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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
219d1afa | 2 | Copyright (C) 1999-2018 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 5 | Largely rewritten by Alan Modra. |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 22 | |
cd123cb7 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 27 | |
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
5bd4f169 | 30 | #include "bfd.h" |
5bd4f169 AM |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
04c9666a | 34 | #include "elf/ppc64.h" |
5d1634d7 | 35 | #include "elf64-ppc.h" |
58d180e8 | 36 | #include "dwarf2.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 56 | static bfd_vma opd_entry_value |
aef36ac1 | 57 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 58 | |
6d00b590 | 59 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 61 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
62 | #define TARGET_BIG_NAME "elf64-powerpc" |
63 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 64 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
65 | #define ELF_MACHINE_CODE EM_PPC64 |
66 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
67 | #define ELF_COMMONPAGESIZE 0x1000 |
68 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
70 | ||
71 | #define elf_backend_want_got_sym 0 | |
72 | #define elf_backend_want_plt_sym 0 | |
73 | #define elf_backend_plt_alignment 3 | |
74 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
5474d94f | 76 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
77 | #define elf_backend_can_gc_sections 1 |
78 | #define elf_backend_can_refcount 1 | |
79 | #define elf_backend_rela_normal 1 | |
64f52338 | 80 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 81 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 82 | |
e717da7e | 83 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 84 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 85 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
86 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
87 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
88 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
89 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 90 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 91 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 92 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
93 | |
94 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
95 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
96 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 97 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 98 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 99 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 100 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 101 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 102 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 103 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 104 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 105 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 106 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 107 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 108 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
109 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
110 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 111 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
112 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
113 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 114 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 115 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 116 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
117 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
118 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
119 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
120 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 121 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 122 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 123 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 124 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 125 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 126 | |
5bd4f169 AM |
127 | /* The name of the dynamic interpreter. This is put in the .interp |
128 | section. */ | |
129 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
130 | ||
131 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 132 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 133 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
134 | |
135 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 136 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 137 | |
a078d95a AM |
138 | /* Offsets to some stack save slots. */ |
139 | #define STK_LR 16 | |
140 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 141 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
142 | CR save slot. Used only by optimised __tls_get_addr call stub, |
143 | relying on __tls_get_addr_opt not saving CR.. */ | |
144 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
145 | ||
5bd4f169 | 146 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 147 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
148 | /* TOC base alignment. */ |
149 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
150 | |
151 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
152 | #define TP_OFFSET 0x7000 | |
153 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 154 | |
ad8e1ba5 AM |
155 | /* .plt call stub instructions. The normal stub is like this, but |
156 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 157 | insert an addi to adjust r11. */ |
a078d95a | 158 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
159 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
160 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
161 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
162 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
163 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
164 | #define BCTR 0x4e800420 /* bctr */ |
165 | ||
07d6d2b8 AM |
166 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
167 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ | |
168 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
169 | ||
170 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
171 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
172 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
173 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
174 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
175 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
176 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 177 | |
71a39c98 | 178 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 179 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 180 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 181 | |
07d6d2b8 AM |
182 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
183 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
184 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 185 | |
07d6d2b8 | 186 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
006589cf AM |
187 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
188 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
a345bc8d | 189 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
07d6d2b8 | 190 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
a345bc8d | 191 | |
9e390558 AM |
192 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
193 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 194 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
195 | /* 0: */ |
196 | /* .quad plt0-1f */ | |
197 | /* __glink: */ | |
198 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
199 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
200 | /* 1: */ | |
201 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 202 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 203 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
204 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
205 | /* ld %12,0(%11) */ | |
206 | /* ld %2,8(%11) */ | |
207 | /* mtctr %12 */ | |
208 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 209 | /* bctr */ |
b9e5796b AM |
210 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
211 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
212 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
213 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
214 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
215 | |
216 | /* Pad with this. */ | |
217 | #define NOP 0x60000000 | |
218 | ||
721956f4 AM |
219 | /* Some other nops. */ |
220 | #define CROR_151515 0x4def7b82 | |
221 | #define CROR_313131 0x4ffffb82 | |
222 | ||
cedb70c5 | 223 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
224 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
225 | #define B_DOT 0x48000000 /* b . */ | |
226 | ||
227 | /* After that, we need two instructions to load the index, followed by | |
228 | a branch. */ | |
229 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 230 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 231 | |
deb0e272 AM |
232 | /* Instructions used by the save and restore reg functions. */ |
233 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
234 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
235 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
236 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
237 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
238 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
239 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
240 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
241 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
242 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
243 | #define BLR 0x4e800020 /* blr */ |
244 | ||
41bd81ab AM |
245 | /* Since .opd is an array of descriptors and each entry will end up |
246 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
247 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 248 | relocate .opd without reloc entries. */ |
41bd81ab AM |
249 | #ifndef NO_OPD_RELOCS |
250 | #define NO_OPD_RELOCS 0 | |
251 | #endif | |
810d4e75 | 252 | |
a4b6fadd AM |
253 | #ifndef ARRAY_SIZE |
254 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
255 | #endif | |
256 | ||
810d4e75 AM |
257 | static inline int |
258 | abiversion (bfd *abfd) | |
259 | { | |
260 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
261 | } | |
262 | ||
263 | static inline void | |
264 | set_abiversion (bfd *abfd, int ver) | |
265 | { | |
266 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
267 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
268 | } | |
5bd4f169 | 269 | \f |
f5e87a1d | 270 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 271 | |
5bd4f169 | 272 | /* Relocation HOWTO's. */ |
04c9666a | 273 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 274 | |
f3185997 NC |
275 | static reloc_howto_type ppc64_elf_howto_raw[] = |
276 | { | |
5bd4f169 AM |
277 | /* This reloc does nothing. */ |
278 | HOWTO (R_PPC64_NONE, /* type */ | |
279 | 0, /* rightshift */ | |
6346d5ca AM |
280 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
281 | 0, /* bitsize */ | |
b34976b6 | 282 | FALSE, /* pc_relative */ |
5bd4f169 | 283 | 0, /* bitpos */ |
f5e87a1d | 284 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
285 | bfd_elf_generic_reloc, /* special_function */ |
286 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 287 | FALSE, /* partial_inplace */ |
d006db6c | 288 | 0, /* src_mask */ |
5bd4f169 | 289 | 0, /* dst_mask */ |
b34976b6 | 290 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
291 | |
292 | /* A standard 32 bit relocation. */ | |
293 | HOWTO (R_PPC64_ADDR32, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 32, /* bitsize */ | |
b34976b6 | 297 | FALSE, /* pc_relative */ |
5bd4f169 AM |
298 | 0, /* bitpos */ |
299 | complain_overflow_bitfield, /* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 302 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
303 | 0, /* src_mask */ |
304 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
306 | |
307 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
308 | FIXME: we don't check that, we just clear them. */ | |
309 | HOWTO (R_PPC64_ADDR24, /* type */ | |
310 | 0, /* rightshift */ | |
311 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
312 | 26, /* bitsize */ | |
b34976b6 | 313 | FALSE, /* pc_relative */ |
5bd4f169 AM |
314 | 0, /* bitpos */ |
315 | complain_overflow_bitfield, /* complain_on_overflow */ | |
316 | bfd_elf_generic_reloc, /* special_function */ | |
317 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 318 | FALSE, /* partial_inplace */ |
d006db6c | 319 | 0, /* src_mask */ |
f5e87a1d | 320 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 321 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
322 | |
323 | /* A standard 16 bit relocation. */ | |
324 | HOWTO (R_PPC64_ADDR16, /* type */ | |
325 | 0, /* rightshift */ | |
326 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 16, /* bitsize */ | |
b34976b6 | 328 | FALSE, /* pc_relative */ |
5bd4f169 AM |
329 | 0, /* bitpos */ |
330 | complain_overflow_bitfield, /* complain_on_overflow */ | |
331 | bfd_elf_generic_reloc, /* special_function */ | |
332 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 333 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
334 | 0, /* src_mask */ |
335 | 0xffff, /* dst_mask */ | |
b34976b6 | 336 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
337 | |
338 | /* A 16 bit relocation without overflow. */ | |
339 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
5bd4f169 AM |
344 | 0, /* bitpos */ |
345 | complain_overflow_dont,/* complain_on_overflow */ | |
346 | bfd_elf_generic_reloc, /* special_function */ | |
347 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
349 | 0, /* src_mask */ |
350 | 0xffff, /* dst_mask */ | |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
352 | |
353 | /* Bits 16-31 of an address. */ | |
354 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
355 | 16, /* rightshift */ | |
356 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 16, /* bitsize */ | |
b34976b6 | 358 | FALSE, /* pc_relative */ |
5bd4f169 | 359 | 0, /* bitpos */ |
f9c6b907 | 360 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
361 | bfd_elf_generic_reloc, /* special_function */ |
362 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 363 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
364 | 0, /* src_mask */ |
365 | 0xffff, /* dst_mask */ | |
b34976b6 | 366 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
367 | |
368 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
369 | bits, treated as a signed number, is negative. */ | |
370 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
371 | 16, /* rightshift */ | |
372 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
373 | 16, /* bitsize */ | |
b34976b6 | 374 | FALSE, /* pc_relative */ |
5bd4f169 | 375 | 0, /* bitpos */ |
f9c6b907 | 376 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 377 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 378 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 379 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
380 | 0, /* src_mask */ |
381 | 0xffff, /* dst_mask */ | |
b34976b6 | 382 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
383 | |
384 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
385 | FIXME: we don't check that, we just clear them. */ | |
386 | HOWTO (R_PPC64_ADDR14, /* type */ | |
387 | 0, /* rightshift */ | |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 16, /* bitsize */ | |
b34976b6 | 390 | FALSE, /* pc_relative */ |
5bd4f169 | 391 | 0, /* bitpos */ |
b80eed39 | 392 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 393 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 394 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 395 | FALSE, /* partial_inplace */ |
d006db6c | 396 | 0, /* src_mask */ |
f5e87a1d | 397 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 398 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
399 | |
400 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
401 | indicate that the branch is expected to be taken. The lower two | |
402 | bits must be zero. */ | |
403 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
404 | 0, /* rightshift */ | |
405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
406 | 16, /* bitsize */ | |
b34976b6 | 407 | FALSE, /* pc_relative */ |
5bd4f169 | 408 | 0, /* bitpos */ |
b80eed39 | 409 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 410 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 411 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 412 | FALSE, /* partial_inplace */ |
d006db6c | 413 | 0, /* src_mask */ |
f5e87a1d | 414 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 415 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
416 | |
417 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
418 | indicate that the branch is not expected to be taken. The lower | |
419 | two bits must be zero. */ | |
420 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
421 | 0, /* rightshift */ | |
422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 16, /* bitsize */ | |
b34976b6 | 424 | FALSE, /* pc_relative */ |
5bd4f169 | 425 | 0, /* bitpos */ |
b80eed39 | 426 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 427 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 428 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 429 | FALSE, /* partial_inplace */ |
d006db6c | 430 | 0, /* src_mask */ |
f5e87a1d | 431 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 432 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
433 | |
434 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
435 | HOWTO (R_PPC64_REL24, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 26, /* bitsize */ | |
b34976b6 | 439 | TRUE, /* pc_relative */ |
5bd4f169 AM |
440 | 0, /* bitpos */ |
441 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 442 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 443 | "R_PPC64_REL24", /* name */ |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
d006db6c | 445 | 0, /* src_mask */ |
f5e87a1d | 446 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 447 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
448 | |
449 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
450 | HOWTO (R_PPC64_REL14, /* type */ | |
451 | 0, /* rightshift */ | |
452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 16, /* bitsize */ | |
b34976b6 | 454 | TRUE, /* pc_relative */ |
5bd4f169 AM |
455 | 0, /* bitpos */ |
456 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 457 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 458 | "R_PPC64_REL14", /* name */ |
b34976b6 | 459 | FALSE, /* partial_inplace */ |
d006db6c | 460 | 0, /* src_mask */ |
f5e87a1d | 461 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 462 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
463 | |
464 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
465 | the branch is expected to be taken. The lower two bits must be | |
466 | zero. */ | |
467 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
468 | 0, /* rightshift */ | |
469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 16, /* bitsize */ | |
b34976b6 | 471 | TRUE, /* pc_relative */ |
5bd4f169 AM |
472 | 0, /* bitpos */ |
473 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 474 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 475 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 476 | FALSE, /* partial_inplace */ |
d006db6c | 477 | 0, /* src_mask */ |
f5e87a1d | 478 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 479 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
480 | |
481 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
482 | the branch is not expected to be taken. The lower two bits must | |
483 | be zero. */ | |
484 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
485 | 0, /* rightshift */ | |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 16, /* bitsize */ | |
b34976b6 | 488 | TRUE, /* pc_relative */ |
5bd4f169 AM |
489 | 0, /* bitpos */ |
490 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 491 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 492 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
d006db6c | 494 | 0, /* src_mask */ |
f5e87a1d | 495 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 496 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
497 | |
498 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
499 | symbol. */ | |
500 | HOWTO (R_PPC64_GOT16, /* type */ | |
501 | 0, /* rightshift */ | |
502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 16, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
5bd4f169 AM |
505 | 0, /* bitpos */ |
506 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 507 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 508 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
510 | 0, /* src_mask */ |
511 | 0xffff, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
513 | |
514 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
515 | the symbol. */ | |
516 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
517 | 0, /* rightshift */ | |
518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
519 | 16, /* bitsize */ | |
b34976b6 | 520 | FALSE, /* pc_relative */ |
5bd4f169 AM |
521 | 0, /* bitpos */ |
522 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 523 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 524 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 525 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
526 | 0, /* src_mask */ |
527 | 0xffff, /* dst_mask */ | |
b34976b6 | 528 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
529 | |
530 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
531 | the symbol. */ | |
532 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
533 | 16, /* rightshift */ | |
534 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
535 | 16, /* bitsize */ | |
b34976b6 | 536 | FALSE, /* pc_relative */ |
5bd4f169 | 537 | 0, /* bitpos */ |
f9c6b907 | 538 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 539 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 540 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 541 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
542 | 0, /* src_mask */ |
543 | 0xffff, /* dst_mask */ | |
b34976b6 | 544 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
545 | |
546 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
547 | the symbol. */ | |
548 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
549 | 16, /* rightshift */ | |
550 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
551 | 16, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
5bd4f169 | 553 | 0, /* bitpos */ |
f9c6b907 | 554 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 555 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 556 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
558 | 0, /* src_mask */ |
559 | 0xffff, /* dst_mask */ | |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
561 | |
562 | /* This is used only by the dynamic linker. The symbol should exist | |
563 | both in the object being run and in some shared library. The | |
564 | dynamic linker copies the data addressed by the symbol from the | |
565 | shared library into the object, because the object being | |
566 | run has to have the data at some particular address. */ | |
567 | HOWTO (R_PPC64_COPY, /* type */ | |
568 | 0, /* rightshift */ | |
f5e87a1d AM |
569 | 0, /* this one is variable size */ |
570 | 0, /* bitsize */ | |
b34976b6 | 571 | FALSE, /* pc_relative */ |
5bd4f169 | 572 | 0, /* bitpos */ |
f5e87a1d AM |
573 | complain_overflow_dont, /* complain_on_overflow */ |
574 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 575 | "R_PPC64_COPY", /* name */ |
b34976b6 | 576 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
577 | 0, /* src_mask */ |
578 | 0, /* dst_mask */ | |
b34976b6 | 579 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
580 | |
581 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
582 | entries. */ | |
583 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
584 | 0, /* rightshift */ | |
585 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
586 | 64, /* bitsize */ | |
b34976b6 | 587 | FALSE, /* pc_relative */ |
5bd4f169 AM |
588 | 0, /* bitpos */ |
589 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 590 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 591 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 592 | FALSE, /* partial_inplace */ |
5bd4f169 | 593 | 0, /* src_mask */ |
f5e87a1d | 594 | ONES (64), /* dst_mask */ |
b34976b6 | 595 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
596 | |
597 | /* Created by the link editor. Marks a procedure linkage table | |
598 | entry for a symbol. */ | |
599 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
600 | 0, /* rightshift */ | |
601 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
602 | 0, /* bitsize */ | |
b34976b6 | 603 | FALSE, /* pc_relative */ |
5bd4f169 AM |
604 | 0, /* bitpos */ |
605 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 606 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 607 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 608 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
609 | 0, /* src_mask */ |
610 | 0, /* dst_mask */ | |
b34976b6 | 611 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
612 | |
613 | /* Used only by the dynamic linker. When the object is run, this | |
614 | doubleword64 is set to the load address of the object, plus the | |
615 | addend. */ | |
616 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
617 | 0, /* rightshift */ | |
618 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
619 | 64, /* bitsize */ | |
b34976b6 | 620 | FALSE, /* pc_relative */ |
5bd4f169 AM |
621 | 0, /* bitpos */ |
622 | complain_overflow_dont, /* complain_on_overflow */ | |
623 | bfd_elf_generic_reloc, /* special_function */ | |
624 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
5bd4f169 | 626 | 0, /* src_mask */ |
f5e87a1d | 627 | ONES (64), /* dst_mask */ |
b34976b6 | 628 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
629 | |
630 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
631 | HOWTO (R_PPC64_UADDR32, /* type */ | |
632 | 0, /* rightshift */ | |
633 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
634 | 32, /* bitsize */ | |
b34976b6 | 635 | FALSE, /* pc_relative */ |
5bd4f169 AM |
636 | 0, /* bitpos */ |
637 | complain_overflow_bitfield, /* complain_on_overflow */ | |
638 | bfd_elf_generic_reloc, /* special_function */ | |
639 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 640 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
641 | 0, /* src_mask */ |
642 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 643 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
644 | |
645 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
646 | HOWTO (R_PPC64_UADDR16, /* type */ | |
647 | 0, /* rightshift */ | |
648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 16, /* bitsize */ | |
b34976b6 | 650 | FALSE, /* pc_relative */ |
5bd4f169 AM |
651 | 0, /* bitpos */ |
652 | complain_overflow_bitfield, /* complain_on_overflow */ | |
653 | bfd_elf_generic_reloc, /* special_function */ | |
654 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
656 | 0, /* src_mask */ |
657 | 0xffff, /* dst_mask */ | |
b34976b6 | 658 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
659 | |
660 | /* 32-bit PC relative. */ | |
661 | HOWTO (R_PPC64_REL32, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 32, /* bitsize */ | |
b34976b6 | 665 | TRUE, /* pc_relative */ |
5bd4f169 | 666 | 0, /* bitpos */ |
5bd4f169 AM |
667 | complain_overflow_signed, /* complain_on_overflow */ |
668 | bfd_elf_generic_reloc, /* special_function */ | |
669 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 670 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
671 | 0, /* src_mask */ |
672 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 673 | TRUE), /* pcrel_offset */ |
5bd4f169 | 674 | |
10ed1bba | 675 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
676 | HOWTO (R_PPC64_PLT32, /* type */ |
677 | 0, /* rightshift */ | |
678 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
679 | 32, /* bitsize */ | |
b34976b6 | 680 | FALSE, /* pc_relative */ |
5bd4f169 AM |
681 | 0, /* bitpos */ |
682 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 683 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 684 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 685 | FALSE, /* partial_inplace */ |
5bd4f169 | 686 | 0, /* src_mask */ |
f5e87a1d | 687 | 0xffffffff, /* dst_mask */ |
b34976b6 | 688 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
689 | |
690 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
691 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
692 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
693 | 0, /* rightshift */ | |
694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
695 | 32, /* bitsize */ | |
b34976b6 | 696 | TRUE, /* pc_relative */ |
5bd4f169 AM |
697 | 0, /* bitpos */ |
698 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 699 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 700 | "R_PPC64_PLTREL32", /* name */ |
b34976b6 | 701 | FALSE, /* partial_inplace */ |
5bd4f169 | 702 | 0, /* src_mask */ |
f5e87a1d | 703 | 0xffffffff, /* dst_mask */ |
b34976b6 | 704 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
705 | |
706 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
707 | the symbol. */ | |
708 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
709 | 0, /* rightshift */ | |
710 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 16, /* bitsize */ | |
b34976b6 | 712 | FALSE, /* pc_relative */ |
5bd4f169 AM |
713 | 0, /* bitpos */ |
714 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 715 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 716 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 717 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
718 | 0, /* src_mask */ |
719 | 0xffff, /* dst_mask */ | |
b34976b6 | 720 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
721 | |
722 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
723 | the symbol. */ | |
724 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
725 | 16, /* rightshift */ | |
726 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
727 | 16, /* bitsize */ | |
b34976b6 | 728 | FALSE, /* pc_relative */ |
5bd4f169 | 729 | 0, /* bitpos */ |
f9c6b907 | 730 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 731 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 732 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 733 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
734 | 0, /* src_mask */ |
735 | 0xffff, /* dst_mask */ | |
b34976b6 | 736 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
737 | |
738 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
739 | the symbol. */ | |
740 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
741 | 16, /* rightshift */ | |
742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 16, /* bitsize */ | |
b34976b6 | 744 | FALSE, /* pc_relative */ |
5bd4f169 | 745 | 0, /* bitpos */ |
f9c6b907 | 746 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 747 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 748 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 749 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
750 | 0, /* src_mask */ |
751 | 0xffff, /* dst_mask */ | |
b34976b6 | 752 | FALSE), /* pcrel_offset */ |
5bd4f169 | 753 | |
c061c2d8 | 754 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
755 | HOWTO (R_PPC64_SECTOFF, /* type */ |
756 | 0, /* rightshift */ | |
c061c2d8 AM |
757 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
758 | 16, /* bitsize */ | |
b34976b6 | 759 | FALSE, /* pc_relative */ |
5bd4f169 | 760 | 0, /* bitpos */ |
b80eed39 | 761 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 762 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 763 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 764 | FALSE, /* partial_inplace */ |
5bd4f169 | 765 | 0, /* src_mask */ |
c061c2d8 | 766 | 0xffff, /* dst_mask */ |
b34976b6 | 767 | FALSE), /* pcrel_offset */ |
5bd4f169 | 768 | |
c061c2d8 | 769 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
770 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
771 | 0, /* rightshift */ | |
772 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
773 | 16, /* bitsize */ | |
b34976b6 | 774 | FALSE, /* pc_relative */ |
5bd4f169 AM |
775 | 0, /* bitpos */ |
776 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 777 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 778 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 779 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
780 | 0, /* src_mask */ |
781 | 0xffff, /* dst_mask */ | |
b34976b6 | 782 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
783 | |
784 | /* 16-bit upper half section relative relocation. */ | |
785 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
786 | 16, /* rightshift */ | |
787 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
788 | 16, /* bitsize */ | |
b34976b6 | 789 | FALSE, /* pc_relative */ |
5bd4f169 | 790 | 0, /* bitpos */ |
f9c6b907 | 791 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 792 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 793 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 794 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
795 | 0, /* src_mask */ |
796 | 0xffff, /* dst_mask */ | |
b34976b6 | 797 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
798 | |
799 | /* 16-bit upper half adjusted section relative relocation. */ | |
800 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
801 | 16, /* rightshift */ | |
802 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
803 | 16, /* bitsize */ | |
b34976b6 | 804 | FALSE, /* pc_relative */ |
5bd4f169 | 805 | 0, /* bitpos */ |
f9c6b907 | 806 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 807 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 808 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 809 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
810 | 0, /* src_mask */ |
811 | 0xffff, /* dst_mask */ | |
b34976b6 | 812 | FALSE), /* pcrel_offset */ |
5bd4f169 | 813 | |
04c9666a AM |
814 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
815 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
816 | 2, /* rightshift */ |
817 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
818 | 30, /* bitsize */ | |
b34976b6 | 819 | TRUE, /* pc_relative */ |
5bd4f169 AM |
820 | 0, /* bitpos */ |
821 | complain_overflow_dont, /* complain_on_overflow */ | |
822 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 823 | "R_PPC64_REL30", /* name */ |
b34976b6 | 824 | FALSE, /* partial_inplace */ |
d006db6c | 825 | 0, /* src_mask */ |
5bd4f169 | 826 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 827 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
828 | |
829 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
830 | ||
831 | /* A standard 64-bit relocation. */ | |
832 | HOWTO (R_PPC64_ADDR64, /* type */ | |
833 | 0, /* rightshift */ | |
834 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
835 | 64, /* bitsize */ | |
b34976b6 | 836 | FALSE, /* pc_relative */ |
5bd4f169 AM |
837 | 0, /* bitpos */ |
838 | complain_overflow_dont, /* complain_on_overflow */ | |
839 | bfd_elf_generic_reloc, /* special_function */ | |
840 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 841 | FALSE, /* partial_inplace */ |
5bd4f169 | 842 | 0, /* src_mask */ |
f5e87a1d | 843 | ONES (64), /* dst_mask */ |
b34976b6 | 844 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
845 | |
846 | /* The bits 32-47 of an address. */ | |
847 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
848 | 32, /* rightshift */ | |
849 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
850 | 16, /* bitsize */ | |
b34976b6 | 851 | FALSE, /* pc_relative */ |
5bd4f169 AM |
852 | 0, /* bitpos */ |
853 | complain_overflow_dont, /* complain_on_overflow */ | |
854 | bfd_elf_generic_reloc, /* special_function */ | |
855 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 856 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
857 | 0, /* src_mask */ |
858 | 0xffff, /* dst_mask */ | |
b34976b6 | 859 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
860 | |
861 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
862 | 16 bits, treated as a signed number, is negative. */ | |
863 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
864 | 32, /* rightshift */ | |
865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
866 | 16, /* bitsize */ | |
b34976b6 | 867 | FALSE, /* pc_relative */ |
5bd4f169 AM |
868 | 0, /* bitpos */ |
869 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 870 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 871 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 872 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
873 | 0, /* src_mask */ |
874 | 0xffff, /* dst_mask */ | |
b34976b6 | 875 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
876 | |
877 | /* The bits 48-63 of an address. */ | |
878 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
879 | 48, /* rightshift */ | |
880 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
881 | 16, /* bitsize */ | |
b34976b6 | 882 | FALSE, /* pc_relative */ |
5bd4f169 AM |
883 | 0, /* bitpos */ |
884 | complain_overflow_dont, /* complain_on_overflow */ | |
885 | bfd_elf_generic_reloc, /* special_function */ | |
886 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 887 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
888 | 0, /* src_mask */ |
889 | 0xffff, /* dst_mask */ | |
b34976b6 | 890 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
891 | |
892 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
893 | 16 bits, treated as a signed number, is negative. */ | |
894 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
895 | 48, /* rightshift */ | |
896 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 16, /* bitsize */ | |
b34976b6 | 898 | FALSE, /* pc_relative */ |
5bd4f169 AM |
899 | 0, /* bitpos */ |
900 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 901 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 902 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 903 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
904 | 0, /* src_mask */ |
905 | 0xffff, /* dst_mask */ | |
b34976b6 | 906 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
907 | |
908 | /* Like ADDR64, but may be unaligned. */ | |
909 | HOWTO (R_PPC64_UADDR64, /* type */ | |
910 | 0, /* rightshift */ | |
911 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
912 | 64, /* bitsize */ | |
b34976b6 | 913 | FALSE, /* pc_relative */ |
5bd4f169 AM |
914 | 0, /* bitpos */ |
915 | complain_overflow_dont, /* complain_on_overflow */ | |
916 | bfd_elf_generic_reloc, /* special_function */ | |
917 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 918 | FALSE, /* partial_inplace */ |
5bd4f169 | 919 | 0, /* src_mask */ |
f5e87a1d | 920 | ONES (64), /* dst_mask */ |
b34976b6 | 921 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
922 | |
923 | /* 64-bit relative relocation. */ | |
924 | HOWTO (R_PPC64_REL64, /* type */ | |
925 | 0, /* rightshift */ | |
926 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
927 | 64, /* bitsize */ | |
b34976b6 | 928 | TRUE, /* pc_relative */ |
5bd4f169 AM |
929 | 0, /* bitpos */ |
930 | complain_overflow_dont, /* complain_on_overflow */ | |
931 | bfd_elf_generic_reloc, /* special_function */ | |
932 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 933 | FALSE, /* partial_inplace */ |
5bd4f169 | 934 | 0, /* src_mask */ |
f5e87a1d | 935 | ONES (64), /* dst_mask */ |
b34976b6 | 936 | TRUE), /* pcrel_offset */ |
5bd4f169 | 937 | |
cedb70c5 | 938 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
939 | HOWTO (R_PPC64_PLT64, /* type */ |
940 | 0, /* rightshift */ | |
941 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
942 | 64, /* bitsize */ | |
b34976b6 | 943 | FALSE, /* pc_relative */ |
5bd4f169 AM |
944 | 0, /* bitpos */ |
945 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 946 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 947 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 948 | FALSE, /* partial_inplace */ |
5bd4f169 | 949 | 0, /* src_mask */ |
f5e87a1d | 950 | ONES (64), /* dst_mask */ |
b34976b6 | 951 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
952 | |
953 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
954 | table. */ | |
955 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
956 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
957 | 0, /* rightshift */ | |
958 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
959 | 64, /* bitsize */ | |
b34976b6 | 960 | TRUE, /* pc_relative */ |
5bd4f169 AM |
961 | 0, /* bitpos */ |
962 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 963 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 964 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 965 | FALSE, /* partial_inplace */ |
5bd4f169 | 966 | 0, /* src_mask */ |
f5e87a1d | 967 | ONES (64), /* dst_mask */ |
b34976b6 | 968 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
969 | |
970 | /* 16 bit TOC-relative relocation. */ | |
971 | ||
972 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
973 | HOWTO (R_PPC64_TOC16, /* type */ | |
974 | 0, /* rightshift */ | |
975 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
976 | 16, /* bitsize */ | |
b34976b6 | 977 | FALSE, /* pc_relative */ |
5bd4f169 AM |
978 | 0, /* bitpos */ |
979 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 980 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 981 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 982 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
983 | 0, /* src_mask */ |
984 | 0xffff, /* dst_mask */ | |
b34976b6 | 985 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
986 | |
987 | /* 16 bit TOC-relative relocation without overflow. */ | |
988 | ||
989 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
990 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
991 | 0, /* rightshift */ | |
992 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
993 | 16, /* bitsize */ | |
b34976b6 | 994 | FALSE, /* pc_relative */ |
5bd4f169 AM |
995 | 0, /* bitpos */ |
996 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 997 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 998 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 999 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1000 | 0, /* src_mask */ |
1001 | 0xffff, /* dst_mask */ | |
b34976b6 | 1002 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1003 | |
1004 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
1005 | ||
1006 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
1007 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
1008 | 16, /* rightshift */ | |
1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 16, /* bitsize */ | |
b34976b6 | 1011 | FALSE, /* pc_relative */ |
5bd4f169 | 1012 | 0, /* bitpos */ |
f9c6b907 | 1013 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1014 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1015 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1016 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1017 | 0, /* src_mask */ |
1018 | 0xffff, /* dst_mask */ | |
b34976b6 | 1019 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1020 | |
1021 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1022 | contents of the low 16 bits, treated as a signed number, is | |
1023 | negative. */ | |
1024 | ||
1025 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1026 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1027 | 16, /* rightshift */ | |
1028 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1029 | 16, /* bitsize */ | |
b34976b6 | 1030 | FALSE, /* pc_relative */ |
5bd4f169 | 1031 | 0, /* bitpos */ |
f9c6b907 | 1032 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1033 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1034 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1035 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1036 | 0, /* src_mask */ |
1037 | 0xffff, /* dst_mask */ | |
b34976b6 | 1038 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1039 | |
1040 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1041 | ||
1042 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1043 | HOWTO (R_PPC64_TOC, /* type */ | |
1044 | 0, /* rightshift */ | |
1045 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1046 | 64, /* bitsize */ | |
b34976b6 | 1047 | FALSE, /* pc_relative */ |
5bd4f169 | 1048 | 0, /* bitpos */ |
b80eed39 | 1049 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1050 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1051 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1052 | FALSE, /* partial_inplace */ |
5bd4f169 | 1053 | 0, /* src_mask */ |
f5e87a1d | 1054 | ONES (64), /* dst_mask */ |
b34976b6 | 1055 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1056 | |
1057 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1058 | value to relocate may (!) refer to a PLT entry which the link | |
1059 | editor (a) may replace with the symbol value. If the link editor | |
1060 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1061 | entry and store the address to the new PLT entry in the GOT. | |
1062 | This permits lazy resolution of function symbols at run time. | |
1063 | The link editor may also skip all of this and just (c) emit a | |
1064 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1065 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1066 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1067 | 0, /* rightshift */ | |
1068 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1069 | 16, /* bitsize */ | |
b34976b6 | 1070 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1071 | 0, /* bitpos */ |
1072 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1073 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1074 | "R_PPC64_PLTGOT16", /* name */ |
1075 | FALSE, /* partial_inplace */ | |
1076 | 0, /* src_mask */ | |
1077 | 0xffff, /* dst_mask */ | |
1078 | FALSE), /* pcrel_offset */ | |
1079 | ||
1080 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1081 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1082 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1083 | 0, /* rightshift */ | |
1084 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1085 | 16, /* bitsize */ | |
1086 | FALSE, /* pc_relative */ | |
1087 | 0, /* bitpos */ | |
1088 | complain_overflow_dont, /* complain_on_overflow */ | |
1089 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1090 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1091 | FALSE, /* partial_inplace */ | |
1092 | 0, /* src_mask */ | |
1093 | 0xffff, /* dst_mask */ | |
1094 | FALSE), /* pcrel_offset */ | |
1095 | ||
1096 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1097 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1098 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1099 | 16, /* rightshift */ | |
1100 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1101 | 16, /* bitsize */ | |
1102 | FALSE, /* pc_relative */ | |
1103 | 0, /* bitpos */ | |
f9c6b907 | 1104 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1105 | ppc64_elf_unhandled_reloc, /* special_function */ |
1106 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1107 | FALSE, /* partial_inplace */ | |
1108 | 0, /* src_mask */ | |
1109 | 0xffff, /* dst_mask */ | |
1110 | FALSE), /* pcrel_offset */ | |
1111 | ||
1112 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1113 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1114 | is negative. */ | |
1115 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1116 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1117 | 16, /* rightshift */ | |
1118 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1119 | 16, /* bitsize */ | |
1120 | FALSE, /* pc_relative */ | |
1121 | 0, /* bitpos */ | |
f9c6b907 | 1122 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1123 | ppc64_elf_unhandled_reloc, /* special_function */ |
1124 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1125 | FALSE, /* partial_inplace */ | |
1126 | 0, /* src_mask */ | |
1127 | 0xffff, /* dst_mask */ | |
1128 | FALSE), /* pcrel_offset */ | |
1129 | ||
1130 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1131 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 16, /* bitsize */ | |
1135 | FALSE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
b80eed39 | 1137 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1138 | bfd_elf_generic_reloc, /* special_function */ |
1139 | "R_PPC64_ADDR16_DS", /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0xfffc, /* dst_mask */ | |
1143 | FALSE), /* pcrel_offset */ | |
1144 | ||
1145 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1146 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1147 | 0, /* rightshift */ | |
1148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 16, /* bitsize */ | |
1150 | FALSE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_dont,/* complain_on_overflow */ | |
1153 | bfd_elf_generic_reloc, /* special_function */ | |
1154 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1155 | FALSE, /* partial_inplace */ | |
1156 | 0, /* src_mask */ | |
1157 | 0xfffc, /* dst_mask */ | |
1158 | FALSE), /* pcrel_offset */ | |
1159 | ||
1160 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1161 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 16, /* bitsize */ | |
1165 | FALSE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_signed, /* complain_on_overflow */ | |
1168 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1169 | "R_PPC64_GOT16_DS", /* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
1172 | 0xfffc, /* dst_mask */ | |
1173 | FALSE), /* pcrel_offset */ | |
1174 | ||
1175 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1176 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1177 | 0, /* rightshift */ | |
1178 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 16, /* bitsize */ | |
1180 | FALSE, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_dont, /* complain_on_overflow */ | |
1183 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1184 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1185 | FALSE, /* partial_inplace */ | |
1186 | 0, /* src_mask */ | |
1187 | 0xfffc, /* dst_mask */ | |
1188 | FALSE), /* pcrel_offset */ | |
1189 | ||
1190 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1191 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1192 | 0, /* rightshift */ | |
1193 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1194 | 16, /* bitsize */ | |
1195 | FALSE, /* pc_relative */ | |
1196 | 0, /* bitpos */ | |
1197 | complain_overflow_dont, /* complain_on_overflow */ | |
1198 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1199 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1200 | FALSE, /* partial_inplace */ | |
1201 | 0, /* src_mask */ | |
1202 | 0xfffc, /* dst_mask */ | |
1203 | FALSE), /* pcrel_offset */ | |
1204 | ||
1205 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1206 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1207 | 0, /* rightshift */ | |
1208 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1209 | 16, /* bitsize */ | |
1210 | FALSE, /* pc_relative */ | |
1211 | 0, /* bitpos */ | |
b80eed39 | 1212 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1213 | ppc64_elf_sectoff_reloc, /* special_function */ |
1214 | "R_PPC64_SECTOFF_DS", /* name */ | |
1215 | FALSE, /* partial_inplace */ | |
1216 | 0, /* src_mask */ | |
1217 | 0xfffc, /* dst_mask */ | |
1218 | FALSE), /* pcrel_offset */ | |
1219 | ||
1220 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1221 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1222 | 0, /* rightshift */ | |
1223 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1224 | 16, /* bitsize */ | |
1225 | FALSE, /* pc_relative */ | |
1226 | 0, /* bitpos */ | |
1227 | complain_overflow_dont, /* complain_on_overflow */ | |
1228 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1229 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1230 | FALSE, /* partial_inplace */ | |
1231 | 0, /* src_mask */ | |
1232 | 0xfffc, /* dst_mask */ | |
1233 | FALSE), /* pcrel_offset */ | |
1234 | ||
1235 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1236 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1237 | 0, /* rightshift */ | |
1238 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 16, /* bitsize */ | |
1240 | FALSE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_signed, /* complain_on_overflow */ | |
1243 | ppc64_elf_toc_reloc, /* special_function */ | |
1244 | "R_PPC64_TOC16_DS", /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0, /* src_mask */ | |
1247 | 0xfffc, /* dst_mask */ | |
1248 | FALSE), /* pcrel_offset */ | |
1249 | ||
1250 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1251 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1252 | 0, /* rightshift */ | |
1253 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 16, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | ppc64_elf_toc_reloc, /* special_function */ | |
1259 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1260 | FALSE, /* partial_inplace */ | |
1261 | 0, /* src_mask */ | |
1262 | 0xfffc, /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
1265 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1266 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1267 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1268 | 0, /* rightshift */ |
1269 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 16, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_signed, /* complain_on_overflow */ | |
1274 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1275 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1276 | FALSE, /* partial_inplace */ | |
1277 | 0, /* src_mask */ | |
1278 | 0xfffc, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
1281 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1282 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1283 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1284 | 0, /* rightshift */ | |
1285 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 16, /* bitsize */ | |
1287 | FALSE, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
1289 | complain_overflow_dont, /* complain_on_overflow */ | |
1290 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1291 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1292 | FALSE, /* partial_inplace */ | |
1293 | 0, /* src_mask */ | |
1294 | 0xfffc, /* dst_mask */ | |
1295 | FALSE), /* pcrel_offset */ | |
1296 | ||
727fc41e | 1297 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1298 | HOWTO (R_PPC64_TLS, |
1299 | 0, /* rightshift */ | |
1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1301 | 32, /* bitsize */ | |
1302 | FALSE, /* pc_relative */ | |
1303 | 0, /* bitpos */ | |
1304 | complain_overflow_dont, /* complain_on_overflow */ | |
1305 | bfd_elf_generic_reloc, /* special_function */ | |
1306 | "R_PPC64_TLS", /* name */ | |
1307 | FALSE, /* partial_inplace */ | |
1308 | 0, /* src_mask */ | |
1309 | 0, /* dst_mask */ | |
1310 | FALSE), /* pcrel_offset */ | |
1311 | ||
727fc41e AM |
1312 | HOWTO (R_PPC64_TLSGD, |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 32, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_dont, /* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | "R_PPC64_TLSGD", /* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0, /* src_mask */ | |
1323 | 0, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | HOWTO (R_PPC64_TLSLD, | |
1327 | 0, /* rightshift */ | |
1328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 32, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | bfd_elf_generic_reloc, /* special_function */ | |
1334 | "R_PPC64_TLSLD", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0, /* src_mask */ | |
1337 | 0, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
23cedd1d AM |
1340 | /* Marker reloc for optimizing r2 save in prologue rather than on |
1341 | each plt call stub. */ | |
3b421ab3 AM |
1342 | HOWTO (R_PPC64_TOCSAVE, |
1343 | 0, /* rightshift */ | |
1344 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1345 | 32, /* bitsize */ | |
1346 | FALSE, /* pc_relative */ | |
1347 | 0, /* bitpos */ | |
1348 | complain_overflow_dont, /* complain_on_overflow */ | |
1349 | bfd_elf_generic_reloc, /* special_function */ | |
1350 | "R_PPC64_TOCSAVE", /* name */ | |
1351 | FALSE, /* partial_inplace */ | |
1352 | 0, /* src_mask */ | |
1353 | 0, /* dst_mask */ | |
1354 | FALSE), /* pcrel_offset */ | |
1355 | ||
23cedd1d AM |
1356 | /* Marker relocs on inline plt call instructions. */ |
1357 | HOWTO (R_PPC64_PLTSEQ, | |
1358 | 0, /* rightshift */ | |
1359 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 32, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_dont, /* complain_on_overflow */ | |
1364 | bfd_elf_generic_reloc, /* special_function */ | |
1365 | "R_PPC64_PLTSEQ", /* name */ | |
1366 | FALSE, /* partial_inplace */ | |
1367 | 0, /* src_mask */ | |
1368 | 0, /* dst_mask */ | |
1369 | FALSE), /* pcrel_offset */ | |
1370 | ||
1371 | HOWTO (R_PPC64_PLTCALL, | |
1372 | 0, /* rightshift */ | |
1373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 32, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_dont, /* complain_on_overflow */ | |
1378 | bfd_elf_generic_reloc, /* special_function */ | |
1379 | "R_PPC64_PLTCALL", /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | 0, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
411e1bfb AM |
1385 | /* Computes the load module index of the load module that contains the |
1386 | definition of its TLS sym. */ | |
1387 | HOWTO (R_PPC64_DTPMOD64, | |
1388 | 0, /* rightshift */ | |
1389 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 64, /* bitsize */ | |
1391 | FALSE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_dont, /* complain_on_overflow */ | |
1394 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1395 | "R_PPC64_DTPMOD64", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0, /* src_mask */ | |
1398 | ONES (64), /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
1401 | /* Computes a dtv-relative displacement, the difference between the value | |
1402 | of sym+add and the base address of the thread-local storage block that | |
1403 | contains the definition of sym, minus 0x8000. */ | |
1404 | HOWTO (R_PPC64_DTPREL64, | |
1405 | 0, /* rightshift */ | |
1406 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1407 | 64, /* bitsize */ | |
1408 | FALSE, /* pc_relative */ | |
1409 | 0, /* bitpos */ | |
1410 | complain_overflow_dont, /* complain_on_overflow */ | |
1411 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1412 | "R_PPC64_DTPREL64", /* name */ | |
1413 | FALSE, /* partial_inplace */ | |
1414 | 0, /* src_mask */ | |
1415 | ONES (64), /* dst_mask */ | |
1416 | FALSE), /* pcrel_offset */ | |
1417 | ||
1418 | /* A 16 bit dtprel reloc. */ | |
1419 | HOWTO (R_PPC64_DTPREL16, | |
1420 | 0, /* rightshift */ | |
1421 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1422 | 16, /* bitsize */ | |
1423 | FALSE, /* pc_relative */ | |
1424 | 0, /* bitpos */ | |
1425 | complain_overflow_signed, /* complain_on_overflow */ | |
1426 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1427 | "R_PPC64_DTPREL16", /* name */ | |
1428 | FALSE, /* partial_inplace */ | |
1429 | 0, /* src_mask */ | |
1430 | 0xffff, /* dst_mask */ | |
1431 | FALSE), /* pcrel_offset */ | |
1432 | ||
1433 | /* Like DTPREL16, but no overflow. */ | |
1434 | HOWTO (R_PPC64_DTPREL16_LO, | |
1435 | 0, /* rightshift */ | |
1436 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1437 | 16, /* bitsize */ | |
1438 | FALSE, /* pc_relative */ | |
1439 | 0, /* bitpos */ | |
1440 | complain_overflow_dont, /* complain_on_overflow */ | |
1441 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1442 | "R_PPC64_DTPREL16_LO", /* name */ | |
1443 | FALSE, /* partial_inplace */ | |
1444 | 0, /* src_mask */ | |
1445 | 0xffff, /* dst_mask */ | |
1446 | FALSE), /* pcrel_offset */ | |
1447 | ||
1448 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1449 | HOWTO (R_PPC64_DTPREL16_HI, | |
1450 | 16, /* rightshift */ | |
1451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1452 | 16, /* bitsize */ | |
1453 | FALSE, /* pc_relative */ | |
1454 | 0, /* bitpos */ | |
f9c6b907 | 1455 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1456 | ppc64_elf_unhandled_reloc, /* special_function */ |
1457 | "R_PPC64_DTPREL16_HI", /* name */ | |
1458 | FALSE, /* partial_inplace */ | |
1459 | 0, /* src_mask */ | |
1460 | 0xffff, /* dst_mask */ | |
1461 | FALSE), /* pcrel_offset */ | |
1462 | ||
1463 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1464 | HOWTO (R_PPC64_DTPREL16_HA, | |
1465 | 16, /* rightshift */ | |
1466 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1467 | 16, /* bitsize */ | |
1468 | FALSE, /* pc_relative */ | |
1469 | 0, /* bitpos */ | |
f9c6b907 | 1470 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1471 | ppc64_elf_unhandled_reloc, /* special_function */ |
1472 | "R_PPC64_DTPREL16_HA", /* name */ | |
1473 | FALSE, /* partial_inplace */ | |
1474 | 0, /* src_mask */ | |
1475 | 0xffff, /* dst_mask */ | |
1476 | FALSE), /* pcrel_offset */ | |
1477 | ||
1478 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1479 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1480 | 32, /* rightshift */ | |
1481 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1482 | 16, /* bitsize */ | |
1483 | FALSE, /* pc_relative */ | |
1484 | 0, /* bitpos */ | |
1485 | complain_overflow_dont, /* complain_on_overflow */ | |
1486 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1487 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1488 | FALSE, /* partial_inplace */ | |
1489 | 0, /* src_mask */ | |
1490 | 0xffff, /* dst_mask */ | |
1491 | FALSE), /* pcrel_offset */ | |
1492 | ||
1493 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1494 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1495 | 32, /* rightshift */ | |
1496 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1497 | 16, /* bitsize */ | |
1498 | FALSE, /* pc_relative */ | |
1499 | 0, /* bitpos */ | |
1500 | complain_overflow_dont, /* complain_on_overflow */ | |
1501 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1502 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1503 | FALSE, /* partial_inplace */ | |
1504 | 0, /* src_mask */ | |
1505 | 0xffff, /* dst_mask */ | |
1506 | FALSE), /* pcrel_offset */ | |
1507 | ||
1508 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1509 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1510 | 48, /* rightshift */ | |
1511 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1512 | 16, /* bitsize */ | |
1513 | FALSE, /* pc_relative */ | |
1514 | 0, /* bitpos */ | |
1515 | complain_overflow_dont, /* complain_on_overflow */ | |
1516 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1517 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1518 | FALSE, /* partial_inplace */ | |
1519 | 0, /* src_mask */ | |
1520 | 0xffff, /* dst_mask */ | |
1521 | FALSE), /* pcrel_offset */ | |
1522 | ||
1523 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1524 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1525 | 48, /* rightshift */ | |
1526 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1527 | 16, /* bitsize */ | |
1528 | FALSE, /* pc_relative */ | |
1529 | 0, /* bitpos */ | |
1530 | complain_overflow_dont, /* complain_on_overflow */ | |
1531 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1532 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1533 | FALSE, /* partial_inplace */ | |
1534 | 0, /* src_mask */ | |
1535 | 0xffff, /* dst_mask */ | |
1536 | FALSE), /* pcrel_offset */ | |
1537 | ||
1538 | /* Like DTPREL16, but for insns with a DS field. */ | |
1539 | HOWTO (R_PPC64_DTPREL16_DS, | |
1540 | 0, /* rightshift */ | |
1541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1542 | 16, /* bitsize */ | |
1543 | FALSE, /* pc_relative */ | |
1544 | 0, /* bitpos */ | |
1545 | complain_overflow_signed, /* complain_on_overflow */ | |
1546 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1547 | "R_PPC64_DTPREL16_DS", /* name */ | |
1548 | FALSE, /* partial_inplace */ | |
1549 | 0, /* src_mask */ | |
1550 | 0xfffc, /* dst_mask */ | |
1551 | FALSE), /* pcrel_offset */ | |
1552 | ||
1553 | /* Like DTPREL16_DS, but no overflow. */ | |
1554 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1555 | 0, /* rightshift */ | |
1556 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1557 | 16, /* bitsize */ | |
1558 | FALSE, /* pc_relative */ | |
1559 | 0, /* bitpos */ | |
1560 | complain_overflow_dont, /* complain_on_overflow */ | |
1561 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1562 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1563 | FALSE, /* partial_inplace */ | |
1564 | 0, /* src_mask */ | |
1565 | 0xfffc, /* dst_mask */ | |
1566 | FALSE), /* pcrel_offset */ | |
1567 | ||
1568 | /* Computes a tp-relative displacement, the difference between the value of | |
1569 | sym+add and the value of the thread pointer (r13). */ | |
1570 | HOWTO (R_PPC64_TPREL64, | |
1571 | 0, /* rightshift */ | |
1572 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1573 | 64, /* bitsize */ | |
1574 | FALSE, /* pc_relative */ | |
1575 | 0, /* bitpos */ | |
1576 | complain_overflow_dont, /* complain_on_overflow */ | |
1577 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1578 | "R_PPC64_TPREL64", /* name */ | |
1579 | FALSE, /* partial_inplace */ | |
1580 | 0, /* src_mask */ | |
1581 | ONES (64), /* dst_mask */ | |
1582 | FALSE), /* pcrel_offset */ | |
1583 | ||
1584 | /* A 16 bit tprel reloc. */ | |
1585 | HOWTO (R_PPC64_TPREL16, | |
1586 | 0, /* rightshift */ | |
1587 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1588 | 16, /* bitsize */ | |
1589 | FALSE, /* pc_relative */ | |
1590 | 0, /* bitpos */ | |
1591 | complain_overflow_signed, /* complain_on_overflow */ | |
1592 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1593 | "R_PPC64_TPREL16", /* name */ | |
1594 | FALSE, /* partial_inplace */ | |
1595 | 0, /* src_mask */ | |
1596 | 0xffff, /* dst_mask */ | |
1597 | FALSE), /* pcrel_offset */ | |
1598 | ||
1599 | /* Like TPREL16, but no overflow. */ | |
1600 | HOWTO (R_PPC64_TPREL16_LO, | |
1601 | 0, /* rightshift */ | |
1602 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1603 | 16, /* bitsize */ | |
1604 | FALSE, /* pc_relative */ | |
1605 | 0, /* bitpos */ | |
1606 | complain_overflow_dont, /* complain_on_overflow */ | |
1607 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1608 | "R_PPC64_TPREL16_LO", /* name */ | |
1609 | FALSE, /* partial_inplace */ | |
1610 | 0, /* src_mask */ | |
1611 | 0xffff, /* dst_mask */ | |
1612 | FALSE), /* pcrel_offset */ | |
1613 | ||
1614 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1615 | HOWTO (R_PPC64_TPREL16_HI, | |
1616 | 16, /* rightshift */ | |
1617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1618 | 16, /* bitsize */ | |
1619 | FALSE, /* pc_relative */ | |
1620 | 0, /* bitpos */ | |
f9c6b907 | 1621 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1622 | ppc64_elf_unhandled_reloc, /* special_function */ |
1623 | "R_PPC64_TPREL16_HI", /* name */ | |
1624 | FALSE, /* partial_inplace */ | |
1625 | 0, /* src_mask */ | |
1626 | 0xffff, /* dst_mask */ | |
1627 | FALSE), /* pcrel_offset */ | |
1628 | ||
1629 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1630 | HOWTO (R_PPC64_TPREL16_HA, | |
1631 | 16, /* rightshift */ | |
1632 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 16, /* bitsize */ | |
1634 | FALSE, /* pc_relative */ | |
1635 | 0, /* bitpos */ | |
f9c6b907 | 1636 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1637 | ppc64_elf_unhandled_reloc, /* special_function */ |
1638 | "R_PPC64_TPREL16_HA", /* name */ | |
1639 | FALSE, /* partial_inplace */ | |
1640 | 0, /* src_mask */ | |
1641 | 0xffff, /* dst_mask */ | |
1642 | FALSE), /* pcrel_offset */ | |
1643 | ||
1644 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1645 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1646 | 32, /* rightshift */ | |
1647 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1648 | 16, /* bitsize */ | |
1649 | FALSE, /* pc_relative */ | |
1650 | 0, /* bitpos */ | |
1651 | complain_overflow_dont, /* complain_on_overflow */ | |
1652 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1653 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1654 | FALSE, /* partial_inplace */ | |
1655 | 0, /* src_mask */ | |
1656 | 0xffff, /* dst_mask */ | |
1657 | FALSE), /* pcrel_offset */ | |
1658 | ||
1659 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1660 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1661 | 32, /* rightshift */ | |
1662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1663 | 16, /* bitsize */ | |
1664 | FALSE, /* pc_relative */ | |
1665 | 0, /* bitpos */ | |
1666 | complain_overflow_dont, /* complain_on_overflow */ | |
1667 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1668 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1669 | FALSE, /* partial_inplace */ | |
1670 | 0, /* src_mask */ | |
1671 | 0xffff, /* dst_mask */ | |
1672 | FALSE), /* pcrel_offset */ | |
1673 | ||
1674 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1675 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1676 | 48, /* rightshift */ | |
1677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1678 | 16, /* bitsize */ | |
1679 | FALSE, /* pc_relative */ | |
1680 | 0, /* bitpos */ | |
1681 | complain_overflow_dont, /* complain_on_overflow */ | |
1682 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1683 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1684 | FALSE, /* partial_inplace */ | |
1685 | 0, /* src_mask */ | |
1686 | 0xffff, /* dst_mask */ | |
1687 | FALSE), /* pcrel_offset */ | |
1688 | ||
1689 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1690 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1691 | 48, /* rightshift */ | |
1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1693 | 16, /* bitsize */ | |
1694 | FALSE, /* pc_relative */ | |
1695 | 0, /* bitpos */ | |
1696 | complain_overflow_dont, /* complain_on_overflow */ | |
1697 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1698 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1699 | FALSE, /* partial_inplace */ | |
1700 | 0, /* src_mask */ | |
1701 | 0xffff, /* dst_mask */ | |
1702 | FALSE), /* pcrel_offset */ | |
1703 | ||
1704 | /* Like TPREL16, but for insns with a DS field. */ | |
1705 | HOWTO (R_PPC64_TPREL16_DS, | |
1706 | 0, /* rightshift */ | |
1707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1708 | 16, /* bitsize */ | |
1709 | FALSE, /* pc_relative */ | |
1710 | 0, /* bitpos */ | |
1711 | complain_overflow_signed, /* complain_on_overflow */ | |
1712 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1713 | "R_PPC64_TPREL16_DS", /* name */ | |
1714 | FALSE, /* partial_inplace */ | |
1715 | 0, /* src_mask */ | |
1716 | 0xfffc, /* dst_mask */ | |
1717 | FALSE), /* pcrel_offset */ | |
1718 | ||
1719 | /* Like TPREL16_DS, but no overflow. */ | |
1720 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1721 | 0, /* rightshift */ | |
1722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1723 | 16, /* bitsize */ | |
1724 | FALSE, /* pc_relative */ | |
1725 | 0, /* bitpos */ | |
1726 | complain_overflow_dont, /* complain_on_overflow */ | |
1727 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1728 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1729 | FALSE, /* partial_inplace */ | |
1730 | 0, /* src_mask */ | |
1731 | 0xfffc, /* dst_mask */ | |
1732 | FALSE), /* pcrel_offset */ | |
1733 | ||
1734 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1735 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1736 | to the first entry relative to the TOC base (r2). */ | |
1737 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1738 | 0, /* rightshift */ | |
1739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1740 | 16, /* bitsize */ | |
1741 | FALSE, /* pc_relative */ | |
1742 | 0, /* bitpos */ | |
1743 | complain_overflow_signed, /* complain_on_overflow */ | |
1744 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1745 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1746 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1747 | 0, /* src_mask */ |
1748 | 0xffff, /* dst_mask */ | |
b34976b6 | 1749 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1750 | |
411e1bfb AM |
1751 | /* Like GOT_TLSGD16, but no overflow. */ |
1752 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1753 | 0, /* rightshift */ |
1754 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1755 | 16, /* bitsize */ | |
b34976b6 | 1756 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1757 | 0, /* bitpos */ |
1758 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1759 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1760 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1761 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1762 | 0, /* src_mask */ |
1763 | 0xffff, /* dst_mask */ | |
b34976b6 | 1764 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1765 | |
411e1bfb AM |
1766 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1767 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1768 | 16, /* rightshift */ |
1769 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1770 | 16, /* bitsize */ | |
b34976b6 | 1771 | FALSE, /* pc_relative */ |
5bd4f169 | 1772 | 0, /* bitpos */ |
f9c6b907 | 1773 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1774 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1775 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1776 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1777 | 0, /* src_mask */ |
1778 | 0xffff, /* dst_mask */ | |
b34976b6 | 1779 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1780 | |
411e1bfb AM |
1781 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1782 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1783 | 16, /* rightshift */ |
1784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1785 | 16, /* bitsize */ | |
b34976b6 | 1786 | FALSE, /* pc_relative */ |
5bd4f169 | 1787 | 0, /* bitpos */ |
f9c6b907 | 1788 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1789 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1790 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1791 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1792 | 0, /* src_mask */ |
1793 | 0xffff, /* dst_mask */ | |
b34976b6 | 1794 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1795 | |
411e1bfb AM |
1796 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1797 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1798 | first entry relative to the TOC base (r2). */ | |
1799 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1800 | 0, /* rightshift */ |
1801 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1802 | 16, /* bitsize */ | |
b34976b6 | 1803 | FALSE, /* pc_relative */ |
5bd4f169 | 1804 | 0, /* bitpos */ |
411e1bfb AM |
1805 | complain_overflow_signed, /* complain_on_overflow */ |
1806 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1807 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1808 | FALSE, /* partial_inplace */ |
d006db6c | 1809 | 0, /* src_mask */ |
411e1bfb | 1810 | 0xffff, /* dst_mask */ |
b34976b6 | 1811 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1812 | |
411e1bfb AM |
1813 | /* Like GOT_TLSLD16, but no overflow. */ |
1814 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1815 | 0, /* rightshift */ |
1816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1817 | 16, /* bitsize */ | |
b34976b6 | 1818 | FALSE, /* pc_relative */ |
5bd4f169 | 1819 | 0, /* bitpos */ |
411e1bfb AM |
1820 | complain_overflow_dont, /* complain_on_overflow */ |
1821 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1822 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1823 | FALSE, /* partial_inplace */ |
d006db6c | 1824 | 0, /* src_mask */ |
411e1bfb | 1825 | 0xffff, /* dst_mask */ |
b34976b6 | 1826 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1827 | |
411e1bfb AM |
1828 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1829 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1830 | 16, /* rightshift */ | |
5bd4f169 AM |
1831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1832 | 16, /* bitsize */ | |
b34976b6 | 1833 | FALSE, /* pc_relative */ |
5bd4f169 | 1834 | 0, /* bitpos */ |
f9c6b907 | 1835 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1836 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1837 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1838 | FALSE, /* partial_inplace */ |
d006db6c | 1839 | 0, /* src_mask */ |
411e1bfb | 1840 | 0xffff, /* dst_mask */ |
b34976b6 | 1841 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1842 | |
411e1bfb AM |
1843 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1844 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1845 | 16, /* rightshift */ | |
5bd4f169 AM |
1846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1847 | 16, /* bitsize */ | |
b34976b6 | 1848 | FALSE, /* pc_relative */ |
5bd4f169 | 1849 | 0, /* bitpos */ |
f9c6b907 | 1850 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1851 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1852 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1853 | FALSE, /* partial_inplace */ |
d006db6c | 1854 | 0, /* src_mask */ |
411e1bfb | 1855 | 0xffff, /* dst_mask */ |
b34976b6 | 1856 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1857 | |
411e1bfb AM |
1858 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1859 | the offset to the entry relative to the TOC base (r2). */ | |
1860 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1861 | 0, /* rightshift */ |
1862 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1863 | 16, /* bitsize */ | |
b34976b6 | 1864 | FALSE, /* pc_relative */ |
5bd4f169 | 1865 | 0, /* bitpos */ |
411e1bfb | 1866 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1867 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1868 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1869 | FALSE, /* partial_inplace */ |
d006db6c | 1870 | 0, /* src_mask */ |
5bd4f169 | 1871 | 0xfffc, /* dst_mask */ |
b34976b6 | 1872 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1873 | |
411e1bfb AM |
1874 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1875 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1876 | 0, /* rightshift */ |
c061c2d8 AM |
1877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1878 | 16, /* bitsize */ | |
b34976b6 | 1879 | FALSE, /* pc_relative */ |
5bd4f169 | 1880 | 0, /* bitpos */ |
411e1bfb AM |
1881 | complain_overflow_dont, /* complain_on_overflow */ |
1882 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1883 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1884 | FALSE, /* partial_inplace */ |
d006db6c | 1885 | 0, /* src_mask */ |
c061c2d8 | 1886 | 0xfffc, /* dst_mask */ |
b34976b6 | 1887 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1888 | |
411e1bfb AM |
1889 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1890 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1891 | 16, /* rightshift */ | |
5bd4f169 AM |
1892 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1893 | 16, /* bitsize */ | |
b34976b6 | 1894 | FALSE, /* pc_relative */ |
5bd4f169 | 1895 | 0, /* bitpos */ |
f9c6b907 | 1896 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1897 | ppc64_elf_unhandled_reloc, /* special_function */ |
1898 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1899 | FALSE, /* partial_inplace */ |
d006db6c | 1900 | 0, /* src_mask */ |
411e1bfb | 1901 | 0xffff, /* dst_mask */ |
b34976b6 | 1902 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1903 | |
411e1bfb AM |
1904 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1905 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1906 | 16, /* rightshift */ | |
1907 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1908 | 16, /* bitsize */ | |
1909 | FALSE, /* pc_relative */ | |
1910 | 0, /* bitpos */ | |
f9c6b907 | 1911 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1912 | ppc64_elf_unhandled_reloc, /* special_function */ |
1913 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1914 | FALSE, /* partial_inplace */ | |
1915 | 0, /* src_mask */ | |
1916 | 0xffff, /* dst_mask */ | |
1917 | FALSE), /* pcrel_offset */ | |
1918 | ||
1919 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1920 | offset to the entry relative to the TOC base (r2). */ | |
1921 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1922 | 0, /* rightshift */ |
1923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1924 | 16, /* bitsize */ | |
b34976b6 | 1925 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1926 | 0, /* bitpos */ |
1927 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1928 | ppc64_elf_unhandled_reloc, /* special_function */ |
1929 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1930 | FALSE, /* partial_inplace */ |
d006db6c | 1931 | 0, /* src_mask */ |
ad8e1ba5 | 1932 | 0xfffc, /* dst_mask */ |
b34976b6 | 1933 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1934 | |
411e1bfb AM |
1935 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1936 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1937 | 0, /* rightshift */ |
1938 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1939 | 16, /* bitsize */ | |
b34976b6 | 1940 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1941 | 0, /* bitpos */ |
1942 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1943 | ppc64_elf_unhandled_reloc, /* special_function */ |
1944 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1945 | FALSE, /* partial_inplace */ |
d006db6c | 1946 | 0, /* src_mask */ |
ad8e1ba5 | 1947 | 0xfffc, /* dst_mask */ |
b34976b6 | 1948 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1949 | |
411e1bfb AM |
1950 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1951 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1952 | 16, /* rightshift */ | |
5bd4f169 AM |
1953 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1954 | 16, /* bitsize */ | |
b34976b6 | 1955 | FALSE, /* pc_relative */ |
5bd4f169 | 1956 | 0, /* bitpos */ |
f9c6b907 | 1957 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1958 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1959 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1960 | FALSE, /* partial_inplace */ |
d006db6c | 1961 | 0, /* src_mask */ |
411e1bfb | 1962 | 0xffff, /* dst_mask */ |
b34976b6 | 1963 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1964 | |
411e1bfb AM |
1965 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1966 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1967 | 16, /* rightshift */ | |
5bd4f169 AM |
1968 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1969 | 16, /* bitsize */ | |
b34976b6 | 1970 | FALSE, /* pc_relative */ |
5bd4f169 | 1971 | 0, /* bitpos */ |
f9c6b907 | 1972 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1973 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1974 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1975 | FALSE, /* partial_inplace */ |
d006db6c | 1976 | 0, /* src_mask */ |
411e1bfb | 1977 | 0xffff, /* dst_mask */ |
b34976b6 | 1978 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1979 | |
25f23106 AM |
1980 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1981 | 0, /* rightshift */ | |
1982 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1983 | 0, /* bitsize */ | |
1984 | FALSE, /* pc_relative */ | |
1985 | 0, /* bitpos */ | |
1986 | complain_overflow_dont, /* complain_on_overflow */ | |
1987 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1988 | "R_PPC64_JMP_IREL", /* name */ | |
1989 | FALSE, /* partial_inplace */ | |
1990 | 0, /* src_mask */ | |
1991 | 0, /* dst_mask */ | |
1992 | FALSE), /* pcrel_offset */ | |
1993 | ||
e054468f AM |
1994 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1995 | 0, /* rightshift */ | |
1996 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1997 | 64, /* bitsize */ | |
1998 | FALSE, /* pc_relative */ | |
1999 | 0, /* bitpos */ | |
2000 | complain_overflow_dont, /* complain_on_overflow */ | |
2001 | bfd_elf_generic_reloc, /* special_function */ | |
2002 | "R_PPC64_IRELATIVE", /* name */ | |
2003 | FALSE, /* partial_inplace */ | |
2004 | 0, /* src_mask */ | |
2005 | ONES (64), /* dst_mask */ | |
2006 | FALSE), /* pcrel_offset */ | |
2007 | ||
25f23106 AM |
2008 | /* A 16 bit relative relocation. */ |
2009 | HOWTO (R_PPC64_REL16, /* type */ | |
2010 | 0, /* rightshift */ | |
2011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2012 | 16, /* bitsize */ | |
2013 | TRUE, /* pc_relative */ | |
2014 | 0, /* bitpos */ | |
b80eed39 | 2015 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2016 | bfd_elf_generic_reloc, /* special_function */ |
2017 | "R_PPC64_REL16", /* name */ | |
2018 | FALSE, /* partial_inplace */ | |
2019 | 0, /* src_mask */ | |
2020 | 0xffff, /* dst_mask */ | |
2021 | TRUE), /* pcrel_offset */ | |
2022 | ||
2023 | /* A 16 bit relative relocation without overflow. */ | |
2024 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
2025 | 0, /* rightshift */ | |
2026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2027 | 16, /* bitsize */ | |
2028 | TRUE, /* pc_relative */ | |
2029 | 0, /* bitpos */ | |
2030 | complain_overflow_dont,/* complain_on_overflow */ | |
2031 | bfd_elf_generic_reloc, /* special_function */ | |
2032 | "R_PPC64_REL16_LO", /* name */ | |
2033 | FALSE, /* partial_inplace */ | |
2034 | 0, /* src_mask */ | |
2035 | 0xffff, /* dst_mask */ | |
2036 | TRUE), /* pcrel_offset */ | |
2037 | ||
2038 | /* The high order 16 bits of a relative address. */ | |
2039 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
2040 | 16, /* rightshift */ | |
2041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2042 | 16, /* bitsize */ | |
2043 | TRUE, /* pc_relative */ | |
2044 | 0, /* bitpos */ | |
f9c6b907 | 2045 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2046 | bfd_elf_generic_reloc, /* special_function */ |
2047 | "R_PPC64_REL16_HI", /* name */ | |
2048 | FALSE, /* partial_inplace */ | |
2049 | 0, /* src_mask */ | |
2050 | 0xffff, /* dst_mask */ | |
2051 | TRUE), /* pcrel_offset */ | |
2052 | ||
2053 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2054 | the low 16 bits, treated as a signed number, is negative. */ | |
2055 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2056 | 16, /* rightshift */ | |
2057 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2058 | 16, /* bitsize */ | |
2059 | TRUE, /* pc_relative */ | |
2060 | 0, /* bitpos */ | |
f9c6b907 | 2061 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2062 | ppc64_elf_ha_reloc, /* special_function */ |
2063 | "R_PPC64_REL16_HA", /* name */ | |
2064 | FALSE, /* partial_inplace */ | |
2065 | 0, /* src_mask */ | |
2066 | 0xffff, /* dst_mask */ | |
2067 | TRUE), /* pcrel_offset */ | |
2068 | ||
a680de9a PB |
2069 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
2070 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
2071 | 16, /* rightshift */ | |
2072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2073 | 16, /* bitsize */ | |
2074 | TRUE, /* pc_relative */ | |
2075 | 0, /* bitpos */ | |
2076 | complain_overflow_signed, /* complain_on_overflow */ | |
2077 | ppc64_elf_ha_reloc, /* special_function */ | |
2078 | "R_PPC64_REL16DX_HA", /* name */ | |
2079 | FALSE, /* partial_inplace */ | |
2080 | 0, /* src_mask */ | |
2081 | 0x1fffc1, /* dst_mask */ | |
2082 | TRUE), /* pcrel_offset */ | |
2083 | ||
7ba71655 AM |
2084 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
2085 | HOWTO (R_PPC64_16DX_HA, /* type */ | |
2086 | 16, /* rightshift */ | |
2087 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2088 | 16, /* bitsize */ | |
2089 | FALSE, /* pc_relative */ | |
2090 | 0, /* bitpos */ | |
2091 | complain_overflow_signed, /* complain_on_overflow */ | |
2092 | ppc64_elf_ha_reloc, /* special_function */ | |
2093 | "R_PPC64_16DX_HA", /* name */ | |
2094 | FALSE, /* partial_inplace */ | |
2095 | 0, /* src_mask */ | |
2096 | 0x1fffc1, /* dst_mask */ | |
2097 | FALSE), /* pcrel_offset */ | |
2098 | ||
f9c6b907 AM |
2099 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2100 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2101 | 16, /* rightshift */ | |
2102 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2103 | 16, /* bitsize */ | |
2104 | FALSE, /* pc_relative */ | |
2105 | 0, /* bitpos */ | |
2106 | complain_overflow_dont, /* complain_on_overflow */ | |
2107 | bfd_elf_generic_reloc, /* special_function */ | |
2108 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2109 | FALSE, /* partial_inplace */ | |
2110 | 0, /* src_mask */ | |
2111 | 0xffff, /* dst_mask */ | |
2112 | FALSE), /* pcrel_offset */ | |
2113 | ||
2114 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2115 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2116 | 16, /* rightshift */ | |
2117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2118 | 16, /* bitsize */ | |
2119 | FALSE, /* pc_relative */ | |
2120 | 0, /* bitpos */ | |
2121 | complain_overflow_dont, /* complain_on_overflow */ | |
2122 | ppc64_elf_ha_reloc, /* special_function */ | |
2123 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2124 | FALSE, /* partial_inplace */ | |
2125 | 0, /* src_mask */ | |
2126 | 0xffff, /* dst_mask */ | |
2127 | FALSE), /* pcrel_offset */ | |
2128 | ||
2129 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2130 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2131 | 16, /* rightshift */ | |
2132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2133 | 16, /* bitsize */ | |
2134 | FALSE, /* pc_relative */ | |
2135 | 0, /* bitpos */ | |
2136 | complain_overflow_dont, /* complain_on_overflow */ | |
2137 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2138 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2139 | FALSE, /* partial_inplace */ | |
2140 | 0, /* src_mask */ | |
2141 | 0xffff, /* dst_mask */ | |
2142 | FALSE), /* pcrel_offset */ | |
2143 | ||
2144 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2145 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2146 | 16, /* rightshift */ | |
2147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2148 | 16, /* bitsize */ | |
2149 | FALSE, /* pc_relative */ | |
2150 | 0, /* bitpos */ | |
2151 | complain_overflow_dont, /* complain_on_overflow */ | |
2152 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2153 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2154 | FALSE, /* partial_inplace */ | |
2155 | 0, /* src_mask */ | |
2156 | 0xffff, /* dst_mask */ | |
2157 | FALSE), /* pcrel_offset */ | |
2158 | ||
2159 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2160 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2161 | 16, /* rightshift */ | |
2162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2163 | 16, /* bitsize */ | |
2164 | FALSE, /* pc_relative */ | |
2165 | 0, /* bitpos */ | |
2166 | complain_overflow_dont, /* complain_on_overflow */ | |
2167 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2168 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2169 | FALSE, /* partial_inplace */ | |
2170 | 0, /* src_mask */ | |
2171 | 0xffff, /* dst_mask */ | |
2172 | FALSE), /* pcrel_offset */ | |
2173 | ||
2174 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2175 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2176 | 16, /* rightshift */ | |
2177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2178 | 16, /* bitsize */ | |
2179 | FALSE, /* pc_relative */ | |
2180 | 0, /* bitpos */ | |
2181 | complain_overflow_dont, /* complain_on_overflow */ | |
2182 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2183 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2184 | FALSE, /* partial_inplace */ | |
2185 | 0, /* src_mask */ | |
2186 | 0xffff, /* dst_mask */ | |
2187 | FALSE), /* pcrel_offset */ | |
2188 | ||
006589cf AM |
2189 | /* Marker reloc on ELFv2 large-model function entry. */ |
2190 | HOWTO (R_PPC64_ENTRY, | |
2191 | 0, /* rightshift */ | |
2192 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2193 | 32, /* bitsize */ | |
2194 | FALSE, /* pc_relative */ | |
2195 | 0, /* bitpos */ | |
2196 | complain_overflow_dont, /* complain_on_overflow */ | |
2197 | bfd_elf_generic_reloc, /* special_function */ | |
2198 | "R_PPC64_ENTRY", /* name */ | |
2199 | FALSE, /* partial_inplace */ | |
2200 | 0, /* src_mask */ | |
2201 | 0, /* dst_mask */ | |
2202 | FALSE), /* pcrel_offset */ | |
2203 | ||
45965137 AM |
2204 | /* Like ADDR64, but use local entry point of function. */ |
2205 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2206 | 0, /* rightshift */ | |
2207 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2208 | 64, /* bitsize */ | |
2209 | FALSE, /* pc_relative */ | |
2210 | 0, /* bitpos */ | |
2211 | complain_overflow_dont, /* complain_on_overflow */ | |
2212 | bfd_elf_generic_reloc, /* special_function */ | |
2213 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2214 | FALSE, /* partial_inplace */ | |
2215 | 0, /* src_mask */ | |
2216 | ONES (64), /* dst_mask */ | |
2217 | FALSE), /* pcrel_offset */ | |
2218 | ||
5bd4f169 AM |
2219 | /* GNU extension to record C++ vtable hierarchy. */ |
2220 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2221 | 0, /* rightshift */ | |
2222 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2223 | 0, /* bitsize */ | |
b34976b6 | 2224 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2225 | 0, /* bitpos */ |
2226 | complain_overflow_dont, /* complain_on_overflow */ | |
2227 | NULL, /* special_function */ | |
2228 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2229 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2230 | 0, /* src_mask */ |
2231 | 0, /* dst_mask */ | |
b34976b6 | 2232 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2233 | |
2234 | /* GNU extension to record C++ vtable member usage. */ | |
2235 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2236 | 0, /* rightshift */ | |
2237 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2238 | 0, /* bitsize */ | |
b34976b6 | 2239 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2240 | 0, /* bitpos */ |
2241 | complain_overflow_dont, /* complain_on_overflow */ | |
2242 | NULL, /* special_function */ | |
2243 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2244 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2245 | 0, /* src_mask */ |
2246 | 0, /* dst_mask */ | |
b34976b6 | 2247 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2248 | }; |
2249 | ||
2250 | \f | |
2251 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2252 | be done. */ | |
2253 | ||
2254 | static void | |
4ce794b7 | 2255 | ppc_howto_init (void) |
5bd4f169 AM |
2256 | { |
2257 | unsigned int i, type; | |
2258 | ||
a4b6fadd | 2259 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2260 | { |
2261 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2262 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2263 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2264 | } | |
2265 | } | |
2266 | ||
2267 | static reloc_howto_type * | |
f3185997 | 2268 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 2269 | bfd_reloc_code_real_type code) |
5bd4f169 | 2270 | { |
411e1bfb | 2271 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2272 | |
2273 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2274 | /* Initialize howto table if needed. */ | |
2275 | ppc_howto_init (); | |
2276 | ||
4ce794b7 | 2277 | switch (code) |
5bd4f169 AM |
2278 | { |
2279 | default: | |
f3185997 | 2280 | /* xgettext:c-format */ |
e8f5af78 | 2281 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code); |
f3185997 | 2282 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 2283 | return NULL; |
5bd4f169 | 2284 | |
411e1bfb AM |
2285 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2286 | break; | |
2287 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2288 | break; | |
2289 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2290 | break; | |
2291 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2292 | break; | |
2293 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2294 | break; | |
2295 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2296 | break; | |
f9c6b907 AM |
2297 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2298 | break; | |
411e1bfb | 2299 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2300 | break; |
f9c6b907 AM |
2301 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2302 | break; | |
411e1bfb | 2303 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2304 | break; |
411e1bfb | 2305 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2306 | break; |
411e1bfb | 2307 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2308 | break; |
411e1bfb | 2309 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2310 | break; |
411e1bfb | 2311 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2312 | break; |
411e1bfb | 2313 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2314 | break; |
411e1bfb | 2315 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2316 | break; |
411e1bfb | 2317 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2318 | break; |
411e1bfb | 2319 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2320 | break; |
411e1bfb | 2321 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2322 | break; |
411e1bfb | 2323 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2324 | break; |
411e1bfb | 2325 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2326 | break; |
411e1bfb | 2327 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2328 | break; |
411e1bfb | 2329 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2330 | break; |
411e1bfb | 2331 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2332 | break; |
411e1bfb | 2333 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2334 | break; |
411e1bfb | 2335 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2336 | break; |
411e1bfb | 2337 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2338 | break; |
411e1bfb | 2339 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2340 | break; |
411e1bfb | 2341 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2342 | break; |
411e1bfb | 2343 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2344 | break; |
411e1bfb | 2345 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2346 | break; |
411e1bfb | 2347 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2348 | break; |
411e1bfb | 2349 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2350 | break; |
411e1bfb | 2351 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2352 | break; |
411e1bfb | 2353 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2354 | break; |
411e1bfb | 2355 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2356 | break; |
411e1bfb | 2357 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2358 | break; |
411e1bfb | 2359 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2360 | break; |
411e1bfb | 2361 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2362 | break; |
411e1bfb | 2363 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2364 | break; |
411e1bfb | 2365 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2366 | break; |
411e1bfb | 2367 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2368 | break; |
411e1bfb | 2369 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2370 | break; |
411e1bfb | 2371 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2372 | break; |
411e1bfb | 2373 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2374 | break; |
411e1bfb | 2375 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2376 | break; |
411e1bfb | 2377 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2378 | break; |
411e1bfb | 2379 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2380 | break; |
411e1bfb | 2381 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2382 | break; |
411e1bfb | 2383 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2384 | break; |
411e1bfb | 2385 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2386 | break; |
411e1bfb | 2387 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2388 | break; |
411e1bfb | 2389 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2390 | break; |
411e1bfb | 2391 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2392 | break; |
411e1bfb | 2393 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2394 | break; |
411e1bfb | 2395 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2396 | break; |
411e1bfb | 2397 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2398 | break; |
411e1bfb | 2399 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2400 | break; |
411e1bfb | 2401 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2402 | break; |
411e1bfb | 2403 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2404 | break; |
411e1bfb | 2405 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2406 | break; |
411e1bfb | 2407 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2408 | break; |
727fc41e AM |
2409 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2410 | break; | |
2411 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2412 | break; | |
411e1bfb | 2413 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2414 | break; |
411e1bfb | 2415 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2416 | break; |
411e1bfb | 2417 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2418 | break; |
411e1bfb | 2419 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2420 | break; |
f9c6b907 AM |
2421 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2422 | break; | |
411e1bfb | 2423 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2424 | break; |
f9c6b907 AM |
2425 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2426 | break; | |
411e1bfb | 2427 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2428 | break; |
411e1bfb AM |
2429 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2430 | break; | |
2431 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2432 | break; | |
2433 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2434 | break; | |
f9c6b907 AM |
2435 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2436 | break; | |
411e1bfb AM |
2437 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2438 | break; | |
f9c6b907 AM |
2439 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2440 | break; | |
411e1bfb AM |
2441 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2442 | break; | |
2443 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2444 | break; | |
2445 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2446 | break; | |
2447 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2448 | break; | |
2449 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2450 | break; | |
2451 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2452 | break; | |
2453 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2454 | break; | |
2455 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2456 | break; | |
2457 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2458 | break; | |
2459 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2460 | break; | |
2461 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2462 | break; | |
2463 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2464 | break; | |
2465 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2466 | break; | |
2467 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2468 | break; | |
2469 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2470 | break; | |
2471 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2472 | break; | |
2473 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2474 | break; | |
2475 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2476 | break; | |
2477 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2478 | break; | |
2479 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2480 | break; | |
2481 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2482 | break; | |
2483 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2484 | break; | |
2485 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2486 | break; | |
2487 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2488 | break; | |
2489 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2490 | break; | |
2491 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2492 | break; | |
2493 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2494 | break; | |
2495 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2496 | break; | |
2497 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2498 | break; | |
25f23106 AM |
2499 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2500 | break; | |
2501 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2502 | break; | |
2503 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2504 | break; | |
2505 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2506 | break; | |
7ba71655 AM |
2507 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
2508 | break; | |
a680de9a PB |
2509 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
2510 | break; | |
006589cf AM |
2511 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
2512 | break; | |
45965137 AM |
2513 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2514 | break; | |
411e1bfb AM |
2515 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2516 | break; | |
2517 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2518 | break; |
2519 | } | |
2520 | ||
4ce794b7 | 2521 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2522 | }; |
2523 | ||
157090f7 AM |
2524 | static reloc_howto_type * |
2525 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2526 | const char *r_name) | |
2527 | { | |
2528 | unsigned int i; | |
2529 | ||
a4b6fadd | 2530 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2531 | if (ppc64_elf_howto_raw[i].name != NULL |
2532 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2533 | return &ppc64_elf_howto_raw[i]; | |
2534 | ||
f3185997 | 2535 | |
157090f7 AM |
2536 | return NULL; |
2537 | } | |
2538 | ||
5bd4f169 AM |
2539 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2540 | ||
f3185997 | 2541 | static bfd_boolean |
4aef7643 | 2542 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 2543 | Elf_Internal_Rela *dst) |
5bd4f169 | 2544 | { |
65f38f15 AM |
2545 | unsigned int type; |
2546 | ||
ef60b7ff | 2547 | /* Initialize howto table if needed. */ |
5bd4f169 | 2548 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2549 | ppc_howto_init (); |
2550 | ||
65f38f15 | 2551 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2552 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 2553 | { |
695344c0 | 2554 | /* xgettext:c-format */ |
0aa13fee | 2555 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 2556 | abfd, type); |
f3185997 NC |
2557 | bfd_set_error (bfd_error_bad_value); |
2558 | return FALSE; | |
d0fb9a8d | 2559 | } |
65f38f15 | 2560 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
2561 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
2562 | { | |
2563 | /* xgettext:c-format */ | |
2564 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
2565 | abfd, type); | |
2566 | bfd_set_error (bfd_error_bad_value); | |
2567 | return FALSE; | |
2568 | } | |
2569 | ||
2570 | return TRUE; | |
5bd4f169 AM |
2571 | } |
2572 | ||
04c9666a | 2573 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2574 | |
2575 | static bfd_reloc_status_type | |
4ce794b7 AM |
2576 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2577 | void *data, asection *input_section, | |
2578 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2579 | { |
a680de9a PB |
2580 | enum elf_ppc64_reloc_type r_type; |
2581 | long insn; | |
2582 | bfd_size_type octets; | |
3de43e7b | 2583 | bfd_vma value; |
a680de9a | 2584 | |
805fc799 AM |
2585 | /* If this is a relocatable link (output_bfd test tells us), just |
2586 | call the generic function. Any adjustment will be done at final | |
2587 | link time. */ | |
2588 | if (output_bfd != NULL) | |
cedb70c5 | 2589 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2590 | input_section, output_bfd, error_message); |
2591 | ||
2592 | /* Adjust the addend for sign extension of the low 16 bits. | |
2593 | We won't actually be using the low 16 bits, so trashing them | |
2594 | doesn't matter. */ | |
2595 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
2596 | r_type = reloc_entry->howto->type; |
2597 | if (r_type != R_PPC64_REL16DX_HA) | |
2598 | return bfd_reloc_continue; | |
2599 | ||
2600 | value = 0; | |
2601 | if (!bfd_is_com_section (symbol->section)) | |
2602 | value = symbol->value; | |
2603 | value += (reloc_entry->addend | |
2604 | + symbol->section->output_offset | |
2605 | + symbol->section->output_section->vma); | |
2606 | value -= (reloc_entry->address | |
2607 | + input_section->output_offset | |
2608 | + input_section->output_section->vma); | |
3de43e7b | 2609 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
2610 | |
2611 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2612 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2613 | insn &= ~0x1fffc1; | |
3de43e7b | 2614 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 2615 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 2616 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
2617 | return bfd_reloc_overflow; |
2618 | return bfd_reloc_ok; | |
805fc799 | 2619 | } |
5bd4f169 | 2620 | |
2441e016 AM |
2621 | static bfd_reloc_status_type |
2622 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2623 | void *data, asection *input_section, | |
2624 | bfd *output_bfd, char **error_message) | |
2625 | { | |
2626 | if (output_bfd != NULL) | |
2627 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2628 | input_section, output_bfd, error_message); | |
2629 | ||
699733f6 AM |
2630 | if (strcmp (symbol->section->name, ".opd") == 0 |
2631 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2632 | { |
2633 | bfd_vma dest = opd_entry_value (symbol->section, | |
2634 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2635 | NULL, NULL, FALSE); |
2441e016 AM |
2636 | if (dest != (bfd_vma) -1) |
2637 | reloc_entry->addend = dest - (symbol->value | |
2638 | + symbol->section->output_section->vma | |
2639 | + symbol->section->output_offset); | |
2640 | } | |
810d4e75 AM |
2641 | else |
2642 | { | |
2643 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2644 | ||
2645 | if (symbol->section->owner != abfd | |
9f284bf9 | 2646 | && symbol->section->owner != NULL |
810d4e75 AM |
2647 | && abiversion (symbol->section->owner) >= 2) |
2648 | { | |
2649 | unsigned int i; | |
2650 | ||
2651 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2652 | { | |
2653 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2654 | ||
2655 | if (strcmp (symdef->name, symbol->name) == 0) | |
2656 | { | |
2657 | elfsym = (elf_symbol_type *) symdef; | |
2658 | break; | |
2659 | } | |
2660 | } | |
2661 | } | |
2662 | reloc_entry->addend | |
2663 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2664 | } | |
2441e016 AM |
2665 | return bfd_reloc_continue; |
2666 | } | |
2667 | ||
805fc799 | 2668 | static bfd_reloc_status_type |
4ce794b7 AM |
2669 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2670 | void *data, asection *input_section, | |
2671 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2672 | { |
2673 | long insn; | |
04c9666a | 2674 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2675 | bfd_size_type octets; |
794e51c0 AM |
2676 | /* Assume 'at' branch hints. */ |
2677 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2678 | |
2679 | /* If this is a relocatable link (output_bfd test tells us), just | |
2680 | call the generic function. Any adjustment will be done at final | |
2681 | link time. */ | |
5bd4f169 | 2682 | if (output_bfd != NULL) |
cedb70c5 | 2683 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2684 | input_section, output_bfd, error_message); |
2685 | ||
2686 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2687 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2688 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2689 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2690 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2691 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2692 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2693 | |
794e51c0 | 2694 | if (is_isa_v2) |
5bd4f169 | 2695 | { |
805fc799 AM |
2696 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2697 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2698 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2699 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2700 | insn |= 0x02 << 21; | |
2701 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2702 | insn |= 0x08 << 21; | |
2703 | else | |
2441e016 | 2704 | goto out; |
5bd4f169 | 2705 | } |
805fc799 AM |
2706 | else |
2707 | { | |
2708 | bfd_vma target = 0; | |
2709 | bfd_vma from; | |
5bd4f169 | 2710 | |
805fc799 AM |
2711 | if (!bfd_is_com_section (symbol->section)) |
2712 | target = symbol->value; | |
2713 | target += symbol->section->output_section->vma; | |
2714 | target += symbol->section->output_offset; | |
2715 | target += reloc_entry->addend; | |
5bd4f169 | 2716 | |
805fc799 AM |
2717 | from = (reloc_entry->address |
2718 | + input_section->output_offset | |
2719 | + input_section->output_section->vma); | |
5bd4f169 | 2720 | |
805fc799 AM |
2721 | /* Invert 'y' bit if not the default. */ |
2722 | if ((bfd_signed_vma) (target - from) < 0) | |
2723 | insn ^= 0x01 << 21; | |
2724 | } | |
4ce794b7 | 2725 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2726 | out: |
2727 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2728 | input_section, output_bfd, error_message); | |
805fc799 | 2729 | } |
5bd4f169 | 2730 | |
805fc799 | 2731 | static bfd_reloc_status_type |
4ce794b7 AM |
2732 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2733 | void *data, asection *input_section, | |
2734 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2735 | { |
2736 | /* If this is a relocatable link (output_bfd test tells us), just | |
2737 | call the generic function. Any adjustment will be done at final | |
2738 | link time. */ | |
2739 | if (output_bfd != NULL) | |
cedb70c5 | 2740 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2741 | input_section, output_bfd, error_message); |
5bd4f169 | 2742 | |
805fc799 AM |
2743 | /* Subtract the symbol section base address. */ |
2744 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2745 | return bfd_reloc_continue; |
2746 | } | |
2747 | ||
805fc799 | 2748 | static bfd_reloc_status_type |
4ce794b7 AM |
2749 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2750 | void *data, asection *input_section, | |
2751 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2752 | { |
2753 | /* If this is a relocatable link (output_bfd test tells us), just | |
2754 | call the generic function. Any adjustment will be done at final | |
2755 | link time. */ | |
2756 | if (output_bfd != NULL) | |
cedb70c5 | 2757 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2758 | input_section, output_bfd, error_message); |
2759 | ||
2760 | /* Subtract the symbol section base address. */ | |
2761 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2762 | ||
2763 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2764 | reloc_entry->addend += 0x8000; | |
2765 | return bfd_reloc_continue; | |
2766 | } | |
2767 | ||
2768 | static bfd_reloc_status_type | |
4ce794b7 AM |
2769 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2770 | void *data, asection *input_section, | |
2771 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2772 | { |
2773 | bfd_vma TOCstart; | |
2774 | ||
2775 | /* If this is a relocatable link (output_bfd test tells us), just | |
2776 | call the generic function. Any adjustment will be done at final | |
2777 | link time. */ | |
2778 | if (output_bfd != NULL) | |
cedb70c5 | 2779 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2780 | input_section, output_bfd, error_message); |
2781 | ||
2782 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2783 | if (TOCstart == 0) | |
1c865ab2 | 2784 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2785 | |
2786 | /* Subtract the TOC base address. */ | |
2787 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2788 | return bfd_reloc_continue; | |
2789 | } | |
2790 | ||
2791 | static bfd_reloc_status_type | |
4ce794b7 AM |
2792 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2793 | void *data, asection *input_section, | |
2794 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2795 | { |
2796 | bfd_vma TOCstart; | |
2797 | ||
2798 | /* If this is a relocatable link (output_bfd test tells us), just | |
2799 | call the generic function. Any adjustment will be done at final | |
2800 | link time. */ | |
2801 | if (output_bfd != NULL) | |
cedb70c5 | 2802 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2803 | input_section, output_bfd, error_message); |
2804 | ||
2805 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2806 | if (TOCstart == 0) | |
1c865ab2 | 2807 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2808 | |
2809 | /* Subtract the TOC base address. */ | |
2810 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2811 | ||
2812 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2813 | reloc_entry->addend += 0x8000; | |
2814 | return bfd_reloc_continue; | |
2815 | } | |
2816 | ||
2817 | static bfd_reloc_status_type | |
4ce794b7 AM |
2818 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2819 | void *data, asection *input_section, | |
2820 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2821 | { |
2822 | bfd_vma TOCstart; | |
2823 | bfd_size_type octets; | |
2824 | ||
2825 | /* If this is a relocatable link (output_bfd test tells us), just | |
2826 | call the generic function. Any adjustment will be done at final | |
2827 | link time. */ | |
2828 | if (output_bfd != NULL) | |
cedb70c5 | 2829 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2830 | input_section, output_bfd, error_message); |
2831 | ||
2832 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2833 | if (TOCstart == 0) | |
1c865ab2 | 2834 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2835 | |
2836 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2837 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2838 | return bfd_reloc_ok; | |
2839 | } | |
2840 | ||
2841 | static bfd_reloc_status_type | |
4ce794b7 AM |
2842 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2843 | void *data, asection *input_section, | |
2844 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2845 | { |
2846 | /* If this is a relocatable link (output_bfd test tells us), just | |
2847 | call the generic function. Any adjustment will be done at final | |
2848 | link time. */ | |
2849 | if (output_bfd != NULL) | |
cedb70c5 | 2850 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2851 | input_section, output_bfd, error_message); |
2852 | ||
2853 | if (error_message != NULL) | |
2854 | { | |
2855 | static char buf[60]; | |
2856 | sprintf (buf, "generic linker can't handle %s", | |
2857 | reloc_entry->howto->name); | |
2858 | *error_message = buf; | |
2859 | } | |
2860 | return bfd_reloc_dangerous; | |
2861 | } | |
2862 | ||
927be08e AM |
2863 | /* Track GOT entries needed for a given symbol. We might need more |
2864 | than one got entry per symbol. */ | |
2865 | struct got_entry | |
2866 | { | |
2867 | struct got_entry *next; | |
2868 | ||
2869 | /* The symbol addend that we'll be placing in the GOT. */ | |
2870 | bfd_vma addend; | |
2871 | ||
2872 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2873 | symbol referenced from different input files. This is to support | |
2874 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2875 | from one input file to another. After partitioning into TOC groups | |
2876 | we merge entries within the group. | |
2877 | ||
2878 | Point to the BFD owning this GOT entry. */ | |
2879 | bfd *owner; | |
2880 | ||
2881 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2882 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2883 | unsigned char tls_type; |
927be08e AM |
2884 | |
2885 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2886 | unsigned char is_indirect; |
927be08e AM |
2887 | |
2888 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2889 | union | |
2890 | { | |
2891 | bfd_signed_vma refcount; | |
2892 | bfd_vma offset; | |
2893 | struct got_entry *ent; | |
2894 | } got; | |
2895 | }; | |
2896 | ||
2897 | /* The same for PLT. */ | |
2898 | struct plt_entry | |
2899 | { | |
2900 | struct plt_entry *next; | |
2901 | ||
2902 | bfd_vma addend; | |
2903 | ||
2904 | union | |
2905 | { | |
2906 | bfd_signed_vma refcount; | |
2907 | bfd_vma offset; | |
2908 | } plt; | |
2909 | }; | |
2910 | ||
e717da7e AM |
2911 | struct ppc64_elf_obj_tdata |
2912 | { | |
2913 | struct elf_obj_tdata elf; | |
2914 | ||
2915 | /* Shortcuts to dynamic linker sections. */ | |
2916 | asection *got; | |
2917 | asection *relgot; | |
2918 | ||
b3fac117 AM |
2919 | /* Used during garbage collection. We attach global symbols defined |
2920 | on removed .opd entries to this section so that the sym is removed. */ | |
2921 | asection *deleted_section; | |
81688140 | 2922 | |
927be08e | 2923 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2924 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2925 | struct got_entry tlsld_got; |
8860955f | 2926 | |
729eabd5 AM |
2927 | union { |
2928 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2929 | Elf_Internal_Rela *relocs; | |
2930 | ||
2931 | /* Section contents. */ | |
2932 | bfd_byte *contents; | |
2933 | } opd; | |
d77c8a4b AM |
2934 | |
2935 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2936 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2937 | unsigned int has_small_toc_reloc : 1; |
2938 | ||
560c8763 AM |
2939 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2940 | instruction not one we handle. */ | |
2941 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2942 | }; |
2943 | ||
2944 | #define ppc64_elf_tdata(bfd) \ | |
2945 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2946 | ||
2947 | #define ppc64_tlsld_got(bfd) \ | |
2948 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2949 | ||
0c8d6e5c AM |
2950 | #define is_ppc64_elf(bfd) \ |
2951 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2952 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2953 | |
e717da7e AM |
2954 | /* Override the generic function because we store some extras. */ |
2955 | ||
2956 | static bfd_boolean | |
2957 | ppc64_elf_mkobject (bfd *abfd) | |
2958 | { | |
0ffa91dd | 2959 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2960 | PPC64_ELF_DATA); |
e717da7e AM |
2961 | } |
2962 | ||
feee612b | 2963 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 2964 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 2965 | |
b34976b6 | 2966 | static bfd_boolean |
4ce794b7 | 2967 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 2968 | { |
14b57c7c AM |
2969 | if (!abfd->arch_info->the_default) |
2970 | return TRUE; | |
2971 | ||
2972 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
2973 | { |
2974 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2975 | ||
2976 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2977 | { | |
2978 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2979 | abfd->arch_info = abfd->arch_info->next; | |
2980 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2981 | } | |
2982 | } | |
14b57c7c | 2983 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
2984 | } |
2985 | ||
d37c89e5 AM |
2986 | /* Support for core dump NOTE sections. */ |
2987 | ||
2988 | static bfd_boolean | |
2989 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2990 | { | |
eea6121a | 2991 | size_t offset, size; |
d37c89e5 AM |
2992 | |
2993 | if (note->descsz != 504) | |
2994 | return FALSE; | |
2995 | ||
2996 | /* pr_cursig */ | |
228e534f | 2997 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2998 | |
2999 | /* pr_pid */ | |
228e534f | 3000 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
3001 | |
3002 | /* pr_reg */ | |
3003 | offset = 112; | |
eea6121a | 3004 | size = 384; |
d37c89e5 AM |
3005 | |
3006 | /* Make a ".reg/999" section. */ | |
3007 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3008 | size, note->descpos + offset); |
d37c89e5 AM |
3009 | } |
3010 | ||
3011 | static bfd_boolean | |
3012 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3013 | { | |
3014 | if (note->descsz != 136) | |
3015 | return FALSE; | |
3016 | ||
228e534f | 3017 | elf_tdata (abfd)->core->pid |
bc989cdc | 3018 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 3019 | elf_tdata (abfd)->core->program |
d37c89e5 | 3020 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 3021 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
3022 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
3023 | ||
3024 | return TRUE; | |
3025 | } | |
3026 | ||
183e98be AM |
3027 | static char * |
3028 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
3029 | ...) | |
3030 | { | |
3031 | switch (note_type) | |
3032 | { | |
3033 | default: | |
3034 | return NULL; | |
3035 | ||
3036 | case NT_PRPSINFO: | |
3037 | { | |
9ef6d1e3 | 3038 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
3039 | va_list ap; |
3040 | ||
3041 | va_start (ap, note_type); | |
75cd47ed | 3042 | memset (data, 0, sizeof (data)); |
183e98be | 3043 | strncpy (data + 40, va_arg (ap, const char *), 16); |
95da9854 L |
3044 | DIAGNOSTIC_PUSH; |
3045 | /* GCC 8.1 warns about 80 equals destination size with | |
3046 | -Wstringop-truncation: | |
3047 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
3048 | */ | |
3049 | #if GCC_VERSION == 8001 | |
3050 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; | |
3051 | #endif | |
183e98be | 3052 | strncpy (data + 56, va_arg (ap, const char *), 80); |
95da9854 | 3053 | DIAGNOSTIC_POP; |
183e98be AM |
3054 | va_end (ap); |
3055 | return elfcore_write_note (abfd, buf, bufsiz, | |
3056 | "CORE", note_type, data, sizeof (data)); | |
3057 | } | |
3058 | ||
3059 | case NT_PRSTATUS: | |
3060 | { | |
3061 | char data[504]; | |
3062 | va_list ap; | |
3063 | long pid; | |
3064 | int cursig; | |
3065 | const void *greg; | |
3066 | ||
3067 | va_start (ap, note_type); | |
3068 | memset (data, 0, 112); | |
3069 | pid = va_arg (ap, long); | |
3070 | bfd_put_32 (abfd, pid, data + 32); | |
3071 | cursig = va_arg (ap, int); | |
3072 | bfd_put_16 (abfd, cursig, data + 12); | |
3073 | greg = va_arg (ap, const void *); | |
3074 | memcpy (data + 112, greg, 384); | |
3075 | memset (data + 496, 0, 8); | |
3076 | va_end (ap); | |
3077 | return elfcore_write_note (abfd, buf, bufsiz, | |
3078 | "CORE", note_type, data, sizeof (data)); | |
3079 | } | |
3080 | } | |
3081 | } | |
3082 | ||
5d35169e AM |
3083 | /* Add extra PPC sections. */ |
3084 | ||
b35d266b | 3085 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 3086 | { |
07d6d2b8 AM |
3087 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3088 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3089 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
3090 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3091 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3092 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 3093 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
3094 | }; |
3095 | ||
7c8fe5c4 AM |
3096 | enum _ppc64_sec_type { |
3097 | sec_normal = 0, | |
3098 | sec_opd = 1, | |
3099 | sec_toc = 2 | |
3100 | }; | |
3101 | ||
f0abc2a1 AM |
3102 | struct _ppc64_elf_section_data |
3103 | { | |
3104 | struct bfd_elf_section_data elf; | |
411e1bfb | 3105 | |
f0abc2a1 AM |
3106 | union |
3107 | { | |
51aecdc5 AM |
3108 | /* An array with one entry for each opd function descriptor, |
3109 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3110 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3111 | struct _opd_sec_data |
3112 | { | |
3113 | /* Points to the function code section for local opd entries. */ | |
3114 | asection **func_sec; | |
3115 | ||
3116 | /* After editing .opd, adjust references to opd local syms. */ | |
3117 | long *adjust; | |
3118 | } opd; | |
7c8fe5c4 | 3119 | |
3a71aa26 AM |
3120 | /* An array for toc sections, indexed by offset/8. */ |
3121 | struct _toc_sec_data | |
3122 | { | |
3123 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3124 | unsigned *symndx; | |
3125 | ||
3126 | /* And the relocation addend. */ | |
3127 | bfd_vma *add; | |
3128 | } toc; | |
7c8fe5c4 AM |
3129 | } u; |
3130 | ||
3131 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3132 | |
7c8fe5c4 AM |
3133 | /* Flag set when small branches are detected. Used to |
3134 | select suitable defaults for the stub group size. */ | |
3135 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
3136 | |
3137 | /* Flag set when PLTCALL relocs are detected. */ | |
3138 | unsigned int has_pltcall:1; | |
f0abc2a1 AM |
3139 | }; |
3140 | ||
3141 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3142 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3143 | |
3144 | static bfd_boolean | |
4ce794b7 | 3145 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3146 | { |
f592407e AM |
3147 | if (!sec->used_by_bfd) |
3148 | { | |
3149 | struct _ppc64_elf_section_data *sdata; | |
3150 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3151 | |
f592407e AM |
3152 | sdata = bfd_zalloc (abfd, amt); |
3153 | if (sdata == NULL) | |
3154 | return FALSE; | |
3155 | sec->used_by_bfd = sdata; | |
3156 | } | |
f0abc2a1 AM |
3157 | |
3158 | return _bfd_elf_new_section_hook (abfd, sec); | |
3159 | } | |
4025353c | 3160 | |
74f0fb50 | 3161 | static struct _opd_sec_data * |
4025353c AM |
3162 | get_opd_info (asection * sec) |
3163 | { | |
3164 | if (sec != NULL | |
3165 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3166 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3167 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3168 | return NULL; |
3169 | } | |
90e3cdf2 JJ |
3170 | \f |
3171 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 3172 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 3173 | static asection *synthetic_opd; |
90e3cdf2 | 3174 | |
699733f6 | 3175 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3176 | |
3177 | static int | |
3178 | compare_symbols (const void *ap, const void *bp) | |
3179 | { | |
3180 | const asymbol *a = * (const asymbol **) ap; | |
3181 | const asymbol *b = * (const asymbol **) bp; | |
3182 | ||
699733f6 AM |
3183 | /* Section symbols first. */ |
3184 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3185 | return -1; |
699733f6 | 3186 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3187 | return 1; |
3188 | ||
699733f6 | 3189 | /* then .opd symbols. */ |
cd285db5 AM |
3190 | if (synthetic_opd != NULL) |
3191 | { | |
3192 | if (strcmp (a->section->name, ".opd") == 0 | |
3193 | && strcmp (b->section->name, ".opd") != 0) | |
3194 | return -1; | |
3195 | if (strcmp (a->section->name, ".opd") != 0 | |
3196 | && strcmp (b->section->name, ".opd") == 0) | |
3197 | return 1; | |
3198 | } | |
90e3cdf2 | 3199 | |
699733f6 | 3200 | /* then other code symbols. */ |
90e3cdf2 JJ |
3201 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3202 | == (SEC_CODE | SEC_ALLOC) | |
3203 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3204 | != (SEC_CODE | SEC_ALLOC)) | |
3205 | return -1; | |
3206 | ||
3207 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3208 | != (SEC_CODE | SEC_ALLOC) | |
3209 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3210 | == (SEC_CODE | SEC_ALLOC)) | |
3211 | return 1; | |
3212 | ||
3213 | if (synthetic_relocatable) | |
3214 | { | |
3215 | if (a->section->id < b->section->id) | |
3216 | return -1; | |
3217 | ||
3218 | if (a->section->id > b->section->id) | |
3219 | return 1; | |
3220 | } | |
3221 | ||
3222 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3223 | return -1; | |
3224 | ||
3225 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3226 | return 1; | |
3227 | ||
4d35a0aa AM |
3228 | /* For syms with the same value, prefer strong dynamic global function |
3229 | syms over other syms. */ | |
3230 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3231 | return -1; | |
3232 | ||
3233 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3234 | return 1; | |
3235 | ||
3236 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3237 | return -1; | |
3238 | ||
3239 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3240 | return 1; | |
3241 | ||
3242 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3243 | return -1; | |
3244 | ||
3245 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3246 | return 1; | |
3247 | ||
3248 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3249 | return -1; | |
3250 | ||
3251 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3252 | return 1; | |
3253 | ||
aaed6f5b | 3254 | return a > b; |
90e3cdf2 JJ |
3255 | } |
3256 | ||
699733f6 | 3257 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3258 | |
699733f6 | 3259 | static asymbol * |
7292b3ac | 3260 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3261 | { |
699733f6 | 3262 | long mid; |
90e3cdf2 | 3263 | |
7292b3ac | 3264 | if (id == (unsigned) -1) |
699733f6 AM |
3265 | { |
3266 | while (lo < hi) | |
3267 | { | |
3268 | mid = (lo + hi) >> 1; | |
3269 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3270 | lo = mid + 1; | |
3271 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3272 | hi = mid; | |
3273 | else | |
3274 | return syms[mid]; | |
3275 | } | |
3276 | } | |
3277 | else | |
3278 | { | |
3279 | while (lo < hi) | |
3280 | { | |
3281 | mid = (lo + hi) >> 1; | |
3282 | if (syms[mid]->section->id < id) | |
3283 | lo = mid + 1; | |
3284 | else if (syms[mid]->section->id > id) | |
3285 | hi = mid; | |
3286 | else if (syms[mid]->value < value) | |
3287 | lo = mid + 1; | |
3288 | else if (syms[mid]->value > value) | |
3289 | hi = mid; | |
3290 | else | |
3291 | return syms[mid]; | |
3292 | } | |
3293 | } | |
3294 | return NULL; | |
90e3cdf2 JJ |
3295 | } |
3296 | ||
468392fb AM |
3297 | static bfd_boolean |
3298 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3299 | { | |
3300 | bfd_vma vma = *(bfd_vma *) ptr; | |
3301 | return ((section->flags & SEC_ALLOC) != 0 | |
3302 | && section->vma <= vma | |
3303 | && vma < section->vma + section->size); | |
3304 | } | |
3305 | ||
699733f6 | 3306 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3307 | entry syms. Also generate @plt symbols for the glink branch table. |
3308 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3309 | |
3310 | static long | |
a7535cf3 AM |
3311 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3312 | long static_count, asymbol **static_syms, | |
3313 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3314 | asymbol **ret) |
90e3cdf2 JJ |
3315 | { |
3316 | asymbol *s; | |
0ccf57bd | 3317 | size_t i, j, count; |
90e3cdf2 | 3318 | char *names; |
0ccf57bd | 3319 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3320 | asection *opd = NULL; |
90e3cdf2 | 3321 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3322 | asymbol **syms; |
ee67d69a | 3323 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3324 | |
3325 | *ret = NULL; | |
3326 | ||
ee67d69a AM |
3327 | if (abi < 2) |
3328 | { | |
3329 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3330 | if (opd == NULL && abi == 1) | |
3331 | return 0; | |
3332 | } | |
90e3cdf2 | 3333 | |
a5259595 AM |
3334 | syms = NULL; |
3335 | codesecsym = 0; | |
3336 | codesecsymend = 0; | |
3337 | secsymend = 0; | |
3338 | opdsymend = 0; | |
3339 | symcount = 0; | |
3340 | if (opd != NULL) | |
c9727e01 | 3341 | { |
a5259595 AM |
3342 | symcount = static_count; |
3343 | if (!relocatable) | |
3344 | symcount += dyn_count; | |
3345 | if (symcount == 0) | |
3346 | return 0; | |
c9727e01 | 3347 | |
a5259595 AM |
3348 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3349 | if (syms == NULL) | |
3350 | return -1; | |
90e3cdf2 | 3351 | |
a5259595 AM |
3352 | if (!relocatable && static_count != 0 && dyn_count != 0) |
3353 | { | |
3354 | /* Use both symbol tables. */ | |
3355 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3356 | memcpy (syms + static_count, dyn_syms, | |
3357 | (dyn_count + 1) * sizeof (*syms)); | |
3358 | } | |
3359 | else if (!relocatable && static_count == 0) | |
3360 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3361 | else | |
3362 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 3363 | |
0ccf57bd AM |
3364 | /* Trim uninteresting symbols. Interesting symbols are section, |
3365 | function, and notype symbols. */ | |
3366 | for (i = 0, j = 0; i < symcount; ++i) | |
3367 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
3368 | | BSF_RELC | BSF_SRELC)) == 0) | |
3369 | syms[j++] = syms[i]; | |
3370 | symcount = j; | |
3371 | ||
a5259595 AM |
3372 | synthetic_relocatable = relocatable; |
3373 | synthetic_opd = opd; | |
3374 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 3375 | |
a5259595 AM |
3376 | if (!relocatable && symcount > 1) |
3377 | { | |
bfa5bd2a PA |
3378 | /* Trim duplicate syms, since we may have merged the normal |
3379 | and dynamic symbols. Actually, we only care about syms | |
3380 | that have different values, so trim any with the same | |
3381 | value. Don't consider ifunc and ifunc resolver symbols | |
3382 | duplicates however, because GDB wants to know whether a | |
3383 | text symbol is an ifunc resolver. */ | |
a5259595 | 3384 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
3385 | { |
3386 | const asymbol *s0 = syms[i - 1]; | |
3387 | const asymbol *s1 = syms[i]; | |
3388 | ||
3389 | if ((s0->value + s0->section->vma | |
3390 | != s1->value + s1->section->vma) | |
3391 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
3392 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
3393 | syms[j++] = syms[i]; | |
3394 | } | |
a5259595 AM |
3395 | symcount = j; |
3396 | } | |
699733f6 | 3397 | |
a5259595 AM |
3398 | i = 0; |
3399 | /* Note that here and in compare_symbols we can't compare opd and | |
3400 | sym->section directly. With separate debug info files, the | |
3401 | symbols will be extracted from the debug file while abfd passed | |
3402 | to this function is the real binary. */ | |
0ccf57bd | 3403 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
3404 | ++i; |
3405 | codesecsym = i; | |
3406 | ||
3407 | for (; i < symcount; ++i) | |
3408 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
3409 | | SEC_THREAD_LOCAL)) | |
3410 | != (SEC_CODE | SEC_ALLOC)) | |
3411 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3412 | break; | |
3413 | codesecsymend = i; | |
3414 | ||
3415 | for (; i < symcount; ++i) | |
3416 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3417 | break; | |
3418 | secsymend = i; | |
3419 | ||
3420 | for (; i < symcount; ++i) | |
3421 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
3422 | break; | |
3423 | opdsymend = i; | |
3424 | ||
3425 | for (; i < symcount; ++i) | |
3426 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3427 | != (SEC_CODE | SEC_ALLOC)) | |
3428 | break; | |
3429 | symcount = i; | |
3430 | } | |
c9727e01 | 3431 | count = 0; |
90e3cdf2 | 3432 | |
699733f6 | 3433 | if (relocatable) |
90e3cdf2 | 3434 | { |
699733f6 AM |
3435 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3436 | arelent *r; | |
3437 | size_t size; | |
0ccf57bd | 3438 | size_t relcount; |
90e3cdf2 | 3439 | |
468392fb AM |
3440 | if (opdsymend == secsymend) |
3441 | goto done; | |
3442 | ||
699733f6 | 3443 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3444 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3445 | if (relcount == 0) |
c9727e01 | 3446 | goto done; |
90e3cdf2 | 3447 | |
7356fed5 AM |
3448 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3449 | { | |
3450 | count = -1; | |
3451 | goto done; | |
3452 | } | |
3453 | ||
699733f6 | 3454 | size = 0; |
595da8c5 | 3455 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3456 | { |
3457 | asymbol *sym; | |
90e3cdf2 | 3458 | |
595da8c5 | 3459 | while (r < opd->relocation + relcount |
699733f6 AM |
3460 | && r->address < syms[i]->value + opd->vma) |
3461 | ++r; | |
90e3cdf2 | 3462 | |
595da8c5 | 3463 | if (r == opd->relocation + relcount) |
699733f6 | 3464 | break; |
90e3cdf2 | 3465 | |
699733f6 AM |
3466 | if (r->address != syms[i]->value + opd->vma) |
3467 | continue; | |
90e3cdf2 | 3468 | |
699733f6 AM |
3469 | if (r->howto->type != R_PPC64_ADDR64) |
3470 | continue; | |
90e3cdf2 | 3471 | |
699733f6 AM |
3472 | sym = *r->sym_ptr_ptr; |
3473 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3474 | sym->section->id, sym->value + r->addend)) | |
3475 | { | |
3476 | ++count; | |
3477 | size += sizeof (asymbol); | |
3478 | size += strlen (syms[i]->name) + 2; | |
3479 | } | |
3480 | } | |
90e3cdf2 | 3481 | |
c4b0b099 AM |
3482 | if (size == 0) |
3483 | goto done; | |
699733f6 AM |
3484 | s = *ret = bfd_malloc (size); |
3485 | if (s == NULL) | |
3486 | { | |
7356fed5 | 3487 | count = -1; |
c9727e01 | 3488 | goto done; |
699733f6 | 3489 | } |
90e3cdf2 | 3490 | |
699733f6 | 3491 | names = (char *) (s + count); |
90e3cdf2 | 3492 | |
595da8c5 | 3493 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3494 | { |
699733f6 | 3495 | asymbol *sym; |
90e3cdf2 | 3496 | |
595da8c5 | 3497 | while (r < opd->relocation + relcount |
699733f6 AM |
3498 | && r->address < syms[i]->value + opd->vma) |
3499 | ++r; | |
90e3cdf2 | 3500 | |
595da8c5 | 3501 | if (r == opd->relocation + relcount) |
699733f6 AM |
3502 | break; |
3503 | ||
3504 | if (r->address != syms[i]->value + opd->vma) | |
3505 | continue; | |
3506 | ||
3507 | if (r->howto->type != R_PPC64_ADDR64) | |
3508 | continue; | |
90e3cdf2 | 3509 | |
699733f6 AM |
3510 | sym = *r->sym_ptr_ptr; |
3511 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3512 | sym->section->id, sym->value + r->addend)) | |
3513 | { | |
3514 | size_t len; | |
3515 | ||
3516 | *s = *syms[i]; | |
6ba2a415 | 3517 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3518 | s->section = sym->section; |
3519 | s->value = sym->value + r->addend; | |
3520 | s->name = names; | |
3521 | *names++ = '.'; | |
3522 | len = strlen (syms[i]->name); | |
3523 | memcpy (names, syms[i]->name, len + 1); | |
3524 | names += len + 1; | |
6f610d07 UW |
3525 | /* Have udata.p point back to the original symbol this |
3526 | synthetic symbol was derived from. */ | |
3527 | s->udata.p = syms[i]; | |
699733f6 AM |
3528 | s++; |
3529 | } | |
3530 | } | |
3531 | } | |
3532 | else | |
90e3cdf2 | 3533 | { |
468392fb | 3534 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3535 | bfd_byte *contents = NULL; |
699733f6 | 3536 | size_t size; |
0ccf57bd | 3537 | size_t plt_count = 0; |
468392fb AM |
3538 | bfd_vma glink_vma = 0, resolv_vma = 0; |
3539 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3540 | arelent *p; | |
90e3cdf2 | 3541 | |
ee67d69a | 3542 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3543 | { |
c4b0b099 AM |
3544 | free_contents_and_exit_err: |
3545 | count = -1; | |
ee67d69a | 3546 | free_contents_and_exit: |
699733f6 | 3547 | if (contents) |
ee67d69a | 3548 | free (contents); |
c9727e01 | 3549 | goto done; |
699733f6 | 3550 | } |
90e3cdf2 | 3551 | |
699733f6 AM |
3552 | size = 0; |
3553 | for (i = secsymend; i < opdsymend; ++i) | |
3554 | { | |
3555 | bfd_vma ent; | |
90e3cdf2 | 3556 | |
5ef11c02 AM |
3557 | /* Ignore bogus symbols. */ |
3558 | if (syms[i]->value > opd->size - 8) | |
3559 | continue; | |
3560 | ||
699733f6 AM |
3561 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3562 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3563 | { | |
3564 | ++count; | |
3565 | size += sizeof (asymbol); | |
3566 | size += strlen (syms[i]->name) + 2; | |
3567 | } | |
3568 | } | |
90e3cdf2 | 3569 | |
468392fb | 3570 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3571 | if (dyn_count != 0 |
3572 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3573 | { |
3574 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3575 | size_t extdynsize; | |
3576 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3577 | ||
3578 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3579 | goto free_contents_and_exit_err; |
468392fb AM |
3580 | |
3581 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3582 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3583 | ||
3584 | extdyn = dynbuf; | |
3585 | extdynend = extdyn + dynamic->size; | |
3586 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3587 | { | |
3588 | Elf_Internal_Dyn dyn; | |
3589 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3590 | ||
3591 | if (dyn.d_tag == DT_NULL) | |
3592 | break; | |
3593 | ||
3594 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3595 | { | |
9e390558 AM |
3596 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
3597 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
3598 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
3599 | /* The .glink section usually does not survive the final |
3600 | link; search for the section (usually .text) where the | |
3601 | glink stubs now reside. */ | |
3602 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3603 | &glink_vma); | |
3604 | break; | |
3605 | } | |
3606 | } | |
3607 | ||
3608 | free (dynbuf); | |
3609 | } | |
3610 | ||
3611 | if (glink != NULL) | |
3612 | { | |
3613 | /* Determine __glink trampoline by reading the relative branch | |
3614 | from the first glink stub. */ | |
3615 | bfd_byte buf[4]; | |
b9e5796b AM |
3616 | unsigned int off = 0; |
3617 | ||
3618 | while (bfd_get_section_contents (abfd, glink, buf, | |
3619 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3620 | { |
3621 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3622 | insn ^= B_DOT; | |
3623 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3624 | { |
3625 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3626 | break; | |
3627 | } | |
3628 | off += 4; | |
3629 | if (off > 4) | |
3630 | break; | |
468392fb AM |
3631 | } |
3632 | ||
3633 | if (resolv_vma) | |
3634 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3635 | |
066ee829 AM |
3636 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3637 | if (relplt != NULL) | |
3638 | { | |
3639 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3640 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3641 | goto free_contents_and_exit_err; |
68ffbac6 | 3642 | |
066ee829 AM |
3643 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3644 | size += plt_count * sizeof (asymbol); | |
468392fb | 3645 | |
066ee829 AM |
3646 | p = relplt->relocation; |
3647 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3648 | { |
3649 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3650 | if (p->addend != 0) | |
3651 | size += sizeof ("+0x") - 1 + 16; | |
3652 | } | |
066ee829 | 3653 | } |
468392fb AM |
3654 | } |
3655 | ||
c4b0b099 AM |
3656 | if (size == 0) |
3657 | goto free_contents_and_exit; | |
699733f6 AM |
3658 | s = *ret = bfd_malloc (size); |
3659 | if (s == NULL) | |
c4b0b099 | 3660 | goto free_contents_and_exit_err; |
90e3cdf2 | 3661 | |
468392fb | 3662 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3663 | |
699733f6 | 3664 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3665 | { |
699733f6 | 3666 | bfd_vma ent; |
90e3cdf2 | 3667 | |
5ef11c02 AM |
3668 | if (syms[i]->value > opd->size - 8) |
3669 | continue; | |
3670 | ||
699733f6 AM |
3671 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3672 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3673 | { |
0ccf57bd | 3674 | size_t lo, hi; |
699733f6 | 3675 | size_t len; |
c9727e01 | 3676 | asection *sec = abfd->sections; |
90e3cdf2 | 3677 | |
699733f6 AM |
3678 | *s = *syms[i]; |
3679 | lo = codesecsym; | |
3680 | hi = codesecsymend; | |
3681 | while (lo < hi) | |
3682 | { | |
0ccf57bd | 3683 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
3684 | if (syms[mid]->section->vma < ent) |
3685 | lo = mid + 1; | |
3686 | else if (syms[mid]->section->vma > ent) | |
3687 | hi = mid; | |
3688 | else | |
c9727e01 AM |
3689 | { |
3690 | sec = syms[mid]->section; | |
3691 | break; | |
3692 | } | |
699733f6 AM |
3693 | } |
3694 | ||
c9727e01 | 3695 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3696 | sec = syms[lo - 1]->section; |
699733f6 AM |
3697 | |
3698 | for (; sec != NULL; sec = sec->next) | |
3699 | { | |
3700 | if (sec->vma > ent) | |
3701 | break; | |
63524580 JK |
3702 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3703 | info file. */ | |
3704 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3705 | break; |
3706 | if ((sec->flags & SEC_CODE) != 0) | |
3707 | s->section = sec; | |
3708 | } | |
6ba2a415 | 3709 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3710 | s->value = ent - s->section->vma; |
3711 | s->name = names; | |
3712 | *names++ = '.'; | |
3713 | len = strlen (syms[i]->name); | |
3714 | memcpy (names, syms[i]->name, len + 1); | |
3715 | names += len + 1; | |
6f610d07 UW |
3716 | /* Have udata.p point back to the original symbol this |
3717 | synthetic symbol was derived from. */ | |
3718 | s->udata.p = syms[i]; | |
699733f6 | 3719 | s++; |
90e3cdf2 | 3720 | } |
90e3cdf2 | 3721 | } |
699733f6 | 3722 | free (contents); |
468392fb AM |
3723 | |
3724 | if (glink != NULL && relplt != NULL) | |
3725 | { | |
3726 | if (resolv_vma) | |
3727 | { | |
3728 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3729 | memset (s, 0, sizeof *s); |
468392fb | 3730 | s->the_bfd = abfd; |
6ba2a415 | 3731 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3732 | s->section = glink; |
3733 | s->value = resolv_vma - glink->vma; | |
3734 | s->name = names; | |
3735 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3736 | names += sizeof ("__glink_PLTresolve"); | |
3737 | s++; | |
3738 | count++; | |
3739 | } | |
3740 | ||
3741 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3742 | stub rather than on the glink branch table entry. The | |
3743 | objdump disassembler would then use a sensible symbol | |
3744 | name on plt calls. The difficulty in doing so is | |
3745 | a) finding the stubs, and, | |
3746 | b) matching stubs against plt entries, and, | |
3747 | c) there can be multiple stubs for a given plt entry. | |
3748 | ||
3749 | Solving (a) could be done by code scanning, but older | |
3750 | ppc64 binaries used different stubs to current code. | |
3751 | (b) is the tricky one since you need to known the toc | |
3752 | pointer for at least one function that uses a pic stub to | |
3753 | be able to calculate the plt address referenced. | |
3754 | (c) means gdb would need to set multiple breakpoints (or | |
3755 | find the glink branch itself) when setting breakpoints | |
3756 | for pending shared library loads. */ | |
3757 | p = relplt->relocation; | |
3758 | for (i = 0; i < plt_count; i++, p++) | |
3759 | { | |
3760 | size_t len; | |
3761 | ||
3762 | *s = **p->sym_ptr_ptr; | |
3763 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3764 | we are defining a symbol, ensure one of them is set. */ | |
3765 | if ((s->flags & BSF_LOCAL) == 0) | |
3766 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3767 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3768 | s->section = glink; |
3769 | s->value = glink_vma - glink->vma; | |
3770 | s->name = names; | |
3771 | s->udata.p = NULL; | |
3772 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3773 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3774 | names += len; | |
e054468f AM |
3775 | if (p->addend != 0) |
3776 | { | |
3777 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3778 | names += sizeof ("+0x") - 1; | |
3779 | bfd_sprintf_vma (abfd, names, p->addend); | |
3780 | names += strlen (names); | |
3781 | } | |
468392fb AM |
3782 | memcpy (names, "@plt", sizeof ("@plt")); |
3783 | names += sizeof ("@plt"); | |
3784 | s++; | |
b9e5796b AM |
3785 | if (abi < 2) |
3786 | { | |
3787 | glink_vma += 8; | |
3788 | if (i >= 0x8000) | |
3789 | glink_vma += 4; | |
3790 | } | |
3791 | else | |
468392fb AM |
3792 | glink_vma += 4; |
3793 | } | |
3794 | count += plt_count; | |
3795 | } | |
90e3cdf2 JJ |
3796 | } |
3797 | ||
c9727e01 | 3798 | done: |
a7535cf3 | 3799 | free (syms); |
90e3cdf2 JJ |
3800 | return count; |
3801 | } | |
5bd4f169 | 3802 | \f |
65f38f15 AM |
3803 | /* The following functions are specific to the ELF linker, while |
3804 | functions above are used generally. Those named ppc64_elf_* are | |
3805 | called by the main ELF linker code. They appear in this file more | |
3806 | or less in the order in which they are called. eg. | |
3807 | ppc64_elf_check_relocs is called early in the link process, | |
3808 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3809 | called. |
3810 | ||
3811 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3812 | functions have both a function code symbol and a function descriptor | |
3813 | symbol. A call to foo in a relocatable object file looks like: | |
3814 | ||
3815 | . .text | |
3816 | . x: | |
3817 | . bl .foo | |
3818 | . nop | |
3819 | ||
3820 | The function definition in another object file might be: | |
3821 | ||
3822 | . .section .opd | |
3823 | . foo: .quad .foo | |
3824 | . .quad .TOC.@tocbase | |
3825 | . .quad 0 | |
3826 | . | |
3827 | . .text | |
3828 | . .foo: blr | |
3829 | ||
3830 | When the linker resolves the call during a static link, the branch | |
3831 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3832 | If the function definition is in a shared library, things are a little | |
3833 | different: The call goes via a plt call stub, the opd information gets | |
3834 | copied to the plt, and the linker patches the nop. | |
3835 | ||
3836 | . x: | |
3837 | . bl .foo_stub | |
3838 | . ld 2,40(1) | |
3839 | . | |
3840 | . | |
3841 | . .foo_stub: | |
71a39c98 AM |
3842 | . std 2,40(1) # in practice, the call stub |
3843 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3844 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3845 | . ld 12,0(11) | |
3846 | . ld 2,8(11) | |
3847 | . mtctr 12 | |
3848 | . ld 11,16(11) | |
e86ce104 AM |
3849 | . bctr |
3850 | . | |
3851 | . .section .plt | |
3852 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3853 | ||
3854 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3855 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3856 | copying. | |
3857 | ||
3858 | What are the difficulties here? Well, firstly, the relocations | |
3859 | examined by the linker in check_relocs are against the function code | |
3860 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3861 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3862 | to carefully copy dynamic link information from one symbol to the other. | |
3863 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3864 | symbol as is normal for most other backends. We need foo dynamic | |
3865 | instead, at least for an application final link. However, when | |
3866 | creating a shared library containing foo, we need to have both symbols | |
3867 | dynamic so that references to .foo are satisfied during the early | |
3868 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3869 | definition from some other object, eg. a static library. |
3870 | ||
3871 | Update: As of August 2004, we support a new convention. Function | |
3872 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3873 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3874 | |
7c8bbca5 AM |
3875 | /* Of those relocs that might be copied as dynamic relocs, this |
3876 | function selects those that must be copied when linking a shared | |
3877 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 3878 | |
1d483afe AM |
3879 | static int |
3880 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3881 | enum elf_ppc64_reloc_type r_type) | |
3882 | { | |
3883 | switch (r_type) | |
3884 | { | |
3885 | default: | |
7c8bbca5 AM |
3886 | /* Only relative relocs can be resolved when the object load |
3887 | address isn't fixed. DTPREL64 is excluded because the | |
3888 | dynamic linker needs to differentiate global dynamic from | |
3889 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
3890 | return 1; |
3891 | ||
3892 | case R_PPC64_REL32: | |
3893 | case R_PPC64_REL64: | |
3894 | case R_PPC64_REL30: | |
3895 | return 0; | |
3896 | ||
3897 | case R_PPC64_TPREL16: | |
3898 | case R_PPC64_TPREL16_LO: | |
3899 | case R_PPC64_TPREL16_HI: | |
3900 | case R_PPC64_TPREL16_HA: | |
3901 | case R_PPC64_TPREL16_DS: | |
3902 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3903 | case R_PPC64_TPREL16_HIGH: |
3904 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3905 | case R_PPC64_TPREL16_HIGHER: |
3906 | case R_PPC64_TPREL16_HIGHERA: | |
3907 | case R_PPC64_TPREL16_HIGHEST: | |
3908 | case R_PPC64_TPREL16_HIGHESTA: | |
3909 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
3910 | /* These relocations are relative but in a shared library the |
3911 | linker doesn't know the thread pointer base. */ | |
3912 | return bfd_link_dll (info); | |
1d483afe AM |
3913 | } |
3914 | } | |
65f38f15 | 3915 | |
f4656909 AM |
3916 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3917 | copying dynamic variables from a shared lib into an app's dynbss | |
3918 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3919 | shared lib. With code that gcc generates, it's vital that this be |
3920 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3921 | the address of a function descriptor, which resides in the .opd | |
3922 | section. gcc uses the descriptor directly rather than going via the | |
3923 | GOT as some other ABI's do, which means that initialized function | |
3924 | pointers must reference the descriptor. Thus, a function pointer | |
3925 | initialized to the address of a function in a shared library will | |
3926 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3927 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3928 | presents a problem as a plt entry for that function is also |
3929 | initialized from the function descriptor symbol and the copy reloc | |
3930 | may not be initialized first. */ | |
a23b6845 | 3931 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3932 | |
721956f4 | 3933 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3934 | string. */ |
3935 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3936 | |
3937 | /* Linker stubs. | |
3938 | ppc_stub_long_branch: | |
3939 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3940 | destination, but a 24 bit branch in a stub section will reach. | |
3941 | . b dest | |
3942 | ||
3943 | ppc_stub_plt_branch: | |
3944 | Similar to the above, but a 24 bit branch in the stub section won't | |
3945 | reach its destination. | |
71a39c98 AM |
3946 | . addis %r11,%r2,xxx@toc@ha |
3947 | . ld %r12,xxx@toc@l(%r11) | |
3948 | . mtctr %r12 | |
721956f4 AM |
3949 | . bctr |
3950 | ||
3951 | ppc_stub_plt_call: | |
2c66dc6c AM |
3952 | Used to call a function in a shared library. If it so happens that |
3953 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3954 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3955 | . std %r2,40(%r1) |
71a39c98 AM |
3956 | . addis %r11,%r2,xxx@toc@ha |
3957 | . ld %r12,xxx+0@toc@l(%r11) | |
3958 | . mtctr %r12 | |
3959 | . ld %r2,xxx+8@toc@l(%r11) | |
3960 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3961 | . bctr |
ad8e1ba5 AM |
3962 | |
3963 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3964 | code to adjust the value and save r2 to support multiple toc sections. | |
3965 | A ppc_stub_long_branch with an r2 offset looks like: | |
3966 | . std %r2,40(%r1) | |
3967 | . addis %r2,%r2,off@ha | |
3968 | . addi %r2,%r2,off@l | |
3969 | . b dest | |
3970 | ||
3971 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3972 | . std %r2,40(%r1) | |
71a39c98 AM |
3973 | . addis %r11,%r2,xxx@toc@ha |
3974 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3975 | . addis %r2,%r2,off@ha |
3976 | . addi %r2,%r2,off@l | |
71a39c98 | 3977 | . mtctr %r12 |
ad8e1ba5 | 3978 | . bctr |
ac2df442 AM |
3979 | |
3980 | In cases where the "addis" instruction would add zero, the "addis" is | |
3981 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3982 | */ |
3983 | ||
3984 | enum ppc_stub_type { | |
3985 | ppc_stub_none, | |
3986 | ppc_stub_long_branch, | |
ad8e1ba5 | 3987 | ppc_stub_long_branch_r2off, |
721956f4 | 3988 | ppc_stub_plt_branch, |
ad8e1ba5 | 3989 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3990 | ppc_stub_plt_call, |
7341d5e2 | 3991 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3992 | ppc_stub_global_entry, |
3993 | ppc_stub_save_res | |
721956f4 AM |
3994 | }; |
3995 | ||
6f20ed8a AM |
3996 | /* Information on stub grouping. */ |
3997 | struct map_stub | |
3998 | { | |
3999 | /* The stub section. */ | |
4000 | asection *stub_sec; | |
4001 | /* This is the section to which stubs in the group will be attached. */ | |
4002 | asection *link_sec; | |
a4b6fadd AM |
4003 | /* Next group. */ |
4004 | struct map_stub *next; | |
4005 | /* Whether to emit a copy of register save/restore functions in this | |
4006 | group. */ | |
4007 | int needs_save_res; | |
d4aaa2a0 AM |
4008 | /* The offset of the __tls_get_addr_opt plt stub bctrl in this group, |
4009 | or -1u if no such stub with bctrl exists. */ | |
4010 | unsigned int tls_get_addr_opt_bctrl; | |
6f20ed8a AM |
4011 | }; |
4012 | ||
721956f4 AM |
4013 | struct ppc_stub_hash_entry { |
4014 | ||
4015 | /* Base hash table entry structure. */ | |
4016 | struct bfd_hash_entry root; | |
4017 | ||
ad8e1ba5 AM |
4018 | enum ppc_stub_type stub_type; |
4019 | ||
6f20ed8a AM |
4020 | /* Group information. */ |
4021 | struct map_stub *group; | |
721956f4 AM |
4022 | |
4023 | /* Offset within stub_sec of the beginning of this stub. */ | |
4024 | bfd_vma stub_offset; | |
4025 | ||
4026 | /* Given the symbol's value and its section we can determine its final | |
4027 | value when building the stubs (so the stub knows where to jump. */ | |
4028 | bfd_vma target_value; | |
4029 | asection *target_section; | |
4030 | ||
721956f4 AM |
4031 | /* The symbol table entry, if any, that this was derived from. */ |
4032 | struct ppc_link_hash_entry *h; | |
e054468f | 4033 | struct plt_entry *plt_ent; |
721956f4 | 4034 | |
2d7ad24e AM |
4035 | /* Symbol type. */ |
4036 | unsigned char symtype; | |
4037 | ||
6911b7dc AM |
4038 | /* Symbol st_other. */ |
4039 | unsigned char other; | |
721956f4 AM |
4040 | }; |
4041 | ||
4042 | struct ppc_branch_hash_entry { | |
4043 | ||
4044 | /* Base hash table entry structure. */ | |
4045 | struct bfd_hash_entry root; | |
4046 | ||
c456f082 | 4047 | /* Offset within branch lookup table. */ |
721956f4 AM |
4048 | unsigned int offset; |
4049 | ||
4050 | /* Generation marker. */ | |
4051 | unsigned int iter; | |
4052 | }; | |
65f38f15 | 4053 | |
19e08130 AM |
4054 | /* Used to track dynamic relocations for local symbols. */ |
4055 | struct ppc_dyn_relocs | |
4056 | { | |
4057 | struct ppc_dyn_relocs *next; | |
4058 | ||
4059 | /* The input section of the reloc. */ | |
4060 | asection *sec; | |
4061 | ||
4062 | /* Total number of relocs copied for the input section. */ | |
4063 | unsigned int count : 31; | |
4064 | ||
4065 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
4066 | unsigned int ifunc : 1; | |
4067 | }; | |
4068 | ||
65f38f15 AM |
4069 | struct ppc_link_hash_entry |
4070 | { | |
4071 | struct elf_link_hash_entry elf; | |
4072 | ||
b3fac117 AM |
4073 | union { |
4074 | /* A pointer to the most recently used stub hash entry against this | |
4075 | symbol. */ | |
4076 | struct ppc_stub_hash_entry *stub_cache; | |
4077 | ||
4078 | /* A pointer to the next symbol starting with a '.' */ | |
4079 | struct ppc_link_hash_entry *next_dot_sym; | |
4080 | } u; | |
721956f4 | 4081 | |
65f38f15 | 4082 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 4083 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 4084 | |
721956f4 | 4085 | /* Link between function code and descriptor symbols. */ |
34814b9f | 4086 | struct ppc_link_hash_entry *oh; |
721956f4 | 4087 | |
e86ce104 AM |
4088 | /* Flag function code and descriptor symbols. */ |
4089 | unsigned int is_func:1; | |
4090 | unsigned int is_func_descriptor:1; | |
908b32fc | 4091 | unsigned int fake:1; |
411e1bfb | 4092 | |
c5614fa4 AM |
4093 | /* Whether global opd/toc sym has been adjusted or not. |
4094 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
4095 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
4096 | unsigned int adjust_done:1; |
4097 | ||
a4b6fadd AM |
4098 | /* Set if this is an out-of-line register save/restore function, |
4099 | with non-standard calling convention. */ | |
4100 | unsigned int save_res:1; | |
4101 | ||
8b5f1ed8 AM |
4102 | /* Set if a duplicate symbol with non-zero localentry is detected, |
4103 | even when the duplicate symbol does not provide a definition. */ | |
4104 | unsigned int non_zero_localentry:1; | |
4105 | ||
411e1bfb | 4106 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
4107 | Bits are or'd into the mask as the corresponding relocs are |
4108 | encountered during check_relocs, with TLS_TLS being set when any | |
4109 | of the other TLS bits are set. tls_optimize clears bits when | |
4110 | optimizing to indicate the corresponding GOT entry type is not | |
4111 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
4112 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
4113 | separate flag rather than setting TPREL just for convenience in | |
4114 | distinguishing the two cases. | |
4115 | These flags are also kept for local symbols. */ | |
4116 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
4117 | #define TLS_GD 2 /* GD reloc. */ | |
4118 | #define TLS_LD 4 /* LD reloc. */ | |
4119 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
4120 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
4121 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 4122 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 4123 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 4124 | unsigned char tls_mask; |
37da22e5 AM |
4125 | |
4126 | /* The above field is also used to mark function symbols. In which | |
4127 | case TLS_TLS will be 0. */ | |
4128 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 4129 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 4130 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
4131 | }; |
4132 | ||
4133 | /* ppc64 ELF linker hash table. */ | |
4134 | ||
4135 | struct ppc_link_hash_table | |
4136 | { | |
4137 | struct elf_link_hash_table elf; | |
4138 | ||
721956f4 AM |
4139 | /* The stub hash table. */ |
4140 | struct bfd_hash_table stub_hash_table; | |
4141 | ||
4142 | /* Another hash table for plt_branch stubs. */ | |
4143 | struct bfd_hash_table branch_hash_table; | |
4144 | ||
3b421ab3 AM |
4145 | /* Hash table for function prologue tocsave. */ |
4146 | htab_t tocsave_htab; | |
4147 | ||
e7d1c40c AM |
4148 | /* Various options and other info passed from the linker. */ |
4149 | struct ppc64_elf_params *params; | |
721956f4 | 4150 | |
6f20ed8a AM |
4151 | /* The size of sec_info below. */ |
4152 | unsigned int sec_info_arr_size; | |
4153 | ||
4154 | /* Per-section array of extra section info. Done this way rather | |
4155 | than as part of ppc64_elf_section_data so we have the info for | |
4156 | non-ppc64 sections. */ | |
4157 | struct | |
4158 | { | |
4159 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4160 | bfd_vma toc_off; |
6f20ed8a AM |
4161 | |
4162 | union | |
4163 | { | |
4164 | /* The section group that this section belongs to. */ | |
4165 | struct map_stub *group; | |
4166 | /* A temp section list pointer. */ | |
4167 | asection *list; | |
4168 | } u; | |
4169 | } *sec_info; | |
721956f4 | 4170 | |
a4b6fadd AM |
4171 | /* Linked list of groups. */ |
4172 | struct map_stub *group; | |
4173 | ||
ad8e1ba5 AM |
4174 | /* Temp used when calculating TOC pointers. */ |
4175 | bfd_vma toc_curr; | |
bf102f86 AM |
4176 | bfd *toc_bfd; |
4177 | asection *toc_first_sec; | |
ad8e1ba5 | 4178 | |
b3fac117 AM |
4179 | /* Used when adding symbols. */ |
4180 | struct ppc_link_hash_entry *dot_syms; | |
4181 | ||
33e44f2e | 4182 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 4183 | asection *glink; |
9e390558 | 4184 | asection *global_entry; |
82bd7b59 | 4185 | asection *sfpr; |
2d7ad24e AM |
4186 | asection *pltlocal; |
4187 | asection *relpltlocal; | |
4ce794b7 AM |
4188 | asection *brlt; |
4189 | asection *relbrlt; | |
58d180e8 | 4190 | asection *glink_eh_frame; |
ec338859 | 4191 | |
8387904d AM |
4192 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4193 | struct ppc_link_hash_entry *tls_get_addr; | |
4194 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4195 | |
927be08e AM |
4196 | /* The size of reliplt used by got entry relocs. */ |
4197 | bfd_size_type got_reli_size; | |
4198 | ||
9b5ecbd0 | 4199 | /* Statistics. */ |
7341d5e2 | 4200 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4201 | |
ee75fd95 AM |
4202 | /* Number of stubs against global syms. */ |
4203 | unsigned long stub_globals; | |
4204 | ||
ee67d69a AM |
4205 | /* Set if we're linking code with function descriptors. */ |
4206 | unsigned int opd_abi:1; | |
4207 | ||
4c52953f | 4208 | /* Support for multiple toc sections. */ |
33c0ec9d | 4209 | unsigned int do_multi_toc:1; |
4c52953f | 4210 | unsigned int multi_toc_needed:1; |
927be08e | 4211 | unsigned int second_toc_pass:1; |
67f0cbdb | 4212 | unsigned int do_toc_opt:1; |
4c52953f | 4213 | |
9a23f96e AM |
4214 | /* Set if tls optimization is enabled. */ |
4215 | unsigned int do_tls_opt:1; | |
4216 | ||
3e04d765 AM |
4217 | /* Set if inline plt calls should be converted to direct calls. */ |
4218 | unsigned int can_convert_all_inline_plt:1; | |
4219 | ||
5d1634d7 | 4220 | /* Set on error. */ |
99877b66 | 4221 | unsigned int stub_error:1; |
721956f4 | 4222 | |
8c5b4e52 AM |
4223 | /* Whether func_desc_adjust needs to be run over symbols. */ |
4224 | unsigned int need_func_desc_adj:1; | |
721956f4 | 4225 | |
82e66161 AM |
4226 | /* Whether there exist local gnu indirect function resolvers, |
4227 | referenced by dynamic relocations. */ | |
4228 | unsigned int local_ifunc_resolver:1; | |
4229 | unsigned int maybe_local_ifunc_resolver:1; | |
4230 | ||
f378ab09 AM |
4231 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
4232 | unsigned int has_plt_localentry0:1; | |
4233 | ||
721956f4 AM |
4234 | /* Incremented every time we size stubs. */ |
4235 | unsigned int stub_iteration; | |
5d1634d7 | 4236 | |
87d72d41 AM |
4237 | /* Small local sym cache. */ |
4238 | struct sym_cache sym_cache; | |
65f38f15 AM |
4239 | }; |
4240 | ||
4c52953f AM |
4241 | /* Rename some of the generic section flags to better document how they |
4242 | are used here. */ | |
b0dddeec AM |
4243 | |
4244 | /* Nonzero if this section has TLS related relocations. */ | |
4245 | #define has_tls_reloc sec_flg0 | |
4246 | ||
23cedd1d | 4247 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
4248 | #define has_tls_get_addr_call sec_flg1 |
4249 | ||
4250 | /* Nonzero if this section has any toc or got relocs. */ | |
4251 | #define has_toc_reloc sec_flg2 | |
4252 | ||
4253 | /* Nonzero if this section has a call to another section that uses | |
4254 | the toc or got. */ | |
d77c8a4b | 4255 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4256 | |
4257 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4258 | #define call_check_in_progress sec_flg4 |
70cc837d | 4259 | #define call_check_done sec_flg5 |
4c52953f | 4260 | |
65f38f15 AM |
4261 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4262 | ||
4263 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4264 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4265 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4266 | |
721956f4 AM |
4267 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4268 | ((struct ppc_stub_hash_entry *) \ | |
4269 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4270 | ||
4271 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4272 | ((struct ppc_branch_hash_entry *) \ | |
4273 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4274 | ||
4275 | /* Create an entry in the stub hash table. */ | |
4276 | ||
4277 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4278 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4279 | struct bfd_hash_table *table, | |
4280 | const char *string) | |
721956f4 AM |
4281 | { |
4282 | /* Allocate the structure if it has not already been allocated by a | |
4283 | subclass. */ | |
4284 | if (entry == NULL) | |
4285 | { | |
4286 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4287 | if (entry == NULL) | |
4288 | return entry; | |
4289 | } | |
4290 | ||
4291 | /* Call the allocation method of the superclass. */ | |
4292 | entry = bfd_hash_newfunc (entry, table, string); | |
4293 | if (entry != NULL) | |
4294 | { | |
4295 | struct ppc_stub_hash_entry *eh; | |
4296 | ||
4297 | /* Initialize the local fields. */ | |
4298 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4299 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4300 | eh->group = NULL; |
721956f4 AM |
4301 | eh->stub_offset = 0; |
4302 | eh->target_value = 0; | |
4303 | eh->target_section = NULL; | |
721956f4 | 4304 | eh->h = NULL; |
6911b7dc | 4305 | eh->plt_ent = NULL; |
6911b7dc | 4306 | eh->other = 0; |
721956f4 AM |
4307 | } |
4308 | ||
4309 | return entry; | |
4310 | } | |
4311 | ||
4312 | /* Create an entry in the branch hash table. */ | |
4313 | ||
4314 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4315 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4316 | struct bfd_hash_table *table, | |
4317 | const char *string) | |
721956f4 AM |
4318 | { |
4319 | /* Allocate the structure if it has not already been allocated by a | |
4320 | subclass. */ | |
4321 | if (entry == NULL) | |
4322 | { | |
4323 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4324 | if (entry == NULL) | |
4325 | return entry; | |
4326 | } | |
4327 | ||
4328 | /* Call the allocation method of the superclass. */ | |
4329 | entry = bfd_hash_newfunc (entry, table, string); | |
4330 | if (entry != NULL) | |
4331 | { | |
4332 | struct ppc_branch_hash_entry *eh; | |
4333 | ||
4334 | /* Initialize the local fields. */ | |
4335 | eh = (struct ppc_branch_hash_entry *) entry; | |
4336 | eh->offset = 0; | |
4337 | eh->iter = 0; | |
4338 | } | |
4339 | ||
4340 | return entry; | |
4341 | } | |
4342 | ||
65f38f15 AM |
4343 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4344 | ||
4345 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4346 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4347 | struct bfd_hash_table *table, | |
4348 | const char *string) | |
65f38f15 AM |
4349 | { |
4350 | /* Allocate the structure if it has not already been allocated by a | |
4351 | subclass. */ | |
4352 | if (entry == NULL) | |
4353 | { | |
4354 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4355 | if (entry == NULL) | |
4356 | return entry; | |
4357 | } | |
4358 | ||
4359 | /* Call the allocation method of the superclass. */ | |
4360 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4361 | if (entry != NULL) | |
4362 | { | |
4363 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4364 | ||
b3fac117 | 4365 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4366 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4367 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4368 | ||
4369 | /* When making function calls, old ABI code references function entry | |
4370 | points (dot symbols), while new ABI code references the function | |
4371 | descriptor symbol. We need to make any combination of reference and | |
4372 | definition work together, without breaking archive linking. | |
4373 | ||
4374 | For a defined function "foo" and an undefined call to "bar": | |
4375 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4376 | "bar" too). | |
4377 | A new object defines "foo" and references "bar". | |
4378 | ||
4379 | A new object thus has no problem with its undefined symbols being | |
4380 | satisfied by definitions in an old object. On the other hand, the | |
4381 | old object won't have ".bar" satisfied by a new object. | |
4382 | ||
4383 | Keep a list of newly added dot-symbols. */ | |
4384 | ||
4385 | if (string[0] == '.') | |
4386 | { | |
4387 | struct ppc_link_hash_table *htab; | |
4388 | ||
4389 | htab = (struct ppc_link_hash_table *) table; | |
4390 | eh->u.next_dot_sym = htab->dot_syms; | |
4391 | htab->dot_syms = eh; | |
4392 | } | |
65f38f15 AM |
4393 | } |
4394 | ||
4395 | return entry; | |
4396 | } | |
4397 | ||
3b421ab3 AM |
4398 | struct tocsave_entry { |
4399 | asection *sec; | |
4400 | bfd_vma offset; | |
4401 | }; | |
4402 | ||
4403 | static hashval_t | |
4404 | tocsave_htab_hash (const void *p) | |
4405 | { | |
4406 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 4407 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
4408 | } |
4409 | ||
4410 | static int | |
4411 | tocsave_htab_eq (const void *p1, const void *p2) | |
4412 | { | |
4413 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4414 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4415 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4416 | } | |
4417 | ||
68faa637 AM |
4418 | /* Destroy a ppc64 ELF linker hash table. */ |
4419 | ||
4420 | static void | |
d495ab0d | 4421 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4422 | { |
d495ab0d | 4423 | struct ppc_link_hash_table *htab; |
68faa637 | 4424 | |
d495ab0d | 4425 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4426 | if (htab->tocsave_htab) |
4427 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4428 | bfd_hash_table_free (&htab->branch_hash_table); |
4429 | bfd_hash_table_free (&htab->stub_hash_table); | |
4430 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4431 | } |
4432 | ||
65f38f15 AM |
4433 | /* Create a ppc64 ELF linker hash table. */ |
4434 | ||
4435 | static struct bfd_link_hash_table * | |
4ce794b7 | 4436 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4437 | { |
4438 | struct ppc_link_hash_table *htab; | |
4439 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4440 | ||
4ce794b7 | 4441 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4442 | if (htab == NULL) |
4443 | return NULL; | |
4444 | ||
66eb6687 | 4445 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4446 | sizeof (struct ppc_link_hash_entry), |
4447 | PPC64_ELF_DATA)) | |
65f38f15 | 4448 | { |
e2d34d7d | 4449 | free (htab); |
65f38f15 AM |
4450 | return NULL; |
4451 | } | |
4452 | ||
721956f4 | 4453 | /* Init the stub hash table too. */ |
66eb6687 AM |
4454 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4455 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4456 | { |
d495ab0d | 4457 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4458 | return NULL; |
4459 | } | |
721956f4 AM |
4460 | |
4461 | /* And the branch hash table. */ | |
66eb6687 AM |
4462 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4463 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4464 | { |
4465 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4466 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4467 | return NULL; |
4468 | } | |
721956f4 | 4469 | |
3b421ab3 AM |
4470 | htab->tocsave_htab = htab_try_create (1024, |
4471 | tocsave_htab_hash, | |
4472 | tocsave_htab_eq, | |
4473 | NULL); | |
4474 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4475 | { |
d495ab0d | 4476 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4477 | return NULL; |
4478 | } | |
d495ab0d | 4479 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4480 | |
3254fd24 AM |
4481 | /* Initializing two fields of the union is just cosmetic. We really |
4482 | only care about glist, but when compiled on a 32-bit host the | |
4483 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4484 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4485 | htab->elf.init_got_refcount.refcount = 0; |
4486 | htab->elf.init_got_refcount.glist = NULL; | |
4487 | htab->elf.init_plt_refcount.refcount = 0; | |
4488 | htab->elf.init_plt_refcount.glist = NULL; | |
4489 | htab->elf.init_got_offset.offset = 0; | |
4490 | htab->elf.init_got_offset.glist = NULL; | |
4491 | htab->elf.init_plt_offset.offset = 0; | |
4492 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4493 | |
65f38f15 AM |
4494 | return &htab->elf.root; |
4495 | } | |
4496 | ||
bfeb4a28 AM |
4497 | /* Create sections for linker generated code. */ |
4498 | ||
4499 | static bfd_boolean | |
4500 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4501 | { | |
4502 | struct ppc_link_hash_table *htab; | |
4503 | flagword flags; | |
4504 | ||
4505 | htab = ppc_hash_table (info); | |
4506 | ||
bfeb4a28 AM |
4507 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4508 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4509 | if (htab->params->save_restore_funcs) |
4510 | { | |
4511 | /* Create .sfpr for code to save and restore fp regs. */ | |
4512 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4513 | flags); | |
4514 | if (htab->sfpr == NULL | |
4515 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4516 | return FALSE; | |
4517 | } | |
4518 | ||
4519 | if (bfd_link_relocatable (info)) | |
4520 | return TRUE; | |
bfeb4a28 AM |
4521 | |
4522 | /* Create .glink for lazy dynamic linking support. */ | |
4523 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4524 | flags); | |
4525 | if (htab->glink == NULL | |
4526 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4527 | return FALSE; | |
4528 | ||
9e390558 AM |
4529 | /* The part of .glink used by global entry stubs, separate so that |
4530 | it can be aligned appropriately without affecting htab->glink. */ | |
4531 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4532 | flags); | |
4533 | if (htab->global_entry == NULL | |
4534 | || ! bfd_set_section_alignment (dynobj, htab->global_entry, 2)) | |
4535 | return FALSE; | |
4536 | ||
bfeb4a28 AM |
4537 | if (!info->no_ld_generated_unwind_info) |
4538 | { | |
4539 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4540 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4541 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4542 | ".eh_frame", | |
4543 | flags); | |
4544 | if (htab->glink_eh_frame == NULL | |
4545 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4546 | return FALSE; | |
4547 | } | |
4548 | ||
4549 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4550 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4551 | if (htab->elf.iplt == NULL | |
4552 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4553 | return FALSE; |
4554 | ||
4555 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4556 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4557 | htab->elf.irelplt |
4558 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4559 | if (htab->elf.irelplt == NULL | |
4560 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4561 | return FALSE; |
4562 | ||
4563 | /* Create branch lookup table for plt_branch stubs. */ | |
4564 | flags = (SEC_ALLOC | SEC_LOAD | |
4565 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4566 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4567 | flags); | |
4568 | if (htab->brlt == NULL | |
4569 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4570 | return FALSE; | |
4571 | ||
2d7ad24e AM |
4572 | /* Local plt entries, put in .branch_lt but a separate section for |
4573 | convenience. */ | |
4574 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4575 | flags); | |
4576 | if (htab->pltlocal == NULL | |
4577 | || ! bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) | |
4578 | return FALSE; | |
4579 | ||
0e1862bb | 4580 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4581 | return TRUE; |
4582 | ||
4583 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4584 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
4585 | htab->relbrlt |
4586 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 AM |
4587 | if (htab->relbrlt == NULL |
4588 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4589 | return FALSE; | |
4590 | ||
2d7ad24e AM |
4591 | htab->relpltlocal |
4592 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
4593 | if (htab->relpltlocal == NULL | |
4594 | || ! bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) | |
4595 | return FALSE; | |
4596 | ||
bfeb4a28 AM |
4597 | return TRUE; |
4598 | } | |
4599 | ||
e717da7e AM |
4600 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4601 | ||
bfeb4a28 | 4602 | bfd_boolean |
e7d1c40c AM |
4603 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4604 | struct ppc64_elf_params *params) | |
e717da7e AM |
4605 | { |
4606 | struct ppc_link_hash_table *htab; | |
4607 | ||
e7d1c40c | 4608 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4609 | |
4610 | /* Always hook our dynamic sections into the first bfd, which is the | |
4611 | linker created stub bfd. This ensures that the GOT header is at | |
4612 | the start of the output TOC section. */ | |
4613 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4614 | htab->elf.dynobj = params->stub_bfd; |
4615 | htab->params = params; | |
bfeb4a28 | 4616 | |
bfeb4a28 | 4617 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4618 | } |
4619 | ||
721956f4 AM |
4620 | /* Build a name for an entry in the stub hash table. */ |
4621 | ||
4622 | static char * | |
4ce794b7 AM |
4623 | ppc_stub_name (const asection *input_section, |
4624 | const asection *sym_sec, | |
4625 | const struct ppc_link_hash_entry *h, | |
4626 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4627 | { |
4628 | char *stub_name; | |
bcaa2f82 | 4629 | ssize_t len; |
721956f4 AM |
4630 | |
4631 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4632 | offsets from a sym as a branch target? In fact, we could | |
4633 | probably assume the addend is always zero. */ | |
4634 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4635 | ||
4636 | if (h) | |
4637 | { | |
4638 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4639 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4640 | if (stub_name == NULL) |
4641 | return stub_name; | |
4642 | ||
bcaa2f82 AM |
4643 | len = sprintf (stub_name, "%08x.%s+%x", |
4644 | input_section->id & 0xffffffff, | |
4645 | h->elf.root.root.string, | |
4646 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4647 | } |
4648 | else | |
4649 | { | |
ad8e1ba5 | 4650 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4651 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4652 | if (stub_name == NULL) |
4653 | return stub_name; | |
4654 | ||
bcaa2f82 AM |
4655 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4656 | input_section->id & 0xffffffff, | |
4657 | sym_sec->id & 0xffffffff, | |
4658 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4659 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4660 | } |
bcaa2f82 | 4661 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4662 | stub_name[len - 2] = 0; |
721956f4 AM |
4663 | return stub_name; |
4664 | } | |
4665 | ||
4666 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4667 | creating the stub name takes a bit of time. */ | |
4668 | ||
4669 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4670 | ppc_get_stub_entry (const asection *input_section, |
4671 | const asection *sym_sec, | |
039b3fef | 4672 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4673 | const Elf_Internal_Rela *rel, |
4674 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4675 | { |
4676 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4677 | struct map_stub *group; |
721956f4 AM |
4678 | |
4679 | /* If this input section is part of a group of sections sharing one | |
4680 | stub section, then use the id of the first section in the group. | |
4681 | Stub names need to include a section id, as there may well be | |
4682 | more than one stub used to reach say, printf, and we need to | |
4683 | distinguish between them. */ | |
6f20ed8a | 4684 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
4685 | if (group == NULL) |
4686 | return NULL; | |
721956f4 | 4687 | |
b3fac117 AM |
4688 | if (h != NULL && h->u.stub_cache != NULL |
4689 | && h->u.stub_cache->h == h | |
6f20ed8a | 4690 | && h->u.stub_cache->group == group) |
721956f4 | 4691 | { |
b3fac117 | 4692 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4693 | } |
4694 | else | |
4695 | { | |
4696 | char *stub_name; | |
4697 | ||
6f20ed8a | 4698 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4699 | if (stub_name == NULL) |
4700 | return NULL; | |
4701 | ||
4702 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4703 | stub_name, FALSE, FALSE); |
721956f4 | 4704 | if (h != NULL) |
b3fac117 | 4705 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4706 | |
4707 | free (stub_name); | |
4708 | } | |
4709 | ||
4710 | return stub_entry; | |
4711 | } | |
4712 | ||
4713 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4714 | stub entry are initialised. */ | |
4715 | ||
4716 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4717 | ppc_add_stub (const char *stub_name, |
4718 | asection *section, | |
25f53a85 | 4719 | struct bfd_link_info *info) |
721956f4 | 4720 | { |
25f53a85 | 4721 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4722 | struct map_stub *group; |
721956f4 AM |
4723 | asection *link_sec; |
4724 | asection *stub_sec; | |
4725 | struct ppc_stub_hash_entry *stub_entry; | |
4726 | ||
6f20ed8a AM |
4727 | group = htab->sec_info[section->id].u.group; |
4728 | link_sec = group->link_sec; | |
4729 | stub_sec = group->stub_sec; | |
721956f4 AM |
4730 | if (stub_sec == NULL) |
4731 | { | |
6f20ed8a AM |
4732 | size_t namelen; |
4733 | bfd_size_type len; | |
4734 | char *s_name; | |
721956f4 | 4735 | |
6f20ed8a AM |
4736 | namelen = strlen (link_sec->name); |
4737 | len = namelen + sizeof (STUB_SUFFIX); | |
4738 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4739 | if (s_name == NULL) | |
4740 | return NULL; | |
721956f4 | 4741 | |
6f20ed8a AM |
4742 | memcpy (s_name, link_sec->name, namelen); |
4743 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4744 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4745 | if (stub_sec == NULL) | |
4746 | return NULL; | |
4747 | group->stub_sec = stub_sec; | |
721956f4 AM |
4748 | } |
4749 | ||
4750 | /* Enter this entry into the linker stub hash table. */ | |
4751 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4752 | TRUE, FALSE); |
721956f4 AM |
4753 | if (stub_entry == NULL) |
4754 | { | |
695344c0 | 4755 | /* xgettext:c-format */ |
cf97bcb0 AM |
4756 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4757 | section->owner, stub_name); | |
721956f4 AM |
4758 | return NULL; |
4759 | } | |
4760 | ||
6f20ed8a | 4761 | stub_entry->group = group; |
721956f4 | 4762 | stub_entry->stub_offset = 0; |
721956f4 AM |
4763 | return stub_entry; |
4764 | } | |
4765 | ||
e717da7e AM |
4766 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4767 | not already done. */ | |
65f38f15 | 4768 | |
b34976b6 | 4769 | static bfd_boolean |
e717da7e | 4770 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4771 | { |
e717da7e AM |
4772 | asection *got, *relgot; |
4773 | flagword flags; | |
4774 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4775 | |
0c8d6e5c | 4776 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4777 | return FALSE; |
4dfe6ac6 NC |
4778 | if (htab == NULL) |
4779 | return FALSE; | |
0ffa91dd | 4780 | |
33e44f2e AM |
4781 | if (!htab->elf.sgot |
4782 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4783 | return FALSE; | |
e717da7e AM |
4784 | |
4785 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4786 | | SEC_LINKER_CREATED); | |
4787 | ||
c456f082 | 4788 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4789 | if (!got |
e717da7e AM |
4790 | || !bfd_set_section_alignment (abfd, got, 3)) |
4791 | return FALSE; | |
65f38f15 | 4792 | |
c456f082 AM |
4793 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4794 | flags | SEC_READONLY); | |
e717da7e | 4795 | if (!relgot |
e717da7e | 4796 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4797 | return FALSE; |
e717da7e AM |
4798 | |
4799 | ppc64_elf_tdata (abfd)->got = got; | |
4800 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4801 | return TRUE; |
65f38f15 | 4802 | } |
5bd4f169 | 4803 | |
b31867b6 AM |
4804 | /* Follow indirect and warning symbol links. */ |
4805 | ||
4806 | static inline struct bfd_link_hash_entry * | |
4807 | follow_link (struct bfd_link_hash_entry *h) | |
4808 | { | |
4809 | while (h->type == bfd_link_hash_indirect | |
4810 | || h->type == bfd_link_hash_warning) | |
4811 | h = h->u.i.link; | |
4812 | return h; | |
4813 | } | |
4814 | ||
4815 | static inline struct elf_link_hash_entry * | |
4816 | elf_follow_link (struct elf_link_hash_entry *h) | |
4817 | { | |
4818 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4819 | } | |
4820 | ||
4821 | static inline struct ppc_link_hash_entry * | |
4822 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4823 | { | |
4824 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4825 | } | |
4826 | ||
40d16e0b AM |
4827 | /* Merge PLT info on FROM with that on TO. */ |
4828 | ||
4829 | static void | |
4830 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4831 | struct ppc_link_hash_entry *to) | |
4832 | { | |
4833 | if (from->elf.plt.plist != NULL) | |
4834 | { | |
4835 | if (to->elf.plt.plist != NULL) | |
4836 | { | |
4837 | struct plt_entry **entp; | |
4838 | struct plt_entry *ent; | |
4839 | ||
4840 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4841 | { | |
4842 | struct plt_entry *dent; | |
4843 | ||
4844 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4845 | if (dent->addend == ent->addend) | |
4846 | { | |
4847 | dent->plt.refcount += ent->plt.refcount; | |
4848 | *entp = ent->next; | |
4849 | break; | |
4850 | } | |
4851 | if (dent == NULL) | |
4852 | entp = &ent->next; | |
4853 | } | |
4854 | *entp = to->elf.plt.plist; | |
4855 | } | |
4856 | ||
4857 | to->elf.plt.plist = from->elf.plt.plist; | |
4858 | from->elf.plt.plist = NULL; | |
4859 | } | |
4860 | } | |
4861 | ||
65f38f15 AM |
4862 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4863 | ||
4864 | static void | |
fcfa13d2 AM |
4865 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4866 | struct elf_link_hash_entry *dir, | |
4867 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4868 | { |
4869 | struct ppc_link_hash_entry *edir, *eind; | |
4870 | ||
4871 | edir = (struct ppc_link_hash_entry *) dir; | |
4872 | eind = (struct ppc_link_hash_entry *) ind; | |
4873 | ||
c79d6685 AM |
4874 | edir->is_func |= eind->is_func; |
4875 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4876 | edir->tls_mask |= eind->tls_mask; | |
4877 | if (eind->oh != NULL) | |
4878 | edir->oh = ppc_follow_link (eind->oh); | |
4879 | ||
474436e6 | 4880 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
4881 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4882 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4883 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 4884 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
4885 | edir->elf.needs_plt |= eind->elf.needs_plt; |
4886 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 4887 | |
d311bc8b AM |
4888 | /* If we were called to copy over info for a weak sym, don't copy |
4889 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
4890 | in order to simplify readonly_dynrelocs and save a field in the | |
4891 | symbol hash entry, but that means dyn_relocs can't be used in any | |
4892 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 4893 | are then tested. */ |
d311bc8b | 4894 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 4895 | return; |
d311bc8b | 4896 | |
411e1bfb | 4897 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4898 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4899 | { |
bbd7ec4a AM |
4900 | if (edir->dyn_relocs != NULL) |
4901 | { | |
6061a67d AM |
4902 | struct elf_dyn_relocs **pp; |
4903 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4904 | |
fcfa13d2 | 4905 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4906 | list. Merge any entries against the same section. */ |
4907 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4908 | { | |
6061a67d | 4909 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4910 | |
4911 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4912 | if (q->sec == p->sec) | |
4913 | { | |
4914 | q->pc_count += p->pc_count; | |
4915 | q->count += p->count; | |
4916 | *pp = p->next; | |
4917 | break; | |
4918 | } | |
4919 | if (q == NULL) | |
4920 | pp = &p->next; | |
4921 | } | |
4922 | *pp = edir->dyn_relocs; | |
4923 | } | |
4924 | ||
65f38f15 AM |
4925 | edir->dyn_relocs = eind->dyn_relocs; |
4926 | eind->dyn_relocs = NULL; | |
4927 | } | |
65f38f15 | 4928 | |
81848ca0 AM |
4929 | /* Copy over got entries that we may have already seen to the |
4930 | symbol which just became indirect. */ | |
411e1bfb AM |
4931 | if (eind->elf.got.glist != NULL) |
4932 | { | |
4933 | if (edir->elf.got.glist != NULL) | |
4934 | { | |
4935 | struct got_entry **entp; | |
4936 | struct got_entry *ent; | |
4937 | ||
4938 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4939 | { | |
4940 | struct got_entry *dent; | |
4941 | ||
4942 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4943 | if (dent->addend == ent->addend | |
e717da7e | 4944 | && dent->owner == ent->owner |
411e1bfb AM |
4945 | && dent->tls_type == ent->tls_type) |
4946 | { | |
4947 | dent->got.refcount += ent->got.refcount; | |
4948 | *entp = ent->next; | |
4949 | break; | |
4950 | } | |
4951 | if (dent == NULL) | |
4952 | entp = &ent->next; | |
4953 | } | |
4954 | *entp = edir->elf.got.glist; | |
4955 | } | |
4956 | ||
4957 | edir->elf.got.glist = eind->elf.got.glist; | |
4958 | eind->elf.got.glist = NULL; | |
4959 | } | |
4960 | ||
4961 | /* And plt entries. */ | |
40d16e0b | 4962 | move_plt_plist (eind, edir); |
411e1bfb | 4963 | |
fcfa13d2 | 4964 | if (eind->elf.dynindx != -1) |
411e1bfb | 4965 | { |
fcfa13d2 AM |
4966 | if (edir->elf.dynindx != -1) |
4967 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4968 | edir->elf.dynstr_index); | |
411e1bfb AM |
4969 | edir->elf.dynindx = eind->elf.dynindx; |
4970 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4971 | eind->elf.dynindx = -1; | |
4972 | eind->elf.dynstr_index = 0; | |
4973 | } | |
411e1bfb AM |
4974 | } |
4975 | ||
8387904d AM |
4976 | /* Find the function descriptor hash entry from the given function code |
4977 | hash entry FH. Link the entries via their OH fields. */ | |
4978 | ||
4979 | static struct ppc_link_hash_entry * | |
b31867b6 | 4980 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4981 | { |
4982 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4983 | ||
4984 | if (fdh == NULL) | |
4985 | { | |
4986 | const char *fd_name = fh->elf.root.root.string + 1; | |
4987 | ||
4988 | fdh = (struct ppc_link_hash_entry *) | |
4989 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4990 | if (fdh == NULL) |
4991 | return fdh; | |
4992 | ||
4993 | fdh->is_func_descriptor = 1; | |
4994 | fdh->oh = fh; | |
4995 | fh->is_func = 1; | |
4996 | fh->oh = fdh; | |
8387904d AM |
4997 | } |
4998 | ||
8c5b4e52 AM |
4999 | fdh = ppc_follow_link (fdh); |
5000 | fdh->is_func_descriptor = 1; | |
5001 | fdh->oh = fh; | |
5002 | return fdh; | |
8387904d AM |
5003 | } |
5004 | ||
8c5b4e52 | 5005 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
5006 | |
5007 | static struct ppc_link_hash_entry * | |
5008 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 5009 | struct ppc_link_hash_entry *fh) |
bb700d78 | 5010 | { |
8c5b4e52 AM |
5011 | bfd *abfd = fh->elf.root.u.undef.abfd; |
5012 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 5013 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
5014 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
5015 | ? BSF_WEAK | |
5016 | : BSF_GLOBAL); | |
5017 | ||
5018 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
5019 | fh->elf.root.root.string + 1, | |
5020 | flags, bfd_und_section_ptr, 0, | |
5021 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
5022 | return NULL; |
5023 | ||
5024 | fdh = (struct ppc_link_hash_entry *) bh; | |
5025 | fdh->elf.non_elf = 0; | |
908b32fc AM |
5026 | fdh->fake = 1; |
5027 | fdh->is_func_descriptor = 1; | |
5028 | fdh->oh = fh; | |
5029 | fh->is_func = 1; | |
5030 | fh->oh = fdh; | |
bb700d78 AM |
5031 | return fdh; |
5032 | } | |
5033 | ||
8387904d AM |
5034 | /* Fix function descriptor symbols defined in .opd sections to be |
5035 | function type. */ | |
555cd476 AM |
5036 | |
5037 | static bfd_boolean | |
c16153ae | 5038 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 5039 | struct bfd_link_info *info, |
555cd476 | 5040 | Elf_Internal_Sym *isym, |
6911b7dc | 5041 | const char **name, |
555cd476 AM |
5042 | flagword *flags ATTRIBUTE_UNUSED, |
5043 | asection **sec, | |
b53dfeb2 | 5044 | bfd_vma *value) |
555cd476 | 5045 | { |
b53dfeb2 | 5046 | if (*sec != NULL |
f1885d1e | 5047 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
5048 | { |
5049 | asection *code_sec; | |
5050 | ||
5051 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
5052 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
5053 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
5054 | ||
5055 | /* If the symbol is a function defined in .opd, and the function | |
5056 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 5057 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
5058 | && (*sec)->reloc_count != 0 |
5059 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
5060 | FALSE) != (bfd_vma) -1 | |
5061 | && discarded_section (code_sec)) | |
5062 | { | |
5063 | *sec = bfd_und_section_ptr; | |
5064 | isym->st_shndx = SHN_UNDEF; | |
5065 | } | |
5066 | } | |
dbd1e97e AM |
5067 | else if (*sec != NULL |
5068 | && strcmp ((*sec)->name, ".toc") == 0 | |
5069 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
5070 | { | |
5071 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5072 | if (htab != NULL) | |
5073 | htab->params->object_in_toc = 1; | |
5074 | } | |
433817dd | 5075 | |
6911b7dc AM |
5076 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5077 | { | |
5078 | if (abiversion (ibfd) == 0) | |
5079 | set_abiversion (ibfd, 2); | |
5080 | else if (abiversion (ibfd) == 1) | |
5081 | { | |
cf97bcb0 AM |
5082 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
5083 | " for ABI version 1"), *name); | |
6911b7dc AM |
5084 | bfd_set_error (bfd_error_bad_value); |
5085 | return FALSE; | |
5086 | } | |
5087 | } | |
5088 | ||
555cd476 AM |
5089 | return TRUE; |
5090 | } | |
5091 | ||
6911b7dc AM |
5092 | /* Merge non-visibility st_other attributes: local entry point. */ |
5093 | ||
5094 | static void | |
5095 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5096 | const Elf_Internal_Sym *isym, | |
5097 | bfd_boolean definition, | |
5098 | bfd_boolean dynamic) | |
5099 | { | |
f378ab09 | 5100 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
5101 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
5102 | | ELF_ST_VISIBILITY (h->other)); | |
5103 | } | |
5104 | ||
8c5b4e52 AM |
5105 | /* Hook called on merging a symbol. We use this to clear "fake" since |
5106 | we now have a real symbol. */ | |
5107 | ||
5108 | static bfd_boolean | |
5109 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 5110 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
5111 | asection **psec ATTRIBUTE_UNUSED, |
5112 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
5113 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
5114 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
5115 | const asection *oldsec ATTRIBUTE_UNUSED) | |
5116 | { | |
5117 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
5118 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5119 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
5120 | return TRUE; |
5121 | } | |
5122 | ||
8387904d | 5123 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
5124 | inclusion of a new ABI object archive that defines "bar". |
5125 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
5126 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
5127 | |
5128 | static struct elf_link_hash_entry * | |
5129 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
5130 | struct bfd_link_info *info, | |
5131 | const char *name) | |
5132 | { | |
5133 | struct elf_link_hash_entry *h; | |
5134 | char *dot_name; | |
5135 | size_t len; | |
5136 | ||
5137 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
5138 | if (h != NULL |
5139 | /* Don't return this sym if it is a fake function descriptor | |
5140 | created by add_symbol_adjust. */ | |
8c5b4e52 | 5141 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
5142 | return h; |
5143 | ||
5144 | if (name[0] == '.') | |
5145 | return h; | |
5146 | ||
5147 | len = strlen (name); | |
5148 | dot_name = bfd_alloc (abfd, len + 2); | |
5149 | if (dot_name == NULL) | |
e99955cd | 5150 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
5151 | dot_name[0] = '.'; |
5152 | memcpy (dot_name + 1, name, len + 1); | |
5153 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
5154 | bfd_release (abfd, dot_name); | |
5155 | return h; | |
5156 | } | |
5157 | ||
5158 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5159 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5160 | are made weak. This stops later archive searches from including an | |
5161 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5162 | prevents the linker complaining about undefined symbols. |
5163 | We also check and correct mismatched symbol visibility here. The | |
5164 | most restrictive visibility of the function descriptor and the | |
5165 | function entry symbol is used. */ | |
8387904d AM |
5166 | |
5167 | static bfd_boolean | |
b3fac117 | 5168 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5169 | { |
8387904d AM |
5170 | struct ppc_link_hash_table *htab; |
5171 | struct ppc_link_hash_entry *fdh; | |
5172 | ||
b3fac117 AM |
5173 | if (eh->elf.root.type == bfd_link_hash_warning) |
5174 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5175 | |
8400d40d AM |
5176 | if (eh->elf.root.type == bfd_link_hash_indirect) |
5177 | return TRUE; | |
5178 | ||
b3fac117 AM |
5179 | if (eh->elf.root.root.string[0] != '.') |
5180 | abort (); | |
8387904d | 5181 | |
b3fac117 | 5182 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5183 | if (htab == NULL) |
5184 | return FALSE; | |
5185 | ||
b31867b6 | 5186 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
5187 | if (fdh == NULL |
5188 | && !bfd_link_relocatable (info) | |
5189 | && (eh->elf.root.type == bfd_link_hash_undefined | |
5190 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5191 | && eh->elf.ref_regular) | |
5192 | { | |
5193 | /* Make an undefined function descriptor sym, in order to | |
5194 | pull in an --as-needed shared lib. Archives are handled | |
5195 | elsewhere. */ | |
5196 | fdh = make_fdh (info, eh); | |
5197 | if (fdh == NULL) | |
5198 | return FALSE; | |
bb700d78 | 5199 | } |
8c5b4e52 AM |
5200 | |
5201 | if (fdh != NULL) | |
8387904d | 5202 | { |
35b0ce59 AM |
5203 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5204 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
5205 | |
5206 | /* Make both descriptor and entry symbol have the most | |
5207 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
5208 | if (entry_vis < descr_vis) |
5209 | fdh->elf.other += entry_vis - descr_vis; | |
5210 | else if (entry_vis > descr_vis) | |
5211 | eh->elf.other += descr_vis - entry_vis; | |
5212 | ||
8c5b4e52 AM |
5213 | /* Propagate reference flags from entry symbol to function |
5214 | descriptor symbol. */ | |
bc4e12de | 5215 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 5216 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
5217 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
5218 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
5219 | ||
5220 | if (!fdh->elf.forced_local | |
5221 | && fdh->elf.dynindx == -1 | |
5222 | && fdh->elf.versioned != versioned_hidden | |
5223 | && (bfd_link_dll (info) | |
5224 | || fdh->elf.def_dynamic | |
5225 | || fdh->elf.ref_dynamic) | |
5226 | && (eh->elf.ref_regular | |
5227 | || eh->elf.def_regular)) | |
5228 | { | |
5229 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
5230 | return FALSE; | |
35b0ce59 | 5231 | } |
8387904d | 5232 | } |
99877b66 | 5233 | |
8387904d AM |
5234 | return TRUE; |
5235 | } | |
5236 | ||
f6c7c3e8 AM |
5237 | /* Set up opd section info and abiversion for IBFD, and process list |
5238 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5239 | |
8387904d | 5240 | static bfd_boolean |
f6c7c3e8 | 5241 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5242 | { |
99877b66 | 5243 | struct ppc_link_hash_table *htab; |
b3fac117 | 5244 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5245 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5246 | |
459609d6 | 5247 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5248 | { |
b9399fcf AM |
5249 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
5250 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
5251 | ||
459609d6 AM |
5252 | if (abiversion (ibfd) == 0) |
5253 | set_abiversion (ibfd, 1); | |
8a2058b5 | 5254 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 5255 | { |
695344c0 | 5256 | /* xgettext:c-format */ |
cf97bcb0 AM |
5257 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
5258 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
5259 | bfd_set_error (bfd_error_bad_value); |
5260 | return FALSE; | |
f6c7c3e8 | 5261 | } |
b9399fcf | 5262 | } |
f6c7c3e8 | 5263 | |
b9399fcf AM |
5264 | if (is_ppc64_elf (info->output_bfd)) |
5265 | { | |
5266 | /* For input files without an explicit abiversion in e_flags | |
5267 | we should have flagged any with symbol st_other bits set | |
5268 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5269 | Set the output abiversion if not yet set, and for any input | |
5270 | still ambiguous, take its abiversion from the output. | |
5271 | Differences in ABI are reported later. */ | |
5272 | if (abiversion (info->output_bfd) == 0) | |
5273 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5274 | else if (abiversion (ibfd) == 0) | |
5275 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
5276 | } |
5277 | ||
459609d6 AM |
5278 | htab = ppc_hash_table (info); |
5279 | if (htab == NULL) | |
b9399fcf | 5280 | return TRUE; |
459609d6 | 5281 | |
b9399fcf AM |
5282 | if (opd != NULL && opd->size != 0 |
5283 | && (ibfd->flags & DYNAMIC) == 0 | |
5284 | && (opd->flags & SEC_RELOC) != 0 | |
5285 | && opd->reloc_count != 0 | |
5286 | && !bfd_is_abs_section (opd->output_section) | |
5287 | && info->gc_sections) | |
5288 | { | |
5289 | /* Garbage collection needs some extra help with .opd sections. | |
5290 | We don't want to necessarily keep everything referenced by | |
5291 | relocs in .opd, as that would keep all functions. Instead, | |
5292 | if we reference an .opd symbol (a function descriptor), we | |
5293 | want to keep the function code symbol's section. This is | |
5294 | easy for global symbols, but for local syms we need to keep | |
5295 | information about the associated function section. */ | |
5296 | bfd_size_type amt; | |
5297 | asection **opd_sym_map; | |
5298 | Elf_Internal_Shdr *symtab_hdr; | |
5299 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
5300 | ||
5301 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
5302 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
5303 | if (opd_sym_map == NULL) | |
5304 | return FALSE; | |
5305 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
5306 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
5307 | info->keep_memory); | |
5308 | if (relocs == NULL) | |
5309 | return FALSE; | |
5310 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5311 | rel_end = relocs + opd->reloc_count - 1; | |
5312 | for (rel = relocs; rel < rel_end; rel++) | |
5313 | { | |
5314 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
5315 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
5316 | ||
5317 | if (r_type == R_PPC64_ADDR64 | |
5318 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
5319 | && r_symndx < symtab_hdr->sh_info) | |
5320 | { | |
5321 | Elf_Internal_Sym *isym; | |
5322 | asection *s; | |
5323 | ||
5324 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
5325 | if (isym == NULL) | |
5326 | { | |
5327 | if (elf_section_data (opd)->relocs != relocs) | |
5328 | free (relocs); | |
5329 | return FALSE; | |
5330 | } | |
5331 | ||
5332 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
5333 | if (s != NULL && s != opd) | |
5334 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
5335 | } | |
5336 | } | |
5337 | if (elf_section_data (opd)->relocs != relocs) | |
5338 | free (relocs); | |
5339 | } | |
459609d6 AM |
5340 | |
5341 | p = &htab->dot_syms; | |
5342 | while ((eh = *p) != NULL) | |
5343 | { | |
5344 | *p = NULL; | |
5345 | if (&eh->elf == htab->elf.hgot) | |
5346 | ; | |
5347 | else if (htab->elf.hgot == NULL | |
5348 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5349 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
5350 | else if (abiversion (ibfd) <= 1) |
5351 | { | |
5352 | htab->need_func_desc_adj = 1; | |
5353 | if (!add_symbol_adjust (eh, info)) | |
5354 | return FALSE; | |
5355 | } | |
459609d6 AM |
5356 | p = &eh->u.next_dot_sym; |
5357 | } | |
b3fac117 | 5358 | return TRUE; |
8387904d AM |
5359 | } |
5360 | ||
97fed1c9 JJ |
5361 | /* Undo hash table changes when an --as-needed input file is determined |
5362 | not to be needed. */ | |
5363 | ||
5364 | static bfd_boolean | |
e5034e59 AM |
5365 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5366 | struct bfd_link_info *info, | |
5367 | enum notice_asneeded_action act) | |
97fed1c9 | 5368 | { |
e5034e59 AM |
5369 | if (act == notice_not_needed) |
5370 | { | |
5371 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5372 | |
e5034e59 AM |
5373 | if (htab == NULL) |
5374 | return FALSE; | |
4dfe6ac6 | 5375 | |
e5034e59 AM |
5376 | htab->dot_syms = NULL; |
5377 | } | |
5378 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5379 | } |
5380 | ||
aa374f67 AM |
5381 | /* If --just-symbols against a final linked binary, then assume we need |
5382 | toc adjusting stubs when calling functions defined there. */ | |
5383 | ||
5384 | static void | |
5385 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5386 | { | |
5387 | if ((sec->flags & SEC_CODE) != 0 | |
5388 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5389 | && is_ppc64_elf (sec->owner)) | |
5390 | { | |
2c3f079f AM |
5391 | if (abiversion (sec->owner) >= 2 |
5392 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5393 | sec->has_toc_reloc = 1; |
5394 | } | |
5395 | _bfd_elf_link_just_syms (sec, info); | |
5396 | } | |
5397 | ||
e054468f | 5398 | static struct plt_entry ** |
4ce794b7 AM |
5399 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5400 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5401 | { |
5402 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5403 | struct plt_entry **local_plt; |
f961d9dd | 5404 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5405 | |
5406 | if (local_got_ents == NULL) | |
5407 | { | |
5408 | bfd_size_type size = symtab_hdr->sh_info; | |
5409 | ||
e054468f AM |
5410 | size *= (sizeof (*local_got_ents) |
5411 | + sizeof (*local_plt) | |
5412 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5413 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5414 | if (local_got_ents == NULL) |
e054468f | 5415 | return NULL; |
411e1bfb AM |
5416 | elf_local_got_ents (abfd) = local_got_ents; |
5417 | } | |
5418 | ||
37da22e5 | 5419 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5420 | { |
5421 | struct got_entry *ent; | |
5422 | ||
5423 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5424 | if (ent->addend == r_addend |
5425 | && ent->owner == abfd | |
5426 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5427 | break; |
5428 | if (ent == NULL) | |
5429 | { | |
5430 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5431 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5432 | if (ent == NULL) |
5433 | return FALSE; | |
5434 | ent->next = local_got_ents[r_symndx]; | |
5435 | ent->addend = r_addend; | |
e717da7e | 5436 | ent->owner = abfd; |
411e1bfb | 5437 | ent->tls_type = tls_type; |
927be08e | 5438 | ent->is_indirect = FALSE; |
411e1bfb AM |
5439 | ent->got.refcount = 0; |
5440 | local_got_ents[r_symndx] = ent; | |
5441 | } | |
5442 | ent->got.refcount += 1; | |
5443 | } | |
5444 | ||
e054468f | 5445 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5446 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 5447 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
5448 | |
5449 | return local_plt + r_symndx; | |
65f38f15 AM |
5450 | } |
5451 | ||
411e1bfb | 5452 | static bfd_boolean |
e054468f | 5453 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5454 | { |
411e1bfb | 5455 | struct plt_entry *ent; |
1e2f5b6e | 5456 | |
e054468f | 5457 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5458 | if (ent->addend == addend) |
5459 | break; | |
5460 | if (ent == NULL) | |
1e2f5b6e | 5461 | { |
411e1bfb | 5462 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5463 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5464 | if (ent == NULL) |
5465 | return FALSE; | |
e054468f | 5466 | ent->next = *plist; |
411e1bfb AM |
5467 | ent->addend = addend; |
5468 | ent->plt.refcount = 0; | |
e054468f | 5469 | *plist = ent; |
1e2f5b6e | 5470 | } |
411e1bfb | 5471 | ent->plt.refcount += 1; |
b34976b6 | 5472 | return TRUE; |
1e2f5b6e AM |
5473 | } |
5474 | ||
e054468f AM |
5475 | static bfd_boolean |
5476 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5477 | { | |
5478 | return (r_type == R_PPC64_REL24 | |
5479 | || r_type == R_PPC64_REL14 | |
5480 | || r_type == R_PPC64_REL14_BRTAKEN | |
5481 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5482 | || r_type == R_PPC64_ADDR24 | |
5483 | || r_type == R_PPC64_ADDR14 | |
5484 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d AM |
5485 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5486 | || r_type == R_PPC64_PLTCALL); | |
5487 | } | |
5488 | ||
5489 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
5490 | ||
5491 | static bfd_boolean | |
5492 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
5493 | { | |
5494 | return (r_type == R_PPC64_PLT16_HA | |
5495 | || r_type == R_PPC64_PLT16_HI | |
5496 | || r_type == R_PPC64_PLT16_LO | |
5497 | || r_type == R_PPC64_PLT16_LO_DS | |
5498 | || r_type == R_PPC64_PLTSEQ); | |
e054468f AM |
5499 | } |
5500 | ||
5bd4f169 | 5501 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5502 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5503 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5504 | |
b34976b6 | 5505 | static bfd_boolean |
4ce794b7 AM |
5506 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5507 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5508 | { |
65f38f15 | 5509 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5510 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5511 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5512 | const Elf_Internal_Rela *rel; |
5513 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5514 | asection *sreloc; |
3a71aa26 | 5515 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 5516 | bfd_boolean is_opd; |
5bd4f169 | 5517 | |
0e1862bb | 5518 | if (bfd_link_relocatable (info)) |
b34976b6 | 5519 | return TRUE; |
5bd4f169 | 5520 | |
680a3378 AM |
5521 | /* Don't do anything special with non-loaded, non-alloced sections. |
5522 | In particular, any relocs in such sections should not affect GOT | |
5523 | and PLT reference counting (ie. we don't allow them to create GOT | |
5524 | or PLT entries), there's no possibility or desire to optimize TLS | |
5525 | relocs, and there's not much point in propagating relocs to shared | |
5526 | libs that the dynamic linker won't relocate. */ | |
5527 | if ((sec->flags & SEC_ALLOC) == 0) | |
5528 | return TRUE; | |
5529 | ||
0c8d6e5c | 5530 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5531 | |
65f38f15 | 5532 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5533 | if (htab == NULL) |
5534 | return FALSE; | |
5535 | ||
3a71aa26 AM |
5536 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5537 | FALSE, FALSE, TRUE); | |
5538 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5539 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5540 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5541 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5542 | sreloc = NULL; |
b9399fcf | 5543 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
5544 | rel_end = relocs + sec->reloc_count; |
5545 | for (rel = relocs; rel < rel_end; rel++) | |
5546 | { | |
5547 | unsigned long r_symndx; | |
5548 | struct elf_link_hash_entry *h; | |
04c9666a | 5549 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5550 | int tls_type; |
7c8fe5c4 | 5551 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5552 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5553 | |
5554 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5555 | if (r_symndx < symtab_hdr->sh_info) | |
5556 | h = NULL; | |
5557 | else | |
973a3492 L |
5558 | { |
5559 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5560 | h = elf_follow_link (h); |
1c865ab2 AM |
5561 | |
5562 | if (h == htab->elf.hgot) | |
5563 | sec->has_toc_reloc = 1; | |
973a3492 | 5564 | } |
5bd4f169 | 5565 | |
727fc41e | 5566 | tls_type = 0; |
e054468f | 5567 | ifunc = NULL; |
25f23106 AM |
5568 | if (h != NULL) |
5569 | { | |
5570 | if (h->type == STT_GNU_IFUNC) | |
5571 | { | |
5572 | h->needs_plt = 1; | |
5573 | ifunc = &h->plt.plist; | |
5574 | } | |
5575 | } | |
5576 | else | |
5577 | { | |
5578 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5579 | abfd, r_symndx); | |
5580 | if (isym == NULL) | |
5581 | return FALSE; | |
5582 | ||
5583 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5584 | { | |
5585 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
37da22e5 AM |
5586 | rel->r_addend, |
5587 | NON_GOT | PLT_IFUNC); | |
25f23106 AM |
5588 | if (ifunc == NULL) |
5589 | return FALSE; | |
5590 | } | |
5591 | } | |
727fc41e | 5592 | |
cbf95972 | 5593 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5594 | switch (r_type) |
5bd4f169 | 5595 | { |
727fc41e AM |
5596 | case R_PPC64_TLSGD: |
5597 | case R_PPC64_TLSLD: | |
5598 | /* These special tls relocs tie a call to __tls_get_addr with | |
5599 | its parameter symbol. */ | |
37da22e5 AM |
5600 | if (h != NULL) |
5601 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
5602 | else | |
5603 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5604 | rel->r_addend, | |
5605 | NON_GOT | TLS_TLS | TLS_MARK)) | |
5606 | return FALSE; | |
5607 | sec->has_tls_reloc = 1; | |
727fc41e AM |
5608 | break; |
5609 | ||
411e1bfb AM |
5610 | case R_PPC64_GOT_TLSLD16: |
5611 | case R_PPC64_GOT_TLSLD16_LO: | |
5612 | case R_PPC64_GOT_TLSLD16_HI: | |
5613 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5614 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5615 | goto dogottls; |
5616 | ||
5617 | case R_PPC64_GOT_TLSGD16: | |
5618 | case R_PPC64_GOT_TLSGD16_LO: | |
5619 | case R_PPC64_GOT_TLSGD16_HI: | |
5620 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5621 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5622 | goto dogottls; |
5623 | ||
5624 | case R_PPC64_GOT_TPREL16_DS: | |
5625 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5626 | case R_PPC64_GOT_TPREL16_HI: | |
5627 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 5628 | if (bfd_link_dll (info)) |
411e1bfb AM |
5629 | info->flags |= DF_STATIC_TLS; |
5630 | tls_type = TLS_TLS | TLS_TPREL; | |
5631 | goto dogottls; | |
5632 | ||
5633 | case R_PPC64_GOT_DTPREL16_DS: | |
5634 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5635 | case R_PPC64_GOT_DTPREL16_HI: | |
5636 | case R_PPC64_GOT_DTPREL16_HA: | |
5637 | tls_type = TLS_TLS | TLS_DTPREL; | |
5638 | dogottls: | |
5639 | sec->has_tls_reloc = 1; | |
1a0670f3 | 5640 | /* Fall through */ |
411e1bfb | 5641 | |
5bd4f169 | 5642 | case R_PPC64_GOT16: |
5bd4f169 | 5643 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5644 | case R_PPC64_GOT16_HA: |
5645 | case R_PPC64_GOT16_HI: | |
5646 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5647 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5648 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5649 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5650 | if (r_type == R_PPC64_GOT_TLSLD16 |
5651 | || r_type == R_PPC64_GOT_TLSGD16 | |
5652 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5653 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5654 | || r_type == R_PPC64_GOT16 | |
5655 | || r_type == R_PPC64_GOT16_DS) | |
5656 | { | |
5657 | htab->do_multi_toc = 1; | |
d77c8a4b | 5658 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5659 | } |
5660 | ||
e717da7e AM |
5661 | if (ppc64_elf_tdata (abfd)->got == NULL |
5662 | && !create_got_section (abfd, info)) | |
b34976b6 | 5663 | return FALSE; |
5bd4f169 AM |
5664 | |
5665 | if (h != NULL) | |
5666 | { | |
411e1bfb AM |
5667 | struct ppc_link_hash_entry *eh; |
5668 | struct got_entry *ent; | |
65f38f15 | 5669 | |
411e1bfb AM |
5670 | eh = (struct ppc_link_hash_entry *) h; |
5671 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5672 | if (ent->addend == rel->r_addend | |
e717da7e | 5673 | && ent->owner == abfd |
411e1bfb AM |
5674 | && ent->tls_type == tls_type) |
5675 | break; | |
5676 | if (ent == NULL) | |
5bd4f169 | 5677 | { |
411e1bfb | 5678 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5679 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5680 | if (ent == NULL) |
b34976b6 | 5681 | return FALSE; |
411e1bfb AM |
5682 | ent->next = eh->elf.got.glist; |
5683 | ent->addend = rel->r_addend; | |
e717da7e | 5684 | ent->owner = abfd; |
411e1bfb | 5685 | ent->tls_type = tls_type; |
927be08e | 5686 | ent->is_indirect = FALSE; |
411e1bfb AM |
5687 | ent->got.refcount = 0; |
5688 | eh->elf.got.glist = ent; | |
5bd4f169 | 5689 | } |
411e1bfb | 5690 | ent->got.refcount += 1; |
e7b938ca | 5691 | eh->tls_mask |= tls_type; |
5bd4f169 | 5692 | } |
411e1bfb AM |
5693 | else |
5694 | /* This is a global offset table entry for a local symbol. */ | |
5695 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5696 | rel->r_addend, tls_type)) | |
5697 | return FALSE; | |
a345bc8d AM |
5698 | |
5699 | /* We may also need a plt entry if the symbol turns out to be | |
5700 | an ifunc. */ | |
0e1862bb | 5701 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5702 | { |
5703 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5704 | return FALSE; | |
5705 | } | |
5bd4f169 AM |
5706 | break; |
5707 | ||
5bd4f169 | 5708 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5709 | case R_PPC64_PLT16_HI: |
5710 | case R_PPC64_PLT16_LO: | |
08be3224 | 5711 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
5712 | case R_PPC64_PLT32: |
5713 | case R_PPC64_PLT64: | |
cbf95972 AM |
5714 | /* This symbol requires a procedure linkage table entry. */ |
5715 | plt_list = ifunc; | |
5716 | if (h != NULL) | |
e054468f | 5717 | { |
e054468f AM |
5718 | h->needs_plt = 1; |
5719 | if (h->root.root.string[0] == '.' | |
5720 | && h->root.root.string[1] != '\0') | |
5721 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 5722 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
5723 | plt_list = &h->plt.plist; |
5724 | } | |
5725 | if (plt_list == NULL) | |
2d7ad24e AM |
5726 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
5727 | rel->r_addend, | |
5728 | NON_GOT | PLT_KEEP); | |
cbf95972 AM |
5729 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5730 | return FALSE; | |
5bd4f169 AM |
5731 | break; |
5732 | ||
5733 | /* The following relocations don't need to propagate the | |
5734 | relocation if linking a shared object since they are | |
5735 | section relative. */ | |
5736 | case R_PPC64_SECTOFF: | |
5737 | case R_PPC64_SECTOFF_LO: | |
5738 | case R_PPC64_SECTOFF_HI: | |
5739 | case R_PPC64_SECTOFF_HA: | |
5740 | case R_PPC64_SECTOFF_DS: | |
5741 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5742 | case R_PPC64_DTPREL16: |
5743 | case R_PPC64_DTPREL16_LO: | |
5744 | case R_PPC64_DTPREL16_HI: | |
5745 | case R_PPC64_DTPREL16_HA: | |
5746 | case R_PPC64_DTPREL16_DS: | |
5747 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5748 | case R_PPC64_DTPREL16_HIGH: |
5749 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5750 | case R_PPC64_DTPREL16_HIGHER: |
5751 | case R_PPC64_DTPREL16_HIGHERA: | |
5752 | case R_PPC64_DTPREL16_HIGHEST: | |
5753 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5754 | break; |
5755 | ||
ad8e1ba5 | 5756 | /* Nor do these. */ |
25f23106 AM |
5757 | case R_PPC64_REL16: |
5758 | case R_PPC64_REL16_LO: | |
5759 | case R_PPC64_REL16_HI: | |
5760 | case R_PPC64_REL16_HA: | |
a680de9a | 5761 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5762 | break; |
5763 | ||
45965137 AM |
5764 | /* Not supported as a dynamic relocation. */ |
5765 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5766 | if (bfd_link_pic (info)) |
45965137 AM |
5767 | { |
5768 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5769 | ppc_howto_init (); | |
695344c0 | 5770 | /* xgettext:c-format */ |
174d0a74 | 5771 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 5772 | "in shared libraries and PIEs\n"), |
45965137 AM |
5773 | abfd, sec, rel->r_offset, |
5774 | ppc64_elf_howto_table[r_type]->name); | |
5775 | bfd_set_error (bfd_error_bad_value); | |
5776 | return FALSE; | |
5777 | } | |
5778 | break; | |
5779 | ||
ad8e1ba5 | 5780 | case R_PPC64_TOC16: |
33c0ec9d AM |
5781 | case R_PPC64_TOC16_DS: |
5782 | htab->do_multi_toc = 1; | |
d77c8a4b | 5783 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5784 | /* Fall through. */ |
ad8e1ba5 AM |
5785 | case R_PPC64_TOC16_LO: |
5786 | case R_PPC64_TOC16_HI: | |
5787 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5788 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5789 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5790 | break; |
5791 | ||
006589cf AM |
5792 | /* Marker reloc. */ |
5793 | case R_PPC64_ENTRY: | |
5794 | break; | |
5795 | ||
5bd4f169 AM |
5796 | /* This relocation describes the C++ object vtable hierarchy. |
5797 | Reconstruct it for later use during GC. */ | |
5798 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5799 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5800 | return FALSE; |
5bd4f169 AM |
5801 | break; |
5802 | ||
5803 | /* This relocation describes which C++ vtable entries are actually | |
5804 | used. Record for later use during GC. */ | |
5805 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5806 | BFD_ASSERT (h != NULL); |
5807 | if (h != NULL | |
5808 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5809 | return FALSE; |
5bd4f169 AM |
5810 | break; |
5811 | ||
721956f4 AM |
5812 | case R_PPC64_REL14: |
5813 | case R_PPC64_REL14_BRTAKEN: | |
5814 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5815 | { |
5816 | asection *dest = NULL; | |
5817 | ||
5818 | /* Heuristic: If jumping outside our section, chances are | |
5819 | we are going to need a stub. */ | |
5820 | if (h != NULL) | |
5821 | { | |
5822 | /* If the sym is weak it may be overridden later, so | |
5823 | don't assume we know where a weak sym lives. */ | |
5824 | if (h->root.type == bfd_link_hash_defined) | |
5825 | dest = h->root.u.def.section; | |
5826 | } | |
5827 | else | |
87d72d41 AM |
5828 | { |
5829 | Elf_Internal_Sym *isym; | |
5830 | ||
5831 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5832 | abfd, r_symndx); | |
5833 | if (isym == NULL) | |
5834 | return FALSE; | |
5835 | ||
5836 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5837 | } | |
5838 | ||
220c76dd | 5839 | if (dest != sec) |
7c8fe5c4 | 5840 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5841 | } |
3e04d765 AM |
5842 | goto rel24; |
5843 | ||
5844 | case R_PPC64_PLTCALL: | |
5845 | ppc64_elf_section_data (sec)->has_pltcall = 1; | |
721956f4 AM |
5846 | /* Fall through. */ |
5847 | ||
5d1634d7 | 5848 | case R_PPC64_REL24: |
3e04d765 | 5849 | rel24: |
cbf95972 AM |
5850 | plt_list = ifunc; |
5851 | if (h != NULL) | |
5d1634d7 | 5852 | { |
e054468f AM |
5853 | h->needs_plt = 1; |
5854 | if (h->root.root.string[0] == '.' | |
5855 | && h->root.root.string[1] != '\0') | |
5856 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5857 | |
3a71aa26 | 5858 | if (h == tga || h == dottga) |
cbf95972 AM |
5859 | { |
5860 | sec->has_tls_reloc = 1; | |
5861 | if (rel != relocs | |
5862 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5863 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5864 | /* We have a new-style __tls_get_addr call with | |
5865 | a marker reloc. */ | |
5866 | ; | |
5867 | else | |
5868 | /* Mark this section as having an old-style call. */ | |
5869 | sec->has_tls_get_addr_call = 1; | |
5870 | } | |
5871 | plt_list = &h->plt.plist; | |
411e1bfb | 5872 | } |
cbf95972 AM |
5873 | |
5874 | /* We may need a .plt entry if the function this reloc | |
5875 | refers to is in a shared lib. */ | |
5876 | if (plt_list | |
5877 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5878 | return FALSE; | |
411e1bfb AM |
5879 | break; |
5880 | ||
cbf95972 AM |
5881 | case R_PPC64_ADDR14: |
5882 | case R_PPC64_ADDR14_BRNTAKEN: | |
5883 | case R_PPC64_ADDR14_BRTAKEN: | |
5884 | case R_PPC64_ADDR24: | |
5885 | goto dodyn; | |
5886 | ||
411e1bfb AM |
5887 | case R_PPC64_TPREL64: |
5888 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5889 | if (bfd_link_dll (info)) |
411e1bfb AM |
5890 | info->flags |= DF_STATIC_TLS; |
5891 | goto dotlstoc; | |
5892 | ||
5893 | case R_PPC64_DTPMOD64: | |
5894 | if (rel + 1 < rel_end | |
5895 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5896 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5897 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5898 | else |
951fd09b | 5899 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5900 | goto dotlstoc; |
5901 | ||
5902 | case R_PPC64_DTPREL64: | |
5903 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5904 | if (rel != relocs | |
5905 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5906 | && rel[-1].r_offset == rel->r_offset - 8) | |
5907 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5908 | Don't mark with TLS_DTPREL. */ | |
5909 | goto dodyn; | |
5910 | ||
5911 | dotlstoc: | |
5912 | sec->has_tls_reloc = 1; | |
5913 | if (h != NULL) | |
5914 | { | |
5915 | struct ppc_link_hash_entry *eh; | |
5916 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5917 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5918 | } |
5919 | else | |
5920 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5921 | rel->r_addend, tls_type)) | |
5922 | return FALSE; | |
5923 | ||
7c8fe5c4 AM |
5924 | ppc64_sec = ppc64_elf_section_data (sec); |
5925 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5926 | { |
3a71aa26 AM |
5927 | bfd_size_type amt; |
5928 | ||
e7b938ca | 5929 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5930 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5931 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5932 | if (ppc64_sec->u.toc.symndx == NULL) | |
5933 | return FALSE; | |
5934 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5935 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5936 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5937 | return FALSE; |
7c8fe5c4 AM |
5938 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5939 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5940 | } |
5941 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5942 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5943 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5944 | |
5945 | /* Mark the second slot of a GD or LD entry. | |
5946 | -1 to indicate GD and -2 to indicate LD. */ | |
5947 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5948 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5949 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5950 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5951 | goto dodyn; |
5952 | ||
5953 | case R_PPC64_TPREL16: | |
5954 | case R_PPC64_TPREL16_LO: | |
5955 | case R_PPC64_TPREL16_HI: | |
5956 | case R_PPC64_TPREL16_HA: | |
5957 | case R_PPC64_TPREL16_DS: | |
5958 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5959 | case R_PPC64_TPREL16_HIGH: |
5960 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5961 | case R_PPC64_TPREL16_HIGHER: |
5962 | case R_PPC64_TPREL16_HIGHERA: | |
5963 | case R_PPC64_TPREL16_HIGHEST: | |
5964 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
5965 | if (bfd_link_dll (info)) |
5966 | info->flags |= DF_STATIC_TLS; | |
5967 | goto dodyn; | |
5d1634d7 | 5968 | |
e86ce104 | 5969 | case R_PPC64_ADDR64: |
b9399fcf | 5970 | if (is_opd |
1e2f5b6e | 5971 | && rel + 1 < rel_end |
4ce794b7 | 5972 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5973 | { |
8387904d | 5974 | if (h != NULL) |
8c5b4e52 | 5975 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 5976 | } |
e86ce104 AM |
5977 | /* Fall through. */ |
5978 | ||
65f38f15 AM |
5979 | case R_PPC64_ADDR16: |
5980 | case R_PPC64_ADDR16_DS: | |
5981 | case R_PPC64_ADDR16_HA: | |
5982 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5983 | case R_PPC64_ADDR16_HIGH: |
5984 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5985 | case R_PPC64_ADDR16_HIGHER: |
5986 | case R_PPC64_ADDR16_HIGHERA: | |
5987 | case R_PPC64_ADDR16_HIGHEST: | |
5988 | case R_PPC64_ADDR16_HIGHESTA: | |
5989 | case R_PPC64_ADDR16_LO: | |
5990 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5991 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5992 | && rel->r_addend == 0) |
5993 | { | |
5994 | /* We may need a .plt entry if this reloc refers to a | |
5995 | function in a shared lib. */ | |
5996 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5997 | return FALSE; | |
5998 | h->pointer_equality_needed = 1; | |
5999 | } | |
6000 | /* Fall through. */ | |
6001 | ||
6002 | case R_PPC64_REL30: | |
6003 | case R_PPC64_REL32: | |
6004 | case R_PPC64_REL64: | |
65f38f15 | 6005 | case R_PPC64_ADDR32: |
65f38f15 AM |
6006 | case R_PPC64_UADDR16: |
6007 | case R_PPC64_UADDR32: | |
6008 | case R_PPC64_UADDR64: | |
5bd4f169 | 6009 | case R_PPC64_TOC: |
0e1862bb | 6010 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 6011 | /* We may need a copy reloc. */ |
f5385ebf | 6012 | h->non_got_ref = 1; |
81848ca0 | 6013 | |
41bd81ab | 6014 | /* Don't propagate .opd relocs. */ |
b9399fcf | 6015 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 6016 | break; |
e86ce104 | 6017 | |
65f38f15 AM |
6018 | /* If we are creating a shared library, and this is a reloc |
6019 | against a global symbol, or a non PC relative reloc | |
6020 | against a local symbol, then we need to copy the reloc | |
6021 | into the shared library. However, if we are linking with | |
6022 | -Bsymbolic, we do not need to copy a reloc against a | |
6023 | global symbol which is defined in an object we are | |
6024 | including in the link (i.e., DEF_REGULAR is set). At | |
6025 | this point we have not seen all the input files, so it is | |
6026 | possible that DEF_REGULAR is not set now but will be set | |
6027 | later (it is never cleared). In case of a weak definition, | |
6028 | DEF_REGULAR may be cleared later by a strong definition in | |
6029 | a shared library. We account for that possibility below by | |
f4656909 | 6030 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
6031 | table entry. A similar situation occurs when creating |
6032 | shared libraries and symbol visibility changes render the | |
6033 | symbol local. | |
6034 | ||
6035 | If on the other hand, we are creating an executable, we | |
6036 | may need to keep relocations for symbols satisfied by a | |
6037 | dynamic library if we manage to avoid copy relocs for the | |
6038 | symbol. */ | |
411e1bfb | 6039 | dodyn: |
0e1862bb | 6040 | if ((bfd_link_pic (info) |
1d483afe | 6041 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 6042 | || (h != NULL |
198f1157 | 6043 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 6044 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 6045 | || !h->def_regular)))) |
f4656909 | 6046 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 6047 | && !bfd_link_pic (info) |
65f38f15 AM |
6048 | && h != NULL |
6049 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 6050 | || !h->def_regular)) |
0e1862bb | 6051 | || (!bfd_link_pic (info) |
25f23106 | 6052 | && ifunc != NULL)) |
5bd4f169 | 6053 | { |
65f38f15 AM |
6054 | /* We must copy these reloc types into the output file. |
6055 | Create a reloc section in dynobj and make room for | |
6056 | this reloc. */ | |
5bd4f169 AM |
6057 | if (sreloc == NULL) |
6058 | { | |
83bac4b0 NC |
6059 | sreloc = _bfd_elf_make_dynamic_reloc_section |
6060 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 6061 | |
5bd4f169 | 6062 | if (sreloc == NULL) |
83bac4b0 | 6063 | return FALSE; |
5bd4f169 AM |
6064 | } |
6065 | ||
65f38f15 AM |
6066 | /* If this is a global symbol, we count the number of |
6067 | relocations we need for this symbol. */ | |
6068 | if (h != NULL) | |
6069 | { | |
19e08130 AM |
6070 | struct elf_dyn_relocs *p; |
6071 | struct elf_dyn_relocs **head; | |
6072 | ||
ec338859 | 6073 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
6074 | p = *head; |
6075 | if (p == NULL || p->sec != sec) | |
6076 | { | |
6077 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6078 | if (p == NULL) | |
6079 | return FALSE; | |
6080 | p->next = *head; | |
6081 | *head = p; | |
6082 | p->sec = sec; | |
6083 | p->count = 0; | |
6084 | p->pc_count = 0; | |
6085 | } | |
6086 | p->count += 1; | |
6087 | if (!must_be_dyn_reloc (info, r_type)) | |
6088 | p->pc_count += 1; | |
65f38f15 AM |
6089 | } |
6090 | else | |
6091 | { | |
ec338859 AM |
6092 | /* Track dynamic relocs needed for local syms too. |
6093 | We really need local syms available to do this | |
6094 | easily. Oh well. */ | |
19e08130 AM |
6095 | struct ppc_dyn_relocs *p; |
6096 | struct ppc_dyn_relocs **head; | |
6097 | bfd_boolean is_ifunc; | |
ec338859 | 6098 | asection *s; |
6edfbbad | 6099 | void *vpp; |
87d72d41 | 6100 | Elf_Internal_Sym *isym; |
6edfbbad | 6101 | |
87d72d41 AM |
6102 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6103 | abfd, r_symndx); | |
6104 | if (isym == NULL) | |
b34976b6 | 6105 | return FALSE; |
ec338859 | 6106 | |
87d72d41 AM |
6107 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
6108 | if (s == NULL) | |
6109 | s = sec; | |
6110 | ||
6edfbbad | 6111 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
6112 | head = (struct ppc_dyn_relocs **) vpp; |
6113 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
6114 | p = *head; | |
6115 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
6116 | p = p->next; | |
6117 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
6118 | { | |
6119 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6120 | if (p == NULL) | |
6121 | return FALSE; | |
6122 | p->next = *head; | |
6123 | *head = p; | |
6124 | p->sec = sec; | |
6125 | p->ifunc = is_ifunc; | |
6126 | p->count = 0; | |
6127 | } | |
6128 | p->count += 1; | |
ec338859 | 6129 | } |
65f38f15 | 6130 | } |
5bd4f169 | 6131 | break; |
65f38f15 AM |
6132 | |
6133 | default: | |
96e0dda4 | 6134 | break; |
5bd4f169 AM |
6135 | } |
6136 | } | |
6137 | ||
b34976b6 | 6138 | return TRUE; |
5bd4f169 AM |
6139 | } |
6140 | ||
ee67d69a AM |
6141 | /* Merge backend specific data from an object file to the output |
6142 | object file when linking. */ | |
6143 | ||
6144 | static bfd_boolean | |
50e03d47 | 6145 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 6146 | { |
50e03d47 | 6147 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
6148 | unsigned long iflags, oflags; |
6149 | ||
6150 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
6151 | return TRUE; | |
6152 | ||
6153 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
6154 | return TRUE; | |
6155 | ||
50e03d47 | 6156 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
6157 | return FALSE; |
6158 | ||
6159 | iflags = elf_elfheader (ibfd)->e_flags; | |
6160 | oflags = elf_elfheader (obfd)->e_flags; | |
6161 | ||
f6c7c3e8 | 6162 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 6163 | { |
4eca0228 | 6164 | _bfd_error_handler |
695344c0 | 6165 | /* xgettext:c-format */ |
871b3ab2 | 6166 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
6167 | bfd_set_error (bfd_error_bad_value); |
6168 | return FALSE; | |
6169 | } | |
f6c7c3e8 | 6170 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 6171 | { |
4eca0228 | 6172 | _bfd_error_handler |
695344c0 | 6173 | /* xgettext:c-format */ |
871b3ab2 | 6174 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
6175 | ibfd, iflags, oflags); |
6176 | bfd_set_error (bfd_error_bad_value); | |
6177 | return FALSE; | |
6178 | } | |
6179 | ||
50e03d47 | 6180 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 6181 | |
ee67d69a | 6182 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 6183 | _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
6184 | |
6185 | return TRUE; | |
6186 | } | |
6187 | ||
6188 | static bfd_boolean | |
6189 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6190 | { | |
6191 | /* Print normal ELF private data. */ | |
6192 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6193 | ||
6194 | if (elf_elfheader (abfd)->e_flags != 0) | |
6195 | { | |
6196 | FILE *file = ptr; | |
6197 | ||
ee67d69a AM |
6198 | fprintf (file, _("private flags = 0x%lx:"), |
6199 | elf_elfheader (abfd)->e_flags); | |
6200 | ||
6201 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6202 | fprintf (file, _(" [abiv%ld]"), | |
6203 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6204 | fputc ('\n', file); | |
6205 | } | |
6206 | ||
6207 | return TRUE; | |
6208 | } | |
6209 | ||
8387904d | 6210 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6211 | of the code entry point, and its section, which must be in the same |
6212 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6213 | |
6214 | static bfd_vma | |
6215 | opd_entry_value (asection *opd_sec, | |
6216 | bfd_vma offset, | |
6217 | asection **code_sec, | |
aef36ac1 AM |
6218 | bfd_vma *code_off, |
6219 | bfd_boolean in_code_sec) | |
8387904d AM |
6220 | { |
6221 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6222 | Elf_Internal_Rela *relocs; |
8387904d | 6223 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6224 | bfd_vma val; |
8387904d | 6225 | |
9f296da3 AM |
6226 | /* No relocs implies we are linking a --just-symbols object, or looking |
6227 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6228 | if (opd_sec->reloc_count == 0) |
6229 | { | |
729eabd5 | 6230 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6231 | |
729eabd5 AM |
6232 | if (contents == NULL) |
6233 | { | |
6234 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6235 | return (bfd_vma) -1; | |
6236 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6237 | } | |
ee1e4ede | 6238 | |
dbb3fbbb | 6239 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6240 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6241 | return (bfd_vma) -1; |
6242 | ||
729eabd5 | 6243 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6244 | if (code_sec != NULL) |
6245 | { | |
6246 | asection *sec, *likely = NULL; | |
ee1e4ede | 6247 | |
aef36ac1 | 6248 | if (in_code_sec) |
4b85d634 | 6249 | { |
aef36ac1 AM |
6250 | sec = *code_sec; |
6251 | if (sec->vma <= val | |
6252 | && val < sec->vma + sec->size) | |
6253 | likely = sec; | |
6254 | else | |
6255 | val = -1; | |
6256 | } | |
6257 | else | |
6258 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6259 | if (sec->vma <= val | |
6260 | && (sec->flags & SEC_LOAD) != 0 | |
6261 | && (sec->flags & SEC_ALLOC) != 0) | |
6262 | likely = sec; | |
6263 | if (likely != NULL) | |
6264 | { | |
6265 | *code_sec = likely; | |
6266 | if (code_off != NULL) | |
6267 | *code_off = val - likely->vma; | |
4b85d634 AM |
6268 | } |
6269 | } | |
aef36ac1 | 6270 | return val; |
4b85d634 AM |
6271 | } |
6272 | ||
0c8d6e5c | 6273 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6274 | |
729eabd5 | 6275 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6276 | if (relocs == NULL) |
6277 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6278 | /* PR 17512: file: df8e1fd6. */ |
6279 | if (relocs == NULL) | |
6280 | return (bfd_vma) -1; | |
645ea6a9 | 6281 | |
8387904d | 6282 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6283 | lo = relocs; |
8387904d | 6284 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6285 | val = (bfd_vma) -1; |
8387904d AM |
6286 | while (lo < hi) |
6287 | { | |
6288 | look = lo + (hi - lo) / 2; | |
6289 | if (look->r_offset < offset) | |
6290 | lo = look + 1; | |
6291 | else if (look->r_offset > offset) | |
6292 | hi = look; | |
6293 | else | |
6294 | { | |
0ffa91dd NC |
6295 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6296 | ||
8387904d AM |
6297 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6298 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6299 | { | |
6300 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6301 | asection *sec = NULL; |
8387904d | 6302 | |
b53dfeb2 AM |
6303 | if (symndx >= symtab_hdr->sh_info |
6304 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6305 | { |
6306 | struct elf_link_hash_entry **sym_hashes; | |
6307 | struct elf_link_hash_entry *rh; | |
6308 | ||
6309 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6310 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6311 | if (rh != NULL) |
6312 | { | |
6313 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6314 | if (rh->root.type != bfd_link_hash_defined |
6315 | && rh->root.type != bfd_link_hash_defweak) | |
6316 | break; | |
6317 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6318 | { |
bb854a36 AM |
6319 | val = rh->root.u.def.value; |
6320 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6321 | } |
6322 | } | |
6323 | } | |
6324 | ||
6325 | if (sec == NULL) | |
6326 | { | |
6327 | Elf_Internal_Sym *sym; | |
6328 | ||
6329 | if (symndx < symtab_hdr->sh_info) | |
6330 | { | |
6331 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6332 | if (sym == NULL) | |
6333 | { | |
6334 | size_t symcnt = symtab_hdr->sh_info; | |
6335 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6336 | symcnt, 0, | |
6337 | NULL, NULL, NULL); | |
6338 | if (sym == NULL) | |
6339 | break; | |
6340 | symtab_hdr->contents = (bfd_byte *) sym; | |
6341 | } | |
6342 | sym += symndx; | |
128205bb AM |
6343 | } |
6344 | else | |
6345 | { | |
b53dfeb2 AM |
6346 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6347 | 1, symndx, | |
6348 | NULL, NULL, NULL); | |
128205bb AM |
6349 | if (sym == NULL) |
6350 | break; | |
128205bb | 6351 | } |
b53dfeb2 AM |
6352 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6353 | if (sec == NULL) | |
6354 | break; | |
6355 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6356 | val = sym->st_value; | |
8387904d | 6357 | } |
b53dfeb2 | 6358 | |
8387904d AM |
6359 | val += look->r_addend; |
6360 | if (code_off != NULL) | |
6361 | *code_off = val; | |
6362 | if (code_sec != NULL) | |
aef36ac1 AM |
6363 | { |
6364 | if (in_code_sec && *code_sec != sec) | |
6365 | return -1; | |
6366 | else | |
6367 | *code_sec = sec; | |
6368 | } | |
b53dfeb2 | 6369 | if (sec->output_section != NULL) |
8387904d | 6370 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6371 | } |
6372 | break; | |
6373 | } | |
6374 | } | |
645ea6a9 | 6375 | |
645ea6a9 | 6376 | return val; |
8387904d AM |
6377 | } |
6378 | ||
aef36ac1 AM |
6379 | /* If the ELF symbol SYM might be a function in SEC, return the |
6380 | function size and set *CODE_OFF to the function's entry point, | |
6381 | otherwise return zero. */ | |
9f296da3 | 6382 | |
aef36ac1 AM |
6383 | static bfd_size_type |
6384 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6385 | bfd_vma *code_off) | |
9f296da3 | 6386 | { |
aef36ac1 AM |
6387 | bfd_size_type size; |
6388 | ||
6389 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6390 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6391 | return 0; | |
6392 | ||
6393 | size = 0; | |
6394 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6395 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6396 | ||
6397 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6398 | { |
b07bca4e AM |
6399 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6400 | bfd_vma symval = sym->value; | |
6401 | ||
6402 | if (opd != NULL | |
6403 | && opd->adjust != NULL | |
6404 | && elf_section_data (sym->section)->relocs != NULL) | |
6405 | { | |
6406 | /* opd_entry_value will use cached relocs that have been | |
6407 | adjusted, but with raw symbols. That means both local | |
6408 | and global symbols need adjusting. */ | |
6409 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6410 | if (adjust == -1) | |
6411 | return 0; | |
6412 | symval += adjust; | |
6413 | } | |
6414 | ||
6415 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6416 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6417 | return 0; | |
6418 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6419 | symbol. This size has nothing to do with the code size of the | |
6420 | function, which is what we're supposed to return, but the | |
6421 | code size isn't available without looking up the dot-sym. | |
6422 | However, doing that would be a waste of time particularly | |
6423 | since elf_find_function will look at the dot-sym anyway. | |
6424 | Now, elf_find_function will keep the largest size of any | |
6425 | function sym found at the code address of interest, so return | |
6426 | 1 here to avoid it incorrectly caching a larger function size | |
6427 | for a small function. This does mean we return the wrong | |
6428 | size for a new-ABI function of size 24, but all that does is | |
6429 | disable caching for such functions. */ | |
6430 | if (size == 24) | |
6431 | size = 1; | |
9f296da3 | 6432 | } |
aef36ac1 AM |
6433 | else |
6434 | { | |
6435 | if (sym->section != sec) | |
6436 | return 0; | |
6437 | *code_off = sym->value; | |
6438 | } | |
6439 | if (size == 0) | |
6440 | size = 1; | |
6441 | return size; | |
9f296da3 AM |
6442 | } |
6443 | ||
f378ab09 AM |
6444 | /* Return true if symbol is a strong function defined in an ELFv2 |
6445 | object with st_other localentry bits of zero, ie. its local entry | |
6446 | point coincides with its global entry point. */ | |
6447 | ||
6448 | static bfd_boolean | |
6449 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
6450 | { | |
6451 | return (h != NULL | |
6452 | && h->type == STT_FUNC | |
6453 | && h->root.type == bfd_link_hash_defined | |
6454 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 6455 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
6456 | && is_ppc64_elf (h->root.u.def.section->owner) |
6457 | && abiversion (h->root.u.def.section->owner) >= 2); | |
6458 | } | |
6459 | ||
854b41e7 AM |
6460 | /* Return true if symbol is defined in a regular object file. */ |
6461 | ||
6462 | static bfd_boolean | |
6463 | is_static_defined (struct elf_link_hash_entry *h) | |
6464 | { | |
6465 | return ((h->root.type == bfd_link_hash_defined | |
6466 | || h->root.type == bfd_link_hash_defweak) | |
6467 | && h->root.u.def.section != NULL | |
6468 | && h->root.u.def.section->output_section != NULL); | |
6469 | } | |
6470 | ||
b31867b6 AM |
6471 | /* If FDH is a function descriptor symbol, return the associated code |
6472 | entry symbol if it is defined. Return NULL otherwise. */ | |
6473 | ||
6474 | static struct ppc_link_hash_entry * | |
6475 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6476 | { | |
6477 | if (fdh->is_func_descriptor) | |
6478 | { | |
6479 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6480 | if (fh->elf.root.type == bfd_link_hash_defined | |
6481 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6482 | return fh; | |
6483 | } | |
6484 | return NULL; | |
6485 | } | |
6486 | ||
6487 | /* If FH is a function code entry symbol, return the associated | |
6488 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6489 | ||
6490 | static struct ppc_link_hash_entry * | |
6491 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6492 | { | |
6493 | if (fh->oh != NULL | |
6494 | && fh->oh->is_func_descriptor) | |
6495 | { | |
6496 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6497 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6498 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6499 | return fdh; | |
6500 | } | |
6501 | return NULL; | |
6502 | } | |
6503 | ||
8c5b4e52 AM |
6504 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
6505 | ||
6506 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
6507 | ||
6508 | static bfd_boolean | |
6509 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
6510 | { | |
6511 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6512 | ||
6513 | if (htab != NULL && htab->need_func_desc_adj) | |
6514 | { | |
6515 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6516 | htab->need_func_desc_adj = 0; | |
6517 | } | |
6518 | return bfd_elf_gc_sections (abfd, info); | |
6519 | } | |
6520 | ||
74f0fb50 AM |
6521 | /* Mark all our entry sym sections, both opd and code section. */ |
6522 | ||
6523 | static void | |
6524 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6525 | { | |
6526 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6527 | struct bfd_sym_chain *sym; | |
6528 | ||
4dfe6ac6 NC |
6529 | if (htab == NULL) |
6530 | return; | |
6531 | ||
74f0fb50 AM |
6532 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6533 | { | |
b31867b6 | 6534 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6535 | asection *sec; |
6536 | ||
6537 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6538 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6539 | if (eh == NULL) |
6540 | continue; | |
6541 | if (eh->elf.root.type != bfd_link_hash_defined | |
6542 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6543 | continue; | |
6544 | ||
b31867b6 AM |
6545 | fh = defined_code_entry (eh); |
6546 | if (fh != NULL) | |
74f0fb50 | 6547 | { |
b31867b6 | 6548 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6549 | sec->flags |= SEC_KEEP; |
6550 | } | |
6551 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6552 | && opd_entry_value (eh->elf.root.u.def.section, | |
6553 | eh->elf.root.u.def.value, | |
aef36ac1 | 6554 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6555 | sec->flags |= SEC_KEEP; |
6556 | ||
6557 | sec = eh->elf.root.u.def.section; | |
6558 | sec->flags |= SEC_KEEP; | |
6559 | } | |
6560 | } | |
6561 | ||
64d03ab5 AM |
6562 | /* Mark sections containing dynamically referenced symbols. When |
6563 | building shared libraries, we must assume that any visible symbol is | |
6564 | referenced. */ | |
6565 | ||
6566 | static bfd_boolean | |
6567 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6568 | { | |
6569 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6570 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6571 | struct ppc_link_hash_entry *fdh; |
b407645f | 6572 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6573 | |
64d03ab5 | 6574 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6575 | fdh = defined_func_desc (eh); |
6576 | if (fdh != NULL) | |
6577 | eh = fdh; | |
64d03ab5 AM |
6578 | |
6579 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6580 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 6581 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 6582 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6583 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6584 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6585 | && (!bfd_link_executable (info) |
e278ae05 | 6586 | || info->gc_keep_exported |
b407645f AM |
6587 | || info->export_dynamic |
6588 | || (eh->elf.dynamic | |
6589 | && d != NULL | |
6590 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
e278ae05 | 6591 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
6592 | || !bfd_hide_sym_by_version (info->version_info, |
6593 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6594 | { |
6595 | asection *code_sec; | |
b31867b6 | 6596 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6597 | |
6598 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6599 | ||
6600 | /* Function descriptor syms cause the associated | |
6601 | function code sym section to be marked. */ | |
b31867b6 AM |
6602 | fh = defined_code_entry (eh); |
6603 | if (fh != NULL) | |
6604 | { | |
6605 | code_sec = fh->elf.root.u.def.section; | |
6606 | code_sec->flags |= SEC_KEEP; | |
6607 | } | |
64d03ab5 AM |
6608 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6609 | && opd_entry_value (eh->elf.root.u.def.section, | |
6610 | eh->elf.root.u.def.value, | |
aef36ac1 | 6611 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6612 | code_sec->flags |= SEC_KEEP; |
6613 | } | |
6614 | ||
6615 | return TRUE; | |
6616 | } | |
6617 | ||
5bd4f169 AM |
6618 | /* Return the section that should be marked against GC for a given |
6619 | relocation. */ | |
6620 | ||
6621 | static asection * | |
4ce794b7 | 6622 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6623 | struct bfd_link_info *info, |
4ce794b7 AM |
6624 | Elf_Internal_Rela *rel, |
6625 | struct elf_link_hash_entry *h, | |
6626 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6627 | { |
ccfa59ea AM |
6628 | asection *rsec; |
6629 | ||
ccfa59ea AM |
6630 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6631 | function sections, as all functions are referenced in .opd. */ | |
6632 | rsec = NULL; | |
6633 | if (get_opd_info (sec) != NULL) | |
6634 | return rsec; | |
1e2f5b6e | 6635 | |
5bd4f169 AM |
6636 | if (h != NULL) |
6637 | { | |
04c9666a | 6638 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6639 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6640 | |
4ce794b7 | 6641 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6642 | switch (r_type) |
5bd4f169 AM |
6643 | { |
6644 | case R_PPC64_GNU_VTINHERIT: | |
6645 | case R_PPC64_GNU_VTENTRY: | |
6646 | break; | |
6647 | ||
6648 | default: | |
6649 | switch (h->root.type) | |
6650 | { | |
6651 | case bfd_link_hash_defined: | |
6652 | case bfd_link_hash_defweak: | |
ccfa59ea | 6653 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6654 | fdh = defined_func_desc (eh); |
6655 | if (fdh != NULL) | |
8c5b4e52 AM |
6656 | { |
6657 | /* -mcall-aixdesc code references the dot-symbol on | |
6658 | a call reloc. Mark the function descriptor too | |
6659 | against garbage collection. */ | |
6660 | fdh->elf.mark = 1; | |
60d67dc8 AM |
6661 | if (fdh->elf.is_weakalias) |
6662 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
6663 | eh = fdh; |
6664 | } | |
1e2f5b6e AM |
6665 | |
6666 | /* Function descriptor syms cause the associated | |
6667 | function code sym section to be marked. */ | |
b31867b6 AM |
6668 | fh = defined_code_entry (eh); |
6669 | if (fh != NULL) | |
ccfa59ea AM |
6670 | { |
6671 | /* They also mark their opd section. */ | |
74f0fb50 | 6672 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6673 | |
b31867b6 | 6674 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6675 | } |
8387904d AM |
6676 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6677 | && opd_entry_value (eh->elf.root.u.def.section, | |
6678 | eh->elf.root.u.def.value, | |
aef36ac1 | 6679 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6680 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6681 | else |
1e2f5b6e AM |
6682 | rsec = h->root.u.def.section; |
6683 | break; | |
5bd4f169 AM |
6684 | |
6685 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6686 | rsec = h->root.u.c.p->section; |
6687 | break; | |
5bd4f169 AM |
6688 | |
6689 | default: | |
fb34365b | 6690 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6691 | } |
6692 | } | |
6693 | } | |
6694 | else | |
6695 | { | |
74f0fb50 | 6696 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6697 | |
6698 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6699 | opd = get_opd_info (rsec); |
6700 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6701 | { |
74f0fb50 | 6702 | rsec->gc_mark = 1; |
ccfa59ea | 6703 | |
51aecdc5 | 6704 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6705 | } |
5bd4f169 AM |
6706 | } |
6707 | ||
1e2f5b6e | 6708 | return rsec; |
5bd4f169 AM |
6709 | } |
6710 | ||
deb0e272 AM |
6711 | /* The maximum size of .sfpr. */ |
6712 | #define SFPR_MAX (218*4) | |
6713 | ||
6714 | struct sfpr_def_parms | |
6715 | { | |
699733f6 AM |
6716 | const char name[12]; |
6717 | unsigned char lo, hi; | |
deb0e272 AM |
6718 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6719 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6720 | }; | |
6721 | ||
a4b6fadd AM |
6722 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6723 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6724 | instead. */ | |
deb0e272 | 6725 | |
4dfe6ac6 | 6726 | static bfd_boolean |
a4b6fadd AM |
6727 | sfpr_define (struct bfd_link_info *info, |
6728 | const struct sfpr_def_parms *parm, | |
6729 | asection *stub_sec) | |
deb0e272 AM |
6730 | { |
6731 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6732 | unsigned int i; | |
6733 | size_t len = strlen (parm->name); | |
6734 | bfd_boolean writing = FALSE; | |
699733f6 | 6735 | char sym[16]; |
deb0e272 | 6736 | |
4dfe6ac6 NC |
6737 | if (htab == NULL) |
6738 | return FALSE; | |
6739 | ||
deb0e272 AM |
6740 | memcpy (sym, parm->name, len); |
6741 | sym[len + 2] = 0; | |
6742 | ||
6743 | for (i = parm->lo; i <= parm->hi; i++) | |
6744 | { | |
a4b6fadd | 6745 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6746 | |
6747 | sym[len + 0] = i / 10 + '0'; | |
6748 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6749 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6750 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6751 | if (stub_sec != NULL) |
deb0e272 | 6752 | { |
a4b6fadd AM |
6753 | if (h != NULL |
6754 | && h->elf.root.type == bfd_link_hash_defined | |
6755 | && h->elf.root.u.def.section == htab->sfpr) | |
6756 | { | |
6757 | struct elf_link_hash_entry *s; | |
6758 | char buf[32]; | |
6759 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6760 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6761 | if (s == NULL) | |
6762 | return FALSE; | |
6763 | if (s->root.type == bfd_link_hash_new | |
6764 | || (s->root.type = bfd_link_hash_defined | |
6765 | && s->root.u.def.section == stub_sec)) | |
6766 | { | |
6767 | s->root.type = bfd_link_hash_defined; | |
6768 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 6769 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
6770 | + h->elf.root.u.def.value); |
6771 | s->ref_regular = 1; | |
6772 | s->def_regular = 1; | |
6773 | s->ref_regular_nonweak = 1; | |
6774 | s->forced_local = 1; | |
6775 | s->non_elf = 0; | |
6776 | s->root.linker_def = 1; | |
6777 | } | |
6778 | } | |
6779 | continue; | |
6780 | } | |
6781 | if (h != NULL) | |
6782 | { | |
6783 | h->save_res = 1; | |
6784 | if (!h->elf.def_regular) | |
deb0e272 | 6785 | { |
a4b6fadd AM |
6786 | h->elf.root.type = bfd_link_hash_defined; |
6787 | h->elf.root.u.def.section = htab->sfpr; | |
6788 | h->elf.root.u.def.value = htab->sfpr->size; | |
6789 | h->elf.type = STT_FUNC; | |
6790 | h->elf.def_regular = 1; | |
b32547cd | 6791 | h->elf.non_elf = 0; |
a4b6fadd AM |
6792 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6793 | writing = TRUE; | |
deb0e272 | 6794 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6795 | { |
6796 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6797 | if (htab->sfpr->contents == NULL) | |
6798 | return FALSE; | |
6799 | } | |
deb0e272 AM |
6800 | } |
6801 | } | |
6802 | if (writing) | |
6803 | { | |
6804 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6805 | if (i != parm->hi) | |
6806 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6807 | else | |
6808 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6809 | htab->sfpr->size = p - htab->sfpr->contents; | |
6810 | } | |
6811 | } | |
6812 | ||
6813 | return TRUE; | |
6814 | } | |
6815 | ||
6816 | static bfd_byte * | |
6817 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6818 | { | |
6819 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6820 | return p + 4; | |
6821 | } | |
6822 | ||
6823 | static bfd_byte * | |
6824 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6825 | { | |
6826 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6827 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6828 | p = p + 4; |
6829 | bfd_put_32 (abfd, BLR, p); | |
6830 | return p + 4; | |
6831 | } | |
6832 | ||
6833 | static bfd_byte * | |
6834 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6835 | { | |
6836 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6837 | return p + 4; | |
6838 | } | |
6839 | ||
6840 | static bfd_byte * | |
6841 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6842 | { | |
a078d95a | 6843 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6844 | p = p + 4; |
6845 | p = restgpr0 (abfd, p, r); | |
6846 | bfd_put_32 (abfd, MTLR_R0, p); | |
6847 | p = p + 4; | |
6848 | if (r == 29) | |
6849 | { | |
6850 | p = restgpr0 (abfd, p, 30); | |
6851 | p = restgpr0 (abfd, p, 31); | |
6852 | } | |
6853 | bfd_put_32 (abfd, BLR, p); | |
6854 | return p + 4; | |
6855 | } | |
6856 | ||
6857 | static bfd_byte * | |
6858 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6859 | { | |
6860 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6861 | return p + 4; | |
6862 | } | |
6863 | ||
6864 | static bfd_byte * | |
6865 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6866 | { | |
6867 | p = savegpr1 (abfd, p, r); | |
6868 | bfd_put_32 (abfd, BLR, p); | |
6869 | return p + 4; | |
6870 | } | |
6871 | ||
6872 | static bfd_byte * | |
6873 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6874 | { | |
6875 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6876 | return p + 4; | |
6877 | } | |
6878 | ||
6879 | static bfd_byte * | |
6880 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6881 | { | |
6882 | p = restgpr1 (abfd, p, r); | |
6883 | bfd_put_32 (abfd, BLR, p); | |
6884 | return p + 4; | |
6885 | } | |
6886 | ||
6887 | static bfd_byte * | |
6888 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6889 | { | |
6890 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6891 | return p + 4; | |
6892 | } | |
6893 | ||
6894 | static bfd_byte * | |
6895 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6896 | { | |
6897 | p = savefpr (abfd, p, r); | |
a078d95a | 6898 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6899 | p = p + 4; |
6900 | bfd_put_32 (abfd, BLR, p); | |
6901 | return p + 4; | |
6902 | } | |
6903 | ||
6904 | static bfd_byte * | |
6905 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6906 | { | |
6907 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6908 | return p + 4; | |
6909 | } | |
6910 | ||
6911 | static bfd_byte * | |
6912 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6913 | { | |
a078d95a | 6914 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6915 | p = p + 4; |
6916 | p = restfpr (abfd, p, r); | |
6917 | bfd_put_32 (abfd, MTLR_R0, p); | |
6918 | p = p + 4; | |
6919 | if (r == 29) | |
6920 | { | |
6921 | p = restfpr (abfd, p, 30); | |
6922 | p = restfpr (abfd, p, 31); | |
6923 | } | |
6924 | bfd_put_32 (abfd, BLR, p); | |
6925 | return p + 4; | |
6926 | } | |
6927 | ||
6928 | static bfd_byte * | |
6929 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6930 | { | |
6931 | p = savefpr (abfd, p, r); | |
6932 | bfd_put_32 (abfd, BLR, p); | |
6933 | return p + 4; | |
6934 | } | |
6935 | ||
6936 | static bfd_byte * | |
6937 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6938 | { | |
6939 | p = restfpr (abfd, p, r); | |
6940 | bfd_put_32 (abfd, BLR, p); | |
6941 | return p + 4; | |
6942 | } | |
6943 | ||
6944 | static bfd_byte * | |
6945 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6946 | { | |
6947 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6948 | p = p + 4; | |
6949 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6950 | return p + 4; | |
6951 | } | |
6952 | ||
6953 | static bfd_byte * | |
6954 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6955 | { | |
6956 | p = savevr (abfd, p, r); | |
6957 | bfd_put_32 (abfd, BLR, p); | |
6958 | return p + 4; | |
6959 | } | |
6960 | ||
6961 | static bfd_byte * | |
6962 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6963 | { | |
6964 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6965 | p = p + 4; | |
6966 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6967 | return p + 4; | |
6968 | } | |
6969 | ||
6970 | static bfd_byte * | |
6971 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6972 | { | |
6973 | p = restvr (abfd, p, r); | |
6974 | bfd_put_32 (abfd, BLR, p); | |
6975 | return p + 4; | |
6976 | } | |
6977 | ||
e86ce104 AM |
6978 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6979 | information on function code symbol entries to their corresponding | |
6980 | function descriptor symbol entries. */ | |
deb0e272 | 6981 | |
b34976b6 | 6982 | static bfd_boolean |
4ce794b7 | 6983 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6984 | { |
e86ce104 | 6985 | struct bfd_link_info *info; |
65f38f15 | 6986 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6987 | struct ppc_link_hash_entry *fh; |
6988 | struct ppc_link_hash_entry *fdh; | |
6989 | bfd_boolean force_local; | |
5bd4f169 | 6990 | |
50bc7936 AM |
6991 | fh = (struct ppc_link_hash_entry *) h; |
6992 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6993 | return TRUE; |
e86ce104 | 6994 | |
8c5b4e52 AM |
6995 | if (!fh->is_func) |
6996 | return TRUE; | |
6997 | ||
6998 | if (fh->elf.root.root.string[0] != '.' | |
6999 | || fh->elf.root.root.string[1] == '\0') | |
7000 | return TRUE; | |
7001 | ||
4ce794b7 | 7002 | info = inf; |
65f38f15 | 7003 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7004 | if (htab == NULL) |
7005 | return FALSE; | |
5bd4f169 | 7006 | |
8c5b4e52 AM |
7007 | /* Find the corresponding function descriptor symbol. */ |
7008 | fdh = lookup_fdh (fh, htab); | |
7009 | ||
c09bdfe5 AM |
7010 | /* Resolve undefined references to dot-symbols as the value |
7011 | in the function descriptor, if we have one in a regular object. | |
7012 | This is to satisfy cases like ".quad .foo". Calls to functions | |
7013 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
7014 | if ((fh->elf.root.type == bfd_link_hash_undefined |
7015 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
7016 | && (fdh->elf.root.type == bfd_link_hash_defined | |
7017 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
7018 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
7019 | && opd_entry_value (fdh->elf.root.u.def.section, | |
7020 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 7021 | &fh->elf.root.u.def.section, |
aef36ac1 | 7022 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 7023 | { |
b31867b6 | 7024 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 7025 | fh->elf.forced_local = 1; |
b31867b6 AM |
7026 | fh->elf.def_regular = fdh->elf.def_regular; |
7027 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
7028 | } |
7029 | ||
8c5b4e52 AM |
7030 | if (!fh->elf.dynamic) |
7031 | { | |
7032 | struct plt_entry *ent; | |
5bd4f169 | 7033 | |
8c5b4e52 AM |
7034 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
7035 | if (ent->plt.refcount > 0) | |
7036 | break; | |
7037 | if (ent == NULL) | |
7038 | return TRUE; | |
7039 | } | |
5bd4f169 | 7040 | |
8c5b4e52 | 7041 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 7042 | if (fdh == NULL |
0e1862bb | 7043 | && !bfd_link_executable (info) |
50bc7936 AM |
7044 | && (fh->elf.root.type == bfd_link_hash_undefined |
7045 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
7046 | { | |
908b32fc | 7047 | fdh = make_fdh (info, fh); |
bb700d78 AM |
7048 | if (fdh == NULL) |
7049 | return FALSE; | |
50bc7936 | 7050 | } |
648cca2c | 7051 | |
8c5b4e52 | 7052 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
7053 | if (fdh != NULL |
7054 | && fdh->fake | |
8c5b4e52 AM |
7055 | && (fh->elf.root.type == bfd_link_hash_defined |
7056 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
7057 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 7058 | |
8c5b4e52 AM |
7059 | /* Transfer dynamic linking information to the function descriptor. */ |
7060 | if (fdh != NULL) | |
7061 | { | |
f5385ebf AM |
7062 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
7063 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
7064 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
7065 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
7066 | fdh->elf.dynamic |= fh->elf.dynamic; |
7067 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
7068 | || fh->elf.type == STT_FUNC | |
7069 | || fh->elf.type == STT_GNU_IFUNC); | |
7070 | move_plt_plist (fh, fdh); | |
7071 | ||
7072 | if (!fdh->elf.forced_local | |
7073 | && fh->elf.dynindx != -1) | |
7074 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
7075 | return FALSE; | |
e86ce104 AM |
7076 | } |
7077 | ||
50bc7936 AM |
7078 | /* Now that the info is on the function descriptor, clear the |
7079 | function code sym info. Any function code syms for which we | |
7080 | don't have a definition in a regular file, we force local. | |
7081 | This prevents a shared library from exporting syms that have | |
7082 | been imported from another library. Function code syms that | |
7083 | are really in the library we must leave global to prevent the | |
7084 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
7085 | force_local = (!fh->elf.def_regular |
7086 | || fdh == NULL | |
7087 | || !fdh->elf.def_regular | |
7088 | || fdh->elf.forced_local); | |
50bc7936 AM |
7089 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
7090 | ||
b34976b6 | 7091 | return TRUE; |
e86ce104 | 7092 | } |
40b8271b | 7093 | |
a4b6fadd AM |
7094 | static const struct sfpr_def_parms save_res_funcs[] = |
7095 | { | |
7096 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
7097 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
7098 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
7099 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7100 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7101 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7102 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7103 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7104 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7105 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7106 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7107 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7108 | }; | |
7109 | ||
e86ce104 | 7110 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7111 | this hook to a) provide some gcc support functions, and b) transfer |
7112 | dynamic linking information gathered so far on function code symbol | |
7113 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7114 | |
b34976b6 | 7115 | static bfd_boolean |
4ce794b7 AM |
7116 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7117 | struct bfd_link_info *info) | |
e86ce104 AM |
7118 | { |
7119 | struct ppc_link_hash_table *htab; | |
7120 | ||
7121 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7122 | if (htab == NULL) |
7123 | return FALSE; | |
7124 | ||
b32547cd AM |
7125 | /* Provide any missing _save* and _rest* functions. */ |
7126 | if (htab->sfpr != NULL) | |
7127 | { | |
7128 | unsigned int i; | |
7129 | ||
7130 | htab->sfpr->size = 0; | |
7131 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7132 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7133 | return FALSE; | |
7134 | if (htab->sfpr->size == 0) | |
7135 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7136 | } | |
7137 | ||
7138 | if (bfd_link_relocatable (info)) | |
7139 | return TRUE; | |
7140 | ||
7141 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7142 | { |
7143 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7144 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7145 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7146 | if (!htab->elf.hgot->def_regular |
7147 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7148 | { | |
7149 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7150 | htab->elf.hgot->root.u.def.value = 0; | |
7151 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7152 | htab->elf.hgot->def_regular = 1; | |
7153 | htab->elf.hgot->root.linker_def = 1; | |
7154 | } | |
dba6fa9b | 7155 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7156 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7157 | | STV_HIDDEN); | |
7158 | } | |
c66bb0ee | 7159 | |
8c5b4e52 AM |
7160 | if (htab->need_func_desc_adj) |
7161 | { | |
7162 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
7163 | htab->need_func_desc_adj = 0; | |
7164 | } | |
805fc799 | 7165 | |
b34976b6 | 7166 | return TRUE; |
e86ce104 AM |
7167 | } |
7168 | ||
98bbb1b8 | 7169 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 7170 | |
98bbb1b8 | 7171 | static asection * |
a345bc8d AM |
7172 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
7173 | { | |
7174 | struct ppc_link_hash_entry *eh; | |
7175 | struct elf_dyn_relocs *p; | |
7176 | ||
7177 | eh = (struct ppc_link_hash_entry *) h; | |
7178 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7179 | { | |
7180 | asection *s = p->sec->output_section; | |
7181 | ||
7182 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 7183 | return p->sec; |
a345bc8d | 7184 | } |
98bbb1b8 | 7185 | return NULL; |
a345bc8d AM |
7186 | } |
7187 | ||
d311bc8b | 7188 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
7189 | aliases, that apply to read-only sections. Cannot be used after |
7190 | size_dynamic_sections. */ | |
d311bc8b AM |
7191 | |
7192 | static bfd_boolean | |
7193 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7194 | { | |
7195 | struct ppc_link_hash_entry *eh; | |
7196 | ||
7197 | eh = (struct ppc_link_hash_entry *) h; | |
7198 | do | |
7199 | { | |
7200 | if (readonly_dynrelocs (&eh->elf)) | |
7201 | return TRUE; | |
ab2477e1 | 7202 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
d311bc8b AM |
7203 | } while (eh != NULL && &eh->elf != h); |
7204 | ||
7205 | return FALSE; | |
7206 | } | |
8a2058b5 | 7207 | |
8a9e8e72 AM |
7208 | /* Return whether EH has pc-relative dynamic relocs. */ |
7209 | ||
7210 | static bfd_boolean | |
7211 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
7212 | { | |
7213 | struct elf_dyn_relocs *p; | |
7214 | ||
7215 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7216 | if (p->pc_count != 0) | |
7217 | return TRUE; | |
7218 | return FALSE; | |
7219 | } | |
7220 | ||
8a2058b5 AM |
7221 | /* Return true if a global entry stub will be created for H. Valid |
7222 | for ELFv2 before plt entries have been allocated. */ | |
7223 | ||
7224 | static bfd_boolean | |
7225 | global_entry_stub (struct elf_link_hash_entry *h) | |
7226 | { | |
7227 | struct plt_entry *pent; | |
7228 | ||
7229 | if (!h->pointer_equality_needed | |
7230 | || h->def_regular) | |
7231 | return FALSE; | |
7232 | ||
7233 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7234 | if (pent->plt.refcount > 0 | |
7235 | && pent->addend == 0) | |
7236 | return TRUE; | |
7237 | ||
7238 | return FALSE; | |
7239 | } | |
7240 | ||
e86ce104 AM |
7241 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7242 | regular object. The current definition is in some section of the | |
7243 | dynamic object, but we're not including those sections. We have to | |
7244 | change the definition to something the rest of the link can | |
7245 | understand. */ | |
7246 | ||
b34976b6 | 7247 | static bfd_boolean |
4ce794b7 AM |
7248 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7249 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7250 | { |
7251 | struct ppc_link_hash_table *htab; | |
5474d94f | 7252 | asection *s, *srel; |
e86ce104 AM |
7253 | |
7254 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7255 | if (htab == NULL) |
7256 | return FALSE; | |
e86ce104 AM |
7257 | |
7258 | /* Deal with function syms. */ | |
7259 | if (h->type == STT_FUNC | |
e054468f | 7260 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7261 | || h->needs_plt) |
e86ce104 | 7262 | { |
529fe20e AM |
7263 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
7264 | || SYMBOL_CALLS_LOCAL (info, h) | |
7265 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
7266 | /* Discard dyn_relocs when non-pic if we've decided that a | |
7267 | function symbol is local and not an ifunc. We keep dynamic | |
7268 | relocs for ifuncs when local rather than always emitting a | |
7269 | plt call stub for them and defining the symbol on the call | |
7270 | stub. We can't do that for ELFv1 anyway (a function symbol | |
7271 | is defined on a descriptor, not code) and it can be faster at | |
7272 | run-time due to not needing to bounce through a stub. The | |
7273 | dyn_relocs for ifuncs will be applied even in a static | |
7274 | executable. */ | |
7275 | if (!bfd_link_pic (info) | |
7276 | && h->type != STT_GNU_IFUNC | |
7277 | && local) | |
7278 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
7279 | ||
e86ce104 AM |
7280 | /* Clear procedure linkage table information for any symbol that |
7281 | won't need a .plt entry. */ | |
411e1bfb AM |
7282 | struct plt_entry *ent; |
7283 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7284 | if (ent->plt.refcount > 0) | |
7285 | break; | |
8387904d | 7286 | if (ent == NULL |
2d7ad24e AM |
7287 | || (h->type != STT_GNU_IFUNC |
7288 | && local | |
3e04d765 AM |
7289 | && (htab->can_convert_all_inline_plt |
7290 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
7291 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 7292 | { |
411e1bfb | 7293 | h->plt.plist = NULL; |
f5385ebf | 7294 | h->needs_plt = 0; |
d1eca1e4 | 7295 | h->pointer_equality_needed = 0; |
40b8271b | 7296 | } |
8a2058b5 | 7297 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 7298 | { |
d1eca1e4 AM |
7299 | /* Taking a function's address in a read/write section |
7300 | doesn't require us to define the function symbol in the | |
7301 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
7302 | be used instead. The reason we prefer a few more dynamic |
7303 | relocs is that calling via a global entry stub costs a | |
7304 | few more instructions, and pointer_equality_needed causes | |
7305 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 7306 | if (global_entry_stub (h)) |
d1eca1e4 | 7307 | { |
ab2477e1 | 7308 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
7309 | { |
7310 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
7311 | /* If we haven't seen a branch reloc and the symbol |
7312 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
7313 | if (!h->needs_plt) |
7314 | h->plt.plist = NULL; | |
7315 | } | |
7316 | else if (!bfd_link_pic (info)) | |
7317 | /* We are going to be defining the function symbol on the | |
7318 | plt stub, so no dyn_relocs needed when non-pic. */ | |
7319 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
7320 | } |
7321 | ||
3988aed5 AM |
7322 | /* ELFv2 function symbols can't have copy relocs. */ |
7323 | return TRUE; | |
7324 | } | |
7325 | else if (!h->needs_plt | |
ab2477e1 | 7326 | && !readonly_dynrelocs (h)) |
3988aed5 | 7327 | { |
04383fd1 AM |
7328 | /* If we haven't seen a branch reloc and the symbol isn't an |
7329 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
7330 | h->plt.plist = NULL; |
7331 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
7332 | return TRUE; |
7333 | } | |
5bd4f169 | 7334 | } |
bbd7ec4a | 7335 | else |
411e1bfb | 7336 | h->plt.plist = NULL; |
5bd4f169 AM |
7337 | |
7338 | /* If this is a weak symbol, and there is a real definition, the | |
7339 | processor independent code will have arranged for us to see the | |
7340 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7341 | if (h->is_weakalias) |
5bd4f169 | 7342 | { |
60d67dc8 AM |
7343 | struct elf_link_hash_entry *def = weakdef (h); |
7344 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7345 | h->root.u.def.section = def->root.u.def.section; | |
7346 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
7347 | if (def->root.u.def.section == htab->elf.sdynbss |
7348 | || def->root.u.def.section == htab->elf.sdynrelro) | |
7349 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 7350 | return TRUE; |
5bd4f169 AM |
7351 | } |
7352 | ||
5bd4f169 AM |
7353 | /* If we are creating a shared library, we must presume that the |
7354 | only references to the symbol are via the global offset table. | |
7355 | For such cases we need not do anything here; the relocations will | |
7356 | be handled correctly by relocate_section. */ | |
0e1862bb | 7357 | if (bfd_link_pic (info)) |
b34976b6 | 7358 | return TRUE; |
5bd4f169 | 7359 | |
65f38f15 AM |
7360 | /* If there are no references to this symbol that do not use the |
7361 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7362 | if (!h->non_got_ref) |
b34976b6 | 7363 | return TRUE; |
65f38f15 | 7364 | |
b186458a | 7365 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 7366 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 7367 | |
d93d1c80 AM |
7368 | /* If -z nocopyreloc was given, don't generate them either. */ |
7369 | || info->nocopyreloc | |
a127494f | 7370 | |
dce2246a | 7371 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 7372 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 7373 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 7374 | |
d93d1c80 AM |
7375 | /* Protected variables do not work with .dynbss. The copy in |
7376 | .dynbss won't be used by the shared library with the protected | |
7377 | definition for the variable. Text relocations are preferable | |
7378 | to an incorrect program. */ | |
7379 | || h->protected_def) | |
529fe20e | 7380 | return TRUE; |
a127494f | 7381 | |
5d35169e | 7382 | if (h->plt.plist != NULL) |
97b639ba AM |
7383 | { |
7384 | /* We should never get here, but unfortunately there are versions | |
7385 | of gcc out there that improperly (for this ABI) put initialized | |
7386 | function pointers, vtable refs and suchlike in read-only | |
7387 | sections. Allow them to proceed, but warn that this might | |
7388 | break at runtime. */ | |
25f53a85 | 7389 | info->callbacks->einfo |
c1c8c1ef | 7390 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 7391 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7392 | h->root.root.string); |
7393 | } | |
5d35169e AM |
7394 | |
7395 | /* This is a reference to a symbol defined by a dynamic object which | |
7396 | is not a function. */ | |
7397 | ||
5bd4f169 AM |
7398 | /* We must allocate the symbol in our .dynbss section, which will |
7399 | become part of the .bss section of the executable. There will be | |
7400 | an entry for this symbol in the .dynsym section. The dynamic | |
7401 | object will contain position independent code, so all references | |
7402 | from the dynamic object to this symbol will go through the global | |
7403 | offset table. The dynamic linker will use the .dynsym entry to | |
7404 | determine the address it must put in the global offset table, so | |
7405 | both the dynamic object and the regular object will refer to the | |
7406 | same memory location for the variable. */ | |
5474d94f AM |
7407 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7408 | { | |
7409 | s = htab->elf.sdynrelro; | |
7410 | srel = htab->elf.sreldynrelro; | |
7411 | } | |
7412 | else | |
7413 | { | |
7414 | s = htab->elf.sdynbss; | |
7415 | srel = htab->elf.srelbss; | |
7416 | } | |
1d7e9d18 | 7417 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7418 | { |
4a7e5234 AM |
7419 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
7420 | linker to copy the initial value out of the dynamic object | |
7421 | and into the runtime process image. */ | |
5474d94f | 7422 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7423 | h->needs_copy = 1; |
5bd4f169 AM |
7424 | } |
7425 | ||
529fe20e AM |
7426 | /* We no longer want dyn_relocs. */ |
7427 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 7428 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7429 | } |
7430 | ||
e86ce104 AM |
7431 | /* If given a function descriptor symbol, hide both the function code |
7432 | sym and the descriptor. */ | |
7433 | static void | |
4ce794b7 AM |
7434 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7435 | struct elf_link_hash_entry *h, | |
7436 | bfd_boolean force_local) | |
e86ce104 | 7437 | { |
34814b9f | 7438 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7439 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7440 | ||
34814b9f AM |
7441 | eh = (struct ppc_link_hash_entry *) h; |
7442 | if (eh->is_func_descriptor) | |
e86ce104 | 7443 | { |
34814b9f | 7444 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7445 | |
721956f4 | 7446 | if (fh == NULL) |
d1329ca3 AM |
7447 | { |
7448 | const char *p, *q; | |
b8ac2841 | 7449 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
7450 | char save; |
7451 | ||
7452 | /* We aren't supposed to use alloca in BFD because on | |
7453 | systems which do not have alloca the version in libiberty | |
7454 | calls xmalloc, which might cause the program to crash | |
7455 | when it runs out of memory. This function doesn't have a | |
7456 | return status, so there's no way to gracefully return an | |
7457 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7458 | accessed; It's either a string in an ELF string table, |
7459 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7460 | |
34814b9f | 7461 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7462 | save = *p; |
7463 | *(char *) p = '.'; | |
34814b9f | 7464 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 7465 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7466 | *(char *) p = save; |
7467 | ||
7468 | /* Unfortunately, if it so happens that the string we were | |
7469 | looking for was allocated immediately before this string, | |
7470 | then we overwrote the string terminator. That's the only | |
7471 | reason the lookup should fail. */ | |
7472 | if (fh == NULL) | |
7473 | { | |
34814b9f AM |
7474 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7475 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7476 | --q, --p; |
34814b9f AM |
7477 | if (q < eh->elf.root.root.string && *p == '.') |
7478 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 7479 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7480 | } |
7481 | if (fh != NULL) | |
7482 | { | |
34814b9f AM |
7483 | eh->oh = fh; |
7484 | fh->oh = eh; | |
d1329ca3 AM |
7485 | } |
7486 | } | |
e86ce104 | 7487 | if (fh != NULL) |
34814b9f | 7488 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7489 | } |
7490 | } | |
7491 | ||
411e1bfb | 7492 | static bfd_boolean |
8843416a AM |
7493 | get_sym_h (struct elf_link_hash_entry **hp, |
7494 | Elf_Internal_Sym **symp, | |
7495 | asection **symsecp, | |
f961d9dd | 7496 | unsigned char **tls_maskp, |
8843416a AM |
7497 | Elf_Internal_Sym **locsymsp, |
7498 | unsigned long r_symndx, | |
7499 | bfd *ibfd) | |
411e1bfb | 7500 | { |
0ffa91dd | 7501 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7502 | |
7503 | if (r_symndx >= symtab_hdr->sh_info) | |
7504 | { | |
7505 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7506 | struct elf_link_hash_entry *h; | |
7507 | ||
7508 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7509 | h = elf_follow_link (h); |
411e1bfb AM |
7510 | |
7511 | if (hp != NULL) | |
7512 | *hp = h; | |
7513 | ||
7514 | if (symp != NULL) | |
7515 | *symp = NULL; | |
7516 | ||
7517 | if (symsecp != NULL) | |
7518 | { | |
7519 | asection *symsec = NULL; | |
7520 | if (h->root.type == bfd_link_hash_defined | |
7521 | || h->root.type == bfd_link_hash_defweak) | |
7522 | symsec = h->root.u.def.section; | |
7523 | *symsecp = symsec; | |
7524 | } | |
7525 | ||
e7b938ca | 7526 | if (tls_maskp != NULL) |
411e1bfb AM |
7527 | { |
7528 | struct ppc_link_hash_entry *eh; | |
7529 | ||
7530 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7531 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7532 | } |
7533 | } | |
7534 | else | |
7535 | { | |
7536 | Elf_Internal_Sym *sym; | |
7537 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7538 | ||
7539 | if (locsyms == NULL) | |
7540 | { | |
7541 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7542 | if (locsyms == NULL) | |
7543 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7544 | symtab_hdr->sh_info, | |
7545 | 0, NULL, NULL, NULL); | |
7546 | if (locsyms == NULL) | |
7547 | return FALSE; | |
7548 | *locsymsp = locsyms; | |
7549 | } | |
7550 | sym = locsyms + r_symndx; | |
7551 | ||
7552 | if (hp != NULL) | |
7553 | *hp = NULL; | |
7554 | ||
7555 | if (symp != NULL) | |
7556 | *symp = sym; | |
7557 | ||
7558 | if (symsecp != NULL) | |
cb33740c | 7559 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7560 | |
e7b938ca | 7561 | if (tls_maskp != NULL) |
411e1bfb AM |
7562 | { |
7563 | struct got_entry **lgot_ents; | |
f961d9dd | 7564 | unsigned char *tls_mask; |
411e1bfb | 7565 | |
e7b938ca | 7566 | tls_mask = NULL; |
411e1bfb AM |
7567 | lgot_ents = elf_local_got_ents (ibfd); |
7568 | if (lgot_ents != NULL) | |
7569 | { | |
e054468f AM |
7570 | struct plt_entry **local_plt = (struct plt_entry **) |
7571 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7572 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7573 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7574 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7575 | } |
e7b938ca | 7576 | *tls_maskp = tls_mask; |
411e1bfb AM |
7577 | } |
7578 | } | |
7579 | return TRUE; | |
7580 | } | |
7581 | ||
e7b938ca | 7582 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7583 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7584 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7585 | |
7586 | static int | |
f961d9dd | 7587 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7588 | unsigned long *toc_symndx, |
7589 | bfd_vma *toc_addend, | |
0d4792f7 | 7590 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7591 | const Elf_Internal_Rela *rel, |
7592 | bfd *ibfd) | |
411e1bfb AM |
7593 | { |
7594 | unsigned long r_symndx; | |
0d4792f7 | 7595 | int next_r; |
411e1bfb AM |
7596 | struct elf_link_hash_entry *h; |
7597 | Elf_Internal_Sym *sym; | |
7598 | asection *sec; | |
7599 | bfd_vma off; | |
7600 | ||
7601 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7602 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7603 | return 0; |
411e1bfb | 7604 | |
37da22e5 AM |
7605 | if ((*tls_maskp != NULL |
7606 | && (**tls_maskp & TLS_TLS) != 0 | |
7607 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 7608 | || sec == NULL |
6bee8834 | 7609 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7610 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7611 | return 1; |
411e1bfb AM |
7612 | |
7613 | /* Look inside a TOC section too. */ | |
7614 | if (h != NULL) | |
7615 | { | |
7616 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7617 | off = h->root.u.def.value; | |
7618 | } | |
7619 | else | |
7620 | off = sym->st_value; | |
7621 | off += rel->r_addend; | |
7622 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7623 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7624 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7625 | if (toc_symndx != NULL) |
7626 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7627 | if (toc_addend != NULL) |
7628 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7629 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7630 | return 0; | |
854b41e7 | 7631 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7632 | && (next_r == -1 || next_r == -2)) |
7633 | return 1 - next_r; | |
951fd09b | 7634 | return 1; |
411e1bfb AM |
7635 | } |
7636 | ||
3b421ab3 AM |
7637 | /* Find (or create) an entry in the tocsave hash table. */ |
7638 | ||
7639 | static struct tocsave_entry * | |
7640 | tocsave_find (struct ppc_link_hash_table *htab, | |
7641 | enum insert_option insert, | |
7642 | Elf_Internal_Sym **local_syms, | |
7643 | const Elf_Internal_Rela *irela, | |
7644 | bfd *ibfd) | |
7645 | { | |
7646 | unsigned long r_indx; | |
7647 | struct elf_link_hash_entry *h; | |
7648 | Elf_Internal_Sym *sym; | |
7649 | struct tocsave_entry ent, *p; | |
7650 | hashval_t hash; | |
7651 | struct tocsave_entry **slot; | |
7652 | ||
7653 | r_indx = ELF64_R_SYM (irela->r_info); | |
7654 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7655 | return NULL; | |
7656 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7657 | { | |
4eca0228 | 7658 | _bfd_error_handler |
871b3ab2 | 7659 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
7660 | return NULL; |
7661 | } | |
7662 | ||
7663 | if (h != NULL) | |
7664 | ent.offset = h->root.u.def.value; | |
7665 | else | |
7666 | ent.offset = sym->st_value; | |
7667 | ent.offset += irela->r_addend; | |
7668 | ||
7669 | hash = tocsave_htab_hash (&ent); | |
7670 | slot = ((struct tocsave_entry **) | |
7671 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7672 | if (slot == NULL) | |
7673 | return NULL; | |
7674 | ||
7675 | if (*slot == NULL) | |
7676 | { | |
7677 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7678 | if (p == NULL) | |
7679 | return NULL; | |
7680 | *p = ent; | |
7681 | *slot = p; | |
7682 | } | |
7683 | return *slot; | |
7684 | } | |
7685 | ||
754021d0 | 7686 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7687 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7688 | |
7689 | static bfd_boolean | |
7690 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7691 | { | |
7692 | struct ppc_link_hash_entry *eh; | |
7693 | asection *sym_sec; | |
74f0fb50 | 7694 | struct _opd_sec_data *opd; |
754021d0 AM |
7695 | |
7696 | if (h->root.type == bfd_link_hash_indirect) | |
7697 | return TRUE; | |
7698 | ||
754021d0 AM |
7699 | if (h->root.type != bfd_link_hash_defined |
7700 | && h->root.type != bfd_link_hash_defweak) | |
7701 | return TRUE; | |
7702 | ||
7703 | eh = (struct ppc_link_hash_entry *) h; | |
7704 | if (eh->adjust_done) | |
7705 | return TRUE; | |
7706 | ||
7707 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7708 | opd = get_opd_info (sym_sec); |
7709 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7710 | { |
51aecdc5 | 7711 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7712 | if (adjust == -1) |
7713 | { | |
7714 | /* This entry has been deleted. */ | |
b3fac117 | 7715 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7716 | if (dsec == NULL) |
7717 | { | |
7718 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7719 | if (discarded_section (dsec)) |
81688140 | 7720 | { |
b3fac117 | 7721 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7722 | break; |
7723 | } | |
7724 | } | |
4025353c | 7725 | eh->elf.root.u.def.value = 0; |
81688140 | 7726 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7727 | } |
7728 | else | |
7729 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7730 | eh->adjust_done = 1; |
7731 | } | |
7732 | return TRUE; | |
7733 | } | |
7734 | ||
8c1d1bb8 | 7735 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7736 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7737 | have already been determined. */ |
7738 | ||
7739 | static bfd_boolean | |
7740 | dec_dynrel_count (bfd_vma r_info, | |
7741 | asection *sec, | |
7742 | struct bfd_link_info *info, | |
7743 | Elf_Internal_Sym **local_syms, | |
7744 | struct elf_link_hash_entry *h, | |
19e08130 | 7745 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7746 | { |
7747 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7748 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7749 | |
7750 | /* Can this reloc be dynamic? This switch, and later tests here | |
7751 | should be kept in sync with the code in check_relocs. */ | |
7752 | r_type = ELF64_R_TYPE (r_info); | |
7753 | switch (r_type) | |
7754 | { | |
7755 | default: | |
7756 | return TRUE; | |
7757 | ||
7758 | case R_PPC64_TPREL16: | |
7759 | case R_PPC64_TPREL16_LO: | |
7760 | case R_PPC64_TPREL16_HI: | |
7761 | case R_PPC64_TPREL16_HA: | |
7762 | case R_PPC64_TPREL16_DS: | |
7763 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7764 | case R_PPC64_TPREL16_HIGH: |
7765 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7766 | case R_PPC64_TPREL16_HIGHER: |
7767 | case R_PPC64_TPREL16_HIGHERA: | |
7768 | case R_PPC64_TPREL16_HIGHEST: | |
7769 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
7770 | case R_PPC64_TPREL64: |
7771 | case R_PPC64_DTPMOD64: | |
7772 | case R_PPC64_DTPREL64: | |
7773 | case R_PPC64_ADDR64: | |
7774 | case R_PPC64_REL30: | |
7775 | case R_PPC64_REL32: | |
7776 | case R_PPC64_REL64: | |
7777 | case R_PPC64_ADDR14: | |
7778 | case R_PPC64_ADDR14_BRNTAKEN: | |
7779 | case R_PPC64_ADDR14_BRTAKEN: | |
7780 | case R_PPC64_ADDR16: | |
7781 | case R_PPC64_ADDR16_DS: | |
7782 | case R_PPC64_ADDR16_HA: | |
7783 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7784 | case R_PPC64_ADDR16_HIGH: |
7785 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7786 | case R_PPC64_ADDR16_HIGHER: |
7787 | case R_PPC64_ADDR16_HIGHERA: | |
7788 | case R_PPC64_ADDR16_HIGHEST: | |
7789 | case R_PPC64_ADDR16_HIGHESTA: | |
7790 | case R_PPC64_ADDR16_LO: | |
7791 | case R_PPC64_ADDR16_LO_DS: | |
7792 | case R_PPC64_ADDR24: | |
7793 | case R_PPC64_ADDR32: | |
7794 | case R_PPC64_UADDR16: | |
7795 | case R_PPC64_UADDR32: | |
7796 | case R_PPC64_UADDR64: | |
7797 | case R_PPC64_TOC: | |
7798 | break; | |
7799 | } | |
7800 | ||
7801 | if (local_syms != NULL) | |
7802 | { | |
7803 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7804 | bfd *ibfd = sec->owner; |
7805 | ||
7806 | r_symndx = ELF64_R_SYM (r_info); | |
7807 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7808 | return FALSE; | |
7809 | } | |
7810 | ||
0e1862bb | 7811 | if ((bfd_link_pic (info) |
1d483afe | 7812 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7813 | || (h != NULL |
198f1157 | 7814 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7815 | || h->root.type == bfd_link_hash_defweak |
7816 | || !h->def_regular)))) | |
7817 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7818 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7819 | && h != NULL |
7820 | && (h->root.type == bfd_link_hash_defweak | |
7821 | || !h->def_regular))) | |
7822 | ; | |
7823 | else | |
7824 | return TRUE; | |
7825 | ||
7826 | if (h != NULL) | |
6edfbbad | 7827 | { |
19e08130 AM |
7828 | struct elf_dyn_relocs *p; |
7829 | struct elf_dyn_relocs **pp; | |
7830 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7831 | ||
7832 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7833 | with local syms for a given section. Also, symbol flags are | |
7834 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7835 | report a dynreloc miscount. */ | |
7836 | if (*pp == NULL && info->gc_sections) | |
7837 | return TRUE; | |
7838 | ||
7839 | while ((p = *pp) != NULL) | |
60124e18 | 7840 | { |
19e08130 AM |
7841 | if (p->sec == sec) |
7842 | { | |
7843 | if (!must_be_dyn_reloc (info, r_type)) | |
7844 | p->pc_count -= 1; | |
7845 | p->count -= 1; | |
7846 | if (p->count == 0) | |
7847 | *pp = p->next; | |
7848 | return TRUE; | |
7849 | } | |
7850 | pp = &p->next; | |
60124e18 | 7851 | } |
6edfbbad | 7852 | } |
19e08130 AM |
7853 | else |
7854 | { | |
7855 | struct ppc_dyn_relocs *p; | |
7856 | struct ppc_dyn_relocs **pp; | |
7857 | void *vpp; | |
7858 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7859 | |
19e08130 AM |
7860 | if (local_syms == NULL) |
7861 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7862 | if (sym_sec == NULL) | |
7863 | sym_sec = sec; | |
c57da1a7 | 7864 | |
19e08130 AM |
7865 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7866 | pp = (struct ppc_dyn_relocs **) vpp; | |
7867 | ||
7868 | if (*pp == NULL && info->gc_sections) | |
7869 | return TRUE; | |
7870 | ||
7871 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7872 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7873 | { |
19e08130 AM |
7874 | if (p->sec == sec && p->ifunc == is_ifunc) |
7875 | { | |
7876 | p->count -= 1; | |
7877 | if (p->count == 0) | |
7878 | *pp = p->next; | |
7879 | return TRUE; | |
7880 | } | |
7881 | pp = &p->next; | |
8c1d1bb8 | 7882 | } |
8c1d1bb8 AM |
7883 | } |
7884 | ||
695344c0 | 7885 | /* xgettext:c-format */ |
cf97bcb0 AM |
7886 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7887 | sec->owner, sec); | |
8c1d1bb8 AM |
7888 | bfd_set_error (bfd_error_bad_value); |
7889 | return FALSE; | |
7890 | } | |
7891 | ||
754021d0 AM |
7892 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7893 | only remove those associated with functions in discarded link-once | |
7894 | sections, or weakly defined functions that have been overridden. It | |
7895 | would be possible to remove many more entries for statically linked | |
7896 | applications. */ | |
7897 | ||
b34976b6 | 7898 | bfd_boolean |
e7d1c40c | 7899 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7900 | { |
7901 | bfd *ibfd; | |
754021d0 | 7902 | bfd_boolean some_edited = FALSE; |
3f764659 | 7903 | asection *need_pad = NULL; |
e7d1c40c AM |
7904 | struct ppc_link_hash_table *htab; |
7905 | ||
7906 | htab = ppc_hash_table (info); | |
7907 | if (htab == NULL) | |
7908 | return FALSE; | |
1e2f5b6e | 7909 | |
c72f2fb2 | 7910 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7911 | { |
7912 | asection *sec; | |
7913 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7914 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7915 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7916 | struct _opd_sec_data *opd; |
51aecdc5 | 7917 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7918 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7919 | |
854b41e7 AM |
7920 | if (!is_ppc64_elf (ibfd)) |
7921 | continue; | |
7922 | ||
1e2f5b6e | 7923 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7924 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7925 | continue; |
7926 | ||
dbaa2011 | 7927 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7928 | continue; |
7929 | ||
1e2f5b6e AM |
7930 | if (sec->output_section == bfd_abs_section_ptr) |
7931 | continue; | |
7932 | ||
7933 | /* Look through the section relocs. */ | |
7934 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7935 | continue; | |
7936 | ||
6cdc0ccc | 7937 | local_syms = NULL; |
0ffa91dd | 7938 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7939 | |
7940 | /* Read the relocations. */ | |
4ce794b7 | 7941 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7942 | info->keep_memory); |
1e2f5b6e | 7943 | if (relstart == NULL) |
b34976b6 | 7944 | return FALSE; |
1e2f5b6e AM |
7945 | |
7946 | /* First run through the relocs to check they are sane, and to | |
7947 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7948 | need_edit = FALSE; |
51aecdc5 | 7949 | broken = FALSE; |
3f764659 | 7950 | need_pad = sec; |
1e2f5b6e | 7951 | relend = relstart + sec->reloc_count; |
50bc7936 | 7952 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7953 | { |
04c9666a | 7954 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7955 | unsigned long r_symndx; |
7956 | asection *sym_sec; | |
7957 | struct elf_link_hash_entry *h; | |
7958 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7959 | bfd_vma offset; |
1e2f5b6e | 7960 | |
51aecdc5 | 7961 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7962 | only interested in the reloc pointing to a function entry |
7963 | point. */ | |
51aecdc5 AM |
7964 | offset = rel->r_offset; |
7965 | if (rel + 1 == relend | |
7966 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7967 | { |
7968 | /* If someone messes with .opd alignment then after a | |
7969 | "ld -r" we might have padding in the middle of .opd. | |
7970 | Also, there's nothing to prevent someone putting | |
7971 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7972 | optimization for them! */ |
3f764659 | 7973 | broken_opd: |
4eca0228 | 7974 | _bfd_error_handler |
871b3ab2 | 7975 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7976 | broken = TRUE; |
1e2f5b6e AM |
7977 | break; |
7978 | } | |
7979 | ||
50bc7936 AM |
7980 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7981 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7982 | { | |
4eca0228 | 7983 | _bfd_error_handler |
695344c0 | 7984 | /* xgettext:c-format */ |
871b3ab2 | 7985 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7986 | ibfd, r_type); |
51aecdc5 | 7987 | broken = TRUE; |
50bc7936 AM |
7988 | break; |
7989 | } | |
7990 | ||
1e2f5b6e | 7991 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7992 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7993 | r_symndx, ibfd)) | |
50bc7936 | 7994 | goto error_ret; |
1e2f5b6e AM |
7995 | |
7996 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7997 | { | |
411e1bfb AM |
7998 | const char *sym_name; |
7999 | if (h != NULL) | |
8000 | sym_name = h->root.root.string; | |
8001 | else | |
26c61ae5 L |
8002 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
8003 | sym_sec); | |
411e1bfb | 8004 | |
4eca0228 | 8005 | _bfd_error_handler |
695344c0 | 8006 | /* xgettext:c-format */ |
871b3ab2 | 8007 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 8008 | ibfd, sym_name); |
51aecdc5 | 8009 | broken = TRUE; |
1e2f5b6e AM |
8010 | break; |
8011 | } | |
8012 | ||
51020317 AM |
8013 | /* opd entries are always for functions defined in the |
8014 | current input bfd. If the symbol isn't defined in the | |
8015 | input bfd, then we won't be using the function in this | |
8016 | bfd; It must be defined in a linkonce section in another | |
8017 | bfd, or is weak. It's also possible that we are | |
8018 | discarding the function due to a linker script /DISCARD/, | |
8019 | which we test for via the output_section. */ | |
8020 | if (sym_sec->owner != ibfd | |
8021 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 8022 | need_edit = TRUE; |
1e2f5b6e | 8023 | |
50bc7936 | 8024 | rel += 2; |
51aecdc5 AM |
8025 | if (rel + 1 == relend |
8026 | || (rel + 2 < relend | |
8027 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
8028 | ++rel; | |
8029 | ||
8030 | if (rel == relend) | |
3f764659 JJ |
8031 | { |
8032 | if (sec->size == offset + 24) | |
8033 | { | |
8034 | need_pad = NULL; | |
8035 | break; | |
8036 | } | |
51aecdc5 | 8037 | if (sec->size == offset + 16) |
3f764659 JJ |
8038 | { |
8039 | cnt_16b++; | |
8040 | break; | |
8041 | } | |
8042 | goto broken_opd; | |
8043 | } | |
3f764659 JJ |
8044 | else if (rel + 1 < relend |
8045 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
8046 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
8047 | { | |
51aecdc5 AM |
8048 | if (rel[0].r_offset == offset + 16) |
8049 | cnt_16b++; | |
8050 | else if (rel[0].r_offset != offset + 24) | |
8051 | goto broken_opd; | |
3f764659 JJ |
8052 | } |
8053 | else | |
8054 | goto broken_opd; | |
1e2f5b6e AM |
8055 | } |
8056 | ||
e7d1c40c | 8057 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 8058 | |
51aecdc5 | 8059 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
8060 | { |
8061 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 8062 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 8063 | bfd_byte *rptr, *wptr; |
983bddc8 | 8064 | bfd_byte *new_contents; |
74f0fb50 AM |
8065 | bfd_size_type amt; |
8066 | ||
983bddc8 | 8067 | new_contents = NULL; |
51aecdc5 | 8068 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 8069 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 8070 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
8071 | if (opd->adjust == NULL) |
8072 | return FALSE; | |
1e2f5b6e AM |
8073 | |
8074 | /* This seems a waste of time as input .opd sections are all | |
8075 | zeros as generated by gcc, but I suppose there's no reason | |
8076 | this will always be so. We might start putting something in | |
8077 | the third word of .opd entries. */ | |
8078 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
8079 | { | |
eea6121a AM |
8080 | bfd_byte *loc; |
8081 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 8082 | { |
eea6121a AM |
8083 | if (loc != NULL) |
8084 | free (loc); | |
50bc7936 | 8085 | error_ret: |
6cdc0ccc AM |
8086 | if (local_syms != NULL |
8087 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8088 | free (local_syms); | |
6cdc0ccc AM |
8089 | if (elf_section_data (sec)->relocs != relstart) |
8090 | free (relstart); | |
b34976b6 | 8091 | return FALSE; |
6cdc0ccc | 8092 | } |
1e2f5b6e AM |
8093 | sec->contents = loc; |
8094 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8095 | } | |
8096 | ||
8097 | elf_section_data (sec)->relocs = relstart; | |
8098 | ||
3f764659 | 8099 | new_contents = sec->contents; |
3f764659 JJ |
8100 | if (add_aux_fields) |
8101 | { | |
8102 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
8103 | if (new_contents == NULL) | |
8104 | return FALSE; | |
51aecdc5 | 8105 | need_pad = NULL; |
3f764659 | 8106 | } |
b4f4e59f AM |
8107 | wptr = new_contents; |
8108 | rptr = sec->contents; | |
1e2f5b6e | 8109 | write_rel = relstart; |
51aecdc5 | 8110 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8111 | { |
50bc7936 AM |
8112 | unsigned long r_symndx; |
8113 | asection *sym_sec; | |
8114 | struct elf_link_hash_entry *h; | |
51aecdc5 | 8115 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 8116 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
8117 | long opd_ent_size; |
8118 | Elf_Internal_Rela *next_rel; | |
8119 | bfd_boolean skip; | |
50bc7936 AM |
8120 | |
8121 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8122 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 8123 | r_symndx, ibfd)) |
50bc7936 AM |
8124 | goto error_ret; |
8125 | ||
51aecdc5 AM |
8126 | next_rel = rel + 2; |
8127 | if (next_rel + 1 == relend | |
8128 | || (next_rel + 2 < relend | |
8129 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
8130 | ++next_rel; | |
8131 | ||
8132 | /* See if the .opd entry is full 24 byte or | |
8133 | 16 byte (with fd_aux entry overlapped with next | |
8134 | fd_func). */ | |
8135 | opd_ent_size = 24; | |
8136 | if (next_rel == relend) | |
1e2f5b6e | 8137 | { |
51aecdc5 | 8138 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8139 | opd_ent_size = 16; |
51aecdc5 AM |
8140 | } |
8141 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8142 | opd_ent_size = 16; | |
3f764659 | 8143 | |
51aecdc5 AM |
8144 | if (h != NULL |
8145 | && h->root.root.string[0] == '.') | |
8146 | { | |
8c5b4e52 AM |
8147 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
8148 | if (fdh != NULL) | |
8149 | { | |
8150 | fdh = ppc_follow_link (fdh); | |
8151 | if (fdh->elf.root.type != bfd_link_hash_defined | |
8152 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8153 | fdh = NULL; | |
8154 | } | |
51aecdc5 | 8155 | } |
1e2f5b6e | 8156 | |
51aecdc5 AM |
8157 | skip = (sym_sec->owner != ibfd |
8158 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8159 | if (skip) | |
8160 | { | |
8161 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8162 | { |
51aecdc5 AM |
8163 | /* Arrange for the function descriptor sym |
8164 | to be dropped. */ | |
8165 | fdh->elf.root.u.def.value = 0; | |
8166 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8167 | } |
51aecdc5 | 8168 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8169 | |
0e1862bb | 8170 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8171 | rel = next_rel; |
8172 | else | |
8173 | while (1) | |
8174 | { | |
8175 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8176 | NULL, h, sym)) | |
8177 | goto error_ret; | |
754021d0 | 8178 | |
51aecdc5 AM |
8179 | if (++rel == next_rel) |
8180 | break; | |
1e2f5b6e | 8181 | |
51aecdc5 AM |
8182 | r_symndx = ELF64_R_SYM (rel->r_info); |
8183 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8184 | r_symndx, ibfd)) | |
8185 | goto error_ret; | |
8186 | } | |
50bc7936 AM |
8187 | } |
8188 | else | |
1e2f5b6e | 8189 | { |
51aecdc5 AM |
8190 | /* We'll be keeping this opd entry. */ |
8191 | long adjust; | |
8192 | ||
8193 | if (fdh != NULL) | |
8194 | { | |
8195 | /* Redefine the function descriptor symbol to | |
8196 | this location in the opd section. It is | |
8197 | necessary to update the value here rather | |
8198 | than using an array of adjustments as we do | |
8199 | for local symbols, because various places | |
8200 | in the generic ELF code use the value | |
8201 | stored in u.def.value. */ | |
8202 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8203 | fdh->adjust_done = 1; | |
8204 | } | |
8205 | ||
8206 | /* Local syms are a bit tricky. We could | |
8207 | tweak them as they can be cached, but | |
8208 | we'd need to look through the local syms | |
8209 | for the function descriptor sym which we | |
8210 | don't have at the moment. So keep an | |
8211 | array of adjustments. */ | |
8212 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8213 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8214 | ||
8215 | if (wptr != rptr) | |
8216 | memcpy (wptr, rptr, opd_ent_size); | |
8217 | wptr += opd_ent_size; | |
8218 | if (add_aux_fields && opd_ent_size == 16) | |
8219 | { | |
8220 | memset (wptr, '\0', 8); | |
8221 | wptr += 8; | |
8222 | } | |
8223 | ||
50bc7936 | 8224 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8225 | new opd entries. */ |
8226 | for ( ; rel != next_rel; ++rel) | |
8227 | { | |
8228 | rel->r_offset += adjust; | |
8229 | if (write_rel != rel) | |
8230 | memcpy (write_rel, rel, sizeof (*rel)); | |
8231 | ++write_rel; | |
8232 | } | |
1e2f5b6e | 8233 | } |
51aecdc5 AM |
8234 | |
8235 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8236 | } |
8237 | ||
3f764659 | 8238 | sec->size = wptr - new_contents; |
1e2f5b6e | 8239 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8240 | if (add_aux_fields) |
8241 | { | |
8242 | free (sec->contents); | |
8243 | sec->contents = new_contents; | |
8244 | } | |
8245 | ||
05bf9422 | 8246 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8247 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8248 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8249 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8250 | some_edited = TRUE; |
1e2f5b6e | 8251 | } |
6cdc0ccc | 8252 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8253 | free (relstart); |
6cdc0ccc | 8254 | |
411e1bfb AM |
8255 | if (local_syms != NULL |
8256 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8257 | { | |
8258 | if (!info->keep_memory) | |
8259 | free (local_syms); | |
8260 | else | |
8261 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8262 | } | |
8263 | } | |
8264 | ||
754021d0 AM |
8265 | if (some_edited) |
8266 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8267 | ||
3f764659 JJ |
8268 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8269 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8270 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8271 | { |
8272 | bfd_byte *p; | |
8273 | ||
8274 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8275 | { | |
8276 | BFD_ASSERT (need_pad->size > 0); | |
8277 | ||
8278 | p = bfd_malloc (need_pad->size + 8); | |
8279 | if (p == NULL) | |
8280 | return FALSE; | |
699733f6 | 8281 | |
3f764659 JJ |
8282 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8283 | p, 0, need_pad->size)) | |
8284 | return FALSE; | |
8285 | ||
8286 | need_pad->contents = p; | |
8287 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8288 | } | |
8289 | else | |
8290 | { | |
8291 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8292 | if (p == NULL) | |
8293 | return FALSE; | |
8294 | ||
8295 | need_pad->contents = p; | |
8296 | } | |
8297 | ||
8298 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8299 | need_pad->size += 8; | |
8300 | } | |
8301 | ||
411e1bfb AM |
8302 | return TRUE; |
8303 | } | |
8304 | ||
3e04d765 AM |
8305 | /* Analyze inline PLT call relocations to see whether calls to locally |
8306 | defined functions can be converted to direct calls. */ | |
8307 | ||
8308 | bfd_boolean | |
8309 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
8310 | { | |
8311 | struct ppc_link_hash_table *htab; | |
8312 | bfd *ibfd; | |
8313 | asection *sec; | |
8314 | bfd_vma low_vma, high_vma, limit; | |
8315 | ||
8316 | htab = ppc_hash_table (info); | |
8317 | if (htab == NULL) | |
8318 | return FALSE; | |
8319 | ||
8320 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
8321 | reduced somewhat to cater for possible stubs that might be added | |
8322 | between the call and its destination. */ | |
8323 | if (htab->params->group_size < 0) | |
8324 | { | |
8325 | limit = -htab->params->group_size; | |
8326 | if (limit == 1) | |
8327 | limit = 0x1e00000; | |
8328 | } | |
8329 | else | |
8330 | { | |
8331 | limit = htab->params->group_size; | |
8332 | if (limit == 1) | |
8333 | limit = 0x1c00000; | |
8334 | } | |
8335 | ||
8336 | low_vma = -1; | |
8337 | high_vma = 0; | |
8338 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
8339 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
8340 | { | |
8341 | if (low_vma > sec->vma) | |
8342 | low_vma = sec->vma; | |
8343 | if (high_vma < sec->vma + sec->size) | |
8344 | high_vma = sec->vma + sec->size; | |
8345 | } | |
8346 | ||
8347 | /* If a "bl" can reach anywhere in local code sections, then we can | |
8348 | convert all inline PLT sequences to direct calls when the symbol | |
8349 | is local. */ | |
8350 | if (high_vma - low_vma < limit) | |
8351 | { | |
8352 | htab->can_convert_all_inline_plt = 1; | |
8353 | return TRUE; | |
8354 | } | |
8355 | ||
8356 | /* Otherwise, go looking through relocs for cases where a direct | |
8357 | call won't reach. Mark the symbol on any such reloc to disable | |
8358 | the optimization and keep the PLT entry as it seems likely that | |
8359 | this will be better than creating trampolines. Note that this | |
8360 | will disable the optimization for all inline PLT calls to a | |
8361 | particular symbol, not just those that won't reach. The | |
8362 | difficulty in doing a more precise optimization is that the | |
8363 | linker needs to make a decision depending on whether a | |
8364 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
8365 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
8366 | the sequence, and there is nothing that ties those relocs | |
8367 | together except their symbol. */ | |
8368 | ||
8369 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
8370 | { | |
8371 | Elf_Internal_Shdr *symtab_hdr; | |
8372 | Elf_Internal_Sym *local_syms; | |
8373 | ||
8374 | if (!is_ppc64_elf (ibfd)) | |
8375 | continue; | |
8376 | ||
8377 | local_syms = NULL; | |
8378 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8379 | ||
8380 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8381 | if (ppc64_elf_section_data (sec)->has_pltcall | |
8382 | && !bfd_is_abs_section (sec->output_section)) | |
8383 | { | |
8384 | Elf_Internal_Rela *relstart, *rel, *relend; | |
8385 | ||
8386 | /* Read the relocations. */ | |
8387 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8388 | info->keep_memory); | |
8389 | if (relstart == NULL) | |
8390 | return FALSE; | |
8391 | ||
8392 | relend = relstart + sec->reloc_count; | |
8393 | for (rel = relstart; rel < relend; ) | |
8394 | { | |
8395 | enum elf_ppc64_reloc_type r_type; | |
8396 | unsigned long r_symndx; | |
8397 | asection *sym_sec; | |
8398 | struct elf_link_hash_entry *h; | |
8399 | Elf_Internal_Sym *sym; | |
8400 | unsigned char *tls_maskp; | |
8401 | ||
8402 | r_type = ELF64_R_TYPE (rel->r_info); | |
8403 | if (r_type != R_PPC64_PLTCALL) | |
8404 | continue; | |
8405 | ||
8406 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8407 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
8408 | r_symndx, ibfd)) | |
8409 | { | |
8410 | if (elf_section_data (sec)->relocs != relstart) | |
8411 | free (relstart); | |
8412 | if (local_syms != NULL | |
8413 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8414 | free (local_syms); | |
8415 | return FALSE; | |
8416 | } | |
8417 | ||
8418 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
8419 | { | |
8420 | bfd_vma from, to; | |
8421 | if (h != NULL) | |
8422 | to = h->root.u.def.value; | |
8423 | else | |
8424 | to = sym->st_value; | |
8425 | to += (rel->r_addend | |
8426 | + sym_sec->output_offset | |
8427 | + sym_sec->output_section->vma); | |
8428 | from = (rel->r_offset | |
8429 | + sec->output_offset | |
8430 | + sec->output_section->vma); | |
8431 | if (to - from + limit < 2 * limit) | |
8432 | *tls_maskp &= ~PLT_KEEP; | |
8433 | } | |
8434 | } | |
8435 | if (elf_section_data (sec)->relocs != relstart) | |
8436 | free (relstart); | |
8437 | } | |
8438 | ||
8439 | if (local_syms != NULL | |
8440 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8441 | { | |
8442 | if (!info->keep_memory) | |
8443 | free (local_syms); | |
8444 | else | |
8445 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8446 | } | |
8447 | } | |
8448 | ||
8449 | return TRUE; | |
8450 | } | |
8451 | ||
e1918d23 | 8452 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8453 | |
e1918d23 | 8454 | asection * |
e7d1c40c | 8455 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8456 | { |
411e1bfb AM |
8457 | struct ppc_link_hash_table *htab; |
8458 | ||
411e1bfb | 8459 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8460 | if (htab == NULL) |
8461 | return NULL; | |
8462 | ||
ee67d69a AM |
8463 | if (abiversion (info->output_bfd) == 1) |
8464 | htab->opd_abi = 1; | |
8465 | ||
e7d1c40c | 8466 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8467 | htab->do_multi_toc = 0; |
8468 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8469 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8470 | |
8b5f1ed8 AM |
8471 | /* Default to --no-plt-localentry, as this option can cause problems |
8472 | with symbol interposition. For example, glibc libpthread.so and | |
8473 | libc.so duplicate many pthread symbols, with a fallback | |
8474 | implementation in libc.so. In some cases the fallback does more | |
8475 | work than the pthread implementation. __pthread_condattr_destroy | |
8476 | is one such symbol: the libpthread.so implementation is | |
8477 | localentry:0 while the libc.so implementation is localentry:8. | |
8478 | An app that "cleverly" uses dlopen to only load necessary | |
8479 | libraries at runtime may omit loading libpthread.so when not | |
8480 | running multi-threaded, which then results in the libc.so | |
8481 | fallback symbols being used and ld.so complaining. Now there | |
8482 | are workarounds in ld (see non_zero_localentry) to detect the | |
8483 | pthread situation, but that may not be the only case where | |
8484 | --plt-localentry can cause trouble. */ | |
f378ab09 | 8485 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 8486 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
8487 | if (htab->params->plt_localentry0 |
8488 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
8489 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
8490 | _bfd_error_handler |
8491 | (_("warning: --plt-localentry is especially dangerous without " | |
8492 | "ld.so support to detect ABI violations")); | |
f378ab09 | 8493 | |
3a71aa26 AM |
8494 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8495 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8496 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8497 | /* Move dynamic linking info to the function descriptor sym. */ |
8498 | if (htab->tls_get_addr != NULL) | |
8499 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8500 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8501 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8502 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8503 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8504 | { |
8505 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8506 | ||
8507 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8508 | FALSE, FALSE, TRUE); | |
8509 | if (opt != NULL) | |
8510 | func_desc_adjust (opt, info); | |
8511 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8512 | FALSE, FALSE, TRUE); | |
8513 | if (opt_fd != NULL | |
8514 | && (opt_fd->root.type == bfd_link_hash_defined | |
8515 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8516 | { | |
8517 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8518 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8519 | be calling __tls_get_addr via a plt call stub, then | |
8520 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8521 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8522 | if (htab->elf.dynamic_sections_created | |
8523 | && tga_fd != NULL | |
8524 | && (tga_fd->type == STT_FUNC | |
8525 | || tga_fd->needs_plt) | |
8526 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 8527 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
8528 | { |
8529 | struct plt_entry *ent; | |
8530 | ||
8531 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8532 | if (ent->plt.refcount > 0) | |
8533 | break; | |
8534 | if (ent != NULL) | |
8535 | { | |
8536 | tga_fd->root.type = bfd_link_hash_indirect; | |
8537 | tga_fd->root.u.i.link = &opt_fd->root; | |
8538 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 8539 | opt_fd->mark = 1; |
a7f2871e AM |
8540 | if (opt_fd->dynindx != -1) |
8541 | { | |
8542 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8543 | opt_fd->dynindx = -1; | |
8544 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8545 | opt_fd->dynstr_index); | |
8546 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8547 | return NULL; |
a7f2871e AM |
8548 | } |
8549 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8550 | tga = &htab->tls_get_addr->elf; | |
8551 | if (opt != NULL && tga != NULL) | |
8552 | { | |
8553 | tga->root.type = bfd_link_hash_indirect; | |
8554 | tga->root.u.i.link = &opt->root; | |
8555 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 8556 | opt->mark = 1; |
a7f2871e AM |
8557 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8558 | tga->forced_local); | |
8559 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8560 | } | |
8561 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8562 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8563 | if (htab->tls_get_addr != NULL) | |
8564 | { | |
8565 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8566 | htab->tls_get_addr->is_func = 1; | |
8567 | } | |
8568 | } | |
8569 | } | |
8570 | } | |
7c9cf415 AM |
8571 | else if (htab->params->tls_get_addr_opt < 0) |
8572 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8573 | } |
33c0ec9d | 8574 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8575 | } |
8387904d | 8576 | |
3a71aa26 AM |
8577 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8578 | HASH1 or HASH2. */ | |
8387904d | 8579 | |
3a71aa26 AM |
8580 | static bfd_boolean |
8581 | branch_reloc_hash_match (const bfd *ibfd, | |
8582 | const Elf_Internal_Rela *rel, | |
8583 | const struct ppc_link_hash_entry *hash1, | |
8584 | const struct ppc_link_hash_entry *hash2) | |
8585 | { | |
8586 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8587 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8588 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8589 | ||
e054468f | 8590 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8591 | { |
3a71aa26 AM |
8592 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8593 | struct elf_link_hash_entry *h; | |
8387904d | 8594 | |
3a71aa26 | 8595 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8596 | h = elf_follow_link (h); |
3a71aa26 AM |
8597 | if (h == &hash1->elf || h == &hash2->elf) |
8598 | return TRUE; | |
a48ebf4d | 8599 | } |
3a71aa26 | 8600 | return FALSE; |
951fd09b | 8601 | } |
411e1bfb | 8602 | |
951fd09b AM |
8603 | /* Run through all the TLS relocs looking for optimization |
8604 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8605 | a preliminary section layout so that we know the TLS segment | |
8606 | offsets. We can't optimize earlier because some optimizations need | |
8607 | to know the tp offset, and we need to optimize before allocating | |
8608 | dynamic relocations. */ | |
8609 | ||
8610 | bfd_boolean | |
33c0ec9d | 8611 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8612 | { |
8613 | bfd *ibfd; | |
8614 | asection *sec; | |
8615 | struct ppc_link_hash_table *htab; | |
663a1470 | 8616 | unsigned char *toc_ref; |
102890f0 | 8617 | int pass; |
951fd09b | 8618 | |
3cbc1e5e | 8619 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8620 | return TRUE; |
8621 | ||
951fd09b | 8622 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8623 | if (htab == NULL) |
8624 | return FALSE; | |
8625 | ||
663a1470 AM |
8626 | /* Make two passes over the relocs. On the first pass, mark toc |
8627 | entries involved with tls relocs, and check that tls relocs | |
8628 | involved in setting up a tls_get_addr call are indeed followed by | |
8629 | such a call. If they are not, we can't do any tls optimization. | |
8630 | On the second pass twiddle tls_mask flags to notify | |
8631 | relocate_section that optimization can be done, and adjust got | |
8632 | and plt refcounts. */ | |
8633 | toc_ref = NULL; | |
8634 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8635 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8636 | { |
8637 | Elf_Internal_Sym *locsyms = NULL; | |
8638 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8639 | ||
102890f0 AM |
8640 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8641 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8642 | { | |
8643 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8644 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8645 | |
102890f0 AM |
8646 | /* Read the relocations. */ |
8647 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8648 | info->keep_memory); | |
8649 | if (relstart == NULL) | |
2915c55b JK |
8650 | { |
8651 | free (toc_ref); | |
8652 | return FALSE; | |
8653 | } | |
411e1bfb | 8654 | |
102890f0 AM |
8655 | relend = relstart + sec->reloc_count; |
8656 | for (rel = relstart; rel < relend; rel++) | |
8657 | { | |
8658 | enum elf_ppc64_reloc_type r_type; | |
8659 | unsigned long r_symndx; | |
8660 | struct elf_link_hash_entry *h; | |
8661 | Elf_Internal_Sym *sym; | |
8662 | asection *sym_sec; | |
f961d9dd AM |
8663 | unsigned char *tls_mask; |
8664 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8665 | bfd_vma value; |
8666 | bfd_boolean ok_tprel, is_local; | |
8667 | long toc_ref_index = 0; | |
8668 | int expecting_tls_get_addr = 0; | |
663a1470 | 8669 | bfd_boolean ret = FALSE; |
411e1bfb | 8670 | |
102890f0 AM |
8671 | r_symndx = ELF64_R_SYM (rel->r_info); |
8672 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8673 | r_symndx, ibfd)) | |
8674 | { | |
8675 | err_free_rel: | |
8676 | if (elf_section_data (sec)->relocs != relstart) | |
8677 | free (relstart); | |
8678 | if (toc_ref != NULL) | |
8679 | free (toc_ref); | |
8680 | if (locsyms != NULL | |
0ffa91dd | 8681 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8682 | != (unsigned char *) locsyms)) |
8683 | free (locsyms); | |
663a1470 | 8684 | return ret; |
102890f0 | 8685 | } |
411e1bfb | 8686 | |
102890f0 AM |
8687 | if (h != NULL) |
8688 | { | |
766bc656 AM |
8689 | if (h->root.type == bfd_link_hash_defined |
8690 | || h->root.type == bfd_link_hash_defweak) | |
8691 | value = h->root.u.def.value; | |
8692 | else if (h->root.type == bfd_link_hash_undefweak) | |
8693 | value = 0; | |
8694 | else | |
663a1470 AM |
8695 | { |
8696 | found_tls_get_addr_arg = 0; | |
8697 | continue; | |
8698 | } | |
102890f0 AM |
8699 | } |
8700 | else | |
8701 | /* Symbols referenced by TLS relocs must be of type | |
8702 | STT_TLS. So no need for .opd local sym adjust. */ | |
8703 | value = sym->st_value; | |
8704 | ||
8705 | ok_tprel = FALSE; | |
8706 | is_local = FALSE; | |
8707 | if (h == NULL | |
8708 | || !h->def_dynamic) | |
8709 | { | |
8710 | is_local = TRUE; | |
766bc656 AM |
8711 | if (h != NULL |
8712 | && h->root.type == bfd_link_hash_undefweak) | |
8713 | ok_tprel = TRUE; | |
c27b8c2a AM |
8714 | else if (sym_sec != NULL |
8715 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8716 | { |
8717 | value += sym_sec->output_offset; | |
8718 | value += sym_sec->output_section->vma; | |
8719 | value -= htab->elf.tls_sec->vma; | |
8720 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8721 | < (bfd_vma) 1 << 32); | |
8722 | } | |
102890f0 | 8723 | } |
951fd09b | 8724 | |
102890f0 | 8725 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8726 | /* If this section has old-style __tls_get_addr calls |
8727 | without marker relocs, then check that each | |
8728 | __tls_get_addr call reloc is preceded by a reloc | |
8729 | that conceivably belongs to the __tls_get_addr arg | |
8730 | setup insn. If we don't find matching arg setup | |
8731 | relocs, don't do any tls optimization. */ | |
8732 | if (pass == 0 | |
8733 | && sec->has_tls_get_addr_call | |
8734 | && h != NULL | |
8735 | && (h == &htab->tls_get_addr->elf | |
8736 | || h == &htab->tls_get_addr_fd->elf) | |
8737 | && !found_tls_get_addr_arg | |
8738 | && is_branch_reloc (r_type)) | |
8739 | { | |
25f53a85 | 8740 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8741 | "TLS optimization disabled\n"), |
8742 | ibfd, sec, rel->r_offset); | |
8743 | ret = TRUE; | |
8744 | goto err_free_rel; | |
8745 | } | |
8746 | ||
8747 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8748 | switch (r_type) |
8749 | { | |
8750 | case R_PPC64_GOT_TLSLD16: | |
8751 | case R_PPC64_GOT_TLSLD16_LO: | |
8752 | expecting_tls_get_addr = 1; | |
663a1470 | 8753 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8754 | /* Fall through. */ |
102890f0 AM |
8755 | |
8756 | case R_PPC64_GOT_TLSLD16_HI: | |
8757 | case R_PPC64_GOT_TLSLD16_HA: | |
8758 | /* These relocs should never be against a symbol | |
8759 | defined in a shared lib. Leave them alone if | |
8760 | that turns out to be the case. */ | |
8761 | if (!is_local) | |
8762 | continue; | |
411e1bfb | 8763 | |
102890f0 | 8764 | /* LD -> LE */ |
411e1bfb | 8765 | tls_set = 0; |
102890f0 AM |
8766 | tls_clear = TLS_LD; |
8767 | tls_type = TLS_TLS | TLS_LD; | |
8768 | break; | |
411e1bfb | 8769 | |
102890f0 AM |
8770 | case R_PPC64_GOT_TLSGD16: |
8771 | case R_PPC64_GOT_TLSGD16_LO: | |
8772 | expecting_tls_get_addr = 1; | |
663a1470 | 8773 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8774 | /* Fall through. */ |
102890f0 AM |
8775 | |
8776 | case R_PPC64_GOT_TLSGD16_HI: | |
8777 | case R_PPC64_GOT_TLSGD16_HA: | |
8778 | if (ok_tprel) | |
8779 | /* GD -> LE */ | |
411e1bfb | 8780 | tls_set = 0; |
102890f0 AM |
8781 | else |
8782 | /* GD -> IE */ | |
8783 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8784 | tls_clear = TLS_GD; | |
8785 | tls_type = TLS_TLS | TLS_GD; | |
8786 | break; | |
8787 | ||
8788 | case R_PPC64_GOT_TPREL16_DS: | |
8789 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8790 | case R_PPC64_GOT_TPREL16_HI: | |
8791 | case R_PPC64_GOT_TPREL16_HA: | |
8792 | if (ok_tprel) | |
8793 | { | |
8794 | /* IE -> LE */ | |
8795 | tls_set = 0; | |
8796 | tls_clear = TLS_TPREL; | |
8797 | tls_type = TLS_TLS | TLS_TPREL; | |
8798 | break; | |
8799 | } | |
411e1bfb AM |
8800 | continue; |
8801 | ||
727fc41e AM |
8802 | case R_PPC64_TLSGD: |
8803 | case R_PPC64_TLSLD: | |
23cedd1d AM |
8804 | if (rel + 1 < relend |
8805 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8806 | { | |
8807 | if (pass != 0 | |
8808 | && ELF64_R_TYPE (rel[1].r_info) != R_PPC64_PLTSEQ) | |
8809 | { | |
8810 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8811 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
8812 | r_symndx, ibfd)) | |
8813 | goto err_free_rel; | |
8814 | if (h != NULL) | |
8815 | { | |
8816 | struct plt_entry *ent = NULL; | |
8817 | ||
8818 | for (ent = h->plt.plist; | |
8819 | ent != NULL; | |
8820 | ent = ent->next) | |
8821 | if (ent->addend == rel[1].r_addend) | |
8822 | break; | |
8823 | ||
8824 | if (ent != NULL | |
8825 | && ent->plt.refcount > 0) | |
8826 | ent->plt.refcount -= 1; | |
8827 | } | |
8828 | } | |
8829 | continue; | |
8830 | } | |
663a1470 | 8831 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8832 | /* Fall through. */ |
663a1470 AM |
8833 | |
8834 | case R_PPC64_TLS: | |
8835 | case R_PPC64_TOC16: | |
8836 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8837 | if (sym_sec == NULL || sym_sec != toc) |
8838 | continue; | |
8839 | ||
8840 | /* Mark this toc entry as referenced by a TLS | |
8841 | code sequence. We can do that now in the | |
8842 | case of R_PPC64_TLS, and after checking for | |
8843 | tls_get_addr for the TOC16 relocs. */ | |
8844 | if (toc_ref == NULL) | |
663a1470 AM |
8845 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8846 | if (toc_ref == NULL) | |
8847 | goto err_free_rel; | |
8848 | ||
102890f0 AM |
8849 | if (h != NULL) |
8850 | value = h->root.u.def.value; | |
8851 | else | |
8852 | value = sym->st_value; | |
8853 | value += rel->r_addend; | |
73242275 AM |
8854 | if (value % 8 != 0) |
8855 | continue; | |
8856 | BFD_ASSERT (value < toc->size | |
8857 | && toc->output_offset % 8 == 0); | |
663a1470 | 8858 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8859 | if (r_type == R_PPC64_TLS |
8860 | || r_type == R_PPC64_TLSGD | |
8861 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8862 | { |
8863 | toc_ref[toc_ref_index] = 1; | |
8864 | continue; | |
8865 | } | |
8866 | ||
8867 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8868 | continue; | |
8869 | ||
8870 | tls_set = 0; | |
8871 | tls_clear = 0; | |
8872 | expecting_tls_get_addr = 2; | |
8873 | break; | |
8874 | ||
8875 | case R_PPC64_TPREL64: | |
8876 | if (pass == 0 | |
8877 | || sec != toc | |
8878 | || toc_ref == NULL | |
663a1470 | 8879 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8880 | continue; |
8881 | if (ok_tprel) | |
8882 | { | |
8883 | /* IE -> LE */ | |
8884 | tls_set = TLS_EXPLICIT; | |
8885 | tls_clear = TLS_TPREL; | |
8886 | break; | |
8887 | } | |
8888 | continue; | |
8889 | ||
8890 | case R_PPC64_DTPMOD64: | |
8891 | if (pass == 0 | |
8892 | || sec != toc | |
8893 | || toc_ref == NULL | |
663a1470 | 8894 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8895 | continue; |
8896 | if (rel + 1 < relend | |
8897 | && (rel[1].r_info | |
8898 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8899 | && rel[1].r_offset == rel->r_offset + 8) | |
8900 | { | |
8901 | if (ok_tprel) | |
8902 | /* GD -> LE */ | |
8903 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8904 | else | |
8905 | /* GD -> IE */ | |
8906 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8907 | tls_clear = TLS_GD; | |
8908 | } | |
8909 | else | |
8910 | { | |
8911 | if (!is_local) | |
8912 | continue; | |
8913 | ||
8914 | /* LD -> LE */ | |
8915 | tls_set = TLS_EXPLICIT; | |
8916 | tls_clear = TLS_LD; | |
8917 | } | |
8918 | break; | |
8919 | ||
8920 | default: | |
8921 | continue; | |
8922 | } | |
8923 | ||
8924 | if (pass == 0) | |
8925 | { | |
727fc41e AM |
8926 | if (!expecting_tls_get_addr |
8927 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8928 | continue; |
8929 | ||
3a71aa26 AM |
8930 | if (rel + 1 < relend |
8931 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8932 | htab->tls_get_addr, | |
8933 | htab->tls_get_addr_fd)) | |
102890f0 | 8934 | { |
3a71aa26 | 8935 | if (expecting_tls_get_addr == 2) |
102890f0 | 8936 | { |
3a71aa26 | 8937 | /* Check for toc tls entries. */ |
f961d9dd | 8938 | unsigned char *toc_tls; |
3a71aa26 AM |
8939 | int retval; |
8940 | ||
8941 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8942 | &locsyms, | |
8943 | rel, ibfd); | |
8944 | if (retval == 0) | |
8945 | goto err_free_rel; | |
663a1470 AM |
8946 | if (toc_tls != NULL) |
8947 | { | |
37da22e5 AM |
8948 | if ((*toc_tls & TLS_TLS) != 0 |
8949 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8950 | found_tls_get_addr_arg = 1; |
8951 | if (retval > 1) | |
8952 | toc_ref[toc_ref_index] = 1; | |
8953 | } | |
102890f0 | 8954 | } |
3a71aa26 | 8955 | continue; |
102890f0 AM |
8956 | } |
8957 | ||
102890f0 AM |
8958 | /* Uh oh, we didn't find the expected call. We |
8959 | could just mark this symbol to exclude it | |
8960 | from tls optimization but it's safer to skip | |
663a1470 | 8961 | the entire optimization. */ |
695344c0 | 8962 | /* xgettext:c-format */ |
25f53a85 | 8963 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8964 | "TLS optimization disabled\n"), |
8965 | ibfd, sec, rel->r_offset); | |
8966 | ret = TRUE; | |
8967 | goto err_free_rel; | |
102890f0 AM |
8968 | } |
8969 | ||
37da22e5 AM |
8970 | /* If we don't have old-style __tls_get_addr calls |
8971 | without TLSGD/TLSLD marker relocs, and we haven't | |
8972 | found a new-style __tls_get_addr call with a | |
8973 | marker for this symbol, then we either have a | |
8974 | broken object file or an -mlongcall style | |
8975 | indirect call to __tls_get_addr without a marker. | |
8976 | Disable optimization in this case. */ | |
8977 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8978 | && (tls_set & TLS_EXPLICIT) == 0 | |
8979 | && !sec->has_tls_get_addr_call | |
8980 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
8981 | != (TLS_TLS | TLS_MARK))) | |
8982 | continue; | |
8983 | ||
23cedd1d | 8984 | if (expecting_tls_get_addr) |
102890f0 | 8985 | { |
23cedd1d AM |
8986 | struct plt_entry *ent = NULL; |
8987 | ||
8988 | if (htab->tls_get_addr != NULL) | |
8989 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8990 | ent != NULL; | |
8991 | ent = ent->next) | |
8992 | if (ent->addend == 0) | |
102890f0 | 8993 | break; |
411e1bfb | 8994 | |
23cedd1d AM |
8995 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
8996 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8997 | ent != NULL; | |
8998 | ent = ent->next) | |
8999 | if (ent->addend == 0) | |
102890f0 | 9000 | break; |
23cedd1d AM |
9001 | |
9002 | if (ent != NULL | |
9003 | && ent->plt.refcount > 0) | |
9004 | ent->plt.refcount -= 1; | |
102890f0 | 9005 | } |
411e1bfb | 9006 | |
102890f0 | 9007 | if (tls_clear == 0) |
30038c59 AM |
9008 | continue; |
9009 | ||
102890f0 AM |
9010 | if ((tls_set & TLS_EXPLICIT) == 0) |
9011 | { | |
9012 | struct got_entry *ent; | |
411e1bfb | 9013 | |
102890f0 AM |
9014 | /* Adjust got entry for this reloc. */ |
9015 | if (h != NULL) | |
9016 | ent = h->got.glist; | |
9017 | else | |
9018 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 9019 | |
102890f0 AM |
9020 | for (; ent != NULL; ent = ent->next) |
9021 | if (ent->addend == rel->r_addend | |
9022 | && ent->owner == ibfd | |
9023 | && ent->tls_type == tls_type) | |
9024 | break; | |
9025 | if (ent == NULL) | |
9026 | abort (); | |
411e1bfb | 9027 | |
102890f0 AM |
9028 | if (tls_set == 0) |
9029 | { | |
9030 | /* We managed to get rid of a got entry. */ | |
9031 | if (ent->got.refcount > 0) | |
9032 | ent->got.refcount -= 1; | |
9033 | } | |
9034 | } | |
9035 | else | |
9036 | { | |
9037 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
9038 | we'll lose one or two dyn relocs. */ | |
9039 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 9040 | NULL, h, sym)) |
102890f0 | 9041 | return FALSE; |
411e1bfb | 9042 | |
102890f0 AM |
9043 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
9044 | { | |
9045 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 9046 | NULL, h, sym)) |
102890f0 AM |
9047 | return FALSE; |
9048 | } | |
9049 | } | |
411e1bfb | 9050 | |
102890f0 AM |
9051 | *tls_mask |= tls_set; |
9052 | *tls_mask &= ~tls_clear; | |
9053 | } | |
8c1d1bb8 | 9054 | |
102890f0 AM |
9055 | if (elf_section_data (sec)->relocs != relstart) |
9056 | free (relstart); | |
9057 | } | |
411e1bfb | 9058 | |
663a1470 AM |
9059 | if (locsyms != NULL |
9060 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
9061 | { | |
9062 | if (!info->keep_memory) | |
9063 | free (locsyms); | |
9064 | else | |
9065 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
9066 | } | |
9067 | } | |
411e1bfb | 9068 | |
663a1470 AM |
9069 | if (toc_ref != NULL) |
9070 | free (toc_ref); | |
9a23f96e | 9071 | htab->do_tls_opt = 1; |
b34976b6 | 9072 | return TRUE; |
1e2f5b6e | 9073 | } |
b34976b6 | 9074 | |
c5614fa4 AM |
9075 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
9076 | the values of any global symbols in a toc section that has been | |
9077 | edited. Globals in toc sections should be a rarity, so this function | |
9078 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 9079 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
9080 | |
9081 | struct adjust_toc_info | |
9082 | { | |
9083 | asection *toc; | |
9084 | unsigned long *skip; | |
9085 | bfd_boolean global_toc_syms; | |
9086 | }; | |
9087 | ||
ba761f19 AM |
9088 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
9089 | ||
c5614fa4 AM |
9090 | static bfd_boolean |
9091 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
9092 | { | |
9093 | struct ppc_link_hash_entry *eh; | |
9094 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 9095 | unsigned long i; |
c5614fa4 | 9096 | |
c5614fa4 AM |
9097 | if (h->root.type != bfd_link_hash_defined |
9098 | && h->root.type != bfd_link_hash_defweak) | |
9099 | return TRUE; | |
9100 | ||
9101 | eh = (struct ppc_link_hash_entry *) h; | |
9102 | if (eh->adjust_done) | |
9103 | return TRUE; | |
9104 | ||
9105 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
9106 | { | |
854b41e7 AM |
9107 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
9108 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 9109 | else |
854b41e7 AM |
9110 | i = eh->elf.root.u.def.value >> 3; |
9111 | ||
ba761f19 | 9112 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 9113 | { |
4eca0228 | 9114 | _bfd_error_handler |
854b41e7 AM |
9115 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
9116 | do | |
9117 | ++i; | |
ba761f19 | 9118 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 9119 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 9120 | } |
854b41e7 AM |
9121 | |
9122 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
9123 | eh->adjust_done = 1; |
9124 | } | |
9125 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
9126 | toc_inf->global_toc_syms = TRUE; | |
9127 | ||
9128 | return TRUE; | |
9129 | } | |
9130 | ||
39eeab25 AM |
9131 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
9132 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
9133 | |
9134 | static bfd_boolean | |
39eeab25 | 9135 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 9136 | { |
39eeab25 AM |
9137 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
9138 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
9139 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
9140 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
9141 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
9142 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
9143 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
9144 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
9145 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
9146 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
9147 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
9148 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
9149 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
9150 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
9151 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
9152 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
9153 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
9154 | /* Exclude lfqu by testing reloc. If relocs are ever | |
9155 | defined for the reduced D field in psq_lu then those | |
9156 | will need testing too. */ | |
9157 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9158 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
9159 | && (insn & 1) == 0) | |
9160 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
9161 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
9162 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
9163 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9164 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
9165 | && (insn & 1) == 0)); | |
560c8763 AM |
9166 | } |
9167 | ||
c5614fa4 AM |
9168 | /* Examine all relocs referencing .toc sections in order to remove |
9169 | unused .toc entries. */ | |
9170 | ||
9171 | bfd_boolean | |
33c0ec9d | 9172 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
9173 | { |
9174 | bfd *ibfd; | |
9175 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 9176 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 9177 | |
67f0cbdb | 9178 | htab->do_toc_opt = 1; |
c5614fa4 | 9179 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 9180 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
9181 | { |
9182 | asection *toc, *sec; | |
9183 | Elf_Internal_Shdr *symtab_hdr; | |
9184 | Elf_Internal_Sym *local_syms; | |
425b145b | 9185 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
9186 | unsigned long *skip, *drop; |
9187 | unsigned char *used; | |
9188 | unsigned char *keep, last, some_unused; | |
9189 | ||
854b41e7 AM |
9190 | if (!is_ppc64_elf (ibfd)) |
9191 | continue; | |
9192 | ||
c5614fa4 AM |
9193 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
9194 | if (toc == NULL | |
92b7a70f | 9195 | || toc->size == 0 |
dbaa2011 AM |
9196 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
9197 | || discarded_section (toc)) | |
c5614fa4 AM |
9198 | continue; |
9199 | ||
425b145b | 9200 | toc_relocs = NULL; |
c5614fa4 | 9201 | local_syms = NULL; |
0ffa91dd | 9202 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
9203 | |
9204 | /* Look at sections dropped from the final link. */ | |
9205 | skip = NULL; | |
9206 | relstart = NULL; | |
9207 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9208 | { | |
9209 | if (sec->reloc_count == 0 | |
dbaa2011 | 9210 | || !discarded_section (sec) |
c5614fa4 AM |
9211 | || get_opd_info (sec) |
9212 | || (sec->flags & SEC_ALLOC) == 0 | |
9213 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9214 | continue; | |
9215 | ||
9216 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
9217 | if (relstart == NULL) | |
9218 | goto error_ret; | |
9219 | ||
9220 | /* Run through the relocs to see which toc entries might be | |
9221 | unused. */ | |
9222 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9223 | { | |
9224 | enum elf_ppc64_reloc_type r_type; | |
9225 | unsigned long r_symndx; | |
9226 | asection *sym_sec; | |
9227 | struct elf_link_hash_entry *h; | |
9228 | Elf_Internal_Sym *sym; | |
9229 | bfd_vma val; | |
9230 | ||
9231 | r_type = ELF64_R_TYPE (rel->r_info); | |
9232 | switch (r_type) | |
9233 | { | |
9234 | default: | |
9235 | continue; | |
9236 | ||
9237 | case R_PPC64_TOC16: | |
9238 | case R_PPC64_TOC16_LO: | |
9239 | case R_PPC64_TOC16_HI: | |
9240 | case R_PPC64_TOC16_HA: | |
9241 | case R_PPC64_TOC16_DS: | |
9242 | case R_PPC64_TOC16_LO_DS: | |
9243 | break; | |
9244 | } | |
9245 | ||
9246 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9247 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9248 | r_symndx, ibfd)) | |
9249 | goto error_ret; | |
9250 | ||
9251 | if (sym_sec != toc) | |
9252 | continue; | |
9253 | ||
9254 | if (h != NULL) | |
9255 | val = h->root.u.def.value; | |
9256 | else | |
9257 | val = sym->st_value; | |
9258 | val += rel->r_addend; | |
9259 | ||
9260 | if (val >= toc->size) | |
9261 | continue; | |
9262 | ||
9263 | /* Anything in the toc ought to be aligned to 8 bytes. | |
9264 | If not, don't mark as unused. */ | |
9265 | if (val & 7) | |
9266 | continue; | |
9267 | ||
9268 | if (skip == NULL) | |
9269 | { | |
854b41e7 | 9270 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
9271 | if (skip == NULL) |
9272 | goto error_ret; | |
9273 | } | |
9274 | ||
ba761f19 | 9275 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
9276 | } |
9277 | ||
9278 | if (elf_section_data (sec)->relocs != relstart) | |
9279 | free (relstart); | |
9280 | } | |
9281 | ||
ba761f19 AM |
9282 | /* For largetoc loads of address constants, we can convert |
9283 | . addis rx,2,addr@got@ha | |
9284 | . ld ry,addr@got@l(rx) | |
9285 | to | |
9286 | . addis rx,2,addr@toc@ha | |
9287 | . addi ry,rx,addr@toc@l | |
9288 | when addr is within 2G of the toc pointer. This then means | |
9289 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9290 | |
ba761f19 AM |
9291 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9292 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9293 | && toc->reloc_count != 0) | |
9294 | { | |
9295 | /* Read toc relocs. */ | |
425b145b AM |
9296 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9297 | info->keep_memory); | |
9298 | if (toc_relocs == NULL) | |
ba761f19 AM |
9299 | goto error_ret; |
9300 | ||
425b145b | 9301 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9302 | { |
9303 | enum elf_ppc64_reloc_type r_type; | |
9304 | unsigned long r_symndx; | |
9305 | asection *sym_sec; | |
9306 | struct elf_link_hash_entry *h; | |
9307 | Elf_Internal_Sym *sym; | |
9308 | bfd_vma val, addr; | |
9309 | ||
9310 | r_type = ELF64_R_TYPE (rel->r_info); | |
9311 | if (r_type != R_PPC64_ADDR64) | |
9312 | continue; | |
9313 | ||
9314 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9315 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9316 | r_symndx, ibfd)) | |
9317 | goto error_ret; | |
9318 | ||
425b145b | 9319 | if (sym_sec == NULL |
c27b8c2a | 9320 | || sym_sec->output_section == NULL |
dbaa2011 | 9321 | || discarded_section (sym_sec)) |
425b145b AM |
9322 | continue; |
9323 | ||
afe397ea | 9324 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
9325 | continue; |
9326 | ||
9327 | if (h != NULL) | |
bddc25c9 AM |
9328 | { |
9329 | if (h->type == STT_GNU_IFUNC) | |
9330 | continue; | |
9331 | val = h->root.u.def.value; | |
9332 | } | |
ba761f19 | 9333 | else |
bddc25c9 AM |
9334 | { |
9335 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9336 | continue; | |
9337 | val = sym->st_value; | |
9338 | } | |
ba761f19 AM |
9339 | val += rel->r_addend; |
9340 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9341 | ||
9342 | /* We don't yet know the exact toc pointer value, but we | |
9343 | know it will be somewhere in the toc section. Don't | |
9344 | optimize if the difference from any possible toc | |
9345 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9346 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9347 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9348 | continue; | |
9349 | ||
9350 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9351 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9352 | continue; | |
9353 | ||
9354 | if (skip == NULL) | |
9355 | { | |
9356 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9357 | if (skip == NULL) | |
9358 | goto error_ret; | |
9359 | } | |
9360 | ||
9361 | skip[rel->r_offset >> 3] | |
425b145b | 9362 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9363 | } |
ba761f19 AM |
9364 | } |
9365 | ||
c5614fa4 AM |
9366 | if (skip == NULL) |
9367 | continue; | |
9368 | ||
9369 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9370 | if (used == NULL) | |
9371 | { | |
9372 | error_ret: | |
9373 | if (local_syms != NULL | |
9374 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9375 | free (local_syms); | |
9376 | if (sec != NULL | |
9377 | && relstart != NULL | |
9378 | && elf_section_data (sec)->relocs != relstart) | |
9379 | free (relstart); | |
425b145b AM |
9380 | if (toc_relocs != NULL |
9381 | && elf_section_data (toc)->relocs != toc_relocs) | |
9382 | free (toc_relocs); | |
c5614fa4 AM |
9383 | if (skip != NULL) |
9384 | free (skip); | |
9385 | return FALSE; | |
9386 | } | |
9387 | ||
30038c59 AM |
9388 | /* Now check all kept sections that might reference the toc. |
9389 | Check the toc itself last. */ | |
9390 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9391 | : ibfd->sections); | |
c5614fa4 | 9392 | sec != NULL; |
c5614fa4 | 9393 | sec = (sec == toc ? NULL |
c5614fa4 | 9394 | : sec->next == NULL ? toc |
30038c59 | 9395 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9396 | : sec->next)) |
9397 | { | |
9398 | int repeat; | |
9399 | ||
9400 | if (sec->reloc_count == 0 | |
dbaa2011 | 9401 | || discarded_section (sec) |
c5614fa4 AM |
9402 | || get_opd_info (sec) |
9403 | || (sec->flags & SEC_ALLOC) == 0 | |
9404 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9405 | continue; | |
9406 | ||
854b41e7 AM |
9407 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9408 | info->keep_memory); | |
c5614fa4 | 9409 | if (relstart == NULL) |
2915c55b JK |
9410 | { |
9411 | free (used); | |
9412 | goto error_ret; | |
9413 | } | |
c5614fa4 AM |
9414 | |
9415 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9416 | do |
d4f1ee75 AM |
9417 | { |
9418 | repeat = 0; | |
9419 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9420 | { | |
9421 | enum elf_ppc64_reloc_type r_type; | |
9422 | unsigned long r_symndx; | |
9423 | asection *sym_sec; | |
9424 | struct elf_link_hash_entry *h; | |
9425 | Elf_Internal_Sym *sym; | |
9426 | bfd_vma val; | |
9427 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9428 | |
d4f1ee75 AM |
9429 | r_type = ELF64_R_TYPE (rel->r_info); |
9430 | switch (r_type) | |
9431 | { | |
9432 | default: | |
9433 | insn_check = no_check; | |
9434 | break; | |
98528052 | 9435 | |
d4f1ee75 AM |
9436 | case R_PPC64_GOT_TLSLD16_HA: |
9437 | case R_PPC64_GOT_TLSGD16_HA: | |
9438 | case R_PPC64_GOT_TPREL16_HA: | |
9439 | case R_PPC64_GOT_DTPREL16_HA: | |
9440 | case R_PPC64_GOT16_HA: | |
9441 | case R_PPC64_TOC16_HA: | |
9442 | insn_check = check_ha; | |
9443 | break; | |
98528052 | 9444 | |
d4f1ee75 AM |
9445 | case R_PPC64_GOT_TLSLD16_LO: |
9446 | case R_PPC64_GOT_TLSGD16_LO: | |
9447 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9448 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9449 | case R_PPC64_GOT16_LO: | |
9450 | case R_PPC64_GOT16_LO_DS: | |
9451 | case R_PPC64_TOC16_LO: | |
9452 | case R_PPC64_TOC16_LO_DS: | |
9453 | insn_check = check_lo; | |
9454 | break; | |
9455 | } | |
560c8763 | 9456 | |
d4f1ee75 AM |
9457 | if (insn_check != no_check) |
9458 | { | |
9459 | bfd_vma off = rel->r_offset & ~3; | |
9460 | unsigned char buf[4]; | |
9461 | unsigned int insn; | |
c5614fa4 | 9462 | |
d4f1ee75 AM |
9463 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9464 | { | |
9465 | free (used); | |
9466 | goto error_ret; | |
9467 | } | |
9468 | insn = bfd_get_32 (ibfd, buf); | |
9469 | if (insn_check == check_lo | |
39eeab25 | 9470 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
9471 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
9472 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9473 | { | |
9474 | char str[12]; | |
9475 | ||
9476 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9477 | sprintf (str, "%#08x", insn); | |
9478 | info->callbacks->einfo | |
695344c0 | 9479 | /* xgettext:c-format */ |
174d0a74 | 9480 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 9481 | " %s instruction\n"), |
d4f1ee75 AM |
9482 | ibfd, sec, rel->r_offset & ~3, str); |
9483 | } | |
9484 | } | |
c5614fa4 | 9485 | |
d4f1ee75 AM |
9486 | switch (r_type) |
9487 | { | |
9488 | case R_PPC64_TOC16: | |
9489 | case R_PPC64_TOC16_LO: | |
9490 | case R_PPC64_TOC16_HI: | |
9491 | case R_PPC64_TOC16_HA: | |
9492 | case R_PPC64_TOC16_DS: | |
9493 | case R_PPC64_TOC16_LO_DS: | |
9494 | /* In case we're taking addresses of toc entries. */ | |
9495 | case R_PPC64_ADDR64: | |
9496 | break; | |
c5614fa4 | 9497 | |
d4f1ee75 AM |
9498 | default: |
9499 | continue; | |
9500 | } | |
c5614fa4 | 9501 | |
d4f1ee75 AM |
9502 | r_symndx = ELF64_R_SYM (rel->r_info); |
9503 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9504 | r_symndx, ibfd)) | |
9505 | { | |
9506 | free (used); | |
9507 | goto error_ret; | |
9508 | } | |
c5614fa4 | 9509 | |
d4f1ee75 AM |
9510 | if (sym_sec != toc) |
9511 | continue; | |
c5614fa4 | 9512 | |
d4f1ee75 AM |
9513 | if (h != NULL) |
9514 | val = h->root.u.def.value; | |
9515 | else | |
9516 | val = sym->st_value; | |
9517 | val += rel->r_addend; | |
ba761f19 | 9518 | |
d4f1ee75 AM |
9519 | if (val >= toc->size) |
9520 | continue; | |
ba761f19 | 9521 | |
d4f1ee75 AM |
9522 | if ((skip[val >> 3] & can_optimize) != 0) |
9523 | { | |
9524 | bfd_vma off; | |
9525 | unsigned char opc; | |
9526 | ||
9527 | switch (r_type) | |
9528 | { | |
9529 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9530 | break; |
ba761f19 | 9531 | |
d4f1ee75 AM |
9532 | case R_PPC64_TOC16_LO_DS: |
9533 | off = rel->r_offset; | |
9534 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9535 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9536 | off, 1)) | |
9537 | { | |
9538 | free (used); | |
9539 | goto error_ret; | |
9540 | } | |
9541 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9542 | break; | |
1a0670f3 | 9543 | /* Fall through. */ |
ba761f19 | 9544 | |
d4f1ee75 AM |
9545 | default: |
9546 | /* Wrong sort of reloc, or not a ld. We may | |
9547 | as well clear ref_from_discarded too. */ | |
9548 | skip[val >> 3] = 0; | |
9549 | } | |
9550 | } | |
9551 | ||
9552 | if (sec != toc) | |
9553 | used[val >> 3] = 1; | |
9554 | /* For the toc section, we only mark as used if this | |
9555 | entry itself isn't unused. */ | |
9556 | else if ((used[rel->r_offset >> 3] | |
9557 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9558 | && !used[val >> 3]) | |
9559 | { | |
9560 | /* Do all the relocs again, to catch reference | |
9561 | chains. */ | |
9562 | repeat = 1; | |
9563 | used[val >> 3] = 1; | |
9564 | } | |
9565 | } | |
9566 | } | |
c5614fa4 | 9567 | while (repeat); |
854b41e7 AM |
9568 | |
9569 | if (elf_section_data (sec)->relocs != relstart) | |
9570 | free (relstart); | |
c5614fa4 AM |
9571 | } |
9572 | ||
9573 | /* Merge the used and skip arrays. Assume that TOC | |
9574 | doublewords not appearing as either used or unused belong | |
de194d85 | 9575 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9576 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9577 | drop < skip + (toc->size + 7) / 8; | |
9578 | ++drop, ++keep) | |
9579 | { | |
9580 | if (*keep) | |
9581 | { | |
ba761f19 AM |
9582 | *drop &= ~ref_from_discarded; |
9583 | if ((*drop & can_optimize) != 0) | |
9584 | some_unused = 1; | |
c5614fa4 AM |
9585 | last = 0; |
9586 | } | |
b140b010 | 9587 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9588 | { |
9589 | some_unused = 1; | |
ba761f19 | 9590 | last = ref_from_discarded; |
c5614fa4 AM |
9591 | } |
9592 | else | |
9593 | *drop = last; | |
9594 | } | |
9595 | ||
9596 | free (used); | |
9597 | ||
9598 | if (some_unused) | |
9599 | { | |
9600 | bfd_byte *contents, *src; | |
9601 | unsigned long off; | |
d62b3684 | 9602 | Elf_Internal_Sym *sym; |
ba761f19 | 9603 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9604 | |
9605 | /* Shuffle the toc contents, and at the same time convert the | |
9606 | skip array from booleans into offsets. */ | |
9607 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9608 | goto error_ret; | |
9609 | ||
9610 | elf_section_data (toc)->this_hdr.contents = contents; | |
9611 | ||
9612 | for (src = contents, off = 0, drop = skip; | |
9613 | src < contents + toc->size; | |
9614 | src += 8, ++drop) | |
9615 | { | |
ba761f19 AM |
9616 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9617 | off += 8; | |
c5614fa4 AM |
9618 | else if (off != 0) |
9619 | { | |
9620 | *drop = off; | |
9621 | memcpy (src - off, src, 8); | |
9622 | } | |
9623 | } | |
854b41e7 | 9624 | *drop = off; |
c5614fa4 AM |
9625 | toc->rawsize = toc->size; |
9626 | toc->size = src - contents - off; | |
9627 | ||
ba761f19 AM |
9628 | /* Adjust addends for relocs against the toc section sym, |
9629 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9630 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9631 | { | |
9632 | if (sec->reloc_count == 0 | |
dbaa2011 | 9633 | || discarded_section (sec)) |
c5614fa4 AM |
9634 | continue; |
9635 | ||
9636 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9637 | info->keep_memory); |
c5614fa4 AM |
9638 | if (relstart == NULL) |
9639 | goto error_ret; | |
9640 | ||
9641 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9642 | { | |
9643 | enum elf_ppc64_reloc_type r_type; | |
9644 | unsigned long r_symndx; | |
9645 | asection *sym_sec; | |
9646 | struct elf_link_hash_entry *h; | |
854b41e7 | 9647 | bfd_vma val; |
c5614fa4 AM |
9648 | |
9649 | r_type = ELF64_R_TYPE (rel->r_info); | |
9650 | switch (r_type) | |
9651 | { | |
9652 | default: | |
9653 | continue; | |
9654 | ||
9655 | case R_PPC64_TOC16: | |
9656 | case R_PPC64_TOC16_LO: | |
9657 | case R_PPC64_TOC16_HI: | |
9658 | case R_PPC64_TOC16_HA: | |
9659 | case R_PPC64_TOC16_DS: | |
9660 | case R_PPC64_TOC16_LO_DS: | |
9661 | case R_PPC64_ADDR64: | |
9662 | break; | |
9663 | } | |
9664 | ||
9665 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9666 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9667 | r_symndx, ibfd)) | |
9668 | goto error_ret; | |
9669 | ||
ba761f19 | 9670 | if (sym_sec != toc) |
c5614fa4 AM |
9671 | continue; |
9672 | ||
ba761f19 AM |
9673 | if (h != NULL) |
9674 | val = h->root.u.def.value; | |
9675 | else | |
9676 | { | |
9677 | val = sym->st_value; | |
9678 | if (val != 0) | |
9679 | local_toc_syms = TRUE; | |
9680 | } | |
9681 | ||
9682 | val += rel->r_addend; | |
854b41e7 AM |
9683 | |
9684 | if (val > toc->rawsize) | |
9685 | val = toc->rawsize; | |
ba761f19 AM |
9686 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9687 | continue; | |
9688 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9689 | { | |
9690 | Elf_Internal_Rela *tocrel | |
425b145b | 9691 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9692 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9693 | ||
9694 | switch (r_type) | |
9695 | { | |
9696 | case R_PPC64_TOC16_HA: | |
9697 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9698 | break; | |
9699 | ||
9700 | case R_PPC64_TOC16_LO_DS: | |
9701 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9702 | break; | |
9703 | ||
9704 | default: | |
28942f62 AM |
9705 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9706 | ppc_howto_init (); | |
b140b010 | 9707 | info->callbacks->einfo |
695344c0 | 9708 | /* xgettext:c-format */ |
174d0a74 | 9709 | (_("%H: %s references " |
b140b010 AM |
9710 | "optimized away TOC entry\n"), |
9711 | ibfd, sec, rel->r_offset, | |
9712 | ppc64_elf_howto_table[r_type]->name); | |
9713 | bfd_set_error (bfd_error_bad_value); | |
9714 | goto error_ret; | |
ba761f19 AM |
9715 | } |
9716 | rel->r_addend = tocrel->r_addend; | |
9717 | elf_section_data (sec)->relocs = relstart; | |
9718 | continue; | |
9719 | } | |
9720 | ||
9721 | if (h != NULL || sym->st_value != 0) | |
9722 | continue; | |
854b41e7 AM |
9723 | |
9724 | rel->r_addend -= skip[val >> 3]; | |
9725 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9726 | } |
854b41e7 AM |
9727 | |
9728 | if (elf_section_data (sec)->relocs != relstart) | |
9729 | free (relstart); | |
c5614fa4 AM |
9730 | } |
9731 | ||
9732 | /* We shouldn't have local or global symbols defined in the TOC, | |
9733 | but handle them anyway. */ | |
df22d223 AM |
9734 | if (local_syms != NULL) |
9735 | for (sym = local_syms; | |
9736 | sym < local_syms + symtab_hdr->sh_info; | |
9737 | ++sym) | |
9738 | if (sym->st_value != 0 | |
9739 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9740 | { | |
9741 | unsigned long i; | |
854b41e7 | 9742 | |
df22d223 AM |
9743 | if (sym->st_value > toc->rawsize) |
9744 | i = toc->rawsize >> 3; | |
9745 | else | |
9746 | i = sym->st_value >> 3; | |
854b41e7 | 9747 | |
df22d223 AM |
9748 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9749 | { | |
9750 | if (local_toc_syms) | |
4eca0228 | 9751 | _bfd_error_handler |
df22d223 AM |
9752 | (_("%s defined on removed toc entry"), |
9753 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9754 | do | |
9755 | ++i; | |
9756 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9757 | sym->st_value = (bfd_vma) i << 3; | |
9758 | } | |
d62b3684 | 9759 | |
df22d223 AM |
9760 | sym->st_value -= skip[i]; |
9761 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9762 | } | |
c5614fa4 | 9763 | |
854b41e7 | 9764 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9765 | if (toc_inf.global_toc_syms) |
9766 | { | |
9767 | toc_inf.toc = toc; | |
9768 | toc_inf.skip = skip; | |
9769 | toc_inf.global_toc_syms = FALSE; | |
9770 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9771 | &toc_inf); | |
9772 | } | |
854b41e7 AM |
9773 | |
9774 | if (toc->reloc_count != 0) | |
9775 | { | |
d4730f92 | 9776 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9777 | Elf_Internal_Rela *wrel; |
9778 | bfd_size_type sz; | |
9779 | ||
854b41e7 | 9780 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9781 | if (toc_relocs == NULL) |
9782 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9783 | info->keep_memory); | |
9784 | if (toc_relocs == NULL) | |
9785 | goto error_ret; | |
9786 | ||
425b145b AM |
9787 | wrel = toc_relocs; |
9788 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9789 | if ((skip[rel->r_offset >> 3] |
9790 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9791 | { |
9792 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9793 | wrel->r_info = rel->r_info; | |
9794 | wrel->r_addend = rel->r_addend; | |
9795 | ++wrel; | |
9796 | } | |
9797 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9798 | &local_syms, NULL, NULL)) | |
9799 | goto error_ret; | |
9800 | ||
425b145b AM |
9801 | elf_section_data (toc)->relocs = toc_relocs; |
9802 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9803 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9804 | sz = rel_hdr->sh_entsize; | |
9805 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9806 | } |
c5614fa4 | 9807 | } |
28be611c AM |
9808 | else if (toc_relocs != NULL |
9809 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9810 | free (toc_relocs); |
c5614fa4 AM |
9811 | |
9812 | if (local_syms != NULL | |
9813 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9814 | { | |
9815 | if (!info->keep_memory) | |
9816 | free (local_syms); | |
9817 | else | |
9818 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9819 | } | |
9820 | free (skip); | |
9821 | } | |
9822 | ||
9823 | return TRUE; | |
9824 | } | |
9825 | ||
1bbe0902 AM |
9826 | /* Return true iff input section I references the TOC using |
9827 | instructions limited to +/-32k offsets. */ | |
9828 | ||
9829 | bfd_boolean | |
9830 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9831 | { | |
9832 | return (is_ppc64_elf (i->owner) | |
9833 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9834 | } | |
9835 | ||
927be08e AM |
9836 | /* Allocate space for one GOT entry. */ |
9837 | ||
9838 | static void | |
9839 | allocate_got (struct elf_link_hash_entry *h, | |
9840 | struct bfd_link_info *info, | |
9841 | struct got_entry *gent) | |
9842 | { | |
9843 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9844 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9845 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9846 | ? 16 : 8); | |
9847 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9848 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9849 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9850 | ||
9851 | gent->got.offset = got->size; | |
9852 | got->size += entsize; | |
9853 | ||
19e08130 | 9854 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9855 | { |
33e44f2e | 9856 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9857 | htab->got_reli_size += rentsize; |
927be08e | 9858 | } |
f15d0b54 AM |
9859 | else if (((bfd_link_pic (info) |
9860 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9861 | && bfd_link_executable (info) | |
9862 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9863 | || (htab->elf.dynamic_sections_created |
9864 | && h->dynindx != -1 | |
9865 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9866 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9867 | { |
19e08130 | 9868 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9869 | relgot->size += rentsize; |
927be08e AM |
9870 | } |
9871 | } | |
9872 | ||
7865406b AM |
9873 | /* This function merges got entries in the same toc group. */ |
9874 | ||
9875 | static void | |
9876 | merge_got_entries (struct got_entry **pent) | |
9877 | { | |
9878 | struct got_entry *ent, *ent2; | |
9879 | ||
9880 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9881 | if (!ent->is_indirect) | |
9882 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9883 | if (!ent2->is_indirect | |
9884 | && ent2->addend == ent->addend | |
9885 | && ent2->tls_type == ent->tls_type | |
9886 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9887 | { | |
9888 | ent2->is_indirect = TRUE; | |
9889 | ent2->got.ent = ent; | |
9890 | } | |
9891 | } | |
9892 | ||
46434633 | 9893 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9894 | |
9895 | static bfd_boolean | |
46434633 AM |
9896 | ensure_undef_dynamic (struct bfd_link_info *info, |
9897 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9898 | { |
9899 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9900 | ||
9901 | if (htab->dynamic_sections_created | |
46434633 AM |
9902 | && ((info->dynamic_undefined_weak != 0 |
9903 | && h->root.type == bfd_link_hash_undefweak) | |
9904 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9905 | && h->dynindx == -1 |
9906 | && !h->forced_local | |
9907 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9908 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9909 | return TRUE; | |
9910 | } | |
9911 | ||
65f38f15 AM |
9912 | /* Allocate space in .plt, .got and associated reloc sections for |
9913 | dynamic relocs. */ | |
5bd4f169 | 9914 | |
b34976b6 | 9915 | static bfd_boolean |
4ce794b7 | 9916 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9917 | { |
65f38f15 AM |
9918 | struct bfd_link_info *info; |
9919 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9920 | asection *s; |
65f38f15 | 9921 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9922 | struct got_entry **pgent, *gent; |
5bd4f169 | 9923 | |
e92d460e | 9924 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9925 | return TRUE; |
5bd4f169 | 9926 | |
65f38f15 AM |
9927 | info = (struct bfd_link_info *) inf; |
9928 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9929 | if (htab == NULL) |
9930 | return FALSE; | |
5bd4f169 | 9931 | |
951fd09b AM |
9932 | eh = (struct ppc_link_hash_entry *) h; |
9933 | /* Run through the TLS GD got entries first if we're changing them | |
9934 | to TPREL. */ | |
37da22e5 | 9935 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
9936 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9937 | if (gent->got.refcount > 0 | |
9938 | && (gent->tls_type & TLS_GD) != 0) | |
9939 | { | |
9940 | /* This was a GD entry that has been converted to TPREL. If | |
9941 | there happens to be a TPREL entry we can use that one. */ | |
9942 | struct got_entry *ent; | |
9943 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9944 | if (ent->got.refcount > 0 | |
9945 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9946 | && ent->addend == gent->addend |
9947 | && ent->owner == gent->owner) | |
951fd09b AM |
9948 | { |
9949 | gent->got.refcount = 0; | |
9950 | break; | |
9951 | } | |
9952 | ||
9953 | /* If not, then we'll be using our own TPREL entry. */ | |
9954 | if (gent->got.refcount != 0) | |
9955 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9956 | } | |
9957 | ||
7865406b AM |
9958 | /* Remove any list entry that won't generate a word in the GOT before |
9959 | we call merge_got_entries. Otherwise we risk merging to empty | |
9960 | entries. */ | |
0b8bcf0d AM |
9961 | pgent = &h->got.glist; |
9962 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9963 | if (gent->got.refcount > 0) |
7865406b AM |
9964 | { |
9965 | if ((gent->tls_type & TLS_LD) != 0 | |
9966 | && !h->def_dynamic) | |
9967 | { | |
9968 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9969 | *pgent = gent->next; | |
9970 | } | |
9971 | else | |
9972 | pgent = &gent->next; | |
9973 | } | |
9974 | else | |
9975 | *pgent = gent->next; | |
9976 | ||
9977 | if (!htab->do_multi_toc) | |
9978 | merge_got_entries (&h->got.glist); | |
9979 | ||
9980 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9981 | if (!gent->is_indirect) | |
411e1bfb | 9982 | { |
46434633 AM |
9983 | /* Make sure this symbol is output as a dynamic symbol. */ |
9984 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9985 | return FALSE; |
65f38f15 | 9986 | |
0c8d6e5c | 9987 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9988 | abort (); |
0ffa91dd | 9989 | |
927be08e | 9990 | allocate_got (h, info, gent); |
411e1bfb | 9991 | } |
65f38f15 | 9992 | |
954b63d4 AM |
9993 | /* If no dynamic sections we can't have dynamic relocs, except for |
9994 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9995 | if (!htab->elf.dynamic_sections_created |
9996 | && h->type != STT_GNU_IFUNC) | |
9997 | eh->dyn_relocs = NULL; | |
9998 | ||
529fe20e AM |
9999 | /* Discard relocs on undefined symbols that must be local. */ |
10000 | else if (h->root.type == bfd_link_hash_undefined | |
10001 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
10002 | eh->dyn_relocs = NULL; | |
10003 | ||
954b63d4 AM |
10004 | /* Also discard relocs on undefined weak syms with non-default |
10005 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 10006 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
10007 | eh->dyn_relocs = NULL; |
10008 | ||
8a2058b5 | 10009 | if (eh->dyn_relocs != NULL) |
65f38f15 | 10010 | { |
8a2058b5 AM |
10011 | struct elf_dyn_relocs *p, **pp; |
10012 | ||
57e7d118 AM |
10013 | /* In the shared -Bsymbolic case, discard space allocated for |
10014 | dynamic pc-relative relocs against symbols which turn out to | |
10015 | be defined in regular objects. For the normal shared case, | |
10016 | discard space for relocs that have become local due to symbol | |
10017 | visibility changes. */ | |
10018 | ||
10019 | if (bfd_link_pic (info)) | |
65f38f15 | 10020 | { |
57e7d118 AM |
10021 | /* Relocs that use pc_count are those that appear on a call |
10022 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
10023 | can be generated via assembly. We want calls to | |
10024 | protected symbols to resolve directly to the function | |
10025 | rather than going via the plt. If people want function | |
10026 | pointer comparisons to work as expected then they should | |
10027 | avoid writing weird assembly. */ | |
10028 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
10029 | { | |
57e7d118 AM |
10030 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
10031 | { | |
10032 | p->count -= p->pc_count; | |
10033 | p->pc_count = 0; | |
10034 | if (p->count == 0) | |
10035 | *pp = p->next; | |
10036 | else | |
10037 | pp = &p->next; | |
10038 | } | |
10039 | } | |
65f38f15 | 10040 | |
954b63d4 | 10041 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 10042 | { |
46434633 AM |
10043 | /* Make sure this symbol is output as a dynamic symbol. */ |
10044 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10045 | return FALSE; |
5bd4f169 | 10046 | } |
65f38f15 | 10047 | } |
529fe20e | 10048 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 10049 | { |
8a2058b5 | 10050 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
10051 | symbols which turn out to need copy relocs or are not |
10052 | dynamic. */ | |
529fe20e AM |
10053 | if (h->dynamic_adjusted |
10054 | && !h->def_regular | |
10055 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 10056 | { |
46434633 AM |
10057 | /* Make sure this symbol is output as a dynamic symbol. */ |
10058 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10059 | return FALSE; |
dfbb6ac9 | 10060 | |
f0158f44 AM |
10061 | if (h->dynindx == -1) |
10062 | eh->dyn_relocs = NULL; | |
10063 | } | |
10064 | else | |
8a2058b5 | 10065 | eh->dyn_relocs = NULL; |
57e7d118 AM |
10066 | } |
10067 | ||
10068 | /* Finally, allocate space. */ | |
10069 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
10070 | { | |
10071 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
10072 | if (eh->elf.type == STT_GNU_IFUNC) | |
10073 | sreloc = htab->elf.irelplt; | |
10074 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 10075 | } |
65f38f15 | 10076 | } |
57e7d118 | 10077 | |
2d7ad24e AM |
10078 | /* We might need a PLT entry when the symbol |
10079 | a) is dynamic, or | |
10080 | b) is an ifunc, or | |
10081 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
10082 | d) has plt16 relocs and we are linking statically. */ | |
10083 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
10084 | || h->type == STT_GNU_IFUNC | |
10085 | || (h->needs_plt && h->dynamic_adjusted) | |
10086 | || (h->needs_plt | |
10087 | && h->def_regular | |
10088 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 10089 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
10090 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
10091 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 10092 | { |
57e7d118 AM |
10093 | struct plt_entry *pent; |
10094 | bfd_boolean doneone = FALSE; | |
10095 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
10096 | if (pent->plt.refcount > 0) | |
10097 | { | |
10098 | if (!htab->elf.dynamic_sections_created | |
10099 | || h->dynindx == -1) | |
10100 | { | |
2d7ad24e AM |
10101 | if (h->type == STT_GNU_IFUNC) |
10102 | { | |
10103 | s = htab->elf.iplt; | |
10104 | pent->plt.offset = s->size; | |
10105 | s->size += PLT_ENTRY_SIZE (htab); | |
10106 | s = htab->elf.irelplt; | |
10107 | } | |
10108 | else | |
10109 | { | |
10110 | s = htab->pltlocal; | |
10111 | pent->plt.offset = s->size; | |
10112 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10113 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
10114 | } | |
57e7d118 AM |
10115 | } |
10116 | else | |
10117 | { | |
10118 | /* If this is the first .plt entry, make room for the special | |
10119 | first entry. */ | |
10120 | s = htab->elf.splt; | |
10121 | if (s->size == 0) | |
10122 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 10123 | |
57e7d118 | 10124 | pent->plt.offset = s->size; |
65f38f15 | 10125 | |
57e7d118 AM |
10126 | /* Make room for this entry. */ |
10127 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 10128 | |
57e7d118 AM |
10129 | /* Make room for the .glink code. */ |
10130 | s = htab->glink; | |
10131 | if (s->size == 0) | |
9e390558 | 10132 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
10133 | if (htab->opd_abi) |
10134 | { | |
10135 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 10136 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
10137 | s->size += 4; |
10138 | s->size += 2*4; | |
10139 | } | |
10140 | else | |
10141 | s->size += 4; | |
65f38f15 | 10142 | |
57e7d118 AM |
10143 | /* We also need to make an entry in the .rela.plt section. */ |
10144 | s = htab->elf.srelplt; | |
10145 | } | |
2d7ad24e AM |
10146 | if (s != NULL) |
10147 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
10148 | doneone = TRUE; |
10149 | } | |
10150 | else | |
10151 | pent->plt.offset = (bfd_vma) -1; | |
10152 | if (!doneone) | |
10153 | { | |
10154 | h->plt.plist = NULL; | |
10155 | h->needs_plt = 0; | |
10156 | } | |
65f38f15 | 10157 | } |
57e7d118 | 10158 | else |
65f38f15 | 10159 | { |
57e7d118 AM |
10160 | h->plt.plist = NULL; |
10161 | h->needs_plt = 0; | |
65f38f15 AM |
10162 | } |
10163 | ||
b34976b6 | 10164 | return TRUE; |
65f38f15 AM |
10165 | } |
10166 | ||
9e390558 AM |
10167 | #define PPC_LO(v) ((v) & 0xffff) |
10168 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10169 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10170 | ||
a345bc8d AM |
10171 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
10172 | to set up space for global entry stubs. These are put in glink, | |
10173 | after the branch table. */ | |
65f38f15 | 10174 | |
b34976b6 | 10175 | static bfd_boolean |
a345bc8d | 10176 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 10177 | { |
a345bc8d AM |
10178 | struct bfd_link_info *info; |
10179 | struct ppc_link_hash_table *htab; | |
10180 | struct plt_entry *pent; | |
9e390558 | 10181 | asection *s, *plt; |
65f38f15 | 10182 | |
a345bc8d AM |
10183 | if (h->root.type == bfd_link_hash_indirect) |
10184 | return TRUE; | |
65f38f15 | 10185 | |
a345bc8d AM |
10186 | if (!h->pointer_equality_needed) |
10187 | return TRUE; | |
65f38f15 | 10188 | |
a345bc8d AM |
10189 | if (h->def_regular) |
10190 | return TRUE; | |
65f38f15 | 10191 | |
a345bc8d AM |
10192 | info = inf; |
10193 | htab = ppc_hash_table (info); | |
10194 | if (htab == NULL) | |
10195 | return FALSE; | |
10196 | ||
9e390558 AM |
10197 | s = htab->global_entry; |
10198 | plt = htab->elf.splt; | |
a345bc8d AM |
10199 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
10200 | if (pent->plt.offset != (bfd_vma) -1 | |
10201 | && pent->addend == 0) | |
10202 | { | |
afe397ea AM |
10203 | /* For ELFv2, if this symbol is not defined in a regular file |
10204 | and we are not generating a shared library or pie, then we | |
10205 | need to define the symbol in the executable on a call stub. | |
10206 | This is to avoid text relocations. */ | |
9e390558 AM |
10207 | bfd_vma off, stub_align, stub_off, stub_size; |
10208 | unsigned int align_power; | |
10209 | ||
10210 | stub_size = 16; | |
10211 | stub_off = s->size; | |
10212 | if (htab->params->plt_stub_align >= 0) | |
10213 | align_power = htab->params->plt_stub_align; | |
10214 | else | |
10215 | align_power = -htab->params->plt_stub_align; | |
10216 | /* Setting section alignment is delayed until we know it is | |
10217 | non-empty. Otherwise the .text output section will be | |
10218 | aligned at least to plt_stub_align even when no global | |
10219 | entry stubs are needed. */ | |
10220 | if (s->alignment_power < align_power) | |
10221 | s->alignment_power = align_power; | |
10222 | stub_align = (bfd_vma) 1 << align_power; | |
10223 | if (htab->params->plt_stub_align >= 0 | |
10224 | || ((((stub_off + stub_size - 1) & -stub_align) | |
10225 | - (stub_off & -stub_align)) | |
10226 | > ((stub_size - 1) & -stub_align))) | |
10227 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
10228 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
10229 | off -= stub_off + s->output_offset + s->output_section->vma; | |
10230 | /* Note that for --plt-stub-align negative we have a possible | |
10231 | dependency between stub offset and size. Break that | |
10232 | dependency by assuming the max stub size when calculating | |
10233 | the stub offset. */ | |
10234 | if (PPC_HA (off) == 0) | |
10235 | stub_size -= 4; | |
8a2058b5 | 10236 | h->root.type = bfd_link_hash_defined; |
afe397ea | 10237 | h->root.u.def.section = s; |
9e390558 AM |
10238 | h->root.u.def.value = stub_off; |
10239 | s->size = stub_off + stub_size; | |
a345bc8d AM |
10240 | break; |
10241 | } | |
10242 | return TRUE; | |
10243 | } | |
10244 | ||
10245 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
10246 | read-only sections. */ | |
10247 | ||
10248 | static bfd_boolean | |
98bbb1b8 | 10249 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 10250 | { |
98bbb1b8 AM |
10251 | asection *sec; |
10252 | ||
a345bc8d AM |
10253 | if (h->root.type == bfd_link_hash_indirect) |
10254 | return TRUE; | |
10255 | ||
98bbb1b8 AM |
10256 | sec = readonly_dynrelocs (h); |
10257 | if (sec != NULL) | |
a345bc8d | 10258 | { |
98bbb1b8 AM |
10259 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
10260 | ||
10261 | info->flags |= DF_TEXTREL; | |
10262 | info->callbacks->minfo | |
c1c8c1ef | 10263 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 10264 | sec->owner, h->root.root.string, sec); |
a345bc8d AM |
10265 | |
10266 | /* Not an error, just cut short the traversal. */ | |
10267 | return FALSE; | |
65f38f15 | 10268 | } |
b34976b6 | 10269 | return TRUE; |
65f38f15 AM |
10270 | } |
10271 | ||
10272 | /* Set the sizes of the dynamic sections. */ | |
10273 | ||
b34976b6 | 10274 | static bfd_boolean |
ee67d69a | 10275 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 10276 | struct bfd_link_info *info) |
65f38f15 AM |
10277 | { |
10278 | struct ppc_link_hash_table *htab; | |
10279 | bfd *dynobj; | |
10280 | asection *s; | |
b34976b6 | 10281 | bfd_boolean relocs; |
65f38f15 | 10282 | bfd *ibfd; |
7865406b | 10283 | struct got_entry *first_tlsld; |
65f38f15 AM |
10284 | |
10285 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10286 | if (htab == NULL) |
10287 | return FALSE; | |
10288 | ||
65f38f15 AM |
10289 | dynobj = htab->elf.dynobj; |
10290 | if (dynobj == NULL) | |
10291 | abort (); | |
10292 | ||
10293 | if (htab->elf.dynamic_sections_created) | |
10294 | { | |
10295 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10296 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10297 | { |
3d4d4302 | 10298 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10299 | if (s == NULL) |
10300 | abort (); | |
eea6121a | 10301 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10302 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10303 | } | |
10304 | } | |
10305 | ||
10306 | /* Set up .got offsets for local syms, and space for local dynamic | |
10307 | relocs. */ | |
c72f2fb2 | 10308 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10309 | { |
411e1bfb AM |
10310 | struct got_entry **lgot_ents; |
10311 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10312 | struct plt_entry **local_plt; |
10313 | struct plt_entry **end_local_plt; | |
f961d9dd | 10314 | unsigned char *lgot_masks; |
65f38f15 AM |
10315 | bfd_size_type locsymcount; |
10316 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10317 | |
0c8d6e5c | 10318 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10319 | continue; |
10320 | ||
10321 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10322 | { | |
19e08130 | 10323 | struct ppc_dyn_relocs *p; |
65f38f15 | 10324 | |
6edfbbad | 10325 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10326 | { |
ec338859 AM |
10327 | if (!bfd_is_abs_section (p->sec) |
10328 | && bfd_is_abs_section (p->sec->output_section)) | |
10329 | { | |
10330 | /* Input section has been discarded, either because | |
10331 | it is a copy of a linkonce section or due to | |
10332 | linker script /DISCARD/, so we'll be discarding | |
10333 | the relocs too. */ | |
10334 | } | |
248866a8 | 10335 | else if (p->count != 0) |
ec338859 | 10336 | { |
19e08130 AM |
10337 | asection *srel = elf_section_data (p->sec)->sreloc; |
10338 | if (p->ifunc) | |
33e44f2e | 10339 | srel = htab->elf.irelplt; |
eea6121a | 10340 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10341 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10342 | info->flags |= DF_TEXTREL; | |
ec338859 | 10343 | } |
65f38f15 AM |
10344 | } |
10345 | } | |
10346 | ||
411e1bfb AM |
10347 | lgot_ents = elf_local_got_ents (ibfd); |
10348 | if (!lgot_ents) | |
65f38f15 AM |
10349 | continue; |
10350 | ||
0ffa91dd | 10351 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10352 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10353 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10354 | local_plt = (struct plt_entry **) end_lgot_ents; |
10355 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10356 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10357 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10358 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10359 | { |
0b8bcf0d | 10360 | struct got_entry **pent, *ent; |
411e1bfb | 10361 | |
0b8bcf0d AM |
10362 | pent = lgot_ents; |
10363 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10364 | if (ent->got.refcount > 0) |
10365 | { | |
e7b938ca | 10366 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10367 | { |
927be08e | 10368 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10369 | *pent = ent->next; |
411e1bfb AM |
10370 | } |
10371 | else | |
10372 | { | |
19e08130 AM |
10373 | unsigned int ent_size = 8; |
10374 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10375 | ||
eea6121a | 10376 | ent->got.offset = s->size; |
e7b938ca | 10377 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10378 | { |
19e08130 AM |
10379 | ent_size *= 2; |
10380 | rel_size *= 2; | |
10381 | } | |
10382 | s->size += ent_size; | |
37da22e5 | 10383 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10384 | { |
33e44f2e | 10385 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10386 | htab->got_reli_size += rel_size; |
10387 | } | |
f15d0b54 AM |
10388 | else if (bfd_link_pic (info) |
10389 | && !((ent->tls_type & TLS_TPREL) != 0 | |
10390 | && bfd_link_executable (info))) | |
19e08130 AM |
10391 | { |
10392 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10393 | srel->size += rel_size; | |
927be08e | 10394 | } |
0b8bcf0d | 10395 | pent = &ent->next; |
411e1bfb AM |
10396 | } |
10397 | } | |
10398 | else | |
0b8bcf0d | 10399 | *pent = ent->next; |
65f38f15 | 10400 | } |
e054468f | 10401 | |
2d7ad24e AM |
10402 | /* Allocate space for plt calls to local syms. */ |
10403 | lgot_masks = (unsigned char *) end_local_plt; | |
10404 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10405 | { |
10406 | struct plt_entry *ent; | |
10407 | ||
10408 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10409 | if (ent->plt.refcount > 0) | |
10410 | { | |
2d7ad24e AM |
10411 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10412 | { | |
10413 | s = htab->elf.iplt; | |
10414 | ent->plt.offset = s->size; | |
10415 | s->size += PLT_ENTRY_SIZE (htab); | |
10416 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10417 | } | |
3e04d765 AM |
10418 | else if (htab->can_convert_all_inline_plt |
10419 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10420 | ent->plt.offset = (bfd_vma) -1; |
10421 | else | |
10422 | { | |
10423 | s = htab->pltlocal; | |
10424 | ent->plt.offset = s->size; | |
10425 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10426 | if (bfd_link_pic (info)) | |
10427 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10428 | } | |
e054468f AM |
10429 | } |
10430 | else | |
10431 | ent->plt.offset = (bfd_vma) -1; | |
10432 | } | |
65f38f15 AM |
10433 | } |
10434 | ||
10435 | /* Allocate global sym .plt and .got entries, and space for global | |
10436 | sym dynamic relocs. */ | |
4ce794b7 | 10437 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10438 | |
0e1862bb | 10439 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10440 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10441 | |
7865406b | 10442 | first_tlsld = NULL; |
c72f2fb2 | 10443 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10444 | { |
7865406b AM |
10445 | struct got_entry *ent; |
10446 | ||
0c8d6e5c | 10447 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10448 | continue; |
10449 | ||
7865406b AM |
10450 | ent = ppc64_tlsld_got (ibfd); |
10451 | if (ent->got.refcount > 0) | |
102890f0 | 10452 | { |
7865406b | 10453 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10454 | { |
7865406b AM |
10455 | ent->is_indirect = TRUE; |
10456 | ent->got.ent = first_tlsld; | |
10457 | } | |
10458 | else | |
10459 | { | |
10460 | if (first_tlsld == NULL) | |
10461 | first_tlsld = ent; | |
10462 | s = ppc64_elf_tdata (ibfd)->got; | |
10463 | ent->got.offset = s->size; | |
10464 | ent->owner = ibfd; | |
10465 | s->size += 16; | |
0e1862bb | 10466 | if (bfd_link_pic (info)) |
7865406b AM |
10467 | { |
10468 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10469 | srel->size += sizeof (Elf64_External_Rela); | |
10470 | } | |
102890f0 AM |
10471 | } |
10472 | } | |
10473 | else | |
7865406b | 10474 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10475 | } |
10476 | ||
65f38f15 AM |
10477 | /* We now have determined the sizes of the various dynamic sections. |
10478 | Allocate memory for them. */ | |
b34976b6 | 10479 | relocs = FALSE; |
65f38f15 AM |
10480 | for (s = dynobj->sections; s != NULL; s = s->next) |
10481 | { | |
10482 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10483 | continue; | |
10484 | ||
4ce794b7 | 10485 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10486 | /* These haven't been allocated yet; don't strip. */ |
10487 | continue; | |
33e44f2e AM |
10488 | else if (s == htab->elf.sgot |
10489 | || s == htab->elf.splt | |
10490 | || s == htab->elf.iplt | |
2d7ad24e | 10491 | || s == htab->pltlocal |
c456f082 | 10492 | || s == htab->glink |
9e390558 | 10493 | || s == htab->global_entry |
5474d94f AM |
10494 | || s == htab->elf.sdynbss |
10495 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10496 | { |
10497 | /* Strip this section if we don't need it; see the | |
10498 | comment below. */ | |
5bd4f169 | 10499 | } |
58d180e8 AM |
10500 | else if (s == htab->glink_eh_frame) |
10501 | { | |
10502 | if (!bfd_is_abs_section (s->output_section)) | |
10503 | /* Not sized yet. */ | |
10504 | continue; | |
10505 | } | |
70cc837d | 10506 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10507 | { |
c456f082 | 10508 | if (s->size != 0) |
5bd4f169 | 10509 | { |
33e44f2e | 10510 | if (s != htab->elf.srelplt) |
b34976b6 | 10511 | relocs = TRUE; |
5bd4f169 AM |
10512 | |
10513 | /* We use the reloc_count field as a counter if we need | |
10514 | to copy relocs into the output file. */ | |
10515 | s->reloc_count = 0; | |
10516 | } | |
10517 | } | |
65f38f15 | 10518 | else |
5bd4f169 AM |
10519 | { |
10520 | /* It's not one of our sections, so don't allocate space. */ | |
10521 | continue; | |
10522 | } | |
10523 | ||
eea6121a | 10524 | if (s->size == 0) |
5bd4f169 | 10525 | { |
c456f082 AM |
10526 | /* If we don't need this section, strip it from the |
10527 | output file. This is mostly to handle .rela.bss and | |
10528 | .rela.plt. We must create both sections in | |
10529 | create_dynamic_sections, because they must be created | |
10530 | before the linker maps input sections to output | |
10531 | sections. The linker does that before | |
10532 | adjust_dynamic_symbol is called, and it is that | |
10533 | function which decides whether anything needs to go | |
10534 | into these sections. */ | |
8423293d | 10535 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10536 | continue; |
10537 | } | |
10538 | ||
06bcf541 AM |
10539 | if (bfd_is_abs_section (s->output_section)) |
10540 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10541 | s->name); | |
10542 | ||
c456f082 | 10543 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10544 | continue; |
10545 | ||
65f38f15 AM |
10546 | /* Allocate memory for the section contents. We use bfd_zalloc |
10547 | here in case unused entries are not reclaimed before the | |
10548 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10549 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10550 | sections instead of garbage. | |
10551 | We also rely on the section contents being zero when writing | |
5474d94f | 10552 | the GOT and .dynrelro. */ |
eea6121a | 10553 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10554 | if (s->contents == NULL) |
b34976b6 | 10555 | return FALSE; |
5bd4f169 AM |
10556 | } |
10557 | ||
c72f2fb2 | 10558 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10559 | { |
0c8d6e5c | 10560 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10561 | continue; |
10562 | ||
e717da7e | 10563 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10564 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10565 | { |
eea6121a | 10566 | if (s->size == 0) |
8423293d | 10567 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10568 | else |
10569 | { | |
eea6121a | 10570 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10571 | if (s->contents == NULL) |
10572 | return FALSE; | |
10573 | } | |
10574 | } | |
10575 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10576 | if (s != NULL) | |
10577 | { | |
eea6121a | 10578 | if (s->size == 0) |
8423293d | 10579 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10580 | else |
10581 | { | |
eea6121a | 10582 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10583 | if (s->contents == NULL) |
10584 | return FALSE; | |
10585 | relocs = TRUE; | |
10586 | s->reloc_count = 0; | |
10587 | } | |
10588 | } | |
10589 | } | |
10590 | ||
e86ce104 | 10591 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10592 | { |
e8910a83 AM |
10593 | bfd_boolean tls_opt; |
10594 | ||
5bd4f169 AM |
10595 | /* Add some entries to the .dynamic section. We fill in the |
10596 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10597 | must add the entries now so that we get the correct size for | |
10598 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10599 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10600 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10601 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10602 | |
0e1862bb | 10603 | if (bfd_link_executable (info)) |
5bd4f169 | 10604 | { |
dc810e39 | 10605 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10606 | return FALSE; |
5bd4f169 AM |
10607 | } |
10608 | ||
33e44f2e | 10609 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10610 | { |
dc810e39 AM |
10611 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10612 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10613 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10614 | || !add_dynamic_entry (DT_JMPREL, 0) |
10615 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10616 | return FALSE; |
5bd4f169 AM |
10617 | } |
10618 | ||
ee67d69a | 10619 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10620 | { |
10621 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10622 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10623 | return FALSE; |
19397422 AM |
10624 | } |
10625 | ||
7c9cf415 | 10626 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10627 | && htab->tls_get_addr_fd != NULL |
10628 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10629 | if (tls_opt || !htab->opd_abi) | |
10630 | { | |
10631 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10632 | return FALSE; | |
10633 | } | |
a7f2871e | 10634 | |
5bd4f169 AM |
10635 | if (relocs) |
10636 | { | |
dc810e39 AM |
10637 | if (!add_dynamic_entry (DT_RELA, 0) |
10638 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10639 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10640 | return FALSE; |
5bd4f169 | 10641 | |
65f38f15 AM |
10642 | /* If any dynamic relocs apply to a read-only section, |
10643 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10644 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10645 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10646 | |
65f38f15 | 10647 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10648 | { |
65f38f15 | 10649 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10650 | return FALSE; |
5bd4f169 | 10651 | } |
5bd4f169 | 10652 | } |
5bd4f169 | 10653 | } |
65f38f15 | 10654 | #undef add_dynamic_entry |
5bd4f169 | 10655 | |
b34976b6 | 10656 | return TRUE; |
5bd4f169 AM |
10657 | } |
10658 | ||
a345bc8d AM |
10659 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10660 | ||
10661 | static bfd_boolean | |
10662 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10663 | { | |
10664 | if (h->plt.plist != NULL | |
10665 | && !h->def_regular | |
10666 | && !h->pointer_equality_needed) | |
10667 | return FALSE; | |
10668 | ||
10669 | return _bfd_elf_hash_symbol (h); | |
10670 | } | |
10671 | ||
721956f4 | 10672 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10673 | |
4ce794b7 AM |
10674 | static inline enum ppc_stub_type |
10675 | ppc_type_of_stub (asection *input_sec, | |
10676 | const Elf_Internal_Rela *rel, | |
10677 | struct ppc_link_hash_entry **hash, | |
e054468f | 10678 | struct plt_entry **plt_ent, |
6911b7dc AM |
10679 | bfd_vma destination, |
10680 | unsigned long local_off) | |
5bd4f169 | 10681 | { |
721956f4 AM |
10682 | struct ppc_link_hash_entry *h = *hash; |
10683 | bfd_vma location; | |
10684 | bfd_vma branch_offset; | |
10685 | bfd_vma max_branch_offset; | |
4ce794b7 | 10686 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10687 | |
721956f4 AM |
10688 | if (h != NULL) |
10689 | { | |
e054468f | 10690 | struct plt_entry *ent; |
7fe2b9a6 | 10691 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10692 | if (h->oh != NULL |
10693 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10694 | { |
10695 | fdh = ppc_follow_link (h->oh); | |
10696 | *hash = fdh; | |
10697 | } | |
8387904d | 10698 | |
e054468f AM |
10699 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10700 | if (ent->addend == rel->r_addend | |
10701 | && ent->plt.offset != (bfd_vma) -1) | |
10702 | { | |
e054468f AM |
10703 | *plt_ent = ent; |
10704 | return ppc_stub_plt_call; | |
10705 | } | |
5bd4f169 | 10706 | |
7fe2b9a6 AM |
10707 | /* Here, we know we don't have a plt entry. If we don't have a |
10708 | either a defined function descriptor or a defined entry symbol | |
10709 | in a regular object file, then it is pointless trying to make | |
10710 | any other type of stub. */ | |
854b41e7 AM |
10711 | if (!is_static_defined (&fdh->elf) |
10712 | && !is_static_defined (&h->elf)) | |
721956f4 | 10713 | return ppc_stub_none; |
5d1634d7 | 10714 | } |
e054468f AM |
10715 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10716 | { | |
10717 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10718 | struct plt_entry **local_plt = (struct plt_entry **) | |
10719 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10720 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10721 | ||
10722 | if (local_plt[r_symndx] != NULL) | |
10723 | { | |
10724 | struct plt_entry *ent; | |
10725 | ||
10726 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10727 | if (ent->addend == rel->r_addend | |
10728 | && ent->plt.offset != (bfd_vma) -1) | |
10729 | { | |
10730 | *plt_ent = ent; | |
10731 | return ppc_stub_plt_call; | |
10732 | } | |
10733 | } | |
10734 | } | |
5d1634d7 | 10735 | |
721956f4 AM |
10736 | /* Determine where the call point is. */ |
10737 | location = (input_sec->output_offset | |
10738 | + input_sec->output_section->vma | |
10739 | + rel->r_offset); | |
5d1634d7 | 10740 | |
721956f4 AM |
10741 | branch_offset = destination - location; |
10742 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10743 | |
721956f4 AM |
10744 | /* Determine if a long branch stub is needed. */ |
10745 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10746 | if (r_type == R_PPC64_REL14 |
10747 | || r_type == R_PPC64_REL14_BRTAKEN | |
10748 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10749 | max_branch_offset = 1 << 15; |
5d1634d7 | 10750 | |
6911b7dc | 10751 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10752 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10753 | is needed later. */ | |
10754 | return ppc_stub_long_branch; | |
5d1634d7 | 10755 | |
721956f4 | 10756 | return ppc_stub_none; |
5d1634d7 AM |
10757 | } |
10758 | ||
794e51c0 AM |
10759 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10760 | to update a plt entry in one thread and have another thread see a | |
10761 | stale zero toc entry. To avoid this we need some sort of acquire | |
10762 | barrier in the call stub. One solution is to make the load of the | |
10763 | toc word seem to appear to depend on the load of the function entry | |
10764 | word. Another solution is to test for r2 being zero, and branch to | |
10765 | the appropriate glink entry if so. | |
10766 | ||
10767 | . fake dep barrier compare | |
71a39c98 AM |
10768 | . ld 12,xxx(2) ld 12,xxx(2) |
10769 | . mtctr 12 mtctr 12 | |
10770 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10771 | . add 2,2,11 cmpldi 2,0 |
10772 | . ld 2,xxx+8(2) bnectr+ | |
10773 | . bctr b <glink_entry> | |
10774 | ||
10775 | The solution involving the compare turns out to be faster, so | |
10776 | that's what we use unless the branch won't reach. */ | |
10777 | ||
10778 | #define ALWAYS_USE_FAKE_DEP 0 | |
10779 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10780 | |
794e51c0 AM |
10781 | static inline unsigned int |
10782 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10783 | struct ppc_stub_hash_entry *stub_entry, | |
10784 | bfd_vma off) | |
10785 | { | |
b9e5796b AM |
10786 | unsigned size = 12; |
10787 | ||
10788 | if (ALWAYS_EMIT_R2SAVE | |
10789 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10790 | size += 4; | |
10791 | if (PPC_HA (off) != 0) | |
794e51c0 | 10792 | size += 4; |
b9e5796b AM |
10793 | if (htab->opd_abi) |
10794 | { | |
10795 | size += 4; | |
e7d1c40c | 10796 | if (htab->params->plt_static_chain) |
b9e5796b | 10797 | size += 4; |
bd4d2eaa AM |
10798 | if (htab->params->plt_thread_safe |
10799 | && htab->elf.dynamic_sections_created | |
10800 | && stub_entry->h != NULL | |
10801 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10802 | size += 8; |
e7d1c40c | 10803 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10804 | size += 4; |
10805 | } | |
794e51c0 AM |
10806 | if (stub_entry->h != NULL |
10807 | && (stub_entry->h == htab->tls_get_addr_fd | |
10808 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10809 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10810 | { |
10811 | size += 7 * 4; | |
10812 | if (ALWAYS_EMIT_R2SAVE | |
10813 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
407aa07c | 10814 | size += 6 * 4; |
f378ab09 | 10815 | } |
794e51c0 AM |
10816 | return size; |
10817 | } | |
10818 | ||
2420fff6 AM |
10819 | /* Depending on the sign of plt_stub_align: |
10820 | If positive, return the padding to align to a 2**plt_stub_align | |
10821 | boundary. | |
10822 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10823 | boundaries if we align, then return the padding needed to do so. */ | |
10824 | ||
794e51c0 AM |
10825 | static inline unsigned int |
10826 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10827 | struct ppc_stub_hash_entry *stub_entry, | |
10828 | bfd_vma plt_off) | |
10829 | { | |
2420fff6 | 10830 | int stub_align; |
794e51c0 | 10831 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10832 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10833 | |
2420fff6 AM |
10834 | if (htab->params->plt_stub_align >= 0) |
10835 | { | |
10836 | stub_align = 1 << htab->params->plt_stub_align; | |
10837 | if ((stub_off & (stub_align - 1)) != 0) | |
10838 | return stub_align - (stub_off & (stub_align - 1)); | |
10839 | return 0; | |
10840 | } | |
10841 | ||
10842 | stub_align = 1 << -htab->params->plt_stub_align; | |
794e51c0 | 10843 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10844 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10845 | return stub_align - (stub_off & (stub_align - 1)); |
10846 | return 0; | |
10847 | } | |
10848 | ||
10849 | /* Build a .plt call stub. */ | |
10850 | ||
10851 | static inline bfd_byte * | |
10852 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10853 | struct ppc_stub_hash_entry *stub_entry, | |
10854 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10855 | { | |
e7d1c40c | 10856 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10857 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10858 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10859 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10860 | && htab->elf.dynamic_sections_created | |
10861 | && stub_entry->h != NULL | |
10862 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10863 | bfd_boolean use_fake_dep = plt_thread_safe; |
10864 | bfd_vma cmp_branch_off = 0; | |
10865 | ||
10866 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10867 | && plt_load_toc |
794e51c0 | 10868 | && plt_thread_safe |
bd4d2eaa AM |
10869 | && !((stub_entry->h == htab->tls_get_addr_fd |
10870 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10871 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10872 | { |
10873 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10874 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10875 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10876 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10877 | bfd_vma to, from; |
10878 | ||
68d62958 AM |
10879 | if (pltindex > 32768) |
10880 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10881 | to = (glinkoff |
10882 | + htab->glink->output_offset | |
10883 | + htab->glink->output_section->vma); | |
6f20ed8a | 10884 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10885 | + 4 * (ALWAYS_EMIT_R2SAVE |
10886 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10887 | + 4 * (PPC_HA (offset) != 0) | |
10888 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10889 | != PPC_HA (offset)) | |
10890 | + 4 * (plt_static_chain != 0) | |
10891 | + 20 | |
6f20ed8a AM |
10892 | + stub_entry->group->stub_sec->output_offset |
10893 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10894 | cmp_branch_off = to - from; |
10895 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10896 | } | |
10897 | ||
ac2df442 AM |
10898 | if (PPC_HA (offset) != 0) |
10899 | { | |
176a0d42 AM |
10900 | if (r != NULL) |
10901 | { | |
794e51c0 AM |
10902 | if (ALWAYS_EMIT_R2SAVE |
10903 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10904 | r[0].r_offset += 4; | |
176a0d42 | 10905 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10906 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10907 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10908 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10909 | if (plt_load_toc) |
176a0d42 | 10910 | { |
b9e5796b | 10911 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10912 | { |
b9e5796b AM |
10913 | r[2].r_offset = r[1].r_offset + 4; |
10914 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10915 | r[2].r_addend = r[0].r_addend; | |
10916 | } | |
10917 | else | |
10918 | { | |
10919 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10920 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10921 | r[2].r_addend = r[0].r_addend + 8; | |
10922 | if (plt_static_chain) | |
10923 | { | |
10924 | r[3].r_offset = r[2].r_offset + 4; | |
10925 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10926 | r[3].r_addend = r[0].r_addend + 16; | |
10927 | } | |
c7131b65 | 10928 | } |
176a0d42 AM |
10929 | } |
10930 | } | |
794e51c0 AM |
10931 | if (ALWAYS_EMIT_R2SAVE |
10932 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10933 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10934 | if (plt_load_toc) |
10935 | { | |
10936 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10937 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10938 | } | |
10939 | else | |
10940 | { | |
10941 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10942 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10943 | } | |
b9e5796b AM |
10944 | if (plt_load_toc |
10945 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10946 | { |
71a39c98 | 10947 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10948 | offset = 0; |
10949 | } | |
71a39c98 | 10950 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10951 | if (plt_load_toc) |
794e51c0 | 10952 | { |
b9e5796b AM |
10953 | if (use_fake_dep) |
10954 | { | |
10955 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10956 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10957 | } | |
10958 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10959 | if (plt_static_chain) | |
10960 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10961 | } |
ac2df442 AM |
10962 | } |
10963 | else | |
10964 | { | |
176a0d42 AM |
10965 | if (r != NULL) |
10966 | { | |
794e51c0 AM |
10967 | if (ALWAYS_EMIT_R2SAVE |
10968 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10969 | r[0].r_offset += 4; | |
176a0d42 | 10970 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10971 | if (plt_load_toc) |
176a0d42 | 10972 | { |
b9e5796b | 10973 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10974 | { |
b9e5796b AM |
10975 | r[1].r_offset = r[0].r_offset + 4; |
10976 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10977 | r[1].r_addend = r[0].r_addend; | |
10978 | } | |
10979 | else | |
10980 | { | |
10981 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10982 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10983 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10984 | if (plt_static_chain) | |
10985 | { | |
10986 | r[2].r_offset = r[1].r_offset + 4; | |
10987 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10988 | r[2].r_addend = r[0].r_addend + 8; | |
10989 | } | |
c7131b65 | 10990 | } |
176a0d42 AM |
10991 | } |
10992 | } | |
794e51c0 AM |
10993 | if (ALWAYS_EMIT_R2SAVE |
10994 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10995 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10996 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10997 | if (plt_load_toc |
10998 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10999 | { |
11000 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11001 | offset = 0; | |
11002 | } | |
71a39c98 | 11003 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11004 | if (plt_load_toc) |
794e51c0 | 11005 | { |
b9e5796b AM |
11006 | if (use_fake_dep) |
11007 | { | |
11008 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11009 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11010 | } | |
11011 | if (plt_static_chain) | |
11012 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11013 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11014 | } |
ac2df442 | 11015 | } |
b9e5796b | 11016 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11017 | { |
11018 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11019 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11020 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11021 | } |
11022 | else | |
407aa07c | 11023 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11024 | return p; |
11025 | } | |
11026 | ||
a7f2871e AM |
11027 | /* Build a special .plt call stub for __tls_get_addr. */ |
11028 | ||
11029 | #define LD_R11_0R3 0xe9630000 | |
11030 | #define LD_R12_0R3 0xe9830000 | |
11031 | #define MR_R0_R3 0x7c601b78 | |
11032 | #define CMPDI_R11_0 0x2c2b0000 | |
11033 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
11034 | #define BEQLR 0x4d820020 | |
11035 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
11036 | #define STD_R11_0R1 0xf9610000 |
11037 | #define BCTRL 0x4e800421 | |
11038 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
11039 | #define MTLR_R11 0x7d6803a6 |
11040 | ||
11041 | static inline bfd_byte * | |
794e51c0 AM |
11042 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11043 | struct ppc_stub_hash_entry *stub_entry, | |
11044 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11045 | { |
e7d1c40c | 11046 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11047 | |
a7f2871e AM |
11048 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
11049 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
11050 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
11051 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
11052 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
11053 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11054 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
11055 | if (r != NULL) |
11056 | r[0].r_offset += 7 * 4; | |
11057 | if (!ALWAYS_EMIT_R2SAVE | |
11058 | && stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
11059 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
11060 | ||
a7f2871e | 11061 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 11062 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11063 | |
11064 | if (r != NULL) | |
f378ab09 | 11065 | r[0].r_offset += 2 * 4; |
794e51c0 | 11066 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 11067 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 11068 | |
a078d95a | 11069 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 11070 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11071 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
11072 | bfd_put_32 (obfd, BLR, p), p += 4; | |
11073 | ||
11074 | return p; | |
11075 | } | |
11076 | ||
176a0d42 AM |
11077 | static Elf_Internal_Rela * |
11078 | get_relocs (asection *sec, int count) | |
11079 | { | |
11080 | Elf_Internal_Rela *relocs; | |
11081 | struct bfd_elf_section_data *elfsec_data; | |
11082 | ||
11083 | elfsec_data = elf_section_data (sec); | |
11084 | relocs = elfsec_data->relocs; | |
11085 | if (relocs == NULL) | |
11086 | { | |
11087 | bfd_size_type relsize; | |
11088 | relsize = sec->reloc_count * sizeof (*relocs); | |
11089 | relocs = bfd_alloc (sec->owner, relsize); | |
11090 | if (relocs == NULL) | |
11091 | return NULL; | |
11092 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11093 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11094 | sizeof (Elf_Internal_Shdr)); | |
11095 | if (elfsec_data->rela.hdr == NULL) | |
11096 | return NULL; | |
11097 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11098 | * sizeof (Elf64_External_Rela)); | |
11099 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11100 | sec->reloc_count = 0; |
11101 | } | |
11102 | relocs += sec->reloc_count; | |
11103 | sec->reloc_count += count; | |
11104 | return relocs; | |
11105 | } | |
11106 | ||
aa374f67 | 11107 | static bfd_vma |
25f53a85 | 11108 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11109 | struct ppc_stub_hash_entry *stub_entry) |
11110 | { | |
25f53a85 | 11111 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11112 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11113 | |
11114 | if (r2off == 0) | |
11115 | { | |
11116 | /* Support linking -R objects. Get the toc pointer from the | |
11117 | opd entry. */ | |
11118 | char buf[8]; | |
b9e5796b AM |
11119 | if (!htab->opd_abi) |
11120 | return r2off; | |
aa374f67 AM |
11121 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11122 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11123 | ||
11124 | if (strcmp (opd->name, ".opd") != 0 | |
11125 | || opd->reloc_count != 0) | |
11126 | { | |
c1c8c1ef | 11127 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%pT'\n"), |
25f53a85 | 11128 | stub_entry->h->elf.root.root.string); |
aa374f67 | 11129 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11130 | return (bfd_vma) -1; |
aa374f67 AM |
11131 | } |
11132 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11133 | return (bfd_vma) -1; |
aa374f67 | 11134 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11135 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11136 | } |
6f20ed8a | 11137 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11138 | return r2off; |
11139 | } | |
11140 | ||
b34976b6 | 11141 | static bfd_boolean |
4ce794b7 | 11142 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11143 | { |
721956f4 AM |
11144 | struct ppc_stub_hash_entry *stub_entry; |
11145 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11146 | struct bfd_link_info *info; |
11147 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
11148 | bfd_byte *loc; |
11149 | bfd_byte *p; | |
ee75fd95 | 11150 | bfd_vma dest, off; |
176a0d42 | 11151 | Elf_Internal_Rela *r; |
e054468f | 11152 | asection *plt; |
5d1634d7 | 11153 | |
721956f4 AM |
11154 | /* Massage our args to the form they really have. */ |
11155 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11156 | info = in_arg; |
5d1634d7 | 11157 | |
5d1634d7 | 11158 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11159 | if (htab == NULL) |
11160 | return FALSE; | |
5d1634d7 | 11161 | |
721956f4 | 11162 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
11163 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
11164 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 11165 | |
4ce794b7 | 11166 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11167 | switch (stub_entry->stub_type) |
5d1634d7 | 11168 | { |
721956f4 | 11169 | case ppc_stub_long_branch: |
ad8e1ba5 | 11170 | case ppc_stub_long_branch_r2off: |
721956f4 | 11171 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
11172 | dest = (stub_entry->target_value |
11173 | + stub_entry->target_section->output_offset | |
11174 | + stub_entry->target_section->output_section->vma); | |
11175 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
11176 | off = dest; | |
5d1634d7 | 11177 | |
721956f4 AM |
11178 | /* And this is where we are coming from. */ |
11179 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
11180 | + stub_entry->group->stub_sec->output_offset |
11181 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 11182 | |
9e390558 | 11183 | p = loc; |
ac2df442 | 11184 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11185 | { |
25f53a85 | 11186 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11187 | |
a7c49797 | 11188 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11189 | { |
11190 | htab->stub_error = TRUE; | |
11191 | return FALSE; | |
11192 | } | |
9e390558 AM |
11193 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11194 | p += 4; | |
ac2df442 AM |
11195 | if (PPC_HA (r2off) != 0) |
11196 | { | |
e7d1c40c | 11197 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11198 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11199 | p += 4; | |
a7c49797 AM |
11200 | } |
11201 | if (PPC_LO (r2off) != 0) | |
11202 | { | |
11203 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11204 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11205 | p += 4; | |
ac2df442 | 11206 | } |
9e390558 | 11207 | off -= p - loc; |
ad8e1ba5 | 11208 | } |
9e390558 AM |
11209 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11210 | p += 4; | |
ad8e1ba5 | 11211 | |
5c3dead3 AM |
11212 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11213 | { | |
cf97bcb0 AM |
11214 | _bfd_error_handler |
11215 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11216 | stub_entry->root.string); |
5c3dead3 AM |
11217 | htab->stub_error = TRUE; |
11218 | return FALSE; | |
11219 | } | |
ee75fd95 AM |
11220 | |
11221 | if (info->emitrelocations) | |
11222 | { | |
6f20ed8a | 11223 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11224 | if (r == NULL) |
11225 | return FALSE; | |
9e390558 | 11226 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
11227 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
11228 | r->r_addend = dest; | |
11229 | if (stub_entry->h != NULL) | |
11230 | { | |
11231 | struct elf_link_hash_entry **hashes; | |
11232 | unsigned long symndx; | |
11233 | struct ppc_link_hash_entry *h; | |
11234 | ||
e7d1c40c | 11235 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
11236 | if (hashes == NULL) |
11237 | { | |
11238 | bfd_size_type hsize; | |
11239 | ||
11240 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 11241 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
11242 | if (hashes == NULL) |
11243 | return FALSE; | |
e7d1c40c | 11244 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
11245 | htab->stub_globals = 1; |
11246 | } | |
11247 | symndx = htab->stub_globals++; | |
11248 | h = stub_entry->h; | |
11249 | hashes[symndx] = &h->elf; | |
11250 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
11251 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 11252 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
11253 | if (h->elf.root.u.def.section != stub_entry->target_section) |
11254 | /* H is an opd symbol. The addend must be zero. */ | |
11255 | r->r_addend = 0; | |
11256 | else | |
11257 | { | |
11258 | off = (h->elf.root.u.def.value | |
11259 | + h->elf.root.u.def.section->output_offset | |
11260 | + h->elf.root.u.def.section->output_section->vma); | |
11261 | r->r_addend -= off; | |
11262 | } | |
11263 | } | |
11264 | } | |
721956f4 | 11265 | break; |
e86ce104 | 11266 | |
721956f4 | 11267 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11268 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11269 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11270 | stub_entry->root.string + 9, | |
b34976b6 | 11271 | FALSE, FALSE); |
721956f4 AM |
11272 | if (br_entry == NULL) |
11273 | { | |
cf97bcb0 AM |
11274 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11275 | stub_entry->root.string); | |
b34976b6 AM |
11276 | htab->stub_error = TRUE; |
11277 | return FALSE; | |
721956f4 AM |
11278 | } |
11279 | ||
176a0d42 AM |
11280 | dest = (stub_entry->target_value |
11281 | + stub_entry->target_section->output_offset | |
11282 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
11283 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
11284 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 11285 | |
176a0d42 | 11286 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 11287 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11288 | |
f94498ff | 11289 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11290 | { |
f94498ff | 11291 | br_entry->iter = 0; |
84f5d08e | 11292 | |
f94498ff | 11293 | if (htab->relbrlt != NULL) |
84f5d08e | 11294 | { |
f94498ff AM |
11295 | /* Create a reloc for the branch lookup table entry. */ |
11296 | Elf_Internal_Rela rela; | |
11297 | bfd_byte *rl; | |
11298 | ||
11299 | rela.r_offset = (br_entry->offset | |
11300 | + htab->brlt->output_offset | |
11301 | + htab->brlt->output_section->vma); | |
11302 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11303 | rela.r_addend = dest; |
f94498ff AM |
11304 | |
11305 | rl = htab->relbrlt->contents; | |
11306 | rl += (htab->relbrlt->reloc_count++ | |
11307 | * sizeof (Elf64_External_Rela)); | |
11308 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11309 | } | |
11310 | else if (info->emitrelocations) | |
11311 | { | |
176a0d42 AM |
11312 | r = get_relocs (htab->brlt, 1); |
11313 | if (r == NULL) | |
11314 | return FALSE; | |
11315 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11316 | normal reloc processing. Symbols and offsets are not | |
11317 | translated from input file to output file form, so | |
11318 | set up the offset per the output file. */ | |
f94498ff AM |
11319 | r->r_offset = (br_entry->offset |
11320 | + htab->brlt->output_offset | |
11321 | + htab->brlt->output_section->vma); | |
11322 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11323 | r->r_addend = dest; |
84f5d08e | 11324 | } |
84f5d08e | 11325 | } |
721956f4 | 11326 | |
176a0d42 AM |
11327 | dest = (br_entry->offset |
11328 | + htab->brlt->output_offset | |
11329 | + htab->brlt->output_section->vma); | |
11330 | ||
11331 | off = (dest | |
06bcf541 | 11332 | - elf_gp (info->output_bfd) |
6f20ed8a | 11333 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11334 | |
ad8e1ba5 | 11335 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11336 | { |
25f53a85 | 11337 | info->callbacks->einfo |
c1c8c1ef | 11338 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11339 | stub_entry->root.string); |
5d1634d7 | 11340 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11341 | htab->stub_error = TRUE; |
11342 | return FALSE; | |
5d1634d7 | 11343 | } |
41bd81ab | 11344 | |
176a0d42 AM |
11345 | if (info->emitrelocations) |
11346 | { | |
6f20ed8a | 11347 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11348 | if (r == NULL) |
11349 | return FALSE; | |
6f20ed8a | 11350 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11351 | if (bfd_big_endian (info->output_bfd)) |
11352 | r[0].r_offset += 2; | |
00f412ee | 11353 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11354 | r[0].r_offset += 4; |
11355 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11356 | r[0].r_addend = dest; | |
11357 | if (PPC_HA (off) != 0) | |
11358 | { | |
11359 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11360 | r[1].r_offset = r[0].r_offset + 4; | |
11361 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11362 | r[1].r_addend = r[0].r_addend; | |
11363 | } | |
11364 | } | |
11365 | ||
9e390558 | 11366 | p = loc; |
00f412ee | 11367 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11368 | { |
176a0d42 | 11369 | if (PPC_HA (off) != 0) |
ac2df442 | 11370 | { |
e7d1c40c | 11371 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11372 | ADDIS_R12_R2 | PPC_HA (off), p); |
11373 | p += 4; | |
e7d1c40c | 11374 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11375 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11376 | } |
11377 | else | |
9e390558 AM |
11378 | bfd_put_32 (htab->params->stub_bfd, |
11379 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11380 | } |
11381 | else | |
11382 | { | |
25f53a85 | 11383 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11384 | |
a7c49797 | 11385 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11386 | { |
11387 | htab->stub_error = TRUE; | |
11388 | return FALSE; | |
11389 | } | |
ad8e1ba5 | 11390 | |
9e390558 AM |
11391 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11392 | p += 4; | |
176a0d42 | 11393 | if (PPC_HA (off) != 0) |
ac2df442 | 11394 | { |
e7d1c40c | 11395 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11396 | ADDIS_R12_R2 | PPC_HA (off), p); |
11397 | p += 4; | |
e7d1c40c | 11398 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11399 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11400 | } |
11401 | else | |
9e390558 | 11402 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11403 | |
11404 | if (PPC_HA (r2off) != 0) | |
11405 | { | |
9e390558 | 11406 | p += 4; |
e7d1c40c | 11407 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11408 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11409 | } |
11410 | if (PPC_LO (r2off) != 0) | |
11411 | { | |
9e390558 | 11412 | p += 4; |
e7d1c40c | 11413 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11414 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11415 | } |
ad8e1ba5 | 11416 | } |
9e390558 AM |
11417 | p += 4; |
11418 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11419 | p += 4; | |
407aa07c AM |
11420 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11421 | p += 4; | |
721956f4 | 11422 | break; |
5d1634d7 | 11423 | |
721956f4 | 11424 | case ppc_stub_plt_call: |
794e51c0 | 11425 | case ppc_stub_plt_call_r2save: |
e054468f | 11426 | if (stub_entry->h != NULL |
b31867b6 AM |
11427 | && stub_entry->h->is_func_descriptor |
11428 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11429 | { |
b31867b6 AM |
11430 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11431 | ||
11432 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11433 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11434 | if (fh->elf.root.type == bfd_link_hash_undefined |
11435 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11436 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11437 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11438 | } |
11439 | ||
721956f4 | 11440 | /* Now build the stub. */ |
e054468f | 11441 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 11442 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
11443 | abort (); |
11444 | ||
33e44f2e | 11445 | plt = htab->elf.splt; |
25f23106 AM |
11446 | if (!htab->elf.dynamic_sections_created |
11447 | || stub_entry->h == NULL | |
11448 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11449 | { |
11450 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11451 | plt = htab->elf.iplt; | |
11452 | else | |
11453 | plt = htab->pltlocal; | |
11454 | } | |
e054468f AM |
11455 | |
11456 | dest += plt->output_offset + plt->output_section->vma; | |
11457 | ||
176a0d42 | 11458 | off = (dest |
06bcf541 | 11459 | - elf_gp (info->output_bfd) |
6f20ed8a | 11460 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11461 | |
ad8e1ba5 | 11462 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11463 | { |
25f53a85 | 11464 | info->callbacks->einfo |
695344c0 | 11465 | /* xgettext:c-format */ |
c1c8c1ef | 11466 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11467 | stub_entry->h != NULL |
11468 | ? stub_entry->h->elf.root.root.string | |
11469 | : "<local sym>"); | |
721956f4 | 11470 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11471 | htab->stub_error = TRUE; |
11472 | return FALSE; | |
721956f4 AM |
11473 | } |
11474 | ||
e7d1c40c | 11475 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
11476 | { |
11477 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11478 | ||
6f20ed8a AM |
11479 | stub_entry->group->stub_sec->size += pad; |
11480 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
11481 | loc += pad; |
11482 | } | |
11483 | ||
176a0d42 AM |
11484 | r = NULL; |
11485 | if (info->emitrelocations) | |
11486 | { | |
6f20ed8a | 11487 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11488 | ((PPC_HA (off) != 0) |
11489 | + (htab->opd_abi | |
e7d1c40c | 11490 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11491 | && PPC_HA (off + 16) == PPC_HA (off)) |
11492 | : 1))); | |
176a0d42 AM |
11493 | if (r == NULL) |
11494 | return FALSE; | |
6f20ed8a | 11495 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11496 | if (bfd_big_endian (info->output_bfd)) |
11497 | r[0].r_offset += 2; | |
176a0d42 AM |
11498 | r[0].r_addend = dest; |
11499 | } | |
a7f2871e AM |
11500 | if (stub_entry->h != NULL |
11501 | && (stub_entry->h == htab->tls_get_addr_fd | |
11502 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11503 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11504 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11505 | else |
794e51c0 | 11506 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11507 | break; |
11508 | ||
a4b6fadd AM |
11509 | case ppc_stub_save_res: |
11510 | return TRUE; | |
11511 | ||
721956f4 AM |
11512 | default: |
11513 | BFD_FAIL (); | |
b34976b6 | 11514 | return FALSE; |
721956f4 AM |
11515 | } |
11516 | ||
9e390558 | 11517 | stub_entry->group->stub_sec->size += p - loc; |
97b639ba | 11518 | |
e7d1c40c | 11519 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11520 | { |
11521 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11522 | size_t len1, len2; |
11523 | char *name; | |
11524 | const char *const stub_str[] = { "long_branch", | |
11525 | "long_branch_r2off", | |
11526 | "plt_branch", | |
11527 | "plt_branch_r2off", | |
794e51c0 | 11528 | "plt_call", |
ee75fd95 AM |
11529 | "plt_call" }; |
11530 | ||
11531 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11532 | len2 = strlen (stub_entry->root.string); | |
11533 | name = bfd_malloc (len1 + len2 + 2); | |
11534 | if (name == NULL) | |
11535 | return FALSE; | |
11536 | memcpy (name, stub_entry->root.string, 9); | |
11537 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11538 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11539 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11540 | if (h == NULL) |
11541 | return FALSE; | |
11542 | if (h->root.type == bfd_link_hash_new) | |
11543 | { | |
11544 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11545 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11546 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11547 | h->ref_regular = 1; |
11548 | h->def_regular = 1; | |
11549 | h->ref_regular_nonweak = 1; | |
11550 | h->forced_local = 1; | |
11551 | h->non_elf = 0; | |
2ec55de3 | 11552 | h->root.linker_def = 1; |
97b639ba AM |
11553 | } |
11554 | } | |
11555 | ||
b34976b6 | 11556 | return TRUE; |
721956f4 AM |
11557 | } |
11558 | ||
11559 | /* As above, but don't actually build the stub. Just bump offset so | |
11560 | we know stub section sizes, and select plt_branch stubs where | |
11561 | long_branch stubs won't do. */ | |
11562 | ||
b34976b6 | 11563 | static bfd_boolean |
4ce794b7 | 11564 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11565 | { |
11566 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11567 | struct bfd_link_info *info; |
721956f4 AM |
11568 | struct ppc_link_hash_table *htab; |
11569 | bfd_vma off; | |
11570 | int size; | |
11571 | ||
11572 | /* Massage our args to the form they really have. */ | |
11573 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11574 | info = in_arg; |
11575 | ||
11576 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11577 | if (htab == NULL) |
11578 | return FALSE; | |
721956f4 | 11579 | |
a4b6fadd AM |
11580 | if (stub_entry->h != NULL |
11581 | && stub_entry->h->save_res | |
11582 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11583 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11584 | { | |
11585 | /* Don't make stubs to out-of-line register save/restore | |
11586 | functions. Instead, emit copies of the functions. */ | |
11587 | stub_entry->group->needs_save_res = 1; | |
11588 | stub_entry->stub_type = ppc_stub_save_res; | |
11589 | return TRUE; | |
11590 | } | |
11591 | ||
794e51c0 AM |
11592 | if (stub_entry->stub_type == ppc_stub_plt_call |
11593 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11594 | { |
e054468f AM |
11595 | asection *plt; |
11596 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11597 | if (off >= (bfd_vma) -2) |
411e1bfb | 11598 | abort (); |
33e44f2e | 11599 | plt = htab->elf.splt; |
25f23106 AM |
11600 | if (!htab->elf.dynamic_sections_created |
11601 | || stub_entry->h == NULL | |
11602 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11603 | { |
11604 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11605 | plt = htab->elf.iplt; | |
11606 | else | |
11607 | plt = htab->pltlocal; | |
11608 | } | |
e054468f AM |
11609 | off += (plt->output_offset |
11610 | + plt->output_section->vma | |
06bcf541 | 11611 | - elf_gp (info->output_bfd) |
6f20ed8a | 11612 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11613 | |
794e51c0 | 11614 | size = plt_stub_size (htab, stub_entry, off); |
d4aaa2a0 AM |
11615 | if (stub_entry->h != NULL |
11616 | && (stub_entry->h == htab->tls_get_addr_fd | |
11617 | || stub_entry->h == htab->tls_get_addr) | |
11618 | && htab->params->tls_get_addr_opt | |
11619 | && (ALWAYS_EMIT_R2SAVE | |
11620 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
11621 | stub_entry->group->tls_get_addr_opt_bctrl | |
11622 | = stub_entry->group->stub_sec->size + size - 5 * 4; | |
11623 | ||
e7d1c40c | 11624 | if (htab->params->plt_stub_align) |
794e51c0 | 11625 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11626 | if (info->emitrelocations) |
11627 | { | |
6f20ed8a | 11628 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11629 | += ((PPC_HA (off) != 0) |
11630 | + (htab->opd_abi | |
e7d1c40c | 11631 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11632 | && PPC_HA (off + 16) == PPC_HA (off)) |
11633 | : 1)); | |
6f20ed8a | 11634 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11635 | } |
721956f4 AM |
11636 | } |
11637 | else | |
11638 | { | |
ad8e1ba5 AM |
11639 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11640 | variants. */ | |
ac2df442 | 11641 | bfd_vma r2off = 0; |
6911b7dc | 11642 | bfd_vma local_off = 0; |
ac2df442 | 11643 | |
721956f4 AM |
11644 | off = (stub_entry->target_value |
11645 | + stub_entry->target_section->output_offset | |
11646 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11647 | off -= (stub_entry->group->stub_sec->size |
11648 | + stub_entry->group->stub_sec->output_offset | |
11649 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11650 | |
ad8e1ba5 AM |
11651 | /* Reset the stub type from the plt variant in case we now |
11652 | can reach with a shorter stub. */ | |
11653 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11654 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11655 | ||
11656 | size = 4; | |
11657 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11658 | { | |
25f53a85 | 11659 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11660 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11661 | { |
11662 | htab->stub_error = TRUE; | |
11663 | return FALSE; | |
11664 | } | |
a7c49797 | 11665 | size = 8; |
ac2df442 | 11666 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11667 | size += 4; |
11668 | if (PPC_LO (r2off) != 0) | |
11669 | size += 4; | |
ac2df442 | 11670 | off -= size - 4; |
ad8e1ba5 AM |
11671 | } |
11672 | ||
6911b7dc AM |
11673 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11674 | ||
6a3858a6 | 11675 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
b9e5796b AM |
11676 | Do the same for -R objects without function descriptors. */ |
11677 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11678 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11679 | && r2off == 0 |
11680 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11681 | { |
11682 | struct ppc_branch_hash_entry *br_entry; | |
11683 | ||
11684 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11685 | stub_entry->root.string + 9, | |
b34976b6 | 11686 | TRUE, FALSE); |
721956f4 AM |
11687 | if (br_entry == NULL) |
11688 | { | |
cf97bcb0 AM |
11689 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11690 | stub_entry->root.string); | |
b34976b6 AM |
11691 | htab->stub_error = TRUE; |
11692 | return FALSE; | |
721956f4 AM |
11693 | } |
11694 | ||
11695 | if (br_entry->iter != htab->stub_iteration) | |
11696 | { | |
11697 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11698 | br_entry->offset = htab->brlt->size; |
11699 | htab->brlt->size += 8; | |
63bc6f6c | 11700 | |
ee75fd95 | 11701 | if (htab->relbrlt != NULL) |
eea6121a | 11702 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11703 | else if (info->emitrelocations) |
11704 | { | |
11705 | htab->brlt->reloc_count += 1; | |
11706 | htab->brlt->flags |= SEC_RELOC; | |
11707 | } | |
721956f4 | 11708 | } |
ad8e1ba5 AM |
11709 | |
11710 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11711 | off = (br_entry->offset |
11712 | + htab->brlt->output_offset | |
11713 | + htab->brlt->output_section->vma | |
06bcf541 | 11714 | - elf_gp (info->output_bfd) |
6f20ed8a | 11715 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11716 | |
176a0d42 AM |
11717 | if (info->emitrelocations) |
11718 | { | |
6f20ed8a AM |
11719 | stub_entry->group->stub_sec->reloc_count |
11720 | += 1 + (PPC_HA (off) != 0); | |
11721 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11722 | } |
11723 | ||
00f412ee | 11724 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11725 | { |
11726 | size = 12; | |
176a0d42 | 11727 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11728 | size = 16; |
11729 | } | |
11730 | else | |
11731 | { | |
00f412ee | 11732 | size = 16; |
176a0d42 | 11733 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11734 | size += 4; |
11735 | ||
11736 | if (PPC_HA (r2off) != 0) | |
11737 | size += 4; | |
00f412ee AM |
11738 | if (PPC_LO (r2off) != 0) |
11739 | size += 4; | |
ac2df442 | 11740 | } |
721956f4 | 11741 | } |
84f5d08e AM |
11742 | else if (info->emitrelocations) |
11743 | { | |
6f20ed8a AM |
11744 | stub_entry->group->stub_sec->reloc_count += 1; |
11745 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11746 | } |
721956f4 AM |
11747 | } |
11748 | ||
6f20ed8a | 11749 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11750 | return TRUE; |
721956f4 AM |
11751 | } |
11752 | ||
11753 | /* Set up various things so that we can make a list of input sections | |
11754 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11755 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11756 | |
11757 | int | |
e7d1c40c | 11758 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11759 | { |
6f20ed8a | 11760 | unsigned int id; |
721956f4 AM |
11761 | bfd_size_type amt; |
11762 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11763 | ||
4dfe6ac6 NC |
11764 | if (htab == NULL) |
11765 | return -1; | |
4c52953f | 11766 | |
7cf7fcc8 | 11767 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
11768 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
11769 | htab->sec_info = bfd_zmalloc (amt); | |
11770 | if (htab->sec_info == NULL) | |
721956f4 AM |
11771 | return -1; |
11772 | ||
3d6f9012 AM |
11773 | /* Set toc_off for com, und, abs and ind sections. */ |
11774 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11775 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11776 | |
721956f4 AM |
11777 | return 1; |
11778 | } | |
11779 | ||
927be08e AM |
11780 | /* Set up for first pass at multitoc partitioning. */ |
11781 | ||
11782 | void | |
11783 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11784 | { | |
11785 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11786 | ||
1c865ab2 | 11787 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11788 | htab->toc_bfd = NULL; |
11789 | htab->toc_first_sec = NULL; | |
11790 | } | |
11791 | ||
e717da7e AM |
11792 | /* The linker repeatedly calls this function for each TOC input section |
11793 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11794 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11795 | |
927be08e | 11796 | bfd_boolean |
4ce794b7 | 11797 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11798 | { |
11799 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11800 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11801 | |
4dfe6ac6 NC |
11802 | if (htab == NULL) |
11803 | return FALSE; | |
11804 | ||
927be08e | 11805 | if (!htab->second_toc_pass) |
4c52953f | 11806 | { |
927be08e | 11807 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11808 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11809 | ||
11810 | if (new_bfd) | |
bf102f86 AM |
11811 | { |
11812 | htab->toc_bfd = isec->owner; | |
11813 | htab->toc_first_sec = isec; | |
11814 | } | |
927be08e | 11815 | |
bf102f86 AM |
11816 | addr = isec->output_offset + isec->output_section->vma; |
11817 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11818 | limit = 0x80008000; |
11819 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11820 | limit = 0x10000; | |
11821 | if (off + isec->size > limit) | |
bf102f86 AM |
11822 | { |
11823 | addr = (htab->toc_first_sec->output_offset | |
11824 | + htab->toc_first_sec->output_section->vma); | |
11825 | htab->toc_curr = addr; | |
a27e685f | 11826 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11827 | } |
99877b66 | 11828 | |
927be08e AM |
11829 | /* toc_curr is the base address of this toc group. Set elf_gp |
11830 | for the input section to be the offset relative to the | |
11831 | output toc base plus 0x8000. Making the input elf_gp an | |
11832 | offset allows us to move the toc as a whole without | |
11833 | recalculating input elf_gp. */ | |
06bcf541 | 11834 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11835 | off += TOC_BASE_OFF; |
11836 | ||
11837 | /* Die if someone uses a linker script that doesn't keep input | |
11838 | file .toc and .got together. */ | |
a4fd3de5 AM |
11839 | if (new_bfd |
11840 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11841 | && elf_gp (isec->owner) != off) |
11842 | return FALSE; | |
11843 | ||
11844 | elf_gp (isec->owner) = off; | |
11845 | return TRUE; | |
4c52953f | 11846 | } |
927be08e AM |
11847 | |
11848 | /* During the second pass toc_first_sec points to the start of | |
11849 | a toc group, and toc_curr is used to track the old elf_gp. | |
11850 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11851 | if (htab->toc_bfd == isec->owner) | |
11852 | return TRUE; | |
11853 | htab->toc_bfd = isec->owner; | |
11854 | ||
11855 | if (htab->toc_first_sec == NULL | |
11856 | || htab->toc_curr != elf_gp (isec->owner)) | |
11857 | { | |
11858 | htab->toc_curr = elf_gp (isec->owner); | |
11859 | htab->toc_first_sec = isec; | |
11860 | } | |
11861 | addr = (htab->toc_first_sec->output_offset | |
11862 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11863 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11864 | elf_gp (isec->owner) = off; |
11865 | ||
11866 | return TRUE; | |
ad8e1ba5 AM |
11867 | } |
11868 | ||
927be08e AM |
11869 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11870 | symbol H. */ | |
11871 | ||
11872 | static bfd_boolean | |
11873 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11874 | { | |
11875 | if (h->root.type == bfd_link_hash_indirect) | |
11876 | return TRUE; | |
11877 | ||
927be08e AM |
11878 | merge_got_entries (&h->got.glist); |
11879 | ||
11880 | return TRUE; | |
11881 | } | |
11882 | ||
11883 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11884 | symbol H. */ | |
11885 | ||
11886 | static bfd_boolean | |
11887 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11888 | { | |
11889 | struct got_entry *gent; | |
11890 | ||
11891 | if (h->root.type == bfd_link_hash_indirect) | |
11892 | return TRUE; | |
11893 | ||
927be08e AM |
11894 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11895 | if (!gent->is_indirect) | |
11896 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11897 | return TRUE; | |
11898 | } | |
11899 | ||
11900 | /* Called on the first multitoc pass after the last call to | |
11901 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11902 | entries. */ | |
11903 | ||
11904 | bfd_boolean | |
11905 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11906 | { |
11907 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11908 | struct bfd *ibfd, *ibfd2; |
11909 | bfd_boolean done_something; | |
11910 | ||
11911 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11912 | |
7865406b AM |
11913 | if (!htab->do_multi_toc) |
11914 | return FALSE; | |
11915 | ||
d0fae19d | 11916 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11917 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11918 | ||
11919 | /* And tlsld_got. */ | |
c72f2fb2 | 11920 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11921 | { |
11922 | struct got_entry *ent, *ent2; | |
11923 | ||
11924 | if (!is_ppc64_elf (ibfd)) | |
11925 | continue; | |
11926 | ||
11927 | ent = ppc64_tlsld_got (ibfd); | |
11928 | if (!ent->is_indirect | |
11929 | && ent->got.offset != (bfd_vma) -1) | |
11930 | { | |
c72f2fb2 | 11931 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11932 | { |
11933 | if (!is_ppc64_elf (ibfd2)) | |
11934 | continue; | |
11935 | ||
11936 | ent2 = ppc64_tlsld_got (ibfd2); | |
11937 | if (!ent2->is_indirect | |
11938 | && ent2->got.offset != (bfd_vma) -1 | |
11939 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11940 | { | |
11941 | ent2->is_indirect = TRUE; | |
11942 | ent2->got.ent = ent; | |
11943 | } | |
11944 | } | |
11945 | } | |
11946 | } | |
11947 | ||
11948 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11949 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11950 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11951 | htab->got_reli_size = 0; |
11952 | ||
c72f2fb2 | 11953 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11954 | { |
11955 | asection *got, *relgot; | |
11956 | ||
11957 | if (!is_ppc64_elf (ibfd)) | |
11958 | continue; | |
11959 | ||
11960 | got = ppc64_elf_tdata (ibfd)->got; | |
11961 | if (got != NULL) | |
11962 | { | |
11963 | got->rawsize = got->size; | |
11964 | got->size = 0; | |
11965 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11966 | relgot->rawsize = relgot->size; | |
11967 | relgot->size = 0; | |
11968 | } | |
11969 | } | |
11970 | ||
11971 | /* Now reallocate the got, local syms first. We don't need to | |
11972 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11973 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11974 | { |
11975 | struct got_entry **lgot_ents; | |
11976 | struct got_entry **end_lgot_ents; | |
11977 | struct plt_entry **local_plt; | |
11978 | struct plt_entry **end_local_plt; | |
f961d9dd | 11979 | unsigned char *lgot_masks; |
927be08e AM |
11980 | bfd_size_type locsymcount; |
11981 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11982 | asection *s; |
927be08e AM |
11983 | |
11984 | if (!is_ppc64_elf (ibfd)) | |
11985 | continue; | |
11986 | ||
11987 | lgot_ents = elf_local_got_ents (ibfd); | |
11988 | if (!lgot_ents) | |
11989 | continue; | |
11990 | ||
11991 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11992 | locsymcount = symtab_hdr->sh_info; | |
11993 | end_lgot_ents = lgot_ents + locsymcount; | |
11994 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11995 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11996 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11997 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11998 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11999 | { | |
12000 | struct got_entry *ent; | |
12001 | ||
12002 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12003 | { |
19e08130 AM |
12004 | unsigned int ent_size = 8; |
12005 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12006 | ||
d0fae19d AM |
12007 | ent->got.offset = s->size; |
12008 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12009 | { |
19e08130 AM |
12010 | ent_size *= 2; |
12011 | rel_size *= 2; | |
12012 | } | |
12013 | s->size += ent_size; | |
37da22e5 | 12014 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12015 | { |
33e44f2e | 12016 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12017 | htab->got_reli_size += rel_size; |
12018 | } | |
6a3858a6 AM |
12019 | else if (bfd_link_pic (info) |
12020 | && !((ent->tls_type & TLS_TPREL) != 0 | |
12021 | && bfd_link_executable (info))) | |
19e08130 AM |
12022 | { |
12023 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12024 | srel->size += rel_size; | |
d0fae19d AM |
12025 | } |
12026 | } | |
927be08e AM |
12027 | } |
12028 | } | |
12029 | ||
12030 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12031 | ||
c72f2fb2 | 12032 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12033 | { |
12034 | struct got_entry *ent; | |
12035 | ||
12036 | if (!is_ppc64_elf (ibfd)) | |
12037 | continue; | |
12038 | ||
12039 | ent = ppc64_tlsld_got (ibfd); | |
12040 | if (!ent->is_indirect | |
12041 | && ent->got.offset != (bfd_vma) -1) | |
12042 | { | |
12043 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12044 | ent->got.offset = s->size; | |
12045 | s->size += 16; | |
0e1862bb | 12046 | if (bfd_link_pic (info)) |
927be08e AM |
12047 | { |
12048 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12049 | srel->size += sizeof (Elf64_External_Rela); | |
12050 | } | |
12051 | } | |
12052 | } | |
12053 | ||
33e44f2e | 12054 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12055 | if (!done_something) |
c72f2fb2 | 12056 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12057 | { |
12058 | asection *got; | |
12059 | ||
12060 | if (!is_ppc64_elf (ibfd)) | |
12061 | continue; | |
12062 | ||
12063 | got = ppc64_elf_tdata (ibfd)->got; | |
12064 | if (got != NULL) | |
12065 | { | |
12066 | done_something = got->rawsize != got->size; | |
12067 | if (done_something) | |
12068 | break; | |
12069 | } | |
12070 | } | |
12071 | ||
12072 | if (done_something) | |
e7d1c40c | 12073 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12074 | |
12075 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12076 | on input sections. */ | |
12077 | htab->toc_bfd = NULL; | |
12078 | htab->toc_first_sec = NULL; | |
12079 | htab->second_toc_pass = TRUE; | |
12080 | return done_something; | |
12081 | } | |
12082 | ||
12083 | /* Called after second pass of multitoc partitioning. */ | |
12084 | ||
12085 | void | |
12086 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12087 | { | |
12088 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12089 | ||
12090 | /* After the second pass, toc_curr tracks the TOC offset used | |
12091 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12092 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12093 | } |
12094 | ||
9b5ecbd0 AM |
12095 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12096 | calls, then there's no need to use toc adjusting stubs when branching | |
12097 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12098 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12099 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12100 | for a stub was detected. If called from the top level, a return of | |
12101 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12102 | |
12103 | static int | |
4ce794b7 | 12104 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12105 | { |
9b5ecbd0 | 12106 | int ret; |
70cc837d AM |
12107 | |
12108 | /* Mark this section as checked. */ | |
12109 | isec->call_check_done = 1; | |
9b5ecbd0 | 12110 | |
772119ce AM |
12111 | /* We know none of our code bearing sections will need toc stubs. */ |
12112 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12113 | return 0; | |
12114 | ||
eea6121a | 12115 | if (isec->size == 0) |
082c50f8 AM |
12116 | return 0; |
12117 | ||
4c52953f AM |
12118 | if (isec->output_section == NULL) |
12119 | return 0; | |
12120 | ||
4c52953f | 12121 | ret = 0; |
70cc837d | 12122 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12123 | { |
70cc837d AM |
12124 | Elf_Internal_Rela *relstart, *rel; |
12125 | Elf_Internal_Sym *local_syms; | |
12126 | struct ppc_link_hash_table *htab; | |
2917689a | 12127 | |
70cc837d AM |
12128 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12129 | info->keep_memory); | |
12130 | if (relstart == NULL) | |
12131 | return -1; | |
90aecf7a | 12132 | |
70cc837d AM |
12133 | /* Look for branches to outside of this section. */ |
12134 | local_syms = NULL; | |
12135 | htab = ppc_hash_table (info); | |
12136 | if (htab == NULL) | |
12137 | return -1; | |
4c52953f | 12138 | |
70cc837d | 12139 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12140 | { |
70cc837d AM |
12141 | enum elf_ppc64_reloc_type r_type; |
12142 | unsigned long r_symndx; | |
12143 | struct elf_link_hash_entry *h; | |
12144 | struct ppc_link_hash_entry *eh; | |
12145 | Elf_Internal_Sym *sym; | |
12146 | asection *sym_sec; | |
12147 | struct _opd_sec_data *opd; | |
12148 | bfd_vma sym_value; | |
12149 | bfd_vma dest; | |
12150 | ||
12151 | r_type = ELF64_R_TYPE (rel->r_info); | |
12152 | if (r_type != R_PPC64_REL24 | |
12153 | && r_type != R_PPC64_REL14 | |
12154 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d AM |
12155 | && r_type != R_PPC64_REL14_BRNTAKEN |
12156 | && r_type != R_PPC64_PLTCALL) | |
70cc837d | 12157 | continue; |
4c52953f | 12158 | |
70cc837d AM |
12159 | r_symndx = ELF64_R_SYM (rel->r_info); |
12160 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12161 | isec->owner)) | |
4c52953f | 12162 | { |
70cc837d AM |
12163 | ret = -1; |
12164 | break; | |
12165 | } | |
4c52953f | 12166 | |
70cc837d AM |
12167 | /* Calls to dynamic lib functions go through a plt call stub |
12168 | that uses r2. */ | |
12169 | eh = (struct ppc_link_hash_entry *) h; | |
12170 | if (eh != NULL | |
12171 | && (eh->elf.plt.plist != NULL | |
12172 | || (eh->oh != NULL | |
12173 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12174 | { | |
12175 | ret = 1; | |
12176 | break; | |
4c52953f AM |
12177 | } |
12178 | ||
70cc837d AM |
12179 | if (sym_sec == NULL) |
12180 | /* Ignore other undefined symbols. */ | |
4c52953f | 12181 | continue; |
4c52953f | 12182 | |
70cc837d AM |
12183 | /* Assume branches to other sections not included in the |
12184 | link need stubs too, to cover -R and absolute syms. */ | |
12185 | if (sym_sec->output_section == NULL) | |
12186 | { | |
12187 | ret = 1; | |
12188 | break; | |
12189 | } | |
4c52953f | 12190 | |
70cc837d AM |
12191 | if (h == NULL) |
12192 | sym_value = sym->st_value; | |
12193 | else | |
12194 | { | |
12195 | if (h->root.type != bfd_link_hash_defined | |
12196 | && h->root.type != bfd_link_hash_defweak) | |
12197 | abort (); | |
12198 | sym_value = h->root.u.def.value; | |
12199 | } | |
12200 | sym_value += rel->r_addend; | |
4c52953f | 12201 | |
70cc837d AM |
12202 | /* If this branch reloc uses an opd sym, find the code section. */ |
12203 | opd = get_opd_info (sym_sec); | |
12204 | if (opd != NULL) | |
12205 | { | |
12206 | if (h == NULL && opd->adjust != NULL) | |
12207 | { | |
12208 | long adjust; | |
4c52953f | 12209 | |
92a9c616 | 12210 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12211 | if (adjust == -1) |
12212 | /* Assume deleted functions won't ever be called. */ | |
12213 | continue; | |
12214 | sym_value += adjust; | |
12215 | } | |
4c52953f | 12216 | |
aef36ac1 AM |
12217 | dest = opd_entry_value (sym_sec, sym_value, |
12218 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12219 | if (dest == (bfd_vma) -1) |
12220 | continue; | |
12221 | } | |
12222 | else | |
12223 | dest = (sym_value | |
12224 | + sym_sec->output_offset | |
12225 | + sym_sec->output_section->vma); | |
4c52953f | 12226 | |
70cc837d AM |
12227 | /* Ignore branch to self. */ |
12228 | if (sym_sec == isec) | |
12229 | continue; | |
4c52953f | 12230 | |
70cc837d AM |
12231 | /* If the called function uses the toc, we need a stub. */ |
12232 | if (sym_sec->has_toc_reloc | |
12233 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12234 | { |
70cc837d | 12235 | ret = 1; |
4c52953f AM |
12236 | break; |
12237 | } | |
70cc837d AM |
12238 | |
12239 | /* Assume any branch that needs a long branch stub might in fact | |
12240 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12241 | else if (dest - (isec->output_offset | |
12242 | + isec->output_section->vma | |
6911b7dc AM |
12243 | + rel->r_offset) + (1 << 25) |
12244 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12245 | ? h->other | |
12246 | : sym->st_other)) | |
4c52953f | 12247 | { |
70cc837d AM |
12248 | ret = 1; |
12249 | break; | |
12250 | } | |
12251 | ||
12252 | /* If calling back to a section in the process of being | |
12253 | tested, we can't say for sure that no toc adjusting stubs | |
12254 | are needed, so don't return zero. */ | |
12255 | else if (sym_sec->call_check_in_progress) | |
12256 | ret = 2; | |
12257 | ||
12258 | /* Branches to another section that itself doesn't have any TOC | |
12259 | references are OK. Recursively call ourselves to check. */ | |
12260 | else if (!sym_sec->call_check_done) | |
12261 | { | |
12262 | int recur; | |
12263 | ||
12264 | /* Mark current section as indeterminate, so that other | |
12265 | sections that call back to current won't be marked as | |
12266 | known. */ | |
12267 | isec->call_check_in_progress = 1; | |
12268 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12269 | isec->call_check_in_progress = 0; | |
12270 | ||
4c52953f AM |
12271 | if (recur != 0) |
12272 | { | |
70cc837d AM |
12273 | ret = recur; |
12274 | if (recur != 2) | |
12275 | break; | |
4c52953f AM |
12276 | } |
12277 | } | |
4c52953f | 12278 | } |
70cc837d AM |
12279 | |
12280 | if (local_syms != NULL | |
12281 | && (elf_symtab_hdr (isec->owner).contents | |
12282 | != (unsigned char *) local_syms)) | |
12283 | free (local_syms); | |
12284 | if (elf_section_data (isec)->relocs != relstart) | |
12285 | free (relstart); | |
9b5ecbd0 AM |
12286 | } |
12287 | ||
70cc837d AM |
12288 | if ((ret & 1) == 0 |
12289 | && isec->map_head.s != NULL | |
12290 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12291 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12292 | { | |
12293 | if (isec->map_head.s->has_toc_reloc | |
12294 | || isec->map_head.s->makes_toc_func_call) | |
12295 | ret = 1; | |
12296 | else if (!isec->map_head.s->call_check_done) | |
12297 | { | |
12298 | int recur; | |
12299 | isec->call_check_in_progress = 1; | |
12300 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12301 | isec->call_check_in_progress = 0; | |
12302 | if (recur != 0) | |
12303 | ret = recur; | |
12304 | } | |
12305 | } | |
12306 | ||
12307 | if (ret == 1) | |
12308 | isec->makes_toc_func_call = 1; | |
4c52953f | 12309 | |
9b5ecbd0 AM |
12310 | return ret; |
12311 | } | |
12312 | ||
721956f4 AM |
12313 | /* The linker repeatedly calls this function for each input section, |
12314 | in the order that input sections are linked into output sections. | |
12315 | Build lists of input sections to determine groupings between which | |
12316 | we may insert linker stubs. */ | |
12317 | ||
9b5ecbd0 | 12318 | bfd_boolean |
4ce794b7 | 12319 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12320 | { |
12321 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12322 | ||
4dfe6ac6 NC |
12323 | if (htab == NULL) |
12324 | return FALSE; | |
12325 | ||
734b6cf9 | 12326 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12327 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12328 | { |
3d6f9012 AM |
12329 | /* This happens to make the list in reverse order, |
12330 | which is what we want. */ | |
6f20ed8a AM |
12331 | htab->sec_info[isec->id].u.list |
12332 | = htab->sec_info[isec->output_section->id].u.list; | |
12333 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12334 | } |
ad8e1ba5 | 12335 | |
4c52953f | 12336 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12337 | { |
8b974ba3 AM |
12338 | /* Analyse sections that aren't already flagged as needing a |
12339 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12340 | .fixup contains branches, but only back to the function that | |
12341 | hit an exception. */ | |
12342 | if (!(isec->has_toc_reloc | |
12343 | || (isec->flags & SEC_CODE) == 0 | |
12344 | || strcmp (isec->name, ".fixup") == 0 | |
12345 | || isec->call_check_done)) | |
12346 | { | |
12347 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12348 | return FALSE; |
8b974ba3 AM |
12349 | } |
12350 | /* Make all sections use the TOC assigned for this object file. | |
12351 | This will be wrong for pasted sections; We fix that in | |
12352 | check_pasted_section(). */ | |
12353 | if (elf_gp (isec->owner) != 0) | |
12354 | htab->toc_curr = elf_gp (isec->owner); | |
12355 | } | |
12356 | ||
6f20ed8a | 12357 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12358 | return TRUE; |
721956f4 AM |
12359 | } |
12360 | ||
70cc837d AM |
12361 | /* Check that all .init and .fini sections use the same toc, if they |
12362 | have toc relocs. */ | |
12363 | ||
12364 | static bfd_boolean | |
12365 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12366 | { | |
12367 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12368 | ||
12369 | if (o != NULL) | |
12370 | { | |
12371 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12372 | bfd_vma toc_off = 0; | |
12373 | asection *i; | |
12374 | ||
12375 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12376 | if (i->has_toc_reloc) | |
12377 | { | |
12378 | if (toc_off == 0) | |
6f20ed8a AM |
12379 | toc_off = htab->sec_info[i->id].toc_off; |
12380 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12381 | return FALSE; |
12382 | } | |
6683a28d AM |
12383 | |
12384 | if (toc_off == 0) | |
12385 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12386 | if (i->makes_toc_func_call) | |
12387 | { | |
6f20ed8a | 12388 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12389 | break; |
12390 | } | |
12391 | ||
70cc837d AM |
12392 | /* Make sure the whole pasted function uses the same toc offset. */ |
12393 | if (toc_off != 0) | |
12394 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12395 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12396 | } |
12397 | return TRUE; | |
12398 | } | |
12399 | ||
12400 | bfd_boolean | |
12401 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12402 | { | |
12403 | return (check_pasted_section (info, ".init") | |
12404 | & check_pasted_section (info, ".fini")); | |
12405 | } | |
12406 | ||
721956f4 AM |
12407 | /* See whether we can group stub sections together. Grouping stub |
12408 | sections may result in fewer stubs. More importantly, we need to | |
12409 | put all .init* and .fini* stubs at the beginning of the .init or | |
12410 | .fini output sections respectively, because glibc splits the | |
12411 | _init and _fini functions into multiple parts. Putting a stub in | |
12412 | the middle of a function is not a good idea. */ | |
12413 | ||
6f20ed8a AM |
12414 | static bfd_boolean |
12415 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12416 | bfd_size_type stub_group_size, |
12417 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12418 | { |
6f20ed8a AM |
12419 | struct ppc_link_hash_table *htab; |
12420 | asection *osec; | |
7c8fe5c4 AM |
12421 | bfd_boolean suppress_size_errors; |
12422 | ||
6f20ed8a AM |
12423 | htab = ppc_hash_table (info); |
12424 | if (htab == NULL) | |
12425 | return FALSE; | |
12426 | ||
7c8fe5c4 | 12427 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12428 | if (stub_group_size == 1) |
12429 | { | |
12430 | /* Default values. */ | |
12431 | if (stubs_always_before_branch) | |
09f92717 | 12432 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12433 | else |
09f92717 | 12434 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12435 | suppress_size_errors = TRUE; |
12436 | } | |
12437 | ||
6f20ed8a | 12438 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12439 | { |
6f20ed8a AM |
12440 | asection *tail; |
12441 | ||
12442 | if (osec->id >= htab->sec_info_arr_size) | |
12443 | continue; | |
12444 | ||
12445 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12446 | while (tail != NULL) |
721956f4 | 12447 | { |
734b6cf9 AM |
12448 | asection *curr; |
12449 | asection *prev; | |
12450 | bfd_size_type total; | |
12451 | bfd_boolean big_sec; | |
12452 | bfd_vma curr_toc; | |
6f20ed8a | 12453 | struct map_stub *group; |
09f92717 | 12454 | bfd_size_type group_size; |
734b6cf9 AM |
12455 | |
12456 | curr = tail; | |
eea6121a | 12457 | total = tail->size; |
09f92717 AM |
12458 | group_size = (ppc64_elf_section_data (tail) != NULL |
12459 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12460 | ? stub_group_size >> 10 : stub_group_size); | |
12461 | ||
12462 | big_sec = total > group_size; | |
7c8fe5c4 | 12463 | if (big_sec && !suppress_size_errors) |
695344c0 | 12464 | /* xgettext:c-format */ |
871b3ab2 | 12465 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12466 | tail->owner, tail); |
6f20ed8a | 12467 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12468 | |
6f20ed8a | 12469 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12470 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12471 | < (ppc64_elf_section_data (prev) != NULL |
12472 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12473 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12474 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12475 | curr = prev; |
12476 | ||
12477 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12478 | than group_size and thus can be handled by one stub |
734b6cf9 | 12479 | section. (or the tail section is itself larger than |
09f92717 AM |
12480 | group_size, in which case we may be toast.) We should |
12481 | really be keeping track of the total size of stubs added | |
12482 | here, as stubs contribute to the final output section | |
12483 | size. That's a little tricky, and this way will only | |
12484 | break if stubs added make the total size more than 2^25, | |
12485 | ie. for the default stub_group_size, if stubs total more | |
12486 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12487 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12488 | if (group == NULL) | |
12489 | return FALSE; | |
12490 | group->link_sec = curr; | |
12491 | group->stub_sec = NULL; | |
a4b6fadd | 12492 | group->needs_save_res = 0; |
d4aaa2a0 | 12493 | group->tls_get_addr_opt_bctrl = -1u; |
a4b6fadd AM |
12494 | group->next = htab->group; |
12495 | htab->group = group; | |
734b6cf9 | 12496 | do |
721956f4 | 12497 | { |
6f20ed8a | 12498 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12499 | /* Set up this stub group. */ |
6f20ed8a | 12500 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12501 | } |
734b6cf9 AM |
12502 | while (tail != curr && (tail = prev) != NULL); |
12503 | ||
09f92717 | 12504 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12505 | bytes before the stub section can be handled by it too. |
12506 | Don't do this if we have a really large section after the | |
12507 | stubs, as adding more stubs increases the chance that | |
12508 | branches may not reach into the stub section. */ | |
12509 | if (!stubs_always_before_branch && !big_sec) | |
12510 | { | |
12511 | total = 0; | |
12512 | while (prev != NULL | |
12513 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12514 | < (ppc64_elf_section_data (prev) != NULL |
12515 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12516 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12517 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12518 | { |
12519 | tail = prev; | |
6f20ed8a AM |
12520 | prev = htab->sec_info[tail->id].u.list; |
12521 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12522 | } |
12523 | } | |
12524 | tail = prev; | |
721956f4 AM |
12525 | } |
12526 | } | |
6f20ed8a | 12527 | return TRUE; |
721956f4 AM |
12528 | } |
12529 | ||
58d180e8 AM |
12530 | static const unsigned char glink_eh_frame_cie[] = |
12531 | { | |
12532 | 0, 0, 0, 16, /* length. */ | |
12533 | 0, 0, 0, 0, /* id. */ | |
12534 | 1, /* CIE version. */ | |
12535 | 'z', 'R', 0, /* Augmentation string. */ | |
12536 | 4, /* Code alignment. */ | |
12537 | 0x78, /* Data alignment. */ | |
12538 | 65, /* RA reg. */ | |
12539 | 1, /* Augmentation size. */ | |
12540 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12541 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12542 | }; |
12543 | ||
d4aaa2a0 AM |
12544 | static size_t |
12545 | stub_eh_frame_size (struct map_stub *group, size_t align) | |
12546 | { | |
12547 | size_t this_size = 17; | |
12548 | if (group->tls_get_addr_opt_bctrl != -1u) | |
12549 | { | |
12550 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
12551 | if (to_bctrl < 64) | |
12552 | this_size += 1; | |
12553 | else if (to_bctrl < 256) | |
12554 | this_size += 2; | |
12555 | else if (to_bctrl < 65536) | |
12556 | this_size += 3; | |
12557 | else | |
12558 | this_size += 5; | |
12559 | this_size += 6; | |
12560 | } | |
12561 | this_size = (this_size + align - 1) & -align; | |
12562 | return this_size; | |
12563 | } | |
12564 | ||
d969d15f AM |
12565 | /* Stripping output sections is normally done before dynamic section |
12566 | symbols have been allocated. This function is called later, and | |
12567 | handles cases like htab->brlt which is mapped to its own output | |
12568 | section. */ | |
12569 | ||
12570 | static void | |
12571 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12572 | { | |
12573 | if (isec->size == 0 | |
12574 | && isec->output_section->size == 0 | |
53d8967a | 12575 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12576 | && !bfd_section_removed_from_list (info->output_bfd, |
12577 | isec->output_section) | |
12578 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12579 | { | |
12580 | isec->output_section->flags |= SEC_EXCLUDE; | |
12581 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12582 | info->output_bfd->section_count--; | |
12583 | } | |
12584 | } | |
12585 | ||
721956f4 AM |
12586 | /* Determine and set the size of the stub section for a final link. |
12587 | ||
12588 | The basic idea here is to examine all the relocations looking for | |
12589 | PC-relative calls to a target that is unreachable with a "bl" | |
12590 | instruction. */ | |
12591 | ||
b34976b6 | 12592 | bfd_boolean |
e7d1c40c | 12593 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12594 | { |
12595 | bfd_size_type stub_group_size; | |
b34976b6 | 12596 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12597 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12598 | ||
4dfe6ac6 NC |
12599 | if (htab == NULL) |
12600 | return FALSE; | |
12601 | ||
0e1862bb | 12602 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12603 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12604 | if (!htab->opd_abi) |
e7d1c40c AM |
12605 | htab->params->plt_thread_safe = 0; |
12606 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12607 | { |
e2458743 | 12608 | static const char *const thread_starter[] = |
794e51c0 AM |
12609 | { |
12610 | "pthread_create", | |
12611 | /* libstdc++ */ | |
12612 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12613 | /* librt */ | |
12614 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12615 | "mq_notify", "create_timer", | |
12616 | /* libanl */ | |
12617 | "getaddrinfo_a", | |
12618 | /* libgomp */ | |
2300b5a1 | 12619 | "GOMP_parallel", |
794e51c0 | 12620 | "GOMP_parallel_start", |
2300b5a1 | 12621 | "GOMP_parallel_loop_static", |
794e51c0 | 12622 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12623 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12624 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12625 | "GOMP_parallel_loop_guided", |
794e51c0 | 12626 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12627 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12628 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12629 | "GOMP_parallel_sections", |
68ffbac6 | 12630 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12631 | /* libgo */ |
12632 | "__go_go", | |
794e51c0 AM |
12633 | }; |
12634 | unsigned i; | |
12635 | ||
a4b6fadd | 12636 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12637 | { |
12638 | struct elf_link_hash_entry *h; | |
12639 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12640 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12641 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12642 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12643 | break; |
12644 | } | |
12645 | } | |
e7d1c40c AM |
12646 | stubs_always_before_branch = htab->params->group_size < 0; |
12647 | if (htab->params->group_size < 0) | |
12648 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12649 | else |
e7d1c40c | 12650 | stub_group_size = htab->params->group_size; |
721956f4 | 12651 | |
6f20ed8a AM |
12652 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12653 | return FALSE; | |
721956f4 | 12654 | |
c9301e31 AM |
12655 | #define STUB_SHRINK_ITER 20 |
12656 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12657 | exit on a stub section shrinking. This is to break out of a | |
12658 | pathological case where adding stubs on one iteration decreases | |
12659 | section gaps (perhaps due to alignment), which then requires | |
12660 | fewer or smaller stubs on the next iteration. */ | |
12661 | ||
721956f4 AM |
12662 | while (1) |
12663 | { | |
12664 | bfd *input_bfd; | |
12665 | unsigned int bfd_indx; | |
a4b6fadd | 12666 | struct map_stub *group; |
721956f4 AM |
12667 | |
12668 | htab->stub_iteration += 1; | |
721956f4 AM |
12669 | |
12670 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12671 | input_bfd != NULL; | |
c72f2fb2 | 12672 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12673 | { |
12674 | Elf_Internal_Shdr *symtab_hdr; | |
12675 | asection *section; | |
6cdc0ccc | 12676 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12677 | |
0c8d6e5c | 12678 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12679 | continue; |
12680 | ||
721956f4 | 12681 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12682 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12683 | if (symtab_hdr->sh_info == 0) |
12684 | continue; | |
12685 | ||
721956f4 AM |
12686 | /* Walk over each section attached to the input bfd. */ |
12687 | for (section = input_bfd->sections; | |
12688 | section != NULL; | |
12689 | section = section->next) | |
12690 | { | |
721956f4 | 12691 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12692 | |
12693 | /* If there aren't any relocs, then there's nothing more | |
12694 | to do. */ | |
12695 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12696 | || (section->flags & SEC_ALLOC) == 0 |
12697 | || (section->flags & SEC_LOAD) == 0 | |
12698 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12699 | || section->reloc_count == 0) |
12700 | continue; | |
12701 | ||
12702 | /* If this section is a link-once section that will be | |
12703 | discarded, then don't create any stubs. */ | |
12704 | if (section->output_section == NULL | |
927be08e | 12705 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12706 | continue; |
12707 | ||
1e2f5b6e AM |
12708 | /* Get the relocs. */ |
12709 | internal_relocs | |
4ce794b7 | 12710 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12711 | info->keep_memory); |
721956f4 | 12712 | if (internal_relocs == NULL) |
1e2f5b6e | 12713 | goto error_ret_free_local; |
721956f4 AM |
12714 | |
12715 | /* Now examine each relocation. */ | |
12716 | irela = internal_relocs; | |
12717 | irelaend = irela + section->reloc_count; | |
12718 | for (; irela < irelaend; irela++) | |
12719 | { | |
4ce794b7 AM |
12720 | enum elf_ppc64_reloc_type r_type; |
12721 | unsigned int r_indx; | |
721956f4 AM |
12722 | enum ppc_stub_type stub_type; |
12723 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12724 | asection *sym_sec, *code_sec; |
e054468f | 12725 | bfd_vma sym_value, code_value; |
721956f4 | 12726 | bfd_vma destination; |
6911b7dc | 12727 | unsigned long local_off; |
8843416a | 12728 | bfd_boolean ok_dest; |
721956f4 | 12729 | struct ppc_link_hash_entry *hash; |
8387904d | 12730 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12731 | struct elf_link_hash_entry *h; |
12732 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12733 | char *stub_name; |
12734 | const asection *id_sec; | |
74f0fb50 | 12735 | struct _opd_sec_data *opd; |
e054468f | 12736 | struct plt_entry *plt_ent; |
721956f4 AM |
12737 | |
12738 | r_type = ELF64_R_TYPE (irela->r_info); | |
12739 | r_indx = ELF64_R_SYM (irela->r_info); | |
12740 | ||
4ce794b7 | 12741 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12742 | { |
12743 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12744 | goto error_ret_free_internal; |
721956f4 AM |
12745 | } |
12746 | ||
12747 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12748 | if (r_type != R_PPC64_REL24 |
12749 | && r_type != R_PPC64_REL14 | |
12750 | && r_type != R_PPC64_REL14_BRTAKEN | |
12751 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12752 | continue; |
12753 | ||
12754 | /* Now determine the call target, its name, value, | |
12755 | section. */ | |
411e1bfb AM |
12756 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12757 | r_indx, input_bfd)) | |
12758 | goto error_ret_free_internal; | |
12759 | hash = (struct ppc_link_hash_entry *) h; | |
12760 | ||
8843416a | 12761 | ok_dest = FALSE; |
8387904d | 12762 | fdh = NULL; |
7fe2b9a6 | 12763 | sym_value = 0; |
411e1bfb | 12764 | if (hash == NULL) |
721956f4 | 12765 | { |
411e1bfb | 12766 | sym_value = sym->st_value; |
c27b8c2a AM |
12767 | if (sym_sec != NULL |
12768 | && sym_sec->output_section != NULL) | |
12769 | ok_dest = TRUE; | |
721956f4 | 12770 | } |
7fe2b9a6 AM |
12771 | else if (hash->elf.root.type == bfd_link_hash_defined |
12772 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12773 | { | |
12774 | sym_value = hash->elf.root.u.def.value; | |
12775 | if (sym_sec->output_section != NULL) | |
12776 | ok_dest = TRUE; | |
12777 | } | |
12778 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12779 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12780 | { |
99877b66 | 12781 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12782 | use the func descriptor sym instead if it is |
12783 | defined. */ | |
ceb1f1ef | 12784 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12785 | && hash->oh != NULL) |
8387904d | 12786 | { |
8c5b4e52 | 12787 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12788 | if (fdh->elf.root.type == bfd_link_hash_defined |
12789 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12790 | { | |
12791 | sym_sec = fdh->elf.root.u.def.section; | |
12792 | sym_value = fdh->elf.root.u.def.value; | |
12793 | if (sym_sec->output_section != NULL) | |
12794 | ok_dest = TRUE; | |
12795 | } | |
99877b66 AM |
12796 | else |
12797 | fdh = NULL; | |
8387904d | 12798 | } |
7fe2b9a6 AM |
12799 | } |
12800 | else | |
12801 | { | |
12802 | bfd_set_error (bfd_error_bad_value); | |
12803 | goto error_ret_free_internal; | |
721956f4 AM |
12804 | } |
12805 | ||
8843416a | 12806 | destination = 0; |
6911b7dc | 12807 | local_off = 0; |
8843416a AM |
12808 | if (ok_dest) |
12809 | { | |
12810 | sym_value += irela->r_addend; | |
12811 | destination = (sym_value | |
12812 | + sym_sec->output_offset | |
12813 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12814 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12815 | ? hash->elf.other | |
12816 | : sym->st_other); | |
8843416a AM |
12817 | } |
12818 | ||
8387904d | 12819 | code_sec = sym_sec; |
e054468f | 12820 | code_value = sym_value; |
74f0fb50 AM |
12821 | opd = get_opd_info (sym_sec); |
12822 | if (opd != NULL) | |
8387904d AM |
12823 | { |
12824 | bfd_vma dest; | |
12825 | ||
74f0fb50 | 12826 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12827 | { |
51aecdc5 | 12828 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12829 | if (adjust == -1) |
12830 | continue; | |
e054468f | 12831 | code_value += adjust; |
8387904d AM |
12832 | sym_value += adjust; |
12833 | } | |
12834 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12835 | &code_sec, &code_value, FALSE); |
8387904d AM |
12836 | if (dest != (bfd_vma) -1) |
12837 | { | |
12838 | destination = dest; | |
12839 | if (fdh != NULL) | |
12840 | { | |
12841 | /* Fixup old ABI sym to point at code | |
12842 | entry. */ | |
99877b66 | 12843 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12844 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12845 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12846 | } |
12847 | } | |
12848 | } | |
12849 | ||
721956f4 | 12850 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12851 | plt_ent = NULL; |
721956f4 | 12852 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12853 | &plt_ent, destination, |
12854 | local_off); | |
ad8e1ba5 AM |
12855 | |
12856 | if (stub_type != ppc_stub_plt_call) | |
12857 | { | |
12858 | /* Check whether we need a TOC adjusting stub. | |
12859 | Since the linker pastes together pieces from | |
12860 | different object files when creating the | |
12861 | _init and _fini functions, it may be that a | |
12862 | call to what looks like a local sym is in | |
12863 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12864 | if (code_sec != NULL |
12865 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12866 | && (htab->sec_info[code_sec->id].toc_off |
12867 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12868 | && (code_sec->has_toc_reloc |
12869 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12870 | stub_type = ppc_stub_long_branch_r2off; |
12871 | } | |
12872 | ||
721956f4 AM |
12873 | if (stub_type == ppc_stub_none) |
12874 | continue; | |
12875 | ||
411e1bfb AM |
12876 | /* __tls_get_addr calls might be eliminated. */ |
12877 | if (stub_type != ppc_stub_plt_call | |
12878 | && hash != NULL | |
8387904d AM |
12879 | && (hash == htab->tls_get_addr |
12880 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12881 | && section->has_tls_reloc |
12882 | && irela != internal_relocs) | |
12883 | { | |
12884 | /* Get tls info. */ | |
f961d9dd | 12885 | unsigned char *tls_mask; |
411e1bfb | 12886 | |
3a71aa26 | 12887 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12888 | irela - 1, input_bfd)) |
12889 | goto error_ret_free_internal; | |
37da22e5 | 12890 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
12891 | continue; |
12892 | } | |
12893 | ||
f378ab09 | 12894 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12895 | { |
6e1816be AM |
12896 | if (!htab->opd_abi |
12897 | && htab->params->plt_localentry0 != 0 | |
12898 | && is_elfv2_localentry0 (&hash->elf)) | |
12899 | htab->has_plt_localentry0 = 1; | |
12900 | else if (irela + 1 < irelaend | |
12901 | && irela[1].r_offset == irela->r_offset + 4 | |
12902 | && (ELF64_R_TYPE (irela[1].r_info) | |
12903 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12904 | { |
12905 | if (!tocsave_find (htab, INSERT, | |
12906 | &local_syms, irela + 1, input_bfd)) | |
12907 | goto error_ret_free_internal; | |
12908 | } | |
f378ab09 AM |
12909 | else |
12910 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12911 | } |
3b421ab3 | 12912 | |
721956f4 | 12913 | /* Support for grouping stub sections. */ |
6f20ed8a | 12914 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12915 | |
12916 | /* Get the name of this stub. */ | |
12917 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12918 | if (!stub_name) | |
12919 | goto error_ret_free_internal; | |
12920 | ||
12921 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12922 | stub_name, FALSE, FALSE); |
721956f4 AM |
12923 | if (stub_entry != NULL) |
12924 | { | |
12925 | /* The proper stub has already been created. */ | |
12926 | free (stub_name); | |
794e51c0 AM |
12927 | if (stub_type == ppc_stub_plt_call_r2save) |
12928 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12929 | continue; |
12930 | } | |
12931 | ||
25f53a85 | 12932 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12933 | if (stub_entry == NULL) |
12934 | { | |
12935 | free (stub_name); | |
6cdc0ccc AM |
12936 | error_ret_free_internal: |
12937 | if (elf_section_data (section)->relocs == NULL) | |
12938 | free (internal_relocs); | |
12939 | error_ret_free_local: | |
12940 | if (local_syms != NULL | |
12941 | && (symtab_hdr->contents | |
12942 | != (unsigned char *) local_syms)) | |
12943 | free (local_syms); | |
b34976b6 | 12944 | return FALSE; |
721956f4 AM |
12945 | } |
12946 | ||
ad8e1ba5 | 12947 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12948 | if (stub_type != ppc_stub_plt_call |
12949 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12950 | { |
12951 | stub_entry->target_value = code_value; | |
12952 | stub_entry->target_section = code_sec; | |
12953 | } | |
12954 | else | |
12955 | { | |
12956 | stub_entry->target_value = sym_value; | |
12957 | stub_entry->target_section = sym_sec; | |
12958 | } | |
721956f4 | 12959 | stub_entry->h = hash; |
e054468f | 12960 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
12961 | stub_entry->symtype |
12962 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 12963 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12964 | |
12965 | if (stub_entry->h != NULL) | |
12966 | htab->stub_globals += 1; | |
721956f4 AM |
12967 | } |
12968 | ||
12969 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12970 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12971 | free (internal_relocs); |
721956f4 | 12972 | } |
6cdc0ccc AM |
12973 | |
12974 | if (local_syms != NULL | |
12975 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12976 | { | |
12977 | if (!info->keep_memory) | |
12978 | free (local_syms); | |
12979 | else | |
12980 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12981 | } | |
721956f4 AM |
12982 | } |
12983 | ||
5c3dead3 | 12984 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12985 | stub sections. */ |
d4aaa2a0 AM |
12986 | for (group = htab->group; group != NULL; group = group->next) |
12987 | if (group->stub_sec != NULL) | |
ee75fd95 | 12988 | { |
d4aaa2a0 AM |
12989 | asection *stub_sec = group->stub_sec; |
12990 | ||
ea3d7d1c AM |
12991 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12992 | || stub_sec->rawsize < stub_sec->size) | |
12993 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12994 | stub_sec->rawsize = stub_sec->size; | |
ee75fd95 AM |
12995 | stub_sec->size = 0; |
12996 | stub_sec->reloc_count = 0; | |
84f5d08e | 12997 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12998 | } |
eea6121a | 12999 | |
ba21f564 AM |
13000 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13001 | || htab->brlt->rawsize < htab->brlt->size) | |
13002 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13003 | htab->brlt->size = 0; |
84f5d08e AM |
13004 | htab->brlt->reloc_count = 0; |
13005 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13006 | if (htab->relbrlt != NULL) |
eea6121a | 13007 | htab->relbrlt->size = 0; |
721956f4 | 13008 | |
63bc6f6c | 13009 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13010 | |
a4b6fadd AM |
13011 | for (group = htab->group; group != NULL; group = group->next) |
13012 | if (group->needs_save_res) | |
13013 | group->stub_sec->size += htab->sfpr->size; | |
13014 | ||
176a0d42 AM |
13015 | if (info->emitrelocations |
13016 | && htab->glink != NULL && htab->glink->size != 0) | |
13017 | { | |
13018 | htab->glink->reloc_count = 1; | |
13019 | htab->glink->flags |= SEC_RELOC; | |
13020 | } | |
13021 | ||
58d180e8 AM |
13022 | if (htab->glink_eh_frame != NULL |
13023 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13024 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13025 | { |
2e0ce1c8 | 13026 | size_t size = 0, align = 4; |
58d180e8 | 13027 | |
d4aaa2a0 AM |
13028 | for (group = htab->group; group != NULL; group = group->next) |
13029 | if (group->stub_sec != NULL) | |
13030 | size += stub_eh_frame_size (group, align); | |
58d180e8 | 13031 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13032 | size += (24 + align - 1) & -align; |
58d180e8 | 13033 | if (size != 0) |
2e0ce1c8 AM |
13034 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13035 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13036 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13037 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13038 | htab->glink_eh_frame->size = size; | |
13039 | } | |
13040 | ||
e7d1c40c | 13041 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13042 | for (group = htab->group; group != NULL; group = group->next) |
13043 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13044 | { |
13045 | int align = abs (htab->params->plt_stub_align); | |
13046 | group->stub_sec->size | |
13047 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13048 | } | |
d4aaa2a0 AM |
13049 | |
13050 | for (group = htab->group; group != NULL; group = group->next) | |
13051 | if (group->stub_sec != NULL | |
13052 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13053 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13054 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13055 | break; |
13056 | ||
d4aaa2a0 | 13057 | if (group == NULL |
ba21f564 AM |
13058 | && (htab->brlt->rawsize == htab->brlt->size |
13059 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13060 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
13061 | && (htab->glink_eh_frame == NULL |
13062 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
13063 | break; |
13064 | ||
721956f4 | 13065 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13066 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13067 | } |
13068 | ||
da44f4e5 AM |
13069 | if (htab->glink_eh_frame != NULL |
13070 | && htab->glink_eh_frame->size != 0) | |
13071 | { | |
13072 | bfd_vma val; | |
13073 | bfd_byte *p, *last_fde; | |
13074 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13075 | struct map_stub *group; |
da44f4e5 AM |
13076 | |
13077 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
13078 | if (p == NULL) | |
13079 | return FALSE; | |
13080 | htab->glink_eh_frame->contents = p; | |
13081 | last_fde = p; | |
2e0ce1c8 | 13082 | align = 4; |
da44f4e5 AM |
13083 | |
13084 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13085 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13086 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13087 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13088 | p += last_fde_len + 4; |
da44f4e5 | 13089 | |
d4aaa2a0 AM |
13090 | for (group = htab->group; group != NULL; group = group->next) |
13091 | if (group->stub_sec != NULL) | |
da44f4e5 AM |
13092 | { |
13093 | last_fde = p; | |
d4aaa2a0 | 13094 | last_fde_len = stub_eh_frame_size (group, align) - 4; |
da44f4e5 | 13095 | /* FDE length. */ |
2e0ce1c8 | 13096 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13097 | p += 4; |
13098 | /* CIE pointer. */ | |
13099 | val = p - htab->glink_eh_frame->contents; | |
13100 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13101 | p += 4; | |
13102 | /* Offset to stub section, written later. */ | |
13103 | p += 4; | |
13104 | /* stub section size. */ | |
d4aaa2a0 | 13105 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13106 | p += 4; |
13107 | /* Augmentation. */ | |
13108 | p += 1; | |
d4aaa2a0 AM |
13109 | if (group->tls_get_addr_opt_bctrl != -1u) |
13110 | { | |
13111 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
13112 | ||
13113 | /* This FDE needs more than just the default. | |
13114 | Describe __tls_get_addr_opt stub LR. */ | |
13115 | if (to_bctrl < 64) | |
13116 | *p++ = DW_CFA_advance_loc + to_bctrl; | |
13117 | else if (to_bctrl < 256) | |
13118 | { | |
13119 | *p++ = DW_CFA_advance_loc1; | |
13120 | *p++ = to_bctrl; | |
13121 | } | |
13122 | else if (to_bctrl < 65536) | |
13123 | { | |
13124 | *p++ = DW_CFA_advance_loc2; | |
13125 | bfd_put_16 (htab->elf.dynobj, to_bctrl, p); | |
13126 | p += 2; | |
13127 | } | |
13128 | else | |
13129 | { | |
13130 | *p++ = DW_CFA_advance_loc4; | |
13131 | bfd_put_32 (htab->elf.dynobj, to_bctrl, p); | |
13132 | p += 4; | |
13133 | } | |
13134 | *p++ = DW_CFA_offset_extended_sf; | |
13135 | *p++ = 65; | |
13136 | *p++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
13137 | *p++ = DW_CFA_advance_loc + 4; | |
13138 | *p++ = DW_CFA_restore_extended; | |
13139 | *p++ = 65; | |
13140 | } | |
da44f4e5 | 13141 | /* Pad. */ |
d4aaa2a0 | 13142 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13143 | } |
13144 | if (htab->glink != NULL && htab->glink->size != 0) | |
13145 | { | |
13146 | last_fde = p; | |
2e0ce1c8 | 13147 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13148 | /* FDE length. */ |
2e0ce1c8 | 13149 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13150 | p += 4; |
13151 | /* CIE pointer. */ | |
13152 | val = p - htab->glink_eh_frame->contents; | |
13153 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13154 | p += 4; | |
13155 | /* Offset to .glink, written later. */ | |
13156 | p += 4; | |
13157 | /* .glink size. */ | |
13158 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13159 | p += 4; | |
13160 | /* Augmentation. */ | |
13161 | p += 1; | |
13162 | ||
13163 | *p++ = DW_CFA_advance_loc + 1; | |
13164 | *p++ = DW_CFA_register; | |
13165 | *p++ = 65; | |
9f08fa5c | 13166 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13167 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13168 | *p++ = DW_CFA_restore_extended; |
13169 | *p++ = 65; | |
2e0ce1c8 | 13170 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13171 | } |
13172 | /* Subsume any padding into the last FDE if user .eh_frame | |
13173 | sections are aligned more than glink_eh_frame. Otherwise any | |
13174 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13175 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13176 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13177 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13178 | htab->glink_eh_frame->size = size + pad; |
13179 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13180 | } | |
13181 | ||
d969d15f AM |
13182 | maybe_strip_output (info, htab->brlt); |
13183 | if (htab->glink_eh_frame != NULL) | |
13184 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13185 | |
b34976b6 | 13186 | return TRUE; |
721956f4 AM |
13187 | } |
13188 | ||
13189 | /* Called after we have determined section placement. If sections | |
805fc799 | 13190 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13191 | |
805fc799 | 13192 | bfd_vma |
1c865ab2 | 13193 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13194 | { |
805fc799 | 13195 | asection *s; |
a27e685f | 13196 | bfd_vma TOCstart, adjust; |
721956f4 | 13197 | |
43417696 AM |
13198 | if (info != NULL) |
13199 | { | |
13200 | struct elf_link_hash_entry *h; | |
13201 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13202 | ||
13203 | if (is_elf_hash_table (htab) | |
13204 | && htab->hgot != NULL) | |
13205 | h = htab->hgot; | |
13206 | else | |
13207 | { | |
13208 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13209 | if (is_elf_hash_table (htab)) | |
13210 | htab->hgot = h; | |
13211 | } | |
13212 | if (h != NULL | |
13213 | && h->root.type == bfd_link_hash_defined | |
13214 | && !h->root.linker_def | |
13215 | && (!is_elf_hash_table (htab) | |
13216 | || h->def_regular)) | |
13217 | { | |
13218 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13219 | + h->root.u.def.section->output_offset | |
13220 | + h->root.u.def.section->output_section->vma); | |
13221 | _bfd_set_gp_value (obfd, TOCstart); | |
13222 | return TOCstart; | |
13223 | } | |
13224 | } | |
13225 | ||
805fc799 AM |
13226 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13227 | order. The TOC starts where the first of these sections starts. */ | |
13228 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13229 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13230 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13231 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13232 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13233 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13234 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13235 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13236 | { |
13237 | /* This may happen for | |
13238 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13239 | .toc directive | |
13240 | o bad linker script | |
13241 | o --gc-sections and empty TOC sections | |
13242 | ||
13243 | FIXME: Warn user? */ | |
13244 | ||
13245 | /* Look for a likely section. We probably won't even be | |
13246 | using TOCstart. */ | |
13247 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13248 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13249 | | SEC_EXCLUDE)) | |
805fc799 AM |
13250 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13251 | break; | |
721956f4 | 13252 | if (s == NULL) |
805fc799 | 13253 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13254 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13255 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13256 | break; | |
721956f4 | 13257 | if (s == NULL) |
805fc799 | 13258 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13259 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13260 | == SEC_ALLOC) | |
805fc799 | 13261 | break; |
721956f4 | 13262 | if (s == NULL) |
805fc799 | 13263 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13264 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13265 | break; |
13266 | } | |
721956f4 | 13267 | |
805fc799 AM |
13268 | TOCstart = 0; |
13269 | if (s != NULL) | |
13270 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13271 | |
a27e685f AM |
13272 | /* Force alignment. */ |
13273 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13274 | TOCstart -= adjust; | |
1c865ab2 AM |
13275 | _bfd_set_gp_value (obfd, TOCstart); |
13276 | ||
810d4e75 | 13277 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13278 | { |
13279 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13280 | ||
810d4e75 AM |
13281 | if (htab != NULL) |
13282 | { | |
13283 | if (htab->elf.hgot != NULL) | |
13284 | { | |
a27e685f | 13285 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13286 | htab->elf.hgot->root.u.def.section = s; |
13287 | } | |
13288 | } | |
13289 | else | |
1c865ab2 | 13290 | { |
810d4e75 AM |
13291 | struct bfd_link_hash_entry *bh = NULL; |
13292 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13293 | s, TOC_BASE_OFF - adjust, |
13294 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13295 | } |
13296 | } | |
805fc799 | 13297 | return TOCstart; |
721956f4 AM |
13298 | } |
13299 | ||
a345bc8d | 13300 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13301 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13302 | |
13303 | static bfd_boolean | |
49c09209 | 13304 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13305 | { |
13306 | struct bfd_link_info *info; | |
13307 | struct ppc_link_hash_table *htab; | |
49c09209 | 13308 | struct plt_entry *ent; |
a345bc8d AM |
13309 | asection *s; |
13310 | ||
13311 | if (h->root.type == bfd_link_hash_indirect) | |
13312 | return TRUE; | |
13313 | ||
49c09209 AM |
13314 | info = inf; |
13315 | htab = ppc_hash_table (info); | |
13316 | if (htab == NULL) | |
13317 | return FALSE; | |
13318 | ||
13319 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13320 | if (ent->plt.offset != (bfd_vma) -1) | |
13321 | { | |
13322 | /* This symbol has an entry in the procedure linkage | |
13323 | table. Set it up. */ | |
13324 | Elf_Internal_Rela rela; | |
2d7ad24e | 13325 | asection *plt, *relplt; |
49c09209 AM |
13326 | bfd_byte *loc; |
13327 | ||
13328 | if (!htab->elf.dynamic_sections_created | |
13329 | || h->dynindx == -1) | |
13330 | { | |
13331 | if (!(h->def_regular | |
13332 | && (h->root.type == bfd_link_hash_defined | |
13333 | || h->root.type == bfd_link_hash_defweak))) | |
13334 | continue; | |
2d7ad24e AM |
13335 | if (h->type == STT_GNU_IFUNC) |
13336 | { | |
13337 | plt = htab->elf.iplt; | |
13338 | relplt = htab->elf.irelplt; | |
13339 | htab->local_ifunc_resolver = 1; | |
13340 | if (htab->opd_abi) | |
13341 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13342 | else | |
13343 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13344 | } | |
49c09209 | 13345 | else |
2d7ad24e AM |
13346 | { |
13347 | plt = htab->pltlocal; | |
13348 | if (bfd_link_pic (info)) | |
13349 | { | |
13350 | relplt = htab->relpltlocal; | |
13351 | if (htab->opd_abi) | |
13352 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13353 | else | |
13354 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13355 | } | |
13356 | else | |
13357 | relplt = NULL; | |
13358 | } | |
49c09209 AM |
13359 | rela.r_addend = (h->root.u.def.value |
13360 | + h->root.u.def.section->output_offset | |
13361 | + h->root.u.def.section->output_section->vma | |
13362 | + ent->addend); | |
2d7ad24e AM |
13363 | |
13364 | if (relplt == NULL) | |
13365 | { | |
13366 | loc = plt->contents + ent->plt.offset; | |
13367 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13368 | if (htab->opd_abi) | |
13369 | { | |
13370 | bfd_vma toc = elf_gp (info->output_bfd); | |
13371 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13372 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13373 | } | |
13374 | } | |
13375 | else | |
13376 | { | |
13377 | rela.r_offset = (plt->output_section->vma | |
13378 | + plt->output_offset | |
13379 | + ent->plt.offset); | |
13380 | loc = relplt->contents + (relplt->reloc_count++ | |
13381 | * sizeof (Elf64_External_Rela)); | |
13382 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13383 | } | |
49c09209 AM |
13384 | } |
13385 | else | |
13386 | { | |
13387 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13388 | + htab->elf.splt->output_offset | |
13389 | + ent->plt.offset); | |
13390 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13391 | rela.r_addend = ent->addend; | |
13392 | loc = (htab->elf.srelplt->contents | |
13393 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13394 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13395 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13396 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13397 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13398 | } |
49c09209 AM |
13399 | } |
13400 | ||
a345bc8d AM |
13401 | if (!h->pointer_equality_needed) |
13402 | return TRUE; | |
13403 | ||
13404 | if (h->def_regular) | |
13405 | return TRUE; | |
13406 | ||
9e390558 | 13407 | s = htab->global_entry; |
49c09209 AM |
13408 | if (s == NULL || s->size == 0) |
13409 | return TRUE; | |
13410 | ||
13411 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13412 | if (ent->plt.offset != (bfd_vma) -1 | |
13413 | && ent->addend == 0) | |
a345bc8d AM |
13414 | { |
13415 | bfd_byte *p; | |
13416 | asection *plt; | |
13417 | bfd_vma off; | |
13418 | ||
a345bc8d | 13419 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13420 | plt = htab->elf.splt; |
a345bc8d AM |
13421 | if (!htab->elf.dynamic_sections_created |
13422 | || h->dynindx == -1) | |
2d7ad24e AM |
13423 | { |
13424 | if (h->type == STT_GNU_IFUNC) | |
13425 | plt = htab->elf.iplt; | |
13426 | else | |
13427 | plt = htab->pltlocal; | |
13428 | } | |
49c09209 | 13429 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13430 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13431 | ||
13432 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13433 | { | |
13434 | info->callbacks->einfo | |
c1c8c1ef | 13435 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13436 | h->root.root.string); |
13437 | bfd_set_error (bfd_error_bad_value); | |
13438 | htab->stub_error = TRUE; | |
13439 | } | |
13440 | ||
7341d5e2 AM |
13441 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13442 | if (htab->params->emit_stub_syms) | |
13443 | { | |
13444 | size_t len = strlen (h->root.root.string); | |
13445 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13446 | ||
13447 | if (name == NULL) | |
13448 | return FALSE; | |
13449 | ||
13450 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13451 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13452 | if (h == NULL) | |
13453 | return FALSE; | |
13454 | if (h->root.type == bfd_link_hash_new) | |
13455 | { | |
13456 | h->root.type = bfd_link_hash_defined; | |
13457 | h->root.u.def.section = s; | |
13458 | h->root.u.def.value = p - s->contents; | |
13459 | h->ref_regular = 1; | |
13460 | h->def_regular = 1; | |
13461 | h->ref_regular_nonweak = 1; | |
13462 | h->forced_local = 1; | |
13463 | h->non_elf = 0; | |
2ec55de3 | 13464 | h->root.linker_def = 1; |
7341d5e2 AM |
13465 | } |
13466 | } | |
13467 | ||
a345bc8d AM |
13468 | if (PPC_HA (off) != 0) |
13469 | { | |
13470 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13471 | p += 4; | |
13472 | } | |
13473 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13474 | p += 4; | |
13475 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13476 | p += 4; | |
407aa07c | 13477 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13478 | break; |
13479 | } | |
13480 | return TRUE; | |
13481 | } | |
13482 | ||
49c09209 AM |
13483 | /* Write PLT relocs for locals. */ |
13484 | ||
13485 | static bfd_boolean | |
13486 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
13487 | { | |
13488 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13489 | bfd *ibfd; | |
13490 | ||
13491 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13492 | { | |
13493 | struct got_entry **lgot_ents, **end_lgot_ents; | |
13494 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13495 | Elf_Internal_Shdr *symtab_hdr; | |
13496 | bfd_size_type locsymcount; | |
13497 | Elf_Internal_Sym *local_syms = NULL; | |
13498 | struct plt_entry *ent; | |
13499 | ||
13500 | if (!is_ppc64_elf (ibfd)) | |
13501 | continue; | |
13502 | ||
13503 | lgot_ents = elf_local_got_ents (ibfd); | |
13504 | if (!lgot_ents) | |
13505 | continue; | |
13506 | ||
13507 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13508 | locsymcount = symtab_hdr->sh_info; | |
13509 | end_lgot_ents = lgot_ents + locsymcount; | |
13510 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13511 | end_local_plt = local_plt + locsymcount; | |
13512 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
13513 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
13514 | if (ent->plt.offset != (bfd_vma) -1) | |
13515 | { | |
13516 | Elf_Internal_Sym *sym; | |
13517 | asection *sym_sec; | |
13518 | asection *plt, *relplt; | |
13519 | bfd_byte *loc; | |
13520 | bfd_vma val; | |
49c09209 AM |
13521 | |
13522 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
13523 | lplt - local_plt, ibfd)) | |
13524 | { | |
13525 | if (local_syms != NULL | |
13526 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13527 | free (local_syms); | |
13528 | return FALSE; | |
13529 | } | |
13530 | ||
13531 | val = sym->st_value + ent->addend; | |
13532 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
13533 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
13534 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
13535 | ||
2d7ad24e AM |
13536 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
13537 | { | |
13538 | htab->local_ifunc_resolver = 1; | |
13539 | plt = htab->elf.iplt; | |
13540 | relplt = htab->elf.irelplt; | |
13541 | } | |
13542 | else | |
13543 | { | |
13544 | plt = htab->pltlocal; | |
13545 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
13546 | } | |
49c09209 | 13547 | |
2d7ad24e AM |
13548 | if (relplt == NULL) |
13549 | { | |
13550 | loc = plt->contents + ent->plt.offset; | |
13551 | bfd_put_64 (info->output_bfd, val, loc); | |
13552 | if (htab->opd_abi) | |
13553 | { | |
13554 | bfd_vma toc = elf_gp (ibfd); | |
13555 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13556 | } | |
13557 | } | |
49c09209 | 13558 | else |
2d7ad24e AM |
13559 | { |
13560 | Elf_Internal_Rela rela; | |
13561 | rela.r_offset = (ent->plt.offset | |
13562 | + plt->output_offset | |
13563 | + plt->output_section->vma); | |
13564 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13565 | { | |
13566 | if (htab->opd_abi) | |
13567 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13568 | else | |
13569 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13570 | } | |
13571 | else | |
13572 | { | |
13573 | if (htab->opd_abi) | |
13574 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13575 | else | |
13576 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13577 | } | |
13578 | rela.r_addend = val; | |
13579 | loc = relplt->contents + (relplt->reloc_count++ | |
13580 | * sizeof (Elf64_External_Rela)); | |
13581 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13582 | } | |
49c09209 AM |
13583 | } |
13584 | ||
13585 | if (local_syms != NULL | |
13586 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13587 | { | |
13588 | if (!info->keep_memory) | |
13589 | free (local_syms); | |
13590 | else | |
13591 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13592 | } | |
13593 | } | |
13594 | return TRUE; | |
13595 | } | |
13596 | ||
721956f4 AM |
13597 | /* Build all the stubs associated with the current output file. |
13598 | The stubs are kept in a hash table attached to the main linker | |
13599 | hash table. This function is called via gldelf64ppc_finish. */ | |
13600 | ||
b34976b6 | 13601 | bfd_boolean |
e7d1c40c | 13602 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13603 | char **stats) |
5d1634d7 AM |
13604 | { |
13605 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13606 | struct map_stub *group; |
721956f4 | 13607 | asection *stub_sec; |
5d1634d7 | 13608 | bfd_byte *p; |
e717da7e | 13609 | int stub_sec_count = 0; |
5d1634d7 | 13610 | |
4dfe6ac6 NC |
13611 | if (htab == NULL) |
13612 | return FALSE; | |
13613 | ||
eea6121a | 13614 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 AM |
13615 | for (group = htab->group; group != NULL; group = group->next) |
13616 | if ((stub_sec = group->stub_sec) != NULL | |
eea6121a | 13617 | && stub_sec->size != 0) |
e717da7e | 13618 | { |
e7d1c40c | 13619 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
13620 | if (stub_sec->contents == NULL) |
13621 | return FALSE; | |
eea6121a | 13622 | stub_sec->size = 0; |
e717da7e | 13623 | } |
5d1634d7 | 13624 | |
23eb7e01 | 13625 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13626 | { |
9f951329 | 13627 | unsigned int indx; |
ad8e1ba5 | 13628 | bfd_vma plt0; |
9f951329 | 13629 | |
721956f4 | 13630 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13631 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13632 | { |
13633 | struct elf_link_hash_entry *h; | |
468392fb AM |
13634 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13635 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13636 | if (h == NULL) |
13637 | return FALSE; | |
13638 | if (h->root.type == bfd_link_hash_new) | |
13639 | { | |
13640 | h->root.type = bfd_link_hash_defined; | |
13641 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13642 | h->root.u.def.value = 8; |
f5385ebf AM |
13643 | h->ref_regular = 1; |
13644 | h->def_regular = 1; | |
13645 | h->ref_regular_nonweak = 1; | |
13646 | h->forced_local = 1; | |
13647 | h->non_elf = 0; | |
2ec55de3 | 13648 | h->root.linker_def = 1; |
97b639ba AM |
13649 | } |
13650 | } | |
33e44f2e AM |
13651 | plt0 = (htab->elf.splt->output_section->vma |
13652 | + htab->elf.splt->output_offset | |
13653 | - 16); | |
176a0d42 AM |
13654 | if (info->emitrelocations) |
13655 | { | |
13656 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13657 | if (r == NULL) | |
13658 | return FALSE; | |
13659 | r->r_offset = (htab->glink->output_offset | |
13660 | + htab->glink->output_section->vma); | |
13661 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13662 | r->r_addend = plt0; | |
13663 | } | |
4ce794b7 | 13664 | p = htab->glink->contents; |
176a0d42 | 13665 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13666 | bfd_put_64 (htab->glink->owner, plt0, p); |
13667 | p += 8; | |
b9e5796b AM |
13668 | if (htab->opd_abi) |
13669 | { | |
13670 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13671 | p += 4; | |
13672 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13673 | p += 4; | |
13674 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13675 | p += 4; | |
13676 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13677 | p += 4; | |
13678 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13679 | p += 4; | |
13680 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13681 | p += 4; | |
13682 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13683 | p += 4; | |
13684 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13685 | p += 4; | |
13686 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13687 | p += 4; | |
13688 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13689 | p += 4; | |
13690 | } | |
13691 | else | |
13692 | { | |
13693 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13694 | p += 4; | |
13695 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13696 | p += 4; | |
13697 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13698 | p += 4; | |
f378ab09 AM |
13699 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13700 | p += 4; | |
b9e5796b AM |
13701 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13702 | p += 4; | |
13703 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13704 | p += 4; | |
13705 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13706 | p += 4; | |
13707 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13708 | p += 4; | |
13709 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13710 | p += 4; | |
13711 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13712 | p += 4; | |
13713 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13714 | p += 4; | |
13715 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13716 | p += 4; | |
13717 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13718 | p += 4; | |
13719 | } | |
407aa07c AM |
13720 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13721 | p += 4; | |
c75bc4f7 | 13722 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13723 | |
9f951329 AM |
13724 | /* Build the .glink lazy link call stubs. */ |
13725 | indx = 0; | |
9e390558 | 13726 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13727 | { |
b9e5796b | 13728 | if (htab->opd_abi) |
9f951329 | 13729 | { |
b9e5796b AM |
13730 | if (indx < 0x8000) |
13731 | { | |
13732 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13733 | p += 4; | |
13734 | } | |
13735 | else | |
13736 | { | |
13737 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13738 | p += 4; | |
13739 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13740 | p); | |
13741 | p += 4; | |
13742 | } | |
9f951329 | 13743 | } |
4ce794b7 | 13744 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13745 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13746 | indx++; |
9f951329 AM |
13747 | p += 4; |
13748 | } | |
5d1634d7 | 13749 | } |
5d1634d7 | 13750 | |
49c09209 AM |
13751 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13752 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13753 | ||
13754 | if (!write_plt_relocs_for_local_syms (info)) | |
13755 | return FALSE; | |
9e390558 | 13756 | |
7341d5e2 | 13757 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13758 | { |
4ce794b7 | 13759 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13760 | htab->brlt->size); |
4ce794b7 | 13761 | if (htab->brlt->contents == NULL) |
b34976b6 | 13762 | return FALSE; |
721956f4 | 13763 | } |
ee75fd95 | 13764 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13765 | { |
13766 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13767 | htab->relbrlt->size); |
63bc6f6c AM |
13768 | if (htab->relbrlt->contents == NULL) |
13769 | return FALSE; | |
13770 | } | |
5d1634d7 | 13771 | |
721956f4 AM |
13772 | /* Build the stubs as directed by the stub hash table. */ |
13773 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13774 | |
a4b6fadd AM |
13775 | for (group = htab->group; group != NULL; group = group->next) |
13776 | if (group->needs_save_res) | |
7dda8d3c | 13777 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13778 | |
aa8a7074 AM |
13779 | if (htab->relbrlt != NULL) |
13780 | htab->relbrlt->reloc_count = 0; | |
13781 | ||
e7d1c40c | 13782 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13783 | for (group = htab->group; group != NULL; group = group->next) |
13784 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13785 | { |
13786 | int align = abs (htab->params->plt_stub_align); | |
13787 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13788 | } | |
794e51c0 | 13789 | |
7dda8d3c AM |
13790 | for (group = htab->group; group != NULL; group = group->next) |
13791 | if (group->needs_save_res) | |
13792 | { | |
13793 | stub_sec = group->stub_sec; | |
13794 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13795 | htab->sfpr->contents, htab->sfpr->size); | |
13796 | if (htab->params->emit_stub_syms) | |
13797 | { | |
13798 | unsigned int i; | |
13799 | ||
13800 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13801 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13802 | return FALSE; | |
13803 | } | |
13804 | } | |
13805 | ||
d4aaa2a0 AM |
13806 | for (group = htab->group; group != NULL; group = group->next) |
13807 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13808 | { |
13809 | stub_sec_count += 1; | |
c9301e31 AM |
13810 | if (stub_sec->rawsize != stub_sec->size |
13811 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13812 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13813 | break; |
13814 | } | |
5d1634d7 | 13815 | |
25516cc5 | 13816 | if (group != NULL) |
5d1634d7 | 13817 | { |
b34976b6 | 13818 | htab->stub_error = TRUE; |
cf97bcb0 | 13819 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13820 | } |
721956f4 | 13821 | |
d2a300cf AM |
13822 | if (htab->stub_error) |
13823 | return FALSE; | |
13824 | ||
13825 | if (stats != NULL) | |
13826 | { | |
db84fff3 | 13827 | size_t len; |
d2a300cf AM |
13828 | *stats = bfd_malloc (500); |
13829 | if (*stats == NULL) | |
13830 | return FALSE; | |
13831 | ||
db84fff3 AM |
13832 | len = sprintf (*stats, |
13833 | ngettext ("linker stubs in %u group\n", | |
13834 | "linker stubs in %u groups\n", | |
13835 | stub_sec_count), | |
13836 | stub_sec_count); | |
13837 | sprintf (*stats + len, _(" branch %lu\n" | |
13838 | " toc adjust %lu\n" | |
13839 | " long branch %lu\n" | |
13840 | " long toc adj %lu\n" | |
13841 | " plt call %lu\n" | |
13842 | " plt call toc %lu\n" | |
13843 | " global entry %lu"), | |
4ce794b7 AM |
13844 | htab->stub_count[ppc_stub_long_branch - 1], |
13845 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13846 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13847 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13848 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13849 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13850 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13851 | } |
13852 | return TRUE; | |
5bd4f169 AM |
13853 | } |
13854 | ||
60124e18 AM |
13855 | /* What to do when ld finds relocations against symbols defined in |
13856 | discarded sections. */ | |
13857 | ||
13858 | static unsigned int | |
13859 | ppc64_elf_action_discarded (asection *sec) | |
13860 | { | |
13861 | if (strcmp (".opd", sec->name) == 0) | |
13862 | return 0; | |
13863 | ||
13864 | if (strcmp (".toc", sec->name) == 0) | |
13865 | return 0; | |
13866 | ||
bce50a28 JJ |
13867 | if (strcmp (".toc1", sec->name) == 0) |
13868 | return 0; | |
13869 | ||
60124e18 AM |
13870 | return _bfd_elf_default_action_discarded (sec); |
13871 | } | |
13872 | ||
5bd4f169 AM |
13873 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13874 | to handle the relocations for a section. | |
13875 | ||
13876 | The relocs are always passed as Rela structures; if the section | |
13877 | actually uses Rel structures, the r_addend field will always be | |
13878 | zero. | |
13879 | ||
13880 | This function is responsible for adjust the section contents as | |
13881 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13882 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13883 | necessary. |
13884 | ||
13885 | This function does not have to worry about setting the reloc | |
13886 | address or the reloc symbol index. | |
13887 | ||
13888 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13889 | ||
13890 | LOCAL_SECTIONS is an array giving the section in the input file | |
13891 | corresponding to the st_shndx field of each local symbol. | |
13892 | ||
13893 | The global hash table entry for the global symbols can be found | |
13894 | via elf_sym_hashes (input_bfd). | |
13895 | ||
1049f94e | 13896 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13897 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13898 | going to be the section symbol corresponding to the output | |
13899 | section, which means that the addend must be adjusted | |
13900 | accordingly. */ | |
13901 | ||
b34976b6 | 13902 | static bfd_boolean |
4ce794b7 AM |
13903 | ppc64_elf_relocate_section (bfd *output_bfd, |
13904 | struct bfd_link_info *info, | |
13905 | bfd *input_bfd, | |
13906 | asection *input_section, | |
13907 | bfd_byte *contents, | |
13908 | Elf_Internal_Rela *relocs, | |
13909 | Elf_Internal_Sym *local_syms, | |
13910 | asection **local_sections) | |
5bd4f169 | 13911 | { |
65f38f15 | 13912 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13913 | Elf_Internal_Shdr *symtab_hdr; |
13914 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13915 | Elf_Internal_Rela *rel; |
c316a17c | 13916 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13917 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13918 | Elf_Internal_Rela outrel; |
13919 | bfd_byte *loc; | |
411e1bfb | 13920 | struct got_entry **local_got_ents; |
5bd4f169 | 13921 | bfd_vma TOCstart; |
b34976b6 AM |
13922 | bfd_boolean ret = TRUE; |
13923 | bfd_boolean is_opd; | |
794e51c0 AM |
13924 | /* Assume 'at' branch hints. */ |
13925 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13926 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13927 | |
65f38f15 | 13928 | /* Initialize howto table if needed. */ |
5bd4f169 | 13929 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13930 | ppc_howto_init (); |
13931 | ||
65f38f15 | 13932 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13933 | if (htab == NULL) |
13934 | return FALSE; | |
ee75fd95 AM |
13935 | |
13936 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13937 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13938 | return TRUE; |
13939 | ||
0c8d6e5c | 13940 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13941 | |
411e1bfb | 13942 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13943 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13944 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13945 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13946 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13947 | |
c316a17c | 13948 | rel = wrel = relocs; |
5bd4f169 | 13949 | relend = relocs + input_section->reloc_count; |
c316a17c | 13950 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13951 | { |
04c9666a | 13952 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13953 | bfd_vma addend; |
5bd4f169 AM |
13954 | bfd_reloc_status_type r; |
13955 | Elf_Internal_Sym *sym; | |
13956 | asection *sec; | |
039b3fef AM |
13957 | struct elf_link_hash_entry *h_elf; |
13958 | struct ppc_link_hash_entry *h; | |
13959 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13960 | const char *sym_name; |
0d4792f7 | 13961 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13962 | bfd_vma toc_addend; |
f961d9dd AM |
13963 | unsigned char tls_mask, tls_gd, tls_type; |
13964 | unsigned char sym_type; | |
5bd4f169 | 13965 | bfd_vma relocation; |
23cedd1d | 13966 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 13967 | bfd_boolean warned; |
bc30df16 | 13968 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13969 | unsigned int insn; |
e11840f9 | 13970 | unsigned int mask; |
721956f4 AM |
13971 | struct ppc_stub_hash_entry *stub_entry; |
13972 | bfd_vma max_br_offset; | |
13973 | bfd_vma from; | |
c316a17c | 13974 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13975 | reloc_howto_type *howto; |
13976 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13977 | |
c316a17c AM |
13978 | again: |
13979 | orig_rel = *rel; | |
13980 | ||
4ce794b7 | 13981 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13982 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13983 | |
13984 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13985 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13986 | proper TOC base to use. */ | |
13987 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13988 | && wrel != relocs |
13989 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13990 | && is_opd) |
c316a17c | 13991 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13992 | |
4ce794b7 AM |
13993 | sym = NULL; |
13994 | sec = NULL; | |
039b3fef | 13995 | h_elf = NULL; |
4ce794b7 | 13996 | sym_name = NULL; |
b34976b6 AM |
13997 | unresolved_reloc = FALSE; |
13998 | warned = FALSE; | |
65f38f15 | 13999 | |
0b13192e | 14000 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14001 | { |
14002 | /* It's a local symbol. */ | |
74f0fb50 | 14003 | struct _opd_sec_data *opd; |
4025353c | 14004 | |
5bd4f169 AM |
14005 | sym = local_syms + r_symndx; |
14006 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14007 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14008 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14009 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14010 | opd = get_opd_info (sec); |
14011 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14012 | { |
51aecdc5 AM |
14013 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14014 | + rel->r_addend)]; | |
4025353c AM |
14015 | if (adjust == -1) |
14016 | relocation = 0; | |
14017 | else | |
4cc603a5 AM |
14018 | { |
14019 | /* If this is a relocation against the opd section sym | |
14020 | and we have edited .opd, adjust the reloc addend so | |
14021 | that ld -r and ld --emit-relocs output is correct. | |
14022 | If it is a reloc against some other .opd symbol, | |
14023 | then the symbol value will be adjusted later. */ | |
14024 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14025 | rel->r_addend += adjust; | |
14026 | else | |
14027 | relocation += adjust; | |
14028 | } | |
1e2f5b6e | 14029 | } |
5bd4f169 AM |
14030 | } |
14031 | else | |
14032 | { | |
62d887d4 L |
14033 | bfd_boolean ignored; |
14034 | ||
b2a8e766 AM |
14035 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14036 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14037 | h_elf, sec, relocation, |
62d887d4 | 14038 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14039 | sym_name = h_elf->root.root.string; |
14040 | sym_type = h_elf->type; | |
b69fdb4e AM |
14041 | if (sec != NULL |
14042 | && sec->owner == output_bfd | |
14043 | && strcmp (sec->name, ".opd") == 0) | |
14044 | { | |
14045 | /* This is a symbol defined in a linker script. All | |
14046 | such are defined in output sections, even those | |
14047 | defined by simple assignment from a symbol defined in | |
14048 | an input section. Transfer the symbol to an | |
14049 | appropriate input .opd section, so that a branch to | |
14050 | this symbol will be mapped to the location specified | |
14051 | by the opd entry. */ | |
14052 | struct bfd_link_order *lo; | |
14053 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14054 | if (lo->type == bfd_indirect_link_order) | |
14055 | { | |
14056 | asection *isec = lo->u.indirect.section; | |
14057 | if (h_elf->root.u.def.value >= isec->output_offset | |
14058 | && h_elf->root.u.def.value < (isec->output_offset | |
14059 | + isec->size)) | |
14060 | { | |
14061 | h_elf->root.u.def.value -= isec->output_offset; | |
14062 | h_elf->root.u.def.section = isec; | |
14063 | sec = isec; | |
14064 | break; | |
14065 | } | |
14066 | } | |
14067 | } | |
5bd4f169 | 14068 | } |
039b3fef | 14069 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 14070 | |
dbaa2011 | 14071 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14072 | { |
14073 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14074 | input_bfd, input_section, | |
14075 | contents + rel->r_offset); | |
14076 | wrel->r_offset = rel->r_offset; | |
14077 | wrel->r_info = 0; | |
14078 | wrel->r_addend = 0; | |
14079 | ||
14080 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14081 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14082 | non-debug to preserve relocs in .eh_frame which the |
14083 | eh_frame editing code expects to be present. */ | |
14084 | if (bfd_link_relocatable (info) | |
14085 | && (input_section->flags & SEC_DEBUGGING)) | |
14086 | wrel--; | |
14087 | ||
14088 | continue; | |
14089 | } | |
ab96bf03 | 14090 | |
0e1862bb | 14091 | if (bfd_link_relocatable (info)) |
c316a17c | 14092 | goto copy_reloc; |
ab96bf03 | 14093 | |
f40da81b AM |
14094 | if (h != NULL && &h->elf == htab->elf.hgot) |
14095 | { | |
6f20ed8a | 14096 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14097 | sec = bfd_abs_section_ptr; |
14098 | unresolved_reloc = FALSE; | |
14099 | } | |
14100 | ||
951fd09b AM |
14101 | /* TLS optimizations. Replace instruction sequences and relocs |
14102 | based on information we collected in tls_optimize. We edit | |
14103 | RELOCS so that --emit-relocs will output something sensible | |
14104 | for the final instruction stream. */ | |
14105 | tls_mask = 0; | |
14106 | tls_gd = 0; | |
0d4792f7 | 14107 | toc_symndx = 0; |
727fc41e AM |
14108 | if (h != NULL) |
14109 | tls_mask = h->tls_mask; | |
14110 | else if (local_got_ents != NULL) | |
411e1bfb | 14111 | { |
e054468f AM |
14112 | struct plt_entry **local_plt = (struct plt_entry **) |
14113 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14114 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14115 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14116 | tls_mask = lgot_masks[r_symndx]; |
14117 | } | |
37da22e5 | 14118 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14119 | && (r_type == R_PPC64_TLS |
14120 | || r_type == R_PPC64_TLSGD | |
14121 | || r_type == R_PPC64_TLSLD)) | |
14122 | { | |
14123 | /* Check for toc tls entries. */ | |
f961d9dd | 14124 | unsigned char *toc_tls; |
0d4792f7 | 14125 | |
727fc41e AM |
14126 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14127 | &local_syms, rel, input_bfd)) | |
14128 | return FALSE; | |
0d4792f7 | 14129 | |
727fc41e AM |
14130 | if (toc_tls) |
14131 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14132 | } |
14133 | ||
14134 | /* Check that tls relocs are used with tls syms, and non-tls | |
14135 | relocs are used with non-tls syms. */ | |
cf35638d | 14136 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14137 | && r_type != R_PPC64_NONE |
14138 | && (h == NULL | |
039b3fef AM |
14139 | || h->elf.root.type == bfd_link_hash_defined |
14140 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
14141 | && (IS_PPC64_TLS_RELOC (r_type) |
14142 | != (sym_type == STT_TLS | |
14143 | || (sym_type == STT_SECTION | |
14144 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 14145 | { |
37da22e5 | 14146 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14147 | && (r_type == R_PPC64_TLS |
14148 | || r_type == R_PPC64_TLSGD | |
14149 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14150 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14151 | ; | |
14152 | else | |
25f53a85 | 14153 | info->callbacks->einfo |
1d483afe | 14154 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14155 | /* xgettext:c-format */ |
c1c8c1ef | 14156 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14157 | /* xgettext:c-format */ |
c1c8c1ef | 14158 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14159 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14160 | ppc64_elf_howto_table[r_type]->name, |
14161 | sym_name); | |
411e1bfb AM |
14162 | } |
14163 | ||
14164 | /* Ensure reloc mapping code below stays sane. */ | |
14165 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14166 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14167 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14168 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14169 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14170 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14171 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14172 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14173 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14174 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14175 | abort (); | |
0d4792f7 | 14176 | |
411e1bfb AM |
14177 | switch (r_type) |
14178 | { | |
14179 | default: | |
411e1bfb AM |
14180 | break; |
14181 | ||
ba761f19 | 14182 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14183 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14184 | if ((insn & (0x3f << 26)) != 58u << 26) |
14185 | abort (); | |
14186 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14187 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14188 | r_type = R_PPC64_TOC16_LO; |
14189 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14190 | break; | |
14191 | ||
411e1bfb AM |
14192 | case R_PPC64_TOC16: |
14193 | case R_PPC64_TOC16_LO: | |
14194 | case R_PPC64_TOC16_DS: | |
14195 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14196 | { |
14197 | /* Check for toc tls entries. */ | |
f961d9dd | 14198 | unsigned char *toc_tls; |
951fd09b | 14199 | int retval; |
411e1bfb | 14200 | |
3a71aa26 AM |
14201 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14202 | &local_syms, rel, input_bfd); | |
951fd09b | 14203 | if (retval == 0) |
411e1bfb AM |
14204 | return FALSE; |
14205 | ||
14206 | if (toc_tls) | |
14207 | { | |
951fd09b | 14208 | tls_mask = *toc_tls; |
411e1bfb AM |
14209 | if (r_type == R_PPC64_TOC16_DS |
14210 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14211 | { |
37da22e5 | 14212 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14213 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14214 | goto toctprel; | |
14215 | } | |
411e1bfb | 14216 | else |
951fd09b AM |
14217 | { |
14218 | /* If we found a GD reloc pair, then we might be | |
14219 | doing a GD->IE transition. */ | |
14220 | if (retval == 2) | |
14221 | { | |
14222 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
14223 | if ((tls_mask & TLS_TLS) != 0 |
14224 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14225 | goto tls_ldgd_opt; |
951fd09b AM |
14226 | } |
14227 | else if (retval == 3) | |
14228 | { | |
37da22e5 AM |
14229 | if ((tls_mask & TLS_TLS) != 0 |
14230 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14231 | goto tls_ldgd_opt; |
951fd09b AM |
14232 | } |
14233 | } | |
411e1bfb AM |
14234 | } |
14235 | } | |
14236 | break; | |
14237 | ||
9d6ded02 AM |
14238 | case R_PPC64_GOT_TPREL16_HI: |
14239 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14240 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14241 | && (tls_mask & TLS_TPREL) == 0) |
14242 | { | |
14243 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14244 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14245 | r_type = R_PPC64_NONE; |
14246 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14247 | } | |
14248 | break; | |
14249 | ||
411e1bfb AM |
14250 | case R_PPC64_GOT_TPREL16_DS: |
14251 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14252 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14253 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14254 | { |
81407a69 | 14255 | toctprel: |
95f0d0d2 | 14256 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14257 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14258 | insn &= 31 << 21; |
14259 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14260 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14261 | contents + rel->r_offset - d_offset); |
411e1bfb | 14262 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14263 | if (toc_symndx != 0) |
14264 | { | |
14265 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14266 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14267 | /* We changed the symbol. Start over in order to |
14268 | get h, sym, sec etc. right. */ | |
c316a17c | 14269 | goto again; |
0d4792f7 AM |
14270 | } |
14271 | else | |
14272 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14273 | } |
14274 | break; | |
14275 | ||
14276 | case R_PPC64_TLS: | |
37da22e5 | 14277 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14278 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14279 | { |
95f0d0d2 | 14280 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
14281 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14282 | if (insn == 0) | |
411e1bfb | 14283 | abort (); |
95f0d0d2 | 14284 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 14285 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
14286 | PPC64_TPREL16_LO which is at low-order half-word. */ |
14287 | rel->r_offset += d_offset; | |
0d4792f7 AM |
14288 | r_type = R_PPC64_TPREL16_LO; |
14289 | if (toc_symndx != 0) | |
14290 | { | |
14291 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14292 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14293 | /* We changed the symbol. Start over in order to |
14294 | get h, sym, sec etc. right. */ | |
c316a17c | 14295 | goto again; |
0d4792f7 AM |
14296 | } |
14297 | else | |
14298 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14299 | } |
14300 | break; | |
14301 | ||
411e1bfb AM |
14302 | case R_PPC64_GOT_TLSGD16_HI: |
14303 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14304 | tls_gd = TLS_TPRELGD; |
37da22e5 | 14305 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14306 | goto tls_gdld_hi; |
14307 | break; | |
14308 | ||
411e1bfb AM |
14309 | case R_PPC64_GOT_TLSLD16_HI: |
14310 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14311 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14312 | { |
951fd09b AM |
14313 | tls_gdld_hi: |
14314 | if ((tls_mask & tls_gd) != 0) | |
14315 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14316 | + R_PPC64_GOT_TPREL16_DS); | |
14317 | else | |
411e1bfb | 14318 | { |
4fe5ca5b | 14319 | rel->r_offset -= d_offset; |
95f0d0d2 | 14320 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14321 | r_type = R_PPC64_NONE; |
411e1bfb | 14322 | } |
951fd09b | 14323 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14324 | } |
14325 | break; | |
14326 | ||
951fd09b AM |
14327 | case R_PPC64_GOT_TLSGD16: |
14328 | case R_PPC64_GOT_TLSGD16_LO: | |
14329 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 14330 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14331 | goto tls_ldgd_opt; |
951fd09b | 14332 | break; |
411e1bfb | 14333 | |
951fd09b AM |
14334 | case R_PPC64_GOT_TLSLD16: |
14335 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14336 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14337 | { |
b9f04fe0 | 14338 | unsigned int insn1, insn2; |
102890f0 AM |
14339 | bfd_vma offset; |
14340 | ||
14341 | tls_ldgd_opt: | |
727fc41e AM |
14342 | offset = (bfd_vma) -1; |
14343 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14344 | __tls_get_addr calls, we must trust that the call | |
14345 | stays with its arg setup insns, ie. that the next | |
14346 | reloc is the __tls_get_addr call associated with | |
14347 | the current reloc. Edit both insns. */ | |
14348 | if (input_section->has_tls_get_addr_call | |
14349 | && rel + 1 < relend | |
14350 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14351 | htab->tls_get_addr, | |
14352 | htab->tls_get_addr_fd)) | |
14353 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14354 | /* We read the low GOT_TLS (or TOC16) insn because we |
14355 | need to keep the destination reg. It may be | |
14356 | something other than the usual r3, and moved to r3 | |
14357 | before the call by intervening code. */ | |
95f0d0d2 | 14358 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14359 | contents + rel->r_offset - d_offset); |
102890f0 | 14360 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14361 | { |
102890f0 | 14362 | /* IE */ |
b86ac8e3 | 14363 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
14364 | insn1 |= 58 << 26; /* ld */ |
14365 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 14366 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14367 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
14368 | if ((tls_mask & TLS_EXPLICIT) == 0) |
14369 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14370 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 14371 | else |
102890f0 AM |
14372 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
14373 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14374 | } | |
14375 | else | |
14376 | { | |
14377 | /* LE */ | |
b86ac8e3 AM |
14378 | insn1 &= 0x1f << 21; |
14379 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14380 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14381 | if (tls_gd == 0) | |
951fd09b | 14382 | { |
102890f0 | 14383 | /* Was an LD reloc. */ |
1d483afe AM |
14384 | if (toc_symndx) |
14385 | sec = local_sections[toc_symndx]; | |
14386 | for (r_symndx = 0; | |
14387 | r_symndx < symtab_hdr->sh_info; | |
14388 | r_symndx++) | |
14389 | if (local_sections[r_symndx] == sec) | |
14390 | break; | |
14391 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14392 | r_symndx = STN_UNDEF; |
102890f0 | 14393 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14394 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
14395 | rel->r_addend -= (local_syms[r_symndx].st_value |
14396 | + sec->output_offset | |
14397 | + sec->output_section->vma); | |
951fd09b | 14398 | } |
102890f0 | 14399 | else if (toc_symndx != 0) |
3a71aa26 AM |
14400 | { |
14401 | r_symndx = toc_symndx; | |
14402 | rel->r_addend = toc_addend; | |
14403 | } | |
102890f0 AM |
14404 | r_type = R_PPC64_TPREL16_HA; |
14405 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14406 | if (offset != (bfd_vma) -1) |
14407 | { | |
14408 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14409 | R_PPC64_TPREL16_LO); | |
14410 | rel[1].r_offset = offset + d_offset; | |
14411 | rel[1].r_addend = rel->r_addend; | |
14412 | } | |
102890f0 | 14413 | } |
95f0d0d2 | 14414 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 14415 | contents + rel->r_offset - d_offset); |
727fc41e | 14416 | if (offset != (bfd_vma) -1) |
b9f04fe0 | 14417 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
14418 | if ((tls_mask & tls_gd) == 0 |
14419 | && (tls_gd == 0 || toc_symndx != 0)) | |
14420 | { | |
14421 | /* We changed the symbol. Start over in order | |
14422 | to get h, sym, sec etc. right. */ | |
c316a17c | 14423 | goto again; |
727fc41e AM |
14424 | } |
14425 | } | |
14426 | break; | |
14427 | ||
14428 | case R_PPC64_TLSGD: | |
37da22e5 | 14429 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 14430 | && rel + 1 < relend) |
727fc41e | 14431 | { |
b9f04fe0 | 14432 | unsigned int insn2; |
727fc41e AM |
14433 | bfd_vma offset = rel->r_offset; |
14434 | ||
23cedd1d AM |
14435 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14436 | { | |
14437 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14438 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14439 | break; | |
14440 | } | |
14441 | ||
14442 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14443 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14444 | ||
727fc41e AM |
14445 | if ((tls_mask & TLS_TPRELGD) != 0) |
14446 | { | |
14447 | /* IE */ | |
14448 | r_type = R_PPC64_NONE; | |
14449 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
14450 | } | |
14451 | else | |
14452 | { | |
14453 | /* LE */ | |
14454 | if (toc_symndx != 0) | |
14455 | { | |
14456 | r_symndx = toc_symndx; | |
14457 | rel->r_addend = toc_addend; | |
14458 | } | |
14459 | r_type = R_PPC64_TPREL16_LO; | |
14460 | rel->r_offset = offset + d_offset; | |
14461 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14462 | } | |
14463 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14464 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14465 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14466 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14467 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 14468 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 14469 | goto again; |
411e1bfb | 14470 | } |
411e1bfb AM |
14471 | break; |
14472 | ||
727fc41e | 14473 | case R_PPC64_TLSLD: |
37da22e5 | 14474 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 14475 | && rel + 1 < relend) |
727fc41e | 14476 | { |
b9f04fe0 | 14477 | unsigned int insn2; |
727fc41e AM |
14478 | bfd_vma offset = rel->r_offset; |
14479 | ||
23cedd1d AM |
14480 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14481 | { | |
14482 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14483 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14484 | break; | |
14485 | } | |
14486 | ||
14487 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14488 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14489 | ||
727fc41e AM |
14490 | if (toc_symndx) |
14491 | sec = local_sections[toc_symndx]; | |
14492 | for (r_symndx = 0; | |
14493 | r_symndx < symtab_hdr->sh_info; | |
14494 | r_symndx++) | |
14495 | if (local_sections[r_symndx] == sec) | |
14496 | break; | |
14497 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14498 | r_symndx = STN_UNDEF; |
727fc41e | 14499 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14500 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
14501 | rel->r_addend -= (local_syms[r_symndx].st_value |
14502 | + sec->output_offset | |
14503 | + sec->output_section->vma); | |
14504 | ||
14505 | r_type = R_PPC64_TPREL16_LO; | |
14506 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14507 | rel->r_offset = offset + d_offset; | |
14508 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14509 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14510 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 14511 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 14512 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 14513 | goto again; |
727fc41e AM |
14514 | } |
14515 | break; | |
14516 | ||
411e1bfb | 14517 | case R_PPC64_DTPMOD64: |
951fd09b AM |
14518 | if (rel + 1 < relend |
14519 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
14520 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 14521 | { |
951fd09b AM |
14522 | if ((tls_mask & TLS_GD) == 0) |
14523 | { | |
14524 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
14525 | if ((tls_mask & TLS_TPRELGD) != 0) | |
14526 | r_type = R_PPC64_TPREL64; | |
14527 | else | |
14528 | { | |
4ce794b7 | 14529 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
14530 | r_type = R_PPC64_NONE; |
14531 | } | |
14532 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14533 | } | |
14534 | } | |
14535 | else | |
14536 | { | |
14537 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 14538 | { |
4ce794b7 | 14539 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 14540 | r_type = R_PPC64_NONE; |
951fd09b | 14541 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 14542 | } |
411e1bfb AM |
14543 | } |
14544 | break; | |
14545 | ||
14546 | case R_PPC64_TPREL64: | |
951fd09b | 14547 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
14548 | { |
14549 | r_type = R_PPC64_NONE; | |
14550 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14551 | } | |
14552 | break; | |
52a82034 | 14553 | |
006589cf AM |
14554 | case R_PPC64_ENTRY: |
14555 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14556 | if (!bfd_link_pic (info) | |
14557 | && !info->traditional_format | |
14558 | && relocation + 0x80008000 <= 0xffffffff) | |
14559 | { | |
14560 | unsigned int insn1, insn2; | |
14561 | ||
14562 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14563 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14564 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14565 | && insn2 == ADD_R2_R2_R12) | |
14566 | { | |
95f0d0d2 | 14567 | bfd_put_32 (input_bfd, |
006589cf AM |
14568 | LIS_R2 + PPC_HA (relocation), |
14569 | contents + rel->r_offset); | |
95f0d0d2 | 14570 | bfd_put_32 (input_bfd, |
006589cf AM |
14571 | ADDI_R2_R2 + PPC_LO (relocation), |
14572 | contents + rel->r_offset + 4); | |
14573 | } | |
14574 | } | |
14575 | else | |
14576 | { | |
14577 | relocation -= (rel->r_offset | |
14578 | + input_section->output_offset | |
14579 | + input_section->output_section->vma); | |
14580 | if (relocation + 0x80008000 <= 0xffffffff) | |
14581 | { | |
14582 | unsigned int insn1, insn2; | |
14583 | ||
14584 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14585 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14586 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14587 | && insn2 == ADD_R2_R2_R12) | |
14588 | { | |
95f0d0d2 | 14589 | bfd_put_32 (input_bfd, |
006589cf AM |
14590 | ADDIS_R2_R12 + PPC_HA (relocation), |
14591 | contents + rel->r_offset); | |
95f0d0d2 | 14592 | bfd_put_32 (input_bfd, |
006589cf AM |
14593 | ADDI_R2_R2 + PPC_LO (relocation), |
14594 | contents + rel->r_offset + 4); | |
14595 | } | |
14596 | } | |
14597 | } | |
14598 | break; | |
14599 | ||
52a82034 AM |
14600 | case R_PPC64_REL16_HA: |
14601 | /* If we are generating a non-PIC executable, edit | |
14602 | . 0: addis 2,12,.TOC.-0b@ha | |
14603 | . addi 2,2,.TOC.-0b@l | |
14604 | used by ELFv2 global entry points to set up r2, to | |
14605 | . lis 2,.TOC.@ha | |
14606 | . addi 2,2,.TOC.@l | |
14607 | if .TOC. is in range. */ | |
0e1862bb | 14608 | if (!bfd_link_pic (info) |
810d4e75 | 14609 | && !info->traditional_format |
006589cf | 14610 | && !htab->opd_abi |
4f038ee5 | 14611 | && rel->r_addend == d_offset |
52a82034 AM |
14612 | && h != NULL && &h->elf == htab->elf.hgot |
14613 | && rel + 1 < relend | |
14614 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14615 | && rel[1].r_offset == rel->r_offset + 4 | |
14616 | && rel[1].r_addend == rel->r_addend + 4 | |
14617 | && relocation + 0x80008000 <= 0xffffffff) | |
14618 | { | |
14619 | unsigned int insn1, insn2; | |
14620 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
14621 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14622 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14623 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14624 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14625 | { |
14626 | r_type = R_PPC64_ADDR16_HA; | |
14627 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14628 | rel->r_addend -= d_offset; | |
14629 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14630 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14631 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14632 | } |
14633 | } | |
14634 | break; | |
411e1bfb AM |
14635 | } |
14636 | ||
14637 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14638 | insn = 0; |
b25116a9 AM |
14639 | max_br_offset = 1 << 25; |
14640 | addend = rel->r_addend; | |
bc30df16 | 14641 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14642 | switch (r_type) |
5bd4f169 AM |
14643 | { |
14644 | default: | |
65f38f15 | 14645 | break; |
5bd4f169 | 14646 | |
3b421ab3 AM |
14647 | case R_PPC64_TOCSAVE: |
14648 | if (relocation + addend == (rel->r_offset | |
14649 | + input_section->output_offset | |
14650 | + input_section->output_section->vma) | |
14651 | && tocsave_find (htab, NO_INSERT, | |
14652 | &local_syms, rel, input_bfd)) | |
14653 | { | |
14654 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14655 | if (insn == NOP | |
14656 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14657 | bfd_put_32 (input_bfd, |
14658 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14659 | contents + rel->r_offset); |
14660 | } | |
14661 | break; | |
14662 | ||
65f38f15 AM |
14663 | /* Branch taken prediction relocations. */ |
14664 | case R_PPC64_ADDR14_BRTAKEN: | |
14665 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14666 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14667 | /* Fall through. */ |
65f38f15 | 14668 | |
86c76c7b | 14669 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14670 | case R_PPC64_ADDR14_BRNTAKEN: |
14671 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14672 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14673 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14674 | /* Fall through. */ |
86c76c7b | 14675 | |
b25116a9 AM |
14676 | case R_PPC64_REL14: |
14677 | max_br_offset = 1 << 15; | |
1a0670f3 | 14678 | /* Fall through. */ |
5bd4f169 | 14679 | |
65f38f15 | 14680 | case R_PPC64_REL24: |
23cedd1d | 14681 | case R_PPC64_PLTCALL: |
ad8e1ba5 AM |
14682 | /* Calls to functions with a different TOC, such as calls to |
14683 | shared objects, need to alter the TOC pointer. This is | |
14684 | done using a linkage stub. A REL24 branching to these | |
14685 | linkage stubs needs to be followed by a nop, as the nop | |
14686 | will be replaced with an instruction to restore the TOC | |
14687 | base pointer. */ | |
8387904d | 14688 | fdh = h; |
b31867b6 AM |
14689 | if (h != NULL |
14690 | && h->oh != NULL | |
14691 | && h->oh->is_func_descriptor) | |
14692 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14693 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14694 | htab); | |
23cedd1d AM |
14695 | if (r_type == R_PPC64_PLTCALL |
14696 | && stub_entry != NULL | |
14697 | && (stub_entry->stub_type == ppc_stub_plt_call | |
14698 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
14699 | stub_entry = NULL; | |
14700 | ||
6abec6bc | 14701 | if (stub_entry != NULL |
ad8e1ba5 | 14702 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 14703 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
14704 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
14705 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 14706 | { |
b25116a9 | 14707 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14708 | |
6e1816be AM |
14709 | if (stub_entry->stub_type == ppc_stub_plt_call |
14710 | && !htab->opd_abi | |
14711 | && htab->params->plt_localentry0 != 0 | |
14712 | && is_elfv2_localentry0 (&h->elf)) | |
14713 | { | |
14714 | /* The function doesn't use or change r2. */ | |
14715 | can_plt_call = TRUE; | |
14716 | } | |
14717 | ||
f378ab09 | 14718 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14719 | branch and link followed by a nop. The nop is |
14720 | replaced by an insn to restore r2. */ | |
6e1816be | 14721 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14722 | { |
ba8ca3e7 AM |
14723 | unsigned long br; |
14724 | ||
14725 | br = bfd_get_32 (input_bfd, | |
14726 | contents + rel->r_offset); | |
14727 | if ((br & 1) != 0) | |
41bd81ab | 14728 | { |
ba8ca3e7 AM |
14729 | unsigned long nop; |
14730 | ||
14731 | nop = bfd_get_32 (input_bfd, | |
14732 | contents + rel->r_offset + 4); | |
23cedd1d AM |
14733 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
14734 | can_plt_call = TRUE; | |
14735 | else if (nop == NOP | |
14736 | || nop == CROR_151515 | |
14737 | || nop == CROR_313131) | |
a7f2871e | 14738 | { |
ba8ca3e7 AM |
14739 | if (h != NULL |
14740 | && (h == htab->tls_get_addr_fd | |
14741 | || h == htab->tls_get_addr) | |
7c9cf415 | 14742 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14743 | { |
14744 | /* Special stub used, leave nop alone. */ | |
14745 | } | |
14746 | else | |
a078d95a AM |
14747 | bfd_put_32 (input_bfd, |
14748 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14749 | contents + rel->r_offset + 4); |
14750 | can_plt_call = TRUE; | |
a7f2871e | 14751 | } |
41bd81ab | 14752 | } |
5bd4f169 | 14753 | } |
721956f4 | 14754 | |
ba8ca3e7 | 14755 | if (!can_plt_call && h != NULL) |
721956f4 | 14756 | { |
ba8ca3e7 AM |
14757 | const char *name = h->elf.root.root.string; |
14758 | ||
14759 | if (*name == '.') | |
14760 | ++name; | |
14761 | ||
14762 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14763 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14764 | { |
ba8ca3e7 AM |
14765 | /* Allow crt1 branch to go via a toc adjusting |
14766 | stub. Other calls that never return could do | |
14767 | the same, if we could detect such. */ | |
b25116a9 | 14768 | can_plt_call = TRUE; |
6ab189d5 | 14769 | } |
ba8ca3e7 AM |
14770 | } |
14771 | ||
14772 | if (!can_plt_call) | |
14773 | { | |
14774 | /* g++ as of 20130507 emits self-calls without a | |
14775 | following nop. This is arguably wrong since we | |
14776 | have conflicting information. On the one hand a | |
14777 | global symbol and on the other a local call | |
14778 | sequence, but don't error for this special case. | |
14779 | It isn't possible to cheaply verify we have | |
14780 | exactly such a call. Allow all calls to the same | |
14781 | section. */ | |
14782 | asection *code_sec = sec; | |
14783 | ||
14784 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14785 | { |
ba8ca3e7 AM |
14786 | bfd_vma off = (relocation + addend |
14787 | - sec->output_section->vma | |
14788 | - sec->output_offset); | |
bc30df16 | 14789 | |
ba8ca3e7 | 14790 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14791 | } |
ba8ca3e7 AM |
14792 | if (code_sec == input_section) |
14793 | can_plt_call = TRUE; | |
14794 | } | |
14795 | ||
14796 | if (!can_plt_call) | |
14797 | { | |
4805fc55 AM |
14798 | if (stub_entry->stub_type == ppc_stub_plt_call |
14799 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14800 | info->callbacks->einfo | |
695344c0 | 14801 | /* xgettext:c-format */ |
c1c8c1ef | 14802 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14803 | "recompile with -fPIC\n"), |
14804 | input_bfd, input_section, rel->r_offset, sym_name); | |
14805 | else | |
14806 | info->callbacks->einfo | |
695344c0 | 14807 | /* xgettext:c-format */ |
c1c8c1ef | 14808 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14809 | "(-mcmodel=small toc adjust stub)\n"), |
14810 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14811 | |
14812 | bfd_set_error (bfd_error_bad_value); | |
14813 | ret = FALSE; | |
721956f4 AM |
14814 | } |
14815 | ||
b25116a9 | 14816 | if (can_plt_call |
794e51c0 AM |
14817 | && (stub_entry->stub_type == ppc_stub_plt_call |
14818 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
14819 | unresolved_reloc = FALSE; |
14820 | } | |
14821 | ||
6abec6bc AM |
14822 | if ((stub_entry == NULL |
14823 | || stub_entry->stub_type == ppc_stub_long_branch | |
14824 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14825 | && get_opd_info (sec) != NULL) |
14826 | { | |
14827 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14828 | bfd_vma off = (relocation + addend |
14829 | - sec->output_section->vma | |
14830 | - sec->output_offset); | |
aef36ac1 | 14831 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14832 | if (dest != (bfd_vma) -1) |
14833 | { | |
14834 | relocation = dest; | |
14835 | addend = 0; | |
bc30df16 | 14836 | reloc_dest = DEST_OPD; |
8387904d AM |
14837 | } |
14838 | } | |
14839 | ||
b25116a9 AM |
14840 | /* If the branch is out of reach we ought to have a long |
14841 | branch stub. */ | |
14842 | from = (rel->r_offset | |
14843 | + input_section->output_offset | |
14844 | + input_section->output_section->vma); | |
14845 | ||
6911b7dc AM |
14846 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14847 | ? fdh->elf.other | |
14848 | : sym->st_other); | |
14849 | ||
6abec6bc AM |
14850 | if (stub_entry != NULL |
14851 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14852 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14853 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14854 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14855 | || (relocation + addend - from + max_br_offset | |
14856 | < 2 * max_br_offset))) | |
14857 | /* Don't use the stub if this branch is in range. */ | |
14858 | stub_entry = NULL; | |
b25116a9 AM |
14859 | |
14860 | if (stub_entry != NULL) | |
14861 | { | |
14862 | /* Munge up the value and addend so that we call the stub | |
14863 | rather than the procedure directly. */ | |
a4b6fadd AM |
14864 | asection *stub_sec = stub_entry->group->stub_sec; |
14865 | ||
14866 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14867 | relocation += (stub_sec->output_offset | |
14868 | + stub_sec->output_section->vma | |
14869 | + stub_sec->size - htab->sfpr->size | |
14870 | - htab->sfpr->output_offset | |
14871 | - htab->sfpr->output_section->vma); | |
14872 | else | |
14873 | relocation = (stub_entry->stub_offset | |
14874 | + stub_sec->output_offset | |
14875 | + stub_sec->output_section->vma); | |
b25116a9 | 14876 | addend = 0; |
bc30df16 | 14877 | reloc_dest = DEST_STUB; |
3b421ab3 | 14878 | |
954b63d4 | 14879 | if ((stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 AM |
14880 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) |
14881 | && (ALWAYS_EMIT_R2SAVE | |
14882 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14883 | && rel + 1 < relend |
14884 | && rel[1].r_offset == rel->r_offset + 4 | |
14885 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14886 | relocation += 4; | |
b25116a9 AM |
14887 | } |
14888 | ||
14889 | if (insn != 0) | |
14890 | { | |
794e51c0 | 14891 | if (is_isa_v2) |
721956f4 | 14892 | { |
b25116a9 AM |
14893 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14894 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14895 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14896 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14897 | insn |= 0x02 << 21; | |
14898 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14899 | insn |= 0x08 << 21; | |
14900 | else | |
14901 | break; | |
14902 | } | |
14903 | else | |
14904 | { | |
14905 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14906 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14907 | insn ^= 0x01 << 21; |
721956f4 | 14908 | } |
b25116a9 | 14909 | |
95f0d0d2 | 14910 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14911 | } |
e86ce104 | 14912 | |
06da1e8e AM |
14913 | /* NOP out calls to undefined weak functions. |
14914 | We can thus call a weak function without first | |
14915 | checking whether the function is defined. */ | |
b25116a9 | 14916 | else if (h != NULL |
039b3fef | 14917 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14918 | && h->elf.dynindx == -1 |
b25116a9 AM |
14919 | && r_type == R_PPC64_REL24 |
14920 | && relocation == 0 | |
4cc603a5 | 14921 | && addend == 0) |
e86ce104 | 14922 | { |
95f0d0d2 | 14923 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14924 | goto copy_reloc; |
e86ce104 | 14925 | } |
65f38f15 AM |
14926 | break; |
14927 | } | |
5bd4f169 | 14928 | |
65f38f15 | 14929 | /* Set `addend'. */ |
411e1bfb | 14930 | tls_type = 0; |
23cedd1d | 14931 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
14932 | switch (r_type) |
14933 | { | |
14934 | default: | |
cf97bcb0 AM |
14935 | /* xgettext:c-format */ |
14936 | _bfd_error_handler (_("%pB: %s unsupported"), | |
14937 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 14938 | |
65f38f15 | 14939 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14940 | ret = FALSE; |
c316a17c | 14941 | goto copy_reloc; |
5bd4f169 | 14942 | |
65f38f15 | 14943 | case R_PPC64_NONE: |
411e1bfb | 14944 | case R_PPC64_TLS: |
727fc41e AM |
14945 | case R_PPC64_TLSGD: |
14946 | case R_PPC64_TLSLD: | |
3b421ab3 | 14947 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14948 | case R_PPC64_GNU_VTINHERIT: |
14949 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14950 | case R_PPC64_ENTRY: |
c316a17c | 14951 | goto copy_reloc; |
5bd4f169 AM |
14952 | |
14953 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14954 | address in the GOT as relocation value instead of the | |
411e1bfb | 14955 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14956 | symbol and put the symbol value there. */ |
411e1bfb AM |
14957 | case R_PPC64_GOT_TLSGD16: |
14958 | case R_PPC64_GOT_TLSGD16_LO: | |
14959 | case R_PPC64_GOT_TLSGD16_HI: | |
14960 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14961 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14962 | goto dogot; |
14963 | ||
14964 | case R_PPC64_GOT_TLSLD16: | |
14965 | case R_PPC64_GOT_TLSLD16_LO: | |
14966 | case R_PPC64_GOT_TLSLD16_HI: | |
14967 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14968 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14969 | goto dogot; |
14970 | ||
14971 | case R_PPC64_GOT_TPREL16_DS: | |
14972 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14973 | case R_PPC64_GOT_TPREL16_HI: | |
14974 | case R_PPC64_GOT_TPREL16_HA: | |
14975 | tls_type = TLS_TLS | TLS_TPREL; | |
14976 | goto dogot; | |
14977 | ||
14978 | case R_PPC64_GOT_DTPREL16_DS: | |
14979 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14980 | case R_PPC64_GOT_DTPREL16_HI: | |
14981 | case R_PPC64_GOT_DTPREL16_HA: | |
14982 | tls_type = TLS_TLS | TLS_DTPREL; | |
14983 | goto dogot; | |
14984 | ||
65f38f15 AM |
14985 | case R_PPC64_GOT16: |
14986 | case R_PPC64_GOT16_LO: | |
14987 | case R_PPC64_GOT16_HI: | |
14988 | case R_PPC64_GOT16_HA: | |
14989 | case R_PPC64_GOT16_DS: | |
14990 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14991 | dogot: |
5bd4f169 AM |
14992 | { |
14993 | /* Relocation is to the entry for this symbol in the global | |
14994 | offset table. */ | |
e717da7e | 14995 | asection *got; |
d881513a | 14996 | bfd_vma *offp; |
5bd4f169 | 14997 | bfd_vma off; |
d881513a | 14998 | unsigned long indx = 0; |
927be08e | 14999 | struct got_entry *ent; |
65f38f15 | 15000 | |
d881513a AM |
15001 | if (tls_type == (TLS_TLS | TLS_LD) |
15002 | && (h == NULL | |
f5385ebf | 15003 | || !h->elf.def_dynamic)) |
927be08e | 15004 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 15005 | else |
5bd4f169 | 15006 | { |
d881513a AM |
15007 | if (h != NULL) |
15008 | { | |
f0158f44 AM |
15009 | if (!htab->elf.dynamic_sections_created |
15010 | || h->elf.dynindx == -1 | |
15011 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 15012 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
15013 | /* This is actually a static link, or it is a |
15014 | -Bsymbolic link and the symbol is defined | |
15015 | locally, or the symbol was forced to be local | |
15016 | because of a version file. */ | |
15017 | ; | |
15018 | else | |
15019 | { | |
039b3fef | 15020 | indx = h->elf.dynindx; |
d881513a AM |
15021 | unresolved_reloc = FALSE; |
15022 | } | |
039b3fef | 15023 | ent = h->elf.got.glist; |
d881513a | 15024 | } |
411e1bfb | 15025 | else |
5bd4f169 | 15026 | { |
d881513a AM |
15027 | if (local_got_ents == NULL) |
15028 | abort (); | |
15029 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15030 | } |
d881513a AM |
15031 | |
15032 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 15033 | if (ent->addend == orig_rel.r_addend |
e717da7e | 15034 | && ent->owner == input_bfd |
d881513a AM |
15035 | && ent->tls_type == tls_type) |
15036 | break; | |
5bd4f169 | 15037 | } |
411e1bfb | 15038 | |
927be08e AM |
15039 | if (ent == NULL) |
15040 | abort (); | |
15041 | if (ent->is_indirect) | |
15042 | ent = ent->got.ent; | |
15043 | offp = &ent->got.offset; | |
15044 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15045 | if (got == NULL) |
15046 | abort (); | |
15047 | ||
411e1bfb AM |
15048 | /* The offset must always be a multiple of 8. We use the |
15049 | least significant bit to record whether we have already | |
15050 | processed this entry. */ | |
d881513a | 15051 | off = *offp; |
411e1bfb AM |
15052 | if ((off & 1) != 0) |
15053 | off &= ~1; | |
5bd4f169 AM |
15054 | else |
15055 | { | |
411e1bfb AM |
15056 | /* Generate relocs for the dynamic linker, except in |
15057 | the case of TLSLD where we'll use one entry per | |
15058 | module. */ | |
25f23106 AM |
15059 | asection *relgot; |
15060 | bfd_boolean ifunc; | |
e717da7e | 15061 | |
d881513a | 15062 | *offp = off | 1; |
25f23106 AM |
15063 | relgot = NULL; |
15064 | ifunc = (h != NULL | |
15065 | ? h->elf.type == STT_GNU_IFUNC | |
15066 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15067 | if (ifunc) |
82e66161 AM |
15068 | { |
15069 | relgot = htab->elf.irelplt; | |
15070 | if (indx == 0) | |
15071 | htab->local_ifunc_resolver = 1; | |
15072 | else if (is_static_defined (&h->elf)) | |
15073 | htab->maybe_local_ifunc_resolver = 1; | |
15074 | } | |
f0158f44 AM |
15075 | else if (indx != 0 |
15076 | || (bfd_link_pic (info) | |
15077 | && (h == NULL | |
21d68fcd | 15078 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 15079 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
15080 | && !h->elf.def_dynamic)) |
15081 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
15082 | && bfd_link_executable (info) | |
15083 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15084 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15085 | if (relgot != NULL) |
5bd4f169 | 15086 | { |
e717da7e AM |
15087 | outrel.r_offset = (got->output_section->vma |
15088 | + got->output_offset | |
411e1bfb | 15089 | + off); |
4cc603a5 | 15090 | outrel.r_addend = addend; |
d881513a | 15091 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15092 | { |
411e1bfb | 15093 | outrel.r_addend = 0; |
e515b051 | 15094 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15095 | if (tls_type == (TLS_TLS | TLS_GD)) |
15096 | { | |
e717da7e AM |
15097 | loc = relgot->contents; |
15098 | loc += (relgot->reloc_count++ | |
d881513a AM |
15099 | * sizeof (Elf64_External_Rela)); |
15100 | bfd_elf64_swap_reloca_out (output_bfd, | |
15101 | &outrel, loc); | |
e515b051 | 15102 | outrel.r_offset += 8; |
4cc603a5 | 15103 | outrel.r_addend = addend; |
d881513a AM |
15104 | outrel.r_info |
15105 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15106 | } |
411e1bfb | 15107 | } |
951fd09b | 15108 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15109 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15110 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15111 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15112 | else if (indx != 0) |
15113 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15114 | else | |
81407a69 | 15115 | { |
25f23106 AM |
15116 | if (ifunc) |
15117 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15118 | else | |
15119 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15120 | |
15121 | /* Write the .got section contents for the sake | |
15122 | of prelink. */ | |
e717da7e | 15123 | loc = got->contents + off; |
23fbd6fa JJ |
15124 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15125 | loc); | |
81407a69 | 15126 | } |
81407a69 AM |
15127 | |
15128 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15129 | { |
15130 | outrel.r_addend += relocation; | |
15131 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15132 | { |
15133 | if (htab->elf.tls_sec == NULL) | |
15134 | outrel.r_addend = 0; | |
15135 | else | |
15136 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15137 | } | |
e515b051 | 15138 | } |
e717da7e AM |
15139 | loc = relgot->contents; |
15140 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15141 | * sizeof (Elf64_External_Rela)); |
15142 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15143 | } | |
15144 | ||
ad8e1ba5 | 15145 | /* Init the .got section contents here if we're not |
81407a69 | 15146 | emitting a reloc. */ |
d881513a | 15147 | else |
411e1bfb | 15148 | { |
4cc603a5 | 15149 | relocation += addend; |
f0158f44 | 15150 | if (tls_type != 0) |
411e1bfb | 15151 | { |
989f9879 AM |
15152 | if (htab->elf.tls_sec == NULL) |
15153 | relocation = 0; | |
15154 | else | |
15155 | { | |
f0158f44 AM |
15156 | if (tls_type & TLS_LD) |
15157 | relocation = 0; | |
15158 | else | |
15159 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15160 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15161 | relocation += DTP_OFFSET - TP_OFFSET; |
15162 | } | |
5bd4f169 | 15163 | |
f0158f44 | 15164 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15165 | { |
15166 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15167 | got->contents + off + 8); |
676ee2b5 | 15168 | relocation = 1; |
7b609f53 | 15169 | } |
411e1bfb AM |
15170 | } |
15171 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15172 | got->contents + off); |
5bd4f169 AM |
15173 | } |
15174 | } | |
15175 | ||
65f38f15 AM |
15176 | if (off >= (bfd_vma) -2) |
15177 | abort (); | |
15178 | ||
bf102f86 | 15179 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 15180 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 15181 | } |
65f38f15 AM |
15182 | break; |
15183 | ||
15184 | case R_PPC64_PLT16_HA: | |
15185 | case R_PPC64_PLT16_HI: | |
15186 | case R_PPC64_PLT16_LO: | |
08be3224 | 15187 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
15188 | case R_PPC64_PLT32: |
15189 | case R_PPC64_PLT64: | |
23cedd1d AM |
15190 | case R_PPC64_PLTSEQ: |
15191 | case R_PPC64_PLTCALL: | |
65f38f15 AM |
15192 | /* Relocation is to the entry for this symbol in the |
15193 | procedure linkage table. */ | |
23cedd1d | 15194 | unresolved_reloc = TRUE; |
cbf95972 AM |
15195 | { |
15196 | struct plt_entry **plt_list = NULL; | |
15197 | if (h != NULL) | |
15198 | plt_list = &h->elf.plt.plist; | |
15199 | else if (local_got_ents != NULL) | |
15200 | { | |
15201 | struct plt_entry **local_plt = (struct plt_entry **) | |
15202 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15203 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15204 | } |
15205 | if (plt_list) | |
15206 | { | |
15207 | struct plt_entry *ent; | |
65f38f15 | 15208 | |
cbf95972 AM |
15209 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15210 | if (ent->plt.offset != (bfd_vma) -1 | |
15211 | && ent->addend == orig_rel.r_addend) | |
15212 | { | |
15213 | asection *plt; | |
08be3224 | 15214 | bfd_vma got; |
cbf95972 AM |
15215 | |
15216 | plt = htab->elf.splt; | |
15217 | if (!htab->elf.dynamic_sections_created | |
15218 | || h == NULL | |
15219 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15220 | { |
15221 | if (h != NULL | |
15222 | ? h->elf.type == STT_GNU_IFUNC | |
15223 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15224 | plt = htab->elf.iplt; | |
15225 | else | |
15226 | plt = htab->pltlocal; | |
15227 | } | |
15228 | relocation = (plt->output_section->vma | |
15229 | + plt->output_offset | |
15230 | + ent->plt.offset); | |
08be3224 AM |
15231 | if (r_type == R_PPC64_PLT16_HA |
15232 | || r_type ==R_PPC64_PLT16_HI | |
15233 | || r_type ==R_PPC64_PLT16_LO | |
15234 | || r_type ==R_PPC64_PLT16_LO_DS) | |
15235 | { | |
15236 | got = (elf_gp (output_bfd) | |
15237 | + htab->sec_info[input_section->id].toc_off); | |
15238 | relocation -= got; | |
15239 | } | |
cbf95972 AM |
15240 | addend = 0; |
15241 | unresolved_reloc = FALSE; | |
15242 | break; | |
15243 | } | |
15244 | } | |
15245 | } | |
65f38f15 | 15246 | break; |
5bd4f169 | 15247 | |
0b13192e AM |
15248 | case R_PPC64_TOC: |
15249 | /* Relocation value is TOC base. */ | |
15250 | relocation = TOCstart; | |
cf35638d | 15251 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15252 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15253 | else if (unresolved_reloc) |
15254 | ; | |
6f20ed8a AM |
15255 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15256 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15257 | else |
15258 | unresolved_reloc = TRUE; | |
ab96bf03 | 15259 | goto dodyn; |
0b13192e | 15260 | |
5bd4f169 AM |
15261 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15262 | which is the address of the start of the TOC plus 0x8000. | |
15263 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15264 | in this order. */ | |
65f38f15 AM |
15265 | case R_PPC64_TOC16: |
15266 | case R_PPC64_TOC16_LO: | |
15267 | case R_PPC64_TOC16_HI: | |
15268 | case R_PPC64_TOC16_DS: | |
15269 | case R_PPC64_TOC16_LO_DS: | |
15270 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15271 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
15272 | break; |
15273 | ||
15274 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15275 | case R_PPC64_SECTOFF: |
15276 | case R_PPC64_SECTOFF_LO: | |
15277 | case R_PPC64_SECTOFF_HI: | |
15278 | case R_PPC64_SECTOFF_DS: | |
15279 | case R_PPC64_SECTOFF_LO_DS: | |
15280 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15281 | if (sec != NULL) |
65f38f15 | 15282 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15283 | break; |
15284 | ||
25f23106 AM |
15285 | case R_PPC64_REL16: |
15286 | case R_PPC64_REL16_LO: | |
15287 | case R_PPC64_REL16_HI: | |
15288 | case R_PPC64_REL16_HA: | |
a680de9a | 15289 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
15290 | break; |
15291 | ||
721956f4 AM |
15292 | case R_PPC64_REL14: |
15293 | case R_PPC64_REL14_BRNTAKEN: | |
15294 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
15295 | case R_PPC64_REL24: |
15296 | break; | |
15297 | ||
411e1bfb AM |
15298 | case R_PPC64_TPREL16: |
15299 | case R_PPC64_TPREL16_LO: | |
15300 | case R_PPC64_TPREL16_HI: | |
15301 | case R_PPC64_TPREL16_HA: | |
15302 | case R_PPC64_TPREL16_DS: | |
15303 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15304 | case R_PPC64_TPREL16_HIGH: |
15305 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15306 | case R_PPC64_TPREL16_HIGHER: |
15307 | case R_PPC64_TPREL16_HIGHERA: | |
15308 | case R_PPC64_TPREL16_HIGHEST: | |
15309 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
15310 | if (h != NULL |
15311 | && h->elf.root.type == bfd_link_hash_undefweak | |
15312 | && h->elf.dynindx == -1) | |
15313 | { | |
15314 | /* Make this relocation against an undefined weak symbol | |
15315 | resolve to zero. This is really just a tweak, since | |
15316 | code using weak externs ought to check that they are | |
15317 | defined before using them. */ | |
15318 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15319 | ||
95f0d0d2 | 15320 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15321 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15322 | if (insn != 0) | |
95f0d0d2 | 15323 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15324 | break; |
15325 | } | |
989f9879 AM |
15326 | if (htab->elf.tls_sec != NULL) |
15327 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15328 | /* The TPREL16 relocs shouldn't really be used in shared |
15329 | libs or with non-local symbols as that will result in | |
15330 | DT_TEXTREL being set, but support them anyway. */ | |
15331 | goto dodyn; | |
411e1bfb AM |
15332 | |
15333 | case R_PPC64_DTPREL16: | |
15334 | case R_PPC64_DTPREL16_LO: | |
15335 | case R_PPC64_DTPREL16_HI: | |
15336 | case R_PPC64_DTPREL16_HA: | |
15337 | case R_PPC64_DTPREL16_DS: | |
15338 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15339 | case R_PPC64_DTPREL16_HIGH: |
15340 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15341 | case R_PPC64_DTPREL16_HIGHER: |
15342 | case R_PPC64_DTPREL16_HIGHERA: | |
15343 | case R_PPC64_DTPREL16_HIGHEST: | |
15344 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
15345 | if (htab->elf.tls_sec != NULL) |
15346 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
15347 | break; |
15348 | ||
45965137 AM |
15349 | case R_PPC64_ADDR64_LOCAL: |
15350 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
15351 | ? h->elf.other | |
15352 | : sym->st_other); | |
15353 | break; | |
15354 | ||
e515b051 AM |
15355 | case R_PPC64_DTPMOD64: |
15356 | relocation = 1; | |
15357 | addend = 0; | |
15358 | goto dodyn; | |
15359 | ||
411e1bfb | 15360 | case R_PPC64_TPREL64: |
989f9879 AM |
15361 | if (htab->elf.tls_sec != NULL) |
15362 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
15363 | goto dodyn; |
15364 | ||
15365 | case R_PPC64_DTPREL64: | |
989f9879 AM |
15366 | if (htab->elf.tls_sec != NULL) |
15367 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 15368 | /* Fall through. */ |
411e1bfb | 15369 | |
65f38f15 AM |
15370 | /* Relocations that may need to be propagated if this is a |
15371 | dynamic object. */ | |
04c9666a | 15372 | case R_PPC64_REL30: |
65f38f15 AM |
15373 | case R_PPC64_REL32: |
15374 | case R_PPC64_REL64: | |
15375 | case R_PPC64_ADDR14: | |
15376 | case R_PPC64_ADDR14_BRNTAKEN: | |
15377 | case R_PPC64_ADDR14_BRTAKEN: | |
15378 | case R_PPC64_ADDR16: | |
15379 | case R_PPC64_ADDR16_DS: | |
15380 | case R_PPC64_ADDR16_HA: | |
15381 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
15382 | case R_PPC64_ADDR16_HIGH: |
15383 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15384 | case R_PPC64_ADDR16_HIGHER: |
15385 | case R_PPC64_ADDR16_HIGHERA: | |
15386 | case R_PPC64_ADDR16_HIGHEST: | |
15387 | case R_PPC64_ADDR16_HIGHESTA: | |
15388 | case R_PPC64_ADDR16_LO: | |
15389 | case R_PPC64_ADDR16_LO_DS: | |
15390 | case R_PPC64_ADDR24: | |
65f38f15 AM |
15391 | case R_PPC64_ADDR32: |
15392 | case R_PPC64_ADDR64: | |
15393 | case R_PPC64_UADDR16: | |
15394 | case R_PPC64_UADDR32: | |
15395 | case R_PPC64_UADDR64: | |
411e1bfb | 15396 | dodyn: |
5d1634d7 | 15397 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
15398 | break; |
15399 | ||
41bd81ab AM |
15400 | if (NO_OPD_RELOCS && is_opd) |
15401 | break; | |
15402 | ||
8a9e8e72 | 15403 | if (bfd_link_pic (info) |
b1b07054 AM |
15404 | ? ((h == NULL |
15405 | || h->dyn_relocs != NULL) | |
15406 | && ((h != NULL && pc_dynrelocs (h)) | |
15407 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
15408 | : (h != NULL |
15409 | ? h->dyn_relocs != NULL | |
d311bc8b | 15410 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 15411 | { |
b34976b6 | 15412 | bfd_boolean skip, relocate; |
65f38f15 | 15413 | asection *sreloc; |
1cf1f670 | 15414 | bfd_vma out_off; |
82e66161 | 15415 | long indx = 0; |
65f38f15 AM |
15416 | |
15417 | /* When generating a dynamic object, these relocations | |
15418 | are copied into the output file to be resolved at run | |
15419 | time. */ | |
15420 | ||
b34976b6 AM |
15421 | skip = FALSE; |
15422 | relocate = FALSE; | |
65f38f15 | 15423 | |
1cf1f670 AM |
15424 | out_off = _bfd_elf_section_offset (output_bfd, info, |
15425 | input_section, rel->r_offset); | |
15426 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 15427 | skip = TRUE; |
1cf1f670 | 15428 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 15429 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
15430 | out_off += (input_section->output_section->vma |
15431 | + input_section->output_offset); | |
15432 | outrel.r_offset = out_off; | |
411e1bfb | 15433 | outrel.r_addend = rel->r_addend; |
65f38f15 | 15434 | |
1cf1f670 AM |
15435 | /* Optimize unaligned reloc use. */ |
15436 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
15437 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
15438 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
15439 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
15440 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
15441 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
15442 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
15443 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
15444 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
15445 | ||
65f38f15 | 15446 | if (skip) |
0bb2d96a | 15447 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 15448 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
15449 | && !is_opd |
15450 | && r_type != R_PPC64_TOC) | |
14acf4dc | 15451 | { |
82e66161 AM |
15452 | indx = h->elf.dynindx; |
15453 | BFD_ASSERT (indx != -1); | |
15454 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 15455 | } |
65f38f15 AM |
15456 | else |
15457 | { | |
41bd81ab AM |
15458 | /* This symbol is local, or marked to become local, |
15459 | or this is an opd section reloc which must point | |
15460 | at a local function. */ | |
65f38f15 | 15461 | outrel.r_addend += relocation; |
e86ce104 | 15462 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 15463 | { |
3fad3c7c | 15464 | if (is_opd && h != NULL) |
afbe61cf AM |
15465 | { |
15466 | /* Lie about opd entries. This case occurs | |
15467 | when building shared libraries and we | |
15468 | reference a function in another shared | |
3fad3c7c AM |
15469 | lib. The same thing happens for a weak |
15470 | definition in an application that's | |
15471 | overridden by a strong definition in a | |
15472 | shared lib. (I believe this is a generic | |
15473 | bug in binutils handling of weak syms.) | |
15474 | In these cases we won't use the opd | |
1e2f5b6e | 15475 | entry in this lib. */ |
b34976b6 | 15476 | unresolved_reloc = FALSE; |
afbe61cf | 15477 | } |
25f23106 AM |
15478 | if (!is_opd |
15479 | && r_type == R_PPC64_ADDR64 | |
15480 | && (h != NULL | |
15481 | ? h->elf.type == STT_GNU_IFUNC | |
15482 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
15483 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15484 | else | |
15485 | { | |
15486 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 15487 | |
25f23106 AM |
15488 | /* We need to relocate .opd contents for ld.so. |
15489 | Prelink also wants simple and consistent rules | |
15490 | for relocs. This make all RELATIVE relocs have | |
15491 | *r_offset equal to r_addend. */ | |
15492 | relocate = TRUE; | |
15493 | } | |
65f38f15 AM |
15494 | } |
15495 | else | |
15496 | { | |
25f23106 AM |
15497 | if (h != NULL |
15498 | ? h->elf.type == STT_GNU_IFUNC | |
15499 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15500 | { | |
25f53a85 | 15501 | info->callbacks->einfo |
695344c0 | 15502 | /* xgettext:c-format */ |
174d0a74 | 15503 | (_("%H: %s for indirect " |
c1c8c1ef | 15504 | "function `%pT' unsupported\n"), |
25f53a85 | 15505 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
15506 | ppc64_elf_howto_table[r_type]->name, |
15507 | sym_name); | |
15508 | ret = FALSE; | |
15509 | } | |
cf35638d | 15510 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
15511 | ; |
15512 | else if (sec == NULL || sec->owner == NULL) | |
15513 | { | |
15514 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15515 | return FALSE; |
65f38f15 AM |
15516 | } |
15517 | else | |
15518 | { | |
15519 | asection *osec; | |
15520 | ||
15521 | osec = sec->output_section; | |
15522 | indx = elf_section_data (osec)->dynindx; | |
15523 | ||
74541ad4 AM |
15524 | if (indx == 0) |
15525 | { | |
15526 | if ((osec->flags & SEC_READONLY) == 0 | |
15527 | && htab->elf.data_index_section != NULL) | |
15528 | osec = htab->elf.data_index_section; | |
15529 | else | |
15530 | osec = htab->elf.text_index_section; | |
15531 | indx = elf_section_data (osec)->dynindx; | |
15532 | } | |
15533 | BFD_ASSERT (indx != 0); | |
15534 | ||
65f38f15 AM |
15535 | /* We are turning this relocation into one |
15536 | against a section symbol, so subtract out | |
15537 | the output section's address but not the | |
15538 | offset of the input section in the output | |
15539 | section. */ | |
15540 | outrel.r_addend -= osec->vma; | |
15541 | } | |
15542 | ||
15543 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
15544 | } | |
15545 | } | |
15546 | ||
15547 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
15548 | if (h != NULL |
15549 | ? h->elf.type == STT_GNU_IFUNC | |
15550 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
15551 | { |
15552 | sreloc = htab->elf.irelplt; | |
15553 | if (indx == 0) | |
15554 | htab->local_ifunc_resolver = 1; | |
15555 | else if (is_static_defined (&h->elf)) | |
15556 | htab->maybe_local_ifunc_resolver = 1; | |
15557 | } | |
65f38f15 AM |
15558 | if (sreloc == NULL) |
15559 | abort (); | |
15560 | ||
dfbb6ac9 AM |
15561 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
15562 | >= sreloc->size) | |
15563 | abort (); | |
947216bf AM |
15564 | loc = sreloc->contents; |
15565 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
15566 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
15567 | ||
15568 | /* If this reloc is against an external symbol, it will | |
15569 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15570 | anything now. However, for the sake of prelink ensure |
15571 | that the section contents are a known value. */ | |
65f38f15 | 15572 | if (! relocate) |
81407a69 AM |
15573 | { |
15574 | unresolved_reloc = FALSE; | |
15575 | /* The value chosen here is quite arbitrary as ld.so | |
15576 | ignores section contents except for the special | |
15577 | case of .opd where the contents might be accessed | |
15578 | before relocation. Choose zero, as that won't | |
15579 | cause reloc overflow. */ | |
15580 | relocation = 0; | |
15581 | addend = 0; | |
15582 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15583 | to improve backward compatibility with older | |
15584 | versions of ld. */ | |
15585 | if (r_type == R_PPC64_ADDR64) | |
15586 | addend = outrel.r_addend; | |
15587 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15588 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15589 | addend = outrel.r_offset; |
81407a69 | 15590 | } |
65f38f15 | 15591 | } |
5bd4f169 AM |
15592 | break; |
15593 | ||
65f38f15 AM |
15594 | case R_PPC64_COPY: |
15595 | case R_PPC64_GLOB_DAT: | |
15596 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15597 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15598 | case R_PPC64_RELATIVE: |
15599 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15600 | files. */ | |
ae9a127f | 15601 | /* Fall through. */ |
65f38f15 AM |
15602 | |
15603 | case R_PPC64_PLTGOT16: | |
15604 | case R_PPC64_PLTGOT16_DS: | |
15605 | case R_PPC64_PLTGOT16_HA: | |
15606 | case R_PPC64_PLTGOT16_HI: | |
15607 | case R_PPC64_PLTGOT16_LO: | |
15608 | case R_PPC64_PLTGOT16_LO_DS: | |
15609 | case R_PPC64_PLTREL32: | |
15610 | case R_PPC64_PLTREL64: | |
15611 | /* These ones haven't been implemented yet. */ | |
15612 | ||
25f53a85 | 15613 | info->callbacks->einfo |
695344c0 | 15614 | /* xgettext:c-format */ |
c1c8c1ef | 15615 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15616 | input_bfd, |
4ce794b7 | 15617 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15618 | |
15619 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15620 | ret = FALSE; |
c316a17c | 15621 | goto copy_reloc; |
65f38f15 | 15622 | } |
5bd4f169 | 15623 | |
67f0cbdb AM |
15624 | /* Multi-instruction sequences that access the TOC can be |
15625 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 15626 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
15627 | switch (r_type) |
15628 | { | |
15629 | default: | |
15630 | break; | |
15631 | ||
15632 | case R_PPC64_GOT_TLSLD16_HI: | |
15633 | case R_PPC64_GOT_TLSGD16_HI: | |
15634 | case R_PPC64_GOT_TPREL16_HI: | |
15635 | case R_PPC64_GOT_DTPREL16_HI: | |
15636 | case R_PPC64_GOT16_HI: | |
15637 | case R_PPC64_TOC16_HI: | |
15638 | /* These relocs would only be useful if building up an | |
15639 | offset to later add to r2, perhaps in an indexed | |
15640 | addressing mode instruction. Don't try to optimize. | |
15641 | Unfortunately, the possibility of someone building up an | |
15642 | offset like this or even with the HA relocs, means that | |
15643 | we need to check the high insn when optimizing the low | |
15644 | insn. */ | |
15645 | break; | |
15646 | ||
23cedd1d AM |
15647 | case R_PPC64_PLTCALL: |
15648 | if (unresolved_reloc) | |
15649 | { | |
15650 | /* No plt entry. Make this into a direct call. */ | |
15651 | bfd_byte *p = contents + rel->r_offset; | |
15652 | insn = bfd_get_32 (input_bfd, p); | |
15653 | insn &= 1; | |
15654 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
15655 | bfd_put_32 (input_bfd, NOP, p + 4); | |
15656 | unresolved_reloc = save_unresolved_reloc; | |
15657 | r_type = R_PPC64_REL24; | |
15658 | } | |
15659 | break; | |
15660 | ||
15661 | case R_PPC64_PLTSEQ: | |
15662 | if (unresolved_reloc) | |
15663 | { | |
15664 | unresolved_reloc = FALSE; | |
15665 | goto nop_it; | |
15666 | } | |
15667 | break; | |
15668 | ||
15669 | case R_PPC64_PLT16_HA: | |
15670 | if (unresolved_reloc) | |
15671 | { | |
15672 | unresolved_reloc = FALSE; | |
15673 | goto nop_it; | |
15674 | } | |
15675 | /* Fall through. */ | |
67f0cbdb AM |
15676 | case R_PPC64_GOT_TLSLD16_HA: |
15677 | case R_PPC64_GOT_TLSGD16_HA: | |
15678 | case R_PPC64_GOT_TPREL16_HA: | |
15679 | case R_PPC64_GOT_DTPREL16_HA: | |
15680 | case R_PPC64_GOT16_HA: | |
15681 | case R_PPC64_TOC16_HA: | |
98528052 | 15682 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15683 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 15684 | { |
23cedd1d AM |
15685 | bfd_byte *p; |
15686 | nop_it: | |
15687 | p = contents + (rel->r_offset & ~3); | |
98528052 | 15688 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 15689 | goto copy_reloc; |
98528052 | 15690 | } |
67f0cbdb AM |
15691 | break; |
15692 | ||
23cedd1d AM |
15693 | case R_PPC64_PLT16_LO: |
15694 | case R_PPC64_PLT16_LO_DS: | |
15695 | if (unresolved_reloc) | |
15696 | { | |
15697 | unresolved_reloc = FALSE; | |
15698 | goto nop_it; | |
15699 | } | |
15700 | /* Fall through. */ | |
67f0cbdb AM |
15701 | case R_PPC64_GOT_TLSLD16_LO: |
15702 | case R_PPC64_GOT_TLSGD16_LO: | |
15703 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15704 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15705 | case R_PPC64_GOT16_LO: | |
15706 | case R_PPC64_GOT16_LO_DS: | |
15707 | case R_PPC64_TOC16_LO: | |
15708 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15709 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15710 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15711 | { |
15712 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15713 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15714 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15715 | { | |
15716 | /* Transform addic to addi when we change reg. */ | |
15717 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15718 | insn |= (14u << 26) | (2 << 16); | |
15719 | } | |
15720 | else | |
67f0cbdb | 15721 | { |
98528052 AM |
15722 | insn &= ~(0x1f << 16); |
15723 | insn |= 2 << 16; | |
67f0cbdb | 15724 | } |
560c8763 | 15725 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15726 | } |
15727 | break; | |
9a23f96e AM |
15728 | |
15729 | case R_PPC64_TPREL16_HA: | |
15730 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15731 | { | |
15732 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15733 | insn = bfd_get_32 (input_bfd, p); | |
15734 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
15735 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
15736 | /* xgettext:c-format */ | |
15737 | info->callbacks->minfo | |
15738 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
15739 | input_bfd, input_section, rel->r_offset, |
15740 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 15741 | else |
d830549d AM |
15742 | { |
15743 | bfd_put_32 (input_bfd, NOP, p); | |
15744 | goto copy_reloc; | |
15745 | } | |
9a23f96e AM |
15746 | } |
15747 | break; | |
15748 | ||
15749 | case R_PPC64_TPREL16_LO: | |
15750 | case R_PPC64_TPREL16_LO_DS: | |
15751 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15752 | { | |
15753 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15754 | insn = bfd_get_32 (input_bfd, p); | |
15755 | insn &= ~(0x1f << 16); | |
15756 | insn |= 13 << 16; | |
15757 | bfd_put_32 (input_bfd, insn, p); | |
15758 | } | |
15759 | break; | |
67f0cbdb AM |
15760 | } |
15761 | ||
65f38f15 AM |
15762 | /* Do any further special processing. */ |
15763 | switch (r_type) | |
15764 | { | |
15765 | default: | |
15766 | break; | |
15767 | ||
25f23106 | 15768 | case R_PPC64_REL16_HA: |
a680de9a | 15769 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15770 | case R_PPC64_ADDR16_HA: |
15771 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15772 | case R_PPC64_ADDR16_HIGHERA: |
15773 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15774 | case R_PPC64_TOC16_HA: |
15775 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15776 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15777 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15778 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15779 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15780 | case R_PPC64_DTPREL16_HA: |
15781 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15782 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15783 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15784 | /* It's just possible that this symbol is a weak symbol |
15785 | that's not actually defined anywhere. In that case, | |
15786 | 'sec' would be NULL, and we should leave the symbol | |
15787 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15788 | if (sec == NULL) |
15789 | break; | |
1a0670f3 | 15790 | /* Fall through. */ |
5c5f6e17 AM |
15791 | |
15792 | case R_PPC64_GOT16_HA: | |
15793 | case R_PPC64_PLTGOT16_HA: | |
15794 | case R_PPC64_PLT16_HA: | |
15795 | case R_PPC64_GOT_TLSGD16_HA: | |
15796 | case R_PPC64_GOT_TLSLD16_HA: | |
15797 | case R_PPC64_GOT_TPREL16_HA: | |
15798 | case R_PPC64_GOT_DTPREL16_HA: | |
15799 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15800 | Bits 0:15 are not used. */ | |
15801 | addend += 0x8000; | |
65f38f15 AM |
15802 | break; |
15803 | ||
15804 | case R_PPC64_ADDR16_DS: | |
15805 | case R_PPC64_ADDR16_LO_DS: | |
15806 | case R_PPC64_GOT16_DS: | |
15807 | case R_PPC64_GOT16_LO_DS: | |
15808 | case R_PPC64_PLT16_LO_DS: | |
15809 | case R_PPC64_SECTOFF_DS: | |
15810 | case R_PPC64_SECTOFF_LO_DS: | |
15811 | case R_PPC64_TOC16_DS: | |
15812 | case R_PPC64_TOC16_LO_DS: | |
15813 | case R_PPC64_PLTGOT16_DS: | |
15814 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15815 | case R_PPC64_GOT_TPREL16_DS: |
15816 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15817 | case R_PPC64_GOT_DTPREL16_DS: | |
15818 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15819 | case R_PPC64_TPREL16_DS: | |
15820 | case R_PPC64_TPREL16_LO_DS: | |
15821 | case R_PPC64_DTPREL16_DS: | |
15822 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15823 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15824 | mask = 3; | |
a680de9a PB |
15825 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15826 | the value must be a multiple of 16. This is somewhat of | |
15827 | a hack, but the "correct" way to do this by defining _DQ | |
15828 | forms of all the _DS relocs bloats all reloc switches in | |
15829 | this file. It doesn't make much sense to use these | |
15830 | relocs in data, so testing the insn should be safe. */ | |
15831 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15832 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15833 | mask = 15; |
a680de9a PB |
15834 | relocation += addend; |
15835 | addend = insn & (mask ^ 3); | |
15836 | if ((relocation & mask) != 0) | |
65f38f15 | 15837 | { |
a680de9a | 15838 | relocation ^= relocation & mask; |
25f53a85 | 15839 | info->callbacks->einfo |
695344c0 | 15840 | /* xgettext:c-format */ |
174d0a74 | 15841 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 15842 | input_bfd, input_section, rel->r_offset, |
d830549d | 15843 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 15844 | mask + 1); |
65f38f15 | 15845 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15846 | ret = FALSE; |
c316a17c | 15847 | goto copy_reloc; |
65f38f15 AM |
15848 | } |
15849 | break; | |
5bd4f169 AM |
15850 | } |
15851 | ||
239e1f3a AM |
15852 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15853 | because such sections are not SEC_ALLOC and thus ld.so will | |
15854 | not process them. */ | |
d830549d | 15855 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 15856 | if (unresolved_reloc |
239e1f3a | 15857 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15858 | && h->elf.def_dynamic) |
15859 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15860 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15861 | { |
25f53a85 | 15862 | info->callbacks->einfo |
695344c0 | 15863 | /* xgettext:c-format */ |
c1c8c1ef | 15864 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 15865 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15866 | howto->name, |
039b3fef | 15867 | h->elf.root.root.string); |
b34976b6 | 15868 | ret = FALSE; |
9c07fe7c | 15869 | } |
5bd4f169 | 15870 | |
b80eed39 AM |
15871 | /* 16-bit fields in insns mostly have signed values, but a |
15872 | few insns have 16-bit unsigned values. Really, we should | |
15873 | have different reloc types. */ | |
15874 | if (howto->complain_on_overflow != complain_overflow_dont | |
15875 | && howto->dst_mask == 0xffff | |
15876 | && (input_section->flags & SEC_CODE) != 0) | |
15877 | { | |
15878 | enum complain_overflow complain = complain_overflow_signed; | |
15879 | ||
15880 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15881 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15882 | complain = complain_overflow_bitfield; | |
15883 | else if (howto->rightshift == 0 | |
15884 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15885 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15886 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15887 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15888 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15889 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15890 | complain = complain_overflow_unsigned; |
15891 | if (howto->complain_on_overflow != complain) | |
15892 | { | |
15893 | alt_howto = *howto; | |
15894 | alt_howto.complain_on_overflow = complain; | |
15895 | howto = &alt_howto; | |
15896 | } | |
15897 | } | |
15898 | ||
a680de9a PB |
15899 | if (r_type == R_PPC64_REL16DX_HA) |
15900 | { | |
15901 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15902 | if (rel->r_offset + 4 > input_section->size) | |
15903 | r = bfd_reloc_outofrange; | |
15904 | else | |
15905 | { | |
15906 | relocation += addend; | |
15907 | relocation -= (rel->r_offset | |
15908 | + input_section->output_offset | |
15909 | + input_section->output_section->vma); | |
3de43e7b | 15910 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
15911 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
15912 | insn &= ~0x1fffc1; | |
3de43e7b | 15913 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
15914 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15915 | r = bfd_reloc_ok; | |
3de43e7b | 15916 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
15917 | r = bfd_reloc_overflow; |
15918 | } | |
15919 | } | |
15920 | else | |
15921 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15922 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15923 | |
ef60b7ff | 15924 | if (r != bfd_reloc_ok) |
5bd4f169 | 15925 | { |
bc30df16 | 15926 | char *more_info = NULL; |
b80eed39 | 15927 | const char *reloc_name = howto->name; |
bc30df16 AM |
15928 | |
15929 | if (reloc_dest != DEST_NORMAL) | |
15930 | { | |
15931 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15932 | if (more_info != NULL) | |
15933 | { | |
15934 | strcpy (more_info, reloc_name); | |
15935 | strcat (more_info, (reloc_dest == DEST_OPD | |
15936 | ? " (OPD)" : " (stub)")); | |
15937 | reloc_name = more_info; | |
15938 | } | |
15939 | } | |
15940 | ||
cd27b276 | 15941 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15942 | { |
8131c122 AM |
15943 | /* On code like "if (foo) foo();" don't report overflow |
15944 | on a branch to zero when foo is undefined. */ | |
15945 | if (!warned | |
15946 | && (reloc_dest == DEST_STUB | |
15947 | || !(h != NULL | |
15948 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15949 | || h->elf.root.type == bfd_link_hash_undefined) | |
15950 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15951 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15952 | sym_name, reloc_name, | |
15953 | orig_rel.r_addend, | |
15954 | input_bfd, input_section, | |
15955 | rel->r_offset); | |
ef60b7ff AM |
15956 | } |
15957 | else | |
15958 | { | |
25f53a85 | 15959 | info->callbacks->einfo |
695344c0 | 15960 | /* xgettext:c-format */ |
c1c8c1ef | 15961 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 15962 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15963 | reloc_name, sym_name, (int) r); |
b34976b6 | 15964 | ret = FALSE; |
ef60b7ff | 15965 | } |
bc30df16 AM |
15966 | if (more_info != NULL) |
15967 | free (more_info); | |
5bd4f169 | 15968 | } |
c316a17c AM |
15969 | copy_reloc: |
15970 | if (wrel != rel) | |
15971 | *wrel = *rel; | |
15972 | } | |
15973 | ||
15974 | if (wrel != rel) | |
15975 | { | |
15976 | Elf_Internal_Shdr *rel_hdr; | |
15977 | size_t deleted = rel - wrel; | |
15978 | ||
15979 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15980 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15981 | if (rel_hdr->sh_size == 0) | |
15982 | { | |
15983 | /* It is too late to remove an empty reloc section. Leave | |
15984 | one NONE reloc. | |
15985 | ??? What is wrong with an empty section??? */ | |
15986 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15987 | deleted -= 1; | |
15988 | } | |
15989 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15990 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15991 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15992 | } |
15993 | ||
645ea6a9 AM |
15994 | /* If we're emitting relocations, then shortly after this function |
15995 | returns, reloc offsets and addends for this section will be | |
15996 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15997 | file rather than the input. Save a copy of the relocs for |
15998 | opd_entry_value. */ | |
0e1862bb | 15999 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
16000 | { |
16001 | bfd_size_type amt; | |
16002 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
16003 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
16004 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
16005 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
16006 | if (rel == NULL) |
16007 | return FALSE; | |
16008 | memcpy (rel, relocs, amt); | |
16009 | } | |
5bd4f169 AM |
16010 | return ret; |
16011 | } | |
16012 | ||
754021d0 AM |
16013 | /* Adjust the value of any local symbols in opd sections. */ |
16014 | ||
6e0b88f1 | 16015 | static int |
754021d0 AM |
16016 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16017 | const char *name ATTRIBUTE_UNUSED, | |
16018 | Elf_Internal_Sym *elfsym, | |
16019 | asection *input_sec, | |
16020 | struct elf_link_hash_entry *h) | |
16021 | { | |
74f0fb50 AM |
16022 | struct _opd_sec_data *opd; |
16023 | long adjust; | |
754021d0 AM |
16024 | bfd_vma value; |
16025 | ||
4025353c | 16026 | if (h != NULL) |
6e0b88f1 | 16027 | return 1; |
4025353c | 16028 | |
74f0fb50 AM |
16029 | opd = get_opd_info (input_sec); |
16030 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16031 | return 1; |
754021d0 AM |
16032 | |
16033 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16034 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16035 | value -= input_sec->output_section->vma; |
16036 | ||
51aecdc5 | 16037 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16038 | if (adjust == -1) |
6e0b88f1 AM |
16039 | return 2; |
16040 | ||
16041 | elfsym->st_value += adjust; | |
16042 | return 1; | |
754021d0 AM |
16043 | } |
16044 | ||
5bd4f169 AM |
16045 | /* Finish up dynamic symbol handling. We set the contents of various |
16046 | dynamic sections here. */ | |
16047 | ||
b34976b6 | 16048 | static bfd_boolean |
4ce794b7 AM |
16049 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16050 | struct bfd_link_info *info, | |
16051 | struct elf_link_hash_entry *h, | |
4aef7643 | 16052 | Elf_Internal_Sym *sym) |
5bd4f169 | 16053 | { |
65f38f15 | 16054 | struct ppc_link_hash_table *htab; |
8387904d | 16055 | struct plt_entry *ent; |
5bd4f169 | 16056 | |
65f38f15 | 16057 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16058 | if (htab == NULL) |
16059 | return FALSE; | |
5bd4f169 | 16060 | |
49c09209 AM |
16061 | if (!htab->opd_abi && !h->def_regular) |
16062 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16063 | if (ent->plt.offset != (bfd_vma) -1) | |
16064 | { | |
16065 | /* Mark the symbol as undefined, rather than as | |
16066 | defined in glink. Leave the value if there were | |
16067 | any relocations where pointer equality matters | |
16068 | (this is a clue for the dynamic linker, to make | |
16069 | function pointer comparisons work between an | |
16070 | application and shared library), otherwise set it | |
16071 | to zero. */ | |
16072 | sym->st_shndx = SHN_UNDEF; | |
16073 | if (!h->pointer_equality_needed) | |
16074 | sym->st_value = 0; | |
16075 | else if (!h->ref_regular_nonweak) | |
16076 | { | |
16077 | /* This breaks function pointer comparisons, but | |
16078 | that is better than breaking tests for a NULL | |
16079 | function pointer. */ | |
16080 | sym->st_value = 0; | |
16081 | } | |
16082 | break; | |
16083 | } | |
5bd4f169 | 16084 | |
f5385ebf | 16085 | if (h->needs_copy) |
5bd4f169 | 16086 | { |
65f38f15 | 16087 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16088 | Elf_Internal_Rela rela; |
5474d94f | 16089 | asection *srel; |
49c09209 | 16090 | bfd_byte *loc; |
5bd4f169 | 16091 | |
65f38f15 AM |
16092 | if (h->dynindx == -1 |
16093 | || (h->root.type != bfd_link_hash_defined | |
16094 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
16095 | || htab->elf.srelbss == NULL |
16096 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 16097 | abort (); |
5bd4f169 AM |
16098 | |
16099 | rela.r_offset = (h->root.u.def.value | |
16100 | + h->root.u.def.section->output_section->vma | |
16101 | + h->root.u.def.section->output_offset); | |
16102 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16103 | rela.r_addend = 0; | |
afbf7e8e | 16104 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16105 | srel = htab->elf.sreldynrelro; |
16106 | else | |
16107 | srel = htab->elf.srelbss; | |
16108 | loc = srel->contents; | |
16109 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16110 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16111 | } |
16112 | ||
b34976b6 | 16113 | return TRUE; |
5bd4f169 AM |
16114 | } |
16115 | ||
65f38f15 AM |
16116 | /* Used to decide how to sort relocs in an optimal manner for the |
16117 | dynamic linker, before writing them out. */ | |
16118 | ||
16119 | static enum elf_reloc_type_class | |
7e612e98 AM |
16120 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16121 | const asection *rel_sec, | |
16122 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16123 | { |
04c9666a | 16124 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16125 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16126 | ||
33e44f2e | 16127 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16128 | return reloc_class_ifunc; |
a33d1f77 | 16129 | |
4ce794b7 | 16130 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16131 | switch (r_type) |
65f38f15 AM |
16132 | { |
16133 | case R_PPC64_RELATIVE: | |
16134 | return reloc_class_relative; | |
16135 | case R_PPC64_JMP_SLOT: | |
16136 | return reloc_class_plt; | |
16137 | case R_PPC64_COPY: | |
16138 | return reloc_class_copy; | |
16139 | default: | |
16140 | return reloc_class_normal; | |
16141 | } | |
16142 | } | |
16143 | ||
5bd4f169 AM |
16144 | /* Finish up the dynamic sections. */ |
16145 | ||
b34976b6 | 16146 | static bfd_boolean |
4ce794b7 AM |
16147 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16148 | struct bfd_link_info *info) | |
5bd4f169 | 16149 | { |
65f38f15 AM |
16150 | struct ppc_link_hash_table *htab; |
16151 | bfd *dynobj; | |
5bd4f169 | 16152 | asection *sdyn; |
5bd4f169 | 16153 | |
65f38f15 | 16154 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16155 | if (htab == NULL) |
16156 | return FALSE; | |
16157 | ||
65f38f15 | 16158 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16159 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16160 | |
65f38f15 | 16161 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16162 | { |
5bd4f169 AM |
16163 | Elf64_External_Dyn *dyncon, *dynconend; |
16164 | ||
33e44f2e | 16165 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16166 | abort (); |
5bd4f169 AM |
16167 | |
16168 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16169 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16170 | for (; dyncon < dynconend; dyncon++) |
16171 | { | |
16172 | Elf_Internal_Dyn dyn; | |
19397422 | 16173 | asection *s; |
5bd4f169 AM |
16174 | |
16175 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16176 | ||
16177 | switch (dyn.d_tag) | |
16178 | { | |
65f38f15 AM |
16179 | default: |
16180 | continue; | |
5bd4f169 | 16181 | |
5d1634d7 | 16182 | case DT_PPC64_GLINK: |
4ce794b7 | 16183 | s = htab->glink; |
6348e046 | 16184 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16185 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16186 | of glink rather than the first entry point, which is | |
16187 | what ld.so needs, and now have a bigger stub to | |
16188 | support automatic multiple TOCs. */ | |
9e390558 | 16189 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16190 | break; |
16191 | ||
19397422 AM |
16192 | case DT_PPC64_OPD: |
16193 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16194 | if (s == NULL) |
16195 | continue; | |
16196 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16197 | break; |
16198 | ||
e8910a83 AM |
16199 | case DT_PPC64_OPT: |
16200 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
16201 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
16202 | if (htab->has_plt_localentry0) |
16203 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16204 | break; |
16205 | ||
19397422 AM |
16206 | case DT_PPC64_OPDSZ: |
16207 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16208 | if (s == NULL) |
16209 | continue; | |
eea6121a | 16210 | dyn.d_un.d_val = s->size; |
19397422 AM |
16211 | break; |
16212 | ||
65f38f15 | 16213 | case DT_PLTGOT: |
33e44f2e | 16214 | s = htab->elf.splt; |
6348e046 | 16215 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16216 | break; |
16217 | ||
16218 | case DT_JMPREL: | |
33e44f2e | 16219 | s = htab->elf.srelplt; |
6348e046 | 16220 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 16221 | break; |
5bd4f169 | 16222 | |
65f38f15 | 16223 | case DT_PLTRELSZ: |
33e44f2e | 16224 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 16225 | break; |
82e66161 AM |
16226 | |
16227 | case DT_TEXTREL: | |
16228 | if (htab->local_ifunc_resolver) | |
16229 | info->callbacks->einfo | |
16230 | (_("%X%P: text relocations and GNU indirect " | |
16231 | "functions will result in a segfault at runtime\n")); | |
16232 | else if (htab->maybe_local_ifunc_resolver) | |
16233 | info->callbacks->einfo | |
16234 | (_("%P: warning: text relocations and GNU indirect " | |
16235 | "functions may result in a segfault at runtime\n")); | |
16236 | continue; | |
5bd4f169 | 16237 | } |
5bd4f169 | 16238 | |
65f38f15 | 16239 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 16240 | } |
5bd4f169 AM |
16241 | } |
16242 | ||
6528b6eb AM |
16243 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
16244 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16245 | { |
16246 | /* Fill in the first entry in the global offset table. | |
16247 | We use it to hold the link-time TOCbase. */ | |
16248 | bfd_put_64 (output_bfd, | |
60ee0d4a | 16249 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 16250 | htab->elf.sgot->contents); |
5d1634d7 AM |
16251 | |
16252 | /* Set .got entry size. */ | |
33e44f2e | 16253 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
16254 | } |
16255 | ||
6528b6eb AM |
16256 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
16257 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16258 | { |
16259 | /* Set .plt entry size. */ | |
33e44f2e | 16260 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 16261 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
16262 | } |
16263 | ||
84f5d08e AM |
16264 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
16265 | brlt ourselves if emitrelocations. */ | |
16266 | if (htab->brlt != NULL | |
16267 | && htab->brlt->reloc_count != 0 | |
16268 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16269 | htab->brlt, | |
d4730f92 | 16270 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
16271 | elf_section_data (htab->brlt)->relocs, |
16272 | NULL)) | |
16273 | return FALSE; | |
16274 | ||
176a0d42 AM |
16275 | if (htab->glink != NULL |
16276 | && htab->glink->reloc_count != 0 | |
16277 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16278 | htab->glink, | |
d4730f92 | 16279 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
16280 | elf_section_data (htab->glink)->relocs, |
16281 | NULL)) | |
16282 | return FALSE; | |
16283 | ||
58d180e8 | 16284 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
16285 | && htab->glink_eh_frame->size != 0) |
16286 | { | |
16287 | bfd_vma val; | |
16288 | bfd_byte *p; | |
d4aaa2a0 | 16289 | struct map_stub *group; |
2e0ce1c8 | 16290 | size_t align = 4; |
da44f4e5 | 16291 | |
2e0ce1c8 AM |
16292 | p = htab->glink_eh_frame->contents; |
16293 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
d4aaa2a0 AM |
16294 | |
16295 | for (group = htab->group; group != NULL; group = group->next) | |
16296 | if (group->stub_sec != NULL) | |
da44f4e5 | 16297 | { |
da44f4e5 | 16298 | /* Offset to stub section. */ |
d4aaa2a0 AM |
16299 | val = (group->stub_sec->output_section->vma |
16300 | + group->stub_sec->output_offset); | |
da44f4e5 AM |
16301 | val -= (htab->glink_eh_frame->output_section->vma |
16302 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16303 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16304 | if (val + 0x80000000 > 0xffffffff) |
16305 | { | |
cf97bcb0 AM |
16306 | _bfd_error_handler |
16307 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
d4aaa2a0 | 16308 | group->stub_sec->name); |
da44f4e5 AM |
16309 | return FALSE; |
16310 | } | |
d4aaa2a0 AM |
16311 | bfd_put_32 (dynobj, val, p + 8); |
16312 | p += stub_eh_frame_size (group, align); | |
da44f4e5 AM |
16313 | } |
16314 | if (htab->glink != NULL && htab->glink->size != 0) | |
16315 | { | |
da44f4e5 AM |
16316 | /* Offset to .glink. */ |
16317 | val = (htab->glink->output_section->vma | |
16318 | + htab->glink->output_offset | |
16319 | + 8); | |
16320 | val -= (htab->glink_eh_frame->output_section->vma | |
16321 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16322 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16323 | if (val + 0x80000000 > 0xffffffff) |
16324 | { | |
cf97bcb0 AM |
16325 | _bfd_error_handler |
16326 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
da44f4e5 AM |
16327 | htab->glink->name); |
16328 | return FALSE; | |
16329 | } | |
d4aaa2a0 AM |
16330 | bfd_put_32 (dynobj, val, p + 8); |
16331 | p += (24 + align - 1) & -align; | |
da44f4e5 AM |
16332 | } |
16333 | ||
16334 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
16335 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
16336 | htab->glink_eh_frame, | |
16337 | htab->glink_eh_frame->contents)) | |
16338 | return FALSE; | |
16339 | } | |
58d180e8 | 16340 | |
e717da7e | 16341 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
16342 | since we didn't add them to DYNOBJ. We know dynobj is the first |
16343 | bfd. */ | |
c72f2fb2 | 16344 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
16345 | { |
16346 | asection *s; | |
7b53ace3 | 16347 | |
0c8d6e5c | 16348 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
16349 | continue; |
16350 | ||
e717da7e AM |
16351 | s = ppc64_elf_tdata (dynobj)->got; |
16352 | if (s != NULL | |
eea6121a | 16353 | && s->size != 0 |
e717da7e AM |
16354 | && s->output_section != bfd_abs_section_ptr |
16355 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16356 | s->contents, s->output_offset, | |
eea6121a | 16357 | s->size)) |
e717da7e AM |
16358 | return FALSE; |
16359 | s = ppc64_elf_tdata (dynobj)->relgot; | |
16360 | if (s != NULL | |
eea6121a | 16361 | && s->size != 0 |
e717da7e AM |
16362 | && s->output_section != bfd_abs_section_ptr |
16363 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16364 | s->contents, s->output_offset, | |
eea6121a | 16365 | s->size)) |
e717da7e AM |
16366 | return FALSE; |
16367 | } | |
f6c52c13 | 16368 | |
b34976b6 | 16369 | return TRUE; |
5bd4f169 AM |
16370 | } |
16371 | ||
5bd4f169 | 16372 | #include "elf64-target.h" |
7b8e7dad AM |
16373 | |
16374 | /* FreeBSD support */ | |
16375 | ||
16376 | #undef TARGET_LITTLE_SYM | |
16377 | #undef TARGET_LITTLE_NAME | |
16378 | ||
16379 | #undef TARGET_BIG_SYM | |
6d00b590 | 16380 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
16381 | #undef TARGET_BIG_NAME |
16382 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
16383 | ||
16384 | #undef ELF_OSABI | |
16385 | #define ELF_OSABI ELFOSABI_FREEBSD | |
16386 | ||
16387 | #undef elf64_bed | |
16388 | #define elf64_bed elf64_powerpc_fbsd_bed | |
16389 | ||
16390 | #include "elf64-target.h" |