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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 |
ad8e1ba5 AM |
117 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
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 |
6911b7dc | 128 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 129 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 130 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 131 | |
5bd4f169 AM |
132 | /* The name of the dynamic interpreter. This is put in the .interp |
133 | section. */ | |
134 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
135 | ||
136 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 137 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 138 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
139 | |
140 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 141 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 142 | |
a078d95a AM |
143 | /* Offsets to some stack save slots. */ |
144 | #define STK_LR 16 | |
145 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 146 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
147 | CR save slot. Used only by optimised __tls_get_addr call stub, |
148 | relying on __tls_get_addr_opt not saving CR.. */ | |
149 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
150 | ||
5bd4f169 | 151 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 152 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
153 | /* TOC base alignment. */ |
154 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
155 | |
156 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
157 | #define TP_OFFSET 0x7000 | |
158 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 159 | |
ad8e1ba5 AM |
160 | /* .plt call stub instructions. The normal stub is like this, but |
161 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 162 | insert an addi to adjust r11. */ |
a078d95a | 163 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
164 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
165 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
166 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
167 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
168 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
169 | #define BCTR 0x4e800420 /* bctr */ |
170 | ||
07d6d2b8 | 171 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
172 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
173 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
174 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
175 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
176 | ||
177 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
178 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
179 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
180 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
181 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
182 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
183 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 184 | |
71a39c98 | 185 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 186 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 187 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 188 | |
07d6d2b8 AM |
189 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
190 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
191 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 192 | |
04bdff6a | 193 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 194 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 195 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 196 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
197 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
198 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 199 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 200 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 201 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 202 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 203 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 204 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 205 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
206 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
207 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
208 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
209 | #define PADDI_R12_PC 0x0610000039800000ULL |
210 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 211 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 212 | |
9e390558 AM |
213 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
214 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 215 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
216 | /* 0: */ |
217 | /* .quad plt0-1f */ | |
218 | /* __glink: */ | |
219 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
220 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
221 | /* 1: */ | |
222 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 223 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 224 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
225 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
226 | /* ld %12,0(%11) */ | |
227 | /* ld %2,8(%11) */ | |
228 | /* mtctr %12 */ | |
229 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 230 | /* bctr */ |
b9e5796b AM |
231 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
232 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
233 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
234 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
235 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
236 | |
237 | /* Pad with this. */ | |
238 | #define NOP 0x60000000 | |
239 | ||
721956f4 AM |
240 | /* Some other nops. */ |
241 | #define CROR_151515 0x4def7b82 | |
242 | #define CROR_313131 0x4ffffb82 | |
243 | ||
cedb70c5 | 244 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
245 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
246 | #define B_DOT 0x48000000 /* b . */ | |
247 | ||
248 | /* After that, we need two instructions to load the index, followed by | |
249 | a branch. */ | |
250 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 251 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 252 | |
deb0e272 AM |
253 | /* Instructions used by the save and restore reg functions. */ |
254 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
255 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
256 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
257 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
258 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
259 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
260 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
261 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
262 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
263 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
264 | #define BLR 0x4e800020 /* blr */ |
265 | ||
41bd81ab AM |
266 | /* Since .opd is an array of descriptors and each entry will end up |
267 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
268 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 269 | relocate .opd without reloc entries. */ |
41bd81ab AM |
270 | #ifndef NO_OPD_RELOCS |
271 | #define NO_OPD_RELOCS 0 | |
272 | #endif | |
810d4e75 | 273 | |
a4b6fadd AM |
274 | #ifndef ARRAY_SIZE |
275 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
276 | #endif | |
277 | ||
810d4e75 AM |
278 | static inline int |
279 | abiversion (bfd *abfd) | |
280 | { | |
281 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
282 | } | |
283 | ||
284 | static inline void | |
285 | set_abiversion (bfd *abfd, int ver) | |
286 | { | |
287 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
288 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
289 | } | |
5bd4f169 AM |
290 | \f |
291 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
292 | /* Like other ELF RELA targets that don't apply multiple |
293 | field-altering relocations to the same localation, src_mask is | |
294 | always zero and pcrel_offset is the same as pc_relative. | |
295 | PowerPC can always use a zero bitpos, even when the field is not at | |
296 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
297 | and bitpos=2 which matches the ABI description, or as we do here, | |
298 | rightshift=0, bitsize=26 and bitpos=0. */ | |
299 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
300 | complain, special_func) \ | |
301 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
302 | complain_overflow_ ## complain, special_func, \ | |
303 | #type, FALSE, 0, mask, pc_relative) | |
304 | ||
04c9666a | 305 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 306 | |
f3185997 NC |
307 | static reloc_howto_type ppc64_elf_howto_raw[] = |
308 | { | |
5bd4f169 | 309 | /* This reloc does nothing. */ |
46807bf4 AM |
310 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
311 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
312 | |
313 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
314 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
315 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
316 | |
317 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
318 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
319 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
320 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
321 | |
322 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
323 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
324 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
325 | |
326 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
327 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
328 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
329 | |
330 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
331 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
332 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
333 | |
334 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
335 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
336 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
337 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
338 | |
339 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
340 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
341 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
342 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
343 | |
344 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
345 | indicate that the branch is expected to be taken. The lower two | |
346 | bits must be zero. */ | |
46807bf4 AM |
347 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
348 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
349 | |
350 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
351 | indicate that the branch is not expected to be taken. The lower | |
352 | two bits must be zero. */ | |
46807bf4 AM |
353 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
354 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
355 | |
356 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
357 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
358 | ppc64_elf_branch_reloc), | |
5bd4f169 | 359 | |
05d0e962 | 360 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
361 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
362 | ppc64_elf_branch_reloc), | |
05d0e962 | 363 | |
5bd4f169 | 364 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
365 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
366 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
367 | |
368 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
369 | the branch is expected to be taken. The lower two bits must be | |
370 | zero. */ | |
46807bf4 AM |
371 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
372 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
373 | |
374 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
375 | the branch is not expected to be taken. The lower two bits must | |
376 | be zero. */ | |
46807bf4 AM |
377 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
378 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
379 | |
380 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
381 | symbol. */ | |
46807bf4 AM |
382 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
383 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
384 | |
385 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
386 | the symbol. */ | |
46807bf4 AM |
387 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
388 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
389 | |
390 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
391 | the symbol. */ | |
46807bf4 AM |
392 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
393 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
394 | |
395 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
396 | the symbol. */ | |
46807bf4 AM |
397 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
398 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
399 | |
400 | /* This is used only by the dynamic linker. The symbol should exist | |
401 | both in the object being run and in some shared library. The | |
402 | dynamic linker copies the data addressed by the symbol from the | |
403 | shared library into the object, because the object being | |
404 | run has to have the data at some particular address. */ | |
46807bf4 AM |
405 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
406 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
407 | |
408 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
409 | entries. */ | |
46807bf4 AM |
410 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
411 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
412 | |
413 | /* Created by the link editor. Marks a procedure linkage table | |
414 | entry for a symbol. */ | |
46807bf4 AM |
415 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
416 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
417 | |
418 | /* Used only by the dynamic linker. When the object is run, this | |
419 | doubleword64 is set to the load address of the object, plus the | |
420 | addend. */ | |
46807bf4 AM |
421 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
422 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
423 | |
424 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
425 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
426 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
427 | |
428 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
429 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
430 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
431 | |
432 | /* 32-bit PC relative. */ | |
46807bf4 AM |
433 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
434 | bfd_elf_generic_reloc), | |
5bd4f169 | 435 | |
10ed1bba | 436 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
437 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
438 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
439 | |
440 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
441 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
442 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
443 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
444 | |
445 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
446 | the symbol. */ | |
46807bf4 AM |
447 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
448 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
449 | |
450 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
451 | the symbol. */ | |
46807bf4 AM |
452 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
453 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
454 | |
455 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
456 | the symbol. */ | |
46807bf4 AM |
457 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
458 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 459 | |
c061c2d8 | 460 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
461 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
462 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 463 | |
c061c2d8 | 464 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
465 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
466 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
467 | |
468 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
469 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
470 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
471 | |
472 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
473 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
474 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 475 | |
04c9666a | 476 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
477 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
478 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
479 | |
480 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
481 | ||
482 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
483 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
484 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
485 | |
486 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
487 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
488 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
489 | |
490 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
491 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
492 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
493 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
494 | |
495 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
496 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
497 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
498 | |
499 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
500 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
501 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
502 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
503 | |
504 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
505 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
506 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
507 | |
508 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
509 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
510 | bfd_elf_generic_reloc), | |
5bd4f169 | 511 | |
cedb70c5 | 512 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
513 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
514 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
515 | |
516 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
517 | table. */ | |
518 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
519 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
520 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
521 | |
522 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 523 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
524 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
525 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
526 | |
527 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 528 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
529 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
530 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
531 | |
532 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 533 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
534 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
535 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
536 | |
537 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
538 | contents of the low 16 bits, treated as a signed number, is | |
539 | negative. */ | |
5bd4f169 | 540 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
541 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
542 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
543 | |
544 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 545 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
546 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
547 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
548 | |
549 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
550 | value to relocate may (!) refer to a PLT entry which the link | |
551 | editor (a) may replace with the symbol value. If the link editor | |
552 | is unable to fully resolve the symbol, it may (b) create a PLT | |
553 | entry and store the address to the new PLT entry in the GOT. | |
554 | This permits lazy resolution of function symbols at run time. | |
555 | The link editor may also skip all of this and just (c) emit a | |
556 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
557 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
558 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
559 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
560 | |
561 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
562 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
563 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
564 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
565 | |
566 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
567 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
568 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
569 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
570 | |
571 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
572 | 1 if the contents of the low 16 bits, treated as a signed number, | |
573 | is negative. */ | |
574 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
575 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
576 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
577 | |
578 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
579 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
580 | bfd_elf_generic_reloc), | |
411e1bfb AM |
581 | |
582 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
583 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
584 | bfd_elf_generic_reloc), | |
411e1bfb AM |
585 | |
586 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
587 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
588 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
589 | |
590 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
591 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
592 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
593 | |
594 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
595 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
596 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
597 | |
598 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
599 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
600 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
601 | |
602 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
603 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
604 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
605 | |
606 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
607 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
608 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
609 | |
610 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
611 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
612 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
613 | |
614 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
615 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
616 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
617 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
618 | |
619 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
620 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
621 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
622 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 623 | |
727fc41e | 624 | /* Marker relocs for TLS. */ |
46807bf4 AM |
625 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
626 | bfd_elf_generic_reloc), | |
627 | ||
628 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
629 | bfd_elf_generic_reloc), | |
630 | ||
631 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
632 | bfd_elf_generic_reloc), | |
727fc41e | 633 | |
23cedd1d AM |
634 | /* Marker reloc for optimizing r2 save in prologue rather than on |
635 | each plt call stub. */ | |
46807bf4 AM |
636 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
637 | bfd_elf_generic_reloc), | |
3b421ab3 | 638 | |
23cedd1d | 639 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
640 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
641 | bfd_elf_generic_reloc), | |
642 | ||
643 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
644 | bfd_elf_generic_reloc), | |
23cedd1d | 645 | |
411e1bfb AM |
646 | /* Computes the load module index of the load module that contains the |
647 | definition of its TLS sym. */ | |
46807bf4 AM |
648 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
649 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
650 | |
651 | /* Computes a dtv-relative displacement, the difference between the value | |
652 | of sym+add and the base address of the thread-local storage block that | |
653 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
654 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
655 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
656 | |
657 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
658 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
659 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
660 | |
661 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
662 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
663 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
664 | |
665 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
666 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
667 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
668 | |
669 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
670 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
671 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
672 | |
673 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
674 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
675 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
676 | |
677 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
678 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
679 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
680 | |
681 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
682 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
683 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
684 | |
685 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
686 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
687 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
688 | |
689 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
690 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
691 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
692 | |
693 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
694 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
695 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
696 | |
697 | /* Computes a tp-relative displacement, the difference between the value of | |
698 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
699 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
700 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
701 | |
702 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
703 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
704 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
705 | |
706 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
707 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
708 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
709 | |
710 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
711 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
712 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
713 | |
714 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
715 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
716 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
717 | |
718 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
719 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
720 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
721 | |
722 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
723 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
724 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
725 | |
726 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
727 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
728 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
729 | |
730 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
731 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
732 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
733 | |
734 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
735 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
736 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
737 | |
738 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
739 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
740 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
741 | |
742 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
743 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
744 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
745 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
746 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 747 | |
411e1bfb | 748 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
749 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
750 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 751 | |
411e1bfb | 752 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
753 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
754 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 755 | |
411e1bfb | 756 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
757 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
758 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 759 | |
411e1bfb AM |
760 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
761 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
762 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
763 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
764 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 765 | |
411e1bfb | 766 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
767 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
768 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 769 | |
411e1bfb | 770 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
771 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
772 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 773 | |
411e1bfb | 774 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
775 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
776 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 777 | |
411e1bfb AM |
778 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
779 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
780 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
781 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 782 | |
411e1bfb | 783 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
784 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
785 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 786 | |
411e1bfb | 787 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
788 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
789 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 790 | |
411e1bfb | 791 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
792 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
793 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
794 | |
795 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
796 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
797 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
798 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 799 | |
411e1bfb | 800 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
801 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
802 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 803 | |
411e1bfb | 804 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
805 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
806 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 807 | |
411e1bfb | 808 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
809 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
810 | ppc64_elf_unhandled_reloc), | |
811 | ||
812 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
813 | ppc64_elf_unhandled_reloc), | |
814 | ||
815 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
816 | bfd_elf_generic_reloc), | |
e054468f | 817 | |
25f23106 | 818 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
819 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
820 | bfd_elf_generic_reloc), | |
25f23106 AM |
821 | |
822 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
823 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
824 | bfd_elf_generic_reloc), | |
25f23106 AM |
825 | |
826 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
827 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
828 | bfd_elf_generic_reloc), | |
25f23106 AM |
829 | |
830 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
831 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
832 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
833 | ppc64_elf_ha_reloc), | |
25f23106 | 834 | |
4a969973 AM |
835 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
836 | bfd_elf_generic_reloc), | |
837 | ||
838 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
839 | ppc64_elf_ha_reloc), | |
840 | ||
841 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
842 | bfd_elf_generic_reloc), | |
843 | ||
844 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
845 | ppc64_elf_ha_reloc), | |
846 | ||
847 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
848 | bfd_elf_generic_reloc), | |
849 | ||
850 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
851 | ppc64_elf_ha_reloc), | |
852 | ||
a680de9a | 853 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
854 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
855 | ppc64_elf_ha_reloc), | |
a680de9a | 856 | |
7ba71655 | 857 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
858 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
859 | ppc64_elf_ha_reloc), | |
7ba71655 | 860 | |
f9c6b907 | 861 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
862 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
863 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
864 | |
865 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
866 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
867 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
868 | |
869 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
870 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
871 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
872 | |
873 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
874 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
875 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
876 | |
877 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
878 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
879 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
880 | |
881 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
882 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
883 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 884 | |
006589cf | 885 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
886 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
887 | bfd_elf_generic_reloc), | |
006589cf | 888 | |
45965137 | 889 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
890 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
891 | bfd_elf_generic_reloc), | |
45965137 | 892 | |
5663e321 AM |
893 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, FALSE, dont, |
894 | bfd_elf_generic_reloc), | |
895 | ||
896 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, FALSE, dont, | |
897 | bfd_elf_generic_reloc), | |
898 | ||
899 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, FALSE, dont, | |
900 | bfd_elf_generic_reloc), | |
901 | ||
902 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
903 | ppc64_elf_prefix_reloc), | |
904 | ||
905 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, dont, | |
906 | ppc64_elf_prefix_reloc), | |
907 | ||
908 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
909 | ppc64_elf_prefix_reloc), | |
910 | ||
911 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
912 | ppc64_elf_prefix_reloc), | |
913 | ||
914 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
915 | ppc64_elf_prefix_reloc), | |
916 | ||
917 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
918 | ppc64_elf_unhandled_reloc), | |
919 | ||
920 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
921 | ppc64_elf_unhandled_reloc), | |
922 | ||
923 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
924 | ppc64_elf_unhandled_reloc), | |
925 | ||
c213164a AM |
926 | HOW (R_PPC64_TPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, |
927 | ppc64_elf_unhandled_reloc), | |
928 | ||
929 | HOW (R_PPC64_DTPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
930 | ppc64_elf_unhandled_reloc), | |
931 | ||
932 | HOW (R_PPC64_GOT_TLSGD34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
933 | ppc64_elf_unhandled_reloc), | |
934 | ||
935 | HOW (R_PPC64_GOT_TLSLD34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
936 | ppc64_elf_unhandled_reloc), | |
937 | ||
938 | HOW (R_PPC64_GOT_TPREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
939 | ppc64_elf_unhandled_reloc), | |
940 | ||
941 | HOW (R_PPC64_GOT_DTPREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
942 | ppc64_elf_unhandled_reloc), | |
943 | ||
5663e321 AM |
944 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, FALSE, dont, |
945 | bfd_elf_generic_reloc), | |
946 | ||
947 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, FALSE, dont, | |
948 | ppc64_elf_ha_reloc), | |
949 | ||
950 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, FALSE, dont, | |
951 | bfd_elf_generic_reloc), | |
952 | ||
953 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, FALSE, dont, | |
954 | ppc64_elf_ha_reloc), | |
955 | ||
956 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, TRUE, dont, | |
957 | bfd_elf_generic_reloc), | |
958 | ||
959 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, TRUE, dont, | |
960 | ppc64_elf_ha_reloc), | |
961 | ||
962 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, TRUE, dont, | |
963 | bfd_elf_generic_reloc), | |
964 | ||
965 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, TRUE, dont, | |
966 | ppc64_elf_ha_reloc), | |
967 | ||
968 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, FALSE, signed, | |
969 | ppc64_elf_prefix_reloc), | |
970 | ||
971 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, TRUE, signed, | |
972 | ppc64_elf_prefix_reloc), | |
973 | ||
5bd4f169 | 974 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
975 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
976 | NULL), | |
5bd4f169 AM |
977 | |
978 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
979 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
980 | NULL), | |
5bd4f169 AM |
981 | }; |
982 | ||
983 | \f | |
984 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
985 | be done. */ | |
986 | ||
987 | static void | |
4ce794b7 | 988 | ppc_howto_init (void) |
5bd4f169 AM |
989 | { |
990 | unsigned int i, type; | |
991 | ||
a4b6fadd | 992 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
993 | { |
994 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 995 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
996 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
997 | } | |
998 | } | |
999 | ||
1000 | static reloc_howto_type * | |
f3185997 | 1001 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 1002 | bfd_reloc_code_real_type code) |
5bd4f169 | 1003 | { |
411e1bfb | 1004 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1005 | |
1006 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1007 | /* Initialize howto table if needed. */ | |
1008 | ppc_howto_init (); | |
1009 | ||
4ce794b7 | 1010 | switch (code) |
5bd4f169 AM |
1011 | { |
1012 | default: | |
f3185997 | 1013 | /* xgettext:c-format */ |
2cdcc330 AM |
1014 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
1015 | (int) code); | |
f3185997 | 1016 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 1017 | return NULL; |
5bd4f169 | 1018 | |
411e1bfb AM |
1019 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1020 | break; | |
1021 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1022 | break; | |
1023 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1024 | break; | |
1025 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1026 | break; | |
1027 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1028 | break; | |
1029 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1030 | break; | |
f9c6b907 AM |
1031 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1032 | break; | |
411e1bfb | 1033 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1034 | break; |
f9c6b907 AM |
1035 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1036 | break; | |
411e1bfb | 1037 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1038 | break; |
411e1bfb | 1039 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1040 | break; |
411e1bfb | 1041 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1042 | break; |
411e1bfb | 1043 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1044 | break; |
05d0e962 AM |
1045 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1046 | break; | |
411e1bfb | 1047 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1048 | break; |
411e1bfb | 1049 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1050 | break; |
411e1bfb | 1051 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1052 | break; |
411e1bfb | 1053 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1054 | break; |
411e1bfb | 1055 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1056 | break; |
411e1bfb | 1057 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1058 | break; |
411e1bfb | 1059 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1060 | break; |
411e1bfb | 1061 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1062 | break; |
411e1bfb | 1063 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1064 | break; |
411e1bfb | 1065 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1066 | break; |
411e1bfb | 1067 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1068 | break; |
411e1bfb | 1069 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1070 | break; |
411e1bfb | 1071 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1072 | break; |
411e1bfb | 1073 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1074 | break; |
411e1bfb | 1075 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1076 | break; |
411e1bfb | 1077 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1078 | break; |
411e1bfb | 1079 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1080 | break; |
411e1bfb | 1081 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1082 | break; |
411e1bfb | 1083 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1084 | break; |
411e1bfb | 1085 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1086 | break; |
411e1bfb | 1087 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1088 | break; |
411e1bfb | 1089 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1090 | break; |
411e1bfb | 1091 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1092 | break; |
411e1bfb | 1093 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1094 | break; |
411e1bfb | 1095 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1096 | break; |
411e1bfb | 1097 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1098 | break; |
411e1bfb | 1099 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1100 | break; |
411e1bfb | 1101 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1102 | break; |
411e1bfb | 1103 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1104 | break; |
411e1bfb | 1105 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1106 | break; |
411e1bfb | 1107 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1108 | break; |
411e1bfb | 1109 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1110 | break; |
411e1bfb | 1111 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1112 | break; |
411e1bfb | 1113 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1114 | break; |
411e1bfb | 1115 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1116 | break; |
411e1bfb | 1117 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1118 | break; |
411e1bfb | 1119 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1120 | break; |
411e1bfb | 1121 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1122 | break; |
411e1bfb | 1123 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1124 | break; |
411e1bfb | 1125 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1126 | break; |
411e1bfb | 1127 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1128 | break; |
411e1bfb | 1129 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1130 | break; |
411e1bfb | 1131 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1132 | break; |
411e1bfb | 1133 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1134 | break; |
411e1bfb | 1135 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1136 | break; |
411e1bfb | 1137 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1138 | break; |
411e1bfb | 1139 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1140 | break; |
411e1bfb | 1141 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1142 | break; |
c213164a | 1143 | case BFD_RELOC_PPC64_TLS_PCREL: |
411e1bfb | 1144 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1145 | break; |
727fc41e AM |
1146 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1147 | break; | |
1148 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1149 | break; | |
411e1bfb | 1150 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1151 | break; |
411e1bfb | 1152 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1153 | break; |
411e1bfb | 1154 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1155 | break; |
411e1bfb | 1156 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1157 | break; |
f9c6b907 AM |
1158 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1159 | break; | |
411e1bfb | 1160 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1161 | break; |
f9c6b907 AM |
1162 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1163 | break; | |
411e1bfb | 1164 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1165 | break; |
411e1bfb AM |
1166 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1167 | break; | |
1168 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1169 | break; | |
1170 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1171 | break; | |
f9c6b907 AM |
1172 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1173 | break; | |
411e1bfb AM |
1174 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1175 | break; | |
f9c6b907 AM |
1176 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1177 | break; | |
411e1bfb AM |
1178 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1179 | break; | |
1180 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1181 | break; | |
1182 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1183 | break; | |
1184 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1185 | break; | |
1186 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1187 | break; | |
1188 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1189 | break; | |
1190 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1191 | break; | |
1192 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1193 | break; | |
1194 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1195 | break; | |
1196 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1197 | break; | |
1198 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1199 | break; | |
1200 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1201 | break; | |
1202 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1203 | break; | |
1204 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1205 | break; | |
1206 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1207 | break; | |
1208 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1209 | break; | |
1210 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1211 | break; | |
1212 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1213 | break; | |
1214 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1215 | break; | |
1216 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1217 | break; | |
1218 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1219 | break; | |
1220 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1221 | break; | |
1222 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1223 | break; | |
1224 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1225 | break; | |
1226 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1227 | break; | |
1228 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1229 | break; | |
1230 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1231 | break; | |
1232 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1233 | break; | |
1234 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1235 | break; | |
25f23106 AM |
1236 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1237 | break; | |
1238 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1239 | break; | |
1240 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1241 | break; | |
1242 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1243 | break; | |
4a969973 AM |
1244 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1245 | break; | |
1246 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1247 | break; | |
1248 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1249 | break; | |
1250 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1251 | break; | |
1252 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1253 | break; | |
1254 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1255 | break; | |
7ba71655 AM |
1256 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1257 | break; | |
a680de9a PB |
1258 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1259 | break; | |
006589cf AM |
1260 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1261 | break; | |
45965137 AM |
1262 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1263 | break; | |
5663e321 AM |
1264 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1265 | break; | |
1266 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1267 | break; | |
1268 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1269 | break; | |
1270 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1271 | break; | |
1272 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1273 | break; | |
1274 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1275 | break; | |
1276 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1277 | break; | |
c213164a AM |
1278 | case BFD_RELOC_PPC64_TPREL34: r = R_PPC64_TPREL34; |
1279 | break; | |
1280 | case BFD_RELOC_PPC64_DTPREL34: r = R_PPC64_DTPREL34; | |
1281 | break; | |
1282 | case BFD_RELOC_PPC64_GOT_TLSGD34: r = R_PPC64_GOT_TLSGD34; | |
1283 | break; | |
1284 | case BFD_RELOC_PPC64_GOT_TLSLD34: r = R_PPC64_GOT_TLSLD34; | |
1285 | break; | |
1286 | case BFD_RELOC_PPC64_GOT_TPREL34: r = R_PPC64_GOT_TPREL34; | |
1287 | break; | |
1288 | case BFD_RELOC_PPC64_GOT_DTPREL34: r = R_PPC64_GOT_DTPREL34; | |
1289 | break; | |
5663e321 AM |
1290 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; |
1291 | break; | |
1292 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1293 | break; | |
1294 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1295 | break; | |
1296 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1297 | break; | |
1298 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1299 | break; | |
1300 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1301 | break; | |
1302 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1303 | break; | |
1304 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1305 | break; | |
1306 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1307 | break; | |
1308 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1309 | break; | |
411e1bfb AM |
1310 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1311 | break; | |
1312 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1313 | break; |
1314 | } | |
1315 | ||
4ce794b7 | 1316 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1317 | }; |
1318 | ||
157090f7 AM |
1319 | static reloc_howto_type * |
1320 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1321 | const char *r_name) | |
1322 | { | |
1323 | unsigned int i; | |
1324 | ||
a4b6fadd | 1325 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1326 | if (ppc64_elf_howto_raw[i].name != NULL |
1327 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1328 | return &ppc64_elf_howto_raw[i]; | |
1329 | ||
1330 | return NULL; | |
1331 | } | |
1332 | ||
5bd4f169 AM |
1333 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1334 | ||
f3185997 | 1335 | static bfd_boolean |
4aef7643 | 1336 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1337 | Elf_Internal_Rela *dst) |
5bd4f169 | 1338 | { |
65f38f15 AM |
1339 | unsigned int type; |
1340 | ||
ef60b7ff | 1341 | /* Initialize howto table if needed. */ |
5bd4f169 | 1342 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1343 | ppc_howto_init (); |
1344 | ||
65f38f15 | 1345 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1346 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1347 | { |
695344c0 | 1348 | /* xgettext:c-format */ |
0aa13fee | 1349 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1350 | abfd, type); |
f3185997 NC |
1351 | bfd_set_error (bfd_error_bad_value); |
1352 | return FALSE; | |
d0fb9a8d | 1353 | } |
65f38f15 | 1354 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1355 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1356 | { | |
1357 | /* xgettext:c-format */ | |
1358 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1359 | abfd, type); | |
1360 | bfd_set_error (bfd_error_bad_value); | |
1361 | return FALSE; | |
1362 | } | |
2cdcc330 | 1363 | |
f3185997 | 1364 | return TRUE; |
5bd4f169 AM |
1365 | } |
1366 | ||
04c9666a | 1367 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1368 | |
1369 | static bfd_reloc_status_type | |
4ce794b7 AM |
1370 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1371 | void *data, asection *input_section, | |
1372 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1373 | { |
a680de9a PB |
1374 | enum elf_ppc64_reloc_type r_type; |
1375 | long insn; | |
1376 | bfd_size_type octets; | |
3de43e7b | 1377 | bfd_vma value; |
a680de9a | 1378 | |
805fc799 AM |
1379 | /* If this is a relocatable link (output_bfd test tells us), just |
1380 | call the generic function. Any adjustment will be done at final | |
1381 | link time. */ | |
1382 | if (output_bfd != NULL) | |
cedb70c5 | 1383 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1384 | input_section, output_bfd, error_message); |
1385 | ||
5663e321 AM |
1386 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1387 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1388 | doesn't matter. */ |
a680de9a | 1389 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1390 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1391 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1392 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1393 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1394 | reloc_entry->addend += 1ULL << 33; | |
1395 | else | |
1396 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1397 | if (r_type != R_PPC64_REL16DX_HA) |
1398 | return bfd_reloc_continue; | |
1399 | ||
1400 | value = 0; | |
1401 | if (!bfd_is_com_section (symbol->section)) | |
1402 | value = symbol->value; | |
1403 | value += (reloc_entry->addend | |
1404 | + symbol->section->output_offset | |
1405 | + symbol->section->output_section->vma); | |
1406 | value -= (reloc_entry->address | |
1407 | + input_section->output_offset | |
1408 | + input_section->output_section->vma); | |
3de43e7b | 1409 | value = (bfd_signed_vma) value >> 16; |
a680de9a | 1410 | |
bb294208 | 1411 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
a680de9a PB |
1412 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1413 | insn &= ~0x1fffc1; | |
3de43e7b | 1414 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1415 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1416 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1417 | return bfd_reloc_overflow; |
1418 | return bfd_reloc_ok; | |
805fc799 | 1419 | } |
5bd4f169 | 1420 | |
2441e016 AM |
1421 | static bfd_reloc_status_type |
1422 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1423 | void *data, asection *input_section, | |
1424 | bfd *output_bfd, char **error_message) | |
1425 | { | |
1426 | if (output_bfd != NULL) | |
1427 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1428 | input_section, output_bfd, error_message); | |
1429 | ||
699733f6 AM |
1430 | if (strcmp (symbol->section->name, ".opd") == 0 |
1431 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1432 | { |
1433 | bfd_vma dest = opd_entry_value (symbol->section, | |
1434 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1435 | NULL, NULL, FALSE); |
2441e016 AM |
1436 | if (dest != (bfd_vma) -1) |
1437 | reloc_entry->addend = dest - (symbol->value | |
1438 | + symbol->section->output_section->vma | |
1439 | + symbol->section->output_offset); | |
1440 | } | |
810d4e75 AM |
1441 | else |
1442 | { | |
1443 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1444 | ||
1445 | if (symbol->section->owner != abfd | |
9f284bf9 | 1446 | && symbol->section->owner != NULL |
810d4e75 AM |
1447 | && abiversion (symbol->section->owner) >= 2) |
1448 | { | |
1449 | unsigned int i; | |
1450 | ||
1451 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1452 | { | |
1453 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1454 | ||
1455 | if (strcmp (symdef->name, symbol->name) == 0) | |
1456 | { | |
1457 | elfsym = (elf_symbol_type *) symdef; | |
1458 | break; | |
1459 | } | |
1460 | } | |
1461 | } | |
1462 | reloc_entry->addend | |
1463 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1464 | } | |
2441e016 AM |
1465 | return bfd_reloc_continue; |
1466 | } | |
1467 | ||
805fc799 | 1468 | static bfd_reloc_status_type |
4ce794b7 AM |
1469 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1470 | void *data, asection *input_section, | |
1471 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1472 | { |
1473 | long insn; | |
04c9666a | 1474 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1475 | bfd_size_type octets; |
794e51c0 AM |
1476 | /* Assume 'at' branch hints. */ |
1477 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1478 | |
1479 | /* If this is a relocatable link (output_bfd test tells us), just | |
1480 | call the generic function. Any adjustment will be done at final | |
1481 | link time. */ | |
5bd4f169 | 1482 | if (output_bfd != NULL) |
cedb70c5 | 1483 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1484 | input_section, output_bfd, error_message); |
1485 | ||
bb294208 | 1486 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1487 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1488 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1489 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1490 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1491 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1492 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1493 | |
794e51c0 | 1494 | if (is_isa_v2) |
5bd4f169 | 1495 | { |
805fc799 AM |
1496 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1497 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1498 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1499 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1500 | insn |= 0x02 << 21; | |
1501 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1502 | insn |= 0x08 << 21; | |
1503 | else | |
2441e016 | 1504 | goto out; |
5bd4f169 | 1505 | } |
805fc799 AM |
1506 | else |
1507 | { | |
1508 | bfd_vma target = 0; | |
1509 | bfd_vma from; | |
5bd4f169 | 1510 | |
805fc799 AM |
1511 | if (!bfd_is_com_section (symbol->section)) |
1512 | target = symbol->value; | |
1513 | target += symbol->section->output_section->vma; | |
1514 | target += symbol->section->output_offset; | |
1515 | target += reloc_entry->addend; | |
5bd4f169 | 1516 | |
805fc799 AM |
1517 | from = (reloc_entry->address |
1518 | + input_section->output_offset | |
1519 | + input_section->output_section->vma); | |
5bd4f169 | 1520 | |
805fc799 AM |
1521 | /* Invert 'y' bit if not the default. */ |
1522 | if ((bfd_signed_vma) (target - from) < 0) | |
1523 | insn ^= 0x01 << 21; | |
1524 | } | |
4ce794b7 | 1525 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1526 | out: |
1527 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1528 | input_section, output_bfd, error_message); | |
805fc799 | 1529 | } |
5bd4f169 | 1530 | |
805fc799 | 1531 | static bfd_reloc_status_type |
4ce794b7 AM |
1532 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1533 | void *data, asection *input_section, | |
1534 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1535 | { |
1536 | /* If this is a relocatable link (output_bfd test tells us), just | |
1537 | call the generic function. Any adjustment will be done at final | |
1538 | link time. */ | |
1539 | if (output_bfd != NULL) | |
cedb70c5 | 1540 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1541 | input_section, output_bfd, error_message); |
5bd4f169 | 1542 | |
805fc799 AM |
1543 | /* Subtract the symbol section base address. */ |
1544 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1545 | return bfd_reloc_continue; |
1546 | } | |
1547 | ||
805fc799 | 1548 | static bfd_reloc_status_type |
4ce794b7 AM |
1549 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1550 | void *data, asection *input_section, | |
1551 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1552 | { |
1553 | /* If this is a relocatable link (output_bfd test tells us), just | |
1554 | call the generic function. Any adjustment will be done at final | |
1555 | link time. */ | |
1556 | if (output_bfd != NULL) | |
cedb70c5 | 1557 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1558 | input_section, output_bfd, error_message); |
1559 | ||
1560 | /* Subtract the symbol section base address. */ | |
1561 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1562 | ||
1563 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1564 | reloc_entry->addend += 0x8000; | |
1565 | return bfd_reloc_continue; | |
1566 | } | |
1567 | ||
1568 | static bfd_reloc_status_type | |
4ce794b7 AM |
1569 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1570 | void *data, asection *input_section, | |
1571 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1572 | { |
1573 | bfd_vma TOCstart; | |
1574 | ||
1575 | /* If this is a relocatable link (output_bfd test tells us), just | |
1576 | call the generic function. Any adjustment will be done at final | |
1577 | link time. */ | |
1578 | if (output_bfd != NULL) | |
cedb70c5 | 1579 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1580 | input_section, output_bfd, error_message); |
1581 | ||
1582 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1583 | if (TOCstart == 0) | |
1c865ab2 | 1584 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1585 | |
1586 | /* Subtract the TOC base address. */ | |
1587 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1588 | return bfd_reloc_continue; | |
1589 | } | |
1590 | ||
1591 | static bfd_reloc_status_type | |
4ce794b7 AM |
1592 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1593 | void *data, asection *input_section, | |
1594 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1595 | { |
1596 | bfd_vma TOCstart; | |
1597 | ||
1598 | /* If this is a relocatable link (output_bfd test tells us), just | |
1599 | call the generic function. Any adjustment will be done at final | |
1600 | link time. */ | |
1601 | if (output_bfd != NULL) | |
cedb70c5 | 1602 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1603 | input_section, output_bfd, error_message); |
1604 | ||
1605 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1606 | if (TOCstart == 0) | |
1c865ab2 | 1607 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1608 | |
1609 | /* Subtract the TOC base address. */ | |
1610 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1611 | ||
1612 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1613 | reloc_entry->addend += 0x8000; | |
1614 | return bfd_reloc_continue; | |
1615 | } | |
1616 | ||
1617 | static bfd_reloc_status_type | |
4ce794b7 AM |
1618 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1619 | void *data, asection *input_section, | |
1620 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1621 | { |
1622 | bfd_vma TOCstart; | |
1623 | bfd_size_type octets; | |
1624 | ||
1625 | /* If this is a relocatable link (output_bfd test tells us), just | |
1626 | call the generic function. Any adjustment will be done at final | |
1627 | link time. */ | |
1628 | if (output_bfd != NULL) | |
cedb70c5 | 1629 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1630 | input_section, output_bfd, error_message); |
1631 | ||
1632 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1633 | if (TOCstart == 0) | |
1c865ab2 | 1634 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 | 1635 | |
bb294208 | 1636 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1637 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); |
1638 | return bfd_reloc_ok; | |
1639 | } | |
1640 | ||
5663e321 AM |
1641 | static bfd_reloc_status_type |
1642 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1643 | void *data, asection *input_section, | |
1644 | bfd *output_bfd, char **error_message) | |
1645 | { | |
1646 | uint64_t insn; | |
1647 | bfd_vma targ; | |
1648 | ||
1649 | if (output_bfd != NULL) | |
1650 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1651 | input_section, output_bfd, error_message); | |
1652 | ||
1653 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1654 | insn <<= 32; | |
1655 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1656 | ||
1657 | targ = (symbol->section->output_section->vma | |
1658 | + symbol->section->output_offset | |
1659 | + reloc_entry->addend); | |
1660 | if (!bfd_is_com_section (symbol->section)) | |
1661 | targ += symbol->value; | |
1662 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1663 | targ += 1ULL << 33; | |
1664 | if (reloc_entry->howto->pc_relative) | |
1665 | { | |
1666 | bfd_vma from = (reloc_entry->address | |
1667 | + input_section->output_offset | |
1668 | + input_section->output_section->vma); | |
1669 | targ -=from; | |
1670 | } | |
1671 | targ >>= reloc_entry->howto->rightshift; | |
1672 | insn &= ~reloc_entry->howto->dst_mask; | |
1673 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1674 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1675 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1676 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1677 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1678 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1679 | return bfd_reloc_overflow; | |
1680 | return bfd_reloc_ok; | |
1681 | } | |
1682 | ||
805fc799 | 1683 | static bfd_reloc_status_type |
4ce794b7 AM |
1684 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1685 | void *data, asection *input_section, | |
1686 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1687 | { |
1688 | /* If this is a relocatable link (output_bfd test tells us), just | |
1689 | call the generic function. Any adjustment will be done at final | |
1690 | link time. */ | |
1691 | if (output_bfd != NULL) | |
cedb70c5 | 1692 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1693 | input_section, output_bfd, error_message); |
1694 | ||
1695 | if (error_message != NULL) | |
1696 | { | |
1697 | static char buf[60]; | |
1698 | sprintf (buf, "generic linker can't handle %s", | |
1699 | reloc_entry->howto->name); | |
1700 | *error_message = buf; | |
1701 | } | |
1702 | return bfd_reloc_dangerous; | |
1703 | } | |
1704 | ||
927be08e AM |
1705 | /* Track GOT entries needed for a given symbol. We might need more |
1706 | than one got entry per symbol. */ | |
1707 | struct got_entry | |
1708 | { | |
1709 | struct got_entry *next; | |
1710 | ||
1711 | /* The symbol addend that we'll be placing in the GOT. */ | |
1712 | bfd_vma addend; | |
1713 | ||
1714 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1715 | symbol referenced from different input files. This is to support | |
1716 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1717 | from one input file to another. After partitioning into TOC groups | |
1718 | we merge entries within the group. | |
1719 | ||
1720 | Point to the BFD owning this GOT entry. */ | |
1721 | bfd *owner; | |
1722 | ||
1723 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1724 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1725 | unsigned char tls_type; |
927be08e AM |
1726 | |
1727 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1728 | unsigned char is_indirect; |
927be08e AM |
1729 | |
1730 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1731 | union | |
2cdcc330 AM |
1732 | { |
1733 | bfd_signed_vma refcount; | |
1734 | bfd_vma offset; | |
1735 | struct got_entry *ent; | |
1736 | } got; | |
927be08e AM |
1737 | }; |
1738 | ||
1739 | /* The same for PLT. */ | |
1740 | struct plt_entry | |
1741 | { | |
1742 | struct plt_entry *next; | |
1743 | ||
1744 | bfd_vma addend; | |
1745 | ||
1746 | union | |
2cdcc330 AM |
1747 | { |
1748 | bfd_signed_vma refcount; | |
1749 | bfd_vma offset; | |
1750 | } plt; | |
927be08e AM |
1751 | }; |
1752 | ||
e717da7e AM |
1753 | struct ppc64_elf_obj_tdata |
1754 | { | |
1755 | struct elf_obj_tdata elf; | |
1756 | ||
1757 | /* Shortcuts to dynamic linker sections. */ | |
1758 | asection *got; | |
1759 | asection *relgot; | |
1760 | ||
b3fac117 AM |
1761 | /* Used during garbage collection. We attach global symbols defined |
1762 | on removed .opd entries to this section so that the sym is removed. */ | |
1763 | asection *deleted_section; | |
81688140 | 1764 | |
927be08e | 1765 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1766 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1767 | struct got_entry tlsld_got; |
8860955f | 1768 | |
2cdcc330 AM |
1769 | union |
1770 | { | |
729eabd5 AM |
1771 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1772 | Elf_Internal_Rela *relocs; | |
1773 | ||
1774 | /* Section contents. */ | |
1775 | bfd_byte *contents; | |
1776 | } opd; | |
d77c8a4b AM |
1777 | |
1778 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1779 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1780 | unsigned int has_small_toc_reloc : 1; |
1781 | ||
560c8763 AM |
1782 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1783 | instruction not one we handle. */ | |
1784 | unsigned int unexpected_toc_insn : 1; | |
066f4018 | 1785 | |
903b777d AM |
1786 | /* Set if PLT/GOT/TOC relocs that can be optimised are present in |
1787 | this file. */ | |
1788 | unsigned int has_optrel : 1; | |
e717da7e AM |
1789 | }; |
1790 | ||
1791 | #define ppc64_elf_tdata(bfd) \ | |
1792 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1793 | ||
1794 | #define ppc64_tlsld_got(bfd) \ | |
1795 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1796 | ||
0c8d6e5c AM |
1797 | #define is_ppc64_elf(bfd) \ |
1798 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1799 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1800 | |
e717da7e AM |
1801 | /* Override the generic function because we store some extras. */ |
1802 | ||
1803 | static bfd_boolean | |
1804 | ppc64_elf_mkobject (bfd *abfd) | |
1805 | { | |
0ffa91dd | 1806 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1807 | PPC64_ELF_DATA); |
e717da7e AM |
1808 | } |
1809 | ||
feee612b | 1810 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1811 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1812 | |
b34976b6 | 1813 | static bfd_boolean |
4ce794b7 | 1814 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1815 | { |
14b57c7c AM |
1816 | if (!abfd->arch_info->the_default) |
1817 | return TRUE; | |
1818 | ||
1819 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1820 | { |
1821 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1822 | ||
1823 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1824 | { | |
1825 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1826 | abfd->arch_info = abfd->arch_info->next; | |
1827 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1828 | } | |
1829 | } | |
14b57c7c | 1830 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1831 | } |
1832 | ||
d37c89e5 AM |
1833 | /* Support for core dump NOTE sections. */ |
1834 | ||
1835 | static bfd_boolean | |
1836 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1837 | { | |
eea6121a | 1838 | size_t offset, size; |
d37c89e5 AM |
1839 | |
1840 | if (note->descsz != 504) | |
1841 | return FALSE; | |
1842 | ||
1843 | /* pr_cursig */ | |
228e534f | 1844 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1845 | |
1846 | /* pr_pid */ | |
228e534f | 1847 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1848 | |
1849 | /* pr_reg */ | |
1850 | offset = 112; | |
eea6121a | 1851 | size = 384; |
d37c89e5 AM |
1852 | |
1853 | /* Make a ".reg/999" section. */ | |
1854 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1855 | size, note->descpos + offset); |
d37c89e5 AM |
1856 | } |
1857 | ||
1858 | static bfd_boolean | |
1859 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1860 | { | |
1861 | if (note->descsz != 136) | |
1862 | return FALSE; | |
1863 | ||
228e534f | 1864 | elf_tdata (abfd)->core->pid |
bc989cdc | 1865 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1866 | elf_tdata (abfd)->core->program |
d37c89e5 | 1867 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1868 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1869 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1870 | ||
1871 | return TRUE; | |
1872 | } | |
1873 | ||
183e98be AM |
1874 | static char * |
1875 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1876 | ...) | |
1877 | { | |
1878 | switch (note_type) | |
1879 | { | |
1880 | default: | |
1881 | return NULL; | |
1882 | ||
1883 | case NT_PRPSINFO: | |
1884 | { | |
9ef6d1e3 | 1885 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1886 | va_list ap; |
1887 | ||
1888 | va_start (ap, note_type); | |
75cd47ed | 1889 | memset (data, 0, sizeof (data)); |
183e98be | 1890 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1891 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1892 | DIAGNOSTIC_PUSH; |
be3e27bb | 1893 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1894 | -Wstringop-truncation: |
1895 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1896 | */ | |
95da9854 L |
1897 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1898 | #endif | |
183e98be | 1899 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1900 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1901 | DIAGNOSTIC_POP; |
fe75810f | 1902 | #endif |
183e98be AM |
1903 | va_end (ap); |
1904 | return elfcore_write_note (abfd, buf, bufsiz, | |
1905 | "CORE", note_type, data, sizeof (data)); | |
1906 | } | |
1907 | ||
1908 | case NT_PRSTATUS: | |
1909 | { | |
1910 | char data[504]; | |
1911 | va_list ap; | |
1912 | long pid; | |
1913 | int cursig; | |
1914 | const void *greg; | |
1915 | ||
1916 | va_start (ap, note_type); | |
1917 | memset (data, 0, 112); | |
1918 | pid = va_arg (ap, long); | |
1919 | bfd_put_32 (abfd, pid, data + 32); | |
1920 | cursig = va_arg (ap, int); | |
1921 | bfd_put_16 (abfd, cursig, data + 12); | |
1922 | greg = va_arg (ap, const void *); | |
1923 | memcpy (data + 112, greg, 384); | |
1924 | memset (data + 496, 0, 8); | |
1925 | va_end (ap); | |
1926 | return elfcore_write_note (abfd, buf, bufsiz, | |
1927 | "CORE", note_type, data, sizeof (data)); | |
1928 | } | |
1929 | } | |
1930 | } | |
1931 | ||
5d35169e AM |
1932 | /* Add extra PPC sections. */ |
1933 | ||
2cdcc330 | 1934 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1935 | { |
07d6d2b8 AM |
1936 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1937 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1938 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1939 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1940 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1941 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1942 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1943 | }; |
1944 | ||
7c8fe5c4 AM |
1945 | enum _ppc64_sec_type { |
1946 | sec_normal = 0, | |
1947 | sec_opd = 1, | |
1948 | sec_toc = 2 | |
1949 | }; | |
1950 | ||
f0abc2a1 AM |
1951 | struct _ppc64_elf_section_data |
1952 | { | |
1953 | struct bfd_elf_section_data elf; | |
411e1bfb | 1954 | |
f0abc2a1 AM |
1955 | union |
1956 | { | |
51aecdc5 AM |
1957 | /* An array with one entry for each opd function descriptor, |
1958 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1959 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1960 | struct _opd_sec_data |
1961 | { | |
1962 | /* Points to the function code section for local opd entries. */ | |
1963 | asection **func_sec; | |
1964 | ||
1965 | /* After editing .opd, adjust references to opd local syms. */ | |
1966 | long *adjust; | |
1967 | } opd; | |
7c8fe5c4 | 1968 | |
3a71aa26 AM |
1969 | /* An array for toc sections, indexed by offset/8. */ |
1970 | struct _toc_sec_data | |
1971 | { | |
1972 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1973 | unsigned *symndx; | |
1974 | ||
1975 | /* And the relocation addend. */ | |
1976 | bfd_vma *add; | |
1977 | } toc; | |
7c8fe5c4 AM |
1978 | } u; |
1979 | ||
1980 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 1981 | |
7c8fe5c4 AM |
1982 | /* Flag set when small branches are detected. Used to |
1983 | select suitable defaults for the stub group size. */ | |
1984 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
1985 | |
1986 | /* Flag set when PLTCALL relocs are detected. */ | |
1987 | unsigned int has_pltcall:1; | |
066f4018 | 1988 | |
903b777d AM |
1989 | /* Flag set when section has PLT/GOT/TOC relocations that can be |
1990 | optimised. */ | |
1991 | unsigned int has_optrel:1; | |
f0abc2a1 AM |
1992 | }; |
1993 | ||
1994 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 1995 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
1996 | |
1997 | static bfd_boolean | |
4ce794b7 | 1998 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1999 | { |
f592407e AM |
2000 | if (!sec->used_by_bfd) |
2001 | { | |
2002 | struct _ppc64_elf_section_data *sdata; | |
2003 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2004 | |
f592407e AM |
2005 | sdata = bfd_zalloc (abfd, amt); |
2006 | if (sdata == NULL) | |
2007 | return FALSE; | |
2008 | sec->used_by_bfd = sdata; | |
2009 | } | |
f0abc2a1 AM |
2010 | |
2011 | return _bfd_elf_new_section_hook (abfd, sec); | |
2012 | } | |
4025353c | 2013 | |
74f0fb50 | 2014 | static struct _opd_sec_data * |
4025353c AM |
2015 | get_opd_info (asection * sec) |
2016 | { | |
2017 | if (sec != NULL | |
2018 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2019 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2020 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2021 | return NULL; |
2022 | } | |
90e3cdf2 JJ |
2023 | \f |
2024 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 2025 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 2026 | static asection *synthetic_opd; |
90e3cdf2 | 2027 | |
699733f6 | 2028 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2029 | |
2030 | static int | |
2031 | compare_symbols (const void *ap, const void *bp) | |
2032 | { | |
2cdcc330 AM |
2033 | const asymbol *a = *(const asymbol **) ap; |
2034 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 2035 | |
699733f6 AM |
2036 | /* Section symbols first. */ |
2037 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2038 | return -1; |
699733f6 | 2039 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2040 | return 1; |
2041 | ||
699733f6 | 2042 | /* then .opd symbols. */ |
cd285db5 AM |
2043 | if (synthetic_opd != NULL) |
2044 | { | |
2045 | if (strcmp (a->section->name, ".opd") == 0 | |
2046 | && strcmp (b->section->name, ".opd") != 0) | |
2047 | return -1; | |
2048 | if (strcmp (a->section->name, ".opd") != 0 | |
2049 | && strcmp (b->section->name, ".opd") == 0) | |
2050 | return 1; | |
2051 | } | |
90e3cdf2 | 2052 | |
699733f6 | 2053 | /* then other code symbols. */ |
2cdcc330 AM |
2054 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2055 | == (SEC_CODE | SEC_ALLOC)) | |
2056 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2057 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2058 | return -1; |
2059 | ||
2cdcc330 AM |
2060 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2061 | != (SEC_CODE | SEC_ALLOC)) | |
2062 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2063 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2064 | return 1; |
2065 | ||
2066 | if (synthetic_relocatable) | |
2067 | { | |
2068 | if (a->section->id < b->section->id) | |
2069 | return -1; | |
2070 | ||
2071 | if (a->section->id > b->section->id) | |
2072 | return 1; | |
2073 | } | |
2074 | ||
2075 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2076 | return -1; | |
2077 | ||
2078 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2079 | return 1; | |
2080 | ||
4d35a0aa AM |
2081 | /* For syms with the same value, prefer strong dynamic global function |
2082 | syms over other syms. */ | |
2083 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2084 | return -1; | |
2085 | ||
2086 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2087 | return 1; | |
2088 | ||
2089 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2090 | return -1; | |
2091 | ||
2092 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2093 | return 1; | |
2094 | ||
2095 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2096 | return -1; | |
2097 | ||
2098 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2099 | return 1; | |
2100 | ||
2101 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2102 | return -1; | |
2103 | ||
2104 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2105 | return 1; | |
2106 | ||
dcea6a95 AM |
2107 | /* Finally, sort on where the symbol is in memory. The symbols will |
2108 | be in at most two malloc'd blocks, one for static syms, one for | |
2109 | dynamic syms, and we distinguish the two blocks above by testing | |
2110 | BSF_DYNAMIC. Since we are sorting the symbol pointers which were | |
2111 | originally in the same order as the symbols (and we're not | |
2112 | sorting the symbols themselves), this ensures a stable sort. */ | |
2113 | if (a < b) | |
2114 | return -1; | |
2115 | if (a > b) | |
2116 | return 1; | |
2117 | return 0; | |
90e3cdf2 JJ |
2118 | } |
2119 | ||
699733f6 | 2120 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2121 | |
699733f6 | 2122 | static asymbol * |
9ad9b810 AM |
2123 | sym_exists_at (asymbol **syms, size_t lo, size_t hi, unsigned int id, |
2124 | bfd_vma value) | |
90e3cdf2 | 2125 | { |
9ad9b810 | 2126 | size_t mid; |
90e3cdf2 | 2127 | |
7292b3ac | 2128 | if (id == (unsigned) -1) |
699733f6 AM |
2129 | { |
2130 | while (lo < hi) | |
2131 | { | |
2132 | mid = (lo + hi) >> 1; | |
2133 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2134 | lo = mid + 1; | |
2135 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2136 | hi = mid; | |
2137 | else | |
2138 | return syms[mid]; | |
2139 | } | |
2140 | } | |
2141 | else | |
2142 | { | |
2143 | while (lo < hi) | |
2144 | { | |
2145 | mid = (lo + hi) >> 1; | |
2146 | if (syms[mid]->section->id < id) | |
2147 | lo = mid + 1; | |
2148 | else if (syms[mid]->section->id > id) | |
2149 | hi = mid; | |
2150 | else if (syms[mid]->value < value) | |
2151 | lo = mid + 1; | |
2152 | else if (syms[mid]->value > value) | |
2153 | hi = mid; | |
2154 | else | |
2155 | return syms[mid]; | |
2156 | } | |
2157 | } | |
2158 | return NULL; | |
90e3cdf2 JJ |
2159 | } |
2160 | ||
468392fb AM |
2161 | static bfd_boolean |
2162 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2163 | { | |
2164 | bfd_vma vma = *(bfd_vma *) ptr; | |
2165 | return ((section->flags & SEC_ALLOC) != 0 | |
2166 | && section->vma <= vma | |
2167 | && vma < section->vma + section->size); | |
2168 | } | |
2169 | ||
699733f6 | 2170 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2171 | entry syms. Also generate @plt symbols for the glink branch table. |
2172 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2173 | |
2174 | static long | |
a7535cf3 AM |
2175 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2176 | long static_count, asymbol **static_syms, | |
2177 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2178 | asymbol **ret) |
90e3cdf2 JJ |
2179 | { |
2180 | asymbol *s; | |
0ccf57bd | 2181 | size_t i, j, count; |
90e3cdf2 | 2182 | char *names; |
0ccf57bd | 2183 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2184 | asection *opd = NULL; |
90e3cdf2 | 2185 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2186 | asymbol **syms; |
ee67d69a | 2187 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2188 | |
2189 | *ret = NULL; | |
2190 | ||
ee67d69a AM |
2191 | if (abi < 2) |
2192 | { | |
2193 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2194 | if (opd == NULL && abi == 1) | |
2195 | return 0; | |
2196 | } | |
90e3cdf2 | 2197 | |
a5259595 AM |
2198 | syms = NULL; |
2199 | codesecsym = 0; | |
2200 | codesecsymend = 0; | |
2201 | secsymend = 0; | |
2202 | opdsymend = 0; | |
2203 | symcount = 0; | |
2204 | if (opd != NULL) | |
c9727e01 | 2205 | { |
a5259595 AM |
2206 | symcount = static_count; |
2207 | if (!relocatable) | |
2208 | symcount += dyn_count; | |
2209 | if (symcount == 0) | |
2210 | return 0; | |
c9727e01 | 2211 | |
a5259595 AM |
2212 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2213 | if (syms == NULL) | |
2214 | return -1; | |
90e3cdf2 | 2215 | |
a5259595 AM |
2216 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2217 | { | |
2218 | /* Use both symbol tables. */ | |
2219 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2220 | memcpy (syms + static_count, dyn_syms, | |
2221 | (dyn_count + 1) * sizeof (*syms)); | |
2222 | } | |
2223 | else if (!relocatable && static_count == 0) | |
2224 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2225 | else | |
2226 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2227 | |
0ccf57bd AM |
2228 | /* Trim uninteresting symbols. Interesting symbols are section, |
2229 | function, and notype symbols. */ | |
2230 | for (i = 0, j = 0; i < symcount; ++i) | |
2231 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2232 | | BSF_RELC | BSF_SRELC)) == 0) | |
2233 | syms[j++] = syms[i]; | |
2234 | symcount = j; | |
2235 | ||
a5259595 AM |
2236 | synthetic_relocatable = relocatable; |
2237 | synthetic_opd = opd; | |
2238 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2239 | |
a5259595 AM |
2240 | if (!relocatable && symcount > 1) |
2241 | { | |
bfa5bd2a PA |
2242 | /* Trim duplicate syms, since we may have merged the normal |
2243 | and dynamic symbols. Actually, we only care about syms | |
2244 | that have different values, so trim any with the same | |
2245 | value. Don't consider ifunc and ifunc resolver symbols | |
2246 | duplicates however, because GDB wants to know whether a | |
2247 | text symbol is an ifunc resolver. */ | |
a5259595 | 2248 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2249 | { |
2250 | const asymbol *s0 = syms[i - 1]; | |
2251 | const asymbol *s1 = syms[i]; | |
2252 | ||
2253 | if ((s0->value + s0->section->vma | |
2254 | != s1->value + s1->section->vma) | |
2255 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2256 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2257 | syms[j++] = syms[i]; | |
2258 | } | |
a5259595 AM |
2259 | symcount = j; |
2260 | } | |
699733f6 | 2261 | |
a5259595 AM |
2262 | i = 0; |
2263 | /* Note that here and in compare_symbols we can't compare opd and | |
2264 | sym->section directly. With separate debug info files, the | |
2265 | symbols will be extracted from the debug file while abfd passed | |
2266 | to this function is the real binary. */ | |
0ccf57bd | 2267 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2268 | ++i; |
2269 | codesecsym = i; | |
2270 | ||
2271 | for (; i < symcount; ++i) | |
2272 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2273 | | SEC_THREAD_LOCAL)) | |
2274 | != (SEC_CODE | SEC_ALLOC)) | |
2275 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2276 | break; | |
2277 | codesecsymend = i; | |
2278 | ||
2279 | for (; i < symcount; ++i) | |
2280 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2281 | break; | |
2282 | secsymend = i; | |
2283 | ||
2284 | for (; i < symcount; ++i) | |
2285 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2286 | break; | |
2287 | opdsymend = i; | |
2288 | ||
2289 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2290 | if (((syms[i]->section->flags |
2291 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2292 | != (SEC_CODE | SEC_ALLOC)) |
2293 | break; | |
2294 | symcount = i; | |
2295 | } | |
c9727e01 | 2296 | count = 0; |
90e3cdf2 | 2297 | |
699733f6 | 2298 | if (relocatable) |
90e3cdf2 | 2299 | { |
699733f6 AM |
2300 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2301 | arelent *r; | |
2302 | size_t size; | |
0ccf57bd | 2303 | size_t relcount; |
90e3cdf2 | 2304 | |
468392fb AM |
2305 | if (opdsymend == secsymend) |
2306 | goto done; | |
2307 | ||
699733f6 | 2308 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2309 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2310 | if (relcount == 0) |
c9727e01 | 2311 | goto done; |
90e3cdf2 | 2312 | |
7356fed5 AM |
2313 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2314 | { | |
2315 | count = -1; | |
2316 | goto done; | |
2317 | } | |
2318 | ||
699733f6 | 2319 | size = 0; |
595da8c5 | 2320 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2321 | { |
2322 | asymbol *sym; | |
90e3cdf2 | 2323 | |
595da8c5 | 2324 | while (r < opd->relocation + relcount |
699733f6 AM |
2325 | && r->address < syms[i]->value + opd->vma) |
2326 | ++r; | |
90e3cdf2 | 2327 | |
595da8c5 | 2328 | if (r == opd->relocation + relcount) |
699733f6 | 2329 | break; |
90e3cdf2 | 2330 | |
699733f6 AM |
2331 | if (r->address != syms[i]->value + opd->vma) |
2332 | continue; | |
90e3cdf2 | 2333 | |
699733f6 AM |
2334 | if (r->howto->type != R_PPC64_ADDR64) |
2335 | continue; | |
90e3cdf2 | 2336 | |
699733f6 AM |
2337 | sym = *r->sym_ptr_ptr; |
2338 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2339 | sym->section->id, sym->value + r->addend)) | |
2340 | { | |
2341 | ++count; | |
2342 | size += sizeof (asymbol); | |
2343 | size += strlen (syms[i]->name) + 2; | |
2344 | } | |
2345 | } | |
90e3cdf2 | 2346 | |
c4b0b099 AM |
2347 | if (size == 0) |
2348 | goto done; | |
699733f6 AM |
2349 | s = *ret = bfd_malloc (size); |
2350 | if (s == NULL) | |
2351 | { | |
7356fed5 | 2352 | count = -1; |
c9727e01 | 2353 | goto done; |
699733f6 | 2354 | } |
90e3cdf2 | 2355 | |
699733f6 | 2356 | names = (char *) (s + count); |
90e3cdf2 | 2357 | |
595da8c5 | 2358 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2359 | { |
699733f6 | 2360 | asymbol *sym; |
90e3cdf2 | 2361 | |
595da8c5 | 2362 | while (r < opd->relocation + relcount |
699733f6 AM |
2363 | && r->address < syms[i]->value + opd->vma) |
2364 | ++r; | |
90e3cdf2 | 2365 | |
595da8c5 | 2366 | if (r == opd->relocation + relcount) |
699733f6 AM |
2367 | break; |
2368 | ||
2369 | if (r->address != syms[i]->value + opd->vma) | |
2370 | continue; | |
2371 | ||
2372 | if (r->howto->type != R_PPC64_ADDR64) | |
2373 | continue; | |
90e3cdf2 | 2374 | |
699733f6 AM |
2375 | sym = *r->sym_ptr_ptr; |
2376 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2377 | sym->section->id, sym->value + r->addend)) | |
2378 | { | |
2379 | size_t len; | |
2380 | ||
2381 | *s = *syms[i]; | |
6ba2a415 | 2382 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2383 | s->section = sym->section; |
2384 | s->value = sym->value + r->addend; | |
2385 | s->name = names; | |
2386 | *names++ = '.'; | |
2387 | len = strlen (syms[i]->name); | |
2388 | memcpy (names, syms[i]->name, len + 1); | |
2389 | names += len + 1; | |
6f610d07 UW |
2390 | /* Have udata.p point back to the original symbol this |
2391 | synthetic symbol was derived from. */ | |
2392 | s->udata.p = syms[i]; | |
699733f6 AM |
2393 | s++; |
2394 | } | |
2395 | } | |
2396 | } | |
2397 | else | |
90e3cdf2 | 2398 | { |
468392fb | 2399 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2400 | bfd_byte *contents = NULL; |
699733f6 | 2401 | size_t size; |
0ccf57bd | 2402 | size_t plt_count = 0; |
468392fb AM |
2403 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2404 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2405 | arelent *p; | |
90e3cdf2 | 2406 | |
ee67d69a | 2407 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2408 | { |
c4b0b099 AM |
2409 | free_contents_and_exit_err: |
2410 | count = -1; | |
ee67d69a | 2411 | free_contents_and_exit: |
699733f6 | 2412 | if (contents) |
ee67d69a | 2413 | free (contents); |
c9727e01 | 2414 | goto done; |
699733f6 | 2415 | } |
90e3cdf2 | 2416 | |
699733f6 AM |
2417 | size = 0; |
2418 | for (i = secsymend; i < opdsymend; ++i) | |
2419 | { | |
2420 | bfd_vma ent; | |
90e3cdf2 | 2421 | |
5ef11c02 AM |
2422 | /* Ignore bogus symbols. */ |
2423 | if (syms[i]->value > opd->size - 8) | |
2424 | continue; | |
2425 | ||
699733f6 AM |
2426 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2427 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2428 | { | |
2429 | ++count; | |
2430 | size += sizeof (asymbol); | |
2431 | size += strlen (syms[i]->name) + 2; | |
2432 | } | |
2433 | } | |
90e3cdf2 | 2434 | |
468392fb | 2435 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2436 | if (dyn_count != 0 |
2437 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2438 | { |
2439 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2440 | size_t extdynsize; | |
2441 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2442 | ||
2443 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2444 | goto free_contents_and_exit_err; |
468392fb AM |
2445 | |
2446 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2447 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2448 | ||
2449 | extdyn = dynbuf; | |
2450 | extdynend = extdyn + dynamic->size; | |
2451 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2452 | { | |
2453 | Elf_Internal_Dyn dyn; | |
2454 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2455 | ||
2456 | if (dyn.d_tag == DT_NULL) | |
2457 | break; | |
2458 | ||
2459 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2460 | { | |
9e390558 AM |
2461 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2462 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2463 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2464 | /* The .glink section usually does not survive the final |
2465 | link; search for the section (usually .text) where the | |
2466 | glink stubs now reside. */ | |
2467 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2468 | &glink_vma); | |
2469 | break; | |
2470 | } | |
2471 | } | |
2472 | ||
2473 | free (dynbuf); | |
2474 | } | |
2475 | ||
2476 | if (glink != NULL) | |
2477 | { | |
2478 | /* Determine __glink trampoline by reading the relative branch | |
2479 | from the first glink stub. */ | |
2480 | bfd_byte buf[4]; | |
b9e5796b AM |
2481 | unsigned int off = 0; |
2482 | ||
2483 | while (bfd_get_section_contents (abfd, glink, buf, | |
2484 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2485 | { |
2486 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2487 | insn ^= B_DOT; | |
2488 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2489 | { |
2cdcc330 AM |
2490 | resolv_vma |
2491 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2492 | break; |
2493 | } | |
2494 | off += 4; | |
2495 | if (off > 4) | |
2496 | break; | |
468392fb AM |
2497 | } |
2498 | ||
2499 | if (resolv_vma) | |
2500 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2501 | |
066ee829 AM |
2502 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2503 | if (relplt != NULL) | |
2504 | { | |
2505 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2506 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2507 | goto free_contents_and_exit_err; |
68ffbac6 | 2508 | |
066ee829 AM |
2509 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2510 | size += plt_count * sizeof (asymbol); | |
468392fb | 2511 | |
066ee829 AM |
2512 | p = relplt->relocation; |
2513 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2514 | { |
2515 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2516 | if (p->addend != 0) | |
2517 | size += sizeof ("+0x") - 1 + 16; | |
2518 | } | |
066ee829 | 2519 | } |
468392fb AM |
2520 | } |
2521 | ||
c4b0b099 AM |
2522 | if (size == 0) |
2523 | goto free_contents_and_exit; | |
699733f6 AM |
2524 | s = *ret = bfd_malloc (size); |
2525 | if (s == NULL) | |
c4b0b099 | 2526 | goto free_contents_and_exit_err; |
90e3cdf2 | 2527 | |
468392fb | 2528 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2529 | |
699733f6 | 2530 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2531 | { |
699733f6 | 2532 | bfd_vma ent; |
90e3cdf2 | 2533 | |
5ef11c02 AM |
2534 | if (syms[i]->value > opd->size - 8) |
2535 | continue; | |
2536 | ||
699733f6 AM |
2537 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2538 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2539 | { |
0ccf57bd | 2540 | size_t lo, hi; |
699733f6 | 2541 | size_t len; |
c9727e01 | 2542 | asection *sec = abfd->sections; |
90e3cdf2 | 2543 | |
699733f6 AM |
2544 | *s = *syms[i]; |
2545 | lo = codesecsym; | |
2546 | hi = codesecsymend; | |
2547 | while (lo < hi) | |
2548 | { | |
0ccf57bd | 2549 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2550 | if (syms[mid]->section->vma < ent) |
2551 | lo = mid + 1; | |
2552 | else if (syms[mid]->section->vma > ent) | |
2553 | hi = mid; | |
2554 | else | |
c9727e01 AM |
2555 | { |
2556 | sec = syms[mid]->section; | |
2557 | break; | |
2558 | } | |
699733f6 AM |
2559 | } |
2560 | ||
c9727e01 | 2561 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2562 | sec = syms[lo - 1]->section; |
699733f6 AM |
2563 | |
2564 | for (; sec != NULL; sec = sec->next) | |
2565 | { | |
2566 | if (sec->vma > ent) | |
2567 | break; | |
63524580 JK |
2568 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2569 | info file. */ | |
2570 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2571 | break; |
2572 | if ((sec->flags & SEC_CODE) != 0) | |
2573 | s->section = sec; | |
2574 | } | |
6ba2a415 | 2575 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2576 | s->value = ent - s->section->vma; |
2577 | s->name = names; | |
2578 | *names++ = '.'; | |
2579 | len = strlen (syms[i]->name); | |
2580 | memcpy (names, syms[i]->name, len + 1); | |
2581 | names += len + 1; | |
6f610d07 UW |
2582 | /* Have udata.p point back to the original symbol this |
2583 | synthetic symbol was derived from. */ | |
2584 | s->udata.p = syms[i]; | |
699733f6 | 2585 | s++; |
90e3cdf2 | 2586 | } |
90e3cdf2 | 2587 | } |
699733f6 | 2588 | free (contents); |
468392fb AM |
2589 | |
2590 | if (glink != NULL && relplt != NULL) | |
2591 | { | |
2592 | if (resolv_vma) | |
2593 | { | |
2594 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2595 | memset (s, 0, sizeof *s); |
468392fb | 2596 | s->the_bfd = abfd; |
6ba2a415 | 2597 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2598 | s->section = glink; |
2599 | s->value = resolv_vma - glink->vma; | |
2600 | s->name = names; | |
2cdcc330 AM |
2601 | memcpy (names, "__glink_PLTresolve", |
2602 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2603 | names += sizeof ("__glink_PLTresolve"); |
2604 | s++; | |
2605 | count++; | |
2606 | } | |
2607 | ||
2608 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2609 | stub rather than on the glink branch table entry. The | |
2610 | objdump disassembler would then use a sensible symbol | |
2611 | name on plt calls. The difficulty in doing so is | |
2612 | a) finding the stubs, and, | |
2613 | b) matching stubs against plt entries, and, | |
2614 | c) there can be multiple stubs for a given plt entry. | |
2615 | ||
2616 | Solving (a) could be done by code scanning, but older | |
2617 | ppc64 binaries used different stubs to current code. | |
2618 | (b) is the tricky one since you need to known the toc | |
2619 | pointer for at least one function that uses a pic stub to | |
2620 | be able to calculate the plt address referenced. | |
2621 | (c) means gdb would need to set multiple breakpoints (or | |
2622 | find the glink branch itself) when setting breakpoints | |
2623 | for pending shared library loads. */ | |
2624 | p = relplt->relocation; | |
2625 | for (i = 0; i < plt_count; i++, p++) | |
2626 | { | |
2627 | size_t len; | |
2628 | ||
2629 | *s = **p->sym_ptr_ptr; | |
2630 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2631 | we are defining a symbol, ensure one of them is set. */ | |
2632 | if ((s->flags & BSF_LOCAL) == 0) | |
2633 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2634 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2635 | s->section = glink; |
2636 | s->value = glink_vma - glink->vma; | |
2637 | s->name = names; | |
2638 | s->udata.p = NULL; | |
2639 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2640 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2641 | names += len; | |
e054468f AM |
2642 | if (p->addend != 0) |
2643 | { | |
2644 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2645 | names += sizeof ("+0x") - 1; | |
2646 | bfd_sprintf_vma (abfd, names, p->addend); | |
2647 | names += strlen (names); | |
2648 | } | |
468392fb AM |
2649 | memcpy (names, "@plt", sizeof ("@plt")); |
2650 | names += sizeof ("@plt"); | |
2651 | s++; | |
b9e5796b AM |
2652 | if (abi < 2) |
2653 | { | |
2654 | glink_vma += 8; | |
2655 | if (i >= 0x8000) | |
2656 | glink_vma += 4; | |
2657 | } | |
2658 | else | |
468392fb AM |
2659 | glink_vma += 4; |
2660 | } | |
2661 | count += plt_count; | |
2662 | } | |
90e3cdf2 JJ |
2663 | } |
2664 | ||
c9727e01 | 2665 | done: |
a7535cf3 | 2666 | free (syms); |
90e3cdf2 JJ |
2667 | return count; |
2668 | } | |
5bd4f169 | 2669 | \f |
65f38f15 AM |
2670 | /* The following functions are specific to the ELF linker, while |
2671 | functions above are used generally. Those named ppc64_elf_* are | |
2672 | called by the main ELF linker code. They appear in this file more | |
2673 | or less in the order in which they are called. eg. | |
2674 | ppc64_elf_check_relocs is called early in the link process, | |
2675 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2676 | called. |
2677 | ||
2678 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2679 | functions have both a function code symbol and a function descriptor | |
2680 | symbol. A call to foo in a relocatable object file looks like: | |
2681 | ||
2682 | . .text | |
2683 | . x: | |
2684 | . bl .foo | |
2685 | . nop | |
2686 | ||
2687 | The function definition in another object file might be: | |
2688 | ||
2689 | . .section .opd | |
2690 | . foo: .quad .foo | |
2691 | . .quad .TOC.@tocbase | |
2692 | . .quad 0 | |
2693 | . | |
2694 | . .text | |
2695 | . .foo: blr | |
2696 | ||
2697 | When the linker resolves the call during a static link, the branch | |
2698 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2699 | If the function definition is in a shared library, things are a little | |
2700 | different: The call goes via a plt call stub, the opd information gets | |
2701 | copied to the plt, and the linker patches the nop. | |
2702 | ||
2703 | . x: | |
2704 | . bl .foo_stub | |
2705 | . ld 2,40(1) | |
2706 | . | |
2707 | . | |
2708 | . .foo_stub: | |
71a39c98 AM |
2709 | . std 2,40(1) # in practice, the call stub |
2710 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2711 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2712 | . ld 12,0(11) | |
2713 | . ld 2,8(11) | |
2714 | . mtctr 12 | |
2715 | . ld 11,16(11) | |
e86ce104 AM |
2716 | . bctr |
2717 | . | |
2718 | . .section .plt | |
2719 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2720 | ||
2721 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2722 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2723 | copying. | |
2724 | ||
2725 | What are the difficulties here? Well, firstly, the relocations | |
2726 | examined by the linker in check_relocs are against the function code | |
2727 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2728 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2729 | to carefully copy dynamic link information from one symbol to the other. | |
2730 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2731 | symbol as is normal for most other backends. We need foo dynamic | |
2732 | instead, at least for an application final link. However, when | |
2733 | creating a shared library containing foo, we need to have both symbols | |
2734 | dynamic so that references to .foo are satisfied during the early | |
2735 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2736 | definition from some other object, eg. a static library. |
2737 | ||
2738 | Update: As of August 2004, we support a new convention. Function | |
2739 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2740 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2741 | |
7c8bbca5 AM |
2742 | /* Of those relocs that might be copied as dynamic relocs, this |
2743 | function selects those that must be copied when linking a shared | |
2744 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2745 | |
1d483afe AM |
2746 | static int |
2747 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2748 | enum elf_ppc64_reloc_type r_type) | |
2749 | { | |
2750 | switch (r_type) | |
2751 | { | |
2752 | default: | |
7c8bbca5 AM |
2753 | /* Only relative relocs can be resolved when the object load |
2754 | address isn't fixed. DTPREL64 is excluded because the | |
2755 | dynamic linker needs to differentiate global dynamic from | |
2756 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2757 | return 1; |
2758 | ||
2759 | case R_PPC64_REL32: | |
2760 | case R_PPC64_REL64: | |
2761 | case R_PPC64_REL30: | |
1bdd8fac AM |
2762 | case R_PPC64_TOC16: |
2763 | case R_PPC64_TOC16_DS: | |
2764 | case R_PPC64_TOC16_LO: | |
2765 | case R_PPC64_TOC16_HI: | |
2766 | case R_PPC64_TOC16_HA: | |
2767 | case R_PPC64_TOC16_LO_DS: | |
1d483afe AM |
2768 | return 0; |
2769 | ||
2770 | case R_PPC64_TPREL16: | |
2771 | case R_PPC64_TPREL16_LO: | |
2772 | case R_PPC64_TPREL16_HI: | |
2773 | case R_PPC64_TPREL16_HA: | |
2774 | case R_PPC64_TPREL16_DS: | |
2775 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2776 | case R_PPC64_TPREL16_HIGH: |
2777 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2778 | case R_PPC64_TPREL16_HIGHER: |
2779 | case R_PPC64_TPREL16_HIGHERA: | |
2780 | case R_PPC64_TPREL16_HIGHEST: | |
2781 | case R_PPC64_TPREL16_HIGHESTA: | |
2782 | case R_PPC64_TPREL64: | |
c213164a | 2783 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
2784 | /* These relocations are relative but in a shared library the |
2785 | linker doesn't know the thread pointer base. */ | |
2786 | return bfd_link_dll (info); | |
1d483afe AM |
2787 | } |
2788 | } | |
65f38f15 | 2789 | |
f4656909 | 2790 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
e1c6cf61 | 2791 | copying dynamic variables from a shared lib into an app's .dynbss |
f4656909 | 2792 | section, and instead use a dynamic relocation to point into the |
e1c6cf61 AM |
2793 | shared lib. With code that gcc generates it is vital that this be |
2794 | enabled; In the PowerPC64 ELFv1 ABI the address of a function is | |
2795 | actually the address of a function descriptor which resides in the | |
2796 | .opd section. gcc uses the descriptor directly rather than going | |
2797 | via the GOT as some other ABIs do, which means that initialized | |
2798 | function pointers reference the descriptor. Thus, a function | |
2799 | pointer initialized to the address of a function in a shared | |
2800 | library will either require a .dynbss copy and a copy reloc, or a | |
2801 | dynamic reloc. Using a .dynbss copy redefines the function | |
2802 | descriptor symbol to point to the copy. This presents a problem as | |
2803 | a PLT entry for that function is also initialized from the function | |
2804 | descriptor symbol and the copy may not be initialized first. */ | |
a23b6845 | 2805 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2806 | |
721956f4 | 2807 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2808 | string. */ |
2809 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2810 | |
2811 | /* Linker stubs. | |
2812 | ppc_stub_long_branch: | |
2813 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2814 | destination, but a 24 bit branch in a stub section will reach. | |
2815 | . b dest | |
2816 | ||
2817 | ppc_stub_plt_branch: | |
2818 | Similar to the above, but a 24 bit branch in the stub section won't | |
2819 | reach its destination. | |
71a39c98 AM |
2820 | . addis %r11,%r2,xxx@toc@ha |
2821 | . ld %r12,xxx@toc@l(%r11) | |
2822 | . mtctr %r12 | |
721956f4 AM |
2823 | . bctr |
2824 | ||
2825 | ppc_stub_plt_call: | |
2c66dc6c AM |
2826 | Used to call a function in a shared library. If it so happens that |
2827 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2828 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2829 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2830 | . addis %r11,%r2,xxx@toc@ha |
2831 | . ld %r12,xxx+0@toc@l(%r11) | |
2832 | . mtctr %r12 | |
2833 | . ld %r2,xxx+8@toc@l(%r11) | |
2834 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2835 | . bctr |
ad8e1ba5 AM |
2836 | |
2837 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2838 | code to adjust the value and save r2 to support multiple toc sections. | |
2839 | A ppc_stub_long_branch with an r2 offset looks like: | |
2840 | . std %r2,40(%r1) | |
2841 | . addis %r2,%r2,off@ha | |
2842 | . addi %r2,%r2,off@l | |
2843 | . b dest | |
2844 | ||
2845 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2846 | . std %r2,40(%r1) | |
71a39c98 AM |
2847 | . addis %r11,%r2,xxx@toc@ha |
2848 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
2849 | . addis %r2,%r2,off@ha |
2850 | . addi %r2,%r2,off@l | |
71a39c98 | 2851 | . mtctr %r12 |
ad8e1ba5 | 2852 | . bctr |
ac2df442 | 2853 | |
05d0e962 AM |
2854 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2855 | variants exist too, simpler for plt calls since a new toc pointer | |
2856 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2857 | has some more complex stubs to handle calls marked with NOTOC | |
2858 | relocs from functions where r2 is not a valid toc pointer. These | |
2859 | come in two flavours, the ones shown below, and _both variants that | |
2860 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2861 | one call is from a function where r2 is used as the toc pointer but | |
2862 | needs a toc adjusting stub for small-model multi-toc, and another | |
2863 | call is from a function where r2 is not valid. | |
2864 | ppc_stub_long_branch_notoc: | |
2865 | . mflr %r12 | |
2866 | . bcl 20,31,1f | |
2867 | . 1: | |
2868 | . mflr %r11 | |
2869 | . mtlr %r12 | |
2cdcc330 AM |
2870 | . addis %r12,%r11,dest-1b@ha |
2871 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2872 | . b dest |
2873 | ||
2874 | ppc_stub_plt_branch_notoc: | |
2875 | . mflr %r12 | |
2876 | . bcl 20,31,1f | |
2877 | . 1: | |
2878 | . mflr %r11 | |
2879 | . mtlr %r12 | |
2880 | . lis %r12,xxx-1b@highest | |
f891966f | 2881 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2882 | . sldi %r12,%r12,32 |
f891966f | 2883 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2884 | . ori %r12,%r12,xxx-1b@l |
2885 | . add %r12,%r11,%r12 | |
2886 | . mtctr %r12 | |
2887 | . bctr | |
2888 | ||
2889 | ppc_stub_plt_call_notoc: | |
2890 | . mflr %r12 | |
2891 | . bcl 20,31,1f | |
2892 | . 1: | |
2893 | . mflr %r11 | |
2894 | . mtlr %r12 | |
2895 | . lis %r12,xxx-1b@highest | |
f891966f | 2896 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2897 | . sldi %r12,%r12,32 |
f891966f | 2898 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2899 | . ori %r12,%r12,xxx-1b@l |
2900 | . ldx %r12,%r11,%r12 | |
2901 | . mtctr %r12 | |
2902 | . bctr | |
2903 | ||
04bdff6a AM |
2904 | There are also ELFv1 powerxx variants of these stubs. |
2905 | ppc_stub_long_branch_notoc: | |
d4b87b1e | 2906 | . pla %r12,dest@pcrel |
04bdff6a AM |
2907 | . b dest |
2908 | ppc_stub_plt_branch_notoc: | |
2909 | . lis %r11,(dest-1f)@highesta34 | |
2910 | . ori %r11,%r11,(dest-1f)@highera34 | |
2911 | . sldi %r11,%r11,34 | |
d4b87b1e | 2912 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2913 | . add %r12,%r11,%r12 |
2914 | . mtctr %r12 | |
2915 | . bctr | |
2916 | ppc_stub_plt_call_notoc: | |
2917 | . lis %r11,(xxx-1f)@highesta34 | |
2918 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2919 | . sldi %r11,%r11,34 | |
d4b87b1e | 2920 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2921 | . ldx %r12,%r11,%r12 |
2922 | . mtctr %r12 | |
2923 | . bctr | |
2924 | ||
05d0e962 AM |
2925 | In cases where the high instructions would add zero, they are |
2926 | omitted and following instructions modified in some cases. | |
04bdff6a AM |
2927 | For example, a powerxx ppc_stub_plt_call_notoc might simplify down |
2928 | to | |
2929 | . pld %r12,xxx@pcrel | |
2930 | . mtctr %r12 | |
2931 | . bctr | |
05d0e962 AM |
2932 | |
2933 | For a given stub group (a set of sections all using the same toc | |
2934 | pointer value) there will be just one stub type used for any | |
2935 | particular function symbol. For example, if printf is called from | |
2936 | code with the tocsave optimization (ie. r2 saved in function | |
2937 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2938 | and from other code without the tocsave optimization requiring a | |
2939 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2940 | type will be created. Calls with the tocsave optimization will | |
2941 | enter this stub after the instruction saving r2. A similar | |
2942 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2943 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2944 | to call an external function like printf. If other calls to printf | |
2945 | require a ppc_stub_plt_call linkage stub then a single | |
2946 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2947 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2948 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2949 | be created and calls not requiring r2 to be saved will enter the | |
2950 | stub after the r2 save instruction. There is an analogous | |
2951 | hierarchy of long branch and plt branch stubs for local call | |
2952 | linkage. */ | |
721956f4 | 2953 | |
2cdcc330 AM |
2954 | enum ppc_stub_type |
2955 | { | |
721956f4 AM |
2956 | ppc_stub_none, |
2957 | ppc_stub_long_branch, | |
ad8e1ba5 | 2958 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2959 | ppc_stub_long_branch_notoc, |
2960 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2961 | ppc_stub_plt_branch, |
ad8e1ba5 | 2962 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2963 | ppc_stub_plt_branch_notoc, |
2964 | ppc_stub_plt_branch_both, | |
794e51c0 | 2965 | ppc_stub_plt_call, |
7341d5e2 | 2966 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2967 | ppc_stub_plt_call_notoc, |
2968 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
2969 | ppc_stub_global_entry, |
2970 | ppc_stub_save_res | |
721956f4 AM |
2971 | }; |
2972 | ||
6f20ed8a AM |
2973 | /* Information on stub grouping. */ |
2974 | struct map_stub | |
2975 | { | |
2976 | /* The stub section. */ | |
2977 | asection *stub_sec; | |
2978 | /* This is the section to which stubs in the group will be attached. */ | |
2979 | asection *link_sec; | |
a4b6fadd AM |
2980 | /* Next group. */ |
2981 | struct map_stub *next; | |
2982 | /* Whether to emit a copy of register save/restore functions in this | |
2983 | group. */ | |
2984 | int needs_save_res; | |
df136d64 AM |
2985 | /* Current offset within stubs after the insn restoring lr in a |
2986 | _notoc or _both stub using bcl for pc-relative addressing, or | |
2987 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
2988 | unsigned int lr_restore; | |
2989 | /* Accumulated size of EH info emitted to describe return address | |
2990 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
2991 | unsigned int eh_size; | |
2992 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
2993 | unsigned int eh_base; | |
6f20ed8a AM |
2994 | }; |
2995 | ||
2cdcc330 AM |
2996 | struct ppc_stub_hash_entry |
2997 | { | |
721956f4 AM |
2998 | /* Base hash table entry structure. */ |
2999 | struct bfd_hash_entry root; | |
3000 | ||
ad8e1ba5 AM |
3001 | enum ppc_stub_type stub_type; |
3002 | ||
6f20ed8a AM |
3003 | /* Group information. */ |
3004 | struct map_stub *group; | |
721956f4 AM |
3005 | |
3006 | /* Offset within stub_sec of the beginning of this stub. */ | |
3007 | bfd_vma stub_offset; | |
3008 | ||
3009 | /* Given the symbol's value and its section we can determine its final | |
3010 | value when building the stubs (so the stub knows where to jump. */ | |
3011 | bfd_vma target_value; | |
3012 | asection *target_section; | |
3013 | ||
721956f4 AM |
3014 | /* The symbol table entry, if any, that this was derived from. */ |
3015 | struct ppc_link_hash_entry *h; | |
e054468f | 3016 | struct plt_entry *plt_ent; |
721956f4 | 3017 | |
2d7ad24e AM |
3018 | /* Symbol type. */ |
3019 | unsigned char symtype; | |
3020 | ||
6911b7dc AM |
3021 | /* Symbol st_other. */ |
3022 | unsigned char other; | |
721956f4 AM |
3023 | }; |
3024 | ||
2cdcc330 AM |
3025 | struct ppc_branch_hash_entry |
3026 | { | |
721956f4 AM |
3027 | /* Base hash table entry structure. */ |
3028 | struct bfd_hash_entry root; | |
3029 | ||
c456f082 | 3030 | /* Offset within branch lookup table. */ |
721956f4 AM |
3031 | unsigned int offset; |
3032 | ||
3033 | /* Generation marker. */ | |
3034 | unsigned int iter; | |
3035 | }; | |
65f38f15 | 3036 | |
19e08130 AM |
3037 | /* Used to track dynamic relocations for local symbols. */ |
3038 | struct ppc_dyn_relocs | |
3039 | { | |
3040 | struct ppc_dyn_relocs *next; | |
3041 | ||
3042 | /* The input section of the reloc. */ | |
3043 | asection *sec; | |
3044 | ||
3045 | /* Total number of relocs copied for the input section. */ | |
3046 | unsigned int count : 31; | |
3047 | ||
3048 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3049 | unsigned int ifunc : 1; | |
3050 | }; | |
3051 | ||
65f38f15 AM |
3052 | struct ppc_link_hash_entry |
3053 | { | |
3054 | struct elf_link_hash_entry elf; | |
3055 | ||
2cdcc330 AM |
3056 | union |
3057 | { | |
b3fac117 AM |
3058 | /* A pointer to the most recently used stub hash entry against this |
3059 | symbol. */ | |
3060 | struct ppc_stub_hash_entry *stub_cache; | |
3061 | ||
3062 | /* A pointer to the next symbol starting with a '.' */ | |
3063 | struct ppc_link_hash_entry *next_dot_sym; | |
3064 | } u; | |
721956f4 | 3065 | |
65f38f15 | 3066 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3067 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3068 | |
721956f4 | 3069 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3070 | struct ppc_link_hash_entry *oh; |
721956f4 | 3071 | |
e86ce104 AM |
3072 | /* Flag function code and descriptor symbols. */ |
3073 | unsigned int is_func:1; | |
3074 | unsigned int is_func_descriptor:1; | |
908b32fc | 3075 | unsigned int fake:1; |
411e1bfb | 3076 | |
c5614fa4 AM |
3077 | /* Whether global opd/toc sym has been adjusted or not. |
3078 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3079 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3080 | unsigned int adjust_done:1; |
3081 | ||
a4b6fadd AM |
3082 | /* Set if this is an out-of-line register save/restore function, |
3083 | with non-standard calling convention. */ | |
3084 | unsigned int save_res:1; | |
3085 | ||
8b5f1ed8 AM |
3086 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3087 | even when the duplicate symbol does not provide a definition. */ | |
3088 | unsigned int non_zero_localentry:1; | |
3089 | ||
411e1bfb | 3090 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3091 | Bits are or'd into the mask as the corresponding relocs are |
3092 | encountered during check_relocs, with TLS_TLS being set when any | |
3093 | of the other TLS bits are set. tls_optimize clears bits when | |
3094 | optimizing to indicate the corresponding GOT entry type is not | |
3095 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 3096 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
3097 | These flags are also kept for local symbols. */ |
3098 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3099 | #define TLS_GD 2 /* GD reloc. */ | |
3100 | #define TLS_LD 4 /* LD reloc. */ | |
3101 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3102 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3103 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 3104 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
46e9995a | 3105 | #define TLS_EXPLICIT 256 /* TOC section TLS reloc, not stored. */ |
f961d9dd | 3106 | unsigned char tls_mask; |
37da22e5 AM |
3107 | |
3108 | /* The above field is also used to mark function symbols. In which | |
3109 | case TLS_TLS will be 0. */ | |
3110 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3111 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3112 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3113 | }; |
3114 | ||
3115 | /* ppc64 ELF linker hash table. */ | |
3116 | ||
3117 | struct ppc_link_hash_table | |
3118 | { | |
3119 | struct elf_link_hash_table elf; | |
3120 | ||
721956f4 AM |
3121 | /* The stub hash table. */ |
3122 | struct bfd_hash_table stub_hash_table; | |
3123 | ||
3124 | /* Another hash table for plt_branch stubs. */ | |
3125 | struct bfd_hash_table branch_hash_table; | |
3126 | ||
3b421ab3 AM |
3127 | /* Hash table for function prologue tocsave. */ |
3128 | htab_t tocsave_htab; | |
3129 | ||
e7d1c40c AM |
3130 | /* Various options and other info passed from the linker. */ |
3131 | struct ppc64_elf_params *params; | |
721956f4 | 3132 | |
6f20ed8a AM |
3133 | /* The size of sec_info below. */ |
3134 | unsigned int sec_info_arr_size; | |
3135 | ||
3136 | /* Per-section array of extra section info. Done this way rather | |
3137 | than as part of ppc64_elf_section_data so we have the info for | |
3138 | non-ppc64 sections. */ | |
3139 | struct | |
3140 | { | |
3141 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3142 | bfd_vma toc_off; |
6f20ed8a AM |
3143 | |
3144 | union | |
3145 | { | |
3146 | /* The section group that this section belongs to. */ | |
3147 | struct map_stub *group; | |
3148 | /* A temp section list pointer. */ | |
3149 | asection *list; | |
3150 | } u; | |
3151 | } *sec_info; | |
721956f4 | 3152 | |
a4b6fadd AM |
3153 | /* Linked list of groups. */ |
3154 | struct map_stub *group; | |
3155 | ||
ad8e1ba5 AM |
3156 | /* Temp used when calculating TOC pointers. */ |
3157 | bfd_vma toc_curr; | |
bf102f86 AM |
3158 | bfd *toc_bfd; |
3159 | asection *toc_first_sec; | |
ad8e1ba5 | 3160 | |
b3fac117 AM |
3161 | /* Used when adding symbols. */ |
3162 | struct ppc_link_hash_entry *dot_syms; | |
3163 | ||
33e44f2e | 3164 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3165 | asection *glink; |
9e390558 | 3166 | asection *global_entry; |
82bd7b59 | 3167 | asection *sfpr; |
2d7ad24e AM |
3168 | asection *pltlocal; |
3169 | asection *relpltlocal; | |
4ce794b7 AM |
3170 | asection *brlt; |
3171 | asection *relbrlt; | |
58d180e8 | 3172 | asection *glink_eh_frame; |
ec338859 | 3173 | |
8387904d AM |
3174 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3175 | struct ppc_link_hash_entry *tls_get_addr; | |
3176 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3177 | |
927be08e AM |
3178 | /* The size of reliplt used by got entry relocs. */ |
3179 | bfd_size_type got_reli_size; | |
3180 | ||
9b5ecbd0 | 3181 | /* Statistics. */ |
7341d5e2 | 3182 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3183 | |
ee75fd95 AM |
3184 | /* Number of stubs against global syms. */ |
3185 | unsigned long stub_globals; | |
3186 | ||
ee67d69a AM |
3187 | /* Set if we're linking code with function descriptors. */ |
3188 | unsigned int opd_abi:1; | |
3189 | ||
4c52953f | 3190 | /* Support for multiple toc sections. */ |
33c0ec9d | 3191 | unsigned int do_multi_toc:1; |
4c52953f | 3192 | unsigned int multi_toc_needed:1; |
927be08e | 3193 | unsigned int second_toc_pass:1; |
67f0cbdb | 3194 | unsigned int do_toc_opt:1; |
4c52953f | 3195 | |
9a23f96e AM |
3196 | /* Set if tls optimization is enabled. */ |
3197 | unsigned int do_tls_opt:1; | |
3198 | ||
3e04d765 AM |
3199 | /* Set if inline plt calls should be converted to direct calls. */ |
3200 | unsigned int can_convert_all_inline_plt:1; | |
3201 | ||
5d1634d7 | 3202 | /* Set on error. */ |
99877b66 | 3203 | unsigned int stub_error:1; |
721956f4 | 3204 | |
8c5b4e52 AM |
3205 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3206 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3207 | |
82e66161 AM |
3208 | /* Whether there exist local gnu indirect function resolvers, |
3209 | referenced by dynamic relocations. */ | |
3210 | unsigned int local_ifunc_resolver:1; | |
3211 | unsigned int maybe_local_ifunc_resolver:1; | |
3212 | ||
f378ab09 AM |
3213 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3214 | unsigned int has_plt_localentry0:1; | |
3215 | ||
5663e321 AM |
3216 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3217 | unsigned int notoc_plt:1; | |
3218 | ||
04bdff6a AM |
3219 | /* Whether to use powerxx instructions in linkage stubs. */ |
3220 | unsigned int powerxx_stubs:1; | |
3221 | ||
721956f4 AM |
3222 | /* Incremented every time we size stubs. */ |
3223 | unsigned int stub_iteration; | |
5d1634d7 | 3224 | |
87d72d41 AM |
3225 | /* Small local sym cache. */ |
3226 | struct sym_cache sym_cache; | |
65f38f15 AM |
3227 | }; |
3228 | ||
4c52953f AM |
3229 | /* Rename some of the generic section flags to better document how they |
3230 | are used here. */ | |
b0dddeec AM |
3231 | |
3232 | /* Nonzero if this section has TLS related relocations. */ | |
3233 | #define has_tls_reloc sec_flg0 | |
3234 | ||
9737e8af AM |
3235 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3236 | relocations. */ | |
3237 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3238 | |
3239 | /* Nonzero if this section has any toc or got relocs. */ | |
3240 | #define has_toc_reloc sec_flg2 | |
3241 | ||
3242 | /* Nonzero if this section has a call to another section that uses | |
3243 | the toc or got. */ | |
d77c8a4b | 3244 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3245 | |
3246 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3247 | #define call_check_in_progress sec_flg4 |
70cc837d | 3248 | #define call_check_done sec_flg5 |
4c52953f | 3249 | |
65f38f15 AM |
3250 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3251 | ||
3252 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3253 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3254 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3255 | |
721956f4 AM |
3256 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3257 | ((struct ppc_stub_hash_entry *) \ | |
3258 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3259 | ||
3260 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3261 | ((struct ppc_branch_hash_entry *) \ | |
3262 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3263 | ||
3264 | /* Create an entry in the stub hash table. */ | |
3265 | ||
3266 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3267 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3268 | struct bfd_hash_table *table, | |
3269 | const char *string) | |
721956f4 AM |
3270 | { |
3271 | /* Allocate the structure if it has not already been allocated by a | |
3272 | subclass. */ | |
3273 | if (entry == NULL) | |
3274 | { | |
3275 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3276 | if (entry == NULL) | |
3277 | return entry; | |
3278 | } | |
3279 | ||
3280 | /* Call the allocation method of the superclass. */ | |
3281 | entry = bfd_hash_newfunc (entry, table, string); | |
3282 | if (entry != NULL) | |
3283 | { | |
3284 | struct ppc_stub_hash_entry *eh; | |
3285 | ||
3286 | /* Initialize the local fields. */ | |
3287 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3288 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3289 | eh->group = NULL; |
721956f4 AM |
3290 | eh->stub_offset = 0; |
3291 | eh->target_value = 0; | |
3292 | eh->target_section = NULL; | |
721956f4 | 3293 | eh->h = NULL; |
6911b7dc | 3294 | eh->plt_ent = NULL; |
6911b7dc | 3295 | eh->other = 0; |
721956f4 AM |
3296 | } |
3297 | ||
3298 | return entry; | |
3299 | } | |
3300 | ||
3301 | /* Create an entry in the branch hash table. */ | |
3302 | ||
3303 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3304 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3305 | struct bfd_hash_table *table, | |
3306 | const char *string) | |
721956f4 AM |
3307 | { |
3308 | /* Allocate the structure if it has not already been allocated by a | |
3309 | subclass. */ | |
3310 | if (entry == NULL) | |
3311 | { | |
3312 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3313 | if (entry == NULL) | |
3314 | return entry; | |
3315 | } | |
3316 | ||
3317 | /* Call the allocation method of the superclass. */ | |
3318 | entry = bfd_hash_newfunc (entry, table, string); | |
3319 | if (entry != NULL) | |
3320 | { | |
3321 | struct ppc_branch_hash_entry *eh; | |
3322 | ||
3323 | /* Initialize the local fields. */ | |
3324 | eh = (struct ppc_branch_hash_entry *) entry; | |
3325 | eh->offset = 0; | |
3326 | eh->iter = 0; | |
3327 | } | |
3328 | ||
3329 | return entry; | |
3330 | } | |
3331 | ||
65f38f15 AM |
3332 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3333 | ||
3334 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3335 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3336 | struct bfd_hash_table *table, | |
3337 | const char *string) | |
65f38f15 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_link_hash_entry)); | |
3344 | if (entry == NULL) | |
3345 | return entry; | |
3346 | } | |
3347 | ||
3348 | /* Call the allocation method of the superclass. */ | |
3349 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3350 | if (entry != NULL) | |
3351 | { | |
3352 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3353 | ||
b3fac117 | 3354 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3355 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3356 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3357 | ||
3358 | /* When making function calls, old ABI code references function entry | |
3359 | points (dot symbols), while new ABI code references the function | |
3360 | descriptor symbol. We need to make any combination of reference and | |
3361 | definition work together, without breaking archive linking. | |
3362 | ||
3363 | For a defined function "foo" and an undefined call to "bar": | |
3364 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3365 | "bar" too). | |
3366 | A new object defines "foo" and references "bar". | |
3367 | ||
3368 | A new object thus has no problem with its undefined symbols being | |
3369 | satisfied by definitions in an old object. On the other hand, the | |
3370 | old object won't have ".bar" satisfied by a new object. | |
3371 | ||
3372 | Keep a list of newly added dot-symbols. */ | |
3373 | ||
3374 | if (string[0] == '.') | |
3375 | { | |
3376 | struct ppc_link_hash_table *htab; | |
3377 | ||
3378 | htab = (struct ppc_link_hash_table *) table; | |
3379 | eh->u.next_dot_sym = htab->dot_syms; | |
3380 | htab->dot_syms = eh; | |
3381 | } | |
65f38f15 AM |
3382 | } |
3383 | ||
3384 | return entry; | |
3385 | } | |
3386 | ||
2cdcc330 AM |
3387 | struct tocsave_entry |
3388 | { | |
3b421ab3 AM |
3389 | asection *sec; |
3390 | bfd_vma offset; | |
3391 | }; | |
3392 | ||
3393 | static hashval_t | |
3394 | tocsave_htab_hash (const void *p) | |
3395 | { | |
3396 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3397 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3398 | } |
3399 | ||
3400 | static int | |
3401 | tocsave_htab_eq (const void *p1, const void *p2) | |
3402 | { | |
3403 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3404 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3405 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3406 | } | |
3407 | ||
68faa637 AM |
3408 | /* Destroy a ppc64 ELF linker hash table. */ |
3409 | ||
3410 | static void | |
d495ab0d | 3411 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3412 | { |
d495ab0d | 3413 | struct ppc_link_hash_table *htab; |
68faa637 | 3414 | |
d495ab0d | 3415 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3416 | if (htab->tocsave_htab) |
3417 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3418 | bfd_hash_table_free (&htab->branch_hash_table); |
3419 | bfd_hash_table_free (&htab->stub_hash_table); | |
3420 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3421 | } |
3422 | ||
65f38f15 AM |
3423 | /* Create a ppc64 ELF linker hash table. */ |
3424 | ||
3425 | static struct bfd_link_hash_table * | |
4ce794b7 | 3426 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3427 | { |
3428 | struct ppc_link_hash_table *htab; | |
3429 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3430 | ||
4ce794b7 | 3431 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3432 | if (htab == NULL) |
3433 | return NULL; | |
3434 | ||
66eb6687 | 3435 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3436 | sizeof (struct ppc_link_hash_entry), |
3437 | PPC64_ELF_DATA)) | |
65f38f15 | 3438 | { |
e2d34d7d | 3439 | free (htab); |
65f38f15 AM |
3440 | return NULL; |
3441 | } | |
3442 | ||
721956f4 | 3443 | /* Init the stub hash table too. */ |
66eb6687 AM |
3444 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3445 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3446 | { |
d495ab0d | 3447 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3448 | return NULL; |
3449 | } | |
721956f4 AM |
3450 | |
3451 | /* And the branch hash table. */ | |
66eb6687 AM |
3452 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3453 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3454 | { |
3455 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3456 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3457 | return NULL; |
3458 | } | |
721956f4 | 3459 | |
3b421ab3 AM |
3460 | htab->tocsave_htab = htab_try_create (1024, |
3461 | tocsave_htab_hash, | |
3462 | tocsave_htab_eq, | |
3463 | NULL); | |
3464 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3465 | { |
d495ab0d | 3466 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3467 | return NULL; |
3468 | } | |
d495ab0d | 3469 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3470 | |
3254fd24 AM |
3471 | /* Initializing two fields of the union is just cosmetic. We really |
3472 | only care about glist, but when compiled on a 32-bit host the | |
3473 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3474 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3475 | htab->elf.init_got_refcount.refcount = 0; |
3476 | htab->elf.init_got_refcount.glist = NULL; | |
3477 | htab->elf.init_plt_refcount.refcount = 0; | |
3478 | htab->elf.init_plt_refcount.glist = NULL; | |
3479 | htab->elf.init_got_offset.offset = 0; | |
3480 | htab->elf.init_got_offset.glist = NULL; | |
3481 | htab->elf.init_plt_offset.offset = 0; | |
3482 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3483 | |
65f38f15 AM |
3484 | return &htab->elf.root; |
3485 | } | |
3486 | ||
bfeb4a28 AM |
3487 | /* Create sections for linker generated code. */ |
3488 | ||
3489 | static bfd_boolean | |
3490 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3491 | { | |
3492 | struct ppc_link_hash_table *htab; | |
3493 | flagword flags; | |
3494 | ||
3495 | htab = ppc_hash_table (info); | |
3496 | ||
bfeb4a28 AM |
3497 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3498 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3499 | if (htab->params->save_restore_funcs) |
3500 | { | |
3501 | /* Create .sfpr for code to save and restore fp regs. */ | |
3502 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3503 | flags); | |
3504 | if (htab->sfpr == NULL | |
fd361982 | 3505 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
b32547cd AM |
3506 | return FALSE; |
3507 | } | |
3508 | ||
3509 | if (bfd_link_relocatable (info)) | |
3510 | return TRUE; | |
bfeb4a28 AM |
3511 | |
3512 | /* Create .glink for lazy dynamic linking support. */ | |
3513 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3514 | flags); | |
3515 | if (htab->glink == NULL | |
fd361982 | 3516 | || !bfd_set_section_alignment (htab->glink, 3)) |
bfeb4a28 AM |
3517 | return FALSE; |
3518 | ||
9e390558 AM |
3519 | /* The part of .glink used by global entry stubs, separate so that |
3520 | it can be aligned appropriately without affecting htab->glink. */ | |
3521 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3522 | flags); | |
3523 | if (htab->global_entry == NULL | |
fd361982 | 3524 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
9e390558 AM |
3525 | return FALSE; |
3526 | ||
bfeb4a28 AM |
3527 | if (!info->no_ld_generated_unwind_info) |
3528 | { | |
3529 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3530 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3531 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3532 | ".eh_frame", | |
3533 | flags); | |
3534 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3535 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
bfeb4a28 AM |
3536 | return FALSE; |
3537 | } | |
3538 | ||
3539 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3540 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3541 | if (htab->elf.iplt == NULL | |
fd361982 | 3542 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
bfeb4a28 AM |
3543 | return FALSE; |
3544 | ||
3545 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3546 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3547 | htab->elf.irelplt |
3548 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3549 | if (htab->elf.irelplt == NULL | |
fd361982 | 3550 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3551 | return FALSE; |
3552 | ||
3553 | /* Create branch lookup table for plt_branch stubs. */ | |
3554 | flags = (SEC_ALLOC | SEC_LOAD | |
3555 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3556 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3557 | flags); | |
3558 | if (htab->brlt == NULL | |
fd361982 | 3559 | || !bfd_set_section_alignment (htab->brlt, 3)) |
bfeb4a28 AM |
3560 | return FALSE; |
3561 | ||
2d7ad24e AM |
3562 | /* Local plt entries, put in .branch_lt but a separate section for |
3563 | convenience. */ | |
3564 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3565 | flags); | |
3566 | if (htab->pltlocal == NULL | |
fd361982 | 3567 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
2d7ad24e AM |
3568 | return FALSE; |
3569 | ||
0e1862bb | 3570 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3571 | return TRUE; |
3572 | ||
3573 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3574 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3575 | htab->relbrlt |
3576 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3577 | if (htab->relbrlt == NULL |
fd361982 | 3578 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
bfeb4a28 AM |
3579 | return FALSE; |
3580 | ||
2d7ad24e AM |
3581 | htab->relpltlocal |
3582 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3583 | if (htab->relpltlocal == NULL | |
fd361982 | 3584 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
2d7ad24e AM |
3585 | return FALSE; |
3586 | ||
bfeb4a28 AM |
3587 | return TRUE; |
3588 | } | |
3589 | ||
e717da7e AM |
3590 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3591 | ||
bfeb4a28 | 3592 | bfd_boolean |
e7d1c40c AM |
3593 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3594 | struct ppc64_elf_params *params) | |
e717da7e AM |
3595 | { |
3596 | struct ppc_link_hash_table *htab; | |
3597 | ||
e7d1c40c | 3598 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3599 | |
3600 | /* Always hook our dynamic sections into the first bfd, which is the | |
3601 | linker created stub bfd. This ensures that the GOT header is at | |
3602 | the start of the output TOC section. */ | |
3603 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3604 | htab->elf.dynobj = params->stub_bfd; |
3605 | htab->params = params; | |
bfeb4a28 | 3606 | |
bfeb4a28 | 3607 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3608 | } |
3609 | ||
721956f4 AM |
3610 | /* Build a name for an entry in the stub hash table. */ |
3611 | ||
3612 | static char * | |
4ce794b7 AM |
3613 | ppc_stub_name (const asection *input_section, |
3614 | const asection *sym_sec, | |
3615 | const struct ppc_link_hash_entry *h, | |
3616 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3617 | { |
3618 | char *stub_name; | |
bcaa2f82 | 3619 | ssize_t len; |
721956f4 AM |
3620 | |
3621 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3622 | offsets from a sym as a branch target? In fact, we could | |
3623 | probably assume the addend is always zero. */ | |
3624 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3625 | ||
3626 | if (h) | |
3627 | { | |
3628 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3629 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3630 | if (stub_name == NULL) |
3631 | return stub_name; | |
3632 | ||
bcaa2f82 AM |
3633 | len = sprintf (stub_name, "%08x.%s+%x", |
3634 | input_section->id & 0xffffffff, | |
3635 | h->elf.root.root.string, | |
3636 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3637 | } |
3638 | else | |
3639 | { | |
ad8e1ba5 | 3640 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3641 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3642 | if (stub_name == NULL) |
3643 | return stub_name; | |
3644 | ||
bcaa2f82 AM |
3645 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3646 | input_section->id & 0xffffffff, | |
3647 | sym_sec->id & 0xffffffff, | |
3648 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3649 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3650 | } |
bcaa2f82 | 3651 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3652 | stub_name[len - 2] = 0; |
721956f4 AM |
3653 | return stub_name; |
3654 | } | |
3655 | ||
3656 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3657 | creating the stub name takes a bit of time. */ | |
3658 | ||
3659 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3660 | ppc_get_stub_entry (const asection *input_section, |
3661 | const asection *sym_sec, | |
039b3fef | 3662 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3663 | const Elf_Internal_Rela *rel, |
3664 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3665 | { |
3666 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3667 | struct map_stub *group; |
721956f4 AM |
3668 | |
3669 | /* If this input section is part of a group of sections sharing one | |
3670 | stub section, then use the id of the first section in the group. | |
3671 | Stub names need to include a section id, as there may well be | |
3672 | more than one stub used to reach say, printf, and we need to | |
3673 | distinguish between them. */ | |
6f20ed8a | 3674 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3675 | if (group == NULL) |
3676 | return NULL; | |
721956f4 | 3677 | |
b3fac117 AM |
3678 | if (h != NULL && h->u.stub_cache != NULL |
3679 | && h->u.stub_cache->h == h | |
6f20ed8a | 3680 | && h->u.stub_cache->group == group) |
721956f4 | 3681 | { |
b3fac117 | 3682 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3683 | } |
3684 | else | |
3685 | { | |
3686 | char *stub_name; | |
3687 | ||
6f20ed8a | 3688 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3689 | if (stub_name == NULL) |
3690 | return NULL; | |
3691 | ||
3692 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3693 | stub_name, FALSE, FALSE); |
721956f4 | 3694 | if (h != NULL) |
b3fac117 | 3695 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3696 | |
3697 | free (stub_name); | |
3698 | } | |
3699 | ||
3700 | return stub_entry; | |
3701 | } | |
3702 | ||
3703 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3704 | stub entry are initialised. */ | |
3705 | ||
3706 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3707 | ppc_add_stub (const char *stub_name, |
3708 | asection *section, | |
25f53a85 | 3709 | struct bfd_link_info *info) |
721956f4 | 3710 | { |
25f53a85 | 3711 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3712 | struct map_stub *group; |
721956f4 AM |
3713 | asection *link_sec; |
3714 | asection *stub_sec; | |
3715 | struct ppc_stub_hash_entry *stub_entry; | |
3716 | ||
6f20ed8a AM |
3717 | group = htab->sec_info[section->id].u.group; |
3718 | link_sec = group->link_sec; | |
3719 | stub_sec = group->stub_sec; | |
721956f4 AM |
3720 | if (stub_sec == NULL) |
3721 | { | |
6f20ed8a AM |
3722 | size_t namelen; |
3723 | bfd_size_type len; | |
3724 | char *s_name; | |
721956f4 | 3725 | |
6f20ed8a AM |
3726 | namelen = strlen (link_sec->name); |
3727 | len = namelen + sizeof (STUB_SUFFIX); | |
3728 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3729 | if (s_name == NULL) | |
3730 | return NULL; | |
721956f4 | 3731 | |
6f20ed8a AM |
3732 | memcpy (s_name, link_sec->name, namelen); |
3733 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3734 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3735 | if (stub_sec == NULL) | |
3736 | return NULL; | |
3737 | group->stub_sec = stub_sec; | |
721956f4 AM |
3738 | } |
3739 | ||
3740 | /* Enter this entry into the linker stub hash table. */ | |
3741 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3742 | TRUE, FALSE); |
721956f4 AM |
3743 | if (stub_entry == NULL) |
3744 | { | |
695344c0 | 3745 | /* xgettext:c-format */ |
cf97bcb0 AM |
3746 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3747 | section->owner, stub_name); | |
721956f4 AM |
3748 | return NULL; |
3749 | } | |
3750 | ||
6f20ed8a | 3751 | stub_entry->group = group; |
721956f4 | 3752 | stub_entry->stub_offset = 0; |
721956f4 AM |
3753 | return stub_entry; |
3754 | } | |
3755 | ||
e717da7e AM |
3756 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3757 | not already done. */ | |
65f38f15 | 3758 | |
b34976b6 | 3759 | static bfd_boolean |
e717da7e | 3760 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3761 | { |
e717da7e AM |
3762 | asection *got, *relgot; |
3763 | flagword flags; | |
3764 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3765 | |
0c8d6e5c | 3766 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3767 | return FALSE; |
4dfe6ac6 NC |
3768 | if (htab == NULL) |
3769 | return FALSE; | |
0ffa91dd | 3770 | |
33e44f2e AM |
3771 | if (!htab->elf.sgot |
3772 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3773 | return FALSE; | |
e717da7e AM |
3774 | |
3775 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3776 | | SEC_LINKER_CREATED); | |
3777 | ||
c456f082 | 3778 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3779 | if (!got |
fd361982 | 3780 | || !bfd_set_section_alignment (got, 3)) |
e717da7e | 3781 | return FALSE; |
65f38f15 | 3782 | |
c456f082 AM |
3783 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3784 | flags | SEC_READONLY); | |
e717da7e | 3785 | if (!relgot |
fd361982 | 3786 | || !bfd_set_section_alignment (relgot, 3)) |
b34976b6 | 3787 | return FALSE; |
e717da7e AM |
3788 | |
3789 | ppc64_elf_tdata (abfd)->got = got; | |
3790 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3791 | return TRUE; |
65f38f15 | 3792 | } |
5bd4f169 | 3793 | |
b31867b6 AM |
3794 | /* Follow indirect and warning symbol links. */ |
3795 | ||
3796 | static inline struct bfd_link_hash_entry * | |
3797 | follow_link (struct bfd_link_hash_entry *h) | |
3798 | { | |
3799 | while (h->type == bfd_link_hash_indirect | |
3800 | || h->type == bfd_link_hash_warning) | |
3801 | h = h->u.i.link; | |
3802 | return h; | |
3803 | } | |
3804 | ||
3805 | static inline struct elf_link_hash_entry * | |
3806 | elf_follow_link (struct elf_link_hash_entry *h) | |
3807 | { | |
3808 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3809 | } | |
3810 | ||
3811 | static inline struct ppc_link_hash_entry * | |
3812 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3813 | { | |
3814 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
3815 | } | |
3816 | ||
40d16e0b AM |
3817 | /* Merge PLT info on FROM with that on TO. */ |
3818 | ||
3819 | static void | |
3820 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3821 | struct ppc_link_hash_entry *to) | |
3822 | { | |
3823 | if (from->elf.plt.plist != NULL) | |
3824 | { | |
3825 | if (to->elf.plt.plist != NULL) | |
3826 | { | |
3827 | struct plt_entry **entp; | |
3828 | struct plt_entry *ent; | |
3829 | ||
3830 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3831 | { | |
3832 | struct plt_entry *dent; | |
3833 | ||
3834 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3835 | if (dent->addend == ent->addend) | |
3836 | { | |
3837 | dent->plt.refcount += ent->plt.refcount; | |
3838 | *entp = ent->next; | |
3839 | break; | |
3840 | } | |
3841 | if (dent == NULL) | |
3842 | entp = &ent->next; | |
3843 | } | |
3844 | *entp = to->elf.plt.plist; | |
3845 | } | |
3846 | ||
3847 | to->elf.plt.plist = from->elf.plt.plist; | |
3848 | from->elf.plt.plist = NULL; | |
3849 | } | |
3850 | } | |
3851 | ||
65f38f15 AM |
3852 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3853 | ||
3854 | static void | |
fcfa13d2 AM |
3855 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3856 | struct elf_link_hash_entry *dir, | |
3857 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3858 | { |
3859 | struct ppc_link_hash_entry *edir, *eind; | |
3860 | ||
3861 | edir = (struct ppc_link_hash_entry *) dir; | |
3862 | eind = (struct ppc_link_hash_entry *) ind; | |
3863 | ||
c79d6685 AM |
3864 | edir->is_func |= eind->is_func; |
3865 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3866 | edir->tls_mask |= eind->tls_mask; | |
3867 | if (eind->oh != NULL) | |
3868 | edir->oh = ppc_follow_link (eind->oh); | |
3869 | ||
474436e6 | 3870 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3871 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3872 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3873 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3874 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3875 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3876 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3877 | |
d311bc8b AM |
3878 | /* If we were called to copy over info for a weak sym, don't copy |
3879 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3880 | in order to simplify readonly_dynrelocs and save a field in the | |
3881 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3882 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3883 | are then tested. */ |
d311bc8b | 3884 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3885 | return; |
d311bc8b | 3886 | |
411e1bfb | 3887 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3888 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3889 | { |
bbd7ec4a AM |
3890 | if (edir->dyn_relocs != NULL) |
3891 | { | |
6061a67d AM |
3892 | struct elf_dyn_relocs **pp; |
3893 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3894 | |
fcfa13d2 | 3895 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3896 | list. Merge any entries against the same section. */ |
3897 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3898 | { | |
6061a67d | 3899 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
3900 | |
3901 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3902 | if (q->sec == p->sec) | |
3903 | { | |
3904 | q->pc_count += p->pc_count; | |
3905 | q->count += p->count; | |
3906 | *pp = p->next; | |
3907 | break; | |
3908 | } | |
3909 | if (q == NULL) | |
3910 | pp = &p->next; | |
3911 | } | |
3912 | *pp = edir->dyn_relocs; | |
3913 | } | |
3914 | ||
65f38f15 AM |
3915 | edir->dyn_relocs = eind->dyn_relocs; |
3916 | eind->dyn_relocs = NULL; | |
3917 | } | |
65f38f15 | 3918 | |
81848ca0 AM |
3919 | /* Copy over got entries that we may have already seen to the |
3920 | symbol which just became indirect. */ | |
411e1bfb AM |
3921 | if (eind->elf.got.glist != NULL) |
3922 | { | |
3923 | if (edir->elf.got.glist != NULL) | |
3924 | { | |
3925 | struct got_entry **entp; | |
3926 | struct got_entry *ent; | |
3927 | ||
3928 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3929 | { | |
3930 | struct got_entry *dent; | |
3931 | ||
3932 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3933 | if (dent->addend == ent->addend | |
e717da7e | 3934 | && dent->owner == ent->owner |
411e1bfb AM |
3935 | && dent->tls_type == ent->tls_type) |
3936 | { | |
3937 | dent->got.refcount += ent->got.refcount; | |
3938 | *entp = ent->next; | |
3939 | break; | |
3940 | } | |
3941 | if (dent == NULL) | |
3942 | entp = &ent->next; | |
3943 | } | |
3944 | *entp = edir->elf.got.glist; | |
3945 | } | |
3946 | ||
3947 | edir->elf.got.glist = eind->elf.got.glist; | |
3948 | eind->elf.got.glist = NULL; | |
3949 | } | |
3950 | ||
3951 | /* And plt entries. */ | |
40d16e0b | 3952 | move_plt_plist (eind, edir); |
411e1bfb | 3953 | |
fcfa13d2 | 3954 | if (eind->elf.dynindx != -1) |
411e1bfb | 3955 | { |
fcfa13d2 AM |
3956 | if (edir->elf.dynindx != -1) |
3957 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3958 | edir->elf.dynstr_index); | |
411e1bfb AM |
3959 | edir->elf.dynindx = eind->elf.dynindx; |
3960 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3961 | eind->elf.dynindx = -1; | |
3962 | eind->elf.dynstr_index = 0; | |
3963 | } | |
411e1bfb AM |
3964 | } |
3965 | ||
8387904d AM |
3966 | /* Find the function descriptor hash entry from the given function code |
3967 | hash entry FH. Link the entries via their OH fields. */ | |
3968 | ||
3969 | static struct ppc_link_hash_entry * | |
b31867b6 | 3970 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
3971 | { |
3972 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3973 | ||
3974 | if (fdh == NULL) | |
3975 | { | |
3976 | const char *fd_name = fh->elf.root.root.string + 1; | |
3977 | ||
3978 | fdh = (struct ppc_link_hash_entry *) | |
3979 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
3980 | if (fdh == NULL) |
3981 | return fdh; | |
3982 | ||
3983 | fdh->is_func_descriptor = 1; | |
3984 | fdh->oh = fh; | |
3985 | fh->is_func = 1; | |
3986 | fh->oh = fdh; | |
8387904d AM |
3987 | } |
3988 | ||
8c5b4e52 AM |
3989 | fdh = ppc_follow_link (fdh); |
3990 | fdh->is_func_descriptor = 1; | |
3991 | fdh->oh = fh; | |
3992 | return fdh; | |
8387904d AM |
3993 | } |
3994 | ||
8c5b4e52 | 3995 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
3996 | |
3997 | static struct ppc_link_hash_entry * | |
3998 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 3999 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4000 | { |
8c5b4e52 AM |
4001 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4002 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4003 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4004 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4005 | ? BSF_WEAK | |
4006 | : BSF_GLOBAL); | |
4007 | ||
4008 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4009 | fh->elf.root.root.string + 1, | |
4010 | flags, bfd_und_section_ptr, 0, | |
4011 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
4012 | return NULL; |
4013 | ||
4014 | fdh = (struct ppc_link_hash_entry *) bh; | |
4015 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4016 | fdh->fake = 1; |
4017 | fdh->is_func_descriptor = 1; | |
4018 | fdh->oh = fh; | |
4019 | fh->is_func = 1; | |
4020 | fh->oh = fdh; | |
bb700d78 AM |
4021 | return fdh; |
4022 | } | |
4023 | ||
8387904d AM |
4024 | /* Fix function descriptor symbols defined in .opd sections to be |
4025 | function type. */ | |
555cd476 AM |
4026 | |
4027 | static bfd_boolean | |
c16153ae | 4028 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4029 | struct bfd_link_info *info, |
555cd476 | 4030 | Elf_Internal_Sym *isym, |
6911b7dc | 4031 | const char **name, |
555cd476 AM |
4032 | flagword *flags ATTRIBUTE_UNUSED, |
4033 | asection **sec, | |
b53dfeb2 | 4034 | bfd_vma *value) |
555cd476 | 4035 | { |
b53dfeb2 | 4036 | if (*sec != NULL |
f1885d1e | 4037 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4038 | { |
4039 | asection *code_sec; | |
4040 | ||
4041 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4042 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4043 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4044 | ||
4045 | /* If the symbol is a function defined in .opd, and the function | |
4046 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4047 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4048 | && (*sec)->reloc_count != 0 |
4049 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4050 | FALSE) != (bfd_vma) -1 | |
4051 | && discarded_section (code_sec)) | |
4052 | { | |
4053 | *sec = bfd_und_section_ptr; | |
4054 | isym->st_shndx = SHN_UNDEF; | |
4055 | } | |
4056 | } | |
dbd1e97e AM |
4057 | else if (*sec != NULL |
4058 | && strcmp ((*sec)->name, ".toc") == 0 | |
4059 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4060 | { | |
4061 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4062 | if (htab != NULL) | |
4063 | htab->params->object_in_toc = 1; | |
4064 | } | |
433817dd | 4065 | |
6911b7dc AM |
4066 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4067 | { | |
4068 | if (abiversion (ibfd) == 0) | |
4069 | set_abiversion (ibfd, 2); | |
4070 | else if (abiversion (ibfd) == 1) | |
4071 | { | |
cf97bcb0 AM |
4072 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4073 | " for ABI version 1"), *name); | |
6911b7dc AM |
4074 | bfd_set_error (bfd_error_bad_value); |
4075 | return FALSE; | |
4076 | } | |
4077 | } | |
4078 | ||
555cd476 AM |
4079 | return TRUE; |
4080 | } | |
4081 | ||
6911b7dc AM |
4082 | /* Merge non-visibility st_other attributes: local entry point. */ |
4083 | ||
4084 | static void | |
4085 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4086 | const Elf_Internal_Sym *isym, | |
4087 | bfd_boolean definition, | |
4088 | bfd_boolean dynamic) | |
4089 | { | |
f378ab09 | 4090 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
4091 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
4092 | | ELF_ST_VISIBILITY (h->other)); | |
4093 | } | |
4094 | ||
8c5b4e52 AM |
4095 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4096 | we now have a real symbol. */ | |
4097 | ||
4098 | static bfd_boolean | |
4099 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4100 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4101 | asection **psec ATTRIBUTE_UNUSED, |
4102 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4103 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4104 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4105 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4106 | { | |
4107 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
4108 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4109 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
4110 | return TRUE; |
4111 | } | |
4112 | ||
8387904d | 4113 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4114 | inclusion of a new ABI object archive that defines "bar". |
4115 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4116 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4117 | |
4118 | static struct elf_link_hash_entry * | |
4119 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4120 | struct bfd_link_info *info, | |
4121 | const char *name) | |
4122 | { | |
4123 | struct elf_link_hash_entry *h; | |
4124 | char *dot_name; | |
4125 | size_t len; | |
4126 | ||
4127 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4128 | if (h != NULL |
4129 | /* Don't return this sym if it is a fake function descriptor | |
4130 | created by add_symbol_adjust. */ | |
8c5b4e52 | 4131 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
4132 | return h; |
4133 | ||
4134 | if (name[0] == '.') | |
4135 | return h; | |
4136 | ||
4137 | len = strlen (name); | |
4138 | dot_name = bfd_alloc (abfd, len + 2); | |
4139 | if (dot_name == NULL) | |
e99955cd | 4140 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4141 | dot_name[0] = '.'; |
4142 | memcpy (dot_name + 1, name, len + 1); | |
4143 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4144 | bfd_release (abfd, dot_name); | |
4145 | return h; | |
4146 | } | |
4147 | ||
4148 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4149 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4150 | are made weak. This stops later archive searches from including an | |
4151 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4152 | prevents the linker complaining about undefined symbols. |
4153 | We also check and correct mismatched symbol visibility here. The | |
4154 | most restrictive visibility of the function descriptor and the | |
4155 | function entry symbol is used. */ | |
8387904d AM |
4156 | |
4157 | static bfd_boolean | |
b3fac117 | 4158 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4159 | { |
8387904d AM |
4160 | struct ppc_link_hash_table *htab; |
4161 | struct ppc_link_hash_entry *fdh; | |
4162 | ||
b3fac117 AM |
4163 | if (eh->elf.root.type == bfd_link_hash_warning) |
4164 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4165 | |
8400d40d AM |
4166 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4167 | return TRUE; | |
4168 | ||
b3fac117 AM |
4169 | if (eh->elf.root.root.string[0] != '.') |
4170 | abort (); | |
8387904d | 4171 | |
b3fac117 | 4172 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4173 | if (htab == NULL) |
4174 | return FALSE; | |
4175 | ||
b31867b6 | 4176 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4177 | if (fdh == NULL |
4178 | && !bfd_link_relocatable (info) | |
4179 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4180 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4181 | && eh->elf.ref_regular) | |
4182 | { | |
4183 | /* Make an undefined function descriptor sym, in order to | |
4184 | pull in an --as-needed shared lib. Archives are handled | |
4185 | elsewhere. */ | |
4186 | fdh = make_fdh (info, eh); | |
4187 | if (fdh == NULL) | |
4188 | return FALSE; | |
bb700d78 | 4189 | } |
8c5b4e52 AM |
4190 | |
4191 | if (fdh != NULL) | |
8387904d | 4192 | { |
35b0ce59 AM |
4193 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4194 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4195 | |
4196 | /* Make both descriptor and entry symbol have the most | |
4197 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4198 | if (entry_vis < descr_vis) |
4199 | fdh->elf.other += entry_vis - descr_vis; | |
4200 | else if (entry_vis > descr_vis) | |
4201 | eh->elf.other += descr_vis - entry_vis; | |
4202 | ||
8c5b4e52 AM |
4203 | /* Propagate reference flags from entry symbol to function |
4204 | descriptor symbol. */ | |
bc4e12de | 4205 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4206 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4207 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4208 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4209 | ||
4210 | if (!fdh->elf.forced_local | |
4211 | && fdh->elf.dynindx == -1 | |
4212 | && fdh->elf.versioned != versioned_hidden | |
4213 | && (bfd_link_dll (info) | |
4214 | || fdh->elf.def_dynamic | |
4215 | || fdh->elf.ref_dynamic) | |
4216 | && (eh->elf.ref_regular | |
4217 | || eh->elf.def_regular)) | |
4218 | { | |
2cdcc330 | 4219 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4220 | return FALSE; |
35b0ce59 | 4221 | } |
8387904d | 4222 | } |
99877b66 | 4223 | |
8387904d AM |
4224 | return TRUE; |
4225 | } | |
4226 | ||
f6c7c3e8 AM |
4227 | /* Set up opd section info and abiversion for IBFD, and process list |
4228 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4229 | |
8387904d | 4230 | static bfd_boolean |
f6c7c3e8 | 4231 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4232 | { |
99877b66 | 4233 | struct ppc_link_hash_table *htab; |
b3fac117 | 4234 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4235 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4236 | |
459609d6 | 4237 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4238 | { |
b9399fcf AM |
4239 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4240 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4241 | ||
459609d6 AM |
4242 | if (abiversion (ibfd) == 0) |
4243 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4244 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4245 | { |
695344c0 | 4246 | /* xgettext:c-format */ |
cf97bcb0 AM |
4247 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4248 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4249 | bfd_set_error (bfd_error_bad_value); |
4250 | return FALSE; | |
f6c7c3e8 | 4251 | } |
b9399fcf | 4252 | } |
f6c7c3e8 | 4253 | |
b9399fcf AM |
4254 | if (is_ppc64_elf (info->output_bfd)) |
4255 | { | |
4256 | /* For input files without an explicit abiversion in e_flags | |
4257 | we should have flagged any with symbol st_other bits set | |
4258 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4259 | Set the output abiversion if not yet set, and for any input | |
4260 | still ambiguous, take its abiversion from the output. | |
4261 | Differences in ABI are reported later. */ | |
4262 | if (abiversion (info->output_bfd) == 0) | |
4263 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4264 | else if (abiversion (ibfd) == 0) | |
4265 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4266 | } |
4267 | ||
459609d6 AM |
4268 | htab = ppc_hash_table (info); |
4269 | if (htab == NULL) | |
b9399fcf | 4270 | return TRUE; |
459609d6 | 4271 | |
b9399fcf AM |
4272 | if (opd != NULL && opd->size != 0 |
4273 | && (ibfd->flags & DYNAMIC) == 0 | |
4274 | && (opd->flags & SEC_RELOC) != 0 | |
4275 | && opd->reloc_count != 0 | |
4276 | && !bfd_is_abs_section (opd->output_section) | |
4277 | && info->gc_sections) | |
4278 | { | |
4279 | /* Garbage collection needs some extra help with .opd sections. | |
4280 | We don't want to necessarily keep everything referenced by | |
4281 | relocs in .opd, as that would keep all functions. Instead, | |
4282 | if we reference an .opd symbol (a function descriptor), we | |
4283 | want to keep the function code symbol's section. This is | |
4284 | easy for global symbols, but for local syms we need to keep | |
4285 | information about the associated function section. */ | |
4286 | bfd_size_type amt; | |
4287 | asection **opd_sym_map; | |
4288 | Elf_Internal_Shdr *symtab_hdr; | |
4289 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4290 | ||
4291 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4292 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4293 | if (opd_sym_map == NULL) | |
4294 | return FALSE; | |
4295 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4296 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4297 | info->keep_memory); | |
4298 | if (relocs == NULL) | |
4299 | return FALSE; | |
4300 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4301 | rel_end = relocs + opd->reloc_count - 1; | |
4302 | for (rel = relocs; rel < rel_end; rel++) | |
4303 | { | |
4304 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4305 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4306 | ||
4307 | if (r_type == R_PPC64_ADDR64 | |
4308 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4309 | && r_symndx < symtab_hdr->sh_info) | |
4310 | { | |
4311 | Elf_Internal_Sym *isym; | |
4312 | asection *s; | |
4313 | ||
4314 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
4315 | if (isym == NULL) | |
4316 | { | |
4317 | if (elf_section_data (opd)->relocs != relocs) | |
4318 | free (relocs); | |
4319 | return FALSE; | |
4320 | } | |
4321 | ||
4322 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4323 | if (s != NULL && s != opd) | |
4324 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4325 | } | |
4326 | } | |
4327 | if (elf_section_data (opd)->relocs != relocs) | |
4328 | free (relocs); | |
4329 | } | |
459609d6 AM |
4330 | |
4331 | p = &htab->dot_syms; | |
4332 | while ((eh = *p) != NULL) | |
4333 | { | |
4334 | *p = NULL; | |
4335 | if (&eh->elf == htab->elf.hgot) | |
4336 | ; | |
4337 | else if (htab->elf.hgot == NULL | |
4338 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4339 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4340 | else if (abiversion (ibfd) <= 1) |
4341 | { | |
4342 | htab->need_func_desc_adj = 1; | |
4343 | if (!add_symbol_adjust (eh, info)) | |
4344 | return FALSE; | |
4345 | } | |
459609d6 AM |
4346 | p = &eh->u.next_dot_sym; |
4347 | } | |
b3fac117 | 4348 | return TRUE; |
8387904d AM |
4349 | } |
4350 | ||
97fed1c9 JJ |
4351 | /* Undo hash table changes when an --as-needed input file is determined |
4352 | not to be needed. */ | |
4353 | ||
4354 | static bfd_boolean | |
e5034e59 AM |
4355 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4356 | struct bfd_link_info *info, | |
4357 | enum notice_asneeded_action act) | |
97fed1c9 | 4358 | { |
e5034e59 AM |
4359 | if (act == notice_not_needed) |
4360 | { | |
4361 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4362 | |
e5034e59 AM |
4363 | if (htab == NULL) |
4364 | return FALSE; | |
4dfe6ac6 | 4365 | |
e5034e59 AM |
4366 | htab->dot_syms = NULL; |
4367 | } | |
4368 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4369 | } |
4370 | ||
aa374f67 AM |
4371 | /* If --just-symbols against a final linked binary, then assume we need |
4372 | toc adjusting stubs when calling functions defined there. */ | |
4373 | ||
4374 | static void | |
4375 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4376 | { | |
4377 | if ((sec->flags & SEC_CODE) != 0 | |
4378 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4379 | && is_ppc64_elf (sec->owner)) | |
4380 | { | |
2c3f079f AM |
4381 | if (abiversion (sec->owner) >= 2 |
4382 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4383 | sec->has_toc_reloc = 1; |
4384 | } | |
4385 | _bfd_elf_link_just_syms (sec, info); | |
4386 | } | |
4387 | ||
e054468f | 4388 | static struct plt_entry ** |
4ce794b7 AM |
4389 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4390 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4391 | { |
4392 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4393 | struct plt_entry **local_plt; |
f961d9dd | 4394 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4395 | |
4396 | if (local_got_ents == NULL) | |
4397 | { | |
4398 | bfd_size_type size = symtab_hdr->sh_info; | |
4399 | ||
e054468f AM |
4400 | size *= (sizeof (*local_got_ents) |
4401 | + sizeof (*local_plt) | |
4402 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4403 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4404 | if (local_got_ents == NULL) |
e054468f | 4405 | return NULL; |
411e1bfb AM |
4406 | elf_local_got_ents (abfd) = local_got_ents; |
4407 | } | |
4408 | ||
37da22e5 | 4409 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4410 | { |
4411 | struct got_entry *ent; | |
4412 | ||
4413 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4414 | if (ent->addend == r_addend |
4415 | && ent->owner == abfd | |
4416 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4417 | break; |
4418 | if (ent == NULL) | |
4419 | { | |
4420 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4421 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4422 | if (ent == NULL) |
4423 | return FALSE; | |
4424 | ent->next = local_got_ents[r_symndx]; | |
4425 | ent->addend = r_addend; | |
e717da7e | 4426 | ent->owner = abfd; |
411e1bfb | 4427 | ent->tls_type = tls_type; |
927be08e | 4428 | ent->is_indirect = FALSE; |
411e1bfb AM |
4429 | ent->got.refcount = 0; |
4430 | local_got_ents[r_symndx] = ent; | |
4431 | } | |
4432 | ent->got.refcount += 1; | |
4433 | } | |
4434 | ||
e054468f | 4435 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4436 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4437 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4438 | |
4439 | return local_plt + r_symndx; | |
65f38f15 AM |
4440 | } |
4441 | ||
411e1bfb | 4442 | static bfd_boolean |
e054468f | 4443 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4444 | { |
411e1bfb | 4445 | struct plt_entry *ent; |
1e2f5b6e | 4446 | |
e054468f | 4447 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4448 | if (ent->addend == addend) |
4449 | break; | |
4450 | if (ent == NULL) | |
1e2f5b6e | 4451 | { |
411e1bfb | 4452 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4453 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4454 | if (ent == NULL) |
4455 | return FALSE; | |
e054468f | 4456 | ent->next = *plist; |
411e1bfb AM |
4457 | ent->addend = addend; |
4458 | ent->plt.refcount = 0; | |
e054468f | 4459 | *plist = ent; |
1e2f5b6e | 4460 | } |
411e1bfb | 4461 | ent->plt.refcount += 1; |
b34976b6 | 4462 | return TRUE; |
1e2f5b6e AM |
4463 | } |
4464 | ||
e054468f AM |
4465 | static bfd_boolean |
4466 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4467 | { | |
4468 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4469 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4470 | || r_type == R_PPC64_REL14 |
4471 | || r_type == R_PPC64_REL14_BRTAKEN | |
4472 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4473 | || r_type == R_PPC64_ADDR24 | |
4474 | || r_type == R_PPC64_ADDR14 | |
4475 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4476 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4477 | || r_type == R_PPC64_PLTCALL |
4478 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4479 | } |
4480 | ||
4481 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4482 | ||
4483 | static bfd_boolean | |
4484 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4485 | { | |
4486 | return (r_type == R_PPC64_PLT16_HA | |
4487 | || r_type == R_PPC64_PLT16_HI | |
4488 | || r_type == R_PPC64_PLT16_LO | |
4489 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4490 | || r_type == R_PPC64_PLT_PCREL34 |
4491 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4492 | || r_type == R_PPC64_PLTSEQ | |
4493 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4494 | } |
4495 | ||
5bd4f169 | 4496 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4497 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4498 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4499 | |
b34976b6 | 4500 | static bfd_boolean |
4ce794b7 AM |
4501 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4502 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4503 | { |
65f38f15 | 4504 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4505 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4506 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4507 | const Elf_Internal_Rela *rel; |
4508 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4509 | asection *sreloc; |
3a71aa26 | 4510 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4511 | bfd_boolean is_opd; |
5bd4f169 | 4512 | |
0e1862bb | 4513 | if (bfd_link_relocatable (info)) |
b34976b6 | 4514 | return TRUE; |
5bd4f169 | 4515 | |
680a3378 AM |
4516 | /* Don't do anything special with non-loaded, non-alloced sections. |
4517 | In particular, any relocs in such sections should not affect GOT | |
4518 | and PLT reference counting (ie. we don't allow them to create GOT | |
4519 | or PLT entries), there's no possibility or desire to optimize TLS | |
4520 | relocs, and there's not much point in propagating relocs to shared | |
4521 | libs that the dynamic linker won't relocate. */ | |
4522 | if ((sec->flags & SEC_ALLOC) == 0) | |
4523 | return TRUE; | |
4524 | ||
0c8d6e5c | 4525 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4526 | |
65f38f15 | 4527 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4528 | if (htab == NULL) |
4529 | return FALSE; | |
4530 | ||
3a71aa26 AM |
4531 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4532 | FALSE, FALSE, TRUE); | |
4533 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4534 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4535 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4536 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4537 | sreloc = NULL; |
b9399fcf | 4538 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4539 | rel_end = relocs + sec->reloc_count; |
4540 | for (rel = relocs; rel < rel_end; rel++) | |
4541 | { | |
4542 | unsigned long r_symndx; | |
4543 | struct elf_link_hash_entry *h; | |
04c9666a | 4544 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4545 | int tls_type; |
7c8fe5c4 | 4546 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4547 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4548 | |
4549 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4550 | if (r_symndx < symtab_hdr->sh_info) | |
4551 | h = NULL; | |
4552 | else | |
973a3492 L |
4553 | { |
4554 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4555 | h = elf_follow_link (h); |
1c865ab2 AM |
4556 | |
4557 | if (h == htab->elf.hgot) | |
4558 | sec->has_toc_reloc = 1; | |
973a3492 | 4559 | } |
5bd4f169 | 4560 | |
5663e321 AM |
4561 | r_type = ELF64_R_TYPE (rel->r_info); |
4562 | switch (r_type) | |
4563 | { | |
04bdff6a AM |
4564 | case R_PPC64_D34: |
4565 | case R_PPC64_D34_LO: | |
4566 | case R_PPC64_D34_HI30: | |
4567 | case R_PPC64_D34_HA30: | |
4568 | case R_PPC64_D28: | |
c213164a AM |
4569 | case R_PPC64_TPREL34: |
4570 | case R_PPC64_DTPREL34: | |
04bdff6a | 4571 | case R_PPC64_PCREL34: |
5663e321 | 4572 | case R_PPC64_GOT_PCREL34: |
c213164a AM |
4573 | case R_PPC64_GOT_TLSGD34: |
4574 | case R_PPC64_GOT_TLSLD34: | |
4575 | case R_PPC64_GOT_TPREL34: | |
4576 | case R_PPC64_GOT_DTPREL34: | |
5663e321 AM |
4577 | case R_PPC64_PLT_PCREL34: |
4578 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a AM |
4579 | case R_PPC64_PCREL28: |
4580 | htab->powerxx_stubs = 1; | |
133a1f60 AM |
4581 | break; |
4582 | default: | |
5663e321 AM |
4583 | break; |
4584 | } | |
903b777d AM |
4585 | |
4586 | switch (r_type) | |
4587 | { | |
4588 | case R_PPC64_PLT16_HA: | |
4589 | case R_PPC64_GOT_TLSLD16_HA: | |
4590 | case R_PPC64_GOT_TLSGD16_HA: | |
4591 | case R_PPC64_GOT_TPREL16_HA: | |
4592 | case R_PPC64_GOT_DTPREL16_HA: | |
4593 | case R_PPC64_GOT16_HA: | |
4594 | case R_PPC64_TOC16_HA: | |
4595 | case R_PPC64_PLT16_LO: | |
4596 | case R_PPC64_PLT16_LO_DS: | |
4597 | case R_PPC64_GOT_TLSLD16_LO: | |
4598 | case R_PPC64_GOT_TLSGD16_LO: | |
4599 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4600 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4601 | case R_PPC64_GOT16_LO: | |
4602 | case R_PPC64_GOT16_LO_DS: | |
4603 | case R_PPC64_TOC16_LO: | |
4604 | case R_PPC64_TOC16_LO_DS: | |
4605 | case R_PPC64_GOT_PCREL34: | |
4606 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4607 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4608 | break; | |
4609 | default: | |
4610 | break; | |
4611 | } | |
4612 | ||
f749f26e | 4613 | ifunc = NULL; |
25f23106 AM |
4614 | if (h != NULL) |
4615 | { | |
4616 | if (h->type == STT_GNU_IFUNC) | |
4617 | { | |
4618 | h->needs_plt = 1; | |
4619 | ifunc = &h->plt.plist; | |
4620 | } | |
4621 | } | |
4622 | else | |
4623 | { | |
4624 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4625 | abfd, r_symndx); | |
4626 | if (isym == NULL) | |
4627 | return FALSE; | |
4628 | ||
4629 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4630 | { | |
4631 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4632 | rel->r_addend, |
37da22e5 | 4633 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4634 | if (ifunc == NULL) |
4635 | return FALSE; | |
4636 | } | |
4637 | } | |
727fc41e | 4638 | |
f749f26e | 4639 | tls_type = 0; |
a33d1f77 | 4640 | switch (r_type) |
5bd4f169 | 4641 | { |
727fc41e AM |
4642 | case R_PPC64_TLSGD: |
4643 | case R_PPC64_TLSLD: | |
4644 | /* These special tls relocs tie a call to __tls_get_addr with | |
4645 | its parameter symbol. */ | |
37da22e5 AM |
4646 | if (h != NULL) |
4647 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
4648 | else | |
4649 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4650 | rel->r_addend, |
37da22e5 AM |
4651 | NON_GOT | TLS_TLS | TLS_MARK)) |
4652 | return FALSE; | |
4653 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4654 | break; |
4655 | ||
411e1bfb AM |
4656 | case R_PPC64_GOT_TLSLD16: |
4657 | case R_PPC64_GOT_TLSLD16_LO: | |
4658 | case R_PPC64_GOT_TLSLD16_HI: | |
4659 | case R_PPC64_GOT_TLSLD16_HA: | |
c213164a | 4660 | case R_PPC64_GOT_TLSLD34: |
951fd09b | 4661 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4662 | goto dogottls; |
4663 | ||
4664 | case R_PPC64_GOT_TLSGD16: | |
4665 | case R_PPC64_GOT_TLSGD16_LO: | |
4666 | case R_PPC64_GOT_TLSGD16_HI: | |
4667 | case R_PPC64_GOT_TLSGD16_HA: | |
c213164a | 4668 | case R_PPC64_GOT_TLSGD34: |
951fd09b | 4669 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4670 | goto dogottls; |
4671 | ||
4672 | case R_PPC64_GOT_TPREL16_DS: | |
4673 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4674 | case R_PPC64_GOT_TPREL16_HI: | |
4675 | case R_PPC64_GOT_TPREL16_HA: | |
c213164a | 4676 | case R_PPC64_GOT_TPREL34: |
7c8bbca5 | 4677 | if (bfd_link_dll (info)) |
411e1bfb AM |
4678 | info->flags |= DF_STATIC_TLS; |
4679 | tls_type = TLS_TLS | TLS_TPREL; | |
4680 | goto dogottls; | |
4681 | ||
4682 | case R_PPC64_GOT_DTPREL16_DS: | |
4683 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4684 | case R_PPC64_GOT_DTPREL16_HI: | |
4685 | case R_PPC64_GOT_DTPREL16_HA: | |
c213164a | 4686 | case R_PPC64_GOT_DTPREL34: |
411e1bfb AM |
4687 | tls_type = TLS_TLS | TLS_DTPREL; |
4688 | dogottls: | |
4689 | sec->has_tls_reloc = 1; | |
066f4018 | 4690 | goto dogot; |
411e1bfb | 4691 | |
903b777d AM |
4692 | case R_PPC64_GOT16: |
4693 | case R_PPC64_GOT16_LO: | |
4694 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4695 | case R_PPC64_GOT16_HA: |
903b777d | 4696 | case R_PPC64_GOT16_DS: |
066f4018 | 4697 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4698 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4699 | dogot: |
65f38f15 | 4700 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4701 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4702 | if (r_type == R_PPC64_GOT_TLSLD16 |
4703 | || r_type == R_PPC64_GOT_TLSGD16 | |
4704 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4705 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4706 | || r_type == R_PPC64_GOT16 | |
4707 | || r_type == R_PPC64_GOT16_DS) | |
4708 | { | |
4709 | htab->do_multi_toc = 1; | |
d77c8a4b | 4710 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4711 | } |
4712 | ||
e717da7e AM |
4713 | if (ppc64_elf_tdata (abfd)->got == NULL |
4714 | && !create_got_section (abfd, info)) | |
b34976b6 | 4715 | return FALSE; |
5bd4f169 AM |
4716 | |
4717 | if (h != NULL) | |
4718 | { | |
411e1bfb AM |
4719 | struct ppc_link_hash_entry *eh; |
4720 | struct got_entry *ent; | |
65f38f15 | 4721 | |
411e1bfb AM |
4722 | eh = (struct ppc_link_hash_entry *) h; |
4723 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
133a1f60 | 4724 | if (ent->addend == rel->r_addend |
e717da7e | 4725 | && ent->owner == abfd |
411e1bfb AM |
4726 | && ent->tls_type == tls_type) |
4727 | break; | |
4728 | if (ent == NULL) | |
5bd4f169 | 4729 | { |
411e1bfb | 4730 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4731 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4732 | if (ent == NULL) |
b34976b6 | 4733 | return FALSE; |
411e1bfb | 4734 | ent->next = eh->elf.got.glist; |
133a1f60 | 4735 | ent->addend = rel->r_addend; |
e717da7e | 4736 | ent->owner = abfd; |
411e1bfb | 4737 | ent->tls_type = tls_type; |
927be08e | 4738 | ent->is_indirect = FALSE; |
411e1bfb AM |
4739 | ent->got.refcount = 0; |
4740 | eh->elf.got.glist = ent; | |
5bd4f169 | 4741 | } |
411e1bfb | 4742 | ent->got.refcount += 1; |
e7b938ca | 4743 | eh->tls_mask |= tls_type; |
5bd4f169 | 4744 | } |
411e1bfb AM |
4745 | else |
4746 | /* This is a global offset table entry for a local symbol. */ | |
4747 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4748 | rel->r_addend, tls_type)) |
411e1bfb | 4749 | return FALSE; |
a345bc8d AM |
4750 | |
4751 | /* We may also need a plt entry if the symbol turns out to be | |
4752 | an ifunc. */ | |
0e1862bb | 4753 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d | 4754 | { |
133a1f60 | 4755 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
a345bc8d AM |
4756 | return FALSE; |
4757 | } | |
5bd4f169 AM |
4758 | break; |
4759 | ||
5bd4f169 | 4760 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4761 | case R_PPC64_PLT16_HI: |
4762 | case R_PPC64_PLT16_LO: | |
08be3224 | 4763 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4764 | case R_PPC64_PLT_PCREL34: |
4765 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4766 | case R_PPC64_PLT32: |
4767 | case R_PPC64_PLT64: | |
cbf95972 AM |
4768 | /* This symbol requires a procedure linkage table entry. */ |
4769 | plt_list = ifunc; | |
4770 | if (h != NULL) | |
e054468f | 4771 | { |
e054468f AM |
4772 | h->needs_plt = 1; |
4773 | if (h->root.root.string[0] == '.' | |
4774 | && h->root.root.string[1] != '\0') | |
4775 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 4776 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
4777 | plt_list = &h->plt.plist; |
4778 | } | |
4779 | if (plt_list == NULL) | |
2d7ad24e | 4780 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 4781 | rel->r_addend, |
2d7ad24e | 4782 | NON_GOT | PLT_KEEP); |
133a1f60 | 4783 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4784 | return FALSE; |
5bd4f169 AM |
4785 | break; |
4786 | ||
4787 | /* The following relocations don't need to propagate the | |
4788 | relocation if linking a shared object since they are | |
4789 | section relative. */ | |
4790 | case R_PPC64_SECTOFF: | |
4791 | case R_PPC64_SECTOFF_LO: | |
4792 | case R_PPC64_SECTOFF_HI: | |
4793 | case R_PPC64_SECTOFF_HA: | |
4794 | case R_PPC64_SECTOFF_DS: | |
4795 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4796 | case R_PPC64_DTPREL16: |
4797 | case R_PPC64_DTPREL16_LO: | |
4798 | case R_PPC64_DTPREL16_HI: | |
4799 | case R_PPC64_DTPREL16_HA: | |
4800 | case R_PPC64_DTPREL16_DS: | |
4801 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4802 | case R_PPC64_DTPREL16_HIGH: |
4803 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4804 | case R_PPC64_DTPREL16_HIGHER: |
4805 | case R_PPC64_DTPREL16_HIGHERA: | |
4806 | case R_PPC64_DTPREL16_HIGHEST: | |
4807 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4808 | break; |
4809 | ||
ad8e1ba5 | 4810 | /* Nor do these. */ |
25f23106 AM |
4811 | case R_PPC64_REL16: |
4812 | case R_PPC64_REL16_LO: | |
4813 | case R_PPC64_REL16_HI: | |
4814 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4815 | case R_PPC64_REL16_HIGH: |
4816 | case R_PPC64_REL16_HIGHA: | |
4817 | case R_PPC64_REL16_HIGHER: | |
4818 | case R_PPC64_REL16_HIGHERA: | |
4819 | case R_PPC64_REL16_HIGHEST: | |
4820 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4821 | case R_PPC64_REL16_HIGHER34: |
4822 | case R_PPC64_REL16_HIGHERA34: | |
4823 | case R_PPC64_REL16_HIGHEST34: | |
4824 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4825 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4826 | break; |
4827 | ||
45965137 AM |
4828 | /* Not supported as a dynamic relocation. */ |
4829 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4830 | if (bfd_link_pic (info)) |
45965137 AM |
4831 | { |
4832 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4833 | ppc_howto_init (); | |
695344c0 | 4834 | /* xgettext:c-format */ |
174d0a74 | 4835 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4836 | "in shared libraries and PIEs\n"), |
45965137 AM |
4837 | abfd, sec, rel->r_offset, |
4838 | ppc64_elf_howto_table[r_type]->name); | |
4839 | bfd_set_error (bfd_error_bad_value); | |
4840 | return FALSE; | |
4841 | } | |
4842 | break; | |
4843 | ||
ad8e1ba5 | 4844 | case R_PPC64_TOC16: |
33c0ec9d AM |
4845 | case R_PPC64_TOC16_DS: |
4846 | htab->do_multi_toc = 1; | |
d77c8a4b | 4847 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4848 | /* Fall through. */ |
ad8e1ba5 AM |
4849 | case R_PPC64_TOC16_LO: |
4850 | case R_PPC64_TOC16_HI: | |
4851 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4852 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4853 | sec->has_toc_reloc = 1; |
ec73ddcd | 4854 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
4855 | { |
4856 | /* We may need a copy reloc. */ | |
4857 | h->non_got_ref = 1; | |
4858 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
4859 | glibc ld.so as of 2019-08 will error out if one of | |
4860 | these relocations is emitted. */ | |
4861 | h->needs_copy = 1; | |
4862 | goto dodyn; | |
4863 | } | |
ad8e1ba5 AM |
4864 | break; |
4865 | ||
006589cf AM |
4866 | /* Marker reloc. */ |
4867 | case R_PPC64_ENTRY: | |
4868 | break; | |
4869 | ||
5bd4f169 AM |
4870 | /* This relocation describes the C++ object vtable hierarchy. |
4871 | Reconstruct it for later use during GC. */ | |
4872 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4873 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4874 | return FALSE; |
5bd4f169 AM |
4875 | break; |
4876 | ||
4877 | /* This relocation describes which C++ vtable entries are actually | |
4878 | used. Record for later use during GC. */ | |
4879 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4880 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4881 | return FALSE; |
5bd4f169 AM |
4882 | break; |
4883 | ||
721956f4 AM |
4884 | case R_PPC64_REL14: |
4885 | case R_PPC64_REL14_BRTAKEN: | |
4886 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4887 | { |
4888 | asection *dest = NULL; | |
4889 | ||
4890 | /* Heuristic: If jumping outside our section, chances are | |
4891 | we are going to need a stub. */ | |
4892 | if (h != NULL) | |
4893 | { | |
4894 | /* If the sym is weak it may be overridden later, so | |
4895 | don't assume we know where a weak sym lives. */ | |
4896 | if (h->root.type == bfd_link_hash_defined) | |
4897 | dest = h->root.u.def.section; | |
4898 | } | |
4899 | else | |
87d72d41 AM |
4900 | { |
4901 | Elf_Internal_Sym *isym; | |
4902 | ||
4903 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4904 | abfd, r_symndx); | |
4905 | if (isym == NULL) | |
4906 | return FALSE; | |
4907 | ||
4908 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4909 | } | |
4910 | ||
220c76dd | 4911 | if (dest != sec) |
7c8fe5c4 | 4912 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4913 | } |
3e04d765 AM |
4914 | goto rel24; |
4915 | ||
4916 | case R_PPC64_PLTCALL: | |
5663e321 | 4917 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4918 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4919 | /* Fall through. */ |
4920 | ||
5d1634d7 | 4921 | case R_PPC64_REL24: |
05d0e962 | 4922 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4923 | rel24: |
cbf95972 AM |
4924 | plt_list = ifunc; |
4925 | if (h != NULL) | |
5d1634d7 | 4926 | { |
e054468f AM |
4927 | h->needs_plt = 1; |
4928 | if (h->root.root.string[0] == '.' | |
4929 | && h->root.root.string[1] != '\0') | |
4930 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 4931 | |
3a71aa26 | 4932 | if (h == tga || h == dottga) |
cbf95972 AM |
4933 | { |
4934 | sec->has_tls_reloc = 1; | |
4935 | if (rel != relocs | |
4936 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4937 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4938 | /* We have a new-style __tls_get_addr call with | |
4939 | a marker reloc. */ | |
4940 | ; | |
4941 | else | |
4942 | /* Mark this section as having an old-style call. */ | |
9737e8af | 4943 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
4944 | } |
4945 | plt_list = &h->plt.plist; | |
411e1bfb | 4946 | } |
cbf95972 AM |
4947 | |
4948 | /* We may need a .plt entry if the function this reloc | |
4949 | refers to is in a shared lib. */ | |
4950 | if (plt_list | |
133a1f60 | 4951 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4952 | return FALSE; |
411e1bfb AM |
4953 | break; |
4954 | ||
cbf95972 AM |
4955 | case R_PPC64_ADDR14: |
4956 | case R_PPC64_ADDR14_BRNTAKEN: | |
4957 | case R_PPC64_ADDR14_BRTAKEN: | |
4958 | case R_PPC64_ADDR24: | |
4959 | goto dodyn; | |
4960 | ||
411e1bfb AM |
4961 | case R_PPC64_TPREL64: |
4962 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 4963 | if (bfd_link_dll (info)) |
411e1bfb AM |
4964 | info->flags |= DF_STATIC_TLS; |
4965 | goto dotlstoc; | |
4966 | ||
4967 | case R_PPC64_DTPMOD64: | |
4968 | if (rel + 1 < rel_end | |
4969 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4970 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4971 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4972 | else |
951fd09b | 4973 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4974 | goto dotlstoc; |
4975 | ||
4976 | case R_PPC64_DTPREL64: | |
4977 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4978 | if (rel != relocs | |
4979 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4980 | && rel[-1].r_offset == rel->r_offset - 8) | |
4981 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4982 | Don't mark with TLS_DTPREL. */ | |
4983 | goto dodyn; | |
4984 | ||
4985 | dotlstoc: | |
4986 | sec->has_tls_reloc = 1; | |
4987 | if (h != NULL) | |
4988 | { | |
4989 | struct ppc_link_hash_entry *eh; | |
4990 | eh = (struct ppc_link_hash_entry *) h; | |
46e9995a | 4991 | eh->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
4992 | } |
4993 | else | |
4994 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4995 | rel->r_addend, tls_type)) |
411e1bfb AM |
4996 | return FALSE; |
4997 | ||
7c8fe5c4 AM |
4998 | ppc64_sec = ppc64_elf_section_data (sec); |
4999 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5000 | { |
3a71aa26 AM |
5001 | bfd_size_type amt; |
5002 | ||
e7b938ca | 5003 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5004 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5005 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5006 | if (ppc64_sec->u.toc.symndx == NULL) | |
5007 | return FALSE; | |
5008 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5009 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5010 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5011 | return FALSE; |
7c8fe5c4 AM |
5012 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5013 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5014 | } |
5015 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 5016 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5017 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5018 | |
5019 | /* Mark the second slot of a GD or LD entry. | |
5020 | -1 to indicate GD and -2 to indicate LD. */ | |
5021 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5022 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5023 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5024 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5025 | goto dodyn; |
5026 | ||
5027 | case R_PPC64_TPREL16: | |
5028 | case R_PPC64_TPREL16_LO: | |
5029 | case R_PPC64_TPREL16_HI: | |
5030 | case R_PPC64_TPREL16_HA: | |
5031 | case R_PPC64_TPREL16_DS: | |
5032 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5033 | case R_PPC64_TPREL16_HIGH: |
5034 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5035 | case R_PPC64_TPREL16_HIGHER: |
5036 | case R_PPC64_TPREL16_HIGHERA: | |
5037 | case R_PPC64_TPREL16_HIGHEST: | |
5038 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 5039 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
5040 | if (bfd_link_dll (info)) |
5041 | info->flags |= DF_STATIC_TLS; | |
5042 | goto dodyn; | |
5d1634d7 | 5043 | |
e86ce104 | 5044 | case R_PPC64_ADDR64: |
b9399fcf | 5045 | if (is_opd |
1e2f5b6e | 5046 | && rel + 1 < rel_end |
4ce794b7 | 5047 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5048 | { |
8387904d | 5049 | if (h != NULL) |
8c5b4e52 | 5050 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 5051 | } |
e86ce104 AM |
5052 | /* Fall through. */ |
5053 | ||
65f38f15 AM |
5054 | case R_PPC64_ADDR16: |
5055 | case R_PPC64_ADDR16_DS: | |
5056 | case R_PPC64_ADDR16_HA: | |
5057 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5058 | case R_PPC64_ADDR16_HIGH: |
5059 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5060 | case R_PPC64_ADDR16_HIGHER: |
5061 | case R_PPC64_ADDR16_HIGHERA: | |
5062 | case R_PPC64_ADDR16_HIGHEST: | |
5063 | case R_PPC64_ADDR16_HIGHESTA: | |
5064 | case R_PPC64_ADDR16_LO: | |
5065 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5066 | case R_PPC64_D34: |
5067 | case R_PPC64_D34_LO: | |
5068 | case R_PPC64_D34_HI30: | |
5069 | case R_PPC64_D34_HA30: | |
5070 | case R_PPC64_ADDR16_HIGHER34: | |
5071 | case R_PPC64_ADDR16_HIGHERA34: | |
5072 | case R_PPC64_ADDR16_HIGHEST34: | |
5073 | case R_PPC64_ADDR16_HIGHESTA34: | |
5074 | case R_PPC64_D28: | |
0e1862bb | 5075 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5076 | && rel->r_addend == 0) |
5077 | { | |
5078 | /* We may need a .plt entry if this reloc refers to a | |
5079 | function in a shared lib. */ | |
5663e321 | 5080 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
5081 | return FALSE; |
5082 | h->pointer_equality_needed = 1; | |
5083 | } | |
5084 | /* Fall through. */ | |
5085 | ||
5086 | case R_PPC64_REL30: | |
5087 | case R_PPC64_REL32: | |
5088 | case R_PPC64_REL64: | |
65f38f15 | 5089 | case R_PPC64_ADDR32: |
65f38f15 AM |
5090 | case R_PPC64_UADDR16: |
5091 | case R_PPC64_UADDR32: | |
5092 | case R_PPC64_UADDR64: | |
5bd4f169 | 5093 | case R_PPC64_TOC: |
ec73ddcd | 5094 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5095 | /* We may need a copy reloc. */ |
f5385ebf | 5096 | h->non_got_ref = 1; |
81848ca0 | 5097 | |
41bd81ab | 5098 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5099 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5100 | break; |
e86ce104 | 5101 | |
65f38f15 AM |
5102 | /* If we are creating a shared library, and this is a reloc |
5103 | against a global symbol, or a non PC relative reloc | |
5104 | against a local symbol, then we need to copy the reloc | |
5105 | into the shared library. However, if we are linking with | |
5106 | -Bsymbolic, we do not need to copy a reloc against a | |
5107 | global symbol which is defined in an object we are | |
5108 | including in the link (i.e., DEF_REGULAR is set). At | |
5109 | this point we have not seen all the input files, so it is | |
5110 | possible that DEF_REGULAR is not set now but will be set | |
5111 | later (it is never cleared). In case of a weak definition, | |
5112 | DEF_REGULAR may be cleared later by a strong definition in | |
5113 | a shared library. We account for that possibility below by | |
f4656909 | 5114 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5115 | table entry. A similar situation occurs when creating |
5116 | shared libraries and symbol visibility changes render the | |
5117 | symbol local. | |
5118 | ||
5119 | If on the other hand, we are creating an executable, we | |
5120 | may need to keep relocations for symbols satisfied by a | |
5121 | dynamic library if we manage to avoid copy relocs for the | |
5122 | symbol. */ | |
411e1bfb | 5123 | dodyn: |
ec73ddcd AM |
5124 | if ((h != NULL |
5125 | && (h->root.type == bfd_link_hash_defweak | |
5126 | || !h->def_regular)) | |
5127 | || (h != NULL | |
5128 | && !bfd_link_executable (info) | |
5129 | && !SYMBOLIC_BIND (info, h)) | |
5130 | || (bfd_link_pic (info) | |
5131 | && must_be_dyn_reloc (info, r_type)) | |
0e1862bb | 5132 | || (!bfd_link_pic (info) |
25f23106 | 5133 | && ifunc != NULL)) |
5bd4f169 | 5134 | { |
65f38f15 AM |
5135 | /* We must copy these reloc types into the output file. |
5136 | Create a reloc section in dynobj and make room for | |
5137 | this reloc. */ | |
5bd4f169 AM |
5138 | if (sreloc == NULL) |
5139 | { | |
83bac4b0 NC |
5140 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5141 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5142 | |
5bd4f169 | 5143 | if (sreloc == NULL) |
83bac4b0 | 5144 | return FALSE; |
5bd4f169 AM |
5145 | } |
5146 | ||
65f38f15 AM |
5147 | /* If this is a global symbol, we count the number of |
5148 | relocations we need for this symbol. */ | |
5149 | if (h != NULL) | |
5150 | { | |
19e08130 AM |
5151 | struct elf_dyn_relocs *p; |
5152 | struct elf_dyn_relocs **head; | |
5153 | ||
ec338859 | 5154 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5155 | p = *head; |
5156 | if (p == NULL || p->sec != sec) | |
5157 | { | |
5158 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5159 | if (p == NULL) | |
5160 | return FALSE; | |
5161 | p->next = *head; | |
5162 | *head = p; | |
5163 | p->sec = sec; | |
5164 | p->count = 0; | |
5165 | p->pc_count = 0; | |
5166 | } | |
5167 | p->count += 1; | |
5168 | if (!must_be_dyn_reloc (info, r_type)) | |
5169 | p->pc_count += 1; | |
65f38f15 AM |
5170 | } |
5171 | else | |
5172 | { | |
ec338859 AM |
5173 | /* Track dynamic relocs needed for local syms too. |
5174 | We really need local syms available to do this | |
5175 | easily. Oh well. */ | |
19e08130 AM |
5176 | struct ppc_dyn_relocs *p; |
5177 | struct ppc_dyn_relocs **head; | |
5178 | bfd_boolean is_ifunc; | |
ec338859 | 5179 | asection *s; |
6edfbbad | 5180 | void *vpp; |
87d72d41 | 5181 | Elf_Internal_Sym *isym; |
6edfbbad | 5182 | |
87d72d41 AM |
5183 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5184 | abfd, r_symndx); | |
5185 | if (isym == NULL) | |
b34976b6 | 5186 | return FALSE; |
ec338859 | 5187 | |
87d72d41 AM |
5188 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5189 | if (s == NULL) | |
5190 | s = sec; | |
5191 | ||
6edfbbad | 5192 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5193 | head = (struct ppc_dyn_relocs **) vpp; |
5194 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5195 | p = *head; | |
5196 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5197 | p = p->next; | |
5198 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5199 | { | |
5200 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5201 | if (p == NULL) | |
5202 | return FALSE; | |
5203 | p->next = *head; | |
5204 | *head = p; | |
5205 | p->sec = sec; | |
5206 | p->ifunc = is_ifunc; | |
5207 | p->count = 0; | |
5208 | } | |
5209 | p->count += 1; | |
ec338859 | 5210 | } |
65f38f15 | 5211 | } |
5bd4f169 | 5212 | break; |
65f38f15 AM |
5213 | |
5214 | default: | |
96e0dda4 | 5215 | break; |
5bd4f169 AM |
5216 | } |
5217 | } | |
5218 | ||
b34976b6 | 5219 | return TRUE; |
5bd4f169 AM |
5220 | } |
5221 | ||
ee67d69a AM |
5222 | /* Merge backend specific data from an object file to the output |
5223 | object file when linking. */ | |
5224 | ||
5225 | static bfd_boolean | |
50e03d47 | 5226 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5227 | { |
50e03d47 | 5228 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5229 | unsigned long iflags, oflags; |
5230 | ||
5231 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5232 | return TRUE; | |
5233 | ||
5234 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5235 | return TRUE; | |
5236 | ||
50e03d47 | 5237 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5238 | return FALSE; |
5239 | ||
5240 | iflags = elf_elfheader (ibfd)->e_flags; | |
5241 | oflags = elf_elfheader (obfd)->e_flags; | |
5242 | ||
f6c7c3e8 | 5243 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5244 | { |
4eca0228 | 5245 | _bfd_error_handler |
695344c0 | 5246 | /* xgettext:c-format */ |
871b3ab2 | 5247 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5248 | bfd_set_error (bfd_error_bad_value); |
5249 | return FALSE; | |
5250 | } | |
f6c7c3e8 | 5251 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5252 | { |
4eca0228 | 5253 | _bfd_error_handler |
695344c0 | 5254 | /* xgettext:c-format */ |
871b3ab2 | 5255 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5256 | ibfd, iflags, oflags); |
5257 | bfd_set_error (bfd_error_bad_value); | |
5258 | return FALSE; | |
5259 | } | |
5260 | ||
4a91d0ba AM |
5261 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5262 | return FALSE; | |
005d79fd | 5263 | |
ee67d69a | 5264 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5265 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5266 | } |
5267 | ||
5268 | static bfd_boolean | |
5269 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5270 | { | |
5271 | /* Print normal ELF private data. */ | |
5272 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5273 | ||
5274 | if (elf_elfheader (abfd)->e_flags != 0) | |
5275 | { | |
5276 | FILE *file = ptr; | |
5277 | ||
ee67d69a AM |
5278 | fprintf (file, _("private flags = 0x%lx:"), |
5279 | elf_elfheader (abfd)->e_flags); | |
5280 | ||
5281 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5282 | fprintf (file, _(" [abiv%ld]"), | |
5283 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5284 | fputc ('\n', file); | |
5285 | } | |
5286 | ||
5287 | return TRUE; | |
5288 | } | |
5289 | ||
8387904d | 5290 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5291 | of the code entry point, and its section, which must be in the same |
5292 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5293 | |
5294 | static bfd_vma | |
5295 | opd_entry_value (asection *opd_sec, | |
5296 | bfd_vma offset, | |
5297 | asection **code_sec, | |
aef36ac1 AM |
5298 | bfd_vma *code_off, |
5299 | bfd_boolean in_code_sec) | |
8387904d AM |
5300 | { |
5301 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5302 | Elf_Internal_Rela *relocs; |
8387904d | 5303 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5304 | bfd_vma val; |
8387904d | 5305 | |
9f296da3 AM |
5306 | /* No relocs implies we are linking a --just-symbols object, or looking |
5307 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5308 | if (opd_sec->reloc_count == 0) |
5309 | { | |
729eabd5 | 5310 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5311 | |
729eabd5 AM |
5312 | if (contents == NULL) |
5313 | { | |
5314 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5315 | return (bfd_vma) -1; | |
5316 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5317 | } | |
ee1e4ede | 5318 | |
dbb3fbbb | 5319 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5320 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5321 | return (bfd_vma) -1; |
5322 | ||
729eabd5 | 5323 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5324 | if (code_sec != NULL) |
5325 | { | |
5326 | asection *sec, *likely = NULL; | |
ee1e4ede | 5327 | |
aef36ac1 | 5328 | if (in_code_sec) |
4b85d634 | 5329 | { |
aef36ac1 AM |
5330 | sec = *code_sec; |
5331 | if (sec->vma <= val | |
5332 | && val < sec->vma + sec->size) | |
5333 | likely = sec; | |
5334 | else | |
5335 | val = -1; | |
5336 | } | |
5337 | else | |
5338 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5339 | if (sec->vma <= val | |
5340 | && (sec->flags & SEC_LOAD) != 0 | |
5341 | && (sec->flags & SEC_ALLOC) != 0) | |
5342 | likely = sec; | |
5343 | if (likely != NULL) | |
5344 | { | |
5345 | *code_sec = likely; | |
5346 | if (code_off != NULL) | |
5347 | *code_off = val - likely->vma; | |
4b85d634 AM |
5348 | } |
5349 | } | |
aef36ac1 | 5350 | return val; |
4b85d634 AM |
5351 | } |
5352 | ||
0c8d6e5c | 5353 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5354 | |
729eabd5 | 5355 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5356 | if (relocs == NULL) |
5357 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5358 | /* PR 17512: file: df8e1fd6. */ |
5359 | if (relocs == NULL) | |
5360 | return (bfd_vma) -1; | |
645ea6a9 | 5361 | |
8387904d | 5362 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5363 | lo = relocs; |
8387904d | 5364 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5365 | val = (bfd_vma) -1; |
8387904d AM |
5366 | while (lo < hi) |
5367 | { | |
5368 | look = lo + (hi - lo) / 2; | |
5369 | if (look->r_offset < offset) | |
5370 | lo = look + 1; | |
5371 | else if (look->r_offset > offset) | |
5372 | hi = look; | |
5373 | else | |
5374 | { | |
0ffa91dd NC |
5375 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5376 | ||
8387904d AM |
5377 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5378 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5379 | { | |
5380 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5381 | asection *sec = NULL; |
8387904d | 5382 | |
b53dfeb2 AM |
5383 | if (symndx >= symtab_hdr->sh_info |
5384 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5385 | { |
5386 | struct elf_link_hash_entry **sym_hashes; | |
5387 | struct elf_link_hash_entry *rh; | |
5388 | ||
5389 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5390 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5391 | if (rh != NULL) |
5392 | { | |
5393 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5394 | if (rh->root.type != bfd_link_hash_defined |
5395 | && rh->root.type != bfd_link_hash_defweak) | |
5396 | break; | |
5397 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5398 | { |
bb854a36 AM |
5399 | val = rh->root.u.def.value; |
5400 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5401 | } |
5402 | } | |
5403 | } | |
5404 | ||
5405 | if (sec == NULL) | |
5406 | { | |
5407 | Elf_Internal_Sym *sym; | |
5408 | ||
5409 | if (symndx < symtab_hdr->sh_info) | |
5410 | { | |
5411 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5412 | if (sym == NULL) | |
5413 | { | |
5414 | size_t symcnt = symtab_hdr->sh_info; | |
5415 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5416 | symcnt, 0, | |
5417 | NULL, NULL, NULL); | |
5418 | if (sym == NULL) | |
5419 | break; | |
5420 | symtab_hdr->contents = (bfd_byte *) sym; | |
5421 | } | |
5422 | sym += symndx; | |
128205bb AM |
5423 | } |
5424 | else | |
5425 | { | |
b53dfeb2 AM |
5426 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5427 | 1, symndx, | |
5428 | NULL, NULL, NULL); | |
128205bb AM |
5429 | if (sym == NULL) |
5430 | break; | |
128205bb | 5431 | } |
b53dfeb2 AM |
5432 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5433 | if (sec == NULL) | |
5434 | break; | |
5435 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5436 | val = sym->st_value; | |
8387904d | 5437 | } |
b53dfeb2 | 5438 | |
8387904d AM |
5439 | val += look->r_addend; |
5440 | if (code_off != NULL) | |
5441 | *code_off = val; | |
5442 | if (code_sec != NULL) | |
aef36ac1 AM |
5443 | { |
5444 | if (in_code_sec && *code_sec != sec) | |
5445 | return -1; | |
5446 | else | |
5447 | *code_sec = sec; | |
5448 | } | |
b53dfeb2 | 5449 | if (sec->output_section != NULL) |
8387904d | 5450 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5451 | } |
5452 | break; | |
5453 | } | |
5454 | } | |
645ea6a9 | 5455 | |
645ea6a9 | 5456 | return val; |
8387904d AM |
5457 | } |
5458 | ||
aef36ac1 AM |
5459 | /* If the ELF symbol SYM might be a function in SEC, return the |
5460 | function size and set *CODE_OFF to the function's entry point, | |
5461 | otherwise return zero. */ | |
9f296da3 | 5462 | |
aef36ac1 AM |
5463 | static bfd_size_type |
5464 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5465 | bfd_vma *code_off) | |
9f296da3 | 5466 | { |
aef36ac1 AM |
5467 | bfd_size_type size; |
5468 | ||
5469 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5470 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5471 | return 0; | |
5472 | ||
5473 | size = 0; | |
5474 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5475 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5476 | ||
5477 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5478 | { |
b07bca4e AM |
5479 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5480 | bfd_vma symval = sym->value; | |
5481 | ||
5482 | if (opd != NULL | |
5483 | && opd->adjust != NULL | |
5484 | && elf_section_data (sym->section)->relocs != NULL) | |
5485 | { | |
5486 | /* opd_entry_value will use cached relocs that have been | |
5487 | adjusted, but with raw symbols. That means both local | |
5488 | and global symbols need adjusting. */ | |
5489 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5490 | if (adjust == -1) | |
5491 | return 0; | |
5492 | symval += adjust; | |
5493 | } | |
5494 | ||
5495 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5496 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5497 | return 0; | |
5498 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5499 | symbol. This size has nothing to do with the code size of the | |
5500 | function, which is what we're supposed to return, but the | |
5501 | code size isn't available without looking up the dot-sym. | |
5502 | However, doing that would be a waste of time particularly | |
5503 | since elf_find_function will look at the dot-sym anyway. | |
5504 | Now, elf_find_function will keep the largest size of any | |
5505 | function sym found at the code address of interest, so return | |
5506 | 1 here to avoid it incorrectly caching a larger function size | |
5507 | for a small function. This does mean we return the wrong | |
5508 | size for a new-ABI function of size 24, but all that does is | |
5509 | disable caching for such functions. */ | |
5510 | if (size == 24) | |
5511 | size = 1; | |
9f296da3 | 5512 | } |
aef36ac1 AM |
5513 | else |
5514 | { | |
5515 | if (sym->section != sec) | |
5516 | return 0; | |
5517 | *code_off = sym->value; | |
5518 | } | |
5519 | if (size == 0) | |
5520 | size = 1; | |
5521 | return size; | |
9f296da3 AM |
5522 | } |
5523 | ||
f378ab09 AM |
5524 | /* Return true if symbol is a strong function defined in an ELFv2 |
5525 | object with st_other localentry bits of zero, ie. its local entry | |
5526 | point coincides with its global entry point. */ | |
5527 | ||
5528 | static bfd_boolean | |
5529 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5530 | { | |
5531 | return (h != NULL | |
5532 | && h->type == STT_FUNC | |
5533 | && h->root.type == bfd_link_hash_defined | |
5534 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 5535 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
5536 | && is_ppc64_elf (h->root.u.def.section->owner) |
5537 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5538 | } | |
5539 | ||
854b41e7 AM |
5540 | /* Return true if symbol is defined in a regular object file. */ |
5541 | ||
5542 | static bfd_boolean | |
5543 | is_static_defined (struct elf_link_hash_entry *h) | |
5544 | { | |
5545 | return ((h->root.type == bfd_link_hash_defined | |
5546 | || h->root.type == bfd_link_hash_defweak) | |
5547 | && h->root.u.def.section != NULL | |
5548 | && h->root.u.def.section->output_section != NULL); | |
5549 | } | |
5550 | ||
b31867b6 AM |
5551 | /* If FDH is a function descriptor symbol, return the associated code |
5552 | entry symbol if it is defined. Return NULL otherwise. */ | |
5553 | ||
5554 | static struct ppc_link_hash_entry * | |
5555 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5556 | { | |
5557 | if (fdh->is_func_descriptor) | |
5558 | { | |
5559 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5560 | if (fh->elf.root.type == bfd_link_hash_defined | |
5561 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5562 | return fh; | |
5563 | } | |
5564 | return NULL; | |
5565 | } | |
5566 | ||
5567 | /* If FH is a function code entry symbol, return the associated | |
5568 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5569 | ||
5570 | static struct ppc_link_hash_entry * | |
5571 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5572 | { | |
5573 | if (fh->oh != NULL | |
5574 | && fh->oh->is_func_descriptor) | |
5575 | { | |
5576 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5577 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5578 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5579 | return fdh; | |
5580 | } | |
5581 | return NULL; | |
5582 | } | |
5583 | ||
8c5b4e52 AM |
5584 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5585 | ||
5586 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5587 | ||
5588 | static bfd_boolean | |
5589 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5590 | { | |
5591 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5592 | ||
5593 | if (htab != NULL && htab->need_func_desc_adj) | |
5594 | { | |
5595 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5596 | htab->need_func_desc_adj = 0; | |
5597 | } | |
5598 | return bfd_elf_gc_sections (abfd, info); | |
5599 | } | |
5600 | ||
74f0fb50 AM |
5601 | /* Mark all our entry sym sections, both opd and code section. */ |
5602 | ||
5603 | static void | |
5604 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5605 | { | |
5606 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5607 | struct bfd_sym_chain *sym; | |
5608 | ||
4dfe6ac6 NC |
5609 | if (htab == NULL) |
5610 | return; | |
5611 | ||
74f0fb50 AM |
5612 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5613 | { | |
b31867b6 | 5614 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5615 | asection *sec; |
5616 | ||
5617 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5618 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5619 | if (eh == NULL) |
5620 | continue; | |
5621 | if (eh->elf.root.type != bfd_link_hash_defined | |
5622 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5623 | continue; | |
5624 | ||
b31867b6 AM |
5625 | fh = defined_code_entry (eh); |
5626 | if (fh != NULL) | |
74f0fb50 | 5627 | { |
b31867b6 | 5628 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5629 | sec->flags |= SEC_KEEP; |
5630 | } | |
5631 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5632 | && opd_entry_value (eh->elf.root.u.def.section, | |
5633 | eh->elf.root.u.def.value, | |
aef36ac1 | 5634 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5635 | sec->flags |= SEC_KEEP; |
5636 | ||
5637 | sec = eh->elf.root.u.def.section; | |
5638 | sec->flags |= SEC_KEEP; | |
5639 | } | |
5640 | } | |
5641 | ||
64d03ab5 AM |
5642 | /* Mark sections containing dynamically referenced symbols. When |
5643 | building shared libraries, we must assume that any visible symbol is | |
5644 | referenced. */ | |
5645 | ||
5646 | static bfd_boolean | |
5647 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5648 | { | |
5649 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5650 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5651 | struct ppc_link_hash_entry *fdh; |
b407645f | 5652 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5653 | |
64d03ab5 | 5654 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5655 | fdh = defined_func_desc (eh); |
5656 | if (fdh != NULL) | |
5657 | eh = fdh; | |
64d03ab5 AM |
5658 | |
5659 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5660 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5661 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5662 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5663 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5664 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5665 | && (!bfd_link_executable (info) |
e278ae05 | 5666 | || info->gc_keep_exported |
b407645f AM |
5667 | || info->export_dynamic |
5668 | || (eh->elf.dynamic | |
5669 | && d != NULL | |
2cdcc330 AM |
5670 | && (*d->match) (&d->head, NULL, |
5671 | eh->elf.root.root.string))) | |
e278ae05 | 5672 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5673 | || !bfd_hide_sym_by_version (info->version_info, |
5674 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5675 | { |
5676 | asection *code_sec; | |
b31867b6 | 5677 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5678 | |
5679 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5680 | ||
5681 | /* Function descriptor syms cause the associated | |
5682 | function code sym section to be marked. */ | |
b31867b6 AM |
5683 | fh = defined_code_entry (eh); |
5684 | if (fh != NULL) | |
5685 | { | |
5686 | code_sec = fh->elf.root.u.def.section; | |
5687 | code_sec->flags |= SEC_KEEP; | |
5688 | } | |
64d03ab5 AM |
5689 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5690 | && opd_entry_value (eh->elf.root.u.def.section, | |
5691 | eh->elf.root.u.def.value, | |
aef36ac1 | 5692 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5693 | code_sec->flags |= SEC_KEEP; |
5694 | } | |
5695 | ||
5696 | return TRUE; | |
5697 | } | |
5698 | ||
5bd4f169 AM |
5699 | /* Return the section that should be marked against GC for a given |
5700 | relocation. */ | |
5701 | ||
5702 | static asection * | |
4ce794b7 | 5703 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5704 | struct bfd_link_info *info, |
4ce794b7 AM |
5705 | Elf_Internal_Rela *rel, |
5706 | struct elf_link_hash_entry *h, | |
5707 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5708 | { |
ccfa59ea AM |
5709 | asection *rsec; |
5710 | ||
ccfa59ea AM |
5711 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5712 | function sections, as all functions are referenced in .opd. */ | |
5713 | rsec = NULL; | |
5714 | if (get_opd_info (sec) != NULL) | |
5715 | return rsec; | |
1e2f5b6e | 5716 | |
5bd4f169 AM |
5717 | if (h != NULL) |
5718 | { | |
04c9666a | 5719 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5720 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5721 | |
4ce794b7 | 5722 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5723 | switch (r_type) |
5bd4f169 AM |
5724 | { |
5725 | case R_PPC64_GNU_VTINHERIT: | |
5726 | case R_PPC64_GNU_VTENTRY: | |
5727 | break; | |
5728 | ||
5729 | default: | |
5730 | switch (h->root.type) | |
5731 | { | |
5732 | case bfd_link_hash_defined: | |
5733 | case bfd_link_hash_defweak: | |
ccfa59ea | 5734 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5735 | fdh = defined_func_desc (eh); |
5736 | if (fdh != NULL) | |
8c5b4e52 AM |
5737 | { |
5738 | /* -mcall-aixdesc code references the dot-symbol on | |
5739 | a call reloc. Mark the function descriptor too | |
5740 | against garbage collection. */ | |
5741 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5742 | if (fdh->elf.is_weakalias) |
5743 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5744 | eh = fdh; |
5745 | } | |
1e2f5b6e AM |
5746 | |
5747 | /* Function descriptor syms cause the associated | |
5748 | function code sym section to be marked. */ | |
b31867b6 AM |
5749 | fh = defined_code_entry (eh); |
5750 | if (fh != NULL) | |
ccfa59ea AM |
5751 | { |
5752 | /* They also mark their opd section. */ | |
74f0fb50 | 5753 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5754 | |
b31867b6 | 5755 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5756 | } |
8387904d AM |
5757 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5758 | && opd_entry_value (eh->elf.root.u.def.section, | |
5759 | eh->elf.root.u.def.value, | |
aef36ac1 | 5760 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5761 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5762 | else |
1e2f5b6e AM |
5763 | rsec = h->root.u.def.section; |
5764 | break; | |
5bd4f169 AM |
5765 | |
5766 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5767 | rsec = h->root.u.c.p->section; |
5768 | break; | |
5bd4f169 AM |
5769 | |
5770 | default: | |
fb34365b | 5771 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5772 | } |
5773 | } | |
5774 | } | |
5775 | else | |
5776 | { | |
74f0fb50 | 5777 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5778 | |
5779 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5780 | opd = get_opd_info (rsec); |
5781 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5782 | { |
74f0fb50 | 5783 | rsec->gc_mark = 1; |
ccfa59ea | 5784 | |
51aecdc5 | 5785 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5786 | } |
5bd4f169 AM |
5787 | } |
5788 | ||
1e2f5b6e | 5789 | return rsec; |
5bd4f169 AM |
5790 | } |
5791 | ||
deb0e272 AM |
5792 | /* The maximum size of .sfpr. */ |
5793 | #define SFPR_MAX (218*4) | |
5794 | ||
5795 | struct sfpr_def_parms | |
5796 | { | |
699733f6 AM |
5797 | const char name[12]; |
5798 | unsigned char lo, hi; | |
2cdcc330 AM |
5799 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5800 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5801 | }; |
5802 | ||
a4b6fadd AM |
5803 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5804 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5805 | instead. */ | |
deb0e272 | 5806 | |
4dfe6ac6 | 5807 | static bfd_boolean |
a4b6fadd AM |
5808 | sfpr_define (struct bfd_link_info *info, |
5809 | const struct sfpr_def_parms *parm, | |
5810 | asection *stub_sec) | |
deb0e272 AM |
5811 | { |
5812 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5813 | unsigned int i; | |
5814 | size_t len = strlen (parm->name); | |
5815 | bfd_boolean writing = FALSE; | |
699733f6 | 5816 | char sym[16]; |
deb0e272 | 5817 | |
4dfe6ac6 NC |
5818 | if (htab == NULL) |
5819 | return FALSE; | |
5820 | ||
deb0e272 AM |
5821 | memcpy (sym, parm->name, len); |
5822 | sym[len + 2] = 0; | |
5823 | ||
5824 | for (i = parm->lo; i <= parm->hi; i++) | |
5825 | { | |
a4b6fadd | 5826 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5827 | |
5828 | sym[len + 0] = i / 10 + '0'; | |
5829 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 5830 | h = (struct ppc_link_hash_entry *) |
b32547cd | 5831 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 5832 | if (stub_sec != NULL) |
deb0e272 | 5833 | { |
a4b6fadd AM |
5834 | if (h != NULL |
5835 | && h->elf.root.type == bfd_link_hash_defined | |
5836 | && h->elf.root.u.def.section == htab->sfpr) | |
5837 | { | |
5838 | struct elf_link_hash_entry *s; | |
5839 | char buf[32]; | |
5840 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5841 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5842 | if (s == NULL) | |
5843 | return FALSE; | |
779f2ae7 | 5844 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
5845 | { |
5846 | s->root.type = bfd_link_hash_defined; | |
5847 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5848 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5849 | + h->elf.root.u.def.value); |
5850 | s->ref_regular = 1; | |
5851 | s->def_regular = 1; | |
5852 | s->ref_regular_nonweak = 1; | |
5853 | s->forced_local = 1; | |
5854 | s->non_elf = 0; | |
5855 | s->root.linker_def = 1; | |
5856 | } | |
5857 | } | |
5858 | continue; | |
5859 | } | |
5860 | if (h != NULL) | |
5861 | { | |
5862 | h->save_res = 1; | |
5863 | if (!h->elf.def_regular) | |
deb0e272 | 5864 | { |
a4b6fadd AM |
5865 | h->elf.root.type = bfd_link_hash_defined; |
5866 | h->elf.root.u.def.section = htab->sfpr; | |
5867 | h->elf.root.u.def.value = htab->sfpr->size; | |
5868 | h->elf.type = STT_FUNC; | |
5869 | h->elf.def_regular = 1; | |
b32547cd | 5870 | h->elf.non_elf = 0; |
a4b6fadd AM |
5871 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5872 | writing = TRUE; | |
deb0e272 | 5873 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5874 | { |
2cdcc330 AM |
5875 | htab->sfpr->contents |
5876 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5877 | if (htab->sfpr->contents == NULL) |
5878 | return FALSE; | |
5879 | } | |
deb0e272 AM |
5880 | } |
5881 | } | |
5882 | if (writing) | |
5883 | { | |
5884 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5885 | if (i != parm->hi) | |
5886 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5887 | else | |
5888 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5889 | htab->sfpr->size = p - htab->sfpr->contents; | |
5890 | } | |
5891 | } | |
5892 | ||
5893 | return TRUE; | |
5894 | } | |
5895 | ||
5896 | static bfd_byte * | |
5897 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5898 | { | |
5899 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5900 | return p + 4; | |
5901 | } | |
5902 | ||
5903 | static bfd_byte * | |
5904 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5905 | { | |
5906 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5907 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5908 | p = p + 4; |
5909 | bfd_put_32 (abfd, BLR, p); | |
5910 | return p + 4; | |
5911 | } | |
5912 | ||
5913 | static bfd_byte * | |
5914 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5915 | { | |
5916 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5917 | return p + 4; | |
5918 | } | |
5919 | ||
5920 | static bfd_byte * | |
5921 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5922 | { | |
a078d95a | 5923 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5924 | p = p + 4; |
5925 | p = restgpr0 (abfd, p, r); | |
5926 | bfd_put_32 (abfd, MTLR_R0, p); | |
5927 | p = p + 4; | |
5928 | if (r == 29) | |
5929 | { | |
5930 | p = restgpr0 (abfd, p, 30); | |
5931 | p = restgpr0 (abfd, p, 31); | |
5932 | } | |
5933 | bfd_put_32 (abfd, BLR, p); | |
5934 | return p + 4; | |
5935 | } | |
5936 | ||
5937 | static bfd_byte * | |
5938 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5939 | { | |
5940 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5941 | return p + 4; | |
5942 | } | |
5943 | ||
5944 | static bfd_byte * | |
5945 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5946 | { | |
5947 | p = savegpr1 (abfd, p, r); | |
5948 | bfd_put_32 (abfd, BLR, p); | |
5949 | return p + 4; | |
5950 | } | |
5951 | ||
5952 | static bfd_byte * | |
5953 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5954 | { | |
5955 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5956 | return p + 4; | |
5957 | } | |
5958 | ||
5959 | static bfd_byte * | |
5960 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5961 | { | |
5962 | p = restgpr1 (abfd, p, r); | |
5963 | bfd_put_32 (abfd, BLR, p); | |
5964 | return p + 4; | |
5965 | } | |
5966 | ||
5967 | static bfd_byte * | |
5968 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5969 | { | |
5970 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5971 | return p + 4; | |
5972 | } | |
5973 | ||
5974 | static bfd_byte * | |
5975 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5976 | { | |
5977 | p = savefpr (abfd, p, r); | |
a078d95a | 5978 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5979 | p = p + 4; |
5980 | bfd_put_32 (abfd, BLR, p); | |
5981 | return p + 4; | |
5982 | } | |
5983 | ||
5984 | static bfd_byte * | |
5985 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5986 | { | |
5987 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5988 | return p + 4; | |
5989 | } | |
5990 | ||
5991 | static bfd_byte * | |
5992 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5993 | { | |
a078d95a | 5994 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5995 | p = p + 4; |
5996 | p = restfpr (abfd, p, r); | |
5997 | bfd_put_32 (abfd, MTLR_R0, p); | |
5998 | p = p + 4; | |
5999 | if (r == 29) | |
6000 | { | |
6001 | p = restfpr (abfd, p, 30); | |
6002 | p = restfpr (abfd, p, 31); | |
6003 | } | |
6004 | bfd_put_32 (abfd, BLR, p); | |
6005 | return p + 4; | |
6006 | } | |
6007 | ||
6008 | static bfd_byte * | |
6009 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6010 | { | |
6011 | p = savefpr (abfd, p, r); | |
6012 | bfd_put_32 (abfd, BLR, p); | |
6013 | return p + 4; | |
6014 | } | |
6015 | ||
6016 | static bfd_byte * | |
6017 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6018 | { | |
6019 | p = restfpr (abfd, p, r); | |
6020 | bfd_put_32 (abfd, BLR, p); | |
6021 | return p + 4; | |
6022 | } | |
6023 | ||
6024 | static bfd_byte * | |
6025 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6026 | { | |
6027 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6028 | p = p + 4; | |
6029 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6030 | return p + 4; | |
6031 | } | |
6032 | ||
6033 | static bfd_byte * | |
6034 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6035 | { | |
6036 | p = savevr (abfd, p, r); | |
6037 | bfd_put_32 (abfd, BLR, p); | |
6038 | return p + 4; | |
6039 | } | |
6040 | ||
6041 | static bfd_byte * | |
6042 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6043 | { | |
6044 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6045 | p = p + 4; | |
6046 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6047 | return p + 4; | |
6048 | } | |
6049 | ||
6050 | static bfd_byte * | |
6051 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6052 | { | |
6053 | p = restvr (abfd, p, r); | |
6054 | bfd_put_32 (abfd, BLR, p); | |
6055 | return p + 4; | |
6056 | } | |
6057 | ||
e86ce104 AM |
6058 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6059 | information on function code symbol entries to their corresponding | |
6060 | function descriptor symbol entries. */ | |
deb0e272 | 6061 | |
b34976b6 | 6062 | static bfd_boolean |
4ce794b7 | 6063 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6064 | { |
e86ce104 | 6065 | struct bfd_link_info *info; |
65f38f15 | 6066 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6067 | struct ppc_link_hash_entry *fh; |
6068 | struct ppc_link_hash_entry *fdh; | |
6069 | bfd_boolean force_local; | |
5bd4f169 | 6070 | |
50bc7936 AM |
6071 | fh = (struct ppc_link_hash_entry *) h; |
6072 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6073 | return TRUE; |
e86ce104 | 6074 | |
8c5b4e52 AM |
6075 | if (!fh->is_func) |
6076 | return TRUE; | |
6077 | ||
6078 | if (fh->elf.root.root.string[0] != '.' | |
6079 | || fh->elf.root.root.string[1] == '\0') | |
6080 | return TRUE; | |
6081 | ||
4ce794b7 | 6082 | info = inf; |
65f38f15 | 6083 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6084 | if (htab == NULL) |
6085 | return FALSE; | |
5bd4f169 | 6086 | |
8c5b4e52 AM |
6087 | /* Find the corresponding function descriptor symbol. */ |
6088 | fdh = lookup_fdh (fh, htab); | |
6089 | ||
c09bdfe5 AM |
6090 | /* Resolve undefined references to dot-symbols as the value |
6091 | in the function descriptor, if we have one in a regular object. | |
6092 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6093 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6094 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6095 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6096 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6097 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6098 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6099 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6100 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6101 | &fh->elf.root.u.def.section, |
aef36ac1 | 6102 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6103 | { |
b31867b6 | 6104 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6105 | fh->elf.forced_local = 1; |
b31867b6 AM |
6106 | fh->elf.def_regular = fdh->elf.def_regular; |
6107 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6108 | } |
6109 | ||
8c5b4e52 AM |
6110 | if (!fh->elf.dynamic) |
6111 | { | |
6112 | struct plt_entry *ent; | |
5bd4f169 | 6113 | |
8c5b4e52 AM |
6114 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6115 | if (ent->plt.refcount > 0) | |
6116 | break; | |
6117 | if (ent == NULL) | |
6118 | return TRUE; | |
6119 | } | |
5bd4f169 | 6120 | |
8c5b4e52 | 6121 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6122 | if (fdh == NULL |
0e1862bb | 6123 | && !bfd_link_executable (info) |
50bc7936 AM |
6124 | && (fh->elf.root.type == bfd_link_hash_undefined |
6125 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6126 | { | |
908b32fc | 6127 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6128 | if (fdh == NULL) |
6129 | return FALSE; | |
50bc7936 | 6130 | } |
648cca2c | 6131 | |
8c5b4e52 | 6132 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6133 | if (fdh != NULL |
6134 | && fdh->fake | |
8c5b4e52 AM |
6135 | && (fh->elf.root.type == bfd_link_hash_defined |
6136 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6137 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6138 | |
8c5b4e52 AM |
6139 | /* Transfer dynamic linking information to the function descriptor. */ |
6140 | if (fdh != NULL) | |
6141 | { | |
f5385ebf AM |
6142 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6143 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6144 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6145 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6146 | fdh->elf.dynamic |= fh->elf.dynamic; |
6147 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6148 | || fh->elf.type == STT_FUNC | |
6149 | || fh->elf.type == STT_GNU_IFUNC); | |
6150 | move_plt_plist (fh, fdh); | |
6151 | ||
6152 | if (!fdh->elf.forced_local | |
6153 | && fh->elf.dynindx != -1) | |
6154 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6155 | return FALSE; | |
e86ce104 AM |
6156 | } |
6157 | ||
50bc7936 AM |
6158 | /* Now that the info is on the function descriptor, clear the |
6159 | function code sym info. Any function code syms for which we | |
6160 | don't have a definition in a regular file, we force local. | |
6161 | This prevents a shared library from exporting syms that have | |
6162 | been imported from another library. Function code syms that | |
6163 | are really in the library we must leave global to prevent the | |
6164 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6165 | force_local = (!fh->elf.def_regular |
6166 | || fdh == NULL | |
6167 | || !fdh->elf.def_regular | |
6168 | || fdh->elf.forced_local); | |
50bc7936 AM |
6169 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6170 | ||
b34976b6 | 6171 | return TRUE; |
e86ce104 | 6172 | } |
40b8271b | 6173 | |
a4b6fadd AM |
6174 | static const struct sfpr_def_parms save_res_funcs[] = |
6175 | { | |
6176 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6177 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6178 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6179 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6180 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6181 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6182 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6183 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6184 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6185 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6186 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6187 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6188 | }; | |
6189 | ||
e86ce104 | 6190 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6191 | this hook to a) provide some gcc support functions, and b) transfer |
6192 | dynamic linking information gathered so far on function code symbol | |
6193 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6194 | |
b34976b6 | 6195 | static bfd_boolean |
4ce794b7 AM |
6196 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6197 | struct bfd_link_info *info) | |
e86ce104 AM |
6198 | { |
6199 | struct ppc_link_hash_table *htab; | |
6200 | ||
6201 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6202 | if (htab == NULL) |
6203 | return FALSE; | |
6204 | ||
b32547cd AM |
6205 | /* Provide any missing _save* and _rest* functions. */ |
6206 | if (htab->sfpr != NULL) | |
6207 | { | |
6208 | unsigned int i; | |
6209 | ||
6210 | htab->sfpr->size = 0; | |
6211 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6212 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6213 | return FALSE; | |
6214 | if (htab->sfpr->size == 0) | |
6215 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6216 | } | |
6217 | ||
6218 | if (bfd_link_relocatable (info)) | |
6219 | return TRUE; | |
6220 | ||
6221 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6222 | { |
6223 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6224 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6225 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6226 | if (!htab->elf.hgot->def_regular |
6227 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6228 | { | |
6229 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6230 | htab->elf.hgot->root.u.def.value = 0; | |
6231 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6232 | htab->elf.hgot->def_regular = 1; | |
6233 | htab->elf.hgot->root.linker_def = 1; | |
6234 | } | |
dba6fa9b | 6235 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6236 | htab->elf.hgot->other |
6237 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6238 | } |
c66bb0ee | 6239 | |
8c5b4e52 AM |
6240 | if (htab->need_func_desc_adj) |
6241 | { | |
6242 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6243 | htab->need_func_desc_adj = 0; | |
6244 | } | |
805fc799 | 6245 | |
b34976b6 | 6246 | return TRUE; |
e86ce104 AM |
6247 | } |
6248 | ||
98bbb1b8 | 6249 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 6250 | |
98bbb1b8 | 6251 | static asection * |
a345bc8d AM |
6252 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
6253 | { | |
6254 | struct ppc_link_hash_entry *eh; | |
6255 | struct elf_dyn_relocs *p; | |
6256 | ||
6257 | eh = (struct ppc_link_hash_entry *) h; | |
6258 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6259 | { | |
6260 | asection *s = p->sec->output_section; | |
6261 | ||
6262 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 6263 | return p->sec; |
a345bc8d | 6264 | } |
98bbb1b8 | 6265 | return NULL; |
a345bc8d AM |
6266 | } |
6267 | ||
d311bc8b | 6268 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6269 | aliases, that apply to read-only sections. Cannot be used after |
6270 | size_dynamic_sections. */ | |
d311bc8b AM |
6271 | |
6272 | static bfd_boolean | |
6273 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6274 | { | |
6275 | struct ppc_link_hash_entry *eh; | |
6276 | ||
6277 | eh = (struct ppc_link_hash_entry *) h; | |
6278 | do | |
6279 | { | |
6280 | if (readonly_dynrelocs (&eh->elf)) | |
6281 | return TRUE; | |
ab2477e1 | 6282 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
2cdcc330 AM |
6283 | } |
6284 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6285 | |
6286 | return FALSE; | |
6287 | } | |
8a2058b5 | 6288 | |
8a9e8e72 AM |
6289 | /* Return whether EH has pc-relative dynamic relocs. */ |
6290 | ||
6291 | static bfd_boolean | |
6292 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6293 | { | |
6294 | struct elf_dyn_relocs *p; | |
6295 | ||
6296 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6297 | if (p->pc_count != 0) | |
6298 | return TRUE; | |
6299 | return FALSE; | |
6300 | } | |
6301 | ||
8a2058b5 AM |
6302 | /* Return true if a global entry stub will be created for H. Valid |
6303 | for ELFv2 before plt entries have been allocated. */ | |
6304 | ||
6305 | static bfd_boolean | |
6306 | global_entry_stub (struct elf_link_hash_entry *h) | |
6307 | { | |
6308 | struct plt_entry *pent; | |
6309 | ||
6310 | if (!h->pointer_equality_needed | |
6311 | || h->def_regular) | |
6312 | return FALSE; | |
6313 | ||
6314 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6315 | if (pent->plt.refcount > 0 | |
6316 | && pent->addend == 0) | |
6317 | return TRUE; | |
6318 | ||
6319 | return FALSE; | |
6320 | } | |
6321 | ||
e86ce104 AM |
6322 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6323 | regular object. The current definition is in some section of the | |
6324 | dynamic object, but we're not including those sections. We have to | |
6325 | change the definition to something the rest of the link can | |
6326 | understand. */ | |
6327 | ||
b34976b6 | 6328 | static bfd_boolean |
4ce794b7 AM |
6329 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6330 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6331 | { |
6332 | struct ppc_link_hash_table *htab; | |
5474d94f | 6333 | asection *s, *srel; |
e86ce104 AM |
6334 | |
6335 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6336 | if (htab == NULL) |
6337 | return FALSE; | |
e86ce104 AM |
6338 | |
6339 | /* Deal with function syms. */ | |
6340 | if (h->type == STT_FUNC | |
e054468f | 6341 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6342 | || h->needs_plt) |
e86ce104 | 6343 | { |
529fe20e AM |
6344 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
6345 | || SYMBOL_CALLS_LOCAL (info, h) | |
6346 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6347 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6348 | function symbol is local and not an ifunc. We keep dynamic | |
6349 | relocs for ifuncs when local rather than always emitting a | |
6350 | plt call stub for them and defining the symbol on the call | |
6351 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6352 | is defined on a descriptor, not code) and it can be faster at | |
6353 | run-time due to not needing to bounce through a stub. The | |
6354 | dyn_relocs for ifuncs will be applied even in a static | |
6355 | executable. */ | |
6356 | if (!bfd_link_pic (info) | |
6357 | && h->type != STT_GNU_IFUNC | |
6358 | && local) | |
6359 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6360 | ||
e86ce104 AM |
6361 | /* Clear procedure linkage table information for any symbol that |
6362 | won't need a .plt entry. */ | |
411e1bfb AM |
6363 | struct plt_entry *ent; |
6364 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6365 | if (ent->plt.refcount > 0) | |
6366 | break; | |
8387904d | 6367 | if (ent == NULL |
2d7ad24e AM |
6368 | || (h->type != STT_GNU_IFUNC |
6369 | && local | |
3e04d765 AM |
6370 | && (htab->can_convert_all_inline_plt |
6371 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
6372 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 6373 | { |
411e1bfb | 6374 | h->plt.plist = NULL; |
f5385ebf | 6375 | h->needs_plt = 0; |
d1eca1e4 | 6376 | h->pointer_equality_needed = 0; |
40b8271b | 6377 | } |
8a2058b5 | 6378 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6379 | { |
d1eca1e4 AM |
6380 | /* Taking a function's address in a read/write section |
6381 | doesn't require us to define the function symbol in the | |
6382 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6383 | be used instead. The reason we prefer a few more dynamic |
6384 | relocs is that calling via a global entry stub costs a | |
6385 | few more instructions, and pointer_equality_needed causes | |
6386 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6387 | if (global_entry_stub (h)) |
d1eca1e4 | 6388 | { |
ab2477e1 | 6389 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
6390 | { |
6391 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6392 | /* If we haven't seen a branch reloc and the symbol |
6393 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6394 | if (!h->needs_plt) |
6395 | h->plt.plist = NULL; | |
6396 | } | |
6397 | else if (!bfd_link_pic (info)) | |
6398 | /* We are going to be defining the function symbol on the | |
6399 | plt stub, so no dyn_relocs needed when non-pic. */ | |
6400 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
6401 | } |
6402 | ||
3988aed5 AM |
6403 | /* ELFv2 function symbols can't have copy relocs. */ |
6404 | return TRUE; | |
6405 | } | |
6406 | else if (!h->needs_plt | |
ab2477e1 | 6407 | && !readonly_dynrelocs (h)) |
3988aed5 | 6408 | { |
04383fd1 AM |
6409 | /* If we haven't seen a branch reloc and the symbol isn't an |
6410 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6411 | h->plt.plist = NULL; |
6412 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6413 | return TRUE; |
6414 | } | |
5bd4f169 | 6415 | } |
bbd7ec4a | 6416 | else |
411e1bfb | 6417 | h->plt.plist = NULL; |
5bd4f169 AM |
6418 | |
6419 | /* If this is a weak symbol, and there is a real definition, the | |
6420 | processor independent code will have arranged for us to see the | |
6421 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6422 | if (h->is_weakalias) |
5bd4f169 | 6423 | { |
60d67dc8 AM |
6424 | struct elf_link_hash_entry *def = weakdef (h); |
6425 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6426 | h->root.u.def.section = def->root.u.def.section; | |
6427 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6428 | if (def->root.u.def.section == htab->elf.sdynbss |
6429 | || def->root.u.def.section == htab->elf.sdynrelro) | |
6430 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 6431 | return TRUE; |
5bd4f169 AM |
6432 | } |
6433 | ||
5bd4f169 AM |
6434 | /* If we are creating a shared library, we must presume that the |
6435 | only references to the symbol are via the global offset table. | |
6436 | For such cases we need not do anything here; the relocations will | |
6437 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6438 | if (!bfd_link_executable (info)) |
b34976b6 | 6439 | return TRUE; |
5bd4f169 | 6440 | |
65f38f15 AM |
6441 | /* If there are no references to this symbol that do not use the |
6442 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6443 | if (!h->non_got_ref) |
b34976b6 | 6444 | return TRUE; |
65f38f15 | 6445 | |
b186458a | 6446 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6447 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6448 | |
d93d1c80 AM |
6449 | /* If -z nocopyreloc was given, don't generate them either. */ |
6450 | || info->nocopyreloc | |
a127494f | 6451 | |
dce2246a | 6452 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6453 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6454 | || (ELIMINATE_COPY_RELOCS |
6455 | && !h->needs_copy | |
6456 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6457 | |
d93d1c80 AM |
6458 | /* Protected variables do not work with .dynbss. The copy in |
6459 | .dynbss won't be used by the shared library with the protected | |
6460 | definition for the variable. Text relocations are preferable | |
6461 | to an incorrect program. */ | |
6462 | || h->protected_def) | |
529fe20e | 6463 | return TRUE; |
a127494f | 6464 | |
e1c6cf61 AM |
6465 | if (h->type == STT_FUNC |
6466 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6467 | { |
e1c6cf61 AM |
6468 | /* .dynbss copies of function symbols only work if we have |
6469 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6470 | use dot-symbols and set the function symbol size to the text | |
6471 | size of the function rather than the size of the descriptor. | |
6472 | That's wrong for copying a descriptor. */ | |
6473 | if (((struct ppc_link_hash_entry *) h)->oh == NULL | |
6474 | || !(h->size == 24 || h->size == 16)) | |
6475 | return TRUE; | |
6476 | ||
6477 | /* We should never get here, but unfortunately there are old | |
6478 | versions of gcc (circa gcc-3.2) that improperly for the | |
6479 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6480 | suchlike in read-only sections. Allow them to proceed, but | |
6481 | warn that this might break at runtime. */ | |
25f53a85 | 6482 | info->callbacks->einfo |
c1c8c1ef | 6483 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6484 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6485 | h->root.root.string); |
6486 | } | |
5d35169e AM |
6487 | |
6488 | /* This is a reference to a symbol defined by a dynamic object which | |
6489 | is not a function. */ | |
6490 | ||
5bd4f169 AM |
6491 | /* We must allocate the symbol in our .dynbss section, which will |
6492 | become part of the .bss section of the executable. There will be | |
6493 | an entry for this symbol in the .dynsym section. The dynamic | |
6494 | object will contain position independent code, so all references | |
6495 | from the dynamic object to this symbol will go through the global | |
6496 | offset table. The dynamic linker will use the .dynsym entry to | |
6497 | determine the address it must put in the global offset table, so | |
6498 | both the dynamic object and the regular object will refer to the | |
6499 | same memory location for the variable. */ | |
5474d94f AM |
6500 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6501 | { | |
6502 | s = htab->elf.sdynrelro; | |
6503 | srel = htab->elf.sreldynrelro; | |
6504 | } | |
6505 | else | |
6506 | { | |
6507 | s = htab->elf.sdynbss; | |
6508 | srel = htab->elf.srelbss; | |
6509 | } | |
1d7e9d18 | 6510 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6511 | { |
4a7e5234 AM |
6512 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6513 | linker to copy the initial value out of the dynamic object | |
6514 | and into the runtime process image. */ | |
5474d94f | 6515 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6516 | h->needs_copy = 1; |
5bd4f169 AM |
6517 | } |
6518 | ||
529fe20e AM |
6519 | /* We no longer want dyn_relocs. */ |
6520 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 6521 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6522 | } |
6523 | ||
e86ce104 AM |
6524 | /* If given a function descriptor symbol, hide both the function code |
6525 | sym and the descriptor. */ | |
6526 | static void | |
4ce794b7 AM |
6527 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6528 | struct elf_link_hash_entry *h, | |
6529 | bfd_boolean force_local) | |
e86ce104 | 6530 | { |
34814b9f | 6531 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6532 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6533 | ||
87469ba2 AM |
6534 | if (ppc_hash_table (info) == NULL) |
6535 | return; | |
6536 | ||
34814b9f AM |
6537 | eh = (struct ppc_link_hash_entry *) h; |
6538 | if (eh->is_func_descriptor) | |
e86ce104 | 6539 | { |
34814b9f | 6540 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6541 | |
721956f4 | 6542 | if (fh == NULL) |
d1329ca3 AM |
6543 | { |
6544 | const char *p, *q; | |
b8ac2841 | 6545 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6546 | char save; |
6547 | ||
6548 | /* We aren't supposed to use alloca in BFD because on | |
6549 | systems which do not have alloca the version in libiberty | |
6550 | calls xmalloc, which might cause the program to crash | |
6551 | when it runs out of memory. This function doesn't have a | |
6552 | return status, so there's no way to gracefully return an | |
6553 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6554 | accessed; It's either a string in an ELF string table, |
6555 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6556 | |
34814b9f | 6557 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6558 | save = *p; |
6559 | *(char *) p = '.'; | |
34814b9f | 6560 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 6561 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6562 | *(char *) p = save; |
6563 | ||
6564 | /* Unfortunately, if it so happens that the string we were | |
6565 | looking for was allocated immediately before this string, | |
6566 | then we overwrote the string terminator. That's the only | |
6567 | reason the lookup should fail. */ | |
6568 | if (fh == NULL) | |
6569 | { | |
34814b9f AM |
6570 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6571 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6572 | --q, --p; |
34814b9f AM |
6573 | if (q < eh->elf.root.root.string && *p == '.') |
6574 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 6575 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6576 | } |
6577 | if (fh != NULL) | |
6578 | { | |
34814b9f AM |
6579 | eh->oh = fh; |
6580 | fh->oh = eh; | |
d1329ca3 AM |
6581 | } |
6582 | } | |
e86ce104 | 6583 | if (fh != NULL) |
34814b9f | 6584 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6585 | } |
6586 | } | |
6587 | ||
411e1bfb | 6588 | static bfd_boolean |
8843416a AM |
6589 | get_sym_h (struct elf_link_hash_entry **hp, |
6590 | Elf_Internal_Sym **symp, | |
6591 | asection **symsecp, | |
f961d9dd | 6592 | unsigned char **tls_maskp, |
8843416a AM |
6593 | Elf_Internal_Sym **locsymsp, |
6594 | unsigned long r_symndx, | |
6595 | bfd *ibfd) | |
411e1bfb | 6596 | { |
0ffa91dd | 6597 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6598 | |
6599 | if (r_symndx >= symtab_hdr->sh_info) | |
6600 | { | |
6601 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6602 | struct elf_link_hash_entry *h; | |
6603 | ||
6604 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6605 | h = elf_follow_link (h); |
411e1bfb AM |
6606 | |
6607 | if (hp != NULL) | |
6608 | *hp = h; | |
6609 | ||
6610 | if (symp != NULL) | |
6611 | *symp = NULL; | |
6612 | ||
6613 | if (symsecp != NULL) | |
6614 | { | |
6615 | asection *symsec = NULL; | |
6616 | if (h->root.type == bfd_link_hash_defined | |
6617 | || h->root.type == bfd_link_hash_defweak) | |
6618 | symsec = h->root.u.def.section; | |
6619 | *symsecp = symsec; | |
6620 | } | |
6621 | ||
e7b938ca | 6622 | if (tls_maskp != NULL) |
411e1bfb AM |
6623 | { |
6624 | struct ppc_link_hash_entry *eh; | |
6625 | ||
6626 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6627 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6628 | } |
6629 | } | |
6630 | else | |
6631 | { | |
6632 | Elf_Internal_Sym *sym; | |
6633 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6634 | ||
6635 | if (locsyms == NULL) | |
6636 | { | |
6637 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6638 | if (locsyms == NULL) | |
6639 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6640 | symtab_hdr->sh_info, | |
6641 | 0, NULL, NULL, NULL); | |
6642 | if (locsyms == NULL) | |
6643 | return FALSE; | |
6644 | *locsymsp = locsyms; | |
6645 | } | |
6646 | sym = locsyms + r_symndx; | |
6647 | ||
6648 | if (hp != NULL) | |
6649 | *hp = NULL; | |
6650 | ||
6651 | if (symp != NULL) | |
6652 | *symp = sym; | |
6653 | ||
6654 | if (symsecp != NULL) | |
cb33740c | 6655 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6656 | |
e7b938ca | 6657 | if (tls_maskp != NULL) |
411e1bfb AM |
6658 | { |
6659 | struct got_entry **lgot_ents; | |
f961d9dd | 6660 | unsigned char *tls_mask; |
411e1bfb | 6661 | |
e7b938ca | 6662 | tls_mask = NULL; |
411e1bfb AM |
6663 | lgot_ents = elf_local_got_ents (ibfd); |
6664 | if (lgot_ents != NULL) | |
6665 | { | |
e054468f AM |
6666 | struct plt_entry **local_plt = (struct plt_entry **) |
6667 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6668 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6669 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6670 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6671 | } |
e7b938ca | 6672 | *tls_maskp = tls_mask; |
411e1bfb AM |
6673 | } |
6674 | } | |
6675 | return TRUE; | |
6676 | } | |
6677 | ||
e7b938ca | 6678 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6679 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6680 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6681 | |
6682 | static int | |
f961d9dd | 6683 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6684 | unsigned long *toc_symndx, |
6685 | bfd_vma *toc_addend, | |
0d4792f7 | 6686 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6687 | const Elf_Internal_Rela *rel, |
6688 | bfd *ibfd) | |
411e1bfb AM |
6689 | { |
6690 | unsigned long r_symndx; | |
0d4792f7 | 6691 | int next_r; |
411e1bfb AM |
6692 | struct elf_link_hash_entry *h; |
6693 | Elf_Internal_Sym *sym; | |
6694 | asection *sec; | |
6695 | bfd_vma off; | |
6696 | ||
6697 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6698 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6699 | return 0; |
411e1bfb | 6700 | |
37da22e5 AM |
6701 | if ((*tls_maskp != NULL |
6702 | && (**tls_maskp & TLS_TLS) != 0 | |
6703 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6704 | || sec == NULL |
6bee8834 | 6705 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6706 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6707 | return 1; |
411e1bfb AM |
6708 | |
6709 | /* Look inside a TOC section too. */ | |
6710 | if (h != NULL) | |
6711 | { | |
6712 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6713 | off = h->root.u.def.value; | |
6714 | } | |
6715 | else | |
6716 | off = sym->st_value; | |
6717 | off += rel->r_addend; | |
6718 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6719 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6720 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6721 | if (toc_symndx != NULL) |
6722 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6723 | if (toc_addend != NULL) |
6724 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6725 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6726 | return 0; | |
854b41e7 | 6727 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6728 | && (next_r == -1 || next_r == -2)) |
6729 | return 1 - next_r; | |
951fd09b | 6730 | return 1; |
411e1bfb AM |
6731 | } |
6732 | ||
3b421ab3 AM |
6733 | /* Find (or create) an entry in the tocsave hash table. */ |
6734 | ||
6735 | static struct tocsave_entry * | |
6736 | tocsave_find (struct ppc_link_hash_table *htab, | |
6737 | enum insert_option insert, | |
6738 | Elf_Internal_Sym **local_syms, | |
6739 | const Elf_Internal_Rela *irela, | |
6740 | bfd *ibfd) | |
6741 | { | |
6742 | unsigned long r_indx; | |
6743 | struct elf_link_hash_entry *h; | |
6744 | Elf_Internal_Sym *sym; | |
6745 | struct tocsave_entry ent, *p; | |
6746 | hashval_t hash; | |
6747 | struct tocsave_entry **slot; | |
6748 | ||
6749 | r_indx = ELF64_R_SYM (irela->r_info); | |
6750 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6751 | return NULL; | |
6752 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6753 | { | |
4eca0228 | 6754 | _bfd_error_handler |
871b3ab2 | 6755 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6756 | return NULL; |
6757 | } | |
6758 | ||
6759 | if (h != NULL) | |
6760 | ent.offset = h->root.u.def.value; | |
6761 | else | |
6762 | ent.offset = sym->st_value; | |
6763 | ent.offset += irela->r_addend; | |
6764 | ||
6765 | hash = tocsave_htab_hash (&ent); | |
6766 | slot = ((struct tocsave_entry **) | |
6767 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6768 | if (slot == NULL) | |
6769 | return NULL; | |
6770 | ||
6771 | if (*slot == NULL) | |
6772 | { | |
6773 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6774 | if (p == NULL) | |
6775 | return NULL; | |
6776 | *p = ent; | |
6777 | *slot = p; | |
6778 | } | |
6779 | return *slot; | |
6780 | } | |
6781 | ||
754021d0 | 6782 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6783 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6784 | |
6785 | static bfd_boolean | |
6786 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6787 | { | |
6788 | struct ppc_link_hash_entry *eh; | |
6789 | asection *sym_sec; | |
74f0fb50 | 6790 | struct _opd_sec_data *opd; |
754021d0 AM |
6791 | |
6792 | if (h->root.type == bfd_link_hash_indirect) | |
6793 | return TRUE; | |
6794 | ||
754021d0 AM |
6795 | if (h->root.type != bfd_link_hash_defined |
6796 | && h->root.type != bfd_link_hash_defweak) | |
6797 | return TRUE; | |
6798 | ||
6799 | eh = (struct ppc_link_hash_entry *) h; | |
6800 | if (eh->adjust_done) | |
6801 | return TRUE; | |
6802 | ||
6803 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6804 | opd = get_opd_info (sym_sec); |
6805 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6806 | { |
51aecdc5 | 6807 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6808 | if (adjust == -1) |
6809 | { | |
6810 | /* This entry has been deleted. */ | |
b3fac117 | 6811 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6812 | if (dsec == NULL) |
6813 | { | |
6814 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6815 | if (discarded_section (dsec)) |
81688140 | 6816 | { |
b3fac117 | 6817 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6818 | break; |
6819 | } | |
6820 | } | |
4025353c | 6821 | eh->elf.root.u.def.value = 0; |
81688140 | 6822 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6823 | } |
6824 | else | |
6825 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6826 | eh->adjust_done = 1; |
6827 | } | |
6828 | return TRUE; | |
6829 | } | |
6830 | ||
8c1d1bb8 | 6831 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6832 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6833 | have already been determined. */ |
6834 | ||
6835 | static bfd_boolean | |
6836 | dec_dynrel_count (bfd_vma r_info, | |
6837 | asection *sec, | |
6838 | struct bfd_link_info *info, | |
6839 | Elf_Internal_Sym **local_syms, | |
6840 | struct elf_link_hash_entry *h, | |
19e08130 | 6841 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6842 | { |
6843 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6844 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6845 | |
6846 | /* Can this reloc be dynamic? This switch, and later tests here | |
6847 | should be kept in sync with the code in check_relocs. */ | |
6848 | r_type = ELF64_R_TYPE (r_info); | |
6849 | switch (r_type) | |
6850 | { | |
6851 | default: | |
6852 | return TRUE; | |
6853 | ||
1bdd8fac AM |
6854 | case R_PPC64_TOC16: |
6855 | case R_PPC64_TOC16_DS: | |
6856 | case R_PPC64_TOC16_LO: | |
6857 | case R_PPC64_TOC16_HI: | |
6858 | case R_PPC64_TOC16_HA: | |
6859 | case R_PPC64_TOC16_LO_DS: | |
6860 | if (h == NULL) | |
6861 | return TRUE; | |
6862 | break; | |
6863 | ||
8c1d1bb8 AM |
6864 | case R_PPC64_TPREL16: |
6865 | case R_PPC64_TPREL16_LO: | |
6866 | case R_PPC64_TPREL16_HI: | |
6867 | case R_PPC64_TPREL16_HA: | |
6868 | case R_PPC64_TPREL16_DS: | |
6869 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6870 | case R_PPC64_TPREL16_HIGH: |
6871 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6872 | case R_PPC64_TPREL16_HIGHER: |
6873 | case R_PPC64_TPREL16_HIGHERA: | |
6874 | case R_PPC64_TPREL16_HIGHEST: | |
6875 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 6876 | case R_PPC64_TPREL64: |
c213164a | 6877 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
6878 | case R_PPC64_DTPMOD64: |
6879 | case R_PPC64_DTPREL64: | |
6880 | case R_PPC64_ADDR64: | |
6881 | case R_PPC64_REL30: | |
6882 | case R_PPC64_REL32: | |
6883 | case R_PPC64_REL64: | |
6884 | case R_PPC64_ADDR14: | |
6885 | case R_PPC64_ADDR14_BRNTAKEN: | |
6886 | case R_PPC64_ADDR14_BRTAKEN: | |
6887 | case R_PPC64_ADDR16: | |
6888 | case R_PPC64_ADDR16_DS: | |
6889 | case R_PPC64_ADDR16_HA: | |
6890 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
6891 | case R_PPC64_ADDR16_HIGH: |
6892 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
6893 | case R_PPC64_ADDR16_HIGHER: |
6894 | case R_PPC64_ADDR16_HIGHERA: | |
6895 | case R_PPC64_ADDR16_HIGHEST: | |
6896 | case R_PPC64_ADDR16_HIGHESTA: | |
6897 | case R_PPC64_ADDR16_LO: | |
6898 | case R_PPC64_ADDR16_LO_DS: | |
6899 | case R_PPC64_ADDR24: | |
6900 | case R_PPC64_ADDR32: | |
6901 | case R_PPC64_UADDR16: | |
6902 | case R_PPC64_UADDR32: | |
6903 | case R_PPC64_UADDR64: | |
6904 | case R_PPC64_TOC: | |
5663e321 AM |
6905 | case R_PPC64_D34: |
6906 | case R_PPC64_D34_LO: | |
6907 | case R_PPC64_D34_HI30: | |
6908 | case R_PPC64_D34_HA30: | |
6909 | case R_PPC64_ADDR16_HIGHER34: | |
6910 | case R_PPC64_ADDR16_HIGHERA34: | |
6911 | case R_PPC64_ADDR16_HIGHEST34: | |
6912 | case R_PPC64_ADDR16_HIGHESTA34: | |
6913 | case R_PPC64_D28: | |
8c1d1bb8 AM |
6914 | break; |
6915 | } | |
6916 | ||
6917 | if (local_syms != NULL) | |
6918 | { | |
6919 | unsigned long r_symndx; | |
8c1d1bb8 AM |
6920 | bfd *ibfd = sec->owner; |
6921 | ||
6922 | r_symndx = ELF64_R_SYM (r_info); | |
6923 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6924 | return FALSE; | |
6925 | } | |
6926 | ||
ec73ddcd AM |
6927 | if ((h != NULL |
6928 | && (h->root.type == bfd_link_hash_defweak | |
6929 | || !h->def_regular)) | |
6930 | || (h != NULL | |
6931 | && !bfd_link_executable (info) | |
6932 | && !SYMBOLIC_BIND (info, h)) | |
6933 | || (bfd_link_pic (info) | |
6934 | && must_be_dyn_reloc (info, r_type)) | |
6935 | || (!bfd_link_pic (info) | |
6936 | && (h != NULL | |
6937 | ? h->type == STT_GNU_IFUNC | |
6938 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
6939 | ; |
6940 | else | |
6941 | return TRUE; | |
6942 | ||
6943 | if (h != NULL) | |
6edfbbad | 6944 | { |
19e08130 AM |
6945 | struct elf_dyn_relocs *p; |
6946 | struct elf_dyn_relocs **pp; | |
6947 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6948 | ||
6949 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6950 | with local syms for a given section. Also, symbol flags are | |
6951 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
6952 | report a dynreloc miscount. */ | |
6953 | if (*pp == NULL && info->gc_sections) | |
6954 | return TRUE; | |
6955 | ||
6956 | while ((p = *pp) != NULL) | |
60124e18 | 6957 | { |
19e08130 AM |
6958 | if (p->sec == sec) |
6959 | { | |
6960 | if (!must_be_dyn_reloc (info, r_type)) | |
6961 | p->pc_count -= 1; | |
6962 | p->count -= 1; | |
6963 | if (p->count == 0) | |
6964 | *pp = p->next; | |
6965 | return TRUE; | |
6966 | } | |
6967 | pp = &p->next; | |
60124e18 | 6968 | } |
6edfbbad | 6969 | } |
19e08130 AM |
6970 | else |
6971 | { | |
6972 | struct ppc_dyn_relocs *p; | |
6973 | struct ppc_dyn_relocs **pp; | |
6974 | void *vpp; | |
6975 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 6976 | |
19e08130 AM |
6977 | if (local_syms == NULL) |
6978 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
6979 | if (sym_sec == NULL) | |
6980 | sym_sec = sec; | |
c57da1a7 | 6981 | |
19e08130 AM |
6982 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
6983 | pp = (struct ppc_dyn_relocs **) vpp; | |
6984 | ||
6985 | if (*pp == NULL && info->gc_sections) | |
6986 | return TRUE; | |
6987 | ||
6988 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
6989 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 6990 | { |
19e08130 AM |
6991 | if (p->sec == sec && p->ifunc == is_ifunc) |
6992 | { | |
6993 | p->count -= 1; | |
6994 | if (p->count == 0) | |
6995 | *pp = p->next; | |
6996 | return TRUE; | |
6997 | } | |
6998 | pp = &p->next; | |
8c1d1bb8 | 6999 | } |
8c1d1bb8 AM |
7000 | } |
7001 | ||
695344c0 | 7002 | /* xgettext:c-format */ |
cf97bcb0 AM |
7003 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7004 | sec->owner, sec); | |
8c1d1bb8 AM |
7005 | bfd_set_error (bfd_error_bad_value); |
7006 | return FALSE; | |
7007 | } | |
7008 | ||
754021d0 AM |
7009 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7010 | only remove those associated with functions in discarded link-once | |
7011 | sections, or weakly defined functions that have been overridden. It | |
7012 | would be possible to remove many more entries for statically linked | |
7013 | applications. */ | |
7014 | ||
b34976b6 | 7015 | bfd_boolean |
e7d1c40c | 7016 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7017 | { |
7018 | bfd *ibfd; | |
754021d0 | 7019 | bfd_boolean some_edited = FALSE; |
3f764659 | 7020 | asection *need_pad = NULL; |
e7d1c40c AM |
7021 | struct ppc_link_hash_table *htab; |
7022 | ||
7023 | htab = ppc_hash_table (info); | |
7024 | if (htab == NULL) | |
7025 | return FALSE; | |
1e2f5b6e | 7026 | |
c72f2fb2 | 7027 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7028 | { |
7029 | asection *sec; | |
7030 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7031 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7032 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7033 | struct _opd_sec_data *opd; |
51aecdc5 | 7034 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7035 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7036 | |
854b41e7 AM |
7037 | if (!is_ppc64_elf (ibfd)) |
7038 | continue; | |
7039 | ||
1e2f5b6e | 7040 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7041 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7042 | continue; |
7043 | ||
dbaa2011 | 7044 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7045 | continue; |
7046 | ||
1e2f5b6e AM |
7047 | if (sec->output_section == bfd_abs_section_ptr) |
7048 | continue; | |
7049 | ||
7050 | /* Look through the section relocs. */ | |
7051 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7052 | continue; | |
7053 | ||
6cdc0ccc | 7054 | local_syms = NULL; |
0ffa91dd | 7055 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7056 | |
7057 | /* Read the relocations. */ | |
4ce794b7 | 7058 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7059 | info->keep_memory); |
1e2f5b6e | 7060 | if (relstart == NULL) |
b34976b6 | 7061 | return FALSE; |
1e2f5b6e AM |
7062 | |
7063 | /* First run through the relocs to check they are sane, and to | |
7064 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7065 | need_edit = FALSE; |
51aecdc5 | 7066 | broken = FALSE; |
3f764659 | 7067 | need_pad = sec; |
1e2f5b6e | 7068 | relend = relstart + sec->reloc_count; |
50bc7936 | 7069 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7070 | { |
04c9666a | 7071 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7072 | unsigned long r_symndx; |
7073 | asection *sym_sec; | |
7074 | struct elf_link_hash_entry *h; | |
7075 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7076 | bfd_vma offset; |
1e2f5b6e | 7077 | |
51aecdc5 | 7078 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7079 | only interested in the reloc pointing to a function entry |
7080 | point. */ | |
51aecdc5 AM |
7081 | offset = rel->r_offset; |
7082 | if (rel + 1 == relend | |
7083 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7084 | { |
7085 | /* If someone messes with .opd alignment then after a | |
7086 | "ld -r" we might have padding in the middle of .opd. | |
7087 | Also, there's nothing to prevent someone putting | |
7088 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7089 | optimization for them! */ |
3f764659 | 7090 | broken_opd: |
4eca0228 | 7091 | _bfd_error_handler |
871b3ab2 | 7092 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7093 | broken = TRUE; |
1e2f5b6e AM |
7094 | break; |
7095 | } | |
7096 | ||
50bc7936 AM |
7097 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7098 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7099 | { | |
4eca0228 | 7100 | _bfd_error_handler |
695344c0 | 7101 | /* xgettext:c-format */ |
871b3ab2 | 7102 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7103 | ibfd, r_type); |
51aecdc5 | 7104 | broken = TRUE; |
50bc7936 AM |
7105 | break; |
7106 | } | |
7107 | ||
1e2f5b6e | 7108 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7109 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7110 | r_symndx, ibfd)) | |
50bc7936 | 7111 | goto error_ret; |
1e2f5b6e AM |
7112 | |
7113 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7114 | { | |
411e1bfb AM |
7115 | const char *sym_name; |
7116 | if (h != NULL) | |
7117 | sym_name = h->root.root.string; | |
7118 | else | |
26c61ae5 L |
7119 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7120 | sym_sec); | |
411e1bfb | 7121 | |
4eca0228 | 7122 | _bfd_error_handler |
695344c0 | 7123 | /* xgettext:c-format */ |
871b3ab2 | 7124 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7125 | ibfd, sym_name); |
51aecdc5 | 7126 | broken = TRUE; |
1e2f5b6e AM |
7127 | break; |
7128 | } | |
7129 | ||
51020317 AM |
7130 | /* opd entries are always for functions defined in the |
7131 | current input bfd. If the symbol isn't defined in the | |
7132 | input bfd, then we won't be using the function in this | |
7133 | bfd; It must be defined in a linkonce section in another | |
7134 | bfd, or is weak. It's also possible that we are | |
7135 | discarding the function due to a linker script /DISCARD/, | |
7136 | which we test for via the output_section. */ | |
7137 | if (sym_sec->owner != ibfd | |
7138 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7139 | need_edit = TRUE; |
1e2f5b6e | 7140 | |
50bc7936 | 7141 | rel += 2; |
51aecdc5 AM |
7142 | if (rel + 1 == relend |
7143 | || (rel + 2 < relend | |
7144 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7145 | ++rel; | |
7146 | ||
7147 | if (rel == relend) | |
3f764659 JJ |
7148 | { |
7149 | if (sec->size == offset + 24) | |
7150 | { | |
7151 | need_pad = NULL; | |
7152 | break; | |
7153 | } | |
51aecdc5 | 7154 | if (sec->size == offset + 16) |
3f764659 JJ |
7155 | { |
7156 | cnt_16b++; | |
7157 | break; | |
7158 | } | |
7159 | goto broken_opd; | |
7160 | } | |
3f764659 JJ |
7161 | else if (rel + 1 < relend |
7162 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7163 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7164 | { | |
51aecdc5 AM |
7165 | if (rel[0].r_offset == offset + 16) |
7166 | cnt_16b++; | |
7167 | else if (rel[0].r_offset != offset + 24) | |
7168 | goto broken_opd; | |
3f764659 JJ |
7169 | } |
7170 | else | |
7171 | goto broken_opd; | |
1e2f5b6e AM |
7172 | } |
7173 | ||
e7d1c40c | 7174 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7175 | |
51aecdc5 | 7176 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7177 | { |
7178 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7179 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7180 | bfd_byte *rptr, *wptr; |
983bddc8 | 7181 | bfd_byte *new_contents; |
74f0fb50 AM |
7182 | bfd_size_type amt; |
7183 | ||
983bddc8 | 7184 | new_contents = NULL; |
51aecdc5 | 7185 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7186 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7187 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7188 | if (opd->adjust == NULL) |
7189 | return FALSE; | |
1e2f5b6e AM |
7190 | |
7191 | /* This seems a waste of time as input .opd sections are all | |
7192 | zeros as generated by gcc, but I suppose there's no reason | |
7193 | this will always be so. We might start putting something in | |
7194 | the third word of .opd entries. */ | |
7195 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7196 | { | |
eea6121a AM |
7197 | bfd_byte *loc; |
7198 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7199 | { |
eea6121a AM |
7200 | if (loc != NULL) |
7201 | free (loc); | |
50bc7936 | 7202 | error_ret: |
6cdc0ccc AM |
7203 | if (local_syms != NULL |
7204 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7205 | free (local_syms); | |
6cdc0ccc AM |
7206 | if (elf_section_data (sec)->relocs != relstart) |
7207 | free (relstart); | |
b34976b6 | 7208 | return FALSE; |
6cdc0ccc | 7209 | } |
1e2f5b6e AM |
7210 | sec->contents = loc; |
7211 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7212 | } | |
7213 | ||
7214 | elf_section_data (sec)->relocs = relstart; | |
7215 | ||
3f764659 | 7216 | new_contents = sec->contents; |
3f764659 JJ |
7217 | if (add_aux_fields) |
7218 | { | |
7219 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7220 | if (new_contents == NULL) | |
7221 | return FALSE; | |
51aecdc5 | 7222 | need_pad = NULL; |
3f764659 | 7223 | } |
b4f4e59f AM |
7224 | wptr = new_contents; |
7225 | rptr = sec->contents; | |
1e2f5b6e | 7226 | write_rel = relstart; |
51aecdc5 | 7227 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7228 | { |
50bc7936 AM |
7229 | unsigned long r_symndx; |
7230 | asection *sym_sec; | |
7231 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7232 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7233 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7234 | long opd_ent_size; |
7235 | Elf_Internal_Rela *next_rel; | |
7236 | bfd_boolean skip; | |
50bc7936 AM |
7237 | |
7238 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7239 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7240 | r_symndx, ibfd)) |
50bc7936 AM |
7241 | goto error_ret; |
7242 | ||
51aecdc5 AM |
7243 | next_rel = rel + 2; |
7244 | if (next_rel + 1 == relend | |
7245 | || (next_rel + 2 < relend | |
7246 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7247 | ++next_rel; | |
7248 | ||
7249 | /* See if the .opd entry is full 24 byte or | |
7250 | 16 byte (with fd_aux entry overlapped with next | |
7251 | fd_func). */ | |
7252 | opd_ent_size = 24; | |
7253 | if (next_rel == relend) | |
1e2f5b6e | 7254 | { |
51aecdc5 | 7255 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7256 | opd_ent_size = 16; |
51aecdc5 AM |
7257 | } |
7258 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7259 | opd_ent_size = 16; | |
3f764659 | 7260 | |
51aecdc5 AM |
7261 | if (h != NULL |
7262 | && h->root.root.string[0] == '.') | |
7263 | { | |
8c5b4e52 AM |
7264 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
7265 | if (fdh != NULL) | |
7266 | { | |
7267 | fdh = ppc_follow_link (fdh); | |
7268 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7269 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7270 | fdh = NULL; | |
7271 | } | |
51aecdc5 | 7272 | } |
1e2f5b6e | 7273 | |
51aecdc5 AM |
7274 | skip = (sym_sec->owner != ibfd |
7275 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7276 | if (skip) | |
7277 | { | |
7278 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7279 | { |
51aecdc5 AM |
7280 | /* Arrange for the function descriptor sym |
7281 | to be dropped. */ | |
7282 | fdh->elf.root.u.def.value = 0; | |
7283 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7284 | } |
51aecdc5 | 7285 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7286 | |
0e1862bb | 7287 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7288 | rel = next_rel; |
7289 | else | |
7290 | while (1) | |
7291 | { | |
7292 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7293 | NULL, h, sym)) | |
7294 | goto error_ret; | |
754021d0 | 7295 | |
51aecdc5 AM |
7296 | if (++rel == next_rel) |
7297 | break; | |
1e2f5b6e | 7298 | |
51aecdc5 AM |
7299 | r_symndx = ELF64_R_SYM (rel->r_info); |
7300 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7301 | r_symndx, ibfd)) | |
7302 | goto error_ret; | |
7303 | } | |
50bc7936 AM |
7304 | } |
7305 | else | |
1e2f5b6e | 7306 | { |
51aecdc5 AM |
7307 | /* We'll be keeping this opd entry. */ |
7308 | long adjust; | |
7309 | ||
7310 | if (fdh != NULL) | |
7311 | { | |
7312 | /* Redefine the function descriptor symbol to | |
7313 | this location in the opd section. It is | |
7314 | necessary to update the value here rather | |
7315 | than using an array of adjustments as we do | |
7316 | for local symbols, because various places | |
7317 | in the generic ELF code use the value | |
7318 | stored in u.def.value. */ | |
7319 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7320 | fdh->adjust_done = 1; | |
7321 | } | |
7322 | ||
7323 | /* Local syms are a bit tricky. We could | |
7324 | tweak them as they can be cached, but | |
7325 | we'd need to look through the local syms | |
7326 | for the function descriptor sym which we | |
7327 | don't have at the moment. So keep an | |
7328 | array of adjustments. */ | |
7329 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7330 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7331 | ||
7332 | if (wptr != rptr) | |
7333 | memcpy (wptr, rptr, opd_ent_size); | |
7334 | wptr += opd_ent_size; | |
7335 | if (add_aux_fields && opd_ent_size == 16) | |
7336 | { | |
7337 | memset (wptr, '\0', 8); | |
7338 | wptr += 8; | |
7339 | } | |
7340 | ||
50bc7936 | 7341 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7342 | new opd entries. */ |
7343 | for ( ; rel != next_rel; ++rel) | |
7344 | { | |
7345 | rel->r_offset += adjust; | |
7346 | if (write_rel != rel) | |
7347 | memcpy (write_rel, rel, sizeof (*rel)); | |
7348 | ++write_rel; | |
7349 | } | |
1e2f5b6e | 7350 | } |
51aecdc5 AM |
7351 | |
7352 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7353 | } |
7354 | ||
3f764659 | 7355 | sec->size = wptr - new_contents; |
1e2f5b6e | 7356 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7357 | if (add_aux_fields) |
7358 | { | |
7359 | free (sec->contents); | |
7360 | sec->contents = new_contents; | |
7361 | } | |
7362 | ||
05bf9422 | 7363 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7364 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7365 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7366 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7367 | some_edited = TRUE; |
1e2f5b6e | 7368 | } |
6cdc0ccc | 7369 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7370 | free (relstart); |
6cdc0ccc | 7371 | |
411e1bfb AM |
7372 | if (local_syms != NULL |
7373 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7374 | { | |
7375 | if (!info->keep_memory) | |
7376 | free (local_syms); | |
7377 | else | |
7378 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7379 | } | |
7380 | } | |
7381 | ||
754021d0 AM |
7382 | if (some_edited) |
7383 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7384 | ||
3f764659 JJ |
7385 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7386 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7387 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7388 | { |
7389 | bfd_byte *p; | |
7390 | ||
7391 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7392 | { | |
7393 | BFD_ASSERT (need_pad->size > 0); | |
7394 | ||
7395 | p = bfd_malloc (need_pad->size + 8); | |
7396 | if (p == NULL) | |
7397 | return FALSE; | |
699733f6 | 7398 | |
2cdcc330 AM |
7399 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7400 | p, 0, need_pad->size)) | |
3f764659 JJ |
7401 | return FALSE; |
7402 | ||
7403 | need_pad->contents = p; | |
7404 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7405 | } | |
7406 | else | |
7407 | { | |
7408 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7409 | if (p == NULL) | |
7410 | return FALSE; | |
7411 | ||
7412 | need_pad->contents = p; | |
7413 | } | |
7414 | ||
7415 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7416 | need_pad->size += 8; | |
7417 | } | |
7418 | ||
411e1bfb AM |
7419 | return TRUE; |
7420 | } | |
7421 | ||
3e04d765 AM |
7422 | /* Analyze inline PLT call relocations to see whether calls to locally |
7423 | defined functions can be converted to direct calls. */ | |
7424 | ||
7425 | bfd_boolean | |
7426 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7427 | { | |
7428 | struct ppc_link_hash_table *htab; | |
7429 | bfd *ibfd; | |
7430 | asection *sec; | |
7431 | bfd_vma low_vma, high_vma, limit; | |
7432 | ||
7433 | htab = ppc_hash_table (info); | |
7434 | if (htab == NULL) | |
7435 | return FALSE; | |
7436 | ||
7437 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7438 | reduced somewhat to cater for possible stubs that might be added | |
7439 | between the call and its destination. */ | |
7440 | if (htab->params->group_size < 0) | |
7441 | { | |
7442 | limit = -htab->params->group_size; | |
7443 | if (limit == 1) | |
7444 | limit = 0x1e00000; | |
7445 | } | |
7446 | else | |
7447 | { | |
7448 | limit = htab->params->group_size; | |
7449 | if (limit == 1) | |
7450 | limit = 0x1c00000; | |
7451 | } | |
7452 | ||
7453 | low_vma = -1; | |
7454 | high_vma = 0; | |
7455 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7456 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7457 | { | |
7458 | if (low_vma > sec->vma) | |
7459 | low_vma = sec->vma; | |
7460 | if (high_vma < sec->vma + sec->size) | |
7461 | high_vma = sec->vma + sec->size; | |
7462 | } | |
7463 | ||
7464 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7465 | convert all inline PLT sequences to direct calls when the symbol | |
7466 | is local. */ | |
7467 | if (high_vma - low_vma < limit) | |
7468 | { | |
7469 | htab->can_convert_all_inline_plt = 1; | |
7470 | return TRUE; | |
7471 | } | |
7472 | ||
7473 | /* Otherwise, go looking through relocs for cases where a direct | |
7474 | call won't reach. Mark the symbol on any such reloc to disable | |
7475 | the optimization and keep the PLT entry as it seems likely that | |
7476 | this will be better than creating trampolines. Note that this | |
7477 | will disable the optimization for all inline PLT calls to a | |
7478 | particular symbol, not just those that won't reach. The | |
7479 | difficulty in doing a more precise optimization is that the | |
7480 | linker needs to make a decision depending on whether a | |
7481 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7482 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7483 | the sequence, and there is nothing that ties those relocs | |
7484 | together except their symbol. */ | |
7485 | ||
7486 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7487 | { | |
7488 | Elf_Internal_Shdr *symtab_hdr; | |
7489 | Elf_Internal_Sym *local_syms; | |
7490 | ||
7491 | if (!is_ppc64_elf (ibfd)) | |
7492 | continue; | |
7493 | ||
7494 | local_syms = NULL; | |
7495 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7496 | ||
7497 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7498 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7499 | && !bfd_is_abs_section (sec->output_section)) | |
7500 | { | |
7501 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7502 | ||
7503 | /* Read the relocations. */ | |
7504 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7505 | info->keep_memory); | |
7506 | if (relstart == NULL) | |
7507 | return FALSE; | |
7508 | ||
7509 | relend = relstart + sec->reloc_count; | |
7510 | for (rel = relstart; rel < relend; ) | |
7511 | { | |
7512 | enum elf_ppc64_reloc_type r_type; | |
7513 | unsigned long r_symndx; | |
7514 | asection *sym_sec; | |
7515 | struct elf_link_hash_entry *h; | |
7516 | Elf_Internal_Sym *sym; | |
7517 | unsigned char *tls_maskp; | |
7518 | ||
7519 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7520 | if (r_type != R_PPC64_PLTCALL |
7521 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7522 | continue; |
7523 | ||
7524 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7525 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7526 | r_symndx, ibfd)) | |
7527 | { | |
7528 | if (elf_section_data (sec)->relocs != relstart) | |
7529 | free (relstart); | |
7530 | if (local_syms != NULL | |
2cdcc330 | 7531 | && symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7532 | free (local_syms); |
7533 | return FALSE; | |
7534 | } | |
7535 | ||
7536 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7537 | { | |
7538 | bfd_vma from, to; | |
7539 | if (h != NULL) | |
7540 | to = h->root.u.def.value; | |
7541 | else | |
7542 | to = sym->st_value; | |
7543 | to += (rel->r_addend | |
7544 | + sym_sec->output_offset | |
7545 | + sym_sec->output_section->vma); | |
7546 | from = (rel->r_offset | |
7547 | + sec->output_offset | |
7548 | + sec->output_section->vma); | |
5663e321 AM |
7549 | if (to - from + limit < 2 * limit |
7550 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7551 | && (((h ? h->other : sym->st_other) | |
7552 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7553 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7554 | *tls_maskp &= ~PLT_KEEP; |
7555 | } | |
7556 | } | |
7557 | if (elf_section_data (sec)->relocs != relstart) | |
7558 | free (relstart); | |
7559 | } | |
7560 | ||
7561 | if (local_syms != NULL | |
7562 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7563 | { | |
7564 | if (!info->keep_memory) | |
7565 | free (local_syms); | |
7566 | else | |
7567 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7568 | } | |
7569 | } | |
7570 | ||
7571 | return TRUE; | |
7572 | } | |
7573 | ||
e1918d23 | 7574 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7575 | |
e1918d23 | 7576 | asection * |
e7d1c40c | 7577 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7578 | { |
411e1bfb AM |
7579 | struct ppc_link_hash_table *htab; |
7580 | ||
411e1bfb | 7581 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7582 | if (htab == NULL) |
7583 | return NULL; | |
7584 | ||
ee67d69a AM |
7585 | if (abiversion (info->output_bfd) == 1) |
7586 | htab->opd_abi = 1; | |
7587 | ||
e7d1c40c | 7588 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7589 | htab->do_multi_toc = 0; |
7590 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7591 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7592 | |
8b5f1ed8 AM |
7593 | /* Default to --no-plt-localentry, as this option can cause problems |
7594 | with symbol interposition. For example, glibc libpthread.so and | |
7595 | libc.so duplicate many pthread symbols, with a fallback | |
7596 | implementation in libc.so. In some cases the fallback does more | |
7597 | work than the pthread implementation. __pthread_condattr_destroy | |
7598 | is one such symbol: the libpthread.so implementation is | |
7599 | localentry:0 while the libc.so implementation is localentry:8. | |
7600 | An app that "cleverly" uses dlopen to only load necessary | |
7601 | libraries at runtime may omit loading libpthread.so when not | |
7602 | running multi-threaded, which then results in the libc.so | |
7603 | fallback symbols being used and ld.so complaining. Now there | |
7604 | are workarounds in ld (see non_zero_localentry) to detect the | |
7605 | pthread situation, but that may not be the only case where | |
7606 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7607 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7608 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7609 | if (htab->params->plt_localentry0 |
7610 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7611 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7612 | _bfd_error_handler |
7613 | (_("warning: --plt-localentry is especially dangerous without " | |
7614 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7615 | |
3a71aa26 AM |
7616 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7617 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7618 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7619 | /* Move dynamic linking info to the function descriptor sym. */ |
7620 | if (htab->tls_get_addr != NULL) | |
7621 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7622 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7623 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7624 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 7625 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
7626 | { |
7627 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7628 | ||
7629 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7630 | FALSE, FALSE, TRUE); | |
7631 | if (opt != NULL) | |
7632 | func_desc_adjust (opt, info); | |
7633 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7634 | FALSE, FALSE, TRUE); | |
7635 | if (opt_fd != NULL | |
7636 | && (opt_fd->root.type == bfd_link_hash_defined | |
7637 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7638 | { | |
7639 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7640 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7641 | be calling __tls_get_addr via a plt call stub, then | |
7642 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7643 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7644 | if (htab->elf.dynamic_sections_created | |
7645 | && tga_fd != NULL | |
7646 | && (tga_fd->type == STT_FUNC | |
7647 | || tga_fd->needs_plt) | |
7648 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 7649 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
7650 | { |
7651 | struct plt_entry *ent; | |
7652 | ||
7653 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7654 | if (ent->plt.refcount > 0) | |
7655 | break; | |
7656 | if (ent != NULL) | |
7657 | { | |
7658 | tga_fd->root.type = bfd_link_hash_indirect; | |
7659 | tga_fd->root.u.i.link = &opt_fd->root; | |
7660 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 7661 | opt_fd->mark = 1; |
a7f2871e AM |
7662 | if (opt_fd->dynindx != -1) |
7663 | { | |
7664 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7665 | opt_fd->dynindx = -1; | |
7666 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7667 | opt_fd->dynstr_index); | |
7668 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7669 | return NULL; |
a7f2871e | 7670 | } |
2cdcc330 AM |
7671 | htab->tls_get_addr_fd |
7672 | = (struct ppc_link_hash_entry *) opt_fd; | |
a7f2871e AM |
7673 | tga = &htab->tls_get_addr->elf; |
7674 | if (opt != NULL && tga != NULL) | |
7675 | { | |
7676 | tga->root.type = bfd_link_hash_indirect; | |
7677 | tga->root.u.i.link = &opt->root; | |
7678 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 7679 | opt->mark = 1; |
a7f2871e AM |
7680 | _bfd_elf_link_hash_hide_symbol (info, opt, |
7681 | tga->forced_local); | |
7682 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7683 | } | |
7684 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7685 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7686 | if (htab->tls_get_addr != NULL) | |
7687 | { | |
7688 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7689 | htab->tls_get_addr->is_func = 1; | |
7690 | } | |
7691 | } | |
7692 | } | |
7693 | } | |
7c9cf415 AM |
7694 | else if (htab->params->tls_get_addr_opt < 0) |
7695 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7696 | } |
33c0ec9d | 7697 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7698 | } |
8387904d | 7699 | |
3a71aa26 AM |
7700 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7701 | HASH1 or HASH2. */ | |
8387904d | 7702 | |
3a71aa26 AM |
7703 | static bfd_boolean |
7704 | branch_reloc_hash_match (const bfd *ibfd, | |
7705 | const Elf_Internal_Rela *rel, | |
7706 | const struct ppc_link_hash_entry *hash1, | |
7707 | const struct ppc_link_hash_entry *hash2) | |
7708 | { | |
7709 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7710 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7711 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7712 | ||
e054468f | 7713 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7714 | { |
3a71aa26 AM |
7715 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7716 | struct elf_link_hash_entry *h; | |
8387904d | 7717 | |
3a71aa26 | 7718 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7719 | h = elf_follow_link (h); |
3a71aa26 AM |
7720 | if (h == &hash1->elf || h == &hash2->elf) |
7721 | return TRUE; | |
a48ebf4d | 7722 | } |
3a71aa26 | 7723 | return FALSE; |
951fd09b | 7724 | } |
411e1bfb | 7725 | |
951fd09b AM |
7726 | /* Run through all the TLS relocs looking for optimization |
7727 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7728 | a preliminary section layout so that we know the TLS segment | |
7729 | offsets. We can't optimize earlier because some optimizations need | |
7730 | to know the tp offset, and we need to optimize before allocating | |
7731 | dynamic relocations. */ | |
7732 | ||
7733 | bfd_boolean | |
33c0ec9d | 7734 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7735 | { |
7736 | bfd *ibfd; | |
7737 | asection *sec; | |
7738 | struct ppc_link_hash_table *htab; | |
663a1470 | 7739 | unsigned char *toc_ref; |
102890f0 | 7740 | int pass; |
951fd09b | 7741 | |
3cbc1e5e | 7742 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7743 | return TRUE; |
7744 | ||
951fd09b | 7745 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7746 | if (htab == NULL) |
7747 | return FALSE; | |
7748 | ||
663a1470 AM |
7749 | /* Make two passes over the relocs. On the first pass, mark toc |
7750 | entries involved with tls relocs, and check that tls relocs | |
7751 | involved in setting up a tls_get_addr call are indeed followed by | |
7752 | such a call. If they are not, we can't do any tls optimization. | |
7753 | On the second pass twiddle tls_mask flags to notify | |
7754 | relocate_section that optimization can be done, and adjust got | |
7755 | and plt refcounts. */ | |
7756 | toc_ref = NULL; | |
7757 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7758 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7759 | { |
7760 | Elf_Internal_Sym *locsyms = NULL; | |
7761 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7762 | ||
102890f0 AM |
7763 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7764 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7765 | { | |
7766 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7767 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7768 | |
102890f0 AM |
7769 | /* Read the relocations. */ |
7770 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7771 | info->keep_memory); | |
7772 | if (relstart == NULL) | |
2915c55b JK |
7773 | { |
7774 | free (toc_ref); | |
7775 | return FALSE; | |
7776 | } | |
411e1bfb | 7777 | |
102890f0 AM |
7778 | relend = relstart + sec->reloc_count; |
7779 | for (rel = relstart; rel < relend; rel++) | |
7780 | { | |
7781 | enum elf_ppc64_reloc_type r_type; | |
7782 | unsigned long r_symndx; | |
7783 | struct elf_link_hash_entry *h; | |
7784 | Elf_Internal_Sym *sym; | |
7785 | asection *sym_sec; | |
f961d9dd | 7786 | unsigned char *tls_mask; |
46e9995a | 7787 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 AM |
7788 | bfd_vma value; |
7789 | bfd_boolean ok_tprel, is_local; | |
7790 | long toc_ref_index = 0; | |
7791 | int expecting_tls_get_addr = 0; | |
663a1470 | 7792 | bfd_boolean ret = FALSE; |
411e1bfb | 7793 | |
102890f0 AM |
7794 | r_symndx = ELF64_R_SYM (rel->r_info); |
7795 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7796 | r_symndx, ibfd)) | |
7797 | { | |
7798 | err_free_rel: | |
7799 | if (elf_section_data (sec)->relocs != relstart) | |
7800 | free (relstart); | |
7801 | if (toc_ref != NULL) | |
7802 | free (toc_ref); | |
7803 | if (locsyms != NULL | |
0ffa91dd | 7804 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7805 | != (unsigned char *) locsyms)) |
7806 | free (locsyms); | |
663a1470 | 7807 | return ret; |
102890f0 | 7808 | } |
411e1bfb | 7809 | |
102890f0 AM |
7810 | if (h != NULL) |
7811 | { | |
766bc656 AM |
7812 | if (h->root.type == bfd_link_hash_defined |
7813 | || h->root.type == bfd_link_hash_defweak) | |
7814 | value = h->root.u.def.value; | |
7815 | else if (h->root.type == bfd_link_hash_undefweak) | |
7816 | value = 0; | |
7817 | else | |
663a1470 AM |
7818 | { |
7819 | found_tls_get_addr_arg = 0; | |
7820 | continue; | |
7821 | } | |
102890f0 AM |
7822 | } |
7823 | else | |
7824 | /* Symbols referenced by TLS relocs must be of type | |
7825 | STT_TLS. So no need for .opd local sym adjust. */ | |
7826 | value = sym->st_value; | |
7827 | ||
7828 | ok_tprel = FALSE; | |
f749f26e AM |
7829 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
7830 | if (is_local) | |
102890f0 | 7831 | { |
766bc656 AM |
7832 | if (h != NULL |
7833 | && h->root.type == bfd_link_hash_undefweak) | |
7834 | ok_tprel = TRUE; | |
c27b8c2a AM |
7835 | else if (sym_sec != NULL |
7836 | && sym_sec->output_section != NULL) | |
766bc656 AM |
7837 | { |
7838 | value += sym_sec->output_offset; | |
7839 | value += sym_sec->output_section->vma; | |
0b147428 | 7840 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
7841 | /* Note that even though the prefix insns |
7842 | allow a 1<<33 offset we use the same test | |
7843 | as for addis;addi. There may be a mix of | |
7844 | pcrel and non-pcrel code and the decision | |
7845 | to optimise is per symbol, not per TLS | |
7846 | sequence. */ | |
0b147428 | 7847 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 7848 | } |
102890f0 | 7849 | } |
951fd09b | 7850 | |
102890f0 | 7851 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7852 | /* If this section has old-style __tls_get_addr calls |
7853 | without marker relocs, then check that each | |
7854 | __tls_get_addr call reloc is preceded by a reloc | |
7855 | that conceivably belongs to the __tls_get_addr arg | |
7856 | setup insn. If we don't find matching arg setup | |
7857 | relocs, don't do any tls optimization. */ | |
7858 | if (pass == 0 | |
9737e8af | 7859 | && sec->nomark_tls_get_addr |
663a1470 AM |
7860 | && h != NULL |
7861 | && (h == &htab->tls_get_addr->elf | |
7862 | || h == &htab->tls_get_addr_fd->elf) | |
7863 | && !found_tls_get_addr_arg | |
7864 | && is_branch_reloc (r_type)) | |
7865 | { | |
25f53a85 | 7866 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7867 | "TLS optimization disabled\n"), |
7868 | ibfd, sec, rel->r_offset); | |
7869 | ret = TRUE; | |
7870 | goto err_free_rel; | |
7871 | } | |
7872 | ||
7873 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7874 | switch (r_type) |
7875 | { | |
7876 | case R_PPC64_GOT_TLSLD16: | |
7877 | case R_PPC64_GOT_TLSLD16_LO: | |
c213164a | 7878 | case R_PPC64_GOT_TLSLD34: |
102890f0 | 7879 | expecting_tls_get_addr = 1; |
663a1470 | 7880 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7881 | /* Fall through. */ |
102890f0 AM |
7882 | |
7883 | case R_PPC64_GOT_TLSLD16_HI: | |
7884 | case R_PPC64_GOT_TLSLD16_HA: | |
7885 | /* These relocs should never be against a symbol | |
7886 | defined in a shared lib. Leave them alone if | |
7887 | that turns out to be the case. */ | |
7888 | if (!is_local) | |
7889 | continue; | |
411e1bfb | 7890 | |
102890f0 | 7891 | /* LD -> LE */ |
411e1bfb | 7892 | tls_set = 0; |
102890f0 AM |
7893 | tls_clear = TLS_LD; |
7894 | tls_type = TLS_TLS | TLS_LD; | |
7895 | break; | |
411e1bfb | 7896 | |
102890f0 AM |
7897 | case R_PPC64_GOT_TLSGD16: |
7898 | case R_PPC64_GOT_TLSGD16_LO: | |
c213164a | 7899 | case R_PPC64_GOT_TLSGD34: |
102890f0 | 7900 | expecting_tls_get_addr = 1; |
663a1470 | 7901 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7902 | /* Fall through. */ |
102890f0 AM |
7903 | |
7904 | case R_PPC64_GOT_TLSGD16_HI: | |
7905 | case R_PPC64_GOT_TLSGD16_HA: | |
7906 | if (ok_tprel) | |
7907 | /* GD -> LE */ | |
411e1bfb | 7908 | tls_set = 0; |
102890f0 AM |
7909 | else |
7910 | /* GD -> IE */ | |
b00a0a86 | 7911 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
7912 | tls_clear = TLS_GD; |
7913 | tls_type = TLS_TLS | TLS_GD; | |
7914 | break; | |
7915 | ||
c213164a | 7916 | case R_PPC64_GOT_TPREL34: |
102890f0 AM |
7917 | case R_PPC64_GOT_TPREL16_DS: |
7918 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7919 | case R_PPC64_GOT_TPREL16_HI: | |
7920 | case R_PPC64_GOT_TPREL16_HA: | |
7921 | if (ok_tprel) | |
7922 | { | |
7923 | /* IE -> LE */ | |
7924 | tls_set = 0; | |
7925 | tls_clear = TLS_TPREL; | |
7926 | tls_type = TLS_TLS | TLS_TPREL; | |
7927 | break; | |
7928 | } | |
411e1bfb AM |
7929 | continue; |
7930 | ||
727fc41e | 7931 | case R_PPC64_TLSLD: |
7d04a20a AM |
7932 | if (!is_local) |
7933 | continue; | |
7934 | /* Fall through. */ | |
7935 | case R_PPC64_TLSGD: | |
23cedd1d AM |
7936 | if (rel + 1 < relend |
7937 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
7938 | { | |
7939 | if (pass != 0 | |
2cdcc330 | 7940 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
7941 | != R_PPC64_PLTSEQ) |
7942 | && (ELF64_R_TYPE (rel[1].r_info) | |
7943 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
7944 | { |
7945 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
7946 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 7947 | r_symndx, ibfd)) |
23cedd1d AM |
7948 | goto err_free_rel; |
7949 | if (h != NULL) | |
7950 | { | |
7951 | struct plt_entry *ent = NULL; | |
7952 | ||
7953 | for (ent = h->plt.plist; | |
7954 | ent != NULL; | |
7955 | ent = ent->next) | |
7956 | if (ent->addend == rel[1].r_addend) | |
7957 | break; | |
7958 | ||
7959 | if (ent != NULL | |
7960 | && ent->plt.refcount > 0) | |
7961 | ent->plt.refcount -= 1; | |
7962 | } | |
7963 | } | |
7964 | continue; | |
7965 | } | |
663a1470 | 7966 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7967 | /* Fall through. */ |
663a1470 AM |
7968 | |
7969 | case R_PPC64_TLS: | |
7970 | case R_PPC64_TOC16: | |
7971 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7972 | if (sym_sec == NULL || sym_sec != toc) |
7973 | continue; | |
7974 | ||
7975 | /* Mark this toc entry as referenced by a TLS | |
7976 | code sequence. We can do that now in the | |
7977 | case of R_PPC64_TLS, and after checking for | |
7978 | tls_get_addr for the TOC16 relocs. */ | |
7979 | if (toc_ref == NULL) | |
2cdcc330 AM |
7980 | toc_ref |
7981 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
7982 | if (toc_ref == NULL) |
7983 | goto err_free_rel; | |
7984 | ||
102890f0 AM |
7985 | if (h != NULL) |
7986 | value = h->root.u.def.value; | |
7987 | else | |
7988 | value = sym->st_value; | |
7989 | value += rel->r_addend; | |
73242275 AM |
7990 | if (value % 8 != 0) |
7991 | continue; | |
7992 | BFD_ASSERT (value < toc->size | |
7993 | && toc->output_offset % 8 == 0); | |
663a1470 | 7994 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7995 | if (r_type == R_PPC64_TLS |
7996 | || r_type == R_PPC64_TLSGD | |
7997 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7998 | { |
7999 | toc_ref[toc_ref_index] = 1; | |
8000 | continue; | |
8001 | } | |
8002 | ||
8003 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8004 | continue; | |
8005 | ||
8006 | tls_set = 0; | |
8007 | tls_clear = 0; | |
8008 | expecting_tls_get_addr = 2; | |
8009 | break; | |
8010 | ||
8011 | case R_PPC64_TPREL64: | |
8012 | if (pass == 0 | |
8013 | || sec != toc | |
8014 | || toc_ref == NULL | |
663a1470 | 8015 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8016 | continue; |
8017 | if (ok_tprel) | |
8018 | { | |
8019 | /* IE -> LE */ | |
8020 | tls_set = TLS_EXPLICIT; | |
8021 | tls_clear = TLS_TPREL; | |
8022 | break; | |
8023 | } | |
8024 | continue; | |
8025 | ||
8026 | case R_PPC64_DTPMOD64: | |
8027 | if (pass == 0 | |
8028 | || sec != toc | |
8029 | || toc_ref == NULL | |
663a1470 | 8030 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8031 | continue; |
8032 | if (rel + 1 < relend | |
8033 | && (rel[1].r_info | |
8034 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8035 | && rel[1].r_offset == rel->r_offset + 8) | |
8036 | { | |
8037 | if (ok_tprel) | |
8038 | /* GD -> LE */ | |
8039 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8040 | else | |
8041 | /* GD -> IE */ | |
b00a0a86 | 8042 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8043 | tls_clear = TLS_GD; |
8044 | } | |
8045 | else | |
8046 | { | |
8047 | if (!is_local) | |
8048 | continue; | |
8049 | ||
8050 | /* LD -> LE */ | |
8051 | tls_set = TLS_EXPLICIT; | |
8052 | tls_clear = TLS_LD; | |
8053 | } | |
8054 | break; | |
8055 | ||
8056 | default: | |
8057 | continue; | |
8058 | } | |
8059 | ||
8060 | if (pass == 0) | |
8061 | { | |
727fc41e | 8062 | if (!expecting_tls_get_addr |
9737e8af | 8063 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8064 | continue; |
8065 | ||
3a71aa26 AM |
8066 | if (rel + 1 < relend |
8067 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8068 | htab->tls_get_addr, | |
8069 | htab->tls_get_addr_fd)) | |
102890f0 | 8070 | { |
3a71aa26 | 8071 | if (expecting_tls_get_addr == 2) |
102890f0 | 8072 | { |
3a71aa26 | 8073 | /* Check for toc tls entries. */ |
f961d9dd | 8074 | unsigned char *toc_tls; |
3a71aa26 AM |
8075 | int retval; |
8076 | ||
8077 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8078 | &locsyms, | |
8079 | rel, ibfd); | |
8080 | if (retval == 0) | |
8081 | goto err_free_rel; | |
663a1470 AM |
8082 | if (toc_tls != NULL) |
8083 | { | |
37da22e5 AM |
8084 | if ((*toc_tls & TLS_TLS) != 0 |
8085 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8086 | found_tls_get_addr_arg = 1; |
8087 | if (retval > 1) | |
8088 | toc_ref[toc_ref_index] = 1; | |
8089 | } | |
102890f0 | 8090 | } |
3a71aa26 | 8091 | continue; |
102890f0 AM |
8092 | } |
8093 | ||
102890f0 AM |
8094 | /* Uh oh, we didn't find the expected call. We |
8095 | could just mark this symbol to exclude it | |
8096 | from tls optimization but it's safer to skip | |
663a1470 | 8097 | the entire optimization. */ |
695344c0 | 8098 | /* xgettext:c-format */ |
25f53a85 | 8099 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8100 | "TLS optimization disabled\n"), |
8101 | ibfd, sec, rel->r_offset); | |
8102 | ret = TRUE; | |
8103 | goto err_free_rel; | |
102890f0 AM |
8104 | } |
8105 | ||
37da22e5 AM |
8106 | /* If we don't have old-style __tls_get_addr calls |
8107 | without TLSGD/TLSLD marker relocs, and we haven't | |
8108 | found a new-style __tls_get_addr call with a | |
8109 | marker for this symbol, then we either have a | |
8110 | broken object file or an -mlongcall style | |
8111 | indirect call to __tls_get_addr without a marker. | |
8112 | Disable optimization in this case. */ | |
8113 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8114 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8115 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8116 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8117 | != (TLS_TLS | TLS_MARK))) | |
8118 | continue; | |
8119 | ||
7d04a20a | 8120 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8121 | { |
23cedd1d AM |
8122 | struct plt_entry *ent = NULL; |
8123 | ||
8124 | if (htab->tls_get_addr != NULL) | |
8125 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8126 | ent != NULL; | |
8127 | ent = ent->next) | |
8128 | if (ent->addend == 0) | |
102890f0 | 8129 | break; |
411e1bfb | 8130 | |
23cedd1d AM |
8131 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
8132 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8133 | ent != NULL; | |
8134 | ent = ent->next) | |
8135 | if (ent->addend == 0) | |
102890f0 | 8136 | break; |
23cedd1d AM |
8137 | |
8138 | if (ent != NULL | |
8139 | && ent->plt.refcount > 0) | |
8140 | ent->plt.refcount -= 1; | |
102890f0 | 8141 | } |
411e1bfb | 8142 | |
102890f0 | 8143 | if (tls_clear == 0) |
30038c59 AM |
8144 | continue; |
8145 | ||
102890f0 AM |
8146 | if ((tls_set & TLS_EXPLICIT) == 0) |
8147 | { | |
8148 | struct got_entry *ent; | |
411e1bfb | 8149 | |
102890f0 AM |
8150 | /* Adjust got entry for this reloc. */ |
8151 | if (h != NULL) | |
8152 | ent = h->got.glist; | |
8153 | else | |
8154 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8155 | |
102890f0 AM |
8156 | for (; ent != NULL; ent = ent->next) |
8157 | if (ent->addend == rel->r_addend | |
8158 | && ent->owner == ibfd | |
8159 | && ent->tls_type == tls_type) | |
8160 | break; | |
8161 | if (ent == NULL) | |
8162 | abort (); | |
411e1bfb | 8163 | |
102890f0 AM |
8164 | if (tls_set == 0) |
8165 | { | |
8166 | /* We managed to get rid of a got entry. */ | |
8167 | if (ent->got.refcount > 0) | |
8168 | ent->got.refcount -= 1; | |
8169 | } | |
8170 | } | |
8171 | else | |
8172 | { | |
8173 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8174 | we'll lose one or two dyn relocs. */ | |
8175 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8176 | NULL, h, sym)) |
102890f0 | 8177 | return FALSE; |
411e1bfb | 8178 | |
102890f0 AM |
8179 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8180 | { | |
8181 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8182 | NULL, h, sym)) |
102890f0 AM |
8183 | return FALSE; |
8184 | } | |
8185 | } | |
411e1bfb | 8186 | |
46e9995a | 8187 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8188 | *tls_mask &= ~tls_clear; |
8189 | } | |
8c1d1bb8 | 8190 | |
102890f0 AM |
8191 | if (elf_section_data (sec)->relocs != relstart) |
8192 | free (relstart); | |
8193 | } | |
411e1bfb | 8194 | |
663a1470 AM |
8195 | if (locsyms != NULL |
8196 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8197 | { | |
8198 | if (!info->keep_memory) | |
8199 | free (locsyms); | |
8200 | else | |
8201 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8202 | } | |
8203 | } | |
411e1bfb | 8204 | |
663a1470 AM |
8205 | if (toc_ref != NULL) |
8206 | free (toc_ref); | |
9a23f96e | 8207 | htab->do_tls_opt = 1; |
b34976b6 | 8208 | return TRUE; |
1e2f5b6e | 8209 | } |
b34976b6 | 8210 | |
c5614fa4 AM |
8211 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8212 | the values of any global symbols in a toc section that has been | |
8213 | edited. Globals in toc sections should be a rarity, so this function | |
8214 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8215 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8216 | |
8217 | struct adjust_toc_info | |
8218 | { | |
8219 | asection *toc; | |
8220 | unsigned long *skip; | |
8221 | bfd_boolean global_toc_syms; | |
8222 | }; | |
8223 | ||
ba761f19 AM |
8224 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8225 | ||
c5614fa4 AM |
8226 | static bfd_boolean |
8227 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8228 | { | |
8229 | struct ppc_link_hash_entry *eh; | |
8230 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8231 | unsigned long i; |
c5614fa4 | 8232 | |
c5614fa4 AM |
8233 | if (h->root.type != bfd_link_hash_defined |
8234 | && h->root.type != bfd_link_hash_defweak) | |
8235 | return TRUE; | |
8236 | ||
8237 | eh = (struct ppc_link_hash_entry *) h; | |
8238 | if (eh->adjust_done) | |
8239 | return TRUE; | |
8240 | ||
8241 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8242 | { | |
854b41e7 AM |
8243 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8244 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8245 | else |
854b41e7 AM |
8246 | i = eh->elf.root.u.def.value >> 3; |
8247 | ||
ba761f19 | 8248 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8249 | { |
4eca0228 | 8250 | _bfd_error_handler |
854b41e7 AM |
8251 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8252 | do | |
8253 | ++i; | |
ba761f19 | 8254 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8255 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8256 | } |
854b41e7 AM |
8257 | |
8258 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8259 | eh->adjust_done = 1; |
8260 | } | |
8261 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8262 | toc_inf->global_toc_syms = TRUE; | |
8263 | ||
8264 | return TRUE; | |
8265 | } | |
8266 | ||
39eeab25 AM |
8267 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8268 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8269 | |
8270 | static bfd_boolean | |
39eeab25 | 8271 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8272 | { |
2365f8d7 AM |
8273 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8274 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8275 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8276 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8277 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8278 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8279 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8280 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8281 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8282 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8283 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8284 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8285 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8286 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8287 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8288 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8289 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8290 | /* Exclude lfqu by testing reloc. If relocs are ever |
8291 | defined for the reduced D field in psq_lu then those | |
8292 | will need testing too. */ | |
8293 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8294 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8295 | && (insn & 1) == 0) |
2365f8d7 AM |
8296 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8297 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8298 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8299 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8300 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8301 | && (insn & 1) == 0)); |
560c8763 AM |
8302 | } |
8303 | ||
4a421c53 AM |
8304 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8305 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8306 | load/store rt,off(ra) |
4a421c53 | 8307 | or |
d4b87b1e | 8308 | pla ra,symbol@pcrel |
dd9b12c2 | 8309 | load/store rt,off(ra) |
4a421c53 | 8310 | may be translated to |
dd9b12c2 | 8311 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8312 | nop. |
8313 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8314 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8315 | |
8316 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8317 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8318 | while *PINSN2 is the second instruction. */ |
8319 | ||
8320 | static bfd_boolean | |
dd9b12c2 | 8321 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8322 | { |
77486630 AM |
8323 | uint64_t insn1 = *pinsn1; |
8324 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8325 | bfd_signed_vma off; |
4a421c53 | 8326 | |
77486630 AM |
8327 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8328 | { | |
8329 | /* Check that regs match. */ | |
8330 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
8331 | return FALSE; | |
8332 | ||
8333 | /* P8LS or PMLS form, non-pcrel. */ | |
8334 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
8335 | return FALSE; | |
8336 | ||
8337 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8338 | *pinsn2 = PNOP; | |
8339 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8340 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
8341 | return TRUE; | |
8342 | } | |
8343 | ||
8344 | insn2 >>= 32; | |
8345 | ||
4a421c53 | 8346 | /* Check that regs match. */ |
77486630 | 8347 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
4a421c53 AM |
8348 | return FALSE; |
8349 | ||
8350 | switch ((insn2 >> 26) & 63) | |
8351 | { | |
8352 | default: | |
8353 | return FALSE; | |
8354 | ||
8355 | case 32: /* lwz */ | |
8356 | case 34: /* lbz */ | |
8357 | case 36: /* stw */ | |
8358 | case 38: /* stb */ | |
8359 | case 40: /* lhz */ | |
8360 | case 42: /* lha */ | |
8361 | case 44: /* sth */ | |
8362 | case 48: /* lfs */ | |
8363 | case 50: /* lfd */ | |
8364 | case 52: /* stfs */ | |
8365 | case 54: /* stfd */ | |
8366 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8367 | on the insn. */ |
77486630 | 8368 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8369 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8370 | off = insn2 & 0xffff; |
4a421c53 AM |
8371 | break; |
8372 | ||
8373 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8374 | if ((insn2 & 1) != 0) |
4a421c53 | 8375 | return FALSE; |
77486630 | 8376 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8377 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8378 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8379 | off = insn2 & 0xfffc; |
4a421c53 AM |
8380 | break; |
8381 | ||
8382 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8383 | if ((insn2 & 3) < 2) |
4a421c53 | 8384 | return FALSE; |
77486630 | 8385 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8386 | | ((40ULL | (insn2 & 3)) << 26) |
8387 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8388 | off = insn2 & 0xfffc; |
4a421c53 AM |
8389 | break; |
8390 | ||
8391 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8392 | if ((insn2 & 3) == 0) | |
8393 | return FALSE; | |
8394 | else if ((insn2 & 3) >= 2) | |
8395 | { | |
77486630 | 8396 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8397 | | ((44ULL | (insn2 & 3)) << 26) |
8398 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8399 | off = insn2 & 0xfffc; |
4a421c53 AM |
8400 | } |
8401 | else | |
8402 | { | |
77486630 | 8403 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8404 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8405 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8406 | off = insn2 & 0xfff0; |
4a421c53 AM |
8407 | } |
8408 | break; | |
8409 | ||
8410 | case 56: /* lq */ | |
77486630 | 8411 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8412 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8413 | off = insn2 & 0xffff; |
4a421c53 AM |
8414 | break; |
8415 | ||
8416 | case 62: /* std, stq */ | |
dd9b12c2 | 8417 | if ((insn2 & 1) != 0) |
4a421c53 | 8418 | return FALSE; |
77486630 | 8419 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8420 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8421 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8422 | off = insn2 & 0xfffc; |
4a421c53 AM |
8423 | break; |
8424 | } | |
8425 | ||
77486630 | 8426 | *pinsn1 = insn1; |
4a421c53 | 8427 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8428 | *poff = (off ^ 0x8000) - 0x8000; |
4a421c53 AM |
8429 | return TRUE; |
8430 | } | |
8431 | ||
c5614fa4 AM |
8432 | /* Examine all relocs referencing .toc sections in order to remove |
8433 | unused .toc entries. */ | |
8434 | ||
8435 | bfd_boolean | |
33c0ec9d | 8436 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8437 | { |
8438 | bfd *ibfd; | |
8439 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8440 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8441 | |
67f0cbdb | 8442 | htab->do_toc_opt = 1; |
c5614fa4 | 8443 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8444 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8445 | { |
8446 | asection *toc, *sec; | |
8447 | Elf_Internal_Shdr *symtab_hdr; | |
8448 | Elf_Internal_Sym *local_syms; | |
425b145b | 8449 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8450 | unsigned long *skip, *drop; |
8451 | unsigned char *used; | |
8452 | unsigned char *keep, last, some_unused; | |
8453 | ||
854b41e7 AM |
8454 | if (!is_ppc64_elf (ibfd)) |
8455 | continue; | |
8456 | ||
c5614fa4 AM |
8457 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8458 | if (toc == NULL | |
92b7a70f | 8459 | || toc->size == 0 |
dbaa2011 AM |
8460 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8461 | || discarded_section (toc)) | |
c5614fa4 AM |
8462 | continue; |
8463 | ||
425b145b | 8464 | toc_relocs = NULL; |
c5614fa4 | 8465 | local_syms = NULL; |
0ffa91dd | 8466 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8467 | |
8468 | /* Look at sections dropped from the final link. */ | |
8469 | skip = NULL; | |
8470 | relstart = NULL; | |
8471 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8472 | { | |
8473 | if (sec->reloc_count == 0 | |
dbaa2011 | 8474 | || !discarded_section (sec) |
c5614fa4 AM |
8475 | || get_opd_info (sec) |
8476 | || (sec->flags & SEC_ALLOC) == 0 | |
8477 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8478 | continue; | |
8479 | ||
8480 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8481 | if (relstart == NULL) | |
8482 | goto error_ret; | |
8483 | ||
8484 | /* Run through the relocs to see which toc entries might be | |
8485 | unused. */ | |
8486 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8487 | { | |
8488 | enum elf_ppc64_reloc_type r_type; | |
8489 | unsigned long r_symndx; | |
8490 | asection *sym_sec; | |
8491 | struct elf_link_hash_entry *h; | |
8492 | Elf_Internal_Sym *sym; | |
8493 | bfd_vma val; | |
8494 | ||
8495 | r_type = ELF64_R_TYPE (rel->r_info); | |
8496 | switch (r_type) | |
8497 | { | |
8498 | default: | |
8499 | continue; | |
8500 | ||
8501 | case R_PPC64_TOC16: | |
8502 | case R_PPC64_TOC16_LO: | |
8503 | case R_PPC64_TOC16_HI: | |
8504 | case R_PPC64_TOC16_HA: | |
8505 | case R_PPC64_TOC16_DS: | |
8506 | case R_PPC64_TOC16_LO_DS: | |
8507 | break; | |
8508 | } | |
8509 | ||
8510 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8511 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8512 | r_symndx, ibfd)) | |
8513 | goto error_ret; | |
8514 | ||
8515 | if (sym_sec != toc) | |
8516 | continue; | |
8517 | ||
8518 | if (h != NULL) | |
8519 | val = h->root.u.def.value; | |
8520 | else | |
8521 | val = sym->st_value; | |
8522 | val += rel->r_addend; | |
8523 | ||
8524 | if (val >= toc->size) | |
8525 | continue; | |
8526 | ||
8527 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8528 | If not, don't mark as unused. */ | |
8529 | if (val & 7) | |
8530 | continue; | |
8531 | ||
8532 | if (skip == NULL) | |
8533 | { | |
854b41e7 | 8534 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8535 | if (skip == NULL) |
8536 | goto error_ret; | |
8537 | } | |
8538 | ||
ba761f19 | 8539 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8540 | } |
8541 | ||
8542 | if (elf_section_data (sec)->relocs != relstart) | |
8543 | free (relstart); | |
8544 | } | |
8545 | ||
ba761f19 AM |
8546 | /* For largetoc loads of address constants, we can convert |
8547 | . addis rx,2,addr@got@ha | |
8548 | . ld ry,addr@got@l(rx) | |
8549 | to | |
8550 | . addis rx,2,addr@toc@ha | |
8551 | . addi ry,rx,addr@toc@l | |
8552 | when addr is within 2G of the toc pointer. This then means | |
8553 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8554 | |
ba761f19 AM |
8555 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8556 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8557 | && toc->reloc_count != 0) | |
8558 | { | |
8559 | /* Read toc relocs. */ | |
425b145b AM |
8560 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8561 | info->keep_memory); | |
8562 | if (toc_relocs == NULL) | |
ba761f19 AM |
8563 | goto error_ret; |
8564 | ||
425b145b | 8565 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8566 | { |
8567 | enum elf_ppc64_reloc_type r_type; | |
8568 | unsigned long r_symndx; | |
8569 | asection *sym_sec; | |
8570 | struct elf_link_hash_entry *h; | |
8571 | Elf_Internal_Sym *sym; | |
8572 | bfd_vma val, addr; | |
8573 | ||
8574 | r_type = ELF64_R_TYPE (rel->r_info); | |
8575 | if (r_type != R_PPC64_ADDR64) | |
8576 | continue; | |
8577 | ||
8578 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8579 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8580 | r_symndx, ibfd)) | |
8581 | goto error_ret; | |
8582 | ||
425b145b | 8583 | if (sym_sec == NULL |
c27b8c2a | 8584 | || sym_sec->output_section == NULL |
dbaa2011 | 8585 | || discarded_section (sym_sec)) |
425b145b AM |
8586 | continue; |
8587 | ||
afe397ea | 8588 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8589 | continue; |
8590 | ||
8591 | if (h != NULL) | |
bddc25c9 AM |
8592 | { |
8593 | if (h->type == STT_GNU_IFUNC) | |
8594 | continue; | |
8595 | val = h->root.u.def.value; | |
8596 | } | |
ba761f19 | 8597 | else |
bddc25c9 AM |
8598 | { |
8599 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8600 | continue; | |
8601 | val = sym->st_value; | |
8602 | } | |
ba761f19 AM |
8603 | val += rel->r_addend; |
8604 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8605 | ||
8606 | /* We don't yet know the exact toc pointer value, but we | |
8607 | know it will be somewhere in the toc section. Don't | |
8608 | optimize if the difference from any possible toc | |
8609 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8610 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8611 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8612 | continue; | |
8613 | ||
8614 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8615 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8616 | continue; | |
8617 | ||
8618 | if (skip == NULL) | |
8619 | { | |
8620 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8621 | if (skip == NULL) | |
8622 | goto error_ret; | |
8623 | } | |
8624 | ||
8625 | skip[rel->r_offset >> 3] | |
425b145b | 8626 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8627 | } |
ba761f19 AM |
8628 | } |
8629 | ||
c5614fa4 AM |
8630 | if (skip == NULL) |
8631 | continue; | |
8632 | ||
8633 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8634 | if (used == NULL) | |
8635 | { | |
8636 | error_ret: | |
8637 | if (local_syms != NULL | |
8638 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8639 | free (local_syms); | |
8640 | if (sec != NULL | |
8641 | && relstart != NULL | |
8642 | && elf_section_data (sec)->relocs != relstart) | |
8643 | free (relstart); | |
425b145b AM |
8644 | if (toc_relocs != NULL |
8645 | && elf_section_data (toc)->relocs != toc_relocs) | |
8646 | free (toc_relocs); | |
c5614fa4 AM |
8647 | if (skip != NULL) |
8648 | free (skip); | |
8649 | return FALSE; | |
8650 | } | |
8651 | ||
30038c59 AM |
8652 | /* Now check all kept sections that might reference the toc. |
8653 | Check the toc itself last. */ | |
8654 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8655 | : ibfd->sections); | |
c5614fa4 | 8656 | sec != NULL; |
c5614fa4 | 8657 | sec = (sec == toc ? NULL |
c5614fa4 | 8658 | : sec->next == NULL ? toc |
30038c59 | 8659 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8660 | : sec->next)) |
8661 | { | |
8662 | int repeat; | |
8663 | ||
8664 | if (sec->reloc_count == 0 | |
dbaa2011 | 8665 | || discarded_section (sec) |
c5614fa4 AM |
8666 | || get_opd_info (sec) |
8667 | || (sec->flags & SEC_ALLOC) == 0 | |
8668 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8669 | continue; | |
8670 | ||
854b41e7 AM |
8671 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8672 | info->keep_memory); | |
c5614fa4 | 8673 | if (relstart == NULL) |
2915c55b JK |
8674 | { |
8675 | free (used); | |
8676 | goto error_ret; | |
8677 | } | |
c5614fa4 AM |
8678 | |
8679 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8680 | do |
d4f1ee75 AM |
8681 | { |
8682 | repeat = 0; | |
8683 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8684 | { | |
8685 | enum elf_ppc64_reloc_type r_type; | |
8686 | unsigned long r_symndx; | |
8687 | asection *sym_sec; | |
8688 | struct elf_link_hash_entry *h; | |
8689 | Elf_Internal_Sym *sym; | |
8690 | bfd_vma val; | |
98528052 | 8691 | |
d4f1ee75 | 8692 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
8693 | switch (r_type) |
8694 | { | |
8695 | case R_PPC64_TOC16: | |
8696 | case R_PPC64_TOC16_LO: | |
8697 | case R_PPC64_TOC16_HI: | |
8698 | case R_PPC64_TOC16_HA: | |
8699 | case R_PPC64_TOC16_DS: | |
8700 | case R_PPC64_TOC16_LO_DS: | |
8701 | /* In case we're taking addresses of toc entries. */ | |
8702 | case R_PPC64_ADDR64: | |
8703 | break; | |
c5614fa4 | 8704 | |
d4f1ee75 AM |
8705 | default: |
8706 | continue; | |
8707 | } | |
c5614fa4 | 8708 | |
d4f1ee75 AM |
8709 | r_symndx = ELF64_R_SYM (rel->r_info); |
8710 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8711 | r_symndx, ibfd)) | |
8712 | { | |
8713 | free (used); | |
8714 | goto error_ret; | |
8715 | } | |
c5614fa4 | 8716 | |
d4f1ee75 AM |
8717 | if (sym_sec != toc) |
8718 | continue; | |
c5614fa4 | 8719 | |
d4f1ee75 AM |
8720 | if (h != NULL) |
8721 | val = h->root.u.def.value; | |
8722 | else | |
8723 | val = sym->st_value; | |
8724 | val += rel->r_addend; | |
ba761f19 | 8725 | |
d4f1ee75 AM |
8726 | if (val >= toc->size) |
8727 | continue; | |
ba761f19 | 8728 | |
d4f1ee75 AM |
8729 | if ((skip[val >> 3] & can_optimize) != 0) |
8730 | { | |
8731 | bfd_vma off; | |
8732 | unsigned char opc; | |
8733 | ||
8734 | switch (r_type) | |
8735 | { | |
8736 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8737 | break; |
ba761f19 | 8738 | |
d4f1ee75 AM |
8739 | case R_PPC64_TOC16_LO_DS: |
8740 | off = rel->r_offset; | |
8741 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8742 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8743 | off, 1)) | |
8744 | { | |
8745 | free (used); | |
8746 | goto error_ret; | |
8747 | } | |
8748 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8749 | break; | |
1a0670f3 | 8750 | /* Fall through. */ |
ba761f19 | 8751 | |
d4f1ee75 AM |
8752 | default: |
8753 | /* Wrong sort of reloc, or not a ld. We may | |
8754 | as well clear ref_from_discarded too. */ | |
8755 | skip[val >> 3] = 0; | |
8756 | } | |
8757 | } | |
8758 | ||
8759 | if (sec != toc) | |
8760 | used[val >> 3] = 1; | |
8761 | /* For the toc section, we only mark as used if this | |
8762 | entry itself isn't unused. */ | |
8763 | else if ((used[rel->r_offset >> 3] | |
8764 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8765 | && !used[val >> 3]) | |
8766 | { | |
8767 | /* Do all the relocs again, to catch reference | |
8768 | chains. */ | |
8769 | repeat = 1; | |
8770 | used[val >> 3] = 1; | |
8771 | } | |
8772 | } | |
8773 | } | |
c5614fa4 | 8774 | while (repeat); |
854b41e7 AM |
8775 | |
8776 | if (elf_section_data (sec)->relocs != relstart) | |
8777 | free (relstart); | |
c5614fa4 AM |
8778 | } |
8779 | ||
8780 | /* Merge the used and skip arrays. Assume that TOC | |
8781 | doublewords not appearing as either used or unused belong | |
de194d85 | 8782 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8783 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8784 | drop < skip + (toc->size + 7) / 8; | |
8785 | ++drop, ++keep) | |
8786 | { | |
8787 | if (*keep) | |
8788 | { | |
ba761f19 AM |
8789 | *drop &= ~ref_from_discarded; |
8790 | if ((*drop & can_optimize) != 0) | |
8791 | some_unused = 1; | |
c5614fa4 AM |
8792 | last = 0; |
8793 | } | |
b140b010 | 8794 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8795 | { |
8796 | some_unused = 1; | |
ba761f19 | 8797 | last = ref_from_discarded; |
c5614fa4 AM |
8798 | } |
8799 | else | |
8800 | *drop = last; | |
8801 | } | |
8802 | ||
8803 | free (used); | |
8804 | ||
8805 | if (some_unused) | |
8806 | { | |
8807 | bfd_byte *contents, *src; | |
8808 | unsigned long off; | |
d62b3684 | 8809 | Elf_Internal_Sym *sym; |
ba761f19 | 8810 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8811 | |
8812 | /* Shuffle the toc contents, and at the same time convert the | |
8813 | skip array from booleans into offsets. */ | |
8814 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8815 | goto error_ret; | |
8816 | ||
8817 | elf_section_data (toc)->this_hdr.contents = contents; | |
8818 | ||
8819 | for (src = contents, off = 0, drop = skip; | |
8820 | src < contents + toc->size; | |
8821 | src += 8, ++drop) | |
8822 | { | |
ba761f19 AM |
8823 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8824 | off += 8; | |
c5614fa4 AM |
8825 | else if (off != 0) |
8826 | { | |
8827 | *drop = off; | |
8828 | memcpy (src - off, src, 8); | |
8829 | } | |
8830 | } | |
854b41e7 | 8831 | *drop = off; |
c5614fa4 AM |
8832 | toc->rawsize = toc->size; |
8833 | toc->size = src - contents - off; | |
8834 | ||
ba761f19 AM |
8835 | /* Adjust addends for relocs against the toc section sym, |
8836 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8837 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8838 | { | |
8839 | if (sec->reloc_count == 0 | |
dbaa2011 | 8840 | || discarded_section (sec)) |
c5614fa4 AM |
8841 | continue; |
8842 | ||
8843 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8844 | info->keep_memory); |
c5614fa4 AM |
8845 | if (relstart == NULL) |
8846 | goto error_ret; | |
8847 | ||
8848 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8849 | { | |
8850 | enum elf_ppc64_reloc_type r_type; | |
8851 | unsigned long r_symndx; | |
8852 | asection *sym_sec; | |
8853 | struct elf_link_hash_entry *h; | |
854b41e7 | 8854 | bfd_vma val; |
c5614fa4 AM |
8855 | |
8856 | r_type = ELF64_R_TYPE (rel->r_info); | |
8857 | switch (r_type) | |
8858 | { | |
8859 | default: | |
8860 | continue; | |
8861 | ||
8862 | case R_PPC64_TOC16: | |
8863 | case R_PPC64_TOC16_LO: | |
8864 | case R_PPC64_TOC16_HI: | |
8865 | case R_PPC64_TOC16_HA: | |
8866 | case R_PPC64_TOC16_DS: | |
8867 | case R_PPC64_TOC16_LO_DS: | |
8868 | case R_PPC64_ADDR64: | |
8869 | break; | |
8870 | } | |
8871 | ||
8872 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8873 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8874 | r_symndx, ibfd)) | |
8875 | goto error_ret; | |
8876 | ||
ba761f19 | 8877 | if (sym_sec != toc) |
c5614fa4 AM |
8878 | continue; |
8879 | ||
ba761f19 AM |
8880 | if (h != NULL) |
8881 | val = h->root.u.def.value; | |
8882 | else | |
8883 | { | |
8884 | val = sym->st_value; | |
8885 | if (val != 0) | |
8886 | local_toc_syms = TRUE; | |
8887 | } | |
8888 | ||
8889 | val += rel->r_addend; | |
854b41e7 AM |
8890 | |
8891 | if (val > toc->rawsize) | |
8892 | val = toc->rawsize; | |
ba761f19 AM |
8893 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8894 | continue; | |
8895 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8896 | { | |
8897 | Elf_Internal_Rela *tocrel | |
425b145b | 8898 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8899 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8900 | ||
8901 | switch (r_type) | |
8902 | { | |
8903 | case R_PPC64_TOC16_HA: | |
8904 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8905 | break; | |
8906 | ||
8907 | case R_PPC64_TOC16_LO_DS: | |
8908 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8909 | break; | |
8910 | ||
8911 | default: | |
28942f62 AM |
8912 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8913 | ppc_howto_init (); | |
b140b010 | 8914 | info->callbacks->einfo |
695344c0 | 8915 | /* xgettext:c-format */ |
174d0a74 | 8916 | (_("%H: %s references " |
b140b010 AM |
8917 | "optimized away TOC entry\n"), |
8918 | ibfd, sec, rel->r_offset, | |
8919 | ppc64_elf_howto_table[r_type]->name); | |
8920 | bfd_set_error (bfd_error_bad_value); | |
8921 | goto error_ret; | |
ba761f19 AM |
8922 | } |
8923 | rel->r_addend = tocrel->r_addend; | |
8924 | elf_section_data (sec)->relocs = relstart; | |
8925 | continue; | |
8926 | } | |
8927 | ||
8928 | if (h != NULL || sym->st_value != 0) | |
8929 | continue; | |
854b41e7 AM |
8930 | |
8931 | rel->r_addend -= skip[val >> 3]; | |
8932 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8933 | } |
854b41e7 AM |
8934 | |
8935 | if (elf_section_data (sec)->relocs != relstart) | |
8936 | free (relstart); | |
c5614fa4 AM |
8937 | } |
8938 | ||
8939 | /* We shouldn't have local or global symbols defined in the TOC, | |
8940 | but handle them anyway. */ | |
df22d223 AM |
8941 | if (local_syms != NULL) |
8942 | for (sym = local_syms; | |
8943 | sym < local_syms + symtab_hdr->sh_info; | |
8944 | ++sym) | |
8945 | if (sym->st_value != 0 | |
8946 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8947 | { | |
8948 | unsigned long i; | |
854b41e7 | 8949 | |
df22d223 AM |
8950 | if (sym->st_value > toc->rawsize) |
8951 | i = toc->rawsize >> 3; | |
8952 | else | |
8953 | i = sym->st_value >> 3; | |
854b41e7 | 8954 | |
df22d223 AM |
8955 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8956 | { | |
8957 | if (local_toc_syms) | |
4eca0228 | 8958 | _bfd_error_handler |
df22d223 AM |
8959 | (_("%s defined on removed toc entry"), |
8960 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8961 | do | |
8962 | ++i; | |
8963 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8964 | sym->st_value = (bfd_vma) i << 3; | |
8965 | } | |
d62b3684 | 8966 | |
df22d223 AM |
8967 | sym->st_value -= skip[i]; |
8968 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8969 | } | |
c5614fa4 | 8970 | |
854b41e7 | 8971 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8972 | if (toc_inf.global_toc_syms) |
8973 | { | |
8974 | toc_inf.toc = toc; | |
8975 | toc_inf.skip = skip; | |
8976 | toc_inf.global_toc_syms = FALSE; | |
8977 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8978 | &toc_inf); | |
8979 | } | |
854b41e7 AM |
8980 | |
8981 | if (toc->reloc_count != 0) | |
8982 | { | |
d4730f92 | 8983 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8984 | Elf_Internal_Rela *wrel; |
8985 | bfd_size_type sz; | |
8986 | ||
854b41e7 | 8987 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8988 | if (toc_relocs == NULL) |
8989 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8990 | info->keep_memory); | |
8991 | if (toc_relocs == NULL) | |
8992 | goto error_ret; | |
8993 | ||
425b145b AM |
8994 | wrel = toc_relocs; |
8995 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8996 | if ((skip[rel->r_offset >> 3] |
8997 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8998 | { |
8999 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9000 | wrel->r_info = rel->r_info; | |
9001 | wrel->r_addend = rel->r_addend; | |
9002 | ++wrel; | |
9003 | } | |
9004 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9005 | &local_syms, NULL, NULL)) | |
9006 | goto error_ret; | |
9007 | ||
425b145b AM |
9008 | elf_section_data (toc)->relocs = toc_relocs; |
9009 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9010 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9011 | sz = rel_hdr->sh_entsize; | |
9012 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9013 | } |
c5614fa4 | 9014 | } |
28be611c AM |
9015 | else if (toc_relocs != NULL |
9016 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9017 | free (toc_relocs); |
c5614fa4 AM |
9018 | |
9019 | if (local_syms != NULL | |
9020 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9021 | { | |
9022 | if (!info->keep_memory) | |
9023 | free (local_syms); | |
9024 | else | |
9025 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9026 | } | |
9027 | free (skip); | |
9028 | } | |
9029 | ||
066f4018 | 9030 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9031 | a GOT relative or PC relative access, possibly reducing the |
9032 | number of GOT entries. */ | |
066f4018 AM |
9033 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9034 | { | |
9035 | asection *sec; | |
9036 | Elf_Internal_Shdr *symtab_hdr; | |
9037 | Elf_Internal_Sym *local_syms; | |
9038 | Elf_Internal_Rela *relstart, *rel; | |
9039 | bfd_vma got; | |
9040 | ||
9041 | if (!is_ppc64_elf (ibfd)) | |
9042 | continue; | |
9043 | ||
903b777d | 9044 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9045 | continue; |
9046 | ||
9047 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9048 | got = 0; |
9049 | if (sec != NULL) | |
9050 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9051 | |
9052 | local_syms = NULL; | |
9053 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9054 | ||
9055 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9056 | { | |
9057 | if (sec->reloc_count == 0 | |
903b777d | 9058 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9059 | || discarded_section (sec)) |
9060 | continue; | |
9061 | ||
9062 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9063 | info->keep_memory); | |
9064 | if (relstart == NULL) | |
9065 | { | |
9066 | got_error_ret: | |
9067 | if (local_syms != NULL | |
9068 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9069 | free (local_syms); | |
9070 | if (sec != NULL | |
9071 | && relstart != NULL | |
9072 | && elf_section_data (sec)->relocs != relstart) | |
9073 | free (relstart); | |
9074 | return FALSE; | |
9075 | } | |
9076 | ||
9077 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9078 | { | |
9079 | enum elf_ppc64_reloc_type r_type; | |
9080 | unsigned long r_symndx; | |
9081 | Elf_Internal_Sym *sym; | |
9082 | asection *sym_sec; | |
9083 | struct elf_link_hash_entry *h; | |
9084 | struct got_entry *ent; | |
133a1f60 | 9085 | bfd_vma val, pc; |
4a421c53 | 9086 | unsigned char buf[8]; |
066f4018 | 9087 | unsigned int insn; |
903b777d | 9088 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9089 | |
9090 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9091 | switch (r_type) |
9092 | { | |
9093 | default: | |
9094 | insn_check = no_check; | |
9095 | break; | |
9096 | ||
9097 | case R_PPC64_PLT16_HA: | |
9098 | case R_PPC64_GOT_TLSLD16_HA: | |
9099 | case R_PPC64_GOT_TLSGD16_HA: | |
9100 | case R_PPC64_GOT_TPREL16_HA: | |
9101 | case R_PPC64_GOT_DTPREL16_HA: | |
9102 | case R_PPC64_GOT16_HA: | |
9103 | case R_PPC64_TOC16_HA: | |
9104 | insn_check = check_ha; | |
9105 | break; | |
9106 | ||
9107 | case R_PPC64_PLT16_LO: | |
9108 | case R_PPC64_PLT16_LO_DS: | |
9109 | case R_PPC64_GOT_TLSLD16_LO: | |
9110 | case R_PPC64_GOT_TLSGD16_LO: | |
9111 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9112 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9113 | case R_PPC64_GOT16_LO: | |
9114 | case R_PPC64_GOT16_LO_DS: | |
9115 | case R_PPC64_TOC16_LO: | |
9116 | case R_PPC64_TOC16_LO_DS: | |
9117 | insn_check = check_lo; | |
9118 | break; | |
9119 | } | |
9120 | ||
9121 | if (insn_check != no_check) | |
9122 | { | |
9123 | bfd_vma off = rel->r_offset & ~3; | |
9124 | ||
9125 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9126 | goto got_error_ret; | |
9127 | ||
9128 | insn = bfd_get_32 (ibfd, buf); | |
9129 | if (insn_check == check_lo | |
9130 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9131 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9132 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9133 | { | |
9134 | char str[12]; | |
9135 | ||
9136 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9137 | sprintf (str, "%#08x", insn); | |
9138 | info->callbacks->einfo | |
9139 | /* xgettext:c-format */ | |
9140 | (_("%H: got/toc optimization is not supported for" | |
9141 | " %s instruction\n"), | |
9142 | ibfd, sec, rel->r_offset & ~3, str); | |
9143 | continue; | |
9144 | } | |
9145 | } | |
9146 | ||
066f4018 AM |
9147 | switch (r_type) |
9148 | { | |
bb22a418 AM |
9149 | /* Note that we don't delete GOT entries for |
9150 | R_PPC64_GOT16_DS since we'd need a lot more | |
9151 | analysis. For starters, the preliminary layout is | |
9152 | before the GOT, PLT, dynamic sections and stubs are | |
9153 | laid out. Then we'd need to allow for changes in | |
9154 | distance between sections caused by alignment. */ | |
066f4018 AM |
9155 | default: |
9156 | continue; | |
9157 | ||
066f4018 AM |
9158 | case R_PPC64_GOT16_HA: |
9159 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9160 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9161 | break; |
9162 | } | |
9163 | ||
9164 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9165 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9166 | r_symndx, ibfd)) | |
9167 | goto got_error_ret; | |
9168 | ||
6d5554a6 AM |
9169 | if (sym_sec == NULL |
9170 | || sym_sec->output_section == NULL | |
9171 | || discarded_section (sym_sec)) | |
9172 | continue; | |
9173 | ||
066f4018 AM |
9174 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
9175 | continue; | |
9176 | ||
9177 | if (h != NULL) | |
9178 | val = h->root.u.def.value; | |
9179 | else | |
9180 | val = sym->st_value; | |
133a1f60 | 9181 | val += rel->r_addend; |
066f4018 AM |
9182 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9183 | ||
bb22a418 AM |
9184 | /* Fudge factor to allow for the fact that the preliminary layout |
9185 | isn't exact. Reduce limits by this factor. */ | |
9186 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9187 | ||
066f4018 AM |
9188 | switch (r_type) |
9189 | { | |
9190 | default: | |
9191 | continue; | |
9192 | ||
066f4018 | 9193 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9194 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9195 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9196 | continue; |
9197 | ||
9198 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9199 | rel->r_offset & ~3, 4)) | |
9200 | goto got_error_ret; | |
9201 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9202 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9203 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9204 | continue; | |
9205 | break; | |
9206 | ||
9207 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9208 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9209 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9210 | continue; |
9211 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9212 | rel->r_offset & ~3, 4)) | |
9213 | goto got_error_ret; | |
9214 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9215 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9216 | continue; |
9217 | break; | |
4a421c53 AM |
9218 | |
9219 | case R_PPC64_GOT_PCREL34: | |
9220 | pc = rel->r_offset; | |
9221 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9222 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9223 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9224 | continue; |
9225 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9226 | rel->r_offset & ~3, 8)) | |
9227 | goto got_error_ret; | |
9228 | insn = bfd_get_32 (ibfd, buf); | |
9229 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9230 | continue; | |
9231 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9232 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9233 | continue; |
9234 | break; | |
066f4018 | 9235 | } |
bb22a418 | 9236 | #undef LIMIT_ADJUST |
066f4018 AM |
9237 | |
9238 | if (h != NULL) | |
9239 | ent = h->got.glist; | |
9240 | else | |
9241 | { | |
9242 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9243 | ent = local_got_ents[r_symndx]; | |
9244 | } | |
9245 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9246 | if (ent->addend == rel->r_addend |
066f4018 AM |
9247 | && ent->owner == ibfd |
9248 | && ent->tls_type == 0) | |
9249 | break; | |
9250 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9251 | ent->got.refcount -= 1; | |
9252 | } | |
9253 | ||
9254 | if (elf_section_data (sec)->relocs != relstart) | |
9255 | free (relstart); | |
9256 | } | |
9257 | ||
9258 | if (local_syms != NULL | |
9259 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9260 | { | |
9261 | if (!info->keep_memory) | |
9262 | free (local_syms); | |
9263 | else | |
9264 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9265 | } | |
9266 | } | |
9267 | ||
c5614fa4 AM |
9268 | return TRUE; |
9269 | } | |
9270 | ||
1bbe0902 AM |
9271 | /* Return true iff input section I references the TOC using |
9272 | instructions limited to +/-32k offsets. */ | |
9273 | ||
9274 | bfd_boolean | |
9275 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9276 | { | |
9277 | return (is_ppc64_elf (i->owner) | |
9278 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9279 | } | |
9280 | ||
927be08e AM |
9281 | /* Allocate space for one GOT entry. */ |
9282 | ||
9283 | static void | |
9284 | allocate_got (struct elf_link_hash_entry *h, | |
9285 | struct bfd_link_info *info, | |
9286 | struct got_entry *gent) | |
9287 | { | |
9288 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9289 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9290 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9291 | ? 16 : 8); | |
9292 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9293 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9294 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9295 | ||
9296 | gent->got.offset = got->size; | |
9297 | got->size += entsize; | |
9298 | ||
19e08130 | 9299 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9300 | { |
33e44f2e | 9301 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9302 | htab->got_reli_size += rentsize; |
927be08e | 9303 | } |
f15d0b54 | 9304 | else if (((bfd_link_pic (info) |
f749f26e | 9305 | && !(gent->tls_type != 0 |
f15d0b54 AM |
9306 | && bfd_link_executable (info) |
9307 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9308 | || (htab->elf.dynamic_sections_created |
9309 | && h->dynindx != -1 | |
9310 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9311 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9312 | { |
19e08130 | 9313 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9314 | relgot->size += rentsize; |
927be08e AM |
9315 | } |
9316 | } | |
9317 | ||
7865406b AM |
9318 | /* This function merges got entries in the same toc group. */ |
9319 | ||
9320 | static void | |
9321 | merge_got_entries (struct got_entry **pent) | |
9322 | { | |
9323 | struct got_entry *ent, *ent2; | |
9324 | ||
9325 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9326 | if (!ent->is_indirect) | |
9327 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9328 | if (!ent2->is_indirect | |
9329 | && ent2->addend == ent->addend | |
9330 | && ent2->tls_type == ent->tls_type | |
9331 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9332 | { | |
9333 | ent2->is_indirect = TRUE; | |
9334 | ent2->got.ent = ent; | |
9335 | } | |
9336 | } | |
9337 | ||
46434633 | 9338 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9339 | |
9340 | static bfd_boolean | |
46434633 AM |
9341 | ensure_undef_dynamic (struct bfd_link_info *info, |
9342 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9343 | { |
9344 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9345 | ||
9346 | if (htab->dynamic_sections_created | |
46434633 AM |
9347 | && ((info->dynamic_undefined_weak != 0 |
9348 | && h->root.type == bfd_link_hash_undefweak) | |
9349 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9350 | && h->dynindx == -1 |
9351 | && !h->forced_local | |
9352 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9353 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9354 | return TRUE; | |
9355 | } | |
9356 | ||
65f38f15 AM |
9357 | /* Allocate space in .plt, .got and associated reloc sections for |
9358 | dynamic relocs. */ | |
5bd4f169 | 9359 | |
b34976b6 | 9360 | static bfd_boolean |
4ce794b7 | 9361 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9362 | { |
65f38f15 AM |
9363 | struct bfd_link_info *info; |
9364 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9365 | asection *s; |
65f38f15 | 9366 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9367 | struct got_entry **pgent, *gent; |
5bd4f169 | 9368 | |
e92d460e | 9369 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9370 | return TRUE; |
5bd4f169 | 9371 | |
65f38f15 AM |
9372 | info = (struct bfd_link_info *) inf; |
9373 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9374 | if (htab == NULL) |
9375 | return FALSE; | |
5bd4f169 | 9376 | |
951fd09b AM |
9377 | eh = (struct ppc_link_hash_entry *) h; |
9378 | /* Run through the TLS GD got entries first if we're changing them | |
9379 | to TPREL. */ | |
b00a0a86 | 9380 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9381 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9382 | if (gent->got.refcount > 0 | |
9383 | && (gent->tls_type & TLS_GD) != 0) | |
9384 | { | |
9385 | /* This was a GD entry that has been converted to TPREL. If | |
9386 | there happens to be a TPREL entry we can use that one. */ | |
9387 | struct got_entry *ent; | |
9388 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9389 | if (ent->got.refcount > 0 | |
9390 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9391 | && ent->addend == gent->addend |
9392 | && ent->owner == gent->owner) | |
951fd09b AM |
9393 | { |
9394 | gent->got.refcount = 0; | |
9395 | break; | |
9396 | } | |
9397 | ||
9398 | /* If not, then we'll be using our own TPREL entry. */ | |
9399 | if (gent->got.refcount != 0) | |
9400 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9401 | } | |
9402 | ||
7865406b AM |
9403 | /* Remove any list entry that won't generate a word in the GOT before |
9404 | we call merge_got_entries. Otherwise we risk merging to empty | |
9405 | entries. */ | |
0b8bcf0d AM |
9406 | pgent = &h->got.glist; |
9407 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9408 | if (gent->got.refcount > 0) |
7865406b AM |
9409 | { |
9410 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9411 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9412 | { |
9413 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9414 | *pgent = gent->next; | |
9415 | } | |
9416 | else | |
9417 | pgent = &gent->next; | |
9418 | } | |
9419 | else | |
9420 | *pgent = gent->next; | |
9421 | ||
9422 | if (!htab->do_multi_toc) | |
9423 | merge_got_entries (&h->got.glist); | |
9424 | ||
9425 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9426 | if (!gent->is_indirect) | |
411e1bfb | 9427 | { |
ec73ddcd AM |
9428 | /* Ensure we catch all the cases where this symbol should |
9429 | be made dynamic. */ | |
46434633 | 9430 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9431 | return FALSE; |
65f38f15 | 9432 | |
0c8d6e5c | 9433 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9434 | abort (); |
0ffa91dd | 9435 | |
927be08e | 9436 | allocate_got (h, info, gent); |
411e1bfb | 9437 | } |
65f38f15 | 9438 | |
954b63d4 AM |
9439 | /* If no dynamic sections we can't have dynamic relocs, except for |
9440 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9441 | if (!htab->elf.dynamic_sections_created |
9442 | && h->type != STT_GNU_IFUNC) | |
9443 | eh->dyn_relocs = NULL; | |
9444 | ||
529fe20e AM |
9445 | /* Discard relocs on undefined symbols that must be local. */ |
9446 | else if (h->root.type == bfd_link_hash_undefined | |
9447 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9448 | eh->dyn_relocs = NULL; | |
9449 | ||
954b63d4 AM |
9450 | /* Also discard relocs on undefined weak syms with non-default |
9451 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9452 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
9453 | eh->dyn_relocs = NULL; |
9454 | ||
8a2058b5 | 9455 | if (eh->dyn_relocs != NULL) |
65f38f15 | 9456 | { |
8a2058b5 AM |
9457 | struct elf_dyn_relocs *p, **pp; |
9458 | ||
57e7d118 AM |
9459 | /* In the shared -Bsymbolic case, discard space allocated for |
9460 | dynamic pc-relative relocs against symbols which turn out to | |
9461 | be defined in regular objects. For the normal shared case, | |
9462 | discard space for relocs that have become local due to symbol | |
9463 | visibility changes. */ | |
57e7d118 | 9464 | if (bfd_link_pic (info)) |
65f38f15 | 9465 | { |
57e7d118 AM |
9466 | /* Relocs that use pc_count are those that appear on a call |
9467 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9468 | can be generated via assembly. We want calls to | |
9469 | protected symbols to resolve directly to the function | |
9470 | rather than going via the plt. If people want function | |
9471 | pointer comparisons to work as expected then they should | |
9472 | avoid writing weird assembly. */ | |
9473 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9474 | { | |
57e7d118 AM |
9475 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
9476 | { | |
9477 | p->count -= p->pc_count; | |
9478 | p->pc_count = 0; | |
9479 | if (p->count == 0) | |
9480 | *pp = p->next; | |
9481 | else | |
9482 | pp = &p->next; | |
9483 | } | |
9484 | } | |
65f38f15 | 9485 | |
954b63d4 | 9486 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 9487 | { |
ec73ddcd AM |
9488 | /* Ensure we catch all the cases where this symbol |
9489 | should be made dynamic. */ | |
46434633 | 9490 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9491 | return FALSE; |
5bd4f169 | 9492 | } |
65f38f15 | 9493 | } |
ec73ddcd AM |
9494 | |
9495 | /* For a fixed position executable, discard space for | |
9496 | relocs against symbols which are not dynamic. */ | |
9497 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9498 | { |
529fe20e AM |
9499 | if (h->dynamic_adjusted |
9500 | && !h->def_regular | |
9501 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9502 | { |
ec73ddcd AM |
9503 | /* Ensure we catch all the cases where this symbol |
9504 | should be made dynamic. */ | |
46434633 | 9505 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9506 | return FALSE; |
dfbb6ac9 | 9507 | |
ec73ddcd | 9508 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 AM |
9509 | if (h->dynindx == -1) |
9510 | eh->dyn_relocs = NULL; | |
9511 | } | |
9512 | else | |
8a2058b5 | 9513 | eh->dyn_relocs = NULL; |
57e7d118 AM |
9514 | } |
9515 | ||
9516 | /* Finally, allocate space. */ | |
9517 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9518 | { | |
9519 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9520 | if (eh->elf.type == STT_GNU_IFUNC) | |
9521 | sreloc = htab->elf.irelplt; | |
9522 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9523 | } |
65f38f15 | 9524 | } |
57e7d118 | 9525 | |
2d7ad24e AM |
9526 | /* We might need a PLT entry when the symbol |
9527 | a) is dynamic, or | |
9528 | b) is an ifunc, or | |
9529 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9530 | d) has plt16 relocs and we are linking statically. */ | |
9531 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9532 | || h->type == STT_GNU_IFUNC | |
9533 | || (h->needs_plt && h->dynamic_adjusted) | |
9534 | || (h->needs_plt | |
9535 | && h->def_regular | |
9536 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9537 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
9538 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
9539 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 9540 | { |
57e7d118 AM |
9541 | struct plt_entry *pent; |
9542 | bfd_boolean doneone = FALSE; | |
9543 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9544 | if (pent->plt.refcount > 0) | |
9545 | { | |
9546 | if (!htab->elf.dynamic_sections_created | |
9547 | || h->dynindx == -1) | |
9548 | { | |
2d7ad24e AM |
9549 | if (h->type == STT_GNU_IFUNC) |
9550 | { | |
9551 | s = htab->elf.iplt; | |
9552 | pent->plt.offset = s->size; | |
9553 | s->size += PLT_ENTRY_SIZE (htab); | |
9554 | s = htab->elf.irelplt; | |
9555 | } | |
9556 | else | |
9557 | { | |
9558 | s = htab->pltlocal; | |
9559 | pent->plt.offset = s->size; | |
9560 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9561 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9562 | } | |
57e7d118 AM |
9563 | } |
9564 | else | |
9565 | { | |
9566 | /* If this is the first .plt entry, make room for the special | |
9567 | first entry. */ | |
9568 | s = htab->elf.splt; | |
9569 | if (s->size == 0) | |
9570 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9571 | |
57e7d118 | 9572 | pent->plt.offset = s->size; |
65f38f15 | 9573 | |
57e7d118 AM |
9574 | /* Make room for this entry. */ |
9575 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9576 | |
57e7d118 AM |
9577 | /* Make room for the .glink code. */ |
9578 | s = htab->glink; | |
9579 | if (s->size == 0) | |
9e390558 | 9580 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9581 | if (htab->opd_abi) |
9582 | { | |
9583 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9584 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9585 | s->size += 4; |
9586 | s->size += 2*4; | |
9587 | } | |
9588 | else | |
9589 | s->size += 4; | |
65f38f15 | 9590 | |
57e7d118 AM |
9591 | /* We also need to make an entry in the .rela.plt section. */ |
9592 | s = htab->elf.srelplt; | |
9593 | } | |
2d7ad24e AM |
9594 | if (s != NULL) |
9595 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9596 | doneone = TRUE; |
9597 | } | |
9598 | else | |
9599 | pent->plt.offset = (bfd_vma) -1; | |
9600 | if (!doneone) | |
9601 | { | |
9602 | h->plt.plist = NULL; | |
9603 | h->needs_plt = 0; | |
9604 | } | |
65f38f15 | 9605 | } |
57e7d118 | 9606 | else |
65f38f15 | 9607 | { |
57e7d118 AM |
9608 | h->plt.plist = NULL; |
9609 | h->needs_plt = 0; | |
65f38f15 AM |
9610 | } |
9611 | ||
b34976b6 | 9612 | return TRUE; |
65f38f15 AM |
9613 | } |
9614 | ||
9e390558 AM |
9615 | #define PPC_LO(v) ((v) & 0xffff) |
9616 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9617 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9618 | #define D34(v) \ |
9619 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9620 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9621 | |
a345bc8d AM |
9622 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9623 | to set up space for global entry stubs. These are put in glink, | |
9624 | after the branch table. */ | |
65f38f15 | 9625 | |
b34976b6 | 9626 | static bfd_boolean |
a345bc8d | 9627 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9628 | { |
a345bc8d AM |
9629 | struct bfd_link_info *info; |
9630 | struct ppc_link_hash_table *htab; | |
9631 | struct plt_entry *pent; | |
9e390558 | 9632 | asection *s, *plt; |
65f38f15 | 9633 | |
a345bc8d AM |
9634 | if (h->root.type == bfd_link_hash_indirect) |
9635 | return TRUE; | |
65f38f15 | 9636 | |
a345bc8d AM |
9637 | if (!h->pointer_equality_needed) |
9638 | return TRUE; | |
65f38f15 | 9639 | |
a345bc8d AM |
9640 | if (h->def_regular) |
9641 | return TRUE; | |
65f38f15 | 9642 | |
a345bc8d AM |
9643 | info = inf; |
9644 | htab = ppc_hash_table (info); | |
9645 | if (htab == NULL) | |
9646 | return FALSE; | |
9647 | ||
9e390558 AM |
9648 | s = htab->global_entry; |
9649 | plt = htab->elf.splt; | |
a345bc8d AM |
9650 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9651 | if (pent->plt.offset != (bfd_vma) -1 | |
9652 | && pent->addend == 0) | |
9653 | { | |
afe397ea AM |
9654 | /* For ELFv2, if this symbol is not defined in a regular file |
9655 | and we are not generating a shared library or pie, then we | |
9656 | need to define the symbol in the executable on a call stub. | |
9657 | This is to avoid text relocations. */ | |
9e390558 AM |
9658 | bfd_vma off, stub_align, stub_off, stub_size; |
9659 | unsigned int align_power; | |
9660 | ||
9661 | stub_size = 16; | |
9662 | stub_off = s->size; | |
9663 | if (htab->params->plt_stub_align >= 0) | |
9664 | align_power = htab->params->plt_stub_align; | |
9665 | else | |
9666 | align_power = -htab->params->plt_stub_align; | |
9667 | /* Setting section alignment is delayed until we know it is | |
9668 | non-empty. Otherwise the .text output section will be | |
9669 | aligned at least to plt_stub_align even when no global | |
9670 | entry stubs are needed. */ | |
9671 | if (s->alignment_power < align_power) | |
9672 | s->alignment_power = align_power; | |
9673 | stub_align = (bfd_vma) 1 << align_power; | |
9674 | if (htab->params->plt_stub_align >= 0 | |
9675 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9676 | - (stub_off & -stub_align)) | |
9677 | > ((stub_size - 1) & -stub_align))) | |
9678 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9679 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9680 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9681 | /* Note that for --plt-stub-align negative we have a possible | |
9682 | dependency between stub offset and size. Break that | |
9683 | dependency by assuming the max stub size when calculating | |
9684 | the stub offset. */ | |
9685 | if (PPC_HA (off) == 0) | |
9686 | stub_size -= 4; | |
8a2058b5 | 9687 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9688 | h->root.u.def.section = s; |
9e390558 AM |
9689 | h->root.u.def.value = stub_off; |
9690 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9691 | break; |
9692 | } | |
9693 | return TRUE; | |
9694 | } | |
9695 | ||
9696 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9697 | read-only sections. */ | |
9698 | ||
9699 | static bfd_boolean | |
98bbb1b8 | 9700 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 9701 | { |
98bbb1b8 AM |
9702 | asection *sec; |
9703 | ||
a345bc8d AM |
9704 | if (h->root.type == bfd_link_hash_indirect) |
9705 | return TRUE; | |
9706 | ||
98bbb1b8 AM |
9707 | sec = readonly_dynrelocs (h); |
9708 | if (sec != NULL) | |
a345bc8d | 9709 | { |
98bbb1b8 AM |
9710 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
9711 | ||
9712 | info->flags |= DF_TEXTREL; | |
2cdcc330 AM |
9713 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT'" |
9714 | " in read-only section `%pA'\n"), | |
9715 | sec->owner, h->root.root.string, sec); | |
a345bc8d AM |
9716 | |
9717 | /* Not an error, just cut short the traversal. */ | |
9718 | return FALSE; | |
65f38f15 | 9719 | } |
b34976b6 | 9720 | return TRUE; |
65f38f15 AM |
9721 | } |
9722 | ||
9723 | /* Set the sizes of the dynamic sections. */ | |
9724 | ||
b34976b6 | 9725 | static bfd_boolean |
ee67d69a | 9726 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9727 | struct bfd_link_info *info) |
65f38f15 AM |
9728 | { |
9729 | struct ppc_link_hash_table *htab; | |
9730 | bfd *dynobj; | |
9731 | asection *s; | |
b34976b6 | 9732 | bfd_boolean relocs; |
65f38f15 | 9733 | bfd *ibfd; |
7865406b | 9734 | struct got_entry *first_tlsld; |
65f38f15 AM |
9735 | |
9736 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9737 | if (htab == NULL) |
9738 | return FALSE; | |
9739 | ||
65f38f15 AM |
9740 | dynobj = htab->elf.dynobj; |
9741 | if (dynobj == NULL) | |
9742 | abort (); | |
9743 | ||
9744 | if (htab->elf.dynamic_sections_created) | |
9745 | { | |
9746 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9747 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9748 | { |
3d4d4302 | 9749 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9750 | if (s == NULL) |
9751 | abort (); | |
eea6121a | 9752 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9753 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9754 | } | |
9755 | } | |
9756 | ||
9757 | /* Set up .got offsets for local syms, and space for local dynamic | |
9758 | relocs. */ | |
c72f2fb2 | 9759 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9760 | { |
411e1bfb AM |
9761 | struct got_entry **lgot_ents; |
9762 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9763 | struct plt_entry **local_plt; |
9764 | struct plt_entry **end_local_plt; | |
f961d9dd | 9765 | unsigned char *lgot_masks; |
65f38f15 AM |
9766 | bfd_size_type locsymcount; |
9767 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9768 | |
0c8d6e5c | 9769 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9770 | continue; |
9771 | ||
9772 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9773 | { | |
19e08130 | 9774 | struct ppc_dyn_relocs *p; |
65f38f15 | 9775 | |
6edfbbad | 9776 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9777 | { |
ec338859 AM |
9778 | if (!bfd_is_abs_section (p->sec) |
9779 | && bfd_is_abs_section (p->sec->output_section)) | |
9780 | { | |
9781 | /* Input section has been discarded, either because | |
9782 | it is a copy of a linkonce section or due to | |
9783 | linker script /DISCARD/, so we'll be discarding | |
9784 | the relocs too. */ | |
9785 | } | |
248866a8 | 9786 | else if (p->count != 0) |
ec338859 | 9787 | { |
19e08130 AM |
9788 | asection *srel = elf_section_data (p->sec)->sreloc; |
9789 | if (p->ifunc) | |
33e44f2e | 9790 | srel = htab->elf.irelplt; |
eea6121a | 9791 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9792 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9793 | info->flags |= DF_TEXTREL; | |
ec338859 | 9794 | } |
65f38f15 AM |
9795 | } |
9796 | } | |
9797 | ||
411e1bfb AM |
9798 | lgot_ents = elf_local_got_ents (ibfd); |
9799 | if (!lgot_ents) | |
65f38f15 AM |
9800 | continue; |
9801 | ||
0ffa91dd | 9802 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9803 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9804 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9805 | local_plt = (struct plt_entry **) end_lgot_ents; |
9806 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9807 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9808 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9809 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9810 | { |
0b8bcf0d | 9811 | struct got_entry **pent, *ent; |
411e1bfb | 9812 | |
0b8bcf0d AM |
9813 | pent = lgot_ents; |
9814 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9815 | if (ent->got.refcount > 0) |
9816 | { | |
e7b938ca | 9817 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9818 | { |
927be08e | 9819 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9820 | *pent = ent->next; |
411e1bfb AM |
9821 | } |
9822 | else | |
9823 | { | |
19e08130 AM |
9824 | unsigned int ent_size = 8; |
9825 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9826 | ||
eea6121a | 9827 | ent->got.offset = s->size; |
e7b938ca | 9828 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9829 | { |
19e08130 AM |
9830 | ent_size *= 2; |
9831 | rel_size *= 2; | |
9832 | } | |
9833 | s->size += ent_size; | |
37da22e5 | 9834 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 9835 | { |
33e44f2e | 9836 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9837 | htab->got_reli_size += rel_size; |
9838 | } | |
93370e8e AM |
9839 | else if (bfd_link_pic (info) |
9840 | && !(ent->tls_type != 0 | |
9841 | && bfd_link_executable (info))) | |
19e08130 AM |
9842 | { |
9843 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9844 | srel->size += rel_size; | |
927be08e | 9845 | } |
0b8bcf0d | 9846 | pent = &ent->next; |
411e1bfb AM |
9847 | } |
9848 | } | |
9849 | else | |
0b8bcf0d | 9850 | *pent = ent->next; |
65f38f15 | 9851 | } |
e054468f | 9852 | |
2d7ad24e AM |
9853 | /* Allocate space for plt calls to local syms. */ |
9854 | lgot_masks = (unsigned char *) end_local_plt; | |
9855 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
9856 | { |
9857 | struct plt_entry *ent; | |
9858 | ||
9859 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9860 | if (ent->plt.refcount > 0) | |
9861 | { | |
2d7ad24e AM |
9862 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
9863 | { | |
9864 | s = htab->elf.iplt; | |
9865 | ent->plt.offset = s->size; | |
9866 | s->size += PLT_ENTRY_SIZE (htab); | |
9867 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
9868 | } | |
3e04d765 AM |
9869 | else if (htab->can_convert_all_inline_plt |
9870 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
9871 | ent->plt.offset = (bfd_vma) -1; |
9872 | else | |
9873 | { | |
9874 | s = htab->pltlocal; | |
9875 | ent->plt.offset = s->size; | |
9876 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9877 | if (bfd_link_pic (info)) | |
9878 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
9879 | } | |
e054468f AM |
9880 | } |
9881 | else | |
9882 | ent->plt.offset = (bfd_vma) -1; | |
9883 | } | |
65f38f15 AM |
9884 | } |
9885 | ||
9886 | /* Allocate global sym .plt and .got entries, and space for global | |
9887 | sym dynamic relocs. */ | |
4ce794b7 | 9888 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 9889 | |
0e1862bb | 9890 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 9891 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 9892 | |
7865406b | 9893 | first_tlsld = NULL; |
c72f2fb2 | 9894 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9895 | { |
7865406b AM |
9896 | struct got_entry *ent; |
9897 | ||
0c8d6e5c | 9898 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9899 | continue; |
9900 | ||
7865406b AM |
9901 | ent = ppc64_tlsld_got (ibfd); |
9902 | if (ent->got.refcount > 0) | |
102890f0 | 9903 | { |
7865406b | 9904 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9905 | { |
7865406b AM |
9906 | ent->is_indirect = TRUE; |
9907 | ent->got.ent = first_tlsld; | |
9908 | } | |
9909 | else | |
9910 | { | |
9911 | if (first_tlsld == NULL) | |
9912 | first_tlsld = ent; | |
9913 | s = ppc64_elf_tdata (ibfd)->got; | |
9914 | ent->got.offset = s->size; | |
9915 | ent->owner = ibfd; | |
9916 | s->size += 16; | |
f749f26e | 9917 | if (bfd_link_dll (info)) |
7865406b AM |
9918 | { |
9919 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9920 | srel->size += sizeof (Elf64_External_Rela); | |
9921 | } | |
102890f0 AM |
9922 | } |
9923 | } | |
9924 | else | |
7865406b | 9925 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9926 | } |
9927 | ||
65f38f15 AM |
9928 | /* We now have determined the sizes of the various dynamic sections. |
9929 | Allocate memory for them. */ | |
b34976b6 | 9930 | relocs = FALSE; |
65f38f15 AM |
9931 | for (s = dynobj->sections; s != NULL; s = s->next) |
9932 | { | |
9933 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9934 | continue; | |
9935 | ||
4ce794b7 | 9936 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9937 | /* These haven't been allocated yet; don't strip. */ |
9938 | continue; | |
33e44f2e AM |
9939 | else if (s == htab->elf.sgot |
9940 | || s == htab->elf.splt | |
9941 | || s == htab->elf.iplt | |
2d7ad24e | 9942 | || s == htab->pltlocal |
c456f082 | 9943 | || s == htab->glink |
9e390558 | 9944 | || s == htab->global_entry |
5474d94f AM |
9945 | || s == htab->elf.sdynbss |
9946 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
9947 | { |
9948 | /* Strip this section if we don't need it; see the | |
9949 | comment below. */ | |
5bd4f169 | 9950 | } |
58d180e8 AM |
9951 | else if (s == htab->glink_eh_frame) |
9952 | { | |
9953 | if (!bfd_is_abs_section (s->output_section)) | |
9954 | /* Not sized yet. */ | |
9955 | continue; | |
9956 | } | |
70cc837d | 9957 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9958 | { |
c456f082 | 9959 | if (s->size != 0) |
5bd4f169 | 9960 | { |
33e44f2e | 9961 | if (s != htab->elf.srelplt) |
b34976b6 | 9962 | relocs = TRUE; |
5bd4f169 AM |
9963 | |
9964 | /* We use the reloc_count field as a counter if we need | |
9965 | to copy relocs into the output file. */ | |
9966 | s->reloc_count = 0; | |
9967 | } | |
9968 | } | |
65f38f15 | 9969 | else |
5bd4f169 AM |
9970 | { |
9971 | /* It's not one of our sections, so don't allocate space. */ | |
9972 | continue; | |
9973 | } | |
9974 | ||
eea6121a | 9975 | if (s->size == 0) |
5bd4f169 | 9976 | { |
c456f082 AM |
9977 | /* If we don't need this section, strip it from the |
9978 | output file. This is mostly to handle .rela.bss and | |
9979 | .rela.plt. We must create both sections in | |
9980 | create_dynamic_sections, because they must be created | |
9981 | before the linker maps input sections to output | |
9982 | sections. The linker does that before | |
9983 | adjust_dynamic_symbol is called, and it is that | |
9984 | function which decides whether anything needs to go | |
9985 | into these sections. */ | |
8423293d | 9986 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9987 | continue; |
9988 | } | |
9989 | ||
06bcf541 AM |
9990 | if (bfd_is_abs_section (s->output_section)) |
9991 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
9992 | s->name); | |
9993 | ||
c456f082 | 9994 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9995 | continue; |
9996 | ||
65f38f15 AM |
9997 | /* Allocate memory for the section contents. We use bfd_zalloc |
9998 | here in case unused entries are not reclaimed before the | |
9999 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10000 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10001 | sections instead of garbage. | |
10002 | We also rely on the section contents being zero when writing | |
5474d94f | 10003 | the GOT and .dynrelro. */ |
eea6121a | 10004 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10005 | if (s->contents == NULL) |
b34976b6 | 10006 | return FALSE; |
5bd4f169 AM |
10007 | } |
10008 | ||
c72f2fb2 | 10009 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10010 | { |
0c8d6e5c | 10011 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10012 | continue; |
10013 | ||
e717da7e | 10014 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10015 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10016 | { |
eea6121a | 10017 | if (s->size == 0) |
8423293d | 10018 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10019 | else |
10020 | { | |
eea6121a | 10021 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10022 | if (s->contents == NULL) |
10023 | return FALSE; | |
10024 | } | |
10025 | } | |
10026 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10027 | if (s != NULL) | |
10028 | { | |
eea6121a | 10029 | if (s->size == 0) |
8423293d | 10030 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10031 | else |
10032 | { | |
eea6121a | 10033 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10034 | if (s->contents == NULL) |
10035 | return FALSE; | |
10036 | relocs = TRUE; | |
10037 | s->reloc_count = 0; | |
10038 | } | |
10039 | } | |
10040 | } | |
10041 | ||
e86ce104 | 10042 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10043 | { |
e8910a83 AM |
10044 | bfd_boolean tls_opt; |
10045 | ||
5bd4f169 AM |
10046 | /* Add some entries to the .dynamic section. We fill in the |
10047 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10048 | must add the entries now so that we get the correct size for | |
10049 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10050 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10051 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10052 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10053 | |
0e1862bb | 10054 | if (bfd_link_executable (info)) |
5bd4f169 | 10055 | { |
dc810e39 | 10056 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10057 | return FALSE; |
5bd4f169 AM |
10058 | } |
10059 | ||
33e44f2e | 10060 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10061 | { |
dc810e39 AM |
10062 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10063 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10064 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10065 | || !add_dynamic_entry (DT_JMPREL, 0) |
10066 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10067 | return FALSE; |
5bd4f169 AM |
10068 | } |
10069 | ||
ee67d69a | 10070 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10071 | { |
10072 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10073 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10074 | return FALSE; |
19397422 AM |
10075 | } |
10076 | ||
7c9cf415 | 10077 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10078 | && htab->tls_get_addr_fd != NULL |
10079 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10080 | if (tls_opt || !htab->opd_abi) | |
10081 | { | |
10082 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10083 | return FALSE; | |
10084 | } | |
a7f2871e | 10085 | |
5bd4f169 AM |
10086 | if (relocs) |
10087 | { | |
dc810e39 AM |
10088 | if (!add_dynamic_entry (DT_RELA, 0) |
10089 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10090 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10091 | return FALSE; |
5bd4f169 | 10092 | |
65f38f15 AM |
10093 | /* If any dynamic relocs apply to a read-only section, |
10094 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10095 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10096 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10097 | |
65f38f15 | 10098 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10099 | { |
65f38f15 | 10100 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10101 | return FALSE; |
5bd4f169 | 10102 | } |
5bd4f169 | 10103 | } |
5bd4f169 | 10104 | } |
65f38f15 | 10105 | #undef add_dynamic_entry |
5bd4f169 | 10106 | |
b34976b6 | 10107 | return TRUE; |
5bd4f169 AM |
10108 | } |
10109 | ||
a345bc8d AM |
10110 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10111 | ||
10112 | static bfd_boolean | |
10113 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10114 | { | |
10115 | if (h->plt.plist != NULL | |
10116 | && !h->def_regular | |
10117 | && !h->pointer_equality_needed) | |
10118 | return FALSE; | |
10119 | ||
10120 | return _bfd_elf_hash_symbol (h); | |
10121 | } | |
10122 | ||
721956f4 | 10123 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10124 | |
4ce794b7 AM |
10125 | static inline enum ppc_stub_type |
10126 | ppc_type_of_stub (asection *input_sec, | |
10127 | const Elf_Internal_Rela *rel, | |
10128 | struct ppc_link_hash_entry **hash, | |
e054468f | 10129 | struct plt_entry **plt_ent, |
6911b7dc AM |
10130 | bfd_vma destination, |
10131 | unsigned long local_off) | |
5bd4f169 | 10132 | { |
721956f4 AM |
10133 | struct ppc_link_hash_entry *h = *hash; |
10134 | bfd_vma location; | |
10135 | bfd_vma branch_offset; | |
10136 | bfd_vma max_branch_offset; | |
4ce794b7 | 10137 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10138 | |
721956f4 AM |
10139 | if (h != NULL) |
10140 | { | |
e054468f | 10141 | struct plt_entry *ent; |
7fe2b9a6 | 10142 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10143 | if (h->oh != NULL |
10144 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10145 | { |
10146 | fdh = ppc_follow_link (h->oh); | |
10147 | *hash = fdh; | |
10148 | } | |
8387904d | 10149 | |
e054468f AM |
10150 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10151 | if (ent->addend == rel->r_addend | |
10152 | && ent->plt.offset != (bfd_vma) -1) | |
10153 | { | |
e054468f AM |
10154 | *plt_ent = ent; |
10155 | return ppc_stub_plt_call; | |
10156 | } | |
5bd4f169 | 10157 | |
7fe2b9a6 AM |
10158 | /* Here, we know we don't have a plt entry. If we don't have a |
10159 | either a defined function descriptor or a defined entry symbol | |
10160 | in a regular object file, then it is pointless trying to make | |
10161 | any other type of stub. */ | |
854b41e7 AM |
10162 | if (!is_static_defined (&fdh->elf) |
10163 | && !is_static_defined (&h->elf)) | |
721956f4 | 10164 | return ppc_stub_none; |
5d1634d7 | 10165 | } |
e054468f AM |
10166 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10167 | { | |
10168 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10169 | struct plt_entry **local_plt = (struct plt_entry **) | |
10170 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10171 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10172 | ||
10173 | if (local_plt[r_symndx] != NULL) | |
10174 | { | |
10175 | struct plt_entry *ent; | |
10176 | ||
10177 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10178 | if (ent->addend == rel->r_addend | |
10179 | && ent->plt.offset != (bfd_vma) -1) | |
10180 | { | |
10181 | *plt_ent = ent; | |
10182 | return ppc_stub_plt_call; | |
10183 | } | |
10184 | } | |
10185 | } | |
5d1634d7 | 10186 | |
721956f4 AM |
10187 | /* Determine where the call point is. */ |
10188 | location = (input_sec->output_offset | |
10189 | + input_sec->output_section->vma | |
10190 | + rel->r_offset); | |
5d1634d7 | 10191 | |
721956f4 AM |
10192 | branch_offset = destination - location; |
10193 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10194 | |
721956f4 AM |
10195 | /* Determine if a long branch stub is needed. */ |
10196 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10197 | if (r_type == R_PPC64_REL14 |
10198 | || r_type == R_PPC64_REL14_BRTAKEN | |
10199 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10200 | max_branch_offset = 1 << 15; |
5d1634d7 | 10201 | |
6911b7dc | 10202 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10203 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10204 | is needed later. */ | |
10205 | return ppc_stub_long_branch; | |
5d1634d7 | 10206 | |
721956f4 | 10207 | return ppc_stub_none; |
5d1634d7 AM |
10208 | } |
10209 | ||
f891966f AM |
10210 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10211 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10212 | . mflr %r12 | |
10213 | . bcl 20,31,1f | |
10214 | .1: mflr %r11 | |
10215 | . mtlr %r12 | |
05d0e962 | 10216 | . lis %r12,xxx-1b@highest |
f891966f | 10217 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10218 | . sldi %r12,%r12,32 |
f891966f | 10219 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10220 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10221 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10222 | |
10223 | static bfd_byte * | |
10224 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10225 | { | |
f891966f AM |
10226 | bfd_put_32 (abfd, MFLR_R12, p); |
10227 | p += 4; | |
10228 | bfd_put_32 (abfd, BCL_20_31, p); | |
10229 | p += 4; | |
10230 | bfd_put_32 (abfd, MFLR_R11, p); | |
10231 | p += 4; | |
10232 | bfd_put_32 (abfd, MTLR_R12, p); | |
10233 | p += 4; | |
05d0e962 AM |
10234 | if (off + 0x8000 < 0x10000) |
10235 | { | |
10236 | if (load) | |
10237 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10238 | else | |
10239 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10240 | p += 4; | |
10241 | } | |
10242 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10243 | { | |
10244 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10245 | p += 4; | |
10246 | if (load) | |
10247 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10248 | else | |
10249 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10250 | p += 4; | |
10251 | } | |
10252 | else | |
10253 | { | |
10254 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10255 | { | |
10256 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10257 | p += 4; | |
10258 | } | |
10259 | else | |
10260 | { | |
10261 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10262 | p += 4; | |
10263 | if (((off >> 32) & 0xffff) != 0) | |
10264 | { | |
10265 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10266 | p += 4; | |
10267 | } | |
10268 | } | |
10269 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10270 | { | |
10271 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10272 | p += 4; | |
10273 | } | |
10274 | if (PPC_HI (off) != 0) | |
10275 | { | |
10276 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10277 | p += 4; | |
10278 | } | |
10279 | if (PPC_LO (off) != 0) | |
10280 | { | |
10281 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10282 | p += 4; | |
10283 | } | |
10284 | if (load) | |
10285 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10286 | else | |
10287 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10288 | p += 4; | |
10289 | } | |
10290 | return p; | |
10291 | } | |
10292 | ||
10293 | static unsigned int | |
10294 | size_offset (bfd_vma off) | |
10295 | { | |
10296 | unsigned int size; | |
10297 | if (off + 0x8000 < 0x10000) | |
10298 | size = 4; | |
10299 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10300 | size = 8; | |
10301 | else | |
10302 | { | |
10303 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10304 | size = 4; | |
10305 | else | |
10306 | { | |
10307 | size = 4; | |
10308 | if (((off >> 32) & 0xffff) != 0) | |
10309 | size += 4; | |
10310 | } | |
10311 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10312 | size += 4; | |
10313 | if (PPC_HI (off) != 0) | |
10314 | size += 4; | |
10315 | if (PPC_LO (off) != 0) | |
10316 | size += 4; | |
10317 | size += 4; | |
10318 | } | |
f891966f | 10319 | return size + 16; |
05d0e962 AM |
10320 | } |
10321 | ||
3d58e1fc AM |
10322 | static unsigned int |
10323 | num_relocs_for_offset (bfd_vma off) | |
10324 | { | |
10325 | unsigned int num_rel; | |
10326 | if (off + 0x8000 < 0x10000) | |
10327 | num_rel = 1; | |
10328 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10329 | num_rel = 2; | |
10330 | else | |
10331 | { | |
10332 | num_rel = 1; | |
10333 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10334 | && ((off >> 32) & 0xffff) != 0) | |
10335 | num_rel += 1; | |
10336 | if (PPC_HI (off) != 0) | |
10337 | num_rel += 1; | |
10338 | if (PPC_LO (off) != 0) | |
10339 | num_rel += 1; | |
10340 | } | |
10341 | return num_rel; | |
10342 | } | |
10343 | ||
10344 | static Elf_Internal_Rela * | |
10345 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10346 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10347 | { | |
10348 | bfd_vma relative_targ = targ - (roff - 8); | |
10349 | if (bfd_big_endian (info->output_bfd)) | |
10350 | roff += 2; | |
10351 | r->r_offset = roff; | |
10352 | r->r_addend = relative_targ + roff; | |
10353 | if (off + 0x8000 < 0x10000) | |
10354 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10355 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10356 | { | |
10357 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10358 | ++r; | |
10359 | roff += 4; | |
10360 | r->r_offset = roff; | |
10361 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10362 | r->r_addend = relative_targ + roff; | |
10363 | } | |
10364 | else | |
10365 | { | |
10366 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10367 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10368 | else | |
10369 | { | |
10370 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10371 | if (((off >> 32) & 0xffff) != 0) | |
10372 | { | |
10373 | ++r; | |
10374 | roff += 4; | |
10375 | r->r_offset = roff; | |
10376 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10377 | r->r_addend = relative_targ + roff; | |
10378 | } | |
10379 | } | |
10380 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10381 | roff += 4; | |
10382 | if (PPC_HI (off) != 0) | |
10383 | { | |
10384 | ++r; | |
10385 | roff += 4; | |
10386 | r->r_offset = roff; | |
10387 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10388 | r->r_addend = relative_targ + roff; | |
10389 | } | |
10390 | if (PPC_LO (off) != 0) | |
10391 | { | |
10392 | ++r; | |
10393 | roff += 4; | |
10394 | r->r_offset = roff; | |
10395 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10396 | r->r_addend = relative_targ + roff; | |
10397 | } | |
10398 | } | |
10399 | return r; | |
10400 | } | |
10401 | ||
04bdff6a AM |
10402 | static bfd_byte * |
10403 | build_powerxx_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, | |
10404 | bfd_boolean load) | |
10405 | { | |
10406 | uint64_t insn; | |
10407 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10408 | { | |
10409 | off -= odd; | |
10410 | if (odd) | |
10411 | { | |
10412 | bfd_put_32 (abfd, NOP, p); | |
10413 | p += 4; | |
10414 | } | |
10415 | if (load) | |
10416 | insn = PLD_R12_PC; | |
10417 | else | |
10418 | insn = PADDI_R12_PC; | |
10419 | insn |= D34 (off); | |
10420 | bfd_put_32 (abfd, insn >> 32, p); | |
10421 | p += 4; | |
10422 | bfd_put_32 (abfd, insn, p); | |
10423 | } | |
10424 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10425 | for li is -0x8000, which when shifted by 34 and added gives a | |
10426 | minimum value of -0x2000200000000. The maximum value is | |
10427 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10428 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10429 | { | |
10430 | off -= 8 - odd; | |
10431 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10432 | p += 4; | |
10433 | if (!odd) | |
10434 | { | |
10435 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10436 | p += 4; | |
10437 | } | |
10438 | insn = PADDI_R12_PC | D34 (off); | |
10439 | bfd_put_32 (abfd, insn >> 32, p); | |
10440 | p += 4; | |
10441 | bfd_put_32 (abfd, insn, p); | |
10442 | p += 4; | |
10443 | if (odd) | |
10444 | { | |
10445 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10446 | p += 4; | |
10447 | } | |
10448 | if (load) | |
10449 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10450 | else | |
10451 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10452 | } | |
10453 | else | |
10454 | { | |
10455 | off -= odd + 8; | |
10456 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10457 | p += 4; | |
10458 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10459 | p += 4; | |
10460 | if (odd) | |
10461 | { | |
10462 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10463 | p += 4; | |
10464 | } | |
10465 | insn = PADDI_R12_PC | D34 (off); | |
10466 | bfd_put_32 (abfd, insn >> 32, p); | |
10467 | p += 4; | |
10468 | bfd_put_32 (abfd, insn, p); | |
10469 | p += 4; | |
10470 | if (!odd) | |
10471 | { | |
10472 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10473 | p += 4; | |
10474 | } | |
10475 | if (load) | |
10476 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10477 | else | |
10478 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10479 | } | |
10480 | p += 4; | |
10481 | return p; | |
10482 | } | |
10483 | ||
10484 | static unsigned int | |
10485 | size_powerxx_offset (bfd_vma off, int odd) | |
10486 | { | |
10487 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10488 | return odd + 8; | |
10489 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10490 | return 20; | |
10491 | else | |
10492 | return 24; | |
10493 | } | |
10494 | ||
10495 | static unsigned int | |
10496 | num_relocs_for_powerxx_offset (bfd_vma off, int odd) | |
10497 | { | |
10498 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10499 | return 1; | |
10500 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10501 | return 2; | |
10502 | else | |
10503 | return 3; | |
10504 | } | |
10505 | ||
10506 | static Elf_Internal_Rela * | |
10507 | emit_relocs_for_powerxx_offset (struct bfd_link_info *info, | |
10508 | Elf_Internal_Rela *r, bfd_vma roff, | |
10509 | bfd_vma targ, bfd_vma off, int odd) | |
10510 | { | |
10511 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10512 | roff += odd; | |
10513 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10514 | { | |
10515 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10516 | r->r_offset = roff + d_offset; | |
10517 | r->r_addend = targ + 8 - odd - d_offset; | |
10518 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10519 | ++r; | |
10520 | roff += 8 - odd; | |
10521 | } | |
10522 | else | |
10523 | { | |
10524 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10525 | r->r_offset = roff + d_offset; | |
10526 | r->r_addend = targ + 8 + odd - d_offset; | |
10527 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10528 | ++r; | |
10529 | roff += 4; | |
10530 | r->r_offset = roff + d_offset; | |
10531 | r->r_addend = targ + 4 + odd - d_offset; | |
10532 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10533 | ++r; | |
10534 | roff += 4 + odd; | |
10535 | } | |
10536 | r->r_offset = roff; | |
10537 | r->r_addend = targ; | |
10538 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10539 | return r; | |
10540 | } | |
10541 | ||
df136d64 AM |
10542 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10543 | ||
10544 | static bfd_byte * | |
10545 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10546 | { | |
10547 | delta /= 4; | |
10548 | if (delta < 64) | |
10549 | *eh++ = DW_CFA_advance_loc + delta; | |
10550 | else if (delta < 256) | |
10551 | { | |
10552 | *eh++ = DW_CFA_advance_loc1; | |
10553 | *eh++ = delta; | |
10554 | } | |
10555 | else if (delta < 65536) | |
10556 | { | |
10557 | *eh++ = DW_CFA_advance_loc2; | |
10558 | bfd_put_16 (abfd, delta, eh); | |
10559 | eh += 2; | |
10560 | } | |
10561 | else | |
10562 | { | |
10563 | *eh++ = DW_CFA_advance_loc4; | |
10564 | bfd_put_32 (abfd, delta, eh); | |
10565 | eh += 4; | |
10566 | } | |
10567 | return eh; | |
10568 | } | |
10569 | ||
10570 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10571 | ||
10572 | static unsigned int | |
10573 | eh_advance_size (unsigned int delta) | |
10574 | { | |
10575 | if (delta < 64 * 4) | |
10576 | /* DW_CFA_advance_loc+[1..63]. */ | |
10577 | return 1; | |
10578 | if (delta < 256 * 4) | |
10579 | /* DW_CFA_advance_loc1, byte. */ | |
10580 | return 2; | |
10581 | if (delta < 65536 * 4) | |
10582 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10583 | return 3; | |
10584 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10585 | return 5; | |
10586 | } | |
10587 | ||
794e51c0 AM |
10588 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10589 | to update a plt entry in one thread and have another thread see a | |
10590 | stale zero toc entry. To avoid this we need some sort of acquire | |
10591 | barrier in the call stub. One solution is to make the load of the | |
10592 | toc word seem to appear to depend on the load of the function entry | |
10593 | word. Another solution is to test for r2 being zero, and branch to | |
10594 | the appropriate glink entry if so. | |
10595 | ||
10596 | . fake dep barrier compare | |
71a39c98 AM |
10597 | . ld 12,xxx(2) ld 12,xxx(2) |
10598 | . mtctr 12 mtctr 12 | |
10599 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10600 | . add 2,2,11 cmpldi 2,0 |
10601 | . ld 2,xxx+8(2) bnectr+ | |
10602 | . bctr b <glink_entry> | |
10603 | ||
10604 | The solution involving the compare turns out to be faster, so | |
10605 | that's what we use unless the branch won't reach. */ | |
10606 | ||
10607 | #define ALWAYS_USE_FAKE_DEP 0 | |
10608 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10609 | |
794e51c0 AM |
10610 | static inline unsigned int |
10611 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10612 | struct ppc_stub_hash_entry *stub_entry, | |
10613 | bfd_vma off) | |
10614 | { | |
05d0e962 | 10615 | unsigned size; |
b9e5796b | 10616 | |
05d0e962 AM |
10617 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10618 | { | |
04bdff6a AM |
10619 | if (htab->powerxx_stubs) |
10620 | { | |
10621 | bfd_vma start = (stub_entry->stub_offset | |
10622 | + stub_entry->group->stub_sec->output_offset | |
10623 | + stub_entry->group->stub_sec->output_section->vma); | |
10624 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
10625 | start += 4; | |
10626 | size = 8 + size_powerxx_offset (off, start & 4); | |
10627 | } | |
10628 | else | |
10629 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10630 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10631 | size += 4; | |
10632 | return size; | |
10633 | } | |
10634 | ||
10635 | size = 12; | |
b9e5796b AM |
10636 | if (ALWAYS_EMIT_R2SAVE |
10637 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10638 | size += 4; | |
10639 | if (PPC_HA (off) != 0) | |
794e51c0 | 10640 | size += 4; |
b9e5796b AM |
10641 | if (htab->opd_abi) |
10642 | { | |
10643 | size += 4; | |
e7d1c40c | 10644 | if (htab->params->plt_static_chain) |
b9e5796b | 10645 | size += 4; |
bd4d2eaa AM |
10646 | if (htab->params->plt_thread_safe |
10647 | && htab->elf.dynamic_sections_created | |
10648 | && stub_entry->h != NULL | |
10649 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10650 | size += 8; |
e7d1c40c | 10651 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10652 | size += 4; |
10653 | } | |
794e51c0 AM |
10654 | if (stub_entry->h != NULL |
10655 | && (stub_entry->h == htab->tls_get_addr_fd | |
10656 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10657 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10658 | { |
10659 | size += 7 * 4; | |
e81b4c93 | 10660 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) |
407aa07c | 10661 | size += 6 * 4; |
f378ab09 | 10662 | } |
794e51c0 AM |
10663 | return size; |
10664 | } | |
10665 | ||
2420fff6 AM |
10666 | /* Depending on the sign of plt_stub_align: |
10667 | If positive, return the padding to align to a 2**plt_stub_align | |
10668 | boundary. | |
10669 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10670 | boundaries if we align, then return the padding needed to do so. */ | |
10671 | ||
794e51c0 AM |
10672 | static inline unsigned int |
10673 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10674 | struct ppc_stub_hash_entry *stub_entry, | |
10675 | bfd_vma plt_off) | |
10676 | { | |
2420fff6 | 10677 | int stub_align; |
1aa42141 | 10678 | unsigned stub_size; |
6f20ed8a | 10679 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10680 | |
2420fff6 AM |
10681 | if (htab->params->plt_stub_align >= 0) |
10682 | { | |
10683 | stub_align = 1 << htab->params->plt_stub_align; | |
10684 | if ((stub_off & (stub_align - 1)) != 0) | |
10685 | return stub_align - (stub_off & (stub_align - 1)); | |
10686 | return 0; | |
10687 | } | |
10688 | ||
10689 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 10690 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 10691 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10692 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10693 | return stub_align - (stub_off & (stub_align - 1)); |
10694 | return 0; | |
10695 | } | |
10696 | ||
10697 | /* Build a .plt call stub. */ | |
10698 | ||
10699 | static inline bfd_byte * | |
10700 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10701 | struct ppc_stub_hash_entry *stub_entry, | |
10702 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10703 | { | |
e7d1c40c | 10704 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10705 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10706 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10707 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10708 | && htab->elf.dynamic_sections_created | |
10709 | && stub_entry->h != NULL | |
10710 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10711 | bfd_boolean use_fake_dep = plt_thread_safe; |
10712 | bfd_vma cmp_branch_off = 0; | |
10713 | ||
10714 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10715 | && plt_load_toc |
794e51c0 | 10716 | && plt_thread_safe |
bd4d2eaa AM |
10717 | && !((stub_entry->h == htab->tls_get_addr_fd |
10718 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10719 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10720 | { |
10721 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10722 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10723 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10724 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10725 | bfd_vma to, from; |
10726 | ||
68d62958 AM |
10727 | if (pltindex > 32768) |
10728 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10729 | to = (glinkoff |
10730 | + htab->glink->output_offset | |
10731 | + htab->glink->output_section->vma); | |
6f20ed8a | 10732 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10733 | + 4 * (ALWAYS_EMIT_R2SAVE |
10734 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10735 | + 4 * (PPC_HA (offset) != 0) | |
10736 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10737 | != PPC_HA (offset)) | |
10738 | + 4 * (plt_static_chain != 0) | |
10739 | + 20 | |
6f20ed8a AM |
10740 | + stub_entry->group->stub_sec->output_offset |
10741 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10742 | cmp_branch_off = to - from; |
10743 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10744 | } | |
10745 | ||
ac2df442 AM |
10746 | if (PPC_HA (offset) != 0) |
10747 | { | |
176a0d42 AM |
10748 | if (r != NULL) |
10749 | { | |
794e51c0 AM |
10750 | if (ALWAYS_EMIT_R2SAVE |
10751 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10752 | r[0].r_offset += 4; | |
176a0d42 | 10753 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10754 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10755 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10756 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10757 | if (plt_load_toc) |
176a0d42 | 10758 | { |
b9e5796b | 10759 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10760 | { |
b9e5796b AM |
10761 | r[2].r_offset = r[1].r_offset + 4; |
10762 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10763 | r[2].r_addend = r[0].r_addend; | |
10764 | } | |
10765 | else | |
10766 | { | |
10767 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10768 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10769 | r[2].r_addend = r[0].r_addend + 8; | |
10770 | if (plt_static_chain) | |
10771 | { | |
10772 | r[3].r_offset = r[2].r_offset + 4; | |
10773 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10774 | r[3].r_addend = r[0].r_addend + 16; | |
10775 | } | |
c7131b65 | 10776 | } |
176a0d42 AM |
10777 | } |
10778 | } | |
794e51c0 AM |
10779 | if (ALWAYS_EMIT_R2SAVE |
10780 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10781 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10782 | if (plt_load_toc) |
10783 | { | |
10784 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10785 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10786 | } | |
10787 | else | |
10788 | { | |
10789 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10790 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10791 | } | |
b9e5796b AM |
10792 | if (plt_load_toc |
10793 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10794 | { |
71a39c98 | 10795 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10796 | offset = 0; |
10797 | } | |
71a39c98 | 10798 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10799 | if (plt_load_toc) |
794e51c0 | 10800 | { |
b9e5796b AM |
10801 | if (use_fake_dep) |
10802 | { | |
10803 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10804 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10805 | } | |
10806 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10807 | if (plt_static_chain) | |
10808 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10809 | } |
ac2df442 AM |
10810 | } |
10811 | else | |
10812 | { | |
176a0d42 AM |
10813 | if (r != NULL) |
10814 | { | |
794e51c0 AM |
10815 | if (ALWAYS_EMIT_R2SAVE |
10816 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10817 | r[0].r_offset += 4; | |
176a0d42 | 10818 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10819 | if (plt_load_toc) |
176a0d42 | 10820 | { |
b9e5796b | 10821 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10822 | { |
b9e5796b AM |
10823 | r[1].r_offset = r[0].r_offset + 4; |
10824 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10825 | r[1].r_addend = r[0].r_addend; | |
10826 | } | |
10827 | else | |
10828 | { | |
10829 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10830 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10831 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10832 | if (plt_static_chain) | |
10833 | { | |
10834 | r[2].r_offset = r[1].r_offset + 4; | |
10835 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10836 | r[2].r_addend = r[0].r_addend + 8; | |
10837 | } | |
c7131b65 | 10838 | } |
176a0d42 AM |
10839 | } |
10840 | } | |
794e51c0 AM |
10841 | if (ALWAYS_EMIT_R2SAVE |
10842 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10843 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10844 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10845 | if (plt_load_toc |
10846 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10847 | { |
10848 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10849 | offset = 0; | |
10850 | } | |
71a39c98 | 10851 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10852 | if (plt_load_toc) |
794e51c0 | 10853 | { |
b9e5796b AM |
10854 | if (use_fake_dep) |
10855 | { | |
10856 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10857 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10858 | } | |
10859 | if (plt_static_chain) | |
10860 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10861 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10862 | } |
ac2df442 | 10863 | } |
b9e5796b | 10864 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10865 | { |
10866 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10867 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10868 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10869 | } |
10870 | else | |
407aa07c | 10871 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
10872 | return p; |
10873 | } | |
10874 | ||
a7f2871e AM |
10875 | /* Build a special .plt call stub for __tls_get_addr. */ |
10876 | ||
10877 | #define LD_R11_0R3 0xe9630000 | |
10878 | #define LD_R12_0R3 0xe9830000 | |
10879 | #define MR_R0_R3 0x7c601b78 | |
10880 | #define CMPDI_R11_0 0x2c2b0000 | |
10881 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10882 | #define BEQLR 0x4d820020 | |
10883 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10884 | #define STD_R11_0R1 0xf9610000 |
10885 | #define BCTRL 0x4e800421 | |
10886 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10887 | #define MTLR_R11 0x7d6803a6 |
10888 | ||
10889 | static inline bfd_byte * | |
794e51c0 AM |
10890 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10891 | struct ppc_stub_hash_entry *stub_entry, | |
10892 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10893 | { |
e7d1c40c | 10894 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 10895 | bfd_byte *loc = p; |
794e51c0 | 10896 | |
a7f2871e AM |
10897 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10898 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10899 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10900 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10901 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10902 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10903 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
10904 | if (r != NULL) |
10905 | r[0].r_offset += 7 * 4; | |
e81b4c93 | 10906 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) |
f378ab09 AM |
10907 | return build_plt_stub (htab, stub_entry, p, offset, r); |
10908 | ||
a7f2871e | 10909 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 10910 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10911 | |
10912 | if (r != NULL) | |
f378ab09 | 10913 | r[0].r_offset += 2 * 4; |
794e51c0 | 10914 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 10915 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 10916 | |
a078d95a | 10917 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10918 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10919 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10920 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10921 | ||
df136d64 AM |
10922 | if (htab->glink_eh_frame != NULL |
10923 | && htab->glink_eh_frame->size != 0) | |
10924 | { | |
10925 | bfd_byte *base, *eh; | |
10926 | unsigned int lr_used, delta; | |
10927 | ||
10928 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
10929 | eh = base + stub_entry->group->eh_size; | |
10930 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
10931 | delta = lr_used - stub_entry->group->lr_restore; | |
10932 | stub_entry->group->lr_restore = lr_used + 16; | |
10933 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
10934 | *eh++ = DW_CFA_offset_extended_sf; | |
10935 | *eh++ = 65; | |
10936 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
10937 | *eh++ = DW_CFA_advance_loc + 4; | |
10938 | *eh++ = DW_CFA_restore_extended; | |
10939 | *eh++ = 65; | |
10940 | stub_entry->group->eh_size = eh - base; | |
10941 | } | |
a7f2871e AM |
10942 | return p; |
10943 | } | |
10944 | ||
176a0d42 AM |
10945 | static Elf_Internal_Rela * |
10946 | get_relocs (asection *sec, int count) | |
10947 | { | |
10948 | Elf_Internal_Rela *relocs; | |
10949 | struct bfd_elf_section_data *elfsec_data; | |
10950 | ||
10951 | elfsec_data = elf_section_data (sec); | |
10952 | relocs = elfsec_data->relocs; | |
10953 | if (relocs == NULL) | |
10954 | { | |
10955 | bfd_size_type relsize; | |
10956 | relsize = sec->reloc_count * sizeof (*relocs); | |
10957 | relocs = bfd_alloc (sec->owner, relsize); | |
10958 | if (relocs == NULL) | |
10959 | return NULL; | |
10960 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10961 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10962 | sizeof (Elf_Internal_Shdr)); | |
10963 | if (elfsec_data->rela.hdr == NULL) | |
10964 | return NULL; | |
10965 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10966 | * sizeof (Elf64_External_Rela)); | |
10967 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10968 | sec->reloc_count = 0; |
10969 | } | |
10970 | relocs += sec->reloc_count; | |
10971 | sec->reloc_count += count; | |
10972 | return relocs; | |
10973 | } | |
10974 | ||
3d58e1fc AM |
10975 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
10976 | forms, to the equivalent relocs against the global symbol given by | |
10977 | STUB_ENTRY->H. */ | |
10978 | ||
10979 | static bfd_boolean | |
10980 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
10981 | struct ppc_stub_hash_entry *stub_entry, | |
10982 | Elf_Internal_Rela *r, unsigned int num_rel) | |
10983 | { | |
10984 | struct elf_link_hash_entry **hashes; | |
10985 | unsigned long symndx; | |
10986 | struct ppc_link_hash_entry *h; | |
10987 | bfd_vma symval; | |
10988 | ||
10989 | /* Relocs are always against symbols in their own object file. Fake | |
10990 | up global sym hashes for the stub bfd (which has no symbols). */ | |
10991 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
10992 | if (hashes == NULL) | |
10993 | { | |
10994 | bfd_size_type hsize; | |
10995 | ||
10996 | /* When called the first time, stub_globals will contain the | |
10997 | total number of symbols seen during stub sizing. After | |
10998 | allocating, stub_globals is used as an index to fill the | |
10999 | hashes array. */ | |
11000 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11001 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11002 | if (hashes == NULL) | |
11003 | return FALSE; | |
11004 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
11005 | htab->stub_globals = 1; | |
11006 | } | |
11007 | symndx = htab->stub_globals++; | |
11008 | h = stub_entry->h; | |
11009 | hashes[symndx] = &h->elf; | |
11010 | if (h->oh != NULL && h->oh->is_func) | |
11011 | h = ppc_follow_link (h->oh); | |
11012 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11013 | || h->elf.root.type == bfd_link_hash_defweak); | |
11014 | symval = (h->elf.root.u.def.value | |
11015 | + h->elf.root.u.def.section->output_offset | |
11016 | + h->elf.root.u.def.section->output_section->vma); | |
11017 | while (num_rel-- != 0) | |
11018 | { | |
11019 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11020 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11021 | { | |
11022 | /* H is an opd symbol. The addend must be zero, and the | |
11023 | branch reloc is the only one we can convert. */ | |
11024 | r->r_addend = 0; | |
11025 | break; | |
11026 | } | |
11027 | else | |
11028 | r->r_addend -= symval; | |
11029 | --r; | |
11030 | } | |
11031 | return TRUE; | |
11032 | } | |
11033 | ||
aa374f67 | 11034 | static bfd_vma |
25f53a85 | 11035 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11036 | struct ppc_stub_hash_entry *stub_entry) |
11037 | { | |
25f53a85 | 11038 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11039 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11040 | |
11041 | if (r2off == 0) | |
11042 | { | |
11043 | /* Support linking -R objects. Get the toc pointer from the | |
11044 | opd entry. */ | |
11045 | char buf[8]; | |
b9e5796b AM |
11046 | if (!htab->opd_abi) |
11047 | return r2off; | |
aa374f67 AM |
11048 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11049 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11050 | ||
11051 | if (strcmp (opd->name, ".opd") != 0 | |
11052 | || opd->reloc_count != 0) | |
11053 | { | |
2cdcc330 AM |
11054 | info->callbacks->einfo |
11055 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11056 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11057 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11058 | return (bfd_vma) -1; |
aa374f67 AM |
11059 | } |
11060 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11061 | return (bfd_vma) -1; |
aa374f67 | 11062 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11063 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11064 | } |
6f20ed8a | 11065 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11066 | return r2off; |
11067 | } | |
11068 | ||
b34976b6 | 11069 | static bfd_boolean |
4ce794b7 | 11070 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11071 | { |
721956f4 AM |
11072 | struct ppc_stub_hash_entry *stub_entry; |
11073 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11074 | struct bfd_link_info *info; |
11075 | struct ppc_link_hash_table *htab; | |
721956f4 | 11076 | bfd_byte *loc; |
3d58e1fc | 11077 | bfd_byte *p, *relp; |
1aa42141 | 11078 | bfd_vma targ, off; |
176a0d42 | 11079 | Elf_Internal_Rela *r; |
e054468f | 11080 | asection *plt; |
3d58e1fc | 11081 | int num_rel; |
04bdff6a | 11082 | int odd; |
5d1634d7 | 11083 | |
721956f4 AM |
11084 | /* Massage our args to the form they really have. */ |
11085 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11086 | info = in_arg; |
5d1634d7 | 11087 | |
5d1634d7 | 11088 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11089 | if (htab == NULL) |
11090 | return FALSE; | |
5d1634d7 | 11091 | |
1aa42141 | 11092 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11093 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11094 | |
4ce794b7 | 11095 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11096 | switch (stub_entry->stub_type) |
5d1634d7 | 11097 | { |
721956f4 | 11098 | case ppc_stub_long_branch: |
ad8e1ba5 | 11099 | case ppc_stub_long_branch_r2off: |
721956f4 | 11100 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11101 | targ = (stub_entry->target_value |
6911b7dc AM |
11102 | + stub_entry->target_section->output_offset |
11103 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11104 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11105 | |
721956f4 | 11106 | /* And this is where we are coming from. */ |
1aa42141 AM |
11107 | off = (stub_entry->stub_offset |
11108 | + stub_entry->group->stub_sec->output_offset | |
11109 | + stub_entry->group->stub_sec->output_section->vma); | |
11110 | off = targ - off; | |
e86ce104 | 11111 | |
9e390558 | 11112 | p = loc; |
ac2df442 | 11113 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11114 | { |
25f53a85 | 11115 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11116 | |
a7c49797 | 11117 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11118 | { |
11119 | htab->stub_error = TRUE; | |
11120 | return FALSE; | |
11121 | } | |
9e390558 AM |
11122 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11123 | p += 4; | |
ac2df442 AM |
11124 | if (PPC_HA (r2off) != 0) |
11125 | { | |
e7d1c40c | 11126 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11127 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11128 | p += 4; | |
a7c49797 AM |
11129 | } |
11130 | if (PPC_LO (r2off) != 0) | |
11131 | { | |
11132 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11133 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11134 | p += 4; | |
ac2df442 | 11135 | } |
9e390558 | 11136 | off -= p - loc; |
ad8e1ba5 | 11137 | } |
9e390558 AM |
11138 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11139 | p += 4; | |
ad8e1ba5 | 11140 | |
5c3dead3 AM |
11141 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11142 | { | |
cf97bcb0 AM |
11143 | _bfd_error_handler |
11144 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11145 | stub_entry->root.string); |
5c3dead3 AM |
11146 | htab->stub_error = TRUE; |
11147 | return FALSE; | |
11148 | } | |
ee75fd95 AM |
11149 | |
11150 | if (info->emitrelocations) | |
11151 | { | |
6f20ed8a | 11152 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11153 | if (r == NULL) |
11154 | return FALSE; | |
9e390558 | 11155 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11156 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11157 | r->r_addend = targ; |
3d58e1fc AM |
11158 | if (stub_entry->h != NULL |
11159 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
11160 | return FALSE; | |
ee75fd95 | 11161 | } |
721956f4 | 11162 | break; |
e86ce104 | 11163 | |
721956f4 | 11164 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11165 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11166 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11167 | stub_entry->root.string + 9, | |
b34976b6 | 11168 | FALSE, FALSE); |
721956f4 AM |
11169 | if (br_entry == NULL) |
11170 | { | |
cf97bcb0 AM |
11171 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11172 | stub_entry->root.string); | |
b34976b6 AM |
11173 | htab->stub_error = TRUE; |
11174 | return FALSE; | |
721956f4 AM |
11175 | } |
11176 | ||
1aa42141 | 11177 | targ = (stub_entry->target_value |
176a0d42 AM |
11178 | + stub_entry->target_section->output_offset |
11179 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11180 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11181 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11182 | |
1aa42141 | 11183 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11184 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11185 | |
f94498ff | 11186 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11187 | { |
f94498ff | 11188 | br_entry->iter = 0; |
84f5d08e | 11189 | |
f94498ff | 11190 | if (htab->relbrlt != NULL) |
84f5d08e | 11191 | { |
f94498ff AM |
11192 | /* Create a reloc for the branch lookup table entry. */ |
11193 | Elf_Internal_Rela rela; | |
11194 | bfd_byte *rl; | |
11195 | ||
11196 | rela.r_offset = (br_entry->offset | |
11197 | + htab->brlt->output_offset | |
11198 | + htab->brlt->output_section->vma); | |
11199 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11200 | rela.r_addend = targ; |
f94498ff AM |
11201 | |
11202 | rl = htab->relbrlt->contents; | |
11203 | rl += (htab->relbrlt->reloc_count++ | |
11204 | * sizeof (Elf64_External_Rela)); | |
11205 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11206 | } | |
11207 | else if (info->emitrelocations) | |
11208 | { | |
176a0d42 AM |
11209 | r = get_relocs (htab->brlt, 1); |
11210 | if (r == NULL) | |
11211 | return FALSE; | |
11212 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11213 | normal reloc processing. Symbols and offsets are not | |
11214 | translated from input file to output file form, so | |
11215 | set up the offset per the output file. */ | |
f94498ff AM |
11216 | r->r_offset = (br_entry->offset |
11217 | + htab->brlt->output_offset | |
11218 | + htab->brlt->output_section->vma); | |
11219 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11220 | r->r_addend = targ; |
84f5d08e | 11221 | } |
84f5d08e | 11222 | } |
721956f4 | 11223 | |
1aa42141 | 11224 | targ = (br_entry->offset |
176a0d42 AM |
11225 | + htab->brlt->output_offset |
11226 | + htab->brlt->output_section->vma); | |
11227 | ||
1aa42141 AM |
11228 | off = (elf_gp (info->output_bfd) |
11229 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11230 | off = targ - off; | |
721956f4 | 11231 | |
ad8e1ba5 | 11232 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11233 | { |
25f53a85 | 11234 | info->callbacks->einfo |
c1c8c1ef | 11235 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11236 | stub_entry->root.string); |
5d1634d7 | 11237 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11238 | htab->stub_error = TRUE; |
11239 | return FALSE; | |
5d1634d7 | 11240 | } |
41bd81ab | 11241 | |
176a0d42 AM |
11242 | if (info->emitrelocations) |
11243 | { | |
6f20ed8a | 11244 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11245 | if (r == NULL) |
11246 | return FALSE; | |
6f20ed8a | 11247 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11248 | if (bfd_big_endian (info->output_bfd)) |
11249 | r[0].r_offset += 2; | |
00f412ee | 11250 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11251 | r[0].r_offset += 4; |
11252 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11253 | r[0].r_addend = targ; |
176a0d42 AM |
11254 | if (PPC_HA (off) != 0) |
11255 | { | |
11256 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11257 | r[1].r_offset = r[0].r_offset + 4; | |
11258 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11259 | r[1].r_addend = r[0].r_addend; | |
11260 | } | |
11261 | } | |
11262 | ||
9e390558 | 11263 | p = loc; |
00f412ee | 11264 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11265 | { |
176a0d42 | 11266 | if (PPC_HA (off) != 0) |
ac2df442 | 11267 | { |
e7d1c40c | 11268 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11269 | ADDIS_R12_R2 | PPC_HA (off), p); |
11270 | p += 4; | |
e7d1c40c | 11271 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11272 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11273 | } |
11274 | else | |
9e390558 AM |
11275 | bfd_put_32 (htab->params->stub_bfd, |
11276 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11277 | } |
11278 | else | |
11279 | { | |
25f53a85 | 11280 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11281 | |
a7c49797 | 11282 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11283 | { |
11284 | htab->stub_error = TRUE; | |
11285 | return FALSE; | |
11286 | } | |
ad8e1ba5 | 11287 | |
9e390558 AM |
11288 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11289 | p += 4; | |
176a0d42 | 11290 | if (PPC_HA (off) != 0) |
ac2df442 | 11291 | { |
e7d1c40c | 11292 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11293 | ADDIS_R12_R2 | PPC_HA (off), p); |
11294 | p += 4; | |
e7d1c40c | 11295 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11296 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11297 | } |
11298 | else | |
9e390558 | 11299 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11300 | |
11301 | if (PPC_HA (r2off) != 0) | |
11302 | { | |
9e390558 | 11303 | p += 4; |
e7d1c40c | 11304 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11305 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11306 | } |
11307 | if (PPC_LO (r2off) != 0) | |
11308 | { | |
9e390558 | 11309 | p += 4; |
e7d1c40c | 11310 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11311 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11312 | } |
ad8e1ba5 | 11313 | } |
9e390558 AM |
11314 | p += 4; |
11315 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11316 | p += 4; | |
407aa07c AM |
11317 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11318 | p += 4; | |
721956f4 | 11319 | break; |
5d1634d7 | 11320 | |
05d0e962 AM |
11321 | case ppc_stub_long_branch_notoc: |
11322 | case ppc_stub_long_branch_both: | |
11323 | case ppc_stub_plt_branch_notoc: | |
11324 | case ppc_stub_plt_branch_both: | |
11325 | case ppc_stub_plt_call_notoc: | |
11326 | case ppc_stub_plt_call_both: | |
11327 | p = loc; | |
f891966f | 11328 | off = (stub_entry->stub_offset |
05d0e962 AM |
11329 | + stub_entry->group->stub_sec->output_offset |
11330 | + stub_entry->group->stub_sec->output_section->vma); | |
11331 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11332 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11333 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11334 | { | |
11335 | off += 4; | |
11336 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
11337 | p += 4; | |
11338 | } | |
11339 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11340 | { | |
11341 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11342 | if (targ >= (bfd_vma) -2) | |
11343 | abort (); | |
11344 | ||
11345 | plt = htab->elf.splt; | |
11346 | if (!htab->elf.dynamic_sections_created | |
11347 | || stub_entry->h == NULL | |
11348 | || stub_entry->h->elf.dynindx == -1) | |
11349 | { | |
11350 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11351 | plt = htab->elf.iplt; | |
11352 | else | |
11353 | plt = htab->pltlocal; | |
11354 | } | |
11355 | targ += plt->output_offset + plt->output_section->vma; | |
11356 | } | |
11357 | else | |
11358 | targ = (stub_entry->target_value | |
11359 | + stub_entry->target_section->output_offset | |
11360 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11361 | odd = off & 4; |
05d0e962 | 11362 | off = targ - off; |
f891966f | 11363 | |
3d58e1fc AM |
11364 | relp = p; |
11365 | num_rel = 0; | |
04bdff6a AM |
11366 | if (htab->powerxx_stubs) |
11367 | { | |
11368 | bfd_boolean load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; | |
11369 | p = build_powerxx_offset (htab->params->stub_bfd, p, off, odd, load); | |
11370 | } | |
11371 | else | |
11372 | { | |
11373 | /* The notoc stubs calculate their target (either a PLT entry or | |
11374 | the global entry point of a function) relative to the PC | |
11375 | returned by the "bcl" two instructions past the start of the | |
11376 | sequence emitted by build_offset. The offset is therefore 8 | |
11377 | less than calculated from the start of the sequence. */ | |
11378 | off -= 8; | |
11379 | p = build_offset (htab->params->stub_bfd, p, off, | |
11380 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
11381 | } | |
11382 | ||
f891966f | 11383 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11384 | { |
f891966f | 11385 | bfd_vma from; |
3d58e1fc | 11386 | num_rel = 1; |
f891966f AM |
11387 | from = (stub_entry->stub_offset |
11388 | + stub_entry->group->stub_sec->output_offset | |
11389 | + stub_entry->group->stub_sec->output_section->vma | |
11390 | + (p - loc)); | |
05d0e962 | 11391 | bfd_put_32 (htab->params->stub_bfd, |
f891966f | 11392 | B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11393 | } |
11394 | else | |
11395 | { | |
11396 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11397 | p += 4; | |
11398 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
11399 | } | |
11400 | p += 4; | |
df136d64 | 11401 | |
3d58e1fc AM |
11402 | if (info->emitrelocations) |
11403 | { | |
04bdff6a AM |
11404 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
11405 | if (htab->powerxx_stubs) | |
11406 | num_rel += num_relocs_for_powerxx_offset (off, odd); | |
11407 | else | |
11408 | { | |
11409 | num_rel += num_relocs_for_offset (off); | |
11410 | roff += 16; | |
11411 | } | |
3d58e1fc AM |
11412 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11413 | if (r == NULL) | |
11414 | return FALSE; | |
04bdff6a AM |
11415 | if (htab->powerxx_stubs) |
11416 | r = emit_relocs_for_powerxx_offset (info, r, roff, targ, off, odd); | |
11417 | else | |
11418 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11419 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11420 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11421 | { | |
11422 | ++r; | |
11423 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11424 | r->r_offset = roff; | |
11425 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11426 | r->r_addend = targ; | |
11427 | if (stub_entry->h != NULL | |
11428 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11429 | return FALSE; | |
11430 | } | |
11431 | } | |
11432 | ||
04bdff6a AM |
11433 | if (!htab->powerxx_stubs |
11434 | && htab->glink_eh_frame != NULL | |
11435 | && htab->glink_eh_frame->size != 0) | |
df136d64 AM |
11436 | { |
11437 | bfd_byte *base, *eh; | |
11438 | unsigned int lr_used, delta; | |
11439 | ||
11440 | base = (htab->glink_eh_frame->contents | |
11441 | + stub_entry->group->eh_base + 17); | |
11442 | eh = base + stub_entry->group->eh_size; | |
11443 | lr_used = stub_entry->stub_offset + 8; | |
11444 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11445 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11446 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11447 | lr_used += 4; | |
11448 | delta = lr_used - stub_entry->group->lr_restore; | |
11449 | stub_entry->group->lr_restore = lr_used + 8; | |
11450 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11451 | *eh++ = DW_CFA_register; | |
11452 | *eh++ = 65; | |
11453 | *eh++ = 12; | |
11454 | *eh++ = DW_CFA_advance_loc + 2; | |
11455 | *eh++ = DW_CFA_restore_extended; | |
11456 | *eh++ = 65; | |
11457 | stub_entry->group->eh_size = eh - base; | |
11458 | } | |
05d0e962 AM |
11459 | break; |
11460 | ||
721956f4 | 11461 | case ppc_stub_plt_call: |
794e51c0 | 11462 | case ppc_stub_plt_call_r2save: |
e054468f | 11463 | if (stub_entry->h != NULL |
b31867b6 AM |
11464 | && stub_entry->h->is_func_descriptor |
11465 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11466 | { |
b31867b6 AM |
11467 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11468 | ||
11469 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11470 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11471 | if (fh->elf.root.type == bfd_link_hash_undefined |
11472 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11473 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11474 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11475 | } |
11476 | ||
721956f4 | 11477 | /* Now build the stub. */ |
1aa42141 AM |
11478 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11479 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11480 | abort (); |
11481 | ||
33e44f2e | 11482 | plt = htab->elf.splt; |
25f23106 AM |
11483 | if (!htab->elf.dynamic_sections_created |
11484 | || stub_entry->h == NULL | |
11485 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11486 | { |
11487 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11488 | plt = htab->elf.iplt; | |
11489 | else | |
11490 | plt = htab->pltlocal; | |
11491 | } | |
1aa42141 | 11492 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11493 | |
1aa42141 AM |
11494 | off = (elf_gp (info->output_bfd) |
11495 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11496 | off = targ - off; | |
721956f4 | 11497 | |
ad8e1ba5 | 11498 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11499 | { |
25f53a85 | 11500 | info->callbacks->einfo |
695344c0 | 11501 | /* xgettext:c-format */ |
c1c8c1ef | 11502 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11503 | stub_entry->h != NULL |
11504 | ? stub_entry->h->elf.root.root.string | |
11505 | : "<local sym>"); | |
721956f4 | 11506 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11507 | htab->stub_error = TRUE; |
11508 | return FALSE; | |
721956f4 AM |
11509 | } |
11510 | ||
176a0d42 AM |
11511 | r = NULL; |
11512 | if (info->emitrelocations) | |
11513 | { | |
6f20ed8a | 11514 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11515 | ((PPC_HA (off) != 0) |
11516 | + (htab->opd_abi | |
e7d1c40c | 11517 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11518 | && PPC_HA (off + 16) == PPC_HA (off)) |
11519 | : 1))); | |
176a0d42 AM |
11520 | if (r == NULL) |
11521 | return FALSE; | |
6f20ed8a | 11522 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11523 | if (bfd_big_endian (info->output_bfd)) |
11524 | r[0].r_offset += 2; | |
1aa42141 | 11525 | r[0].r_addend = targ; |
176a0d42 | 11526 | } |
a7f2871e AM |
11527 | if (stub_entry->h != NULL |
11528 | && (stub_entry->h == htab->tls_get_addr_fd | |
11529 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11530 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11531 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11532 | else |
794e51c0 | 11533 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11534 | break; |
11535 | ||
a4b6fadd AM |
11536 | case ppc_stub_save_res: |
11537 | return TRUE; | |
11538 | ||
721956f4 AM |
11539 | default: |
11540 | BFD_FAIL (); | |
b34976b6 | 11541 | return FALSE; |
721956f4 AM |
11542 | } |
11543 | ||
1aa42141 | 11544 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11545 | |
e7d1c40c | 11546 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11547 | { |
11548 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11549 | size_t len1, len2; |
11550 | char *name; | |
11551 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11552 | "long_branch", |
11553 | "long_branch", | |
3f6ff479 AM |
11554 | "long_branch", |
11555 | "plt_branch", | |
ee75fd95 | 11556 | "plt_branch", |
05d0e962 AM |
11557 | "plt_branch", |
11558 | "plt_branch", | |
11559 | "plt_call", | |
11560 | "plt_call", | |
794e51c0 | 11561 | "plt_call", |
ee75fd95 AM |
11562 | "plt_call" }; |
11563 | ||
11564 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11565 | len2 = strlen (stub_entry->root.string); | |
11566 | name = bfd_malloc (len1 + len2 + 2); | |
11567 | if (name == NULL) | |
11568 | return FALSE; | |
11569 | memcpy (name, stub_entry->root.string, 9); | |
11570 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11571 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11572 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11573 | if (h == NULL) |
11574 | return FALSE; | |
11575 | if (h->root.type == bfd_link_hash_new) | |
11576 | { | |
11577 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11578 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11579 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11580 | h->ref_regular = 1; |
11581 | h->def_regular = 1; | |
11582 | h->ref_regular_nonweak = 1; | |
11583 | h->forced_local = 1; | |
11584 | h->non_elf = 0; | |
2ec55de3 | 11585 | h->root.linker_def = 1; |
97b639ba AM |
11586 | } |
11587 | } | |
11588 | ||
b34976b6 | 11589 | return TRUE; |
721956f4 AM |
11590 | } |
11591 | ||
11592 | /* As above, but don't actually build the stub. Just bump offset so | |
11593 | we know stub section sizes, and select plt_branch stubs where | |
11594 | long_branch stubs won't do. */ | |
11595 | ||
b34976b6 | 11596 | static bfd_boolean |
4ce794b7 | 11597 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11598 | { |
11599 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11600 | struct bfd_link_info *info; |
721956f4 | 11601 | struct ppc_link_hash_table *htab; |
f891966f AM |
11602 | asection *plt; |
11603 | bfd_vma targ, off, r2off; | |
04bdff6a | 11604 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
11605 | |
11606 | /* Massage our args to the form they really have. */ | |
11607 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11608 | info = in_arg; |
11609 | ||
11610 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11611 | if (htab == NULL) |
11612 | return FALSE; | |
721956f4 | 11613 | |
1aa42141 AM |
11614 | /* Make a note of the offset within the stubs for this entry. */ |
11615 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11616 | ||
a4b6fadd AM |
11617 | if (stub_entry->h != NULL |
11618 | && stub_entry->h->save_res | |
11619 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11620 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11621 | { | |
11622 | /* Don't make stubs to out-of-line register save/restore | |
11623 | functions. Instead, emit copies of the functions. */ | |
11624 | stub_entry->group->needs_save_res = 1; | |
11625 | stub_entry->stub_type = ppc_stub_save_res; | |
11626 | return TRUE; | |
11627 | } | |
11628 | ||
f891966f | 11629 | switch (stub_entry->stub_type) |
721956f4 | 11630 | { |
f891966f AM |
11631 | case ppc_stub_plt_branch: |
11632 | case ppc_stub_plt_branch_r2off: | |
11633 | /* Reset the stub type from the plt branch variant in case we now | |
11634 | can reach with a shorter stub. */ | |
11635 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11636 | /* Fall through. */ | |
11637 | case ppc_stub_long_branch: | |
11638 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
11639 | targ = (stub_entry->target_value |
11640 | + stub_entry->target_section->output_offset | |
11641 | + stub_entry->target_section->output_section->vma); | |
f891966f | 11642 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
11643 | off = (stub_entry->stub_offset |
11644 | + stub_entry->group->stub_sec->output_offset | |
11645 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11646 | |
ad8e1ba5 | 11647 | size = 4; |
f891966f | 11648 | r2off = 0; |
ad8e1ba5 AM |
11649 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
11650 | { | |
25f53a85 | 11651 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11652 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11653 | { |
11654 | htab->stub_error = TRUE; | |
11655 | return FALSE; | |
11656 | } | |
a7c49797 | 11657 | size = 8; |
ac2df442 | 11658 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11659 | size += 4; |
11660 | if (PPC_LO (r2off) != 0) | |
11661 | size += 4; | |
1aa42141 | 11662 | off += size - 4; |
ad8e1ba5 | 11663 | } |
1aa42141 | 11664 | off = targ - off; |
ad8e1ba5 | 11665 | |
f891966f AM |
11666 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
11667 | Do the same for -R objects without function descriptors. */ | |
11668 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11669 | && r2off == 0 | |
11670 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
11671 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 11672 | { |
f891966f | 11673 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 11674 | |
f891966f AM |
11675 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11676 | stub_entry->root.string + 9, | |
11677 | TRUE, FALSE); | |
11678 | if (br_entry == NULL) | |
721956f4 | 11679 | { |
f891966f AM |
11680 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11681 | stub_entry->root.string); | |
11682 | htab->stub_error = TRUE; | |
11683 | return FALSE; | |
721956f4 AM |
11684 | } |
11685 | ||
f891966f | 11686 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 11687 | { |
f891966f AM |
11688 | br_entry->iter = htab->stub_iteration; |
11689 | br_entry->offset = htab->brlt->size; | |
11690 | htab->brlt->size += 8; | |
63bc6f6c | 11691 | |
f891966f AM |
11692 | if (htab->relbrlt != NULL) |
11693 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
11694 | else if (info->emitrelocations) | |
84f5d08e | 11695 | { |
f891966f AM |
11696 | htab->brlt->reloc_count += 1; |
11697 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 11698 | } |
f891966f | 11699 | } |
ac2df442 | 11700 | |
f891966f AM |
11701 | targ = (br_entry->offset |
11702 | + htab->brlt->output_offset | |
11703 | + htab->brlt->output_section->vma); | |
11704 | off = (elf_gp (info->output_bfd) | |
11705 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11706 | off = targ - off; | |
176a0d42 | 11707 | |
f891966f AM |
11708 | if (info->emitrelocations) |
11709 | { | |
11710 | stub_entry->group->stub_sec->reloc_count | |
11711 | += 1 + (PPC_HA (off) != 0); | |
11712 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11713 | } | |
05d0e962 | 11714 | |
f891966f AM |
11715 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
11716 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
11717 | { | |
11718 | size = 12; | |
11719 | if (PPC_HA (off) != 0) | |
11720 | size = 16; | |
ac2df442 | 11721 | } |
f891966f | 11722 | else |
ac2df442 | 11723 | { |
f891966f AM |
11724 | size = 16; |
11725 | if (PPC_HA (off) != 0) | |
11726 | size += 4; | |
11727 | ||
11728 | if (PPC_HA (r2off) != 0) | |
11729 | size += 4; | |
11730 | if (PPC_LO (r2off) != 0) | |
11731 | size += 4; | |
ac2df442 | 11732 | } |
721956f4 | 11733 | } |
f891966f AM |
11734 | else if (info->emitrelocations) |
11735 | { | |
11736 | stub_entry->group->stub_sec->reloc_count += 1; | |
11737 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11738 | } | |
11739 | break; | |
11740 | ||
11741 | case ppc_stub_plt_branch_notoc: | |
11742 | case ppc_stub_plt_branch_both: | |
11743 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11744 | /* Fall through. */ | |
11745 | case ppc_stub_long_branch_notoc: | |
11746 | case ppc_stub_long_branch_both: | |
11747 | off = (stub_entry->stub_offset | |
11748 | + stub_entry->group->stub_sec->output_offset | |
11749 | + stub_entry->group->stub_sec->output_section->vma); | |
11750 | size = 0; | |
11751 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
11752 | size = 4; | |
11753 | off += size; | |
11754 | targ = (stub_entry->target_value | |
11755 | + stub_entry->target_section->output_offset | |
11756 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11757 | odd = off & 4; |
f891966f AM |
11758 | off = targ - off; |
11759 | ||
3d58e1fc AM |
11760 | if (info->emitrelocations) |
11761 | { | |
04bdff6a AM |
11762 | unsigned int num_rel; |
11763 | if (htab->powerxx_stubs) | |
11764 | num_rel = num_relocs_for_powerxx_offset (off, odd); | |
11765 | else | |
11766 | num_rel = num_relocs_for_offset (off - 8); | |
11767 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
11768 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
11769 | } | |
11770 | ||
04bdff6a AM |
11771 | if (htab->powerxx_stubs) |
11772 | extra = size_powerxx_offset (off, odd); | |
11773 | else | |
11774 | extra = size_offset (off - 8); | |
f891966f AM |
11775 | /* Include branch insn plus those in the offset sequence. */ |
11776 | size += 4 + extra; | |
11777 | /* The branch insn is at the end, or "extra" bytes along. So | |
11778 | its offset will be "extra" bytes less that that already | |
11779 | calculated. */ | |
11780 | off -= extra; | |
11781 | ||
04bdff6a AM |
11782 | if (!htab->powerxx_stubs) |
11783 | { | |
11784 | /* After the bcl, lr has been modified so we need to emit | |
11785 | .eh_frame info saying the return address is in r12. */ | |
11786 | lr_used = stub_entry->stub_offset + 8; | |
11787 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
11788 | lr_used += 4; | |
11789 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
11790 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
11791 | DW_CFA_restore_extended 65. */ | |
11792 | delta = lr_used - stub_entry->group->lr_restore; | |
11793 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11794 | stub_entry->group->lr_restore = lr_used + 8; | |
11795 | } | |
f891966f AM |
11796 | |
11797 | /* If the branch can't reach, use a plt_branch. */ | |
11798 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
11799 | { | |
11800 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
11801 | - ppc_stub_long_branch_notoc); | |
11802 | size += 4; | |
11803 | } | |
3d58e1fc AM |
11804 | else if (info->emitrelocations) |
11805 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
11806 | break; |
11807 | ||
11808 | case ppc_stub_plt_call_notoc: | |
11809 | case ppc_stub_plt_call_both: | |
11810 | off = (stub_entry->stub_offset | |
11811 | + stub_entry->group->stub_sec->output_offset | |
11812 | + stub_entry->group->stub_sec->output_section->vma); | |
11813 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
11814 | off += 4; | |
11815 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11816 | if (targ >= (bfd_vma) -2) | |
11817 | abort (); | |
11818 | ||
11819 | plt = htab->elf.splt; | |
11820 | if (!htab->elf.dynamic_sections_created | |
11821 | || stub_entry->h == NULL | |
11822 | || stub_entry->h->elf.dynindx == -1) | |
11823 | { | |
11824 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11825 | plt = htab->elf.iplt; | |
11826 | else | |
11827 | plt = htab->pltlocal; | |
11828 | } | |
11829 | targ += plt->output_offset + plt->output_section->vma; | |
04bdff6a | 11830 | odd = off & 4; |
f891966f AM |
11831 | off = targ - off; |
11832 | ||
11833 | if (htab->params->plt_stub_align != 0) | |
11834 | { | |
11835 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11836 | ||
11837 | stub_entry->group->stub_sec->size += pad; | |
11838 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11839 | off -= pad; | |
11840 | } | |
11841 | ||
3d58e1fc AM |
11842 | if (info->emitrelocations) |
11843 | { | |
04bdff6a AM |
11844 | unsigned int num_rel; |
11845 | if (htab->powerxx_stubs) | |
11846 | num_rel = num_relocs_for_powerxx_offset (off, odd); | |
11847 | else | |
11848 | num_rel = num_relocs_for_offset (off - 8); | |
11849 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
11850 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
11851 | } | |
11852 | ||
f891966f AM |
11853 | size = plt_stub_size (htab, stub_entry, off); |
11854 | ||
04bdff6a AM |
11855 | if (!htab->powerxx_stubs) |
11856 | { | |
11857 | /* After the bcl, lr has been modified so we need to emit | |
11858 | .eh_frame info saying the return address is in r12. */ | |
11859 | lr_used = stub_entry->stub_offset + 8; | |
11860 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
11861 | lr_used += 4; | |
11862 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
11863 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
11864 | DW_CFA_restore_extended 65. */ | |
11865 | delta = lr_used - stub_entry->group->lr_restore; | |
11866 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11867 | stub_entry->group->lr_restore = lr_used + 8; | |
11868 | } | |
f891966f AM |
11869 | break; |
11870 | ||
11871 | case ppc_stub_plt_call: | |
11872 | case ppc_stub_plt_call_r2save: | |
11873 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
11874 | if (targ >= (bfd_vma) -2) | |
11875 | abort (); | |
11876 | plt = htab->elf.splt; | |
11877 | if (!htab->elf.dynamic_sections_created | |
11878 | || stub_entry->h == NULL | |
11879 | || stub_entry->h->elf.dynindx == -1) | |
11880 | { | |
11881 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11882 | plt = htab->elf.iplt; | |
11883 | else | |
11884 | plt = htab->pltlocal; | |
11885 | } | |
11886 | targ += plt->output_offset + plt->output_section->vma; | |
11887 | ||
11888 | off = (elf_gp (info->output_bfd) | |
11889 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11890 | off = targ - off; | |
11891 | ||
11892 | if (htab->params->plt_stub_align != 0) | |
11893 | { | |
11894 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11895 | ||
11896 | stub_entry->group->stub_sec->size += pad; | |
11897 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11898 | } | |
11899 | ||
11900 | if (info->emitrelocations) | |
11901 | { | |
11902 | stub_entry->group->stub_sec->reloc_count | |
11903 | += ((PPC_HA (off) != 0) | |
11904 | + (htab->opd_abi | |
11905 | ? 2 + (htab->params->plt_static_chain | |
11906 | && PPC_HA (off + 16) == PPC_HA (off)) | |
11907 | : 1)); | |
11908 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11909 | } | |
11910 | ||
11911 | size = plt_stub_size (htab, stub_entry, off); | |
11912 | ||
11913 | if (stub_entry->h != NULL | |
11914 | && (stub_entry->h == htab->tls_get_addr_fd | |
11915 | || stub_entry->h == htab->tls_get_addr) | |
11916 | && htab->params->tls_get_addr_opt | |
11917 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11918 | { | |
11919 | /* After the bctrl, lr has been modified so we need to | |
11920 | emit .eh_frame info saying the return address is | |
11921 | on the stack. In fact we put the EH info specifying | |
11922 | that the return address is on the stack *at* the | |
11923 | call rather than after it, because the EH info for a | |
11924 | call needs to be specified by that point. | |
11925 | See libgcc/unwind-dw2.c execute_cfa_program. */ | |
11926 | lr_used = stub_entry->stub_offset + size - 20; | |
11927 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
11928 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
11929 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
11930 | delta = lr_used - stub_entry->group->lr_restore; | |
11931 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11932 | stub_entry->group->lr_restore = size - 4; | |
11933 | } | |
11934 | break; | |
11935 | ||
11936 | default: | |
11937 | BFD_FAIL (); | |
11938 | return FALSE; | |
721956f4 AM |
11939 | } |
11940 | ||
6f20ed8a | 11941 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11942 | return TRUE; |
721956f4 AM |
11943 | } |
11944 | ||
11945 | /* Set up various things so that we can make a list of input sections | |
11946 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11947 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11948 | |
11949 | int | |
e7d1c40c | 11950 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11951 | { |
6f20ed8a | 11952 | unsigned int id; |
721956f4 AM |
11953 | bfd_size_type amt; |
11954 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11955 | ||
4dfe6ac6 NC |
11956 | if (htab == NULL) |
11957 | return -1; | |
4c52953f | 11958 | |
7cf7fcc8 | 11959 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
11960 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
11961 | htab->sec_info = bfd_zmalloc (amt); | |
11962 | if (htab->sec_info == NULL) | |
721956f4 AM |
11963 | return -1; |
11964 | ||
3d6f9012 AM |
11965 | /* Set toc_off for com, und, abs and ind sections. */ |
11966 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11967 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11968 | |
721956f4 AM |
11969 | return 1; |
11970 | } | |
11971 | ||
927be08e AM |
11972 | /* Set up for first pass at multitoc partitioning. */ |
11973 | ||
11974 | void | |
11975 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11976 | { | |
11977 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11978 | ||
1c865ab2 | 11979 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11980 | htab->toc_bfd = NULL; |
11981 | htab->toc_first_sec = NULL; | |
11982 | } | |
11983 | ||
e717da7e AM |
11984 | /* The linker repeatedly calls this function for each TOC input section |
11985 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11986 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11987 | |
927be08e | 11988 | bfd_boolean |
4ce794b7 | 11989 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11990 | { |
11991 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11992 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11993 | |
4dfe6ac6 NC |
11994 | if (htab == NULL) |
11995 | return FALSE; | |
11996 | ||
927be08e | 11997 | if (!htab->second_toc_pass) |
4c52953f | 11998 | { |
927be08e | 11999 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
12000 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
12001 | ||
12002 | if (new_bfd) | |
bf102f86 AM |
12003 | { |
12004 | htab->toc_bfd = isec->owner; | |
12005 | htab->toc_first_sec = isec; | |
12006 | } | |
927be08e | 12007 | |
bf102f86 AM |
12008 | addr = isec->output_offset + isec->output_section->vma; |
12009 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12010 | limit = 0x80008000; |
12011 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12012 | limit = 0x10000; | |
12013 | if (off + isec->size > limit) | |
bf102f86 AM |
12014 | { |
12015 | addr = (htab->toc_first_sec->output_offset | |
12016 | + htab->toc_first_sec->output_section->vma); | |
12017 | htab->toc_curr = addr; | |
a27e685f | 12018 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12019 | } |
99877b66 | 12020 | |
927be08e AM |
12021 | /* toc_curr is the base address of this toc group. Set elf_gp |
12022 | for the input section to be the offset relative to the | |
12023 | output toc base plus 0x8000. Making the input elf_gp an | |
12024 | offset allows us to move the toc as a whole without | |
12025 | recalculating input elf_gp. */ | |
06bcf541 | 12026 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12027 | off += TOC_BASE_OFF; |
12028 | ||
12029 | /* Die if someone uses a linker script that doesn't keep input | |
12030 | file .toc and .got together. */ | |
a4fd3de5 AM |
12031 | if (new_bfd |
12032 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
12033 | && elf_gp (isec->owner) != off) |
12034 | return FALSE; | |
12035 | ||
12036 | elf_gp (isec->owner) = off; | |
12037 | return TRUE; | |
4c52953f | 12038 | } |
927be08e AM |
12039 | |
12040 | /* During the second pass toc_first_sec points to the start of | |
12041 | a toc group, and toc_curr is used to track the old elf_gp. | |
12042 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12043 | if (htab->toc_bfd == isec->owner) | |
12044 | return TRUE; | |
12045 | htab->toc_bfd = isec->owner; | |
12046 | ||
12047 | if (htab->toc_first_sec == NULL | |
12048 | || htab->toc_curr != elf_gp (isec->owner)) | |
12049 | { | |
12050 | htab->toc_curr = elf_gp (isec->owner); | |
12051 | htab->toc_first_sec = isec; | |
12052 | } | |
12053 | addr = (htab->toc_first_sec->output_offset | |
12054 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12055 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12056 | elf_gp (isec->owner) = off; |
12057 | ||
12058 | return TRUE; | |
ad8e1ba5 AM |
12059 | } |
12060 | ||
927be08e AM |
12061 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12062 | symbol H. */ | |
12063 | ||
12064 | static bfd_boolean | |
12065 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12066 | { | |
12067 | if (h->root.type == bfd_link_hash_indirect) | |
12068 | return TRUE; | |
12069 | ||
927be08e AM |
12070 | merge_got_entries (&h->got.glist); |
12071 | ||
12072 | return TRUE; | |
12073 | } | |
12074 | ||
12075 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12076 | symbol H. */ | |
12077 | ||
12078 | static bfd_boolean | |
12079 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
12080 | { | |
12081 | struct got_entry *gent; | |
12082 | ||
12083 | if (h->root.type == bfd_link_hash_indirect) | |
12084 | return TRUE; | |
12085 | ||
927be08e AM |
12086 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12087 | if (!gent->is_indirect) | |
12088 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
12089 | return TRUE; | |
12090 | } | |
12091 | ||
12092 | /* Called on the first multitoc pass after the last call to | |
12093 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12094 | entries. */ | |
12095 | ||
12096 | bfd_boolean | |
12097 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
12098 | { |
12099 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
12100 | struct bfd *ibfd, *ibfd2; |
12101 | bfd_boolean done_something; | |
12102 | ||
12103 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12104 | |
7865406b AM |
12105 | if (!htab->do_multi_toc) |
12106 | return FALSE; | |
12107 | ||
d0fae19d | 12108 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12109 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12110 | ||
12111 | /* And tlsld_got. */ | |
c72f2fb2 | 12112 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12113 | { |
12114 | struct got_entry *ent, *ent2; | |
12115 | ||
12116 | if (!is_ppc64_elf (ibfd)) | |
12117 | continue; | |
12118 | ||
12119 | ent = ppc64_tlsld_got (ibfd); | |
12120 | if (!ent->is_indirect | |
12121 | && ent->got.offset != (bfd_vma) -1) | |
12122 | { | |
c72f2fb2 | 12123 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12124 | { |
12125 | if (!is_ppc64_elf (ibfd2)) | |
12126 | continue; | |
12127 | ||
12128 | ent2 = ppc64_tlsld_got (ibfd2); | |
12129 | if (!ent2->is_indirect | |
12130 | && ent2->got.offset != (bfd_vma) -1 | |
12131 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12132 | { | |
12133 | ent2->is_indirect = TRUE; | |
12134 | ent2->got.ent = ent; | |
12135 | } | |
12136 | } | |
12137 | } | |
12138 | } | |
12139 | ||
12140 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12141 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12142 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12143 | htab->got_reli_size = 0; |
12144 | ||
c72f2fb2 | 12145 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12146 | { |
12147 | asection *got, *relgot; | |
12148 | ||
12149 | if (!is_ppc64_elf (ibfd)) | |
12150 | continue; | |
12151 | ||
12152 | got = ppc64_elf_tdata (ibfd)->got; | |
12153 | if (got != NULL) | |
12154 | { | |
12155 | got->rawsize = got->size; | |
12156 | got->size = 0; | |
12157 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12158 | relgot->rawsize = relgot->size; | |
12159 | relgot->size = 0; | |
12160 | } | |
12161 | } | |
12162 | ||
12163 | /* Now reallocate the got, local syms first. We don't need to | |
12164 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12165 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12166 | { |
12167 | struct got_entry **lgot_ents; | |
12168 | struct got_entry **end_lgot_ents; | |
12169 | struct plt_entry **local_plt; | |
12170 | struct plt_entry **end_local_plt; | |
f961d9dd | 12171 | unsigned char *lgot_masks; |
927be08e AM |
12172 | bfd_size_type locsymcount; |
12173 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12174 | asection *s; |
927be08e AM |
12175 | |
12176 | if (!is_ppc64_elf (ibfd)) | |
12177 | continue; | |
12178 | ||
12179 | lgot_ents = elf_local_got_ents (ibfd); | |
12180 | if (!lgot_ents) | |
12181 | continue; | |
12182 | ||
12183 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12184 | locsymcount = symtab_hdr->sh_info; | |
12185 | end_lgot_ents = lgot_ents + locsymcount; | |
12186 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12187 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12188 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12189 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12190 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12191 | { | |
12192 | struct got_entry *ent; | |
12193 | ||
12194 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12195 | { |
19e08130 AM |
12196 | unsigned int ent_size = 8; |
12197 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12198 | ||
d0fae19d AM |
12199 | ent->got.offset = s->size; |
12200 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12201 | { |
19e08130 AM |
12202 | ent_size *= 2; |
12203 | rel_size *= 2; | |
12204 | } | |
12205 | s->size += ent_size; | |
37da22e5 | 12206 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12207 | { |
33e44f2e | 12208 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12209 | htab->got_reli_size += rel_size; |
12210 | } | |
6a3858a6 | 12211 | else if (bfd_link_pic (info) |
f749f26e | 12212 | && !(ent->tls_type != 0 |
6a3858a6 | 12213 | && bfd_link_executable (info))) |
19e08130 AM |
12214 | { |
12215 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12216 | srel->size += rel_size; | |
d0fae19d AM |
12217 | } |
12218 | } | |
927be08e AM |
12219 | } |
12220 | } | |
12221 | ||
12222 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12223 | ||
c72f2fb2 | 12224 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12225 | { |
12226 | struct got_entry *ent; | |
12227 | ||
12228 | if (!is_ppc64_elf (ibfd)) | |
12229 | continue; | |
12230 | ||
12231 | ent = ppc64_tlsld_got (ibfd); | |
12232 | if (!ent->is_indirect | |
12233 | && ent->got.offset != (bfd_vma) -1) | |
12234 | { | |
12235 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12236 | ent->got.offset = s->size; | |
12237 | s->size += 16; | |
f749f26e | 12238 | if (bfd_link_dll (info)) |
927be08e AM |
12239 | { |
12240 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12241 | srel->size += sizeof (Elf64_External_Rela); | |
12242 | } | |
12243 | } | |
12244 | } | |
12245 | ||
33e44f2e | 12246 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12247 | if (!done_something) |
c72f2fb2 | 12248 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12249 | { |
12250 | asection *got; | |
12251 | ||
12252 | if (!is_ppc64_elf (ibfd)) | |
12253 | continue; | |
12254 | ||
12255 | got = ppc64_elf_tdata (ibfd)->got; | |
12256 | if (got != NULL) | |
12257 | { | |
12258 | done_something = got->rawsize != got->size; | |
12259 | if (done_something) | |
12260 | break; | |
12261 | } | |
12262 | } | |
12263 | ||
12264 | if (done_something) | |
e7d1c40c | 12265 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12266 | |
12267 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12268 | on input sections. */ | |
12269 | htab->toc_bfd = NULL; | |
12270 | htab->toc_first_sec = NULL; | |
12271 | htab->second_toc_pass = TRUE; | |
12272 | return done_something; | |
12273 | } | |
12274 | ||
12275 | /* Called after second pass of multitoc partitioning. */ | |
12276 | ||
12277 | void | |
12278 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12279 | { | |
12280 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12281 | ||
12282 | /* After the second pass, toc_curr tracks the TOC offset used | |
12283 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12284 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12285 | } |
12286 | ||
9b5ecbd0 AM |
12287 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12288 | calls, then there's no need to use toc adjusting stubs when branching | |
12289 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12290 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12291 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12292 | for a stub was detected. If called from the top level, a return of | |
12293 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12294 | |
12295 | static int | |
4ce794b7 | 12296 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12297 | { |
9b5ecbd0 | 12298 | int ret; |
70cc837d AM |
12299 | |
12300 | /* Mark this section as checked. */ | |
12301 | isec->call_check_done = 1; | |
9b5ecbd0 | 12302 | |
772119ce AM |
12303 | /* We know none of our code bearing sections will need toc stubs. */ |
12304 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12305 | return 0; | |
12306 | ||
eea6121a | 12307 | if (isec->size == 0) |
082c50f8 AM |
12308 | return 0; |
12309 | ||
4c52953f AM |
12310 | if (isec->output_section == NULL) |
12311 | return 0; | |
12312 | ||
4c52953f | 12313 | ret = 0; |
70cc837d | 12314 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12315 | { |
70cc837d AM |
12316 | Elf_Internal_Rela *relstart, *rel; |
12317 | Elf_Internal_Sym *local_syms; | |
12318 | struct ppc_link_hash_table *htab; | |
2917689a | 12319 | |
70cc837d AM |
12320 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12321 | info->keep_memory); | |
12322 | if (relstart == NULL) | |
12323 | return -1; | |
90aecf7a | 12324 | |
70cc837d AM |
12325 | /* Look for branches to outside of this section. */ |
12326 | local_syms = NULL; | |
12327 | htab = ppc_hash_table (info); | |
12328 | if (htab == NULL) | |
12329 | return -1; | |
4c52953f | 12330 | |
70cc837d | 12331 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12332 | { |
70cc837d AM |
12333 | enum elf_ppc64_reloc_type r_type; |
12334 | unsigned long r_symndx; | |
12335 | struct elf_link_hash_entry *h; | |
12336 | struct ppc_link_hash_entry *eh; | |
12337 | Elf_Internal_Sym *sym; | |
12338 | asection *sym_sec; | |
12339 | struct _opd_sec_data *opd; | |
12340 | bfd_vma sym_value; | |
12341 | bfd_vma dest; | |
12342 | ||
12343 | r_type = ELF64_R_TYPE (rel->r_info); | |
12344 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12345 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12346 | && r_type != R_PPC64_REL14 |
12347 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12348 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12349 | && r_type != R_PPC64_PLTCALL |
12350 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12351 | continue; |
4c52953f | 12352 | |
70cc837d AM |
12353 | r_symndx = ELF64_R_SYM (rel->r_info); |
12354 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12355 | isec->owner)) | |
4c52953f | 12356 | { |
70cc837d AM |
12357 | ret = -1; |
12358 | break; | |
12359 | } | |
4c52953f | 12360 | |
70cc837d AM |
12361 | /* Calls to dynamic lib functions go through a plt call stub |
12362 | that uses r2. */ | |
12363 | eh = (struct ppc_link_hash_entry *) h; | |
12364 | if (eh != NULL | |
12365 | && (eh->elf.plt.plist != NULL | |
12366 | || (eh->oh != NULL | |
12367 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12368 | { | |
12369 | ret = 1; | |
12370 | break; | |
4c52953f AM |
12371 | } |
12372 | ||
70cc837d AM |
12373 | if (sym_sec == NULL) |
12374 | /* Ignore other undefined symbols. */ | |
4c52953f | 12375 | continue; |
4c52953f | 12376 | |
70cc837d AM |
12377 | /* Assume branches to other sections not included in the |
12378 | link need stubs too, to cover -R and absolute syms. */ | |
12379 | if (sym_sec->output_section == NULL) | |
12380 | { | |
12381 | ret = 1; | |
12382 | break; | |
12383 | } | |
4c52953f | 12384 | |
70cc837d AM |
12385 | if (h == NULL) |
12386 | sym_value = sym->st_value; | |
12387 | else | |
12388 | { | |
12389 | if (h->root.type != bfd_link_hash_defined | |
12390 | && h->root.type != bfd_link_hash_defweak) | |
12391 | abort (); | |
12392 | sym_value = h->root.u.def.value; | |
12393 | } | |
12394 | sym_value += rel->r_addend; | |
4c52953f | 12395 | |
70cc837d AM |
12396 | /* If this branch reloc uses an opd sym, find the code section. */ |
12397 | opd = get_opd_info (sym_sec); | |
12398 | if (opd != NULL) | |
12399 | { | |
12400 | if (h == NULL && opd->adjust != NULL) | |
12401 | { | |
12402 | long adjust; | |
4c52953f | 12403 | |
92a9c616 | 12404 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12405 | if (adjust == -1) |
12406 | /* Assume deleted functions won't ever be called. */ | |
12407 | continue; | |
12408 | sym_value += adjust; | |
12409 | } | |
4c52953f | 12410 | |
aef36ac1 AM |
12411 | dest = opd_entry_value (sym_sec, sym_value, |
12412 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12413 | if (dest == (bfd_vma) -1) |
12414 | continue; | |
12415 | } | |
12416 | else | |
12417 | dest = (sym_value | |
12418 | + sym_sec->output_offset | |
12419 | + sym_sec->output_section->vma); | |
4c52953f | 12420 | |
70cc837d AM |
12421 | /* Ignore branch to self. */ |
12422 | if (sym_sec == isec) | |
12423 | continue; | |
4c52953f | 12424 | |
70cc837d AM |
12425 | /* If the called function uses the toc, we need a stub. */ |
12426 | if (sym_sec->has_toc_reloc | |
12427 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12428 | { |
70cc837d | 12429 | ret = 1; |
4c52953f AM |
12430 | break; |
12431 | } | |
70cc837d AM |
12432 | |
12433 | /* Assume any branch that needs a long branch stub might in fact | |
12434 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12435 | else if (dest - (isec->output_offset | |
12436 | + isec->output_section->vma | |
6911b7dc AM |
12437 | + rel->r_offset) + (1 << 25) |
12438 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12439 | ? h->other | |
12440 | : sym->st_other)) | |
4c52953f | 12441 | { |
70cc837d AM |
12442 | ret = 1; |
12443 | break; | |
12444 | } | |
12445 | ||
12446 | /* If calling back to a section in the process of being | |
12447 | tested, we can't say for sure that no toc adjusting stubs | |
12448 | are needed, so don't return zero. */ | |
12449 | else if (sym_sec->call_check_in_progress) | |
12450 | ret = 2; | |
12451 | ||
12452 | /* Branches to another section that itself doesn't have any TOC | |
12453 | references are OK. Recursively call ourselves to check. */ | |
12454 | else if (!sym_sec->call_check_done) | |
12455 | { | |
12456 | int recur; | |
12457 | ||
12458 | /* Mark current section as indeterminate, so that other | |
12459 | sections that call back to current won't be marked as | |
12460 | known. */ | |
12461 | isec->call_check_in_progress = 1; | |
12462 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12463 | isec->call_check_in_progress = 0; | |
12464 | ||
4c52953f AM |
12465 | if (recur != 0) |
12466 | { | |
70cc837d AM |
12467 | ret = recur; |
12468 | if (recur != 2) | |
12469 | break; | |
4c52953f AM |
12470 | } |
12471 | } | |
4c52953f | 12472 | } |
70cc837d AM |
12473 | |
12474 | if (local_syms != NULL | |
12475 | && (elf_symtab_hdr (isec->owner).contents | |
12476 | != (unsigned char *) local_syms)) | |
12477 | free (local_syms); | |
12478 | if (elf_section_data (isec)->relocs != relstart) | |
12479 | free (relstart); | |
9b5ecbd0 AM |
12480 | } |
12481 | ||
70cc837d AM |
12482 | if ((ret & 1) == 0 |
12483 | && isec->map_head.s != NULL | |
12484 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12485 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12486 | { | |
12487 | if (isec->map_head.s->has_toc_reloc | |
12488 | || isec->map_head.s->makes_toc_func_call) | |
12489 | ret = 1; | |
12490 | else if (!isec->map_head.s->call_check_done) | |
12491 | { | |
12492 | int recur; | |
12493 | isec->call_check_in_progress = 1; | |
12494 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12495 | isec->call_check_in_progress = 0; | |
12496 | if (recur != 0) | |
12497 | ret = recur; | |
12498 | } | |
12499 | } | |
12500 | ||
12501 | if (ret == 1) | |
12502 | isec->makes_toc_func_call = 1; | |
4c52953f | 12503 | |
9b5ecbd0 AM |
12504 | return ret; |
12505 | } | |
12506 | ||
721956f4 AM |
12507 | /* The linker repeatedly calls this function for each input section, |
12508 | in the order that input sections are linked into output sections. | |
12509 | Build lists of input sections to determine groupings between which | |
12510 | we may insert linker stubs. */ | |
12511 | ||
9b5ecbd0 | 12512 | bfd_boolean |
4ce794b7 | 12513 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12514 | { |
12515 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12516 | ||
4dfe6ac6 NC |
12517 | if (htab == NULL) |
12518 | return FALSE; | |
12519 | ||
734b6cf9 | 12520 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12521 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12522 | { |
3d6f9012 AM |
12523 | /* This happens to make the list in reverse order, |
12524 | which is what we want. */ | |
6f20ed8a AM |
12525 | htab->sec_info[isec->id].u.list |
12526 | = htab->sec_info[isec->output_section->id].u.list; | |
12527 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12528 | } |
ad8e1ba5 | 12529 | |
4c52953f | 12530 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12531 | { |
8b974ba3 AM |
12532 | /* Analyse sections that aren't already flagged as needing a |
12533 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12534 | .fixup contains branches, but only back to the function that | |
12535 | hit an exception. */ | |
12536 | if (!(isec->has_toc_reloc | |
12537 | || (isec->flags & SEC_CODE) == 0 | |
12538 | || strcmp (isec->name, ".fixup") == 0 | |
12539 | || isec->call_check_done)) | |
12540 | { | |
12541 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12542 | return FALSE; |
8b974ba3 AM |
12543 | } |
12544 | /* Make all sections use the TOC assigned for this object file. | |
12545 | This will be wrong for pasted sections; We fix that in | |
12546 | check_pasted_section(). */ | |
12547 | if (elf_gp (isec->owner) != 0) | |
12548 | htab->toc_curr = elf_gp (isec->owner); | |
12549 | } | |
12550 | ||
6f20ed8a | 12551 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12552 | return TRUE; |
721956f4 AM |
12553 | } |
12554 | ||
70cc837d AM |
12555 | /* Check that all .init and .fini sections use the same toc, if they |
12556 | have toc relocs. */ | |
12557 | ||
12558 | static bfd_boolean | |
12559 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12560 | { | |
12561 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12562 | ||
12563 | if (o != NULL) | |
12564 | { | |
12565 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12566 | bfd_vma toc_off = 0; | |
12567 | asection *i; | |
12568 | ||
12569 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12570 | if (i->has_toc_reloc) | |
12571 | { | |
12572 | if (toc_off == 0) | |
6f20ed8a AM |
12573 | toc_off = htab->sec_info[i->id].toc_off; |
12574 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12575 | return FALSE; |
12576 | } | |
6683a28d AM |
12577 | |
12578 | if (toc_off == 0) | |
12579 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12580 | if (i->makes_toc_func_call) | |
12581 | { | |
6f20ed8a | 12582 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12583 | break; |
12584 | } | |
12585 | ||
70cc837d AM |
12586 | /* Make sure the whole pasted function uses the same toc offset. */ |
12587 | if (toc_off != 0) | |
12588 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12589 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12590 | } |
12591 | return TRUE; | |
12592 | } | |
12593 | ||
12594 | bfd_boolean | |
12595 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12596 | { | |
12597 | return (check_pasted_section (info, ".init") | |
12598 | & check_pasted_section (info, ".fini")); | |
12599 | } | |
12600 | ||
721956f4 AM |
12601 | /* See whether we can group stub sections together. Grouping stub |
12602 | sections may result in fewer stubs. More importantly, we need to | |
12603 | put all .init* and .fini* stubs at the beginning of the .init or | |
12604 | .fini output sections respectively, because glibc splits the | |
12605 | _init and _fini functions into multiple parts. Putting a stub in | |
12606 | the middle of a function is not a good idea. */ | |
12607 | ||
6f20ed8a AM |
12608 | static bfd_boolean |
12609 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12610 | bfd_size_type stub_group_size, |
12611 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12612 | { |
6f20ed8a AM |
12613 | struct ppc_link_hash_table *htab; |
12614 | asection *osec; | |
7c8fe5c4 AM |
12615 | bfd_boolean suppress_size_errors; |
12616 | ||
6f20ed8a AM |
12617 | htab = ppc_hash_table (info); |
12618 | if (htab == NULL) | |
12619 | return FALSE; | |
12620 | ||
7c8fe5c4 | 12621 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12622 | if (stub_group_size == 1) |
12623 | { | |
12624 | /* Default values. */ | |
12625 | if (stubs_always_before_branch) | |
09f92717 | 12626 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12627 | else |
09f92717 | 12628 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12629 | suppress_size_errors = TRUE; |
12630 | } | |
12631 | ||
6f20ed8a | 12632 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12633 | { |
6f20ed8a AM |
12634 | asection *tail; |
12635 | ||
12636 | if (osec->id >= htab->sec_info_arr_size) | |
12637 | continue; | |
12638 | ||
12639 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12640 | while (tail != NULL) |
721956f4 | 12641 | { |
734b6cf9 AM |
12642 | asection *curr; |
12643 | asection *prev; | |
12644 | bfd_size_type total; | |
12645 | bfd_boolean big_sec; | |
12646 | bfd_vma curr_toc; | |
6f20ed8a | 12647 | struct map_stub *group; |
09f92717 | 12648 | bfd_size_type group_size; |
734b6cf9 AM |
12649 | |
12650 | curr = tail; | |
eea6121a | 12651 | total = tail->size; |
09f92717 AM |
12652 | group_size = (ppc64_elf_section_data (tail) != NULL |
12653 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12654 | ? stub_group_size >> 10 : stub_group_size); | |
12655 | ||
12656 | big_sec = total > group_size; | |
7c8fe5c4 | 12657 | if (big_sec && !suppress_size_errors) |
695344c0 | 12658 | /* xgettext:c-format */ |
871b3ab2 | 12659 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12660 | tail->owner, tail); |
6f20ed8a | 12661 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12662 | |
6f20ed8a | 12663 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12664 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12665 | < (ppc64_elf_section_data (prev) != NULL |
12666 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12667 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12668 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12669 | curr = prev; |
12670 | ||
12671 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12672 | than group_size and thus can be handled by one stub |
734b6cf9 | 12673 | section. (or the tail section is itself larger than |
09f92717 AM |
12674 | group_size, in which case we may be toast.) We should |
12675 | really be keeping track of the total size of stubs added | |
12676 | here, as stubs contribute to the final output section | |
12677 | size. That's a little tricky, and this way will only | |
12678 | break if stubs added make the total size more than 2^25, | |
12679 | ie. for the default stub_group_size, if stubs total more | |
12680 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12681 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12682 | if (group == NULL) | |
12683 | return FALSE; | |
12684 | group->link_sec = curr; | |
12685 | group->stub_sec = NULL; | |
a4b6fadd | 12686 | group->needs_save_res = 0; |
df136d64 AM |
12687 | group->lr_restore = 0; |
12688 | group->eh_size = 0; | |
12689 | group->eh_base = 0; | |
a4b6fadd AM |
12690 | group->next = htab->group; |
12691 | htab->group = group; | |
734b6cf9 | 12692 | do |
721956f4 | 12693 | { |
6f20ed8a | 12694 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12695 | /* Set up this stub group. */ |
6f20ed8a | 12696 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12697 | } |
734b6cf9 AM |
12698 | while (tail != curr && (tail = prev) != NULL); |
12699 | ||
09f92717 | 12700 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12701 | bytes before the stub section can be handled by it too. |
12702 | Don't do this if we have a really large section after the | |
12703 | stubs, as adding more stubs increases the chance that | |
12704 | branches may not reach into the stub section. */ | |
12705 | if (!stubs_always_before_branch && !big_sec) | |
12706 | { | |
12707 | total = 0; | |
12708 | while (prev != NULL | |
12709 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12710 | < (ppc64_elf_section_data (prev) != NULL |
12711 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
12712 | ? (group_size = stub_group_size >> 10) |
12713 | : group_size)) | |
6f20ed8a | 12714 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12715 | { |
12716 | tail = prev; | |
6f20ed8a AM |
12717 | prev = htab->sec_info[tail->id].u.list; |
12718 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12719 | } |
12720 | } | |
12721 | tail = prev; | |
721956f4 AM |
12722 | } |
12723 | } | |
6f20ed8a | 12724 | return TRUE; |
721956f4 AM |
12725 | } |
12726 | ||
58d180e8 AM |
12727 | static const unsigned char glink_eh_frame_cie[] = |
12728 | { | |
12729 | 0, 0, 0, 16, /* length. */ | |
12730 | 0, 0, 0, 0, /* id. */ | |
12731 | 1, /* CIE version. */ | |
12732 | 'z', 'R', 0, /* Augmentation string. */ | |
12733 | 4, /* Code alignment. */ | |
12734 | 0x78, /* Data alignment. */ | |
12735 | 65, /* RA reg. */ | |
12736 | 1, /* Augmentation size. */ | |
12737 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12738 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12739 | }; |
12740 | ||
d969d15f AM |
12741 | /* Stripping output sections is normally done before dynamic section |
12742 | symbols have been allocated. This function is called later, and | |
12743 | handles cases like htab->brlt which is mapped to its own output | |
12744 | section. */ | |
12745 | ||
12746 | static void | |
12747 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12748 | { | |
12749 | if (isec->size == 0 | |
12750 | && isec->output_section->size == 0 | |
53d8967a | 12751 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12752 | && !bfd_section_removed_from_list (info->output_bfd, |
12753 | isec->output_section) | |
12754 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12755 | { | |
12756 | isec->output_section->flags |= SEC_EXCLUDE; | |
12757 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12758 | info->output_bfd->section_count--; | |
12759 | } | |
12760 | } | |
12761 | ||
721956f4 AM |
12762 | /* Determine and set the size of the stub section for a final link. |
12763 | ||
12764 | The basic idea here is to examine all the relocations looking for | |
12765 | PC-relative calls to a target that is unreachable with a "bl" | |
12766 | instruction. */ | |
12767 | ||
b34976b6 | 12768 | bfd_boolean |
e7d1c40c | 12769 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12770 | { |
12771 | bfd_size_type stub_group_size; | |
b34976b6 | 12772 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12773 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12774 | ||
4dfe6ac6 NC |
12775 | if (htab == NULL) |
12776 | return FALSE; | |
12777 | ||
0e1862bb | 12778 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12779 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12780 | if (!htab->opd_abi) |
e7d1c40c AM |
12781 | htab->params->plt_thread_safe = 0; |
12782 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12783 | { |
e2458743 | 12784 | static const char *const thread_starter[] = |
794e51c0 AM |
12785 | { |
12786 | "pthread_create", | |
12787 | /* libstdc++ */ | |
12788 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12789 | /* librt */ | |
12790 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12791 | "mq_notify", "create_timer", | |
12792 | /* libanl */ | |
12793 | "getaddrinfo_a", | |
12794 | /* libgomp */ | |
2300b5a1 | 12795 | "GOMP_parallel", |
794e51c0 | 12796 | "GOMP_parallel_start", |
2300b5a1 | 12797 | "GOMP_parallel_loop_static", |
794e51c0 | 12798 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12799 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12800 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12801 | "GOMP_parallel_loop_guided", |
794e51c0 | 12802 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12803 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12804 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12805 | "GOMP_parallel_sections", |
68ffbac6 | 12806 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12807 | /* libgo */ |
12808 | "__go_go", | |
794e51c0 AM |
12809 | }; |
12810 | unsigned i; | |
12811 | ||
a4b6fadd | 12812 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12813 | { |
12814 | struct elf_link_hash_entry *h; | |
12815 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12816 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12817 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12818 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12819 | break; |
12820 | } | |
12821 | } | |
e7d1c40c AM |
12822 | stubs_always_before_branch = htab->params->group_size < 0; |
12823 | if (htab->params->group_size < 0) | |
12824 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12825 | else |
e7d1c40c | 12826 | stub_group_size = htab->params->group_size; |
721956f4 | 12827 | |
6f20ed8a AM |
12828 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12829 | return FALSE; | |
721956f4 | 12830 | |
c9301e31 AM |
12831 | #define STUB_SHRINK_ITER 20 |
12832 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12833 | exit on a stub section shrinking. This is to break out of a | |
12834 | pathological case where adding stubs on one iteration decreases | |
12835 | section gaps (perhaps due to alignment), which then requires | |
12836 | fewer or smaller stubs on the next iteration. */ | |
12837 | ||
721956f4 AM |
12838 | while (1) |
12839 | { | |
12840 | bfd *input_bfd; | |
12841 | unsigned int bfd_indx; | |
a4b6fadd | 12842 | struct map_stub *group; |
721956f4 AM |
12843 | |
12844 | htab->stub_iteration += 1; | |
721956f4 AM |
12845 | |
12846 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12847 | input_bfd != NULL; | |
c72f2fb2 | 12848 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12849 | { |
12850 | Elf_Internal_Shdr *symtab_hdr; | |
12851 | asection *section; | |
6cdc0ccc | 12852 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12853 | |
0c8d6e5c | 12854 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12855 | continue; |
12856 | ||
721956f4 | 12857 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12858 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12859 | if (symtab_hdr->sh_info == 0) |
12860 | continue; | |
12861 | ||
721956f4 AM |
12862 | /* Walk over each section attached to the input bfd. */ |
12863 | for (section = input_bfd->sections; | |
12864 | section != NULL; | |
12865 | section = section->next) | |
12866 | { | |
721956f4 | 12867 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12868 | |
12869 | /* If there aren't any relocs, then there's nothing more | |
12870 | to do. */ | |
12871 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12872 | || (section->flags & SEC_ALLOC) == 0 |
12873 | || (section->flags & SEC_LOAD) == 0 | |
12874 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12875 | || section->reloc_count == 0) |
12876 | continue; | |
12877 | ||
12878 | /* If this section is a link-once section that will be | |
12879 | discarded, then don't create any stubs. */ | |
12880 | if (section->output_section == NULL | |
927be08e | 12881 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12882 | continue; |
12883 | ||
1e2f5b6e AM |
12884 | /* Get the relocs. */ |
12885 | internal_relocs | |
4ce794b7 | 12886 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12887 | info->keep_memory); |
721956f4 | 12888 | if (internal_relocs == NULL) |
1e2f5b6e | 12889 | goto error_ret_free_local; |
721956f4 AM |
12890 | |
12891 | /* Now examine each relocation. */ | |
12892 | irela = internal_relocs; | |
12893 | irelaend = irela + section->reloc_count; | |
12894 | for (; irela < irelaend; irela++) | |
12895 | { | |
4ce794b7 AM |
12896 | enum elf_ppc64_reloc_type r_type; |
12897 | unsigned int r_indx; | |
721956f4 AM |
12898 | enum ppc_stub_type stub_type; |
12899 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12900 | asection *sym_sec, *code_sec; |
e054468f | 12901 | bfd_vma sym_value, code_value; |
721956f4 | 12902 | bfd_vma destination; |
6911b7dc | 12903 | unsigned long local_off; |
8843416a | 12904 | bfd_boolean ok_dest; |
721956f4 | 12905 | struct ppc_link_hash_entry *hash; |
8387904d | 12906 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12907 | struct elf_link_hash_entry *h; |
12908 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12909 | char *stub_name; |
12910 | const asection *id_sec; | |
74f0fb50 | 12911 | struct _opd_sec_data *opd; |
e054468f | 12912 | struct plt_entry *plt_ent; |
721956f4 AM |
12913 | |
12914 | r_type = ELF64_R_TYPE (irela->r_info); | |
12915 | r_indx = ELF64_R_SYM (irela->r_info); | |
12916 | ||
4ce794b7 | 12917 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12918 | { |
12919 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12920 | goto error_ret_free_internal; |
721956f4 AM |
12921 | } |
12922 | ||
12923 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 12924 | if (r_type != R_PPC64_REL24 |
05d0e962 | 12925 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
12926 | && r_type != R_PPC64_REL14 |
12927 | && r_type != R_PPC64_REL14_BRTAKEN | |
12928 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12929 | continue; |
12930 | ||
12931 | /* Now determine the call target, its name, value, | |
12932 | section. */ | |
411e1bfb AM |
12933 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12934 | r_indx, input_bfd)) | |
12935 | goto error_ret_free_internal; | |
12936 | hash = (struct ppc_link_hash_entry *) h; | |
12937 | ||
8843416a | 12938 | ok_dest = FALSE; |
8387904d | 12939 | fdh = NULL; |
7fe2b9a6 | 12940 | sym_value = 0; |
411e1bfb | 12941 | if (hash == NULL) |
721956f4 | 12942 | { |
411e1bfb | 12943 | sym_value = sym->st_value; |
c27b8c2a AM |
12944 | if (sym_sec != NULL |
12945 | && sym_sec->output_section != NULL) | |
12946 | ok_dest = TRUE; | |
721956f4 | 12947 | } |
7fe2b9a6 AM |
12948 | else if (hash->elf.root.type == bfd_link_hash_defined |
12949 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12950 | { | |
12951 | sym_value = hash->elf.root.u.def.value; | |
12952 | if (sym_sec->output_section != NULL) | |
12953 | ok_dest = TRUE; | |
12954 | } | |
12955 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12956 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12957 | { |
99877b66 | 12958 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12959 | use the func descriptor sym instead if it is |
12960 | defined. */ | |
ceb1f1ef | 12961 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12962 | && hash->oh != NULL) |
8387904d | 12963 | { |
8c5b4e52 | 12964 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12965 | if (fdh->elf.root.type == bfd_link_hash_defined |
12966 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12967 | { | |
12968 | sym_sec = fdh->elf.root.u.def.section; | |
12969 | sym_value = fdh->elf.root.u.def.value; | |
12970 | if (sym_sec->output_section != NULL) | |
12971 | ok_dest = TRUE; | |
12972 | } | |
99877b66 AM |
12973 | else |
12974 | fdh = NULL; | |
8387904d | 12975 | } |
7fe2b9a6 AM |
12976 | } |
12977 | else | |
12978 | { | |
12979 | bfd_set_error (bfd_error_bad_value); | |
12980 | goto error_ret_free_internal; | |
721956f4 AM |
12981 | } |
12982 | ||
8843416a | 12983 | destination = 0; |
6911b7dc | 12984 | local_off = 0; |
8843416a AM |
12985 | if (ok_dest) |
12986 | { | |
12987 | sym_value += irela->r_addend; | |
12988 | destination = (sym_value | |
12989 | + sym_sec->output_offset | |
12990 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12991 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12992 | ? hash->elf.other | |
12993 | : sym->st_other); | |
8843416a AM |
12994 | } |
12995 | ||
8387904d | 12996 | code_sec = sym_sec; |
e054468f | 12997 | code_value = sym_value; |
74f0fb50 AM |
12998 | opd = get_opd_info (sym_sec); |
12999 | if (opd != NULL) | |
8387904d AM |
13000 | { |
13001 | bfd_vma dest; | |
13002 | ||
74f0fb50 | 13003 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13004 | { |
51aecdc5 | 13005 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13006 | if (adjust == -1) |
13007 | continue; | |
e054468f | 13008 | code_value += adjust; |
8387904d AM |
13009 | sym_value += adjust; |
13010 | } | |
13011 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 13012 | &code_sec, &code_value, FALSE); |
8387904d AM |
13013 | if (dest != (bfd_vma) -1) |
13014 | { | |
13015 | destination = dest; | |
13016 | if (fdh != NULL) | |
13017 | { | |
13018 | /* Fixup old ABI sym to point at code | |
13019 | entry. */ | |
99877b66 | 13020 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13021 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13022 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13023 | } |
13024 | } | |
13025 | } | |
13026 | ||
721956f4 | 13027 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13028 | plt_ent = NULL; |
721956f4 | 13029 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13030 | &plt_ent, destination, |
13031 | local_off); | |
ad8e1ba5 | 13032 | |
05d0e962 AM |
13033 | if (r_type == R_PPC64_REL24_NOTOC) |
13034 | { | |
13035 | if (stub_type == ppc_stub_plt_call) | |
13036 | stub_type = ppc_stub_plt_call_notoc; | |
13037 | else if (stub_type == ppc_stub_long_branch | |
13038 | || (code_sec != NULL | |
13039 | && code_sec->output_section != NULL | |
13040 | && (((hash ? hash->elf.other : sym->st_other) | |
13041 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 13042 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
13043 | stub_type = ppc_stub_long_branch_notoc; |
13044 | } | |
13045 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13046 | { |
13047 | /* Check whether we need a TOC adjusting stub. | |
13048 | Since the linker pastes together pieces from | |
13049 | different object files when creating the | |
13050 | _init and _fini functions, it may be that a | |
13051 | call to what looks like a local sym is in | |
13052 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13053 | if ((code_sec != NULL |
13054 | && code_sec->output_section != NULL | |
13055 | && (htab->sec_info[code_sec->id].toc_off | |
13056 | != htab->sec_info[section->id].toc_off) | |
13057 | && (code_sec->has_toc_reloc | |
13058 | || code_sec->makes_toc_func_call)) | |
13059 | || (((hash ? hash->elf.other : sym->st_other) | |
13060 | & STO_PPC64_LOCAL_MASK) | |
13061 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13062 | stub_type = ppc_stub_long_branch_r2off; |
13063 | } | |
13064 | ||
721956f4 AM |
13065 | if (stub_type == ppc_stub_none) |
13066 | continue; | |
13067 | ||
411e1bfb AM |
13068 | /* __tls_get_addr calls might be eliminated. */ |
13069 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13070 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13071 | && hash != NULL |
8387904d AM |
13072 | && (hash == htab->tls_get_addr |
13073 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
13074 | && section->has_tls_reloc |
13075 | && irela != internal_relocs) | |
13076 | { | |
13077 | /* Get tls info. */ | |
f961d9dd | 13078 | unsigned char *tls_mask; |
411e1bfb | 13079 | |
3a71aa26 | 13080 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13081 | irela - 1, input_bfd)) |
13082 | goto error_ret_free_internal; | |
37da22e5 | 13083 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
13084 | continue; |
13085 | } | |
13086 | ||
f378ab09 | 13087 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13088 | { |
6e1816be AM |
13089 | if (!htab->opd_abi |
13090 | && htab->params->plt_localentry0 != 0 | |
13091 | && is_elfv2_localentry0 (&hash->elf)) | |
13092 | htab->has_plt_localentry0 = 1; | |
13093 | else if (irela + 1 < irelaend | |
13094 | && irela[1].r_offset == irela->r_offset + 4 | |
13095 | && (ELF64_R_TYPE (irela[1].r_info) | |
13096 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13097 | { |
13098 | if (!tocsave_find (htab, INSERT, | |
13099 | &local_syms, irela + 1, input_bfd)) | |
13100 | goto error_ret_free_internal; | |
13101 | } | |
f378ab09 AM |
13102 | else |
13103 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13104 | } |
3b421ab3 | 13105 | |
721956f4 | 13106 | /* Support for grouping stub sections. */ |
6f20ed8a | 13107 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13108 | |
13109 | /* Get the name of this stub. */ | |
13110 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13111 | if (!stub_name) | |
13112 | goto error_ret_free_internal; | |
13113 | ||
13114 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 13115 | stub_name, FALSE, FALSE); |
721956f4 AM |
13116 | if (stub_entry != NULL) |
13117 | { | |
05d0e962 AM |
13118 | enum ppc_stub_type old_type; |
13119 | /* A stub has already been created, but it may | |
13120 | not be the required type. We shouldn't be | |
13121 | transitioning from plt_call to long_branch | |
13122 | stubs or vice versa, but we might be | |
13123 | upgrading from plt_call to plt_call_r2save or | |
13124 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13125 | free (stub_name); |
05d0e962 AM |
13126 | old_type = stub_entry->stub_type; |
13127 | switch (old_type) | |
13128 | { | |
13129 | default: | |
13130 | abort (); | |
13131 | ||
13132 | case ppc_stub_save_res: | |
13133 | continue; | |
13134 | ||
13135 | case ppc_stub_plt_call: | |
13136 | case ppc_stub_plt_call_r2save: | |
13137 | case ppc_stub_plt_call_notoc: | |
13138 | case ppc_stub_plt_call_both: | |
13139 | if (stub_type == ppc_stub_plt_call) | |
13140 | continue; | |
13141 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13142 | { | |
13143 | if (old_type == ppc_stub_plt_call_notoc) | |
13144 | stub_type = ppc_stub_plt_call_both; | |
13145 | } | |
13146 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13147 | { | |
13148 | if (old_type == ppc_stub_plt_call_r2save) | |
13149 | stub_type = ppc_stub_plt_call_both; | |
13150 | } | |
13151 | else | |
13152 | abort (); | |
13153 | break; | |
13154 | ||
13155 | case ppc_stub_plt_branch: | |
13156 | case ppc_stub_plt_branch_r2off: | |
13157 | case ppc_stub_plt_branch_notoc: | |
13158 | case ppc_stub_plt_branch_both: | |
13159 | old_type += (ppc_stub_long_branch | |
13160 | - ppc_stub_plt_branch); | |
13161 | /* Fall through. */ | |
13162 | case ppc_stub_long_branch: | |
13163 | case ppc_stub_long_branch_r2off: | |
13164 | case ppc_stub_long_branch_notoc: | |
13165 | case ppc_stub_long_branch_both: | |
13166 | if (stub_type == ppc_stub_long_branch) | |
13167 | continue; | |
13168 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13169 | { | |
13170 | if (old_type == ppc_stub_long_branch_notoc) | |
13171 | stub_type = ppc_stub_long_branch_both; | |
13172 | } | |
13173 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13174 | { | |
13175 | if (old_type == ppc_stub_long_branch_r2off) | |
13176 | stub_type = ppc_stub_long_branch_both; | |
13177 | } | |
13178 | else | |
13179 | abort (); | |
13180 | break; | |
13181 | } | |
13182 | if (old_type < stub_type) | |
794e51c0 | 13183 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13184 | continue; |
13185 | } | |
13186 | ||
25f53a85 | 13187 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13188 | if (stub_entry == NULL) |
13189 | { | |
13190 | free (stub_name); | |
6cdc0ccc AM |
13191 | error_ret_free_internal: |
13192 | if (elf_section_data (section)->relocs == NULL) | |
13193 | free (internal_relocs); | |
13194 | error_ret_free_local: | |
13195 | if (local_syms != NULL | |
13196 | && (symtab_hdr->contents | |
13197 | != (unsigned char *) local_syms)) | |
13198 | free (local_syms); | |
b34976b6 | 13199 | return FALSE; |
721956f4 AM |
13200 | } |
13201 | ||
ad8e1ba5 | 13202 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13203 | if (stub_type >= ppc_stub_plt_call |
13204 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13205 | { |
05d0e962 AM |
13206 | stub_entry->target_value = sym_value; |
13207 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13208 | } |
13209 | else | |
13210 | { | |
05d0e962 AM |
13211 | stub_entry->target_value = code_value; |
13212 | stub_entry->target_section = code_sec; | |
e054468f | 13213 | } |
721956f4 | 13214 | stub_entry->h = hash; |
e054468f | 13215 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13216 | stub_entry->symtype |
13217 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13218 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13219 | |
3d58e1fc AM |
13220 | if (hash != NULL |
13221 | && (hash->elf.root.type == bfd_link_hash_defined | |
13222 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13223 | htab->stub_globals += 1; |
721956f4 AM |
13224 | } |
13225 | ||
13226 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13227 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13228 | free (internal_relocs); |
721956f4 | 13229 | } |
6cdc0ccc AM |
13230 | |
13231 | if (local_syms != NULL | |
13232 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13233 | { | |
13234 | if (!info->keep_memory) | |
13235 | free (local_syms); | |
13236 | else | |
13237 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13238 | } | |
721956f4 AM |
13239 | } |
13240 | ||
5c3dead3 | 13241 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13242 | stub sections. */ |
d4aaa2a0 | 13243 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13244 | { |
13245 | group->lr_restore = 0; | |
13246 | group->eh_size = 0; | |
13247 | if (group->stub_sec != NULL) | |
13248 | { | |
13249 | asection *stub_sec = group->stub_sec; | |
13250 | ||
13251 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13252 | || stub_sec->rawsize < stub_sec->size) | |
13253 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13254 | stub_sec->rawsize = stub_sec->size; | |
13255 | stub_sec->size = 0; | |
13256 | stub_sec->reloc_count = 0; | |
13257 | stub_sec->flags &= ~SEC_RELOC; | |
13258 | } | |
13259 | } | |
eea6121a | 13260 | |
ba21f564 AM |
13261 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13262 | || htab->brlt->rawsize < htab->brlt->size) | |
13263 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13264 | htab->brlt->size = 0; |
84f5d08e AM |
13265 | htab->brlt->reloc_count = 0; |
13266 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13267 | if (htab->relbrlt != NULL) |
eea6121a | 13268 | htab->relbrlt->size = 0; |
721956f4 | 13269 | |
63bc6f6c | 13270 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13271 | |
a4b6fadd AM |
13272 | for (group = htab->group; group != NULL; group = group->next) |
13273 | if (group->needs_save_res) | |
13274 | group->stub_sec->size += htab->sfpr->size; | |
13275 | ||
176a0d42 AM |
13276 | if (info->emitrelocations |
13277 | && htab->glink != NULL && htab->glink->size != 0) | |
13278 | { | |
13279 | htab->glink->reloc_count = 1; | |
13280 | htab->glink->flags |= SEC_RELOC; | |
13281 | } | |
13282 | ||
58d180e8 AM |
13283 | if (htab->glink_eh_frame != NULL |
13284 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13285 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13286 | { |
2e0ce1c8 | 13287 | size_t size = 0, align = 4; |
58d180e8 | 13288 | |
d4aaa2a0 | 13289 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13290 | if (group->eh_size != 0) |
13291 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13292 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13293 | size += (24 + align - 1) & -align; |
58d180e8 | 13294 | if (size != 0) |
2e0ce1c8 AM |
13295 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13296 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13297 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13298 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13299 | htab->glink_eh_frame->size = size; | |
13300 | } | |
13301 | ||
e7d1c40c | 13302 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13303 | for (group = htab->group; group != NULL; group = group->next) |
13304 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13305 | { |
13306 | int align = abs (htab->params->plt_stub_align); | |
13307 | group->stub_sec->size | |
13308 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13309 | } | |
d4aaa2a0 AM |
13310 | |
13311 | for (group = htab->group; group != NULL; group = group->next) | |
13312 | if (group->stub_sec != NULL | |
13313 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13314 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13315 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13316 | break; |
13317 | ||
d4aaa2a0 | 13318 | if (group == NULL |
ba21f564 AM |
13319 | && (htab->brlt->rawsize == htab->brlt->size |
13320 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13321 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
13322 | && (htab->glink_eh_frame == NULL |
13323 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
13324 | break; |
13325 | ||
721956f4 | 13326 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13327 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13328 | } |
13329 | ||
da44f4e5 AM |
13330 | if (htab->glink_eh_frame != NULL |
13331 | && htab->glink_eh_frame->size != 0) | |
13332 | { | |
13333 | bfd_vma val; | |
13334 | bfd_byte *p, *last_fde; | |
13335 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13336 | struct map_stub *group; |
da44f4e5 | 13337 | |
df136d64 AM |
13338 | /* It is necessary to at least have a rough outline of the |
13339 | linker generated CIEs and FDEs written before | |
13340 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13341 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13342 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13343 | if (p == NULL) | |
13344 | return FALSE; | |
13345 | htab->glink_eh_frame->contents = p; | |
13346 | last_fde = p; | |
2e0ce1c8 | 13347 | align = 4; |
da44f4e5 AM |
13348 | |
13349 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13350 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13351 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13352 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13353 | p += last_fde_len + 4; |
da44f4e5 | 13354 | |
d4aaa2a0 | 13355 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13356 | if (group->eh_size != 0) |
da44f4e5 | 13357 | { |
df136d64 | 13358 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13359 | last_fde = p; |
df136d64 | 13360 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13361 | /* FDE length. */ |
2e0ce1c8 | 13362 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13363 | p += 4; |
13364 | /* CIE pointer. */ | |
13365 | val = p - htab->glink_eh_frame->contents; | |
13366 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13367 | p += 4; | |
13368 | /* Offset to stub section, written later. */ | |
13369 | p += 4; | |
13370 | /* stub section size. */ | |
d4aaa2a0 | 13371 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13372 | p += 4; |
13373 | /* Augmentation. */ | |
13374 | p += 1; | |
df136d64 AM |
13375 | /* Make sure we don't have all nops. This is enough for |
13376 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13377 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13378 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13379 | } |
13380 | if (htab->glink != NULL && htab->glink->size != 0) | |
13381 | { | |
13382 | last_fde = p; | |
2e0ce1c8 | 13383 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13384 | /* FDE length. */ |
2e0ce1c8 | 13385 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13386 | p += 4; |
13387 | /* CIE pointer. */ | |
13388 | val = p - htab->glink_eh_frame->contents; | |
13389 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13390 | p += 4; | |
13391 | /* Offset to .glink, written later. */ | |
13392 | p += 4; | |
13393 | /* .glink size. */ | |
13394 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13395 | p += 4; | |
13396 | /* Augmentation. */ | |
13397 | p += 1; | |
13398 | ||
13399 | *p++ = DW_CFA_advance_loc + 1; | |
13400 | *p++ = DW_CFA_register; | |
13401 | *p++ = 65; | |
9f08fa5c | 13402 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13403 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13404 | *p++ = DW_CFA_restore_extended; |
13405 | *p++ = 65; | |
2e0ce1c8 | 13406 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13407 | } |
13408 | /* Subsume any padding into the last FDE if user .eh_frame | |
13409 | sections are aligned more than glink_eh_frame. Otherwise any | |
13410 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13411 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13412 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13413 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13414 | htab->glink_eh_frame->size = size + pad; |
13415 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13416 | } | |
13417 | ||
d969d15f AM |
13418 | maybe_strip_output (info, htab->brlt); |
13419 | if (htab->glink_eh_frame != NULL) | |
13420 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13421 | |
b34976b6 | 13422 | return TRUE; |
721956f4 AM |
13423 | } |
13424 | ||
13425 | /* Called after we have determined section placement. If sections | |
805fc799 | 13426 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13427 | |
805fc799 | 13428 | bfd_vma |
1c865ab2 | 13429 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13430 | { |
805fc799 | 13431 | asection *s; |
a27e685f | 13432 | bfd_vma TOCstart, adjust; |
721956f4 | 13433 | |
43417696 AM |
13434 | if (info != NULL) |
13435 | { | |
13436 | struct elf_link_hash_entry *h; | |
13437 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13438 | ||
13439 | if (is_elf_hash_table (htab) | |
13440 | && htab->hgot != NULL) | |
13441 | h = htab->hgot; | |
13442 | else | |
13443 | { | |
13444 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13445 | if (is_elf_hash_table (htab)) | |
13446 | htab->hgot = h; | |
13447 | } | |
13448 | if (h != NULL | |
13449 | && h->root.type == bfd_link_hash_defined | |
13450 | && !h->root.linker_def | |
13451 | && (!is_elf_hash_table (htab) | |
13452 | || h->def_regular)) | |
13453 | { | |
13454 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13455 | + h->root.u.def.section->output_offset | |
13456 | + h->root.u.def.section->output_section->vma); | |
13457 | _bfd_set_gp_value (obfd, TOCstart); | |
13458 | return TOCstart; | |
13459 | } | |
13460 | } | |
13461 | ||
805fc799 AM |
13462 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13463 | order. The TOC starts where the first of these sections starts. */ | |
13464 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13465 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13466 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13467 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13468 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13469 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13470 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13471 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13472 | { |
13473 | /* This may happen for | |
13474 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13475 | .toc directive | |
13476 | o bad linker script | |
13477 | o --gc-sections and empty TOC sections | |
13478 | ||
13479 | FIXME: Warn user? */ | |
13480 | ||
13481 | /* Look for a likely section. We probably won't even be | |
13482 | using TOCstart. */ | |
13483 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13484 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13485 | | SEC_EXCLUDE)) | |
805fc799 AM |
13486 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13487 | break; | |
721956f4 | 13488 | if (s == NULL) |
805fc799 | 13489 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13490 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13491 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13492 | break; | |
721956f4 | 13493 | if (s == NULL) |
805fc799 | 13494 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13495 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13496 | == SEC_ALLOC) | |
805fc799 | 13497 | break; |
721956f4 | 13498 | if (s == NULL) |
805fc799 | 13499 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13500 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13501 | break; |
13502 | } | |
721956f4 | 13503 | |
805fc799 AM |
13504 | TOCstart = 0; |
13505 | if (s != NULL) | |
13506 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13507 | |
a27e685f AM |
13508 | /* Force alignment. */ |
13509 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13510 | TOCstart -= adjust; | |
1c865ab2 AM |
13511 | _bfd_set_gp_value (obfd, TOCstart); |
13512 | ||
810d4e75 | 13513 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13514 | { |
13515 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13516 | ||
810d4e75 AM |
13517 | if (htab != NULL) |
13518 | { | |
13519 | if (htab->elf.hgot != NULL) | |
13520 | { | |
a27e685f | 13521 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13522 | htab->elf.hgot->root.u.def.section = s; |
13523 | } | |
13524 | } | |
13525 | else | |
1c865ab2 | 13526 | { |
810d4e75 AM |
13527 | struct bfd_link_hash_entry *bh = NULL; |
13528 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13529 | s, TOC_BASE_OFF - adjust, |
13530 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13531 | } |
13532 | } | |
805fc799 | 13533 | return TOCstart; |
721956f4 AM |
13534 | } |
13535 | ||
a345bc8d | 13536 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13537 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13538 | |
13539 | static bfd_boolean | |
49c09209 | 13540 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13541 | { |
13542 | struct bfd_link_info *info; | |
13543 | struct ppc_link_hash_table *htab; | |
49c09209 | 13544 | struct plt_entry *ent; |
a345bc8d AM |
13545 | asection *s; |
13546 | ||
13547 | if (h->root.type == bfd_link_hash_indirect) | |
13548 | return TRUE; | |
13549 | ||
49c09209 AM |
13550 | info = inf; |
13551 | htab = ppc_hash_table (info); | |
13552 | if (htab == NULL) | |
13553 | return FALSE; | |
13554 | ||
13555 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13556 | if (ent->plt.offset != (bfd_vma) -1) | |
13557 | { | |
13558 | /* This symbol has an entry in the procedure linkage | |
13559 | table. Set it up. */ | |
13560 | Elf_Internal_Rela rela; | |
2d7ad24e | 13561 | asection *plt, *relplt; |
49c09209 AM |
13562 | bfd_byte *loc; |
13563 | ||
13564 | if (!htab->elf.dynamic_sections_created | |
13565 | || h->dynindx == -1) | |
13566 | { | |
13567 | if (!(h->def_regular | |
13568 | && (h->root.type == bfd_link_hash_defined | |
13569 | || h->root.type == bfd_link_hash_defweak))) | |
13570 | continue; | |
2d7ad24e AM |
13571 | if (h->type == STT_GNU_IFUNC) |
13572 | { | |
13573 | plt = htab->elf.iplt; | |
13574 | relplt = htab->elf.irelplt; | |
13575 | htab->local_ifunc_resolver = 1; | |
13576 | if (htab->opd_abi) | |
13577 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13578 | else | |
13579 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13580 | } | |
49c09209 | 13581 | else |
2d7ad24e AM |
13582 | { |
13583 | plt = htab->pltlocal; | |
13584 | if (bfd_link_pic (info)) | |
13585 | { | |
13586 | relplt = htab->relpltlocal; | |
13587 | if (htab->opd_abi) | |
13588 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13589 | else | |
13590 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13591 | } | |
13592 | else | |
13593 | relplt = NULL; | |
13594 | } | |
49c09209 AM |
13595 | rela.r_addend = (h->root.u.def.value |
13596 | + h->root.u.def.section->output_offset | |
13597 | + h->root.u.def.section->output_section->vma | |
13598 | + ent->addend); | |
2d7ad24e AM |
13599 | |
13600 | if (relplt == NULL) | |
13601 | { | |
13602 | loc = plt->contents + ent->plt.offset; | |
13603 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13604 | if (htab->opd_abi) | |
13605 | { | |
13606 | bfd_vma toc = elf_gp (info->output_bfd); | |
13607 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13608 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13609 | } | |
13610 | } | |
13611 | else | |
13612 | { | |
13613 | rela.r_offset = (plt->output_section->vma | |
13614 | + plt->output_offset | |
13615 | + ent->plt.offset); | |
13616 | loc = relplt->contents + (relplt->reloc_count++ | |
13617 | * sizeof (Elf64_External_Rela)); | |
13618 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13619 | } | |
49c09209 AM |
13620 | } |
13621 | else | |
13622 | { | |
13623 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13624 | + htab->elf.splt->output_offset | |
13625 | + ent->plt.offset); | |
13626 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13627 | rela.r_addend = ent->addend; | |
13628 | loc = (htab->elf.srelplt->contents | |
13629 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13630 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13631 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13632 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13633 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13634 | } |
49c09209 AM |
13635 | } |
13636 | ||
a345bc8d AM |
13637 | if (!h->pointer_equality_needed) |
13638 | return TRUE; | |
13639 | ||
13640 | if (h->def_regular) | |
13641 | return TRUE; | |
13642 | ||
9e390558 | 13643 | s = htab->global_entry; |
49c09209 AM |
13644 | if (s == NULL || s->size == 0) |
13645 | return TRUE; | |
13646 | ||
13647 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13648 | if (ent->plt.offset != (bfd_vma) -1 | |
13649 | && ent->addend == 0) | |
a345bc8d AM |
13650 | { |
13651 | bfd_byte *p; | |
13652 | asection *plt; | |
13653 | bfd_vma off; | |
13654 | ||
a345bc8d | 13655 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13656 | plt = htab->elf.splt; |
a345bc8d AM |
13657 | if (!htab->elf.dynamic_sections_created |
13658 | || h->dynindx == -1) | |
2d7ad24e AM |
13659 | { |
13660 | if (h->type == STT_GNU_IFUNC) | |
13661 | plt = htab->elf.iplt; | |
13662 | else | |
13663 | plt = htab->pltlocal; | |
13664 | } | |
49c09209 | 13665 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13666 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13667 | ||
13668 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13669 | { | |
13670 | info->callbacks->einfo | |
c1c8c1ef | 13671 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13672 | h->root.root.string); |
13673 | bfd_set_error (bfd_error_bad_value); | |
13674 | htab->stub_error = TRUE; | |
13675 | } | |
13676 | ||
7341d5e2 AM |
13677 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13678 | if (htab->params->emit_stub_syms) | |
13679 | { | |
13680 | size_t len = strlen (h->root.root.string); | |
13681 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13682 | ||
13683 | if (name == NULL) | |
13684 | return FALSE; | |
13685 | ||
13686 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13687 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13688 | if (h == NULL) | |
13689 | return FALSE; | |
13690 | if (h->root.type == bfd_link_hash_new) | |
13691 | { | |
13692 | h->root.type = bfd_link_hash_defined; | |
13693 | h->root.u.def.section = s; | |
13694 | h->root.u.def.value = p - s->contents; | |
13695 | h->ref_regular = 1; | |
13696 | h->def_regular = 1; | |
13697 | h->ref_regular_nonweak = 1; | |
13698 | h->forced_local = 1; | |
13699 | h->non_elf = 0; | |
2ec55de3 | 13700 | h->root.linker_def = 1; |
7341d5e2 AM |
13701 | } |
13702 | } | |
13703 | ||
a345bc8d AM |
13704 | if (PPC_HA (off) != 0) |
13705 | { | |
13706 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13707 | p += 4; | |
13708 | } | |
13709 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13710 | p += 4; | |
13711 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13712 | p += 4; | |
407aa07c | 13713 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13714 | break; |
13715 | } | |
13716 | return TRUE; | |
13717 | } | |
13718 | ||
49c09209 AM |
13719 | /* Write PLT relocs for locals. */ |
13720 | ||
13721 | static bfd_boolean | |
13722 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
13723 | { | |
13724 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13725 | bfd *ibfd; | |
13726 | ||
13727 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13728 | { | |
13729 | struct got_entry **lgot_ents, **end_lgot_ents; | |
13730 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13731 | Elf_Internal_Shdr *symtab_hdr; | |
13732 | bfd_size_type locsymcount; | |
13733 | Elf_Internal_Sym *local_syms = NULL; | |
13734 | struct plt_entry *ent; | |
13735 | ||
13736 | if (!is_ppc64_elf (ibfd)) | |
13737 | continue; | |
13738 | ||
13739 | lgot_ents = elf_local_got_ents (ibfd); | |
13740 | if (!lgot_ents) | |
13741 | continue; | |
13742 | ||
13743 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13744 | locsymcount = symtab_hdr->sh_info; | |
13745 | end_lgot_ents = lgot_ents + locsymcount; | |
13746 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13747 | end_local_plt = local_plt + locsymcount; | |
13748 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
13749 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
13750 | if (ent->plt.offset != (bfd_vma) -1) | |
13751 | { | |
13752 | Elf_Internal_Sym *sym; | |
13753 | asection *sym_sec; | |
13754 | asection *plt, *relplt; | |
13755 | bfd_byte *loc; | |
13756 | bfd_vma val; | |
49c09209 AM |
13757 | |
13758 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
13759 | lplt - local_plt, ibfd)) | |
13760 | { | |
13761 | if (local_syms != NULL | |
13762 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13763 | free (local_syms); | |
13764 | return FALSE; | |
13765 | } | |
13766 | ||
13767 | val = sym->st_value + ent->addend; | |
ba85c15d AM |
13768 | if (ELF_ST_TYPE (sym->st_info) != STT_GNU_IFUNC) |
13769 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
49c09209 AM |
13770 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
13771 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
13772 | ||
2d7ad24e AM |
13773 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
13774 | { | |
13775 | htab->local_ifunc_resolver = 1; | |
13776 | plt = htab->elf.iplt; | |
13777 | relplt = htab->elf.irelplt; | |
13778 | } | |
13779 | else | |
13780 | { | |
13781 | plt = htab->pltlocal; | |
13782 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
13783 | } | |
49c09209 | 13784 | |
2d7ad24e AM |
13785 | if (relplt == NULL) |
13786 | { | |
13787 | loc = plt->contents + ent->plt.offset; | |
13788 | bfd_put_64 (info->output_bfd, val, loc); | |
13789 | if (htab->opd_abi) | |
13790 | { | |
13791 | bfd_vma toc = elf_gp (ibfd); | |
13792 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13793 | } | |
13794 | } | |
49c09209 | 13795 | else |
2d7ad24e AM |
13796 | { |
13797 | Elf_Internal_Rela rela; | |
13798 | rela.r_offset = (ent->plt.offset | |
13799 | + plt->output_offset | |
13800 | + plt->output_section->vma); | |
13801 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13802 | { | |
13803 | if (htab->opd_abi) | |
13804 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13805 | else | |
13806 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13807 | } | |
13808 | else | |
13809 | { | |
13810 | if (htab->opd_abi) | |
13811 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13812 | else | |
13813 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13814 | } | |
13815 | rela.r_addend = val; | |
13816 | loc = relplt->contents + (relplt->reloc_count++ | |
13817 | * sizeof (Elf64_External_Rela)); | |
13818 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13819 | } | |
49c09209 AM |
13820 | } |
13821 | ||
13822 | if (local_syms != NULL | |
13823 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13824 | { | |
13825 | if (!info->keep_memory) | |
13826 | free (local_syms); | |
13827 | else | |
13828 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13829 | } | |
13830 | } | |
13831 | return TRUE; | |
13832 | } | |
13833 | ||
721956f4 AM |
13834 | /* Build all the stubs associated with the current output file. |
13835 | The stubs are kept in a hash table attached to the main linker | |
13836 | hash table. This function is called via gldelf64ppc_finish. */ | |
13837 | ||
b34976b6 | 13838 | bfd_boolean |
e7d1c40c | 13839 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13840 | char **stats) |
5d1634d7 AM |
13841 | { |
13842 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13843 | struct map_stub *group; |
721956f4 | 13844 | asection *stub_sec; |
5d1634d7 | 13845 | bfd_byte *p; |
e717da7e | 13846 | int stub_sec_count = 0; |
5d1634d7 | 13847 | |
4dfe6ac6 NC |
13848 | if (htab == NULL) |
13849 | return FALSE; | |
13850 | ||
eea6121a | 13851 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 13852 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13853 | { |
13854 | group->eh_size = 0; | |
13855 | group->lr_restore = 0; | |
13856 | if ((stub_sec = group->stub_sec) != NULL | |
13857 | && stub_sec->size != 0) | |
13858 | { | |
13859 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
13860 | stub_sec->size); | |
13861 | if (stub_sec->contents == NULL) | |
13862 | return FALSE; | |
13863 | stub_sec->size = 0; | |
13864 | } | |
13865 | } | |
5d1634d7 | 13866 | |
23eb7e01 | 13867 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13868 | { |
9f951329 | 13869 | unsigned int indx; |
ad8e1ba5 | 13870 | bfd_vma plt0; |
9f951329 | 13871 | |
721956f4 | 13872 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13873 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13874 | { |
13875 | struct elf_link_hash_entry *h; | |
468392fb AM |
13876 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13877 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13878 | if (h == NULL) |
13879 | return FALSE; | |
13880 | if (h->root.type == bfd_link_hash_new) | |
13881 | { | |
13882 | h->root.type = bfd_link_hash_defined; | |
13883 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13884 | h->root.u.def.value = 8; |
f5385ebf AM |
13885 | h->ref_regular = 1; |
13886 | h->def_regular = 1; | |
13887 | h->ref_regular_nonweak = 1; | |
13888 | h->forced_local = 1; | |
13889 | h->non_elf = 0; | |
2ec55de3 | 13890 | h->root.linker_def = 1; |
97b639ba AM |
13891 | } |
13892 | } | |
33e44f2e AM |
13893 | plt0 = (htab->elf.splt->output_section->vma |
13894 | + htab->elf.splt->output_offset | |
13895 | - 16); | |
176a0d42 AM |
13896 | if (info->emitrelocations) |
13897 | { | |
13898 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13899 | if (r == NULL) | |
13900 | return FALSE; | |
13901 | r->r_offset = (htab->glink->output_offset | |
13902 | + htab->glink->output_section->vma); | |
13903 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13904 | r->r_addend = plt0; | |
13905 | } | |
4ce794b7 | 13906 | p = htab->glink->contents; |
176a0d42 | 13907 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13908 | bfd_put_64 (htab->glink->owner, plt0, p); |
13909 | p += 8; | |
b9e5796b AM |
13910 | if (htab->opd_abi) |
13911 | { | |
13912 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13913 | p += 4; | |
13914 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13915 | p += 4; | |
13916 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13917 | p += 4; | |
13918 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13919 | p += 4; | |
13920 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13921 | p += 4; | |
13922 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13923 | p += 4; | |
13924 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13925 | p += 4; | |
13926 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13927 | p += 4; | |
13928 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13929 | p += 4; | |
13930 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13931 | p += 4; | |
13932 | } | |
13933 | else | |
13934 | { | |
13935 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13936 | p += 4; | |
13937 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13938 | p += 4; | |
13939 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13940 | p += 4; | |
f378ab09 AM |
13941 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13942 | p += 4; | |
b9e5796b AM |
13943 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13944 | p += 4; | |
13945 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13946 | p += 4; | |
13947 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13948 | p += 4; | |
13949 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13950 | p += 4; | |
13951 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13952 | p += 4; | |
13953 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13954 | p += 4; | |
13955 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13956 | p += 4; | |
13957 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13958 | p += 4; | |
13959 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13960 | p += 4; | |
13961 | } | |
407aa07c AM |
13962 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13963 | p += 4; | |
c75bc4f7 | 13964 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13965 | |
9f951329 AM |
13966 | /* Build the .glink lazy link call stubs. */ |
13967 | indx = 0; | |
9e390558 | 13968 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13969 | { |
b9e5796b | 13970 | if (htab->opd_abi) |
9f951329 | 13971 | { |
b9e5796b AM |
13972 | if (indx < 0x8000) |
13973 | { | |
13974 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13975 | p += 4; | |
13976 | } | |
13977 | else | |
13978 | { | |
13979 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13980 | p += 4; | |
13981 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13982 | p); | |
13983 | p += 4; | |
13984 | } | |
9f951329 | 13985 | } |
4ce794b7 | 13986 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13987 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13988 | indx++; |
9f951329 AM |
13989 | p += 4; |
13990 | } | |
5d1634d7 | 13991 | } |
5d1634d7 | 13992 | |
49c09209 AM |
13993 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13994 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13995 | ||
13996 | if (!write_plt_relocs_for_local_syms (info)) | |
13997 | return FALSE; | |
9e390558 | 13998 | |
7341d5e2 | 13999 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14000 | { |
4ce794b7 | 14001 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14002 | htab->brlt->size); |
4ce794b7 | 14003 | if (htab->brlt->contents == NULL) |
b34976b6 | 14004 | return FALSE; |
721956f4 | 14005 | } |
ee75fd95 | 14006 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14007 | { |
14008 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14009 | htab->relbrlt->size); |
63bc6f6c AM |
14010 | if (htab->relbrlt->contents == NULL) |
14011 | return FALSE; | |
14012 | } | |
5d1634d7 | 14013 | |
721956f4 AM |
14014 | /* Build the stubs as directed by the stub hash table. */ |
14015 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14016 | |
a4b6fadd AM |
14017 | for (group = htab->group; group != NULL; group = group->next) |
14018 | if (group->needs_save_res) | |
7dda8d3c | 14019 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14020 | |
aa8a7074 AM |
14021 | if (htab->relbrlt != NULL) |
14022 | htab->relbrlt->reloc_count = 0; | |
14023 | ||
e7d1c40c | 14024 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14025 | for (group = htab->group; group != NULL; group = group->next) |
14026 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14027 | { |
14028 | int align = abs (htab->params->plt_stub_align); | |
14029 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14030 | } | |
794e51c0 | 14031 | |
7dda8d3c AM |
14032 | for (group = htab->group; group != NULL; group = group->next) |
14033 | if (group->needs_save_res) | |
14034 | { | |
14035 | stub_sec = group->stub_sec; | |
14036 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14037 | htab->sfpr->contents, htab->sfpr->size); | |
14038 | if (htab->params->emit_stub_syms) | |
14039 | { | |
14040 | unsigned int i; | |
14041 | ||
14042 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14043 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
14044 | return FALSE; | |
14045 | } | |
14046 | } | |
14047 | ||
df136d64 AM |
14048 | if (htab->glink_eh_frame != NULL |
14049 | && htab->glink_eh_frame->size != 0) | |
14050 | { | |
14051 | bfd_vma val; | |
14052 | size_t align = 4; | |
14053 | ||
14054 | p = htab->glink_eh_frame->contents; | |
14055 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14056 | ||
14057 | for (group = htab->group; group != NULL; group = group->next) | |
14058 | if (group->eh_size != 0) | |
14059 | { | |
14060 | /* Offset to stub section. */ | |
14061 | val = (group->stub_sec->output_section->vma | |
14062 | + group->stub_sec->output_offset); | |
14063 | val -= (htab->glink_eh_frame->output_section->vma | |
14064 | + htab->glink_eh_frame->output_offset | |
14065 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14066 | if (val + 0x80000000 > 0xffffffff) | |
14067 | { | |
14068 | _bfd_error_handler | |
14069 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14070 | group->stub_sec->name); | |
14071 | return FALSE; | |
14072 | } | |
14073 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14074 | p += (group->eh_size + 17 + 3) & -4; | |
14075 | } | |
14076 | if (htab->glink != NULL && htab->glink->size != 0) | |
14077 | { | |
14078 | /* Offset to .glink. */ | |
14079 | val = (htab->glink->output_section->vma | |
14080 | + htab->glink->output_offset | |
14081 | + 8); | |
14082 | val -= (htab->glink_eh_frame->output_section->vma | |
14083 | + htab->glink_eh_frame->output_offset | |
14084 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14085 | if (val + 0x80000000 > 0xffffffff) | |
14086 | { | |
14087 | _bfd_error_handler | |
14088 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14089 | htab->glink->name); | |
14090 | return FALSE; | |
14091 | } | |
14092 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14093 | p += (24 + align - 1) & -align; | |
14094 | } | |
14095 | } | |
14096 | ||
d4aaa2a0 AM |
14097 | for (group = htab->group; group != NULL; group = group->next) |
14098 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14099 | { |
14100 | stub_sec_count += 1; | |
c9301e31 AM |
14101 | if (stub_sec->rawsize != stub_sec->size |
14102 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14103 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14104 | break; |
14105 | } | |
5d1634d7 | 14106 | |
25516cc5 | 14107 | if (group != NULL) |
5d1634d7 | 14108 | { |
b34976b6 | 14109 | htab->stub_error = TRUE; |
cf97bcb0 | 14110 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14111 | } |
721956f4 | 14112 | |
d2a300cf AM |
14113 | if (htab->stub_error) |
14114 | return FALSE; | |
14115 | ||
14116 | if (stats != NULL) | |
14117 | { | |
db84fff3 | 14118 | size_t len; |
d2a300cf AM |
14119 | *stats = bfd_malloc (500); |
14120 | if (*stats == NULL) | |
14121 | return FALSE; | |
14122 | ||
db84fff3 AM |
14123 | len = sprintf (*stats, |
14124 | ngettext ("linker stubs in %u group\n", | |
14125 | "linker stubs in %u groups\n", | |
14126 | stub_sec_count), | |
14127 | stub_sec_count); | |
05d0e962 AM |
14128 | sprintf (*stats + len, _(" branch %lu\n" |
14129 | " branch toc adj %lu\n" | |
14130 | " branch notoc %lu\n" | |
14131 | " branch both %lu\n" | |
14132 | " long branch %lu\n" | |
14133 | " long toc adj %lu\n" | |
14134 | " long notoc %lu\n" | |
14135 | " long both %lu\n" | |
14136 | " plt call %lu\n" | |
14137 | " plt call save %lu\n" | |
14138 | " plt call notoc %lu\n" | |
14139 | " plt call both %lu\n" | |
14140 | " global entry %lu"), | |
4ce794b7 AM |
14141 | htab->stub_count[ppc_stub_long_branch - 1], |
14142 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
05d0e962 AM |
14143 | htab->stub_count[ppc_stub_long_branch_notoc - 1], |
14144 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
4ce794b7 AM |
14145 | htab->stub_count[ppc_stub_plt_branch - 1], |
14146 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
05d0e962 AM |
14147 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], |
14148 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
794e51c0 | 14149 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 | 14150 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
05d0e962 AM |
14151 | htab->stub_count[ppc_stub_plt_call_notoc - 1], |
14152 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
7341d5e2 | 14153 | htab->stub_count[ppc_stub_global_entry - 1]); |
d2a300cf AM |
14154 | } |
14155 | return TRUE; | |
5bd4f169 AM |
14156 | } |
14157 | ||
60124e18 AM |
14158 | /* What to do when ld finds relocations against symbols defined in |
14159 | discarded sections. */ | |
14160 | ||
14161 | static unsigned int | |
14162 | ppc64_elf_action_discarded (asection *sec) | |
14163 | { | |
14164 | if (strcmp (".opd", sec->name) == 0) | |
14165 | return 0; | |
14166 | ||
14167 | if (strcmp (".toc", sec->name) == 0) | |
14168 | return 0; | |
14169 | ||
bce50a28 JJ |
14170 | if (strcmp (".toc1", sec->name) == 0) |
14171 | return 0; | |
14172 | ||
60124e18 AM |
14173 | return _bfd_elf_default_action_discarded (sec); |
14174 | } | |
14175 | ||
e59a1001 AM |
14176 | /* These are the dynamic relocations supported by glibc. */ |
14177 | ||
14178 | static bfd_boolean | |
14179 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) | |
14180 | { | |
14181 | switch (r_type) | |
14182 | { | |
14183 | case R_PPC64_RELATIVE: | |
14184 | case R_PPC64_NONE: | |
14185 | case R_PPC64_ADDR64: | |
14186 | case R_PPC64_GLOB_DAT: | |
14187 | case R_PPC64_IRELATIVE: | |
14188 | case R_PPC64_JMP_IREL: | |
14189 | case R_PPC64_JMP_SLOT: | |
14190 | case R_PPC64_DTPMOD64: | |
14191 | case R_PPC64_DTPREL64: | |
14192 | case R_PPC64_TPREL64: | |
14193 | case R_PPC64_TPREL16_LO_DS: | |
14194 | case R_PPC64_TPREL16_DS: | |
14195 | case R_PPC64_TPREL16: | |
14196 | case R_PPC64_TPREL16_LO: | |
14197 | case R_PPC64_TPREL16_HI: | |
14198 | case R_PPC64_TPREL16_HIGH: | |
14199 | case R_PPC64_TPREL16_HA: | |
14200 | case R_PPC64_TPREL16_HIGHA: | |
14201 | case R_PPC64_TPREL16_HIGHER: | |
14202 | case R_PPC64_TPREL16_HIGHEST: | |
14203 | case R_PPC64_TPREL16_HIGHERA: | |
14204 | case R_PPC64_TPREL16_HIGHESTA: | |
14205 | case R_PPC64_ADDR16_LO_DS: | |
14206 | case R_PPC64_ADDR16_LO: | |
14207 | case R_PPC64_ADDR16_HI: | |
14208 | case R_PPC64_ADDR16_HIGH: | |
14209 | case R_PPC64_ADDR16_HA: | |
14210 | case R_PPC64_ADDR16_HIGHA: | |
14211 | case R_PPC64_REL30: | |
14212 | case R_PPC64_COPY: | |
14213 | case R_PPC64_UADDR64: | |
14214 | case R_PPC64_UADDR32: | |
14215 | case R_PPC64_ADDR32: | |
14216 | case R_PPC64_ADDR24: | |
14217 | case R_PPC64_ADDR16: | |
14218 | case R_PPC64_UADDR16: | |
14219 | case R_PPC64_ADDR16_DS: | |
14220 | case R_PPC64_ADDR16_HIGHER: | |
14221 | case R_PPC64_ADDR16_HIGHEST: | |
14222 | case R_PPC64_ADDR16_HIGHERA: | |
14223 | case R_PPC64_ADDR16_HIGHESTA: | |
14224 | case R_PPC64_ADDR14: | |
14225 | case R_PPC64_ADDR14_BRTAKEN: | |
14226 | case R_PPC64_ADDR14_BRNTAKEN: | |
14227 | case R_PPC64_REL32: | |
14228 | case R_PPC64_REL64: | |
14229 | return TRUE; | |
14230 | ||
14231 | default: | |
14232 | return FALSE; | |
14233 | } | |
14234 | } | |
14235 | ||
5bd4f169 AM |
14236 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14237 | to handle the relocations for a section. | |
14238 | ||
14239 | The relocs are always passed as Rela structures; if the section | |
14240 | actually uses Rel structures, the r_addend field will always be | |
14241 | zero. | |
14242 | ||
14243 | This function is responsible for adjust the section contents as | |
14244 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14245 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14246 | necessary. |
14247 | ||
14248 | This function does not have to worry about setting the reloc | |
14249 | address or the reloc symbol index. | |
14250 | ||
14251 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14252 | ||
14253 | LOCAL_SECTIONS is an array giving the section in the input file | |
14254 | corresponding to the st_shndx field of each local symbol. | |
14255 | ||
14256 | The global hash table entry for the global symbols can be found | |
14257 | via elf_sym_hashes (input_bfd). | |
14258 | ||
1049f94e | 14259 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14260 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14261 | going to be the section symbol corresponding to the output | |
14262 | section, which means that the addend must be adjusted | |
14263 | accordingly. */ | |
14264 | ||
b34976b6 | 14265 | static bfd_boolean |
4ce794b7 AM |
14266 | ppc64_elf_relocate_section (bfd *output_bfd, |
14267 | struct bfd_link_info *info, | |
14268 | bfd *input_bfd, | |
14269 | asection *input_section, | |
14270 | bfd_byte *contents, | |
14271 | Elf_Internal_Rela *relocs, | |
14272 | Elf_Internal_Sym *local_syms, | |
14273 | asection **local_sections) | |
5bd4f169 | 14274 | { |
65f38f15 | 14275 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14276 | Elf_Internal_Shdr *symtab_hdr; |
14277 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14278 | Elf_Internal_Rela *rel; |
c316a17c | 14279 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14280 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14281 | Elf_Internal_Rela outrel; |
14282 | bfd_byte *loc; | |
411e1bfb | 14283 | struct got_entry **local_got_ents; |
5bd4f169 | 14284 | bfd_vma TOCstart; |
b34976b6 AM |
14285 | bfd_boolean ret = TRUE; |
14286 | bfd_boolean is_opd; | |
794e51c0 AM |
14287 | /* Assume 'at' branch hints. */ |
14288 | bfd_boolean is_isa_v2 = TRUE; | |
e59a1001 | 14289 | bfd_boolean warned_dynamic = FALSE; |
95f0d0d2 | 14290 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14291 | |
65f38f15 | 14292 | /* Initialize howto table if needed. */ |
5bd4f169 | 14293 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14294 | ppc_howto_init (); |
14295 | ||
65f38f15 | 14296 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14297 | if (htab == NULL) |
14298 | return FALSE; | |
ee75fd95 AM |
14299 | |
14300 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14301 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14302 | return TRUE; |
14303 | ||
7af5d5c4 AM |
14304 | if (!is_ppc64_elf (input_bfd)) |
14305 | { | |
14306 | bfd_set_error (bfd_error_wrong_format); | |
14307 | return FALSE; | |
14308 | } | |
0ffa91dd | 14309 | |
411e1bfb | 14310 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14311 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14312 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14313 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14314 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14315 | |
c316a17c | 14316 | rel = wrel = relocs; |
5bd4f169 | 14317 | relend = relocs + input_section->reloc_count; |
c316a17c | 14318 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14319 | { |
04c9666a | 14320 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14321 | bfd_vma addend; |
5bd4f169 AM |
14322 | bfd_reloc_status_type r; |
14323 | Elf_Internal_Sym *sym; | |
14324 | asection *sec; | |
039b3fef AM |
14325 | struct elf_link_hash_entry *h_elf; |
14326 | struct ppc_link_hash_entry *h; | |
14327 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14328 | const char *sym_name; |
0d4792f7 | 14329 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14330 | bfd_vma toc_addend; |
f961d9dd AM |
14331 | unsigned char tls_mask, tls_gd, tls_type; |
14332 | unsigned char sym_type; | |
5bd4f169 | 14333 | bfd_vma relocation; |
23cedd1d | 14334 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14335 | bfd_boolean warned; |
bc30df16 | 14336 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14337 | unsigned int insn; |
e11840f9 | 14338 | unsigned int mask; |
721956f4 AM |
14339 | struct ppc_stub_hash_entry *stub_entry; |
14340 | bfd_vma max_br_offset; | |
14341 | bfd_vma from; | |
c316a17c | 14342 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14343 | reloc_howto_type *howto; |
14344 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14345 | uint64_t pinsn; |
14346 | bfd_vma offset; | |
5bd4f169 | 14347 | |
c316a17c AM |
14348 | again: |
14349 | orig_rel = *rel; | |
14350 | ||
4ce794b7 | 14351 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14352 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14353 | |
14354 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14355 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14356 | proper TOC base to use. */ | |
14357 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14358 | && wrel != relocs |
14359 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14360 | && is_opd) |
c316a17c | 14361 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14362 | |
4ce794b7 AM |
14363 | sym = NULL; |
14364 | sec = NULL; | |
039b3fef | 14365 | h_elf = NULL; |
4ce794b7 | 14366 | sym_name = NULL; |
b34976b6 AM |
14367 | unresolved_reloc = FALSE; |
14368 | warned = FALSE; | |
65f38f15 | 14369 | |
0b13192e | 14370 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14371 | { |
14372 | /* It's a local symbol. */ | |
74f0fb50 | 14373 | struct _opd_sec_data *opd; |
4025353c | 14374 | |
5bd4f169 AM |
14375 | sym = local_syms + r_symndx; |
14376 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14377 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14378 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14379 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14380 | opd = get_opd_info (sec); |
14381 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14382 | { |
51aecdc5 AM |
14383 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14384 | + rel->r_addend)]; | |
4025353c AM |
14385 | if (adjust == -1) |
14386 | relocation = 0; | |
14387 | else | |
4cc603a5 AM |
14388 | { |
14389 | /* If this is a relocation against the opd section sym | |
14390 | and we have edited .opd, adjust the reloc addend so | |
14391 | that ld -r and ld --emit-relocs output is correct. | |
14392 | If it is a reloc against some other .opd symbol, | |
14393 | then the symbol value will be adjusted later. */ | |
14394 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14395 | rel->r_addend += adjust; | |
14396 | else | |
14397 | relocation += adjust; | |
14398 | } | |
1e2f5b6e | 14399 | } |
5bd4f169 AM |
14400 | } |
14401 | else | |
14402 | { | |
62d887d4 L |
14403 | bfd_boolean ignored; |
14404 | ||
b2a8e766 AM |
14405 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14406 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14407 | h_elf, sec, relocation, |
62d887d4 | 14408 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14409 | sym_name = h_elf->root.root.string; |
14410 | sym_type = h_elf->type; | |
b69fdb4e AM |
14411 | if (sec != NULL |
14412 | && sec->owner == output_bfd | |
14413 | && strcmp (sec->name, ".opd") == 0) | |
14414 | { | |
14415 | /* This is a symbol defined in a linker script. All | |
14416 | such are defined in output sections, even those | |
14417 | defined by simple assignment from a symbol defined in | |
14418 | an input section. Transfer the symbol to an | |
14419 | appropriate input .opd section, so that a branch to | |
14420 | this symbol will be mapped to the location specified | |
14421 | by the opd entry. */ | |
14422 | struct bfd_link_order *lo; | |
14423 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14424 | if (lo->type == bfd_indirect_link_order) | |
14425 | { | |
14426 | asection *isec = lo->u.indirect.section; | |
14427 | if (h_elf->root.u.def.value >= isec->output_offset | |
14428 | && h_elf->root.u.def.value < (isec->output_offset | |
14429 | + isec->size)) | |
14430 | { | |
14431 | h_elf->root.u.def.value -= isec->output_offset; | |
14432 | h_elf->root.u.def.section = isec; | |
14433 | sec = isec; | |
14434 | break; | |
14435 | } | |
14436 | } | |
14437 | } | |
5bd4f169 | 14438 | } |
039b3fef | 14439 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 14440 | |
dbaa2011 | 14441 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14442 | { |
14443 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14444 | input_bfd, input_section, | |
0930cb30 | 14445 | contents, rel->r_offset); |
c316a17c AM |
14446 | wrel->r_offset = rel->r_offset; |
14447 | wrel->r_info = 0; | |
14448 | wrel->r_addend = 0; | |
14449 | ||
14450 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14451 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14452 | non-debug to preserve relocs in .eh_frame which the |
14453 | eh_frame editing code expects to be present. */ | |
14454 | if (bfd_link_relocatable (info) | |
14455 | && (input_section->flags & SEC_DEBUGGING)) | |
14456 | wrel--; | |
14457 | ||
14458 | continue; | |
14459 | } | |
ab96bf03 | 14460 | |
0e1862bb | 14461 | if (bfd_link_relocatable (info)) |
c316a17c | 14462 | goto copy_reloc; |
ab96bf03 | 14463 | |
f40da81b AM |
14464 | if (h != NULL && &h->elf == htab->elf.hgot) |
14465 | { | |
6f20ed8a | 14466 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14467 | sec = bfd_abs_section_ptr; |
14468 | unresolved_reloc = FALSE; | |
14469 | } | |
14470 | ||
951fd09b AM |
14471 | /* TLS optimizations. Replace instruction sequences and relocs |
14472 | based on information we collected in tls_optimize. We edit | |
14473 | RELOCS so that --emit-relocs will output something sensible | |
14474 | for the final instruction stream. */ | |
14475 | tls_mask = 0; | |
14476 | tls_gd = 0; | |
0d4792f7 | 14477 | toc_symndx = 0; |
727fc41e AM |
14478 | if (h != NULL) |
14479 | tls_mask = h->tls_mask; | |
14480 | else if (local_got_ents != NULL) | |
411e1bfb | 14481 | { |
e054468f AM |
14482 | struct plt_entry **local_plt = (struct plt_entry **) |
14483 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14484 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14485 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14486 | tls_mask = lgot_masks[r_symndx]; |
14487 | } | |
37da22e5 | 14488 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14489 | && (r_type == R_PPC64_TLS |
14490 | || r_type == R_PPC64_TLSGD | |
14491 | || r_type == R_PPC64_TLSLD)) | |
14492 | { | |
14493 | /* Check for toc tls entries. */ | |
f961d9dd | 14494 | unsigned char *toc_tls; |
0d4792f7 | 14495 | |
727fc41e AM |
14496 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14497 | &local_syms, rel, input_bfd)) | |
14498 | return FALSE; | |
0d4792f7 | 14499 | |
727fc41e AM |
14500 | if (toc_tls) |
14501 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14502 | } |
14503 | ||
14504 | /* Check that tls relocs are used with tls syms, and non-tls | |
14505 | relocs are used with non-tls syms. */ | |
cf35638d | 14506 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14507 | && r_type != R_PPC64_NONE |
14508 | && (h == NULL | |
039b3fef AM |
14509 | || h->elf.root.type == bfd_link_hash_defined |
14510 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 14511 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 14512 | { |
37da22e5 | 14513 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14514 | && (r_type == R_PPC64_TLS |
14515 | || r_type == R_PPC64_TLSGD | |
14516 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14517 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14518 | ; | |
14519 | else | |
25f53a85 | 14520 | info->callbacks->einfo |
1d483afe | 14521 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14522 | /* xgettext:c-format */ |
c1c8c1ef | 14523 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14524 | /* xgettext:c-format */ |
c1c8c1ef | 14525 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14526 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14527 | ppc64_elf_howto_table[r_type]->name, |
14528 | sym_name); | |
411e1bfb AM |
14529 | } |
14530 | ||
14531 | /* Ensure reloc mapping code below stays sane. */ | |
14532 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14533 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14534 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14535 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14536 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14537 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14538 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14539 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14540 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14541 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14542 | abort (); | |
0d4792f7 | 14543 | |
411e1bfb AM |
14544 | switch (r_type) |
14545 | { | |
14546 | default: | |
411e1bfb AM |
14547 | break; |
14548 | ||
ba761f19 | 14549 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14550 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
2365f8d7 | 14551 | if ((insn & (0x3fu << 26)) != 58u << 26) |
ba761f19 AM |
14552 | abort (); |
14553 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14554 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14555 | r_type = R_PPC64_TOC16_LO; |
14556 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14557 | break; | |
14558 | ||
411e1bfb AM |
14559 | case R_PPC64_TOC16: |
14560 | case R_PPC64_TOC16_LO: | |
14561 | case R_PPC64_TOC16_DS: | |
14562 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14563 | { |
14564 | /* Check for toc tls entries. */ | |
f961d9dd | 14565 | unsigned char *toc_tls; |
951fd09b | 14566 | int retval; |
411e1bfb | 14567 | |
3a71aa26 AM |
14568 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14569 | &local_syms, rel, input_bfd); | |
951fd09b | 14570 | if (retval == 0) |
411e1bfb AM |
14571 | return FALSE; |
14572 | ||
14573 | if (toc_tls) | |
14574 | { | |
951fd09b | 14575 | tls_mask = *toc_tls; |
411e1bfb AM |
14576 | if (r_type == R_PPC64_TOC16_DS |
14577 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14578 | { |
37da22e5 | 14579 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14580 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14581 | goto toctprel; | |
14582 | } | |
411e1bfb | 14583 | else |
951fd09b AM |
14584 | { |
14585 | /* If we found a GD reloc pair, then we might be | |
14586 | doing a GD->IE transition. */ | |
14587 | if (retval == 2) | |
14588 | { | |
b00a0a86 | 14589 | tls_gd = TLS_GDIE; |
37da22e5 AM |
14590 | if ((tls_mask & TLS_TLS) != 0 |
14591 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14592 | goto tls_ldgd_opt; |
951fd09b AM |
14593 | } |
14594 | else if (retval == 3) | |
14595 | { | |
37da22e5 AM |
14596 | if ((tls_mask & TLS_TLS) != 0 |
14597 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14598 | goto tls_ldgd_opt; |
951fd09b AM |
14599 | } |
14600 | } | |
411e1bfb AM |
14601 | } |
14602 | } | |
14603 | break; | |
14604 | ||
9d6ded02 AM |
14605 | case R_PPC64_GOT_TPREL16_HI: |
14606 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14607 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14608 | && (tls_mask & TLS_TPREL) == 0) |
14609 | { | |
14610 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14611 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14612 | r_type = R_PPC64_NONE; |
14613 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14614 | } | |
14615 | break; | |
14616 | ||
411e1bfb AM |
14617 | case R_PPC64_GOT_TPREL16_DS: |
14618 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14619 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14620 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14621 | { |
81407a69 | 14622 | toctprel: |
95f0d0d2 | 14623 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14624 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14625 | insn &= 31 << 21; |
14626 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14627 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14628 | contents + rel->r_offset - d_offset); |
411e1bfb | 14629 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14630 | if (toc_symndx != 0) |
14631 | { | |
14632 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14633 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14634 | /* We changed the symbol. Start over in order to |
14635 | get h, sym, sec etc. right. */ | |
c316a17c | 14636 | goto again; |
0d4792f7 AM |
14637 | } |
14638 | else | |
14639 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14640 | } |
14641 | break; | |
14642 | ||
c213164a AM |
14643 | case R_PPC64_GOT_TPREL34: |
14644 | if ((tls_mask & TLS_TLS) != 0 | |
14645 | && (tls_mask & TLS_TPREL) == 0) | |
14646 | { | |
14647 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
14648 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14649 | pinsn <<= 32; | |
14650 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14651 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
14652 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
14653 | bfd_put_32 (input_bfd, pinsn >> 32, | |
14654 | contents + rel->r_offset); | |
14655 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
14656 | contents + rel->r_offset + 4); | |
14657 | r_type = R_PPC64_TPREL34; | |
14658 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14659 | } | |
14660 | break; | |
14661 | ||
411e1bfb | 14662 | case R_PPC64_TLS: |
37da22e5 | 14663 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14664 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14665 | { |
c213164a | 14666 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
14667 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14668 | if (insn == 0) | |
c213164a AM |
14669 | break; |
14670 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 14671 | { |
c213164a AM |
14672 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
14673 | /* Was PPC64_TLS which sits on insn boundary, now | |
14674 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
14675 | rel->r_offset += d_offset; | |
14676 | r_type = R_PPC64_TPREL16_LO; | |
14677 | if (toc_symndx != 0) | |
14678 | { | |
14679 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
14680 | rel->r_addend = toc_addend; | |
14681 | /* We changed the symbol. Start over in order to | |
14682 | get h, sym, sec etc. right. */ | |
14683 | goto again; | |
14684 | } | |
14685 | else | |
14686 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14687 | } | |
14688 | else if ((rel->r_offset & 3) == 1) | |
14689 | { | |
14690 | /* For pcrel IE to LE we already have the full | |
14691 | offset and thus don't need an addi here. A nop | |
14692 | or mr will do. */ | |
2365f8d7 | 14693 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
14694 | { |
14695 | /* Extract regs from addi rt,ra,si. */ | |
14696 | unsigned int rt = (insn >> 21) & 0x1f; | |
14697 | unsigned int ra = (insn >> 16) & 0x1f; | |
14698 | if (rt == ra) | |
14699 | insn = NOP; | |
14700 | else | |
14701 | { | |
14702 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
14703 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
14704 | insn |= (31u << 26) | (444u << 1); | |
14705 | } | |
14706 | } | |
14707 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 14708 | } |
411e1bfb AM |
14709 | } |
14710 | break; | |
14711 | ||
411e1bfb AM |
14712 | case R_PPC64_GOT_TLSGD16_HI: |
14713 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 14714 | tls_gd = TLS_GDIE; |
37da22e5 | 14715 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14716 | goto tls_gdld_hi; |
14717 | break; | |
14718 | ||
411e1bfb AM |
14719 | case R_PPC64_GOT_TLSLD16_HI: |
14720 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14721 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14722 | { |
951fd09b AM |
14723 | tls_gdld_hi: |
14724 | if ((tls_mask & tls_gd) != 0) | |
14725 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14726 | + R_PPC64_GOT_TPREL16_DS); | |
14727 | else | |
411e1bfb | 14728 | { |
4fe5ca5b | 14729 | rel->r_offset -= d_offset; |
95f0d0d2 | 14730 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14731 | r_type = R_PPC64_NONE; |
411e1bfb | 14732 | } |
951fd09b | 14733 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14734 | } |
14735 | break; | |
14736 | ||
951fd09b AM |
14737 | case R_PPC64_GOT_TLSGD16: |
14738 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 14739 | tls_gd = TLS_GDIE; |
37da22e5 | 14740 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14741 | goto tls_ldgd_opt; |
951fd09b | 14742 | break; |
411e1bfb | 14743 | |
951fd09b AM |
14744 | case R_PPC64_GOT_TLSLD16: |
14745 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14746 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14747 | { |
b9f04fe0 | 14748 | unsigned int insn1, insn2; |
102890f0 AM |
14749 | |
14750 | tls_ldgd_opt: | |
727fc41e AM |
14751 | offset = (bfd_vma) -1; |
14752 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14753 | __tls_get_addr calls, we must trust that the call | |
14754 | stays with its arg setup insns, ie. that the next | |
14755 | reloc is the __tls_get_addr call associated with | |
14756 | the current reloc. Edit both insns. */ | |
9737e8af | 14757 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
14758 | && rel + 1 < relend |
14759 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14760 | htab->tls_get_addr, | |
14761 | htab->tls_get_addr_fd)) | |
14762 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14763 | /* We read the low GOT_TLS (or TOC16) insn because we |
14764 | need to keep the destination reg. It may be | |
14765 | something other than the usual r3, and moved to r3 | |
14766 | before the call by intervening code. */ | |
95f0d0d2 | 14767 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14768 | contents + rel->r_offset - d_offset); |
102890f0 | 14769 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14770 | { |
102890f0 | 14771 | /* IE */ |
b86ac8e3 | 14772 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 14773 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 14774 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 14775 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14776 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
14777 | if (r_type == R_PPC64_TOC16 |
14778 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 14779 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
14780 | else |
14781 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
14782 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
14783 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
14784 | } | |
14785 | else | |
14786 | { | |
14787 | /* LE */ | |
b86ac8e3 AM |
14788 | insn1 &= 0x1f << 21; |
14789 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14790 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14791 | if (tls_gd == 0) | |
951fd09b | 14792 | { |
102890f0 | 14793 | /* Was an LD reloc. */ |
71c4e95a | 14794 | r_symndx = STN_UNDEF; |
102890f0 | 14795 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 14796 | } |
102890f0 | 14797 | else if (toc_symndx != 0) |
3a71aa26 AM |
14798 | { |
14799 | r_symndx = toc_symndx; | |
14800 | rel->r_addend = toc_addend; | |
14801 | } | |
102890f0 AM |
14802 | r_type = R_PPC64_TPREL16_HA; |
14803 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14804 | if (offset != (bfd_vma) -1) |
14805 | { | |
14806 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14807 | R_PPC64_TPREL16_LO); | |
14808 | rel[1].r_offset = offset + d_offset; | |
14809 | rel[1].r_addend = rel->r_addend; | |
14810 | } | |
102890f0 | 14811 | } |
95f0d0d2 | 14812 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 14813 | contents + rel->r_offset - d_offset); |
727fc41e | 14814 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
14815 | { |
14816 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
14817 | if (offset + 8 <= input_section->size) | |
14818 | { | |
14819 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
14820 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
14821 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
14822 | } | |
14823 | } | |
727fc41e AM |
14824 | if ((tls_mask & tls_gd) == 0 |
14825 | && (tls_gd == 0 || toc_symndx != 0)) | |
14826 | { | |
14827 | /* We changed the symbol. Start over in order | |
14828 | to get h, sym, sec etc. right. */ | |
c316a17c | 14829 | goto again; |
727fc41e AM |
14830 | } |
14831 | } | |
14832 | break; | |
14833 | ||
c213164a AM |
14834 | case R_PPC64_GOT_TLSGD34: |
14835 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) | |
14836 | { | |
14837 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14838 | pinsn <<= 32; | |
14839 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14840 | if ((tls_mask & TLS_GDIE) != 0) | |
14841 | { | |
14842 | /* IE, pla -> pld */ | |
14843 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
14844 | r_type = R_PPC64_GOT_TPREL34; | |
14845 | } | |
14846 | else | |
14847 | { | |
14848 | /* LE, pla pcrel -> paddi r13 */ | |
14849 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
14850 | r_type = R_PPC64_TPREL34; | |
14851 | } | |
14852 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14853 | bfd_put_32 (input_bfd, pinsn >> 32, | |
14854 | contents + rel->r_offset); | |
14855 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
14856 | contents + rel->r_offset + 4); | |
14857 | } | |
14858 | break; | |
14859 | ||
14860 | case R_PPC64_GOT_TLSLD34: | |
14861 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) | |
14862 | { | |
14863 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14864 | pinsn <<= 32; | |
14865 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14866 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
14867 | bfd_put_32 (input_bfd, pinsn >> 32, | |
14868 | contents + rel->r_offset); | |
14869 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
14870 | contents + rel->r_offset + 4); | |
14871 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
14872 | r_symndx = STN_UNDEF; | |
14873 | r_type = R_PPC64_TPREL34; | |
14874 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14875 | goto again; | |
14876 | } | |
14877 | break; | |
14878 | ||
727fc41e | 14879 | case R_PPC64_TLSGD: |
37da22e5 | 14880 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 14881 | && rel + 1 < relend) |
727fc41e | 14882 | { |
b9f04fe0 | 14883 | unsigned int insn2; |
5663e321 | 14884 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 14885 | |
4a421c53 | 14886 | offset = rel->r_offset; |
5663e321 | 14887 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
14888 | { |
14889 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
14890 | if (r_type1 == R_PPC64_PLT_PCREL34 |
14891 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
14892 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
14893 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
14894 | break; | |
14895 | } | |
14896 | ||
14897 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14898 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14899 | ||
b00a0a86 | 14900 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
14901 | { |
14902 | /* IE */ | |
14903 | r_type = R_PPC64_NONE; | |
14904 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
14905 | } | |
14906 | else | |
14907 | { | |
14908 | /* LE */ | |
14909 | if (toc_symndx != 0) | |
14910 | { | |
14911 | r_symndx = toc_symndx; | |
14912 | rel->r_addend = toc_addend; | |
14913 | } | |
c213164a AM |
14914 | if (r_type1 == R_PPC64_REL24_NOTOC |
14915 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
14916 | { | |
14917 | r_type = R_PPC64_NONE; | |
14918 | insn2 = NOP; | |
14919 | } | |
14920 | else | |
14921 | { | |
14922 | rel->r_offset = offset + d_offset; | |
14923 | r_type = R_PPC64_TPREL16_LO; | |
14924 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14925 | } | |
727fc41e AM |
14926 | } |
14927 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14928 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14929 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14930 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14931 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
14932 | if ((tls_mask & TLS_GDIE) == 0 |
14933 | && toc_symndx != 0 | |
14934 | && r_type != R_PPC64_NONE) | |
c316a17c | 14935 | goto again; |
411e1bfb | 14936 | } |
411e1bfb AM |
14937 | break; |
14938 | ||
727fc41e | 14939 | case R_PPC64_TLSLD: |
37da22e5 | 14940 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 14941 | && rel + 1 < relend) |
727fc41e | 14942 | { |
b9f04fe0 | 14943 | unsigned int insn2; |
5663e321 | 14944 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 14945 | |
4a421c53 | 14946 | offset = rel->r_offset; |
5663e321 | 14947 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
14948 | { |
14949 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
14950 | if (r_type1 == R_PPC64_PLT_PCREL34 |
14951 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
14952 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
14953 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
14954 | break; | |
14955 | } | |
14956 | ||
14957 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14958 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14959 | ||
c213164a AM |
14960 | if (r_type1 == R_PPC64_REL24_NOTOC |
14961 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
14962 | { | |
14963 | r_type = R_PPC64_NONE; | |
14964 | insn2 = NOP; | |
14965 | } | |
14966 | else | |
14967 | { | |
14968 | rel->r_offset = offset + d_offset; | |
14969 | r_symndx = STN_UNDEF; | |
14970 | r_type = R_PPC64_TPREL16_LO; | |
14971 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
14972 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14973 | } | |
727fc41e | 14974 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
14975 | /* Zap the reloc on the _tls_get_addr call too. */ |
14976 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14977 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14978 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
14979 | if (r_type != R_PPC64_NONE) |
14980 | goto again; | |
727fc41e AM |
14981 | } |
14982 | break; | |
14983 | ||
411e1bfb | 14984 | case R_PPC64_DTPMOD64: |
951fd09b AM |
14985 | if (rel + 1 < relend |
14986 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
14987 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 14988 | { |
951fd09b AM |
14989 | if ((tls_mask & TLS_GD) == 0) |
14990 | { | |
14991 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 14992 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
14993 | r_type = R_PPC64_TPREL64; |
14994 | else | |
14995 | { | |
4ce794b7 | 14996 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
14997 | r_type = R_PPC64_NONE; |
14998 | } | |
14999 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15000 | } | |
15001 | } | |
15002 | else | |
15003 | { | |
15004 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15005 | { |
4ce794b7 | 15006 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15007 | r_type = R_PPC64_NONE; |
951fd09b | 15008 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15009 | } |
411e1bfb AM |
15010 | } |
15011 | break; | |
15012 | ||
15013 | case R_PPC64_TPREL64: | |
951fd09b | 15014 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15015 | { |
15016 | r_type = R_PPC64_NONE; | |
15017 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15018 | } | |
15019 | break; | |
52a82034 | 15020 | |
006589cf AM |
15021 | case R_PPC64_ENTRY: |
15022 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15023 | if (!bfd_link_pic (info) | |
15024 | && !info->traditional_format | |
15025 | && relocation + 0x80008000 <= 0xffffffff) | |
15026 | { | |
15027 | unsigned int insn1, insn2; | |
15028 | ||
15029 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15030 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15031 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15032 | && insn2 == ADD_R2_R2_R12) | |
15033 | { | |
95f0d0d2 | 15034 | bfd_put_32 (input_bfd, |
006589cf AM |
15035 | LIS_R2 + PPC_HA (relocation), |
15036 | contents + rel->r_offset); | |
95f0d0d2 | 15037 | bfd_put_32 (input_bfd, |
006589cf AM |
15038 | ADDI_R2_R2 + PPC_LO (relocation), |
15039 | contents + rel->r_offset + 4); | |
15040 | } | |
15041 | } | |
15042 | else | |
15043 | { | |
15044 | relocation -= (rel->r_offset | |
15045 | + input_section->output_offset | |
15046 | + input_section->output_section->vma); | |
15047 | if (relocation + 0x80008000 <= 0xffffffff) | |
15048 | { | |
15049 | unsigned int insn1, insn2; | |
15050 | ||
15051 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15052 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15053 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15054 | && insn2 == ADD_R2_R2_R12) | |
15055 | { | |
95f0d0d2 | 15056 | bfd_put_32 (input_bfd, |
006589cf AM |
15057 | ADDIS_R2_R12 + PPC_HA (relocation), |
15058 | contents + rel->r_offset); | |
95f0d0d2 | 15059 | bfd_put_32 (input_bfd, |
006589cf AM |
15060 | ADDI_R2_R2 + PPC_LO (relocation), |
15061 | contents + rel->r_offset + 4); | |
15062 | } | |
15063 | } | |
15064 | } | |
15065 | break; | |
15066 | ||
52a82034 AM |
15067 | case R_PPC64_REL16_HA: |
15068 | /* If we are generating a non-PIC executable, edit | |
15069 | . 0: addis 2,12,.TOC.-0b@ha | |
15070 | . addi 2,2,.TOC.-0b@l | |
15071 | used by ELFv2 global entry points to set up r2, to | |
15072 | . lis 2,.TOC.@ha | |
15073 | . addi 2,2,.TOC.@l | |
15074 | if .TOC. is in range. */ | |
0e1862bb | 15075 | if (!bfd_link_pic (info) |
810d4e75 | 15076 | && !info->traditional_format |
006589cf | 15077 | && !htab->opd_abi |
4f038ee5 | 15078 | && rel->r_addend == d_offset |
52a82034 AM |
15079 | && h != NULL && &h->elf == htab->elf.hgot |
15080 | && rel + 1 < relend | |
15081 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15082 | && rel[1].r_offset == rel->r_offset + 4 | |
15083 | && rel[1].r_addend == rel->r_addend + 4 | |
15084 | && relocation + 0x80008000 <= 0xffffffff) | |
15085 | { | |
15086 | unsigned int insn1, insn2; | |
4a421c53 | 15087 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
15088 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15089 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15090 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15091 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15092 | { |
15093 | r_type = R_PPC64_ADDR16_HA; | |
15094 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15095 | rel->r_addend -= d_offset; | |
15096 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15097 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15098 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15099 | } |
15100 | } | |
15101 | break; | |
411e1bfb AM |
15102 | } |
15103 | ||
15104 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15105 | insn = 0; |
b25116a9 AM |
15106 | max_br_offset = 1 << 25; |
15107 | addend = rel->r_addend; | |
bc30df16 | 15108 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15109 | switch (r_type) |
5bd4f169 AM |
15110 | { |
15111 | default: | |
65f38f15 | 15112 | break; |
5bd4f169 | 15113 | |
3b421ab3 AM |
15114 | case R_PPC64_TOCSAVE: |
15115 | if (relocation + addend == (rel->r_offset | |
15116 | + input_section->output_offset | |
15117 | + input_section->output_section->vma) | |
15118 | && tocsave_find (htab, NO_INSERT, | |
15119 | &local_syms, rel, input_bfd)) | |
15120 | { | |
15121 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15122 | if (insn == NOP | |
15123 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15124 | bfd_put_32 (input_bfd, |
15125 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15126 | contents + rel->r_offset); |
15127 | } | |
15128 | break; | |
15129 | ||
65f38f15 AM |
15130 | /* Branch taken prediction relocations. */ |
15131 | case R_PPC64_ADDR14_BRTAKEN: | |
15132 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15133 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15134 | /* Fall through. */ |
65f38f15 | 15135 | |
86c76c7b | 15136 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15137 | case R_PPC64_ADDR14_BRNTAKEN: |
15138 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15139 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15140 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15141 | /* Fall through. */ |
86c76c7b | 15142 | |
b25116a9 AM |
15143 | case R_PPC64_REL14: |
15144 | max_br_offset = 1 << 15; | |
1a0670f3 | 15145 | /* Fall through. */ |
5bd4f169 | 15146 | |
65f38f15 | 15147 | case R_PPC64_REL24: |
05d0e962 | 15148 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15149 | case R_PPC64_PLTCALL: |
5663e321 | 15150 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
15151 | /* Calls to functions with a different TOC, such as calls to |
15152 | shared objects, need to alter the TOC pointer. This is | |
15153 | done using a linkage stub. A REL24 branching to these | |
15154 | linkage stubs needs to be followed by a nop, as the nop | |
15155 | will be replaced with an instruction to restore the TOC | |
15156 | base pointer. */ | |
8387904d | 15157 | fdh = h; |
b31867b6 AM |
15158 | if (h != NULL |
15159 | && h->oh != NULL | |
15160 | && h->oh->is_func_descriptor) | |
15161 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15162 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15163 | htab); | |
5663e321 AM |
15164 | if ((r_type == R_PPC64_PLTCALL |
15165 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 15166 | && stub_entry != NULL |
05d0e962 AM |
15167 | && stub_entry->stub_type >= ppc_stub_plt_call |
15168 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15169 | stub_entry = NULL; |
15170 | ||
6abec6bc | 15171 | if (stub_entry != NULL |
d0abeec8 AM |
15172 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
15173 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 15174 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15175 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15176 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15177 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15178 | { |
b25116a9 | 15179 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 15180 | |
6e1816be AM |
15181 | if (stub_entry->stub_type == ppc_stub_plt_call |
15182 | && !htab->opd_abi | |
15183 | && htab->params->plt_localentry0 != 0 | |
15184 | && is_elfv2_localentry0 (&h->elf)) | |
15185 | { | |
15186 | /* The function doesn't use or change r2. */ | |
15187 | can_plt_call = TRUE; | |
15188 | } | |
05d0e962 AM |
15189 | else if (r_type == R_PPC64_REL24_NOTOC) |
15190 | { | |
15191 | /* NOTOC calls don't need to restore r2. */ | |
15192 | can_plt_call = TRUE; | |
15193 | } | |
6e1816be | 15194 | |
f378ab09 | 15195 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15196 | branch and link followed by a nop. The nop is |
15197 | replaced by an insn to restore r2. */ | |
6e1816be | 15198 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15199 | { |
ba8ca3e7 AM |
15200 | unsigned long br; |
15201 | ||
15202 | br = bfd_get_32 (input_bfd, | |
15203 | contents + rel->r_offset); | |
15204 | if ((br & 1) != 0) | |
41bd81ab | 15205 | { |
ba8ca3e7 AM |
15206 | unsigned long nop; |
15207 | ||
15208 | nop = bfd_get_32 (input_bfd, | |
15209 | contents + rel->r_offset + 4); | |
23cedd1d AM |
15210 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
15211 | can_plt_call = TRUE; | |
15212 | else if (nop == NOP | |
15213 | || nop == CROR_151515 | |
15214 | || nop == CROR_313131) | |
a7f2871e | 15215 | { |
ba8ca3e7 AM |
15216 | if (h != NULL |
15217 | && (h == htab->tls_get_addr_fd | |
15218 | || h == htab->tls_get_addr) | |
7c9cf415 | 15219 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15220 | { |
15221 | /* Special stub used, leave nop alone. */ | |
15222 | } | |
15223 | else | |
a078d95a AM |
15224 | bfd_put_32 (input_bfd, |
15225 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
15226 | contents + rel->r_offset + 4); |
15227 | can_plt_call = TRUE; | |
a7f2871e | 15228 | } |
41bd81ab | 15229 | } |
5bd4f169 | 15230 | } |
721956f4 | 15231 | |
ba8ca3e7 | 15232 | if (!can_plt_call && h != NULL) |
721956f4 | 15233 | { |
ba8ca3e7 AM |
15234 | const char *name = h->elf.root.root.string; |
15235 | ||
15236 | if (*name == '.') | |
15237 | ++name; | |
15238 | ||
15239 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
15240 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 15241 | { |
ba8ca3e7 AM |
15242 | /* Allow crt1 branch to go via a toc adjusting |
15243 | stub. Other calls that never return could do | |
15244 | the same, if we could detect such. */ | |
b25116a9 | 15245 | can_plt_call = TRUE; |
6ab189d5 | 15246 | } |
ba8ca3e7 AM |
15247 | } |
15248 | ||
15249 | if (!can_plt_call) | |
15250 | { | |
15251 | /* g++ as of 20130507 emits self-calls without a | |
15252 | following nop. This is arguably wrong since we | |
15253 | have conflicting information. On the one hand a | |
15254 | global symbol and on the other a local call | |
15255 | sequence, but don't error for this special case. | |
15256 | It isn't possible to cheaply verify we have | |
15257 | exactly such a call. Allow all calls to the same | |
15258 | section. */ | |
15259 | asection *code_sec = sec; | |
15260 | ||
15261 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15262 | { |
ba8ca3e7 AM |
15263 | bfd_vma off = (relocation + addend |
15264 | - sec->output_section->vma | |
15265 | - sec->output_offset); | |
bc30df16 | 15266 | |
ba8ca3e7 | 15267 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 15268 | } |
ba8ca3e7 AM |
15269 | if (code_sec == input_section) |
15270 | can_plt_call = TRUE; | |
15271 | } | |
15272 | ||
15273 | if (!can_plt_call) | |
15274 | { | |
05d0e962 AM |
15275 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15276 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15277 | info->callbacks->einfo |
695344c0 | 15278 | /* xgettext:c-format */ |
c1c8c1ef | 15279 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15280 | "(plt call stub)\n"), |
4805fc55 AM |
15281 | input_bfd, input_section, rel->r_offset, sym_name); |
15282 | else | |
15283 | info->callbacks->einfo | |
695344c0 | 15284 | /* xgettext:c-format */ |
c1c8c1ef | 15285 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15286 | "(toc save/adjust stub)\n"), |
4805fc55 | 15287 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15288 | |
15289 | bfd_set_error (bfd_error_bad_value); | |
15290 | ret = FALSE; | |
721956f4 AM |
15291 | } |
15292 | ||
b25116a9 | 15293 | if (can_plt_call |
05d0e962 AM |
15294 | && stub_entry->stub_type >= ppc_stub_plt_call |
15295 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15296 | unresolved_reloc = FALSE; |
15297 | } | |
15298 | ||
6abec6bc AM |
15299 | if ((stub_entry == NULL |
15300 | || stub_entry->stub_type == ppc_stub_long_branch | |
15301 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15302 | && get_opd_info (sec) != NULL) |
15303 | { | |
15304 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15305 | bfd_vma off = (relocation + addend |
15306 | - sec->output_section->vma | |
15307 | - sec->output_offset); | |
aef36ac1 | 15308 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15309 | if (dest != (bfd_vma) -1) |
15310 | { | |
15311 | relocation = dest; | |
15312 | addend = 0; | |
bc30df16 | 15313 | reloc_dest = DEST_OPD; |
8387904d AM |
15314 | } |
15315 | } | |
15316 | ||
b25116a9 AM |
15317 | /* If the branch is out of reach we ought to have a long |
15318 | branch stub. */ | |
15319 | from = (rel->r_offset | |
15320 | + input_section->output_offset | |
15321 | + input_section->output_section->vma); | |
15322 | ||
6911b7dc AM |
15323 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15324 | ? fdh->elf.other | |
15325 | : sym->st_other); | |
15326 | ||
6abec6bc AM |
15327 | if (stub_entry != NULL |
15328 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15329 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15330 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15331 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15332 | || (relocation + addend - from + max_br_offset | |
15333 | < 2 * max_br_offset))) | |
15334 | /* Don't use the stub if this branch is in range. */ | |
15335 | stub_entry = NULL; | |
b25116a9 | 15336 | |
05d0e962 AM |
15337 | if (stub_entry != NULL |
15338 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15339 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15340 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15341 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15342 | && (r_type != R_PPC64_REL24_NOTOC | |
15343 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15344 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15345 | && (relocation + addend - from + max_br_offset |
15346 | < 2 * max_br_offset)) | |
15347 | stub_entry = NULL; | |
15348 | ||
15349 | if (stub_entry != NULL | |
15350 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15351 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15352 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15353 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15354 | && r_type == R_PPC64_REL24_NOTOC | |
15355 | && (relocation + addend - from + max_br_offset | |
15356 | < 2 * max_br_offset)) | |
15357 | stub_entry = NULL; | |
15358 | ||
b25116a9 AM |
15359 | if (stub_entry != NULL) |
15360 | { | |
15361 | /* Munge up the value and addend so that we call the stub | |
15362 | rather than the procedure directly. */ | |
a4b6fadd AM |
15363 | asection *stub_sec = stub_entry->group->stub_sec; |
15364 | ||
15365 | if (stub_entry->stub_type == ppc_stub_save_res) | |
15366 | relocation += (stub_sec->output_offset | |
15367 | + stub_sec->output_section->vma | |
15368 | + stub_sec->size - htab->sfpr->size | |
15369 | - htab->sfpr->output_offset | |
15370 | - htab->sfpr->output_section->vma); | |
15371 | else | |
15372 | relocation = (stub_entry->stub_offset | |
15373 | + stub_sec->output_offset | |
15374 | + stub_sec->output_section->vma); | |
b25116a9 | 15375 | addend = 0; |
bc30df16 | 15376 | reloc_dest = DEST_STUB; |
3b421ab3 | 15377 | |
05d0e962 AM |
15378 | if (((stub_entry->stub_type == ppc_stub_plt_call |
15379 | && ALWAYS_EMIT_R2SAVE) | |
15380 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
15381 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 AM |
15382 | && !(h != NULL |
15383 | && (h == htab->tls_get_addr_fd | |
15384 | || h == htab->tls_get_addr) | |
15385 | && htab->params->tls_get_addr_opt) | |
3b421ab3 AM |
15386 | && rel + 1 < relend |
15387 | && rel[1].r_offset == rel->r_offset + 4 | |
15388 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
15389 | relocation += 4; | |
05d0e962 AM |
15390 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
15391 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
15392 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
15393 | && r_type == R_PPC64_REL24_NOTOC) | |
15394 | relocation += 4; | |
5663e321 AM |
15395 | |
15396 | if (r_type == R_PPC64_REL24_NOTOC | |
15397 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
15398 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
15399 | htab->notoc_plt = 1; | |
b25116a9 AM |
15400 | } |
15401 | ||
15402 | if (insn != 0) | |
15403 | { | |
794e51c0 | 15404 | if (is_isa_v2) |
721956f4 | 15405 | { |
b25116a9 AM |
15406 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
15407 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
15408 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
15409 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
15410 | insn |= 0x02 << 21; | |
15411 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
15412 | insn |= 0x08 << 21; | |
15413 | else | |
15414 | break; | |
15415 | } | |
15416 | else | |
15417 | { | |
15418 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 15419 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 15420 | insn ^= 0x01 << 21; |
721956f4 | 15421 | } |
b25116a9 | 15422 | |
95f0d0d2 | 15423 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 15424 | } |
e86ce104 | 15425 | |
06da1e8e AM |
15426 | /* NOP out calls to undefined weak functions. |
15427 | We can thus call a weak function without first | |
15428 | checking whether the function is defined. */ | |
b25116a9 | 15429 | else if (h != NULL |
039b3fef | 15430 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 15431 | && h->elf.dynindx == -1 |
05d0e962 AM |
15432 | && (r_type == R_PPC64_REL24 |
15433 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 15434 | && relocation == 0 |
4cc603a5 | 15435 | && addend == 0) |
e86ce104 | 15436 | { |
95f0d0d2 | 15437 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 15438 | goto copy_reloc; |
e86ce104 | 15439 | } |
65f38f15 | 15440 | break; |
066f4018 AM |
15441 | |
15442 | case R_PPC64_GOT16_DS: | |
15443 | from = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15444 | if (relocation + addend - from + 0x8000 < 0x10000 | |
15445 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15446 | { | |
15447 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 15448 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
15449 | { |
15450 | insn += (14u << 26) - (58u << 26); | |
15451 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15452 | r_type = R_PPC64_TOC16; | |
15453 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15454 | } | |
15455 | } | |
15456 | break; | |
15457 | ||
15458 | case R_PPC64_GOT16_LO_DS: | |
15459 | case R_PPC64_GOT16_HA: | |
15460 | from = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15461 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
15462 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15463 | { | |
15464 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 15465 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
15466 | { |
15467 | insn += (14u << 26) - (58u << 26); | |
15468 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15469 | r_type = R_PPC64_TOC16_LO; | |
15470 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15471 | } | |
2365f8d7 | 15472 | else if ((insn & (0x3fu << 26)) == 15u << 26 /* addis */) |
066f4018 AM |
15473 | { |
15474 | r_type = R_PPC64_TOC16_HA; | |
15475 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15476 | } | |
15477 | } | |
15478 | break; | |
4a421c53 AM |
15479 | |
15480 | case R_PPC64_GOT_PCREL34: | |
15481 | from = (rel->r_offset | |
15482 | + input_section->output_section->vma | |
15483 | + input_section->output_offset); | |
15484 | if (relocation - from + (1ULL << 33) < 1ULL << 34 | |
15485 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15486 | { | |
15487 | offset = rel->r_offset; | |
15488 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15489 | pinsn <<= 32; | |
15490 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15491 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15492 | == ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
15493 | { | |
15494 | /* Replace with paddi. */ | |
15495 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
15496 | r_type = R_PPC64_PCREL34; | |
15497 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15498 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
15499 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
15500 | goto pcrelopt; | |
15501 | } | |
15502 | } | |
15503 | break; | |
15504 | ||
15505 | case R_PPC64_PCREL34: | |
15506 | if (SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15507 | { | |
15508 | offset = rel->r_offset; | |
15509 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15510 | pinsn <<= 32; | |
15511 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15512 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15513 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
15514 | | (14ULL << 26) /* paddi */)) | |
15515 | { | |
15516 | pcrelopt: | |
15517 | if (rel + 1 < relend | |
15518 | && rel[1].r_offset == offset | |
15519 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT)) | |
15520 | { | |
15521 | bfd_vma off2 = rel[1].r_addend; | |
15522 | if (off2 == 0) | |
15523 | /* zero means next insn. */ | |
15524 | off2 = 8; | |
15525 | off2 += offset; | |
15526 | if (off2 + 4 <= input_section->size) | |
15527 | { | |
15528 | uint64_t pinsn2; | |
dd9b12c2 | 15529 | bfd_signed_vma addend_off; |
4a421c53 AM |
15530 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); |
15531 | pinsn2 <<= 32; | |
15532 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
77486630 AM |
15533 | { |
15534 | if (off2 + 8 > input_section->size) | |
15535 | break; | |
15536 | pinsn2 |= bfd_get_32 (input_bfd, | |
15537 | contents + off2 + 4); | |
15538 | } | |
dd9b12c2 | 15539 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) |
4a421c53 | 15540 | { |
dd9b12c2 AM |
15541 | addend += addend_off; |
15542 | rel->r_addend = addend; | |
4a421c53 AM |
15543 | bfd_put_32 (input_bfd, pinsn >> 32, |
15544 | contents + offset); | |
15545 | bfd_put_32 (input_bfd, pinsn, | |
15546 | contents + offset + 4); | |
15547 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
15548 | contents + off2); | |
77486630 AM |
15549 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
15550 | bfd_put_32 (input_bfd, pinsn2, | |
15551 | contents + off2 + 4); | |
4a421c53 AM |
15552 | } |
15553 | } | |
15554 | } | |
15555 | } | |
15556 | } | |
15557 | break; | |
65f38f15 | 15558 | } |
5bd4f169 | 15559 | |
411e1bfb | 15560 | tls_type = 0; |
23cedd1d | 15561 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
15562 | switch (r_type) |
15563 | { | |
15564 | default: | |
cf97bcb0 AM |
15565 | /* xgettext:c-format */ |
15566 | _bfd_error_handler (_("%pB: %s unsupported"), | |
15567 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 15568 | |
65f38f15 | 15569 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15570 | ret = FALSE; |
c316a17c | 15571 | goto copy_reloc; |
5bd4f169 | 15572 | |
65f38f15 | 15573 | case R_PPC64_NONE: |
411e1bfb | 15574 | case R_PPC64_TLS: |
727fc41e AM |
15575 | case R_PPC64_TLSGD: |
15576 | case R_PPC64_TLSLD: | |
3b421ab3 | 15577 | case R_PPC64_TOCSAVE: |
04c9666a AM |
15578 | case R_PPC64_GNU_VTINHERIT: |
15579 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 15580 | case R_PPC64_ENTRY: |
4a421c53 | 15581 | case R_PPC64_PCREL_OPT: |
c316a17c | 15582 | goto copy_reloc; |
5bd4f169 AM |
15583 | |
15584 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
15585 | address in the GOT as relocation value instead of the | |
411e1bfb | 15586 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 15587 | symbol and put the symbol value there. */ |
411e1bfb AM |
15588 | case R_PPC64_GOT_TLSGD16: |
15589 | case R_PPC64_GOT_TLSGD16_LO: | |
15590 | case R_PPC64_GOT_TLSGD16_HI: | |
15591 | case R_PPC64_GOT_TLSGD16_HA: | |
c213164a | 15592 | case R_PPC64_GOT_TLSGD34: |
951fd09b | 15593 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
15594 | goto dogot; |
15595 | ||
15596 | case R_PPC64_GOT_TLSLD16: | |
15597 | case R_PPC64_GOT_TLSLD16_LO: | |
15598 | case R_PPC64_GOT_TLSLD16_HI: | |
15599 | case R_PPC64_GOT_TLSLD16_HA: | |
c213164a | 15600 | case R_PPC64_GOT_TLSLD34: |
951fd09b | 15601 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
15602 | goto dogot; |
15603 | ||
15604 | case R_PPC64_GOT_TPREL16_DS: | |
15605 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15606 | case R_PPC64_GOT_TPREL16_HI: | |
15607 | case R_PPC64_GOT_TPREL16_HA: | |
c213164a | 15608 | case R_PPC64_GOT_TPREL34: |
411e1bfb AM |
15609 | tls_type = TLS_TLS | TLS_TPREL; |
15610 | goto dogot; | |
15611 | ||
15612 | case R_PPC64_GOT_DTPREL16_DS: | |
15613 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15614 | case R_PPC64_GOT_DTPREL16_HI: | |
15615 | case R_PPC64_GOT_DTPREL16_HA: | |
c213164a | 15616 | case R_PPC64_GOT_DTPREL34: |
411e1bfb AM |
15617 | tls_type = TLS_TLS | TLS_DTPREL; |
15618 | goto dogot; | |
15619 | ||
65f38f15 AM |
15620 | case R_PPC64_GOT16: |
15621 | case R_PPC64_GOT16_LO: | |
15622 | case R_PPC64_GOT16_HI: | |
15623 | case R_PPC64_GOT16_HA: | |
15624 | case R_PPC64_GOT16_DS: | |
15625 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 15626 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 15627 | dogot: |
5bd4f169 AM |
15628 | { |
15629 | /* Relocation is to the entry for this symbol in the global | |
15630 | offset table. */ | |
e717da7e | 15631 | asection *got; |
d881513a | 15632 | bfd_vma *offp; |
5bd4f169 | 15633 | bfd_vma off; |
d881513a | 15634 | unsigned long indx = 0; |
927be08e | 15635 | struct got_entry *ent; |
65f38f15 | 15636 | |
d881513a | 15637 | if (tls_type == (TLS_TLS | TLS_LD) |
f749f26e | 15638 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
927be08e | 15639 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 15640 | else |
5bd4f169 | 15641 | { |
d881513a AM |
15642 | if (h != NULL) |
15643 | { | |
f0158f44 AM |
15644 | if (!htab->elf.dynamic_sections_created |
15645 | || h->elf.dynindx == -1 | |
15646 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 15647 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
15648 | /* This is actually a static link, or it is a |
15649 | -Bsymbolic link and the symbol is defined | |
15650 | locally, or the symbol was forced to be local | |
15651 | because of a version file. */ | |
15652 | ; | |
15653 | else | |
15654 | { | |
039b3fef | 15655 | indx = h->elf.dynindx; |
d881513a AM |
15656 | unresolved_reloc = FALSE; |
15657 | } | |
039b3fef | 15658 | ent = h->elf.got.glist; |
d881513a | 15659 | } |
411e1bfb | 15660 | else |
5bd4f169 | 15661 | { |
d881513a AM |
15662 | if (local_got_ents == NULL) |
15663 | abort (); | |
15664 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15665 | } |
d881513a AM |
15666 | |
15667 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 15668 | if (ent->addend == orig_rel.r_addend |
e717da7e | 15669 | && ent->owner == input_bfd |
d881513a AM |
15670 | && ent->tls_type == tls_type) |
15671 | break; | |
5bd4f169 | 15672 | } |
411e1bfb | 15673 | |
927be08e AM |
15674 | if (ent == NULL) |
15675 | abort (); | |
15676 | if (ent->is_indirect) | |
15677 | ent = ent->got.ent; | |
15678 | offp = &ent->got.offset; | |
15679 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15680 | if (got == NULL) |
15681 | abort (); | |
15682 | ||
411e1bfb AM |
15683 | /* The offset must always be a multiple of 8. We use the |
15684 | least significant bit to record whether we have already | |
15685 | processed this entry. */ | |
d881513a | 15686 | off = *offp; |
411e1bfb AM |
15687 | if ((off & 1) != 0) |
15688 | off &= ~1; | |
5bd4f169 AM |
15689 | else |
15690 | { | |
411e1bfb AM |
15691 | /* Generate relocs for the dynamic linker, except in |
15692 | the case of TLSLD where we'll use one entry per | |
15693 | module. */ | |
25f23106 AM |
15694 | asection *relgot; |
15695 | bfd_boolean ifunc; | |
e717da7e | 15696 | |
d881513a | 15697 | *offp = off | 1; |
25f23106 AM |
15698 | relgot = NULL; |
15699 | ifunc = (h != NULL | |
15700 | ? h->elf.type == STT_GNU_IFUNC | |
15701 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15702 | if (ifunc) |
82e66161 AM |
15703 | { |
15704 | relgot = htab->elf.irelplt; | |
15705 | if (indx == 0) | |
15706 | htab->local_ifunc_resolver = 1; | |
15707 | else if (is_static_defined (&h->elf)) | |
15708 | htab->maybe_local_ifunc_resolver = 1; | |
15709 | } | |
f0158f44 AM |
15710 | else if (indx != 0 |
15711 | || (bfd_link_pic (info) | |
15712 | && (h == NULL | |
f749f26e AM |
15713 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
15714 | && !(tls_type != 0 | |
f15d0b54 AM |
15715 | && bfd_link_executable (info) |
15716 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15717 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15718 | if (relgot != NULL) |
5bd4f169 | 15719 | { |
e717da7e AM |
15720 | outrel.r_offset = (got->output_section->vma |
15721 | + got->output_offset | |
411e1bfb | 15722 | + off); |
133a1f60 | 15723 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 15724 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15725 | { |
411e1bfb | 15726 | outrel.r_addend = 0; |
e515b051 | 15727 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15728 | if (tls_type == (TLS_TLS | TLS_GD)) |
15729 | { | |
e717da7e AM |
15730 | loc = relgot->contents; |
15731 | loc += (relgot->reloc_count++ | |
d881513a AM |
15732 | * sizeof (Elf64_External_Rela)); |
15733 | bfd_elf64_swap_reloca_out (output_bfd, | |
15734 | &outrel, loc); | |
e515b051 | 15735 | outrel.r_offset += 8; |
133a1f60 | 15736 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
15737 | outrel.r_info |
15738 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15739 | } |
411e1bfb | 15740 | } |
951fd09b | 15741 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15742 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15743 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15744 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15745 | else if (indx != 0) |
15746 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15747 | else | |
81407a69 | 15748 | { |
25f23106 AM |
15749 | if (ifunc) |
15750 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15751 | else | |
15752 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15753 | |
15754 | /* Write the .got section contents for the sake | |
15755 | of prelink. */ | |
e717da7e | 15756 | loc = got->contents + off; |
23fbd6fa JJ |
15757 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15758 | loc); | |
81407a69 | 15759 | } |
81407a69 AM |
15760 | |
15761 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15762 | { |
15763 | outrel.r_addend += relocation; | |
15764 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15765 | { |
15766 | if (htab->elf.tls_sec == NULL) | |
15767 | outrel.r_addend = 0; | |
15768 | else | |
15769 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15770 | } | |
e515b051 | 15771 | } |
e717da7e AM |
15772 | loc = relgot->contents; |
15773 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15774 | * sizeof (Elf64_External_Rela)); |
15775 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15776 | } | |
15777 | ||
ad8e1ba5 | 15778 | /* Init the .got section contents here if we're not |
81407a69 | 15779 | emitting a reloc. */ |
d881513a | 15780 | else |
411e1bfb | 15781 | { |
133a1f60 | 15782 | relocation += orig_rel.r_addend; |
f0158f44 | 15783 | if (tls_type != 0) |
411e1bfb | 15784 | { |
989f9879 AM |
15785 | if (htab->elf.tls_sec == NULL) |
15786 | relocation = 0; | |
15787 | else | |
15788 | { | |
f0158f44 AM |
15789 | if (tls_type & TLS_LD) |
15790 | relocation = 0; | |
15791 | else | |
15792 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15793 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15794 | relocation += DTP_OFFSET - TP_OFFSET; |
15795 | } | |
5bd4f169 | 15796 | |
f0158f44 | 15797 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15798 | { |
15799 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15800 | got->contents + off + 8); |
676ee2b5 | 15801 | relocation = 1; |
7b609f53 | 15802 | } |
411e1bfb AM |
15803 | } |
15804 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15805 | got->contents + off); |
5bd4f169 AM |
15806 | } |
15807 | } | |
15808 | ||
65f38f15 AM |
15809 | if (off >= (bfd_vma) -2) |
15810 | abort (); | |
15811 | ||
bf102f86 | 15812 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 15813 | addend = 0; |
c213164a AM |
15814 | if (!(r_type == R_PPC64_GOT_PCREL34 |
15815 | || r_type == R_PPC64_GOT_TLSGD34 | |
15816 | || r_type == R_PPC64_GOT_TLSLD34 | |
15817 | || r_type == R_PPC64_GOT_TPREL34 | |
15818 | || r_type == R_PPC64_GOT_DTPREL34)) | |
5663e321 | 15819 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 15820 | } |
65f38f15 AM |
15821 | break; |
15822 | ||
15823 | case R_PPC64_PLT16_HA: | |
15824 | case R_PPC64_PLT16_HI: | |
15825 | case R_PPC64_PLT16_LO: | |
08be3224 | 15826 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
15827 | case R_PPC64_PLT_PCREL34: |
15828 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
15829 | case R_PPC64_PLT32: |
15830 | case R_PPC64_PLT64: | |
23cedd1d | 15831 | case R_PPC64_PLTSEQ: |
5663e321 | 15832 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 15833 | case R_PPC64_PLTCALL: |
5663e321 | 15834 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
15835 | /* Relocation is to the entry for this symbol in the |
15836 | procedure linkage table. */ | |
23cedd1d | 15837 | unresolved_reloc = TRUE; |
cbf95972 AM |
15838 | { |
15839 | struct plt_entry **plt_list = NULL; | |
15840 | if (h != NULL) | |
15841 | plt_list = &h->elf.plt.plist; | |
15842 | else if (local_got_ents != NULL) | |
15843 | { | |
15844 | struct plt_entry **local_plt = (struct plt_entry **) | |
15845 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15846 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15847 | } |
15848 | if (plt_list) | |
15849 | { | |
15850 | struct plt_entry *ent; | |
65f38f15 | 15851 | |
cbf95972 AM |
15852 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15853 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 15854 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
15855 | { |
15856 | asection *plt; | |
08be3224 | 15857 | bfd_vma got; |
cbf95972 AM |
15858 | |
15859 | plt = htab->elf.splt; | |
15860 | if (!htab->elf.dynamic_sections_created | |
15861 | || h == NULL | |
15862 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15863 | { |
15864 | if (h != NULL | |
15865 | ? h->elf.type == STT_GNU_IFUNC | |
15866 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15867 | plt = htab->elf.iplt; | |
15868 | else | |
15869 | plt = htab->pltlocal; | |
15870 | } | |
15871 | relocation = (plt->output_section->vma | |
15872 | + plt->output_offset | |
15873 | + ent->plt.offset); | |
08be3224 | 15874 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
15875 | || r_type == R_PPC64_PLT16_HI |
15876 | || r_type == R_PPC64_PLT16_LO | |
15877 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
15878 | { |
15879 | got = (elf_gp (output_bfd) | |
15880 | + htab->sec_info[input_section->id].toc_off); | |
15881 | relocation -= got; | |
15882 | } | |
133a1f60 | 15883 | addend = 0; |
cbf95972 AM |
15884 | unresolved_reloc = FALSE; |
15885 | break; | |
15886 | } | |
15887 | } | |
15888 | } | |
65f38f15 | 15889 | break; |
5bd4f169 | 15890 | |
0b13192e AM |
15891 | case R_PPC64_TOC: |
15892 | /* Relocation value is TOC base. */ | |
15893 | relocation = TOCstart; | |
cf35638d | 15894 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15895 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15896 | else if (unresolved_reloc) |
15897 | ; | |
6f20ed8a AM |
15898 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15899 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15900 | else |
15901 | unresolved_reloc = TRUE; | |
ab96bf03 | 15902 | goto dodyn; |
0b13192e | 15903 | |
5bd4f169 AM |
15904 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15905 | which is the address of the start of the TOC plus 0x8000. | |
15906 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15907 | in this order. */ | |
65f38f15 AM |
15908 | case R_PPC64_TOC16: |
15909 | case R_PPC64_TOC16_LO: | |
15910 | case R_PPC64_TOC16_HI: | |
15911 | case R_PPC64_TOC16_DS: | |
15912 | case R_PPC64_TOC16_LO_DS: | |
15913 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15914 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
15915 | if (h != NULL) |
15916 | goto dodyn; | |
5bd4f169 AM |
15917 | break; |
15918 | ||
15919 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15920 | case R_PPC64_SECTOFF: |
15921 | case R_PPC64_SECTOFF_LO: | |
15922 | case R_PPC64_SECTOFF_HI: | |
15923 | case R_PPC64_SECTOFF_DS: | |
15924 | case R_PPC64_SECTOFF_LO_DS: | |
15925 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15926 | if (sec != NULL) |
65f38f15 | 15927 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15928 | break; |
15929 | ||
25f23106 AM |
15930 | case R_PPC64_REL16: |
15931 | case R_PPC64_REL16_LO: | |
15932 | case R_PPC64_REL16_HI: | |
15933 | case R_PPC64_REL16_HA: | |
4a969973 AM |
15934 | case R_PPC64_REL16_HIGH: |
15935 | case R_PPC64_REL16_HIGHA: | |
15936 | case R_PPC64_REL16_HIGHER: | |
15937 | case R_PPC64_REL16_HIGHERA: | |
15938 | case R_PPC64_REL16_HIGHEST: | |
15939 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
15940 | case R_PPC64_REL16_HIGHER34: |
15941 | case R_PPC64_REL16_HIGHERA34: | |
15942 | case R_PPC64_REL16_HIGHEST34: | |
15943 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 15944 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
15945 | case R_PPC64_REL14: |
15946 | case R_PPC64_REL14_BRNTAKEN: | |
15947 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 15948 | case R_PPC64_REL24: |
05d0e962 | 15949 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
15950 | case R_PPC64_PCREL34: |
15951 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
15952 | break; |
15953 | ||
411e1bfb AM |
15954 | case R_PPC64_TPREL16: |
15955 | case R_PPC64_TPREL16_LO: | |
15956 | case R_PPC64_TPREL16_HI: | |
15957 | case R_PPC64_TPREL16_HA: | |
15958 | case R_PPC64_TPREL16_DS: | |
15959 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15960 | case R_PPC64_TPREL16_HIGH: |
15961 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15962 | case R_PPC64_TPREL16_HIGHER: |
15963 | case R_PPC64_TPREL16_HIGHERA: | |
15964 | case R_PPC64_TPREL16_HIGHEST: | |
15965 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 15966 | case R_PPC64_TPREL34: |
766bc656 AM |
15967 | if (h != NULL |
15968 | && h->elf.root.type == bfd_link_hash_undefweak | |
15969 | && h->elf.dynindx == -1) | |
15970 | { | |
15971 | /* Make this relocation against an undefined weak symbol | |
15972 | resolve to zero. This is really just a tweak, since | |
15973 | code using weak externs ought to check that they are | |
15974 | defined before using them. */ | |
15975 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15976 | ||
95f0d0d2 | 15977 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15978 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15979 | if (insn != 0) | |
95f0d0d2 | 15980 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15981 | break; |
15982 | } | |
989f9879 AM |
15983 | if (htab->elf.tls_sec != NULL) |
15984 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15985 | /* The TPREL16 relocs shouldn't really be used in shared |
15986 | libs or with non-local symbols as that will result in | |
15987 | DT_TEXTREL being set, but support them anyway. */ | |
15988 | goto dodyn; | |
411e1bfb AM |
15989 | |
15990 | case R_PPC64_DTPREL16: | |
15991 | case R_PPC64_DTPREL16_LO: | |
15992 | case R_PPC64_DTPREL16_HI: | |
15993 | case R_PPC64_DTPREL16_HA: | |
15994 | case R_PPC64_DTPREL16_DS: | |
15995 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15996 | case R_PPC64_DTPREL16_HIGH: |
15997 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15998 | case R_PPC64_DTPREL16_HIGHER: |
15999 | case R_PPC64_DTPREL16_HIGHERA: | |
16000 | case R_PPC64_DTPREL16_HIGHEST: | |
16001 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 16002 | case R_PPC64_DTPREL34: |
989f9879 AM |
16003 | if (htab->elf.tls_sec != NULL) |
16004 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
16005 | break; |
16006 | ||
45965137 AM |
16007 | case R_PPC64_ADDR64_LOCAL: |
16008 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
16009 | ? h->elf.other | |
16010 | : sym->st_other); | |
16011 | break; | |
16012 | ||
e515b051 AM |
16013 | case R_PPC64_DTPMOD64: |
16014 | relocation = 1; | |
16015 | addend = 0; | |
16016 | goto dodyn; | |
16017 | ||
411e1bfb | 16018 | case R_PPC64_TPREL64: |
989f9879 AM |
16019 | if (htab->elf.tls_sec != NULL) |
16020 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
16021 | goto dodyn; |
16022 | ||
16023 | case R_PPC64_DTPREL64: | |
989f9879 AM |
16024 | if (htab->elf.tls_sec != NULL) |
16025 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 16026 | /* Fall through. */ |
411e1bfb | 16027 | |
65f38f15 AM |
16028 | /* Relocations that may need to be propagated if this is a |
16029 | dynamic object. */ | |
04c9666a | 16030 | case R_PPC64_REL30: |
65f38f15 AM |
16031 | case R_PPC64_REL32: |
16032 | case R_PPC64_REL64: | |
16033 | case R_PPC64_ADDR14: | |
16034 | case R_PPC64_ADDR14_BRNTAKEN: | |
16035 | case R_PPC64_ADDR14_BRTAKEN: | |
16036 | case R_PPC64_ADDR16: | |
16037 | case R_PPC64_ADDR16_DS: | |
16038 | case R_PPC64_ADDR16_HA: | |
16039 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16040 | case R_PPC64_ADDR16_HIGH: |
16041 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16042 | case R_PPC64_ADDR16_HIGHER: |
16043 | case R_PPC64_ADDR16_HIGHERA: | |
16044 | case R_PPC64_ADDR16_HIGHEST: | |
16045 | case R_PPC64_ADDR16_HIGHESTA: | |
16046 | case R_PPC64_ADDR16_LO: | |
16047 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
16048 | case R_PPC64_ADDR16_HIGHER34: |
16049 | case R_PPC64_ADDR16_HIGHERA34: | |
16050 | case R_PPC64_ADDR16_HIGHEST34: | |
16051 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 16052 | case R_PPC64_ADDR24: |
65f38f15 AM |
16053 | case R_PPC64_ADDR32: |
16054 | case R_PPC64_ADDR64: | |
16055 | case R_PPC64_UADDR16: | |
16056 | case R_PPC64_UADDR32: | |
16057 | case R_PPC64_UADDR64: | |
5663e321 AM |
16058 | case R_PPC64_D34: |
16059 | case R_PPC64_D34_LO: | |
16060 | case R_PPC64_D34_HI30: | |
16061 | case R_PPC64_D34_HA30: | |
16062 | case R_PPC64_D28: | |
411e1bfb | 16063 | dodyn: |
5d1634d7 | 16064 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16065 | break; |
16066 | ||
41bd81ab AM |
16067 | if (NO_OPD_RELOCS && is_opd) |
16068 | break; | |
16069 | ||
8a9e8e72 | 16070 | if (bfd_link_pic (info) |
b1b07054 AM |
16071 | ? ((h == NULL |
16072 | || h->dyn_relocs != NULL) | |
16073 | && ((h != NULL && pc_dynrelocs (h)) | |
16074 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
16075 | : (h != NULL |
16076 | ? h->dyn_relocs != NULL | |
d311bc8b | 16077 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16078 | { |
b34976b6 | 16079 | bfd_boolean skip, relocate; |
65f38f15 | 16080 | asection *sreloc; |
1cf1f670 | 16081 | bfd_vma out_off; |
82e66161 | 16082 | long indx = 0; |
65f38f15 AM |
16083 | |
16084 | /* When generating a dynamic object, these relocations | |
16085 | are copied into the output file to be resolved at run | |
16086 | time. */ | |
16087 | ||
b34976b6 AM |
16088 | skip = FALSE; |
16089 | relocate = FALSE; | |
65f38f15 | 16090 | |
1cf1f670 AM |
16091 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16092 | input_section, rel->r_offset); | |
16093 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 16094 | skip = TRUE; |
1cf1f670 | 16095 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 16096 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
16097 | out_off += (input_section->output_section->vma |
16098 | + input_section->output_offset); | |
16099 | outrel.r_offset = out_off; | |
411e1bfb | 16100 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16101 | |
1cf1f670 AM |
16102 | /* Optimize unaligned reloc use. */ |
16103 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16104 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16105 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16106 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16107 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16108 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16109 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16110 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16111 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16112 | ||
65f38f15 | 16113 | if (skip) |
0bb2d96a | 16114 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 16115 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
16116 | && !is_opd |
16117 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16118 | { |
82e66161 AM |
16119 | indx = h->elf.dynindx; |
16120 | BFD_ASSERT (indx != -1); | |
16121 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16122 | } |
65f38f15 AM |
16123 | else |
16124 | { | |
41bd81ab AM |
16125 | /* This symbol is local, or marked to become local, |
16126 | or this is an opd section reloc which must point | |
16127 | at a local function. */ | |
65f38f15 | 16128 | outrel.r_addend += relocation; |
e86ce104 | 16129 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16130 | { |
3fad3c7c | 16131 | if (is_opd && h != NULL) |
afbe61cf AM |
16132 | { |
16133 | /* Lie about opd entries. This case occurs | |
16134 | when building shared libraries and we | |
16135 | reference a function in another shared | |
3fad3c7c AM |
16136 | lib. The same thing happens for a weak |
16137 | definition in an application that's | |
16138 | overridden by a strong definition in a | |
16139 | shared lib. (I believe this is a generic | |
16140 | bug in binutils handling of weak syms.) | |
16141 | In these cases we won't use the opd | |
1e2f5b6e | 16142 | entry in this lib. */ |
b34976b6 | 16143 | unresolved_reloc = FALSE; |
afbe61cf | 16144 | } |
25f23106 AM |
16145 | if (!is_opd |
16146 | && r_type == R_PPC64_ADDR64 | |
16147 | && (h != NULL | |
16148 | ? h->elf.type == STT_GNU_IFUNC | |
16149 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16150 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16151 | else | |
16152 | { | |
16153 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16154 | |
25f23106 AM |
16155 | /* We need to relocate .opd contents for ld.so. |
16156 | Prelink also wants simple and consistent rules | |
16157 | for relocs. This make all RELATIVE relocs have | |
16158 | *r_offset equal to r_addend. */ | |
16159 | relocate = TRUE; | |
16160 | } | |
65f38f15 AM |
16161 | } |
16162 | else | |
16163 | { | |
25f23106 AM |
16164 | if (h != NULL |
16165 | ? h->elf.type == STT_GNU_IFUNC | |
16166 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16167 | { | |
25f53a85 | 16168 | info->callbacks->einfo |
695344c0 | 16169 | /* xgettext:c-format */ |
174d0a74 | 16170 | (_("%H: %s for indirect " |
c1c8c1ef | 16171 | "function `%pT' unsupported\n"), |
25f53a85 | 16172 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16173 | ppc64_elf_howto_table[r_type]->name, |
16174 | sym_name); | |
16175 | ret = FALSE; | |
16176 | } | |
cf35638d | 16177 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16178 | ; |
16179 | else if (sec == NULL || sec->owner == NULL) | |
16180 | { | |
16181 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 16182 | return FALSE; |
65f38f15 AM |
16183 | } |
16184 | else | |
16185 | { | |
f26a3287 | 16186 | asection *osec = sec->output_section; |
65f38f15 | 16187 | |
f26a3287 AM |
16188 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
16189 | { | |
16190 | /* TLS symbol values are relative to the | |
16191 | TLS segment. Dynamic relocations for | |
16192 | local TLS symbols therefore can't be | |
16193 | reduced to a relocation against their | |
16194 | section symbol because it holds the | |
16195 | address of the section, not a value | |
16196 | relative to the TLS segment. We could | |
16197 | change the .tdata dynamic section symbol | |
16198 | to be zero value but STN_UNDEF works | |
16199 | and is used elsewhere, eg. for TPREL64 | |
16200 | GOT relocs against local TLS symbols. */ | |
16201 | osec = htab->elf.tls_sec; | |
16202 | indx = 0; | |
16203 | } | |
16204 | else | |
74541ad4 | 16205 | { |
74541ad4 | 16206 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
16207 | if (indx == 0) |
16208 | { | |
16209 | if ((osec->flags & SEC_READONLY) == 0 | |
16210 | && htab->elf.data_index_section != NULL) | |
16211 | osec = htab->elf.data_index_section; | |
16212 | else | |
16213 | osec = htab->elf.text_index_section; | |
16214 | indx = elf_section_data (osec)->dynindx; | |
16215 | } | |
16216 | BFD_ASSERT (indx != 0); | |
74541ad4 | 16217 | } |
74541ad4 | 16218 | |
65f38f15 AM |
16219 | /* We are turning this relocation into one |
16220 | against a section symbol, so subtract out | |
16221 | the output section's address but not the | |
16222 | offset of the input section in the output | |
16223 | section. */ | |
16224 | outrel.r_addend -= osec->vma; | |
16225 | } | |
16226 | ||
16227 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16228 | } | |
16229 | } | |
16230 | ||
16231 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16232 | if (h != NULL |
16233 | ? h->elf.type == STT_GNU_IFUNC | |
16234 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16235 | { |
16236 | sreloc = htab->elf.irelplt; | |
16237 | if (indx == 0) | |
16238 | htab->local_ifunc_resolver = 1; | |
16239 | else if (is_static_defined (&h->elf)) | |
16240 | htab->maybe_local_ifunc_resolver = 1; | |
16241 | } | |
65f38f15 AM |
16242 | if (sreloc == NULL) |
16243 | abort (); | |
16244 | ||
dfbb6ac9 AM |
16245 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16246 | >= sreloc->size) | |
16247 | abort (); | |
947216bf AM |
16248 | loc = sreloc->contents; |
16249 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16250 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16251 | ||
e59a1001 AM |
16252 | if (!warned_dynamic |
16253 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
16254 | { | |
16255 | info->callbacks->einfo | |
16256 | /* xgettext:c-format */ | |
16257 | (_("%X%P: %pB: %s against %pT " | |
16258 | "is not supported by glibc as a dynamic relocation\n"), | |
16259 | input_bfd, | |
16260 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
16261 | sym_name); | |
16262 | warned_dynamic = TRUE; | |
16263 | } | |
16264 | ||
65f38f15 AM |
16265 | /* If this reloc is against an external symbol, it will |
16266 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16267 | anything now. However, for the sake of prelink ensure |
16268 | that the section contents are a known value. */ | |
2cdcc330 | 16269 | if (!relocate) |
81407a69 AM |
16270 | { |
16271 | unresolved_reloc = FALSE; | |
16272 | /* The value chosen here is quite arbitrary as ld.so | |
16273 | ignores section contents except for the special | |
16274 | case of .opd where the contents might be accessed | |
16275 | before relocation. Choose zero, as that won't | |
16276 | cause reloc overflow. */ | |
16277 | relocation = 0; | |
16278 | addend = 0; | |
16279 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16280 | to improve backward compatibility with older | |
16281 | versions of ld. */ | |
16282 | if (r_type == R_PPC64_ADDR64) | |
16283 | addend = outrel.r_addend; | |
16284 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16285 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16286 | addend = outrel.r_offset; |
81407a69 | 16287 | } |
65f38f15 | 16288 | } |
5bd4f169 AM |
16289 | break; |
16290 | ||
65f38f15 AM |
16291 | case R_PPC64_COPY: |
16292 | case R_PPC64_GLOB_DAT: | |
16293 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16294 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16295 | case R_PPC64_RELATIVE: |
16296 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16297 | files. */ | |
ae9a127f | 16298 | /* Fall through. */ |
65f38f15 AM |
16299 | |
16300 | case R_PPC64_PLTGOT16: | |
16301 | case R_PPC64_PLTGOT16_DS: | |
16302 | case R_PPC64_PLTGOT16_HA: | |
16303 | case R_PPC64_PLTGOT16_HI: | |
16304 | case R_PPC64_PLTGOT16_LO: | |
16305 | case R_PPC64_PLTGOT16_LO_DS: | |
16306 | case R_PPC64_PLTREL32: | |
16307 | case R_PPC64_PLTREL64: | |
16308 | /* These ones haven't been implemented yet. */ | |
16309 | ||
25f53a85 | 16310 | info->callbacks->einfo |
695344c0 | 16311 | /* xgettext:c-format */ |
c1c8c1ef | 16312 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16313 | input_bfd, |
4ce794b7 | 16314 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16315 | |
16316 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 16317 | ret = FALSE; |
c316a17c | 16318 | goto copy_reloc; |
65f38f15 | 16319 | } |
5bd4f169 | 16320 | |
67f0cbdb AM |
16321 | /* Multi-instruction sequences that access the TOC can be |
16322 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16323 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16324 | switch (r_type) |
16325 | { | |
16326 | default: | |
16327 | break; | |
16328 | ||
16329 | case R_PPC64_GOT_TLSLD16_HI: | |
16330 | case R_PPC64_GOT_TLSGD16_HI: | |
16331 | case R_PPC64_GOT_TPREL16_HI: | |
16332 | case R_PPC64_GOT_DTPREL16_HI: | |
16333 | case R_PPC64_GOT16_HI: | |
16334 | case R_PPC64_TOC16_HI: | |
16335 | /* These relocs would only be useful if building up an | |
16336 | offset to later add to r2, perhaps in an indexed | |
16337 | addressing mode instruction. Don't try to optimize. | |
16338 | Unfortunately, the possibility of someone building up an | |
16339 | offset like this or even with the HA relocs, means that | |
16340 | we need to check the high insn when optimizing the low | |
16341 | insn. */ | |
16342 | break; | |
16343 | ||
5663e321 AM |
16344 | case R_PPC64_PLTCALL_NOTOC: |
16345 | if (!unresolved_reloc) | |
16346 | htab->notoc_plt = 1; | |
16347 | /* Fall through. */ | |
23cedd1d AM |
16348 | case R_PPC64_PLTCALL: |
16349 | if (unresolved_reloc) | |
16350 | { | |
16351 | /* No plt entry. Make this into a direct call. */ | |
16352 | bfd_byte *p = contents + rel->r_offset; | |
16353 | insn = bfd_get_32 (input_bfd, p); | |
16354 | insn &= 1; | |
16355 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
16356 | if (r_type == R_PPC64_PLTCALL) |
16357 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
16358 | unresolved_reloc = save_unresolved_reloc; |
16359 | r_type = R_PPC64_REL24; | |
16360 | } | |
16361 | break; | |
16362 | ||
5663e321 | 16363 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
16364 | case R_PPC64_PLTSEQ: |
16365 | if (unresolved_reloc) | |
16366 | { | |
16367 | unresolved_reloc = FALSE; | |
16368 | goto nop_it; | |
16369 | } | |
16370 | break; | |
16371 | ||
5663e321 AM |
16372 | case R_PPC64_PLT_PCREL34_NOTOC: |
16373 | if (!unresolved_reloc) | |
16374 | htab->notoc_plt = 1; | |
16375 | /* Fall through. */ | |
16376 | case R_PPC64_PLT_PCREL34: | |
16377 | if (unresolved_reloc) | |
16378 | { | |
16379 | bfd_byte *p = contents + rel->r_offset; | |
16380 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
16381 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
16382 | unresolved_reloc = FALSE; | |
16383 | goto copy_reloc; | |
16384 | } | |
16385 | break; | |
16386 | ||
23cedd1d AM |
16387 | case R_PPC64_PLT16_HA: |
16388 | if (unresolved_reloc) | |
16389 | { | |
16390 | unresolved_reloc = FALSE; | |
16391 | goto nop_it; | |
16392 | } | |
16393 | /* Fall through. */ | |
67f0cbdb AM |
16394 | case R_PPC64_GOT_TLSLD16_HA: |
16395 | case R_PPC64_GOT_TLSGD16_HA: | |
16396 | case R_PPC64_GOT_TPREL16_HA: | |
16397 | case R_PPC64_GOT_DTPREL16_HA: | |
16398 | case R_PPC64_GOT16_HA: | |
16399 | case R_PPC64_TOC16_HA: | |
98528052 | 16400 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16401 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 16402 | { |
23cedd1d AM |
16403 | bfd_byte *p; |
16404 | nop_it: | |
16405 | p = contents + (rel->r_offset & ~3); | |
98528052 | 16406 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 16407 | goto copy_reloc; |
98528052 | 16408 | } |
67f0cbdb AM |
16409 | break; |
16410 | ||
23cedd1d AM |
16411 | case R_PPC64_PLT16_LO: |
16412 | case R_PPC64_PLT16_LO_DS: | |
16413 | if (unresolved_reloc) | |
16414 | { | |
16415 | unresolved_reloc = FALSE; | |
16416 | goto nop_it; | |
16417 | } | |
16418 | /* Fall through. */ | |
67f0cbdb AM |
16419 | case R_PPC64_GOT_TLSLD16_LO: |
16420 | case R_PPC64_GOT_TLSGD16_LO: | |
16421 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16422 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16423 | case R_PPC64_GOT16_LO: | |
16424 | case R_PPC64_GOT16_LO_DS: | |
16425 | case R_PPC64_TOC16_LO: | |
16426 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 16427 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16428 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
16429 | { |
16430 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16431 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16432 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
16433 | { |
16434 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 16435 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
16436 | insn |= (14u << 26) | (2 << 16); |
16437 | } | |
16438 | else | |
67f0cbdb | 16439 | { |
98528052 AM |
16440 | insn &= ~(0x1f << 16); |
16441 | insn |= 2 << 16; | |
67f0cbdb | 16442 | } |
560c8763 | 16443 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
16444 | } |
16445 | break; | |
9a23f96e AM |
16446 | |
16447 | case R_PPC64_TPREL16_HA: | |
16448 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16449 | { | |
16450 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16451 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16452 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) |
9a23f96e AM |
16453 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) |
16454 | /* xgettext:c-format */ | |
16455 | info->callbacks->minfo | |
16456 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
16457 | input_bfd, input_section, rel->r_offset, |
16458 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 16459 | else |
d830549d AM |
16460 | { |
16461 | bfd_put_32 (input_bfd, NOP, p); | |
16462 | goto copy_reloc; | |
16463 | } | |
9a23f96e AM |
16464 | } |
16465 | break; | |
16466 | ||
16467 | case R_PPC64_TPREL16_LO: | |
16468 | case R_PPC64_TPREL16_LO_DS: | |
16469 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16470 | { | |
16471 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16472 | insn = bfd_get_32 (input_bfd, p); | |
16473 | insn &= ~(0x1f << 16); | |
16474 | insn |= 13 << 16; | |
16475 | bfd_put_32 (input_bfd, insn, p); | |
16476 | } | |
16477 | break; | |
67f0cbdb AM |
16478 | } |
16479 | ||
65f38f15 AM |
16480 | /* Do any further special processing. */ |
16481 | switch (r_type) | |
16482 | { | |
16483 | default: | |
16484 | break; | |
16485 | ||
25f23106 | 16486 | case R_PPC64_REL16_HA: |
4a969973 AM |
16487 | case R_PPC64_REL16_HIGHA: |
16488 | case R_PPC64_REL16_HIGHERA: | |
16489 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 16490 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
16491 | case R_PPC64_ADDR16_HA: |
16492 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16493 | case R_PPC64_ADDR16_HIGHERA: |
16494 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
16495 | case R_PPC64_TOC16_HA: |
16496 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 16497 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 16498 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 16499 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 16500 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
16501 | case R_PPC64_DTPREL16_HA: |
16502 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 16503 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 16504 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
16505 | /* It's just possible that this symbol is a weak symbol |
16506 | that's not actually defined anywhere. In that case, | |
16507 | 'sec' would be NULL, and we should leave the symbol | |
16508 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
16509 | if (sec == NULL) |
16510 | break; | |
1a0670f3 | 16511 | /* Fall through. */ |
5c5f6e17 AM |
16512 | |
16513 | case R_PPC64_GOT16_HA: | |
16514 | case R_PPC64_PLTGOT16_HA: | |
16515 | case R_PPC64_PLT16_HA: | |
16516 | case R_PPC64_GOT_TLSGD16_HA: | |
16517 | case R_PPC64_GOT_TLSLD16_HA: | |
16518 | case R_PPC64_GOT_TPREL16_HA: | |
16519 | case R_PPC64_GOT_DTPREL16_HA: | |
16520 | /* Add 0x10000 if sign bit in 0:15 is set. | |
16521 | Bits 0:15 are not used. */ | |
16522 | addend += 0x8000; | |
65f38f15 AM |
16523 | break; |
16524 | ||
5663e321 AM |
16525 | case R_PPC64_D34_HA30: |
16526 | case R_PPC64_ADDR16_HIGHERA34: | |
16527 | case R_PPC64_ADDR16_HIGHESTA34: | |
16528 | case R_PPC64_REL16_HIGHERA34: | |
16529 | case R_PPC64_REL16_HIGHESTA34: | |
16530 | if (sec != NULL) | |
16531 | addend += 1ULL << 33; | |
16532 | break; | |
16533 | ||
65f38f15 AM |
16534 | case R_PPC64_ADDR16_DS: |
16535 | case R_PPC64_ADDR16_LO_DS: | |
16536 | case R_PPC64_GOT16_DS: | |
16537 | case R_PPC64_GOT16_LO_DS: | |
16538 | case R_PPC64_PLT16_LO_DS: | |
16539 | case R_PPC64_SECTOFF_DS: | |
16540 | case R_PPC64_SECTOFF_LO_DS: | |
16541 | case R_PPC64_TOC16_DS: | |
16542 | case R_PPC64_TOC16_LO_DS: | |
16543 | case R_PPC64_PLTGOT16_DS: | |
16544 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
16545 | case R_PPC64_GOT_TPREL16_DS: |
16546 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16547 | case R_PPC64_GOT_DTPREL16_DS: | |
16548 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16549 | case R_PPC64_TPREL16_DS: | |
16550 | case R_PPC64_TPREL16_LO_DS: | |
16551 | case R_PPC64_DTPREL16_DS: | |
16552 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
16553 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
16554 | mask = 3; | |
a680de9a PB |
16555 | /* If this reloc is against an lq, lxv, or stxv insn, then |
16556 | the value must be a multiple of 16. This is somewhat of | |
16557 | a hack, but the "correct" way to do this by defining _DQ | |
16558 | forms of all the _DS relocs bloats all reloc switches in | |
16559 | this file. It doesn't make much sense to use these | |
16560 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
16561 | if ((insn & (0x3fu << 26)) == (56u << 26) |
16562 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 16563 | mask = 15; |
a680de9a PB |
16564 | relocation += addend; |
16565 | addend = insn & (mask ^ 3); | |
16566 | if ((relocation & mask) != 0) | |
65f38f15 | 16567 | { |
a680de9a | 16568 | relocation ^= relocation & mask; |
25f53a85 | 16569 | info->callbacks->einfo |
695344c0 | 16570 | /* xgettext:c-format */ |
174d0a74 | 16571 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 16572 | input_bfd, input_section, rel->r_offset, |
d830549d | 16573 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 16574 | mask + 1); |
65f38f15 | 16575 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16576 | ret = FALSE; |
c316a17c | 16577 | goto copy_reloc; |
65f38f15 AM |
16578 | } |
16579 | break; | |
5bd4f169 AM |
16580 | } |
16581 | ||
239e1f3a AM |
16582 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
16583 | because such sections are not SEC_ALLOC and thus ld.so will | |
16584 | not process them. */ | |
d830549d | 16585 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 16586 | if (unresolved_reloc |
239e1f3a | 16587 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
16588 | && h->elf.def_dynamic) |
16589 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
16590 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 16591 | { |
25f53a85 | 16592 | info->callbacks->einfo |
695344c0 | 16593 | /* xgettext:c-format */ |
c1c8c1ef | 16594 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 16595 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 16596 | howto->name, |
039b3fef | 16597 | h->elf.root.root.string); |
b34976b6 | 16598 | ret = FALSE; |
9c07fe7c | 16599 | } |
5bd4f169 | 16600 | |
b80eed39 AM |
16601 | /* 16-bit fields in insns mostly have signed values, but a |
16602 | few insns have 16-bit unsigned values. Really, we should | |
16603 | have different reloc types. */ | |
16604 | if (howto->complain_on_overflow != complain_overflow_dont | |
16605 | && howto->dst_mask == 0xffff | |
16606 | && (input_section->flags & SEC_CODE) != 0) | |
16607 | { | |
16608 | enum complain_overflow complain = complain_overflow_signed; | |
16609 | ||
16610 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 16611 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
16612 | complain = complain_overflow_bitfield; |
16613 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
16614 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
16615 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
16616 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
16617 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
16618 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
16619 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
16620 | complain = complain_overflow_unsigned; |
16621 | if (howto->complain_on_overflow != complain) | |
16622 | { | |
16623 | alt_howto = *howto; | |
16624 | alt_howto.complain_on_overflow = complain; | |
16625 | howto = &alt_howto; | |
16626 | } | |
16627 | } | |
16628 | ||
5663e321 | 16629 | switch (r_type) |
a680de9a | 16630 | { |
5663e321 AM |
16631 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
16632 | case R_PPC64_D34: | |
16633 | case R_PPC64_D34_LO: | |
16634 | case R_PPC64_D34_HI30: | |
16635 | case R_PPC64_D34_HA30: | |
16636 | case R_PPC64_PCREL34: | |
16637 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
16638 | case R_PPC64_TPREL34: |
16639 | case R_PPC64_DTPREL34: | |
16640 | case R_PPC64_GOT_TLSGD34: | |
16641 | case R_PPC64_GOT_TLSLD34: | |
16642 | case R_PPC64_GOT_TPREL34: | |
16643 | case R_PPC64_GOT_DTPREL34: | |
5663e321 AM |
16644 | case R_PPC64_PLT_PCREL34: |
16645 | case R_PPC64_PLT_PCREL34_NOTOC: | |
16646 | case R_PPC64_D28: | |
16647 | case R_PPC64_PCREL28: | |
16648 | if (rel->r_offset + 8 > input_section->size) | |
16649 | r = bfd_reloc_outofrange; | |
16650 | else | |
16651 | { | |
5663e321 AM |
16652 | relocation += addend; |
16653 | if (howto->pc_relative) | |
16654 | relocation -= (rel->r_offset | |
16655 | + input_section->output_offset | |
16656 | + input_section->output_section->vma); | |
16657 | relocation >>= howto->rightshift; | |
16658 | ||
16659 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16660 | pinsn <<= 32; | |
16661 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
16662 | ||
16663 | pinsn &= ~howto->dst_mask; | |
16664 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
16665 | & howto->dst_mask); | |
16666 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
16667 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
16668 | r = bfd_reloc_ok; | |
16669 | if (howto->complain_on_overflow == complain_overflow_signed | |
16670 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
16671 | >= 1ULL << howto->bitsize)) | |
16672 | r = bfd_reloc_overflow; | |
16673 | } | |
16674 | break; | |
16675 | ||
16676 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
16677 | if (rel->r_offset + 4 > input_section->size) |
16678 | r = bfd_reloc_outofrange; | |
16679 | else | |
16680 | { | |
16681 | relocation += addend; | |
16682 | relocation -= (rel->r_offset | |
16683 | + input_section->output_offset | |
16684 | + input_section->output_section->vma); | |
3de43e7b | 16685 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
16686 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
16687 | insn &= ~0x1fffc1; | |
3de43e7b | 16688 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
16689 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
16690 | r = bfd_reloc_ok; | |
3de43e7b | 16691 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
16692 | r = bfd_reloc_overflow; |
16693 | } | |
5663e321 AM |
16694 | break; |
16695 | ||
16696 | default: | |
16697 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
16698 | contents, rel->r_offset, | |
16699 | relocation, addend); | |
a680de9a | 16700 | } |
5bd4f169 | 16701 | |
ef60b7ff | 16702 | if (r != bfd_reloc_ok) |
5bd4f169 | 16703 | { |
bc30df16 | 16704 | char *more_info = NULL; |
b80eed39 | 16705 | const char *reloc_name = howto->name; |
bc30df16 AM |
16706 | |
16707 | if (reloc_dest != DEST_NORMAL) | |
16708 | { | |
16709 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
16710 | if (more_info != NULL) | |
16711 | { | |
16712 | strcpy (more_info, reloc_name); | |
16713 | strcat (more_info, (reloc_dest == DEST_OPD | |
16714 | ? " (OPD)" : " (stub)")); | |
16715 | reloc_name = more_info; | |
16716 | } | |
16717 | } | |
16718 | ||
cd27b276 | 16719 | if (r == bfd_reloc_overflow) |
5bd4f169 | 16720 | { |
8131c122 AM |
16721 | /* On code like "if (foo) foo();" don't report overflow |
16722 | on a branch to zero when foo is undefined. */ | |
16723 | if (!warned | |
16724 | && (reloc_dest == DEST_STUB | |
16725 | || !(h != NULL | |
16726 | && (h->elf.root.type == bfd_link_hash_undefweak | |
16727 | || h->elf.root.type == bfd_link_hash_undefined) | |
16728 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
16729 | info->callbacks->reloc_overflow (info, &h->elf.root, |
16730 | sym_name, reloc_name, | |
16731 | orig_rel.r_addend, | |
16732 | input_bfd, input_section, | |
16733 | rel->r_offset); | |
ef60b7ff AM |
16734 | } |
16735 | else | |
16736 | { | |
25f53a85 | 16737 | info->callbacks->einfo |
695344c0 | 16738 | /* xgettext:c-format */ |
c1c8c1ef | 16739 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 16740 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 16741 | reloc_name, sym_name, (int) r); |
b34976b6 | 16742 | ret = FALSE; |
ef60b7ff | 16743 | } |
bc30df16 AM |
16744 | if (more_info != NULL) |
16745 | free (more_info); | |
5bd4f169 | 16746 | } |
c316a17c AM |
16747 | copy_reloc: |
16748 | if (wrel != rel) | |
16749 | *wrel = *rel; | |
16750 | } | |
16751 | ||
16752 | if (wrel != rel) | |
16753 | { | |
16754 | Elf_Internal_Shdr *rel_hdr; | |
16755 | size_t deleted = rel - wrel; | |
16756 | ||
16757 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
16758 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16759 | if (rel_hdr->sh_size == 0) | |
16760 | { | |
16761 | /* It is too late to remove an empty reloc section. Leave | |
16762 | one NONE reloc. | |
16763 | ??? What is wrong with an empty section??? */ | |
16764 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
16765 | deleted -= 1; | |
16766 | } | |
16767 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
16768 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16769 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
16770 | } |
16771 | ||
645ea6a9 AM |
16772 | /* If we're emitting relocations, then shortly after this function |
16773 | returns, reloc offsets and addends for this section will be | |
16774 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
16775 | file rather than the input. Save a copy of the relocs for |
16776 | opd_entry_value. */ | |
0e1862bb | 16777 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
16778 | { |
16779 | bfd_size_type amt; | |
16780 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
16781 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
16782 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
16783 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
16784 | if (rel == NULL) |
16785 | return FALSE; | |
16786 | memcpy (rel, relocs, amt); | |
16787 | } | |
5bd4f169 AM |
16788 | return ret; |
16789 | } | |
16790 | ||
754021d0 AM |
16791 | /* Adjust the value of any local symbols in opd sections. */ |
16792 | ||
6e0b88f1 | 16793 | static int |
754021d0 AM |
16794 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16795 | const char *name ATTRIBUTE_UNUSED, | |
16796 | Elf_Internal_Sym *elfsym, | |
16797 | asection *input_sec, | |
16798 | struct elf_link_hash_entry *h) | |
16799 | { | |
74f0fb50 AM |
16800 | struct _opd_sec_data *opd; |
16801 | long adjust; | |
754021d0 AM |
16802 | bfd_vma value; |
16803 | ||
4025353c | 16804 | if (h != NULL) |
6e0b88f1 | 16805 | return 1; |
4025353c | 16806 | |
74f0fb50 AM |
16807 | opd = get_opd_info (input_sec); |
16808 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16809 | return 1; |
754021d0 AM |
16810 | |
16811 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16812 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16813 | value -= input_sec->output_section->vma; |
16814 | ||
51aecdc5 | 16815 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16816 | if (adjust == -1) |
6e0b88f1 AM |
16817 | return 2; |
16818 | ||
16819 | elfsym->st_value += adjust; | |
16820 | return 1; | |
754021d0 AM |
16821 | } |
16822 | ||
5bd4f169 AM |
16823 | /* Finish up dynamic symbol handling. We set the contents of various |
16824 | dynamic sections here. */ | |
16825 | ||
b34976b6 | 16826 | static bfd_boolean |
4ce794b7 AM |
16827 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16828 | struct bfd_link_info *info, | |
16829 | struct elf_link_hash_entry *h, | |
4aef7643 | 16830 | Elf_Internal_Sym *sym) |
5bd4f169 | 16831 | { |
65f38f15 | 16832 | struct ppc_link_hash_table *htab; |
8387904d | 16833 | struct plt_entry *ent; |
5bd4f169 | 16834 | |
65f38f15 | 16835 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16836 | if (htab == NULL) |
16837 | return FALSE; | |
5bd4f169 | 16838 | |
49c09209 AM |
16839 | if (!htab->opd_abi && !h->def_regular) |
16840 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16841 | if (ent->plt.offset != (bfd_vma) -1) | |
16842 | { | |
16843 | /* Mark the symbol as undefined, rather than as | |
16844 | defined in glink. Leave the value if there were | |
16845 | any relocations where pointer equality matters | |
16846 | (this is a clue for the dynamic linker, to make | |
16847 | function pointer comparisons work between an | |
16848 | application and shared library), otherwise set it | |
16849 | to zero. */ | |
16850 | sym->st_shndx = SHN_UNDEF; | |
16851 | if (!h->pointer_equality_needed) | |
16852 | sym->st_value = 0; | |
16853 | else if (!h->ref_regular_nonweak) | |
16854 | { | |
16855 | /* This breaks function pointer comparisons, but | |
16856 | that is better than breaking tests for a NULL | |
16857 | function pointer. */ | |
16858 | sym->st_value = 0; | |
16859 | } | |
16860 | break; | |
16861 | } | |
5bd4f169 | 16862 | |
1bdd8fac AM |
16863 | if (h->needs_copy |
16864 | && (h->root.type == bfd_link_hash_defined | |
16865 | || h->root.type == bfd_link_hash_defweak) | |
16866 | && (h->root.u.def.section == htab->elf.sdynbss | |
16867 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 16868 | { |
65f38f15 | 16869 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16870 | Elf_Internal_Rela rela; |
5474d94f | 16871 | asection *srel; |
49c09209 | 16872 | bfd_byte *loc; |
5bd4f169 | 16873 | |
1bdd8fac | 16874 | if (h->dynindx == -1) |
65f38f15 | 16875 | abort (); |
5bd4f169 AM |
16876 | |
16877 | rela.r_offset = (h->root.u.def.value | |
16878 | + h->root.u.def.section->output_section->vma | |
16879 | + h->root.u.def.section->output_offset); | |
16880 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16881 | rela.r_addend = 0; | |
afbf7e8e | 16882 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16883 | srel = htab->elf.sreldynrelro; |
16884 | else | |
16885 | srel = htab->elf.srelbss; | |
16886 | loc = srel->contents; | |
16887 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16888 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16889 | } |
16890 | ||
b34976b6 | 16891 | return TRUE; |
5bd4f169 AM |
16892 | } |
16893 | ||
65f38f15 AM |
16894 | /* Used to decide how to sort relocs in an optimal manner for the |
16895 | dynamic linker, before writing them out. */ | |
16896 | ||
16897 | static enum elf_reloc_type_class | |
7e612e98 AM |
16898 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16899 | const asection *rel_sec, | |
16900 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16901 | { |
04c9666a | 16902 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16903 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16904 | ||
33e44f2e | 16905 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16906 | return reloc_class_ifunc; |
a33d1f77 | 16907 | |
4ce794b7 | 16908 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16909 | switch (r_type) |
65f38f15 AM |
16910 | { |
16911 | case R_PPC64_RELATIVE: | |
16912 | return reloc_class_relative; | |
16913 | case R_PPC64_JMP_SLOT: | |
16914 | return reloc_class_plt; | |
16915 | case R_PPC64_COPY: | |
16916 | return reloc_class_copy; | |
16917 | default: | |
16918 | return reloc_class_normal; | |
16919 | } | |
16920 | } | |
16921 | ||
5bd4f169 AM |
16922 | /* Finish up the dynamic sections. */ |
16923 | ||
b34976b6 | 16924 | static bfd_boolean |
4ce794b7 AM |
16925 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16926 | struct bfd_link_info *info) | |
5bd4f169 | 16927 | { |
65f38f15 AM |
16928 | struct ppc_link_hash_table *htab; |
16929 | bfd *dynobj; | |
5bd4f169 | 16930 | asection *sdyn; |
5bd4f169 | 16931 | |
65f38f15 | 16932 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16933 | if (htab == NULL) |
16934 | return FALSE; | |
16935 | ||
65f38f15 | 16936 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16937 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16938 | |
65f38f15 | 16939 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16940 | { |
5bd4f169 AM |
16941 | Elf64_External_Dyn *dyncon, *dynconend; |
16942 | ||
33e44f2e | 16943 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16944 | abort (); |
5bd4f169 AM |
16945 | |
16946 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16947 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16948 | for (; dyncon < dynconend; dyncon++) |
16949 | { | |
16950 | Elf_Internal_Dyn dyn; | |
19397422 | 16951 | asection *s; |
5bd4f169 AM |
16952 | |
16953 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16954 | ||
16955 | switch (dyn.d_tag) | |
16956 | { | |
65f38f15 AM |
16957 | default: |
16958 | continue; | |
5bd4f169 | 16959 | |
5d1634d7 | 16960 | case DT_PPC64_GLINK: |
4ce794b7 | 16961 | s = htab->glink; |
6348e046 | 16962 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16963 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16964 | of glink rather than the first entry point, which is | |
16965 | what ld.so needs, and now have a bigger stub to | |
16966 | support automatic multiple TOCs. */ | |
9e390558 | 16967 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16968 | break; |
16969 | ||
19397422 AM |
16970 | case DT_PPC64_OPD: |
16971 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16972 | if (s == NULL) |
16973 | continue; | |
16974 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16975 | break; |
16976 | ||
e8910a83 | 16977 | case DT_PPC64_OPT: |
5663e321 AM |
16978 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
16979 | || htab->notoc_plt) | |
e8910a83 | 16980 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
16981 | if (htab->has_plt_localentry0) |
16982 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16983 | break; |
16984 | ||
19397422 AM |
16985 | case DT_PPC64_OPDSZ: |
16986 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16987 | if (s == NULL) |
16988 | continue; | |
eea6121a | 16989 | dyn.d_un.d_val = s->size; |
19397422 AM |
16990 | break; |
16991 | ||
65f38f15 | 16992 | case DT_PLTGOT: |
33e44f2e | 16993 | s = htab->elf.splt; |
6348e046 | 16994 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16995 | break; |
16996 | ||
16997 | case DT_JMPREL: | |
33e44f2e | 16998 | s = htab->elf.srelplt; |
6348e046 | 16999 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 17000 | break; |
5bd4f169 | 17001 | |
65f38f15 | 17002 | case DT_PLTRELSZ: |
33e44f2e | 17003 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 17004 | break; |
82e66161 AM |
17005 | |
17006 | case DT_TEXTREL: | |
17007 | if (htab->local_ifunc_resolver) | |
17008 | info->callbacks->einfo | |
17009 | (_("%X%P: text relocations and GNU indirect " | |
17010 | "functions will result in a segfault at runtime\n")); | |
17011 | else if (htab->maybe_local_ifunc_resolver) | |
17012 | info->callbacks->einfo | |
17013 | (_("%P: warning: text relocations and GNU indirect " | |
17014 | "functions may result in a segfault at runtime\n")); | |
17015 | continue; | |
5bd4f169 | 17016 | } |
5bd4f169 | 17017 | |
65f38f15 | 17018 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 17019 | } |
5bd4f169 AM |
17020 | } |
17021 | ||
6528b6eb AM |
17022 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
17023 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17024 | { |
17025 | /* Fill in the first entry in the global offset table. | |
17026 | We use it to hold the link-time TOCbase. */ | |
17027 | bfd_put_64 (output_bfd, | |
60ee0d4a | 17028 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 17029 | htab->elf.sgot->contents); |
5d1634d7 AM |
17030 | |
17031 | /* Set .got entry size. */ | |
2cdcc330 AM |
17032 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
17033 | = 8; | |
5d1634d7 AM |
17034 | } |
17035 | ||
6528b6eb AM |
17036 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
17037 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17038 | { |
17039 | /* Set .plt entry size. */ | |
33e44f2e | 17040 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 17041 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
17042 | } |
17043 | ||
84f5d08e AM |
17044 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
17045 | brlt ourselves if emitrelocations. */ | |
17046 | if (htab->brlt != NULL | |
17047 | && htab->brlt->reloc_count != 0 | |
17048 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17049 | htab->brlt, | |
d4730f92 | 17050 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
17051 | elf_section_data (htab->brlt)->relocs, |
17052 | NULL)) | |
17053 | return FALSE; | |
17054 | ||
176a0d42 AM |
17055 | if (htab->glink != NULL |
17056 | && htab->glink->reloc_count != 0 | |
17057 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17058 | htab->glink, | |
d4730f92 | 17059 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
17060 | elf_section_data (htab->glink)->relocs, |
17061 | NULL)) | |
17062 | return FALSE; | |
17063 | ||
da44f4e5 | 17064 | |
df136d64 AM |
17065 | if (htab->glink_eh_frame != NULL |
17066 | && htab->glink_eh_frame->size != 0 | |
17067 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
17068 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
17069 | htab->glink_eh_frame, | |
17070 | htab->glink_eh_frame->contents)) | |
17071 | return FALSE; | |
58d180e8 | 17072 | |
e717da7e | 17073 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
17074 | since we didn't add them to DYNOBJ. We know dynobj is the first |
17075 | bfd. */ | |
c72f2fb2 | 17076 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
17077 | { |
17078 | asection *s; | |
7b53ace3 | 17079 | |
0c8d6e5c | 17080 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
17081 | continue; |
17082 | ||
e717da7e AM |
17083 | s = ppc64_elf_tdata (dynobj)->got; |
17084 | if (s != NULL | |
eea6121a | 17085 | && s->size != 0 |
e717da7e AM |
17086 | && s->output_section != bfd_abs_section_ptr |
17087 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17088 | s->contents, s->output_offset, | |
eea6121a | 17089 | s->size)) |
e717da7e AM |
17090 | return FALSE; |
17091 | s = ppc64_elf_tdata (dynobj)->relgot; | |
17092 | if (s != NULL | |
eea6121a | 17093 | && s->size != 0 |
e717da7e AM |
17094 | && s->output_section != bfd_abs_section_ptr |
17095 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17096 | s->contents, s->output_offset, | |
eea6121a | 17097 | s->size)) |
e717da7e AM |
17098 | return FALSE; |
17099 | } | |
f6c52c13 | 17100 | |
b34976b6 | 17101 | return TRUE; |
5bd4f169 AM |
17102 | } |
17103 | ||
5bd4f169 | 17104 | #include "elf64-target.h" |
7b8e7dad AM |
17105 | |
17106 | /* FreeBSD support */ | |
17107 | ||
17108 | #undef TARGET_LITTLE_SYM | |
17109 | #undef TARGET_LITTLE_NAME | |
17110 | ||
17111 | #undef TARGET_BIG_SYM | |
6d00b590 | 17112 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
17113 | #undef TARGET_BIG_NAME |
17114 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
17115 | ||
17116 | #undef ELF_OSABI | |
17117 | #define ELF_OSABI ELFOSABI_FREEBSD | |
17118 | ||
17119 | #undef elf64_bed | |
17120 | #define elf64_bed elf64_powerpc_fbsd_bed | |
17121 | ||
17122 | #include "elf64-target.h" |