boolean writing = FALSE; | |
699733f6 | 5895 | char sym[16]; |
deb0e272 | 5896 | |
4dfe6ac6 NC |
5897 | if (htab == NULL) |
5898 | return FALSE; | |
5899 | ||
deb0e272 AM |
5900 | memcpy (sym, parm->name, len); |
5901 | sym[len + 2] = 0; | |
5902 | ||
5903 | for (i = parm->lo; i <= parm->hi; i++) | |
5904 | { | |
a4b6fadd | 5905 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5906 | |
5907 | sym[len + 0] = i / 10 + '0'; | |
5908 | sym[len + 1] = i % 10 + '0'; | |
ed7007c1 AM |
5909 | h = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym, |
5910 | writing, TRUE, TRUE)); | |
a4b6fadd | 5911 | if (stub_sec != NULL) |
deb0e272 | 5912 | { |
a4b6fadd AM |
5913 | if (h != NULL |
5914 | && h->elf.root.type == bfd_link_hash_defined | |
5915 | && h->elf.root.u.def.section == htab->sfpr) | |
5916 | { | |
5917 | struct elf_link_hash_entry *s; | |
5918 | char buf[32]; | |
5919 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5920 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5921 | if (s == NULL) | |
5922 | return FALSE; | |
779f2ae7 | 5923 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
5924 | { |
5925 | s->root.type = bfd_link_hash_defined; | |
5926 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5927 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5928 | + h->elf.root.u.def.value); |
5929 | s->ref_regular = 1; | |
5930 | s->def_regular = 1; | |
5931 | s->ref_regular_nonweak = 1; | |
5932 | s->forced_local = 1; | |
5933 | s->non_elf = 0; | |
5934 | s->root.linker_def = 1; | |
5935 | } | |
5936 | } | |
5937 | continue; | |
5938 | } | |
5939 | if (h != NULL) | |
5940 | { | |
5941 | h->save_res = 1; | |
5942 | if (!h->elf.def_regular) | |
deb0e272 | 5943 | { |
a4b6fadd AM |
5944 | h->elf.root.type = bfd_link_hash_defined; |
5945 | h->elf.root.u.def.section = htab->sfpr; | |
5946 | h->elf.root.u.def.value = htab->sfpr->size; | |
5947 | h->elf.type = STT_FUNC; | |
5948 | h->elf.def_regular = 1; | |
b32547cd | 5949 | h->elf.non_elf = 0; |
a4b6fadd AM |
5950 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5951 | writing = TRUE; | |
deb0e272 | 5952 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5953 | { |
2cdcc330 AM |
5954 | htab->sfpr->contents |
5955 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5956 | if (htab->sfpr->contents == NULL) |
5957 | return FALSE; | |
5958 | } | |
deb0e272 AM |
5959 | } |
5960 | } | |
5961 | if (writing) | |
5962 | { | |
5963 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5964 | if (i != parm->hi) | |
5965 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5966 | else | |
5967 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5968 | htab->sfpr->size = p - htab->sfpr->contents; | |
5969 | } | |
5970 | } | |
5971 | ||
5972 | return TRUE; | |
5973 | } | |
5974 | ||
5975 | static bfd_byte * | |
5976 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5977 | { | |
5978 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5979 | return p + 4; | |
5980 | } | |
5981 | ||
5982 | static bfd_byte * | |
5983 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5984 | { | |
5985 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5986 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5987 | p = p + 4; |
5988 | bfd_put_32 (abfd, BLR, p); | |
5989 | return p + 4; | |
5990 | } | |
5991 | ||
5992 | static bfd_byte * | |
5993 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5994 | { | |
5995 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5996 | return p + 4; | |
5997 | } | |
5998 | ||
5999 | static bfd_byte * | |
6000 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6001 | { | |
a078d95a | 6002 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6003 | p = p + 4; |
6004 | p = restgpr0 (abfd, p, r); | |
6005 | bfd_put_32 (abfd, MTLR_R0, p); | |
6006 | p = p + 4; | |
6007 | if (r == 29) | |
6008 | { | |
6009 | p = restgpr0 (abfd, p, 30); | |
6010 | p = restgpr0 (abfd, p, 31); | |
6011 | } | |
6012 | bfd_put_32 (abfd, BLR, p); | |
6013 | return p + 4; | |
6014 | } | |
6015 | ||
6016 | static bfd_byte * | |
6017 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6018 | { | |
6019 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6020 | return p + 4; | |
6021 | } | |
6022 | ||
6023 | static bfd_byte * | |
6024 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6025 | { | |
6026 | p = savegpr1 (abfd, p, r); | |
6027 | bfd_put_32 (abfd, BLR, p); | |
6028 | return p + 4; | |
6029 | } | |
6030 | ||
6031 | static bfd_byte * | |
6032 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6033 | { | |
6034 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6035 | return p + 4; | |
6036 | } | |
6037 | ||
6038 | static bfd_byte * | |
6039 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6040 | { | |
6041 | p = restgpr1 (abfd, p, r); | |
6042 | bfd_put_32 (abfd, BLR, p); | |
6043 | return p + 4; | |
6044 | } | |
6045 | ||
6046 | static bfd_byte * | |
6047 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6048 | { | |
6049 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6050 | return p + 4; | |
6051 | } | |
6052 | ||
6053 | static bfd_byte * | |
6054 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6055 | { | |
6056 | p = savefpr (abfd, p, r); | |
a078d95a | 6057 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6058 | p = p + 4; |
6059 | bfd_put_32 (abfd, BLR, p); | |
6060 | return p + 4; | |
6061 | } | |
6062 | ||
6063 | static bfd_byte * | |
6064 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6065 | { | |
6066 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6067 | return p + 4; | |
6068 | } | |
6069 | ||
6070 | static bfd_byte * | |
6071 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6072 | { | |
a078d95a | 6073 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6074 | p = p + 4; |
6075 | p = restfpr (abfd, p, r); | |
6076 | bfd_put_32 (abfd, MTLR_R0, p); | |
6077 | p = p + 4; | |
6078 | if (r == 29) | |
6079 | { | |
6080 | p = restfpr (abfd, p, 30); | |
6081 | p = restfpr (abfd, p, 31); | |
6082 | } | |
6083 | bfd_put_32 (abfd, BLR, p); | |
6084 | return p + 4; | |
6085 | } | |
6086 | ||
6087 | static bfd_byte * | |
6088 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6089 | { | |
6090 | p = savefpr (abfd, p, r); | |
6091 | bfd_put_32 (abfd, BLR, p); | |
6092 | return p + 4; | |
6093 | } | |
6094 | ||
6095 | static bfd_byte * | |
6096 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6097 | { | |
6098 | p = restfpr (abfd, p, r); | |
6099 | bfd_put_32 (abfd, BLR, p); | |
6100 | return p + 4; | |
6101 | } | |
6102 | ||
6103 | static bfd_byte * | |
6104 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6105 | { | |
6106 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6107 | p = p + 4; | |
6108 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6109 | return p + 4; | |
6110 | } | |
6111 | ||
6112 | static bfd_byte * | |
6113 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6114 | { | |
6115 | p = savevr (abfd, p, r); | |
6116 | bfd_put_32 (abfd, BLR, p); | |
6117 | return p + 4; | |
6118 | } | |
6119 | ||
6120 | static bfd_byte * | |
6121 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6122 | { | |
6123 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6124 | p = p + 4; | |
6125 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6126 | return p + 4; | |
6127 | } | |
6128 | ||
6129 | static bfd_byte * | |
6130 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6131 | { | |
6132 | p = restvr (abfd, p, r); | |
6133 | bfd_put_32 (abfd, BLR, p); | |
6134 | return p + 4; | |
6135 | } | |
6136 | ||
9e7028aa AM |
6137 | #define STDU_R1_0R1 0xf8210001 |
6138 | #define ADDI_R1_R1 0x38210000 | |
6139 | ||
6140 | /* Emit prologue of wrapper preserving regs around a call to | |
6141 | __tls_get_addr_opt. */ | |
6142 | ||
6143 | static bfd_byte * | |
6144 | tls_get_addr_prologue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6145 | { | |
6146 | unsigned int i; | |
6147 | ||
6148 | bfd_put_32 (obfd, MFLR_R0, p); | |
6149 | p += 4; | |
6150 | bfd_put_32 (obfd, STD_R0_0R1 + 16, p); | |
6151 | p += 4; | |
6152 | ||
6153 | if (htab->opd_abi) | |
6154 | { | |
6155 | for (i = 4; i < 12; i++) | |
6156 | { | |
6157 | bfd_put_32 (obfd, | |
6158 | STD_R0_0R1 | i << 21 | (-(13 - i) * 8 & 0xffff), p); | |
6159 | p += 4; | |
6160 | } | |
6161 | bfd_put_32 (obfd, STDU_R1_0R1 | (-128 & 0xffff), p); | |
6162 | p += 4; | |
6163 | } | |
6164 | else | |
6165 | { | |
6166 | for (i = 4; i < 12; i++) | |
6167 | { | |
6168 | bfd_put_32 (obfd, | |
6169 | STD_R0_0R1 | i << 21 | (-(12 - i) * 8 & 0xffff), p); | |
6170 | p += 4; | |
6171 | } | |
6172 | bfd_put_32 (obfd, STDU_R1_0R1 | (-96 & 0xffff), p); | |
6173 | p += 4; | |
6174 | } | |
6175 | return p; | |
6176 | } | |
6177 | ||
6178 | /* Emit epilogue of wrapper preserving regs around a call to | |
6179 | __tls_get_addr_opt. */ | |
6180 | ||
6181 | static bfd_byte * | |
6182 | tls_get_addr_epilogue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6183 | { | |
6184 | unsigned int i; | |
6185 | ||
6186 | if (htab->opd_abi) | |
6187 | { | |
6188 | for (i = 4; i < 12; i++) | |
6189 | { | |
6190 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (128 - (13 - i) * 8), p); | |
6191 | p += 4; | |
6192 | } | |
6193 | bfd_put_32 (obfd, ADDI_R1_R1 | 128, p); | |
6194 | p += 4; | |
6195 | } | |
6196 | else | |
6197 | { | |
6198 | for (i = 4; i < 12; i++) | |
6199 | { | |
6200 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (96 - (12 - i) * 8), p); | |
6201 | p += 4; | |
6202 | } | |
6203 | bfd_put_32 (obfd, ADDI_R1_R1 | 96, p); | |
6204 | p += 4; | |
6205 | } | |
6206 | bfd_put_32 (obfd, LD_R0_0R1 | 16, p); | |
6207 | p += 4; | |
6208 | bfd_put_32 (obfd, MTLR_R0, p); | |
6209 | p += 4; | |
6210 | bfd_put_32 (obfd, BLR, p); | |
6211 | p += 4; | |
6212 | return p; | |
6213 | } | |
6214 | ||
e86ce104 AM |
6215 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6216 | information on function code symbol entries to their corresponding | |
6217 | function descriptor symbol entries. */ | |
deb0e272 | 6218 | |
b34976b6 | 6219 | static bfd_boolean |
4ce794b7 | 6220 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6221 | { |
e86ce104 | 6222 | struct bfd_link_info *info; |
65f38f15 | 6223 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6224 | struct ppc_link_hash_entry *fh; |
6225 | struct ppc_link_hash_entry *fdh; | |
6226 | bfd_boolean force_local; | |
5bd4f169 | 6227 | |
ed7007c1 | 6228 | fh = ppc_elf_hash_entry (h); |
50bc7936 | 6229 | if (fh->elf.root.type == bfd_link_hash_indirect) |
b34976b6 | 6230 | return TRUE; |
e86ce104 | 6231 | |
8c5b4e52 AM |
6232 | if (!fh->is_func) |
6233 | return TRUE; | |
6234 | ||
6235 | if (fh->elf.root.root.string[0] != '.' | |
6236 | || fh->elf.root.root.string[1] == '\0') | |
6237 | return TRUE; | |
6238 | ||
4ce794b7 | 6239 | info = inf; |
65f38f15 | 6240 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6241 | if (htab == NULL) |
6242 | return FALSE; | |
5bd4f169 | 6243 | |
8c5b4e52 AM |
6244 | /* Find the corresponding function descriptor symbol. */ |
6245 | fdh = lookup_fdh (fh, htab); | |
6246 | ||
c09bdfe5 AM |
6247 | /* Resolve undefined references to dot-symbols as the value |
6248 | in the function descriptor, if we have one in a regular object. | |
6249 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6250 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6251 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6252 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6253 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6254 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6255 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6256 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6257 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6258 | &fh->elf.root.u.def.section, |
aef36ac1 | 6259 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6260 | { |
b31867b6 | 6261 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6262 | fh->elf.forced_local = 1; |
b31867b6 AM |
6263 | fh->elf.def_regular = fdh->elf.def_regular; |
6264 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6265 | } |
6266 | ||
8c5b4e52 AM |
6267 | if (!fh->elf.dynamic) |
6268 | { | |
6269 | struct plt_entry *ent; | |
5bd4f169 | 6270 | |
8c5b4e52 AM |
6271 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6272 | if (ent->plt.refcount > 0) | |
6273 | break; | |
6274 | if (ent == NULL) | |
6275 | return TRUE; | |
6276 | } | |
5bd4f169 | 6277 | |
8c5b4e52 | 6278 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6279 | if (fdh == NULL |
0e1862bb | 6280 | && !bfd_link_executable (info) |
50bc7936 AM |
6281 | && (fh->elf.root.type == bfd_link_hash_undefined |
6282 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6283 | { | |
908b32fc | 6284 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6285 | if (fdh == NULL) |
6286 | return FALSE; | |
50bc7936 | 6287 | } |
648cca2c | 6288 | |
8c5b4e52 | 6289 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6290 | if (fdh != NULL |
6291 | && fdh->fake | |
8c5b4e52 AM |
6292 | && (fh->elf.root.type == bfd_link_hash_defined |
6293 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6294 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6295 | |
8c5b4e52 AM |
6296 | /* Transfer dynamic linking information to the function descriptor. */ |
6297 | if (fdh != NULL) | |
6298 | { | |
f5385ebf AM |
6299 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6300 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6301 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6302 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6303 | fdh->elf.dynamic |= fh->elf.dynamic; |
6304 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6305 | || fh->elf.type == STT_FUNC | |
6306 | || fh->elf.type == STT_GNU_IFUNC); | |
6307 | move_plt_plist (fh, fdh); | |
6308 | ||
6309 | if (!fdh->elf.forced_local | |
6310 | && fh->elf.dynindx != -1) | |
6311 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6312 | return FALSE; | |
e86ce104 AM |
6313 | } |
6314 | ||
50bc7936 AM |
6315 | /* Now that the info is on the function descriptor, clear the |
6316 | function code sym info. Any function code syms for which we | |
6317 | don't have a definition in a regular file, we force local. | |
6318 | This prevents a shared library from exporting syms that have | |
6319 | been imported from another library. Function code syms that | |
6320 | are really in the library we must leave global to prevent the | |
6321 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6322 | force_local = (!fh->elf.def_regular |
6323 | || fdh == NULL | |
6324 | || !fdh->elf.def_regular | |
6325 | || fdh->elf.forced_local); | |
50bc7936 AM |
6326 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6327 | ||
b34976b6 | 6328 | return TRUE; |
e86ce104 | 6329 | } |
40b8271b | 6330 | |
a4b6fadd AM |
6331 | static const struct sfpr_def_parms save_res_funcs[] = |
6332 | { | |
6333 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6334 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6335 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6336 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6337 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6338 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6339 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6340 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6341 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6342 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6343 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6344 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6345 | }; | |
6346 | ||
e86ce104 | 6347 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
c9405344 AM |
6348 | this hook to a) run the edit functions in this file, b) provide |
6349 | some gcc support functions, and c) transfer dynamic linking | |
6350 | information gathered so far on function code symbol entries, to | |
6351 | their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6352 | |
b34976b6 | 6353 | static bfd_boolean |
c9405344 | 6354 | ppc64_elf_edit (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
e86ce104 AM |
6355 | { |
6356 | struct ppc_link_hash_table *htab; | |
6357 | ||
6358 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6359 | if (htab == NULL) |
6360 | return FALSE; | |
6361 | ||
c9405344 AM |
6362 | /* Call back into the linker, which then runs the edit functions. */ |
6363 | htab->params->edit (); | |
6364 | ||
b32547cd AM |
6365 | /* Provide any missing _save* and _rest* functions. */ |
6366 | if (htab->sfpr != NULL) | |
6367 | { | |
6368 | unsigned int i; | |
6369 | ||
6370 | htab->sfpr->size = 0; | |
6371 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6372 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6373 | return FALSE; | |
6374 | if (htab->sfpr->size == 0) | |
6375 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6376 | } | |
6377 | ||
6378 | if (bfd_link_relocatable (info)) | |
6379 | return TRUE; | |
6380 | ||
6381 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6382 | { |
6383 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6384 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6385 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6386 | if (!htab->elf.hgot->def_regular |
6387 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6388 | { | |
6389 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6390 | htab->elf.hgot->root.u.def.value = 0; | |
6391 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6392 | htab->elf.hgot->def_regular = 1; | |
6393 | htab->elf.hgot->root.linker_def = 1; | |
6394 | } | |
dba6fa9b | 6395 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6396 | htab->elf.hgot->other |
6397 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6398 | } |
c66bb0ee | 6399 | |
8c5b4e52 AM |
6400 | if (htab->need_func_desc_adj) |
6401 | { | |
6402 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6403 | htab->need_func_desc_adj = 0; | |
6404 | } | |
805fc799 | 6405 | |
b34976b6 | 6406 | return TRUE; |
e86ce104 AM |
6407 | } |
6408 | ||
d311bc8b | 6409 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6410 | aliases, that apply to read-only sections. Cannot be used after |
6411 | size_dynamic_sections. */ | |
d311bc8b AM |
6412 | |
6413 | static bfd_boolean | |
6414 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6415 | { | |
ed7007c1 | 6416 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
d311bc8b AM |
6417 | do |
6418 | { | |
5dbc8b37 | 6419 | if (_bfd_elf_readonly_dynrelocs (&eh->elf)) |
d311bc8b | 6420 | return TRUE; |
ed7007c1 | 6421 | eh = ppc_elf_hash_entry (eh->elf.u.alias); |
2cdcc330 AM |
6422 | } |
6423 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6424 | |
6425 | return FALSE; | |
6426 | } | |
8a2058b5 | 6427 | |
8a9e8e72 AM |
6428 | /* Return whether EH has pc-relative dynamic relocs. */ |
6429 | ||
6430 | static bfd_boolean | |
6431 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6432 | { | |
6433 | struct elf_dyn_relocs *p; | |
6434 | ||
190eb1dd | 6435 | for (p = eh->elf.dyn_relocs; p != NULL; p = p->next) |
8a9e8e72 AM |
6436 | if (p->pc_count != 0) |
6437 | return TRUE; | |
6438 | return FALSE; | |
6439 | } | |
6440 | ||
8a2058b5 AM |
6441 | /* Return true if a global entry stub will be created for H. Valid |
6442 | for ELFv2 before plt entries have been allocated. */ | |
6443 | ||
6444 | static bfd_boolean | |
6445 | global_entry_stub (struct elf_link_hash_entry *h) | |
6446 | { | |
6447 | struct plt_entry *pent; | |
6448 | ||
6449 | if (!h->pointer_equality_needed | |
6450 | || h->def_regular) | |
6451 | return FALSE; | |
6452 | ||
6453 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6454 | if (pent->plt.refcount > 0 | |
6455 | && pent->addend == 0) | |
6456 | return TRUE; | |
6457 | ||
6458 | return FALSE; | |
6459 | } | |
6460 | ||
e86ce104 AM |
6461 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6462 | regular object. The current definition is in some section of the | |
6463 | dynamic object, but we're not including those sections. We have to | |
6464 | change the definition to something the rest of the link can | |
6465 | understand. */ | |
6466 | ||
b34976b6 | 6467 | static bfd_boolean |
4ce794b7 AM |
6468 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6469 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6470 | { |
6471 | struct ppc_link_hash_table *htab; | |
5474d94f | 6472 | asection *s, *srel; |
e86ce104 AM |
6473 | |
6474 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6475 | if (htab == NULL) |
6476 | return FALSE; | |
e86ce104 AM |
6477 | |
6478 | /* Deal with function syms. */ | |
6479 | if (h->type == STT_FUNC | |
e054468f | 6480 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6481 | || h->needs_plt) |
e86ce104 | 6482 | { |
ed7007c1 | 6483 | bfd_boolean local = (ppc_elf_hash_entry (h)->save_res |
529fe20e AM |
6484 | || SYMBOL_CALLS_LOCAL (info, h) |
6485 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6486 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6487 | function symbol is local and not an ifunc. We keep dynamic | |
6488 | relocs for ifuncs when local rather than always emitting a | |
6489 | plt call stub for them and defining the symbol on the call | |
6490 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6491 | is defined on a descriptor, not code) and it can be faster at | |
6492 | run-time due to not needing to bounce through a stub. The | |
6493 | dyn_relocs for ifuncs will be applied even in a static | |
6494 | executable. */ | |
6495 | if (!bfd_link_pic (info) | |
6496 | && h->type != STT_GNU_IFUNC | |
6497 | && local) | |
190eb1dd | 6498 | h->dyn_relocs = NULL; |
529fe20e | 6499 | |
e86ce104 AM |
6500 | /* Clear procedure linkage table information for any symbol that |
6501 | won't need a .plt entry. */ | |
411e1bfb AM |
6502 | struct plt_entry *ent; |
6503 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6504 | if (ent->plt.refcount > 0) | |
6505 | break; | |
8387904d | 6506 | if (ent == NULL |
2d7ad24e AM |
6507 | || (h->type != STT_GNU_IFUNC |
6508 | && local | |
3e04d765 | 6509 | && (htab->can_convert_all_inline_plt |
ed7007c1 | 6510 | || (ppc_elf_hash_entry (h)->tls_mask |
3e04d765 | 6511 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) |
40b8271b | 6512 | { |
411e1bfb | 6513 | h->plt.plist = NULL; |
f5385ebf | 6514 | h->needs_plt = 0; |
d1eca1e4 | 6515 | h->pointer_equality_needed = 0; |
40b8271b | 6516 | } |
8a2058b5 | 6517 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6518 | { |
d1eca1e4 AM |
6519 | /* Taking a function's address in a read/write section |
6520 | doesn't require us to define the function symbol in the | |
6521 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6522 | be used instead. The reason we prefer a few more dynamic |
6523 | relocs is that calling via a global entry stub costs a | |
6524 | few more instructions, and pointer_equality_needed causes | |
6525 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6526 | if (global_entry_stub (h)) |
d1eca1e4 | 6527 | { |
5dbc8b37 | 6528 | if (!_bfd_elf_readonly_dynrelocs (h)) |
529fe20e AM |
6529 | { |
6530 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6531 | /* If we haven't seen a branch reloc and the symbol |
6532 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6533 | if (!h->needs_plt) |
6534 | h->plt.plist = NULL; | |
6535 | } | |
6536 | else if (!bfd_link_pic (info)) | |
6537 | /* We are going to be defining the function symbol on the | |
6538 | plt stub, so no dyn_relocs needed when non-pic. */ | |
190eb1dd | 6539 | h->dyn_relocs = NULL; |
d1eca1e4 AM |
6540 | } |
6541 | ||
3988aed5 AM |
6542 | /* ELFv2 function symbols can't have copy relocs. */ |
6543 | return TRUE; | |
6544 | } | |
6545 | else if (!h->needs_plt | |
5dbc8b37 | 6546 | && !_bfd_elf_readonly_dynrelocs (h)) |
3988aed5 | 6547 | { |
04383fd1 AM |
6548 | /* If we haven't seen a branch reloc and the symbol isn't an |
6549 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6550 | h->plt.plist = NULL; |
6551 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6552 | return TRUE; |
6553 | } | |
5bd4f169 | 6554 | } |
bbd7ec4a | 6555 | else |
411e1bfb | 6556 | h->plt.plist = NULL; |
5bd4f169 AM |
6557 | |
6558 | /* If this is a weak symbol, and there is a real definition, the | |
6559 | processor independent code will have arranged for us to see the | |
6560 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6561 | if (h->is_weakalias) |
5bd4f169 | 6562 | { |
60d67dc8 AM |
6563 | struct elf_link_hash_entry *def = weakdef (h); |
6564 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6565 | h->root.u.def.section = def->root.u.def.section; | |
6566 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6567 | if (def->root.u.def.section == htab->elf.sdynbss |
6568 | || def->root.u.def.section == htab->elf.sdynrelro) | |
190eb1dd | 6569 | h->dyn_relocs = NULL; |
b34976b6 | 6570 | return TRUE; |
5bd4f169 AM |
6571 | } |
6572 | ||
5bd4f169 AM |
6573 | /* If we are creating a shared library, we must presume that the |
6574 | only references to the symbol are via the global offset table. | |
6575 | For such cases we need not do anything here; the relocations will | |
6576 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6577 | if (!bfd_link_executable (info)) |
b34976b6 | 6578 | return TRUE; |
5bd4f169 | 6579 | |
65f38f15 AM |
6580 | /* If there are no references to this symbol that do not use the |
6581 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6582 | if (!h->non_got_ref) |
b34976b6 | 6583 | return TRUE; |
65f38f15 | 6584 | |
b186458a | 6585 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6586 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6587 | |
d93d1c80 AM |
6588 | /* If -z nocopyreloc was given, don't generate them either. */ |
6589 | || info->nocopyreloc | |
a127494f | 6590 | |
dce2246a | 6591 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6592 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6593 | || (ELIMINATE_COPY_RELOCS |
6594 | && !h->needs_copy | |
6595 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6596 | |
d93d1c80 AM |
6597 | /* Protected variables do not work with .dynbss. The copy in |
6598 | .dynbss won't be used by the shared library with the protected | |
6599 | definition for the variable. Text relocations are preferable | |
6600 | to an incorrect program. */ | |
6601 | || h->protected_def) | |
529fe20e | 6602 | return TRUE; |
a127494f | 6603 | |
e1c6cf61 AM |
6604 | if (h->type == STT_FUNC |
6605 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6606 | { |
e1c6cf61 AM |
6607 | /* .dynbss copies of function symbols only work if we have |
6608 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6609 | use dot-symbols and set the function symbol size to the text | |
6610 | size of the function rather than the size of the descriptor. | |
6611 | That's wrong for copying a descriptor. */ | |
ed7007c1 | 6612 | if (ppc_elf_hash_entry (h)->oh == NULL |
e1c6cf61 AM |
6613 | || !(h->size == 24 || h->size == 16)) |
6614 | return TRUE; | |
6615 | ||
6616 | /* We should never get here, but unfortunately there are old | |
6617 | versions of gcc (circa gcc-3.2) that improperly for the | |
6618 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6619 | suchlike in read-only sections. Allow them to proceed, but | |
6620 | warn that this might break at runtime. */ | |
25f53a85 | 6621 | info->callbacks->einfo |
c1c8c1ef | 6622 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6623 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6624 | h->root.root.string); |
6625 | } | |
5d35169e AM |
6626 | |
6627 | /* This is a reference to a symbol defined by a dynamic object which | |
6628 | is not a function. */ | |
6629 | ||
5bd4f169 AM |
6630 | /* We must allocate the symbol in our .dynbss section, which will |
6631 | become part of the .bss section of the executable. There will be | |
6632 | an entry for this symbol in the .dynsym section. The dynamic | |
6633 | object will contain position independent code, so all references | |
6634 | from the dynamic object to this symbol will go through the global | |
6635 | offset table. The dynamic linker will use the .dynsym entry to | |
6636 | determine the address it must put in the global offset table, so | |
6637 | both the dynamic object and the regular object will refer to the | |
6638 | same memory location for the variable. */ | |
5474d94f AM |
6639 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6640 | { | |
6641 | s = htab->elf.sdynrelro; | |
6642 | srel = htab->elf.sreldynrelro; | |
6643 | } | |
6644 | else | |
6645 | { | |
6646 | s = htab->elf.sdynbss; | |
6647 | srel = htab->elf.srelbss; | |
6648 | } | |
1d7e9d18 | 6649 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6650 | { |
4a7e5234 AM |
6651 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6652 | linker to copy the initial value out of the dynamic object | |
6653 | and into the runtime process image. */ | |
5474d94f | 6654 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6655 | h->needs_copy = 1; |
5bd4f169 AM |
6656 | } |
6657 | ||
529fe20e | 6658 | /* We no longer want dyn_relocs. */ |
190eb1dd | 6659 | h->dyn_relocs = NULL; |
6cabe1ea | 6660 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6661 | } |
6662 | ||
e86ce104 AM |
6663 | /* If given a function descriptor symbol, hide both the function code |
6664 | sym and the descriptor. */ | |
6665 | static void | |
4ce794b7 AM |
6666 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6667 | struct elf_link_hash_entry *h, | |
6668 | bfd_boolean force_local) | |
e86ce104 | 6669 | { |
34814b9f | 6670 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6671 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6672 | ||
87469ba2 AM |
6673 | if (ppc_hash_table (info) == NULL) |
6674 | return; | |
6675 | ||
ed7007c1 | 6676 | eh = ppc_elf_hash_entry (h); |
34814b9f | 6677 | if (eh->is_func_descriptor) |
e86ce104 | 6678 | { |
34814b9f | 6679 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6680 | |
721956f4 | 6681 | if (fh == NULL) |
d1329ca3 AM |
6682 | { |
6683 | const char *p, *q; | |
b8ac2841 | 6684 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6685 | char save; |
6686 | ||
6687 | /* We aren't supposed to use alloca in BFD because on | |
6688 | systems which do not have alloca the version in libiberty | |
6689 | calls xmalloc, which might cause the program to crash | |
6690 | when it runs out of memory. This function doesn't have a | |
6691 | return status, so there's no way to gracefully return an | |
6692 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6693 | accessed; It's either a string in an ELF string table, |
6694 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6695 | |
34814b9f | 6696 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6697 | save = *p; |
6698 | *(char *) p = '.'; | |
ed7007c1 AM |
6699 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6700 | FALSE, FALSE)); | |
d1329ca3 AM |
6701 | *(char *) p = save; |
6702 | ||
6703 | /* Unfortunately, if it so happens that the string we were | |
6704 | looking for was allocated immediately before this string, | |
6705 | then we overwrote the string terminator. That's the only | |
6706 | reason the lookup should fail. */ | |
6707 | if (fh == NULL) | |
6708 | { | |
34814b9f AM |
6709 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6710 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6711 | --q, --p; |
34814b9f | 6712 | if (q < eh->elf.root.root.string && *p == '.') |
ed7007c1 AM |
6713 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6714 | FALSE, FALSE)); | |
d1329ca3 AM |
6715 | } |
6716 | if (fh != NULL) | |
6717 | { | |
34814b9f AM |
6718 | eh->oh = fh; |
6719 | fh->oh = eh; | |
d1329ca3 AM |
6720 | } |
6721 | } | |
e86ce104 | 6722 | if (fh != NULL) |
34814b9f | 6723 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6724 | } |
6725 | } | |
6726 | ||
411e1bfb | 6727 | static bfd_boolean |
8843416a AM |
6728 | get_sym_h (struct elf_link_hash_entry **hp, |
6729 | Elf_Internal_Sym **symp, | |
6730 | asection **symsecp, | |
f961d9dd | 6731 | unsigned char **tls_maskp, |
8843416a AM |
6732 | Elf_Internal_Sym **locsymsp, |
6733 | unsigned long r_symndx, | |
6734 | bfd *ibfd) | |
411e1bfb | 6735 | { |
0ffa91dd | 6736 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6737 | |
6738 | if (r_symndx >= symtab_hdr->sh_info) | |
6739 | { | |
6740 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6741 | struct elf_link_hash_entry *h; | |
6742 | ||
6743 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6744 | h = elf_follow_link (h); |
411e1bfb AM |
6745 | |
6746 | if (hp != NULL) | |
6747 | *hp = h; | |
6748 | ||
6749 | if (symp != NULL) | |
6750 | *symp = NULL; | |
6751 | ||
6752 | if (symsecp != NULL) | |
6753 | { | |
6754 | asection *symsec = NULL; | |
6755 | if (h->root.type == bfd_link_hash_defined | |
6756 | || h->root.type == bfd_link_hash_defweak) | |
6757 | symsec = h->root.u.def.section; | |
6758 | *symsecp = symsec; | |
6759 | } | |
6760 | ||
e7b938ca | 6761 | if (tls_maskp != NULL) |
ed7007c1 | 6762 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; |
411e1bfb AM |
6763 | } |
6764 | else | |
6765 | { | |
6766 | Elf_Internal_Sym *sym; | |
6767 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6768 | ||
6769 | if (locsyms == NULL) | |
6770 | { | |
6771 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6772 | if (locsyms == NULL) | |
6773 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6774 | symtab_hdr->sh_info, | |
6775 | 0, NULL, NULL, NULL); | |
6776 | if (locsyms == NULL) | |
6777 | return FALSE; | |
6778 | *locsymsp = locsyms; | |
6779 | } | |
6780 | sym = locsyms + r_symndx; | |
6781 | ||
6782 | if (hp != NULL) | |
6783 | *hp = NULL; | |
6784 | ||
6785 | if (symp != NULL) | |
6786 | *symp = sym; | |
6787 | ||
6788 | if (symsecp != NULL) | |
cb33740c | 6789 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6790 | |
e7b938ca | 6791 | if (tls_maskp != NULL) |
411e1bfb AM |
6792 | { |
6793 | struct got_entry **lgot_ents; | |
f961d9dd | 6794 | unsigned char *tls_mask; |
411e1bfb | 6795 | |
e7b938ca | 6796 | tls_mask = NULL; |
411e1bfb AM |
6797 | lgot_ents = elf_local_got_ents (ibfd); |
6798 | if (lgot_ents != NULL) | |
6799 | { | |
e054468f AM |
6800 | struct plt_entry **local_plt = (struct plt_entry **) |
6801 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6802 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6803 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6804 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6805 | } |
e7b938ca | 6806 | *tls_maskp = tls_mask; |
411e1bfb AM |
6807 | } |
6808 | } | |
6809 | return TRUE; | |
6810 | } | |
6811 | ||
e7b938ca | 6812 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6813 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6814 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6815 | |
6816 | static int | |
f961d9dd | 6817 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6818 | unsigned long *toc_symndx, |
6819 | bfd_vma *toc_addend, | |
0d4792f7 | 6820 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6821 | const Elf_Internal_Rela *rel, |
6822 | bfd *ibfd) | |
411e1bfb AM |
6823 | { |
6824 | unsigned long r_symndx; | |
0d4792f7 | 6825 | int next_r; |
411e1bfb AM |
6826 | struct elf_link_hash_entry *h; |
6827 | Elf_Internal_Sym *sym; | |
6828 | asection *sec; | |
6829 | bfd_vma off; | |
6830 | ||
6831 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6832 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6833 | return 0; |
411e1bfb | 6834 | |
37da22e5 AM |
6835 | if ((*tls_maskp != NULL |
6836 | && (**tls_maskp & TLS_TLS) != 0 | |
6837 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6838 | || sec == NULL |
6bee8834 | 6839 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6840 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6841 | return 1; |
411e1bfb AM |
6842 | |
6843 | /* Look inside a TOC section too. */ | |
6844 | if (h != NULL) | |
6845 | { | |
6846 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6847 | off = h->root.u.def.value; | |
6848 | } | |
6849 | else | |
6850 | off = sym->st_value; | |
6851 | off += rel->r_addend; | |
6852 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6853 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6854 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6855 | if (toc_symndx != NULL) |
6856 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6857 | if (toc_addend != NULL) |
6858 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6859 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6860 | return 0; | |
854b41e7 | 6861 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6862 | && (next_r == -1 || next_r == -2)) |
6863 | return 1 - next_r; | |
951fd09b | 6864 | return 1; |
411e1bfb AM |
6865 | } |
6866 | ||
3b421ab3 AM |
6867 | /* Find (or create) an entry in the tocsave hash table. */ |
6868 | ||
6869 | static struct tocsave_entry * | |
6870 | tocsave_find (struct ppc_link_hash_table *htab, | |
6871 | enum insert_option insert, | |
6872 | Elf_Internal_Sym **local_syms, | |
6873 | const Elf_Internal_Rela *irela, | |
6874 | bfd *ibfd) | |
6875 | { | |
6876 | unsigned long r_indx; | |
6877 | struct elf_link_hash_entry *h; | |
6878 | Elf_Internal_Sym *sym; | |
6879 | struct tocsave_entry ent, *p; | |
6880 | hashval_t hash; | |
6881 | struct tocsave_entry **slot; | |
6882 | ||
6883 | r_indx = ELF64_R_SYM (irela->r_info); | |
6884 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6885 | return NULL; | |
6886 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6887 | { | |
4eca0228 | 6888 | _bfd_error_handler |
871b3ab2 | 6889 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6890 | return NULL; |
6891 | } | |
6892 | ||
6893 | if (h != NULL) | |
6894 | ent.offset = h->root.u.def.value; | |
6895 | else | |
6896 | ent.offset = sym->st_value; | |
6897 | ent.offset += irela->r_addend; | |
6898 | ||
6899 | hash = tocsave_htab_hash (&ent); | |
6900 | slot = ((struct tocsave_entry **) | |
6901 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6902 | if (slot == NULL) | |
6903 | return NULL; | |
6904 | ||
6905 | if (*slot == NULL) | |
6906 | { | |
6907 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6908 | if (p == NULL) | |
6909 | return NULL; | |
6910 | *p = ent; | |
6911 | *slot = p; | |
6912 | } | |
6913 | return *slot; | |
6914 | } | |
6915 | ||
754021d0 | 6916 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6917 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6918 | |
6919 | static bfd_boolean | |
6920 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6921 | { | |
6922 | struct ppc_link_hash_entry *eh; | |
6923 | asection *sym_sec; | |
74f0fb50 | 6924 | struct _opd_sec_data *opd; |
754021d0 AM |
6925 | |
6926 | if (h->root.type == bfd_link_hash_indirect) | |
6927 | return TRUE; | |
6928 | ||
754021d0 AM |
6929 | if (h->root.type != bfd_link_hash_defined |
6930 | && h->root.type != bfd_link_hash_defweak) | |
6931 | return TRUE; | |
6932 | ||
ed7007c1 | 6933 | eh = ppc_elf_hash_entry (h); |
754021d0 AM |
6934 | if (eh->adjust_done) |
6935 | return TRUE; | |
6936 | ||
6937 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6938 | opd = get_opd_info (sym_sec); |
6939 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6940 | { |
51aecdc5 | 6941 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6942 | if (adjust == -1) |
6943 | { | |
6944 | /* This entry has been deleted. */ | |
b3fac117 | 6945 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6946 | if (dsec == NULL) |
6947 | { | |
6948 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6949 | if (discarded_section (dsec)) |
81688140 | 6950 | { |
b3fac117 | 6951 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6952 | break; |
6953 | } | |
6954 | } | |
4025353c | 6955 | eh->elf.root.u.def.value = 0; |
81688140 | 6956 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6957 | } |
6958 | else | |
6959 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6960 | eh->adjust_done = 1; |
6961 | } | |
6962 | return TRUE; | |
6963 | } | |
6964 | ||
8c1d1bb8 | 6965 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6966 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6967 | have already been determined. */ |
6968 | ||
6969 | static bfd_boolean | |
6970 | dec_dynrel_count (bfd_vma r_info, | |
6971 | asection *sec, | |
6972 | struct bfd_link_info *info, | |
6973 | Elf_Internal_Sym **local_syms, | |
6974 | struct elf_link_hash_entry *h, | |
19e08130 | 6975 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6976 | { |
6977 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6978 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6979 | |
6980 | /* Can this reloc be dynamic? This switch, and later tests here | |
6981 | should be kept in sync with the code in check_relocs. */ | |
6982 | r_type = ELF64_R_TYPE (r_info); | |
6983 | switch (r_type) | |
6984 | { | |
6985 | default: | |
6986 | return TRUE; | |
6987 | ||
1bdd8fac AM |
6988 | case R_PPC64_TOC16: |
6989 | case R_PPC64_TOC16_DS: | |
6990 | case R_PPC64_TOC16_LO: | |
6991 | case R_PPC64_TOC16_HI: | |
6992 | case R_PPC64_TOC16_HA: | |
6993 | case R_PPC64_TOC16_LO_DS: | |
6994 | if (h == NULL) | |
6995 | return TRUE; | |
6996 | break; | |
6997 | ||
8c1d1bb8 AM |
6998 | case R_PPC64_TPREL16: |
6999 | case R_PPC64_TPREL16_LO: | |
7000 | case R_PPC64_TPREL16_HI: | |
7001 | case R_PPC64_TPREL16_HA: | |
7002 | case R_PPC64_TPREL16_DS: | |
7003 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7004 | case R_PPC64_TPREL16_HIGH: |
7005 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7006 | case R_PPC64_TPREL16_HIGHER: |
7007 | case R_PPC64_TPREL16_HIGHERA: | |
7008 | case R_PPC64_TPREL16_HIGHEST: | |
7009 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 7010 | case R_PPC64_TPREL64: |
c213164a | 7011 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
7012 | case R_PPC64_DTPMOD64: |
7013 | case R_PPC64_DTPREL64: | |
7014 | case R_PPC64_ADDR64: | |
7015 | case R_PPC64_REL30: | |
7016 | case R_PPC64_REL32: | |
7017 | case R_PPC64_REL64: | |
7018 | case R_PPC64_ADDR14: | |
7019 | case R_PPC64_ADDR14_BRNTAKEN: | |
7020 | case R_PPC64_ADDR14_BRTAKEN: | |
7021 | case R_PPC64_ADDR16: | |
7022 | case R_PPC64_ADDR16_DS: | |
7023 | case R_PPC64_ADDR16_HA: | |
7024 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7025 | case R_PPC64_ADDR16_HIGH: |
7026 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7027 | case R_PPC64_ADDR16_HIGHER: |
7028 | case R_PPC64_ADDR16_HIGHERA: | |
7029 | case R_PPC64_ADDR16_HIGHEST: | |
7030 | case R_PPC64_ADDR16_HIGHESTA: | |
7031 | case R_PPC64_ADDR16_LO: | |
7032 | case R_PPC64_ADDR16_LO_DS: | |
7033 | case R_PPC64_ADDR24: | |
7034 | case R_PPC64_ADDR32: | |
7035 | case R_PPC64_UADDR16: | |
7036 | case R_PPC64_UADDR32: | |
7037 | case R_PPC64_UADDR64: | |
7038 | case R_PPC64_TOC: | |
5663e321 AM |
7039 | case R_PPC64_D34: |
7040 | case R_PPC64_D34_LO: | |
7041 | case R_PPC64_D34_HI30: | |
7042 | case R_PPC64_D34_HA30: | |
7043 | case R_PPC64_ADDR16_HIGHER34: | |
7044 | case R_PPC64_ADDR16_HIGHERA34: | |
7045 | case R_PPC64_ADDR16_HIGHEST34: | |
7046 | case R_PPC64_ADDR16_HIGHESTA34: | |
7047 | case R_PPC64_D28: | |
8c1d1bb8 AM |
7048 | break; |
7049 | } | |
7050 | ||
7051 | if (local_syms != NULL) | |
7052 | { | |
7053 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7054 | bfd *ibfd = sec->owner; |
7055 | ||
7056 | r_symndx = ELF64_R_SYM (r_info); | |
7057 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7058 | return FALSE; | |
7059 | } | |
7060 | ||
ec73ddcd AM |
7061 | if ((h != NULL |
7062 | && (h->root.type == bfd_link_hash_defweak | |
7063 | || !h->def_regular)) | |
7064 | || (h != NULL | |
7065 | && !bfd_link_executable (info) | |
7066 | && !SYMBOLIC_BIND (info, h)) | |
7067 | || (bfd_link_pic (info) | |
7068 | && must_be_dyn_reloc (info, r_type)) | |
7069 | || (!bfd_link_pic (info) | |
7070 | && (h != NULL | |
7071 | ? h->type == STT_GNU_IFUNC | |
7072 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
7073 | ; |
7074 | else | |
7075 | return TRUE; | |
7076 | ||
7077 | if (h != NULL) | |
6edfbbad | 7078 | { |
19e08130 AM |
7079 | struct elf_dyn_relocs *p; |
7080 | struct elf_dyn_relocs **pp; | |
190eb1dd | 7081 | pp = &h->dyn_relocs; |
19e08130 AM |
7082 | |
7083 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7084 | with local syms for a given section. Also, symbol flags are | |
7085 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7086 | report a dynreloc miscount. */ | |
7087 | if (*pp == NULL && info->gc_sections) | |
7088 | return TRUE; | |
7089 | ||
7090 | while ((p = *pp) != NULL) | |
60124e18 | 7091 | { |
19e08130 AM |
7092 | if (p->sec == sec) |
7093 | { | |
7094 | if (!must_be_dyn_reloc (info, r_type)) | |
7095 | p->pc_count -= 1; | |
7096 | p->count -= 1; | |
7097 | if (p->count == 0) | |
7098 | *pp = p->next; | |
7099 | return TRUE; | |
7100 | } | |
7101 | pp = &p->next; | |
60124e18 | 7102 | } |
6edfbbad | 7103 | } |
19e08130 AM |
7104 | else |
7105 | { | |
7106 | struct ppc_dyn_relocs *p; | |
7107 | struct ppc_dyn_relocs **pp; | |
7108 | void *vpp; | |
7109 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7110 | |
19e08130 AM |
7111 | if (local_syms == NULL) |
7112 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7113 | if (sym_sec == NULL) | |
7114 | sym_sec = sec; | |
c57da1a7 | 7115 | |
19e08130 AM |
7116 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7117 | pp = (struct ppc_dyn_relocs **) vpp; | |
7118 | ||
7119 | if (*pp == NULL && info->gc_sections) | |
7120 | return TRUE; | |
7121 | ||
7122 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7123 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7124 | { |
19e08130 AM |
7125 | if (p->sec == sec && p->ifunc == is_ifunc) |
7126 | { | |
7127 | p->count -= 1; | |
7128 | if (p->count == 0) | |
7129 | *pp = p->next; | |
7130 | return TRUE; | |
7131 | } | |
7132 | pp = &p->next; | |
8c1d1bb8 | 7133 | } |
8c1d1bb8 AM |
7134 | } |
7135 | ||
695344c0 | 7136 | /* xgettext:c-format */ |
cf97bcb0 AM |
7137 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7138 | sec->owner, sec); | |
8c1d1bb8 AM |
7139 | bfd_set_error (bfd_error_bad_value); |
7140 | return FALSE; | |
7141 | } | |
7142 | ||
754021d0 AM |
7143 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7144 | only remove those associated with functions in discarded link-once | |
7145 | sections, or weakly defined functions that have been overridden. It | |
7146 | would be possible to remove many more entries for statically linked | |
7147 | applications. */ | |
7148 | ||
b34976b6 | 7149 | bfd_boolean |
e7d1c40c | 7150 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7151 | { |
7152 | bfd *ibfd; | |
754021d0 | 7153 | bfd_boolean some_edited = FALSE; |
3f764659 | 7154 | asection *need_pad = NULL; |
e7d1c40c AM |
7155 | struct ppc_link_hash_table *htab; |
7156 | ||
7157 | htab = ppc_hash_table (info); | |
7158 | if (htab == NULL) | |
7159 | return FALSE; | |
1e2f5b6e | 7160 | |
c72f2fb2 | 7161 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7162 | { |
7163 | asection *sec; | |
7164 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7165 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7166 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7167 | struct _opd_sec_data *opd; |
51aecdc5 | 7168 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7169 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7170 | |
854b41e7 AM |
7171 | if (!is_ppc64_elf (ibfd)) |
7172 | continue; | |
7173 | ||
1e2f5b6e | 7174 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7175 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7176 | continue; |
7177 | ||
dbaa2011 | 7178 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7179 | continue; |
7180 | ||
1e2f5b6e AM |
7181 | if (sec->output_section == bfd_abs_section_ptr) |
7182 | continue; | |
7183 | ||
7184 | /* Look through the section relocs. */ | |
7185 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7186 | continue; | |
7187 | ||
6cdc0ccc | 7188 | local_syms = NULL; |
0ffa91dd | 7189 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7190 | |
7191 | /* Read the relocations. */ | |
4ce794b7 | 7192 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7193 | info->keep_memory); |
1e2f5b6e | 7194 | if (relstart == NULL) |
b34976b6 | 7195 | return FALSE; |
1e2f5b6e AM |
7196 | |
7197 | /* First run through the relocs to check they are sane, and to | |
7198 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7199 | need_edit = FALSE; |
51aecdc5 | 7200 | broken = FALSE; |
3f764659 | 7201 | need_pad = sec; |
1e2f5b6e | 7202 | relend = relstart + sec->reloc_count; |
50bc7936 | 7203 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7204 | { |
04c9666a | 7205 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7206 | unsigned long r_symndx; |
7207 | asection *sym_sec; | |
7208 | struct elf_link_hash_entry *h; | |
7209 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7210 | bfd_vma offset; |
1e2f5b6e | 7211 | |
51aecdc5 | 7212 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7213 | only interested in the reloc pointing to a function entry |
7214 | point. */ | |
51aecdc5 AM |
7215 | offset = rel->r_offset; |
7216 | if (rel + 1 == relend | |
7217 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7218 | { |
7219 | /* If someone messes with .opd alignment then after a | |
7220 | "ld -r" we might have padding in the middle of .opd. | |
7221 | Also, there's nothing to prevent someone putting | |
7222 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7223 | optimization for them! */ |
3f764659 | 7224 | broken_opd: |
4eca0228 | 7225 | _bfd_error_handler |
871b3ab2 | 7226 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7227 | broken = TRUE; |
1e2f5b6e AM |
7228 | break; |
7229 | } | |
7230 | ||
50bc7936 AM |
7231 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7232 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7233 | { | |
4eca0228 | 7234 | _bfd_error_handler |
695344c0 | 7235 | /* xgettext:c-format */ |
871b3ab2 | 7236 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7237 | ibfd, r_type); |
51aecdc5 | 7238 | broken = TRUE; |
50bc7936 AM |
7239 | break; |
7240 | } | |
7241 | ||
1e2f5b6e | 7242 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7243 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7244 | r_symndx, ibfd)) | |
50bc7936 | 7245 | goto error_ret; |
1e2f5b6e AM |
7246 | |
7247 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7248 | { | |
411e1bfb AM |
7249 | const char *sym_name; |
7250 | if (h != NULL) | |
7251 | sym_name = h->root.root.string; | |
7252 | else | |
26c61ae5 L |
7253 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7254 | sym_sec); | |
411e1bfb | 7255 | |
4eca0228 | 7256 | _bfd_error_handler |
695344c0 | 7257 | /* xgettext:c-format */ |
871b3ab2 | 7258 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7259 | ibfd, sym_name); |
51aecdc5 | 7260 | broken = TRUE; |
1e2f5b6e AM |
7261 | break; |
7262 | } | |
7263 | ||
51020317 AM |
7264 | /* opd entries are always for functions defined in the |
7265 | current input bfd. If the symbol isn't defined in the | |
7266 | input bfd, then we won't be using the function in this | |
7267 | bfd; It must be defined in a linkonce section in another | |
7268 | bfd, or is weak. It's also possible that we are | |
7269 | discarding the function due to a linker script /DISCARD/, | |
7270 | which we test for via the output_section. */ | |
7271 | if (sym_sec->owner != ibfd | |
7272 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7273 | need_edit = TRUE; |
1e2f5b6e | 7274 | |
50bc7936 | 7275 | rel += 2; |
51aecdc5 AM |
7276 | if (rel + 1 == relend |
7277 | || (rel + 2 < relend | |
7278 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7279 | ++rel; | |
7280 | ||
7281 | if (rel == relend) | |
3f764659 JJ |
7282 | { |
7283 | if (sec->size == offset + 24) | |
7284 | { | |
7285 | need_pad = NULL; | |
7286 | break; | |
7287 | } | |
51aecdc5 | 7288 | if (sec->size == offset + 16) |
3f764659 JJ |
7289 | { |
7290 | cnt_16b++; | |
7291 | break; | |
7292 | } | |
7293 | goto broken_opd; | |
7294 | } | |
3f764659 JJ |
7295 | else if (rel + 1 < relend |
7296 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7297 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7298 | { | |
51aecdc5 AM |
7299 | if (rel[0].r_offset == offset + 16) |
7300 | cnt_16b++; | |
7301 | else if (rel[0].r_offset != offset + 24) | |
7302 | goto broken_opd; | |
3f764659 JJ |
7303 | } |
7304 | else | |
7305 | goto broken_opd; | |
1e2f5b6e AM |
7306 | } |
7307 | ||
e7d1c40c | 7308 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7309 | |
51aecdc5 | 7310 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7311 | { |
7312 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7313 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7314 | bfd_byte *rptr, *wptr; |
983bddc8 | 7315 | bfd_byte *new_contents; |
74f0fb50 AM |
7316 | bfd_size_type amt; |
7317 | ||
983bddc8 | 7318 | new_contents = NULL; |
51aecdc5 | 7319 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7320 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7321 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7322 | if (opd->adjust == NULL) |
7323 | return FALSE; | |
1e2f5b6e AM |
7324 | |
7325 | /* This seems a waste of time as input .opd sections are all | |
7326 | zeros as generated by gcc, but I suppose there's no reason | |
7327 | this will always be so. We might start putting something in | |
7328 | the third word of .opd entries. */ | |
7329 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7330 | { | |
eea6121a AM |
7331 | bfd_byte *loc; |
7332 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7333 | { |
c9594989 | 7334 | free (loc); |
50bc7936 | 7335 | error_ret: |
c9594989 | 7336 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
6cdc0ccc | 7337 | free (local_syms); |
6cdc0ccc AM |
7338 | if (elf_section_data (sec)->relocs != relstart) |
7339 | free (relstart); | |
b34976b6 | 7340 | return FALSE; |
6cdc0ccc | 7341 | } |
1e2f5b6e AM |
7342 | sec->contents = loc; |
7343 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7344 | } | |
7345 | ||
7346 | elf_section_data (sec)->relocs = relstart; | |
7347 | ||
3f764659 | 7348 | new_contents = sec->contents; |
3f764659 JJ |
7349 | if (add_aux_fields) |
7350 | { | |
7351 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7352 | if (new_contents == NULL) | |
7353 | return FALSE; | |
51aecdc5 | 7354 | need_pad = NULL; |
3f764659 | 7355 | } |
b4f4e59f AM |
7356 | wptr = new_contents; |
7357 | rptr = sec->contents; | |
1e2f5b6e | 7358 | write_rel = relstart; |
51aecdc5 | 7359 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7360 | { |
50bc7936 AM |
7361 | unsigned long r_symndx; |
7362 | asection *sym_sec; | |
7363 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7364 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7365 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7366 | long opd_ent_size; |
7367 | Elf_Internal_Rela *next_rel; | |
7368 | bfd_boolean skip; | |
50bc7936 AM |
7369 | |
7370 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7371 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7372 | r_symndx, ibfd)) |
50bc7936 AM |
7373 | goto error_ret; |
7374 | ||
51aecdc5 AM |
7375 | next_rel = rel + 2; |
7376 | if (next_rel + 1 == relend | |
7377 | || (next_rel + 2 < relend | |
7378 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7379 | ++next_rel; | |
7380 | ||
7381 | /* See if the .opd entry is full 24 byte or | |
7382 | 16 byte (with fd_aux entry overlapped with next | |
7383 | fd_func). */ | |
7384 | opd_ent_size = 24; | |
7385 | if (next_rel == relend) | |
1e2f5b6e | 7386 | { |
51aecdc5 | 7387 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7388 | opd_ent_size = 16; |
51aecdc5 AM |
7389 | } |
7390 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7391 | opd_ent_size = 16; | |
3f764659 | 7392 | |
51aecdc5 AM |
7393 | if (h != NULL |
7394 | && h->root.root.string[0] == '.') | |
7395 | { | |
ed7007c1 | 7396 | fdh = ppc_elf_hash_entry (h)->oh; |
8c5b4e52 AM |
7397 | if (fdh != NULL) |
7398 | { | |
7399 | fdh = ppc_follow_link (fdh); | |
7400 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7401 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7402 | fdh = NULL; | |
7403 | } | |
51aecdc5 | 7404 | } |
1e2f5b6e | 7405 | |
51aecdc5 AM |
7406 | skip = (sym_sec->owner != ibfd |
7407 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7408 | if (skip) | |
7409 | { | |
7410 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7411 | { |
51aecdc5 AM |
7412 | /* Arrange for the function descriptor sym |
7413 | to be dropped. */ | |
7414 | fdh->elf.root.u.def.value = 0; | |
7415 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7416 | } |
51aecdc5 | 7417 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7418 | |
0e1862bb | 7419 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7420 | rel = next_rel; |
7421 | else | |
7422 | while (1) | |
7423 | { | |
7424 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7425 | NULL, h, sym)) | |
7426 | goto error_ret; | |
754021d0 | 7427 | |
51aecdc5 AM |
7428 | if (++rel == next_rel) |
7429 | break; | |
1e2f5b6e | 7430 | |
51aecdc5 AM |
7431 | r_symndx = ELF64_R_SYM (rel->r_info); |
7432 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7433 | r_symndx, ibfd)) | |
7434 | goto error_ret; | |
7435 | } | |
50bc7936 AM |
7436 | } |
7437 | else | |
1e2f5b6e | 7438 | { |
51aecdc5 AM |
7439 | /* We'll be keeping this opd entry. */ |
7440 | long adjust; | |
7441 | ||
7442 | if (fdh != NULL) | |
7443 | { | |
7444 | /* Redefine the function descriptor symbol to | |
7445 | this location in the opd section. It is | |
7446 | necessary to update the value here rather | |
7447 | than using an array of adjustments as we do | |
7448 | for local symbols, because various places | |
7449 | in the generic ELF code use the value | |
7450 | stored in u.def.value. */ | |
7451 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7452 | fdh->adjust_done = 1; | |
7453 | } | |
7454 | ||
7455 | /* Local syms are a bit tricky. We could | |
7456 | tweak them as they can be cached, but | |
7457 | we'd need to look through the local syms | |
7458 | for the function descriptor sym which we | |
7459 | don't have at the moment. So keep an | |
7460 | array of adjustments. */ | |
7461 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7462 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7463 | ||
7464 | if (wptr != rptr) | |
7465 | memcpy (wptr, rptr, opd_ent_size); | |
7466 | wptr += opd_ent_size; | |
7467 | if (add_aux_fields && opd_ent_size == 16) | |
7468 | { | |
7469 | memset (wptr, '\0', 8); | |
7470 | wptr += 8; | |
7471 | } | |
7472 | ||
50bc7936 | 7473 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7474 | new opd entries. */ |
7475 | for ( ; rel != next_rel; ++rel) | |
7476 | { | |
7477 | rel->r_offset += adjust; | |
7478 | if (write_rel != rel) | |
7479 | memcpy (write_rel, rel, sizeof (*rel)); | |
7480 | ++write_rel; | |
7481 | } | |
1e2f5b6e | 7482 | } |
51aecdc5 AM |
7483 | |
7484 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7485 | } |
7486 | ||
3f764659 | 7487 | sec->size = wptr - new_contents; |
1e2f5b6e | 7488 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7489 | if (add_aux_fields) |
7490 | { | |
7491 | free (sec->contents); | |
7492 | sec->contents = new_contents; | |
7493 | } | |
7494 | ||
05bf9422 | 7495 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7496 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7497 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7498 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7499 | some_edited = TRUE; |
1e2f5b6e | 7500 | } |
6cdc0ccc | 7501 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7502 | free (relstart); |
6cdc0ccc | 7503 | |
411e1bfb AM |
7504 | if (local_syms != NULL |
7505 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7506 | { | |
7507 | if (!info->keep_memory) | |
7508 | free (local_syms); | |
7509 | else | |
7510 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7511 | } | |
7512 | } | |
7513 | ||
754021d0 AM |
7514 | if (some_edited) |
7515 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7516 | ||
3f764659 JJ |
7517 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7518 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7519 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7520 | { |
7521 | bfd_byte *p; | |
7522 | ||
7523 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7524 | { | |
7525 | BFD_ASSERT (need_pad->size > 0); | |
7526 | ||
7527 | p = bfd_malloc (need_pad->size + 8); | |
7528 | if (p == NULL) | |
7529 | return FALSE; | |
699733f6 | 7530 | |
2cdcc330 AM |
7531 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7532 | p, 0, need_pad->size)) | |
3f764659 JJ |
7533 | return FALSE; |
7534 | ||
7535 | need_pad->contents = p; | |
7536 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7537 | } | |
7538 | else | |
7539 | { | |
7540 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7541 | if (p == NULL) | |
7542 | return FALSE; | |
7543 | ||
7544 | need_pad->contents = p; | |
7545 | } | |
7546 | ||
7547 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7548 | need_pad->size += 8; | |
7549 | } | |
7550 | ||
411e1bfb AM |
7551 | return TRUE; |
7552 | } | |
7553 | ||
3e04d765 AM |
7554 | /* Analyze inline PLT call relocations to see whether calls to locally |
7555 | defined functions can be converted to direct calls. */ | |
7556 | ||
7557 | bfd_boolean | |
7558 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7559 | { | |
7560 | struct ppc_link_hash_table *htab; | |
7561 | bfd *ibfd; | |
7562 | asection *sec; | |
7563 | bfd_vma low_vma, high_vma, limit; | |
7564 | ||
7565 | htab = ppc_hash_table (info); | |
7566 | if (htab == NULL) | |
7567 | return FALSE; | |
7568 | ||
7569 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7570 | reduced somewhat to cater for possible stubs that might be added | |
7571 | between the call and its destination. */ | |
7572 | if (htab->params->group_size < 0) | |
7573 | { | |
7574 | limit = -htab->params->group_size; | |
7575 | if (limit == 1) | |
7576 | limit = 0x1e00000; | |
7577 | } | |
7578 | else | |
7579 | { | |
7580 | limit = htab->params->group_size; | |
7581 | if (limit == 1) | |
7582 | limit = 0x1c00000; | |
7583 | } | |
7584 | ||
7585 | low_vma = -1; | |
7586 | high_vma = 0; | |
7587 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7588 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7589 | { | |
7590 | if (low_vma > sec->vma) | |
7591 | low_vma = sec->vma; | |
7592 | if (high_vma < sec->vma + sec->size) | |
7593 | high_vma = sec->vma + sec->size; | |
7594 | } | |
7595 | ||
7596 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7597 | convert all inline PLT sequences to direct calls when the symbol | |
7598 | is local. */ | |
7599 | if (high_vma - low_vma < limit) | |
7600 | { | |
7601 | htab->can_convert_all_inline_plt = 1; | |
7602 | return TRUE; | |
7603 | } | |
7604 | ||
7605 | /* Otherwise, go looking through relocs for cases where a direct | |
7606 | call won't reach. Mark the symbol on any such reloc to disable | |
7607 | the optimization and keep the PLT entry as it seems likely that | |
7608 | this will be better than creating trampolines. Note that this | |
7609 | will disable the optimization for all inline PLT calls to a | |
7610 | particular symbol, not just those that won't reach. The | |
7611 | difficulty in doing a more precise optimization is that the | |
7612 | linker needs to make a decision depending on whether a | |
7613 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7614 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7615 | the sequence, and there is nothing that ties those relocs | |
7616 | together except their symbol. */ | |
7617 | ||
7618 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7619 | { | |
7620 | Elf_Internal_Shdr *symtab_hdr; | |
7621 | Elf_Internal_Sym *local_syms; | |
7622 | ||
7623 | if (!is_ppc64_elf (ibfd)) | |
7624 | continue; | |
7625 | ||
7626 | local_syms = NULL; | |
7627 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7628 | ||
7629 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7630 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7631 | && !bfd_is_abs_section (sec->output_section)) | |
7632 | { | |
7633 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7634 | ||
7635 | /* Read the relocations. */ | |
7636 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7637 | info->keep_memory); | |
7638 | if (relstart == NULL) | |
7639 | return FALSE; | |
7640 | ||
7641 | relend = relstart + sec->reloc_count; | |
435edf0b | 7642 | for (rel = relstart; rel < relend; rel++) |
3e04d765 AM |
7643 | { |
7644 | enum elf_ppc64_reloc_type r_type; | |
7645 | unsigned long r_symndx; | |
7646 | asection *sym_sec; | |
7647 | struct elf_link_hash_entry *h; | |
7648 | Elf_Internal_Sym *sym; | |
7649 | unsigned char *tls_maskp; | |
7650 | ||
7651 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7652 | if (r_type != R_PPC64_PLTCALL |
7653 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7654 | continue; |
7655 | ||
7656 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7657 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7658 | r_symndx, ibfd)) | |
7659 | { | |
7660 | if (elf_section_data (sec)->relocs != relstart) | |
7661 | free (relstart); | |
c9594989 | 7662 | if (symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7663 | free (local_syms); |
7664 | return FALSE; | |
7665 | } | |
7666 | ||
7667 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7668 | { | |
7669 | bfd_vma from, to; | |
7670 | if (h != NULL) | |
7671 | to = h->root.u.def.value; | |
7672 | else | |
7673 | to = sym->st_value; | |
7674 | to += (rel->r_addend | |
7675 | + sym_sec->output_offset | |
7676 | + sym_sec->output_section->vma); | |
7677 | from = (rel->r_offset | |
7678 | + sec->output_offset | |
7679 | + sec->output_section->vma); | |
5663e321 AM |
7680 | if (to - from + limit < 2 * limit |
7681 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7682 | && (((h ? h->other : sym->st_other) | |
7683 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7684 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7685 | *tls_maskp &= ~PLT_KEEP; |
7686 | } | |
7687 | } | |
7688 | if (elf_section_data (sec)->relocs != relstart) | |
7689 | free (relstart); | |
7690 | } | |
7691 | ||
7692 | if (local_syms != NULL | |
7693 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7694 | { | |
7695 | if (!info->keep_memory) | |
7696 | free (local_syms); | |
7697 | else | |
7698 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7699 | } | |
7700 | } | |
7701 | ||
7702 | return TRUE; | |
7703 | } | |
7704 | ||
c9405344 AM |
7705 | /* Set htab->tls_get_addr and various other info specific to TLS. |
7706 | This needs to run before dynamic symbols are processed in | |
7707 | bfd_elf_size_dynamic_sections. */ | |
411e1bfb | 7708 | |
c9405344 | 7709 | bfd_boolean |
e7d1c40c | 7710 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7711 | { |
411e1bfb | 7712 | struct ppc_link_hash_table *htab; |
9e7028aa | 7713 | struct elf_link_hash_entry *tga, *tga_fd, *desc, *desc_fd; |
411e1bfb | 7714 | |
411e1bfb | 7715 | htab = ppc_hash_table (info); |
4dfe6ac6 | 7716 | if (htab == NULL) |
c9405344 | 7717 | return FALSE; |
4dfe6ac6 | 7718 | |
ee67d69a AM |
7719 | if (abiversion (info->output_bfd) == 1) |
7720 | htab->opd_abi = 1; | |
7721 | ||
e7d1c40c | 7722 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7723 | htab->do_multi_toc = 0; |
7724 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7725 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7726 | |
8b5f1ed8 AM |
7727 | /* Default to --no-plt-localentry, as this option can cause problems |
7728 | with symbol interposition. For example, glibc libpthread.so and | |
7729 | libc.so duplicate many pthread symbols, with a fallback | |
7730 | implementation in libc.so. In some cases the fallback does more | |
7731 | work than the pthread implementation. __pthread_condattr_destroy | |
7732 | is one such symbol: the libpthread.so implementation is | |
7733 | localentry:0 while the libc.so implementation is localentry:8. | |
7734 | An app that "cleverly" uses dlopen to only load necessary | |
7735 | libraries at runtime may omit loading libpthread.so when not | |
7736 | running multi-threaded, which then results in the libc.so | |
7737 | fallback symbols being used and ld.so complaining. Now there | |
7738 | are workarounds in ld (see non_zero_localentry) to detect the | |
7739 | pthread situation, but that may not be the only case where | |
7740 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7741 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7742 | htab->params->plt_localentry0 = 0; |
3cd7c7d7 AM |
7743 | if (htab->params->plt_localentry0 && htab->has_power10_relocs) |
7744 | { | |
7745 | /* The issue is that __glink_PLTresolve saves r2, which is done | |
7746 | because glibc ld.so _dl_runtime_resolve restores r2 to support | |
7747 | a glibc plt call optimisation where global entry code is | |
7748 | skipped on calls that resolve to the same binary. The | |
7749 | __glink_PLTresolve save of r2 is incompatible with code | |
7750 | making tail calls, because the tail call might go via the | |
7751 | resolver and thus overwrite the proper saved r2. */ | |
7752 | _bfd_error_handler (_("warning: --plt-localentry is incompatible with " | |
7753 | "power10 pc-relative code")); | |
7754 | htab->params->plt_localentry0 = 0; | |
7755 | } | |
d44c746a AM |
7756 | if (htab->params->plt_localentry0 |
7757 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7758 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7759 | _bfd_error_handler |
7760 | (_("warning: --plt-localentry is especially dangerous without " | |
7761 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7762 | |
9e7028aa AM |
7763 | tga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
7764 | FALSE, FALSE, TRUE); | |
7765 | htab->tls_get_addr = ppc_elf_hash_entry (tga); | |
7766 | ||
a7f2871e | 7767 | /* Move dynamic linking info to the function descriptor sym. */ |
9e7028aa AM |
7768 | if (tga != NULL) |
7769 | func_desc_adjust (tga, info); | |
7770 | tga_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7771 | FALSE, FALSE, TRUE); | |
7772 | htab->tls_get_addr_fd = ppc_elf_hash_entry (tga_fd); | |
7773 | ||
7774 | desc = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_desc", | |
7775 | FALSE, FALSE, TRUE); | |
7776 | htab->tga_desc = ppc_elf_hash_entry (desc); | |
7777 | if (desc != NULL) | |
7778 | func_desc_adjust (desc, info); | |
7779 | desc_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_desc", | |
7780 | FALSE, FALSE, TRUE); | |
7781 | htab->tga_desc_fd = ppc_elf_hash_entry (desc_fd); | |
7782 | ||
7c9cf415 | 7783 | if (htab->params->tls_get_addr_opt) |
a7f2871e | 7784 | { |
9e7028aa | 7785 | struct elf_link_hash_entry *opt, *opt_fd; |
a7f2871e AM |
7786 | |
7787 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7788 | FALSE, FALSE, TRUE); | |
7789 | if (opt != NULL) | |
7790 | func_desc_adjust (opt, info); | |
7791 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7792 | FALSE, FALSE, TRUE); | |
7793 | if (opt_fd != NULL | |
7794 | && (opt_fd->root.type == bfd_link_hash_defined | |
7795 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7796 | { | |
7797 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7798 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7799 | be calling __tls_get_addr via a plt call stub, then | |
7800 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
9e7028aa AM |
7801 | if (!(htab->elf.dynamic_sections_created |
7802 | && tga_fd != NULL | |
7803 | && (tga_fd->type == STT_FUNC | |
7804 | || tga_fd->needs_plt) | |
7805 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7806 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))) | |
7807 | tga_fd = NULL; | |
7808 | if (!(htab->elf.dynamic_sections_created | |
7809 | && desc_fd != NULL | |
7810 | && (desc_fd->type == STT_FUNC | |
7811 | || desc_fd->needs_plt) | |
7812 | && !(SYMBOL_CALLS_LOCAL (info, desc_fd) | |
7813 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, desc_fd)))) | |
7814 | desc_fd = NULL; | |
7815 | ||
7816 | if (tga_fd != NULL || desc_fd != NULL) | |
7817 | { | |
7818 | struct plt_entry *ent = NULL; | |
7819 | ||
7820 | if (tga_fd != NULL) | |
7821 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7822 | if (ent->plt.refcount > 0) | |
7823 | break; | |
7824 | if (ent == NULL && desc_fd != NULL) | |
7825 | for (ent = desc_fd->plt.plist; ent != NULL; ent = ent->next) | |
7826 | if (ent->plt.refcount > 0) | |
7827 | break; | |
a7f2871e AM |
7828 | if (ent != NULL) |
7829 | { | |
9e7028aa AM |
7830 | if (tga_fd != NULL) |
7831 | { | |
7832 | tga_fd->root.type = bfd_link_hash_indirect; | |
7833 | tga_fd->root.u.i.link = &opt_fd->root; | |
7834 | tga_fd->root.u.i.warning = NULL; | |
7835 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7836 | } | |
7837 | if (desc_fd != NULL) | |
7838 | { | |
7839 | desc_fd->root.type = bfd_link_hash_indirect; | |
7840 | desc_fd->root.u.i.link = &opt_fd->root; | |
7841 | desc_fd->root.u.i.warning = NULL; | |
7842 | ppc64_elf_copy_indirect_symbol (info, opt_fd, desc_fd); | |
7843 | } | |
b531344c | 7844 | opt_fd->mark = 1; |
a7f2871e AM |
7845 | if (opt_fd->dynindx != -1) |
7846 | { | |
7847 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7848 | opt_fd->dynindx = -1; | |
7849 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7850 | opt_fd->dynstr_index); | |
7851 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
c9405344 | 7852 | return FALSE; |
a7f2871e | 7853 | } |
9e7028aa | 7854 | if (tga_fd != NULL) |
a7f2871e | 7855 | { |
9e7028aa | 7856 | htab->tls_get_addr_fd = ppc_elf_hash_entry (opt_fd); |
9e51d549 | 7857 | tga = (struct elf_link_hash_entry *) htab->tls_get_addr; |
9e7028aa AM |
7858 | if (opt != NULL && tga != NULL) |
7859 | { | |
7860 | tga->root.type = bfd_link_hash_indirect; | |
7861 | tga->root.u.i.link = &opt->root; | |
7862 | tga->root.u.i.warning = NULL; | |
7863 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7864 | opt->mark = 1; | |
7865 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7866 | tga->forced_local); | |
7867 | htab->tls_get_addr = ppc_elf_hash_entry (opt); | |
7868 | } | |
7869 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7870 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7871 | if (htab->tls_get_addr != NULL) | |
7872 | { | |
7873 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7874 | htab->tls_get_addr->is_func = 1; | |
7875 | } | |
a7f2871e | 7876 | } |
9e7028aa | 7877 | if (desc_fd != NULL) |
a7f2871e | 7878 | { |
9e7028aa AM |
7879 | htab->tga_desc_fd = ppc_elf_hash_entry (opt_fd); |
7880 | if (opt != NULL && desc != NULL) | |
7881 | { | |
7882 | desc->root.type = bfd_link_hash_indirect; | |
7883 | desc->root.u.i.link = &opt->root; | |
7884 | desc->root.u.i.warning = NULL; | |
7885 | ppc64_elf_copy_indirect_symbol (info, opt, desc); | |
7886 | opt->mark = 1; | |
7887 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7888 | desc->forced_local); | |
7889 | htab->tga_desc = ppc_elf_hash_entry (opt); | |
7890 | } | |
7891 | htab->tga_desc_fd->oh = htab->tga_desc; | |
7892 | htab->tga_desc_fd->is_func_descriptor = 1; | |
7893 | if (htab->tga_desc != NULL) | |
7894 | { | |
7895 | htab->tga_desc->oh = htab->tga_desc_fd; | |
7896 | htab->tga_desc->is_func = 1; | |
7897 | } | |
a7f2871e AM |
7898 | } |
7899 | } | |
7900 | } | |
7901 | } | |
7c9cf415 AM |
7902 | else if (htab->params->tls_get_addr_opt < 0) |
7903 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7904 | } |
9e7028aa AM |
7905 | |
7906 | if (htab->tga_desc_fd != NULL | |
7907 | && htab->params->tls_get_addr_opt | |
7908 | && htab->params->no_tls_get_addr_regsave == -1) | |
7909 | htab->params->no_tls_get_addr_regsave = 0; | |
7910 | ||
c9405344 | 7911 | return TRUE; |
3a71aa26 | 7912 | } |
8387904d | 7913 | |
3a71aa26 | 7914 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
9e7028aa | 7915 | any of HASH1, HASH2, HASH3, or HASH4. */ |
8387904d | 7916 | |
3a71aa26 AM |
7917 | static bfd_boolean |
7918 | branch_reloc_hash_match (const bfd *ibfd, | |
7919 | const Elf_Internal_Rela *rel, | |
7920 | const struct ppc_link_hash_entry *hash1, | |
9e7028aa AM |
7921 | const struct ppc_link_hash_entry *hash2, |
7922 | const struct ppc_link_hash_entry *hash3, | |
7923 | const struct ppc_link_hash_entry *hash4) | |
3a71aa26 AM |
7924 | { |
7925 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7926 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7927 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7928 | ||
e054468f | 7929 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7930 | { |
3a71aa26 AM |
7931 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7932 | struct elf_link_hash_entry *h; | |
8387904d | 7933 | |
3a71aa26 | 7934 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7935 | h = elf_follow_link (h); |
9e51d549 AM |
7936 | if (h == (struct elf_link_hash_entry *) hash1 |
7937 | || h == (struct elf_link_hash_entry *) hash2 | |
7938 | || h == (struct elf_link_hash_entry *) hash3 | |
7939 | || h == (struct elf_link_hash_entry *) hash4) | |
3a71aa26 | 7940 | return TRUE; |
a48ebf4d | 7941 | } |
3a71aa26 | 7942 | return FALSE; |
951fd09b | 7943 | } |
411e1bfb | 7944 | |
951fd09b AM |
7945 | /* Run through all the TLS relocs looking for optimization |
7946 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7947 | a preliminary section layout so that we know the TLS segment | |
7948 | offsets. We can't optimize earlier because some optimizations need | |
7949 | to know the tp offset, and we need to optimize before allocating | |
7950 | dynamic relocations. */ | |
7951 | ||
7952 | bfd_boolean | |
33c0ec9d | 7953 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7954 | { |
7955 | bfd *ibfd; | |
7956 | asection *sec; | |
7957 | struct ppc_link_hash_table *htab; | |
663a1470 | 7958 | unsigned char *toc_ref; |
102890f0 | 7959 | int pass; |
951fd09b | 7960 | |
3cbc1e5e | 7961 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7962 | return TRUE; |
7963 | ||
951fd09b | 7964 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7965 | if (htab == NULL) |
7966 | return FALSE; | |
7967 | ||
252dcdf4 AM |
7968 | htab->do_tls_opt = 1; |
7969 | ||
663a1470 AM |
7970 | /* Make two passes over the relocs. On the first pass, mark toc |
7971 | entries involved with tls relocs, and check that tls relocs | |
7972 | involved in setting up a tls_get_addr call are indeed followed by | |
7973 | such a call. If they are not, we can't do any tls optimization. | |
7974 | On the second pass twiddle tls_mask flags to notify | |
7975 | relocate_section that optimization can be done, and adjust got | |
7976 | and plt refcounts. */ | |
7977 | toc_ref = NULL; | |
7978 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7979 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7980 | { |
7981 | Elf_Internal_Sym *locsyms = NULL; | |
7982 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7983 | ||
102890f0 AM |
7984 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7985 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7986 | { | |
7987 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7988 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7989 | |
102890f0 AM |
7990 | /* Read the relocations. */ |
7991 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7992 | info->keep_memory); | |
7993 | if (relstart == NULL) | |
2915c55b JK |
7994 | { |
7995 | free (toc_ref); | |
7996 | return FALSE; | |
7997 | } | |
411e1bfb | 7998 | |
102890f0 AM |
7999 | relend = relstart + sec->reloc_count; |
8000 | for (rel = relstart; rel < relend; rel++) | |
8001 | { | |
8002 | enum elf_ppc64_reloc_type r_type; | |
8003 | unsigned long r_symndx; | |
8004 | struct elf_link_hash_entry *h; | |
8005 | Elf_Internal_Sym *sym; | |
8006 | asection *sym_sec; | |
f961d9dd | 8007 | unsigned char *tls_mask; |
46e9995a | 8008 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 AM |
8009 | bfd_vma value; |
8010 | bfd_boolean ok_tprel, is_local; | |
8011 | long toc_ref_index = 0; | |
8012 | int expecting_tls_get_addr = 0; | |
663a1470 | 8013 | bfd_boolean ret = FALSE; |
411e1bfb | 8014 | |
102890f0 AM |
8015 | r_symndx = ELF64_R_SYM (rel->r_info); |
8016 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8017 | r_symndx, ibfd)) | |
8018 | { | |
8019 | err_free_rel: | |
8020 | if (elf_section_data (sec)->relocs != relstart) | |
8021 | free (relstart); | |
c9594989 AM |
8022 | free (toc_ref); |
8023 | if (elf_symtab_hdr (ibfd).contents | |
8024 | != (unsigned char *) locsyms) | |
102890f0 | 8025 | free (locsyms); |
663a1470 | 8026 | return ret; |
102890f0 | 8027 | } |
411e1bfb | 8028 | |
102890f0 AM |
8029 | if (h != NULL) |
8030 | { | |
766bc656 AM |
8031 | if (h->root.type == bfd_link_hash_defined |
8032 | || h->root.type == bfd_link_hash_defweak) | |
8033 | value = h->root.u.def.value; | |
8034 | else if (h->root.type == bfd_link_hash_undefweak) | |
8035 | value = 0; | |
8036 | else | |
663a1470 AM |
8037 | { |
8038 | found_tls_get_addr_arg = 0; | |
8039 | continue; | |
8040 | } | |
102890f0 AM |
8041 | } |
8042 | else | |
8043 | /* Symbols referenced by TLS relocs must be of type | |
8044 | STT_TLS. So no need for .opd local sym adjust. */ | |
8045 | value = sym->st_value; | |
8046 | ||
8047 | ok_tprel = FALSE; | |
f749f26e AM |
8048 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
8049 | if (is_local) | |
102890f0 | 8050 | { |
766bc656 AM |
8051 | if (h != NULL |
8052 | && h->root.type == bfd_link_hash_undefweak) | |
8053 | ok_tprel = TRUE; | |
c27b8c2a AM |
8054 | else if (sym_sec != NULL |
8055 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8056 | { |
8057 | value += sym_sec->output_offset; | |
8058 | value += sym_sec->output_section->vma; | |
0b147428 | 8059 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
8060 | /* Note that even though the prefix insns |
8061 | allow a 1<<33 offset we use the same test | |
8062 | as for addis;addi. There may be a mix of | |
8063 | pcrel and non-pcrel code and the decision | |
8064 | to optimise is per symbol, not per TLS | |
8065 | sequence. */ | |
0b147428 | 8066 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 8067 | } |
102890f0 | 8068 | } |
951fd09b | 8069 | |
102890f0 | 8070 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8071 | /* If this section has old-style __tls_get_addr calls |
8072 | without marker relocs, then check that each | |
8073 | __tls_get_addr call reloc is preceded by a reloc | |
8074 | that conceivably belongs to the __tls_get_addr arg | |
8075 | setup insn. If we don't find matching arg setup | |
8076 | relocs, don't do any tls optimization. */ | |
8077 | if (pass == 0 | |
9737e8af | 8078 | && sec->nomark_tls_get_addr |
663a1470 | 8079 | && h != NULL |
ed7007c1 | 8080 | && is_tls_get_addr (h, htab) |
663a1470 AM |
8081 | && !found_tls_get_addr_arg |
8082 | && is_branch_reloc (r_type)) | |
8083 | { | |
25f53a85 | 8084 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8085 | "TLS optimization disabled\n"), |
8086 | ibfd, sec, rel->r_offset); | |
8087 | ret = TRUE; | |
8088 | goto err_free_rel; | |
8089 | } | |
8090 | ||
8091 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8092 | switch (r_type) |
8093 | { | |
8094 | case R_PPC64_GOT_TLSLD16: | |
8095 | case R_PPC64_GOT_TLSLD16_LO: | |
87c69f97 | 8096 | case R_PPC64_GOT_TLSLD_PCREL34: |
102890f0 | 8097 | expecting_tls_get_addr = 1; |
663a1470 | 8098 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8099 | /* Fall through. */ |
102890f0 AM |
8100 | |
8101 | case R_PPC64_GOT_TLSLD16_HI: | |
8102 | case R_PPC64_GOT_TLSLD16_HA: | |
8103 | /* These relocs should never be against a symbol | |
8104 | defined in a shared lib. Leave them alone if | |
8105 | that turns out to be the case. */ | |
8106 | if (!is_local) | |
8107 | continue; | |
411e1bfb | 8108 | |
102890f0 | 8109 | /* LD -> LE */ |
411e1bfb | 8110 | tls_set = 0; |
102890f0 AM |
8111 | tls_clear = TLS_LD; |
8112 | tls_type = TLS_TLS | TLS_LD; | |
8113 | break; | |
411e1bfb | 8114 | |
102890f0 AM |
8115 | case R_PPC64_GOT_TLSGD16: |
8116 | case R_PPC64_GOT_TLSGD16_LO: | |
87c69f97 | 8117 | case R_PPC64_GOT_TLSGD_PCREL34: |
102890f0 | 8118 | expecting_tls_get_addr = 1; |
663a1470 | 8119 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8120 | /* Fall through. */ |
102890f0 AM |
8121 | |
8122 | case R_PPC64_GOT_TLSGD16_HI: | |
8123 | case R_PPC64_GOT_TLSGD16_HA: | |
8124 | if (ok_tprel) | |
8125 | /* GD -> LE */ | |
411e1bfb | 8126 | tls_set = 0; |
102890f0 AM |
8127 | else |
8128 | /* GD -> IE */ | |
b00a0a86 | 8129 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
8130 | tls_clear = TLS_GD; |
8131 | tls_type = TLS_TLS | TLS_GD; | |
8132 | break; | |
8133 | ||
87c69f97 | 8134 | case R_PPC64_GOT_TPREL_PCREL34: |
102890f0 AM |
8135 | case R_PPC64_GOT_TPREL16_DS: |
8136 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8137 | case R_PPC64_GOT_TPREL16_HI: | |
8138 | case R_PPC64_GOT_TPREL16_HA: | |
8139 | if (ok_tprel) | |
8140 | { | |
8141 | /* IE -> LE */ | |
8142 | tls_set = 0; | |
8143 | tls_clear = TLS_TPREL; | |
8144 | tls_type = TLS_TLS | TLS_TPREL; | |
8145 | break; | |
8146 | } | |
411e1bfb AM |
8147 | continue; |
8148 | ||
727fc41e | 8149 | case R_PPC64_TLSLD: |
7d04a20a AM |
8150 | if (!is_local) |
8151 | continue; | |
8152 | /* Fall through. */ | |
8153 | case R_PPC64_TLSGD: | |
23cedd1d AM |
8154 | if (rel + 1 < relend |
8155 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8156 | { | |
8157 | if (pass != 0 | |
2cdcc330 | 8158 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
8159 | != R_PPC64_PLTSEQ) |
8160 | && (ELF64_R_TYPE (rel[1].r_info) | |
8161 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
8162 | { |
8163 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8164 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8165 | r_symndx, ibfd)) |
23cedd1d AM |
8166 | goto err_free_rel; |
8167 | if (h != NULL) | |
8168 | { | |
8169 | struct plt_entry *ent = NULL; | |
8170 | ||
8171 | for (ent = h->plt.plist; | |
8172 | ent != NULL; | |
8173 | ent = ent->next) | |
8174 | if (ent->addend == rel[1].r_addend) | |
8175 | break; | |
8176 | ||
8177 | if (ent != NULL | |
8178 | && ent->plt.refcount > 0) | |
8179 | ent->plt.refcount -= 1; | |
8180 | } | |
8181 | } | |
8182 | continue; | |
8183 | } | |
663a1470 | 8184 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8185 | /* Fall through. */ |
663a1470 AM |
8186 | |
8187 | case R_PPC64_TLS: | |
8188 | case R_PPC64_TOC16: | |
8189 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8190 | if (sym_sec == NULL || sym_sec != toc) |
8191 | continue; | |
8192 | ||
8193 | /* Mark this toc entry as referenced by a TLS | |
8194 | code sequence. We can do that now in the | |
8195 | case of R_PPC64_TLS, and after checking for | |
8196 | tls_get_addr for the TOC16 relocs. */ | |
8197 | if (toc_ref == NULL) | |
2cdcc330 AM |
8198 | toc_ref |
8199 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8200 | if (toc_ref == NULL) |
8201 | goto err_free_rel; | |
8202 | ||
102890f0 AM |
8203 | if (h != NULL) |
8204 | value = h->root.u.def.value; | |
8205 | else | |
8206 | value = sym->st_value; | |
8207 | value += rel->r_addend; | |
73242275 AM |
8208 | if (value % 8 != 0) |
8209 | continue; | |
8210 | BFD_ASSERT (value < toc->size | |
8211 | && toc->output_offset % 8 == 0); | |
663a1470 | 8212 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8213 | if (r_type == R_PPC64_TLS |
8214 | || r_type == R_PPC64_TLSGD | |
8215 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8216 | { |
8217 | toc_ref[toc_ref_index] = 1; | |
8218 | continue; | |
8219 | } | |
8220 | ||
8221 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8222 | continue; | |
8223 | ||
8224 | tls_set = 0; | |
8225 | tls_clear = 0; | |
8226 | expecting_tls_get_addr = 2; | |
8227 | break; | |
8228 | ||
8229 | case R_PPC64_TPREL64: | |
8230 | if (pass == 0 | |
8231 | || sec != toc | |
8232 | || toc_ref == NULL | |
663a1470 | 8233 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8234 | continue; |
8235 | if (ok_tprel) | |
8236 | { | |
8237 | /* IE -> LE */ | |
8238 | tls_set = TLS_EXPLICIT; | |
8239 | tls_clear = TLS_TPREL; | |
8240 | break; | |
8241 | } | |
8242 | continue; | |
8243 | ||
8244 | case R_PPC64_DTPMOD64: | |
8245 | if (pass == 0 | |
8246 | || sec != toc | |
8247 | || toc_ref == NULL | |
663a1470 | 8248 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8249 | continue; |
8250 | if (rel + 1 < relend | |
8251 | && (rel[1].r_info | |
8252 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8253 | && rel[1].r_offset == rel->r_offset + 8) | |
8254 | { | |
8255 | if (ok_tprel) | |
8256 | /* GD -> LE */ | |
8257 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8258 | else | |
8259 | /* GD -> IE */ | |
b00a0a86 | 8260 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8261 | tls_clear = TLS_GD; |
8262 | } | |
8263 | else | |
8264 | { | |
8265 | if (!is_local) | |
8266 | continue; | |
8267 | ||
8268 | /* LD -> LE */ | |
8269 | tls_set = TLS_EXPLICIT; | |
8270 | tls_clear = TLS_LD; | |
8271 | } | |
8272 | break; | |
8273 | ||
252dcdf4 AM |
8274 | case R_PPC64_TPREL16_HA: |
8275 | if (pass == 0) | |
8276 | { | |
8277 | unsigned char buf[4]; | |
8278 | unsigned int insn; | |
8279 | bfd_vma off = rel->r_offset & ~3; | |
8280 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
8281 | off, 4)) | |
8282 | goto err_free_rel; | |
8283 | insn = bfd_get_32 (ibfd, buf); | |
8284 | /* addis rt,13,imm */ | |
8285 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
8286 | != ((15u << 26) | (13 << 16))) | |
8287 | { | |
8288 | /* xgettext:c-format */ | |
8289 | info->callbacks->minfo | |
8290 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8291 | ibfd, sec, off, "R_PPC64_TPREL16_HA", insn); | |
8292 | htab->do_tls_opt = 0; | |
8293 | } | |
8294 | } | |
8295 | continue; | |
8296 | ||
8297 | case R_PPC64_TPREL16_HI: | |
8298 | case R_PPC64_TPREL16_HIGH: | |
8299 | case R_PPC64_TPREL16_HIGHA: | |
8300 | case R_PPC64_TPREL16_HIGHER: | |
8301 | case R_PPC64_TPREL16_HIGHERA: | |
8302 | case R_PPC64_TPREL16_HIGHEST: | |
8303 | case R_PPC64_TPREL16_HIGHESTA: | |
8304 | /* These can all be used in sequences along with | |
8305 | TPREL16_LO or TPREL16_LO_DS in ways we aren't | |
8306 | able to verify easily. */ | |
8307 | htab->do_tls_opt = 0; | |
8308 | continue; | |
8309 | ||
102890f0 AM |
8310 | default: |
8311 | continue; | |
8312 | } | |
8313 | ||
8314 | if (pass == 0) | |
8315 | { | |
727fc41e | 8316 | if (!expecting_tls_get_addr |
9737e8af | 8317 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8318 | continue; |
8319 | ||
3a71aa26 AM |
8320 | if (rel + 1 < relend |
8321 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9e7028aa AM |
8322 | htab->tls_get_addr_fd, |
8323 | htab->tga_desc_fd, | |
3a71aa26 | 8324 | htab->tls_get_addr, |
9e7028aa | 8325 | htab->tga_desc)) |
102890f0 | 8326 | { |
3a71aa26 | 8327 | if (expecting_tls_get_addr == 2) |
102890f0 | 8328 | { |
3a71aa26 | 8329 | /* Check for toc tls entries. */ |
f961d9dd | 8330 | unsigned char *toc_tls; |
3a71aa26 AM |
8331 | int retval; |
8332 | ||
8333 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8334 | &locsyms, | |
8335 | rel, ibfd); | |
8336 | if (retval == 0) | |
8337 | goto err_free_rel; | |
663a1470 AM |
8338 | if (toc_tls != NULL) |
8339 | { | |
37da22e5 AM |
8340 | if ((*toc_tls & TLS_TLS) != 0 |
8341 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8342 | found_tls_get_addr_arg = 1; |
8343 | if (retval > 1) | |
8344 | toc_ref[toc_ref_index] = 1; | |
8345 | } | |
102890f0 | 8346 | } |
3a71aa26 | 8347 | continue; |
102890f0 AM |
8348 | } |
8349 | ||
102890f0 AM |
8350 | /* Uh oh, we didn't find the expected call. We |
8351 | could just mark this symbol to exclude it | |
8352 | from tls optimization but it's safer to skip | |
663a1470 | 8353 | the entire optimization. */ |
695344c0 | 8354 | /* xgettext:c-format */ |
25f53a85 | 8355 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8356 | "TLS optimization disabled\n"), |
8357 | ibfd, sec, rel->r_offset); | |
8358 | ret = TRUE; | |
8359 | goto err_free_rel; | |
102890f0 AM |
8360 | } |
8361 | ||
37da22e5 AM |
8362 | /* If we don't have old-style __tls_get_addr calls |
8363 | without TLSGD/TLSLD marker relocs, and we haven't | |
8364 | found a new-style __tls_get_addr call with a | |
8365 | marker for this symbol, then we either have a | |
8366 | broken object file or an -mlongcall style | |
8367 | indirect call to __tls_get_addr without a marker. | |
8368 | Disable optimization in this case. */ | |
8369 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8370 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8371 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8372 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8373 | != (TLS_TLS | TLS_MARK))) | |
8374 | continue; | |
8375 | ||
7d04a20a | 8376 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8377 | { |
23cedd1d AM |
8378 | struct plt_entry *ent = NULL; |
8379 | ||
9e7028aa AM |
8380 | if (htab->tls_get_addr_fd != NULL) |
8381 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8382 | ent != NULL; | |
8383 | ent = ent->next) | |
8384 | if (ent->addend == 0) | |
8385 | break; | |
8386 | ||
8387 | if (ent == NULL && htab->tga_desc_fd != NULL) | |
8388 | for (ent = htab->tga_desc_fd->elf.plt.plist; | |
8389 | ent != NULL; | |
8390 | ent = ent->next) | |
8391 | if (ent->addend == 0) | |
8392 | break; | |
8393 | ||
8394 | if (ent == NULL && htab->tls_get_addr != NULL) | |
23cedd1d AM |
8395 | for (ent = htab->tls_get_addr->elf.plt.plist; |
8396 | ent != NULL; | |
8397 | ent = ent->next) | |
8398 | if (ent->addend == 0) | |
102890f0 | 8399 | break; |
411e1bfb | 8400 | |
9e7028aa AM |
8401 | if (ent == NULL && htab->tga_desc != NULL) |
8402 | for (ent = htab->tga_desc->elf.plt.plist; | |
23cedd1d AM |
8403 | ent != NULL; |
8404 | ent = ent->next) | |
8405 | if (ent->addend == 0) | |
102890f0 | 8406 | break; |
23cedd1d AM |
8407 | |
8408 | if (ent != NULL | |
8409 | && ent->plt.refcount > 0) | |
8410 | ent->plt.refcount -= 1; | |
102890f0 | 8411 | } |
411e1bfb | 8412 | |
102890f0 | 8413 | if (tls_clear == 0) |
30038c59 AM |
8414 | continue; |
8415 | ||
102890f0 AM |
8416 | if ((tls_set & TLS_EXPLICIT) == 0) |
8417 | { | |
8418 | struct got_entry *ent; | |
411e1bfb | 8419 | |
102890f0 AM |
8420 | /* Adjust got entry for this reloc. */ |
8421 | if (h != NULL) | |
8422 | ent = h->got.glist; | |
8423 | else | |
8424 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8425 | |
102890f0 AM |
8426 | for (; ent != NULL; ent = ent->next) |
8427 | if (ent->addend == rel->r_addend | |
8428 | && ent->owner == ibfd | |
8429 | && ent->tls_type == tls_type) | |
8430 | break; | |
8431 | if (ent == NULL) | |
8432 | abort (); | |
411e1bfb | 8433 | |
102890f0 AM |
8434 | if (tls_set == 0) |
8435 | { | |
8436 | /* We managed to get rid of a got entry. */ | |
8437 | if (ent->got.refcount > 0) | |
8438 | ent->got.refcount -= 1; | |
8439 | } | |
8440 | } | |
8441 | else | |
8442 | { | |
8443 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8444 | we'll lose one or two dyn relocs. */ | |
8445 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8446 | NULL, h, sym)) |
102890f0 | 8447 | return FALSE; |
411e1bfb | 8448 | |
102890f0 AM |
8449 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8450 | { | |
8451 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8452 | NULL, h, sym)) |
102890f0 AM |
8453 | return FALSE; |
8454 | } | |
8455 | } | |
411e1bfb | 8456 | |
46e9995a | 8457 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8458 | *tls_mask &= ~tls_clear; |
8459 | } | |
8c1d1bb8 | 8460 | |
102890f0 AM |
8461 | if (elf_section_data (sec)->relocs != relstart) |
8462 | free (relstart); | |
8463 | } | |
411e1bfb | 8464 | |
663a1470 AM |
8465 | if (locsyms != NULL |
8466 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8467 | { | |
8468 | if (!info->keep_memory) | |
8469 | free (locsyms); | |
8470 | else | |
8471 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8472 | } | |
8473 | } | |
411e1bfb | 8474 | |
c9594989 | 8475 | free (toc_ref); |
b34976b6 | 8476 | return TRUE; |
1e2f5b6e | 8477 | } |
b34976b6 | 8478 | |
c5614fa4 AM |
8479 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8480 | the values of any global symbols in a toc section that has been | |
8481 | edited. Globals in toc sections should be a rarity, so this function | |
8482 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8483 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8484 | |
8485 | struct adjust_toc_info | |
8486 | { | |
8487 | asection *toc; | |
8488 | unsigned long *skip; | |
8489 | bfd_boolean global_toc_syms; | |
8490 | }; | |
8491 | ||
ba761f19 AM |
8492 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8493 | ||
c5614fa4 AM |
8494 | static bfd_boolean |
8495 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8496 | { | |
8497 | struct ppc_link_hash_entry *eh; | |
8498 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8499 | unsigned long i; |
c5614fa4 | 8500 | |
c5614fa4 AM |
8501 | if (h->root.type != bfd_link_hash_defined |
8502 | && h->root.type != bfd_link_hash_defweak) | |
8503 | return TRUE; | |
8504 | ||
ed7007c1 | 8505 | eh = ppc_elf_hash_entry (h); |
c5614fa4 AM |
8506 | if (eh->adjust_done) |
8507 | return TRUE; | |
8508 | ||
8509 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8510 | { | |
854b41e7 AM |
8511 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8512 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8513 | else |
854b41e7 AM |
8514 | i = eh->elf.root.u.def.value >> 3; |
8515 | ||
ba761f19 | 8516 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8517 | { |
4eca0228 | 8518 | _bfd_error_handler |
854b41e7 AM |
8519 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8520 | do | |
8521 | ++i; | |
ba761f19 | 8522 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8523 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8524 | } |
854b41e7 AM |
8525 | |
8526 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8527 | eh->adjust_done = 1; |
8528 | } | |
8529 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8530 | toc_inf->global_toc_syms = TRUE; | |
8531 | ||
8532 | return TRUE; | |
8533 | } | |
8534 | ||
39eeab25 AM |
8535 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8536 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8537 | |
8538 | static bfd_boolean | |
39eeab25 | 8539 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8540 | { |
2365f8d7 AM |
8541 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8542 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8543 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8544 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8545 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8546 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8547 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8548 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8549 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8550 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8551 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8552 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8553 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8554 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8555 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8556 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8557 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8558 | /* Exclude lfqu by testing reloc. If relocs are ever |
8559 | defined for the reduced D field in psq_lu then those | |
8560 | will need testing too. */ | |
8561 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8562 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8563 | && (insn & 1) == 0) |
2365f8d7 AM |
8564 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8565 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8566 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8567 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8568 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8569 | && (insn & 1) == 0)); |
560c8763 AM |
8570 | } |
8571 | ||
4a421c53 AM |
8572 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8573 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8574 | load/store rt,off(ra) |
4a421c53 | 8575 | or |
d4b87b1e | 8576 | pla ra,symbol@pcrel |
dd9b12c2 | 8577 | load/store rt,off(ra) |
4a421c53 | 8578 | may be translated to |
dd9b12c2 | 8579 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8580 | nop. |
8581 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8582 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8583 | |
8584 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8585 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8586 | while *PINSN2 is the second instruction. */ |
8587 | ||
8588 | static bfd_boolean | |
dd9b12c2 | 8589 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8590 | { |
77486630 AM |
8591 | uint64_t insn1 = *pinsn1; |
8592 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8593 | bfd_signed_vma off; |
4a421c53 | 8594 | |
77486630 AM |
8595 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8596 | { | |
8597 | /* Check that regs match. */ | |
8598 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
8599 | return FALSE; | |
8600 | ||
8601 | /* P8LS or PMLS form, non-pcrel. */ | |
8602 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
8603 | return FALSE; | |
8604 | ||
8605 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8606 | *pinsn2 = PNOP; | |
8607 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8608 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
8609 | return TRUE; | |
8610 | } | |
8611 | ||
8612 | insn2 >>= 32; | |
8613 | ||
4a421c53 | 8614 | /* Check that regs match. */ |
77486630 | 8615 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
4a421c53 AM |
8616 | return FALSE; |
8617 | ||
8618 | switch ((insn2 >> 26) & 63) | |
8619 | { | |
8620 | default: | |
8621 | return FALSE; | |
8622 | ||
8623 | case 32: /* lwz */ | |
8624 | case 34: /* lbz */ | |
8625 | case 36: /* stw */ | |
8626 | case 38: /* stb */ | |
8627 | case 40: /* lhz */ | |
8628 | case 42: /* lha */ | |
8629 | case 44: /* sth */ | |
8630 | case 48: /* lfs */ | |
8631 | case 50: /* lfd */ | |
8632 | case 52: /* stfs */ | |
8633 | case 54: /* stfd */ | |
8634 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8635 | on the insn. */ |
77486630 | 8636 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8637 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8638 | off = insn2 & 0xffff; |
4a421c53 AM |
8639 | break; |
8640 | ||
8641 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8642 | if ((insn2 & 1) != 0) |
4a421c53 | 8643 | return FALSE; |
77486630 | 8644 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8645 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8646 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8647 | off = insn2 & 0xfffc; |
4a421c53 AM |
8648 | break; |
8649 | ||
8650 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8651 | if ((insn2 & 3) < 2) |
4a421c53 | 8652 | return FALSE; |
77486630 | 8653 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8654 | | ((40ULL | (insn2 & 3)) << 26) |
8655 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8656 | off = insn2 & 0xfffc; |
4a421c53 AM |
8657 | break; |
8658 | ||
8659 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8660 | if ((insn2 & 3) == 0) | |
8661 | return FALSE; | |
8662 | else if ((insn2 & 3) >= 2) | |
8663 | { | |
77486630 | 8664 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8665 | | ((44ULL | (insn2 & 3)) << 26) |
8666 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8667 | off = insn2 & 0xfffc; |
4a421c53 AM |
8668 | } |
8669 | else | |
8670 | { | |
77486630 | 8671 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8672 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8673 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8674 | off = insn2 & 0xfff0; |
4a421c53 AM |
8675 | } |
8676 | break; | |
8677 | ||
8678 | case 56: /* lq */ | |
77486630 | 8679 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8680 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8681 | off = insn2 & 0xffff; |
4a421c53 AM |
8682 | break; |
8683 | ||
94ba9882 AM |
8684 | case 6: /* lxvp, stxvp */ |
8685 | if ((insn2 & 0xe) != 0) | |
8686 | return FALSE; | |
8687 | insn1 = ((1ULL << 58) | (1ULL << 52) | |
8688 | | ((insn2 & 1) == 0 ? 58ULL << 26 : 62ULL << 26) | |
8689 | | (insn2 & (31ULL << 21))); | |
8690 | off = insn2 & 0xfff0; | |
8691 | break; | |
8692 | ||
4a421c53 | 8693 | case 62: /* std, stq */ |
dd9b12c2 | 8694 | if ((insn2 & 1) != 0) |
4a421c53 | 8695 | return FALSE; |
77486630 | 8696 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8697 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8698 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8699 | off = insn2 & 0xfffc; |
4a421c53 AM |
8700 | break; |
8701 | } | |
8702 | ||
77486630 | 8703 | *pinsn1 = insn1; |
4a421c53 | 8704 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8705 | *poff = (off ^ 0x8000) - 0x8000; |
4a421c53 AM |
8706 | return TRUE; |
8707 | } | |
8708 | ||
c5614fa4 AM |
8709 | /* Examine all relocs referencing .toc sections in order to remove |
8710 | unused .toc entries. */ | |
8711 | ||
8712 | bfd_boolean | |
33c0ec9d | 8713 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8714 | { |
8715 | bfd *ibfd; | |
8716 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8717 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8718 | |
67f0cbdb | 8719 | htab->do_toc_opt = 1; |
c5614fa4 | 8720 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8721 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8722 | { |
8723 | asection *toc, *sec; | |
8724 | Elf_Internal_Shdr *symtab_hdr; | |
8725 | Elf_Internal_Sym *local_syms; | |
425b145b | 8726 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8727 | unsigned long *skip, *drop; |
8728 | unsigned char *used; | |
8729 | unsigned char *keep, last, some_unused; | |
8730 | ||
854b41e7 AM |
8731 | if (!is_ppc64_elf (ibfd)) |
8732 | continue; | |
8733 | ||
c5614fa4 AM |
8734 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8735 | if (toc == NULL | |
92b7a70f | 8736 | || toc->size == 0 |
dbaa2011 AM |
8737 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8738 | || discarded_section (toc)) | |
c5614fa4 AM |
8739 | continue; |
8740 | ||
425b145b | 8741 | toc_relocs = NULL; |
c5614fa4 | 8742 | local_syms = NULL; |
0ffa91dd | 8743 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8744 | |
8745 | /* Look at sections dropped from the final link. */ | |
8746 | skip = NULL; | |
8747 | relstart = NULL; | |
8748 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8749 | { | |
8750 | if (sec->reloc_count == 0 | |
dbaa2011 | 8751 | || !discarded_section (sec) |
c5614fa4 AM |
8752 | || get_opd_info (sec) |
8753 | || (sec->flags & SEC_ALLOC) == 0 | |
8754 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8755 | continue; | |
8756 | ||
8757 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8758 | if (relstart == NULL) | |
8759 | goto error_ret; | |
8760 | ||
8761 | /* Run through the relocs to see which toc entries might be | |
8762 | unused. */ | |
8763 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8764 | { | |
8765 | enum elf_ppc64_reloc_type r_type; | |
8766 | unsigned long r_symndx; | |
8767 | asection *sym_sec; | |
8768 | struct elf_link_hash_entry *h; | |
8769 | Elf_Internal_Sym *sym; | |
8770 | bfd_vma val; | |
8771 | ||
8772 | r_type = ELF64_R_TYPE (rel->r_info); | |
8773 | switch (r_type) | |
8774 | { | |
8775 | default: | |
8776 | continue; | |
8777 | ||
8778 | case R_PPC64_TOC16: | |
8779 | case R_PPC64_TOC16_LO: | |
8780 | case R_PPC64_TOC16_HI: | |
8781 | case R_PPC64_TOC16_HA: | |
8782 | case R_PPC64_TOC16_DS: | |
8783 | case R_PPC64_TOC16_LO_DS: | |
8784 | break; | |
8785 | } | |
8786 | ||
8787 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8788 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8789 | r_symndx, ibfd)) | |
8790 | goto error_ret; | |
8791 | ||
8792 | if (sym_sec != toc) | |
8793 | continue; | |
8794 | ||
8795 | if (h != NULL) | |
8796 | val = h->root.u.def.value; | |
8797 | else | |
8798 | val = sym->st_value; | |
8799 | val += rel->r_addend; | |
8800 | ||
8801 | if (val >= toc->size) | |
8802 | continue; | |
8803 | ||
8804 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8805 | If not, don't mark as unused. */ | |
8806 | if (val & 7) | |
8807 | continue; | |
8808 | ||
8809 | if (skip == NULL) | |
8810 | { | |
854b41e7 | 8811 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8812 | if (skip == NULL) |
8813 | goto error_ret; | |
8814 | } | |
8815 | ||
ba761f19 | 8816 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8817 | } |
8818 | ||
8819 | if (elf_section_data (sec)->relocs != relstart) | |
8820 | free (relstart); | |
8821 | } | |
8822 | ||
ba761f19 AM |
8823 | /* For largetoc loads of address constants, we can convert |
8824 | . addis rx,2,addr@got@ha | |
8825 | . ld ry,addr@got@l(rx) | |
8826 | to | |
8827 | . addis rx,2,addr@toc@ha | |
8828 | . addi ry,rx,addr@toc@l | |
8829 | when addr is within 2G of the toc pointer. This then means | |
8830 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8831 | |
ba761f19 AM |
8832 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8833 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8834 | && toc->reloc_count != 0) | |
8835 | { | |
8836 | /* Read toc relocs. */ | |
425b145b AM |
8837 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8838 | info->keep_memory); | |
8839 | if (toc_relocs == NULL) | |
ba761f19 AM |
8840 | goto error_ret; |
8841 | ||
425b145b | 8842 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8843 | { |
8844 | enum elf_ppc64_reloc_type r_type; | |
8845 | unsigned long r_symndx; | |
8846 | asection *sym_sec; | |
8847 | struct elf_link_hash_entry *h; | |
8848 | Elf_Internal_Sym *sym; | |
8849 | bfd_vma val, addr; | |
8850 | ||
8851 | r_type = ELF64_R_TYPE (rel->r_info); | |
8852 | if (r_type != R_PPC64_ADDR64) | |
8853 | continue; | |
8854 | ||
8855 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8856 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8857 | r_symndx, ibfd)) | |
8858 | goto error_ret; | |
8859 | ||
425b145b | 8860 | if (sym_sec == NULL |
c27b8c2a | 8861 | || sym_sec->output_section == NULL |
dbaa2011 | 8862 | || discarded_section (sym_sec)) |
425b145b AM |
8863 | continue; |
8864 | ||
afe397ea | 8865 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8866 | continue; |
8867 | ||
8868 | if (h != NULL) | |
bddc25c9 AM |
8869 | { |
8870 | if (h->type == STT_GNU_IFUNC) | |
8871 | continue; | |
8872 | val = h->root.u.def.value; | |
8873 | } | |
ba761f19 | 8874 | else |
bddc25c9 AM |
8875 | { |
8876 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8877 | continue; | |
8878 | val = sym->st_value; | |
8879 | } | |
ba761f19 AM |
8880 | val += rel->r_addend; |
8881 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8882 | ||
8883 | /* We don't yet know the exact toc pointer value, but we | |
8884 | know it will be somewhere in the toc section. Don't | |
8885 | optimize if the difference from any possible toc | |
8886 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8887 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8888 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8889 | continue; | |
8890 | ||
8891 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8892 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8893 | continue; | |
8894 | ||
8895 | if (skip == NULL) | |
8896 | { | |
8897 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8898 | if (skip == NULL) | |
8899 | goto error_ret; | |
8900 | } | |
8901 | ||
8902 | skip[rel->r_offset >> 3] | |
425b145b | 8903 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8904 | } |
ba761f19 AM |
8905 | } |
8906 | ||
c5614fa4 AM |
8907 | if (skip == NULL) |
8908 | continue; | |
8909 | ||
8910 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8911 | if (used == NULL) | |
8912 | { | |
8913 | error_ret: | |
c9594989 | 8914 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
c5614fa4 AM |
8915 | free (local_syms); |
8916 | if (sec != NULL | |
c5614fa4 AM |
8917 | && elf_section_data (sec)->relocs != relstart) |
8918 | free (relstart); | |
c9594989 | 8919 | if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 8920 | free (toc_relocs); |
c9594989 | 8921 | free (skip); |
c5614fa4 AM |
8922 | return FALSE; |
8923 | } | |
8924 | ||
30038c59 AM |
8925 | /* Now check all kept sections that might reference the toc. |
8926 | Check the toc itself last. */ | |
8927 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8928 | : ibfd->sections); | |
c5614fa4 | 8929 | sec != NULL; |
c5614fa4 | 8930 | sec = (sec == toc ? NULL |
c5614fa4 | 8931 | : sec->next == NULL ? toc |
30038c59 | 8932 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8933 | : sec->next)) |
8934 | { | |
8935 | int repeat; | |
8936 | ||
8937 | if (sec->reloc_count == 0 | |
dbaa2011 | 8938 | || discarded_section (sec) |
c5614fa4 AM |
8939 | || get_opd_info (sec) |
8940 | || (sec->flags & SEC_ALLOC) == 0 | |
8941 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8942 | continue; | |
8943 | ||
854b41e7 AM |
8944 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8945 | info->keep_memory); | |
c5614fa4 | 8946 | if (relstart == NULL) |
2915c55b JK |
8947 | { |
8948 | free (used); | |
8949 | goto error_ret; | |
8950 | } | |
c5614fa4 AM |
8951 | |
8952 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8953 | do |
d4f1ee75 AM |
8954 | { |
8955 | repeat = 0; | |
8956 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8957 | { | |
8958 | enum elf_ppc64_reloc_type r_type; | |
8959 | unsigned long r_symndx; | |
8960 | asection *sym_sec; | |
8961 | struct elf_link_hash_entry *h; | |
8962 | Elf_Internal_Sym *sym; | |
8963 | bfd_vma val; | |
98528052 | 8964 | |
d4f1ee75 | 8965 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
8966 | switch (r_type) |
8967 | { | |
8968 | case R_PPC64_TOC16: | |
8969 | case R_PPC64_TOC16_LO: | |
8970 | case R_PPC64_TOC16_HI: | |
8971 | case R_PPC64_TOC16_HA: | |
8972 | case R_PPC64_TOC16_DS: | |
8973 | case R_PPC64_TOC16_LO_DS: | |
8974 | /* In case we're taking addresses of toc entries. */ | |
8975 | case R_PPC64_ADDR64: | |
8976 | break; | |
c5614fa4 | 8977 | |
d4f1ee75 AM |
8978 | default: |
8979 | continue; | |
8980 | } | |
c5614fa4 | 8981 | |
d4f1ee75 AM |
8982 | r_symndx = ELF64_R_SYM (rel->r_info); |
8983 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8984 | r_symndx, ibfd)) | |
8985 | { | |
8986 | free (used); | |
8987 | goto error_ret; | |
8988 | } | |
c5614fa4 | 8989 | |
d4f1ee75 AM |
8990 | if (sym_sec != toc) |
8991 | continue; | |
c5614fa4 | 8992 | |
d4f1ee75 AM |
8993 | if (h != NULL) |
8994 | val = h->root.u.def.value; | |
8995 | else | |
8996 | val = sym->st_value; | |
8997 | val += rel->r_addend; | |
ba761f19 | 8998 | |
d4f1ee75 AM |
8999 | if (val >= toc->size) |
9000 | continue; | |
ba761f19 | 9001 | |
d4f1ee75 AM |
9002 | if ((skip[val >> 3] & can_optimize) != 0) |
9003 | { | |
9004 | bfd_vma off; | |
9005 | unsigned char opc; | |
9006 | ||
9007 | switch (r_type) | |
9008 | { | |
9009 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9010 | break; |
ba761f19 | 9011 | |
d4f1ee75 AM |
9012 | case R_PPC64_TOC16_LO_DS: |
9013 | off = rel->r_offset; | |
9014 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9015 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9016 | off, 1)) | |
9017 | { | |
9018 | free (used); | |
9019 | goto error_ret; | |
9020 | } | |
9021 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9022 | break; | |
1a0670f3 | 9023 | /* Fall through. */ |
ba761f19 | 9024 | |
d4f1ee75 AM |
9025 | default: |
9026 | /* Wrong sort of reloc, or not a ld. We may | |
9027 | as well clear ref_from_discarded too. */ | |
9028 | skip[val >> 3] = 0; | |
9029 | } | |
9030 | } | |
9031 | ||
9032 | if (sec != toc) | |
9033 | used[val >> 3] = 1; | |
9034 | /* For the toc section, we only mark as used if this | |
9035 | entry itself isn't unused. */ | |
9036 | else if ((used[rel->r_offset >> 3] | |
9037 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9038 | && !used[val >> 3]) | |
9039 | { | |
9040 | /* Do all the relocs again, to catch reference | |
9041 | chains. */ | |
9042 | repeat = 1; | |
9043 | used[val >> 3] = 1; | |
9044 | } | |
9045 | } | |
9046 | } | |
c5614fa4 | 9047 | while (repeat); |
854b41e7 AM |
9048 | |
9049 | if (elf_section_data (sec)->relocs != relstart) | |
9050 | free (relstart); | |
c5614fa4 AM |
9051 | } |
9052 | ||
9053 | /* Merge the used and skip arrays. Assume that TOC | |
9054 | doublewords not appearing as either used or unused belong | |
de194d85 | 9055 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9056 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9057 | drop < skip + (toc->size + 7) / 8; | |
9058 | ++drop, ++keep) | |
9059 | { | |
9060 | if (*keep) | |
9061 | { | |
ba761f19 AM |
9062 | *drop &= ~ref_from_discarded; |
9063 | if ((*drop & can_optimize) != 0) | |
9064 | some_unused = 1; | |
c5614fa4 AM |
9065 | last = 0; |
9066 | } | |
b140b010 | 9067 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9068 | { |
9069 | some_unused = 1; | |
ba761f19 | 9070 | last = ref_from_discarded; |
c5614fa4 AM |
9071 | } |
9072 | else | |
9073 | *drop = last; | |
9074 | } | |
9075 | ||
9076 | free (used); | |
9077 | ||
9078 | if (some_unused) | |
9079 | { | |
9080 | bfd_byte *contents, *src; | |
9081 | unsigned long off; | |
d62b3684 | 9082 | Elf_Internal_Sym *sym; |
ba761f19 | 9083 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9084 | |
9085 | /* Shuffle the toc contents, and at the same time convert the | |
9086 | skip array from booleans into offsets. */ | |
9087 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9088 | goto error_ret; | |
9089 | ||
9090 | elf_section_data (toc)->this_hdr.contents = contents; | |
9091 | ||
9092 | for (src = contents, off = 0, drop = skip; | |
9093 | src < contents + toc->size; | |
9094 | src += 8, ++drop) | |
9095 | { | |
ba761f19 AM |
9096 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9097 | off += 8; | |
c5614fa4 AM |
9098 | else if (off != 0) |
9099 | { | |
9100 | *drop = off; | |
9101 | memcpy (src - off, src, 8); | |
9102 | } | |
9103 | } | |
854b41e7 | 9104 | *drop = off; |
c5614fa4 AM |
9105 | toc->rawsize = toc->size; |
9106 | toc->size = src - contents - off; | |
9107 | ||
ba761f19 AM |
9108 | /* Adjust addends for relocs against the toc section sym, |
9109 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9110 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9111 | { | |
9112 | if (sec->reloc_count == 0 | |
dbaa2011 | 9113 | || discarded_section (sec)) |
c5614fa4 AM |
9114 | continue; |
9115 | ||
9116 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9117 | info->keep_memory); |
c5614fa4 AM |
9118 | if (relstart == NULL) |
9119 | goto error_ret; | |
9120 | ||
9121 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9122 | { | |
9123 | enum elf_ppc64_reloc_type r_type; | |
9124 | unsigned long r_symndx; | |
9125 | asection *sym_sec; | |
9126 | struct elf_link_hash_entry *h; | |
854b41e7 | 9127 | bfd_vma val; |
c5614fa4 AM |
9128 | |
9129 | r_type = ELF64_R_TYPE (rel->r_info); | |
9130 | switch (r_type) | |
9131 | { | |
9132 | default: | |
9133 | continue; | |
9134 | ||
9135 | case R_PPC64_TOC16: | |
9136 | case R_PPC64_TOC16_LO: | |
9137 | case R_PPC64_TOC16_HI: | |
9138 | case R_PPC64_TOC16_HA: | |
9139 | case R_PPC64_TOC16_DS: | |
9140 | case R_PPC64_TOC16_LO_DS: | |
9141 | case R_PPC64_ADDR64: | |
9142 | break; | |
9143 | } | |
9144 | ||
9145 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9146 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9147 | r_symndx, ibfd)) | |
9148 | goto error_ret; | |
9149 | ||
ba761f19 | 9150 | if (sym_sec != toc) |
c5614fa4 AM |
9151 | continue; |
9152 | ||
ba761f19 AM |
9153 | if (h != NULL) |
9154 | val = h->root.u.def.value; | |
9155 | else | |
9156 | { | |
9157 | val = sym->st_value; | |
9158 | if (val != 0) | |
9159 | local_toc_syms = TRUE; | |
9160 | } | |
9161 | ||
9162 | val += rel->r_addend; | |
854b41e7 AM |
9163 | |
9164 | if (val > toc->rawsize) | |
9165 | val = toc->rawsize; | |
ba761f19 AM |
9166 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9167 | continue; | |
9168 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9169 | { | |
9170 | Elf_Internal_Rela *tocrel | |
425b145b | 9171 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9172 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9173 | ||
9174 | switch (r_type) | |
9175 | { | |
9176 | case R_PPC64_TOC16_HA: | |
9177 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9178 | break; | |
9179 | ||
9180 | case R_PPC64_TOC16_LO_DS: | |
9181 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9182 | break; | |
9183 | ||
9184 | default: | |
28942f62 AM |
9185 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9186 | ppc_howto_init (); | |
b140b010 | 9187 | info->callbacks->einfo |
695344c0 | 9188 | /* xgettext:c-format */ |
174d0a74 | 9189 | (_("%H: %s references " |
b140b010 AM |
9190 | "optimized away TOC entry\n"), |
9191 | ibfd, sec, rel->r_offset, | |
9192 | ppc64_elf_howto_table[r_type]->name); | |
9193 | bfd_set_error (bfd_error_bad_value); | |
9194 | goto error_ret; | |
ba761f19 AM |
9195 | } |
9196 | rel->r_addend = tocrel->r_addend; | |
9197 | elf_section_data (sec)->relocs = relstart; | |
9198 | continue; | |
9199 | } | |
9200 | ||
9201 | if (h != NULL || sym->st_value != 0) | |
9202 | continue; | |
854b41e7 AM |
9203 | |
9204 | rel->r_addend -= skip[val >> 3]; | |
9205 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9206 | } |
854b41e7 AM |
9207 | |
9208 | if (elf_section_data (sec)->relocs != relstart) | |
9209 | free (relstart); | |
c5614fa4 AM |
9210 | } |
9211 | ||
9212 | /* We shouldn't have local or global symbols defined in the TOC, | |
9213 | but handle them anyway. */ | |
df22d223 AM |
9214 | if (local_syms != NULL) |
9215 | for (sym = local_syms; | |
9216 | sym < local_syms + symtab_hdr->sh_info; | |
9217 | ++sym) | |
9218 | if (sym->st_value != 0 | |
9219 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9220 | { | |
9221 | unsigned long i; | |
854b41e7 | 9222 | |
df22d223 AM |
9223 | if (sym->st_value > toc->rawsize) |
9224 | i = toc->rawsize >> 3; | |
9225 | else | |
9226 | i = sym->st_value >> 3; | |
854b41e7 | 9227 | |
df22d223 AM |
9228 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9229 | { | |
9230 | if (local_toc_syms) | |
4eca0228 | 9231 | _bfd_error_handler |
df22d223 AM |
9232 | (_("%s defined on removed toc entry"), |
9233 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9234 | do | |
9235 | ++i; | |
9236 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9237 | sym->st_value = (bfd_vma) i << 3; | |
9238 | } | |
d62b3684 | 9239 | |
df22d223 AM |
9240 | sym->st_value -= skip[i]; |
9241 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9242 | } | |
c5614fa4 | 9243 | |
854b41e7 | 9244 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9245 | if (toc_inf.global_toc_syms) |
9246 | { | |
9247 | toc_inf.toc = toc; | |
9248 | toc_inf.skip = skip; | |
9249 | toc_inf.global_toc_syms = FALSE; | |
9250 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9251 | &toc_inf); | |
9252 | } | |
854b41e7 AM |
9253 | |
9254 | if (toc->reloc_count != 0) | |
9255 | { | |
d4730f92 | 9256 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9257 | Elf_Internal_Rela *wrel; |
9258 | bfd_size_type sz; | |
9259 | ||
854b41e7 | 9260 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9261 | if (toc_relocs == NULL) |
9262 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9263 | info->keep_memory); | |
9264 | if (toc_relocs == NULL) | |
9265 | goto error_ret; | |
9266 | ||
425b145b AM |
9267 | wrel = toc_relocs; |
9268 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9269 | if ((skip[rel->r_offset >> 3] |
9270 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9271 | { |
9272 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9273 | wrel->r_info = rel->r_info; | |
9274 | wrel->r_addend = rel->r_addend; | |
9275 | ++wrel; | |
9276 | } | |
9277 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9278 | &local_syms, NULL, NULL)) | |
9279 | goto error_ret; | |
9280 | ||
425b145b AM |
9281 | elf_section_data (toc)->relocs = toc_relocs; |
9282 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9283 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9284 | sz = rel_hdr->sh_entsize; | |
9285 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9286 | } |
c5614fa4 | 9287 | } |
c9594989 | 9288 | else if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9289 | free (toc_relocs); |
c5614fa4 AM |
9290 | |
9291 | if (local_syms != NULL | |
9292 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9293 | { | |
9294 | if (!info->keep_memory) | |
9295 | free (local_syms); | |
9296 | else | |
9297 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9298 | } | |
9299 | free (skip); | |
9300 | } | |
9301 | ||
066f4018 | 9302 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9303 | a GOT relative or PC relative access, possibly reducing the |
9304 | number of GOT entries. */ | |
066f4018 AM |
9305 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9306 | { | |
9307 | asection *sec; | |
9308 | Elf_Internal_Shdr *symtab_hdr; | |
9309 | Elf_Internal_Sym *local_syms; | |
9310 | Elf_Internal_Rela *relstart, *rel; | |
9311 | bfd_vma got; | |
9312 | ||
9313 | if (!is_ppc64_elf (ibfd)) | |
9314 | continue; | |
9315 | ||
903b777d | 9316 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9317 | continue; |
9318 | ||
9319 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9320 | got = 0; |
9321 | if (sec != NULL) | |
9322 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9323 | |
9324 | local_syms = NULL; | |
9325 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9326 | ||
9327 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9328 | { | |
9329 | if (sec->reloc_count == 0 | |
903b777d | 9330 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9331 | || discarded_section (sec)) |
9332 | continue; | |
9333 | ||
9334 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9335 | info->keep_memory); | |
9336 | if (relstart == NULL) | |
9337 | { | |
9338 | got_error_ret: | |
c9594989 | 9339 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
066f4018 AM |
9340 | free (local_syms); |
9341 | if (sec != NULL | |
066f4018 AM |
9342 | && elf_section_data (sec)->relocs != relstart) |
9343 | free (relstart); | |
9344 | return FALSE; | |
9345 | } | |
9346 | ||
9347 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9348 | { | |
9349 | enum elf_ppc64_reloc_type r_type; | |
9350 | unsigned long r_symndx; | |
9351 | Elf_Internal_Sym *sym; | |
9352 | asection *sym_sec; | |
9353 | struct elf_link_hash_entry *h; | |
9354 | struct got_entry *ent; | |
133a1f60 | 9355 | bfd_vma val, pc; |
4a421c53 | 9356 | unsigned char buf[8]; |
066f4018 | 9357 | unsigned int insn; |
903b777d | 9358 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9359 | |
9360 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9361 | switch (r_type) |
9362 | { | |
9363 | default: | |
9364 | insn_check = no_check; | |
9365 | break; | |
9366 | ||
9367 | case R_PPC64_PLT16_HA: | |
9368 | case R_PPC64_GOT_TLSLD16_HA: | |
9369 | case R_PPC64_GOT_TLSGD16_HA: | |
9370 | case R_PPC64_GOT_TPREL16_HA: | |
9371 | case R_PPC64_GOT_DTPREL16_HA: | |
9372 | case R_PPC64_GOT16_HA: | |
9373 | case R_PPC64_TOC16_HA: | |
9374 | insn_check = check_ha; | |
9375 | break; | |
9376 | ||
9377 | case R_PPC64_PLT16_LO: | |
9378 | case R_PPC64_PLT16_LO_DS: | |
9379 | case R_PPC64_GOT_TLSLD16_LO: | |
9380 | case R_PPC64_GOT_TLSGD16_LO: | |
9381 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9382 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9383 | case R_PPC64_GOT16_LO: | |
9384 | case R_PPC64_GOT16_LO_DS: | |
9385 | case R_PPC64_TOC16_LO: | |
9386 | case R_PPC64_TOC16_LO_DS: | |
9387 | insn_check = check_lo; | |
9388 | break; | |
9389 | } | |
9390 | ||
9391 | if (insn_check != no_check) | |
9392 | { | |
9393 | bfd_vma off = rel->r_offset & ~3; | |
9394 | ||
9395 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9396 | goto got_error_ret; | |
9397 | ||
9398 | insn = bfd_get_32 (ibfd, buf); | |
9399 | if (insn_check == check_lo | |
9400 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9401 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9402 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9403 | { | |
9404 | char str[12]; | |
9405 | ||
9406 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9407 | sprintf (str, "%#08x", insn); | |
9408 | info->callbacks->einfo | |
9409 | /* xgettext:c-format */ | |
9410 | (_("%H: got/toc optimization is not supported for" | |
9411 | " %s instruction\n"), | |
9412 | ibfd, sec, rel->r_offset & ~3, str); | |
9413 | continue; | |
9414 | } | |
9415 | } | |
9416 | ||
066f4018 AM |
9417 | switch (r_type) |
9418 | { | |
bb22a418 AM |
9419 | /* Note that we don't delete GOT entries for |
9420 | R_PPC64_GOT16_DS since we'd need a lot more | |
9421 | analysis. For starters, the preliminary layout is | |
9422 | before the GOT, PLT, dynamic sections and stubs are | |
9423 | laid out. Then we'd need to allow for changes in | |
9424 | distance between sections caused by alignment. */ | |
066f4018 AM |
9425 | default: |
9426 | continue; | |
9427 | ||
066f4018 AM |
9428 | case R_PPC64_GOT16_HA: |
9429 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9430 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9431 | break; |
9432 | } | |
9433 | ||
9434 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9435 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9436 | r_symndx, ibfd)) | |
9437 | goto got_error_ret; | |
9438 | ||
6d5554a6 AM |
9439 | if (sym_sec == NULL |
9440 | || sym_sec->output_section == NULL | |
9441 | || discarded_section (sym_sec)) | |
9442 | continue; | |
9443 | ||
06507dab AM |
9444 | if ((h ? h->type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
9445 | continue; | |
9446 | ||
066f4018 AM |
9447 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
9448 | continue; | |
9449 | ||
9450 | if (h != NULL) | |
9451 | val = h->root.u.def.value; | |
9452 | else | |
9453 | val = sym->st_value; | |
133a1f60 | 9454 | val += rel->r_addend; |
066f4018 AM |
9455 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9456 | ||
bb22a418 AM |
9457 | /* Fudge factor to allow for the fact that the preliminary layout |
9458 | isn't exact. Reduce limits by this factor. */ | |
9459 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9460 | ||
066f4018 AM |
9461 | switch (r_type) |
9462 | { | |
9463 | default: | |
9464 | continue; | |
9465 | ||
066f4018 | 9466 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9467 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9468 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9469 | continue; |
9470 | ||
9471 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9472 | rel->r_offset & ~3, 4)) | |
9473 | goto got_error_ret; | |
9474 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9475 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9476 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9477 | continue; | |
9478 | break; | |
9479 | ||
9480 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9481 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9482 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9483 | continue; |
9484 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9485 | rel->r_offset & ~3, 4)) | |
9486 | goto got_error_ret; | |
9487 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9488 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9489 | continue; |
9490 | break; | |
4a421c53 AM |
9491 | |
9492 | case R_PPC64_GOT_PCREL34: | |
9493 | pc = rel->r_offset; | |
9494 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9495 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9496 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9497 | continue; |
9498 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9499 | rel->r_offset & ~3, 8)) | |
9500 | goto got_error_ret; | |
9501 | insn = bfd_get_32 (ibfd, buf); | |
9502 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9503 | continue; | |
9504 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9505 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9506 | continue; |
9507 | break; | |
066f4018 | 9508 | } |
bb22a418 | 9509 | #undef LIMIT_ADJUST |
066f4018 AM |
9510 | |
9511 | if (h != NULL) | |
9512 | ent = h->got.glist; | |
9513 | else | |
9514 | { | |
9515 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9516 | ent = local_got_ents[r_symndx]; | |
9517 | } | |
9518 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9519 | if (ent->addend == rel->r_addend |
066f4018 AM |
9520 | && ent->owner == ibfd |
9521 | && ent->tls_type == 0) | |
9522 | break; | |
9523 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9524 | ent->got.refcount -= 1; | |
9525 | } | |
9526 | ||
9527 | if (elf_section_data (sec)->relocs != relstart) | |
9528 | free (relstart); | |
9529 | } | |
9530 | ||
9531 | if (local_syms != NULL | |
9532 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9533 | { | |
9534 | if (!info->keep_memory) | |
9535 | free (local_syms); | |
9536 | else | |
9537 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9538 | } | |
9539 | } | |
9540 | ||
c5614fa4 AM |
9541 | return TRUE; |
9542 | } | |
9543 | ||
1bbe0902 AM |
9544 | /* Return true iff input section I references the TOC using |
9545 | instructions limited to +/-32k offsets. */ | |
9546 | ||
9547 | bfd_boolean | |
9548 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9549 | { | |
9550 | return (is_ppc64_elf (i->owner) | |
9551 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9552 | } | |
9553 | ||
927be08e AM |
9554 | /* Allocate space for one GOT entry. */ |
9555 | ||
9556 | static void | |
9557 | allocate_got (struct elf_link_hash_entry *h, | |
9558 | struct bfd_link_info *info, | |
9559 | struct got_entry *gent) | |
9560 | { | |
9561 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ed7007c1 | 9562 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
927be08e AM |
9563 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) |
9564 | ? 16 : 8); | |
9565 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9566 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9567 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9568 | ||
9569 | gent->got.offset = got->size; | |
9570 | got->size += entsize; | |
9571 | ||
19e08130 | 9572 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9573 | { |
33e44f2e | 9574 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9575 | htab->got_reli_size += rentsize; |
927be08e | 9576 | } |
f15d0b54 | 9577 | else if (((bfd_link_pic (info) |
f749f26e | 9578 | && !(gent->tls_type != 0 |
f15d0b54 AM |
9579 | && bfd_link_executable (info) |
9580 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9581 | || (htab->elf.dynamic_sections_created |
9582 | && h->dynindx != -1 | |
9583 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9584 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9585 | { |
19e08130 | 9586 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9587 | relgot->size += rentsize; |
927be08e AM |
9588 | } |
9589 | } | |
9590 | ||
7865406b AM |
9591 | /* This function merges got entries in the same toc group. */ |
9592 | ||
9593 | static void | |
9594 | merge_got_entries (struct got_entry **pent) | |
9595 | { | |
9596 | struct got_entry *ent, *ent2; | |
9597 | ||
9598 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9599 | if (!ent->is_indirect) | |
9600 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9601 | if (!ent2->is_indirect | |
9602 | && ent2->addend == ent->addend | |
9603 | && ent2->tls_type == ent->tls_type | |
9604 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9605 | { | |
9606 | ent2->is_indirect = TRUE; | |
9607 | ent2->got.ent = ent; | |
9608 | } | |
9609 | } | |
9610 | ||
46434633 | 9611 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9612 | |
9613 | static bfd_boolean | |
46434633 AM |
9614 | ensure_undef_dynamic (struct bfd_link_info *info, |
9615 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9616 | { |
9617 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9618 | ||
9619 | if (htab->dynamic_sections_created | |
46434633 AM |
9620 | && ((info->dynamic_undefined_weak != 0 |
9621 | && h->root.type == bfd_link_hash_undefweak) | |
9622 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9623 | && h->dynindx == -1 |
9624 | && !h->forced_local | |
9625 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9626 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9627 | return TRUE; | |
9628 | } | |
9629 | ||
65f38f15 AM |
9630 | /* Allocate space in .plt, .got and associated reloc sections for |
9631 | dynamic relocs. */ | |
5bd4f169 | 9632 | |
b34976b6 | 9633 | static bfd_boolean |
4ce794b7 | 9634 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9635 | { |
65f38f15 AM |
9636 | struct bfd_link_info *info; |
9637 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9638 | asection *s; |
65f38f15 | 9639 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9640 | struct got_entry **pgent, *gent; |
5bd4f169 | 9641 | |
e92d460e | 9642 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9643 | return TRUE; |
5bd4f169 | 9644 | |
65f38f15 AM |
9645 | info = (struct bfd_link_info *) inf; |
9646 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9647 | if (htab == NULL) |
9648 | return FALSE; | |
5bd4f169 | 9649 | |
ed7007c1 | 9650 | eh = ppc_elf_hash_entry (h); |
951fd09b AM |
9651 | /* Run through the TLS GD got entries first if we're changing them |
9652 | to TPREL. */ | |
b00a0a86 | 9653 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9654 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9655 | if (gent->got.refcount > 0 | |
9656 | && (gent->tls_type & TLS_GD) != 0) | |
9657 | { | |
9658 | /* This was a GD entry that has been converted to TPREL. If | |
9659 | there happens to be a TPREL entry we can use that one. */ | |
9660 | struct got_entry *ent; | |
9661 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9662 | if (ent->got.refcount > 0 | |
9663 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9664 | && ent->addend == gent->addend |
9665 | && ent->owner == gent->owner) | |
951fd09b AM |
9666 | { |
9667 | gent->got.refcount = 0; | |
9668 | break; | |
9669 | } | |
9670 | ||
9671 | /* If not, then we'll be using our own TPREL entry. */ | |
9672 | if (gent->got.refcount != 0) | |
9673 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9674 | } | |
9675 | ||
7865406b AM |
9676 | /* Remove any list entry that won't generate a word in the GOT before |
9677 | we call merge_got_entries. Otherwise we risk merging to empty | |
9678 | entries. */ | |
0b8bcf0d AM |
9679 | pgent = &h->got.glist; |
9680 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9681 | if (gent->got.refcount > 0) |
7865406b AM |
9682 | { |
9683 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9684 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9685 | { |
9686 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9687 | *pgent = gent->next; | |
9688 | } | |
9689 | else | |
9690 | pgent = &gent->next; | |
9691 | } | |
9692 | else | |
9693 | *pgent = gent->next; | |
9694 | ||
9695 | if (!htab->do_multi_toc) | |
9696 | merge_got_entries (&h->got.glist); | |
9697 | ||
9698 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9699 | if (!gent->is_indirect) | |
411e1bfb | 9700 | { |
ec73ddcd AM |
9701 | /* Ensure we catch all the cases where this symbol should |
9702 | be made dynamic. */ | |
46434633 | 9703 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9704 | return FALSE; |
65f38f15 | 9705 | |
0c8d6e5c | 9706 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9707 | abort (); |
0ffa91dd | 9708 | |
927be08e | 9709 | allocate_got (h, info, gent); |
411e1bfb | 9710 | } |
65f38f15 | 9711 | |
954b63d4 AM |
9712 | /* If no dynamic sections we can't have dynamic relocs, except for |
9713 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9714 | if (!htab->elf.dynamic_sections_created |
9715 | && h->type != STT_GNU_IFUNC) | |
190eb1dd | 9716 | h->dyn_relocs = NULL; |
8a2058b5 | 9717 | |
529fe20e AM |
9718 | /* Discard relocs on undefined symbols that must be local. */ |
9719 | else if (h->root.type == bfd_link_hash_undefined | |
9720 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
190eb1dd | 9721 | h->dyn_relocs = NULL; |
529fe20e | 9722 | |
954b63d4 AM |
9723 | /* Also discard relocs on undefined weak syms with non-default |
9724 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9725 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 9726 | h->dyn_relocs = NULL; |
954b63d4 | 9727 | |
190eb1dd | 9728 | if (h->dyn_relocs != NULL) |
65f38f15 | 9729 | { |
8a2058b5 AM |
9730 | struct elf_dyn_relocs *p, **pp; |
9731 | ||
57e7d118 AM |
9732 | /* In the shared -Bsymbolic case, discard space allocated for |
9733 | dynamic pc-relative relocs against symbols which turn out to | |
9734 | be defined in regular objects. For the normal shared case, | |
9735 | discard space for relocs that have become local due to symbol | |
9736 | visibility changes. */ | |
57e7d118 | 9737 | if (bfd_link_pic (info)) |
65f38f15 | 9738 | { |
57e7d118 AM |
9739 | /* Relocs that use pc_count are those that appear on a call |
9740 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9741 | can be generated via assembly. We want calls to | |
9742 | protected symbols to resolve directly to the function | |
9743 | rather than going via the plt. If people want function | |
9744 | pointer comparisons to work as expected then they should | |
9745 | avoid writing weird assembly. */ | |
9746 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9747 | { | |
190eb1dd | 9748 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
57e7d118 AM |
9749 | { |
9750 | p->count -= p->pc_count; | |
9751 | p->pc_count = 0; | |
9752 | if (p->count == 0) | |
9753 | *pp = p->next; | |
9754 | else | |
9755 | pp = &p->next; | |
9756 | } | |
9757 | } | |
65f38f15 | 9758 | |
190eb1dd | 9759 | if (h->dyn_relocs != NULL) |
5bd4f169 | 9760 | { |
ec73ddcd AM |
9761 | /* Ensure we catch all the cases where this symbol |
9762 | should be made dynamic. */ | |
46434633 | 9763 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9764 | return FALSE; |
5bd4f169 | 9765 | } |
65f38f15 | 9766 | } |
ec73ddcd AM |
9767 | |
9768 | /* For a fixed position executable, discard space for | |
9769 | relocs against symbols which are not dynamic. */ | |
9770 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9771 | { |
529fe20e AM |
9772 | if (h->dynamic_adjusted |
9773 | && !h->def_regular | |
9774 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9775 | { |
ec73ddcd AM |
9776 | /* Ensure we catch all the cases where this symbol |
9777 | should be made dynamic. */ | |
46434633 | 9778 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9779 | return FALSE; |
dfbb6ac9 | 9780 | |
ec73ddcd | 9781 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 | 9782 | if (h->dynindx == -1) |
190eb1dd | 9783 | h->dyn_relocs = NULL; |
f0158f44 AM |
9784 | } |
9785 | else | |
190eb1dd | 9786 | h->dyn_relocs = NULL; |
57e7d118 AM |
9787 | } |
9788 | ||
9789 | /* Finally, allocate space. */ | |
190eb1dd | 9790 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
57e7d118 AM |
9791 | { |
9792 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9793 | if (eh->elf.type == STT_GNU_IFUNC) | |
9794 | sreloc = htab->elf.irelplt; | |
9795 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9796 | } |
65f38f15 | 9797 | } |
57e7d118 | 9798 | |
2d7ad24e AM |
9799 | /* We might need a PLT entry when the symbol |
9800 | a) is dynamic, or | |
9801 | b) is an ifunc, or | |
9802 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9803 | d) has plt16 relocs and we are linking statically. */ | |
9804 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9805 | || h->type == STT_GNU_IFUNC | |
9806 | || (h->needs_plt && h->dynamic_adjusted) | |
9807 | || (h->needs_plt | |
9808 | && h->def_regular | |
9809 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9810 | && !htab->can_convert_all_inline_plt |
ed7007c1 | 9811 | && (ppc_elf_hash_entry (h)->tls_mask |
2d7ad24e | 9812 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) |
65f38f15 | 9813 | { |
57e7d118 AM |
9814 | struct plt_entry *pent; |
9815 | bfd_boolean doneone = FALSE; | |
9816 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9817 | if (pent->plt.refcount > 0) | |
9818 | { | |
9819 | if (!htab->elf.dynamic_sections_created | |
9820 | || h->dynindx == -1) | |
9821 | { | |
2d7ad24e AM |
9822 | if (h->type == STT_GNU_IFUNC) |
9823 | { | |
9824 | s = htab->elf.iplt; | |
9825 | pent->plt.offset = s->size; | |
9826 | s->size += PLT_ENTRY_SIZE (htab); | |
9827 | s = htab->elf.irelplt; | |
9828 | } | |
9829 | else | |
9830 | { | |
9831 | s = htab->pltlocal; | |
9832 | pent->plt.offset = s->size; | |
9833 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9834 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9835 | } | |
57e7d118 AM |
9836 | } |
9837 | else | |
9838 | { | |
9839 | /* If this is the first .plt entry, make room for the special | |
9840 | first entry. */ | |
9841 | s = htab->elf.splt; | |
9842 | if (s->size == 0) | |
9843 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9844 | |
57e7d118 | 9845 | pent->plt.offset = s->size; |
65f38f15 | 9846 | |
57e7d118 AM |
9847 | /* Make room for this entry. */ |
9848 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9849 | |
57e7d118 AM |
9850 | /* Make room for the .glink code. */ |
9851 | s = htab->glink; | |
9852 | if (s->size == 0) | |
9e390558 | 9853 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9854 | if (htab->opd_abi) |
9855 | { | |
9856 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9857 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9858 | s->size += 4; |
9859 | s->size += 2*4; | |
9860 | } | |
9861 | else | |
9862 | s->size += 4; | |
65f38f15 | 9863 | |
57e7d118 AM |
9864 | /* We also need to make an entry in the .rela.plt section. */ |
9865 | s = htab->elf.srelplt; | |
9866 | } | |
2d7ad24e AM |
9867 | if (s != NULL) |
9868 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9869 | doneone = TRUE; |
9870 | } | |
9871 | else | |
9872 | pent->plt.offset = (bfd_vma) -1; | |
9873 | if (!doneone) | |
9874 | { | |
9875 | h->plt.plist = NULL; | |
9876 | h->needs_plt = 0; | |
9877 | } | |
65f38f15 | 9878 | } |
57e7d118 | 9879 | else |
65f38f15 | 9880 | { |
57e7d118 AM |
9881 | h->plt.plist = NULL; |
9882 | h->needs_plt = 0; | |
65f38f15 AM |
9883 | } |
9884 | ||
b34976b6 | 9885 | return TRUE; |
65f38f15 AM |
9886 | } |
9887 | ||
9e390558 AM |
9888 | #define PPC_LO(v) ((v) & 0xffff) |
9889 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9890 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9891 | #define D34(v) \ |
9892 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9893 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9894 | |
a345bc8d AM |
9895 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9896 | to set up space for global entry stubs. These are put in glink, | |
9897 | after the branch table. */ | |
65f38f15 | 9898 | |
b34976b6 | 9899 | static bfd_boolean |
a345bc8d | 9900 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9901 | { |
a345bc8d AM |
9902 | struct bfd_link_info *info; |
9903 | struct ppc_link_hash_table *htab; | |
9904 | struct plt_entry *pent; | |
9e390558 | 9905 | asection *s, *plt; |
65f38f15 | 9906 | |
a345bc8d AM |
9907 | if (h->root.type == bfd_link_hash_indirect) |
9908 | return TRUE; | |
65f38f15 | 9909 | |
a345bc8d AM |
9910 | if (!h->pointer_equality_needed) |
9911 | return TRUE; | |
65f38f15 | 9912 | |
a345bc8d AM |
9913 | if (h->def_regular) |
9914 | return TRUE; | |
65f38f15 | 9915 | |
a345bc8d AM |
9916 | info = inf; |
9917 | htab = ppc_hash_table (info); | |
9918 | if (htab == NULL) | |
9919 | return FALSE; | |
9920 | ||
9e390558 AM |
9921 | s = htab->global_entry; |
9922 | plt = htab->elf.splt; | |
a345bc8d AM |
9923 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9924 | if (pent->plt.offset != (bfd_vma) -1 | |
9925 | && pent->addend == 0) | |
9926 | { | |
afe397ea AM |
9927 | /* For ELFv2, if this symbol is not defined in a regular file |
9928 | and we are not generating a shared library or pie, then we | |
9929 | need to define the symbol in the executable on a call stub. | |
9930 | This is to avoid text relocations. */ | |
9e390558 AM |
9931 | bfd_vma off, stub_align, stub_off, stub_size; |
9932 | unsigned int align_power; | |
9933 | ||
9934 | stub_size = 16; | |
9935 | stub_off = s->size; | |
9936 | if (htab->params->plt_stub_align >= 0) | |
9937 | align_power = htab->params->plt_stub_align; | |
9938 | else | |
9939 | align_power = -htab->params->plt_stub_align; | |
9940 | /* Setting section alignment is delayed until we know it is | |
9941 | non-empty. Otherwise the .text output section will be | |
9942 | aligned at least to plt_stub_align even when no global | |
9943 | entry stubs are needed. */ | |
9944 | if (s->alignment_power < align_power) | |
9945 | s->alignment_power = align_power; | |
9946 | stub_align = (bfd_vma) 1 << align_power; | |
9947 | if (htab->params->plt_stub_align >= 0 | |
9948 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9949 | - (stub_off & -stub_align)) | |
9950 | > ((stub_size - 1) & -stub_align))) | |
9951 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9952 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9953 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9954 | /* Note that for --plt-stub-align negative we have a possible | |
9955 | dependency between stub offset and size. Break that | |
9956 | dependency by assuming the max stub size when calculating | |
9957 | the stub offset. */ | |
9958 | if (PPC_HA (off) == 0) | |
9959 | stub_size -= 4; | |
8a2058b5 | 9960 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9961 | h->root.u.def.section = s; |
9e390558 AM |
9962 | h->root.u.def.value = stub_off; |
9963 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9964 | break; |
9965 | } | |
9966 | return TRUE; | |
9967 | } | |
9968 | ||
65f38f15 AM |
9969 | /* Set the sizes of the dynamic sections. */ |
9970 | ||
b34976b6 | 9971 | static bfd_boolean |
ee67d69a | 9972 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9973 | struct bfd_link_info *info) |
65f38f15 AM |
9974 | { |
9975 | struct ppc_link_hash_table *htab; | |
9976 | bfd *dynobj; | |
9977 | asection *s; | |
b34976b6 | 9978 | bfd_boolean relocs; |
65f38f15 | 9979 | bfd *ibfd; |
7865406b | 9980 | struct got_entry *first_tlsld; |
65f38f15 AM |
9981 | |
9982 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9983 | if (htab == NULL) |
9984 | return FALSE; | |
9985 | ||
65f38f15 AM |
9986 | dynobj = htab->elf.dynobj; |
9987 | if (dynobj == NULL) | |
9988 | abort (); | |
9989 | ||
9990 | if (htab->elf.dynamic_sections_created) | |
9991 | { | |
9992 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9993 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9994 | { |
3d4d4302 | 9995 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9996 | if (s == NULL) |
9997 | abort (); | |
eea6121a | 9998 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9999 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10000 | } | |
10001 | } | |
10002 | ||
10003 | /* Set up .got offsets for local syms, and space for local dynamic | |
10004 | relocs. */ | |
c72f2fb2 | 10005 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10006 | { |
411e1bfb AM |
10007 | struct got_entry **lgot_ents; |
10008 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10009 | struct plt_entry **local_plt; |
10010 | struct plt_entry **end_local_plt; | |
f961d9dd | 10011 | unsigned char *lgot_masks; |
65f38f15 AM |
10012 | bfd_size_type locsymcount; |
10013 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10014 | |
0c8d6e5c | 10015 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10016 | continue; |
10017 | ||
10018 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10019 | { | |
19e08130 | 10020 | struct ppc_dyn_relocs *p; |
65f38f15 | 10021 | |
6edfbbad | 10022 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10023 | { |
ec338859 AM |
10024 | if (!bfd_is_abs_section (p->sec) |
10025 | && bfd_is_abs_section (p->sec->output_section)) | |
10026 | { | |
10027 | /* Input section has been discarded, either because | |
10028 | it is a copy of a linkonce section or due to | |
10029 | linker script /DISCARD/, so we'll be discarding | |
10030 | the relocs too. */ | |
10031 | } | |
248866a8 | 10032 | else if (p->count != 0) |
ec338859 | 10033 | { |
19e08130 AM |
10034 | asection *srel = elf_section_data (p->sec)->sreloc; |
10035 | if (p->ifunc) | |
33e44f2e | 10036 | srel = htab->elf.irelplt; |
eea6121a | 10037 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10038 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10039 | info->flags |= DF_TEXTREL; | |
ec338859 | 10040 | } |
65f38f15 AM |
10041 | } |
10042 | } | |
10043 | ||
411e1bfb AM |
10044 | lgot_ents = elf_local_got_ents (ibfd); |
10045 | if (!lgot_ents) | |
65f38f15 AM |
10046 | continue; |
10047 | ||
0ffa91dd | 10048 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10049 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10050 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10051 | local_plt = (struct plt_entry **) end_lgot_ents; |
10052 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10053 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10054 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10055 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10056 | { |
0b8bcf0d | 10057 | struct got_entry **pent, *ent; |
411e1bfb | 10058 | |
0b8bcf0d AM |
10059 | pent = lgot_ents; |
10060 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10061 | if (ent->got.refcount > 0) |
10062 | { | |
e7b938ca | 10063 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10064 | { |
927be08e | 10065 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10066 | *pent = ent->next; |
411e1bfb AM |
10067 | } |
10068 | else | |
10069 | { | |
19e08130 AM |
10070 | unsigned int ent_size = 8; |
10071 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10072 | ||
eea6121a | 10073 | ent->got.offset = s->size; |
e7b938ca | 10074 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10075 | { |
19e08130 AM |
10076 | ent_size *= 2; |
10077 | rel_size *= 2; | |
10078 | } | |
10079 | s->size += ent_size; | |
37da22e5 | 10080 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10081 | { |
33e44f2e | 10082 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10083 | htab->got_reli_size += rel_size; |
10084 | } | |
93370e8e AM |
10085 | else if (bfd_link_pic (info) |
10086 | && !(ent->tls_type != 0 | |
10087 | && bfd_link_executable (info))) | |
19e08130 AM |
10088 | { |
10089 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10090 | srel->size += rel_size; | |
927be08e | 10091 | } |
0b8bcf0d | 10092 | pent = &ent->next; |
411e1bfb AM |
10093 | } |
10094 | } | |
10095 | else | |
0b8bcf0d | 10096 | *pent = ent->next; |
65f38f15 | 10097 | } |
e054468f | 10098 | |
2d7ad24e AM |
10099 | /* Allocate space for plt calls to local syms. */ |
10100 | lgot_masks = (unsigned char *) end_local_plt; | |
10101 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10102 | { |
10103 | struct plt_entry *ent; | |
10104 | ||
10105 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10106 | if (ent->plt.refcount > 0) | |
10107 | { | |
2d7ad24e AM |
10108 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10109 | { | |
10110 | s = htab->elf.iplt; | |
10111 | ent->plt.offset = s->size; | |
10112 | s->size += PLT_ENTRY_SIZE (htab); | |
10113 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10114 | } | |
3e04d765 AM |
10115 | else if (htab->can_convert_all_inline_plt |
10116 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10117 | ent->plt.offset = (bfd_vma) -1; |
10118 | else | |
10119 | { | |
10120 | s = htab->pltlocal; | |
10121 | ent->plt.offset = s->size; | |
10122 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10123 | if (bfd_link_pic (info)) | |
10124 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10125 | } | |
e054468f AM |
10126 | } |
10127 | else | |
10128 | ent->plt.offset = (bfd_vma) -1; | |
10129 | } | |
65f38f15 AM |
10130 | } |
10131 | ||
10132 | /* Allocate global sym .plt and .got entries, and space for global | |
10133 | sym dynamic relocs. */ | |
4ce794b7 | 10134 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10135 | |
0e1862bb | 10136 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10137 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10138 | |
7865406b | 10139 | first_tlsld = NULL; |
c72f2fb2 | 10140 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10141 | { |
7865406b AM |
10142 | struct got_entry *ent; |
10143 | ||
0c8d6e5c | 10144 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10145 | continue; |
10146 | ||
7865406b AM |
10147 | ent = ppc64_tlsld_got (ibfd); |
10148 | if (ent->got.refcount > 0) | |
102890f0 | 10149 | { |
7865406b | 10150 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10151 | { |
7865406b AM |
10152 | ent->is_indirect = TRUE; |
10153 | ent->got.ent = first_tlsld; | |
10154 | } | |
10155 | else | |
10156 | { | |
10157 | if (first_tlsld == NULL) | |
10158 | first_tlsld = ent; | |
10159 | s = ppc64_elf_tdata (ibfd)->got; | |
10160 | ent->got.offset = s->size; | |
10161 | ent->owner = ibfd; | |
10162 | s->size += 16; | |
f749f26e | 10163 | if (bfd_link_dll (info)) |
7865406b AM |
10164 | { |
10165 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10166 | srel->size += sizeof (Elf64_External_Rela); | |
10167 | } | |
102890f0 AM |
10168 | } |
10169 | } | |
10170 | else | |
7865406b | 10171 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10172 | } |
10173 | ||
65f38f15 AM |
10174 | /* We now have determined the sizes of the various dynamic sections. |
10175 | Allocate memory for them. */ | |
b34976b6 | 10176 | relocs = FALSE; |
65f38f15 AM |
10177 | for (s = dynobj->sections; s != NULL; s = s->next) |
10178 | { | |
10179 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10180 | continue; | |
10181 | ||
4ce794b7 | 10182 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10183 | /* These haven't been allocated yet; don't strip. */ |
10184 | continue; | |
33e44f2e AM |
10185 | else if (s == htab->elf.sgot |
10186 | || s == htab->elf.splt | |
10187 | || s == htab->elf.iplt | |
2d7ad24e | 10188 | || s == htab->pltlocal |
c456f082 | 10189 | || s == htab->glink |
9e390558 | 10190 | || s == htab->global_entry |
5474d94f AM |
10191 | || s == htab->elf.sdynbss |
10192 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10193 | { |
10194 | /* Strip this section if we don't need it; see the | |
10195 | comment below. */ | |
5bd4f169 | 10196 | } |
58d180e8 AM |
10197 | else if (s == htab->glink_eh_frame) |
10198 | { | |
10199 | if (!bfd_is_abs_section (s->output_section)) | |
10200 | /* Not sized yet. */ | |
10201 | continue; | |
10202 | } | |
70cc837d | 10203 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10204 | { |
c456f082 | 10205 | if (s->size != 0) |
5bd4f169 | 10206 | { |
33e44f2e | 10207 | if (s != htab->elf.srelplt) |
b34976b6 | 10208 | relocs = TRUE; |
5bd4f169 AM |
10209 | |
10210 | /* We use the reloc_count field as a counter if we need | |
10211 | to copy relocs into the output file. */ | |
10212 | s->reloc_count = 0; | |
10213 | } | |
10214 | } | |
65f38f15 | 10215 | else |
5bd4f169 AM |
10216 | { |
10217 | /* It's not one of our sections, so don't allocate space. */ | |
10218 | continue; | |
10219 | } | |
10220 | ||
eea6121a | 10221 | if (s->size == 0) |
5bd4f169 | 10222 | { |
c456f082 AM |
10223 | /* If we don't need this section, strip it from the |
10224 | output file. This is mostly to handle .rela.bss and | |
10225 | .rela.plt. We must create both sections in | |
10226 | create_dynamic_sections, because they must be created | |
10227 | before the linker maps input sections to output | |
10228 | sections. The linker does that before | |
10229 | adjust_dynamic_symbol is called, and it is that | |
10230 | function which decides whether anything needs to go | |
10231 | into these sections. */ | |
8423293d | 10232 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10233 | continue; |
10234 | } | |
10235 | ||
06bcf541 AM |
10236 | if (bfd_is_abs_section (s->output_section)) |
10237 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10238 | s->name); | |
10239 | ||
c456f082 | 10240 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10241 | continue; |
10242 | ||
65f38f15 AM |
10243 | /* Allocate memory for the section contents. We use bfd_zalloc |
10244 | here in case unused entries are not reclaimed before the | |
10245 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10246 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10247 | sections instead of garbage. | |
10248 | We also rely on the section contents being zero when writing | |
5474d94f | 10249 | the GOT and .dynrelro. */ |
eea6121a | 10250 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10251 | if (s->contents == NULL) |
b34976b6 | 10252 | return FALSE; |
5bd4f169 AM |
10253 | } |
10254 | ||
c72f2fb2 | 10255 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10256 | { |
0c8d6e5c | 10257 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10258 | continue; |
10259 | ||
e717da7e | 10260 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10261 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10262 | { |
eea6121a | 10263 | if (s->size == 0) |
8423293d | 10264 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10265 | else |
10266 | { | |
eea6121a | 10267 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10268 | if (s->contents == NULL) |
10269 | return FALSE; | |
10270 | } | |
10271 | } | |
10272 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10273 | if (s != NULL) | |
10274 | { | |
eea6121a | 10275 | if (s->size == 0) |
8423293d | 10276 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10277 | else |
10278 | { | |
eea6121a | 10279 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10280 | if (s->contents == NULL) |
10281 | return FALSE; | |
10282 | relocs = TRUE; | |
10283 | s->reloc_count = 0; | |
10284 | } | |
10285 | } | |
10286 | } | |
10287 | ||
e86ce104 | 10288 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10289 | { |
e8910a83 AM |
10290 | bfd_boolean tls_opt; |
10291 | ||
5bd4f169 AM |
10292 | /* Add some entries to the .dynamic section. We fill in the |
10293 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10294 | must add the entries now so that we get the correct size for | |
10295 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10296 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10297 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10298 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10299 | |
0e1862bb | 10300 | if (bfd_link_executable (info)) |
5bd4f169 | 10301 | { |
dc810e39 | 10302 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10303 | return FALSE; |
5bd4f169 AM |
10304 | } |
10305 | ||
33e44f2e | 10306 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10307 | { |
dc810e39 AM |
10308 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10309 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10310 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10311 | || !add_dynamic_entry (DT_JMPREL, 0) |
10312 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10313 | return FALSE; |
5bd4f169 AM |
10314 | } |
10315 | ||
ee67d69a | 10316 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10317 | { |
10318 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10319 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10320 | return FALSE; |
19397422 AM |
10321 | } |
10322 | ||
7c9cf415 | 10323 | tls_opt = (htab->params->tls_get_addr_opt |
9e7028aa AM |
10324 | && ((htab->tls_get_addr_fd != NULL |
10325 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
10326 | || (htab->tga_desc_fd != NULL | |
10327 | && htab->tga_desc_fd->elf.plt.plist != NULL))); | |
e8910a83 AM |
10328 | if (tls_opt || !htab->opd_abi) |
10329 | { | |
10330 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10331 | return FALSE; | |
10332 | } | |
a7f2871e | 10333 | |
5bd4f169 AM |
10334 | if (relocs) |
10335 | { | |
dc810e39 AM |
10336 | if (!add_dynamic_entry (DT_RELA, 0) |
10337 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10338 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10339 | return FALSE; |
5bd4f169 | 10340 | |
65f38f15 AM |
10341 | /* If any dynamic relocs apply to a read-only section, |
10342 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10343 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
10344 | elf_link_hash_traverse (&htab->elf, |
10345 | _bfd_elf_maybe_set_textrel, info); | |
5bd4f169 | 10346 | |
65f38f15 | 10347 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10348 | { |
65f38f15 | 10349 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10350 | return FALSE; |
5bd4f169 | 10351 | } |
5bd4f169 | 10352 | } |
5bd4f169 | 10353 | } |
65f38f15 | 10354 | #undef add_dynamic_entry |
5bd4f169 | 10355 | |
b34976b6 | 10356 | return TRUE; |
5bd4f169 AM |
10357 | } |
10358 | ||
a345bc8d AM |
10359 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10360 | ||
10361 | static bfd_boolean | |
10362 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10363 | { | |
10364 | if (h->plt.plist != NULL | |
10365 | && !h->def_regular | |
10366 | && !h->pointer_equality_needed) | |
10367 | return FALSE; | |
10368 | ||
10369 | return _bfd_elf_hash_symbol (h); | |
10370 | } | |
10371 | ||
721956f4 | 10372 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10373 | |
4ce794b7 AM |
10374 | static inline enum ppc_stub_type |
10375 | ppc_type_of_stub (asection *input_sec, | |
10376 | const Elf_Internal_Rela *rel, | |
10377 | struct ppc_link_hash_entry **hash, | |
e054468f | 10378 | struct plt_entry **plt_ent, |
6911b7dc AM |
10379 | bfd_vma destination, |
10380 | unsigned long local_off) | |
5bd4f169 | 10381 | { |
721956f4 AM |
10382 | struct ppc_link_hash_entry *h = *hash; |
10383 | bfd_vma location; | |
10384 | bfd_vma branch_offset; | |
10385 | bfd_vma max_branch_offset; | |
4ce794b7 | 10386 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10387 | |
721956f4 AM |
10388 | if (h != NULL) |
10389 | { | |
e054468f | 10390 | struct plt_entry *ent; |
7fe2b9a6 | 10391 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10392 | if (h->oh != NULL |
10393 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10394 | { |
10395 | fdh = ppc_follow_link (h->oh); | |
10396 | *hash = fdh; | |
10397 | } | |
8387904d | 10398 | |
e054468f AM |
10399 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10400 | if (ent->addend == rel->r_addend | |
10401 | && ent->plt.offset != (bfd_vma) -1) | |
10402 | { | |
e054468f AM |
10403 | *plt_ent = ent; |
10404 | return ppc_stub_plt_call; | |
10405 | } | |
5bd4f169 | 10406 | |
7fe2b9a6 AM |
10407 | /* Here, we know we don't have a plt entry. If we don't have a |
10408 | either a defined function descriptor or a defined entry symbol | |
10409 | in a regular object file, then it is pointless trying to make | |
10410 | any other type of stub. */ | |
854b41e7 AM |
10411 | if (!is_static_defined (&fdh->elf) |
10412 | && !is_static_defined (&h->elf)) | |
721956f4 | 10413 | return ppc_stub_none; |
5d1634d7 | 10414 | } |
e054468f AM |
10415 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10416 | { | |
10417 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10418 | struct plt_entry **local_plt = (struct plt_entry **) | |
10419 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10420 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10421 | ||
10422 | if (local_plt[r_symndx] != NULL) | |
10423 | { | |
10424 | struct plt_entry *ent; | |
10425 | ||
10426 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10427 | if (ent->addend == rel->r_addend | |
10428 | && ent->plt.offset != (bfd_vma) -1) | |
10429 | { | |
10430 | *plt_ent = ent; | |
10431 | return ppc_stub_plt_call; | |
10432 | } | |
10433 | } | |
10434 | } | |
5d1634d7 | 10435 | |
721956f4 AM |
10436 | /* Determine where the call point is. */ |
10437 | location = (input_sec->output_offset | |
10438 | + input_sec->output_section->vma | |
10439 | + rel->r_offset); | |
5d1634d7 | 10440 | |
721956f4 AM |
10441 | branch_offset = destination - location; |
10442 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10443 | |
721956f4 AM |
10444 | /* Determine if a long branch stub is needed. */ |
10445 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10446 | if (r_type == R_PPC64_REL14 |
10447 | || r_type == R_PPC64_REL14_BRTAKEN | |
10448 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10449 | max_branch_offset = 1 << 15; |
5d1634d7 | 10450 | |
6911b7dc | 10451 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10452 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10453 | is needed later. */ | |
10454 | return ppc_stub_long_branch; | |
5d1634d7 | 10455 | |
721956f4 | 10456 | return ppc_stub_none; |
5d1634d7 AM |
10457 | } |
10458 | ||
f891966f AM |
10459 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10460 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10461 | . mflr %r12 | |
10462 | . bcl 20,31,1f | |
10463 | .1: mflr %r11 | |
10464 | . mtlr %r12 | |
05d0e962 | 10465 | . lis %r12,xxx-1b@highest |
f891966f | 10466 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10467 | . sldi %r12,%r12,32 |
f891966f | 10468 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10469 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10470 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10471 | |
10472 | static bfd_byte * | |
10473 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10474 | { | |
f891966f AM |
10475 | bfd_put_32 (abfd, MFLR_R12, p); |
10476 | p += 4; | |
10477 | bfd_put_32 (abfd, BCL_20_31, p); | |
10478 | p += 4; | |
10479 | bfd_put_32 (abfd, MFLR_R11, p); | |
10480 | p += 4; | |
10481 | bfd_put_32 (abfd, MTLR_R12, p); | |
10482 | p += 4; | |
05d0e962 AM |
10483 | if (off + 0x8000 < 0x10000) |
10484 | { | |
10485 | if (load) | |
10486 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10487 | else | |
10488 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10489 | p += 4; | |
10490 | } | |
10491 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10492 | { | |
10493 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10494 | p += 4; | |
10495 | if (load) | |
10496 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10497 | else | |
10498 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10499 | p += 4; | |
10500 | } | |
10501 | else | |
10502 | { | |
10503 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10504 | { | |
10505 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10506 | p += 4; | |
10507 | } | |
10508 | else | |
10509 | { | |
10510 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10511 | p += 4; | |
10512 | if (((off >> 32) & 0xffff) != 0) | |
10513 | { | |
10514 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10515 | p += 4; | |
10516 | } | |
10517 | } | |
10518 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10519 | { | |
10520 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10521 | p += 4; | |
10522 | } | |
10523 | if (PPC_HI (off) != 0) | |
10524 | { | |
10525 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10526 | p += 4; | |
10527 | } | |
10528 | if (PPC_LO (off) != 0) | |
10529 | { | |
10530 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10531 | p += 4; | |
10532 | } | |
10533 | if (load) | |
10534 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10535 | else | |
10536 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10537 | p += 4; | |
10538 | } | |
10539 | return p; | |
10540 | } | |
10541 | ||
10542 | static unsigned int | |
10543 | size_offset (bfd_vma off) | |
10544 | { | |
10545 | unsigned int size; | |
10546 | if (off + 0x8000 < 0x10000) | |
10547 | size = 4; | |
10548 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10549 | size = 8; | |
10550 | else | |
10551 | { | |
10552 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10553 | size = 4; | |
10554 | else | |
10555 | { | |
10556 | size = 4; | |
10557 | if (((off >> 32) & 0xffff) != 0) | |
10558 | size += 4; | |
10559 | } | |
10560 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10561 | size += 4; | |
10562 | if (PPC_HI (off) != 0) | |
10563 | size += 4; | |
10564 | if (PPC_LO (off) != 0) | |
10565 | size += 4; | |
10566 | size += 4; | |
10567 | } | |
f891966f | 10568 | return size + 16; |
05d0e962 AM |
10569 | } |
10570 | ||
3d58e1fc AM |
10571 | static unsigned int |
10572 | num_relocs_for_offset (bfd_vma off) | |
10573 | { | |
10574 | unsigned int num_rel; | |
10575 | if (off + 0x8000 < 0x10000) | |
10576 | num_rel = 1; | |
10577 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10578 | num_rel = 2; | |
10579 | else | |
10580 | { | |
10581 | num_rel = 1; | |
10582 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10583 | && ((off >> 32) & 0xffff) != 0) | |
10584 | num_rel += 1; | |
10585 | if (PPC_HI (off) != 0) | |
10586 | num_rel += 1; | |
10587 | if (PPC_LO (off) != 0) | |
10588 | num_rel += 1; | |
10589 | } | |
10590 | return num_rel; | |
10591 | } | |
10592 | ||
10593 | static Elf_Internal_Rela * | |
10594 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10595 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10596 | { | |
10597 | bfd_vma relative_targ = targ - (roff - 8); | |
10598 | if (bfd_big_endian (info->output_bfd)) | |
10599 | roff += 2; | |
10600 | r->r_offset = roff; | |
10601 | r->r_addend = relative_targ + roff; | |
10602 | if (off + 0x8000 < 0x10000) | |
10603 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10604 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10605 | { | |
10606 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10607 | ++r; | |
10608 | roff += 4; | |
10609 | r->r_offset = roff; | |
10610 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10611 | r->r_addend = relative_targ + roff; | |
10612 | } | |
10613 | else | |
10614 | { | |
10615 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10616 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10617 | else | |
10618 | { | |
10619 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10620 | if (((off >> 32) & 0xffff) != 0) | |
10621 | { | |
10622 | ++r; | |
10623 | roff += 4; | |
10624 | r->r_offset = roff; | |
10625 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10626 | r->r_addend = relative_targ + roff; | |
10627 | } | |
10628 | } | |
10629 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10630 | roff += 4; | |
10631 | if (PPC_HI (off) != 0) | |
10632 | { | |
10633 | ++r; | |
10634 | roff += 4; | |
10635 | r->r_offset = roff; | |
10636 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10637 | r->r_addend = relative_targ + roff; | |
10638 | } | |
10639 | if (PPC_LO (off) != 0) | |
10640 | { | |
10641 | ++r; | |
10642 | roff += 4; | |
10643 | r->r_offset = roff; | |
10644 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10645 | r->r_addend = relative_targ + roff; | |
10646 | } | |
10647 | } | |
10648 | return r; | |
10649 | } | |
10650 | ||
04bdff6a | 10651 | static bfd_byte * |
7c1f4227 | 10652 | build_power10_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, |
04bdff6a AM |
10653 | bfd_boolean load) |
10654 | { | |
10655 | uint64_t insn; | |
10656 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10657 | { | |
10658 | off -= odd; | |
10659 | if (odd) | |
10660 | { | |
10661 | bfd_put_32 (abfd, NOP, p); | |
10662 | p += 4; | |
10663 | } | |
10664 | if (load) | |
10665 | insn = PLD_R12_PC; | |
10666 | else | |
10667 | insn = PADDI_R12_PC; | |
10668 | insn |= D34 (off); | |
10669 | bfd_put_32 (abfd, insn >> 32, p); | |
10670 | p += 4; | |
10671 | bfd_put_32 (abfd, insn, p); | |
10672 | } | |
10673 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10674 | for li is -0x8000, which when shifted by 34 and added gives a | |
10675 | minimum value of -0x2000200000000. The maximum value is | |
10676 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10677 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10678 | { | |
10679 | off -= 8 - odd; | |
10680 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10681 | p += 4; | |
10682 | if (!odd) | |
10683 | { | |
10684 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10685 | p += 4; | |
10686 | } | |
10687 | insn = PADDI_R12_PC | D34 (off); | |
10688 | bfd_put_32 (abfd, insn >> 32, p); | |
10689 | p += 4; | |
10690 | bfd_put_32 (abfd, insn, p); | |
10691 | p += 4; | |
10692 | if (odd) | |
10693 | { | |
10694 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10695 | p += 4; | |
10696 | } | |
10697 | if (load) | |
10698 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10699 | else | |
10700 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10701 | } | |
10702 | else | |
10703 | { | |
10704 | off -= odd + 8; | |
10705 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10706 | p += 4; | |
10707 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10708 | p += 4; | |
10709 | if (odd) | |
10710 | { | |
10711 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10712 | p += 4; | |
10713 | } | |
10714 | insn = PADDI_R12_PC | D34 (off); | |
10715 | bfd_put_32 (abfd, insn >> 32, p); | |
10716 | p += 4; | |
10717 | bfd_put_32 (abfd, insn, p); | |
10718 | p += 4; | |
10719 | if (!odd) | |
10720 | { | |
10721 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10722 | p += 4; | |
10723 | } | |
10724 | if (load) | |
10725 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10726 | else | |
10727 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10728 | } | |
10729 | p += 4; | |
10730 | return p; | |
10731 | } | |
10732 | ||
10733 | static unsigned int | |
7c1f4227 | 10734 | size_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10735 | { |
10736 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10737 | return odd + 8; | |
10738 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10739 | return 20; | |
10740 | else | |
10741 | return 24; | |
10742 | } | |
10743 | ||
10744 | static unsigned int | |
7c1f4227 | 10745 | num_relocs_for_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10746 | { |
10747 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10748 | return 1; | |
10749 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10750 | return 2; | |
10751 | else | |
10752 | return 3; | |
10753 | } | |
10754 | ||
10755 | static Elf_Internal_Rela * | |
7c1f4227 | 10756 | emit_relocs_for_power10_offset (struct bfd_link_info *info, |
04bdff6a AM |
10757 | Elf_Internal_Rela *r, bfd_vma roff, |
10758 | bfd_vma targ, bfd_vma off, int odd) | |
10759 | { | |
10760 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10761 | roff += odd; | |
10762 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10763 | { | |
10764 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10765 | r->r_offset = roff + d_offset; | |
10766 | r->r_addend = targ + 8 - odd - d_offset; | |
10767 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10768 | ++r; | |
10769 | roff += 8 - odd; | |
10770 | } | |
10771 | else | |
10772 | { | |
10773 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10774 | r->r_offset = roff + d_offset; | |
10775 | r->r_addend = targ + 8 + odd - d_offset; | |
10776 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10777 | ++r; | |
10778 | roff += 4; | |
10779 | r->r_offset = roff + d_offset; | |
10780 | r->r_addend = targ + 4 + odd - d_offset; | |
10781 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10782 | ++r; | |
10783 | roff += 4 + odd; | |
10784 | } | |
10785 | r->r_offset = roff; | |
10786 | r->r_addend = targ; | |
10787 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10788 | return r; | |
10789 | } | |
10790 | ||
df136d64 AM |
10791 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10792 | ||
10793 | static bfd_byte * | |
10794 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10795 | { | |
10796 | delta /= 4; | |
10797 | if (delta < 64) | |
10798 | *eh++ = DW_CFA_advance_loc + delta; | |
10799 | else if (delta < 256) | |
10800 | { | |
10801 | *eh++ = DW_CFA_advance_loc1; | |
10802 | *eh++ = delta; | |
10803 | } | |
10804 | else if (delta < 65536) | |
10805 | { | |
10806 | *eh++ = DW_CFA_advance_loc2; | |
10807 | bfd_put_16 (abfd, delta, eh); | |
10808 | eh += 2; | |
10809 | } | |
10810 | else | |
10811 | { | |
10812 | *eh++ = DW_CFA_advance_loc4; | |
10813 | bfd_put_32 (abfd, delta, eh); | |
10814 | eh += 4; | |
10815 | } | |
10816 | return eh; | |
10817 | } | |
10818 | ||
10819 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10820 | ||
10821 | static unsigned int | |
10822 | eh_advance_size (unsigned int delta) | |
10823 | { | |
10824 | if (delta < 64 * 4) | |
10825 | /* DW_CFA_advance_loc+[1..63]. */ | |
10826 | return 1; | |
10827 | if (delta < 256 * 4) | |
10828 | /* DW_CFA_advance_loc1, byte. */ | |
10829 | return 2; | |
10830 | if (delta < 65536 * 4) | |
10831 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10832 | return 3; | |
10833 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10834 | return 5; | |
10835 | } | |
10836 | ||
794e51c0 AM |
10837 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10838 | to update a plt entry in one thread and have another thread see a | |
10839 | stale zero toc entry. To avoid this we need some sort of acquire | |
10840 | barrier in the call stub. One solution is to make the load of the | |
10841 | toc word seem to appear to depend on the load of the function entry | |
10842 | word. Another solution is to test for r2 being zero, and branch to | |
10843 | the appropriate glink entry if so. | |
10844 | ||
10845 | . fake dep barrier compare | |
71a39c98 AM |
10846 | . ld 12,xxx(2) ld 12,xxx(2) |
10847 | . mtctr 12 mtctr 12 | |
10848 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10849 | . add 2,2,11 cmpldi 2,0 |
10850 | . ld 2,xxx+8(2) bnectr+ | |
10851 | . bctr b <glink_entry> | |
10852 | ||
10853 | The solution involving the compare turns out to be faster, so | |
10854 | that's what we use unless the branch won't reach. */ | |
10855 | ||
10856 | #define ALWAYS_USE_FAKE_DEP 0 | |
10857 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10858 | |
794e51c0 AM |
10859 | static inline unsigned int |
10860 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10861 | struct ppc_stub_hash_entry *stub_entry, | |
29433886 AM |
10862 | bfd_vma off, |
10863 | unsigned int odd) | |
794e51c0 | 10864 | { |
05d0e962 | 10865 | unsigned size; |
b9e5796b | 10866 | |
05d0e962 AM |
10867 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10868 | { | |
e10a07b3 | 10869 | if (htab->params->power10_stubs != 0) |
29433886 | 10870 | size = 8 + size_power10_offset (off, odd); |
04bdff6a AM |
10871 | else |
10872 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10873 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10874 | size += 4; | |
05d0e962 | 10875 | } |
29433886 | 10876 | else |
b9e5796b | 10877 | { |
29433886 AM |
10878 | size = 12; |
10879 | if (ALWAYS_EMIT_R2SAVE | |
10880 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
b9e5796b | 10881 | size += 4; |
29433886 | 10882 | if (PPC_HA (off) != 0) |
b9e5796b | 10883 | size += 4; |
29433886 AM |
10884 | if (htab->opd_abi) |
10885 | { | |
10886 | size += 4; | |
10887 | if (htab->params->plt_static_chain) | |
10888 | size += 4; | |
10889 | if (htab->params->plt_thread_safe | |
10890 | && htab->elf.dynamic_sections_created | |
10891 | && stub_entry->h != NULL | |
10892 | && stub_entry->h->elf.dynindx != -1) | |
10893 | size += 8; | |
10894 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) | |
10895 | != PPC_HA (off)) | |
10896 | size += 4; | |
10897 | } | |
b9e5796b | 10898 | } |
794e51c0 | 10899 | if (stub_entry->h != NULL |
ed7007c1 | 10900 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10901 | && htab->params->tls_get_addr_opt) |
f378ab09 | 10902 | { |
29433886 | 10903 | if (!htab->params->no_tls_get_addr_regsave) |
9e7028aa | 10904 | { |
29433886 AM |
10905 | size += 30 * 4; |
10906 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
10907 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10908 | size += 4; | |
9e7028aa AM |
10909 | } |
10910 | else | |
10911 | { | |
29433886 AM |
10912 | size += 7 * 4; |
10913 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
10914 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10915 | size += 6 * 4; | |
9e7028aa | 10916 | } |
f378ab09 | 10917 | } |
794e51c0 AM |
10918 | return size; |
10919 | } | |
10920 | ||
2420fff6 AM |
10921 | /* Depending on the sign of plt_stub_align: |
10922 | If positive, return the padding to align to a 2**plt_stub_align | |
10923 | boundary. | |
10924 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10925 | boundaries if we align, then return the padding needed to do so. */ | |
10926 | ||
794e51c0 AM |
10927 | static inline unsigned int |
10928 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10929 | struct ppc_stub_hash_entry *stub_entry, | |
29433886 AM |
10930 | bfd_vma plt_off, |
10931 | unsigned int odd) | |
794e51c0 | 10932 | { |
2420fff6 | 10933 | int stub_align; |
1aa42141 | 10934 | unsigned stub_size; |
6f20ed8a | 10935 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10936 | |
2420fff6 AM |
10937 | if (htab->params->plt_stub_align >= 0) |
10938 | { | |
10939 | stub_align = 1 << htab->params->plt_stub_align; | |
10940 | if ((stub_off & (stub_align - 1)) != 0) | |
10941 | return stub_align - (stub_off & (stub_align - 1)); | |
10942 | return 0; | |
10943 | } | |
10944 | ||
10945 | stub_align = 1 << -htab->params->plt_stub_align; | |
29433886 | 10946 | stub_size = plt_stub_size (htab, stub_entry, plt_off, odd); |
794e51c0 | 10947 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10948 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10949 | return stub_align - (stub_off & (stub_align - 1)); |
10950 | return 0; | |
10951 | } | |
10952 | ||
10953 | /* Build a .plt call stub. */ | |
10954 | ||
10955 | static inline bfd_byte * | |
10956 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10957 | struct ppc_stub_hash_entry *stub_entry, | |
10958 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10959 | { | |
e7d1c40c | 10960 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10961 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10962 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10963 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10964 | && htab->elf.dynamic_sections_created | |
10965 | && stub_entry->h != NULL | |
10966 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10967 | bfd_boolean use_fake_dep = plt_thread_safe; |
10968 | bfd_vma cmp_branch_off = 0; | |
10969 | ||
10970 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10971 | && plt_load_toc |
794e51c0 | 10972 | && plt_thread_safe |
9e51d549 AM |
10973 | && !(stub_entry->h != NULL |
10974 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
7c9cf415 | 10975 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10976 | { |
10977 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10978 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10979 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10980 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10981 | bfd_vma to, from; |
10982 | ||
68d62958 AM |
10983 | if (pltindex > 32768) |
10984 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10985 | to = (glinkoff |
10986 | + htab->glink->output_offset | |
10987 | + htab->glink->output_section->vma); | |
6f20ed8a | 10988 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10989 | + 4 * (ALWAYS_EMIT_R2SAVE |
10990 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10991 | + 4 * (PPC_HA (offset) != 0) | |
10992 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10993 | != PPC_HA (offset)) | |
10994 | + 4 * (plt_static_chain != 0) | |
10995 | + 20 | |
6f20ed8a AM |
10996 | + stub_entry->group->stub_sec->output_offset |
10997 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10998 | cmp_branch_off = to - from; |
10999 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
11000 | } | |
11001 | ||
ac2df442 AM |
11002 | if (PPC_HA (offset) != 0) |
11003 | { | |
176a0d42 AM |
11004 | if (r != NULL) |
11005 | { | |
794e51c0 AM |
11006 | if (ALWAYS_EMIT_R2SAVE |
11007 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11008 | r[0].r_offset += 4; | |
176a0d42 | 11009 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 11010 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
11011 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
11012 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 11013 | if (plt_load_toc) |
176a0d42 | 11014 | { |
b9e5796b | 11015 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11016 | { |
b9e5796b AM |
11017 | r[2].r_offset = r[1].r_offset + 4; |
11018 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
11019 | r[2].r_addend = r[0].r_addend; | |
11020 | } | |
11021 | else | |
11022 | { | |
11023 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
11024 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11025 | r[2].r_addend = r[0].r_addend + 8; | |
11026 | if (plt_static_chain) | |
11027 | { | |
11028 | r[3].r_offset = r[2].r_offset + 4; | |
11029 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11030 | r[3].r_addend = r[0].r_addend + 16; | |
11031 | } | |
c7131b65 | 11032 | } |
176a0d42 AM |
11033 | } |
11034 | } | |
794e51c0 AM |
11035 | if (ALWAYS_EMIT_R2SAVE |
11036 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11037 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
11038 | if (plt_load_toc) |
11039 | { | |
11040 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
11041 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
11042 | } | |
11043 | else | |
11044 | { | |
11045 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
11046 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
11047 | } | |
b9e5796b AM |
11048 | if (plt_load_toc |
11049 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 11050 | { |
71a39c98 | 11051 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
11052 | offset = 0; |
11053 | } | |
71a39c98 | 11054 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11055 | if (plt_load_toc) |
794e51c0 | 11056 | { |
b9e5796b AM |
11057 | if (use_fake_dep) |
11058 | { | |
11059 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
11060 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
11061 | } | |
11062 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
11063 | if (plt_static_chain) | |
11064 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 11065 | } |
ac2df442 AM |
11066 | } |
11067 | else | |
11068 | { | |
176a0d42 AM |
11069 | if (r != NULL) |
11070 | { | |
794e51c0 AM |
11071 | if (ALWAYS_EMIT_R2SAVE |
11072 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11073 | r[0].r_offset += 4; | |
176a0d42 | 11074 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 11075 | if (plt_load_toc) |
176a0d42 | 11076 | { |
b9e5796b | 11077 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11078 | { |
b9e5796b AM |
11079 | r[1].r_offset = r[0].r_offset + 4; |
11080 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
11081 | r[1].r_addend = r[0].r_addend; | |
11082 | } | |
11083 | else | |
11084 | { | |
11085 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
11086 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11087 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
11088 | if (plt_static_chain) | |
11089 | { | |
11090 | r[2].r_offset = r[1].r_offset + 4; | |
11091 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11092 | r[2].r_addend = r[0].r_addend + 8; | |
11093 | } | |
c7131b65 | 11094 | } |
176a0d42 AM |
11095 | } |
11096 | } | |
794e51c0 AM |
11097 | if (ALWAYS_EMIT_R2SAVE |
11098 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11099 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11100 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11101 | if (plt_load_toc |
11102 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11103 | { |
11104 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11105 | offset = 0; | |
11106 | } | |
71a39c98 | 11107 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11108 | if (plt_load_toc) |
794e51c0 | 11109 | { |
b9e5796b AM |
11110 | if (use_fake_dep) |
11111 | { | |
11112 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11113 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11114 | } | |
11115 | if (plt_static_chain) | |
11116 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11117 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11118 | } |
ac2df442 | 11119 | } |
b9e5796b | 11120 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11121 | { |
11122 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11123 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11124 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11125 | } |
11126 | else | |
407aa07c | 11127 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11128 | return p; |
11129 | } | |
11130 | ||
a7f2871e AM |
11131 | /* Build a special .plt call stub for __tls_get_addr. */ |
11132 | ||
b9ca1af6 | 11133 | #define LD_R0_0R3 0xe8030000 |
a7f2871e AM |
11134 | #define LD_R12_0R3 0xe9830000 |
11135 | #define MR_R0_R3 0x7c601b78 | |
b9ca1af6 | 11136 | #define CMPDI_R0_0 0x2c200000 |
a7f2871e AM |
11137 | #define ADD_R3_R12_R13 0x7c6c6a14 |
11138 | #define BEQLR 0x4d820020 | |
11139 | #define MR_R3_R0 0x7c030378 | |
a7f2871e | 11140 | #define BCTRL 0x4e800421 |
a7f2871e | 11141 | |
29433886 AM |
11142 | static bfd_byte * |
11143 | build_tls_get_addr_head (struct ppc_link_hash_table *htab, | |
794e51c0 | 11144 | struct ppc_stub_hash_entry *stub_entry, |
29433886 | 11145 | bfd_byte *p) |
a7f2871e | 11146 | { |
e7d1c40c | 11147 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11148 | |
b9ca1af6 | 11149 | bfd_put_32 (obfd, LD_R0_0R3 + 0, p), p += 4; |
a7f2871e | 11150 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; |
b9ca1af6 | 11151 | bfd_put_32 (obfd, CMPDI_R0_0, p), p += 4; |
a7f2871e | 11152 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; |
a7f2871e AM |
11153 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; |
11154 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11155 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9e7028aa | 11156 | |
29433886 AM |
11157 | if (!htab->params->no_tls_get_addr_regsave) |
11158 | p = tls_get_addr_prologue (obfd, p, htab); | |
11159 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11160 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11161 | { | |
9e7028aa AM |
11162 | bfd_put_32 (obfd, MFLR_R0, p); |
11163 | p += 4; | |
11164 | bfd_put_32 (obfd, STD_R0_0R1 + STK_LINKER (htab), p); | |
11165 | p += 4; | |
29433886 AM |
11166 | } |
11167 | return p; | |
11168 | } | |
9e7028aa | 11169 | |
29433886 AM |
11170 | static bfd_byte * |
11171 | build_tls_get_addr_tail (struct ppc_link_hash_table *htab, | |
11172 | struct ppc_stub_hash_entry *stub_entry, | |
11173 | bfd_byte *p, | |
11174 | bfd_byte *loc) | |
11175 | { | |
11176 | bfd *obfd = htab->params->stub_bfd; | |
11177 | ||
11178 | if (!htab->params->no_tls_get_addr_regsave) | |
11179 | { | |
11180 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11181 | ||
11182 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11183 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11184 | { | |
11185 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11186 | p += 4; | |
11187 | } | |
11188 | p = tls_get_addr_epilogue (obfd, p, htab); | |
11189 | } | |
11190 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11191 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11192 | { | |
9e7028aa AM |
11193 | bfd_put_32 (obfd, BCTRL, p - 4); |
11194 | ||
11195 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11196 | p += 4; | |
11197 | bfd_put_32 (obfd, LD_R0_0R1 + STK_LINKER (htab), p); | |
11198 | p += 4; | |
11199 | bfd_put_32 (obfd, MTLR_R0, p); | |
11200 | p += 4; | |
11201 | bfd_put_32 (obfd, BLR, p); | |
11202 | p += 4; | |
11203 | } | |
a7f2871e | 11204 | |
df136d64 AM |
11205 | if (htab->glink_eh_frame != NULL |
11206 | && htab->glink_eh_frame->size != 0) | |
11207 | { | |
11208 | bfd_byte *base, *eh; | |
df136d64 AM |
11209 | |
11210 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11211 | eh = base + stub_entry->group->eh_size; | |
29433886 AM |
11212 | |
11213 | if (!htab->params->no_tls_get_addr_regsave) | |
9e7028aa | 11214 | { |
29433886 AM |
11215 | unsigned int cfa_updt, delta, i; |
11216 | ||
9e7028aa AM |
11217 | /* After the bctrl, lr has been modified so we need to emit |
11218 | .eh_frame info saying the return address is on the stack. In | |
11219 | fact we must put the EH info at or before the call rather | |
11220 | than after it, because the EH info for a call needs to be | |
11221 | specified by that point. | |
11222 | See libgcc/unwind-dw2.c execute_cfa_program. | |
11223 | Any stack pointer update must be described immediately after | |
11224 | the instruction making the change, and since the stdu occurs | |
11225 | after saving regs we put all the reg saves and the cfa | |
11226 | change there. */ | |
11227 | cfa_updt = stub_entry->stub_offset + 18 * 4; | |
11228 | delta = cfa_updt - stub_entry->group->lr_restore; | |
11229 | stub_entry->group->lr_restore | |
11230 | = stub_entry->stub_offset + (p - loc) - 4; | |
11231 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11232 | *eh++ = DW_CFA_def_cfa_offset; | |
11233 | if (htab->opd_abi) | |
11234 | { | |
11235 | *eh++ = 128; | |
11236 | *eh++ = 1; | |
11237 | } | |
11238 | else | |
11239 | *eh++ = 96; | |
11240 | *eh++ = DW_CFA_offset_extended_sf; | |
11241 | *eh++ = 65; | |
11242 | *eh++ = (-16 / 8) & 0x7f; | |
11243 | for (i = 4; i < 12; i++) | |
11244 | { | |
11245 | *eh++ = DW_CFA_offset + i; | |
11246 | *eh++ = (htab->opd_abi ? 13 : 12) - i; | |
11247 | } | |
11248 | *eh++ = (DW_CFA_advance_loc | |
11249 | + (stub_entry->group->lr_restore - 8 - cfa_updt) / 4); | |
11250 | *eh++ = DW_CFA_def_cfa_offset; | |
11251 | *eh++ = 0; | |
11252 | for (i = 4; i < 12; i++) | |
11253 | *eh++ = DW_CFA_restore + i; | |
11254 | *eh++ = DW_CFA_advance_loc + 2; | |
29433886 AM |
11255 | *eh++ = DW_CFA_restore_extended; |
11256 | *eh++ = 65; | |
11257 | stub_entry->group->eh_size = eh - base; | |
11258 | } | |
11259 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11260 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11261 | { | |
11262 | unsigned int lr_used, delta; | |
11263 | ||
11264 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11265 | delta = lr_used - stub_entry->group->lr_restore; | |
11266 | stub_entry->group->lr_restore = lr_used + 16; | |
11267 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11268 | *eh++ = DW_CFA_offset_extended_sf; | |
11269 | *eh++ = 65; | |
11270 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11271 | *eh++ = DW_CFA_advance_loc + 4; | |
11272 | *eh++ = DW_CFA_restore_extended; | |
11273 | *eh++ = 65; | |
11274 | stub_entry->group->eh_size = eh - base; | |
9e7028aa | 11275 | } |
df136d64 | 11276 | } |
a7f2871e AM |
11277 | return p; |
11278 | } | |
11279 | ||
176a0d42 AM |
11280 | static Elf_Internal_Rela * |
11281 | get_relocs (asection *sec, int count) | |
11282 | { | |
11283 | Elf_Internal_Rela *relocs; | |
11284 | struct bfd_elf_section_data *elfsec_data; | |
11285 | ||
11286 | elfsec_data = elf_section_data (sec); | |
11287 | relocs = elfsec_data->relocs; | |
11288 | if (relocs == NULL) | |
11289 | { | |
11290 | bfd_size_type relsize; | |
11291 | relsize = sec->reloc_count * sizeof (*relocs); | |
11292 | relocs = bfd_alloc (sec->owner, relsize); | |
11293 | if (relocs == NULL) | |
11294 | return NULL; | |
11295 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11296 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11297 | sizeof (Elf_Internal_Shdr)); | |
11298 | if (elfsec_data->rela.hdr == NULL) | |
11299 | return NULL; | |
11300 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11301 | * sizeof (Elf64_External_Rela)); | |
11302 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11303 | sec->reloc_count = 0; |
11304 | } | |
11305 | relocs += sec->reloc_count; | |
11306 | sec->reloc_count += count; | |
11307 | return relocs; | |
11308 | } | |
11309 | ||
3d58e1fc AM |
11310 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
11311 | forms, to the equivalent relocs against the global symbol given by | |
11312 | STUB_ENTRY->H. */ | |
11313 | ||
11314 | static bfd_boolean | |
11315 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
11316 | struct ppc_stub_hash_entry *stub_entry, | |
11317 | Elf_Internal_Rela *r, unsigned int num_rel) | |
11318 | { | |
11319 | struct elf_link_hash_entry **hashes; | |
11320 | unsigned long symndx; | |
11321 | struct ppc_link_hash_entry *h; | |
11322 | bfd_vma symval; | |
11323 | ||
11324 | /* Relocs are always against symbols in their own object file. Fake | |
11325 | up global sym hashes for the stub bfd (which has no symbols). */ | |
11326 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
11327 | if (hashes == NULL) | |
11328 | { | |
11329 | bfd_size_type hsize; | |
11330 | ||
11331 | /* When called the first time, stub_globals will contain the | |
11332 | total number of symbols seen during stub sizing. After | |
11333 | allocating, stub_globals is used as an index to fill the | |
11334 | hashes array. */ | |
11335 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11336 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11337 | if (hashes == NULL) | |
11338 | return FALSE; | |
11339 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
11340 | htab->stub_globals = 1; | |
11341 | } | |
11342 | symndx = htab->stub_globals++; | |
11343 | h = stub_entry->h; | |
11344 | hashes[symndx] = &h->elf; | |
11345 | if (h->oh != NULL && h->oh->is_func) | |
11346 | h = ppc_follow_link (h->oh); | |
11347 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11348 | || h->elf.root.type == bfd_link_hash_defweak); | |
ed7007c1 | 11349 | symval = defined_sym_val (&h->elf); |
3d58e1fc AM |
11350 | while (num_rel-- != 0) |
11351 | { | |
11352 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11353 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11354 | { | |
11355 | /* H is an opd symbol. The addend must be zero, and the | |
11356 | branch reloc is the only one we can convert. */ | |
11357 | r->r_addend = 0; | |
11358 | break; | |
11359 | } | |
11360 | else | |
11361 | r->r_addend -= symval; | |
11362 | --r; | |
11363 | } | |
11364 | return TRUE; | |
11365 | } | |
11366 | ||
aa374f67 | 11367 | static bfd_vma |
25f53a85 | 11368 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11369 | struct ppc_stub_hash_entry *stub_entry) |
11370 | { | |
25f53a85 | 11371 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11372 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11373 | |
11374 | if (r2off == 0) | |
11375 | { | |
11376 | /* Support linking -R objects. Get the toc pointer from the | |
11377 | opd entry. */ | |
11378 | char buf[8]; | |
b9e5796b AM |
11379 | if (!htab->opd_abi) |
11380 | return r2off; | |
aa374f67 AM |
11381 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11382 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11383 | ||
11384 | if (strcmp (opd->name, ".opd") != 0 | |
11385 | || opd->reloc_count != 0) | |
11386 | { | |
2cdcc330 AM |
11387 | info->callbacks->einfo |
11388 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11389 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11390 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11391 | return (bfd_vma) -1; |
aa374f67 AM |
11392 | } |
11393 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11394 | return (bfd_vma) -1; |
aa374f67 | 11395 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11396 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11397 | } |
6f20ed8a | 11398 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11399 | return r2off; |
11400 | } | |
11401 | ||
b34976b6 | 11402 | static bfd_boolean |
4ce794b7 | 11403 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11404 | { |
721956f4 AM |
11405 | struct ppc_stub_hash_entry *stub_entry; |
11406 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11407 | struct bfd_link_info *info; |
11408 | struct ppc_link_hash_table *htab; | |
29433886 | 11409 | bfd *obfd; |
721956f4 | 11410 | bfd_byte *loc; |
3d58e1fc | 11411 | bfd_byte *p, *relp; |
1aa42141 | 11412 | bfd_vma targ, off; |
176a0d42 | 11413 | Elf_Internal_Rela *r; |
e054468f | 11414 | asection *plt; |
3d58e1fc | 11415 | int num_rel; |
04bdff6a | 11416 | int odd; |
29433886 | 11417 | bfd_boolean is_tga; |
5d1634d7 | 11418 | |
721956f4 AM |
11419 | /* Massage our args to the form they really have. */ |
11420 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11421 | info = in_arg; |
5d1634d7 | 11422 | |
abf874aa CL |
11423 | /* Fail if the target section could not be assigned to an output |
11424 | section. The user should fix his linker script. */ | |
11425 | if (stub_entry->target_section != NULL | |
11426 | && stub_entry->target_section->output_section == NULL | |
11427 | && info->non_contiguous_regions) | |
53215f21 CL |
11428 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
11429 | "Retry without --enable-non-contiguous-regions.\n"), | |
11430 | stub_entry->target_section); | |
abf874aa CL |
11431 | |
11432 | /* Same for the group. */ | |
11433 | if (stub_entry->group->stub_sec != NULL | |
11434 | && stub_entry->group->stub_sec->output_section == NULL | |
11435 | && info->non_contiguous_regions) | |
53215f21 CL |
11436 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11437 | "output section. Retry without " | |
11438 | "--enable-non-contiguous-regions.\n"), | |
11439 | stub_entry->group->stub_sec, | |
11440 | stub_entry->target_section); | |
abf874aa | 11441 | |
5d1634d7 | 11442 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11443 | if (htab == NULL) |
11444 | return FALSE; | |
5d1634d7 | 11445 | |
1aa42141 | 11446 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11447 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11448 | |
4ce794b7 | 11449 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11450 | switch (stub_entry->stub_type) |
5d1634d7 | 11451 | { |
721956f4 | 11452 | case ppc_stub_long_branch: |
ad8e1ba5 | 11453 | case ppc_stub_long_branch_r2off: |
721956f4 | 11454 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11455 | targ = (stub_entry->target_value |
6911b7dc AM |
11456 | + stub_entry->target_section->output_offset |
11457 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11458 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11459 | |
721956f4 | 11460 | /* And this is where we are coming from. */ |
1aa42141 AM |
11461 | off = (stub_entry->stub_offset |
11462 | + stub_entry->group->stub_sec->output_offset | |
11463 | + stub_entry->group->stub_sec->output_section->vma); | |
11464 | off = targ - off; | |
e86ce104 | 11465 | |
9e390558 | 11466 | p = loc; |
29433886 | 11467 | obfd = htab->params->stub_bfd; |
ac2df442 | 11468 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11469 | { |
25f53a85 | 11470 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11471 | |
a7c49797 | 11472 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11473 | { |
11474 | htab->stub_error = TRUE; | |
11475 | return FALSE; | |
11476 | } | |
29433886 | 11477 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11478 | p += 4; |
ac2df442 AM |
11479 | if (PPC_HA (r2off) != 0) |
11480 | { | |
29433886 | 11481 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
9e390558 | 11482 | p += 4; |
a7c49797 AM |
11483 | } |
11484 | if (PPC_LO (r2off) != 0) | |
11485 | { | |
29433886 | 11486 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
9e390558 | 11487 | p += 4; |
ac2df442 | 11488 | } |
9e390558 | 11489 | off -= p - loc; |
ad8e1ba5 | 11490 | } |
29433886 | 11491 | bfd_put_32 (obfd, B_DOT | (off & 0x3fffffc), p); |
9e390558 | 11492 | p += 4; |
ad8e1ba5 | 11493 | |
5c3dead3 AM |
11494 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11495 | { | |
cf97bcb0 AM |
11496 | _bfd_error_handler |
11497 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11498 | stub_entry->root.string); |
5c3dead3 AM |
11499 | htab->stub_error = TRUE; |
11500 | return FALSE; | |
11501 | } | |
ee75fd95 AM |
11502 | |
11503 | if (info->emitrelocations) | |
11504 | { | |
6f20ed8a | 11505 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11506 | if (r == NULL) |
11507 | return FALSE; | |
9e390558 | 11508 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11509 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11510 | r->r_addend = targ; |
3d58e1fc AM |
11511 | if (stub_entry->h != NULL |
11512 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
11513 | return FALSE; | |
ee75fd95 | 11514 | } |
721956f4 | 11515 | break; |
e86ce104 | 11516 | |
721956f4 | 11517 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11518 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11519 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11520 | stub_entry->root.string + 9, | |
b34976b6 | 11521 | FALSE, FALSE); |
721956f4 AM |
11522 | if (br_entry == NULL) |
11523 | { | |
cf97bcb0 AM |
11524 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11525 | stub_entry->root.string); | |
b34976b6 AM |
11526 | htab->stub_error = TRUE; |
11527 | return FALSE; | |
721956f4 AM |
11528 | } |
11529 | ||
1aa42141 | 11530 | targ = (stub_entry->target_value |
176a0d42 AM |
11531 | + stub_entry->target_section->output_offset |
11532 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11533 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11534 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11535 | |
1aa42141 | 11536 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11537 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11538 | |
f94498ff | 11539 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11540 | { |
f94498ff | 11541 | br_entry->iter = 0; |
84f5d08e | 11542 | |
f94498ff | 11543 | if (htab->relbrlt != NULL) |
84f5d08e | 11544 | { |
f94498ff AM |
11545 | /* Create a reloc for the branch lookup table entry. */ |
11546 | Elf_Internal_Rela rela; | |
11547 | bfd_byte *rl; | |
11548 | ||
11549 | rela.r_offset = (br_entry->offset | |
11550 | + htab->brlt->output_offset | |
11551 | + htab->brlt->output_section->vma); | |
11552 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11553 | rela.r_addend = targ; |
f94498ff AM |
11554 | |
11555 | rl = htab->relbrlt->contents; | |
11556 | rl += (htab->relbrlt->reloc_count++ | |
11557 | * sizeof (Elf64_External_Rela)); | |
11558 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11559 | } | |
11560 | else if (info->emitrelocations) | |
11561 | { | |
176a0d42 AM |
11562 | r = get_relocs (htab->brlt, 1); |
11563 | if (r == NULL) | |
11564 | return FALSE; | |
11565 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11566 | normal reloc processing. Symbols and offsets are not | |
11567 | translated from input file to output file form, so | |
11568 | set up the offset per the output file. */ | |
f94498ff AM |
11569 | r->r_offset = (br_entry->offset |
11570 | + htab->brlt->output_offset | |
11571 | + htab->brlt->output_section->vma); | |
11572 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11573 | r->r_addend = targ; |
84f5d08e | 11574 | } |
84f5d08e | 11575 | } |
721956f4 | 11576 | |
1aa42141 | 11577 | targ = (br_entry->offset |
176a0d42 AM |
11578 | + htab->brlt->output_offset |
11579 | + htab->brlt->output_section->vma); | |
11580 | ||
1aa42141 AM |
11581 | off = (elf_gp (info->output_bfd) |
11582 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11583 | off = targ - off; | |
721956f4 | 11584 | |
ad8e1ba5 | 11585 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11586 | { |
25f53a85 | 11587 | info->callbacks->einfo |
c1c8c1ef | 11588 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11589 | stub_entry->root.string); |
5d1634d7 | 11590 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11591 | htab->stub_error = TRUE; |
11592 | return FALSE; | |
5d1634d7 | 11593 | } |
41bd81ab | 11594 | |
176a0d42 AM |
11595 | if (info->emitrelocations) |
11596 | { | |
6f20ed8a | 11597 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11598 | if (r == NULL) |
11599 | return FALSE; | |
6f20ed8a | 11600 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11601 | if (bfd_big_endian (info->output_bfd)) |
11602 | r[0].r_offset += 2; | |
00f412ee | 11603 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11604 | r[0].r_offset += 4; |
11605 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11606 | r[0].r_addend = targ; |
176a0d42 AM |
11607 | if (PPC_HA (off) != 0) |
11608 | { | |
11609 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11610 | r[1].r_offset = r[0].r_offset + 4; | |
11611 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11612 | r[1].r_addend = r[0].r_addend; | |
11613 | } | |
11614 | } | |
11615 | ||
9e390558 | 11616 | p = loc; |
29433886 | 11617 | obfd = htab->params->stub_bfd; |
00f412ee | 11618 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11619 | { |
176a0d42 | 11620 | if (PPC_HA (off) != 0) |
ac2df442 | 11621 | { |
29433886 | 11622 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11623 | p += 4; |
29433886 | 11624 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11625 | } |
11626 | else | |
29433886 | 11627 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ad8e1ba5 AM |
11628 | } |
11629 | else | |
11630 | { | |
25f53a85 | 11631 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11632 | |
a7c49797 | 11633 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11634 | { |
11635 | htab->stub_error = TRUE; | |
11636 | return FALSE; | |
11637 | } | |
ad8e1ba5 | 11638 | |
29433886 | 11639 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11640 | p += 4; |
176a0d42 | 11641 | if (PPC_HA (off) != 0) |
ac2df442 | 11642 | { |
29433886 | 11643 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11644 | p += 4; |
29433886 | 11645 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11646 | } |
11647 | else | |
29433886 | 11648 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11649 | |
11650 | if (PPC_HA (r2off) != 0) | |
11651 | { | |
9e390558 | 11652 | p += 4; |
29433886 | 11653 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11654 | } |
11655 | if (PPC_LO (r2off) != 0) | |
11656 | { | |
9e390558 | 11657 | p += 4; |
29433886 | 11658 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11659 | } |
ad8e1ba5 | 11660 | } |
9e390558 | 11661 | p += 4; |
29433886 | 11662 | bfd_put_32 (obfd, MTCTR_R12, p); |
9e390558 | 11663 | p += 4; |
29433886 | 11664 | bfd_put_32 (obfd, BCTR, p); |
407aa07c | 11665 | p += 4; |
721956f4 | 11666 | break; |
5d1634d7 | 11667 | |
05d0e962 AM |
11668 | case ppc_stub_long_branch_notoc: |
11669 | case ppc_stub_long_branch_both: | |
11670 | case ppc_stub_plt_branch_notoc: | |
11671 | case ppc_stub_plt_branch_both: | |
11672 | case ppc_stub_plt_call_notoc: | |
11673 | case ppc_stub_plt_call_both: | |
11674 | p = loc; | |
f891966f | 11675 | off = (stub_entry->stub_offset |
05d0e962 AM |
11676 | + stub_entry->group->stub_sec->output_offset |
11677 | + stub_entry->group->stub_sec->output_section->vma); | |
29433886 AM |
11678 | obfd = htab->params->stub_bfd; |
11679 | is_tga = ((stub_entry->stub_type == ppc_stub_plt_call_notoc | |
11680 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
12cf8b93 | 11681 | && stub_entry->h != NULL |
29433886 AM |
11682 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
11683 | && htab->params->tls_get_addr_opt); | |
11684 | if (is_tga) | |
11685 | { | |
11686 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
11687 | off += p - loc; | |
11688 | } | |
05d0e962 AM |
11689 | if (stub_entry->stub_type == ppc_stub_long_branch_both |
11690 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11691 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11692 | { | |
11693 | off += 4; | |
29433886 | 11694 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
05d0e962 AM |
11695 | p += 4; |
11696 | } | |
11697 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11698 | { | |
11699 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11700 | if (targ >= (bfd_vma) -2) | |
11701 | abort (); | |
11702 | ||
11703 | plt = htab->elf.splt; | |
11704 | if (!htab->elf.dynamic_sections_created | |
11705 | || stub_entry->h == NULL | |
11706 | || stub_entry->h->elf.dynindx == -1) | |
11707 | { | |
11708 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11709 | plt = htab->elf.iplt; | |
11710 | else | |
11711 | plt = htab->pltlocal; | |
11712 | } | |
11713 | targ += plt->output_offset + plt->output_section->vma; | |
11714 | } | |
11715 | else | |
11716 | targ = (stub_entry->target_value | |
11717 | + stub_entry->target_section->output_offset | |
11718 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11719 | odd = off & 4; |
05d0e962 | 11720 | off = targ - off; |
f891966f | 11721 | |
3d58e1fc AM |
11722 | relp = p; |
11723 | num_rel = 0; | |
e10a07b3 | 11724 | if (htab->params->power10_stubs != 0) |
04bdff6a AM |
11725 | { |
11726 | bfd_boolean load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; | |
29433886 | 11727 | p = build_power10_offset (obfd, p, off, odd, load); |
04bdff6a AM |
11728 | } |
11729 | else | |
11730 | { | |
29433886 AM |
11731 | if (htab->glink_eh_frame != NULL |
11732 | && htab->glink_eh_frame->size != 0) | |
11733 | { | |
11734 | bfd_byte *base, *eh; | |
11735 | unsigned int lr_used, delta; | |
11736 | ||
11737 | base = (htab->glink_eh_frame->contents | |
11738 | + stub_entry->group->eh_base + 17); | |
11739 | eh = base + stub_entry->group->eh_size; | |
11740 | lr_used = stub_entry->stub_offset + (p - loc) + 8; | |
11741 | delta = lr_used - stub_entry->group->lr_restore; | |
11742 | stub_entry->group->lr_restore = lr_used + 8; | |
11743 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11744 | *eh++ = DW_CFA_register; | |
11745 | *eh++ = 65; | |
11746 | *eh++ = 12; | |
11747 | *eh++ = DW_CFA_advance_loc + 2; | |
11748 | *eh++ = DW_CFA_restore_extended; | |
11749 | *eh++ = 65; | |
11750 | stub_entry->group->eh_size = eh - base; | |
11751 | } | |
11752 | ||
04bdff6a AM |
11753 | /* The notoc stubs calculate their target (either a PLT entry or |
11754 | the global entry point of a function) relative to the PC | |
11755 | returned by the "bcl" two instructions past the start of the | |
11756 | sequence emitted by build_offset. The offset is therefore 8 | |
11757 | less than calculated from the start of the sequence. */ | |
11758 | off -= 8; | |
29433886 | 11759 | p = build_offset (obfd, p, off, |
04bdff6a AM |
11760 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); |
11761 | } | |
11762 | ||
f891966f | 11763 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11764 | { |
f891966f | 11765 | bfd_vma from; |
3d58e1fc | 11766 | num_rel = 1; |
f891966f AM |
11767 | from = (stub_entry->stub_offset |
11768 | + stub_entry->group->stub_sec->output_offset | |
11769 | + stub_entry->group->stub_sec->output_section->vma | |
11770 | + (p - loc)); | |
29433886 | 11771 | bfd_put_32 (obfd, B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11772 | } |
11773 | else | |
11774 | { | |
29433886 | 11775 | bfd_put_32 (obfd, MTCTR_R12, p); |
05d0e962 | 11776 | p += 4; |
29433886 | 11777 | bfd_put_32 (obfd, BCTR, p); |
05d0e962 AM |
11778 | } |
11779 | p += 4; | |
df136d64 | 11780 | |
29433886 AM |
11781 | if (is_tga) |
11782 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
11783 | ||
3d58e1fc AM |
11784 | if (info->emitrelocations) |
11785 | { | |
04bdff6a | 11786 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
e10a07b3 | 11787 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11788 | num_rel += num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
11789 | else |
11790 | { | |
11791 | num_rel += num_relocs_for_offset (off); | |
11792 | roff += 16; | |
11793 | } | |
3d58e1fc AM |
11794 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11795 | if (r == NULL) | |
11796 | return FALSE; | |
e10a07b3 | 11797 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11798 | r = emit_relocs_for_power10_offset (info, r, roff, targ, off, odd); |
04bdff6a AM |
11799 | else |
11800 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11801 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11802 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11803 | { | |
11804 | ++r; | |
11805 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11806 | r->r_offset = roff; | |
11807 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11808 | r->r_addend = targ; | |
11809 | if (stub_entry->h != NULL | |
11810 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11811 | return FALSE; | |
11812 | } | |
11813 | } | |
05d0e962 AM |
11814 | break; |
11815 | ||
721956f4 | 11816 | case ppc_stub_plt_call: |
794e51c0 | 11817 | case ppc_stub_plt_call_r2save: |
e054468f | 11818 | if (stub_entry->h != NULL |
b31867b6 AM |
11819 | && stub_entry->h->is_func_descriptor |
11820 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11821 | { |
b31867b6 AM |
11822 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11823 | ||
11824 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11825 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11826 | if (fh->elf.root.type == bfd_link_hash_undefined |
11827 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11828 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11829 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11830 | } |
11831 | ||
721956f4 | 11832 | /* Now build the stub. */ |
1aa42141 AM |
11833 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11834 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11835 | abort (); |
11836 | ||
33e44f2e | 11837 | plt = htab->elf.splt; |
25f23106 AM |
11838 | if (!htab->elf.dynamic_sections_created |
11839 | || stub_entry->h == NULL | |
11840 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11841 | { |
11842 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11843 | plt = htab->elf.iplt; | |
11844 | else | |
11845 | plt = htab->pltlocal; | |
11846 | } | |
1aa42141 | 11847 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11848 | |
1aa42141 AM |
11849 | off = (elf_gp (info->output_bfd) |
11850 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11851 | off = targ - off; | |
721956f4 | 11852 | |
ad8e1ba5 | 11853 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11854 | { |
25f53a85 | 11855 | info->callbacks->einfo |
695344c0 | 11856 | /* xgettext:c-format */ |
c1c8c1ef | 11857 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11858 | stub_entry->h != NULL |
11859 | ? stub_entry->h->elf.root.root.string | |
11860 | : "<local sym>"); | |
721956f4 | 11861 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11862 | htab->stub_error = TRUE; |
11863 | return FALSE; | |
721956f4 AM |
11864 | } |
11865 | ||
176a0d42 AM |
11866 | r = NULL; |
11867 | if (info->emitrelocations) | |
11868 | { | |
6f20ed8a | 11869 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11870 | ((PPC_HA (off) != 0) |
11871 | + (htab->opd_abi | |
e7d1c40c | 11872 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11873 | && PPC_HA (off + 16) == PPC_HA (off)) |
11874 | : 1))); | |
176a0d42 AM |
11875 | if (r == NULL) |
11876 | return FALSE; | |
6f20ed8a | 11877 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11878 | if (bfd_big_endian (info->output_bfd)) |
11879 | r[0].r_offset += 2; | |
1aa42141 | 11880 | r[0].r_addend = targ; |
176a0d42 | 11881 | } |
29433886 AM |
11882 | p = loc; |
11883 | obfd = htab->params->stub_bfd; | |
11884 | is_tga = (stub_entry->h != NULL | |
11885 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
11886 | && htab->params->tls_get_addr_opt); | |
11887 | if (is_tga) | |
11888 | { | |
11889 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
11890 | if (r != NULL) | |
11891 | r[0].r_offset += p - loc; | |
11892 | } | |
11893 | p = build_plt_stub (htab, stub_entry, p, off, r); | |
11894 | if (is_tga) | |
11895 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
721956f4 AM |
11896 | break; |
11897 | ||
a4b6fadd AM |
11898 | case ppc_stub_save_res: |
11899 | return TRUE; | |
11900 | ||
721956f4 AM |
11901 | default: |
11902 | BFD_FAIL (); | |
b34976b6 | 11903 | return FALSE; |
721956f4 AM |
11904 | } |
11905 | ||
1aa42141 | 11906 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11907 | |
e7d1c40c | 11908 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11909 | { |
11910 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11911 | size_t len1, len2; |
11912 | char *name; | |
11913 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11914 | "long_branch", |
11915 | "long_branch", | |
3f6ff479 AM |
11916 | "long_branch", |
11917 | "plt_branch", | |
ee75fd95 | 11918 | "plt_branch", |
05d0e962 AM |
11919 | "plt_branch", |
11920 | "plt_branch", | |
11921 | "plt_call", | |
11922 | "plt_call", | |
794e51c0 | 11923 | "plt_call", |
ee75fd95 AM |
11924 | "plt_call" }; |
11925 | ||
11926 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11927 | len2 = strlen (stub_entry->root.string); | |
11928 | name = bfd_malloc (len1 + len2 + 2); | |
11929 | if (name == NULL) | |
11930 | return FALSE; | |
11931 | memcpy (name, stub_entry->root.string, 9); | |
11932 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11933 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11934 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11935 | if (h == NULL) |
11936 | return FALSE; | |
11937 | if (h->root.type == bfd_link_hash_new) | |
11938 | { | |
11939 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11940 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11941 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11942 | h->ref_regular = 1; |
11943 | h->def_regular = 1; | |
11944 | h->ref_regular_nonweak = 1; | |
11945 | h->forced_local = 1; | |
11946 | h->non_elf = 0; | |
2ec55de3 | 11947 | h->root.linker_def = 1; |
97b639ba AM |
11948 | } |
11949 | } | |
11950 | ||
b34976b6 | 11951 | return TRUE; |
721956f4 AM |
11952 | } |
11953 | ||
11954 | /* As above, but don't actually build the stub. Just bump offset so | |
11955 | we know stub section sizes, and select plt_branch stubs where | |
11956 | long_branch stubs won't do. */ | |
11957 | ||
b34976b6 | 11958 | static bfd_boolean |
4ce794b7 | 11959 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11960 | { |
11961 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11962 | struct bfd_link_info *info; |
721956f4 | 11963 | struct ppc_link_hash_table *htab; |
f891966f AM |
11964 | asection *plt; |
11965 | bfd_vma targ, off, r2off; | |
04bdff6a | 11966 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
11967 | |
11968 | /* Massage our args to the form they really have. */ | |
11969 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11970 | info = in_arg; |
11971 | ||
11972 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11973 | if (htab == NULL) |
11974 | return FALSE; | |
721956f4 | 11975 | |
abf874aa CL |
11976 | /* Fail if the target section could not be assigned to an output |
11977 | section. The user should fix his linker script. */ | |
11978 | if (stub_entry->target_section != NULL | |
11979 | && stub_entry->target_section->output_section == NULL | |
11980 | && info->non_contiguous_regions) | |
53215f21 CL |
11981 | info->callbacks->einfo (_("%F%P: Could not assign %pA to an output section. " |
11982 | "Retry without --enable-non-contiguous-regions.\n"), | |
11983 | stub_entry->target_section); | |
abf874aa CL |
11984 | |
11985 | /* Same for the group. */ | |
11986 | if (stub_entry->group->stub_sec != NULL | |
11987 | && stub_entry->group->stub_sec->output_section == NULL | |
11988 | && info->non_contiguous_regions) | |
53215f21 CL |
11989 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11990 | "output section. Retry without " | |
11991 | "--enable-non-contiguous-regions.\n"), | |
11992 | stub_entry->group->stub_sec, | |
11993 | stub_entry->target_section); | |
abf874aa | 11994 | |
1aa42141 AM |
11995 | /* Make a note of the offset within the stubs for this entry. */ |
11996 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11997 | ||
a4b6fadd AM |
11998 | if (stub_entry->h != NULL |
11999 | && stub_entry->h->save_res | |
12000 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
12001 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
12002 | { | |
12003 | /* Don't make stubs to out-of-line register save/restore | |
12004 | functions. Instead, emit copies of the functions. */ | |
12005 | stub_entry->group->needs_save_res = 1; | |
12006 | stub_entry->stub_type = ppc_stub_save_res; | |
12007 | return TRUE; | |
12008 | } | |
12009 | ||
f891966f | 12010 | switch (stub_entry->stub_type) |
721956f4 | 12011 | { |
f891966f AM |
12012 | case ppc_stub_plt_branch: |
12013 | case ppc_stub_plt_branch_r2off: | |
12014 | /* Reset the stub type from the plt branch variant in case we now | |
12015 | can reach with a shorter stub. */ | |
12016 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12017 | /* Fall through. */ | |
12018 | case ppc_stub_long_branch: | |
12019 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
12020 | targ = (stub_entry->target_value |
12021 | + stub_entry->target_section->output_offset | |
12022 | + stub_entry->target_section->output_section->vma); | |
f891966f | 12023 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
12024 | off = (stub_entry->stub_offset |
12025 | + stub_entry->group->stub_sec->output_offset | |
12026 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 12027 | |
ad8e1ba5 | 12028 | size = 4; |
f891966f | 12029 | r2off = 0; |
ad8e1ba5 AM |
12030 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
12031 | { | |
25f53a85 | 12032 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 12033 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
12034 | { |
12035 | htab->stub_error = TRUE; | |
12036 | return FALSE; | |
12037 | } | |
a7c49797 | 12038 | size = 8; |
ac2df442 | 12039 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
12040 | size += 4; |
12041 | if (PPC_LO (r2off) != 0) | |
12042 | size += 4; | |
1aa42141 | 12043 | off += size - 4; |
ad8e1ba5 | 12044 | } |
1aa42141 | 12045 | off = targ - off; |
ad8e1ba5 | 12046 | |
f891966f AM |
12047 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
12048 | Do the same for -R objects without function descriptors. */ | |
12049 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
12050 | && r2off == 0 | |
12051 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
12052 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 12053 | { |
f891966f | 12054 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 12055 | |
f891966f AM |
12056 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
12057 | stub_entry->root.string + 9, | |
12058 | TRUE, FALSE); | |
12059 | if (br_entry == NULL) | |
721956f4 | 12060 | { |
f891966f AM |
12061 | _bfd_error_handler (_("can't build branch stub `%s'"), |
12062 | stub_entry->root.string); | |
12063 | htab->stub_error = TRUE; | |
12064 | return FALSE; | |
721956f4 AM |
12065 | } |
12066 | ||
f891966f | 12067 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 12068 | { |
f891966f AM |
12069 | br_entry->iter = htab->stub_iteration; |
12070 | br_entry->offset = htab->brlt->size; | |
12071 | htab->brlt->size += 8; | |
63bc6f6c | 12072 | |
f891966f AM |
12073 | if (htab->relbrlt != NULL) |
12074 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
12075 | else if (info->emitrelocations) | |
84f5d08e | 12076 | { |
f891966f AM |
12077 | htab->brlt->reloc_count += 1; |
12078 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 12079 | } |
f891966f | 12080 | } |
ac2df442 | 12081 | |
f891966f AM |
12082 | targ = (br_entry->offset |
12083 | + htab->brlt->output_offset | |
12084 | + htab->brlt->output_section->vma); | |
12085 | off = (elf_gp (info->output_bfd) | |
12086 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12087 | off = targ - off; | |
176a0d42 | 12088 | |
f891966f AM |
12089 | if (info->emitrelocations) |
12090 | { | |
12091 | stub_entry->group->stub_sec->reloc_count | |
12092 | += 1 + (PPC_HA (off) != 0); | |
12093 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12094 | } | |
05d0e962 | 12095 | |
f891966f AM |
12096 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
12097 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
12098 | { | |
12099 | size = 12; | |
12100 | if (PPC_HA (off) != 0) | |
12101 | size = 16; | |
ac2df442 | 12102 | } |
f891966f | 12103 | else |
ac2df442 | 12104 | { |
f891966f AM |
12105 | size = 16; |
12106 | if (PPC_HA (off) != 0) | |
12107 | size += 4; | |
12108 | ||
12109 | if (PPC_HA (r2off) != 0) | |
12110 | size += 4; | |
12111 | if (PPC_LO (r2off) != 0) | |
12112 | size += 4; | |
ac2df442 | 12113 | } |
721956f4 | 12114 | } |
f891966f AM |
12115 | else if (info->emitrelocations) |
12116 | { | |
12117 | stub_entry->group->stub_sec->reloc_count += 1; | |
12118 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12119 | } | |
12120 | break; | |
12121 | ||
12122 | case ppc_stub_plt_branch_notoc: | |
12123 | case ppc_stub_plt_branch_both: | |
12124 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12125 | /* Fall through. */ | |
12126 | case ppc_stub_long_branch_notoc: | |
12127 | case ppc_stub_long_branch_both: | |
12128 | off = (stub_entry->stub_offset | |
12129 | + stub_entry->group->stub_sec->output_offset | |
12130 | + stub_entry->group->stub_sec->output_section->vma); | |
12131 | size = 0; | |
12132 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12133 | size = 4; | |
12134 | off += size; | |
12135 | targ = (stub_entry->target_value | |
12136 | + stub_entry->target_section->output_offset | |
12137 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12138 | odd = off & 4; |
f891966f AM |
12139 | off = targ - off; |
12140 | ||
3d58e1fc AM |
12141 | if (info->emitrelocations) |
12142 | { | |
04bdff6a | 12143 | unsigned int num_rel; |
e10a07b3 | 12144 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12145 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12146 | else |
12147 | num_rel = num_relocs_for_offset (off - 8); | |
12148 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12149 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12150 | } | |
12151 | ||
e10a07b3 | 12152 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12153 | extra = size_power10_offset (off, odd); |
04bdff6a AM |
12154 | else |
12155 | extra = size_offset (off - 8); | |
f891966f AM |
12156 | /* Include branch insn plus those in the offset sequence. */ |
12157 | size += 4 + extra; | |
12158 | /* The branch insn is at the end, or "extra" bytes along. So | |
12159 | its offset will be "extra" bytes less that that already | |
12160 | calculated. */ | |
12161 | off -= extra; | |
12162 | ||
e10a07b3 | 12163 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12164 | { |
12165 | /* After the bcl, lr has been modified so we need to emit | |
12166 | .eh_frame info saying the return address is in r12. */ | |
12167 | lr_used = stub_entry->stub_offset + 8; | |
12168 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12169 | lr_used += 4; | |
12170 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12171 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12172 | DW_CFA_restore_extended 65. */ | |
12173 | delta = lr_used - stub_entry->group->lr_restore; | |
12174 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12175 | stub_entry->group->lr_restore = lr_used + 8; | |
12176 | } | |
f891966f AM |
12177 | |
12178 | /* If the branch can't reach, use a plt_branch. */ | |
12179 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
12180 | { | |
12181 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
12182 | - ppc_stub_long_branch_notoc); | |
12183 | size += 4; | |
12184 | } | |
3d58e1fc AM |
12185 | else if (info->emitrelocations) |
12186 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
12187 | break; |
12188 | ||
12189 | case ppc_stub_plt_call_notoc: | |
12190 | case ppc_stub_plt_call_both: | |
29433886 | 12191 | lr_used = 0; |
12cf8b93 AM |
12192 | if (stub_entry->h != NULL |
12193 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
29433886 AM |
12194 | && htab->params->tls_get_addr_opt) |
12195 | { | |
12196 | lr_used += 7 * 4; | |
12197 | if (!htab->params->no_tls_get_addr_regsave) | |
12198 | lr_used += 11 * 4; | |
12199 | else if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12200 | lr_used += 2 * 4; | |
12201 | } | |
f891966f | 12202 | if (stub_entry->stub_type == ppc_stub_plt_call_both) |
29433886 | 12203 | lr_used += 4; |
f891966f AM |
12204 | targ = stub_entry->plt_ent->plt.offset & ~1; |
12205 | if (targ >= (bfd_vma) -2) | |
12206 | abort (); | |
12207 | ||
12208 | plt = htab->elf.splt; | |
12209 | if (!htab->elf.dynamic_sections_created | |
12210 | || stub_entry->h == NULL | |
12211 | || stub_entry->h->elf.dynindx == -1) | |
12212 | { | |
12213 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12214 | plt = htab->elf.iplt; | |
12215 | else | |
12216 | plt = htab->pltlocal; | |
12217 | } | |
12218 | targ += plt->output_offset + plt->output_section->vma; | |
29433886 AM |
12219 | off = (stub_entry->stub_offset |
12220 | + stub_entry->group->stub_sec->output_offset | |
12221 | + stub_entry->group->stub_sec->output_section->vma | |
12222 | + lr_used); | |
04bdff6a | 12223 | odd = off & 4; |
f891966f AM |
12224 | off = targ - off; |
12225 | ||
12226 | if (htab->params->plt_stub_align != 0) | |
12227 | { | |
29433886 | 12228 | unsigned pad = plt_stub_pad (htab, stub_entry, off, odd); |
f891966f AM |
12229 | |
12230 | stub_entry->group->stub_sec->size += pad; | |
12231 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12232 | off -= pad; | |
29433886 | 12233 | odd ^= pad & 4; |
f891966f AM |
12234 | } |
12235 | ||
3d58e1fc AM |
12236 | if (info->emitrelocations) |
12237 | { | |
04bdff6a | 12238 | unsigned int num_rel; |
e10a07b3 | 12239 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12240 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12241 | else |
12242 | num_rel = num_relocs_for_offset (off - 8); | |
12243 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12244 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12245 | } | |
12246 | ||
29433886 | 12247 | size = plt_stub_size (htab, stub_entry, off, odd); |
f891966f | 12248 | |
e10a07b3 | 12249 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12250 | { |
12251 | /* After the bcl, lr has been modified so we need to emit | |
12252 | .eh_frame info saying the return address is in r12. */ | |
29433886 | 12253 | lr_used += stub_entry->stub_offset + 8; |
04bdff6a AM |
12254 | /* The eh_frame info will consist of a DW_CFA_advance_loc or |
12255 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12256 | DW_CFA_restore_extended 65. */ | |
12257 | delta = lr_used - stub_entry->group->lr_restore; | |
12258 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12259 | stub_entry->group->lr_restore = lr_used + 8; | |
12260 | } | |
29433886 AM |
12261 | if ((stub_entry->stub_type == ppc_stub_plt_call_notoc |
12262 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
12cf8b93 | 12263 | && stub_entry->h != NULL |
29433886 AM |
12264 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
12265 | && htab->params->tls_get_addr_opt) | |
12266 | { | |
12267 | if (!htab->params->no_tls_get_addr_regsave) | |
12268 | { | |
12269 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12270 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12271 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12272 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12273 | stub_entry->group->lr_restore | |
12274 | = stub_entry->stub_offset + size - 4; | |
12275 | } | |
12276 | else if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12277 | { | |
12278 | lr_used = stub_entry->stub_offset + size - 20; | |
12279 | delta = lr_used - stub_entry->group->lr_restore; | |
12280 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12281 | stub_entry->group->lr_restore | |
12282 | = stub_entry->stub_offset + size - 4; | |
12283 | } | |
12284 | } | |
f891966f AM |
12285 | break; |
12286 | ||
12287 | case ppc_stub_plt_call: | |
12288 | case ppc_stub_plt_call_r2save: | |
12289 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
12290 | if (targ >= (bfd_vma) -2) | |
12291 | abort (); | |
12292 | plt = htab->elf.splt; | |
12293 | if (!htab->elf.dynamic_sections_created | |
12294 | || stub_entry->h == NULL | |
12295 | || stub_entry->h->elf.dynindx == -1) | |
12296 | { | |
12297 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12298 | plt = htab->elf.iplt; | |
12299 | else | |
12300 | plt = htab->pltlocal; | |
12301 | } | |
12302 | targ += plt->output_offset + plt->output_section->vma; | |
12303 | ||
12304 | off = (elf_gp (info->output_bfd) | |
12305 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12306 | off = targ - off; | |
12307 | ||
12308 | if (htab->params->plt_stub_align != 0) | |
12309 | { | |
29433886 | 12310 | unsigned pad = plt_stub_pad (htab, stub_entry, off, 0); |
f891966f AM |
12311 | |
12312 | stub_entry->group->stub_sec->size += pad; | |
12313 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12314 | } | |
12315 | ||
12316 | if (info->emitrelocations) | |
12317 | { | |
12318 | stub_entry->group->stub_sec->reloc_count | |
12319 | += ((PPC_HA (off) != 0) | |
12320 | + (htab->opd_abi | |
12321 | ? 2 + (htab->params->plt_static_chain | |
12322 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12323 | : 1)); | |
12324 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12325 | } | |
12326 | ||
29433886 | 12327 | size = plt_stub_size (htab, stub_entry, off, 0); |
f891966f AM |
12328 | |
12329 | if (stub_entry->h != NULL | |
ed7007c1 | 12330 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
f891966f AM |
12331 | && htab->params->tls_get_addr_opt |
12332 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
12333 | { | |
29433886 AM |
12334 | if (!htab->params->no_tls_get_addr_regsave) |
12335 | { | |
12336 | /* Adjustments to r1 need to be described. */ | |
12337 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12338 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12339 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12340 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12341 | } | |
12342 | else | |
9e7028aa AM |
12343 | { |
12344 | lr_used = stub_entry->stub_offset + size - 20; | |
12345 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
12346 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12347 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12348 | delta = lr_used - stub_entry->group->lr_restore; | |
12349 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12350 | } | |
29433886 | 12351 | stub_entry->group->lr_restore = stub_entry->stub_offset + size - 4; |
f891966f AM |
12352 | } |
12353 | break; | |
12354 | ||
12355 | default: | |
12356 | BFD_FAIL (); | |
12357 | return FALSE; | |
721956f4 AM |
12358 | } |
12359 | ||
6f20ed8a | 12360 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 12361 | return TRUE; |
721956f4 AM |
12362 | } |
12363 | ||
12364 | /* Set up various things so that we can make a list of input sections | |
12365 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12366 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12367 | |
12368 | int | |
e7d1c40c | 12369 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12370 | { |
6f20ed8a | 12371 | unsigned int id; |
986f0783 | 12372 | size_t amt; |
721956f4 AM |
12373 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12374 | ||
4dfe6ac6 NC |
12375 | if (htab == NULL) |
12376 | return -1; | |
4c52953f | 12377 | |
7cf7fcc8 | 12378 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12379 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12380 | htab->sec_info = bfd_zmalloc (amt); | |
12381 | if (htab->sec_info == NULL) | |
721956f4 AM |
12382 | return -1; |
12383 | ||
3d6f9012 AM |
12384 | /* Set toc_off for com, und, abs and ind sections. */ |
12385 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12386 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12387 | |
721956f4 AM |
12388 | return 1; |
12389 | } | |
12390 | ||
927be08e AM |
12391 | /* Set up for first pass at multitoc partitioning. */ |
12392 | ||
12393 | void | |
12394 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12395 | { | |
12396 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12397 | ||
1c865ab2 | 12398 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12399 | htab->toc_bfd = NULL; |
12400 | htab->toc_first_sec = NULL; | |
12401 | } | |
12402 | ||
e717da7e AM |
12403 | /* The linker repeatedly calls this function for each TOC input section |
12404 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12405 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12406 | |
927be08e | 12407 | bfd_boolean |
4ce794b7 | 12408 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12409 | { |
12410 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12411 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12412 | |
4dfe6ac6 NC |
12413 | if (htab == NULL) |
12414 | return FALSE; | |
12415 | ||
927be08e | 12416 | if (!htab->second_toc_pass) |
4c52953f | 12417 | { |
927be08e | 12418 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
12419 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
12420 | ||
12421 | if (new_bfd) | |
bf102f86 AM |
12422 | { |
12423 | htab->toc_bfd = isec->owner; | |
12424 | htab->toc_first_sec = isec; | |
12425 | } | |
927be08e | 12426 | |
bf102f86 AM |
12427 | addr = isec->output_offset + isec->output_section->vma; |
12428 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12429 | limit = 0x80008000; |
12430 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12431 | limit = 0x10000; | |
12432 | if (off + isec->size > limit) | |
bf102f86 AM |
12433 | { |
12434 | addr = (htab->toc_first_sec->output_offset | |
12435 | + htab->toc_first_sec->output_section->vma); | |
12436 | htab->toc_curr = addr; | |
a27e685f | 12437 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12438 | } |
99877b66 | 12439 | |
927be08e AM |
12440 | /* toc_curr is the base address of this toc group. Set elf_gp |
12441 | for the input section to be the offset relative to the | |
12442 | output toc base plus 0x8000. Making the input elf_gp an | |
12443 | offset allows us to move the toc as a whole without | |
12444 | recalculating input elf_gp. */ | |
06bcf541 | 12445 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12446 | off += TOC_BASE_OFF; |
12447 | ||
12448 | /* Die if someone uses a linker script that doesn't keep input | |
12449 | file .toc and .got together. */ | |
a4fd3de5 AM |
12450 | if (new_bfd |
12451 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
12452 | && elf_gp (isec->owner) != off) |
12453 | return FALSE; | |
12454 | ||
12455 | elf_gp (isec->owner) = off; | |
12456 | return TRUE; | |
4c52953f | 12457 | } |
927be08e AM |
12458 | |
12459 | /* During the second pass toc_first_sec points to the start of | |
12460 | a toc group, and toc_curr is used to track the old elf_gp. | |
12461 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12462 | if (htab->toc_bfd == isec->owner) | |
12463 | return TRUE; | |
12464 | htab->toc_bfd = isec->owner; | |
12465 | ||
12466 | if (htab->toc_first_sec == NULL | |
12467 | || htab->toc_curr != elf_gp (isec->owner)) | |
12468 | { | |
12469 | htab->toc_curr = elf_gp (isec->owner); | |
12470 | htab->toc_first_sec = isec; | |
12471 | } | |
12472 | addr = (htab->toc_first_sec->output_offset | |
12473 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12474 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12475 | elf_gp (isec->owner) = off; |
12476 | ||
12477 | return TRUE; | |
ad8e1ba5 AM |
12478 | } |
12479 | ||
927be08e AM |
12480 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12481 | symbol H. */ | |
12482 | ||
12483 | static bfd_boolean | |
12484 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12485 | { | |
12486 | if (h->root.type == bfd_link_hash_indirect) | |
12487 | return TRUE; | |
12488 | ||
927be08e AM |
12489 | merge_got_entries (&h->got.glist); |
12490 | ||
12491 | return TRUE; | |
12492 | } | |
12493 | ||
12494 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12495 | symbol H. */ | |
12496 | ||
12497 | static bfd_boolean | |
12498 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
12499 | { | |
12500 | struct got_entry *gent; | |
12501 | ||
12502 | if (h->root.type == bfd_link_hash_indirect) | |
12503 | return TRUE; | |
12504 | ||
927be08e AM |
12505 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12506 | if (!gent->is_indirect) | |
12507 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
12508 | return TRUE; | |
12509 | } | |
12510 | ||
12511 | /* Called on the first multitoc pass after the last call to | |
12512 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12513 | entries. */ | |
12514 | ||
12515 | bfd_boolean | |
12516 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
12517 | { |
12518 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
12519 | struct bfd *ibfd, *ibfd2; |
12520 | bfd_boolean done_something; | |
12521 | ||
12522 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12523 | |
7865406b AM |
12524 | if (!htab->do_multi_toc) |
12525 | return FALSE; | |
12526 | ||
d0fae19d | 12527 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12528 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12529 | ||
12530 | /* And tlsld_got. */ | |
c72f2fb2 | 12531 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12532 | { |
12533 | struct got_entry *ent, *ent2; | |
12534 | ||
12535 | if (!is_ppc64_elf (ibfd)) | |
12536 | continue; | |
12537 | ||
12538 | ent = ppc64_tlsld_got (ibfd); | |
12539 | if (!ent->is_indirect | |
12540 | && ent->got.offset != (bfd_vma) -1) | |
12541 | { | |
c72f2fb2 | 12542 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12543 | { |
12544 | if (!is_ppc64_elf (ibfd2)) | |
12545 | continue; | |
12546 | ||
12547 | ent2 = ppc64_tlsld_got (ibfd2); | |
12548 | if (!ent2->is_indirect | |
12549 | && ent2->got.offset != (bfd_vma) -1 | |
12550 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12551 | { | |
12552 | ent2->is_indirect = TRUE; | |
12553 | ent2->got.ent = ent; | |
12554 | } | |
12555 | } | |
12556 | } | |
12557 | } | |
12558 | ||
12559 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12560 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12561 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12562 | htab->got_reli_size = 0; |
12563 | ||
c72f2fb2 | 12564 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12565 | { |
12566 | asection *got, *relgot; | |
12567 | ||
12568 | if (!is_ppc64_elf (ibfd)) | |
12569 | continue; | |
12570 | ||
12571 | got = ppc64_elf_tdata (ibfd)->got; | |
12572 | if (got != NULL) | |
12573 | { | |
12574 | got->rawsize = got->size; | |
12575 | got->size = 0; | |
12576 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12577 | relgot->rawsize = relgot->size; | |
12578 | relgot->size = 0; | |
12579 | } | |
12580 | } | |
12581 | ||
12582 | /* Now reallocate the got, local syms first. We don't need to | |
12583 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12584 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12585 | { |
12586 | struct got_entry **lgot_ents; | |
12587 | struct got_entry **end_lgot_ents; | |
12588 | struct plt_entry **local_plt; | |
12589 | struct plt_entry **end_local_plt; | |
f961d9dd | 12590 | unsigned char *lgot_masks; |
927be08e AM |
12591 | bfd_size_type locsymcount; |
12592 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12593 | asection *s; |
927be08e AM |
12594 | |
12595 | if (!is_ppc64_elf (ibfd)) | |
12596 | continue; | |
12597 | ||
12598 | lgot_ents = elf_local_got_ents (ibfd); | |
12599 | if (!lgot_ents) | |
12600 | continue; | |
12601 | ||
12602 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12603 | locsymcount = symtab_hdr->sh_info; | |
12604 | end_lgot_ents = lgot_ents + locsymcount; | |
12605 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12606 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12607 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12608 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12609 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12610 | { | |
12611 | struct got_entry *ent; | |
12612 | ||
12613 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12614 | { |
19e08130 AM |
12615 | unsigned int ent_size = 8; |
12616 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12617 | ||
d0fae19d AM |
12618 | ent->got.offset = s->size; |
12619 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12620 | { |
19e08130 AM |
12621 | ent_size *= 2; |
12622 | rel_size *= 2; | |
12623 | } | |
12624 | s->size += ent_size; | |
37da22e5 | 12625 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12626 | { |
33e44f2e | 12627 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12628 | htab->got_reli_size += rel_size; |
12629 | } | |
6a3858a6 | 12630 | else if (bfd_link_pic (info) |
f749f26e | 12631 | && !(ent->tls_type != 0 |
6a3858a6 | 12632 | && bfd_link_executable (info))) |
19e08130 AM |
12633 | { |
12634 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12635 | srel->size += rel_size; | |
d0fae19d AM |
12636 | } |
12637 | } | |
927be08e AM |
12638 | } |
12639 | } | |
12640 | ||
12641 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12642 | ||
c72f2fb2 | 12643 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12644 | { |
12645 | struct got_entry *ent; | |
12646 | ||
12647 | if (!is_ppc64_elf (ibfd)) | |
12648 | continue; | |
12649 | ||
12650 | ent = ppc64_tlsld_got (ibfd); | |
12651 | if (!ent->is_indirect | |
12652 | && ent->got.offset != (bfd_vma) -1) | |
12653 | { | |
12654 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12655 | ent->got.offset = s->size; | |
12656 | s->size += 16; | |
f749f26e | 12657 | if (bfd_link_dll (info)) |
927be08e AM |
12658 | { |
12659 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12660 | srel->size += sizeof (Elf64_External_Rela); | |
12661 | } | |
12662 | } | |
12663 | } | |
12664 | ||
33e44f2e | 12665 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12666 | if (!done_something) |
c72f2fb2 | 12667 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12668 | { |
12669 | asection *got; | |
12670 | ||
12671 | if (!is_ppc64_elf (ibfd)) | |
12672 | continue; | |
12673 | ||
12674 | got = ppc64_elf_tdata (ibfd)->got; | |
12675 | if (got != NULL) | |
12676 | { | |
12677 | done_something = got->rawsize != got->size; | |
12678 | if (done_something) | |
12679 | break; | |
12680 | } | |
12681 | } | |
12682 | ||
12683 | if (done_something) | |
e7d1c40c | 12684 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12685 | |
12686 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12687 | on input sections. */ | |
12688 | htab->toc_bfd = NULL; | |
12689 | htab->toc_first_sec = NULL; | |
12690 | htab->second_toc_pass = TRUE; | |
12691 | return done_something; | |
12692 | } | |
12693 | ||
12694 | /* Called after second pass of multitoc partitioning. */ | |
12695 | ||
12696 | void | |
12697 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12698 | { | |
12699 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12700 | ||
12701 | /* After the second pass, toc_curr tracks the TOC offset used | |
12702 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12703 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12704 | } |
12705 | ||
9b5ecbd0 AM |
12706 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12707 | calls, then there's no need to use toc adjusting stubs when branching | |
12708 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12709 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12710 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12711 | for a stub was detected. If called from the top level, a return of | |
12712 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12713 | |
12714 | static int | |
4ce794b7 | 12715 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12716 | { |
9b5ecbd0 | 12717 | int ret; |
70cc837d AM |
12718 | |
12719 | /* Mark this section as checked. */ | |
12720 | isec->call_check_done = 1; | |
9b5ecbd0 | 12721 | |
772119ce AM |
12722 | /* We know none of our code bearing sections will need toc stubs. */ |
12723 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12724 | return 0; | |
12725 | ||
eea6121a | 12726 | if (isec->size == 0) |
082c50f8 AM |
12727 | return 0; |
12728 | ||
4c52953f AM |
12729 | if (isec->output_section == NULL) |
12730 | return 0; | |
12731 | ||
4c52953f | 12732 | ret = 0; |
70cc837d | 12733 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12734 | { |
70cc837d AM |
12735 | Elf_Internal_Rela *relstart, *rel; |
12736 | Elf_Internal_Sym *local_syms; | |
12737 | struct ppc_link_hash_table *htab; | |
2917689a | 12738 | |
70cc837d AM |
12739 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12740 | info->keep_memory); | |
12741 | if (relstart == NULL) | |
12742 | return -1; | |
90aecf7a | 12743 | |
70cc837d AM |
12744 | /* Look for branches to outside of this section. */ |
12745 | local_syms = NULL; | |
12746 | htab = ppc_hash_table (info); | |
12747 | if (htab == NULL) | |
12748 | return -1; | |
4c52953f | 12749 | |
70cc837d | 12750 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12751 | { |
70cc837d AM |
12752 | enum elf_ppc64_reloc_type r_type; |
12753 | unsigned long r_symndx; | |
12754 | struct elf_link_hash_entry *h; | |
12755 | struct ppc_link_hash_entry *eh; | |
12756 | Elf_Internal_Sym *sym; | |
12757 | asection *sym_sec; | |
12758 | struct _opd_sec_data *opd; | |
12759 | bfd_vma sym_value; | |
12760 | bfd_vma dest; | |
12761 | ||
12762 | r_type = ELF64_R_TYPE (rel->r_info); | |
12763 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12764 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12765 | && r_type != R_PPC64_REL14 |
12766 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12767 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12768 | && r_type != R_PPC64_PLTCALL |
12769 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12770 | continue; |
4c52953f | 12771 | |
70cc837d AM |
12772 | r_symndx = ELF64_R_SYM (rel->r_info); |
12773 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12774 | isec->owner)) | |
4c52953f | 12775 | { |
70cc837d AM |
12776 | ret = -1; |
12777 | break; | |
12778 | } | |
4c52953f | 12779 | |
70cc837d AM |
12780 | /* Calls to dynamic lib functions go through a plt call stub |
12781 | that uses r2. */ | |
ed7007c1 | 12782 | eh = ppc_elf_hash_entry (h); |
70cc837d AM |
12783 | if (eh != NULL |
12784 | && (eh->elf.plt.plist != NULL | |
12785 | || (eh->oh != NULL | |
12786 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12787 | { | |
12788 | ret = 1; | |
12789 | break; | |
4c52953f AM |
12790 | } |
12791 | ||
70cc837d AM |
12792 | if (sym_sec == NULL) |
12793 | /* Ignore other undefined symbols. */ | |
4c52953f | 12794 | continue; |
4c52953f | 12795 | |
70cc837d AM |
12796 | /* Assume branches to other sections not included in the |
12797 | link need stubs too, to cover -R and absolute syms. */ | |
12798 | if (sym_sec->output_section == NULL) | |
12799 | { | |
12800 | ret = 1; | |
12801 | break; | |
12802 | } | |
4c52953f | 12803 | |
70cc837d AM |
12804 | if (h == NULL) |
12805 | sym_value = sym->st_value; | |
12806 | else | |
12807 | { | |
12808 | if (h->root.type != bfd_link_hash_defined | |
12809 | && h->root.type != bfd_link_hash_defweak) | |
12810 | abort (); | |
12811 | sym_value = h->root.u.def.value; | |
12812 | } | |
12813 | sym_value += rel->r_addend; | |
4c52953f | 12814 | |
70cc837d AM |
12815 | /* If this branch reloc uses an opd sym, find the code section. */ |
12816 | opd = get_opd_info (sym_sec); | |
12817 | if (opd != NULL) | |
12818 | { | |
12819 | if (h == NULL && opd->adjust != NULL) | |
12820 | { | |
12821 | long adjust; | |
4c52953f | 12822 | |
92a9c616 | 12823 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12824 | if (adjust == -1) |
12825 | /* Assume deleted functions won't ever be called. */ | |
12826 | continue; | |
12827 | sym_value += adjust; | |
12828 | } | |
4c52953f | 12829 | |
aef36ac1 AM |
12830 | dest = opd_entry_value (sym_sec, sym_value, |
12831 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12832 | if (dest == (bfd_vma) -1) |
12833 | continue; | |
12834 | } | |
12835 | else | |
12836 | dest = (sym_value | |
12837 | + sym_sec->output_offset | |
12838 | + sym_sec->output_section->vma); | |
4c52953f | 12839 | |
70cc837d AM |
12840 | /* Ignore branch to self. */ |
12841 | if (sym_sec == isec) | |
12842 | continue; | |
4c52953f | 12843 | |
70cc837d AM |
12844 | /* If the called function uses the toc, we need a stub. */ |
12845 | if (sym_sec->has_toc_reloc | |
12846 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12847 | { |
70cc837d | 12848 | ret = 1; |
4c52953f AM |
12849 | break; |
12850 | } | |
70cc837d AM |
12851 | |
12852 | /* Assume any branch that needs a long branch stub might in fact | |
12853 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12854 | else if (dest - (isec->output_offset | |
12855 | + isec->output_section->vma | |
6911b7dc AM |
12856 | + rel->r_offset) + (1 << 25) |
12857 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12858 | ? h->other | |
12859 | : sym->st_other)) | |
4c52953f | 12860 | { |
70cc837d AM |
12861 | ret = 1; |
12862 | break; | |
12863 | } | |
12864 | ||
12865 | /* If calling back to a section in the process of being | |
12866 | tested, we can't say for sure that no toc adjusting stubs | |
12867 | are needed, so don't return zero. */ | |
12868 | else if (sym_sec->call_check_in_progress) | |
12869 | ret = 2; | |
12870 | ||
12871 | /* Branches to another section that itself doesn't have any TOC | |
12872 | references are OK. Recursively call ourselves to check. */ | |
12873 | else if (!sym_sec->call_check_done) | |
12874 | { | |
12875 | int recur; | |
12876 | ||
12877 | /* Mark current section as indeterminate, so that other | |
12878 | sections that call back to current won't be marked as | |
12879 | known. */ | |
12880 | isec->call_check_in_progress = 1; | |
12881 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12882 | isec->call_check_in_progress = 0; | |
12883 | ||
4c52953f AM |
12884 | if (recur != 0) |
12885 | { | |
70cc837d AM |
12886 | ret = recur; |
12887 | if (recur != 2) | |
12888 | break; | |
4c52953f AM |
12889 | } |
12890 | } | |
4c52953f | 12891 | } |
70cc837d | 12892 | |
c9594989 AM |
12893 | if (elf_symtab_hdr (isec->owner).contents |
12894 | != (unsigned char *) local_syms) | |
70cc837d AM |
12895 | free (local_syms); |
12896 | if (elf_section_data (isec)->relocs != relstart) | |
12897 | free (relstart); | |
9b5ecbd0 AM |
12898 | } |
12899 | ||
70cc837d AM |
12900 | if ((ret & 1) == 0 |
12901 | && isec->map_head.s != NULL | |
12902 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12903 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12904 | { | |
12905 | if (isec->map_head.s->has_toc_reloc | |
12906 | || isec->map_head.s->makes_toc_func_call) | |
12907 | ret = 1; | |
12908 | else if (!isec->map_head.s->call_check_done) | |
12909 | { | |
12910 | int recur; | |
12911 | isec->call_check_in_progress = 1; | |
12912 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12913 | isec->call_check_in_progress = 0; | |
12914 | if (recur != 0) | |
12915 | ret = recur; | |
12916 | } | |
12917 | } | |
12918 | ||
12919 | if (ret == 1) | |
12920 | isec->makes_toc_func_call = 1; | |
4c52953f | 12921 | |
9b5ecbd0 AM |
12922 | return ret; |
12923 | } | |
12924 | ||
721956f4 AM |
12925 | /* The linker repeatedly calls this function for each input section, |
12926 | in the order that input sections are linked into output sections. | |
12927 | Build lists of input sections to determine groupings between which | |
12928 | we may insert linker stubs. */ | |
12929 | ||
9b5ecbd0 | 12930 | bfd_boolean |
4ce794b7 | 12931 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12932 | { |
12933 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12934 | ||
4dfe6ac6 NC |
12935 | if (htab == NULL) |
12936 | return FALSE; | |
12937 | ||
734b6cf9 | 12938 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12939 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12940 | { |
3d6f9012 AM |
12941 | /* This happens to make the list in reverse order, |
12942 | which is what we want. */ | |
6f20ed8a AM |
12943 | htab->sec_info[isec->id].u.list |
12944 | = htab->sec_info[isec->output_section->id].u.list; | |
12945 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12946 | } |
ad8e1ba5 | 12947 | |
4c52953f | 12948 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12949 | { |
8b974ba3 AM |
12950 | /* Analyse sections that aren't already flagged as needing a |
12951 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12952 | .fixup contains branches, but only back to the function that | |
12953 | hit an exception. */ | |
12954 | if (!(isec->has_toc_reloc | |
12955 | || (isec->flags & SEC_CODE) == 0 | |
12956 | || strcmp (isec->name, ".fixup") == 0 | |
12957 | || isec->call_check_done)) | |
12958 | { | |
12959 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12960 | return FALSE; |
8b974ba3 AM |
12961 | } |
12962 | /* Make all sections use the TOC assigned for this object file. | |
12963 | This will be wrong for pasted sections; We fix that in | |
12964 | check_pasted_section(). */ | |
12965 | if (elf_gp (isec->owner) != 0) | |
12966 | htab->toc_curr = elf_gp (isec->owner); | |
12967 | } | |
12968 | ||
6f20ed8a | 12969 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12970 | return TRUE; |
721956f4 AM |
12971 | } |
12972 | ||
70cc837d AM |
12973 | /* Check that all .init and .fini sections use the same toc, if they |
12974 | have toc relocs. */ | |
12975 | ||
12976 | static bfd_boolean | |
12977 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12978 | { | |
12979 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12980 | ||
12981 | if (o != NULL) | |
12982 | { | |
12983 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12984 | bfd_vma toc_off = 0; | |
12985 | asection *i; | |
12986 | ||
12987 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12988 | if (i->has_toc_reloc) | |
12989 | { | |
12990 | if (toc_off == 0) | |
6f20ed8a AM |
12991 | toc_off = htab->sec_info[i->id].toc_off; |
12992 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12993 | return FALSE; |
12994 | } | |
6683a28d AM |
12995 | |
12996 | if (toc_off == 0) | |
12997 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12998 | if (i->makes_toc_func_call) | |
12999 | { | |
6f20ed8a | 13000 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
13001 | break; |
13002 | } | |
13003 | ||
70cc837d AM |
13004 | /* Make sure the whole pasted function uses the same toc offset. */ |
13005 | if (toc_off != 0) | |
13006 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 13007 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
13008 | } |
13009 | return TRUE; | |
13010 | } | |
13011 | ||
13012 | bfd_boolean | |
13013 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
13014 | { | |
13015 | return (check_pasted_section (info, ".init") | |
13016 | & check_pasted_section (info, ".fini")); | |
13017 | } | |
13018 | ||
721956f4 AM |
13019 | /* See whether we can group stub sections together. Grouping stub |
13020 | sections may result in fewer stubs. More importantly, we need to | |
13021 | put all .init* and .fini* stubs at the beginning of the .init or | |
13022 | .fini output sections respectively, because glibc splits the | |
13023 | _init and _fini functions into multiple parts. Putting a stub in | |
13024 | the middle of a function is not a good idea. */ | |
13025 | ||
6f20ed8a AM |
13026 | static bfd_boolean |
13027 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
13028 | bfd_size_type stub_group_size, |
13029 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 13030 | { |
6f20ed8a AM |
13031 | struct ppc_link_hash_table *htab; |
13032 | asection *osec; | |
7c8fe5c4 AM |
13033 | bfd_boolean suppress_size_errors; |
13034 | ||
6f20ed8a AM |
13035 | htab = ppc_hash_table (info); |
13036 | if (htab == NULL) | |
13037 | return FALSE; | |
13038 | ||
7c8fe5c4 | 13039 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
13040 | if (stub_group_size == 1) |
13041 | { | |
13042 | /* Default values. */ | |
13043 | if (stubs_always_before_branch) | |
09f92717 | 13044 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 13045 | else |
09f92717 | 13046 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
13047 | suppress_size_errors = TRUE; |
13048 | } | |
13049 | ||
6f20ed8a | 13050 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 13051 | { |
6f20ed8a AM |
13052 | asection *tail; |
13053 | ||
13054 | if (osec->id >= htab->sec_info_arr_size) | |
13055 | continue; | |
13056 | ||
13057 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 13058 | while (tail != NULL) |
721956f4 | 13059 | { |
734b6cf9 AM |
13060 | asection *curr; |
13061 | asection *prev; | |
13062 | bfd_size_type total; | |
13063 | bfd_boolean big_sec; | |
13064 | bfd_vma curr_toc; | |
6f20ed8a | 13065 | struct map_stub *group; |
09f92717 | 13066 | bfd_size_type group_size; |
734b6cf9 AM |
13067 | |
13068 | curr = tail; | |
eea6121a | 13069 | total = tail->size; |
09f92717 AM |
13070 | group_size = (ppc64_elf_section_data (tail) != NULL |
13071 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
13072 | ? stub_group_size >> 10 : stub_group_size); | |
13073 | ||
13074 | big_sec = total > group_size; | |
7c8fe5c4 | 13075 | if (big_sec && !suppress_size_errors) |
695344c0 | 13076 | /* xgettext:c-format */ |
871b3ab2 | 13077 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 13078 | tail->owner, tail); |
6f20ed8a | 13079 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 13080 | |
6f20ed8a | 13081 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 13082 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
13083 | < (ppc64_elf_section_data (prev) != NULL |
13084 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 13085 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 13086 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13087 | curr = prev; |
13088 | ||
13089 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 13090 | than group_size and thus can be handled by one stub |
734b6cf9 | 13091 | section. (or the tail section is itself larger than |
09f92717 AM |
13092 | group_size, in which case we may be toast.) We should |
13093 | really be keeping track of the total size of stubs added | |
13094 | here, as stubs contribute to the final output section | |
13095 | size. That's a little tricky, and this way will only | |
13096 | break if stubs added make the total size more than 2^25, | |
13097 | ie. for the default stub_group_size, if stubs total more | |
13098 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
13099 | group = bfd_alloc (curr->owner, sizeof (*group)); |
13100 | if (group == NULL) | |
13101 | return FALSE; | |
13102 | group->link_sec = curr; | |
13103 | group->stub_sec = NULL; | |
a4b6fadd | 13104 | group->needs_save_res = 0; |
df136d64 AM |
13105 | group->lr_restore = 0; |
13106 | group->eh_size = 0; | |
13107 | group->eh_base = 0; | |
a4b6fadd AM |
13108 | group->next = htab->group; |
13109 | htab->group = group; | |
734b6cf9 | 13110 | do |
721956f4 | 13111 | { |
6f20ed8a | 13112 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 13113 | /* Set up this stub group. */ |
6f20ed8a | 13114 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 13115 | } |
734b6cf9 AM |
13116 | while (tail != curr && (tail = prev) != NULL); |
13117 | ||
09f92717 | 13118 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
13119 | bytes before the stub section can be handled by it too. |
13120 | Don't do this if we have a really large section after the | |
13121 | stubs, as adding more stubs increases the chance that | |
13122 | branches may not reach into the stub section. */ | |
13123 | if (!stubs_always_before_branch && !big_sec) | |
13124 | { | |
13125 | total = 0; | |
13126 | while (prev != NULL | |
13127 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
13128 | < (ppc64_elf_section_data (prev) != NULL |
13129 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
13130 | ? (group_size = stub_group_size >> 10) |
13131 | : group_size)) | |
6f20ed8a | 13132 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13133 | { |
13134 | tail = prev; | |
6f20ed8a AM |
13135 | prev = htab->sec_info[tail->id].u.list; |
13136 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
13137 | } |
13138 | } | |
13139 | tail = prev; | |
721956f4 AM |
13140 | } |
13141 | } | |
6f20ed8a | 13142 | return TRUE; |
721956f4 AM |
13143 | } |
13144 | ||
58d180e8 AM |
13145 | static const unsigned char glink_eh_frame_cie[] = |
13146 | { | |
13147 | 0, 0, 0, 16, /* length. */ | |
13148 | 0, 0, 0, 0, /* id. */ | |
13149 | 1, /* CIE version. */ | |
13150 | 'z', 'R', 0, /* Augmentation string. */ | |
13151 | 4, /* Code alignment. */ | |
13152 | 0x78, /* Data alignment. */ | |
13153 | 65, /* RA reg. */ | |
13154 | 1, /* Augmentation size. */ | |
13155 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13156 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13157 | }; |
13158 | ||
d969d15f AM |
13159 | /* Stripping output sections is normally done before dynamic section |
13160 | symbols have been allocated. This function is called later, and | |
13161 | handles cases like htab->brlt which is mapped to its own output | |
13162 | section. */ | |
13163 | ||
13164 | static void | |
13165 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13166 | { | |
13167 | if (isec->size == 0 | |
13168 | && isec->output_section->size == 0 | |
53d8967a | 13169 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13170 | && !bfd_section_removed_from_list (info->output_bfd, |
13171 | isec->output_section) | |
13172 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13173 | { | |
13174 | isec->output_section->flags |= SEC_EXCLUDE; | |
13175 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13176 | info->output_bfd->section_count--; | |
13177 | } | |
13178 | } | |
13179 | ||
721956f4 AM |
13180 | /* Determine and set the size of the stub section for a final link. |
13181 | ||
13182 | The basic idea here is to examine all the relocations looking for | |
13183 | PC-relative calls to a target that is unreachable with a "bl" | |
13184 | instruction. */ | |
13185 | ||
b34976b6 | 13186 | bfd_boolean |
e7d1c40c | 13187 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13188 | { |
13189 | bfd_size_type stub_group_size; | |
b34976b6 | 13190 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
13191 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13192 | ||
4dfe6ac6 NC |
13193 | if (htab == NULL) |
13194 | return FALSE; | |
13195 | ||
e10a07b3 AM |
13196 | if (htab->params->power10_stubs == -1 && !htab->has_power10_relocs) |
13197 | htab->params->power10_stubs = 0; | |
13198 | ||
0e1862bb | 13199 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13200 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13201 | if (!htab->opd_abi) |
e7d1c40c AM |
13202 | htab->params->plt_thread_safe = 0; |
13203 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13204 | { |
e2458743 | 13205 | static const char *const thread_starter[] = |
794e51c0 AM |
13206 | { |
13207 | "pthread_create", | |
13208 | /* libstdc++ */ | |
13209 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13210 | /* librt */ | |
13211 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13212 | "mq_notify", "create_timer", | |
13213 | /* libanl */ | |
13214 | "getaddrinfo_a", | |
13215 | /* libgomp */ | |
2300b5a1 | 13216 | "GOMP_parallel", |
794e51c0 | 13217 | "GOMP_parallel_start", |
2300b5a1 | 13218 | "GOMP_parallel_loop_static", |
794e51c0 | 13219 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13220 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13221 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13222 | "GOMP_parallel_loop_guided", |
794e51c0 | 13223 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13224 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13225 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13226 | "GOMP_parallel_sections", |
68ffbac6 | 13227 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13228 | /* libgo */ |
13229 | "__go_go", | |
794e51c0 AM |
13230 | }; |
13231 | unsigned i; | |
13232 | ||
a4b6fadd | 13233 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13234 | { |
13235 | struct elf_link_hash_entry *h; | |
13236 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
13237 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
13238 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13239 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13240 | break; |
13241 | } | |
13242 | } | |
e7d1c40c AM |
13243 | stubs_always_before_branch = htab->params->group_size < 0; |
13244 | if (htab->params->group_size < 0) | |
13245 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13246 | else |
e7d1c40c | 13247 | stub_group_size = htab->params->group_size; |
721956f4 | 13248 | |
6f20ed8a AM |
13249 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
13250 | return FALSE; | |
721956f4 | 13251 | |
a804e476 AM |
13252 | htab->tga_group = NULL; |
13253 | if (!htab->params->no_tls_get_addr_regsave | |
13254 | && htab->tga_desc_fd != NULL | |
13255 | && (htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefined | |
13256 | || htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefweak) | |
13257 | && htab->tls_get_addr_fd != NULL | |
13258 | && is_static_defined (&htab->tls_get_addr_fd->elf)) | |
13259 | { | |
13260 | asection *sym_sec, *code_sec, *stub_sec; | |
13261 | bfd_vma sym_value; | |
13262 | struct _opd_sec_data *opd; | |
13263 | ||
13264 | sym_sec = htab->tls_get_addr_fd->elf.root.u.def.section; | |
13265 | sym_value = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
13266 | code_sec = sym_sec; | |
13267 | opd = get_opd_info (sym_sec); | |
13268 | if (opd != NULL) | |
13269 | opd_entry_value (sym_sec, sym_value, &code_sec, NULL, FALSE); | |
13270 | htab->tga_group = htab->sec_info[code_sec->id].u.group; | |
13271 | stub_sec = (*htab->params->add_stub_section) (".tga_desc.stub", | |
13272 | htab->tga_group->link_sec); | |
13273 | if (stub_sec == NULL) | |
13274 | return FALSE; | |
13275 | htab->tga_group->stub_sec = stub_sec; | |
13276 | ||
13277 | htab->tga_desc_fd->elf.root.type = bfd_link_hash_defined; | |
13278 | htab->tga_desc_fd->elf.root.u.def.section = stub_sec; | |
13279 | htab->tga_desc_fd->elf.root.u.def.value = 0; | |
13280 | htab->tga_desc_fd->elf.type = STT_FUNC; | |
13281 | htab->tga_desc_fd->elf.def_regular = 1; | |
13282 | htab->tga_desc_fd->elf.non_elf = 0; | |
13283 | _bfd_elf_link_hash_hide_symbol (info, &htab->tga_desc_fd->elf, TRUE); | |
13284 | } | |
13285 | ||
c9301e31 AM |
13286 | #define STUB_SHRINK_ITER 20 |
13287 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
13288 | exit on a stub section shrinking. This is to break out of a | |
13289 | pathological case where adding stubs on one iteration decreases | |
13290 | section gaps (perhaps due to alignment), which then requires | |
13291 | fewer or smaller stubs on the next iteration. */ | |
13292 | ||
721956f4 AM |
13293 | while (1) |
13294 | { | |
13295 | bfd *input_bfd; | |
13296 | unsigned int bfd_indx; | |
a4b6fadd | 13297 | struct map_stub *group; |
721956f4 AM |
13298 | |
13299 | htab->stub_iteration += 1; | |
721956f4 AM |
13300 | |
13301 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13302 | input_bfd != NULL; | |
c72f2fb2 | 13303 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13304 | { |
13305 | Elf_Internal_Shdr *symtab_hdr; | |
13306 | asection *section; | |
6cdc0ccc | 13307 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13308 | |
0c8d6e5c | 13309 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13310 | continue; |
13311 | ||
721956f4 | 13312 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13313 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13314 | if (symtab_hdr->sh_info == 0) |
13315 | continue; | |
13316 | ||
721956f4 AM |
13317 | /* Walk over each section attached to the input bfd. */ |
13318 | for (section = input_bfd->sections; | |
13319 | section != NULL; | |
13320 | section = section->next) | |
13321 | { | |
721956f4 | 13322 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
13323 | |
13324 | /* If there aren't any relocs, then there's nothing more | |
13325 | to do. */ | |
13326 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13327 | || (section->flags & SEC_ALLOC) == 0 |
13328 | || (section->flags & SEC_LOAD) == 0 | |
13329 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
13330 | || section->reloc_count == 0) |
13331 | continue; | |
13332 | ||
13333 | /* If this section is a link-once section that will be | |
13334 | discarded, then don't create any stubs. */ | |
13335 | if (section->output_section == NULL | |
927be08e | 13336 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13337 | continue; |
13338 | ||
1e2f5b6e AM |
13339 | /* Get the relocs. */ |
13340 | internal_relocs | |
4ce794b7 | 13341 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13342 | info->keep_memory); |
721956f4 | 13343 | if (internal_relocs == NULL) |
1e2f5b6e | 13344 | goto error_ret_free_local; |
721956f4 AM |
13345 | |
13346 | /* Now examine each relocation. */ | |
13347 | irela = internal_relocs; | |
13348 | irelaend = irela + section->reloc_count; | |
13349 | for (; irela < irelaend; irela++) | |
13350 | { | |
4ce794b7 AM |
13351 | enum elf_ppc64_reloc_type r_type; |
13352 | unsigned int r_indx; | |
721956f4 AM |
13353 | enum ppc_stub_type stub_type; |
13354 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 13355 | asection *sym_sec, *code_sec; |
e054468f | 13356 | bfd_vma sym_value, code_value; |
721956f4 | 13357 | bfd_vma destination; |
6911b7dc | 13358 | unsigned long local_off; |
8843416a | 13359 | bfd_boolean ok_dest; |
721956f4 | 13360 | struct ppc_link_hash_entry *hash; |
8387904d | 13361 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13362 | struct elf_link_hash_entry *h; |
13363 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13364 | char *stub_name; |
13365 | const asection *id_sec; | |
74f0fb50 | 13366 | struct _opd_sec_data *opd; |
e054468f | 13367 | struct plt_entry *plt_ent; |
721956f4 AM |
13368 | |
13369 | r_type = ELF64_R_TYPE (irela->r_info); | |
13370 | r_indx = ELF64_R_SYM (irela->r_info); | |
13371 | ||
4ce794b7 | 13372 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13373 | { |
13374 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13375 | goto error_ret_free_internal; |
721956f4 AM |
13376 | } |
13377 | ||
13378 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 13379 | if (r_type != R_PPC64_REL24 |
05d0e962 | 13380 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
13381 | && r_type != R_PPC64_REL14 |
13382 | && r_type != R_PPC64_REL14_BRTAKEN | |
13383 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
13384 | continue; |
13385 | ||
13386 | /* Now determine the call target, its name, value, | |
13387 | section. */ | |
411e1bfb AM |
13388 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13389 | r_indx, input_bfd)) | |
13390 | goto error_ret_free_internal; | |
ed7007c1 | 13391 | hash = ppc_elf_hash_entry (h); |
411e1bfb | 13392 | |
8843416a | 13393 | ok_dest = FALSE; |
8387904d | 13394 | fdh = NULL; |
7fe2b9a6 | 13395 | sym_value = 0; |
411e1bfb | 13396 | if (hash == NULL) |
721956f4 | 13397 | { |
411e1bfb | 13398 | sym_value = sym->st_value; |
c27b8c2a AM |
13399 | if (sym_sec != NULL |
13400 | && sym_sec->output_section != NULL) | |
13401 | ok_dest = TRUE; | |
721956f4 | 13402 | } |
7fe2b9a6 AM |
13403 | else if (hash->elf.root.type == bfd_link_hash_defined |
13404 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13405 | { | |
13406 | sym_value = hash->elf.root.u.def.value; | |
13407 | if (sym_sec->output_section != NULL) | |
13408 | ok_dest = TRUE; | |
13409 | } | |
13410 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13411 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13412 | { |
99877b66 | 13413 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13414 | use the func descriptor sym instead if it is |
13415 | defined. */ | |
ceb1f1ef | 13416 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13417 | && hash->oh != NULL) |
8387904d | 13418 | { |
8c5b4e52 | 13419 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13420 | if (fdh->elf.root.type == bfd_link_hash_defined |
13421 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13422 | { | |
13423 | sym_sec = fdh->elf.root.u.def.section; | |
13424 | sym_value = fdh->elf.root.u.def.value; | |
13425 | if (sym_sec->output_section != NULL) | |
13426 | ok_dest = TRUE; | |
13427 | } | |
99877b66 AM |
13428 | else |
13429 | fdh = NULL; | |
8387904d | 13430 | } |
7fe2b9a6 AM |
13431 | } |
13432 | else | |
13433 | { | |
13434 | bfd_set_error (bfd_error_bad_value); | |
13435 | goto error_ret_free_internal; | |
721956f4 AM |
13436 | } |
13437 | ||
8843416a | 13438 | destination = 0; |
6911b7dc | 13439 | local_off = 0; |
8843416a AM |
13440 | if (ok_dest) |
13441 | { | |
13442 | sym_value += irela->r_addend; | |
13443 | destination = (sym_value | |
13444 | + sym_sec->output_offset | |
13445 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13446 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13447 | ? hash->elf.other | |
13448 | : sym->st_other); | |
8843416a AM |
13449 | } |
13450 | ||
8387904d | 13451 | code_sec = sym_sec; |
e054468f | 13452 | code_value = sym_value; |
74f0fb50 AM |
13453 | opd = get_opd_info (sym_sec); |
13454 | if (opd != NULL) | |
8387904d AM |
13455 | { |
13456 | bfd_vma dest; | |
13457 | ||
74f0fb50 | 13458 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13459 | { |
51aecdc5 | 13460 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13461 | if (adjust == -1) |
13462 | continue; | |
e054468f | 13463 | code_value += adjust; |
8387904d AM |
13464 | sym_value += adjust; |
13465 | } | |
13466 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 13467 | &code_sec, &code_value, FALSE); |
8387904d AM |
13468 | if (dest != (bfd_vma) -1) |
13469 | { | |
13470 | destination = dest; | |
13471 | if (fdh != NULL) | |
13472 | { | |
13473 | /* Fixup old ABI sym to point at code | |
13474 | entry. */ | |
99877b66 | 13475 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13476 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13477 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13478 | } |
13479 | } | |
13480 | } | |
13481 | ||
721956f4 | 13482 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13483 | plt_ent = NULL; |
721956f4 | 13484 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13485 | &plt_ent, destination, |
13486 | local_off); | |
ad8e1ba5 | 13487 | |
05d0e962 AM |
13488 | if (r_type == R_PPC64_REL24_NOTOC) |
13489 | { | |
13490 | if (stub_type == ppc_stub_plt_call) | |
13491 | stub_type = ppc_stub_plt_call_notoc; | |
13492 | else if (stub_type == ppc_stub_long_branch | |
13493 | || (code_sec != NULL | |
13494 | && code_sec->output_section != NULL | |
13495 | && (((hash ? hash->elf.other : sym->st_other) | |
13496 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 13497 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
13498 | stub_type = ppc_stub_long_branch_notoc; |
13499 | } | |
13500 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13501 | { |
13502 | /* Check whether we need a TOC adjusting stub. | |
13503 | Since the linker pastes together pieces from | |
13504 | different object files when creating the | |
13505 | _init and _fini functions, it may be that a | |
13506 | call to what looks like a local sym is in | |
13507 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13508 | if ((code_sec != NULL |
13509 | && code_sec->output_section != NULL | |
33cb30a1 | 13510 | && (code_sec->has_toc_reloc |
918dc783 AM |
13511 | || code_sec->makes_toc_func_call) |
13512 | && (htab->sec_info[code_sec->id].toc_off | |
13513 | != htab->sec_info[section->id].toc_off)) | |
33cb30a1 AM |
13514 | || (((hash ? hash->elf.other : sym->st_other) |
13515 | & STO_PPC64_LOCAL_MASK) | |
13516 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13517 | stub_type = ppc_stub_long_branch_r2off; |
13518 | } | |
13519 | ||
721956f4 AM |
13520 | if (stub_type == ppc_stub_none) |
13521 | continue; | |
13522 | ||
411e1bfb AM |
13523 | /* __tls_get_addr calls might be eliminated. */ |
13524 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13525 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13526 | && hash != NULL |
ed7007c1 | 13527 | && is_tls_get_addr (&hash->elf, htab) |
411e1bfb AM |
13528 | && section->has_tls_reloc |
13529 | && irela != internal_relocs) | |
13530 | { | |
13531 | /* Get tls info. */ | |
f961d9dd | 13532 | unsigned char *tls_mask; |
411e1bfb | 13533 | |
3a71aa26 | 13534 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13535 | irela - 1, input_bfd)) |
13536 | goto error_ret_free_internal; | |
abc489c6 AM |
13537 | if ((*tls_mask & TLS_TLS) != 0 |
13538 | && (*tls_mask & (TLS_GD | TLS_LD)) == 0) | |
411e1bfb AM |
13539 | continue; |
13540 | } | |
13541 | ||
f378ab09 | 13542 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13543 | { |
6e1816be AM |
13544 | if (!htab->opd_abi |
13545 | && htab->params->plt_localentry0 != 0 | |
13546 | && is_elfv2_localentry0 (&hash->elf)) | |
13547 | htab->has_plt_localentry0 = 1; | |
13548 | else if (irela + 1 < irelaend | |
13549 | && irela[1].r_offset == irela->r_offset + 4 | |
13550 | && (ELF64_R_TYPE (irela[1].r_info) | |
13551 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13552 | { |
13553 | if (!tocsave_find (htab, INSERT, | |
13554 | &local_syms, irela + 1, input_bfd)) | |
13555 | goto error_ret_free_internal; | |
13556 | } | |
f378ab09 AM |
13557 | else |
13558 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13559 | } |
3b421ab3 | 13560 | |
721956f4 | 13561 | /* Support for grouping stub sections. */ |
6f20ed8a | 13562 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13563 | |
13564 | /* Get the name of this stub. */ | |
13565 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13566 | if (!stub_name) | |
13567 | goto error_ret_free_internal; | |
13568 | ||
13569 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 13570 | stub_name, FALSE, FALSE); |
721956f4 AM |
13571 | if (stub_entry != NULL) |
13572 | { | |
05d0e962 | 13573 | enum ppc_stub_type old_type; |
e10a07b3 | 13574 | |
05d0e962 AM |
13575 | /* A stub has already been created, but it may |
13576 | not be the required type. We shouldn't be | |
13577 | transitioning from plt_call to long_branch | |
13578 | stubs or vice versa, but we might be | |
13579 | upgrading from plt_call to plt_call_r2save or | |
13580 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13581 | free (stub_name); |
e10a07b3 AM |
13582 | if (htab->params->power10_stubs == -1) |
13583 | { | |
13584 | /* For --power10-stubs=auto, don't merge _notoc | |
13585 | and other varieties of stubs. (The _both | |
13586 | variety won't be created.) */ | |
13587 | bfd_boolean notoc = r_type == R_PPC64_REL24_NOTOC; | |
13588 | struct ppc_stub_hash_entry *alt_stub | |
13589 | = select_alt_stub (stub_entry, notoc); | |
13590 | ||
13591 | if (alt_stub == NULL) | |
13592 | { | |
13593 | alt_stub = (struct ppc_stub_hash_entry *) | |
13594 | stub_hash_newfunc (NULL, | |
13595 | &htab->stub_hash_table, | |
13596 | stub_entry->root.string); | |
13597 | if (alt_stub == NULL) | |
13598 | { | |
13599 | /* xgettext:c-format */ | |
13600 | _bfd_error_handler | |
13601 | (_("%pB: cannot create stub entry %s"), | |
13602 | section->owner, stub_entry->root.string); | |
13603 | goto error_ret_free_internal; | |
13604 | } | |
13605 | *alt_stub = *stub_entry; | |
13606 | stub_entry->root.next = &alt_stub->root; | |
13607 | if (notoc) | |
13608 | /* Sort notoc stubs first, for no good | |
13609 | reason. */ | |
13610 | alt_stub = stub_entry; | |
13611 | alt_stub->stub_type = stub_type; | |
13612 | } | |
13613 | stub_entry = alt_stub; | |
13614 | } | |
05d0e962 AM |
13615 | old_type = stub_entry->stub_type; |
13616 | switch (old_type) | |
13617 | { | |
13618 | default: | |
13619 | abort (); | |
13620 | ||
13621 | case ppc_stub_save_res: | |
13622 | continue; | |
13623 | ||
13624 | case ppc_stub_plt_call: | |
13625 | case ppc_stub_plt_call_r2save: | |
13626 | case ppc_stub_plt_call_notoc: | |
13627 | case ppc_stub_plt_call_both: | |
13628 | if (stub_type == ppc_stub_plt_call) | |
13629 | continue; | |
13630 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13631 | { | |
13632 | if (old_type == ppc_stub_plt_call_notoc) | |
13633 | stub_type = ppc_stub_plt_call_both; | |
13634 | } | |
13635 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13636 | { | |
13637 | if (old_type == ppc_stub_plt_call_r2save) | |
13638 | stub_type = ppc_stub_plt_call_both; | |
13639 | } | |
13640 | else | |
13641 | abort (); | |
13642 | break; | |
13643 | ||
13644 | case ppc_stub_plt_branch: | |
13645 | case ppc_stub_plt_branch_r2off: | |
13646 | case ppc_stub_plt_branch_notoc: | |
13647 | case ppc_stub_plt_branch_both: | |
13648 | old_type += (ppc_stub_long_branch | |
13649 | - ppc_stub_plt_branch); | |
13650 | /* Fall through. */ | |
13651 | case ppc_stub_long_branch: | |
13652 | case ppc_stub_long_branch_r2off: | |
13653 | case ppc_stub_long_branch_notoc: | |
13654 | case ppc_stub_long_branch_both: | |
13655 | if (stub_type == ppc_stub_long_branch) | |
13656 | continue; | |
13657 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13658 | { | |
13659 | if (old_type == ppc_stub_long_branch_notoc) | |
13660 | stub_type = ppc_stub_long_branch_both; | |
13661 | } | |
13662 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13663 | { | |
13664 | if (old_type == ppc_stub_long_branch_r2off) | |
13665 | stub_type = ppc_stub_long_branch_both; | |
13666 | } | |
13667 | else | |
13668 | abort (); | |
13669 | break; | |
13670 | } | |
13671 | if (old_type < stub_type) | |
794e51c0 | 13672 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13673 | continue; |
13674 | } | |
13675 | ||
25f53a85 | 13676 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13677 | if (stub_entry == NULL) |
13678 | { | |
13679 | free (stub_name); | |
6cdc0ccc AM |
13680 | error_ret_free_internal: |
13681 | if (elf_section_data (section)->relocs == NULL) | |
13682 | free (internal_relocs); | |
13683 | error_ret_free_local: | |
c9594989 AM |
13684 | if (symtab_hdr->contents |
13685 | != (unsigned char *) local_syms) | |
6cdc0ccc | 13686 | free (local_syms); |
b34976b6 | 13687 | return FALSE; |
721956f4 AM |
13688 | } |
13689 | ||
ad8e1ba5 | 13690 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13691 | if (stub_type >= ppc_stub_plt_call |
13692 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13693 | { |
05d0e962 AM |
13694 | stub_entry->target_value = sym_value; |
13695 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13696 | } |
13697 | else | |
13698 | { | |
05d0e962 AM |
13699 | stub_entry->target_value = code_value; |
13700 | stub_entry->target_section = code_sec; | |
e054468f | 13701 | } |
721956f4 | 13702 | stub_entry->h = hash; |
e054468f | 13703 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13704 | stub_entry->symtype |
13705 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13706 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13707 | |
3d58e1fc AM |
13708 | if (hash != NULL |
13709 | && (hash->elf.root.type == bfd_link_hash_defined | |
13710 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13711 | htab->stub_globals += 1; |
721956f4 AM |
13712 | } |
13713 | ||
13714 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13715 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13716 | free (internal_relocs); |
721956f4 | 13717 | } |
6cdc0ccc AM |
13718 | |
13719 | if (local_syms != NULL | |
13720 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13721 | { | |
13722 | if (!info->keep_memory) | |
13723 | free (local_syms); | |
13724 | else | |
13725 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13726 | } | |
721956f4 AM |
13727 | } |
13728 | ||
5c3dead3 | 13729 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13730 | stub sections. */ |
d4aaa2a0 | 13731 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13732 | { |
13733 | group->lr_restore = 0; | |
13734 | group->eh_size = 0; | |
13735 | if (group->stub_sec != NULL) | |
13736 | { | |
13737 | asection *stub_sec = group->stub_sec; | |
13738 | ||
13739 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13740 | || stub_sec->rawsize < stub_sec->size) | |
13741 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13742 | stub_sec->rawsize = stub_sec->size; | |
13743 | stub_sec->size = 0; | |
13744 | stub_sec->reloc_count = 0; | |
13745 | stub_sec->flags &= ~SEC_RELOC; | |
13746 | } | |
13747 | } | |
a804e476 AM |
13748 | if (htab->tga_group != NULL) |
13749 | { | |
13750 | /* See emit_tga_desc and emit_tga_desc_eh_frame. */ | |
13751 | htab->tga_group->eh_size | |
13752 | = 1 + 2 + (htab->opd_abi != 0) + 3 + 8 * 2 + 3 + 8 + 3; | |
13753 | htab->tga_group->lr_restore = 23 * 4; | |
13754 | htab->tga_group->stub_sec->size = 24 * 4; | |
13755 | } | |
eea6121a | 13756 | |
ba21f564 AM |
13757 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13758 | || htab->brlt->rawsize < htab->brlt->size) | |
13759 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13760 | htab->brlt->size = 0; |
84f5d08e AM |
13761 | htab->brlt->reloc_count = 0; |
13762 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13763 | if (htab->relbrlt != NULL) |
eea6121a | 13764 | htab->relbrlt->size = 0; |
721956f4 | 13765 | |
63bc6f6c | 13766 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13767 | |
a4b6fadd AM |
13768 | for (group = htab->group; group != NULL; group = group->next) |
13769 | if (group->needs_save_res) | |
13770 | group->stub_sec->size += htab->sfpr->size; | |
13771 | ||
176a0d42 AM |
13772 | if (info->emitrelocations |
13773 | && htab->glink != NULL && htab->glink->size != 0) | |
13774 | { | |
13775 | htab->glink->reloc_count = 1; | |
13776 | htab->glink->flags |= SEC_RELOC; | |
13777 | } | |
13778 | ||
58d180e8 AM |
13779 | if (htab->glink_eh_frame != NULL |
13780 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13781 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13782 | { |
2e0ce1c8 | 13783 | size_t size = 0, align = 4; |
58d180e8 | 13784 | |
d4aaa2a0 | 13785 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13786 | if (group->eh_size != 0) |
13787 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13788 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13789 | size += (24 + align - 1) & -align; |
58d180e8 | 13790 | if (size != 0) |
2e0ce1c8 AM |
13791 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13792 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13793 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13794 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13795 | htab->glink_eh_frame->size = size; | |
13796 | } | |
13797 | ||
e7d1c40c | 13798 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13799 | for (group = htab->group; group != NULL; group = group->next) |
13800 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13801 | { |
13802 | int align = abs (htab->params->plt_stub_align); | |
13803 | group->stub_sec->size | |
13804 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13805 | } | |
d4aaa2a0 AM |
13806 | |
13807 | for (group = htab->group; group != NULL; group = group->next) | |
13808 | if (group->stub_sec != NULL | |
13809 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13810 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13811 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13812 | break; |
13813 | ||
d4aaa2a0 | 13814 | if (group == NULL |
ba21f564 AM |
13815 | && (htab->brlt->rawsize == htab->brlt->size |
13816 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13817 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 | 13818 | && (htab->glink_eh_frame == NULL |
a804e476 AM |
13819 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size) |
13820 | && (htab->tga_group == NULL | |
13821 | || htab->stub_iteration > 1)) | |
5c3dead3 AM |
13822 | break; |
13823 | ||
721956f4 | 13824 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13825 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13826 | } |
13827 | ||
da44f4e5 AM |
13828 | if (htab->glink_eh_frame != NULL |
13829 | && htab->glink_eh_frame->size != 0) | |
13830 | { | |
13831 | bfd_vma val; | |
13832 | bfd_byte *p, *last_fde; | |
13833 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13834 | struct map_stub *group; |
da44f4e5 | 13835 | |
df136d64 AM |
13836 | /* It is necessary to at least have a rough outline of the |
13837 | linker generated CIEs and FDEs written before | |
13838 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13839 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13840 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13841 | if (p == NULL) | |
13842 | return FALSE; | |
13843 | htab->glink_eh_frame->contents = p; | |
13844 | last_fde = p; | |
2e0ce1c8 | 13845 | align = 4; |
da44f4e5 AM |
13846 | |
13847 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13848 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13849 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13850 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13851 | p += last_fde_len + 4; |
da44f4e5 | 13852 | |
d4aaa2a0 | 13853 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13854 | if (group->eh_size != 0) |
da44f4e5 | 13855 | { |
df136d64 | 13856 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13857 | last_fde = p; |
df136d64 | 13858 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13859 | /* FDE length. */ |
2e0ce1c8 | 13860 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13861 | p += 4; |
13862 | /* CIE pointer. */ | |
13863 | val = p - htab->glink_eh_frame->contents; | |
13864 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13865 | p += 4; | |
13866 | /* Offset to stub section, written later. */ | |
13867 | p += 4; | |
13868 | /* stub section size. */ | |
d4aaa2a0 | 13869 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13870 | p += 4; |
13871 | /* Augmentation. */ | |
13872 | p += 1; | |
df136d64 AM |
13873 | /* Make sure we don't have all nops. This is enough for |
13874 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13875 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13876 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13877 | } |
13878 | if (htab->glink != NULL && htab->glink->size != 0) | |
13879 | { | |
13880 | last_fde = p; | |
2e0ce1c8 | 13881 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13882 | /* FDE length. */ |
2e0ce1c8 | 13883 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13884 | p += 4; |
13885 | /* CIE pointer. */ | |
13886 | val = p - htab->glink_eh_frame->contents; | |
13887 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13888 | p += 4; | |
13889 | /* Offset to .glink, written later. */ | |
13890 | p += 4; | |
13891 | /* .glink size. */ | |
13892 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13893 | p += 4; | |
13894 | /* Augmentation. */ | |
13895 | p += 1; | |
13896 | ||
3cd7c7d7 | 13897 | *p++ = DW_CFA_advance_loc + (htab->has_plt_localentry0 ? 3 : 2); |
da44f4e5 AM |
13898 | *p++ = DW_CFA_register; |
13899 | *p++ = 65; | |
9f08fa5c | 13900 | *p++ = htab->opd_abi ? 12 : 0; |
3cd7c7d7 | 13901 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 4 : 2); |
da44f4e5 AM |
13902 | *p++ = DW_CFA_restore_extended; |
13903 | *p++ = 65; | |
2e0ce1c8 | 13904 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13905 | } |
13906 | /* Subsume any padding into the last FDE if user .eh_frame | |
13907 | sections are aligned more than glink_eh_frame. Otherwise any | |
13908 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13909 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13910 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13911 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13912 | htab->glink_eh_frame->size = size + pad; |
13913 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13914 | } | |
13915 | ||
d969d15f | 13916 | maybe_strip_output (info, htab->brlt); |
2efec98b AM |
13917 | if (htab->relbrlt != NULL) |
13918 | maybe_strip_output (info, htab->relbrlt); | |
d969d15f AM |
13919 | if (htab->glink_eh_frame != NULL) |
13920 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13921 | |
b34976b6 | 13922 | return TRUE; |
721956f4 AM |
13923 | } |
13924 | ||
13925 | /* Called after we have determined section placement. If sections | |
805fc799 | 13926 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13927 | |
805fc799 | 13928 | bfd_vma |
1c865ab2 | 13929 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13930 | { |
805fc799 | 13931 | asection *s; |
a27e685f | 13932 | bfd_vma TOCstart, adjust; |
721956f4 | 13933 | |
43417696 AM |
13934 | if (info != NULL) |
13935 | { | |
13936 | struct elf_link_hash_entry *h; | |
13937 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13938 | ||
13939 | if (is_elf_hash_table (htab) | |
13940 | && htab->hgot != NULL) | |
13941 | h = htab->hgot; | |
13942 | else | |
13943 | { | |
13944 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13945 | if (is_elf_hash_table (htab)) | |
13946 | htab->hgot = h; | |
13947 | } | |
13948 | if (h != NULL | |
13949 | && h->root.type == bfd_link_hash_defined | |
13950 | && !h->root.linker_def | |
13951 | && (!is_elf_hash_table (htab) | |
13952 | || h->def_regular)) | |
13953 | { | |
ed7007c1 | 13954 | TOCstart = defined_sym_val (h) - TOC_BASE_OFF; |
43417696 AM |
13955 | _bfd_set_gp_value (obfd, TOCstart); |
13956 | return TOCstart; | |
13957 | } | |
13958 | } | |
13959 | ||
805fc799 AM |
13960 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13961 | order. The TOC starts where the first of these sections starts. */ | |
13962 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13963 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13964 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13965 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13966 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13967 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13968 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13969 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13970 | { |
13971 | /* This may happen for | |
13972 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13973 | .toc directive | |
13974 | o bad linker script | |
13975 | o --gc-sections and empty TOC sections | |
13976 | ||
13977 | FIXME: Warn user? */ | |
13978 | ||
13979 | /* Look for a likely section. We probably won't even be | |
13980 | using TOCstart. */ | |
13981 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13982 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13983 | | SEC_EXCLUDE)) | |
805fc799 AM |
13984 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13985 | break; | |
721956f4 | 13986 | if (s == NULL) |
805fc799 | 13987 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13988 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13989 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13990 | break; | |
721956f4 | 13991 | if (s == NULL) |
805fc799 | 13992 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13993 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13994 | == SEC_ALLOC) | |
805fc799 | 13995 | break; |
721956f4 | 13996 | if (s == NULL) |
805fc799 | 13997 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13998 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13999 | break; |
14000 | } | |
721956f4 | 14001 | |
805fc799 AM |
14002 | TOCstart = 0; |
14003 | if (s != NULL) | |
14004 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 14005 | |
a27e685f AM |
14006 | /* Force alignment. */ |
14007 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
14008 | TOCstart -= adjust; | |
1c865ab2 AM |
14009 | _bfd_set_gp_value (obfd, TOCstart); |
14010 | ||
810d4e75 | 14011 | if (info != NULL && s != NULL) |
1c865ab2 AM |
14012 | { |
14013 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14014 | ||
810d4e75 AM |
14015 | if (htab != NULL) |
14016 | { | |
14017 | if (htab->elf.hgot != NULL) | |
14018 | { | |
a27e685f | 14019 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
14020 | htab->elf.hgot->root.u.def.section = s; |
14021 | } | |
14022 | } | |
14023 | else | |
1c865ab2 | 14024 | { |
810d4e75 AM |
14025 | struct bfd_link_hash_entry *bh = NULL; |
14026 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
14027 | s, TOC_BASE_OFF - adjust, |
14028 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
14029 | } |
14030 | } | |
805fc799 | 14031 | return TOCstart; |
721956f4 AM |
14032 | } |
14033 | ||
a345bc8d | 14034 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 14035 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
14036 | |
14037 | static bfd_boolean | |
49c09209 | 14038 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
14039 | { |
14040 | struct bfd_link_info *info; | |
14041 | struct ppc_link_hash_table *htab; | |
49c09209 | 14042 | struct plt_entry *ent; |
a345bc8d AM |
14043 | asection *s; |
14044 | ||
14045 | if (h->root.type == bfd_link_hash_indirect) | |
14046 | return TRUE; | |
14047 | ||
49c09209 AM |
14048 | info = inf; |
14049 | htab = ppc_hash_table (info); | |
14050 | if (htab == NULL) | |
14051 | return FALSE; | |
14052 | ||
14053 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14054 | if (ent->plt.offset != (bfd_vma) -1) | |
14055 | { | |
14056 | /* This symbol has an entry in the procedure linkage | |
14057 | table. Set it up. */ | |
14058 | Elf_Internal_Rela rela; | |
2d7ad24e | 14059 | asection *plt, *relplt; |
49c09209 AM |
14060 | bfd_byte *loc; |
14061 | ||
14062 | if (!htab->elf.dynamic_sections_created | |
14063 | || h->dynindx == -1) | |
14064 | { | |
14065 | if (!(h->def_regular | |
14066 | && (h->root.type == bfd_link_hash_defined | |
14067 | || h->root.type == bfd_link_hash_defweak))) | |
14068 | continue; | |
2d7ad24e AM |
14069 | if (h->type == STT_GNU_IFUNC) |
14070 | { | |
14071 | plt = htab->elf.iplt; | |
14072 | relplt = htab->elf.irelplt; | |
cebd6b8a | 14073 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
14074 | if (htab->opd_abi) |
14075 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14076 | else | |
14077 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14078 | } | |
49c09209 | 14079 | else |
2d7ad24e AM |
14080 | { |
14081 | plt = htab->pltlocal; | |
14082 | if (bfd_link_pic (info)) | |
14083 | { | |
14084 | relplt = htab->relpltlocal; | |
14085 | if (htab->opd_abi) | |
14086 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14087 | else | |
14088 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14089 | } | |
14090 | else | |
14091 | relplt = NULL; | |
14092 | } | |
ed7007c1 | 14093 | rela.r_addend = defined_sym_val (h) + ent->addend; |
2d7ad24e AM |
14094 | |
14095 | if (relplt == NULL) | |
14096 | { | |
14097 | loc = plt->contents + ent->plt.offset; | |
14098 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
14099 | if (htab->opd_abi) | |
14100 | { | |
14101 | bfd_vma toc = elf_gp (info->output_bfd); | |
14102 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
14103 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14104 | } | |
14105 | } | |
14106 | else | |
14107 | { | |
14108 | rela.r_offset = (plt->output_section->vma | |
14109 | + plt->output_offset | |
14110 | + ent->plt.offset); | |
14111 | loc = relplt->contents + (relplt->reloc_count++ | |
14112 | * sizeof (Elf64_External_Rela)); | |
14113 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14114 | } | |
49c09209 AM |
14115 | } |
14116 | else | |
14117 | { | |
14118 | rela.r_offset = (htab->elf.splt->output_section->vma | |
14119 | + htab->elf.splt->output_offset | |
14120 | + ent->plt.offset); | |
14121 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
14122 | rela.r_addend = ent->addend; | |
14123 | loc = (htab->elf.srelplt->contents | |
14124 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
14125 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
14126 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
cebd6b8a | 14127 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e | 14128 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 14129 | } |
49c09209 AM |
14130 | } |
14131 | ||
a345bc8d AM |
14132 | if (!h->pointer_equality_needed) |
14133 | return TRUE; | |
14134 | ||
14135 | if (h->def_regular) | |
14136 | return TRUE; | |
14137 | ||
9e390558 | 14138 | s = htab->global_entry; |
49c09209 AM |
14139 | if (s == NULL || s->size == 0) |
14140 | return TRUE; | |
14141 | ||
14142 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14143 | if (ent->plt.offset != (bfd_vma) -1 | |
14144 | && ent->addend == 0) | |
a345bc8d AM |
14145 | { |
14146 | bfd_byte *p; | |
14147 | asection *plt; | |
14148 | bfd_vma off; | |
14149 | ||
a345bc8d | 14150 | p = s->contents + h->root.u.def.value; |
33e44f2e | 14151 | plt = htab->elf.splt; |
a345bc8d AM |
14152 | if (!htab->elf.dynamic_sections_created |
14153 | || h->dynindx == -1) | |
2d7ad24e AM |
14154 | { |
14155 | if (h->type == STT_GNU_IFUNC) | |
14156 | plt = htab->elf.iplt; | |
14157 | else | |
14158 | plt = htab->pltlocal; | |
14159 | } | |
49c09209 | 14160 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
14161 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
14162 | ||
14163 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
14164 | { | |
14165 | info->callbacks->einfo | |
c1c8c1ef | 14166 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
14167 | h->root.root.string); |
14168 | bfd_set_error (bfd_error_bad_value); | |
14169 | htab->stub_error = TRUE; | |
14170 | } | |
14171 | ||
7341d5e2 AM |
14172 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
14173 | if (htab->params->emit_stub_syms) | |
14174 | { | |
14175 | size_t len = strlen (h->root.root.string); | |
14176 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
14177 | ||
14178 | if (name == NULL) | |
14179 | return FALSE; | |
14180 | ||
14181 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
14182 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
14183 | if (h == NULL) | |
14184 | return FALSE; | |
14185 | if (h->root.type == bfd_link_hash_new) | |
14186 | { | |
14187 | h->root.type = bfd_link_hash_defined; | |
14188 | h->root.u.def.section = s; | |
14189 | h->root.u.def.value = p - s->contents; | |
14190 | h->ref_regular = 1; | |
14191 | h->def_regular = 1; | |
14192 | h->ref_regular_nonweak = 1; | |
14193 | h->forced_local = 1; | |
14194 | h->non_elf = 0; | |
2ec55de3 | 14195 | h->root.linker_def = 1; |
7341d5e2 AM |
14196 | } |
14197 | } | |
14198 | ||
a345bc8d AM |
14199 | if (PPC_HA (off) != 0) |
14200 | { | |
14201 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
14202 | p += 4; | |
14203 | } | |
14204 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
14205 | p += 4; | |
14206 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
14207 | p += 4; | |
407aa07c | 14208 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14209 | break; |
14210 | } | |
14211 | return TRUE; | |
14212 | } | |
14213 | ||
49c09209 AM |
14214 | /* Write PLT relocs for locals. */ |
14215 | ||
14216 | static bfd_boolean | |
14217 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
14218 | { | |
14219 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14220 | bfd *ibfd; | |
14221 | ||
14222 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14223 | { | |
14224 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14225 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14226 | Elf_Internal_Shdr *symtab_hdr; | |
14227 | bfd_size_type locsymcount; | |
14228 | Elf_Internal_Sym *local_syms = NULL; | |
14229 | struct plt_entry *ent; | |
14230 | ||
14231 | if (!is_ppc64_elf (ibfd)) | |
14232 | continue; | |
14233 | ||
14234 | lgot_ents = elf_local_got_ents (ibfd); | |
14235 | if (!lgot_ents) | |
14236 | continue; | |
14237 | ||
14238 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14239 | locsymcount = symtab_hdr->sh_info; | |
14240 | end_lgot_ents = lgot_ents + locsymcount; | |
14241 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14242 | end_local_plt = local_plt + locsymcount; | |
14243 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14244 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14245 | if (ent->plt.offset != (bfd_vma) -1) | |
14246 | { | |
14247 | Elf_Internal_Sym *sym; | |
14248 | asection *sym_sec; | |
14249 | asection *plt, *relplt; | |
14250 | bfd_byte *loc; | |
14251 | bfd_vma val; | |
49c09209 AM |
14252 | |
14253 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14254 | lplt - local_plt, ibfd)) | |
14255 | { | |
c9594989 | 14256 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
49c09209 AM |
14257 | free (local_syms); |
14258 | return FALSE; | |
14259 | } | |
14260 | ||
14261 | val = sym->st_value + ent->addend; | |
49c09209 AM |
14262 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
14263 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14264 | ||
2d7ad24e AM |
14265 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14266 | { | |
cebd6b8a | 14267 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
14268 | plt = htab->elf.iplt; |
14269 | relplt = htab->elf.irelplt; | |
14270 | } | |
14271 | else | |
14272 | { | |
14273 | plt = htab->pltlocal; | |
14274 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
14275 | } | |
49c09209 | 14276 | |
2d7ad24e AM |
14277 | if (relplt == NULL) |
14278 | { | |
14279 | loc = plt->contents + ent->plt.offset; | |
14280 | bfd_put_64 (info->output_bfd, val, loc); | |
14281 | if (htab->opd_abi) | |
14282 | { | |
14283 | bfd_vma toc = elf_gp (ibfd); | |
14284 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14285 | } | |
14286 | } | |
49c09209 | 14287 | else |
2d7ad24e AM |
14288 | { |
14289 | Elf_Internal_Rela rela; | |
14290 | rela.r_offset = (ent->plt.offset | |
14291 | + plt->output_offset | |
14292 | + plt->output_section->vma); | |
14293 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14294 | { | |
14295 | if (htab->opd_abi) | |
14296 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14297 | else | |
14298 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14299 | } | |
14300 | else | |
14301 | { | |
14302 | if (htab->opd_abi) | |
14303 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14304 | else | |
14305 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14306 | } | |
14307 | rela.r_addend = val; | |
14308 | loc = relplt->contents + (relplt->reloc_count++ | |
14309 | * sizeof (Elf64_External_Rela)); | |
14310 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14311 | } | |
49c09209 AM |
14312 | } |
14313 | ||
14314 | if (local_syms != NULL | |
14315 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14316 | { | |
14317 | if (!info->keep_memory) | |
14318 | free (local_syms); | |
14319 | else | |
14320 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14321 | } | |
14322 | } | |
14323 | return TRUE; | |
14324 | } | |
14325 | ||
a804e476 AM |
14326 | /* Emit the static wrapper function preserving registers around a |
14327 | __tls_get_addr_opt call. */ | |
14328 | ||
14329 | static bfd_boolean | |
14330 | emit_tga_desc (struct ppc_link_hash_table *htab) | |
14331 | { | |
14332 | asection *stub_sec = htab->tga_group->stub_sec; | |
14333 | unsigned int cfa_updt = 11 * 4; | |
14334 | bfd_byte *p; | |
14335 | bfd_vma to, from, delta; | |
14336 | ||
14337 | BFD_ASSERT (htab->tga_desc_fd->elf.root.type == bfd_link_hash_defined | |
14338 | && htab->tga_desc_fd->elf.root.u.def.section == stub_sec | |
14339 | && htab->tga_desc_fd->elf.root.u.def.value == 0); | |
14340 | to = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
14341 | from = defined_sym_val (&htab->tga_desc_fd->elf) + cfa_updt; | |
14342 | delta = to - from; | |
14343 | if (delta + (1 << 25) >= 1 << 26) | |
14344 | { | |
14345 | _bfd_error_handler (_("__tls_get_addr call offset overflow")); | |
14346 | htab->stub_error = TRUE; | |
14347 | return FALSE; | |
14348 | } | |
14349 | ||
14350 | p = stub_sec->contents; | |
14351 | p = tls_get_addr_prologue (htab->elf.dynobj, p, htab); | |
14352 | bfd_put_32 (stub_sec->owner, B_DOT | 1 | (delta & 0x3fffffc), p); | |
14353 | p += 4; | |
14354 | p = tls_get_addr_epilogue (htab->elf.dynobj, p, htab); | |
14355 | return stub_sec->size == (bfd_size_type) (p - stub_sec->contents); | |
14356 | } | |
14357 | ||
14358 | /* Emit eh_frame describing the static wrapper function. */ | |
14359 | ||
14360 | static bfd_byte * | |
14361 | emit_tga_desc_eh_frame (struct ppc_link_hash_table *htab, bfd_byte *p) | |
14362 | { | |
14363 | unsigned int cfa_updt = 11 * 4; | |
14364 | unsigned int i; | |
14365 | ||
14366 | *p++ = DW_CFA_advance_loc + cfa_updt / 4; | |
14367 | *p++ = DW_CFA_def_cfa_offset; | |
14368 | if (htab->opd_abi) | |
14369 | { | |
14370 | *p++ = 128; | |
14371 | *p++ = 1; | |
14372 | } | |
14373 | else | |
14374 | *p++ = 96; | |
14375 | *p++ = DW_CFA_offset_extended_sf; | |
14376 | *p++ = 65; | |
14377 | *p++ = (-16 / 8) & 0x7f; | |
14378 | for (i = 4; i < 12; i++) | |
14379 | { | |
14380 | *p++ = DW_CFA_offset + i; | |
14381 | *p++ = (htab->opd_abi ? 13 : 12) - i; | |
14382 | } | |
14383 | *p++ = DW_CFA_advance_loc + 10; | |
14384 | *p++ = DW_CFA_def_cfa_offset; | |
14385 | *p++ = 0; | |
14386 | for (i = 4; i < 12; i++) | |
14387 | *p++ = DW_CFA_restore + i; | |
14388 | *p++ = DW_CFA_advance_loc + 2; | |
14389 | *p++ = DW_CFA_restore_extended; | |
14390 | *p++ = 65; | |
14391 | return p; | |
14392 | } | |
14393 | ||
721956f4 AM |
14394 | /* Build all the stubs associated with the current output file. |
14395 | The stubs are kept in a hash table attached to the main linker | |
14396 | hash table. This function is called via gldelf64ppc_finish. */ | |
14397 | ||
b34976b6 | 14398 | bfd_boolean |
e7d1c40c | 14399 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14400 | char **stats) |
5d1634d7 AM |
14401 | { |
14402 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14403 | struct map_stub *group; |
721956f4 | 14404 | asection *stub_sec; |
5d1634d7 | 14405 | bfd_byte *p; |
e717da7e | 14406 | int stub_sec_count = 0; |
5d1634d7 | 14407 | |
4dfe6ac6 NC |
14408 | if (htab == NULL) |
14409 | return FALSE; | |
14410 | ||
eea6121a | 14411 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14412 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14413 | { |
14414 | group->eh_size = 0; | |
14415 | group->lr_restore = 0; | |
14416 | if ((stub_sec = group->stub_sec) != NULL | |
14417 | && stub_sec->size != 0) | |
14418 | { | |
14419 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14420 | stub_sec->size); | |
14421 | if (stub_sec->contents == NULL) | |
14422 | return FALSE; | |
14423 | stub_sec->size = 0; | |
14424 | } | |
14425 | } | |
5d1634d7 | 14426 | |
23eb7e01 | 14427 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14428 | { |
9f951329 | 14429 | unsigned int indx; |
ad8e1ba5 | 14430 | bfd_vma plt0; |
9f951329 | 14431 | |
721956f4 | 14432 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14433 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14434 | { |
14435 | struct elf_link_hash_entry *h; | |
468392fb AM |
14436 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
14437 | TRUE, FALSE, FALSE); | |
97b639ba AM |
14438 | if (h == NULL) |
14439 | return FALSE; | |
14440 | if (h->root.type == bfd_link_hash_new) | |
14441 | { | |
14442 | h->root.type = bfd_link_hash_defined; | |
14443 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14444 | h->root.u.def.value = 8; |
f5385ebf AM |
14445 | h->ref_regular = 1; |
14446 | h->def_regular = 1; | |
14447 | h->ref_regular_nonweak = 1; | |
14448 | h->forced_local = 1; | |
14449 | h->non_elf = 0; | |
2ec55de3 | 14450 | h->root.linker_def = 1; |
97b639ba AM |
14451 | } |
14452 | } | |
33e44f2e AM |
14453 | plt0 = (htab->elf.splt->output_section->vma |
14454 | + htab->elf.splt->output_offset | |
14455 | - 16); | |
176a0d42 AM |
14456 | if (info->emitrelocations) |
14457 | { | |
14458 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
14459 | if (r == NULL) | |
14460 | return FALSE; | |
14461 | r->r_offset = (htab->glink->output_offset | |
14462 | + htab->glink->output_section->vma); | |
14463 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
14464 | r->r_addend = plt0; | |
14465 | } | |
4ce794b7 | 14466 | p = htab->glink->contents; |
176a0d42 | 14467 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
14468 | bfd_put_64 (htab->glink->owner, plt0, p); |
14469 | p += 8; | |
b9e5796b AM |
14470 | if (htab->opd_abi) |
14471 | { | |
14472 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
14473 | p += 4; | |
14474 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14475 | p += 4; | |
14476 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14477 | p += 4; | |
14478 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
14479 | p += 4; | |
14480 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
14481 | p += 4; | |
14482 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14483 | p += 4; | |
14484 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14485 | p += 4; | |
14486 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
14487 | p += 4; | |
14488 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14489 | p += 4; | |
14490 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
14491 | p += 4; | |
14492 | } | |
14493 | else | |
14494 | { | |
3cd7c7d7 AM |
14495 | unsigned int insn; |
14496 | ||
14497 | /* 0: | |
14498 | . .quad plt0-1f # plt0 entry relative to 1: | |
14499 | # | |
14500 | # We get here with r12 initially @ a glink branch | |
14501 | # Load the address of _dl_runtime_resolve from plt0 and | |
14502 | # jump to it, with r0 set to the index of the PLT entry | |
14503 | # to be resolved and r11 the link map. | |
14504 | __glink_PLTresolve: | |
14505 | . std %r2,24(%r1) # optional | |
14506 | . mflr %r0 | |
14507 | . bcl 20,31,1f | |
14508 | 1: | |
14509 | . mflr %r11 | |
14510 | . mtlr %r0 | |
14511 | . ld %r0,(0b-1b)(%r11) | |
14512 | . sub %r12,%r12,%r11 | |
14513 | . add %r11,%r0,%r11 | |
14514 | . addi %r0,%r12,1b-2f | |
14515 | . ld %r12,0(%r11) | |
14516 | . srdi %r0,%r0,2 | |
14517 | . mtctr %r12 | |
14518 | . ld %r11,8(%r11) | |
14519 | . bctr | |
14520 | 2: | |
14521 | . b __glink_PLTresolve | |
14522 | . ... | |
14523 | . b __glink_PLTresolve */ | |
14524 | ||
14525 | if (htab->has_plt_localentry0) | |
14526 | { | |
14527 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); | |
14528 | p += 4; | |
14529 | } | |
b9e5796b AM |
14530 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); |
14531 | p += 4; | |
14532 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14533 | p += 4; | |
14534 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14535 | p += 4; | |
b9e5796b AM |
14536 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); |
14537 | p += 4; | |
3cd7c7d7 AM |
14538 | if (htab->has_plt_localentry0) |
14539 | insn = LD_R0_0R11 | (-20 & 0xfffc); | |
14540 | else | |
14541 | insn = LD_R0_0R11 | (-16 & 0xfffc); | |
14542 | bfd_put_32 (htab->glink->owner, insn, p); | |
14543 | p += 4; | |
b9e5796b AM |
14544 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
14545 | p += 4; | |
3cd7c7d7 | 14546 | bfd_put_32 (htab->glink->owner, ADD_R11_R0_R11, p); |
b9e5796b | 14547 | p += 4; |
3cd7c7d7 | 14548 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-44 & 0xffff), p); |
b9e5796b AM |
14549 | p += 4; |
14550 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14551 | p += 4; | |
14552 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
14553 | p += 4; | |
14554 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14555 | p += 4; | |
14556 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
14557 | p += 4; | |
14558 | } | |
407aa07c AM |
14559 | bfd_put_32 (htab->glink->owner, BCTR, p); |
14560 | p += 4; | |
c75bc4f7 | 14561 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 14562 | |
9f951329 AM |
14563 | /* Build the .glink lazy link call stubs. */ |
14564 | indx = 0; | |
9e390558 | 14565 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 14566 | { |
b9e5796b | 14567 | if (htab->opd_abi) |
9f951329 | 14568 | { |
b9e5796b AM |
14569 | if (indx < 0x8000) |
14570 | { | |
14571 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
14572 | p += 4; | |
14573 | } | |
14574 | else | |
14575 | { | |
14576 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
14577 | p += 4; | |
14578 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
14579 | p); | |
14580 | p += 4; | |
14581 | } | |
9f951329 | 14582 | } |
4ce794b7 | 14583 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 14584 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 14585 | indx++; |
9f951329 AM |
14586 | p += 4; |
14587 | } | |
5d1634d7 | 14588 | } |
5d1634d7 | 14589 | |
a804e476 AM |
14590 | if (htab->tga_group != NULL) |
14591 | { | |
14592 | htab->tga_group->lr_restore = 23 * 4; | |
14593 | htab->tga_group->stub_sec->size = 24 * 4; | |
14594 | if (!emit_tga_desc (htab)) | |
14595 | return FALSE; | |
14596 | if (htab->glink_eh_frame != NULL | |
14597 | && htab->glink_eh_frame->size != 0) | |
14598 | { | |
14599 | size_t align = 4; | |
14600 | ||
14601 | p = htab->glink_eh_frame->contents; | |
14602 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14603 | p += 17; | |
14604 | htab->tga_group->eh_size = emit_tga_desc_eh_frame (htab, p) - p; | |
14605 | } | |
14606 | } | |
14607 | ||
49c09209 AM |
14608 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
14609 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
14610 | ||
14611 | if (!write_plt_relocs_for_local_syms (info)) | |
14612 | return FALSE; | |
9e390558 | 14613 | |
7341d5e2 | 14614 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14615 | { |
4ce794b7 | 14616 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14617 | htab->brlt->size); |
4ce794b7 | 14618 | if (htab->brlt->contents == NULL) |
b34976b6 | 14619 | return FALSE; |
721956f4 | 14620 | } |
ee75fd95 | 14621 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14622 | { |
14623 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14624 | htab->relbrlt->size); |
63bc6f6c AM |
14625 | if (htab->relbrlt->contents == NULL) |
14626 | return FALSE; | |
14627 | } | |
5d1634d7 | 14628 | |
721956f4 AM |
14629 | /* Build the stubs as directed by the stub hash table. */ |
14630 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14631 | |
a4b6fadd AM |
14632 | for (group = htab->group; group != NULL; group = group->next) |
14633 | if (group->needs_save_res) | |
7dda8d3c | 14634 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14635 | |
aa8a7074 AM |
14636 | if (htab->relbrlt != NULL) |
14637 | htab->relbrlt->reloc_count = 0; | |
14638 | ||
e7d1c40c | 14639 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14640 | for (group = htab->group; group != NULL; group = group->next) |
14641 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14642 | { |
14643 | int align = abs (htab->params->plt_stub_align); | |
14644 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14645 | } | |
794e51c0 | 14646 | |
7dda8d3c AM |
14647 | for (group = htab->group; group != NULL; group = group->next) |
14648 | if (group->needs_save_res) | |
14649 | { | |
14650 | stub_sec = group->stub_sec; | |
14651 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14652 | htab->sfpr->contents, htab->sfpr->size); | |
14653 | if (htab->params->emit_stub_syms) | |
14654 | { | |
14655 | unsigned int i; | |
14656 | ||
14657 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14658 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
14659 | return FALSE; | |
14660 | } | |
14661 | } | |
14662 | ||
df136d64 AM |
14663 | if (htab->glink_eh_frame != NULL |
14664 | && htab->glink_eh_frame->size != 0) | |
14665 | { | |
14666 | bfd_vma val; | |
14667 | size_t align = 4; | |
14668 | ||
14669 | p = htab->glink_eh_frame->contents; | |
14670 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14671 | ||
14672 | for (group = htab->group; group != NULL; group = group->next) | |
14673 | if (group->eh_size != 0) | |
14674 | { | |
14675 | /* Offset to stub section. */ | |
14676 | val = (group->stub_sec->output_section->vma | |
14677 | + group->stub_sec->output_offset); | |
14678 | val -= (htab->glink_eh_frame->output_section->vma | |
14679 | + htab->glink_eh_frame->output_offset | |
14680 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14681 | if (val + 0x80000000 > 0xffffffff) | |
14682 | { | |
14683 | _bfd_error_handler | |
14684 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14685 | group->stub_sec->name); | |
14686 | return FALSE; | |
14687 | } | |
14688 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14689 | p += (group->eh_size + 17 + 3) & -4; | |
14690 | } | |
14691 | if (htab->glink != NULL && htab->glink->size != 0) | |
14692 | { | |
14693 | /* Offset to .glink. */ | |
14694 | val = (htab->glink->output_section->vma | |
14695 | + htab->glink->output_offset | |
14696 | + 8); | |
14697 | val -= (htab->glink_eh_frame->output_section->vma | |
14698 | + htab->glink_eh_frame->output_offset | |
14699 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14700 | if (val + 0x80000000 > 0xffffffff) | |
14701 | { | |
14702 | _bfd_error_handler | |
14703 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14704 | htab->glink->name); | |
14705 | return FALSE; | |
14706 | } | |
14707 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14708 | p += (24 + align - 1) & -align; | |
14709 | } | |
14710 | } | |
14711 | ||
d4aaa2a0 AM |
14712 | for (group = htab->group; group != NULL; group = group->next) |
14713 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14714 | { |
14715 | stub_sec_count += 1; | |
c9301e31 AM |
14716 | if (stub_sec->rawsize != stub_sec->size |
14717 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14718 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14719 | break; |
14720 | } | |
5d1634d7 | 14721 | |
25516cc5 | 14722 | if (group != NULL) |
5d1634d7 | 14723 | { |
b34976b6 | 14724 | htab->stub_error = TRUE; |
cf97bcb0 | 14725 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14726 | } |
721956f4 | 14727 | |
d2a300cf AM |
14728 | if (htab->stub_error) |
14729 | return FALSE; | |
14730 | ||
14731 | if (stats != NULL) | |
14732 | { | |
988b7300 AM |
14733 | char *groupmsg; |
14734 | if (asprintf (&groupmsg, | |
14735 | ngettext ("linker stubs in %u group\n", | |
14736 | "linker stubs in %u groups\n", | |
14737 | stub_sec_count), | |
14738 | stub_sec_count) < 0) | |
14739 | *stats = NULL; | |
14740 | else | |
14741 | { | |
14742 | if (asprintf (stats, _("%s" | |
14743 | " branch %lu\n" | |
14744 | " branch toc adj %lu\n" | |
14745 | " branch notoc %lu\n" | |
14746 | " branch both %lu\n" | |
14747 | " long branch %lu\n" | |
14748 | " long toc adj %lu\n" | |
14749 | " long notoc %lu\n" | |
14750 | " long both %lu\n" | |
14751 | " plt call %lu\n" | |
14752 | " plt call save %lu\n" | |
14753 | " plt call notoc %lu\n" | |
14754 | " plt call both %lu\n" | |
14755 | " global entry %lu"), | |
14756 | groupmsg, | |
14757 | htab->stub_count[ppc_stub_long_branch - 1], | |
14758 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
14759 | htab->stub_count[ppc_stub_long_branch_notoc - 1], | |
14760 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
14761 | htab->stub_count[ppc_stub_plt_branch - 1], | |
14762 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
14763 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], | |
14764 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
14765 | htab->stub_count[ppc_stub_plt_call - 1], | |
14766 | htab->stub_count[ppc_stub_plt_call_r2save - 1], | |
14767 | htab->stub_count[ppc_stub_plt_call_notoc - 1], | |
14768 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
14769 | htab->stub_count[ppc_stub_global_entry - 1]) < 0) | |
14770 | *stats = NULL; | |
14771 | free (groupmsg); | |
14772 | } | |
d2a300cf AM |
14773 | } |
14774 | return TRUE; | |
5bd4f169 AM |
14775 | } |
14776 | ||
60124e18 AM |
14777 | /* What to do when ld finds relocations against symbols defined in |
14778 | discarded sections. */ | |
14779 | ||
14780 | static unsigned int | |
14781 | ppc64_elf_action_discarded (asection *sec) | |
14782 | { | |
14783 | if (strcmp (".opd", sec->name) == 0) | |
14784 | return 0; | |
14785 | ||
14786 | if (strcmp (".toc", sec->name) == 0) | |
14787 | return 0; | |
14788 | ||
bce50a28 JJ |
14789 | if (strcmp (".toc1", sec->name) == 0) |
14790 | return 0; | |
14791 | ||
60124e18 AM |
14792 | return _bfd_elf_default_action_discarded (sec); |
14793 | } | |
14794 | ||
e59a1001 AM |
14795 | /* These are the dynamic relocations supported by glibc. */ |
14796 | ||
14797 | static bfd_boolean | |
14798 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) | |
14799 | { | |
14800 | switch (r_type) | |
14801 | { | |
14802 | case R_PPC64_RELATIVE: | |
14803 | case R_PPC64_NONE: | |
14804 | case R_PPC64_ADDR64: | |
14805 | case R_PPC64_GLOB_DAT: | |
14806 | case R_PPC64_IRELATIVE: | |
14807 | case R_PPC64_JMP_IREL: | |
14808 | case R_PPC64_JMP_SLOT: | |
14809 | case R_PPC64_DTPMOD64: | |
14810 | case R_PPC64_DTPREL64: | |
14811 | case R_PPC64_TPREL64: | |
14812 | case R_PPC64_TPREL16_LO_DS: | |
14813 | case R_PPC64_TPREL16_DS: | |
14814 | case R_PPC64_TPREL16: | |
14815 | case R_PPC64_TPREL16_LO: | |
14816 | case R_PPC64_TPREL16_HI: | |
14817 | case R_PPC64_TPREL16_HIGH: | |
14818 | case R_PPC64_TPREL16_HA: | |
14819 | case R_PPC64_TPREL16_HIGHA: | |
14820 | case R_PPC64_TPREL16_HIGHER: | |
14821 | case R_PPC64_TPREL16_HIGHEST: | |
14822 | case R_PPC64_TPREL16_HIGHERA: | |
14823 | case R_PPC64_TPREL16_HIGHESTA: | |
14824 | case R_PPC64_ADDR16_LO_DS: | |
14825 | case R_PPC64_ADDR16_LO: | |
14826 | case R_PPC64_ADDR16_HI: | |
14827 | case R_PPC64_ADDR16_HIGH: | |
14828 | case R_PPC64_ADDR16_HA: | |
14829 | case R_PPC64_ADDR16_HIGHA: | |
14830 | case R_PPC64_REL30: | |
14831 | case R_PPC64_COPY: | |
14832 | case R_PPC64_UADDR64: | |
14833 | case R_PPC64_UADDR32: | |
14834 | case R_PPC64_ADDR32: | |
14835 | case R_PPC64_ADDR24: | |
14836 | case R_PPC64_ADDR16: | |
14837 | case R_PPC64_UADDR16: | |
14838 | case R_PPC64_ADDR16_DS: | |
14839 | case R_PPC64_ADDR16_HIGHER: | |
14840 | case R_PPC64_ADDR16_HIGHEST: | |
14841 | case R_PPC64_ADDR16_HIGHERA: | |
14842 | case R_PPC64_ADDR16_HIGHESTA: | |
14843 | case R_PPC64_ADDR14: | |
14844 | case R_PPC64_ADDR14_BRTAKEN: | |
14845 | case R_PPC64_ADDR14_BRNTAKEN: | |
14846 | case R_PPC64_REL32: | |
14847 | case R_PPC64_REL64: | |
14848 | return TRUE; | |
14849 | ||
14850 | default: | |
14851 | return FALSE; | |
14852 | } | |
14853 | } | |
14854 | ||
5bd4f169 AM |
14855 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14856 | to handle the relocations for a section. | |
14857 | ||
14858 | The relocs are always passed as Rela structures; if the section | |
14859 | actually uses Rel structures, the r_addend field will always be | |
14860 | zero. | |
14861 | ||
14862 | This function is responsible for adjust the section contents as | |
14863 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14864 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14865 | necessary. |
14866 | ||
14867 | This function does not have to worry about setting the reloc | |
14868 | address or the reloc symbol index. | |
14869 | ||
14870 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14871 | ||
14872 | LOCAL_SECTIONS is an array giving the section in the input file | |
14873 | corresponding to the st_shndx field of each local symbol. | |
14874 | ||
14875 | The global hash table entry for the global symbols can be found | |
14876 | via elf_sym_hashes (input_bfd). | |
14877 | ||
1049f94e | 14878 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14879 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14880 | going to be the section symbol corresponding to the output | |
14881 | section, which means that the addend must be adjusted | |
14882 | accordingly. */ | |
14883 | ||
b34976b6 | 14884 | static bfd_boolean |
4ce794b7 AM |
14885 | ppc64_elf_relocate_section (bfd *output_bfd, |
14886 | struct bfd_link_info *info, | |
14887 | bfd *input_bfd, | |
14888 | asection *input_section, | |
14889 | bfd_byte *contents, | |
14890 | Elf_Internal_Rela *relocs, | |
14891 | Elf_Internal_Sym *local_syms, | |
14892 | asection **local_sections) | |
5bd4f169 | 14893 | { |
65f38f15 | 14894 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14895 | Elf_Internal_Shdr *symtab_hdr; |
14896 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14897 | Elf_Internal_Rela *rel; |
c316a17c | 14898 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14899 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14900 | Elf_Internal_Rela outrel; |
14901 | bfd_byte *loc; | |
411e1bfb | 14902 | struct got_entry **local_got_ents; |
5bd4f169 | 14903 | bfd_vma TOCstart; |
b34976b6 AM |
14904 | bfd_boolean ret = TRUE; |
14905 | bfd_boolean is_opd; | |
794e51c0 AM |
14906 | /* Assume 'at' branch hints. */ |
14907 | bfd_boolean is_isa_v2 = TRUE; | |
e59a1001 | 14908 | bfd_boolean warned_dynamic = FALSE; |
95f0d0d2 | 14909 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14910 | |
65f38f15 | 14911 | /* Initialize howto table if needed. */ |
5bd4f169 | 14912 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14913 | ppc_howto_init (); |
14914 | ||
65f38f15 | 14915 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14916 | if (htab == NULL) |
14917 | return FALSE; | |
ee75fd95 AM |
14918 | |
14919 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14920 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14921 | return TRUE; |
14922 | ||
7af5d5c4 AM |
14923 | if (!is_ppc64_elf (input_bfd)) |
14924 | { | |
14925 | bfd_set_error (bfd_error_wrong_format); | |
14926 | return FALSE; | |
14927 | } | |
0ffa91dd | 14928 | |
411e1bfb | 14929 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14930 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14931 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14932 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14933 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14934 | |
c316a17c | 14935 | rel = wrel = relocs; |
5bd4f169 | 14936 | relend = relocs + input_section->reloc_count; |
c316a17c | 14937 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14938 | { |
04c9666a | 14939 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14940 | bfd_vma addend; |
5bd4f169 AM |
14941 | bfd_reloc_status_type r; |
14942 | Elf_Internal_Sym *sym; | |
14943 | asection *sec; | |
039b3fef AM |
14944 | struct elf_link_hash_entry *h_elf; |
14945 | struct ppc_link_hash_entry *h; | |
14946 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14947 | const char *sym_name; |
0d4792f7 | 14948 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14949 | bfd_vma toc_addend; |
f961d9dd AM |
14950 | unsigned char tls_mask, tls_gd, tls_type; |
14951 | unsigned char sym_type; | |
5bd4f169 | 14952 | bfd_vma relocation; |
23cedd1d | 14953 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14954 | bfd_boolean warned; |
bc30df16 | 14955 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14956 | unsigned int insn; |
e11840f9 | 14957 | unsigned int mask; |
721956f4 AM |
14958 | struct ppc_stub_hash_entry *stub_entry; |
14959 | bfd_vma max_br_offset; | |
14960 | bfd_vma from; | |
c316a17c | 14961 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14962 | reloc_howto_type *howto; |
14963 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14964 | uint64_t pinsn; |
14965 | bfd_vma offset; | |
5bd4f169 | 14966 | |
c316a17c AM |
14967 | again: |
14968 | orig_rel = *rel; | |
14969 | ||
4ce794b7 | 14970 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14971 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14972 | |
14973 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14974 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14975 | proper TOC base to use. */ | |
14976 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14977 | && wrel != relocs |
14978 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14979 | && is_opd) |
c316a17c | 14980 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14981 | |
4ce794b7 AM |
14982 | sym = NULL; |
14983 | sec = NULL; | |
039b3fef | 14984 | h_elf = NULL; |
4ce794b7 | 14985 | sym_name = NULL; |
b34976b6 AM |
14986 | unresolved_reloc = FALSE; |
14987 | warned = FALSE; | |
65f38f15 | 14988 | |
0b13192e | 14989 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14990 | { |
14991 | /* It's a local symbol. */ | |
74f0fb50 | 14992 | struct _opd_sec_data *opd; |
4025353c | 14993 | |
5bd4f169 AM |
14994 | sym = local_syms + r_symndx; |
14995 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14996 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14997 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14998 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14999 | opd = get_opd_info (sec); |
15000 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 15001 | { |
51aecdc5 AM |
15002 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
15003 | + rel->r_addend)]; | |
4025353c AM |
15004 | if (adjust == -1) |
15005 | relocation = 0; | |
15006 | else | |
4cc603a5 AM |
15007 | { |
15008 | /* If this is a relocation against the opd section sym | |
15009 | and we have edited .opd, adjust the reloc addend so | |
15010 | that ld -r and ld --emit-relocs output is correct. | |
15011 | If it is a reloc against some other .opd symbol, | |
15012 | then the symbol value will be adjusted later. */ | |
15013 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
15014 | rel->r_addend += adjust; | |
15015 | else | |
15016 | relocation += adjust; | |
15017 | } | |
1e2f5b6e | 15018 | } |
5bd4f169 AM |
15019 | } |
15020 | else | |
15021 | { | |
62d887d4 L |
15022 | bfd_boolean ignored; |
15023 | ||
b2a8e766 AM |
15024 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
15025 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 15026 | h_elf, sec, relocation, |
62d887d4 | 15027 | unresolved_reloc, warned, ignored); |
039b3fef AM |
15028 | sym_name = h_elf->root.root.string; |
15029 | sym_type = h_elf->type; | |
b69fdb4e AM |
15030 | if (sec != NULL |
15031 | && sec->owner == output_bfd | |
15032 | && strcmp (sec->name, ".opd") == 0) | |
15033 | { | |
15034 | /* This is a symbol defined in a linker script. All | |
15035 | such are defined in output sections, even those | |
15036 | defined by simple assignment from a symbol defined in | |
15037 | an input section. Transfer the symbol to an | |
15038 | appropriate input .opd section, so that a branch to | |
15039 | this symbol will be mapped to the location specified | |
15040 | by the opd entry. */ | |
15041 | struct bfd_link_order *lo; | |
15042 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
15043 | if (lo->type == bfd_indirect_link_order) | |
15044 | { | |
15045 | asection *isec = lo->u.indirect.section; | |
15046 | if (h_elf->root.u.def.value >= isec->output_offset | |
15047 | && h_elf->root.u.def.value < (isec->output_offset | |
15048 | + isec->size)) | |
15049 | { | |
15050 | h_elf->root.u.def.value -= isec->output_offset; | |
15051 | h_elf->root.u.def.section = isec; | |
15052 | sec = isec; | |
15053 | break; | |
15054 | } | |
15055 | } | |
15056 | } | |
5bd4f169 | 15057 | } |
ed7007c1 | 15058 | h = ppc_elf_hash_entry (h_elf); |
5bd4f169 | 15059 | |
dbaa2011 | 15060 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
15061 | { |
15062 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
15063 | input_bfd, input_section, | |
0930cb30 | 15064 | contents, rel->r_offset); |
c316a17c AM |
15065 | wrel->r_offset = rel->r_offset; |
15066 | wrel->r_info = 0; | |
15067 | wrel->r_addend = 0; | |
15068 | ||
15069 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 15070 | symbols defined in discarded sections. Not done for |
c316a17c AM |
15071 | non-debug to preserve relocs in .eh_frame which the |
15072 | eh_frame editing code expects to be present. */ | |
15073 | if (bfd_link_relocatable (info) | |
15074 | && (input_section->flags & SEC_DEBUGGING)) | |
15075 | wrel--; | |
15076 | ||
15077 | continue; | |
15078 | } | |
ab96bf03 | 15079 | |
0e1862bb | 15080 | if (bfd_link_relocatable (info)) |
c316a17c | 15081 | goto copy_reloc; |
ab96bf03 | 15082 | |
f40da81b AM |
15083 | if (h != NULL && &h->elf == htab->elf.hgot) |
15084 | { | |
6f20ed8a | 15085 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
15086 | sec = bfd_abs_section_ptr; |
15087 | unresolved_reloc = FALSE; | |
15088 | } | |
15089 | ||
951fd09b AM |
15090 | /* TLS optimizations. Replace instruction sequences and relocs |
15091 | based on information we collected in tls_optimize. We edit | |
15092 | RELOCS so that --emit-relocs will output something sensible | |
15093 | for the final instruction stream. */ | |
15094 | tls_mask = 0; | |
15095 | tls_gd = 0; | |
0d4792f7 | 15096 | toc_symndx = 0; |
727fc41e AM |
15097 | if (h != NULL) |
15098 | tls_mask = h->tls_mask; | |
15099 | else if (local_got_ents != NULL) | |
411e1bfb | 15100 | { |
e054468f AM |
15101 | struct plt_entry **local_plt = (struct plt_entry **) |
15102 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 15103 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 15104 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
15105 | tls_mask = lgot_masks[r_symndx]; |
15106 | } | |
37da22e5 | 15107 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
15108 | && (r_type == R_PPC64_TLS |
15109 | || r_type == R_PPC64_TLSGD | |
15110 | || r_type == R_PPC64_TLSLD)) | |
15111 | { | |
15112 | /* Check for toc tls entries. */ | |
f961d9dd | 15113 | unsigned char *toc_tls; |
0d4792f7 | 15114 | |
727fc41e AM |
15115 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15116 | &local_syms, rel, input_bfd)) | |
15117 | return FALSE; | |
0d4792f7 | 15118 | |
727fc41e AM |
15119 | if (toc_tls) |
15120 | tls_mask = *toc_tls; | |
0d4792f7 AM |
15121 | } |
15122 | ||
15123 | /* Check that tls relocs are used with tls syms, and non-tls | |
15124 | relocs are used with non-tls syms. */ | |
cf35638d | 15125 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
15126 | && r_type != R_PPC64_NONE |
15127 | && (h == NULL | |
039b3fef AM |
15128 | || h->elf.root.type == bfd_link_hash_defined |
15129 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 15130 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 15131 | { |
37da22e5 | 15132 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
15133 | && (r_type == R_PPC64_TLS |
15134 | || r_type == R_PPC64_TLSGD | |
15135 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
15136 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
15137 | ; | |
15138 | else | |
25f53a85 | 15139 | info->callbacks->einfo |
1d483afe | 15140 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 15141 | /* xgettext:c-format */ |
c1c8c1ef | 15142 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 15143 | /* xgettext:c-format */ |
c1c8c1ef | 15144 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 15145 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
15146 | ppc64_elf_howto_table[r_type]->name, |
15147 | sym_name); | |
411e1bfb AM |
15148 | } |
15149 | ||
15150 | /* Ensure reloc mapping code below stays sane. */ | |
15151 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
15152 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
15153 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
15154 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
15155 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
15156 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
15157 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
15158 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
15159 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
15160 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
15161 | abort (); | |
0d4792f7 | 15162 | |
411e1bfb AM |
15163 | switch (r_type) |
15164 | { | |
15165 | default: | |
411e1bfb AM |
15166 | break; |
15167 | ||
ba761f19 | 15168 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 15169 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
2365f8d7 | 15170 | if ((insn & (0x3fu << 26)) != 58u << 26) |
ba761f19 AM |
15171 | abort (); |
15172 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 15173 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
15174 | r_type = R_PPC64_TOC16_LO; |
15175 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15176 | break; | |
15177 | ||
411e1bfb AM |
15178 | case R_PPC64_TOC16: |
15179 | case R_PPC64_TOC16_LO: | |
15180 | case R_PPC64_TOC16_DS: | |
15181 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
15182 | { |
15183 | /* Check for toc tls entries. */ | |
f961d9dd | 15184 | unsigned char *toc_tls; |
951fd09b | 15185 | int retval; |
411e1bfb | 15186 | |
3a71aa26 AM |
15187 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15188 | &local_syms, rel, input_bfd); | |
951fd09b | 15189 | if (retval == 0) |
411e1bfb AM |
15190 | return FALSE; |
15191 | ||
15192 | if (toc_tls) | |
15193 | { | |
951fd09b | 15194 | tls_mask = *toc_tls; |
411e1bfb AM |
15195 | if (r_type == R_PPC64_TOC16_DS |
15196 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 15197 | { |
37da22e5 | 15198 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
15199 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
15200 | goto toctprel; | |
15201 | } | |
411e1bfb | 15202 | else |
951fd09b AM |
15203 | { |
15204 | /* If we found a GD reloc pair, then we might be | |
15205 | doing a GD->IE transition. */ | |
15206 | if (retval == 2) | |
15207 | { | |
b00a0a86 | 15208 | tls_gd = TLS_GDIE; |
37da22e5 AM |
15209 | if ((tls_mask & TLS_TLS) != 0 |
15210 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 15211 | goto tls_ldgd_opt; |
951fd09b AM |
15212 | } |
15213 | else if (retval == 3) | |
15214 | { | |
37da22e5 AM |
15215 | if ((tls_mask & TLS_TLS) != 0 |
15216 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 15217 | goto tls_ldgd_opt; |
951fd09b AM |
15218 | } |
15219 | } | |
411e1bfb AM |
15220 | } |
15221 | } | |
15222 | break; | |
15223 | ||
9d6ded02 AM |
15224 | case R_PPC64_GOT_TPREL16_HI: |
15225 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 15226 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
15227 | && (tls_mask & TLS_TPREL) == 0) |
15228 | { | |
15229 | rel->r_offset -= d_offset; | |
95f0d0d2 | 15230 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
15231 | r_type = R_PPC64_NONE; |
15232 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15233 | } | |
15234 | break; | |
15235 | ||
411e1bfb AM |
15236 | case R_PPC64_GOT_TPREL16_DS: |
15237 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 15238 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15239 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15240 | { |
81407a69 | 15241 | toctprel: |
95f0d0d2 | 15242 | insn = bfd_get_32 (input_bfd, |
c316a17c | 15243 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
15244 | insn &= 31 << 21; |
15245 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 15246 | bfd_put_32 (input_bfd, insn, |
c316a17c | 15247 | contents + rel->r_offset - d_offset); |
411e1bfb | 15248 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
15249 | if (toc_symndx != 0) |
15250 | { | |
15251 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 15252 | rel->r_addend = toc_addend; |
0d4792f7 AM |
15253 | /* We changed the symbol. Start over in order to |
15254 | get h, sym, sec etc. right. */ | |
c316a17c | 15255 | goto again; |
0d4792f7 AM |
15256 | } |
15257 | else | |
15258 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
15259 | } |
15260 | break; | |
15261 | ||
87c69f97 | 15262 | case R_PPC64_GOT_TPREL_PCREL34: |
c213164a AM |
15263 | if ((tls_mask & TLS_TLS) != 0 |
15264 | && (tls_mask & TLS_TPREL) == 0) | |
15265 | { | |
15266 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
15267 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15268 | pinsn <<= 32; | |
15269 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15270 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
15271 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
15272 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15273 | contents + rel->r_offset); | |
15274 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15275 | contents + rel->r_offset + 4); | |
15276 | r_type = R_PPC64_TPREL34; | |
15277 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15278 | } | |
15279 | break; | |
15280 | ||
411e1bfb | 15281 | case R_PPC64_TLS: |
37da22e5 | 15282 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15283 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15284 | { |
c213164a | 15285 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
15286 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
15287 | if (insn == 0) | |
c213164a AM |
15288 | break; |
15289 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 15290 | { |
c213164a AM |
15291 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15292 | /* Was PPC64_TLS which sits on insn boundary, now | |
15293 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
15294 | rel->r_offset += d_offset; | |
15295 | r_type = R_PPC64_TPREL16_LO; | |
15296 | if (toc_symndx != 0) | |
15297 | { | |
15298 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
15299 | rel->r_addend = toc_addend; | |
15300 | /* We changed the symbol. Start over in order to | |
15301 | get h, sym, sec etc. right. */ | |
15302 | goto again; | |
15303 | } | |
15304 | else | |
15305 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15306 | } | |
15307 | else if ((rel->r_offset & 3) == 1) | |
15308 | { | |
15309 | /* For pcrel IE to LE we already have the full | |
15310 | offset and thus don't need an addi here. A nop | |
15311 | or mr will do. */ | |
2365f8d7 | 15312 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
15313 | { |
15314 | /* Extract regs from addi rt,ra,si. */ | |
15315 | unsigned int rt = (insn >> 21) & 0x1f; | |
15316 | unsigned int ra = (insn >> 16) & 0x1f; | |
15317 | if (rt == ra) | |
15318 | insn = NOP; | |
15319 | else | |
15320 | { | |
15321 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
15322 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
15323 | insn |= (31u << 26) | (444u << 1); | |
15324 | } | |
15325 | } | |
15326 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 15327 | } |
411e1bfb AM |
15328 | } |
15329 | break; | |
15330 | ||
411e1bfb AM |
15331 | case R_PPC64_GOT_TLSGD16_HI: |
15332 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 15333 | tls_gd = TLS_GDIE; |
37da22e5 | 15334 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
15335 | goto tls_gdld_hi; |
15336 | break; | |
15337 | ||
411e1bfb AM |
15338 | case R_PPC64_GOT_TLSLD16_HI: |
15339 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 15340 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 15341 | { |
951fd09b AM |
15342 | tls_gdld_hi: |
15343 | if ((tls_mask & tls_gd) != 0) | |
15344 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
15345 | + R_PPC64_GOT_TPREL16_DS); | |
15346 | else | |
411e1bfb | 15347 | { |
4fe5ca5b | 15348 | rel->r_offset -= d_offset; |
95f0d0d2 | 15349 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 15350 | r_type = R_PPC64_NONE; |
411e1bfb | 15351 | } |
951fd09b | 15352 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
15353 | } |
15354 | break; | |
15355 | ||
951fd09b AM |
15356 | case R_PPC64_GOT_TLSGD16: |
15357 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 15358 | tls_gd = TLS_GDIE; |
37da22e5 | 15359 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 15360 | goto tls_ldgd_opt; |
951fd09b | 15361 | break; |
411e1bfb | 15362 | |
951fd09b AM |
15363 | case R_PPC64_GOT_TLSLD16: |
15364 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 15365 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 15366 | { |
b9f04fe0 | 15367 | unsigned int insn1, insn2; |
102890f0 AM |
15368 | |
15369 | tls_ldgd_opt: | |
727fc41e AM |
15370 | offset = (bfd_vma) -1; |
15371 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
15372 | __tls_get_addr calls, we must trust that the call | |
15373 | stays with its arg setup insns, ie. that the next | |
15374 | reloc is the __tls_get_addr call associated with | |
15375 | the current reloc. Edit both insns. */ | |
9737e8af | 15376 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
15377 | && rel + 1 < relend |
15378 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
9e7028aa AM |
15379 | htab->tls_get_addr_fd, |
15380 | htab->tga_desc_fd, | |
727fc41e | 15381 | htab->tls_get_addr, |
9e7028aa | 15382 | htab->tga_desc)) |
727fc41e | 15383 | offset = rel[1].r_offset; |
b86ac8e3 AM |
15384 | /* We read the low GOT_TLS (or TOC16) insn because we |
15385 | need to keep the destination reg. It may be | |
15386 | something other than the usual r3, and moved to r3 | |
15387 | before the call by intervening code. */ | |
95f0d0d2 | 15388 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 15389 | contents + rel->r_offset - d_offset); |
102890f0 | 15390 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 15391 | { |
102890f0 | 15392 | /* IE */ |
b86ac8e3 | 15393 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 15394 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 15395 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 15396 | if (offset != (bfd_vma) -1) |
f58d5a2d | 15397 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
15398 | if (r_type == R_PPC64_TOC16 |
15399 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 15400 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
15401 | else |
15402 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
15403 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
15404 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
15405 | } | |
15406 | else | |
15407 | { | |
15408 | /* LE */ | |
b86ac8e3 AM |
15409 | insn1 &= 0x1f << 21; |
15410 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
15411 | insn2 = 0x38630000; /* addi 3,3,0 */ |
15412 | if (tls_gd == 0) | |
951fd09b | 15413 | { |
102890f0 | 15414 | /* Was an LD reloc. */ |
71c4e95a | 15415 | r_symndx = STN_UNDEF; |
102890f0 | 15416 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 15417 | } |
102890f0 | 15418 | else if (toc_symndx != 0) |
3a71aa26 AM |
15419 | { |
15420 | r_symndx = toc_symndx; | |
15421 | rel->r_addend = toc_addend; | |
15422 | } | |
102890f0 AM |
15423 | r_type = R_PPC64_TPREL16_HA; |
15424 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
15425 | if (offset != (bfd_vma) -1) |
15426 | { | |
15427 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
15428 | R_PPC64_TPREL16_LO); | |
15429 | rel[1].r_offset = offset + d_offset; | |
15430 | rel[1].r_addend = rel->r_addend; | |
15431 | } | |
102890f0 | 15432 | } |
95f0d0d2 | 15433 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 15434 | contents + rel->r_offset - d_offset); |
727fc41e | 15435 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
15436 | { |
15437 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
15438 | if (offset + 8 <= input_section->size) | |
15439 | { | |
15440 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
15441 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
15442 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
15443 | } | |
15444 | } | |
727fc41e AM |
15445 | if ((tls_mask & tls_gd) == 0 |
15446 | && (tls_gd == 0 || toc_symndx != 0)) | |
15447 | { | |
15448 | /* We changed the symbol. Start over in order | |
15449 | to get h, sym, sec etc. right. */ | |
c316a17c | 15450 | goto again; |
727fc41e AM |
15451 | } |
15452 | } | |
15453 | break; | |
15454 | ||
87c69f97 | 15455 | case R_PPC64_GOT_TLSGD_PCREL34: |
c213164a AM |
15456 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
15457 | { | |
15458 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15459 | pinsn <<= 32; | |
15460 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15461 | if ((tls_mask & TLS_GDIE) != 0) | |
15462 | { | |
15463 | /* IE, pla -> pld */ | |
15464 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
87c69f97 | 15465 | r_type = R_PPC64_GOT_TPREL_PCREL34; |
c213164a AM |
15466 | } |
15467 | else | |
15468 | { | |
15469 | /* LE, pla pcrel -> paddi r13 */ | |
15470 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15471 | r_type = R_PPC64_TPREL34; | |
15472 | } | |
15473 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15474 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15475 | contents + rel->r_offset); | |
15476 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15477 | contents + rel->r_offset + 4); | |
15478 | } | |
15479 | break; | |
15480 | ||
87c69f97 | 15481 | case R_PPC64_GOT_TLSLD_PCREL34: |
c213164a AM |
15482 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
15483 | { | |
15484 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15485 | pinsn <<= 32; | |
15486 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15487 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15488 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15489 | contents + rel->r_offset); | |
15490 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15491 | contents + rel->r_offset + 4); | |
15492 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15493 | r_symndx = STN_UNDEF; | |
15494 | r_type = R_PPC64_TPREL34; | |
15495 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15496 | goto again; | |
15497 | } | |
15498 | break; | |
15499 | ||
727fc41e | 15500 | case R_PPC64_TLSGD: |
37da22e5 | 15501 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 15502 | && rel + 1 < relend) |
727fc41e | 15503 | { |
b9f04fe0 | 15504 | unsigned int insn2; |
5663e321 | 15505 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15506 | |
4a421c53 | 15507 | offset = rel->r_offset; |
5663e321 | 15508 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15509 | { |
15510 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15511 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15512 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15513 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15514 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15515 | break; | |
15516 | } | |
15517 | ||
15518 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15519 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15520 | ||
b00a0a86 | 15521 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
15522 | { |
15523 | /* IE */ | |
15524 | r_type = R_PPC64_NONE; | |
15525 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
15526 | } | |
15527 | else | |
15528 | { | |
15529 | /* LE */ | |
15530 | if (toc_symndx != 0) | |
15531 | { | |
15532 | r_symndx = toc_symndx; | |
15533 | rel->r_addend = toc_addend; | |
15534 | } | |
c213164a AM |
15535 | if (r_type1 == R_PPC64_REL24_NOTOC |
15536 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15537 | { | |
15538 | r_type = R_PPC64_NONE; | |
15539 | insn2 = NOP; | |
15540 | } | |
15541 | else | |
15542 | { | |
15543 | rel->r_offset = offset + d_offset; | |
15544 | r_type = R_PPC64_TPREL16_LO; | |
15545 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15546 | } | |
727fc41e AM |
15547 | } |
15548 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15549 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15550 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15551 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15552 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15553 | if ((tls_mask & TLS_GDIE) == 0 |
15554 | && toc_symndx != 0 | |
15555 | && r_type != R_PPC64_NONE) | |
c316a17c | 15556 | goto again; |
411e1bfb | 15557 | } |
411e1bfb AM |
15558 | break; |
15559 | ||
727fc41e | 15560 | case R_PPC64_TLSLD: |
37da22e5 | 15561 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 15562 | && rel + 1 < relend) |
727fc41e | 15563 | { |
b9f04fe0 | 15564 | unsigned int insn2; |
5663e321 | 15565 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15566 | |
4a421c53 | 15567 | offset = rel->r_offset; |
5663e321 | 15568 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15569 | { |
15570 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15571 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15572 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15573 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15574 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15575 | break; | |
15576 | } | |
15577 | ||
15578 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15579 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15580 | ||
c213164a AM |
15581 | if (r_type1 == R_PPC64_REL24_NOTOC |
15582 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15583 | { | |
15584 | r_type = R_PPC64_NONE; | |
15585 | insn2 = NOP; | |
15586 | } | |
15587 | else | |
15588 | { | |
15589 | rel->r_offset = offset + d_offset; | |
15590 | r_symndx = STN_UNDEF; | |
15591 | r_type = R_PPC64_TPREL16_LO; | |
15592 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15593 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15594 | } | |
727fc41e | 15595 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
15596 | /* Zap the reloc on the _tls_get_addr call too. */ |
15597 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15598 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15599 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15600 | if (r_type != R_PPC64_NONE) |
15601 | goto again; | |
727fc41e AM |
15602 | } |
15603 | break; | |
15604 | ||
411e1bfb | 15605 | case R_PPC64_DTPMOD64: |
951fd09b AM |
15606 | if (rel + 1 < relend |
15607 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
15608 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 15609 | { |
951fd09b AM |
15610 | if ((tls_mask & TLS_GD) == 0) |
15611 | { | |
15612 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 15613 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
15614 | r_type = R_PPC64_TPREL64; |
15615 | else | |
15616 | { | |
4ce794b7 | 15617 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
15618 | r_type = R_PPC64_NONE; |
15619 | } | |
15620 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15621 | } | |
15622 | } | |
15623 | else | |
15624 | { | |
15625 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15626 | { |
4ce794b7 | 15627 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15628 | r_type = R_PPC64_NONE; |
951fd09b | 15629 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15630 | } |
411e1bfb AM |
15631 | } |
15632 | break; | |
15633 | ||
15634 | case R_PPC64_TPREL64: | |
951fd09b | 15635 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15636 | { |
15637 | r_type = R_PPC64_NONE; | |
15638 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15639 | } | |
15640 | break; | |
52a82034 | 15641 | |
006589cf AM |
15642 | case R_PPC64_ENTRY: |
15643 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15644 | if (!bfd_link_pic (info) | |
15645 | && !info->traditional_format | |
15646 | && relocation + 0x80008000 <= 0xffffffff) | |
15647 | { | |
15648 | unsigned int insn1, insn2; | |
15649 | ||
15650 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15651 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15652 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15653 | && insn2 == ADD_R2_R2_R12) | |
15654 | { | |
95f0d0d2 | 15655 | bfd_put_32 (input_bfd, |
006589cf AM |
15656 | LIS_R2 + PPC_HA (relocation), |
15657 | contents + rel->r_offset); | |
95f0d0d2 | 15658 | bfd_put_32 (input_bfd, |
006589cf AM |
15659 | ADDI_R2_R2 + PPC_LO (relocation), |
15660 | contents + rel->r_offset + 4); | |
15661 | } | |
15662 | } | |
15663 | else | |
15664 | { | |
15665 | relocation -= (rel->r_offset | |
15666 | + input_section->output_offset | |
15667 | + input_section->output_section->vma); | |
15668 | if (relocation + 0x80008000 <= 0xffffffff) | |
15669 | { | |
15670 | unsigned int insn1, insn2; | |
15671 | ||
15672 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15673 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15674 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15675 | && insn2 == ADD_R2_R2_R12) | |
15676 | { | |
95f0d0d2 | 15677 | bfd_put_32 (input_bfd, |
006589cf AM |
15678 | ADDIS_R2_R12 + PPC_HA (relocation), |
15679 | contents + rel->r_offset); | |
95f0d0d2 | 15680 | bfd_put_32 (input_bfd, |
006589cf AM |
15681 | ADDI_R2_R2 + PPC_LO (relocation), |
15682 | contents + rel->r_offset + 4); | |
15683 | } | |
15684 | } | |
15685 | } | |
15686 | break; | |
15687 | ||
52a82034 AM |
15688 | case R_PPC64_REL16_HA: |
15689 | /* If we are generating a non-PIC executable, edit | |
15690 | . 0: addis 2,12,.TOC.-0b@ha | |
15691 | . addi 2,2,.TOC.-0b@l | |
15692 | used by ELFv2 global entry points to set up r2, to | |
15693 | . lis 2,.TOC.@ha | |
15694 | . addi 2,2,.TOC.@l | |
15695 | if .TOC. is in range. */ | |
0e1862bb | 15696 | if (!bfd_link_pic (info) |
810d4e75 | 15697 | && !info->traditional_format |
006589cf | 15698 | && !htab->opd_abi |
4f038ee5 | 15699 | && rel->r_addend == d_offset |
52a82034 AM |
15700 | && h != NULL && &h->elf == htab->elf.hgot |
15701 | && rel + 1 < relend | |
15702 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15703 | && rel[1].r_offset == rel->r_offset + 4 | |
15704 | && rel[1].r_addend == rel->r_addend + 4 | |
15705 | && relocation + 0x80008000 <= 0xffffffff) | |
15706 | { | |
15707 | unsigned int insn1, insn2; | |
4a421c53 | 15708 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
15709 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15710 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15711 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15712 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15713 | { |
15714 | r_type = R_PPC64_ADDR16_HA; | |
15715 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15716 | rel->r_addend -= d_offset; | |
15717 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15718 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15719 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15720 | } |
15721 | } | |
15722 | break; | |
411e1bfb AM |
15723 | } |
15724 | ||
15725 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15726 | insn = 0; |
b25116a9 AM |
15727 | max_br_offset = 1 << 25; |
15728 | addend = rel->r_addend; | |
bc30df16 | 15729 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15730 | switch (r_type) |
5bd4f169 AM |
15731 | { |
15732 | default: | |
65f38f15 | 15733 | break; |
5bd4f169 | 15734 | |
3b421ab3 AM |
15735 | case R_PPC64_TOCSAVE: |
15736 | if (relocation + addend == (rel->r_offset | |
15737 | + input_section->output_offset | |
15738 | + input_section->output_section->vma) | |
15739 | && tocsave_find (htab, NO_INSERT, | |
15740 | &local_syms, rel, input_bfd)) | |
15741 | { | |
15742 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15743 | if (insn == NOP | |
15744 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15745 | bfd_put_32 (input_bfd, |
15746 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15747 | contents + rel->r_offset); |
15748 | } | |
15749 | break; | |
15750 | ||
65f38f15 AM |
15751 | /* Branch taken prediction relocations. */ |
15752 | case R_PPC64_ADDR14_BRTAKEN: | |
15753 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15754 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15755 | /* Fall through. */ |
65f38f15 | 15756 | |
86c76c7b | 15757 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15758 | case R_PPC64_ADDR14_BRNTAKEN: |
15759 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15760 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15761 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15762 | /* Fall through. */ |
86c76c7b | 15763 | |
b25116a9 AM |
15764 | case R_PPC64_REL14: |
15765 | max_br_offset = 1 << 15; | |
1a0670f3 | 15766 | /* Fall through. */ |
5bd4f169 | 15767 | |
65f38f15 | 15768 | case R_PPC64_REL24: |
05d0e962 | 15769 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15770 | case R_PPC64_PLTCALL: |
5663e321 | 15771 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
15772 | /* Calls to functions with a different TOC, such as calls to |
15773 | shared objects, need to alter the TOC pointer. This is | |
15774 | done using a linkage stub. A REL24 branching to these | |
15775 | linkage stubs needs to be followed by a nop, as the nop | |
15776 | will be replaced with an instruction to restore the TOC | |
15777 | base pointer. */ | |
8387904d | 15778 | fdh = h; |
b31867b6 AM |
15779 | if (h != NULL |
15780 | && h->oh != NULL | |
15781 | && h->oh->is_func_descriptor) | |
15782 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15783 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15784 | htab); | |
5663e321 AM |
15785 | if ((r_type == R_PPC64_PLTCALL |
15786 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 15787 | && stub_entry != NULL |
05d0e962 AM |
15788 | && stub_entry->stub_type >= ppc_stub_plt_call |
15789 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15790 | stub_entry = NULL; |
15791 | ||
6abec6bc | 15792 | if (stub_entry != NULL |
d0abeec8 AM |
15793 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
15794 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 15795 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15796 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15797 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15798 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15799 | { |
b25116a9 | 15800 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 15801 | |
6e1816be AM |
15802 | if (stub_entry->stub_type == ppc_stub_plt_call |
15803 | && !htab->opd_abi | |
15804 | && htab->params->plt_localentry0 != 0 | |
9e51d549 | 15805 | && h != NULL |
6e1816be AM |
15806 | && is_elfv2_localentry0 (&h->elf)) |
15807 | { | |
15808 | /* The function doesn't use or change r2. */ | |
15809 | can_plt_call = TRUE; | |
15810 | } | |
05d0e962 AM |
15811 | else if (r_type == R_PPC64_REL24_NOTOC) |
15812 | { | |
15813 | /* NOTOC calls don't need to restore r2. */ | |
15814 | can_plt_call = TRUE; | |
15815 | } | |
6e1816be | 15816 | |
f378ab09 | 15817 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15818 | branch and link followed by a nop. The nop is |
15819 | replaced by an insn to restore r2. */ | |
6e1816be | 15820 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15821 | { |
ba8ca3e7 AM |
15822 | unsigned long br; |
15823 | ||
15824 | br = bfd_get_32 (input_bfd, | |
15825 | contents + rel->r_offset); | |
15826 | if ((br & 1) != 0) | |
41bd81ab | 15827 | { |
ba8ca3e7 AM |
15828 | unsigned long nop; |
15829 | ||
15830 | nop = bfd_get_32 (input_bfd, | |
15831 | contents + rel->r_offset + 4); | |
23cedd1d AM |
15832 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
15833 | can_plt_call = TRUE; | |
15834 | else if (nop == NOP | |
15835 | || nop == CROR_151515 | |
15836 | || nop == CROR_313131) | |
a7f2871e | 15837 | { |
ba8ca3e7 | 15838 | if (h != NULL |
ed7007c1 | 15839 | && is_tls_get_addr (&h->elf, htab) |
7c9cf415 | 15840 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15841 | { |
15842 | /* Special stub used, leave nop alone. */ | |
15843 | } | |
15844 | else | |
a078d95a AM |
15845 | bfd_put_32 (input_bfd, |
15846 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
15847 | contents + rel->r_offset + 4); |
15848 | can_plt_call = TRUE; | |
a7f2871e | 15849 | } |
41bd81ab | 15850 | } |
5bd4f169 | 15851 | } |
721956f4 | 15852 | |
ba8ca3e7 | 15853 | if (!can_plt_call && h != NULL) |
721956f4 | 15854 | { |
ba8ca3e7 AM |
15855 | const char *name = h->elf.root.root.string; |
15856 | ||
15857 | if (*name == '.') | |
15858 | ++name; | |
15859 | ||
15860 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
15861 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 15862 | { |
ba8ca3e7 AM |
15863 | /* Allow crt1 branch to go via a toc adjusting |
15864 | stub. Other calls that never return could do | |
15865 | the same, if we could detect such. */ | |
b25116a9 | 15866 | can_plt_call = TRUE; |
6ab189d5 | 15867 | } |
ba8ca3e7 AM |
15868 | } |
15869 | ||
15870 | if (!can_plt_call) | |
15871 | { | |
15872 | /* g++ as of 20130507 emits self-calls without a | |
15873 | following nop. This is arguably wrong since we | |
15874 | have conflicting information. On the one hand a | |
15875 | global symbol and on the other a local call | |
15876 | sequence, but don't error for this special case. | |
15877 | It isn't possible to cheaply verify we have | |
15878 | exactly such a call. Allow all calls to the same | |
15879 | section. */ | |
15880 | asection *code_sec = sec; | |
15881 | ||
15882 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15883 | { |
ba8ca3e7 AM |
15884 | bfd_vma off = (relocation + addend |
15885 | - sec->output_section->vma | |
15886 | - sec->output_offset); | |
bc30df16 | 15887 | |
ba8ca3e7 | 15888 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 15889 | } |
ba8ca3e7 AM |
15890 | if (code_sec == input_section) |
15891 | can_plt_call = TRUE; | |
15892 | } | |
15893 | ||
15894 | if (!can_plt_call) | |
15895 | { | |
05d0e962 AM |
15896 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15897 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15898 | info->callbacks->einfo |
695344c0 | 15899 | /* xgettext:c-format */ |
c1c8c1ef | 15900 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15901 | "(plt call stub)\n"), |
4805fc55 AM |
15902 | input_bfd, input_section, rel->r_offset, sym_name); |
15903 | else | |
15904 | info->callbacks->einfo | |
695344c0 | 15905 | /* xgettext:c-format */ |
c1c8c1ef | 15906 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15907 | "(toc save/adjust stub)\n"), |
4805fc55 | 15908 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15909 | |
15910 | bfd_set_error (bfd_error_bad_value); | |
15911 | ret = FALSE; | |
721956f4 AM |
15912 | } |
15913 | ||
b25116a9 | 15914 | if (can_plt_call |
05d0e962 AM |
15915 | && stub_entry->stub_type >= ppc_stub_plt_call |
15916 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15917 | unresolved_reloc = FALSE; |
15918 | } | |
15919 | ||
6abec6bc AM |
15920 | if ((stub_entry == NULL |
15921 | || stub_entry->stub_type == ppc_stub_long_branch | |
15922 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15923 | && get_opd_info (sec) != NULL) |
15924 | { | |
15925 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15926 | bfd_vma off = (relocation + addend |
15927 | - sec->output_section->vma | |
15928 | - sec->output_offset); | |
aef36ac1 | 15929 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15930 | if (dest != (bfd_vma) -1) |
15931 | { | |
15932 | relocation = dest; | |
15933 | addend = 0; | |
bc30df16 | 15934 | reloc_dest = DEST_OPD; |
8387904d AM |
15935 | } |
15936 | } | |
15937 | ||
b25116a9 AM |
15938 | /* If the branch is out of reach we ought to have a long |
15939 | branch stub. */ | |
15940 | from = (rel->r_offset | |
15941 | + input_section->output_offset | |
15942 | + input_section->output_section->vma); | |
15943 | ||
6911b7dc AM |
15944 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15945 | ? fdh->elf.other | |
15946 | : sym->st_other); | |
15947 | ||
6abec6bc AM |
15948 | if (stub_entry != NULL |
15949 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15950 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15951 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15952 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15953 | || (relocation + addend - from + max_br_offset | |
15954 | < 2 * max_br_offset))) | |
15955 | /* Don't use the stub if this branch is in range. */ | |
15956 | stub_entry = NULL; | |
b25116a9 | 15957 | |
05d0e962 AM |
15958 | if (stub_entry != NULL |
15959 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15960 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15961 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15962 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15963 | && (r_type != R_PPC64_REL24_NOTOC | |
15964 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15965 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15966 | && (relocation + addend - from + max_br_offset |
15967 | < 2 * max_br_offset)) | |
15968 | stub_entry = NULL; | |
15969 | ||
15970 | if (stub_entry != NULL | |
15971 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15972 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15973 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15974 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15975 | && r_type == R_PPC64_REL24_NOTOC | |
15976 | && (relocation + addend - from + max_br_offset | |
15977 | < 2 * max_br_offset)) | |
15978 | stub_entry = NULL; | |
15979 | ||
b25116a9 AM |
15980 | if (stub_entry != NULL) |
15981 | { | |
15982 | /* Munge up the value and addend so that we call the stub | |
15983 | rather than the procedure directly. */ | |
a4b6fadd AM |
15984 | asection *stub_sec = stub_entry->group->stub_sec; |
15985 | ||
15986 | if (stub_entry->stub_type == ppc_stub_save_res) | |
15987 | relocation += (stub_sec->output_offset | |
15988 | + stub_sec->output_section->vma | |
15989 | + stub_sec->size - htab->sfpr->size | |
15990 | - htab->sfpr->output_offset | |
15991 | - htab->sfpr->output_section->vma); | |
15992 | else | |
15993 | relocation = (stub_entry->stub_offset | |
15994 | + stub_sec->output_offset | |
15995 | + stub_sec->output_section->vma); | |
b25116a9 | 15996 | addend = 0; |
bc30df16 | 15997 | reloc_dest = DEST_STUB; |
3b421ab3 | 15998 | |
29433886 AM |
15999 | if ((((stub_entry->stub_type == ppc_stub_plt_call |
16000 | && ALWAYS_EMIT_R2SAVE) | |
16001 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
16002 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
16003 | && rel + 1 < relend | |
16004 | && rel[1].r_offset == rel->r_offset + 4 | |
16005 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
16006 | || ((stub_entry->stub_type == ppc_stub_long_branch_both | |
16007 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
16008 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
16009 | && r_type == R_PPC64_REL24_NOTOC)) | |
16010 | { | |
16011 | /* Skip over the r2 store at the start of the stub. */ | |
16012 | if (!(stub_entry->stub_type >= ppc_stub_plt_call | |
16013 | && htab->params->tls_get_addr_opt | |
16014 | && h != NULL | |
16015 | && is_tls_get_addr (&h->elf, htab))) | |
16016 | relocation += 4; | |
16017 | } | |
5663e321 AM |
16018 | |
16019 | if (r_type == R_PPC64_REL24_NOTOC | |
16020 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
16021 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
16022 | htab->notoc_plt = 1; | |
b25116a9 AM |
16023 | } |
16024 | ||
16025 | if (insn != 0) | |
16026 | { | |
794e51c0 | 16027 | if (is_isa_v2) |
721956f4 | 16028 | { |
b25116a9 AM |
16029 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
16030 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
16031 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
16032 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
16033 | insn |= 0x02 << 21; | |
16034 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
16035 | insn |= 0x08 << 21; | |
16036 | else | |
16037 | break; | |
16038 | } | |
16039 | else | |
16040 | { | |
16041 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 16042 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 16043 | insn ^= 0x01 << 21; |
721956f4 | 16044 | } |
b25116a9 | 16045 | |
95f0d0d2 | 16046 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 16047 | } |
e86ce104 | 16048 | |
06da1e8e AM |
16049 | /* NOP out calls to undefined weak functions. |
16050 | We can thus call a weak function without first | |
16051 | checking whether the function is defined. */ | |
b25116a9 | 16052 | else if (h != NULL |
039b3fef | 16053 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 16054 | && h->elf.dynindx == -1 |
05d0e962 AM |
16055 | && (r_type == R_PPC64_REL24 |
16056 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 16057 | && relocation == 0 |
4cc603a5 | 16058 | && addend == 0) |
e86ce104 | 16059 | { |
95f0d0d2 | 16060 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 16061 | goto copy_reloc; |
e86ce104 | 16062 | } |
65f38f15 | 16063 | break; |
066f4018 AM |
16064 | |
16065 | case R_PPC64_GOT16_DS: | |
6738c8a7 AM |
16066 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16067 | || !htab->do_toc_opt) | |
06507dab | 16068 | break; |
066f4018 AM |
16069 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16070 | if (relocation + addend - from + 0x8000 < 0x10000 | |
9e51d549 | 16071 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
066f4018 AM |
16072 | { |
16073 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 16074 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
16075 | { |
16076 | insn += (14u << 26) - (58u << 26); | |
16077 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16078 | r_type = R_PPC64_TOC16; | |
16079 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16080 | } | |
16081 | } | |
16082 | break; | |
16083 | ||
16084 | case R_PPC64_GOT16_LO_DS: | |
16085 | case R_PPC64_GOT16_HA: | |
6738c8a7 AM |
16086 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16087 | || !htab->do_toc_opt) | |
06507dab | 16088 | break; |
066f4018 AM |
16089 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16090 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
9e51d549 | 16091 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
066f4018 AM |
16092 | { |
16093 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
fba8689a AM |
16094 | if (r_type == R_PPC64_GOT16_LO_DS |
16095 | && (insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) | |
066f4018 AM |
16096 | { |
16097 | insn += (14u << 26) - (58u << 26); | |
16098 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16099 | r_type = R_PPC64_TOC16_LO; | |
16100 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16101 | } | |
fba8689a AM |
16102 | else if (r_type == R_PPC64_GOT16_HA |
16103 | && (insn & (0x3fu << 26)) == 15u << 26 /* addis */) | |
066f4018 AM |
16104 | { |
16105 | r_type = R_PPC64_TOC16_HA; | |
16106 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16107 | } | |
16108 | } | |
16109 | break; | |
4a421c53 AM |
16110 | |
16111 | case R_PPC64_GOT_PCREL34: | |
6738c8a7 AM |
16112 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16113 | || !htab->do_toc_opt) | |
06507dab | 16114 | break; |
4a421c53 AM |
16115 | from = (rel->r_offset |
16116 | + input_section->output_section->vma | |
16117 | + input_section->output_offset); | |
6738c8a7 | 16118 | if (!(relocation - from + (1ULL << 33) < 1ULL << 34 |
9e51d549 | 16119 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) |
6738c8a7 AM |
16120 | break; |
16121 | ||
16122 | offset = rel->r_offset; | |
16123 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16124 | pinsn <<= 32; | |
16125 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16126 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16127 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
16128 | break; | |
16129 | ||
16130 | /* Replace with paddi. */ | |
16131 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
16132 | r_type = R_PPC64_PCREL34; | |
16133 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16134 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
16135 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
16136 | /* Fall through. */ | |
4a421c53 AM |
16137 | |
16138 | case R_PPC64_PCREL34: | |
6738c8a7 AM |
16139 | if (!htab->params->no_pcrel_opt |
16140 | && rel + 1 < relend | |
16141 | && rel[1].r_offset == rel->r_offset | |
16142 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT) | |
9e51d549 | 16143 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
4a421c53 AM |
16144 | { |
16145 | offset = rel->r_offset; | |
16146 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16147 | pinsn <<= 32; | |
16148 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16149 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16150 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
16151 | | (14ULL << 26) /* paddi */)) | |
16152 | { | |
6738c8a7 AM |
16153 | bfd_vma off2 = rel[1].r_addend; |
16154 | if (off2 == 0) | |
16155 | /* zero means next insn. */ | |
16156 | off2 = 8; | |
16157 | off2 += offset; | |
16158 | if (off2 + 4 <= input_section->size) | |
4a421c53 | 16159 | { |
6738c8a7 AM |
16160 | uint64_t pinsn2; |
16161 | bfd_signed_vma addend_off; | |
16162 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); | |
16163 | pinsn2 <<= 32; | |
16164 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
4a421c53 | 16165 | { |
6738c8a7 AM |
16166 | if (off2 + 8 > input_section->size) |
16167 | break; | |
16168 | pinsn2 |= bfd_get_32 (input_bfd, | |
16169 | contents + off2 + 4); | |
16170 | } | |
16171 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) | |
16172 | { | |
16173 | addend += addend_off; | |
16174 | rel->r_addend = addend; | |
16175 | bfd_put_32 (input_bfd, pinsn >> 32, | |
16176 | contents + offset); | |
16177 | bfd_put_32 (input_bfd, pinsn, | |
16178 | contents + offset + 4); | |
16179 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
16180 | contents + off2); | |
4a421c53 | 16181 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
6738c8a7 AM |
16182 | bfd_put_32 (input_bfd, pinsn2, |
16183 | contents + off2 + 4); | |
4a421c53 AM |
16184 | } |
16185 | } | |
16186 | } | |
16187 | } | |
16188 | break; | |
65f38f15 | 16189 | } |
5bd4f169 | 16190 | |
411e1bfb | 16191 | tls_type = 0; |
23cedd1d | 16192 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
16193 | switch (r_type) |
16194 | { | |
16195 | default: | |
cf97bcb0 AM |
16196 | /* xgettext:c-format */ |
16197 | _bfd_error_handler (_("%pB: %s unsupported"), | |
16198 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 16199 | |
65f38f15 | 16200 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16201 | ret = FALSE; |
c316a17c | 16202 | goto copy_reloc; |
5bd4f169 | 16203 | |
65f38f15 | 16204 | case R_PPC64_NONE: |
411e1bfb | 16205 | case R_PPC64_TLS: |
727fc41e AM |
16206 | case R_PPC64_TLSGD: |
16207 | case R_PPC64_TLSLD: | |
3b421ab3 | 16208 | case R_PPC64_TOCSAVE: |
04c9666a AM |
16209 | case R_PPC64_GNU_VTINHERIT: |
16210 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 16211 | case R_PPC64_ENTRY: |
4a421c53 | 16212 | case R_PPC64_PCREL_OPT: |
c316a17c | 16213 | goto copy_reloc; |
5bd4f169 AM |
16214 | |
16215 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
16216 | address in the GOT as relocation value instead of the | |
411e1bfb | 16217 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 16218 | symbol and put the symbol value there. */ |
411e1bfb AM |
16219 | case R_PPC64_GOT_TLSGD16: |
16220 | case R_PPC64_GOT_TLSGD16_LO: | |
16221 | case R_PPC64_GOT_TLSGD16_HI: | |
16222 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 16223 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 16224 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
16225 | goto dogot; |
16226 | ||
16227 | case R_PPC64_GOT_TLSLD16: | |
16228 | case R_PPC64_GOT_TLSLD16_LO: | |
16229 | case R_PPC64_GOT_TLSLD16_HI: | |
16230 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 16231 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 16232 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
16233 | goto dogot; |
16234 | ||
16235 | case R_PPC64_GOT_TPREL16_DS: | |
16236 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16237 | case R_PPC64_GOT_TPREL16_HI: | |
16238 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 16239 | case R_PPC64_GOT_TPREL_PCREL34: |
411e1bfb AM |
16240 | tls_type = TLS_TLS | TLS_TPREL; |
16241 | goto dogot; | |
16242 | ||
16243 | case R_PPC64_GOT_DTPREL16_DS: | |
16244 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16245 | case R_PPC64_GOT_DTPREL16_HI: | |
16246 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 16247 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
16248 | tls_type = TLS_TLS | TLS_DTPREL; |
16249 | goto dogot; | |
16250 | ||
65f38f15 AM |
16251 | case R_PPC64_GOT16: |
16252 | case R_PPC64_GOT16_LO: | |
16253 | case R_PPC64_GOT16_HI: | |
16254 | case R_PPC64_GOT16_HA: | |
16255 | case R_PPC64_GOT16_DS: | |
16256 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 16257 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 16258 | dogot: |
5bd4f169 AM |
16259 | { |
16260 | /* Relocation is to the entry for this symbol in the global | |
16261 | offset table. */ | |
e717da7e | 16262 | asection *got; |
d881513a | 16263 | bfd_vma *offp; |
5bd4f169 | 16264 | bfd_vma off; |
d881513a | 16265 | unsigned long indx = 0; |
927be08e | 16266 | struct got_entry *ent; |
65f38f15 | 16267 | |
d881513a | 16268 | if (tls_type == (TLS_TLS | TLS_LD) |
9e51d549 | 16269 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
927be08e | 16270 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 16271 | else |
5bd4f169 | 16272 | { |
d881513a AM |
16273 | if (h != NULL) |
16274 | { | |
f0158f44 AM |
16275 | if (!htab->elf.dynamic_sections_created |
16276 | || h->elf.dynindx == -1 | |
16277 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 16278 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
16279 | /* This is actually a static link, or it is a |
16280 | -Bsymbolic link and the symbol is defined | |
16281 | locally, or the symbol was forced to be local | |
16282 | because of a version file. */ | |
16283 | ; | |
16284 | else | |
16285 | { | |
039b3fef | 16286 | indx = h->elf.dynindx; |
d881513a AM |
16287 | unresolved_reloc = FALSE; |
16288 | } | |
039b3fef | 16289 | ent = h->elf.got.glist; |
d881513a | 16290 | } |
411e1bfb | 16291 | else |
5bd4f169 | 16292 | { |
d881513a AM |
16293 | if (local_got_ents == NULL) |
16294 | abort (); | |
16295 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 16296 | } |
d881513a AM |
16297 | |
16298 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 16299 | if (ent->addend == orig_rel.r_addend |
e717da7e | 16300 | && ent->owner == input_bfd |
d881513a AM |
16301 | && ent->tls_type == tls_type) |
16302 | break; | |
5bd4f169 | 16303 | } |
411e1bfb | 16304 | |
927be08e AM |
16305 | if (ent == NULL) |
16306 | abort (); | |
16307 | if (ent->is_indirect) | |
16308 | ent = ent->got.ent; | |
16309 | offp = &ent->got.offset; | |
16310 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
16311 | if (got == NULL) |
16312 | abort (); | |
16313 | ||
411e1bfb AM |
16314 | /* The offset must always be a multiple of 8. We use the |
16315 | least significant bit to record whether we have already | |
16316 | processed this entry. */ | |
d881513a | 16317 | off = *offp; |
411e1bfb AM |
16318 | if ((off & 1) != 0) |
16319 | off &= ~1; | |
5bd4f169 AM |
16320 | else |
16321 | { | |
411e1bfb AM |
16322 | /* Generate relocs for the dynamic linker, except in |
16323 | the case of TLSLD where we'll use one entry per | |
16324 | module. */ | |
25f23106 AM |
16325 | asection *relgot; |
16326 | bfd_boolean ifunc; | |
e717da7e | 16327 | |
d881513a | 16328 | *offp = off | 1; |
25f23106 AM |
16329 | relgot = NULL; |
16330 | ifunc = (h != NULL | |
16331 | ? h->elf.type == STT_GNU_IFUNC | |
16332 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 16333 | if (ifunc) |
82e66161 AM |
16334 | { |
16335 | relgot = htab->elf.irelplt; | |
efb2a7b4 | 16336 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16337 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16338 | } |
f0158f44 AM |
16339 | else if (indx != 0 |
16340 | || (bfd_link_pic (info) | |
16341 | && (h == NULL | |
f749f26e AM |
16342 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
16343 | && !(tls_type != 0 | |
f15d0b54 | 16344 | && bfd_link_executable (info) |
9e51d549 AM |
16345 | && (h == NULL |
16346 | || SYMBOL_REFERENCES_LOCAL (info, | |
16347 | &h->elf))))) | |
19e08130 | 16348 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 16349 | if (relgot != NULL) |
5bd4f169 | 16350 | { |
e717da7e AM |
16351 | outrel.r_offset = (got->output_section->vma |
16352 | + got->output_offset | |
411e1bfb | 16353 | + off); |
133a1f60 | 16354 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 16355 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 16356 | { |
411e1bfb | 16357 | outrel.r_addend = 0; |
e515b051 | 16358 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
16359 | if (tls_type == (TLS_TLS | TLS_GD)) |
16360 | { | |
e717da7e AM |
16361 | loc = relgot->contents; |
16362 | loc += (relgot->reloc_count++ | |
d881513a AM |
16363 | * sizeof (Elf64_External_Rela)); |
16364 | bfd_elf64_swap_reloca_out (output_bfd, | |
16365 | &outrel, loc); | |
e515b051 | 16366 | outrel.r_offset += 8; |
133a1f60 | 16367 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
16368 | outrel.r_info |
16369 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 16370 | } |
411e1bfb | 16371 | } |
951fd09b | 16372 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 16373 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 16374 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 16375 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
16376 | else if (indx != 0) |
16377 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
16378 | else | |
81407a69 | 16379 | { |
25f23106 AM |
16380 | if (ifunc) |
16381 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16382 | else | |
16383 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
16384 | |
16385 | /* Write the .got section contents for the sake | |
16386 | of prelink. */ | |
e717da7e | 16387 | loc = got->contents + off; |
23fbd6fa JJ |
16388 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
16389 | loc); | |
81407a69 | 16390 | } |
81407a69 AM |
16391 | |
16392 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
16393 | { |
16394 | outrel.r_addend += relocation; | |
16395 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
16396 | { |
16397 | if (htab->elf.tls_sec == NULL) | |
16398 | outrel.r_addend = 0; | |
16399 | else | |
16400 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
16401 | } | |
e515b051 | 16402 | } |
e717da7e AM |
16403 | loc = relgot->contents; |
16404 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
16405 | * sizeof (Elf64_External_Rela)); |
16406 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
16407 | } | |
16408 | ||
ad8e1ba5 | 16409 | /* Init the .got section contents here if we're not |
81407a69 | 16410 | emitting a reloc. */ |
d881513a | 16411 | else |
411e1bfb | 16412 | { |
133a1f60 | 16413 | relocation += orig_rel.r_addend; |
f0158f44 | 16414 | if (tls_type != 0) |
411e1bfb | 16415 | { |
989f9879 AM |
16416 | if (htab->elf.tls_sec == NULL) |
16417 | relocation = 0; | |
16418 | else | |
16419 | { | |
f0158f44 AM |
16420 | if (tls_type & TLS_LD) |
16421 | relocation = 0; | |
16422 | else | |
16423 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 16424 | if (tls_type & TLS_TPREL) |
989f9879 AM |
16425 | relocation += DTP_OFFSET - TP_OFFSET; |
16426 | } | |
5bd4f169 | 16427 | |
f0158f44 | 16428 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
16429 | { |
16430 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16431 | got->contents + off + 8); |
676ee2b5 | 16432 | relocation = 1; |
7b609f53 | 16433 | } |
411e1bfb AM |
16434 | } |
16435 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16436 | got->contents + off); |
5bd4f169 AM |
16437 | } |
16438 | } | |
16439 | ||
65f38f15 AM |
16440 | if (off >= (bfd_vma) -2) |
16441 | abort (); | |
16442 | ||
bf102f86 | 16443 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 16444 | addend = 0; |
c213164a | 16445 | if (!(r_type == R_PPC64_GOT_PCREL34 |
87c69f97 AM |
16446 | || r_type == R_PPC64_GOT_TLSGD_PCREL34 |
16447 | || r_type == R_PPC64_GOT_TLSLD_PCREL34 | |
16448 | || r_type == R_PPC64_GOT_TPREL_PCREL34 | |
16449 | || r_type == R_PPC64_GOT_DTPREL_PCREL34)) | |
5663e321 | 16450 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 16451 | } |
65f38f15 AM |
16452 | break; |
16453 | ||
16454 | case R_PPC64_PLT16_HA: | |
16455 | case R_PPC64_PLT16_HI: | |
16456 | case R_PPC64_PLT16_LO: | |
08be3224 | 16457 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
16458 | case R_PPC64_PLT_PCREL34: |
16459 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
16460 | case R_PPC64_PLT32: |
16461 | case R_PPC64_PLT64: | |
23cedd1d | 16462 | case R_PPC64_PLTSEQ: |
5663e321 | 16463 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 16464 | case R_PPC64_PLTCALL: |
5663e321 | 16465 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
16466 | /* Relocation is to the entry for this symbol in the |
16467 | procedure linkage table. */ | |
23cedd1d | 16468 | unresolved_reloc = TRUE; |
cbf95972 AM |
16469 | { |
16470 | struct plt_entry **plt_list = NULL; | |
16471 | if (h != NULL) | |
16472 | plt_list = &h->elf.plt.plist; | |
16473 | else if (local_got_ents != NULL) | |
16474 | { | |
16475 | struct plt_entry **local_plt = (struct plt_entry **) | |
16476 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 16477 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
16478 | } |
16479 | if (plt_list) | |
16480 | { | |
16481 | struct plt_entry *ent; | |
65f38f15 | 16482 | |
cbf95972 AM |
16483 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
16484 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 16485 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
16486 | { |
16487 | asection *plt; | |
08be3224 | 16488 | bfd_vma got; |
cbf95972 AM |
16489 | |
16490 | plt = htab->elf.splt; | |
16491 | if (!htab->elf.dynamic_sections_created | |
16492 | || h == NULL | |
16493 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
16494 | { |
16495 | if (h != NULL | |
16496 | ? h->elf.type == STT_GNU_IFUNC | |
16497 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16498 | plt = htab->elf.iplt; | |
16499 | else | |
16500 | plt = htab->pltlocal; | |
16501 | } | |
16502 | relocation = (plt->output_section->vma | |
16503 | + plt->output_offset | |
16504 | + ent->plt.offset); | |
08be3224 | 16505 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
16506 | || r_type == R_PPC64_PLT16_HI |
16507 | || r_type == R_PPC64_PLT16_LO | |
16508 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
16509 | { |
16510 | got = (elf_gp (output_bfd) | |
16511 | + htab->sec_info[input_section->id].toc_off); | |
16512 | relocation -= got; | |
16513 | } | |
133a1f60 | 16514 | addend = 0; |
cbf95972 AM |
16515 | unresolved_reloc = FALSE; |
16516 | break; | |
16517 | } | |
16518 | } | |
16519 | } | |
65f38f15 | 16520 | break; |
5bd4f169 | 16521 | |
0b13192e AM |
16522 | case R_PPC64_TOC: |
16523 | /* Relocation value is TOC base. */ | |
16524 | relocation = TOCstart; | |
cf35638d | 16525 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 16526 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
16527 | else if (unresolved_reloc) |
16528 | ; | |
6f20ed8a AM |
16529 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
16530 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
16531 | else |
16532 | unresolved_reloc = TRUE; | |
ab96bf03 | 16533 | goto dodyn; |
0b13192e | 16534 | |
5bd4f169 AM |
16535 | /* TOC16 relocs. We want the offset relative to the TOC base, |
16536 | which is the address of the start of the TOC plus 0x8000. | |
16537 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
16538 | in this order. */ | |
65f38f15 AM |
16539 | case R_PPC64_TOC16: |
16540 | case R_PPC64_TOC16_LO: | |
16541 | case R_PPC64_TOC16_HI: | |
16542 | case R_PPC64_TOC16_DS: | |
16543 | case R_PPC64_TOC16_LO_DS: | |
16544 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 16545 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
16546 | if (h != NULL) |
16547 | goto dodyn; | |
5bd4f169 AM |
16548 | break; |
16549 | ||
16550 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
16551 | case R_PPC64_SECTOFF: |
16552 | case R_PPC64_SECTOFF_LO: | |
16553 | case R_PPC64_SECTOFF_HI: | |
16554 | case R_PPC64_SECTOFF_DS: | |
16555 | case R_PPC64_SECTOFF_LO_DS: | |
16556 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 16557 | if (sec != NULL) |
65f38f15 | 16558 | addend -= sec->output_section->vma; |
5bd4f169 AM |
16559 | break; |
16560 | ||
25f23106 AM |
16561 | case R_PPC64_REL16: |
16562 | case R_PPC64_REL16_LO: | |
16563 | case R_PPC64_REL16_HI: | |
16564 | case R_PPC64_REL16_HA: | |
4a969973 AM |
16565 | case R_PPC64_REL16_HIGH: |
16566 | case R_PPC64_REL16_HIGHA: | |
16567 | case R_PPC64_REL16_HIGHER: | |
16568 | case R_PPC64_REL16_HIGHERA: | |
16569 | case R_PPC64_REL16_HIGHEST: | |
16570 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
16571 | case R_PPC64_REL16_HIGHER34: |
16572 | case R_PPC64_REL16_HIGHERA34: | |
16573 | case R_PPC64_REL16_HIGHEST34: | |
16574 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 16575 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
16576 | case R_PPC64_REL14: |
16577 | case R_PPC64_REL14_BRNTAKEN: | |
16578 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 16579 | case R_PPC64_REL24: |
05d0e962 | 16580 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
16581 | case R_PPC64_PCREL34: |
16582 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
16583 | break; |
16584 | ||
411e1bfb AM |
16585 | case R_PPC64_TPREL16: |
16586 | case R_PPC64_TPREL16_LO: | |
16587 | case R_PPC64_TPREL16_HI: | |
16588 | case R_PPC64_TPREL16_HA: | |
16589 | case R_PPC64_TPREL16_DS: | |
16590 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
16591 | case R_PPC64_TPREL16_HIGH: |
16592 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
16593 | case R_PPC64_TPREL16_HIGHER: |
16594 | case R_PPC64_TPREL16_HIGHERA: | |
16595 | case R_PPC64_TPREL16_HIGHEST: | |
16596 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 16597 | case R_PPC64_TPREL34: |
766bc656 AM |
16598 | if (h != NULL |
16599 | && h->elf.root.type == bfd_link_hash_undefweak | |
16600 | && h->elf.dynindx == -1) | |
16601 | { | |
16602 | /* Make this relocation against an undefined weak symbol | |
16603 | resolve to zero. This is really just a tweak, since | |
16604 | code using weak externs ought to check that they are | |
16605 | defined before using them. */ | |
16606 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
16607 | ||
95f0d0d2 | 16608 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
16609 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
16610 | if (insn != 0) | |
95f0d0d2 | 16611 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
16612 | break; |
16613 | } | |
989f9879 AM |
16614 | if (htab->elf.tls_sec != NULL) |
16615 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
16616 | /* The TPREL16 relocs shouldn't really be used in shared |
16617 | libs or with non-local symbols as that will result in | |
16618 | DT_TEXTREL being set, but support them anyway. */ | |
16619 | goto dodyn; | |
411e1bfb AM |
16620 | |
16621 | case R_PPC64_DTPREL16: | |
16622 | case R_PPC64_DTPREL16_LO: | |
16623 | case R_PPC64_DTPREL16_HI: | |
16624 | case R_PPC64_DTPREL16_HA: | |
16625 | case R_PPC64_DTPREL16_DS: | |
16626 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
16627 | case R_PPC64_DTPREL16_HIGH: |
16628 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
16629 | case R_PPC64_DTPREL16_HIGHER: |
16630 | case R_PPC64_DTPREL16_HIGHERA: | |
16631 | case R_PPC64_DTPREL16_HIGHEST: | |
16632 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 16633 | case R_PPC64_DTPREL34: |
989f9879 AM |
16634 | if (htab->elf.tls_sec != NULL) |
16635 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
16636 | break; |
16637 | ||
45965137 AM |
16638 | case R_PPC64_ADDR64_LOCAL: |
16639 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
16640 | ? h->elf.other | |
16641 | : sym->st_other); | |
16642 | break; | |
16643 | ||
e515b051 AM |
16644 | case R_PPC64_DTPMOD64: |
16645 | relocation = 1; | |
16646 | addend = 0; | |
16647 | goto dodyn; | |
16648 | ||
411e1bfb | 16649 | case R_PPC64_TPREL64: |
989f9879 AM |
16650 | if (htab->elf.tls_sec != NULL) |
16651 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
16652 | goto dodyn; |
16653 | ||
16654 | case R_PPC64_DTPREL64: | |
989f9879 AM |
16655 | if (htab->elf.tls_sec != NULL) |
16656 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 16657 | /* Fall through. */ |
411e1bfb | 16658 | |
65f38f15 AM |
16659 | /* Relocations that may need to be propagated if this is a |
16660 | dynamic object. */ | |
04c9666a | 16661 | case R_PPC64_REL30: |
65f38f15 AM |
16662 | case R_PPC64_REL32: |
16663 | case R_PPC64_REL64: | |
16664 | case R_PPC64_ADDR14: | |
16665 | case R_PPC64_ADDR14_BRNTAKEN: | |
16666 | case R_PPC64_ADDR14_BRTAKEN: | |
16667 | case R_PPC64_ADDR16: | |
16668 | case R_PPC64_ADDR16_DS: | |
16669 | case R_PPC64_ADDR16_HA: | |
16670 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16671 | case R_PPC64_ADDR16_HIGH: |
16672 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16673 | case R_PPC64_ADDR16_HIGHER: |
16674 | case R_PPC64_ADDR16_HIGHERA: | |
16675 | case R_PPC64_ADDR16_HIGHEST: | |
16676 | case R_PPC64_ADDR16_HIGHESTA: | |
16677 | case R_PPC64_ADDR16_LO: | |
16678 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
16679 | case R_PPC64_ADDR16_HIGHER34: |
16680 | case R_PPC64_ADDR16_HIGHERA34: | |
16681 | case R_PPC64_ADDR16_HIGHEST34: | |
16682 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 16683 | case R_PPC64_ADDR24: |
65f38f15 AM |
16684 | case R_PPC64_ADDR32: |
16685 | case R_PPC64_ADDR64: | |
16686 | case R_PPC64_UADDR16: | |
16687 | case R_PPC64_UADDR32: | |
16688 | case R_PPC64_UADDR64: | |
5663e321 AM |
16689 | case R_PPC64_D34: |
16690 | case R_PPC64_D34_LO: | |
16691 | case R_PPC64_D34_HI30: | |
16692 | case R_PPC64_D34_HA30: | |
16693 | case R_PPC64_D28: | |
411e1bfb | 16694 | dodyn: |
5d1634d7 | 16695 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16696 | break; |
16697 | ||
41bd81ab AM |
16698 | if (NO_OPD_RELOCS && is_opd) |
16699 | break; | |
16700 | ||
8a9e8e72 | 16701 | if (bfd_link_pic (info) |
b1b07054 | 16702 | ? ((h == NULL |
190eb1dd | 16703 | || h->elf.dyn_relocs != NULL) |
b1b07054 AM |
16704 | && ((h != NULL && pc_dynrelocs (h)) |
16705 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 | 16706 | : (h != NULL |
190eb1dd | 16707 | ? h->elf.dyn_relocs != NULL |
d311bc8b | 16708 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16709 | { |
b34976b6 | 16710 | bfd_boolean skip, relocate; |
65f38f15 | 16711 | asection *sreloc; |
1cf1f670 | 16712 | bfd_vma out_off; |
82e66161 | 16713 | long indx = 0; |
65f38f15 AM |
16714 | |
16715 | /* When generating a dynamic object, these relocations | |
16716 | are copied into the output file to be resolved at run | |
16717 | time. */ | |
16718 | ||
b34976b6 AM |
16719 | skip = FALSE; |
16720 | relocate = FALSE; | |
65f38f15 | 16721 | |
1cf1f670 AM |
16722 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16723 | input_section, rel->r_offset); | |
16724 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 16725 | skip = TRUE; |
1cf1f670 | 16726 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 16727 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
16728 | out_off += (input_section->output_section->vma |
16729 | + input_section->output_offset); | |
16730 | outrel.r_offset = out_off; | |
411e1bfb | 16731 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16732 | |
1cf1f670 AM |
16733 | /* Optimize unaligned reloc use. */ |
16734 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16735 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16736 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16737 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16738 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16739 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16740 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16741 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16742 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16743 | ||
65f38f15 | 16744 | if (skip) |
0bb2d96a | 16745 | memset (&outrel, 0, sizeof outrel); |
9e51d549 AM |
16746 | else if (h != NULL |
16747 | && !SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
0b13192e AM |
16748 | && !is_opd |
16749 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16750 | { |
82e66161 AM |
16751 | indx = h->elf.dynindx; |
16752 | BFD_ASSERT (indx != -1); | |
16753 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16754 | } |
65f38f15 AM |
16755 | else |
16756 | { | |
41bd81ab AM |
16757 | /* This symbol is local, or marked to become local, |
16758 | or this is an opd section reloc which must point | |
16759 | at a local function. */ | |
65f38f15 | 16760 | outrel.r_addend += relocation; |
e86ce104 | 16761 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16762 | { |
3fad3c7c | 16763 | if (is_opd && h != NULL) |
afbe61cf AM |
16764 | { |
16765 | /* Lie about opd entries. This case occurs | |
16766 | when building shared libraries and we | |
16767 | reference a function in another shared | |
3fad3c7c AM |
16768 | lib. The same thing happens for a weak |
16769 | definition in an application that's | |
16770 | overridden by a strong definition in a | |
16771 | shared lib. (I believe this is a generic | |
16772 | bug in binutils handling of weak syms.) | |
16773 | In these cases we won't use the opd | |
1e2f5b6e | 16774 | entry in this lib. */ |
b34976b6 | 16775 | unresolved_reloc = FALSE; |
afbe61cf | 16776 | } |
25f23106 AM |
16777 | if (!is_opd |
16778 | && r_type == R_PPC64_ADDR64 | |
16779 | && (h != NULL | |
16780 | ? h->elf.type == STT_GNU_IFUNC | |
16781 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16782 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16783 | else | |
16784 | { | |
16785 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16786 | |
25f23106 AM |
16787 | /* We need to relocate .opd contents for ld.so. |
16788 | Prelink also wants simple and consistent rules | |
16789 | for relocs. This make all RELATIVE relocs have | |
16790 | *r_offset equal to r_addend. */ | |
16791 | relocate = TRUE; | |
16792 | } | |
65f38f15 AM |
16793 | } |
16794 | else | |
16795 | { | |
25f23106 AM |
16796 | if (h != NULL |
16797 | ? h->elf.type == STT_GNU_IFUNC | |
16798 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16799 | { | |
25f53a85 | 16800 | info->callbacks->einfo |
695344c0 | 16801 | /* xgettext:c-format */ |
174d0a74 | 16802 | (_("%H: %s for indirect " |
c1c8c1ef | 16803 | "function `%pT' unsupported\n"), |
25f53a85 | 16804 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16805 | ppc64_elf_howto_table[r_type]->name, |
16806 | sym_name); | |
16807 | ret = FALSE; | |
16808 | } | |
cf35638d | 16809 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16810 | ; |
16811 | else if (sec == NULL || sec->owner == NULL) | |
16812 | { | |
16813 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 16814 | return FALSE; |
65f38f15 AM |
16815 | } |
16816 | else | |
16817 | { | |
f26a3287 | 16818 | asection *osec = sec->output_section; |
65f38f15 | 16819 | |
f26a3287 AM |
16820 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
16821 | { | |
16822 | /* TLS symbol values are relative to the | |
16823 | TLS segment. Dynamic relocations for | |
16824 | local TLS symbols therefore can't be | |
16825 | reduced to a relocation against their | |
16826 | section symbol because it holds the | |
16827 | address of the section, not a value | |
16828 | relative to the TLS segment. We could | |
16829 | change the .tdata dynamic section symbol | |
16830 | to be zero value but STN_UNDEF works | |
16831 | and is used elsewhere, eg. for TPREL64 | |
16832 | GOT relocs against local TLS symbols. */ | |
16833 | osec = htab->elf.tls_sec; | |
16834 | indx = 0; | |
16835 | } | |
16836 | else | |
74541ad4 | 16837 | { |
74541ad4 | 16838 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
16839 | if (indx == 0) |
16840 | { | |
16841 | if ((osec->flags & SEC_READONLY) == 0 | |
16842 | && htab->elf.data_index_section != NULL) | |
16843 | osec = htab->elf.data_index_section; | |
16844 | else | |
16845 | osec = htab->elf.text_index_section; | |
16846 | indx = elf_section_data (osec)->dynindx; | |
16847 | } | |
16848 | BFD_ASSERT (indx != 0); | |
74541ad4 | 16849 | } |
74541ad4 | 16850 | |
65f38f15 AM |
16851 | /* We are turning this relocation into one |
16852 | against a section symbol, so subtract out | |
16853 | the output section's address but not the | |
16854 | offset of the input section in the output | |
16855 | section. */ | |
16856 | outrel.r_addend -= osec->vma; | |
16857 | } | |
16858 | ||
16859 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16860 | } | |
16861 | } | |
16862 | ||
16863 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16864 | if (h != NULL |
16865 | ? h->elf.type == STT_GNU_IFUNC | |
16866 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16867 | { |
16868 | sreloc = htab->elf.irelplt; | |
efb2a7b4 | 16869 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16870 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16871 | } |
65f38f15 AM |
16872 | if (sreloc == NULL) |
16873 | abort (); | |
16874 | ||
dfbb6ac9 AM |
16875 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16876 | >= sreloc->size) | |
16877 | abort (); | |
947216bf AM |
16878 | loc = sreloc->contents; |
16879 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16880 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16881 | ||
e59a1001 AM |
16882 | if (!warned_dynamic |
16883 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
16884 | { | |
16885 | info->callbacks->einfo | |
16886 | /* xgettext:c-format */ | |
16887 | (_("%X%P: %pB: %s against %pT " | |
16888 | "is not supported by glibc as a dynamic relocation\n"), | |
16889 | input_bfd, | |
16890 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
16891 | sym_name); | |
16892 | warned_dynamic = TRUE; | |
16893 | } | |
16894 | ||
65f38f15 AM |
16895 | /* If this reloc is against an external symbol, it will |
16896 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16897 | anything now. However, for the sake of prelink ensure |
16898 | that the section contents are a known value. */ | |
2cdcc330 | 16899 | if (!relocate) |
81407a69 AM |
16900 | { |
16901 | unresolved_reloc = FALSE; | |
16902 | /* The value chosen here is quite arbitrary as ld.so | |
16903 | ignores section contents except for the special | |
16904 | case of .opd where the contents might be accessed | |
16905 | before relocation. Choose zero, as that won't | |
16906 | cause reloc overflow. */ | |
16907 | relocation = 0; | |
16908 | addend = 0; | |
16909 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16910 | to improve backward compatibility with older | |
16911 | versions of ld. */ | |
16912 | if (r_type == R_PPC64_ADDR64) | |
16913 | addend = outrel.r_addend; | |
16914 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16915 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16916 | addend = outrel.r_offset; |
81407a69 | 16917 | } |
65f38f15 | 16918 | } |
5bd4f169 AM |
16919 | break; |
16920 | ||
65f38f15 AM |
16921 | case R_PPC64_COPY: |
16922 | case R_PPC64_GLOB_DAT: | |
16923 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16924 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16925 | case R_PPC64_RELATIVE: |
16926 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16927 | files. */ | |
ae9a127f | 16928 | /* Fall through. */ |
65f38f15 AM |
16929 | |
16930 | case R_PPC64_PLTGOT16: | |
16931 | case R_PPC64_PLTGOT16_DS: | |
16932 | case R_PPC64_PLTGOT16_HA: | |
16933 | case R_PPC64_PLTGOT16_HI: | |
16934 | case R_PPC64_PLTGOT16_LO: | |
16935 | case R_PPC64_PLTGOT16_LO_DS: | |
16936 | case R_PPC64_PLTREL32: | |
16937 | case R_PPC64_PLTREL64: | |
16938 | /* These ones haven't been implemented yet. */ | |
16939 | ||
25f53a85 | 16940 | info->callbacks->einfo |
695344c0 | 16941 | /* xgettext:c-format */ |
c1c8c1ef | 16942 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16943 | input_bfd, |
4ce794b7 | 16944 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16945 | |
16946 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 16947 | ret = FALSE; |
c316a17c | 16948 | goto copy_reloc; |
65f38f15 | 16949 | } |
5bd4f169 | 16950 | |
67f0cbdb AM |
16951 | /* Multi-instruction sequences that access the TOC can be |
16952 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16953 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16954 | switch (r_type) |
16955 | { | |
16956 | default: | |
16957 | break; | |
16958 | ||
16959 | case R_PPC64_GOT_TLSLD16_HI: | |
16960 | case R_PPC64_GOT_TLSGD16_HI: | |
16961 | case R_PPC64_GOT_TPREL16_HI: | |
16962 | case R_PPC64_GOT_DTPREL16_HI: | |
16963 | case R_PPC64_GOT16_HI: | |
16964 | case R_PPC64_TOC16_HI: | |
16965 | /* These relocs would only be useful if building up an | |
16966 | offset to later add to r2, perhaps in an indexed | |
16967 | addressing mode instruction. Don't try to optimize. | |
16968 | Unfortunately, the possibility of someone building up an | |
16969 | offset like this or even with the HA relocs, means that | |
16970 | we need to check the high insn when optimizing the low | |
16971 | insn. */ | |
16972 | break; | |
16973 | ||
5663e321 AM |
16974 | case R_PPC64_PLTCALL_NOTOC: |
16975 | if (!unresolved_reloc) | |
16976 | htab->notoc_plt = 1; | |
16977 | /* Fall through. */ | |
23cedd1d AM |
16978 | case R_PPC64_PLTCALL: |
16979 | if (unresolved_reloc) | |
16980 | { | |
16981 | /* No plt entry. Make this into a direct call. */ | |
16982 | bfd_byte *p = contents + rel->r_offset; | |
16983 | insn = bfd_get_32 (input_bfd, p); | |
16984 | insn &= 1; | |
16985 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
16986 | if (r_type == R_PPC64_PLTCALL) |
16987 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
16988 | unresolved_reloc = save_unresolved_reloc; |
16989 | r_type = R_PPC64_REL24; | |
16990 | } | |
16991 | break; | |
16992 | ||
5663e321 | 16993 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
16994 | case R_PPC64_PLTSEQ: |
16995 | if (unresolved_reloc) | |
16996 | { | |
16997 | unresolved_reloc = FALSE; | |
16998 | goto nop_it; | |
16999 | } | |
17000 | break; | |
17001 | ||
5663e321 AM |
17002 | case R_PPC64_PLT_PCREL34_NOTOC: |
17003 | if (!unresolved_reloc) | |
17004 | htab->notoc_plt = 1; | |
17005 | /* Fall through. */ | |
17006 | case R_PPC64_PLT_PCREL34: | |
17007 | if (unresolved_reloc) | |
17008 | { | |
17009 | bfd_byte *p = contents + rel->r_offset; | |
17010 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
17011 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
17012 | unresolved_reloc = FALSE; | |
17013 | goto copy_reloc; | |
17014 | } | |
17015 | break; | |
17016 | ||
23cedd1d AM |
17017 | case R_PPC64_PLT16_HA: |
17018 | if (unresolved_reloc) | |
17019 | { | |
17020 | unresolved_reloc = FALSE; | |
17021 | goto nop_it; | |
17022 | } | |
17023 | /* Fall through. */ | |
67f0cbdb AM |
17024 | case R_PPC64_GOT_TLSLD16_HA: |
17025 | case R_PPC64_GOT_TLSGD16_HA: | |
17026 | case R_PPC64_GOT_TPREL16_HA: | |
17027 | case R_PPC64_GOT_DTPREL16_HA: | |
17028 | case R_PPC64_GOT16_HA: | |
17029 | case R_PPC64_TOC16_HA: | |
98528052 | 17030 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 17031 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 17032 | { |
23cedd1d AM |
17033 | bfd_byte *p; |
17034 | nop_it: | |
17035 | p = contents + (rel->r_offset & ~3); | |
98528052 | 17036 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 17037 | goto copy_reloc; |
98528052 | 17038 | } |
67f0cbdb AM |
17039 | break; |
17040 | ||
23cedd1d AM |
17041 | case R_PPC64_PLT16_LO: |
17042 | case R_PPC64_PLT16_LO_DS: | |
17043 | if (unresolved_reloc) | |
17044 | { | |
17045 | unresolved_reloc = FALSE; | |
17046 | goto nop_it; | |
17047 | } | |
17048 | /* Fall through. */ | |
67f0cbdb AM |
17049 | case R_PPC64_GOT_TLSLD16_LO: |
17050 | case R_PPC64_GOT_TLSGD16_LO: | |
17051 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17052 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17053 | case R_PPC64_GOT16_LO: | |
17054 | case R_PPC64_GOT16_LO_DS: | |
17055 | case R_PPC64_TOC16_LO: | |
17056 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 17057 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 17058 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
17059 | { |
17060 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17061 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 17062 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
17063 | { |
17064 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 17065 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
17066 | insn |= (14u << 26) | (2 << 16); |
17067 | } | |
17068 | else | |
67f0cbdb | 17069 | { |
98528052 AM |
17070 | insn &= ~(0x1f << 16); |
17071 | insn |= 2 << 16; | |
67f0cbdb | 17072 | } |
560c8763 | 17073 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
17074 | } |
17075 | break; | |
9a23f96e AM |
17076 | |
17077 | case R_PPC64_TPREL16_HA: | |
17078 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
17079 | { | |
17080 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
252dcdf4 AM |
17081 | bfd_put_32 (input_bfd, NOP, p); |
17082 | goto copy_reloc; | |
9a23f96e AM |
17083 | } |
17084 | break; | |
17085 | ||
17086 | case R_PPC64_TPREL16_LO: | |
17087 | case R_PPC64_TPREL16_LO_DS: | |
17088 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
17089 | { | |
17090 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17091 | insn = bfd_get_32 (input_bfd, p); | |
17092 | insn &= ~(0x1f << 16); | |
17093 | insn |= 13 << 16; | |
17094 | bfd_put_32 (input_bfd, insn, p); | |
17095 | } | |
17096 | break; | |
67f0cbdb AM |
17097 | } |
17098 | ||
65f38f15 AM |
17099 | /* Do any further special processing. */ |
17100 | switch (r_type) | |
17101 | { | |
17102 | default: | |
17103 | break; | |
17104 | ||
25f23106 | 17105 | case R_PPC64_REL16_HA: |
4a969973 AM |
17106 | case R_PPC64_REL16_HIGHA: |
17107 | case R_PPC64_REL16_HIGHERA: | |
17108 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 17109 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
17110 | case R_PPC64_ADDR16_HA: |
17111 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
17112 | case R_PPC64_ADDR16_HIGHERA: |
17113 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
17114 | case R_PPC64_TOC16_HA: |
17115 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 17116 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 17117 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 17118 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 17119 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
17120 | case R_PPC64_DTPREL16_HA: |
17121 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 17122 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 17123 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
17124 | /* It's just possible that this symbol is a weak symbol |
17125 | that's not actually defined anywhere. In that case, | |
17126 | 'sec' would be NULL, and we should leave the symbol | |
17127 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
17128 | if (sec == NULL) |
17129 | break; | |
1a0670f3 | 17130 | /* Fall through. */ |
5c5f6e17 AM |
17131 | |
17132 | case R_PPC64_GOT16_HA: | |
17133 | case R_PPC64_PLTGOT16_HA: | |
17134 | case R_PPC64_PLT16_HA: | |
17135 | case R_PPC64_GOT_TLSGD16_HA: | |
17136 | case R_PPC64_GOT_TLSLD16_HA: | |
17137 | case R_PPC64_GOT_TPREL16_HA: | |
17138 | case R_PPC64_GOT_DTPREL16_HA: | |
17139 | /* Add 0x10000 if sign bit in 0:15 is set. | |
17140 | Bits 0:15 are not used. */ | |
17141 | addend += 0x8000; | |
65f38f15 AM |
17142 | break; |
17143 | ||
5663e321 AM |
17144 | case R_PPC64_D34_HA30: |
17145 | case R_PPC64_ADDR16_HIGHERA34: | |
17146 | case R_PPC64_ADDR16_HIGHESTA34: | |
17147 | case R_PPC64_REL16_HIGHERA34: | |
17148 | case R_PPC64_REL16_HIGHESTA34: | |
17149 | if (sec != NULL) | |
17150 | addend += 1ULL << 33; | |
17151 | break; | |
17152 | ||
65f38f15 AM |
17153 | case R_PPC64_ADDR16_DS: |
17154 | case R_PPC64_ADDR16_LO_DS: | |
17155 | case R_PPC64_GOT16_DS: | |
17156 | case R_PPC64_GOT16_LO_DS: | |
17157 | case R_PPC64_PLT16_LO_DS: | |
17158 | case R_PPC64_SECTOFF_DS: | |
17159 | case R_PPC64_SECTOFF_LO_DS: | |
17160 | case R_PPC64_TOC16_DS: | |
17161 | case R_PPC64_TOC16_LO_DS: | |
17162 | case R_PPC64_PLTGOT16_DS: | |
17163 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
17164 | case R_PPC64_GOT_TPREL16_DS: |
17165 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17166 | case R_PPC64_GOT_DTPREL16_DS: | |
17167 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17168 | case R_PPC64_TPREL16_DS: | |
17169 | case R_PPC64_TPREL16_LO_DS: | |
17170 | case R_PPC64_DTPREL16_DS: | |
17171 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
17172 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
17173 | mask = 3; | |
a680de9a PB |
17174 | /* If this reloc is against an lq, lxv, or stxv insn, then |
17175 | the value must be a multiple of 16. This is somewhat of | |
17176 | a hack, but the "correct" way to do this by defining _DQ | |
17177 | forms of all the _DS relocs bloats all reloc switches in | |
17178 | this file. It doesn't make much sense to use these | |
17179 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
17180 | if ((insn & (0x3fu << 26)) == (56u << 26) |
17181 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 17182 | mask = 15; |
a680de9a PB |
17183 | relocation += addend; |
17184 | addend = insn & (mask ^ 3); | |
17185 | if ((relocation & mask) != 0) | |
65f38f15 | 17186 | { |
a680de9a | 17187 | relocation ^= relocation & mask; |
25f53a85 | 17188 | info->callbacks->einfo |
695344c0 | 17189 | /* xgettext:c-format */ |
174d0a74 | 17190 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 17191 | input_bfd, input_section, rel->r_offset, |
d830549d | 17192 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 17193 | mask + 1); |
65f38f15 | 17194 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 17195 | ret = FALSE; |
c316a17c | 17196 | goto copy_reloc; |
65f38f15 AM |
17197 | } |
17198 | break; | |
5bd4f169 AM |
17199 | } |
17200 | ||
239e1f3a AM |
17201 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
17202 | because such sections are not SEC_ALLOC and thus ld.so will | |
17203 | not process them. */ | |
d830549d | 17204 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 17205 | if (unresolved_reloc |
239e1f3a | 17206 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
17207 | && h->elf.def_dynamic) |
17208 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
17209 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 17210 | { |
25f53a85 | 17211 | info->callbacks->einfo |
695344c0 | 17212 | /* xgettext:c-format */ |
c1c8c1ef | 17213 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 17214 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 17215 | howto->name, |
039b3fef | 17216 | h->elf.root.root.string); |
b34976b6 | 17217 | ret = FALSE; |
9c07fe7c | 17218 | } |
5bd4f169 | 17219 | |
b80eed39 AM |
17220 | /* 16-bit fields in insns mostly have signed values, but a |
17221 | few insns have 16-bit unsigned values. Really, we should | |
17222 | have different reloc types. */ | |
17223 | if (howto->complain_on_overflow != complain_overflow_dont | |
17224 | && howto->dst_mask == 0xffff | |
17225 | && (input_section->flags & SEC_CODE) != 0) | |
17226 | { | |
17227 | enum complain_overflow complain = complain_overflow_signed; | |
17228 | ||
17229 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 17230 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
17231 | complain = complain_overflow_bitfield; |
17232 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
17233 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
17234 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
17235 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
17236 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
17237 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
17238 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
17239 | complain = complain_overflow_unsigned; |
17240 | if (howto->complain_on_overflow != complain) | |
17241 | { | |
17242 | alt_howto = *howto; | |
17243 | alt_howto.complain_on_overflow = complain; | |
17244 | howto = &alt_howto; | |
17245 | } | |
17246 | } | |
17247 | ||
5663e321 | 17248 | switch (r_type) |
a680de9a | 17249 | { |
5663e321 AM |
17250 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
17251 | case R_PPC64_D34: | |
17252 | case R_PPC64_D34_LO: | |
17253 | case R_PPC64_D34_HI30: | |
17254 | case R_PPC64_D34_HA30: | |
17255 | case R_PPC64_PCREL34: | |
17256 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
17257 | case R_PPC64_TPREL34: |
17258 | case R_PPC64_DTPREL34: | |
87c69f97 AM |
17259 | case R_PPC64_GOT_TLSGD_PCREL34: |
17260 | case R_PPC64_GOT_TLSLD_PCREL34: | |
17261 | case R_PPC64_GOT_TPREL_PCREL34: | |
17262 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
17263 | case R_PPC64_PLT_PCREL34: |
17264 | case R_PPC64_PLT_PCREL34_NOTOC: | |
17265 | case R_PPC64_D28: | |
17266 | case R_PPC64_PCREL28: | |
17267 | if (rel->r_offset + 8 > input_section->size) | |
17268 | r = bfd_reloc_outofrange; | |
17269 | else | |
17270 | { | |
5663e321 AM |
17271 | relocation += addend; |
17272 | if (howto->pc_relative) | |
17273 | relocation -= (rel->r_offset | |
17274 | + input_section->output_offset | |
17275 | + input_section->output_section->vma); | |
17276 | relocation >>= howto->rightshift; | |
17277 | ||
17278 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
17279 | pinsn <<= 32; | |
17280 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
17281 | ||
17282 | pinsn &= ~howto->dst_mask; | |
17283 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
17284 | & howto->dst_mask); | |
17285 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
17286 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
17287 | r = bfd_reloc_ok; | |
17288 | if (howto->complain_on_overflow == complain_overflow_signed | |
17289 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
17290 | >= 1ULL << howto->bitsize)) | |
17291 | r = bfd_reloc_overflow; | |
17292 | } | |
17293 | break; | |
17294 | ||
17295 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
17296 | if (rel->r_offset + 4 > input_section->size) |
17297 | r = bfd_reloc_outofrange; | |
17298 | else | |
17299 | { | |
17300 | relocation += addend; | |
17301 | relocation -= (rel->r_offset | |
17302 | + input_section->output_offset | |
17303 | + input_section->output_section->vma); | |
3de43e7b | 17304 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
17305 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
17306 | insn &= ~0x1fffc1; | |
3de43e7b | 17307 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
17308 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
17309 | r = bfd_reloc_ok; | |
3de43e7b | 17310 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
17311 | r = bfd_reloc_overflow; |
17312 | } | |
5663e321 AM |
17313 | break; |
17314 | ||
17315 | default: | |
17316 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
17317 | contents, rel->r_offset, | |
17318 | relocation, addend); | |
a680de9a | 17319 | } |
5bd4f169 | 17320 | |
ef60b7ff | 17321 | if (r != bfd_reloc_ok) |
5bd4f169 | 17322 | { |
bc30df16 | 17323 | char *more_info = NULL; |
b80eed39 | 17324 | const char *reloc_name = howto->name; |
bc30df16 AM |
17325 | |
17326 | if (reloc_dest != DEST_NORMAL) | |
17327 | { | |
17328 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
17329 | if (more_info != NULL) | |
17330 | { | |
17331 | strcpy (more_info, reloc_name); | |
17332 | strcat (more_info, (reloc_dest == DEST_OPD | |
17333 | ? " (OPD)" : " (stub)")); | |
17334 | reloc_name = more_info; | |
17335 | } | |
17336 | } | |
17337 | ||
cd27b276 | 17338 | if (r == bfd_reloc_overflow) |
5bd4f169 | 17339 | { |
8131c122 AM |
17340 | /* On code like "if (foo) foo();" don't report overflow |
17341 | on a branch to zero when foo is undefined. */ | |
17342 | if (!warned | |
17343 | && (reloc_dest == DEST_STUB | |
17344 | || !(h != NULL | |
17345 | && (h->elf.root.type == bfd_link_hash_undefweak | |
17346 | || h->elf.root.type == bfd_link_hash_undefined) | |
17347 | && is_branch_reloc (r_type)))) | |
9e51d549 AM |
17348 | info->callbacks->reloc_overflow |
17349 | (info, (struct bfd_link_hash_entry *) h, sym_name, | |
17350 | reloc_name, orig_rel.r_addend, input_bfd, input_section, | |
17351 | rel->r_offset); | |
ef60b7ff AM |
17352 | } |
17353 | else | |
17354 | { | |
25f53a85 | 17355 | info->callbacks->einfo |
695344c0 | 17356 | /* xgettext:c-format */ |
c1c8c1ef | 17357 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 17358 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 17359 | reloc_name, sym_name, (int) r); |
b34976b6 | 17360 | ret = FALSE; |
ef60b7ff | 17361 | } |
c9594989 | 17362 | free (more_info); |
5bd4f169 | 17363 | } |
c316a17c AM |
17364 | copy_reloc: |
17365 | if (wrel != rel) | |
17366 | *wrel = *rel; | |
17367 | } | |
17368 | ||
17369 | if (wrel != rel) | |
17370 | { | |
17371 | Elf_Internal_Shdr *rel_hdr; | |
17372 | size_t deleted = rel - wrel; | |
17373 | ||
17374 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
17375 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17376 | if (rel_hdr->sh_size == 0) | |
17377 | { | |
17378 | /* It is too late to remove an empty reloc section. Leave | |
17379 | one NONE reloc. | |
17380 | ??? What is wrong with an empty section??? */ | |
17381 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
17382 | deleted -= 1; | |
17383 | } | |
17384 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
17385 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17386 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
17387 | } |
17388 | ||
645ea6a9 AM |
17389 | /* If we're emitting relocations, then shortly after this function |
17390 | returns, reloc offsets and addends for this section will be | |
17391 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
17392 | file rather than the input. Save a copy of the relocs for |
17393 | opd_entry_value. */ | |
0e1862bb | 17394 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
17395 | { |
17396 | bfd_size_type amt; | |
17397 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
17398 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
17399 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
17400 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
17401 | if (rel == NULL) |
17402 | return FALSE; | |
17403 | memcpy (rel, relocs, amt); | |
17404 | } | |
5bd4f169 AM |
17405 | return ret; |
17406 | } | |
17407 | ||
754021d0 AM |
17408 | /* Adjust the value of any local symbols in opd sections. */ |
17409 | ||
6e0b88f1 | 17410 | static int |
754021d0 AM |
17411 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
17412 | const char *name ATTRIBUTE_UNUSED, | |
17413 | Elf_Internal_Sym *elfsym, | |
17414 | asection *input_sec, | |
17415 | struct elf_link_hash_entry *h) | |
17416 | { | |
74f0fb50 AM |
17417 | struct _opd_sec_data *opd; |
17418 | long adjust; | |
754021d0 AM |
17419 | bfd_vma value; |
17420 | ||
4025353c | 17421 | if (h != NULL) |
6e0b88f1 | 17422 | return 1; |
4025353c | 17423 | |
74f0fb50 AM |
17424 | opd = get_opd_info (input_sec); |
17425 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 17426 | return 1; |
754021d0 AM |
17427 | |
17428 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 17429 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
17430 | value -= input_sec->output_section->vma; |
17431 | ||
51aecdc5 | 17432 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 17433 | if (adjust == -1) |
6e0b88f1 AM |
17434 | return 2; |
17435 | ||
17436 | elfsym->st_value += adjust; | |
17437 | return 1; | |
754021d0 AM |
17438 | } |
17439 | ||
5bd4f169 AM |
17440 | /* Finish up dynamic symbol handling. We set the contents of various |
17441 | dynamic sections here. */ | |
17442 | ||
b34976b6 | 17443 | static bfd_boolean |
4ce794b7 AM |
17444 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
17445 | struct bfd_link_info *info, | |
17446 | struct elf_link_hash_entry *h, | |
4aef7643 | 17447 | Elf_Internal_Sym *sym) |
5bd4f169 | 17448 | { |
65f38f15 | 17449 | struct ppc_link_hash_table *htab; |
8387904d | 17450 | struct plt_entry *ent; |
5bd4f169 | 17451 | |
65f38f15 | 17452 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17453 | if (htab == NULL) |
17454 | return FALSE; | |
5bd4f169 | 17455 | |
49c09209 AM |
17456 | if (!htab->opd_abi && !h->def_regular) |
17457 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
17458 | if (ent->plt.offset != (bfd_vma) -1) | |
17459 | { | |
17460 | /* Mark the symbol as undefined, rather than as | |
17461 | defined in glink. Leave the value if there were | |
17462 | any relocations where pointer equality matters | |
17463 | (this is a clue for the dynamic linker, to make | |
17464 | function pointer comparisons work between an | |
17465 | application and shared library), otherwise set it | |
17466 | to zero. */ | |
17467 | sym->st_shndx = SHN_UNDEF; | |
17468 | if (!h->pointer_equality_needed) | |
17469 | sym->st_value = 0; | |
17470 | else if (!h->ref_regular_nonweak) | |
17471 | { | |
17472 | /* This breaks function pointer comparisons, but | |
17473 | that is better than breaking tests for a NULL | |
17474 | function pointer. */ | |
17475 | sym->st_value = 0; | |
17476 | } | |
17477 | break; | |
17478 | } | |
5bd4f169 | 17479 | |
1bdd8fac AM |
17480 | if (h->needs_copy |
17481 | && (h->root.type == bfd_link_hash_defined | |
17482 | || h->root.type == bfd_link_hash_defweak) | |
17483 | && (h->root.u.def.section == htab->elf.sdynbss | |
17484 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 17485 | { |
65f38f15 | 17486 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 17487 | Elf_Internal_Rela rela; |
5474d94f | 17488 | asection *srel; |
49c09209 | 17489 | bfd_byte *loc; |
5bd4f169 | 17490 | |
1bdd8fac | 17491 | if (h->dynindx == -1) |
65f38f15 | 17492 | abort (); |
5bd4f169 | 17493 | |
ed7007c1 | 17494 | rela.r_offset = defined_sym_val (h); |
5bd4f169 AM |
17495 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); |
17496 | rela.r_addend = 0; | |
afbf7e8e | 17497 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
17498 | srel = htab->elf.sreldynrelro; |
17499 | else | |
17500 | srel = htab->elf.srelbss; | |
17501 | loc = srel->contents; | |
17502 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 17503 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
17504 | } |
17505 | ||
b34976b6 | 17506 | return TRUE; |
5bd4f169 AM |
17507 | } |
17508 | ||
65f38f15 AM |
17509 | /* Used to decide how to sort relocs in an optimal manner for the |
17510 | dynamic linker, before writing them out. */ | |
17511 | ||
17512 | static enum elf_reloc_type_class | |
7e612e98 AM |
17513 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
17514 | const asection *rel_sec, | |
17515 | const Elf_Internal_Rela *rela) | |
65f38f15 | 17516 | { |
04c9666a | 17517 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
17518 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
17519 | ||
33e44f2e | 17520 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 17521 | return reloc_class_ifunc; |
a33d1f77 | 17522 | |
4ce794b7 | 17523 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 17524 | switch (r_type) |
65f38f15 AM |
17525 | { |
17526 | case R_PPC64_RELATIVE: | |
17527 | return reloc_class_relative; | |
17528 | case R_PPC64_JMP_SLOT: | |
17529 | return reloc_class_plt; | |
17530 | case R_PPC64_COPY: | |
17531 | return reloc_class_copy; | |
17532 | default: | |
17533 | return reloc_class_normal; | |
17534 | } | |
17535 | } | |
17536 | ||
5bd4f169 AM |
17537 | /* Finish up the dynamic sections. */ |
17538 | ||
b34976b6 | 17539 | static bfd_boolean |
4ce794b7 AM |
17540 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
17541 | struct bfd_link_info *info) | |
5bd4f169 | 17542 | { |
65f38f15 AM |
17543 | struct ppc_link_hash_table *htab; |
17544 | bfd *dynobj; | |
5bd4f169 | 17545 | asection *sdyn; |
5bd4f169 | 17546 | |
65f38f15 | 17547 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17548 | if (htab == NULL) |
17549 | return FALSE; | |
17550 | ||
65f38f15 | 17551 | dynobj = htab->elf.dynobj; |
3d4d4302 | 17552 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 17553 | |
65f38f15 | 17554 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 17555 | { |
5bd4f169 AM |
17556 | Elf64_External_Dyn *dyncon, *dynconend; |
17557 | ||
33e44f2e | 17558 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 17559 | abort (); |
5bd4f169 AM |
17560 | |
17561 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 17562 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
17563 | for (; dyncon < dynconend; dyncon++) |
17564 | { | |
17565 | Elf_Internal_Dyn dyn; | |
19397422 | 17566 | asection *s; |
5bd4f169 AM |
17567 | |
17568 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
17569 | ||
17570 | switch (dyn.d_tag) | |
17571 | { | |
65f38f15 AM |
17572 | default: |
17573 | continue; | |
5bd4f169 | 17574 | |
5d1634d7 | 17575 | case DT_PPC64_GLINK: |
4ce794b7 | 17576 | s = htab->glink; |
6348e046 | 17577 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
17578 | /* We stupidly defined DT_PPC64_GLINK to be the start |
17579 | of glink rather than the first entry point, which is | |
17580 | what ld.so needs, and now have a bigger stub to | |
17581 | support automatic multiple TOCs. */ | |
9e390558 | 17582 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
17583 | break; |
17584 | ||
19397422 AM |
17585 | case DT_PPC64_OPD: |
17586 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17587 | if (s == NULL) |
17588 | continue; | |
17589 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
17590 | break; |
17591 | ||
e8910a83 | 17592 | case DT_PPC64_OPT: |
5663e321 AM |
17593 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
17594 | || htab->notoc_plt) | |
e8910a83 | 17595 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
17596 | if (htab->has_plt_localentry0) |
17597 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
17598 | break; |
17599 | ||
19397422 AM |
17600 | case DT_PPC64_OPDSZ: |
17601 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17602 | if (s == NULL) |
17603 | continue; | |
eea6121a | 17604 | dyn.d_un.d_val = s->size; |
19397422 AM |
17605 | break; |
17606 | ||
65f38f15 | 17607 | case DT_PLTGOT: |
33e44f2e | 17608 | s = htab->elf.splt; |
6348e046 | 17609 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
17610 | break; |
17611 | ||
17612 | case DT_JMPREL: | |
33e44f2e | 17613 | s = htab->elf.srelplt; |
6348e046 | 17614 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 17615 | break; |
5bd4f169 | 17616 | |
65f38f15 | 17617 | case DT_PLTRELSZ: |
33e44f2e | 17618 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 17619 | break; |
82e66161 AM |
17620 | |
17621 | case DT_TEXTREL: | |
cebd6b8a | 17622 | if (htab->elf.ifunc_resolvers) |
82e66161 AM |
17623 | info->callbacks->einfo |
17624 | (_("%P: warning: text relocations and GNU indirect " | |
17625 | "functions may result in a segfault at runtime\n")); | |
17626 | continue; | |
5bd4f169 | 17627 | } |
5bd4f169 | 17628 | |
65f38f15 | 17629 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 17630 | } |
5bd4f169 AM |
17631 | } |
17632 | ||
6528b6eb AM |
17633 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
17634 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17635 | { |
17636 | /* Fill in the first entry in the global offset table. | |
17637 | We use it to hold the link-time TOCbase. */ | |
17638 | bfd_put_64 (output_bfd, | |
60ee0d4a | 17639 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 17640 | htab->elf.sgot->contents); |
5d1634d7 AM |
17641 | |
17642 | /* Set .got entry size. */ | |
2cdcc330 AM |
17643 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
17644 | = 8; | |
5d1634d7 AM |
17645 | } |
17646 | ||
6528b6eb AM |
17647 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
17648 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17649 | { |
17650 | /* Set .plt entry size. */ | |
33e44f2e | 17651 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 17652 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
17653 | } |
17654 | ||
84f5d08e AM |
17655 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
17656 | brlt ourselves if emitrelocations. */ | |
17657 | if (htab->brlt != NULL | |
17658 | && htab->brlt->reloc_count != 0 | |
17659 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17660 | htab->brlt, | |
d4730f92 | 17661 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
17662 | elf_section_data (htab->brlt)->relocs, |
17663 | NULL)) | |
17664 | return FALSE; | |
17665 | ||
176a0d42 AM |
17666 | if (htab->glink != NULL |
17667 | && htab->glink->reloc_count != 0 | |
17668 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17669 | htab->glink, | |
d4730f92 | 17670 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
17671 | elf_section_data (htab->glink)->relocs, |
17672 | NULL)) | |
17673 | return FALSE; | |
17674 | ||
da44f4e5 | 17675 | |
df136d64 AM |
17676 | if (htab->glink_eh_frame != NULL |
17677 | && htab->glink_eh_frame->size != 0 | |
17678 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
17679 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
17680 | htab->glink_eh_frame, | |
17681 | htab->glink_eh_frame->contents)) | |
17682 | return FALSE; | |
58d180e8 | 17683 | |
e717da7e | 17684 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
17685 | since we didn't add them to DYNOBJ. We know dynobj is the first |
17686 | bfd. */ | |
c72f2fb2 | 17687 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
17688 | { |
17689 | asection *s; | |
7b53ace3 | 17690 | |
0c8d6e5c | 17691 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
17692 | continue; |
17693 | ||
e717da7e AM |
17694 | s = ppc64_elf_tdata (dynobj)->got; |
17695 | if (s != NULL | |
eea6121a | 17696 | && s->size != 0 |
e717da7e AM |
17697 | && s->output_section != bfd_abs_section_ptr |
17698 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17699 | s->contents, s->output_offset, | |
eea6121a | 17700 | s->size)) |
e717da7e AM |
17701 | return FALSE; |
17702 | s = ppc64_elf_tdata (dynobj)->relgot; | |
17703 | if (s != NULL | |
eea6121a | 17704 | && s->size != 0 |
e717da7e AM |
17705 | && s->output_section != bfd_abs_section_ptr |
17706 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17707 | s->contents, s->output_offset, | |
eea6121a | 17708 | s->size)) |
e717da7e AM |
17709 | return FALSE; |
17710 | } | |
f6c52c13 | 17711 | |
b34976b6 | 17712 | return TRUE; |
5bd4f169 AM |
17713 | } |
17714 | ||
5bd4f169 | 17715 | #include "elf64-target.h" |
7b8e7dad AM |
17716 | |
17717 | /* FreeBSD support */ | |
17718 | ||
17719 | #undef TARGET_LITTLE_SYM | |
6afcdeb3 | 17720 | #define TARGET_LITTLE_SYM powerpc_elf64_fbsd_le_vec |
7b8e7dad | 17721 | #undef TARGET_LITTLE_NAME |
6afcdeb3 | 17722 | #define TARGET_LITTLE_NAME "elf64-powerpcle-freebsd" |
7b8e7dad AM |
17723 | |
17724 | #undef TARGET_BIG_SYM | |
6d00b590 | 17725 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
17726 | #undef TARGET_BIG_NAME |
17727 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
17728 | ||
17729 | #undef ELF_OSABI | |
17730 | #define ELF_OSABI ELFOSABI_FREEBSD | |
17731 | ||
17732 | #undef elf64_bed | |
17733 | #define elf64_bed elf64_powerpc_fbsd_bed | |
17734 | ||
17735 | #include "elf64-target.h" |