Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
250d07de | 2 | Copyright (C) 1999-2021 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 5 | Largely rewritten by Alan Modra. |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 22 | |
cd123cb7 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 27 | |
4bd7c902 | 28 | /* Don't generate unused section symbols. */ |
0a1b45a2 | 29 | #define TARGET_KEEP_UNUSED_SECTION_SYMBOLS false |
4bd7c902 | 30 | |
3db64b00 | 31 | #include "sysdep.h" |
183e98be | 32 | #include <stdarg.h> |
5bd4f169 | 33 | #include "bfd.h" |
5bd4f169 AM |
34 | #include "bfdlink.h" |
35 | #include "libbfd.h" | |
36 | #include "elf-bfd.h" | |
04c9666a | 37 | #include "elf/ppc64.h" |
5d1634d7 | 38 | #include "elf64-ppc.h" |
58d180e8 | 39 | #include "dwarf2.h" |
5bd4f169 | 40 | |
bb294208 AM |
41 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
42 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 | |
43 | ||
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
46 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 56 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 57 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 58 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 59 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5663e321 AM |
60 | static bfd_reloc_status_type ppc64_elf_prefix_reloc |
61 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 62 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 63 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 64 | static bfd_vma opd_entry_value |
0a1b45a2 | 65 | (asection *, bfd_vma, asection **, bfd_vma *, bool); |
5bd4f169 | 66 | |
6d00b590 | 67 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 68 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 69 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
70 | #define TARGET_BIG_NAME "elf64-powerpc" |
71 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 72 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
73 | #define ELF_MACHINE_CODE EM_PPC64 |
74 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
75 | #define ELF_COMMONPAGESIZE 0x1000 |
76 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
77 | #define elf_info_to_howto ppc64_elf_info_to_howto |
78 | ||
79 | #define elf_backend_want_got_sym 0 | |
80 | #define elf_backend_want_plt_sym 0 | |
81 | #define elf_backend_plt_alignment 3 | |
82 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 83 | #define elf_backend_got_header_size 8 |
5474d94f | 84 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
85 | #define elf_backend_can_gc_sections 1 |
86 | #define elf_backend_can_refcount 1 | |
87 | #define elf_backend_rela_normal 1 | |
64f52338 | 88 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 89 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 90 | |
e717da7e | 91 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 92 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 93 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
94 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
95 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
96 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
97 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 98 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 99 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 100 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
101 | |
102 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
103 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
104 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 105 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 106 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 107 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 108 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 109 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 110 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 111 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 112 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 113 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 114 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 115 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 116 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
117 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
118 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 119 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
c9405344 | 120 | #define elf_backend_always_size_sections ppc64_elf_edit |
ad8e1ba5 | 121 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections |
a345bc8d | 122 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 123 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 124 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
125 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
126 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
127 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
128 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 129 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 130 | #define elf_backend_special_sections ppc64_elf_special_sections |
bf577467 | 131 | #define elf_backend_section_flags ppc64_elf_section_flags |
6911b7dc | 132 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 133 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 134 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 135 | |
5bd4f169 AM |
136 | /* The name of the dynamic interpreter. This is put in the .interp |
137 | section. */ | |
138 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
139 | ||
140 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 141 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 142 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
143 | |
144 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 145 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 146 | |
a078d95a AM |
147 | /* Offsets to some stack save slots. */ |
148 | #define STK_LR 16 | |
149 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 150 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
151 | CR save slot. Used only by optimised __tls_get_addr call stub, |
152 | relying on __tls_get_addr_opt not saving CR.. */ | |
153 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
154 | ||
5bd4f169 | 155 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 156 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
157 | /* TOC base alignment. */ |
158 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
159 | |
160 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
161 | #define TP_OFFSET 0x7000 | |
162 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 163 | |
ad8e1ba5 AM |
164 | /* .plt call stub instructions. The normal stub is like this, but |
165 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 166 | insert an addi to adjust r11. */ |
a078d95a | 167 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
168 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
169 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
170 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
171 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
172 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
173 | #define BCTR 0x4e800420 /* bctr */ |
174 | ||
07d6d2b8 | 175 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
176 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
177 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
178 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
179 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
180 | ||
181 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
182 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
183 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
184 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
185 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
186 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
187 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 188 | |
71a39c98 | 189 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 190 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 191 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 192 | |
07d6d2b8 AM |
193 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
194 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
195 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 196 | |
04bdff6a | 197 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 198 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 199 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 200 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
201 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
202 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 203 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 204 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 205 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 206 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 207 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 208 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 209 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
210 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
211 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
212 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
213 | #define PADDI_R12_PC 0x0610000039800000ULL |
214 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 215 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 216 | |
3cd7c7d7 AM |
217 | /* __glink_PLTresolve stub instructions. We enter with the index in |
218 | R0 for ELFv1, and the address of a glink branch in R12 for ELFv2. */ | |
9e390558 | 219 | #define GLINK_PLTRESOLVE_SIZE(htab) \ |
3cd7c7d7 | 220 | (8u + (htab->opd_abi ? 11 * 4 : htab->has_plt_localentry0 ? 14 * 4 : 13 * 4)) |
ee4bf8d2 AM |
221 | /* 0: */ |
222 | /* .quad plt0-1f */ | |
223 | /* __glink: */ | |
224 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
225 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
226 | /* 1: */ | |
227 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 228 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 229 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
230 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
231 | /* ld %12,0(%11) */ | |
232 | /* ld %2,8(%11) */ | |
233 | /* mtctr %12 */ | |
234 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 235 | /* bctr */ |
3cd7c7d7 AM |
236 | |
237 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ | |
238 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
239 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
240 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
241 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
242 | #define LD_R0_0R11 0xe80b0000 /* ld %r0,0(%r11) */ | |
243 | #define ADD_R11_R0_R11 0x7d605a14 /* add %r11,%r0,%r11 */ | |
5d1634d7 AM |
244 | |
245 | /* Pad with this. */ | |
246 | #define NOP 0x60000000 | |
247 | ||
721956f4 AM |
248 | /* Some other nops. */ |
249 | #define CROR_151515 0x4def7b82 | |
250 | #define CROR_313131 0x4ffffb82 | |
251 | ||
cedb70c5 | 252 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
253 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
254 | #define B_DOT 0x48000000 /* b . */ | |
255 | ||
256 | /* After that, we need two instructions to load the index, followed by | |
257 | a branch. */ | |
258 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 259 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 260 | |
deb0e272 AM |
261 | /* Instructions used by the save and restore reg functions. */ |
262 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
263 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
264 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
265 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
266 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
267 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
268 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
269 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
270 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
271 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
272 | #define BLR 0x4e800020 /* blr */ |
273 | ||
41bd81ab AM |
274 | /* Since .opd is an array of descriptors and each entry will end up |
275 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
276 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 277 | relocate .opd without reloc entries. */ |
41bd81ab AM |
278 | #ifndef NO_OPD_RELOCS |
279 | #define NO_OPD_RELOCS 0 | |
280 | #endif | |
810d4e75 | 281 | |
a4b6fadd AM |
282 | #ifndef ARRAY_SIZE |
283 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
284 | #endif | |
285 | ||
810d4e75 AM |
286 | static inline int |
287 | abiversion (bfd *abfd) | |
288 | { | |
289 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
290 | } | |
291 | ||
292 | static inline void | |
293 | set_abiversion (bfd *abfd, int ver) | |
294 | { | |
295 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
296 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
297 | } | |
5bd4f169 AM |
298 | \f |
299 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
300 | /* Like other ELF RELA targets that don't apply multiple |
301 | field-altering relocations to the same localation, src_mask is | |
302 | always zero and pcrel_offset is the same as pc_relative. | |
303 | PowerPC can always use a zero bitpos, even when the field is not at | |
304 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
305 | and bitpos=2 which matches the ABI description, or as we do here, | |
306 | rightshift=0, bitsize=26 and bitpos=0. */ | |
307 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
308 | complain, special_func) \ | |
309 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
310 | complain_overflow_ ## complain, special_func, \ | |
0a1b45a2 | 311 | #type, false, 0, mask, pc_relative) |
46807bf4 | 312 | |
04c9666a | 313 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 314 | |
f3185997 NC |
315 | static reloc_howto_type ppc64_elf_howto_raw[] = |
316 | { | |
5bd4f169 | 317 | /* This reloc does nothing. */ |
0a1b45a2 | 318 | HOW (R_PPC64_NONE, 3, 0, 0, 0, false, dont, |
46807bf4 | 319 | bfd_elf_generic_reloc), |
5bd4f169 AM |
320 | |
321 | /* A standard 32 bit relocation. */ | |
0a1b45a2 | 322 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, false, bitfield, |
46807bf4 | 323 | bfd_elf_generic_reloc), |
5bd4f169 AM |
324 | |
325 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
326 | FIXME: we don't check that, we just clear them. */ | |
0a1b45a2 | 327 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, false, bitfield, |
46807bf4 | 328 | bfd_elf_generic_reloc), |
5bd4f169 AM |
329 | |
330 | /* A standard 16 bit relocation. */ | |
0a1b45a2 | 331 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, false, bitfield, |
46807bf4 | 332 | bfd_elf_generic_reloc), |
5bd4f169 AM |
333 | |
334 | /* A 16 bit relocation without overflow. */ | |
0a1b45a2 | 335 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 336 | bfd_elf_generic_reloc), |
5bd4f169 AM |
337 | |
338 | /* Bits 16-31 of an address. */ | |
0a1b45a2 | 339 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 340 | bfd_elf_generic_reloc), |
5bd4f169 AM |
341 | |
342 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
343 | bits, treated as a signed number, is negative. */ | |
0a1b45a2 | 344 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 345 | ppc64_elf_ha_reloc), |
5bd4f169 AM |
346 | |
347 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
348 | FIXME: we don't check that, we just clear them. */ | |
0a1b45a2 | 349 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, false, signed, |
46807bf4 | 350 | ppc64_elf_branch_reloc), |
5bd4f169 AM |
351 | |
352 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
353 | indicate that the branch is expected to be taken. The lower two | |
354 | bits must be zero. */ | |
0a1b45a2 | 355 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, false, signed, |
46807bf4 | 356 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
357 | |
358 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
359 | indicate that the branch is not expected to be taken. The lower | |
360 | two bits must be zero. */ | |
0a1b45a2 | 361 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, false, signed, |
46807bf4 | 362 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
363 | |
364 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
0a1b45a2 | 365 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, true, signed, |
46807bf4 | 366 | ppc64_elf_branch_reloc), |
5bd4f169 | 367 | |
05d0e962 | 368 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
0a1b45a2 | 369 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, true, signed, |
46807bf4 | 370 | ppc64_elf_branch_reloc), |
05d0e962 | 371 | |
5bd4f169 | 372 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
0a1b45a2 | 373 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, true, signed, |
46807bf4 | 374 | ppc64_elf_branch_reloc), |
5bd4f169 AM |
375 | |
376 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
377 | the branch is expected to be taken. The lower two bits must be | |
378 | zero. */ | |
0a1b45a2 | 379 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, true, signed, |
46807bf4 | 380 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
381 | |
382 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
383 | the branch is not expected to be taken. The lower two bits must | |
384 | be zero. */ | |
0a1b45a2 | 385 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, true, signed, |
46807bf4 | 386 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
387 | |
388 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
389 | symbol. */ | |
0a1b45a2 | 390 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, false, signed, |
46807bf4 | 391 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
392 | |
393 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
394 | the symbol. */ | |
0a1b45a2 | 395 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 396 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
397 | |
398 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
399 | the symbol. */ | |
0a1b45a2 | 400 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 401 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
402 | |
403 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
404 | the symbol. */ | |
0a1b45a2 | 405 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 406 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
407 | |
408 | /* This is used only by the dynamic linker. The symbol should exist | |
409 | both in the object being run and in some shared library. The | |
410 | dynamic linker copies the data addressed by the symbol from the | |
411 | shared library into the object, because the object being | |
412 | run has to have the data at some particular address. */ | |
0a1b45a2 | 413 | HOW (R_PPC64_COPY, 0, 0, 0, 0, false, dont, |
46807bf4 | 414 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
415 | |
416 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
417 | entries. */ | |
0a1b45a2 | 418 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 419 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
420 | |
421 | /* Created by the link editor. Marks a procedure linkage table | |
422 | entry for a symbol. */ | |
0a1b45a2 | 423 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, false, dont, |
46807bf4 | 424 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
425 | |
426 | /* Used only by the dynamic linker. When the object is run, this | |
427 | doubleword64 is set to the load address of the object, plus the | |
428 | addend. */ | |
0a1b45a2 | 429 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 430 | bfd_elf_generic_reloc), |
5bd4f169 AM |
431 | |
432 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
0a1b45a2 | 433 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, false, bitfield, |
46807bf4 | 434 | bfd_elf_generic_reloc), |
5bd4f169 AM |
435 | |
436 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
0a1b45a2 | 437 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, false, bitfield, |
46807bf4 | 438 | bfd_elf_generic_reloc), |
5bd4f169 AM |
439 | |
440 | /* 32-bit PC relative. */ | |
0a1b45a2 | 441 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, true, signed, |
46807bf4 | 442 | bfd_elf_generic_reloc), |
5bd4f169 | 443 | |
10ed1bba | 444 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
0a1b45a2 | 445 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, false, bitfield, |
46807bf4 | 446 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
447 | |
448 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
449 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
0a1b45a2 | 450 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, true, signed, |
46807bf4 | 451 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
452 | |
453 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
454 | the symbol. */ | |
0a1b45a2 | 455 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 456 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
457 | |
458 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
459 | the symbol. */ | |
0a1b45a2 | 460 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 461 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
462 | |
463 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
464 | the symbol. */ | |
0a1b45a2 | 465 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 466 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 467 | |
c061c2d8 | 468 | /* 16-bit section relative relocation. */ |
0a1b45a2 | 469 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, false, signed, |
46807bf4 | 470 | ppc64_elf_sectoff_reloc), |
5bd4f169 | 471 | |
c061c2d8 | 472 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
0a1b45a2 | 473 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 474 | ppc64_elf_sectoff_reloc), |
5bd4f169 AM |
475 | |
476 | /* 16-bit upper half section relative relocation. */ | |
0a1b45a2 | 477 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 478 | ppc64_elf_sectoff_reloc), |
5bd4f169 AM |
479 | |
480 | /* 16-bit upper half adjusted section relative relocation. */ | |
0a1b45a2 | 481 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 482 | ppc64_elf_sectoff_ha_reloc), |
5bd4f169 | 483 | |
04c9666a | 484 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
0a1b45a2 | 485 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, true, dont, |
46807bf4 | 486 | bfd_elf_generic_reloc), |
5bd4f169 AM |
487 | |
488 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
489 | ||
490 | /* A standard 64-bit relocation. */ | |
0a1b45a2 | 491 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 492 | bfd_elf_generic_reloc), |
5bd4f169 AM |
493 | |
494 | /* The bits 32-47 of an address. */ | |
0a1b45a2 | 495 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, false, dont, |
46807bf4 | 496 | bfd_elf_generic_reloc), |
5bd4f169 AM |
497 | |
498 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
499 | 16 bits, treated as a signed number, is negative. */ | |
0a1b45a2 | 500 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, false, dont, |
46807bf4 | 501 | ppc64_elf_ha_reloc), |
5bd4f169 AM |
502 | |
503 | /* The bits 48-63 of an address. */ | |
0a1b45a2 | 504 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, false, dont, |
46807bf4 | 505 | bfd_elf_generic_reloc), |
5bd4f169 AM |
506 | |
507 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
508 | 16 bits, treated as a signed number, is negative. */ | |
0a1b45a2 | 509 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, false, dont, |
46807bf4 | 510 | ppc64_elf_ha_reloc), |
5bd4f169 AM |
511 | |
512 | /* Like ADDR64, but may be unaligned. */ | |
0a1b45a2 | 513 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 514 | bfd_elf_generic_reloc), |
5bd4f169 AM |
515 | |
516 | /* 64-bit relative relocation. */ | |
0a1b45a2 | 517 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, true, dont, |
46807bf4 | 518 | bfd_elf_generic_reloc), |
5bd4f169 | 519 | |
cedb70c5 | 520 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
0a1b45a2 | 521 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 522 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
523 | |
524 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
525 | table. */ | |
526 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
0a1b45a2 | 527 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, true, dont, |
46807bf4 | 528 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
529 | |
530 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 531 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
0a1b45a2 | 532 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, false, signed, |
46807bf4 | 533 | ppc64_elf_toc_reloc), |
5bd4f169 AM |
534 | |
535 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 536 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
0a1b45a2 | 537 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 538 | ppc64_elf_toc_reloc), |
5bd4f169 AM |
539 | |
540 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 541 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
0a1b45a2 | 542 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 543 | ppc64_elf_toc_reloc), |
5bd4f169 AM |
544 | |
545 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
546 | contents of the low 16 bits, treated as a signed number, is | |
547 | negative. */ | |
5bd4f169 | 548 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
0a1b45a2 | 549 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 550 | ppc64_elf_toc_ha_reloc), |
5bd4f169 AM |
551 | |
552 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 553 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
0a1b45a2 | 554 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 555 | ppc64_elf_toc64_reloc), |
5bd4f169 AM |
556 | |
557 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
558 | value to relocate may (!) refer to a PLT entry which the link | |
559 | editor (a) may replace with the symbol value. If the link editor | |
560 | is unable to fully resolve the symbol, it may (b) create a PLT | |
561 | entry and store the address to the new PLT entry in the GOT. | |
562 | This permits lazy resolution of function symbols at run time. | |
563 | The link editor may also skip all of this and just (c) emit a | |
564 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
565 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
0a1b45a2 | 566 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, false,signed, |
46807bf4 | 567 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
568 | |
569 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
570 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
0a1b45a2 | 571 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 572 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
573 | |
574 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
575 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
0a1b45a2 | 576 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 577 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
578 | |
579 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
580 | 1 if the contents of the low 16 bits, treated as a signed number, | |
581 | is negative. */ | |
582 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
0a1b45a2 | 583 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 584 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
585 | |
586 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
0a1b45a2 | 587 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 588 | bfd_elf_generic_reloc), |
411e1bfb AM |
589 | |
590 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
0a1b45a2 | 591 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 592 | bfd_elf_generic_reloc), |
411e1bfb AM |
593 | |
594 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
0a1b45a2 | 595 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 596 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
597 | |
598 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
0a1b45a2 | 599 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 600 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
601 | |
602 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
0a1b45a2 | 603 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 604 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
605 | |
606 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
0a1b45a2 | 607 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 608 | ppc64_elf_sectoff_reloc), |
411e1bfb AM |
609 | |
610 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
0a1b45a2 | 611 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 612 | ppc64_elf_sectoff_reloc), |
411e1bfb AM |
613 | |
614 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
0a1b45a2 | 615 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 616 | ppc64_elf_toc_reloc), |
411e1bfb AM |
617 | |
618 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
0a1b45a2 | 619 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 620 | ppc64_elf_toc_reloc), |
411e1bfb AM |
621 | |
622 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
623 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
0a1b45a2 | 624 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 625 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
626 | |
627 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
628 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
0a1b45a2 | 629 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 630 | ppc64_elf_unhandled_reloc), |
411e1bfb | 631 | |
727fc41e | 632 | /* Marker relocs for TLS. */ |
0a1b45a2 | 633 | HOW (R_PPC64_TLS, 2, 32, 0, 0, false, dont, |
46807bf4 AM |
634 | bfd_elf_generic_reloc), |
635 | ||
0a1b45a2 | 636 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, false, dont, |
46807bf4 AM |
637 | bfd_elf_generic_reloc), |
638 | ||
0a1b45a2 | 639 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, false, dont, |
46807bf4 | 640 | bfd_elf_generic_reloc), |
727fc41e | 641 | |
23cedd1d AM |
642 | /* Marker reloc for optimizing r2 save in prologue rather than on |
643 | each plt call stub. */ | |
0a1b45a2 | 644 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, false, dont, |
46807bf4 | 645 | bfd_elf_generic_reloc), |
3b421ab3 | 646 | |
23cedd1d | 647 | /* Marker relocs on inline plt call instructions. */ |
0a1b45a2 | 648 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, false, dont, |
46807bf4 AM |
649 | bfd_elf_generic_reloc), |
650 | ||
0a1b45a2 | 651 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, false, dont, |
46807bf4 | 652 | bfd_elf_generic_reloc), |
23cedd1d | 653 | |
411e1bfb AM |
654 | /* Computes the load module index of the load module that contains the |
655 | definition of its TLS sym. */ | |
0a1b45a2 | 656 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 657 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
658 | |
659 | /* Computes a dtv-relative displacement, the difference between the value | |
660 | of sym+add and the base address of the thread-local storage block that | |
661 | contains the definition of sym, minus 0x8000. */ | |
0a1b45a2 | 662 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 663 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
664 | |
665 | /* A 16 bit dtprel reloc. */ | |
0a1b45a2 | 666 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, false, signed, |
46807bf4 | 667 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
668 | |
669 | /* Like DTPREL16, but no overflow. */ | |
0a1b45a2 | 670 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 671 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
672 | |
673 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
0a1b45a2 | 674 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 675 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
676 | |
677 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
0a1b45a2 | 678 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 679 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
680 | |
681 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
0a1b45a2 | 682 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, false, dont, |
46807bf4 | 683 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
684 | |
685 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
0a1b45a2 | 686 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, false, dont, |
46807bf4 | 687 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
688 | |
689 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
0a1b45a2 | 690 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, false, dont, |
46807bf4 | 691 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
692 | |
693 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
0a1b45a2 | 694 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, false, dont, |
46807bf4 | 695 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
696 | |
697 | /* Like DTPREL16, but for insns with a DS field. */ | |
0a1b45a2 | 698 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 699 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
700 | |
701 | /* Like DTPREL16_DS, but no overflow. */ | |
0a1b45a2 | 702 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 703 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
704 | |
705 | /* Computes a tp-relative displacement, the difference between the value of | |
706 | sym+add and the value of the thread pointer (r13). */ | |
0a1b45a2 | 707 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 708 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
709 | |
710 | /* A 16 bit tprel reloc. */ | |
0a1b45a2 | 711 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, false, signed, |
46807bf4 | 712 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
713 | |
714 | /* Like TPREL16, but no overflow. */ | |
0a1b45a2 | 715 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 716 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
717 | |
718 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
0a1b45a2 | 719 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 720 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
721 | |
722 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
0a1b45a2 | 723 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 724 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
725 | |
726 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
0a1b45a2 | 727 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, false, dont, |
46807bf4 | 728 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
729 | |
730 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
0a1b45a2 | 731 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, false, dont, |
46807bf4 | 732 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
733 | |
734 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
0a1b45a2 | 735 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, false, dont, |
46807bf4 | 736 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
737 | |
738 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
0a1b45a2 | 739 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, false, dont, |
46807bf4 | 740 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
741 | |
742 | /* Like TPREL16, but for insns with a DS field. */ | |
0a1b45a2 | 743 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 744 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
745 | |
746 | /* Like TPREL16_DS, but no overflow. */ | |
0a1b45a2 | 747 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 748 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
749 | |
750 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
751 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
752 | to the first entry relative to the TOC base (r2). */ | |
0a1b45a2 | 753 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, false, signed, |
46807bf4 | 754 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 755 | |
411e1bfb | 756 | /* Like GOT_TLSGD16, but no overflow. */ |
0a1b45a2 | 757 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 758 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 759 | |
411e1bfb | 760 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
0a1b45a2 | 761 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 762 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 763 | |
411e1bfb | 764 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
0a1b45a2 | 765 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 766 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 767 | |
411e1bfb AM |
768 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
769 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
770 | first entry relative to the TOC base (r2). */ | |
0a1b45a2 | 771 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, false, signed, |
46807bf4 | 772 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 773 | |
411e1bfb | 774 | /* Like GOT_TLSLD16, but no overflow. */ |
0a1b45a2 | 775 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, false, dont, |
46807bf4 | 776 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 777 | |
411e1bfb | 778 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
0a1b45a2 | 779 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 780 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 781 | |
411e1bfb | 782 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
0a1b45a2 | 783 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 784 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 785 | |
411e1bfb AM |
786 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
787 | the offset to the entry relative to the TOC base (r2). */ | |
0a1b45a2 | 788 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 789 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 790 | |
411e1bfb | 791 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
0a1b45a2 | 792 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 793 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 794 | |
411e1bfb | 795 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
0a1b45a2 | 796 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 797 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 798 | |
411e1bfb | 799 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
0a1b45a2 | 800 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 801 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
802 | |
803 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
804 | offset to the entry relative to the TOC base (r2). */ | |
0a1b45a2 | 805 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, false, signed, |
46807bf4 | 806 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 807 | |
411e1bfb | 808 | /* Like GOT_TPREL16_DS, but no overflow. */ |
0a1b45a2 | 809 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, false, dont, |
46807bf4 | 810 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 811 | |
411e1bfb | 812 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
0a1b45a2 | 813 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, false, signed, |
46807bf4 | 814 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 815 | |
411e1bfb | 816 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
0a1b45a2 | 817 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, false, signed, |
46807bf4 AM |
818 | ppc64_elf_unhandled_reloc), |
819 | ||
0a1b45a2 | 820 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, false, dont, |
46807bf4 AM |
821 | ppc64_elf_unhandled_reloc), |
822 | ||
0a1b45a2 | 823 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 824 | bfd_elf_generic_reloc), |
e054468f | 825 | |
25f23106 | 826 | /* A 16 bit relative relocation. */ |
0a1b45a2 | 827 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, true, signed, |
46807bf4 | 828 | bfd_elf_generic_reloc), |
25f23106 AM |
829 | |
830 | /* A 16 bit relative relocation without overflow. */ | |
0a1b45a2 | 831 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, true, dont, |
46807bf4 | 832 | bfd_elf_generic_reloc), |
25f23106 AM |
833 | |
834 | /* The high order 16 bits of a relative address. */ | |
0a1b45a2 | 835 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, true, signed, |
46807bf4 | 836 | bfd_elf_generic_reloc), |
25f23106 AM |
837 | |
838 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
839 | the low 16 bits, treated as a signed number, is negative. */ | |
0a1b45a2 | 840 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, true, signed, |
46807bf4 | 841 | ppc64_elf_ha_reloc), |
25f23106 | 842 | |
0a1b45a2 | 843 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, true, dont, |
4a969973 AM |
844 | bfd_elf_generic_reloc), |
845 | ||
0a1b45a2 | 846 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, true, dont, |
4a969973 AM |
847 | ppc64_elf_ha_reloc), |
848 | ||
0a1b45a2 | 849 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, true, dont, |
4a969973 AM |
850 | bfd_elf_generic_reloc), |
851 | ||
0a1b45a2 | 852 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, true, dont, |
4a969973 AM |
853 | ppc64_elf_ha_reloc), |
854 | ||
0a1b45a2 | 855 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, true, dont, |
4a969973 AM |
856 | bfd_elf_generic_reloc), |
857 | ||
0a1b45a2 | 858 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, true, dont, |
4a969973 AM |
859 | ppc64_elf_ha_reloc), |
860 | ||
a680de9a | 861 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
0a1b45a2 | 862 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, true, signed, |
46807bf4 | 863 | ppc64_elf_ha_reloc), |
a680de9a | 864 | |
7ba71655 | 865 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
0a1b45a2 | 866 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, false, signed, |
46807bf4 | 867 | ppc64_elf_ha_reloc), |
7ba71655 | 868 | |
f9c6b907 | 869 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
0a1b45a2 | 870 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, false, dont, |
46807bf4 | 871 | bfd_elf_generic_reloc), |
f9c6b907 AM |
872 | |
873 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
0a1b45a2 | 874 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, false, dont, |
46807bf4 | 875 | ppc64_elf_ha_reloc), |
f9c6b907 AM |
876 | |
877 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
0a1b45a2 | 878 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, false, dont, |
46807bf4 | 879 | ppc64_elf_unhandled_reloc), |
f9c6b907 AM |
880 | |
881 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
0a1b45a2 | 882 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, false, dont, |
46807bf4 | 883 | ppc64_elf_unhandled_reloc), |
f9c6b907 AM |
884 | |
885 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
0a1b45a2 | 886 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, false, dont, |
46807bf4 | 887 | ppc64_elf_unhandled_reloc), |
f9c6b907 AM |
888 | |
889 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
0a1b45a2 | 890 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, false, dont, |
46807bf4 | 891 | ppc64_elf_unhandled_reloc), |
f9c6b907 | 892 | |
006589cf | 893 | /* Marker reloc on ELFv2 large-model function entry. */ |
0a1b45a2 | 894 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, false, dont, |
46807bf4 | 895 | bfd_elf_generic_reloc), |
006589cf | 896 | |
45965137 | 897 | /* Like ADDR64, but use local entry point of function. */ |
0a1b45a2 | 898 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 899 | bfd_elf_generic_reloc), |
45965137 | 900 | |
0a1b45a2 | 901 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, false, dont, |
5663e321 AM |
902 | bfd_elf_generic_reloc), |
903 | ||
0a1b45a2 | 904 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, false, dont, |
5663e321 AM |
905 | bfd_elf_generic_reloc), |
906 | ||
0a1b45a2 | 907 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, false, dont, |
5663e321 AM |
908 | bfd_elf_generic_reloc), |
909 | ||
0a1b45a2 | 910 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, false, signed, |
5663e321 AM |
911 | ppc64_elf_prefix_reloc), |
912 | ||
0a1b45a2 | 913 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, false, dont, |
5663e321 AM |
914 | ppc64_elf_prefix_reloc), |
915 | ||
0a1b45a2 | 916 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, false, dont, |
5663e321 AM |
917 | ppc64_elf_prefix_reloc), |
918 | ||
0a1b45a2 | 919 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, false, dont, |
5663e321 AM |
920 | ppc64_elf_prefix_reloc), |
921 | ||
0a1b45a2 | 922 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
923 | ppc64_elf_prefix_reloc), |
924 | ||
0a1b45a2 | 925 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
926 | ppc64_elf_unhandled_reloc), |
927 | ||
0a1b45a2 | 928 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
929 | ppc64_elf_unhandled_reloc), |
930 | ||
0a1b45a2 | 931 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
932 | ppc64_elf_unhandled_reloc), |
933 | ||
0a1b45a2 | 934 | HOW (R_PPC64_TPREL34, 4, 34, 0x3ffff0000ffffULL, 0, false, signed, |
c213164a AM |
935 | ppc64_elf_unhandled_reloc), |
936 | ||
0a1b45a2 | 937 | HOW (R_PPC64_DTPREL34, 4, 34, 0x3ffff0000ffffULL, 0, false, signed, |
c213164a AM |
938 | ppc64_elf_unhandled_reloc), |
939 | ||
0a1b45a2 | 940 | HOW (R_PPC64_GOT_TLSGD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
941 | ppc64_elf_unhandled_reloc), |
942 | ||
0a1b45a2 | 943 | HOW (R_PPC64_GOT_TLSLD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
944 | ppc64_elf_unhandled_reloc), |
945 | ||
0a1b45a2 | 946 | HOW (R_PPC64_GOT_TPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
947 | ppc64_elf_unhandled_reloc), |
948 | ||
0a1b45a2 | 949 | HOW (R_PPC64_GOT_DTPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
950 | ppc64_elf_unhandled_reloc), |
951 | ||
0a1b45a2 | 952 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, false, dont, |
5663e321 AM |
953 | bfd_elf_generic_reloc), |
954 | ||
0a1b45a2 | 955 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, false, dont, |
5663e321 AM |
956 | ppc64_elf_ha_reloc), |
957 | ||
0a1b45a2 | 958 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, false, dont, |
5663e321 AM |
959 | bfd_elf_generic_reloc), |
960 | ||
0a1b45a2 | 961 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, false, dont, |
5663e321 AM |
962 | ppc64_elf_ha_reloc), |
963 | ||
0a1b45a2 | 964 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, true, dont, |
5663e321 AM |
965 | bfd_elf_generic_reloc), |
966 | ||
0a1b45a2 | 967 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, true, dont, |
5663e321 AM |
968 | ppc64_elf_ha_reloc), |
969 | ||
0a1b45a2 | 970 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, true, dont, |
5663e321 AM |
971 | bfd_elf_generic_reloc), |
972 | ||
0a1b45a2 | 973 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, true, dont, |
5663e321 AM |
974 | ppc64_elf_ha_reloc), |
975 | ||
0a1b45a2 | 976 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, false, signed, |
5663e321 AM |
977 | ppc64_elf_prefix_reloc), |
978 | ||
0a1b45a2 | 979 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, true, signed, |
5663e321 AM |
980 | ppc64_elf_prefix_reloc), |
981 | ||
5bd4f169 | 982 | /* GNU extension to record C++ vtable hierarchy. */ |
0a1b45a2 | 983 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, false, dont, |
46807bf4 | 984 | NULL), |
5bd4f169 AM |
985 | |
986 | /* GNU extension to record C++ vtable member usage. */ | |
0a1b45a2 | 987 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, false, dont, |
46807bf4 | 988 | NULL), |
5bd4f169 AM |
989 | }; |
990 | ||
991 | \f | |
992 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
993 | be done. */ | |
994 | ||
995 | static void | |
4ce794b7 | 996 | ppc_howto_init (void) |
5bd4f169 AM |
997 | { |
998 | unsigned int i, type; | |
999 | ||
a4b6fadd | 1000 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
1001 | { |
1002 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 1003 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
1004 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
1005 | } | |
1006 | } | |
1007 | ||
1008 | static reloc_howto_type * | |
87c69f97 | 1009 | ppc64_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
5bd4f169 | 1010 | { |
411e1bfb | 1011 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1012 | |
1013 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1014 | /* Initialize howto table if needed. */ | |
1015 | ppc_howto_init (); | |
1016 | ||
4ce794b7 | 1017 | switch (code) |
5bd4f169 AM |
1018 | { |
1019 | default: | |
f3185997 | 1020 | /* xgettext:c-format */ |
2cdcc330 AM |
1021 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
1022 | (int) code); | |
f3185997 | 1023 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 1024 | return NULL; |
5bd4f169 | 1025 | |
411e1bfb AM |
1026 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1027 | break; | |
1028 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1029 | break; | |
1030 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1031 | break; | |
1032 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1033 | break; | |
1034 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1035 | break; | |
1036 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1037 | break; | |
f9c6b907 AM |
1038 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1039 | break; | |
411e1bfb | 1040 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1041 | break; |
f9c6b907 AM |
1042 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1043 | break; | |
411e1bfb | 1044 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1045 | break; |
411e1bfb | 1046 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1047 | break; |
411e1bfb | 1048 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1049 | break; |
411e1bfb | 1050 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1051 | break; |
05d0e962 AM |
1052 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1053 | break; | |
411e1bfb | 1054 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1055 | break; |
411e1bfb | 1056 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1057 | break; |
411e1bfb | 1058 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1059 | break; |
411e1bfb | 1060 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1061 | break; |
411e1bfb | 1062 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1063 | break; |
411e1bfb | 1064 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1065 | break; |
411e1bfb | 1066 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1067 | break; |
411e1bfb | 1068 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1069 | break; |
411e1bfb | 1070 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1071 | break; |
411e1bfb | 1072 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1073 | break; |
411e1bfb | 1074 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1075 | break; |
411e1bfb | 1076 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1077 | break; |
411e1bfb | 1078 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1079 | break; |
411e1bfb | 1080 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1081 | break; |
411e1bfb | 1082 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1083 | break; |
411e1bfb | 1084 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1085 | break; |
411e1bfb | 1086 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1087 | break; |
411e1bfb | 1088 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1089 | break; |
411e1bfb | 1090 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1091 | break; |
411e1bfb | 1092 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1093 | break; |
411e1bfb | 1094 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1095 | break; |
411e1bfb | 1096 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1097 | break; |
411e1bfb | 1098 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1099 | break; |
411e1bfb | 1100 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1101 | break; |
411e1bfb | 1102 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1103 | break; |
411e1bfb | 1104 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1105 | break; |
411e1bfb | 1106 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1107 | break; |
411e1bfb | 1108 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1109 | break; |
411e1bfb | 1110 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1111 | break; |
411e1bfb | 1112 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1113 | break; |
411e1bfb | 1114 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1115 | break; |
411e1bfb | 1116 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1117 | break; |
411e1bfb | 1118 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1119 | break; |
411e1bfb | 1120 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1121 | break; |
411e1bfb | 1122 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1123 | break; |
411e1bfb | 1124 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1125 | break; |
411e1bfb | 1126 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1127 | break; |
411e1bfb | 1128 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1129 | break; |
411e1bfb | 1130 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1131 | break; |
411e1bfb | 1132 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1133 | break; |
411e1bfb | 1134 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1135 | break; |
411e1bfb | 1136 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1137 | break; |
411e1bfb | 1138 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1139 | break; |
411e1bfb | 1140 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1141 | break; |
411e1bfb | 1142 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1143 | break; |
411e1bfb | 1144 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1145 | break; |
411e1bfb | 1146 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1147 | break; |
411e1bfb | 1148 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1149 | break; |
c213164a | 1150 | case BFD_RELOC_PPC64_TLS_PCREL: |
411e1bfb | 1151 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1152 | break; |
727fc41e AM |
1153 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1154 | break; | |
1155 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1156 | break; | |
411e1bfb | 1157 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1158 | break; |
411e1bfb | 1159 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1160 | break; |
411e1bfb | 1161 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1162 | break; |
411e1bfb | 1163 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1164 | break; |
f9c6b907 AM |
1165 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1166 | break; | |
411e1bfb | 1167 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1168 | break; |
f9c6b907 AM |
1169 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1170 | break; | |
411e1bfb | 1171 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1172 | break; |
411e1bfb AM |
1173 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1174 | break; | |
1175 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1176 | break; | |
1177 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1178 | break; | |
f9c6b907 AM |
1179 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1180 | break; | |
411e1bfb AM |
1181 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1182 | break; | |
f9c6b907 AM |
1183 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1184 | break; | |
411e1bfb AM |
1185 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1186 | break; | |
1187 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1188 | break; | |
1189 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1190 | break; | |
1191 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1192 | break; | |
1193 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1194 | break; | |
1195 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1196 | break; | |
1197 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1198 | break; | |
1199 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1200 | break; | |
1201 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1202 | break; | |
1203 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1204 | break; | |
1205 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1206 | break; | |
1207 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1208 | break; | |
1209 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1210 | break; | |
1211 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1212 | break; | |
1213 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1214 | break; | |
1215 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1216 | break; | |
1217 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1218 | break; | |
1219 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1220 | break; | |
1221 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1222 | break; | |
1223 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1224 | break; | |
1225 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1226 | break; | |
1227 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1228 | break; | |
1229 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1230 | break; | |
1231 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1232 | break; | |
1233 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1234 | break; | |
1235 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1236 | break; | |
1237 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1238 | break; | |
1239 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1240 | break; | |
1241 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1242 | break; | |
25f23106 AM |
1243 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1244 | break; | |
1245 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1246 | break; | |
1247 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1248 | break; | |
1249 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1250 | break; | |
4a969973 AM |
1251 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1252 | break; | |
1253 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1254 | break; | |
1255 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1256 | break; | |
1257 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1258 | break; | |
1259 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1260 | break; | |
1261 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1262 | break; | |
7ba71655 AM |
1263 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1264 | break; | |
a680de9a PB |
1265 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1266 | break; | |
006589cf AM |
1267 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1268 | break; | |
45965137 AM |
1269 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1270 | break; | |
5663e321 AM |
1271 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1272 | break; | |
1273 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1274 | break; | |
1275 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1276 | break; | |
1277 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1278 | break; | |
1279 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1280 | break; | |
1281 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1282 | break; | |
1283 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1284 | break; | |
c213164a AM |
1285 | case BFD_RELOC_PPC64_TPREL34: r = R_PPC64_TPREL34; |
1286 | break; | |
1287 | case BFD_RELOC_PPC64_DTPREL34: r = R_PPC64_DTPREL34; | |
1288 | break; | |
87c69f97 | 1289 | case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34: r = R_PPC64_GOT_TLSGD_PCREL34; |
c213164a | 1290 | break; |
87c69f97 | 1291 | case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34: r = R_PPC64_GOT_TLSLD_PCREL34; |
c213164a | 1292 | break; |
87c69f97 | 1293 | case BFD_RELOC_PPC64_GOT_TPREL_PCREL34: r = R_PPC64_GOT_TPREL_PCREL34; |
c213164a | 1294 | break; |
87c69f97 | 1295 | case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34: r = R_PPC64_GOT_DTPREL_PCREL34; |
c213164a | 1296 | break; |
5663e321 AM |
1297 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; |
1298 | break; | |
1299 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1300 | break; | |
1301 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1302 | break; | |
1303 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1304 | break; | |
1305 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1306 | break; | |
1307 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1308 | break; | |
1309 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1310 | break; | |
1311 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1312 | break; | |
1313 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1314 | break; | |
1315 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1316 | break; | |
411e1bfb AM |
1317 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1318 | break; | |
1319 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1320 | break; |
1321 | } | |
1322 | ||
4ce794b7 | 1323 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1324 | }; |
1325 | ||
157090f7 | 1326 | static reloc_howto_type * |
87c69f97 | 1327 | ppc64_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
157090f7 AM |
1328 | { |
1329 | unsigned int i; | |
87c69f97 AM |
1330 | static char *compat_map[][2] = { |
1331 | { "R_PPC64_GOT_TLSGD34", "R_PPC64_GOT_TLSGD_PCREL34" }, | |
1332 | { "R_PPC64_GOT_TLSLD34", "R_PPC64_GOT_TLSLD_PCREL34" }, | |
1333 | { "R_PPC64_GOT_TPREL34", "R_PPC64_GOT_TPREL_PCREL34" }, | |
1334 | { "R_PPC64_GOT_DTPREL34", "R_PPC64_GOT_DTPREL_PCREL34" } | |
1335 | }; | |
157090f7 | 1336 | |
a4b6fadd | 1337 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1338 | if (ppc64_elf_howto_raw[i].name != NULL |
1339 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1340 | return &ppc64_elf_howto_raw[i]; | |
1341 | ||
87c69f97 AM |
1342 | /* Handle old names of relocations in case they were used by |
1343 | .reloc directives. | |
1344 | FIXME: Remove this soon. Mapping the reloc names is very likely | |
1345 | completely unnecessary. */ | |
1346 | for (i = 0; i < ARRAY_SIZE (compat_map); i++) | |
1347 | if (strcasecmp (compat_map[i][0], r_name) == 0) | |
1348 | { | |
1349 | _bfd_error_handler (_("warning: %s should be used rather than %s"), | |
1350 | compat_map[i][1], compat_map[i][0]); | |
1351 | return ppc64_elf_reloc_name_lookup (abfd, compat_map[i][1]); | |
1352 | } | |
1353 | ||
157090f7 AM |
1354 | return NULL; |
1355 | } | |
1356 | ||
5bd4f169 AM |
1357 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1358 | ||
0a1b45a2 | 1359 | static bool |
4aef7643 | 1360 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1361 | Elf_Internal_Rela *dst) |
5bd4f169 | 1362 | { |
65f38f15 AM |
1363 | unsigned int type; |
1364 | ||
ef60b7ff | 1365 | /* Initialize howto table if needed. */ |
5bd4f169 | 1366 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1367 | ppc_howto_init (); |
1368 | ||
65f38f15 | 1369 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1370 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1371 | { |
695344c0 | 1372 | /* xgettext:c-format */ |
0aa13fee | 1373 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1374 | abfd, type); |
f3185997 | 1375 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 1376 | return false; |
d0fb9a8d | 1377 | } |
65f38f15 | 1378 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1379 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1380 | { | |
1381 | /* xgettext:c-format */ | |
1382 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1383 | abfd, type); | |
1384 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1385 | return false; |
f3185997 | 1386 | } |
2cdcc330 | 1387 | |
0a1b45a2 | 1388 | return true; |
5bd4f169 AM |
1389 | } |
1390 | ||
04c9666a | 1391 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1392 | |
1393 | static bfd_reloc_status_type | |
4ce794b7 AM |
1394 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1395 | void *data, asection *input_section, | |
1396 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1397 | { |
a680de9a PB |
1398 | enum elf_ppc64_reloc_type r_type; |
1399 | long insn; | |
1400 | bfd_size_type octets; | |
3de43e7b | 1401 | bfd_vma value; |
a680de9a | 1402 | |
805fc799 AM |
1403 | /* If this is a relocatable link (output_bfd test tells us), just |
1404 | call the generic function. Any adjustment will be done at final | |
1405 | link time. */ | |
1406 | if (output_bfd != NULL) | |
cedb70c5 | 1407 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1408 | input_section, output_bfd, error_message); |
1409 | ||
5663e321 AM |
1410 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1411 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1412 | doesn't matter. */ |
a680de9a | 1413 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1414 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1415 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1416 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1417 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1418 | reloc_entry->addend += 1ULL << 33; | |
1419 | else | |
1420 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1421 | if (r_type != R_PPC64_REL16DX_HA) |
1422 | return bfd_reloc_continue; | |
1423 | ||
1424 | value = 0; | |
1425 | if (!bfd_is_com_section (symbol->section)) | |
1426 | value = symbol->value; | |
1427 | value += (reloc_entry->addend | |
1428 | + symbol->section->output_offset | |
1429 | + symbol->section->output_section->vma); | |
1430 | value -= (reloc_entry->address | |
1431 | + input_section->output_offset | |
1432 | + input_section->output_section->vma); | |
3de43e7b | 1433 | value = (bfd_signed_vma) value >> 16; |
a680de9a | 1434 | |
bb294208 | 1435 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
a680de9a PB |
1436 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1437 | insn &= ~0x1fffc1; | |
3de43e7b | 1438 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1439 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1440 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1441 | return bfd_reloc_overflow; |
1442 | return bfd_reloc_ok; | |
805fc799 | 1443 | } |
5bd4f169 | 1444 | |
2441e016 AM |
1445 | static bfd_reloc_status_type |
1446 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1447 | void *data, asection *input_section, | |
1448 | bfd *output_bfd, char **error_message) | |
1449 | { | |
1450 | if (output_bfd != NULL) | |
1451 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1452 | input_section, output_bfd, error_message); | |
1453 | ||
699733f6 AM |
1454 | if (strcmp (symbol->section->name, ".opd") == 0 |
1455 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1456 | { |
1457 | bfd_vma dest = opd_entry_value (symbol->section, | |
1458 | symbol->value + reloc_entry->addend, | |
0a1b45a2 | 1459 | NULL, NULL, false); |
2441e016 AM |
1460 | if (dest != (bfd_vma) -1) |
1461 | reloc_entry->addend = dest - (symbol->value | |
1462 | + symbol->section->output_section->vma | |
1463 | + symbol->section->output_offset); | |
1464 | } | |
810d4e75 AM |
1465 | else |
1466 | { | |
1467 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1468 | ||
1469 | if (symbol->section->owner != abfd | |
9f284bf9 | 1470 | && symbol->section->owner != NULL |
810d4e75 AM |
1471 | && abiversion (symbol->section->owner) >= 2) |
1472 | { | |
1473 | unsigned int i; | |
1474 | ||
1475 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1476 | { | |
1477 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1478 | ||
1479 | if (strcmp (symdef->name, symbol->name) == 0) | |
1480 | { | |
1481 | elfsym = (elf_symbol_type *) symdef; | |
1482 | break; | |
1483 | } | |
1484 | } | |
1485 | } | |
1486 | reloc_entry->addend | |
1487 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1488 | } | |
2441e016 AM |
1489 | return bfd_reloc_continue; |
1490 | } | |
1491 | ||
805fc799 | 1492 | static bfd_reloc_status_type |
4ce794b7 AM |
1493 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1494 | void *data, asection *input_section, | |
1495 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1496 | { |
1497 | long insn; | |
04c9666a | 1498 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1499 | bfd_size_type octets; |
794e51c0 | 1500 | /* Assume 'at' branch hints. */ |
0a1b45a2 | 1501 | bool is_isa_v2 = true; |
805fc799 AM |
1502 | |
1503 | /* If this is a relocatable link (output_bfd test tells us), just | |
1504 | call the generic function. Any adjustment will be done at final | |
1505 | link time. */ | |
5bd4f169 | 1506 | if (output_bfd != NULL) |
cedb70c5 | 1507 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1508 | input_section, output_bfd, error_message); |
1509 | ||
bb294208 | 1510 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1511 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1512 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1513 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1514 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1515 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1516 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1517 | |
794e51c0 | 1518 | if (is_isa_v2) |
5bd4f169 | 1519 | { |
805fc799 AM |
1520 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1521 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1522 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1523 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1524 | insn |= 0x02 << 21; | |
1525 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1526 | insn |= 0x08 << 21; | |
1527 | else | |
2441e016 | 1528 | goto out; |
5bd4f169 | 1529 | } |
805fc799 AM |
1530 | else |
1531 | { | |
1532 | bfd_vma target = 0; | |
1533 | bfd_vma from; | |
5bd4f169 | 1534 | |
805fc799 AM |
1535 | if (!bfd_is_com_section (symbol->section)) |
1536 | target = symbol->value; | |
1537 | target += symbol->section->output_section->vma; | |
1538 | target += symbol->section->output_offset; | |
1539 | target += reloc_entry->addend; | |
5bd4f169 | 1540 | |
805fc799 AM |
1541 | from = (reloc_entry->address |
1542 | + input_section->output_offset | |
1543 | + input_section->output_section->vma); | |
5bd4f169 | 1544 | |
805fc799 AM |
1545 | /* Invert 'y' bit if not the default. */ |
1546 | if ((bfd_signed_vma) (target - from) < 0) | |
1547 | insn ^= 0x01 << 21; | |
1548 | } | |
4ce794b7 | 1549 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1550 | out: |
1551 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1552 | input_section, output_bfd, error_message); | |
805fc799 | 1553 | } |
5bd4f169 | 1554 | |
805fc799 | 1555 | static bfd_reloc_status_type |
4ce794b7 AM |
1556 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1557 | void *data, asection *input_section, | |
1558 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1559 | { |
1560 | /* If this is a relocatable link (output_bfd test tells us), just | |
1561 | call the generic function. Any adjustment will be done at final | |
1562 | link time. */ | |
1563 | if (output_bfd != NULL) | |
cedb70c5 | 1564 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1565 | input_section, output_bfd, error_message); |
5bd4f169 | 1566 | |
805fc799 AM |
1567 | /* Subtract the symbol section base address. */ |
1568 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1569 | return bfd_reloc_continue; |
1570 | } | |
1571 | ||
805fc799 | 1572 | static bfd_reloc_status_type |
4ce794b7 AM |
1573 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1574 | void *data, asection *input_section, | |
1575 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1576 | { |
1577 | /* If this is a relocatable link (output_bfd test tells us), just | |
1578 | call the generic function. Any adjustment will be done at final | |
1579 | link time. */ | |
1580 | if (output_bfd != NULL) | |
cedb70c5 | 1581 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1582 | input_section, output_bfd, error_message); |
1583 | ||
1584 | /* Subtract the symbol section base address. */ | |
1585 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1586 | ||
1587 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1588 | reloc_entry->addend += 0x8000; | |
1589 | return bfd_reloc_continue; | |
1590 | } | |
1591 | ||
1592 | static bfd_reloc_status_type | |
4ce794b7 AM |
1593 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1594 | void *data, asection *input_section, | |
1595 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1596 | { |
1597 | bfd_vma TOCstart; | |
1598 | ||
1599 | /* If this is a relocatable link (output_bfd test tells us), just | |
1600 | call the generic function. Any adjustment will be done at final | |
1601 | link time. */ | |
1602 | if (output_bfd != NULL) | |
cedb70c5 | 1603 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1604 | input_section, output_bfd, error_message); |
1605 | ||
1606 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1607 | if (TOCstart == 0) | |
1c865ab2 | 1608 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1609 | |
1610 | /* Subtract the TOC base address. */ | |
1611 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1612 | return bfd_reloc_continue; | |
1613 | } | |
1614 | ||
1615 | static bfd_reloc_status_type | |
4ce794b7 AM |
1616 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1617 | void *data, asection *input_section, | |
1618 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1619 | { |
1620 | bfd_vma TOCstart; | |
1621 | ||
1622 | /* If this is a relocatable link (output_bfd test tells us), just | |
1623 | call the generic function. Any adjustment will be done at final | |
1624 | link time. */ | |
1625 | if (output_bfd != NULL) | |
cedb70c5 | 1626 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1627 | input_section, output_bfd, error_message); |
1628 | ||
1629 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1630 | if (TOCstart == 0) | |
1c865ab2 | 1631 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1632 | |
1633 | /* Subtract the TOC base address. */ | |
1634 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1635 | ||
1636 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1637 | reloc_entry->addend += 0x8000; | |
1638 | return bfd_reloc_continue; | |
1639 | } | |
1640 | ||
1641 | static bfd_reloc_status_type | |
4ce794b7 AM |
1642 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1643 | void *data, asection *input_section, | |
1644 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1645 | { |
1646 | bfd_vma TOCstart; | |
1647 | bfd_size_type octets; | |
1648 | ||
1649 | /* If this is a relocatable link (output_bfd test tells us), just | |
1650 | call the generic function. Any adjustment will be done at final | |
1651 | link time. */ | |
1652 | if (output_bfd != NULL) | |
cedb70c5 | 1653 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1654 | input_section, output_bfd, error_message); |
1655 | ||
1656 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1657 | if (TOCstart == 0) | |
1c865ab2 | 1658 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 | 1659 | |
bb294208 | 1660 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1661 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); |
1662 | return bfd_reloc_ok; | |
1663 | } | |
1664 | ||
5663e321 AM |
1665 | static bfd_reloc_status_type |
1666 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1667 | void *data, asection *input_section, | |
1668 | bfd *output_bfd, char **error_message) | |
1669 | { | |
1670 | uint64_t insn; | |
1671 | bfd_vma targ; | |
1672 | ||
1673 | if (output_bfd != NULL) | |
1674 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1675 | input_section, output_bfd, error_message); | |
1676 | ||
1677 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1678 | insn <<= 32; | |
1679 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1680 | ||
1681 | targ = (symbol->section->output_section->vma | |
1682 | + symbol->section->output_offset | |
1683 | + reloc_entry->addend); | |
1684 | if (!bfd_is_com_section (symbol->section)) | |
1685 | targ += symbol->value; | |
1686 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1687 | targ += 1ULL << 33; | |
1688 | if (reloc_entry->howto->pc_relative) | |
1689 | { | |
1690 | bfd_vma from = (reloc_entry->address | |
1691 | + input_section->output_offset | |
1692 | + input_section->output_section->vma); | |
1693 | targ -=from; | |
1694 | } | |
1695 | targ >>= reloc_entry->howto->rightshift; | |
1696 | insn &= ~reloc_entry->howto->dst_mask; | |
1697 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1698 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1699 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1700 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1701 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1702 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1703 | return bfd_reloc_overflow; | |
1704 | return bfd_reloc_ok; | |
1705 | } | |
1706 | ||
805fc799 | 1707 | static bfd_reloc_status_type |
4ce794b7 AM |
1708 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1709 | void *data, asection *input_section, | |
1710 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1711 | { |
1712 | /* If this is a relocatable link (output_bfd test tells us), just | |
1713 | call the generic function. Any adjustment will be done at final | |
1714 | link time. */ | |
1715 | if (output_bfd != NULL) | |
cedb70c5 | 1716 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1717 | input_section, output_bfd, error_message); |
1718 | ||
1719 | if (error_message != NULL) | |
1720 | { | |
7fbd5f4e AM |
1721 | static char *message; |
1722 | free (message); | |
1723 | if (asprintf (&message, _("generic linker can't handle %s"), | |
1724 | reloc_entry->howto->name) < 0) | |
1725 | message = NULL; | |
1726 | *error_message = message; | |
805fc799 AM |
1727 | } |
1728 | return bfd_reloc_dangerous; | |
1729 | } | |
1730 | ||
927be08e AM |
1731 | /* Track GOT entries needed for a given symbol. We might need more |
1732 | than one got entry per symbol. */ | |
1733 | struct got_entry | |
1734 | { | |
1735 | struct got_entry *next; | |
1736 | ||
1737 | /* The symbol addend that we'll be placing in the GOT. */ | |
1738 | bfd_vma addend; | |
1739 | ||
1740 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1741 | symbol referenced from different input files. This is to support | |
1742 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1743 | from one input file to another. After partitioning into TOC groups | |
1744 | we merge entries within the group. | |
1745 | ||
1746 | Point to the BFD owning this GOT entry. */ | |
1747 | bfd *owner; | |
1748 | ||
1749 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1750 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1751 | unsigned char tls_type; |
927be08e AM |
1752 | |
1753 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1754 | unsigned char is_indirect; |
927be08e AM |
1755 | |
1756 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1757 | union | |
2cdcc330 AM |
1758 | { |
1759 | bfd_signed_vma refcount; | |
1760 | bfd_vma offset; | |
1761 | struct got_entry *ent; | |
1762 | } got; | |
927be08e AM |
1763 | }; |
1764 | ||
1765 | /* The same for PLT. */ | |
1766 | struct plt_entry | |
1767 | { | |
1768 | struct plt_entry *next; | |
1769 | ||
1770 | bfd_vma addend; | |
1771 | ||
1772 | union | |
2cdcc330 AM |
1773 | { |
1774 | bfd_signed_vma refcount; | |
1775 | bfd_vma offset; | |
1776 | } plt; | |
927be08e AM |
1777 | }; |
1778 | ||
e717da7e AM |
1779 | struct ppc64_elf_obj_tdata |
1780 | { | |
1781 | struct elf_obj_tdata elf; | |
1782 | ||
1783 | /* Shortcuts to dynamic linker sections. */ | |
1784 | asection *got; | |
1785 | asection *relgot; | |
1786 | ||
b3fac117 AM |
1787 | /* Used during garbage collection. We attach global symbols defined |
1788 | on removed .opd entries to this section so that the sym is removed. */ | |
1789 | asection *deleted_section; | |
81688140 | 1790 | |
927be08e | 1791 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1792 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1793 | struct got_entry tlsld_got; |
8860955f | 1794 | |
2cdcc330 AM |
1795 | union |
1796 | { | |
729eabd5 AM |
1797 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1798 | Elf_Internal_Rela *relocs; | |
1799 | ||
1800 | /* Section contents. */ | |
1801 | bfd_byte *contents; | |
1802 | } opd; | |
d77c8a4b AM |
1803 | |
1804 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1805 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1806 | unsigned int has_small_toc_reloc : 1; |
1807 | ||
560c8763 AM |
1808 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1809 | instruction not one we handle. */ | |
1810 | unsigned int unexpected_toc_insn : 1; | |
066f4018 | 1811 | |
903b777d AM |
1812 | /* Set if PLT/GOT/TOC relocs that can be optimised are present in |
1813 | this file. */ | |
1814 | unsigned int has_optrel : 1; | |
e717da7e AM |
1815 | }; |
1816 | ||
1817 | #define ppc64_elf_tdata(bfd) \ | |
1818 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1819 | ||
1820 | #define ppc64_tlsld_got(bfd) \ | |
1821 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1822 | ||
0c8d6e5c AM |
1823 | #define is_ppc64_elf(bfd) \ |
1824 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1825 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1826 | |
e717da7e AM |
1827 | /* Override the generic function because we store some extras. */ |
1828 | ||
0a1b45a2 | 1829 | static bool |
e717da7e AM |
1830 | ppc64_elf_mkobject (bfd *abfd) |
1831 | { | |
0ffa91dd | 1832 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1833 | PPC64_ELF_DATA); |
e717da7e AM |
1834 | } |
1835 | ||
feee612b | 1836 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1837 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1838 | |
0a1b45a2 | 1839 | static bool |
4ce794b7 | 1840 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1841 | { |
14b57c7c | 1842 | if (!abfd->arch_info->the_default) |
0a1b45a2 | 1843 | return true; |
14b57c7c AM |
1844 | |
1845 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1846 | { |
1847 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1848 | ||
1849 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1850 | { | |
1851 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1852 | abfd->arch_info = abfd->arch_info->next; | |
1853 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1854 | } | |
1855 | } | |
14b57c7c | 1856 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1857 | } |
1858 | ||
d37c89e5 AM |
1859 | /* Support for core dump NOTE sections. */ |
1860 | ||
0a1b45a2 | 1861 | static bool |
d37c89e5 AM |
1862 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
1863 | { | |
eea6121a | 1864 | size_t offset, size; |
d37c89e5 AM |
1865 | |
1866 | if (note->descsz != 504) | |
0a1b45a2 | 1867 | return false; |
d37c89e5 AM |
1868 | |
1869 | /* pr_cursig */ | |
228e534f | 1870 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1871 | |
1872 | /* pr_pid */ | |
228e534f | 1873 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1874 | |
1875 | /* pr_reg */ | |
1876 | offset = 112; | |
eea6121a | 1877 | size = 384; |
d37c89e5 AM |
1878 | |
1879 | /* Make a ".reg/999" section. */ | |
1880 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1881 | size, note->descpos + offset); |
d37c89e5 AM |
1882 | } |
1883 | ||
0a1b45a2 | 1884 | static bool |
d37c89e5 AM |
1885 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
1886 | { | |
1887 | if (note->descsz != 136) | |
0a1b45a2 | 1888 | return false; |
d37c89e5 | 1889 | |
228e534f | 1890 | elf_tdata (abfd)->core->pid |
bc989cdc | 1891 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1892 | elf_tdata (abfd)->core->program |
d37c89e5 | 1893 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1894 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1895 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1896 | ||
0a1b45a2 | 1897 | return true; |
d37c89e5 AM |
1898 | } |
1899 | ||
183e98be AM |
1900 | static char * |
1901 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1902 | ...) | |
1903 | { | |
1904 | switch (note_type) | |
1905 | { | |
1906 | default: | |
1907 | return NULL; | |
1908 | ||
1909 | case NT_PRPSINFO: | |
1910 | { | |
9ef6d1e3 | 1911 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1912 | va_list ap; |
1913 | ||
1914 | va_start (ap, note_type); | |
75cd47ed | 1915 | memset (data, 0, sizeof (data)); |
183e98be | 1916 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1917 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1918 | DIAGNOSTIC_PUSH; |
be3e27bb | 1919 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1920 | -Wstringop-truncation: |
1921 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1922 | */ | |
95da9854 L |
1923 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1924 | #endif | |
183e98be | 1925 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1926 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1927 | DIAGNOSTIC_POP; |
fe75810f | 1928 | #endif |
183e98be AM |
1929 | va_end (ap); |
1930 | return elfcore_write_note (abfd, buf, bufsiz, | |
1931 | "CORE", note_type, data, sizeof (data)); | |
1932 | } | |
1933 | ||
1934 | case NT_PRSTATUS: | |
1935 | { | |
1936 | char data[504]; | |
1937 | va_list ap; | |
1938 | long pid; | |
1939 | int cursig; | |
1940 | const void *greg; | |
1941 | ||
1942 | va_start (ap, note_type); | |
1943 | memset (data, 0, 112); | |
1944 | pid = va_arg (ap, long); | |
1945 | bfd_put_32 (abfd, pid, data + 32); | |
1946 | cursig = va_arg (ap, int); | |
1947 | bfd_put_16 (abfd, cursig, data + 12); | |
1948 | greg = va_arg (ap, const void *); | |
1949 | memcpy (data + 112, greg, 384); | |
1950 | memset (data + 496, 0, 8); | |
1951 | va_end (ap); | |
1952 | return elfcore_write_note (abfd, buf, bufsiz, | |
1953 | "CORE", note_type, data, sizeof (data)); | |
1954 | } | |
1955 | } | |
1956 | } | |
1957 | ||
5d35169e AM |
1958 | /* Add extra PPC sections. */ |
1959 | ||
2cdcc330 | 1960 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1961 | { |
07d6d2b8 AM |
1962 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1963 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1964 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1965 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1966 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1967 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1968 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1969 | }; |
1970 | ||
7c8fe5c4 AM |
1971 | enum _ppc64_sec_type { |
1972 | sec_normal = 0, | |
1973 | sec_opd = 1, | |
1974 | sec_toc = 2 | |
1975 | }; | |
1976 | ||
f0abc2a1 AM |
1977 | struct _ppc64_elf_section_data |
1978 | { | |
1979 | struct bfd_elf_section_data elf; | |
411e1bfb | 1980 | |
f0abc2a1 AM |
1981 | union |
1982 | { | |
51aecdc5 AM |
1983 | /* An array with one entry for each opd function descriptor, |
1984 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1985 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1986 | struct _opd_sec_data |
1987 | { | |
1988 | /* Points to the function code section for local opd entries. */ | |
1989 | asection **func_sec; | |
1990 | ||
1991 | /* After editing .opd, adjust references to opd local syms. */ | |
1992 | long *adjust; | |
1993 | } opd; | |
7c8fe5c4 | 1994 | |
3a71aa26 AM |
1995 | /* An array for toc sections, indexed by offset/8. */ |
1996 | struct _toc_sec_data | |
1997 | { | |
1998 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1999 | unsigned *symndx; | |
2000 | ||
2001 | /* And the relocation addend. */ | |
2002 | bfd_vma *add; | |
2003 | } toc; | |
7c8fe5c4 AM |
2004 | } u; |
2005 | ||
2006 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2007 | |
7c8fe5c4 AM |
2008 | /* Flag set when small branches are detected. Used to |
2009 | select suitable defaults for the stub group size. */ | |
2010 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
2011 | |
2012 | /* Flag set when PLTCALL relocs are detected. */ | |
2013 | unsigned int has_pltcall:1; | |
066f4018 | 2014 | |
903b777d AM |
2015 | /* Flag set when section has PLT/GOT/TOC relocations that can be |
2016 | optimised. */ | |
2017 | unsigned int has_optrel:1; | |
f0abc2a1 AM |
2018 | }; |
2019 | ||
2020 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2021 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 2022 | |
0a1b45a2 | 2023 | static bool |
4ce794b7 | 2024 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2025 | { |
f592407e AM |
2026 | if (!sec->used_by_bfd) |
2027 | { | |
2028 | struct _ppc64_elf_section_data *sdata; | |
986f0783 | 2029 | size_t amt = sizeof (*sdata); |
f0abc2a1 | 2030 | |
f592407e AM |
2031 | sdata = bfd_zalloc (abfd, amt); |
2032 | if (sdata == NULL) | |
0a1b45a2 | 2033 | return false; |
f592407e AM |
2034 | sec->used_by_bfd = sdata; |
2035 | } | |
f0abc2a1 AM |
2036 | |
2037 | return _bfd_elf_new_section_hook (abfd, sec); | |
2038 | } | |
4025353c | 2039 | |
0a1b45a2 | 2040 | static bool |
bf577467 AM |
2041 | ppc64_elf_section_flags (const Elf_Internal_Shdr *hdr) |
2042 | { | |
2043 | const char *name = hdr->bfd_section->name; | |
2044 | ||
3f3328b8 ML |
2045 | if (startswith (name, ".sbss") |
2046 | || startswith (name, ".sdata")) | |
bf577467 AM |
2047 | hdr->bfd_section->flags |= SEC_SMALL_DATA; |
2048 | ||
0a1b45a2 | 2049 | return true; |
bf577467 AM |
2050 | } |
2051 | ||
74f0fb50 | 2052 | static struct _opd_sec_data * |
4025353c AM |
2053 | get_opd_info (asection * sec) |
2054 | { | |
2055 | if (sec != NULL | |
2056 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2057 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2058 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2059 | return NULL; |
2060 | } | |
90e3cdf2 JJ |
2061 | \f |
2062 | /* Parameters for the qsort hook. */ | |
0a1b45a2 | 2063 | static bool synthetic_relocatable; |
8cb1c2c8 | 2064 | static const asection *synthetic_opd; |
90e3cdf2 | 2065 | |
699733f6 | 2066 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2067 | |
2068 | static int | |
2069 | compare_symbols (const void *ap, const void *bp) | |
2070 | { | |
2cdcc330 AM |
2071 | const asymbol *a = *(const asymbol **) ap; |
2072 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 2073 | |
699733f6 AM |
2074 | /* Section symbols first. */ |
2075 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2076 | return -1; |
699733f6 | 2077 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2078 | return 1; |
2079 | ||
699733f6 | 2080 | /* then .opd symbols. */ |
cd285db5 AM |
2081 | if (synthetic_opd != NULL) |
2082 | { | |
2083 | if (strcmp (a->section->name, ".opd") == 0 | |
2084 | && strcmp (b->section->name, ".opd") != 0) | |
2085 | return -1; | |
2086 | if (strcmp (a->section->name, ".opd") != 0 | |
2087 | && strcmp (b->section->name, ".opd") == 0) | |
2088 | return 1; | |
2089 | } | |
90e3cdf2 | 2090 | |
699733f6 | 2091 | /* then other code symbols. */ |
2cdcc330 AM |
2092 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2093 | == (SEC_CODE | SEC_ALLOC)) | |
2094 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2095 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2096 | return -1; |
2097 | ||
2cdcc330 AM |
2098 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2099 | != (SEC_CODE | SEC_ALLOC)) | |
2100 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2101 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2102 | return 1; |
2103 | ||
2104 | if (synthetic_relocatable) | |
2105 | { | |
2106 | if (a->section->id < b->section->id) | |
2107 | return -1; | |
2108 | ||
2109 | if (a->section->id > b->section->id) | |
2110 | return 1; | |
2111 | } | |
2112 | ||
2113 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2114 | return -1; | |
2115 | ||
2116 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2117 | return 1; | |
2118 | ||
4d35a0aa AM |
2119 | /* For syms with the same value, prefer strong dynamic global function |
2120 | syms over other syms. */ | |
2121 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2122 | return -1; | |
2123 | ||
2124 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2125 | return 1; | |
2126 | ||
2127 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2128 | return -1; | |
2129 | ||
2130 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2131 | return 1; | |
2132 | ||
2133 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2134 | return -1; | |
2135 | ||
2136 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2137 | return 1; | |
2138 | ||
2139 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2140 | return -1; | |
2141 | ||
2142 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2143 | return 1; | |
2144 | ||
dcea6a95 AM |
2145 | /* Finally, sort on where the symbol is in memory. The symbols will |
2146 | be in at most two malloc'd blocks, one for static syms, one for | |
2147 | dynamic syms, and we distinguish the two blocks above by testing | |
2148 | BSF_DYNAMIC. Since we are sorting the symbol pointers which were | |
2149 | originally in the same order as the symbols (and we're not | |
2150 | sorting the symbols themselves), this ensures a stable sort. */ | |
2151 | if (a < b) | |
2152 | return -1; | |
2153 | if (a > b) | |
2154 | return 1; | |
2155 | return 0; | |
90e3cdf2 JJ |
2156 | } |
2157 | ||
699733f6 | 2158 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2159 | |
699733f6 | 2160 | static asymbol * |
9ad9b810 AM |
2161 | sym_exists_at (asymbol **syms, size_t lo, size_t hi, unsigned int id, |
2162 | bfd_vma value) | |
90e3cdf2 | 2163 | { |
9ad9b810 | 2164 | size_t mid; |
90e3cdf2 | 2165 | |
7292b3ac | 2166 | if (id == (unsigned) -1) |
699733f6 AM |
2167 | { |
2168 | while (lo < hi) | |
2169 | { | |
2170 | mid = (lo + hi) >> 1; | |
2171 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2172 | lo = mid + 1; | |
2173 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2174 | hi = mid; | |
2175 | else | |
2176 | return syms[mid]; | |
2177 | } | |
2178 | } | |
2179 | else | |
2180 | { | |
2181 | while (lo < hi) | |
2182 | { | |
2183 | mid = (lo + hi) >> 1; | |
2184 | if (syms[mid]->section->id < id) | |
2185 | lo = mid + 1; | |
2186 | else if (syms[mid]->section->id > id) | |
2187 | hi = mid; | |
2188 | else if (syms[mid]->value < value) | |
2189 | lo = mid + 1; | |
2190 | else if (syms[mid]->value > value) | |
2191 | hi = mid; | |
2192 | else | |
2193 | return syms[mid]; | |
2194 | } | |
2195 | } | |
2196 | return NULL; | |
90e3cdf2 JJ |
2197 | } |
2198 | ||
0a1b45a2 | 2199 | static bool |
468392fb AM |
2200 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) |
2201 | { | |
2202 | bfd_vma vma = *(bfd_vma *) ptr; | |
2203 | return ((section->flags & SEC_ALLOC) != 0 | |
2204 | && section->vma <= vma | |
2205 | && vma < section->vma + section->size); | |
2206 | } | |
2207 | ||
699733f6 | 2208 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2209 | entry syms. Also generate @plt symbols for the glink branch table. |
2210 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2211 | |
2212 | static long | |
a7535cf3 AM |
2213 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2214 | long static_count, asymbol **static_syms, | |
2215 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2216 | asymbol **ret) |
90e3cdf2 JJ |
2217 | { |
2218 | asymbol *s; | |
0ccf57bd | 2219 | size_t i, j, count; |
90e3cdf2 | 2220 | char *names; |
0ccf57bd | 2221 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2222 | asection *opd = NULL; |
0a1b45a2 | 2223 | bool relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2224 | asymbol **syms; |
ee67d69a | 2225 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2226 | |
2227 | *ret = NULL; | |
2228 | ||
ee67d69a AM |
2229 | if (abi < 2) |
2230 | { | |
2231 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2232 | if (opd == NULL && abi == 1) | |
2233 | return 0; | |
2234 | } | |
90e3cdf2 | 2235 | |
a5259595 AM |
2236 | syms = NULL; |
2237 | codesecsym = 0; | |
2238 | codesecsymend = 0; | |
2239 | secsymend = 0; | |
2240 | opdsymend = 0; | |
2241 | symcount = 0; | |
2242 | if (opd != NULL) | |
c9727e01 | 2243 | { |
a5259595 AM |
2244 | symcount = static_count; |
2245 | if (!relocatable) | |
2246 | symcount += dyn_count; | |
2247 | if (symcount == 0) | |
2248 | return 0; | |
c9727e01 | 2249 | |
a5259595 AM |
2250 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2251 | if (syms == NULL) | |
2252 | return -1; | |
90e3cdf2 | 2253 | |
a5259595 AM |
2254 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2255 | { | |
2256 | /* Use both symbol tables. */ | |
2257 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2258 | memcpy (syms + static_count, dyn_syms, | |
2259 | (dyn_count + 1) * sizeof (*syms)); | |
2260 | } | |
2261 | else if (!relocatable && static_count == 0) | |
2262 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2263 | else | |
2264 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2265 | |
0ccf57bd AM |
2266 | /* Trim uninteresting symbols. Interesting symbols are section, |
2267 | function, and notype symbols. */ | |
2268 | for (i = 0, j = 0; i < symcount; ++i) | |
2269 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2270 | | BSF_RELC | BSF_SRELC)) == 0) | |
2271 | syms[j++] = syms[i]; | |
2272 | symcount = j; | |
2273 | ||
a5259595 AM |
2274 | synthetic_relocatable = relocatable; |
2275 | synthetic_opd = opd; | |
2276 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2277 | |
a5259595 AM |
2278 | if (!relocatable && symcount > 1) |
2279 | { | |
bfa5bd2a PA |
2280 | /* Trim duplicate syms, since we may have merged the normal |
2281 | and dynamic symbols. Actually, we only care about syms | |
2282 | that have different values, so trim any with the same | |
2283 | value. Don't consider ifunc and ifunc resolver symbols | |
2284 | duplicates however, because GDB wants to know whether a | |
2285 | text symbol is an ifunc resolver. */ | |
a5259595 | 2286 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2287 | { |
2288 | const asymbol *s0 = syms[i - 1]; | |
2289 | const asymbol *s1 = syms[i]; | |
2290 | ||
2291 | if ((s0->value + s0->section->vma | |
2292 | != s1->value + s1->section->vma) | |
2293 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2294 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2295 | syms[j++] = syms[i]; | |
2296 | } | |
a5259595 AM |
2297 | symcount = j; |
2298 | } | |
699733f6 | 2299 | |
a5259595 AM |
2300 | i = 0; |
2301 | /* Note that here and in compare_symbols we can't compare opd and | |
2302 | sym->section directly. With separate debug info files, the | |
2303 | symbols will be extracted from the debug file while abfd passed | |
2304 | to this function is the real binary. */ | |
8bd10d6b AM |
2305 | if ((syms[i]->flags & BSF_SECTION_SYM) != 0 |
2306 | && strcmp (syms[i]->section->name, ".opd") == 0) | |
a5259595 AM |
2307 | ++i; |
2308 | codesecsym = i; | |
2309 | ||
2310 | for (; i < symcount; ++i) | |
2311 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2312 | | SEC_THREAD_LOCAL)) | |
2313 | != (SEC_CODE | SEC_ALLOC)) | |
2314 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2315 | break; | |
2316 | codesecsymend = i; | |
2317 | ||
2318 | for (; i < symcount; ++i) | |
2319 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2320 | break; | |
2321 | secsymend = i; | |
2322 | ||
2323 | for (; i < symcount; ++i) | |
2324 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2325 | break; | |
2326 | opdsymend = i; | |
2327 | ||
2328 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2329 | if (((syms[i]->section->flags |
2330 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2331 | != (SEC_CODE | SEC_ALLOC)) |
2332 | break; | |
2333 | symcount = i; | |
2334 | } | |
c9727e01 | 2335 | count = 0; |
90e3cdf2 | 2336 | |
699733f6 | 2337 | if (relocatable) |
90e3cdf2 | 2338 | { |
0a1b45a2 | 2339 | bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool); |
699733f6 AM |
2340 | arelent *r; |
2341 | size_t size; | |
0ccf57bd | 2342 | size_t relcount; |
90e3cdf2 | 2343 | |
468392fb AM |
2344 | if (opdsymend == secsymend) |
2345 | goto done; | |
2346 | ||
699733f6 | 2347 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2348 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2349 | if (relcount == 0) |
c9727e01 | 2350 | goto done; |
90e3cdf2 | 2351 | |
0a1b45a2 | 2352 | if (!(*slurp_relocs) (abfd, opd, static_syms, false)) |
7356fed5 AM |
2353 | { |
2354 | count = -1; | |
2355 | goto done; | |
2356 | } | |
2357 | ||
699733f6 | 2358 | size = 0; |
595da8c5 | 2359 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2360 | { |
2361 | asymbol *sym; | |
90e3cdf2 | 2362 | |
595da8c5 | 2363 | while (r < opd->relocation + relcount |
699733f6 AM |
2364 | && r->address < syms[i]->value + opd->vma) |
2365 | ++r; | |
90e3cdf2 | 2366 | |
595da8c5 | 2367 | if (r == opd->relocation + relcount) |
699733f6 | 2368 | break; |
90e3cdf2 | 2369 | |
699733f6 AM |
2370 | if (r->address != syms[i]->value + opd->vma) |
2371 | continue; | |
90e3cdf2 | 2372 | |
699733f6 AM |
2373 | if (r->howto->type != R_PPC64_ADDR64) |
2374 | continue; | |
90e3cdf2 | 2375 | |
699733f6 AM |
2376 | sym = *r->sym_ptr_ptr; |
2377 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2378 | sym->section->id, sym->value + r->addend)) | |
2379 | { | |
2380 | ++count; | |
2381 | size += sizeof (asymbol); | |
2382 | size += strlen (syms[i]->name) + 2; | |
2383 | } | |
2384 | } | |
90e3cdf2 | 2385 | |
c4b0b099 AM |
2386 | if (size == 0) |
2387 | goto done; | |
699733f6 AM |
2388 | s = *ret = bfd_malloc (size); |
2389 | if (s == NULL) | |
2390 | { | |
7356fed5 | 2391 | count = -1; |
c9727e01 | 2392 | goto done; |
699733f6 | 2393 | } |
90e3cdf2 | 2394 | |
699733f6 | 2395 | names = (char *) (s + count); |
90e3cdf2 | 2396 | |
595da8c5 | 2397 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2398 | { |
699733f6 | 2399 | asymbol *sym; |
90e3cdf2 | 2400 | |
595da8c5 | 2401 | while (r < opd->relocation + relcount |
699733f6 AM |
2402 | && r->address < syms[i]->value + opd->vma) |
2403 | ++r; | |
90e3cdf2 | 2404 | |
595da8c5 | 2405 | if (r == opd->relocation + relcount) |
699733f6 AM |
2406 | break; |
2407 | ||
2408 | if (r->address != syms[i]->value + opd->vma) | |
2409 | continue; | |
2410 | ||
2411 | if (r->howto->type != R_PPC64_ADDR64) | |
2412 | continue; | |
90e3cdf2 | 2413 | |
699733f6 AM |
2414 | sym = *r->sym_ptr_ptr; |
2415 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2416 | sym->section->id, sym->value + r->addend)) | |
2417 | { | |
2418 | size_t len; | |
2419 | ||
2420 | *s = *syms[i]; | |
6ba2a415 | 2421 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2422 | s->section = sym->section; |
2423 | s->value = sym->value + r->addend; | |
2424 | s->name = names; | |
2425 | *names++ = '.'; | |
2426 | len = strlen (syms[i]->name); | |
2427 | memcpy (names, syms[i]->name, len + 1); | |
2428 | names += len + 1; | |
6f610d07 UW |
2429 | /* Have udata.p point back to the original symbol this |
2430 | synthetic symbol was derived from. */ | |
2431 | s->udata.p = syms[i]; | |
699733f6 AM |
2432 | s++; |
2433 | } | |
2434 | } | |
2435 | } | |
2436 | else | |
90e3cdf2 | 2437 | { |
0a1b45a2 | 2438 | bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool); |
ee67d69a | 2439 | bfd_byte *contents = NULL; |
699733f6 | 2440 | size_t size; |
0ccf57bd | 2441 | size_t plt_count = 0; |
468392fb AM |
2442 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2443 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2444 | arelent *p; | |
90e3cdf2 | 2445 | |
ee67d69a | 2446 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2447 | { |
c4b0b099 AM |
2448 | free_contents_and_exit_err: |
2449 | count = -1; | |
ee67d69a | 2450 | free_contents_and_exit: |
c9594989 | 2451 | free (contents); |
c9727e01 | 2452 | goto done; |
699733f6 | 2453 | } |
90e3cdf2 | 2454 | |
699733f6 AM |
2455 | size = 0; |
2456 | for (i = secsymend; i < opdsymend; ++i) | |
2457 | { | |
2458 | bfd_vma ent; | |
90e3cdf2 | 2459 | |
5ef11c02 AM |
2460 | /* Ignore bogus symbols. */ |
2461 | if (syms[i]->value > opd->size - 8) | |
2462 | continue; | |
2463 | ||
699733f6 AM |
2464 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2465 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2466 | { | |
2467 | ++count; | |
2468 | size += sizeof (asymbol); | |
2469 | size += strlen (syms[i]->name) + 2; | |
2470 | } | |
2471 | } | |
90e3cdf2 | 2472 | |
468392fb | 2473 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2474 | if (dyn_count != 0 |
2475 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2476 | { |
2477 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2478 | size_t extdynsize; | |
2479 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2480 | ||
2481 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2482 | goto free_contents_and_exit_err; |
468392fb AM |
2483 | |
2484 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2485 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2486 | ||
2487 | extdyn = dynbuf; | |
2488 | extdynend = extdyn + dynamic->size; | |
2489 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2490 | { | |
2491 | Elf_Internal_Dyn dyn; | |
2492 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2493 | ||
2494 | if (dyn.d_tag == DT_NULL) | |
2495 | break; | |
2496 | ||
2497 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2498 | { | |
9e390558 AM |
2499 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2500 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2501 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2502 | /* The .glink section usually does not survive the final |
2503 | link; search for the section (usually .text) where the | |
2504 | glink stubs now reside. */ | |
2505 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2506 | &glink_vma); | |
2507 | break; | |
2508 | } | |
2509 | } | |
2510 | ||
2511 | free (dynbuf); | |
2512 | } | |
2513 | ||
2514 | if (glink != NULL) | |
2515 | { | |
2516 | /* Determine __glink trampoline by reading the relative branch | |
2517 | from the first glink stub. */ | |
2518 | bfd_byte buf[4]; | |
b9e5796b AM |
2519 | unsigned int off = 0; |
2520 | ||
2521 | while (bfd_get_section_contents (abfd, glink, buf, | |
2522 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2523 | { |
2524 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2525 | insn ^= B_DOT; | |
2526 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2527 | { |
2cdcc330 AM |
2528 | resolv_vma |
2529 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2530 | break; |
2531 | } | |
2532 | off += 4; | |
2533 | if (off > 4) | |
2534 | break; | |
468392fb AM |
2535 | } |
2536 | ||
2537 | if (resolv_vma) | |
2538 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2539 | |
066ee829 AM |
2540 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2541 | if (relplt != NULL) | |
2542 | { | |
2543 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
0a1b45a2 | 2544 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, true)) |
c4b0b099 | 2545 | goto free_contents_and_exit_err; |
68ffbac6 | 2546 | |
066ee829 AM |
2547 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2548 | size += plt_count * sizeof (asymbol); | |
468392fb | 2549 | |
066ee829 AM |
2550 | p = relplt->relocation; |
2551 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2552 | { |
2553 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2554 | if (p->addend != 0) | |
2555 | size += sizeof ("+0x") - 1 + 16; | |
2556 | } | |
066ee829 | 2557 | } |
468392fb AM |
2558 | } |
2559 | ||
c4b0b099 AM |
2560 | if (size == 0) |
2561 | goto free_contents_and_exit; | |
699733f6 AM |
2562 | s = *ret = bfd_malloc (size); |
2563 | if (s == NULL) | |
c4b0b099 | 2564 | goto free_contents_and_exit_err; |
90e3cdf2 | 2565 | |
468392fb | 2566 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2567 | |
699733f6 | 2568 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2569 | { |
699733f6 | 2570 | bfd_vma ent; |
90e3cdf2 | 2571 | |
5ef11c02 AM |
2572 | if (syms[i]->value > opd->size - 8) |
2573 | continue; | |
2574 | ||
699733f6 AM |
2575 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2576 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2577 | { |
0ccf57bd | 2578 | size_t lo, hi; |
699733f6 | 2579 | size_t len; |
c9727e01 | 2580 | asection *sec = abfd->sections; |
90e3cdf2 | 2581 | |
699733f6 AM |
2582 | *s = *syms[i]; |
2583 | lo = codesecsym; | |
2584 | hi = codesecsymend; | |
2585 | while (lo < hi) | |
2586 | { | |
0ccf57bd | 2587 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2588 | if (syms[mid]->section->vma < ent) |
2589 | lo = mid + 1; | |
2590 | else if (syms[mid]->section->vma > ent) | |
2591 | hi = mid; | |
2592 | else | |
c9727e01 AM |
2593 | { |
2594 | sec = syms[mid]->section; | |
2595 | break; | |
2596 | } | |
699733f6 AM |
2597 | } |
2598 | ||
c9727e01 | 2599 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2600 | sec = syms[lo - 1]->section; |
699733f6 AM |
2601 | |
2602 | for (; sec != NULL; sec = sec->next) | |
2603 | { | |
2604 | if (sec->vma > ent) | |
2605 | break; | |
63524580 JK |
2606 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2607 | info file. */ | |
2608 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2609 | break; |
2610 | if ((sec->flags & SEC_CODE) != 0) | |
2611 | s->section = sec; | |
2612 | } | |
6ba2a415 | 2613 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2614 | s->value = ent - s->section->vma; |
2615 | s->name = names; | |
2616 | *names++ = '.'; | |
2617 | len = strlen (syms[i]->name); | |
2618 | memcpy (names, syms[i]->name, len + 1); | |
2619 | names += len + 1; | |
6f610d07 UW |
2620 | /* Have udata.p point back to the original symbol this |
2621 | synthetic symbol was derived from. */ | |
2622 | s->udata.p = syms[i]; | |
699733f6 | 2623 | s++; |
90e3cdf2 | 2624 | } |
90e3cdf2 | 2625 | } |
699733f6 | 2626 | free (contents); |
468392fb AM |
2627 | |
2628 | if (glink != NULL && relplt != NULL) | |
2629 | { | |
2630 | if (resolv_vma) | |
2631 | { | |
2632 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2633 | memset (s, 0, sizeof *s); |
468392fb | 2634 | s->the_bfd = abfd; |
6ba2a415 | 2635 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2636 | s->section = glink; |
2637 | s->value = resolv_vma - glink->vma; | |
2638 | s->name = names; | |
2cdcc330 AM |
2639 | memcpy (names, "__glink_PLTresolve", |
2640 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2641 | names += sizeof ("__glink_PLTresolve"); |
2642 | s++; | |
2643 | count++; | |
2644 | } | |
2645 | ||
2646 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2647 | stub rather than on the glink branch table entry. The | |
2648 | objdump disassembler would then use a sensible symbol | |
2649 | name on plt calls. The difficulty in doing so is | |
2650 | a) finding the stubs, and, | |
2651 | b) matching stubs against plt entries, and, | |
2652 | c) there can be multiple stubs for a given plt entry. | |
2653 | ||
2654 | Solving (a) could be done by code scanning, but older | |
2655 | ppc64 binaries used different stubs to current code. | |
2656 | (b) is the tricky one since you need to known the toc | |
2657 | pointer for at least one function that uses a pic stub to | |
2658 | be able to calculate the plt address referenced. | |
2659 | (c) means gdb would need to set multiple breakpoints (or | |
2660 | find the glink branch itself) when setting breakpoints | |
2661 | for pending shared library loads. */ | |
2662 | p = relplt->relocation; | |
2663 | for (i = 0; i < plt_count; i++, p++) | |
2664 | { | |
2665 | size_t len; | |
2666 | ||
2667 | *s = **p->sym_ptr_ptr; | |
2668 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2669 | we are defining a symbol, ensure one of them is set. */ | |
2670 | if ((s->flags & BSF_LOCAL) == 0) | |
2671 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2672 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2673 | s->section = glink; |
2674 | s->value = glink_vma - glink->vma; | |
2675 | s->name = names; | |
2676 | s->udata.p = NULL; | |
2677 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2678 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2679 | names += len; | |
e054468f AM |
2680 | if (p->addend != 0) |
2681 | { | |
2682 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2683 | names += sizeof ("+0x") - 1; | |
2684 | bfd_sprintf_vma (abfd, names, p->addend); | |
2685 | names += strlen (names); | |
2686 | } | |
468392fb AM |
2687 | memcpy (names, "@plt", sizeof ("@plt")); |
2688 | names += sizeof ("@plt"); | |
2689 | s++; | |
b9e5796b AM |
2690 | if (abi < 2) |
2691 | { | |
2692 | glink_vma += 8; | |
2693 | if (i >= 0x8000) | |
2694 | glink_vma += 4; | |
2695 | } | |
2696 | else | |
468392fb AM |
2697 | glink_vma += 4; |
2698 | } | |
2699 | count += plt_count; | |
2700 | } | |
90e3cdf2 JJ |
2701 | } |
2702 | ||
c9727e01 | 2703 | done: |
a7535cf3 | 2704 | free (syms); |
90e3cdf2 JJ |
2705 | return count; |
2706 | } | |
5bd4f169 | 2707 | \f |
65f38f15 AM |
2708 | /* The following functions are specific to the ELF linker, while |
2709 | functions above are used generally. Those named ppc64_elf_* are | |
2710 | called by the main ELF linker code. They appear in this file more | |
2711 | or less in the order in which they are called. eg. | |
2712 | ppc64_elf_check_relocs is called early in the link process, | |
2713 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2714 | called. |
2715 | ||
2716 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2717 | functions have both a function code symbol and a function descriptor | |
2718 | symbol. A call to foo in a relocatable object file looks like: | |
2719 | ||
2720 | . .text | |
2721 | . x: | |
2722 | . bl .foo | |
2723 | . nop | |
2724 | ||
2725 | The function definition in another object file might be: | |
2726 | ||
2727 | . .section .opd | |
2728 | . foo: .quad .foo | |
2729 | . .quad .TOC.@tocbase | |
2730 | . .quad 0 | |
2731 | . | |
2732 | . .text | |
2733 | . .foo: blr | |
2734 | ||
2735 | When the linker resolves the call during a static link, the branch | |
2736 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2737 | If the function definition is in a shared library, things are a little | |
2738 | different: The call goes via a plt call stub, the opd information gets | |
2739 | copied to the plt, and the linker patches the nop. | |
2740 | ||
2741 | . x: | |
2742 | . bl .foo_stub | |
2743 | . ld 2,40(1) | |
2744 | . | |
2745 | . | |
2746 | . .foo_stub: | |
71a39c98 AM |
2747 | . std 2,40(1) # in practice, the call stub |
2748 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2749 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2750 | . ld 12,0(11) | |
2751 | . ld 2,8(11) | |
2752 | . mtctr 12 | |
2753 | . ld 11,16(11) | |
e86ce104 AM |
2754 | . bctr |
2755 | . | |
2756 | . .section .plt | |
2757 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2758 | ||
2759 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2760 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2761 | copying. | |
2762 | ||
2763 | What are the difficulties here? Well, firstly, the relocations | |
2764 | examined by the linker in check_relocs are against the function code | |
2765 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2766 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2767 | to carefully copy dynamic link information from one symbol to the other. | |
2768 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2769 | symbol as is normal for most other backends. We need foo dynamic | |
2770 | instead, at least for an application final link. However, when | |
2771 | creating a shared library containing foo, we need to have both symbols | |
2772 | dynamic so that references to .foo are satisfied during the early | |
2773 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2774 | definition from some other object, eg. a static library. |
2775 | ||
2776 | Update: As of August 2004, we support a new convention. Function | |
2777 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2778 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2779 | |
7c8bbca5 AM |
2780 | /* Of those relocs that might be copied as dynamic relocs, this |
2781 | function selects those that must be copied when linking a shared | |
2782 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2783 | |
1d483afe AM |
2784 | static int |
2785 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2786 | enum elf_ppc64_reloc_type r_type) | |
2787 | { | |
2788 | switch (r_type) | |
2789 | { | |
2790 | default: | |
7c8bbca5 AM |
2791 | /* Only relative relocs can be resolved when the object load |
2792 | address isn't fixed. DTPREL64 is excluded because the | |
2793 | dynamic linker needs to differentiate global dynamic from | |
2794 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2795 | return 1; |
2796 | ||
2797 | case R_PPC64_REL32: | |
2798 | case R_PPC64_REL64: | |
2799 | case R_PPC64_REL30: | |
1bdd8fac AM |
2800 | case R_PPC64_TOC16: |
2801 | case R_PPC64_TOC16_DS: | |
2802 | case R_PPC64_TOC16_LO: | |
2803 | case R_PPC64_TOC16_HI: | |
2804 | case R_PPC64_TOC16_HA: | |
2805 | case R_PPC64_TOC16_LO_DS: | |
1d483afe AM |
2806 | return 0; |
2807 | ||
2808 | case R_PPC64_TPREL16: | |
2809 | case R_PPC64_TPREL16_LO: | |
2810 | case R_PPC64_TPREL16_HI: | |
2811 | case R_PPC64_TPREL16_HA: | |
2812 | case R_PPC64_TPREL16_DS: | |
2813 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2814 | case R_PPC64_TPREL16_HIGH: |
2815 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2816 | case R_PPC64_TPREL16_HIGHER: |
2817 | case R_PPC64_TPREL16_HIGHERA: | |
2818 | case R_PPC64_TPREL16_HIGHEST: | |
2819 | case R_PPC64_TPREL16_HIGHESTA: | |
2820 | case R_PPC64_TPREL64: | |
c213164a | 2821 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
2822 | /* These relocations are relative but in a shared library the |
2823 | linker doesn't know the thread pointer base. */ | |
2824 | return bfd_link_dll (info); | |
1d483afe AM |
2825 | } |
2826 | } | |
65f38f15 | 2827 | |
f4656909 | 2828 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
e1c6cf61 | 2829 | copying dynamic variables from a shared lib into an app's .dynbss |
f4656909 | 2830 | section, and instead use a dynamic relocation to point into the |
e1c6cf61 AM |
2831 | shared lib. With code that gcc generates it is vital that this be |
2832 | enabled; In the PowerPC64 ELFv1 ABI the address of a function is | |
2833 | actually the address of a function descriptor which resides in the | |
2834 | .opd section. gcc uses the descriptor directly rather than going | |
2835 | via the GOT as some other ABIs do, which means that initialized | |
2836 | function pointers reference the descriptor. Thus, a function | |
2837 | pointer initialized to the address of a function in a shared | |
2838 | library will either require a .dynbss copy and a copy reloc, or a | |
2839 | dynamic reloc. Using a .dynbss copy redefines the function | |
2840 | descriptor symbol to point to the copy. This presents a problem as | |
2841 | a PLT entry for that function is also initialized from the function | |
2842 | descriptor symbol and the copy may not be initialized first. */ | |
a23b6845 | 2843 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2844 | |
721956f4 | 2845 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2846 | string. */ |
2847 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2848 | |
2849 | /* Linker stubs. | |
2850 | ppc_stub_long_branch: | |
2851 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2852 | destination, but a 24 bit branch in a stub section will reach. | |
2853 | . b dest | |
2854 | ||
2855 | ppc_stub_plt_branch: | |
2856 | Similar to the above, but a 24 bit branch in the stub section won't | |
2857 | reach its destination. | |
6df4c9c2 AM |
2858 | . addis %r12,%r2,xxx@toc@ha |
2859 | . ld %r12,xxx@toc@l(%r12) | |
71a39c98 | 2860 | . mtctr %r12 |
721956f4 AM |
2861 | . bctr |
2862 | ||
2863 | ppc_stub_plt_call: | |
2c66dc6c AM |
2864 | Used to call a function in a shared library. If it so happens that |
2865 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2866 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2867 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2868 | . addis %r11,%r2,xxx@toc@ha |
2869 | . ld %r12,xxx+0@toc@l(%r11) | |
2870 | . mtctr %r12 | |
2871 | . ld %r2,xxx+8@toc@l(%r11) | |
2872 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2873 | . bctr |
ad8e1ba5 AM |
2874 | |
2875 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2876 | code to adjust the value and save r2 to support multiple toc sections. | |
2877 | A ppc_stub_long_branch with an r2 offset looks like: | |
2878 | . std %r2,40(%r1) | |
2879 | . addis %r2,%r2,off@ha | |
2880 | . addi %r2,%r2,off@l | |
2881 | . b dest | |
2882 | ||
2883 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2884 | . std %r2,40(%r1) | |
6df4c9c2 AM |
2885 | . addis %r12,%r2,xxx@toc@ha |
2886 | . ld %r12,xxx@toc@l(%r12) | |
ad8e1ba5 AM |
2887 | . addis %r2,%r2,off@ha |
2888 | . addi %r2,%r2,off@l | |
71a39c98 | 2889 | . mtctr %r12 |
ad8e1ba5 | 2890 | . bctr |
ac2df442 | 2891 | |
05d0e962 AM |
2892 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2893 | variants exist too, simpler for plt calls since a new toc pointer | |
2894 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2895 | has some more complex stubs to handle calls marked with NOTOC | |
2896 | relocs from functions where r2 is not a valid toc pointer. These | |
2897 | come in two flavours, the ones shown below, and _both variants that | |
2898 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2899 | one call is from a function where r2 is used as the toc pointer but | |
2900 | needs a toc adjusting stub for small-model multi-toc, and another | |
2901 | call is from a function where r2 is not valid. | |
2902 | ppc_stub_long_branch_notoc: | |
2903 | . mflr %r12 | |
2904 | . bcl 20,31,1f | |
2905 | . 1: | |
2906 | . mflr %r11 | |
2907 | . mtlr %r12 | |
2cdcc330 AM |
2908 | . addis %r12,%r11,dest-1b@ha |
2909 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2910 | . b dest |
2911 | ||
2912 | ppc_stub_plt_branch_notoc: | |
2913 | . mflr %r12 | |
2914 | . bcl 20,31,1f | |
2915 | . 1: | |
2916 | . mflr %r11 | |
2917 | . mtlr %r12 | |
2918 | . lis %r12,xxx-1b@highest | |
f891966f | 2919 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2920 | . sldi %r12,%r12,32 |
f891966f | 2921 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2922 | . ori %r12,%r12,xxx-1b@l |
2923 | . add %r12,%r11,%r12 | |
2924 | . mtctr %r12 | |
2925 | . bctr | |
2926 | ||
2927 | ppc_stub_plt_call_notoc: | |
2928 | . mflr %r12 | |
2929 | . bcl 20,31,1f | |
2930 | . 1: | |
2931 | . mflr %r11 | |
2932 | . mtlr %r12 | |
2933 | . lis %r12,xxx-1b@highest | |
f891966f | 2934 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2935 | . sldi %r12,%r12,32 |
f891966f | 2936 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2937 | . ori %r12,%r12,xxx-1b@l |
2938 | . ldx %r12,%r11,%r12 | |
2939 | . mtctr %r12 | |
2940 | . bctr | |
2941 | ||
7c1f4227 | 2942 | There are also ELFv1 power10 variants of these stubs. |
04bdff6a | 2943 | ppc_stub_long_branch_notoc: |
d4b87b1e | 2944 | . pla %r12,dest@pcrel |
04bdff6a AM |
2945 | . b dest |
2946 | ppc_stub_plt_branch_notoc: | |
2947 | . lis %r11,(dest-1f)@highesta34 | |
2948 | . ori %r11,%r11,(dest-1f)@highera34 | |
2949 | . sldi %r11,%r11,34 | |
d4b87b1e | 2950 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2951 | . add %r12,%r11,%r12 |
2952 | . mtctr %r12 | |
2953 | . bctr | |
2954 | ppc_stub_plt_call_notoc: | |
2955 | . lis %r11,(xxx-1f)@highesta34 | |
2956 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2957 | . sldi %r11,%r11,34 | |
d4b87b1e | 2958 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2959 | . ldx %r12,%r11,%r12 |
2960 | . mtctr %r12 | |
2961 | . bctr | |
2962 | ||
05d0e962 AM |
2963 | In cases where the high instructions would add zero, they are |
2964 | omitted and following instructions modified in some cases. | |
7c1f4227 | 2965 | For example, a power10 ppc_stub_plt_call_notoc might simplify down |
04bdff6a AM |
2966 | to |
2967 | . pld %r12,xxx@pcrel | |
2968 | . mtctr %r12 | |
2969 | . bctr | |
05d0e962 AM |
2970 | |
2971 | For a given stub group (a set of sections all using the same toc | |
2972 | pointer value) there will be just one stub type used for any | |
2973 | particular function symbol. For example, if printf is called from | |
2974 | code with the tocsave optimization (ie. r2 saved in function | |
2975 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2976 | and from other code without the tocsave optimization requiring a | |
2977 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2978 | type will be created. Calls with the tocsave optimization will | |
2979 | enter this stub after the instruction saving r2. A similar | |
2980 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2981 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2982 | to call an external function like printf. If other calls to printf | |
2983 | require a ppc_stub_plt_call linkage stub then a single | |
2984 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2985 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2986 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2987 | be created and calls not requiring r2 to be saved will enter the | |
2988 | stub after the r2 save instruction. There is an analogous | |
2989 | hierarchy of long branch and plt branch stubs for local call | |
2990 | linkage. */ | |
721956f4 | 2991 | |
2cdcc330 AM |
2992 | enum ppc_stub_type |
2993 | { | |
721956f4 AM |
2994 | ppc_stub_none, |
2995 | ppc_stub_long_branch, | |
ad8e1ba5 | 2996 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2997 | ppc_stub_long_branch_notoc, |
2998 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2999 | ppc_stub_plt_branch, |
ad8e1ba5 | 3000 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
3001 | ppc_stub_plt_branch_notoc, |
3002 | ppc_stub_plt_branch_both, | |
794e51c0 | 3003 | ppc_stub_plt_call, |
7341d5e2 | 3004 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
3005 | ppc_stub_plt_call_notoc, |
3006 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
3007 | ppc_stub_global_entry, |
3008 | ppc_stub_save_res | |
721956f4 AM |
3009 | }; |
3010 | ||
6f20ed8a AM |
3011 | /* Information on stub grouping. */ |
3012 | struct map_stub | |
3013 | { | |
3014 | /* The stub section. */ | |
3015 | asection *stub_sec; | |
3016 | /* This is the section to which stubs in the group will be attached. */ | |
3017 | asection *link_sec; | |
a4b6fadd AM |
3018 | /* Next group. */ |
3019 | struct map_stub *next; | |
3020 | /* Whether to emit a copy of register save/restore functions in this | |
3021 | group. */ | |
3022 | int needs_save_res; | |
df136d64 AM |
3023 | /* Current offset within stubs after the insn restoring lr in a |
3024 | _notoc or _both stub using bcl for pc-relative addressing, or | |
3025 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
3026 | unsigned int lr_restore; | |
3027 | /* Accumulated size of EH info emitted to describe return address | |
3028 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
3029 | unsigned int eh_size; | |
3030 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
3031 | unsigned int eh_base; | |
6f20ed8a AM |
3032 | }; |
3033 | ||
2cdcc330 AM |
3034 | struct ppc_stub_hash_entry |
3035 | { | |
721956f4 AM |
3036 | /* Base hash table entry structure. */ |
3037 | struct bfd_hash_entry root; | |
3038 | ||
ad8e1ba5 AM |
3039 | enum ppc_stub_type stub_type; |
3040 | ||
6f20ed8a AM |
3041 | /* Group information. */ |
3042 | struct map_stub *group; | |
721956f4 AM |
3043 | |
3044 | /* Offset within stub_sec of the beginning of this stub. */ | |
3045 | bfd_vma stub_offset; | |
3046 | ||
3047 | /* Given the symbol's value and its section we can determine its final | |
3048 | value when building the stubs (so the stub knows where to jump. */ | |
3049 | bfd_vma target_value; | |
3050 | asection *target_section; | |
3051 | ||
721956f4 AM |
3052 | /* The symbol table entry, if any, that this was derived from. */ |
3053 | struct ppc_link_hash_entry *h; | |
e054468f | 3054 | struct plt_entry *plt_ent; |
721956f4 | 3055 | |
2d7ad24e AM |
3056 | /* Symbol type. */ |
3057 | unsigned char symtype; | |
3058 | ||
6911b7dc AM |
3059 | /* Symbol st_other. */ |
3060 | unsigned char other; | |
721956f4 AM |
3061 | }; |
3062 | ||
2cdcc330 AM |
3063 | struct ppc_branch_hash_entry |
3064 | { | |
721956f4 AM |
3065 | /* Base hash table entry structure. */ |
3066 | struct bfd_hash_entry root; | |
3067 | ||
c456f082 | 3068 | /* Offset within branch lookup table. */ |
721956f4 AM |
3069 | unsigned int offset; |
3070 | ||
3071 | /* Generation marker. */ | |
3072 | unsigned int iter; | |
3073 | }; | |
65f38f15 | 3074 | |
19e08130 AM |
3075 | /* Used to track dynamic relocations for local symbols. */ |
3076 | struct ppc_dyn_relocs | |
3077 | { | |
3078 | struct ppc_dyn_relocs *next; | |
3079 | ||
3080 | /* The input section of the reloc. */ | |
3081 | asection *sec; | |
3082 | ||
3083 | /* Total number of relocs copied for the input section. */ | |
3084 | unsigned int count : 31; | |
3085 | ||
3086 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3087 | unsigned int ifunc : 1; | |
3088 | }; | |
3089 | ||
65f38f15 AM |
3090 | struct ppc_link_hash_entry |
3091 | { | |
3092 | struct elf_link_hash_entry elf; | |
3093 | ||
2cdcc330 AM |
3094 | union |
3095 | { | |
b3fac117 AM |
3096 | /* A pointer to the most recently used stub hash entry against this |
3097 | symbol. */ | |
3098 | struct ppc_stub_hash_entry *stub_cache; | |
3099 | ||
3100 | /* A pointer to the next symbol starting with a '.' */ | |
3101 | struct ppc_link_hash_entry *next_dot_sym; | |
3102 | } u; | |
721956f4 | 3103 | |
721956f4 | 3104 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3105 | struct ppc_link_hash_entry *oh; |
721956f4 | 3106 | |
e86ce104 AM |
3107 | /* Flag function code and descriptor symbols. */ |
3108 | unsigned int is_func:1; | |
3109 | unsigned int is_func_descriptor:1; | |
908b32fc | 3110 | unsigned int fake:1; |
411e1bfb | 3111 | |
c5614fa4 AM |
3112 | /* Whether global opd/toc sym has been adjusted or not. |
3113 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3114 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3115 | unsigned int adjust_done:1; |
3116 | ||
a4b6fadd AM |
3117 | /* Set if this is an out-of-line register save/restore function, |
3118 | with non-standard calling convention. */ | |
3119 | unsigned int save_res:1; | |
3120 | ||
8b5f1ed8 AM |
3121 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3122 | even when the duplicate symbol does not provide a definition. */ | |
3123 | unsigned int non_zero_localentry:1; | |
3124 | ||
411e1bfb | 3125 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3126 | Bits are or'd into the mask as the corresponding relocs are |
3127 | encountered during check_relocs, with TLS_TLS being set when any | |
3128 | of the other TLS bits are set. tls_optimize clears bits when | |
3129 | optimizing to indicate the corresponding GOT entry type is not | |
3130 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 3131 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
3132 | These flags are also kept for local symbols. */ |
3133 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3134 | #define TLS_GD 2 /* GD reloc. */ | |
3135 | #define TLS_LD 4 /* LD reloc. */ | |
3136 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3137 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3138 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 3139 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
46e9995a | 3140 | #define TLS_EXPLICIT 256 /* TOC section TLS reloc, not stored. */ |
f961d9dd | 3141 | unsigned char tls_mask; |
37da22e5 AM |
3142 | |
3143 | /* The above field is also used to mark function symbols. In which | |
3144 | case TLS_TLS will be 0. */ | |
3145 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3146 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3147 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3148 | }; |
3149 | ||
ed7007c1 AM |
3150 | static inline struct ppc_link_hash_entry * |
3151 | ppc_elf_hash_entry (struct elf_link_hash_entry *ent) | |
3152 | { | |
3153 | return (struct ppc_link_hash_entry *) ent; | |
3154 | } | |
3155 | ||
30845f11 AM |
3156 | static inline struct elf_link_hash_entry * |
3157 | elf_hash_entry (struct ppc_link_hash_entry *ent) | |
3158 | { | |
3159 | return (struct elf_link_hash_entry *) ent; | |
3160 | } | |
3161 | ||
65f38f15 AM |
3162 | /* ppc64 ELF linker hash table. */ |
3163 | ||
3164 | struct ppc_link_hash_table | |
3165 | { | |
3166 | struct elf_link_hash_table elf; | |
3167 | ||
721956f4 AM |
3168 | /* The stub hash table. */ |
3169 | struct bfd_hash_table stub_hash_table; | |
3170 | ||
3171 | /* Another hash table for plt_branch stubs. */ | |
3172 | struct bfd_hash_table branch_hash_table; | |
3173 | ||
3b421ab3 AM |
3174 | /* Hash table for function prologue tocsave. */ |
3175 | htab_t tocsave_htab; | |
3176 | ||
e7d1c40c AM |
3177 | /* Various options and other info passed from the linker. */ |
3178 | struct ppc64_elf_params *params; | |
721956f4 | 3179 | |
6f20ed8a AM |
3180 | /* The size of sec_info below. */ |
3181 | unsigned int sec_info_arr_size; | |
3182 | ||
3183 | /* Per-section array of extra section info. Done this way rather | |
3184 | than as part of ppc64_elf_section_data so we have the info for | |
3185 | non-ppc64 sections. */ | |
3186 | struct | |
3187 | { | |
3188 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3189 | bfd_vma toc_off; |
6f20ed8a AM |
3190 | |
3191 | union | |
3192 | { | |
3193 | /* The section group that this section belongs to. */ | |
3194 | struct map_stub *group; | |
3195 | /* A temp section list pointer. */ | |
3196 | asection *list; | |
3197 | } u; | |
3198 | } *sec_info; | |
721956f4 | 3199 | |
a4b6fadd AM |
3200 | /* Linked list of groups. */ |
3201 | struct map_stub *group; | |
3202 | ||
ad8e1ba5 AM |
3203 | /* Temp used when calculating TOC pointers. */ |
3204 | bfd_vma toc_curr; | |
bf102f86 AM |
3205 | bfd *toc_bfd; |
3206 | asection *toc_first_sec; | |
ad8e1ba5 | 3207 | |
b3fac117 AM |
3208 | /* Used when adding symbols. */ |
3209 | struct ppc_link_hash_entry *dot_syms; | |
3210 | ||
33e44f2e | 3211 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3212 | asection *glink; |
9e390558 | 3213 | asection *global_entry; |
82bd7b59 | 3214 | asection *sfpr; |
2d7ad24e AM |
3215 | asection *pltlocal; |
3216 | asection *relpltlocal; | |
4ce794b7 AM |
3217 | asection *brlt; |
3218 | asection *relbrlt; | |
58d180e8 | 3219 | asection *glink_eh_frame; |
ec338859 | 3220 | |
8387904d AM |
3221 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3222 | struct ppc_link_hash_entry *tls_get_addr; | |
3223 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
9e7028aa AM |
3224 | struct ppc_link_hash_entry *tga_desc; |
3225 | struct ppc_link_hash_entry *tga_desc_fd; | |
a804e476 | 3226 | struct map_stub *tga_group; |
411e1bfb | 3227 | |
927be08e AM |
3228 | /* The size of reliplt used by got entry relocs. */ |
3229 | bfd_size_type got_reli_size; | |
3230 | ||
9b5ecbd0 | 3231 | /* Statistics. */ |
7341d5e2 | 3232 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3233 | |
ee75fd95 AM |
3234 | /* Number of stubs against global syms. */ |
3235 | unsigned long stub_globals; | |
3236 | ||
ee67d69a AM |
3237 | /* Set if we're linking code with function descriptors. */ |
3238 | unsigned int opd_abi:1; | |
3239 | ||
4c52953f | 3240 | /* Support for multiple toc sections. */ |
33c0ec9d | 3241 | unsigned int do_multi_toc:1; |
4c52953f | 3242 | unsigned int multi_toc_needed:1; |
927be08e | 3243 | unsigned int second_toc_pass:1; |
67f0cbdb | 3244 | unsigned int do_toc_opt:1; |
4c52953f | 3245 | |
9a23f96e AM |
3246 | /* Set if tls optimization is enabled. */ |
3247 | unsigned int do_tls_opt:1; | |
3248 | ||
3e04d765 AM |
3249 | /* Set if inline plt calls should be converted to direct calls. */ |
3250 | unsigned int can_convert_all_inline_plt:1; | |
3251 | ||
5d1634d7 | 3252 | /* Set on error. */ |
99877b66 | 3253 | unsigned int stub_error:1; |
721956f4 | 3254 | |
8c5b4e52 AM |
3255 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3256 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3257 | |
f378ab09 AM |
3258 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3259 | unsigned int has_plt_localentry0:1; | |
3260 | ||
5663e321 AM |
3261 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3262 | unsigned int notoc_plt:1; | |
3263 | ||
e10a07b3 AM |
3264 | /* Whether any code linked seems to be Power10. */ |
3265 | unsigned int has_power10_relocs:1; | |
3266 | ||
721956f4 AM |
3267 | /* Incremented every time we size stubs. */ |
3268 | unsigned int stub_iteration; | |
65f38f15 AM |
3269 | }; |
3270 | ||
4c52953f AM |
3271 | /* Rename some of the generic section flags to better document how they |
3272 | are used here. */ | |
b0dddeec AM |
3273 | |
3274 | /* Nonzero if this section has TLS related relocations. */ | |
3275 | #define has_tls_reloc sec_flg0 | |
3276 | ||
9737e8af AM |
3277 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3278 | relocations. */ | |
3279 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3280 | |
3281 | /* Nonzero if this section has any toc or got relocs. */ | |
3282 | #define has_toc_reloc sec_flg2 | |
3283 | ||
3284 | /* Nonzero if this section has a call to another section that uses | |
3285 | the toc or got. */ | |
d77c8a4b | 3286 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3287 | |
3288 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3289 | #define call_check_in_progress sec_flg4 |
70cc837d | 3290 | #define call_check_done sec_flg5 |
4c52953f | 3291 | |
65f38f15 AM |
3292 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3293 | ||
3294 | #define ppc_hash_table(p) \ | |
573eb292 AM |
3295 | ((is_elf_hash_table ((p)->hash) \ |
3296 | && elf_hash_table_id (elf_hash_table (p)) == PPC64_ELF_DATA) \ | |
3297 | ? (struct ppc_link_hash_table *) (p)->hash : NULL) | |
65f38f15 | 3298 | |
721956f4 AM |
3299 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3300 | ((struct ppc_stub_hash_entry *) \ | |
3301 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3302 | ||
3303 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3304 | ((struct ppc_branch_hash_entry *) \ | |
3305 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3306 | ||
3307 | /* Create an entry in the stub hash table. */ | |
3308 | ||
3309 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3310 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3311 | struct bfd_hash_table *table, | |
3312 | const char *string) | |
721956f4 AM |
3313 | { |
3314 | /* Allocate the structure if it has not already been allocated by a | |
3315 | subclass. */ | |
3316 | if (entry == NULL) | |
3317 | { | |
3318 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3319 | if (entry == NULL) | |
3320 | return entry; | |
3321 | } | |
3322 | ||
3323 | /* Call the allocation method of the superclass. */ | |
3324 | entry = bfd_hash_newfunc (entry, table, string); | |
3325 | if (entry != NULL) | |
3326 | { | |
3327 | struct ppc_stub_hash_entry *eh; | |
3328 | ||
3329 | /* Initialize the local fields. */ | |
3330 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3331 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3332 | eh->group = NULL; |
721956f4 AM |
3333 | eh->stub_offset = 0; |
3334 | eh->target_value = 0; | |
3335 | eh->target_section = NULL; | |
721956f4 | 3336 | eh->h = NULL; |
6911b7dc | 3337 | eh->plt_ent = NULL; |
6911b7dc | 3338 | eh->other = 0; |
721956f4 AM |
3339 | } |
3340 | ||
3341 | return entry; | |
3342 | } | |
3343 | ||
3344 | /* Create an entry in the branch hash table. */ | |
3345 | ||
3346 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3347 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3348 | struct bfd_hash_table *table, | |
3349 | const char *string) | |
721956f4 AM |
3350 | { |
3351 | /* Allocate the structure if it has not already been allocated by a | |
3352 | subclass. */ | |
3353 | if (entry == NULL) | |
3354 | { | |
3355 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3356 | if (entry == NULL) | |
3357 | return entry; | |
3358 | } | |
3359 | ||
3360 | /* Call the allocation method of the superclass. */ | |
3361 | entry = bfd_hash_newfunc (entry, table, string); | |
3362 | if (entry != NULL) | |
3363 | { | |
3364 | struct ppc_branch_hash_entry *eh; | |
3365 | ||
3366 | /* Initialize the local fields. */ | |
3367 | eh = (struct ppc_branch_hash_entry *) entry; | |
3368 | eh->offset = 0; | |
3369 | eh->iter = 0; | |
3370 | } | |
3371 | ||
3372 | return entry; | |
3373 | } | |
3374 | ||
65f38f15 AM |
3375 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3376 | ||
3377 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3378 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3379 | struct bfd_hash_table *table, | |
3380 | const char *string) | |
65f38f15 AM |
3381 | { |
3382 | /* Allocate the structure if it has not already been allocated by a | |
3383 | subclass. */ | |
3384 | if (entry == NULL) | |
3385 | { | |
3386 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3387 | if (entry == NULL) | |
3388 | return entry; | |
3389 | } | |
3390 | ||
3391 | /* Call the allocation method of the superclass. */ | |
3392 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3393 | if (entry != NULL) | |
3394 | { | |
3395 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3396 | ||
b3fac117 | 3397 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3398 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3399 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3400 | ||
3401 | /* When making function calls, old ABI code references function entry | |
3402 | points (dot symbols), while new ABI code references the function | |
3403 | descriptor symbol. We need to make any combination of reference and | |
3404 | definition work together, without breaking archive linking. | |
3405 | ||
3406 | For a defined function "foo" and an undefined call to "bar": | |
3407 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3408 | "bar" too). | |
3409 | A new object defines "foo" and references "bar". | |
3410 | ||
3411 | A new object thus has no problem with its undefined symbols being | |
3412 | satisfied by definitions in an old object. On the other hand, the | |
3413 | old object won't have ".bar" satisfied by a new object. | |
3414 | ||
3415 | Keep a list of newly added dot-symbols. */ | |
3416 | ||
3417 | if (string[0] == '.') | |
3418 | { | |
3419 | struct ppc_link_hash_table *htab; | |
3420 | ||
3421 | htab = (struct ppc_link_hash_table *) table; | |
3422 | eh->u.next_dot_sym = htab->dot_syms; | |
3423 | htab->dot_syms = eh; | |
3424 | } | |
65f38f15 AM |
3425 | } |
3426 | ||
3427 | return entry; | |
3428 | } | |
3429 | ||
2cdcc330 AM |
3430 | struct tocsave_entry |
3431 | { | |
3b421ab3 AM |
3432 | asection *sec; |
3433 | bfd_vma offset; | |
3434 | }; | |
3435 | ||
3436 | static hashval_t | |
3437 | tocsave_htab_hash (const void *p) | |
3438 | { | |
3439 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3440 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3441 | } |
3442 | ||
3443 | static int | |
3444 | tocsave_htab_eq (const void *p1, const void *p2) | |
3445 | { | |
3446 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3447 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3448 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3449 | } | |
3450 | ||
68faa637 AM |
3451 | /* Destroy a ppc64 ELF linker hash table. */ |
3452 | ||
3453 | static void | |
d495ab0d | 3454 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3455 | { |
d495ab0d | 3456 | struct ppc_link_hash_table *htab; |
68faa637 | 3457 | |
d495ab0d | 3458 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3459 | if (htab->tocsave_htab) |
3460 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3461 | bfd_hash_table_free (&htab->branch_hash_table); |
3462 | bfd_hash_table_free (&htab->stub_hash_table); | |
3463 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3464 | } |
3465 | ||
65f38f15 AM |
3466 | /* Create a ppc64 ELF linker hash table. */ |
3467 | ||
3468 | static struct bfd_link_hash_table * | |
4ce794b7 | 3469 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3470 | { |
3471 | struct ppc_link_hash_table *htab; | |
986f0783 | 3472 | size_t amt = sizeof (struct ppc_link_hash_table); |
65f38f15 | 3473 | |
4ce794b7 | 3474 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3475 | if (htab == NULL) |
3476 | return NULL; | |
3477 | ||
66eb6687 | 3478 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3479 | sizeof (struct ppc_link_hash_entry), |
3480 | PPC64_ELF_DATA)) | |
65f38f15 | 3481 | { |
e2d34d7d | 3482 | free (htab); |
65f38f15 AM |
3483 | return NULL; |
3484 | } | |
3485 | ||
721956f4 | 3486 | /* Init the stub hash table too. */ |
66eb6687 AM |
3487 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3488 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3489 | { |
d495ab0d | 3490 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3491 | return NULL; |
3492 | } | |
721956f4 AM |
3493 | |
3494 | /* And the branch hash table. */ | |
66eb6687 AM |
3495 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3496 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3497 | { |
3498 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3499 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3500 | return NULL; |
3501 | } | |
721956f4 | 3502 | |
3b421ab3 AM |
3503 | htab->tocsave_htab = htab_try_create (1024, |
3504 | tocsave_htab_hash, | |
3505 | tocsave_htab_eq, | |
3506 | NULL); | |
3507 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3508 | { |
d495ab0d | 3509 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3510 | return NULL; |
3511 | } | |
d495ab0d | 3512 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3513 | |
3254fd24 AM |
3514 | /* Initializing two fields of the union is just cosmetic. We really |
3515 | only care about glist, but when compiled on a 32-bit host the | |
3516 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3517 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3518 | htab->elf.init_got_refcount.refcount = 0; |
3519 | htab->elf.init_got_refcount.glist = NULL; | |
3520 | htab->elf.init_plt_refcount.refcount = 0; | |
3521 | htab->elf.init_plt_refcount.glist = NULL; | |
3522 | htab->elf.init_got_offset.offset = 0; | |
3523 | htab->elf.init_got_offset.glist = NULL; | |
3524 | htab->elf.init_plt_offset.offset = 0; | |
3525 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3526 | |
65f38f15 AM |
3527 | return &htab->elf.root; |
3528 | } | |
3529 | ||
bfeb4a28 AM |
3530 | /* Create sections for linker generated code. */ |
3531 | ||
0a1b45a2 | 3532 | static bool |
bfeb4a28 AM |
3533 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
3534 | { | |
3535 | struct ppc_link_hash_table *htab; | |
3536 | flagword flags; | |
3537 | ||
3538 | htab = ppc_hash_table (info); | |
3539 | ||
bfeb4a28 AM |
3540 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3541 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3542 | if (htab->params->save_restore_funcs) |
3543 | { | |
3544 | /* Create .sfpr for code to save and restore fp regs. */ | |
3545 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3546 | flags); | |
3547 | if (htab->sfpr == NULL | |
fd361982 | 3548 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
0a1b45a2 | 3549 | return false; |
b32547cd AM |
3550 | } |
3551 | ||
3552 | if (bfd_link_relocatable (info)) | |
0a1b45a2 | 3553 | return true; |
bfeb4a28 AM |
3554 | |
3555 | /* Create .glink for lazy dynamic linking support. */ | |
3556 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3557 | flags); | |
3558 | if (htab->glink == NULL | |
fd361982 | 3559 | || !bfd_set_section_alignment (htab->glink, 3)) |
0a1b45a2 | 3560 | return false; |
bfeb4a28 | 3561 | |
9e390558 AM |
3562 | /* The part of .glink used by global entry stubs, separate so that |
3563 | it can be aligned appropriately without affecting htab->glink. */ | |
3564 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3565 | flags); | |
3566 | if (htab->global_entry == NULL | |
fd361982 | 3567 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
0a1b45a2 | 3568 | return false; |
9e390558 | 3569 | |
bfeb4a28 AM |
3570 | if (!info->no_ld_generated_unwind_info) |
3571 | { | |
3572 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3573 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3574 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3575 | ".eh_frame", | |
3576 | flags); | |
3577 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3578 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
0a1b45a2 | 3579 | return false; |
bfeb4a28 AM |
3580 | } |
3581 | ||
3582 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3583 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3584 | if (htab->elf.iplt == NULL | |
fd361982 | 3585 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
0a1b45a2 | 3586 | return false; |
bfeb4a28 AM |
3587 | |
3588 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3589 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3590 | htab->elf.irelplt |
3591 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3592 | if (htab->elf.irelplt == NULL | |
fd361982 | 3593 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
0a1b45a2 | 3594 | return false; |
bfeb4a28 AM |
3595 | |
3596 | /* Create branch lookup table for plt_branch stubs. */ | |
3597 | flags = (SEC_ALLOC | SEC_LOAD | |
3598 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3599 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3600 | flags); | |
3601 | if (htab->brlt == NULL | |
fd361982 | 3602 | || !bfd_set_section_alignment (htab->brlt, 3)) |
0a1b45a2 | 3603 | return false; |
bfeb4a28 | 3604 | |
2d7ad24e AM |
3605 | /* Local plt entries, put in .branch_lt but a separate section for |
3606 | convenience. */ | |
3607 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3608 | flags); | |
3609 | if (htab->pltlocal == NULL | |
fd361982 | 3610 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
0a1b45a2 | 3611 | return false; |
2d7ad24e | 3612 | |
0e1862bb | 3613 | if (!bfd_link_pic (info)) |
0a1b45a2 | 3614 | return true; |
bfeb4a28 AM |
3615 | |
3616 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3617 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3618 | htab->relbrlt |
3619 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3620 | if (htab->relbrlt == NULL |
fd361982 | 3621 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
0a1b45a2 | 3622 | return false; |
bfeb4a28 | 3623 | |
2d7ad24e AM |
3624 | htab->relpltlocal |
3625 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3626 | if (htab->relpltlocal == NULL | |
fd361982 | 3627 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
0a1b45a2 | 3628 | return false; |
2d7ad24e | 3629 | |
0a1b45a2 | 3630 | return true; |
bfeb4a28 AM |
3631 | } |
3632 | ||
e717da7e AM |
3633 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3634 | ||
0a1b45a2 | 3635 | bool |
e7d1c40c AM |
3636 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3637 | struct ppc64_elf_params *params) | |
e717da7e AM |
3638 | { |
3639 | struct ppc_link_hash_table *htab; | |
3640 | ||
e7d1c40c | 3641 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3642 | |
3643 | /* Always hook our dynamic sections into the first bfd, which is the | |
3644 | linker created stub bfd. This ensures that the GOT header is at | |
3645 | the start of the output TOC section. */ | |
3646 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3647 | htab->elf.dynobj = params->stub_bfd; |
3648 | htab->params = params; | |
bfeb4a28 | 3649 | |
bfeb4a28 | 3650 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3651 | } |
3652 | ||
721956f4 AM |
3653 | /* Build a name for an entry in the stub hash table. */ |
3654 | ||
3655 | static char * | |
4ce794b7 AM |
3656 | ppc_stub_name (const asection *input_section, |
3657 | const asection *sym_sec, | |
3658 | const struct ppc_link_hash_entry *h, | |
3659 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3660 | { |
3661 | char *stub_name; | |
bcaa2f82 | 3662 | ssize_t len; |
721956f4 AM |
3663 | |
3664 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3665 | offsets from a sym as a branch target? In fact, we could | |
3666 | probably assume the addend is always zero. */ | |
3667 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3668 | ||
3669 | if (h) | |
3670 | { | |
3671 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3672 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3673 | if (stub_name == NULL) |
3674 | return stub_name; | |
3675 | ||
bcaa2f82 AM |
3676 | len = sprintf (stub_name, "%08x.%s+%x", |
3677 | input_section->id & 0xffffffff, | |
3678 | h->elf.root.root.string, | |
3679 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3680 | } |
3681 | else | |
3682 | { | |
ad8e1ba5 | 3683 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3684 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3685 | if (stub_name == NULL) |
3686 | return stub_name; | |
3687 | ||
bcaa2f82 AM |
3688 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3689 | input_section->id & 0xffffffff, | |
3690 | sym_sec->id & 0xffffffff, | |
3691 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3692 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3693 | } |
bcaa2f82 | 3694 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3695 | stub_name[len - 2] = 0; |
721956f4 AM |
3696 | return stub_name; |
3697 | } | |
3698 | ||
e10a07b3 AM |
3699 | /* If mixing power10 with non-power10 code and --power10-stubs is not |
3700 | specified (or is auto) then calls using @notoc relocations that | |
3701 | need a stub will utilize power10 instructions in the stub, and | |
3702 | calls without @notoc relocations will not use power10 instructions. | |
3703 | The two classes of stubs are stored in separate stub_hash_table | |
3704 | entries having the same key string. The two entries will always be | |
3705 | adjacent on entry->root.next chain, even if hash table resizing | |
3706 | occurs. This function selects the correct entry to use. */ | |
3707 | ||
3708 | static struct ppc_stub_hash_entry * | |
0a1b45a2 | 3709 | select_alt_stub (struct ppc_stub_hash_entry *entry, bool notoc) |
e10a07b3 | 3710 | { |
0a1b45a2 | 3711 | bool have_notoc; |
e10a07b3 AM |
3712 | |
3713 | have_notoc = (entry->stub_type == ppc_stub_plt_call_notoc | |
3714 | || entry->stub_type == ppc_stub_plt_branch_notoc | |
3715 | || entry->stub_type == ppc_stub_long_branch_notoc); | |
3716 | ||
3717 | if (have_notoc != notoc) | |
3718 | { | |
3719 | const char *stub_name = entry->root.string; | |
3720 | ||
3721 | entry = (struct ppc_stub_hash_entry *) entry->root.next; | |
3722 | if (entry != NULL | |
3723 | && entry->root.string != stub_name) | |
3724 | entry = NULL; | |
3725 | } | |
3726 | ||
3727 | return entry; | |
3728 | } | |
3729 | ||
721956f4 AM |
3730 | /* Look up an entry in the stub hash. Stub entries are cached because |
3731 | creating the stub name takes a bit of time. */ | |
3732 | ||
3733 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3734 | ppc_get_stub_entry (const asection *input_section, |
3735 | const asection *sym_sec, | |
039b3fef | 3736 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3737 | const Elf_Internal_Rela *rel, |
3738 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3739 | { |
3740 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3741 | struct map_stub *group; |
721956f4 AM |
3742 | |
3743 | /* If this input section is part of a group of sections sharing one | |
3744 | stub section, then use the id of the first section in the group. | |
3745 | Stub names need to include a section id, as there may well be | |
3746 | more than one stub used to reach say, printf, and we need to | |
3747 | distinguish between them. */ | |
6f20ed8a | 3748 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3749 | if (group == NULL) |
3750 | return NULL; | |
721956f4 | 3751 | |
b3fac117 AM |
3752 | if (h != NULL && h->u.stub_cache != NULL |
3753 | && h->u.stub_cache->h == h | |
6f20ed8a | 3754 | && h->u.stub_cache->group == group) |
721956f4 | 3755 | { |
b3fac117 | 3756 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3757 | } |
3758 | else | |
3759 | { | |
3760 | char *stub_name; | |
3761 | ||
6f20ed8a | 3762 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3763 | if (stub_name == NULL) |
3764 | return NULL; | |
3765 | ||
3766 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
0a1b45a2 | 3767 | stub_name, false, false); |
721956f4 | 3768 | if (h != NULL) |
b3fac117 | 3769 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3770 | |
3771 | free (stub_name); | |
3772 | } | |
3773 | ||
e10a07b3 AM |
3774 | if (stub_entry != NULL && htab->params->power10_stubs == -1) |
3775 | { | |
0a1b45a2 | 3776 | bool notoc = ELF64_R_TYPE (rel->r_info) == R_PPC64_REL24_NOTOC; |
e10a07b3 AM |
3777 | |
3778 | stub_entry = select_alt_stub (stub_entry, notoc); | |
3779 | } | |
3780 | ||
721956f4 AM |
3781 | return stub_entry; |
3782 | } | |
3783 | ||
3784 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3785 | stub entry are initialised. */ | |
3786 | ||
3787 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3788 | ppc_add_stub (const char *stub_name, |
3789 | asection *section, | |
25f53a85 | 3790 | struct bfd_link_info *info) |
721956f4 | 3791 | { |
25f53a85 | 3792 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3793 | struct map_stub *group; |
721956f4 AM |
3794 | asection *link_sec; |
3795 | asection *stub_sec; | |
3796 | struct ppc_stub_hash_entry *stub_entry; | |
3797 | ||
6f20ed8a AM |
3798 | group = htab->sec_info[section->id].u.group; |
3799 | link_sec = group->link_sec; | |
3800 | stub_sec = group->stub_sec; | |
721956f4 AM |
3801 | if (stub_sec == NULL) |
3802 | { | |
6f20ed8a AM |
3803 | size_t namelen; |
3804 | bfd_size_type len; | |
3805 | char *s_name; | |
721956f4 | 3806 | |
6f20ed8a AM |
3807 | namelen = strlen (link_sec->name); |
3808 | len = namelen + sizeof (STUB_SUFFIX); | |
3809 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3810 | if (s_name == NULL) | |
3811 | return NULL; | |
721956f4 | 3812 | |
6f20ed8a AM |
3813 | memcpy (s_name, link_sec->name, namelen); |
3814 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3815 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3816 | if (stub_sec == NULL) | |
3817 | return NULL; | |
3818 | group->stub_sec = stub_sec; | |
721956f4 AM |
3819 | } |
3820 | ||
3821 | /* Enter this entry into the linker stub hash table. */ | |
3822 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
0a1b45a2 | 3823 | true, false); |
721956f4 AM |
3824 | if (stub_entry == NULL) |
3825 | { | |
695344c0 | 3826 | /* xgettext:c-format */ |
cf97bcb0 AM |
3827 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3828 | section->owner, stub_name); | |
721956f4 AM |
3829 | return NULL; |
3830 | } | |
3831 | ||
6f20ed8a | 3832 | stub_entry->group = group; |
721956f4 | 3833 | stub_entry->stub_offset = 0; |
721956f4 AM |
3834 | return stub_entry; |
3835 | } | |
3836 | ||
e717da7e AM |
3837 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3838 | not already done. */ | |
65f38f15 | 3839 | |
0a1b45a2 | 3840 | static bool |
e717da7e | 3841 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3842 | { |
e717da7e AM |
3843 | asection *got, *relgot; |
3844 | flagword flags; | |
3845 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3846 | |
0c8d6e5c | 3847 | if (!is_ppc64_elf (abfd)) |
0a1b45a2 | 3848 | return false; |
4dfe6ac6 | 3849 | if (htab == NULL) |
0a1b45a2 | 3850 | return false; |
0ffa91dd | 3851 | |
33e44f2e AM |
3852 | if (!htab->elf.sgot |
3853 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
0a1b45a2 | 3854 | return false; |
e717da7e AM |
3855 | |
3856 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3857 | | SEC_LINKER_CREATED); | |
3858 | ||
c456f082 | 3859 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3860 | if (!got |
fd361982 | 3861 | || !bfd_set_section_alignment (got, 3)) |
0a1b45a2 | 3862 | return false; |
65f38f15 | 3863 | |
c456f082 AM |
3864 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3865 | flags | SEC_READONLY); | |
e717da7e | 3866 | if (!relgot |
fd361982 | 3867 | || !bfd_set_section_alignment (relgot, 3)) |
0a1b45a2 | 3868 | return false; |
e717da7e AM |
3869 | |
3870 | ppc64_elf_tdata (abfd)->got = got; | |
3871 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
0a1b45a2 | 3872 | return true; |
65f38f15 | 3873 | } |
5bd4f169 | 3874 | |
b31867b6 AM |
3875 | /* Follow indirect and warning symbol links. */ |
3876 | ||
3877 | static inline struct bfd_link_hash_entry * | |
3878 | follow_link (struct bfd_link_hash_entry *h) | |
3879 | { | |
3880 | while (h->type == bfd_link_hash_indirect | |
3881 | || h->type == bfd_link_hash_warning) | |
3882 | h = h->u.i.link; | |
3883 | return h; | |
3884 | } | |
3885 | ||
3886 | static inline struct elf_link_hash_entry * | |
3887 | elf_follow_link (struct elf_link_hash_entry *h) | |
3888 | { | |
3889 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3890 | } | |
3891 | ||
3892 | static inline struct ppc_link_hash_entry * | |
3893 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3894 | { | |
ed7007c1 | 3895 | return ppc_elf_hash_entry (elf_follow_link (&h->elf)); |
b31867b6 AM |
3896 | } |
3897 | ||
40d16e0b AM |
3898 | /* Merge PLT info on FROM with that on TO. */ |
3899 | ||
3900 | static void | |
3901 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3902 | struct ppc_link_hash_entry *to) | |
3903 | { | |
3904 | if (from->elf.plt.plist != NULL) | |
3905 | { | |
3906 | if (to->elf.plt.plist != NULL) | |
3907 | { | |
3908 | struct plt_entry **entp; | |
3909 | struct plt_entry *ent; | |
3910 | ||
3911 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3912 | { | |
3913 | struct plt_entry *dent; | |
3914 | ||
3915 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3916 | if (dent->addend == ent->addend) | |
3917 | { | |
3918 | dent->plt.refcount += ent->plt.refcount; | |
3919 | *entp = ent->next; | |
3920 | break; | |
3921 | } | |
3922 | if (dent == NULL) | |
3923 | entp = &ent->next; | |
3924 | } | |
3925 | *entp = to->elf.plt.plist; | |
3926 | } | |
3927 | ||
3928 | to->elf.plt.plist = from->elf.plt.plist; | |
3929 | from->elf.plt.plist = NULL; | |
3930 | } | |
3931 | } | |
3932 | ||
65f38f15 AM |
3933 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3934 | ||
3935 | static void | |
fcfa13d2 AM |
3936 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3937 | struct elf_link_hash_entry *dir, | |
3938 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3939 | { |
3940 | struct ppc_link_hash_entry *edir, *eind; | |
3941 | ||
ed7007c1 AM |
3942 | edir = ppc_elf_hash_entry (dir); |
3943 | eind = ppc_elf_hash_entry (ind); | |
65f38f15 | 3944 | |
c79d6685 AM |
3945 | edir->is_func |= eind->is_func; |
3946 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3947 | edir->tls_mask |= eind->tls_mask; | |
3948 | if (eind->oh != NULL) | |
3949 | edir->oh = ppc_follow_link (eind->oh); | |
3950 | ||
474436e6 | 3951 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3952 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3953 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3954 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3955 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3956 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3957 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3958 | |
d311bc8b AM |
3959 | /* If we were called to copy over info for a weak sym, don't copy |
3960 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3961 | in order to simplify readonly_dynrelocs and save a field in the | |
3962 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3963 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3964 | are then tested. */ |
d311bc8b | 3965 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3966 | return; |
d311bc8b | 3967 | |
411e1bfb | 3968 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
190eb1dd | 3969 | if (ind->dyn_relocs != NULL) |
65f38f15 | 3970 | { |
190eb1dd | 3971 | if (dir->dyn_relocs != NULL) |
bbd7ec4a | 3972 | { |
6061a67d AM |
3973 | struct elf_dyn_relocs **pp; |
3974 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3975 | |
fcfa13d2 | 3976 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a | 3977 | list. Merge any entries against the same section. */ |
190eb1dd | 3978 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
bbd7ec4a | 3979 | { |
6061a67d | 3980 | struct elf_dyn_relocs *q; |
bbd7ec4a | 3981 | |
190eb1dd | 3982 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
bbd7ec4a AM |
3983 | if (q->sec == p->sec) |
3984 | { | |
3985 | q->pc_count += p->pc_count; | |
3986 | q->count += p->count; | |
3987 | *pp = p->next; | |
3988 | break; | |
3989 | } | |
3990 | if (q == NULL) | |
3991 | pp = &p->next; | |
3992 | } | |
190eb1dd | 3993 | *pp = dir->dyn_relocs; |
bbd7ec4a AM |
3994 | } |
3995 | ||
190eb1dd L |
3996 | dir->dyn_relocs = ind->dyn_relocs; |
3997 | ind->dyn_relocs = NULL; | |
65f38f15 | 3998 | } |
65f38f15 | 3999 | |
81848ca0 AM |
4000 | /* Copy over got entries that we may have already seen to the |
4001 | symbol which just became indirect. */ | |
411e1bfb AM |
4002 | if (eind->elf.got.glist != NULL) |
4003 | { | |
4004 | if (edir->elf.got.glist != NULL) | |
4005 | { | |
4006 | struct got_entry **entp; | |
4007 | struct got_entry *ent; | |
4008 | ||
4009 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4010 | { | |
4011 | struct got_entry *dent; | |
4012 | ||
4013 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4014 | if (dent->addend == ent->addend | |
e717da7e | 4015 | && dent->owner == ent->owner |
411e1bfb AM |
4016 | && dent->tls_type == ent->tls_type) |
4017 | { | |
4018 | dent->got.refcount += ent->got.refcount; | |
4019 | *entp = ent->next; | |
4020 | break; | |
4021 | } | |
4022 | if (dent == NULL) | |
4023 | entp = &ent->next; | |
4024 | } | |
4025 | *entp = edir->elf.got.glist; | |
4026 | } | |
4027 | ||
4028 | edir->elf.got.glist = eind->elf.got.glist; | |
4029 | eind->elf.got.glist = NULL; | |
4030 | } | |
4031 | ||
4032 | /* And plt entries. */ | |
40d16e0b | 4033 | move_plt_plist (eind, edir); |
411e1bfb | 4034 | |
fcfa13d2 | 4035 | if (eind->elf.dynindx != -1) |
411e1bfb | 4036 | { |
fcfa13d2 AM |
4037 | if (edir->elf.dynindx != -1) |
4038 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4039 | edir->elf.dynstr_index); | |
411e1bfb AM |
4040 | edir->elf.dynindx = eind->elf.dynindx; |
4041 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4042 | eind->elf.dynindx = -1; | |
4043 | eind->elf.dynstr_index = 0; | |
4044 | } | |
411e1bfb AM |
4045 | } |
4046 | ||
8387904d AM |
4047 | /* Find the function descriptor hash entry from the given function code |
4048 | hash entry FH. Link the entries via their OH fields. */ | |
4049 | ||
4050 | static struct ppc_link_hash_entry * | |
b31867b6 | 4051 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4052 | { |
4053 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4054 | ||
4055 | if (fdh == NULL) | |
4056 | { | |
4057 | const char *fd_name = fh->elf.root.root.string + 1; | |
4058 | ||
ed7007c1 | 4059 | fdh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, fd_name, |
0a1b45a2 | 4060 | false, false, false)); |
b31867b6 AM |
4061 | if (fdh == NULL) |
4062 | return fdh; | |
4063 | ||
4064 | fdh->is_func_descriptor = 1; | |
4065 | fdh->oh = fh; | |
4066 | fh->is_func = 1; | |
4067 | fh->oh = fdh; | |
8387904d AM |
4068 | } |
4069 | ||
8c5b4e52 AM |
4070 | fdh = ppc_follow_link (fdh); |
4071 | fdh->is_func_descriptor = 1; | |
4072 | fdh->oh = fh; | |
4073 | return fdh; | |
8387904d AM |
4074 | } |
4075 | ||
8c5b4e52 | 4076 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4077 | |
4078 | static struct ppc_link_hash_entry * | |
4079 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4080 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4081 | { |
8c5b4e52 AM |
4082 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4083 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4084 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4085 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4086 | ? BSF_WEAK | |
4087 | : BSF_GLOBAL); | |
4088 | ||
4089 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4090 | fh->elf.root.root.string + 1, | |
4091 | flags, bfd_und_section_ptr, 0, | |
0a1b45a2 | 4092 | NULL, false, false, &bh)) |
bb700d78 AM |
4093 | return NULL; |
4094 | ||
4095 | fdh = (struct ppc_link_hash_entry *) bh; | |
4096 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4097 | fdh->fake = 1; |
4098 | fdh->is_func_descriptor = 1; | |
4099 | fdh->oh = fh; | |
4100 | fh->is_func = 1; | |
4101 | fh->oh = fdh; | |
bb700d78 AM |
4102 | return fdh; |
4103 | } | |
4104 | ||
8387904d AM |
4105 | /* Fix function descriptor symbols defined in .opd sections to be |
4106 | function type. */ | |
555cd476 | 4107 | |
0a1b45a2 | 4108 | static bool |
c16153ae | 4109 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4110 | struct bfd_link_info *info, |
555cd476 | 4111 | Elf_Internal_Sym *isym, |
6911b7dc | 4112 | const char **name, |
555cd476 AM |
4113 | flagword *flags ATTRIBUTE_UNUSED, |
4114 | asection **sec, | |
b53dfeb2 | 4115 | bfd_vma *value) |
555cd476 | 4116 | { |
b53dfeb2 | 4117 | if (*sec != NULL |
f1885d1e | 4118 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4119 | { |
4120 | asection *code_sec; | |
4121 | ||
4122 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4123 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4124 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4125 | ||
4126 | /* If the symbol is a function defined in .opd, and the function | |
4127 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4128 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4129 | && (*sec)->reloc_count != 0 |
4130 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
0a1b45a2 | 4131 | false) != (bfd_vma) -1 |
b53dfeb2 AM |
4132 | && discarded_section (code_sec)) |
4133 | { | |
4134 | *sec = bfd_und_section_ptr; | |
4135 | isym->st_shndx = SHN_UNDEF; | |
4136 | } | |
4137 | } | |
dbd1e97e AM |
4138 | else if (*sec != NULL |
4139 | && strcmp ((*sec)->name, ".toc") == 0 | |
4140 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4141 | { | |
4142 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4143 | if (htab != NULL) | |
4144 | htab->params->object_in_toc = 1; | |
4145 | } | |
433817dd | 4146 | |
6911b7dc AM |
4147 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4148 | { | |
4149 | if (abiversion (ibfd) == 0) | |
4150 | set_abiversion (ibfd, 2); | |
4151 | else if (abiversion (ibfd) == 1) | |
4152 | { | |
cf97bcb0 AM |
4153 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4154 | " for ABI version 1"), *name); | |
6911b7dc | 4155 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 4156 | return false; |
6911b7dc AM |
4157 | } |
4158 | } | |
4159 | ||
0a1b45a2 | 4160 | return true; |
555cd476 AM |
4161 | } |
4162 | ||
6911b7dc AM |
4163 | /* Merge non-visibility st_other attributes: local entry point. */ |
4164 | ||
4165 | static void | |
4166 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5160d0f3 | 4167 | unsigned int st_other, |
0a1b45a2 AM |
4168 | bool definition, |
4169 | bool dynamic) | |
6911b7dc | 4170 | { |
f378ab09 | 4171 | if (definition && (!dynamic || !h->def_regular)) |
5160d0f3 | 4172 | h->other = ((st_other & ~ELF_ST_VISIBILITY (-1)) |
6911b7dc AM |
4173 | | ELF_ST_VISIBILITY (h->other)); |
4174 | } | |
4175 | ||
8c5b4e52 AM |
4176 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4177 | we now have a real symbol. */ | |
4178 | ||
0a1b45a2 | 4179 | static bool |
8c5b4e52 | 4180 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, |
8b5f1ed8 | 4181 | const Elf_Internal_Sym *isym, |
8c5b4e52 | 4182 | asection **psec ATTRIBUTE_UNUSED, |
0a1b45a2 AM |
4183 | bool newdef ATTRIBUTE_UNUSED, |
4184 | bool olddef ATTRIBUTE_UNUSED, | |
8c5b4e52 AM |
4185 | bfd *oldbfd ATTRIBUTE_UNUSED, |
4186 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4187 | { | |
ed7007c1 | 4188 | ppc_elf_hash_entry (h)->fake = 0; |
8b5f1ed8 | 4189 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
ed7007c1 | 4190 | ppc_elf_hash_entry (h)->non_zero_localentry = 1; |
0a1b45a2 | 4191 | return true; |
8c5b4e52 AM |
4192 | } |
4193 | ||
8387904d | 4194 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4195 | inclusion of a new ABI object archive that defines "bar". |
4196 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4197 | table that might be satisfied by the archive symbols. */ | |
8387904d | 4198 | |
b585e899 | 4199 | static struct bfd_link_hash_entry * |
8387904d AM |
4200 | ppc64_elf_archive_symbol_lookup (bfd *abfd, |
4201 | struct bfd_link_info *info, | |
4202 | const char *name) | |
4203 | { | |
b585e899 | 4204 | struct bfd_link_hash_entry *h; |
8387904d AM |
4205 | char *dot_name; |
4206 | size_t len; | |
4207 | ||
4208 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc | 4209 | if (h != NULL |
b585e899 | 4210 | && ppc_hash_table (info) != NULL |
908b32fc AM |
4211 | /* Don't return this sym if it is a fake function descriptor |
4212 | created by add_symbol_adjust. */ | |
b585e899 | 4213 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
4214 | return h; |
4215 | ||
4216 | if (name[0] == '.') | |
4217 | return h; | |
4218 | ||
4219 | len = strlen (name); | |
4220 | dot_name = bfd_alloc (abfd, len + 2); | |
4221 | if (dot_name == NULL) | |
b585e899 | 4222 | return (struct bfd_link_hash_entry *) -1; |
8387904d AM |
4223 | dot_name[0] = '.'; |
4224 | memcpy (dot_name + 1, name, len + 1); | |
4225 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4226 | bfd_release (abfd, dot_name); | |
a804e476 AM |
4227 | if (h != NULL) |
4228 | return h; | |
4229 | ||
4230 | if (strcmp (name, "__tls_get_addr_opt") == 0) | |
4231 | h = _bfd_elf_archive_symbol_lookup (abfd, info, "__tls_get_addr_desc"); | |
8387904d AM |
4232 | return h; |
4233 | } | |
4234 | ||
4235 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4236 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4237 | are made weak. This stops later archive searches from including an | |
4238 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4239 | prevents the linker complaining about undefined symbols. |
4240 | We also check and correct mismatched symbol visibility here. The | |
4241 | most restrictive visibility of the function descriptor and the | |
4242 | function entry symbol is used. */ | |
8387904d | 4243 | |
0a1b45a2 | 4244 | static bool |
b3fac117 | 4245 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4246 | { |
8387904d AM |
4247 | struct ppc_link_hash_table *htab; |
4248 | struct ppc_link_hash_entry *fdh; | |
4249 | ||
b3fac117 AM |
4250 | if (eh->elf.root.type == bfd_link_hash_warning) |
4251 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4252 | |
8400d40d | 4253 | if (eh->elf.root.type == bfd_link_hash_indirect) |
0a1b45a2 | 4254 | return true; |
8400d40d | 4255 | |
b3fac117 AM |
4256 | if (eh->elf.root.root.string[0] != '.') |
4257 | abort (); | |
8387904d | 4258 | |
b3fac117 | 4259 | htab = ppc_hash_table (info); |
4dfe6ac6 | 4260 | if (htab == NULL) |
0a1b45a2 | 4261 | return false; |
4dfe6ac6 | 4262 | |
b31867b6 | 4263 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4264 | if (fdh == NULL |
4265 | && !bfd_link_relocatable (info) | |
4266 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4267 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4268 | && eh->elf.ref_regular) | |
4269 | { | |
4270 | /* Make an undefined function descriptor sym, in order to | |
4271 | pull in an --as-needed shared lib. Archives are handled | |
4272 | elsewhere. */ | |
4273 | fdh = make_fdh (info, eh); | |
4274 | if (fdh == NULL) | |
0a1b45a2 | 4275 | return false; |
bb700d78 | 4276 | } |
8c5b4e52 AM |
4277 | |
4278 | if (fdh != NULL) | |
8387904d | 4279 | { |
35b0ce59 AM |
4280 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4281 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4282 | |
4283 | /* Make both descriptor and entry symbol have the most | |
4284 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4285 | if (entry_vis < descr_vis) |
4286 | fdh->elf.other += entry_vis - descr_vis; | |
4287 | else if (entry_vis > descr_vis) | |
4288 | eh->elf.other += descr_vis - entry_vis; | |
4289 | ||
8c5b4e52 AM |
4290 | /* Propagate reference flags from entry symbol to function |
4291 | descriptor symbol. */ | |
bc4e12de | 4292 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4293 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4294 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4295 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4296 | ||
4297 | if (!fdh->elf.forced_local | |
4298 | && fdh->elf.dynindx == -1 | |
4299 | && fdh->elf.versioned != versioned_hidden | |
4300 | && (bfd_link_dll (info) | |
4301 | || fdh->elf.def_dynamic | |
4302 | || fdh->elf.ref_dynamic) | |
4303 | && (eh->elf.ref_regular | |
4304 | || eh->elf.def_regular)) | |
4305 | { | |
2cdcc330 | 4306 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
0a1b45a2 | 4307 | return false; |
35b0ce59 | 4308 | } |
8387904d | 4309 | } |
99877b66 | 4310 | |
0a1b45a2 | 4311 | return true; |
8387904d AM |
4312 | } |
4313 | ||
f6c7c3e8 AM |
4314 | /* Set up opd section info and abiversion for IBFD, and process list |
4315 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4316 | |
0a1b45a2 | 4317 | static bool |
f6c7c3e8 | 4318 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4319 | { |
99877b66 | 4320 | struct ppc_link_hash_table *htab; |
b3fac117 | 4321 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4322 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4323 | |
459609d6 | 4324 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4325 | { |
b9399fcf AM |
4326 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4327 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4328 | ||
459609d6 AM |
4329 | if (abiversion (ibfd) == 0) |
4330 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4331 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4332 | { |
695344c0 | 4333 | /* xgettext:c-format */ |
cf97bcb0 AM |
4334 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4335 | ibfd, abiversion (ibfd)); | |
459609d6 | 4336 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 4337 | return false; |
f6c7c3e8 | 4338 | } |
b9399fcf | 4339 | } |
f6c7c3e8 | 4340 | |
b9399fcf AM |
4341 | if (is_ppc64_elf (info->output_bfd)) |
4342 | { | |
4343 | /* For input files without an explicit abiversion in e_flags | |
4344 | we should have flagged any with symbol st_other bits set | |
4345 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4346 | Set the output abiversion if not yet set, and for any input | |
4347 | still ambiguous, take its abiversion from the output. | |
4348 | Differences in ABI are reported later. */ | |
4349 | if (abiversion (info->output_bfd) == 0) | |
4350 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4351 | else if (abiversion (ibfd) == 0) | |
4352 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4353 | } |
4354 | ||
459609d6 AM |
4355 | htab = ppc_hash_table (info); |
4356 | if (htab == NULL) | |
0a1b45a2 | 4357 | return true; |
459609d6 | 4358 | |
b9399fcf AM |
4359 | if (opd != NULL && opd->size != 0 |
4360 | && (ibfd->flags & DYNAMIC) == 0 | |
4361 | && (opd->flags & SEC_RELOC) != 0 | |
4362 | && opd->reloc_count != 0 | |
4363 | && !bfd_is_abs_section (opd->output_section) | |
4364 | && info->gc_sections) | |
4365 | { | |
4366 | /* Garbage collection needs some extra help with .opd sections. | |
4367 | We don't want to necessarily keep everything referenced by | |
4368 | relocs in .opd, as that would keep all functions. Instead, | |
4369 | if we reference an .opd symbol (a function descriptor), we | |
4370 | want to keep the function code symbol's section. This is | |
4371 | easy for global symbols, but for local syms we need to keep | |
4372 | information about the associated function section. */ | |
4373 | bfd_size_type amt; | |
4374 | asection **opd_sym_map; | |
4375 | Elf_Internal_Shdr *symtab_hdr; | |
4376 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4377 | ||
4378 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4379 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4380 | if (opd_sym_map == NULL) | |
0a1b45a2 | 4381 | return false; |
b9399fcf AM |
4382 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
4383 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4384 | info->keep_memory); | |
4385 | if (relocs == NULL) | |
0a1b45a2 | 4386 | return false; |
b9399fcf AM |
4387 | symtab_hdr = &elf_symtab_hdr (ibfd); |
4388 | rel_end = relocs + opd->reloc_count - 1; | |
4389 | for (rel = relocs; rel < rel_end; rel++) | |
4390 | { | |
4391 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4392 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4393 | ||
4394 | if (r_type == R_PPC64_ADDR64 | |
4395 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4396 | && r_symndx < symtab_hdr->sh_info) | |
4397 | { | |
4398 | Elf_Internal_Sym *isym; | |
4399 | asection *s; | |
4400 | ||
f1dfbfdb L |
4401 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, |
4402 | r_symndx); | |
b9399fcf AM |
4403 | if (isym == NULL) |
4404 | { | |
4405 | if (elf_section_data (opd)->relocs != relocs) | |
4406 | free (relocs); | |
0a1b45a2 | 4407 | return false; |
b9399fcf AM |
4408 | } |
4409 | ||
4410 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4411 | if (s != NULL && s != opd) | |
4412 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4413 | } | |
4414 | } | |
4415 | if (elf_section_data (opd)->relocs != relocs) | |
4416 | free (relocs); | |
4417 | } | |
459609d6 AM |
4418 | |
4419 | p = &htab->dot_syms; | |
4420 | while ((eh = *p) != NULL) | |
4421 | { | |
4422 | *p = NULL; | |
4423 | if (&eh->elf == htab->elf.hgot) | |
4424 | ; | |
4425 | else if (htab->elf.hgot == NULL | |
4426 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4427 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4428 | else if (abiversion (ibfd) <= 1) |
4429 | { | |
4430 | htab->need_func_desc_adj = 1; | |
4431 | if (!add_symbol_adjust (eh, info)) | |
0a1b45a2 | 4432 | return false; |
8c5b4e52 | 4433 | } |
459609d6 AM |
4434 | p = &eh->u.next_dot_sym; |
4435 | } | |
0a1b45a2 | 4436 | return true; |
8387904d AM |
4437 | } |
4438 | ||
97fed1c9 JJ |
4439 | /* Undo hash table changes when an --as-needed input file is determined |
4440 | not to be needed. */ | |
4441 | ||
0a1b45a2 | 4442 | static bool |
e5034e59 AM |
4443 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4444 | struct bfd_link_info *info, | |
4445 | enum notice_asneeded_action act) | |
97fed1c9 | 4446 | { |
e5034e59 AM |
4447 | if (act == notice_not_needed) |
4448 | { | |
4449 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4450 | |
e5034e59 | 4451 | if (htab == NULL) |
0a1b45a2 | 4452 | return false; |
4dfe6ac6 | 4453 | |
e5034e59 AM |
4454 | htab->dot_syms = NULL; |
4455 | } | |
4456 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4457 | } |
4458 | ||
aa374f67 AM |
4459 | /* If --just-symbols against a final linked binary, then assume we need |
4460 | toc adjusting stubs when calling functions defined there. */ | |
4461 | ||
4462 | static void | |
4463 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4464 | { | |
4465 | if ((sec->flags & SEC_CODE) != 0 | |
4466 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4467 | && is_ppc64_elf (sec->owner)) | |
4468 | { | |
2c3f079f AM |
4469 | if (abiversion (sec->owner) >= 2 |
4470 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4471 | sec->has_toc_reloc = 1; |
4472 | } | |
4473 | _bfd_elf_link_just_syms (sec, info); | |
4474 | } | |
4475 | ||
e054468f | 4476 | static struct plt_entry ** |
4ce794b7 AM |
4477 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4478 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4479 | { |
4480 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4481 | struct plt_entry **local_plt; |
f961d9dd | 4482 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4483 | |
4484 | if (local_got_ents == NULL) | |
4485 | { | |
4486 | bfd_size_type size = symtab_hdr->sh_info; | |
4487 | ||
e054468f AM |
4488 | size *= (sizeof (*local_got_ents) |
4489 | + sizeof (*local_plt) | |
4490 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4491 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4492 | if (local_got_ents == NULL) |
e054468f | 4493 | return NULL; |
411e1bfb AM |
4494 | elf_local_got_ents (abfd) = local_got_ents; |
4495 | } | |
4496 | ||
37da22e5 | 4497 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4498 | { |
4499 | struct got_entry *ent; | |
4500 | ||
4501 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4502 | if (ent->addend == r_addend |
4503 | && ent->owner == abfd | |
4504 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4505 | break; |
4506 | if (ent == NULL) | |
4507 | { | |
986f0783 | 4508 | size_t amt = sizeof (*ent); |
4ce794b7 | 4509 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4510 | if (ent == NULL) |
0a1b45a2 | 4511 | return false; |
411e1bfb AM |
4512 | ent->next = local_got_ents[r_symndx]; |
4513 | ent->addend = r_addend; | |
e717da7e | 4514 | ent->owner = abfd; |
411e1bfb | 4515 | ent->tls_type = tls_type; |
0a1b45a2 | 4516 | ent->is_indirect = false; |
411e1bfb AM |
4517 | ent->got.refcount = 0; |
4518 | local_got_ents[r_symndx] = ent; | |
4519 | } | |
4520 | ent->got.refcount += 1; | |
4521 | } | |
4522 | ||
e054468f | 4523 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4524 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4525 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4526 | |
4527 | return local_plt + r_symndx; | |
65f38f15 AM |
4528 | } |
4529 | ||
0a1b45a2 | 4530 | static bool |
e054468f | 4531 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4532 | { |
411e1bfb | 4533 | struct plt_entry *ent; |
1e2f5b6e | 4534 | |
e054468f | 4535 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4536 | if (ent->addend == addend) |
4537 | break; | |
4538 | if (ent == NULL) | |
1e2f5b6e | 4539 | { |
986f0783 | 4540 | size_t amt = sizeof (*ent); |
4ce794b7 | 4541 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4542 | if (ent == NULL) |
0a1b45a2 | 4543 | return false; |
e054468f | 4544 | ent->next = *plist; |
411e1bfb AM |
4545 | ent->addend = addend; |
4546 | ent->plt.refcount = 0; | |
e054468f | 4547 | *plist = ent; |
1e2f5b6e | 4548 | } |
411e1bfb | 4549 | ent->plt.refcount += 1; |
0a1b45a2 | 4550 | return true; |
1e2f5b6e AM |
4551 | } |
4552 | ||
0a1b45a2 | 4553 | static bool |
e054468f AM |
4554 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) |
4555 | { | |
4556 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4557 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4558 | || r_type == R_PPC64_REL14 |
4559 | || r_type == R_PPC64_REL14_BRTAKEN | |
4560 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4561 | || r_type == R_PPC64_ADDR24 | |
4562 | || r_type == R_PPC64_ADDR14 | |
4563 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4564 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4565 | || r_type == R_PPC64_PLTCALL |
4566 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4567 | } |
4568 | ||
4569 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4570 | ||
0a1b45a2 | 4571 | static bool |
23cedd1d AM |
4572 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) |
4573 | { | |
4574 | return (r_type == R_PPC64_PLT16_HA | |
4575 | || r_type == R_PPC64_PLT16_HI | |
4576 | || r_type == R_PPC64_PLT16_LO | |
4577 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4578 | || r_type == R_PPC64_PLT_PCREL34 |
4579 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4580 | || r_type == R_PPC64_PLTSEQ | |
4581 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4582 | } |
4583 | ||
5bd4f169 | 4584 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4585 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4586 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4587 | |
0a1b45a2 | 4588 | static bool |
4ce794b7 AM |
4589 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4590 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4591 | { |
65f38f15 | 4592 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4593 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4594 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4595 | const Elf_Internal_Rela *rel; |
4596 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4597 | asection *sreloc; |
3a71aa26 | 4598 | struct elf_link_hash_entry *tga, *dottga; |
0a1b45a2 | 4599 | bool is_opd; |
5bd4f169 | 4600 | |
0e1862bb | 4601 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 4602 | return true; |
5bd4f169 | 4603 | |
0c8d6e5c | 4604 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4605 | |
65f38f15 | 4606 | htab = ppc_hash_table (info); |
4dfe6ac6 | 4607 | if (htab == NULL) |
0a1b45a2 | 4608 | return false; |
4dfe6ac6 | 4609 | |
3a71aa26 | 4610 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
0a1b45a2 | 4611 | false, false, true); |
3a71aa26 | 4612 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
0a1b45a2 | 4613 | false, false, true); |
0ffa91dd | 4614 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4615 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4616 | sreloc = NULL; |
b9399fcf | 4617 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4618 | rel_end = relocs + sec->reloc_count; |
4619 | for (rel = relocs; rel < rel_end; rel++) | |
4620 | { | |
4621 | unsigned long r_symndx; | |
4622 | struct elf_link_hash_entry *h; | |
04c9666a | 4623 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4624 | int tls_type; |
7c8fe5c4 | 4625 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4626 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4627 | |
4628 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4629 | if (r_symndx < symtab_hdr->sh_info) | |
4630 | h = NULL; | |
4631 | else | |
973a3492 L |
4632 | { |
4633 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4634 | h = elf_follow_link (h); |
1c865ab2 AM |
4635 | |
4636 | if (h == htab->elf.hgot) | |
4637 | sec->has_toc_reloc = 1; | |
973a3492 | 4638 | } |
5bd4f169 | 4639 | |
5663e321 AM |
4640 | r_type = ELF64_R_TYPE (rel->r_info); |
4641 | switch (r_type) | |
4642 | { | |
04bdff6a AM |
4643 | case R_PPC64_D34: |
4644 | case R_PPC64_D34_LO: | |
4645 | case R_PPC64_D34_HI30: | |
4646 | case R_PPC64_D34_HA30: | |
4647 | case R_PPC64_D28: | |
c213164a AM |
4648 | case R_PPC64_TPREL34: |
4649 | case R_PPC64_DTPREL34: | |
04bdff6a | 4650 | case R_PPC64_PCREL34: |
5663e321 | 4651 | case R_PPC64_GOT_PCREL34: |
87c69f97 AM |
4652 | case R_PPC64_GOT_TLSGD_PCREL34: |
4653 | case R_PPC64_GOT_TLSLD_PCREL34: | |
4654 | case R_PPC64_GOT_TPREL_PCREL34: | |
4655 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
4656 | case R_PPC64_PLT_PCREL34: |
4657 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a | 4658 | case R_PPC64_PCREL28: |
e10a07b3 | 4659 | htab->has_power10_relocs = 1; |
133a1f60 AM |
4660 | break; |
4661 | default: | |
5663e321 AM |
4662 | break; |
4663 | } | |
903b777d AM |
4664 | |
4665 | switch (r_type) | |
4666 | { | |
4667 | case R_PPC64_PLT16_HA: | |
4668 | case R_PPC64_GOT_TLSLD16_HA: | |
4669 | case R_PPC64_GOT_TLSGD16_HA: | |
4670 | case R_PPC64_GOT_TPREL16_HA: | |
4671 | case R_PPC64_GOT_DTPREL16_HA: | |
4672 | case R_PPC64_GOT16_HA: | |
4673 | case R_PPC64_TOC16_HA: | |
4674 | case R_PPC64_PLT16_LO: | |
4675 | case R_PPC64_PLT16_LO_DS: | |
4676 | case R_PPC64_GOT_TLSLD16_LO: | |
4677 | case R_PPC64_GOT_TLSGD16_LO: | |
4678 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4679 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4680 | case R_PPC64_GOT16_LO: | |
4681 | case R_PPC64_GOT16_LO_DS: | |
4682 | case R_PPC64_TOC16_LO: | |
4683 | case R_PPC64_TOC16_LO_DS: | |
4684 | case R_PPC64_GOT_PCREL34: | |
4685 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4686 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4687 | break; | |
4688 | default: | |
4689 | break; | |
4690 | } | |
4691 | ||
f749f26e | 4692 | ifunc = NULL; |
25f23106 AM |
4693 | if (h != NULL) |
4694 | { | |
4695 | if (h->type == STT_GNU_IFUNC) | |
4696 | { | |
4697 | h->needs_plt = 1; | |
4698 | ifunc = &h->plt.plist; | |
4699 | } | |
4700 | } | |
4701 | else | |
4702 | { | |
f1dfbfdb | 4703 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
25f23106 AM |
4704 | abfd, r_symndx); |
4705 | if (isym == NULL) | |
0a1b45a2 | 4706 | return false; |
25f23106 AM |
4707 | |
4708 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4709 | { | |
4710 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4711 | rel->r_addend, |
37da22e5 | 4712 | NON_GOT | PLT_IFUNC); |
25f23106 | 4713 | if (ifunc == NULL) |
0a1b45a2 | 4714 | return false; |
25f23106 AM |
4715 | } |
4716 | } | |
727fc41e | 4717 | |
f749f26e | 4718 | tls_type = 0; |
a33d1f77 | 4719 | switch (r_type) |
5bd4f169 | 4720 | { |
727fc41e AM |
4721 | case R_PPC64_TLSGD: |
4722 | case R_PPC64_TLSLD: | |
4723 | /* These special tls relocs tie a call to __tls_get_addr with | |
4724 | its parameter symbol. */ | |
37da22e5 | 4725 | if (h != NULL) |
ed7007c1 | 4726 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; |
37da22e5 AM |
4727 | else |
4728 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4729 | rel->r_addend, |
37da22e5 | 4730 | NON_GOT | TLS_TLS | TLS_MARK)) |
0a1b45a2 | 4731 | return false; |
37da22e5 | 4732 | sec->has_tls_reloc = 1; |
727fc41e AM |
4733 | break; |
4734 | ||
411e1bfb AM |
4735 | case R_PPC64_GOT_TLSLD16: |
4736 | case R_PPC64_GOT_TLSLD16_LO: | |
4737 | case R_PPC64_GOT_TLSLD16_HI: | |
4738 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 4739 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 4740 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4741 | goto dogottls; |
4742 | ||
4743 | case R_PPC64_GOT_TLSGD16: | |
4744 | case R_PPC64_GOT_TLSGD16_LO: | |
4745 | case R_PPC64_GOT_TLSGD16_HI: | |
4746 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 4747 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 4748 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4749 | goto dogottls; |
4750 | ||
4751 | case R_PPC64_GOT_TPREL16_DS: | |
4752 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4753 | case R_PPC64_GOT_TPREL16_HI: | |
4754 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 4755 | case R_PPC64_GOT_TPREL_PCREL34: |
7c8bbca5 | 4756 | if (bfd_link_dll (info)) |
411e1bfb AM |
4757 | info->flags |= DF_STATIC_TLS; |
4758 | tls_type = TLS_TLS | TLS_TPREL; | |
4759 | goto dogottls; | |
4760 | ||
4761 | case R_PPC64_GOT_DTPREL16_DS: | |
4762 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4763 | case R_PPC64_GOT_DTPREL16_HI: | |
4764 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 4765 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
4766 | tls_type = TLS_TLS | TLS_DTPREL; |
4767 | dogottls: | |
4768 | sec->has_tls_reloc = 1; | |
066f4018 | 4769 | goto dogot; |
411e1bfb | 4770 | |
903b777d AM |
4771 | case R_PPC64_GOT16: |
4772 | case R_PPC64_GOT16_LO: | |
4773 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4774 | case R_PPC64_GOT16_HA: |
903b777d | 4775 | case R_PPC64_GOT16_DS: |
066f4018 | 4776 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4777 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4778 | dogot: |
65f38f15 | 4779 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4780 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4781 | if (r_type == R_PPC64_GOT_TLSLD16 |
4782 | || r_type == R_PPC64_GOT_TLSGD16 | |
4783 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4784 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4785 | || r_type == R_PPC64_GOT16 | |
4786 | || r_type == R_PPC64_GOT16_DS) | |
4787 | { | |
4788 | htab->do_multi_toc = 1; | |
d77c8a4b | 4789 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4790 | } |
4791 | ||
e717da7e AM |
4792 | if (ppc64_elf_tdata (abfd)->got == NULL |
4793 | && !create_got_section (abfd, info)) | |
0a1b45a2 | 4794 | return false; |
5bd4f169 AM |
4795 | |
4796 | if (h != NULL) | |
4797 | { | |
411e1bfb AM |
4798 | struct ppc_link_hash_entry *eh; |
4799 | struct got_entry *ent; | |
65f38f15 | 4800 | |
ed7007c1 | 4801 | eh = ppc_elf_hash_entry (h); |
411e1bfb | 4802 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) |
133a1f60 | 4803 | if (ent->addend == rel->r_addend |
e717da7e | 4804 | && ent->owner == abfd |
411e1bfb AM |
4805 | && ent->tls_type == tls_type) |
4806 | break; | |
4807 | if (ent == NULL) | |
5bd4f169 | 4808 | { |
986f0783 | 4809 | size_t amt = sizeof (*ent); |
4ce794b7 | 4810 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4811 | if (ent == NULL) |
0a1b45a2 | 4812 | return false; |
411e1bfb | 4813 | ent->next = eh->elf.got.glist; |
133a1f60 | 4814 | ent->addend = rel->r_addend; |
e717da7e | 4815 | ent->owner = abfd; |
411e1bfb | 4816 | ent->tls_type = tls_type; |
0a1b45a2 | 4817 | ent->is_indirect = false; |
411e1bfb AM |
4818 | ent->got.refcount = 0; |
4819 | eh->elf.got.glist = ent; | |
5bd4f169 | 4820 | } |
411e1bfb | 4821 | ent->got.refcount += 1; |
e7b938ca | 4822 | eh->tls_mask |= tls_type; |
5bd4f169 | 4823 | } |
411e1bfb AM |
4824 | else |
4825 | /* This is a global offset table entry for a local symbol. */ | |
4826 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4827 | rel->r_addend, tls_type)) |
0a1b45a2 | 4828 | return false; |
5bd4f169 AM |
4829 | break; |
4830 | ||
5bd4f169 | 4831 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4832 | case R_PPC64_PLT16_HI: |
4833 | case R_PPC64_PLT16_LO: | |
08be3224 | 4834 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4835 | case R_PPC64_PLT_PCREL34: |
4836 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4837 | case R_PPC64_PLT32: |
4838 | case R_PPC64_PLT64: | |
cbf95972 AM |
4839 | /* This symbol requires a procedure linkage table entry. */ |
4840 | plt_list = ifunc; | |
4841 | if (h != NULL) | |
e054468f | 4842 | { |
e054468f AM |
4843 | h->needs_plt = 1; |
4844 | if (h->root.root.string[0] == '.' | |
4845 | && h->root.root.string[1] != '\0') | |
ed7007c1 AM |
4846 | ppc_elf_hash_entry (h)->is_func = 1; |
4847 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
cbf95972 AM |
4848 | plt_list = &h->plt.plist; |
4849 | } | |
4850 | if (plt_list == NULL) | |
2d7ad24e | 4851 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 4852 | rel->r_addend, |
2d7ad24e | 4853 | NON_GOT | PLT_KEEP); |
133a1f60 | 4854 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
0a1b45a2 | 4855 | return false; |
5bd4f169 AM |
4856 | break; |
4857 | ||
4858 | /* The following relocations don't need to propagate the | |
4859 | relocation if linking a shared object since they are | |
4860 | section relative. */ | |
4861 | case R_PPC64_SECTOFF: | |
4862 | case R_PPC64_SECTOFF_LO: | |
4863 | case R_PPC64_SECTOFF_HI: | |
4864 | case R_PPC64_SECTOFF_HA: | |
4865 | case R_PPC64_SECTOFF_DS: | |
4866 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4867 | case R_PPC64_DTPREL16: |
4868 | case R_PPC64_DTPREL16_LO: | |
4869 | case R_PPC64_DTPREL16_HI: | |
4870 | case R_PPC64_DTPREL16_HA: | |
4871 | case R_PPC64_DTPREL16_DS: | |
4872 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4873 | case R_PPC64_DTPREL16_HIGH: |
4874 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4875 | case R_PPC64_DTPREL16_HIGHER: |
4876 | case R_PPC64_DTPREL16_HIGHERA: | |
4877 | case R_PPC64_DTPREL16_HIGHEST: | |
4878 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4879 | break; |
4880 | ||
ad8e1ba5 | 4881 | /* Nor do these. */ |
25f23106 AM |
4882 | case R_PPC64_REL16: |
4883 | case R_PPC64_REL16_LO: | |
4884 | case R_PPC64_REL16_HI: | |
4885 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4886 | case R_PPC64_REL16_HIGH: |
4887 | case R_PPC64_REL16_HIGHA: | |
4888 | case R_PPC64_REL16_HIGHER: | |
4889 | case R_PPC64_REL16_HIGHERA: | |
4890 | case R_PPC64_REL16_HIGHEST: | |
4891 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4892 | case R_PPC64_REL16_HIGHER34: |
4893 | case R_PPC64_REL16_HIGHERA34: | |
4894 | case R_PPC64_REL16_HIGHEST34: | |
4895 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4896 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4897 | break; |
4898 | ||
45965137 AM |
4899 | /* Not supported as a dynamic relocation. */ |
4900 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4901 | if (bfd_link_pic (info)) |
45965137 AM |
4902 | { |
4903 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4904 | ppc_howto_init (); | |
695344c0 | 4905 | /* xgettext:c-format */ |
174d0a74 | 4906 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4907 | "in shared libraries and PIEs\n"), |
45965137 AM |
4908 | abfd, sec, rel->r_offset, |
4909 | ppc64_elf_howto_table[r_type]->name); | |
4910 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 4911 | return false; |
45965137 AM |
4912 | } |
4913 | break; | |
4914 | ||
ad8e1ba5 | 4915 | case R_PPC64_TOC16: |
33c0ec9d AM |
4916 | case R_PPC64_TOC16_DS: |
4917 | htab->do_multi_toc = 1; | |
d77c8a4b | 4918 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4919 | /* Fall through. */ |
ad8e1ba5 AM |
4920 | case R_PPC64_TOC16_LO: |
4921 | case R_PPC64_TOC16_HI: | |
4922 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4923 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4924 | sec->has_toc_reloc = 1; |
ec73ddcd | 4925 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
4926 | { |
4927 | /* We may need a copy reloc. */ | |
4928 | h->non_got_ref = 1; | |
4929 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
4930 | glibc ld.so as of 2019-08 will error out if one of | |
4931 | these relocations is emitted. */ | |
4932 | h->needs_copy = 1; | |
4933 | goto dodyn; | |
4934 | } | |
ad8e1ba5 AM |
4935 | break; |
4936 | ||
006589cf AM |
4937 | /* Marker reloc. */ |
4938 | case R_PPC64_ENTRY: | |
4939 | break; | |
4940 | ||
5bd4f169 AM |
4941 | /* This relocation describes the C++ object vtable hierarchy. |
4942 | Reconstruct it for later use during GC. */ | |
4943 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4944 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
0a1b45a2 | 4945 | return false; |
5bd4f169 AM |
4946 | break; |
4947 | ||
4948 | /* This relocation describes which C++ vtable entries are actually | |
4949 | used. Record for later use during GC. */ | |
4950 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4951 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
0a1b45a2 | 4952 | return false; |
5bd4f169 AM |
4953 | break; |
4954 | ||
721956f4 AM |
4955 | case R_PPC64_REL14: |
4956 | case R_PPC64_REL14_BRTAKEN: | |
4957 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4958 | { |
4959 | asection *dest = NULL; | |
4960 | ||
4961 | /* Heuristic: If jumping outside our section, chances are | |
4962 | we are going to need a stub. */ | |
4963 | if (h != NULL) | |
4964 | { | |
4965 | /* If the sym is weak it may be overridden later, so | |
4966 | don't assume we know where a weak sym lives. */ | |
4967 | if (h->root.type == bfd_link_hash_defined) | |
4968 | dest = h->root.u.def.section; | |
4969 | } | |
4970 | else | |
87d72d41 AM |
4971 | { |
4972 | Elf_Internal_Sym *isym; | |
4973 | ||
f1dfbfdb | 4974 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
4975 | abfd, r_symndx); |
4976 | if (isym == NULL) | |
0a1b45a2 | 4977 | return false; |
87d72d41 AM |
4978 | |
4979 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4980 | } | |
4981 | ||
220c76dd | 4982 | if (dest != sec) |
7c8fe5c4 | 4983 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4984 | } |
3e04d765 AM |
4985 | goto rel24; |
4986 | ||
4987 | case R_PPC64_PLTCALL: | |
5663e321 | 4988 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4989 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4990 | /* Fall through. */ |
4991 | ||
5d1634d7 | 4992 | case R_PPC64_REL24: |
05d0e962 | 4993 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4994 | rel24: |
cbf95972 AM |
4995 | plt_list = ifunc; |
4996 | if (h != NULL) | |
5d1634d7 | 4997 | { |
e054468f AM |
4998 | h->needs_plt = 1; |
4999 | if (h->root.root.string[0] == '.' | |
5000 | && h->root.root.string[1] != '\0') | |
ed7007c1 | 5001 | ppc_elf_hash_entry (h)->is_func = 1; |
cbf95972 | 5002 | |
3a71aa26 | 5003 | if (h == tga || h == dottga) |
cbf95972 AM |
5004 | { |
5005 | sec->has_tls_reloc = 1; | |
5006 | if (rel != relocs | |
5007 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5008 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5009 | /* We have a new-style __tls_get_addr call with | |
5010 | a marker reloc. */ | |
5011 | ; | |
5012 | else | |
5013 | /* Mark this section as having an old-style call. */ | |
9737e8af | 5014 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
5015 | } |
5016 | plt_list = &h->plt.plist; | |
411e1bfb | 5017 | } |
cbf95972 AM |
5018 | |
5019 | /* We may need a .plt entry if the function this reloc | |
5020 | refers to is in a shared lib. */ | |
5021 | if (plt_list | |
133a1f60 | 5022 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
0a1b45a2 | 5023 | return false; |
411e1bfb AM |
5024 | break; |
5025 | ||
cbf95972 AM |
5026 | case R_PPC64_ADDR14: |
5027 | case R_PPC64_ADDR14_BRNTAKEN: | |
5028 | case R_PPC64_ADDR14_BRTAKEN: | |
5029 | case R_PPC64_ADDR24: | |
5030 | goto dodyn; | |
5031 | ||
411e1bfb AM |
5032 | case R_PPC64_TPREL64: |
5033 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5034 | if (bfd_link_dll (info)) |
411e1bfb AM |
5035 | info->flags |= DF_STATIC_TLS; |
5036 | goto dotlstoc; | |
5037 | ||
5038 | case R_PPC64_DTPMOD64: | |
5039 | if (rel + 1 < rel_end | |
5040 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5041 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5042 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5043 | else |
951fd09b | 5044 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5045 | goto dotlstoc; |
5046 | ||
5047 | case R_PPC64_DTPREL64: | |
5048 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5049 | if (rel != relocs | |
5050 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5051 | && rel[-1].r_offset == rel->r_offset - 8) | |
5052 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5053 | Don't mark with TLS_DTPREL. */ | |
5054 | goto dodyn; | |
5055 | ||
5056 | dotlstoc: | |
5057 | sec->has_tls_reloc = 1; | |
5058 | if (h != NULL) | |
ed7007c1 | 5059 | ppc_elf_hash_entry (h)->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
5060 | else |
5061 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5062 | rel->r_addend, tls_type)) |
0a1b45a2 | 5063 | return false; |
411e1bfb | 5064 | |
7c8fe5c4 AM |
5065 | ppc64_sec = ppc64_elf_section_data (sec); |
5066 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5067 | { |
3a71aa26 AM |
5068 | bfd_size_type amt; |
5069 | ||
e7b938ca | 5070 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5071 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5072 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5073 | if (ppc64_sec->u.toc.symndx == NULL) | |
0a1b45a2 | 5074 | return false; |
3a71aa26 AM |
5075 | amt = sec->size * sizeof (bfd_vma) / 8; |
5076 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5077 | if (ppc64_sec->u.toc.add == NULL) | |
0a1b45a2 | 5078 | return false; |
7c8fe5c4 AM |
5079 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5080 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5081 | } |
5082 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 5083 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5084 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5085 | |
5086 | /* Mark the second slot of a GD or LD entry. | |
5087 | -1 to indicate GD and -2 to indicate LD. */ | |
5088 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5089 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5090 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5091 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5092 | goto dodyn; |
5093 | ||
411e1bfb AM |
5094 | case R_PPC64_TPREL16_HI: |
5095 | case R_PPC64_TPREL16_HA: | |
f9c6b907 AM |
5096 | case R_PPC64_TPREL16_HIGH: |
5097 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5098 | case R_PPC64_TPREL16_HIGHER: |
5099 | case R_PPC64_TPREL16_HIGHERA: | |
5100 | case R_PPC64_TPREL16_HIGHEST: | |
5101 | case R_PPC64_TPREL16_HIGHESTA: | |
252dcdf4 AM |
5102 | sec->has_tls_reloc = 1; |
5103 | /* Fall through. */ | |
c213164a | 5104 | case R_PPC64_TPREL34: |
252dcdf4 AM |
5105 | case R_PPC64_TPREL16: |
5106 | case R_PPC64_TPREL16_DS: | |
5107 | case R_PPC64_TPREL16_LO: | |
5108 | case R_PPC64_TPREL16_LO_DS: | |
7c8bbca5 AM |
5109 | if (bfd_link_dll (info)) |
5110 | info->flags |= DF_STATIC_TLS; | |
5111 | goto dodyn; | |
5d1634d7 | 5112 | |
e86ce104 | 5113 | case R_PPC64_ADDR64: |
b9399fcf | 5114 | if (is_opd |
1e2f5b6e | 5115 | && rel + 1 < rel_end |
4ce794b7 | 5116 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5117 | { |
8387904d | 5118 | if (h != NULL) |
ed7007c1 | 5119 | ppc_elf_hash_entry (h)->is_func = 1; |
1e2f5b6e | 5120 | } |
e86ce104 AM |
5121 | /* Fall through. */ |
5122 | ||
65f38f15 AM |
5123 | case R_PPC64_ADDR16: |
5124 | case R_PPC64_ADDR16_DS: | |
5125 | case R_PPC64_ADDR16_HA: | |
5126 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5127 | case R_PPC64_ADDR16_HIGH: |
5128 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5129 | case R_PPC64_ADDR16_HIGHER: |
5130 | case R_PPC64_ADDR16_HIGHERA: | |
5131 | case R_PPC64_ADDR16_HIGHEST: | |
5132 | case R_PPC64_ADDR16_HIGHESTA: | |
5133 | case R_PPC64_ADDR16_LO: | |
5134 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5135 | case R_PPC64_D34: |
5136 | case R_PPC64_D34_LO: | |
5137 | case R_PPC64_D34_HI30: | |
5138 | case R_PPC64_D34_HA30: | |
5139 | case R_PPC64_ADDR16_HIGHER34: | |
5140 | case R_PPC64_ADDR16_HIGHERA34: | |
5141 | case R_PPC64_ADDR16_HIGHEST34: | |
5142 | case R_PPC64_ADDR16_HIGHESTA34: | |
5143 | case R_PPC64_D28: | |
0e1862bb | 5144 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5145 | && rel->r_addend == 0) |
5146 | { | |
5147 | /* We may need a .plt entry if this reloc refers to a | |
5148 | function in a shared lib. */ | |
5663e321 | 5149 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
0a1b45a2 | 5150 | return false; |
a345bc8d AM |
5151 | h->pointer_equality_needed = 1; |
5152 | } | |
5153 | /* Fall through. */ | |
5154 | ||
5155 | case R_PPC64_REL30: | |
5156 | case R_PPC64_REL32: | |
5157 | case R_PPC64_REL64: | |
65f38f15 | 5158 | case R_PPC64_ADDR32: |
65f38f15 AM |
5159 | case R_PPC64_UADDR16: |
5160 | case R_PPC64_UADDR32: | |
5161 | case R_PPC64_UADDR64: | |
5bd4f169 | 5162 | case R_PPC64_TOC: |
ec73ddcd | 5163 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5164 | /* We may need a copy reloc. */ |
f5385ebf | 5165 | h->non_got_ref = 1; |
81848ca0 | 5166 | |
41bd81ab | 5167 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5168 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5169 | break; |
e86ce104 | 5170 | |
65f38f15 AM |
5171 | /* If we are creating a shared library, and this is a reloc |
5172 | against a global symbol, or a non PC relative reloc | |
5173 | against a local symbol, then we need to copy the reloc | |
5174 | into the shared library. However, if we are linking with | |
5175 | -Bsymbolic, we do not need to copy a reloc against a | |
5176 | global symbol which is defined in an object we are | |
5177 | including in the link (i.e., DEF_REGULAR is set). At | |
5178 | this point we have not seen all the input files, so it is | |
5179 | possible that DEF_REGULAR is not set now but will be set | |
5180 | later (it is never cleared). In case of a weak definition, | |
5181 | DEF_REGULAR may be cleared later by a strong definition in | |
5182 | a shared library. We account for that possibility below by | |
f4656909 | 5183 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5184 | table entry. A similar situation occurs when creating |
5185 | shared libraries and symbol visibility changes render the | |
5186 | symbol local. | |
5187 | ||
5188 | If on the other hand, we are creating an executable, we | |
5189 | may need to keep relocations for symbols satisfied by a | |
5190 | dynamic library if we manage to avoid copy relocs for the | |
5191 | symbol. */ | |
411e1bfb | 5192 | dodyn: |
ec73ddcd AM |
5193 | if ((h != NULL |
5194 | && (h->root.type == bfd_link_hash_defweak | |
5195 | || !h->def_regular)) | |
5196 | || (h != NULL | |
5197 | && !bfd_link_executable (info) | |
5198 | && !SYMBOLIC_BIND (info, h)) | |
5199 | || (bfd_link_pic (info) | |
5200 | && must_be_dyn_reloc (info, r_type)) | |
0e1862bb | 5201 | || (!bfd_link_pic (info) |
25f23106 | 5202 | && ifunc != NULL)) |
5bd4f169 | 5203 | { |
65f38f15 AM |
5204 | /* We must copy these reloc types into the output file. |
5205 | Create a reloc section in dynobj and make room for | |
5206 | this reloc. */ | |
5bd4f169 AM |
5207 | if (sreloc == NULL) |
5208 | { | |
83bac4b0 | 5209 | sreloc = _bfd_elf_make_dynamic_reloc_section |
0a1b45a2 | 5210 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ true); |
65f38f15 | 5211 | |
5bd4f169 | 5212 | if (sreloc == NULL) |
0a1b45a2 | 5213 | return false; |
5bd4f169 AM |
5214 | } |
5215 | ||
65f38f15 AM |
5216 | /* If this is a global symbol, we count the number of |
5217 | relocations we need for this symbol. */ | |
5218 | if (h != NULL) | |
5219 | { | |
19e08130 AM |
5220 | struct elf_dyn_relocs *p; |
5221 | struct elf_dyn_relocs **head; | |
5222 | ||
190eb1dd | 5223 | head = &h->dyn_relocs; |
19e08130 AM |
5224 | p = *head; |
5225 | if (p == NULL || p->sec != sec) | |
5226 | { | |
5227 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5228 | if (p == NULL) | |
0a1b45a2 | 5229 | return false; |
19e08130 AM |
5230 | p->next = *head; |
5231 | *head = p; | |
5232 | p->sec = sec; | |
5233 | p->count = 0; | |
5234 | p->pc_count = 0; | |
5235 | } | |
5236 | p->count += 1; | |
5237 | if (!must_be_dyn_reloc (info, r_type)) | |
5238 | p->pc_count += 1; | |
65f38f15 AM |
5239 | } |
5240 | else | |
5241 | { | |
ec338859 AM |
5242 | /* Track dynamic relocs needed for local syms too. |
5243 | We really need local syms available to do this | |
5244 | easily. Oh well. */ | |
19e08130 AM |
5245 | struct ppc_dyn_relocs *p; |
5246 | struct ppc_dyn_relocs **head; | |
0a1b45a2 | 5247 | bool is_ifunc; |
ec338859 | 5248 | asection *s; |
6edfbbad | 5249 | void *vpp; |
87d72d41 | 5250 | Elf_Internal_Sym *isym; |
6edfbbad | 5251 | |
f1dfbfdb | 5252 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
5253 | abfd, r_symndx); |
5254 | if (isym == NULL) | |
0a1b45a2 | 5255 | return false; |
ec338859 | 5256 | |
87d72d41 AM |
5257 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5258 | if (s == NULL) | |
5259 | s = sec; | |
5260 | ||
6edfbbad | 5261 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5262 | head = (struct ppc_dyn_relocs **) vpp; |
5263 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5264 | p = *head; | |
5265 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5266 | p = p->next; | |
5267 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5268 | { | |
5269 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5270 | if (p == NULL) | |
0a1b45a2 | 5271 | return false; |
19e08130 AM |
5272 | p->next = *head; |
5273 | *head = p; | |
5274 | p->sec = sec; | |
5275 | p->ifunc = is_ifunc; | |
5276 | p->count = 0; | |
5277 | } | |
5278 | p->count += 1; | |
ec338859 | 5279 | } |
65f38f15 | 5280 | } |
5bd4f169 | 5281 | break; |
65f38f15 AM |
5282 | |
5283 | default: | |
96e0dda4 | 5284 | break; |
5bd4f169 AM |
5285 | } |
5286 | } | |
5287 | ||
0a1b45a2 | 5288 | return true; |
5bd4f169 AM |
5289 | } |
5290 | ||
ee67d69a AM |
5291 | /* Merge backend specific data from an object file to the output |
5292 | object file when linking. */ | |
5293 | ||
0a1b45a2 | 5294 | static bool |
50e03d47 | 5295 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5296 | { |
50e03d47 | 5297 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5298 | unsigned long iflags, oflags; |
5299 | ||
5300 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
0a1b45a2 | 5301 | return true; |
ee67d69a AM |
5302 | |
5303 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
0a1b45a2 | 5304 | return true; |
ee67d69a | 5305 | |
50e03d47 | 5306 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
0a1b45a2 | 5307 | return false; |
ee67d69a AM |
5308 | |
5309 | iflags = elf_elfheader (ibfd)->e_flags; | |
5310 | oflags = elf_elfheader (obfd)->e_flags; | |
5311 | ||
f6c7c3e8 | 5312 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5313 | { |
4eca0228 | 5314 | _bfd_error_handler |
695344c0 | 5315 | /* xgettext:c-format */ |
871b3ab2 | 5316 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a | 5317 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 5318 | return false; |
ee67d69a | 5319 | } |
f6c7c3e8 | 5320 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5321 | { |
4eca0228 | 5322 | _bfd_error_handler |
695344c0 | 5323 | /* xgettext:c-format */ |
871b3ab2 | 5324 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5325 | ibfd, iflags, oflags); |
5326 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 5327 | return false; |
ee67d69a AM |
5328 | } |
5329 | ||
4a91d0ba | 5330 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
0a1b45a2 | 5331 | return false; |
005d79fd | 5332 | |
ee67d69a | 5333 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5334 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5335 | } |
5336 | ||
0a1b45a2 | 5337 | static bool |
ee67d69a AM |
5338 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
5339 | { | |
5340 | /* Print normal ELF private data. */ | |
5341 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5342 | ||
5343 | if (elf_elfheader (abfd)->e_flags != 0) | |
5344 | { | |
5345 | FILE *file = ptr; | |
5346 | ||
ee67d69a AM |
5347 | fprintf (file, _("private flags = 0x%lx:"), |
5348 | elf_elfheader (abfd)->e_flags); | |
5349 | ||
5350 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5351 | fprintf (file, _(" [abiv%ld]"), | |
5352 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5353 | fputc ('\n', file); | |
5354 | } | |
5355 | ||
0a1b45a2 | 5356 | return true; |
ee67d69a AM |
5357 | } |
5358 | ||
8387904d | 5359 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5360 | of the code entry point, and its section, which must be in the same |
5361 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5362 | |
5363 | static bfd_vma | |
5364 | opd_entry_value (asection *opd_sec, | |
5365 | bfd_vma offset, | |
5366 | asection **code_sec, | |
aef36ac1 | 5367 | bfd_vma *code_off, |
0a1b45a2 | 5368 | bool in_code_sec) |
8387904d AM |
5369 | { |
5370 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5371 | Elf_Internal_Rela *relocs; |
8387904d | 5372 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5373 | bfd_vma val; |
8387904d | 5374 | |
9f296da3 AM |
5375 | /* No relocs implies we are linking a --just-symbols object, or looking |
5376 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5377 | if (opd_sec->reloc_count == 0) |
5378 | { | |
729eabd5 | 5379 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5380 | |
729eabd5 AM |
5381 | if (contents == NULL) |
5382 | { | |
5383 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5384 | return (bfd_vma) -1; | |
5385 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5386 | } | |
ee1e4ede | 5387 | |
dbb3fbbb | 5388 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5389 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5390 | return (bfd_vma) -1; |
5391 | ||
729eabd5 | 5392 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5393 | if (code_sec != NULL) |
5394 | { | |
5395 | asection *sec, *likely = NULL; | |
ee1e4ede | 5396 | |
aef36ac1 | 5397 | if (in_code_sec) |
4b85d634 | 5398 | { |
aef36ac1 AM |
5399 | sec = *code_sec; |
5400 | if (sec->vma <= val | |
5401 | && val < sec->vma + sec->size) | |
5402 | likely = sec; | |
5403 | else | |
5404 | val = -1; | |
5405 | } | |
5406 | else | |
5407 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5408 | if (sec->vma <= val | |
5409 | && (sec->flags & SEC_LOAD) != 0 | |
5410 | && (sec->flags & SEC_ALLOC) != 0) | |
5411 | likely = sec; | |
5412 | if (likely != NULL) | |
5413 | { | |
5414 | *code_sec = likely; | |
5415 | if (code_off != NULL) | |
5416 | *code_off = val - likely->vma; | |
4b85d634 AM |
5417 | } |
5418 | } | |
aef36ac1 | 5419 | return val; |
4b85d634 AM |
5420 | } |
5421 | ||
0c8d6e5c | 5422 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5423 | |
729eabd5 | 5424 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f | 5425 | if (relocs == NULL) |
0a1b45a2 | 5426 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, true); |
877a8638 NC |
5427 | /* PR 17512: file: df8e1fd6. */ |
5428 | if (relocs == NULL) | |
5429 | return (bfd_vma) -1; | |
645ea6a9 | 5430 | |
8387904d | 5431 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5432 | lo = relocs; |
8387904d | 5433 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5434 | val = (bfd_vma) -1; |
8387904d AM |
5435 | while (lo < hi) |
5436 | { | |
5437 | look = lo + (hi - lo) / 2; | |
5438 | if (look->r_offset < offset) | |
5439 | lo = look + 1; | |
5440 | else if (look->r_offset > offset) | |
5441 | hi = look; | |
5442 | else | |
5443 | { | |
0ffa91dd NC |
5444 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5445 | ||
8387904d AM |
5446 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5447 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5448 | { | |
5449 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5450 | asection *sec = NULL; |
8387904d | 5451 | |
b53dfeb2 AM |
5452 | if (symndx >= symtab_hdr->sh_info |
5453 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5454 | { |
5455 | struct elf_link_hash_entry **sym_hashes; | |
5456 | struct elf_link_hash_entry *rh; | |
5457 | ||
5458 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5459 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5460 | if (rh != NULL) |
5461 | { | |
5462 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5463 | if (rh->root.type != bfd_link_hash_defined |
5464 | && rh->root.type != bfd_link_hash_defweak) | |
5465 | break; | |
5466 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5467 | { |
bb854a36 AM |
5468 | val = rh->root.u.def.value; |
5469 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5470 | } |
5471 | } | |
5472 | } | |
5473 | ||
5474 | if (sec == NULL) | |
5475 | { | |
5476 | Elf_Internal_Sym *sym; | |
5477 | ||
5478 | if (symndx < symtab_hdr->sh_info) | |
5479 | { | |
5480 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5481 | if (sym == NULL) | |
5482 | { | |
5483 | size_t symcnt = symtab_hdr->sh_info; | |
5484 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5485 | symcnt, 0, | |
5486 | NULL, NULL, NULL); | |
5487 | if (sym == NULL) | |
5488 | break; | |
5489 | symtab_hdr->contents = (bfd_byte *) sym; | |
5490 | } | |
5491 | sym += symndx; | |
128205bb AM |
5492 | } |
5493 | else | |
5494 | { | |
b53dfeb2 AM |
5495 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5496 | 1, symndx, | |
5497 | NULL, NULL, NULL); | |
128205bb AM |
5498 | if (sym == NULL) |
5499 | break; | |
128205bb | 5500 | } |
b53dfeb2 AM |
5501 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5502 | if (sec == NULL) | |
5503 | break; | |
5504 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5505 | val = sym->st_value; | |
8387904d | 5506 | } |
b53dfeb2 | 5507 | |
8387904d AM |
5508 | val += look->r_addend; |
5509 | if (code_off != NULL) | |
5510 | *code_off = val; | |
5511 | if (code_sec != NULL) | |
aef36ac1 AM |
5512 | { |
5513 | if (in_code_sec && *code_sec != sec) | |
5514 | return -1; | |
5515 | else | |
5516 | *code_sec = sec; | |
5517 | } | |
b53dfeb2 | 5518 | if (sec->output_section != NULL) |
8387904d | 5519 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5520 | } |
5521 | break; | |
5522 | } | |
5523 | } | |
645ea6a9 | 5524 | |
645ea6a9 | 5525 | return val; |
8387904d AM |
5526 | } |
5527 | ||
aef36ac1 AM |
5528 | /* If the ELF symbol SYM might be a function in SEC, return the |
5529 | function size and set *CODE_OFF to the function's entry point, | |
5530 | otherwise return zero. */ | |
9f296da3 | 5531 | |
aef36ac1 AM |
5532 | static bfd_size_type |
5533 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5534 | bfd_vma *code_off) | |
9f296da3 | 5535 | { |
aef36ac1 | 5536 | bfd_size_type size; |
24aebc79 | 5537 | elf_symbol_type * elf_sym = (elf_symbol_type *) sym; |
aef36ac1 AM |
5538 | |
5539 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5540 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5541 | return 0; | |
5542 | ||
24aebc79 NC |
5543 | size = (sym->flags & BSF_SYNTHETIC) ? 0 : elf_sym->internal_elf_sym.st_size; |
5544 | ||
5545 | /* In theory we should check that the symbol's type satisfies | |
5546 | _bfd_elf_is_function_type(), but there are some function-like | |
5547 | symbols which would fail this test. (eg _start). Instead | |
5548 | we check for hidden, local, notype symbols with zero size. | |
5549 | This type of symbol is generated by the annobin plugin for gcc | |
5550 | and clang, and should not be considered to be a function symbol. */ | |
5551 | if (size == 0 | |
5552 | && ((sym->flags & (BSF_SYNTHETIC | BSF_LOCAL)) == BSF_LOCAL) | |
5553 | && ELF_ST_TYPE (elf_sym->internal_elf_sym.st_info) == STT_NOTYPE | |
5554 | && ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other) == STV_HIDDEN) | |
5555 | return 0; | |
aef36ac1 AM |
5556 | |
5557 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5558 | { |
b07bca4e AM |
5559 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5560 | bfd_vma symval = sym->value; | |
5561 | ||
5562 | if (opd != NULL | |
5563 | && opd->adjust != NULL | |
5564 | && elf_section_data (sym->section)->relocs != NULL) | |
5565 | { | |
5566 | /* opd_entry_value will use cached relocs that have been | |
5567 | adjusted, but with raw symbols. That means both local | |
5568 | and global symbols need adjusting. */ | |
5569 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5570 | if (adjust == -1) | |
5571 | return 0; | |
5572 | symval += adjust; | |
5573 | } | |
5574 | ||
5575 | if (opd_entry_value (sym->section, symval, | |
0a1b45a2 | 5576 | &sec, code_off, true) == (bfd_vma) -1) |
aef36ac1 AM |
5577 | return 0; |
5578 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5579 | symbol. This size has nothing to do with the code size of the | |
5580 | function, which is what we're supposed to return, but the | |
5581 | code size isn't available without looking up the dot-sym. | |
5582 | However, doing that would be a waste of time particularly | |
5583 | since elf_find_function will look at the dot-sym anyway. | |
5584 | Now, elf_find_function will keep the largest size of any | |
5585 | function sym found at the code address of interest, so return | |
5586 | 1 here to avoid it incorrectly caching a larger function size | |
5587 | for a small function. This does mean we return the wrong | |
5588 | size for a new-ABI function of size 24, but all that does is | |
5589 | disable caching for such functions. */ | |
5590 | if (size == 24) | |
5591 | size = 1; | |
9f296da3 | 5592 | } |
aef36ac1 AM |
5593 | else |
5594 | { | |
5595 | if (sym->section != sec) | |
5596 | return 0; | |
5597 | *code_off = sym->value; | |
5598 | } | |
24aebc79 NC |
5599 | |
5600 | /* Do not return 0 for the function's size. */ | |
5601 | return size ? size : 1; | |
9f296da3 AM |
5602 | } |
5603 | ||
f378ab09 AM |
5604 | /* Return true if symbol is a strong function defined in an ELFv2 |
5605 | object with st_other localentry bits of zero, ie. its local entry | |
5606 | point coincides with its global entry point. */ | |
5607 | ||
0a1b45a2 | 5608 | static bool |
f378ab09 AM |
5609 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) |
5610 | { | |
5611 | return (h != NULL | |
5612 | && h->type == STT_FUNC | |
5613 | && h->root.type == bfd_link_hash_defined | |
5614 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
ed7007c1 | 5615 | && !ppc_elf_hash_entry (h)->non_zero_localentry |
f378ab09 AM |
5616 | && is_ppc64_elf (h->root.u.def.section->owner) |
5617 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5618 | } | |
5619 | ||
854b41e7 AM |
5620 | /* Return true if symbol is defined in a regular object file. */ |
5621 | ||
0a1b45a2 | 5622 | static bool |
854b41e7 AM |
5623 | is_static_defined (struct elf_link_hash_entry *h) |
5624 | { | |
5625 | return ((h->root.type == bfd_link_hash_defined | |
5626 | || h->root.type == bfd_link_hash_defweak) | |
5627 | && h->root.u.def.section != NULL | |
5628 | && h->root.u.def.section->output_section != NULL); | |
5629 | } | |
5630 | ||
b31867b6 AM |
5631 | /* If FDH is a function descriptor symbol, return the associated code |
5632 | entry symbol if it is defined. Return NULL otherwise. */ | |
5633 | ||
5634 | static struct ppc_link_hash_entry * | |
5635 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5636 | { | |
5637 | if (fdh->is_func_descriptor) | |
5638 | { | |
5639 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5640 | if (fh->elf.root.type == bfd_link_hash_defined | |
5641 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5642 | return fh; | |
5643 | } | |
5644 | return NULL; | |
5645 | } | |
5646 | ||
5647 | /* If FH is a function code entry symbol, return the associated | |
5648 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5649 | ||
5650 | static struct ppc_link_hash_entry * | |
5651 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5652 | { | |
5653 | if (fh->oh != NULL | |
5654 | && fh->oh->is_func_descriptor) | |
5655 | { | |
5656 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5657 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5658 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5659 | return fdh; | |
5660 | } | |
5661 | return NULL; | |
5662 | } | |
5663 | ||
ed7007c1 AM |
5664 | /* Given H is a symbol that satisfies is_static_defined, return the |
5665 | value in the output file. */ | |
5666 | ||
5667 | static bfd_vma | |
5668 | defined_sym_val (struct elf_link_hash_entry *h) | |
5669 | { | |
5670 | return (h->root.u.def.section->output_section->vma | |
5671 | + h->root.u.def.section->output_offset | |
5672 | + h->root.u.def.value); | |
5673 | } | |
5674 | ||
5675 | /* Return true if H matches __tls_get_addr or one of its variants. */ | |
5676 | ||
0a1b45a2 | 5677 | static bool |
ed7007c1 AM |
5678 | is_tls_get_addr (struct elf_link_hash_entry *h, |
5679 | struct ppc_link_hash_table *htab) | |
5680 | { | |
30845f11 AM |
5681 | return (h == elf_hash_entry (htab->tls_get_addr_fd) |
5682 | || h == elf_hash_entry (htab->tga_desc_fd) | |
5683 | || h == elf_hash_entry (htab->tls_get_addr) | |
5684 | || h == elf_hash_entry (htab->tga_desc)); | |
ed7007c1 AM |
5685 | } |
5686 | ||
0a1b45a2 | 5687 | static bool func_desc_adjust (struct elf_link_hash_entry *, void *); |
8c5b4e52 AM |
5688 | |
5689 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5690 | ||
0a1b45a2 | 5691 | static bool |
8c5b4e52 AM |
5692 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) |
5693 | { | |
5694 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5695 | ||
5696 | if (htab != NULL && htab->need_func_desc_adj) | |
5697 | { | |
5698 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5699 | htab->need_func_desc_adj = 0; | |
5700 | } | |
5701 | return bfd_elf_gc_sections (abfd, info); | |
5702 | } | |
5703 | ||
74f0fb50 AM |
5704 | /* Mark all our entry sym sections, both opd and code section. */ |
5705 | ||
5706 | static void | |
5707 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5708 | { | |
5709 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5710 | struct bfd_sym_chain *sym; | |
5711 | ||
4dfe6ac6 NC |
5712 | if (htab == NULL) |
5713 | return; | |
5714 | ||
74f0fb50 AM |
5715 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5716 | { | |
b31867b6 | 5717 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5718 | asection *sec; |
5719 | ||
ed7007c1 | 5720 | eh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym->name, |
0a1b45a2 | 5721 | false, false, true)); |
74f0fb50 AM |
5722 | if (eh == NULL) |
5723 | continue; | |
5724 | if (eh->elf.root.type != bfd_link_hash_defined | |
5725 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5726 | continue; | |
5727 | ||
b31867b6 AM |
5728 | fh = defined_code_entry (eh); |
5729 | if (fh != NULL) | |
74f0fb50 | 5730 | { |
b31867b6 | 5731 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5732 | sec->flags |= SEC_KEEP; |
5733 | } | |
5734 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5735 | && opd_entry_value (eh->elf.root.u.def.section, | |
5736 | eh->elf.root.u.def.value, | |
0a1b45a2 | 5737 | &sec, NULL, false) != (bfd_vma) -1) |
74f0fb50 AM |
5738 | sec->flags |= SEC_KEEP; |
5739 | ||
5740 | sec = eh->elf.root.u.def.section; | |
5741 | sec->flags |= SEC_KEEP; | |
5742 | } | |
5743 | } | |
5744 | ||
64d03ab5 AM |
5745 | /* Mark sections containing dynamically referenced symbols. When |
5746 | building shared libraries, we must assume that any visible symbol is | |
5747 | referenced. */ | |
5748 | ||
0a1b45a2 | 5749 | static bool |
64d03ab5 AM |
5750 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) |
5751 | { | |
5752 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
ed7007c1 | 5753 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
b31867b6 | 5754 | struct ppc_link_hash_entry *fdh; |
b407645f | 5755 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5756 | |
64d03ab5 | 5757 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5758 | fdh = defined_func_desc (eh); |
5759 | if (fdh != NULL) | |
5760 | eh = fdh; | |
64d03ab5 AM |
5761 | |
5762 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5763 | || eh->elf.root.type == bfd_link_hash_defweak) | |
b80e421f AM |
5764 | && (!eh->elf.start_stop |
5765 | || eh->elf.root.ldscript_def | |
5766 | || !info->start_stop_gc) | |
87e79a65 | 5767 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5768 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5769 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5770 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5771 | && (!bfd_link_executable (info) |
e278ae05 | 5772 | || info->gc_keep_exported |
b407645f AM |
5773 | || info->export_dynamic |
5774 | || (eh->elf.dynamic | |
5775 | && d != NULL | |
2cdcc330 AM |
5776 | && (*d->match) (&d->head, NULL, |
5777 | eh->elf.root.root.string))) | |
e278ae05 | 5778 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5779 | || !bfd_hide_sym_by_version (info->version_info, |
5780 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5781 | { |
5782 | asection *code_sec; | |
b31867b6 | 5783 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5784 | |
5785 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5786 | ||
5787 | /* Function descriptor syms cause the associated | |
5788 | function code sym section to be marked. */ | |
b31867b6 AM |
5789 | fh = defined_code_entry (eh); |
5790 | if (fh != NULL) | |
5791 | { | |
5792 | code_sec = fh->elf.root.u.def.section; | |
5793 | code_sec->flags |= SEC_KEEP; | |
5794 | } | |
64d03ab5 AM |
5795 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5796 | && opd_entry_value (eh->elf.root.u.def.section, | |
5797 | eh->elf.root.u.def.value, | |
0a1b45a2 | 5798 | &code_sec, NULL, false) != (bfd_vma) -1) |
64d03ab5 AM |
5799 | code_sec->flags |= SEC_KEEP; |
5800 | } | |
5801 | ||
0a1b45a2 | 5802 | return true; |
64d03ab5 AM |
5803 | } |
5804 | ||
5bd4f169 AM |
5805 | /* Return the section that should be marked against GC for a given |
5806 | relocation. */ | |
5807 | ||
5808 | static asection * | |
4ce794b7 | 5809 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5810 | struct bfd_link_info *info, |
4ce794b7 AM |
5811 | Elf_Internal_Rela *rel, |
5812 | struct elf_link_hash_entry *h, | |
5813 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5814 | { |
ccfa59ea AM |
5815 | asection *rsec; |
5816 | ||
ccfa59ea AM |
5817 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5818 | function sections, as all functions are referenced in .opd. */ | |
5819 | rsec = NULL; | |
5820 | if (get_opd_info (sec) != NULL) | |
5821 | return rsec; | |
1e2f5b6e | 5822 | |
5bd4f169 AM |
5823 | if (h != NULL) |
5824 | { | |
04c9666a | 5825 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5826 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5827 | |
4ce794b7 | 5828 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5829 | switch (r_type) |
5bd4f169 AM |
5830 | { |
5831 | case R_PPC64_GNU_VTINHERIT: | |
5832 | case R_PPC64_GNU_VTENTRY: | |
5833 | break; | |
5834 | ||
5835 | default: | |
5836 | switch (h->root.type) | |
5837 | { | |
5838 | case bfd_link_hash_defined: | |
5839 | case bfd_link_hash_defweak: | |
ed7007c1 | 5840 | eh = ppc_elf_hash_entry (h); |
b31867b6 AM |
5841 | fdh = defined_func_desc (eh); |
5842 | if (fdh != NULL) | |
8c5b4e52 AM |
5843 | { |
5844 | /* -mcall-aixdesc code references the dot-symbol on | |
5845 | a call reloc. Mark the function descriptor too | |
5846 | against garbage collection. */ | |
5847 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5848 | if (fdh->elf.is_weakalias) |
5849 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5850 | eh = fdh; |
5851 | } | |
1e2f5b6e AM |
5852 | |
5853 | /* Function descriptor syms cause the associated | |
5854 | function code sym section to be marked. */ | |
b31867b6 AM |
5855 | fh = defined_code_entry (eh); |
5856 | if (fh != NULL) | |
ccfa59ea AM |
5857 | { |
5858 | /* They also mark their opd section. */ | |
74f0fb50 | 5859 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5860 | |
b31867b6 | 5861 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5862 | } |
8387904d AM |
5863 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5864 | && opd_entry_value (eh->elf.root.u.def.section, | |
5865 | eh->elf.root.u.def.value, | |
0a1b45a2 | 5866 | &rsec, NULL, false) != (bfd_vma) -1) |
74f0fb50 | 5867 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5868 | else |
1e2f5b6e AM |
5869 | rsec = h->root.u.def.section; |
5870 | break; | |
5bd4f169 AM |
5871 | |
5872 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5873 | rsec = h->root.u.c.p->section; |
5874 | break; | |
5bd4f169 AM |
5875 | |
5876 | default: | |
fb34365b | 5877 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5878 | } |
5879 | } | |
5880 | } | |
5881 | else | |
5882 | { | |
74f0fb50 | 5883 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5884 | |
5885 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5886 | opd = get_opd_info (rsec); |
5887 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5888 | { |
74f0fb50 | 5889 | rsec->gc_mark = 1; |
ccfa59ea | 5890 | |
51aecdc5 | 5891 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5892 | } |
5bd4f169 AM |
5893 | } |
5894 | ||
1e2f5b6e | 5895 | return rsec; |
5bd4f169 AM |
5896 | } |
5897 | ||
deb0e272 AM |
5898 | /* The maximum size of .sfpr. */ |
5899 | #define SFPR_MAX (218*4) | |
5900 | ||
5901 | struct sfpr_def_parms | |
5902 | { | |
699733f6 AM |
5903 | const char name[12]; |
5904 | unsigned char lo, hi; | |
2cdcc330 AM |
5905 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5906 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5907 | }; |
5908 | ||
a4b6fadd AM |
5909 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5910 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5911 | instead. */ | |
deb0e272 | 5912 | |
0a1b45a2 | 5913 | static bool |
a4b6fadd AM |
5914 | sfpr_define (struct bfd_link_info *info, |
5915 | const struct sfpr_def_parms *parm, | |
5916 | asection *stub_sec) | |
deb0e272 AM |
5917 | { |
5918 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5919 | unsigned int i; | |
5920 | size_t len = strlen (parm->name); | |
0a1b45a2 | 5921 | bool writing = false; |
699733f6 | 5922 | char sym[16]; |
deb0e272 | 5923 | |
4dfe6ac6 | 5924 | if (htab == NULL) |
0a1b45a2 | 5925 | return false; |
4dfe6ac6 | 5926 | |
deb0e272 AM |
5927 | memcpy (sym, parm->name, len); |
5928 | sym[len + 2] = 0; | |
5929 | ||
5930 | for (i = parm->lo; i <= parm->hi; i++) | |
5931 | { | |
a4b6fadd | 5932 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5933 | |
5934 | sym[len + 0] = i / 10 + '0'; | |
5935 | sym[len + 1] = i % 10 + '0'; | |
ed7007c1 | 5936 | h = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym, |
0a1b45a2 | 5937 | writing, true, true)); |
a4b6fadd | 5938 | if (stub_sec != NULL) |
deb0e272 | 5939 | { |
a4b6fadd AM |
5940 | if (h != NULL |
5941 | && h->elf.root.type == bfd_link_hash_defined | |
5942 | && h->elf.root.u.def.section == htab->sfpr) | |
5943 | { | |
5944 | struct elf_link_hash_entry *s; | |
5945 | char buf[32]; | |
5946 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
0a1b45a2 | 5947 | s = elf_link_hash_lookup (&htab->elf, buf, true, true, false); |
a4b6fadd | 5948 | if (s == NULL) |
0a1b45a2 | 5949 | return false; |
779f2ae7 | 5950 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
5951 | { |
5952 | s->root.type = bfd_link_hash_defined; | |
5953 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5954 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5955 | + h->elf.root.u.def.value); |
5956 | s->ref_regular = 1; | |
5957 | s->def_regular = 1; | |
5958 | s->ref_regular_nonweak = 1; | |
5959 | s->forced_local = 1; | |
5960 | s->non_elf = 0; | |
5961 | s->root.linker_def = 1; | |
5962 | } | |
5963 | } | |
5964 | continue; | |
5965 | } | |
5966 | if (h != NULL) | |
5967 | { | |
5968 | h->save_res = 1; | |
5969 | if (!h->elf.def_regular) | |
deb0e272 | 5970 | { |
a4b6fadd AM |
5971 | h->elf.root.type = bfd_link_hash_defined; |
5972 | h->elf.root.u.def.section = htab->sfpr; | |
5973 | h->elf.root.u.def.value = htab->sfpr->size; | |
5974 | h->elf.type = STT_FUNC; | |
5975 | h->elf.def_regular = 1; | |
b32547cd | 5976 | h->elf.non_elf = 0; |
0a1b45a2 AM |
5977 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, true); |
5978 | writing = true; | |
deb0e272 | 5979 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5980 | { |
2cdcc330 AM |
5981 | htab->sfpr->contents |
5982 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd | 5983 | if (htab->sfpr->contents == NULL) |
0a1b45a2 | 5984 | return false; |
a4b6fadd | 5985 | } |
deb0e272 AM |
5986 | } |
5987 | } | |
5988 | if (writing) | |
5989 | { | |
5990 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5991 | if (i != parm->hi) | |
5992 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5993 | else | |
5994 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5995 | htab->sfpr->size = p - htab->sfpr->contents; | |
5996 | } | |
5997 | } | |
5998 | ||
0a1b45a2 | 5999 | return true; |
deb0e272 AM |
6000 | } |
6001 | ||
6002 | static bfd_byte * | |
6003 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6004 | { | |
6005 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6006 | return p + 4; | |
6007 | } | |
6008 | ||
6009 | static bfd_byte * | |
6010 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6011 | { | |
6012 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6013 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6014 | p = p + 4; |
6015 | bfd_put_32 (abfd, BLR, p); | |
6016 | return p + 4; | |
6017 | } | |
6018 | ||
6019 | static bfd_byte * | |
6020 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6021 | { | |
6022 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6023 | return p + 4; | |
6024 | } | |
6025 | ||
6026 | static bfd_byte * | |
6027 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6028 | { | |
a078d95a | 6029 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6030 | p = p + 4; |
6031 | p = restgpr0 (abfd, p, r); | |
6032 | bfd_put_32 (abfd, MTLR_R0, p); | |
6033 | p = p + 4; | |
6034 | if (r == 29) | |
6035 | { | |
6036 | p = restgpr0 (abfd, p, 30); | |
6037 | p = restgpr0 (abfd, p, 31); | |
6038 | } | |
6039 | bfd_put_32 (abfd, BLR, p); | |
6040 | return p + 4; | |
6041 | } | |
6042 | ||
6043 | static bfd_byte * | |
6044 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6045 | { | |
6046 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6047 | return p + 4; | |
6048 | } | |
6049 | ||
6050 | static bfd_byte * | |
6051 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6052 | { | |
6053 | p = savegpr1 (abfd, p, r); | |
6054 | bfd_put_32 (abfd, BLR, p); | |
6055 | return p + 4; | |
6056 | } | |
6057 | ||
6058 | static bfd_byte * | |
6059 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6060 | { | |
6061 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6062 | return p + 4; | |
6063 | } | |
6064 | ||
6065 | static bfd_byte * | |
6066 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6067 | { | |
6068 | p = restgpr1 (abfd, p, r); | |
6069 | bfd_put_32 (abfd, BLR, p); | |
6070 | return p + 4; | |
6071 | } | |
6072 | ||
6073 | static bfd_byte * | |
6074 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6075 | { | |
6076 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6077 | return p + 4; | |
6078 | } | |
6079 | ||
6080 | static bfd_byte * | |
6081 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6082 | { | |
6083 | p = savefpr (abfd, p, r); | |
a078d95a | 6084 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6085 | p = p + 4; |
6086 | bfd_put_32 (abfd, BLR, p); | |
6087 | return p + 4; | |
6088 | } | |
6089 | ||
6090 | static bfd_byte * | |
6091 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6092 | { | |
6093 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6094 | return p + 4; | |
6095 | } | |
6096 | ||
6097 | static bfd_byte * | |
6098 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6099 | { | |
a078d95a | 6100 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6101 | p = p + 4; |
6102 | p = restfpr (abfd, p, r); | |
6103 | bfd_put_32 (abfd, MTLR_R0, p); | |
6104 | p = p + 4; | |
6105 | if (r == 29) | |
6106 | { | |
6107 | p = restfpr (abfd, p, 30); | |
6108 | p = restfpr (abfd, p, 31); | |
6109 | } | |
6110 | bfd_put_32 (abfd, BLR, p); | |
6111 | return p + 4; | |
6112 | } | |
6113 | ||
6114 | static bfd_byte * | |
6115 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6116 | { | |
6117 | p = savefpr (abfd, p, r); | |
6118 | bfd_put_32 (abfd, BLR, p); | |
6119 | return p + 4; | |
6120 | } | |
6121 | ||
6122 | static bfd_byte * | |
6123 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6124 | { | |
6125 | p = restfpr (abfd, p, r); | |
6126 | bfd_put_32 (abfd, BLR, p); | |
6127 | return p + 4; | |
6128 | } | |
6129 | ||
6130 | static bfd_byte * | |
6131 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6132 | { | |
6133 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6134 | p = p + 4; | |
6135 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6136 | return p + 4; | |
6137 | } | |
6138 | ||
6139 | static bfd_byte * | |
6140 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6141 | { | |
6142 | p = savevr (abfd, p, r); | |
6143 | bfd_put_32 (abfd, BLR, p); | |
6144 | return p + 4; | |
6145 | } | |
6146 | ||
6147 | static bfd_byte * | |
6148 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6149 | { | |
6150 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6151 | p = p + 4; | |
6152 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6153 | return p + 4; | |
6154 | } | |
6155 | ||
6156 | static bfd_byte * | |
6157 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6158 | { | |
6159 | p = restvr (abfd, p, r); | |
6160 | bfd_put_32 (abfd, BLR, p); | |
6161 | return p + 4; | |
6162 | } | |
6163 | ||
9e7028aa AM |
6164 | #define STDU_R1_0R1 0xf8210001 |
6165 | #define ADDI_R1_R1 0x38210000 | |
6166 | ||
6167 | /* Emit prologue of wrapper preserving regs around a call to | |
6168 | __tls_get_addr_opt. */ | |
6169 | ||
6170 | static bfd_byte * | |
6171 | tls_get_addr_prologue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6172 | { | |
6173 | unsigned int i; | |
6174 | ||
6175 | bfd_put_32 (obfd, MFLR_R0, p); | |
6176 | p += 4; | |
6177 | bfd_put_32 (obfd, STD_R0_0R1 + 16, p); | |
6178 | p += 4; | |
6179 | ||
6180 | if (htab->opd_abi) | |
6181 | { | |
6182 | for (i = 4; i < 12; i++) | |
6183 | { | |
6184 | bfd_put_32 (obfd, | |
6185 | STD_R0_0R1 | i << 21 | (-(13 - i) * 8 & 0xffff), p); | |
6186 | p += 4; | |
6187 | } | |
6188 | bfd_put_32 (obfd, STDU_R1_0R1 | (-128 & 0xffff), p); | |
6189 | p += 4; | |
6190 | } | |
6191 | else | |
6192 | { | |
6193 | for (i = 4; i < 12; i++) | |
6194 | { | |
6195 | bfd_put_32 (obfd, | |
6196 | STD_R0_0R1 | i << 21 | (-(12 - i) * 8 & 0xffff), p); | |
6197 | p += 4; | |
6198 | } | |
6199 | bfd_put_32 (obfd, STDU_R1_0R1 | (-96 & 0xffff), p); | |
6200 | p += 4; | |
6201 | } | |
6202 | return p; | |
6203 | } | |
6204 | ||
6205 | /* Emit epilogue of wrapper preserving regs around a call to | |
6206 | __tls_get_addr_opt. */ | |
6207 | ||
6208 | static bfd_byte * | |
6209 | tls_get_addr_epilogue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6210 | { | |
6211 | unsigned int i; | |
6212 | ||
6213 | if (htab->opd_abi) | |
6214 | { | |
6215 | for (i = 4; i < 12; i++) | |
6216 | { | |
6217 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (128 - (13 - i) * 8), p); | |
6218 | p += 4; | |
6219 | } | |
6220 | bfd_put_32 (obfd, ADDI_R1_R1 | 128, p); | |
6221 | p += 4; | |
6222 | } | |
6223 | else | |
6224 | { | |
6225 | for (i = 4; i < 12; i++) | |
6226 | { | |
6227 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (96 - (12 - i) * 8), p); | |
6228 | p += 4; | |
6229 | } | |
6230 | bfd_put_32 (obfd, ADDI_R1_R1 | 96, p); | |
6231 | p += 4; | |
6232 | } | |
6233 | bfd_put_32 (obfd, LD_R0_0R1 | 16, p); | |
6234 | p += 4; | |
6235 | bfd_put_32 (obfd, MTLR_R0, p); | |
6236 | p += 4; | |
6237 | bfd_put_32 (obfd, BLR, p); | |
6238 | p += 4; | |
6239 | return p; | |
6240 | } | |
6241 | ||
e86ce104 AM |
6242 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6243 | information on function code symbol entries to their corresponding | |
6244 | function descriptor symbol entries. */ | |
deb0e272 | 6245 | |
0a1b45a2 | 6246 | static bool |
4ce794b7 | 6247 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6248 | { |
e86ce104 | 6249 | struct bfd_link_info *info; |
65f38f15 | 6250 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6251 | struct ppc_link_hash_entry *fh; |
6252 | struct ppc_link_hash_entry *fdh; | |
0a1b45a2 | 6253 | bool force_local; |
5bd4f169 | 6254 | |
ed7007c1 | 6255 | fh = ppc_elf_hash_entry (h); |
50bc7936 | 6256 | if (fh->elf.root.type == bfd_link_hash_indirect) |
0a1b45a2 | 6257 | return true; |
e86ce104 | 6258 | |
8c5b4e52 | 6259 | if (!fh->is_func) |
0a1b45a2 | 6260 | return true; |
8c5b4e52 AM |
6261 | |
6262 | if (fh->elf.root.root.string[0] != '.' | |
6263 | || fh->elf.root.root.string[1] == '\0') | |
0a1b45a2 | 6264 | return true; |
8c5b4e52 | 6265 | |
4ce794b7 | 6266 | info = inf; |
65f38f15 | 6267 | htab = ppc_hash_table (info); |
4dfe6ac6 | 6268 | if (htab == NULL) |
0a1b45a2 | 6269 | return false; |
5bd4f169 | 6270 | |
8c5b4e52 AM |
6271 | /* Find the corresponding function descriptor symbol. */ |
6272 | fdh = lookup_fdh (fh, htab); | |
6273 | ||
c09bdfe5 AM |
6274 | /* Resolve undefined references to dot-symbols as the value |
6275 | in the function descriptor, if we have one in a regular object. | |
6276 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6277 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6278 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6279 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6280 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6281 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6282 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6283 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6284 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6285 | &fh->elf.root.u.def.section, |
0a1b45a2 | 6286 | &fh->elf.root.u.def.value, false) != (bfd_vma) -1) |
c09bdfe5 | 6287 | { |
b31867b6 | 6288 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6289 | fh->elf.forced_local = 1; |
b31867b6 AM |
6290 | fh->elf.def_regular = fdh->elf.def_regular; |
6291 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6292 | } |
6293 | ||
8c5b4e52 AM |
6294 | if (!fh->elf.dynamic) |
6295 | { | |
6296 | struct plt_entry *ent; | |
5bd4f169 | 6297 | |
8c5b4e52 AM |
6298 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6299 | if (ent->plt.refcount > 0) | |
6300 | break; | |
6301 | if (ent == NULL) | |
0a1b45a2 | 6302 | return true; |
8c5b4e52 | 6303 | } |
5bd4f169 | 6304 | |
8c5b4e52 | 6305 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6306 | if (fdh == NULL |
0e1862bb | 6307 | && !bfd_link_executable (info) |
50bc7936 AM |
6308 | && (fh->elf.root.type == bfd_link_hash_undefined |
6309 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6310 | { | |
908b32fc | 6311 | fdh = make_fdh (info, fh); |
bb700d78 | 6312 | if (fdh == NULL) |
0a1b45a2 | 6313 | return false; |
50bc7936 | 6314 | } |
648cca2c | 6315 | |
8c5b4e52 | 6316 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6317 | if (fdh != NULL |
6318 | && fdh->fake | |
8c5b4e52 AM |
6319 | && (fh->elf.root.type == bfd_link_hash_defined |
6320 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
0a1b45a2 | 6321 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, true); |
908b32fc | 6322 | |
8c5b4e52 AM |
6323 | /* Transfer dynamic linking information to the function descriptor. */ |
6324 | if (fdh != NULL) | |
6325 | { | |
f5385ebf AM |
6326 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6327 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6328 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6329 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6330 | fdh->elf.dynamic |= fh->elf.dynamic; |
6331 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6332 | || fh->elf.type == STT_FUNC | |
6333 | || fh->elf.type == STT_GNU_IFUNC); | |
6334 | move_plt_plist (fh, fdh); | |
6335 | ||
6336 | if (!fdh->elf.forced_local | |
6337 | && fh->elf.dynindx != -1) | |
6338 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
0a1b45a2 | 6339 | return false; |
e86ce104 AM |
6340 | } |
6341 | ||
50bc7936 AM |
6342 | /* Now that the info is on the function descriptor, clear the |
6343 | function code sym info. Any function code syms for which we | |
6344 | don't have a definition in a regular file, we force local. | |
6345 | This prevents a shared library from exporting syms that have | |
6346 | been imported from another library. Function code syms that | |
6347 | are really in the library we must leave global to prevent the | |
6348 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6349 | force_local = (!fh->elf.def_regular |
6350 | || fdh == NULL | |
6351 | || !fdh->elf.def_regular | |
6352 | || fdh->elf.forced_local); | |
50bc7936 AM |
6353 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6354 | ||
0a1b45a2 | 6355 | return true; |
e86ce104 | 6356 | } |
40b8271b | 6357 | |
a4b6fadd AM |
6358 | static const struct sfpr_def_parms save_res_funcs[] = |
6359 | { | |
6360 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6361 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6362 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6363 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6364 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6365 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6366 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6367 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6368 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6369 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6370 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6371 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6372 | }; | |
6373 | ||
e86ce104 | 6374 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
c9405344 AM |
6375 | this hook to a) run the edit functions in this file, b) provide |
6376 | some gcc support functions, and c) transfer dynamic linking | |
6377 | information gathered so far on function code symbol entries, to | |
6378 | their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6379 | |
0a1b45a2 | 6380 | static bool |
c9405344 | 6381 | ppc64_elf_edit (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
e86ce104 AM |
6382 | { |
6383 | struct ppc_link_hash_table *htab; | |
6384 | ||
6385 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 6386 | if (htab == NULL) |
0a1b45a2 | 6387 | return false; |
4dfe6ac6 | 6388 | |
c9405344 AM |
6389 | /* Call back into the linker, which then runs the edit functions. */ |
6390 | htab->params->edit (); | |
6391 | ||
b32547cd AM |
6392 | /* Provide any missing _save* and _rest* functions. */ |
6393 | if (htab->sfpr != NULL) | |
6394 | { | |
6395 | unsigned int i; | |
6396 | ||
6397 | htab->sfpr->size = 0; | |
6398 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6399 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
0a1b45a2 | 6400 | return false; |
b32547cd AM |
6401 | if (htab->sfpr->size == 0) |
6402 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6403 | } | |
6404 | ||
6405 | if (bfd_link_relocatable (info)) | |
0a1b45a2 | 6406 | return true; |
b32547cd AM |
6407 | |
6408 | if (htab->elf.hgot != NULL) | |
dba6fa9b | 6409 | { |
0a1b45a2 | 6410 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, true); |
dba6fa9b AM |
6411 | /* Make .TOC. defined so as to prevent it being made dynamic. |
6412 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6413 | if (!htab->elf.hgot->def_regular |
6414 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6415 | { | |
6416 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6417 | htab->elf.hgot->root.u.def.value = 0; | |
6418 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6419 | htab->elf.hgot->def_regular = 1; | |
6420 | htab->elf.hgot->root.linker_def = 1; | |
6421 | } | |
dba6fa9b | 6422 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6423 | htab->elf.hgot->other |
6424 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6425 | } |
c66bb0ee | 6426 | |
8c5b4e52 AM |
6427 | if (htab->need_func_desc_adj) |
6428 | { | |
6429 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6430 | htab->need_func_desc_adj = 0; | |
6431 | } | |
805fc799 | 6432 | |
0a1b45a2 | 6433 | return true; |
e86ce104 AM |
6434 | } |
6435 | ||
d311bc8b | 6436 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6437 | aliases, that apply to read-only sections. Cannot be used after |
6438 | size_dynamic_sections. */ | |
d311bc8b | 6439 | |
0a1b45a2 | 6440 | static bool |
d311bc8b AM |
6441 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) |
6442 | { | |
ed7007c1 | 6443 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
d311bc8b AM |
6444 | do |
6445 | { | |
5dbc8b37 | 6446 | if (_bfd_elf_readonly_dynrelocs (&eh->elf)) |
0a1b45a2 | 6447 | return true; |
ed7007c1 | 6448 | eh = ppc_elf_hash_entry (eh->elf.u.alias); |
2cdcc330 AM |
6449 | } |
6450 | while (eh != NULL && &eh->elf != h); | |
d311bc8b | 6451 | |
0a1b45a2 | 6452 | return false; |
d311bc8b | 6453 | } |
8a2058b5 | 6454 | |
8a9e8e72 AM |
6455 | /* Return whether EH has pc-relative dynamic relocs. */ |
6456 | ||
0a1b45a2 | 6457 | static bool |
8a9e8e72 AM |
6458 | pc_dynrelocs (struct ppc_link_hash_entry *eh) |
6459 | { | |
6460 | struct elf_dyn_relocs *p; | |
6461 | ||
190eb1dd | 6462 | for (p = eh->elf.dyn_relocs; p != NULL; p = p->next) |
8a9e8e72 | 6463 | if (p->pc_count != 0) |
0a1b45a2 AM |
6464 | return true; |
6465 | return false; | |
8a9e8e72 AM |
6466 | } |
6467 | ||
8a2058b5 AM |
6468 | /* Return true if a global entry stub will be created for H. Valid |
6469 | for ELFv2 before plt entries have been allocated. */ | |
6470 | ||
0a1b45a2 | 6471 | static bool |
8a2058b5 AM |
6472 | global_entry_stub (struct elf_link_hash_entry *h) |
6473 | { | |
6474 | struct plt_entry *pent; | |
6475 | ||
6476 | if (!h->pointer_equality_needed | |
6477 | || h->def_regular) | |
0a1b45a2 | 6478 | return false; |
8a2058b5 AM |
6479 | |
6480 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6481 | if (pent->plt.refcount > 0 | |
6482 | && pent->addend == 0) | |
0a1b45a2 | 6483 | return true; |
8a2058b5 | 6484 | |
0a1b45a2 | 6485 | return false; |
8a2058b5 AM |
6486 | } |
6487 | ||
e86ce104 AM |
6488 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6489 | regular object. The current definition is in some section of the | |
6490 | dynamic object, but we're not including those sections. We have to | |
6491 | change the definition to something the rest of the link can | |
6492 | understand. */ | |
6493 | ||
0a1b45a2 | 6494 | static bool |
4ce794b7 AM |
6495 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6496 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6497 | { |
6498 | struct ppc_link_hash_table *htab; | |
5474d94f | 6499 | asection *s, *srel; |
e86ce104 AM |
6500 | |
6501 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 6502 | if (htab == NULL) |
0a1b45a2 | 6503 | return false; |
e86ce104 AM |
6504 | |
6505 | /* Deal with function syms. */ | |
6506 | if (h->type == STT_FUNC | |
e054468f | 6507 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6508 | || h->needs_plt) |
e86ce104 | 6509 | { |
0a1b45a2 AM |
6510 | bool local = (ppc_elf_hash_entry (h)->save_res |
6511 | || SYMBOL_CALLS_LOCAL (info, h) | |
6512 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
529fe20e AM |
6513 | /* Discard dyn_relocs when non-pic if we've decided that a |
6514 | function symbol is local and not an ifunc. We keep dynamic | |
6515 | relocs for ifuncs when local rather than always emitting a | |
6516 | plt call stub for them and defining the symbol on the call | |
6517 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6518 | is defined on a descriptor, not code) and it can be faster at | |
6519 | run-time due to not needing to bounce through a stub. The | |
6520 | dyn_relocs for ifuncs will be applied even in a static | |
6521 | executable. */ | |
6522 | if (!bfd_link_pic (info) | |
6523 | && h->type != STT_GNU_IFUNC | |
6524 | && local) | |
190eb1dd | 6525 | h->dyn_relocs = NULL; |
529fe20e | 6526 | |
e86ce104 AM |
6527 | /* Clear procedure linkage table information for any symbol that |
6528 | won't need a .plt entry. */ | |
411e1bfb AM |
6529 | struct plt_entry *ent; |
6530 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6531 | if (ent->plt.refcount > 0) | |
6532 | break; | |
8387904d | 6533 | if (ent == NULL |
2d7ad24e AM |
6534 | || (h->type != STT_GNU_IFUNC |
6535 | && local | |
3e04d765 | 6536 | && (htab->can_convert_all_inline_plt |
ed7007c1 | 6537 | || (ppc_elf_hash_entry (h)->tls_mask |
3e04d765 | 6538 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) |
40b8271b | 6539 | { |
411e1bfb | 6540 | h->plt.plist = NULL; |
f5385ebf | 6541 | h->needs_plt = 0; |
d1eca1e4 | 6542 | h->pointer_equality_needed = 0; |
40b8271b | 6543 | } |
8a2058b5 | 6544 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6545 | { |
d1eca1e4 AM |
6546 | /* Taking a function's address in a read/write section |
6547 | doesn't require us to define the function symbol in the | |
6548 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6549 | be used instead. The reason we prefer a few more dynamic |
6550 | relocs is that calling via a global entry stub costs a | |
6551 | few more instructions, and pointer_equality_needed causes | |
6552 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6553 | if (global_entry_stub (h)) |
d1eca1e4 | 6554 | { |
5dbc8b37 | 6555 | if (!_bfd_elf_readonly_dynrelocs (h)) |
529fe20e AM |
6556 | { |
6557 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6558 | /* If we haven't seen a branch reloc and the symbol |
6559 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6560 | if (!h->needs_plt) |
6561 | h->plt.plist = NULL; | |
6562 | } | |
6563 | else if (!bfd_link_pic (info)) | |
6564 | /* We are going to be defining the function symbol on the | |
6565 | plt stub, so no dyn_relocs needed when non-pic. */ | |
190eb1dd | 6566 | h->dyn_relocs = NULL; |
d1eca1e4 AM |
6567 | } |
6568 | ||
3988aed5 | 6569 | /* ELFv2 function symbols can't have copy relocs. */ |
0a1b45a2 | 6570 | return true; |
3988aed5 AM |
6571 | } |
6572 | else if (!h->needs_plt | |
5dbc8b37 | 6573 | && !_bfd_elf_readonly_dynrelocs (h)) |
3988aed5 | 6574 | { |
04383fd1 AM |
6575 | /* If we haven't seen a branch reloc and the symbol isn't an |
6576 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6577 | h->plt.plist = NULL; |
6578 | h->pointer_equality_needed = 0; | |
0a1b45a2 | 6579 | return true; |
a345bc8d | 6580 | } |
5bd4f169 | 6581 | } |
bbd7ec4a | 6582 | else |
411e1bfb | 6583 | h->plt.plist = NULL; |
5bd4f169 AM |
6584 | |
6585 | /* If this is a weak symbol, and there is a real definition, the | |
6586 | processor independent code will have arranged for us to see the | |
6587 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6588 | if (h->is_weakalias) |
5bd4f169 | 6589 | { |
60d67dc8 AM |
6590 | struct elf_link_hash_entry *def = weakdef (h); |
6591 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6592 | h->root.u.def.section = def->root.u.def.section; | |
6593 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6594 | if (def->root.u.def.section == htab->elf.sdynbss |
6595 | || def->root.u.def.section == htab->elf.sdynrelro) | |
190eb1dd | 6596 | h->dyn_relocs = NULL; |
0a1b45a2 | 6597 | return true; |
5bd4f169 AM |
6598 | } |
6599 | ||
5bd4f169 AM |
6600 | /* If we are creating a shared library, we must presume that the |
6601 | only references to the symbol are via the global offset table. | |
6602 | For such cases we need not do anything here; the relocations will | |
6603 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6604 | if (!bfd_link_executable (info)) |
0a1b45a2 | 6605 | return true; |
5bd4f169 | 6606 | |
65f38f15 AM |
6607 | /* If there are no references to this symbol that do not use the |
6608 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6609 | if (!h->non_got_ref) |
0a1b45a2 | 6610 | return true; |
65f38f15 | 6611 | |
b186458a | 6612 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6613 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6614 | |
d93d1c80 AM |
6615 | /* If -z nocopyreloc was given, don't generate them either. */ |
6616 | || info->nocopyreloc | |
a127494f | 6617 | |
dce2246a | 6618 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6619 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6620 | || (ELIMINATE_COPY_RELOCS |
6621 | && !h->needs_copy | |
6622 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6623 | |
d93d1c80 AM |
6624 | /* Protected variables do not work with .dynbss. The copy in |
6625 | .dynbss won't be used by the shared library with the protected | |
6626 | definition for the variable. Text relocations are preferable | |
6627 | to an incorrect program. */ | |
6628 | || h->protected_def) | |
0a1b45a2 | 6629 | return true; |
a127494f | 6630 | |
e1c6cf61 AM |
6631 | if (h->type == STT_FUNC |
6632 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6633 | { |
e1c6cf61 AM |
6634 | /* .dynbss copies of function symbols only work if we have |
6635 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6636 | use dot-symbols and set the function symbol size to the text | |
6637 | size of the function rather than the size of the descriptor. | |
6638 | That's wrong for copying a descriptor. */ | |
ed7007c1 | 6639 | if (ppc_elf_hash_entry (h)->oh == NULL |
e1c6cf61 | 6640 | || !(h->size == 24 || h->size == 16)) |
0a1b45a2 | 6641 | return true; |
e1c6cf61 AM |
6642 | |
6643 | /* We should never get here, but unfortunately there are old | |
6644 | versions of gcc (circa gcc-3.2) that improperly for the | |
6645 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6646 | suchlike in read-only sections. Allow them to proceed, but | |
6647 | warn that this might break at runtime. */ | |
25f53a85 | 6648 | info->callbacks->einfo |
c1c8c1ef | 6649 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6650 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6651 | h->root.root.string); |
6652 | } | |
5d35169e AM |
6653 | |
6654 | /* This is a reference to a symbol defined by a dynamic object which | |
6655 | is not a function. */ | |
6656 | ||
5bd4f169 AM |
6657 | /* We must allocate the symbol in our .dynbss section, which will |
6658 | become part of the .bss section of the executable. There will be | |
6659 | an entry for this symbol in the .dynsym section. The dynamic | |
6660 | object will contain position independent code, so all references | |
6661 | from the dynamic object to this symbol will go through the global | |
6662 | offset table. The dynamic linker will use the .dynsym entry to | |
6663 | determine the address it must put in the global offset table, so | |
6664 | both the dynamic object and the regular object will refer to the | |
6665 | same memory location for the variable. */ | |
5474d94f AM |
6666 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6667 | { | |
6668 | s = htab->elf.sdynrelro; | |
6669 | srel = htab->elf.sreldynrelro; | |
6670 | } | |
6671 | else | |
6672 | { | |
6673 | s = htab->elf.sdynbss; | |
6674 | srel = htab->elf.srelbss; | |
6675 | } | |
1d7e9d18 | 6676 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6677 | { |
4a7e5234 AM |
6678 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6679 | linker to copy the initial value out of the dynamic object | |
6680 | and into the runtime process image. */ | |
5474d94f | 6681 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6682 | h->needs_copy = 1; |
5bd4f169 AM |
6683 | } |
6684 | ||
529fe20e | 6685 | /* We no longer want dyn_relocs. */ |
190eb1dd | 6686 | h->dyn_relocs = NULL; |
6cabe1ea | 6687 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6688 | } |
6689 | ||
e86ce104 AM |
6690 | /* If given a function descriptor symbol, hide both the function code |
6691 | sym and the descriptor. */ | |
6692 | static void | |
4ce794b7 AM |
6693 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6694 | struct elf_link_hash_entry *h, | |
0a1b45a2 | 6695 | bool force_local) |
e86ce104 | 6696 | { |
34814b9f | 6697 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6698 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6699 | ||
87469ba2 AM |
6700 | if (ppc_hash_table (info) == NULL) |
6701 | return; | |
6702 | ||
ed7007c1 | 6703 | eh = ppc_elf_hash_entry (h); |
34814b9f | 6704 | if (eh->is_func_descriptor) |
e86ce104 | 6705 | { |
34814b9f | 6706 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6707 | |
721956f4 | 6708 | if (fh == NULL) |
d1329ca3 AM |
6709 | { |
6710 | const char *p, *q; | |
b8ac2841 | 6711 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6712 | char save; |
6713 | ||
6714 | /* We aren't supposed to use alloca in BFD because on | |
6715 | systems which do not have alloca the version in libiberty | |
6716 | calls xmalloc, which might cause the program to crash | |
6717 | when it runs out of memory. This function doesn't have a | |
6718 | return status, so there's no way to gracefully return an | |
6719 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6720 | accessed; It's either a string in an ELF string table, |
6721 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6722 | |
34814b9f | 6723 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6724 | save = *p; |
6725 | *(char *) p = '.'; | |
0a1b45a2 AM |
6726 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, false, |
6727 | false, false)); | |
d1329ca3 AM |
6728 | *(char *) p = save; |
6729 | ||
6730 | /* Unfortunately, if it so happens that the string we were | |
6731 | looking for was allocated immediately before this string, | |
6732 | then we overwrote the string terminator. That's the only | |
6733 | reason the lookup should fail. */ | |
6734 | if (fh == NULL) | |
6735 | { | |
34814b9f AM |
6736 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6737 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6738 | --q, --p; |
34814b9f | 6739 | if (q < eh->elf.root.root.string && *p == '.') |
0a1b45a2 AM |
6740 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, false, |
6741 | false, false)); | |
d1329ca3 AM |
6742 | } |
6743 | if (fh != NULL) | |
6744 | { | |
34814b9f AM |
6745 | eh->oh = fh; |
6746 | fh->oh = eh; | |
d1329ca3 AM |
6747 | } |
6748 | } | |
e86ce104 | 6749 | if (fh != NULL) |
34814b9f | 6750 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6751 | } |
6752 | } | |
6753 | ||
0a1b45a2 | 6754 | static bool |
8843416a AM |
6755 | get_sym_h (struct elf_link_hash_entry **hp, |
6756 | Elf_Internal_Sym **symp, | |
6757 | asection **symsecp, | |
f961d9dd | 6758 | unsigned char **tls_maskp, |
8843416a AM |
6759 | Elf_Internal_Sym **locsymsp, |
6760 | unsigned long r_symndx, | |
6761 | bfd *ibfd) | |
411e1bfb | 6762 | { |
0ffa91dd | 6763 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6764 | |
6765 | if (r_symndx >= symtab_hdr->sh_info) | |
6766 | { | |
6767 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6768 | struct elf_link_hash_entry *h; | |
6769 | ||
6770 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6771 | h = elf_follow_link (h); |
411e1bfb AM |
6772 | |
6773 | if (hp != NULL) | |
6774 | *hp = h; | |
6775 | ||
6776 | if (symp != NULL) | |
6777 | *symp = NULL; | |
6778 | ||
6779 | if (symsecp != NULL) | |
6780 | { | |
6781 | asection *symsec = NULL; | |
6782 | if (h->root.type == bfd_link_hash_defined | |
6783 | || h->root.type == bfd_link_hash_defweak) | |
6784 | symsec = h->root.u.def.section; | |
6785 | *symsecp = symsec; | |
6786 | } | |
6787 | ||
e7b938ca | 6788 | if (tls_maskp != NULL) |
ed7007c1 | 6789 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; |
411e1bfb AM |
6790 | } |
6791 | else | |
6792 | { | |
6793 | Elf_Internal_Sym *sym; | |
6794 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6795 | ||
6796 | if (locsyms == NULL) | |
6797 | { | |
6798 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6799 | if (locsyms == NULL) | |
6800 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6801 | symtab_hdr->sh_info, | |
6802 | 0, NULL, NULL, NULL); | |
6803 | if (locsyms == NULL) | |
0a1b45a2 | 6804 | return false; |
411e1bfb AM |
6805 | *locsymsp = locsyms; |
6806 | } | |
6807 | sym = locsyms + r_symndx; | |
6808 | ||
6809 | if (hp != NULL) | |
6810 | *hp = NULL; | |
6811 | ||
6812 | if (symp != NULL) | |
6813 | *symp = sym; | |
6814 | ||
6815 | if (symsecp != NULL) | |
cb33740c | 6816 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6817 | |
e7b938ca | 6818 | if (tls_maskp != NULL) |
411e1bfb AM |
6819 | { |
6820 | struct got_entry **lgot_ents; | |
f961d9dd | 6821 | unsigned char *tls_mask; |
411e1bfb | 6822 | |
e7b938ca | 6823 | tls_mask = NULL; |
411e1bfb AM |
6824 | lgot_ents = elf_local_got_ents (ibfd); |
6825 | if (lgot_ents != NULL) | |
6826 | { | |
e054468f AM |
6827 | struct plt_entry **local_plt = (struct plt_entry **) |
6828 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6829 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6830 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6831 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6832 | } |
e7b938ca | 6833 | *tls_maskp = tls_mask; |
411e1bfb AM |
6834 | } |
6835 | } | |
0a1b45a2 | 6836 | return true; |
411e1bfb AM |
6837 | } |
6838 | ||
e7b938ca | 6839 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6840 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6841 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6842 | |
6843 | static int | |
f961d9dd | 6844 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6845 | unsigned long *toc_symndx, |
6846 | bfd_vma *toc_addend, | |
0d4792f7 | 6847 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6848 | const Elf_Internal_Rela *rel, |
6849 | bfd *ibfd) | |
411e1bfb AM |
6850 | { |
6851 | unsigned long r_symndx; | |
0d4792f7 | 6852 | int next_r; |
411e1bfb AM |
6853 | struct elf_link_hash_entry *h; |
6854 | Elf_Internal_Sym *sym; | |
6855 | asection *sec; | |
6856 | bfd_vma off; | |
6857 | ||
6858 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6859 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6860 | return 0; |
411e1bfb | 6861 | |
37da22e5 AM |
6862 | if ((*tls_maskp != NULL |
6863 | && (**tls_maskp & TLS_TLS) != 0 | |
6864 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6865 | || sec == NULL |
6bee8834 | 6866 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6867 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6868 | return 1; |
411e1bfb AM |
6869 | |
6870 | /* Look inside a TOC section too. */ | |
6871 | if (h != NULL) | |
6872 | { | |
6873 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6874 | off = h->root.u.def.value; | |
6875 | } | |
6876 | else | |
6877 | off = sym->st_value; | |
6878 | off += rel->r_addend; | |
6879 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6880 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6881 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6882 | if (toc_symndx != NULL) |
6883 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6884 | if (toc_addend != NULL) |
6885 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6886 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6887 | return 0; | |
854b41e7 | 6888 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6889 | && (next_r == -1 || next_r == -2)) |
6890 | return 1 - next_r; | |
951fd09b | 6891 | return 1; |
411e1bfb AM |
6892 | } |
6893 | ||
3b421ab3 AM |
6894 | /* Find (or create) an entry in the tocsave hash table. */ |
6895 | ||
6896 | static struct tocsave_entry * | |
6897 | tocsave_find (struct ppc_link_hash_table *htab, | |
6898 | enum insert_option insert, | |
6899 | Elf_Internal_Sym **local_syms, | |
6900 | const Elf_Internal_Rela *irela, | |
6901 | bfd *ibfd) | |
6902 | { | |
6903 | unsigned long r_indx; | |
6904 | struct elf_link_hash_entry *h; | |
6905 | Elf_Internal_Sym *sym; | |
6906 | struct tocsave_entry ent, *p; | |
6907 | hashval_t hash; | |
6908 | struct tocsave_entry **slot; | |
6909 | ||
6910 | r_indx = ELF64_R_SYM (irela->r_info); | |
6911 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6912 | return NULL; | |
6913 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6914 | { | |
4eca0228 | 6915 | _bfd_error_handler |
871b3ab2 | 6916 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6917 | return NULL; |
6918 | } | |
6919 | ||
6920 | if (h != NULL) | |
6921 | ent.offset = h->root.u.def.value; | |
6922 | else | |
6923 | ent.offset = sym->st_value; | |
6924 | ent.offset += irela->r_addend; | |
6925 | ||
6926 | hash = tocsave_htab_hash (&ent); | |
6927 | slot = ((struct tocsave_entry **) | |
6928 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6929 | if (slot == NULL) | |
6930 | return NULL; | |
6931 | ||
6932 | if (*slot == NULL) | |
6933 | { | |
6934 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6935 | if (p == NULL) | |
6936 | return NULL; | |
6937 | *p = ent; | |
6938 | *slot = p; | |
6939 | } | |
6940 | return *slot; | |
6941 | } | |
6942 | ||
754021d0 | 6943 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6944 | code for the old ABI, these will already have been done. */ |
754021d0 | 6945 | |
0a1b45a2 | 6946 | static bool |
754021d0 AM |
6947 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) |
6948 | { | |
6949 | struct ppc_link_hash_entry *eh; | |
6950 | asection *sym_sec; | |
74f0fb50 | 6951 | struct _opd_sec_data *opd; |
754021d0 AM |
6952 | |
6953 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 6954 | return true; |
754021d0 | 6955 | |
754021d0 AM |
6956 | if (h->root.type != bfd_link_hash_defined |
6957 | && h->root.type != bfd_link_hash_defweak) | |
0a1b45a2 | 6958 | return true; |
754021d0 | 6959 | |
ed7007c1 | 6960 | eh = ppc_elf_hash_entry (h); |
754021d0 | 6961 | if (eh->adjust_done) |
0a1b45a2 | 6962 | return true; |
754021d0 AM |
6963 | |
6964 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6965 | opd = get_opd_info (sym_sec); |
6966 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6967 | { |
51aecdc5 | 6968 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6969 | if (adjust == -1) |
6970 | { | |
6971 | /* This entry has been deleted. */ | |
b3fac117 | 6972 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6973 | if (dsec == NULL) |
6974 | { | |
6975 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6976 | if (discarded_section (dsec)) |
81688140 | 6977 | { |
b3fac117 | 6978 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6979 | break; |
6980 | } | |
6981 | } | |
4025353c | 6982 | eh->elf.root.u.def.value = 0; |
81688140 | 6983 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6984 | } |
6985 | else | |
6986 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6987 | eh->adjust_done = 1; |
6988 | } | |
0a1b45a2 | 6989 | return true; |
754021d0 AM |
6990 | } |
6991 | ||
8c1d1bb8 | 6992 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6993 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6994 | have already been determined. */ |
6995 | ||
0a1b45a2 | 6996 | static bool |
8c1d1bb8 AM |
6997 | dec_dynrel_count (bfd_vma r_info, |
6998 | asection *sec, | |
6999 | struct bfd_link_info *info, | |
7000 | Elf_Internal_Sym **local_syms, | |
7001 | struct elf_link_hash_entry *h, | |
19e08130 | 7002 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7003 | { |
7004 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7005 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7006 | |
7007 | /* Can this reloc be dynamic? This switch, and later tests here | |
7008 | should be kept in sync with the code in check_relocs. */ | |
7009 | r_type = ELF64_R_TYPE (r_info); | |
7010 | switch (r_type) | |
7011 | { | |
7012 | default: | |
0a1b45a2 | 7013 | return true; |
8c1d1bb8 | 7014 | |
1bdd8fac AM |
7015 | case R_PPC64_TOC16: |
7016 | case R_PPC64_TOC16_DS: | |
7017 | case R_PPC64_TOC16_LO: | |
7018 | case R_PPC64_TOC16_HI: | |
7019 | case R_PPC64_TOC16_HA: | |
7020 | case R_PPC64_TOC16_LO_DS: | |
7021 | if (h == NULL) | |
0a1b45a2 | 7022 | return true; |
1bdd8fac AM |
7023 | break; |
7024 | ||
8c1d1bb8 AM |
7025 | case R_PPC64_TPREL16: |
7026 | case R_PPC64_TPREL16_LO: | |
7027 | case R_PPC64_TPREL16_HI: | |
7028 | case R_PPC64_TPREL16_HA: | |
7029 | case R_PPC64_TPREL16_DS: | |
7030 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7031 | case R_PPC64_TPREL16_HIGH: |
7032 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7033 | case R_PPC64_TPREL16_HIGHER: |
7034 | case R_PPC64_TPREL16_HIGHERA: | |
7035 | case R_PPC64_TPREL16_HIGHEST: | |
7036 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 7037 | case R_PPC64_TPREL64: |
c213164a | 7038 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
7039 | case R_PPC64_DTPMOD64: |
7040 | case R_PPC64_DTPREL64: | |
7041 | case R_PPC64_ADDR64: | |
7042 | case R_PPC64_REL30: | |
7043 | case R_PPC64_REL32: | |
7044 | case R_PPC64_REL64: | |
7045 | case R_PPC64_ADDR14: | |
7046 | case R_PPC64_ADDR14_BRNTAKEN: | |
7047 | case R_PPC64_ADDR14_BRTAKEN: | |
7048 | case R_PPC64_ADDR16: | |
7049 | case R_PPC64_ADDR16_DS: | |
7050 | case R_PPC64_ADDR16_HA: | |
7051 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7052 | case R_PPC64_ADDR16_HIGH: |
7053 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7054 | case R_PPC64_ADDR16_HIGHER: |
7055 | case R_PPC64_ADDR16_HIGHERA: | |
7056 | case R_PPC64_ADDR16_HIGHEST: | |
7057 | case R_PPC64_ADDR16_HIGHESTA: | |
7058 | case R_PPC64_ADDR16_LO: | |
7059 | case R_PPC64_ADDR16_LO_DS: | |
7060 | case R_PPC64_ADDR24: | |
7061 | case R_PPC64_ADDR32: | |
7062 | case R_PPC64_UADDR16: | |
7063 | case R_PPC64_UADDR32: | |
7064 | case R_PPC64_UADDR64: | |
7065 | case R_PPC64_TOC: | |
5663e321 AM |
7066 | case R_PPC64_D34: |
7067 | case R_PPC64_D34_LO: | |
7068 | case R_PPC64_D34_HI30: | |
7069 | case R_PPC64_D34_HA30: | |
7070 | case R_PPC64_ADDR16_HIGHER34: | |
7071 | case R_PPC64_ADDR16_HIGHERA34: | |
7072 | case R_PPC64_ADDR16_HIGHEST34: | |
7073 | case R_PPC64_ADDR16_HIGHESTA34: | |
7074 | case R_PPC64_D28: | |
8c1d1bb8 AM |
7075 | break; |
7076 | } | |
7077 | ||
7078 | if (local_syms != NULL) | |
7079 | { | |
7080 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7081 | bfd *ibfd = sec->owner; |
7082 | ||
7083 | r_symndx = ELF64_R_SYM (r_info); | |
7084 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
0a1b45a2 | 7085 | return false; |
8c1d1bb8 AM |
7086 | } |
7087 | ||
ec73ddcd AM |
7088 | if ((h != NULL |
7089 | && (h->root.type == bfd_link_hash_defweak | |
7090 | || !h->def_regular)) | |
7091 | || (h != NULL | |
7092 | && !bfd_link_executable (info) | |
7093 | && !SYMBOLIC_BIND (info, h)) | |
7094 | || (bfd_link_pic (info) | |
7095 | && must_be_dyn_reloc (info, r_type)) | |
7096 | || (!bfd_link_pic (info) | |
7097 | && (h != NULL | |
7098 | ? h->type == STT_GNU_IFUNC | |
7099 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
7100 | ; |
7101 | else | |
0a1b45a2 | 7102 | return true; |
8c1d1bb8 AM |
7103 | |
7104 | if (h != NULL) | |
6edfbbad | 7105 | { |
19e08130 AM |
7106 | struct elf_dyn_relocs *p; |
7107 | struct elf_dyn_relocs **pp; | |
190eb1dd | 7108 | pp = &h->dyn_relocs; |
19e08130 AM |
7109 | |
7110 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7111 | with local syms for a given section. Also, symbol flags are | |
7112 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7113 | report a dynreloc miscount. */ | |
7114 | if (*pp == NULL && info->gc_sections) | |
0a1b45a2 | 7115 | return true; |
19e08130 AM |
7116 | |
7117 | while ((p = *pp) != NULL) | |
60124e18 | 7118 | { |
19e08130 AM |
7119 | if (p->sec == sec) |
7120 | { | |
7121 | if (!must_be_dyn_reloc (info, r_type)) | |
7122 | p->pc_count -= 1; | |
7123 | p->count -= 1; | |
7124 | if (p->count == 0) | |
7125 | *pp = p->next; | |
0a1b45a2 | 7126 | return true; |
19e08130 AM |
7127 | } |
7128 | pp = &p->next; | |
60124e18 | 7129 | } |
6edfbbad | 7130 | } |
19e08130 AM |
7131 | else |
7132 | { | |
7133 | struct ppc_dyn_relocs *p; | |
7134 | struct ppc_dyn_relocs **pp; | |
7135 | void *vpp; | |
0a1b45a2 | 7136 | bool is_ifunc; |
8c1d1bb8 | 7137 | |
19e08130 AM |
7138 | if (local_syms == NULL) |
7139 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7140 | if (sym_sec == NULL) | |
7141 | sym_sec = sec; | |
c57da1a7 | 7142 | |
19e08130 AM |
7143 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7144 | pp = (struct ppc_dyn_relocs **) vpp; | |
7145 | ||
7146 | if (*pp == NULL && info->gc_sections) | |
0a1b45a2 | 7147 | return true; |
19e08130 AM |
7148 | |
7149 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7150 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7151 | { |
19e08130 AM |
7152 | if (p->sec == sec && p->ifunc == is_ifunc) |
7153 | { | |
7154 | p->count -= 1; | |
7155 | if (p->count == 0) | |
7156 | *pp = p->next; | |
0a1b45a2 | 7157 | return true; |
19e08130 AM |
7158 | } |
7159 | pp = &p->next; | |
8c1d1bb8 | 7160 | } |
8c1d1bb8 AM |
7161 | } |
7162 | ||
695344c0 | 7163 | /* xgettext:c-format */ |
cf97bcb0 AM |
7164 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7165 | sec->owner, sec); | |
8c1d1bb8 | 7166 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 7167 | return false; |
8c1d1bb8 AM |
7168 | } |
7169 | ||
754021d0 AM |
7170 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7171 | only remove those associated with functions in discarded link-once | |
7172 | sections, or weakly defined functions that have been overridden. It | |
7173 | would be possible to remove many more entries for statically linked | |
7174 | applications. */ | |
7175 | ||
0a1b45a2 | 7176 | bool |
e7d1c40c | 7177 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7178 | { |
7179 | bfd *ibfd; | |
0a1b45a2 | 7180 | bool some_edited = false; |
3f764659 | 7181 | asection *need_pad = NULL; |
e7d1c40c AM |
7182 | struct ppc_link_hash_table *htab; |
7183 | ||
7184 | htab = ppc_hash_table (info); | |
7185 | if (htab == NULL) | |
0a1b45a2 | 7186 | return false; |
1e2f5b6e | 7187 | |
c72f2fb2 | 7188 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7189 | { |
7190 | asection *sec; | |
7191 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7192 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7193 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7194 | struct _opd_sec_data *opd; |
0a1b45a2 | 7195 | bool need_edit, add_aux_fields, broken; |
3f764659 | 7196 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7197 | |
854b41e7 AM |
7198 | if (!is_ppc64_elf (ibfd)) |
7199 | continue; | |
7200 | ||
1e2f5b6e | 7201 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7202 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7203 | continue; |
7204 | ||
dbaa2011 | 7205 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7206 | continue; |
7207 | ||
1e2f5b6e AM |
7208 | if (sec->output_section == bfd_abs_section_ptr) |
7209 | continue; | |
7210 | ||
7211 | /* Look through the section relocs. */ | |
7212 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7213 | continue; | |
7214 | ||
6cdc0ccc | 7215 | local_syms = NULL; |
0ffa91dd | 7216 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7217 | |
7218 | /* Read the relocations. */ | |
4ce794b7 | 7219 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7220 | info->keep_memory); |
1e2f5b6e | 7221 | if (relstart == NULL) |
0a1b45a2 | 7222 | return false; |
1e2f5b6e AM |
7223 | |
7224 | /* First run through the relocs to check they are sane, and to | |
7225 | determine whether we need to edit this opd section. */ | |
0a1b45a2 AM |
7226 | need_edit = false; |
7227 | broken = false; | |
3f764659 | 7228 | need_pad = sec; |
1e2f5b6e | 7229 | relend = relstart + sec->reloc_count; |
50bc7936 | 7230 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7231 | { |
04c9666a | 7232 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7233 | unsigned long r_symndx; |
7234 | asection *sym_sec; | |
7235 | struct elf_link_hash_entry *h; | |
7236 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7237 | bfd_vma offset; |
1e2f5b6e | 7238 | |
51aecdc5 | 7239 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7240 | only interested in the reloc pointing to a function entry |
7241 | point. */ | |
51aecdc5 AM |
7242 | offset = rel->r_offset; |
7243 | if (rel + 1 == relend | |
7244 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7245 | { |
7246 | /* If someone messes with .opd alignment then after a | |
7247 | "ld -r" we might have padding in the middle of .opd. | |
7248 | Also, there's nothing to prevent someone putting | |
7249 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7250 | optimization for them! */ |
3f764659 | 7251 | broken_opd: |
4eca0228 | 7252 | _bfd_error_handler |
871b3ab2 | 7253 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
0a1b45a2 | 7254 | broken = true; |
1e2f5b6e AM |
7255 | break; |
7256 | } | |
7257 | ||
50bc7936 AM |
7258 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7259 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7260 | { | |
4eca0228 | 7261 | _bfd_error_handler |
695344c0 | 7262 | /* xgettext:c-format */ |
871b3ab2 | 7263 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7264 | ibfd, r_type); |
0a1b45a2 | 7265 | broken = true; |
50bc7936 AM |
7266 | break; |
7267 | } | |
7268 | ||
1e2f5b6e | 7269 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7270 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7271 | r_symndx, ibfd)) | |
50bc7936 | 7272 | goto error_ret; |
1e2f5b6e AM |
7273 | |
7274 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7275 | { | |
411e1bfb AM |
7276 | const char *sym_name; |
7277 | if (h != NULL) | |
7278 | sym_name = h->root.root.string; | |
7279 | else | |
26c61ae5 L |
7280 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7281 | sym_sec); | |
411e1bfb | 7282 | |
4eca0228 | 7283 | _bfd_error_handler |
695344c0 | 7284 | /* xgettext:c-format */ |
871b3ab2 | 7285 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7286 | ibfd, sym_name); |
0a1b45a2 | 7287 | broken = true; |
1e2f5b6e AM |
7288 | break; |
7289 | } | |
7290 | ||
51020317 AM |
7291 | /* opd entries are always for functions defined in the |
7292 | current input bfd. If the symbol isn't defined in the | |
7293 | input bfd, then we won't be using the function in this | |
7294 | bfd; It must be defined in a linkonce section in another | |
7295 | bfd, or is weak. It's also possible that we are | |
7296 | discarding the function due to a linker script /DISCARD/, | |
7297 | which we test for via the output_section. */ | |
7298 | if (sym_sec->owner != ibfd | |
7299 | || sym_sec->output_section == bfd_abs_section_ptr) | |
0a1b45a2 | 7300 | need_edit = true; |
1e2f5b6e | 7301 | |
50bc7936 | 7302 | rel += 2; |
51aecdc5 AM |
7303 | if (rel + 1 == relend |
7304 | || (rel + 2 < relend | |
7305 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7306 | ++rel; | |
7307 | ||
7308 | if (rel == relend) | |
3f764659 JJ |
7309 | { |
7310 | if (sec->size == offset + 24) | |
7311 | { | |
7312 | need_pad = NULL; | |
7313 | break; | |
7314 | } | |
51aecdc5 | 7315 | if (sec->size == offset + 16) |
3f764659 JJ |
7316 | { |
7317 | cnt_16b++; | |
7318 | break; | |
7319 | } | |
7320 | goto broken_opd; | |
7321 | } | |
3f764659 JJ |
7322 | else if (rel + 1 < relend |
7323 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7324 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7325 | { | |
51aecdc5 AM |
7326 | if (rel[0].r_offset == offset + 16) |
7327 | cnt_16b++; | |
7328 | else if (rel[0].r_offset != offset + 24) | |
7329 | goto broken_opd; | |
3f764659 JJ |
7330 | } |
7331 | else | |
7332 | goto broken_opd; | |
1e2f5b6e AM |
7333 | } |
7334 | ||
e7d1c40c | 7335 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7336 | |
51aecdc5 | 7337 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7338 | { |
7339 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7340 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7341 | bfd_byte *rptr, *wptr; |
983bddc8 | 7342 | bfd_byte *new_contents; |
74f0fb50 AM |
7343 | bfd_size_type amt; |
7344 | ||
983bddc8 | 7345 | new_contents = NULL; |
51aecdc5 | 7346 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7347 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7348 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 | 7349 | if (opd->adjust == NULL) |
0a1b45a2 | 7350 | return false; |
1e2f5b6e AM |
7351 | |
7352 | /* This seems a waste of time as input .opd sections are all | |
7353 | zeros as generated by gcc, but I suppose there's no reason | |
7354 | this will always be so. We might start putting something in | |
7355 | the third word of .opd entries. */ | |
7356 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7357 | { | |
eea6121a AM |
7358 | bfd_byte *loc; |
7359 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7360 | { |
c9594989 | 7361 | free (loc); |
50bc7936 | 7362 | error_ret: |
c9594989 | 7363 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
6cdc0ccc | 7364 | free (local_syms); |
6cdc0ccc AM |
7365 | if (elf_section_data (sec)->relocs != relstart) |
7366 | free (relstart); | |
0a1b45a2 | 7367 | return false; |
6cdc0ccc | 7368 | } |
1e2f5b6e AM |
7369 | sec->contents = loc; |
7370 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7371 | } | |
7372 | ||
7373 | elf_section_data (sec)->relocs = relstart; | |
7374 | ||
3f764659 | 7375 | new_contents = sec->contents; |
3f764659 JJ |
7376 | if (add_aux_fields) |
7377 | { | |
7378 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7379 | if (new_contents == NULL) | |
0a1b45a2 | 7380 | return false; |
51aecdc5 | 7381 | need_pad = NULL; |
3f764659 | 7382 | } |
b4f4e59f AM |
7383 | wptr = new_contents; |
7384 | rptr = sec->contents; | |
1e2f5b6e | 7385 | write_rel = relstart; |
51aecdc5 | 7386 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7387 | { |
50bc7936 AM |
7388 | unsigned long r_symndx; |
7389 | asection *sym_sec; | |
7390 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7391 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7392 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7393 | long opd_ent_size; |
7394 | Elf_Internal_Rela *next_rel; | |
0a1b45a2 | 7395 | bool skip; |
50bc7936 AM |
7396 | |
7397 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7398 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7399 | r_symndx, ibfd)) |
50bc7936 AM |
7400 | goto error_ret; |
7401 | ||
51aecdc5 AM |
7402 | next_rel = rel + 2; |
7403 | if (next_rel + 1 == relend | |
7404 | || (next_rel + 2 < relend | |
7405 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7406 | ++next_rel; | |
7407 | ||
7408 | /* See if the .opd entry is full 24 byte or | |
7409 | 16 byte (with fd_aux entry overlapped with next | |
7410 | fd_func). */ | |
7411 | opd_ent_size = 24; | |
7412 | if (next_rel == relend) | |
1e2f5b6e | 7413 | { |
51aecdc5 | 7414 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7415 | opd_ent_size = 16; |
51aecdc5 AM |
7416 | } |
7417 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7418 | opd_ent_size = 16; | |
3f764659 | 7419 | |
51aecdc5 AM |
7420 | if (h != NULL |
7421 | && h->root.root.string[0] == '.') | |
7422 | { | |
ed7007c1 | 7423 | fdh = ppc_elf_hash_entry (h)->oh; |
8c5b4e52 AM |
7424 | if (fdh != NULL) |
7425 | { | |
7426 | fdh = ppc_follow_link (fdh); | |
7427 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7428 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7429 | fdh = NULL; | |
7430 | } | |
51aecdc5 | 7431 | } |
1e2f5b6e | 7432 | |
51aecdc5 AM |
7433 | skip = (sym_sec->owner != ibfd |
7434 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7435 | if (skip) | |
7436 | { | |
7437 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7438 | { |
51aecdc5 AM |
7439 | /* Arrange for the function descriptor sym |
7440 | to be dropped. */ | |
7441 | fdh->elf.root.u.def.value = 0; | |
7442 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7443 | } |
51aecdc5 | 7444 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7445 | |
0e1862bb | 7446 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7447 | rel = next_rel; |
7448 | else | |
7449 | while (1) | |
7450 | { | |
7451 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7452 | NULL, h, sym)) | |
7453 | goto error_ret; | |
754021d0 | 7454 | |
51aecdc5 AM |
7455 | if (++rel == next_rel) |
7456 | break; | |
1e2f5b6e | 7457 | |
51aecdc5 AM |
7458 | r_symndx = ELF64_R_SYM (rel->r_info); |
7459 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7460 | r_symndx, ibfd)) | |
7461 | goto error_ret; | |
7462 | } | |
50bc7936 AM |
7463 | } |
7464 | else | |
1e2f5b6e | 7465 | { |
51aecdc5 AM |
7466 | /* We'll be keeping this opd entry. */ |
7467 | long adjust; | |
7468 | ||
7469 | if (fdh != NULL) | |
7470 | { | |
7471 | /* Redefine the function descriptor symbol to | |
7472 | this location in the opd section. It is | |
7473 | necessary to update the value here rather | |
7474 | than using an array of adjustments as we do | |
7475 | for local symbols, because various places | |
7476 | in the generic ELF code use the value | |
7477 | stored in u.def.value. */ | |
7478 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7479 | fdh->adjust_done = 1; | |
7480 | } | |
7481 | ||
7482 | /* Local syms are a bit tricky. We could | |
7483 | tweak them as they can be cached, but | |
7484 | we'd need to look through the local syms | |
7485 | for the function descriptor sym which we | |
7486 | don't have at the moment. So keep an | |
7487 | array of adjustments. */ | |
7488 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7489 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7490 | ||
7491 | if (wptr != rptr) | |
7492 | memcpy (wptr, rptr, opd_ent_size); | |
7493 | wptr += opd_ent_size; | |
7494 | if (add_aux_fields && opd_ent_size == 16) | |
7495 | { | |
7496 | memset (wptr, '\0', 8); | |
7497 | wptr += 8; | |
7498 | } | |
7499 | ||
50bc7936 | 7500 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7501 | new opd entries. */ |
7502 | for ( ; rel != next_rel; ++rel) | |
7503 | { | |
7504 | rel->r_offset += adjust; | |
7505 | if (write_rel != rel) | |
7506 | memcpy (write_rel, rel, sizeof (*rel)); | |
7507 | ++write_rel; | |
7508 | } | |
1e2f5b6e | 7509 | } |
51aecdc5 AM |
7510 | |
7511 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7512 | } |
7513 | ||
3f764659 | 7514 | sec->size = wptr - new_contents; |
1e2f5b6e | 7515 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7516 | if (add_aux_fields) |
7517 | { | |
7518 | free (sec->contents); | |
7519 | sec->contents = new_contents; | |
7520 | } | |
7521 | ||
05bf9422 | 7522 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7523 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7524 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7525 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
0a1b45a2 | 7526 | some_edited = true; |
1e2f5b6e | 7527 | } |
6cdc0ccc | 7528 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7529 | free (relstart); |
6cdc0ccc | 7530 | |
411e1bfb AM |
7531 | if (local_syms != NULL |
7532 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7533 | { | |
7534 | if (!info->keep_memory) | |
7535 | free (local_syms); | |
7536 | else | |
7537 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7538 | } | |
7539 | } | |
7540 | ||
754021d0 AM |
7541 | if (some_edited) |
7542 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7543 | ||
3f764659 JJ |
7544 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7545 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7546 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7547 | { |
7548 | bfd_byte *p; | |
7549 | ||
7550 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7551 | { | |
7552 | BFD_ASSERT (need_pad->size > 0); | |
7553 | ||
7554 | p = bfd_malloc (need_pad->size + 8); | |
7555 | if (p == NULL) | |
0a1b45a2 | 7556 | return false; |
699733f6 | 7557 | |
2cdcc330 AM |
7558 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7559 | p, 0, need_pad->size)) | |
0a1b45a2 | 7560 | return false; |
3f764659 JJ |
7561 | |
7562 | need_pad->contents = p; | |
7563 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7564 | } | |
7565 | else | |
7566 | { | |
7567 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7568 | if (p == NULL) | |
0a1b45a2 | 7569 | return false; |
3f764659 JJ |
7570 | |
7571 | need_pad->contents = p; | |
7572 | } | |
7573 | ||
7574 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7575 | need_pad->size += 8; | |
7576 | } | |
7577 | ||
0a1b45a2 | 7578 | return true; |
411e1bfb AM |
7579 | } |
7580 | ||
3e04d765 AM |
7581 | /* Analyze inline PLT call relocations to see whether calls to locally |
7582 | defined functions can be converted to direct calls. */ | |
7583 | ||
0a1b45a2 | 7584 | bool |
3e04d765 AM |
7585 | ppc64_elf_inline_plt (struct bfd_link_info *info) |
7586 | { | |
7587 | struct ppc_link_hash_table *htab; | |
7588 | bfd *ibfd; | |
7589 | asection *sec; | |
7590 | bfd_vma low_vma, high_vma, limit; | |
7591 | ||
7592 | htab = ppc_hash_table (info); | |
7593 | if (htab == NULL) | |
0a1b45a2 | 7594 | return false; |
3e04d765 AM |
7595 | |
7596 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7597 | reduced somewhat to cater for possible stubs that might be added | |
7598 | between the call and its destination. */ | |
7599 | if (htab->params->group_size < 0) | |
7600 | { | |
7601 | limit = -htab->params->group_size; | |
7602 | if (limit == 1) | |
7603 | limit = 0x1e00000; | |
7604 | } | |
7605 | else | |
7606 | { | |
7607 | limit = htab->params->group_size; | |
7608 | if (limit == 1) | |
7609 | limit = 0x1c00000; | |
7610 | } | |
7611 | ||
7612 | low_vma = -1; | |
7613 | high_vma = 0; | |
7614 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7615 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7616 | { | |
7617 | if (low_vma > sec->vma) | |
7618 | low_vma = sec->vma; | |
7619 | if (high_vma < sec->vma + sec->size) | |
7620 | high_vma = sec->vma + sec->size; | |
7621 | } | |
7622 | ||
7623 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7624 | convert all inline PLT sequences to direct calls when the symbol | |
7625 | is local. */ | |
7626 | if (high_vma - low_vma < limit) | |
7627 | { | |
7628 | htab->can_convert_all_inline_plt = 1; | |
0a1b45a2 | 7629 | return true; |
3e04d765 AM |
7630 | } |
7631 | ||
7632 | /* Otherwise, go looking through relocs for cases where a direct | |
7633 | call won't reach. Mark the symbol on any such reloc to disable | |
7634 | the optimization and keep the PLT entry as it seems likely that | |
7635 | this will be better than creating trampolines. Note that this | |
7636 | will disable the optimization for all inline PLT calls to a | |
7637 | particular symbol, not just those that won't reach. The | |
7638 | difficulty in doing a more precise optimization is that the | |
7639 | linker needs to make a decision depending on whether a | |
7640 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7641 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7642 | the sequence, and there is nothing that ties those relocs | |
7643 | together except their symbol. */ | |
7644 | ||
7645 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7646 | { | |
7647 | Elf_Internal_Shdr *symtab_hdr; | |
7648 | Elf_Internal_Sym *local_syms; | |
7649 | ||
7650 | if (!is_ppc64_elf (ibfd)) | |
7651 | continue; | |
7652 | ||
7653 | local_syms = NULL; | |
7654 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7655 | ||
7656 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7657 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7658 | && !bfd_is_abs_section (sec->output_section)) | |
7659 | { | |
7660 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7661 | ||
7662 | /* Read the relocations. */ | |
7663 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7664 | info->keep_memory); | |
7665 | if (relstart == NULL) | |
0a1b45a2 | 7666 | return false; |
3e04d765 AM |
7667 | |
7668 | relend = relstart + sec->reloc_count; | |
435edf0b | 7669 | for (rel = relstart; rel < relend; rel++) |
3e04d765 AM |
7670 | { |
7671 | enum elf_ppc64_reloc_type r_type; | |
7672 | unsigned long r_symndx; | |
7673 | asection *sym_sec; | |
7674 | struct elf_link_hash_entry *h; | |
7675 | Elf_Internal_Sym *sym; | |
7676 | unsigned char *tls_maskp; | |
7677 | ||
7678 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7679 | if (r_type != R_PPC64_PLTCALL |
7680 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7681 | continue; |
7682 | ||
7683 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7684 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7685 | r_symndx, ibfd)) | |
7686 | { | |
7687 | if (elf_section_data (sec)->relocs != relstart) | |
7688 | free (relstart); | |
c9594989 | 7689 | if (symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 | 7690 | free (local_syms); |
0a1b45a2 | 7691 | return false; |
3e04d765 AM |
7692 | } |
7693 | ||
7694 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7695 | { | |
7696 | bfd_vma from, to; | |
7697 | if (h != NULL) | |
7698 | to = h->root.u.def.value; | |
7699 | else | |
7700 | to = sym->st_value; | |
7701 | to += (rel->r_addend | |
7702 | + sym_sec->output_offset | |
7703 | + sym_sec->output_section->vma); | |
7704 | from = (rel->r_offset | |
7705 | + sec->output_offset | |
7706 | + sec->output_section->vma); | |
5663e321 AM |
7707 | if (to - from + limit < 2 * limit |
7708 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7709 | && (((h ? h->other : sym->st_other) | |
7710 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7711 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7712 | *tls_maskp &= ~PLT_KEEP; |
7713 | } | |
7714 | } | |
7715 | if (elf_section_data (sec)->relocs != relstart) | |
7716 | free (relstart); | |
7717 | } | |
7718 | ||
7719 | if (local_syms != NULL | |
7720 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7721 | { | |
7722 | if (!info->keep_memory) | |
7723 | free (local_syms); | |
7724 | else | |
7725 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7726 | } | |
7727 | } | |
7728 | ||
0a1b45a2 | 7729 | return true; |
3e04d765 AM |
7730 | } |
7731 | ||
c9405344 AM |
7732 | /* Set htab->tls_get_addr and various other info specific to TLS. |
7733 | This needs to run before dynamic symbols are processed in | |
7734 | bfd_elf_size_dynamic_sections. */ | |
411e1bfb | 7735 | |
0a1b45a2 | 7736 | bool |
e7d1c40c | 7737 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7738 | { |
411e1bfb | 7739 | struct ppc_link_hash_table *htab; |
9e7028aa | 7740 | struct elf_link_hash_entry *tga, *tga_fd, *desc, *desc_fd; |
411e1bfb | 7741 | |
411e1bfb | 7742 | htab = ppc_hash_table (info); |
4dfe6ac6 | 7743 | if (htab == NULL) |
0a1b45a2 | 7744 | return false; |
4dfe6ac6 | 7745 | |
ee67d69a AM |
7746 | if (abiversion (info->output_bfd) == 1) |
7747 | htab->opd_abi = 1; | |
7748 | ||
e7d1c40c | 7749 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7750 | htab->do_multi_toc = 0; |
7751 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7752 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7753 | |
8b5f1ed8 AM |
7754 | /* Default to --no-plt-localentry, as this option can cause problems |
7755 | with symbol interposition. For example, glibc libpthread.so and | |
7756 | libc.so duplicate many pthread symbols, with a fallback | |
7757 | implementation in libc.so. In some cases the fallback does more | |
7758 | work than the pthread implementation. __pthread_condattr_destroy | |
7759 | is one such symbol: the libpthread.so implementation is | |
7760 | localentry:0 while the libc.so implementation is localentry:8. | |
7761 | An app that "cleverly" uses dlopen to only load necessary | |
7762 | libraries at runtime may omit loading libpthread.so when not | |
7763 | running multi-threaded, which then results in the libc.so | |
7764 | fallback symbols being used and ld.so complaining. Now there | |
7765 | are workarounds in ld (see non_zero_localentry) to detect the | |
7766 | pthread situation, but that may not be the only case where | |
7767 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7768 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7769 | htab->params->plt_localentry0 = 0; |
3cd7c7d7 AM |
7770 | if (htab->params->plt_localentry0 && htab->has_power10_relocs) |
7771 | { | |
7772 | /* The issue is that __glink_PLTresolve saves r2, which is done | |
7773 | because glibc ld.so _dl_runtime_resolve restores r2 to support | |
7774 | a glibc plt call optimisation where global entry code is | |
7775 | skipped on calls that resolve to the same binary. The | |
7776 | __glink_PLTresolve save of r2 is incompatible with code | |
7777 | making tail calls, because the tail call might go via the | |
7778 | resolver and thus overwrite the proper saved r2. */ | |
7779 | _bfd_error_handler (_("warning: --plt-localentry is incompatible with " | |
7780 | "power10 pc-relative code")); | |
7781 | htab->params->plt_localentry0 = 0; | |
7782 | } | |
d44c746a AM |
7783 | if (htab->params->plt_localentry0 |
7784 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
0a1b45a2 | 7785 | false, false, false) == NULL) |
cf97bcb0 AM |
7786 | _bfd_error_handler |
7787 | (_("warning: --plt-localentry is especially dangerous without " | |
7788 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7789 | |
9e7028aa | 7790 | tga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
0a1b45a2 | 7791 | false, false, true); |
9e7028aa AM |
7792 | htab->tls_get_addr = ppc_elf_hash_entry (tga); |
7793 | ||
a7f2871e | 7794 | /* Move dynamic linking info to the function descriptor sym. */ |
9e7028aa AM |
7795 | if (tga != NULL) |
7796 | func_desc_adjust (tga, info); | |
7797 | tga_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
0a1b45a2 | 7798 | false, false, true); |
9e7028aa AM |
7799 | htab->tls_get_addr_fd = ppc_elf_hash_entry (tga_fd); |
7800 | ||
7801 | desc = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_desc", | |
0a1b45a2 | 7802 | false, false, true); |
9e7028aa AM |
7803 | htab->tga_desc = ppc_elf_hash_entry (desc); |
7804 | if (desc != NULL) | |
7805 | func_desc_adjust (desc, info); | |
7806 | desc_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_desc", | |
0a1b45a2 | 7807 | false, false, true); |
9e7028aa AM |
7808 | htab->tga_desc_fd = ppc_elf_hash_entry (desc_fd); |
7809 | ||
7c9cf415 | 7810 | if (htab->params->tls_get_addr_opt) |
a7f2871e | 7811 | { |
9e7028aa | 7812 | struct elf_link_hash_entry *opt, *opt_fd; |
a7f2871e AM |
7813 | |
7814 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
0a1b45a2 | 7815 | false, false, true); |
a7f2871e AM |
7816 | if (opt != NULL) |
7817 | func_desc_adjust (opt, info); | |
7818 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
0a1b45a2 | 7819 | false, false, true); |
a7f2871e AM |
7820 | if (opt_fd != NULL |
7821 | && (opt_fd->root.type == bfd_link_hash_defined | |
7822 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7823 | { | |
7824 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7825 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7826 | be calling __tls_get_addr via a plt call stub, then | |
7827 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
9e7028aa AM |
7828 | if (!(htab->elf.dynamic_sections_created |
7829 | && tga_fd != NULL | |
7830 | && (tga_fd->type == STT_FUNC | |
7831 | || tga_fd->needs_plt) | |
7832 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7833 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))) | |
7834 | tga_fd = NULL; | |
7835 | if (!(htab->elf.dynamic_sections_created | |
7836 | && desc_fd != NULL | |
7837 | && (desc_fd->type == STT_FUNC | |
7838 | || desc_fd->needs_plt) | |
7839 | && !(SYMBOL_CALLS_LOCAL (info, desc_fd) | |
7840 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, desc_fd)))) | |
7841 | desc_fd = NULL; | |
7842 | ||
7843 | if (tga_fd != NULL || desc_fd != NULL) | |
7844 | { | |
7845 | struct plt_entry *ent = NULL; | |
7846 | ||
7847 | if (tga_fd != NULL) | |
7848 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7849 | if (ent->plt.refcount > 0) | |
7850 | break; | |
7851 | if (ent == NULL && desc_fd != NULL) | |
7852 | for (ent = desc_fd->plt.plist; ent != NULL; ent = ent->next) | |
7853 | if (ent->plt.refcount > 0) | |
7854 | break; | |
a7f2871e AM |
7855 | if (ent != NULL) |
7856 | { | |
9e7028aa AM |
7857 | if (tga_fd != NULL) |
7858 | { | |
7859 | tga_fd->root.type = bfd_link_hash_indirect; | |
7860 | tga_fd->root.u.i.link = &opt_fd->root; | |
7861 | tga_fd->root.u.i.warning = NULL; | |
7862 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7863 | } | |
7864 | if (desc_fd != NULL) | |
7865 | { | |
7866 | desc_fd->root.type = bfd_link_hash_indirect; | |
7867 | desc_fd->root.u.i.link = &opt_fd->root; | |
7868 | desc_fd->root.u.i.warning = NULL; | |
7869 | ppc64_elf_copy_indirect_symbol (info, opt_fd, desc_fd); | |
7870 | } | |
b531344c | 7871 | opt_fd->mark = 1; |
a7f2871e AM |
7872 | if (opt_fd->dynindx != -1) |
7873 | { | |
7874 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7875 | opt_fd->dynindx = -1; | |
7876 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7877 | opt_fd->dynstr_index); | |
7878 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
0a1b45a2 | 7879 | return false; |
a7f2871e | 7880 | } |
9e7028aa | 7881 | if (tga_fd != NULL) |
a7f2871e | 7882 | { |
9e7028aa | 7883 | htab->tls_get_addr_fd = ppc_elf_hash_entry (opt_fd); |
30845f11 | 7884 | tga = elf_hash_entry (htab->tls_get_addr); |
9e7028aa AM |
7885 | if (opt != NULL && tga != NULL) |
7886 | { | |
7887 | tga->root.type = bfd_link_hash_indirect; | |
7888 | tga->root.u.i.link = &opt->root; | |
7889 | tga->root.u.i.warning = NULL; | |
7890 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7891 | opt->mark = 1; | |
7892 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7893 | tga->forced_local); | |
7894 | htab->tls_get_addr = ppc_elf_hash_entry (opt); | |
7895 | } | |
7896 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7897 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7898 | if (htab->tls_get_addr != NULL) | |
7899 | { | |
7900 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7901 | htab->tls_get_addr->is_func = 1; | |
7902 | } | |
a7f2871e | 7903 | } |
9e7028aa | 7904 | if (desc_fd != NULL) |
a7f2871e | 7905 | { |
9e7028aa AM |
7906 | htab->tga_desc_fd = ppc_elf_hash_entry (opt_fd); |
7907 | if (opt != NULL && desc != NULL) | |
7908 | { | |
7909 | desc->root.type = bfd_link_hash_indirect; | |
7910 | desc->root.u.i.link = &opt->root; | |
7911 | desc->root.u.i.warning = NULL; | |
7912 | ppc64_elf_copy_indirect_symbol (info, opt, desc); | |
7913 | opt->mark = 1; | |
7914 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7915 | desc->forced_local); | |
7916 | htab->tga_desc = ppc_elf_hash_entry (opt); | |
7917 | } | |
7918 | htab->tga_desc_fd->oh = htab->tga_desc; | |
7919 | htab->tga_desc_fd->is_func_descriptor = 1; | |
7920 | if (htab->tga_desc != NULL) | |
7921 | { | |
7922 | htab->tga_desc->oh = htab->tga_desc_fd; | |
7923 | htab->tga_desc->is_func = 1; | |
7924 | } | |
a7f2871e AM |
7925 | } |
7926 | } | |
7927 | } | |
7928 | } | |
7c9cf415 AM |
7929 | else if (htab->params->tls_get_addr_opt < 0) |
7930 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7931 | } |
9e7028aa AM |
7932 | |
7933 | if (htab->tga_desc_fd != NULL | |
7934 | && htab->params->tls_get_addr_opt | |
7935 | && htab->params->no_tls_get_addr_regsave == -1) | |
7936 | htab->params->no_tls_get_addr_regsave = 0; | |
7937 | ||
0a1b45a2 | 7938 | return true; |
3a71aa26 | 7939 | } |
8387904d | 7940 | |
3a71aa26 | 7941 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
9e7028aa | 7942 | any of HASH1, HASH2, HASH3, or HASH4. */ |
8387904d | 7943 | |
0a1b45a2 | 7944 | static bool |
30845f11 AM |
7945 | branch_reloc_hash_match (bfd *ibfd, |
7946 | Elf_Internal_Rela *rel, | |
7947 | struct ppc_link_hash_entry *hash1, | |
7948 | struct ppc_link_hash_entry *hash2, | |
7949 | struct ppc_link_hash_entry *hash3, | |
7950 | struct ppc_link_hash_entry *hash4) | |
3a71aa26 AM |
7951 | { |
7952 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7953 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7954 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7955 | ||
e054468f | 7956 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7957 | { |
3a71aa26 AM |
7958 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7959 | struct elf_link_hash_entry *h; | |
8387904d | 7960 | |
3a71aa26 | 7961 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7962 | h = elf_follow_link (h); |
30845f11 AM |
7963 | if (h == elf_hash_entry (hash1) |
7964 | || h == elf_hash_entry (hash2) | |
7965 | || h == elf_hash_entry (hash3) | |
7966 | || h == elf_hash_entry (hash4)) | |
0a1b45a2 | 7967 | return true; |
a48ebf4d | 7968 | } |
0a1b45a2 | 7969 | return false; |
951fd09b | 7970 | } |
411e1bfb | 7971 | |
951fd09b AM |
7972 | /* Run through all the TLS relocs looking for optimization |
7973 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7974 | a preliminary section layout so that we know the TLS segment | |
7975 | offsets. We can't optimize earlier because some optimizations need | |
7976 | to know the tp offset, and we need to optimize before allocating | |
7977 | dynamic relocations. */ | |
7978 | ||
0a1b45a2 | 7979 | bool |
33c0ec9d | 7980 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7981 | { |
7982 | bfd *ibfd; | |
7983 | asection *sec; | |
7984 | struct ppc_link_hash_table *htab; | |
663a1470 | 7985 | unsigned char *toc_ref; |
102890f0 | 7986 | int pass; |
951fd09b | 7987 | |
3cbc1e5e | 7988 | if (!bfd_link_executable (info)) |
0a1b45a2 | 7989 | return true; |
411e1bfb | 7990 | |
951fd09b | 7991 | htab = ppc_hash_table (info); |
4dfe6ac6 | 7992 | if (htab == NULL) |
0a1b45a2 | 7993 | return false; |
4dfe6ac6 | 7994 | |
252dcdf4 AM |
7995 | htab->do_tls_opt = 1; |
7996 | ||
663a1470 AM |
7997 | /* Make two passes over the relocs. On the first pass, mark toc |
7998 | entries involved with tls relocs, and check that tls relocs | |
7999 | involved in setting up a tls_get_addr call are indeed followed by | |
8000 | such a call. If they are not, we can't do any tls optimization. | |
8001 | On the second pass twiddle tls_mask flags to notify | |
8002 | relocate_section that optimization can be done, and adjust got | |
8003 | and plt refcounts. */ | |
8004 | toc_ref = NULL; | |
8005 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8006 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8007 | { |
8008 | Elf_Internal_Sym *locsyms = NULL; | |
8009 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8010 | ||
102890f0 AM |
8011 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8012 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8013 | { | |
8014 | Elf_Internal_Rela *relstart, *rel, *relend; | |
0a1b45a2 | 8015 | bool found_tls_get_addr_arg = 0; |
411e1bfb | 8016 | |
102890f0 AM |
8017 | /* Read the relocations. */ |
8018 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8019 | info->keep_memory); | |
8020 | if (relstart == NULL) | |
2915c55b JK |
8021 | { |
8022 | free (toc_ref); | |
0a1b45a2 | 8023 | return false; |
2915c55b | 8024 | } |
411e1bfb | 8025 | |
102890f0 AM |
8026 | relend = relstart + sec->reloc_count; |
8027 | for (rel = relstart; rel < relend; rel++) | |
8028 | { | |
8029 | enum elf_ppc64_reloc_type r_type; | |
8030 | unsigned long r_symndx; | |
8031 | struct elf_link_hash_entry *h; | |
8032 | Elf_Internal_Sym *sym; | |
8033 | asection *sym_sec; | |
f961d9dd | 8034 | unsigned char *tls_mask; |
46e9995a | 8035 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 | 8036 | bfd_vma value; |
0a1b45a2 | 8037 | bool ok_tprel, is_local; |
102890f0 AM |
8038 | long toc_ref_index = 0; |
8039 | int expecting_tls_get_addr = 0; | |
0a1b45a2 | 8040 | bool ret = false; |
411e1bfb | 8041 | |
102890f0 AM |
8042 | r_symndx = ELF64_R_SYM (rel->r_info); |
8043 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8044 | r_symndx, ibfd)) | |
8045 | { | |
8046 | err_free_rel: | |
8047 | if (elf_section_data (sec)->relocs != relstart) | |
8048 | free (relstart); | |
c9594989 AM |
8049 | free (toc_ref); |
8050 | if (elf_symtab_hdr (ibfd).contents | |
8051 | != (unsigned char *) locsyms) | |
102890f0 | 8052 | free (locsyms); |
663a1470 | 8053 | return ret; |
102890f0 | 8054 | } |
411e1bfb | 8055 | |
102890f0 AM |
8056 | if (h != NULL) |
8057 | { | |
766bc656 AM |
8058 | if (h->root.type == bfd_link_hash_defined |
8059 | || h->root.type == bfd_link_hash_defweak) | |
8060 | value = h->root.u.def.value; | |
8061 | else if (h->root.type == bfd_link_hash_undefweak) | |
8062 | value = 0; | |
8063 | else | |
663a1470 AM |
8064 | { |
8065 | found_tls_get_addr_arg = 0; | |
8066 | continue; | |
8067 | } | |
102890f0 AM |
8068 | } |
8069 | else | |
8070 | /* Symbols referenced by TLS relocs must be of type | |
8071 | STT_TLS. So no need for .opd local sym adjust. */ | |
8072 | value = sym->st_value; | |
8073 | ||
0a1b45a2 | 8074 | ok_tprel = false; |
f749f26e AM |
8075 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
8076 | if (is_local) | |
102890f0 | 8077 | { |
766bc656 AM |
8078 | if (h != NULL |
8079 | && h->root.type == bfd_link_hash_undefweak) | |
0a1b45a2 | 8080 | ok_tprel = true; |
c27b8c2a AM |
8081 | else if (sym_sec != NULL |
8082 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8083 | { |
8084 | value += sym_sec->output_offset; | |
8085 | value += sym_sec->output_section->vma; | |
0b147428 | 8086 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
8087 | /* Note that even though the prefix insns |
8088 | allow a 1<<33 offset we use the same test | |
8089 | as for addis;addi. There may be a mix of | |
8090 | pcrel and non-pcrel code and the decision | |
8091 | to optimise is per symbol, not per TLS | |
8092 | sequence. */ | |
0b147428 | 8093 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 8094 | } |
102890f0 | 8095 | } |
951fd09b | 8096 | |
102890f0 | 8097 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8098 | /* If this section has old-style __tls_get_addr calls |
8099 | without marker relocs, then check that each | |
8100 | __tls_get_addr call reloc is preceded by a reloc | |
8101 | that conceivably belongs to the __tls_get_addr arg | |
8102 | setup insn. If we don't find matching arg setup | |
8103 | relocs, don't do any tls optimization. */ | |
8104 | if (pass == 0 | |
9737e8af | 8105 | && sec->nomark_tls_get_addr |
663a1470 | 8106 | && h != NULL |
ed7007c1 | 8107 | && is_tls_get_addr (h, htab) |
663a1470 AM |
8108 | && !found_tls_get_addr_arg |
8109 | && is_branch_reloc (r_type)) | |
8110 | { | |
25f53a85 | 8111 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8112 | "TLS optimization disabled\n"), |
8113 | ibfd, sec, rel->r_offset); | |
0a1b45a2 | 8114 | ret = true; |
663a1470 AM |
8115 | goto err_free_rel; |
8116 | } | |
8117 | ||
8118 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8119 | switch (r_type) |
8120 | { | |
8121 | case R_PPC64_GOT_TLSLD16: | |
8122 | case R_PPC64_GOT_TLSLD16_LO: | |
87c69f97 | 8123 | case R_PPC64_GOT_TLSLD_PCREL34: |
102890f0 | 8124 | expecting_tls_get_addr = 1; |
663a1470 | 8125 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8126 | /* Fall through. */ |
102890f0 AM |
8127 | |
8128 | case R_PPC64_GOT_TLSLD16_HI: | |
8129 | case R_PPC64_GOT_TLSLD16_HA: | |
8130 | /* These relocs should never be against a symbol | |
8131 | defined in a shared lib. Leave them alone if | |
8132 | that turns out to be the case. */ | |
8133 | if (!is_local) | |
8134 | continue; | |
411e1bfb | 8135 | |
102890f0 | 8136 | /* LD -> LE */ |
411e1bfb | 8137 | tls_set = 0; |
102890f0 AM |
8138 | tls_clear = TLS_LD; |
8139 | tls_type = TLS_TLS | TLS_LD; | |
8140 | break; | |
411e1bfb | 8141 | |
102890f0 AM |
8142 | case R_PPC64_GOT_TLSGD16: |
8143 | case R_PPC64_GOT_TLSGD16_LO: | |
87c69f97 | 8144 | case R_PPC64_GOT_TLSGD_PCREL34: |
102890f0 | 8145 | expecting_tls_get_addr = 1; |
663a1470 | 8146 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8147 | /* Fall through. */ |
102890f0 AM |
8148 | |
8149 | case R_PPC64_GOT_TLSGD16_HI: | |
8150 | case R_PPC64_GOT_TLSGD16_HA: | |
8151 | if (ok_tprel) | |
8152 | /* GD -> LE */ | |
411e1bfb | 8153 | tls_set = 0; |
102890f0 AM |
8154 | else |
8155 | /* GD -> IE */ | |
b00a0a86 | 8156 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
8157 | tls_clear = TLS_GD; |
8158 | tls_type = TLS_TLS | TLS_GD; | |
8159 | break; | |
8160 | ||
87c69f97 | 8161 | case R_PPC64_GOT_TPREL_PCREL34: |
102890f0 AM |
8162 | case R_PPC64_GOT_TPREL16_DS: |
8163 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8164 | case R_PPC64_GOT_TPREL16_HI: | |
8165 | case R_PPC64_GOT_TPREL16_HA: | |
8166 | if (ok_tprel) | |
8167 | { | |
8168 | /* IE -> LE */ | |
8169 | tls_set = 0; | |
8170 | tls_clear = TLS_TPREL; | |
8171 | tls_type = TLS_TLS | TLS_TPREL; | |
8172 | break; | |
8173 | } | |
411e1bfb AM |
8174 | continue; |
8175 | ||
727fc41e | 8176 | case R_PPC64_TLSLD: |
7d04a20a AM |
8177 | if (!is_local) |
8178 | continue; | |
8179 | /* Fall through. */ | |
8180 | case R_PPC64_TLSGD: | |
23cedd1d AM |
8181 | if (rel + 1 < relend |
8182 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8183 | { | |
8184 | if (pass != 0 | |
2cdcc330 | 8185 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
8186 | != R_PPC64_PLTSEQ) |
8187 | && (ELF64_R_TYPE (rel[1].r_info) | |
8188 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
8189 | { |
8190 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8191 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8192 | r_symndx, ibfd)) |
23cedd1d AM |
8193 | goto err_free_rel; |
8194 | if (h != NULL) | |
8195 | { | |
8196 | struct plt_entry *ent = NULL; | |
8197 | ||
8198 | for (ent = h->plt.plist; | |
8199 | ent != NULL; | |
8200 | ent = ent->next) | |
8201 | if (ent->addend == rel[1].r_addend) | |
8202 | break; | |
8203 | ||
8204 | if (ent != NULL | |
8205 | && ent->plt.refcount > 0) | |
8206 | ent->plt.refcount -= 1; | |
8207 | } | |
8208 | } | |
8209 | continue; | |
8210 | } | |
663a1470 | 8211 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8212 | /* Fall through. */ |
663a1470 AM |
8213 | |
8214 | case R_PPC64_TLS: | |
8215 | case R_PPC64_TOC16: | |
8216 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8217 | if (sym_sec == NULL || sym_sec != toc) |
8218 | continue; | |
8219 | ||
8220 | /* Mark this toc entry as referenced by a TLS | |
8221 | code sequence. We can do that now in the | |
8222 | case of R_PPC64_TLS, and after checking for | |
8223 | tls_get_addr for the TOC16 relocs. */ | |
8224 | if (toc_ref == NULL) | |
2cdcc330 AM |
8225 | toc_ref |
8226 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8227 | if (toc_ref == NULL) |
8228 | goto err_free_rel; | |
8229 | ||
102890f0 AM |
8230 | if (h != NULL) |
8231 | value = h->root.u.def.value; | |
8232 | else | |
8233 | value = sym->st_value; | |
8234 | value += rel->r_addend; | |
73242275 AM |
8235 | if (value % 8 != 0) |
8236 | continue; | |
8237 | BFD_ASSERT (value < toc->size | |
8238 | && toc->output_offset % 8 == 0); | |
663a1470 | 8239 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8240 | if (r_type == R_PPC64_TLS |
8241 | || r_type == R_PPC64_TLSGD | |
8242 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8243 | { |
8244 | toc_ref[toc_ref_index] = 1; | |
8245 | continue; | |
8246 | } | |
8247 | ||
8248 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8249 | continue; | |
8250 | ||
8251 | tls_set = 0; | |
8252 | tls_clear = 0; | |
8253 | expecting_tls_get_addr = 2; | |
8254 | break; | |
8255 | ||
8256 | case R_PPC64_TPREL64: | |
8257 | if (pass == 0 | |
8258 | || sec != toc | |
8259 | || toc_ref == NULL | |
663a1470 | 8260 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8261 | continue; |
8262 | if (ok_tprel) | |
8263 | { | |
8264 | /* IE -> LE */ | |
8265 | tls_set = TLS_EXPLICIT; | |
8266 | tls_clear = TLS_TPREL; | |
8267 | break; | |
8268 | } | |
8269 | continue; | |
8270 | ||
8271 | case R_PPC64_DTPMOD64: | |
8272 | if (pass == 0 | |
8273 | || sec != toc | |
8274 | || toc_ref == NULL | |
663a1470 | 8275 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8276 | continue; |
8277 | if (rel + 1 < relend | |
8278 | && (rel[1].r_info | |
8279 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8280 | && rel[1].r_offset == rel->r_offset + 8) | |
8281 | { | |
8282 | if (ok_tprel) | |
8283 | /* GD -> LE */ | |
8284 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8285 | else | |
8286 | /* GD -> IE */ | |
b00a0a86 | 8287 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8288 | tls_clear = TLS_GD; |
8289 | } | |
8290 | else | |
8291 | { | |
8292 | if (!is_local) | |
8293 | continue; | |
8294 | ||
8295 | /* LD -> LE */ | |
8296 | tls_set = TLS_EXPLICIT; | |
8297 | tls_clear = TLS_LD; | |
8298 | } | |
8299 | break; | |
8300 | ||
252dcdf4 AM |
8301 | case R_PPC64_TPREL16_HA: |
8302 | if (pass == 0) | |
8303 | { | |
8304 | unsigned char buf[4]; | |
8305 | unsigned int insn; | |
8306 | bfd_vma off = rel->r_offset & ~3; | |
8307 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
8308 | off, 4)) | |
8309 | goto err_free_rel; | |
8310 | insn = bfd_get_32 (ibfd, buf); | |
8311 | /* addis rt,13,imm */ | |
8312 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
8313 | != ((15u << 26) | (13 << 16))) | |
8314 | { | |
8315 | /* xgettext:c-format */ | |
8316 | info->callbacks->minfo | |
8317 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8318 | ibfd, sec, off, "R_PPC64_TPREL16_HA", insn); | |
8319 | htab->do_tls_opt = 0; | |
8320 | } | |
8321 | } | |
8322 | continue; | |
8323 | ||
8324 | case R_PPC64_TPREL16_HI: | |
8325 | case R_PPC64_TPREL16_HIGH: | |
8326 | case R_PPC64_TPREL16_HIGHA: | |
8327 | case R_PPC64_TPREL16_HIGHER: | |
8328 | case R_PPC64_TPREL16_HIGHERA: | |
8329 | case R_PPC64_TPREL16_HIGHEST: | |
8330 | case R_PPC64_TPREL16_HIGHESTA: | |
8331 | /* These can all be used in sequences along with | |
8332 | TPREL16_LO or TPREL16_LO_DS in ways we aren't | |
8333 | able to verify easily. */ | |
8334 | htab->do_tls_opt = 0; | |
8335 | continue; | |
8336 | ||
102890f0 AM |
8337 | default: |
8338 | continue; | |
8339 | } | |
8340 | ||
8341 | if (pass == 0) | |
8342 | { | |
727fc41e | 8343 | if (!expecting_tls_get_addr |
9737e8af | 8344 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8345 | continue; |
8346 | ||
3a71aa26 AM |
8347 | if (rel + 1 < relend |
8348 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9e7028aa AM |
8349 | htab->tls_get_addr_fd, |
8350 | htab->tga_desc_fd, | |
3a71aa26 | 8351 | htab->tls_get_addr, |
9e7028aa | 8352 | htab->tga_desc)) |
102890f0 | 8353 | { |
3a71aa26 | 8354 | if (expecting_tls_get_addr == 2) |
102890f0 | 8355 | { |
3a71aa26 | 8356 | /* Check for toc tls entries. */ |
f961d9dd | 8357 | unsigned char *toc_tls; |
3a71aa26 AM |
8358 | int retval; |
8359 | ||
8360 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8361 | &locsyms, | |
8362 | rel, ibfd); | |
8363 | if (retval == 0) | |
8364 | goto err_free_rel; | |
663a1470 AM |
8365 | if (toc_tls != NULL) |
8366 | { | |
37da22e5 AM |
8367 | if ((*toc_tls & TLS_TLS) != 0 |
8368 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8369 | found_tls_get_addr_arg = 1; |
8370 | if (retval > 1) | |
8371 | toc_ref[toc_ref_index] = 1; | |
8372 | } | |
102890f0 | 8373 | } |
3a71aa26 | 8374 | continue; |
102890f0 AM |
8375 | } |
8376 | ||
102890f0 AM |
8377 | /* Uh oh, we didn't find the expected call. We |
8378 | could just mark this symbol to exclude it | |
8379 | from tls optimization but it's safer to skip | |
663a1470 | 8380 | the entire optimization. */ |
695344c0 | 8381 | /* xgettext:c-format */ |
25f53a85 | 8382 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8383 | "TLS optimization disabled\n"), |
8384 | ibfd, sec, rel->r_offset); | |
0a1b45a2 | 8385 | ret = true; |
663a1470 | 8386 | goto err_free_rel; |
102890f0 AM |
8387 | } |
8388 | ||
37da22e5 AM |
8389 | /* If we don't have old-style __tls_get_addr calls |
8390 | without TLSGD/TLSLD marker relocs, and we haven't | |
8391 | found a new-style __tls_get_addr call with a | |
8392 | marker for this symbol, then we either have a | |
8393 | broken object file or an -mlongcall style | |
8394 | indirect call to __tls_get_addr without a marker. | |
8395 | Disable optimization in this case. */ | |
8396 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8397 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8398 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8399 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8400 | != (TLS_TLS | TLS_MARK))) | |
8401 | continue; | |
8402 | ||
7d04a20a | 8403 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8404 | { |
23cedd1d AM |
8405 | struct plt_entry *ent = NULL; |
8406 | ||
9e7028aa AM |
8407 | if (htab->tls_get_addr_fd != NULL) |
8408 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8409 | ent != NULL; | |
8410 | ent = ent->next) | |
8411 | if (ent->addend == 0) | |
8412 | break; | |
8413 | ||
8414 | if (ent == NULL && htab->tga_desc_fd != NULL) | |
8415 | for (ent = htab->tga_desc_fd->elf.plt.plist; | |
8416 | ent != NULL; | |
8417 | ent = ent->next) | |
8418 | if (ent->addend == 0) | |
8419 | break; | |
8420 | ||
8421 | if (ent == NULL && htab->tls_get_addr != NULL) | |
23cedd1d AM |
8422 | for (ent = htab->tls_get_addr->elf.plt.plist; |
8423 | ent != NULL; | |
8424 | ent = ent->next) | |
8425 | if (ent->addend == 0) | |
102890f0 | 8426 | break; |
411e1bfb | 8427 | |
9e7028aa AM |
8428 | if (ent == NULL && htab->tga_desc != NULL) |
8429 | for (ent = htab->tga_desc->elf.plt.plist; | |
23cedd1d AM |
8430 | ent != NULL; |
8431 | ent = ent->next) | |
8432 | if (ent->addend == 0) | |
102890f0 | 8433 | break; |
23cedd1d AM |
8434 | |
8435 | if (ent != NULL | |
8436 | && ent->plt.refcount > 0) | |
8437 | ent->plt.refcount -= 1; | |
102890f0 | 8438 | } |
411e1bfb | 8439 | |
102890f0 | 8440 | if (tls_clear == 0) |
30038c59 AM |
8441 | continue; |
8442 | ||
102890f0 AM |
8443 | if ((tls_set & TLS_EXPLICIT) == 0) |
8444 | { | |
8445 | struct got_entry *ent; | |
411e1bfb | 8446 | |
102890f0 AM |
8447 | /* Adjust got entry for this reloc. */ |
8448 | if (h != NULL) | |
8449 | ent = h->got.glist; | |
8450 | else | |
8451 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8452 | |
102890f0 AM |
8453 | for (; ent != NULL; ent = ent->next) |
8454 | if (ent->addend == rel->r_addend | |
8455 | && ent->owner == ibfd | |
8456 | && ent->tls_type == tls_type) | |
8457 | break; | |
8458 | if (ent == NULL) | |
8459 | abort (); | |
411e1bfb | 8460 | |
102890f0 AM |
8461 | if (tls_set == 0) |
8462 | { | |
8463 | /* We managed to get rid of a got entry. */ | |
8464 | if (ent->got.refcount > 0) | |
8465 | ent->got.refcount -= 1; | |
8466 | } | |
8467 | } | |
8468 | else | |
8469 | { | |
8470 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8471 | we'll lose one or two dyn relocs. */ | |
8472 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8473 | NULL, h, sym)) |
0a1b45a2 | 8474 | return false; |
411e1bfb | 8475 | |
102890f0 AM |
8476 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8477 | { | |
8478 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8479 | NULL, h, sym)) |
0a1b45a2 | 8480 | return false; |
102890f0 AM |
8481 | } |
8482 | } | |
411e1bfb | 8483 | |
46e9995a | 8484 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8485 | *tls_mask &= ~tls_clear; |
8486 | } | |
8c1d1bb8 | 8487 | |
102890f0 AM |
8488 | if (elf_section_data (sec)->relocs != relstart) |
8489 | free (relstart); | |
8490 | } | |
411e1bfb | 8491 | |
663a1470 AM |
8492 | if (locsyms != NULL |
8493 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8494 | { | |
8495 | if (!info->keep_memory) | |
8496 | free (locsyms); | |
8497 | else | |
8498 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8499 | } | |
8500 | } | |
411e1bfb | 8501 | |
c9594989 | 8502 | free (toc_ref); |
0a1b45a2 | 8503 | return true; |
1e2f5b6e | 8504 | } |
b34976b6 | 8505 | |
c5614fa4 AM |
8506 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8507 | the values of any global symbols in a toc section that has been | |
8508 | edited. Globals in toc sections should be a rarity, so this function | |
8509 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8510 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8511 | |
8512 | struct adjust_toc_info | |
8513 | { | |
8514 | asection *toc; | |
8515 | unsigned long *skip; | |
0a1b45a2 | 8516 | bool global_toc_syms; |
c5614fa4 AM |
8517 | }; |
8518 | ||
ba761f19 AM |
8519 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8520 | ||
0a1b45a2 | 8521 | static bool |
c5614fa4 AM |
8522 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) |
8523 | { | |
8524 | struct ppc_link_hash_entry *eh; | |
8525 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8526 | unsigned long i; |
c5614fa4 | 8527 | |
c5614fa4 AM |
8528 | if (h->root.type != bfd_link_hash_defined |
8529 | && h->root.type != bfd_link_hash_defweak) | |
0a1b45a2 | 8530 | return true; |
c5614fa4 | 8531 | |
ed7007c1 | 8532 | eh = ppc_elf_hash_entry (h); |
c5614fa4 | 8533 | if (eh->adjust_done) |
0a1b45a2 | 8534 | return true; |
c5614fa4 AM |
8535 | |
8536 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8537 | { | |
854b41e7 AM |
8538 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8539 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8540 | else |
854b41e7 AM |
8541 | i = eh->elf.root.u.def.value >> 3; |
8542 | ||
ba761f19 | 8543 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8544 | { |
4eca0228 | 8545 | _bfd_error_handler |
854b41e7 AM |
8546 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8547 | do | |
8548 | ++i; | |
ba761f19 | 8549 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8550 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8551 | } |
854b41e7 AM |
8552 | |
8553 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8554 | eh->adjust_done = 1; |
8555 | } | |
8556 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
0a1b45a2 | 8557 | toc_inf->global_toc_syms = true; |
c5614fa4 | 8558 | |
0a1b45a2 | 8559 | return true; |
c5614fa4 AM |
8560 | } |
8561 | ||
39eeab25 AM |
8562 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8563 | on a _LO variety toc/got reloc. */ | |
560c8763 | 8564 | |
0a1b45a2 | 8565 | static bool |
39eeab25 | 8566 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8567 | { |
2365f8d7 AM |
8568 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8569 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8570 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8571 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8572 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8573 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8574 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8575 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8576 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8577 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8578 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8579 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8580 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8581 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8582 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8583 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8584 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8585 | /* Exclude lfqu by testing reloc. If relocs are ever |
8586 | defined for the reduced D field in psq_lu then those | |
8587 | will need testing too. */ | |
8588 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8589 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8590 | && (insn & 1) == 0) |
2365f8d7 AM |
8591 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8592 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8593 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8594 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8595 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8596 | && (insn & 1) == 0)); |
560c8763 AM |
8597 | } |
8598 | ||
4a421c53 AM |
8599 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8600 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8601 | load/store rt,off(ra) |
4a421c53 | 8602 | or |
d4b87b1e | 8603 | pla ra,symbol@pcrel |
dd9b12c2 | 8604 | load/store rt,off(ra) |
4a421c53 | 8605 | may be translated to |
dd9b12c2 | 8606 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8607 | nop. |
8608 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8609 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8610 | |
8611 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8612 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8613 | while *PINSN2 is the second instruction. */ |
8614 | ||
0a1b45a2 | 8615 | static bool |
dd9b12c2 | 8616 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8617 | { |
77486630 AM |
8618 | uint64_t insn1 = *pinsn1; |
8619 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8620 | bfd_signed_vma off; |
4a421c53 | 8621 | |
77486630 AM |
8622 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8623 | { | |
8624 | /* Check that regs match. */ | |
8625 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
0a1b45a2 | 8626 | return false; |
77486630 AM |
8627 | |
8628 | /* P8LS or PMLS form, non-pcrel. */ | |
8629 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
0a1b45a2 | 8630 | return false; |
77486630 AM |
8631 | |
8632 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8633 | *pinsn2 = PNOP; | |
8634 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8635 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
0a1b45a2 | 8636 | return true; |
77486630 AM |
8637 | } |
8638 | ||
8639 | insn2 >>= 32; | |
8640 | ||
4a421c53 | 8641 | /* Check that regs match. */ |
77486630 | 8642 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
0a1b45a2 | 8643 | return false; |
4a421c53 AM |
8644 | |
8645 | switch ((insn2 >> 26) & 63) | |
8646 | { | |
8647 | default: | |
0a1b45a2 | 8648 | return false; |
4a421c53 AM |
8649 | |
8650 | case 32: /* lwz */ | |
8651 | case 34: /* lbz */ | |
8652 | case 36: /* stw */ | |
8653 | case 38: /* stb */ | |
8654 | case 40: /* lhz */ | |
8655 | case 42: /* lha */ | |
8656 | case 44: /* sth */ | |
8657 | case 48: /* lfs */ | |
8658 | case 50: /* lfd */ | |
8659 | case 52: /* stfs */ | |
8660 | case 54: /* stfd */ | |
8661 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8662 | on the insn. */ |
77486630 | 8663 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8664 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8665 | off = insn2 & 0xffff; |
4a421c53 AM |
8666 | break; |
8667 | ||
8668 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8669 | if ((insn2 & 1) != 0) |
0a1b45a2 | 8670 | return false; |
77486630 | 8671 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8672 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8673 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8674 | off = insn2 & 0xfffc; |
4a421c53 AM |
8675 | break; |
8676 | ||
8677 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8678 | if ((insn2 & 3) < 2) |
0a1b45a2 | 8679 | return false; |
77486630 | 8680 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8681 | | ((40ULL | (insn2 & 3)) << 26) |
8682 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8683 | off = insn2 & 0xfffc; |
4a421c53 AM |
8684 | break; |
8685 | ||
8686 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8687 | if ((insn2 & 3) == 0) | |
0a1b45a2 | 8688 | return false; |
4a421c53 AM |
8689 | else if ((insn2 & 3) >= 2) |
8690 | { | |
77486630 | 8691 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8692 | | ((44ULL | (insn2 & 3)) << 26) |
8693 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8694 | off = insn2 & 0xfffc; |
4a421c53 AM |
8695 | } |
8696 | else | |
8697 | { | |
77486630 | 8698 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8699 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8700 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8701 | off = insn2 & 0xfff0; |
4a421c53 AM |
8702 | } |
8703 | break; | |
8704 | ||
8705 | case 56: /* lq */ | |
77486630 | 8706 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8707 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8708 | off = insn2 & 0xffff; |
4a421c53 AM |
8709 | break; |
8710 | ||
94ba9882 AM |
8711 | case 6: /* lxvp, stxvp */ |
8712 | if ((insn2 & 0xe) != 0) | |
0a1b45a2 | 8713 | return false; |
94ba9882 AM |
8714 | insn1 = ((1ULL << 58) | (1ULL << 52) |
8715 | | ((insn2 & 1) == 0 ? 58ULL << 26 : 62ULL << 26) | |
8716 | | (insn2 & (31ULL << 21))); | |
8717 | off = insn2 & 0xfff0; | |
8718 | break; | |
8719 | ||
4a421c53 | 8720 | case 62: /* std, stq */ |
dd9b12c2 | 8721 | if ((insn2 & 1) != 0) |
0a1b45a2 | 8722 | return false; |
77486630 | 8723 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8724 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8725 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8726 | off = insn2 & 0xfffc; |
4a421c53 AM |
8727 | break; |
8728 | } | |
8729 | ||
77486630 | 8730 | *pinsn1 = insn1; |
4a421c53 | 8731 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8732 | *poff = (off ^ 0x8000) - 0x8000; |
0a1b45a2 | 8733 | return true; |
4a421c53 AM |
8734 | } |
8735 | ||
c5614fa4 AM |
8736 | /* Examine all relocs referencing .toc sections in order to remove |
8737 | unused .toc entries. */ | |
8738 | ||
0a1b45a2 | 8739 | bool |
33c0ec9d | 8740 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8741 | { |
8742 | bfd *ibfd; | |
8743 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8744 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8745 | |
67f0cbdb | 8746 | htab->do_toc_opt = 1; |
0a1b45a2 | 8747 | toc_inf.global_toc_syms = true; |
c72f2fb2 | 8748 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8749 | { |
8750 | asection *toc, *sec; | |
8751 | Elf_Internal_Shdr *symtab_hdr; | |
8752 | Elf_Internal_Sym *local_syms; | |
425b145b | 8753 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8754 | unsigned long *skip, *drop; |
8755 | unsigned char *used; | |
8756 | unsigned char *keep, last, some_unused; | |
8757 | ||
854b41e7 AM |
8758 | if (!is_ppc64_elf (ibfd)) |
8759 | continue; | |
8760 | ||
c5614fa4 AM |
8761 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8762 | if (toc == NULL | |
92b7a70f | 8763 | || toc->size == 0 |
dbaa2011 AM |
8764 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8765 | || discarded_section (toc)) | |
c5614fa4 AM |
8766 | continue; |
8767 | ||
425b145b | 8768 | toc_relocs = NULL; |
c5614fa4 | 8769 | local_syms = NULL; |
0ffa91dd | 8770 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8771 | |
8772 | /* Look at sections dropped from the final link. */ | |
8773 | skip = NULL; | |
8774 | relstart = NULL; | |
8775 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8776 | { | |
8777 | if (sec->reloc_count == 0 | |
dbaa2011 | 8778 | || !discarded_section (sec) |
c5614fa4 AM |
8779 | || get_opd_info (sec) |
8780 | || (sec->flags & SEC_ALLOC) == 0 | |
8781 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8782 | continue; | |
8783 | ||
0a1b45a2 | 8784 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, false); |
c5614fa4 AM |
8785 | if (relstart == NULL) |
8786 | goto error_ret; | |
8787 | ||
8788 | /* Run through the relocs to see which toc entries might be | |
8789 | unused. */ | |
8790 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8791 | { | |
8792 | enum elf_ppc64_reloc_type r_type; | |
8793 | unsigned long r_symndx; | |
8794 | asection *sym_sec; | |
8795 | struct elf_link_hash_entry *h; | |
8796 | Elf_Internal_Sym *sym; | |
8797 | bfd_vma val; | |
8798 | ||
8799 | r_type = ELF64_R_TYPE (rel->r_info); | |
8800 | switch (r_type) | |
8801 | { | |
8802 | default: | |
8803 | continue; | |
8804 | ||
8805 | case R_PPC64_TOC16: | |
8806 | case R_PPC64_TOC16_LO: | |
8807 | case R_PPC64_TOC16_HI: | |
8808 | case R_PPC64_TOC16_HA: | |
8809 | case R_PPC64_TOC16_DS: | |
8810 | case R_PPC64_TOC16_LO_DS: | |
8811 | break; | |
8812 | } | |
8813 | ||
8814 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8815 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8816 | r_symndx, ibfd)) | |
8817 | goto error_ret; | |
8818 | ||
8819 | if (sym_sec != toc) | |
8820 | continue; | |
8821 | ||
8822 | if (h != NULL) | |
8823 | val = h->root.u.def.value; | |
8824 | else | |
8825 | val = sym->st_value; | |
8826 | val += rel->r_addend; | |
8827 | ||
8828 | if (val >= toc->size) | |
8829 | continue; | |
8830 | ||
8831 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8832 | If not, don't mark as unused. */ | |
8833 | if (val & 7) | |
8834 | continue; | |
8835 | ||
8836 | if (skip == NULL) | |
8837 | { | |
854b41e7 | 8838 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8839 | if (skip == NULL) |
8840 | goto error_ret; | |
8841 | } | |
8842 | ||
ba761f19 | 8843 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8844 | } |
8845 | ||
8846 | if (elf_section_data (sec)->relocs != relstart) | |
8847 | free (relstart); | |
8848 | } | |
8849 | ||
ba761f19 AM |
8850 | /* For largetoc loads of address constants, we can convert |
8851 | . addis rx,2,addr@got@ha | |
8852 | . ld ry,addr@got@l(rx) | |
8853 | to | |
8854 | . addis rx,2,addr@toc@ha | |
8855 | . addi ry,rx,addr@toc@l | |
8856 | when addr is within 2G of the toc pointer. This then means | |
8857 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8858 | |
ba761f19 AM |
8859 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8860 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8861 | && toc->reloc_count != 0) | |
8862 | { | |
8863 | /* Read toc relocs. */ | |
425b145b AM |
8864 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8865 | info->keep_memory); | |
8866 | if (toc_relocs == NULL) | |
ba761f19 AM |
8867 | goto error_ret; |
8868 | ||
425b145b | 8869 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8870 | { |
8871 | enum elf_ppc64_reloc_type r_type; | |
8872 | unsigned long r_symndx; | |
8873 | asection *sym_sec; | |
8874 | struct elf_link_hash_entry *h; | |
8875 | Elf_Internal_Sym *sym; | |
8876 | bfd_vma val, addr; | |
8877 | ||
8878 | r_type = ELF64_R_TYPE (rel->r_info); | |
8879 | if (r_type != R_PPC64_ADDR64) | |
8880 | continue; | |
8881 | ||
8882 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8883 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8884 | r_symndx, ibfd)) | |
8885 | goto error_ret; | |
8886 | ||
425b145b | 8887 | if (sym_sec == NULL |
c27b8c2a | 8888 | || sym_sec->output_section == NULL |
dbaa2011 | 8889 | || discarded_section (sym_sec)) |
425b145b AM |
8890 | continue; |
8891 | ||
afe397ea | 8892 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8893 | continue; |
8894 | ||
8895 | if (h != NULL) | |
bddc25c9 AM |
8896 | { |
8897 | if (h->type == STT_GNU_IFUNC) | |
8898 | continue; | |
8899 | val = h->root.u.def.value; | |
8900 | } | |
ba761f19 | 8901 | else |
bddc25c9 AM |
8902 | { |
8903 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8904 | continue; | |
8905 | val = sym->st_value; | |
8906 | } | |
ba761f19 AM |
8907 | val += rel->r_addend; |
8908 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8909 | ||
8910 | /* We don't yet know the exact toc pointer value, but we | |
8911 | know it will be somewhere in the toc section. Don't | |
8912 | optimize if the difference from any possible toc | |
8913 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8914 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8915 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8916 | continue; | |
8917 | ||
8918 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8919 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8920 | continue; | |
8921 | ||
8922 | if (skip == NULL) | |
8923 | { | |
8924 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8925 | if (skip == NULL) | |
8926 | goto error_ret; | |
8927 | } | |
8928 | ||
8929 | skip[rel->r_offset >> 3] | |
425b145b | 8930 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8931 | } |
ba761f19 AM |
8932 | } |
8933 | ||
c5614fa4 AM |
8934 | if (skip == NULL) |
8935 | continue; | |
8936 | ||
8937 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8938 | if (used == NULL) | |
8939 | { | |
8940 | error_ret: | |
c9594989 | 8941 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
c5614fa4 AM |
8942 | free (local_syms); |
8943 | if (sec != NULL | |
c5614fa4 AM |
8944 | && elf_section_data (sec)->relocs != relstart) |
8945 | free (relstart); | |
c9594989 | 8946 | if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 8947 | free (toc_relocs); |
c9594989 | 8948 | free (skip); |
0a1b45a2 | 8949 | return false; |
c5614fa4 AM |
8950 | } |
8951 | ||
30038c59 AM |
8952 | /* Now check all kept sections that might reference the toc. |
8953 | Check the toc itself last. */ | |
8954 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8955 | : ibfd->sections); | |
c5614fa4 | 8956 | sec != NULL; |
c5614fa4 | 8957 | sec = (sec == toc ? NULL |
c5614fa4 | 8958 | : sec->next == NULL ? toc |
30038c59 | 8959 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8960 | : sec->next)) |
8961 | { | |
8962 | int repeat; | |
8963 | ||
8964 | if (sec->reloc_count == 0 | |
dbaa2011 | 8965 | || discarded_section (sec) |
c5614fa4 AM |
8966 | || get_opd_info (sec) |
8967 | || (sec->flags & SEC_ALLOC) == 0 | |
8968 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8969 | continue; | |
8970 | ||
854b41e7 AM |
8971 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8972 | info->keep_memory); | |
c5614fa4 | 8973 | if (relstart == NULL) |
2915c55b JK |
8974 | { |
8975 | free (used); | |
8976 | goto error_ret; | |
8977 | } | |
c5614fa4 AM |
8978 | |
8979 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8980 | do |
d4f1ee75 AM |
8981 | { |
8982 | repeat = 0; | |
8983 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8984 | { | |
8985 | enum elf_ppc64_reloc_type r_type; | |
8986 | unsigned long r_symndx; | |
8987 | asection *sym_sec; | |
8988 | struct elf_link_hash_entry *h; | |
8989 | Elf_Internal_Sym *sym; | |
8990 | bfd_vma val; | |
98528052 | 8991 | |
d4f1ee75 | 8992 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
8993 | switch (r_type) |
8994 | { | |
8995 | case R_PPC64_TOC16: | |
8996 | case R_PPC64_TOC16_LO: | |
8997 | case R_PPC64_TOC16_HI: | |
8998 | case R_PPC64_TOC16_HA: | |
8999 | case R_PPC64_TOC16_DS: | |
9000 | case R_PPC64_TOC16_LO_DS: | |
9001 | /* In case we're taking addresses of toc entries. */ | |
9002 | case R_PPC64_ADDR64: | |
9003 | break; | |
c5614fa4 | 9004 | |
d4f1ee75 AM |
9005 | default: |
9006 | continue; | |
9007 | } | |
c5614fa4 | 9008 | |
d4f1ee75 AM |
9009 | r_symndx = ELF64_R_SYM (rel->r_info); |
9010 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9011 | r_symndx, ibfd)) | |
9012 | { | |
9013 | free (used); | |
9014 | goto error_ret; | |
9015 | } | |
c5614fa4 | 9016 | |
d4f1ee75 AM |
9017 | if (sym_sec != toc) |
9018 | continue; | |
c5614fa4 | 9019 | |
d4f1ee75 AM |
9020 | if (h != NULL) |
9021 | val = h->root.u.def.value; | |
9022 | else | |
9023 | val = sym->st_value; | |
9024 | val += rel->r_addend; | |
ba761f19 | 9025 | |
d4f1ee75 AM |
9026 | if (val >= toc->size) |
9027 | continue; | |
ba761f19 | 9028 | |
d4f1ee75 AM |
9029 | if ((skip[val >> 3] & can_optimize) != 0) |
9030 | { | |
9031 | bfd_vma off; | |
9032 | unsigned char opc; | |
9033 | ||
9034 | switch (r_type) | |
9035 | { | |
9036 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9037 | break; |
ba761f19 | 9038 | |
d4f1ee75 AM |
9039 | case R_PPC64_TOC16_LO_DS: |
9040 | off = rel->r_offset; | |
9041 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9042 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9043 | off, 1)) | |
9044 | { | |
9045 | free (used); | |
9046 | goto error_ret; | |
9047 | } | |
9048 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9049 | break; | |
1a0670f3 | 9050 | /* Fall through. */ |
ba761f19 | 9051 | |
d4f1ee75 AM |
9052 | default: |
9053 | /* Wrong sort of reloc, or not a ld. We may | |
9054 | as well clear ref_from_discarded too. */ | |
9055 | skip[val >> 3] = 0; | |
9056 | } | |
9057 | } | |
9058 | ||
9059 | if (sec != toc) | |
9060 | used[val >> 3] = 1; | |
9061 | /* For the toc section, we only mark as used if this | |
9062 | entry itself isn't unused. */ | |
9063 | else if ((used[rel->r_offset >> 3] | |
9064 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9065 | && !used[val >> 3]) | |
9066 | { | |
9067 | /* Do all the relocs again, to catch reference | |
9068 | chains. */ | |
9069 | repeat = 1; | |
9070 | used[val >> 3] = 1; | |
9071 | } | |
9072 | } | |
9073 | } | |
c5614fa4 | 9074 | while (repeat); |
854b41e7 AM |
9075 | |
9076 | if (elf_section_data (sec)->relocs != relstart) | |
9077 | free (relstart); | |
c5614fa4 AM |
9078 | } |
9079 | ||
9080 | /* Merge the used and skip arrays. Assume that TOC | |
9081 | doublewords not appearing as either used or unused belong | |
de194d85 | 9082 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9083 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9084 | drop < skip + (toc->size + 7) / 8; | |
9085 | ++drop, ++keep) | |
9086 | { | |
9087 | if (*keep) | |
9088 | { | |
ba761f19 AM |
9089 | *drop &= ~ref_from_discarded; |
9090 | if ((*drop & can_optimize) != 0) | |
9091 | some_unused = 1; | |
c5614fa4 AM |
9092 | last = 0; |
9093 | } | |
b140b010 | 9094 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9095 | { |
9096 | some_unused = 1; | |
ba761f19 | 9097 | last = ref_from_discarded; |
c5614fa4 AM |
9098 | } |
9099 | else | |
9100 | *drop = last; | |
9101 | } | |
9102 | ||
9103 | free (used); | |
9104 | ||
9105 | if (some_unused) | |
9106 | { | |
9107 | bfd_byte *contents, *src; | |
9108 | unsigned long off; | |
d62b3684 | 9109 | Elf_Internal_Sym *sym; |
0a1b45a2 | 9110 | bool local_toc_syms = false; |
c5614fa4 AM |
9111 | |
9112 | /* Shuffle the toc contents, and at the same time convert the | |
9113 | skip array from booleans into offsets. */ | |
9114 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9115 | goto error_ret; | |
9116 | ||
9117 | elf_section_data (toc)->this_hdr.contents = contents; | |
9118 | ||
9119 | for (src = contents, off = 0, drop = skip; | |
9120 | src < contents + toc->size; | |
9121 | src += 8, ++drop) | |
9122 | { | |
ba761f19 AM |
9123 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9124 | off += 8; | |
c5614fa4 AM |
9125 | else if (off != 0) |
9126 | { | |
9127 | *drop = off; | |
9128 | memcpy (src - off, src, 8); | |
9129 | } | |
9130 | } | |
854b41e7 | 9131 | *drop = off; |
c5614fa4 AM |
9132 | toc->rawsize = toc->size; |
9133 | toc->size = src - contents - off; | |
9134 | ||
ba761f19 AM |
9135 | /* Adjust addends for relocs against the toc section sym, |
9136 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9137 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9138 | { | |
9139 | if (sec->reloc_count == 0 | |
dbaa2011 | 9140 | || discarded_section (sec)) |
c5614fa4 AM |
9141 | continue; |
9142 | ||
9143 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9144 | info->keep_memory); |
c5614fa4 AM |
9145 | if (relstart == NULL) |
9146 | goto error_ret; | |
9147 | ||
9148 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9149 | { | |
9150 | enum elf_ppc64_reloc_type r_type; | |
9151 | unsigned long r_symndx; | |
9152 | asection *sym_sec; | |
9153 | struct elf_link_hash_entry *h; | |
854b41e7 | 9154 | bfd_vma val; |
c5614fa4 AM |
9155 | |
9156 | r_type = ELF64_R_TYPE (rel->r_info); | |
9157 | switch (r_type) | |
9158 | { | |
9159 | default: | |
9160 | continue; | |
9161 | ||
9162 | case R_PPC64_TOC16: | |
9163 | case R_PPC64_TOC16_LO: | |
9164 | case R_PPC64_TOC16_HI: | |
9165 | case R_PPC64_TOC16_HA: | |
9166 | case R_PPC64_TOC16_DS: | |
9167 | case R_PPC64_TOC16_LO_DS: | |
9168 | case R_PPC64_ADDR64: | |
9169 | break; | |
9170 | } | |
9171 | ||
9172 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9173 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9174 | r_symndx, ibfd)) | |
9175 | goto error_ret; | |
9176 | ||
ba761f19 | 9177 | if (sym_sec != toc) |
c5614fa4 AM |
9178 | continue; |
9179 | ||
ba761f19 AM |
9180 | if (h != NULL) |
9181 | val = h->root.u.def.value; | |
9182 | else | |
9183 | { | |
9184 | val = sym->st_value; | |
9185 | if (val != 0) | |
0a1b45a2 | 9186 | local_toc_syms = true; |
ba761f19 AM |
9187 | } |
9188 | ||
9189 | val += rel->r_addend; | |
854b41e7 AM |
9190 | |
9191 | if (val > toc->rawsize) | |
9192 | val = toc->rawsize; | |
ba761f19 AM |
9193 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9194 | continue; | |
9195 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9196 | { | |
9197 | Elf_Internal_Rela *tocrel | |
425b145b | 9198 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9199 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9200 | ||
9201 | switch (r_type) | |
9202 | { | |
9203 | case R_PPC64_TOC16_HA: | |
9204 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9205 | break; | |
9206 | ||
9207 | case R_PPC64_TOC16_LO_DS: | |
9208 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9209 | break; | |
9210 | ||
9211 | default: | |
28942f62 AM |
9212 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9213 | ppc_howto_init (); | |
b140b010 | 9214 | info->callbacks->einfo |
695344c0 | 9215 | /* xgettext:c-format */ |
174d0a74 | 9216 | (_("%H: %s references " |
b140b010 AM |
9217 | "optimized away TOC entry\n"), |
9218 | ibfd, sec, rel->r_offset, | |
9219 | ppc64_elf_howto_table[r_type]->name); | |
9220 | bfd_set_error (bfd_error_bad_value); | |
9221 | goto error_ret; | |
ba761f19 AM |
9222 | } |
9223 | rel->r_addend = tocrel->r_addend; | |
9224 | elf_section_data (sec)->relocs = relstart; | |
9225 | continue; | |
9226 | } | |
9227 | ||
9228 | if (h != NULL || sym->st_value != 0) | |
9229 | continue; | |
854b41e7 AM |
9230 | |
9231 | rel->r_addend -= skip[val >> 3]; | |
9232 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9233 | } |
854b41e7 AM |
9234 | |
9235 | if (elf_section_data (sec)->relocs != relstart) | |
9236 | free (relstart); | |
c5614fa4 AM |
9237 | } |
9238 | ||
9239 | /* We shouldn't have local or global symbols defined in the TOC, | |
9240 | but handle them anyway. */ | |
df22d223 AM |
9241 | if (local_syms != NULL) |
9242 | for (sym = local_syms; | |
9243 | sym < local_syms + symtab_hdr->sh_info; | |
9244 | ++sym) | |
9245 | if (sym->st_value != 0 | |
9246 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9247 | { | |
9248 | unsigned long i; | |
854b41e7 | 9249 | |
df22d223 AM |
9250 | if (sym->st_value > toc->rawsize) |
9251 | i = toc->rawsize >> 3; | |
9252 | else | |
9253 | i = sym->st_value >> 3; | |
854b41e7 | 9254 | |
df22d223 AM |
9255 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9256 | { | |
9257 | if (local_toc_syms) | |
4eca0228 | 9258 | _bfd_error_handler |
df22d223 AM |
9259 | (_("%s defined on removed toc entry"), |
9260 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9261 | do | |
9262 | ++i; | |
9263 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9264 | sym->st_value = (bfd_vma) i << 3; | |
9265 | } | |
d62b3684 | 9266 | |
df22d223 AM |
9267 | sym->st_value -= skip[i]; |
9268 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9269 | } | |
c5614fa4 | 9270 | |
854b41e7 | 9271 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9272 | if (toc_inf.global_toc_syms) |
9273 | { | |
9274 | toc_inf.toc = toc; | |
9275 | toc_inf.skip = skip; | |
0a1b45a2 | 9276 | toc_inf.global_toc_syms = false; |
c5614fa4 AM |
9277 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, |
9278 | &toc_inf); | |
9279 | } | |
854b41e7 AM |
9280 | |
9281 | if (toc->reloc_count != 0) | |
9282 | { | |
d4730f92 | 9283 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9284 | Elf_Internal_Rela *wrel; |
9285 | bfd_size_type sz; | |
9286 | ||
854b41e7 | 9287 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9288 | if (toc_relocs == NULL) |
9289 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9290 | info->keep_memory); | |
9291 | if (toc_relocs == NULL) | |
9292 | goto error_ret; | |
9293 | ||
425b145b AM |
9294 | wrel = toc_relocs; |
9295 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9296 | if ((skip[rel->r_offset >> 3] |
9297 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9298 | { |
9299 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9300 | wrel->r_info = rel->r_info; | |
9301 | wrel->r_addend = rel->r_addend; | |
9302 | ++wrel; | |
9303 | } | |
9304 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9305 | &local_syms, NULL, NULL)) | |
9306 | goto error_ret; | |
9307 | ||
425b145b AM |
9308 | elf_section_data (toc)->relocs = toc_relocs; |
9309 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9310 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9311 | sz = rel_hdr->sh_entsize; | |
9312 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9313 | } |
c5614fa4 | 9314 | } |
c9594989 | 9315 | else if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9316 | free (toc_relocs); |
c5614fa4 AM |
9317 | |
9318 | if (local_syms != NULL | |
9319 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9320 | { | |
9321 | if (!info->keep_memory) | |
9322 | free (local_syms); | |
9323 | else | |
9324 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9325 | } | |
9326 | free (skip); | |
9327 | } | |
9328 | ||
066f4018 | 9329 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9330 | a GOT relative or PC relative access, possibly reducing the |
9331 | number of GOT entries. */ | |
066f4018 AM |
9332 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9333 | { | |
9334 | asection *sec; | |
9335 | Elf_Internal_Shdr *symtab_hdr; | |
9336 | Elf_Internal_Sym *local_syms; | |
9337 | Elf_Internal_Rela *relstart, *rel; | |
9338 | bfd_vma got; | |
9339 | ||
9340 | if (!is_ppc64_elf (ibfd)) | |
9341 | continue; | |
9342 | ||
903b777d | 9343 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9344 | continue; |
9345 | ||
9346 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9347 | got = 0; |
9348 | if (sec != NULL) | |
9349 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9350 | |
9351 | local_syms = NULL; | |
9352 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9353 | ||
9354 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9355 | { | |
9356 | if (sec->reloc_count == 0 | |
903b777d | 9357 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9358 | || discarded_section (sec)) |
9359 | continue; | |
9360 | ||
9361 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9362 | info->keep_memory); | |
9363 | if (relstart == NULL) | |
9364 | { | |
9365 | got_error_ret: | |
c9594989 | 9366 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
066f4018 AM |
9367 | free (local_syms); |
9368 | if (sec != NULL | |
066f4018 AM |
9369 | && elf_section_data (sec)->relocs != relstart) |
9370 | free (relstart); | |
0a1b45a2 | 9371 | return false; |
066f4018 AM |
9372 | } |
9373 | ||
9374 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9375 | { | |
9376 | enum elf_ppc64_reloc_type r_type; | |
9377 | unsigned long r_symndx; | |
9378 | Elf_Internal_Sym *sym; | |
9379 | asection *sym_sec; | |
9380 | struct elf_link_hash_entry *h; | |
9381 | struct got_entry *ent; | |
133a1f60 | 9382 | bfd_vma val, pc; |
4a421c53 | 9383 | unsigned char buf[8]; |
066f4018 | 9384 | unsigned int insn; |
903b777d | 9385 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9386 | |
9387 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9388 | switch (r_type) |
9389 | { | |
9390 | default: | |
9391 | insn_check = no_check; | |
9392 | break; | |
9393 | ||
9394 | case R_PPC64_PLT16_HA: | |
9395 | case R_PPC64_GOT_TLSLD16_HA: | |
9396 | case R_PPC64_GOT_TLSGD16_HA: | |
9397 | case R_PPC64_GOT_TPREL16_HA: | |
9398 | case R_PPC64_GOT_DTPREL16_HA: | |
9399 | case R_PPC64_GOT16_HA: | |
9400 | case R_PPC64_TOC16_HA: | |
9401 | insn_check = check_ha; | |
9402 | break; | |
9403 | ||
9404 | case R_PPC64_PLT16_LO: | |
9405 | case R_PPC64_PLT16_LO_DS: | |
9406 | case R_PPC64_GOT_TLSLD16_LO: | |
9407 | case R_PPC64_GOT_TLSGD16_LO: | |
9408 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9409 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9410 | case R_PPC64_GOT16_LO: | |
9411 | case R_PPC64_GOT16_LO_DS: | |
9412 | case R_PPC64_TOC16_LO: | |
9413 | case R_PPC64_TOC16_LO_DS: | |
9414 | insn_check = check_lo; | |
9415 | break; | |
9416 | } | |
9417 | ||
9418 | if (insn_check != no_check) | |
9419 | { | |
9420 | bfd_vma off = rel->r_offset & ~3; | |
9421 | ||
9422 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9423 | goto got_error_ret; | |
9424 | ||
9425 | insn = bfd_get_32 (ibfd, buf); | |
9426 | if (insn_check == check_lo | |
9427 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9428 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9429 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9430 | { | |
9431 | char str[12]; | |
9432 | ||
9433 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9434 | sprintf (str, "%#08x", insn); | |
9435 | info->callbacks->einfo | |
9436 | /* xgettext:c-format */ | |
9437 | (_("%H: got/toc optimization is not supported for" | |
9438 | " %s instruction\n"), | |
9439 | ibfd, sec, rel->r_offset & ~3, str); | |
9440 | continue; | |
9441 | } | |
9442 | } | |
9443 | ||
066f4018 AM |
9444 | switch (r_type) |
9445 | { | |
bb22a418 AM |
9446 | /* Note that we don't delete GOT entries for |
9447 | R_PPC64_GOT16_DS since we'd need a lot more | |
9448 | analysis. For starters, the preliminary layout is | |
9449 | before the GOT, PLT, dynamic sections and stubs are | |
9450 | laid out. Then we'd need to allow for changes in | |
9451 | distance between sections caused by alignment. */ | |
066f4018 AM |
9452 | default: |
9453 | continue; | |
9454 | ||
066f4018 AM |
9455 | case R_PPC64_GOT16_HA: |
9456 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9457 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9458 | break; |
9459 | } | |
9460 | ||
9461 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9462 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9463 | r_symndx, ibfd)) | |
9464 | goto got_error_ret; | |
9465 | ||
6d5554a6 AM |
9466 | if (sym_sec == NULL |
9467 | || sym_sec->output_section == NULL | |
9468 | || discarded_section (sym_sec)) | |
9469 | continue; | |
9470 | ||
06507dab AM |
9471 | if ((h ? h->type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
9472 | continue; | |
9473 | ||
066f4018 AM |
9474 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
9475 | continue; | |
9476 | ||
9477 | if (h != NULL) | |
9478 | val = h->root.u.def.value; | |
9479 | else | |
9480 | val = sym->st_value; | |
133a1f60 | 9481 | val += rel->r_addend; |
066f4018 AM |
9482 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9483 | ||
bb22a418 AM |
9484 | /* Fudge factor to allow for the fact that the preliminary layout |
9485 | isn't exact. Reduce limits by this factor. */ | |
9486 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9487 | ||
066f4018 AM |
9488 | switch (r_type) |
9489 | { | |
9490 | default: | |
9491 | continue; | |
9492 | ||
066f4018 | 9493 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9494 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9495 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9496 | continue; |
9497 | ||
9498 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9499 | rel->r_offset & ~3, 4)) | |
9500 | goto got_error_ret; | |
9501 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9502 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9503 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9504 | continue; | |
9505 | break; | |
9506 | ||
9507 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9508 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9509 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9510 | continue; |
9511 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9512 | rel->r_offset & ~3, 4)) | |
9513 | goto got_error_ret; | |
9514 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9515 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9516 | continue; |
9517 | break; | |
4a421c53 AM |
9518 | |
9519 | case R_PPC64_GOT_PCREL34: | |
9520 | pc = rel->r_offset; | |
9521 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9522 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9523 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9524 | continue; |
9525 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9526 | rel->r_offset & ~3, 8)) | |
9527 | goto got_error_ret; | |
9528 | insn = bfd_get_32 (ibfd, buf); | |
9529 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9530 | continue; | |
9531 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9532 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9533 | continue; |
9534 | break; | |
066f4018 | 9535 | } |
bb22a418 | 9536 | #undef LIMIT_ADJUST |
066f4018 AM |
9537 | |
9538 | if (h != NULL) | |
9539 | ent = h->got.glist; | |
9540 | else | |
9541 | { | |
9542 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9543 | ent = local_got_ents[r_symndx]; | |
9544 | } | |
9545 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9546 | if (ent->addend == rel->r_addend |
066f4018 AM |
9547 | && ent->owner == ibfd |
9548 | && ent->tls_type == 0) | |
9549 | break; | |
9550 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9551 | ent->got.refcount -= 1; | |
9552 | } | |
9553 | ||
9554 | if (elf_section_data (sec)->relocs != relstart) | |
9555 | free (relstart); | |
9556 | } | |
9557 | ||
9558 | if (local_syms != NULL | |
9559 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9560 | { | |
9561 | if (!info->keep_memory) | |
9562 | free (local_syms); | |
9563 | else | |
9564 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9565 | } | |
9566 | } | |
9567 | ||
0a1b45a2 | 9568 | return true; |
c5614fa4 AM |
9569 | } |
9570 | ||
1bbe0902 AM |
9571 | /* Return true iff input section I references the TOC using |
9572 | instructions limited to +/-32k offsets. */ | |
9573 | ||
0a1b45a2 | 9574 | bool |
1bbe0902 AM |
9575 | ppc64_elf_has_small_toc_reloc (asection *i) |
9576 | { | |
9577 | return (is_ppc64_elf (i->owner) | |
9578 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9579 | } | |
9580 | ||
927be08e AM |
9581 | /* Allocate space for one GOT entry. */ |
9582 | ||
9583 | static void | |
9584 | allocate_got (struct elf_link_hash_entry *h, | |
9585 | struct bfd_link_info *info, | |
9586 | struct got_entry *gent) | |
9587 | { | |
9588 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ed7007c1 | 9589 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
927be08e AM |
9590 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) |
9591 | ? 16 : 8); | |
9592 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9593 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9594 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9595 | ||
9596 | gent->got.offset = got->size; | |
9597 | got->size += entsize; | |
9598 | ||
19e08130 | 9599 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9600 | { |
33e44f2e | 9601 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9602 | htab->got_reli_size += rentsize; |
927be08e | 9603 | } |
f15d0b54 | 9604 | else if (((bfd_link_pic (info) |
f749f26e | 9605 | && !(gent->tls_type != 0 |
f15d0b54 AM |
9606 | && bfd_link_executable (info) |
9607 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9608 | || (htab->elf.dynamic_sections_created |
9609 | && h->dynindx != -1 | |
9610 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9611 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9612 | { |
19e08130 | 9613 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9614 | relgot->size += rentsize; |
927be08e AM |
9615 | } |
9616 | } | |
9617 | ||
7865406b AM |
9618 | /* This function merges got entries in the same toc group. */ |
9619 | ||
9620 | static void | |
9621 | merge_got_entries (struct got_entry **pent) | |
9622 | { | |
9623 | struct got_entry *ent, *ent2; | |
9624 | ||
9625 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9626 | if (!ent->is_indirect) | |
9627 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9628 | if (!ent2->is_indirect | |
9629 | && ent2->addend == ent->addend | |
9630 | && ent2->tls_type == ent->tls_type | |
9631 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9632 | { | |
0a1b45a2 | 9633 | ent2->is_indirect = true; |
7865406b AM |
9634 | ent2->got.ent = ent; |
9635 | } | |
9636 | } | |
9637 | ||
46434633 | 9638 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 | 9639 | |
0a1b45a2 | 9640 | static bool |
46434633 AM |
9641 | ensure_undef_dynamic (struct bfd_link_info *info, |
9642 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9643 | { |
9644 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9645 | ||
9646 | if (htab->dynamic_sections_created | |
46434633 AM |
9647 | && ((info->dynamic_undefined_weak != 0 |
9648 | && h->root.type == bfd_link_hash_undefweak) | |
9649 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9650 | && h->dynindx == -1 |
9651 | && !h->forced_local | |
9652 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9653 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
0a1b45a2 | 9654 | return true; |
f0158f44 AM |
9655 | } |
9656 | ||
30845f11 AM |
9657 | /* Choose whether to use htab->iplt or htab->pltlocal rather than the |
9658 | usual htab->elf.splt section for a PLT entry. */ | |
9659 | ||
9660 | static inline | |
0a1b45a2 | 9661 | bool use_local_plt (struct bfd_link_info *info, |
30845f11 AM |
9662 | struct elf_link_hash_entry *h) |
9663 | { | |
9664 | return (h == NULL | |
9665 | || h->dynindx == -1 | |
9666 | || !elf_hash_table (info)->dynamic_sections_created); | |
9667 | } | |
9668 | ||
65f38f15 AM |
9669 | /* Allocate space in .plt, .got and associated reloc sections for |
9670 | dynamic relocs. */ | |
5bd4f169 | 9671 | |
0a1b45a2 | 9672 | static bool |
4ce794b7 | 9673 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9674 | { |
65f38f15 AM |
9675 | struct bfd_link_info *info; |
9676 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9677 | asection *s; |
65f38f15 | 9678 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9679 | struct got_entry **pgent, *gent; |
5bd4f169 | 9680 | |
e92d460e | 9681 | if (h->root.type == bfd_link_hash_indirect) |
0a1b45a2 | 9682 | return true; |
5bd4f169 | 9683 | |
65f38f15 AM |
9684 | info = (struct bfd_link_info *) inf; |
9685 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 9686 | if (htab == NULL) |
0a1b45a2 | 9687 | return false; |
5bd4f169 | 9688 | |
ed7007c1 | 9689 | eh = ppc_elf_hash_entry (h); |
951fd09b AM |
9690 | /* Run through the TLS GD got entries first if we're changing them |
9691 | to TPREL. */ | |
b00a0a86 | 9692 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9693 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9694 | if (gent->got.refcount > 0 | |
9695 | && (gent->tls_type & TLS_GD) != 0) | |
9696 | { | |
9697 | /* This was a GD entry that has been converted to TPREL. If | |
9698 | there happens to be a TPREL entry we can use that one. */ | |
9699 | struct got_entry *ent; | |
9700 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9701 | if (ent->got.refcount > 0 | |
9702 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9703 | && ent->addend == gent->addend |
9704 | && ent->owner == gent->owner) | |
951fd09b AM |
9705 | { |
9706 | gent->got.refcount = 0; | |
9707 | break; | |
9708 | } | |
9709 | ||
9710 | /* If not, then we'll be using our own TPREL entry. */ | |
9711 | if (gent->got.refcount != 0) | |
9712 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9713 | } | |
9714 | ||
7865406b AM |
9715 | /* Remove any list entry that won't generate a word in the GOT before |
9716 | we call merge_got_entries. Otherwise we risk merging to empty | |
9717 | entries. */ | |
0b8bcf0d AM |
9718 | pgent = &h->got.glist; |
9719 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9720 | if (gent->got.refcount > 0) |
7865406b AM |
9721 | { |
9722 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9723 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9724 | { |
9725 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9726 | *pgent = gent->next; | |
9727 | } | |
9728 | else | |
9729 | pgent = &gent->next; | |
9730 | } | |
9731 | else | |
9732 | *pgent = gent->next; | |
9733 | ||
9734 | if (!htab->do_multi_toc) | |
9735 | merge_got_entries (&h->got.glist); | |
9736 | ||
9737 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9738 | if (!gent->is_indirect) | |
411e1bfb | 9739 | { |
ec73ddcd AM |
9740 | /* Ensure we catch all the cases where this symbol should |
9741 | be made dynamic. */ | |
46434633 | 9742 | if (!ensure_undef_dynamic (info, h)) |
0a1b45a2 | 9743 | return false; |
65f38f15 | 9744 | |
0c8d6e5c | 9745 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9746 | abort (); |
0ffa91dd | 9747 | |
927be08e | 9748 | allocate_got (h, info, gent); |
411e1bfb | 9749 | } |
65f38f15 | 9750 | |
954b63d4 AM |
9751 | /* If no dynamic sections we can't have dynamic relocs, except for |
9752 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9753 | if (!htab->elf.dynamic_sections_created |
9754 | && h->type != STT_GNU_IFUNC) | |
190eb1dd | 9755 | h->dyn_relocs = NULL; |
8a2058b5 | 9756 | |
529fe20e AM |
9757 | /* Discard relocs on undefined symbols that must be local. */ |
9758 | else if (h->root.type == bfd_link_hash_undefined | |
9759 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
190eb1dd | 9760 | h->dyn_relocs = NULL; |
529fe20e | 9761 | |
954b63d4 AM |
9762 | /* Also discard relocs on undefined weak syms with non-default |
9763 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9764 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 9765 | h->dyn_relocs = NULL; |
954b63d4 | 9766 | |
190eb1dd | 9767 | if (h->dyn_relocs != NULL) |
65f38f15 | 9768 | { |
8a2058b5 AM |
9769 | struct elf_dyn_relocs *p, **pp; |
9770 | ||
57e7d118 AM |
9771 | /* In the shared -Bsymbolic case, discard space allocated for |
9772 | dynamic pc-relative relocs against symbols which turn out to | |
9773 | be defined in regular objects. For the normal shared case, | |
9774 | discard space for relocs that have become local due to symbol | |
9775 | visibility changes. */ | |
57e7d118 | 9776 | if (bfd_link_pic (info)) |
65f38f15 | 9777 | { |
57e7d118 AM |
9778 | /* Relocs that use pc_count are those that appear on a call |
9779 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9780 | can be generated via assembly. We want calls to | |
9781 | protected symbols to resolve directly to the function | |
9782 | rather than going via the plt. If people want function | |
9783 | pointer comparisons to work as expected then they should | |
9784 | avoid writing weird assembly. */ | |
9785 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9786 | { | |
190eb1dd | 9787 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
57e7d118 AM |
9788 | { |
9789 | p->count -= p->pc_count; | |
9790 | p->pc_count = 0; | |
9791 | if (p->count == 0) | |
9792 | *pp = p->next; | |
9793 | else | |
9794 | pp = &p->next; | |
9795 | } | |
9796 | } | |
65f38f15 | 9797 | |
190eb1dd | 9798 | if (h->dyn_relocs != NULL) |
5bd4f169 | 9799 | { |
ec73ddcd AM |
9800 | /* Ensure we catch all the cases where this symbol |
9801 | should be made dynamic. */ | |
46434633 | 9802 | if (!ensure_undef_dynamic (info, h)) |
0a1b45a2 | 9803 | return false; |
5bd4f169 | 9804 | } |
65f38f15 | 9805 | } |
ec73ddcd AM |
9806 | |
9807 | /* For a fixed position executable, discard space for | |
9808 | relocs against symbols which are not dynamic. */ | |
9809 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9810 | { |
529fe20e AM |
9811 | if (h->dynamic_adjusted |
9812 | && !h->def_regular | |
9813 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9814 | { |
ec73ddcd AM |
9815 | /* Ensure we catch all the cases where this symbol |
9816 | should be made dynamic. */ | |
46434633 | 9817 | if (!ensure_undef_dynamic (info, h)) |
0a1b45a2 | 9818 | return false; |
dfbb6ac9 | 9819 | |
ec73ddcd | 9820 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 | 9821 | if (h->dynindx == -1) |
190eb1dd | 9822 | h->dyn_relocs = NULL; |
f0158f44 AM |
9823 | } |
9824 | else | |
190eb1dd | 9825 | h->dyn_relocs = NULL; |
57e7d118 AM |
9826 | } |
9827 | ||
9828 | /* Finally, allocate space. */ | |
190eb1dd | 9829 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
57e7d118 AM |
9830 | { |
9831 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9832 | if (eh->elf.type == STT_GNU_IFUNC) | |
9833 | sreloc = htab->elf.irelplt; | |
9834 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9835 | } |
65f38f15 | 9836 | } |
57e7d118 | 9837 | |
2d7ad24e AM |
9838 | /* We might need a PLT entry when the symbol |
9839 | a) is dynamic, or | |
9840 | b) is an ifunc, or | |
9841 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9842 | d) has plt16 relocs and we are linking statically. */ | |
9843 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9844 | || h->type == STT_GNU_IFUNC | |
9845 | || (h->needs_plt && h->dynamic_adjusted) | |
9846 | || (h->needs_plt | |
9847 | && h->def_regular | |
9848 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9849 | && !htab->can_convert_all_inline_plt |
ed7007c1 | 9850 | && (ppc_elf_hash_entry (h)->tls_mask |
2d7ad24e | 9851 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) |
65f38f15 | 9852 | { |
57e7d118 | 9853 | struct plt_entry *pent; |
0a1b45a2 | 9854 | bool doneone = false; |
57e7d118 AM |
9855 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9856 | if (pent->plt.refcount > 0) | |
9857 | { | |
30845f11 | 9858 | if (use_local_plt (info, h)) |
57e7d118 | 9859 | { |
2d7ad24e AM |
9860 | if (h->type == STT_GNU_IFUNC) |
9861 | { | |
9862 | s = htab->elf.iplt; | |
9863 | pent->plt.offset = s->size; | |
9864 | s->size += PLT_ENTRY_SIZE (htab); | |
9865 | s = htab->elf.irelplt; | |
9866 | } | |
9867 | else | |
9868 | { | |
9869 | s = htab->pltlocal; | |
9870 | pent->plt.offset = s->size; | |
9871 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9872 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9873 | } | |
57e7d118 AM |
9874 | } |
9875 | else | |
9876 | { | |
9877 | /* If this is the first .plt entry, make room for the special | |
9878 | first entry. */ | |
9879 | s = htab->elf.splt; | |
9880 | if (s->size == 0) | |
9881 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9882 | |
57e7d118 | 9883 | pent->plt.offset = s->size; |
65f38f15 | 9884 | |
57e7d118 AM |
9885 | /* Make room for this entry. */ |
9886 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9887 | |
57e7d118 AM |
9888 | /* Make room for the .glink code. */ |
9889 | s = htab->glink; | |
9890 | if (s->size == 0) | |
9e390558 | 9891 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9892 | if (htab->opd_abi) |
9893 | { | |
9894 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9895 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9896 | s->size += 4; |
9897 | s->size += 2*4; | |
9898 | } | |
9899 | else | |
9900 | s->size += 4; | |
65f38f15 | 9901 | |
57e7d118 AM |
9902 | /* We also need to make an entry in the .rela.plt section. */ |
9903 | s = htab->elf.srelplt; | |
9904 | } | |
2d7ad24e AM |
9905 | if (s != NULL) |
9906 | s->size += sizeof (Elf64_External_Rela); | |
0a1b45a2 | 9907 | doneone = true; |
57e7d118 AM |
9908 | } |
9909 | else | |
9910 | pent->plt.offset = (bfd_vma) -1; | |
9911 | if (!doneone) | |
9912 | { | |
9913 | h->plt.plist = NULL; | |
9914 | h->needs_plt = 0; | |
9915 | } | |
65f38f15 | 9916 | } |
57e7d118 | 9917 | else |
65f38f15 | 9918 | { |
57e7d118 AM |
9919 | h->plt.plist = NULL; |
9920 | h->needs_plt = 0; | |
65f38f15 AM |
9921 | } |
9922 | ||
0a1b45a2 | 9923 | return true; |
65f38f15 AM |
9924 | } |
9925 | ||
9e390558 AM |
9926 | #define PPC_LO(v) ((v) & 0xffff) |
9927 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9928 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9929 | #define D34(v) \ |
9930 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9931 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9932 | |
a345bc8d AM |
9933 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9934 | to set up space for global entry stubs. These are put in glink, | |
9935 | after the branch table. */ | |
65f38f15 | 9936 | |
0a1b45a2 | 9937 | static bool |
a345bc8d | 9938 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9939 | { |
a345bc8d AM |
9940 | struct bfd_link_info *info; |
9941 | struct ppc_link_hash_table *htab; | |
9942 | struct plt_entry *pent; | |
9e390558 | 9943 | asection *s, *plt; |
65f38f15 | 9944 | |
a345bc8d | 9945 | if (h->root.type == bfd_link_hash_indirect) |
0a1b45a2 | 9946 | return true; |
65f38f15 | 9947 | |
a345bc8d | 9948 | if (!h->pointer_equality_needed) |
0a1b45a2 | 9949 | return true; |
65f38f15 | 9950 | |
a345bc8d | 9951 | if (h->def_regular) |
0a1b45a2 | 9952 | return true; |
65f38f15 | 9953 | |
a345bc8d AM |
9954 | info = inf; |
9955 | htab = ppc_hash_table (info); | |
9956 | if (htab == NULL) | |
0a1b45a2 | 9957 | return false; |
a345bc8d | 9958 | |
9e390558 AM |
9959 | s = htab->global_entry; |
9960 | plt = htab->elf.splt; | |
a345bc8d AM |
9961 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9962 | if (pent->plt.offset != (bfd_vma) -1 | |
9963 | && pent->addend == 0) | |
9964 | { | |
afe397ea AM |
9965 | /* For ELFv2, if this symbol is not defined in a regular file |
9966 | and we are not generating a shared library or pie, then we | |
9967 | need to define the symbol in the executable on a call stub. | |
9968 | This is to avoid text relocations. */ | |
9e390558 AM |
9969 | bfd_vma off, stub_align, stub_off, stub_size; |
9970 | unsigned int align_power; | |
9971 | ||
9972 | stub_size = 16; | |
9973 | stub_off = s->size; | |
9974 | if (htab->params->plt_stub_align >= 0) | |
9975 | align_power = htab->params->plt_stub_align; | |
9976 | else | |
9977 | align_power = -htab->params->plt_stub_align; | |
9978 | /* Setting section alignment is delayed until we know it is | |
9979 | non-empty. Otherwise the .text output section will be | |
9980 | aligned at least to plt_stub_align even when no global | |
9981 | entry stubs are needed. */ | |
9982 | if (s->alignment_power < align_power) | |
9983 | s->alignment_power = align_power; | |
9984 | stub_align = (bfd_vma) 1 << align_power; | |
9985 | if (htab->params->plt_stub_align >= 0 | |
9986 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9987 | - (stub_off & -stub_align)) | |
9988 | > ((stub_size - 1) & -stub_align))) | |
9989 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9990 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9991 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9992 | /* Note that for --plt-stub-align negative we have a possible | |
9993 | dependency between stub offset and size. Break that | |
9994 | dependency by assuming the max stub size when calculating | |
9995 | the stub offset. */ | |
9996 | if (PPC_HA (off) == 0) | |
9997 | stub_size -= 4; | |
8a2058b5 | 9998 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9999 | h->root.u.def.section = s; |
9e390558 AM |
10000 | h->root.u.def.value = stub_off; |
10001 | s->size = stub_off + stub_size; | |
a345bc8d AM |
10002 | break; |
10003 | } | |
0a1b45a2 | 10004 | return true; |
a345bc8d AM |
10005 | } |
10006 | ||
65f38f15 AM |
10007 | /* Set the sizes of the dynamic sections. */ |
10008 | ||
0a1b45a2 | 10009 | static bool |
ee67d69a | 10010 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 10011 | struct bfd_link_info *info) |
65f38f15 AM |
10012 | { |
10013 | struct ppc_link_hash_table *htab; | |
10014 | bfd *dynobj; | |
10015 | asection *s; | |
0a1b45a2 | 10016 | bool relocs; |
65f38f15 | 10017 | bfd *ibfd; |
7865406b | 10018 | struct got_entry *first_tlsld; |
65f38f15 AM |
10019 | |
10020 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 10021 | if (htab == NULL) |
0a1b45a2 | 10022 | return false; |
4dfe6ac6 | 10023 | |
65f38f15 AM |
10024 | dynobj = htab->elf.dynobj; |
10025 | if (dynobj == NULL) | |
10026 | abort (); | |
10027 | ||
10028 | if (htab->elf.dynamic_sections_created) | |
10029 | { | |
10030 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10031 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10032 | { |
3d4d4302 | 10033 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10034 | if (s == NULL) |
10035 | abort (); | |
eea6121a | 10036 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10037 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10038 | } | |
10039 | } | |
10040 | ||
10041 | /* Set up .got offsets for local syms, and space for local dynamic | |
10042 | relocs. */ | |
c72f2fb2 | 10043 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10044 | { |
411e1bfb AM |
10045 | struct got_entry **lgot_ents; |
10046 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10047 | struct plt_entry **local_plt; |
10048 | struct plt_entry **end_local_plt; | |
f961d9dd | 10049 | unsigned char *lgot_masks; |
65f38f15 AM |
10050 | bfd_size_type locsymcount; |
10051 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10052 | |
0c8d6e5c | 10053 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10054 | continue; |
10055 | ||
10056 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10057 | { | |
19e08130 | 10058 | struct ppc_dyn_relocs *p; |
65f38f15 | 10059 | |
6edfbbad | 10060 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10061 | { |
ec338859 AM |
10062 | if (!bfd_is_abs_section (p->sec) |
10063 | && bfd_is_abs_section (p->sec->output_section)) | |
10064 | { | |
10065 | /* Input section has been discarded, either because | |
10066 | it is a copy of a linkonce section or due to | |
10067 | linker script /DISCARD/, so we'll be discarding | |
10068 | the relocs too. */ | |
10069 | } | |
248866a8 | 10070 | else if (p->count != 0) |
ec338859 | 10071 | { |
19e08130 AM |
10072 | asection *srel = elf_section_data (p->sec)->sreloc; |
10073 | if (p->ifunc) | |
33e44f2e | 10074 | srel = htab->elf.irelplt; |
eea6121a | 10075 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10076 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10077 | info->flags |= DF_TEXTREL; | |
ec338859 | 10078 | } |
65f38f15 AM |
10079 | } |
10080 | } | |
10081 | ||
411e1bfb AM |
10082 | lgot_ents = elf_local_got_ents (ibfd); |
10083 | if (!lgot_ents) | |
65f38f15 AM |
10084 | continue; |
10085 | ||
0ffa91dd | 10086 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10087 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10088 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10089 | local_plt = (struct plt_entry **) end_lgot_ents; |
10090 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10091 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10092 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10093 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10094 | { |
0b8bcf0d | 10095 | struct got_entry **pent, *ent; |
411e1bfb | 10096 | |
0b8bcf0d AM |
10097 | pent = lgot_ents; |
10098 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10099 | if (ent->got.refcount > 0) |
10100 | { | |
e7b938ca | 10101 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10102 | { |
927be08e | 10103 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10104 | *pent = ent->next; |
411e1bfb AM |
10105 | } |
10106 | else | |
10107 | { | |
19e08130 AM |
10108 | unsigned int ent_size = 8; |
10109 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10110 | ||
eea6121a | 10111 | ent->got.offset = s->size; |
e7b938ca | 10112 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10113 | { |
19e08130 AM |
10114 | ent_size *= 2; |
10115 | rel_size *= 2; | |
10116 | } | |
10117 | s->size += ent_size; | |
37da22e5 | 10118 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10119 | { |
33e44f2e | 10120 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10121 | htab->got_reli_size += rel_size; |
10122 | } | |
93370e8e AM |
10123 | else if (bfd_link_pic (info) |
10124 | && !(ent->tls_type != 0 | |
10125 | && bfd_link_executable (info))) | |
19e08130 AM |
10126 | { |
10127 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10128 | srel->size += rel_size; | |
927be08e | 10129 | } |
0b8bcf0d | 10130 | pent = &ent->next; |
411e1bfb AM |
10131 | } |
10132 | } | |
10133 | else | |
0b8bcf0d | 10134 | *pent = ent->next; |
65f38f15 | 10135 | } |
e054468f | 10136 | |
2d7ad24e AM |
10137 | /* Allocate space for plt calls to local syms. */ |
10138 | lgot_masks = (unsigned char *) end_local_plt; | |
10139 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10140 | { |
10141 | struct plt_entry *ent; | |
10142 | ||
10143 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10144 | if (ent->plt.refcount > 0) | |
10145 | { | |
2d7ad24e AM |
10146 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10147 | { | |
10148 | s = htab->elf.iplt; | |
10149 | ent->plt.offset = s->size; | |
10150 | s->size += PLT_ENTRY_SIZE (htab); | |
10151 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10152 | } | |
3e04d765 AM |
10153 | else if (htab->can_convert_all_inline_plt |
10154 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10155 | ent->plt.offset = (bfd_vma) -1; |
10156 | else | |
10157 | { | |
10158 | s = htab->pltlocal; | |
10159 | ent->plt.offset = s->size; | |
10160 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10161 | if (bfd_link_pic (info)) | |
10162 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10163 | } | |
e054468f AM |
10164 | } |
10165 | else | |
10166 | ent->plt.offset = (bfd_vma) -1; | |
10167 | } | |
65f38f15 AM |
10168 | } |
10169 | ||
10170 | /* Allocate global sym .plt and .got entries, and space for global | |
10171 | sym dynamic relocs. */ | |
4ce794b7 | 10172 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10173 | |
0e1862bb | 10174 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10175 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10176 | |
7865406b | 10177 | first_tlsld = NULL; |
c72f2fb2 | 10178 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10179 | { |
7865406b AM |
10180 | struct got_entry *ent; |
10181 | ||
0c8d6e5c | 10182 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10183 | continue; |
10184 | ||
7865406b AM |
10185 | ent = ppc64_tlsld_got (ibfd); |
10186 | if (ent->got.refcount > 0) | |
102890f0 | 10187 | { |
7865406b | 10188 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10189 | { |
0a1b45a2 | 10190 | ent->is_indirect = true; |
7865406b AM |
10191 | ent->got.ent = first_tlsld; |
10192 | } | |
10193 | else | |
10194 | { | |
10195 | if (first_tlsld == NULL) | |
10196 | first_tlsld = ent; | |
10197 | s = ppc64_elf_tdata (ibfd)->got; | |
10198 | ent->got.offset = s->size; | |
10199 | ent->owner = ibfd; | |
10200 | s->size += 16; | |
f749f26e | 10201 | if (bfd_link_dll (info)) |
7865406b AM |
10202 | { |
10203 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10204 | srel->size += sizeof (Elf64_External_Rela); | |
10205 | } | |
102890f0 AM |
10206 | } |
10207 | } | |
10208 | else | |
7865406b | 10209 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10210 | } |
10211 | ||
65f38f15 AM |
10212 | /* We now have determined the sizes of the various dynamic sections. |
10213 | Allocate memory for them. */ | |
0a1b45a2 | 10214 | relocs = false; |
65f38f15 AM |
10215 | for (s = dynobj->sections; s != NULL; s = s->next) |
10216 | { | |
10217 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10218 | continue; | |
10219 | ||
4ce794b7 | 10220 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10221 | /* These haven't been allocated yet; don't strip. */ |
10222 | continue; | |
33e44f2e AM |
10223 | else if (s == htab->elf.sgot |
10224 | || s == htab->elf.splt | |
10225 | || s == htab->elf.iplt | |
2d7ad24e | 10226 | || s == htab->pltlocal |
c456f082 | 10227 | || s == htab->glink |
9e390558 | 10228 | || s == htab->global_entry |
5474d94f AM |
10229 | || s == htab->elf.sdynbss |
10230 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10231 | { |
10232 | /* Strip this section if we don't need it; see the | |
10233 | comment below. */ | |
5bd4f169 | 10234 | } |
58d180e8 AM |
10235 | else if (s == htab->glink_eh_frame) |
10236 | { | |
10237 | if (!bfd_is_abs_section (s->output_section)) | |
10238 | /* Not sized yet. */ | |
10239 | continue; | |
10240 | } | |
08dedd66 | 10241 | else if (startswith (s->name, ".rela")) |
5bd4f169 | 10242 | { |
c456f082 | 10243 | if (s->size != 0) |
5bd4f169 | 10244 | { |
33e44f2e | 10245 | if (s != htab->elf.srelplt) |
0a1b45a2 | 10246 | relocs = true; |
5bd4f169 AM |
10247 | |
10248 | /* We use the reloc_count field as a counter if we need | |
10249 | to copy relocs into the output file. */ | |
10250 | s->reloc_count = 0; | |
10251 | } | |
10252 | } | |
65f38f15 | 10253 | else |
5bd4f169 AM |
10254 | { |
10255 | /* It's not one of our sections, so don't allocate space. */ | |
10256 | continue; | |
10257 | } | |
10258 | ||
eea6121a | 10259 | if (s->size == 0) |
5bd4f169 | 10260 | { |
c456f082 AM |
10261 | /* If we don't need this section, strip it from the |
10262 | output file. This is mostly to handle .rela.bss and | |
10263 | .rela.plt. We must create both sections in | |
10264 | create_dynamic_sections, because they must be created | |
10265 | before the linker maps input sections to output | |
10266 | sections. The linker does that before | |
10267 | adjust_dynamic_symbol is called, and it is that | |
10268 | function which decides whether anything needs to go | |
10269 | into these sections. */ | |
8423293d | 10270 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10271 | continue; |
10272 | } | |
10273 | ||
06bcf541 AM |
10274 | if (bfd_is_abs_section (s->output_section)) |
10275 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10276 | s->name); | |
10277 | ||
c456f082 | 10278 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10279 | continue; |
10280 | ||
65f38f15 AM |
10281 | /* Allocate memory for the section contents. We use bfd_zalloc |
10282 | here in case unused entries are not reclaimed before the | |
10283 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10284 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10285 | sections instead of garbage. | |
10286 | We also rely on the section contents being zero when writing | |
5474d94f | 10287 | the GOT and .dynrelro. */ |
eea6121a | 10288 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10289 | if (s->contents == NULL) |
0a1b45a2 | 10290 | return false; |
5bd4f169 AM |
10291 | } |
10292 | ||
c72f2fb2 | 10293 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10294 | { |
0c8d6e5c | 10295 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10296 | continue; |
10297 | ||
e717da7e | 10298 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10299 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10300 | { |
eea6121a | 10301 | if (s->size == 0) |
8423293d | 10302 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10303 | else |
10304 | { | |
eea6121a | 10305 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e | 10306 | if (s->contents == NULL) |
0a1b45a2 | 10307 | return false; |
e717da7e AM |
10308 | } |
10309 | } | |
10310 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10311 | if (s != NULL) | |
10312 | { | |
eea6121a | 10313 | if (s->size == 0) |
8423293d | 10314 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10315 | else |
10316 | { | |
eea6121a | 10317 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e | 10318 | if (s->contents == NULL) |
0a1b45a2 AM |
10319 | return false; |
10320 | relocs = true; | |
e717da7e AM |
10321 | s->reloc_count = 0; |
10322 | } | |
10323 | } | |
10324 | } | |
10325 | ||
e86ce104 | 10326 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10327 | { |
0a1b45a2 | 10328 | bool tls_opt; |
e8910a83 | 10329 | |
5bd4f169 AM |
10330 | /* Add some entries to the .dynamic section. We fill in the |
10331 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10332 | must add the entries now so that we get the correct size for | |
10333 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10334 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10335 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10336 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10337 | |
0e1862bb | 10338 | if (bfd_link_executable (info)) |
5bd4f169 | 10339 | { |
dc810e39 | 10340 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
0a1b45a2 | 10341 | return false; |
5bd4f169 AM |
10342 | } |
10343 | ||
33e44f2e | 10344 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10345 | { |
dc810e39 AM |
10346 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10347 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10348 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10349 | || !add_dynamic_entry (DT_JMPREL, 0) |
10350 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
0a1b45a2 | 10351 | return false; |
5bd4f169 AM |
10352 | } |
10353 | ||
ee67d69a | 10354 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10355 | { |
10356 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10357 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
0a1b45a2 | 10358 | return false; |
19397422 AM |
10359 | } |
10360 | ||
7c9cf415 | 10361 | tls_opt = (htab->params->tls_get_addr_opt |
9e7028aa AM |
10362 | && ((htab->tls_get_addr_fd != NULL |
10363 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
10364 | || (htab->tga_desc_fd != NULL | |
10365 | && htab->tga_desc_fd->elf.plt.plist != NULL))); | |
e8910a83 AM |
10366 | if (tls_opt || !htab->opd_abi) |
10367 | { | |
10368 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
0a1b45a2 | 10369 | return false; |
e8910a83 | 10370 | } |
a7f2871e | 10371 | |
5bd4f169 AM |
10372 | if (relocs) |
10373 | { | |
dc810e39 AM |
10374 | if (!add_dynamic_entry (DT_RELA, 0) |
10375 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10376 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
0a1b45a2 | 10377 | return false; |
5bd4f169 | 10378 | |
65f38f15 AM |
10379 | /* If any dynamic relocs apply to a read-only section, |
10380 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10381 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
10382 | elf_link_hash_traverse (&htab->elf, |
10383 | _bfd_elf_maybe_set_textrel, info); | |
5bd4f169 | 10384 | |
65f38f15 | 10385 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10386 | { |
65f38f15 | 10387 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
0a1b45a2 | 10388 | return false; |
5bd4f169 | 10389 | } |
5bd4f169 | 10390 | } |
5bd4f169 | 10391 | } |
65f38f15 | 10392 | #undef add_dynamic_entry |
5bd4f169 | 10393 | |
0a1b45a2 | 10394 | return true; |
5bd4f169 AM |
10395 | } |
10396 | ||
a345bc8d AM |
10397 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10398 | ||
0a1b45a2 | 10399 | static bool |
a345bc8d AM |
10400 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) |
10401 | { | |
10402 | if (h->plt.plist != NULL | |
10403 | && !h->def_regular | |
10404 | && !h->pointer_equality_needed) | |
0a1b45a2 | 10405 | return false; |
a345bc8d AM |
10406 | |
10407 | return _bfd_elf_hash_symbol (h); | |
10408 | } | |
10409 | ||
721956f4 | 10410 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10411 | |
4ce794b7 AM |
10412 | static inline enum ppc_stub_type |
10413 | ppc_type_of_stub (asection *input_sec, | |
10414 | const Elf_Internal_Rela *rel, | |
10415 | struct ppc_link_hash_entry **hash, | |
e054468f | 10416 | struct plt_entry **plt_ent, |
6911b7dc AM |
10417 | bfd_vma destination, |
10418 | unsigned long local_off) | |
5bd4f169 | 10419 | { |
721956f4 AM |
10420 | struct ppc_link_hash_entry *h = *hash; |
10421 | bfd_vma location; | |
10422 | bfd_vma branch_offset; | |
10423 | bfd_vma max_branch_offset; | |
4ce794b7 | 10424 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10425 | |
721956f4 AM |
10426 | if (h != NULL) |
10427 | { | |
e054468f | 10428 | struct plt_entry *ent; |
7fe2b9a6 | 10429 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10430 | if (h->oh != NULL |
10431 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10432 | { |
10433 | fdh = ppc_follow_link (h->oh); | |
10434 | *hash = fdh; | |
10435 | } | |
8387904d | 10436 | |
e054468f AM |
10437 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10438 | if (ent->addend == rel->r_addend | |
10439 | && ent->plt.offset != (bfd_vma) -1) | |
10440 | { | |
e054468f AM |
10441 | *plt_ent = ent; |
10442 | return ppc_stub_plt_call; | |
10443 | } | |
5bd4f169 | 10444 | |
7fe2b9a6 AM |
10445 | /* Here, we know we don't have a plt entry. If we don't have a |
10446 | either a defined function descriptor or a defined entry symbol | |
10447 | in a regular object file, then it is pointless trying to make | |
10448 | any other type of stub. */ | |
854b41e7 AM |
10449 | if (!is_static_defined (&fdh->elf) |
10450 | && !is_static_defined (&h->elf)) | |
721956f4 | 10451 | return ppc_stub_none; |
5d1634d7 | 10452 | } |
e054468f AM |
10453 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10454 | { | |
10455 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10456 | struct plt_entry **local_plt = (struct plt_entry **) | |
10457 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10458 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10459 | ||
10460 | if (local_plt[r_symndx] != NULL) | |
10461 | { | |
10462 | struct plt_entry *ent; | |
10463 | ||
10464 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10465 | if (ent->addend == rel->r_addend | |
10466 | && ent->plt.offset != (bfd_vma) -1) | |
10467 | { | |
10468 | *plt_ent = ent; | |
10469 | return ppc_stub_plt_call; | |
10470 | } | |
10471 | } | |
10472 | } | |
5d1634d7 | 10473 | |
721956f4 AM |
10474 | /* Determine where the call point is. */ |
10475 | location = (input_sec->output_offset | |
10476 | + input_sec->output_section->vma | |
10477 | + rel->r_offset); | |
5d1634d7 | 10478 | |
721956f4 AM |
10479 | branch_offset = destination - location; |
10480 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10481 | |
721956f4 AM |
10482 | /* Determine if a long branch stub is needed. */ |
10483 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10484 | if (r_type == R_PPC64_REL14 |
10485 | || r_type == R_PPC64_REL14_BRTAKEN | |
10486 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10487 | max_branch_offset = 1 << 15; |
5d1634d7 | 10488 | |
6911b7dc | 10489 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10490 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10491 | is needed later. */ | |
10492 | return ppc_stub_long_branch; | |
5d1634d7 | 10493 | |
721956f4 | 10494 | return ppc_stub_none; |
5d1634d7 AM |
10495 | } |
10496 | ||
f891966f AM |
10497 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10498 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10499 | . mflr %r12 | |
10500 | . bcl 20,31,1f | |
10501 | .1: mflr %r11 | |
10502 | . mtlr %r12 | |
05d0e962 | 10503 | . lis %r12,xxx-1b@highest |
f891966f | 10504 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10505 | . sldi %r12,%r12,32 |
f891966f | 10506 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10507 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10508 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10509 | |
10510 | static bfd_byte * | |
0a1b45a2 | 10511 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bool load) |
05d0e962 | 10512 | { |
f891966f AM |
10513 | bfd_put_32 (abfd, MFLR_R12, p); |
10514 | p += 4; | |
10515 | bfd_put_32 (abfd, BCL_20_31, p); | |
10516 | p += 4; | |
10517 | bfd_put_32 (abfd, MFLR_R11, p); | |
10518 | p += 4; | |
10519 | bfd_put_32 (abfd, MTLR_R12, p); | |
10520 | p += 4; | |
05d0e962 AM |
10521 | if (off + 0x8000 < 0x10000) |
10522 | { | |
10523 | if (load) | |
10524 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10525 | else | |
10526 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10527 | p += 4; | |
10528 | } | |
10529 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10530 | { | |
10531 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10532 | p += 4; | |
10533 | if (load) | |
10534 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10535 | else | |
10536 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10537 | p += 4; | |
10538 | } | |
10539 | else | |
10540 | { | |
10541 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10542 | { | |
10543 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10544 | p += 4; | |
10545 | } | |
10546 | else | |
10547 | { | |
10548 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10549 | p += 4; | |
10550 | if (((off >> 32) & 0xffff) != 0) | |
10551 | { | |
10552 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10553 | p += 4; | |
10554 | } | |
10555 | } | |
10556 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10557 | { | |
10558 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10559 | p += 4; | |
10560 | } | |
10561 | if (PPC_HI (off) != 0) | |
10562 | { | |
10563 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10564 | p += 4; | |
10565 | } | |
10566 | if (PPC_LO (off) != 0) | |
10567 | { | |
10568 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10569 | p += 4; | |
10570 | } | |
10571 | if (load) | |
10572 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10573 | else | |
10574 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10575 | p += 4; | |
10576 | } | |
10577 | return p; | |
10578 | } | |
10579 | ||
10580 | static unsigned int | |
10581 | size_offset (bfd_vma off) | |
10582 | { | |
10583 | unsigned int size; | |
10584 | if (off + 0x8000 < 0x10000) | |
10585 | size = 4; | |
10586 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10587 | size = 8; | |
10588 | else | |
10589 | { | |
10590 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10591 | size = 4; | |
10592 | else | |
10593 | { | |
10594 | size = 4; | |
10595 | if (((off >> 32) & 0xffff) != 0) | |
10596 | size += 4; | |
10597 | } | |
10598 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10599 | size += 4; | |
10600 | if (PPC_HI (off) != 0) | |
10601 | size += 4; | |
10602 | if (PPC_LO (off) != 0) | |
10603 | size += 4; | |
10604 | size += 4; | |
10605 | } | |
f891966f | 10606 | return size + 16; |
05d0e962 AM |
10607 | } |
10608 | ||
3d58e1fc AM |
10609 | static unsigned int |
10610 | num_relocs_for_offset (bfd_vma off) | |
10611 | { | |
10612 | unsigned int num_rel; | |
10613 | if (off + 0x8000 < 0x10000) | |
10614 | num_rel = 1; | |
10615 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10616 | num_rel = 2; | |
10617 | else | |
10618 | { | |
10619 | num_rel = 1; | |
10620 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10621 | && ((off >> 32) & 0xffff) != 0) | |
10622 | num_rel += 1; | |
10623 | if (PPC_HI (off) != 0) | |
10624 | num_rel += 1; | |
10625 | if (PPC_LO (off) != 0) | |
10626 | num_rel += 1; | |
10627 | } | |
10628 | return num_rel; | |
10629 | } | |
10630 | ||
10631 | static Elf_Internal_Rela * | |
10632 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10633 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10634 | { | |
10635 | bfd_vma relative_targ = targ - (roff - 8); | |
10636 | if (bfd_big_endian (info->output_bfd)) | |
10637 | roff += 2; | |
10638 | r->r_offset = roff; | |
10639 | r->r_addend = relative_targ + roff; | |
10640 | if (off + 0x8000 < 0x10000) | |
10641 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10642 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10643 | { | |
10644 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10645 | ++r; | |
10646 | roff += 4; | |
10647 | r->r_offset = roff; | |
10648 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10649 | r->r_addend = relative_targ + roff; | |
10650 | } | |
10651 | else | |
10652 | { | |
10653 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10654 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10655 | else | |
10656 | { | |
10657 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10658 | if (((off >> 32) & 0xffff) != 0) | |
10659 | { | |
10660 | ++r; | |
10661 | roff += 4; | |
10662 | r->r_offset = roff; | |
10663 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10664 | r->r_addend = relative_targ + roff; | |
10665 | } | |
10666 | } | |
10667 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10668 | roff += 4; | |
10669 | if (PPC_HI (off) != 0) | |
10670 | { | |
10671 | ++r; | |
10672 | roff += 4; | |
10673 | r->r_offset = roff; | |
10674 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10675 | r->r_addend = relative_targ + roff; | |
10676 | } | |
10677 | if (PPC_LO (off) != 0) | |
10678 | { | |
10679 | ++r; | |
10680 | roff += 4; | |
10681 | r->r_offset = roff; | |
10682 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10683 | r->r_addend = relative_targ + roff; | |
10684 | } | |
10685 | } | |
10686 | return r; | |
10687 | } | |
10688 | ||
04bdff6a | 10689 | static bfd_byte * |
7c1f4227 | 10690 | build_power10_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, |
0a1b45a2 | 10691 | bool load) |
04bdff6a AM |
10692 | { |
10693 | uint64_t insn; | |
10694 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10695 | { | |
10696 | off -= odd; | |
10697 | if (odd) | |
10698 | { | |
10699 | bfd_put_32 (abfd, NOP, p); | |
10700 | p += 4; | |
10701 | } | |
10702 | if (load) | |
10703 | insn = PLD_R12_PC; | |
10704 | else | |
10705 | insn = PADDI_R12_PC; | |
10706 | insn |= D34 (off); | |
10707 | bfd_put_32 (abfd, insn >> 32, p); | |
10708 | p += 4; | |
10709 | bfd_put_32 (abfd, insn, p); | |
10710 | } | |
10711 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10712 | for li is -0x8000, which when shifted by 34 and added gives a | |
10713 | minimum value of -0x2000200000000. The maximum value is | |
10714 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10715 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10716 | { | |
10717 | off -= 8 - odd; | |
10718 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10719 | p += 4; | |
10720 | if (!odd) | |
10721 | { | |
10722 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10723 | p += 4; | |
10724 | } | |
10725 | insn = PADDI_R12_PC | D34 (off); | |
10726 | bfd_put_32 (abfd, insn >> 32, p); | |
10727 | p += 4; | |
10728 | bfd_put_32 (abfd, insn, p); | |
10729 | p += 4; | |
10730 | if (odd) | |
10731 | { | |
10732 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10733 | p += 4; | |
10734 | } | |
10735 | if (load) | |
10736 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10737 | else | |
10738 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10739 | } | |
10740 | else | |
10741 | { | |
10742 | off -= odd + 8; | |
10743 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10744 | p += 4; | |
10745 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10746 | p += 4; | |
10747 | if (odd) | |
10748 | { | |
10749 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10750 | p += 4; | |
10751 | } | |
10752 | insn = PADDI_R12_PC | D34 (off); | |
10753 | bfd_put_32 (abfd, insn >> 32, p); | |
10754 | p += 4; | |
10755 | bfd_put_32 (abfd, insn, p); | |
10756 | p += 4; | |
10757 | if (!odd) | |
10758 | { | |
10759 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10760 | p += 4; | |
10761 | } | |
10762 | if (load) | |
10763 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10764 | else | |
10765 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10766 | } | |
10767 | p += 4; | |
10768 | return p; | |
10769 | } | |
10770 | ||
10771 | static unsigned int | |
7c1f4227 | 10772 | size_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10773 | { |
10774 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10775 | return odd + 8; | |
10776 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10777 | return 20; | |
10778 | else | |
10779 | return 24; | |
10780 | } | |
10781 | ||
10782 | static unsigned int | |
7c1f4227 | 10783 | num_relocs_for_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10784 | { |
10785 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10786 | return 1; | |
10787 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10788 | return 2; | |
10789 | else | |
10790 | return 3; | |
10791 | } | |
10792 | ||
10793 | static Elf_Internal_Rela * | |
7c1f4227 | 10794 | emit_relocs_for_power10_offset (struct bfd_link_info *info, |
04bdff6a AM |
10795 | Elf_Internal_Rela *r, bfd_vma roff, |
10796 | bfd_vma targ, bfd_vma off, int odd) | |
10797 | { | |
10798 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10799 | roff += odd; | |
10800 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10801 | { | |
10802 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10803 | r->r_offset = roff + d_offset; | |
10804 | r->r_addend = targ + 8 - odd - d_offset; | |
10805 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10806 | ++r; | |
10807 | roff += 8 - odd; | |
10808 | } | |
10809 | else | |
10810 | { | |
10811 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10812 | r->r_offset = roff + d_offset; | |
10813 | r->r_addend = targ + 8 + odd - d_offset; | |
10814 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10815 | ++r; | |
10816 | roff += 4; | |
10817 | r->r_offset = roff + d_offset; | |
10818 | r->r_addend = targ + 4 + odd - d_offset; | |
10819 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10820 | ++r; | |
10821 | roff += 4 + odd; | |
10822 | } | |
10823 | r->r_offset = roff; | |
10824 | r->r_addend = targ; | |
10825 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10826 | return r; | |
10827 | } | |
10828 | ||
df136d64 AM |
10829 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10830 | ||
10831 | static bfd_byte * | |
10832 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10833 | { | |
10834 | delta /= 4; | |
10835 | if (delta < 64) | |
10836 | *eh++ = DW_CFA_advance_loc + delta; | |
10837 | else if (delta < 256) | |
10838 | { | |
10839 | *eh++ = DW_CFA_advance_loc1; | |
10840 | *eh++ = delta; | |
10841 | } | |
10842 | else if (delta < 65536) | |
10843 | { | |
10844 | *eh++ = DW_CFA_advance_loc2; | |
10845 | bfd_put_16 (abfd, delta, eh); | |
10846 | eh += 2; | |
10847 | } | |
10848 | else | |
10849 | { | |
10850 | *eh++ = DW_CFA_advance_loc4; | |
10851 | bfd_put_32 (abfd, delta, eh); | |
10852 | eh += 4; | |
10853 | } | |
10854 | return eh; | |
10855 | } | |
10856 | ||
10857 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10858 | ||
10859 | static unsigned int | |
10860 | eh_advance_size (unsigned int delta) | |
10861 | { | |
10862 | if (delta < 64 * 4) | |
10863 | /* DW_CFA_advance_loc+[1..63]. */ | |
10864 | return 1; | |
10865 | if (delta < 256 * 4) | |
10866 | /* DW_CFA_advance_loc1, byte. */ | |
10867 | return 2; | |
10868 | if (delta < 65536 * 4) | |
10869 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10870 | return 3; | |
10871 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10872 | return 5; | |
10873 | } | |
10874 | ||
794e51c0 AM |
10875 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10876 | to update a plt entry in one thread and have another thread see a | |
10877 | stale zero toc entry. To avoid this we need some sort of acquire | |
10878 | barrier in the call stub. One solution is to make the load of the | |
10879 | toc word seem to appear to depend on the load of the function entry | |
10880 | word. Another solution is to test for r2 being zero, and branch to | |
10881 | the appropriate glink entry if so. | |
10882 | ||
10883 | . fake dep barrier compare | |
71a39c98 AM |
10884 | . ld 12,xxx(2) ld 12,xxx(2) |
10885 | . mtctr 12 mtctr 12 | |
10886 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10887 | . add 2,2,11 cmpldi 2,0 |
10888 | . ld 2,xxx+8(2) bnectr+ | |
10889 | . bctr b <glink_entry> | |
10890 | ||
10891 | The solution involving the compare turns out to be faster, so | |
10892 | that's what we use unless the branch won't reach. */ | |
10893 | ||
10894 | #define ALWAYS_USE_FAKE_DEP 0 | |
10895 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10896 | |
794e51c0 AM |
10897 | static inline unsigned int |
10898 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10899 | struct ppc_stub_hash_entry *stub_entry, | |
29433886 AM |
10900 | bfd_vma off, |
10901 | unsigned int odd) | |
794e51c0 | 10902 | { |
05d0e962 | 10903 | unsigned size; |
b9e5796b | 10904 | |
05d0e962 AM |
10905 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10906 | { | |
e10a07b3 | 10907 | if (htab->params->power10_stubs != 0) |
29433886 | 10908 | size = 8 + size_power10_offset (off, odd); |
04bdff6a AM |
10909 | else |
10910 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10911 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10912 | size += 4; | |
05d0e962 | 10913 | } |
29433886 | 10914 | else |
b9e5796b | 10915 | { |
29433886 AM |
10916 | size = 12; |
10917 | if (ALWAYS_EMIT_R2SAVE | |
10918 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
b9e5796b | 10919 | size += 4; |
29433886 | 10920 | if (PPC_HA (off) != 0) |
b9e5796b | 10921 | size += 4; |
29433886 AM |
10922 | if (htab->opd_abi) |
10923 | { | |
10924 | size += 4; | |
10925 | if (htab->params->plt_static_chain) | |
10926 | size += 4; | |
10927 | if (htab->params->plt_thread_safe | |
10928 | && htab->elf.dynamic_sections_created | |
10929 | && stub_entry->h != NULL | |
10930 | && stub_entry->h->elf.dynindx != -1) | |
10931 | size += 8; | |
10932 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) | |
10933 | != PPC_HA (off)) | |
10934 | size += 4; | |
10935 | } | |
b9e5796b | 10936 | } |
794e51c0 | 10937 | if (stub_entry->h != NULL |
ed7007c1 | 10938 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10939 | && htab->params->tls_get_addr_opt) |
f378ab09 | 10940 | { |
29433886 | 10941 | if (!htab->params->no_tls_get_addr_regsave) |
9e7028aa | 10942 | { |
29433886 AM |
10943 | size += 30 * 4; |
10944 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
10945 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10946 | size += 4; | |
9e7028aa AM |
10947 | } |
10948 | else | |
10949 | { | |
29433886 AM |
10950 | size += 7 * 4; |
10951 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
10952 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10953 | size += 6 * 4; | |
9e7028aa | 10954 | } |
f378ab09 | 10955 | } |
794e51c0 AM |
10956 | return size; |
10957 | } | |
10958 | ||
2420fff6 AM |
10959 | /* Depending on the sign of plt_stub_align: |
10960 | If positive, return the padding to align to a 2**plt_stub_align | |
10961 | boundary. | |
10962 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10963 | boundaries if we align, then return the padding needed to do so. */ | |
10964 | ||
794e51c0 AM |
10965 | static inline unsigned int |
10966 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10967 | struct ppc_stub_hash_entry *stub_entry, | |
29433886 AM |
10968 | bfd_vma plt_off, |
10969 | unsigned int odd) | |
794e51c0 | 10970 | { |
2420fff6 | 10971 | int stub_align; |
1aa42141 | 10972 | unsigned stub_size; |
6f20ed8a | 10973 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10974 | |
2420fff6 AM |
10975 | if (htab->params->plt_stub_align >= 0) |
10976 | { | |
10977 | stub_align = 1 << htab->params->plt_stub_align; | |
10978 | if ((stub_off & (stub_align - 1)) != 0) | |
10979 | return stub_align - (stub_off & (stub_align - 1)); | |
10980 | return 0; | |
10981 | } | |
10982 | ||
10983 | stub_align = 1 << -htab->params->plt_stub_align; | |
29433886 | 10984 | stub_size = plt_stub_size (htab, stub_entry, plt_off, odd); |
794e51c0 | 10985 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10986 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10987 | return stub_align - (stub_off & (stub_align - 1)); |
10988 | return 0; | |
10989 | } | |
10990 | ||
10991 | /* Build a .plt call stub. */ | |
10992 | ||
10993 | static inline bfd_byte * | |
10994 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10995 | struct ppc_stub_hash_entry *stub_entry, | |
10996 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10997 | { | |
e7d1c40c | 10998 | bfd *obfd = htab->params->stub_bfd; |
0a1b45a2 AM |
10999 | bool plt_load_toc = htab->opd_abi; |
11000 | bool plt_static_chain = htab->params->plt_static_chain; | |
11001 | bool plt_thread_safe = (htab->params->plt_thread_safe | |
11002 | && htab->elf.dynamic_sections_created | |
11003 | && stub_entry->h != NULL | |
11004 | && stub_entry->h->elf.dynindx != -1); | |
11005 | bool use_fake_dep = plt_thread_safe; | |
794e51c0 AM |
11006 | bfd_vma cmp_branch_off = 0; |
11007 | ||
11008 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 11009 | && plt_load_toc |
794e51c0 | 11010 | && plt_thread_safe |
9e51d549 AM |
11011 | && !(stub_entry->h != NULL |
11012 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
7c9cf415 | 11013 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
11014 | { |
11015 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
11016 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
11017 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 11018 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
11019 | bfd_vma to, from; |
11020 | ||
68d62958 AM |
11021 | if (pltindex > 32768) |
11022 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
11023 | to = (glinkoff |
11024 | + htab->glink->output_offset | |
11025 | + htab->glink->output_section->vma); | |
6f20ed8a | 11026 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
11027 | + 4 * (ALWAYS_EMIT_R2SAVE |
11028 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11029 | + 4 * (PPC_HA (offset) != 0) | |
11030 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
11031 | != PPC_HA (offset)) | |
11032 | + 4 * (plt_static_chain != 0) | |
11033 | + 20 | |
6f20ed8a AM |
11034 | + stub_entry->group->stub_sec->output_offset |
11035 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
11036 | cmp_branch_off = to - from; |
11037 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
11038 | } | |
11039 | ||
ac2df442 AM |
11040 | if (PPC_HA (offset) != 0) |
11041 | { | |
176a0d42 AM |
11042 | if (r != NULL) |
11043 | { | |
794e51c0 AM |
11044 | if (ALWAYS_EMIT_R2SAVE |
11045 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11046 | r[0].r_offset += 4; | |
176a0d42 | 11047 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 11048 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
11049 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
11050 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 11051 | if (plt_load_toc) |
176a0d42 | 11052 | { |
b9e5796b | 11053 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11054 | { |
b9e5796b AM |
11055 | r[2].r_offset = r[1].r_offset + 4; |
11056 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
11057 | r[2].r_addend = r[0].r_addend; | |
11058 | } | |
11059 | else | |
11060 | { | |
11061 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
11062 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11063 | r[2].r_addend = r[0].r_addend + 8; | |
11064 | if (plt_static_chain) | |
11065 | { | |
11066 | r[3].r_offset = r[2].r_offset + 4; | |
11067 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11068 | r[3].r_addend = r[0].r_addend + 16; | |
11069 | } | |
c7131b65 | 11070 | } |
176a0d42 AM |
11071 | } |
11072 | } | |
794e51c0 AM |
11073 | if (ALWAYS_EMIT_R2SAVE |
11074 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11075 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
11076 | if (plt_load_toc) |
11077 | { | |
11078 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
11079 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
11080 | } | |
11081 | else | |
11082 | { | |
11083 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
11084 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
11085 | } | |
b9e5796b AM |
11086 | if (plt_load_toc |
11087 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 11088 | { |
71a39c98 | 11089 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
11090 | offset = 0; |
11091 | } | |
71a39c98 | 11092 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11093 | if (plt_load_toc) |
794e51c0 | 11094 | { |
b9e5796b AM |
11095 | if (use_fake_dep) |
11096 | { | |
11097 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
11098 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
11099 | } | |
11100 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
11101 | if (plt_static_chain) | |
11102 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 11103 | } |
ac2df442 AM |
11104 | } |
11105 | else | |
11106 | { | |
176a0d42 AM |
11107 | if (r != NULL) |
11108 | { | |
794e51c0 AM |
11109 | if (ALWAYS_EMIT_R2SAVE |
11110 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11111 | r[0].r_offset += 4; | |
176a0d42 | 11112 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 11113 | if (plt_load_toc) |
176a0d42 | 11114 | { |
b9e5796b | 11115 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11116 | { |
b9e5796b AM |
11117 | r[1].r_offset = r[0].r_offset + 4; |
11118 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
11119 | r[1].r_addend = r[0].r_addend; | |
11120 | } | |
11121 | else | |
11122 | { | |
11123 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
11124 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11125 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
11126 | if (plt_static_chain) | |
11127 | { | |
11128 | r[2].r_offset = r[1].r_offset + 4; | |
11129 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11130 | r[2].r_addend = r[0].r_addend + 8; | |
11131 | } | |
c7131b65 | 11132 | } |
176a0d42 AM |
11133 | } |
11134 | } | |
794e51c0 AM |
11135 | if (ALWAYS_EMIT_R2SAVE |
11136 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11137 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11138 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11139 | if (plt_load_toc |
11140 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11141 | { |
11142 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11143 | offset = 0; | |
11144 | } | |
71a39c98 | 11145 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11146 | if (plt_load_toc) |
794e51c0 | 11147 | { |
b9e5796b AM |
11148 | if (use_fake_dep) |
11149 | { | |
11150 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11151 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11152 | } | |
11153 | if (plt_static_chain) | |
11154 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11155 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11156 | } |
ac2df442 | 11157 | } |
b9e5796b | 11158 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11159 | { |
11160 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11161 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11162 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11163 | } |
11164 | else | |
407aa07c | 11165 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11166 | return p; |
11167 | } | |
11168 | ||
a7f2871e AM |
11169 | /* Build a special .plt call stub for __tls_get_addr. */ |
11170 | ||
b9ca1af6 | 11171 | #define LD_R0_0R3 0xe8030000 |
a7f2871e AM |
11172 | #define LD_R12_0R3 0xe9830000 |
11173 | #define MR_R0_R3 0x7c601b78 | |
b9ca1af6 | 11174 | #define CMPDI_R0_0 0x2c200000 |
a7f2871e AM |
11175 | #define ADD_R3_R12_R13 0x7c6c6a14 |
11176 | #define BEQLR 0x4d820020 | |
11177 | #define MR_R3_R0 0x7c030378 | |
a7f2871e | 11178 | #define BCTRL 0x4e800421 |
a7f2871e | 11179 | |
29433886 AM |
11180 | static bfd_byte * |
11181 | build_tls_get_addr_head (struct ppc_link_hash_table *htab, | |
794e51c0 | 11182 | struct ppc_stub_hash_entry *stub_entry, |
29433886 | 11183 | bfd_byte *p) |
a7f2871e | 11184 | { |
e7d1c40c | 11185 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11186 | |
b9ca1af6 | 11187 | bfd_put_32 (obfd, LD_R0_0R3 + 0, p), p += 4; |
a7f2871e | 11188 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; |
b9ca1af6 | 11189 | bfd_put_32 (obfd, CMPDI_R0_0, p), p += 4; |
a7f2871e | 11190 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; |
a7f2871e AM |
11191 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; |
11192 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11193 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9e7028aa | 11194 | |
29433886 AM |
11195 | if (!htab->params->no_tls_get_addr_regsave) |
11196 | p = tls_get_addr_prologue (obfd, p, htab); | |
11197 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11198 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11199 | { | |
9e7028aa AM |
11200 | bfd_put_32 (obfd, MFLR_R0, p); |
11201 | p += 4; | |
11202 | bfd_put_32 (obfd, STD_R0_0R1 + STK_LINKER (htab), p); | |
11203 | p += 4; | |
29433886 AM |
11204 | } |
11205 | return p; | |
11206 | } | |
9e7028aa | 11207 | |
29433886 AM |
11208 | static bfd_byte * |
11209 | build_tls_get_addr_tail (struct ppc_link_hash_table *htab, | |
11210 | struct ppc_stub_hash_entry *stub_entry, | |
11211 | bfd_byte *p, | |
11212 | bfd_byte *loc) | |
11213 | { | |
11214 | bfd *obfd = htab->params->stub_bfd; | |
11215 | ||
11216 | if (!htab->params->no_tls_get_addr_regsave) | |
11217 | { | |
11218 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11219 | ||
11220 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11221 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11222 | { | |
11223 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11224 | p += 4; | |
11225 | } | |
11226 | p = tls_get_addr_epilogue (obfd, p, htab); | |
11227 | } | |
11228 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11229 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11230 | { | |
9e7028aa AM |
11231 | bfd_put_32 (obfd, BCTRL, p - 4); |
11232 | ||
11233 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11234 | p += 4; | |
11235 | bfd_put_32 (obfd, LD_R0_0R1 + STK_LINKER (htab), p); | |
11236 | p += 4; | |
11237 | bfd_put_32 (obfd, MTLR_R0, p); | |
11238 | p += 4; | |
11239 | bfd_put_32 (obfd, BLR, p); | |
11240 | p += 4; | |
11241 | } | |
a7f2871e | 11242 | |
df136d64 AM |
11243 | if (htab->glink_eh_frame != NULL |
11244 | && htab->glink_eh_frame->size != 0) | |
11245 | { | |
11246 | bfd_byte *base, *eh; | |
df136d64 AM |
11247 | |
11248 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11249 | eh = base + stub_entry->group->eh_size; | |
29433886 AM |
11250 | |
11251 | if (!htab->params->no_tls_get_addr_regsave) | |
9e7028aa | 11252 | { |
29433886 AM |
11253 | unsigned int cfa_updt, delta, i; |
11254 | ||
9e7028aa AM |
11255 | /* After the bctrl, lr has been modified so we need to emit |
11256 | .eh_frame info saying the return address is on the stack. In | |
11257 | fact we must put the EH info at or before the call rather | |
11258 | than after it, because the EH info for a call needs to be | |
11259 | specified by that point. | |
11260 | See libgcc/unwind-dw2.c execute_cfa_program. | |
11261 | Any stack pointer update must be described immediately after | |
11262 | the instruction making the change, and since the stdu occurs | |
11263 | after saving regs we put all the reg saves and the cfa | |
11264 | change there. */ | |
11265 | cfa_updt = stub_entry->stub_offset + 18 * 4; | |
11266 | delta = cfa_updt - stub_entry->group->lr_restore; | |
11267 | stub_entry->group->lr_restore | |
11268 | = stub_entry->stub_offset + (p - loc) - 4; | |
11269 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11270 | *eh++ = DW_CFA_def_cfa_offset; | |
11271 | if (htab->opd_abi) | |
11272 | { | |
11273 | *eh++ = 128; | |
11274 | *eh++ = 1; | |
11275 | } | |
11276 | else | |
11277 | *eh++ = 96; | |
11278 | *eh++ = DW_CFA_offset_extended_sf; | |
11279 | *eh++ = 65; | |
11280 | *eh++ = (-16 / 8) & 0x7f; | |
11281 | for (i = 4; i < 12; i++) | |
11282 | { | |
11283 | *eh++ = DW_CFA_offset + i; | |
11284 | *eh++ = (htab->opd_abi ? 13 : 12) - i; | |
11285 | } | |
11286 | *eh++ = (DW_CFA_advance_loc | |
11287 | + (stub_entry->group->lr_restore - 8 - cfa_updt) / 4); | |
11288 | *eh++ = DW_CFA_def_cfa_offset; | |
11289 | *eh++ = 0; | |
11290 | for (i = 4; i < 12; i++) | |
11291 | *eh++ = DW_CFA_restore + i; | |
11292 | *eh++ = DW_CFA_advance_loc + 2; | |
29433886 AM |
11293 | *eh++ = DW_CFA_restore_extended; |
11294 | *eh++ = 65; | |
11295 | stub_entry->group->eh_size = eh - base; | |
11296 | } | |
11297 | else if (stub_entry->stub_type == ppc_stub_plt_call_r2save | |
11298 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11299 | { | |
11300 | unsigned int lr_used, delta; | |
11301 | ||
11302 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11303 | delta = lr_used - stub_entry->group->lr_restore; | |
11304 | stub_entry->group->lr_restore = lr_used + 16; | |
11305 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11306 | *eh++ = DW_CFA_offset_extended_sf; | |
11307 | *eh++ = 65; | |
11308 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11309 | *eh++ = DW_CFA_advance_loc + 4; | |
11310 | *eh++ = DW_CFA_restore_extended; | |
11311 | *eh++ = 65; | |
11312 | stub_entry->group->eh_size = eh - base; | |
9e7028aa | 11313 | } |
df136d64 | 11314 | } |
a7f2871e AM |
11315 | return p; |
11316 | } | |
11317 | ||
176a0d42 AM |
11318 | static Elf_Internal_Rela * |
11319 | get_relocs (asection *sec, int count) | |
11320 | { | |
11321 | Elf_Internal_Rela *relocs; | |
11322 | struct bfd_elf_section_data *elfsec_data; | |
11323 | ||
11324 | elfsec_data = elf_section_data (sec); | |
11325 | relocs = elfsec_data->relocs; | |
11326 | if (relocs == NULL) | |
11327 | { | |
11328 | bfd_size_type relsize; | |
11329 | relsize = sec->reloc_count * sizeof (*relocs); | |
11330 | relocs = bfd_alloc (sec->owner, relsize); | |
11331 | if (relocs == NULL) | |
11332 | return NULL; | |
11333 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11334 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11335 | sizeof (Elf_Internal_Shdr)); | |
11336 | if (elfsec_data->rela.hdr == NULL) | |
11337 | return NULL; | |
11338 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11339 | * sizeof (Elf64_External_Rela)); | |
11340 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11341 | sec->reloc_count = 0; |
11342 | } | |
11343 | relocs += sec->reloc_count; | |
11344 | sec->reloc_count += count; | |
11345 | return relocs; | |
11346 | } | |
11347 | ||
3d58e1fc AM |
11348 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
11349 | forms, to the equivalent relocs against the global symbol given by | |
11350 | STUB_ENTRY->H. */ | |
11351 | ||
0a1b45a2 | 11352 | static bool |
3d58e1fc AM |
11353 | use_global_in_relocs (struct ppc_link_hash_table *htab, |
11354 | struct ppc_stub_hash_entry *stub_entry, | |
11355 | Elf_Internal_Rela *r, unsigned int num_rel) | |
11356 | { | |
11357 | struct elf_link_hash_entry **hashes; | |
11358 | unsigned long symndx; | |
11359 | struct ppc_link_hash_entry *h; | |
11360 | bfd_vma symval; | |
11361 | ||
11362 | /* Relocs are always against symbols in their own object file. Fake | |
11363 | up global sym hashes for the stub bfd (which has no symbols). */ | |
11364 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
11365 | if (hashes == NULL) | |
11366 | { | |
11367 | bfd_size_type hsize; | |
11368 | ||
11369 | /* When called the first time, stub_globals will contain the | |
11370 | total number of symbols seen during stub sizing. After | |
11371 | allocating, stub_globals is used as an index to fill the | |
11372 | hashes array. */ | |
11373 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11374 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11375 | if (hashes == NULL) | |
0a1b45a2 | 11376 | return false; |
3d58e1fc AM |
11377 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
11378 | htab->stub_globals = 1; | |
11379 | } | |
11380 | symndx = htab->stub_globals++; | |
11381 | h = stub_entry->h; | |
11382 | hashes[symndx] = &h->elf; | |
11383 | if (h->oh != NULL && h->oh->is_func) | |
11384 | h = ppc_follow_link (h->oh); | |
11385 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11386 | || h->elf.root.type == bfd_link_hash_defweak); | |
ed7007c1 | 11387 | symval = defined_sym_val (&h->elf); |
3d58e1fc AM |
11388 | while (num_rel-- != 0) |
11389 | { | |
11390 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11391 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11392 | { | |
11393 | /* H is an opd symbol. The addend must be zero, and the | |
11394 | branch reloc is the only one we can convert. */ | |
11395 | r->r_addend = 0; | |
11396 | break; | |
11397 | } | |
11398 | else | |
11399 | r->r_addend -= symval; | |
11400 | --r; | |
11401 | } | |
0a1b45a2 | 11402 | return true; |
3d58e1fc AM |
11403 | } |
11404 | ||
aa374f67 | 11405 | static bfd_vma |
25f53a85 | 11406 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11407 | struct ppc_stub_hash_entry *stub_entry) |
11408 | { | |
25f53a85 | 11409 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11410 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11411 | |
11412 | if (r2off == 0) | |
11413 | { | |
11414 | /* Support linking -R objects. Get the toc pointer from the | |
11415 | opd entry. */ | |
11416 | char buf[8]; | |
b9e5796b AM |
11417 | if (!htab->opd_abi) |
11418 | return r2off; | |
aa374f67 AM |
11419 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11420 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11421 | ||
11422 | if (strcmp (opd->name, ".opd") != 0 | |
11423 | || opd->reloc_count != 0) | |
11424 | { | |
2cdcc330 AM |
11425 | info->callbacks->einfo |
11426 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11427 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11428 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11429 | return (bfd_vma) -1; |
aa374f67 AM |
11430 | } |
11431 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11432 | return (bfd_vma) -1; |
aa374f67 | 11433 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11434 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11435 | } |
6f20ed8a | 11436 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11437 | return r2off; |
11438 | } | |
11439 | ||
0a1b45a2 | 11440 | static bool |
4ce794b7 | 11441 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11442 | { |
721956f4 AM |
11443 | struct ppc_stub_hash_entry *stub_entry; |
11444 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11445 | struct bfd_link_info *info; |
11446 | struct ppc_link_hash_table *htab; | |
29433886 | 11447 | bfd *obfd; |
721956f4 | 11448 | bfd_byte *loc; |
3d58e1fc | 11449 | bfd_byte *p, *relp; |
1aa42141 | 11450 | bfd_vma targ, off; |
176a0d42 | 11451 | Elf_Internal_Rela *r; |
e054468f | 11452 | asection *plt; |
3d58e1fc | 11453 | int num_rel; |
04bdff6a | 11454 | int odd; |
0a1b45a2 | 11455 | bool is_tga; |
5d1634d7 | 11456 | |
721956f4 AM |
11457 | /* Massage our args to the form they really have. */ |
11458 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11459 | info = in_arg; |
5d1634d7 | 11460 | |
abf874aa CL |
11461 | /* Fail if the target section could not be assigned to an output |
11462 | section. The user should fix his linker script. */ | |
11463 | if (stub_entry->target_section != NULL | |
11464 | && stub_entry->target_section->output_section == NULL | |
11465 | && info->non_contiguous_regions) | |
53215f21 CL |
11466 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
11467 | "Retry without --enable-non-contiguous-regions.\n"), | |
11468 | stub_entry->target_section); | |
abf874aa CL |
11469 | |
11470 | /* Same for the group. */ | |
11471 | if (stub_entry->group->stub_sec != NULL | |
11472 | && stub_entry->group->stub_sec->output_section == NULL | |
11473 | && info->non_contiguous_regions) | |
53215f21 CL |
11474 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11475 | "output section. Retry without " | |
11476 | "--enable-non-contiguous-regions.\n"), | |
11477 | stub_entry->group->stub_sec, | |
11478 | stub_entry->target_section); | |
abf874aa | 11479 | |
5d1634d7 | 11480 | htab = ppc_hash_table (info); |
4dfe6ac6 | 11481 | if (htab == NULL) |
0a1b45a2 | 11482 | return false; |
5d1634d7 | 11483 | |
1aa42141 | 11484 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11485 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11486 | |
4ce794b7 | 11487 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11488 | switch (stub_entry->stub_type) |
5d1634d7 | 11489 | { |
721956f4 | 11490 | case ppc_stub_long_branch: |
ad8e1ba5 | 11491 | case ppc_stub_long_branch_r2off: |
721956f4 | 11492 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11493 | targ = (stub_entry->target_value |
6911b7dc AM |
11494 | + stub_entry->target_section->output_offset |
11495 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11496 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11497 | |
721956f4 | 11498 | /* And this is where we are coming from. */ |
1aa42141 AM |
11499 | off = (stub_entry->stub_offset |
11500 | + stub_entry->group->stub_sec->output_offset | |
11501 | + stub_entry->group->stub_sec->output_section->vma); | |
11502 | off = targ - off; | |
e86ce104 | 11503 | |
9e390558 | 11504 | p = loc; |
29433886 | 11505 | obfd = htab->params->stub_bfd; |
ac2df442 | 11506 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11507 | { |
25f53a85 | 11508 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11509 | |
a7c49797 | 11510 | if (r2off == (bfd_vma) -1) |
aa374f67 | 11511 | { |
0a1b45a2 AM |
11512 | htab->stub_error = true; |
11513 | return false; | |
aa374f67 | 11514 | } |
29433886 | 11515 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11516 | p += 4; |
ac2df442 AM |
11517 | if (PPC_HA (r2off) != 0) |
11518 | { | |
29433886 | 11519 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
9e390558 | 11520 | p += 4; |
a7c49797 AM |
11521 | } |
11522 | if (PPC_LO (r2off) != 0) | |
11523 | { | |
29433886 | 11524 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
9e390558 | 11525 | p += 4; |
ac2df442 | 11526 | } |
9e390558 | 11527 | off -= p - loc; |
ad8e1ba5 | 11528 | } |
29433886 | 11529 | bfd_put_32 (obfd, B_DOT | (off & 0x3fffffc), p); |
9e390558 | 11530 | p += 4; |
ad8e1ba5 | 11531 | |
5c3dead3 AM |
11532 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11533 | { | |
cf97bcb0 AM |
11534 | _bfd_error_handler |
11535 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11536 | stub_entry->root.string); |
0a1b45a2 AM |
11537 | htab->stub_error = true; |
11538 | return false; | |
5c3dead3 | 11539 | } |
ee75fd95 AM |
11540 | |
11541 | if (info->emitrelocations) | |
11542 | { | |
6f20ed8a | 11543 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 | 11544 | if (r == NULL) |
0a1b45a2 | 11545 | return false; |
9e390558 | 11546 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11547 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11548 | r->r_addend = targ; |
3d58e1fc AM |
11549 | if (stub_entry->h != NULL |
11550 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
0a1b45a2 | 11551 | return false; |
ee75fd95 | 11552 | } |
721956f4 | 11553 | break; |
e86ce104 | 11554 | |
721956f4 | 11555 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11556 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11557 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11558 | stub_entry->root.string + 9, | |
0a1b45a2 | 11559 | false, false); |
721956f4 AM |
11560 | if (br_entry == NULL) |
11561 | { | |
cf97bcb0 AM |
11562 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11563 | stub_entry->root.string); | |
0a1b45a2 AM |
11564 | htab->stub_error = true; |
11565 | return false; | |
721956f4 AM |
11566 | } |
11567 | ||
1aa42141 | 11568 | targ = (stub_entry->target_value |
176a0d42 AM |
11569 | + stub_entry->target_section->output_offset |
11570 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11571 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11572 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11573 | |
1aa42141 | 11574 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11575 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11576 | |
f94498ff | 11577 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11578 | { |
f94498ff | 11579 | br_entry->iter = 0; |
84f5d08e | 11580 | |
f94498ff | 11581 | if (htab->relbrlt != NULL) |
84f5d08e | 11582 | { |
f94498ff AM |
11583 | /* Create a reloc for the branch lookup table entry. */ |
11584 | Elf_Internal_Rela rela; | |
11585 | bfd_byte *rl; | |
11586 | ||
11587 | rela.r_offset = (br_entry->offset | |
11588 | + htab->brlt->output_offset | |
11589 | + htab->brlt->output_section->vma); | |
11590 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11591 | rela.r_addend = targ; |
f94498ff AM |
11592 | |
11593 | rl = htab->relbrlt->contents; | |
11594 | rl += (htab->relbrlt->reloc_count++ | |
11595 | * sizeof (Elf64_External_Rela)); | |
11596 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11597 | } | |
11598 | else if (info->emitrelocations) | |
11599 | { | |
176a0d42 AM |
11600 | r = get_relocs (htab->brlt, 1); |
11601 | if (r == NULL) | |
0a1b45a2 | 11602 | return false; |
176a0d42 AM |
11603 | /* brlt, being SEC_LINKER_CREATED does not go through the |
11604 | normal reloc processing. Symbols and offsets are not | |
11605 | translated from input file to output file form, so | |
11606 | set up the offset per the output file. */ | |
f94498ff AM |
11607 | r->r_offset = (br_entry->offset |
11608 | + htab->brlt->output_offset | |
11609 | + htab->brlt->output_section->vma); | |
11610 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11611 | r->r_addend = targ; |
84f5d08e | 11612 | } |
84f5d08e | 11613 | } |
721956f4 | 11614 | |
1aa42141 | 11615 | targ = (br_entry->offset |
176a0d42 AM |
11616 | + htab->brlt->output_offset |
11617 | + htab->brlt->output_section->vma); | |
11618 | ||
1aa42141 AM |
11619 | off = (elf_gp (info->output_bfd) |
11620 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11621 | off = targ - off; | |
721956f4 | 11622 | |
ad8e1ba5 | 11623 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11624 | { |
25f53a85 | 11625 | info->callbacks->einfo |
c1c8c1ef | 11626 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11627 | stub_entry->root.string); |
5d1634d7 | 11628 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 AM |
11629 | htab->stub_error = true; |
11630 | return false; | |
5d1634d7 | 11631 | } |
41bd81ab | 11632 | |
176a0d42 AM |
11633 | if (info->emitrelocations) |
11634 | { | |
6f20ed8a | 11635 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 | 11636 | if (r == NULL) |
0a1b45a2 | 11637 | return false; |
6f20ed8a | 11638 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11639 | if (bfd_big_endian (info->output_bfd)) |
11640 | r[0].r_offset += 2; | |
00f412ee | 11641 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11642 | r[0].r_offset += 4; |
11643 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11644 | r[0].r_addend = targ; |
176a0d42 AM |
11645 | if (PPC_HA (off) != 0) |
11646 | { | |
11647 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11648 | r[1].r_offset = r[0].r_offset + 4; | |
11649 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11650 | r[1].r_addend = r[0].r_addend; | |
11651 | } | |
11652 | } | |
11653 | ||
9e390558 | 11654 | p = loc; |
29433886 | 11655 | obfd = htab->params->stub_bfd; |
00f412ee | 11656 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11657 | { |
176a0d42 | 11658 | if (PPC_HA (off) != 0) |
ac2df442 | 11659 | { |
29433886 | 11660 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11661 | p += 4; |
29433886 | 11662 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11663 | } |
11664 | else | |
29433886 | 11665 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ad8e1ba5 AM |
11666 | } |
11667 | else | |
11668 | { | |
25f53a85 | 11669 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11670 | |
a7c49797 | 11671 | if (r2off == (bfd_vma) -1) |
aa374f67 | 11672 | { |
0a1b45a2 AM |
11673 | htab->stub_error = true; |
11674 | return false; | |
aa374f67 | 11675 | } |
ad8e1ba5 | 11676 | |
29433886 | 11677 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11678 | p += 4; |
176a0d42 | 11679 | if (PPC_HA (off) != 0) |
ac2df442 | 11680 | { |
29433886 | 11681 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11682 | p += 4; |
29433886 | 11683 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11684 | } |
11685 | else | |
29433886 | 11686 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11687 | |
11688 | if (PPC_HA (r2off) != 0) | |
11689 | { | |
9e390558 | 11690 | p += 4; |
29433886 | 11691 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11692 | } |
11693 | if (PPC_LO (r2off) != 0) | |
11694 | { | |
9e390558 | 11695 | p += 4; |
29433886 | 11696 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11697 | } |
ad8e1ba5 | 11698 | } |
9e390558 | 11699 | p += 4; |
29433886 | 11700 | bfd_put_32 (obfd, MTCTR_R12, p); |
9e390558 | 11701 | p += 4; |
29433886 | 11702 | bfd_put_32 (obfd, BCTR, p); |
407aa07c | 11703 | p += 4; |
721956f4 | 11704 | break; |
5d1634d7 | 11705 | |
05d0e962 AM |
11706 | case ppc_stub_long_branch_notoc: |
11707 | case ppc_stub_long_branch_both: | |
11708 | case ppc_stub_plt_branch_notoc: | |
11709 | case ppc_stub_plt_branch_both: | |
11710 | case ppc_stub_plt_call_notoc: | |
11711 | case ppc_stub_plt_call_both: | |
11712 | p = loc; | |
f891966f | 11713 | off = (stub_entry->stub_offset |
05d0e962 AM |
11714 | + stub_entry->group->stub_sec->output_offset |
11715 | + stub_entry->group->stub_sec->output_section->vma); | |
29433886 AM |
11716 | obfd = htab->params->stub_bfd; |
11717 | is_tga = ((stub_entry->stub_type == ppc_stub_plt_call_notoc | |
11718 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
12cf8b93 | 11719 | && stub_entry->h != NULL |
29433886 AM |
11720 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
11721 | && htab->params->tls_get_addr_opt); | |
11722 | if (is_tga) | |
11723 | { | |
11724 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
11725 | off += p - loc; | |
11726 | } | |
05d0e962 AM |
11727 | if (stub_entry->stub_type == ppc_stub_long_branch_both |
11728 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11729 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11730 | { | |
11731 | off += 4; | |
29433886 | 11732 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
05d0e962 AM |
11733 | p += 4; |
11734 | } | |
11735 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11736 | { | |
11737 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11738 | if (targ >= (bfd_vma) -2) | |
11739 | abort (); | |
11740 | ||
11741 | plt = htab->elf.splt; | |
30845f11 | 11742 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
05d0e962 AM |
11743 | { |
11744 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11745 | plt = htab->elf.iplt; | |
11746 | else | |
11747 | plt = htab->pltlocal; | |
11748 | } | |
11749 | targ += plt->output_offset + plt->output_section->vma; | |
11750 | } | |
11751 | else | |
11752 | targ = (stub_entry->target_value | |
11753 | + stub_entry->target_section->output_offset | |
11754 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11755 | odd = off & 4; |
05d0e962 | 11756 | off = targ - off; |
f891966f | 11757 | |
3d58e1fc AM |
11758 | relp = p; |
11759 | num_rel = 0; | |
e10a07b3 | 11760 | if (htab->params->power10_stubs != 0) |
04bdff6a | 11761 | { |
0a1b45a2 | 11762 | bool load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; |
29433886 | 11763 | p = build_power10_offset (obfd, p, off, odd, load); |
04bdff6a AM |
11764 | } |
11765 | else | |
11766 | { | |
29433886 AM |
11767 | if (htab->glink_eh_frame != NULL |
11768 | && htab->glink_eh_frame->size != 0) | |
11769 | { | |
11770 | bfd_byte *base, *eh; | |
11771 | unsigned int lr_used, delta; | |
11772 | ||
11773 | base = (htab->glink_eh_frame->contents | |
11774 | + stub_entry->group->eh_base + 17); | |
11775 | eh = base + stub_entry->group->eh_size; | |
11776 | lr_used = stub_entry->stub_offset + (p - loc) + 8; | |
11777 | delta = lr_used - stub_entry->group->lr_restore; | |
11778 | stub_entry->group->lr_restore = lr_used + 8; | |
11779 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11780 | *eh++ = DW_CFA_register; | |
11781 | *eh++ = 65; | |
11782 | *eh++ = 12; | |
11783 | *eh++ = DW_CFA_advance_loc + 2; | |
11784 | *eh++ = DW_CFA_restore_extended; | |
11785 | *eh++ = 65; | |
11786 | stub_entry->group->eh_size = eh - base; | |
11787 | } | |
11788 | ||
04bdff6a AM |
11789 | /* The notoc stubs calculate their target (either a PLT entry or |
11790 | the global entry point of a function) relative to the PC | |
11791 | returned by the "bcl" two instructions past the start of the | |
11792 | sequence emitted by build_offset. The offset is therefore 8 | |
11793 | less than calculated from the start of the sequence. */ | |
11794 | off -= 8; | |
29433886 | 11795 | p = build_offset (obfd, p, off, |
04bdff6a AM |
11796 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); |
11797 | } | |
11798 | ||
f891966f | 11799 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11800 | { |
f891966f | 11801 | bfd_vma from; |
3d58e1fc | 11802 | num_rel = 1; |
f891966f AM |
11803 | from = (stub_entry->stub_offset |
11804 | + stub_entry->group->stub_sec->output_offset | |
11805 | + stub_entry->group->stub_sec->output_section->vma | |
11806 | + (p - loc)); | |
29433886 | 11807 | bfd_put_32 (obfd, B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11808 | } |
11809 | else | |
11810 | { | |
29433886 | 11811 | bfd_put_32 (obfd, MTCTR_R12, p); |
05d0e962 | 11812 | p += 4; |
29433886 | 11813 | bfd_put_32 (obfd, BCTR, p); |
05d0e962 AM |
11814 | } |
11815 | p += 4; | |
df136d64 | 11816 | |
29433886 AM |
11817 | if (is_tga) |
11818 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
11819 | ||
3d58e1fc AM |
11820 | if (info->emitrelocations) |
11821 | { | |
04bdff6a | 11822 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
e10a07b3 | 11823 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11824 | num_rel += num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
11825 | else |
11826 | { | |
11827 | num_rel += num_relocs_for_offset (off); | |
11828 | roff += 16; | |
11829 | } | |
3d58e1fc AM |
11830 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11831 | if (r == NULL) | |
0a1b45a2 | 11832 | return false; |
e10a07b3 | 11833 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11834 | r = emit_relocs_for_power10_offset (info, r, roff, targ, off, odd); |
04bdff6a AM |
11835 | else |
11836 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11837 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11838 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11839 | { | |
11840 | ++r; | |
11841 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11842 | r->r_offset = roff; | |
11843 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11844 | r->r_addend = targ; | |
11845 | if (stub_entry->h != NULL | |
11846 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
0a1b45a2 | 11847 | return false; |
3d58e1fc AM |
11848 | } |
11849 | } | |
05d0e962 AM |
11850 | break; |
11851 | ||
721956f4 | 11852 | case ppc_stub_plt_call: |
794e51c0 | 11853 | case ppc_stub_plt_call_r2save: |
e054468f | 11854 | if (stub_entry->h != NULL |
b31867b6 AM |
11855 | && stub_entry->h->is_func_descriptor |
11856 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11857 | { |
b31867b6 AM |
11858 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11859 | ||
11860 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11861 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11862 | if (fh->elf.root.type == bfd_link_hash_undefined |
11863 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11864 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11865 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11866 | } |
11867 | ||
721956f4 | 11868 | /* Now build the stub. */ |
1aa42141 AM |
11869 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11870 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11871 | abort (); |
11872 | ||
33e44f2e | 11873 | plt = htab->elf.splt; |
30845f11 | 11874 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
2d7ad24e AM |
11875 | { |
11876 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11877 | plt = htab->elf.iplt; | |
11878 | else | |
11879 | plt = htab->pltlocal; | |
11880 | } | |
1aa42141 | 11881 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11882 | |
1aa42141 AM |
11883 | off = (elf_gp (info->output_bfd) |
11884 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11885 | off = targ - off; | |
721956f4 | 11886 | |
ad8e1ba5 | 11887 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11888 | { |
25f53a85 | 11889 | info->callbacks->einfo |
695344c0 | 11890 | /* xgettext:c-format */ |
c1c8c1ef | 11891 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11892 | stub_entry->h != NULL |
11893 | ? stub_entry->h->elf.root.root.string | |
11894 | : "<local sym>"); | |
721956f4 | 11895 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 AM |
11896 | htab->stub_error = true; |
11897 | return false; | |
721956f4 AM |
11898 | } |
11899 | ||
176a0d42 AM |
11900 | r = NULL; |
11901 | if (info->emitrelocations) | |
11902 | { | |
6f20ed8a | 11903 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11904 | ((PPC_HA (off) != 0) |
11905 | + (htab->opd_abi | |
e7d1c40c | 11906 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11907 | && PPC_HA (off + 16) == PPC_HA (off)) |
11908 | : 1))); | |
176a0d42 | 11909 | if (r == NULL) |
0a1b45a2 | 11910 | return false; |
6f20ed8a | 11911 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11912 | if (bfd_big_endian (info->output_bfd)) |
11913 | r[0].r_offset += 2; | |
1aa42141 | 11914 | r[0].r_addend = targ; |
176a0d42 | 11915 | } |
29433886 AM |
11916 | p = loc; |
11917 | obfd = htab->params->stub_bfd; | |
11918 | is_tga = (stub_entry->h != NULL | |
11919 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
11920 | && htab->params->tls_get_addr_opt); | |
11921 | if (is_tga) | |
11922 | { | |
11923 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
11924 | if (r != NULL) | |
11925 | r[0].r_offset += p - loc; | |
11926 | } | |
11927 | p = build_plt_stub (htab, stub_entry, p, off, r); | |
11928 | if (is_tga) | |
11929 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
721956f4 AM |
11930 | break; |
11931 | ||
a4b6fadd | 11932 | case ppc_stub_save_res: |
0a1b45a2 | 11933 | return true; |
a4b6fadd | 11934 | |
721956f4 AM |
11935 | default: |
11936 | BFD_FAIL (); | |
0a1b45a2 | 11937 | return false; |
721956f4 AM |
11938 | } |
11939 | ||
1aa42141 | 11940 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11941 | |
e7d1c40c | 11942 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11943 | { |
11944 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11945 | size_t len1, len2; |
11946 | char *name; | |
11947 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11948 | "long_branch", |
11949 | "long_branch", | |
3f6ff479 AM |
11950 | "long_branch", |
11951 | "plt_branch", | |
ee75fd95 | 11952 | "plt_branch", |
05d0e962 AM |
11953 | "plt_branch", |
11954 | "plt_branch", | |
11955 | "plt_call", | |
11956 | "plt_call", | |
794e51c0 | 11957 | "plt_call", |
ee75fd95 AM |
11958 | "plt_call" }; |
11959 | ||
11960 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11961 | len2 = strlen (stub_entry->root.string); | |
11962 | name = bfd_malloc (len1 + len2 + 2); | |
11963 | if (name == NULL) | |
0a1b45a2 | 11964 | return false; |
ee75fd95 AM |
11965 | memcpy (name, stub_entry->root.string, 9); |
11966 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11967 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
0a1b45a2 | 11968 | h = elf_link_hash_lookup (&htab->elf, name, true, false, false); |
97b639ba | 11969 | if (h == NULL) |
0a1b45a2 | 11970 | return false; |
97b639ba AM |
11971 | if (h->root.type == bfd_link_hash_new) |
11972 | { | |
11973 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11974 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11975 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11976 | h->ref_regular = 1; |
11977 | h->def_regular = 1; | |
11978 | h->ref_regular_nonweak = 1; | |
11979 | h->forced_local = 1; | |
11980 | h->non_elf = 0; | |
2ec55de3 | 11981 | h->root.linker_def = 1; |
97b639ba AM |
11982 | } |
11983 | } | |
11984 | ||
0a1b45a2 | 11985 | return true; |
721956f4 AM |
11986 | } |
11987 | ||
11988 | /* As above, but don't actually build the stub. Just bump offset so | |
11989 | we know stub section sizes, and select plt_branch stubs where | |
11990 | long_branch stubs won't do. */ | |
11991 | ||
0a1b45a2 | 11992 | static bool |
4ce794b7 | 11993 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11994 | { |
11995 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11996 | struct bfd_link_info *info; |
721956f4 | 11997 | struct ppc_link_hash_table *htab; |
f891966f AM |
11998 | asection *plt; |
11999 | bfd_vma targ, off, r2off; | |
04bdff6a | 12000 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
12001 | |
12002 | /* Massage our args to the form they really have. */ | |
12003 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
12004 | info = in_arg; |
12005 | ||
12006 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 12007 | if (htab == NULL) |
0a1b45a2 | 12008 | return false; |
721956f4 | 12009 | |
abf874aa CL |
12010 | /* Fail if the target section could not be assigned to an output |
12011 | section. The user should fix his linker script. */ | |
12012 | if (stub_entry->target_section != NULL | |
12013 | && stub_entry->target_section->output_section == NULL | |
12014 | && info->non_contiguous_regions) | |
53215f21 CL |
12015 | info->callbacks->einfo (_("%F%P: Could not assign %pA to an output section. " |
12016 | "Retry without --enable-non-contiguous-regions.\n"), | |
12017 | stub_entry->target_section); | |
abf874aa CL |
12018 | |
12019 | /* Same for the group. */ | |
12020 | if (stub_entry->group->stub_sec != NULL | |
12021 | && stub_entry->group->stub_sec->output_section == NULL | |
12022 | && info->non_contiguous_regions) | |
53215f21 CL |
12023 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
12024 | "output section. Retry without " | |
12025 | "--enable-non-contiguous-regions.\n"), | |
12026 | stub_entry->group->stub_sec, | |
12027 | stub_entry->target_section); | |
abf874aa | 12028 | |
1aa42141 AM |
12029 | /* Make a note of the offset within the stubs for this entry. */ |
12030 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12031 | ||
a4b6fadd AM |
12032 | if (stub_entry->h != NULL |
12033 | && stub_entry->h->save_res | |
12034 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
12035 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
12036 | { | |
12037 | /* Don't make stubs to out-of-line register save/restore | |
12038 | functions. Instead, emit copies of the functions. */ | |
12039 | stub_entry->group->needs_save_res = 1; | |
12040 | stub_entry->stub_type = ppc_stub_save_res; | |
0a1b45a2 | 12041 | return true; |
a4b6fadd AM |
12042 | } |
12043 | ||
f891966f | 12044 | switch (stub_entry->stub_type) |
721956f4 | 12045 | { |
f891966f AM |
12046 | case ppc_stub_plt_branch: |
12047 | case ppc_stub_plt_branch_r2off: | |
12048 | /* Reset the stub type from the plt branch variant in case we now | |
12049 | can reach with a shorter stub. */ | |
12050 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12051 | /* Fall through. */ | |
12052 | case ppc_stub_long_branch: | |
12053 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
12054 | targ = (stub_entry->target_value |
12055 | + stub_entry->target_section->output_offset | |
12056 | + stub_entry->target_section->output_section->vma); | |
f891966f | 12057 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
12058 | off = (stub_entry->stub_offset |
12059 | + stub_entry->group->stub_sec->output_offset | |
12060 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 12061 | |
ad8e1ba5 | 12062 | size = 4; |
f891966f | 12063 | r2off = 0; |
ad8e1ba5 AM |
12064 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
12065 | { | |
25f53a85 | 12066 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 12067 | if (r2off == (bfd_vma) -1) |
aa374f67 | 12068 | { |
0a1b45a2 AM |
12069 | htab->stub_error = true; |
12070 | return false; | |
aa374f67 | 12071 | } |
a7c49797 | 12072 | size = 8; |
ac2df442 | 12073 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
12074 | size += 4; |
12075 | if (PPC_LO (r2off) != 0) | |
12076 | size += 4; | |
1aa42141 | 12077 | off += size - 4; |
ad8e1ba5 | 12078 | } |
1aa42141 | 12079 | off = targ - off; |
ad8e1ba5 | 12080 | |
f891966f AM |
12081 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
12082 | Do the same for -R objects without function descriptors. */ | |
12083 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
12084 | && r2off == 0 | |
12085 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
12086 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 12087 | { |
f891966f | 12088 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 12089 | |
f891966f AM |
12090 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
12091 | stub_entry->root.string + 9, | |
0a1b45a2 | 12092 | true, false); |
f891966f | 12093 | if (br_entry == NULL) |
721956f4 | 12094 | { |
f891966f AM |
12095 | _bfd_error_handler (_("can't build branch stub `%s'"), |
12096 | stub_entry->root.string); | |
0a1b45a2 AM |
12097 | htab->stub_error = true; |
12098 | return false; | |
721956f4 AM |
12099 | } |
12100 | ||
f891966f | 12101 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 12102 | { |
f891966f AM |
12103 | br_entry->iter = htab->stub_iteration; |
12104 | br_entry->offset = htab->brlt->size; | |
12105 | htab->brlt->size += 8; | |
63bc6f6c | 12106 | |
f891966f AM |
12107 | if (htab->relbrlt != NULL) |
12108 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
12109 | else if (info->emitrelocations) | |
84f5d08e | 12110 | { |
f891966f AM |
12111 | htab->brlt->reloc_count += 1; |
12112 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 12113 | } |
f891966f | 12114 | } |
ac2df442 | 12115 | |
f891966f AM |
12116 | targ = (br_entry->offset |
12117 | + htab->brlt->output_offset | |
12118 | + htab->brlt->output_section->vma); | |
12119 | off = (elf_gp (info->output_bfd) | |
12120 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12121 | off = targ - off; | |
176a0d42 | 12122 | |
f891966f AM |
12123 | if (info->emitrelocations) |
12124 | { | |
12125 | stub_entry->group->stub_sec->reloc_count | |
12126 | += 1 + (PPC_HA (off) != 0); | |
12127 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12128 | } | |
05d0e962 | 12129 | |
f891966f AM |
12130 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
12131 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
12132 | { | |
12133 | size = 12; | |
12134 | if (PPC_HA (off) != 0) | |
12135 | size = 16; | |
ac2df442 | 12136 | } |
f891966f | 12137 | else |
ac2df442 | 12138 | { |
f891966f AM |
12139 | size = 16; |
12140 | if (PPC_HA (off) != 0) | |
12141 | size += 4; | |
12142 | ||
12143 | if (PPC_HA (r2off) != 0) | |
12144 | size += 4; | |
12145 | if (PPC_LO (r2off) != 0) | |
12146 | size += 4; | |
ac2df442 | 12147 | } |
721956f4 | 12148 | } |
f891966f AM |
12149 | else if (info->emitrelocations) |
12150 | { | |
12151 | stub_entry->group->stub_sec->reloc_count += 1; | |
12152 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12153 | } | |
12154 | break; | |
12155 | ||
12156 | case ppc_stub_plt_branch_notoc: | |
12157 | case ppc_stub_plt_branch_both: | |
12158 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12159 | /* Fall through. */ | |
12160 | case ppc_stub_long_branch_notoc: | |
12161 | case ppc_stub_long_branch_both: | |
12162 | off = (stub_entry->stub_offset | |
12163 | + stub_entry->group->stub_sec->output_offset | |
12164 | + stub_entry->group->stub_sec->output_section->vma); | |
12165 | size = 0; | |
12166 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12167 | size = 4; | |
12168 | off += size; | |
12169 | targ = (stub_entry->target_value | |
12170 | + stub_entry->target_section->output_offset | |
12171 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12172 | odd = off & 4; |
f891966f AM |
12173 | off = targ - off; |
12174 | ||
3d58e1fc AM |
12175 | if (info->emitrelocations) |
12176 | { | |
04bdff6a | 12177 | unsigned int num_rel; |
e10a07b3 | 12178 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12179 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12180 | else |
12181 | num_rel = num_relocs_for_offset (off - 8); | |
12182 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12183 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12184 | } | |
12185 | ||
e10a07b3 | 12186 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12187 | extra = size_power10_offset (off, odd); |
04bdff6a AM |
12188 | else |
12189 | extra = size_offset (off - 8); | |
f891966f AM |
12190 | /* Include branch insn plus those in the offset sequence. */ |
12191 | size += 4 + extra; | |
12192 | /* The branch insn is at the end, or "extra" bytes along. So | |
12193 | its offset will be "extra" bytes less that that already | |
12194 | calculated. */ | |
12195 | off -= extra; | |
12196 | ||
e10a07b3 | 12197 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12198 | { |
12199 | /* After the bcl, lr has been modified so we need to emit | |
12200 | .eh_frame info saying the return address is in r12. */ | |
12201 | lr_used = stub_entry->stub_offset + 8; | |
12202 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12203 | lr_used += 4; | |
12204 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12205 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12206 | DW_CFA_restore_extended 65. */ | |
12207 | delta = lr_used - stub_entry->group->lr_restore; | |
12208 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12209 | stub_entry->group->lr_restore = lr_used + 8; | |
12210 | } | |
f891966f AM |
12211 | |
12212 | /* If the branch can't reach, use a plt_branch. */ | |
12213 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
12214 | { | |
12215 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
12216 | - ppc_stub_long_branch_notoc); | |
12217 | size += 4; | |
12218 | } | |
3d58e1fc AM |
12219 | else if (info->emitrelocations) |
12220 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
12221 | break; |
12222 | ||
12223 | case ppc_stub_plt_call_notoc: | |
12224 | case ppc_stub_plt_call_both: | |
29433886 | 12225 | lr_used = 0; |
12cf8b93 AM |
12226 | if (stub_entry->h != NULL |
12227 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
29433886 AM |
12228 | && htab->params->tls_get_addr_opt) |
12229 | { | |
12230 | lr_used += 7 * 4; | |
12231 | if (!htab->params->no_tls_get_addr_regsave) | |
12232 | lr_used += 11 * 4; | |
12233 | else if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12234 | lr_used += 2 * 4; | |
12235 | } | |
f891966f | 12236 | if (stub_entry->stub_type == ppc_stub_plt_call_both) |
29433886 | 12237 | lr_used += 4; |
f891966f AM |
12238 | targ = stub_entry->plt_ent->plt.offset & ~1; |
12239 | if (targ >= (bfd_vma) -2) | |
12240 | abort (); | |
12241 | ||
12242 | plt = htab->elf.splt; | |
30845f11 | 12243 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
f891966f AM |
12244 | { |
12245 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12246 | plt = htab->elf.iplt; | |
12247 | else | |
12248 | plt = htab->pltlocal; | |
12249 | } | |
12250 | targ += plt->output_offset + plt->output_section->vma; | |
29433886 AM |
12251 | off = (stub_entry->stub_offset |
12252 | + stub_entry->group->stub_sec->output_offset | |
12253 | + stub_entry->group->stub_sec->output_section->vma | |
12254 | + lr_used); | |
04bdff6a | 12255 | odd = off & 4; |
f891966f AM |
12256 | off = targ - off; |
12257 | ||
12258 | if (htab->params->plt_stub_align != 0) | |
12259 | { | |
29433886 | 12260 | unsigned pad = plt_stub_pad (htab, stub_entry, off, odd); |
f891966f AM |
12261 | |
12262 | stub_entry->group->stub_sec->size += pad; | |
12263 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12264 | off -= pad; | |
29433886 | 12265 | odd ^= pad & 4; |
f891966f AM |
12266 | } |
12267 | ||
3d58e1fc AM |
12268 | if (info->emitrelocations) |
12269 | { | |
04bdff6a | 12270 | unsigned int num_rel; |
e10a07b3 | 12271 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12272 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12273 | else |
12274 | num_rel = num_relocs_for_offset (off - 8); | |
12275 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12276 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12277 | } | |
12278 | ||
29433886 | 12279 | size = plt_stub_size (htab, stub_entry, off, odd); |
f891966f | 12280 | |
e10a07b3 | 12281 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12282 | { |
12283 | /* After the bcl, lr has been modified so we need to emit | |
12284 | .eh_frame info saying the return address is in r12. */ | |
29433886 | 12285 | lr_used += stub_entry->stub_offset + 8; |
04bdff6a AM |
12286 | /* The eh_frame info will consist of a DW_CFA_advance_loc or |
12287 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12288 | DW_CFA_restore_extended 65. */ | |
12289 | delta = lr_used - stub_entry->group->lr_restore; | |
12290 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12291 | stub_entry->group->lr_restore = lr_used + 8; | |
12292 | } | |
29433886 AM |
12293 | if ((stub_entry->stub_type == ppc_stub_plt_call_notoc |
12294 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
12cf8b93 | 12295 | && stub_entry->h != NULL |
29433886 AM |
12296 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
12297 | && htab->params->tls_get_addr_opt) | |
12298 | { | |
12299 | if (!htab->params->no_tls_get_addr_regsave) | |
12300 | { | |
12301 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12302 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12303 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12304 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12305 | stub_entry->group->lr_restore | |
12306 | = stub_entry->stub_offset + size - 4; | |
12307 | } | |
12308 | else if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12309 | { | |
12310 | lr_used = stub_entry->stub_offset + size - 20; | |
12311 | delta = lr_used - stub_entry->group->lr_restore; | |
12312 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12313 | stub_entry->group->lr_restore | |
12314 | = stub_entry->stub_offset + size - 4; | |
12315 | } | |
12316 | } | |
f891966f AM |
12317 | break; |
12318 | ||
12319 | case ppc_stub_plt_call: | |
12320 | case ppc_stub_plt_call_r2save: | |
12321 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
12322 | if (targ >= (bfd_vma) -2) | |
12323 | abort (); | |
12324 | plt = htab->elf.splt; | |
30845f11 | 12325 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
f891966f AM |
12326 | { |
12327 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12328 | plt = htab->elf.iplt; | |
12329 | else | |
12330 | plt = htab->pltlocal; | |
12331 | } | |
12332 | targ += plt->output_offset + plt->output_section->vma; | |
12333 | ||
12334 | off = (elf_gp (info->output_bfd) | |
12335 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12336 | off = targ - off; | |
12337 | ||
12338 | if (htab->params->plt_stub_align != 0) | |
12339 | { | |
29433886 | 12340 | unsigned pad = plt_stub_pad (htab, stub_entry, off, 0); |
f891966f AM |
12341 | |
12342 | stub_entry->group->stub_sec->size += pad; | |
12343 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12344 | } | |
12345 | ||
12346 | if (info->emitrelocations) | |
12347 | { | |
12348 | stub_entry->group->stub_sec->reloc_count | |
12349 | += ((PPC_HA (off) != 0) | |
12350 | + (htab->opd_abi | |
12351 | ? 2 + (htab->params->plt_static_chain | |
12352 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12353 | : 1)); | |
12354 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12355 | } | |
12356 | ||
29433886 | 12357 | size = plt_stub_size (htab, stub_entry, off, 0); |
f891966f AM |
12358 | |
12359 | if (stub_entry->h != NULL | |
ed7007c1 | 12360 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
f891966f AM |
12361 | && htab->params->tls_get_addr_opt |
12362 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
12363 | { | |
29433886 AM |
12364 | if (!htab->params->no_tls_get_addr_regsave) |
12365 | { | |
12366 | /* Adjustments to r1 need to be described. */ | |
12367 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12368 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12369 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12370 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12371 | } | |
12372 | else | |
9e7028aa AM |
12373 | { |
12374 | lr_used = stub_entry->stub_offset + size - 20; | |
12375 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
12376 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12377 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12378 | delta = lr_used - stub_entry->group->lr_restore; | |
12379 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12380 | } | |
29433886 | 12381 | stub_entry->group->lr_restore = stub_entry->stub_offset + size - 4; |
f891966f AM |
12382 | } |
12383 | break; | |
12384 | ||
12385 | default: | |
12386 | BFD_FAIL (); | |
0a1b45a2 | 12387 | return false; |
721956f4 AM |
12388 | } |
12389 | ||
6f20ed8a | 12390 | stub_entry->group->stub_sec->size += size; |
0a1b45a2 | 12391 | return true; |
721956f4 AM |
12392 | } |
12393 | ||
12394 | /* Set up various things so that we can make a list of input sections | |
12395 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12396 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12397 | |
12398 | int | |
e7d1c40c | 12399 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12400 | { |
6f20ed8a | 12401 | unsigned int id; |
986f0783 | 12402 | size_t amt; |
721956f4 AM |
12403 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12404 | ||
4dfe6ac6 NC |
12405 | if (htab == NULL) |
12406 | return -1; | |
4c52953f | 12407 | |
7cf7fcc8 | 12408 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12409 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12410 | htab->sec_info = bfd_zmalloc (amt); | |
12411 | if (htab->sec_info == NULL) | |
721956f4 AM |
12412 | return -1; |
12413 | ||
3d6f9012 AM |
12414 | /* Set toc_off for com, und, abs and ind sections. */ |
12415 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12416 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12417 | |
721956f4 AM |
12418 | return 1; |
12419 | } | |
12420 | ||
927be08e AM |
12421 | /* Set up for first pass at multitoc partitioning. */ |
12422 | ||
12423 | void | |
12424 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12425 | { | |
12426 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12427 | ||
1c865ab2 | 12428 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12429 | htab->toc_bfd = NULL; |
12430 | htab->toc_first_sec = NULL; | |
12431 | } | |
12432 | ||
e717da7e AM |
12433 | /* The linker repeatedly calls this function for each TOC input section |
12434 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12435 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12436 | |
0a1b45a2 | 12437 | bool |
4ce794b7 | 12438 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12439 | { |
12440 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12441 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12442 | |
4dfe6ac6 | 12443 | if (htab == NULL) |
0a1b45a2 | 12444 | return false; |
4dfe6ac6 | 12445 | |
927be08e | 12446 | if (!htab->second_toc_pass) |
4c52953f | 12447 | { |
927be08e | 12448 | /* Keep track of the first .toc or .got section for this input bfd. */ |
0a1b45a2 | 12449 | bool new_bfd = htab->toc_bfd != isec->owner; |
a4fd3de5 AM |
12450 | |
12451 | if (new_bfd) | |
bf102f86 AM |
12452 | { |
12453 | htab->toc_bfd = isec->owner; | |
12454 | htab->toc_first_sec = isec; | |
12455 | } | |
927be08e | 12456 | |
bf102f86 AM |
12457 | addr = isec->output_offset + isec->output_section->vma; |
12458 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12459 | limit = 0x80008000; |
12460 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12461 | limit = 0x10000; | |
12462 | if (off + isec->size > limit) | |
bf102f86 AM |
12463 | { |
12464 | addr = (htab->toc_first_sec->output_offset | |
12465 | + htab->toc_first_sec->output_section->vma); | |
12466 | htab->toc_curr = addr; | |
a27e685f | 12467 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12468 | } |
99877b66 | 12469 | |
927be08e AM |
12470 | /* toc_curr is the base address of this toc group. Set elf_gp |
12471 | for the input section to be the offset relative to the | |
12472 | output toc base plus 0x8000. Making the input elf_gp an | |
12473 | offset allows us to move the toc as a whole without | |
12474 | recalculating input elf_gp. */ | |
06bcf541 | 12475 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12476 | off += TOC_BASE_OFF; |
12477 | ||
12478 | /* Die if someone uses a linker script that doesn't keep input | |
12479 | file .toc and .got together. */ | |
a4fd3de5 AM |
12480 | if (new_bfd |
12481 | && elf_gp (isec->owner) != 0 | |
927be08e | 12482 | && elf_gp (isec->owner) != off) |
0a1b45a2 | 12483 | return false; |
927be08e AM |
12484 | |
12485 | elf_gp (isec->owner) = off; | |
0a1b45a2 | 12486 | return true; |
4c52953f | 12487 | } |
927be08e AM |
12488 | |
12489 | /* During the second pass toc_first_sec points to the start of | |
12490 | a toc group, and toc_curr is used to track the old elf_gp. | |
12491 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12492 | if (htab->toc_bfd == isec->owner) | |
0a1b45a2 | 12493 | return true; |
927be08e AM |
12494 | htab->toc_bfd = isec->owner; |
12495 | ||
12496 | if (htab->toc_first_sec == NULL | |
12497 | || htab->toc_curr != elf_gp (isec->owner)) | |
12498 | { | |
12499 | htab->toc_curr = elf_gp (isec->owner); | |
12500 | htab->toc_first_sec = isec; | |
12501 | } | |
12502 | addr = (htab->toc_first_sec->output_offset | |
12503 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12504 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12505 | elf_gp (isec->owner) = off; |
12506 | ||
0a1b45a2 | 12507 | return true; |
ad8e1ba5 AM |
12508 | } |
12509 | ||
927be08e AM |
12510 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12511 | symbol H. */ | |
12512 | ||
0a1b45a2 | 12513 | static bool |
927be08e AM |
12514 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) |
12515 | { | |
12516 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 12517 | return true; |
927be08e | 12518 | |
927be08e AM |
12519 | merge_got_entries (&h->got.glist); |
12520 | ||
0a1b45a2 | 12521 | return true; |
927be08e AM |
12522 | } |
12523 | ||
12524 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12525 | symbol H. */ | |
12526 | ||
0a1b45a2 | 12527 | static bool |
927be08e AM |
12528 | reallocate_got (struct elf_link_hash_entry *h, void *inf) |
12529 | { | |
12530 | struct got_entry *gent; | |
12531 | ||
12532 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 12533 | return true; |
927be08e | 12534 | |
927be08e AM |
12535 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12536 | if (!gent->is_indirect) | |
12537 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
0a1b45a2 | 12538 | return true; |
927be08e AM |
12539 | } |
12540 | ||
12541 | /* Called on the first multitoc pass after the last call to | |
12542 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12543 | entries. */ | |
12544 | ||
0a1b45a2 | 12545 | bool |
927be08e | 12546 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) |
ad8e1ba5 AM |
12547 | { |
12548 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e | 12549 | struct bfd *ibfd, *ibfd2; |
0a1b45a2 | 12550 | bool done_something; |
927be08e AM |
12551 | |
12552 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12553 | |
7865406b | 12554 | if (!htab->do_multi_toc) |
0a1b45a2 | 12555 | return false; |
7865406b | 12556 | |
d0fae19d | 12557 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12558 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12559 | ||
12560 | /* And tlsld_got. */ | |
c72f2fb2 | 12561 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12562 | { |
12563 | struct got_entry *ent, *ent2; | |
12564 | ||
12565 | if (!is_ppc64_elf (ibfd)) | |
12566 | continue; | |
12567 | ||
12568 | ent = ppc64_tlsld_got (ibfd); | |
12569 | if (!ent->is_indirect | |
12570 | && ent->got.offset != (bfd_vma) -1) | |
12571 | { | |
c72f2fb2 | 12572 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12573 | { |
12574 | if (!is_ppc64_elf (ibfd2)) | |
12575 | continue; | |
12576 | ||
12577 | ent2 = ppc64_tlsld_got (ibfd2); | |
12578 | if (!ent2->is_indirect | |
12579 | && ent2->got.offset != (bfd_vma) -1 | |
12580 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12581 | { | |
0a1b45a2 | 12582 | ent2->is_indirect = true; |
927be08e AM |
12583 | ent2->got.ent = ent; |
12584 | } | |
12585 | } | |
12586 | } | |
12587 | } | |
12588 | ||
12589 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12590 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12591 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12592 | htab->got_reli_size = 0; |
12593 | ||
c72f2fb2 | 12594 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12595 | { |
12596 | asection *got, *relgot; | |
12597 | ||
12598 | if (!is_ppc64_elf (ibfd)) | |
12599 | continue; | |
12600 | ||
12601 | got = ppc64_elf_tdata (ibfd)->got; | |
12602 | if (got != NULL) | |
12603 | { | |
12604 | got->rawsize = got->size; | |
12605 | got->size = 0; | |
12606 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12607 | relgot->rawsize = relgot->size; | |
12608 | relgot->size = 0; | |
12609 | } | |
12610 | } | |
12611 | ||
12612 | /* Now reallocate the got, local syms first. We don't need to | |
12613 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12614 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12615 | { |
12616 | struct got_entry **lgot_ents; | |
12617 | struct got_entry **end_lgot_ents; | |
12618 | struct plt_entry **local_plt; | |
12619 | struct plt_entry **end_local_plt; | |
f961d9dd | 12620 | unsigned char *lgot_masks; |
927be08e AM |
12621 | bfd_size_type locsymcount; |
12622 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12623 | asection *s; |
927be08e AM |
12624 | |
12625 | if (!is_ppc64_elf (ibfd)) | |
12626 | continue; | |
12627 | ||
12628 | lgot_ents = elf_local_got_ents (ibfd); | |
12629 | if (!lgot_ents) | |
12630 | continue; | |
12631 | ||
12632 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12633 | locsymcount = symtab_hdr->sh_info; | |
12634 | end_lgot_ents = lgot_ents + locsymcount; | |
12635 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12636 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12637 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12638 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12639 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12640 | { | |
12641 | struct got_entry *ent; | |
12642 | ||
12643 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12644 | { |
19e08130 AM |
12645 | unsigned int ent_size = 8; |
12646 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12647 | ||
d0fae19d AM |
12648 | ent->got.offset = s->size; |
12649 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12650 | { |
19e08130 AM |
12651 | ent_size *= 2; |
12652 | rel_size *= 2; | |
12653 | } | |
12654 | s->size += ent_size; | |
37da22e5 | 12655 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12656 | { |
33e44f2e | 12657 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12658 | htab->got_reli_size += rel_size; |
12659 | } | |
6a3858a6 | 12660 | else if (bfd_link_pic (info) |
f749f26e | 12661 | && !(ent->tls_type != 0 |
6a3858a6 | 12662 | && bfd_link_executable (info))) |
19e08130 AM |
12663 | { |
12664 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12665 | srel->size += rel_size; | |
d0fae19d AM |
12666 | } |
12667 | } | |
927be08e AM |
12668 | } |
12669 | } | |
12670 | ||
12671 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12672 | ||
c72f2fb2 | 12673 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12674 | { |
12675 | struct got_entry *ent; | |
12676 | ||
12677 | if (!is_ppc64_elf (ibfd)) | |
12678 | continue; | |
12679 | ||
12680 | ent = ppc64_tlsld_got (ibfd); | |
12681 | if (!ent->is_indirect | |
12682 | && ent->got.offset != (bfd_vma) -1) | |
12683 | { | |
12684 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12685 | ent->got.offset = s->size; | |
12686 | s->size += 16; | |
f749f26e | 12687 | if (bfd_link_dll (info)) |
927be08e AM |
12688 | { |
12689 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12690 | srel->size += sizeof (Elf64_External_Rela); | |
12691 | } | |
12692 | } | |
12693 | } | |
12694 | ||
33e44f2e | 12695 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12696 | if (!done_something) |
c72f2fb2 | 12697 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12698 | { |
12699 | asection *got; | |
12700 | ||
12701 | if (!is_ppc64_elf (ibfd)) | |
12702 | continue; | |
12703 | ||
12704 | got = ppc64_elf_tdata (ibfd)->got; | |
12705 | if (got != NULL) | |
12706 | { | |
12707 | done_something = got->rawsize != got->size; | |
12708 | if (done_something) | |
12709 | break; | |
12710 | } | |
12711 | } | |
12712 | ||
12713 | if (done_something) | |
e7d1c40c | 12714 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12715 | |
12716 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12717 | on input sections. */ | |
12718 | htab->toc_bfd = NULL; | |
12719 | htab->toc_first_sec = NULL; | |
0a1b45a2 | 12720 | htab->second_toc_pass = true; |
927be08e AM |
12721 | return done_something; |
12722 | } | |
12723 | ||
12724 | /* Called after second pass of multitoc partitioning. */ | |
12725 | ||
12726 | void | |
12727 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12728 | { | |
12729 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12730 | ||
12731 | /* After the second pass, toc_curr tracks the TOC offset used | |
12732 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12733 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12734 | } |
12735 | ||
9b5ecbd0 AM |
12736 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12737 | calls, then there's no need to use toc adjusting stubs when branching | |
12738 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12739 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12740 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12741 | for a stub was detected. If called from the top level, a return of | |
12742 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12743 | |
12744 | static int | |
4ce794b7 | 12745 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12746 | { |
9b5ecbd0 | 12747 | int ret; |
70cc837d AM |
12748 | |
12749 | /* Mark this section as checked. */ | |
12750 | isec->call_check_done = 1; | |
9b5ecbd0 | 12751 | |
772119ce AM |
12752 | /* We know none of our code bearing sections will need toc stubs. */ |
12753 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12754 | return 0; | |
12755 | ||
eea6121a | 12756 | if (isec->size == 0) |
082c50f8 AM |
12757 | return 0; |
12758 | ||
4c52953f AM |
12759 | if (isec->output_section == NULL) |
12760 | return 0; | |
12761 | ||
4c52953f | 12762 | ret = 0; |
70cc837d | 12763 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12764 | { |
70cc837d AM |
12765 | Elf_Internal_Rela *relstart, *rel; |
12766 | Elf_Internal_Sym *local_syms; | |
12767 | struct ppc_link_hash_table *htab; | |
2917689a | 12768 | |
70cc837d AM |
12769 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12770 | info->keep_memory); | |
12771 | if (relstart == NULL) | |
12772 | return -1; | |
90aecf7a | 12773 | |
70cc837d AM |
12774 | /* Look for branches to outside of this section. */ |
12775 | local_syms = NULL; | |
12776 | htab = ppc_hash_table (info); | |
12777 | if (htab == NULL) | |
12778 | return -1; | |
4c52953f | 12779 | |
70cc837d | 12780 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12781 | { |
70cc837d AM |
12782 | enum elf_ppc64_reloc_type r_type; |
12783 | unsigned long r_symndx; | |
12784 | struct elf_link_hash_entry *h; | |
12785 | struct ppc_link_hash_entry *eh; | |
12786 | Elf_Internal_Sym *sym; | |
12787 | asection *sym_sec; | |
12788 | struct _opd_sec_data *opd; | |
12789 | bfd_vma sym_value; | |
12790 | bfd_vma dest; | |
12791 | ||
12792 | r_type = ELF64_R_TYPE (rel->r_info); | |
12793 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12794 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12795 | && r_type != R_PPC64_REL14 |
12796 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12797 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12798 | && r_type != R_PPC64_PLTCALL |
12799 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12800 | continue; |
4c52953f | 12801 | |
70cc837d AM |
12802 | r_symndx = ELF64_R_SYM (rel->r_info); |
12803 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12804 | isec->owner)) | |
4c52953f | 12805 | { |
70cc837d AM |
12806 | ret = -1; |
12807 | break; | |
12808 | } | |
4c52953f | 12809 | |
70cc837d AM |
12810 | /* Calls to dynamic lib functions go through a plt call stub |
12811 | that uses r2. */ | |
ed7007c1 | 12812 | eh = ppc_elf_hash_entry (h); |
70cc837d AM |
12813 | if (eh != NULL |
12814 | && (eh->elf.plt.plist != NULL | |
12815 | || (eh->oh != NULL | |
12816 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12817 | { | |
12818 | ret = 1; | |
12819 | break; | |
4c52953f AM |
12820 | } |
12821 | ||
70cc837d AM |
12822 | if (sym_sec == NULL) |
12823 | /* Ignore other undefined symbols. */ | |
4c52953f | 12824 | continue; |
4c52953f | 12825 | |
70cc837d AM |
12826 | /* Assume branches to other sections not included in the |
12827 | link need stubs too, to cover -R and absolute syms. */ | |
12828 | if (sym_sec->output_section == NULL) | |
12829 | { | |
12830 | ret = 1; | |
12831 | break; | |
12832 | } | |
4c52953f | 12833 | |
70cc837d AM |
12834 | if (h == NULL) |
12835 | sym_value = sym->st_value; | |
12836 | else | |
12837 | { | |
12838 | if (h->root.type != bfd_link_hash_defined | |
12839 | && h->root.type != bfd_link_hash_defweak) | |
12840 | abort (); | |
12841 | sym_value = h->root.u.def.value; | |
12842 | } | |
12843 | sym_value += rel->r_addend; | |
4c52953f | 12844 | |
70cc837d AM |
12845 | /* If this branch reloc uses an opd sym, find the code section. */ |
12846 | opd = get_opd_info (sym_sec); | |
12847 | if (opd != NULL) | |
12848 | { | |
12849 | if (h == NULL && opd->adjust != NULL) | |
12850 | { | |
12851 | long adjust; | |
4c52953f | 12852 | |
92a9c616 | 12853 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12854 | if (adjust == -1) |
12855 | /* Assume deleted functions won't ever be called. */ | |
12856 | continue; | |
12857 | sym_value += adjust; | |
12858 | } | |
4c52953f | 12859 | |
aef36ac1 | 12860 | dest = opd_entry_value (sym_sec, sym_value, |
0a1b45a2 | 12861 | &sym_sec, NULL, false); |
70cc837d AM |
12862 | if (dest == (bfd_vma) -1) |
12863 | continue; | |
12864 | } | |
12865 | else | |
12866 | dest = (sym_value | |
12867 | + sym_sec->output_offset | |
12868 | + sym_sec->output_section->vma); | |
4c52953f | 12869 | |
70cc837d AM |
12870 | /* Ignore branch to self. */ |
12871 | if (sym_sec == isec) | |
12872 | continue; | |
4c52953f | 12873 | |
70cc837d AM |
12874 | /* If the called function uses the toc, we need a stub. */ |
12875 | if (sym_sec->has_toc_reloc | |
12876 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12877 | { |
70cc837d | 12878 | ret = 1; |
4c52953f AM |
12879 | break; |
12880 | } | |
70cc837d AM |
12881 | |
12882 | /* Assume any branch that needs a long branch stub might in fact | |
12883 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12884 | else if (dest - (isec->output_offset | |
12885 | + isec->output_section->vma | |
6911b7dc AM |
12886 | + rel->r_offset) + (1 << 25) |
12887 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12888 | ? h->other | |
12889 | : sym->st_other)) | |
4c52953f | 12890 | { |
70cc837d AM |
12891 | ret = 1; |
12892 | break; | |
12893 | } | |
12894 | ||
12895 | /* If calling back to a section in the process of being | |
12896 | tested, we can't say for sure that no toc adjusting stubs | |
12897 | are needed, so don't return zero. */ | |
12898 | else if (sym_sec->call_check_in_progress) | |
12899 | ret = 2; | |
12900 | ||
12901 | /* Branches to another section that itself doesn't have any TOC | |
12902 | references are OK. Recursively call ourselves to check. */ | |
12903 | else if (!sym_sec->call_check_done) | |
12904 | { | |
12905 | int recur; | |
12906 | ||
12907 | /* Mark current section as indeterminate, so that other | |
12908 | sections that call back to current won't be marked as | |
12909 | known. */ | |
12910 | isec->call_check_in_progress = 1; | |
12911 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12912 | isec->call_check_in_progress = 0; | |
12913 | ||
4c52953f AM |
12914 | if (recur != 0) |
12915 | { | |
70cc837d AM |
12916 | ret = recur; |
12917 | if (recur != 2) | |
12918 | break; | |
4c52953f AM |
12919 | } |
12920 | } | |
4c52953f | 12921 | } |
70cc837d | 12922 | |
c9594989 AM |
12923 | if (elf_symtab_hdr (isec->owner).contents |
12924 | != (unsigned char *) local_syms) | |
70cc837d AM |
12925 | free (local_syms); |
12926 | if (elf_section_data (isec)->relocs != relstart) | |
12927 | free (relstart); | |
9b5ecbd0 AM |
12928 | } |
12929 | ||
70cc837d AM |
12930 | if ((ret & 1) == 0 |
12931 | && isec->map_head.s != NULL | |
12932 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12933 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12934 | { | |
12935 | if (isec->map_head.s->has_toc_reloc | |
12936 | || isec->map_head.s->makes_toc_func_call) | |
12937 | ret = 1; | |
12938 | else if (!isec->map_head.s->call_check_done) | |
12939 | { | |
12940 | int recur; | |
12941 | isec->call_check_in_progress = 1; | |
12942 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12943 | isec->call_check_in_progress = 0; | |
12944 | if (recur != 0) | |
12945 | ret = recur; | |
12946 | } | |
12947 | } | |
12948 | ||
12949 | if (ret == 1) | |
12950 | isec->makes_toc_func_call = 1; | |
4c52953f | 12951 | |
9b5ecbd0 AM |
12952 | return ret; |
12953 | } | |
12954 | ||
721956f4 AM |
12955 | /* The linker repeatedly calls this function for each input section, |
12956 | in the order that input sections are linked into output sections. | |
12957 | Build lists of input sections to determine groupings between which | |
12958 | we may insert linker stubs. */ | |
12959 | ||
0a1b45a2 | 12960 | bool |
4ce794b7 | 12961 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12962 | { |
12963 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12964 | ||
4dfe6ac6 | 12965 | if (htab == NULL) |
0a1b45a2 | 12966 | return false; |
4dfe6ac6 | 12967 | |
734b6cf9 | 12968 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12969 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12970 | { |
3d6f9012 AM |
12971 | /* This happens to make the list in reverse order, |
12972 | which is what we want. */ | |
6f20ed8a AM |
12973 | htab->sec_info[isec->id].u.list |
12974 | = htab->sec_info[isec->output_section->id].u.list; | |
12975 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12976 | } |
ad8e1ba5 | 12977 | |
4c52953f | 12978 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12979 | { |
8b974ba3 AM |
12980 | /* Analyse sections that aren't already flagged as needing a |
12981 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12982 | .fixup contains branches, but only back to the function that | |
12983 | hit an exception. */ | |
12984 | if (!(isec->has_toc_reloc | |
12985 | || (isec->flags & SEC_CODE) == 0 | |
12986 | || strcmp (isec->name, ".fixup") == 0 | |
12987 | || isec->call_check_done)) | |
12988 | { | |
12989 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
0a1b45a2 | 12990 | return false; |
8b974ba3 AM |
12991 | } |
12992 | /* Make all sections use the TOC assigned for this object file. | |
12993 | This will be wrong for pasted sections; We fix that in | |
12994 | check_pasted_section(). */ | |
12995 | if (elf_gp (isec->owner) != 0) | |
12996 | htab->toc_curr = elf_gp (isec->owner); | |
12997 | } | |
12998 | ||
6f20ed8a | 12999 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
0a1b45a2 | 13000 | return true; |
721956f4 AM |
13001 | } |
13002 | ||
70cc837d AM |
13003 | /* Check that all .init and .fini sections use the same toc, if they |
13004 | have toc relocs. */ | |
13005 | ||
0a1b45a2 | 13006 | static bool |
70cc837d AM |
13007 | check_pasted_section (struct bfd_link_info *info, const char *name) |
13008 | { | |
13009 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
13010 | ||
13011 | if (o != NULL) | |
13012 | { | |
13013 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13014 | bfd_vma toc_off = 0; | |
13015 | asection *i; | |
13016 | ||
13017 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
13018 | if (i->has_toc_reloc) | |
13019 | { | |
13020 | if (toc_off == 0) | |
6f20ed8a AM |
13021 | toc_off = htab->sec_info[i->id].toc_off; |
13022 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
0a1b45a2 | 13023 | return false; |
70cc837d | 13024 | } |
6683a28d AM |
13025 | |
13026 | if (toc_off == 0) | |
13027 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
13028 | if (i->makes_toc_func_call) | |
13029 | { | |
6f20ed8a | 13030 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
13031 | break; |
13032 | } | |
13033 | ||
70cc837d AM |
13034 | /* Make sure the whole pasted function uses the same toc offset. */ |
13035 | if (toc_off != 0) | |
13036 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 13037 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d | 13038 | } |
0a1b45a2 | 13039 | return true; |
70cc837d AM |
13040 | } |
13041 | ||
0a1b45a2 | 13042 | bool |
70cc837d AM |
13043 | ppc64_elf_check_init_fini (struct bfd_link_info *info) |
13044 | { | |
13045 | return (check_pasted_section (info, ".init") | |
13046 | & check_pasted_section (info, ".fini")); | |
13047 | } | |
13048 | ||
721956f4 AM |
13049 | /* See whether we can group stub sections together. Grouping stub |
13050 | sections may result in fewer stubs. More importantly, we need to | |
13051 | put all .init* and .fini* stubs at the beginning of the .init or | |
13052 | .fini output sections respectively, because glibc splits the | |
13053 | _init and _fini functions into multiple parts. Putting a stub in | |
13054 | the middle of a function is not a good idea. */ | |
13055 | ||
0a1b45a2 | 13056 | static bool |
6f20ed8a | 13057 | group_sections (struct bfd_link_info *info, |
4ce794b7 | 13058 | bfd_size_type stub_group_size, |
0a1b45a2 | 13059 | bool stubs_always_before_branch) |
721956f4 | 13060 | { |
6f20ed8a AM |
13061 | struct ppc_link_hash_table *htab; |
13062 | asection *osec; | |
0a1b45a2 | 13063 | bool suppress_size_errors; |
7c8fe5c4 | 13064 | |
6f20ed8a AM |
13065 | htab = ppc_hash_table (info); |
13066 | if (htab == NULL) | |
0a1b45a2 | 13067 | return false; |
6f20ed8a | 13068 | |
0a1b45a2 | 13069 | suppress_size_errors = false; |
7c8fe5c4 AM |
13070 | if (stub_group_size == 1) |
13071 | { | |
13072 | /* Default values. */ | |
13073 | if (stubs_always_before_branch) | |
09f92717 | 13074 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 13075 | else |
09f92717 | 13076 | stub_group_size = 0x1c00000; |
0a1b45a2 | 13077 | suppress_size_errors = true; |
7c8fe5c4 AM |
13078 | } |
13079 | ||
6f20ed8a | 13080 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 13081 | { |
6f20ed8a AM |
13082 | asection *tail; |
13083 | ||
13084 | if (osec->id >= htab->sec_info_arr_size) | |
13085 | continue; | |
13086 | ||
13087 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 13088 | while (tail != NULL) |
721956f4 | 13089 | { |
734b6cf9 AM |
13090 | asection *curr; |
13091 | asection *prev; | |
13092 | bfd_size_type total; | |
0a1b45a2 | 13093 | bool big_sec; |
734b6cf9 | 13094 | bfd_vma curr_toc; |
6f20ed8a | 13095 | struct map_stub *group; |
09f92717 | 13096 | bfd_size_type group_size; |
734b6cf9 AM |
13097 | |
13098 | curr = tail; | |
eea6121a | 13099 | total = tail->size; |
09f92717 AM |
13100 | group_size = (ppc64_elf_section_data (tail) != NULL |
13101 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
13102 | ? stub_group_size >> 10 : stub_group_size); | |
13103 | ||
13104 | big_sec = total > group_size; | |
7c8fe5c4 | 13105 | if (big_sec && !suppress_size_errors) |
695344c0 | 13106 | /* xgettext:c-format */ |
871b3ab2 | 13107 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 13108 | tail->owner, tail); |
6f20ed8a | 13109 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 13110 | |
6f20ed8a | 13111 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 13112 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
13113 | < (ppc64_elf_section_data (prev) != NULL |
13114 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 13115 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 13116 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13117 | curr = prev; |
13118 | ||
13119 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 13120 | than group_size and thus can be handled by one stub |
734b6cf9 | 13121 | section. (or the tail section is itself larger than |
09f92717 AM |
13122 | group_size, in which case we may be toast.) We should |
13123 | really be keeping track of the total size of stubs added | |
13124 | here, as stubs contribute to the final output section | |
13125 | size. That's a little tricky, and this way will only | |
13126 | break if stubs added make the total size more than 2^25, | |
13127 | ie. for the default stub_group_size, if stubs total more | |
13128 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
13129 | group = bfd_alloc (curr->owner, sizeof (*group)); |
13130 | if (group == NULL) | |
0a1b45a2 | 13131 | return false; |
6f20ed8a AM |
13132 | group->link_sec = curr; |
13133 | group->stub_sec = NULL; | |
a4b6fadd | 13134 | group->needs_save_res = 0; |
df136d64 AM |
13135 | group->lr_restore = 0; |
13136 | group->eh_size = 0; | |
13137 | group->eh_base = 0; | |
a4b6fadd AM |
13138 | group->next = htab->group; |
13139 | htab->group = group; | |
734b6cf9 | 13140 | do |
721956f4 | 13141 | { |
6f20ed8a | 13142 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 13143 | /* Set up this stub group. */ |
6f20ed8a | 13144 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 13145 | } |
734b6cf9 AM |
13146 | while (tail != curr && (tail = prev) != NULL); |
13147 | ||
09f92717 | 13148 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
13149 | bytes before the stub section can be handled by it too. |
13150 | Don't do this if we have a really large section after the | |
13151 | stubs, as adding more stubs increases the chance that | |
13152 | branches may not reach into the stub section. */ | |
13153 | if (!stubs_always_before_branch && !big_sec) | |
13154 | { | |
13155 | total = 0; | |
13156 | while (prev != NULL | |
13157 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
13158 | < (ppc64_elf_section_data (prev) != NULL |
13159 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
13160 | ? (group_size = stub_group_size >> 10) |
13161 | : group_size)) | |
6f20ed8a | 13162 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13163 | { |
13164 | tail = prev; | |
6f20ed8a AM |
13165 | prev = htab->sec_info[tail->id].u.list; |
13166 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
13167 | } |
13168 | } | |
13169 | tail = prev; | |
721956f4 AM |
13170 | } |
13171 | } | |
0a1b45a2 | 13172 | return true; |
721956f4 AM |
13173 | } |
13174 | ||
58d180e8 AM |
13175 | static const unsigned char glink_eh_frame_cie[] = |
13176 | { | |
13177 | 0, 0, 0, 16, /* length. */ | |
13178 | 0, 0, 0, 0, /* id. */ | |
13179 | 1, /* CIE version. */ | |
13180 | 'z', 'R', 0, /* Augmentation string. */ | |
13181 | 4, /* Code alignment. */ | |
13182 | 0x78, /* Data alignment. */ | |
13183 | 65, /* RA reg. */ | |
13184 | 1, /* Augmentation size. */ | |
13185 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13186 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13187 | }; |
13188 | ||
d969d15f AM |
13189 | /* Stripping output sections is normally done before dynamic section |
13190 | symbols have been allocated. This function is called later, and | |
13191 | handles cases like htab->brlt which is mapped to its own output | |
13192 | section. */ | |
13193 | ||
13194 | static void | |
13195 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13196 | { | |
13197 | if (isec->size == 0 | |
13198 | && isec->output_section->size == 0 | |
53d8967a | 13199 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13200 | && !bfd_section_removed_from_list (info->output_bfd, |
13201 | isec->output_section) | |
13202 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13203 | { | |
13204 | isec->output_section->flags |= SEC_EXCLUDE; | |
13205 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13206 | info->output_bfd->section_count--; | |
13207 | } | |
13208 | } | |
13209 | ||
721956f4 AM |
13210 | /* Determine and set the size of the stub section for a final link. |
13211 | ||
13212 | The basic idea here is to examine all the relocations looking for | |
13213 | PC-relative calls to a target that is unreachable with a "bl" | |
13214 | instruction. */ | |
13215 | ||
0a1b45a2 | 13216 | bool |
e7d1c40c | 13217 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13218 | { |
13219 | bfd_size_type stub_group_size; | |
0a1b45a2 | 13220 | bool stubs_always_before_branch; |
721956f4 AM |
13221 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13222 | ||
4dfe6ac6 | 13223 | if (htab == NULL) |
0a1b45a2 | 13224 | return false; |
4dfe6ac6 | 13225 | |
e10a07b3 AM |
13226 | if (htab->params->power10_stubs == -1 && !htab->has_power10_relocs) |
13227 | htab->params->power10_stubs = 0; | |
13228 | ||
0e1862bb | 13229 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13230 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13231 | if (!htab->opd_abi) |
e7d1c40c AM |
13232 | htab->params->plt_thread_safe = 0; |
13233 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13234 | { |
e2458743 | 13235 | static const char *const thread_starter[] = |
794e51c0 AM |
13236 | { |
13237 | "pthread_create", | |
13238 | /* libstdc++ */ | |
13239 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13240 | /* librt */ | |
13241 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13242 | "mq_notify", "create_timer", | |
13243 | /* libanl */ | |
13244 | "getaddrinfo_a", | |
13245 | /* libgomp */ | |
2300b5a1 | 13246 | "GOMP_parallel", |
794e51c0 | 13247 | "GOMP_parallel_start", |
2300b5a1 | 13248 | "GOMP_parallel_loop_static", |
794e51c0 | 13249 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13250 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13251 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13252 | "GOMP_parallel_loop_guided", |
794e51c0 | 13253 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13254 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13255 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13256 | "GOMP_parallel_sections", |
68ffbac6 | 13257 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13258 | /* libgo */ |
13259 | "__go_go", | |
794e51c0 AM |
13260 | }; |
13261 | unsigned i; | |
13262 | ||
a4b6fadd | 13263 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13264 | { |
13265 | struct elf_link_hash_entry *h; | |
13266 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
0a1b45a2 | 13267 | false, false, true); |
e7d1c40c AM |
13268 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13269 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13270 | break; |
13271 | } | |
13272 | } | |
e7d1c40c AM |
13273 | stubs_always_before_branch = htab->params->group_size < 0; |
13274 | if (htab->params->group_size < 0) | |
13275 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13276 | else |
e7d1c40c | 13277 | stub_group_size = htab->params->group_size; |
721956f4 | 13278 | |
6f20ed8a | 13279 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
0a1b45a2 | 13280 | return false; |
721956f4 | 13281 | |
a804e476 AM |
13282 | htab->tga_group = NULL; |
13283 | if (!htab->params->no_tls_get_addr_regsave | |
13284 | && htab->tga_desc_fd != NULL | |
13285 | && (htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefined | |
13286 | || htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefweak) | |
13287 | && htab->tls_get_addr_fd != NULL | |
13288 | && is_static_defined (&htab->tls_get_addr_fd->elf)) | |
13289 | { | |
13290 | asection *sym_sec, *code_sec, *stub_sec; | |
13291 | bfd_vma sym_value; | |
13292 | struct _opd_sec_data *opd; | |
13293 | ||
13294 | sym_sec = htab->tls_get_addr_fd->elf.root.u.def.section; | |
13295 | sym_value = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
13296 | code_sec = sym_sec; | |
13297 | opd = get_opd_info (sym_sec); | |
13298 | if (opd != NULL) | |
0a1b45a2 | 13299 | opd_entry_value (sym_sec, sym_value, &code_sec, NULL, false); |
a804e476 AM |
13300 | htab->tga_group = htab->sec_info[code_sec->id].u.group; |
13301 | stub_sec = (*htab->params->add_stub_section) (".tga_desc.stub", | |
13302 | htab->tga_group->link_sec); | |
13303 | if (stub_sec == NULL) | |
0a1b45a2 | 13304 | return false; |
a804e476 AM |
13305 | htab->tga_group->stub_sec = stub_sec; |
13306 | ||
13307 | htab->tga_desc_fd->elf.root.type = bfd_link_hash_defined; | |
13308 | htab->tga_desc_fd->elf.root.u.def.section = stub_sec; | |
13309 | htab->tga_desc_fd->elf.root.u.def.value = 0; | |
13310 | htab->tga_desc_fd->elf.type = STT_FUNC; | |
13311 | htab->tga_desc_fd->elf.def_regular = 1; | |
13312 | htab->tga_desc_fd->elf.non_elf = 0; | |
0a1b45a2 | 13313 | _bfd_elf_link_hash_hide_symbol (info, &htab->tga_desc_fd->elf, true); |
a804e476 AM |
13314 | } |
13315 | ||
c9301e31 AM |
13316 | #define STUB_SHRINK_ITER 20 |
13317 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
13318 | exit on a stub section shrinking. This is to break out of a | |
13319 | pathological case where adding stubs on one iteration decreases | |
13320 | section gaps (perhaps due to alignment), which then requires | |
13321 | fewer or smaller stubs on the next iteration. */ | |
13322 | ||
721956f4 AM |
13323 | while (1) |
13324 | { | |
13325 | bfd *input_bfd; | |
13326 | unsigned int bfd_indx; | |
a4b6fadd | 13327 | struct map_stub *group; |
721956f4 AM |
13328 | |
13329 | htab->stub_iteration += 1; | |
721956f4 AM |
13330 | |
13331 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13332 | input_bfd != NULL; | |
c72f2fb2 | 13333 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13334 | { |
13335 | Elf_Internal_Shdr *symtab_hdr; | |
13336 | asection *section; | |
6cdc0ccc | 13337 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13338 | |
0c8d6e5c | 13339 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13340 | continue; |
13341 | ||
721956f4 | 13342 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13343 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13344 | if (symtab_hdr->sh_info == 0) |
13345 | continue; | |
13346 | ||
721956f4 AM |
13347 | /* Walk over each section attached to the input bfd. */ |
13348 | for (section = input_bfd->sections; | |
13349 | section != NULL; | |
13350 | section = section->next) | |
13351 | { | |
721956f4 | 13352 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
13353 | |
13354 | /* If there aren't any relocs, then there's nothing more | |
13355 | to do. */ | |
13356 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13357 | || (section->flags & SEC_ALLOC) == 0 |
13358 | || (section->flags & SEC_LOAD) == 0 | |
13359 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
13360 | || section->reloc_count == 0) |
13361 | continue; | |
13362 | ||
13363 | /* If this section is a link-once section that will be | |
13364 | discarded, then don't create any stubs. */ | |
13365 | if (section->output_section == NULL | |
927be08e | 13366 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13367 | continue; |
13368 | ||
1e2f5b6e AM |
13369 | /* Get the relocs. */ |
13370 | internal_relocs | |
4ce794b7 | 13371 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13372 | info->keep_memory); |
721956f4 | 13373 | if (internal_relocs == NULL) |
1e2f5b6e | 13374 | goto error_ret_free_local; |
721956f4 AM |
13375 | |
13376 | /* Now examine each relocation. */ | |
13377 | irela = internal_relocs; | |
13378 | irelaend = irela + section->reloc_count; | |
13379 | for (; irela < irelaend; irela++) | |
13380 | { | |
4ce794b7 AM |
13381 | enum elf_ppc64_reloc_type r_type; |
13382 | unsigned int r_indx; | |
721956f4 AM |
13383 | enum ppc_stub_type stub_type; |
13384 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 13385 | asection *sym_sec, *code_sec; |
e054468f | 13386 | bfd_vma sym_value, code_value; |
721956f4 | 13387 | bfd_vma destination; |
6911b7dc | 13388 | unsigned long local_off; |
0a1b45a2 | 13389 | bool ok_dest; |
721956f4 | 13390 | struct ppc_link_hash_entry *hash; |
8387904d | 13391 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13392 | struct elf_link_hash_entry *h; |
13393 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13394 | char *stub_name; |
13395 | const asection *id_sec; | |
74f0fb50 | 13396 | struct _opd_sec_data *opd; |
e054468f | 13397 | struct plt_entry *plt_ent; |
721956f4 AM |
13398 | |
13399 | r_type = ELF64_R_TYPE (irela->r_info); | |
13400 | r_indx = ELF64_R_SYM (irela->r_info); | |
13401 | ||
4ce794b7 | 13402 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13403 | { |
13404 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13405 | goto error_ret_free_internal; |
721956f4 AM |
13406 | } |
13407 | ||
13408 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 13409 | if (r_type != R_PPC64_REL24 |
05d0e962 | 13410 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
13411 | && r_type != R_PPC64_REL14 |
13412 | && r_type != R_PPC64_REL14_BRTAKEN | |
13413 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
13414 | continue; |
13415 | ||
13416 | /* Now determine the call target, its name, value, | |
13417 | section. */ | |
411e1bfb AM |
13418 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13419 | r_indx, input_bfd)) | |
13420 | goto error_ret_free_internal; | |
ed7007c1 | 13421 | hash = ppc_elf_hash_entry (h); |
411e1bfb | 13422 | |
0a1b45a2 | 13423 | ok_dest = false; |
8387904d | 13424 | fdh = NULL; |
7fe2b9a6 | 13425 | sym_value = 0; |
411e1bfb | 13426 | if (hash == NULL) |
721956f4 | 13427 | { |
411e1bfb | 13428 | sym_value = sym->st_value; |
c27b8c2a AM |
13429 | if (sym_sec != NULL |
13430 | && sym_sec->output_section != NULL) | |
0a1b45a2 | 13431 | ok_dest = true; |
721956f4 | 13432 | } |
7fe2b9a6 AM |
13433 | else if (hash->elf.root.type == bfd_link_hash_defined |
13434 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13435 | { | |
13436 | sym_value = hash->elf.root.u.def.value; | |
13437 | if (sym_sec->output_section != NULL) | |
0a1b45a2 | 13438 | ok_dest = true; |
7fe2b9a6 AM |
13439 | } |
13440 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13441 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13442 | { |
99877b66 | 13443 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13444 | use the func descriptor sym instead if it is |
13445 | defined. */ | |
ceb1f1ef | 13446 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13447 | && hash->oh != NULL) |
8387904d | 13448 | { |
8c5b4e52 | 13449 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13450 | if (fdh->elf.root.type == bfd_link_hash_defined |
13451 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13452 | { | |
13453 | sym_sec = fdh->elf.root.u.def.section; | |
13454 | sym_value = fdh->elf.root.u.def.value; | |
13455 | if (sym_sec->output_section != NULL) | |
0a1b45a2 | 13456 | ok_dest = true; |
8387904d | 13457 | } |
99877b66 AM |
13458 | else |
13459 | fdh = NULL; | |
8387904d | 13460 | } |
7fe2b9a6 AM |
13461 | } |
13462 | else | |
13463 | { | |
13464 | bfd_set_error (bfd_error_bad_value); | |
13465 | goto error_ret_free_internal; | |
721956f4 AM |
13466 | } |
13467 | ||
8843416a | 13468 | destination = 0; |
6911b7dc | 13469 | local_off = 0; |
8843416a AM |
13470 | if (ok_dest) |
13471 | { | |
13472 | sym_value += irela->r_addend; | |
13473 | destination = (sym_value | |
13474 | + sym_sec->output_offset | |
13475 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13476 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13477 | ? hash->elf.other | |
13478 | : sym->st_other); | |
8843416a AM |
13479 | } |
13480 | ||
8387904d | 13481 | code_sec = sym_sec; |
e054468f | 13482 | code_value = sym_value; |
74f0fb50 AM |
13483 | opd = get_opd_info (sym_sec); |
13484 | if (opd != NULL) | |
8387904d AM |
13485 | { |
13486 | bfd_vma dest; | |
13487 | ||
74f0fb50 | 13488 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13489 | { |
51aecdc5 | 13490 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13491 | if (adjust == -1) |
13492 | continue; | |
e054468f | 13493 | code_value += adjust; |
8387904d AM |
13494 | sym_value += adjust; |
13495 | } | |
13496 | dest = opd_entry_value (sym_sec, sym_value, | |
0a1b45a2 | 13497 | &code_sec, &code_value, false); |
8387904d AM |
13498 | if (dest != (bfd_vma) -1) |
13499 | { | |
13500 | destination = dest; | |
13501 | if (fdh != NULL) | |
13502 | { | |
13503 | /* Fixup old ABI sym to point at code | |
13504 | entry. */ | |
99877b66 | 13505 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13506 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13507 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13508 | } |
13509 | } | |
13510 | } | |
13511 | ||
721956f4 | 13512 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13513 | plt_ent = NULL; |
721956f4 | 13514 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13515 | &plt_ent, destination, |
13516 | local_off); | |
ad8e1ba5 | 13517 | |
05d0e962 AM |
13518 | if (r_type == R_PPC64_REL24_NOTOC) |
13519 | { | |
13520 | if (stub_type == ppc_stub_plt_call) | |
13521 | stub_type = ppc_stub_plt_call_notoc; | |
13522 | else if (stub_type == ppc_stub_long_branch | |
13523 | || (code_sec != NULL | |
13524 | && code_sec->output_section != NULL | |
13525 | && (((hash ? hash->elf.other : sym->st_other) | |
13526 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 13527 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
13528 | stub_type = ppc_stub_long_branch_notoc; |
13529 | } | |
13530 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13531 | { |
13532 | /* Check whether we need a TOC adjusting stub. | |
13533 | Since the linker pastes together pieces from | |
13534 | different object files when creating the | |
13535 | _init and _fini functions, it may be that a | |
13536 | call to what looks like a local sym is in | |
13537 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13538 | if ((code_sec != NULL |
13539 | && code_sec->output_section != NULL | |
33cb30a1 | 13540 | && (code_sec->has_toc_reloc |
918dc783 AM |
13541 | || code_sec->makes_toc_func_call) |
13542 | && (htab->sec_info[code_sec->id].toc_off | |
13543 | != htab->sec_info[section->id].toc_off)) | |
33cb30a1 AM |
13544 | || (((hash ? hash->elf.other : sym->st_other) |
13545 | & STO_PPC64_LOCAL_MASK) | |
13546 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13547 | stub_type = ppc_stub_long_branch_r2off; |
13548 | } | |
13549 | ||
721956f4 AM |
13550 | if (stub_type == ppc_stub_none) |
13551 | continue; | |
13552 | ||
411e1bfb AM |
13553 | /* __tls_get_addr calls might be eliminated. */ |
13554 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13555 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13556 | && hash != NULL |
ed7007c1 | 13557 | && is_tls_get_addr (&hash->elf, htab) |
411e1bfb AM |
13558 | && section->has_tls_reloc |
13559 | && irela != internal_relocs) | |
13560 | { | |
13561 | /* Get tls info. */ | |
f961d9dd | 13562 | unsigned char *tls_mask; |
411e1bfb | 13563 | |
3a71aa26 | 13564 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13565 | irela - 1, input_bfd)) |
13566 | goto error_ret_free_internal; | |
abc489c6 AM |
13567 | if ((*tls_mask & TLS_TLS) != 0 |
13568 | && (*tls_mask & (TLS_GD | TLS_LD)) == 0) | |
411e1bfb AM |
13569 | continue; |
13570 | } | |
13571 | ||
f378ab09 | 13572 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13573 | { |
6e1816be AM |
13574 | if (!htab->opd_abi |
13575 | && htab->params->plt_localentry0 != 0 | |
13576 | && is_elfv2_localentry0 (&hash->elf)) | |
13577 | htab->has_plt_localentry0 = 1; | |
13578 | else if (irela + 1 < irelaend | |
13579 | && irela[1].r_offset == irela->r_offset + 4 | |
13580 | && (ELF64_R_TYPE (irela[1].r_info) | |
13581 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13582 | { |
13583 | if (!tocsave_find (htab, INSERT, | |
13584 | &local_syms, irela + 1, input_bfd)) | |
13585 | goto error_ret_free_internal; | |
13586 | } | |
f378ab09 AM |
13587 | else |
13588 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13589 | } |
3b421ab3 | 13590 | |
721956f4 | 13591 | /* Support for grouping stub sections. */ |
6f20ed8a | 13592 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13593 | |
13594 | /* Get the name of this stub. */ | |
13595 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13596 | if (!stub_name) | |
13597 | goto error_ret_free_internal; | |
13598 | ||
13599 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
0a1b45a2 | 13600 | stub_name, false, false); |
721956f4 AM |
13601 | if (stub_entry != NULL) |
13602 | { | |
05d0e962 | 13603 | enum ppc_stub_type old_type; |
e10a07b3 | 13604 | |
05d0e962 AM |
13605 | /* A stub has already been created, but it may |
13606 | not be the required type. We shouldn't be | |
13607 | transitioning from plt_call to long_branch | |
13608 | stubs or vice versa, but we might be | |
13609 | upgrading from plt_call to plt_call_r2save or | |
13610 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13611 | free (stub_name); |
e10a07b3 AM |
13612 | if (htab->params->power10_stubs == -1) |
13613 | { | |
13614 | /* For --power10-stubs=auto, don't merge _notoc | |
13615 | and other varieties of stubs. (The _both | |
13616 | variety won't be created.) */ | |
0a1b45a2 | 13617 | bool notoc = r_type == R_PPC64_REL24_NOTOC; |
e10a07b3 AM |
13618 | struct ppc_stub_hash_entry *alt_stub |
13619 | = select_alt_stub (stub_entry, notoc); | |
13620 | ||
13621 | if (alt_stub == NULL) | |
13622 | { | |
13623 | alt_stub = (struct ppc_stub_hash_entry *) | |
13624 | stub_hash_newfunc (NULL, | |
13625 | &htab->stub_hash_table, | |
13626 | stub_entry->root.string); | |
13627 | if (alt_stub == NULL) | |
13628 | { | |
13629 | /* xgettext:c-format */ | |
13630 | _bfd_error_handler | |
13631 | (_("%pB: cannot create stub entry %s"), | |
13632 | section->owner, stub_entry->root.string); | |
13633 | goto error_ret_free_internal; | |
13634 | } | |
13635 | *alt_stub = *stub_entry; | |
13636 | stub_entry->root.next = &alt_stub->root; | |
13637 | if (notoc) | |
13638 | /* Sort notoc stubs first, for no good | |
13639 | reason. */ | |
13640 | alt_stub = stub_entry; | |
13641 | alt_stub->stub_type = stub_type; | |
13642 | } | |
13643 | stub_entry = alt_stub; | |
13644 | } | |
05d0e962 AM |
13645 | old_type = stub_entry->stub_type; |
13646 | switch (old_type) | |
13647 | { | |
13648 | default: | |
13649 | abort (); | |
13650 | ||
13651 | case ppc_stub_save_res: | |
13652 | continue; | |
13653 | ||
13654 | case ppc_stub_plt_call: | |
13655 | case ppc_stub_plt_call_r2save: | |
13656 | case ppc_stub_plt_call_notoc: | |
13657 | case ppc_stub_plt_call_both: | |
13658 | if (stub_type == ppc_stub_plt_call) | |
13659 | continue; | |
13660 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13661 | { | |
13662 | if (old_type == ppc_stub_plt_call_notoc) | |
13663 | stub_type = ppc_stub_plt_call_both; | |
13664 | } | |
13665 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13666 | { | |
13667 | if (old_type == ppc_stub_plt_call_r2save) | |
13668 | stub_type = ppc_stub_plt_call_both; | |
13669 | } | |
13670 | else | |
13671 | abort (); | |
13672 | break; | |
13673 | ||
13674 | case ppc_stub_plt_branch: | |
13675 | case ppc_stub_plt_branch_r2off: | |
13676 | case ppc_stub_plt_branch_notoc: | |
13677 | case ppc_stub_plt_branch_both: | |
13678 | old_type += (ppc_stub_long_branch | |
13679 | - ppc_stub_plt_branch); | |
13680 | /* Fall through. */ | |
13681 | case ppc_stub_long_branch: | |
13682 | case ppc_stub_long_branch_r2off: | |
13683 | case ppc_stub_long_branch_notoc: | |
13684 | case ppc_stub_long_branch_both: | |
13685 | if (stub_type == ppc_stub_long_branch) | |
13686 | continue; | |
13687 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13688 | { | |
13689 | if (old_type == ppc_stub_long_branch_notoc) | |
13690 | stub_type = ppc_stub_long_branch_both; | |
13691 | } | |
13692 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13693 | { | |
13694 | if (old_type == ppc_stub_long_branch_r2off) | |
13695 | stub_type = ppc_stub_long_branch_both; | |
13696 | } | |
13697 | else | |
13698 | abort (); | |
13699 | break; | |
13700 | } | |
13701 | if (old_type < stub_type) | |
794e51c0 | 13702 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13703 | continue; |
13704 | } | |
13705 | ||
25f53a85 | 13706 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13707 | if (stub_entry == NULL) |
13708 | { | |
13709 | free (stub_name); | |
6cdc0ccc AM |
13710 | error_ret_free_internal: |
13711 | if (elf_section_data (section)->relocs == NULL) | |
13712 | free (internal_relocs); | |
13713 | error_ret_free_local: | |
c9594989 AM |
13714 | if (symtab_hdr->contents |
13715 | != (unsigned char *) local_syms) | |
6cdc0ccc | 13716 | free (local_syms); |
0a1b45a2 | 13717 | return false; |
721956f4 AM |
13718 | } |
13719 | ||
ad8e1ba5 | 13720 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13721 | if (stub_type >= ppc_stub_plt_call |
13722 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13723 | { |
05d0e962 AM |
13724 | stub_entry->target_value = sym_value; |
13725 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13726 | } |
13727 | else | |
13728 | { | |
05d0e962 AM |
13729 | stub_entry->target_value = code_value; |
13730 | stub_entry->target_section = code_sec; | |
e054468f | 13731 | } |
721956f4 | 13732 | stub_entry->h = hash; |
e054468f | 13733 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13734 | stub_entry->symtype |
13735 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13736 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13737 | |
3d58e1fc AM |
13738 | if (hash != NULL |
13739 | && (hash->elf.root.type == bfd_link_hash_defined | |
13740 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13741 | htab->stub_globals += 1; |
721956f4 AM |
13742 | } |
13743 | ||
13744 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13745 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13746 | free (internal_relocs); |
721956f4 | 13747 | } |
6cdc0ccc AM |
13748 | |
13749 | if (local_syms != NULL | |
13750 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13751 | { | |
13752 | if (!info->keep_memory) | |
13753 | free (local_syms); | |
13754 | else | |
13755 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13756 | } | |
721956f4 AM |
13757 | } |
13758 | ||
5c3dead3 | 13759 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13760 | stub sections. */ |
d4aaa2a0 | 13761 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13762 | { |
13763 | group->lr_restore = 0; | |
13764 | group->eh_size = 0; | |
13765 | if (group->stub_sec != NULL) | |
13766 | { | |
13767 | asection *stub_sec = group->stub_sec; | |
13768 | ||
13769 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13770 | || stub_sec->rawsize < stub_sec->size) | |
13771 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13772 | stub_sec->rawsize = stub_sec->size; | |
13773 | stub_sec->size = 0; | |
13774 | stub_sec->reloc_count = 0; | |
13775 | stub_sec->flags &= ~SEC_RELOC; | |
13776 | } | |
13777 | } | |
a804e476 AM |
13778 | if (htab->tga_group != NULL) |
13779 | { | |
13780 | /* See emit_tga_desc and emit_tga_desc_eh_frame. */ | |
13781 | htab->tga_group->eh_size | |
13782 | = 1 + 2 + (htab->opd_abi != 0) + 3 + 8 * 2 + 3 + 8 + 3; | |
13783 | htab->tga_group->lr_restore = 23 * 4; | |
13784 | htab->tga_group->stub_sec->size = 24 * 4; | |
13785 | } | |
eea6121a | 13786 | |
ba21f564 AM |
13787 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13788 | || htab->brlt->rawsize < htab->brlt->size) | |
13789 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13790 | htab->brlt->size = 0; |
84f5d08e AM |
13791 | htab->brlt->reloc_count = 0; |
13792 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13793 | if (htab->relbrlt != NULL) |
eea6121a | 13794 | htab->relbrlt->size = 0; |
721956f4 | 13795 | |
63bc6f6c | 13796 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13797 | |
a4b6fadd AM |
13798 | for (group = htab->group; group != NULL; group = group->next) |
13799 | if (group->needs_save_res) | |
13800 | group->stub_sec->size += htab->sfpr->size; | |
13801 | ||
176a0d42 AM |
13802 | if (info->emitrelocations |
13803 | && htab->glink != NULL && htab->glink->size != 0) | |
13804 | { | |
13805 | htab->glink->reloc_count = 1; | |
13806 | htab->glink->flags |= SEC_RELOC; | |
13807 | } | |
13808 | ||
58d180e8 AM |
13809 | if (htab->glink_eh_frame != NULL |
13810 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13811 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13812 | { |
2e0ce1c8 | 13813 | size_t size = 0, align = 4; |
58d180e8 | 13814 | |
d4aaa2a0 | 13815 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13816 | if (group->eh_size != 0) |
13817 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13818 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13819 | size += (24 + align - 1) & -align; |
58d180e8 | 13820 | if (size != 0) |
2e0ce1c8 AM |
13821 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13822 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13823 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13824 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13825 | htab->glink_eh_frame->size = size; | |
13826 | } | |
13827 | ||
e7d1c40c | 13828 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13829 | for (group = htab->group; group != NULL; group = group->next) |
13830 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13831 | { |
13832 | int align = abs (htab->params->plt_stub_align); | |
13833 | group->stub_sec->size | |
13834 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13835 | } | |
d4aaa2a0 AM |
13836 | |
13837 | for (group = htab->group; group != NULL; group = group->next) | |
13838 | if (group->stub_sec != NULL | |
13839 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13840 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13841 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13842 | break; |
13843 | ||
d4aaa2a0 | 13844 | if (group == NULL |
ba21f564 AM |
13845 | && (htab->brlt->rawsize == htab->brlt->size |
13846 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13847 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 | 13848 | && (htab->glink_eh_frame == NULL |
a804e476 AM |
13849 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size) |
13850 | && (htab->tga_group == NULL | |
13851 | || htab->stub_iteration > 1)) | |
5c3dead3 AM |
13852 | break; |
13853 | ||
721956f4 | 13854 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13855 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13856 | } |
13857 | ||
da44f4e5 AM |
13858 | if (htab->glink_eh_frame != NULL |
13859 | && htab->glink_eh_frame->size != 0) | |
13860 | { | |
13861 | bfd_vma val; | |
13862 | bfd_byte *p, *last_fde; | |
13863 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13864 | struct map_stub *group; |
da44f4e5 | 13865 | |
df136d64 AM |
13866 | /* It is necessary to at least have a rough outline of the |
13867 | linker generated CIEs and FDEs written before | |
13868 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13869 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13870 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13871 | if (p == NULL) | |
0a1b45a2 | 13872 | return false; |
da44f4e5 AM |
13873 | htab->glink_eh_frame->contents = p; |
13874 | last_fde = p; | |
2e0ce1c8 | 13875 | align = 4; |
da44f4e5 AM |
13876 | |
13877 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13878 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13879 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13880 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13881 | p += last_fde_len + 4; |
da44f4e5 | 13882 | |
d4aaa2a0 | 13883 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13884 | if (group->eh_size != 0) |
da44f4e5 | 13885 | { |
df136d64 | 13886 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13887 | last_fde = p; |
df136d64 | 13888 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13889 | /* FDE length. */ |
2e0ce1c8 | 13890 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13891 | p += 4; |
13892 | /* CIE pointer. */ | |
13893 | val = p - htab->glink_eh_frame->contents; | |
13894 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13895 | p += 4; | |
13896 | /* Offset to stub section, written later. */ | |
13897 | p += 4; | |
13898 | /* stub section size. */ | |
d4aaa2a0 | 13899 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13900 | p += 4; |
13901 | /* Augmentation. */ | |
13902 | p += 1; | |
df136d64 AM |
13903 | /* Make sure we don't have all nops. This is enough for |
13904 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13905 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13906 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13907 | } |
13908 | if (htab->glink != NULL && htab->glink->size != 0) | |
13909 | { | |
13910 | last_fde = p; | |
2e0ce1c8 | 13911 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13912 | /* FDE length. */ |
2e0ce1c8 | 13913 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13914 | p += 4; |
13915 | /* CIE pointer. */ | |
13916 | val = p - htab->glink_eh_frame->contents; | |
13917 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13918 | p += 4; | |
13919 | /* Offset to .glink, written later. */ | |
13920 | p += 4; | |
13921 | /* .glink size. */ | |
13922 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13923 | p += 4; | |
13924 | /* Augmentation. */ | |
13925 | p += 1; | |
13926 | ||
3cd7c7d7 | 13927 | *p++ = DW_CFA_advance_loc + (htab->has_plt_localentry0 ? 3 : 2); |
da44f4e5 AM |
13928 | *p++ = DW_CFA_register; |
13929 | *p++ = 65; | |
9f08fa5c | 13930 | *p++ = htab->opd_abi ? 12 : 0; |
3cd7c7d7 | 13931 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 4 : 2); |
da44f4e5 AM |
13932 | *p++ = DW_CFA_restore_extended; |
13933 | *p++ = 65; | |
2e0ce1c8 | 13934 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13935 | } |
13936 | /* Subsume any padding into the last FDE if user .eh_frame | |
13937 | sections are aligned more than glink_eh_frame. Otherwise any | |
13938 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13939 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13940 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13941 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13942 | htab->glink_eh_frame->size = size + pad; |
13943 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13944 | } | |
13945 | ||
d969d15f | 13946 | maybe_strip_output (info, htab->brlt); |
2efec98b AM |
13947 | if (htab->relbrlt != NULL) |
13948 | maybe_strip_output (info, htab->relbrlt); | |
d969d15f AM |
13949 | if (htab->glink_eh_frame != NULL) |
13950 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13951 | |
0a1b45a2 | 13952 | return true; |
721956f4 AM |
13953 | } |
13954 | ||
13955 | /* Called after we have determined section placement. If sections | |
805fc799 | 13956 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13957 | |
805fc799 | 13958 | bfd_vma |
1c865ab2 | 13959 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13960 | { |
805fc799 | 13961 | asection *s; |
a27e685f | 13962 | bfd_vma TOCstart, adjust; |
721956f4 | 13963 | |
43417696 AM |
13964 | if (info != NULL) |
13965 | { | |
13966 | struct elf_link_hash_entry *h; | |
13967 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13968 | ||
2cc15b10 | 13969 | if (is_elf_hash_table (&htab->root) |
43417696 AM |
13970 | && htab->hgot != NULL) |
13971 | h = htab->hgot; | |
13972 | else | |
13973 | { | |
2cc15b10 AM |
13974 | h = (struct elf_link_hash_entry *) |
13975 | bfd_link_hash_lookup (&htab->root, ".TOC.", false, false, true); | |
13976 | if (is_elf_hash_table (&htab->root)) | |
43417696 AM |
13977 | htab->hgot = h; |
13978 | } | |
13979 | if (h != NULL | |
13980 | && h->root.type == bfd_link_hash_defined | |
13981 | && !h->root.linker_def | |
2cc15b10 | 13982 | && (!is_elf_hash_table (&htab->root) |
43417696 AM |
13983 | || h->def_regular)) |
13984 | { | |
ed7007c1 | 13985 | TOCstart = defined_sym_val (h) - TOC_BASE_OFF; |
43417696 AM |
13986 | _bfd_set_gp_value (obfd, TOCstart); |
13987 | return TOCstart; | |
13988 | } | |
13989 | } | |
13990 | ||
805fc799 AM |
13991 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13992 | order. The TOC starts where the first of these sections starts. */ | |
13993 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13994 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13995 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13996 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13997 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13998 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13999 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 14000 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
14001 | { |
14002 | /* This may happen for | |
14003 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
14004 | .toc directive | |
14005 | o bad linker script | |
14006 | o --gc-sections and empty TOC sections | |
14007 | ||
14008 | FIXME: Warn user? */ | |
14009 | ||
14010 | /* Look for a likely section. We probably won't even be | |
14011 | using TOCstart. */ | |
14012 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
14013 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
14014 | | SEC_EXCLUDE)) | |
805fc799 AM |
14015 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
14016 | break; | |
721956f4 | 14017 | if (s == NULL) |
805fc799 | 14018 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 14019 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
14020 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
14021 | break; | |
721956f4 | 14022 | if (s == NULL) |
805fc799 | 14023 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
14024 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
14025 | == SEC_ALLOC) | |
805fc799 | 14026 | break; |
721956f4 | 14027 | if (s == NULL) |
805fc799 | 14028 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 14029 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
14030 | break; |
14031 | } | |
721956f4 | 14032 | |
805fc799 AM |
14033 | TOCstart = 0; |
14034 | if (s != NULL) | |
14035 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 14036 | |
a27e685f AM |
14037 | /* Force alignment. */ |
14038 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
14039 | TOCstart -= adjust; | |
1c865ab2 AM |
14040 | _bfd_set_gp_value (obfd, TOCstart); |
14041 | ||
810d4e75 | 14042 | if (info != NULL && s != NULL) |
1c865ab2 AM |
14043 | { |
14044 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14045 | ||
810d4e75 AM |
14046 | if (htab != NULL) |
14047 | { | |
14048 | if (htab->elf.hgot != NULL) | |
14049 | { | |
a27e685f | 14050 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
14051 | htab->elf.hgot->root.u.def.section = s; |
14052 | } | |
14053 | } | |
14054 | else | |
1c865ab2 | 14055 | { |
810d4e75 AM |
14056 | struct bfd_link_hash_entry *bh = NULL; |
14057 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f | 14058 | s, TOC_BASE_OFF - adjust, |
0a1b45a2 | 14059 | NULL, false, false, &bh); |
1c865ab2 AM |
14060 | } |
14061 | } | |
805fc799 | 14062 | return TOCstart; |
721956f4 AM |
14063 | } |
14064 | ||
a345bc8d | 14065 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 14066 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d | 14067 | |
0a1b45a2 | 14068 | static bool |
49c09209 | 14069 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
14070 | { |
14071 | struct bfd_link_info *info; | |
14072 | struct ppc_link_hash_table *htab; | |
49c09209 | 14073 | struct plt_entry *ent; |
a345bc8d AM |
14074 | asection *s; |
14075 | ||
14076 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 14077 | return true; |
a345bc8d | 14078 | |
49c09209 AM |
14079 | info = inf; |
14080 | htab = ppc_hash_table (info); | |
14081 | if (htab == NULL) | |
0a1b45a2 | 14082 | return false; |
49c09209 AM |
14083 | |
14084 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14085 | if (ent->plt.offset != (bfd_vma) -1) | |
14086 | { | |
14087 | /* This symbol has an entry in the procedure linkage | |
14088 | table. Set it up. */ | |
14089 | Elf_Internal_Rela rela; | |
2d7ad24e | 14090 | asection *plt, *relplt; |
49c09209 AM |
14091 | bfd_byte *loc; |
14092 | ||
30845f11 | 14093 | if (use_local_plt (info, h)) |
49c09209 AM |
14094 | { |
14095 | if (!(h->def_regular | |
14096 | && (h->root.type == bfd_link_hash_defined | |
14097 | || h->root.type == bfd_link_hash_defweak))) | |
14098 | continue; | |
2d7ad24e AM |
14099 | if (h->type == STT_GNU_IFUNC) |
14100 | { | |
14101 | plt = htab->elf.iplt; | |
14102 | relplt = htab->elf.irelplt; | |
0a1b45a2 | 14103 | htab->elf.ifunc_resolvers = true; |
2d7ad24e AM |
14104 | if (htab->opd_abi) |
14105 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14106 | else | |
14107 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14108 | } | |
49c09209 | 14109 | else |
2d7ad24e AM |
14110 | { |
14111 | plt = htab->pltlocal; | |
14112 | if (bfd_link_pic (info)) | |
14113 | { | |
14114 | relplt = htab->relpltlocal; | |
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 | else | |
14121 | relplt = NULL; | |
14122 | } | |
ed7007c1 | 14123 | rela.r_addend = defined_sym_val (h) + ent->addend; |
2d7ad24e AM |
14124 | |
14125 | if (relplt == NULL) | |
14126 | { | |
14127 | loc = plt->contents + ent->plt.offset; | |
14128 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
14129 | if (htab->opd_abi) | |
14130 | { | |
14131 | bfd_vma toc = elf_gp (info->output_bfd); | |
14132 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
14133 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14134 | } | |
14135 | } | |
14136 | else | |
14137 | { | |
14138 | rela.r_offset = (plt->output_section->vma | |
14139 | + plt->output_offset | |
14140 | + ent->plt.offset); | |
14141 | loc = relplt->contents + (relplt->reloc_count++ | |
14142 | * sizeof (Elf64_External_Rela)); | |
14143 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14144 | } | |
49c09209 AM |
14145 | } |
14146 | else | |
14147 | { | |
14148 | rela.r_offset = (htab->elf.splt->output_section->vma | |
14149 | + htab->elf.splt->output_offset | |
14150 | + ent->plt.offset); | |
14151 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
14152 | rela.r_addend = ent->addend; | |
14153 | loc = (htab->elf.srelplt->contents | |
14154 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
14155 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
14156 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
0a1b45a2 | 14157 | htab->elf.ifunc_resolvers = true; |
2d7ad24e | 14158 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 14159 | } |
49c09209 AM |
14160 | } |
14161 | ||
a345bc8d | 14162 | if (!h->pointer_equality_needed) |
0a1b45a2 | 14163 | return true; |
a345bc8d AM |
14164 | |
14165 | if (h->def_regular) | |
0a1b45a2 | 14166 | return true; |
a345bc8d | 14167 | |
9e390558 | 14168 | s = htab->global_entry; |
49c09209 | 14169 | if (s == NULL || s->size == 0) |
0a1b45a2 | 14170 | return true; |
49c09209 AM |
14171 | |
14172 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14173 | if (ent->plt.offset != (bfd_vma) -1 | |
14174 | && ent->addend == 0) | |
a345bc8d AM |
14175 | { |
14176 | bfd_byte *p; | |
14177 | asection *plt; | |
14178 | bfd_vma off; | |
14179 | ||
a345bc8d | 14180 | p = s->contents + h->root.u.def.value; |
33e44f2e | 14181 | plt = htab->elf.splt; |
30845f11 | 14182 | if (use_local_plt (info, h)) |
2d7ad24e AM |
14183 | { |
14184 | if (h->type == STT_GNU_IFUNC) | |
14185 | plt = htab->elf.iplt; | |
14186 | else | |
14187 | plt = htab->pltlocal; | |
14188 | } | |
49c09209 | 14189 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
14190 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
14191 | ||
14192 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
14193 | { | |
14194 | info->callbacks->einfo | |
c1c8c1ef | 14195 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
14196 | h->root.root.string); |
14197 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 14198 | htab->stub_error = true; |
a345bc8d AM |
14199 | } |
14200 | ||
7341d5e2 AM |
14201 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
14202 | if (htab->params->emit_stub_syms) | |
14203 | { | |
14204 | size_t len = strlen (h->root.root.string); | |
14205 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
14206 | ||
14207 | if (name == NULL) | |
0a1b45a2 | 14208 | return false; |
7341d5e2 AM |
14209 | |
14210 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
0a1b45a2 | 14211 | h = elf_link_hash_lookup (&htab->elf, name, true, false, false); |
7341d5e2 | 14212 | if (h == NULL) |
0a1b45a2 | 14213 | return false; |
7341d5e2 AM |
14214 | if (h->root.type == bfd_link_hash_new) |
14215 | { | |
14216 | h->root.type = bfd_link_hash_defined; | |
14217 | h->root.u.def.section = s; | |
14218 | h->root.u.def.value = p - s->contents; | |
14219 | h->ref_regular = 1; | |
14220 | h->def_regular = 1; | |
14221 | h->ref_regular_nonweak = 1; | |
14222 | h->forced_local = 1; | |
14223 | h->non_elf = 0; | |
2ec55de3 | 14224 | h->root.linker_def = 1; |
7341d5e2 AM |
14225 | } |
14226 | } | |
14227 | ||
a345bc8d AM |
14228 | if (PPC_HA (off) != 0) |
14229 | { | |
14230 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
14231 | p += 4; | |
14232 | } | |
14233 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
14234 | p += 4; | |
14235 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
14236 | p += 4; | |
407aa07c | 14237 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14238 | break; |
14239 | } | |
0a1b45a2 | 14240 | return true; |
a345bc8d AM |
14241 | } |
14242 | ||
49c09209 AM |
14243 | /* Write PLT relocs for locals. */ |
14244 | ||
0a1b45a2 | 14245 | static bool |
49c09209 AM |
14246 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) |
14247 | { | |
14248 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14249 | bfd *ibfd; | |
14250 | ||
14251 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14252 | { | |
14253 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14254 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14255 | Elf_Internal_Shdr *symtab_hdr; | |
14256 | bfd_size_type locsymcount; | |
14257 | Elf_Internal_Sym *local_syms = NULL; | |
14258 | struct plt_entry *ent; | |
14259 | ||
14260 | if (!is_ppc64_elf (ibfd)) | |
14261 | continue; | |
14262 | ||
14263 | lgot_ents = elf_local_got_ents (ibfd); | |
14264 | if (!lgot_ents) | |
14265 | continue; | |
14266 | ||
14267 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14268 | locsymcount = symtab_hdr->sh_info; | |
14269 | end_lgot_ents = lgot_ents + locsymcount; | |
14270 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14271 | end_local_plt = local_plt + locsymcount; | |
14272 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14273 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14274 | if (ent->plt.offset != (bfd_vma) -1) | |
14275 | { | |
14276 | Elf_Internal_Sym *sym; | |
14277 | asection *sym_sec; | |
14278 | asection *plt, *relplt; | |
14279 | bfd_byte *loc; | |
14280 | bfd_vma val; | |
49c09209 AM |
14281 | |
14282 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14283 | lplt - local_plt, ibfd)) | |
14284 | { | |
c9594989 | 14285 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
49c09209 | 14286 | free (local_syms); |
0a1b45a2 | 14287 | return false; |
49c09209 AM |
14288 | } |
14289 | ||
14290 | val = sym->st_value + ent->addend; | |
49c09209 AM |
14291 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
14292 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14293 | ||
2d7ad24e AM |
14294 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14295 | { | |
0a1b45a2 | 14296 | htab->elf.ifunc_resolvers = true; |
2d7ad24e AM |
14297 | plt = htab->elf.iplt; |
14298 | relplt = htab->elf.irelplt; | |
14299 | } | |
14300 | else | |
14301 | { | |
14302 | plt = htab->pltlocal; | |
14303 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
14304 | } | |
49c09209 | 14305 | |
2d7ad24e AM |
14306 | if (relplt == NULL) |
14307 | { | |
14308 | loc = plt->contents + ent->plt.offset; | |
14309 | bfd_put_64 (info->output_bfd, val, loc); | |
14310 | if (htab->opd_abi) | |
14311 | { | |
14312 | bfd_vma toc = elf_gp (ibfd); | |
14313 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14314 | } | |
14315 | } | |
49c09209 | 14316 | else |
2d7ad24e AM |
14317 | { |
14318 | Elf_Internal_Rela rela; | |
14319 | rela.r_offset = (ent->plt.offset | |
14320 | + plt->output_offset | |
14321 | + plt->output_section->vma); | |
14322 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14323 | { | |
14324 | if (htab->opd_abi) | |
14325 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14326 | else | |
14327 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14328 | } | |
14329 | else | |
14330 | { | |
14331 | if (htab->opd_abi) | |
14332 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14333 | else | |
14334 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14335 | } | |
14336 | rela.r_addend = val; | |
14337 | loc = relplt->contents + (relplt->reloc_count++ | |
14338 | * sizeof (Elf64_External_Rela)); | |
14339 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14340 | } | |
49c09209 AM |
14341 | } |
14342 | ||
14343 | if (local_syms != NULL | |
14344 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14345 | { | |
14346 | if (!info->keep_memory) | |
14347 | free (local_syms); | |
14348 | else | |
14349 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14350 | } | |
14351 | } | |
0a1b45a2 | 14352 | return true; |
49c09209 AM |
14353 | } |
14354 | ||
a804e476 AM |
14355 | /* Emit the static wrapper function preserving registers around a |
14356 | __tls_get_addr_opt call. */ | |
14357 | ||
0a1b45a2 | 14358 | static bool |
a804e476 AM |
14359 | emit_tga_desc (struct ppc_link_hash_table *htab) |
14360 | { | |
14361 | asection *stub_sec = htab->tga_group->stub_sec; | |
14362 | unsigned int cfa_updt = 11 * 4; | |
14363 | bfd_byte *p; | |
14364 | bfd_vma to, from, delta; | |
14365 | ||
14366 | BFD_ASSERT (htab->tga_desc_fd->elf.root.type == bfd_link_hash_defined | |
14367 | && htab->tga_desc_fd->elf.root.u.def.section == stub_sec | |
14368 | && htab->tga_desc_fd->elf.root.u.def.value == 0); | |
14369 | to = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
14370 | from = defined_sym_val (&htab->tga_desc_fd->elf) + cfa_updt; | |
14371 | delta = to - from; | |
14372 | if (delta + (1 << 25) >= 1 << 26) | |
14373 | { | |
14374 | _bfd_error_handler (_("__tls_get_addr call offset overflow")); | |
0a1b45a2 AM |
14375 | htab->stub_error = true; |
14376 | return false; | |
a804e476 AM |
14377 | } |
14378 | ||
14379 | p = stub_sec->contents; | |
14380 | p = tls_get_addr_prologue (htab->elf.dynobj, p, htab); | |
14381 | bfd_put_32 (stub_sec->owner, B_DOT | 1 | (delta & 0x3fffffc), p); | |
14382 | p += 4; | |
14383 | p = tls_get_addr_epilogue (htab->elf.dynobj, p, htab); | |
14384 | return stub_sec->size == (bfd_size_type) (p - stub_sec->contents); | |
14385 | } | |
14386 | ||
14387 | /* Emit eh_frame describing the static wrapper function. */ | |
14388 | ||
14389 | static bfd_byte * | |
14390 | emit_tga_desc_eh_frame (struct ppc_link_hash_table *htab, bfd_byte *p) | |
14391 | { | |
14392 | unsigned int cfa_updt = 11 * 4; | |
14393 | unsigned int i; | |
14394 | ||
14395 | *p++ = DW_CFA_advance_loc + cfa_updt / 4; | |
14396 | *p++ = DW_CFA_def_cfa_offset; | |
14397 | if (htab->opd_abi) | |
14398 | { | |
14399 | *p++ = 128; | |
14400 | *p++ = 1; | |
14401 | } | |
14402 | else | |
14403 | *p++ = 96; | |
14404 | *p++ = DW_CFA_offset_extended_sf; | |
14405 | *p++ = 65; | |
14406 | *p++ = (-16 / 8) & 0x7f; | |
14407 | for (i = 4; i < 12; i++) | |
14408 | { | |
14409 | *p++ = DW_CFA_offset + i; | |
14410 | *p++ = (htab->opd_abi ? 13 : 12) - i; | |
14411 | } | |
14412 | *p++ = DW_CFA_advance_loc + 10; | |
14413 | *p++ = DW_CFA_def_cfa_offset; | |
14414 | *p++ = 0; | |
14415 | for (i = 4; i < 12; i++) | |
14416 | *p++ = DW_CFA_restore + i; | |
14417 | *p++ = DW_CFA_advance_loc + 2; | |
14418 | *p++ = DW_CFA_restore_extended; | |
14419 | *p++ = 65; | |
14420 | return p; | |
14421 | } | |
14422 | ||
721956f4 AM |
14423 | /* Build all the stubs associated with the current output file. |
14424 | The stubs are kept in a hash table attached to the main linker | |
14425 | hash table. This function is called via gldelf64ppc_finish. */ | |
14426 | ||
0a1b45a2 | 14427 | bool |
e7d1c40c | 14428 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14429 | char **stats) |
5d1634d7 AM |
14430 | { |
14431 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14432 | struct map_stub *group; |
721956f4 | 14433 | asection *stub_sec; |
5d1634d7 | 14434 | bfd_byte *p; |
e717da7e | 14435 | int stub_sec_count = 0; |
5d1634d7 | 14436 | |
4dfe6ac6 | 14437 | if (htab == NULL) |
0a1b45a2 | 14438 | return false; |
4dfe6ac6 | 14439 | |
eea6121a | 14440 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14441 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14442 | { |
14443 | group->eh_size = 0; | |
14444 | group->lr_restore = 0; | |
14445 | if ((stub_sec = group->stub_sec) != NULL | |
14446 | && stub_sec->size != 0) | |
14447 | { | |
14448 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14449 | stub_sec->size); | |
14450 | if (stub_sec->contents == NULL) | |
0a1b45a2 | 14451 | return false; |
df136d64 AM |
14452 | stub_sec->size = 0; |
14453 | } | |
14454 | } | |
5d1634d7 | 14455 | |
23eb7e01 | 14456 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14457 | { |
9f951329 | 14458 | unsigned int indx; |
ad8e1ba5 | 14459 | bfd_vma plt0; |
9f951329 | 14460 | |
721956f4 | 14461 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14462 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14463 | { |
14464 | struct elf_link_hash_entry *h; | |
468392fb | 14465 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
0a1b45a2 | 14466 | true, false, false); |
97b639ba | 14467 | if (h == NULL) |
0a1b45a2 | 14468 | return false; |
97b639ba AM |
14469 | if (h->root.type == bfd_link_hash_new) |
14470 | { | |
14471 | h->root.type = bfd_link_hash_defined; | |
14472 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14473 | h->root.u.def.value = 8; |
f5385ebf AM |
14474 | h->ref_regular = 1; |
14475 | h->def_regular = 1; | |
14476 | h->ref_regular_nonweak = 1; | |
14477 | h->forced_local = 1; | |
14478 | h->non_elf = 0; | |
2ec55de3 | 14479 | h->root.linker_def = 1; |
97b639ba AM |
14480 | } |
14481 | } | |
33e44f2e AM |
14482 | plt0 = (htab->elf.splt->output_section->vma |
14483 | + htab->elf.splt->output_offset | |
14484 | - 16); | |
176a0d42 AM |
14485 | if (info->emitrelocations) |
14486 | { | |
14487 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
14488 | if (r == NULL) | |
0a1b45a2 | 14489 | return false; |
176a0d42 AM |
14490 | r->r_offset = (htab->glink->output_offset |
14491 | + htab->glink->output_section->vma); | |
14492 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
14493 | r->r_addend = plt0; | |
14494 | } | |
4ce794b7 | 14495 | p = htab->glink->contents; |
176a0d42 | 14496 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
14497 | bfd_put_64 (htab->glink->owner, plt0, p); |
14498 | p += 8; | |
b9e5796b AM |
14499 | if (htab->opd_abi) |
14500 | { | |
14501 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
14502 | p += 4; | |
14503 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14504 | p += 4; | |
14505 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14506 | p += 4; | |
14507 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
14508 | p += 4; | |
14509 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
14510 | p += 4; | |
14511 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14512 | p += 4; | |
14513 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14514 | p += 4; | |
14515 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
14516 | p += 4; | |
14517 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14518 | p += 4; | |
14519 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
14520 | p += 4; | |
14521 | } | |
14522 | else | |
14523 | { | |
3cd7c7d7 AM |
14524 | unsigned int insn; |
14525 | ||
14526 | /* 0: | |
14527 | . .quad plt0-1f # plt0 entry relative to 1: | |
14528 | # | |
14529 | # We get here with r12 initially @ a glink branch | |
14530 | # Load the address of _dl_runtime_resolve from plt0 and | |
14531 | # jump to it, with r0 set to the index of the PLT entry | |
14532 | # to be resolved and r11 the link map. | |
14533 | __glink_PLTresolve: | |
14534 | . std %r2,24(%r1) # optional | |
14535 | . mflr %r0 | |
14536 | . bcl 20,31,1f | |
14537 | 1: | |
14538 | . mflr %r11 | |
14539 | . mtlr %r0 | |
14540 | . ld %r0,(0b-1b)(%r11) | |
14541 | . sub %r12,%r12,%r11 | |
14542 | . add %r11,%r0,%r11 | |
14543 | . addi %r0,%r12,1b-2f | |
14544 | . ld %r12,0(%r11) | |
14545 | . srdi %r0,%r0,2 | |
14546 | . mtctr %r12 | |
14547 | . ld %r11,8(%r11) | |
14548 | . bctr | |
14549 | 2: | |
14550 | . b __glink_PLTresolve | |
14551 | . ... | |
14552 | . b __glink_PLTresolve */ | |
14553 | ||
14554 | if (htab->has_plt_localentry0) | |
14555 | { | |
14556 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); | |
14557 | p += 4; | |
14558 | } | |
b9e5796b AM |
14559 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); |
14560 | p += 4; | |
14561 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14562 | p += 4; | |
14563 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14564 | p += 4; | |
b9e5796b AM |
14565 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); |
14566 | p += 4; | |
3cd7c7d7 AM |
14567 | if (htab->has_plt_localentry0) |
14568 | insn = LD_R0_0R11 | (-20 & 0xfffc); | |
14569 | else | |
14570 | insn = LD_R0_0R11 | (-16 & 0xfffc); | |
14571 | bfd_put_32 (htab->glink->owner, insn, p); | |
14572 | p += 4; | |
b9e5796b AM |
14573 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
14574 | p += 4; | |
3cd7c7d7 | 14575 | bfd_put_32 (htab->glink->owner, ADD_R11_R0_R11, p); |
b9e5796b | 14576 | p += 4; |
3cd7c7d7 | 14577 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-44 & 0xffff), p); |
b9e5796b AM |
14578 | p += 4; |
14579 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14580 | p += 4; | |
14581 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
14582 | p += 4; | |
14583 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14584 | p += 4; | |
14585 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
14586 | p += 4; | |
14587 | } | |
407aa07c AM |
14588 | bfd_put_32 (htab->glink->owner, BCTR, p); |
14589 | p += 4; | |
c75bc4f7 | 14590 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 14591 | |
9f951329 AM |
14592 | /* Build the .glink lazy link call stubs. */ |
14593 | indx = 0; | |
9e390558 | 14594 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 14595 | { |
b9e5796b | 14596 | if (htab->opd_abi) |
9f951329 | 14597 | { |
b9e5796b AM |
14598 | if (indx < 0x8000) |
14599 | { | |
14600 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
14601 | p += 4; | |
14602 | } | |
14603 | else | |
14604 | { | |
14605 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
14606 | p += 4; | |
14607 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
14608 | p); | |
14609 | p += 4; | |
14610 | } | |
9f951329 | 14611 | } |
4ce794b7 | 14612 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 14613 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 14614 | indx++; |
9f951329 AM |
14615 | p += 4; |
14616 | } | |
5d1634d7 | 14617 | } |
5d1634d7 | 14618 | |
a804e476 AM |
14619 | if (htab->tga_group != NULL) |
14620 | { | |
14621 | htab->tga_group->lr_restore = 23 * 4; | |
14622 | htab->tga_group->stub_sec->size = 24 * 4; | |
14623 | if (!emit_tga_desc (htab)) | |
0a1b45a2 | 14624 | return false; |
a804e476 AM |
14625 | if (htab->glink_eh_frame != NULL |
14626 | && htab->glink_eh_frame->size != 0) | |
14627 | { | |
14628 | size_t align = 4; | |
14629 | ||
14630 | p = htab->glink_eh_frame->contents; | |
14631 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14632 | p += 17; | |
14633 | htab->tga_group->eh_size = emit_tga_desc_eh_frame (htab, p) - p; | |
14634 | } | |
14635 | } | |
14636 | ||
49c09209 AM |
14637 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
14638 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
14639 | ||
14640 | if (!write_plt_relocs_for_local_syms (info)) | |
0a1b45a2 | 14641 | return false; |
9e390558 | 14642 | |
7341d5e2 | 14643 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14644 | { |
4ce794b7 | 14645 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14646 | htab->brlt->size); |
4ce794b7 | 14647 | if (htab->brlt->contents == NULL) |
0a1b45a2 | 14648 | return false; |
721956f4 | 14649 | } |
ee75fd95 | 14650 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14651 | { |
14652 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14653 | htab->relbrlt->size); |
63bc6f6c | 14654 | if (htab->relbrlt->contents == NULL) |
0a1b45a2 | 14655 | return false; |
63bc6f6c | 14656 | } |
5d1634d7 | 14657 | |
721956f4 AM |
14658 | /* Build the stubs as directed by the stub hash table. */ |
14659 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14660 | |
a4b6fadd AM |
14661 | for (group = htab->group; group != NULL; group = group->next) |
14662 | if (group->needs_save_res) | |
7dda8d3c | 14663 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14664 | |
aa8a7074 AM |
14665 | if (htab->relbrlt != NULL) |
14666 | htab->relbrlt->reloc_count = 0; | |
14667 | ||
e7d1c40c | 14668 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14669 | for (group = htab->group; group != NULL; group = group->next) |
14670 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14671 | { |
14672 | int align = abs (htab->params->plt_stub_align); | |
14673 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14674 | } | |
794e51c0 | 14675 | |
7dda8d3c AM |
14676 | for (group = htab->group; group != NULL; group = group->next) |
14677 | if (group->needs_save_res) | |
14678 | { | |
14679 | stub_sec = group->stub_sec; | |
14680 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14681 | htab->sfpr->contents, htab->sfpr->size); | |
14682 | if (htab->params->emit_stub_syms) | |
14683 | { | |
14684 | unsigned int i; | |
14685 | ||
14686 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14687 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
0a1b45a2 | 14688 | return false; |
7dda8d3c AM |
14689 | } |
14690 | } | |
14691 | ||
df136d64 AM |
14692 | if (htab->glink_eh_frame != NULL |
14693 | && htab->glink_eh_frame->size != 0) | |
14694 | { | |
14695 | bfd_vma val; | |
14696 | size_t align = 4; | |
14697 | ||
14698 | p = htab->glink_eh_frame->contents; | |
14699 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14700 | ||
14701 | for (group = htab->group; group != NULL; group = group->next) | |
14702 | if (group->eh_size != 0) | |
14703 | { | |
14704 | /* Offset to stub section. */ | |
14705 | val = (group->stub_sec->output_section->vma | |
14706 | + group->stub_sec->output_offset); | |
14707 | val -= (htab->glink_eh_frame->output_section->vma | |
14708 | + htab->glink_eh_frame->output_offset | |
14709 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14710 | if (val + 0x80000000 > 0xffffffff) | |
14711 | { | |
14712 | _bfd_error_handler | |
14713 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14714 | group->stub_sec->name); | |
0a1b45a2 | 14715 | return false; |
df136d64 AM |
14716 | } |
14717 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14718 | p += (group->eh_size + 17 + 3) & -4; | |
14719 | } | |
14720 | if (htab->glink != NULL && htab->glink->size != 0) | |
14721 | { | |
14722 | /* Offset to .glink. */ | |
14723 | val = (htab->glink->output_section->vma | |
14724 | + htab->glink->output_offset | |
14725 | + 8); | |
14726 | val -= (htab->glink_eh_frame->output_section->vma | |
14727 | + htab->glink_eh_frame->output_offset | |
14728 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14729 | if (val + 0x80000000 > 0xffffffff) | |
14730 | { | |
14731 | _bfd_error_handler | |
14732 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14733 | htab->glink->name); | |
0a1b45a2 | 14734 | return false; |
df136d64 AM |
14735 | } |
14736 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14737 | p += (24 + align - 1) & -align; | |
14738 | } | |
14739 | } | |
14740 | ||
d4aaa2a0 AM |
14741 | for (group = htab->group; group != NULL; group = group->next) |
14742 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14743 | { |
14744 | stub_sec_count += 1; | |
c9301e31 AM |
14745 | if (stub_sec->rawsize != stub_sec->size |
14746 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14747 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14748 | break; |
14749 | } | |
5d1634d7 | 14750 | |
25516cc5 | 14751 | if (group != NULL) |
5d1634d7 | 14752 | { |
0a1b45a2 | 14753 | htab->stub_error = true; |
cf97bcb0 | 14754 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14755 | } |
721956f4 | 14756 | |
d2a300cf | 14757 | if (htab->stub_error) |
0a1b45a2 | 14758 | return false; |
d2a300cf AM |
14759 | |
14760 | if (stats != NULL) | |
14761 | { | |
988b7300 AM |
14762 | char *groupmsg; |
14763 | if (asprintf (&groupmsg, | |
14764 | ngettext ("linker stubs in %u group\n", | |
14765 | "linker stubs in %u groups\n", | |
14766 | stub_sec_count), | |
14767 | stub_sec_count) < 0) | |
14768 | *stats = NULL; | |
14769 | else | |
14770 | { | |
14771 | if (asprintf (stats, _("%s" | |
14772 | " branch %lu\n" | |
14773 | " branch toc adj %lu\n" | |
14774 | " branch notoc %lu\n" | |
14775 | " branch both %lu\n" | |
14776 | " long branch %lu\n" | |
14777 | " long toc adj %lu\n" | |
14778 | " long notoc %lu\n" | |
14779 | " long both %lu\n" | |
14780 | " plt call %lu\n" | |
14781 | " plt call save %lu\n" | |
14782 | " plt call notoc %lu\n" | |
14783 | " plt call both %lu\n" | |
14784 | " global entry %lu"), | |
14785 | groupmsg, | |
14786 | htab->stub_count[ppc_stub_long_branch - 1], | |
14787 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
14788 | htab->stub_count[ppc_stub_long_branch_notoc - 1], | |
14789 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
14790 | htab->stub_count[ppc_stub_plt_branch - 1], | |
14791 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
14792 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], | |
14793 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
14794 | htab->stub_count[ppc_stub_plt_call - 1], | |
14795 | htab->stub_count[ppc_stub_plt_call_r2save - 1], | |
14796 | htab->stub_count[ppc_stub_plt_call_notoc - 1], | |
14797 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
14798 | htab->stub_count[ppc_stub_global_entry - 1]) < 0) | |
14799 | *stats = NULL; | |
14800 | free (groupmsg); | |
14801 | } | |
d2a300cf | 14802 | } |
0a1b45a2 | 14803 | return true; |
5bd4f169 AM |
14804 | } |
14805 | ||
60124e18 AM |
14806 | /* What to do when ld finds relocations against symbols defined in |
14807 | discarded sections. */ | |
14808 | ||
14809 | static unsigned int | |
14810 | ppc64_elf_action_discarded (asection *sec) | |
14811 | { | |
14812 | if (strcmp (".opd", sec->name) == 0) | |
14813 | return 0; | |
14814 | ||
14815 | if (strcmp (".toc", sec->name) == 0) | |
14816 | return 0; | |
14817 | ||
bce50a28 JJ |
14818 | if (strcmp (".toc1", sec->name) == 0) |
14819 | return 0; | |
14820 | ||
60124e18 AM |
14821 | return _bfd_elf_default_action_discarded (sec); |
14822 | } | |
14823 | ||
e59a1001 AM |
14824 | /* These are the dynamic relocations supported by glibc. */ |
14825 | ||
0a1b45a2 | 14826 | static bool |
e59a1001 AM |
14827 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) |
14828 | { | |
14829 | switch (r_type) | |
14830 | { | |
14831 | case R_PPC64_RELATIVE: | |
14832 | case R_PPC64_NONE: | |
14833 | case R_PPC64_ADDR64: | |
14834 | case R_PPC64_GLOB_DAT: | |
14835 | case R_PPC64_IRELATIVE: | |
14836 | case R_PPC64_JMP_IREL: | |
14837 | case R_PPC64_JMP_SLOT: | |
14838 | case R_PPC64_DTPMOD64: | |
14839 | case R_PPC64_DTPREL64: | |
14840 | case R_PPC64_TPREL64: | |
14841 | case R_PPC64_TPREL16_LO_DS: | |
14842 | case R_PPC64_TPREL16_DS: | |
14843 | case R_PPC64_TPREL16: | |
14844 | case R_PPC64_TPREL16_LO: | |
14845 | case R_PPC64_TPREL16_HI: | |
14846 | case R_PPC64_TPREL16_HIGH: | |
14847 | case R_PPC64_TPREL16_HA: | |
14848 | case R_PPC64_TPREL16_HIGHA: | |
14849 | case R_PPC64_TPREL16_HIGHER: | |
14850 | case R_PPC64_TPREL16_HIGHEST: | |
14851 | case R_PPC64_TPREL16_HIGHERA: | |
14852 | case R_PPC64_TPREL16_HIGHESTA: | |
14853 | case R_PPC64_ADDR16_LO_DS: | |
14854 | case R_PPC64_ADDR16_LO: | |
14855 | case R_PPC64_ADDR16_HI: | |
14856 | case R_PPC64_ADDR16_HIGH: | |
14857 | case R_PPC64_ADDR16_HA: | |
14858 | case R_PPC64_ADDR16_HIGHA: | |
14859 | case R_PPC64_REL30: | |
14860 | case R_PPC64_COPY: | |
14861 | case R_PPC64_UADDR64: | |
14862 | case R_PPC64_UADDR32: | |
14863 | case R_PPC64_ADDR32: | |
14864 | case R_PPC64_ADDR24: | |
14865 | case R_PPC64_ADDR16: | |
14866 | case R_PPC64_UADDR16: | |
14867 | case R_PPC64_ADDR16_DS: | |
14868 | case R_PPC64_ADDR16_HIGHER: | |
14869 | case R_PPC64_ADDR16_HIGHEST: | |
14870 | case R_PPC64_ADDR16_HIGHERA: | |
14871 | case R_PPC64_ADDR16_HIGHESTA: | |
14872 | case R_PPC64_ADDR14: | |
14873 | case R_PPC64_ADDR14_BRTAKEN: | |
14874 | case R_PPC64_ADDR14_BRNTAKEN: | |
14875 | case R_PPC64_REL32: | |
14876 | case R_PPC64_REL64: | |
0a1b45a2 | 14877 | return true; |
e59a1001 AM |
14878 | |
14879 | default: | |
0a1b45a2 | 14880 | return false; |
e59a1001 AM |
14881 | } |
14882 | } | |
14883 | ||
5bd4f169 AM |
14884 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14885 | to handle the relocations for a section. | |
14886 | ||
14887 | The relocs are always passed as Rela structures; if the section | |
14888 | actually uses Rel structures, the r_addend field will always be | |
14889 | zero. | |
14890 | ||
14891 | This function is responsible for adjust the section contents as | |
14892 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14893 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14894 | necessary. |
14895 | ||
14896 | This function does not have to worry about setting the reloc | |
14897 | address or the reloc symbol index. | |
14898 | ||
14899 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14900 | ||
14901 | LOCAL_SECTIONS is an array giving the section in the input file | |
14902 | corresponding to the st_shndx field of each local symbol. | |
14903 | ||
14904 | The global hash table entry for the global symbols can be found | |
14905 | via elf_sym_hashes (input_bfd). | |
14906 | ||
1049f94e | 14907 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14908 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14909 | going to be the section symbol corresponding to the output | |
14910 | section, which means that the addend must be adjusted | |
14911 | accordingly. */ | |
14912 | ||
0f684201 | 14913 | static int |
4ce794b7 AM |
14914 | ppc64_elf_relocate_section (bfd *output_bfd, |
14915 | struct bfd_link_info *info, | |
14916 | bfd *input_bfd, | |
14917 | asection *input_section, | |
14918 | bfd_byte *contents, | |
14919 | Elf_Internal_Rela *relocs, | |
14920 | Elf_Internal_Sym *local_syms, | |
14921 | asection **local_sections) | |
5bd4f169 | 14922 | { |
65f38f15 | 14923 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14924 | Elf_Internal_Shdr *symtab_hdr; |
14925 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14926 | Elf_Internal_Rela *rel; |
c316a17c | 14927 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14928 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14929 | Elf_Internal_Rela outrel; |
14930 | bfd_byte *loc; | |
411e1bfb | 14931 | struct got_entry **local_got_ents; |
5bd4f169 | 14932 | bfd_vma TOCstart; |
0a1b45a2 AM |
14933 | bool ret = true; |
14934 | bool is_opd; | |
794e51c0 | 14935 | /* Assume 'at' branch hints. */ |
0a1b45a2 AM |
14936 | bool is_isa_v2 = true; |
14937 | bool warned_dynamic = false; | |
95f0d0d2 | 14938 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14939 | |
65f38f15 | 14940 | /* Initialize howto table if needed. */ |
5bd4f169 | 14941 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14942 | ppc_howto_init (); |
14943 | ||
65f38f15 | 14944 | htab = ppc_hash_table (info); |
4dfe6ac6 | 14945 | if (htab == NULL) |
0a1b45a2 | 14946 | return false; |
ee75fd95 AM |
14947 | |
14948 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14949 | if (input_section->owner == htab->params->stub_bfd) |
0a1b45a2 | 14950 | return true; |
ee75fd95 | 14951 | |
7af5d5c4 AM |
14952 | if (!is_ppc64_elf (input_bfd)) |
14953 | { | |
14954 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 14955 | return false; |
7af5d5c4 | 14956 | } |
0ffa91dd | 14957 | |
411e1bfb | 14958 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14959 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14960 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14961 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14962 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14963 | |
c316a17c | 14964 | rel = wrel = relocs; |
5bd4f169 | 14965 | relend = relocs + input_section->reloc_count; |
c316a17c | 14966 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14967 | { |
04c9666a | 14968 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14969 | bfd_vma addend; |
5bd4f169 AM |
14970 | bfd_reloc_status_type r; |
14971 | Elf_Internal_Sym *sym; | |
14972 | asection *sec; | |
039b3fef AM |
14973 | struct elf_link_hash_entry *h_elf; |
14974 | struct ppc_link_hash_entry *h; | |
14975 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14976 | const char *sym_name; |
0d4792f7 | 14977 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14978 | bfd_vma toc_addend; |
f961d9dd AM |
14979 | unsigned char tls_mask, tls_gd, tls_type; |
14980 | unsigned char sym_type; | |
5bd4f169 | 14981 | bfd_vma relocation; |
0a1b45a2 AM |
14982 | bool unresolved_reloc, save_unresolved_reloc; |
14983 | bool warned; | |
bc30df16 | 14984 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14985 | unsigned int insn; |
e11840f9 | 14986 | unsigned int mask; |
721956f4 AM |
14987 | struct ppc_stub_hash_entry *stub_entry; |
14988 | bfd_vma max_br_offset; | |
14989 | bfd_vma from; | |
c316a17c | 14990 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14991 | reloc_howto_type *howto; |
14992 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14993 | uint64_t pinsn; |
14994 | bfd_vma offset; | |
5bd4f169 | 14995 | |
c316a17c AM |
14996 | again: |
14997 | orig_rel = *rel; | |
14998 | ||
4ce794b7 | 14999 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 15000 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
15001 | |
15002 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
15003 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
15004 | proper TOC base to use. */ | |
15005 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
15006 | && wrel != relocs |
15007 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 15008 | && is_opd) |
c316a17c | 15009 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 15010 | |
4ce794b7 AM |
15011 | sym = NULL; |
15012 | sec = NULL; | |
039b3fef | 15013 | h_elf = NULL; |
4ce794b7 | 15014 | sym_name = NULL; |
0a1b45a2 AM |
15015 | unresolved_reloc = false; |
15016 | warned = false; | |
65f38f15 | 15017 | |
0b13192e | 15018 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
15019 | { |
15020 | /* It's a local symbol. */ | |
74f0fb50 | 15021 | struct _opd_sec_data *opd; |
4025353c | 15022 | |
5bd4f169 AM |
15023 | sym = local_syms + r_symndx; |
15024 | sec = local_sections[r_symndx]; | |
26c61ae5 | 15025 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 15026 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 15027 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
15028 | opd = get_opd_info (sec); |
15029 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 15030 | { |
51aecdc5 AM |
15031 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
15032 | + rel->r_addend)]; | |
4025353c AM |
15033 | if (adjust == -1) |
15034 | relocation = 0; | |
15035 | else | |
4cc603a5 AM |
15036 | { |
15037 | /* If this is a relocation against the opd section sym | |
15038 | and we have edited .opd, adjust the reloc addend so | |
15039 | that ld -r and ld --emit-relocs output is correct. | |
15040 | If it is a reloc against some other .opd symbol, | |
15041 | then the symbol value will be adjusted later. */ | |
15042 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
15043 | rel->r_addend += adjust; | |
15044 | else | |
15045 | relocation += adjust; | |
15046 | } | |
1e2f5b6e | 15047 | } |
5bd4f169 AM |
15048 | } |
15049 | else | |
15050 | { | |
0a1b45a2 | 15051 | bool ignored; |
62d887d4 | 15052 | |
b2a8e766 AM |
15053 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
15054 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 15055 | h_elf, sec, relocation, |
62d887d4 | 15056 | unresolved_reloc, warned, ignored); |
039b3fef AM |
15057 | sym_name = h_elf->root.root.string; |
15058 | sym_type = h_elf->type; | |
b69fdb4e AM |
15059 | if (sec != NULL |
15060 | && sec->owner == output_bfd | |
15061 | && strcmp (sec->name, ".opd") == 0) | |
15062 | { | |
15063 | /* This is a symbol defined in a linker script. All | |
15064 | such are defined in output sections, even those | |
15065 | defined by simple assignment from a symbol defined in | |
15066 | an input section. Transfer the symbol to an | |
15067 | appropriate input .opd section, so that a branch to | |
15068 | this symbol will be mapped to the location specified | |
15069 | by the opd entry. */ | |
15070 | struct bfd_link_order *lo; | |
15071 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
15072 | if (lo->type == bfd_indirect_link_order) | |
15073 | { | |
15074 | asection *isec = lo->u.indirect.section; | |
15075 | if (h_elf->root.u.def.value >= isec->output_offset | |
15076 | && h_elf->root.u.def.value < (isec->output_offset | |
15077 | + isec->size)) | |
15078 | { | |
15079 | h_elf->root.u.def.value -= isec->output_offset; | |
15080 | h_elf->root.u.def.section = isec; | |
15081 | sec = isec; | |
15082 | break; | |
15083 | } | |
15084 | } | |
15085 | } | |
5bd4f169 | 15086 | } |
ed7007c1 | 15087 | h = ppc_elf_hash_entry (h_elf); |
5bd4f169 | 15088 | |
dbaa2011 | 15089 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
15090 | { |
15091 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
15092 | input_bfd, input_section, | |
0930cb30 | 15093 | contents, rel->r_offset); |
c316a17c AM |
15094 | wrel->r_offset = rel->r_offset; |
15095 | wrel->r_info = 0; | |
15096 | wrel->r_addend = 0; | |
15097 | ||
15098 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 15099 | symbols defined in discarded sections. Not done for |
c316a17c AM |
15100 | non-debug to preserve relocs in .eh_frame which the |
15101 | eh_frame editing code expects to be present. */ | |
15102 | if (bfd_link_relocatable (info) | |
15103 | && (input_section->flags & SEC_DEBUGGING)) | |
15104 | wrel--; | |
15105 | ||
15106 | continue; | |
15107 | } | |
ab96bf03 | 15108 | |
0e1862bb | 15109 | if (bfd_link_relocatable (info)) |
c316a17c | 15110 | goto copy_reloc; |
ab96bf03 | 15111 | |
f40da81b AM |
15112 | if (h != NULL && &h->elf == htab->elf.hgot) |
15113 | { | |
6f20ed8a | 15114 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b | 15115 | sec = bfd_abs_section_ptr; |
0a1b45a2 | 15116 | unresolved_reloc = false; |
f40da81b AM |
15117 | } |
15118 | ||
951fd09b AM |
15119 | /* TLS optimizations. Replace instruction sequences and relocs |
15120 | based on information we collected in tls_optimize. We edit | |
15121 | RELOCS so that --emit-relocs will output something sensible | |
15122 | for the final instruction stream. */ | |
15123 | tls_mask = 0; | |
15124 | tls_gd = 0; | |
0d4792f7 | 15125 | toc_symndx = 0; |
727fc41e AM |
15126 | if (h != NULL) |
15127 | tls_mask = h->tls_mask; | |
15128 | else if (local_got_ents != NULL) | |
411e1bfb | 15129 | { |
e054468f AM |
15130 | struct plt_entry **local_plt = (struct plt_entry **) |
15131 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 15132 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 15133 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
15134 | tls_mask = lgot_masks[r_symndx]; |
15135 | } | |
37da22e5 | 15136 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
15137 | && (r_type == R_PPC64_TLS |
15138 | || r_type == R_PPC64_TLSGD | |
15139 | || r_type == R_PPC64_TLSLD)) | |
15140 | { | |
15141 | /* Check for toc tls entries. */ | |
f961d9dd | 15142 | unsigned char *toc_tls; |
0d4792f7 | 15143 | |
727fc41e AM |
15144 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15145 | &local_syms, rel, input_bfd)) | |
0a1b45a2 | 15146 | return false; |
0d4792f7 | 15147 | |
727fc41e AM |
15148 | if (toc_tls) |
15149 | tls_mask = *toc_tls; | |
0d4792f7 AM |
15150 | } |
15151 | ||
15152 | /* Check that tls relocs are used with tls syms, and non-tls | |
15153 | relocs are used with non-tls syms. */ | |
cf35638d | 15154 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
15155 | && r_type != R_PPC64_NONE |
15156 | && (h == NULL | |
039b3fef AM |
15157 | || h->elf.root.type == bfd_link_hash_defined |
15158 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 15159 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 15160 | { |
37da22e5 | 15161 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
15162 | && (r_type == R_PPC64_TLS |
15163 | || r_type == R_PPC64_TLSGD | |
15164 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
15165 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
15166 | ; | |
15167 | else | |
25f53a85 | 15168 | info->callbacks->einfo |
1d483afe | 15169 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 15170 | /* xgettext:c-format */ |
c1c8c1ef | 15171 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 15172 | /* xgettext:c-format */ |
c1c8c1ef | 15173 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 15174 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
15175 | ppc64_elf_howto_table[r_type]->name, |
15176 | sym_name); | |
411e1bfb AM |
15177 | } |
15178 | ||
15179 | /* Ensure reloc mapping code below stays sane. */ | |
15180 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
15181 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
15182 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
15183 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
15184 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
15185 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
15186 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
15187 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
15188 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
15189 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
15190 | abort (); | |
0d4792f7 | 15191 | |
411e1bfb AM |
15192 | switch (r_type) |
15193 | { | |
15194 | default: | |
411e1bfb AM |
15195 | break; |
15196 | ||
ba761f19 | 15197 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 15198 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
2365f8d7 | 15199 | if ((insn & (0x3fu << 26)) != 58u << 26) |
ba761f19 AM |
15200 | abort (); |
15201 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 15202 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
15203 | r_type = R_PPC64_TOC16_LO; |
15204 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15205 | break; | |
15206 | ||
411e1bfb AM |
15207 | case R_PPC64_TOC16: |
15208 | case R_PPC64_TOC16_LO: | |
15209 | case R_PPC64_TOC16_DS: | |
15210 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
15211 | { |
15212 | /* Check for toc tls entries. */ | |
f961d9dd | 15213 | unsigned char *toc_tls; |
951fd09b | 15214 | int retval; |
411e1bfb | 15215 | |
3a71aa26 AM |
15216 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15217 | &local_syms, rel, input_bfd); | |
951fd09b | 15218 | if (retval == 0) |
0a1b45a2 | 15219 | return false; |
411e1bfb AM |
15220 | |
15221 | if (toc_tls) | |
15222 | { | |
951fd09b | 15223 | tls_mask = *toc_tls; |
411e1bfb AM |
15224 | if (r_type == R_PPC64_TOC16_DS |
15225 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 15226 | { |
37da22e5 | 15227 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
15228 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
15229 | goto toctprel; | |
15230 | } | |
411e1bfb | 15231 | else |
951fd09b AM |
15232 | { |
15233 | /* If we found a GD reloc pair, then we might be | |
15234 | doing a GD->IE transition. */ | |
15235 | if (retval == 2) | |
15236 | { | |
b00a0a86 | 15237 | tls_gd = TLS_GDIE; |
37da22e5 AM |
15238 | if ((tls_mask & TLS_TLS) != 0 |
15239 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 15240 | goto tls_ldgd_opt; |
951fd09b AM |
15241 | } |
15242 | else if (retval == 3) | |
15243 | { | |
37da22e5 AM |
15244 | if ((tls_mask & TLS_TLS) != 0 |
15245 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 15246 | goto tls_ldgd_opt; |
951fd09b AM |
15247 | } |
15248 | } | |
411e1bfb AM |
15249 | } |
15250 | } | |
15251 | break; | |
15252 | ||
9d6ded02 AM |
15253 | case R_PPC64_GOT_TPREL16_HI: |
15254 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 15255 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
15256 | && (tls_mask & TLS_TPREL) == 0) |
15257 | { | |
15258 | rel->r_offset -= d_offset; | |
95f0d0d2 | 15259 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
15260 | r_type = R_PPC64_NONE; |
15261 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15262 | } | |
15263 | break; | |
15264 | ||
411e1bfb AM |
15265 | case R_PPC64_GOT_TPREL16_DS: |
15266 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 15267 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15268 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15269 | { |
81407a69 | 15270 | toctprel: |
95f0d0d2 | 15271 | insn = bfd_get_32 (input_bfd, |
c316a17c | 15272 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
15273 | insn &= 31 << 21; |
15274 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 15275 | bfd_put_32 (input_bfd, insn, |
c316a17c | 15276 | contents + rel->r_offset - d_offset); |
411e1bfb | 15277 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
15278 | if (toc_symndx != 0) |
15279 | { | |
15280 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 15281 | rel->r_addend = toc_addend; |
0d4792f7 AM |
15282 | /* We changed the symbol. Start over in order to |
15283 | get h, sym, sec etc. right. */ | |
c316a17c | 15284 | goto again; |
0d4792f7 AM |
15285 | } |
15286 | else | |
15287 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
15288 | } |
15289 | break; | |
15290 | ||
87c69f97 | 15291 | case R_PPC64_GOT_TPREL_PCREL34: |
c213164a AM |
15292 | if ((tls_mask & TLS_TLS) != 0 |
15293 | && (tls_mask & TLS_TPREL) == 0) | |
15294 | { | |
15295 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
15296 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15297 | pinsn <<= 32; | |
15298 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15299 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
15300 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
15301 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15302 | contents + rel->r_offset); | |
15303 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15304 | contents + rel->r_offset + 4); | |
15305 | r_type = R_PPC64_TPREL34; | |
15306 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15307 | } | |
15308 | break; | |
15309 | ||
411e1bfb | 15310 | case R_PPC64_TLS: |
37da22e5 | 15311 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15312 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15313 | { |
c213164a | 15314 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
15315 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
15316 | if (insn == 0) | |
c213164a AM |
15317 | break; |
15318 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 15319 | { |
c213164a AM |
15320 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15321 | /* Was PPC64_TLS which sits on insn boundary, now | |
15322 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
15323 | rel->r_offset += d_offset; | |
15324 | r_type = R_PPC64_TPREL16_LO; | |
15325 | if (toc_symndx != 0) | |
15326 | { | |
15327 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
15328 | rel->r_addend = toc_addend; | |
15329 | /* We changed the symbol. Start over in order to | |
15330 | get h, sym, sec etc. right. */ | |
15331 | goto again; | |
15332 | } | |
15333 | else | |
15334 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15335 | } | |
15336 | else if ((rel->r_offset & 3) == 1) | |
15337 | { | |
15338 | /* For pcrel IE to LE we already have the full | |
15339 | offset and thus don't need an addi here. A nop | |
15340 | or mr will do. */ | |
2365f8d7 | 15341 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
15342 | { |
15343 | /* Extract regs from addi rt,ra,si. */ | |
15344 | unsigned int rt = (insn >> 21) & 0x1f; | |
15345 | unsigned int ra = (insn >> 16) & 0x1f; | |
15346 | if (rt == ra) | |
15347 | insn = NOP; | |
15348 | else | |
15349 | { | |
15350 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
15351 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
15352 | insn |= (31u << 26) | (444u << 1); | |
15353 | } | |
15354 | } | |
15355 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 15356 | } |
411e1bfb AM |
15357 | } |
15358 | break; | |
15359 | ||
411e1bfb AM |
15360 | case R_PPC64_GOT_TLSGD16_HI: |
15361 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 15362 | tls_gd = TLS_GDIE; |
37da22e5 | 15363 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
15364 | goto tls_gdld_hi; |
15365 | break; | |
15366 | ||
411e1bfb AM |
15367 | case R_PPC64_GOT_TLSLD16_HI: |
15368 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 15369 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 15370 | { |
951fd09b AM |
15371 | tls_gdld_hi: |
15372 | if ((tls_mask & tls_gd) != 0) | |
15373 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
15374 | + R_PPC64_GOT_TPREL16_DS); | |
15375 | else | |
411e1bfb | 15376 | { |
4fe5ca5b | 15377 | rel->r_offset -= d_offset; |
95f0d0d2 | 15378 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 15379 | r_type = R_PPC64_NONE; |
411e1bfb | 15380 | } |
951fd09b | 15381 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
15382 | } |
15383 | break; | |
15384 | ||
951fd09b AM |
15385 | case R_PPC64_GOT_TLSGD16: |
15386 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 15387 | tls_gd = TLS_GDIE; |
37da22e5 | 15388 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 15389 | goto tls_ldgd_opt; |
951fd09b | 15390 | break; |
411e1bfb | 15391 | |
951fd09b AM |
15392 | case R_PPC64_GOT_TLSLD16: |
15393 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 15394 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 15395 | { |
b9f04fe0 | 15396 | unsigned int insn1, insn2; |
102890f0 AM |
15397 | |
15398 | tls_ldgd_opt: | |
727fc41e AM |
15399 | offset = (bfd_vma) -1; |
15400 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
15401 | __tls_get_addr calls, we must trust that the call | |
15402 | stays with its arg setup insns, ie. that the next | |
15403 | reloc is the __tls_get_addr call associated with | |
15404 | the current reloc. Edit both insns. */ | |
9737e8af | 15405 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
15406 | && rel + 1 < relend |
15407 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
9e7028aa AM |
15408 | htab->tls_get_addr_fd, |
15409 | htab->tga_desc_fd, | |
727fc41e | 15410 | htab->tls_get_addr, |
9e7028aa | 15411 | htab->tga_desc)) |
727fc41e | 15412 | offset = rel[1].r_offset; |
b86ac8e3 AM |
15413 | /* We read the low GOT_TLS (or TOC16) insn because we |
15414 | need to keep the destination reg. It may be | |
15415 | something other than the usual r3, and moved to r3 | |
15416 | before the call by intervening code. */ | |
95f0d0d2 | 15417 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 15418 | contents + rel->r_offset - d_offset); |
102890f0 | 15419 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 15420 | { |
102890f0 | 15421 | /* IE */ |
b86ac8e3 | 15422 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 15423 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 15424 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 15425 | if (offset != (bfd_vma) -1) |
f58d5a2d | 15426 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
15427 | if (r_type == R_PPC64_TOC16 |
15428 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 15429 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
15430 | else |
15431 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
15432 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
15433 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
15434 | } | |
15435 | else | |
15436 | { | |
15437 | /* LE */ | |
b86ac8e3 AM |
15438 | insn1 &= 0x1f << 21; |
15439 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
15440 | insn2 = 0x38630000; /* addi 3,3,0 */ |
15441 | if (tls_gd == 0) | |
951fd09b | 15442 | { |
102890f0 | 15443 | /* Was an LD reloc. */ |
71c4e95a | 15444 | r_symndx = STN_UNDEF; |
102890f0 | 15445 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 15446 | } |
102890f0 | 15447 | else if (toc_symndx != 0) |
3a71aa26 AM |
15448 | { |
15449 | r_symndx = toc_symndx; | |
15450 | rel->r_addend = toc_addend; | |
15451 | } | |
102890f0 AM |
15452 | r_type = R_PPC64_TPREL16_HA; |
15453 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
15454 | if (offset != (bfd_vma) -1) |
15455 | { | |
15456 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
15457 | R_PPC64_TPREL16_LO); | |
15458 | rel[1].r_offset = offset + d_offset; | |
15459 | rel[1].r_addend = rel->r_addend; | |
15460 | } | |
102890f0 | 15461 | } |
95f0d0d2 | 15462 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 15463 | contents + rel->r_offset - d_offset); |
727fc41e | 15464 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
15465 | { |
15466 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
15467 | if (offset + 8 <= input_section->size) | |
15468 | { | |
15469 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
15470 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
15471 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
15472 | } | |
15473 | } | |
727fc41e AM |
15474 | if ((tls_mask & tls_gd) == 0 |
15475 | && (tls_gd == 0 || toc_symndx != 0)) | |
15476 | { | |
15477 | /* We changed the symbol. Start over in order | |
15478 | to get h, sym, sec etc. right. */ | |
c316a17c | 15479 | goto again; |
727fc41e AM |
15480 | } |
15481 | } | |
15482 | break; | |
15483 | ||
87c69f97 | 15484 | case R_PPC64_GOT_TLSGD_PCREL34: |
c213164a AM |
15485 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
15486 | { | |
15487 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15488 | pinsn <<= 32; | |
15489 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15490 | if ((tls_mask & TLS_GDIE) != 0) | |
15491 | { | |
15492 | /* IE, pla -> pld */ | |
15493 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
87c69f97 | 15494 | r_type = R_PPC64_GOT_TPREL_PCREL34; |
c213164a AM |
15495 | } |
15496 | else | |
15497 | { | |
15498 | /* LE, pla pcrel -> paddi r13 */ | |
15499 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15500 | r_type = R_PPC64_TPREL34; | |
15501 | } | |
15502 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15503 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15504 | contents + rel->r_offset); | |
15505 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15506 | contents + rel->r_offset + 4); | |
15507 | } | |
15508 | break; | |
15509 | ||
87c69f97 | 15510 | case R_PPC64_GOT_TLSLD_PCREL34: |
c213164a AM |
15511 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
15512 | { | |
15513 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15514 | pinsn <<= 32; | |
15515 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15516 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15517 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15518 | contents + rel->r_offset); | |
15519 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15520 | contents + rel->r_offset + 4); | |
15521 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15522 | r_symndx = STN_UNDEF; | |
15523 | r_type = R_PPC64_TPREL34; | |
15524 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15525 | goto again; | |
15526 | } | |
15527 | break; | |
15528 | ||
727fc41e | 15529 | case R_PPC64_TLSGD: |
37da22e5 | 15530 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 15531 | && rel + 1 < relend) |
727fc41e | 15532 | { |
b9f04fe0 | 15533 | unsigned int insn2; |
5663e321 | 15534 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15535 | |
4a421c53 | 15536 | offset = rel->r_offset; |
5663e321 | 15537 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15538 | { |
15539 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15540 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15541 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15542 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15543 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15544 | break; | |
15545 | } | |
15546 | ||
15547 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15548 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15549 | ||
b00a0a86 | 15550 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
15551 | { |
15552 | /* IE */ | |
15553 | r_type = R_PPC64_NONE; | |
15554 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
15555 | } | |
15556 | else | |
15557 | { | |
15558 | /* LE */ | |
15559 | if (toc_symndx != 0) | |
15560 | { | |
15561 | r_symndx = toc_symndx; | |
15562 | rel->r_addend = toc_addend; | |
15563 | } | |
c213164a AM |
15564 | if (r_type1 == R_PPC64_REL24_NOTOC |
15565 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15566 | { | |
15567 | r_type = R_PPC64_NONE; | |
15568 | insn2 = NOP; | |
15569 | } | |
15570 | else | |
15571 | { | |
15572 | rel->r_offset = offset + d_offset; | |
15573 | r_type = R_PPC64_TPREL16_LO; | |
15574 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15575 | } | |
727fc41e AM |
15576 | } |
15577 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15578 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15579 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15580 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15581 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15582 | if ((tls_mask & TLS_GDIE) == 0 |
15583 | && toc_symndx != 0 | |
15584 | && r_type != R_PPC64_NONE) | |
c316a17c | 15585 | goto again; |
411e1bfb | 15586 | } |
411e1bfb AM |
15587 | break; |
15588 | ||
727fc41e | 15589 | case R_PPC64_TLSLD: |
37da22e5 | 15590 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 15591 | && rel + 1 < relend) |
727fc41e | 15592 | { |
b9f04fe0 | 15593 | unsigned int insn2; |
5663e321 | 15594 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15595 | |
4a421c53 | 15596 | offset = rel->r_offset; |
5663e321 | 15597 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15598 | { |
15599 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15600 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15601 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15602 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15603 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15604 | break; | |
15605 | } | |
15606 | ||
15607 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15608 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15609 | ||
c213164a AM |
15610 | if (r_type1 == R_PPC64_REL24_NOTOC |
15611 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15612 | { | |
15613 | r_type = R_PPC64_NONE; | |
15614 | insn2 = NOP; | |
15615 | } | |
15616 | else | |
15617 | { | |
15618 | rel->r_offset = offset + d_offset; | |
15619 | r_symndx = STN_UNDEF; | |
15620 | r_type = R_PPC64_TPREL16_LO; | |
15621 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15622 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15623 | } | |
727fc41e | 15624 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
15625 | /* Zap the reloc on the _tls_get_addr call too. */ |
15626 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15627 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15628 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15629 | if (r_type != R_PPC64_NONE) |
15630 | goto again; | |
727fc41e AM |
15631 | } |
15632 | break; | |
15633 | ||
411e1bfb | 15634 | case R_PPC64_DTPMOD64: |
951fd09b AM |
15635 | if (rel + 1 < relend |
15636 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
15637 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 15638 | { |
951fd09b AM |
15639 | if ((tls_mask & TLS_GD) == 0) |
15640 | { | |
15641 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 15642 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
15643 | r_type = R_PPC64_TPREL64; |
15644 | else | |
15645 | { | |
4ce794b7 | 15646 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
15647 | r_type = R_PPC64_NONE; |
15648 | } | |
15649 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15650 | } | |
15651 | } | |
15652 | else | |
15653 | { | |
15654 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15655 | { |
4ce794b7 | 15656 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15657 | r_type = R_PPC64_NONE; |
951fd09b | 15658 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15659 | } |
411e1bfb AM |
15660 | } |
15661 | break; | |
15662 | ||
15663 | case R_PPC64_TPREL64: | |
951fd09b | 15664 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15665 | { |
15666 | r_type = R_PPC64_NONE; | |
15667 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15668 | } | |
15669 | break; | |
52a82034 | 15670 | |
006589cf AM |
15671 | case R_PPC64_ENTRY: |
15672 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15673 | if (!bfd_link_pic (info) | |
15674 | && !info->traditional_format | |
15675 | && relocation + 0x80008000 <= 0xffffffff) | |
15676 | { | |
15677 | unsigned int insn1, insn2; | |
15678 | ||
15679 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15680 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15681 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15682 | && insn2 == ADD_R2_R2_R12) | |
15683 | { | |
95f0d0d2 | 15684 | bfd_put_32 (input_bfd, |
006589cf AM |
15685 | LIS_R2 + PPC_HA (relocation), |
15686 | contents + rel->r_offset); | |
95f0d0d2 | 15687 | bfd_put_32 (input_bfd, |
006589cf AM |
15688 | ADDI_R2_R2 + PPC_LO (relocation), |
15689 | contents + rel->r_offset + 4); | |
15690 | } | |
15691 | } | |
15692 | else | |
15693 | { | |
15694 | relocation -= (rel->r_offset | |
15695 | + input_section->output_offset | |
15696 | + input_section->output_section->vma); | |
15697 | if (relocation + 0x80008000 <= 0xffffffff) | |
15698 | { | |
15699 | unsigned int insn1, insn2; | |
15700 | ||
15701 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15702 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15703 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15704 | && insn2 == ADD_R2_R2_R12) | |
15705 | { | |
95f0d0d2 | 15706 | bfd_put_32 (input_bfd, |
006589cf AM |
15707 | ADDIS_R2_R12 + PPC_HA (relocation), |
15708 | contents + rel->r_offset); | |
95f0d0d2 | 15709 | bfd_put_32 (input_bfd, |
006589cf AM |
15710 | ADDI_R2_R2 + PPC_LO (relocation), |
15711 | contents + rel->r_offset + 4); | |
15712 | } | |
15713 | } | |
15714 | } | |
15715 | break; | |
15716 | ||
52a82034 AM |
15717 | case R_PPC64_REL16_HA: |
15718 | /* If we are generating a non-PIC executable, edit | |
15719 | . 0: addis 2,12,.TOC.-0b@ha | |
15720 | . addi 2,2,.TOC.-0b@l | |
15721 | used by ELFv2 global entry points to set up r2, to | |
15722 | . lis 2,.TOC.@ha | |
15723 | . addi 2,2,.TOC.@l | |
15724 | if .TOC. is in range. */ | |
0e1862bb | 15725 | if (!bfd_link_pic (info) |
810d4e75 | 15726 | && !info->traditional_format |
006589cf | 15727 | && !htab->opd_abi |
4f038ee5 | 15728 | && rel->r_addend == d_offset |
52a82034 AM |
15729 | && h != NULL && &h->elf == htab->elf.hgot |
15730 | && rel + 1 < relend | |
15731 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15732 | && rel[1].r_offset == rel->r_offset + 4 | |
15733 | && rel[1].r_addend == rel->r_addend + 4 | |
15734 | && relocation + 0x80008000 <= 0xffffffff) | |
15735 | { | |
15736 | unsigned int insn1, insn2; | |
4a421c53 | 15737 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
15738 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15739 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15740 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15741 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15742 | { |
15743 | r_type = R_PPC64_ADDR16_HA; | |
15744 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15745 | rel->r_addend -= d_offset; | |
15746 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15747 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15748 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15749 | } |
15750 | } | |
15751 | break; | |
411e1bfb AM |
15752 | } |
15753 | ||
15754 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15755 | insn = 0; |
b25116a9 AM |
15756 | max_br_offset = 1 << 25; |
15757 | addend = rel->r_addend; | |
bc30df16 | 15758 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15759 | switch (r_type) |
5bd4f169 AM |
15760 | { |
15761 | default: | |
65f38f15 | 15762 | break; |
5bd4f169 | 15763 | |
3b421ab3 AM |
15764 | case R_PPC64_TOCSAVE: |
15765 | if (relocation + addend == (rel->r_offset | |
15766 | + input_section->output_offset | |
15767 | + input_section->output_section->vma) | |
15768 | && tocsave_find (htab, NO_INSERT, | |
15769 | &local_syms, rel, input_bfd)) | |
15770 | { | |
15771 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15772 | if (insn == NOP | |
15773 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15774 | bfd_put_32 (input_bfd, |
15775 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15776 | contents + rel->r_offset); |
15777 | } | |
15778 | break; | |
15779 | ||
65f38f15 AM |
15780 | /* Branch taken prediction relocations. */ |
15781 | case R_PPC64_ADDR14_BRTAKEN: | |
15782 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15783 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15784 | /* Fall through. */ |
65f38f15 | 15785 | |
86c76c7b | 15786 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15787 | case R_PPC64_ADDR14_BRNTAKEN: |
15788 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15789 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15790 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15791 | /* Fall through. */ |
86c76c7b | 15792 | |
b25116a9 AM |
15793 | case R_PPC64_REL14: |
15794 | max_br_offset = 1 << 15; | |
1a0670f3 | 15795 | /* Fall through. */ |
5bd4f169 | 15796 | |
65f38f15 | 15797 | case R_PPC64_REL24: |
05d0e962 | 15798 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15799 | case R_PPC64_PLTCALL: |
5663e321 | 15800 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
15801 | /* Calls to functions with a different TOC, such as calls to |
15802 | shared objects, need to alter the TOC pointer. This is | |
15803 | done using a linkage stub. A REL24 branching to these | |
15804 | linkage stubs needs to be followed by a nop, as the nop | |
15805 | will be replaced with an instruction to restore the TOC | |
15806 | base pointer. */ | |
8387904d | 15807 | fdh = h; |
b31867b6 AM |
15808 | if (h != NULL |
15809 | && h->oh != NULL | |
15810 | && h->oh->is_func_descriptor) | |
15811 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15812 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15813 | htab); | |
5663e321 AM |
15814 | if ((r_type == R_PPC64_PLTCALL |
15815 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 15816 | && stub_entry != NULL |
05d0e962 AM |
15817 | && stub_entry->stub_type >= ppc_stub_plt_call |
15818 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15819 | stub_entry = NULL; |
15820 | ||
6abec6bc | 15821 | if (stub_entry != NULL |
d0abeec8 AM |
15822 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
15823 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 15824 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15825 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15826 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15827 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15828 | { |
0a1b45a2 | 15829 | bool can_plt_call = false; |
721956f4 | 15830 | |
6e1816be AM |
15831 | if (stub_entry->stub_type == ppc_stub_plt_call |
15832 | && !htab->opd_abi | |
15833 | && htab->params->plt_localentry0 != 0 | |
9e51d549 | 15834 | && h != NULL |
6e1816be AM |
15835 | && is_elfv2_localentry0 (&h->elf)) |
15836 | { | |
15837 | /* The function doesn't use or change r2. */ | |
0a1b45a2 | 15838 | can_plt_call = true; |
6e1816be | 15839 | } |
05d0e962 AM |
15840 | else if (r_type == R_PPC64_REL24_NOTOC) |
15841 | { | |
15842 | /* NOTOC calls don't need to restore r2. */ | |
0a1b45a2 | 15843 | can_plt_call = true; |
05d0e962 | 15844 | } |
6e1816be | 15845 | |
f378ab09 | 15846 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15847 | branch and link followed by a nop. The nop is |
15848 | replaced by an insn to restore r2. */ | |
6e1816be | 15849 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15850 | { |
ba8ca3e7 AM |
15851 | unsigned long br; |
15852 | ||
15853 | br = bfd_get_32 (input_bfd, | |
15854 | contents + rel->r_offset); | |
15855 | if ((br & 1) != 0) | |
41bd81ab | 15856 | { |
ba8ca3e7 AM |
15857 | unsigned long nop; |
15858 | ||
15859 | nop = bfd_get_32 (input_bfd, | |
15860 | contents + rel->r_offset + 4); | |
23cedd1d | 15861 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
0a1b45a2 | 15862 | can_plt_call = true; |
23cedd1d AM |
15863 | else if (nop == NOP |
15864 | || nop == CROR_151515 | |
15865 | || nop == CROR_313131) | |
a7f2871e | 15866 | { |
ba8ca3e7 | 15867 | if (h != NULL |
ed7007c1 | 15868 | && is_tls_get_addr (&h->elf, htab) |
7c9cf415 | 15869 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15870 | { |
15871 | /* Special stub used, leave nop alone. */ | |
15872 | } | |
15873 | else | |
a078d95a AM |
15874 | bfd_put_32 (input_bfd, |
15875 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 | 15876 | contents + rel->r_offset + 4); |
0a1b45a2 | 15877 | can_plt_call = true; |
a7f2871e | 15878 | } |
41bd81ab | 15879 | } |
5bd4f169 | 15880 | } |
721956f4 | 15881 | |
ba8ca3e7 | 15882 | if (!can_plt_call && h != NULL) |
721956f4 | 15883 | { |
ba8ca3e7 AM |
15884 | const char *name = h->elf.root.root.string; |
15885 | ||
15886 | if (*name == '.') | |
15887 | ++name; | |
15888 | ||
3f3328b8 | 15889 | if (startswith (name, "__libc_start_main") |
ba8ca3e7 | 15890 | && (name[17] == 0 || name[17] == '@')) |
6ab189d5 | 15891 | { |
ba8ca3e7 AM |
15892 | /* Allow crt1 branch to go via a toc adjusting |
15893 | stub. Other calls that never return could do | |
15894 | the same, if we could detect such. */ | |
0a1b45a2 | 15895 | can_plt_call = true; |
6ab189d5 | 15896 | } |
ba8ca3e7 AM |
15897 | } |
15898 | ||
15899 | if (!can_plt_call) | |
15900 | { | |
15901 | /* g++ as of 20130507 emits self-calls without a | |
15902 | following nop. This is arguably wrong since we | |
15903 | have conflicting information. On the one hand a | |
15904 | global symbol and on the other a local call | |
15905 | sequence, but don't error for this special case. | |
15906 | It isn't possible to cheaply verify we have | |
15907 | exactly such a call. Allow all calls to the same | |
15908 | section. */ | |
15909 | asection *code_sec = sec; | |
15910 | ||
15911 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15912 | { |
ba8ca3e7 AM |
15913 | bfd_vma off = (relocation + addend |
15914 | - sec->output_section->vma | |
15915 | - sec->output_offset); | |
bc30df16 | 15916 | |
0a1b45a2 | 15917 | opd_entry_value (sec, off, &code_sec, NULL, false); |
ad8e1ba5 | 15918 | } |
ba8ca3e7 | 15919 | if (code_sec == input_section) |
0a1b45a2 | 15920 | can_plt_call = true; |
ba8ca3e7 AM |
15921 | } |
15922 | ||
15923 | if (!can_plt_call) | |
15924 | { | |
05d0e962 AM |
15925 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15926 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15927 | info->callbacks->einfo |
695344c0 | 15928 | /* xgettext:c-format */ |
c1c8c1ef | 15929 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15930 | "(plt call stub)\n"), |
4805fc55 AM |
15931 | input_bfd, input_section, rel->r_offset, sym_name); |
15932 | else | |
15933 | info->callbacks->einfo | |
695344c0 | 15934 | /* xgettext:c-format */ |
c1c8c1ef | 15935 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15936 | "(toc save/adjust stub)\n"), |
4805fc55 | 15937 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15938 | |
15939 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 15940 | ret = false; |
721956f4 AM |
15941 | } |
15942 | ||
b25116a9 | 15943 | if (can_plt_call |
05d0e962 AM |
15944 | && stub_entry->stub_type >= ppc_stub_plt_call |
15945 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
0a1b45a2 | 15946 | unresolved_reloc = false; |
b25116a9 AM |
15947 | } |
15948 | ||
6abec6bc AM |
15949 | if ((stub_entry == NULL |
15950 | || stub_entry->stub_type == ppc_stub_long_branch | |
15951 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15952 | && get_opd_info (sec) != NULL) |
15953 | { | |
15954 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15955 | bfd_vma off = (relocation + addend |
15956 | - sec->output_section->vma | |
15957 | - sec->output_offset); | |
0a1b45a2 | 15958 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, false); |
8387904d AM |
15959 | if (dest != (bfd_vma) -1) |
15960 | { | |
15961 | relocation = dest; | |
15962 | addend = 0; | |
bc30df16 | 15963 | reloc_dest = DEST_OPD; |
8387904d AM |
15964 | } |
15965 | } | |
15966 | ||
b25116a9 AM |
15967 | /* If the branch is out of reach we ought to have a long |
15968 | branch stub. */ | |
15969 | from = (rel->r_offset | |
15970 | + input_section->output_offset | |
15971 | + input_section->output_section->vma); | |
15972 | ||
6911b7dc AM |
15973 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15974 | ? fdh->elf.other | |
15975 | : sym->st_other); | |
15976 | ||
6abec6bc AM |
15977 | if (stub_entry != NULL |
15978 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15979 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15980 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15981 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15982 | || (relocation + addend - from + max_br_offset | |
15983 | < 2 * max_br_offset))) | |
15984 | /* Don't use the stub if this branch is in range. */ | |
15985 | stub_entry = NULL; | |
b25116a9 | 15986 | |
05d0e962 AM |
15987 | if (stub_entry != NULL |
15988 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15989 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15990 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15991 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15992 | && (r_type != R_PPC64_REL24_NOTOC | |
15993 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15994 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15995 | && (relocation + addend - from + max_br_offset |
15996 | < 2 * max_br_offset)) | |
15997 | stub_entry = NULL; | |
15998 | ||
15999 | if (stub_entry != NULL | |
16000 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
16001 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
16002 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
16003 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
16004 | && r_type == R_PPC64_REL24_NOTOC | |
16005 | && (relocation + addend - from + max_br_offset | |
16006 | < 2 * max_br_offset)) | |
16007 | stub_entry = NULL; | |
16008 | ||
b25116a9 AM |
16009 | if (stub_entry != NULL) |
16010 | { | |
16011 | /* Munge up the value and addend so that we call the stub | |
16012 | rather than the procedure directly. */ | |
a4b6fadd AM |
16013 | asection *stub_sec = stub_entry->group->stub_sec; |
16014 | ||
16015 | if (stub_entry->stub_type == ppc_stub_save_res) | |
16016 | relocation += (stub_sec->output_offset | |
16017 | + stub_sec->output_section->vma | |
16018 | + stub_sec->size - htab->sfpr->size | |
16019 | - htab->sfpr->output_offset | |
16020 | - htab->sfpr->output_section->vma); | |
16021 | else | |
16022 | relocation = (stub_entry->stub_offset | |
16023 | + stub_sec->output_offset | |
16024 | + stub_sec->output_section->vma); | |
b25116a9 | 16025 | addend = 0; |
bc30df16 | 16026 | reloc_dest = DEST_STUB; |
3b421ab3 | 16027 | |
29433886 AM |
16028 | if ((((stub_entry->stub_type == ppc_stub_plt_call |
16029 | && ALWAYS_EMIT_R2SAVE) | |
16030 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
16031 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
16032 | && rel + 1 < relend | |
16033 | && rel[1].r_offset == rel->r_offset + 4 | |
16034 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
16035 | || ((stub_entry->stub_type == ppc_stub_long_branch_both | |
16036 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
16037 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
16038 | && r_type == R_PPC64_REL24_NOTOC)) | |
16039 | { | |
16040 | /* Skip over the r2 store at the start of the stub. */ | |
16041 | if (!(stub_entry->stub_type >= ppc_stub_plt_call | |
16042 | && htab->params->tls_get_addr_opt | |
16043 | && h != NULL | |
16044 | && is_tls_get_addr (&h->elf, htab))) | |
16045 | relocation += 4; | |
16046 | } | |
5663e321 AM |
16047 | |
16048 | if (r_type == R_PPC64_REL24_NOTOC | |
16049 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
16050 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
16051 | htab->notoc_plt = 1; | |
b25116a9 AM |
16052 | } |
16053 | ||
16054 | if (insn != 0) | |
16055 | { | |
794e51c0 | 16056 | if (is_isa_v2) |
721956f4 | 16057 | { |
b25116a9 AM |
16058 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
16059 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
16060 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
16061 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
16062 | insn |= 0x02 << 21; | |
16063 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
16064 | insn |= 0x08 << 21; | |
16065 | else | |
16066 | break; | |
16067 | } | |
16068 | else | |
16069 | { | |
16070 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 16071 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 16072 | insn ^= 0x01 << 21; |
721956f4 | 16073 | } |
b25116a9 | 16074 | |
95f0d0d2 | 16075 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 16076 | } |
e86ce104 | 16077 | |
06da1e8e AM |
16078 | /* NOP out calls to undefined weak functions. |
16079 | We can thus call a weak function without first | |
16080 | checking whether the function is defined. */ | |
b25116a9 | 16081 | else if (h != NULL |
039b3fef | 16082 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 16083 | && h->elf.dynindx == -1 |
05d0e962 AM |
16084 | && (r_type == R_PPC64_REL24 |
16085 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 16086 | && relocation == 0 |
4cc603a5 | 16087 | && addend == 0) |
e86ce104 | 16088 | { |
95f0d0d2 | 16089 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 16090 | goto copy_reloc; |
e86ce104 | 16091 | } |
65f38f15 | 16092 | break; |
066f4018 AM |
16093 | |
16094 | case R_PPC64_GOT16_DS: | |
6738c8a7 AM |
16095 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16096 | || !htab->do_toc_opt) | |
06507dab | 16097 | break; |
066f4018 AM |
16098 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16099 | if (relocation + addend - from + 0x8000 < 0x10000 | |
f5b9c288 AM |
16100 | && sec != NULL |
16101 | && sec->output_section != NULL | |
16102 | && !discarded_section (sec) | |
9e51d549 | 16103 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
066f4018 AM |
16104 | { |
16105 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 16106 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
16107 | { |
16108 | insn += (14u << 26) - (58u << 26); | |
16109 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16110 | r_type = R_PPC64_TOC16; | |
16111 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16112 | } | |
16113 | } | |
16114 | break; | |
16115 | ||
16116 | case R_PPC64_GOT16_LO_DS: | |
16117 | case R_PPC64_GOT16_HA: | |
6738c8a7 AM |
16118 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16119 | || !htab->do_toc_opt) | |
06507dab | 16120 | break; |
066f4018 AM |
16121 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16122 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
f5b9c288 AM |
16123 | && sec != NULL |
16124 | && sec->output_section != NULL | |
16125 | && !discarded_section (sec) | |
9e51d549 | 16126 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
066f4018 AM |
16127 | { |
16128 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
fba8689a AM |
16129 | if (r_type == R_PPC64_GOT16_LO_DS |
16130 | && (insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) | |
066f4018 AM |
16131 | { |
16132 | insn += (14u << 26) - (58u << 26); | |
16133 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16134 | r_type = R_PPC64_TOC16_LO; | |
16135 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16136 | } | |
fba8689a AM |
16137 | else if (r_type == R_PPC64_GOT16_HA |
16138 | && (insn & (0x3fu << 26)) == 15u << 26 /* addis */) | |
066f4018 AM |
16139 | { |
16140 | r_type = R_PPC64_TOC16_HA; | |
16141 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16142 | } | |
16143 | } | |
16144 | break; | |
4a421c53 AM |
16145 | |
16146 | case R_PPC64_GOT_PCREL34: | |
6738c8a7 AM |
16147 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
16148 | || !htab->do_toc_opt) | |
06507dab | 16149 | break; |
4a421c53 AM |
16150 | from = (rel->r_offset |
16151 | + input_section->output_section->vma | |
16152 | + input_section->output_offset); | |
6738c8a7 | 16153 | if (!(relocation - from + (1ULL << 33) < 1ULL << 34 |
f5b9c288 AM |
16154 | && sec != NULL |
16155 | && sec->output_section != NULL | |
16156 | && !discarded_section (sec) | |
9e51d549 | 16157 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) |
6738c8a7 AM |
16158 | break; |
16159 | ||
16160 | offset = rel->r_offset; | |
16161 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16162 | pinsn <<= 32; | |
16163 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16164 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16165 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
16166 | break; | |
16167 | ||
16168 | /* Replace with paddi. */ | |
16169 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
16170 | r_type = R_PPC64_PCREL34; | |
16171 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16172 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
16173 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
16174 | /* Fall through. */ | |
4a421c53 AM |
16175 | |
16176 | case R_PPC64_PCREL34: | |
6738c8a7 AM |
16177 | if (!htab->params->no_pcrel_opt |
16178 | && rel + 1 < relend | |
16179 | && rel[1].r_offset == rel->r_offset | |
16180 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT) | |
9e51d549 | 16181 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
4a421c53 AM |
16182 | { |
16183 | offset = rel->r_offset; | |
16184 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16185 | pinsn <<= 32; | |
16186 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16187 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16188 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
16189 | | (14ULL << 26) /* paddi */)) | |
16190 | { | |
6738c8a7 AM |
16191 | bfd_vma off2 = rel[1].r_addend; |
16192 | if (off2 == 0) | |
16193 | /* zero means next insn. */ | |
16194 | off2 = 8; | |
16195 | off2 += offset; | |
16196 | if (off2 + 4 <= input_section->size) | |
4a421c53 | 16197 | { |
6738c8a7 AM |
16198 | uint64_t pinsn2; |
16199 | bfd_signed_vma addend_off; | |
16200 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); | |
16201 | pinsn2 <<= 32; | |
16202 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
4a421c53 | 16203 | { |
6738c8a7 AM |
16204 | if (off2 + 8 > input_section->size) |
16205 | break; | |
16206 | pinsn2 |= bfd_get_32 (input_bfd, | |
16207 | contents + off2 + 4); | |
16208 | } | |
16209 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) | |
16210 | { | |
16211 | addend += addend_off; | |
16212 | rel->r_addend = addend; | |
16213 | bfd_put_32 (input_bfd, pinsn >> 32, | |
16214 | contents + offset); | |
16215 | bfd_put_32 (input_bfd, pinsn, | |
16216 | contents + offset + 4); | |
16217 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
16218 | contents + off2); | |
4a421c53 | 16219 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
6738c8a7 AM |
16220 | bfd_put_32 (input_bfd, pinsn2, |
16221 | contents + off2 + 4); | |
4a421c53 AM |
16222 | } |
16223 | } | |
16224 | } | |
16225 | } | |
16226 | break; | |
65f38f15 | 16227 | } |
5bd4f169 | 16228 | |
411e1bfb | 16229 | tls_type = 0; |
23cedd1d | 16230 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
16231 | switch (r_type) |
16232 | { | |
16233 | default: | |
cf97bcb0 AM |
16234 | /* xgettext:c-format */ |
16235 | _bfd_error_handler (_("%pB: %s unsupported"), | |
16236 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 16237 | |
65f38f15 | 16238 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 16239 | ret = false; |
c316a17c | 16240 | goto copy_reloc; |
5bd4f169 | 16241 | |
65f38f15 | 16242 | case R_PPC64_NONE: |
411e1bfb | 16243 | case R_PPC64_TLS: |
727fc41e AM |
16244 | case R_PPC64_TLSGD: |
16245 | case R_PPC64_TLSLD: | |
3b421ab3 | 16246 | case R_PPC64_TOCSAVE: |
04c9666a AM |
16247 | case R_PPC64_GNU_VTINHERIT: |
16248 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 16249 | case R_PPC64_ENTRY: |
4a421c53 | 16250 | case R_PPC64_PCREL_OPT: |
c316a17c | 16251 | goto copy_reloc; |
5bd4f169 AM |
16252 | |
16253 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
16254 | address in the GOT as relocation value instead of the | |
411e1bfb | 16255 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 16256 | symbol and put the symbol value there. */ |
411e1bfb AM |
16257 | case R_PPC64_GOT_TLSGD16: |
16258 | case R_PPC64_GOT_TLSGD16_LO: | |
16259 | case R_PPC64_GOT_TLSGD16_HI: | |
16260 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 16261 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 16262 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
16263 | goto dogot; |
16264 | ||
16265 | case R_PPC64_GOT_TLSLD16: | |
16266 | case R_PPC64_GOT_TLSLD16_LO: | |
16267 | case R_PPC64_GOT_TLSLD16_HI: | |
16268 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 16269 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 16270 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
16271 | goto dogot; |
16272 | ||
16273 | case R_PPC64_GOT_TPREL16_DS: | |
16274 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16275 | case R_PPC64_GOT_TPREL16_HI: | |
16276 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 16277 | case R_PPC64_GOT_TPREL_PCREL34: |
411e1bfb AM |
16278 | tls_type = TLS_TLS | TLS_TPREL; |
16279 | goto dogot; | |
16280 | ||
16281 | case R_PPC64_GOT_DTPREL16_DS: | |
16282 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16283 | case R_PPC64_GOT_DTPREL16_HI: | |
16284 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 16285 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
16286 | tls_type = TLS_TLS | TLS_DTPREL; |
16287 | goto dogot; | |
16288 | ||
65f38f15 AM |
16289 | case R_PPC64_GOT16: |
16290 | case R_PPC64_GOT16_LO: | |
16291 | case R_PPC64_GOT16_HI: | |
16292 | case R_PPC64_GOT16_HA: | |
16293 | case R_PPC64_GOT16_DS: | |
16294 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 16295 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 16296 | dogot: |
5bd4f169 AM |
16297 | { |
16298 | /* Relocation is to the entry for this symbol in the global | |
16299 | offset table. */ | |
e717da7e | 16300 | asection *got; |
d881513a | 16301 | bfd_vma *offp; |
5bd4f169 | 16302 | bfd_vma off; |
d881513a | 16303 | unsigned long indx = 0; |
927be08e | 16304 | struct got_entry *ent; |
65f38f15 | 16305 | |
d881513a | 16306 | if (tls_type == (TLS_TLS | TLS_LD) |
9e51d549 | 16307 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
927be08e | 16308 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 16309 | else |
5bd4f169 | 16310 | { |
d881513a AM |
16311 | if (h != NULL) |
16312 | { | |
f0158f44 AM |
16313 | if (!htab->elf.dynamic_sections_created |
16314 | || h->elf.dynindx == -1 | |
16315 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 16316 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
16317 | /* This is actually a static link, or it is a |
16318 | -Bsymbolic link and the symbol is defined | |
16319 | locally, or the symbol was forced to be local | |
16320 | because of a version file. */ | |
16321 | ; | |
16322 | else | |
16323 | { | |
039b3fef | 16324 | indx = h->elf.dynindx; |
0a1b45a2 | 16325 | unresolved_reloc = false; |
d881513a | 16326 | } |
039b3fef | 16327 | ent = h->elf.got.glist; |
d881513a | 16328 | } |
411e1bfb | 16329 | else |
5bd4f169 | 16330 | { |
d881513a AM |
16331 | if (local_got_ents == NULL) |
16332 | abort (); | |
16333 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 16334 | } |
d881513a AM |
16335 | |
16336 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 16337 | if (ent->addend == orig_rel.r_addend |
e717da7e | 16338 | && ent->owner == input_bfd |
d881513a AM |
16339 | && ent->tls_type == tls_type) |
16340 | break; | |
5bd4f169 | 16341 | } |
411e1bfb | 16342 | |
927be08e AM |
16343 | if (ent == NULL) |
16344 | abort (); | |
16345 | if (ent->is_indirect) | |
16346 | ent = ent->got.ent; | |
16347 | offp = &ent->got.offset; | |
16348 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
16349 | if (got == NULL) |
16350 | abort (); | |
16351 | ||
411e1bfb AM |
16352 | /* The offset must always be a multiple of 8. We use the |
16353 | least significant bit to record whether we have already | |
16354 | processed this entry. */ | |
d881513a | 16355 | off = *offp; |
411e1bfb AM |
16356 | if ((off & 1) != 0) |
16357 | off &= ~1; | |
5bd4f169 AM |
16358 | else |
16359 | { | |
411e1bfb AM |
16360 | /* Generate relocs for the dynamic linker, except in |
16361 | the case of TLSLD where we'll use one entry per | |
16362 | module. */ | |
25f23106 | 16363 | asection *relgot; |
0a1b45a2 | 16364 | bool ifunc; |
e717da7e | 16365 | |
d881513a | 16366 | *offp = off | 1; |
25f23106 AM |
16367 | relgot = NULL; |
16368 | ifunc = (h != NULL | |
16369 | ? h->elf.type == STT_GNU_IFUNC | |
16370 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 16371 | if (ifunc) |
82e66161 AM |
16372 | { |
16373 | relgot = htab->elf.irelplt; | |
efb2a7b4 | 16374 | if (indx == 0 || is_static_defined (&h->elf)) |
0a1b45a2 | 16375 | htab->elf.ifunc_resolvers = true; |
82e66161 | 16376 | } |
f0158f44 AM |
16377 | else if (indx != 0 |
16378 | || (bfd_link_pic (info) | |
16379 | && (h == NULL | |
f749f26e AM |
16380 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
16381 | && !(tls_type != 0 | |
f15d0b54 | 16382 | && bfd_link_executable (info) |
9e51d549 AM |
16383 | && (h == NULL |
16384 | || SYMBOL_REFERENCES_LOCAL (info, | |
16385 | &h->elf))))) | |
19e08130 | 16386 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 16387 | if (relgot != NULL) |
5bd4f169 | 16388 | { |
e717da7e AM |
16389 | outrel.r_offset = (got->output_section->vma |
16390 | + got->output_offset | |
411e1bfb | 16391 | + off); |
133a1f60 | 16392 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 16393 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 16394 | { |
411e1bfb | 16395 | outrel.r_addend = 0; |
e515b051 | 16396 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
16397 | if (tls_type == (TLS_TLS | TLS_GD)) |
16398 | { | |
e717da7e AM |
16399 | loc = relgot->contents; |
16400 | loc += (relgot->reloc_count++ | |
d881513a AM |
16401 | * sizeof (Elf64_External_Rela)); |
16402 | bfd_elf64_swap_reloca_out (output_bfd, | |
16403 | &outrel, loc); | |
e515b051 | 16404 | outrel.r_offset += 8; |
133a1f60 | 16405 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
16406 | outrel.r_info |
16407 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 16408 | } |
411e1bfb | 16409 | } |
951fd09b | 16410 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 16411 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 16412 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 16413 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
16414 | else if (indx != 0) |
16415 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
16416 | else | |
81407a69 | 16417 | { |
25f23106 AM |
16418 | if (ifunc) |
16419 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16420 | else | |
16421 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
16422 | |
16423 | /* Write the .got section contents for the sake | |
16424 | of prelink. */ | |
e717da7e | 16425 | loc = got->contents + off; |
23fbd6fa JJ |
16426 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
16427 | loc); | |
81407a69 | 16428 | } |
81407a69 AM |
16429 | |
16430 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
16431 | { |
16432 | outrel.r_addend += relocation; | |
16433 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
16434 | { |
16435 | if (htab->elf.tls_sec == NULL) | |
16436 | outrel.r_addend = 0; | |
16437 | else | |
16438 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
16439 | } | |
e515b051 | 16440 | } |
e717da7e AM |
16441 | loc = relgot->contents; |
16442 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
16443 | * sizeof (Elf64_External_Rela)); |
16444 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
16445 | } | |
16446 | ||
ad8e1ba5 | 16447 | /* Init the .got section contents here if we're not |
81407a69 | 16448 | emitting a reloc. */ |
d881513a | 16449 | else |
411e1bfb | 16450 | { |
133a1f60 | 16451 | relocation += orig_rel.r_addend; |
f0158f44 | 16452 | if (tls_type != 0) |
411e1bfb | 16453 | { |
989f9879 AM |
16454 | if (htab->elf.tls_sec == NULL) |
16455 | relocation = 0; | |
16456 | else | |
16457 | { | |
f0158f44 AM |
16458 | if (tls_type & TLS_LD) |
16459 | relocation = 0; | |
16460 | else | |
16461 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 16462 | if (tls_type & TLS_TPREL) |
989f9879 AM |
16463 | relocation += DTP_OFFSET - TP_OFFSET; |
16464 | } | |
5bd4f169 | 16465 | |
f0158f44 | 16466 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
16467 | { |
16468 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16469 | got->contents + off + 8); |
676ee2b5 | 16470 | relocation = 1; |
7b609f53 | 16471 | } |
411e1bfb AM |
16472 | } |
16473 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16474 | got->contents + off); |
5bd4f169 AM |
16475 | } |
16476 | } | |
16477 | ||
65f38f15 AM |
16478 | if (off >= (bfd_vma) -2) |
16479 | abort (); | |
16480 | ||
bf102f86 | 16481 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 16482 | addend = 0; |
c213164a | 16483 | if (!(r_type == R_PPC64_GOT_PCREL34 |
87c69f97 AM |
16484 | || r_type == R_PPC64_GOT_TLSGD_PCREL34 |
16485 | || r_type == R_PPC64_GOT_TLSLD_PCREL34 | |
16486 | || r_type == R_PPC64_GOT_TPREL_PCREL34 | |
16487 | || r_type == R_PPC64_GOT_DTPREL_PCREL34)) | |
5663e321 | 16488 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 16489 | } |
65f38f15 AM |
16490 | break; |
16491 | ||
16492 | case R_PPC64_PLT16_HA: | |
16493 | case R_PPC64_PLT16_HI: | |
16494 | case R_PPC64_PLT16_LO: | |
08be3224 | 16495 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
16496 | case R_PPC64_PLT_PCREL34: |
16497 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
16498 | case R_PPC64_PLT32: |
16499 | case R_PPC64_PLT64: | |
23cedd1d | 16500 | case R_PPC64_PLTSEQ: |
5663e321 | 16501 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 16502 | case R_PPC64_PLTCALL: |
5663e321 | 16503 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
16504 | /* Relocation is to the entry for this symbol in the |
16505 | procedure linkage table. */ | |
0a1b45a2 | 16506 | unresolved_reloc = true; |
cbf95972 AM |
16507 | { |
16508 | struct plt_entry **plt_list = NULL; | |
16509 | if (h != NULL) | |
16510 | plt_list = &h->elf.plt.plist; | |
16511 | else if (local_got_ents != NULL) | |
16512 | { | |
16513 | struct plt_entry **local_plt = (struct plt_entry **) | |
16514 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 16515 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
16516 | } |
16517 | if (plt_list) | |
16518 | { | |
16519 | struct plt_entry *ent; | |
65f38f15 | 16520 | |
cbf95972 AM |
16521 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
16522 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 16523 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
16524 | { |
16525 | asection *plt; | |
08be3224 | 16526 | bfd_vma got; |
cbf95972 AM |
16527 | |
16528 | plt = htab->elf.splt; | |
30845f11 | 16529 | if (use_local_plt (info, elf_hash_entry (h))) |
2d7ad24e AM |
16530 | { |
16531 | if (h != NULL | |
16532 | ? h->elf.type == STT_GNU_IFUNC | |
16533 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16534 | plt = htab->elf.iplt; | |
16535 | else | |
16536 | plt = htab->pltlocal; | |
16537 | } | |
16538 | relocation = (plt->output_section->vma | |
16539 | + plt->output_offset | |
16540 | + ent->plt.offset); | |
08be3224 | 16541 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
16542 | || r_type == R_PPC64_PLT16_HI |
16543 | || r_type == R_PPC64_PLT16_LO | |
16544 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
16545 | { |
16546 | got = (elf_gp (output_bfd) | |
16547 | + htab->sec_info[input_section->id].toc_off); | |
16548 | relocation -= got; | |
16549 | } | |
133a1f60 | 16550 | addend = 0; |
0a1b45a2 | 16551 | unresolved_reloc = false; |
cbf95972 AM |
16552 | break; |
16553 | } | |
16554 | } | |
16555 | } | |
65f38f15 | 16556 | break; |
5bd4f169 | 16557 | |
0b13192e AM |
16558 | case R_PPC64_TOC: |
16559 | /* Relocation value is TOC base. */ | |
16560 | relocation = TOCstart; | |
cf35638d | 16561 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 16562 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
16563 | else if (unresolved_reloc) |
16564 | ; | |
6f20ed8a AM |
16565 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
16566 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e | 16567 | else |
0a1b45a2 | 16568 | unresolved_reloc = true; |
ab96bf03 | 16569 | goto dodyn; |
0b13192e | 16570 | |
5bd4f169 AM |
16571 | /* TOC16 relocs. We want the offset relative to the TOC base, |
16572 | which is the address of the start of the TOC plus 0x8000. | |
16573 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
16574 | in this order. */ | |
65f38f15 AM |
16575 | case R_PPC64_TOC16: |
16576 | case R_PPC64_TOC16_LO: | |
16577 | case R_PPC64_TOC16_HI: | |
16578 | case R_PPC64_TOC16_DS: | |
16579 | case R_PPC64_TOC16_LO_DS: | |
16580 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 16581 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
16582 | if (h != NULL) |
16583 | goto dodyn; | |
5bd4f169 AM |
16584 | break; |
16585 | ||
16586 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
16587 | case R_PPC64_SECTOFF: |
16588 | case R_PPC64_SECTOFF_LO: | |
16589 | case R_PPC64_SECTOFF_HI: | |
16590 | case R_PPC64_SECTOFF_DS: | |
16591 | case R_PPC64_SECTOFF_LO_DS: | |
16592 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 16593 | if (sec != NULL) |
65f38f15 | 16594 | addend -= sec->output_section->vma; |
5bd4f169 AM |
16595 | break; |
16596 | ||
25f23106 AM |
16597 | case R_PPC64_REL16: |
16598 | case R_PPC64_REL16_LO: | |
16599 | case R_PPC64_REL16_HI: | |
16600 | case R_PPC64_REL16_HA: | |
4a969973 AM |
16601 | case R_PPC64_REL16_HIGH: |
16602 | case R_PPC64_REL16_HIGHA: | |
16603 | case R_PPC64_REL16_HIGHER: | |
16604 | case R_PPC64_REL16_HIGHERA: | |
16605 | case R_PPC64_REL16_HIGHEST: | |
16606 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
16607 | case R_PPC64_REL16_HIGHER34: |
16608 | case R_PPC64_REL16_HIGHERA34: | |
16609 | case R_PPC64_REL16_HIGHEST34: | |
16610 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 16611 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
16612 | case R_PPC64_REL14: |
16613 | case R_PPC64_REL14_BRNTAKEN: | |
16614 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 16615 | case R_PPC64_REL24: |
05d0e962 | 16616 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
16617 | case R_PPC64_PCREL34: |
16618 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
16619 | break; |
16620 | ||
411e1bfb AM |
16621 | case R_PPC64_TPREL16: |
16622 | case R_PPC64_TPREL16_LO: | |
16623 | case R_PPC64_TPREL16_HI: | |
16624 | case R_PPC64_TPREL16_HA: | |
16625 | case R_PPC64_TPREL16_DS: | |
16626 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
16627 | case R_PPC64_TPREL16_HIGH: |
16628 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
16629 | case R_PPC64_TPREL16_HIGHER: |
16630 | case R_PPC64_TPREL16_HIGHERA: | |
16631 | case R_PPC64_TPREL16_HIGHEST: | |
16632 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 16633 | case R_PPC64_TPREL34: |
766bc656 AM |
16634 | if (h != NULL |
16635 | && h->elf.root.type == bfd_link_hash_undefweak | |
16636 | && h->elf.dynindx == -1) | |
16637 | { | |
16638 | /* Make this relocation against an undefined weak symbol | |
16639 | resolve to zero. This is really just a tweak, since | |
16640 | code using weak externs ought to check that they are | |
16641 | defined before using them. */ | |
16642 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
16643 | ||
95f0d0d2 | 16644 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
16645 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
16646 | if (insn != 0) | |
95f0d0d2 | 16647 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
16648 | break; |
16649 | } | |
989f9879 AM |
16650 | if (htab->elf.tls_sec != NULL) |
16651 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
16652 | /* The TPREL16 relocs shouldn't really be used in shared |
16653 | libs or with non-local symbols as that will result in | |
16654 | DT_TEXTREL being set, but support them anyway. */ | |
16655 | goto dodyn; | |
411e1bfb AM |
16656 | |
16657 | case R_PPC64_DTPREL16: | |
16658 | case R_PPC64_DTPREL16_LO: | |
16659 | case R_PPC64_DTPREL16_HI: | |
16660 | case R_PPC64_DTPREL16_HA: | |
16661 | case R_PPC64_DTPREL16_DS: | |
16662 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
16663 | case R_PPC64_DTPREL16_HIGH: |
16664 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
16665 | case R_PPC64_DTPREL16_HIGHER: |
16666 | case R_PPC64_DTPREL16_HIGHERA: | |
16667 | case R_PPC64_DTPREL16_HIGHEST: | |
16668 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 16669 | case R_PPC64_DTPREL34: |
989f9879 AM |
16670 | if (htab->elf.tls_sec != NULL) |
16671 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
16672 | break; |
16673 | ||
45965137 AM |
16674 | case R_PPC64_ADDR64_LOCAL: |
16675 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
16676 | ? h->elf.other | |
16677 | : sym->st_other); | |
16678 | break; | |
16679 | ||
e515b051 AM |
16680 | case R_PPC64_DTPMOD64: |
16681 | relocation = 1; | |
16682 | addend = 0; | |
16683 | goto dodyn; | |
16684 | ||
411e1bfb | 16685 | case R_PPC64_TPREL64: |
989f9879 AM |
16686 | if (htab->elf.tls_sec != NULL) |
16687 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
16688 | goto dodyn; |
16689 | ||
16690 | case R_PPC64_DTPREL64: | |
989f9879 AM |
16691 | if (htab->elf.tls_sec != NULL) |
16692 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 16693 | /* Fall through. */ |
411e1bfb | 16694 | |
65f38f15 AM |
16695 | /* Relocations that may need to be propagated if this is a |
16696 | dynamic object. */ | |
04c9666a | 16697 | case R_PPC64_REL30: |
65f38f15 AM |
16698 | case R_PPC64_REL32: |
16699 | case R_PPC64_REL64: | |
16700 | case R_PPC64_ADDR14: | |
16701 | case R_PPC64_ADDR14_BRNTAKEN: | |
16702 | case R_PPC64_ADDR14_BRTAKEN: | |
16703 | case R_PPC64_ADDR16: | |
16704 | case R_PPC64_ADDR16_DS: | |
16705 | case R_PPC64_ADDR16_HA: | |
16706 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16707 | case R_PPC64_ADDR16_HIGH: |
16708 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16709 | case R_PPC64_ADDR16_HIGHER: |
16710 | case R_PPC64_ADDR16_HIGHERA: | |
16711 | case R_PPC64_ADDR16_HIGHEST: | |
16712 | case R_PPC64_ADDR16_HIGHESTA: | |
16713 | case R_PPC64_ADDR16_LO: | |
16714 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
16715 | case R_PPC64_ADDR16_HIGHER34: |
16716 | case R_PPC64_ADDR16_HIGHERA34: | |
16717 | case R_PPC64_ADDR16_HIGHEST34: | |
16718 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 16719 | case R_PPC64_ADDR24: |
65f38f15 AM |
16720 | case R_PPC64_ADDR32: |
16721 | case R_PPC64_ADDR64: | |
16722 | case R_PPC64_UADDR16: | |
16723 | case R_PPC64_UADDR32: | |
16724 | case R_PPC64_UADDR64: | |
5663e321 AM |
16725 | case R_PPC64_D34: |
16726 | case R_PPC64_D34_LO: | |
16727 | case R_PPC64_D34_HI30: | |
16728 | case R_PPC64_D34_HA30: | |
16729 | case R_PPC64_D28: | |
411e1bfb | 16730 | dodyn: |
5d1634d7 | 16731 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16732 | break; |
16733 | ||
41bd81ab AM |
16734 | if (NO_OPD_RELOCS && is_opd) |
16735 | break; | |
16736 | ||
8a9e8e72 | 16737 | if (bfd_link_pic (info) |
b1b07054 | 16738 | ? ((h == NULL |
190eb1dd | 16739 | || h->elf.dyn_relocs != NULL) |
b1b07054 AM |
16740 | && ((h != NULL && pc_dynrelocs (h)) |
16741 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 | 16742 | : (h != NULL |
190eb1dd | 16743 | ? h->elf.dyn_relocs != NULL |
d311bc8b | 16744 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16745 | { |
0a1b45a2 | 16746 | bool skip, relocate; |
65f38f15 | 16747 | asection *sreloc; |
1cf1f670 | 16748 | bfd_vma out_off; |
82e66161 | 16749 | long indx = 0; |
65f38f15 AM |
16750 | |
16751 | /* When generating a dynamic object, these relocations | |
16752 | are copied into the output file to be resolved at run | |
16753 | time. */ | |
16754 | ||
0a1b45a2 AM |
16755 | skip = false; |
16756 | relocate = false; | |
65f38f15 | 16757 | |
1cf1f670 AM |
16758 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16759 | input_section, rel->r_offset); | |
16760 | if (out_off == (bfd_vma) -1) | |
0a1b45a2 | 16761 | skip = true; |
1cf1f670 | 16762 | else if (out_off == (bfd_vma) -2) |
0a1b45a2 | 16763 | skip = true, relocate = true; |
1cf1f670 AM |
16764 | out_off += (input_section->output_section->vma |
16765 | + input_section->output_offset); | |
16766 | outrel.r_offset = out_off; | |
411e1bfb | 16767 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16768 | |
1cf1f670 AM |
16769 | /* Optimize unaligned reloc use. */ |
16770 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16771 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16772 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16773 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16774 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16775 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16776 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16777 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16778 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16779 | ||
65f38f15 | 16780 | if (skip) |
0bb2d96a | 16781 | memset (&outrel, 0, sizeof outrel); |
9e51d549 AM |
16782 | else if (h != NULL |
16783 | && !SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
0b13192e AM |
16784 | && !is_opd |
16785 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16786 | { |
82e66161 AM |
16787 | indx = h->elf.dynindx; |
16788 | BFD_ASSERT (indx != -1); | |
16789 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16790 | } |
65f38f15 AM |
16791 | else |
16792 | { | |
41bd81ab AM |
16793 | /* This symbol is local, or marked to become local, |
16794 | or this is an opd section reloc which must point | |
16795 | at a local function. */ | |
65f38f15 | 16796 | outrel.r_addend += relocation; |
e86ce104 | 16797 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16798 | { |
3fad3c7c | 16799 | if (is_opd && h != NULL) |
afbe61cf AM |
16800 | { |
16801 | /* Lie about opd entries. This case occurs | |
16802 | when building shared libraries and we | |
16803 | reference a function in another shared | |
3fad3c7c AM |
16804 | lib. The same thing happens for a weak |
16805 | definition in an application that's | |
16806 | overridden by a strong definition in a | |
16807 | shared lib. (I believe this is a generic | |
16808 | bug in binutils handling of weak syms.) | |
16809 | In these cases we won't use the opd | |
1e2f5b6e | 16810 | entry in this lib. */ |
0a1b45a2 | 16811 | unresolved_reloc = false; |
afbe61cf | 16812 | } |
25f23106 AM |
16813 | if (!is_opd |
16814 | && r_type == R_PPC64_ADDR64 | |
16815 | && (h != NULL | |
16816 | ? h->elf.type == STT_GNU_IFUNC | |
16817 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16818 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16819 | else | |
16820 | { | |
16821 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16822 | |
25f23106 AM |
16823 | /* We need to relocate .opd contents for ld.so. |
16824 | Prelink also wants simple and consistent rules | |
16825 | for relocs. This make all RELATIVE relocs have | |
16826 | *r_offset equal to r_addend. */ | |
0a1b45a2 | 16827 | relocate = true; |
25f23106 | 16828 | } |
65f38f15 AM |
16829 | } |
16830 | else | |
16831 | { | |
25f23106 AM |
16832 | if (h != NULL |
16833 | ? h->elf.type == STT_GNU_IFUNC | |
16834 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16835 | { | |
25f53a85 | 16836 | info->callbacks->einfo |
695344c0 | 16837 | /* xgettext:c-format */ |
174d0a74 | 16838 | (_("%H: %s for indirect " |
c1c8c1ef | 16839 | "function `%pT' unsupported\n"), |
25f53a85 | 16840 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16841 | ppc64_elf_howto_table[r_type]->name, |
16842 | sym_name); | |
0a1b45a2 | 16843 | ret = false; |
25f23106 | 16844 | } |
cf35638d | 16845 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16846 | ; |
16847 | else if (sec == NULL || sec->owner == NULL) | |
16848 | { | |
16849 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 16850 | return false; |
65f38f15 AM |
16851 | } |
16852 | else | |
16853 | { | |
f26a3287 | 16854 | asection *osec = sec->output_section; |
65f38f15 | 16855 | |
f26a3287 AM |
16856 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
16857 | { | |
16858 | /* TLS symbol values are relative to the | |
16859 | TLS segment. Dynamic relocations for | |
16860 | local TLS symbols therefore can't be | |
16861 | reduced to a relocation against their | |
16862 | section symbol because it holds the | |
16863 | address of the section, not a value | |
16864 | relative to the TLS segment. We could | |
16865 | change the .tdata dynamic section symbol | |
16866 | to be zero value but STN_UNDEF works | |
16867 | and is used elsewhere, eg. for TPREL64 | |
16868 | GOT relocs against local TLS symbols. */ | |
16869 | osec = htab->elf.tls_sec; | |
16870 | indx = 0; | |
16871 | } | |
16872 | else | |
74541ad4 | 16873 | { |
74541ad4 | 16874 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
16875 | if (indx == 0) |
16876 | { | |
16877 | if ((osec->flags & SEC_READONLY) == 0 | |
16878 | && htab->elf.data_index_section != NULL) | |
16879 | osec = htab->elf.data_index_section; | |
16880 | else | |
16881 | osec = htab->elf.text_index_section; | |
16882 | indx = elf_section_data (osec)->dynindx; | |
16883 | } | |
16884 | BFD_ASSERT (indx != 0); | |
74541ad4 | 16885 | } |
74541ad4 | 16886 | |
65f38f15 AM |
16887 | /* We are turning this relocation into one |
16888 | against a section symbol, so subtract out | |
16889 | the output section's address but not the | |
16890 | offset of the input section in the output | |
16891 | section. */ | |
16892 | outrel.r_addend -= osec->vma; | |
16893 | } | |
16894 | ||
16895 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16896 | } | |
16897 | } | |
16898 | ||
16899 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16900 | if (h != NULL |
16901 | ? h->elf.type == STT_GNU_IFUNC | |
16902 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16903 | { |
16904 | sreloc = htab->elf.irelplt; | |
efb2a7b4 | 16905 | if (indx == 0 || is_static_defined (&h->elf)) |
0a1b45a2 | 16906 | htab->elf.ifunc_resolvers = true; |
82e66161 | 16907 | } |
65f38f15 AM |
16908 | if (sreloc == NULL) |
16909 | abort (); | |
16910 | ||
dfbb6ac9 AM |
16911 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16912 | >= sreloc->size) | |
16913 | abort (); | |
947216bf AM |
16914 | loc = sreloc->contents; |
16915 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16916 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16917 | ||
e59a1001 AM |
16918 | if (!warned_dynamic |
16919 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
16920 | { | |
16921 | info->callbacks->einfo | |
16922 | /* xgettext:c-format */ | |
16923 | (_("%X%P: %pB: %s against %pT " | |
16924 | "is not supported by glibc as a dynamic relocation\n"), | |
16925 | input_bfd, | |
16926 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
16927 | sym_name); | |
0a1b45a2 | 16928 | warned_dynamic = true; |
e59a1001 AM |
16929 | } |
16930 | ||
65f38f15 AM |
16931 | /* If this reloc is against an external symbol, it will |
16932 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16933 | anything now. However, for the sake of prelink ensure |
16934 | that the section contents are a known value. */ | |
2cdcc330 | 16935 | if (!relocate) |
81407a69 | 16936 | { |
0a1b45a2 | 16937 | unresolved_reloc = false; |
81407a69 AM |
16938 | /* The value chosen here is quite arbitrary as ld.so |
16939 | ignores section contents except for the special | |
16940 | case of .opd where the contents might be accessed | |
16941 | before relocation. Choose zero, as that won't | |
16942 | cause reloc overflow. */ | |
16943 | relocation = 0; | |
16944 | addend = 0; | |
16945 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16946 | to improve backward compatibility with older | |
16947 | versions of ld. */ | |
16948 | if (r_type == R_PPC64_ADDR64) | |
16949 | addend = outrel.r_addend; | |
16950 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16951 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16952 | addend = outrel.r_offset; |
81407a69 | 16953 | } |
65f38f15 | 16954 | } |
5bd4f169 AM |
16955 | break; |
16956 | ||
65f38f15 AM |
16957 | case R_PPC64_COPY: |
16958 | case R_PPC64_GLOB_DAT: | |
16959 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16960 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16961 | case R_PPC64_RELATIVE: |
16962 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16963 | files. */ | |
ae9a127f | 16964 | /* Fall through. */ |
65f38f15 AM |
16965 | |
16966 | case R_PPC64_PLTGOT16: | |
16967 | case R_PPC64_PLTGOT16_DS: | |
16968 | case R_PPC64_PLTGOT16_HA: | |
16969 | case R_PPC64_PLTGOT16_HI: | |
16970 | case R_PPC64_PLTGOT16_LO: | |
16971 | case R_PPC64_PLTGOT16_LO_DS: | |
16972 | case R_PPC64_PLTREL32: | |
16973 | case R_PPC64_PLTREL64: | |
16974 | /* These ones haven't been implemented yet. */ | |
16975 | ||
25f53a85 | 16976 | info->callbacks->einfo |
695344c0 | 16977 | /* xgettext:c-format */ |
c1c8c1ef | 16978 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16979 | input_bfd, |
4ce794b7 | 16980 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16981 | |
16982 | bfd_set_error (bfd_error_invalid_operation); | |
0a1b45a2 | 16983 | ret = false; |
c316a17c | 16984 | goto copy_reloc; |
65f38f15 | 16985 | } |
5bd4f169 | 16986 | |
67f0cbdb AM |
16987 | /* Multi-instruction sequences that access the TOC can be |
16988 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16989 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16990 | switch (r_type) |
16991 | { | |
16992 | default: | |
16993 | break; | |
16994 | ||
16995 | case R_PPC64_GOT_TLSLD16_HI: | |
16996 | case R_PPC64_GOT_TLSGD16_HI: | |
16997 | case R_PPC64_GOT_TPREL16_HI: | |
16998 | case R_PPC64_GOT_DTPREL16_HI: | |
16999 | case R_PPC64_GOT16_HI: | |
17000 | case R_PPC64_TOC16_HI: | |
17001 | /* These relocs would only be useful if building up an | |
17002 | offset to later add to r2, perhaps in an indexed | |
17003 | addressing mode instruction. Don't try to optimize. | |
17004 | Unfortunately, the possibility of someone building up an | |
17005 | offset like this or even with the HA relocs, means that | |
17006 | we need to check the high insn when optimizing the low | |
17007 | insn. */ | |
17008 | break; | |
17009 | ||
5663e321 AM |
17010 | case R_PPC64_PLTCALL_NOTOC: |
17011 | if (!unresolved_reloc) | |
17012 | htab->notoc_plt = 1; | |
17013 | /* Fall through. */ | |
23cedd1d AM |
17014 | case R_PPC64_PLTCALL: |
17015 | if (unresolved_reloc) | |
17016 | { | |
17017 | /* No plt entry. Make this into a direct call. */ | |
17018 | bfd_byte *p = contents + rel->r_offset; | |
17019 | insn = bfd_get_32 (input_bfd, p); | |
17020 | insn &= 1; | |
17021 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
17022 | if (r_type == R_PPC64_PLTCALL) |
17023 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
17024 | unresolved_reloc = save_unresolved_reloc; |
17025 | r_type = R_PPC64_REL24; | |
17026 | } | |
17027 | break; | |
17028 | ||
5663e321 | 17029 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
17030 | case R_PPC64_PLTSEQ: |
17031 | if (unresolved_reloc) | |
17032 | { | |
0a1b45a2 | 17033 | unresolved_reloc = false; |
23cedd1d AM |
17034 | goto nop_it; |
17035 | } | |
17036 | break; | |
17037 | ||
5663e321 AM |
17038 | case R_PPC64_PLT_PCREL34_NOTOC: |
17039 | if (!unresolved_reloc) | |
17040 | htab->notoc_plt = 1; | |
17041 | /* Fall through. */ | |
17042 | case R_PPC64_PLT_PCREL34: | |
17043 | if (unresolved_reloc) | |
17044 | { | |
17045 | bfd_byte *p = contents + rel->r_offset; | |
17046 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
17047 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
0a1b45a2 | 17048 | unresolved_reloc = false; |
5663e321 AM |
17049 | goto copy_reloc; |
17050 | } | |
17051 | break; | |
17052 | ||
23cedd1d AM |
17053 | case R_PPC64_PLT16_HA: |
17054 | if (unresolved_reloc) | |
17055 | { | |
0a1b45a2 | 17056 | unresolved_reloc = false; |
23cedd1d AM |
17057 | goto nop_it; |
17058 | } | |
17059 | /* Fall through. */ | |
67f0cbdb AM |
17060 | case R_PPC64_GOT_TLSLD16_HA: |
17061 | case R_PPC64_GOT_TLSGD16_HA: | |
17062 | case R_PPC64_GOT_TPREL16_HA: | |
17063 | case R_PPC64_GOT_DTPREL16_HA: | |
17064 | case R_PPC64_GOT16_HA: | |
17065 | case R_PPC64_TOC16_HA: | |
98528052 | 17066 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 17067 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 17068 | { |
23cedd1d AM |
17069 | bfd_byte *p; |
17070 | nop_it: | |
17071 | p = contents + (rel->r_offset & ~3); | |
98528052 | 17072 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 17073 | goto copy_reloc; |
98528052 | 17074 | } |
67f0cbdb AM |
17075 | break; |
17076 | ||
23cedd1d AM |
17077 | case R_PPC64_PLT16_LO: |
17078 | case R_PPC64_PLT16_LO_DS: | |
17079 | if (unresolved_reloc) | |
17080 | { | |
0a1b45a2 | 17081 | unresolved_reloc = false; |
23cedd1d AM |
17082 | goto nop_it; |
17083 | } | |
17084 | /* Fall through. */ | |
67f0cbdb AM |
17085 | case R_PPC64_GOT_TLSLD16_LO: |
17086 | case R_PPC64_GOT_TLSGD16_LO: | |
17087 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17088 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17089 | case R_PPC64_GOT16_LO: | |
17090 | case R_PPC64_GOT16_LO_DS: | |
17091 | case R_PPC64_TOC16_LO: | |
17092 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 17093 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 17094 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
17095 | { |
17096 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17097 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 17098 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
17099 | { |
17100 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 17101 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
17102 | insn |= (14u << 26) | (2 << 16); |
17103 | } | |
17104 | else | |
67f0cbdb | 17105 | { |
98528052 AM |
17106 | insn &= ~(0x1f << 16); |
17107 | insn |= 2 << 16; | |
67f0cbdb | 17108 | } |
560c8763 | 17109 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
17110 | } |
17111 | break; | |
9a23f96e AM |
17112 | |
17113 | case R_PPC64_TPREL16_HA: | |
17114 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
17115 | { | |
17116 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
252dcdf4 AM |
17117 | bfd_put_32 (input_bfd, NOP, p); |
17118 | goto copy_reloc; | |
9a23f96e AM |
17119 | } |
17120 | break; | |
17121 | ||
17122 | case R_PPC64_TPREL16_LO: | |
17123 | case R_PPC64_TPREL16_LO_DS: | |
17124 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
17125 | { | |
17126 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17127 | insn = bfd_get_32 (input_bfd, p); | |
17128 | insn &= ~(0x1f << 16); | |
17129 | insn |= 13 << 16; | |
17130 | bfd_put_32 (input_bfd, insn, p); | |
17131 | } | |
17132 | break; | |
67f0cbdb AM |
17133 | } |
17134 | ||
65f38f15 AM |
17135 | /* Do any further special processing. */ |
17136 | switch (r_type) | |
17137 | { | |
17138 | default: | |
17139 | break; | |
17140 | ||
25f23106 | 17141 | case R_PPC64_REL16_HA: |
4a969973 AM |
17142 | case R_PPC64_REL16_HIGHA: |
17143 | case R_PPC64_REL16_HIGHERA: | |
17144 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 17145 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
17146 | case R_PPC64_ADDR16_HA: |
17147 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
17148 | case R_PPC64_ADDR16_HIGHERA: |
17149 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
17150 | case R_PPC64_TOC16_HA: |
17151 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 17152 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 17153 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 17154 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 17155 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
17156 | case R_PPC64_DTPREL16_HA: |
17157 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 17158 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 17159 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
17160 | /* It's just possible that this symbol is a weak symbol |
17161 | that's not actually defined anywhere. In that case, | |
17162 | 'sec' would be NULL, and we should leave the symbol | |
17163 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
17164 | if (sec == NULL) |
17165 | break; | |
1a0670f3 | 17166 | /* Fall through. */ |
5c5f6e17 AM |
17167 | |
17168 | case R_PPC64_GOT16_HA: | |
17169 | case R_PPC64_PLTGOT16_HA: | |
17170 | case R_PPC64_PLT16_HA: | |
17171 | case R_PPC64_GOT_TLSGD16_HA: | |
17172 | case R_PPC64_GOT_TLSLD16_HA: | |
17173 | case R_PPC64_GOT_TPREL16_HA: | |
17174 | case R_PPC64_GOT_DTPREL16_HA: | |
17175 | /* Add 0x10000 if sign bit in 0:15 is set. | |
17176 | Bits 0:15 are not used. */ | |
17177 | addend += 0x8000; | |
65f38f15 AM |
17178 | break; |
17179 | ||
5663e321 AM |
17180 | case R_PPC64_D34_HA30: |
17181 | case R_PPC64_ADDR16_HIGHERA34: | |
17182 | case R_PPC64_ADDR16_HIGHESTA34: | |
17183 | case R_PPC64_REL16_HIGHERA34: | |
17184 | case R_PPC64_REL16_HIGHESTA34: | |
17185 | if (sec != NULL) | |
17186 | addend += 1ULL << 33; | |
17187 | break; | |
17188 | ||
65f38f15 AM |
17189 | case R_PPC64_ADDR16_DS: |
17190 | case R_PPC64_ADDR16_LO_DS: | |
17191 | case R_PPC64_GOT16_DS: | |
17192 | case R_PPC64_GOT16_LO_DS: | |
17193 | case R_PPC64_PLT16_LO_DS: | |
17194 | case R_PPC64_SECTOFF_DS: | |
17195 | case R_PPC64_SECTOFF_LO_DS: | |
17196 | case R_PPC64_TOC16_DS: | |
17197 | case R_PPC64_TOC16_LO_DS: | |
17198 | case R_PPC64_PLTGOT16_DS: | |
17199 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
17200 | case R_PPC64_GOT_TPREL16_DS: |
17201 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17202 | case R_PPC64_GOT_DTPREL16_DS: | |
17203 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17204 | case R_PPC64_TPREL16_DS: | |
17205 | case R_PPC64_TPREL16_LO_DS: | |
17206 | case R_PPC64_DTPREL16_DS: | |
17207 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
17208 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
17209 | mask = 3; | |
a680de9a PB |
17210 | /* If this reloc is against an lq, lxv, or stxv insn, then |
17211 | the value must be a multiple of 16. This is somewhat of | |
17212 | a hack, but the "correct" way to do this by defining _DQ | |
17213 | forms of all the _DS relocs bloats all reloc switches in | |
17214 | this file. It doesn't make much sense to use these | |
17215 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
17216 | if ((insn & (0x3fu << 26)) == (56u << 26) |
17217 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 17218 | mask = 15; |
a680de9a PB |
17219 | relocation += addend; |
17220 | addend = insn & (mask ^ 3); | |
17221 | if ((relocation & mask) != 0) | |
65f38f15 | 17222 | { |
a680de9a | 17223 | relocation ^= relocation & mask; |
25f53a85 | 17224 | info->callbacks->einfo |
695344c0 | 17225 | /* xgettext:c-format */ |
174d0a74 | 17226 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 17227 | input_bfd, input_section, rel->r_offset, |
d830549d | 17228 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 17229 | mask + 1); |
65f38f15 | 17230 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 17231 | ret = false; |
c316a17c | 17232 | goto copy_reloc; |
65f38f15 AM |
17233 | } |
17234 | break; | |
5bd4f169 AM |
17235 | } |
17236 | ||
239e1f3a AM |
17237 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
17238 | because such sections are not SEC_ALLOC and thus ld.so will | |
17239 | not process them. */ | |
d830549d | 17240 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 17241 | if (unresolved_reloc |
239e1f3a | 17242 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
17243 | && h->elf.def_dynamic) |
17244 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
17245 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 17246 | { |
25f53a85 | 17247 | info->callbacks->einfo |
695344c0 | 17248 | /* xgettext:c-format */ |
c1c8c1ef | 17249 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 17250 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 17251 | howto->name, |
039b3fef | 17252 | h->elf.root.root.string); |
0a1b45a2 | 17253 | ret = false; |
9c07fe7c | 17254 | } |
5bd4f169 | 17255 | |
b80eed39 AM |
17256 | /* 16-bit fields in insns mostly have signed values, but a |
17257 | few insns have 16-bit unsigned values. Really, we should | |
17258 | have different reloc types. */ | |
17259 | if (howto->complain_on_overflow != complain_overflow_dont | |
17260 | && howto->dst_mask == 0xffff | |
17261 | && (input_section->flags & SEC_CODE) != 0) | |
17262 | { | |
17263 | enum complain_overflow complain = complain_overflow_signed; | |
17264 | ||
17265 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 17266 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
17267 | complain = complain_overflow_bitfield; |
17268 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
17269 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
17270 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
17271 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
17272 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
17273 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
17274 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
17275 | complain = complain_overflow_unsigned; |
17276 | if (howto->complain_on_overflow != complain) | |
17277 | { | |
17278 | alt_howto = *howto; | |
17279 | alt_howto.complain_on_overflow = complain; | |
17280 | howto = &alt_howto; | |
17281 | } | |
17282 | } | |
17283 | ||
5663e321 | 17284 | switch (r_type) |
a680de9a | 17285 | { |
5663e321 AM |
17286 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
17287 | case R_PPC64_D34: | |
17288 | case R_PPC64_D34_LO: | |
17289 | case R_PPC64_D34_HI30: | |
17290 | case R_PPC64_D34_HA30: | |
17291 | case R_PPC64_PCREL34: | |
17292 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
17293 | case R_PPC64_TPREL34: |
17294 | case R_PPC64_DTPREL34: | |
87c69f97 AM |
17295 | case R_PPC64_GOT_TLSGD_PCREL34: |
17296 | case R_PPC64_GOT_TLSLD_PCREL34: | |
17297 | case R_PPC64_GOT_TPREL_PCREL34: | |
17298 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
17299 | case R_PPC64_PLT_PCREL34: |
17300 | case R_PPC64_PLT_PCREL34_NOTOC: | |
17301 | case R_PPC64_D28: | |
17302 | case R_PPC64_PCREL28: | |
17303 | if (rel->r_offset + 8 > input_section->size) | |
17304 | r = bfd_reloc_outofrange; | |
17305 | else | |
17306 | { | |
5663e321 AM |
17307 | relocation += addend; |
17308 | if (howto->pc_relative) | |
17309 | relocation -= (rel->r_offset | |
17310 | + input_section->output_offset | |
17311 | + input_section->output_section->vma); | |
17312 | relocation >>= howto->rightshift; | |
17313 | ||
17314 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
17315 | pinsn <<= 32; | |
17316 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
17317 | ||
17318 | pinsn &= ~howto->dst_mask; | |
17319 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
17320 | & howto->dst_mask); | |
17321 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
17322 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
17323 | r = bfd_reloc_ok; | |
17324 | if (howto->complain_on_overflow == complain_overflow_signed | |
17325 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
17326 | >= 1ULL << howto->bitsize)) | |
17327 | r = bfd_reloc_overflow; | |
17328 | } | |
17329 | break; | |
17330 | ||
17331 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
17332 | if (rel->r_offset + 4 > input_section->size) |
17333 | r = bfd_reloc_outofrange; | |
17334 | else | |
17335 | { | |
17336 | relocation += addend; | |
17337 | relocation -= (rel->r_offset | |
17338 | + input_section->output_offset | |
17339 | + input_section->output_section->vma); | |
3de43e7b | 17340 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
17341 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
17342 | insn &= ~0x1fffc1; | |
3de43e7b | 17343 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
17344 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
17345 | r = bfd_reloc_ok; | |
3de43e7b | 17346 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
17347 | r = bfd_reloc_overflow; |
17348 | } | |
5663e321 AM |
17349 | break; |
17350 | ||
17351 | default: | |
17352 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
17353 | contents, rel->r_offset, | |
17354 | relocation, addend); | |
a680de9a | 17355 | } |
5bd4f169 | 17356 | |
ef60b7ff | 17357 | if (r != bfd_reloc_ok) |
5bd4f169 | 17358 | { |
bc30df16 | 17359 | char *more_info = NULL; |
b80eed39 | 17360 | const char *reloc_name = howto->name; |
bc30df16 AM |
17361 | |
17362 | if (reloc_dest != DEST_NORMAL) | |
17363 | { | |
17364 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
17365 | if (more_info != NULL) | |
17366 | { | |
17367 | strcpy (more_info, reloc_name); | |
17368 | strcat (more_info, (reloc_dest == DEST_OPD | |
17369 | ? " (OPD)" : " (stub)")); | |
17370 | reloc_name = more_info; | |
17371 | } | |
17372 | } | |
17373 | ||
cd27b276 | 17374 | if (r == bfd_reloc_overflow) |
5bd4f169 | 17375 | { |
8131c122 AM |
17376 | /* On code like "if (foo) foo();" don't report overflow |
17377 | on a branch to zero when foo is undefined. */ | |
17378 | if (!warned | |
17379 | && (reloc_dest == DEST_STUB | |
17380 | || !(h != NULL | |
17381 | && (h->elf.root.type == bfd_link_hash_undefweak | |
17382 | || h->elf.root.type == bfd_link_hash_undefined) | |
17383 | && is_branch_reloc (r_type)))) | |
9e51d549 AM |
17384 | info->callbacks->reloc_overflow |
17385 | (info, (struct bfd_link_hash_entry *) h, sym_name, | |
17386 | reloc_name, orig_rel.r_addend, input_bfd, input_section, | |
17387 | rel->r_offset); | |
ef60b7ff AM |
17388 | } |
17389 | else | |
17390 | { | |
25f53a85 | 17391 | info->callbacks->einfo |
695344c0 | 17392 | /* xgettext:c-format */ |
c1c8c1ef | 17393 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 17394 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 17395 | reloc_name, sym_name, (int) r); |
0a1b45a2 | 17396 | ret = false; |
ef60b7ff | 17397 | } |
c9594989 | 17398 | free (more_info); |
5bd4f169 | 17399 | } |
c316a17c AM |
17400 | copy_reloc: |
17401 | if (wrel != rel) | |
17402 | *wrel = *rel; | |
17403 | } | |
17404 | ||
17405 | if (wrel != rel) | |
17406 | { | |
17407 | Elf_Internal_Shdr *rel_hdr; | |
17408 | size_t deleted = rel - wrel; | |
17409 | ||
17410 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
17411 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17412 | if (rel_hdr->sh_size == 0) | |
17413 | { | |
17414 | /* It is too late to remove an empty reloc section. Leave | |
17415 | one NONE reloc. | |
17416 | ??? What is wrong with an empty section??? */ | |
17417 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
17418 | deleted -= 1; | |
17419 | } | |
17420 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
17421 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17422 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
17423 | } |
17424 | ||
645ea6a9 AM |
17425 | /* If we're emitting relocations, then shortly after this function |
17426 | returns, reloc offsets and addends for this section will be | |
17427 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
17428 | file rather than the input. Save a copy of the relocs for |
17429 | opd_entry_value. */ | |
0e1862bb | 17430 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
17431 | { |
17432 | bfd_size_type amt; | |
17433 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
17434 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
17435 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
17436 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f | 17437 | if (rel == NULL) |
0a1b45a2 | 17438 | return false; |
8860955f AM |
17439 | memcpy (rel, relocs, amt); |
17440 | } | |
5bd4f169 AM |
17441 | return ret; |
17442 | } | |
17443 | ||
754021d0 AM |
17444 | /* Adjust the value of any local symbols in opd sections. */ |
17445 | ||
6e0b88f1 | 17446 | static int |
754021d0 AM |
17447 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
17448 | const char *name ATTRIBUTE_UNUSED, | |
17449 | Elf_Internal_Sym *elfsym, | |
17450 | asection *input_sec, | |
17451 | struct elf_link_hash_entry *h) | |
17452 | { | |
74f0fb50 AM |
17453 | struct _opd_sec_data *opd; |
17454 | long adjust; | |
754021d0 AM |
17455 | bfd_vma value; |
17456 | ||
4025353c | 17457 | if (h != NULL) |
6e0b88f1 | 17458 | return 1; |
4025353c | 17459 | |
74f0fb50 AM |
17460 | opd = get_opd_info (input_sec); |
17461 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 17462 | return 1; |
754021d0 AM |
17463 | |
17464 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 17465 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
17466 | value -= input_sec->output_section->vma; |
17467 | ||
51aecdc5 | 17468 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 17469 | if (adjust == -1) |
6e0b88f1 AM |
17470 | return 2; |
17471 | ||
17472 | elfsym->st_value += adjust; | |
17473 | return 1; | |
754021d0 AM |
17474 | } |
17475 | ||
5bd4f169 AM |
17476 | /* Finish up dynamic symbol handling. We set the contents of various |
17477 | dynamic sections here. */ | |
17478 | ||
0a1b45a2 | 17479 | static bool |
4ce794b7 AM |
17480 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
17481 | struct bfd_link_info *info, | |
17482 | struct elf_link_hash_entry *h, | |
4aef7643 | 17483 | Elf_Internal_Sym *sym) |
5bd4f169 | 17484 | { |
65f38f15 | 17485 | struct ppc_link_hash_table *htab; |
8387904d | 17486 | struct plt_entry *ent; |
5bd4f169 | 17487 | |
65f38f15 | 17488 | htab = ppc_hash_table (info); |
4dfe6ac6 | 17489 | if (htab == NULL) |
0a1b45a2 | 17490 | return false; |
5bd4f169 | 17491 | |
49c09209 AM |
17492 | if (!htab->opd_abi && !h->def_regular) |
17493 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
17494 | if (ent->plt.offset != (bfd_vma) -1) | |
17495 | { | |
17496 | /* Mark the symbol as undefined, rather than as | |
17497 | defined in glink. Leave the value if there were | |
17498 | any relocations where pointer equality matters | |
17499 | (this is a clue for the dynamic linker, to make | |
17500 | function pointer comparisons work between an | |
17501 | application and shared library), otherwise set it | |
17502 | to zero. */ | |
17503 | sym->st_shndx = SHN_UNDEF; | |
17504 | if (!h->pointer_equality_needed) | |
17505 | sym->st_value = 0; | |
17506 | else if (!h->ref_regular_nonweak) | |
17507 | { | |
17508 | /* This breaks function pointer comparisons, but | |
17509 | that is better than breaking tests for a NULL | |
17510 | function pointer. */ | |
17511 | sym->st_value = 0; | |
17512 | } | |
17513 | break; | |
17514 | } | |
5bd4f169 | 17515 | |
1bdd8fac AM |
17516 | if (h->needs_copy |
17517 | && (h->root.type == bfd_link_hash_defined | |
17518 | || h->root.type == bfd_link_hash_defweak) | |
17519 | && (h->root.u.def.section == htab->elf.sdynbss | |
17520 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 17521 | { |
65f38f15 | 17522 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 17523 | Elf_Internal_Rela rela; |
5474d94f | 17524 | asection *srel; |
49c09209 | 17525 | bfd_byte *loc; |
5bd4f169 | 17526 | |
1bdd8fac | 17527 | if (h->dynindx == -1) |
65f38f15 | 17528 | abort (); |
5bd4f169 | 17529 | |
ed7007c1 | 17530 | rela.r_offset = defined_sym_val (h); |
5bd4f169 AM |
17531 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); |
17532 | rela.r_addend = 0; | |
afbf7e8e | 17533 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
17534 | srel = htab->elf.sreldynrelro; |
17535 | else | |
17536 | srel = htab->elf.srelbss; | |
17537 | loc = srel->contents; | |
17538 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 17539 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
17540 | } |
17541 | ||
0a1b45a2 | 17542 | return true; |
5bd4f169 AM |
17543 | } |
17544 | ||
65f38f15 AM |
17545 | /* Used to decide how to sort relocs in an optimal manner for the |
17546 | dynamic linker, before writing them out. */ | |
17547 | ||
17548 | static enum elf_reloc_type_class | |
7e612e98 AM |
17549 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
17550 | const asection *rel_sec, | |
17551 | const Elf_Internal_Rela *rela) | |
65f38f15 | 17552 | { |
04c9666a | 17553 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
17554 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
17555 | ||
33e44f2e | 17556 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 17557 | return reloc_class_ifunc; |
a33d1f77 | 17558 | |
4ce794b7 | 17559 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 17560 | switch (r_type) |
65f38f15 AM |
17561 | { |
17562 | case R_PPC64_RELATIVE: | |
17563 | return reloc_class_relative; | |
17564 | case R_PPC64_JMP_SLOT: | |
17565 | return reloc_class_plt; | |
17566 | case R_PPC64_COPY: | |
17567 | return reloc_class_copy; | |
17568 | default: | |
17569 | return reloc_class_normal; | |
17570 | } | |
17571 | } | |
17572 | ||
5bd4f169 AM |
17573 | /* Finish up the dynamic sections. */ |
17574 | ||
0a1b45a2 | 17575 | static bool |
4ce794b7 AM |
17576 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
17577 | struct bfd_link_info *info) | |
5bd4f169 | 17578 | { |
65f38f15 AM |
17579 | struct ppc_link_hash_table *htab; |
17580 | bfd *dynobj; | |
5bd4f169 | 17581 | asection *sdyn; |
5bd4f169 | 17582 | |
65f38f15 | 17583 | htab = ppc_hash_table (info); |
4dfe6ac6 | 17584 | if (htab == NULL) |
0a1b45a2 | 17585 | return false; |
4dfe6ac6 | 17586 | |
65f38f15 | 17587 | dynobj = htab->elf.dynobj; |
3d4d4302 | 17588 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 17589 | |
65f38f15 | 17590 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 17591 | { |
5bd4f169 AM |
17592 | Elf64_External_Dyn *dyncon, *dynconend; |
17593 | ||
33e44f2e | 17594 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 17595 | abort (); |
5bd4f169 AM |
17596 | |
17597 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 17598 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
17599 | for (; dyncon < dynconend; dyncon++) |
17600 | { | |
17601 | Elf_Internal_Dyn dyn; | |
19397422 | 17602 | asection *s; |
5bd4f169 AM |
17603 | |
17604 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
17605 | ||
17606 | switch (dyn.d_tag) | |
17607 | { | |
65f38f15 AM |
17608 | default: |
17609 | continue; | |
5bd4f169 | 17610 | |
5d1634d7 | 17611 | case DT_PPC64_GLINK: |
4ce794b7 | 17612 | s = htab->glink; |
6348e046 | 17613 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
17614 | /* We stupidly defined DT_PPC64_GLINK to be the start |
17615 | of glink rather than the first entry point, which is | |
17616 | what ld.so needs, and now have a bigger stub to | |
17617 | support automatic multiple TOCs. */ | |
9e390558 | 17618 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
17619 | break; |
17620 | ||
19397422 AM |
17621 | case DT_PPC64_OPD: |
17622 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17623 | if (s == NULL) |
17624 | continue; | |
17625 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
17626 | break; |
17627 | ||
e8910a83 | 17628 | case DT_PPC64_OPT: |
5663e321 AM |
17629 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
17630 | || htab->notoc_plt) | |
e8910a83 | 17631 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
17632 | if (htab->has_plt_localentry0) |
17633 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
17634 | break; |
17635 | ||
19397422 AM |
17636 | case DT_PPC64_OPDSZ: |
17637 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17638 | if (s == NULL) |
17639 | continue; | |
eea6121a | 17640 | dyn.d_un.d_val = s->size; |
19397422 AM |
17641 | break; |
17642 | ||
65f38f15 | 17643 | case DT_PLTGOT: |
33e44f2e | 17644 | s = htab->elf.splt; |
6348e046 | 17645 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
17646 | break; |
17647 | ||
17648 | case DT_JMPREL: | |
33e44f2e | 17649 | s = htab->elf.srelplt; |
6348e046 | 17650 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 17651 | break; |
5bd4f169 | 17652 | |
65f38f15 | 17653 | case DT_PLTRELSZ: |
33e44f2e | 17654 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 17655 | break; |
82e66161 AM |
17656 | |
17657 | case DT_TEXTREL: | |
cebd6b8a | 17658 | if (htab->elf.ifunc_resolvers) |
82e66161 AM |
17659 | info->callbacks->einfo |
17660 | (_("%P: warning: text relocations and GNU indirect " | |
17661 | "functions may result in a segfault at runtime\n")); | |
17662 | continue; | |
5bd4f169 | 17663 | } |
5bd4f169 | 17664 | |
65f38f15 | 17665 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 17666 | } |
5bd4f169 AM |
17667 | } |
17668 | ||
6528b6eb AM |
17669 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
17670 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17671 | { |
17672 | /* Fill in the first entry in the global offset table. | |
17673 | We use it to hold the link-time TOCbase. */ | |
17674 | bfd_put_64 (output_bfd, | |
60ee0d4a | 17675 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 17676 | htab->elf.sgot->contents); |
5d1634d7 AM |
17677 | |
17678 | /* Set .got entry size. */ | |
2cdcc330 AM |
17679 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
17680 | = 8; | |
5d1634d7 AM |
17681 | } |
17682 | ||
6528b6eb AM |
17683 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
17684 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17685 | { |
17686 | /* Set .plt entry size. */ | |
33e44f2e | 17687 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 17688 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
17689 | } |
17690 | ||
84f5d08e AM |
17691 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
17692 | brlt ourselves if emitrelocations. */ | |
17693 | if (htab->brlt != NULL | |
17694 | && htab->brlt->reloc_count != 0 | |
17695 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17696 | htab->brlt, | |
d4730f92 | 17697 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
17698 | elf_section_data (htab->brlt)->relocs, |
17699 | NULL)) | |
0a1b45a2 | 17700 | return false; |
84f5d08e | 17701 | |
176a0d42 AM |
17702 | if (htab->glink != NULL |
17703 | && htab->glink->reloc_count != 0 | |
17704 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17705 | htab->glink, | |
d4730f92 | 17706 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
17707 | elf_section_data (htab->glink)->relocs, |
17708 | NULL)) | |
0a1b45a2 | 17709 | return false; |
176a0d42 | 17710 | |
da44f4e5 | 17711 | |
df136d64 AM |
17712 | if (htab->glink_eh_frame != NULL |
17713 | && htab->glink_eh_frame->size != 0 | |
17714 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
17715 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
17716 | htab->glink_eh_frame, | |
17717 | htab->glink_eh_frame->contents)) | |
0a1b45a2 | 17718 | return false; |
58d180e8 | 17719 | |
e717da7e | 17720 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
17721 | since we didn't add them to DYNOBJ. We know dynobj is the first |
17722 | bfd. */ | |
c72f2fb2 | 17723 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
17724 | { |
17725 | asection *s; | |
7b53ace3 | 17726 | |
0c8d6e5c | 17727 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
17728 | continue; |
17729 | ||
e717da7e AM |
17730 | s = ppc64_elf_tdata (dynobj)->got; |
17731 | if (s != NULL | |
eea6121a | 17732 | && s->size != 0 |
e717da7e AM |
17733 | && s->output_section != bfd_abs_section_ptr |
17734 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17735 | s->contents, s->output_offset, | |
eea6121a | 17736 | s->size)) |
0a1b45a2 | 17737 | return false; |
e717da7e AM |
17738 | s = ppc64_elf_tdata (dynobj)->relgot; |
17739 | if (s != NULL | |
eea6121a | 17740 | && s->size != 0 |
e717da7e AM |
17741 | && s->output_section != bfd_abs_section_ptr |
17742 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17743 | s->contents, s->output_offset, | |
eea6121a | 17744 | s->size)) |
0a1b45a2 | 17745 | return false; |
e717da7e | 17746 | } |
f6c52c13 | 17747 | |
0a1b45a2 | 17748 | return true; |
5bd4f169 AM |
17749 | } |
17750 | ||
5bd4f169 | 17751 | #include "elf64-target.h" |
7b8e7dad AM |
17752 | |
17753 | /* FreeBSD support */ | |
17754 | ||
17755 | #undef TARGET_LITTLE_SYM | |
6afcdeb3 | 17756 | #define TARGET_LITTLE_SYM powerpc_elf64_fbsd_le_vec |
7b8e7dad | 17757 | #undef TARGET_LITTLE_NAME |
6afcdeb3 | 17758 | #define TARGET_LITTLE_NAME "elf64-powerpcle-freebsd" |
7b8e7dad AM |
17759 | |
17760 | #undef TARGET_BIG_SYM | |
6d00b590 | 17761 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
17762 | #undef TARGET_BIG_NAME |
17763 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
17764 | ||
17765 | #undef ELF_OSABI | |
17766 | #define ELF_OSABI ELFOSABI_FREEBSD | |
17767 | ||
17768 | #undef elf64_bed | |
17769 | #define elf64_bed elf64_powerpc_fbsd_bed | |
17770 | ||
17771 | #include "elf64-target.h" |