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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 |
bf577467 | 128 | #define elf_backend_section_flags ppc64_elf_section_flags |
6911b7dc | 129 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 130 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 131 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 132 | |
5bd4f169 AM |
133 | /* The name of the dynamic interpreter. This is put in the .interp |
134 | section. */ | |
135 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
136 | ||
137 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 138 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 139 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
140 | |
141 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 142 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 143 | |
a078d95a AM |
144 | /* Offsets to some stack save slots. */ |
145 | #define STK_LR 16 | |
146 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 147 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
148 | CR save slot. Used only by optimised __tls_get_addr call stub, |
149 | relying on __tls_get_addr_opt not saving CR.. */ | |
150 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
151 | ||
5bd4f169 | 152 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 153 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
154 | /* TOC base alignment. */ |
155 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
156 | |
157 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
158 | #define TP_OFFSET 0x7000 | |
159 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 160 | |
ad8e1ba5 AM |
161 | /* .plt call stub instructions. The normal stub is like this, but |
162 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 163 | insert an addi to adjust r11. */ |
a078d95a | 164 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
165 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
166 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
167 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
168 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
169 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
170 | #define BCTR 0x4e800420 /* bctr */ |
171 | ||
07d6d2b8 | 172 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
173 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
174 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
175 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
176 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
177 | ||
178 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
179 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
180 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
181 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
182 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
183 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
184 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 185 | |
71a39c98 | 186 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 187 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 188 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 189 | |
07d6d2b8 AM |
190 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
191 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
192 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 193 | |
04bdff6a | 194 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 195 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 196 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 197 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
198 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
199 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 200 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 201 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 202 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 203 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 204 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 205 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 206 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
207 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
208 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
209 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
210 | #define PADDI_R12_PC 0x0610000039800000ULL |
211 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 212 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 213 | |
9e390558 AM |
214 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
215 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 216 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
217 | /* 0: */ |
218 | /* .quad plt0-1f */ | |
219 | /* __glink: */ | |
220 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
221 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
222 | /* 1: */ | |
223 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 224 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 225 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
226 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
227 | /* ld %12,0(%11) */ | |
228 | /* ld %2,8(%11) */ | |
229 | /* mtctr %12 */ | |
230 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 231 | /* bctr */ |
b9e5796b AM |
232 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
233 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
234 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
235 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
236 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
237 | |
238 | /* Pad with this. */ | |
239 | #define NOP 0x60000000 | |
240 | ||
721956f4 AM |
241 | /* Some other nops. */ |
242 | #define CROR_151515 0x4def7b82 | |
243 | #define CROR_313131 0x4ffffb82 | |
244 | ||
cedb70c5 | 245 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
246 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
247 | #define B_DOT 0x48000000 /* b . */ | |
248 | ||
249 | /* After that, we need two instructions to load the index, followed by | |
250 | a branch. */ | |
251 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 252 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 253 | |
deb0e272 AM |
254 | /* Instructions used by the save and restore reg functions. */ |
255 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
256 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
257 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
258 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
259 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
260 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
261 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
262 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
263 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
264 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
265 | #define BLR 0x4e800020 /* blr */ |
266 | ||
41bd81ab AM |
267 | /* Since .opd is an array of descriptors and each entry will end up |
268 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
269 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 270 | relocate .opd without reloc entries. */ |
41bd81ab AM |
271 | #ifndef NO_OPD_RELOCS |
272 | #define NO_OPD_RELOCS 0 | |
273 | #endif | |
810d4e75 | 274 | |
a4b6fadd AM |
275 | #ifndef ARRAY_SIZE |
276 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
277 | #endif | |
278 | ||
810d4e75 AM |
279 | static inline int |
280 | abiversion (bfd *abfd) | |
281 | { | |
282 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
283 | } | |
284 | ||
285 | static inline void | |
286 | set_abiversion (bfd *abfd, int ver) | |
287 | { | |
288 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
289 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
290 | } | |
5bd4f169 AM |
291 | \f |
292 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
293 | /* Like other ELF RELA targets that don't apply multiple |
294 | field-altering relocations to the same localation, src_mask is | |
295 | always zero and pcrel_offset is the same as pc_relative. | |
296 | PowerPC can always use a zero bitpos, even when the field is not at | |
297 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
298 | and bitpos=2 which matches the ABI description, or as we do here, | |
299 | rightshift=0, bitsize=26 and bitpos=0. */ | |
300 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
301 | complain, special_func) \ | |
302 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
303 | complain_overflow_ ## complain, special_func, \ | |
304 | #type, FALSE, 0, mask, pc_relative) | |
305 | ||
04c9666a | 306 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 307 | |
f3185997 NC |
308 | static reloc_howto_type ppc64_elf_howto_raw[] = |
309 | { | |
5bd4f169 | 310 | /* This reloc does nothing. */ |
46807bf4 AM |
311 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
312 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
313 | |
314 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
315 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
316 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
317 | |
318 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
319 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
320 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
321 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
322 | |
323 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
324 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
325 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
326 | |
327 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
328 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
329 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
330 | |
331 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
332 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
333 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
334 | |
335 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
336 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
337 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
338 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
339 | |
340 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
341 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
342 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
343 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
344 | |
345 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
346 | indicate that the branch is expected to be taken. The lower two | |
347 | bits must be zero. */ | |
46807bf4 AM |
348 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
349 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
350 | |
351 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
352 | indicate that the branch is not expected to be taken. The lower | |
353 | two bits must be zero. */ | |
46807bf4 AM |
354 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
355 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
356 | |
357 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
358 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
359 | ppc64_elf_branch_reloc), | |
5bd4f169 | 360 | |
05d0e962 | 361 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
362 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
363 | ppc64_elf_branch_reloc), | |
05d0e962 | 364 | |
5bd4f169 | 365 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
366 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
367 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
368 | |
369 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
370 | the branch is expected to be taken. The lower two bits must be | |
371 | zero. */ | |
46807bf4 AM |
372 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
373 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
374 | |
375 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
376 | the branch is not expected to be taken. The lower two bits must | |
377 | be zero. */ | |
46807bf4 AM |
378 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
379 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
380 | |
381 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
382 | symbol. */ | |
46807bf4 AM |
383 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
384 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
385 | |
386 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
387 | the symbol. */ | |
46807bf4 AM |
388 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
389 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
390 | |
391 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
392 | the symbol. */ | |
46807bf4 AM |
393 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
394 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
395 | |
396 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
397 | the symbol. */ | |
46807bf4 AM |
398 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
399 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
400 | |
401 | /* This is used only by the dynamic linker. The symbol should exist | |
402 | both in the object being run and in some shared library. The | |
403 | dynamic linker copies the data addressed by the symbol from the | |
404 | shared library into the object, because the object being | |
405 | run has to have the data at some particular address. */ | |
46807bf4 AM |
406 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
407 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
408 | |
409 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
410 | entries. */ | |
46807bf4 AM |
411 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
412 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
413 | |
414 | /* Created by the link editor. Marks a procedure linkage table | |
415 | entry for a symbol. */ | |
46807bf4 AM |
416 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
417 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
418 | |
419 | /* Used only by the dynamic linker. When the object is run, this | |
420 | doubleword64 is set to the load address of the object, plus the | |
421 | addend. */ | |
46807bf4 AM |
422 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
423 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
424 | |
425 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
426 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
427 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
428 | |
429 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
430 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
431 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
432 | |
433 | /* 32-bit PC relative. */ | |
46807bf4 AM |
434 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
435 | bfd_elf_generic_reloc), | |
5bd4f169 | 436 | |
10ed1bba | 437 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
438 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
439 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
440 | |
441 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
442 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
443 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
444 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
445 | |
446 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
447 | the symbol. */ | |
46807bf4 AM |
448 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
449 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
450 | |
451 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
452 | the symbol. */ | |
46807bf4 AM |
453 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
454 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
455 | |
456 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
457 | the symbol. */ | |
46807bf4 AM |
458 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
459 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 460 | |
c061c2d8 | 461 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
462 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
463 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 464 | |
c061c2d8 | 465 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
466 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
467 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
468 | |
469 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
470 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
471 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
472 | |
473 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
474 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
475 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 476 | |
04c9666a | 477 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
478 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
479 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
480 | |
481 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
482 | ||
483 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
484 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
485 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
486 | |
487 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
488 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
489 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
490 | |
491 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
492 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
493 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
494 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
495 | |
496 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
497 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
498 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
499 | |
500 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
501 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
502 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
503 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
504 | |
505 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
506 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
507 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
508 | |
509 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
510 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
511 | bfd_elf_generic_reloc), | |
5bd4f169 | 512 | |
cedb70c5 | 513 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
514 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
515 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
516 | |
517 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
518 | table. */ | |
519 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
520 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
521 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
522 | |
523 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 524 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
525 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
526 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
527 | |
528 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 529 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
530 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
531 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
532 | |
533 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 534 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
535 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
536 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
537 | |
538 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
539 | contents of the low 16 bits, treated as a signed number, is | |
540 | negative. */ | |
5bd4f169 | 541 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
542 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
543 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
544 | |
545 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 546 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
547 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
548 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
549 | |
550 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
551 | value to relocate may (!) refer to a PLT entry which the link | |
552 | editor (a) may replace with the symbol value. If the link editor | |
553 | is unable to fully resolve the symbol, it may (b) create a PLT | |
554 | entry and store the address to the new PLT entry in the GOT. | |
555 | This permits lazy resolution of function symbols at run time. | |
556 | The link editor may also skip all of this and just (c) emit a | |
557 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
558 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
559 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
560 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
561 | |
562 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
563 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
564 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
565 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
566 | |
567 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
568 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
569 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
570 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
571 | |
572 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
573 | 1 if the contents of the low 16 bits, treated as a signed number, | |
574 | is negative. */ | |
575 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
576 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
577 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
578 | |
579 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
580 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
581 | bfd_elf_generic_reloc), | |
411e1bfb AM |
582 | |
583 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
584 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
585 | bfd_elf_generic_reloc), | |
411e1bfb AM |
586 | |
587 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
588 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
589 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
590 | |
591 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
592 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
593 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
594 | |
595 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
596 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
597 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
598 | |
599 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
600 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
601 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
602 | |
603 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
604 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
605 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
606 | |
607 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
608 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
609 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
610 | |
611 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
612 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
613 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
614 | |
615 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
616 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
617 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
618 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
619 | |
620 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
621 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
622 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
623 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 624 | |
727fc41e | 625 | /* Marker relocs for TLS. */ |
46807bf4 AM |
626 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
627 | bfd_elf_generic_reloc), | |
628 | ||
629 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
630 | bfd_elf_generic_reloc), | |
631 | ||
632 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
633 | bfd_elf_generic_reloc), | |
727fc41e | 634 | |
23cedd1d AM |
635 | /* Marker reloc for optimizing r2 save in prologue rather than on |
636 | each plt call stub. */ | |
46807bf4 AM |
637 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
638 | bfd_elf_generic_reloc), | |
3b421ab3 | 639 | |
23cedd1d | 640 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
641 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
642 | bfd_elf_generic_reloc), | |
643 | ||
644 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
645 | bfd_elf_generic_reloc), | |
23cedd1d | 646 | |
411e1bfb AM |
647 | /* Computes the load module index of the load module that contains the |
648 | definition of its TLS sym. */ | |
46807bf4 AM |
649 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
650 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
651 | |
652 | /* Computes a dtv-relative displacement, the difference between the value | |
653 | of sym+add and the base address of the thread-local storage block that | |
654 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
655 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
656 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
657 | |
658 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
659 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
660 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
661 | |
662 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
663 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
664 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
665 | |
666 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
667 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
668 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
669 | |
670 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
671 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
672 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
673 | |
674 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
675 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
676 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
677 | |
678 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
679 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
680 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
681 | |
682 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
683 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
684 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
685 | |
686 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
687 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
688 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
689 | |
690 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
691 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
692 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
693 | |
694 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
695 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
696 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
697 | |
698 | /* Computes a tp-relative displacement, the difference between the value of | |
699 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
700 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
701 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
702 | |
703 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
704 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
705 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
706 | |
707 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
708 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
709 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
710 | |
711 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
712 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
713 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
714 | |
715 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
716 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
717 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
718 | |
719 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
720 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
721 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
722 | |
723 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
724 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
725 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
726 | |
727 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
728 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
729 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
730 | |
731 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
732 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
733 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
734 | |
735 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
736 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
737 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
738 | |
739 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
740 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
741 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
742 | |
743 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
744 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
745 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
746 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
747 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 748 | |
411e1bfb | 749 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
750 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
751 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 752 | |
411e1bfb | 753 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
754 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
755 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 756 | |
411e1bfb | 757 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
758 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
759 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 760 | |
411e1bfb AM |
761 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
762 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
763 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
764 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
765 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 766 | |
411e1bfb | 767 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
768 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
769 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 770 | |
411e1bfb | 771 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
772 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
773 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 774 | |
411e1bfb | 775 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
776 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
777 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 778 | |
411e1bfb AM |
779 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
780 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
781 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
782 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 783 | |
411e1bfb | 784 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
785 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
786 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 787 | |
411e1bfb | 788 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
789 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
790 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 791 | |
411e1bfb | 792 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
793 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
794 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
795 | |
796 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
797 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
798 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
799 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 800 | |
411e1bfb | 801 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
802 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
803 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 804 | |
411e1bfb | 805 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
806 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
807 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 808 | |
411e1bfb | 809 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
810 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
811 | ppc64_elf_unhandled_reloc), | |
812 | ||
813 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
814 | ppc64_elf_unhandled_reloc), | |
815 | ||
816 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
817 | bfd_elf_generic_reloc), | |
e054468f | 818 | |
25f23106 | 819 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
820 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
821 | bfd_elf_generic_reloc), | |
25f23106 AM |
822 | |
823 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
824 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
825 | bfd_elf_generic_reloc), | |
25f23106 AM |
826 | |
827 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
828 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
829 | bfd_elf_generic_reloc), | |
25f23106 AM |
830 | |
831 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
832 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
833 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
834 | ppc64_elf_ha_reloc), | |
25f23106 | 835 | |
4a969973 AM |
836 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
837 | bfd_elf_generic_reloc), | |
838 | ||
839 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
840 | ppc64_elf_ha_reloc), | |
841 | ||
842 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
843 | bfd_elf_generic_reloc), | |
844 | ||
845 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
846 | ppc64_elf_ha_reloc), | |
847 | ||
848 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
849 | bfd_elf_generic_reloc), | |
850 | ||
851 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
852 | ppc64_elf_ha_reloc), | |
853 | ||
a680de9a | 854 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
855 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
856 | ppc64_elf_ha_reloc), | |
a680de9a | 857 | |
7ba71655 | 858 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
859 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
860 | ppc64_elf_ha_reloc), | |
7ba71655 | 861 | |
f9c6b907 | 862 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
863 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
864 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
865 | |
866 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
867 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
868 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
869 | |
870 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
871 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
872 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
873 | |
874 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
875 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
876 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
877 | |
878 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
879 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
880 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
881 | |
882 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
883 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
884 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 885 | |
006589cf | 886 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
887 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
888 | bfd_elf_generic_reloc), | |
006589cf | 889 | |
45965137 | 890 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
891 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
892 | bfd_elf_generic_reloc), | |
45965137 | 893 | |
5663e321 AM |
894 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, FALSE, dont, |
895 | bfd_elf_generic_reloc), | |
896 | ||
897 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, FALSE, dont, | |
898 | bfd_elf_generic_reloc), | |
899 | ||
900 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, FALSE, dont, | |
901 | bfd_elf_generic_reloc), | |
902 | ||
903 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
904 | ppc64_elf_prefix_reloc), | |
905 | ||
906 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, dont, | |
907 | ppc64_elf_prefix_reloc), | |
908 | ||
909 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
910 | ppc64_elf_prefix_reloc), | |
911 | ||
912 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
913 | ppc64_elf_prefix_reloc), | |
914 | ||
915 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
916 | ppc64_elf_prefix_reloc), | |
917 | ||
918 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
919 | ppc64_elf_unhandled_reloc), | |
920 | ||
921 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
922 | ppc64_elf_unhandled_reloc), | |
923 | ||
924 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
925 | ppc64_elf_unhandled_reloc), | |
926 | ||
c213164a AM |
927 | HOW (R_PPC64_TPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, |
928 | ppc64_elf_unhandled_reloc), | |
929 | ||
930 | HOW (R_PPC64_DTPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
931 | ppc64_elf_unhandled_reloc), | |
932 | ||
87c69f97 | 933 | HOW (R_PPC64_GOT_TLSGD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
934 | ppc64_elf_unhandled_reloc), |
935 | ||
87c69f97 | 936 | HOW (R_PPC64_GOT_TLSLD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
937 | ppc64_elf_unhandled_reloc), |
938 | ||
87c69f97 | 939 | HOW (R_PPC64_GOT_TPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
940 | ppc64_elf_unhandled_reloc), |
941 | ||
87c69f97 | 942 | HOW (R_PPC64_GOT_DTPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
943 | ppc64_elf_unhandled_reloc), |
944 | ||
5663e321 AM |
945 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, FALSE, dont, |
946 | bfd_elf_generic_reloc), | |
947 | ||
948 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, FALSE, dont, | |
949 | ppc64_elf_ha_reloc), | |
950 | ||
951 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, FALSE, dont, | |
952 | bfd_elf_generic_reloc), | |
953 | ||
954 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, FALSE, dont, | |
955 | ppc64_elf_ha_reloc), | |
956 | ||
957 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, TRUE, dont, | |
958 | bfd_elf_generic_reloc), | |
959 | ||
960 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, TRUE, dont, | |
961 | ppc64_elf_ha_reloc), | |
962 | ||
963 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, TRUE, dont, | |
964 | bfd_elf_generic_reloc), | |
965 | ||
966 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, TRUE, dont, | |
967 | ppc64_elf_ha_reloc), | |
968 | ||
969 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, FALSE, signed, | |
970 | ppc64_elf_prefix_reloc), | |
971 | ||
972 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, TRUE, signed, | |
973 | ppc64_elf_prefix_reloc), | |
974 | ||
5bd4f169 | 975 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
976 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
977 | NULL), | |
5bd4f169 AM |
978 | |
979 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
980 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
981 | NULL), | |
5bd4f169 AM |
982 | }; |
983 | ||
984 | \f | |
985 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
986 | be done. */ | |
987 | ||
988 | static void | |
4ce794b7 | 989 | ppc_howto_init (void) |
5bd4f169 AM |
990 | { |
991 | unsigned int i, type; | |
992 | ||
a4b6fadd | 993 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
994 | { |
995 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 996 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
997 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
998 | } | |
999 | } | |
1000 | ||
1001 | static reloc_howto_type * | |
87c69f97 | 1002 | ppc64_elf_reloc_type_lookup (bfd *abfd, 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; | |
87c69f97 | 1282 | case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34: r = R_PPC64_GOT_TLSGD_PCREL34; |
c213164a | 1283 | break; |
87c69f97 | 1284 | case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34: r = R_PPC64_GOT_TLSLD_PCREL34; |
c213164a | 1285 | break; |
87c69f97 | 1286 | case BFD_RELOC_PPC64_GOT_TPREL_PCREL34: r = R_PPC64_GOT_TPREL_PCREL34; |
c213164a | 1287 | break; |
87c69f97 | 1288 | case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34: r = R_PPC64_GOT_DTPREL_PCREL34; |
c213164a | 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 | 1319 | static reloc_howto_type * |
87c69f97 | 1320 | ppc64_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
157090f7 AM |
1321 | { |
1322 | unsigned int i; | |
87c69f97 AM |
1323 | static char *compat_map[][2] = { |
1324 | { "R_PPC64_GOT_TLSGD34", "R_PPC64_GOT_TLSGD_PCREL34" }, | |
1325 | { "R_PPC64_GOT_TLSLD34", "R_PPC64_GOT_TLSLD_PCREL34" }, | |
1326 | { "R_PPC64_GOT_TPREL34", "R_PPC64_GOT_TPREL_PCREL34" }, | |
1327 | { "R_PPC64_GOT_DTPREL34", "R_PPC64_GOT_DTPREL_PCREL34" } | |
1328 | }; | |
157090f7 | 1329 | |
a4b6fadd | 1330 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1331 | if (ppc64_elf_howto_raw[i].name != NULL |
1332 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1333 | return &ppc64_elf_howto_raw[i]; | |
1334 | ||
87c69f97 AM |
1335 | /* Handle old names of relocations in case they were used by |
1336 | .reloc directives. | |
1337 | FIXME: Remove this soon. Mapping the reloc names is very likely | |
1338 | completely unnecessary. */ | |
1339 | for (i = 0; i < ARRAY_SIZE (compat_map); i++) | |
1340 | if (strcasecmp (compat_map[i][0], r_name) == 0) | |
1341 | { | |
1342 | _bfd_error_handler (_("warning: %s should be used rather than %s"), | |
1343 | compat_map[i][1], compat_map[i][0]); | |
1344 | return ppc64_elf_reloc_name_lookup (abfd, compat_map[i][1]); | |
1345 | } | |
1346 | ||
157090f7 AM |
1347 | return NULL; |
1348 | } | |
1349 | ||
5bd4f169 AM |
1350 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1351 | ||
f3185997 | 1352 | static bfd_boolean |
4aef7643 | 1353 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1354 | Elf_Internal_Rela *dst) |
5bd4f169 | 1355 | { |
65f38f15 AM |
1356 | unsigned int type; |
1357 | ||
ef60b7ff | 1358 | /* Initialize howto table if needed. */ |
5bd4f169 | 1359 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1360 | ppc_howto_init (); |
1361 | ||
65f38f15 | 1362 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1363 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1364 | { |
695344c0 | 1365 | /* xgettext:c-format */ |
0aa13fee | 1366 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1367 | abfd, type); |
f3185997 NC |
1368 | bfd_set_error (bfd_error_bad_value); |
1369 | return FALSE; | |
d0fb9a8d | 1370 | } |
65f38f15 | 1371 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1372 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1373 | { | |
1374 | /* xgettext:c-format */ | |
1375 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1376 | abfd, type); | |
1377 | bfd_set_error (bfd_error_bad_value); | |
1378 | return FALSE; | |
1379 | } | |
2cdcc330 | 1380 | |
f3185997 | 1381 | return TRUE; |
5bd4f169 AM |
1382 | } |
1383 | ||
04c9666a | 1384 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1385 | |
1386 | static bfd_reloc_status_type | |
4ce794b7 AM |
1387 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1388 | void *data, asection *input_section, | |
1389 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1390 | { |
a680de9a PB |
1391 | enum elf_ppc64_reloc_type r_type; |
1392 | long insn; | |
1393 | bfd_size_type octets; | |
3de43e7b | 1394 | bfd_vma value; |
a680de9a | 1395 | |
805fc799 AM |
1396 | /* If this is a relocatable link (output_bfd test tells us), just |
1397 | call the generic function. Any adjustment will be done at final | |
1398 | link time. */ | |
1399 | if (output_bfd != NULL) | |
cedb70c5 | 1400 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1401 | input_section, output_bfd, error_message); |
1402 | ||
5663e321 AM |
1403 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1404 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1405 | doesn't matter. */ |
a680de9a | 1406 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1407 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1408 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1409 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1410 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1411 | reloc_entry->addend += 1ULL << 33; | |
1412 | else | |
1413 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1414 | if (r_type != R_PPC64_REL16DX_HA) |
1415 | return bfd_reloc_continue; | |
1416 | ||
1417 | value = 0; | |
1418 | if (!bfd_is_com_section (symbol->section)) | |
1419 | value = symbol->value; | |
1420 | value += (reloc_entry->addend | |
1421 | + symbol->section->output_offset | |
1422 | + symbol->section->output_section->vma); | |
1423 | value -= (reloc_entry->address | |
1424 | + input_section->output_offset | |
1425 | + input_section->output_section->vma); | |
3de43e7b | 1426 | value = (bfd_signed_vma) value >> 16; |
a680de9a | 1427 | |
bb294208 | 1428 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
a680de9a PB |
1429 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1430 | insn &= ~0x1fffc1; | |
3de43e7b | 1431 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1432 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1433 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1434 | return bfd_reloc_overflow; |
1435 | return bfd_reloc_ok; | |
805fc799 | 1436 | } |
5bd4f169 | 1437 | |
2441e016 AM |
1438 | static bfd_reloc_status_type |
1439 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1440 | void *data, asection *input_section, | |
1441 | bfd *output_bfd, char **error_message) | |
1442 | { | |
1443 | if (output_bfd != NULL) | |
1444 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1445 | input_section, output_bfd, error_message); | |
1446 | ||
699733f6 AM |
1447 | if (strcmp (symbol->section->name, ".opd") == 0 |
1448 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1449 | { |
1450 | bfd_vma dest = opd_entry_value (symbol->section, | |
1451 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1452 | NULL, NULL, FALSE); |
2441e016 AM |
1453 | if (dest != (bfd_vma) -1) |
1454 | reloc_entry->addend = dest - (symbol->value | |
1455 | + symbol->section->output_section->vma | |
1456 | + symbol->section->output_offset); | |
1457 | } | |
810d4e75 AM |
1458 | else |
1459 | { | |
1460 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1461 | ||
1462 | if (symbol->section->owner != abfd | |
9f284bf9 | 1463 | && symbol->section->owner != NULL |
810d4e75 AM |
1464 | && abiversion (symbol->section->owner) >= 2) |
1465 | { | |
1466 | unsigned int i; | |
1467 | ||
1468 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1469 | { | |
1470 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1471 | ||
1472 | if (strcmp (symdef->name, symbol->name) == 0) | |
1473 | { | |
1474 | elfsym = (elf_symbol_type *) symdef; | |
1475 | break; | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | reloc_entry->addend | |
1480 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1481 | } | |
2441e016 AM |
1482 | return bfd_reloc_continue; |
1483 | } | |
1484 | ||
805fc799 | 1485 | static bfd_reloc_status_type |
4ce794b7 AM |
1486 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1487 | void *data, asection *input_section, | |
1488 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1489 | { |
1490 | long insn; | |
04c9666a | 1491 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1492 | bfd_size_type octets; |
794e51c0 AM |
1493 | /* Assume 'at' branch hints. */ |
1494 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1495 | |
1496 | /* If this is a relocatable link (output_bfd test tells us), just | |
1497 | call the generic function. Any adjustment will be done at final | |
1498 | link time. */ | |
5bd4f169 | 1499 | if (output_bfd != NULL) |
cedb70c5 | 1500 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1501 | input_section, output_bfd, error_message); |
1502 | ||
bb294208 | 1503 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1504 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1505 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1506 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1507 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1508 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1509 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1510 | |
794e51c0 | 1511 | if (is_isa_v2) |
5bd4f169 | 1512 | { |
805fc799 AM |
1513 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1514 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1515 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1516 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1517 | insn |= 0x02 << 21; | |
1518 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1519 | insn |= 0x08 << 21; | |
1520 | else | |
2441e016 | 1521 | goto out; |
5bd4f169 | 1522 | } |
805fc799 AM |
1523 | else |
1524 | { | |
1525 | bfd_vma target = 0; | |
1526 | bfd_vma from; | |
5bd4f169 | 1527 | |
805fc799 AM |
1528 | if (!bfd_is_com_section (symbol->section)) |
1529 | target = symbol->value; | |
1530 | target += symbol->section->output_section->vma; | |
1531 | target += symbol->section->output_offset; | |
1532 | target += reloc_entry->addend; | |
5bd4f169 | 1533 | |
805fc799 AM |
1534 | from = (reloc_entry->address |
1535 | + input_section->output_offset | |
1536 | + input_section->output_section->vma); | |
5bd4f169 | 1537 | |
805fc799 AM |
1538 | /* Invert 'y' bit if not the default. */ |
1539 | if ((bfd_signed_vma) (target - from) < 0) | |
1540 | insn ^= 0x01 << 21; | |
1541 | } | |
4ce794b7 | 1542 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1543 | out: |
1544 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1545 | input_section, output_bfd, error_message); | |
805fc799 | 1546 | } |
5bd4f169 | 1547 | |
805fc799 | 1548 | static bfd_reloc_status_type |
4ce794b7 AM |
1549 | ppc64_elf_sectoff_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 | 1558 | input_section, output_bfd, error_message); |
5bd4f169 | 1559 | |
805fc799 AM |
1560 | /* Subtract the symbol section base address. */ |
1561 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1562 | return bfd_reloc_continue; |
1563 | } | |
1564 | ||
805fc799 | 1565 | static bfd_reloc_status_type |
4ce794b7 AM |
1566 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1567 | void *data, asection *input_section, | |
1568 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1569 | { |
1570 | /* If this is a relocatable link (output_bfd test tells us), just | |
1571 | call the generic function. Any adjustment will be done at final | |
1572 | link time. */ | |
1573 | if (output_bfd != NULL) | |
cedb70c5 | 1574 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1575 | input_section, output_bfd, error_message); |
1576 | ||
1577 | /* Subtract the symbol section base address. */ | |
1578 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1579 | ||
1580 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1581 | reloc_entry->addend += 0x8000; | |
1582 | return bfd_reloc_continue; | |
1583 | } | |
1584 | ||
1585 | static bfd_reloc_status_type | |
4ce794b7 AM |
1586 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1587 | void *data, asection *input_section, | |
1588 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1589 | { |
1590 | bfd_vma TOCstart; | |
1591 | ||
1592 | /* If this is a relocatable link (output_bfd test tells us), just | |
1593 | call the generic function. Any adjustment will be done at final | |
1594 | link time. */ | |
1595 | if (output_bfd != NULL) | |
cedb70c5 | 1596 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1597 | input_section, output_bfd, error_message); |
1598 | ||
1599 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1600 | if (TOCstart == 0) | |
1c865ab2 | 1601 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1602 | |
1603 | /* Subtract the TOC base address. */ | |
1604 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1605 | return bfd_reloc_continue; | |
1606 | } | |
1607 | ||
1608 | static bfd_reloc_status_type | |
4ce794b7 AM |
1609 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1610 | void *data, asection *input_section, | |
1611 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1612 | { |
1613 | bfd_vma TOCstart; | |
1614 | ||
1615 | /* If this is a relocatable link (output_bfd test tells us), just | |
1616 | call the generic function. Any adjustment will be done at final | |
1617 | link time. */ | |
1618 | if (output_bfd != NULL) | |
cedb70c5 | 1619 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1620 | input_section, output_bfd, error_message); |
1621 | ||
1622 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1623 | if (TOCstart == 0) | |
1c865ab2 | 1624 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1625 | |
1626 | /* Subtract the TOC base address. */ | |
1627 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1628 | ||
1629 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1630 | reloc_entry->addend += 0x8000; | |
1631 | return bfd_reloc_continue; | |
1632 | } | |
1633 | ||
1634 | static bfd_reloc_status_type | |
4ce794b7 AM |
1635 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1636 | void *data, asection *input_section, | |
1637 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1638 | { |
1639 | bfd_vma TOCstart; | |
1640 | bfd_size_type octets; | |
1641 | ||
1642 | /* If this is a relocatable link (output_bfd test tells us), just | |
1643 | call the generic function. Any adjustment will be done at final | |
1644 | link time. */ | |
1645 | if (output_bfd != NULL) | |
cedb70c5 | 1646 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1647 | input_section, output_bfd, error_message); |
1648 | ||
1649 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1650 | if (TOCstart == 0) | |
1c865ab2 | 1651 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 | 1652 | |
bb294208 | 1653 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1654 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); |
1655 | return bfd_reloc_ok; | |
1656 | } | |
1657 | ||
5663e321 AM |
1658 | static bfd_reloc_status_type |
1659 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1660 | void *data, asection *input_section, | |
1661 | bfd *output_bfd, char **error_message) | |
1662 | { | |
1663 | uint64_t insn; | |
1664 | bfd_vma targ; | |
1665 | ||
1666 | if (output_bfd != NULL) | |
1667 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1668 | input_section, output_bfd, error_message); | |
1669 | ||
1670 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1671 | insn <<= 32; | |
1672 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1673 | ||
1674 | targ = (symbol->section->output_section->vma | |
1675 | + symbol->section->output_offset | |
1676 | + reloc_entry->addend); | |
1677 | if (!bfd_is_com_section (symbol->section)) | |
1678 | targ += symbol->value; | |
1679 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1680 | targ += 1ULL << 33; | |
1681 | if (reloc_entry->howto->pc_relative) | |
1682 | { | |
1683 | bfd_vma from = (reloc_entry->address | |
1684 | + input_section->output_offset | |
1685 | + input_section->output_section->vma); | |
1686 | targ -=from; | |
1687 | } | |
1688 | targ >>= reloc_entry->howto->rightshift; | |
1689 | insn &= ~reloc_entry->howto->dst_mask; | |
1690 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1691 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1692 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1693 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1694 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1695 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1696 | return bfd_reloc_overflow; | |
1697 | return bfd_reloc_ok; | |
1698 | } | |
1699 | ||
805fc799 | 1700 | static bfd_reloc_status_type |
4ce794b7 AM |
1701 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1702 | void *data, asection *input_section, | |
1703 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1704 | { |
1705 | /* If this is a relocatable link (output_bfd test tells us), just | |
1706 | call the generic function. Any adjustment will be done at final | |
1707 | link time. */ | |
1708 | if (output_bfd != NULL) | |
cedb70c5 | 1709 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1710 | input_section, output_bfd, error_message); |
1711 | ||
1712 | if (error_message != NULL) | |
1713 | { | |
1714 | static char buf[60]; | |
1715 | sprintf (buf, "generic linker can't handle %s", | |
1716 | reloc_entry->howto->name); | |
1717 | *error_message = buf; | |
1718 | } | |
1719 | return bfd_reloc_dangerous; | |
1720 | } | |
1721 | ||
927be08e AM |
1722 | /* Track GOT entries needed for a given symbol. We might need more |
1723 | than one got entry per symbol. */ | |
1724 | struct got_entry | |
1725 | { | |
1726 | struct got_entry *next; | |
1727 | ||
1728 | /* The symbol addend that we'll be placing in the GOT. */ | |
1729 | bfd_vma addend; | |
1730 | ||
1731 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1732 | symbol referenced from different input files. This is to support | |
1733 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1734 | from one input file to another. After partitioning into TOC groups | |
1735 | we merge entries within the group. | |
1736 | ||
1737 | Point to the BFD owning this GOT entry. */ | |
1738 | bfd *owner; | |
1739 | ||
1740 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1741 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1742 | unsigned char tls_type; |
927be08e AM |
1743 | |
1744 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1745 | unsigned char is_indirect; |
927be08e AM |
1746 | |
1747 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1748 | union | |
2cdcc330 AM |
1749 | { |
1750 | bfd_signed_vma refcount; | |
1751 | bfd_vma offset; | |
1752 | struct got_entry *ent; | |
1753 | } got; | |
927be08e AM |
1754 | }; |
1755 | ||
1756 | /* The same for PLT. */ | |
1757 | struct plt_entry | |
1758 | { | |
1759 | struct plt_entry *next; | |
1760 | ||
1761 | bfd_vma addend; | |
1762 | ||
1763 | union | |
2cdcc330 AM |
1764 | { |
1765 | bfd_signed_vma refcount; | |
1766 | bfd_vma offset; | |
1767 | } plt; | |
927be08e AM |
1768 | }; |
1769 | ||
e717da7e AM |
1770 | struct ppc64_elf_obj_tdata |
1771 | { | |
1772 | struct elf_obj_tdata elf; | |
1773 | ||
1774 | /* Shortcuts to dynamic linker sections. */ | |
1775 | asection *got; | |
1776 | asection *relgot; | |
1777 | ||
b3fac117 AM |
1778 | /* Used during garbage collection. We attach global symbols defined |
1779 | on removed .opd entries to this section so that the sym is removed. */ | |
1780 | asection *deleted_section; | |
81688140 | 1781 | |
927be08e | 1782 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1783 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1784 | struct got_entry tlsld_got; |
8860955f | 1785 | |
2cdcc330 AM |
1786 | union |
1787 | { | |
729eabd5 AM |
1788 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1789 | Elf_Internal_Rela *relocs; | |
1790 | ||
1791 | /* Section contents. */ | |
1792 | bfd_byte *contents; | |
1793 | } opd; | |
d77c8a4b AM |
1794 | |
1795 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1796 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1797 | unsigned int has_small_toc_reloc : 1; |
1798 | ||
560c8763 AM |
1799 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1800 | instruction not one we handle. */ | |
1801 | unsigned int unexpected_toc_insn : 1; | |
066f4018 | 1802 | |
903b777d AM |
1803 | /* Set if PLT/GOT/TOC relocs that can be optimised are present in |
1804 | this file. */ | |
1805 | unsigned int has_optrel : 1; | |
e717da7e AM |
1806 | }; |
1807 | ||
1808 | #define ppc64_elf_tdata(bfd) \ | |
1809 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1810 | ||
1811 | #define ppc64_tlsld_got(bfd) \ | |
1812 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1813 | ||
0c8d6e5c AM |
1814 | #define is_ppc64_elf(bfd) \ |
1815 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1816 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1817 | |
e717da7e AM |
1818 | /* Override the generic function because we store some extras. */ |
1819 | ||
1820 | static bfd_boolean | |
1821 | ppc64_elf_mkobject (bfd *abfd) | |
1822 | { | |
0ffa91dd | 1823 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1824 | PPC64_ELF_DATA); |
e717da7e AM |
1825 | } |
1826 | ||
feee612b | 1827 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1828 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1829 | |
b34976b6 | 1830 | static bfd_boolean |
4ce794b7 | 1831 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1832 | { |
14b57c7c AM |
1833 | if (!abfd->arch_info->the_default) |
1834 | return TRUE; | |
1835 | ||
1836 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1837 | { |
1838 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1839 | ||
1840 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1841 | { | |
1842 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1843 | abfd->arch_info = abfd->arch_info->next; | |
1844 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1845 | } | |
1846 | } | |
14b57c7c | 1847 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1848 | } |
1849 | ||
d37c89e5 AM |
1850 | /* Support for core dump NOTE sections. */ |
1851 | ||
1852 | static bfd_boolean | |
1853 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1854 | { | |
eea6121a | 1855 | size_t offset, size; |
d37c89e5 AM |
1856 | |
1857 | if (note->descsz != 504) | |
1858 | return FALSE; | |
1859 | ||
1860 | /* pr_cursig */ | |
228e534f | 1861 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1862 | |
1863 | /* pr_pid */ | |
228e534f | 1864 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1865 | |
1866 | /* pr_reg */ | |
1867 | offset = 112; | |
eea6121a | 1868 | size = 384; |
d37c89e5 AM |
1869 | |
1870 | /* Make a ".reg/999" section. */ | |
1871 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1872 | size, note->descpos + offset); |
d37c89e5 AM |
1873 | } |
1874 | ||
1875 | static bfd_boolean | |
1876 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1877 | { | |
1878 | if (note->descsz != 136) | |
1879 | return FALSE; | |
1880 | ||
228e534f | 1881 | elf_tdata (abfd)->core->pid |
bc989cdc | 1882 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1883 | elf_tdata (abfd)->core->program |
d37c89e5 | 1884 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1885 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1886 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1887 | ||
1888 | return TRUE; | |
1889 | } | |
1890 | ||
183e98be AM |
1891 | static char * |
1892 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1893 | ...) | |
1894 | { | |
1895 | switch (note_type) | |
1896 | { | |
1897 | default: | |
1898 | return NULL; | |
1899 | ||
1900 | case NT_PRPSINFO: | |
1901 | { | |
9ef6d1e3 | 1902 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1903 | va_list ap; |
1904 | ||
1905 | va_start (ap, note_type); | |
75cd47ed | 1906 | memset (data, 0, sizeof (data)); |
183e98be | 1907 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1908 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1909 | DIAGNOSTIC_PUSH; |
be3e27bb | 1910 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1911 | -Wstringop-truncation: |
1912 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1913 | */ | |
95da9854 L |
1914 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1915 | #endif | |
183e98be | 1916 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1917 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1918 | DIAGNOSTIC_POP; |
fe75810f | 1919 | #endif |
183e98be AM |
1920 | va_end (ap); |
1921 | return elfcore_write_note (abfd, buf, bufsiz, | |
1922 | "CORE", note_type, data, sizeof (data)); | |
1923 | } | |
1924 | ||
1925 | case NT_PRSTATUS: | |
1926 | { | |
1927 | char data[504]; | |
1928 | va_list ap; | |
1929 | long pid; | |
1930 | int cursig; | |
1931 | const void *greg; | |
1932 | ||
1933 | va_start (ap, note_type); | |
1934 | memset (data, 0, 112); | |
1935 | pid = va_arg (ap, long); | |
1936 | bfd_put_32 (abfd, pid, data + 32); | |
1937 | cursig = va_arg (ap, int); | |
1938 | bfd_put_16 (abfd, cursig, data + 12); | |
1939 | greg = va_arg (ap, const void *); | |
1940 | memcpy (data + 112, greg, 384); | |
1941 | memset (data + 496, 0, 8); | |
1942 | va_end (ap); | |
1943 | return elfcore_write_note (abfd, buf, bufsiz, | |
1944 | "CORE", note_type, data, sizeof (data)); | |
1945 | } | |
1946 | } | |
1947 | } | |
1948 | ||
5d35169e AM |
1949 | /* Add extra PPC sections. */ |
1950 | ||
2cdcc330 | 1951 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1952 | { |
07d6d2b8 AM |
1953 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1954 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1955 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1956 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1957 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1958 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1959 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1960 | }; |
1961 | ||
7c8fe5c4 AM |
1962 | enum _ppc64_sec_type { |
1963 | sec_normal = 0, | |
1964 | sec_opd = 1, | |
1965 | sec_toc = 2 | |
1966 | }; | |
1967 | ||
f0abc2a1 AM |
1968 | struct _ppc64_elf_section_data |
1969 | { | |
1970 | struct bfd_elf_section_data elf; | |
411e1bfb | 1971 | |
f0abc2a1 AM |
1972 | union |
1973 | { | |
51aecdc5 AM |
1974 | /* An array with one entry for each opd function descriptor, |
1975 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1976 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1977 | struct _opd_sec_data |
1978 | { | |
1979 | /* Points to the function code section for local opd entries. */ | |
1980 | asection **func_sec; | |
1981 | ||
1982 | /* After editing .opd, adjust references to opd local syms. */ | |
1983 | long *adjust; | |
1984 | } opd; | |
7c8fe5c4 | 1985 | |
3a71aa26 AM |
1986 | /* An array for toc sections, indexed by offset/8. */ |
1987 | struct _toc_sec_data | |
1988 | { | |
1989 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1990 | unsigned *symndx; | |
1991 | ||
1992 | /* And the relocation addend. */ | |
1993 | bfd_vma *add; | |
1994 | } toc; | |
7c8fe5c4 AM |
1995 | } u; |
1996 | ||
1997 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 1998 | |
7c8fe5c4 AM |
1999 | /* Flag set when small branches are detected. Used to |
2000 | select suitable defaults for the stub group size. */ | |
2001 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
2002 | |
2003 | /* Flag set when PLTCALL relocs are detected. */ | |
2004 | unsigned int has_pltcall:1; | |
066f4018 | 2005 | |
903b777d AM |
2006 | /* Flag set when section has PLT/GOT/TOC relocations that can be |
2007 | optimised. */ | |
2008 | unsigned int has_optrel:1; | |
f0abc2a1 AM |
2009 | }; |
2010 | ||
2011 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2012 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2013 | |
2014 | static bfd_boolean | |
4ce794b7 | 2015 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2016 | { |
f592407e AM |
2017 | if (!sec->used_by_bfd) |
2018 | { | |
2019 | struct _ppc64_elf_section_data *sdata; | |
986f0783 | 2020 | size_t amt = sizeof (*sdata); |
f0abc2a1 | 2021 | |
f592407e AM |
2022 | sdata = bfd_zalloc (abfd, amt); |
2023 | if (sdata == NULL) | |
2024 | return FALSE; | |
2025 | sec->used_by_bfd = sdata; | |
2026 | } | |
f0abc2a1 AM |
2027 | |
2028 | return _bfd_elf_new_section_hook (abfd, sec); | |
2029 | } | |
4025353c | 2030 | |
bf577467 AM |
2031 | static bfd_boolean |
2032 | ppc64_elf_section_flags (const Elf_Internal_Shdr *hdr) | |
2033 | { | |
2034 | const char *name = hdr->bfd_section->name; | |
2035 | ||
2036 | if (strncmp (name, ".sbss", 5) == 0 | |
2037 | || strncmp (name, ".sdata", 6) == 0) | |
2038 | hdr->bfd_section->flags |= SEC_SMALL_DATA; | |
2039 | ||
2040 | return TRUE; | |
2041 | } | |
2042 | ||
74f0fb50 | 2043 | static struct _opd_sec_data * |
4025353c AM |
2044 | get_opd_info (asection * sec) |
2045 | { | |
2046 | if (sec != NULL | |
2047 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2048 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2049 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2050 | return NULL; |
2051 | } | |
90e3cdf2 JJ |
2052 | \f |
2053 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 2054 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 2055 | static asection *synthetic_opd; |
90e3cdf2 | 2056 | |
699733f6 | 2057 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2058 | |
2059 | static int | |
2060 | compare_symbols (const void *ap, const void *bp) | |
2061 | { | |
2cdcc330 AM |
2062 | const asymbol *a = *(const asymbol **) ap; |
2063 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 2064 | |
699733f6 AM |
2065 | /* Section symbols first. */ |
2066 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2067 | return -1; |
699733f6 | 2068 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2069 | return 1; |
2070 | ||
699733f6 | 2071 | /* then .opd symbols. */ |
cd285db5 AM |
2072 | if (synthetic_opd != NULL) |
2073 | { | |
2074 | if (strcmp (a->section->name, ".opd") == 0 | |
2075 | && strcmp (b->section->name, ".opd") != 0) | |
2076 | return -1; | |
2077 | if (strcmp (a->section->name, ".opd") != 0 | |
2078 | && strcmp (b->section->name, ".opd") == 0) | |
2079 | return 1; | |
2080 | } | |
90e3cdf2 | 2081 | |
699733f6 | 2082 | /* then other code symbols. */ |
2cdcc330 AM |
2083 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2084 | == (SEC_CODE | SEC_ALLOC)) | |
2085 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2086 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2087 | return -1; |
2088 | ||
2cdcc330 AM |
2089 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2090 | != (SEC_CODE | SEC_ALLOC)) | |
2091 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2092 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2093 | return 1; |
2094 | ||
2095 | if (synthetic_relocatable) | |
2096 | { | |
2097 | if (a->section->id < b->section->id) | |
2098 | return -1; | |
2099 | ||
2100 | if (a->section->id > b->section->id) | |
2101 | return 1; | |
2102 | } | |
2103 | ||
2104 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2105 | return -1; | |
2106 | ||
2107 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2108 | return 1; | |
2109 | ||
4d35a0aa AM |
2110 | /* For syms with the same value, prefer strong dynamic global function |
2111 | syms over other syms. */ | |
2112 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2113 | return -1; | |
2114 | ||
2115 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2116 | return 1; | |
2117 | ||
2118 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2119 | return -1; | |
2120 | ||
2121 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2122 | return 1; | |
2123 | ||
2124 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2125 | return -1; | |
2126 | ||
2127 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2128 | return 1; | |
2129 | ||
2130 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2131 | return -1; | |
2132 | ||
2133 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2134 | return 1; | |
2135 | ||
dcea6a95 AM |
2136 | /* Finally, sort on where the symbol is in memory. The symbols will |
2137 | be in at most two malloc'd blocks, one for static syms, one for | |
2138 | dynamic syms, and we distinguish the two blocks above by testing | |
2139 | BSF_DYNAMIC. Since we are sorting the symbol pointers which were | |
2140 | originally in the same order as the symbols (and we're not | |
2141 | sorting the symbols themselves), this ensures a stable sort. */ | |
2142 | if (a < b) | |
2143 | return -1; | |
2144 | if (a > b) | |
2145 | return 1; | |
2146 | return 0; | |
90e3cdf2 JJ |
2147 | } |
2148 | ||
699733f6 | 2149 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2150 | |
699733f6 | 2151 | static asymbol * |
9ad9b810 AM |
2152 | sym_exists_at (asymbol **syms, size_t lo, size_t hi, unsigned int id, |
2153 | bfd_vma value) | |
90e3cdf2 | 2154 | { |
9ad9b810 | 2155 | size_t mid; |
90e3cdf2 | 2156 | |
7292b3ac | 2157 | if (id == (unsigned) -1) |
699733f6 AM |
2158 | { |
2159 | while (lo < hi) | |
2160 | { | |
2161 | mid = (lo + hi) >> 1; | |
2162 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2163 | lo = mid + 1; | |
2164 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2165 | hi = mid; | |
2166 | else | |
2167 | return syms[mid]; | |
2168 | } | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | while (lo < hi) | |
2173 | { | |
2174 | mid = (lo + hi) >> 1; | |
2175 | if (syms[mid]->section->id < id) | |
2176 | lo = mid + 1; | |
2177 | else if (syms[mid]->section->id > id) | |
2178 | hi = mid; | |
2179 | else if (syms[mid]->value < value) | |
2180 | lo = mid + 1; | |
2181 | else if (syms[mid]->value > value) | |
2182 | hi = mid; | |
2183 | else | |
2184 | return syms[mid]; | |
2185 | } | |
2186 | } | |
2187 | return NULL; | |
90e3cdf2 JJ |
2188 | } |
2189 | ||
468392fb AM |
2190 | static bfd_boolean |
2191 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2192 | { | |
2193 | bfd_vma vma = *(bfd_vma *) ptr; | |
2194 | return ((section->flags & SEC_ALLOC) != 0 | |
2195 | && section->vma <= vma | |
2196 | && vma < section->vma + section->size); | |
2197 | } | |
2198 | ||
699733f6 | 2199 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2200 | entry syms. Also generate @plt symbols for the glink branch table. |
2201 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2202 | |
2203 | static long | |
a7535cf3 AM |
2204 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2205 | long static_count, asymbol **static_syms, | |
2206 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2207 | asymbol **ret) |
90e3cdf2 JJ |
2208 | { |
2209 | asymbol *s; | |
0ccf57bd | 2210 | size_t i, j, count; |
90e3cdf2 | 2211 | char *names; |
0ccf57bd | 2212 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2213 | asection *opd = NULL; |
90e3cdf2 | 2214 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2215 | asymbol **syms; |
ee67d69a | 2216 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2217 | |
2218 | *ret = NULL; | |
2219 | ||
ee67d69a AM |
2220 | if (abi < 2) |
2221 | { | |
2222 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2223 | if (opd == NULL && abi == 1) | |
2224 | return 0; | |
2225 | } | |
90e3cdf2 | 2226 | |
a5259595 AM |
2227 | syms = NULL; |
2228 | codesecsym = 0; | |
2229 | codesecsymend = 0; | |
2230 | secsymend = 0; | |
2231 | opdsymend = 0; | |
2232 | symcount = 0; | |
2233 | if (opd != NULL) | |
c9727e01 | 2234 | { |
a5259595 AM |
2235 | symcount = static_count; |
2236 | if (!relocatable) | |
2237 | symcount += dyn_count; | |
2238 | if (symcount == 0) | |
2239 | return 0; | |
c9727e01 | 2240 | |
a5259595 AM |
2241 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2242 | if (syms == NULL) | |
2243 | return -1; | |
90e3cdf2 | 2244 | |
a5259595 AM |
2245 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2246 | { | |
2247 | /* Use both symbol tables. */ | |
2248 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2249 | memcpy (syms + static_count, dyn_syms, | |
2250 | (dyn_count + 1) * sizeof (*syms)); | |
2251 | } | |
2252 | else if (!relocatable && static_count == 0) | |
2253 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2254 | else | |
2255 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2256 | |
0ccf57bd AM |
2257 | /* Trim uninteresting symbols. Interesting symbols are section, |
2258 | function, and notype symbols. */ | |
2259 | for (i = 0, j = 0; i < symcount; ++i) | |
2260 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2261 | | BSF_RELC | BSF_SRELC)) == 0) | |
2262 | syms[j++] = syms[i]; | |
2263 | symcount = j; | |
2264 | ||
a5259595 AM |
2265 | synthetic_relocatable = relocatable; |
2266 | synthetic_opd = opd; | |
2267 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2268 | |
a5259595 AM |
2269 | if (!relocatable && symcount > 1) |
2270 | { | |
bfa5bd2a PA |
2271 | /* Trim duplicate syms, since we may have merged the normal |
2272 | and dynamic symbols. Actually, we only care about syms | |
2273 | that have different values, so trim any with the same | |
2274 | value. Don't consider ifunc and ifunc resolver symbols | |
2275 | duplicates however, because GDB wants to know whether a | |
2276 | text symbol is an ifunc resolver. */ | |
a5259595 | 2277 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2278 | { |
2279 | const asymbol *s0 = syms[i - 1]; | |
2280 | const asymbol *s1 = syms[i]; | |
2281 | ||
2282 | if ((s0->value + s0->section->vma | |
2283 | != s1->value + s1->section->vma) | |
2284 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2285 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2286 | syms[j++] = syms[i]; | |
2287 | } | |
a5259595 AM |
2288 | symcount = j; |
2289 | } | |
699733f6 | 2290 | |
a5259595 AM |
2291 | i = 0; |
2292 | /* Note that here and in compare_symbols we can't compare opd and | |
2293 | sym->section directly. With separate debug info files, the | |
2294 | symbols will be extracted from the debug file while abfd passed | |
2295 | to this function is the real binary. */ | |
0ccf57bd | 2296 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2297 | ++i; |
2298 | codesecsym = i; | |
2299 | ||
2300 | for (; i < symcount; ++i) | |
2301 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2302 | | SEC_THREAD_LOCAL)) | |
2303 | != (SEC_CODE | SEC_ALLOC)) | |
2304 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2305 | break; | |
2306 | codesecsymend = i; | |
2307 | ||
2308 | for (; i < symcount; ++i) | |
2309 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2310 | break; | |
2311 | secsymend = i; | |
2312 | ||
2313 | for (; i < symcount; ++i) | |
2314 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2315 | break; | |
2316 | opdsymend = i; | |
2317 | ||
2318 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2319 | if (((syms[i]->section->flags |
2320 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2321 | != (SEC_CODE | SEC_ALLOC)) |
2322 | break; | |
2323 | symcount = i; | |
2324 | } | |
c9727e01 | 2325 | count = 0; |
90e3cdf2 | 2326 | |
699733f6 | 2327 | if (relocatable) |
90e3cdf2 | 2328 | { |
699733f6 AM |
2329 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2330 | arelent *r; | |
2331 | size_t size; | |
0ccf57bd | 2332 | size_t relcount; |
90e3cdf2 | 2333 | |
468392fb AM |
2334 | if (opdsymend == secsymend) |
2335 | goto done; | |
2336 | ||
699733f6 | 2337 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2338 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2339 | if (relcount == 0) |
c9727e01 | 2340 | goto done; |
90e3cdf2 | 2341 | |
7356fed5 AM |
2342 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2343 | { | |
2344 | count = -1; | |
2345 | goto done; | |
2346 | } | |
2347 | ||
699733f6 | 2348 | size = 0; |
595da8c5 | 2349 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2350 | { |
2351 | asymbol *sym; | |
90e3cdf2 | 2352 | |
595da8c5 | 2353 | while (r < opd->relocation + relcount |
699733f6 AM |
2354 | && r->address < syms[i]->value + opd->vma) |
2355 | ++r; | |
90e3cdf2 | 2356 | |
595da8c5 | 2357 | if (r == opd->relocation + relcount) |
699733f6 | 2358 | break; |
90e3cdf2 | 2359 | |
699733f6 AM |
2360 | if (r->address != syms[i]->value + opd->vma) |
2361 | continue; | |
90e3cdf2 | 2362 | |
699733f6 AM |
2363 | if (r->howto->type != R_PPC64_ADDR64) |
2364 | continue; | |
90e3cdf2 | 2365 | |
699733f6 AM |
2366 | sym = *r->sym_ptr_ptr; |
2367 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2368 | sym->section->id, sym->value + r->addend)) | |
2369 | { | |
2370 | ++count; | |
2371 | size += sizeof (asymbol); | |
2372 | size += strlen (syms[i]->name) + 2; | |
2373 | } | |
2374 | } | |
90e3cdf2 | 2375 | |
c4b0b099 AM |
2376 | if (size == 0) |
2377 | goto done; | |
699733f6 AM |
2378 | s = *ret = bfd_malloc (size); |
2379 | if (s == NULL) | |
2380 | { | |
7356fed5 | 2381 | count = -1; |
c9727e01 | 2382 | goto done; |
699733f6 | 2383 | } |
90e3cdf2 | 2384 | |
699733f6 | 2385 | names = (char *) (s + count); |
90e3cdf2 | 2386 | |
595da8c5 | 2387 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2388 | { |
699733f6 | 2389 | asymbol *sym; |
90e3cdf2 | 2390 | |
595da8c5 | 2391 | while (r < opd->relocation + relcount |
699733f6 AM |
2392 | && r->address < syms[i]->value + opd->vma) |
2393 | ++r; | |
90e3cdf2 | 2394 | |
595da8c5 | 2395 | if (r == opd->relocation + relcount) |
699733f6 AM |
2396 | break; |
2397 | ||
2398 | if (r->address != syms[i]->value + opd->vma) | |
2399 | continue; | |
2400 | ||
2401 | if (r->howto->type != R_PPC64_ADDR64) | |
2402 | continue; | |
90e3cdf2 | 2403 | |
699733f6 AM |
2404 | sym = *r->sym_ptr_ptr; |
2405 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2406 | sym->section->id, sym->value + r->addend)) | |
2407 | { | |
2408 | size_t len; | |
2409 | ||
2410 | *s = *syms[i]; | |
6ba2a415 | 2411 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2412 | s->section = sym->section; |
2413 | s->value = sym->value + r->addend; | |
2414 | s->name = names; | |
2415 | *names++ = '.'; | |
2416 | len = strlen (syms[i]->name); | |
2417 | memcpy (names, syms[i]->name, len + 1); | |
2418 | names += len + 1; | |
6f610d07 UW |
2419 | /* Have udata.p point back to the original symbol this |
2420 | synthetic symbol was derived from. */ | |
2421 | s->udata.p = syms[i]; | |
699733f6 AM |
2422 | s++; |
2423 | } | |
2424 | } | |
2425 | } | |
2426 | else | |
90e3cdf2 | 2427 | { |
468392fb | 2428 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2429 | bfd_byte *contents = NULL; |
699733f6 | 2430 | size_t size; |
0ccf57bd | 2431 | size_t plt_count = 0; |
468392fb AM |
2432 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2433 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2434 | arelent *p; | |
90e3cdf2 | 2435 | |
ee67d69a | 2436 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2437 | { |
c4b0b099 AM |
2438 | free_contents_and_exit_err: |
2439 | count = -1; | |
ee67d69a | 2440 | free_contents_and_exit: |
c9594989 | 2441 | free (contents); |
c9727e01 | 2442 | goto done; |
699733f6 | 2443 | } |
90e3cdf2 | 2444 | |
699733f6 AM |
2445 | size = 0; |
2446 | for (i = secsymend; i < opdsymend; ++i) | |
2447 | { | |
2448 | bfd_vma ent; | |
90e3cdf2 | 2449 | |
5ef11c02 AM |
2450 | /* Ignore bogus symbols. */ |
2451 | if (syms[i]->value > opd->size - 8) | |
2452 | continue; | |
2453 | ||
699733f6 AM |
2454 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2455 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2456 | { | |
2457 | ++count; | |
2458 | size += sizeof (asymbol); | |
2459 | size += strlen (syms[i]->name) + 2; | |
2460 | } | |
2461 | } | |
90e3cdf2 | 2462 | |
468392fb | 2463 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2464 | if (dyn_count != 0 |
2465 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2466 | { |
2467 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2468 | size_t extdynsize; | |
2469 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2470 | ||
2471 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2472 | goto free_contents_and_exit_err; |
468392fb AM |
2473 | |
2474 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2475 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2476 | ||
2477 | extdyn = dynbuf; | |
2478 | extdynend = extdyn + dynamic->size; | |
2479 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2480 | { | |
2481 | Elf_Internal_Dyn dyn; | |
2482 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2483 | ||
2484 | if (dyn.d_tag == DT_NULL) | |
2485 | break; | |
2486 | ||
2487 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2488 | { | |
9e390558 AM |
2489 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2490 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2491 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2492 | /* The .glink section usually does not survive the final |
2493 | link; search for the section (usually .text) where the | |
2494 | glink stubs now reside. */ | |
2495 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2496 | &glink_vma); | |
2497 | break; | |
2498 | } | |
2499 | } | |
2500 | ||
2501 | free (dynbuf); | |
2502 | } | |
2503 | ||
2504 | if (glink != NULL) | |
2505 | { | |
2506 | /* Determine __glink trampoline by reading the relative branch | |
2507 | from the first glink stub. */ | |
2508 | bfd_byte buf[4]; | |
b9e5796b AM |
2509 | unsigned int off = 0; |
2510 | ||
2511 | while (bfd_get_section_contents (abfd, glink, buf, | |
2512 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2513 | { |
2514 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2515 | insn ^= B_DOT; | |
2516 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2517 | { |
2cdcc330 AM |
2518 | resolv_vma |
2519 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2520 | break; |
2521 | } | |
2522 | off += 4; | |
2523 | if (off > 4) | |
2524 | break; | |
468392fb AM |
2525 | } |
2526 | ||
2527 | if (resolv_vma) | |
2528 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2529 | |
066ee829 AM |
2530 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2531 | if (relplt != NULL) | |
2532 | { | |
2533 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2534 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2535 | goto free_contents_and_exit_err; |
68ffbac6 | 2536 | |
066ee829 AM |
2537 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2538 | size += plt_count * sizeof (asymbol); | |
468392fb | 2539 | |
066ee829 AM |
2540 | p = relplt->relocation; |
2541 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2542 | { |
2543 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2544 | if (p->addend != 0) | |
2545 | size += sizeof ("+0x") - 1 + 16; | |
2546 | } | |
066ee829 | 2547 | } |
468392fb AM |
2548 | } |
2549 | ||
c4b0b099 AM |
2550 | if (size == 0) |
2551 | goto free_contents_and_exit; | |
699733f6 AM |
2552 | s = *ret = bfd_malloc (size); |
2553 | if (s == NULL) | |
c4b0b099 | 2554 | goto free_contents_and_exit_err; |
90e3cdf2 | 2555 | |
468392fb | 2556 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2557 | |
699733f6 | 2558 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2559 | { |
699733f6 | 2560 | bfd_vma ent; |
90e3cdf2 | 2561 | |
5ef11c02 AM |
2562 | if (syms[i]->value > opd->size - 8) |
2563 | continue; | |
2564 | ||
699733f6 AM |
2565 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2566 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2567 | { |
0ccf57bd | 2568 | size_t lo, hi; |
699733f6 | 2569 | size_t len; |
c9727e01 | 2570 | asection *sec = abfd->sections; |
90e3cdf2 | 2571 | |
699733f6 AM |
2572 | *s = *syms[i]; |
2573 | lo = codesecsym; | |
2574 | hi = codesecsymend; | |
2575 | while (lo < hi) | |
2576 | { | |
0ccf57bd | 2577 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2578 | if (syms[mid]->section->vma < ent) |
2579 | lo = mid + 1; | |
2580 | else if (syms[mid]->section->vma > ent) | |
2581 | hi = mid; | |
2582 | else | |
c9727e01 AM |
2583 | { |
2584 | sec = syms[mid]->section; | |
2585 | break; | |
2586 | } | |
699733f6 AM |
2587 | } |
2588 | ||
c9727e01 | 2589 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2590 | sec = syms[lo - 1]->section; |
699733f6 AM |
2591 | |
2592 | for (; sec != NULL; sec = sec->next) | |
2593 | { | |
2594 | if (sec->vma > ent) | |
2595 | break; | |
63524580 JK |
2596 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2597 | info file. */ | |
2598 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2599 | break; |
2600 | if ((sec->flags & SEC_CODE) != 0) | |
2601 | s->section = sec; | |
2602 | } | |
6ba2a415 | 2603 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2604 | s->value = ent - s->section->vma; |
2605 | s->name = names; | |
2606 | *names++ = '.'; | |
2607 | len = strlen (syms[i]->name); | |
2608 | memcpy (names, syms[i]->name, len + 1); | |
2609 | names += len + 1; | |
6f610d07 UW |
2610 | /* Have udata.p point back to the original symbol this |
2611 | synthetic symbol was derived from. */ | |
2612 | s->udata.p = syms[i]; | |
699733f6 | 2613 | s++; |
90e3cdf2 | 2614 | } |
90e3cdf2 | 2615 | } |
699733f6 | 2616 | free (contents); |
468392fb AM |
2617 | |
2618 | if (glink != NULL && relplt != NULL) | |
2619 | { | |
2620 | if (resolv_vma) | |
2621 | { | |
2622 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2623 | memset (s, 0, sizeof *s); |
468392fb | 2624 | s->the_bfd = abfd; |
6ba2a415 | 2625 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2626 | s->section = glink; |
2627 | s->value = resolv_vma - glink->vma; | |
2628 | s->name = names; | |
2cdcc330 AM |
2629 | memcpy (names, "__glink_PLTresolve", |
2630 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2631 | names += sizeof ("__glink_PLTresolve"); |
2632 | s++; | |
2633 | count++; | |
2634 | } | |
2635 | ||
2636 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2637 | stub rather than on the glink branch table entry. The | |
2638 | objdump disassembler would then use a sensible symbol | |
2639 | name on plt calls. The difficulty in doing so is | |
2640 | a) finding the stubs, and, | |
2641 | b) matching stubs against plt entries, and, | |
2642 | c) there can be multiple stubs for a given plt entry. | |
2643 | ||
2644 | Solving (a) could be done by code scanning, but older | |
2645 | ppc64 binaries used different stubs to current code. | |
2646 | (b) is the tricky one since you need to known the toc | |
2647 | pointer for at least one function that uses a pic stub to | |
2648 | be able to calculate the plt address referenced. | |
2649 | (c) means gdb would need to set multiple breakpoints (or | |
2650 | find the glink branch itself) when setting breakpoints | |
2651 | for pending shared library loads. */ | |
2652 | p = relplt->relocation; | |
2653 | for (i = 0; i < plt_count; i++, p++) | |
2654 | { | |
2655 | size_t len; | |
2656 | ||
2657 | *s = **p->sym_ptr_ptr; | |
2658 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2659 | we are defining a symbol, ensure one of them is set. */ | |
2660 | if ((s->flags & BSF_LOCAL) == 0) | |
2661 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2662 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2663 | s->section = glink; |
2664 | s->value = glink_vma - glink->vma; | |
2665 | s->name = names; | |
2666 | s->udata.p = NULL; | |
2667 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2668 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2669 | names += len; | |
e054468f AM |
2670 | if (p->addend != 0) |
2671 | { | |
2672 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2673 | names += sizeof ("+0x") - 1; | |
2674 | bfd_sprintf_vma (abfd, names, p->addend); | |
2675 | names += strlen (names); | |
2676 | } | |
468392fb AM |
2677 | memcpy (names, "@plt", sizeof ("@plt")); |
2678 | names += sizeof ("@plt"); | |
2679 | s++; | |
b9e5796b AM |
2680 | if (abi < 2) |
2681 | { | |
2682 | glink_vma += 8; | |
2683 | if (i >= 0x8000) | |
2684 | glink_vma += 4; | |
2685 | } | |
2686 | else | |
468392fb AM |
2687 | glink_vma += 4; |
2688 | } | |
2689 | count += plt_count; | |
2690 | } | |
90e3cdf2 JJ |
2691 | } |
2692 | ||
c9727e01 | 2693 | done: |
a7535cf3 | 2694 | free (syms); |
90e3cdf2 JJ |
2695 | return count; |
2696 | } | |
5bd4f169 | 2697 | \f |
65f38f15 AM |
2698 | /* The following functions are specific to the ELF linker, while |
2699 | functions above are used generally. Those named ppc64_elf_* are | |
2700 | called by the main ELF linker code. They appear in this file more | |
2701 | or less in the order in which they are called. eg. | |
2702 | ppc64_elf_check_relocs is called early in the link process, | |
2703 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2704 | called. |
2705 | ||
2706 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2707 | functions have both a function code symbol and a function descriptor | |
2708 | symbol. A call to foo in a relocatable object file looks like: | |
2709 | ||
2710 | . .text | |
2711 | . x: | |
2712 | . bl .foo | |
2713 | . nop | |
2714 | ||
2715 | The function definition in another object file might be: | |
2716 | ||
2717 | . .section .opd | |
2718 | . foo: .quad .foo | |
2719 | . .quad .TOC.@tocbase | |
2720 | . .quad 0 | |
2721 | . | |
2722 | . .text | |
2723 | . .foo: blr | |
2724 | ||
2725 | When the linker resolves the call during a static link, the branch | |
2726 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2727 | If the function definition is in a shared library, things are a little | |
2728 | different: The call goes via a plt call stub, the opd information gets | |
2729 | copied to the plt, and the linker patches the nop. | |
2730 | ||
2731 | . x: | |
2732 | . bl .foo_stub | |
2733 | . ld 2,40(1) | |
2734 | . | |
2735 | . | |
2736 | . .foo_stub: | |
71a39c98 AM |
2737 | . std 2,40(1) # in practice, the call stub |
2738 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2739 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2740 | . ld 12,0(11) | |
2741 | . ld 2,8(11) | |
2742 | . mtctr 12 | |
2743 | . ld 11,16(11) | |
e86ce104 AM |
2744 | . bctr |
2745 | . | |
2746 | . .section .plt | |
2747 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2748 | ||
2749 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2750 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2751 | copying. | |
2752 | ||
2753 | What are the difficulties here? Well, firstly, the relocations | |
2754 | examined by the linker in check_relocs are against the function code | |
2755 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2756 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2757 | to carefully copy dynamic link information from one symbol to the other. | |
2758 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2759 | symbol as is normal for most other backends. We need foo dynamic | |
2760 | instead, at least for an application final link. However, when | |
2761 | creating a shared library containing foo, we need to have both symbols | |
2762 | dynamic so that references to .foo are satisfied during the early | |
2763 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2764 | definition from some other object, eg. a static library. |
2765 | ||
2766 | Update: As of August 2004, we support a new convention. Function | |
2767 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2768 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2769 | |
7c8bbca5 AM |
2770 | /* Of those relocs that might be copied as dynamic relocs, this |
2771 | function selects those that must be copied when linking a shared | |
2772 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2773 | |
1d483afe AM |
2774 | static int |
2775 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2776 | enum elf_ppc64_reloc_type r_type) | |
2777 | { | |
2778 | switch (r_type) | |
2779 | { | |
2780 | default: | |
7c8bbca5 AM |
2781 | /* Only relative relocs can be resolved when the object load |
2782 | address isn't fixed. DTPREL64 is excluded because the | |
2783 | dynamic linker needs to differentiate global dynamic from | |
2784 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2785 | return 1; |
2786 | ||
2787 | case R_PPC64_REL32: | |
2788 | case R_PPC64_REL64: | |
2789 | case R_PPC64_REL30: | |
1bdd8fac AM |
2790 | case R_PPC64_TOC16: |
2791 | case R_PPC64_TOC16_DS: | |
2792 | case R_PPC64_TOC16_LO: | |
2793 | case R_PPC64_TOC16_HI: | |
2794 | case R_PPC64_TOC16_HA: | |
2795 | case R_PPC64_TOC16_LO_DS: | |
1d483afe AM |
2796 | return 0; |
2797 | ||
2798 | case R_PPC64_TPREL16: | |
2799 | case R_PPC64_TPREL16_LO: | |
2800 | case R_PPC64_TPREL16_HI: | |
2801 | case R_PPC64_TPREL16_HA: | |
2802 | case R_PPC64_TPREL16_DS: | |
2803 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2804 | case R_PPC64_TPREL16_HIGH: |
2805 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2806 | case R_PPC64_TPREL16_HIGHER: |
2807 | case R_PPC64_TPREL16_HIGHERA: | |
2808 | case R_PPC64_TPREL16_HIGHEST: | |
2809 | case R_PPC64_TPREL16_HIGHESTA: | |
2810 | case R_PPC64_TPREL64: | |
c213164a | 2811 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
2812 | /* These relocations are relative but in a shared library the |
2813 | linker doesn't know the thread pointer base. */ | |
2814 | return bfd_link_dll (info); | |
1d483afe AM |
2815 | } |
2816 | } | |
65f38f15 | 2817 | |
f4656909 | 2818 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
e1c6cf61 | 2819 | copying dynamic variables from a shared lib into an app's .dynbss |
f4656909 | 2820 | section, and instead use a dynamic relocation to point into the |
e1c6cf61 AM |
2821 | shared lib. With code that gcc generates it is vital that this be |
2822 | enabled; In the PowerPC64 ELFv1 ABI the address of a function is | |
2823 | actually the address of a function descriptor which resides in the | |
2824 | .opd section. gcc uses the descriptor directly rather than going | |
2825 | via the GOT as some other ABIs do, which means that initialized | |
2826 | function pointers reference the descriptor. Thus, a function | |
2827 | pointer initialized to the address of a function in a shared | |
2828 | library will either require a .dynbss copy and a copy reloc, or a | |
2829 | dynamic reloc. Using a .dynbss copy redefines the function | |
2830 | descriptor symbol to point to the copy. This presents a problem as | |
2831 | a PLT entry for that function is also initialized from the function | |
2832 | descriptor symbol and the copy may not be initialized first. */ | |
a23b6845 | 2833 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2834 | |
721956f4 | 2835 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2836 | string. */ |
2837 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2838 | |
2839 | /* Linker stubs. | |
2840 | ppc_stub_long_branch: | |
2841 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2842 | destination, but a 24 bit branch in a stub section will reach. | |
2843 | . b dest | |
2844 | ||
2845 | ppc_stub_plt_branch: | |
2846 | Similar to the above, but a 24 bit branch in the stub section won't | |
2847 | reach its destination. | |
6df4c9c2 AM |
2848 | . addis %r12,%r2,xxx@toc@ha |
2849 | . ld %r12,xxx@toc@l(%r12) | |
71a39c98 | 2850 | . mtctr %r12 |
721956f4 AM |
2851 | . bctr |
2852 | ||
2853 | ppc_stub_plt_call: | |
2c66dc6c AM |
2854 | Used to call a function in a shared library. If it so happens that |
2855 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2856 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2857 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2858 | . addis %r11,%r2,xxx@toc@ha |
2859 | . ld %r12,xxx+0@toc@l(%r11) | |
2860 | . mtctr %r12 | |
2861 | . ld %r2,xxx+8@toc@l(%r11) | |
2862 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2863 | . bctr |
ad8e1ba5 AM |
2864 | |
2865 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2866 | code to adjust the value and save r2 to support multiple toc sections. | |
2867 | A ppc_stub_long_branch with an r2 offset looks like: | |
2868 | . std %r2,40(%r1) | |
2869 | . addis %r2,%r2,off@ha | |
2870 | . addi %r2,%r2,off@l | |
2871 | . b dest | |
2872 | ||
2873 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2874 | . std %r2,40(%r1) | |
6df4c9c2 AM |
2875 | . addis %r12,%r2,xxx@toc@ha |
2876 | . ld %r12,xxx@toc@l(%r12) | |
ad8e1ba5 AM |
2877 | . addis %r2,%r2,off@ha |
2878 | . addi %r2,%r2,off@l | |
71a39c98 | 2879 | . mtctr %r12 |
ad8e1ba5 | 2880 | . bctr |
ac2df442 | 2881 | |
05d0e962 AM |
2882 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2883 | variants exist too, simpler for plt calls since a new toc pointer | |
2884 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2885 | has some more complex stubs to handle calls marked with NOTOC | |
2886 | relocs from functions where r2 is not a valid toc pointer. These | |
2887 | come in two flavours, the ones shown below, and _both variants that | |
2888 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2889 | one call is from a function where r2 is used as the toc pointer but | |
2890 | needs a toc adjusting stub for small-model multi-toc, and another | |
2891 | call is from a function where r2 is not valid. | |
2892 | ppc_stub_long_branch_notoc: | |
2893 | . mflr %r12 | |
2894 | . bcl 20,31,1f | |
2895 | . 1: | |
2896 | . mflr %r11 | |
2897 | . mtlr %r12 | |
2cdcc330 AM |
2898 | . addis %r12,%r11,dest-1b@ha |
2899 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2900 | . b dest |
2901 | ||
2902 | ppc_stub_plt_branch_notoc: | |
2903 | . mflr %r12 | |
2904 | . bcl 20,31,1f | |
2905 | . 1: | |
2906 | . mflr %r11 | |
2907 | . mtlr %r12 | |
2908 | . lis %r12,xxx-1b@highest | |
f891966f | 2909 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2910 | . sldi %r12,%r12,32 |
f891966f | 2911 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2912 | . ori %r12,%r12,xxx-1b@l |
2913 | . add %r12,%r11,%r12 | |
2914 | . mtctr %r12 | |
2915 | . bctr | |
2916 | ||
2917 | ppc_stub_plt_call_notoc: | |
2918 | . mflr %r12 | |
2919 | . bcl 20,31,1f | |
2920 | . 1: | |
2921 | . mflr %r11 | |
2922 | . mtlr %r12 | |
2923 | . lis %r12,xxx-1b@highest | |
f891966f | 2924 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2925 | . sldi %r12,%r12,32 |
f891966f | 2926 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2927 | . ori %r12,%r12,xxx-1b@l |
2928 | . ldx %r12,%r11,%r12 | |
2929 | . mtctr %r12 | |
2930 | . bctr | |
2931 | ||
7c1f4227 | 2932 | There are also ELFv1 power10 variants of these stubs. |
04bdff6a | 2933 | ppc_stub_long_branch_notoc: |
d4b87b1e | 2934 | . pla %r12,dest@pcrel |
04bdff6a AM |
2935 | . b dest |
2936 | ppc_stub_plt_branch_notoc: | |
2937 | . lis %r11,(dest-1f)@highesta34 | |
2938 | . ori %r11,%r11,(dest-1f)@highera34 | |
2939 | . sldi %r11,%r11,34 | |
d4b87b1e | 2940 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2941 | . add %r12,%r11,%r12 |
2942 | . mtctr %r12 | |
2943 | . bctr | |
2944 | ppc_stub_plt_call_notoc: | |
2945 | . lis %r11,(xxx-1f)@highesta34 | |
2946 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2947 | . sldi %r11,%r11,34 | |
d4b87b1e | 2948 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2949 | . ldx %r12,%r11,%r12 |
2950 | . mtctr %r12 | |
2951 | . bctr | |
2952 | ||
05d0e962 AM |
2953 | In cases where the high instructions would add zero, they are |
2954 | omitted and following instructions modified in some cases. | |
7c1f4227 | 2955 | For example, a power10 ppc_stub_plt_call_notoc might simplify down |
04bdff6a AM |
2956 | to |
2957 | . pld %r12,xxx@pcrel | |
2958 | . mtctr %r12 | |
2959 | . bctr | |
05d0e962 AM |
2960 | |
2961 | For a given stub group (a set of sections all using the same toc | |
2962 | pointer value) there will be just one stub type used for any | |
2963 | particular function symbol. For example, if printf is called from | |
2964 | code with the tocsave optimization (ie. r2 saved in function | |
2965 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2966 | and from other code without the tocsave optimization requiring a | |
2967 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2968 | type will be created. Calls with the tocsave optimization will | |
2969 | enter this stub after the instruction saving r2. A similar | |
2970 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2971 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2972 | to call an external function like printf. If other calls to printf | |
2973 | require a ppc_stub_plt_call linkage stub then a single | |
2974 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2975 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2976 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2977 | be created and calls not requiring r2 to be saved will enter the | |
2978 | stub after the r2 save instruction. There is an analogous | |
2979 | hierarchy of long branch and plt branch stubs for local call | |
2980 | linkage. */ | |
721956f4 | 2981 | |
2cdcc330 AM |
2982 | enum ppc_stub_type |
2983 | { | |
721956f4 AM |
2984 | ppc_stub_none, |
2985 | ppc_stub_long_branch, | |
ad8e1ba5 | 2986 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2987 | ppc_stub_long_branch_notoc, |
2988 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2989 | ppc_stub_plt_branch, |
ad8e1ba5 | 2990 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2991 | ppc_stub_plt_branch_notoc, |
2992 | ppc_stub_plt_branch_both, | |
794e51c0 | 2993 | ppc_stub_plt_call, |
7341d5e2 | 2994 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2995 | ppc_stub_plt_call_notoc, |
2996 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
2997 | ppc_stub_global_entry, |
2998 | ppc_stub_save_res | |
721956f4 AM |
2999 | }; |
3000 | ||
6f20ed8a AM |
3001 | /* Information on stub grouping. */ |
3002 | struct map_stub | |
3003 | { | |
3004 | /* The stub section. */ | |
3005 | asection *stub_sec; | |
3006 | /* This is the section to which stubs in the group will be attached. */ | |
3007 | asection *link_sec; | |
a4b6fadd AM |
3008 | /* Next group. */ |
3009 | struct map_stub *next; | |
3010 | /* Whether to emit a copy of register save/restore functions in this | |
3011 | group. */ | |
3012 | int needs_save_res; | |
df136d64 AM |
3013 | /* Current offset within stubs after the insn restoring lr in a |
3014 | _notoc or _both stub using bcl for pc-relative addressing, or | |
3015 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
3016 | unsigned int lr_restore; | |
3017 | /* Accumulated size of EH info emitted to describe return address | |
3018 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
3019 | unsigned int eh_size; | |
3020 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
3021 | unsigned int eh_base; | |
6f20ed8a AM |
3022 | }; |
3023 | ||
2cdcc330 AM |
3024 | struct ppc_stub_hash_entry |
3025 | { | |
721956f4 AM |
3026 | /* Base hash table entry structure. */ |
3027 | struct bfd_hash_entry root; | |
3028 | ||
ad8e1ba5 AM |
3029 | enum ppc_stub_type stub_type; |
3030 | ||
6f20ed8a AM |
3031 | /* Group information. */ |
3032 | struct map_stub *group; | |
721956f4 AM |
3033 | |
3034 | /* Offset within stub_sec of the beginning of this stub. */ | |
3035 | bfd_vma stub_offset; | |
3036 | ||
3037 | /* Given the symbol's value and its section we can determine its final | |
3038 | value when building the stubs (so the stub knows where to jump. */ | |
3039 | bfd_vma target_value; | |
3040 | asection *target_section; | |
3041 | ||
721956f4 AM |
3042 | /* The symbol table entry, if any, that this was derived from. */ |
3043 | struct ppc_link_hash_entry *h; | |
e054468f | 3044 | struct plt_entry *plt_ent; |
721956f4 | 3045 | |
2d7ad24e AM |
3046 | /* Symbol type. */ |
3047 | unsigned char symtype; | |
3048 | ||
6911b7dc AM |
3049 | /* Symbol st_other. */ |
3050 | unsigned char other; | |
721956f4 AM |
3051 | }; |
3052 | ||
2cdcc330 AM |
3053 | struct ppc_branch_hash_entry |
3054 | { | |
721956f4 AM |
3055 | /* Base hash table entry structure. */ |
3056 | struct bfd_hash_entry root; | |
3057 | ||
c456f082 | 3058 | /* Offset within branch lookup table. */ |
721956f4 AM |
3059 | unsigned int offset; |
3060 | ||
3061 | /* Generation marker. */ | |
3062 | unsigned int iter; | |
3063 | }; | |
65f38f15 | 3064 | |
19e08130 AM |
3065 | /* Used to track dynamic relocations for local symbols. */ |
3066 | struct ppc_dyn_relocs | |
3067 | { | |
3068 | struct ppc_dyn_relocs *next; | |
3069 | ||
3070 | /* The input section of the reloc. */ | |
3071 | asection *sec; | |
3072 | ||
3073 | /* Total number of relocs copied for the input section. */ | |
3074 | unsigned int count : 31; | |
3075 | ||
3076 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3077 | unsigned int ifunc : 1; | |
3078 | }; | |
3079 | ||
65f38f15 AM |
3080 | struct ppc_link_hash_entry |
3081 | { | |
3082 | struct elf_link_hash_entry elf; | |
3083 | ||
2cdcc330 AM |
3084 | union |
3085 | { | |
b3fac117 AM |
3086 | /* A pointer to the most recently used stub hash entry against this |
3087 | symbol. */ | |
3088 | struct ppc_stub_hash_entry *stub_cache; | |
3089 | ||
3090 | /* A pointer to the next symbol starting with a '.' */ | |
3091 | struct ppc_link_hash_entry *next_dot_sym; | |
3092 | } u; | |
721956f4 | 3093 | |
721956f4 | 3094 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3095 | struct ppc_link_hash_entry *oh; |
721956f4 | 3096 | |
e86ce104 AM |
3097 | /* Flag function code and descriptor symbols. */ |
3098 | unsigned int is_func:1; | |
3099 | unsigned int is_func_descriptor:1; | |
908b32fc | 3100 | unsigned int fake:1; |
411e1bfb | 3101 | |
c5614fa4 AM |
3102 | /* Whether global opd/toc sym has been adjusted or not. |
3103 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3104 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3105 | unsigned int adjust_done:1; |
3106 | ||
a4b6fadd AM |
3107 | /* Set if this is an out-of-line register save/restore function, |
3108 | with non-standard calling convention. */ | |
3109 | unsigned int save_res:1; | |
3110 | ||
8b5f1ed8 AM |
3111 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3112 | even when the duplicate symbol does not provide a definition. */ | |
3113 | unsigned int non_zero_localentry:1; | |
3114 | ||
411e1bfb | 3115 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3116 | Bits are or'd into the mask as the corresponding relocs are |
3117 | encountered during check_relocs, with TLS_TLS being set when any | |
3118 | of the other TLS bits are set. tls_optimize clears bits when | |
3119 | optimizing to indicate the corresponding GOT entry type is not | |
3120 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 3121 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
3122 | These flags are also kept for local symbols. */ |
3123 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3124 | #define TLS_GD 2 /* GD reloc. */ | |
3125 | #define TLS_LD 4 /* LD reloc. */ | |
3126 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3127 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3128 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 3129 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
46e9995a | 3130 | #define TLS_EXPLICIT 256 /* TOC section TLS reloc, not stored. */ |
f961d9dd | 3131 | unsigned char tls_mask; |
37da22e5 AM |
3132 | |
3133 | /* The above field is also used to mark function symbols. In which | |
3134 | case TLS_TLS will be 0. */ | |
3135 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3136 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3137 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3138 | }; |
3139 | ||
ed7007c1 AM |
3140 | static inline struct ppc_link_hash_entry * |
3141 | ppc_elf_hash_entry (struct elf_link_hash_entry *ent) | |
3142 | { | |
3143 | return (struct ppc_link_hash_entry *) ent; | |
3144 | } | |
3145 | ||
65f38f15 AM |
3146 | /* ppc64 ELF linker hash table. */ |
3147 | ||
3148 | struct ppc_link_hash_table | |
3149 | { | |
3150 | struct elf_link_hash_table elf; | |
3151 | ||
721956f4 AM |
3152 | /* The stub hash table. */ |
3153 | struct bfd_hash_table stub_hash_table; | |
3154 | ||
3155 | /* Another hash table for plt_branch stubs. */ | |
3156 | struct bfd_hash_table branch_hash_table; | |
3157 | ||
3b421ab3 AM |
3158 | /* Hash table for function prologue tocsave. */ |
3159 | htab_t tocsave_htab; | |
3160 | ||
e7d1c40c AM |
3161 | /* Various options and other info passed from the linker. */ |
3162 | struct ppc64_elf_params *params; | |
721956f4 | 3163 | |
6f20ed8a AM |
3164 | /* The size of sec_info below. */ |
3165 | unsigned int sec_info_arr_size; | |
3166 | ||
3167 | /* Per-section array of extra section info. Done this way rather | |
3168 | than as part of ppc64_elf_section_data so we have the info for | |
3169 | non-ppc64 sections. */ | |
3170 | struct | |
3171 | { | |
3172 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3173 | bfd_vma toc_off; |
6f20ed8a AM |
3174 | |
3175 | union | |
3176 | { | |
3177 | /* The section group that this section belongs to. */ | |
3178 | struct map_stub *group; | |
3179 | /* A temp section list pointer. */ | |
3180 | asection *list; | |
3181 | } u; | |
3182 | } *sec_info; | |
721956f4 | 3183 | |
a4b6fadd AM |
3184 | /* Linked list of groups. */ |
3185 | struct map_stub *group; | |
3186 | ||
ad8e1ba5 AM |
3187 | /* Temp used when calculating TOC pointers. */ |
3188 | bfd_vma toc_curr; | |
bf102f86 AM |
3189 | bfd *toc_bfd; |
3190 | asection *toc_first_sec; | |
ad8e1ba5 | 3191 | |
b3fac117 AM |
3192 | /* Used when adding symbols. */ |
3193 | struct ppc_link_hash_entry *dot_syms; | |
3194 | ||
33e44f2e | 3195 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3196 | asection *glink; |
9e390558 | 3197 | asection *global_entry; |
82bd7b59 | 3198 | asection *sfpr; |
2d7ad24e AM |
3199 | asection *pltlocal; |
3200 | asection *relpltlocal; | |
4ce794b7 AM |
3201 | asection *brlt; |
3202 | asection *relbrlt; | |
58d180e8 | 3203 | asection *glink_eh_frame; |
ec338859 | 3204 | |
8387904d AM |
3205 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3206 | struct ppc_link_hash_entry *tls_get_addr; | |
3207 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
9e7028aa AM |
3208 | struct ppc_link_hash_entry *tga_desc; |
3209 | struct ppc_link_hash_entry *tga_desc_fd; | |
a804e476 | 3210 | struct map_stub *tga_group; |
411e1bfb | 3211 | |
927be08e AM |
3212 | /* The size of reliplt used by got entry relocs. */ |
3213 | bfd_size_type got_reli_size; | |
3214 | ||
9b5ecbd0 | 3215 | /* Statistics. */ |
7341d5e2 | 3216 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3217 | |
ee75fd95 AM |
3218 | /* Number of stubs against global syms. */ |
3219 | unsigned long stub_globals; | |
3220 | ||
ee67d69a AM |
3221 | /* Set if we're linking code with function descriptors. */ |
3222 | unsigned int opd_abi:1; | |
3223 | ||
4c52953f | 3224 | /* Support for multiple toc sections. */ |
33c0ec9d | 3225 | unsigned int do_multi_toc:1; |
4c52953f | 3226 | unsigned int multi_toc_needed:1; |
927be08e | 3227 | unsigned int second_toc_pass:1; |
67f0cbdb | 3228 | unsigned int do_toc_opt:1; |
4c52953f | 3229 | |
9a23f96e AM |
3230 | /* Set if tls optimization is enabled. */ |
3231 | unsigned int do_tls_opt:1; | |
3232 | ||
3e04d765 AM |
3233 | /* Set if inline plt calls should be converted to direct calls. */ |
3234 | unsigned int can_convert_all_inline_plt:1; | |
3235 | ||
5d1634d7 | 3236 | /* Set on error. */ |
99877b66 | 3237 | unsigned int stub_error:1; |
721956f4 | 3238 | |
8c5b4e52 AM |
3239 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3240 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3241 | |
82e66161 AM |
3242 | /* Whether there exist local gnu indirect function resolvers, |
3243 | referenced by dynamic relocations. */ | |
3244 | unsigned int local_ifunc_resolver:1; | |
3245 | unsigned int maybe_local_ifunc_resolver:1; | |
3246 | ||
f378ab09 AM |
3247 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3248 | unsigned int has_plt_localentry0:1; | |
3249 | ||
5663e321 AM |
3250 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3251 | unsigned int notoc_plt:1; | |
3252 | ||
7c1f4227 AM |
3253 | /* Whether to use power10 instructions in linkage stubs. */ |
3254 | unsigned int power10_stubs:1; | |
04bdff6a | 3255 | |
721956f4 AM |
3256 | /* Incremented every time we size stubs. */ |
3257 | unsigned int stub_iteration; | |
5d1634d7 | 3258 | |
87d72d41 AM |
3259 | /* Small local sym cache. */ |
3260 | struct sym_cache sym_cache; | |
65f38f15 AM |
3261 | }; |
3262 | ||
4c52953f AM |
3263 | /* Rename some of the generic section flags to better document how they |
3264 | are used here. */ | |
b0dddeec AM |
3265 | |
3266 | /* Nonzero if this section has TLS related relocations. */ | |
3267 | #define has_tls_reloc sec_flg0 | |
3268 | ||
9737e8af AM |
3269 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3270 | relocations. */ | |
3271 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3272 | |
3273 | /* Nonzero if this section has any toc or got relocs. */ | |
3274 | #define has_toc_reloc sec_flg2 | |
3275 | ||
3276 | /* Nonzero if this section has a call to another section that uses | |
3277 | the toc or got. */ | |
d77c8a4b | 3278 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3279 | |
3280 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3281 | #define call_check_in_progress sec_flg4 |
70cc837d | 3282 | #define call_check_done sec_flg5 |
4c52953f | 3283 | |
65f38f15 AM |
3284 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3285 | ||
3286 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3287 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3288 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3289 | |
721956f4 AM |
3290 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3291 | ((struct ppc_stub_hash_entry *) \ | |
3292 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3293 | ||
3294 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3295 | ((struct ppc_branch_hash_entry *) \ | |
3296 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3297 | ||
3298 | /* Create an entry in the stub hash table. */ | |
3299 | ||
3300 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3301 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3302 | struct bfd_hash_table *table, | |
3303 | const char *string) | |
721956f4 AM |
3304 | { |
3305 | /* Allocate the structure if it has not already been allocated by a | |
3306 | subclass. */ | |
3307 | if (entry == NULL) | |
3308 | { | |
3309 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3310 | if (entry == NULL) | |
3311 | return entry; | |
3312 | } | |
3313 | ||
3314 | /* Call the allocation method of the superclass. */ | |
3315 | entry = bfd_hash_newfunc (entry, table, string); | |
3316 | if (entry != NULL) | |
3317 | { | |
3318 | struct ppc_stub_hash_entry *eh; | |
3319 | ||
3320 | /* Initialize the local fields. */ | |
3321 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3322 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3323 | eh->group = NULL; |
721956f4 AM |
3324 | eh->stub_offset = 0; |
3325 | eh->target_value = 0; | |
3326 | eh->target_section = NULL; | |
721956f4 | 3327 | eh->h = NULL; |
6911b7dc | 3328 | eh->plt_ent = NULL; |
6911b7dc | 3329 | eh->other = 0; |
721956f4 AM |
3330 | } |
3331 | ||
3332 | return entry; | |
3333 | } | |
3334 | ||
3335 | /* Create an entry in the branch hash table. */ | |
3336 | ||
3337 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3338 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3339 | struct bfd_hash_table *table, | |
3340 | const char *string) | |
721956f4 AM |
3341 | { |
3342 | /* Allocate the structure if it has not already been allocated by a | |
3343 | subclass. */ | |
3344 | if (entry == NULL) | |
3345 | { | |
3346 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3347 | if (entry == NULL) | |
3348 | return entry; | |
3349 | } | |
3350 | ||
3351 | /* Call the allocation method of the superclass. */ | |
3352 | entry = bfd_hash_newfunc (entry, table, string); | |
3353 | if (entry != NULL) | |
3354 | { | |
3355 | struct ppc_branch_hash_entry *eh; | |
3356 | ||
3357 | /* Initialize the local fields. */ | |
3358 | eh = (struct ppc_branch_hash_entry *) entry; | |
3359 | eh->offset = 0; | |
3360 | eh->iter = 0; | |
3361 | } | |
3362 | ||
3363 | return entry; | |
3364 | } | |
3365 | ||
65f38f15 AM |
3366 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3367 | ||
3368 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3369 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3370 | struct bfd_hash_table *table, | |
3371 | const char *string) | |
65f38f15 AM |
3372 | { |
3373 | /* Allocate the structure if it has not already been allocated by a | |
3374 | subclass. */ | |
3375 | if (entry == NULL) | |
3376 | { | |
3377 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3378 | if (entry == NULL) | |
3379 | return entry; | |
3380 | } | |
3381 | ||
3382 | /* Call the allocation method of the superclass. */ | |
3383 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3384 | if (entry != NULL) | |
3385 | { | |
3386 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3387 | ||
b3fac117 | 3388 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3389 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3390 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3391 | ||
3392 | /* When making function calls, old ABI code references function entry | |
3393 | points (dot symbols), while new ABI code references the function | |
3394 | descriptor symbol. We need to make any combination of reference and | |
3395 | definition work together, without breaking archive linking. | |
3396 | ||
3397 | For a defined function "foo" and an undefined call to "bar": | |
3398 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3399 | "bar" too). | |
3400 | A new object defines "foo" and references "bar". | |
3401 | ||
3402 | A new object thus has no problem with its undefined symbols being | |
3403 | satisfied by definitions in an old object. On the other hand, the | |
3404 | old object won't have ".bar" satisfied by a new object. | |
3405 | ||
3406 | Keep a list of newly added dot-symbols. */ | |
3407 | ||
3408 | if (string[0] == '.') | |
3409 | { | |
3410 | struct ppc_link_hash_table *htab; | |
3411 | ||
3412 | htab = (struct ppc_link_hash_table *) table; | |
3413 | eh->u.next_dot_sym = htab->dot_syms; | |
3414 | htab->dot_syms = eh; | |
3415 | } | |
65f38f15 AM |
3416 | } |
3417 | ||
3418 | return entry; | |
3419 | } | |
3420 | ||
2cdcc330 AM |
3421 | struct tocsave_entry |
3422 | { | |
3b421ab3 AM |
3423 | asection *sec; |
3424 | bfd_vma offset; | |
3425 | }; | |
3426 | ||
3427 | static hashval_t | |
3428 | tocsave_htab_hash (const void *p) | |
3429 | { | |
3430 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3431 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3432 | } |
3433 | ||
3434 | static int | |
3435 | tocsave_htab_eq (const void *p1, const void *p2) | |
3436 | { | |
3437 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3438 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3439 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3440 | } | |
3441 | ||
68faa637 AM |
3442 | /* Destroy a ppc64 ELF linker hash table. */ |
3443 | ||
3444 | static void | |
d495ab0d | 3445 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3446 | { |
d495ab0d | 3447 | struct ppc_link_hash_table *htab; |
68faa637 | 3448 | |
d495ab0d | 3449 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3450 | if (htab->tocsave_htab) |
3451 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3452 | bfd_hash_table_free (&htab->branch_hash_table); |
3453 | bfd_hash_table_free (&htab->stub_hash_table); | |
3454 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3455 | } |
3456 | ||
65f38f15 AM |
3457 | /* Create a ppc64 ELF linker hash table. */ |
3458 | ||
3459 | static struct bfd_link_hash_table * | |
4ce794b7 | 3460 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3461 | { |
3462 | struct ppc_link_hash_table *htab; | |
986f0783 | 3463 | size_t amt = sizeof (struct ppc_link_hash_table); |
65f38f15 | 3464 | |
4ce794b7 | 3465 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3466 | if (htab == NULL) |
3467 | return NULL; | |
3468 | ||
66eb6687 | 3469 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3470 | sizeof (struct ppc_link_hash_entry), |
3471 | PPC64_ELF_DATA)) | |
65f38f15 | 3472 | { |
e2d34d7d | 3473 | free (htab); |
65f38f15 AM |
3474 | return NULL; |
3475 | } | |
3476 | ||
721956f4 | 3477 | /* Init the stub hash table too. */ |
66eb6687 AM |
3478 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3479 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3480 | { |
d495ab0d | 3481 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3482 | return NULL; |
3483 | } | |
721956f4 AM |
3484 | |
3485 | /* And the branch hash table. */ | |
66eb6687 AM |
3486 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3487 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3488 | { |
3489 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3490 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3491 | return NULL; |
3492 | } | |
721956f4 | 3493 | |
3b421ab3 AM |
3494 | htab->tocsave_htab = htab_try_create (1024, |
3495 | tocsave_htab_hash, | |
3496 | tocsave_htab_eq, | |
3497 | NULL); | |
3498 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3499 | { |
d495ab0d | 3500 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3501 | return NULL; |
3502 | } | |
d495ab0d | 3503 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3504 | |
3254fd24 AM |
3505 | /* Initializing two fields of the union is just cosmetic. We really |
3506 | only care about glist, but when compiled on a 32-bit host the | |
3507 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3508 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3509 | htab->elf.init_got_refcount.refcount = 0; |
3510 | htab->elf.init_got_refcount.glist = NULL; | |
3511 | htab->elf.init_plt_refcount.refcount = 0; | |
3512 | htab->elf.init_plt_refcount.glist = NULL; | |
3513 | htab->elf.init_got_offset.offset = 0; | |
3514 | htab->elf.init_got_offset.glist = NULL; | |
3515 | htab->elf.init_plt_offset.offset = 0; | |
3516 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3517 | |
65f38f15 AM |
3518 | return &htab->elf.root; |
3519 | } | |
3520 | ||
bfeb4a28 AM |
3521 | /* Create sections for linker generated code. */ |
3522 | ||
3523 | static bfd_boolean | |
3524 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3525 | { | |
3526 | struct ppc_link_hash_table *htab; | |
3527 | flagword flags; | |
3528 | ||
3529 | htab = ppc_hash_table (info); | |
3530 | ||
bfeb4a28 AM |
3531 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3532 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3533 | if (htab->params->save_restore_funcs) |
3534 | { | |
3535 | /* Create .sfpr for code to save and restore fp regs. */ | |
3536 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3537 | flags); | |
3538 | if (htab->sfpr == NULL | |
fd361982 | 3539 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
b32547cd AM |
3540 | return FALSE; |
3541 | } | |
3542 | ||
3543 | if (bfd_link_relocatable (info)) | |
3544 | return TRUE; | |
bfeb4a28 AM |
3545 | |
3546 | /* Create .glink for lazy dynamic linking support. */ | |
3547 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3548 | flags); | |
3549 | if (htab->glink == NULL | |
fd361982 | 3550 | || !bfd_set_section_alignment (htab->glink, 3)) |
bfeb4a28 AM |
3551 | return FALSE; |
3552 | ||
9e390558 AM |
3553 | /* The part of .glink used by global entry stubs, separate so that |
3554 | it can be aligned appropriately without affecting htab->glink. */ | |
3555 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3556 | flags); | |
3557 | if (htab->global_entry == NULL | |
fd361982 | 3558 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
9e390558 AM |
3559 | return FALSE; |
3560 | ||
bfeb4a28 AM |
3561 | if (!info->no_ld_generated_unwind_info) |
3562 | { | |
3563 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3564 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3565 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3566 | ".eh_frame", | |
3567 | flags); | |
3568 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3569 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
bfeb4a28 AM |
3570 | return FALSE; |
3571 | } | |
3572 | ||
3573 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3574 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3575 | if (htab->elf.iplt == NULL | |
fd361982 | 3576 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
bfeb4a28 AM |
3577 | return FALSE; |
3578 | ||
3579 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3580 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3581 | htab->elf.irelplt |
3582 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3583 | if (htab->elf.irelplt == NULL | |
fd361982 | 3584 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3585 | return FALSE; |
3586 | ||
3587 | /* Create branch lookup table for plt_branch stubs. */ | |
3588 | flags = (SEC_ALLOC | SEC_LOAD | |
3589 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3590 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3591 | flags); | |
3592 | if (htab->brlt == NULL | |
fd361982 | 3593 | || !bfd_set_section_alignment (htab->brlt, 3)) |
bfeb4a28 AM |
3594 | return FALSE; |
3595 | ||
2d7ad24e AM |
3596 | /* Local plt entries, put in .branch_lt but a separate section for |
3597 | convenience. */ | |
3598 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3599 | flags); | |
3600 | if (htab->pltlocal == NULL | |
fd361982 | 3601 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
2d7ad24e AM |
3602 | return FALSE; |
3603 | ||
0e1862bb | 3604 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3605 | return TRUE; |
3606 | ||
3607 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3608 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3609 | htab->relbrlt |
3610 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3611 | if (htab->relbrlt == NULL |
fd361982 | 3612 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
bfeb4a28 AM |
3613 | return FALSE; |
3614 | ||
2d7ad24e AM |
3615 | htab->relpltlocal |
3616 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3617 | if (htab->relpltlocal == NULL | |
fd361982 | 3618 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
2d7ad24e AM |
3619 | return FALSE; |
3620 | ||
bfeb4a28 AM |
3621 | return TRUE; |
3622 | } | |
3623 | ||
e717da7e AM |
3624 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3625 | ||
bfeb4a28 | 3626 | bfd_boolean |
e7d1c40c AM |
3627 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3628 | struct ppc64_elf_params *params) | |
e717da7e AM |
3629 | { |
3630 | struct ppc_link_hash_table *htab; | |
3631 | ||
e7d1c40c | 3632 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3633 | |
3634 | /* Always hook our dynamic sections into the first bfd, which is the | |
3635 | linker created stub bfd. This ensures that the GOT header is at | |
3636 | the start of the output TOC section. */ | |
3637 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3638 | htab->elf.dynobj = params->stub_bfd; |
3639 | htab->params = params; | |
bfeb4a28 | 3640 | |
bfeb4a28 | 3641 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3642 | } |
3643 | ||
721956f4 AM |
3644 | /* Build a name for an entry in the stub hash table. */ |
3645 | ||
3646 | static char * | |
4ce794b7 AM |
3647 | ppc_stub_name (const asection *input_section, |
3648 | const asection *sym_sec, | |
3649 | const struct ppc_link_hash_entry *h, | |
3650 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3651 | { |
3652 | char *stub_name; | |
bcaa2f82 | 3653 | ssize_t len; |
721956f4 AM |
3654 | |
3655 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3656 | offsets from a sym as a branch target? In fact, we could | |
3657 | probably assume the addend is always zero. */ | |
3658 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3659 | ||
3660 | if (h) | |
3661 | { | |
3662 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3663 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3664 | if (stub_name == NULL) |
3665 | return stub_name; | |
3666 | ||
bcaa2f82 AM |
3667 | len = sprintf (stub_name, "%08x.%s+%x", |
3668 | input_section->id & 0xffffffff, | |
3669 | h->elf.root.root.string, | |
3670 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3671 | } |
3672 | else | |
3673 | { | |
ad8e1ba5 | 3674 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3675 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3676 | if (stub_name == NULL) |
3677 | return stub_name; | |
3678 | ||
bcaa2f82 AM |
3679 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3680 | input_section->id & 0xffffffff, | |
3681 | sym_sec->id & 0xffffffff, | |
3682 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3683 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3684 | } |
bcaa2f82 | 3685 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3686 | stub_name[len - 2] = 0; |
721956f4 AM |
3687 | return stub_name; |
3688 | } | |
3689 | ||
3690 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3691 | creating the stub name takes a bit of time. */ | |
3692 | ||
3693 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3694 | ppc_get_stub_entry (const asection *input_section, |
3695 | const asection *sym_sec, | |
039b3fef | 3696 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3697 | const Elf_Internal_Rela *rel, |
3698 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3699 | { |
3700 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3701 | struct map_stub *group; |
721956f4 AM |
3702 | |
3703 | /* If this input section is part of a group of sections sharing one | |
3704 | stub section, then use the id of the first section in the group. | |
3705 | Stub names need to include a section id, as there may well be | |
3706 | more than one stub used to reach say, printf, and we need to | |
3707 | distinguish between them. */ | |
6f20ed8a | 3708 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3709 | if (group == NULL) |
3710 | return NULL; | |
721956f4 | 3711 | |
b3fac117 AM |
3712 | if (h != NULL && h->u.stub_cache != NULL |
3713 | && h->u.stub_cache->h == h | |
6f20ed8a | 3714 | && h->u.stub_cache->group == group) |
721956f4 | 3715 | { |
b3fac117 | 3716 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3717 | } |
3718 | else | |
3719 | { | |
3720 | char *stub_name; | |
3721 | ||
6f20ed8a | 3722 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3723 | if (stub_name == NULL) |
3724 | return NULL; | |
3725 | ||
3726 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3727 | stub_name, FALSE, FALSE); |
721956f4 | 3728 | if (h != NULL) |
b3fac117 | 3729 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3730 | |
3731 | free (stub_name); | |
3732 | } | |
3733 | ||
3734 | return stub_entry; | |
3735 | } | |
3736 | ||
3737 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3738 | stub entry are initialised. */ | |
3739 | ||
3740 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3741 | ppc_add_stub (const char *stub_name, |
3742 | asection *section, | |
25f53a85 | 3743 | struct bfd_link_info *info) |
721956f4 | 3744 | { |
25f53a85 | 3745 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3746 | struct map_stub *group; |
721956f4 AM |
3747 | asection *link_sec; |
3748 | asection *stub_sec; | |
3749 | struct ppc_stub_hash_entry *stub_entry; | |
3750 | ||
6f20ed8a AM |
3751 | group = htab->sec_info[section->id].u.group; |
3752 | link_sec = group->link_sec; | |
3753 | stub_sec = group->stub_sec; | |
721956f4 AM |
3754 | if (stub_sec == NULL) |
3755 | { | |
6f20ed8a AM |
3756 | size_t namelen; |
3757 | bfd_size_type len; | |
3758 | char *s_name; | |
721956f4 | 3759 | |
6f20ed8a AM |
3760 | namelen = strlen (link_sec->name); |
3761 | len = namelen + sizeof (STUB_SUFFIX); | |
3762 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3763 | if (s_name == NULL) | |
3764 | return NULL; | |
721956f4 | 3765 | |
6f20ed8a AM |
3766 | memcpy (s_name, link_sec->name, namelen); |
3767 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3768 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3769 | if (stub_sec == NULL) | |
3770 | return NULL; | |
3771 | group->stub_sec = stub_sec; | |
721956f4 AM |
3772 | } |
3773 | ||
3774 | /* Enter this entry into the linker stub hash table. */ | |
3775 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3776 | TRUE, FALSE); |
721956f4 AM |
3777 | if (stub_entry == NULL) |
3778 | { | |
695344c0 | 3779 | /* xgettext:c-format */ |
cf97bcb0 AM |
3780 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3781 | section->owner, stub_name); | |
721956f4 AM |
3782 | return NULL; |
3783 | } | |
3784 | ||
6f20ed8a | 3785 | stub_entry->group = group; |
721956f4 | 3786 | stub_entry->stub_offset = 0; |
721956f4 AM |
3787 | return stub_entry; |
3788 | } | |
3789 | ||
e717da7e AM |
3790 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3791 | not already done. */ | |
65f38f15 | 3792 | |
b34976b6 | 3793 | static bfd_boolean |
e717da7e | 3794 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3795 | { |
e717da7e AM |
3796 | asection *got, *relgot; |
3797 | flagword flags; | |
3798 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3799 | |
0c8d6e5c | 3800 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3801 | return FALSE; |
4dfe6ac6 NC |
3802 | if (htab == NULL) |
3803 | return FALSE; | |
0ffa91dd | 3804 | |
33e44f2e AM |
3805 | if (!htab->elf.sgot |
3806 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3807 | return FALSE; | |
e717da7e AM |
3808 | |
3809 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3810 | | SEC_LINKER_CREATED); | |
3811 | ||
c456f082 | 3812 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3813 | if (!got |
fd361982 | 3814 | || !bfd_set_section_alignment (got, 3)) |
e717da7e | 3815 | return FALSE; |
65f38f15 | 3816 | |
c456f082 AM |
3817 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3818 | flags | SEC_READONLY); | |
e717da7e | 3819 | if (!relgot |
fd361982 | 3820 | || !bfd_set_section_alignment (relgot, 3)) |
b34976b6 | 3821 | return FALSE; |
e717da7e AM |
3822 | |
3823 | ppc64_elf_tdata (abfd)->got = got; | |
3824 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3825 | return TRUE; |
65f38f15 | 3826 | } |
5bd4f169 | 3827 | |
b31867b6 AM |
3828 | /* Follow indirect and warning symbol links. */ |
3829 | ||
3830 | static inline struct bfd_link_hash_entry * | |
3831 | follow_link (struct bfd_link_hash_entry *h) | |
3832 | { | |
3833 | while (h->type == bfd_link_hash_indirect | |
3834 | || h->type == bfd_link_hash_warning) | |
3835 | h = h->u.i.link; | |
3836 | return h; | |
3837 | } | |
3838 | ||
3839 | static inline struct elf_link_hash_entry * | |
3840 | elf_follow_link (struct elf_link_hash_entry *h) | |
3841 | { | |
3842 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3843 | } | |
3844 | ||
3845 | static inline struct ppc_link_hash_entry * | |
3846 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3847 | { | |
ed7007c1 | 3848 | return ppc_elf_hash_entry (elf_follow_link (&h->elf)); |
b31867b6 AM |
3849 | } |
3850 | ||
40d16e0b AM |
3851 | /* Merge PLT info on FROM with that on TO. */ |
3852 | ||
3853 | static void | |
3854 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3855 | struct ppc_link_hash_entry *to) | |
3856 | { | |
3857 | if (from->elf.plt.plist != NULL) | |
3858 | { | |
3859 | if (to->elf.plt.plist != NULL) | |
3860 | { | |
3861 | struct plt_entry **entp; | |
3862 | struct plt_entry *ent; | |
3863 | ||
3864 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3865 | { | |
3866 | struct plt_entry *dent; | |
3867 | ||
3868 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3869 | if (dent->addend == ent->addend) | |
3870 | { | |
3871 | dent->plt.refcount += ent->plt.refcount; | |
3872 | *entp = ent->next; | |
3873 | break; | |
3874 | } | |
3875 | if (dent == NULL) | |
3876 | entp = &ent->next; | |
3877 | } | |
3878 | *entp = to->elf.plt.plist; | |
3879 | } | |
3880 | ||
3881 | to->elf.plt.plist = from->elf.plt.plist; | |
3882 | from->elf.plt.plist = NULL; | |
3883 | } | |
3884 | } | |
3885 | ||
65f38f15 AM |
3886 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3887 | ||
3888 | static void | |
fcfa13d2 AM |
3889 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3890 | struct elf_link_hash_entry *dir, | |
3891 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3892 | { |
3893 | struct ppc_link_hash_entry *edir, *eind; | |
3894 | ||
ed7007c1 AM |
3895 | edir = ppc_elf_hash_entry (dir); |
3896 | eind = ppc_elf_hash_entry (ind); | |
65f38f15 | 3897 | |
c79d6685 AM |
3898 | edir->is_func |= eind->is_func; |
3899 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3900 | edir->tls_mask |= eind->tls_mask; | |
3901 | if (eind->oh != NULL) | |
3902 | edir->oh = ppc_follow_link (eind->oh); | |
3903 | ||
474436e6 | 3904 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3905 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3906 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3907 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3908 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3909 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3910 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3911 | |
d311bc8b AM |
3912 | /* If we were called to copy over info for a weak sym, don't copy |
3913 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3914 | in order to simplify readonly_dynrelocs and save a field in the | |
3915 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3916 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3917 | are then tested. */ |
d311bc8b | 3918 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3919 | return; |
d311bc8b | 3920 | |
411e1bfb | 3921 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
190eb1dd | 3922 | if (ind->dyn_relocs != NULL) |
65f38f15 | 3923 | { |
190eb1dd | 3924 | if (dir->dyn_relocs != NULL) |
bbd7ec4a | 3925 | { |
6061a67d AM |
3926 | struct elf_dyn_relocs **pp; |
3927 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3928 | |
fcfa13d2 | 3929 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a | 3930 | list. Merge any entries against the same section. */ |
190eb1dd | 3931 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
bbd7ec4a | 3932 | { |
6061a67d | 3933 | struct elf_dyn_relocs *q; |
bbd7ec4a | 3934 | |
190eb1dd | 3935 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
bbd7ec4a AM |
3936 | if (q->sec == p->sec) |
3937 | { | |
3938 | q->pc_count += p->pc_count; | |
3939 | q->count += p->count; | |
3940 | *pp = p->next; | |
3941 | break; | |
3942 | } | |
3943 | if (q == NULL) | |
3944 | pp = &p->next; | |
3945 | } | |
190eb1dd | 3946 | *pp = dir->dyn_relocs; |
bbd7ec4a AM |
3947 | } |
3948 | ||
190eb1dd L |
3949 | dir->dyn_relocs = ind->dyn_relocs; |
3950 | ind->dyn_relocs = NULL; | |
65f38f15 | 3951 | } |
65f38f15 | 3952 | |
81848ca0 AM |
3953 | /* Copy over got entries that we may have already seen to the |
3954 | symbol which just became indirect. */ | |
411e1bfb AM |
3955 | if (eind->elf.got.glist != NULL) |
3956 | { | |
3957 | if (edir->elf.got.glist != NULL) | |
3958 | { | |
3959 | struct got_entry **entp; | |
3960 | struct got_entry *ent; | |
3961 | ||
3962 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3963 | { | |
3964 | struct got_entry *dent; | |
3965 | ||
3966 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3967 | if (dent->addend == ent->addend | |
e717da7e | 3968 | && dent->owner == ent->owner |
411e1bfb AM |
3969 | && dent->tls_type == ent->tls_type) |
3970 | { | |
3971 | dent->got.refcount += ent->got.refcount; | |
3972 | *entp = ent->next; | |
3973 | break; | |
3974 | } | |
3975 | if (dent == NULL) | |
3976 | entp = &ent->next; | |
3977 | } | |
3978 | *entp = edir->elf.got.glist; | |
3979 | } | |
3980 | ||
3981 | edir->elf.got.glist = eind->elf.got.glist; | |
3982 | eind->elf.got.glist = NULL; | |
3983 | } | |
3984 | ||
3985 | /* And plt entries. */ | |
40d16e0b | 3986 | move_plt_plist (eind, edir); |
411e1bfb | 3987 | |
fcfa13d2 | 3988 | if (eind->elf.dynindx != -1) |
411e1bfb | 3989 | { |
fcfa13d2 AM |
3990 | if (edir->elf.dynindx != -1) |
3991 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3992 | edir->elf.dynstr_index); | |
411e1bfb AM |
3993 | edir->elf.dynindx = eind->elf.dynindx; |
3994 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3995 | eind->elf.dynindx = -1; | |
3996 | eind->elf.dynstr_index = 0; | |
3997 | } | |
411e1bfb AM |
3998 | } |
3999 | ||
8387904d AM |
4000 | /* Find the function descriptor hash entry from the given function code |
4001 | hash entry FH. Link the entries via their OH fields. */ | |
4002 | ||
4003 | static struct ppc_link_hash_entry * | |
b31867b6 | 4004 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4005 | { |
4006 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4007 | ||
4008 | if (fdh == NULL) | |
4009 | { | |
4010 | const char *fd_name = fh->elf.root.root.string + 1; | |
4011 | ||
ed7007c1 AM |
4012 | fdh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, fd_name, |
4013 | FALSE, FALSE, FALSE)); | |
b31867b6 AM |
4014 | if (fdh == NULL) |
4015 | return fdh; | |
4016 | ||
4017 | fdh->is_func_descriptor = 1; | |
4018 | fdh->oh = fh; | |
4019 | fh->is_func = 1; | |
4020 | fh->oh = fdh; | |
8387904d AM |
4021 | } |
4022 | ||
8c5b4e52 AM |
4023 | fdh = ppc_follow_link (fdh); |
4024 | fdh->is_func_descriptor = 1; | |
4025 | fdh->oh = fh; | |
4026 | return fdh; | |
8387904d AM |
4027 | } |
4028 | ||
8c5b4e52 | 4029 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4030 | |
4031 | static struct ppc_link_hash_entry * | |
4032 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4033 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4034 | { |
8c5b4e52 AM |
4035 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4036 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4037 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4038 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4039 | ? BSF_WEAK | |
4040 | : BSF_GLOBAL); | |
4041 | ||
4042 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4043 | fh->elf.root.root.string + 1, | |
4044 | flags, bfd_und_section_ptr, 0, | |
4045 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
4046 | return NULL; |
4047 | ||
4048 | fdh = (struct ppc_link_hash_entry *) bh; | |
4049 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4050 | fdh->fake = 1; |
4051 | fdh->is_func_descriptor = 1; | |
4052 | fdh->oh = fh; | |
4053 | fh->is_func = 1; | |
4054 | fh->oh = fdh; | |
bb700d78 AM |
4055 | return fdh; |
4056 | } | |
4057 | ||
8387904d AM |
4058 | /* Fix function descriptor symbols defined in .opd sections to be |
4059 | function type. */ | |
555cd476 AM |
4060 | |
4061 | static bfd_boolean | |
c16153ae | 4062 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4063 | struct bfd_link_info *info, |
555cd476 | 4064 | Elf_Internal_Sym *isym, |
6911b7dc | 4065 | const char **name, |
555cd476 AM |
4066 | flagword *flags ATTRIBUTE_UNUSED, |
4067 | asection **sec, | |
b53dfeb2 | 4068 | bfd_vma *value) |
555cd476 | 4069 | { |
b53dfeb2 | 4070 | if (*sec != NULL |
f1885d1e | 4071 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4072 | { |
4073 | asection *code_sec; | |
4074 | ||
4075 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4076 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4077 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4078 | ||
4079 | /* If the symbol is a function defined in .opd, and the function | |
4080 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4081 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4082 | && (*sec)->reloc_count != 0 |
4083 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4084 | FALSE) != (bfd_vma) -1 | |
4085 | && discarded_section (code_sec)) | |
4086 | { | |
4087 | *sec = bfd_und_section_ptr; | |
4088 | isym->st_shndx = SHN_UNDEF; | |
4089 | } | |
4090 | } | |
dbd1e97e AM |
4091 | else if (*sec != NULL |
4092 | && strcmp ((*sec)->name, ".toc") == 0 | |
4093 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4094 | { | |
4095 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4096 | if (htab != NULL) | |
4097 | htab->params->object_in_toc = 1; | |
4098 | } | |
433817dd | 4099 | |
6911b7dc AM |
4100 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4101 | { | |
4102 | if (abiversion (ibfd) == 0) | |
4103 | set_abiversion (ibfd, 2); | |
4104 | else if (abiversion (ibfd) == 1) | |
4105 | { | |
cf97bcb0 AM |
4106 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4107 | " for ABI version 1"), *name); | |
6911b7dc AM |
4108 | bfd_set_error (bfd_error_bad_value); |
4109 | return FALSE; | |
4110 | } | |
4111 | } | |
4112 | ||
555cd476 AM |
4113 | return TRUE; |
4114 | } | |
4115 | ||
6911b7dc AM |
4116 | /* Merge non-visibility st_other attributes: local entry point. */ |
4117 | ||
4118 | static void | |
4119 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4120 | const Elf_Internal_Sym *isym, | |
4121 | bfd_boolean definition, | |
4122 | bfd_boolean dynamic) | |
4123 | { | |
f378ab09 | 4124 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
4125 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
4126 | | ELF_ST_VISIBILITY (h->other)); | |
4127 | } | |
4128 | ||
8c5b4e52 AM |
4129 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4130 | we now have a real symbol. */ | |
4131 | ||
4132 | static bfd_boolean | |
4133 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4134 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4135 | asection **psec ATTRIBUTE_UNUSED, |
4136 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4137 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4138 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4139 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4140 | { | |
ed7007c1 | 4141 | ppc_elf_hash_entry (h)->fake = 0; |
8b5f1ed8 | 4142 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
ed7007c1 | 4143 | ppc_elf_hash_entry (h)->non_zero_localentry = 1; |
8c5b4e52 AM |
4144 | return TRUE; |
4145 | } | |
4146 | ||
8387904d | 4147 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4148 | inclusion of a new ABI object archive that defines "bar". |
4149 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4150 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4151 | |
4152 | static struct elf_link_hash_entry * | |
4153 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4154 | struct bfd_link_info *info, | |
4155 | const char *name) | |
4156 | { | |
4157 | struct elf_link_hash_entry *h; | |
4158 | char *dot_name; | |
4159 | size_t len; | |
4160 | ||
4161 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4162 | if (h != NULL |
4163 | /* Don't return this sym if it is a fake function descriptor | |
4164 | created by add_symbol_adjust. */ | |
ed7007c1 | 4165 | && !ppc_elf_hash_entry (h)->fake) |
8387904d AM |
4166 | return h; |
4167 | ||
4168 | if (name[0] == '.') | |
4169 | return h; | |
4170 | ||
4171 | len = strlen (name); | |
4172 | dot_name = bfd_alloc (abfd, len + 2); | |
4173 | if (dot_name == NULL) | |
e99955cd | 4174 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4175 | dot_name[0] = '.'; |
4176 | memcpy (dot_name + 1, name, len + 1); | |
4177 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4178 | bfd_release (abfd, dot_name); | |
a804e476 AM |
4179 | if (h != NULL) |
4180 | return h; | |
4181 | ||
4182 | if (strcmp (name, "__tls_get_addr_opt") == 0) | |
4183 | h = _bfd_elf_archive_symbol_lookup (abfd, info, "__tls_get_addr_desc"); | |
8387904d AM |
4184 | return h; |
4185 | } | |
4186 | ||
4187 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4188 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4189 | are made weak. This stops later archive searches from including an | |
4190 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4191 | prevents the linker complaining about undefined symbols. |
4192 | We also check and correct mismatched symbol visibility here. The | |
4193 | most restrictive visibility of the function descriptor and the | |
4194 | function entry symbol is used. */ | |
8387904d AM |
4195 | |
4196 | static bfd_boolean | |
b3fac117 | 4197 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4198 | { |
8387904d AM |
4199 | struct ppc_link_hash_table *htab; |
4200 | struct ppc_link_hash_entry *fdh; | |
4201 | ||
b3fac117 AM |
4202 | if (eh->elf.root.type == bfd_link_hash_warning) |
4203 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4204 | |
8400d40d AM |
4205 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4206 | return TRUE; | |
4207 | ||
b3fac117 AM |
4208 | if (eh->elf.root.root.string[0] != '.') |
4209 | abort (); | |
8387904d | 4210 | |
b3fac117 | 4211 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4212 | if (htab == NULL) |
4213 | return FALSE; | |
4214 | ||
b31867b6 | 4215 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4216 | if (fdh == NULL |
4217 | && !bfd_link_relocatable (info) | |
4218 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4219 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4220 | && eh->elf.ref_regular) | |
4221 | { | |
4222 | /* Make an undefined function descriptor sym, in order to | |
4223 | pull in an --as-needed shared lib. Archives are handled | |
4224 | elsewhere. */ | |
4225 | fdh = make_fdh (info, eh); | |
4226 | if (fdh == NULL) | |
4227 | return FALSE; | |
bb700d78 | 4228 | } |
8c5b4e52 AM |
4229 | |
4230 | if (fdh != NULL) | |
8387904d | 4231 | { |
35b0ce59 AM |
4232 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4233 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4234 | |
4235 | /* Make both descriptor and entry symbol have the most | |
4236 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4237 | if (entry_vis < descr_vis) |
4238 | fdh->elf.other += entry_vis - descr_vis; | |
4239 | else if (entry_vis > descr_vis) | |
4240 | eh->elf.other += descr_vis - entry_vis; | |
4241 | ||
8c5b4e52 AM |
4242 | /* Propagate reference flags from entry symbol to function |
4243 | descriptor symbol. */ | |
bc4e12de | 4244 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4245 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4246 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4247 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4248 | ||
4249 | if (!fdh->elf.forced_local | |
4250 | && fdh->elf.dynindx == -1 | |
4251 | && fdh->elf.versioned != versioned_hidden | |
4252 | && (bfd_link_dll (info) | |
4253 | || fdh->elf.def_dynamic | |
4254 | || fdh->elf.ref_dynamic) | |
4255 | && (eh->elf.ref_regular | |
4256 | || eh->elf.def_regular)) | |
4257 | { | |
2cdcc330 | 4258 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4259 | return FALSE; |
35b0ce59 | 4260 | } |
8387904d | 4261 | } |
99877b66 | 4262 | |
8387904d AM |
4263 | return TRUE; |
4264 | } | |
4265 | ||
f6c7c3e8 AM |
4266 | /* Set up opd section info and abiversion for IBFD, and process list |
4267 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4268 | |
8387904d | 4269 | static bfd_boolean |
f6c7c3e8 | 4270 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4271 | { |
99877b66 | 4272 | struct ppc_link_hash_table *htab; |
b3fac117 | 4273 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4274 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4275 | |
459609d6 | 4276 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4277 | { |
b9399fcf AM |
4278 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4279 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4280 | ||
459609d6 AM |
4281 | if (abiversion (ibfd) == 0) |
4282 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4283 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4284 | { |
695344c0 | 4285 | /* xgettext:c-format */ |
cf97bcb0 AM |
4286 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4287 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4288 | bfd_set_error (bfd_error_bad_value); |
4289 | return FALSE; | |
f6c7c3e8 | 4290 | } |
b9399fcf | 4291 | } |
f6c7c3e8 | 4292 | |
b9399fcf AM |
4293 | if (is_ppc64_elf (info->output_bfd)) |
4294 | { | |
4295 | /* For input files without an explicit abiversion in e_flags | |
4296 | we should have flagged any with symbol st_other bits set | |
4297 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4298 | Set the output abiversion if not yet set, and for any input | |
4299 | still ambiguous, take its abiversion from the output. | |
4300 | Differences in ABI are reported later. */ | |
4301 | if (abiversion (info->output_bfd) == 0) | |
4302 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4303 | else if (abiversion (ibfd) == 0) | |
4304 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4305 | } |
4306 | ||
459609d6 AM |
4307 | htab = ppc_hash_table (info); |
4308 | if (htab == NULL) | |
b9399fcf | 4309 | return TRUE; |
459609d6 | 4310 | |
b9399fcf AM |
4311 | if (opd != NULL && opd->size != 0 |
4312 | && (ibfd->flags & DYNAMIC) == 0 | |
4313 | && (opd->flags & SEC_RELOC) != 0 | |
4314 | && opd->reloc_count != 0 | |
4315 | && !bfd_is_abs_section (opd->output_section) | |
4316 | && info->gc_sections) | |
4317 | { | |
4318 | /* Garbage collection needs some extra help with .opd sections. | |
4319 | We don't want to necessarily keep everything referenced by | |
4320 | relocs in .opd, as that would keep all functions. Instead, | |
4321 | if we reference an .opd symbol (a function descriptor), we | |
4322 | want to keep the function code symbol's section. This is | |
4323 | easy for global symbols, but for local syms we need to keep | |
4324 | information about the associated function section. */ | |
4325 | bfd_size_type amt; | |
4326 | asection **opd_sym_map; | |
4327 | Elf_Internal_Shdr *symtab_hdr; | |
4328 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4329 | ||
4330 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4331 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4332 | if (opd_sym_map == NULL) | |
4333 | return FALSE; | |
4334 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4335 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4336 | info->keep_memory); | |
4337 | if (relocs == NULL) | |
4338 | return FALSE; | |
4339 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4340 | rel_end = relocs + opd->reloc_count - 1; | |
4341 | for (rel = relocs; rel < rel_end; rel++) | |
4342 | { | |
4343 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4344 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4345 | ||
4346 | if (r_type == R_PPC64_ADDR64 | |
4347 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4348 | && r_symndx < symtab_hdr->sh_info) | |
4349 | { | |
4350 | Elf_Internal_Sym *isym; | |
4351 | asection *s; | |
4352 | ||
4353 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
4354 | if (isym == NULL) | |
4355 | { | |
4356 | if (elf_section_data (opd)->relocs != relocs) | |
4357 | free (relocs); | |
4358 | return FALSE; | |
4359 | } | |
4360 | ||
4361 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4362 | if (s != NULL && s != opd) | |
4363 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4364 | } | |
4365 | } | |
4366 | if (elf_section_data (opd)->relocs != relocs) | |
4367 | free (relocs); | |
4368 | } | |
459609d6 AM |
4369 | |
4370 | p = &htab->dot_syms; | |
4371 | while ((eh = *p) != NULL) | |
4372 | { | |
4373 | *p = NULL; | |
4374 | if (&eh->elf == htab->elf.hgot) | |
4375 | ; | |
4376 | else if (htab->elf.hgot == NULL | |
4377 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4378 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4379 | else if (abiversion (ibfd) <= 1) |
4380 | { | |
4381 | htab->need_func_desc_adj = 1; | |
4382 | if (!add_symbol_adjust (eh, info)) | |
4383 | return FALSE; | |
4384 | } | |
459609d6 AM |
4385 | p = &eh->u.next_dot_sym; |
4386 | } | |
b3fac117 | 4387 | return TRUE; |
8387904d AM |
4388 | } |
4389 | ||
97fed1c9 JJ |
4390 | /* Undo hash table changes when an --as-needed input file is determined |
4391 | not to be needed. */ | |
4392 | ||
4393 | static bfd_boolean | |
e5034e59 AM |
4394 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4395 | struct bfd_link_info *info, | |
4396 | enum notice_asneeded_action act) | |
97fed1c9 | 4397 | { |
e5034e59 AM |
4398 | if (act == notice_not_needed) |
4399 | { | |
4400 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4401 | |
e5034e59 AM |
4402 | if (htab == NULL) |
4403 | return FALSE; | |
4dfe6ac6 | 4404 | |
e5034e59 AM |
4405 | htab->dot_syms = NULL; |
4406 | } | |
4407 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4408 | } |
4409 | ||
aa374f67 AM |
4410 | /* If --just-symbols against a final linked binary, then assume we need |
4411 | toc adjusting stubs when calling functions defined there. */ | |
4412 | ||
4413 | static void | |
4414 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4415 | { | |
4416 | if ((sec->flags & SEC_CODE) != 0 | |
4417 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4418 | && is_ppc64_elf (sec->owner)) | |
4419 | { | |
2c3f079f AM |
4420 | if (abiversion (sec->owner) >= 2 |
4421 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4422 | sec->has_toc_reloc = 1; |
4423 | } | |
4424 | _bfd_elf_link_just_syms (sec, info); | |
4425 | } | |
4426 | ||
e054468f | 4427 | static struct plt_entry ** |
4ce794b7 AM |
4428 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4429 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4430 | { |
4431 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4432 | struct plt_entry **local_plt; |
f961d9dd | 4433 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4434 | |
4435 | if (local_got_ents == NULL) | |
4436 | { | |
4437 | bfd_size_type size = symtab_hdr->sh_info; | |
4438 | ||
e054468f AM |
4439 | size *= (sizeof (*local_got_ents) |
4440 | + sizeof (*local_plt) | |
4441 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4442 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4443 | if (local_got_ents == NULL) |
e054468f | 4444 | return NULL; |
411e1bfb AM |
4445 | elf_local_got_ents (abfd) = local_got_ents; |
4446 | } | |
4447 | ||
37da22e5 | 4448 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4449 | { |
4450 | struct got_entry *ent; | |
4451 | ||
4452 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4453 | if (ent->addend == r_addend |
4454 | && ent->owner == abfd | |
4455 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4456 | break; |
4457 | if (ent == NULL) | |
4458 | { | |
986f0783 | 4459 | size_t amt = sizeof (*ent); |
4ce794b7 | 4460 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4461 | if (ent == NULL) |
4462 | return FALSE; | |
4463 | ent->next = local_got_ents[r_symndx]; | |
4464 | ent->addend = r_addend; | |
e717da7e | 4465 | ent->owner = abfd; |
411e1bfb | 4466 | ent->tls_type = tls_type; |
927be08e | 4467 | ent->is_indirect = FALSE; |
411e1bfb AM |
4468 | ent->got.refcount = 0; |
4469 | local_got_ents[r_symndx] = ent; | |
4470 | } | |
4471 | ent->got.refcount += 1; | |
4472 | } | |
4473 | ||
e054468f | 4474 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4475 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4476 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4477 | |
4478 | return local_plt + r_symndx; | |
65f38f15 AM |
4479 | } |
4480 | ||
411e1bfb | 4481 | static bfd_boolean |
e054468f | 4482 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4483 | { |
411e1bfb | 4484 | struct plt_entry *ent; |
1e2f5b6e | 4485 | |
e054468f | 4486 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4487 | if (ent->addend == addend) |
4488 | break; | |
4489 | if (ent == NULL) | |
1e2f5b6e | 4490 | { |
986f0783 | 4491 | size_t amt = sizeof (*ent); |
4ce794b7 | 4492 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4493 | if (ent == NULL) |
4494 | return FALSE; | |
e054468f | 4495 | ent->next = *plist; |
411e1bfb AM |
4496 | ent->addend = addend; |
4497 | ent->plt.refcount = 0; | |
e054468f | 4498 | *plist = ent; |
1e2f5b6e | 4499 | } |
411e1bfb | 4500 | ent->plt.refcount += 1; |
b34976b6 | 4501 | return TRUE; |
1e2f5b6e AM |
4502 | } |
4503 | ||
e054468f AM |
4504 | static bfd_boolean |
4505 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4506 | { | |
4507 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4508 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4509 | || r_type == R_PPC64_REL14 |
4510 | || r_type == R_PPC64_REL14_BRTAKEN | |
4511 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4512 | || r_type == R_PPC64_ADDR24 | |
4513 | || r_type == R_PPC64_ADDR14 | |
4514 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4515 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4516 | || r_type == R_PPC64_PLTCALL |
4517 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4518 | } |
4519 | ||
4520 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4521 | ||
4522 | static bfd_boolean | |
4523 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4524 | { | |
4525 | return (r_type == R_PPC64_PLT16_HA | |
4526 | || r_type == R_PPC64_PLT16_HI | |
4527 | || r_type == R_PPC64_PLT16_LO | |
4528 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4529 | || r_type == R_PPC64_PLT_PCREL34 |
4530 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4531 | || r_type == R_PPC64_PLTSEQ | |
4532 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4533 | } |
4534 | ||
5bd4f169 | 4535 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4536 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4537 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4538 | |
b34976b6 | 4539 | static bfd_boolean |
4ce794b7 AM |
4540 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4541 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4542 | { |
65f38f15 | 4543 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4544 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4545 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4546 | const Elf_Internal_Rela *rel; |
4547 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4548 | asection *sreloc; |
3a71aa26 | 4549 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4550 | bfd_boolean is_opd; |
5bd4f169 | 4551 | |
0e1862bb | 4552 | if (bfd_link_relocatable (info)) |
b34976b6 | 4553 | return TRUE; |
5bd4f169 | 4554 | |
0c8d6e5c | 4555 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4556 | |
65f38f15 | 4557 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4558 | if (htab == NULL) |
4559 | return FALSE; | |
4560 | ||
3a71aa26 AM |
4561 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4562 | FALSE, FALSE, TRUE); | |
4563 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4564 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4565 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4566 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4567 | sreloc = NULL; |
b9399fcf | 4568 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4569 | rel_end = relocs + sec->reloc_count; |
4570 | for (rel = relocs; rel < rel_end; rel++) | |
4571 | { | |
4572 | unsigned long r_symndx; | |
4573 | struct elf_link_hash_entry *h; | |
04c9666a | 4574 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4575 | int tls_type; |
7c8fe5c4 | 4576 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4577 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4578 | |
4579 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4580 | if (r_symndx < symtab_hdr->sh_info) | |
4581 | h = NULL; | |
4582 | else | |
973a3492 L |
4583 | { |
4584 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4585 | h = elf_follow_link (h); |
1c865ab2 AM |
4586 | |
4587 | if (h == htab->elf.hgot) | |
4588 | sec->has_toc_reloc = 1; | |
973a3492 | 4589 | } |
5bd4f169 | 4590 | |
5663e321 AM |
4591 | r_type = ELF64_R_TYPE (rel->r_info); |
4592 | switch (r_type) | |
4593 | { | |
04bdff6a AM |
4594 | case R_PPC64_D34: |
4595 | case R_PPC64_D34_LO: | |
4596 | case R_PPC64_D34_HI30: | |
4597 | case R_PPC64_D34_HA30: | |
4598 | case R_PPC64_D28: | |
c213164a AM |
4599 | case R_PPC64_TPREL34: |
4600 | case R_PPC64_DTPREL34: | |
04bdff6a | 4601 | case R_PPC64_PCREL34: |
5663e321 | 4602 | case R_PPC64_GOT_PCREL34: |
87c69f97 AM |
4603 | case R_PPC64_GOT_TLSGD_PCREL34: |
4604 | case R_PPC64_GOT_TLSLD_PCREL34: | |
4605 | case R_PPC64_GOT_TPREL_PCREL34: | |
4606 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
4607 | case R_PPC64_PLT_PCREL34: |
4608 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a | 4609 | case R_PPC64_PCREL28: |
7c1f4227 | 4610 | htab->power10_stubs = 1; |
133a1f60 AM |
4611 | break; |
4612 | default: | |
5663e321 AM |
4613 | break; |
4614 | } | |
903b777d AM |
4615 | |
4616 | switch (r_type) | |
4617 | { | |
4618 | case R_PPC64_PLT16_HA: | |
4619 | case R_PPC64_GOT_TLSLD16_HA: | |
4620 | case R_PPC64_GOT_TLSGD16_HA: | |
4621 | case R_PPC64_GOT_TPREL16_HA: | |
4622 | case R_PPC64_GOT_DTPREL16_HA: | |
4623 | case R_PPC64_GOT16_HA: | |
4624 | case R_PPC64_TOC16_HA: | |
4625 | case R_PPC64_PLT16_LO: | |
4626 | case R_PPC64_PLT16_LO_DS: | |
4627 | case R_PPC64_GOT_TLSLD16_LO: | |
4628 | case R_PPC64_GOT_TLSGD16_LO: | |
4629 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4630 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4631 | case R_PPC64_GOT16_LO: | |
4632 | case R_PPC64_GOT16_LO_DS: | |
4633 | case R_PPC64_TOC16_LO: | |
4634 | case R_PPC64_TOC16_LO_DS: | |
4635 | case R_PPC64_GOT_PCREL34: | |
4636 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4637 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4638 | break; | |
4639 | default: | |
4640 | break; | |
4641 | } | |
4642 | ||
f749f26e | 4643 | ifunc = NULL; |
25f23106 AM |
4644 | if (h != NULL) |
4645 | { | |
4646 | if (h->type == STT_GNU_IFUNC) | |
4647 | { | |
4648 | h->needs_plt = 1; | |
4649 | ifunc = &h->plt.plist; | |
4650 | } | |
4651 | } | |
4652 | else | |
4653 | { | |
4654 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4655 | abfd, r_symndx); | |
4656 | if (isym == NULL) | |
4657 | return FALSE; | |
4658 | ||
4659 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4660 | { | |
4661 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4662 | rel->r_addend, |
37da22e5 | 4663 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4664 | if (ifunc == NULL) |
4665 | return FALSE; | |
4666 | } | |
4667 | } | |
727fc41e | 4668 | |
f749f26e | 4669 | tls_type = 0; |
a33d1f77 | 4670 | switch (r_type) |
5bd4f169 | 4671 | { |
727fc41e AM |
4672 | case R_PPC64_TLSGD: |
4673 | case R_PPC64_TLSLD: | |
4674 | /* These special tls relocs tie a call to __tls_get_addr with | |
4675 | its parameter symbol. */ | |
37da22e5 | 4676 | if (h != NULL) |
ed7007c1 | 4677 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; |
37da22e5 AM |
4678 | else |
4679 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4680 | rel->r_addend, |
37da22e5 AM |
4681 | NON_GOT | TLS_TLS | TLS_MARK)) |
4682 | return FALSE; | |
4683 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4684 | break; |
4685 | ||
411e1bfb AM |
4686 | case R_PPC64_GOT_TLSLD16: |
4687 | case R_PPC64_GOT_TLSLD16_LO: | |
4688 | case R_PPC64_GOT_TLSLD16_HI: | |
4689 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 4690 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 4691 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4692 | goto dogottls; |
4693 | ||
4694 | case R_PPC64_GOT_TLSGD16: | |
4695 | case R_PPC64_GOT_TLSGD16_LO: | |
4696 | case R_PPC64_GOT_TLSGD16_HI: | |
4697 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 4698 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 4699 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4700 | goto dogottls; |
4701 | ||
4702 | case R_PPC64_GOT_TPREL16_DS: | |
4703 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4704 | case R_PPC64_GOT_TPREL16_HI: | |
4705 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 4706 | case R_PPC64_GOT_TPREL_PCREL34: |
7c8bbca5 | 4707 | if (bfd_link_dll (info)) |
411e1bfb AM |
4708 | info->flags |= DF_STATIC_TLS; |
4709 | tls_type = TLS_TLS | TLS_TPREL; | |
4710 | goto dogottls; | |
4711 | ||
4712 | case R_PPC64_GOT_DTPREL16_DS: | |
4713 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4714 | case R_PPC64_GOT_DTPREL16_HI: | |
4715 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 4716 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
4717 | tls_type = TLS_TLS | TLS_DTPREL; |
4718 | dogottls: | |
4719 | sec->has_tls_reloc = 1; | |
066f4018 | 4720 | goto dogot; |
411e1bfb | 4721 | |
903b777d AM |
4722 | case R_PPC64_GOT16: |
4723 | case R_PPC64_GOT16_LO: | |
4724 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4725 | case R_PPC64_GOT16_HA: |
903b777d | 4726 | case R_PPC64_GOT16_DS: |
066f4018 | 4727 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4728 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4729 | dogot: |
65f38f15 | 4730 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4731 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4732 | if (r_type == R_PPC64_GOT_TLSLD16 |
4733 | || r_type == R_PPC64_GOT_TLSGD16 | |
4734 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4735 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4736 | || r_type == R_PPC64_GOT16 | |
4737 | || r_type == R_PPC64_GOT16_DS) | |
4738 | { | |
4739 | htab->do_multi_toc = 1; | |
d77c8a4b | 4740 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4741 | } |
4742 | ||
e717da7e AM |
4743 | if (ppc64_elf_tdata (abfd)->got == NULL |
4744 | && !create_got_section (abfd, info)) | |
b34976b6 | 4745 | return FALSE; |
5bd4f169 AM |
4746 | |
4747 | if (h != NULL) | |
4748 | { | |
411e1bfb AM |
4749 | struct ppc_link_hash_entry *eh; |
4750 | struct got_entry *ent; | |
65f38f15 | 4751 | |
ed7007c1 | 4752 | eh = ppc_elf_hash_entry (h); |
411e1bfb | 4753 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) |
133a1f60 | 4754 | if (ent->addend == rel->r_addend |
e717da7e | 4755 | && ent->owner == abfd |
411e1bfb AM |
4756 | && ent->tls_type == tls_type) |
4757 | break; | |
4758 | if (ent == NULL) | |
5bd4f169 | 4759 | { |
986f0783 | 4760 | size_t amt = sizeof (*ent); |
4ce794b7 | 4761 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4762 | if (ent == NULL) |
b34976b6 | 4763 | return FALSE; |
411e1bfb | 4764 | ent->next = eh->elf.got.glist; |
133a1f60 | 4765 | ent->addend = rel->r_addend; |
e717da7e | 4766 | ent->owner = abfd; |
411e1bfb | 4767 | ent->tls_type = tls_type; |
927be08e | 4768 | ent->is_indirect = FALSE; |
411e1bfb AM |
4769 | ent->got.refcount = 0; |
4770 | eh->elf.got.glist = ent; | |
5bd4f169 | 4771 | } |
411e1bfb | 4772 | ent->got.refcount += 1; |
e7b938ca | 4773 | eh->tls_mask |= tls_type; |
5bd4f169 | 4774 | } |
411e1bfb AM |
4775 | else |
4776 | /* This is a global offset table entry for a local symbol. */ | |
4777 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4778 | rel->r_addend, tls_type)) |
411e1bfb | 4779 | return FALSE; |
5bd4f169 AM |
4780 | break; |
4781 | ||
5bd4f169 | 4782 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4783 | case R_PPC64_PLT16_HI: |
4784 | case R_PPC64_PLT16_LO: | |
08be3224 | 4785 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4786 | case R_PPC64_PLT_PCREL34: |
4787 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4788 | case R_PPC64_PLT32: |
4789 | case R_PPC64_PLT64: | |
cbf95972 AM |
4790 | /* This symbol requires a procedure linkage table entry. */ |
4791 | plt_list = ifunc; | |
4792 | if (h != NULL) | |
e054468f | 4793 | { |
e054468f AM |
4794 | h->needs_plt = 1; |
4795 | if (h->root.root.string[0] == '.' | |
4796 | && h->root.root.string[1] != '\0') | |
ed7007c1 AM |
4797 | ppc_elf_hash_entry (h)->is_func = 1; |
4798 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
cbf95972 AM |
4799 | plt_list = &h->plt.plist; |
4800 | } | |
4801 | if (plt_list == NULL) | |
2d7ad24e | 4802 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 4803 | rel->r_addend, |
2d7ad24e | 4804 | NON_GOT | PLT_KEEP); |
133a1f60 | 4805 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4806 | return FALSE; |
5bd4f169 AM |
4807 | break; |
4808 | ||
4809 | /* The following relocations don't need to propagate the | |
4810 | relocation if linking a shared object since they are | |
4811 | section relative. */ | |
4812 | case R_PPC64_SECTOFF: | |
4813 | case R_PPC64_SECTOFF_LO: | |
4814 | case R_PPC64_SECTOFF_HI: | |
4815 | case R_PPC64_SECTOFF_HA: | |
4816 | case R_PPC64_SECTOFF_DS: | |
4817 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4818 | case R_PPC64_DTPREL16: |
4819 | case R_PPC64_DTPREL16_LO: | |
4820 | case R_PPC64_DTPREL16_HI: | |
4821 | case R_PPC64_DTPREL16_HA: | |
4822 | case R_PPC64_DTPREL16_DS: | |
4823 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4824 | case R_PPC64_DTPREL16_HIGH: |
4825 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4826 | case R_PPC64_DTPREL16_HIGHER: |
4827 | case R_PPC64_DTPREL16_HIGHERA: | |
4828 | case R_PPC64_DTPREL16_HIGHEST: | |
4829 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4830 | break; |
4831 | ||
ad8e1ba5 | 4832 | /* Nor do these. */ |
25f23106 AM |
4833 | case R_PPC64_REL16: |
4834 | case R_PPC64_REL16_LO: | |
4835 | case R_PPC64_REL16_HI: | |
4836 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4837 | case R_PPC64_REL16_HIGH: |
4838 | case R_PPC64_REL16_HIGHA: | |
4839 | case R_PPC64_REL16_HIGHER: | |
4840 | case R_PPC64_REL16_HIGHERA: | |
4841 | case R_PPC64_REL16_HIGHEST: | |
4842 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4843 | case R_PPC64_REL16_HIGHER34: |
4844 | case R_PPC64_REL16_HIGHERA34: | |
4845 | case R_PPC64_REL16_HIGHEST34: | |
4846 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4847 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4848 | break; |
4849 | ||
45965137 AM |
4850 | /* Not supported as a dynamic relocation. */ |
4851 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4852 | if (bfd_link_pic (info)) |
45965137 AM |
4853 | { |
4854 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4855 | ppc_howto_init (); | |
695344c0 | 4856 | /* xgettext:c-format */ |
174d0a74 | 4857 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4858 | "in shared libraries and PIEs\n"), |
45965137 AM |
4859 | abfd, sec, rel->r_offset, |
4860 | ppc64_elf_howto_table[r_type]->name); | |
4861 | bfd_set_error (bfd_error_bad_value); | |
4862 | return FALSE; | |
4863 | } | |
4864 | break; | |
4865 | ||
ad8e1ba5 | 4866 | case R_PPC64_TOC16: |
33c0ec9d AM |
4867 | case R_PPC64_TOC16_DS: |
4868 | htab->do_multi_toc = 1; | |
d77c8a4b | 4869 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4870 | /* Fall through. */ |
ad8e1ba5 AM |
4871 | case R_PPC64_TOC16_LO: |
4872 | case R_PPC64_TOC16_HI: | |
4873 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4874 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4875 | sec->has_toc_reloc = 1; |
ec73ddcd | 4876 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
4877 | { |
4878 | /* We may need a copy reloc. */ | |
4879 | h->non_got_ref = 1; | |
4880 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
4881 | glibc ld.so as of 2019-08 will error out if one of | |
4882 | these relocations is emitted. */ | |
4883 | h->needs_copy = 1; | |
4884 | goto dodyn; | |
4885 | } | |
ad8e1ba5 AM |
4886 | break; |
4887 | ||
006589cf AM |
4888 | /* Marker reloc. */ |
4889 | case R_PPC64_ENTRY: | |
4890 | break; | |
4891 | ||
5bd4f169 AM |
4892 | /* This relocation describes the C++ object vtable hierarchy. |
4893 | Reconstruct it for later use during GC. */ | |
4894 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4895 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4896 | return FALSE; |
5bd4f169 AM |
4897 | break; |
4898 | ||
4899 | /* This relocation describes which C++ vtable entries are actually | |
4900 | used. Record for later use during GC. */ | |
4901 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4902 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4903 | return FALSE; |
5bd4f169 AM |
4904 | break; |
4905 | ||
721956f4 AM |
4906 | case R_PPC64_REL14: |
4907 | case R_PPC64_REL14_BRTAKEN: | |
4908 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4909 | { |
4910 | asection *dest = NULL; | |
4911 | ||
4912 | /* Heuristic: If jumping outside our section, chances are | |
4913 | we are going to need a stub. */ | |
4914 | if (h != NULL) | |
4915 | { | |
4916 | /* If the sym is weak it may be overridden later, so | |
4917 | don't assume we know where a weak sym lives. */ | |
4918 | if (h->root.type == bfd_link_hash_defined) | |
4919 | dest = h->root.u.def.section; | |
4920 | } | |
4921 | else | |
87d72d41 AM |
4922 | { |
4923 | Elf_Internal_Sym *isym; | |
4924 | ||
4925 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4926 | abfd, r_symndx); | |
4927 | if (isym == NULL) | |
4928 | return FALSE; | |
4929 | ||
4930 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4931 | } | |
4932 | ||
220c76dd | 4933 | if (dest != sec) |
7c8fe5c4 | 4934 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4935 | } |
3e04d765 AM |
4936 | goto rel24; |
4937 | ||
4938 | case R_PPC64_PLTCALL: | |
5663e321 | 4939 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4940 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4941 | /* Fall through. */ |
4942 | ||
5d1634d7 | 4943 | case R_PPC64_REL24: |
05d0e962 | 4944 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4945 | rel24: |
cbf95972 AM |
4946 | plt_list = ifunc; |
4947 | if (h != NULL) | |
5d1634d7 | 4948 | { |
e054468f AM |
4949 | h->needs_plt = 1; |
4950 | if (h->root.root.string[0] == '.' | |
4951 | && h->root.root.string[1] != '\0') | |
ed7007c1 | 4952 | ppc_elf_hash_entry (h)->is_func = 1; |
cbf95972 | 4953 | |
3a71aa26 | 4954 | if (h == tga || h == dottga) |
cbf95972 AM |
4955 | { |
4956 | sec->has_tls_reloc = 1; | |
4957 | if (rel != relocs | |
4958 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4959 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4960 | /* We have a new-style __tls_get_addr call with | |
4961 | a marker reloc. */ | |
4962 | ; | |
4963 | else | |
4964 | /* Mark this section as having an old-style call. */ | |
9737e8af | 4965 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
4966 | } |
4967 | plt_list = &h->plt.plist; | |
411e1bfb | 4968 | } |
cbf95972 AM |
4969 | |
4970 | /* We may need a .plt entry if the function this reloc | |
4971 | refers to is in a shared lib. */ | |
4972 | if (plt_list | |
133a1f60 | 4973 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4974 | return FALSE; |
411e1bfb AM |
4975 | break; |
4976 | ||
cbf95972 AM |
4977 | case R_PPC64_ADDR14: |
4978 | case R_PPC64_ADDR14_BRNTAKEN: | |
4979 | case R_PPC64_ADDR14_BRTAKEN: | |
4980 | case R_PPC64_ADDR24: | |
4981 | goto dodyn; | |
4982 | ||
411e1bfb AM |
4983 | case R_PPC64_TPREL64: |
4984 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 4985 | if (bfd_link_dll (info)) |
411e1bfb AM |
4986 | info->flags |= DF_STATIC_TLS; |
4987 | goto dotlstoc; | |
4988 | ||
4989 | case R_PPC64_DTPMOD64: | |
4990 | if (rel + 1 < rel_end | |
4991 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4992 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4993 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4994 | else |
951fd09b | 4995 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4996 | goto dotlstoc; |
4997 | ||
4998 | case R_PPC64_DTPREL64: | |
4999 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5000 | if (rel != relocs | |
5001 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5002 | && rel[-1].r_offset == rel->r_offset - 8) | |
5003 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5004 | Don't mark with TLS_DTPREL. */ | |
5005 | goto dodyn; | |
5006 | ||
5007 | dotlstoc: | |
5008 | sec->has_tls_reloc = 1; | |
5009 | if (h != NULL) | |
ed7007c1 | 5010 | ppc_elf_hash_entry (h)->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
5011 | else |
5012 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5013 | rel->r_addend, tls_type)) |
411e1bfb AM |
5014 | return FALSE; |
5015 | ||
7c8fe5c4 AM |
5016 | ppc64_sec = ppc64_elf_section_data (sec); |
5017 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5018 | { |
3a71aa26 AM |
5019 | bfd_size_type amt; |
5020 | ||
e7b938ca | 5021 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5022 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5023 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5024 | if (ppc64_sec->u.toc.symndx == NULL) | |
5025 | return FALSE; | |
5026 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5027 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5028 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5029 | return FALSE; |
7c8fe5c4 AM |
5030 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5031 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5032 | } |
5033 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 5034 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5035 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5036 | |
5037 | /* Mark the second slot of a GD or LD entry. | |
5038 | -1 to indicate GD and -2 to indicate LD. */ | |
5039 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5040 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5041 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5042 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5043 | goto dodyn; |
5044 | ||
5045 | case R_PPC64_TPREL16: | |
5046 | case R_PPC64_TPREL16_LO: | |
5047 | case R_PPC64_TPREL16_HI: | |
5048 | case R_PPC64_TPREL16_HA: | |
5049 | case R_PPC64_TPREL16_DS: | |
5050 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5051 | case R_PPC64_TPREL16_HIGH: |
5052 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5053 | case R_PPC64_TPREL16_HIGHER: |
5054 | case R_PPC64_TPREL16_HIGHERA: | |
5055 | case R_PPC64_TPREL16_HIGHEST: | |
5056 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 5057 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
5058 | if (bfd_link_dll (info)) |
5059 | info->flags |= DF_STATIC_TLS; | |
5060 | goto dodyn; | |
5d1634d7 | 5061 | |
e86ce104 | 5062 | case R_PPC64_ADDR64: |
b9399fcf | 5063 | if (is_opd |
1e2f5b6e | 5064 | && rel + 1 < rel_end |
4ce794b7 | 5065 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5066 | { |
8387904d | 5067 | if (h != NULL) |
ed7007c1 | 5068 | ppc_elf_hash_entry (h)->is_func = 1; |
1e2f5b6e | 5069 | } |
e86ce104 AM |
5070 | /* Fall through. */ |
5071 | ||
65f38f15 AM |
5072 | case R_PPC64_ADDR16: |
5073 | case R_PPC64_ADDR16_DS: | |
5074 | case R_PPC64_ADDR16_HA: | |
5075 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5076 | case R_PPC64_ADDR16_HIGH: |
5077 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5078 | case R_PPC64_ADDR16_HIGHER: |
5079 | case R_PPC64_ADDR16_HIGHERA: | |
5080 | case R_PPC64_ADDR16_HIGHEST: | |
5081 | case R_PPC64_ADDR16_HIGHESTA: | |
5082 | case R_PPC64_ADDR16_LO: | |
5083 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5084 | case R_PPC64_D34: |
5085 | case R_PPC64_D34_LO: | |
5086 | case R_PPC64_D34_HI30: | |
5087 | case R_PPC64_D34_HA30: | |
5088 | case R_PPC64_ADDR16_HIGHER34: | |
5089 | case R_PPC64_ADDR16_HIGHERA34: | |
5090 | case R_PPC64_ADDR16_HIGHEST34: | |
5091 | case R_PPC64_ADDR16_HIGHESTA34: | |
5092 | case R_PPC64_D28: | |
0e1862bb | 5093 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5094 | && rel->r_addend == 0) |
5095 | { | |
5096 | /* We may need a .plt entry if this reloc refers to a | |
5097 | function in a shared lib. */ | |
5663e321 | 5098 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
5099 | return FALSE; |
5100 | h->pointer_equality_needed = 1; | |
5101 | } | |
5102 | /* Fall through. */ | |
5103 | ||
5104 | case R_PPC64_REL30: | |
5105 | case R_PPC64_REL32: | |
5106 | case R_PPC64_REL64: | |
65f38f15 | 5107 | case R_PPC64_ADDR32: |
65f38f15 AM |
5108 | case R_PPC64_UADDR16: |
5109 | case R_PPC64_UADDR32: | |
5110 | case R_PPC64_UADDR64: | |
5bd4f169 | 5111 | case R_PPC64_TOC: |
ec73ddcd | 5112 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5113 | /* We may need a copy reloc. */ |
f5385ebf | 5114 | h->non_got_ref = 1; |
81848ca0 | 5115 | |
41bd81ab | 5116 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5117 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5118 | break; |
e86ce104 | 5119 | |
65f38f15 AM |
5120 | /* If we are creating a shared library, and this is a reloc |
5121 | against a global symbol, or a non PC relative reloc | |
5122 | against a local symbol, then we need to copy the reloc | |
5123 | into the shared library. However, if we are linking with | |
5124 | -Bsymbolic, we do not need to copy a reloc against a | |
5125 | global symbol which is defined in an object we are | |
5126 | including in the link (i.e., DEF_REGULAR is set). At | |
5127 | this point we have not seen all the input files, so it is | |
5128 | possible that DEF_REGULAR is not set now but will be set | |
5129 | later (it is never cleared). In case of a weak definition, | |
5130 | DEF_REGULAR may be cleared later by a strong definition in | |
5131 | a shared library. We account for that possibility below by | |
f4656909 | 5132 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5133 | table entry. A similar situation occurs when creating |
5134 | shared libraries and symbol visibility changes render the | |
5135 | symbol local. | |
5136 | ||
5137 | If on the other hand, we are creating an executable, we | |
5138 | may need to keep relocations for symbols satisfied by a | |
5139 | dynamic library if we manage to avoid copy relocs for the | |
5140 | symbol. */ | |
411e1bfb | 5141 | dodyn: |
ec73ddcd AM |
5142 | if ((h != NULL |
5143 | && (h->root.type == bfd_link_hash_defweak | |
5144 | || !h->def_regular)) | |
5145 | || (h != NULL | |
5146 | && !bfd_link_executable (info) | |
5147 | && !SYMBOLIC_BIND (info, h)) | |
5148 | || (bfd_link_pic (info) | |
5149 | && must_be_dyn_reloc (info, r_type)) | |
0e1862bb | 5150 | || (!bfd_link_pic (info) |
25f23106 | 5151 | && ifunc != NULL)) |
5bd4f169 | 5152 | { |
65f38f15 AM |
5153 | /* We must copy these reloc types into the output file. |
5154 | Create a reloc section in dynobj and make room for | |
5155 | this reloc. */ | |
5bd4f169 AM |
5156 | if (sreloc == NULL) |
5157 | { | |
83bac4b0 NC |
5158 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5159 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5160 | |
5bd4f169 | 5161 | if (sreloc == NULL) |
83bac4b0 | 5162 | return FALSE; |
5bd4f169 AM |
5163 | } |
5164 | ||
65f38f15 AM |
5165 | /* If this is a global symbol, we count the number of |
5166 | relocations we need for this symbol. */ | |
5167 | if (h != NULL) | |
5168 | { | |
19e08130 AM |
5169 | struct elf_dyn_relocs *p; |
5170 | struct elf_dyn_relocs **head; | |
5171 | ||
190eb1dd | 5172 | head = &h->dyn_relocs; |
19e08130 AM |
5173 | p = *head; |
5174 | if (p == NULL || p->sec != sec) | |
5175 | { | |
5176 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5177 | if (p == NULL) | |
5178 | return FALSE; | |
5179 | p->next = *head; | |
5180 | *head = p; | |
5181 | p->sec = sec; | |
5182 | p->count = 0; | |
5183 | p->pc_count = 0; | |
5184 | } | |
5185 | p->count += 1; | |
5186 | if (!must_be_dyn_reloc (info, r_type)) | |
5187 | p->pc_count += 1; | |
65f38f15 AM |
5188 | } |
5189 | else | |
5190 | { | |
ec338859 AM |
5191 | /* Track dynamic relocs needed for local syms too. |
5192 | We really need local syms available to do this | |
5193 | easily. Oh well. */ | |
19e08130 AM |
5194 | struct ppc_dyn_relocs *p; |
5195 | struct ppc_dyn_relocs **head; | |
5196 | bfd_boolean is_ifunc; | |
ec338859 | 5197 | asection *s; |
6edfbbad | 5198 | void *vpp; |
87d72d41 | 5199 | Elf_Internal_Sym *isym; |
6edfbbad | 5200 | |
87d72d41 AM |
5201 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5202 | abfd, r_symndx); | |
5203 | if (isym == NULL) | |
b34976b6 | 5204 | return FALSE; |
ec338859 | 5205 | |
87d72d41 AM |
5206 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5207 | if (s == NULL) | |
5208 | s = sec; | |
5209 | ||
6edfbbad | 5210 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5211 | head = (struct ppc_dyn_relocs **) vpp; |
5212 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5213 | p = *head; | |
5214 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5215 | p = p->next; | |
5216 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5217 | { | |
5218 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5219 | if (p == NULL) | |
5220 | return FALSE; | |
5221 | p->next = *head; | |
5222 | *head = p; | |
5223 | p->sec = sec; | |
5224 | p->ifunc = is_ifunc; | |
5225 | p->count = 0; | |
5226 | } | |
5227 | p->count += 1; | |
ec338859 | 5228 | } |
65f38f15 | 5229 | } |
5bd4f169 | 5230 | break; |
65f38f15 AM |
5231 | |
5232 | default: | |
96e0dda4 | 5233 | break; |
5bd4f169 AM |
5234 | } |
5235 | } | |
5236 | ||
b34976b6 | 5237 | return TRUE; |
5bd4f169 AM |
5238 | } |
5239 | ||
ee67d69a AM |
5240 | /* Merge backend specific data from an object file to the output |
5241 | object file when linking. */ | |
5242 | ||
5243 | static bfd_boolean | |
50e03d47 | 5244 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5245 | { |
50e03d47 | 5246 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5247 | unsigned long iflags, oflags; |
5248 | ||
5249 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5250 | return TRUE; | |
5251 | ||
5252 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5253 | return TRUE; | |
5254 | ||
50e03d47 | 5255 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5256 | return FALSE; |
5257 | ||
5258 | iflags = elf_elfheader (ibfd)->e_flags; | |
5259 | oflags = elf_elfheader (obfd)->e_flags; | |
5260 | ||
f6c7c3e8 | 5261 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5262 | { |
4eca0228 | 5263 | _bfd_error_handler |
695344c0 | 5264 | /* xgettext:c-format */ |
871b3ab2 | 5265 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5266 | bfd_set_error (bfd_error_bad_value); |
5267 | return FALSE; | |
5268 | } | |
f6c7c3e8 | 5269 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5270 | { |
4eca0228 | 5271 | _bfd_error_handler |
695344c0 | 5272 | /* xgettext:c-format */ |
871b3ab2 | 5273 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5274 | ibfd, iflags, oflags); |
5275 | bfd_set_error (bfd_error_bad_value); | |
5276 | return FALSE; | |
5277 | } | |
5278 | ||
4a91d0ba AM |
5279 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5280 | return FALSE; | |
005d79fd | 5281 | |
ee67d69a | 5282 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5283 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5284 | } |
5285 | ||
5286 | static bfd_boolean | |
5287 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5288 | { | |
5289 | /* Print normal ELF private data. */ | |
5290 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5291 | ||
5292 | if (elf_elfheader (abfd)->e_flags != 0) | |
5293 | { | |
5294 | FILE *file = ptr; | |
5295 | ||
ee67d69a AM |
5296 | fprintf (file, _("private flags = 0x%lx:"), |
5297 | elf_elfheader (abfd)->e_flags); | |
5298 | ||
5299 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5300 | fprintf (file, _(" [abiv%ld]"), | |
5301 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5302 | fputc ('\n', file); | |
5303 | } | |
5304 | ||
5305 | return TRUE; | |
5306 | } | |
5307 | ||
8387904d | 5308 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5309 | of the code entry point, and its section, which must be in the same |
5310 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5311 | |
5312 | static bfd_vma | |
5313 | opd_entry_value (asection *opd_sec, | |
5314 | bfd_vma offset, | |
5315 | asection **code_sec, | |
aef36ac1 AM |
5316 | bfd_vma *code_off, |
5317 | bfd_boolean in_code_sec) | |
8387904d AM |
5318 | { |
5319 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5320 | Elf_Internal_Rela *relocs; |
8387904d | 5321 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5322 | bfd_vma val; |
8387904d | 5323 | |
9f296da3 AM |
5324 | /* No relocs implies we are linking a --just-symbols object, or looking |
5325 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5326 | if (opd_sec->reloc_count == 0) |
5327 | { | |
729eabd5 | 5328 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5329 | |
729eabd5 AM |
5330 | if (contents == NULL) |
5331 | { | |
5332 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5333 | return (bfd_vma) -1; | |
5334 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5335 | } | |
ee1e4ede | 5336 | |
dbb3fbbb | 5337 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5338 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5339 | return (bfd_vma) -1; |
5340 | ||
729eabd5 | 5341 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5342 | if (code_sec != NULL) |
5343 | { | |
5344 | asection *sec, *likely = NULL; | |
ee1e4ede | 5345 | |
aef36ac1 | 5346 | if (in_code_sec) |
4b85d634 | 5347 | { |
aef36ac1 AM |
5348 | sec = *code_sec; |
5349 | if (sec->vma <= val | |
5350 | && val < sec->vma + sec->size) | |
5351 | likely = sec; | |
5352 | else | |
5353 | val = -1; | |
5354 | } | |
5355 | else | |
5356 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5357 | if (sec->vma <= val | |
5358 | && (sec->flags & SEC_LOAD) != 0 | |
5359 | && (sec->flags & SEC_ALLOC) != 0) | |
5360 | likely = sec; | |
5361 | if (likely != NULL) | |
5362 | { | |
5363 | *code_sec = likely; | |
5364 | if (code_off != NULL) | |
5365 | *code_off = val - likely->vma; | |
4b85d634 AM |
5366 | } |
5367 | } | |
aef36ac1 | 5368 | return val; |
4b85d634 AM |
5369 | } |
5370 | ||
0c8d6e5c | 5371 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5372 | |
729eabd5 | 5373 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5374 | if (relocs == NULL) |
5375 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5376 | /* PR 17512: file: df8e1fd6. */ |
5377 | if (relocs == NULL) | |
5378 | return (bfd_vma) -1; | |
645ea6a9 | 5379 | |
8387904d | 5380 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5381 | lo = relocs; |
8387904d | 5382 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5383 | val = (bfd_vma) -1; |
8387904d AM |
5384 | while (lo < hi) |
5385 | { | |
5386 | look = lo + (hi - lo) / 2; | |
5387 | if (look->r_offset < offset) | |
5388 | lo = look + 1; | |
5389 | else if (look->r_offset > offset) | |
5390 | hi = look; | |
5391 | else | |
5392 | { | |
0ffa91dd NC |
5393 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5394 | ||
8387904d AM |
5395 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5396 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5397 | { | |
5398 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5399 | asection *sec = NULL; |
8387904d | 5400 | |
b53dfeb2 AM |
5401 | if (symndx >= symtab_hdr->sh_info |
5402 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5403 | { |
5404 | struct elf_link_hash_entry **sym_hashes; | |
5405 | struct elf_link_hash_entry *rh; | |
5406 | ||
5407 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5408 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5409 | if (rh != NULL) |
5410 | { | |
5411 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5412 | if (rh->root.type != bfd_link_hash_defined |
5413 | && rh->root.type != bfd_link_hash_defweak) | |
5414 | break; | |
5415 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5416 | { |
bb854a36 AM |
5417 | val = rh->root.u.def.value; |
5418 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5419 | } |
5420 | } | |
5421 | } | |
5422 | ||
5423 | if (sec == NULL) | |
5424 | { | |
5425 | Elf_Internal_Sym *sym; | |
5426 | ||
5427 | if (symndx < symtab_hdr->sh_info) | |
5428 | { | |
5429 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5430 | if (sym == NULL) | |
5431 | { | |
5432 | size_t symcnt = symtab_hdr->sh_info; | |
5433 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5434 | symcnt, 0, | |
5435 | NULL, NULL, NULL); | |
5436 | if (sym == NULL) | |
5437 | break; | |
5438 | symtab_hdr->contents = (bfd_byte *) sym; | |
5439 | } | |
5440 | sym += symndx; | |
128205bb AM |
5441 | } |
5442 | else | |
5443 | { | |
b53dfeb2 AM |
5444 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5445 | 1, symndx, | |
5446 | NULL, NULL, NULL); | |
128205bb AM |
5447 | if (sym == NULL) |
5448 | break; | |
128205bb | 5449 | } |
b53dfeb2 AM |
5450 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5451 | if (sec == NULL) | |
5452 | break; | |
5453 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5454 | val = sym->st_value; | |
8387904d | 5455 | } |
b53dfeb2 | 5456 | |
8387904d AM |
5457 | val += look->r_addend; |
5458 | if (code_off != NULL) | |
5459 | *code_off = val; | |
5460 | if (code_sec != NULL) | |
aef36ac1 AM |
5461 | { |
5462 | if (in_code_sec && *code_sec != sec) | |
5463 | return -1; | |
5464 | else | |
5465 | *code_sec = sec; | |
5466 | } | |
b53dfeb2 | 5467 | if (sec->output_section != NULL) |
8387904d | 5468 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5469 | } |
5470 | break; | |
5471 | } | |
5472 | } | |
645ea6a9 | 5473 | |
645ea6a9 | 5474 | return val; |
8387904d AM |
5475 | } |
5476 | ||
aef36ac1 AM |
5477 | /* If the ELF symbol SYM might be a function in SEC, return the |
5478 | function size and set *CODE_OFF to the function's entry point, | |
5479 | otherwise return zero. */ | |
9f296da3 | 5480 | |
aef36ac1 AM |
5481 | static bfd_size_type |
5482 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5483 | bfd_vma *code_off) | |
9f296da3 | 5484 | { |
aef36ac1 AM |
5485 | bfd_size_type size; |
5486 | ||
5487 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5488 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5489 | return 0; | |
5490 | ||
5491 | size = 0; | |
5492 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5493 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5494 | ||
5495 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5496 | { |
b07bca4e AM |
5497 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5498 | bfd_vma symval = sym->value; | |
5499 | ||
5500 | if (opd != NULL | |
5501 | && opd->adjust != NULL | |
5502 | && elf_section_data (sym->section)->relocs != NULL) | |
5503 | { | |
5504 | /* opd_entry_value will use cached relocs that have been | |
5505 | adjusted, but with raw symbols. That means both local | |
5506 | and global symbols need adjusting. */ | |
5507 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5508 | if (adjust == -1) | |
5509 | return 0; | |
5510 | symval += adjust; | |
5511 | } | |
5512 | ||
5513 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5514 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5515 | return 0; | |
5516 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5517 | symbol. This size has nothing to do with the code size of the | |
5518 | function, which is what we're supposed to return, but the | |
5519 | code size isn't available without looking up the dot-sym. | |
5520 | However, doing that would be a waste of time particularly | |
5521 | since elf_find_function will look at the dot-sym anyway. | |
5522 | Now, elf_find_function will keep the largest size of any | |
5523 | function sym found at the code address of interest, so return | |
5524 | 1 here to avoid it incorrectly caching a larger function size | |
5525 | for a small function. This does mean we return the wrong | |
5526 | size for a new-ABI function of size 24, but all that does is | |
5527 | disable caching for such functions. */ | |
5528 | if (size == 24) | |
5529 | size = 1; | |
9f296da3 | 5530 | } |
aef36ac1 AM |
5531 | else |
5532 | { | |
5533 | if (sym->section != sec) | |
5534 | return 0; | |
5535 | *code_off = sym->value; | |
5536 | } | |
5537 | if (size == 0) | |
5538 | size = 1; | |
5539 | return size; | |
9f296da3 AM |
5540 | } |
5541 | ||
f378ab09 AM |
5542 | /* Return true if symbol is a strong function defined in an ELFv2 |
5543 | object with st_other localentry bits of zero, ie. its local entry | |
5544 | point coincides with its global entry point. */ | |
5545 | ||
5546 | static bfd_boolean | |
5547 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5548 | { | |
5549 | return (h != NULL | |
5550 | && h->type == STT_FUNC | |
5551 | && h->root.type == bfd_link_hash_defined | |
5552 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
ed7007c1 | 5553 | && !ppc_elf_hash_entry (h)->non_zero_localentry |
f378ab09 AM |
5554 | && is_ppc64_elf (h->root.u.def.section->owner) |
5555 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5556 | } | |
5557 | ||
854b41e7 AM |
5558 | /* Return true if symbol is defined in a regular object file. */ |
5559 | ||
5560 | static bfd_boolean | |
5561 | is_static_defined (struct elf_link_hash_entry *h) | |
5562 | { | |
5563 | return ((h->root.type == bfd_link_hash_defined | |
5564 | || h->root.type == bfd_link_hash_defweak) | |
5565 | && h->root.u.def.section != NULL | |
5566 | && h->root.u.def.section->output_section != NULL); | |
5567 | } | |
5568 | ||
b31867b6 AM |
5569 | /* If FDH is a function descriptor symbol, return the associated code |
5570 | entry symbol if it is defined. Return NULL otherwise. */ | |
5571 | ||
5572 | static struct ppc_link_hash_entry * | |
5573 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5574 | { | |
5575 | if (fdh->is_func_descriptor) | |
5576 | { | |
5577 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5578 | if (fh->elf.root.type == bfd_link_hash_defined | |
5579 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5580 | return fh; | |
5581 | } | |
5582 | return NULL; | |
5583 | } | |
5584 | ||
5585 | /* If FH is a function code entry symbol, return the associated | |
5586 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5587 | ||
5588 | static struct ppc_link_hash_entry * | |
5589 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5590 | { | |
5591 | if (fh->oh != NULL | |
5592 | && fh->oh->is_func_descriptor) | |
5593 | { | |
5594 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5595 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5596 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5597 | return fdh; | |
5598 | } | |
5599 | return NULL; | |
5600 | } | |
5601 | ||
ed7007c1 AM |
5602 | /* Given H is a symbol that satisfies is_static_defined, return the |
5603 | value in the output file. */ | |
5604 | ||
5605 | static bfd_vma | |
5606 | defined_sym_val (struct elf_link_hash_entry *h) | |
5607 | { | |
5608 | return (h->root.u.def.section->output_section->vma | |
5609 | + h->root.u.def.section->output_offset | |
5610 | + h->root.u.def.value); | |
5611 | } | |
5612 | ||
5613 | /* Return true if H matches __tls_get_addr or one of its variants. */ | |
5614 | ||
5615 | static bfd_boolean | |
5616 | is_tls_get_addr (struct elf_link_hash_entry *h, | |
5617 | struct ppc_link_hash_table *htab) | |
5618 | { | |
9e7028aa AM |
5619 | return (h == &htab->tls_get_addr_fd->elf || h == &htab->tga_desc_fd->elf |
5620 | || h == &htab->tls_get_addr->elf || h == &htab->tga_desc->elf); | |
ed7007c1 AM |
5621 | } |
5622 | ||
8c5b4e52 AM |
5623 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5624 | ||
5625 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5626 | ||
5627 | static bfd_boolean | |
5628 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5629 | { | |
5630 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5631 | ||
5632 | if (htab != NULL && htab->need_func_desc_adj) | |
5633 | { | |
5634 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5635 | htab->need_func_desc_adj = 0; | |
5636 | } | |
5637 | return bfd_elf_gc_sections (abfd, info); | |
5638 | } | |
5639 | ||
74f0fb50 AM |
5640 | /* Mark all our entry sym sections, both opd and code section. */ |
5641 | ||
5642 | static void | |
5643 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5644 | { | |
5645 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5646 | struct bfd_sym_chain *sym; | |
5647 | ||
4dfe6ac6 NC |
5648 | if (htab == NULL) |
5649 | return; | |
5650 | ||
74f0fb50 AM |
5651 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5652 | { | |
b31867b6 | 5653 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5654 | asection *sec; |
5655 | ||
ed7007c1 AM |
5656 | eh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym->name, |
5657 | FALSE, FALSE, TRUE)); | |
74f0fb50 AM |
5658 | if (eh == NULL) |
5659 | continue; | |
5660 | if (eh->elf.root.type != bfd_link_hash_defined | |
5661 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5662 | continue; | |
5663 | ||
b31867b6 AM |
5664 | fh = defined_code_entry (eh); |
5665 | if (fh != NULL) | |
74f0fb50 | 5666 | { |
b31867b6 | 5667 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5668 | sec->flags |= SEC_KEEP; |
5669 | } | |
5670 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5671 | && opd_entry_value (eh->elf.root.u.def.section, | |
5672 | eh->elf.root.u.def.value, | |
aef36ac1 | 5673 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5674 | sec->flags |= SEC_KEEP; |
5675 | ||
5676 | sec = eh->elf.root.u.def.section; | |
5677 | sec->flags |= SEC_KEEP; | |
5678 | } | |
5679 | } | |
5680 | ||
64d03ab5 AM |
5681 | /* Mark sections containing dynamically referenced symbols. When |
5682 | building shared libraries, we must assume that any visible symbol is | |
5683 | referenced. */ | |
5684 | ||
5685 | static bfd_boolean | |
5686 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5687 | { | |
5688 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
ed7007c1 | 5689 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
b31867b6 | 5690 | struct ppc_link_hash_entry *fdh; |
b407645f | 5691 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5692 | |
64d03ab5 | 5693 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5694 | fdh = defined_func_desc (eh); |
5695 | if (fdh != NULL) | |
5696 | eh = fdh; | |
64d03ab5 AM |
5697 | |
5698 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5699 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5700 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5701 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5702 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5703 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5704 | && (!bfd_link_executable (info) |
e278ae05 | 5705 | || info->gc_keep_exported |
b407645f AM |
5706 | || info->export_dynamic |
5707 | || (eh->elf.dynamic | |
5708 | && d != NULL | |
2cdcc330 AM |
5709 | && (*d->match) (&d->head, NULL, |
5710 | eh->elf.root.root.string))) | |
e278ae05 | 5711 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5712 | || !bfd_hide_sym_by_version (info->version_info, |
5713 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5714 | { |
5715 | asection *code_sec; | |
b31867b6 | 5716 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5717 | |
5718 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5719 | ||
5720 | /* Function descriptor syms cause the associated | |
5721 | function code sym section to be marked. */ | |
b31867b6 AM |
5722 | fh = defined_code_entry (eh); |
5723 | if (fh != NULL) | |
5724 | { | |
5725 | code_sec = fh->elf.root.u.def.section; | |
5726 | code_sec->flags |= SEC_KEEP; | |
5727 | } | |
64d03ab5 AM |
5728 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5729 | && opd_entry_value (eh->elf.root.u.def.section, | |
5730 | eh->elf.root.u.def.value, | |
aef36ac1 | 5731 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5732 | code_sec->flags |= SEC_KEEP; |
5733 | } | |
5734 | ||
5735 | return TRUE; | |
5736 | } | |
5737 | ||
5bd4f169 AM |
5738 | /* Return the section that should be marked against GC for a given |
5739 | relocation. */ | |
5740 | ||
5741 | static asection * | |
4ce794b7 | 5742 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5743 | struct bfd_link_info *info, |
4ce794b7 AM |
5744 | Elf_Internal_Rela *rel, |
5745 | struct elf_link_hash_entry *h, | |
5746 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5747 | { |
ccfa59ea AM |
5748 | asection *rsec; |
5749 | ||
ccfa59ea AM |
5750 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5751 | function sections, as all functions are referenced in .opd. */ | |
5752 | rsec = NULL; | |
5753 | if (get_opd_info (sec) != NULL) | |
5754 | return rsec; | |
1e2f5b6e | 5755 | |
5bd4f169 AM |
5756 | if (h != NULL) |
5757 | { | |
04c9666a | 5758 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5759 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5760 | |
4ce794b7 | 5761 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5762 | switch (r_type) |
5bd4f169 AM |
5763 | { |
5764 | case R_PPC64_GNU_VTINHERIT: | |
5765 | case R_PPC64_GNU_VTENTRY: | |
5766 | break; | |
5767 | ||
5768 | default: | |
5769 | switch (h->root.type) | |
5770 | { | |
5771 | case bfd_link_hash_defined: | |
5772 | case bfd_link_hash_defweak: | |
ed7007c1 | 5773 | eh = ppc_elf_hash_entry (h); |
b31867b6 AM |
5774 | fdh = defined_func_desc (eh); |
5775 | if (fdh != NULL) | |
8c5b4e52 AM |
5776 | { |
5777 | /* -mcall-aixdesc code references the dot-symbol on | |
5778 | a call reloc. Mark the function descriptor too | |
5779 | against garbage collection. */ | |
5780 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5781 | if (fdh->elf.is_weakalias) |
5782 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5783 | eh = fdh; |
5784 | } | |
1e2f5b6e AM |
5785 | |
5786 | /* Function descriptor syms cause the associated | |
5787 | function code sym section to be marked. */ | |
b31867b6 AM |
5788 | fh = defined_code_entry (eh); |
5789 | if (fh != NULL) | |
ccfa59ea AM |
5790 | { |
5791 | /* They also mark their opd section. */ | |
74f0fb50 | 5792 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5793 | |
b31867b6 | 5794 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5795 | } |
8387904d AM |
5796 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5797 | && opd_entry_value (eh->elf.root.u.def.section, | |
5798 | eh->elf.root.u.def.value, | |
aef36ac1 | 5799 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5800 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5801 | else |
1e2f5b6e AM |
5802 | rsec = h->root.u.def.section; |
5803 | break; | |
5bd4f169 AM |
5804 | |
5805 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5806 | rsec = h->root.u.c.p->section; |
5807 | break; | |
5bd4f169 AM |
5808 | |
5809 | default: | |
fb34365b | 5810 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5811 | } |
5812 | } | |
5813 | } | |
5814 | else | |
5815 | { | |
74f0fb50 | 5816 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5817 | |
5818 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5819 | opd = get_opd_info (rsec); |
5820 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5821 | { |
74f0fb50 | 5822 | rsec->gc_mark = 1; |
ccfa59ea | 5823 | |
51aecdc5 | 5824 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5825 | } |
5bd4f169 AM |
5826 | } |
5827 | ||
1e2f5b6e | 5828 | return rsec; |
5bd4f169 AM |
5829 | } |
5830 | ||
deb0e272 AM |
5831 | /* The maximum size of .sfpr. */ |
5832 | #define SFPR_MAX (218*4) | |
5833 | ||
5834 | struct sfpr_def_parms | |
5835 | { | |
699733f6 AM |
5836 | const char name[12]; |
5837 | unsigned char lo, hi; | |
2cdcc330 AM |
5838 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5839 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5840 | }; |
5841 | ||
a4b6fadd AM |
5842 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5843 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5844 | instead. */ | |
deb0e272 | 5845 | |
4dfe6ac6 | 5846 | static bfd_boolean |
a4b6fadd AM |
5847 | sfpr_define (struct bfd_link_info *info, |
5848 | const struct sfpr_def_parms *parm, | |
5849 | asection *stub_sec) | |
deb0e272 AM |
5850 | { |
5851 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5852 | unsigned int i; | |
5853 | size_t len = strlen (parm->name); | |
5854 | bfd_boolean writing = FALSE; | |
699733f6 | 5855 | char sym[16]; |
deb0e272 | 5856 | |
4dfe6ac6 NC |
5857 | if (htab == NULL) |
5858 | return FALSE; | |
5859 | ||
deb0e272 AM |
5860 | memcpy (sym, parm->name, len); |
5861 | sym[len + 2] = 0; | |
5862 | ||
5863 | for (i = parm->lo; i <= parm->hi; i++) | |
5864 | { | |
a4b6fadd | 5865 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5866 | |
5867 | sym[len + 0] = i / 10 + '0'; | |
5868 | sym[len + 1] = i % 10 + '0'; | |
ed7007c1 AM |
5869 | h = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym, |
5870 | writing, TRUE, TRUE)); | |
a4b6fadd | 5871 | if (stub_sec != NULL) |
deb0e272 | 5872 | { |
a4b6fadd AM |
5873 | if (h != NULL |
5874 | && h->elf.root.type == bfd_link_hash_defined | |
5875 | && h->elf.root.u.def.section == htab->sfpr) | |
5876 | { | |
5877 | struct elf_link_hash_entry *s; | |
5878 | char buf[32]; | |
5879 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5880 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5881 | if (s == NULL) | |
5882 | return FALSE; | |
779f2ae7 | 5883 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
5884 | { |
5885 | s->root.type = bfd_link_hash_defined; | |
5886 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5887 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5888 | + h->elf.root.u.def.value); |
5889 | s->ref_regular = 1; | |
5890 | s->def_regular = 1; | |
5891 | s->ref_regular_nonweak = 1; | |
5892 | s->forced_local = 1; | |
5893 | s->non_elf = 0; | |
5894 | s->root.linker_def = 1; | |
5895 | } | |
5896 | } | |
5897 | continue; | |
5898 | } | |
5899 | if (h != NULL) | |
5900 | { | |
5901 | h->save_res = 1; | |
5902 | if (!h->elf.def_regular) | |
deb0e272 | 5903 | { |
a4b6fadd AM |
5904 | h->elf.root.type = bfd_link_hash_defined; |
5905 | h->elf.root.u.def.section = htab->sfpr; | |
5906 | h->elf.root.u.def.value = htab->sfpr->size; | |
5907 | h->elf.type = STT_FUNC; | |
5908 | h->elf.def_regular = 1; | |
b32547cd | 5909 | h->elf.non_elf = 0; |
a4b6fadd AM |
5910 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5911 | writing = TRUE; | |
deb0e272 | 5912 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5913 | { |
2cdcc330 AM |
5914 | htab->sfpr->contents |
5915 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5916 | if (htab->sfpr->contents == NULL) |
5917 | return FALSE; | |
5918 | } | |
deb0e272 AM |
5919 | } |
5920 | } | |
5921 | if (writing) | |
5922 | { | |
5923 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5924 | if (i != parm->hi) | |
5925 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5926 | else | |
5927 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5928 | htab->sfpr->size = p - htab->sfpr->contents; | |
5929 | } | |
5930 | } | |
5931 | ||
5932 | return TRUE; | |
5933 | } | |
5934 | ||
5935 | static bfd_byte * | |
5936 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5937 | { | |
5938 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5939 | return p + 4; | |
5940 | } | |
5941 | ||
5942 | static bfd_byte * | |
5943 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5944 | { | |
5945 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5946 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5947 | p = p + 4; |
5948 | bfd_put_32 (abfd, BLR, p); | |
5949 | return p + 4; | |
5950 | } | |
5951 | ||
5952 | static bfd_byte * | |
5953 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5954 | { | |
5955 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5956 | return p + 4; | |
5957 | } | |
5958 | ||
5959 | static bfd_byte * | |
5960 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5961 | { | |
a078d95a | 5962 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5963 | p = p + 4; |
5964 | p = restgpr0 (abfd, p, r); | |
5965 | bfd_put_32 (abfd, MTLR_R0, p); | |
5966 | p = p + 4; | |
5967 | if (r == 29) | |
5968 | { | |
5969 | p = restgpr0 (abfd, p, 30); | |
5970 | p = restgpr0 (abfd, p, 31); | |
5971 | } | |
5972 | bfd_put_32 (abfd, BLR, p); | |
5973 | return p + 4; | |
5974 | } | |
5975 | ||
5976 | static bfd_byte * | |
5977 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5978 | { | |
5979 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5980 | return p + 4; | |
5981 | } | |
5982 | ||
5983 | static bfd_byte * | |
5984 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5985 | { | |
5986 | p = savegpr1 (abfd, p, r); | |
5987 | bfd_put_32 (abfd, BLR, p); | |
5988 | return p + 4; | |
5989 | } | |
5990 | ||
5991 | static bfd_byte * | |
5992 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5993 | { | |
5994 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5995 | return p + 4; | |
5996 | } | |
5997 | ||
5998 | static bfd_byte * | |
5999 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6000 | { | |
6001 | p = restgpr1 (abfd, p, r); | |
6002 | bfd_put_32 (abfd, BLR, p); | |
6003 | return p + 4; | |
6004 | } | |
6005 | ||
6006 | static bfd_byte * | |
6007 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6008 | { | |
6009 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6010 | return p + 4; | |
6011 | } | |
6012 | ||
6013 | static bfd_byte * | |
6014 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6015 | { | |
6016 | p = savefpr (abfd, p, r); | |
a078d95a | 6017 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6018 | p = p + 4; |
6019 | bfd_put_32 (abfd, BLR, p); | |
6020 | return p + 4; | |
6021 | } | |
6022 | ||
6023 | static bfd_byte * | |
6024 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6025 | { | |
6026 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6027 | return p + 4; | |
6028 | } | |
6029 | ||
6030 | static bfd_byte * | |
6031 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6032 | { | |
a078d95a | 6033 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6034 | p = p + 4; |
6035 | p = restfpr (abfd, p, r); | |
6036 | bfd_put_32 (abfd, MTLR_R0, p); | |
6037 | p = p + 4; | |
6038 | if (r == 29) | |
6039 | { | |
6040 | p = restfpr (abfd, p, 30); | |
6041 | p = restfpr (abfd, p, 31); | |
6042 | } | |
6043 | bfd_put_32 (abfd, BLR, p); | |
6044 | return p + 4; | |
6045 | } | |
6046 | ||
6047 | static bfd_byte * | |
6048 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6049 | { | |
6050 | p = savefpr (abfd, p, r); | |
6051 | bfd_put_32 (abfd, BLR, p); | |
6052 | return p + 4; | |
6053 | } | |
6054 | ||
6055 | static bfd_byte * | |
6056 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6057 | { | |
6058 | p = restfpr (abfd, p, r); | |
6059 | bfd_put_32 (abfd, BLR, p); | |
6060 | return p + 4; | |
6061 | } | |
6062 | ||
6063 | static bfd_byte * | |
6064 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6065 | { | |
6066 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6067 | p = p + 4; | |
6068 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6069 | return p + 4; | |
6070 | } | |
6071 | ||
6072 | static bfd_byte * | |
6073 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6074 | { | |
6075 | p = savevr (abfd, p, r); | |
6076 | bfd_put_32 (abfd, BLR, p); | |
6077 | return p + 4; | |
6078 | } | |
6079 | ||
6080 | static bfd_byte * | |
6081 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6082 | { | |
6083 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6084 | p = p + 4; | |
6085 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6086 | return p + 4; | |
6087 | } | |
6088 | ||
6089 | static bfd_byte * | |
6090 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6091 | { | |
6092 | p = restvr (abfd, p, r); | |
6093 | bfd_put_32 (abfd, BLR, p); | |
6094 | return p + 4; | |
6095 | } | |
6096 | ||
9e7028aa AM |
6097 | #define STDU_R1_0R1 0xf8210001 |
6098 | #define ADDI_R1_R1 0x38210000 | |
6099 | ||
6100 | /* Emit prologue of wrapper preserving regs around a call to | |
6101 | __tls_get_addr_opt. */ | |
6102 | ||
6103 | static bfd_byte * | |
6104 | tls_get_addr_prologue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6105 | { | |
6106 | unsigned int i; | |
6107 | ||
6108 | bfd_put_32 (obfd, MFLR_R0, p); | |
6109 | p += 4; | |
6110 | bfd_put_32 (obfd, STD_R0_0R1 + 16, p); | |
6111 | p += 4; | |
6112 | ||
6113 | if (htab->opd_abi) | |
6114 | { | |
6115 | for (i = 4; i < 12; i++) | |
6116 | { | |
6117 | bfd_put_32 (obfd, | |
6118 | STD_R0_0R1 | i << 21 | (-(13 - i) * 8 & 0xffff), p); | |
6119 | p += 4; | |
6120 | } | |
6121 | bfd_put_32 (obfd, STDU_R1_0R1 | (-128 & 0xffff), p); | |
6122 | p += 4; | |
6123 | } | |
6124 | else | |
6125 | { | |
6126 | for (i = 4; i < 12; i++) | |
6127 | { | |
6128 | bfd_put_32 (obfd, | |
6129 | STD_R0_0R1 | i << 21 | (-(12 - i) * 8 & 0xffff), p); | |
6130 | p += 4; | |
6131 | } | |
6132 | bfd_put_32 (obfd, STDU_R1_0R1 | (-96 & 0xffff), p); | |
6133 | p += 4; | |
6134 | } | |
6135 | return p; | |
6136 | } | |
6137 | ||
6138 | /* Emit epilogue of wrapper preserving regs around a call to | |
6139 | __tls_get_addr_opt. */ | |
6140 | ||
6141 | static bfd_byte * | |
6142 | tls_get_addr_epilogue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6143 | { | |
6144 | unsigned int i; | |
6145 | ||
6146 | if (htab->opd_abi) | |
6147 | { | |
6148 | for (i = 4; i < 12; i++) | |
6149 | { | |
6150 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (128 - (13 - i) * 8), p); | |
6151 | p += 4; | |
6152 | } | |
6153 | bfd_put_32 (obfd, ADDI_R1_R1 | 128, p); | |
6154 | p += 4; | |
6155 | } | |
6156 | else | |
6157 | { | |
6158 | for (i = 4; i < 12; i++) | |
6159 | { | |
6160 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (96 - (12 - i) * 8), p); | |
6161 | p += 4; | |
6162 | } | |
6163 | bfd_put_32 (obfd, ADDI_R1_R1 | 96, p); | |
6164 | p += 4; | |
6165 | } | |
6166 | bfd_put_32 (obfd, LD_R0_0R1 | 16, p); | |
6167 | p += 4; | |
6168 | bfd_put_32 (obfd, MTLR_R0, p); | |
6169 | p += 4; | |
6170 | bfd_put_32 (obfd, BLR, p); | |
6171 | p += 4; | |
6172 | return p; | |
6173 | } | |
6174 | ||
e86ce104 AM |
6175 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6176 | information on function code symbol entries to their corresponding | |
6177 | function descriptor symbol entries. */ | |
deb0e272 | 6178 | |
b34976b6 | 6179 | static bfd_boolean |
4ce794b7 | 6180 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6181 | { |
e86ce104 | 6182 | struct bfd_link_info *info; |
65f38f15 | 6183 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6184 | struct ppc_link_hash_entry *fh; |
6185 | struct ppc_link_hash_entry *fdh; | |
6186 | bfd_boolean force_local; | |
5bd4f169 | 6187 | |
ed7007c1 | 6188 | fh = ppc_elf_hash_entry (h); |
50bc7936 | 6189 | if (fh->elf.root.type == bfd_link_hash_indirect) |
b34976b6 | 6190 | return TRUE; |
e86ce104 | 6191 | |
8c5b4e52 AM |
6192 | if (!fh->is_func) |
6193 | return TRUE; | |
6194 | ||
6195 | if (fh->elf.root.root.string[0] != '.' | |
6196 | || fh->elf.root.root.string[1] == '\0') | |
6197 | return TRUE; | |
6198 | ||
4ce794b7 | 6199 | info = inf; |
65f38f15 | 6200 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6201 | if (htab == NULL) |
6202 | return FALSE; | |
5bd4f169 | 6203 | |
8c5b4e52 AM |
6204 | /* Find the corresponding function descriptor symbol. */ |
6205 | fdh = lookup_fdh (fh, htab); | |
6206 | ||
c09bdfe5 AM |
6207 | /* Resolve undefined references to dot-symbols as the value |
6208 | in the function descriptor, if we have one in a regular object. | |
6209 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6210 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6211 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6212 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6213 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6214 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6215 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6216 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6217 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6218 | &fh->elf.root.u.def.section, |
aef36ac1 | 6219 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6220 | { |
b31867b6 | 6221 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6222 | fh->elf.forced_local = 1; |
b31867b6 AM |
6223 | fh->elf.def_regular = fdh->elf.def_regular; |
6224 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6225 | } |
6226 | ||
8c5b4e52 AM |
6227 | if (!fh->elf.dynamic) |
6228 | { | |
6229 | struct plt_entry *ent; | |
5bd4f169 | 6230 | |
8c5b4e52 AM |
6231 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6232 | if (ent->plt.refcount > 0) | |
6233 | break; | |
6234 | if (ent == NULL) | |
6235 | return TRUE; | |
6236 | } | |
5bd4f169 | 6237 | |
8c5b4e52 | 6238 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6239 | if (fdh == NULL |
0e1862bb | 6240 | && !bfd_link_executable (info) |
50bc7936 AM |
6241 | && (fh->elf.root.type == bfd_link_hash_undefined |
6242 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6243 | { | |
908b32fc | 6244 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6245 | if (fdh == NULL) |
6246 | return FALSE; | |
50bc7936 | 6247 | } |
648cca2c | 6248 | |
8c5b4e52 | 6249 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6250 | if (fdh != NULL |
6251 | && fdh->fake | |
8c5b4e52 AM |
6252 | && (fh->elf.root.type == bfd_link_hash_defined |
6253 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6254 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6255 | |
8c5b4e52 AM |
6256 | /* Transfer dynamic linking information to the function descriptor. */ |
6257 | if (fdh != NULL) | |
6258 | { | |
f5385ebf AM |
6259 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6260 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6261 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6262 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6263 | fdh->elf.dynamic |= fh->elf.dynamic; |
6264 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6265 | || fh->elf.type == STT_FUNC | |
6266 | || fh->elf.type == STT_GNU_IFUNC); | |
6267 | move_plt_plist (fh, fdh); | |
6268 | ||
6269 | if (!fdh->elf.forced_local | |
6270 | && fh->elf.dynindx != -1) | |
6271 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6272 | return FALSE; | |
e86ce104 AM |
6273 | } |
6274 | ||
50bc7936 AM |
6275 | /* Now that the info is on the function descriptor, clear the |
6276 | function code sym info. Any function code syms for which we | |
6277 | don't have a definition in a regular file, we force local. | |
6278 | This prevents a shared library from exporting syms that have | |
6279 | been imported from another library. Function code syms that | |
6280 | are really in the library we must leave global to prevent the | |
6281 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6282 | force_local = (!fh->elf.def_regular |
6283 | || fdh == NULL | |
6284 | || !fdh->elf.def_regular | |
6285 | || fdh->elf.forced_local); | |
50bc7936 AM |
6286 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6287 | ||
b34976b6 | 6288 | return TRUE; |
e86ce104 | 6289 | } |
40b8271b | 6290 | |
a4b6fadd AM |
6291 | static const struct sfpr_def_parms save_res_funcs[] = |
6292 | { | |
6293 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6294 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6295 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6296 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6297 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6298 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6299 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6300 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6301 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6302 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6303 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6304 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6305 | }; | |
6306 | ||
e86ce104 | 6307 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6308 | this hook to a) provide some gcc support functions, and b) transfer |
6309 | dynamic linking information gathered so far on function code symbol | |
6310 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6311 | |
b34976b6 | 6312 | static bfd_boolean |
4ce794b7 AM |
6313 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6314 | struct bfd_link_info *info) | |
e86ce104 AM |
6315 | { |
6316 | struct ppc_link_hash_table *htab; | |
6317 | ||
6318 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6319 | if (htab == NULL) |
6320 | return FALSE; | |
6321 | ||
b32547cd AM |
6322 | /* Provide any missing _save* and _rest* functions. */ |
6323 | if (htab->sfpr != NULL) | |
6324 | { | |
6325 | unsigned int i; | |
6326 | ||
6327 | htab->sfpr->size = 0; | |
6328 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6329 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6330 | return FALSE; | |
6331 | if (htab->sfpr->size == 0) | |
6332 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6333 | } | |
6334 | ||
6335 | if (bfd_link_relocatable (info)) | |
6336 | return TRUE; | |
6337 | ||
6338 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6339 | { |
6340 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6341 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6342 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6343 | if (!htab->elf.hgot->def_regular |
6344 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6345 | { | |
6346 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6347 | htab->elf.hgot->root.u.def.value = 0; | |
6348 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6349 | htab->elf.hgot->def_regular = 1; | |
6350 | htab->elf.hgot->root.linker_def = 1; | |
6351 | } | |
dba6fa9b | 6352 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6353 | htab->elf.hgot->other |
6354 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6355 | } |
c66bb0ee | 6356 | |
8c5b4e52 AM |
6357 | if (htab->need_func_desc_adj) |
6358 | { | |
6359 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6360 | htab->need_func_desc_adj = 0; | |
6361 | } | |
805fc799 | 6362 | |
b34976b6 | 6363 | return TRUE; |
e86ce104 AM |
6364 | } |
6365 | ||
d311bc8b | 6366 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6367 | aliases, that apply to read-only sections. Cannot be used after |
6368 | size_dynamic_sections. */ | |
d311bc8b AM |
6369 | |
6370 | static bfd_boolean | |
6371 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6372 | { | |
ed7007c1 | 6373 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
d311bc8b AM |
6374 | do |
6375 | { | |
5dbc8b37 | 6376 | if (_bfd_elf_readonly_dynrelocs (&eh->elf)) |
d311bc8b | 6377 | return TRUE; |
ed7007c1 | 6378 | eh = ppc_elf_hash_entry (eh->elf.u.alias); |
2cdcc330 AM |
6379 | } |
6380 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6381 | |
6382 | return FALSE; | |
6383 | } | |
8a2058b5 | 6384 | |
8a9e8e72 AM |
6385 | /* Return whether EH has pc-relative dynamic relocs. */ |
6386 | ||
6387 | static bfd_boolean | |
6388 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6389 | { | |
6390 | struct elf_dyn_relocs *p; | |
6391 | ||
190eb1dd | 6392 | for (p = eh->elf.dyn_relocs; p != NULL; p = p->next) |
8a9e8e72 AM |
6393 | if (p->pc_count != 0) |
6394 | return TRUE; | |
6395 | return FALSE; | |
6396 | } | |
6397 | ||
8a2058b5 AM |
6398 | /* Return true if a global entry stub will be created for H. Valid |
6399 | for ELFv2 before plt entries have been allocated. */ | |
6400 | ||
6401 | static bfd_boolean | |
6402 | global_entry_stub (struct elf_link_hash_entry *h) | |
6403 | { | |
6404 | struct plt_entry *pent; | |
6405 | ||
6406 | if (!h->pointer_equality_needed | |
6407 | || h->def_regular) | |
6408 | return FALSE; | |
6409 | ||
6410 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6411 | if (pent->plt.refcount > 0 | |
6412 | && pent->addend == 0) | |
6413 | return TRUE; | |
6414 | ||
6415 | return FALSE; | |
6416 | } | |
6417 | ||
e86ce104 AM |
6418 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6419 | regular object. The current definition is in some section of the | |
6420 | dynamic object, but we're not including those sections. We have to | |
6421 | change the definition to something the rest of the link can | |
6422 | understand. */ | |
6423 | ||
b34976b6 | 6424 | static bfd_boolean |
4ce794b7 AM |
6425 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6426 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6427 | { |
6428 | struct ppc_link_hash_table *htab; | |
5474d94f | 6429 | asection *s, *srel; |
e86ce104 AM |
6430 | |
6431 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6432 | if (htab == NULL) |
6433 | return FALSE; | |
e86ce104 AM |
6434 | |
6435 | /* Deal with function syms. */ | |
6436 | if (h->type == STT_FUNC | |
e054468f | 6437 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6438 | || h->needs_plt) |
e86ce104 | 6439 | { |
ed7007c1 | 6440 | bfd_boolean local = (ppc_elf_hash_entry (h)->save_res |
529fe20e AM |
6441 | || SYMBOL_CALLS_LOCAL (info, h) |
6442 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6443 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6444 | function symbol is local and not an ifunc. We keep dynamic | |
6445 | relocs for ifuncs when local rather than always emitting a | |
6446 | plt call stub for them and defining the symbol on the call | |
6447 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6448 | is defined on a descriptor, not code) and it can be faster at | |
6449 | run-time due to not needing to bounce through a stub. The | |
6450 | dyn_relocs for ifuncs will be applied even in a static | |
6451 | executable. */ | |
6452 | if (!bfd_link_pic (info) | |
6453 | && h->type != STT_GNU_IFUNC | |
6454 | && local) | |
190eb1dd | 6455 | h->dyn_relocs = NULL; |
529fe20e | 6456 | |
e86ce104 AM |
6457 | /* Clear procedure linkage table information for any symbol that |
6458 | won't need a .plt entry. */ | |
411e1bfb AM |
6459 | struct plt_entry *ent; |
6460 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6461 | if (ent->plt.refcount > 0) | |
6462 | break; | |
8387904d | 6463 | if (ent == NULL |
2d7ad24e AM |
6464 | || (h->type != STT_GNU_IFUNC |
6465 | && local | |
3e04d765 | 6466 | && (htab->can_convert_all_inline_plt |
ed7007c1 | 6467 | || (ppc_elf_hash_entry (h)->tls_mask |
3e04d765 | 6468 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) |
40b8271b | 6469 | { |
411e1bfb | 6470 | h->plt.plist = NULL; |
f5385ebf | 6471 | h->needs_plt = 0; |
d1eca1e4 | 6472 | h->pointer_equality_needed = 0; |
40b8271b | 6473 | } |
8a2058b5 | 6474 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6475 | { |
d1eca1e4 AM |
6476 | /* Taking a function's address in a read/write section |
6477 | doesn't require us to define the function symbol in the | |
6478 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6479 | be used instead. The reason we prefer a few more dynamic |
6480 | relocs is that calling via a global entry stub costs a | |
6481 | few more instructions, and pointer_equality_needed causes | |
6482 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6483 | if (global_entry_stub (h)) |
d1eca1e4 | 6484 | { |
5dbc8b37 | 6485 | if (!_bfd_elf_readonly_dynrelocs (h)) |
529fe20e AM |
6486 | { |
6487 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6488 | /* If we haven't seen a branch reloc and the symbol |
6489 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6490 | if (!h->needs_plt) |
6491 | h->plt.plist = NULL; | |
6492 | } | |
6493 | else if (!bfd_link_pic (info)) | |
6494 | /* We are going to be defining the function symbol on the | |
6495 | plt stub, so no dyn_relocs needed when non-pic. */ | |
190eb1dd | 6496 | h->dyn_relocs = NULL; |
d1eca1e4 AM |
6497 | } |
6498 | ||
3988aed5 AM |
6499 | /* ELFv2 function symbols can't have copy relocs. */ |
6500 | return TRUE; | |
6501 | } | |
6502 | else if (!h->needs_plt | |
5dbc8b37 | 6503 | && !_bfd_elf_readonly_dynrelocs (h)) |
3988aed5 | 6504 | { |
04383fd1 AM |
6505 | /* If we haven't seen a branch reloc and the symbol isn't an |
6506 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6507 | h->plt.plist = NULL; |
6508 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6509 | return TRUE; |
6510 | } | |
5bd4f169 | 6511 | } |
bbd7ec4a | 6512 | else |
411e1bfb | 6513 | h->plt.plist = NULL; |
5bd4f169 AM |
6514 | |
6515 | /* If this is a weak symbol, and there is a real definition, the | |
6516 | processor independent code will have arranged for us to see the | |
6517 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6518 | if (h->is_weakalias) |
5bd4f169 | 6519 | { |
60d67dc8 AM |
6520 | struct elf_link_hash_entry *def = weakdef (h); |
6521 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6522 | h->root.u.def.section = def->root.u.def.section; | |
6523 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6524 | if (def->root.u.def.section == htab->elf.sdynbss |
6525 | || def->root.u.def.section == htab->elf.sdynrelro) | |
190eb1dd | 6526 | h->dyn_relocs = NULL; |
b34976b6 | 6527 | return TRUE; |
5bd4f169 AM |
6528 | } |
6529 | ||
5bd4f169 AM |
6530 | /* If we are creating a shared library, we must presume that the |
6531 | only references to the symbol are via the global offset table. | |
6532 | For such cases we need not do anything here; the relocations will | |
6533 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6534 | if (!bfd_link_executable (info)) |
b34976b6 | 6535 | return TRUE; |
5bd4f169 | 6536 | |
65f38f15 AM |
6537 | /* If there are no references to this symbol that do not use the |
6538 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6539 | if (!h->non_got_ref) |
b34976b6 | 6540 | return TRUE; |
65f38f15 | 6541 | |
b186458a | 6542 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6543 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6544 | |
d93d1c80 AM |
6545 | /* If -z nocopyreloc was given, don't generate them either. */ |
6546 | || info->nocopyreloc | |
a127494f | 6547 | |
dce2246a | 6548 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6549 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6550 | || (ELIMINATE_COPY_RELOCS |
6551 | && !h->needs_copy | |
6552 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6553 | |
d93d1c80 AM |
6554 | /* Protected variables do not work with .dynbss. The copy in |
6555 | .dynbss won't be used by the shared library with the protected | |
6556 | definition for the variable. Text relocations are preferable | |
6557 | to an incorrect program. */ | |
6558 | || h->protected_def) | |
529fe20e | 6559 | return TRUE; |
a127494f | 6560 | |
e1c6cf61 AM |
6561 | if (h->type == STT_FUNC |
6562 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6563 | { |
e1c6cf61 AM |
6564 | /* .dynbss copies of function symbols only work if we have |
6565 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6566 | use dot-symbols and set the function symbol size to the text | |
6567 | size of the function rather than the size of the descriptor. | |
6568 | That's wrong for copying a descriptor. */ | |
ed7007c1 | 6569 | if (ppc_elf_hash_entry (h)->oh == NULL |
e1c6cf61 AM |
6570 | || !(h->size == 24 || h->size == 16)) |
6571 | return TRUE; | |
6572 | ||
6573 | /* We should never get here, but unfortunately there are old | |
6574 | versions of gcc (circa gcc-3.2) that improperly for the | |
6575 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6576 | suchlike in read-only sections. Allow them to proceed, but | |
6577 | warn that this might break at runtime. */ | |
25f53a85 | 6578 | info->callbacks->einfo |
c1c8c1ef | 6579 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6580 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6581 | h->root.root.string); |
6582 | } | |
5d35169e AM |
6583 | |
6584 | /* This is a reference to a symbol defined by a dynamic object which | |
6585 | is not a function. */ | |
6586 | ||
5bd4f169 AM |
6587 | /* We must allocate the symbol in our .dynbss section, which will |
6588 | become part of the .bss section of the executable. There will be | |
6589 | an entry for this symbol in the .dynsym section. The dynamic | |
6590 | object will contain position independent code, so all references | |
6591 | from the dynamic object to this symbol will go through the global | |
6592 | offset table. The dynamic linker will use the .dynsym entry to | |
6593 | determine the address it must put in the global offset table, so | |
6594 | both the dynamic object and the regular object will refer to the | |
6595 | same memory location for the variable. */ | |
5474d94f AM |
6596 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6597 | { | |
6598 | s = htab->elf.sdynrelro; | |
6599 | srel = htab->elf.sreldynrelro; | |
6600 | } | |
6601 | else | |
6602 | { | |
6603 | s = htab->elf.sdynbss; | |
6604 | srel = htab->elf.srelbss; | |
6605 | } | |
1d7e9d18 | 6606 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6607 | { |
4a7e5234 AM |
6608 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6609 | linker to copy the initial value out of the dynamic object | |
6610 | and into the runtime process image. */ | |
5474d94f | 6611 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6612 | h->needs_copy = 1; |
5bd4f169 AM |
6613 | } |
6614 | ||
529fe20e | 6615 | /* We no longer want dyn_relocs. */ |
190eb1dd | 6616 | h->dyn_relocs = NULL; |
6cabe1ea | 6617 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6618 | } |
6619 | ||
e86ce104 AM |
6620 | /* If given a function descriptor symbol, hide both the function code |
6621 | sym and the descriptor. */ | |
6622 | static void | |
4ce794b7 AM |
6623 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6624 | struct elf_link_hash_entry *h, | |
6625 | bfd_boolean force_local) | |
e86ce104 | 6626 | { |
34814b9f | 6627 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6628 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6629 | ||
87469ba2 AM |
6630 | if (ppc_hash_table (info) == NULL) |
6631 | return; | |
6632 | ||
ed7007c1 | 6633 | eh = ppc_elf_hash_entry (h); |
34814b9f | 6634 | if (eh->is_func_descriptor) |
e86ce104 | 6635 | { |
34814b9f | 6636 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6637 | |
721956f4 | 6638 | if (fh == NULL) |
d1329ca3 AM |
6639 | { |
6640 | const char *p, *q; | |
b8ac2841 | 6641 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6642 | char save; |
6643 | ||
6644 | /* We aren't supposed to use alloca in BFD because on | |
6645 | systems which do not have alloca the version in libiberty | |
6646 | calls xmalloc, which might cause the program to crash | |
6647 | when it runs out of memory. This function doesn't have a | |
6648 | return status, so there's no way to gracefully return an | |
6649 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6650 | accessed; It's either a string in an ELF string table, |
6651 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6652 | |
34814b9f | 6653 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6654 | save = *p; |
6655 | *(char *) p = '.'; | |
ed7007c1 AM |
6656 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6657 | FALSE, FALSE)); | |
d1329ca3 AM |
6658 | *(char *) p = save; |
6659 | ||
6660 | /* Unfortunately, if it so happens that the string we were | |
6661 | looking for was allocated immediately before this string, | |
6662 | then we overwrote the string terminator. That's the only | |
6663 | reason the lookup should fail. */ | |
6664 | if (fh == NULL) | |
6665 | { | |
34814b9f AM |
6666 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6667 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6668 | --q, --p; |
34814b9f | 6669 | if (q < eh->elf.root.root.string && *p == '.') |
ed7007c1 AM |
6670 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6671 | FALSE, FALSE)); | |
d1329ca3 AM |
6672 | } |
6673 | if (fh != NULL) | |
6674 | { | |
34814b9f AM |
6675 | eh->oh = fh; |
6676 | fh->oh = eh; | |
d1329ca3 AM |
6677 | } |
6678 | } | |
e86ce104 | 6679 | if (fh != NULL) |
34814b9f | 6680 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6681 | } |
6682 | } | |
6683 | ||
411e1bfb | 6684 | static bfd_boolean |
8843416a AM |
6685 | get_sym_h (struct elf_link_hash_entry **hp, |
6686 | Elf_Internal_Sym **symp, | |
6687 | asection **symsecp, | |
f961d9dd | 6688 | unsigned char **tls_maskp, |
8843416a AM |
6689 | Elf_Internal_Sym **locsymsp, |
6690 | unsigned long r_symndx, | |
6691 | bfd *ibfd) | |
411e1bfb | 6692 | { |
0ffa91dd | 6693 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6694 | |
6695 | if (r_symndx >= symtab_hdr->sh_info) | |
6696 | { | |
6697 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6698 | struct elf_link_hash_entry *h; | |
6699 | ||
6700 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6701 | h = elf_follow_link (h); |
411e1bfb AM |
6702 | |
6703 | if (hp != NULL) | |
6704 | *hp = h; | |
6705 | ||
6706 | if (symp != NULL) | |
6707 | *symp = NULL; | |
6708 | ||
6709 | if (symsecp != NULL) | |
6710 | { | |
6711 | asection *symsec = NULL; | |
6712 | if (h->root.type == bfd_link_hash_defined | |
6713 | || h->root.type == bfd_link_hash_defweak) | |
6714 | symsec = h->root.u.def.section; | |
6715 | *symsecp = symsec; | |
6716 | } | |
6717 | ||
e7b938ca | 6718 | if (tls_maskp != NULL) |
ed7007c1 | 6719 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; |
411e1bfb AM |
6720 | } |
6721 | else | |
6722 | { | |
6723 | Elf_Internal_Sym *sym; | |
6724 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6725 | ||
6726 | if (locsyms == NULL) | |
6727 | { | |
6728 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6729 | if (locsyms == NULL) | |
6730 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6731 | symtab_hdr->sh_info, | |
6732 | 0, NULL, NULL, NULL); | |
6733 | if (locsyms == NULL) | |
6734 | return FALSE; | |
6735 | *locsymsp = locsyms; | |
6736 | } | |
6737 | sym = locsyms + r_symndx; | |
6738 | ||
6739 | if (hp != NULL) | |
6740 | *hp = NULL; | |
6741 | ||
6742 | if (symp != NULL) | |
6743 | *symp = sym; | |
6744 | ||
6745 | if (symsecp != NULL) | |
cb33740c | 6746 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6747 | |
e7b938ca | 6748 | if (tls_maskp != NULL) |
411e1bfb AM |
6749 | { |
6750 | struct got_entry **lgot_ents; | |
f961d9dd | 6751 | unsigned char *tls_mask; |
411e1bfb | 6752 | |
e7b938ca | 6753 | tls_mask = NULL; |
411e1bfb AM |
6754 | lgot_ents = elf_local_got_ents (ibfd); |
6755 | if (lgot_ents != NULL) | |
6756 | { | |
e054468f AM |
6757 | struct plt_entry **local_plt = (struct plt_entry **) |
6758 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6759 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6760 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6761 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6762 | } |
e7b938ca | 6763 | *tls_maskp = tls_mask; |
411e1bfb AM |
6764 | } |
6765 | } | |
6766 | return TRUE; | |
6767 | } | |
6768 | ||
e7b938ca | 6769 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6770 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6771 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6772 | |
6773 | static int | |
f961d9dd | 6774 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6775 | unsigned long *toc_symndx, |
6776 | bfd_vma *toc_addend, | |
0d4792f7 | 6777 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6778 | const Elf_Internal_Rela *rel, |
6779 | bfd *ibfd) | |
411e1bfb AM |
6780 | { |
6781 | unsigned long r_symndx; | |
0d4792f7 | 6782 | int next_r; |
411e1bfb AM |
6783 | struct elf_link_hash_entry *h; |
6784 | Elf_Internal_Sym *sym; | |
6785 | asection *sec; | |
6786 | bfd_vma off; | |
6787 | ||
6788 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6789 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6790 | return 0; |
411e1bfb | 6791 | |
37da22e5 AM |
6792 | if ((*tls_maskp != NULL |
6793 | && (**tls_maskp & TLS_TLS) != 0 | |
6794 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6795 | || sec == NULL |
6bee8834 | 6796 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6797 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6798 | return 1; |
411e1bfb AM |
6799 | |
6800 | /* Look inside a TOC section too. */ | |
6801 | if (h != NULL) | |
6802 | { | |
6803 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6804 | off = h->root.u.def.value; | |
6805 | } | |
6806 | else | |
6807 | off = sym->st_value; | |
6808 | off += rel->r_addend; | |
6809 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6810 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6811 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6812 | if (toc_symndx != NULL) |
6813 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6814 | if (toc_addend != NULL) |
6815 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6816 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6817 | return 0; | |
854b41e7 | 6818 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6819 | && (next_r == -1 || next_r == -2)) |
6820 | return 1 - next_r; | |
951fd09b | 6821 | return 1; |
411e1bfb AM |
6822 | } |
6823 | ||
3b421ab3 AM |
6824 | /* Find (or create) an entry in the tocsave hash table. */ |
6825 | ||
6826 | static struct tocsave_entry * | |
6827 | tocsave_find (struct ppc_link_hash_table *htab, | |
6828 | enum insert_option insert, | |
6829 | Elf_Internal_Sym **local_syms, | |
6830 | const Elf_Internal_Rela *irela, | |
6831 | bfd *ibfd) | |
6832 | { | |
6833 | unsigned long r_indx; | |
6834 | struct elf_link_hash_entry *h; | |
6835 | Elf_Internal_Sym *sym; | |
6836 | struct tocsave_entry ent, *p; | |
6837 | hashval_t hash; | |
6838 | struct tocsave_entry **slot; | |
6839 | ||
6840 | r_indx = ELF64_R_SYM (irela->r_info); | |
6841 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6842 | return NULL; | |
6843 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6844 | { | |
4eca0228 | 6845 | _bfd_error_handler |
871b3ab2 | 6846 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6847 | return NULL; |
6848 | } | |
6849 | ||
6850 | if (h != NULL) | |
6851 | ent.offset = h->root.u.def.value; | |
6852 | else | |
6853 | ent.offset = sym->st_value; | |
6854 | ent.offset += irela->r_addend; | |
6855 | ||
6856 | hash = tocsave_htab_hash (&ent); | |
6857 | slot = ((struct tocsave_entry **) | |
6858 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6859 | if (slot == NULL) | |
6860 | return NULL; | |
6861 | ||
6862 | if (*slot == NULL) | |
6863 | { | |
6864 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6865 | if (p == NULL) | |
6866 | return NULL; | |
6867 | *p = ent; | |
6868 | *slot = p; | |
6869 | } | |
6870 | return *slot; | |
6871 | } | |
6872 | ||
754021d0 | 6873 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6874 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6875 | |
6876 | static bfd_boolean | |
6877 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6878 | { | |
6879 | struct ppc_link_hash_entry *eh; | |
6880 | asection *sym_sec; | |
74f0fb50 | 6881 | struct _opd_sec_data *opd; |
754021d0 AM |
6882 | |
6883 | if (h->root.type == bfd_link_hash_indirect) | |
6884 | return TRUE; | |
6885 | ||
754021d0 AM |
6886 | if (h->root.type != bfd_link_hash_defined |
6887 | && h->root.type != bfd_link_hash_defweak) | |
6888 | return TRUE; | |
6889 | ||
ed7007c1 | 6890 | eh = ppc_elf_hash_entry (h); |
754021d0 AM |
6891 | if (eh->adjust_done) |
6892 | return TRUE; | |
6893 | ||
6894 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6895 | opd = get_opd_info (sym_sec); |
6896 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6897 | { |
51aecdc5 | 6898 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6899 | if (adjust == -1) |
6900 | { | |
6901 | /* This entry has been deleted. */ | |
b3fac117 | 6902 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6903 | if (dsec == NULL) |
6904 | { | |
6905 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6906 | if (discarded_section (dsec)) |
81688140 | 6907 | { |
b3fac117 | 6908 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6909 | break; |
6910 | } | |
6911 | } | |
4025353c | 6912 | eh->elf.root.u.def.value = 0; |
81688140 | 6913 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6914 | } |
6915 | else | |
6916 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6917 | eh->adjust_done = 1; |
6918 | } | |
6919 | return TRUE; | |
6920 | } | |
6921 | ||
8c1d1bb8 | 6922 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6923 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6924 | have already been determined. */ |
6925 | ||
6926 | static bfd_boolean | |
6927 | dec_dynrel_count (bfd_vma r_info, | |
6928 | asection *sec, | |
6929 | struct bfd_link_info *info, | |
6930 | Elf_Internal_Sym **local_syms, | |
6931 | struct elf_link_hash_entry *h, | |
19e08130 | 6932 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6933 | { |
6934 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6935 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6936 | |
6937 | /* Can this reloc be dynamic? This switch, and later tests here | |
6938 | should be kept in sync with the code in check_relocs. */ | |
6939 | r_type = ELF64_R_TYPE (r_info); | |
6940 | switch (r_type) | |
6941 | { | |
6942 | default: | |
6943 | return TRUE; | |
6944 | ||
1bdd8fac AM |
6945 | case R_PPC64_TOC16: |
6946 | case R_PPC64_TOC16_DS: | |
6947 | case R_PPC64_TOC16_LO: | |
6948 | case R_PPC64_TOC16_HI: | |
6949 | case R_PPC64_TOC16_HA: | |
6950 | case R_PPC64_TOC16_LO_DS: | |
6951 | if (h == NULL) | |
6952 | return TRUE; | |
6953 | break; | |
6954 | ||
8c1d1bb8 AM |
6955 | case R_PPC64_TPREL16: |
6956 | case R_PPC64_TPREL16_LO: | |
6957 | case R_PPC64_TPREL16_HI: | |
6958 | case R_PPC64_TPREL16_HA: | |
6959 | case R_PPC64_TPREL16_DS: | |
6960 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6961 | case R_PPC64_TPREL16_HIGH: |
6962 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6963 | case R_PPC64_TPREL16_HIGHER: |
6964 | case R_PPC64_TPREL16_HIGHERA: | |
6965 | case R_PPC64_TPREL16_HIGHEST: | |
6966 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 6967 | case R_PPC64_TPREL64: |
c213164a | 6968 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
6969 | case R_PPC64_DTPMOD64: |
6970 | case R_PPC64_DTPREL64: | |
6971 | case R_PPC64_ADDR64: | |
6972 | case R_PPC64_REL30: | |
6973 | case R_PPC64_REL32: | |
6974 | case R_PPC64_REL64: | |
6975 | case R_PPC64_ADDR14: | |
6976 | case R_PPC64_ADDR14_BRNTAKEN: | |
6977 | case R_PPC64_ADDR14_BRTAKEN: | |
6978 | case R_PPC64_ADDR16: | |
6979 | case R_PPC64_ADDR16_DS: | |
6980 | case R_PPC64_ADDR16_HA: | |
6981 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
6982 | case R_PPC64_ADDR16_HIGH: |
6983 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
6984 | case R_PPC64_ADDR16_HIGHER: |
6985 | case R_PPC64_ADDR16_HIGHERA: | |
6986 | case R_PPC64_ADDR16_HIGHEST: | |
6987 | case R_PPC64_ADDR16_HIGHESTA: | |
6988 | case R_PPC64_ADDR16_LO: | |
6989 | case R_PPC64_ADDR16_LO_DS: | |
6990 | case R_PPC64_ADDR24: | |
6991 | case R_PPC64_ADDR32: | |
6992 | case R_PPC64_UADDR16: | |
6993 | case R_PPC64_UADDR32: | |
6994 | case R_PPC64_UADDR64: | |
6995 | case R_PPC64_TOC: | |
5663e321 AM |
6996 | case R_PPC64_D34: |
6997 | case R_PPC64_D34_LO: | |
6998 | case R_PPC64_D34_HI30: | |
6999 | case R_PPC64_D34_HA30: | |
7000 | case R_PPC64_ADDR16_HIGHER34: | |
7001 | case R_PPC64_ADDR16_HIGHERA34: | |
7002 | case R_PPC64_ADDR16_HIGHEST34: | |
7003 | case R_PPC64_ADDR16_HIGHESTA34: | |
7004 | case R_PPC64_D28: | |
8c1d1bb8 AM |
7005 | break; |
7006 | } | |
7007 | ||
7008 | if (local_syms != NULL) | |
7009 | { | |
7010 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7011 | bfd *ibfd = sec->owner; |
7012 | ||
7013 | r_symndx = ELF64_R_SYM (r_info); | |
7014 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7015 | return FALSE; | |
7016 | } | |
7017 | ||
ec73ddcd AM |
7018 | if ((h != NULL |
7019 | && (h->root.type == bfd_link_hash_defweak | |
7020 | || !h->def_regular)) | |
7021 | || (h != NULL | |
7022 | && !bfd_link_executable (info) | |
7023 | && !SYMBOLIC_BIND (info, h)) | |
7024 | || (bfd_link_pic (info) | |
7025 | && must_be_dyn_reloc (info, r_type)) | |
7026 | || (!bfd_link_pic (info) | |
7027 | && (h != NULL | |
7028 | ? h->type == STT_GNU_IFUNC | |
7029 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
7030 | ; |
7031 | else | |
7032 | return TRUE; | |
7033 | ||
7034 | if (h != NULL) | |
6edfbbad | 7035 | { |
19e08130 AM |
7036 | struct elf_dyn_relocs *p; |
7037 | struct elf_dyn_relocs **pp; | |
190eb1dd | 7038 | pp = &h->dyn_relocs; |
19e08130 AM |
7039 | |
7040 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7041 | with local syms for a given section. Also, symbol flags are | |
7042 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7043 | report a dynreloc miscount. */ | |
7044 | if (*pp == NULL && info->gc_sections) | |
7045 | return TRUE; | |
7046 | ||
7047 | while ((p = *pp) != NULL) | |
60124e18 | 7048 | { |
19e08130 AM |
7049 | if (p->sec == sec) |
7050 | { | |
7051 | if (!must_be_dyn_reloc (info, r_type)) | |
7052 | p->pc_count -= 1; | |
7053 | p->count -= 1; | |
7054 | if (p->count == 0) | |
7055 | *pp = p->next; | |
7056 | return TRUE; | |
7057 | } | |
7058 | pp = &p->next; | |
60124e18 | 7059 | } |
6edfbbad | 7060 | } |
19e08130 AM |
7061 | else |
7062 | { | |
7063 | struct ppc_dyn_relocs *p; | |
7064 | struct ppc_dyn_relocs **pp; | |
7065 | void *vpp; | |
7066 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7067 | |
19e08130 AM |
7068 | if (local_syms == NULL) |
7069 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7070 | if (sym_sec == NULL) | |
7071 | sym_sec = sec; | |
c57da1a7 | 7072 | |
19e08130 AM |
7073 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7074 | pp = (struct ppc_dyn_relocs **) vpp; | |
7075 | ||
7076 | if (*pp == NULL && info->gc_sections) | |
7077 | return TRUE; | |
7078 | ||
7079 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7080 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7081 | { |
19e08130 AM |
7082 | if (p->sec == sec && p->ifunc == is_ifunc) |
7083 | { | |
7084 | p->count -= 1; | |
7085 | if (p->count == 0) | |
7086 | *pp = p->next; | |
7087 | return TRUE; | |
7088 | } | |
7089 | pp = &p->next; | |
8c1d1bb8 | 7090 | } |
8c1d1bb8 AM |
7091 | } |
7092 | ||
695344c0 | 7093 | /* xgettext:c-format */ |
cf97bcb0 AM |
7094 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7095 | sec->owner, sec); | |
8c1d1bb8 AM |
7096 | bfd_set_error (bfd_error_bad_value); |
7097 | return FALSE; | |
7098 | } | |
7099 | ||
754021d0 AM |
7100 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7101 | only remove those associated with functions in discarded link-once | |
7102 | sections, or weakly defined functions that have been overridden. It | |
7103 | would be possible to remove many more entries for statically linked | |
7104 | applications. */ | |
7105 | ||
b34976b6 | 7106 | bfd_boolean |
e7d1c40c | 7107 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7108 | { |
7109 | bfd *ibfd; | |
754021d0 | 7110 | bfd_boolean some_edited = FALSE; |
3f764659 | 7111 | asection *need_pad = NULL; |
e7d1c40c AM |
7112 | struct ppc_link_hash_table *htab; |
7113 | ||
7114 | htab = ppc_hash_table (info); | |
7115 | if (htab == NULL) | |
7116 | return FALSE; | |
1e2f5b6e | 7117 | |
c72f2fb2 | 7118 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7119 | { |
7120 | asection *sec; | |
7121 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7122 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7123 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7124 | struct _opd_sec_data *opd; |
51aecdc5 | 7125 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7126 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7127 | |
854b41e7 AM |
7128 | if (!is_ppc64_elf (ibfd)) |
7129 | continue; | |
7130 | ||
1e2f5b6e | 7131 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7132 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7133 | continue; |
7134 | ||
dbaa2011 | 7135 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7136 | continue; |
7137 | ||
1e2f5b6e AM |
7138 | if (sec->output_section == bfd_abs_section_ptr) |
7139 | continue; | |
7140 | ||
7141 | /* Look through the section relocs. */ | |
7142 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7143 | continue; | |
7144 | ||
6cdc0ccc | 7145 | local_syms = NULL; |
0ffa91dd | 7146 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7147 | |
7148 | /* Read the relocations. */ | |
4ce794b7 | 7149 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7150 | info->keep_memory); |
1e2f5b6e | 7151 | if (relstart == NULL) |
b34976b6 | 7152 | return FALSE; |
1e2f5b6e AM |
7153 | |
7154 | /* First run through the relocs to check they are sane, and to | |
7155 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7156 | need_edit = FALSE; |
51aecdc5 | 7157 | broken = FALSE; |
3f764659 | 7158 | need_pad = sec; |
1e2f5b6e | 7159 | relend = relstart + sec->reloc_count; |
50bc7936 | 7160 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7161 | { |
04c9666a | 7162 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7163 | unsigned long r_symndx; |
7164 | asection *sym_sec; | |
7165 | struct elf_link_hash_entry *h; | |
7166 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7167 | bfd_vma offset; |
1e2f5b6e | 7168 | |
51aecdc5 | 7169 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7170 | only interested in the reloc pointing to a function entry |
7171 | point. */ | |
51aecdc5 AM |
7172 | offset = rel->r_offset; |
7173 | if (rel + 1 == relend | |
7174 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7175 | { |
7176 | /* If someone messes with .opd alignment then after a | |
7177 | "ld -r" we might have padding in the middle of .opd. | |
7178 | Also, there's nothing to prevent someone putting | |
7179 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7180 | optimization for them! */ |
3f764659 | 7181 | broken_opd: |
4eca0228 | 7182 | _bfd_error_handler |
871b3ab2 | 7183 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7184 | broken = TRUE; |
1e2f5b6e AM |
7185 | break; |
7186 | } | |
7187 | ||
50bc7936 AM |
7188 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7189 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7190 | { | |
4eca0228 | 7191 | _bfd_error_handler |
695344c0 | 7192 | /* xgettext:c-format */ |
871b3ab2 | 7193 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7194 | ibfd, r_type); |
51aecdc5 | 7195 | broken = TRUE; |
50bc7936 AM |
7196 | break; |
7197 | } | |
7198 | ||
1e2f5b6e | 7199 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7200 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7201 | r_symndx, ibfd)) | |
50bc7936 | 7202 | goto error_ret; |
1e2f5b6e AM |
7203 | |
7204 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7205 | { | |
411e1bfb AM |
7206 | const char *sym_name; |
7207 | if (h != NULL) | |
7208 | sym_name = h->root.root.string; | |
7209 | else | |
26c61ae5 L |
7210 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7211 | sym_sec); | |
411e1bfb | 7212 | |
4eca0228 | 7213 | _bfd_error_handler |
695344c0 | 7214 | /* xgettext:c-format */ |
871b3ab2 | 7215 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7216 | ibfd, sym_name); |
51aecdc5 | 7217 | broken = TRUE; |
1e2f5b6e AM |
7218 | break; |
7219 | } | |
7220 | ||
51020317 AM |
7221 | /* opd entries are always for functions defined in the |
7222 | current input bfd. If the symbol isn't defined in the | |
7223 | input bfd, then we won't be using the function in this | |
7224 | bfd; It must be defined in a linkonce section in another | |
7225 | bfd, or is weak. It's also possible that we are | |
7226 | discarding the function due to a linker script /DISCARD/, | |
7227 | which we test for via the output_section. */ | |
7228 | if (sym_sec->owner != ibfd | |
7229 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7230 | need_edit = TRUE; |
1e2f5b6e | 7231 | |
50bc7936 | 7232 | rel += 2; |
51aecdc5 AM |
7233 | if (rel + 1 == relend |
7234 | || (rel + 2 < relend | |
7235 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7236 | ++rel; | |
7237 | ||
7238 | if (rel == relend) | |
3f764659 JJ |
7239 | { |
7240 | if (sec->size == offset + 24) | |
7241 | { | |
7242 | need_pad = NULL; | |
7243 | break; | |
7244 | } | |
51aecdc5 | 7245 | if (sec->size == offset + 16) |
3f764659 JJ |
7246 | { |
7247 | cnt_16b++; | |
7248 | break; | |
7249 | } | |
7250 | goto broken_opd; | |
7251 | } | |
3f764659 JJ |
7252 | else if (rel + 1 < relend |
7253 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7254 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7255 | { | |
51aecdc5 AM |
7256 | if (rel[0].r_offset == offset + 16) |
7257 | cnt_16b++; | |
7258 | else if (rel[0].r_offset != offset + 24) | |
7259 | goto broken_opd; | |
3f764659 JJ |
7260 | } |
7261 | else | |
7262 | goto broken_opd; | |
1e2f5b6e AM |
7263 | } |
7264 | ||
e7d1c40c | 7265 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7266 | |
51aecdc5 | 7267 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7268 | { |
7269 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7270 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7271 | bfd_byte *rptr, *wptr; |
983bddc8 | 7272 | bfd_byte *new_contents; |
74f0fb50 AM |
7273 | bfd_size_type amt; |
7274 | ||
983bddc8 | 7275 | new_contents = NULL; |
51aecdc5 | 7276 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7277 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7278 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7279 | if (opd->adjust == NULL) |
7280 | return FALSE; | |
1e2f5b6e AM |
7281 | |
7282 | /* This seems a waste of time as input .opd sections are all | |
7283 | zeros as generated by gcc, but I suppose there's no reason | |
7284 | this will always be so. We might start putting something in | |
7285 | the third word of .opd entries. */ | |
7286 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7287 | { | |
eea6121a AM |
7288 | bfd_byte *loc; |
7289 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7290 | { |
c9594989 | 7291 | free (loc); |
50bc7936 | 7292 | error_ret: |
c9594989 | 7293 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
6cdc0ccc | 7294 | free (local_syms); |
6cdc0ccc AM |
7295 | if (elf_section_data (sec)->relocs != relstart) |
7296 | free (relstart); | |
b34976b6 | 7297 | return FALSE; |
6cdc0ccc | 7298 | } |
1e2f5b6e AM |
7299 | sec->contents = loc; |
7300 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7301 | } | |
7302 | ||
7303 | elf_section_data (sec)->relocs = relstart; | |
7304 | ||
3f764659 | 7305 | new_contents = sec->contents; |
3f764659 JJ |
7306 | if (add_aux_fields) |
7307 | { | |
7308 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7309 | if (new_contents == NULL) | |
7310 | return FALSE; | |
51aecdc5 | 7311 | need_pad = NULL; |
3f764659 | 7312 | } |
b4f4e59f AM |
7313 | wptr = new_contents; |
7314 | rptr = sec->contents; | |
1e2f5b6e | 7315 | write_rel = relstart; |
51aecdc5 | 7316 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7317 | { |
50bc7936 AM |
7318 | unsigned long r_symndx; |
7319 | asection *sym_sec; | |
7320 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7321 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7322 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7323 | long opd_ent_size; |
7324 | Elf_Internal_Rela *next_rel; | |
7325 | bfd_boolean skip; | |
50bc7936 AM |
7326 | |
7327 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7328 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7329 | r_symndx, ibfd)) |
50bc7936 AM |
7330 | goto error_ret; |
7331 | ||
51aecdc5 AM |
7332 | next_rel = rel + 2; |
7333 | if (next_rel + 1 == relend | |
7334 | || (next_rel + 2 < relend | |
7335 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7336 | ++next_rel; | |
7337 | ||
7338 | /* See if the .opd entry is full 24 byte or | |
7339 | 16 byte (with fd_aux entry overlapped with next | |
7340 | fd_func). */ | |
7341 | opd_ent_size = 24; | |
7342 | if (next_rel == relend) | |
1e2f5b6e | 7343 | { |
51aecdc5 | 7344 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7345 | opd_ent_size = 16; |
51aecdc5 AM |
7346 | } |
7347 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7348 | opd_ent_size = 16; | |
3f764659 | 7349 | |
51aecdc5 AM |
7350 | if (h != NULL |
7351 | && h->root.root.string[0] == '.') | |
7352 | { | |
ed7007c1 | 7353 | fdh = ppc_elf_hash_entry (h)->oh; |
8c5b4e52 AM |
7354 | if (fdh != NULL) |
7355 | { | |
7356 | fdh = ppc_follow_link (fdh); | |
7357 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7358 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7359 | fdh = NULL; | |
7360 | } | |
51aecdc5 | 7361 | } |
1e2f5b6e | 7362 | |
51aecdc5 AM |
7363 | skip = (sym_sec->owner != ibfd |
7364 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7365 | if (skip) | |
7366 | { | |
7367 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7368 | { |
51aecdc5 AM |
7369 | /* Arrange for the function descriptor sym |
7370 | to be dropped. */ | |
7371 | fdh->elf.root.u.def.value = 0; | |
7372 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7373 | } |
51aecdc5 | 7374 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7375 | |
0e1862bb | 7376 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7377 | rel = next_rel; |
7378 | else | |
7379 | while (1) | |
7380 | { | |
7381 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7382 | NULL, h, sym)) | |
7383 | goto error_ret; | |
754021d0 | 7384 | |
51aecdc5 AM |
7385 | if (++rel == next_rel) |
7386 | break; | |
1e2f5b6e | 7387 | |
51aecdc5 AM |
7388 | r_symndx = ELF64_R_SYM (rel->r_info); |
7389 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7390 | r_symndx, ibfd)) | |
7391 | goto error_ret; | |
7392 | } | |
50bc7936 AM |
7393 | } |
7394 | else | |
1e2f5b6e | 7395 | { |
51aecdc5 AM |
7396 | /* We'll be keeping this opd entry. */ |
7397 | long adjust; | |
7398 | ||
7399 | if (fdh != NULL) | |
7400 | { | |
7401 | /* Redefine the function descriptor symbol to | |
7402 | this location in the opd section. It is | |
7403 | necessary to update the value here rather | |
7404 | than using an array of adjustments as we do | |
7405 | for local symbols, because various places | |
7406 | in the generic ELF code use the value | |
7407 | stored in u.def.value. */ | |
7408 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7409 | fdh->adjust_done = 1; | |
7410 | } | |
7411 | ||
7412 | /* Local syms are a bit tricky. We could | |
7413 | tweak them as they can be cached, but | |
7414 | we'd need to look through the local syms | |
7415 | for the function descriptor sym which we | |
7416 | don't have at the moment. So keep an | |
7417 | array of adjustments. */ | |
7418 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7419 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7420 | ||
7421 | if (wptr != rptr) | |
7422 | memcpy (wptr, rptr, opd_ent_size); | |
7423 | wptr += opd_ent_size; | |
7424 | if (add_aux_fields && opd_ent_size == 16) | |
7425 | { | |
7426 | memset (wptr, '\0', 8); | |
7427 | wptr += 8; | |
7428 | } | |
7429 | ||
50bc7936 | 7430 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7431 | new opd entries. */ |
7432 | for ( ; rel != next_rel; ++rel) | |
7433 | { | |
7434 | rel->r_offset += adjust; | |
7435 | if (write_rel != rel) | |
7436 | memcpy (write_rel, rel, sizeof (*rel)); | |
7437 | ++write_rel; | |
7438 | } | |
1e2f5b6e | 7439 | } |
51aecdc5 AM |
7440 | |
7441 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7442 | } |
7443 | ||
3f764659 | 7444 | sec->size = wptr - new_contents; |
1e2f5b6e | 7445 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7446 | if (add_aux_fields) |
7447 | { | |
7448 | free (sec->contents); | |
7449 | sec->contents = new_contents; | |
7450 | } | |
7451 | ||
05bf9422 | 7452 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7453 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7454 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7455 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7456 | some_edited = TRUE; |
1e2f5b6e | 7457 | } |
6cdc0ccc | 7458 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7459 | free (relstart); |
6cdc0ccc | 7460 | |
411e1bfb AM |
7461 | if (local_syms != NULL |
7462 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7463 | { | |
7464 | if (!info->keep_memory) | |
7465 | free (local_syms); | |
7466 | else | |
7467 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7468 | } | |
7469 | } | |
7470 | ||
754021d0 AM |
7471 | if (some_edited) |
7472 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7473 | ||
3f764659 JJ |
7474 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7475 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7476 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7477 | { |
7478 | bfd_byte *p; | |
7479 | ||
7480 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7481 | { | |
7482 | BFD_ASSERT (need_pad->size > 0); | |
7483 | ||
7484 | p = bfd_malloc (need_pad->size + 8); | |
7485 | if (p == NULL) | |
7486 | return FALSE; | |
699733f6 | 7487 | |
2cdcc330 AM |
7488 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7489 | p, 0, need_pad->size)) | |
3f764659 JJ |
7490 | return FALSE; |
7491 | ||
7492 | need_pad->contents = p; | |
7493 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7494 | } | |
7495 | else | |
7496 | { | |
7497 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7498 | if (p == NULL) | |
7499 | return FALSE; | |
7500 | ||
7501 | need_pad->contents = p; | |
7502 | } | |
7503 | ||
7504 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7505 | need_pad->size += 8; | |
7506 | } | |
7507 | ||
411e1bfb AM |
7508 | return TRUE; |
7509 | } | |
7510 | ||
3e04d765 AM |
7511 | /* Analyze inline PLT call relocations to see whether calls to locally |
7512 | defined functions can be converted to direct calls. */ | |
7513 | ||
7514 | bfd_boolean | |
7515 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7516 | { | |
7517 | struct ppc_link_hash_table *htab; | |
7518 | bfd *ibfd; | |
7519 | asection *sec; | |
7520 | bfd_vma low_vma, high_vma, limit; | |
7521 | ||
7522 | htab = ppc_hash_table (info); | |
7523 | if (htab == NULL) | |
7524 | return FALSE; | |
7525 | ||
7526 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7527 | reduced somewhat to cater for possible stubs that might be added | |
7528 | between the call and its destination. */ | |
7529 | if (htab->params->group_size < 0) | |
7530 | { | |
7531 | limit = -htab->params->group_size; | |
7532 | if (limit == 1) | |
7533 | limit = 0x1e00000; | |
7534 | } | |
7535 | else | |
7536 | { | |
7537 | limit = htab->params->group_size; | |
7538 | if (limit == 1) | |
7539 | limit = 0x1c00000; | |
7540 | } | |
7541 | ||
7542 | low_vma = -1; | |
7543 | high_vma = 0; | |
7544 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7545 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7546 | { | |
7547 | if (low_vma > sec->vma) | |
7548 | low_vma = sec->vma; | |
7549 | if (high_vma < sec->vma + sec->size) | |
7550 | high_vma = sec->vma + sec->size; | |
7551 | } | |
7552 | ||
7553 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7554 | convert all inline PLT sequences to direct calls when the symbol | |
7555 | is local. */ | |
7556 | if (high_vma - low_vma < limit) | |
7557 | { | |
7558 | htab->can_convert_all_inline_plt = 1; | |
7559 | return TRUE; | |
7560 | } | |
7561 | ||
7562 | /* Otherwise, go looking through relocs for cases where a direct | |
7563 | call won't reach. Mark the symbol on any such reloc to disable | |
7564 | the optimization and keep the PLT entry as it seems likely that | |
7565 | this will be better than creating trampolines. Note that this | |
7566 | will disable the optimization for all inline PLT calls to a | |
7567 | particular symbol, not just those that won't reach. The | |
7568 | difficulty in doing a more precise optimization is that the | |
7569 | linker needs to make a decision depending on whether a | |
7570 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7571 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7572 | the sequence, and there is nothing that ties those relocs | |
7573 | together except their symbol. */ | |
7574 | ||
7575 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7576 | { | |
7577 | Elf_Internal_Shdr *symtab_hdr; | |
7578 | Elf_Internal_Sym *local_syms; | |
7579 | ||
7580 | if (!is_ppc64_elf (ibfd)) | |
7581 | continue; | |
7582 | ||
7583 | local_syms = NULL; | |
7584 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7585 | ||
7586 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7587 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7588 | && !bfd_is_abs_section (sec->output_section)) | |
7589 | { | |
7590 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7591 | ||
7592 | /* Read the relocations. */ | |
7593 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7594 | info->keep_memory); | |
7595 | if (relstart == NULL) | |
7596 | return FALSE; | |
7597 | ||
7598 | relend = relstart + sec->reloc_count; | |
435edf0b | 7599 | for (rel = relstart; rel < relend; rel++) |
3e04d765 AM |
7600 | { |
7601 | enum elf_ppc64_reloc_type r_type; | |
7602 | unsigned long r_symndx; | |
7603 | asection *sym_sec; | |
7604 | struct elf_link_hash_entry *h; | |
7605 | Elf_Internal_Sym *sym; | |
7606 | unsigned char *tls_maskp; | |
7607 | ||
7608 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7609 | if (r_type != R_PPC64_PLTCALL |
7610 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7611 | continue; |
7612 | ||
7613 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7614 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7615 | r_symndx, ibfd)) | |
7616 | { | |
7617 | if (elf_section_data (sec)->relocs != relstart) | |
7618 | free (relstart); | |
c9594989 | 7619 | if (symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7620 | free (local_syms); |
7621 | return FALSE; | |
7622 | } | |
7623 | ||
7624 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7625 | { | |
7626 | bfd_vma from, to; | |
7627 | if (h != NULL) | |
7628 | to = h->root.u.def.value; | |
7629 | else | |
7630 | to = sym->st_value; | |
7631 | to += (rel->r_addend | |
7632 | + sym_sec->output_offset | |
7633 | + sym_sec->output_section->vma); | |
7634 | from = (rel->r_offset | |
7635 | + sec->output_offset | |
7636 | + sec->output_section->vma); | |
5663e321 AM |
7637 | if (to - from + limit < 2 * limit |
7638 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7639 | && (((h ? h->other : sym->st_other) | |
7640 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7641 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7642 | *tls_maskp &= ~PLT_KEEP; |
7643 | } | |
7644 | } | |
7645 | if (elf_section_data (sec)->relocs != relstart) | |
7646 | free (relstart); | |
7647 | } | |
7648 | ||
7649 | if (local_syms != NULL | |
7650 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7651 | { | |
7652 | if (!info->keep_memory) | |
7653 | free (local_syms); | |
7654 | else | |
7655 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7656 | } | |
7657 | } | |
7658 | ||
7659 | return TRUE; | |
7660 | } | |
7661 | ||
e1918d23 | 7662 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7663 | |
e1918d23 | 7664 | asection * |
e7d1c40c | 7665 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7666 | { |
411e1bfb | 7667 | struct ppc_link_hash_table *htab; |
9e7028aa | 7668 | struct elf_link_hash_entry *tga, *tga_fd, *desc, *desc_fd; |
411e1bfb | 7669 | |
411e1bfb | 7670 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7671 | if (htab == NULL) |
7672 | return NULL; | |
7673 | ||
ee67d69a AM |
7674 | if (abiversion (info->output_bfd) == 1) |
7675 | htab->opd_abi = 1; | |
7676 | ||
e7d1c40c | 7677 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7678 | htab->do_multi_toc = 0; |
7679 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7680 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7681 | |
8b5f1ed8 AM |
7682 | /* Default to --no-plt-localentry, as this option can cause problems |
7683 | with symbol interposition. For example, glibc libpthread.so and | |
7684 | libc.so duplicate many pthread symbols, with a fallback | |
7685 | implementation in libc.so. In some cases the fallback does more | |
7686 | work than the pthread implementation. __pthread_condattr_destroy | |
7687 | is one such symbol: the libpthread.so implementation is | |
7688 | localentry:0 while the libc.so implementation is localentry:8. | |
7689 | An app that "cleverly" uses dlopen to only load necessary | |
7690 | libraries at runtime may omit loading libpthread.so when not | |
7691 | running multi-threaded, which then results in the libc.so | |
7692 | fallback symbols being used and ld.so complaining. Now there | |
7693 | are workarounds in ld (see non_zero_localentry) to detect the | |
7694 | pthread situation, but that may not be the only case where | |
7695 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7696 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7697 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7698 | if (htab->params->plt_localentry0 |
7699 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7700 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7701 | _bfd_error_handler |
7702 | (_("warning: --plt-localentry is especially dangerous without " | |
7703 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7704 | |
9e7028aa AM |
7705 | tga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
7706 | FALSE, FALSE, TRUE); | |
7707 | htab->tls_get_addr = ppc_elf_hash_entry (tga); | |
7708 | ||
a7f2871e | 7709 | /* Move dynamic linking info to the function descriptor sym. */ |
9e7028aa AM |
7710 | if (tga != NULL) |
7711 | func_desc_adjust (tga, info); | |
7712 | tga_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7713 | FALSE, FALSE, TRUE); | |
7714 | htab->tls_get_addr_fd = ppc_elf_hash_entry (tga_fd); | |
7715 | ||
7716 | desc = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_desc", | |
7717 | FALSE, FALSE, TRUE); | |
7718 | htab->tga_desc = ppc_elf_hash_entry (desc); | |
7719 | if (desc != NULL) | |
7720 | func_desc_adjust (desc, info); | |
7721 | desc_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_desc", | |
7722 | FALSE, FALSE, TRUE); | |
7723 | htab->tga_desc_fd = ppc_elf_hash_entry (desc_fd); | |
7724 | ||
7c9cf415 | 7725 | if (htab->params->tls_get_addr_opt) |
a7f2871e | 7726 | { |
9e7028aa | 7727 | struct elf_link_hash_entry *opt, *opt_fd; |
a7f2871e AM |
7728 | |
7729 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7730 | FALSE, FALSE, TRUE); | |
7731 | if (opt != NULL) | |
7732 | func_desc_adjust (opt, info); | |
7733 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7734 | FALSE, FALSE, TRUE); | |
7735 | if (opt_fd != NULL | |
7736 | && (opt_fd->root.type == bfd_link_hash_defined | |
7737 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7738 | { | |
7739 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7740 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7741 | be calling __tls_get_addr via a plt call stub, then | |
7742 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
9e7028aa AM |
7743 | if (!(htab->elf.dynamic_sections_created |
7744 | && tga_fd != NULL | |
7745 | && (tga_fd->type == STT_FUNC | |
7746 | || tga_fd->needs_plt) | |
7747 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7748 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))) | |
7749 | tga_fd = NULL; | |
7750 | if (!(htab->elf.dynamic_sections_created | |
7751 | && desc_fd != NULL | |
7752 | && (desc_fd->type == STT_FUNC | |
7753 | || desc_fd->needs_plt) | |
7754 | && !(SYMBOL_CALLS_LOCAL (info, desc_fd) | |
7755 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, desc_fd)))) | |
7756 | desc_fd = NULL; | |
7757 | ||
7758 | if (tga_fd != NULL || desc_fd != NULL) | |
7759 | { | |
7760 | struct plt_entry *ent = NULL; | |
7761 | ||
7762 | if (tga_fd != NULL) | |
7763 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7764 | if (ent->plt.refcount > 0) | |
7765 | break; | |
7766 | if (ent == NULL && desc_fd != NULL) | |
7767 | for (ent = desc_fd->plt.plist; ent != NULL; ent = ent->next) | |
7768 | if (ent->plt.refcount > 0) | |
7769 | break; | |
a7f2871e AM |
7770 | if (ent != NULL) |
7771 | { | |
9e7028aa AM |
7772 | if (tga_fd != NULL) |
7773 | { | |
7774 | tga_fd->root.type = bfd_link_hash_indirect; | |
7775 | tga_fd->root.u.i.link = &opt_fd->root; | |
7776 | tga_fd->root.u.i.warning = NULL; | |
7777 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7778 | } | |
7779 | if (desc_fd != NULL) | |
7780 | { | |
7781 | desc_fd->root.type = bfd_link_hash_indirect; | |
7782 | desc_fd->root.u.i.link = &opt_fd->root; | |
7783 | desc_fd->root.u.i.warning = NULL; | |
7784 | ppc64_elf_copy_indirect_symbol (info, opt_fd, desc_fd); | |
7785 | } | |
b531344c | 7786 | opt_fd->mark = 1; |
a7f2871e AM |
7787 | if (opt_fd->dynindx != -1) |
7788 | { | |
7789 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7790 | opt_fd->dynindx = -1; | |
7791 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7792 | opt_fd->dynstr_index); | |
7793 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7794 | return NULL; |
a7f2871e | 7795 | } |
9e7028aa | 7796 | if (tga_fd != NULL) |
a7f2871e | 7797 | { |
9e7028aa AM |
7798 | htab->tls_get_addr_fd = ppc_elf_hash_entry (opt_fd); |
7799 | tga = &htab->tls_get_addr->elf; | |
7800 | if (opt != NULL && tga != NULL) | |
7801 | { | |
7802 | tga->root.type = bfd_link_hash_indirect; | |
7803 | tga->root.u.i.link = &opt->root; | |
7804 | tga->root.u.i.warning = NULL; | |
7805 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7806 | opt->mark = 1; | |
7807 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7808 | tga->forced_local); | |
7809 | htab->tls_get_addr = ppc_elf_hash_entry (opt); | |
7810 | } | |
7811 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7812 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7813 | if (htab->tls_get_addr != NULL) | |
7814 | { | |
7815 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7816 | htab->tls_get_addr->is_func = 1; | |
7817 | } | |
a7f2871e | 7818 | } |
9e7028aa | 7819 | if (desc_fd != NULL) |
a7f2871e | 7820 | { |
9e7028aa AM |
7821 | htab->tga_desc_fd = ppc_elf_hash_entry (opt_fd); |
7822 | if (opt != NULL && desc != NULL) | |
7823 | { | |
7824 | desc->root.type = bfd_link_hash_indirect; | |
7825 | desc->root.u.i.link = &opt->root; | |
7826 | desc->root.u.i.warning = NULL; | |
7827 | ppc64_elf_copy_indirect_symbol (info, opt, desc); | |
7828 | opt->mark = 1; | |
7829 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7830 | desc->forced_local); | |
7831 | htab->tga_desc = ppc_elf_hash_entry (opt); | |
7832 | } | |
7833 | htab->tga_desc_fd->oh = htab->tga_desc; | |
7834 | htab->tga_desc_fd->is_func_descriptor = 1; | |
7835 | if (htab->tga_desc != NULL) | |
7836 | { | |
7837 | htab->tga_desc->oh = htab->tga_desc_fd; | |
7838 | htab->tga_desc->is_func = 1; | |
7839 | } | |
a7f2871e AM |
7840 | } |
7841 | } | |
7842 | } | |
7843 | } | |
7c9cf415 AM |
7844 | else if (htab->params->tls_get_addr_opt < 0) |
7845 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7846 | } |
9e7028aa AM |
7847 | |
7848 | if (htab->tga_desc_fd != NULL | |
7849 | && htab->params->tls_get_addr_opt | |
7850 | && htab->params->no_tls_get_addr_regsave == -1) | |
7851 | htab->params->no_tls_get_addr_regsave = 0; | |
7852 | ||
33c0ec9d | 7853 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7854 | } |
8387904d | 7855 | |
3a71aa26 | 7856 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
9e7028aa | 7857 | any of HASH1, HASH2, HASH3, or HASH4. */ |
8387904d | 7858 | |
3a71aa26 AM |
7859 | static bfd_boolean |
7860 | branch_reloc_hash_match (const bfd *ibfd, | |
7861 | const Elf_Internal_Rela *rel, | |
7862 | const struct ppc_link_hash_entry *hash1, | |
9e7028aa AM |
7863 | const struct ppc_link_hash_entry *hash2, |
7864 | const struct ppc_link_hash_entry *hash3, | |
7865 | const struct ppc_link_hash_entry *hash4) | |
3a71aa26 AM |
7866 | { |
7867 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7868 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7869 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7870 | ||
e054468f | 7871 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7872 | { |
3a71aa26 AM |
7873 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7874 | struct elf_link_hash_entry *h; | |
8387904d | 7875 | |
3a71aa26 | 7876 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7877 | h = elf_follow_link (h); |
9e7028aa AM |
7878 | if (h == &hash1->elf || h == &hash2->elf |
7879 | || h == &hash3->elf || h == &hash4->elf) | |
3a71aa26 | 7880 | return TRUE; |
a48ebf4d | 7881 | } |
3a71aa26 | 7882 | return FALSE; |
951fd09b | 7883 | } |
411e1bfb | 7884 | |
951fd09b AM |
7885 | /* Run through all the TLS relocs looking for optimization |
7886 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7887 | a preliminary section layout so that we know the TLS segment | |
7888 | offsets. We can't optimize earlier because some optimizations need | |
7889 | to know the tp offset, and we need to optimize before allocating | |
7890 | dynamic relocations. */ | |
7891 | ||
7892 | bfd_boolean | |
33c0ec9d | 7893 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7894 | { |
7895 | bfd *ibfd; | |
7896 | asection *sec; | |
7897 | struct ppc_link_hash_table *htab; | |
663a1470 | 7898 | unsigned char *toc_ref; |
102890f0 | 7899 | int pass; |
951fd09b | 7900 | |
3cbc1e5e | 7901 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7902 | return TRUE; |
7903 | ||
951fd09b | 7904 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7905 | if (htab == NULL) |
7906 | return FALSE; | |
7907 | ||
663a1470 AM |
7908 | /* Make two passes over the relocs. On the first pass, mark toc |
7909 | entries involved with tls relocs, and check that tls relocs | |
7910 | involved in setting up a tls_get_addr call are indeed followed by | |
7911 | such a call. If they are not, we can't do any tls optimization. | |
7912 | On the second pass twiddle tls_mask flags to notify | |
7913 | relocate_section that optimization can be done, and adjust got | |
7914 | and plt refcounts. */ | |
7915 | toc_ref = NULL; | |
7916 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7917 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7918 | { |
7919 | Elf_Internal_Sym *locsyms = NULL; | |
7920 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7921 | ||
102890f0 AM |
7922 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7923 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7924 | { | |
7925 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7926 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7927 | |
102890f0 AM |
7928 | /* Read the relocations. */ |
7929 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7930 | info->keep_memory); | |
7931 | if (relstart == NULL) | |
2915c55b JK |
7932 | { |
7933 | free (toc_ref); | |
7934 | return FALSE; | |
7935 | } | |
411e1bfb | 7936 | |
102890f0 AM |
7937 | relend = relstart + sec->reloc_count; |
7938 | for (rel = relstart; rel < relend; rel++) | |
7939 | { | |
7940 | enum elf_ppc64_reloc_type r_type; | |
7941 | unsigned long r_symndx; | |
7942 | struct elf_link_hash_entry *h; | |
7943 | Elf_Internal_Sym *sym; | |
7944 | asection *sym_sec; | |
f961d9dd | 7945 | unsigned char *tls_mask; |
46e9995a | 7946 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 AM |
7947 | bfd_vma value; |
7948 | bfd_boolean ok_tprel, is_local; | |
7949 | long toc_ref_index = 0; | |
7950 | int expecting_tls_get_addr = 0; | |
663a1470 | 7951 | bfd_boolean ret = FALSE; |
411e1bfb | 7952 | |
102890f0 AM |
7953 | r_symndx = ELF64_R_SYM (rel->r_info); |
7954 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7955 | r_symndx, ibfd)) | |
7956 | { | |
7957 | err_free_rel: | |
7958 | if (elf_section_data (sec)->relocs != relstart) | |
7959 | free (relstart); | |
c9594989 AM |
7960 | free (toc_ref); |
7961 | if (elf_symtab_hdr (ibfd).contents | |
7962 | != (unsigned char *) locsyms) | |
102890f0 | 7963 | free (locsyms); |
663a1470 | 7964 | return ret; |
102890f0 | 7965 | } |
411e1bfb | 7966 | |
102890f0 AM |
7967 | if (h != NULL) |
7968 | { | |
766bc656 AM |
7969 | if (h->root.type == bfd_link_hash_defined |
7970 | || h->root.type == bfd_link_hash_defweak) | |
7971 | value = h->root.u.def.value; | |
7972 | else if (h->root.type == bfd_link_hash_undefweak) | |
7973 | value = 0; | |
7974 | else | |
663a1470 AM |
7975 | { |
7976 | found_tls_get_addr_arg = 0; | |
7977 | continue; | |
7978 | } | |
102890f0 AM |
7979 | } |
7980 | else | |
7981 | /* Symbols referenced by TLS relocs must be of type | |
7982 | STT_TLS. So no need for .opd local sym adjust. */ | |
7983 | value = sym->st_value; | |
7984 | ||
7985 | ok_tprel = FALSE; | |
f749f26e AM |
7986 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
7987 | if (is_local) | |
102890f0 | 7988 | { |
766bc656 AM |
7989 | if (h != NULL |
7990 | && h->root.type == bfd_link_hash_undefweak) | |
7991 | ok_tprel = TRUE; | |
c27b8c2a AM |
7992 | else if (sym_sec != NULL |
7993 | && sym_sec->output_section != NULL) | |
766bc656 AM |
7994 | { |
7995 | value += sym_sec->output_offset; | |
7996 | value += sym_sec->output_section->vma; | |
0b147428 | 7997 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
7998 | /* Note that even though the prefix insns |
7999 | allow a 1<<33 offset we use the same test | |
8000 | as for addis;addi. There may be a mix of | |
8001 | pcrel and non-pcrel code and the decision | |
8002 | to optimise is per symbol, not per TLS | |
8003 | sequence. */ | |
0b147428 | 8004 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 8005 | } |
102890f0 | 8006 | } |
951fd09b | 8007 | |
102890f0 | 8008 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8009 | /* If this section has old-style __tls_get_addr calls |
8010 | without marker relocs, then check that each | |
8011 | __tls_get_addr call reloc is preceded by a reloc | |
8012 | that conceivably belongs to the __tls_get_addr arg | |
8013 | setup insn. If we don't find matching arg setup | |
8014 | relocs, don't do any tls optimization. */ | |
8015 | if (pass == 0 | |
9737e8af | 8016 | && sec->nomark_tls_get_addr |
663a1470 | 8017 | && h != NULL |
ed7007c1 | 8018 | && is_tls_get_addr (h, htab) |
663a1470 AM |
8019 | && !found_tls_get_addr_arg |
8020 | && is_branch_reloc (r_type)) | |
8021 | { | |
25f53a85 | 8022 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8023 | "TLS optimization disabled\n"), |
8024 | ibfd, sec, rel->r_offset); | |
8025 | ret = TRUE; | |
8026 | goto err_free_rel; | |
8027 | } | |
8028 | ||
8029 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8030 | switch (r_type) |
8031 | { | |
8032 | case R_PPC64_GOT_TLSLD16: | |
8033 | case R_PPC64_GOT_TLSLD16_LO: | |
87c69f97 | 8034 | case R_PPC64_GOT_TLSLD_PCREL34: |
102890f0 | 8035 | expecting_tls_get_addr = 1; |
663a1470 | 8036 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8037 | /* Fall through. */ |
102890f0 AM |
8038 | |
8039 | case R_PPC64_GOT_TLSLD16_HI: | |
8040 | case R_PPC64_GOT_TLSLD16_HA: | |
8041 | /* These relocs should never be against a symbol | |
8042 | defined in a shared lib. Leave them alone if | |
8043 | that turns out to be the case. */ | |
8044 | if (!is_local) | |
8045 | continue; | |
411e1bfb | 8046 | |
102890f0 | 8047 | /* LD -> LE */ |
411e1bfb | 8048 | tls_set = 0; |
102890f0 AM |
8049 | tls_clear = TLS_LD; |
8050 | tls_type = TLS_TLS | TLS_LD; | |
8051 | break; | |
411e1bfb | 8052 | |
102890f0 AM |
8053 | case R_PPC64_GOT_TLSGD16: |
8054 | case R_PPC64_GOT_TLSGD16_LO: | |
87c69f97 | 8055 | case R_PPC64_GOT_TLSGD_PCREL34: |
102890f0 | 8056 | expecting_tls_get_addr = 1; |
663a1470 | 8057 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8058 | /* Fall through. */ |
102890f0 AM |
8059 | |
8060 | case R_PPC64_GOT_TLSGD16_HI: | |
8061 | case R_PPC64_GOT_TLSGD16_HA: | |
8062 | if (ok_tprel) | |
8063 | /* GD -> LE */ | |
411e1bfb | 8064 | tls_set = 0; |
102890f0 AM |
8065 | else |
8066 | /* GD -> IE */ | |
b00a0a86 | 8067 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
8068 | tls_clear = TLS_GD; |
8069 | tls_type = TLS_TLS | TLS_GD; | |
8070 | break; | |
8071 | ||
87c69f97 | 8072 | case R_PPC64_GOT_TPREL_PCREL34: |
102890f0 AM |
8073 | case R_PPC64_GOT_TPREL16_DS: |
8074 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8075 | case R_PPC64_GOT_TPREL16_HI: | |
8076 | case R_PPC64_GOT_TPREL16_HA: | |
8077 | if (ok_tprel) | |
8078 | { | |
8079 | /* IE -> LE */ | |
8080 | tls_set = 0; | |
8081 | tls_clear = TLS_TPREL; | |
8082 | tls_type = TLS_TLS | TLS_TPREL; | |
8083 | break; | |
8084 | } | |
411e1bfb AM |
8085 | continue; |
8086 | ||
727fc41e | 8087 | case R_PPC64_TLSLD: |
7d04a20a AM |
8088 | if (!is_local) |
8089 | continue; | |
8090 | /* Fall through. */ | |
8091 | case R_PPC64_TLSGD: | |
23cedd1d AM |
8092 | if (rel + 1 < relend |
8093 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8094 | { | |
8095 | if (pass != 0 | |
2cdcc330 | 8096 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
8097 | != R_PPC64_PLTSEQ) |
8098 | && (ELF64_R_TYPE (rel[1].r_info) | |
8099 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
8100 | { |
8101 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8102 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8103 | r_symndx, ibfd)) |
23cedd1d AM |
8104 | goto err_free_rel; |
8105 | if (h != NULL) | |
8106 | { | |
8107 | struct plt_entry *ent = NULL; | |
8108 | ||
8109 | for (ent = h->plt.plist; | |
8110 | ent != NULL; | |
8111 | ent = ent->next) | |
8112 | if (ent->addend == rel[1].r_addend) | |
8113 | break; | |
8114 | ||
8115 | if (ent != NULL | |
8116 | && ent->plt.refcount > 0) | |
8117 | ent->plt.refcount -= 1; | |
8118 | } | |
8119 | } | |
8120 | continue; | |
8121 | } | |
663a1470 | 8122 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8123 | /* Fall through. */ |
663a1470 AM |
8124 | |
8125 | case R_PPC64_TLS: | |
8126 | case R_PPC64_TOC16: | |
8127 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8128 | if (sym_sec == NULL || sym_sec != toc) |
8129 | continue; | |
8130 | ||
8131 | /* Mark this toc entry as referenced by a TLS | |
8132 | code sequence. We can do that now in the | |
8133 | case of R_PPC64_TLS, and after checking for | |
8134 | tls_get_addr for the TOC16 relocs. */ | |
8135 | if (toc_ref == NULL) | |
2cdcc330 AM |
8136 | toc_ref |
8137 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8138 | if (toc_ref == NULL) |
8139 | goto err_free_rel; | |
8140 | ||
102890f0 AM |
8141 | if (h != NULL) |
8142 | value = h->root.u.def.value; | |
8143 | else | |
8144 | value = sym->st_value; | |
8145 | value += rel->r_addend; | |
73242275 AM |
8146 | if (value % 8 != 0) |
8147 | continue; | |
8148 | BFD_ASSERT (value < toc->size | |
8149 | && toc->output_offset % 8 == 0); | |
663a1470 | 8150 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8151 | if (r_type == R_PPC64_TLS |
8152 | || r_type == R_PPC64_TLSGD | |
8153 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8154 | { |
8155 | toc_ref[toc_ref_index] = 1; | |
8156 | continue; | |
8157 | } | |
8158 | ||
8159 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8160 | continue; | |
8161 | ||
8162 | tls_set = 0; | |
8163 | tls_clear = 0; | |
8164 | expecting_tls_get_addr = 2; | |
8165 | break; | |
8166 | ||
8167 | case R_PPC64_TPREL64: | |
8168 | if (pass == 0 | |
8169 | || sec != toc | |
8170 | || toc_ref == NULL | |
663a1470 | 8171 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8172 | continue; |
8173 | if (ok_tprel) | |
8174 | { | |
8175 | /* IE -> LE */ | |
8176 | tls_set = TLS_EXPLICIT; | |
8177 | tls_clear = TLS_TPREL; | |
8178 | break; | |
8179 | } | |
8180 | continue; | |
8181 | ||
8182 | case R_PPC64_DTPMOD64: | |
8183 | if (pass == 0 | |
8184 | || sec != toc | |
8185 | || toc_ref == NULL | |
663a1470 | 8186 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8187 | continue; |
8188 | if (rel + 1 < relend | |
8189 | && (rel[1].r_info | |
8190 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8191 | && rel[1].r_offset == rel->r_offset + 8) | |
8192 | { | |
8193 | if (ok_tprel) | |
8194 | /* GD -> LE */ | |
8195 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8196 | else | |
8197 | /* GD -> IE */ | |
b00a0a86 | 8198 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8199 | tls_clear = TLS_GD; |
8200 | } | |
8201 | else | |
8202 | { | |
8203 | if (!is_local) | |
8204 | continue; | |
8205 | ||
8206 | /* LD -> LE */ | |
8207 | tls_set = TLS_EXPLICIT; | |
8208 | tls_clear = TLS_LD; | |
8209 | } | |
8210 | break; | |
8211 | ||
8212 | default: | |
8213 | continue; | |
8214 | } | |
8215 | ||
8216 | if (pass == 0) | |
8217 | { | |
727fc41e | 8218 | if (!expecting_tls_get_addr |
9737e8af | 8219 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8220 | continue; |
8221 | ||
3a71aa26 AM |
8222 | if (rel + 1 < relend |
8223 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9e7028aa AM |
8224 | htab->tls_get_addr_fd, |
8225 | htab->tga_desc_fd, | |
3a71aa26 | 8226 | htab->tls_get_addr, |
9e7028aa | 8227 | htab->tga_desc)) |
102890f0 | 8228 | { |
3a71aa26 | 8229 | if (expecting_tls_get_addr == 2) |
102890f0 | 8230 | { |
3a71aa26 | 8231 | /* Check for toc tls entries. */ |
f961d9dd | 8232 | unsigned char *toc_tls; |
3a71aa26 AM |
8233 | int retval; |
8234 | ||
8235 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8236 | &locsyms, | |
8237 | rel, ibfd); | |
8238 | if (retval == 0) | |
8239 | goto err_free_rel; | |
663a1470 AM |
8240 | if (toc_tls != NULL) |
8241 | { | |
37da22e5 AM |
8242 | if ((*toc_tls & TLS_TLS) != 0 |
8243 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8244 | found_tls_get_addr_arg = 1; |
8245 | if (retval > 1) | |
8246 | toc_ref[toc_ref_index] = 1; | |
8247 | } | |
102890f0 | 8248 | } |
3a71aa26 | 8249 | continue; |
102890f0 AM |
8250 | } |
8251 | ||
102890f0 AM |
8252 | /* Uh oh, we didn't find the expected call. We |
8253 | could just mark this symbol to exclude it | |
8254 | from tls optimization but it's safer to skip | |
663a1470 | 8255 | the entire optimization. */ |
695344c0 | 8256 | /* xgettext:c-format */ |
25f53a85 | 8257 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8258 | "TLS optimization disabled\n"), |
8259 | ibfd, sec, rel->r_offset); | |
8260 | ret = TRUE; | |
8261 | goto err_free_rel; | |
102890f0 AM |
8262 | } |
8263 | ||
37da22e5 AM |
8264 | /* If we don't have old-style __tls_get_addr calls |
8265 | without TLSGD/TLSLD marker relocs, and we haven't | |
8266 | found a new-style __tls_get_addr call with a | |
8267 | marker for this symbol, then we either have a | |
8268 | broken object file or an -mlongcall style | |
8269 | indirect call to __tls_get_addr without a marker. | |
8270 | Disable optimization in this case. */ | |
8271 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8272 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8273 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8274 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8275 | != (TLS_TLS | TLS_MARK))) | |
8276 | continue; | |
8277 | ||
7d04a20a | 8278 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8279 | { |
23cedd1d AM |
8280 | struct plt_entry *ent = NULL; |
8281 | ||
9e7028aa AM |
8282 | if (htab->tls_get_addr_fd != NULL) |
8283 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8284 | ent != NULL; | |
8285 | ent = ent->next) | |
8286 | if (ent->addend == 0) | |
8287 | break; | |
8288 | ||
8289 | if (ent == NULL && htab->tga_desc_fd != NULL) | |
8290 | for (ent = htab->tga_desc_fd->elf.plt.plist; | |
8291 | ent != NULL; | |
8292 | ent = ent->next) | |
8293 | if (ent->addend == 0) | |
8294 | break; | |
8295 | ||
8296 | if (ent == NULL && htab->tls_get_addr != NULL) | |
23cedd1d AM |
8297 | for (ent = htab->tls_get_addr->elf.plt.plist; |
8298 | ent != NULL; | |
8299 | ent = ent->next) | |
8300 | if (ent->addend == 0) | |
102890f0 | 8301 | break; |
411e1bfb | 8302 | |
9e7028aa AM |
8303 | if (ent == NULL && htab->tga_desc != NULL) |
8304 | for (ent = htab->tga_desc->elf.plt.plist; | |
23cedd1d AM |
8305 | ent != NULL; |
8306 | ent = ent->next) | |
8307 | if (ent->addend == 0) | |
102890f0 | 8308 | break; |
23cedd1d AM |
8309 | |
8310 | if (ent != NULL | |
8311 | && ent->plt.refcount > 0) | |
8312 | ent->plt.refcount -= 1; | |
102890f0 | 8313 | } |
411e1bfb | 8314 | |
102890f0 | 8315 | if (tls_clear == 0) |
30038c59 AM |
8316 | continue; |
8317 | ||
102890f0 AM |
8318 | if ((tls_set & TLS_EXPLICIT) == 0) |
8319 | { | |
8320 | struct got_entry *ent; | |
411e1bfb | 8321 | |
102890f0 AM |
8322 | /* Adjust got entry for this reloc. */ |
8323 | if (h != NULL) | |
8324 | ent = h->got.glist; | |
8325 | else | |
8326 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8327 | |
102890f0 AM |
8328 | for (; ent != NULL; ent = ent->next) |
8329 | if (ent->addend == rel->r_addend | |
8330 | && ent->owner == ibfd | |
8331 | && ent->tls_type == tls_type) | |
8332 | break; | |
8333 | if (ent == NULL) | |
8334 | abort (); | |
411e1bfb | 8335 | |
102890f0 AM |
8336 | if (tls_set == 0) |
8337 | { | |
8338 | /* We managed to get rid of a got entry. */ | |
8339 | if (ent->got.refcount > 0) | |
8340 | ent->got.refcount -= 1; | |
8341 | } | |
8342 | } | |
8343 | else | |
8344 | { | |
8345 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8346 | we'll lose one or two dyn relocs. */ | |
8347 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8348 | NULL, h, sym)) |
102890f0 | 8349 | return FALSE; |
411e1bfb | 8350 | |
102890f0 AM |
8351 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8352 | { | |
8353 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8354 | NULL, h, sym)) |
102890f0 AM |
8355 | return FALSE; |
8356 | } | |
8357 | } | |
411e1bfb | 8358 | |
46e9995a | 8359 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8360 | *tls_mask &= ~tls_clear; |
8361 | } | |
8c1d1bb8 | 8362 | |
102890f0 AM |
8363 | if (elf_section_data (sec)->relocs != relstart) |
8364 | free (relstart); | |
8365 | } | |
411e1bfb | 8366 | |
663a1470 AM |
8367 | if (locsyms != NULL |
8368 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8369 | { | |
8370 | if (!info->keep_memory) | |
8371 | free (locsyms); | |
8372 | else | |
8373 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8374 | } | |
8375 | } | |
411e1bfb | 8376 | |
c9594989 | 8377 | free (toc_ref); |
9a23f96e | 8378 | htab->do_tls_opt = 1; |
b34976b6 | 8379 | return TRUE; |
1e2f5b6e | 8380 | } |
b34976b6 | 8381 | |
c5614fa4 AM |
8382 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8383 | the values of any global symbols in a toc section that has been | |
8384 | edited. Globals in toc sections should be a rarity, so this function | |
8385 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8386 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8387 | |
8388 | struct adjust_toc_info | |
8389 | { | |
8390 | asection *toc; | |
8391 | unsigned long *skip; | |
8392 | bfd_boolean global_toc_syms; | |
8393 | }; | |
8394 | ||
ba761f19 AM |
8395 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8396 | ||
c5614fa4 AM |
8397 | static bfd_boolean |
8398 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8399 | { | |
8400 | struct ppc_link_hash_entry *eh; | |
8401 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8402 | unsigned long i; |
c5614fa4 | 8403 | |
c5614fa4 AM |
8404 | if (h->root.type != bfd_link_hash_defined |
8405 | && h->root.type != bfd_link_hash_defweak) | |
8406 | return TRUE; | |
8407 | ||
ed7007c1 | 8408 | eh = ppc_elf_hash_entry (h); |
c5614fa4 AM |
8409 | if (eh->adjust_done) |
8410 | return TRUE; | |
8411 | ||
8412 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8413 | { | |
854b41e7 AM |
8414 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8415 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8416 | else |
854b41e7 AM |
8417 | i = eh->elf.root.u.def.value >> 3; |
8418 | ||
ba761f19 | 8419 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8420 | { |
4eca0228 | 8421 | _bfd_error_handler |
854b41e7 AM |
8422 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8423 | do | |
8424 | ++i; | |
ba761f19 | 8425 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8426 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8427 | } |
854b41e7 AM |
8428 | |
8429 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8430 | eh->adjust_done = 1; |
8431 | } | |
8432 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8433 | toc_inf->global_toc_syms = TRUE; | |
8434 | ||
8435 | return TRUE; | |
8436 | } | |
8437 | ||
39eeab25 AM |
8438 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8439 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8440 | |
8441 | static bfd_boolean | |
39eeab25 | 8442 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8443 | { |
2365f8d7 AM |
8444 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8445 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8446 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8447 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8448 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8449 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8450 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8451 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8452 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8453 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8454 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8455 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8456 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8457 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8458 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8459 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8460 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8461 | /* Exclude lfqu by testing reloc. If relocs are ever |
8462 | defined for the reduced D field in psq_lu then those | |
8463 | will need testing too. */ | |
8464 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8465 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8466 | && (insn & 1) == 0) |
2365f8d7 AM |
8467 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8468 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8469 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8470 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8471 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8472 | && (insn & 1) == 0)); |
560c8763 AM |
8473 | } |
8474 | ||
4a421c53 AM |
8475 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8476 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8477 | load/store rt,off(ra) |
4a421c53 | 8478 | or |
d4b87b1e | 8479 | pla ra,symbol@pcrel |
dd9b12c2 | 8480 | load/store rt,off(ra) |
4a421c53 | 8481 | may be translated to |
dd9b12c2 | 8482 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8483 | nop. |
8484 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8485 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8486 | |
8487 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8488 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8489 | while *PINSN2 is the second instruction. */ |
8490 | ||
8491 | static bfd_boolean | |
dd9b12c2 | 8492 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8493 | { |
77486630 AM |
8494 | uint64_t insn1 = *pinsn1; |
8495 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8496 | bfd_signed_vma off; |
4a421c53 | 8497 | |
77486630 AM |
8498 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8499 | { | |
8500 | /* Check that regs match. */ | |
8501 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
8502 | return FALSE; | |
8503 | ||
8504 | /* P8LS or PMLS form, non-pcrel. */ | |
8505 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
8506 | return FALSE; | |
8507 | ||
8508 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8509 | *pinsn2 = PNOP; | |
8510 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8511 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
8512 | return TRUE; | |
8513 | } | |
8514 | ||
8515 | insn2 >>= 32; | |
8516 | ||
4a421c53 | 8517 | /* Check that regs match. */ |
77486630 | 8518 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
4a421c53 AM |
8519 | return FALSE; |
8520 | ||
8521 | switch ((insn2 >> 26) & 63) | |
8522 | { | |
8523 | default: | |
8524 | return FALSE; | |
8525 | ||
8526 | case 32: /* lwz */ | |
8527 | case 34: /* lbz */ | |
8528 | case 36: /* stw */ | |
8529 | case 38: /* stb */ | |
8530 | case 40: /* lhz */ | |
8531 | case 42: /* lha */ | |
8532 | case 44: /* sth */ | |
8533 | case 48: /* lfs */ | |
8534 | case 50: /* lfd */ | |
8535 | case 52: /* stfs */ | |
8536 | case 54: /* stfd */ | |
8537 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8538 | on the insn. */ |
77486630 | 8539 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8540 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8541 | off = insn2 & 0xffff; |
4a421c53 AM |
8542 | break; |
8543 | ||
8544 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8545 | if ((insn2 & 1) != 0) |
4a421c53 | 8546 | return FALSE; |
77486630 | 8547 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8548 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8549 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8550 | off = insn2 & 0xfffc; |
4a421c53 AM |
8551 | break; |
8552 | ||
8553 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8554 | if ((insn2 & 3) < 2) |
4a421c53 | 8555 | return FALSE; |
77486630 | 8556 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8557 | | ((40ULL | (insn2 & 3)) << 26) |
8558 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8559 | off = insn2 & 0xfffc; |
4a421c53 AM |
8560 | break; |
8561 | ||
8562 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8563 | if ((insn2 & 3) == 0) | |
8564 | return FALSE; | |
8565 | else if ((insn2 & 3) >= 2) | |
8566 | { | |
77486630 | 8567 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8568 | | ((44ULL | (insn2 & 3)) << 26) |
8569 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8570 | off = insn2 & 0xfffc; |
4a421c53 AM |
8571 | } |
8572 | else | |
8573 | { | |
77486630 | 8574 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8575 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8576 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8577 | off = insn2 & 0xfff0; |
4a421c53 AM |
8578 | } |
8579 | break; | |
8580 | ||
8581 | case 56: /* lq */ | |
77486630 | 8582 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8583 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8584 | off = insn2 & 0xffff; |
4a421c53 AM |
8585 | break; |
8586 | ||
94ba9882 AM |
8587 | case 6: /* lxvp, stxvp */ |
8588 | if ((insn2 & 0xe) != 0) | |
8589 | return FALSE; | |
8590 | insn1 = ((1ULL << 58) | (1ULL << 52) | |
8591 | | ((insn2 & 1) == 0 ? 58ULL << 26 : 62ULL << 26) | |
8592 | | (insn2 & (31ULL << 21))); | |
8593 | off = insn2 & 0xfff0; | |
8594 | break; | |
8595 | ||
4a421c53 | 8596 | case 62: /* std, stq */ |
dd9b12c2 | 8597 | if ((insn2 & 1) != 0) |
4a421c53 | 8598 | return FALSE; |
77486630 | 8599 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8600 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8601 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8602 | off = insn2 & 0xfffc; |
4a421c53 AM |
8603 | break; |
8604 | } | |
8605 | ||
77486630 | 8606 | *pinsn1 = insn1; |
4a421c53 | 8607 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8608 | *poff = (off ^ 0x8000) - 0x8000; |
4a421c53 AM |
8609 | return TRUE; |
8610 | } | |
8611 | ||
c5614fa4 AM |
8612 | /* Examine all relocs referencing .toc sections in order to remove |
8613 | unused .toc entries. */ | |
8614 | ||
8615 | bfd_boolean | |
33c0ec9d | 8616 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8617 | { |
8618 | bfd *ibfd; | |
8619 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8620 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8621 | |
67f0cbdb | 8622 | htab->do_toc_opt = 1; |
c5614fa4 | 8623 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8624 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8625 | { |
8626 | asection *toc, *sec; | |
8627 | Elf_Internal_Shdr *symtab_hdr; | |
8628 | Elf_Internal_Sym *local_syms; | |
425b145b | 8629 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8630 | unsigned long *skip, *drop; |
8631 | unsigned char *used; | |
8632 | unsigned char *keep, last, some_unused; | |
8633 | ||
854b41e7 AM |
8634 | if (!is_ppc64_elf (ibfd)) |
8635 | continue; | |
8636 | ||
c5614fa4 AM |
8637 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8638 | if (toc == NULL | |
92b7a70f | 8639 | || toc->size == 0 |
dbaa2011 AM |
8640 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8641 | || discarded_section (toc)) | |
c5614fa4 AM |
8642 | continue; |
8643 | ||
425b145b | 8644 | toc_relocs = NULL; |
c5614fa4 | 8645 | local_syms = NULL; |
0ffa91dd | 8646 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8647 | |
8648 | /* Look at sections dropped from the final link. */ | |
8649 | skip = NULL; | |
8650 | relstart = NULL; | |
8651 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8652 | { | |
8653 | if (sec->reloc_count == 0 | |
dbaa2011 | 8654 | || !discarded_section (sec) |
c5614fa4 AM |
8655 | || get_opd_info (sec) |
8656 | || (sec->flags & SEC_ALLOC) == 0 | |
8657 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8658 | continue; | |
8659 | ||
8660 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8661 | if (relstart == NULL) | |
8662 | goto error_ret; | |
8663 | ||
8664 | /* Run through the relocs to see which toc entries might be | |
8665 | unused. */ | |
8666 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8667 | { | |
8668 | enum elf_ppc64_reloc_type r_type; | |
8669 | unsigned long r_symndx; | |
8670 | asection *sym_sec; | |
8671 | struct elf_link_hash_entry *h; | |
8672 | Elf_Internal_Sym *sym; | |
8673 | bfd_vma val; | |
8674 | ||
8675 | r_type = ELF64_R_TYPE (rel->r_info); | |
8676 | switch (r_type) | |
8677 | { | |
8678 | default: | |
8679 | continue; | |
8680 | ||
8681 | case R_PPC64_TOC16: | |
8682 | case R_PPC64_TOC16_LO: | |
8683 | case R_PPC64_TOC16_HI: | |
8684 | case R_PPC64_TOC16_HA: | |
8685 | case R_PPC64_TOC16_DS: | |
8686 | case R_PPC64_TOC16_LO_DS: | |
8687 | break; | |
8688 | } | |
8689 | ||
8690 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8691 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8692 | r_symndx, ibfd)) | |
8693 | goto error_ret; | |
8694 | ||
8695 | if (sym_sec != toc) | |
8696 | continue; | |
8697 | ||
8698 | if (h != NULL) | |
8699 | val = h->root.u.def.value; | |
8700 | else | |
8701 | val = sym->st_value; | |
8702 | val += rel->r_addend; | |
8703 | ||
8704 | if (val >= toc->size) | |
8705 | continue; | |
8706 | ||
8707 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8708 | If not, don't mark as unused. */ | |
8709 | if (val & 7) | |
8710 | continue; | |
8711 | ||
8712 | if (skip == NULL) | |
8713 | { | |
854b41e7 | 8714 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8715 | if (skip == NULL) |
8716 | goto error_ret; | |
8717 | } | |
8718 | ||
ba761f19 | 8719 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8720 | } |
8721 | ||
8722 | if (elf_section_data (sec)->relocs != relstart) | |
8723 | free (relstart); | |
8724 | } | |
8725 | ||
ba761f19 AM |
8726 | /* For largetoc loads of address constants, we can convert |
8727 | . addis rx,2,addr@got@ha | |
8728 | . ld ry,addr@got@l(rx) | |
8729 | to | |
8730 | . addis rx,2,addr@toc@ha | |
8731 | . addi ry,rx,addr@toc@l | |
8732 | when addr is within 2G of the toc pointer. This then means | |
8733 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8734 | |
ba761f19 AM |
8735 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8736 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8737 | && toc->reloc_count != 0) | |
8738 | { | |
8739 | /* Read toc relocs. */ | |
425b145b AM |
8740 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8741 | info->keep_memory); | |
8742 | if (toc_relocs == NULL) | |
ba761f19 AM |
8743 | goto error_ret; |
8744 | ||
425b145b | 8745 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8746 | { |
8747 | enum elf_ppc64_reloc_type r_type; | |
8748 | unsigned long r_symndx; | |
8749 | asection *sym_sec; | |
8750 | struct elf_link_hash_entry *h; | |
8751 | Elf_Internal_Sym *sym; | |
8752 | bfd_vma val, addr; | |
8753 | ||
8754 | r_type = ELF64_R_TYPE (rel->r_info); | |
8755 | if (r_type != R_PPC64_ADDR64) | |
8756 | continue; | |
8757 | ||
8758 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8759 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8760 | r_symndx, ibfd)) | |
8761 | goto error_ret; | |
8762 | ||
425b145b | 8763 | if (sym_sec == NULL |
c27b8c2a | 8764 | || sym_sec->output_section == NULL |
dbaa2011 | 8765 | || discarded_section (sym_sec)) |
425b145b AM |
8766 | continue; |
8767 | ||
afe397ea | 8768 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8769 | continue; |
8770 | ||
8771 | if (h != NULL) | |
bddc25c9 AM |
8772 | { |
8773 | if (h->type == STT_GNU_IFUNC) | |
8774 | continue; | |
8775 | val = h->root.u.def.value; | |
8776 | } | |
ba761f19 | 8777 | else |
bddc25c9 AM |
8778 | { |
8779 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8780 | continue; | |
8781 | val = sym->st_value; | |
8782 | } | |
ba761f19 AM |
8783 | val += rel->r_addend; |
8784 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8785 | ||
8786 | /* We don't yet know the exact toc pointer value, but we | |
8787 | know it will be somewhere in the toc section. Don't | |
8788 | optimize if the difference from any possible toc | |
8789 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8790 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8791 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8792 | continue; | |
8793 | ||
8794 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8795 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8796 | continue; | |
8797 | ||
8798 | if (skip == NULL) | |
8799 | { | |
8800 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8801 | if (skip == NULL) | |
8802 | goto error_ret; | |
8803 | } | |
8804 | ||
8805 | skip[rel->r_offset >> 3] | |
425b145b | 8806 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8807 | } |
ba761f19 AM |
8808 | } |
8809 | ||
c5614fa4 AM |
8810 | if (skip == NULL) |
8811 | continue; | |
8812 | ||
8813 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8814 | if (used == NULL) | |
8815 | { | |
8816 | error_ret: | |
c9594989 | 8817 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
c5614fa4 AM |
8818 | free (local_syms); |
8819 | if (sec != NULL | |
c5614fa4 AM |
8820 | && elf_section_data (sec)->relocs != relstart) |
8821 | free (relstart); | |
c9594989 | 8822 | if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 8823 | free (toc_relocs); |
c9594989 | 8824 | free (skip); |
c5614fa4 AM |
8825 | return FALSE; |
8826 | } | |
8827 | ||
30038c59 AM |
8828 | /* Now check all kept sections that might reference the toc. |
8829 | Check the toc itself last. */ | |
8830 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8831 | : ibfd->sections); | |
c5614fa4 | 8832 | sec != NULL; |
c5614fa4 | 8833 | sec = (sec == toc ? NULL |
c5614fa4 | 8834 | : sec->next == NULL ? toc |
30038c59 | 8835 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8836 | : sec->next)) |
8837 | { | |
8838 | int repeat; | |
8839 | ||
8840 | if (sec->reloc_count == 0 | |
dbaa2011 | 8841 | || discarded_section (sec) |
c5614fa4 AM |
8842 | || get_opd_info (sec) |
8843 | || (sec->flags & SEC_ALLOC) == 0 | |
8844 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8845 | continue; | |
8846 | ||
854b41e7 AM |
8847 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8848 | info->keep_memory); | |
c5614fa4 | 8849 | if (relstart == NULL) |
2915c55b JK |
8850 | { |
8851 | free (used); | |
8852 | goto error_ret; | |
8853 | } | |
c5614fa4 AM |
8854 | |
8855 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8856 | do |
d4f1ee75 AM |
8857 | { |
8858 | repeat = 0; | |
8859 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8860 | { | |
8861 | enum elf_ppc64_reloc_type r_type; | |
8862 | unsigned long r_symndx; | |
8863 | asection *sym_sec; | |
8864 | struct elf_link_hash_entry *h; | |
8865 | Elf_Internal_Sym *sym; | |
8866 | bfd_vma val; | |
98528052 | 8867 | |
d4f1ee75 | 8868 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
8869 | switch (r_type) |
8870 | { | |
8871 | case R_PPC64_TOC16: | |
8872 | case R_PPC64_TOC16_LO: | |
8873 | case R_PPC64_TOC16_HI: | |
8874 | case R_PPC64_TOC16_HA: | |
8875 | case R_PPC64_TOC16_DS: | |
8876 | case R_PPC64_TOC16_LO_DS: | |
8877 | /* In case we're taking addresses of toc entries. */ | |
8878 | case R_PPC64_ADDR64: | |
8879 | break; | |
c5614fa4 | 8880 | |
d4f1ee75 AM |
8881 | default: |
8882 | continue; | |
8883 | } | |
c5614fa4 | 8884 | |
d4f1ee75 AM |
8885 | r_symndx = ELF64_R_SYM (rel->r_info); |
8886 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8887 | r_symndx, ibfd)) | |
8888 | { | |
8889 | free (used); | |
8890 | goto error_ret; | |
8891 | } | |
c5614fa4 | 8892 | |
d4f1ee75 AM |
8893 | if (sym_sec != toc) |
8894 | continue; | |
c5614fa4 | 8895 | |
d4f1ee75 AM |
8896 | if (h != NULL) |
8897 | val = h->root.u.def.value; | |
8898 | else | |
8899 | val = sym->st_value; | |
8900 | val += rel->r_addend; | |
ba761f19 | 8901 | |
d4f1ee75 AM |
8902 | if (val >= toc->size) |
8903 | continue; | |
ba761f19 | 8904 | |
d4f1ee75 AM |
8905 | if ((skip[val >> 3] & can_optimize) != 0) |
8906 | { | |
8907 | bfd_vma off; | |
8908 | unsigned char opc; | |
8909 | ||
8910 | switch (r_type) | |
8911 | { | |
8912 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8913 | break; |
ba761f19 | 8914 | |
d4f1ee75 AM |
8915 | case R_PPC64_TOC16_LO_DS: |
8916 | off = rel->r_offset; | |
8917 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8918 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8919 | off, 1)) | |
8920 | { | |
8921 | free (used); | |
8922 | goto error_ret; | |
8923 | } | |
8924 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8925 | break; | |
1a0670f3 | 8926 | /* Fall through. */ |
ba761f19 | 8927 | |
d4f1ee75 AM |
8928 | default: |
8929 | /* Wrong sort of reloc, or not a ld. We may | |
8930 | as well clear ref_from_discarded too. */ | |
8931 | skip[val >> 3] = 0; | |
8932 | } | |
8933 | } | |
8934 | ||
8935 | if (sec != toc) | |
8936 | used[val >> 3] = 1; | |
8937 | /* For the toc section, we only mark as used if this | |
8938 | entry itself isn't unused. */ | |
8939 | else if ((used[rel->r_offset >> 3] | |
8940 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8941 | && !used[val >> 3]) | |
8942 | { | |
8943 | /* Do all the relocs again, to catch reference | |
8944 | chains. */ | |
8945 | repeat = 1; | |
8946 | used[val >> 3] = 1; | |
8947 | } | |
8948 | } | |
8949 | } | |
c5614fa4 | 8950 | while (repeat); |
854b41e7 AM |
8951 | |
8952 | if (elf_section_data (sec)->relocs != relstart) | |
8953 | free (relstart); | |
c5614fa4 AM |
8954 | } |
8955 | ||
8956 | /* Merge the used and skip arrays. Assume that TOC | |
8957 | doublewords not appearing as either used or unused belong | |
de194d85 | 8958 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8959 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8960 | drop < skip + (toc->size + 7) / 8; | |
8961 | ++drop, ++keep) | |
8962 | { | |
8963 | if (*keep) | |
8964 | { | |
ba761f19 AM |
8965 | *drop &= ~ref_from_discarded; |
8966 | if ((*drop & can_optimize) != 0) | |
8967 | some_unused = 1; | |
c5614fa4 AM |
8968 | last = 0; |
8969 | } | |
b140b010 | 8970 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8971 | { |
8972 | some_unused = 1; | |
ba761f19 | 8973 | last = ref_from_discarded; |
c5614fa4 AM |
8974 | } |
8975 | else | |
8976 | *drop = last; | |
8977 | } | |
8978 | ||
8979 | free (used); | |
8980 | ||
8981 | if (some_unused) | |
8982 | { | |
8983 | bfd_byte *contents, *src; | |
8984 | unsigned long off; | |
d62b3684 | 8985 | Elf_Internal_Sym *sym; |
ba761f19 | 8986 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8987 | |
8988 | /* Shuffle the toc contents, and at the same time convert the | |
8989 | skip array from booleans into offsets. */ | |
8990 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8991 | goto error_ret; | |
8992 | ||
8993 | elf_section_data (toc)->this_hdr.contents = contents; | |
8994 | ||
8995 | for (src = contents, off = 0, drop = skip; | |
8996 | src < contents + toc->size; | |
8997 | src += 8, ++drop) | |
8998 | { | |
ba761f19 AM |
8999 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9000 | off += 8; | |
c5614fa4 AM |
9001 | else if (off != 0) |
9002 | { | |
9003 | *drop = off; | |
9004 | memcpy (src - off, src, 8); | |
9005 | } | |
9006 | } | |
854b41e7 | 9007 | *drop = off; |
c5614fa4 AM |
9008 | toc->rawsize = toc->size; |
9009 | toc->size = src - contents - off; | |
9010 | ||
ba761f19 AM |
9011 | /* Adjust addends for relocs against the toc section sym, |
9012 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9013 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9014 | { | |
9015 | if (sec->reloc_count == 0 | |
dbaa2011 | 9016 | || discarded_section (sec)) |
c5614fa4 AM |
9017 | continue; |
9018 | ||
9019 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9020 | info->keep_memory); |
c5614fa4 AM |
9021 | if (relstart == NULL) |
9022 | goto error_ret; | |
9023 | ||
9024 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9025 | { | |
9026 | enum elf_ppc64_reloc_type r_type; | |
9027 | unsigned long r_symndx; | |
9028 | asection *sym_sec; | |
9029 | struct elf_link_hash_entry *h; | |
854b41e7 | 9030 | bfd_vma val; |
c5614fa4 AM |
9031 | |
9032 | r_type = ELF64_R_TYPE (rel->r_info); | |
9033 | switch (r_type) | |
9034 | { | |
9035 | default: | |
9036 | continue; | |
9037 | ||
9038 | case R_PPC64_TOC16: | |
9039 | case R_PPC64_TOC16_LO: | |
9040 | case R_PPC64_TOC16_HI: | |
9041 | case R_PPC64_TOC16_HA: | |
9042 | case R_PPC64_TOC16_DS: | |
9043 | case R_PPC64_TOC16_LO_DS: | |
9044 | case R_PPC64_ADDR64: | |
9045 | break; | |
9046 | } | |
9047 | ||
9048 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9049 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9050 | r_symndx, ibfd)) | |
9051 | goto error_ret; | |
9052 | ||
ba761f19 | 9053 | if (sym_sec != toc) |
c5614fa4 AM |
9054 | continue; |
9055 | ||
ba761f19 AM |
9056 | if (h != NULL) |
9057 | val = h->root.u.def.value; | |
9058 | else | |
9059 | { | |
9060 | val = sym->st_value; | |
9061 | if (val != 0) | |
9062 | local_toc_syms = TRUE; | |
9063 | } | |
9064 | ||
9065 | val += rel->r_addend; | |
854b41e7 AM |
9066 | |
9067 | if (val > toc->rawsize) | |
9068 | val = toc->rawsize; | |
ba761f19 AM |
9069 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9070 | continue; | |
9071 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9072 | { | |
9073 | Elf_Internal_Rela *tocrel | |
425b145b | 9074 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9075 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9076 | ||
9077 | switch (r_type) | |
9078 | { | |
9079 | case R_PPC64_TOC16_HA: | |
9080 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9081 | break; | |
9082 | ||
9083 | case R_PPC64_TOC16_LO_DS: | |
9084 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9085 | break; | |
9086 | ||
9087 | default: | |
28942f62 AM |
9088 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9089 | ppc_howto_init (); | |
b140b010 | 9090 | info->callbacks->einfo |
695344c0 | 9091 | /* xgettext:c-format */ |
174d0a74 | 9092 | (_("%H: %s references " |
b140b010 AM |
9093 | "optimized away TOC entry\n"), |
9094 | ibfd, sec, rel->r_offset, | |
9095 | ppc64_elf_howto_table[r_type]->name); | |
9096 | bfd_set_error (bfd_error_bad_value); | |
9097 | goto error_ret; | |
ba761f19 AM |
9098 | } |
9099 | rel->r_addend = tocrel->r_addend; | |
9100 | elf_section_data (sec)->relocs = relstart; | |
9101 | continue; | |
9102 | } | |
9103 | ||
9104 | if (h != NULL || sym->st_value != 0) | |
9105 | continue; | |
854b41e7 AM |
9106 | |
9107 | rel->r_addend -= skip[val >> 3]; | |
9108 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9109 | } |
854b41e7 AM |
9110 | |
9111 | if (elf_section_data (sec)->relocs != relstart) | |
9112 | free (relstart); | |
c5614fa4 AM |
9113 | } |
9114 | ||
9115 | /* We shouldn't have local or global symbols defined in the TOC, | |
9116 | but handle them anyway. */ | |
df22d223 AM |
9117 | if (local_syms != NULL) |
9118 | for (sym = local_syms; | |
9119 | sym < local_syms + symtab_hdr->sh_info; | |
9120 | ++sym) | |
9121 | if (sym->st_value != 0 | |
9122 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9123 | { | |
9124 | unsigned long i; | |
854b41e7 | 9125 | |
df22d223 AM |
9126 | if (sym->st_value > toc->rawsize) |
9127 | i = toc->rawsize >> 3; | |
9128 | else | |
9129 | i = sym->st_value >> 3; | |
854b41e7 | 9130 | |
df22d223 AM |
9131 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9132 | { | |
9133 | if (local_toc_syms) | |
4eca0228 | 9134 | _bfd_error_handler |
df22d223 AM |
9135 | (_("%s defined on removed toc entry"), |
9136 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9137 | do | |
9138 | ++i; | |
9139 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9140 | sym->st_value = (bfd_vma) i << 3; | |
9141 | } | |
d62b3684 | 9142 | |
df22d223 AM |
9143 | sym->st_value -= skip[i]; |
9144 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9145 | } | |
c5614fa4 | 9146 | |
854b41e7 | 9147 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9148 | if (toc_inf.global_toc_syms) |
9149 | { | |
9150 | toc_inf.toc = toc; | |
9151 | toc_inf.skip = skip; | |
9152 | toc_inf.global_toc_syms = FALSE; | |
9153 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9154 | &toc_inf); | |
9155 | } | |
854b41e7 AM |
9156 | |
9157 | if (toc->reloc_count != 0) | |
9158 | { | |
d4730f92 | 9159 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9160 | Elf_Internal_Rela *wrel; |
9161 | bfd_size_type sz; | |
9162 | ||
854b41e7 | 9163 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9164 | if (toc_relocs == NULL) |
9165 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9166 | info->keep_memory); | |
9167 | if (toc_relocs == NULL) | |
9168 | goto error_ret; | |
9169 | ||
425b145b AM |
9170 | wrel = toc_relocs; |
9171 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9172 | if ((skip[rel->r_offset >> 3] |
9173 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9174 | { |
9175 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9176 | wrel->r_info = rel->r_info; | |
9177 | wrel->r_addend = rel->r_addend; | |
9178 | ++wrel; | |
9179 | } | |
9180 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9181 | &local_syms, NULL, NULL)) | |
9182 | goto error_ret; | |
9183 | ||
425b145b AM |
9184 | elf_section_data (toc)->relocs = toc_relocs; |
9185 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9186 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9187 | sz = rel_hdr->sh_entsize; | |
9188 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9189 | } |
c5614fa4 | 9190 | } |
c9594989 | 9191 | else if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9192 | free (toc_relocs); |
c5614fa4 AM |
9193 | |
9194 | if (local_syms != NULL | |
9195 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9196 | { | |
9197 | if (!info->keep_memory) | |
9198 | free (local_syms); | |
9199 | else | |
9200 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9201 | } | |
9202 | free (skip); | |
9203 | } | |
9204 | ||
066f4018 | 9205 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9206 | a GOT relative or PC relative access, possibly reducing the |
9207 | number of GOT entries. */ | |
066f4018 AM |
9208 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9209 | { | |
9210 | asection *sec; | |
9211 | Elf_Internal_Shdr *symtab_hdr; | |
9212 | Elf_Internal_Sym *local_syms; | |
9213 | Elf_Internal_Rela *relstart, *rel; | |
9214 | bfd_vma got; | |
9215 | ||
9216 | if (!is_ppc64_elf (ibfd)) | |
9217 | continue; | |
9218 | ||
903b777d | 9219 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9220 | continue; |
9221 | ||
9222 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9223 | got = 0; |
9224 | if (sec != NULL) | |
9225 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9226 | |
9227 | local_syms = NULL; | |
9228 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9229 | ||
9230 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9231 | { | |
9232 | if (sec->reloc_count == 0 | |
903b777d | 9233 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9234 | || discarded_section (sec)) |
9235 | continue; | |
9236 | ||
9237 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9238 | info->keep_memory); | |
9239 | if (relstart == NULL) | |
9240 | { | |
9241 | got_error_ret: | |
c9594989 | 9242 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
066f4018 AM |
9243 | free (local_syms); |
9244 | if (sec != NULL | |
066f4018 AM |
9245 | && elf_section_data (sec)->relocs != relstart) |
9246 | free (relstart); | |
9247 | return FALSE; | |
9248 | } | |
9249 | ||
9250 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9251 | { | |
9252 | enum elf_ppc64_reloc_type r_type; | |
9253 | unsigned long r_symndx; | |
9254 | Elf_Internal_Sym *sym; | |
9255 | asection *sym_sec; | |
9256 | struct elf_link_hash_entry *h; | |
9257 | struct got_entry *ent; | |
133a1f60 | 9258 | bfd_vma val, pc; |
4a421c53 | 9259 | unsigned char buf[8]; |
066f4018 | 9260 | unsigned int insn; |
903b777d | 9261 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9262 | |
9263 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9264 | switch (r_type) |
9265 | { | |
9266 | default: | |
9267 | insn_check = no_check; | |
9268 | break; | |
9269 | ||
9270 | case R_PPC64_PLT16_HA: | |
9271 | case R_PPC64_GOT_TLSLD16_HA: | |
9272 | case R_PPC64_GOT_TLSGD16_HA: | |
9273 | case R_PPC64_GOT_TPREL16_HA: | |
9274 | case R_PPC64_GOT_DTPREL16_HA: | |
9275 | case R_PPC64_GOT16_HA: | |
9276 | case R_PPC64_TOC16_HA: | |
9277 | insn_check = check_ha; | |
9278 | break; | |
9279 | ||
9280 | case R_PPC64_PLT16_LO: | |
9281 | case R_PPC64_PLT16_LO_DS: | |
9282 | case R_PPC64_GOT_TLSLD16_LO: | |
9283 | case R_PPC64_GOT_TLSGD16_LO: | |
9284 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9285 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9286 | case R_PPC64_GOT16_LO: | |
9287 | case R_PPC64_GOT16_LO_DS: | |
9288 | case R_PPC64_TOC16_LO: | |
9289 | case R_PPC64_TOC16_LO_DS: | |
9290 | insn_check = check_lo; | |
9291 | break; | |
9292 | } | |
9293 | ||
9294 | if (insn_check != no_check) | |
9295 | { | |
9296 | bfd_vma off = rel->r_offset & ~3; | |
9297 | ||
9298 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9299 | goto got_error_ret; | |
9300 | ||
9301 | insn = bfd_get_32 (ibfd, buf); | |
9302 | if (insn_check == check_lo | |
9303 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9304 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9305 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9306 | { | |
9307 | char str[12]; | |
9308 | ||
9309 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9310 | sprintf (str, "%#08x", insn); | |
9311 | info->callbacks->einfo | |
9312 | /* xgettext:c-format */ | |
9313 | (_("%H: got/toc optimization is not supported for" | |
9314 | " %s instruction\n"), | |
9315 | ibfd, sec, rel->r_offset & ~3, str); | |
9316 | continue; | |
9317 | } | |
9318 | } | |
9319 | ||
066f4018 AM |
9320 | switch (r_type) |
9321 | { | |
bb22a418 AM |
9322 | /* Note that we don't delete GOT entries for |
9323 | R_PPC64_GOT16_DS since we'd need a lot more | |
9324 | analysis. For starters, the preliminary layout is | |
9325 | before the GOT, PLT, dynamic sections and stubs are | |
9326 | laid out. Then we'd need to allow for changes in | |
9327 | distance between sections caused by alignment. */ | |
066f4018 AM |
9328 | default: |
9329 | continue; | |
9330 | ||
066f4018 AM |
9331 | case R_PPC64_GOT16_HA: |
9332 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9333 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9334 | break; |
9335 | } | |
9336 | ||
9337 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9338 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9339 | r_symndx, ibfd)) | |
9340 | goto got_error_ret; | |
9341 | ||
6d5554a6 AM |
9342 | if (sym_sec == NULL |
9343 | || sym_sec->output_section == NULL | |
9344 | || discarded_section (sym_sec)) | |
9345 | continue; | |
9346 | ||
06507dab AM |
9347 | if ((h ? h->type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
9348 | continue; | |
9349 | ||
066f4018 AM |
9350 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
9351 | continue; | |
9352 | ||
9353 | if (h != NULL) | |
9354 | val = h->root.u.def.value; | |
9355 | else | |
9356 | val = sym->st_value; | |
133a1f60 | 9357 | val += rel->r_addend; |
066f4018 AM |
9358 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9359 | ||
bb22a418 AM |
9360 | /* Fudge factor to allow for the fact that the preliminary layout |
9361 | isn't exact. Reduce limits by this factor. */ | |
9362 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9363 | ||
066f4018 AM |
9364 | switch (r_type) |
9365 | { | |
9366 | default: | |
9367 | continue; | |
9368 | ||
066f4018 | 9369 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9370 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9371 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9372 | continue; |
9373 | ||
9374 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9375 | rel->r_offset & ~3, 4)) | |
9376 | goto got_error_ret; | |
9377 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9378 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9379 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9380 | continue; | |
9381 | break; | |
9382 | ||
9383 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9384 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9385 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9386 | continue; |
9387 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9388 | rel->r_offset & ~3, 4)) | |
9389 | goto got_error_ret; | |
9390 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9391 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9392 | continue; |
9393 | break; | |
4a421c53 AM |
9394 | |
9395 | case R_PPC64_GOT_PCREL34: | |
9396 | pc = rel->r_offset; | |
9397 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9398 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9399 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9400 | continue; |
9401 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9402 | rel->r_offset & ~3, 8)) | |
9403 | goto got_error_ret; | |
9404 | insn = bfd_get_32 (ibfd, buf); | |
9405 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9406 | continue; | |
9407 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9408 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9409 | continue; |
9410 | break; | |
066f4018 | 9411 | } |
bb22a418 | 9412 | #undef LIMIT_ADJUST |
066f4018 AM |
9413 | |
9414 | if (h != NULL) | |
9415 | ent = h->got.glist; | |
9416 | else | |
9417 | { | |
9418 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9419 | ent = local_got_ents[r_symndx]; | |
9420 | } | |
9421 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9422 | if (ent->addend == rel->r_addend |
066f4018 AM |
9423 | && ent->owner == ibfd |
9424 | && ent->tls_type == 0) | |
9425 | break; | |
9426 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9427 | ent->got.refcount -= 1; | |
9428 | } | |
9429 | ||
9430 | if (elf_section_data (sec)->relocs != relstart) | |
9431 | free (relstart); | |
9432 | } | |
9433 | ||
9434 | if (local_syms != NULL | |
9435 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9436 | { | |
9437 | if (!info->keep_memory) | |
9438 | free (local_syms); | |
9439 | else | |
9440 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9441 | } | |
9442 | } | |
9443 | ||
c5614fa4 AM |
9444 | return TRUE; |
9445 | } | |
9446 | ||
1bbe0902 AM |
9447 | /* Return true iff input section I references the TOC using |
9448 | instructions limited to +/-32k offsets. */ | |
9449 | ||
9450 | bfd_boolean | |
9451 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9452 | { | |
9453 | return (is_ppc64_elf (i->owner) | |
9454 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9455 | } | |
9456 | ||
927be08e AM |
9457 | /* Allocate space for one GOT entry. */ |
9458 | ||
9459 | static void | |
9460 | allocate_got (struct elf_link_hash_entry *h, | |
9461 | struct bfd_link_info *info, | |
9462 | struct got_entry *gent) | |
9463 | { | |
9464 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ed7007c1 | 9465 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
927be08e AM |
9466 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) |
9467 | ? 16 : 8); | |
9468 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9469 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9470 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9471 | ||
9472 | gent->got.offset = got->size; | |
9473 | got->size += entsize; | |
9474 | ||
19e08130 | 9475 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9476 | { |
33e44f2e | 9477 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9478 | htab->got_reli_size += rentsize; |
927be08e | 9479 | } |
f15d0b54 | 9480 | else if (((bfd_link_pic (info) |
f749f26e | 9481 | && !(gent->tls_type != 0 |
f15d0b54 AM |
9482 | && bfd_link_executable (info) |
9483 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9484 | || (htab->elf.dynamic_sections_created |
9485 | && h->dynindx != -1 | |
9486 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9487 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9488 | { |
19e08130 | 9489 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9490 | relgot->size += rentsize; |
927be08e AM |
9491 | } |
9492 | } | |
9493 | ||
7865406b AM |
9494 | /* This function merges got entries in the same toc group. */ |
9495 | ||
9496 | static void | |
9497 | merge_got_entries (struct got_entry **pent) | |
9498 | { | |
9499 | struct got_entry *ent, *ent2; | |
9500 | ||
9501 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9502 | if (!ent->is_indirect) | |
9503 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9504 | if (!ent2->is_indirect | |
9505 | && ent2->addend == ent->addend | |
9506 | && ent2->tls_type == ent->tls_type | |
9507 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9508 | { | |
9509 | ent2->is_indirect = TRUE; | |
9510 | ent2->got.ent = ent; | |
9511 | } | |
9512 | } | |
9513 | ||
46434633 | 9514 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9515 | |
9516 | static bfd_boolean | |
46434633 AM |
9517 | ensure_undef_dynamic (struct bfd_link_info *info, |
9518 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9519 | { |
9520 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9521 | ||
9522 | if (htab->dynamic_sections_created | |
46434633 AM |
9523 | && ((info->dynamic_undefined_weak != 0 |
9524 | && h->root.type == bfd_link_hash_undefweak) | |
9525 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9526 | && h->dynindx == -1 |
9527 | && !h->forced_local | |
9528 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9529 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9530 | return TRUE; | |
9531 | } | |
9532 | ||
65f38f15 AM |
9533 | /* Allocate space in .plt, .got and associated reloc sections for |
9534 | dynamic relocs. */ | |
5bd4f169 | 9535 | |
b34976b6 | 9536 | static bfd_boolean |
4ce794b7 | 9537 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9538 | { |
65f38f15 AM |
9539 | struct bfd_link_info *info; |
9540 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9541 | asection *s; |
65f38f15 | 9542 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9543 | struct got_entry **pgent, *gent; |
5bd4f169 | 9544 | |
e92d460e | 9545 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9546 | return TRUE; |
5bd4f169 | 9547 | |
65f38f15 AM |
9548 | info = (struct bfd_link_info *) inf; |
9549 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9550 | if (htab == NULL) |
9551 | return FALSE; | |
5bd4f169 | 9552 | |
ed7007c1 | 9553 | eh = ppc_elf_hash_entry (h); |
951fd09b AM |
9554 | /* Run through the TLS GD got entries first if we're changing them |
9555 | to TPREL. */ | |
b00a0a86 | 9556 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9557 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9558 | if (gent->got.refcount > 0 | |
9559 | && (gent->tls_type & TLS_GD) != 0) | |
9560 | { | |
9561 | /* This was a GD entry that has been converted to TPREL. If | |
9562 | there happens to be a TPREL entry we can use that one. */ | |
9563 | struct got_entry *ent; | |
9564 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9565 | if (ent->got.refcount > 0 | |
9566 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9567 | && ent->addend == gent->addend |
9568 | && ent->owner == gent->owner) | |
951fd09b AM |
9569 | { |
9570 | gent->got.refcount = 0; | |
9571 | break; | |
9572 | } | |
9573 | ||
9574 | /* If not, then we'll be using our own TPREL entry. */ | |
9575 | if (gent->got.refcount != 0) | |
9576 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9577 | } | |
9578 | ||
7865406b AM |
9579 | /* Remove any list entry that won't generate a word in the GOT before |
9580 | we call merge_got_entries. Otherwise we risk merging to empty | |
9581 | entries. */ | |
0b8bcf0d AM |
9582 | pgent = &h->got.glist; |
9583 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9584 | if (gent->got.refcount > 0) |
7865406b AM |
9585 | { |
9586 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9587 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9588 | { |
9589 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9590 | *pgent = gent->next; | |
9591 | } | |
9592 | else | |
9593 | pgent = &gent->next; | |
9594 | } | |
9595 | else | |
9596 | *pgent = gent->next; | |
9597 | ||
9598 | if (!htab->do_multi_toc) | |
9599 | merge_got_entries (&h->got.glist); | |
9600 | ||
9601 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9602 | if (!gent->is_indirect) | |
411e1bfb | 9603 | { |
ec73ddcd AM |
9604 | /* Ensure we catch all the cases where this symbol should |
9605 | be made dynamic. */ | |
46434633 | 9606 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9607 | return FALSE; |
65f38f15 | 9608 | |
0c8d6e5c | 9609 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9610 | abort (); |
0ffa91dd | 9611 | |
927be08e | 9612 | allocate_got (h, info, gent); |
411e1bfb | 9613 | } |
65f38f15 | 9614 | |
954b63d4 AM |
9615 | /* If no dynamic sections we can't have dynamic relocs, except for |
9616 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9617 | if (!htab->elf.dynamic_sections_created |
9618 | && h->type != STT_GNU_IFUNC) | |
190eb1dd | 9619 | h->dyn_relocs = NULL; |
8a2058b5 | 9620 | |
529fe20e AM |
9621 | /* Discard relocs on undefined symbols that must be local. */ |
9622 | else if (h->root.type == bfd_link_hash_undefined | |
9623 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
190eb1dd | 9624 | h->dyn_relocs = NULL; |
529fe20e | 9625 | |
954b63d4 AM |
9626 | /* Also discard relocs on undefined weak syms with non-default |
9627 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9628 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 9629 | h->dyn_relocs = NULL; |
954b63d4 | 9630 | |
190eb1dd | 9631 | if (h->dyn_relocs != NULL) |
65f38f15 | 9632 | { |
8a2058b5 AM |
9633 | struct elf_dyn_relocs *p, **pp; |
9634 | ||
57e7d118 AM |
9635 | /* In the shared -Bsymbolic case, discard space allocated for |
9636 | dynamic pc-relative relocs against symbols which turn out to | |
9637 | be defined in regular objects. For the normal shared case, | |
9638 | discard space for relocs that have become local due to symbol | |
9639 | visibility changes. */ | |
57e7d118 | 9640 | if (bfd_link_pic (info)) |
65f38f15 | 9641 | { |
57e7d118 AM |
9642 | /* Relocs that use pc_count are those that appear on a call |
9643 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9644 | can be generated via assembly. We want calls to | |
9645 | protected symbols to resolve directly to the function | |
9646 | rather than going via the plt. If people want function | |
9647 | pointer comparisons to work as expected then they should | |
9648 | avoid writing weird assembly. */ | |
9649 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9650 | { | |
190eb1dd | 9651 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
57e7d118 AM |
9652 | { |
9653 | p->count -= p->pc_count; | |
9654 | p->pc_count = 0; | |
9655 | if (p->count == 0) | |
9656 | *pp = p->next; | |
9657 | else | |
9658 | pp = &p->next; | |
9659 | } | |
9660 | } | |
65f38f15 | 9661 | |
190eb1dd | 9662 | if (h->dyn_relocs != NULL) |
5bd4f169 | 9663 | { |
ec73ddcd AM |
9664 | /* Ensure we catch all the cases where this symbol |
9665 | should be made dynamic. */ | |
46434633 | 9666 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9667 | return FALSE; |
5bd4f169 | 9668 | } |
65f38f15 | 9669 | } |
ec73ddcd AM |
9670 | |
9671 | /* For a fixed position executable, discard space for | |
9672 | relocs against symbols which are not dynamic. */ | |
9673 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9674 | { |
529fe20e AM |
9675 | if (h->dynamic_adjusted |
9676 | && !h->def_regular | |
9677 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9678 | { |
ec73ddcd AM |
9679 | /* Ensure we catch all the cases where this symbol |
9680 | should be made dynamic. */ | |
46434633 | 9681 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9682 | return FALSE; |
dfbb6ac9 | 9683 | |
ec73ddcd | 9684 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 | 9685 | if (h->dynindx == -1) |
190eb1dd | 9686 | h->dyn_relocs = NULL; |
f0158f44 AM |
9687 | } |
9688 | else | |
190eb1dd | 9689 | h->dyn_relocs = NULL; |
57e7d118 AM |
9690 | } |
9691 | ||
9692 | /* Finally, allocate space. */ | |
190eb1dd | 9693 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
57e7d118 AM |
9694 | { |
9695 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9696 | if (eh->elf.type == STT_GNU_IFUNC) | |
9697 | sreloc = htab->elf.irelplt; | |
9698 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9699 | } |
65f38f15 | 9700 | } |
57e7d118 | 9701 | |
2d7ad24e AM |
9702 | /* We might need a PLT entry when the symbol |
9703 | a) is dynamic, or | |
9704 | b) is an ifunc, or | |
9705 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9706 | d) has plt16 relocs and we are linking statically. */ | |
9707 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9708 | || h->type == STT_GNU_IFUNC | |
9709 | || (h->needs_plt && h->dynamic_adjusted) | |
9710 | || (h->needs_plt | |
9711 | && h->def_regular | |
9712 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9713 | && !htab->can_convert_all_inline_plt |
ed7007c1 | 9714 | && (ppc_elf_hash_entry (h)->tls_mask |
2d7ad24e | 9715 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) |
65f38f15 | 9716 | { |
57e7d118 AM |
9717 | struct plt_entry *pent; |
9718 | bfd_boolean doneone = FALSE; | |
9719 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9720 | if (pent->plt.refcount > 0) | |
9721 | { | |
9722 | if (!htab->elf.dynamic_sections_created | |
9723 | || h->dynindx == -1) | |
9724 | { | |
2d7ad24e AM |
9725 | if (h->type == STT_GNU_IFUNC) |
9726 | { | |
9727 | s = htab->elf.iplt; | |
9728 | pent->plt.offset = s->size; | |
9729 | s->size += PLT_ENTRY_SIZE (htab); | |
9730 | s = htab->elf.irelplt; | |
9731 | } | |
9732 | else | |
9733 | { | |
9734 | s = htab->pltlocal; | |
9735 | pent->plt.offset = s->size; | |
9736 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9737 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9738 | } | |
57e7d118 AM |
9739 | } |
9740 | else | |
9741 | { | |
9742 | /* If this is the first .plt entry, make room for the special | |
9743 | first entry. */ | |
9744 | s = htab->elf.splt; | |
9745 | if (s->size == 0) | |
9746 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9747 | |
57e7d118 | 9748 | pent->plt.offset = s->size; |
65f38f15 | 9749 | |
57e7d118 AM |
9750 | /* Make room for this entry. */ |
9751 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9752 | |
57e7d118 AM |
9753 | /* Make room for the .glink code. */ |
9754 | s = htab->glink; | |
9755 | if (s->size == 0) | |
9e390558 | 9756 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9757 | if (htab->opd_abi) |
9758 | { | |
9759 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9760 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9761 | s->size += 4; |
9762 | s->size += 2*4; | |
9763 | } | |
9764 | else | |
9765 | s->size += 4; | |
65f38f15 | 9766 | |
57e7d118 AM |
9767 | /* We also need to make an entry in the .rela.plt section. */ |
9768 | s = htab->elf.srelplt; | |
9769 | } | |
2d7ad24e AM |
9770 | if (s != NULL) |
9771 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9772 | doneone = TRUE; |
9773 | } | |
9774 | else | |
9775 | pent->plt.offset = (bfd_vma) -1; | |
9776 | if (!doneone) | |
9777 | { | |
9778 | h->plt.plist = NULL; | |
9779 | h->needs_plt = 0; | |
9780 | } | |
65f38f15 | 9781 | } |
57e7d118 | 9782 | else |
65f38f15 | 9783 | { |
57e7d118 AM |
9784 | h->plt.plist = NULL; |
9785 | h->needs_plt = 0; | |
65f38f15 AM |
9786 | } |
9787 | ||
b34976b6 | 9788 | return TRUE; |
65f38f15 AM |
9789 | } |
9790 | ||
9e390558 AM |
9791 | #define PPC_LO(v) ((v) & 0xffff) |
9792 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9793 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9794 | #define D34(v) \ |
9795 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9796 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9797 | |
a345bc8d AM |
9798 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9799 | to set up space for global entry stubs. These are put in glink, | |
9800 | after the branch table. */ | |
65f38f15 | 9801 | |
b34976b6 | 9802 | static bfd_boolean |
a345bc8d | 9803 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9804 | { |
a345bc8d AM |
9805 | struct bfd_link_info *info; |
9806 | struct ppc_link_hash_table *htab; | |
9807 | struct plt_entry *pent; | |
9e390558 | 9808 | asection *s, *plt; |
65f38f15 | 9809 | |
a345bc8d AM |
9810 | if (h->root.type == bfd_link_hash_indirect) |
9811 | return TRUE; | |
65f38f15 | 9812 | |
a345bc8d AM |
9813 | if (!h->pointer_equality_needed) |
9814 | return TRUE; | |
65f38f15 | 9815 | |
a345bc8d AM |
9816 | if (h->def_regular) |
9817 | return TRUE; | |
65f38f15 | 9818 | |
a345bc8d AM |
9819 | info = inf; |
9820 | htab = ppc_hash_table (info); | |
9821 | if (htab == NULL) | |
9822 | return FALSE; | |
9823 | ||
9e390558 AM |
9824 | s = htab->global_entry; |
9825 | plt = htab->elf.splt; | |
a345bc8d AM |
9826 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9827 | if (pent->plt.offset != (bfd_vma) -1 | |
9828 | && pent->addend == 0) | |
9829 | { | |
afe397ea AM |
9830 | /* For ELFv2, if this symbol is not defined in a regular file |
9831 | and we are not generating a shared library or pie, then we | |
9832 | need to define the symbol in the executable on a call stub. | |
9833 | This is to avoid text relocations. */ | |
9e390558 AM |
9834 | bfd_vma off, stub_align, stub_off, stub_size; |
9835 | unsigned int align_power; | |
9836 | ||
9837 | stub_size = 16; | |
9838 | stub_off = s->size; | |
9839 | if (htab->params->plt_stub_align >= 0) | |
9840 | align_power = htab->params->plt_stub_align; | |
9841 | else | |
9842 | align_power = -htab->params->plt_stub_align; | |
9843 | /* Setting section alignment is delayed until we know it is | |
9844 | non-empty. Otherwise the .text output section will be | |
9845 | aligned at least to plt_stub_align even when no global | |
9846 | entry stubs are needed. */ | |
9847 | if (s->alignment_power < align_power) | |
9848 | s->alignment_power = align_power; | |
9849 | stub_align = (bfd_vma) 1 << align_power; | |
9850 | if (htab->params->plt_stub_align >= 0 | |
9851 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9852 | - (stub_off & -stub_align)) | |
9853 | > ((stub_size - 1) & -stub_align))) | |
9854 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9855 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9856 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9857 | /* Note that for --plt-stub-align negative we have a possible | |
9858 | dependency between stub offset and size. Break that | |
9859 | dependency by assuming the max stub size when calculating | |
9860 | the stub offset. */ | |
9861 | if (PPC_HA (off) == 0) | |
9862 | stub_size -= 4; | |
8a2058b5 | 9863 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9864 | h->root.u.def.section = s; |
9e390558 AM |
9865 | h->root.u.def.value = stub_off; |
9866 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9867 | break; |
9868 | } | |
9869 | return TRUE; | |
9870 | } | |
9871 | ||
65f38f15 AM |
9872 | /* Set the sizes of the dynamic sections. */ |
9873 | ||
b34976b6 | 9874 | static bfd_boolean |
ee67d69a | 9875 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9876 | struct bfd_link_info *info) |
65f38f15 AM |
9877 | { |
9878 | struct ppc_link_hash_table *htab; | |
9879 | bfd *dynobj; | |
9880 | asection *s; | |
b34976b6 | 9881 | bfd_boolean relocs; |
65f38f15 | 9882 | bfd *ibfd; |
7865406b | 9883 | struct got_entry *first_tlsld; |
65f38f15 AM |
9884 | |
9885 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9886 | if (htab == NULL) |
9887 | return FALSE; | |
9888 | ||
65f38f15 AM |
9889 | dynobj = htab->elf.dynobj; |
9890 | if (dynobj == NULL) | |
9891 | abort (); | |
9892 | ||
9893 | if (htab->elf.dynamic_sections_created) | |
9894 | { | |
9895 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9896 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9897 | { |
3d4d4302 | 9898 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9899 | if (s == NULL) |
9900 | abort (); | |
eea6121a | 9901 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9902 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9903 | } | |
9904 | } | |
9905 | ||
9906 | /* Set up .got offsets for local syms, and space for local dynamic | |
9907 | relocs. */ | |
c72f2fb2 | 9908 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9909 | { |
411e1bfb AM |
9910 | struct got_entry **lgot_ents; |
9911 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9912 | struct plt_entry **local_plt; |
9913 | struct plt_entry **end_local_plt; | |
f961d9dd | 9914 | unsigned char *lgot_masks; |
65f38f15 AM |
9915 | bfd_size_type locsymcount; |
9916 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9917 | |
0c8d6e5c | 9918 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9919 | continue; |
9920 | ||
9921 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9922 | { | |
19e08130 | 9923 | struct ppc_dyn_relocs *p; |
65f38f15 | 9924 | |
6edfbbad | 9925 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9926 | { |
ec338859 AM |
9927 | if (!bfd_is_abs_section (p->sec) |
9928 | && bfd_is_abs_section (p->sec->output_section)) | |
9929 | { | |
9930 | /* Input section has been discarded, either because | |
9931 | it is a copy of a linkonce section or due to | |
9932 | linker script /DISCARD/, so we'll be discarding | |
9933 | the relocs too. */ | |
9934 | } | |
248866a8 | 9935 | else if (p->count != 0) |
ec338859 | 9936 | { |
19e08130 AM |
9937 | asection *srel = elf_section_data (p->sec)->sreloc; |
9938 | if (p->ifunc) | |
33e44f2e | 9939 | srel = htab->elf.irelplt; |
eea6121a | 9940 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9941 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9942 | info->flags |= DF_TEXTREL; | |
ec338859 | 9943 | } |
65f38f15 AM |
9944 | } |
9945 | } | |
9946 | ||
411e1bfb AM |
9947 | lgot_ents = elf_local_got_ents (ibfd); |
9948 | if (!lgot_ents) | |
65f38f15 AM |
9949 | continue; |
9950 | ||
0ffa91dd | 9951 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9952 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9953 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9954 | local_plt = (struct plt_entry **) end_lgot_ents; |
9955 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9956 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9957 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9958 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9959 | { |
0b8bcf0d | 9960 | struct got_entry **pent, *ent; |
411e1bfb | 9961 | |
0b8bcf0d AM |
9962 | pent = lgot_ents; |
9963 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9964 | if (ent->got.refcount > 0) |
9965 | { | |
e7b938ca | 9966 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9967 | { |
927be08e | 9968 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9969 | *pent = ent->next; |
411e1bfb AM |
9970 | } |
9971 | else | |
9972 | { | |
19e08130 AM |
9973 | unsigned int ent_size = 8; |
9974 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9975 | ||
eea6121a | 9976 | ent->got.offset = s->size; |
e7b938ca | 9977 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9978 | { |
19e08130 AM |
9979 | ent_size *= 2; |
9980 | rel_size *= 2; | |
9981 | } | |
9982 | s->size += ent_size; | |
37da22e5 | 9983 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 9984 | { |
33e44f2e | 9985 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9986 | htab->got_reli_size += rel_size; |
9987 | } | |
93370e8e AM |
9988 | else if (bfd_link_pic (info) |
9989 | && !(ent->tls_type != 0 | |
9990 | && bfd_link_executable (info))) | |
19e08130 AM |
9991 | { |
9992 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9993 | srel->size += rel_size; | |
927be08e | 9994 | } |
0b8bcf0d | 9995 | pent = &ent->next; |
411e1bfb AM |
9996 | } |
9997 | } | |
9998 | else | |
0b8bcf0d | 9999 | *pent = ent->next; |
65f38f15 | 10000 | } |
e054468f | 10001 | |
2d7ad24e AM |
10002 | /* Allocate space for plt calls to local syms. */ |
10003 | lgot_masks = (unsigned char *) end_local_plt; | |
10004 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10005 | { |
10006 | struct plt_entry *ent; | |
10007 | ||
10008 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10009 | if (ent->plt.refcount > 0) | |
10010 | { | |
2d7ad24e AM |
10011 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10012 | { | |
10013 | s = htab->elf.iplt; | |
10014 | ent->plt.offset = s->size; | |
10015 | s->size += PLT_ENTRY_SIZE (htab); | |
10016 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10017 | } | |
3e04d765 AM |
10018 | else if (htab->can_convert_all_inline_plt |
10019 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10020 | ent->plt.offset = (bfd_vma) -1; |
10021 | else | |
10022 | { | |
10023 | s = htab->pltlocal; | |
10024 | ent->plt.offset = s->size; | |
10025 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10026 | if (bfd_link_pic (info)) | |
10027 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10028 | } | |
e054468f AM |
10029 | } |
10030 | else | |
10031 | ent->plt.offset = (bfd_vma) -1; | |
10032 | } | |
65f38f15 AM |
10033 | } |
10034 | ||
10035 | /* Allocate global sym .plt and .got entries, and space for global | |
10036 | sym dynamic relocs. */ | |
4ce794b7 | 10037 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10038 | |
0e1862bb | 10039 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10040 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10041 | |
7865406b | 10042 | first_tlsld = NULL; |
c72f2fb2 | 10043 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10044 | { |
7865406b AM |
10045 | struct got_entry *ent; |
10046 | ||
0c8d6e5c | 10047 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10048 | continue; |
10049 | ||
7865406b AM |
10050 | ent = ppc64_tlsld_got (ibfd); |
10051 | if (ent->got.refcount > 0) | |
102890f0 | 10052 | { |
7865406b | 10053 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10054 | { |
7865406b AM |
10055 | ent->is_indirect = TRUE; |
10056 | ent->got.ent = first_tlsld; | |
10057 | } | |
10058 | else | |
10059 | { | |
10060 | if (first_tlsld == NULL) | |
10061 | first_tlsld = ent; | |
10062 | s = ppc64_elf_tdata (ibfd)->got; | |
10063 | ent->got.offset = s->size; | |
10064 | ent->owner = ibfd; | |
10065 | s->size += 16; | |
f749f26e | 10066 | if (bfd_link_dll (info)) |
7865406b AM |
10067 | { |
10068 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10069 | srel->size += sizeof (Elf64_External_Rela); | |
10070 | } | |
102890f0 AM |
10071 | } |
10072 | } | |
10073 | else | |
7865406b | 10074 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10075 | } |
10076 | ||
65f38f15 AM |
10077 | /* We now have determined the sizes of the various dynamic sections. |
10078 | Allocate memory for them. */ | |
b34976b6 | 10079 | relocs = FALSE; |
65f38f15 AM |
10080 | for (s = dynobj->sections; s != NULL; s = s->next) |
10081 | { | |
10082 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10083 | continue; | |
10084 | ||
4ce794b7 | 10085 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10086 | /* These haven't been allocated yet; don't strip. */ |
10087 | continue; | |
33e44f2e AM |
10088 | else if (s == htab->elf.sgot |
10089 | || s == htab->elf.splt | |
10090 | || s == htab->elf.iplt | |
2d7ad24e | 10091 | || s == htab->pltlocal |
c456f082 | 10092 | || s == htab->glink |
9e390558 | 10093 | || s == htab->global_entry |
5474d94f AM |
10094 | || s == htab->elf.sdynbss |
10095 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10096 | { |
10097 | /* Strip this section if we don't need it; see the | |
10098 | comment below. */ | |
5bd4f169 | 10099 | } |
58d180e8 AM |
10100 | else if (s == htab->glink_eh_frame) |
10101 | { | |
10102 | if (!bfd_is_abs_section (s->output_section)) | |
10103 | /* Not sized yet. */ | |
10104 | continue; | |
10105 | } | |
70cc837d | 10106 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10107 | { |
c456f082 | 10108 | if (s->size != 0) |
5bd4f169 | 10109 | { |
33e44f2e | 10110 | if (s != htab->elf.srelplt) |
b34976b6 | 10111 | relocs = TRUE; |
5bd4f169 AM |
10112 | |
10113 | /* We use the reloc_count field as a counter if we need | |
10114 | to copy relocs into the output file. */ | |
10115 | s->reloc_count = 0; | |
10116 | } | |
10117 | } | |
65f38f15 | 10118 | else |
5bd4f169 AM |
10119 | { |
10120 | /* It's not one of our sections, so don't allocate space. */ | |
10121 | continue; | |
10122 | } | |
10123 | ||
eea6121a | 10124 | if (s->size == 0) |
5bd4f169 | 10125 | { |
c456f082 AM |
10126 | /* If we don't need this section, strip it from the |
10127 | output file. This is mostly to handle .rela.bss and | |
10128 | .rela.plt. We must create both sections in | |
10129 | create_dynamic_sections, because they must be created | |
10130 | before the linker maps input sections to output | |
10131 | sections. The linker does that before | |
10132 | adjust_dynamic_symbol is called, and it is that | |
10133 | function which decides whether anything needs to go | |
10134 | into these sections. */ | |
8423293d | 10135 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10136 | continue; |
10137 | } | |
10138 | ||
06bcf541 AM |
10139 | if (bfd_is_abs_section (s->output_section)) |
10140 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10141 | s->name); | |
10142 | ||
c456f082 | 10143 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10144 | continue; |
10145 | ||
65f38f15 AM |
10146 | /* Allocate memory for the section contents. We use bfd_zalloc |
10147 | here in case unused entries are not reclaimed before the | |
10148 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10149 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10150 | sections instead of garbage. | |
10151 | We also rely on the section contents being zero when writing | |
5474d94f | 10152 | the GOT and .dynrelro. */ |
eea6121a | 10153 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10154 | if (s->contents == NULL) |
b34976b6 | 10155 | return FALSE; |
5bd4f169 AM |
10156 | } |
10157 | ||
c72f2fb2 | 10158 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10159 | { |
0c8d6e5c | 10160 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10161 | continue; |
10162 | ||
e717da7e | 10163 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10164 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10165 | { |
eea6121a | 10166 | if (s->size == 0) |
8423293d | 10167 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10168 | else |
10169 | { | |
eea6121a | 10170 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10171 | if (s->contents == NULL) |
10172 | return FALSE; | |
10173 | } | |
10174 | } | |
10175 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10176 | if (s != NULL) | |
10177 | { | |
eea6121a | 10178 | if (s->size == 0) |
8423293d | 10179 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10180 | else |
10181 | { | |
eea6121a | 10182 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10183 | if (s->contents == NULL) |
10184 | return FALSE; | |
10185 | relocs = TRUE; | |
10186 | s->reloc_count = 0; | |
10187 | } | |
10188 | } | |
10189 | } | |
10190 | ||
e86ce104 | 10191 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10192 | { |
e8910a83 AM |
10193 | bfd_boolean tls_opt; |
10194 | ||
5bd4f169 AM |
10195 | /* Add some entries to the .dynamic section. We fill in the |
10196 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10197 | must add the entries now so that we get the correct size for | |
10198 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10199 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10200 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10201 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10202 | |
0e1862bb | 10203 | if (bfd_link_executable (info)) |
5bd4f169 | 10204 | { |
dc810e39 | 10205 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10206 | return FALSE; |
5bd4f169 AM |
10207 | } |
10208 | ||
33e44f2e | 10209 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10210 | { |
dc810e39 AM |
10211 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10212 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10213 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10214 | || !add_dynamic_entry (DT_JMPREL, 0) |
10215 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10216 | return FALSE; |
5bd4f169 AM |
10217 | } |
10218 | ||
ee67d69a | 10219 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10220 | { |
10221 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10222 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10223 | return FALSE; |
19397422 AM |
10224 | } |
10225 | ||
7c9cf415 | 10226 | tls_opt = (htab->params->tls_get_addr_opt |
9e7028aa AM |
10227 | && ((htab->tls_get_addr_fd != NULL |
10228 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
10229 | || (htab->tga_desc_fd != NULL | |
10230 | && htab->tga_desc_fd->elf.plt.plist != NULL))); | |
e8910a83 AM |
10231 | if (tls_opt || !htab->opd_abi) |
10232 | { | |
10233 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10234 | return FALSE; | |
10235 | } | |
a7f2871e | 10236 | |
5bd4f169 AM |
10237 | if (relocs) |
10238 | { | |
dc810e39 AM |
10239 | if (!add_dynamic_entry (DT_RELA, 0) |
10240 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10241 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10242 | return FALSE; |
5bd4f169 | 10243 | |
65f38f15 AM |
10244 | /* If any dynamic relocs apply to a read-only section, |
10245 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10246 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
10247 | elf_link_hash_traverse (&htab->elf, |
10248 | _bfd_elf_maybe_set_textrel, info); | |
5bd4f169 | 10249 | |
65f38f15 | 10250 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10251 | { |
65f38f15 | 10252 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10253 | return FALSE; |
5bd4f169 | 10254 | } |
5bd4f169 | 10255 | } |
5bd4f169 | 10256 | } |
65f38f15 | 10257 | #undef add_dynamic_entry |
5bd4f169 | 10258 | |
b34976b6 | 10259 | return TRUE; |
5bd4f169 AM |
10260 | } |
10261 | ||
a345bc8d AM |
10262 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10263 | ||
10264 | static bfd_boolean | |
10265 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10266 | { | |
10267 | if (h->plt.plist != NULL | |
10268 | && !h->def_regular | |
10269 | && !h->pointer_equality_needed) | |
10270 | return FALSE; | |
10271 | ||
10272 | return _bfd_elf_hash_symbol (h); | |
10273 | } | |
10274 | ||
721956f4 | 10275 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10276 | |
4ce794b7 AM |
10277 | static inline enum ppc_stub_type |
10278 | ppc_type_of_stub (asection *input_sec, | |
10279 | const Elf_Internal_Rela *rel, | |
10280 | struct ppc_link_hash_entry **hash, | |
e054468f | 10281 | struct plt_entry **plt_ent, |
6911b7dc AM |
10282 | bfd_vma destination, |
10283 | unsigned long local_off) | |
5bd4f169 | 10284 | { |
721956f4 AM |
10285 | struct ppc_link_hash_entry *h = *hash; |
10286 | bfd_vma location; | |
10287 | bfd_vma branch_offset; | |
10288 | bfd_vma max_branch_offset; | |
4ce794b7 | 10289 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10290 | |
721956f4 AM |
10291 | if (h != NULL) |
10292 | { | |
e054468f | 10293 | struct plt_entry *ent; |
7fe2b9a6 | 10294 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10295 | if (h->oh != NULL |
10296 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10297 | { |
10298 | fdh = ppc_follow_link (h->oh); | |
10299 | *hash = fdh; | |
10300 | } | |
8387904d | 10301 | |
e054468f AM |
10302 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10303 | if (ent->addend == rel->r_addend | |
10304 | && ent->plt.offset != (bfd_vma) -1) | |
10305 | { | |
e054468f AM |
10306 | *plt_ent = ent; |
10307 | return ppc_stub_plt_call; | |
10308 | } | |
5bd4f169 | 10309 | |
7fe2b9a6 AM |
10310 | /* Here, we know we don't have a plt entry. If we don't have a |
10311 | either a defined function descriptor or a defined entry symbol | |
10312 | in a regular object file, then it is pointless trying to make | |
10313 | any other type of stub. */ | |
854b41e7 AM |
10314 | if (!is_static_defined (&fdh->elf) |
10315 | && !is_static_defined (&h->elf)) | |
721956f4 | 10316 | return ppc_stub_none; |
5d1634d7 | 10317 | } |
e054468f AM |
10318 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10319 | { | |
10320 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10321 | struct plt_entry **local_plt = (struct plt_entry **) | |
10322 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10323 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10324 | ||
10325 | if (local_plt[r_symndx] != NULL) | |
10326 | { | |
10327 | struct plt_entry *ent; | |
10328 | ||
10329 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10330 | if (ent->addend == rel->r_addend | |
10331 | && ent->plt.offset != (bfd_vma) -1) | |
10332 | { | |
10333 | *plt_ent = ent; | |
10334 | return ppc_stub_plt_call; | |
10335 | } | |
10336 | } | |
10337 | } | |
5d1634d7 | 10338 | |
721956f4 AM |
10339 | /* Determine where the call point is. */ |
10340 | location = (input_sec->output_offset | |
10341 | + input_sec->output_section->vma | |
10342 | + rel->r_offset); | |
5d1634d7 | 10343 | |
721956f4 AM |
10344 | branch_offset = destination - location; |
10345 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10346 | |
721956f4 AM |
10347 | /* Determine if a long branch stub is needed. */ |
10348 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10349 | if (r_type == R_PPC64_REL14 |
10350 | || r_type == R_PPC64_REL14_BRTAKEN | |
10351 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10352 | max_branch_offset = 1 << 15; |
5d1634d7 | 10353 | |
6911b7dc | 10354 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10355 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10356 | is needed later. */ | |
10357 | return ppc_stub_long_branch; | |
5d1634d7 | 10358 | |
721956f4 | 10359 | return ppc_stub_none; |
5d1634d7 AM |
10360 | } |
10361 | ||
f891966f AM |
10362 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10363 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10364 | . mflr %r12 | |
10365 | . bcl 20,31,1f | |
10366 | .1: mflr %r11 | |
10367 | . mtlr %r12 | |
05d0e962 | 10368 | . lis %r12,xxx-1b@highest |
f891966f | 10369 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10370 | . sldi %r12,%r12,32 |
f891966f | 10371 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10372 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10373 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10374 | |
10375 | static bfd_byte * | |
10376 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10377 | { | |
f891966f AM |
10378 | bfd_put_32 (abfd, MFLR_R12, p); |
10379 | p += 4; | |
10380 | bfd_put_32 (abfd, BCL_20_31, p); | |
10381 | p += 4; | |
10382 | bfd_put_32 (abfd, MFLR_R11, p); | |
10383 | p += 4; | |
10384 | bfd_put_32 (abfd, MTLR_R12, p); | |
10385 | p += 4; | |
05d0e962 AM |
10386 | if (off + 0x8000 < 0x10000) |
10387 | { | |
10388 | if (load) | |
10389 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10390 | else | |
10391 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10392 | p += 4; | |
10393 | } | |
10394 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10395 | { | |
10396 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10397 | p += 4; | |
10398 | if (load) | |
10399 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10400 | else | |
10401 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10402 | p += 4; | |
10403 | } | |
10404 | else | |
10405 | { | |
10406 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10407 | { | |
10408 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10409 | p += 4; | |
10410 | } | |
10411 | else | |
10412 | { | |
10413 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10414 | p += 4; | |
10415 | if (((off >> 32) & 0xffff) != 0) | |
10416 | { | |
10417 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10418 | p += 4; | |
10419 | } | |
10420 | } | |
10421 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10422 | { | |
10423 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10424 | p += 4; | |
10425 | } | |
10426 | if (PPC_HI (off) != 0) | |
10427 | { | |
10428 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10429 | p += 4; | |
10430 | } | |
10431 | if (PPC_LO (off) != 0) | |
10432 | { | |
10433 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10434 | p += 4; | |
10435 | } | |
10436 | if (load) | |
10437 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10438 | else | |
10439 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10440 | p += 4; | |
10441 | } | |
10442 | return p; | |
10443 | } | |
10444 | ||
10445 | static unsigned int | |
10446 | size_offset (bfd_vma off) | |
10447 | { | |
10448 | unsigned int size; | |
10449 | if (off + 0x8000 < 0x10000) | |
10450 | size = 4; | |
10451 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10452 | size = 8; | |
10453 | else | |
10454 | { | |
10455 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10456 | size = 4; | |
10457 | else | |
10458 | { | |
10459 | size = 4; | |
10460 | if (((off >> 32) & 0xffff) != 0) | |
10461 | size += 4; | |
10462 | } | |
10463 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10464 | size += 4; | |
10465 | if (PPC_HI (off) != 0) | |
10466 | size += 4; | |
10467 | if (PPC_LO (off) != 0) | |
10468 | size += 4; | |
10469 | size += 4; | |
10470 | } | |
f891966f | 10471 | return size + 16; |
05d0e962 AM |
10472 | } |
10473 | ||
3d58e1fc AM |
10474 | static unsigned int |
10475 | num_relocs_for_offset (bfd_vma off) | |
10476 | { | |
10477 | unsigned int num_rel; | |
10478 | if (off + 0x8000 < 0x10000) | |
10479 | num_rel = 1; | |
10480 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10481 | num_rel = 2; | |
10482 | else | |
10483 | { | |
10484 | num_rel = 1; | |
10485 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10486 | && ((off >> 32) & 0xffff) != 0) | |
10487 | num_rel += 1; | |
10488 | if (PPC_HI (off) != 0) | |
10489 | num_rel += 1; | |
10490 | if (PPC_LO (off) != 0) | |
10491 | num_rel += 1; | |
10492 | } | |
10493 | return num_rel; | |
10494 | } | |
10495 | ||
10496 | static Elf_Internal_Rela * | |
10497 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10498 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10499 | { | |
10500 | bfd_vma relative_targ = targ - (roff - 8); | |
10501 | if (bfd_big_endian (info->output_bfd)) | |
10502 | roff += 2; | |
10503 | r->r_offset = roff; | |
10504 | r->r_addend = relative_targ + roff; | |
10505 | if (off + 0x8000 < 0x10000) | |
10506 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10507 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10508 | { | |
10509 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10510 | ++r; | |
10511 | roff += 4; | |
10512 | r->r_offset = roff; | |
10513 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10514 | r->r_addend = relative_targ + roff; | |
10515 | } | |
10516 | else | |
10517 | { | |
10518 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10519 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10520 | else | |
10521 | { | |
10522 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10523 | if (((off >> 32) & 0xffff) != 0) | |
10524 | { | |
10525 | ++r; | |
10526 | roff += 4; | |
10527 | r->r_offset = roff; | |
10528 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10529 | r->r_addend = relative_targ + roff; | |
10530 | } | |
10531 | } | |
10532 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10533 | roff += 4; | |
10534 | if (PPC_HI (off) != 0) | |
10535 | { | |
10536 | ++r; | |
10537 | roff += 4; | |
10538 | r->r_offset = roff; | |
10539 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10540 | r->r_addend = relative_targ + roff; | |
10541 | } | |
10542 | if (PPC_LO (off) != 0) | |
10543 | { | |
10544 | ++r; | |
10545 | roff += 4; | |
10546 | r->r_offset = roff; | |
10547 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10548 | r->r_addend = relative_targ + roff; | |
10549 | } | |
10550 | } | |
10551 | return r; | |
10552 | } | |
10553 | ||
04bdff6a | 10554 | static bfd_byte * |
7c1f4227 | 10555 | build_power10_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, |
04bdff6a AM |
10556 | bfd_boolean load) |
10557 | { | |
10558 | uint64_t insn; | |
10559 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10560 | { | |
10561 | off -= odd; | |
10562 | if (odd) | |
10563 | { | |
10564 | bfd_put_32 (abfd, NOP, p); | |
10565 | p += 4; | |
10566 | } | |
10567 | if (load) | |
10568 | insn = PLD_R12_PC; | |
10569 | else | |
10570 | insn = PADDI_R12_PC; | |
10571 | insn |= D34 (off); | |
10572 | bfd_put_32 (abfd, insn >> 32, p); | |
10573 | p += 4; | |
10574 | bfd_put_32 (abfd, insn, p); | |
10575 | } | |
10576 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10577 | for li is -0x8000, which when shifted by 34 and added gives a | |
10578 | minimum value of -0x2000200000000. The maximum value is | |
10579 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10580 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10581 | { | |
10582 | off -= 8 - odd; | |
10583 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10584 | p += 4; | |
10585 | if (!odd) | |
10586 | { | |
10587 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10588 | p += 4; | |
10589 | } | |
10590 | insn = PADDI_R12_PC | D34 (off); | |
10591 | bfd_put_32 (abfd, insn >> 32, p); | |
10592 | p += 4; | |
10593 | bfd_put_32 (abfd, insn, p); | |
10594 | p += 4; | |
10595 | if (odd) | |
10596 | { | |
10597 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10598 | p += 4; | |
10599 | } | |
10600 | if (load) | |
10601 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10602 | else | |
10603 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10604 | } | |
10605 | else | |
10606 | { | |
10607 | off -= odd + 8; | |
10608 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10609 | p += 4; | |
10610 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10611 | p += 4; | |
10612 | if (odd) | |
10613 | { | |
10614 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10615 | p += 4; | |
10616 | } | |
10617 | insn = PADDI_R12_PC | D34 (off); | |
10618 | bfd_put_32 (abfd, insn >> 32, p); | |
10619 | p += 4; | |
10620 | bfd_put_32 (abfd, insn, p); | |
10621 | p += 4; | |
10622 | if (!odd) | |
10623 | { | |
10624 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10625 | p += 4; | |
10626 | } | |
10627 | if (load) | |
10628 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10629 | else | |
10630 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10631 | } | |
10632 | p += 4; | |
10633 | return p; | |
10634 | } | |
10635 | ||
10636 | static unsigned int | |
7c1f4227 | 10637 | size_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10638 | { |
10639 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10640 | return odd + 8; | |
10641 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10642 | return 20; | |
10643 | else | |
10644 | return 24; | |
10645 | } | |
10646 | ||
10647 | static unsigned int | |
7c1f4227 | 10648 | num_relocs_for_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10649 | { |
10650 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10651 | return 1; | |
10652 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10653 | return 2; | |
10654 | else | |
10655 | return 3; | |
10656 | } | |
10657 | ||
10658 | static Elf_Internal_Rela * | |
7c1f4227 | 10659 | emit_relocs_for_power10_offset (struct bfd_link_info *info, |
04bdff6a AM |
10660 | Elf_Internal_Rela *r, bfd_vma roff, |
10661 | bfd_vma targ, bfd_vma off, int odd) | |
10662 | { | |
10663 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10664 | roff += odd; | |
10665 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10666 | { | |
10667 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10668 | r->r_offset = roff + d_offset; | |
10669 | r->r_addend = targ + 8 - odd - d_offset; | |
10670 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10671 | ++r; | |
10672 | roff += 8 - odd; | |
10673 | } | |
10674 | else | |
10675 | { | |
10676 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10677 | r->r_offset = roff + d_offset; | |
10678 | r->r_addend = targ + 8 + odd - d_offset; | |
10679 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10680 | ++r; | |
10681 | roff += 4; | |
10682 | r->r_offset = roff + d_offset; | |
10683 | r->r_addend = targ + 4 + odd - d_offset; | |
10684 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10685 | ++r; | |
10686 | roff += 4 + odd; | |
10687 | } | |
10688 | r->r_offset = roff; | |
10689 | r->r_addend = targ; | |
10690 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10691 | return r; | |
10692 | } | |
10693 | ||
df136d64 AM |
10694 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10695 | ||
10696 | static bfd_byte * | |
10697 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10698 | { | |
10699 | delta /= 4; | |
10700 | if (delta < 64) | |
10701 | *eh++ = DW_CFA_advance_loc + delta; | |
10702 | else if (delta < 256) | |
10703 | { | |
10704 | *eh++ = DW_CFA_advance_loc1; | |
10705 | *eh++ = delta; | |
10706 | } | |
10707 | else if (delta < 65536) | |
10708 | { | |
10709 | *eh++ = DW_CFA_advance_loc2; | |
10710 | bfd_put_16 (abfd, delta, eh); | |
10711 | eh += 2; | |
10712 | } | |
10713 | else | |
10714 | { | |
10715 | *eh++ = DW_CFA_advance_loc4; | |
10716 | bfd_put_32 (abfd, delta, eh); | |
10717 | eh += 4; | |
10718 | } | |
10719 | return eh; | |
10720 | } | |
10721 | ||
10722 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10723 | ||
10724 | static unsigned int | |
10725 | eh_advance_size (unsigned int delta) | |
10726 | { | |
10727 | if (delta < 64 * 4) | |
10728 | /* DW_CFA_advance_loc+[1..63]. */ | |
10729 | return 1; | |
10730 | if (delta < 256 * 4) | |
10731 | /* DW_CFA_advance_loc1, byte. */ | |
10732 | return 2; | |
10733 | if (delta < 65536 * 4) | |
10734 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10735 | return 3; | |
10736 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10737 | return 5; | |
10738 | } | |
10739 | ||
794e51c0 AM |
10740 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10741 | to update a plt entry in one thread and have another thread see a | |
10742 | stale zero toc entry. To avoid this we need some sort of acquire | |
10743 | barrier in the call stub. One solution is to make the load of the | |
10744 | toc word seem to appear to depend on the load of the function entry | |
10745 | word. Another solution is to test for r2 being zero, and branch to | |
10746 | the appropriate glink entry if so. | |
10747 | ||
10748 | . fake dep barrier compare | |
71a39c98 AM |
10749 | . ld 12,xxx(2) ld 12,xxx(2) |
10750 | . mtctr 12 mtctr 12 | |
10751 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10752 | . add 2,2,11 cmpldi 2,0 |
10753 | . ld 2,xxx+8(2) bnectr+ | |
10754 | . bctr b <glink_entry> | |
10755 | ||
10756 | The solution involving the compare turns out to be faster, so | |
10757 | that's what we use unless the branch won't reach. */ | |
10758 | ||
10759 | #define ALWAYS_USE_FAKE_DEP 0 | |
10760 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10761 | |
794e51c0 AM |
10762 | static inline unsigned int |
10763 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10764 | struct ppc_stub_hash_entry *stub_entry, | |
10765 | bfd_vma off) | |
10766 | { | |
05d0e962 | 10767 | unsigned size; |
b9e5796b | 10768 | |
05d0e962 AM |
10769 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10770 | { | |
7c1f4227 | 10771 | if (htab->power10_stubs) |
04bdff6a AM |
10772 | { |
10773 | bfd_vma start = (stub_entry->stub_offset | |
10774 | + stub_entry->group->stub_sec->output_offset | |
10775 | + stub_entry->group->stub_sec->output_section->vma); | |
10776 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
10777 | start += 4; | |
7c1f4227 | 10778 | size = 8 + size_power10_offset (off, start & 4); |
04bdff6a AM |
10779 | } |
10780 | else | |
10781 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10782 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10783 | size += 4; | |
10784 | return size; | |
10785 | } | |
10786 | ||
10787 | size = 12; | |
b9e5796b AM |
10788 | if (ALWAYS_EMIT_R2SAVE |
10789 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10790 | size += 4; | |
10791 | if (PPC_HA (off) != 0) | |
794e51c0 | 10792 | size += 4; |
b9e5796b AM |
10793 | if (htab->opd_abi) |
10794 | { | |
10795 | size += 4; | |
e7d1c40c | 10796 | if (htab->params->plt_static_chain) |
b9e5796b | 10797 | size += 4; |
bd4d2eaa AM |
10798 | if (htab->params->plt_thread_safe |
10799 | && htab->elf.dynamic_sections_created | |
10800 | && stub_entry->h != NULL | |
10801 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10802 | size += 8; |
e7d1c40c | 10803 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10804 | size += 4; |
10805 | } | |
794e51c0 | 10806 | if (stub_entry->h != NULL |
ed7007c1 | 10807 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10808 | && htab->params->tls_get_addr_opt) |
f378ab09 | 10809 | { |
9e7028aa AM |
10810 | if (htab->params->no_tls_get_addr_regsave) |
10811 | { | |
10812 | size += 7 * 4; | |
10813 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10814 | size += 6 * 4; | |
10815 | } | |
10816 | else | |
10817 | { | |
10818 | size += 30 * 4; | |
10819 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10820 | size += 4; | |
10821 | } | |
f378ab09 | 10822 | } |
794e51c0 AM |
10823 | return size; |
10824 | } | |
10825 | ||
2420fff6 AM |
10826 | /* Depending on the sign of plt_stub_align: |
10827 | If positive, return the padding to align to a 2**plt_stub_align | |
10828 | boundary. | |
10829 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10830 | boundaries if we align, then return the padding needed to do so. */ | |
10831 | ||
794e51c0 AM |
10832 | static inline unsigned int |
10833 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10834 | struct ppc_stub_hash_entry *stub_entry, | |
10835 | bfd_vma plt_off) | |
10836 | { | |
2420fff6 | 10837 | int stub_align; |
1aa42141 | 10838 | unsigned stub_size; |
6f20ed8a | 10839 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10840 | |
2420fff6 AM |
10841 | if (htab->params->plt_stub_align >= 0) |
10842 | { | |
10843 | stub_align = 1 << htab->params->plt_stub_align; | |
10844 | if ((stub_off & (stub_align - 1)) != 0) | |
10845 | return stub_align - (stub_off & (stub_align - 1)); | |
10846 | return 0; | |
10847 | } | |
10848 | ||
10849 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 10850 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 10851 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10852 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10853 | return stub_align - (stub_off & (stub_align - 1)); |
10854 | return 0; | |
10855 | } | |
10856 | ||
10857 | /* Build a .plt call stub. */ | |
10858 | ||
10859 | static inline bfd_byte * | |
10860 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10861 | struct ppc_stub_hash_entry *stub_entry, | |
10862 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10863 | { | |
e7d1c40c | 10864 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10865 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10866 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10867 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10868 | && htab->elf.dynamic_sections_created | |
10869 | && stub_entry->h != NULL | |
10870 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10871 | bfd_boolean use_fake_dep = plt_thread_safe; |
10872 | bfd_vma cmp_branch_off = 0; | |
10873 | ||
10874 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10875 | && plt_load_toc |
794e51c0 | 10876 | && plt_thread_safe |
ed7007c1 | 10877 | && !(is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10878 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10879 | { |
10880 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10881 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10882 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10883 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10884 | bfd_vma to, from; |
10885 | ||
68d62958 AM |
10886 | if (pltindex > 32768) |
10887 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10888 | to = (glinkoff |
10889 | + htab->glink->output_offset | |
10890 | + htab->glink->output_section->vma); | |
6f20ed8a | 10891 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10892 | + 4 * (ALWAYS_EMIT_R2SAVE |
10893 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10894 | + 4 * (PPC_HA (offset) != 0) | |
10895 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10896 | != PPC_HA (offset)) | |
10897 | + 4 * (plt_static_chain != 0) | |
10898 | + 20 | |
6f20ed8a AM |
10899 | + stub_entry->group->stub_sec->output_offset |
10900 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10901 | cmp_branch_off = to - from; |
10902 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10903 | } | |
10904 | ||
ac2df442 AM |
10905 | if (PPC_HA (offset) != 0) |
10906 | { | |
176a0d42 AM |
10907 | if (r != NULL) |
10908 | { | |
794e51c0 AM |
10909 | if (ALWAYS_EMIT_R2SAVE |
10910 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10911 | r[0].r_offset += 4; | |
176a0d42 | 10912 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10913 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10914 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10915 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10916 | if (plt_load_toc) |
176a0d42 | 10917 | { |
b9e5796b | 10918 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10919 | { |
b9e5796b AM |
10920 | r[2].r_offset = r[1].r_offset + 4; |
10921 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10922 | r[2].r_addend = r[0].r_addend; | |
10923 | } | |
10924 | else | |
10925 | { | |
10926 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10927 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10928 | r[2].r_addend = r[0].r_addend + 8; | |
10929 | if (plt_static_chain) | |
10930 | { | |
10931 | r[3].r_offset = r[2].r_offset + 4; | |
10932 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10933 | r[3].r_addend = r[0].r_addend + 16; | |
10934 | } | |
c7131b65 | 10935 | } |
176a0d42 AM |
10936 | } |
10937 | } | |
794e51c0 AM |
10938 | if (ALWAYS_EMIT_R2SAVE |
10939 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10940 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10941 | if (plt_load_toc) |
10942 | { | |
10943 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10944 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10945 | } | |
10946 | else | |
10947 | { | |
10948 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10949 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10950 | } | |
b9e5796b AM |
10951 | if (plt_load_toc |
10952 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10953 | { |
71a39c98 | 10954 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10955 | offset = 0; |
10956 | } | |
71a39c98 | 10957 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10958 | if (plt_load_toc) |
794e51c0 | 10959 | { |
b9e5796b AM |
10960 | if (use_fake_dep) |
10961 | { | |
10962 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10963 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10964 | } | |
10965 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10966 | if (plt_static_chain) | |
10967 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10968 | } |
ac2df442 AM |
10969 | } |
10970 | else | |
10971 | { | |
176a0d42 AM |
10972 | if (r != NULL) |
10973 | { | |
794e51c0 AM |
10974 | if (ALWAYS_EMIT_R2SAVE |
10975 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10976 | r[0].r_offset += 4; | |
176a0d42 | 10977 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10978 | if (plt_load_toc) |
176a0d42 | 10979 | { |
b9e5796b | 10980 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10981 | { |
b9e5796b AM |
10982 | r[1].r_offset = r[0].r_offset + 4; |
10983 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10984 | r[1].r_addend = r[0].r_addend; | |
10985 | } | |
10986 | else | |
10987 | { | |
10988 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10989 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10990 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10991 | if (plt_static_chain) | |
10992 | { | |
10993 | r[2].r_offset = r[1].r_offset + 4; | |
10994 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10995 | r[2].r_addend = r[0].r_addend + 8; | |
10996 | } | |
c7131b65 | 10997 | } |
176a0d42 AM |
10998 | } |
10999 | } | |
794e51c0 AM |
11000 | if (ALWAYS_EMIT_R2SAVE |
11001 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11002 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11003 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11004 | if (plt_load_toc |
11005 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11006 | { |
11007 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11008 | offset = 0; | |
11009 | } | |
71a39c98 | 11010 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11011 | if (plt_load_toc) |
794e51c0 | 11012 | { |
b9e5796b AM |
11013 | if (use_fake_dep) |
11014 | { | |
11015 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11016 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11017 | } | |
11018 | if (plt_static_chain) | |
11019 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11020 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11021 | } |
ac2df442 | 11022 | } |
b9e5796b | 11023 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11024 | { |
11025 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11026 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11027 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11028 | } |
11029 | else | |
407aa07c | 11030 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11031 | return p; |
11032 | } | |
11033 | ||
a7f2871e AM |
11034 | /* Build a special .plt call stub for __tls_get_addr. */ |
11035 | ||
b9ca1af6 | 11036 | #define LD_R0_0R3 0xe8030000 |
a7f2871e AM |
11037 | #define LD_R12_0R3 0xe9830000 |
11038 | #define MR_R0_R3 0x7c601b78 | |
b9ca1af6 | 11039 | #define CMPDI_R0_0 0x2c200000 |
a7f2871e AM |
11040 | #define ADD_R3_R12_R13 0x7c6c6a14 |
11041 | #define BEQLR 0x4d820020 | |
11042 | #define MR_R3_R0 0x7c030378 | |
a7f2871e | 11043 | #define BCTRL 0x4e800421 |
a7f2871e AM |
11044 | |
11045 | static inline bfd_byte * | |
794e51c0 AM |
11046 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11047 | struct ppc_stub_hash_entry *stub_entry, | |
11048 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11049 | { |
e7d1c40c | 11050 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 11051 | bfd_byte *loc = p; |
9e7028aa | 11052 | unsigned int i; |
794e51c0 | 11053 | |
b9ca1af6 | 11054 | bfd_put_32 (obfd, LD_R0_0R3 + 0, p), p += 4; |
a7f2871e | 11055 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; |
b9ca1af6 | 11056 | bfd_put_32 (obfd, CMPDI_R0_0, p), p += 4; |
a7f2871e | 11057 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; |
a7f2871e AM |
11058 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; |
11059 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11060 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9e7028aa AM |
11061 | if (htab->params->no_tls_get_addr_regsave) |
11062 | { | |
11063 | if (r != NULL) | |
11064 | r[0].r_offset += 7 * 4; | |
11065 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
11066 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
11067 | ||
11068 | bfd_put_32 (obfd, MFLR_R0, p); | |
11069 | p += 4; | |
11070 | bfd_put_32 (obfd, STD_R0_0R1 + STK_LINKER (htab), p); | |
11071 | p += 4; | |
11072 | ||
11073 | if (r != NULL) | |
11074 | r[0].r_offset += 2 * 4; | |
11075 | p = build_plt_stub (htab, stub_entry, p, offset, r); | |
11076 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11077 | ||
11078 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11079 | p += 4; | |
11080 | bfd_put_32 (obfd, LD_R0_0R1 + STK_LINKER (htab), p); | |
11081 | p += 4; | |
11082 | bfd_put_32 (obfd, MTLR_R0, p); | |
11083 | p += 4; | |
11084 | bfd_put_32 (obfd, BLR, p); | |
11085 | p += 4; | |
11086 | } | |
11087 | else | |
11088 | { | |
11089 | p = tls_get_addr_prologue (obfd, p, htab); | |
f378ab09 | 11090 | |
9e7028aa AM |
11091 | if (r != NULL) |
11092 | r[0].r_offset += 18 * 4; | |
a7f2871e | 11093 | |
9e7028aa AM |
11094 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
11095 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11096 | ||
11097 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11098 | { | |
11099 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11100 | p += 4; | |
11101 | } | |
a7f2871e | 11102 | |
9e7028aa AM |
11103 | p = tls_get_addr_epilogue (obfd, p, htab); |
11104 | } | |
a7f2871e | 11105 | |
df136d64 AM |
11106 | if (htab->glink_eh_frame != NULL |
11107 | && htab->glink_eh_frame->size != 0) | |
11108 | { | |
11109 | bfd_byte *base, *eh; | |
df136d64 AM |
11110 | |
11111 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11112 | eh = base + stub_entry->group->eh_size; | |
9e7028aa AM |
11113 | if (htab->params->no_tls_get_addr_regsave) |
11114 | { | |
11115 | unsigned int lr_used, delta; | |
11116 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11117 | delta = lr_used - stub_entry->group->lr_restore; | |
11118 | stub_entry->group->lr_restore = lr_used + 16; | |
11119 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11120 | *eh++ = DW_CFA_offset_extended_sf; | |
11121 | *eh++ = 65; | |
11122 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11123 | *eh++ = DW_CFA_advance_loc + 4; | |
11124 | } | |
11125 | else | |
11126 | { | |
11127 | unsigned int cfa_updt, delta; | |
11128 | /* After the bctrl, lr has been modified so we need to emit | |
11129 | .eh_frame info saying the return address is on the stack. In | |
11130 | fact we must put the EH info at or before the call rather | |
11131 | than after it, because the EH info for a call needs to be | |
11132 | specified by that point. | |
11133 | See libgcc/unwind-dw2.c execute_cfa_program. | |
11134 | Any stack pointer update must be described immediately after | |
11135 | the instruction making the change, and since the stdu occurs | |
11136 | after saving regs we put all the reg saves and the cfa | |
11137 | change there. */ | |
11138 | cfa_updt = stub_entry->stub_offset + 18 * 4; | |
11139 | delta = cfa_updt - stub_entry->group->lr_restore; | |
11140 | stub_entry->group->lr_restore | |
11141 | = stub_entry->stub_offset + (p - loc) - 4; | |
11142 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11143 | *eh++ = DW_CFA_def_cfa_offset; | |
11144 | if (htab->opd_abi) | |
11145 | { | |
11146 | *eh++ = 128; | |
11147 | *eh++ = 1; | |
11148 | } | |
11149 | else | |
11150 | *eh++ = 96; | |
11151 | *eh++ = DW_CFA_offset_extended_sf; | |
11152 | *eh++ = 65; | |
11153 | *eh++ = (-16 / 8) & 0x7f; | |
11154 | for (i = 4; i < 12; i++) | |
11155 | { | |
11156 | *eh++ = DW_CFA_offset + i; | |
11157 | *eh++ = (htab->opd_abi ? 13 : 12) - i; | |
11158 | } | |
11159 | *eh++ = (DW_CFA_advance_loc | |
11160 | + (stub_entry->group->lr_restore - 8 - cfa_updt) / 4); | |
11161 | *eh++ = DW_CFA_def_cfa_offset; | |
11162 | *eh++ = 0; | |
11163 | for (i = 4; i < 12; i++) | |
11164 | *eh++ = DW_CFA_restore + i; | |
11165 | *eh++ = DW_CFA_advance_loc + 2; | |
11166 | } | |
df136d64 AM |
11167 | *eh++ = DW_CFA_restore_extended; |
11168 | *eh++ = 65; | |
11169 | stub_entry->group->eh_size = eh - base; | |
11170 | } | |
a7f2871e AM |
11171 | return p; |
11172 | } | |
11173 | ||
176a0d42 AM |
11174 | static Elf_Internal_Rela * |
11175 | get_relocs (asection *sec, int count) | |
11176 | { | |
11177 | Elf_Internal_Rela *relocs; | |
11178 | struct bfd_elf_section_data *elfsec_data; | |
11179 | ||
11180 | elfsec_data = elf_section_data (sec); | |
11181 | relocs = elfsec_data->relocs; | |
11182 | if (relocs == NULL) | |
11183 | { | |
11184 | bfd_size_type relsize; | |
11185 | relsize = sec->reloc_count * sizeof (*relocs); | |
11186 | relocs = bfd_alloc (sec->owner, relsize); | |
11187 | if (relocs == NULL) | |
11188 | return NULL; | |
11189 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11190 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11191 | sizeof (Elf_Internal_Shdr)); | |
11192 | if (elfsec_data->rela.hdr == NULL) | |
11193 | return NULL; | |
11194 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11195 | * sizeof (Elf64_External_Rela)); | |
11196 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11197 | sec->reloc_count = 0; |
11198 | } | |
11199 | relocs += sec->reloc_count; | |
11200 | sec->reloc_count += count; | |
11201 | return relocs; | |
11202 | } | |
11203 | ||
3d58e1fc AM |
11204 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
11205 | forms, to the equivalent relocs against the global symbol given by | |
11206 | STUB_ENTRY->H. */ | |
11207 | ||
11208 | static bfd_boolean | |
11209 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
11210 | struct ppc_stub_hash_entry *stub_entry, | |
11211 | Elf_Internal_Rela *r, unsigned int num_rel) | |
11212 | { | |
11213 | struct elf_link_hash_entry **hashes; | |
11214 | unsigned long symndx; | |
11215 | struct ppc_link_hash_entry *h; | |
11216 | bfd_vma symval; | |
11217 | ||
11218 | /* Relocs are always against symbols in their own object file. Fake | |
11219 | up global sym hashes for the stub bfd (which has no symbols). */ | |
11220 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
11221 | if (hashes == NULL) | |
11222 | { | |
11223 | bfd_size_type hsize; | |
11224 | ||
11225 | /* When called the first time, stub_globals will contain the | |
11226 | total number of symbols seen during stub sizing. After | |
11227 | allocating, stub_globals is used as an index to fill the | |
11228 | hashes array. */ | |
11229 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11230 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11231 | if (hashes == NULL) | |
11232 | return FALSE; | |
11233 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
11234 | htab->stub_globals = 1; | |
11235 | } | |
11236 | symndx = htab->stub_globals++; | |
11237 | h = stub_entry->h; | |
11238 | hashes[symndx] = &h->elf; | |
11239 | if (h->oh != NULL && h->oh->is_func) | |
11240 | h = ppc_follow_link (h->oh); | |
11241 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11242 | || h->elf.root.type == bfd_link_hash_defweak); | |
ed7007c1 | 11243 | symval = defined_sym_val (&h->elf); |
3d58e1fc AM |
11244 | while (num_rel-- != 0) |
11245 | { | |
11246 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11247 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11248 | { | |
11249 | /* H is an opd symbol. The addend must be zero, and the | |
11250 | branch reloc is the only one we can convert. */ | |
11251 | r->r_addend = 0; | |
11252 | break; | |
11253 | } | |
11254 | else | |
11255 | r->r_addend -= symval; | |
11256 | --r; | |
11257 | } | |
11258 | return TRUE; | |
11259 | } | |
11260 | ||
aa374f67 | 11261 | static bfd_vma |
25f53a85 | 11262 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11263 | struct ppc_stub_hash_entry *stub_entry) |
11264 | { | |
25f53a85 | 11265 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11266 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11267 | |
11268 | if (r2off == 0) | |
11269 | { | |
11270 | /* Support linking -R objects. Get the toc pointer from the | |
11271 | opd entry. */ | |
11272 | char buf[8]; | |
b9e5796b AM |
11273 | if (!htab->opd_abi) |
11274 | return r2off; | |
aa374f67 AM |
11275 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11276 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11277 | ||
11278 | if (strcmp (opd->name, ".opd") != 0 | |
11279 | || opd->reloc_count != 0) | |
11280 | { | |
2cdcc330 AM |
11281 | info->callbacks->einfo |
11282 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11283 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11284 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11285 | return (bfd_vma) -1; |
aa374f67 AM |
11286 | } |
11287 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11288 | return (bfd_vma) -1; |
aa374f67 | 11289 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11290 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11291 | } |
6f20ed8a | 11292 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11293 | return r2off; |
11294 | } | |
11295 | ||
b34976b6 | 11296 | static bfd_boolean |
4ce794b7 | 11297 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11298 | { |
721956f4 AM |
11299 | struct ppc_stub_hash_entry *stub_entry; |
11300 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11301 | struct bfd_link_info *info; |
11302 | struct ppc_link_hash_table *htab; | |
721956f4 | 11303 | bfd_byte *loc; |
3d58e1fc | 11304 | bfd_byte *p, *relp; |
1aa42141 | 11305 | bfd_vma targ, off; |
176a0d42 | 11306 | Elf_Internal_Rela *r; |
e054468f | 11307 | asection *plt; |
3d58e1fc | 11308 | int num_rel; |
04bdff6a | 11309 | int odd; |
5d1634d7 | 11310 | |
721956f4 AM |
11311 | /* Massage our args to the form they really have. */ |
11312 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11313 | info = in_arg; |
5d1634d7 | 11314 | |
abf874aa CL |
11315 | /* Fail if the target section could not be assigned to an output |
11316 | section. The user should fix his linker script. */ | |
11317 | if (stub_entry->target_section != NULL | |
11318 | && stub_entry->target_section->output_section == NULL | |
11319 | && info->non_contiguous_regions) | |
53215f21 CL |
11320 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
11321 | "Retry without --enable-non-contiguous-regions.\n"), | |
11322 | stub_entry->target_section); | |
abf874aa CL |
11323 | |
11324 | /* Same for the group. */ | |
11325 | if (stub_entry->group->stub_sec != NULL | |
11326 | && stub_entry->group->stub_sec->output_section == NULL | |
11327 | && info->non_contiguous_regions) | |
53215f21 CL |
11328 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11329 | "output section. Retry without " | |
11330 | "--enable-non-contiguous-regions.\n"), | |
11331 | stub_entry->group->stub_sec, | |
11332 | stub_entry->target_section); | |
abf874aa | 11333 | |
5d1634d7 | 11334 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11335 | if (htab == NULL) |
11336 | return FALSE; | |
5d1634d7 | 11337 | |
1aa42141 | 11338 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11339 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11340 | |
4ce794b7 | 11341 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11342 | switch (stub_entry->stub_type) |
5d1634d7 | 11343 | { |
721956f4 | 11344 | case ppc_stub_long_branch: |
ad8e1ba5 | 11345 | case ppc_stub_long_branch_r2off: |
721956f4 | 11346 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11347 | targ = (stub_entry->target_value |
6911b7dc AM |
11348 | + stub_entry->target_section->output_offset |
11349 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11350 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11351 | |
721956f4 | 11352 | /* And this is where we are coming from. */ |
1aa42141 AM |
11353 | off = (stub_entry->stub_offset |
11354 | + stub_entry->group->stub_sec->output_offset | |
11355 | + stub_entry->group->stub_sec->output_section->vma); | |
11356 | off = targ - off; | |
e86ce104 | 11357 | |
9e390558 | 11358 | p = loc; |
ac2df442 | 11359 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11360 | { |
25f53a85 | 11361 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11362 | |
a7c49797 | 11363 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11364 | { |
11365 | htab->stub_error = TRUE; | |
11366 | return FALSE; | |
11367 | } | |
9e390558 AM |
11368 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11369 | p += 4; | |
ac2df442 AM |
11370 | if (PPC_HA (r2off) != 0) |
11371 | { | |
e7d1c40c | 11372 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11373 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11374 | p += 4; | |
a7c49797 AM |
11375 | } |
11376 | if (PPC_LO (r2off) != 0) | |
11377 | { | |
11378 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11379 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11380 | p += 4; | |
ac2df442 | 11381 | } |
9e390558 | 11382 | off -= p - loc; |
ad8e1ba5 | 11383 | } |
9e390558 AM |
11384 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11385 | p += 4; | |
ad8e1ba5 | 11386 | |
5c3dead3 AM |
11387 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11388 | { | |
cf97bcb0 AM |
11389 | _bfd_error_handler |
11390 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11391 | stub_entry->root.string); |
5c3dead3 AM |
11392 | htab->stub_error = TRUE; |
11393 | return FALSE; | |
11394 | } | |
ee75fd95 AM |
11395 | |
11396 | if (info->emitrelocations) | |
11397 | { | |
6f20ed8a | 11398 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11399 | if (r == NULL) |
11400 | return FALSE; | |
9e390558 | 11401 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11402 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11403 | r->r_addend = targ; |
3d58e1fc AM |
11404 | if (stub_entry->h != NULL |
11405 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
11406 | return FALSE; | |
ee75fd95 | 11407 | } |
721956f4 | 11408 | break; |
e86ce104 | 11409 | |
721956f4 | 11410 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11411 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11412 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11413 | stub_entry->root.string + 9, | |
b34976b6 | 11414 | FALSE, FALSE); |
721956f4 AM |
11415 | if (br_entry == NULL) |
11416 | { | |
cf97bcb0 AM |
11417 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11418 | stub_entry->root.string); | |
b34976b6 AM |
11419 | htab->stub_error = TRUE; |
11420 | return FALSE; | |
721956f4 AM |
11421 | } |
11422 | ||
1aa42141 | 11423 | targ = (stub_entry->target_value |
176a0d42 AM |
11424 | + stub_entry->target_section->output_offset |
11425 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11426 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11427 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11428 | |
1aa42141 | 11429 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11430 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11431 | |
f94498ff | 11432 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11433 | { |
f94498ff | 11434 | br_entry->iter = 0; |
84f5d08e | 11435 | |
f94498ff | 11436 | if (htab->relbrlt != NULL) |
84f5d08e | 11437 | { |
f94498ff AM |
11438 | /* Create a reloc for the branch lookup table entry. */ |
11439 | Elf_Internal_Rela rela; | |
11440 | bfd_byte *rl; | |
11441 | ||
11442 | rela.r_offset = (br_entry->offset | |
11443 | + htab->brlt->output_offset | |
11444 | + htab->brlt->output_section->vma); | |
11445 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11446 | rela.r_addend = targ; |
f94498ff AM |
11447 | |
11448 | rl = htab->relbrlt->contents; | |
11449 | rl += (htab->relbrlt->reloc_count++ | |
11450 | * sizeof (Elf64_External_Rela)); | |
11451 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11452 | } | |
11453 | else if (info->emitrelocations) | |
11454 | { | |
176a0d42 AM |
11455 | r = get_relocs (htab->brlt, 1); |
11456 | if (r == NULL) | |
11457 | return FALSE; | |
11458 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11459 | normal reloc processing. Symbols and offsets are not | |
11460 | translated from input file to output file form, so | |
11461 | set up the offset per the output file. */ | |
f94498ff AM |
11462 | r->r_offset = (br_entry->offset |
11463 | + htab->brlt->output_offset | |
11464 | + htab->brlt->output_section->vma); | |
11465 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11466 | r->r_addend = targ; |
84f5d08e | 11467 | } |
84f5d08e | 11468 | } |
721956f4 | 11469 | |
1aa42141 | 11470 | targ = (br_entry->offset |
176a0d42 AM |
11471 | + htab->brlt->output_offset |
11472 | + htab->brlt->output_section->vma); | |
11473 | ||
1aa42141 AM |
11474 | off = (elf_gp (info->output_bfd) |
11475 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11476 | off = targ - off; | |
721956f4 | 11477 | |
ad8e1ba5 | 11478 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11479 | { |
25f53a85 | 11480 | info->callbacks->einfo |
c1c8c1ef | 11481 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11482 | stub_entry->root.string); |
5d1634d7 | 11483 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11484 | htab->stub_error = TRUE; |
11485 | return FALSE; | |
5d1634d7 | 11486 | } |
41bd81ab | 11487 | |
176a0d42 AM |
11488 | if (info->emitrelocations) |
11489 | { | |
6f20ed8a | 11490 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11491 | if (r == NULL) |
11492 | return FALSE; | |
6f20ed8a | 11493 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11494 | if (bfd_big_endian (info->output_bfd)) |
11495 | r[0].r_offset += 2; | |
00f412ee | 11496 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11497 | r[0].r_offset += 4; |
11498 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11499 | r[0].r_addend = targ; |
176a0d42 AM |
11500 | if (PPC_HA (off) != 0) |
11501 | { | |
11502 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11503 | r[1].r_offset = r[0].r_offset + 4; | |
11504 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11505 | r[1].r_addend = r[0].r_addend; | |
11506 | } | |
11507 | } | |
11508 | ||
9e390558 | 11509 | p = loc; |
00f412ee | 11510 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11511 | { |
176a0d42 | 11512 | if (PPC_HA (off) != 0) |
ac2df442 | 11513 | { |
e7d1c40c | 11514 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11515 | ADDIS_R12_R2 | PPC_HA (off), p); |
11516 | p += 4; | |
e7d1c40c | 11517 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11518 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11519 | } |
11520 | else | |
9e390558 AM |
11521 | bfd_put_32 (htab->params->stub_bfd, |
11522 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11523 | } |
11524 | else | |
11525 | { | |
25f53a85 | 11526 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11527 | |
a7c49797 | 11528 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11529 | { |
11530 | htab->stub_error = TRUE; | |
11531 | return FALSE; | |
11532 | } | |
ad8e1ba5 | 11533 | |
9e390558 AM |
11534 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11535 | p += 4; | |
176a0d42 | 11536 | if (PPC_HA (off) != 0) |
ac2df442 | 11537 | { |
e7d1c40c | 11538 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11539 | ADDIS_R12_R2 | PPC_HA (off), p); |
11540 | p += 4; | |
e7d1c40c | 11541 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11542 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11543 | } |
11544 | else | |
9e390558 | 11545 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11546 | |
11547 | if (PPC_HA (r2off) != 0) | |
11548 | { | |
9e390558 | 11549 | p += 4; |
e7d1c40c | 11550 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11551 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11552 | } |
11553 | if (PPC_LO (r2off) != 0) | |
11554 | { | |
9e390558 | 11555 | p += 4; |
e7d1c40c | 11556 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11557 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11558 | } |
ad8e1ba5 | 11559 | } |
9e390558 AM |
11560 | p += 4; |
11561 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11562 | p += 4; | |
407aa07c AM |
11563 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11564 | p += 4; | |
721956f4 | 11565 | break; |
5d1634d7 | 11566 | |
05d0e962 AM |
11567 | case ppc_stub_long_branch_notoc: |
11568 | case ppc_stub_long_branch_both: | |
11569 | case ppc_stub_plt_branch_notoc: | |
11570 | case ppc_stub_plt_branch_both: | |
11571 | case ppc_stub_plt_call_notoc: | |
11572 | case ppc_stub_plt_call_both: | |
11573 | p = loc; | |
f891966f | 11574 | off = (stub_entry->stub_offset |
05d0e962 AM |
11575 | + stub_entry->group->stub_sec->output_offset |
11576 | + stub_entry->group->stub_sec->output_section->vma); | |
11577 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11578 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11579 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11580 | { | |
11581 | off += 4; | |
11582 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
11583 | p += 4; | |
11584 | } | |
11585 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11586 | { | |
11587 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11588 | if (targ >= (bfd_vma) -2) | |
11589 | abort (); | |
11590 | ||
11591 | plt = htab->elf.splt; | |
11592 | if (!htab->elf.dynamic_sections_created | |
11593 | || stub_entry->h == NULL | |
11594 | || stub_entry->h->elf.dynindx == -1) | |
11595 | { | |
11596 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11597 | plt = htab->elf.iplt; | |
11598 | else | |
11599 | plt = htab->pltlocal; | |
11600 | } | |
11601 | targ += plt->output_offset + plt->output_section->vma; | |
11602 | } | |
11603 | else | |
11604 | targ = (stub_entry->target_value | |
11605 | + stub_entry->target_section->output_offset | |
11606 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11607 | odd = off & 4; |
05d0e962 | 11608 | off = targ - off; |
f891966f | 11609 | |
3d58e1fc AM |
11610 | relp = p; |
11611 | num_rel = 0; | |
7c1f4227 | 11612 | if (htab->power10_stubs) |
04bdff6a AM |
11613 | { |
11614 | bfd_boolean load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; | |
7c1f4227 | 11615 | p = build_power10_offset (htab->params->stub_bfd, p, off, odd, load); |
04bdff6a AM |
11616 | } |
11617 | else | |
11618 | { | |
11619 | /* The notoc stubs calculate their target (either a PLT entry or | |
11620 | the global entry point of a function) relative to the PC | |
11621 | returned by the "bcl" two instructions past the start of the | |
11622 | sequence emitted by build_offset. The offset is therefore 8 | |
11623 | less than calculated from the start of the sequence. */ | |
11624 | off -= 8; | |
11625 | p = build_offset (htab->params->stub_bfd, p, off, | |
11626 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
11627 | } | |
11628 | ||
f891966f | 11629 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11630 | { |
f891966f | 11631 | bfd_vma from; |
3d58e1fc | 11632 | num_rel = 1; |
f891966f AM |
11633 | from = (stub_entry->stub_offset |
11634 | + stub_entry->group->stub_sec->output_offset | |
11635 | + stub_entry->group->stub_sec->output_section->vma | |
11636 | + (p - loc)); | |
05d0e962 | 11637 | bfd_put_32 (htab->params->stub_bfd, |
f891966f | 11638 | B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11639 | } |
11640 | else | |
11641 | { | |
11642 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11643 | p += 4; | |
11644 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
11645 | } | |
11646 | p += 4; | |
df136d64 | 11647 | |
3d58e1fc AM |
11648 | if (info->emitrelocations) |
11649 | { | |
04bdff6a | 11650 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
7c1f4227 AM |
11651 | if (htab->power10_stubs) |
11652 | num_rel += num_relocs_for_power10_offset (off, odd); | |
04bdff6a AM |
11653 | else |
11654 | { | |
11655 | num_rel += num_relocs_for_offset (off); | |
11656 | roff += 16; | |
11657 | } | |
3d58e1fc AM |
11658 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11659 | if (r == NULL) | |
11660 | return FALSE; | |
7c1f4227 AM |
11661 | if (htab->power10_stubs) |
11662 | r = emit_relocs_for_power10_offset (info, r, roff, targ, off, odd); | |
04bdff6a AM |
11663 | else |
11664 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11665 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11666 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11667 | { | |
11668 | ++r; | |
11669 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11670 | r->r_offset = roff; | |
11671 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11672 | r->r_addend = targ; | |
11673 | if (stub_entry->h != NULL | |
11674 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11675 | return FALSE; | |
11676 | } | |
11677 | } | |
11678 | ||
7c1f4227 | 11679 | if (!htab->power10_stubs |
04bdff6a AM |
11680 | && htab->glink_eh_frame != NULL |
11681 | && htab->glink_eh_frame->size != 0) | |
df136d64 AM |
11682 | { |
11683 | bfd_byte *base, *eh; | |
11684 | unsigned int lr_used, delta; | |
11685 | ||
11686 | base = (htab->glink_eh_frame->contents | |
11687 | + stub_entry->group->eh_base + 17); | |
11688 | eh = base + stub_entry->group->eh_size; | |
11689 | lr_used = stub_entry->stub_offset + 8; | |
11690 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11691 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11692 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11693 | lr_used += 4; | |
11694 | delta = lr_used - stub_entry->group->lr_restore; | |
11695 | stub_entry->group->lr_restore = lr_used + 8; | |
11696 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11697 | *eh++ = DW_CFA_register; | |
11698 | *eh++ = 65; | |
11699 | *eh++ = 12; | |
11700 | *eh++ = DW_CFA_advance_loc + 2; | |
11701 | *eh++ = DW_CFA_restore_extended; | |
11702 | *eh++ = 65; | |
11703 | stub_entry->group->eh_size = eh - base; | |
11704 | } | |
05d0e962 AM |
11705 | break; |
11706 | ||
721956f4 | 11707 | case ppc_stub_plt_call: |
794e51c0 | 11708 | case ppc_stub_plt_call_r2save: |
e054468f | 11709 | if (stub_entry->h != NULL |
b31867b6 AM |
11710 | && stub_entry->h->is_func_descriptor |
11711 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11712 | { |
b31867b6 AM |
11713 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11714 | ||
11715 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11716 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11717 | if (fh->elf.root.type == bfd_link_hash_undefined |
11718 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11719 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11720 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11721 | } |
11722 | ||
721956f4 | 11723 | /* Now build the stub. */ |
1aa42141 AM |
11724 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11725 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11726 | abort (); |
11727 | ||
33e44f2e | 11728 | plt = htab->elf.splt; |
25f23106 AM |
11729 | if (!htab->elf.dynamic_sections_created |
11730 | || stub_entry->h == NULL | |
11731 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11732 | { |
11733 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11734 | plt = htab->elf.iplt; | |
11735 | else | |
11736 | plt = htab->pltlocal; | |
11737 | } | |
1aa42141 | 11738 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11739 | |
1aa42141 AM |
11740 | off = (elf_gp (info->output_bfd) |
11741 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11742 | off = targ - off; | |
721956f4 | 11743 | |
ad8e1ba5 | 11744 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11745 | { |
25f53a85 | 11746 | info->callbacks->einfo |
695344c0 | 11747 | /* xgettext:c-format */ |
c1c8c1ef | 11748 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11749 | stub_entry->h != NULL |
11750 | ? stub_entry->h->elf.root.root.string | |
11751 | : "<local sym>"); | |
721956f4 | 11752 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11753 | htab->stub_error = TRUE; |
11754 | return FALSE; | |
721956f4 AM |
11755 | } |
11756 | ||
176a0d42 AM |
11757 | r = NULL; |
11758 | if (info->emitrelocations) | |
11759 | { | |
6f20ed8a | 11760 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11761 | ((PPC_HA (off) != 0) |
11762 | + (htab->opd_abi | |
e7d1c40c | 11763 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11764 | && PPC_HA (off + 16) == PPC_HA (off)) |
11765 | : 1))); | |
176a0d42 AM |
11766 | if (r == NULL) |
11767 | return FALSE; | |
6f20ed8a | 11768 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11769 | if (bfd_big_endian (info->output_bfd)) |
11770 | r[0].r_offset += 2; | |
1aa42141 | 11771 | r[0].r_addend = targ; |
176a0d42 | 11772 | } |
a7f2871e | 11773 | if (stub_entry->h != NULL |
ed7007c1 | 11774 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 11775 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11776 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11777 | else |
794e51c0 | 11778 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11779 | break; |
11780 | ||
a4b6fadd AM |
11781 | case ppc_stub_save_res: |
11782 | return TRUE; | |
11783 | ||
721956f4 AM |
11784 | default: |
11785 | BFD_FAIL (); | |
b34976b6 | 11786 | return FALSE; |
721956f4 AM |
11787 | } |
11788 | ||
1aa42141 | 11789 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11790 | |
e7d1c40c | 11791 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11792 | { |
11793 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11794 | size_t len1, len2; |
11795 | char *name; | |
11796 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11797 | "long_branch", |
11798 | "long_branch", | |
3f6ff479 AM |
11799 | "long_branch", |
11800 | "plt_branch", | |
ee75fd95 | 11801 | "plt_branch", |
05d0e962 AM |
11802 | "plt_branch", |
11803 | "plt_branch", | |
11804 | "plt_call", | |
11805 | "plt_call", | |
794e51c0 | 11806 | "plt_call", |
ee75fd95 AM |
11807 | "plt_call" }; |
11808 | ||
11809 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11810 | len2 = strlen (stub_entry->root.string); | |
11811 | name = bfd_malloc (len1 + len2 + 2); | |
11812 | if (name == NULL) | |
11813 | return FALSE; | |
11814 | memcpy (name, stub_entry->root.string, 9); | |
11815 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11816 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11817 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11818 | if (h == NULL) |
11819 | return FALSE; | |
11820 | if (h->root.type == bfd_link_hash_new) | |
11821 | { | |
11822 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11823 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11824 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11825 | h->ref_regular = 1; |
11826 | h->def_regular = 1; | |
11827 | h->ref_regular_nonweak = 1; | |
11828 | h->forced_local = 1; | |
11829 | h->non_elf = 0; | |
2ec55de3 | 11830 | h->root.linker_def = 1; |
97b639ba AM |
11831 | } |
11832 | } | |
11833 | ||
b34976b6 | 11834 | return TRUE; |
721956f4 AM |
11835 | } |
11836 | ||
11837 | /* As above, but don't actually build the stub. Just bump offset so | |
11838 | we know stub section sizes, and select plt_branch stubs where | |
11839 | long_branch stubs won't do. */ | |
11840 | ||
b34976b6 | 11841 | static bfd_boolean |
4ce794b7 | 11842 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11843 | { |
11844 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11845 | struct bfd_link_info *info; |
721956f4 | 11846 | struct ppc_link_hash_table *htab; |
f891966f AM |
11847 | asection *plt; |
11848 | bfd_vma targ, off, r2off; | |
04bdff6a | 11849 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
11850 | |
11851 | /* Massage our args to the form they really have. */ | |
11852 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11853 | info = in_arg; |
11854 | ||
11855 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11856 | if (htab == NULL) |
11857 | return FALSE; | |
721956f4 | 11858 | |
abf874aa CL |
11859 | /* Fail if the target section could not be assigned to an output |
11860 | section. The user should fix his linker script. */ | |
11861 | if (stub_entry->target_section != NULL | |
11862 | && stub_entry->target_section->output_section == NULL | |
11863 | && info->non_contiguous_regions) | |
53215f21 CL |
11864 | info->callbacks->einfo (_("%F%P: Could not assign %pA to an output section. " |
11865 | "Retry without --enable-non-contiguous-regions.\n"), | |
11866 | stub_entry->target_section); | |
abf874aa CL |
11867 | |
11868 | /* Same for the group. */ | |
11869 | if (stub_entry->group->stub_sec != NULL | |
11870 | && stub_entry->group->stub_sec->output_section == NULL | |
11871 | && info->non_contiguous_regions) | |
53215f21 CL |
11872 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11873 | "output section. Retry without " | |
11874 | "--enable-non-contiguous-regions.\n"), | |
11875 | stub_entry->group->stub_sec, | |
11876 | stub_entry->target_section); | |
abf874aa | 11877 | |
1aa42141 AM |
11878 | /* Make a note of the offset within the stubs for this entry. */ |
11879 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11880 | ||
a4b6fadd AM |
11881 | if (stub_entry->h != NULL |
11882 | && stub_entry->h->save_res | |
11883 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11884 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11885 | { | |
11886 | /* Don't make stubs to out-of-line register save/restore | |
11887 | functions. Instead, emit copies of the functions. */ | |
11888 | stub_entry->group->needs_save_res = 1; | |
11889 | stub_entry->stub_type = ppc_stub_save_res; | |
11890 | return TRUE; | |
11891 | } | |
11892 | ||
f891966f | 11893 | switch (stub_entry->stub_type) |
721956f4 | 11894 | { |
f891966f AM |
11895 | case ppc_stub_plt_branch: |
11896 | case ppc_stub_plt_branch_r2off: | |
11897 | /* Reset the stub type from the plt branch variant in case we now | |
11898 | can reach with a shorter stub. */ | |
11899 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11900 | /* Fall through. */ | |
11901 | case ppc_stub_long_branch: | |
11902 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
11903 | targ = (stub_entry->target_value |
11904 | + stub_entry->target_section->output_offset | |
11905 | + stub_entry->target_section->output_section->vma); | |
f891966f | 11906 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
11907 | off = (stub_entry->stub_offset |
11908 | + stub_entry->group->stub_sec->output_offset | |
11909 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11910 | |
ad8e1ba5 | 11911 | size = 4; |
f891966f | 11912 | r2off = 0; |
ad8e1ba5 AM |
11913 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
11914 | { | |
25f53a85 | 11915 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11916 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11917 | { |
11918 | htab->stub_error = TRUE; | |
11919 | return FALSE; | |
11920 | } | |
a7c49797 | 11921 | size = 8; |
ac2df442 | 11922 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11923 | size += 4; |
11924 | if (PPC_LO (r2off) != 0) | |
11925 | size += 4; | |
1aa42141 | 11926 | off += size - 4; |
ad8e1ba5 | 11927 | } |
1aa42141 | 11928 | off = targ - off; |
ad8e1ba5 | 11929 | |
f891966f AM |
11930 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
11931 | Do the same for -R objects without function descriptors. */ | |
11932 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11933 | && r2off == 0 | |
11934 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
11935 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 11936 | { |
f891966f | 11937 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 11938 | |
f891966f AM |
11939 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11940 | stub_entry->root.string + 9, | |
11941 | TRUE, FALSE); | |
11942 | if (br_entry == NULL) | |
721956f4 | 11943 | { |
f891966f AM |
11944 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11945 | stub_entry->root.string); | |
11946 | htab->stub_error = TRUE; | |
11947 | return FALSE; | |
721956f4 AM |
11948 | } |
11949 | ||
f891966f | 11950 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 11951 | { |
f891966f AM |
11952 | br_entry->iter = htab->stub_iteration; |
11953 | br_entry->offset = htab->brlt->size; | |
11954 | htab->brlt->size += 8; | |
63bc6f6c | 11955 | |
f891966f AM |
11956 | if (htab->relbrlt != NULL) |
11957 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
11958 | else if (info->emitrelocations) | |
84f5d08e | 11959 | { |
f891966f AM |
11960 | htab->brlt->reloc_count += 1; |
11961 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 11962 | } |
f891966f | 11963 | } |
ac2df442 | 11964 | |
f891966f AM |
11965 | targ = (br_entry->offset |
11966 | + htab->brlt->output_offset | |
11967 | + htab->brlt->output_section->vma); | |
11968 | off = (elf_gp (info->output_bfd) | |
11969 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11970 | off = targ - off; | |
176a0d42 | 11971 | |
f891966f AM |
11972 | if (info->emitrelocations) |
11973 | { | |
11974 | stub_entry->group->stub_sec->reloc_count | |
11975 | += 1 + (PPC_HA (off) != 0); | |
11976 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11977 | } | |
05d0e962 | 11978 | |
f891966f AM |
11979 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
11980 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
11981 | { | |
11982 | size = 12; | |
11983 | if (PPC_HA (off) != 0) | |
11984 | size = 16; | |
ac2df442 | 11985 | } |
f891966f | 11986 | else |
ac2df442 | 11987 | { |
f891966f AM |
11988 | size = 16; |
11989 | if (PPC_HA (off) != 0) | |
11990 | size += 4; | |
11991 | ||
11992 | if (PPC_HA (r2off) != 0) | |
11993 | size += 4; | |
11994 | if (PPC_LO (r2off) != 0) | |
11995 | size += 4; | |
ac2df442 | 11996 | } |
721956f4 | 11997 | } |
f891966f AM |
11998 | else if (info->emitrelocations) |
11999 | { | |
12000 | stub_entry->group->stub_sec->reloc_count += 1; | |
12001 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12002 | } | |
12003 | break; | |
12004 | ||
12005 | case ppc_stub_plt_branch_notoc: | |
12006 | case ppc_stub_plt_branch_both: | |
12007 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12008 | /* Fall through. */ | |
12009 | case ppc_stub_long_branch_notoc: | |
12010 | case ppc_stub_long_branch_both: | |
12011 | off = (stub_entry->stub_offset | |
12012 | + stub_entry->group->stub_sec->output_offset | |
12013 | + stub_entry->group->stub_sec->output_section->vma); | |
12014 | size = 0; | |
12015 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12016 | size = 4; | |
12017 | off += size; | |
12018 | targ = (stub_entry->target_value | |
12019 | + stub_entry->target_section->output_offset | |
12020 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12021 | odd = off & 4; |
f891966f AM |
12022 | off = targ - off; |
12023 | ||
3d58e1fc AM |
12024 | if (info->emitrelocations) |
12025 | { | |
04bdff6a | 12026 | unsigned int num_rel; |
7c1f4227 AM |
12027 | if (htab->power10_stubs) |
12028 | num_rel = num_relocs_for_power10_offset (off, odd); | |
04bdff6a AM |
12029 | else |
12030 | num_rel = num_relocs_for_offset (off - 8); | |
12031 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12032 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12033 | } | |
12034 | ||
7c1f4227 AM |
12035 | if (htab->power10_stubs) |
12036 | extra = size_power10_offset (off, odd); | |
04bdff6a AM |
12037 | else |
12038 | extra = size_offset (off - 8); | |
f891966f AM |
12039 | /* Include branch insn plus those in the offset sequence. */ |
12040 | size += 4 + extra; | |
12041 | /* The branch insn is at the end, or "extra" bytes along. So | |
12042 | its offset will be "extra" bytes less that that already | |
12043 | calculated. */ | |
12044 | off -= extra; | |
12045 | ||
7c1f4227 | 12046 | if (!htab->power10_stubs) |
04bdff6a AM |
12047 | { |
12048 | /* After the bcl, lr has been modified so we need to emit | |
12049 | .eh_frame info saying the return address is in r12. */ | |
12050 | lr_used = stub_entry->stub_offset + 8; | |
12051 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12052 | lr_used += 4; | |
12053 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12054 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12055 | DW_CFA_restore_extended 65. */ | |
12056 | delta = lr_used - stub_entry->group->lr_restore; | |
12057 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12058 | stub_entry->group->lr_restore = lr_used + 8; | |
12059 | } | |
f891966f AM |
12060 | |
12061 | /* If the branch can't reach, use a plt_branch. */ | |
12062 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
12063 | { | |
12064 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
12065 | - ppc_stub_long_branch_notoc); | |
12066 | size += 4; | |
12067 | } | |
3d58e1fc AM |
12068 | else if (info->emitrelocations) |
12069 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
12070 | break; |
12071 | ||
12072 | case ppc_stub_plt_call_notoc: | |
12073 | case ppc_stub_plt_call_both: | |
12074 | off = (stub_entry->stub_offset | |
12075 | + stub_entry->group->stub_sec->output_offset | |
12076 | + stub_entry->group->stub_sec->output_section->vma); | |
12077 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12078 | off += 4; | |
12079 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
12080 | if (targ >= (bfd_vma) -2) | |
12081 | abort (); | |
12082 | ||
12083 | plt = htab->elf.splt; | |
12084 | if (!htab->elf.dynamic_sections_created | |
12085 | || stub_entry->h == NULL | |
12086 | || stub_entry->h->elf.dynindx == -1) | |
12087 | { | |
12088 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12089 | plt = htab->elf.iplt; | |
12090 | else | |
12091 | plt = htab->pltlocal; | |
12092 | } | |
12093 | targ += plt->output_offset + plt->output_section->vma; | |
04bdff6a | 12094 | odd = off & 4; |
f891966f AM |
12095 | off = targ - off; |
12096 | ||
12097 | if (htab->params->plt_stub_align != 0) | |
12098 | { | |
12099 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
12100 | ||
12101 | stub_entry->group->stub_sec->size += pad; | |
12102 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12103 | off -= pad; | |
12104 | } | |
12105 | ||
3d58e1fc AM |
12106 | if (info->emitrelocations) |
12107 | { | |
04bdff6a | 12108 | unsigned int num_rel; |
7c1f4227 AM |
12109 | if (htab->power10_stubs) |
12110 | num_rel = num_relocs_for_power10_offset (off, odd); | |
04bdff6a AM |
12111 | else |
12112 | num_rel = num_relocs_for_offset (off - 8); | |
12113 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12114 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12115 | } | |
12116 | ||
f891966f AM |
12117 | size = plt_stub_size (htab, stub_entry, off); |
12118 | ||
7c1f4227 | 12119 | if (!htab->power10_stubs) |
04bdff6a AM |
12120 | { |
12121 | /* After the bcl, lr has been modified so we need to emit | |
12122 | .eh_frame info saying the return address is in r12. */ | |
12123 | lr_used = stub_entry->stub_offset + 8; | |
12124 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12125 | lr_used += 4; | |
12126 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12127 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12128 | DW_CFA_restore_extended 65. */ | |
12129 | delta = lr_used - stub_entry->group->lr_restore; | |
12130 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12131 | stub_entry->group->lr_restore = lr_used + 8; | |
12132 | } | |
f891966f AM |
12133 | break; |
12134 | ||
12135 | case ppc_stub_plt_call: | |
12136 | case ppc_stub_plt_call_r2save: | |
12137 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
12138 | if (targ >= (bfd_vma) -2) | |
12139 | abort (); | |
12140 | plt = htab->elf.splt; | |
12141 | if (!htab->elf.dynamic_sections_created | |
12142 | || stub_entry->h == NULL | |
12143 | || stub_entry->h->elf.dynindx == -1) | |
12144 | { | |
12145 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12146 | plt = htab->elf.iplt; | |
12147 | else | |
12148 | plt = htab->pltlocal; | |
12149 | } | |
12150 | targ += plt->output_offset + plt->output_section->vma; | |
12151 | ||
12152 | off = (elf_gp (info->output_bfd) | |
12153 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12154 | off = targ - off; | |
12155 | ||
12156 | if (htab->params->plt_stub_align != 0) | |
12157 | { | |
12158 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
12159 | ||
12160 | stub_entry->group->stub_sec->size += pad; | |
12161 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12162 | } | |
12163 | ||
12164 | if (info->emitrelocations) | |
12165 | { | |
12166 | stub_entry->group->stub_sec->reloc_count | |
12167 | += ((PPC_HA (off) != 0) | |
12168 | + (htab->opd_abi | |
12169 | ? 2 + (htab->params->plt_static_chain | |
12170 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12171 | : 1)); | |
12172 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12173 | } | |
12174 | ||
12175 | size = plt_stub_size (htab, stub_entry, off); | |
12176 | ||
12177 | if (stub_entry->h != NULL | |
ed7007c1 | 12178 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
f891966f AM |
12179 | && htab->params->tls_get_addr_opt |
12180 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
12181 | { | |
9e7028aa AM |
12182 | if (htab->params->no_tls_get_addr_regsave) |
12183 | { | |
12184 | lr_used = stub_entry->stub_offset + size - 20; | |
12185 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
12186 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12187 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12188 | delta = lr_used - stub_entry->group->lr_restore; | |
12189 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12190 | } | |
12191 | else | |
12192 | { | |
12193 | /* Adjustments to r1 need to be described. */ | |
12194 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12195 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12196 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12197 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12198 | } | |
f891966f AM |
12199 | stub_entry->group->lr_restore = size - 4; |
12200 | } | |
12201 | break; | |
12202 | ||
12203 | default: | |
12204 | BFD_FAIL (); | |
12205 | return FALSE; | |
721956f4 AM |
12206 | } |
12207 | ||
6f20ed8a | 12208 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 12209 | return TRUE; |
721956f4 AM |
12210 | } |
12211 | ||
12212 | /* Set up various things so that we can make a list of input sections | |
12213 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12214 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12215 | |
12216 | int | |
e7d1c40c | 12217 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12218 | { |
6f20ed8a | 12219 | unsigned int id; |
986f0783 | 12220 | size_t amt; |
721956f4 AM |
12221 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12222 | ||
4dfe6ac6 NC |
12223 | if (htab == NULL) |
12224 | return -1; | |
4c52953f | 12225 | |
7cf7fcc8 | 12226 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12227 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12228 | htab->sec_info = bfd_zmalloc (amt); | |
12229 | if (htab->sec_info == NULL) | |
721956f4 AM |
12230 | return -1; |
12231 | ||
3d6f9012 AM |
12232 | /* Set toc_off for com, und, abs and ind sections. */ |
12233 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12234 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12235 | |
721956f4 AM |
12236 | return 1; |
12237 | } | |
12238 | ||
927be08e AM |
12239 | /* Set up for first pass at multitoc partitioning. */ |
12240 | ||
12241 | void | |
12242 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12243 | { | |
12244 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12245 | ||
1c865ab2 | 12246 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12247 | htab->toc_bfd = NULL; |
12248 | htab->toc_first_sec = NULL; | |
12249 | } | |
12250 | ||
e717da7e AM |
12251 | /* The linker repeatedly calls this function for each TOC input section |
12252 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12253 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12254 | |
927be08e | 12255 | bfd_boolean |
4ce794b7 | 12256 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12257 | { |
12258 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12259 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12260 | |
4dfe6ac6 NC |
12261 | if (htab == NULL) |
12262 | return FALSE; | |
12263 | ||
927be08e | 12264 | if (!htab->second_toc_pass) |
4c52953f | 12265 | { |
927be08e | 12266 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
12267 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
12268 | ||
12269 | if (new_bfd) | |
bf102f86 AM |
12270 | { |
12271 | htab->toc_bfd = isec->owner; | |
12272 | htab->toc_first_sec = isec; | |
12273 | } | |
927be08e | 12274 | |
bf102f86 AM |
12275 | addr = isec->output_offset + isec->output_section->vma; |
12276 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12277 | limit = 0x80008000; |
12278 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12279 | limit = 0x10000; | |
12280 | if (off + isec->size > limit) | |
bf102f86 AM |
12281 | { |
12282 | addr = (htab->toc_first_sec->output_offset | |
12283 | + htab->toc_first_sec->output_section->vma); | |
12284 | htab->toc_curr = addr; | |
a27e685f | 12285 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12286 | } |
99877b66 | 12287 | |
927be08e AM |
12288 | /* toc_curr is the base address of this toc group. Set elf_gp |
12289 | for the input section to be the offset relative to the | |
12290 | output toc base plus 0x8000. Making the input elf_gp an | |
12291 | offset allows us to move the toc as a whole without | |
12292 | recalculating input elf_gp. */ | |
06bcf541 | 12293 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12294 | off += TOC_BASE_OFF; |
12295 | ||
12296 | /* Die if someone uses a linker script that doesn't keep input | |
12297 | file .toc and .got together. */ | |
a4fd3de5 AM |
12298 | if (new_bfd |
12299 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
12300 | && elf_gp (isec->owner) != off) |
12301 | return FALSE; | |
12302 | ||
12303 | elf_gp (isec->owner) = off; | |
12304 | return TRUE; | |
4c52953f | 12305 | } |
927be08e AM |
12306 | |
12307 | /* During the second pass toc_first_sec points to the start of | |
12308 | a toc group, and toc_curr is used to track the old elf_gp. | |
12309 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12310 | if (htab->toc_bfd == isec->owner) | |
12311 | return TRUE; | |
12312 | htab->toc_bfd = isec->owner; | |
12313 | ||
12314 | if (htab->toc_first_sec == NULL | |
12315 | || htab->toc_curr != elf_gp (isec->owner)) | |
12316 | { | |
12317 | htab->toc_curr = elf_gp (isec->owner); | |
12318 | htab->toc_first_sec = isec; | |
12319 | } | |
12320 | addr = (htab->toc_first_sec->output_offset | |
12321 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12322 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12323 | elf_gp (isec->owner) = off; |
12324 | ||
12325 | return TRUE; | |
ad8e1ba5 AM |
12326 | } |
12327 | ||
927be08e AM |
12328 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12329 | symbol H. */ | |
12330 | ||
12331 | static bfd_boolean | |
12332 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12333 | { | |
12334 | if (h->root.type == bfd_link_hash_indirect) | |
12335 | return TRUE; | |
12336 | ||
927be08e AM |
12337 | merge_got_entries (&h->got.glist); |
12338 | ||
12339 | return TRUE; | |
12340 | } | |
12341 | ||
12342 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12343 | symbol H. */ | |
12344 | ||
12345 | static bfd_boolean | |
12346 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
12347 | { | |
12348 | struct got_entry *gent; | |
12349 | ||
12350 | if (h->root.type == bfd_link_hash_indirect) | |
12351 | return TRUE; | |
12352 | ||
927be08e AM |
12353 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12354 | if (!gent->is_indirect) | |
12355 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
12356 | return TRUE; | |
12357 | } | |
12358 | ||
12359 | /* Called on the first multitoc pass after the last call to | |
12360 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12361 | entries. */ | |
12362 | ||
12363 | bfd_boolean | |
12364 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
12365 | { |
12366 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
12367 | struct bfd *ibfd, *ibfd2; |
12368 | bfd_boolean done_something; | |
12369 | ||
12370 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12371 | |
7865406b AM |
12372 | if (!htab->do_multi_toc) |
12373 | return FALSE; | |
12374 | ||
d0fae19d | 12375 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12376 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12377 | ||
12378 | /* And tlsld_got. */ | |
c72f2fb2 | 12379 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12380 | { |
12381 | struct got_entry *ent, *ent2; | |
12382 | ||
12383 | if (!is_ppc64_elf (ibfd)) | |
12384 | continue; | |
12385 | ||
12386 | ent = ppc64_tlsld_got (ibfd); | |
12387 | if (!ent->is_indirect | |
12388 | && ent->got.offset != (bfd_vma) -1) | |
12389 | { | |
c72f2fb2 | 12390 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12391 | { |
12392 | if (!is_ppc64_elf (ibfd2)) | |
12393 | continue; | |
12394 | ||
12395 | ent2 = ppc64_tlsld_got (ibfd2); | |
12396 | if (!ent2->is_indirect | |
12397 | && ent2->got.offset != (bfd_vma) -1 | |
12398 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12399 | { | |
12400 | ent2->is_indirect = TRUE; | |
12401 | ent2->got.ent = ent; | |
12402 | } | |
12403 | } | |
12404 | } | |
12405 | } | |
12406 | ||
12407 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12408 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12409 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12410 | htab->got_reli_size = 0; |
12411 | ||
c72f2fb2 | 12412 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12413 | { |
12414 | asection *got, *relgot; | |
12415 | ||
12416 | if (!is_ppc64_elf (ibfd)) | |
12417 | continue; | |
12418 | ||
12419 | got = ppc64_elf_tdata (ibfd)->got; | |
12420 | if (got != NULL) | |
12421 | { | |
12422 | got->rawsize = got->size; | |
12423 | got->size = 0; | |
12424 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12425 | relgot->rawsize = relgot->size; | |
12426 | relgot->size = 0; | |
12427 | } | |
12428 | } | |
12429 | ||
12430 | /* Now reallocate the got, local syms first. We don't need to | |
12431 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12432 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12433 | { |
12434 | struct got_entry **lgot_ents; | |
12435 | struct got_entry **end_lgot_ents; | |
12436 | struct plt_entry **local_plt; | |
12437 | struct plt_entry **end_local_plt; | |
f961d9dd | 12438 | unsigned char *lgot_masks; |
927be08e AM |
12439 | bfd_size_type locsymcount; |
12440 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12441 | asection *s; |
927be08e AM |
12442 | |
12443 | if (!is_ppc64_elf (ibfd)) | |
12444 | continue; | |
12445 | ||
12446 | lgot_ents = elf_local_got_ents (ibfd); | |
12447 | if (!lgot_ents) | |
12448 | continue; | |
12449 | ||
12450 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12451 | locsymcount = symtab_hdr->sh_info; | |
12452 | end_lgot_ents = lgot_ents + locsymcount; | |
12453 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12454 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12455 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12456 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12457 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12458 | { | |
12459 | struct got_entry *ent; | |
12460 | ||
12461 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12462 | { |
19e08130 AM |
12463 | unsigned int ent_size = 8; |
12464 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12465 | ||
d0fae19d AM |
12466 | ent->got.offset = s->size; |
12467 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12468 | { |
19e08130 AM |
12469 | ent_size *= 2; |
12470 | rel_size *= 2; | |
12471 | } | |
12472 | s->size += ent_size; | |
37da22e5 | 12473 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12474 | { |
33e44f2e | 12475 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12476 | htab->got_reli_size += rel_size; |
12477 | } | |
6a3858a6 | 12478 | else if (bfd_link_pic (info) |
f749f26e | 12479 | && !(ent->tls_type != 0 |
6a3858a6 | 12480 | && bfd_link_executable (info))) |
19e08130 AM |
12481 | { |
12482 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12483 | srel->size += rel_size; | |
d0fae19d AM |
12484 | } |
12485 | } | |
927be08e AM |
12486 | } |
12487 | } | |
12488 | ||
12489 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12490 | ||
c72f2fb2 | 12491 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12492 | { |
12493 | struct got_entry *ent; | |
12494 | ||
12495 | if (!is_ppc64_elf (ibfd)) | |
12496 | continue; | |
12497 | ||
12498 | ent = ppc64_tlsld_got (ibfd); | |
12499 | if (!ent->is_indirect | |
12500 | && ent->got.offset != (bfd_vma) -1) | |
12501 | { | |
12502 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12503 | ent->got.offset = s->size; | |
12504 | s->size += 16; | |
f749f26e | 12505 | if (bfd_link_dll (info)) |
927be08e AM |
12506 | { |
12507 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12508 | srel->size += sizeof (Elf64_External_Rela); | |
12509 | } | |
12510 | } | |
12511 | } | |
12512 | ||
33e44f2e | 12513 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12514 | if (!done_something) |
c72f2fb2 | 12515 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12516 | { |
12517 | asection *got; | |
12518 | ||
12519 | if (!is_ppc64_elf (ibfd)) | |
12520 | continue; | |
12521 | ||
12522 | got = ppc64_elf_tdata (ibfd)->got; | |
12523 | if (got != NULL) | |
12524 | { | |
12525 | done_something = got->rawsize != got->size; | |
12526 | if (done_something) | |
12527 | break; | |
12528 | } | |
12529 | } | |
12530 | ||
12531 | if (done_something) | |
e7d1c40c | 12532 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12533 | |
12534 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12535 | on input sections. */ | |
12536 | htab->toc_bfd = NULL; | |
12537 | htab->toc_first_sec = NULL; | |
12538 | htab->second_toc_pass = TRUE; | |
12539 | return done_something; | |
12540 | } | |
12541 | ||
12542 | /* Called after second pass of multitoc partitioning. */ | |
12543 | ||
12544 | void | |
12545 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12546 | { | |
12547 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12548 | ||
12549 | /* After the second pass, toc_curr tracks the TOC offset used | |
12550 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12551 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12552 | } |
12553 | ||
9b5ecbd0 AM |
12554 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12555 | calls, then there's no need to use toc adjusting stubs when branching | |
12556 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12557 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12558 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12559 | for a stub was detected. If called from the top level, a return of | |
12560 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12561 | |
12562 | static int | |
4ce794b7 | 12563 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12564 | { |
9b5ecbd0 | 12565 | int ret; |
70cc837d AM |
12566 | |
12567 | /* Mark this section as checked. */ | |
12568 | isec->call_check_done = 1; | |
9b5ecbd0 | 12569 | |
772119ce AM |
12570 | /* We know none of our code bearing sections will need toc stubs. */ |
12571 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12572 | return 0; | |
12573 | ||
eea6121a | 12574 | if (isec->size == 0) |
082c50f8 AM |
12575 | return 0; |
12576 | ||
4c52953f AM |
12577 | if (isec->output_section == NULL) |
12578 | return 0; | |
12579 | ||
4c52953f | 12580 | ret = 0; |
70cc837d | 12581 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12582 | { |
70cc837d AM |
12583 | Elf_Internal_Rela *relstart, *rel; |
12584 | Elf_Internal_Sym *local_syms; | |
12585 | struct ppc_link_hash_table *htab; | |
2917689a | 12586 | |
70cc837d AM |
12587 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12588 | info->keep_memory); | |
12589 | if (relstart == NULL) | |
12590 | return -1; | |
90aecf7a | 12591 | |
70cc837d AM |
12592 | /* Look for branches to outside of this section. */ |
12593 | local_syms = NULL; | |
12594 | htab = ppc_hash_table (info); | |
12595 | if (htab == NULL) | |
12596 | return -1; | |
4c52953f | 12597 | |
70cc837d | 12598 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12599 | { |
70cc837d AM |
12600 | enum elf_ppc64_reloc_type r_type; |
12601 | unsigned long r_symndx; | |
12602 | struct elf_link_hash_entry *h; | |
12603 | struct ppc_link_hash_entry *eh; | |
12604 | Elf_Internal_Sym *sym; | |
12605 | asection *sym_sec; | |
12606 | struct _opd_sec_data *opd; | |
12607 | bfd_vma sym_value; | |
12608 | bfd_vma dest; | |
12609 | ||
12610 | r_type = ELF64_R_TYPE (rel->r_info); | |
12611 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12612 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12613 | && r_type != R_PPC64_REL14 |
12614 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12615 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12616 | && r_type != R_PPC64_PLTCALL |
12617 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12618 | continue; |
4c52953f | 12619 | |
70cc837d AM |
12620 | r_symndx = ELF64_R_SYM (rel->r_info); |
12621 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12622 | isec->owner)) | |
4c52953f | 12623 | { |
70cc837d AM |
12624 | ret = -1; |
12625 | break; | |
12626 | } | |
4c52953f | 12627 | |
70cc837d AM |
12628 | /* Calls to dynamic lib functions go through a plt call stub |
12629 | that uses r2. */ | |
ed7007c1 | 12630 | eh = ppc_elf_hash_entry (h); |
70cc837d AM |
12631 | if (eh != NULL |
12632 | && (eh->elf.plt.plist != NULL | |
12633 | || (eh->oh != NULL | |
12634 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12635 | { | |
12636 | ret = 1; | |
12637 | break; | |
4c52953f AM |
12638 | } |
12639 | ||
70cc837d AM |
12640 | if (sym_sec == NULL) |
12641 | /* Ignore other undefined symbols. */ | |
4c52953f | 12642 | continue; |
4c52953f | 12643 | |
70cc837d AM |
12644 | /* Assume branches to other sections not included in the |
12645 | link need stubs too, to cover -R and absolute syms. */ | |
12646 | if (sym_sec->output_section == NULL) | |
12647 | { | |
12648 | ret = 1; | |
12649 | break; | |
12650 | } | |
4c52953f | 12651 | |
70cc837d AM |
12652 | if (h == NULL) |
12653 | sym_value = sym->st_value; | |
12654 | else | |
12655 | { | |
12656 | if (h->root.type != bfd_link_hash_defined | |
12657 | && h->root.type != bfd_link_hash_defweak) | |
12658 | abort (); | |
12659 | sym_value = h->root.u.def.value; | |
12660 | } | |
12661 | sym_value += rel->r_addend; | |
4c52953f | 12662 | |
70cc837d AM |
12663 | /* If this branch reloc uses an opd sym, find the code section. */ |
12664 | opd = get_opd_info (sym_sec); | |
12665 | if (opd != NULL) | |
12666 | { | |
12667 | if (h == NULL && opd->adjust != NULL) | |
12668 | { | |
12669 | long adjust; | |
4c52953f | 12670 | |
92a9c616 | 12671 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12672 | if (adjust == -1) |
12673 | /* Assume deleted functions won't ever be called. */ | |
12674 | continue; | |
12675 | sym_value += adjust; | |
12676 | } | |
4c52953f | 12677 | |
aef36ac1 AM |
12678 | dest = opd_entry_value (sym_sec, sym_value, |
12679 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12680 | if (dest == (bfd_vma) -1) |
12681 | continue; | |
12682 | } | |
12683 | else | |
12684 | dest = (sym_value | |
12685 | + sym_sec->output_offset | |
12686 | + sym_sec->output_section->vma); | |
4c52953f | 12687 | |
70cc837d AM |
12688 | /* Ignore branch to self. */ |
12689 | if (sym_sec == isec) | |
12690 | continue; | |
4c52953f | 12691 | |
70cc837d AM |
12692 | /* If the called function uses the toc, we need a stub. */ |
12693 | if (sym_sec->has_toc_reloc | |
12694 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12695 | { |
70cc837d | 12696 | ret = 1; |
4c52953f AM |
12697 | break; |
12698 | } | |
70cc837d AM |
12699 | |
12700 | /* Assume any branch that needs a long branch stub might in fact | |
12701 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12702 | else if (dest - (isec->output_offset | |
12703 | + isec->output_section->vma | |
6911b7dc AM |
12704 | + rel->r_offset) + (1 << 25) |
12705 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12706 | ? h->other | |
12707 | : sym->st_other)) | |
4c52953f | 12708 | { |
70cc837d AM |
12709 | ret = 1; |
12710 | break; | |
12711 | } | |
12712 | ||
12713 | /* If calling back to a section in the process of being | |
12714 | tested, we can't say for sure that no toc adjusting stubs | |
12715 | are needed, so don't return zero. */ | |
12716 | else if (sym_sec->call_check_in_progress) | |
12717 | ret = 2; | |
12718 | ||
12719 | /* Branches to another section that itself doesn't have any TOC | |
12720 | references are OK. Recursively call ourselves to check. */ | |
12721 | else if (!sym_sec->call_check_done) | |
12722 | { | |
12723 | int recur; | |
12724 | ||
12725 | /* Mark current section as indeterminate, so that other | |
12726 | sections that call back to current won't be marked as | |
12727 | known. */ | |
12728 | isec->call_check_in_progress = 1; | |
12729 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12730 | isec->call_check_in_progress = 0; | |
12731 | ||
4c52953f AM |
12732 | if (recur != 0) |
12733 | { | |
70cc837d AM |
12734 | ret = recur; |
12735 | if (recur != 2) | |
12736 | break; | |
4c52953f AM |
12737 | } |
12738 | } | |
4c52953f | 12739 | } |
70cc837d | 12740 | |
c9594989 AM |
12741 | if (elf_symtab_hdr (isec->owner).contents |
12742 | != (unsigned char *) local_syms) | |
70cc837d AM |
12743 | free (local_syms); |
12744 | if (elf_section_data (isec)->relocs != relstart) | |
12745 | free (relstart); | |
9b5ecbd0 AM |
12746 | } |
12747 | ||
70cc837d AM |
12748 | if ((ret & 1) == 0 |
12749 | && isec->map_head.s != NULL | |
12750 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12751 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12752 | { | |
12753 | if (isec->map_head.s->has_toc_reloc | |
12754 | || isec->map_head.s->makes_toc_func_call) | |
12755 | ret = 1; | |
12756 | else if (!isec->map_head.s->call_check_done) | |
12757 | { | |
12758 | int recur; | |
12759 | isec->call_check_in_progress = 1; | |
12760 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12761 | isec->call_check_in_progress = 0; | |
12762 | if (recur != 0) | |
12763 | ret = recur; | |
12764 | } | |
12765 | } | |
12766 | ||
12767 | if (ret == 1) | |
12768 | isec->makes_toc_func_call = 1; | |
4c52953f | 12769 | |
9b5ecbd0 AM |
12770 | return ret; |
12771 | } | |
12772 | ||
721956f4 AM |
12773 | /* The linker repeatedly calls this function for each input section, |
12774 | in the order that input sections are linked into output sections. | |
12775 | Build lists of input sections to determine groupings between which | |
12776 | we may insert linker stubs. */ | |
12777 | ||
9b5ecbd0 | 12778 | bfd_boolean |
4ce794b7 | 12779 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12780 | { |
12781 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12782 | ||
4dfe6ac6 NC |
12783 | if (htab == NULL) |
12784 | return FALSE; | |
12785 | ||
734b6cf9 | 12786 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12787 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12788 | { |
3d6f9012 AM |
12789 | /* This happens to make the list in reverse order, |
12790 | which is what we want. */ | |
6f20ed8a AM |
12791 | htab->sec_info[isec->id].u.list |
12792 | = htab->sec_info[isec->output_section->id].u.list; | |
12793 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12794 | } |
ad8e1ba5 | 12795 | |
4c52953f | 12796 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12797 | { |
8b974ba3 AM |
12798 | /* Analyse sections that aren't already flagged as needing a |
12799 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12800 | .fixup contains branches, but only back to the function that | |
12801 | hit an exception. */ | |
12802 | if (!(isec->has_toc_reloc | |
12803 | || (isec->flags & SEC_CODE) == 0 | |
12804 | || strcmp (isec->name, ".fixup") == 0 | |
12805 | || isec->call_check_done)) | |
12806 | { | |
12807 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12808 | return FALSE; |
8b974ba3 AM |
12809 | } |
12810 | /* Make all sections use the TOC assigned for this object file. | |
12811 | This will be wrong for pasted sections; We fix that in | |
12812 | check_pasted_section(). */ | |
12813 | if (elf_gp (isec->owner) != 0) | |
12814 | htab->toc_curr = elf_gp (isec->owner); | |
12815 | } | |
12816 | ||
6f20ed8a | 12817 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12818 | return TRUE; |
721956f4 AM |
12819 | } |
12820 | ||
70cc837d AM |
12821 | /* Check that all .init and .fini sections use the same toc, if they |
12822 | have toc relocs. */ | |
12823 | ||
12824 | static bfd_boolean | |
12825 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12826 | { | |
12827 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12828 | ||
12829 | if (o != NULL) | |
12830 | { | |
12831 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12832 | bfd_vma toc_off = 0; | |
12833 | asection *i; | |
12834 | ||
12835 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12836 | if (i->has_toc_reloc) | |
12837 | { | |
12838 | if (toc_off == 0) | |
6f20ed8a AM |
12839 | toc_off = htab->sec_info[i->id].toc_off; |
12840 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12841 | return FALSE; |
12842 | } | |
6683a28d AM |
12843 | |
12844 | if (toc_off == 0) | |
12845 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12846 | if (i->makes_toc_func_call) | |
12847 | { | |
6f20ed8a | 12848 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12849 | break; |
12850 | } | |
12851 | ||
70cc837d AM |
12852 | /* Make sure the whole pasted function uses the same toc offset. */ |
12853 | if (toc_off != 0) | |
12854 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12855 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12856 | } |
12857 | return TRUE; | |
12858 | } | |
12859 | ||
12860 | bfd_boolean | |
12861 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12862 | { | |
12863 | return (check_pasted_section (info, ".init") | |
12864 | & check_pasted_section (info, ".fini")); | |
12865 | } | |
12866 | ||
721956f4 AM |
12867 | /* See whether we can group stub sections together. Grouping stub |
12868 | sections may result in fewer stubs. More importantly, we need to | |
12869 | put all .init* and .fini* stubs at the beginning of the .init or | |
12870 | .fini output sections respectively, because glibc splits the | |
12871 | _init and _fini functions into multiple parts. Putting a stub in | |
12872 | the middle of a function is not a good idea. */ | |
12873 | ||
6f20ed8a AM |
12874 | static bfd_boolean |
12875 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12876 | bfd_size_type stub_group_size, |
12877 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12878 | { |
6f20ed8a AM |
12879 | struct ppc_link_hash_table *htab; |
12880 | asection *osec; | |
7c8fe5c4 AM |
12881 | bfd_boolean suppress_size_errors; |
12882 | ||
6f20ed8a AM |
12883 | htab = ppc_hash_table (info); |
12884 | if (htab == NULL) | |
12885 | return FALSE; | |
12886 | ||
7c8fe5c4 | 12887 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12888 | if (stub_group_size == 1) |
12889 | { | |
12890 | /* Default values. */ | |
12891 | if (stubs_always_before_branch) | |
09f92717 | 12892 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12893 | else |
09f92717 | 12894 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12895 | suppress_size_errors = TRUE; |
12896 | } | |
12897 | ||
6f20ed8a | 12898 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12899 | { |
6f20ed8a AM |
12900 | asection *tail; |
12901 | ||
12902 | if (osec->id >= htab->sec_info_arr_size) | |
12903 | continue; | |
12904 | ||
12905 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12906 | while (tail != NULL) |
721956f4 | 12907 | { |
734b6cf9 AM |
12908 | asection *curr; |
12909 | asection *prev; | |
12910 | bfd_size_type total; | |
12911 | bfd_boolean big_sec; | |
12912 | bfd_vma curr_toc; | |
6f20ed8a | 12913 | struct map_stub *group; |
09f92717 | 12914 | bfd_size_type group_size; |
734b6cf9 AM |
12915 | |
12916 | curr = tail; | |
eea6121a | 12917 | total = tail->size; |
09f92717 AM |
12918 | group_size = (ppc64_elf_section_data (tail) != NULL |
12919 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12920 | ? stub_group_size >> 10 : stub_group_size); | |
12921 | ||
12922 | big_sec = total > group_size; | |
7c8fe5c4 | 12923 | if (big_sec && !suppress_size_errors) |
695344c0 | 12924 | /* xgettext:c-format */ |
871b3ab2 | 12925 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12926 | tail->owner, tail); |
6f20ed8a | 12927 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12928 | |
6f20ed8a | 12929 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12930 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12931 | < (ppc64_elf_section_data (prev) != NULL |
12932 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12933 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12934 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12935 | curr = prev; |
12936 | ||
12937 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12938 | than group_size and thus can be handled by one stub |
734b6cf9 | 12939 | section. (or the tail section is itself larger than |
09f92717 AM |
12940 | group_size, in which case we may be toast.) We should |
12941 | really be keeping track of the total size of stubs added | |
12942 | here, as stubs contribute to the final output section | |
12943 | size. That's a little tricky, and this way will only | |
12944 | break if stubs added make the total size more than 2^25, | |
12945 | ie. for the default stub_group_size, if stubs total more | |
12946 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12947 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12948 | if (group == NULL) | |
12949 | return FALSE; | |
12950 | group->link_sec = curr; | |
12951 | group->stub_sec = NULL; | |
a4b6fadd | 12952 | group->needs_save_res = 0; |
df136d64 AM |
12953 | group->lr_restore = 0; |
12954 | group->eh_size = 0; | |
12955 | group->eh_base = 0; | |
a4b6fadd AM |
12956 | group->next = htab->group; |
12957 | htab->group = group; | |
734b6cf9 | 12958 | do |
721956f4 | 12959 | { |
6f20ed8a | 12960 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12961 | /* Set up this stub group. */ |
6f20ed8a | 12962 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12963 | } |
734b6cf9 AM |
12964 | while (tail != curr && (tail = prev) != NULL); |
12965 | ||
09f92717 | 12966 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12967 | bytes before the stub section can be handled by it too. |
12968 | Don't do this if we have a really large section after the | |
12969 | stubs, as adding more stubs increases the chance that | |
12970 | branches may not reach into the stub section. */ | |
12971 | if (!stubs_always_before_branch && !big_sec) | |
12972 | { | |
12973 | total = 0; | |
12974 | while (prev != NULL | |
12975 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12976 | < (ppc64_elf_section_data (prev) != NULL |
12977 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
12978 | ? (group_size = stub_group_size >> 10) |
12979 | : group_size)) | |
6f20ed8a | 12980 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12981 | { |
12982 | tail = prev; | |
6f20ed8a AM |
12983 | prev = htab->sec_info[tail->id].u.list; |
12984 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12985 | } |
12986 | } | |
12987 | tail = prev; | |
721956f4 AM |
12988 | } |
12989 | } | |
6f20ed8a | 12990 | return TRUE; |
721956f4 AM |
12991 | } |
12992 | ||
58d180e8 AM |
12993 | static const unsigned char glink_eh_frame_cie[] = |
12994 | { | |
12995 | 0, 0, 0, 16, /* length. */ | |
12996 | 0, 0, 0, 0, /* id. */ | |
12997 | 1, /* CIE version. */ | |
12998 | 'z', 'R', 0, /* Augmentation string. */ | |
12999 | 4, /* Code alignment. */ | |
13000 | 0x78, /* Data alignment. */ | |
13001 | 65, /* RA reg. */ | |
13002 | 1, /* Augmentation size. */ | |
13003 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13004 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13005 | }; |
13006 | ||
d969d15f AM |
13007 | /* Stripping output sections is normally done before dynamic section |
13008 | symbols have been allocated. This function is called later, and | |
13009 | handles cases like htab->brlt which is mapped to its own output | |
13010 | section. */ | |
13011 | ||
13012 | static void | |
13013 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13014 | { | |
13015 | if (isec->size == 0 | |
13016 | && isec->output_section->size == 0 | |
53d8967a | 13017 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13018 | && !bfd_section_removed_from_list (info->output_bfd, |
13019 | isec->output_section) | |
13020 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13021 | { | |
13022 | isec->output_section->flags |= SEC_EXCLUDE; | |
13023 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13024 | info->output_bfd->section_count--; | |
13025 | } | |
13026 | } | |
13027 | ||
721956f4 AM |
13028 | /* Determine and set the size of the stub section for a final link. |
13029 | ||
13030 | The basic idea here is to examine all the relocations looking for | |
13031 | PC-relative calls to a target that is unreachable with a "bl" | |
13032 | instruction. */ | |
13033 | ||
b34976b6 | 13034 | bfd_boolean |
e7d1c40c | 13035 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13036 | { |
13037 | bfd_size_type stub_group_size; | |
b34976b6 | 13038 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
13039 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13040 | ||
4dfe6ac6 NC |
13041 | if (htab == NULL) |
13042 | return FALSE; | |
13043 | ||
0e1862bb | 13044 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13045 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13046 | if (!htab->opd_abi) |
e7d1c40c AM |
13047 | htab->params->plt_thread_safe = 0; |
13048 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13049 | { |
e2458743 | 13050 | static const char *const thread_starter[] = |
794e51c0 AM |
13051 | { |
13052 | "pthread_create", | |
13053 | /* libstdc++ */ | |
13054 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13055 | /* librt */ | |
13056 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13057 | "mq_notify", "create_timer", | |
13058 | /* libanl */ | |
13059 | "getaddrinfo_a", | |
13060 | /* libgomp */ | |
2300b5a1 | 13061 | "GOMP_parallel", |
794e51c0 | 13062 | "GOMP_parallel_start", |
2300b5a1 | 13063 | "GOMP_parallel_loop_static", |
794e51c0 | 13064 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13065 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13066 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13067 | "GOMP_parallel_loop_guided", |
794e51c0 | 13068 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13069 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13070 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13071 | "GOMP_parallel_sections", |
68ffbac6 | 13072 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13073 | /* libgo */ |
13074 | "__go_go", | |
794e51c0 AM |
13075 | }; |
13076 | unsigned i; | |
13077 | ||
a4b6fadd | 13078 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13079 | { |
13080 | struct elf_link_hash_entry *h; | |
13081 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
13082 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
13083 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13084 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13085 | break; |
13086 | } | |
13087 | } | |
e7d1c40c AM |
13088 | stubs_always_before_branch = htab->params->group_size < 0; |
13089 | if (htab->params->group_size < 0) | |
13090 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13091 | else |
e7d1c40c | 13092 | stub_group_size = htab->params->group_size; |
721956f4 | 13093 | |
6f20ed8a AM |
13094 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
13095 | return FALSE; | |
721956f4 | 13096 | |
a804e476 AM |
13097 | htab->tga_group = NULL; |
13098 | if (!htab->params->no_tls_get_addr_regsave | |
13099 | && htab->tga_desc_fd != NULL | |
13100 | && (htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefined | |
13101 | || htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefweak) | |
13102 | && htab->tls_get_addr_fd != NULL | |
13103 | && is_static_defined (&htab->tls_get_addr_fd->elf)) | |
13104 | { | |
13105 | asection *sym_sec, *code_sec, *stub_sec; | |
13106 | bfd_vma sym_value; | |
13107 | struct _opd_sec_data *opd; | |
13108 | ||
13109 | sym_sec = htab->tls_get_addr_fd->elf.root.u.def.section; | |
13110 | sym_value = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
13111 | code_sec = sym_sec; | |
13112 | opd = get_opd_info (sym_sec); | |
13113 | if (opd != NULL) | |
13114 | opd_entry_value (sym_sec, sym_value, &code_sec, NULL, FALSE); | |
13115 | htab->tga_group = htab->sec_info[code_sec->id].u.group; | |
13116 | stub_sec = (*htab->params->add_stub_section) (".tga_desc.stub", | |
13117 | htab->tga_group->link_sec); | |
13118 | if (stub_sec == NULL) | |
13119 | return FALSE; | |
13120 | htab->tga_group->stub_sec = stub_sec; | |
13121 | ||
13122 | htab->tga_desc_fd->elf.root.type = bfd_link_hash_defined; | |
13123 | htab->tga_desc_fd->elf.root.u.def.section = stub_sec; | |
13124 | htab->tga_desc_fd->elf.root.u.def.value = 0; | |
13125 | htab->tga_desc_fd->elf.type = STT_FUNC; | |
13126 | htab->tga_desc_fd->elf.def_regular = 1; | |
13127 | htab->tga_desc_fd->elf.non_elf = 0; | |
13128 | _bfd_elf_link_hash_hide_symbol (info, &htab->tga_desc_fd->elf, TRUE); | |
13129 | } | |
13130 | ||
c9301e31 AM |
13131 | #define STUB_SHRINK_ITER 20 |
13132 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
13133 | exit on a stub section shrinking. This is to break out of a | |
13134 | pathological case where adding stubs on one iteration decreases | |
13135 | section gaps (perhaps due to alignment), which then requires | |
13136 | fewer or smaller stubs on the next iteration. */ | |
13137 | ||
721956f4 AM |
13138 | while (1) |
13139 | { | |
13140 | bfd *input_bfd; | |
13141 | unsigned int bfd_indx; | |
a4b6fadd | 13142 | struct map_stub *group; |
721956f4 AM |
13143 | |
13144 | htab->stub_iteration += 1; | |
721956f4 AM |
13145 | |
13146 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13147 | input_bfd != NULL; | |
c72f2fb2 | 13148 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13149 | { |
13150 | Elf_Internal_Shdr *symtab_hdr; | |
13151 | asection *section; | |
6cdc0ccc | 13152 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13153 | |
0c8d6e5c | 13154 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13155 | continue; |
13156 | ||
721956f4 | 13157 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13158 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13159 | if (symtab_hdr->sh_info == 0) |
13160 | continue; | |
13161 | ||
721956f4 AM |
13162 | /* Walk over each section attached to the input bfd. */ |
13163 | for (section = input_bfd->sections; | |
13164 | section != NULL; | |
13165 | section = section->next) | |
13166 | { | |
721956f4 | 13167 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
13168 | |
13169 | /* If there aren't any relocs, then there's nothing more | |
13170 | to do. */ | |
13171 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13172 | || (section->flags & SEC_ALLOC) == 0 |
13173 | || (section->flags & SEC_LOAD) == 0 | |
13174 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
13175 | || section->reloc_count == 0) |
13176 | continue; | |
13177 | ||
13178 | /* If this section is a link-once section that will be | |
13179 | discarded, then don't create any stubs. */ | |
13180 | if (section->output_section == NULL | |
927be08e | 13181 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13182 | continue; |
13183 | ||
1e2f5b6e AM |
13184 | /* Get the relocs. */ |
13185 | internal_relocs | |
4ce794b7 | 13186 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13187 | info->keep_memory); |
721956f4 | 13188 | if (internal_relocs == NULL) |
1e2f5b6e | 13189 | goto error_ret_free_local; |
721956f4 AM |
13190 | |
13191 | /* Now examine each relocation. */ | |
13192 | irela = internal_relocs; | |
13193 | irelaend = irela + section->reloc_count; | |
13194 | for (; irela < irelaend; irela++) | |
13195 | { | |
4ce794b7 AM |
13196 | enum elf_ppc64_reloc_type r_type; |
13197 | unsigned int r_indx; | |
721956f4 AM |
13198 | enum ppc_stub_type stub_type; |
13199 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 13200 | asection *sym_sec, *code_sec; |
e054468f | 13201 | bfd_vma sym_value, code_value; |
721956f4 | 13202 | bfd_vma destination; |
6911b7dc | 13203 | unsigned long local_off; |
8843416a | 13204 | bfd_boolean ok_dest; |
721956f4 | 13205 | struct ppc_link_hash_entry *hash; |
8387904d | 13206 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13207 | struct elf_link_hash_entry *h; |
13208 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13209 | char *stub_name; |
13210 | const asection *id_sec; | |
74f0fb50 | 13211 | struct _opd_sec_data *opd; |
e054468f | 13212 | struct plt_entry *plt_ent; |
721956f4 AM |
13213 | |
13214 | r_type = ELF64_R_TYPE (irela->r_info); | |
13215 | r_indx = ELF64_R_SYM (irela->r_info); | |
13216 | ||
4ce794b7 | 13217 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13218 | { |
13219 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13220 | goto error_ret_free_internal; |
721956f4 AM |
13221 | } |
13222 | ||
13223 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 13224 | if (r_type != R_PPC64_REL24 |
05d0e962 | 13225 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
13226 | && r_type != R_PPC64_REL14 |
13227 | && r_type != R_PPC64_REL14_BRTAKEN | |
13228 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
13229 | continue; |
13230 | ||
13231 | /* Now determine the call target, its name, value, | |
13232 | section. */ | |
411e1bfb AM |
13233 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13234 | r_indx, input_bfd)) | |
13235 | goto error_ret_free_internal; | |
ed7007c1 | 13236 | hash = ppc_elf_hash_entry (h); |
411e1bfb | 13237 | |
8843416a | 13238 | ok_dest = FALSE; |
8387904d | 13239 | fdh = NULL; |
7fe2b9a6 | 13240 | sym_value = 0; |
411e1bfb | 13241 | if (hash == NULL) |
721956f4 | 13242 | { |
411e1bfb | 13243 | sym_value = sym->st_value; |
c27b8c2a AM |
13244 | if (sym_sec != NULL |
13245 | && sym_sec->output_section != NULL) | |
13246 | ok_dest = TRUE; | |
721956f4 | 13247 | } |
7fe2b9a6 AM |
13248 | else if (hash->elf.root.type == bfd_link_hash_defined |
13249 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13250 | { | |
13251 | sym_value = hash->elf.root.u.def.value; | |
13252 | if (sym_sec->output_section != NULL) | |
13253 | ok_dest = TRUE; | |
13254 | } | |
13255 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13256 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13257 | { |
99877b66 | 13258 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13259 | use the func descriptor sym instead if it is |
13260 | defined. */ | |
ceb1f1ef | 13261 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13262 | && hash->oh != NULL) |
8387904d | 13263 | { |
8c5b4e52 | 13264 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13265 | if (fdh->elf.root.type == bfd_link_hash_defined |
13266 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13267 | { | |
13268 | sym_sec = fdh->elf.root.u.def.section; | |
13269 | sym_value = fdh->elf.root.u.def.value; | |
13270 | if (sym_sec->output_section != NULL) | |
13271 | ok_dest = TRUE; | |
13272 | } | |
99877b66 AM |
13273 | else |
13274 | fdh = NULL; | |
8387904d | 13275 | } |
7fe2b9a6 AM |
13276 | } |
13277 | else | |
13278 | { | |
13279 | bfd_set_error (bfd_error_bad_value); | |
13280 | goto error_ret_free_internal; | |
721956f4 AM |
13281 | } |
13282 | ||
8843416a | 13283 | destination = 0; |
6911b7dc | 13284 | local_off = 0; |
8843416a AM |
13285 | if (ok_dest) |
13286 | { | |
13287 | sym_value += irela->r_addend; | |
13288 | destination = (sym_value | |
13289 | + sym_sec->output_offset | |
13290 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13291 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13292 | ? hash->elf.other | |
13293 | : sym->st_other); | |
8843416a AM |
13294 | } |
13295 | ||
8387904d | 13296 | code_sec = sym_sec; |
e054468f | 13297 | code_value = sym_value; |
74f0fb50 AM |
13298 | opd = get_opd_info (sym_sec); |
13299 | if (opd != NULL) | |
8387904d AM |
13300 | { |
13301 | bfd_vma dest; | |
13302 | ||
74f0fb50 | 13303 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13304 | { |
51aecdc5 | 13305 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13306 | if (adjust == -1) |
13307 | continue; | |
e054468f | 13308 | code_value += adjust; |
8387904d AM |
13309 | sym_value += adjust; |
13310 | } | |
13311 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 13312 | &code_sec, &code_value, FALSE); |
8387904d AM |
13313 | if (dest != (bfd_vma) -1) |
13314 | { | |
13315 | destination = dest; | |
13316 | if (fdh != NULL) | |
13317 | { | |
13318 | /* Fixup old ABI sym to point at code | |
13319 | entry. */ | |
99877b66 | 13320 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13321 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13322 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13323 | } |
13324 | } | |
13325 | } | |
13326 | ||
721956f4 | 13327 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13328 | plt_ent = NULL; |
721956f4 | 13329 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13330 | &plt_ent, destination, |
13331 | local_off); | |
ad8e1ba5 | 13332 | |
05d0e962 AM |
13333 | if (r_type == R_PPC64_REL24_NOTOC) |
13334 | { | |
13335 | if (stub_type == ppc_stub_plt_call) | |
13336 | stub_type = ppc_stub_plt_call_notoc; | |
13337 | else if (stub_type == ppc_stub_long_branch | |
13338 | || (code_sec != NULL | |
13339 | && code_sec->output_section != NULL | |
13340 | && (((hash ? hash->elf.other : sym->st_other) | |
13341 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 13342 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
13343 | stub_type = ppc_stub_long_branch_notoc; |
13344 | } | |
13345 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13346 | { |
13347 | /* Check whether we need a TOC adjusting stub. | |
13348 | Since the linker pastes together pieces from | |
13349 | different object files when creating the | |
13350 | _init and _fini functions, it may be that a | |
13351 | call to what looks like a local sym is in | |
13352 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13353 | if ((code_sec != NULL |
13354 | && code_sec->output_section != NULL | |
13355 | && (htab->sec_info[code_sec->id].toc_off | |
13356 | != htab->sec_info[section->id].toc_off) | |
13357 | && (code_sec->has_toc_reloc | |
13358 | || code_sec->makes_toc_func_call)) | |
13359 | || (((hash ? hash->elf.other : sym->st_other) | |
13360 | & STO_PPC64_LOCAL_MASK) | |
13361 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13362 | stub_type = ppc_stub_long_branch_r2off; |
13363 | } | |
13364 | ||
721956f4 AM |
13365 | if (stub_type == ppc_stub_none) |
13366 | continue; | |
13367 | ||
411e1bfb AM |
13368 | /* __tls_get_addr calls might be eliminated. */ |
13369 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13370 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13371 | && hash != NULL |
ed7007c1 | 13372 | && is_tls_get_addr (&hash->elf, htab) |
411e1bfb AM |
13373 | && section->has_tls_reloc |
13374 | && irela != internal_relocs) | |
13375 | { | |
13376 | /* Get tls info. */ | |
f961d9dd | 13377 | unsigned char *tls_mask; |
411e1bfb | 13378 | |
3a71aa26 | 13379 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13380 | irela - 1, input_bfd)) |
13381 | goto error_ret_free_internal; | |
abc489c6 AM |
13382 | if ((*tls_mask & TLS_TLS) != 0 |
13383 | && (*tls_mask & (TLS_GD | TLS_LD)) == 0) | |
411e1bfb AM |
13384 | continue; |
13385 | } | |
13386 | ||
f378ab09 | 13387 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13388 | { |
6e1816be AM |
13389 | if (!htab->opd_abi |
13390 | && htab->params->plt_localentry0 != 0 | |
13391 | && is_elfv2_localentry0 (&hash->elf)) | |
13392 | htab->has_plt_localentry0 = 1; | |
13393 | else if (irela + 1 < irelaend | |
13394 | && irela[1].r_offset == irela->r_offset + 4 | |
13395 | && (ELF64_R_TYPE (irela[1].r_info) | |
13396 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13397 | { |
13398 | if (!tocsave_find (htab, INSERT, | |
13399 | &local_syms, irela + 1, input_bfd)) | |
13400 | goto error_ret_free_internal; | |
13401 | } | |
f378ab09 AM |
13402 | else |
13403 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13404 | } |
3b421ab3 | 13405 | |
721956f4 | 13406 | /* Support for grouping stub sections. */ |
6f20ed8a | 13407 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13408 | |
13409 | /* Get the name of this stub. */ | |
13410 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13411 | if (!stub_name) | |
13412 | goto error_ret_free_internal; | |
13413 | ||
13414 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 13415 | stub_name, FALSE, FALSE); |
721956f4 AM |
13416 | if (stub_entry != NULL) |
13417 | { | |
05d0e962 AM |
13418 | enum ppc_stub_type old_type; |
13419 | /* A stub has already been created, but it may | |
13420 | not be the required type. We shouldn't be | |
13421 | transitioning from plt_call to long_branch | |
13422 | stubs or vice versa, but we might be | |
13423 | upgrading from plt_call to plt_call_r2save or | |
13424 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13425 | free (stub_name); |
05d0e962 AM |
13426 | old_type = stub_entry->stub_type; |
13427 | switch (old_type) | |
13428 | { | |
13429 | default: | |
13430 | abort (); | |
13431 | ||
13432 | case ppc_stub_save_res: | |
13433 | continue; | |
13434 | ||
13435 | case ppc_stub_plt_call: | |
13436 | case ppc_stub_plt_call_r2save: | |
13437 | case ppc_stub_plt_call_notoc: | |
13438 | case ppc_stub_plt_call_both: | |
13439 | if (stub_type == ppc_stub_plt_call) | |
13440 | continue; | |
13441 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13442 | { | |
13443 | if (old_type == ppc_stub_plt_call_notoc) | |
13444 | stub_type = ppc_stub_plt_call_both; | |
13445 | } | |
13446 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13447 | { | |
13448 | if (old_type == ppc_stub_plt_call_r2save) | |
13449 | stub_type = ppc_stub_plt_call_both; | |
13450 | } | |
13451 | else | |
13452 | abort (); | |
13453 | break; | |
13454 | ||
13455 | case ppc_stub_plt_branch: | |
13456 | case ppc_stub_plt_branch_r2off: | |
13457 | case ppc_stub_plt_branch_notoc: | |
13458 | case ppc_stub_plt_branch_both: | |
13459 | old_type += (ppc_stub_long_branch | |
13460 | - ppc_stub_plt_branch); | |
13461 | /* Fall through. */ | |
13462 | case ppc_stub_long_branch: | |
13463 | case ppc_stub_long_branch_r2off: | |
13464 | case ppc_stub_long_branch_notoc: | |
13465 | case ppc_stub_long_branch_both: | |
13466 | if (stub_type == ppc_stub_long_branch) | |
13467 | continue; | |
13468 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13469 | { | |
13470 | if (old_type == ppc_stub_long_branch_notoc) | |
13471 | stub_type = ppc_stub_long_branch_both; | |
13472 | } | |
13473 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13474 | { | |
13475 | if (old_type == ppc_stub_long_branch_r2off) | |
13476 | stub_type = ppc_stub_long_branch_both; | |
13477 | } | |
13478 | else | |
13479 | abort (); | |
13480 | break; | |
13481 | } | |
13482 | if (old_type < stub_type) | |
794e51c0 | 13483 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13484 | continue; |
13485 | } | |
13486 | ||
25f53a85 | 13487 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13488 | if (stub_entry == NULL) |
13489 | { | |
13490 | free (stub_name); | |
6cdc0ccc AM |
13491 | error_ret_free_internal: |
13492 | if (elf_section_data (section)->relocs == NULL) | |
13493 | free (internal_relocs); | |
13494 | error_ret_free_local: | |
c9594989 AM |
13495 | if (symtab_hdr->contents |
13496 | != (unsigned char *) local_syms) | |
6cdc0ccc | 13497 | free (local_syms); |
b34976b6 | 13498 | return FALSE; |
721956f4 AM |
13499 | } |
13500 | ||
ad8e1ba5 | 13501 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13502 | if (stub_type >= ppc_stub_plt_call |
13503 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13504 | { |
05d0e962 AM |
13505 | stub_entry->target_value = sym_value; |
13506 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13507 | } |
13508 | else | |
13509 | { | |
05d0e962 AM |
13510 | stub_entry->target_value = code_value; |
13511 | stub_entry->target_section = code_sec; | |
e054468f | 13512 | } |
721956f4 | 13513 | stub_entry->h = hash; |
e054468f | 13514 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13515 | stub_entry->symtype |
13516 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13517 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13518 | |
3d58e1fc AM |
13519 | if (hash != NULL |
13520 | && (hash->elf.root.type == bfd_link_hash_defined | |
13521 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13522 | htab->stub_globals += 1; |
721956f4 AM |
13523 | } |
13524 | ||
13525 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13526 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13527 | free (internal_relocs); |
721956f4 | 13528 | } |
6cdc0ccc AM |
13529 | |
13530 | if (local_syms != NULL | |
13531 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13532 | { | |
13533 | if (!info->keep_memory) | |
13534 | free (local_syms); | |
13535 | else | |
13536 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13537 | } | |
721956f4 AM |
13538 | } |
13539 | ||
5c3dead3 | 13540 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13541 | stub sections. */ |
d4aaa2a0 | 13542 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13543 | { |
13544 | group->lr_restore = 0; | |
13545 | group->eh_size = 0; | |
13546 | if (group->stub_sec != NULL) | |
13547 | { | |
13548 | asection *stub_sec = group->stub_sec; | |
13549 | ||
13550 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13551 | || stub_sec->rawsize < stub_sec->size) | |
13552 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13553 | stub_sec->rawsize = stub_sec->size; | |
13554 | stub_sec->size = 0; | |
13555 | stub_sec->reloc_count = 0; | |
13556 | stub_sec->flags &= ~SEC_RELOC; | |
13557 | } | |
13558 | } | |
a804e476 AM |
13559 | if (htab->tga_group != NULL) |
13560 | { | |
13561 | /* See emit_tga_desc and emit_tga_desc_eh_frame. */ | |
13562 | htab->tga_group->eh_size | |
13563 | = 1 + 2 + (htab->opd_abi != 0) + 3 + 8 * 2 + 3 + 8 + 3; | |
13564 | htab->tga_group->lr_restore = 23 * 4; | |
13565 | htab->tga_group->stub_sec->size = 24 * 4; | |
13566 | } | |
eea6121a | 13567 | |
ba21f564 AM |
13568 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13569 | || htab->brlt->rawsize < htab->brlt->size) | |
13570 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13571 | htab->brlt->size = 0; |
84f5d08e AM |
13572 | htab->brlt->reloc_count = 0; |
13573 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13574 | if (htab->relbrlt != NULL) |
eea6121a | 13575 | htab->relbrlt->size = 0; |
721956f4 | 13576 | |
63bc6f6c | 13577 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13578 | |
a4b6fadd AM |
13579 | for (group = htab->group; group != NULL; group = group->next) |
13580 | if (group->needs_save_res) | |
13581 | group->stub_sec->size += htab->sfpr->size; | |
13582 | ||
176a0d42 AM |
13583 | if (info->emitrelocations |
13584 | && htab->glink != NULL && htab->glink->size != 0) | |
13585 | { | |
13586 | htab->glink->reloc_count = 1; | |
13587 | htab->glink->flags |= SEC_RELOC; | |
13588 | } | |
13589 | ||
58d180e8 AM |
13590 | if (htab->glink_eh_frame != NULL |
13591 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13592 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13593 | { |
2e0ce1c8 | 13594 | size_t size = 0, align = 4; |
58d180e8 | 13595 | |
d4aaa2a0 | 13596 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13597 | if (group->eh_size != 0) |
13598 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13599 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13600 | size += (24 + align - 1) & -align; |
58d180e8 | 13601 | if (size != 0) |
2e0ce1c8 AM |
13602 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13603 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13604 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13605 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13606 | htab->glink_eh_frame->size = size; | |
13607 | } | |
13608 | ||
e7d1c40c | 13609 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13610 | for (group = htab->group; group != NULL; group = group->next) |
13611 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13612 | { |
13613 | int align = abs (htab->params->plt_stub_align); | |
13614 | group->stub_sec->size | |
13615 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13616 | } | |
d4aaa2a0 AM |
13617 | |
13618 | for (group = htab->group; group != NULL; group = group->next) | |
13619 | if (group->stub_sec != NULL | |
13620 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13621 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13622 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13623 | break; |
13624 | ||
d4aaa2a0 | 13625 | if (group == NULL |
ba21f564 AM |
13626 | && (htab->brlt->rawsize == htab->brlt->size |
13627 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13628 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 | 13629 | && (htab->glink_eh_frame == NULL |
a804e476 AM |
13630 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size) |
13631 | && (htab->tga_group == NULL | |
13632 | || htab->stub_iteration > 1)) | |
5c3dead3 AM |
13633 | break; |
13634 | ||
721956f4 | 13635 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13636 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13637 | } |
13638 | ||
da44f4e5 AM |
13639 | if (htab->glink_eh_frame != NULL |
13640 | && htab->glink_eh_frame->size != 0) | |
13641 | { | |
13642 | bfd_vma val; | |
13643 | bfd_byte *p, *last_fde; | |
13644 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13645 | struct map_stub *group; |
da44f4e5 | 13646 | |
df136d64 AM |
13647 | /* It is necessary to at least have a rough outline of the |
13648 | linker generated CIEs and FDEs written before | |
13649 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13650 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13651 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13652 | if (p == NULL) | |
13653 | return FALSE; | |
13654 | htab->glink_eh_frame->contents = p; | |
13655 | last_fde = p; | |
2e0ce1c8 | 13656 | align = 4; |
da44f4e5 AM |
13657 | |
13658 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13659 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13660 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13661 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13662 | p += last_fde_len + 4; |
da44f4e5 | 13663 | |
d4aaa2a0 | 13664 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13665 | if (group->eh_size != 0) |
da44f4e5 | 13666 | { |
df136d64 | 13667 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13668 | last_fde = p; |
df136d64 | 13669 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13670 | /* FDE length. */ |
2e0ce1c8 | 13671 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13672 | p += 4; |
13673 | /* CIE pointer. */ | |
13674 | val = p - htab->glink_eh_frame->contents; | |
13675 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13676 | p += 4; | |
13677 | /* Offset to stub section, written later. */ | |
13678 | p += 4; | |
13679 | /* stub section size. */ | |
d4aaa2a0 | 13680 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13681 | p += 4; |
13682 | /* Augmentation. */ | |
13683 | p += 1; | |
df136d64 AM |
13684 | /* Make sure we don't have all nops. This is enough for |
13685 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13686 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13687 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13688 | } |
13689 | if (htab->glink != NULL && htab->glink->size != 0) | |
13690 | { | |
13691 | last_fde = p; | |
2e0ce1c8 | 13692 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13693 | /* FDE length. */ |
2e0ce1c8 | 13694 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13695 | p += 4; |
13696 | /* CIE pointer. */ | |
13697 | val = p - htab->glink_eh_frame->contents; | |
13698 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13699 | p += 4; | |
13700 | /* Offset to .glink, written later. */ | |
13701 | p += 4; | |
13702 | /* .glink size. */ | |
13703 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13704 | p += 4; | |
13705 | /* Augmentation. */ | |
13706 | p += 1; | |
13707 | ||
13708 | *p++ = DW_CFA_advance_loc + 1; | |
13709 | *p++ = DW_CFA_register; | |
13710 | *p++ = 65; | |
9f08fa5c | 13711 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13712 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13713 | *p++ = DW_CFA_restore_extended; |
13714 | *p++ = 65; | |
2e0ce1c8 | 13715 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13716 | } |
13717 | /* Subsume any padding into the last FDE if user .eh_frame | |
13718 | sections are aligned more than glink_eh_frame. Otherwise any | |
13719 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13720 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13721 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13722 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13723 | htab->glink_eh_frame->size = size + pad; |
13724 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13725 | } | |
13726 | ||
d969d15f | 13727 | maybe_strip_output (info, htab->brlt); |
2efec98b AM |
13728 | if (htab->relbrlt != NULL) |
13729 | maybe_strip_output (info, htab->relbrlt); | |
d969d15f AM |
13730 | if (htab->glink_eh_frame != NULL) |
13731 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13732 | |
b34976b6 | 13733 | return TRUE; |
721956f4 AM |
13734 | } |
13735 | ||
13736 | /* Called after we have determined section placement. If sections | |
805fc799 | 13737 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13738 | |
805fc799 | 13739 | bfd_vma |
1c865ab2 | 13740 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13741 | { |
805fc799 | 13742 | asection *s; |
a27e685f | 13743 | bfd_vma TOCstart, adjust; |
721956f4 | 13744 | |
43417696 AM |
13745 | if (info != NULL) |
13746 | { | |
13747 | struct elf_link_hash_entry *h; | |
13748 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13749 | ||
13750 | if (is_elf_hash_table (htab) | |
13751 | && htab->hgot != NULL) | |
13752 | h = htab->hgot; | |
13753 | else | |
13754 | { | |
13755 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13756 | if (is_elf_hash_table (htab)) | |
13757 | htab->hgot = h; | |
13758 | } | |
13759 | if (h != NULL | |
13760 | && h->root.type == bfd_link_hash_defined | |
13761 | && !h->root.linker_def | |
13762 | && (!is_elf_hash_table (htab) | |
13763 | || h->def_regular)) | |
13764 | { | |
ed7007c1 | 13765 | TOCstart = defined_sym_val (h) - TOC_BASE_OFF; |
43417696 AM |
13766 | _bfd_set_gp_value (obfd, TOCstart); |
13767 | return TOCstart; | |
13768 | } | |
13769 | } | |
13770 | ||
805fc799 AM |
13771 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13772 | order. The TOC starts where the first of these sections starts. */ | |
13773 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13774 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13775 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13776 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13777 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13778 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13779 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13780 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13781 | { |
13782 | /* This may happen for | |
13783 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13784 | .toc directive | |
13785 | o bad linker script | |
13786 | o --gc-sections and empty TOC sections | |
13787 | ||
13788 | FIXME: Warn user? */ | |
13789 | ||
13790 | /* Look for a likely section. We probably won't even be | |
13791 | using TOCstart. */ | |
13792 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13793 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13794 | | SEC_EXCLUDE)) | |
805fc799 AM |
13795 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13796 | break; | |
721956f4 | 13797 | if (s == NULL) |
805fc799 | 13798 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13799 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13800 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13801 | break; | |
721956f4 | 13802 | if (s == NULL) |
805fc799 | 13803 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13804 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13805 | == SEC_ALLOC) | |
805fc799 | 13806 | break; |
721956f4 | 13807 | if (s == NULL) |
805fc799 | 13808 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13809 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13810 | break; |
13811 | } | |
721956f4 | 13812 | |
805fc799 AM |
13813 | TOCstart = 0; |
13814 | if (s != NULL) | |
13815 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13816 | |
a27e685f AM |
13817 | /* Force alignment. */ |
13818 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13819 | TOCstart -= adjust; | |
1c865ab2 AM |
13820 | _bfd_set_gp_value (obfd, TOCstart); |
13821 | ||
810d4e75 | 13822 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13823 | { |
13824 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13825 | ||
810d4e75 AM |
13826 | if (htab != NULL) |
13827 | { | |
13828 | if (htab->elf.hgot != NULL) | |
13829 | { | |
a27e685f | 13830 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13831 | htab->elf.hgot->root.u.def.section = s; |
13832 | } | |
13833 | } | |
13834 | else | |
1c865ab2 | 13835 | { |
810d4e75 AM |
13836 | struct bfd_link_hash_entry *bh = NULL; |
13837 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13838 | s, TOC_BASE_OFF - adjust, |
13839 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13840 | } |
13841 | } | |
805fc799 | 13842 | return TOCstart; |
721956f4 AM |
13843 | } |
13844 | ||
a345bc8d | 13845 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13846 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13847 | |
13848 | static bfd_boolean | |
49c09209 | 13849 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13850 | { |
13851 | struct bfd_link_info *info; | |
13852 | struct ppc_link_hash_table *htab; | |
49c09209 | 13853 | struct plt_entry *ent; |
a345bc8d AM |
13854 | asection *s; |
13855 | ||
13856 | if (h->root.type == bfd_link_hash_indirect) | |
13857 | return TRUE; | |
13858 | ||
49c09209 AM |
13859 | info = inf; |
13860 | htab = ppc_hash_table (info); | |
13861 | if (htab == NULL) | |
13862 | return FALSE; | |
13863 | ||
13864 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13865 | if (ent->plt.offset != (bfd_vma) -1) | |
13866 | { | |
13867 | /* This symbol has an entry in the procedure linkage | |
13868 | table. Set it up. */ | |
13869 | Elf_Internal_Rela rela; | |
2d7ad24e | 13870 | asection *plt, *relplt; |
49c09209 AM |
13871 | bfd_byte *loc; |
13872 | ||
13873 | if (!htab->elf.dynamic_sections_created | |
13874 | || h->dynindx == -1) | |
13875 | { | |
13876 | if (!(h->def_regular | |
13877 | && (h->root.type == bfd_link_hash_defined | |
13878 | || h->root.type == bfd_link_hash_defweak))) | |
13879 | continue; | |
2d7ad24e AM |
13880 | if (h->type == STT_GNU_IFUNC) |
13881 | { | |
13882 | plt = htab->elf.iplt; | |
13883 | relplt = htab->elf.irelplt; | |
13884 | htab->local_ifunc_resolver = 1; | |
13885 | if (htab->opd_abi) | |
13886 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13887 | else | |
13888 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13889 | } | |
49c09209 | 13890 | else |
2d7ad24e AM |
13891 | { |
13892 | plt = htab->pltlocal; | |
13893 | if (bfd_link_pic (info)) | |
13894 | { | |
13895 | relplt = htab->relpltlocal; | |
13896 | if (htab->opd_abi) | |
13897 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13898 | else | |
13899 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13900 | } | |
13901 | else | |
13902 | relplt = NULL; | |
13903 | } | |
ed7007c1 | 13904 | rela.r_addend = defined_sym_val (h) + ent->addend; |
2d7ad24e AM |
13905 | |
13906 | if (relplt == NULL) | |
13907 | { | |
13908 | loc = plt->contents + ent->plt.offset; | |
13909 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13910 | if (htab->opd_abi) | |
13911 | { | |
13912 | bfd_vma toc = elf_gp (info->output_bfd); | |
13913 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13914 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13915 | } | |
13916 | } | |
13917 | else | |
13918 | { | |
13919 | rela.r_offset = (plt->output_section->vma | |
13920 | + plt->output_offset | |
13921 | + ent->plt.offset); | |
13922 | loc = relplt->contents + (relplt->reloc_count++ | |
13923 | * sizeof (Elf64_External_Rela)); | |
13924 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13925 | } | |
49c09209 AM |
13926 | } |
13927 | else | |
13928 | { | |
13929 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13930 | + htab->elf.splt->output_offset | |
13931 | + ent->plt.offset); | |
13932 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13933 | rela.r_addend = ent->addend; | |
13934 | loc = (htab->elf.srelplt->contents | |
13935 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13936 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13937 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13938 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13939 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13940 | } |
49c09209 AM |
13941 | } |
13942 | ||
a345bc8d AM |
13943 | if (!h->pointer_equality_needed) |
13944 | return TRUE; | |
13945 | ||
13946 | if (h->def_regular) | |
13947 | return TRUE; | |
13948 | ||
9e390558 | 13949 | s = htab->global_entry; |
49c09209 AM |
13950 | if (s == NULL || s->size == 0) |
13951 | return TRUE; | |
13952 | ||
13953 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13954 | if (ent->plt.offset != (bfd_vma) -1 | |
13955 | && ent->addend == 0) | |
a345bc8d AM |
13956 | { |
13957 | bfd_byte *p; | |
13958 | asection *plt; | |
13959 | bfd_vma off; | |
13960 | ||
a345bc8d | 13961 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13962 | plt = htab->elf.splt; |
a345bc8d AM |
13963 | if (!htab->elf.dynamic_sections_created |
13964 | || h->dynindx == -1) | |
2d7ad24e AM |
13965 | { |
13966 | if (h->type == STT_GNU_IFUNC) | |
13967 | plt = htab->elf.iplt; | |
13968 | else | |
13969 | plt = htab->pltlocal; | |
13970 | } | |
49c09209 | 13971 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13972 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13973 | ||
13974 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13975 | { | |
13976 | info->callbacks->einfo | |
c1c8c1ef | 13977 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13978 | h->root.root.string); |
13979 | bfd_set_error (bfd_error_bad_value); | |
13980 | htab->stub_error = TRUE; | |
13981 | } | |
13982 | ||
7341d5e2 AM |
13983 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13984 | if (htab->params->emit_stub_syms) | |
13985 | { | |
13986 | size_t len = strlen (h->root.root.string); | |
13987 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13988 | ||
13989 | if (name == NULL) | |
13990 | return FALSE; | |
13991 | ||
13992 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13993 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13994 | if (h == NULL) | |
13995 | return FALSE; | |
13996 | if (h->root.type == bfd_link_hash_new) | |
13997 | { | |
13998 | h->root.type = bfd_link_hash_defined; | |
13999 | h->root.u.def.section = s; | |
14000 | h->root.u.def.value = p - s->contents; | |
14001 | h->ref_regular = 1; | |
14002 | h->def_regular = 1; | |
14003 | h->ref_regular_nonweak = 1; | |
14004 | h->forced_local = 1; | |
14005 | h->non_elf = 0; | |
2ec55de3 | 14006 | h->root.linker_def = 1; |
7341d5e2 AM |
14007 | } |
14008 | } | |
14009 | ||
a345bc8d AM |
14010 | if (PPC_HA (off) != 0) |
14011 | { | |
14012 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
14013 | p += 4; | |
14014 | } | |
14015 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
14016 | p += 4; | |
14017 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
14018 | p += 4; | |
407aa07c | 14019 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14020 | break; |
14021 | } | |
14022 | return TRUE; | |
14023 | } | |
14024 | ||
49c09209 AM |
14025 | /* Write PLT relocs for locals. */ |
14026 | ||
14027 | static bfd_boolean | |
14028 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
14029 | { | |
14030 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14031 | bfd *ibfd; | |
14032 | ||
14033 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14034 | { | |
14035 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14036 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14037 | Elf_Internal_Shdr *symtab_hdr; | |
14038 | bfd_size_type locsymcount; | |
14039 | Elf_Internal_Sym *local_syms = NULL; | |
14040 | struct plt_entry *ent; | |
14041 | ||
14042 | if (!is_ppc64_elf (ibfd)) | |
14043 | continue; | |
14044 | ||
14045 | lgot_ents = elf_local_got_ents (ibfd); | |
14046 | if (!lgot_ents) | |
14047 | continue; | |
14048 | ||
14049 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14050 | locsymcount = symtab_hdr->sh_info; | |
14051 | end_lgot_ents = lgot_ents + locsymcount; | |
14052 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14053 | end_local_plt = local_plt + locsymcount; | |
14054 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14055 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14056 | if (ent->plt.offset != (bfd_vma) -1) | |
14057 | { | |
14058 | Elf_Internal_Sym *sym; | |
14059 | asection *sym_sec; | |
14060 | asection *plt, *relplt; | |
14061 | bfd_byte *loc; | |
14062 | bfd_vma val; | |
49c09209 AM |
14063 | |
14064 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14065 | lplt - local_plt, ibfd)) | |
14066 | { | |
c9594989 | 14067 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
49c09209 AM |
14068 | free (local_syms); |
14069 | return FALSE; | |
14070 | } | |
14071 | ||
14072 | val = sym->st_value + ent->addend; | |
ba85c15d AM |
14073 | if (ELF_ST_TYPE (sym->st_info) != STT_GNU_IFUNC) |
14074 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
49c09209 AM |
14075 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
14076 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14077 | ||
2d7ad24e AM |
14078 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14079 | { | |
14080 | htab->local_ifunc_resolver = 1; | |
14081 | plt = htab->elf.iplt; | |
14082 | relplt = htab->elf.irelplt; | |
14083 | } | |
14084 | else | |
14085 | { | |
14086 | plt = htab->pltlocal; | |
14087 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
14088 | } | |
49c09209 | 14089 | |
2d7ad24e AM |
14090 | if (relplt == NULL) |
14091 | { | |
14092 | loc = plt->contents + ent->plt.offset; | |
14093 | bfd_put_64 (info->output_bfd, val, loc); | |
14094 | if (htab->opd_abi) | |
14095 | { | |
14096 | bfd_vma toc = elf_gp (ibfd); | |
14097 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14098 | } | |
14099 | } | |
49c09209 | 14100 | else |
2d7ad24e AM |
14101 | { |
14102 | Elf_Internal_Rela rela; | |
14103 | rela.r_offset = (ent->plt.offset | |
14104 | + plt->output_offset | |
14105 | + plt->output_section->vma); | |
14106 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14107 | { | |
14108 | if (htab->opd_abi) | |
14109 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14110 | else | |
14111 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14112 | } | |
14113 | else | |
14114 | { | |
14115 | if (htab->opd_abi) | |
14116 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14117 | else | |
14118 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14119 | } | |
14120 | rela.r_addend = val; | |
14121 | loc = relplt->contents + (relplt->reloc_count++ | |
14122 | * sizeof (Elf64_External_Rela)); | |
14123 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14124 | } | |
49c09209 AM |
14125 | } |
14126 | ||
14127 | if (local_syms != NULL | |
14128 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14129 | { | |
14130 | if (!info->keep_memory) | |
14131 | free (local_syms); | |
14132 | else | |
14133 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14134 | } | |
14135 | } | |
14136 | return TRUE; | |
14137 | } | |
14138 | ||
a804e476 AM |
14139 | /* Emit the static wrapper function preserving registers around a |
14140 | __tls_get_addr_opt call. */ | |
14141 | ||
14142 | static bfd_boolean | |
14143 | emit_tga_desc (struct ppc_link_hash_table *htab) | |
14144 | { | |
14145 | asection *stub_sec = htab->tga_group->stub_sec; | |
14146 | unsigned int cfa_updt = 11 * 4; | |
14147 | bfd_byte *p; | |
14148 | bfd_vma to, from, delta; | |
14149 | ||
14150 | BFD_ASSERT (htab->tga_desc_fd->elf.root.type == bfd_link_hash_defined | |
14151 | && htab->tga_desc_fd->elf.root.u.def.section == stub_sec | |
14152 | && htab->tga_desc_fd->elf.root.u.def.value == 0); | |
14153 | to = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
14154 | from = defined_sym_val (&htab->tga_desc_fd->elf) + cfa_updt; | |
14155 | delta = to - from; | |
14156 | if (delta + (1 << 25) >= 1 << 26) | |
14157 | { | |
14158 | _bfd_error_handler (_("__tls_get_addr call offset overflow")); | |
14159 | htab->stub_error = TRUE; | |
14160 | return FALSE; | |
14161 | } | |
14162 | ||
14163 | p = stub_sec->contents; | |
14164 | p = tls_get_addr_prologue (htab->elf.dynobj, p, htab); | |
14165 | bfd_put_32 (stub_sec->owner, B_DOT | 1 | (delta & 0x3fffffc), p); | |
14166 | p += 4; | |
14167 | p = tls_get_addr_epilogue (htab->elf.dynobj, p, htab); | |
14168 | return stub_sec->size == (bfd_size_type) (p - stub_sec->contents); | |
14169 | } | |
14170 | ||
14171 | /* Emit eh_frame describing the static wrapper function. */ | |
14172 | ||
14173 | static bfd_byte * | |
14174 | emit_tga_desc_eh_frame (struct ppc_link_hash_table *htab, bfd_byte *p) | |
14175 | { | |
14176 | unsigned int cfa_updt = 11 * 4; | |
14177 | unsigned int i; | |
14178 | ||
14179 | *p++ = DW_CFA_advance_loc + cfa_updt / 4; | |
14180 | *p++ = DW_CFA_def_cfa_offset; | |
14181 | if (htab->opd_abi) | |
14182 | { | |
14183 | *p++ = 128; | |
14184 | *p++ = 1; | |
14185 | } | |
14186 | else | |
14187 | *p++ = 96; | |
14188 | *p++ = DW_CFA_offset_extended_sf; | |
14189 | *p++ = 65; | |
14190 | *p++ = (-16 / 8) & 0x7f; | |
14191 | for (i = 4; i < 12; i++) | |
14192 | { | |
14193 | *p++ = DW_CFA_offset + i; | |
14194 | *p++ = (htab->opd_abi ? 13 : 12) - i; | |
14195 | } | |
14196 | *p++ = DW_CFA_advance_loc + 10; | |
14197 | *p++ = DW_CFA_def_cfa_offset; | |
14198 | *p++ = 0; | |
14199 | for (i = 4; i < 12; i++) | |
14200 | *p++ = DW_CFA_restore + i; | |
14201 | *p++ = DW_CFA_advance_loc + 2; | |
14202 | *p++ = DW_CFA_restore_extended; | |
14203 | *p++ = 65; | |
14204 | return p; | |
14205 | } | |
14206 | ||
721956f4 AM |
14207 | /* Build all the stubs associated with the current output file. |
14208 | The stubs are kept in a hash table attached to the main linker | |
14209 | hash table. This function is called via gldelf64ppc_finish. */ | |
14210 | ||
b34976b6 | 14211 | bfd_boolean |
e7d1c40c | 14212 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14213 | char **stats) |
5d1634d7 AM |
14214 | { |
14215 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14216 | struct map_stub *group; |
721956f4 | 14217 | asection *stub_sec; |
5d1634d7 | 14218 | bfd_byte *p; |
e717da7e | 14219 | int stub_sec_count = 0; |
5d1634d7 | 14220 | |
4dfe6ac6 NC |
14221 | if (htab == NULL) |
14222 | return FALSE; | |
14223 | ||
eea6121a | 14224 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14225 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14226 | { |
14227 | group->eh_size = 0; | |
14228 | group->lr_restore = 0; | |
14229 | if ((stub_sec = group->stub_sec) != NULL | |
14230 | && stub_sec->size != 0) | |
14231 | { | |
14232 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14233 | stub_sec->size); | |
14234 | if (stub_sec->contents == NULL) | |
14235 | return FALSE; | |
14236 | stub_sec->size = 0; | |
14237 | } | |
14238 | } | |
5d1634d7 | 14239 | |
23eb7e01 | 14240 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14241 | { |
9f951329 | 14242 | unsigned int indx; |
ad8e1ba5 | 14243 | bfd_vma plt0; |
9f951329 | 14244 | |
721956f4 | 14245 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14246 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14247 | { |
14248 | struct elf_link_hash_entry *h; | |
468392fb AM |
14249 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
14250 | TRUE, FALSE, FALSE); | |
97b639ba AM |
14251 | if (h == NULL) |
14252 | return FALSE; | |
14253 | if (h->root.type == bfd_link_hash_new) | |
14254 | { | |
14255 | h->root.type = bfd_link_hash_defined; | |
14256 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14257 | h->root.u.def.value = 8; |
f5385ebf AM |
14258 | h->ref_regular = 1; |
14259 | h->def_regular = 1; | |
14260 | h->ref_regular_nonweak = 1; | |
14261 | h->forced_local = 1; | |
14262 | h->non_elf = 0; | |
2ec55de3 | 14263 | h->root.linker_def = 1; |
97b639ba AM |
14264 | } |
14265 | } | |
33e44f2e AM |
14266 | plt0 = (htab->elf.splt->output_section->vma |
14267 | + htab->elf.splt->output_offset | |
14268 | - 16); | |
176a0d42 AM |
14269 | if (info->emitrelocations) |
14270 | { | |
14271 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
14272 | if (r == NULL) | |
14273 | return FALSE; | |
14274 | r->r_offset = (htab->glink->output_offset | |
14275 | + htab->glink->output_section->vma); | |
14276 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
14277 | r->r_addend = plt0; | |
14278 | } | |
4ce794b7 | 14279 | p = htab->glink->contents; |
176a0d42 | 14280 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
14281 | bfd_put_64 (htab->glink->owner, plt0, p); |
14282 | p += 8; | |
b9e5796b AM |
14283 | if (htab->opd_abi) |
14284 | { | |
14285 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
14286 | p += 4; | |
14287 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14288 | p += 4; | |
14289 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14290 | p += 4; | |
14291 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
14292 | p += 4; | |
14293 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
14294 | p += 4; | |
14295 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14296 | p += 4; | |
14297 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14298 | p += 4; | |
14299 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
14300 | p += 4; | |
14301 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14302 | p += 4; | |
14303 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
14304 | p += 4; | |
14305 | } | |
14306 | else | |
14307 | { | |
14308 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
14309 | p += 4; | |
14310 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14311 | p += 4; | |
14312 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14313 | p += 4; | |
f378ab09 AM |
14314 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
14315 | p += 4; | |
b9e5796b AM |
14316 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
14317 | p += 4; | |
14318 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
14319 | p += 4; | |
14320 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
14321 | p += 4; | |
14322 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14323 | p += 4; | |
14324 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
14325 | p += 4; | |
14326 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14327 | p += 4; | |
14328 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
14329 | p += 4; | |
14330 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14331 | p += 4; | |
14332 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
14333 | p += 4; | |
14334 | } | |
407aa07c AM |
14335 | bfd_put_32 (htab->glink->owner, BCTR, p); |
14336 | p += 4; | |
c75bc4f7 | 14337 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 14338 | |
9f951329 AM |
14339 | /* Build the .glink lazy link call stubs. */ |
14340 | indx = 0; | |
9e390558 | 14341 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 14342 | { |
b9e5796b | 14343 | if (htab->opd_abi) |
9f951329 | 14344 | { |
b9e5796b AM |
14345 | if (indx < 0x8000) |
14346 | { | |
14347 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
14348 | p += 4; | |
14349 | } | |
14350 | else | |
14351 | { | |
14352 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
14353 | p += 4; | |
14354 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
14355 | p); | |
14356 | p += 4; | |
14357 | } | |
9f951329 | 14358 | } |
4ce794b7 | 14359 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 14360 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 14361 | indx++; |
9f951329 AM |
14362 | p += 4; |
14363 | } | |
5d1634d7 | 14364 | } |
5d1634d7 | 14365 | |
a804e476 AM |
14366 | if (htab->tga_group != NULL) |
14367 | { | |
14368 | htab->tga_group->lr_restore = 23 * 4; | |
14369 | htab->tga_group->stub_sec->size = 24 * 4; | |
14370 | if (!emit_tga_desc (htab)) | |
14371 | return FALSE; | |
14372 | if (htab->glink_eh_frame != NULL | |
14373 | && htab->glink_eh_frame->size != 0) | |
14374 | { | |
14375 | size_t align = 4; | |
14376 | ||
14377 | p = htab->glink_eh_frame->contents; | |
14378 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14379 | p += 17; | |
14380 | htab->tga_group->eh_size = emit_tga_desc_eh_frame (htab, p) - p; | |
14381 | } | |
14382 | } | |
14383 | ||
49c09209 AM |
14384 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
14385 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
14386 | ||
14387 | if (!write_plt_relocs_for_local_syms (info)) | |
14388 | return FALSE; | |
9e390558 | 14389 | |
7341d5e2 | 14390 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14391 | { |
4ce794b7 | 14392 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14393 | htab->brlt->size); |
4ce794b7 | 14394 | if (htab->brlt->contents == NULL) |
b34976b6 | 14395 | return FALSE; |
721956f4 | 14396 | } |
ee75fd95 | 14397 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14398 | { |
14399 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14400 | htab->relbrlt->size); |
63bc6f6c AM |
14401 | if (htab->relbrlt->contents == NULL) |
14402 | return FALSE; | |
14403 | } | |
5d1634d7 | 14404 | |
721956f4 AM |
14405 | /* Build the stubs as directed by the stub hash table. */ |
14406 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14407 | |
a4b6fadd AM |
14408 | for (group = htab->group; group != NULL; group = group->next) |
14409 | if (group->needs_save_res) | |
7dda8d3c | 14410 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14411 | |
aa8a7074 AM |
14412 | if (htab->relbrlt != NULL) |
14413 | htab->relbrlt->reloc_count = 0; | |
14414 | ||
e7d1c40c | 14415 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14416 | for (group = htab->group; group != NULL; group = group->next) |
14417 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14418 | { |
14419 | int align = abs (htab->params->plt_stub_align); | |
14420 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14421 | } | |
794e51c0 | 14422 | |
7dda8d3c AM |
14423 | for (group = htab->group; group != NULL; group = group->next) |
14424 | if (group->needs_save_res) | |
14425 | { | |
14426 | stub_sec = group->stub_sec; | |
14427 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14428 | htab->sfpr->contents, htab->sfpr->size); | |
14429 | if (htab->params->emit_stub_syms) | |
14430 | { | |
14431 | unsigned int i; | |
14432 | ||
14433 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14434 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
14435 | return FALSE; | |
14436 | } | |
14437 | } | |
14438 | ||
df136d64 AM |
14439 | if (htab->glink_eh_frame != NULL |
14440 | && htab->glink_eh_frame->size != 0) | |
14441 | { | |
14442 | bfd_vma val; | |
14443 | size_t align = 4; | |
14444 | ||
14445 | p = htab->glink_eh_frame->contents; | |
14446 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14447 | ||
14448 | for (group = htab->group; group != NULL; group = group->next) | |
14449 | if (group->eh_size != 0) | |
14450 | { | |
14451 | /* Offset to stub section. */ | |
14452 | val = (group->stub_sec->output_section->vma | |
14453 | + group->stub_sec->output_offset); | |
14454 | val -= (htab->glink_eh_frame->output_section->vma | |
14455 | + htab->glink_eh_frame->output_offset | |
14456 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14457 | if (val + 0x80000000 > 0xffffffff) | |
14458 | { | |
14459 | _bfd_error_handler | |
14460 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14461 | group->stub_sec->name); | |
14462 | return FALSE; | |
14463 | } | |
14464 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14465 | p += (group->eh_size + 17 + 3) & -4; | |
14466 | } | |
14467 | if (htab->glink != NULL && htab->glink->size != 0) | |
14468 | { | |
14469 | /* Offset to .glink. */ | |
14470 | val = (htab->glink->output_section->vma | |
14471 | + htab->glink->output_offset | |
14472 | + 8); | |
14473 | val -= (htab->glink_eh_frame->output_section->vma | |
14474 | + htab->glink_eh_frame->output_offset | |
14475 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14476 | if (val + 0x80000000 > 0xffffffff) | |
14477 | { | |
14478 | _bfd_error_handler | |
14479 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14480 | htab->glink->name); | |
14481 | return FALSE; | |
14482 | } | |
14483 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14484 | p += (24 + align - 1) & -align; | |
14485 | } | |
14486 | } | |
14487 | ||
d4aaa2a0 AM |
14488 | for (group = htab->group; group != NULL; group = group->next) |
14489 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14490 | { |
14491 | stub_sec_count += 1; | |
c9301e31 AM |
14492 | if (stub_sec->rawsize != stub_sec->size |
14493 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14494 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14495 | break; |
14496 | } | |
5d1634d7 | 14497 | |
25516cc5 | 14498 | if (group != NULL) |
5d1634d7 | 14499 | { |
b34976b6 | 14500 | htab->stub_error = TRUE; |
cf97bcb0 | 14501 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14502 | } |
721956f4 | 14503 | |
d2a300cf AM |
14504 | if (htab->stub_error) |
14505 | return FALSE; | |
14506 | ||
14507 | if (stats != NULL) | |
14508 | { | |
988b7300 AM |
14509 | char *groupmsg; |
14510 | if (asprintf (&groupmsg, | |
14511 | ngettext ("linker stubs in %u group\n", | |
14512 | "linker stubs in %u groups\n", | |
14513 | stub_sec_count), | |
14514 | stub_sec_count) < 0) | |
14515 | *stats = NULL; | |
14516 | else | |
14517 | { | |
14518 | if (asprintf (stats, _("%s" | |
14519 | " branch %lu\n" | |
14520 | " branch toc adj %lu\n" | |
14521 | " branch notoc %lu\n" | |
14522 | " branch both %lu\n" | |
14523 | " long branch %lu\n" | |
14524 | " long toc adj %lu\n" | |
14525 | " long notoc %lu\n" | |
14526 | " long both %lu\n" | |
14527 | " plt call %lu\n" | |
14528 | " plt call save %lu\n" | |
14529 | " plt call notoc %lu\n" | |
14530 | " plt call both %lu\n" | |
14531 | " global entry %lu"), | |
14532 | groupmsg, | |
14533 | htab->stub_count[ppc_stub_long_branch - 1], | |
14534 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
14535 | htab->stub_count[ppc_stub_long_branch_notoc - 1], | |
14536 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
14537 | htab->stub_count[ppc_stub_plt_branch - 1], | |
14538 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
14539 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], | |
14540 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
14541 | htab->stub_count[ppc_stub_plt_call - 1], | |
14542 | htab->stub_count[ppc_stub_plt_call_r2save - 1], | |
14543 | htab->stub_count[ppc_stub_plt_call_notoc - 1], | |
14544 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
14545 | htab->stub_count[ppc_stub_global_entry - 1]) < 0) | |
14546 | *stats = NULL; | |
14547 | free (groupmsg); | |
14548 | } | |
d2a300cf AM |
14549 | } |
14550 | return TRUE; | |
5bd4f169 AM |
14551 | } |
14552 | ||
60124e18 AM |
14553 | /* What to do when ld finds relocations against symbols defined in |
14554 | discarded sections. */ | |
14555 | ||
14556 | static unsigned int | |
14557 | ppc64_elf_action_discarded (asection *sec) | |
14558 | { | |
14559 | if (strcmp (".opd", sec->name) == 0) | |
14560 | return 0; | |
14561 | ||
14562 | if (strcmp (".toc", sec->name) == 0) | |
14563 | return 0; | |
14564 | ||
bce50a28 JJ |
14565 | if (strcmp (".toc1", sec->name) == 0) |
14566 | return 0; | |
14567 | ||
60124e18 AM |
14568 | return _bfd_elf_default_action_discarded (sec); |
14569 | } | |
14570 | ||
e59a1001 AM |
14571 | /* These are the dynamic relocations supported by glibc. */ |
14572 | ||
14573 | static bfd_boolean | |
14574 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) | |
14575 | { | |
14576 | switch (r_type) | |
14577 | { | |
14578 | case R_PPC64_RELATIVE: | |
14579 | case R_PPC64_NONE: | |
14580 | case R_PPC64_ADDR64: | |
14581 | case R_PPC64_GLOB_DAT: | |
14582 | case R_PPC64_IRELATIVE: | |
14583 | case R_PPC64_JMP_IREL: | |
14584 | case R_PPC64_JMP_SLOT: | |
14585 | case R_PPC64_DTPMOD64: | |
14586 | case R_PPC64_DTPREL64: | |
14587 | case R_PPC64_TPREL64: | |
14588 | case R_PPC64_TPREL16_LO_DS: | |
14589 | case R_PPC64_TPREL16_DS: | |
14590 | case R_PPC64_TPREL16: | |
14591 | case R_PPC64_TPREL16_LO: | |
14592 | case R_PPC64_TPREL16_HI: | |
14593 | case R_PPC64_TPREL16_HIGH: | |
14594 | case R_PPC64_TPREL16_HA: | |
14595 | case R_PPC64_TPREL16_HIGHA: | |
14596 | case R_PPC64_TPREL16_HIGHER: | |
14597 | case R_PPC64_TPREL16_HIGHEST: | |
14598 | case R_PPC64_TPREL16_HIGHERA: | |
14599 | case R_PPC64_TPREL16_HIGHESTA: | |
14600 | case R_PPC64_ADDR16_LO_DS: | |
14601 | case R_PPC64_ADDR16_LO: | |
14602 | case R_PPC64_ADDR16_HI: | |
14603 | case R_PPC64_ADDR16_HIGH: | |
14604 | case R_PPC64_ADDR16_HA: | |
14605 | case R_PPC64_ADDR16_HIGHA: | |
14606 | case R_PPC64_REL30: | |
14607 | case R_PPC64_COPY: | |
14608 | case R_PPC64_UADDR64: | |
14609 | case R_PPC64_UADDR32: | |
14610 | case R_PPC64_ADDR32: | |
14611 | case R_PPC64_ADDR24: | |
14612 | case R_PPC64_ADDR16: | |
14613 | case R_PPC64_UADDR16: | |
14614 | case R_PPC64_ADDR16_DS: | |
14615 | case R_PPC64_ADDR16_HIGHER: | |
14616 | case R_PPC64_ADDR16_HIGHEST: | |
14617 | case R_PPC64_ADDR16_HIGHERA: | |
14618 | case R_PPC64_ADDR16_HIGHESTA: | |
14619 | case R_PPC64_ADDR14: | |
14620 | case R_PPC64_ADDR14_BRTAKEN: | |
14621 | case R_PPC64_ADDR14_BRNTAKEN: | |
14622 | case R_PPC64_REL32: | |
14623 | case R_PPC64_REL64: | |
14624 | return TRUE; | |
14625 | ||
14626 | default: | |
14627 | return FALSE; | |
14628 | } | |
14629 | } | |
14630 | ||
5bd4f169 AM |
14631 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14632 | to handle the relocations for a section. | |
14633 | ||
14634 | The relocs are always passed as Rela structures; if the section | |
14635 | actually uses Rel structures, the r_addend field will always be | |
14636 | zero. | |
14637 | ||
14638 | This function is responsible for adjust the section contents as | |
14639 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14640 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14641 | necessary. |
14642 | ||
14643 | This function does not have to worry about setting the reloc | |
14644 | address or the reloc symbol index. | |
14645 | ||
14646 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14647 | ||
14648 | LOCAL_SECTIONS is an array giving the section in the input file | |
14649 | corresponding to the st_shndx field of each local symbol. | |
14650 | ||
14651 | The global hash table entry for the global symbols can be found | |
14652 | via elf_sym_hashes (input_bfd). | |
14653 | ||
1049f94e | 14654 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14655 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14656 | going to be the section symbol corresponding to the output | |
14657 | section, which means that the addend must be adjusted | |
14658 | accordingly. */ | |
14659 | ||
b34976b6 | 14660 | static bfd_boolean |
4ce794b7 AM |
14661 | ppc64_elf_relocate_section (bfd *output_bfd, |
14662 | struct bfd_link_info *info, | |
14663 | bfd *input_bfd, | |
14664 | asection *input_section, | |
14665 | bfd_byte *contents, | |
14666 | Elf_Internal_Rela *relocs, | |
14667 | Elf_Internal_Sym *local_syms, | |
14668 | asection **local_sections) | |
5bd4f169 | 14669 | { |
65f38f15 | 14670 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14671 | Elf_Internal_Shdr *symtab_hdr; |
14672 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14673 | Elf_Internal_Rela *rel; |
c316a17c | 14674 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14675 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14676 | Elf_Internal_Rela outrel; |
14677 | bfd_byte *loc; | |
411e1bfb | 14678 | struct got_entry **local_got_ents; |
5bd4f169 | 14679 | bfd_vma TOCstart; |
b34976b6 AM |
14680 | bfd_boolean ret = TRUE; |
14681 | bfd_boolean is_opd; | |
794e51c0 AM |
14682 | /* Assume 'at' branch hints. */ |
14683 | bfd_boolean is_isa_v2 = TRUE; | |
e59a1001 | 14684 | bfd_boolean warned_dynamic = FALSE; |
95f0d0d2 | 14685 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14686 | |
65f38f15 | 14687 | /* Initialize howto table if needed. */ |
5bd4f169 | 14688 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14689 | ppc_howto_init (); |
14690 | ||
65f38f15 | 14691 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14692 | if (htab == NULL) |
14693 | return FALSE; | |
ee75fd95 AM |
14694 | |
14695 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14696 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14697 | return TRUE; |
14698 | ||
7af5d5c4 AM |
14699 | if (!is_ppc64_elf (input_bfd)) |
14700 | { | |
14701 | bfd_set_error (bfd_error_wrong_format); | |
14702 | return FALSE; | |
14703 | } | |
0ffa91dd | 14704 | |
411e1bfb | 14705 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14706 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14707 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14708 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14709 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14710 | |
c316a17c | 14711 | rel = wrel = relocs; |
5bd4f169 | 14712 | relend = relocs + input_section->reloc_count; |
c316a17c | 14713 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14714 | { |
04c9666a | 14715 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14716 | bfd_vma addend; |
5bd4f169 AM |
14717 | bfd_reloc_status_type r; |
14718 | Elf_Internal_Sym *sym; | |
14719 | asection *sec; | |
039b3fef AM |
14720 | struct elf_link_hash_entry *h_elf; |
14721 | struct ppc_link_hash_entry *h; | |
14722 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14723 | const char *sym_name; |
0d4792f7 | 14724 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14725 | bfd_vma toc_addend; |
f961d9dd AM |
14726 | unsigned char tls_mask, tls_gd, tls_type; |
14727 | unsigned char sym_type; | |
5bd4f169 | 14728 | bfd_vma relocation; |
23cedd1d | 14729 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14730 | bfd_boolean warned; |
bc30df16 | 14731 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14732 | unsigned int insn; |
e11840f9 | 14733 | unsigned int mask; |
721956f4 AM |
14734 | struct ppc_stub_hash_entry *stub_entry; |
14735 | bfd_vma max_br_offset; | |
14736 | bfd_vma from; | |
c316a17c | 14737 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14738 | reloc_howto_type *howto; |
14739 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14740 | uint64_t pinsn; |
14741 | bfd_vma offset; | |
5bd4f169 | 14742 | |
c316a17c AM |
14743 | again: |
14744 | orig_rel = *rel; | |
14745 | ||
4ce794b7 | 14746 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14747 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14748 | |
14749 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14750 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14751 | proper TOC base to use. */ | |
14752 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14753 | && wrel != relocs |
14754 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14755 | && is_opd) |
c316a17c | 14756 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14757 | |
4ce794b7 AM |
14758 | sym = NULL; |
14759 | sec = NULL; | |
039b3fef | 14760 | h_elf = NULL; |
4ce794b7 | 14761 | sym_name = NULL; |
b34976b6 AM |
14762 | unresolved_reloc = FALSE; |
14763 | warned = FALSE; | |
65f38f15 | 14764 | |
0b13192e | 14765 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14766 | { |
14767 | /* It's a local symbol. */ | |
74f0fb50 | 14768 | struct _opd_sec_data *opd; |
4025353c | 14769 | |
5bd4f169 AM |
14770 | sym = local_syms + r_symndx; |
14771 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14772 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14773 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14774 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14775 | opd = get_opd_info (sec); |
14776 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14777 | { |
51aecdc5 AM |
14778 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14779 | + rel->r_addend)]; | |
4025353c AM |
14780 | if (adjust == -1) |
14781 | relocation = 0; | |
14782 | else | |
4cc603a5 AM |
14783 | { |
14784 | /* If this is a relocation against the opd section sym | |
14785 | and we have edited .opd, adjust the reloc addend so | |
14786 | that ld -r and ld --emit-relocs output is correct. | |
14787 | If it is a reloc against some other .opd symbol, | |
14788 | then the symbol value will be adjusted later. */ | |
14789 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14790 | rel->r_addend += adjust; | |
14791 | else | |
14792 | relocation += adjust; | |
14793 | } | |
1e2f5b6e | 14794 | } |
5bd4f169 AM |
14795 | } |
14796 | else | |
14797 | { | |
62d887d4 L |
14798 | bfd_boolean ignored; |
14799 | ||
b2a8e766 AM |
14800 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14801 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14802 | h_elf, sec, relocation, |
62d887d4 | 14803 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14804 | sym_name = h_elf->root.root.string; |
14805 | sym_type = h_elf->type; | |
b69fdb4e AM |
14806 | if (sec != NULL |
14807 | && sec->owner == output_bfd | |
14808 | && strcmp (sec->name, ".opd") == 0) | |
14809 | { | |
14810 | /* This is a symbol defined in a linker script. All | |
14811 | such are defined in output sections, even those | |
14812 | defined by simple assignment from a symbol defined in | |
14813 | an input section. Transfer the symbol to an | |
14814 | appropriate input .opd section, so that a branch to | |
14815 | this symbol will be mapped to the location specified | |
14816 | by the opd entry. */ | |
14817 | struct bfd_link_order *lo; | |
14818 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14819 | if (lo->type == bfd_indirect_link_order) | |
14820 | { | |
14821 | asection *isec = lo->u.indirect.section; | |
14822 | if (h_elf->root.u.def.value >= isec->output_offset | |
14823 | && h_elf->root.u.def.value < (isec->output_offset | |
14824 | + isec->size)) | |
14825 | { | |
14826 | h_elf->root.u.def.value -= isec->output_offset; | |
14827 | h_elf->root.u.def.section = isec; | |
14828 | sec = isec; | |
14829 | break; | |
14830 | } | |
14831 | } | |
14832 | } | |
5bd4f169 | 14833 | } |
ed7007c1 | 14834 | h = ppc_elf_hash_entry (h_elf); |
5bd4f169 | 14835 | |
dbaa2011 | 14836 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14837 | { |
14838 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14839 | input_bfd, input_section, | |
0930cb30 | 14840 | contents, rel->r_offset); |
c316a17c AM |
14841 | wrel->r_offset = rel->r_offset; |
14842 | wrel->r_info = 0; | |
14843 | wrel->r_addend = 0; | |
14844 | ||
14845 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14846 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14847 | non-debug to preserve relocs in .eh_frame which the |
14848 | eh_frame editing code expects to be present. */ | |
14849 | if (bfd_link_relocatable (info) | |
14850 | && (input_section->flags & SEC_DEBUGGING)) | |
14851 | wrel--; | |
14852 | ||
14853 | continue; | |
14854 | } | |
ab96bf03 | 14855 | |
0e1862bb | 14856 | if (bfd_link_relocatable (info)) |
c316a17c | 14857 | goto copy_reloc; |
ab96bf03 | 14858 | |
f40da81b AM |
14859 | if (h != NULL && &h->elf == htab->elf.hgot) |
14860 | { | |
6f20ed8a | 14861 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14862 | sec = bfd_abs_section_ptr; |
14863 | unresolved_reloc = FALSE; | |
14864 | } | |
14865 | ||
951fd09b AM |
14866 | /* TLS optimizations. Replace instruction sequences and relocs |
14867 | based on information we collected in tls_optimize. We edit | |
14868 | RELOCS so that --emit-relocs will output something sensible | |
14869 | for the final instruction stream. */ | |
14870 | tls_mask = 0; | |
14871 | tls_gd = 0; | |
0d4792f7 | 14872 | toc_symndx = 0; |
727fc41e AM |
14873 | if (h != NULL) |
14874 | tls_mask = h->tls_mask; | |
14875 | else if (local_got_ents != NULL) | |
411e1bfb | 14876 | { |
e054468f AM |
14877 | struct plt_entry **local_plt = (struct plt_entry **) |
14878 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14879 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14880 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14881 | tls_mask = lgot_masks[r_symndx]; |
14882 | } | |
37da22e5 | 14883 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14884 | && (r_type == R_PPC64_TLS |
14885 | || r_type == R_PPC64_TLSGD | |
14886 | || r_type == R_PPC64_TLSLD)) | |
14887 | { | |
14888 | /* Check for toc tls entries. */ | |
f961d9dd | 14889 | unsigned char *toc_tls; |
0d4792f7 | 14890 | |
727fc41e AM |
14891 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14892 | &local_syms, rel, input_bfd)) | |
14893 | return FALSE; | |
0d4792f7 | 14894 | |
727fc41e AM |
14895 | if (toc_tls) |
14896 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14897 | } |
14898 | ||
14899 | /* Check that tls relocs are used with tls syms, and non-tls | |
14900 | relocs are used with non-tls syms. */ | |
cf35638d | 14901 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14902 | && r_type != R_PPC64_NONE |
14903 | && (h == NULL | |
039b3fef AM |
14904 | || h->elf.root.type == bfd_link_hash_defined |
14905 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 14906 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 14907 | { |
37da22e5 | 14908 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14909 | && (r_type == R_PPC64_TLS |
14910 | || r_type == R_PPC64_TLSGD | |
14911 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14912 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14913 | ; | |
14914 | else | |
25f53a85 | 14915 | info->callbacks->einfo |
1d483afe | 14916 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14917 | /* xgettext:c-format */ |
c1c8c1ef | 14918 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14919 | /* xgettext:c-format */ |
c1c8c1ef | 14920 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14921 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14922 | ppc64_elf_howto_table[r_type]->name, |
14923 | sym_name); | |
411e1bfb AM |
14924 | } |
14925 | ||
14926 | /* Ensure reloc mapping code below stays sane. */ | |
14927 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14928 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14929 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14930 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14931 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14932 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14933 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14934 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14935 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14936 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14937 | abort (); | |
0d4792f7 | 14938 | |
411e1bfb AM |
14939 | switch (r_type) |
14940 | { | |
14941 | default: | |
411e1bfb AM |
14942 | break; |
14943 | ||
ba761f19 | 14944 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14945 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
2365f8d7 | 14946 | if ((insn & (0x3fu << 26)) != 58u << 26) |
ba761f19 AM |
14947 | abort (); |
14948 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14949 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14950 | r_type = R_PPC64_TOC16_LO; |
14951 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14952 | break; | |
14953 | ||
411e1bfb AM |
14954 | case R_PPC64_TOC16: |
14955 | case R_PPC64_TOC16_LO: | |
14956 | case R_PPC64_TOC16_DS: | |
14957 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14958 | { |
14959 | /* Check for toc tls entries. */ | |
f961d9dd | 14960 | unsigned char *toc_tls; |
951fd09b | 14961 | int retval; |
411e1bfb | 14962 | |
3a71aa26 AM |
14963 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14964 | &local_syms, rel, input_bfd); | |
951fd09b | 14965 | if (retval == 0) |
411e1bfb AM |
14966 | return FALSE; |
14967 | ||
14968 | if (toc_tls) | |
14969 | { | |
951fd09b | 14970 | tls_mask = *toc_tls; |
411e1bfb AM |
14971 | if (r_type == R_PPC64_TOC16_DS |
14972 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14973 | { |
37da22e5 | 14974 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14975 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14976 | goto toctprel; | |
14977 | } | |
411e1bfb | 14978 | else |
951fd09b AM |
14979 | { |
14980 | /* If we found a GD reloc pair, then we might be | |
14981 | doing a GD->IE transition. */ | |
14982 | if (retval == 2) | |
14983 | { | |
b00a0a86 | 14984 | tls_gd = TLS_GDIE; |
37da22e5 AM |
14985 | if ((tls_mask & TLS_TLS) != 0 |
14986 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14987 | goto tls_ldgd_opt; |
951fd09b AM |
14988 | } |
14989 | else if (retval == 3) | |
14990 | { | |
37da22e5 AM |
14991 | if ((tls_mask & TLS_TLS) != 0 |
14992 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14993 | goto tls_ldgd_opt; |
951fd09b AM |
14994 | } |
14995 | } | |
411e1bfb AM |
14996 | } |
14997 | } | |
14998 | break; | |
14999 | ||
9d6ded02 AM |
15000 | case R_PPC64_GOT_TPREL16_HI: |
15001 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 15002 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
15003 | && (tls_mask & TLS_TPREL) == 0) |
15004 | { | |
15005 | rel->r_offset -= d_offset; | |
95f0d0d2 | 15006 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
15007 | r_type = R_PPC64_NONE; |
15008 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15009 | } | |
15010 | break; | |
15011 | ||
411e1bfb AM |
15012 | case R_PPC64_GOT_TPREL16_DS: |
15013 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 15014 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15015 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15016 | { |
81407a69 | 15017 | toctprel: |
95f0d0d2 | 15018 | insn = bfd_get_32 (input_bfd, |
c316a17c | 15019 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
15020 | insn &= 31 << 21; |
15021 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 15022 | bfd_put_32 (input_bfd, insn, |
c316a17c | 15023 | contents + rel->r_offset - d_offset); |
411e1bfb | 15024 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
15025 | if (toc_symndx != 0) |
15026 | { | |
15027 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 15028 | rel->r_addend = toc_addend; |
0d4792f7 AM |
15029 | /* We changed the symbol. Start over in order to |
15030 | get h, sym, sec etc. right. */ | |
c316a17c | 15031 | goto again; |
0d4792f7 AM |
15032 | } |
15033 | else | |
15034 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
15035 | } |
15036 | break; | |
15037 | ||
87c69f97 | 15038 | case R_PPC64_GOT_TPREL_PCREL34: |
c213164a AM |
15039 | if ((tls_mask & TLS_TLS) != 0 |
15040 | && (tls_mask & TLS_TPREL) == 0) | |
15041 | { | |
15042 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
15043 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15044 | pinsn <<= 32; | |
15045 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15046 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
15047 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
15048 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15049 | contents + rel->r_offset); | |
15050 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15051 | contents + rel->r_offset + 4); | |
15052 | r_type = R_PPC64_TPREL34; | |
15053 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15054 | } | |
15055 | break; | |
15056 | ||
411e1bfb | 15057 | case R_PPC64_TLS: |
37da22e5 | 15058 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15059 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15060 | { |
c213164a | 15061 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
15062 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
15063 | if (insn == 0) | |
c213164a AM |
15064 | break; |
15065 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 15066 | { |
c213164a AM |
15067 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15068 | /* Was PPC64_TLS which sits on insn boundary, now | |
15069 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
15070 | rel->r_offset += d_offset; | |
15071 | r_type = R_PPC64_TPREL16_LO; | |
15072 | if (toc_symndx != 0) | |
15073 | { | |
15074 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
15075 | rel->r_addend = toc_addend; | |
15076 | /* We changed the symbol. Start over in order to | |
15077 | get h, sym, sec etc. right. */ | |
15078 | goto again; | |
15079 | } | |
15080 | else | |
15081 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15082 | } | |
15083 | else if ((rel->r_offset & 3) == 1) | |
15084 | { | |
15085 | /* For pcrel IE to LE we already have the full | |
15086 | offset and thus don't need an addi here. A nop | |
15087 | or mr will do. */ | |
2365f8d7 | 15088 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
15089 | { |
15090 | /* Extract regs from addi rt,ra,si. */ | |
15091 | unsigned int rt = (insn >> 21) & 0x1f; | |
15092 | unsigned int ra = (insn >> 16) & 0x1f; | |
15093 | if (rt == ra) | |
15094 | insn = NOP; | |
15095 | else | |
15096 | { | |
15097 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
15098 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
15099 | insn |= (31u << 26) | (444u << 1); | |
15100 | } | |
15101 | } | |
15102 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 15103 | } |
411e1bfb AM |
15104 | } |
15105 | break; | |
15106 | ||
411e1bfb AM |
15107 | case R_PPC64_GOT_TLSGD16_HI: |
15108 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 15109 | tls_gd = TLS_GDIE; |
37da22e5 | 15110 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
15111 | goto tls_gdld_hi; |
15112 | break; | |
15113 | ||
411e1bfb AM |
15114 | case R_PPC64_GOT_TLSLD16_HI: |
15115 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 15116 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 15117 | { |
951fd09b AM |
15118 | tls_gdld_hi: |
15119 | if ((tls_mask & tls_gd) != 0) | |
15120 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
15121 | + R_PPC64_GOT_TPREL16_DS); | |
15122 | else | |
411e1bfb | 15123 | { |
4fe5ca5b | 15124 | rel->r_offset -= d_offset; |
95f0d0d2 | 15125 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 15126 | r_type = R_PPC64_NONE; |
411e1bfb | 15127 | } |
951fd09b | 15128 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
15129 | } |
15130 | break; | |
15131 | ||
951fd09b AM |
15132 | case R_PPC64_GOT_TLSGD16: |
15133 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 15134 | tls_gd = TLS_GDIE; |
37da22e5 | 15135 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 15136 | goto tls_ldgd_opt; |
951fd09b | 15137 | break; |
411e1bfb | 15138 | |
951fd09b AM |
15139 | case R_PPC64_GOT_TLSLD16: |
15140 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 15141 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 15142 | { |
b9f04fe0 | 15143 | unsigned int insn1, insn2; |
102890f0 AM |
15144 | |
15145 | tls_ldgd_opt: | |
727fc41e AM |
15146 | offset = (bfd_vma) -1; |
15147 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
15148 | __tls_get_addr calls, we must trust that the call | |
15149 | stays with its arg setup insns, ie. that the next | |
15150 | reloc is the __tls_get_addr call associated with | |
15151 | the current reloc. Edit both insns. */ | |
9737e8af | 15152 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
15153 | && rel + 1 < relend |
15154 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
9e7028aa AM |
15155 | htab->tls_get_addr_fd, |
15156 | htab->tga_desc_fd, | |
727fc41e | 15157 | htab->tls_get_addr, |
9e7028aa | 15158 | htab->tga_desc)) |
727fc41e | 15159 | offset = rel[1].r_offset; |
b86ac8e3 AM |
15160 | /* We read the low GOT_TLS (or TOC16) insn because we |
15161 | need to keep the destination reg. It may be | |
15162 | something other than the usual r3, and moved to r3 | |
15163 | before the call by intervening code. */ | |
95f0d0d2 | 15164 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 15165 | contents + rel->r_offset - d_offset); |
102890f0 | 15166 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 15167 | { |
102890f0 | 15168 | /* IE */ |
b86ac8e3 | 15169 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 15170 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 15171 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 15172 | if (offset != (bfd_vma) -1) |
f58d5a2d | 15173 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
15174 | if (r_type == R_PPC64_TOC16 |
15175 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 15176 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
15177 | else |
15178 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
15179 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
15180 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
15181 | } | |
15182 | else | |
15183 | { | |
15184 | /* LE */ | |
b86ac8e3 AM |
15185 | insn1 &= 0x1f << 21; |
15186 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
15187 | insn2 = 0x38630000; /* addi 3,3,0 */ |
15188 | if (tls_gd == 0) | |
951fd09b | 15189 | { |
102890f0 | 15190 | /* Was an LD reloc. */ |
71c4e95a | 15191 | r_symndx = STN_UNDEF; |
102890f0 | 15192 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 15193 | } |
102890f0 | 15194 | else if (toc_symndx != 0) |
3a71aa26 AM |
15195 | { |
15196 | r_symndx = toc_symndx; | |
15197 | rel->r_addend = toc_addend; | |
15198 | } | |
102890f0 AM |
15199 | r_type = R_PPC64_TPREL16_HA; |
15200 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
15201 | if (offset != (bfd_vma) -1) |
15202 | { | |
15203 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
15204 | R_PPC64_TPREL16_LO); | |
15205 | rel[1].r_offset = offset + d_offset; | |
15206 | rel[1].r_addend = rel->r_addend; | |
15207 | } | |
102890f0 | 15208 | } |
95f0d0d2 | 15209 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 15210 | contents + rel->r_offset - d_offset); |
727fc41e | 15211 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
15212 | { |
15213 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
15214 | if (offset + 8 <= input_section->size) | |
15215 | { | |
15216 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
15217 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
15218 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
15219 | } | |
15220 | } | |
727fc41e AM |
15221 | if ((tls_mask & tls_gd) == 0 |
15222 | && (tls_gd == 0 || toc_symndx != 0)) | |
15223 | { | |
15224 | /* We changed the symbol. Start over in order | |
15225 | to get h, sym, sec etc. right. */ | |
c316a17c | 15226 | goto again; |
727fc41e AM |
15227 | } |
15228 | } | |
15229 | break; | |
15230 | ||
87c69f97 | 15231 | case R_PPC64_GOT_TLSGD_PCREL34: |
c213164a AM |
15232 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
15233 | { | |
15234 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15235 | pinsn <<= 32; | |
15236 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15237 | if ((tls_mask & TLS_GDIE) != 0) | |
15238 | { | |
15239 | /* IE, pla -> pld */ | |
15240 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
87c69f97 | 15241 | r_type = R_PPC64_GOT_TPREL_PCREL34; |
c213164a AM |
15242 | } |
15243 | else | |
15244 | { | |
15245 | /* LE, pla pcrel -> paddi r13 */ | |
15246 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15247 | r_type = R_PPC64_TPREL34; | |
15248 | } | |
15249 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15250 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15251 | contents + rel->r_offset); | |
15252 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15253 | contents + rel->r_offset + 4); | |
15254 | } | |
15255 | break; | |
15256 | ||
87c69f97 | 15257 | case R_PPC64_GOT_TLSLD_PCREL34: |
c213164a AM |
15258 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
15259 | { | |
15260 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15261 | pinsn <<= 32; | |
15262 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15263 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15264 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15265 | contents + rel->r_offset); | |
15266 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15267 | contents + rel->r_offset + 4); | |
15268 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15269 | r_symndx = STN_UNDEF; | |
15270 | r_type = R_PPC64_TPREL34; | |
15271 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15272 | goto again; | |
15273 | } | |
15274 | break; | |
15275 | ||
727fc41e | 15276 | case R_PPC64_TLSGD: |
37da22e5 | 15277 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 15278 | && rel + 1 < relend) |
727fc41e | 15279 | { |
b9f04fe0 | 15280 | unsigned int insn2; |
5663e321 | 15281 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15282 | |
4a421c53 | 15283 | offset = rel->r_offset; |
5663e321 | 15284 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15285 | { |
15286 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15287 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15288 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15289 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15290 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15291 | break; | |
15292 | } | |
15293 | ||
15294 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15295 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15296 | ||
b00a0a86 | 15297 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
15298 | { |
15299 | /* IE */ | |
15300 | r_type = R_PPC64_NONE; | |
15301 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
15302 | } | |
15303 | else | |
15304 | { | |
15305 | /* LE */ | |
15306 | if (toc_symndx != 0) | |
15307 | { | |
15308 | r_symndx = toc_symndx; | |
15309 | rel->r_addend = toc_addend; | |
15310 | } | |
c213164a AM |
15311 | if (r_type1 == R_PPC64_REL24_NOTOC |
15312 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15313 | { | |
15314 | r_type = R_PPC64_NONE; | |
15315 | insn2 = NOP; | |
15316 | } | |
15317 | else | |
15318 | { | |
15319 | rel->r_offset = offset + d_offset; | |
15320 | r_type = R_PPC64_TPREL16_LO; | |
15321 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15322 | } | |
727fc41e AM |
15323 | } |
15324 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15325 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15326 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15327 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15328 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15329 | if ((tls_mask & TLS_GDIE) == 0 |
15330 | && toc_symndx != 0 | |
15331 | && r_type != R_PPC64_NONE) | |
c316a17c | 15332 | goto again; |
411e1bfb | 15333 | } |
411e1bfb AM |
15334 | break; |
15335 | ||
727fc41e | 15336 | case R_PPC64_TLSLD: |
37da22e5 | 15337 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 15338 | && rel + 1 < relend) |
727fc41e | 15339 | { |
b9f04fe0 | 15340 | unsigned int insn2; |
5663e321 | 15341 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15342 | |
4a421c53 | 15343 | offset = rel->r_offset; |
5663e321 | 15344 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15345 | { |
15346 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15347 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15348 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15349 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15350 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15351 | break; | |
15352 | } | |
15353 | ||
15354 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15355 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15356 | ||
c213164a AM |
15357 | if (r_type1 == R_PPC64_REL24_NOTOC |
15358 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15359 | { | |
15360 | r_type = R_PPC64_NONE; | |
15361 | insn2 = NOP; | |
15362 | } | |
15363 | else | |
15364 | { | |
15365 | rel->r_offset = offset + d_offset; | |
15366 | r_symndx = STN_UNDEF; | |
15367 | r_type = R_PPC64_TPREL16_LO; | |
15368 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15369 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15370 | } | |
727fc41e | 15371 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
15372 | /* Zap the reloc on the _tls_get_addr call too. */ |
15373 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15374 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15375 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15376 | if (r_type != R_PPC64_NONE) |
15377 | goto again; | |
727fc41e AM |
15378 | } |
15379 | break; | |
15380 | ||
411e1bfb | 15381 | case R_PPC64_DTPMOD64: |
951fd09b AM |
15382 | if (rel + 1 < relend |
15383 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
15384 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 15385 | { |
951fd09b AM |
15386 | if ((tls_mask & TLS_GD) == 0) |
15387 | { | |
15388 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 15389 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
15390 | r_type = R_PPC64_TPREL64; |
15391 | else | |
15392 | { | |
4ce794b7 | 15393 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
15394 | r_type = R_PPC64_NONE; |
15395 | } | |
15396 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15397 | } | |
15398 | } | |
15399 | else | |
15400 | { | |
15401 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15402 | { |
4ce794b7 | 15403 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15404 | r_type = R_PPC64_NONE; |
951fd09b | 15405 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15406 | } |
411e1bfb AM |
15407 | } |
15408 | break; | |
15409 | ||
15410 | case R_PPC64_TPREL64: | |
951fd09b | 15411 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15412 | { |
15413 | r_type = R_PPC64_NONE; | |
15414 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15415 | } | |
15416 | break; | |
52a82034 | 15417 | |
006589cf AM |
15418 | case R_PPC64_ENTRY: |
15419 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15420 | if (!bfd_link_pic (info) | |
15421 | && !info->traditional_format | |
15422 | && relocation + 0x80008000 <= 0xffffffff) | |
15423 | { | |
15424 | unsigned int insn1, insn2; | |
15425 | ||
15426 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15427 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15428 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15429 | && insn2 == ADD_R2_R2_R12) | |
15430 | { | |
95f0d0d2 | 15431 | bfd_put_32 (input_bfd, |
006589cf AM |
15432 | LIS_R2 + PPC_HA (relocation), |
15433 | contents + rel->r_offset); | |
95f0d0d2 | 15434 | bfd_put_32 (input_bfd, |
006589cf AM |
15435 | ADDI_R2_R2 + PPC_LO (relocation), |
15436 | contents + rel->r_offset + 4); | |
15437 | } | |
15438 | } | |
15439 | else | |
15440 | { | |
15441 | relocation -= (rel->r_offset | |
15442 | + input_section->output_offset | |
15443 | + input_section->output_section->vma); | |
15444 | if (relocation + 0x80008000 <= 0xffffffff) | |
15445 | { | |
15446 | unsigned int insn1, insn2; | |
15447 | ||
15448 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15449 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15450 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15451 | && insn2 == ADD_R2_R2_R12) | |
15452 | { | |
95f0d0d2 | 15453 | bfd_put_32 (input_bfd, |
006589cf AM |
15454 | ADDIS_R2_R12 + PPC_HA (relocation), |
15455 | contents + rel->r_offset); | |
95f0d0d2 | 15456 | bfd_put_32 (input_bfd, |
006589cf AM |
15457 | ADDI_R2_R2 + PPC_LO (relocation), |
15458 | contents + rel->r_offset + 4); | |
15459 | } | |
15460 | } | |
15461 | } | |
15462 | break; | |
15463 | ||
52a82034 AM |
15464 | case R_PPC64_REL16_HA: |
15465 | /* If we are generating a non-PIC executable, edit | |
15466 | . 0: addis 2,12,.TOC.-0b@ha | |
15467 | . addi 2,2,.TOC.-0b@l | |
15468 | used by ELFv2 global entry points to set up r2, to | |
15469 | . lis 2,.TOC.@ha | |
15470 | . addi 2,2,.TOC.@l | |
15471 | if .TOC. is in range. */ | |
0e1862bb | 15472 | if (!bfd_link_pic (info) |
810d4e75 | 15473 | && !info->traditional_format |
006589cf | 15474 | && !htab->opd_abi |
4f038ee5 | 15475 | && rel->r_addend == d_offset |
52a82034 AM |
15476 | && h != NULL && &h->elf == htab->elf.hgot |
15477 | && rel + 1 < relend | |
15478 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15479 | && rel[1].r_offset == rel->r_offset + 4 | |
15480 | && rel[1].r_addend == rel->r_addend + 4 | |
15481 | && relocation + 0x80008000 <= 0xffffffff) | |
15482 | { | |
15483 | unsigned int insn1, insn2; | |
4a421c53 | 15484 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
15485 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15486 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15487 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15488 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15489 | { |
15490 | r_type = R_PPC64_ADDR16_HA; | |
15491 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15492 | rel->r_addend -= d_offset; | |
15493 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15494 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15495 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15496 | } |
15497 | } | |
15498 | break; | |
411e1bfb AM |
15499 | } |
15500 | ||
15501 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15502 | insn = 0; |
b25116a9 AM |
15503 | max_br_offset = 1 << 25; |
15504 | addend = rel->r_addend; | |
bc30df16 | 15505 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15506 | switch (r_type) |
5bd4f169 AM |
15507 | { |
15508 | default: | |
65f38f15 | 15509 | break; |
5bd4f169 | 15510 | |
3b421ab3 AM |
15511 | case R_PPC64_TOCSAVE: |
15512 | if (relocation + addend == (rel->r_offset | |
15513 | + input_section->output_offset | |
15514 | + input_section->output_section->vma) | |
15515 | && tocsave_find (htab, NO_INSERT, | |
15516 | &local_syms, rel, input_bfd)) | |
15517 | { | |
15518 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15519 | if (insn == NOP | |
15520 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15521 | bfd_put_32 (input_bfd, |
15522 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15523 | contents + rel->r_offset); |
15524 | } | |
15525 | break; | |
15526 | ||
65f38f15 AM |
15527 | /* Branch taken prediction relocations. */ |
15528 | case R_PPC64_ADDR14_BRTAKEN: | |
15529 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15530 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15531 | /* Fall through. */ |
65f38f15 | 15532 | |
86c76c7b | 15533 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15534 | case R_PPC64_ADDR14_BRNTAKEN: |
15535 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15536 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15537 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15538 | /* Fall through. */ |
86c76c7b | 15539 | |
b25116a9 AM |
15540 | case R_PPC64_REL14: |
15541 | max_br_offset = 1 << 15; | |
1a0670f3 | 15542 | /* Fall through. */ |
5bd4f169 | 15543 | |
65f38f15 | 15544 | case R_PPC64_REL24: |
05d0e962 | 15545 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15546 | case R_PPC64_PLTCALL: |
5663e321 | 15547 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
15548 | /* Calls to functions with a different TOC, such as calls to |
15549 | shared objects, need to alter the TOC pointer. This is | |
15550 | done using a linkage stub. A REL24 branching to these | |
15551 | linkage stubs needs to be followed by a nop, as the nop | |
15552 | will be replaced with an instruction to restore the TOC | |
15553 | base pointer. */ | |
8387904d | 15554 | fdh = h; |
b31867b6 AM |
15555 | if (h != NULL |
15556 | && h->oh != NULL | |
15557 | && h->oh->is_func_descriptor) | |
15558 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15559 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15560 | htab); | |
5663e321 AM |
15561 | if ((r_type == R_PPC64_PLTCALL |
15562 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 15563 | && stub_entry != NULL |
05d0e962 AM |
15564 | && stub_entry->stub_type >= ppc_stub_plt_call |
15565 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15566 | stub_entry = NULL; |
15567 | ||
6abec6bc | 15568 | if (stub_entry != NULL |
d0abeec8 AM |
15569 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
15570 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 15571 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15572 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15573 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15574 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15575 | { |
b25116a9 | 15576 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 15577 | |
6e1816be AM |
15578 | if (stub_entry->stub_type == ppc_stub_plt_call |
15579 | && !htab->opd_abi | |
15580 | && htab->params->plt_localentry0 != 0 | |
15581 | && is_elfv2_localentry0 (&h->elf)) | |
15582 | { | |
15583 | /* The function doesn't use or change r2. */ | |
15584 | can_plt_call = TRUE; | |
15585 | } | |
05d0e962 AM |
15586 | else if (r_type == R_PPC64_REL24_NOTOC) |
15587 | { | |
15588 | /* NOTOC calls don't need to restore r2. */ | |
15589 | can_plt_call = TRUE; | |
15590 | } | |
6e1816be | 15591 | |
f378ab09 | 15592 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15593 | branch and link followed by a nop. The nop is |
15594 | replaced by an insn to restore r2. */ | |
6e1816be | 15595 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15596 | { |
ba8ca3e7 AM |
15597 | unsigned long br; |
15598 | ||
15599 | br = bfd_get_32 (input_bfd, | |
15600 | contents + rel->r_offset); | |
15601 | if ((br & 1) != 0) | |
41bd81ab | 15602 | { |
ba8ca3e7 AM |
15603 | unsigned long nop; |
15604 | ||
15605 | nop = bfd_get_32 (input_bfd, | |
15606 | contents + rel->r_offset + 4); | |
23cedd1d AM |
15607 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
15608 | can_plt_call = TRUE; | |
15609 | else if (nop == NOP | |
15610 | || nop == CROR_151515 | |
15611 | || nop == CROR_313131) | |
a7f2871e | 15612 | { |
ba8ca3e7 | 15613 | if (h != NULL |
ed7007c1 | 15614 | && is_tls_get_addr (&h->elf, htab) |
7c9cf415 | 15615 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15616 | { |
15617 | /* Special stub used, leave nop alone. */ | |
15618 | } | |
15619 | else | |
a078d95a AM |
15620 | bfd_put_32 (input_bfd, |
15621 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
15622 | contents + rel->r_offset + 4); |
15623 | can_plt_call = TRUE; | |
a7f2871e | 15624 | } |
41bd81ab | 15625 | } |
5bd4f169 | 15626 | } |
721956f4 | 15627 | |
ba8ca3e7 | 15628 | if (!can_plt_call && h != NULL) |
721956f4 | 15629 | { |
ba8ca3e7 AM |
15630 | const char *name = h->elf.root.root.string; |
15631 | ||
15632 | if (*name == '.') | |
15633 | ++name; | |
15634 | ||
15635 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
15636 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 15637 | { |
ba8ca3e7 AM |
15638 | /* Allow crt1 branch to go via a toc adjusting |
15639 | stub. Other calls that never return could do | |
15640 | the same, if we could detect such. */ | |
b25116a9 | 15641 | can_plt_call = TRUE; |
6ab189d5 | 15642 | } |
ba8ca3e7 AM |
15643 | } |
15644 | ||
15645 | if (!can_plt_call) | |
15646 | { | |
15647 | /* g++ as of 20130507 emits self-calls without a | |
15648 | following nop. This is arguably wrong since we | |
15649 | have conflicting information. On the one hand a | |
15650 | global symbol and on the other a local call | |
15651 | sequence, but don't error for this special case. | |
15652 | It isn't possible to cheaply verify we have | |
15653 | exactly such a call. Allow all calls to the same | |
15654 | section. */ | |
15655 | asection *code_sec = sec; | |
15656 | ||
15657 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15658 | { |
ba8ca3e7 AM |
15659 | bfd_vma off = (relocation + addend |
15660 | - sec->output_section->vma | |
15661 | - sec->output_offset); | |
bc30df16 | 15662 | |
ba8ca3e7 | 15663 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 15664 | } |
ba8ca3e7 AM |
15665 | if (code_sec == input_section) |
15666 | can_plt_call = TRUE; | |
15667 | } | |
15668 | ||
15669 | if (!can_plt_call) | |
15670 | { | |
05d0e962 AM |
15671 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15672 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15673 | info->callbacks->einfo |
695344c0 | 15674 | /* xgettext:c-format */ |
c1c8c1ef | 15675 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15676 | "(plt call stub)\n"), |
4805fc55 AM |
15677 | input_bfd, input_section, rel->r_offset, sym_name); |
15678 | else | |
15679 | info->callbacks->einfo | |
695344c0 | 15680 | /* xgettext:c-format */ |
c1c8c1ef | 15681 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15682 | "(toc save/adjust stub)\n"), |
4805fc55 | 15683 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15684 | |
15685 | bfd_set_error (bfd_error_bad_value); | |
15686 | ret = FALSE; | |
721956f4 AM |
15687 | } |
15688 | ||
b25116a9 | 15689 | if (can_plt_call |
05d0e962 AM |
15690 | && stub_entry->stub_type >= ppc_stub_plt_call |
15691 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15692 | unresolved_reloc = FALSE; |
15693 | } | |
15694 | ||
6abec6bc AM |
15695 | if ((stub_entry == NULL |
15696 | || stub_entry->stub_type == ppc_stub_long_branch | |
15697 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15698 | && get_opd_info (sec) != NULL) |
15699 | { | |
15700 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15701 | bfd_vma off = (relocation + addend |
15702 | - sec->output_section->vma | |
15703 | - sec->output_offset); | |
aef36ac1 | 15704 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15705 | if (dest != (bfd_vma) -1) |
15706 | { | |
15707 | relocation = dest; | |
15708 | addend = 0; | |
bc30df16 | 15709 | reloc_dest = DEST_OPD; |
8387904d AM |
15710 | } |
15711 | } | |
15712 | ||
b25116a9 AM |
15713 | /* If the branch is out of reach we ought to have a long |
15714 | branch stub. */ | |
15715 | from = (rel->r_offset | |
15716 | + input_section->output_offset | |
15717 | + input_section->output_section->vma); | |
15718 | ||
6911b7dc AM |
15719 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15720 | ? fdh->elf.other | |
15721 | : sym->st_other); | |
15722 | ||
6abec6bc AM |
15723 | if (stub_entry != NULL |
15724 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15725 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15726 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15727 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15728 | || (relocation + addend - from + max_br_offset | |
15729 | < 2 * max_br_offset))) | |
15730 | /* Don't use the stub if this branch is in range. */ | |
15731 | stub_entry = NULL; | |
b25116a9 | 15732 | |
05d0e962 AM |
15733 | if (stub_entry != NULL |
15734 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15735 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15736 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15737 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15738 | && (r_type != R_PPC64_REL24_NOTOC | |
15739 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15740 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15741 | && (relocation + addend - from + max_br_offset |
15742 | < 2 * max_br_offset)) | |
15743 | stub_entry = NULL; | |
15744 | ||
15745 | if (stub_entry != NULL | |
15746 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15747 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15748 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15749 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15750 | && r_type == R_PPC64_REL24_NOTOC | |
15751 | && (relocation + addend - from + max_br_offset | |
15752 | < 2 * max_br_offset)) | |
15753 | stub_entry = NULL; | |
15754 | ||
b25116a9 AM |
15755 | if (stub_entry != NULL) |
15756 | { | |
15757 | /* Munge up the value and addend so that we call the stub | |
15758 | rather than the procedure directly. */ | |
a4b6fadd AM |
15759 | asection *stub_sec = stub_entry->group->stub_sec; |
15760 | ||
15761 | if (stub_entry->stub_type == ppc_stub_save_res) | |
15762 | relocation += (stub_sec->output_offset | |
15763 | + stub_sec->output_section->vma | |
15764 | + stub_sec->size - htab->sfpr->size | |
15765 | - htab->sfpr->output_offset | |
15766 | - htab->sfpr->output_section->vma); | |
15767 | else | |
15768 | relocation = (stub_entry->stub_offset | |
15769 | + stub_sec->output_offset | |
15770 | + stub_sec->output_section->vma); | |
b25116a9 | 15771 | addend = 0; |
bc30df16 | 15772 | reloc_dest = DEST_STUB; |
3b421ab3 | 15773 | |
05d0e962 AM |
15774 | if (((stub_entry->stub_type == ppc_stub_plt_call |
15775 | && ALWAYS_EMIT_R2SAVE) | |
15776 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
15777 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 | 15778 | && !(h != NULL |
ed7007c1 | 15779 | && is_tls_get_addr (&h->elf, htab) |
e81b4c93 | 15780 | && htab->params->tls_get_addr_opt) |
3b421ab3 AM |
15781 | && rel + 1 < relend |
15782 | && rel[1].r_offset == rel->r_offset + 4 | |
15783 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
15784 | relocation += 4; | |
05d0e962 AM |
15785 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
15786 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
15787 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
15788 | && r_type == R_PPC64_REL24_NOTOC) | |
15789 | relocation += 4; | |
5663e321 AM |
15790 | |
15791 | if (r_type == R_PPC64_REL24_NOTOC | |
15792 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
15793 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
15794 | htab->notoc_plt = 1; | |
b25116a9 AM |
15795 | } |
15796 | ||
15797 | if (insn != 0) | |
15798 | { | |
794e51c0 | 15799 | if (is_isa_v2) |
721956f4 | 15800 | { |
b25116a9 AM |
15801 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
15802 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
15803 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
15804 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
15805 | insn |= 0x02 << 21; | |
15806 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
15807 | insn |= 0x08 << 21; | |
15808 | else | |
15809 | break; | |
15810 | } | |
15811 | else | |
15812 | { | |
15813 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 15814 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 15815 | insn ^= 0x01 << 21; |
721956f4 | 15816 | } |
b25116a9 | 15817 | |
95f0d0d2 | 15818 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 15819 | } |
e86ce104 | 15820 | |
06da1e8e AM |
15821 | /* NOP out calls to undefined weak functions. |
15822 | We can thus call a weak function without first | |
15823 | checking whether the function is defined. */ | |
b25116a9 | 15824 | else if (h != NULL |
039b3fef | 15825 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 15826 | && h->elf.dynindx == -1 |
05d0e962 AM |
15827 | && (r_type == R_PPC64_REL24 |
15828 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 15829 | && relocation == 0 |
4cc603a5 | 15830 | && addend == 0) |
e86ce104 | 15831 | { |
95f0d0d2 | 15832 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 15833 | goto copy_reloc; |
e86ce104 | 15834 | } |
65f38f15 | 15835 | break; |
066f4018 AM |
15836 | |
15837 | case R_PPC64_GOT16_DS: | |
06507dab AM |
15838 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
15839 | break; | |
066f4018 AM |
15840 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
15841 | if (relocation + addend - from + 0x8000 < 0x10000 | |
15842 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15843 | { | |
15844 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 15845 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
15846 | { |
15847 | insn += (14u << 26) - (58u << 26); | |
15848 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15849 | r_type = R_PPC64_TOC16; | |
15850 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15851 | } | |
15852 | } | |
15853 | break; | |
15854 | ||
15855 | case R_PPC64_GOT16_LO_DS: | |
15856 | case R_PPC64_GOT16_HA: | |
06507dab AM |
15857 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
15858 | break; | |
066f4018 AM |
15859 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
15860 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
15861 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15862 | { | |
15863 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 15864 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
15865 | { |
15866 | insn += (14u << 26) - (58u << 26); | |
15867 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15868 | r_type = R_PPC64_TOC16_LO; | |
15869 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15870 | } | |
2365f8d7 | 15871 | else if ((insn & (0x3fu << 26)) == 15u << 26 /* addis */) |
066f4018 AM |
15872 | { |
15873 | r_type = R_PPC64_TOC16_HA; | |
15874 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15875 | } | |
15876 | } | |
15877 | break; | |
4a421c53 AM |
15878 | |
15879 | case R_PPC64_GOT_PCREL34: | |
06507dab AM |
15880 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
15881 | break; | |
4a421c53 AM |
15882 | from = (rel->r_offset |
15883 | + input_section->output_section->vma | |
15884 | + input_section->output_offset); | |
15885 | if (relocation - from + (1ULL << 33) < 1ULL << 34 | |
15886 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15887 | { | |
15888 | offset = rel->r_offset; | |
15889 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15890 | pinsn <<= 32; | |
15891 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15892 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15893 | == ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
15894 | { | |
15895 | /* Replace with paddi. */ | |
15896 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
15897 | r_type = R_PPC64_PCREL34; | |
15898 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15899 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
15900 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
15901 | goto pcrelopt; | |
15902 | } | |
15903 | } | |
15904 | break; | |
15905 | ||
15906 | case R_PPC64_PCREL34: | |
15907 | if (SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15908 | { | |
15909 | offset = rel->r_offset; | |
15910 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15911 | pinsn <<= 32; | |
15912 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15913 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15914 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
15915 | | (14ULL << 26) /* paddi */)) | |
15916 | { | |
15917 | pcrelopt: | |
15918 | if (rel + 1 < relend | |
15919 | && rel[1].r_offset == offset | |
15920 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT)) | |
15921 | { | |
15922 | bfd_vma off2 = rel[1].r_addend; | |
15923 | if (off2 == 0) | |
15924 | /* zero means next insn. */ | |
15925 | off2 = 8; | |
15926 | off2 += offset; | |
15927 | if (off2 + 4 <= input_section->size) | |
15928 | { | |
15929 | uint64_t pinsn2; | |
dd9b12c2 | 15930 | bfd_signed_vma addend_off; |
4a421c53 AM |
15931 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); |
15932 | pinsn2 <<= 32; | |
15933 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
77486630 AM |
15934 | { |
15935 | if (off2 + 8 > input_section->size) | |
15936 | break; | |
15937 | pinsn2 |= bfd_get_32 (input_bfd, | |
15938 | contents + off2 + 4); | |
15939 | } | |
dd9b12c2 | 15940 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) |
4a421c53 | 15941 | { |
dd9b12c2 AM |
15942 | addend += addend_off; |
15943 | rel->r_addend = addend; | |
4a421c53 AM |
15944 | bfd_put_32 (input_bfd, pinsn >> 32, |
15945 | contents + offset); | |
15946 | bfd_put_32 (input_bfd, pinsn, | |
15947 | contents + offset + 4); | |
15948 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
15949 | contents + off2); | |
77486630 AM |
15950 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
15951 | bfd_put_32 (input_bfd, pinsn2, | |
15952 | contents + off2 + 4); | |
4a421c53 AM |
15953 | } |
15954 | } | |
15955 | } | |
15956 | } | |
15957 | } | |
15958 | break; | |
65f38f15 | 15959 | } |
5bd4f169 | 15960 | |
411e1bfb | 15961 | tls_type = 0; |
23cedd1d | 15962 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
15963 | switch (r_type) |
15964 | { | |
15965 | default: | |
cf97bcb0 AM |
15966 | /* xgettext:c-format */ |
15967 | _bfd_error_handler (_("%pB: %s unsupported"), | |
15968 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 15969 | |
65f38f15 | 15970 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15971 | ret = FALSE; |
c316a17c | 15972 | goto copy_reloc; |
5bd4f169 | 15973 | |
65f38f15 | 15974 | case R_PPC64_NONE: |
411e1bfb | 15975 | case R_PPC64_TLS: |
727fc41e AM |
15976 | case R_PPC64_TLSGD: |
15977 | case R_PPC64_TLSLD: | |
3b421ab3 | 15978 | case R_PPC64_TOCSAVE: |
04c9666a AM |
15979 | case R_PPC64_GNU_VTINHERIT: |
15980 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 15981 | case R_PPC64_ENTRY: |
4a421c53 | 15982 | case R_PPC64_PCREL_OPT: |
c316a17c | 15983 | goto copy_reloc; |
5bd4f169 AM |
15984 | |
15985 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
15986 | address in the GOT as relocation value instead of the | |
411e1bfb | 15987 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 15988 | symbol and put the symbol value there. */ |
411e1bfb AM |
15989 | case R_PPC64_GOT_TLSGD16: |
15990 | case R_PPC64_GOT_TLSGD16_LO: | |
15991 | case R_PPC64_GOT_TLSGD16_HI: | |
15992 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 15993 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 15994 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
15995 | goto dogot; |
15996 | ||
15997 | case R_PPC64_GOT_TLSLD16: | |
15998 | case R_PPC64_GOT_TLSLD16_LO: | |
15999 | case R_PPC64_GOT_TLSLD16_HI: | |
16000 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 16001 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 16002 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
16003 | goto dogot; |
16004 | ||
16005 | case R_PPC64_GOT_TPREL16_DS: | |
16006 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16007 | case R_PPC64_GOT_TPREL16_HI: | |
16008 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 16009 | case R_PPC64_GOT_TPREL_PCREL34: |
411e1bfb AM |
16010 | tls_type = TLS_TLS | TLS_TPREL; |
16011 | goto dogot; | |
16012 | ||
16013 | case R_PPC64_GOT_DTPREL16_DS: | |
16014 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16015 | case R_PPC64_GOT_DTPREL16_HI: | |
16016 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 16017 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
16018 | tls_type = TLS_TLS | TLS_DTPREL; |
16019 | goto dogot; | |
16020 | ||
65f38f15 AM |
16021 | case R_PPC64_GOT16: |
16022 | case R_PPC64_GOT16_LO: | |
16023 | case R_PPC64_GOT16_HI: | |
16024 | case R_PPC64_GOT16_HA: | |
16025 | case R_PPC64_GOT16_DS: | |
16026 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 16027 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 16028 | dogot: |
5bd4f169 AM |
16029 | { |
16030 | /* Relocation is to the entry for this symbol in the global | |
16031 | offset table. */ | |
e717da7e | 16032 | asection *got; |
d881513a | 16033 | bfd_vma *offp; |
5bd4f169 | 16034 | bfd_vma off; |
d881513a | 16035 | unsigned long indx = 0; |
927be08e | 16036 | struct got_entry *ent; |
65f38f15 | 16037 | |
d881513a | 16038 | if (tls_type == (TLS_TLS | TLS_LD) |
f749f26e | 16039 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
927be08e | 16040 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 16041 | else |
5bd4f169 | 16042 | { |
d881513a AM |
16043 | if (h != NULL) |
16044 | { | |
f0158f44 AM |
16045 | if (!htab->elf.dynamic_sections_created |
16046 | || h->elf.dynindx == -1 | |
16047 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 16048 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
16049 | /* This is actually a static link, or it is a |
16050 | -Bsymbolic link and the symbol is defined | |
16051 | locally, or the symbol was forced to be local | |
16052 | because of a version file. */ | |
16053 | ; | |
16054 | else | |
16055 | { | |
039b3fef | 16056 | indx = h->elf.dynindx; |
d881513a AM |
16057 | unresolved_reloc = FALSE; |
16058 | } | |
039b3fef | 16059 | ent = h->elf.got.glist; |
d881513a | 16060 | } |
411e1bfb | 16061 | else |
5bd4f169 | 16062 | { |
d881513a AM |
16063 | if (local_got_ents == NULL) |
16064 | abort (); | |
16065 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 16066 | } |
d881513a AM |
16067 | |
16068 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 16069 | if (ent->addend == orig_rel.r_addend |
e717da7e | 16070 | && ent->owner == input_bfd |
d881513a AM |
16071 | && ent->tls_type == tls_type) |
16072 | break; | |
5bd4f169 | 16073 | } |
411e1bfb | 16074 | |
927be08e AM |
16075 | if (ent == NULL) |
16076 | abort (); | |
16077 | if (ent->is_indirect) | |
16078 | ent = ent->got.ent; | |
16079 | offp = &ent->got.offset; | |
16080 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
16081 | if (got == NULL) |
16082 | abort (); | |
16083 | ||
411e1bfb AM |
16084 | /* The offset must always be a multiple of 8. We use the |
16085 | least significant bit to record whether we have already | |
16086 | processed this entry. */ | |
d881513a | 16087 | off = *offp; |
411e1bfb AM |
16088 | if ((off & 1) != 0) |
16089 | off &= ~1; | |
5bd4f169 AM |
16090 | else |
16091 | { | |
411e1bfb AM |
16092 | /* Generate relocs for the dynamic linker, except in |
16093 | the case of TLSLD where we'll use one entry per | |
16094 | module. */ | |
25f23106 AM |
16095 | asection *relgot; |
16096 | bfd_boolean ifunc; | |
e717da7e | 16097 | |
d881513a | 16098 | *offp = off | 1; |
25f23106 AM |
16099 | relgot = NULL; |
16100 | ifunc = (h != NULL | |
16101 | ? h->elf.type == STT_GNU_IFUNC | |
16102 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 16103 | if (ifunc) |
82e66161 AM |
16104 | { |
16105 | relgot = htab->elf.irelplt; | |
16106 | if (indx == 0) | |
16107 | htab->local_ifunc_resolver = 1; | |
16108 | else if (is_static_defined (&h->elf)) | |
16109 | htab->maybe_local_ifunc_resolver = 1; | |
16110 | } | |
f0158f44 AM |
16111 | else if (indx != 0 |
16112 | || (bfd_link_pic (info) | |
16113 | && (h == NULL | |
f749f26e AM |
16114 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
16115 | && !(tls_type != 0 | |
f15d0b54 AM |
16116 | && bfd_link_executable (info) |
16117 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 16118 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 16119 | if (relgot != NULL) |
5bd4f169 | 16120 | { |
e717da7e AM |
16121 | outrel.r_offset = (got->output_section->vma |
16122 | + got->output_offset | |
411e1bfb | 16123 | + off); |
133a1f60 | 16124 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 16125 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 16126 | { |
411e1bfb | 16127 | outrel.r_addend = 0; |
e515b051 | 16128 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
16129 | if (tls_type == (TLS_TLS | TLS_GD)) |
16130 | { | |
e717da7e AM |
16131 | loc = relgot->contents; |
16132 | loc += (relgot->reloc_count++ | |
d881513a AM |
16133 | * sizeof (Elf64_External_Rela)); |
16134 | bfd_elf64_swap_reloca_out (output_bfd, | |
16135 | &outrel, loc); | |
e515b051 | 16136 | outrel.r_offset += 8; |
133a1f60 | 16137 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
16138 | outrel.r_info |
16139 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 16140 | } |
411e1bfb | 16141 | } |
951fd09b | 16142 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 16143 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 16144 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 16145 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
16146 | else if (indx != 0) |
16147 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
16148 | else | |
81407a69 | 16149 | { |
25f23106 AM |
16150 | if (ifunc) |
16151 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16152 | else | |
16153 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
16154 | |
16155 | /* Write the .got section contents for the sake | |
16156 | of prelink. */ | |
e717da7e | 16157 | loc = got->contents + off; |
23fbd6fa JJ |
16158 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
16159 | loc); | |
81407a69 | 16160 | } |
81407a69 AM |
16161 | |
16162 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
16163 | { |
16164 | outrel.r_addend += relocation; | |
16165 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
16166 | { |
16167 | if (htab->elf.tls_sec == NULL) | |
16168 | outrel.r_addend = 0; | |
16169 | else | |
16170 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
16171 | } | |
e515b051 | 16172 | } |
e717da7e AM |
16173 | loc = relgot->contents; |
16174 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
16175 | * sizeof (Elf64_External_Rela)); |
16176 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
16177 | } | |
16178 | ||
ad8e1ba5 | 16179 | /* Init the .got section contents here if we're not |
81407a69 | 16180 | emitting a reloc. */ |
d881513a | 16181 | else |
411e1bfb | 16182 | { |
133a1f60 | 16183 | relocation += orig_rel.r_addend; |
f0158f44 | 16184 | if (tls_type != 0) |
411e1bfb | 16185 | { |
989f9879 AM |
16186 | if (htab->elf.tls_sec == NULL) |
16187 | relocation = 0; | |
16188 | else | |
16189 | { | |
f0158f44 AM |
16190 | if (tls_type & TLS_LD) |
16191 | relocation = 0; | |
16192 | else | |
16193 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 16194 | if (tls_type & TLS_TPREL) |
989f9879 AM |
16195 | relocation += DTP_OFFSET - TP_OFFSET; |
16196 | } | |
5bd4f169 | 16197 | |
f0158f44 | 16198 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
16199 | { |
16200 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16201 | got->contents + off + 8); |
676ee2b5 | 16202 | relocation = 1; |
7b609f53 | 16203 | } |
411e1bfb AM |
16204 | } |
16205 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16206 | got->contents + off); |
5bd4f169 AM |
16207 | } |
16208 | } | |
16209 | ||
65f38f15 AM |
16210 | if (off >= (bfd_vma) -2) |
16211 | abort (); | |
16212 | ||
bf102f86 | 16213 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 16214 | addend = 0; |
c213164a | 16215 | if (!(r_type == R_PPC64_GOT_PCREL34 |
87c69f97 AM |
16216 | || r_type == R_PPC64_GOT_TLSGD_PCREL34 |
16217 | || r_type == R_PPC64_GOT_TLSLD_PCREL34 | |
16218 | || r_type == R_PPC64_GOT_TPREL_PCREL34 | |
16219 | || r_type == R_PPC64_GOT_DTPREL_PCREL34)) | |
5663e321 | 16220 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 16221 | } |
65f38f15 AM |
16222 | break; |
16223 | ||
16224 | case R_PPC64_PLT16_HA: | |
16225 | case R_PPC64_PLT16_HI: | |
16226 | case R_PPC64_PLT16_LO: | |
08be3224 | 16227 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
16228 | case R_PPC64_PLT_PCREL34: |
16229 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
16230 | case R_PPC64_PLT32: |
16231 | case R_PPC64_PLT64: | |
23cedd1d | 16232 | case R_PPC64_PLTSEQ: |
5663e321 | 16233 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 16234 | case R_PPC64_PLTCALL: |
5663e321 | 16235 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
16236 | /* Relocation is to the entry for this symbol in the |
16237 | procedure linkage table. */ | |
23cedd1d | 16238 | unresolved_reloc = TRUE; |
cbf95972 AM |
16239 | { |
16240 | struct plt_entry **plt_list = NULL; | |
16241 | if (h != NULL) | |
16242 | plt_list = &h->elf.plt.plist; | |
16243 | else if (local_got_ents != NULL) | |
16244 | { | |
16245 | struct plt_entry **local_plt = (struct plt_entry **) | |
16246 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 16247 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
16248 | } |
16249 | if (plt_list) | |
16250 | { | |
16251 | struct plt_entry *ent; | |
65f38f15 | 16252 | |
cbf95972 AM |
16253 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
16254 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 16255 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
16256 | { |
16257 | asection *plt; | |
08be3224 | 16258 | bfd_vma got; |
cbf95972 AM |
16259 | |
16260 | plt = htab->elf.splt; | |
16261 | if (!htab->elf.dynamic_sections_created | |
16262 | || h == NULL | |
16263 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
16264 | { |
16265 | if (h != NULL | |
16266 | ? h->elf.type == STT_GNU_IFUNC | |
16267 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16268 | plt = htab->elf.iplt; | |
16269 | else | |
16270 | plt = htab->pltlocal; | |
16271 | } | |
16272 | relocation = (plt->output_section->vma | |
16273 | + plt->output_offset | |
16274 | + ent->plt.offset); | |
08be3224 | 16275 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
16276 | || r_type == R_PPC64_PLT16_HI |
16277 | || r_type == R_PPC64_PLT16_LO | |
16278 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
16279 | { |
16280 | got = (elf_gp (output_bfd) | |
16281 | + htab->sec_info[input_section->id].toc_off); | |
16282 | relocation -= got; | |
16283 | } | |
133a1f60 | 16284 | addend = 0; |
cbf95972 AM |
16285 | unresolved_reloc = FALSE; |
16286 | break; | |
16287 | } | |
16288 | } | |
16289 | } | |
65f38f15 | 16290 | break; |
5bd4f169 | 16291 | |
0b13192e AM |
16292 | case R_PPC64_TOC: |
16293 | /* Relocation value is TOC base. */ | |
16294 | relocation = TOCstart; | |
cf35638d | 16295 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 16296 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
16297 | else if (unresolved_reloc) |
16298 | ; | |
6f20ed8a AM |
16299 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
16300 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
16301 | else |
16302 | unresolved_reloc = TRUE; | |
ab96bf03 | 16303 | goto dodyn; |
0b13192e | 16304 | |
5bd4f169 AM |
16305 | /* TOC16 relocs. We want the offset relative to the TOC base, |
16306 | which is the address of the start of the TOC plus 0x8000. | |
16307 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
16308 | in this order. */ | |
65f38f15 AM |
16309 | case R_PPC64_TOC16: |
16310 | case R_PPC64_TOC16_LO: | |
16311 | case R_PPC64_TOC16_HI: | |
16312 | case R_PPC64_TOC16_DS: | |
16313 | case R_PPC64_TOC16_LO_DS: | |
16314 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 16315 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
16316 | if (h != NULL) |
16317 | goto dodyn; | |
5bd4f169 AM |
16318 | break; |
16319 | ||
16320 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
16321 | case R_PPC64_SECTOFF: |
16322 | case R_PPC64_SECTOFF_LO: | |
16323 | case R_PPC64_SECTOFF_HI: | |
16324 | case R_PPC64_SECTOFF_DS: | |
16325 | case R_PPC64_SECTOFF_LO_DS: | |
16326 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 16327 | if (sec != NULL) |
65f38f15 | 16328 | addend -= sec->output_section->vma; |
5bd4f169 AM |
16329 | break; |
16330 | ||
25f23106 AM |
16331 | case R_PPC64_REL16: |
16332 | case R_PPC64_REL16_LO: | |
16333 | case R_PPC64_REL16_HI: | |
16334 | case R_PPC64_REL16_HA: | |
4a969973 AM |
16335 | case R_PPC64_REL16_HIGH: |
16336 | case R_PPC64_REL16_HIGHA: | |
16337 | case R_PPC64_REL16_HIGHER: | |
16338 | case R_PPC64_REL16_HIGHERA: | |
16339 | case R_PPC64_REL16_HIGHEST: | |
16340 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
16341 | case R_PPC64_REL16_HIGHER34: |
16342 | case R_PPC64_REL16_HIGHERA34: | |
16343 | case R_PPC64_REL16_HIGHEST34: | |
16344 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 16345 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
16346 | case R_PPC64_REL14: |
16347 | case R_PPC64_REL14_BRNTAKEN: | |
16348 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 16349 | case R_PPC64_REL24: |
05d0e962 | 16350 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
16351 | case R_PPC64_PCREL34: |
16352 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
16353 | break; |
16354 | ||
411e1bfb AM |
16355 | case R_PPC64_TPREL16: |
16356 | case R_PPC64_TPREL16_LO: | |
16357 | case R_PPC64_TPREL16_HI: | |
16358 | case R_PPC64_TPREL16_HA: | |
16359 | case R_PPC64_TPREL16_DS: | |
16360 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
16361 | case R_PPC64_TPREL16_HIGH: |
16362 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
16363 | case R_PPC64_TPREL16_HIGHER: |
16364 | case R_PPC64_TPREL16_HIGHERA: | |
16365 | case R_PPC64_TPREL16_HIGHEST: | |
16366 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 16367 | case R_PPC64_TPREL34: |
766bc656 AM |
16368 | if (h != NULL |
16369 | && h->elf.root.type == bfd_link_hash_undefweak | |
16370 | && h->elf.dynindx == -1) | |
16371 | { | |
16372 | /* Make this relocation against an undefined weak symbol | |
16373 | resolve to zero. This is really just a tweak, since | |
16374 | code using weak externs ought to check that they are | |
16375 | defined before using them. */ | |
16376 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
16377 | ||
95f0d0d2 | 16378 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
16379 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
16380 | if (insn != 0) | |
95f0d0d2 | 16381 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
16382 | break; |
16383 | } | |
989f9879 AM |
16384 | if (htab->elf.tls_sec != NULL) |
16385 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
16386 | /* The TPREL16 relocs shouldn't really be used in shared |
16387 | libs or with non-local symbols as that will result in | |
16388 | DT_TEXTREL being set, but support them anyway. */ | |
16389 | goto dodyn; | |
411e1bfb AM |
16390 | |
16391 | case R_PPC64_DTPREL16: | |
16392 | case R_PPC64_DTPREL16_LO: | |
16393 | case R_PPC64_DTPREL16_HI: | |
16394 | case R_PPC64_DTPREL16_HA: | |
16395 | case R_PPC64_DTPREL16_DS: | |
16396 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
16397 | case R_PPC64_DTPREL16_HIGH: |
16398 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
16399 | case R_PPC64_DTPREL16_HIGHER: |
16400 | case R_PPC64_DTPREL16_HIGHERA: | |
16401 | case R_PPC64_DTPREL16_HIGHEST: | |
16402 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 16403 | case R_PPC64_DTPREL34: |
989f9879 AM |
16404 | if (htab->elf.tls_sec != NULL) |
16405 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
16406 | break; |
16407 | ||
45965137 AM |
16408 | case R_PPC64_ADDR64_LOCAL: |
16409 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
16410 | ? h->elf.other | |
16411 | : sym->st_other); | |
16412 | break; | |
16413 | ||
e515b051 AM |
16414 | case R_PPC64_DTPMOD64: |
16415 | relocation = 1; | |
16416 | addend = 0; | |
16417 | goto dodyn; | |
16418 | ||
411e1bfb | 16419 | case R_PPC64_TPREL64: |
989f9879 AM |
16420 | if (htab->elf.tls_sec != NULL) |
16421 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
16422 | goto dodyn; |
16423 | ||
16424 | case R_PPC64_DTPREL64: | |
989f9879 AM |
16425 | if (htab->elf.tls_sec != NULL) |
16426 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 16427 | /* Fall through. */ |
411e1bfb | 16428 | |
65f38f15 AM |
16429 | /* Relocations that may need to be propagated if this is a |
16430 | dynamic object. */ | |
04c9666a | 16431 | case R_PPC64_REL30: |
65f38f15 AM |
16432 | case R_PPC64_REL32: |
16433 | case R_PPC64_REL64: | |
16434 | case R_PPC64_ADDR14: | |
16435 | case R_PPC64_ADDR14_BRNTAKEN: | |
16436 | case R_PPC64_ADDR14_BRTAKEN: | |
16437 | case R_PPC64_ADDR16: | |
16438 | case R_PPC64_ADDR16_DS: | |
16439 | case R_PPC64_ADDR16_HA: | |
16440 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16441 | case R_PPC64_ADDR16_HIGH: |
16442 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16443 | case R_PPC64_ADDR16_HIGHER: |
16444 | case R_PPC64_ADDR16_HIGHERA: | |
16445 | case R_PPC64_ADDR16_HIGHEST: | |
16446 | case R_PPC64_ADDR16_HIGHESTA: | |
16447 | case R_PPC64_ADDR16_LO: | |
16448 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
16449 | case R_PPC64_ADDR16_HIGHER34: |
16450 | case R_PPC64_ADDR16_HIGHERA34: | |
16451 | case R_PPC64_ADDR16_HIGHEST34: | |
16452 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 16453 | case R_PPC64_ADDR24: |
65f38f15 AM |
16454 | case R_PPC64_ADDR32: |
16455 | case R_PPC64_ADDR64: | |
16456 | case R_PPC64_UADDR16: | |
16457 | case R_PPC64_UADDR32: | |
16458 | case R_PPC64_UADDR64: | |
5663e321 AM |
16459 | case R_PPC64_D34: |
16460 | case R_PPC64_D34_LO: | |
16461 | case R_PPC64_D34_HI30: | |
16462 | case R_PPC64_D34_HA30: | |
16463 | case R_PPC64_D28: | |
411e1bfb | 16464 | dodyn: |
5d1634d7 | 16465 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16466 | break; |
16467 | ||
41bd81ab AM |
16468 | if (NO_OPD_RELOCS && is_opd) |
16469 | break; | |
16470 | ||
8a9e8e72 | 16471 | if (bfd_link_pic (info) |
b1b07054 | 16472 | ? ((h == NULL |
190eb1dd | 16473 | || h->elf.dyn_relocs != NULL) |
b1b07054 AM |
16474 | && ((h != NULL && pc_dynrelocs (h)) |
16475 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 | 16476 | : (h != NULL |
190eb1dd | 16477 | ? h->elf.dyn_relocs != NULL |
d311bc8b | 16478 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16479 | { |
b34976b6 | 16480 | bfd_boolean skip, relocate; |
65f38f15 | 16481 | asection *sreloc; |
1cf1f670 | 16482 | bfd_vma out_off; |
82e66161 | 16483 | long indx = 0; |
65f38f15 AM |
16484 | |
16485 | /* When generating a dynamic object, these relocations | |
16486 | are copied into the output file to be resolved at run | |
16487 | time. */ | |
16488 | ||
b34976b6 AM |
16489 | skip = FALSE; |
16490 | relocate = FALSE; | |
65f38f15 | 16491 | |
1cf1f670 AM |
16492 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16493 | input_section, rel->r_offset); | |
16494 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 16495 | skip = TRUE; |
1cf1f670 | 16496 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 16497 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
16498 | out_off += (input_section->output_section->vma |
16499 | + input_section->output_offset); | |
16500 | outrel.r_offset = out_off; | |
411e1bfb | 16501 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16502 | |
1cf1f670 AM |
16503 | /* Optimize unaligned reloc use. */ |
16504 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16505 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16506 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16507 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16508 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16509 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16510 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16511 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16512 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16513 | ||
65f38f15 | 16514 | if (skip) |
0bb2d96a | 16515 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 16516 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
16517 | && !is_opd |
16518 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16519 | { |
82e66161 AM |
16520 | indx = h->elf.dynindx; |
16521 | BFD_ASSERT (indx != -1); | |
16522 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16523 | } |
65f38f15 AM |
16524 | else |
16525 | { | |
41bd81ab AM |
16526 | /* This symbol is local, or marked to become local, |
16527 | or this is an opd section reloc which must point | |
16528 | at a local function. */ | |
65f38f15 | 16529 | outrel.r_addend += relocation; |
e86ce104 | 16530 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16531 | { |
3fad3c7c | 16532 | if (is_opd && h != NULL) |
afbe61cf AM |
16533 | { |
16534 | /* Lie about opd entries. This case occurs | |
16535 | when building shared libraries and we | |
16536 | reference a function in another shared | |
3fad3c7c AM |
16537 | lib. The same thing happens for a weak |
16538 | definition in an application that's | |
16539 | overridden by a strong definition in a | |
16540 | shared lib. (I believe this is a generic | |
16541 | bug in binutils handling of weak syms.) | |
16542 | In these cases we won't use the opd | |
1e2f5b6e | 16543 | entry in this lib. */ |
b34976b6 | 16544 | unresolved_reloc = FALSE; |
afbe61cf | 16545 | } |
25f23106 AM |
16546 | if (!is_opd |
16547 | && r_type == R_PPC64_ADDR64 | |
16548 | && (h != NULL | |
16549 | ? h->elf.type == STT_GNU_IFUNC | |
16550 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16551 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16552 | else | |
16553 | { | |
16554 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16555 | |
25f23106 AM |
16556 | /* We need to relocate .opd contents for ld.so. |
16557 | Prelink also wants simple and consistent rules | |
16558 | for relocs. This make all RELATIVE relocs have | |
16559 | *r_offset equal to r_addend. */ | |
16560 | relocate = TRUE; | |
16561 | } | |
65f38f15 AM |
16562 | } |
16563 | else | |
16564 | { | |
25f23106 AM |
16565 | if (h != NULL |
16566 | ? h->elf.type == STT_GNU_IFUNC | |
16567 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16568 | { | |
25f53a85 | 16569 | info->callbacks->einfo |
695344c0 | 16570 | /* xgettext:c-format */ |
174d0a74 | 16571 | (_("%H: %s for indirect " |
c1c8c1ef | 16572 | "function `%pT' unsupported\n"), |
25f53a85 | 16573 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16574 | ppc64_elf_howto_table[r_type]->name, |
16575 | sym_name); | |
16576 | ret = FALSE; | |
16577 | } | |
cf35638d | 16578 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16579 | ; |
16580 | else if (sec == NULL || sec->owner == NULL) | |
16581 | { | |
16582 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 16583 | return FALSE; |
65f38f15 AM |
16584 | } |
16585 | else | |
16586 | { | |
f26a3287 | 16587 | asection *osec = sec->output_section; |
65f38f15 | 16588 | |
f26a3287 AM |
16589 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
16590 | { | |
16591 | /* TLS symbol values are relative to the | |
16592 | TLS segment. Dynamic relocations for | |
16593 | local TLS symbols therefore can't be | |
16594 | reduced to a relocation against their | |
16595 | section symbol because it holds the | |
16596 | address of the section, not a value | |
16597 | relative to the TLS segment. We could | |
16598 | change the .tdata dynamic section symbol | |
16599 | to be zero value but STN_UNDEF works | |
16600 | and is used elsewhere, eg. for TPREL64 | |
16601 | GOT relocs against local TLS symbols. */ | |
16602 | osec = htab->elf.tls_sec; | |
16603 | indx = 0; | |
16604 | } | |
16605 | else | |
74541ad4 | 16606 | { |
74541ad4 | 16607 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
16608 | if (indx == 0) |
16609 | { | |
16610 | if ((osec->flags & SEC_READONLY) == 0 | |
16611 | && htab->elf.data_index_section != NULL) | |
16612 | osec = htab->elf.data_index_section; | |
16613 | else | |
16614 | osec = htab->elf.text_index_section; | |
16615 | indx = elf_section_data (osec)->dynindx; | |
16616 | } | |
16617 | BFD_ASSERT (indx != 0); | |
74541ad4 | 16618 | } |
74541ad4 | 16619 | |
65f38f15 AM |
16620 | /* We are turning this relocation into one |
16621 | against a section symbol, so subtract out | |
16622 | the output section's address but not the | |
16623 | offset of the input section in the output | |
16624 | section. */ | |
16625 | outrel.r_addend -= osec->vma; | |
16626 | } | |
16627 | ||
16628 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16629 | } | |
16630 | } | |
16631 | ||
16632 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16633 | if (h != NULL |
16634 | ? h->elf.type == STT_GNU_IFUNC | |
16635 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16636 | { |
16637 | sreloc = htab->elf.irelplt; | |
16638 | if (indx == 0) | |
16639 | htab->local_ifunc_resolver = 1; | |
16640 | else if (is_static_defined (&h->elf)) | |
16641 | htab->maybe_local_ifunc_resolver = 1; | |
16642 | } | |
65f38f15 AM |
16643 | if (sreloc == NULL) |
16644 | abort (); | |
16645 | ||
dfbb6ac9 AM |
16646 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16647 | >= sreloc->size) | |
16648 | abort (); | |
947216bf AM |
16649 | loc = sreloc->contents; |
16650 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16651 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16652 | ||
e59a1001 AM |
16653 | if (!warned_dynamic |
16654 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
16655 | { | |
16656 | info->callbacks->einfo | |
16657 | /* xgettext:c-format */ | |
16658 | (_("%X%P: %pB: %s against %pT " | |
16659 | "is not supported by glibc as a dynamic relocation\n"), | |
16660 | input_bfd, | |
16661 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
16662 | sym_name); | |
16663 | warned_dynamic = TRUE; | |
16664 | } | |
16665 | ||
65f38f15 AM |
16666 | /* If this reloc is against an external symbol, it will |
16667 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16668 | anything now. However, for the sake of prelink ensure |
16669 | that the section contents are a known value. */ | |
2cdcc330 | 16670 | if (!relocate) |
81407a69 AM |
16671 | { |
16672 | unresolved_reloc = FALSE; | |
16673 | /* The value chosen here is quite arbitrary as ld.so | |
16674 | ignores section contents except for the special | |
16675 | case of .opd where the contents might be accessed | |
16676 | before relocation. Choose zero, as that won't | |
16677 | cause reloc overflow. */ | |
16678 | relocation = 0; | |
16679 | addend = 0; | |
16680 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16681 | to improve backward compatibility with older | |
16682 | versions of ld. */ | |
16683 | if (r_type == R_PPC64_ADDR64) | |
16684 | addend = outrel.r_addend; | |
16685 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16686 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16687 | addend = outrel.r_offset; |
81407a69 | 16688 | } |
65f38f15 | 16689 | } |
5bd4f169 AM |
16690 | break; |
16691 | ||
65f38f15 AM |
16692 | case R_PPC64_COPY: |
16693 | case R_PPC64_GLOB_DAT: | |
16694 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16695 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16696 | case R_PPC64_RELATIVE: |
16697 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16698 | files. */ | |
ae9a127f | 16699 | /* Fall through. */ |
65f38f15 AM |
16700 | |
16701 | case R_PPC64_PLTGOT16: | |
16702 | case R_PPC64_PLTGOT16_DS: | |
16703 | case R_PPC64_PLTGOT16_HA: | |
16704 | case R_PPC64_PLTGOT16_HI: | |
16705 | case R_PPC64_PLTGOT16_LO: | |
16706 | case R_PPC64_PLTGOT16_LO_DS: | |
16707 | case R_PPC64_PLTREL32: | |
16708 | case R_PPC64_PLTREL64: | |
16709 | /* These ones haven't been implemented yet. */ | |
16710 | ||
25f53a85 | 16711 | info->callbacks->einfo |
695344c0 | 16712 | /* xgettext:c-format */ |
c1c8c1ef | 16713 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16714 | input_bfd, |
4ce794b7 | 16715 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16716 | |
16717 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 16718 | ret = FALSE; |
c316a17c | 16719 | goto copy_reloc; |
65f38f15 | 16720 | } |
5bd4f169 | 16721 | |
67f0cbdb AM |
16722 | /* Multi-instruction sequences that access the TOC can be |
16723 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16724 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16725 | switch (r_type) |
16726 | { | |
16727 | default: | |
16728 | break; | |
16729 | ||
16730 | case R_PPC64_GOT_TLSLD16_HI: | |
16731 | case R_PPC64_GOT_TLSGD16_HI: | |
16732 | case R_PPC64_GOT_TPREL16_HI: | |
16733 | case R_PPC64_GOT_DTPREL16_HI: | |
16734 | case R_PPC64_GOT16_HI: | |
16735 | case R_PPC64_TOC16_HI: | |
16736 | /* These relocs would only be useful if building up an | |
16737 | offset to later add to r2, perhaps in an indexed | |
16738 | addressing mode instruction. Don't try to optimize. | |
16739 | Unfortunately, the possibility of someone building up an | |
16740 | offset like this or even with the HA relocs, means that | |
16741 | we need to check the high insn when optimizing the low | |
16742 | insn. */ | |
16743 | break; | |
16744 | ||
5663e321 AM |
16745 | case R_PPC64_PLTCALL_NOTOC: |
16746 | if (!unresolved_reloc) | |
16747 | htab->notoc_plt = 1; | |
16748 | /* Fall through. */ | |
23cedd1d AM |
16749 | case R_PPC64_PLTCALL: |
16750 | if (unresolved_reloc) | |
16751 | { | |
16752 | /* No plt entry. Make this into a direct call. */ | |
16753 | bfd_byte *p = contents + rel->r_offset; | |
16754 | insn = bfd_get_32 (input_bfd, p); | |
16755 | insn &= 1; | |
16756 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
16757 | if (r_type == R_PPC64_PLTCALL) |
16758 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
16759 | unresolved_reloc = save_unresolved_reloc; |
16760 | r_type = R_PPC64_REL24; | |
16761 | } | |
16762 | break; | |
16763 | ||
5663e321 | 16764 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
16765 | case R_PPC64_PLTSEQ: |
16766 | if (unresolved_reloc) | |
16767 | { | |
16768 | unresolved_reloc = FALSE; | |
16769 | goto nop_it; | |
16770 | } | |
16771 | break; | |
16772 | ||
5663e321 AM |
16773 | case R_PPC64_PLT_PCREL34_NOTOC: |
16774 | if (!unresolved_reloc) | |
16775 | htab->notoc_plt = 1; | |
16776 | /* Fall through. */ | |
16777 | case R_PPC64_PLT_PCREL34: | |
16778 | if (unresolved_reloc) | |
16779 | { | |
16780 | bfd_byte *p = contents + rel->r_offset; | |
16781 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
16782 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
16783 | unresolved_reloc = FALSE; | |
16784 | goto copy_reloc; | |
16785 | } | |
16786 | break; | |
16787 | ||
23cedd1d AM |
16788 | case R_PPC64_PLT16_HA: |
16789 | if (unresolved_reloc) | |
16790 | { | |
16791 | unresolved_reloc = FALSE; | |
16792 | goto nop_it; | |
16793 | } | |
16794 | /* Fall through. */ | |
67f0cbdb AM |
16795 | case R_PPC64_GOT_TLSLD16_HA: |
16796 | case R_PPC64_GOT_TLSGD16_HA: | |
16797 | case R_PPC64_GOT_TPREL16_HA: | |
16798 | case R_PPC64_GOT_DTPREL16_HA: | |
16799 | case R_PPC64_GOT16_HA: | |
16800 | case R_PPC64_TOC16_HA: | |
98528052 | 16801 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16802 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 16803 | { |
23cedd1d AM |
16804 | bfd_byte *p; |
16805 | nop_it: | |
16806 | p = contents + (rel->r_offset & ~3); | |
98528052 | 16807 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 16808 | goto copy_reloc; |
98528052 | 16809 | } |
67f0cbdb AM |
16810 | break; |
16811 | ||
23cedd1d AM |
16812 | case R_PPC64_PLT16_LO: |
16813 | case R_PPC64_PLT16_LO_DS: | |
16814 | if (unresolved_reloc) | |
16815 | { | |
16816 | unresolved_reloc = FALSE; | |
16817 | goto nop_it; | |
16818 | } | |
16819 | /* Fall through. */ | |
67f0cbdb AM |
16820 | case R_PPC64_GOT_TLSLD16_LO: |
16821 | case R_PPC64_GOT_TLSGD16_LO: | |
16822 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16823 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16824 | case R_PPC64_GOT16_LO: | |
16825 | case R_PPC64_GOT16_LO_DS: | |
16826 | case R_PPC64_TOC16_LO: | |
16827 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 16828 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16829 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
16830 | { |
16831 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16832 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16833 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
16834 | { |
16835 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 16836 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
16837 | insn |= (14u << 26) | (2 << 16); |
16838 | } | |
16839 | else | |
67f0cbdb | 16840 | { |
98528052 AM |
16841 | insn &= ~(0x1f << 16); |
16842 | insn |= 2 << 16; | |
67f0cbdb | 16843 | } |
560c8763 | 16844 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
16845 | } |
16846 | break; | |
9a23f96e AM |
16847 | |
16848 | case R_PPC64_TPREL16_HA: | |
16849 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16850 | { | |
16851 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16852 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16853 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) |
9a23f96e AM |
16854 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) |
16855 | /* xgettext:c-format */ | |
16856 | info->callbacks->minfo | |
16857 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
16858 | input_bfd, input_section, rel->r_offset, |
16859 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 16860 | else |
d830549d AM |
16861 | { |
16862 | bfd_put_32 (input_bfd, NOP, p); | |
16863 | goto copy_reloc; | |
16864 | } | |
9a23f96e AM |
16865 | } |
16866 | break; | |
16867 | ||
16868 | case R_PPC64_TPREL16_LO: | |
16869 | case R_PPC64_TPREL16_LO_DS: | |
16870 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16871 | { | |
16872 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16873 | insn = bfd_get_32 (input_bfd, p); | |
16874 | insn &= ~(0x1f << 16); | |
16875 | insn |= 13 << 16; | |
16876 | bfd_put_32 (input_bfd, insn, p); | |
16877 | } | |
16878 | break; | |
67f0cbdb AM |
16879 | } |
16880 | ||
65f38f15 AM |
16881 | /* Do any further special processing. */ |
16882 | switch (r_type) | |
16883 | { | |
16884 | default: | |
16885 | break; | |
16886 | ||
25f23106 | 16887 | case R_PPC64_REL16_HA: |
4a969973 AM |
16888 | case R_PPC64_REL16_HIGHA: |
16889 | case R_PPC64_REL16_HIGHERA: | |
16890 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 16891 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
16892 | case R_PPC64_ADDR16_HA: |
16893 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16894 | case R_PPC64_ADDR16_HIGHERA: |
16895 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
16896 | case R_PPC64_TOC16_HA: |
16897 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 16898 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 16899 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 16900 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 16901 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
16902 | case R_PPC64_DTPREL16_HA: |
16903 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 16904 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 16905 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
16906 | /* It's just possible that this symbol is a weak symbol |
16907 | that's not actually defined anywhere. In that case, | |
16908 | 'sec' would be NULL, and we should leave the symbol | |
16909 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
16910 | if (sec == NULL) |
16911 | break; | |
1a0670f3 | 16912 | /* Fall through. */ |
5c5f6e17 AM |
16913 | |
16914 | case R_PPC64_GOT16_HA: | |
16915 | case R_PPC64_PLTGOT16_HA: | |
16916 | case R_PPC64_PLT16_HA: | |
16917 | case R_PPC64_GOT_TLSGD16_HA: | |
16918 | case R_PPC64_GOT_TLSLD16_HA: | |
16919 | case R_PPC64_GOT_TPREL16_HA: | |
16920 | case R_PPC64_GOT_DTPREL16_HA: | |
16921 | /* Add 0x10000 if sign bit in 0:15 is set. | |
16922 | Bits 0:15 are not used. */ | |
16923 | addend += 0x8000; | |
65f38f15 AM |
16924 | break; |
16925 | ||
5663e321 AM |
16926 | case R_PPC64_D34_HA30: |
16927 | case R_PPC64_ADDR16_HIGHERA34: | |
16928 | case R_PPC64_ADDR16_HIGHESTA34: | |
16929 | case R_PPC64_REL16_HIGHERA34: | |
16930 | case R_PPC64_REL16_HIGHESTA34: | |
16931 | if (sec != NULL) | |
16932 | addend += 1ULL << 33; | |
16933 | break; | |
16934 | ||
65f38f15 AM |
16935 | case R_PPC64_ADDR16_DS: |
16936 | case R_PPC64_ADDR16_LO_DS: | |
16937 | case R_PPC64_GOT16_DS: | |
16938 | case R_PPC64_GOT16_LO_DS: | |
16939 | case R_PPC64_PLT16_LO_DS: | |
16940 | case R_PPC64_SECTOFF_DS: | |
16941 | case R_PPC64_SECTOFF_LO_DS: | |
16942 | case R_PPC64_TOC16_DS: | |
16943 | case R_PPC64_TOC16_LO_DS: | |
16944 | case R_PPC64_PLTGOT16_DS: | |
16945 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
16946 | case R_PPC64_GOT_TPREL16_DS: |
16947 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16948 | case R_PPC64_GOT_DTPREL16_DS: | |
16949 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16950 | case R_PPC64_TPREL16_DS: | |
16951 | case R_PPC64_TPREL16_LO_DS: | |
16952 | case R_PPC64_DTPREL16_DS: | |
16953 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
16954 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
16955 | mask = 3; | |
a680de9a PB |
16956 | /* If this reloc is against an lq, lxv, or stxv insn, then |
16957 | the value must be a multiple of 16. This is somewhat of | |
16958 | a hack, but the "correct" way to do this by defining _DQ | |
16959 | forms of all the _DS relocs bloats all reloc switches in | |
16960 | this file. It doesn't make much sense to use these | |
16961 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
16962 | if ((insn & (0x3fu << 26)) == (56u << 26) |
16963 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 16964 | mask = 15; |
a680de9a PB |
16965 | relocation += addend; |
16966 | addend = insn & (mask ^ 3); | |
16967 | if ((relocation & mask) != 0) | |
65f38f15 | 16968 | { |
a680de9a | 16969 | relocation ^= relocation & mask; |
25f53a85 | 16970 | info->callbacks->einfo |
695344c0 | 16971 | /* xgettext:c-format */ |
174d0a74 | 16972 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 16973 | input_bfd, input_section, rel->r_offset, |
d830549d | 16974 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 16975 | mask + 1); |
65f38f15 | 16976 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16977 | ret = FALSE; |
c316a17c | 16978 | goto copy_reloc; |
65f38f15 AM |
16979 | } |
16980 | break; | |
5bd4f169 AM |
16981 | } |
16982 | ||
239e1f3a AM |
16983 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
16984 | because such sections are not SEC_ALLOC and thus ld.so will | |
16985 | not process them. */ | |
d830549d | 16986 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 16987 | if (unresolved_reloc |
239e1f3a | 16988 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
16989 | && h->elf.def_dynamic) |
16990 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
16991 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 16992 | { |
25f53a85 | 16993 | info->callbacks->einfo |
695344c0 | 16994 | /* xgettext:c-format */ |
c1c8c1ef | 16995 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 16996 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 16997 | howto->name, |
039b3fef | 16998 | h->elf.root.root.string); |
b34976b6 | 16999 | ret = FALSE; |
9c07fe7c | 17000 | } |
5bd4f169 | 17001 | |
b80eed39 AM |
17002 | /* 16-bit fields in insns mostly have signed values, but a |
17003 | few insns have 16-bit unsigned values. Really, we should | |
17004 | have different reloc types. */ | |
17005 | if (howto->complain_on_overflow != complain_overflow_dont | |
17006 | && howto->dst_mask == 0xffff | |
17007 | && (input_section->flags & SEC_CODE) != 0) | |
17008 | { | |
17009 | enum complain_overflow complain = complain_overflow_signed; | |
17010 | ||
17011 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 17012 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
17013 | complain = complain_overflow_bitfield; |
17014 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
17015 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
17016 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
17017 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
17018 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
17019 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
17020 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
17021 | complain = complain_overflow_unsigned; |
17022 | if (howto->complain_on_overflow != complain) | |
17023 | { | |
17024 | alt_howto = *howto; | |
17025 | alt_howto.complain_on_overflow = complain; | |
17026 | howto = &alt_howto; | |
17027 | } | |
17028 | } | |
17029 | ||
5663e321 | 17030 | switch (r_type) |
a680de9a | 17031 | { |
5663e321 AM |
17032 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
17033 | case R_PPC64_D34: | |
17034 | case R_PPC64_D34_LO: | |
17035 | case R_PPC64_D34_HI30: | |
17036 | case R_PPC64_D34_HA30: | |
17037 | case R_PPC64_PCREL34: | |
17038 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
17039 | case R_PPC64_TPREL34: |
17040 | case R_PPC64_DTPREL34: | |
87c69f97 AM |
17041 | case R_PPC64_GOT_TLSGD_PCREL34: |
17042 | case R_PPC64_GOT_TLSLD_PCREL34: | |
17043 | case R_PPC64_GOT_TPREL_PCREL34: | |
17044 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
17045 | case R_PPC64_PLT_PCREL34: |
17046 | case R_PPC64_PLT_PCREL34_NOTOC: | |
17047 | case R_PPC64_D28: | |
17048 | case R_PPC64_PCREL28: | |
17049 | if (rel->r_offset + 8 > input_section->size) | |
17050 | r = bfd_reloc_outofrange; | |
17051 | else | |
17052 | { | |
5663e321 AM |
17053 | relocation += addend; |
17054 | if (howto->pc_relative) | |
17055 | relocation -= (rel->r_offset | |
17056 | + input_section->output_offset | |
17057 | + input_section->output_section->vma); | |
17058 | relocation >>= howto->rightshift; | |
17059 | ||
17060 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
17061 | pinsn <<= 32; | |
17062 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
17063 | ||
17064 | pinsn &= ~howto->dst_mask; | |
17065 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
17066 | & howto->dst_mask); | |
17067 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
17068 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
17069 | r = bfd_reloc_ok; | |
17070 | if (howto->complain_on_overflow == complain_overflow_signed | |
17071 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
17072 | >= 1ULL << howto->bitsize)) | |
17073 | r = bfd_reloc_overflow; | |
17074 | } | |
17075 | break; | |
17076 | ||
17077 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
17078 | if (rel->r_offset + 4 > input_section->size) |
17079 | r = bfd_reloc_outofrange; | |
17080 | else | |
17081 | { | |
17082 | relocation += addend; | |
17083 | relocation -= (rel->r_offset | |
17084 | + input_section->output_offset | |
17085 | + input_section->output_section->vma); | |
3de43e7b | 17086 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
17087 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
17088 | insn &= ~0x1fffc1; | |
3de43e7b | 17089 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
17090 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
17091 | r = bfd_reloc_ok; | |
3de43e7b | 17092 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
17093 | r = bfd_reloc_overflow; |
17094 | } | |
5663e321 AM |
17095 | break; |
17096 | ||
17097 | default: | |
17098 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
17099 | contents, rel->r_offset, | |
17100 | relocation, addend); | |
a680de9a | 17101 | } |
5bd4f169 | 17102 | |
ef60b7ff | 17103 | if (r != bfd_reloc_ok) |
5bd4f169 | 17104 | { |
bc30df16 | 17105 | char *more_info = NULL; |
b80eed39 | 17106 | const char *reloc_name = howto->name; |
bc30df16 AM |
17107 | |
17108 | if (reloc_dest != DEST_NORMAL) | |
17109 | { | |
17110 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
17111 | if (more_info != NULL) | |
17112 | { | |
17113 | strcpy (more_info, reloc_name); | |
17114 | strcat (more_info, (reloc_dest == DEST_OPD | |
17115 | ? " (OPD)" : " (stub)")); | |
17116 | reloc_name = more_info; | |
17117 | } | |
17118 | } | |
17119 | ||
cd27b276 | 17120 | if (r == bfd_reloc_overflow) |
5bd4f169 | 17121 | { |
8131c122 AM |
17122 | /* On code like "if (foo) foo();" don't report overflow |
17123 | on a branch to zero when foo is undefined. */ | |
17124 | if (!warned | |
17125 | && (reloc_dest == DEST_STUB | |
17126 | || !(h != NULL | |
17127 | && (h->elf.root.type == bfd_link_hash_undefweak | |
17128 | || h->elf.root.type == bfd_link_hash_undefined) | |
17129 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
17130 | info->callbacks->reloc_overflow (info, &h->elf.root, |
17131 | sym_name, reloc_name, | |
17132 | orig_rel.r_addend, | |
17133 | input_bfd, input_section, | |
17134 | rel->r_offset); | |
ef60b7ff AM |
17135 | } |
17136 | else | |
17137 | { | |
25f53a85 | 17138 | info->callbacks->einfo |
695344c0 | 17139 | /* xgettext:c-format */ |
c1c8c1ef | 17140 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 17141 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 17142 | reloc_name, sym_name, (int) r); |
b34976b6 | 17143 | ret = FALSE; |
ef60b7ff | 17144 | } |
c9594989 | 17145 | free (more_info); |
5bd4f169 | 17146 | } |
c316a17c AM |
17147 | copy_reloc: |
17148 | if (wrel != rel) | |
17149 | *wrel = *rel; | |
17150 | } | |
17151 | ||
17152 | if (wrel != rel) | |
17153 | { | |
17154 | Elf_Internal_Shdr *rel_hdr; | |
17155 | size_t deleted = rel - wrel; | |
17156 | ||
17157 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
17158 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17159 | if (rel_hdr->sh_size == 0) | |
17160 | { | |
17161 | /* It is too late to remove an empty reloc section. Leave | |
17162 | one NONE reloc. | |
17163 | ??? What is wrong with an empty section??? */ | |
17164 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
17165 | deleted -= 1; | |
17166 | } | |
17167 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
17168 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17169 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
17170 | } |
17171 | ||
645ea6a9 AM |
17172 | /* If we're emitting relocations, then shortly after this function |
17173 | returns, reloc offsets and addends for this section will be | |
17174 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
17175 | file rather than the input. Save a copy of the relocs for |
17176 | opd_entry_value. */ | |
0e1862bb | 17177 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
17178 | { |
17179 | bfd_size_type amt; | |
17180 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
17181 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
17182 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
17183 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
17184 | if (rel == NULL) |
17185 | return FALSE; | |
17186 | memcpy (rel, relocs, amt); | |
17187 | } | |
5bd4f169 AM |
17188 | return ret; |
17189 | } | |
17190 | ||
754021d0 AM |
17191 | /* Adjust the value of any local symbols in opd sections. */ |
17192 | ||
6e0b88f1 | 17193 | static int |
754021d0 AM |
17194 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
17195 | const char *name ATTRIBUTE_UNUSED, | |
17196 | Elf_Internal_Sym *elfsym, | |
17197 | asection *input_sec, | |
17198 | struct elf_link_hash_entry *h) | |
17199 | { | |
74f0fb50 AM |
17200 | struct _opd_sec_data *opd; |
17201 | long adjust; | |
754021d0 AM |
17202 | bfd_vma value; |
17203 | ||
4025353c | 17204 | if (h != NULL) |
6e0b88f1 | 17205 | return 1; |
4025353c | 17206 | |
74f0fb50 AM |
17207 | opd = get_opd_info (input_sec); |
17208 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 17209 | return 1; |
754021d0 AM |
17210 | |
17211 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 17212 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
17213 | value -= input_sec->output_section->vma; |
17214 | ||
51aecdc5 | 17215 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 17216 | if (adjust == -1) |
6e0b88f1 AM |
17217 | return 2; |
17218 | ||
17219 | elfsym->st_value += adjust; | |
17220 | return 1; | |
754021d0 AM |
17221 | } |
17222 | ||
5bd4f169 AM |
17223 | /* Finish up dynamic symbol handling. We set the contents of various |
17224 | dynamic sections here. */ | |
17225 | ||
b34976b6 | 17226 | static bfd_boolean |
4ce794b7 AM |
17227 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
17228 | struct bfd_link_info *info, | |
17229 | struct elf_link_hash_entry *h, | |
4aef7643 | 17230 | Elf_Internal_Sym *sym) |
5bd4f169 | 17231 | { |
65f38f15 | 17232 | struct ppc_link_hash_table *htab; |
8387904d | 17233 | struct plt_entry *ent; |
5bd4f169 | 17234 | |
65f38f15 | 17235 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17236 | if (htab == NULL) |
17237 | return FALSE; | |
5bd4f169 | 17238 | |
49c09209 AM |
17239 | if (!htab->opd_abi && !h->def_regular) |
17240 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
17241 | if (ent->plt.offset != (bfd_vma) -1) | |
17242 | { | |
17243 | /* Mark the symbol as undefined, rather than as | |
17244 | defined in glink. Leave the value if there were | |
17245 | any relocations where pointer equality matters | |
17246 | (this is a clue for the dynamic linker, to make | |
17247 | function pointer comparisons work between an | |
17248 | application and shared library), otherwise set it | |
17249 | to zero. */ | |
17250 | sym->st_shndx = SHN_UNDEF; | |
17251 | if (!h->pointer_equality_needed) | |
17252 | sym->st_value = 0; | |
17253 | else if (!h->ref_regular_nonweak) | |
17254 | { | |
17255 | /* This breaks function pointer comparisons, but | |
17256 | that is better than breaking tests for a NULL | |
17257 | function pointer. */ | |
17258 | sym->st_value = 0; | |
17259 | } | |
17260 | break; | |
17261 | } | |
5bd4f169 | 17262 | |
1bdd8fac AM |
17263 | if (h->needs_copy |
17264 | && (h->root.type == bfd_link_hash_defined | |
17265 | || h->root.type == bfd_link_hash_defweak) | |
17266 | && (h->root.u.def.section == htab->elf.sdynbss | |
17267 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 17268 | { |
65f38f15 | 17269 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 17270 | Elf_Internal_Rela rela; |
5474d94f | 17271 | asection *srel; |
49c09209 | 17272 | bfd_byte *loc; |
5bd4f169 | 17273 | |
1bdd8fac | 17274 | if (h->dynindx == -1) |
65f38f15 | 17275 | abort (); |
5bd4f169 | 17276 | |
ed7007c1 | 17277 | rela.r_offset = defined_sym_val (h); |
5bd4f169 AM |
17278 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); |
17279 | rela.r_addend = 0; | |
afbf7e8e | 17280 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
17281 | srel = htab->elf.sreldynrelro; |
17282 | else | |
17283 | srel = htab->elf.srelbss; | |
17284 | loc = srel->contents; | |
17285 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 17286 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
17287 | } |
17288 | ||
b34976b6 | 17289 | return TRUE; |
5bd4f169 AM |
17290 | } |
17291 | ||
65f38f15 AM |
17292 | /* Used to decide how to sort relocs in an optimal manner for the |
17293 | dynamic linker, before writing them out. */ | |
17294 | ||
17295 | static enum elf_reloc_type_class | |
7e612e98 AM |
17296 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
17297 | const asection *rel_sec, | |
17298 | const Elf_Internal_Rela *rela) | |
65f38f15 | 17299 | { |
04c9666a | 17300 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
17301 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
17302 | ||
33e44f2e | 17303 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 17304 | return reloc_class_ifunc; |
a33d1f77 | 17305 | |
4ce794b7 | 17306 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 17307 | switch (r_type) |
65f38f15 AM |
17308 | { |
17309 | case R_PPC64_RELATIVE: | |
17310 | return reloc_class_relative; | |
17311 | case R_PPC64_JMP_SLOT: | |
17312 | return reloc_class_plt; | |
17313 | case R_PPC64_COPY: | |
17314 | return reloc_class_copy; | |
17315 | default: | |
17316 | return reloc_class_normal; | |
17317 | } | |
17318 | } | |
17319 | ||
5bd4f169 AM |
17320 | /* Finish up the dynamic sections. */ |
17321 | ||
b34976b6 | 17322 | static bfd_boolean |
4ce794b7 AM |
17323 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
17324 | struct bfd_link_info *info) | |
5bd4f169 | 17325 | { |
65f38f15 AM |
17326 | struct ppc_link_hash_table *htab; |
17327 | bfd *dynobj; | |
5bd4f169 | 17328 | asection *sdyn; |
5bd4f169 | 17329 | |
65f38f15 | 17330 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17331 | if (htab == NULL) |
17332 | return FALSE; | |
17333 | ||
65f38f15 | 17334 | dynobj = htab->elf.dynobj; |
3d4d4302 | 17335 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 17336 | |
65f38f15 | 17337 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 17338 | { |
5bd4f169 AM |
17339 | Elf64_External_Dyn *dyncon, *dynconend; |
17340 | ||
33e44f2e | 17341 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 17342 | abort (); |
5bd4f169 AM |
17343 | |
17344 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 17345 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
17346 | for (; dyncon < dynconend; dyncon++) |
17347 | { | |
17348 | Elf_Internal_Dyn dyn; | |
19397422 | 17349 | asection *s; |
5bd4f169 AM |
17350 | |
17351 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
17352 | ||
17353 | switch (dyn.d_tag) | |
17354 | { | |
65f38f15 AM |
17355 | default: |
17356 | continue; | |
5bd4f169 | 17357 | |
5d1634d7 | 17358 | case DT_PPC64_GLINK: |
4ce794b7 | 17359 | s = htab->glink; |
6348e046 | 17360 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
17361 | /* We stupidly defined DT_PPC64_GLINK to be the start |
17362 | of glink rather than the first entry point, which is | |
17363 | what ld.so needs, and now have a bigger stub to | |
17364 | support automatic multiple TOCs. */ | |
9e390558 | 17365 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
17366 | break; |
17367 | ||
19397422 AM |
17368 | case DT_PPC64_OPD: |
17369 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17370 | if (s == NULL) |
17371 | continue; | |
17372 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
17373 | break; |
17374 | ||
e8910a83 | 17375 | case DT_PPC64_OPT: |
5663e321 AM |
17376 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
17377 | || htab->notoc_plt) | |
e8910a83 | 17378 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
17379 | if (htab->has_plt_localentry0) |
17380 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
17381 | break; |
17382 | ||
19397422 AM |
17383 | case DT_PPC64_OPDSZ: |
17384 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17385 | if (s == NULL) |
17386 | continue; | |
eea6121a | 17387 | dyn.d_un.d_val = s->size; |
19397422 AM |
17388 | break; |
17389 | ||
65f38f15 | 17390 | case DT_PLTGOT: |
33e44f2e | 17391 | s = htab->elf.splt; |
6348e046 | 17392 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
17393 | break; |
17394 | ||
17395 | case DT_JMPREL: | |
33e44f2e | 17396 | s = htab->elf.srelplt; |
6348e046 | 17397 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 17398 | break; |
5bd4f169 | 17399 | |
65f38f15 | 17400 | case DT_PLTRELSZ: |
33e44f2e | 17401 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 17402 | break; |
82e66161 AM |
17403 | |
17404 | case DT_TEXTREL: | |
17405 | if (htab->local_ifunc_resolver) | |
17406 | info->callbacks->einfo | |
17407 | (_("%X%P: text relocations and GNU indirect " | |
17408 | "functions will result in a segfault at runtime\n")); | |
17409 | else if (htab->maybe_local_ifunc_resolver) | |
17410 | info->callbacks->einfo | |
17411 | (_("%P: warning: text relocations and GNU indirect " | |
17412 | "functions may result in a segfault at runtime\n")); | |
17413 | continue; | |
5bd4f169 | 17414 | } |
5bd4f169 | 17415 | |
65f38f15 | 17416 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 17417 | } |
5bd4f169 AM |
17418 | } |
17419 | ||
6528b6eb AM |
17420 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
17421 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17422 | { |
17423 | /* Fill in the first entry in the global offset table. | |
17424 | We use it to hold the link-time TOCbase. */ | |
17425 | bfd_put_64 (output_bfd, | |
60ee0d4a | 17426 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 17427 | htab->elf.sgot->contents); |
5d1634d7 AM |
17428 | |
17429 | /* Set .got entry size. */ | |
2cdcc330 AM |
17430 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
17431 | = 8; | |
5d1634d7 AM |
17432 | } |
17433 | ||
6528b6eb AM |
17434 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
17435 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17436 | { |
17437 | /* Set .plt entry size. */ | |
33e44f2e | 17438 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 17439 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
17440 | } |
17441 | ||
84f5d08e AM |
17442 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
17443 | brlt ourselves if emitrelocations. */ | |
17444 | if (htab->brlt != NULL | |
17445 | && htab->brlt->reloc_count != 0 | |
17446 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17447 | htab->brlt, | |
d4730f92 | 17448 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
17449 | elf_section_data (htab->brlt)->relocs, |
17450 | NULL)) | |
17451 | return FALSE; | |
17452 | ||
176a0d42 AM |
17453 | if (htab->glink != NULL |
17454 | && htab->glink->reloc_count != 0 | |
17455 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17456 | htab->glink, | |
d4730f92 | 17457 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
17458 | elf_section_data (htab->glink)->relocs, |
17459 | NULL)) | |
17460 | return FALSE; | |
17461 | ||
da44f4e5 | 17462 | |
df136d64 AM |
17463 | if (htab->glink_eh_frame != NULL |
17464 | && htab->glink_eh_frame->size != 0 | |
17465 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
17466 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
17467 | htab->glink_eh_frame, | |
17468 | htab->glink_eh_frame->contents)) | |
17469 | return FALSE; | |
58d180e8 | 17470 | |
e717da7e | 17471 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
17472 | since we didn't add them to DYNOBJ. We know dynobj is the first |
17473 | bfd. */ | |
c72f2fb2 | 17474 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
17475 | { |
17476 | asection *s; | |
7b53ace3 | 17477 | |
0c8d6e5c | 17478 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
17479 | continue; |
17480 | ||
e717da7e AM |
17481 | s = ppc64_elf_tdata (dynobj)->got; |
17482 | if (s != NULL | |
eea6121a | 17483 | && s->size != 0 |
e717da7e AM |
17484 | && s->output_section != bfd_abs_section_ptr |
17485 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17486 | s->contents, s->output_offset, | |
eea6121a | 17487 | s->size)) |
e717da7e AM |
17488 | return FALSE; |
17489 | s = ppc64_elf_tdata (dynobj)->relgot; | |
17490 | if (s != NULL | |
eea6121a | 17491 | && s->size != 0 |
e717da7e AM |
17492 | && s->output_section != bfd_abs_section_ptr |
17493 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17494 | s->contents, s->output_offset, | |
eea6121a | 17495 | s->size)) |
e717da7e AM |
17496 | return FALSE; |
17497 | } | |
f6c52c13 | 17498 | |
b34976b6 | 17499 | return TRUE; |
5bd4f169 AM |
17500 | } |
17501 | ||
5bd4f169 | 17502 | #include "elf64-target.h" |
7b8e7dad AM |
17503 | |
17504 | /* FreeBSD support */ | |
17505 | ||
17506 | #undef TARGET_LITTLE_SYM | |
17507 | #undef TARGET_LITTLE_NAME | |
17508 | ||
17509 | #undef TARGET_BIG_SYM | |
6d00b590 | 17510 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
17511 | #undef TARGET_BIG_NAME |
17512 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
17513 | ||
17514 | #undef ELF_OSABI | |
17515 | #define ELF_OSABI ELFOSABI_FREEBSD | |
17516 | ||
17517 | #undef elf64_bed | |
17518 | #define elf64_bed elf64_powerpc_fbsd_bed | |
17519 | ||
17520 | #include "elf64-target.h" |