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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 AM |
3043 | strncpy (data + 40, va_arg (ap, const char *), 16); |
3044 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
3045 | va_end (ap); | |
3046 | return elfcore_write_note (abfd, buf, bufsiz, | |
3047 | "CORE", note_type, data, sizeof (data)); | |
3048 | } | |
3049 | ||
3050 | case NT_PRSTATUS: | |
3051 | { | |
3052 | char data[504]; | |
3053 | va_list ap; | |
3054 | long pid; | |
3055 | int cursig; | |
3056 | const void *greg; | |
3057 | ||
3058 | va_start (ap, note_type); | |
3059 | memset (data, 0, 112); | |
3060 | pid = va_arg (ap, long); | |
3061 | bfd_put_32 (abfd, pid, data + 32); | |
3062 | cursig = va_arg (ap, int); | |
3063 | bfd_put_16 (abfd, cursig, data + 12); | |
3064 | greg = va_arg (ap, const void *); | |
3065 | memcpy (data + 112, greg, 384); | |
3066 | memset (data + 496, 0, 8); | |
3067 | va_end (ap); | |
3068 | return elfcore_write_note (abfd, buf, bufsiz, | |
3069 | "CORE", note_type, data, sizeof (data)); | |
3070 | } | |
3071 | } | |
3072 | } | |
3073 | ||
5d35169e AM |
3074 | /* Add extra PPC sections. */ |
3075 | ||
b35d266b | 3076 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 3077 | { |
07d6d2b8 AM |
3078 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3079 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3080 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
3081 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3082 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3083 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 3084 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
3085 | }; |
3086 | ||
7c8fe5c4 AM |
3087 | enum _ppc64_sec_type { |
3088 | sec_normal = 0, | |
3089 | sec_opd = 1, | |
3090 | sec_toc = 2 | |
3091 | }; | |
3092 | ||
f0abc2a1 AM |
3093 | struct _ppc64_elf_section_data |
3094 | { | |
3095 | struct bfd_elf_section_data elf; | |
411e1bfb | 3096 | |
f0abc2a1 AM |
3097 | union |
3098 | { | |
51aecdc5 AM |
3099 | /* An array with one entry for each opd function descriptor, |
3100 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3101 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3102 | struct _opd_sec_data |
3103 | { | |
3104 | /* Points to the function code section for local opd entries. */ | |
3105 | asection **func_sec; | |
3106 | ||
3107 | /* After editing .opd, adjust references to opd local syms. */ | |
3108 | long *adjust; | |
3109 | } opd; | |
7c8fe5c4 | 3110 | |
3a71aa26 AM |
3111 | /* An array for toc sections, indexed by offset/8. */ |
3112 | struct _toc_sec_data | |
3113 | { | |
3114 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3115 | unsigned *symndx; | |
3116 | ||
3117 | /* And the relocation addend. */ | |
3118 | bfd_vma *add; | |
3119 | } toc; | |
7c8fe5c4 AM |
3120 | } u; |
3121 | ||
3122 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3123 | |
7c8fe5c4 AM |
3124 | /* Flag set when small branches are detected. Used to |
3125 | select suitable defaults for the stub group size. */ | |
3126 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
3127 | |
3128 | /* Flag set when PLTCALL relocs are detected. */ | |
3129 | unsigned int has_pltcall:1; | |
f0abc2a1 AM |
3130 | }; |
3131 | ||
3132 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3133 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3134 | |
3135 | static bfd_boolean | |
4ce794b7 | 3136 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3137 | { |
f592407e AM |
3138 | if (!sec->used_by_bfd) |
3139 | { | |
3140 | struct _ppc64_elf_section_data *sdata; | |
3141 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3142 | |
f592407e AM |
3143 | sdata = bfd_zalloc (abfd, amt); |
3144 | if (sdata == NULL) | |
3145 | return FALSE; | |
3146 | sec->used_by_bfd = sdata; | |
3147 | } | |
f0abc2a1 AM |
3148 | |
3149 | return _bfd_elf_new_section_hook (abfd, sec); | |
3150 | } | |
4025353c | 3151 | |
74f0fb50 | 3152 | static struct _opd_sec_data * |
4025353c AM |
3153 | get_opd_info (asection * sec) |
3154 | { | |
3155 | if (sec != NULL | |
3156 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3157 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3158 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3159 | return NULL; |
3160 | } | |
90e3cdf2 JJ |
3161 | \f |
3162 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 3163 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 3164 | static asection *synthetic_opd; |
90e3cdf2 | 3165 | |
699733f6 | 3166 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3167 | |
3168 | static int | |
3169 | compare_symbols (const void *ap, const void *bp) | |
3170 | { | |
3171 | const asymbol *a = * (const asymbol **) ap; | |
3172 | const asymbol *b = * (const asymbol **) bp; | |
3173 | ||
699733f6 AM |
3174 | /* Section symbols first. */ |
3175 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3176 | return -1; |
699733f6 | 3177 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3178 | return 1; |
3179 | ||
699733f6 | 3180 | /* then .opd symbols. */ |
cd285db5 AM |
3181 | if (synthetic_opd != NULL) |
3182 | { | |
3183 | if (strcmp (a->section->name, ".opd") == 0 | |
3184 | && strcmp (b->section->name, ".opd") != 0) | |
3185 | return -1; | |
3186 | if (strcmp (a->section->name, ".opd") != 0 | |
3187 | && strcmp (b->section->name, ".opd") == 0) | |
3188 | return 1; | |
3189 | } | |
90e3cdf2 | 3190 | |
699733f6 | 3191 | /* then other code symbols. */ |
90e3cdf2 JJ |
3192 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3193 | == (SEC_CODE | SEC_ALLOC) | |
3194 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3195 | != (SEC_CODE | SEC_ALLOC)) | |
3196 | return -1; | |
3197 | ||
3198 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3199 | != (SEC_CODE | SEC_ALLOC) | |
3200 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3201 | == (SEC_CODE | SEC_ALLOC)) | |
3202 | return 1; | |
3203 | ||
3204 | if (synthetic_relocatable) | |
3205 | { | |
3206 | if (a->section->id < b->section->id) | |
3207 | return -1; | |
3208 | ||
3209 | if (a->section->id > b->section->id) | |
3210 | return 1; | |
3211 | } | |
3212 | ||
3213 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3214 | return -1; | |
3215 | ||
3216 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3217 | return 1; | |
3218 | ||
4d35a0aa AM |
3219 | /* For syms with the same value, prefer strong dynamic global function |
3220 | syms over other syms. */ | |
3221 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3222 | return -1; | |
3223 | ||
3224 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3225 | return 1; | |
3226 | ||
3227 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3228 | return -1; | |
3229 | ||
3230 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3231 | return 1; | |
3232 | ||
3233 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3234 | return -1; | |
3235 | ||
3236 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3237 | return 1; | |
3238 | ||
3239 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3240 | return -1; | |
3241 | ||
3242 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3243 | return 1; | |
3244 | ||
aaed6f5b | 3245 | return a > b; |
90e3cdf2 JJ |
3246 | } |
3247 | ||
699733f6 | 3248 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3249 | |
699733f6 | 3250 | static asymbol * |
7292b3ac | 3251 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3252 | { |
699733f6 | 3253 | long mid; |
90e3cdf2 | 3254 | |
7292b3ac | 3255 | if (id == (unsigned) -1) |
699733f6 AM |
3256 | { |
3257 | while (lo < hi) | |
3258 | { | |
3259 | mid = (lo + hi) >> 1; | |
3260 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3261 | lo = mid + 1; | |
3262 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3263 | hi = mid; | |
3264 | else | |
3265 | return syms[mid]; | |
3266 | } | |
3267 | } | |
3268 | else | |
3269 | { | |
3270 | while (lo < hi) | |
3271 | { | |
3272 | mid = (lo + hi) >> 1; | |
3273 | if (syms[mid]->section->id < id) | |
3274 | lo = mid + 1; | |
3275 | else if (syms[mid]->section->id > id) | |
3276 | hi = mid; | |
3277 | else if (syms[mid]->value < value) | |
3278 | lo = mid + 1; | |
3279 | else if (syms[mid]->value > value) | |
3280 | hi = mid; | |
3281 | else | |
3282 | return syms[mid]; | |
3283 | } | |
3284 | } | |
3285 | return NULL; | |
90e3cdf2 JJ |
3286 | } |
3287 | ||
468392fb AM |
3288 | static bfd_boolean |
3289 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3290 | { | |
3291 | bfd_vma vma = *(bfd_vma *) ptr; | |
3292 | return ((section->flags & SEC_ALLOC) != 0 | |
3293 | && section->vma <= vma | |
3294 | && vma < section->vma + section->size); | |
3295 | } | |
3296 | ||
699733f6 | 3297 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3298 | entry syms. Also generate @plt symbols for the glink branch table. |
3299 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3300 | |
3301 | static long | |
a7535cf3 AM |
3302 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3303 | long static_count, asymbol **static_syms, | |
3304 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3305 | asymbol **ret) |
90e3cdf2 JJ |
3306 | { |
3307 | asymbol *s; | |
0ccf57bd | 3308 | size_t i, j, count; |
90e3cdf2 | 3309 | char *names; |
0ccf57bd | 3310 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3311 | asection *opd = NULL; |
90e3cdf2 | 3312 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3313 | asymbol **syms; |
ee67d69a | 3314 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3315 | |
3316 | *ret = NULL; | |
3317 | ||
ee67d69a AM |
3318 | if (abi < 2) |
3319 | { | |
3320 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3321 | if (opd == NULL && abi == 1) | |
3322 | return 0; | |
3323 | } | |
90e3cdf2 | 3324 | |
a5259595 AM |
3325 | syms = NULL; |
3326 | codesecsym = 0; | |
3327 | codesecsymend = 0; | |
3328 | secsymend = 0; | |
3329 | opdsymend = 0; | |
3330 | symcount = 0; | |
3331 | if (opd != NULL) | |
c9727e01 | 3332 | { |
a5259595 AM |
3333 | symcount = static_count; |
3334 | if (!relocatable) | |
3335 | symcount += dyn_count; | |
3336 | if (symcount == 0) | |
3337 | return 0; | |
c9727e01 | 3338 | |
a5259595 AM |
3339 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3340 | if (syms == NULL) | |
3341 | return -1; | |
90e3cdf2 | 3342 | |
a5259595 AM |
3343 | if (!relocatable && static_count != 0 && dyn_count != 0) |
3344 | { | |
3345 | /* Use both symbol tables. */ | |
3346 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3347 | memcpy (syms + static_count, dyn_syms, | |
3348 | (dyn_count + 1) * sizeof (*syms)); | |
3349 | } | |
3350 | else if (!relocatable && static_count == 0) | |
3351 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3352 | else | |
3353 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 3354 | |
0ccf57bd AM |
3355 | /* Trim uninteresting symbols. Interesting symbols are section, |
3356 | function, and notype symbols. */ | |
3357 | for (i = 0, j = 0; i < symcount; ++i) | |
3358 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
3359 | | BSF_RELC | BSF_SRELC)) == 0) | |
3360 | syms[j++] = syms[i]; | |
3361 | symcount = j; | |
3362 | ||
a5259595 AM |
3363 | synthetic_relocatable = relocatable; |
3364 | synthetic_opd = opd; | |
3365 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 3366 | |
a5259595 AM |
3367 | if (!relocatable && symcount > 1) |
3368 | { | |
bfa5bd2a PA |
3369 | /* Trim duplicate syms, since we may have merged the normal |
3370 | and dynamic symbols. Actually, we only care about syms | |
3371 | that have different values, so trim any with the same | |
3372 | value. Don't consider ifunc and ifunc resolver symbols | |
3373 | duplicates however, because GDB wants to know whether a | |
3374 | text symbol is an ifunc resolver. */ | |
a5259595 | 3375 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
3376 | { |
3377 | const asymbol *s0 = syms[i - 1]; | |
3378 | const asymbol *s1 = syms[i]; | |
3379 | ||
3380 | if ((s0->value + s0->section->vma | |
3381 | != s1->value + s1->section->vma) | |
3382 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
3383 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
3384 | syms[j++] = syms[i]; | |
3385 | } | |
a5259595 AM |
3386 | symcount = j; |
3387 | } | |
699733f6 | 3388 | |
a5259595 AM |
3389 | i = 0; |
3390 | /* Note that here and in compare_symbols we can't compare opd and | |
3391 | sym->section directly. With separate debug info files, the | |
3392 | symbols will be extracted from the debug file while abfd passed | |
3393 | to this function is the real binary. */ | |
0ccf57bd | 3394 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
3395 | ++i; |
3396 | codesecsym = i; | |
3397 | ||
3398 | for (; i < symcount; ++i) | |
3399 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
3400 | | SEC_THREAD_LOCAL)) | |
3401 | != (SEC_CODE | SEC_ALLOC)) | |
3402 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3403 | break; | |
3404 | codesecsymend = i; | |
3405 | ||
3406 | for (; i < symcount; ++i) | |
3407 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3408 | break; | |
3409 | secsymend = i; | |
3410 | ||
3411 | for (; i < symcount; ++i) | |
3412 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
3413 | break; | |
3414 | opdsymend = i; | |
3415 | ||
3416 | for (; i < symcount; ++i) | |
3417 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3418 | != (SEC_CODE | SEC_ALLOC)) | |
3419 | break; | |
3420 | symcount = i; | |
3421 | } | |
c9727e01 | 3422 | count = 0; |
90e3cdf2 | 3423 | |
699733f6 | 3424 | if (relocatable) |
90e3cdf2 | 3425 | { |
699733f6 AM |
3426 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3427 | arelent *r; | |
3428 | size_t size; | |
0ccf57bd | 3429 | size_t relcount; |
90e3cdf2 | 3430 | |
468392fb AM |
3431 | if (opdsymend == secsymend) |
3432 | goto done; | |
3433 | ||
699733f6 | 3434 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3435 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3436 | if (relcount == 0) |
c9727e01 | 3437 | goto done; |
90e3cdf2 | 3438 | |
7356fed5 AM |
3439 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3440 | { | |
3441 | count = -1; | |
3442 | goto done; | |
3443 | } | |
3444 | ||
699733f6 | 3445 | size = 0; |
595da8c5 | 3446 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3447 | { |
3448 | asymbol *sym; | |
90e3cdf2 | 3449 | |
595da8c5 | 3450 | while (r < opd->relocation + relcount |
699733f6 AM |
3451 | && r->address < syms[i]->value + opd->vma) |
3452 | ++r; | |
90e3cdf2 | 3453 | |
595da8c5 | 3454 | if (r == opd->relocation + relcount) |
699733f6 | 3455 | break; |
90e3cdf2 | 3456 | |
699733f6 AM |
3457 | if (r->address != syms[i]->value + opd->vma) |
3458 | continue; | |
90e3cdf2 | 3459 | |
699733f6 AM |
3460 | if (r->howto->type != R_PPC64_ADDR64) |
3461 | continue; | |
90e3cdf2 | 3462 | |
699733f6 AM |
3463 | sym = *r->sym_ptr_ptr; |
3464 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3465 | sym->section->id, sym->value + r->addend)) | |
3466 | { | |
3467 | ++count; | |
3468 | size += sizeof (asymbol); | |
3469 | size += strlen (syms[i]->name) + 2; | |
3470 | } | |
3471 | } | |
90e3cdf2 | 3472 | |
c4b0b099 AM |
3473 | if (size == 0) |
3474 | goto done; | |
699733f6 AM |
3475 | s = *ret = bfd_malloc (size); |
3476 | if (s == NULL) | |
3477 | { | |
7356fed5 | 3478 | count = -1; |
c9727e01 | 3479 | goto done; |
699733f6 | 3480 | } |
90e3cdf2 | 3481 | |
699733f6 | 3482 | names = (char *) (s + count); |
90e3cdf2 | 3483 | |
595da8c5 | 3484 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3485 | { |
699733f6 | 3486 | asymbol *sym; |
90e3cdf2 | 3487 | |
595da8c5 | 3488 | while (r < opd->relocation + relcount |
699733f6 AM |
3489 | && r->address < syms[i]->value + opd->vma) |
3490 | ++r; | |
90e3cdf2 | 3491 | |
595da8c5 | 3492 | if (r == opd->relocation + relcount) |
699733f6 AM |
3493 | break; |
3494 | ||
3495 | if (r->address != syms[i]->value + opd->vma) | |
3496 | continue; | |
3497 | ||
3498 | if (r->howto->type != R_PPC64_ADDR64) | |
3499 | continue; | |
90e3cdf2 | 3500 | |
699733f6 AM |
3501 | sym = *r->sym_ptr_ptr; |
3502 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3503 | sym->section->id, sym->value + r->addend)) | |
3504 | { | |
3505 | size_t len; | |
3506 | ||
3507 | *s = *syms[i]; | |
6ba2a415 | 3508 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3509 | s->section = sym->section; |
3510 | s->value = sym->value + r->addend; | |
3511 | s->name = names; | |
3512 | *names++ = '.'; | |
3513 | len = strlen (syms[i]->name); | |
3514 | memcpy (names, syms[i]->name, len + 1); | |
3515 | names += len + 1; | |
6f610d07 UW |
3516 | /* Have udata.p point back to the original symbol this |
3517 | synthetic symbol was derived from. */ | |
3518 | s->udata.p = syms[i]; | |
699733f6 AM |
3519 | s++; |
3520 | } | |
3521 | } | |
3522 | } | |
3523 | else | |
90e3cdf2 | 3524 | { |
468392fb | 3525 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3526 | bfd_byte *contents = NULL; |
699733f6 | 3527 | size_t size; |
0ccf57bd | 3528 | size_t plt_count = 0; |
468392fb AM |
3529 | bfd_vma glink_vma = 0, resolv_vma = 0; |
3530 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3531 | arelent *p; | |
90e3cdf2 | 3532 | |
ee67d69a | 3533 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3534 | { |
c4b0b099 AM |
3535 | free_contents_and_exit_err: |
3536 | count = -1; | |
ee67d69a | 3537 | free_contents_and_exit: |
699733f6 | 3538 | if (contents) |
ee67d69a | 3539 | free (contents); |
c9727e01 | 3540 | goto done; |
699733f6 | 3541 | } |
90e3cdf2 | 3542 | |
699733f6 AM |
3543 | size = 0; |
3544 | for (i = secsymend; i < opdsymend; ++i) | |
3545 | { | |
3546 | bfd_vma ent; | |
90e3cdf2 | 3547 | |
5ef11c02 AM |
3548 | /* Ignore bogus symbols. */ |
3549 | if (syms[i]->value > opd->size - 8) | |
3550 | continue; | |
3551 | ||
699733f6 AM |
3552 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3553 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3554 | { | |
3555 | ++count; | |
3556 | size += sizeof (asymbol); | |
3557 | size += strlen (syms[i]->name) + 2; | |
3558 | } | |
3559 | } | |
90e3cdf2 | 3560 | |
468392fb | 3561 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3562 | if (dyn_count != 0 |
3563 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3564 | { |
3565 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3566 | size_t extdynsize; | |
3567 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3568 | ||
3569 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3570 | goto free_contents_and_exit_err; |
468392fb AM |
3571 | |
3572 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3573 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3574 | ||
3575 | extdyn = dynbuf; | |
3576 | extdynend = extdyn + dynamic->size; | |
3577 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3578 | { | |
3579 | Elf_Internal_Dyn dyn; | |
3580 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3581 | ||
3582 | if (dyn.d_tag == DT_NULL) | |
3583 | break; | |
3584 | ||
3585 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3586 | { | |
9e390558 AM |
3587 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
3588 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
3589 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
3590 | /* The .glink section usually does not survive the final |
3591 | link; search for the section (usually .text) where the | |
3592 | glink stubs now reside. */ | |
3593 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3594 | &glink_vma); | |
3595 | break; | |
3596 | } | |
3597 | } | |
3598 | ||
3599 | free (dynbuf); | |
3600 | } | |
3601 | ||
3602 | if (glink != NULL) | |
3603 | { | |
3604 | /* Determine __glink trampoline by reading the relative branch | |
3605 | from the first glink stub. */ | |
3606 | bfd_byte buf[4]; | |
b9e5796b AM |
3607 | unsigned int off = 0; |
3608 | ||
3609 | while (bfd_get_section_contents (abfd, glink, buf, | |
3610 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3611 | { |
3612 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3613 | insn ^= B_DOT; | |
3614 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3615 | { |
3616 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3617 | break; | |
3618 | } | |
3619 | off += 4; | |
3620 | if (off > 4) | |
3621 | break; | |
468392fb AM |
3622 | } |
3623 | ||
3624 | if (resolv_vma) | |
3625 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3626 | |
066ee829 AM |
3627 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3628 | if (relplt != NULL) | |
3629 | { | |
3630 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3631 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3632 | goto free_contents_and_exit_err; |
68ffbac6 | 3633 | |
066ee829 AM |
3634 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3635 | size += plt_count * sizeof (asymbol); | |
468392fb | 3636 | |
066ee829 AM |
3637 | p = relplt->relocation; |
3638 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3639 | { |
3640 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3641 | if (p->addend != 0) | |
3642 | size += sizeof ("+0x") - 1 + 16; | |
3643 | } | |
066ee829 | 3644 | } |
468392fb AM |
3645 | } |
3646 | ||
c4b0b099 AM |
3647 | if (size == 0) |
3648 | goto free_contents_and_exit; | |
699733f6 AM |
3649 | s = *ret = bfd_malloc (size); |
3650 | if (s == NULL) | |
c4b0b099 | 3651 | goto free_contents_and_exit_err; |
90e3cdf2 | 3652 | |
468392fb | 3653 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3654 | |
699733f6 | 3655 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3656 | { |
699733f6 | 3657 | bfd_vma ent; |
90e3cdf2 | 3658 | |
5ef11c02 AM |
3659 | if (syms[i]->value > opd->size - 8) |
3660 | continue; | |
3661 | ||
699733f6 AM |
3662 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3663 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3664 | { |
0ccf57bd | 3665 | size_t lo, hi; |
699733f6 | 3666 | size_t len; |
c9727e01 | 3667 | asection *sec = abfd->sections; |
90e3cdf2 | 3668 | |
699733f6 AM |
3669 | *s = *syms[i]; |
3670 | lo = codesecsym; | |
3671 | hi = codesecsymend; | |
3672 | while (lo < hi) | |
3673 | { | |
0ccf57bd | 3674 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
3675 | if (syms[mid]->section->vma < ent) |
3676 | lo = mid + 1; | |
3677 | else if (syms[mid]->section->vma > ent) | |
3678 | hi = mid; | |
3679 | else | |
c9727e01 AM |
3680 | { |
3681 | sec = syms[mid]->section; | |
3682 | break; | |
3683 | } | |
699733f6 AM |
3684 | } |
3685 | ||
c9727e01 | 3686 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3687 | sec = syms[lo - 1]->section; |
699733f6 AM |
3688 | |
3689 | for (; sec != NULL; sec = sec->next) | |
3690 | { | |
3691 | if (sec->vma > ent) | |
3692 | break; | |
63524580 JK |
3693 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3694 | info file. */ | |
3695 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3696 | break; |
3697 | if ((sec->flags & SEC_CODE) != 0) | |
3698 | s->section = sec; | |
3699 | } | |
6ba2a415 | 3700 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3701 | s->value = ent - s->section->vma; |
3702 | s->name = names; | |
3703 | *names++ = '.'; | |
3704 | len = strlen (syms[i]->name); | |
3705 | memcpy (names, syms[i]->name, len + 1); | |
3706 | names += len + 1; | |
6f610d07 UW |
3707 | /* Have udata.p point back to the original symbol this |
3708 | synthetic symbol was derived from. */ | |
3709 | s->udata.p = syms[i]; | |
699733f6 | 3710 | s++; |
90e3cdf2 | 3711 | } |
90e3cdf2 | 3712 | } |
699733f6 | 3713 | free (contents); |
468392fb AM |
3714 | |
3715 | if (glink != NULL && relplt != NULL) | |
3716 | { | |
3717 | if (resolv_vma) | |
3718 | { | |
3719 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3720 | memset (s, 0, sizeof *s); |
468392fb | 3721 | s->the_bfd = abfd; |
6ba2a415 | 3722 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3723 | s->section = glink; |
3724 | s->value = resolv_vma - glink->vma; | |
3725 | s->name = names; | |
3726 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3727 | names += sizeof ("__glink_PLTresolve"); | |
3728 | s++; | |
3729 | count++; | |
3730 | } | |
3731 | ||
3732 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3733 | stub rather than on the glink branch table entry. The | |
3734 | objdump disassembler would then use a sensible symbol | |
3735 | name on plt calls. The difficulty in doing so is | |
3736 | a) finding the stubs, and, | |
3737 | b) matching stubs against plt entries, and, | |
3738 | c) there can be multiple stubs for a given plt entry. | |
3739 | ||
3740 | Solving (a) could be done by code scanning, but older | |
3741 | ppc64 binaries used different stubs to current code. | |
3742 | (b) is the tricky one since you need to known the toc | |
3743 | pointer for at least one function that uses a pic stub to | |
3744 | be able to calculate the plt address referenced. | |
3745 | (c) means gdb would need to set multiple breakpoints (or | |
3746 | find the glink branch itself) when setting breakpoints | |
3747 | for pending shared library loads. */ | |
3748 | p = relplt->relocation; | |
3749 | for (i = 0; i < plt_count; i++, p++) | |
3750 | { | |
3751 | size_t len; | |
3752 | ||
3753 | *s = **p->sym_ptr_ptr; | |
3754 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3755 | we are defining a symbol, ensure one of them is set. */ | |
3756 | if ((s->flags & BSF_LOCAL) == 0) | |
3757 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3758 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3759 | s->section = glink; |
3760 | s->value = glink_vma - glink->vma; | |
3761 | s->name = names; | |
3762 | s->udata.p = NULL; | |
3763 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3764 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3765 | names += len; | |
e054468f AM |
3766 | if (p->addend != 0) |
3767 | { | |
3768 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3769 | names += sizeof ("+0x") - 1; | |
3770 | bfd_sprintf_vma (abfd, names, p->addend); | |
3771 | names += strlen (names); | |
3772 | } | |
468392fb AM |
3773 | memcpy (names, "@plt", sizeof ("@plt")); |
3774 | names += sizeof ("@plt"); | |
3775 | s++; | |
b9e5796b AM |
3776 | if (abi < 2) |
3777 | { | |
3778 | glink_vma += 8; | |
3779 | if (i >= 0x8000) | |
3780 | glink_vma += 4; | |
3781 | } | |
3782 | else | |
468392fb AM |
3783 | glink_vma += 4; |
3784 | } | |
3785 | count += plt_count; | |
3786 | } | |
90e3cdf2 JJ |
3787 | } |
3788 | ||
c9727e01 | 3789 | done: |
a7535cf3 | 3790 | free (syms); |
90e3cdf2 JJ |
3791 | return count; |
3792 | } | |
5bd4f169 | 3793 | \f |
65f38f15 AM |
3794 | /* The following functions are specific to the ELF linker, while |
3795 | functions above are used generally. Those named ppc64_elf_* are | |
3796 | called by the main ELF linker code. They appear in this file more | |
3797 | or less in the order in which they are called. eg. | |
3798 | ppc64_elf_check_relocs is called early in the link process, | |
3799 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3800 | called. |
3801 | ||
3802 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3803 | functions have both a function code symbol and a function descriptor | |
3804 | symbol. A call to foo in a relocatable object file looks like: | |
3805 | ||
3806 | . .text | |
3807 | . x: | |
3808 | . bl .foo | |
3809 | . nop | |
3810 | ||
3811 | The function definition in another object file might be: | |
3812 | ||
3813 | . .section .opd | |
3814 | . foo: .quad .foo | |
3815 | . .quad .TOC.@tocbase | |
3816 | . .quad 0 | |
3817 | . | |
3818 | . .text | |
3819 | . .foo: blr | |
3820 | ||
3821 | When the linker resolves the call during a static link, the branch | |
3822 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3823 | If the function definition is in a shared library, things are a little | |
3824 | different: The call goes via a plt call stub, the opd information gets | |
3825 | copied to the plt, and the linker patches the nop. | |
3826 | ||
3827 | . x: | |
3828 | . bl .foo_stub | |
3829 | . ld 2,40(1) | |
3830 | . | |
3831 | . | |
3832 | . .foo_stub: | |
71a39c98 AM |
3833 | . std 2,40(1) # in practice, the call stub |
3834 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3835 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3836 | . ld 12,0(11) | |
3837 | . ld 2,8(11) | |
3838 | . mtctr 12 | |
3839 | . ld 11,16(11) | |
e86ce104 AM |
3840 | . bctr |
3841 | . | |
3842 | . .section .plt | |
3843 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3844 | ||
3845 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3846 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3847 | copying. | |
3848 | ||
3849 | What are the difficulties here? Well, firstly, the relocations | |
3850 | examined by the linker in check_relocs are against the function code | |
3851 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3852 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3853 | to carefully copy dynamic link information from one symbol to the other. | |
3854 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3855 | symbol as is normal for most other backends. We need foo dynamic | |
3856 | instead, at least for an application final link. However, when | |
3857 | creating a shared library containing foo, we need to have both symbols | |
3858 | dynamic so that references to .foo are satisfied during the early | |
3859 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3860 | definition from some other object, eg. a static library. |
3861 | ||
3862 | Update: As of August 2004, we support a new convention. Function | |
3863 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3864 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3865 | |
7c8bbca5 AM |
3866 | /* Of those relocs that might be copied as dynamic relocs, this |
3867 | function selects those that must be copied when linking a shared | |
3868 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 3869 | |
1d483afe AM |
3870 | static int |
3871 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3872 | enum elf_ppc64_reloc_type r_type) | |
3873 | { | |
3874 | switch (r_type) | |
3875 | { | |
3876 | default: | |
7c8bbca5 AM |
3877 | /* Only relative relocs can be resolved when the object load |
3878 | address isn't fixed. DTPREL64 is excluded because the | |
3879 | dynamic linker needs to differentiate global dynamic from | |
3880 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
3881 | return 1; |
3882 | ||
3883 | case R_PPC64_REL32: | |
3884 | case R_PPC64_REL64: | |
3885 | case R_PPC64_REL30: | |
3886 | return 0; | |
3887 | ||
3888 | case R_PPC64_TPREL16: | |
3889 | case R_PPC64_TPREL16_LO: | |
3890 | case R_PPC64_TPREL16_HI: | |
3891 | case R_PPC64_TPREL16_HA: | |
3892 | case R_PPC64_TPREL16_DS: | |
3893 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3894 | case R_PPC64_TPREL16_HIGH: |
3895 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3896 | case R_PPC64_TPREL16_HIGHER: |
3897 | case R_PPC64_TPREL16_HIGHERA: | |
3898 | case R_PPC64_TPREL16_HIGHEST: | |
3899 | case R_PPC64_TPREL16_HIGHESTA: | |
3900 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
3901 | /* These relocations are relative but in a shared library the |
3902 | linker doesn't know the thread pointer base. */ | |
3903 | return bfd_link_dll (info); | |
1d483afe AM |
3904 | } |
3905 | } | |
65f38f15 | 3906 | |
f4656909 AM |
3907 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3908 | copying dynamic variables from a shared lib into an app's dynbss | |
3909 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3910 | shared lib. With code that gcc generates, it's vital that this be |
3911 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3912 | the address of a function descriptor, which resides in the .opd | |
3913 | section. gcc uses the descriptor directly rather than going via the | |
3914 | GOT as some other ABI's do, which means that initialized function | |
3915 | pointers must reference the descriptor. Thus, a function pointer | |
3916 | initialized to the address of a function in a shared library will | |
3917 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3918 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3919 | presents a problem as a plt entry for that function is also |
3920 | initialized from the function descriptor symbol and the copy reloc | |
3921 | may not be initialized first. */ | |
a23b6845 | 3922 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3923 | |
721956f4 | 3924 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3925 | string. */ |
3926 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3927 | |
3928 | /* Linker stubs. | |
3929 | ppc_stub_long_branch: | |
3930 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3931 | destination, but a 24 bit branch in a stub section will reach. | |
3932 | . b dest | |
3933 | ||
3934 | ppc_stub_plt_branch: | |
3935 | Similar to the above, but a 24 bit branch in the stub section won't | |
3936 | reach its destination. | |
71a39c98 AM |
3937 | . addis %r11,%r2,xxx@toc@ha |
3938 | . ld %r12,xxx@toc@l(%r11) | |
3939 | . mtctr %r12 | |
721956f4 AM |
3940 | . bctr |
3941 | ||
3942 | ppc_stub_plt_call: | |
2c66dc6c AM |
3943 | Used to call a function in a shared library. If it so happens that |
3944 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3945 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3946 | . std %r2,40(%r1) |
71a39c98 AM |
3947 | . addis %r11,%r2,xxx@toc@ha |
3948 | . ld %r12,xxx+0@toc@l(%r11) | |
3949 | . mtctr %r12 | |
3950 | . ld %r2,xxx+8@toc@l(%r11) | |
3951 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3952 | . bctr |
ad8e1ba5 AM |
3953 | |
3954 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3955 | code to adjust the value and save r2 to support multiple toc sections. | |
3956 | A ppc_stub_long_branch with an r2 offset looks like: | |
3957 | . std %r2,40(%r1) | |
3958 | . addis %r2,%r2,off@ha | |
3959 | . addi %r2,%r2,off@l | |
3960 | . b dest | |
3961 | ||
3962 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3963 | . std %r2,40(%r1) | |
71a39c98 AM |
3964 | . addis %r11,%r2,xxx@toc@ha |
3965 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3966 | . addis %r2,%r2,off@ha |
3967 | . addi %r2,%r2,off@l | |
71a39c98 | 3968 | . mtctr %r12 |
ad8e1ba5 | 3969 | . bctr |
ac2df442 AM |
3970 | |
3971 | In cases where the "addis" instruction would add zero, the "addis" is | |
3972 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3973 | */ |
3974 | ||
3975 | enum ppc_stub_type { | |
3976 | ppc_stub_none, | |
3977 | ppc_stub_long_branch, | |
ad8e1ba5 | 3978 | ppc_stub_long_branch_r2off, |
721956f4 | 3979 | ppc_stub_plt_branch, |
ad8e1ba5 | 3980 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3981 | ppc_stub_plt_call, |
7341d5e2 | 3982 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3983 | ppc_stub_global_entry, |
3984 | ppc_stub_save_res | |
721956f4 AM |
3985 | }; |
3986 | ||
6f20ed8a AM |
3987 | /* Information on stub grouping. */ |
3988 | struct map_stub | |
3989 | { | |
3990 | /* The stub section. */ | |
3991 | asection *stub_sec; | |
3992 | /* This is the section to which stubs in the group will be attached. */ | |
3993 | asection *link_sec; | |
a4b6fadd AM |
3994 | /* Next group. */ |
3995 | struct map_stub *next; | |
3996 | /* Whether to emit a copy of register save/restore functions in this | |
3997 | group. */ | |
3998 | int needs_save_res; | |
d4aaa2a0 AM |
3999 | /* The offset of the __tls_get_addr_opt plt stub bctrl in this group, |
4000 | or -1u if no such stub with bctrl exists. */ | |
4001 | unsigned int tls_get_addr_opt_bctrl; | |
6f20ed8a AM |
4002 | }; |
4003 | ||
721956f4 AM |
4004 | struct ppc_stub_hash_entry { |
4005 | ||
4006 | /* Base hash table entry structure. */ | |
4007 | struct bfd_hash_entry root; | |
4008 | ||
ad8e1ba5 AM |
4009 | enum ppc_stub_type stub_type; |
4010 | ||
6f20ed8a AM |
4011 | /* Group information. */ |
4012 | struct map_stub *group; | |
721956f4 AM |
4013 | |
4014 | /* Offset within stub_sec of the beginning of this stub. */ | |
4015 | bfd_vma stub_offset; | |
4016 | ||
4017 | /* Given the symbol's value and its section we can determine its final | |
4018 | value when building the stubs (so the stub knows where to jump. */ | |
4019 | bfd_vma target_value; | |
4020 | asection *target_section; | |
4021 | ||
721956f4 AM |
4022 | /* The symbol table entry, if any, that this was derived from. */ |
4023 | struct ppc_link_hash_entry *h; | |
e054468f | 4024 | struct plt_entry *plt_ent; |
721956f4 | 4025 | |
2d7ad24e AM |
4026 | /* Symbol type. */ |
4027 | unsigned char symtype; | |
4028 | ||
6911b7dc AM |
4029 | /* Symbol st_other. */ |
4030 | unsigned char other; | |
721956f4 AM |
4031 | }; |
4032 | ||
4033 | struct ppc_branch_hash_entry { | |
4034 | ||
4035 | /* Base hash table entry structure. */ | |
4036 | struct bfd_hash_entry root; | |
4037 | ||
c456f082 | 4038 | /* Offset within branch lookup table. */ |
721956f4 AM |
4039 | unsigned int offset; |
4040 | ||
4041 | /* Generation marker. */ | |
4042 | unsigned int iter; | |
4043 | }; | |
65f38f15 | 4044 | |
19e08130 AM |
4045 | /* Used to track dynamic relocations for local symbols. */ |
4046 | struct ppc_dyn_relocs | |
4047 | { | |
4048 | struct ppc_dyn_relocs *next; | |
4049 | ||
4050 | /* The input section of the reloc. */ | |
4051 | asection *sec; | |
4052 | ||
4053 | /* Total number of relocs copied for the input section. */ | |
4054 | unsigned int count : 31; | |
4055 | ||
4056 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
4057 | unsigned int ifunc : 1; | |
4058 | }; | |
4059 | ||
65f38f15 AM |
4060 | struct ppc_link_hash_entry |
4061 | { | |
4062 | struct elf_link_hash_entry elf; | |
4063 | ||
b3fac117 AM |
4064 | union { |
4065 | /* A pointer to the most recently used stub hash entry against this | |
4066 | symbol. */ | |
4067 | struct ppc_stub_hash_entry *stub_cache; | |
4068 | ||
4069 | /* A pointer to the next symbol starting with a '.' */ | |
4070 | struct ppc_link_hash_entry *next_dot_sym; | |
4071 | } u; | |
721956f4 | 4072 | |
65f38f15 | 4073 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 4074 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 4075 | |
721956f4 | 4076 | /* Link between function code and descriptor symbols. */ |
34814b9f | 4077 | struct ppc_link_hash_entry *oh; |
721956f4 | 4078 | |
e86ce104 AM |
4079 | /* Flag function code and descriptor symbols. */ |
4080 | unsigned int is_func:1; | |
4081 | unsigned int is_func_descriptor:1; | |
908b32fc | 4082 | unsigned int fake:1; |
411e1bfb | 4083 | |
c5614fa4 AM |
4084 | /* Whether global opd/toc sym has been adjusted or not. |
4085 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
4086 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
4087 | unsigned int adjust_done:1; |
4088 | ||
a4b6fadd AM |
4089 | /* Set if this is an out-of-line register save/restore function, |
4090 | with non-standard calling convention. */ | |
4091 | unsigned int save_res:1; | |
4092 | ||
8b5f1ed8 AM |
4093 | /* Set if a duplicate symbol with non-zero localentry is detected, |
4094 | even when the duplicate symbol does not provide a definition. */ | |
4095 | unsigned int non_zero_localentry:1; | |
4096 | ||
411e1bfb | 4097 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
4098 | Bits are or'd into the mask as the corresponding relocs are |
4099 | encountered during check_relocs, with TLS_TLS being set when any | |
4100 | of the other TLS bits are set. tls_optimize clears bits when | |
4101 | optimizing to indicate the corresponding GOT entry type is not | |
4102 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
4103 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
4104 | separate flag rather than setting TPREL just for convenience in | |
4105 | distinguishing the two cases. | |
4106 | These flags are also kept for local symbols. */ | |
4107 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
4108 | #define TLS_GD 2 /* GD reloc. */ | |
4109 | #define TLS_LD 4 /* LD reloc. */ | |
4110 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
4111 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
4112 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 4113 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 4114 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 4115 | unsigned char tls_mask; |
37da22e5 AM |
4116 | |
4117 | /* The above field is also used to mark function symbols. In which | |
4118 | case TLS_TLS will be 0. */ | |
4119 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 4120 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 4121 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
4122 | }; |
4123 | ||
4124 | /* ppc64 ELF linker hash table. */ | |
4125 | ||
4126 | struct ppc_link_hash_table | |
4127 | { | |
4128 | struct elf_link_hash_table elf; | |
4129 | ||
721956f4 AM |
4130 | /* The stub hash table. */ |
4131 | struct bfd_hash_table stub_hash_table; | |
4132 | ||
4133 | /* Another hash table for plt_branch stubs. */ | |
4134 | struct bfd_hash_table branch_hash_table; | |
4135 | ||
3b421ab3 AM |
4136 | /* Hash table for function prologue tocsave. */ |
4137 | htab_t tocsave_htab; | |
4138 | ||
e7d1c40c AM |
4139 | /* Various options and other info passed from the linker. */ |
4140 | struct ppc64_elf_params *params; | |
721956f4 | 4141 | |
6f20ed8a AM |
4142 | /* The size of sec_info below. */ |
4143 | unsigned int sec_info_arr_size; | |
4144 | ||
4145 | /* Per-section array of extra section info. Done this way rather | |
4146 | than as part of ppc64_elf_section_data so we have the info for | |
4147 | non-ppc64 sections. */ | |
4148 | struct | |
4149 | { | |
4150 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4151 | bfd_vma toc_off; |
6f20ed8a AM |
4152 | |
4153 | union | |
4154 | { | |
4155 | /* The section group that this section belongs to. */ | |
4156 | struct map_stub *group; | |
4157 | /* A temp section list pointer. */ | |
4158 | asection *list; | |
4159 | } u; | |
4160 | } *sec_info; | |
721956f4 | 4161 | |
a4b6fadd AM |
4162 | /* Linked list of groups. */ |
4163 | struct map_stub *group; | |
4164 | ||
ad8e1ba5 AM |
4165 | /* Temp used when calculating TOC pointers. */ |
4166 | bfd_vma toc_curr; | |
bf102f86 AM |
4167 | bfd *toc_bfd; |
4168 | asection *toc_first_sec; | |
ad8e1ba5 | 4169 | |
b3fac117 AM |
4170 | /* Used when adding symbols. */ |
4171 | struct ppc_link_hash_entry *dot_syms; | |
4172 | ||
33e44f2e | 4173 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 4174 | asection *glink; |
9e390558 | 4175 | asection *global_entry; |
82bd7b59 | 4176 | asection *sfpr; |
2d7ad24e AM |
4177 | asection *pltlocal; |
4178 | asection *relpltlocal; | |
4ce794b7 AM |
4179 | asection *brlt; |
4180 | asection *relbrlt; | |
58d180e8 | 4181 | asection *glink_eh_frame; |
ec338859 | 4182 | |
8387904d AM |
4183 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4184 | struct ppc_link_hash_entry *tls_get_addr; | |
4185 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4186 | |
927be08e AM |
4187 | /* The size of reliplt used by got entry relocs. */ |
4188 | bfd_size_type got_reli_size; | |
4189 | ||
9b5ecbd0 | 4190 | /* Statistics. */ |
7341d5e2 | 4191 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4192 | |
ee75fd95 AM |
4193 | /* Number of stubs against global syms. */ |
4194 | unsigned long stub_globals; | |
4195 | ||
ee67d69a AM |
4196 | /* Set if we're linking code with function descriptors. */ |
4197 | unsigned int opd_abi:1; | |
4198 | ||
4c52953f | 4199 | /* Support for multiple toc sections. */ |
33c0ec9d | 4200 | unsigned int do_multi_toc:1; |
4c52953f | 4201 | unsigned int multi_toc_needed:1; |
927be08e | 4202 | unsigned int second_toc_pass:1; |
67f0cbdb | 4203 | unsigned int do_toc_opt:1; |
4c52953f | 4204 | |
9a23f96e AM |
4205 | /* Set if tls optimization is enabled. */ |
4206 | unsigned int do_tls_opt:1; | |
4207 | ||
3e04d765 AM |
4208 | /* Set if inline plt calls should be converted to direct calls. */ |
4209 | unsigned int can_convert_all_inline_plt:1; | |
4210 | ||
5d1634d7 | 4211 | /* Set on error. */ |
99877b66 | 4212 | unsigned int stub_error:1; |
721956f4 | 4213 | |
8c5b4e52 AM |
4214 | /* Whether func_desc_adjust needs to be run over symbols. */ |
4215 | unsigned int need_func_desc_adj:1; | |
721956f4 | 4216 | |
82e66161 AM |
4217 | /* Whether there exist local gnu indirect function resolvers, |
4218 | referenced by dynamic relocations. */ | |
4219 | unsigned int local_ifunc_resolver:1; | |
4220 | unsigned int maybe_local_ifunc_resolver:1; | |
4221 | ||
f378ab09 AM |
4222 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
4223 | unsigned int has_plt_localentry0:1; | |
4224 | ||
721956f4 AM |
4225 | /* Incremented every time we size stubs. */ |
4226 | unsigned int stub_iteration; | |
5d1634d7 | 4227 | |
87d72d41 AM |
4228 | /* Small local sym cache. */ |
4229 | struct sym_cache sym_cache; | |
65f38f15 AM |
4230 | }; |
4231 | ||
4c52953f AM |
4232 | /* Rename some of the generic section flags to better document how they |
4233 | are used here. */ | |
b0dddeec AM |
4234 | |
4235 | /* Nonzero if this section has TLS related relocations. */ | |
4236 | #define has_tls_reloc sec_flg0 | |
4237 | ||
23cedd1d | 4238 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
4239 | #define has_tls_get_addr_call sec_flg1 |
4240 | ||
4241 | /* Nonzero if this section has any toc or got relocs. */ | |
4242 | #define has_toc_reloc sec_flg2 | |
4243 | ||
4244 | /* Nonzero if this section has a call to another section that uses | |
4245 | the toc or got. */ | |
d77c8a4b | 4246 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4247 | |
4248 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4249 | #define call_check_in_progress sec_flg4 |
70cc837d | 4250 | #define call_check_done sec_flg5 |
4c52953f | 4251 | |
65f38f15 AM |
4252 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4253 | ||
4254 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4255 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4256 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4257 | |
721956f4 AM |
4258 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4259 | ((struct ppc_stub_hash_entry *) \ | |
4260 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4261 | ||
4262 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4263 | ((struct ppc_branch_hash_entry *) \ | |
4264 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4265 | ||
4266 | /* Create an entry in the stub hash table. */ | |
4267 | ||
4268 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4269 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4270 | struct bfd_hash_table *table, | |
4271 | const char *string) | |
721956f4 AM |
4272 | { |
4273 | /* Allocate the structure if it has not already been allocated by a | |
4274 | subclass. */ | |
4275 | if (entry == NULL) | |
4276 | { | |
4277 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4278 | if (entry == NULL) | |
4279 | return entry; | |
4280 | } | |
4281 | ||
4282 | /* Call the allocation method of the superclass. */ | |
4283 | entry = bfd_hash_newfunc (entry, table, string); | |
4284 | if (entry != NULL) | |
4285 | { | |
4286 | struct ppc_stub_hash_entry *eh; | |
4287 | ||
4288 | /* Initialize the local fields. */ | |
4289 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4290 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4291 | eh->group = NULL; |
721956f4 AM |
4292 | eh->stub_offset = 0; |
4293 | eh->target_value = 0; | |
4294 | eh->target_section = NULL; | |
721956f4 | 4295 | eh->h = NULL; |
6911b7dc | 4296 | eh->plt_ent = NULL; |
6911b7dc | 4297 | eh->other = 0; |
721956f4 AM |
4298 | } |
4299 | ||
4300 | return entry; | |
4301 | } | |
4302 | ||
4303 | /* Create an entry in the branch hash table. */ | |
4304 | ||
4305 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4306 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4307 | struct bfd_hash_table *table, | |
4308 | const char *string) | |
721956f4 AM |
4309 | { |
4310 | /* Allocate the structure if it has not already been allocated by a | |
4311 | subclass. */ | |
4312 | if (entry == NULL) | |
4313 | { | |
4314 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4315 | if (entry == NULL) | |
4316 | return entry; | |
4317 | } | |
4318 | ||
4319 | /* Call the allocation method of the superclass. */ | |
4320 | entry = bfd_hash_newfunc (entry, table, string); | |
4321 | if (entry != NULL) | |
4322 | { | |
4323 | struct ppc_branch_hash_entry *eh; | |
4324 | ||
4325 | /* Initialize the local fields. */ | |
4326 | eh = (struct ppc_branch_hash_entry *) entry; | |
4327 | eh->offset = 0; | |
4328 | eh->iter = 0; | |
4329 | } | |
4330 | ||
4331 | return entry; | |
4332 | } | |
4333 | ||
65f38f15 AM |
4334 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4335 | ||
4336 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4337 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4338 | struct bfd_hash_table *table, | |
4339 | const char *string) | |
65f38f15 AM |
4340 | { |
4341 | /* Allocate the structure if it has not already been allocated by a | |
4342 | subclass. */ | |
4343 | if (entry == NULL) | |
4344 | { | |
4345 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4346 | if (entry == NULL) | |
4347 | return entry; | |
4348 | } | |
4349 | ||
4350 | /* Call the allocation method of the superclass. */ | |
4351 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4352 | if (entry != NULL) | |
4353 | { | |
4354 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4355 | ||
b3fac117 | 4356 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4357 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4358 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4359 | ||
4360 | /* When making function calls, old ABI code references function entry | |
4361 | points (dot symbols), while new ABI code references the function | |
4362 | descriptor symbol. We need to make any combination of reference and | |
4363 | definition work together, without breaking archive linking. | |
4364 | ||
4365 | For a defined function "foo" and an undefined call to "bar": | |
4366 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4367 | "bar" too). | |
4368 | A new object defines "foo" and references "bar". | |
4369 | ||
4370 | A new object thus has no problem with its undefined symbols being | |
4371 | satisfied by definitions in an old object. On the other hand, the | |
4372 | old object won't have ".bar" satisfied by a new object. | |
4373 | ||
4374 | Keep a list of newly added dot-symbols. */ | |
4375 | ||
4376 | if (string[0] == '.') | |
4377 | { | |
4378 | struct ppc_link_hash_table *htab; | |
4379 | ||
4380 | htab = (struct ppc_link_hash_table *) table; | |
4381 | eh->u.next_dot_sym = htab->dot_syms; | |
4382 | htab->dot_syms = eh; | |
4383 | } | |
65f38f15 AM |
4384 | } |
4385 | ||
4386 | return entry; | |
4387 | } | |
4388 | ||
3b421ab3 AM |
4389 | struct tocsave_entry { |
4390 | asection *sec; | |
4391 | bfd_vma offset; | |
4392 | }; | |
4393 | ||
4394 | static hashval_t | |
4395 | tocsave_htab_hash (const void *p) | |
4396 | { | |
4397 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 4398 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
4399 | } |
4400 | ||
4401 | static int | |
4402 | tocsave_htab_eq (const void *p1, const void *p2) | |
4403 | { | |
4404 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4405 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4406 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4407 | } | |
4408 | ||
68faa637 AM |
4409 | /* Destroy a ppc64 ELF linker hash table. */ |
4410 | ||
4411 | static void | |
d495ab0d | 4412 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4413 | { |
d495ab0d | 4414 | struct ppc_link_hash_table *htab; |
68faa637 | 4415 | |
d495ab0d | 4416 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4417 | if (htab->tocsave_htab) |
4418 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4419 | bfd_hash_table_free (&htab->branch_hash_table); |
4420 | bfd_hash_table_free (&htab->stub_hash_table); | |
4421 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4422 | } |
4423 | ||
65f38f15 AM |
4424 | /* Create a ppc64 ELF linker hash table. */ |
4425 | ||
4426 | static struct bfd_link_hash_table * | |
4ce794b7 | 4427 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4428 | { |
4429 | struct ppc_link_hash_table *htab; | |
4430 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4431 | ||
4ce794b7 | 4432 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4433 | if (htab == NULL) |
4434 | return NULL; | |
4435 | ||
66eb6687 | 4436 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4437 | sizeof (struct ppc_link_hash_entry), |
4438 | PPC64_ELF_DATA)) | |
65f38f15 | 4439 | { |
e2d34d7d | 4440 | free (htab); |
65f38f15 AM |
4441 | return NULL; |
4442 | } | |
4443 | ||
721956f4 | 4444 | /* Init the stub hash table too. */ |
66eb6687 AM |
4445 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4446 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4447 | { |
d495ab0d | 4448 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4449 | return NULL; |
4450 | } | |
721956f4 AM |
4451 | |
4452 | /* And the branch hash table. */ | |
66eb6687 AM |
4453 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4454 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4455 | { |
4456 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4457 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4458 | return NULL; |
4459 | } | |
721956f4 | 4460 | |
3b421ab3 AM |
4461 | htab->tocsave_htab = htab_try_create (1024, |
4462 | tocsave_htab_hash, | |
4463 | tocsave_htab_eq, | |
4464 | NULL); | |
4465 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4466 | { |
d495ab0d | 4467 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4468 | return NULL; |
4469 | } | |
d495ab0d | 4470 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4471 | |
3254fd24 AM |
4472 | /* Initializing two fields of the union is just cosmetic. We really |
4473 | only care about glist, but when compiled on a 32-bit host the | |
4474 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4475 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4476 | htab->elf.init_got_refcount.refcount = 0; |
4477 | htab->elf.init_got_refcount.glist = NULL; | |
4478 | htab->elf.init_plt_refcount.refcount = 0; | |
4479 | htab->elf.init_plt_refcount.glist = NULL; | |
4480 | htab->elf.init_got_offset.offset = 0; | |
4481 | htab->elf.init_got_offset.glist = NULL; | |
4482 | htab->elf.init_plt_offset.offset = 0; | |
4483 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4484 | |
65f38f15 AM |
4485 | return &htab->elf.root; |
4486 | } | |
4487 | ||
bfeb4a28 AM |
4488 | /* Create sections for linker generated code. */ |
4489 | ||
4490 | static bfd_boolean | |
4491 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4492 | { | |
4493 | struct ppc_link_hash_table *htab; | |
4494 | flagword flags; | |
4495 | ||
4496 | htab = ppc_hash_table (info); | |
4497 | ||
bfeb4a28 AM |
4498 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4499 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4500 | if (htab->params->save_restore_funcs) |
4501 | { | |
4502 | /* Create .sfpr for code to save and restore fp regs. */ | |
4503 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4504 | flags); | |
4505 | if (htab->sfpr == NULL | |
4506 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4507 | return FALSE; | |
4508 | } | |
4509 | ||
4510 | if (bfd_link_relocatable (info)) | |
4511 | return TRUE; | |
bfeb4a28 AM |
4512 | |
4513 | /* Create .glink for lazy dynamic linking support. */ | |
4514 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4515 | flags); | |
4516 | if (htab->glink == NULL | |
4517 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4518 | return FALSE; | |
4519 | ||
9e390558 AM |
4520 | /* The part of .glink used by global entry stubs, separate so that |
4521 | it can be aligned appropriately without affecting htab->glink. */ | |
4522 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4523 | flags); | |
4524 | if (htab->global_entry == NULL | |
4525 | || ! bfd_set_section_alignment (dynobj, htab->global_entry, 2)) | |
4526 | return FALSE; | |
4527 | ||
bfeb4a28 AM |
4528 | if (!info->no_ld_generated_unwind_info) |
4529 | { | |
4530 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4531 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4532 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4533 | ".eh_frame", | |
4534 | flags); | |
4535 | if (htab->glink_eh_frame == NULL | |
4536 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4537 | return FALSE; | |
4538 | } | |
4539 | ||
4540 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4541 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4542 | if (htab->elf.iplt == NULL | |
4543 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4544 | return FALSE; |
4545 | ||
4546 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4547 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4548 | htab->elf.irelplt |
4549 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4550 | if (htab->elf.irelplt == NULL | |
4551 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4552 | return FALSE; |
4553 | ||
4554 | /* Create branch lookup table for plt_branch stubs. */ | |
4555 | flags = (SEC_ALLOC | SEC_LOAD | |
4556 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4557 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4558 | flags); | |
4559 | if (htab->brlt == NULL | |
4560 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4561 | return FALSE; | |
4562 | ||
2d7ad24e AM |
4563 | /* Local plt entries, put in .branch_lt but a separate section for |
4564 | convenience. */ | |
4565 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4566 | flags); | |
4567 | if (htab->pltlocal == NULL | |
4568 | || ! bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) | |
4569 | return FALSE; | |
4570 | ||
0e1862bb | 4571 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4572 | return TRUE; |
4573 | ||
4574 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4575 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
4576 | htab->relbrlt |
4577 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 AM |
4578 | if (htab->relbrlt == NULL |
4579 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4580 | return FALSE; | |
4581 | ||
2d7ad24e AM |
4582 | htab->relpltlocal |
4583 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
4584 | if (htab->relpltlocal == NULL | |
4585 | || ! bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) | |
4586 | return FALSE; | |
4587 | ||
bfeb4a28 AM |
4588 | return TRUE; |
4589 | } | |
4590 | ||
e717da7e AM |
4591 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4592 | ||
bfeb4a28 | 4593 | bfd_boolean |
e7d1c40c AM |
4594 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4595 | struct ppc64_elf_params *params) | |
e717da7e AM |
4596 | { |
4597 | struct ppc_link_hash_table *htab; | |
4598 | ||
e7d1c40c | 4599 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4600 | |
4601 | /* Always hook our dynamic sections into the first bfd, which is the | |
4602 | linker created stub bfd. This ensures that the GOT header is at | |
4603 | the start of the output TOC section. */ | |
4604 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4605 | htab->elf.dynobj = params->stub_bfd; |
4606 | htab->params = params; | |
bfeb4a28 | 4607 | |
bfeb4a28 | 4608 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4609 | } |
4610 | ||
721956f4 AM |
4611 | /* Build a name for an entry in the stub hash table. */ |
4612 | ||
4613 | static char * | |
4ce794b7 AM |
4614 | ppc_stub_name (const asection *input_section, |
4615 | const asection *sym_sec, | |
4616 | const struct ppc_link_hash_entry *h, | |
4617 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4618 | { |
4619 | char *stub_name; | |
bcaa2f82 | 4620 | ssize_t len; |
721956f4 AM |
4621 | |
4622 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4623 | offsets from a sym as a branch target? In fact, we could | |
4624 | probably assume the addend is always zero. */ | |
4625 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4626 | ||
4627 | if (h) | |
4628 | { | |
4629 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4630 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4631 | if (stub_name == NULL) |
4632 | return stub_name; | |
4633 | ||
bcaa2f82 AM |
4634 | len = sprintf (stub_name, "%08x.%s+%x", |
4635 | input_section->id & 0xffffffff, | |
4636 | h->elf.root.root.string, | |
4637 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4638 | } |
4639 | else | |
4640 | { | |
ad8e1ba5 | 4641 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4642 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4643 | if (stub_name == NULL) |
4644 | return stub_name; | |
4645 | ||
bcaa2f82 AM |
4646 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4647 | input_section->id & 0xffffffff, | |
4648 | sym_sec->id & 0xffffffff, | |
4649 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4650 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4651 | } |
bcaa2f82 | 4652 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4653 | stub_name[len - 2] = 0; |
721956f4 AM |
4654 | return stub_name; |
4655 | } | |
4656 | ||
4657 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4658 | creating the stub name takes a bit of time. */ | |
4659 | ||
4660 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4661 | ppc_get_stub_entry (const asection *input_section, |
4662 | const asection *sym_sec, | |
039b3fef | 4663 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4664 | const Elf_Internal_Rela *rel, |
4665 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4666 | { |
4667 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4668 | struct map_stub *group; |
721956f4 AM |
4669 | |
4670 | /* If this input section is part of a group of sections sharing one | |
4671 | stub section, then use the id of the first section in the group. | |
4672 | Stub names need to include a section id, as there may well be | |
4673 | more than one stub used to reach say, printf, and we need to | |
4674 | distinguish between them. */ | |
6f20ed8a | 4675 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
4676 | if (group == NULL) |
4677 | return NULL; | |
721956f4 | 4678 | |
b3fac117 AM |
4679 | if (h != NULL && h->u.stub_cache != NULL |
4680 | && h->u.stub_cache->h == h | |
6f20ed8a | 4681 | && h->u.stub_cache->group == group) |
721956f4 | 4682 | { |
b3fac117 | 4683 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4684 | } |
4685 | else | |
4686 | { | |
4687 | char *stub_name; | |
4688 | ||
6f20ed8a | 4689 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4690 | if (stub_name == NULL) |
4691 | return NULL; | |
4692 | ||
4693 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4694 | stub_name, FALSE, FALSE); |
721956f4 | 4695 | if (h != NULL) |
b3fac117 | 4696 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4697 | |
4698 | free (stub_name); | |
4699 | } | |
4700 | ||
4701 | return stub_entry; | |
4702 | } | |
4703 | ||
4704 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4705 | stub entry are initialised. */ | |
4706 | ||
4707 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4708 | ppc_add_stub (const char *stub_name, |
4709 | asection *section, | |
25f53a85 | 4710 | struct bfd_link_info *info) |
721956f4 | 4711 | { |
25f53a85 | 4712 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4713 | struct map_stub *group; |
721956f4 AM |
4714 | asection *link_sec; |
4715 | asection *stub_sec; | |
4716 | struct ppc_stub_hash_entry *stub_entry; | |
4717 | ||
6f20ed8a AM |
4718 | group = htab->sec_info[section->id].u.group; |
4719 | link_sec = group->link_sec; | |
4720 | stub_sec = group->stub_sec; | |
721956f4 AM |
4721 | if (stub_sec == NULL) |
4722 | { | |
6f20ed8a AM |
4723 | size_t namelen; |
4724 | bfd_size_type len; | |
4725 | char *s_name; | |
721956f4 | 4726 | |
6f20ed8a AM |
4727 | namelen = strlen (link_sec->name); |
4728 | len = namelen + sizeof (STUB_SUFFIX); | |
4729 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4730 | if (s_name == NULL) | |
4731 | return NULL; | |
721956f4 | 4732 | |
6f20ed8a AM |
4733 | memcpy (s_name, link_sec->name, namelen); |
4734 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4735 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4736 | if (stub_sec == NULL) | |
4737 | return NULL; | |
4738 | group->stub_sec = stub_sec; | |
721956f4 AM |
4739 | } |
4740 | ||
4741 | /* Enter this entry into the linker stub hash table. */ | |
4742 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4743 | TRUE, FALSE); |
721956f4 AM |
4744 | if (stub_entry == NULL) |
4745 | { | |
695344c0 | 4746 | /* xgettext:c-format */ |
cf97bcb0 AM |
4747 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4748 | section->owner, stub_name); | |
721956f4 AM |
4749 | return NULL; |
4750 | } | |
4751 | ||
6f20ed8a | 4752 | stub_entry->group = group; |
721956f4 | 4753 | stub_entry->stub_offset = 0; |
721956f4 AM |
4754 | return stub_entry; |
4755 | } | |
4756 | ||
e717da7e AM |
4757 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4758 | not already done. */ | |
65f38f15 | 4759 | |
b34976b6 | 4760 | static bfd_boolean |
e717da7e | 4761 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4762 | { |
e717da7e AM |
4763 | asection *got, *relgot; |
4764 | flagword flags; | |
4765 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4766 | |
0c8d6e5c | 4767 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4768 | return FALSE; |
4dfe6ac6 NC |
4769 | if (htab == NULL) |
4770 | return FALSE; | |
0ffa91dd | 4771 | |
33e44f2e AM |
4772 | if (!htab->elf.sgot |
4773 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4774 | return FALSE; | |
e717da7e AM |
4775 | |
4776 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4777 | | SEC_LINKER_CREATED); | |
4778 | ||
c456f082 | 4779 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4780 | if (!got |
e717da7e AM |
4781 | || !bfd_set_section_alignment (abfd, got, 3)) |
4782 | return FALSE; | |
65f38f15 | 4783 | |
c456f082 AM |
4784 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4785 | flags | SEC_READONLY); | |
e717da7e | 4786 | if (!relgot |
e717da7e | 4787 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4788 | return FALSE; |
e717da7e AM |
4789 | |
4790 | ppc64_elf_tdata (abfd)->got = got; | |
4791 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4792 | return TRUE; |
65f38f15 | 4793 | } |
5bd4f169 | 4794 | |
b31867b6 AM |
4795 | /* Follow indirect and warning symbol links. */ |
4796 | ||
4797 | static inline struct bfd_link_hash_entry * | |
4798 | follow_link (struct bfd_link_hash_entry *h) | |
4799 | { | |
4800 | while (h->type == bfd_link_hash_indirect | |
4801 | || h->type == bfd_link_hash_warning) | |
4802 | h = h->u.i.link; | |
4803 | return h; | |
4804 | } | |
4805 | ||
4806 | static inline struct elf_link_hash_entry * | |
4807 | elf_follow_link (struct elf_link_hash_entry *h) | |
4808 | { | |
4809 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4810 | } | |
4811 | ||
4812 | static inline struct ppc_link_hash_entry * | |
4813 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4814 | { | |
4815 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4816 | } | |
4817 | ||
40d16e0b AM |
4818 | /* Merge PLT info on FROM with that on TO. */ |
4819 | ||
4820 | static void | |
4821 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4822 | struct ppc_link_hash_entry *to) | |
4823 | { | |
4824 | if (from->elf.plt.plist != NULL) | |
4825 | { | |
4826 | if (to->elf.plt.plist != NULL) | |
4827 | { | |
4828 | struct plt_entry **entp; | |
4829 | struct plt_entry *ent; | |
4830 | ||
4831 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4832 | { | |
4833 | struct plt_entry *dent; | |
4834 | ||
4835 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4836 | if (dent->addend == ent->addend) | |
4837 | { | |
4838 | dent->plt.refcount += ent->plt.refcount; | |
4839 | *entp = ent->next; | |
4840 | break; | |
4841 | } | |
4842 | if (dent == NULL) | |
4843 | entp = &ent->next; | |
4844 | } | |
4845 | *entp = to->elf.plt.plist; | |
4846 | } | |
4847 | ||
4848 | to->elf.plt.plist = from->elf.plt.plist; | |
4849 | from->elf.plt.plist = NULL; | |
4850 | } | |
4851 | } | |
4852 | ||
65f38f15 AM |
4853 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4854 | ||
4855 | static void | |
fcfa13d2 AM |
4856 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4857 | struct elf_link_hash_entry *dir, | |
4858 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4859 | { |
4860 | struct ppc_link_hash_entry *edir, *eind; | |
4861 | ||
4862 | edir = (struct ppc_link_hash_entry *) dir; | |
4863 | eind = (struct ppc_link_hash_entry *) ind; | |
4864 | ||
c79d6685 AM |
4865 | edir->is_func |= eind->is_func; |
4866 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4867 | edir->tls_mask |= eind->tls_mask; | |
4868 | if (eind->oh != NULL) | |
4869 | edir->oh = ppc_follow_link (eind->oh); | |
4870 | ||
474436e6 | 4871 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
4872 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4873 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4874 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 4875 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
4876 | edir->elf.needs_plt |= eind->elf.needs_plt; |
4877 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 4878 | |
d311bc8b AM |
4879 | /* If we were called to copy over info for a weak sym, don't copy |
4880 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
4881 | in order to simplify readonly_dynrelocs and save a field in the | |
4882 | symbol hash entry, but that means dyn_relocs can't be used in any | |
4883 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 4884 | are then tested. */ |
d311bc8b | 4885 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 4886 | return; |
d311bc8b | 4887 | |
411e1bfb | 4888 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4889 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4890 | { |
bbd7ec4a AM |
4891 | if (edir->dyn_relocs != NULL) |
4892 | { | |
6061a67d AM |
4893 | struct elf_dyn_relocs **pp; |
4894 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4895 | |
fcfa13d2 | 4896 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4897 | list. Merge any entries against the same section. */ |
4898 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4899 | { | |
6061a67d | 4900 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4901 | |
4902 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4903 | if (q->sec == p->sec) | |
4904 | { | |
4905 | q->pc_count += p->pc_count; | |
4906 | q->count += p->count; | |
4907 | *pp = p->next; | |
4908 | break; | |
4909 | } | |
4910 | if (q == NULL) | |
4911 | pp = &p->next; | |
4912 | } | |
4913 | *pp = edir->dyn_relocs; | |
4914 | } | |
4915 | ||
65f38f15 AM |
4916 | edir->dyn_relocs = eind->dyn_relocs; |
4917 | eind->dyn_relocs = NULL; | |
4918 | } | |
65f38f15 | 4919 | |
81848ca0 AM |
4920 | /* Copy over got entries that we may have already seen to the |
4921 | symbol which just became indirect. */ | |
411e1bfb AM |
4922 | if (eind->elf.got.glist != NULL) |
4923 | { | |
4924 | if (edir->elf.got.glist != NULL) | |
4925 | { | |
4926 | struct got_entry **entp; | |
4927 | struct got_entry *ent; | |
4928 | ||
4929 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4930 | { | |
4931 | struct got_entry *dent; | |
4932 | ||
4933 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4934 | if (dent->addend == ent->addend | |
e717da7e | 4935 | && dent->owner == ent->owner |
411e1bfb AM |
4936 | && dent->tls_type == ent->tls_type) |
4937 | { | |
4938 | dent->got.refcount += ent->got.refcount; | |
4939 | *entp = ent->next; | |
4940 | break; | |
4941 | } | |
4942 | if (dent == NULL) | |
4943 | entp = &ent->next; | |
4944 | } | |
4945 | *entp = edir->elf.got.glist; | |
4946 | } | |
4947 | ||
4948 | edir->elf.got.glist = eind->elf.got.glist; | |
4949 | eind->elf.got.glist = NULL; | |
4950 | } | |
4951 | ||
4952 | /* And plt entries. */ | |
40d16e0b | 4953 | move_plt_plist (eind, edir); |
411e1bfb | 4954 | |
fcfa13d2 | 4955 | if (eind->elf.dynindx != -1) |
411e1bfb | 4956 | { |
fcfa13d2 AM |
4957 | if (edir->elf.dynindx != -1) |
4958 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4959 | edir->elf.dynstr_index); | |
411e1bfb AM |
4960 | edir->elf.dynindx = eind->elf.dynindx; |
4961 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4962 | eind->elf.dynindx = -1; | |
4963 | eind->elf.dynstr_index = 0; | |
4964 | } | |
411e1bfb AM |
4965 | } |
4966 | ||
8387904d AM |
4967 | /* Find the function descriptor hash entry from the given function code |
4968 | hash entry FH. Link the entries via their OH fields. */ | |
4969 | ||
4970 | static struct ppc_link_hash_entry * | |
b31867b6 | 4971 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4972 | { |
4973 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4974 | ||
4975 | if (fdh == NULL) | |
4976 | { | |
4977 | const char *fd_name = fh->elf.root.root.string + 1; | |
4978 | ||
4979 | fdh = (struct ppc_link_hash_entry *) | |
4980 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4981 | if (fdh == NULL) |
4982 | return fdh; | |
4983 | ||
4984 | fdh->is_func_descriptor = 1; | |
4985 | fdh->oh = fh; | |
4986 | fh->is_func = 1; | |
4987 | fh->oh = fdh; | |
8387904d AM |
4988 | } |
4989 | ||
8c5b4e52 AM |
4990 | fdh = ppc_follow_link (fdh); |
4991 | fdh->is_func_descriptor = 1; | |
4992 | fdh->oh = fh; | |
4993 | return fdh; | |
8387904d AM |
4994 | } |
4995 | ||
8c5b4e52 | 4996 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4997 | |
4998 | static struct ppc_link_hash_entry * | |
4999 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 5000 | struct ppc_link_hash_entry *fh) |
bb700d78 | 5001 | { |
8c5b4e52 AM |
5002 | bfd *abfd = fh->elf.root.u.undef.abfd; |
5003 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 5004 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
5005 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
5006 | ? BSF_WEAK | |
5007 | : BSF_GLOBAL); | |
5008 | ||
5009 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
5010 | fh->elf.root.root.string + 1, | |
5011 | flags, bfd_und_section_ptr, 0, | |
5012 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
5013 | return NULL; |
5014 | ||
5015 | fdh = (struct ppc_link_hash_entry *) bh; | |
5016 | fdh->elf.non_elf = 0; | |
908b32fc AM |
5017 | fdh->fake = 1; |
5018 | fdh->is_func_descriptor = 1; | |
5019 | fdh->oh = fh; | |
5020 | fh->is_func = 1; | |
5021 | fh->oh = fdh; | |
bb700d78 AM |
5022 | return fdh; |
5023 | } | |
5024 | ||
8387904d AM |
5025 | /* Fix function descriptor symbols defined in .opd sections to be |
5026 | function type. */ | |
555cd476 AM |
5027 | |
5028 | static bfd_boolean | |
c16153ae | 5029 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 5030 | struct bfd_link_info *info, |
555cd476 | 5031 | Elf_Internal_Sym *isym, |
6911b7dc | 5032 | const char **name, |
555cd476 AM |
5033 | flagword *flags ATTRIBUTE_UNUSED, |
5034 | asection **sec, | |
b53dfeb2 | 5035 | bfd_vma *value) |
555cd476 | 5036 | { |
b53dfeb2 | 5037 | if (*sec != NULL |
f1885d1e | 5038 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
5039 | { |
5040 | asection *code_sec; | |
5041 | ||
5042 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
5043 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
5044 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
5045 | ||
5046 | /* If the symbol is a function defined in .opd, and the function | |
5047 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 5048 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
5049 | && (*sec)->reloc_count != 0 |
5050 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
5051 | FALSE) != (bfd_vma) -1 | |
5052 | && discarded_section (code_sec)) | |
5053 | { | |
5054 | *sec = bfd_und_section_ptr; | |
5055 | isym->st_shndx = SHN_UNDEF; | |
5056 | } | |
5057 | } | |
dbd1e97e AM |
5058 | else if (*sec != NULL |
5059 | && strcmp ((*sec)->name, ".toc") == 0 | |
5060 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
5061 | { | |
5062 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5063 | if (htab != NULL) | |
5064 | htab->params->object_in_toc = 1; | |
5065 | } | |
433817dd | 5066 | |
6911b7dc AM |
5067 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5068 | { | |
5069 | if (abiversion (ibfd) == 0) | |
5070 | set_abiversion (ibfd, 2); | |
5071 | else if (abiversion (ibfd) == 1) | |
5072 | { | |
cf97bcb0 AM |
5073 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
5074 | " for ABI version 1"), *name); | |
6911b7dc AM |
5075 | bfd_set_error (bfd_error_bad_value); |
5076 | return FALSE; | |
5077 | } | |
5078 | } | |
5079 | ||
555cd476 AM |
5080 | return TRUE; |
5081 | } | |
5082 | ||
6911b7dc AM |
5083 | /* Merge non-visibility st_other attributes: local entry point. */ |
5084 | ||
5085 | static void | |
5086 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5087 | const Elf_Internal_Sym *isym, | |
5088 | bfd_boolean definition, | |
5089 | bfd_boolean dynamic) | |
5090 | { | |
f378ab09 | 5091 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
5092 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
5093 | | ELF_ST_VISIBILITY (h->other)); | |
5094 | } | |
5095 | ||
8c5b4e52 AM |
5096 | /* Hook called on merging a symbol. We use this to clear "fake" since |
5097 | we now have a real symbol. */ | |
5098 | ||
5099 | static bfd_boolean | |
5100 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 5101 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
5102 | asection **psec ATTRIBUTE_UNUSED, |
5103 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
5104 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
5105 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
5106 | const asection *oldsec ATTRIBUTE_UNUSED) | |
5107 | { | |
5108 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
5109 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5110 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
5111 | return TRUE; |
5112 | } | |
5113 | ||
8387904d | 5114 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
5115 | inclusion of a new ABI object archive that defines "bar". |
5116 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
5117 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
5118 | |
5119 | static struct elf_link_hash_entry * | |
5120 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
5121 | struct bfd_link_info *info, | |
5122 | const char *name) | |
5123 | { | |
5124 | struct elf_link_hash_entry *h; | |
5125 | char *dot_name; | |
5126 | size_t len; | |
5127 | ||
5128 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
5129 | if (h != NULL |
5130 | /* Don't return this sym if it is a fake function descriptor | |
5131 | created by add_symbol_adjust. */ | |
8c5b4e52 | 5132 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
5133 | return h; |
5134 | ||
5135 | if (name[0] == '.') | |
5136 | return h; | |
5137 | ||
5138 | len = strlen (name); | |
5139 | dot_name = bfd_alloc (abfd, len + 2); | |
5140 | if (dot_name == NULL) | |
e99955cd | 5141 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
5142 | dot_name[0] = '.'; |
5143 | memcpy (dot_name + 1, name, len + 1); | |
5144 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
5145 | bfd_release (abfd, dot_name); | |
5146 | return h; | |
5147 | } | |
5148 | ||
5149 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5150 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5151 | are made weak. This stops later archive searches from including an | |
5152 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5153 | prevents the linker complaining about undefined symbols. |
5154 | We also check and correct mismatched symbol visibility here. The | |
5155 | most restrictive visibility of the function descriptor and the | |
5156 | function entry symbol is used. */ | |
8387904d AM |
5157 | |
5158 | static bfd_boolean | |
b3fac117 | 5159 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5160 | { |
8387904d AM |
5161 | struct ppc_link_hash_table *htab; |
5162 | struct ppc_link_hash_entry *fdh; | |
5163 | ||
b3fac117 AM |
5164 | if (eh->elf.root.type == bfd_link_hash_warning) |
5165 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5166 | |
8400d40d AM |
5167 | if (eh->elf.root.type == bfd_link_hash_indirect) |
5168 | return TRUE; | |
5169 | ||
b3fac117 AM |
5170 | if (eh->elf.root.root.string[0] != '.') |
5171 | abort (); | |
8387904d | 5172 | |
b3fac117 | 5173 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5174 | if (htab == NULL) |
5175 | return FALSE; | |
5176 | ||
b31867b6 | 5177 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
5178 | if (fdh == NULL |
5179 | && !bfd_link_relocatable (info) | |
5180 | && (eh->elf.root.type == bfd_link_hash_undefined | |
5181 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5182 | && eh->elf.ref_regular) | |
5183 | { | |
5184 | /* Make an undefined function descriptor sym, in order to | |
5185 | pull in an --as-needed shared lib. Archives are handled | |
5186 | elsewhere. */ | |
5187 | fdh = make_fdh (info, eh); | |
5188 | if (fdh == NULL) | |
5189 | return FALSE; | |
bb700d78 | 5190 | } |
8c5b4e52 AM |
5191 | |
5192 | if (fdh != NULL) | |
8387904d | 5193 | { |
35b0ce59 AM |
5194 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5195 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
5196 | |
5197 | /* Make both descriptor and entry symbol have the most | |
5198 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
5199 | if (entry_vis < descr_vis) |
5200 | fdh->elf.other += entry_vis - descr_vis; | |
5201 | else if (entry_vis > descr_vis) | |
5202 | eh->elf.other += descr_vis - entry_vis; | |
5203 | ||
8c5b4e52 AM |
5204 | /* Propagate reference flags from entry symbol to function |
5205 | descriptor symbol. */ | |
bc4e12de | 5206 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 5207 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
5208 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
5209 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
5210 | ||
5211 | if (!fdh->elf.forced_local | |
5212 | && fdh->elf.dynindx == -1 | |
5213 | && fdh->elf.versioned != versioned_hidden | |
5214 | && (bfd_link_dll (info) | |
5215 | || fdh->elf.def_dynamic | |
5216 | || fdh->elf.ref_dynamic) | |
5217 | && (eh->elf.ref_regular | |
5218 | || eh->elf.def_regular)) | |
5219 | { | |
5220 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
5221 | return FALSE; | |
35b0ce59 | 5222 | } |
8387904d | 5223 | } |
99877b66 | 5224 | |
8387904d AM |
5225 | return TRUE; |
5226 | } | |
5227 | ||
f6c7c3e8 AM |
5228 | /* Set up opd section info and abiversion for IBFD, and process list |
5229 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5230 | |
8387904d | 5231 | static bfd_boolean |
f6c7c3e8 | 5232 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5233 | { |
99877b66 | 5234 | struct ppc_link_hash_table *htab; |
b3fac117 | 5235 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5236 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5237 | |
459609d6 | 5238 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5239 | { |
b9399fcf AM |
5240 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
5241 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
5242 | ||
459609d6 AM |
5243 | if (abiversion (ibfd) == 0) |
5244 | set_abiversion (ibfd, 1); | |
8a2058b5 | 5245 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 5246 | { |
695344c0 | 5247 | /* xgettext:c-format */ |
cf97bcb0 AM |
5248 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
5249 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
5250 | bfd_set_error (bfd_error_bad_value); |
5251 | return FALSE; | |
f6c7c3e8 | 5252 | } |
b9399fcf | 5253 | } |
f6c7c3e8 | 5254 | |
b9399fcf AM |
5255 | if (is_ppc64_elf (info->output_bfd)) |
5256 | { | |
5257 | /* For input files without an explicit abiversion in e_flags | |
5258 | we should have flagged any with symbol st_other bits set | |
5259 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5260 | Set the output abiversion if not yet set, and for any input | |
5261 | still ambiguous, take its abiversion from the output. | |
5262 | Differences in ABI are reported later. */ | |
5263 | if (abiversion (info->output_bfd) == 0) | |
5264 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5265 | else if (abiversion (ibfd) == 0) | |
5266 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
5267 | } |
5268 | ||
459609d6 AM |
5269 | htab = ppc_hash_table (info); |
5270 | if (htab == NULL) | |
b9399fcf | 5271 | return TRUE; |
459609d6 | 5272 | |
b9399fcf AM |
5273 | if (opd != NULL && opd->size != 0 |
5274 | && (ibfd->flags & DYNAMIC) == 0 | |
5275 | && (opd->flags & SEC_RELOC) != 0 | |
5276 | && opd->reloc_count != 0 | |
5277 | && !bfd_is_abs_section (opd->output_section) | |
5278 | && info->gc_sections) | |
5279 | { | |
5280 | /* Garbage collection needs some extra help with .opd sections. | |
5281 | We don't want to necessarily keep everything referenced by | |
5282 | relocs in .opd, as that would keep all functions. Instead, | |
5283 | if we reference an .opd symbol (a function descriptor), we | |
5284 | want to keep the function code symbol's section. This is | |
5285 | easy for global symbols, but for local syms we need to keep | |
5286 | information about the associated function section. */ | |
5287 | bfd_size_type amt; | |
5288 | asection **opd_sym_map; | |
5289 | Elf_Internal_Shdr *symtab_hdr; | |
5290 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
5291 | ||
5292 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
5293 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
5294 | if (opd_sym_map == NULL) | |
5295 | return FALSE; | |
5296 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
5297 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
5298 | info->keep_memory); | |
5299 | if (relocs == NULL) | |
5300 | return FALSE; | |
5301 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5302 | rel_end = relocs + opd->reloc_count - 1; | |
5303 | for (rel = relocs; rel < rel_end; rel++) | |
5304 | { | |
5305 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
5306 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
5307 | ||
5308 | if (r_type == R_PPC64_ADDR64 | |
5309 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
5310 | && r_symndx < symtab_hdr->sh_info) | |
5311 | { | |
5312 | Elf_Internal_Sym *isym; | |
5313 | asection *s; | |
5314 | ||
5315 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
5316 | if (isym == NULL) | |
5317 | { | |
5318 | if (elf_section_data (opd)->relocs != relocs) | |
5319 | free (relocs); | |
5320 | return FALSE; | |
5321 | } | |
5322 | ||
5323 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
5324 | if (s != NULL && s != opd) | |
5325 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
5326 | } | |
5327 | } | |
5328 | if (elf_section_data (opd)->relocs != relocs) | |
5329 | free (relocs); | |
5330 | } | |
459609d6 AM |
5331 | |
5332 | p = &htab->dot_syms; | |
5333 | while ((eh = *p) != NULL) | |
5334 | { | |
5335 | *p = NULL; | |
5336 | if (&eh->elf == htab->elf.hgot) | |
5337 | ; | |
5338 | else if (htab->elf.hgot == NULL | |
5339 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5340 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
5341 | else if (abiversion (ibfd) <= 1) |
5342 | { | |
5343 | htab->need_func_desc_adj = 1; | |
5344 | if (!add_symbol_adjust (eh, info)) | |
5345 | return FALSE; | |
5346 | } | |
459609d6 AM |
5347 | p = &eh->u.next_dot_sym; |
5348 | } | |
b3fac117 | 5349 | return TRUE; |
8387904d AM |
5350 | } |
5351 | ||
97fed1c9 JJ |
5352 | /* Undo hash table changes when an --as-needed input file is determined |
5353 | not to be needed. */ | |
5354 | ||
5355 | static bfd_boolean | |
e5034e59 AM |
5356 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5357 | struct bfd_link_info *info, | |
5358 | enum notice_asneeded_action act) | |
97fed1c9 | 5359 | { |
e5034e59 AM |
5360 | if (act == notice_not_needed) |
5361 | { | |
5362 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5363 | |
e5034e59 AM |
5364 | if (htab == NULL) |
5365 | return FALSE; | |
4dfe6ac6 | 5366 | |
e5034e59 AM |
5367 | htab->dot_syms = NULL; |
5368 | } | |
5369 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5370 | } |
5371 | ||
aa374f67 AM |
5372 | /* If --just-symbols against a final linked binary, then assume we need |
5373 | toc adjusting stubs when calling functions defined there. */ | |
5374 | ||
5375 | static void | |
5376 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5377 | { | |
5378 | if ((sec->flags & SEC_CODE) != 0 | |
5379 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5380 | && is_ppc64_elf (sec->owner)) | |
5381 | { | |
2c3f079f AM |
5382 | if (abiversion (sec->owner) >= 2 |
5383 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5384 | sec->has_toc_reloc = 1; |
5385 | } | |
5386 | _bfd_elf_link_just_syms (sec, info); | |
5387 | } | |
5388 | ||
e054468f | 5389 | static struct plt_entry ** |
4ce794b7 AM |
5390 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5391 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5392 | { |
5393 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5394 | struct plt_entry **local_plt; |
f961d9dd | 5395 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5396 | |
5397 | if (local_got_ents == NULL) | |
5398 | { | |
5399 | bfd_size_type size = symtab_hdr->sh_info; | |
5400 | ||
e054468f AM |
5401 | size *= (sizeof (*local_got_ents) |
5402 | + sizeof (*local_plt) | |
5403 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5404 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5405 | if (local_got_ents == NULL) |
e054468f | 5406 | return NULL; |
411e1bfb AM |
5407 | elf_local_got_ents (abfd) = local_got_ents; |
5408 | } | |
5409 | ||
37da22e5 | 5410 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5411 | { |
5412 | struct got_entry *ent; | |
5413 | ||
5414 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5415 | if (ent->addend == r_addend |
5416 | && ent->owner == abfd | |
5417 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5418 | break; |
5419 | if (ent == NULL) | |
5420 | { | |
5421 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5422 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5423 | if (ent == NULL) |
5424 | return FALSE; | |
5425 | ent->next = local_got_ents[r_symndx]; | |
5426 | ent->addend = r_addend; | |
e717da7e | 5427 | ent->owner = abfd; |
411e1bfb | 5428 | ent->tls_type = tls_type; |
927be08e | 5429 | ent->is_indirect = FALSE; |
411e1bfb AM |
5430 | ent->got.refcount = 0; |
5431 | local_got_ents[r_symndx] = ent; | |
5432 | } | |
5433 | ent->got.refcount += 1; | |
5434 | } | |
5435 | ||
e054468f | 5436 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5437 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 5438 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
5439 | |
5440 | return local_plt + r_symndx; | |
65f38f15 AM |
5441 | } |
5442 | ||
411e1bfb | 5443 | static bfd_boolean |
e054468f | 5444 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5445 | { |
411e1bfb | 5446 | struct plt_entry *ent; |
1e2f5b6e | 5447 | |
e054468f | 5448 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5449 | if (ent->addend == addend) |
5450 | break; | |
5451 | if (ent == NULL) | |
1e2f5b6e | 5452 | { |
411e1bfb | 5453 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5454 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5455 | if (ent == NULL) |
5456 | return FALSE; | |
e054468f | 5457 | ent->next = *plist; |
411e1bfb AM |
5458 | ent->addend = addend; |
5459 | ent->plt.refcount = 0; | |
e054468f | 5460 | *plist = ent; |
1e2f5b6e | 5461 | } |
411e1bfb | 5462 | ent->plt.refcount += 1; |
b34976b6 | 5463 | return TRUE; |
1e2f5b6e AM |
5464 | } |
5465 | ||
e054468f AM |
5466 | static bfd_boolean |
5467 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5468 | { | |
5469 | return (r_type == R_PPC64_REL24 | |
5470 | || r_type == R_PPC64_REL14 | |
5471 | || r_type == R_PPC64_REL14_BRTAKEN | |
5472 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5473 | || r_type == R_PPC64_ADDR24 | |
5474 | || r_type == R_PPC64_ADDR14 | |
5475 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d AM |
5476 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5477 | || r_type == R_PPC64_PLTCALL); | |
5478 | } | |
5479 | ||
5480 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
5481 | ||
5482 | static bfd_boolean | |
5483 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
5484 | { | |
5485 | return (r_type == R_PPC64_PLT16_HA | |
5486 | || r_type == R_PPC64_PLT16_HI | |
5487 | || r_type == R_PPC64_PLT16_LO | |
5488 | || r_type == R_PPC64_PLT16_LO_DS | |
5489 | || r_type == R_PPC64_PLTSEQ); | |
e054468f AM |
5490 | } |
5491 | ||
5bd4f169 | 5492 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5493 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5494 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5495 | |
b34976b6 | 5496 | static bfd_boolean |
4ce794b7 AM |
5497 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5498 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5499 | { |
65f38f15 | 5500 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5501 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5502 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5503 | const Elf_Internal_Rela *rel; |
5504 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5505 | asection *sreloc; |
3a71aa26 | 5506 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 5507 | bfd_boolean is_opd; |
5bd4f169 | 5508 | |
0e1862bb | 5509 | if (bfd_link_relocatable (info)) |
b34976b6 | 5510 | return TRUE; |
5bd4f169 | 5511 | |
680a3378 AM |
5512 | /* Don't do anything special with non-loaded, non-alloced sections. |
5513 | In particular, any relocs in such sections should not affect GOT | |
5514 | and PLT reference counting (ie. we don't allow them to create GOT | |
5515 | or PLT entries), there's no possibility or desire to optimize TLS | |
5516 | relocs, and there's not much point in propagating relocs to shared | |
5517 | libs that the dynamic linker won't relocate. */ | |
5518 | if ((sec->flags & SEC_ALLOC) == 0) | |
5519 | return TRUE; | |
5520 | ||
0c8d6e5c | 5521 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5522 | |
65f38f15 | 5523 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5524 | if (htab == NULL) |
5525 | return FALSE; | |
5526 | ||
3a71aa26 AM |
5527 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5528 | FALSE, FALSE, TRUE); | |
5529 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5530 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5531 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5532 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5533 | sreloc = NULL; |
b9399fcf | 5534 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
5535 | rel_end = relocs + sec->reloc_count; |
5536 | for (rel = relocs; rel < rel_end; rel++) | |
5537 | { | |
5538 | unsigned long r_symndx; | |
5539 | struct elf_link_hash_entry *h; | |
04c9666a | 5540 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5541 | int tls_type; |
7c8fe5c4 | 5542 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5543 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5544 | |
5545 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5546 | if (r_symndx < symtab_hdr->sh_info) | |
5547 | h = NULL; | |
5548 | else | |
973a3492 L |
5549 | { |
5550 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5551 | h = elf_follow_link (h); |
1c865ab2 AM |
5552 | |
5553 | if (h == htab->elf.hgot) | |
5554 | sec->has_toc_reloc = 1; | |
973a3492 | 5555 | } |
5bd4f169 | 5556 | |
727fc41e | 5557 | tls_type = 0; |
e054468f | 5558 | ifunc = NULL; |
25f23106 AM |
5559 | if (h != NULL) |
5560 | { | |
5561 | if (h->type == STT_GNU_IFUNC) | |
5562 | { | |
5563 | h->needs_plt = 1; | |
5564 | ifunc = &h->plt.plist; | |
5565 | } | |
5566 | } | |
5567 | else | |
5568 | { | |
5569 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5570 | abfd, r_symndx); | |
5571 | if (isym == NULL) | |
5572 | return FALSE; | |
5573 | ||
5574 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5575 | { | |
5576 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
37da22e5 AM |
5577 | rel->r_addend, |
5578 | NON_GOT | PLT_IFUNC); | |
25f23106 AM |
5579 | if (ifunc == NULL) |
5580 | return FALSE; | |
5581 | } | |
5582 | } | |
727fc41e | 5583 | |
cbf95972 | 5584 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5585 | switch (r_type) |
5bd4f169 | 5586 | { |
727fc41e AM |
5587 | case R_PPC64_TLSGD: |
5588 | case R_PPC64_TLSLD: | |
5589 | /* These special tls relocs tie a call to __tls_get_addr with | |
5590 | its parameter symbol. */ | |
37da22e5 AM |
5591 | if (h != NULL) |
5592 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
5593 | else | |
5594 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5595 | rel->r_addend, | |
5596 | NON_GOT | TLS_TLS | TLS_MARK)) | |
5597 | return FALSE; | |
5598 | sec->has_tls_reloc = 1; | |
727fc41e AM |
5599 | break; |
5600 | ||
411e1bfb AM |
5601 | case R_PPC64_GOT_TLSLD16: |
5602 | case R_PPC64_GOT_TLSLD16_LO: | |
5603 | case R_PPC64_GOT_TLSLD16_HI: | |
5604 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5605 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5606 | goto dogottls; |
5607 | ||
5608 | case R_PPC64_GOT_TLSGD16: | |
5609 | case R_PPC64_GOT_TLSGD16_LO: | |
5610 | case R_PPC64_GOT_TLSGD16_HI: | |
5611 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5612 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5613 | goto dogottls; |
5614 | ||
5615 | case R_PPC64_GOT_TPREL16_DS: | |
5616 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5617 | case R_PPC64_GOT_TPREL16_HI: | |
5618 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 5619 | if (bfd_link_dll (info)) |
411e1bfb AM |
5620 | info->flags |= DF_STATIC_TLS; |
5621 | tls_type = TLS_TLS | TLS_TPREL; | |
5622 | goto dogottls; | |
5623 | ||
5624 | case R_PPC64_GOT_DTPREL16_DS: | |
5625 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5626 | case R_PPC64_GOT_DTPREL16_HI: | |
5627 | case R_PPC64_GOT_DTPREL16_HA: | |
5628 | tls_type = TLS_TLS | TLS_DTPREL; | |
5629 | dogottls: | |
5630 | sec->has_tls_reloc = 1; | |
1a0670f3 | 5631 | /* Fall through */ |
411e1bfb | 5632 | |
5bd4f169 | 5633 | case R_PPC64_GOT16: |
5bd4f169 | 5634 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5635 | case R_PPC64_GOT16_HA: |
5636 | case R_PPC64_GOT16_HI: | |
5637 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5638 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5639 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5640 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5641 | if (r_type == R_PPC64_GOT_TLSLD16 |
5642 | || r_type == R_PPC64_GOT_TLSGD16 | |
5643 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5644 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5645 | || r_type == R_PPC64_GOT16 | |
5646 | || r_type == R_PPC64_GOT16_DS) | |
5647 | { | |
5648 | htab->do_multi_toc = 1; | |
d77c8a4b | 5649 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5650 | } |
5651 | ||
e717da7e AM |
5652 | if (ppc64_elf_tdata (abfd)->got == NULL |
5653 | && !create_got_section (abfd, info)) | |
b34976b6 | 5654 | return FALSE; |
5bd4f169 AM |
5655 | |
5656 | if (h != NULL) | |
5657 | { | |
411e1bfb AM |
5658 | struct ppc_link_hash_entry *eh; |
5659 | struct got_entry *ent; | |
65f38f15 | 5660 | |
411e1bfb AM |
5661 | eh = (struct ppc_link_hash_entry *) h; |
5662 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5663 | if (ent->addend == rel->r_addend | |
e717da7e | 5664 | && ent->owner == abfd |
411e1bfb AM |
5665 | && ent->tls_type == tls_type) |
5666 | break; | |
5667 | if (ent == NULL) | |
5bd4f169 | 5668 | { |
411e1bfb | 5669 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5670 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5671 | if (ent == NULL) |
b34976b6 | 5672 | return FALSE; |
411e1bfb AM |
5673 | ent->next = eh->elf.got.glist; |
5674 | ent->addend = rel->r_addend; | |
e717da7e | 5675 | ent->owner = abfd; |
411e1bfb | 5676 | ent->tls_type = tls_type; |
927be08e | 5677 | ent->is_indirect = FALSE; |
411e1bfb AM |
5678 | ent->got.refcount = 0; |
5679 | eh->elf.got.glist = ent; | |
5bd4f169 | 5680 | } |
411e1bfb | 5681 | ent->got.refcount += 1; |
e7b938ca | 5682 | eh->tls_mask |= tls_type; |
5bd4f169 | 5683 | } |
411e1bfb AM |
5684 | else |
5685 | /* This is a global offset table entry for a local symbol. */ | |
5686 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5687 | rel->r_addend, tls_type)) | |
5688 | return FALSE; | |
a345bc8d AM |
5689 | |
5690 | /* We may also need a plt entry if the symbol turns out to be | |
5691 | an ifunc. */ | |
0e1862bb | 5692 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5693 | { |
5694 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5695 | return FALSE; | |
5696 | } | |
5bd4f169 AM |
5697 | break; |
5698 | ||
5bd4f169 | 5699 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5700 | case R_PPC64_PLT16_HI: |
5701 | case R_PPC64_PLT16_LO: | |
08be3224 | 5702 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
5703 | case R_PPC64_PLT32: |
5704 | case R_PPC64_PLT64: | |
cbf95972 AM |
5705 | /* This symbol requires a procedure linkage table entry. */ |
5706 | plt_list = ifunc; | |
5707 | if (h != NULL) | |
e054468f | 5708 | { |
e054468f AM |
5709 | h->needs_plt = 1; |
5710 | if (h->root.root.string[0] == '.' | |
5711 | && h->root.root.string[1] != '\0') | |
5712 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 5713 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
5714 | plt_list = &h->plt.plist; |
5715 | } | |
5716 | if (plt_list == NULL) | |
2d7ad24e AM |
5717 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
5718 | rel->r_addend, | |
5719 | NON_GOT | PLT_KEEP); | |
cbf95972 AM |
5720 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5721 | return FALSE; | |
5bd4f169 AM |
5722 | break; |
5723 | ||
5724 | /* The following relocations don't need to propagate the | |
5725 | relocation if linking a shared object since they are | |
5726 | section relative. */ | |
5727 | case R_PPC64_SECTOFF: | |
5728 | case R_PPC64_SECTOFF_LO: | |
5729 | case R_PPC64_SECTOFF_HI: | |
5730 | case R_PPC64_SECTOFF_HA: | |
5731 | case R_PPC64_SECTOFF_DS: | |
5732 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5733 | case R_PPC64_DTPREL16: |
5734 | case R_PPC64_DTPREL16_LO: | |
5735 | case R_PPC64_DTPREL16_HI: | |
5736 | case R_PPC64_DTPREL16_HA: | |
5737 | case R_PPC64_DTPREL16_DS: | |
5738 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5739 | case R_PPC64_DTPREL16_HIGH: |
5740 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5741 | case R_PPC64_DTPREL16_HIGHER: |
5742 | case R_PPC64_DTPREL16_HIGHERA: | |
5743 | case R_PPC64_DTPREL16_HIGHEST: | |
5744 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5745 | break; |
5746 | ||
ad8e1ba5 | 5747 | /* Nor do these. */ |
25f23106 AM |
5748 | case R_PPC64_REL16: |
5749 | case R_PPC64_REL16_LO: | |
5750 | case R_PPC64_REL16_HI: | |
5751 | case R_PPC64_REL16_HA: | |
a680de9a | 5752 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5753 | break; |
5754 | ||
45965137 AM |
5755 | /* Not supported as a dynamic relocation. */ |
5756 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5757 | if (bfd_link_pic (info)) |
45965137 AM |
5758 | { |
5759 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5760 | ppc_howto_init (); | |
695344c0 | 5761 | /* xgettext:c-format */ |
174d0a74 | 5762 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 5763 | "in shared libraries and PIEs\n"), |
45965137 AM |
5764 | abfd, sec, rel->r_offset, |
5765 | ppc64_elf_howto_table[r_type]->name); | |
5766 | bfd_set_error (bfd_error_bad_value); | |
5767 | return FALSE; | |
5768 | } | |
5769 | break; | |
5770 | ||
ad8e1ba5 | 5771 | case R_PPC64_TOC16: |
33c0ec9d AM |
5772 | case R_PPC64_TOC16_DS: |
5773 | htab->do_multi_toc = 1; | |
d77c8a4b | 5774 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5775 | /* Fall through. */ |
ad8e1ba5 AM |
5776 | case R_PPC64_TOC16_LO: |
5777 | case R_PPC64_TOC16_HI: | |
5778 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5779 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5780 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5781 | break; |
5782 | ||
006589cf AM |
5783 | /* Marker reloc. */ |
5784 | case R_PPC64_ENTRY: | |
5785 | break; | |
5786 | ||
5bd4f169 AM |
5787 | /* This relocation describes the C++ object vtable hierarchy. |
5788 | Reconstruct it for later use during GC. */ | |
5789 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5790 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5791 | return FALSE; |
5bd4f169 AM |
5792 | break; |
5793 | ||
5794 | /* This relocation describes which C++ vtable entries are actually | |
5795 | used. Record for later use during GC. */ | |
5796 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5797 | BFD_ASSERT (h != NULL); |
5798 | if (h != NULL | |
5799 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5800 | return FALSE; |
5bd4f169 AM |
5801 | break; |
5802 | ||
721956f4 AM |
5803 | case R_PPC64_REL14: |
5804 | case R_PPC64_REL14_BRTAKEN: | |
5805 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5806 | { |
5807 | asection *dest = NULL; | |
5808 | ||
5809 | /* Heuristic: If jumping outside our section, chances are | |
5810 | we are going to need a stub. */ | |
5811 | if (h != NULL) | |
5812 | { | |
5813 | /* If the sym is weak it may be overridden later, so | |
5814 | don't assume we know where a weak sym lives. */ | |
5815 | if (h->root.type == bfd_link_hash_defined) | |
5816 | dest = h->root.u.def.section; | |
5817 | } | |
5818 | else | |
87d72d41 AM |
5819 | { |
5820 | Elf_Internal_Sym *isym; | |
5821 | ||
5822 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5823 | abfd, r_symndx); | |
5824 | if (isym == NULL) | |
5825 | return FALSE; | |
5826 | ||
5827 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5828 | } | |
5829 | ||
220c76dd | 5830 | if (dest != sec) |
7c8fe5c4 | 5831 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5832 | } |
3e04d765 AM |
5833 | goto rel24; |
5834 | ||
5835 | case R_PPC64_PLTCALL: | |
5836 | ppc64_elf_section_data (sec)->has_pltcall = 1; | |
721956f4 AM |
5837 | /* Fall through. */ |
5838 | ||
5d1634d7 | 5839 | case R_PPC64_REL24: |
3e04d765 | 5840 | rel24: |
cbf95972 AM |
5841 | plt_list = ifunc; |
5842 | if (h != NULL) | |
5d1634d7 | 5843 | { |
e054468f AM |
5844 | h->needs_plt = 1; |
5845 | if (h->root.root.string[0] == '.' | |
5846 | && h->root.root.string[1] != '\0') | |
5847 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5848 | |
3a71aa26 | 5849 | if (h == tga || h == dottga) |
cbf95972 AM |
5850 | { |
5851 | sec->has_tls_reloc = 1; | |
5852 | if (rel != relocs | |
5853 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5854 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5855 | /* We have a new-style __tls_get_addr call with | |
5856 | a marker reloc. */ | |
5857 | ; | |
5858 | else | |
5859 | /* Mark this section as having an old-style call. */ | |
5860 | sec->has_tls_get_addr_call = 1; | |
5861 | } | |
5862 | plt_list = &h->plt.plist; | |
411e1bfb | 5863 | } |
cbf95972 AM |
5864 | |
5865 | /* We may need a .plt entry if the function this reloc | |
5866 | refers to is in a shared lib. */ | |
5867 | if (plt_list | |
5868 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5869 | return FALSE; | |
411e1bfb AM |
5870 | break; |
5871 | ||
cbf95972 AM |
5872 | case R_PPC64_ADDR14: |
5873 | case R_PPC64_ADDR14_BRNTAKEN: | |
5874 | case R_PPC64_ADDR14_BRTAKEN: | |
5875 | case R_PPC64_ADDR24: | |
5876 | goto dodyn; | |
5877 | ||
411e1bfb AM |
5878 | case R_PPC64_TPREL64: |
5879 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5880 | if (bfd_link_dll (info)) |
411e1bfb AM |
5881 | info->flags |= DF_STATIC_TLS; |
5882 | goto dotlstoc; | |
5883 | ||
5884 | case R_PPC64_DTPMOD64: | |
5885 | if (rel + 1 < rel_end | |
5886 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5887 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5888 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5889 | else |
951fd09b | 5890 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5891 | goto dotlstoc; |
5892 | ||
5893 | case R_PPC64_DTPREL64: | |
5894 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5895 | if (rel != relocs | |
5896 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5897 | && rel[-1].r_offset == rel->r_offset - 8) | |
5898 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5899 | Don't mark with TLS_DTPREL. */ | |
5900 | goto dodyn; | |
5901 | ||
5902 | dotlstoc: | |
5903 | sec->has_tls_reloc = 1; | |
5904 | if (h != NULL) | |
5905 | { | |
5906 | struct ppc_link_hash_entry *eh; | |
5907 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5908 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5909 | } |
5910 | else | |
5911 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5912 | rel->r_addend, tls_type)) | |
5913 | return FALSE; | |
5914 | ||
7c8fe5c4 AM |
5915 | ppc64_sec = ppc64_elf_section_data (sec); |
5916 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5917 | { |
3a71aa26 AM |
5918 | bfd_size_type amt; |
5919 | ||
e7b938ca | 5920 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5921 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5922 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5923 | if (ppc64_sec->u.toc.symndx == NULL) | |
5924 | return FALSE; | |
5925 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5926 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5927 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5928 | return FALSE; |
7c8fe5c4 AM |
5929 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5930 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5931 | } |
5932 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5933 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5934 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5935 | |
5936 | /* Mark the second slot of a GD or LD entry. | |
5937 | -1 to indicate GD and -2 to indicate LD. */ | |
5938 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5939 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5940 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5941 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5942 | goto dodyn; |
5943 | ||
5944 | case R_PPC64_TPREL16: | |
5945 | case R_PPC64_TPREL16_LO: | |
5946 | case R_PPC64_TPREL16_HI: | |
5947 | case R_PPC64_TPREL16_HA: | |
5948 | case R_PPC64_TPREL16_DS: | |
5949 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5950 | case R_PPC64_TPREL16_HIGH: |
5951 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5952 | case R_PPC64_TPREL16_HIGHER: |
5953 | case R_PPC64_TPREL16_HIGHERA: | |
5954 | case R_PPC64_TPREL16_HIGHEST: | |
5955 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
5956 | if (bfd_link_dll (info)) |
5957 | info->flags |= DF_STATIC_TLS; | |
5958 | goto dodyn; | |
5d1634d7 | 5959 | |
e86ce104 | 5960 | case R_PPC64_ADDR64: |
b9399fcf | 5961 | if (is_opd |
1e2f5b6e | 5962 | && rel + 1 < rel_end |
4ce794b7 | 5963 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5964 | { |
8387904d | 5965 | if (h != NULL) |
8c5b4e52 | 5966 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 5967 | } |
e86ce104 AM |
5968 | /* Fall through. */ |
5969 | ||
65f38f15 AM |
5970 | case R_PPC64_ADDR16: |
5971 | case R_PPC64_ADDR16_DS: | |
5972 | case R_PPC64_ADDR16_HA: | |
5973 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5974 | case R_PPC64_ADDR16_HIGH: |
5975 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5976 | case R_PPC64_ADDR16_HIGHER: |
5977 | case R_PPC64_ADDR16_HIGHERA: | |
5978 | case R_PPC64_ADDR16_HIGHEST: | |
5979 | case R_PPC64_ADDR16_HIGHESTA: | |
5980 | case R_PPC64_ADDR16_LO: | |
5981 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5982 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5983 | && rel->r_addend == 0) |
5984 | { | |
5985 | /* We may need a .plt entry if this reloc refers to a | |
5986 | function in a shared lib. */ | |
5987 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5988 | return FALSE; | |
5989 | h->pointer_equality_needed = 1; | |
5990 | } | |
5991 | /* Fall through. */ | |
5992 | ||
5993 | case R_PPC64_REL30: | |
5994 | case R_PPC64_REL32: | |
5995 | case R_PPC64_REL64: | |
65f38f15 | 5996 | case R_PPC64_ADDR32: |
65f38f15 AM |
5997 | case R_PPC64_UADDR16: |
5998 | case R_PPC64_UADDR32: | |
5999 | case R_PPC64_UADDR64: | |
5bd4f169 | 6000 | case R_PPC64_TOC: |
0e1862bb | 6001 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 6002 | /* We may need a copy reloc. */ |
f5385ebf | 6003 | h->non_got_ref = 1; |
81848ca0 | 6004 | |
41bd81ab | 6005 | /* Don't propagate .opd relocs. */ |
b9399fcf | 6006 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 6007 | break; |
e86ce104 | 6008 | |
65f38f15 AM |
6009 | /* If we are creating a shared library, and this is a reloc |
6010 | against a global symbol, or a non PC relative reloc | |
6011 | against a local symbol, then we need to copy the reloc | |
6012 | into the shared library. However, if we are linking with | |
6013 | -Bsymbolic, we do not need to copy a reloc against a | |
6014 | global symbol which is defined in an object we are | |
6015 | including in the link (i.e., DEF_REGULAR is set). At | |
6016 | this point we have not seen all the input files, so it is | |
6017 | possible that DEF_REGULAR is not set now but will be set | |
6018 | later (it is never cleared). In case of a weak definition, | |
6019 | DEF_REGULAR may be cleared later by a strong definition in | |
6020 | a shared library. We account for that possibility below by | |
f4656909 | 6021 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
6022 | table entry. A similar situation occurs when creating |
6023 | shared libraries and symbol visibility changes render the | |
6024 | symbol local. | |
6025 | ||
6026 | If on the other hand, we are creating an executable, we | |
6027 | may need to keep relocations for symbols satisfied by a | |
6028 | dynamic library if we manage to avoid copy relocs for the | |
6029 | symbol. */ | |
411e1bfb | 6030 | dodyn: |
0e1862bb | 6031 | if ((bfd_link_pic (info) |
1d483afe | 6032 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 6033 | || (h != NULL |
198f1157 | 6034 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 6035 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 6036 | || !h->def_regular)))) |
f4656909 | 6037 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 6038 | && !bfd_link_pic (info) |
65f38f15 AM |
6039 | && h != NULL |
6040 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 6041 | || !h->def_regular)) |
0e1862bb | 6042 | || (!bfd_link_pic (info) |
25f23106 | 6043 | && ifunc != NULL)) |
5bd4f169 | 6044 | { |
65f38f15 AM |
6045 | /* We must copy these reloc types into the output file. |
6046 | Create a reloc section in dynobj and make room for | |
6047 | this reloc. */ | |
5bd4f169 AM |
6048 | if (sreloc == NULL) |
6049 | { | |
83bac4b0 NC |
6050 | sreloc = _bfd_elf_make_dynamic_reloc_section |
6051 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 6052 | |
5bd4f169 | 6053 | if (sreloc == NULL) |
83bac4b0 | 6054 | return FALSE; |
5bd4f169 AM |
6055 | } |
6056 | ||
65f38f15 AM |
6057 | /* If this is a global symbol, we count the number of |
6058 | relocations we need for this symbol. */ | |
6059 | if (h != NULL) | |
6060 | { | |
19e08130 AM |
6061 | struct elf_dyn_relocs *p; |
6062 | struct elf_dyn_relocs **head; | |
6063 | ||
ec338859 | 6064 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
6065 | p = *head; |
6066 | if (p == NULL || p->sec != sec) | |
6067 | { | |
6068 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6069 | if (p == NULL) | |
6070 | return FALSE; | |
6071 | p->next = *head; | |
6072 | *head = p; | |
6073 | p->sec = sec; | |
6074 | p->count = 0; | |
6075 | p->pc_count = 0; | |
6076 | } | |
6077 | p->count += 1; | |
6078 | if (!must_be_dyn_reloc (info, r_type)) | |
6079 | p->pc_count += 1; | |
65f38f15 AM |
6080 | } |
6081 | else | |
6082 | { | |
ec338859 AM |
6083 | /* Track dynamic relocs needed for local syms too. |
6084 | We really need local syms available to do this | |
6085 | easily. Oh well. */ | |
19e08130 AM |
6086 | struct ppc_dyn_relocs *p; |
6087 | struct ppc_dyn_relocs **head; | |
6088 | bfd_boolean is_ifunc; | |
ec338859 | 6089 | asection *s; |
6edfbbad | 6090 | void *vpp; |
87d72d41 | 6091 | Elf_Internal_Sym *isym; |
6edfbbad | 6092 | |
87d72d41 AM |
6093 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6094 | abfd, r_symndx); | |
6095 | if (isym == NULL) | |
b34976b6 | 6096 | return FALSE; |
ec338859 | 6097 | |
87d72d41 AM |
6098 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
6099 | if (s == NULL) | |
6100 | s = sec; | |
6101 | ||
6edfbbad | 6102 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
6103 | head = (struct ppc_dyn_relocs **) vpp; |
6104 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
6105 | p = *head; | |
6106 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
6107 | p = p->next; | |
6108 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
6109 | { | |
6110 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6111 | if (p == NULL) | |
6112 | return FALSE; | |
6113 | p->next = *head; | |
6114 | *head = p; | |
6115 | p->sec = sec; | |
6116 | p->ifunc = is_ifunc; | |
6117 | p->count = 0; | |
6118 | } | |
6119 | p->count += 1; | |
ec338859 | 6120 | } |
65f38f15 | 6121 | } |
5bd4f169 | 6122 | break; |
65f38f15 AM |
6123 | |
6124 | default: | |
96e0dda4 | 6125 | break; |
5bd4f169 AM |
6126 | } |
6127 | } | |
6128 | ||
b34976b6 | 6129 | return TRUE; |
5bd4f169 AM |
6130 | } |
6131 | ||
ee67d69a AM |
6132 | /* Merge backend specific data from an object file to the output |
6133 | object file when linking. */ | |
6134 | ||
6135 | static bfd_boolean | |
50e03d47 | 6136 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 6137 | { |
50e03d47 | 6138 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
6139 | unsigned long iflags, oflags; |
6140 | ||
6141 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
6142 | return TRUE; | |
6143 | ||
6144 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
6145 | return TRUE; | |
6146 | ||
50e03d47 | 6147 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
6148 | return FALSE; |
6149 | ||
6150 | iflags = elf_elfheader (ibfd)->e_flags; | |
6151 | oflags = elf_elfheader (obfd)->e_flags; | |
6152 | ||
f6c7c3e8 | 6153 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 6154 | { |
4eca0228 | 6155 | _bfd_error_handler |
695344c0 | 6156 | /* xgettext:c-format */ |
871b3ab2 | 6157 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
6158 | bfd_set_error (bfd_error_bad_value); |
6159 | return FALSE; | |
6160 | } | |
f6c7c3e8 | 6161 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 6162 | { |
4eca0228 | 6163 | _bfd_error_handler |
695344c0 | 6164 | /* xgettext:c-format */ |
871b3ab2 | 6165 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
6166 | ibfd, iflags, oflags); |
6167 | bfd_set_error (bfd_error_bad_value); | |
6168 | return FALSE; | |
6169 | } | |
6170 | ||
50e03d47 | 6171 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 6172 | |
ee67d69a | 6173 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 6174 | _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
6175 | |
6176 | return TRUE; | |
6177 | } | |
6178 | ||
6179 | static bfd_boolean | |
6180 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6181 | { | |
6182 | /* Print normal ELF private data. */ | |
6183 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6184 | ||
6185 | if (elf_elfheader (abfd)->e_flags != 0) | |
6186 | { | |
6187 | FILE *file = ptr; | |
6188 | ||
ee67d69a AM |
6189 | fprintf (file, _("private flags = 0x%lx:"), |
6190 | elf_elfheader (abfd)->e_flags); | |
6191 | ||
6192 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6193 | fprintf (file, _(" [abiv%ld]"), | |
6194 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6195 | fputc ('\n', file); | |
6196 | } | |
6197 | ||
6198 | return TRUE; | |
6199 | } | |
6200 | ||
8387904d | 6201 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6202 | of the code entry point, and its section, which must be in the same |
6203 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6204 | |
6205 | static bfd_vma | |
6206 | opd_entry_value (asection *opd_sec, | |
6207 | bfd_vma offset, | |
6208 | asection **code_sec, | |
aef36ac1 AM |
6209 | bfd_vma *code_off, |
6210 | bfd_boolean in_code_sec) | |
8387904d AM |
6211 | { |
6212 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6213 | Elf_Internal_Rela *relocs; |
8387904d | 6214 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6215 | bfd_vma val; |
8387904d | 6216 | |
9f296da3 AM |
6217 | /* No relocs implies we are linking a --just-symbols object, or looking |
6218 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6219 | if (opd_sec->reloc_count == 0) |
6220 | { | |
729eabd5 | 6221 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6222 | |
729eabd5 AM |
6223 | if (contents == NULL) |
6224 | { | |
6225 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6226 | return (bfd_vma) -1; | |
6227 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6228 | } | |
ee1e4ede | 6229 | |
dbb3fbbb | 6230 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6231 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6232 | return (bfd_vma) -1; |
6233 | ||
729eabd5 | 6234 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6235 | if (code_sec != NULL) |
6236 | { | |
6237 | asection *sec, *likely = NULL; | |
ee1e4ede | 6238 | |
aef36ac1 | 6239 | if (in_code_sec) |
4b85d634 | 6240 | { |
aef36ac1 AM |
6241 | sec = *code_sec; |
6242 | if (sec->vma <= val | |
6243 | && val < sec->vma + sec->size) | |
6244 | likely = sec; | |
6245 | else | |
6246 | val = -1; | |
6247 | } | |
6248 | else | |
6249 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6250 | if (sec->vma <= val | |
6251 | && (sec->flags & SEC_LOAD) != 0 | |
6252 | && (sec->flags & SEC_ALLOC) != 0) | |
6253 | likely = sec; | |
6254 | if (likely != NULL) | |
6255 | { | |
6256 | *code_sec = likely; | |
6257 | if (code_off != NULL) | |
6258 | *code_off = val - likely->vma; | |
4b85d634 AM |
6259 | } |
6260 | } | |
aef36ac1 | 6261 | return val; |
4b85d634 AM |
6262 | } |
6263 | ||
0c8d6e5c | 6264 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6265 | |
729eabd5 | 6266 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6267 | if (relocs == NULL) |
6268 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6269 | /* PR 17512: file: df8e1fd6. */ |
6270 | if (relocs == NULL) | |
6271 | return (bfd_vma) -1; | |
645ea6a9 | 6272 | |
8387904d | 6273 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6274 | lo = relocs; |
8387904d | 6275 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6276 | val = (bfd_vma) -1; |
8387904d AM |
6277 | while (lo < hi) |
6278 | { | |
6279 | look = lo + (hi - lo) / 2; | |
6280 | if (look->r_offset < offset) | |
6281 | lo = look + 1; | |
6282 | else if (look->r_offset > offset) | |
6283 | hi = look; | |
6284 | else | |
6285 | { | |
0ffa91dd NC |
6286 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6287 | ||
8387904d AM |
6288 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6289 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6290 | { | |
6291 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6292 | asection *sec = NULL; |
8387904d | 6293 | |
b53dfeb2 AM |
6294 | if (symndx >= symtab_hdr->sh_info |
6295 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6296 | { |
6297 | struct elf_link_hash_entry **sym_hashes; | |
6298 | struct elf_link_hash_entry *rh; | |
6299 | ||
6300 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6301 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6302 | if (rh != NULL) |
6303 | { | |
6304 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6305 | if (rh->root.type != bfd_link_hash_defined |
6306 | && rh->root.type != bfd_link_hash_defweak) | |
6307 | break; | |
6308 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6309 | { |
bb854a36 AM |
6310 | val = rh->root.u.def.value; |
6311 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6312 | } |
6313 | } | |
6314 | } | |
6315 | ||
6316 | if (sec == NULL) | |
6317 | { | |
6318 | Elf_Internal_Sym *sym; | |
6319 | ||
6320 | if (symndx < symtab_hdr->sh_info) | |
6321 | { | |
6322 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6323 | if (sym == NULL) | |
6324 | { | |
6325 | size_t symcnt = symtab_hdr->sh_info; | |
6326 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6327 | symcnt, 0, | |
6328 | NULL, NULL, NULL); | |
6329 | if (sym == NULL) | |
6330 | break; | |
6331 | symtab_hdr->contents = (bfd_byte *) sym; | |
6332 | } | |
6333 | sym += symndx; | |
128205bb AM |
6334 | } |
6335 | else | |
6336 | { | |
b53dfeb2 AM |
6337 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6338 | 1, symndx, | |
6339 | NULL, NULL, NULL); | |
128205bb AM |
6340 | if (sym == NULL) |
6341 | break; | |
128205bb | 6342 | } |
b53dfeb2 AM |
6343 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6344 | if (sec == NULL) | |
6345 | break; | |
6346 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6347 | val = sym->st_value; | |
8387904d | 6348 | } |
b53dfeb2 | 6349 | |
8387904d AM |
6350 | val += look->r_addend; |
6351 | if (code_off != NULL) | |
6352 | *code_off = val; | |
6353 | if (code_sec != NULL) | |
aef36ac1 AM |
6354 | { |
6355 | if (in_code_sec && *code_sec != sec) | |
6356 | return -1; | |
6357 | else | |
6358 | *code_sec = sec; | |
6359 | } | |
b53dfeb2 | 6360 | if (sec->output_section != NULL) |
8387904d | 6361 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6362 | } |
6363 | break; | |
6364 | } | |
6365 | } | |
645ea6a9 | 6366 | |
645ea6a9 | 6367 | return val; |
8387904d AM |
6368 | } |
6369 | ||
aef36ac1 AM |
6370 | /* If the ELF symbol SYM might be a function in SEC, return the |
6371 | function size and set *CODE_OFF to the function's entry point, | |
6372 | otherwise return zero. */ | |
9f296da3 | 6373 | |
aef36ac1 AM |
6374 | static bfd_size_type |
6375 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6376 | bfd_vma *code_off) | |
9f296da3 | 6377 | { |
aef36ac1 AM |
6378 | bfd_size_type size; |
6379 | ||
6380 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6381 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6382 | return 0; | |
6383 | ||
6384 | size = 0; | |
6385 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6386 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6387 | ||
6388 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6389 | { |
b07bca4e AM |
6390 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6391 | bfd_vma symval = sym->value; | |
6392 | ||
6393 | if (opd != NULL | |
6394 | && opd->adjust != NULL | |
6395 | && elf_section_data (sym->section)->relocs != NULL) | |
6396 | { | |
6397 | /* opd_entry_value will use cached relocs that have been | |
6398 | adjusted, but with raw symbols. That means both local | |
6399 | and global symbols need adjusting. */ | |
6400 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6401 | if (adjust == -1) | |
6402 | return 0; | |
6403 | symval += adjust; | |
6404 | } | |
6405 | ||
6406 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6407 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6408 | return 0; | |
6409 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6410 | symbol. This size has nothing to do with the code size of the | |
6411 | function, which is what we're supposed to return, but the | |
6412 | code size isn't available without looking up the dot-sym. | |
6413 | However, doing that would be a waste of time particularly | |
6414 | since elf_find_function will look at the dot-sym anyway. | |
6415 | Now, elf_find_function will keep the largest size of any | |
6416 | function sym found at the code address of interest, so return | |
6417 | 1 here to avoid it incorrectly caching a larger function size | |
6418 | for a small function. This does mean we return the wrong | |
6419 | size for a new-ABI function of size 24, but all that does is | |
6420 | disable caching for such functions. */ | |
6421 | if (size == 24) | |
6422 | size = 1; | |
9f296da3 | 6423 | } |
aef36ac1 AM |
6424 | else |
6425 | { | |
6426 | if (sym->section != sec) | |
6427 | return 0; | |
6428 | *code_off = sym->value; | |
6429 | } | |
6430 | if (size == 0) | |
6431 | size = 1; | |
6432 | return size; | |
9f296da3 AM |
6433 | } |
6434 | ||
f378ab09 AM |
6435 | /* Return true if symbol is a strong function defined in an ELFv2 |
6436 | object with st_other localentry bits of zero, ie. its local entry | |
6437 | point coincides with its global entry point. */ | |
6438 | ||
6439 | static bfd_boolean | |
6440 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
6441 | { | |
6442 | return (h != NULL | |
6443 | && h->type == STT_FUNC | |
6444 | && h->root.type == bfd_link_hash_defined | |
6445 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 6446 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
6447 | && is_ppc64_elf (h->root.u.def.section->owner) |
6448 | && abiversion (h->root.u.def.section->owner) >= 2); | |
6449 | } | |
6450 | ||
854b41e7 AM |
6451 | /* Return true if symbol is defined in a regular object file. */ |
6452 | ||
6453 | static bfd_boolean | |
6454 | is_static_defined (struct elf_link_hash_entry *h) | |
6455 | { | |
6456 | return ((h->root.type == bfd_link_hash_defined | |
6457 | || h->root.type == bfd_link_hash_defweak) | |
6458 | && h->root.u.def.section != NULL | |
6459 | && h->root.u.def.section->output_section != NULL); | |
6460 | } | |
6461 | ||
b31867b6 AM |
6462 | /* If FDH is a function descriptor symbol, return the associated code |
6463 | entry symbol if it is defined. Return NULL otherwise. */ | |
6464 | ||
6465 | static struct ppc_link_hash_entry * | |
6466 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6467 | { | |
6468 | if (fdh->is_func_descriptor) | |
6469 | { | |
6470 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6471 | if (fh->elf.root.type == bfd_link_hash_defined | |
6472 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6473 | return fh; | |
6474 | } | |
6475 | return NULL; | |
6476 | } | |
6477 | ||
6478 | /* If FH is a function code entry symbol, return the associated | |
6479 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6480 | ||
6481 | static struct ppc_link_hash_entry * | |
6482 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6483 | { | |
6484 | if (fh->oh != NULL | |
6485 | && fh->oh->is_func_descriptor) | |
6486 | { | |
6487 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6488 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6489 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6490 | return fdh; | |
6491 | } | |
6492 | return NULL; | |
6493 | } | |
6494 | ||
8c5b4e52 AM |
6495 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
6496 | ||
6497 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
6498 | ||
6499 | static bfd_boolean | |
6500 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
6501 | { | |
6502 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6503 | ||
6504 | if (htab != NULL && htab->need_func_desc_adj) | |
6505 | { | |
6506 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6507 | htab->need_func_desc_adj = 0; | |
6508 | } | |
6509 | return bfd_elf_gc_sections (abfd, info); | |
6510 | } | |
6511 | ||
74f0fb50 AM |
6512 | /* Mark all our entry sym sections, both opd and code section. */ |
6513 | ||
6514 | static void | |
6515 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6516 | { | |
6517 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6518 | struct bfd_sym_chain *sym; | |
6519 | ||
4dfe6ac6 NC |
6520 | if (htab == NULL) |
6521 | return; | |
6522 | ||
74f0fb50 AM |
6523 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6524 | { | |
b31867b6 | 6525 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6526 | asection *sec; |
6527 | ||
6528 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6529 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6530 | if (eh == NULL) |
6531 | continue; | |
6532 | if (eh->elf.root.type != bfd_link_hash_defined | |
6533 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6534 | continue; | |
6535 | ||
b31867b6 AM |
6536 | fh = defined_code_entry (eh); |
6537 | if (fh != NULL) | |
74f0fb50 | 6538 | { |
b31867b6 | 6539 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6540 | sec->flags |= SEC_KEEP; |
6541 | } | |
6542 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6543 | && opd_entry_value (eh->elf.root.u.def.section, | |
6544 | eh->elf.root.u.def.value, | |
aef36ac1 | 6545 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6546 | sec->flags |= SEC_KEEP; |
6547 | ||
6548 | sec = eh->elf.root.u.def.section; | |
6549 | sec->flags |= SEC_KEEP; | |
6550 | } | |
6551 | } | |
6552 | ||
64d03ab5 AM |
6553 | /* Mark sections containing dynamically referenced symbols. When |
6554 | building shared libraries, we must assume that any visible symbol is | |
6555 | referenced. */ | |
6556 | ||
6557 | static bfd_boolean | |
6558 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6559 | { | |
6560 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6561 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6562 | struct ppc_link_hash_entry *fdh; |
b407645f | 6563 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6564 | |
64d03ab5 | 6565 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6566 | fdh = defined_func_desc (eh); |
6567 | if (fdh != NULL) | |
6568 | eh = fdh; | |
64d03ab5 AM |
6569 | |
6570 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6571 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 6572 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 6573 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6574 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6575 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6576 | && (!bfd_link_executable (info) |
e278ae05 | 6577 | || info->gc_keep_exported |
b407645f AM |
6578 | || info->export_dynamic |
6579 | || (eh->elf.dynamic | |
6580 | && d != NULL | |
6581 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
e278ae05 | 6582 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
6583 | || !bfd_hide_sym_by_version (info->version_info, |
6584 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6585 | { |
6586 | asection *code_sec; | |
b31867b6 | 6587 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6588 | |
6589 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6590 | ||
6591 | /* Function descriptor syms cause the associated | |
6592 | function code sym section to be marked. */ | |
b31867b6 AM |
6593 | fh = defined_code_entry (eh); |
6594 | if (fh != NULL) | |
6595 | { | |
6596 | code_sec = fh->elf.root.u.def.section; | |
6597 | code_sec->flags |= SEC_KEEP; | |
6598 | } | |
64d03ab5 AM |
6599 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6600 | && opd_entry_value (eh->elf.root.u.def.section, | |
6601 | eh->elf.root.u.def.value, | |
aef36ac1 | 6602 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6603 | code_sec->flags |= SEC_KEEP; |
6604 | } | |
6605 | ||
6606 | return TRUE; | |
6607 | } | |
6608 | ||
5bd4f169 AM |
6609 | /* Return the section that should be marked against GC for a given |
6610 | relocation. */ | |
6611 | ||
6612 | static asection * | |
4ce794b7 | 6613 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6614 | struct bfd_link_info *info, |
4ce794b7 AM |
6615 | Elf_Internal_Rela *rel, |
6616 | struct elf_link_hash_entry *h, | |
6617 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6618 | { |
ccfa59ea AM |
6619 | asection *rsec; |
6620 | ||
ccfa59ea AM |
6621 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6622 | function sections, as all functions are referenced in .opd. */ | |
6623 | rsec = NULL; | |
6624 | if (get_opd_info (sec) != NULL) | |
6625 | return rsec; | |
1e2f5b6e | 6626 | |
5bd4f169 AM |
6627 | if (h != NULL) |
6628 | { | |
04c9666a | 6629 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6630 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6631 | |
4ce794b7 | 6632 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6633 | switch (r_type) |
5bd4f169 AM |
6634 | { |
6635 | case R_PPC64_GNU_VTINHERIT: | |
6636 | case R_PPC64_GNU_VTENTRY: | |
6637 | break; | |
6638 | ||
6639 | default: | |
6640 | switch (h->root.type) | |
6641 | { | |
6642 | case bfd_link_hash_defined: | |
6643 | case bfd_link_hash_defweak: | |
ccfa59ea | 6644 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6645 | fdh = defined_func_desc (eh); |
6646 | if (fdh != NULL) | |
8c5b4e52 AM |
6647 | { |
6648 | /* -mcall-aixdesc code references the dot-symbol on | |
6649 | a call reloc. Mark the function descriptor too | |
6650 | against garbage collection. */ | |
6651 | fdh->elf.mark = 1; | |
60d67dc8 AM |
6652 | if (fdh->elf.is_weakalias) |
6653 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
6654 | eh = fdh; |
6655 | } | |
1e2f5b6e AM |
6656 | |
6657 | /* Function descriptor syms cause the associated | |
6658 | function code sym section to be marked. */ | |
b31867b6 AM |
6659 | fh = defined_code_entry (eh); |
6660 | if (fh != NULL) | |
ccfa59ea AM |
6661 | { |
6662 | /* They also mark their opd section. */ | |
74f0fb50 | 6663 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6664 | |
b31867b6 | 6665 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6666 | } |
8387904d AM |
6667 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6668 | && opd_entry_value (eh->elf.root.u.def.section, | |
6669 | eh->elf.root.u.def.value, | |
aef36ac1 | 6670 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6671 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6672 | else |
1e2f5b6e AM |
6673 | rsec = h->root.u.def.section; |
6674 | break; | |
5bd4f169 AM |
6675 | |
6676 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6677 | rsec = h->root.u.c.p->section; |
6678 | break; | |
5bd4f169 AM |
6679 | |
6680 | default: | |
fb34365b | 6681 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6682 | } |
6683 | } | |
6684 | } | |
6685 | else | |
6686 | { | |
74f0fb50 | 6687 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6688 | |
6689 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6690 | opd = get_opd_info (rsec); |
6691 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6692 | { |
74f0fb50 | 6693 | rsec->gc_mark = 1; |
ccfa59ea | 6694 | |
51aecdc5 | 6695 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6696 | } |
5bd4f169 AM |
6697 | } |
6698 | ||
1e2f5b6e | 6699 | return rsec; |
5bd4f169 AM |
6700 | } |
6701 | ||
deb0e272 AM |
6702 | /* The maximum size of .sfpr. */ |
6703 | #define SFPR_MAX (218*4) | |
6704 | ||
6705 | struct sfpr_def_parms | |
6706 | { | |
699733f6 AM |
6707 | const char name[12]; |
6708 | unsigned char lo, hi; | |
deb0e272 AM |
6709 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6710 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6711 | }; | |
6712 | ||
a4b6fadd AM |
6713 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6714 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6715 | instead. */ | |
deb0e272 | 6716 | |
4dfe6ac6 | 6717 | static bfd_boolean |
a4b6fadd AM |
6718 | sfpr_define (struct bfd_link_info *info, |
6719 | const struct sfpr_def_parms *parm, | |
6720 | asection *stub_sec) | |
deb0e272 AM |
6721 | { |
6722 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6723 | unsigned int i; | |
6724 | size_t len = strlen (parm->name); | |
6725 | bfd_boolean writing = FALSE; | |
699733f6 | 6726 | char sym[16]; |
deb0e272 | 6727 | |
4dfe6ac6 NC |
6728 | if (htab == NULL) |
6729 | return FALSE; | |
6730 | ||
deb0e272 AM |
6731 | memcpy (sym, parm->name, len); |
6732 | sym[len + 2] = 0; | |
6733 | ||
6734 | for (i = parm->lo; i <= parm->hi; i++) | |
6735 | { | |
a4b6fadd | 6736 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6737 | |
6738 | sym[len + 0] = i / 10 + '0'; | |
6739 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6740 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6741 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6742 | if (stub_sec != NULL) |
deb0e272 | 6743 | { |
a4b6fadd AM |
6744 | if (h != NULL |
6745 | && h->elf.root.type == bfd_link_hash_defined | |
6746 | && h->elf.root.u.def.section == htab->sfpr) | |
6747 | { | |
6748 | struct elf_link_hash_entry *s; | |
6749 | char buf[32]; | |
6750 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6751 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6752 | if (s == NULL) | |
6753 | return FALSE; | |
6754 | if (s->root.type == bfd_link_hash_new | |
6755 | || (s->root.type = bfd_link_hash_defined | |
6756 | && s->root.u.def.section == stub_sec)) | |
6757 | { | |
6758 | s->root.type = bfd_link_hash_defined; | |
6759 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 6760 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
6761 | + h->elf.root.u.def.value); |
6762 | s->ref_regular = 1; | |
6763 | s->def_regular = 1; | |
6764 | s->ref_regular_nonweak = 1; | |
6765 | s->forced_local = 1; | |
6766 | s->non_elf = 0; | |
6767 | s->root.linker_def = 1; | |
6768 | } | |
6769 | } | |
6770 | continue; | |
6771 | } | |
6772 | if (h != NULL) | |
6773 | { | |
6774 | h->save_res = 1; | |
6775 | if (!h->elf.def_regular) | |
deb0e272 | 6776 | { |
a4b6fadd AM |
6777 | h->elf.root.type = bfd_link_hash_defined; |
6778 | h->elf.root.u.def.section = htab->sfpr; | |
6779 | h->elf.root.u.def.value = htab->sfpr->size; | |
6780 | h->elf.type = STT_FUNC; | |
6781 | h->elf.def_regular = 1; | |
b32547cd | 6782 | h->elf.non_elf = 0; |
a4b6fadd AM |
6783 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6784 | writing = TRUE; | |
deb0e272 | 6785 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6786 | { |
6787 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6788 | if (htab->sfpr->contents == NULL) | |
6789 | return FALSE; | |
6790 | } | |
deb0e272 AM |
6791 | } |
6792 | } | |
6793 | if (writing) | |
6794 | { | |
6795 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6796 | if (i != parm->hi) | |
6797 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6798 | else | |
6799 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6800 | htab->sfpr->size = p - htab->sfpr->contents; | |
6801 | } | |
6802 | } | |
6803 | ||
6804 | return TRUE; | |
6805 | } | |
6806 | ||
6807 | static bfd_byte * | |
6808 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6809 | { | |
6810 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6811 | return p + 4; | |
6812 | } | |
6813 | ||
6814 | static bfd_byte * | |
6815 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6816 | { | |
6817 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6818 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6819 | p = p + 4; |
6820 | bfd_put_32 (abfd, BLR, p); | |
6821 | return p + 4; | |
6822 | } | |
6823 | ||
6824 | static bfd_byte * | |
6825 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6826 | { | |
6827 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6828 | return p + 4; | |
6829 | } | |
6830 | ||
6831 | static bfd_byte * | |
6832 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6833 | { | |
a078d95a | 6834 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6835 | p = p + 4; |
6836 | p = restgpr0 (abfd, p, r); | |
6837 | bfd_put_32 (abfd, MTLR_R0, p); | |
6838 | p = p + 4; | |
6839 | if (r == 29) | |
6840 | { | |
6841 | p = restgpr0 (abfd, p, 30); | |
6842 | p = restgpr0 (abfd, p, 31); | |
6843 | } | |
6844 | bfd_put_32 (abfd, BLR, p); | |
6845 | return p + 4; | |
6846 | } | |
6847 | ||
6848 | static bfd_byte * | |
6849 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6850 | { | |
6851 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6852 | return p + 4; | |
6853 | } | |
6854 | ||
6855 | static bfd_byte * | |
6856 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6857 | { | |
6858 | p = savegpr1 (abfd, p, r); | |
6859 | bfd_put_32 (abfd, BLR, p); | |
6860 | return p + 4; | |
6861 | } | |
6862 | ||
6863 | static bfd_byte * | |
6864 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6865 | { | |
6866 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6867 | return p + 4; | |
6868 | } | |
6869 | ||
6870 | static bfd_byte * | |
6871 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6872 | { | |
6873 | p = restgpr1 (abfd, p, r); | |
6874 | bfd_put_32 (abfd, BLR, p); | |
6875 | return p + 4; | |
6876 | } | |
6877 | ||
6878 | static bfd_byte * | |
6879 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6880 | { | |
6881 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6882 | return p + 4; | |
6883 | } | |
6884 | ||
6885 | static bfd_byte * | |
6886 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6887 | { | |
6888 | p = savefpr (abfd, p, r); | |
a078d95a | 6889 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6890 | p = p + 4; |
6891 | bfd_put_32 (abfd, BLR, p); | |
6892 | return p + 4; | |
6893 | } | |
6894 | ||
6895 | static bfd_byte * | |
6896 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6897 | { | |
6898 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6899 | return p + 4; | |
6900 | } | |
6901 | ||
6902 | static bfd_byte * | |
6903 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6904 | { | |
a078d95a | 6905 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6906 | p = p + 4; |
6907 | p = restfpr (abfd, p, r); | |
6908 | bfd_put_32 (abfd, MTLR_R0, p); | |
6909 | p = p + 4; | |
6910 | if (r == 29) | |
6911 | { | |
6912 | p = restfpr (abfd, p, 30); | |
6913 | p = restfpr (abfd, p, 31); | |
6914 | } | |
6915 | bfd_put_32 (abfd, BLR, p); | |
6916 | return p + 4; | |
6917 | } | |
6918 | ||
6919 | static bfd_byte * | |
6920 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6921 | { | |
6922 | p = savefpr (abfd, p, r); | |
6923 | bfd_put_32 (abfd, BLR, p); | |
6924 | return p + 4; | |
6925 | } | |
6926 | ||
6927 | static bfd_byte * | |
6928 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6929 | { | |
6930 | p = restfpr (abfd, p, r); | |
6931 | bfd_put_32 (abfd, BLR, p); | |
6932 | return p + 4; | |
6933 | } | |
6934 | ||
6935 | static bfd_byte * | |
6936 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6937 | { | |
6938 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6939 | p = p + 4; | |
6940 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6941 | return p + 4; | |
6942 | } | |
6943 | ||
6944 | static bfd_byte * | |
6945 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6946 | { | |
6947 | p = savevr (abfd, p, r); | |
6948 | bfd_put_32 (abfd, BLR, p); | |
6949 | return p + 4; | |
6950 | } | |
6951 | ||
6952 | static bfd_byte * | |
6953 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6954 | { | |
6955 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6956 | p = p + 4; | |
6957 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6958 | return p + 4; | |
6959 | } | |
6960 | ||
6961 | static bfd_byte * | |
6962 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6963 | { | |
6964 | p = restvr (abfd, p, r); | |
6965 | bfd_put_32 (abfd, BLR, p); | |
6966 | return p + 4; | |
6967 | } | |
6968 | ||
e86ce104 AM |
6969 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6970 | information on function code symbol entries to their corresponding | |
6971 | function descriptor symbol entries. */ | |
deb0e272 | 6972 | |
b34976b6 | 6973 | static bfd_boolean |
4ce794b7 | 6974 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6975 | { |
e86ce104 | 6976 | struct bfd_link_info *info; |
65f38f15 | 6977 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6978 | struct ppc_link_hash_entry *fh; |
6979 | struct ppc_link_hash_entry *fdh; | |
6980 | bfd_boolean force_local; | |
5bd4f169 | 6981 | |
50bc7936 AM |
6982 | fh = (struct ppc_link_hash_entry *) h; |
6983 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6984 | return TRUE; |
e86ce104 | 6985 | |
8c5b4e52 AM |
6986 | if (!fh->is_func) |
6987 | return TRUE; | |
6988 | ||
6989 | if (fh->elf.root.root.string[0] != '.' | |
6990 | || fh->elf.root.root.string[1] == '\0') | |
6991 | return TRUE; | |
6992 | ||
4ce794b7 | 6993 | info = inf; |
65f38f15 | 6994 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6995 | if (htab == NULL) |
6996 | return FALSE; | |
5bd4f169 | 6997 | |
8c5b4e52 AM |
6998 | /* Find the corresponding function descriptor symbol. */ |
6999 | fdh = lookup_fdh (fh, htab); | |
7000 | ||
c09bdfe5 AM |
7001 | /* Resolve undefined references to dot-symbols as the value |
7002 | in the function descriptor, if we have one in a regular object. | |
7003 | This is to satisfy cases like ".quad .foo". Calls to functions | |
7004 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
7005 | if ((fh->elf.root.type == bfd_link_hash_undefined |
7006 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
7007 | && (fdh->elf.root.type == bfd_link_hash_defined | |
7008 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
7009 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
7010 | && opd_entry_value (fdh->elf.root.u.def.section, | |
7011 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 7012 | &fh->elf.root.u.def.section, |
aef36ac1 | 7013 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 7014 | { |
b31867b6 | 7015 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 7016 | fh->elf.forced_local = 1; |
b31867b6 AM |
7017 | fh->elf.def_regular = fdh->elf.def_regular; |
7018 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
7019 | } |
7020 | ||
8c5b4e52 AM |
7021 | if (!fh->elf.dynamic) |
7022 | { | |
7023 | struct plt_entry *ent; | |
5bd4f169 | 7024 | |
8c5b4e52 AM |
7025 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
7026 | if (ent->plt.refcount > 0) | |
7027 | break; | |
7028 | if (ent == NULL) | |
7029 | return TRUE; | |
7030 | } | |
5bd4f169 | 7031 | |
8c5b4e52 | 7032 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 7033 | if (fdh == NULL |
0e1862bb | 7034 | && !bfd_link_executable (info) |
50bc7936 AM |
7035 | && (fh->elf.root.type == bfd_link_hash_undefined |
7036 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
7037 | { | |
908b32fc | 7038 | fdh = make_fdh (info, fh); |
bb700d78 AM |
7039 | if (fdh == NULL) |
7040 | return FALSE; | |
50bc7936 | 7041 | } |
648cca2c | 7042 | |
8c5b4e52 | 7043 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
7044 | if (fdh != NULL |
7045 | && fdh->fake | |
8c5b4e52 AM |
7046 | && (fh->elf.root.type == bfd_link_hash_defined |
7047 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
7048 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 7049 | |
8c5b4e52 AM |
7050 | /* Transfer dynamic linking information to the function descriptor. */ |
7051 | if (fdh != NULL) | |
7052 | { | |
f5385ebf AM |
7053 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
7054 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
7055 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
7056 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
7057 | fdh->elf.dynamic |= fh->elf.dynamic; |
7058 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
7059 | || fh->elf.type == STT_FUNC | |
7060 | || fh->elf.type == STT_GNU_IFUNC); | |
7061 | move_plt_plist (fh, fdh); | |
7062 | ||
7063 | if (!fdh->elf.forced_local | |
7064 | && fh->elf.dynindx != -1) | |
7065 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
7066 | return FALSE; | |
e86ce104 AM |
7067 | } |
7068 | ||
50bc7936 AM |
7069 | /* Now that the info is on the function descriptor, clear the |
7070 | function code sym info. Any function code syms for which we | |
7071 | don't have a definition in a regular file, we force local. | |
7072 | This prevents a shared library from exporting syms that have | |
7073 | been imported from another library. Function code syms that | |
7074 | are really in the library we must leave global to prevent the | |
7075 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
7076 | force_local = (!fh->elf.def_regular |
7077 | || fdh == NULL | |
7078 | || !fdh->elf.def_regular | |
7079 | || fdh->elf.forced_local); | |
50bc7936 AM |
7080 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
7081 | ||
b34976b6 | 7082 | return TRUE; |
e86ce104 | 7083 | } |
40b8271b | 7084 | |
a4b6fadd AM |
7085 | static const struct sfpr_def_parms save_res_funcs[] = |
7086 | { | |
7087 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
7088 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
7089 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
7090 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7091 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7092 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7093 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7094 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7095 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7096 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7097 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7098 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7099 | }; | |
7100 | ||
e86ce104 | 7101 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7102 | this hook to a) provide some gcc support functions, and b) transfer |
7103 | dynamic linking information gathered so far on function code symbol | |
7104 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7105 | |
b34976b6 | 7106 | static bfd_boolean |
4ce794b7 AM |
7107 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7108 | struct bfd_link_info *info) | |
e86ce104 AM |
7109 | { |
7110 | struct ppc_link_hash_table *htab; | |
7111 | ||
7112 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7113 | if (htab == NULL) |
7114 | return FALSE; | |
7115 | ||
b32547cd AM |
7116 | /* Provide any missing _save* and _rest* functions. */ |
7117 | if (htab->sfpr != NULL) | |
7118 | { | |
7119 | unsigned int i; | |
7120 | ||
7121 | htab->sfpr->size = 0; | |
7122 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7123 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7124 | return FALSE; | |
7125 | if (htab->sfpr->size == 0) | |
7126 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7127 | } | |
7128 | ||
7129 | if (bfd_link_relocatable (info)) | |
7130 | return TRUE; | |
7131 | ||
7132 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7133 | { |
7134 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7135 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7136 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7137 | if (!htab->elf.hgot->def_regular |
7138 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7139 | { | |
7140 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7141 | htab->elf.hgot->root.u.def.value = 0; | |
7142 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7143 | htab->elf.hgot->def_regular = 1; | |
7144 | htab->elf.hgot->root.linker_def = 1; | |
7145 | } | |
dba6fa9b | 7146 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7147 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7148 | | STV_HIDDEN); | |
7149 | } | |
c66bb0ee | 7150 | |
8c5b4e52 AM |
7151 | if (htab->need_func_desc_adj) |
7152 | { | |
7153 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
7154 | htab->need_func_desc_adj = 0; | |
7155 | } | |
805fc799 | 7156 | |
b34976b6 | 7157 | return TRUE; |
e86ce104 AM |
7158 | } |
7159 | ||
98bbb1b8 | 7160 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 7161 | |
98bbb1b8 | 7162 | static asection * |
a345bc8d AM |
7163 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
7164 | { | |
7165 | struct ppc_link_hash_entry *eh; | |
7166 | struct elf_dyn_relocs *p; | |
7167 | ||
7168 | eh = (struct ppc_link_hash_entry *) h; | |
7169 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7170 | { | |
7171 | asection *s = p->sec->output_section; | |
7172 | ||
7173 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 7174 | return p->sec; |
a345bc8d | 7175 | } |
98bbb1b8 | 7176 | return NULL; |
a345bc8d AM |
7177 | } |
7178 | ||
d311bc8b | 7179 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
7180 | aliases, that apply to read-only sections. Cannot be used after |
7181 | size_dynamic_sections. */ | |
d311bc8b AM |
7182 | |
7183 | static bfd_boolean | |
7184 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7185 | { | |
7186 | struct ppc_link_hash_entry *eh; | |
7187 | ||
7188 | eh = (struct ppc_link_hash_entry *) h; | |
7189 | do | |
7190 | { | |
7191 | if (readonly_dynrelocs (&eh->elf)) | |
7192 | return TRUE; | |
ab2477e1 | 7193 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
d311bc8b AM |
7194 | } while (eh != NULL && &eh->elf != h); |
7195 | ||
7196 | return FALSE; | |
7197 | } | |
8a2058b5 | 7198 | |
8a9e8e72 AM |
7199 | /* Return whether EH has pc-relative dynamic relocs. */ |
7200 | ||
7201 | static bfd_boolean | |
7202 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
7203 | { | |
7204 | struct elf_dyn_relocs *p; | |
7205 | ||
7206 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7207 | if (p->pc_count != 0) | |
7208 | return TRUE; | |
7209 | return FALSE; | |
7210 | } | |
7211 | ||
8a2058b5 AM |
7212 | /* Return true if a global entry stub will be created for H. Valid |
7213 | for ELFv2 before plt entries have been allocated. */ | |
7214 | ||
7215 | static bfd_boolean | |
7216 | global_entry_stub (struct elf_link_hash_entry *h) | |
7217 | { | |
7218 | struct plt_entry *pent; | |
7219 | ||
7220 | if (!h->pointer_equality_needed | |
7221 | || h->def_regular) | |
7222 | return FALSE; | |
7223 | ||
7224 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7225 | if (pent->plt.refcount > 0 | |
7226 | && pent->addend == 0) | |
7227 | return TRUE; | |
7228 | ||
7229 | return FALSE; | |
7230 | } | |
7231 | ||
e86ce104 AM |
7232 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7233 | regular object. The current definition is in some section of the | |
7234 | dynamic object, but we're not including those sections. We have to | |
7235 | change the definition to something the rest of the link can | |
7236 | understand. */ | |
7237 | ||
b34976b6 | 7238 | static bfd_boolean |
4ce794b7 AM |
7239 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7240 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7241 | { |
7242 | struct ppc_link_hash_table *htab; | |
5474d94f | 7243 | asection *s, *srel; |
e86ce104 AM |
7244 | |
7245 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7246 | if (htab == NULL) |
7247 | return FALSE; | |
e86ce104 AM |
7248 | |
7249 | /* Deal with function syms. */ | |
7250 | if (h->type == STT_FUNC | |
e054468f | 7251 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7252 | || h->needs_plt) |
e86ce104 | 7253 | { |
529fe20e AM |
7254 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
7255 | || SYMBOL_CALLS_LOCAL (info, h) | |
7256 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
7257 | /* Discard dyn_relocs when non-pic if we've decided that a | |
7258 | function symbol is local and not an ifunc. We keep dynamic | |
7259 | relocs for ifuncs when local rather than always emitting a | |
7260 | plt call stub for them and defining the symbol on the call | |
7261 | stub. We can't do that for ELFv1 anyway (a function symbol | |
7262 | is defined on a descriptor, not code) and it can be faster at | |
7263 | run-time due to not needing to bounce through a stub. The | |
7264 | dyn_relocs for ifuncs will be applied even in a static | |
7265 | executable. */ | |
7266 | if (!bfd_link_pic (info) | |
7267 | && h->type != STT_GNU_IFUNC | |
7268 | && local) | |
7269 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
7270 | ||
e86ce104 AM |
7271 | /* Clear procedure linkage table information for any symbol that |
7272 | won't need a .plt entry. */ | |
411e1bfb AM |
7273 | struct plt_entry *ent; |
7274 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7275 | if (ent->plt.refcount > 0) | |
7276 | break; | |
8387904d | 7277 | if (ent == NULL |
2d7ad24e AM |
7278 | || (h->type != STT_GNU_IFUNC |
7279 | && local | |
3e04d765 AM |
7280 | && (htab->can_convert_all_inline_plt |
7281 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
7282 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 7283 | { |
411e1bfb | 7284 | h->plt.plist = NULL; |
f5385ebf | 7285 | h->needs_plt = 0; |
d1eca1e4 | 7286 | h->pointer_equality_needed = 0; |
40b8271b | 7287 | } |
8a2058b5 | 7288 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 7289 | { |
d1eca1e4 AM |
7290 | /* Taking a function's address in a read/write section |
7291 | doesn't require us to define the function symbol in the | |
7292 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
7293 | be used instead. The reason we prefer a few more dynamic |
7294 | relocs is that calling via a global entry stub costs a | |
7295 | few more instructions, and pointer_equality_needed causes | |
7296 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 7297 | if (global_entry_stub (h)) |
d1eca1e4 | 7298 | { |
ab2477e1 | 7299 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
7300 | { |
7301 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
7302 | /* If we haven't seen a branch reloc and the symbol |
7303 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
7304 | if (!h->needs_plt) |
7305 | h->plt.plist = NULL; | |
7306 | } | |
7307 | else if (!bfd_link_pic (info)) | |
7308 | /* We are going to be defining the function symbol on the | |
7309 | plt stub, so no dyn_relocs needed when non-pic. */ | |
7310 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
7311 | } |
7312 | ||
3988aed5 AM |
7313 | /* ELFv2 function symbols can't have copy relocs. */ |
7314 | return TRUE; | |
7315 | } | |
7316 | else if (!h->needs_plt | |
ab2477e1 | 7317 | && !readonly_dynrelocs (h)) |
3988aed5 | 7318 | { |
04383fd1 AM |
7319 | /* If we haven't seen a branch reloc and the symbol isn't an |
7320 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
7321 | h->plt.plist = NULL; |
7322 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
7323 | return TRUE; |
7324 | } | |
5bd4f169 | 7325 | } |
bbd7ec4a | 7326 | else |
411e1bfb | 7327 | h->plt.plist = NULL; |
5bd4f169 AM |
7328 | |
7329 | /* If this is a weak symbol, and there is a real definition, the | |
7330 | processor independent code will have arranged for us to see the | |
7331 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7332 | if (h->is_weakalias) |
5bd4f169 | 7333 | { |
60d67dc8 AM |
7334 | struct elf_link_hash_entry *def = weakdef (h); |
7335 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7336 | h->root.u.def.section = def->root.u.def.section; | |
7337 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
7338 | if (def->root.u.def.section == htab->elf.sdynbss |
7339 | || def->root.u.def.section == htab->elf.sdynrelro) | |
7340 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 7341 | return TRUE; |
5bd4f169 AM |
7342 | } |
7343 | ||
5bd4f169 AM |
7344 | /* If we are creating a shared library, we must presume that the |
7345 | only references to the symbol are via the global offset table. | |
7346 | For such cases we need not do anything here; the relocations will | |
7347 | be handled correctly by relocate_section. */ | |
0e1862bb | 7348 | if (bfd_link_pic (info)) |
b34976b6 | 7349 | return TRUE; |
5bd4f169 | 7350 | |
65f38f15 AM |
7351 | /* If there are no references to this symbol that do not use the |
7352 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7353 | if (!h->non_got_ref) |
b34976b6 | 7354 | return TRUE; |
65f38f15 | 7355 | |
b186458a | 7356 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 7357 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 7358 | |
d93d1c80 AM |
7359 | /* If -z nocopyreloc was given, don't generate them either. */ |
7360 | || info->nocopyreloc | |
a127494f | 7361 | |
dce2246a | 7362 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 7363 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 7364 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 7365 | |
d93d1c80 AM |
7366 | /* Protected variables do not work with .dynbss. The copy in |
7367 | .dynbss won't be used by the shared library with the protected | |
7368 | definition for the variable. Text relocations are preferable | |
7369 | to an incorrect program. */ | |
7370 | || h->protected_def) | |
529fe20e | 7371 | return TRUE; |
a127494f | 7372 | |
5d35169e | 7373 | if (h->plt.plist != NULL) |
97b639ba AM |
7374 | { |
7375 | /* We should never get here, but unfortunately there are versions | |
7376 | of gcc out there that improperly (for this ABI) put initialized | |
7377 | function pointers, vtable refs and suchlike in read-only | |
7378 | sections. Allow them to proceed, but warn that this might | |
7379 | break at runtime. */ | |
25f53a85 | 7380 | info->callbacks->einfo |
c1c8c1ef | 7381 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 7382 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7383 | h->root.root.string); |
7384 | } | |
5d35169e AM |
7385 | |
7386 | /* This is a reference to a symbol defined by a dynamic object which | |
7387 | is not a function. */ | |
7388 | ||
5bd4f169 AM |
7389 | /* We must allocate the symbol in our .dynbss section, which will |
7390 | become part of the .bss section of the executable. There will be | |
7391 | an entry for this symbol in the .dynsym section. The dynamic | |
7392 | object will contain position independent code, so all references | |
7393 | from the dynamic object to this symbol will go through the global | |
7394 | offset table. The dynamic linker will use the .dynsym entry to | |
7395 | determine the address it must put in the global offset table, so | |
7396 | both the dynamic object and the regular object will refer to the | |
7397 | same memory location for the variable. */ | |
5474d94f AM |
7398 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7399 | { | |
7400 | s = htab->elf.sdynrelro; | |
7401 | srel = htab->elf.sreldynrelro; | |
7402 | } | |
7403 | else | |
7404 | { | |
7405 | s = htab->elf.sdynbss; | |
7406 | srel = htab->elf.srelbss; | |
7407 | } | |
1d7e9d18 | 7408 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7409 | { |
4a7e5234 AM |
7410 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
7411 | linker to copy the initial value out of the dynamic object | |
7412 | and into the runtime process image. */ | |
5474d94f | 7413 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7414 | h->needs_copy = 1; |
5bd4f169 AM |
7415 | } |
7416 | ||
529fe20e AM |
7417 | /* We no longer want dyn_relocs. */ |
7418 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 7419 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7420 | } |
7421 | ||
e86ce104 AM |
7422 | /* If given a function descriptor symbol, hide both the function code |
7423 | sym and the descriptor. */ | |
7424 | static void | |
4ce794b7 AM |
7425 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7426 | struct elf_link_hash_entry *h, | |
7427 | bfd_boolean force_local) | |
e86ce104 | 7428 | { |
34814b9f | 7429 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7430 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7431 | ||
34814b9f AM |
7432 | eh = (struct ppc_link_hash_entry *) h; |
7433 | if (eh->is_func_descriptor) | |
e86ce104 | 7434 | { |
34814b9f | 7435 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7436 | |
721956f4 | 7437 | if (fh == NULL) |
d1329ca3 AM |
7438 | { |
7439 | const char *p, *q; | |
b8ac2841 | 7440 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
7441 | char save; |
7442 | ||
7443 | /* We aren't supposed to use alloca in BFD because on | |
7444 | systems which do not have alloca the version in libiberty | |
7445 | calls xmalloc, which might cause the program to crash | |
7446 | when it runs out of memory. This function doesn't have a | |
7447 | return status, so there's no way to gracefully return an | |
7448 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7449 | accessed; It's either a string in an ELF string table, |
7450 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7451 | |
34814b9f | 7452 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7453 | save = *p; |
7454 | *(char *) p = '.'; | |
34814b9f | 7455 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 7456 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7457 | *(char *) p = save; |
7458 | ||
7459 | /* Unfortunately, if it so happens that the string we were | |
7460 | looking for was allocated immediately before this string, | |
7461 | then we overwrote the string terminator. That's the only | |
7462 | reason the lookup should fail. */ | |
7463 | if (fh == NULL) | |
7464 | { | |
34814b9f AM |
7465 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7466 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7467 | --q, --p; |
34814b9f AM |
7468 | if (q < eh->elf.root.root.string && *p == '.') |
7469 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 7470 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7471 | } |
7472 | if (fh != NULL) | |
7473 | { | |
34814b9f AM |
7474 | eh->oh = fh; |
7475 | fh->oh = eh; | |
d1329ca3 AM |
7476 | } |
7477 | } | |
e86ce104 | 7478 | if (fh != NULL) |
34814b9f | 7479 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7480 | } |
7481 | } | |
7482 | ||
411e1bfb | 7483 | static bfd_boolean |
8843416a AM |
7484 | get_sym_h (struct elf_link_hash_entry **hp, |
7485 | Elf_Internal_Sym **symp, | |
7486 | asection **symsecp, | |
f961d9dd | 7487 | unsigned char **tls_maskp, |
8843416a AM |
7488 | Elf_Internal_Sym **locsymsp, |
7489 | unsigned long r_symndx, | |
7490 | bfd *ibfd) | |
411e1bfb | 7491 | { |
0ffa91dd | 7492 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7493 | |
7494 | if (r_symndx >= symtab_hdr->sh_info) | |
7495 | { | |
7496 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7497 | struct elf_link_hash_entry *h; | |
7498 | ||
7499 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7500 | h = elf_follow_link (h); |
411e1bfb AM |
7501 | |
7502 | if (hp != NULL) | |
7503 | *hp = h; | |
7504 | ||
7505 | if (symp != NULL) | |
7506 | *symp = NULL; | |
7507 | ||
7508 | if (symsecp != NULL) | |
7509 | { | |
7510 | asection *symsec = NULL; | |
7511 | if (h->root.type == bfd_link_hash_defined | |
7512 | || h->root.type == bfd_link_hash_defweak) | |
7513 | symsec = h->root.u.def.section; | |
7514 | *symsecp = symsec; | |
7515 | } | |
7516 | ||
e7b938ca | 7517 | if (tls_maskp != NULL) |
411e1bfb AM |
7518 | { |
7519 | struct ppc_link_hash_entry *eh; | |
7520 | ||
7521 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7522 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7523 | } |
7524 | } | |
7525 | else | |
7526 | { | |
7527 | Elf_Internal_Sym *sym; | |
7528 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7529 | ||
7530 | if (locsyms == NULL) | |
7531 | { | |
7532 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7533 | if (locsyms == NULL) | |
7534 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7535 | symtab_hdr->sh_info, | |
7536 | 0, NULL, NULL, NULL); | |
7537 | if (locsyms == NULL) | |
7538 | return FALSE; | |
7539 | *locsymsp = locsyms; | |
7540 | } | |
7541 | sym = locsyms + r_symndx; | |
7542 | ||
7543 | if (hp != NULL) | |
7544 | *hp = NULL; | |
7545 | ||
7546 | if (symp != NULL) | |
7547 | *symp = sym; | |
7548 | ||
7549 | if (symsecp != NULL) | |
cb33740c | 7550 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7551 | |
e7b938ca | 7552 | if (tls_maskp != NULL) |
411e1bfb AM |
7553 | { |
7554 | struct got_entry **lgot_ents; | |
f961d9dd | 7555 | unsigned char *tls_mask; |
411e1bfb | 7556 | |
e7b938ca | 7557 | tls_mask = NULL; |
411e1bfb AM |
7558 | lgot_ents = elf_local_got_ents (ibfd); |
7559 | if (lgot_ents != NULL) | |
7560 | { | |
e054468f AM |
7561 | struct plt_entry **local_plt = (struct plt_entry **) |
7562 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7563 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7564 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7565 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7566 | } |
e7b938ca | 7567 | *tls_maskp = tls_mask; |
411e1bfb AM |
7568 | } |
7569 | } | |
7570 | return TRUE; | |
7571 | } | |
7572 | ||
e7b938ca | 7573 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7574 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7575 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7576 | |
7577 | static int | |
f961d9dd | 7578 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7579 | unsigned long *toc_symndx, |
7580 | bfd_vma *toc_addend, | |
0d4792f7 | 7581 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7582 | const Elf_Internal_Rela *rel, |
7583 | bfd *ibfd) | |
411e1bfb AM |
7584 | { |
7585 | unsigned long r_symndx; | |
0d4792f7 | 7586 | int next_r; |
411e1bfb AM |
7587 | struct elf_link_hash_entry *h; |
7588 | Elf_Internal_Sym *sym; | |
7589 | asection *sec; | |
7590 | bfd_vma off; | |
7591 | ||
7592 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7593 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7594 | return 0; |
411e1bfb | 7595 | |
37da22e5 AM |
7596 | if ((*tls_maskp != NULL |
7597 | && (**tls_maskp & TLS_TLS) != 0 | |
7598 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 7599 | || sec == NULL |
6bee8834 | 7600 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7601 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7602 | return 1; |
411e1bfb AM |
7603 | |
7604 | /* Look inside a TOC section too. */ | |
7605 | if (h != NULL) | |
7606 | { | |
7607 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7608 | off = h->root.u.def.value; | |
7609 | } | |
7610 | else | |
7611 | off = sym->st_value; | |
7612 | off += rel->r_addend; | |
7613 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7614 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7615 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7616 | if (toc_symndx != NULL) |
7617 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7618 | if (toc_addend != NULL) |
7619 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7620 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7621 | return 0; | |
854b41e7 | 7622 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7623 | && (next_r == -1 || next_r == -2)) |
7624 | return 1 - next_r; | |
951fd09b | 7625 | return 1; |
411e1bfb AM |
7626 | } |
7627 | ||
3b421ab3 AM |
7628 | /* Find (or create) an entry in the tocsave hash table. */ |
7629 | ||
7630 | static struct tocsave_entry * | |
7631 | tocsave_find (struct ppc_link_hash_table *htab, | |
7632 | enum insert_option insert, | |
7633 | Elf_Internal_Sym **local_syms, | |
7634 | const Elf_Internal_Rela *irela, | |
7635 | bfd *ibfd) | |
7636 | { | |
7637 | unsigned long r_indx; | |
7638 | struct elf_link_hash_entry *h; | |
7639 | Elf_Internal_Sym *sym; | |
7640 | struct tocsave_entry ent, *p; | |
7641 | hashval_t hash; | |
7642 | struct tocsave_entry **slot; | |
7643 | ||
7644 | r_indx = ELF64_R_SYM (irela->r_info); | |
7645 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7646 | return NULL; | |
7647 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7648 | { | |
4eca0228 | 7649 | _bfd_error_handler |
871b3ab2 | 7650 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
7651 | return NULL; |
7652 | } | |
7653 | ||
7654 | if (h != NULL) | |
7655 | ent.offset = h->root.u.def.value; | |
7656 | else | |
7657 | ent.offset = sym->st_value; | |
7658 | ent.offset += irela->r_addend; | |
7659 | ||
7660 | hash = tocsave_htab_hash (&ent); | |
7661 | slot = ((struct tocsave_entry **) | |
7662 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7663 | if (slot == NULL) | |
7664 | return NULL; | |
7665 | ||
7666 | if (*slot == NULL) | |
7667 | { | |
7668 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7669 | if (p == NULL) | |
7670 | return NULL; | |
7671 | *p = ent; | |
7672 | *slot = p; | |
7673 | } | |
7674 | return *slot; | |
7675 | } | |
7676 | ||
754021d0 | 7677 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7678 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7679 | |
7680 | static bfd_boolean | |
7681 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7682 | { | |
7683 | struct ppc_link_hash_entry *eh; | |
7684 | asection *sym_sec; | |
74f0fb50 | 7685 | struct _opd_sec_data *opd; |
754021d0 AM |
7686 | |
7687 | if (h->root.type == bfd_link_hash_indirect) | |
7688 | return TRUE; | |
7689 | ||
754021d0 AM |
7690 | if (h->root.type != bfd_link_hash_defined |
7691 | && h->root.type != bfd_link_hash_defweak) | |
7692 | return TRUE; | |
7693 | ||
7694 | eh = (struct ppc_link_hash_entry *) h; | |
7695 | if (eh->adjust_done) | |
7696 | return TRUE; | |
7697 | ||
7698 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7699 | opd = get_opd_info (sym_sec); |
7700 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7701 | { |
51aecdc5 | 7702 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7703 | if (adjust == -1) |
7704 | { | |
7705 | /* This entry has been deleted. */ | |
b3fac117 | 7706 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7707 | if (dsec == NULL) |
7708 | { | |
7709 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7710 | if (discarded_section (dsec)) |
81688140 | 7711 | { |
b3fac117 | 7712 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7713 | break; |
7714 | } | |
7715 | } | |
4025353c | 7716 | eh->elf.root.u.def.value = 0; |
81688140 | 7717 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7718 | } |
7719 | else | |
7720 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7721 | eh->adjust_done = 1; |
7722 | } | |
7723 | return TRUE; | |
7724 | } | |
7725 | ||
8c1d1bb8 | 7726 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7727 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7728 | have already been determined. */ |
7729 | ||
7730 | static bfd_boolean | |
7731 | dec_dynrel_count (bfd_vma r_info, | |
7732 | asection *sec, | |
7733 | struct bfd_link_info *info, | |
7734 | Elf_Internal_Sym **local_syms, | |
7735 | struct elf_link_hash_entry *h, | |
19e08130 | 7736 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7737 | { |
7738 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7739 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7740 | |
7741 | /* Can this reloc be dynamic? This switch, and later tests here | |
7742 | should be kept in sync with the code in check_relocs. */ | |
7743 | r_type = ELF64_R_TYPE (r_info); | |
7744 | switch (r_type) | |
7745 | { | |
7746 | default: | |
7747 | return TRUE; | |
7748 | ||
7749 | case R_PPC64_TPREL16: | |
7750 | case R_PPC64_TPREL16_LO: | |
7751 | case R_PPC64_TPREL16_HI: | |
7752 | case R_PPC64_TPREL16_HA: | |
7753 | case R_PPC64_TPREL16_DS: | |
7754 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7755 | case R_PPC64_TPREL16_HIGH: |
7756 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7757 | case R_PPC64_TPREL16_HIGHER: |
7758 | case R_PPC64_TPREL16_HIGHERA: | |
7759 | case R_PPC64_TPREL16_HIGHEST: | |
7760 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
7761 | case R_PPC64_TPREL64: |
7762 | case R_PPC64_DTPMOD64: | |
7763 | case R_PPC64_DTPREL64: | |
7764 | case R_PPC64_ADDR64: | |
7765 | case R_PPC64_REL30: | |
7766 | case R_PPC64_REL32: | |
7767 | case R_PPC64_REL64: | |
7768 | case R_PPC64_ADDR14: | |
7769 | case R_PPC64_ADDR14_BRNTAKEN: | |
7770 | case R_PPC64_ADDR14_BRTAKEN: | |
7771 | case R_PPC64_ADDR16: | |
7772 | case R_PPC64_ADDR16_DS: | |
7773 | case R_PPC64_ADDR16_HA: | |
7774 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7775 | case R_PPC64_ADDR16_HIGH: |
7776 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7777 | case R_PPC64_ADDR16_HIGHER: |
7778 | case R_PPC64_ADDR16_HIGHERA: | |
7779 | case R_PPC64_ADDR16_HIGHEST: | |
7780 | case R_PPC64_ADDR16_HIGHESTA: | |
7781 | case R_PPC64_ADDR16_LO: | |
7782 | case R_PPC64_ADDR16_LO_DS: | |
7783 | case R_PPC64_ADDR24: | |
7784 | case R_PPC64_ADDR32: | |
7785 | case R_PPC64_UADDR16: | |
7786 | case R_PPC64_UADDR32: | |
7787 | case R_PPC64_UADDR64: | |
7788 | case R_PPC64_TOC: | |
7789 | break; | |
7790 | } | |
7791 | ||
7792 | if (local_syms != NULL) | |
7793 | { | |
7794 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7795 | bfd *ibfd = sec->owner; |
7796 | ||
7797 | r_symndx = ELF64_R_SYM (r_info); | |
7798 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7799 | return FALSE; | |
7800 | } | |
7801 | ||
0e1862bb | 7802 | if ((bfd_link_pic (info) |
1d483afe | 7803 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7804 | || (h != NULL |
198f1157 | 7805 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7806 | || h->root.type == bfd_link_hash_defweak |
7807 | || !h->def_regular)))) | |
7808 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7809 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7810 | && h != NULL |
7811 | && (h->root.type == bfd_link_hash_defweak | |
7812 | || !h->def_regular))) | |
7813 | ; | |
7814 | else | |
7815 | return TRUE; | |
7816 | ||
7817 | if (h != NULL) | |
6edfbbad | 7818 | { |
19e08130 AM |
7819 | struct elf_dyn_relocs *p; |
7820 | struct elf_dyn_relocs **pp; | |
7821 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7822 | ||
7823 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7824 | with local syms for a given section. Also, symbol flags are | |
7825 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7826 | report a dynreloc miscount. */ | |
7827 | if (*pp == NULL && info->gc_sections) | |
7828 | return TRUE; | |
7829 | ||
7830 | while ((p = *pp) != NULL) | |
60124e18 | 7831 | { |
19e08130 AM |
7832 | if (p->sec == sec) |
7833 | { | |
7834 | if (!must_be_dyn_reloc (info, r_type)) | |
7835 | p->pc_count -= 1; | |
7836 | p->count -= 1; | |
7837 | if (p->count == 0) | |
7838 | *pp = p->next; | |
7839 | return TRUE; | |
7840 | } | |
7841 | pp = &p->next; | |
60124e18 | 7842 | } |
6edfbbad | 7843 | } |
19e08130 AM |
7844 | else |
7845 | { | |
7846 | struct ppc_dyn_relocs *p; | |
7847 | struct ppc_dyn_relocs **pp; | |
7848 | void *vpp; | |
7849 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7850 | |
19e08130 AM |
7851 | if (local_syms == NULL) |
7852 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7853 | if (sym_sec == NULL) | |
7854 | sym_sec = sec; | |
c57da1a7 | 7855 | |
19e08130 AM |
7856 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7857 | pp = (struct ppc_dyn_relocs **) vpp; | |
7858 | ||
7859 | if (*pp == NULL && info->gc_sections) | |
7860 | return TRUE; | |
7861 | ||
7862 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7863 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7864 | { |
19e08130 AM |
7865 | if (p->sec == sec && p->ifunc == is_ifunc) |
7866 | { | |
7867 | p->count -= 1; | |
7868 | if (p->count == 0) | |
7869 | *pp = p->next; | |
7870 | return TRUE; | |
7871 | } | |
7872 | pp = &p->next; | |
8c1d1bb8 | 7873 | } |
8c1d1bb8 AM |
7874 | } |
7875 | ||
695344c0 | 7876 | /* xgettext:c-format */ |
cf97bcb0 AM |
7877 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7878 | sec->owner, sec); | |
8c1d1bb8 AM |
7879 | bfd_set_error (bfd_error_bad_value); |
7880 | return FALSE; | |
7881 | } | |
7882 | ||
754021d0 AM |
7883 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7884 | only remove those associated with functions in discarded link-once | |
7885 | sections, or weakly defined functions that have been overridden. It | |
7886 | would be possible to remove many more entries for statically linked | |
7887 | applications. */ | |
7888 | ||
b34976b6 | 7889 | bfd_boolean |
e7d1c40c | 7890 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7891 | { |
7892 | bfd *ibfd; | |
754021d0 | 7893 | bfd_boolean some_edited = FALSE; |
3f764659 | 7894 | asection *need_pad = NULL; |
e7d1c40c AM |
7895 | struct ppc_link_hash_table *htab; |
7896 | ||
7897 | htab = ppc_hash_table (info); | |
7898 | if (htab == NULL) | |
7899 | return FALSE; | |
1e2f5b6e | 7900 | |
c72f2fb2 | 7901 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7902 | { |
7903 | asection *sec; | |
7904 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7905 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7906 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7907 | struct _opd_sec_data *opd; |
51aecdc5 | 7908 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7909 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7910 | |
854b41e7 AM |
7911 | if (!is_ppc64_elf (ibfd)) |
7912 | continue; | |
7913 | ||
1e2f5b6e | 7914 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7915 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7916 | continue; |
7917 | ||
dbaa2011 | 7918 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7919 | continue; |
7920 | ||
1e2f5b6e AM |
7921 | if (sec->output_section == bfd_abs_section_ptr) |
7922 | continue; | |
7923 | ||
7924 | /* Look through the section relocs. */ | |
7925 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7926 | continue; | |
7927 | ||
6cdc0ccc | 7928 | local_syms = NULL; |
0ffa91dd | 7929 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7930 | |
7931 | /* Read the relocations. */ | |
4ce794b7 | 7932 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7933 | info->keep_memory); |
1e2f5b6e | 7934 | if (relstart == NULL) |
b34976b6 | 7935 | return FALSE; |
1e2f5b6e AM |
7936 | |
7937 | /* First run through the relocs to check they are sane, and to | |
7938 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7939 | need_edit = FALSE; |
51aecdc5 | 7940 | broken = FALSE; |
3f764659 | 7941 | need_pad = sec; |
1e2f5b6e | 7942 | relend = relstart + sec->reloc_count; |
50bc7936 | 7943 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7944 | { |
04c9666a | 7945 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7946 | unsigned long r_symndx; |
7947 | asection *sym_sec; | |
7948 | struct elf_link_hash_entry *h; | |
7949 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7950 | bfd_vma offset; |
1e2f5b6e | 7951 | |
51aecdc5 | 7952 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7953 | only interested in the reloc pointing to a function entry |
7954 | point. */ | |
51aecdc5 AM |
7955 | offset = rel->r_offset; |
7956 | if (rel + 1 == relend | |
7957 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7958 | { |
7959 | /* If someone messes with .opd alignment then after a | |
7960 | "ld -r" we might have padding in the middle of .opd. | |
7961 | Also, there's nothing to prevent someone putting | |
7962 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7963 | optimization for them! */ |
3f764659 | 7964 | broken_opd: |
4eca0228 | 7965 | _bfd_error_handler |
871b3ab2 | 7966 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7967 | broken = TRUE; |
1e2f5b6e AM |
7968 | break; |
7969 | } | |
7970 | ||
50bc7936 AM |
7971 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7972 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7973 | { | |
4eca0228 | 7974 | _bfd_error_handler |
695344c0 | 7975 | /* xgettext:c-format */ |
871b3ab2 | 7976 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7977 | ibfd, r_type); |
51aecdc5 | 7978 | broken = TRUE; |
50bc7936 AM |
7979 | break; |
7980 | } | |
7981 | ||
1e2f5b6e | 7982 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7983 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7984 | r_symndx, ibfd)) | |
50bc7936 | 7985 | goto error_ret; |
1e2f5b6e AM |
7986 | |
7987 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7988 | { | |
411e1bfb AM |
7989 | const char *sym_name; |
7990 | if (h != NULL) | |
7991 | sym_name = h->root.root.string; | |
7992 | else | |
26c61ae5 L |
7993 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7994 | sym_sec); | |
411e1bfb | 7995 | |
4eca0228 | 7996 | _bfd_error_handler |
695344c0 | 7997 | /* xgettext:c-format */ |
871b3ab2 | 7998 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7999 | ibfd, sym_name); |
51aecdc5 | 8000 | broken = TRUE; |
1e2f5b6e AM |
8001 | break; |
8002 | } | |
8003 | ||
51020317 AM |
8004 | /* opd entries are always for functions defined in the |
8005 | current input bfd. If the symbol isn't defined in the | |
8006 | input bfd, then we won't be using the function in this | |
8007 | bfd; It must be defined in a linkonce section in another | |
8008 | bfd, or is weak. It's also possible that we are | |
8009 | discarding the function due to a linker script /DISCARD/, | |
8010 | which we test for via the output_section. */ | |
8011 | if (sym_sec->owner != ibfd | |
8012 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 8013 | need_edit = TRUE; |
1e2f5b6e | 8014 | |
50bc7936 | 8015 | rel += 2; |
51aecdc5 AM |
8016 | if (rel + 1 == relend |
8017 | || (rel + 2 < relend | |
8018 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
8019 | ++rel; | |
8020 | ||
8021 | if (rel == relend) | |
3f764659 JJ |
8022 | { |
8023 | if (sec->size == offset + 24) | |
8024 | { | |
8025 | need_pad = NULL; | |
8026 | break; | |
8027 | } | |
51aecdc5 | 8028 | if (sec->size == offset + 16) |
3f764659 JJ |
8029 | { |
8030 | cnt_16b++; | |
8031 | break; | |
8032 | } | |
8033 | goto broken_opd; | |
8034 | } | |
3f764659 JJ |
8035 | else if (rel + 1 < relend |
8036 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
8037 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
8038 | { | |
51aecdc5 AM |
8039 | if (rel[0].r_offset == offset + 16) |
8040 | cnt_16b++; | |
8041 | else if (rel[0].r_offset != offset + 24) | |
8042 | goto broken_opd; | |
3f764659 JJ |
8043 | } |
8044 | else | |
8045 | goto broken_opd; | |
1e2f5b6e AM |
8046 | } |
8047 | ||
e7d1c40c | 8048 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 8049 | |
51aecdc5 | 8050 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
8051 | { |
8052 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 8053 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 8054 | bfd_byte *rptr, *wptr; |
983bddc8 | 8055 | bfd_byte *new_contents; |
74f0fb50 AM |
8056 | bfd_size_type amt; |
8057 | ||
983bddc8 | 8058 | new_contents = NULL; |
51aecdc5 | 8059 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 8060 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 8061 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
8062 | if (opd->adjust == NULL) |
8063 | return FALSE; | |
1e2f5b6e AM |
8064 | |
8065 | /* This seems a waste of time as input .opd sections are all | |
8066 | zeros as generated by gcc, but I suppose there's no reason | |
8067 | this will always be so. We might start putting something in | |
8068 | the third word of .opd entries. */ | |
8069 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
8070 | { | |
eea6121a AM |
8071 | bfd_byte *loc; |
8072 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 8073 | { |
eea6121a AM |
8074 | if (loc != NULL) |
8075 | free (loc); | |
50bc7936 | 8076 | error_ret: |
6cdc0ccc AM |
8077 | if (local_syms != NULL |
8078 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8079 | free (local_syms); | |
6cdc0ccc AM |
8080 | if (elf_section_data (sec)->relocs != relstart) |
8081 | free (relstart); | |
b34976b6 | 8082 | return FALSE; |
6cdc0ccc | 8083 | } |
1e2f5b6e AM |
8084 | sec->contents = loc; |
8085 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8086 | } | |
8087 | ||
8088 | elf_section_data (sec)->relocs = relstart; | |
8089 | ||
3f764659 | 8090 | new_contents = sec->contents; |
3f764659 JJ |
8091 | if (add_aux_fields) |
8092 | { | |
8093 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
8094 | if (new_contents == NULL) | |
8095 | return FALSE; | |
51aecdc5 | 8096 | need_pad = NULL; |
3f764659 | 8097 | } |
b4f4e59f AM |
8098 | wptr = new_contents; |
8099 | rptr = sec->contents; | |
1e2f5b6e | 8100 | write_rel = relstart; |
51aecdc5 | 8101 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8102 | { |
50bc7936 AM |
8103 | unsigned long r_symndx; |
8104 | asection *sym_sec; | |
8105 | struct elf_link_hash_entry *h; | |
51aecdc5 | 8106 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 8107 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
8108 | long opd_ent_size; |
8109 | Elf_Internal_Rela *next_rel; | |
8110 | bfd_boolean skip; | |
50bc7936 AM |
8111 | |
8112 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8113 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 8114 | r_symndx, ibfd)) |
50bc7936 AM |
8115 | goto error_ret; |
8116 | ||
51aecdc5 AM |
8117 | next_rel = rel + 2; |
8118 | if (next_rel + 1 == relend | |
8119 | || (next_rel + 2 < relend | |
8120 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
8121 | ++next_rel; | |
8122 | ||
8123 | /* See if the .opd entry is full 24 byte or | |
8124 | 16 byte (with fd_aux entry overlapped with next | |
8125 | fd_func). */ | |
8126 | opd_ent_size = 24; | |
8127 | if (next_rel == relend) | |
1e2f5b6e | 8128 | { |
51aecdc5 | 8129 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8130 | opd_ent_size = 16; |
51aecdc5 AM |
8131 | } |
8132 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8133 | opd_ent_size = 16; | |
3f764659 | 8134 | |
51aecdc5 AM |
8135 | if (h != NULL |
8136 | && h->root.root.string[0] == '.') | |
8137 | { | |
8c5b4e52 AM |
8138 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
8139 | if (fdh != NULL) | |
8140 | { | |
8141 | fdh = ppc_follow_link (fdh); | |
8142 | if (fdh->elf.root.type != bfd_link_hash_defined | |
8143 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8144 | fdh = NULL; | |
8145 | } | |
51aecdc5 | 8146 | } |
1e2f5b6e | 8147 | |
51aecdc5 AM |
8148 | skip = (sym_sec->owner != ibfd |
8149 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8150 | if (skip) | |
8151 | { | |
8152 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8153 | { |
51aecdc5 AM |
8154 | /* Arrange for the function descriptor sym |
8155 | to be dropped. */ | |
8156 | fdh->elf.root.u.def.value = 0; | |
8157 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8158 | } |
51aecdc5 | 8159 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8160 | |
0e1862bb | 8161 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8162 | rel = next_rel; |
8163 | else | |
8164 | while (1) | |
8165 | { | |
8166 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8167 | NULL, h, sym)) | |
8168 | goto error_ret; | |
754021d0 | 8169 | |
51aecdc5 AM |
8170 | if (++rel == next_rel) |
8171 | break; | |
1e2f5b6e | 8172 | |
51aecdc5 AM |
8173 | r_symndx = ELF64_R_SYM (rel->r_info); |
8174 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8175 | r_symndx, ibfd)) | |
8176 | goto error_ret; | |
8177 | } | |
50bc7936 AM |
8178 | } |
8179 | else | |
1e2f5b6e | 8180 | { |
51aecdc5 AM |
8181 | /* We'll be keeping this opd entry. */ |
8182 | long adjust; | |
8183 | ||
8184 | if (fdh != NULL) | |
8185 | { | |
8186 | /* Redefine the function descriptor symbol to | |
8187 | this location in the opd section. It is | |
8188 | necessary to update the value here rather | |
8189 | than using an array of adjustments as we do | |
8190 | for local symbols, because various places | |
8191 | in the generic ELF code use the value | |
8192 | stored in u.def.value. */ | |
8193 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8194 | fdh->adjust_done = 1; | |
8195 | } | |
8196 | ||
8197 | /* Local syms are a bit tricky. We could | |
8198 | tweak them as they can be cached, but | |
8199 | we'd need to look through the local syms | |
8200 | for the function descriptor sym which we | |
8201 | don't have at the moment. So keep an | |
8202 | array of adjustments. */ | |
8203 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8204 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8205 | ||
8206 | if (wptr != rptr) | |
8207 | memcpy (wptr, rptr, opd_ent_size); | |
8208 | wptr += opd_ent_size; | |
8209 | if (add_aux_fields && opd_ent_size == 16) | |
8210 | { | |
8211 | memset (wptr, '\0', 8); | |
8212 | wptr += 8; | |
8213 | } | |
8214 | ||
50bc7936 | 8215 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8216 | new opd entries. */ |
8217 | for ( ; rel != next_rel; ++rel) | |
8218 | { | |
8219 | rel->r_offset += adjust; | |
8220 | if (write_rel != rel) | |
8221 | memcpy (write_rel, rel, sizeof (*rel)); | |
8222 | ++write_rel; | |
8223 | } | |
1e2f5b6e | 8224 | } |
51aecdc5 AM |
8225 | |
8226 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8227 | } |
8228 | ||
3f764659 | 8229 | sec->size = wptr - new_contents; |
1e2f5b6e | 8230 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8231 | if (add_aux_fields) |
8232 | { | |
8233 | free (sec->contents); | |
8234 | sec->contents = new_contents; | |
8235 | } | |
8236 | ||
05bf9422 | 8237 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8238 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8239 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8240 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8241 | some_edited = TRUE; |
1e2f5b6e | 8242 | } |
6cdc0ccc | 8243 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8244 | free (relstart); |
6cdc0ccc | 8245 | |
411e1bfb AM |
8246 | if (local_syms != NULL |
8247 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8248 | { | |
8249 | if (!info->keep_memory) | |
8250 | free (local_syms); | |
8251 | else | |
8252 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8253 | } | |
8254 | } | |
8255 | ||
754021d0 AM |
8256 | if (some_edited) |
8257 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8258 | ||
3f764659 JJ |
8259 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8260 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8261 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8262 | { |
8263 | bfd_byte *p; | |
8264 | ||
8265 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8266 | { | |
8267 | BFD_ASSERT (need_pad->size > 0); | |
8268 | ||
8269 | p = bfd_malloc (need_pad->size + 8); | |
8270 | if (p == NULL) | |
8271 | return FALSE; | |
699733f6 | 8272 | |
3f764659 JJ |
8273 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8274 | p, 0, need_pad->size)) | |
8275 | return FALSE; | |
8276 | ||
8277 | need_pad->contents = p; | |
8278 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8279 | } | |
8280 | else | |
8281 | { | |
8282 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8283 | if (p == NULL) | |
8284 | return FALSE; | |
8285 | ||
8286 | need_pad->contents = p; | |
8287 | } | |
8288 | ||
8289 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8290 | need_pad->size += 8; | |
8291 | } | |
8292 | ||
411e1bfb AM |
8293 | return TRUE; |
8294 | } | |
8295 | ||
3e04d765 AM |
8296 | /* Analyze inline PLT call relocations to see whether calls to locally |
8297 | defined functions can be converted to direct calls. */ | |
8298 | ||
8299 | bfd_boolean | |
8300 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
8301 | { | |
8302 | struct ppc_link_hash_table *htab; | |
8303 | bfd *ibfd; | |
8304 | asection *sec; | |
8305 | bfd_vma low_vma, high_vma, limit; | |
8306 | ||
8307 | htab = ppc_hash_table (info); | |
8308 | if (htab == NULL) | |
8309 | return FALSE; | |
8310 | ||
8311 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
8312 | reduced somewhat to cater for possible stubs that might be added | |
8313 | between the call and its destination. */ | |
8314 | if (htab->params->group_size < 0) | |
8315 | { | |
8316 | limit = -htab->params->group_size; | |
8317 | if (limit == 1) | |
8318 | limit = 0x1e00000; | |
8319 | } | |
8320 | else | |
8321 | { | |
8322 | limit = htab->params->group_size; | |
8323 | if (limit == 1) | |
8324 | limit = 0x1c00000; | |
8325 | } | |
8326 | ||
8327 | low_vma = -1; | |
8328 | high_vma = 0; | |
8329 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
8330 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
8331 | { | |
8332 | if (low_vma > sec->vma) | |
8333 | low_vma = sec->vma; | |
8334 | if (high_vma < sec->vma + sec->size) | |
8335 | high_vma = sec->vma + sec->size; | |
8336 | } | |
8337 | ||
8338 | /* If a "bl" can reach anywhere in local code sections, then we can | |
8339 | convert all inline PLT sequences to direct calls when the symbol | |
8340 | is local. */ | |
8341 | if (high_vma - low_vma < limit) | |
8342 | { | |
8343 | htab->can_convert_all_inline_plt = 1; | |
8344 | return TRUE; | |
8345 | } | |
8346 | ||
8347 | /* Otherwise, go looking through relocs for cases where a direct | |
8348 | call won't reach. Mark the symbol on any such reloc to disable | |
8349 | the optimization and keep the PLT entry as it seems likely that | |
8350 | this will be better than creating trampolines. Note that this | |
8351 | will disable the optimization for all inline PLT calls to a | |
8352 | particular symbol, not just those that won't reach. The | |
8353 | difficulty in doing a more precise optimization is that the | |
8354 | linker needs to make a decision depending on whether a | |
8355 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
8356 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
8357 | the sequence, and there is nothing that ties those relocs | |
8358 | together except their symbol. */ | |
8359 | ||
8360 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
8361 | { | |
8362 | Elf_Internal_Shdr *symtab_hdr; | |
8363 | Elf_Internal_Sym *local_syms; | |
8364 | ||
8365 | if (!is_ppc64_elf (ibfd)) | |
8366 | continue; | |
8367 | ||
8368 | local_syms = NULL; | |
8369 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8370 | ||
8371 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8372 | if (ppc64_elf_section_data (sec)->has_pltcall | |
8373 | && !bfd_is_abs_section (sec->output_section)) | |
8374 | { | |
8375 | Elf_Internal_Rela *relstart, *rel, *relend; | |
8376 | ||
8377 | /* Read the relocations. */ | |
8378 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8379 | info->keep_memory); | |
8380 | if (relstart == NULL) | |
8381 | return FALSE; | |
8382 | ||
8383 | relend = relstart + sec->reloc_count; | |
8384 | for (rel = relstart; rel < relend; ) | |
8385 | { | |
8386 | enum elf_ppc64_reloc_type r_type; | |
8387 | unsigned long r_symndx; | |
8388 | asection *sym_sec; | |
8389 | struct elf_link_hash_entry *h; | |
8390 | Elf_Internal_Sym *sym; | |
8391 | unsigned char *tls_maskp; | |
8392 | ||
8393 | r_type = ELF64_R_TYPE (rel->r_info); | |
8394 | if (r_type != R_PPC64_PLTCALL) | |
8395 | continue; | |
8396 | ||
8397 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8398 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
8399 | r_symndx, ibfd)) | |
8400 | { | |
8401 | if (elf_section_data (sec)->relocs != relstart) | |
8402 | free (relstart); | |
8403 | if (local_syms != NULL | |
8404 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8405 | free (local_syms); | |
8406 | return FALSE; | |
8407 | } | |
8408 | ||
8409 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
8410 | { | |
8411 | bfd_vma from, to; | |
8412 | if (h != NULL) | |
8413 | to = h->root.u.def.value; | |
8414 | else | |
8415 | to = sym->st_value; | |
8416 | to += (rel->r_addend | |
8417 | + sym_sec->output_offset | |
8418 | + sym_sec->output_section->vma); | |
8419 | from = (rel->r_offset | |
8420 | + sec->output_offset | |
8421 | + sec->output_section->vma); | |
8422 | if (to - from + limit < 2 * limit) | |
8423 | *tls_maskp &= ~PLT_KEEP; | |
8424 | } | |
8425 | } | |
8426 | if (elf_section_data (sec)->relocs != relstart) | |
8427 | free (relstart); | |
8428 | } | |
8429 | ||
8430 | if (local_syms != NULL | |
8431 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8432 | { | |
8433 | if (!info->keep_memory) | |
8434 | free (local_syms); | |
8435 | else | |
8436 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8437 | } | |
8438 | } | |
8439 | ||
8440 | return TRUE; | |
8441 | } | |
8442 | ||
e1918d23 | 8443 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8444 | |
e1918d23 | 8445 | asection * |
e7d1c40c | 8446 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8447 | { |
411e1bfb AM |
8448 | struct ppc_link_hash_table *htab; |
8449 | ||
411e1bfb | 8450 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8451 | if (htab == NULL) |
8452 | return NULL; | |
8453 | ||
ee67d69a AM |
8454 | if (abiversion (info->output_bfd) == 1) |
8455 | htab->opd_abi = 1; | |
8456 | ||
e7d1c40c | 8457 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8458 | htab->do_multi_toc = 0; |
8459 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8460 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8461 | |
8b5f1ed8 AM |
8462 | /* Default to --no-plt-localentry, as this option can cause problems |
8463 | with symbol interposition. For example, glibc libpthread.so and | |
8464 | libc.so duplicate many pthread symbols, with a fallback | |
8465 | implementation in libc.so. In some cases the fallback does more | |
8466 | work than the pthread implementation. __pthread_condattr_destroy | |
8467 | is one such symbol: the libpthread.so implementation is | |
8468 | localentry:0 while the libc.so implementation is localentry:8. | |
8469 | An app that "cleverly" uses dlopen to only load necessary | |
8470 | libraries at runtime may omit loading libpthread.so when not | |
8471 | running multi-threaded, which then results in the libc.so | |
8472 | fallback symbols being used and ld.so complaining. Now there | |
8473 | are workarounds in ld (see non_zero_localentry) to detect the | |
8474 | pthread situation, but that may not be the only case where | |
8475 | --plt-localentry can cause trouble. */ | |
f378ab09 | 8476 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 8477 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
8478 | if (htab->params->plt_localentry0 |
8479 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
8480 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
8481 | _bfd_error_handler |
8482 | (_("warning: --plt-localentry is especially dangerous without " | |
8483 | "ld.so support to detect ABI violations")); | |
f378ab09 | 8484 | |
3a71aa26 AM |
8485 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8486 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8487 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8488 | /* Move dynamic linking info to the function descriptor sym. */ |
8489 | if (htab->tls_get_addr != NULL) | |
8490 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8491 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8492 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8493 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8494 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8495 | { |
8496 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8497 | ||
8498 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8499 | FALSE, FALSE, TRUE); | |
8500 | if (opt != NULL) | |
8501 | func_desc_adjust (opt, info); | |
8502 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8503 | FALSE, FALSE, TRUE); | |
8504 | if (opt_fd != NULL | |
8505 | && (opt_fd->root.type == bfd_link_hash_defined | |
8506 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8507 | { | |
8508 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8509 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8510 | be calling __tls_get_addr via a plt call stub, then | |
8511 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8512 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8513 | if (htab->elf.dynamic_sections_created | |
8514 | && tga_fd != NULL | |
8515 | && (tga_fd->type == STT_FUNC | |
8516 | || tga_fd->needs_plt) | |
8517 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 8518 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
8519 | { |
8520 | struct plt_entry *ent; | |
8521 | ||
8522 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8523 | if (ent->plt.refcount > 0) | |
8524 | break; | |
8525 | if (ent != NULL) | |
8526 | { | |
8527 | tga_fd->root.type = bfd_link_hash_indirect; | |
8528 | tga_fd->root.u.i.link = &opt_fd->root; | |
8529 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 8530 | opt_fd->mark = 1; |
a7f2871e AM |
8531 | if (opt_fd->dynindx != -1) |
8532 | { | |
8533 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8534 | opt_fd->dynindx = -1; | |
8535 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8536 | opt_fd->dynstr_index); | |
8537 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8538 | return NULL; |
a7f2871e AM |
8539 | } |
8540 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8541 | tga = &htab->tls_get_addr->elf; | |
8542 | if (opt != NULL && tga != NULL) | |
8543 | { | |
8544 | tga->root.type = bfd_link_hash_indirect; | |
8545 | tga->root.u.i.link = &opt->root; | |
8546 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 8547 | opt->mark = 1; |
a7f2871e AM |
8548 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8549 | tga->forced_local); | |
8550 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8551 | } | |
8552 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8553 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8554 | if (htab->tls_get_addr != NULL) | |
8555 | { | |
8556 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8557 | htab->tls_get_addr->is_func = 1; | |
8558 | } | |
8559 | } | |
8560 | } | |
8561 | } | |
7c9cf415 AM |
8562 | else if (htab->params->tls_get_addr_opt < 0) |
8563 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8564 | } |
33c0ec9d | 8565 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8566 | } |
8387904d | 8567 | |
3a71aa26 AM |
8568 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8569 | HASH1 or HASH2. */ | |
8387904d | 8570 | |
3a71aa26 AM |
8571 | static bfd_boolean |
8572 | branch_reloc_hash_match (const bfd *ibfd, | |
8573 | const Elf_Internal_Rela *rel, | |
8574 | const struct ppc_link_hash_entry *hash1, | |
8575 | const struct ppc_link_hash_entry *hash2) | |
8576 | { | |
8577 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8578 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8579 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8580 | ||
e054468f | 8581 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8582 | { |
3a71aa26 AM |
8583 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8584 | struct elf_link_hash_entry *h; | |
8387904d | 8585 | |
3a71aa26 | 8586 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8587 | h = elf_follow_link (h); |
3a71aa26 AM |
8588 | if (h == &hash1->elf || h == &hash2->elf) |
8589 | return TRUE; | |
a48ebf4d | 8590 | } |
3a71aa26 | 8591 | return FALSE; |
951fd09b | 8592 | } |
411e1bfb | 8593 | |
951fd09b AM |
8594 | /* Run through all the TLS relocs looking for optimization |
8595 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8596 | a preliminary section layout so that we know the TLS segment | |
8597 | offsets. We can't optimize earlier because some optimizations need | |
8598 | to know the tp offset, and we need to optimize before allocating | |
8599 | dynamic relocations. */ | |
8600 | ||
8601 | bfd_boolean | |
33c0ec9d | 8602 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8603 | { |
8604 | bfd *ibfd; | |
8605 | asection *sec; | |
8606 | struct ppc_link_hash_table *htab; | |
663a1470 | 8607 | unsigned char *toc_ref; |
102890f0 | 8608 | int pass; |
951fd09b | 8609 | |
3cbc1e5e | 8610 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8611 | return TRUE; |
8612 | ||
951fd09b | 8613 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8614 | if (htab == NULL) |
8615 | return FALSE; | |
8616 | ||
663a1470 AM |
8617 | /* Make two passes over the relocs. On the first pass, mark toc |
8618 | entries involved with tls relocs, and check that tls relocs | |
8619 | involved in setting up a tls_get_addr call are indeed followed by | |
8620 | such a call. If they are not, we can't do any tls optimization. | |
8621 | On the second pass twiddle tls_mask flags to notify | |
8622 | relocate_section that optimization can be done, and adjust got | |
8623 | and plt refcounts. */ | |
8624 | toc_ref = NULL; | |
8625 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8626 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8627 | { |
8628 | Elf_Internal_Sym *locsyms = NULL; | |
8629 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8630 | ||
102890f0 AM |
8631 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8632 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8633 | { | |
8634 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8635 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8636 | |
102890f0 AM |
8637 | /* Read the relocations. */ |
8638 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8639 | info->keep_memory); | |
8640 | if (relstart == NULL) | |
2915c55b JK |
8641 | { |
8642 | free (toc_ref); | |
8643 | return FALSE; | |
8644 | } | |
411e1bfb | 8645 | |
102890f0 AM |
8646 | relend = relstart + sec->reloc_count; |
8647 | for (rel = relstart; rel < relend; rel++) | |
8648 | { | |
8649 | enum elf_ppc64_reloc_type r_type; | |
8650 | unsigned long r_symndx; | |
8651 | struct elf_link_hash_entry *h; | |
8652 | Elf_Internal_Sym *sym; | |
8653 | asection *sym_sec; | |
f961d9dd AM |
8654 | unsigned char *tls_mask; |
8655 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8656 | bfd_vma value; |
8657 | bfd_boolean ok_tprel, is_local; | |
8658 | long toc_ref_index = 0; | |
8659 | int expecting_tls_get_addr = 0; | |
663a1470 | 8660 | bfd_boolean ret = FALSE; |
411e1bfb | 8661 | |
102890f0 AM |
8662 | r_symndx = ELF64_R_SYM (rel->r_info); |
8663 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8664 | r_symndx, ibfd)) | |
8665 | { | |
8666 | err_free_rel: | |
8667 | if (elf_section_data (sec)->relocs != relstart) | |
8668 | free (relstart); | |
8669 | if (toc_ref != NULL) | |
8670 | free (toc_ref); | |
8671 | if (locsyms != NULL | |
0ffa91dd | 8672 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8673 | != (unsigned char *) locsyms)) |
8674 | free (locsyms); | |
663a1470 | 8675 | return ret; |
102890f0 | 8676 | } |
411e1bfb | 8677 | |
102890f0 AM |
8678 | if (h != NULL) |
8679 | { | |
766bc656 AM |
8680 | if (h->root.type == bfd_link_hash_defined |
8681 | || h->root.type == bfd_link_hash_defweak) | |
8682 | value = h->root.u.def.value; | |
8683 | else if (h->root.type == bfd_link_hash_undefweak) | |
8684 | value = 0; | |
8685 | else | |
663a1470 AM |
8686 | { |
8687 | found_tls_get_addr_arg = 0; | |
8688 | continue; | |
8689 | } | |
102890f0 AM |
8690 | } |
8691 | else | |
8692 | /* Symbols referenced by TLS relocs must be of type | |
8693 | STT_TLS. So no need for .opd local sym adjust. */ | |
8694 | value = sym->st_value; | |
8695 | ||
8696 | ok_tprel = FALSE; | |
8697 | is_local = FALSE; | |
8698 | if (h == NULL | |
8699 | || !h->def_dynamic) | |
8700 | { | |
8701 | is_local = TRUE; | |
766bc656 AM |
8702 | if (h != NULL |
8703 | && h->root.type == bfd_link_hash_undefweak) | |
8704 | ok_tprel = TRUE; | |
c27b8c2a AM |
8705 | else if (sym_sec != NULL |
8706 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8707 | { |
8708 | value += sym_sec->output_offset; | |
8709 | value += sym_sec->output_section->vma; | |
8710 | value -= htab->elf.tls_sec->vma; | |
8711 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8712 | < (bfd_vma) 1 << 32); | |
8713 | } | |
102890f0 | 8714 | } |
951fd09b | 8715 | |
102890f0 | 8716 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8717 | /* If this section has old-style __tls_get_addr calls |
8718 | without marker relocs, then check that each | |
8719 | __tls_get_addr call reloc is preceded by a reloc | |
8720 | that conceivably belongs to the __tls_get_addr arg | |
8721 | setup insn. If we don't find matching arg setup | |
8722 | relocs, don't do any tls optimization. */ | |
8723 | if (pass == 0 | |
8724 | && sec->has_tls_get_addr_call | |
8725 | && h != NULL | |
8726 | && (h == &htab->tls_get_addr->elf | |
8727 | || h == &htab->tls_get_addr_fd->elf) | |
8728 | && !found_tls_get_addr_arg | |
8729 | && is_branch_reloc (r_type)) | |
8730 | { | |
25f53a85 | 8731 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8732 | "TLS optimization disabled\n"), |
8733 | ibfd, sec, rel->r_offset); | |
8734 | ret = TRUE; | |
8735 | goto err_free_rel; | |
8736 | } | |
8737 | ||
8738 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8739 | switch (r_type) |
8740 | { | |
8741 | case R_PPC64_GOT_TLSLD16: | |
8742 | case R_PPC64_GOT_TLSLD16_LO: | |
8743 | expecting_tls_get_addr = 1; | |
663a1470 | 8744 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8745 | /* Fall through. */ |
102890f0 AM |
8746 | |
8747 | case R_PPC64_GOT_TLSLD16_HI: | |
8748 | case R_PPC64_GOT_TLSLD16_HA: | |
8749 | /* These relocs should never be against a symbol | |
8750 | defined in a shared lib. Leave them alone if | |
8751 | that turns out to be the case. */ | |
8752 | if (!is_local) | |
8753 | continue; | |
411e1bfb | 8754 | |
102890f0 | 8755 | /* LD -> LE */ |
411e1bfb | 8756 | tls_set = 0; |
102890f0 AM |
8757 | tls_clear = TLS_LD; |
8758 | tls_type = TLS_TLS | TLS_LD; | |
8759 | break; | |
411e1bfb | 8760 | |
102890f0 AM |
8761 | case R_PPC64_GOT_TLSGD16: |
8762 | case R_PPC64_GOT_TLSGD16_LO: | |
8763 | expecting_tls_get_addr = 1; | |
663a1470 | 8764 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8765 | /* Fall through. */ |
102890f0 AM |
8766 | |
8767 | case R_PPC64_GOT_TLSGD16_HI: | |
8768 | case R_PPC64_GOT_TLSGD16_HA: | |
8769 | if (ok_tprel) | |
8770 | /* GD -> LE */ | |
411e1bfb | 8771 | tls_set = 0; |
102890f0 AM |
8772 | else |
8773 | /* GD -> IE */ | |
8774 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8775 | tls_clear = TLS_GD; | |
8776 | tls_type = TLS_TLS | TLS_GD; | |
8777 | break; | |
8778 | ||
8779 | case R_PPC64_GOT_TPREL16_DS: | |
8780 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8781 | case R_PPC64_GOT_TPREL16_HI: | |
8782 | case R_PPC64_GOT_TPREL16_HA: | |
8783 | if (ok_tprel) | |
8784 | { | |
8785 | /* IE -> LE */ | |
8786 | tls_set = 0; | |
8787 | tls_clear = TLS_TPREL; | |
8788 | tls_type = TLS_TLS | TLS_TPREL; | |
8789 | break; | |
8790 | } | |
411e1bfb AM |
8791 | continue; |
8792 | ||
727fc41e AM |
8793 | case R_PPC64_TLSGD: |
8794 | case R_PPC64_TLSLD: | |
23cedd1d AM |
8795 | if (rel + 1 < relend |
8796 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8797 | { | |
8798 | if (pass != 0 | |
8799 | && ELF64_R_TYPE (rel[1].r_info) != R_PPC64_PLTSEQ) | |
8800 | { | |
8801 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8802 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
8803 | r_symndx, ibfd)) | |
8804 | goto err_free_rel; | |
8805 | if (h != NULL) | |
8806 | { | |
8807 | struct plt_entry *ent = NULL; | |
8808 | ||
8809 | for (ent = h->plt.plist; | |
8810 | ent != NULL; | |
8811 | ent = ent->next) | |
8812 | if (ent->addend == rel[1].r_addend) | |
8813 | break; | |
8814 | ||
8815 | if (ent != NULL | |
8816 | && ent->plt.refcount > 0) | |
8817 | ent->plt.refcount -= 1; | |
8818 | } | |
8819 | } | |
8820 | continue; | |
8821 | } | |
663a1470 | 8822 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8823 | /* Fall through. */ |
663a1470 AM |
8824 | |
8825 | case R_PPC64_TLS: | |
8826 | case R_PPC64_TOC16: | |
8827 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8828 | if (sym_sec == NULL || sym_sec != toc) |
8829 | continue; | |
8830 | ||
8831 | /* Mark this toc entry as referenced by a TLS | |
8832 | code sequence. We can do that now in the | |
8833 | case of R_PPC64_TLS, and after checking for | |
8834 | tls_get_addr for the TOC16 relocs. */ | |
8835 | if (toc_ref == NULL) | |
663a1470 AM |
8836 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8837 | if (toc_ref == NULL) | |
8838 | goto err_free_rel; | |
8839 | ||
102890f0 AM |
8840 | if (h != NULL) |
8841 | value = h->root.u.def.value; | |
8842 | else | |
8843 | value = sym->st_value; | |
8844 | value += rel->r_addend; | |
73242275 AM |
8845 | if (value % 8 != 0) |
8846 | continue; | |
8847 | BFD_ASSERT (value < toc->size | |
8848 | && toc->output_offset % 8 == 0); | |
663a1470 | 8849 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8850 | if (r_type == R_PPC64_TLS |
8851 | || r_type == R_PPC64_TLSGD | |
8852 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8853 | { |
8854 | toc_ref[toc_ref_index] = 1; | |
8855 | continue; | |
8856 | } | |
8857 | ||
8858 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8859 | continue; | |
8860 | ||
8861 | tls_set = 0; | |
8862 | tls_clear = 0; | |
8863 | expecting_tls_get_addr = 2; | |
8864 | break; | |
8865 | ||
8866 | case R_PPC64_TPREL64: | |
8867 | if (pass == 0 | |
8868 | || sec != toc | |
8869 | || toc_ref == NULL | |
663a1470 | 8870 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8871 | continue; |
8872 | if (ok_tprel) | |
8873 | { | |
8874 | /* IE -> LE */ | |
8875 | tls_set = TLS_EXPLICIT; | |
8876 | tls_clear = TLS_TPREL; | |
8877 | break; | |
8878 | } | |
8879 | continue; | |
8880 | ||
8881 | case R_PPC64_DTPMOD64: | |
8882 | if (pass == 0 | |
8883 | || sec != toc | |
8884 | || toc_ref == NULL | |
663a1470 | 8885 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8886 | continue; |
8887 | if (rel + 1 < relend | |
8888 | && (rel[1].r_info | |
8889 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8890 | && rel[1].r_offset == rel->r_offset + 8) | |
8891 | { | |
8892 | if (ok_tprel) | |
8893 | /* GD -> LE */ | |
8894 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8895 | else | |
8896 | /* GD -> IE */ | |
8897 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8898 | tls_clear = TLS_GD; | |
8899 | } | |
8900 | else | |
8901 | { | |
8902 | if (!is_local) | |
8903 | continue; | |
8904 | ||
8905 | /* LD -> LE */ | |
8906 | tls_set = TLS_EXPLICIT; | |
8907 | tls_clear = TLS_LD; | |
8908 | } | |
8909 | break; | |
8910 | ||
8911 | default: | |
8912 | continue; | |
8913 | } | |
8914 | ||
8915 | if (pass == 0) | |
8916 | { | |
727fc41e AM |
8917 | if (!expecting_tls_get_addr |
8918 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8919 | continue; |
8920 | ||
3a71aa26 AM |
8921 | if (rel + 1 < relend |
8922 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8923 | htab->tls_get_addr, | |
8924 | htab->tls_get_addr_fd)) | |
102890f0 | 8925 | { |
3a71aa26 | 8926 | if (expecting_tls_get_addr == 2) |
102890f0 | 8927 | { |
3a71aa26 | 8928 | /* Check for toc tls entries. */ |
f961d9dd | 8929 | unsigned char *toc_tls; |
3a71aa26 AM |
8930 | int retval; |
8931 | ||
8932 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8933 | &locsyms, | |
8934 | rel, ibfd); | |
8935 | if (retval == 0) | |
8936 | goto err_free_rel; | |
663a1470 AM |
8937 | if (toc_tls != NULL) |
8938 | { | |
37da22e5 AM |
8939 | if ((*toc_tls & TLS_TLS) != 0 |
8940 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8941 | found_tls_get_addr_arg = 1; |
8942 | if (retval > 1) | |
8943 | toc_ref[toc_ref_index] = 1; | |
8944 | } | |
102890f0 | 8945 | } |
3a71aa26 | 8946 | continue; |
102890f0 AM |
8947 | } |
8948 | ||
102890f0 AM |
8949 | /* Uh oh, we didn't find the expected call. We |
8950 | could just mark this symbol to exclude it | |
8951 | from tls optimization but it's safer to skip | |
663a1470 | 8952 | the entire optimization. */ |
695344c0 | 8953 | /* xgettext:c-format */ |
25f53a85 | 8954 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8955 | "TLS optimization disabled\n"), |
8956 | ibfd, sec, rel->r_offset); | |
8957 | ret = TRUE; | |
8958 | goto err_free_rel; | |
102890f0 AM |
8959 | } |
8960 | ||
37da22e5 AM |
8961 | /* If we don't have old-style __tls_get_addr calls |
8962 | without TLSGD/TLSLD marker relocs, and we haven't | |
8963 | found a new-style __tls_get_addr call with a | |
8964 | marker for this symbol, then we either have a | |
8965 | broken object file or an -mlongcall style | |
8966 | indirect call to __tls_get_addr without a marker. | |
8967 | Disable optimization in this case. */ | |
8968 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8969 | && (tls_set & TLS_EXPLICIT) == 0 | |
8970 | && !sec->has_tls_get_addr_call | |
8971 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
8972 | != (TLS_TLS | TLS_MARK))) | |
8973 | continue; | |
8974 | ||
23cedd1d | 8975 | if (expecting_tls_get_addr) |
102890f0 | 8976 | { |
23cedd1d AM |
8977 | struct plt_entry *ent = NULL; |
8978 | ||
8979 | if (htab->tls_get_addr != NULL) | |
8980 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8981 | ent != NULL; | |
8982 | ent = ent->next) | |
8983 | if (ent->addend == 0) | |
102890f0 | 8984 | break; |
411e1bfb | 8985 | |
23cedd1d AM |
8986 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
8987 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8988 | ent != NULL; | |
8989 | ent = ent->next) | |
8990 | if (ent->addend == 0) | |
102890f0 | 8991 | break; |
23cedd1d AM |
8992 | |
8993 | if (ent != NULL | |
8994 | && ent->plt.refcount > 0) | |
8995 | ent->plt.refcount -= 1; | |
102890f0 | 8996 | } |
411e1bfb | 8997 | |
102890f0 | 8998 | if (tls_clear == 0) |
30038c59 AM |
8999 | continue; |
9000 | ||
102890f0 AM |
9001 | if ((tls_set & TLS_EXPLICIT) == 0) |
9002 | { | |
9003 | struct got_entry *ent; | |
411e1bfb | 9004 | |
102890f0 AM |
9005 | /* Adjust got entry for this reloc. */ |
9006 | if (h != NULL) | |
9007 | ent = h->got.glist; | |
9008 | else | |
9009 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 9010 | |
102890f0 AM |
9011 | for (; ent != NULL; ent = ent->next) |
9012 | if (ent->addend == rel->r_addend | |
9013 | && ent->owner == ibfd | |
9014 | && ent->tls_type == tls_type) | |
9015 | break; | |
9016 | if (ent == NULL) | |
9017 | abort (); | |
411e1bfb | 9018 | |
102890f0 AM |
9019 | if (tls_set == 0) |
9020 | { | |
9021 | /* We managed to get rid of a got entry. */ | |
9022 | if (ent->got.refcount > 0) | |
9023 | ent->got.refcount -= 1; | |
9024 | } | |
9025 | } | |
9026 | else | |
9027 | { | |
9028 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
9029 | we'll lose one or two dyn relocs. */ | |
9030 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 9031 | NULL, h, sym)) |
102890f0 | 9032 | return FALSE; |
411e1bfb | 9033 | |
102890f0 AM |
9034 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
9035 | { | |
9036 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 9037 | NULL, h, sym)) |
102890f0 AM |
9038 | return FALSE; |
9039 | } | |
9040 | } | |
411e1bfb | 9041 | |
102890f0 AM |
9042 | *tls_mask |= tls_set; |
9043 | *tls_mask &= ~tls_clear; | |
9044 | } | |
8c1d1bb8 | 9045 | |
102890f0 AM |
9046 | if (elf_section_data (sec)->relocs != relstart) |
9047 | free (relstart); | |
9048 | } | |
411e1bfb | 9049 | |
663a1470 AM |
9050 | if (locsyms != NULL |
9051 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
9052 | { | |
9053 | if (!info->keep_memory) | |
9054 | free (locsyms); | |
9055 | else | |
9056 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
9057 | } | |
9058 | } | |
411e1bfb | 9059 | |
663a1470 AM |
9060 | if (toc_ref != NULL) |
9061 | free (toc_ref); | |
9a23f96e | 9062 | htab->do_tls_opt = 1; |
b34976b6 | 9063 | return TRUE; |
1e2f5b6e | 9064 | } |
b34976b6 | 9065 | |
c5614fa4 AM |
9066 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
9067 | the values of any global symbols in a toc section that has been | |
9068 | edited. Globals in toc sections should be a rarity, so this function | |
9069 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 9070 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
9071 | |
9072 | struct adjust_toc_info | |
9073 | { | |
9074 | asection *toc; | |
9075 | unsigned long *skip; | |
9076 | bfd_boolean global_toc_syms; | |
9077 | }; | |
9078 | ||
ba761f19 AM |
9079 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
9080 | ||
c5614fa4 AM |
9081 | static bfd_boolean |
9082 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
9083 | { | |
9084 | struct ppc_link_hash_entry *eh; | |
9085 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 9086 | unsigned long i; |
c5614fa4 | 9087 | |
c5614fa4 AM |
9088 | if (h->root.type != bfd_link_hash_defined |
9089 | && h->root.type != bfd_link_hash_defweak) | |
9090 | return TRUE; | |
9091 | ||
9092 | eh = (struct ppc_link_hash_entry *) h; | |
9093 | if (eh->adjust_done) | |
9094 | return TRUE; | |
9095 | ||
9096 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
9097 | { | |
854b41e7 AM |
9098 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
9099 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 9100 | else |
854b41e7 AM |
9101 | i = eh->elf.root.u.def.value >> 3; |
9102 | ||
ba761f19 | 9103 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 9104 | { |
4eca0228 | 9105 | _bfd_error_handler |
854b41e7 AM |
9106 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
9107 | do | |
9108 | ++i; | |
ba761f19 | 9109 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 9110 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 9111 | } |
854b41e7 AM |
9112 | |
9113 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
9114 | eh->adjust_done = 1; |
9115 | } | |
9116 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
9117 | toc_inf->global_toc_syms = TRUE; | |
9118 | ||
9119 | return TRUE; | |
9120 | } | |
9121 | ||
39eeab25 AM |
9122 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
9123 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
9124 | |
9125 | static bfd_boolean | |
39eeab25 | 9126 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 9127 | { |
39eeab25 AM |
9128 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
9129 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
9130 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
9131 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
9132 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
9133 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
9134 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
9135 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
9136 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
9137 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
9138 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
9139 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
9140 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
9141 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
9142 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
9143 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
9144 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
9145 | /* Exclude lfqu by testing reloc. If relocs are ever | |
9146 | defined for the reduced D field in psq_lu then those | |
9147 | will need testing too. */ | |
9148 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9149 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
9150 | && (insn & 1) == 0) | |
9151 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
9152 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
9153 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
9154 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9155 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
9156 | && (insn & 1) == 0)); | |
560c8763 AM |
9157 | } |
9158 | ||
c5614fa4 AM |
9159 | /* Examine all relocs referencing .toc sections in order to remove |
9160 | unused .toc entries. */ | |
9161 | ||
9162 | bfd_boolean | |
33c0ec9d | 9163 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
9164 | { |
9165 | bfd *ibfd; | |
9166 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 9167 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 9168 | |
67f0cbdb | 9169 | htab->do_toc_opt = 1; |
c5614fa4 | 9170 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 9171 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
9172 | { |
9173 | asection *toc, *sec; | |
9174 | Elf_Internal_Shdr *symtab_hdr; | |
9175 | Elf_Internal_Sym *local_syms; | |
425b145b | 9176 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
9177 | unsigned long *skip, *drop; |
9178 | unsigned char *used; | |
9179 | unsigned char *keep, last, some_unused; | |
9180 | ||
854b41e7 AM |
9181 | if (!is_ppc64_elf (ibfd)) |
9182 | continue; | |
9183 | ||
c5614fa4 AM |
9184 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
9185 | if (toc == NULL | |
92b7a70f | 9186 | || toc->size == 0 |
dbaa2011 AM |
9187 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
9188 | || discarded_section (toc)) | |
c5614fa4 AM |
9189 | continue; |
9190 | ||
425b145b | 9191 | toc_relocs = NULL; |
c5614fa4 | 9192 | local_syms = NULL; |
0ffa91dd | 9193 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
9194 | |
9195 | /* Look at sections dropped from the final link. */ | |
9196 | skip = NULL; | |
9197 | relstart = NULL; | |
9198 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9199 | { | |
9200 | if (sec->reloc_count == 0 | |
dbaa2011 | 9201 | || !discarded_section (sec) |
c5614fa4 AM |
9202 | || get_opd_info (sec) |
9203 | || (sec->flags & SEC_ALLOC) == 0 | |
9204 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9205 | continue; | |
9206 | ||
9207 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
9208 | if (relstart == NULL) | |
9209 | goto error_ret; | |
9210 | ||
9211 | /* Run through the relocs to see which toc entries might be | |
9212 | unused. */ | |
9213 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9214 | { | |
9215 | enum elf_ppc64_reloc_type r_type; | |
9216 | unsigned long r_symndx; | |
9217 | asection *sym_sec; | |
9218 | struct elf_link_hash_entry *h; | |
9219 | Elf_Internal_Sym *sym; | |
9220 | bfd_vma val; | |
9221 | ||
9222 | r_type = ELF64_R_TYPE (rel->r_info); | |
9223 | switch (r_type) | |
9224 | { | |
9225 | default: | |
9226 | continue; | |
9227 | ||
9228 | case R_PPC64_TOC16: | |
9229 | case R_PPC64_TOC16_LO: | |
9230 | case R_PPC64_TOC16_HI: | |
9231 | case R_PPC64_TOC16_HA: | |
9232 | case R_PPC64_TOC16_DS: | |
9233 | case R_PPC64_TOC16_LO_DS: | |
9234 | break; | |
9235 | } | |
9236 | ||
9237 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9238 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9239 | r_symndx, ibfd)) | |
9240 | goto error_ret; | |
9241 | ||
9242 | if (sym_sec != toc) | |
9243 | continue; | |
9244 | ||
9245 | if (h != NULL) | |
9246 | val = h->root.u.def.value; | |
9247 | else | |
9248 | val = sym->st_value; | |
9249 | val += rel->r_addend; | |
9250 | ||
9251 | if (val >= toc->size) | |
9252 | continue; | |
9253 | ||
9254 | /* Anything in the toc ought to be aligned to 8 bytes. | |
9255 | If not, don't mark as unused. */ | |
9256 | if (val & 7) | |
9257 | continue; | |
9258 | ||
9259 | if (skip == NULL) | |
9260 | { | |
854b41e7 | 9261 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
9262 | if (skip == NULL) |
9263 | goto error_ret; | |
9264 | } | |
9265 | ||
ba761f19 | 9266 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
9267 | } |
9268 | ||
9269 | if (elf_section_data (sec)->relocs != relstart) | |
9270 | free (relstart); | |
9271 | } | |
9272 | ||
ba761f19 AM |
9273 | /* For largetoc loads of address constants, we can convert |
9274 | . addis rx,2,addr@got@ha | |
9275 | . ld ry,addr@got@l(rx) | |
9276 | to | |
9277 | . addis rx,2,addr@toc@ha | |
9278 | . addi ry,rx,addr@toc@l | |
9279 | when addr is within 2G of the toc pointer. This then means | |
9280 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9281 | |
ba761f19 AM |
9282 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9283 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9284 | && toc->reloc_count != 0) | |
9285 | { | |
9286 | /* Read toc relocs. */ | |
425b145b AM |
9287 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9288 | info->keep_memory); | |
9289 | if (toc_relocs == NULL) | |
ba761f19 AM |
9290 | goto error_ret; |
9291 | ||
425b145b | 9292 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9293 | { |
9294 | enum elf_ppc64_reloc_type r_type; | |
9295 | unsigned long r_symndx; | |
9296 | asection *sym_sec; | |
9297 | struct elf_link_hash_entry *h; | |
9298 | Elf_Internal_Sym *sym; | |
9299 | bfd_vma val, addr; | |
9300 | ||
9301 | r_type = ELF64_R_TYPE (rel->r_info); | |
9302 | if (r_type != R_PPC64_ADDR64) | |
9303 | continue; | |
9304 | ||
9305 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9306 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9307 | r_symndx, ibfd)) | |
9308 | goto error_ret; | |
9309 | ||
425b145b | 9310 | if (sym_sec == NULL |
c27b8c2a | 9311 | || sym_sec->output_section == NULL |
dbaa2011 | 9312 | || discarded_section (sym_sec)) |
425b145b AM |
9313 | continue; |
9314 | ||
afe397ea | 9315 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
9316 | continue; |
9317 | ||
9318 | if (h != NULL) | |
bddc25c9 AM |
9319 | { |
9320 | if (h->type == STT_GNU_IFUNC) | |
9321 | continue; | |
9322 | val = h->root.u.def.value; | |
9323 | } | |
ba761f19 | 9324 | else |
bddc25c9 AM |
9325 | { |
9326 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9327 | continue; | |
9328 | val = sym->st_value; | |
9329 | } | |
ba761f19 AM |
9330 | val += rel->r_addend; |
9331 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9332 | ||
9333 | /* We don't yet know the exact toc pointer value, but we | |
9334 | know it will be somewhere in the toc section. Don't | |
9335 | optimize if the difference from any possible toc | |
9336 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9337 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9338 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9339 | continue; | |
9340 | ||
9341 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9342 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9343 | continue; | |
9344 | ||
9345 | if (skip == NULL) | |
9346 | { | |
9347 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9348 | if (skip == NULL) | |
9349 | goto error_ret; | |
9350 | } | |
9351 | ||
9352 | skip[rel->r_offset >> 3] | |
425b145b | 9353 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9354 | } |
ba761f19 AM |
9355 | } |
9356 | ||
c5614fa4 AM |
9357 | if (skip == NULL) |
9358 | continue; | |
9359 | ||
9360 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9361 | if (used == NULL) | |
9362 | { | |
9363 | error_ret: | |
9364 | if (local_syms != NULL | |
9365 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9366 | free (local_syms); | |
9367 | if (sec != NULL | |
9368 | && relstart != NULL | |
9369 | && elf_section_data (sec)->relocs != relstart) | |
9370 | free (relstart); | |
425b145b AM |
9371 | if (toc_relocs != NULL |
9372 | && elf_section_data (toc)->relocs != toc_relocs) | |
9373 | free (toc_relocs); | |
c5614fa4 AM |
9374 | if (skip != NULL) |
9375 | free (skip); | |
9376 | return FALSE; | |
9377 | } | |
9378 | ||
30038c59 AM |
9379 | /* Now check all kept sections that might reference the toc. |
9380 | Check the toc itself last. */ | |
9381 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9382 | : ibfd->sections); | |
c5614fa4 | 9383 | sec != NULL; |
c5614fa4 | 9384 | sec = (sec == toc ? NULL |
c5614fa4 | 9385 | : sec->next == NULL ? toc |
30038c59 | 9386 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9387 | : sec->next)) |
9388 | { | |
9389 | int repeat; | |
9390 | ||
9391 | if (sec->reloc_count == 0 | |
dbaa2011 | 9392 | || discarded_section (sec) |
c5614fa4 AM |
9393 | || get_opd_info (sec) |
9394 | || (sec->flags & SEC_ALLOC) == 0 | |
9395 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9396 | continue; | |
9397 | ||
854b41e7 AM |
9398 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9399 | info->keep_memory); | |
c5614fa4 | 9400 | if (relstart == NULL) |
2915c55b JK |
9401 | { |
9402 | free (used); | |
9403 | goto error_ret; | |
9404 | } | |
c5614fa4 AM |
9405 | |
9406 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9407 | do |
d4f1ee75 AM |
9408 | { |
9409 | repeat = 0; | |
9410 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9411 | { | |
9412 | enum elf_ppc64_reloc_type r_type; | |
9413 | unsigned long r_symndx; | |
9414 | asection *sym_sec; | |
9415 | struct elf_link_hash_entry *h; | |
9416 | Elf_Internal_Sym *sym; | |
9417 | bfd_vma val; | |
9418 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9419 | |
d4f1ee75 AM |
9420 | r_type = ELF64_R_TYPE (rel->r_info); |
9421 | switch (r_type) | |
9422 | { | |
9423 | default: | |
9424 | insn_check = no_check; | |
9425 | break; | |
98528052 | 9426 | |
d4f1ee75 AM |
9427 | case R_PPC64_GOT_TLSLD16_HA: |
9428 | case R_PPC64_GOT_TLSGD16_HA: | |
9429 | case R_PPC64_GOT_TPREL16_HA: | |
9430 | case R_PPC64_GOT_DTPREL16_HA: | |
9431 | case R_PPC64_GOT16_HA: | |
9432 | case R_PPC64_TOC16_HA: | |
9433 | insn_check = check_ha; | |
9434 | break; | |
98528052 | 9435 | |
d4f1ee75 AM |
9436 | case R_PPC64_GOT_TLSLD16_LO: |
9437 | case R_PPC64_GOT_TLSGD16_LO: | |
9438 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9439 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9440 | case R_PPC64_GOT16_LO: | |
9441 | case R_PPC64_GOT16_LO_DS: | |
9442 | case R_PPC64_TOC16_LO: | |
9443 | case R_PPC64_TOC16_LO_DS: | |
9444 | insn_check = check_lo; | |
9445 | break; | |
9446 | } | |
560c8763 | 9447 | |
d4f1ee75 AM |
9448 | if (insn_check != no_check) |
9449 | { | |
9450 | bfd_vma off = rel->r_offset & ~3; | |
9451 | unsigned char buf[4]; | |
9452 | unsigned int insn; | |
c5614fa4 | 9453 | |
d4f1ee75 AM |
9454 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9455 | { | |
9456 | free (used); | |
9457 | goto error_ret; | |
9458 | } | |
9459 | insn = bfd_get_32 (ibfd, buf); | |
9460 | if (insn_check == check_lo | |
39eeab25 | 9461 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
9462 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
9463 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9464 | { | |
9465 | char str[12]; | |
9466 | ||
9467 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9468 | sprintf (str, "%#08x", insn); | |
9469 | info->callbacks->einfo | |
695344c0 | 9470 | /* xgettext:c-format */ |
174d0a74 | 9471 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 9472 | " %s instruction\n"), |
d4f1ee75 AM |
9473 | ibfd, sec, rel->r_offset & ~3, str); |
9474 | } | |
9475 | } | |
c5614fa4 | 9476 | |
d4f1ee75 AM |
9477 | switch (r_type) |
9478 | { | |
9479 | case R_PPC64_TOC16: | |
9480 | case R_PPC64_TOC16_LO: | |
9481 | case R_PPC64_TOC16_HI: | |
9482 | case R_PPC64_TOC16_HA: | |
9483 | case R_PPC64_TOC16_DS: | |
9484 | case R_PPC64_TOC16_LO_DS: | |
9485 | /* In case we're taking addresses of toc entries. */ | |
9486 | case R_PPC64_ADDR64: | |
9487 | break; | |
c5614fa4 | 9488 | |
d4f1ee75 AM |
9489 | default: |
9490 | continue; | |
9491 | } | |
c5614fa4 | 9492 | |
d4f1ee75 AM |
9493 | r_symndx = ELF64_R_SYM (rel->r_info); |
9494 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9495 | r_symndx, ibfd)) | |
9496 | { | |
9497 | free (used); | |
9498 | goto error_ret; | |
9499 | } | |
c5614fa4 | 9500 | |
d4f1ee75 AM |
9501 | if (sym_sec != toc) |
9502 | continue; | |
c5614fa4 | 9503 | |
d4f1ee75 AM |
9504 | if (h != NULL) |
9505 | val = h->root.u.def.value; | |
9506 | else | |
9507 | val = sym->st_value; | |
9508 | val += rel->r_addend; | |
ba761f19 | 9509 | |
d4f1ee75 AM |
9510 | if (val >= toc->size) |
9511 | continue; | |
ba761f19 | 9512 | |
d4f1ee75 AM |
9513 | if ((skip[val >> 3] & can_optimize) != 0) |
9514 | { | |
9515 | bfd_vma off; | |
9516 | unsigned char opc; | |
9517 | ||
9518 | switch (r_type) | |
9519 | { | |
9520 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9521 | break; |
ba761f19 | 9522 | |
d4f1ee75 AM |
9523 | case R_PPC64_TOC16_LO_DS: |
9524 | off = rel->r_offset; | |
9525 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9526 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9527 | off, 1)) | |
9528 | { | |
9529 | free (used); | |
9530 | goto error_ret; | |
9531 | } | |
9532 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9533 | break; | |
1a0670f3 | 9534 | /* Fall through. */ |
ba761f19 | 9535 | |
d4f1ee75 AM |
9536 | default: |
9537 | /* Wrong sort of reloc, or not a ld. We may | |
9538 | as well clear ref_from_discarded too. */ | |
9539 | skip[val >> 3] = 0; | |
9540 | } | |
9541 | } | |
9542 | ||
9543 | if (sec != toc) | |
9544 | used[val >> 3] = 1; | |
9545 | /* For the toc section, we only mark as used if this | |
9546 | entry itself isn't unused. */ | |
9547 | else if ((used[rel->r_offset >> 3] | |
9548 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9549 | && !used[val >> 3]) | |
9550 | { | |
9551 | /* Do all the relocs again, to catch reference | |
9552 | chains. */ | |
9553 | repeat = 1; | |
9554 | used[val >> 3] = 1; | |
9555 | } | |
9556 | } | |
9557 | } | |
c5614fa4 | 9558 | while (repeat); |
854b41e7 AM |
9559 | |
9560 | if (elf_section_data (sec)->relocs != relstart) | |
9561 | free (relstart); | |
c5614fa4 AM |
9562 | } |
9563 | ||
9564 | /* Merge the used and skip arrays. Assume that TOC | |
9565 | doublewords not appearing as either used or unused belong | |
de194d85 | 9566 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9567 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9568 | drop < skip + (toc->size + 7) / 8; | |
9569 | ++drop, ++keep) | |
9570 | { | |
9571 | if (*keep) | |
9572 | { | |
ba761f19 AM |
9573 | *drop &= ~ref_from_discarded; |
9574 | if ((*drop & can_optimize) != 0) | |
9575 | some_unused = 1; | |
c5614fa4 AM |
9576 | last = 0; |
9577 | } | |
b140b010 | 9578 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9579 | { |
9580 | some_unused = 1; | |
ba761f19 | 9581 | last = ref_from_discarded; |
c5614fa4 AM |
9582 | } |
9583 | else | |
9584 | *drop = last; | |
9585 | } | |
9586 | ||
9587 | free (used); | |
9588 | ||
9589 | if (some_unused) | |
9590 | { | |
9591 | bfd_byte *contents, *src; | |
9592 | unsigned long off; | |
d62b3684 | 9593 | Elf_Internal_Sym *sym; |
ba761f19 | 9594 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9595 | |
9596 | /* Shuffle the toc contents, and at the same time convert the | |
9597 | skip array from booleans into offsets. */ | |
9598 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9599 | goto error_ret; | |
9600 | ||
9601 | elf_section_data (toc)->this_hdr.contents = contents; | |
9602 | ||
9603 | for (src = contents, off = 0, drop = skip; | |
9604 | src < contents + toc->size; | |
9605 | src += 8, ++drop) | |
9606 | { | |
ba761f19 AM |
9607 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9608 | off += 8; | |
c5614fa4 AM |
9609 | else if (off != 0) |
9610 | { | |
9611 | *drop = off; | |
9612 | memcpy (src - off, src, 8); | |
9613 | } | |
9614 | } | |
854b41e7 | 9615 | *drop = off; |
c5614fa4 AM |
9616 | toc->rawsize = toc->size; |
9617 | toc->size = src - contents - off; | |
9618 | ||
ba761f19 AM |
9619 | /* Adjust addends for relocs against the toc section sym, |
9620 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9621 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9622 | { | |
9623 | if (sec->reloc_count == 0 | |
dbaa2011 | 9624 | || discarded_section (sec)) |
c5614fa4 AM |
9625 | continue; |
9626 | ||
9627 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9628 | info->keep_memory); |
c5614fa4 AM |
9629 | if (relstart == NULL) |
9630 | goto error_ret; | |
9631 | ||
9632 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9633 | { | |
9634 | enum elf_ppc64_reloc_type r_type; | |
9635 | unsigned long r_symndx; | |
9636 | asection *sym_sec; | |
9637 | struct elf_link_hash_entry *h; | |
854b41e7 | 9638 | bfd_vma val; |
c5614fa4 AM |
9639 | |
9640 | r_type = ELF64_R_TYPE (rel->r_info); | |
9641 | switch (r_type) | |
9642 | { | |
9643 | default: | |
9644 | continue; | |
9645 | ||
9646 | case R_PPC64_TOC16: | |
9647 | case R_PPC64_TOC16_LO: | |
9648 | case R_PPC64_TOC16_HI: | |
9649 | case R_PPC64_TOC16_HA: | |
9650 | case R_PPC64_TOC16_DS: | |
9651 | case R_PPC64_TOC16_LO_DS: | |
9652 | case R_PPC64_ADDR64: | |
9653 | break; | |
9654 | } | |
9655 | ||
9656 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9657 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9658 | r_symndx, ibfd)) | |
9659 | goto error_ret; | |
9660 | ||
ba761f19 | 9661 | if (sym_sec != toc) |
c5614fa4 AM |
9662 | continue; |
9663 | ||
ba761f19 AM |
9664 | if (h != NULL) |
9665 | val = h->root.u.def.value; | |
9666 | else | |
9667 | { | |
9668 | val = sym->st_value; | |
9669 | if (val != 0) | |
9670 | local_toc_syms = TRUE; | |
9671 | } | |
9672 | ||
9673 | val += rel->r_addend; | |
854b41e7 AM |
9674 | |
9675 | if (val > toc->rawsize) | |
9676 | val = toc->rawsize; | |
ba761f19 AM |
9677 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9678 | continue; | |
9679 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9680 | { | |
9681 | Elf_Internal_Rela *tocrel | |
425b145b | 9682 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9683 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9684 | ||
9685 | switch (r_type) | |
9686 | { | |
9687 | case R_PPC64_TOC16_HA: | |
9688 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9689 | break; | |
9690 | ||
9691 | case R_PPC64_TOC16_LO_DS: | |
9692 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9693 | break; | |
9694 | ||
9695 | default: | |
28942f62 AM |
9696 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9697 | ppc_howto_init (); | |
b140b010 | 9698 | info->callbacks->einfo |
695344c0 | 9699 | /* xgettext:c-format */ |
174d0a74 | 9700 | (_("%H: %s references " |
b140b010 AM |
9701 | "optimized away TOC entry\n"), |
9702 | ibfd, sec, rel->r_offset, | |
9703 | ppc64_elf_howto_table[r_type]->name); | |
9704 | bfd_set_error (bfd_error_bad_value); | |
9705 | goto error_ret; | |
ba761f19 AM |
9706 | } |
9707 | rel->r_addend = tocrel->r_addend; | |
9708 | elf_section_data (sec)->relocs = relstart; | |
9709 | continue; | |
9710 | } | |
9711 | ||
9712 | if (h != NULL || sym->st_value != 0) | |
9713 | continue; | |
854b41e7 AM |
9714 | |
9715 | rel->r_addend -= skip[val >> 3]; | |
9716 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9717 | } |
854b41e7 AM |
9718 | |
9719 | if (elf_section_data (sec)->relocs != relstart) | |
9720 | free (relstart); | |
c5614fa4 AM |
9721 | } |
9722 | ||
9723 | /* We shouldn't have local or global symbols defined in the TOC, | |
9724 | but handle them anyway. */ | |
df22d223 AM |
9725 | if (local_syms != NULL) |
9726 | for (sym = local_syms; | |
9727 | sym < local_syms + symtab_hdr->sh_info; | |
9728 | ++sym) | |
9729 | if (sym->st_value != 0 | |
9730 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9731 | { | |
9732 | unsigned long i; | |
854b41e7 | 9733 | |
df22d223 AM |
9734 | if (sym->st_value > toc->rawsize) |
9735 | i = toc->rawsize >> 3; | |
9736 | else | |
9737 | i = sym->st_value >> 3; | |
854b41e7 | 9738 | |
df22d223 AM |
9739 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9740 | { | |
9741 | if (local_toc_syms) | |
4eca0228 | 9742 | _bfd_error_handler |
df22d223 AM |
9743 | (_("%s defined on removed toc entry"), |
9744 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9745 | do | |
9746 | ++i; | |
9747 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9748 | sym->st_value = (bfd_vma) i << 3; | |
9749 | } | |
d62b3684 | 9750 | |
df22d223 AM |
9751 | sym->st_value -= skip[i]; |
9752 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9753 | } | |
c5614fa4 | 9754 | |
854b41e7 | 9755 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9756 | if (toc_inf.global_toc_syms) |
9757 | { | |
9758 | toc_inf.toc = toc; | |
9759 | toc_inf.skip = skip; | |
9760 | toc_inf.global_toc_syms = FALSE; | |
9761 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9762 | &toc_inf); | |
9763 | } | |
854b41e7 AM |
9764 | |
9765 | if (toc->reloc_count != 0) | |
9766 | { | |
d4730f92 | 9767 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9768 | Elf_Internal_Rela *wrel; |
9769 | bfd_size_type sz; | |
9770 | ||
854b41e7 | 9771 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9772 | if (toc_relocs == NULL) |
9773 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9774 | info->keep_memory); | |
9775 | if (toc_relocs == NULL) | |
9776 | goto error_ret; | |
9777 | ||
425b145b AM |
9778 | wrel = toc_relocs; |
9779 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9780 | if ((skip[rel->r_offset >> 3] |
9781 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9782 | { |
9783 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9784 | wrel->r_info = rel->r_info; | |
9785 | wrel->r_addend = rel->r_addend; | |
9786 | ++wrel; | |
9787 | } | |
9788 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9789 | &local_syms, NULL, NULL)) | |
9790 | goto error_ret; | |
9791 | ||
425b145b AM |
9792 | elf_section_data (toc)->relocs = toc_relocs; |
9793 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9794 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9795 | sz = rel_hdr->sh_entsize; | |
9796 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9797 | } |
c5614fa4 | 9798 | } |
28be611c AM |
9799 | else if (toc_relocs != NULL |
9800 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9801 | free (toc_relocs); |
c5614fa4 AM |
9802 | |
9803 | if (local_syms != NULL | |
9804 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9805 | { | |
9806 | if (!info->keep_memory) | |
9807 | free (local_syms); | |
9808 | else | |
9809 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9810 | } | |
9811 | free (skip); | |
9812 | } | |
9813 | ||
9814 | return TRUE; | |
9815 | } | |
9816 | ||
1bbe0902 AM |
9817 | /* Return true iff input section I references the TOC using |
9818 | instructions limited to +/-32k offsets. */ | |
9819 | ||
9820 | bfd_boolean | |
9821 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9822 | { | |
9823 | return (is_ppc64_elf (i->owner) | |
9824 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9825 | } | |
9826 | ||
927be08e AM |
9827 | /* Allocate space for one GOT entry. */ |
9828 | ||
9829 | static void | |
9830 | allocate_got (struct elf_link_hash_entry *h, | |
9831 | struct bfd_link_info *info, | |
9832 | struct got_entry *gent) | |
9833 | { | |
9834 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9835 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9836 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9837 | ? 16 : 8); | |
9838 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9839 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9840 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9841 | ||
9842 | gent->got.offset = got->size; | |
9843 | got->size += entsize; | |
9844 | ||
19e08130 | 9845 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9846 | { |
33e44f2e | 9847 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9848 | htab->got_reli_size += rentsize; |
927be08e | 9849 | } |
f15d0b54 AM |
9850 | else if (((bfd_link_pic (info) |
9851 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9852 | && bfd_link_executable (info) | |
9853 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9854 | || (htab->elf.dynamic_sections_created |
9855 | && h->dynindx != -1 | |
9856 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9857 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9858 | { |
19e08130 | 9859 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9860 | relgot->size += rentsize; |
927be08e AM |
9861 | } |
9862 | } | |
9863 | ||
7865406b AM |
9864 | /* This function merges got entries in the same toc group. */ |
9865 | ||
9866 | static void | |
9867 | merge_got_entries (struct got_entry **pent) | |
9868 | { | |
9869 | struct got_entry *ent, *ent2; | |
9870 | ||
9871 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9872 | if (!ent->is_indirect) | |
9873 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9874 | if (!ent2->is_indirect | |
9875 | && ent2->addend == ent->addend | |
9876 | && ent2->tls_type == ent->tls_type | |
9877 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9878 | { | |
9879 | ent2->is_indirect = TRUE; | |
9880 | ent2->got.ent = ent; | |
9881 | } | |
9882 | } | |
9883 | ||
46434633 | 9884 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9885 | |
9886 | static bfd_boolean | |
46434633 AM |
9887 | ensure_undef_dynamic (struct bfd_link_info *info, |
9888 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9889 | { |
9890 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9891 | ||
9892 | if (htab->dynamic_sections_created | |
46434633 AM |
9893 | && ((info->dynamic_undefined_weak != 0 |
9894 | && h->root.type == bfd_link_hash_undefweak) | |
9895 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9896 | && h->dynindx == -1 |
9897 | && !h->forced_local | |
9898 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9899 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9900 | return TRUE; | |
9901 | } | |
9902 | ||
65f38f15 AM |
9903 | /* Allocate space in .plt, .got and associated reloc sections for |
9904 | dynamic relocs. */ | |
5bd4f169 | 9905 | |
b34976b6 | 9906 | static bfd_boolean |
4ce794b7 | 9907 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9908 | { |
65f38f15 AM |
9909 | struct bfd_link_info *info; |
9910 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9911 | asection *s; |
65f38f15 | 9912 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9913 | struct got_entry **pgent, *gent; |
5bd4f169 | 9914 | |
e92d460e | 9915 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9916 | return TRUE; |
5bd4f169 | 9917 | |
65f38f15 AM |
9918 | info = (struct bfd_link_info *) inf; |
9919 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9920 | if (htab == NULL) |
9921 | return FALSE; | |
5bd4f169 | 9922 | |
951fd09b AM |
9923 | eh = (struct ppc_link_hash_entry *) h; |
9924 | /* Run through the TLS GD got entries first if we're changing them | |
9925 | to TPREL. */ | |
37da22e5 | 9926 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
9927 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9928 | if (gent->got.refcount > 0 | |
9929 | && (gent->tls_type & TLS_GD) != 0) | |
9930 | { | |
9931 | /* This was a GD entry that has been converted to TPREL. If | |
9932 | there happens to be a TPREL entry we can use that one. */ | |
9933 | struct got_entry *ent; | |
9934 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9935 | if (ent->got.refcount > 0 | |
9936 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9937 | && ent->addend == gent->addend |
9938 | && ent->owner == gent->owner) | |
951fd09b AM |
9939 | { |
9940 | gent->got.refcount = 0; | |
9941 | break; | |
9942 | } | |
9943 | ||
9944 | /* If not, then we'll be using our own TPREL entry. */ | |
9945 | if (gent->got.refcount != 0) | |
9946 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9947 | } | |
9948 | ||
7865406b AM |
9949 | /* Remove any list entry that won't generate a word in the GOT before |
9950 | we call merge_got_entries. Otherwise we risk merging to empty | |
9951 | entries. */ | |
0b8bcf0d AM |
9952 | pgent = &h->got.glist; |
9953 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9954 | if (gent->got.refcount > 0) |
7865406b AM |
9955 | { |
9956 | if ((gent->tls_type & TLS_LD) != 0 | |
9957 | && !h->def_dynamic) | |
9958 | { | |
9959 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9960 | *pgent = gent->next; | |
9961 | } | |
9962 | else | |
9963 | pgent = &gent->next; | |
9964 | } | |
9965 | else | |
9966 | *pgent = gent->next; | |
9967 | ||
9968 | if (!htab->do_multi_toc) | |
9969 | merge_got_entries (&h->got.glist); | |
9970 | ||
9971 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9972 | if (!gent->is_indirect) | |
411e1bfb | 9973 | { |
46434633 AM |
9974 | /* Make sure this symbol is output as a dynamic symbol. */ |
9975 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9976 | return FALSE; |
65f38f15 | 9977 | |
0c8d6e5c | 9978 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9979 | abort (); |
0ffa91dd | 9980 | |
927be08e | 9981 | allocate_got (h, info, gent); |
411e1bfb | 9982 | } |
65f38f15 | 9983 | |
954b63d4 AM |
9984 | /* If no dynamic sections we can't have dynamic relocs, except for |
9985 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9986 | if (!htab->elf.dynamic_sections_created |
9987 | && h->type != STT_GNU_IFUNC) | |
9988 | eh->dyn_relocs = NULL; | |
9989 | ||
529fe20e AM |
9990 | /* Discard relocs on undefined symbols that must be local. */ |
9991 | else if (h->root.type == bfd_link_hash_undefined | |
9992 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9993 | eh->dyn_relocs = NULL; | |
9994 | ||
954b63d4 AM |
9995 | /* Also discard relocs on undefined weak syms with non-default |
9996 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9997 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
9998 | eh->dyn_relocs = NULL; |
9999 | ||
8a2058b5 | 10000 | if (eh->dyn_relocs != NULL) |
65f38f15 | 10001 | { |
8a2058b5 AM |
10002 | struct elf_dyn_relocs *p, **pp; |
10003 | ||
57e7d118 AM |
10004 | /* In the shared -Bsymbolic case, discard space allocated for |
10005 | dynamic pc-relative relocs against symbols which turn out to | |
10006 | be defined in regular objects. For the normal shared case, | |
10007 | discard space for relocs that have become local due to symbol | |
10008 | visibility changes. */ | |
10009 | ||
10010 | if (bfd_link_pic (info)) | |
65f38f15 | 10011 | { |
57e7d118 AM |
10012 | /* Relocs that use pc_count are those that appear on a call |
10013 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
10014 | can be generated via assembly. We want calls to | |
10015 | protected symbols to resolve directly to the function | |
10016 | rather than going via the plt. If people want function | |
10017 | pointer comparisons to work as expected then they should | |
10018 | avoid writing weird assembly. */ | |
10019 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
10020 | { | |
57e7d118 AM |
10021 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
10022 | { | |
10023 | p->count -= p->pc_count; | |
10024 | p->pc_count = 0; | |
10025 | if (p->count == 0) | |
10026 | *pp = p->next; | |
10027 | else | |
10028 | pp = &p->next; | |
10029 | } | |
10030 | } | |
65f38f15 | 10031 | |
954b63d4 | 10032 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 10033 | { |
46434633 AM |
10034 | /* Make sure this symbol is output as a dynamic symbol. */ |
10035 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10036 | return FALSE; |
5bd4f169 | 10037 | } |
65f38f15 | 10038 | } |
529fe20e | 10039 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 10040 | { |
8a2058b5 | 10041 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
10042 | symbols which turn out to need copy relocs or are not |
10043 | dynamic. */ | |
529fe20e AM |
10044 | if (h->dynamic_adjusted |
10045 | && !h->def_regular | |
10046 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 10047 | { |
46434633 AM |
10048 | /* Make sure this symbol is output as a dynamic symbol. */ |
10049 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10050 | return FALSE; |
dfbb6ac9 | 10051 | |
f0158f44 AM |
10052 | if (h->dynindx == -1) |
10053 | eh->dyn_relocs = NULL; | |
10054 | } | |
10055 | else | |
8a2058b5 | 10056 | eh->dyn_relocs = NULL; |
57e7d118 AM |
10057 | } |
10058 | ||
10059 | /* Finally, allocate space. */ | |
10060 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
10061 | { | |
10062 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
10063 | if (eh->elf.type == STT_GNU_IFUNC) | |
10064 | sreloc = htab->elf.irelplt; | |
10065 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 10066 | } |
65f38f15 | 10067 | } |
57e7d118 | 10068 | |
2d7ad24e AM |
10069 | /* We might need a PLT entry when the symbol |
10070 | a) is dynamic, or | |
10071 | b) is an ifunc, or | |
10072 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
10073 | d) has plt16 relocs and we are linking statically. */ | |
10074 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
10075 | || h->type == STT_GNU_IFUNC | |
10076 | || (h->needs_plt && h->dynamic_adjusted) | |
10077 | || (h->needs_plt | |
10078 | && h->def_regular | |
10079 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 10080 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
10081 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
10082 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 10083 | { |
57e7d118 AM |
10084 | struct plt_entry *pent; |
10085 | bfd_boolean doneone = FALSE; | |
10086 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
10087 | if (pent->plt.refcount > 0) | |
10088 | { | |
10089 | if (!htab->elf.dynamic_sections_created | |
10090 | || h->dynindx == -1) | |
10091 | { | |
2d7ad24e AM |
10092 | if (h->type == STT_GNU_IFUNC) |
10093 | { | |
10094 | s = htab->elf.iplt; | |
10095 | pent->plt.offset = s->size; | |
10096 | s->size += PLT_ENTRY_SIZE (htab); | |
10097 | s = htab->elf.irelplt; | |
10098 | } | |
10099 | else | |
10100 | { | |
10101 | s = htab->pltlocal; | |
10102 | pent->plt.offset = s->size; | |
10103 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10104 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
10105 | } | |
57e7d118 AM |
10106 | } |
10107 | else | |
10108 | { | |
10109 | /* If this is the first .plt entry, make room for the special | |
10110 | first entry. */ | |
10111 | s = htab->elf.splt; | |
10112 | if (s->size == 0) | |
10113 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 10114 | |
57e7d118 | 10115 | pent->plt.offset = s->size; |
65f38f15 | 10116 | |
57e7d118 AM |
10117 | /* Make room for this entry. */ |
10118 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 10119 | |
57e7d118 AM |
10120 | /* Make room for the .glink code. */ |
10121 | s = htab->glink; | |
10122 | if (s->size == 0) | |
9e390558 | 10123 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
10124 | if (htab->opd_abi) |
10125 | { | |
10126 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 10127 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
10128 | s->size += 4; |
10129 | s->size += 2*4; | |
10130 | } | |
10131 | else | |
10132 | s->size += 4; | |
65f38f15 | 10133 | |
57e7d118 AM |
10134 | /* We also need to make an entry in the .rela.plt section. */ |
10135 | s = htab->elf.srelplt; | |
10136 | } | |
2d7ad24e AM |
10137 | if (s != NULL) |
10138 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
10139 | doneone = TRUE; |
10140 | } | |
10141 | else | |
10142 | pent->plt.offset = (bfd_vma) -1; | |
10143 | if (!doneone) | |
10144 | { | |
10145 | h->plt.plist = NULL; | |
10146 | h->needs_plt = 0; | |
10147 | } | |
65f38f15 | 10148 | } |
57e7d118 | 10149 | else |
65f38f15 | 10150 | { |
57e7d118 AM |
10151 | h->plt.plist = NULL; |
10152 | h->needs_plt = 0; | |
65f38f15 AM |
10153 | } |
10154 | ||
b34976b6 | 10155 | return TRUE; |
65f38f15 AM |
10156 | } |
10157 | ||
9e390558 AM |
10158 | #define PPC_LO(v) ((v) & 0xffff) |
10159 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10160 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10161 | ||
a345bc8d AM |
10162 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
10163 | to set up space for global entry stubs. These are put in glink, | |
10164 | after the branch table. */ | |
65f38f15 | 10165 | |
b34976b6 | 10166 | static bfd_boolean |
a345bc8d | 10167 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 10168 | { |
a345bc8d AM |
10169 | struct bfd_link_info *info; |
10170 | struct ppc_link_hash_table *htab; | |
10171 | struct plt_entry *pent; | |
9e390558 | 10172 | asection *s, *plt; |
65f38f15 | 10173 | |
a345bc8d AM |
10174 | if (h->root.type == bfd_link_hash_indirect) |
10175 | return TRUE; | |
65f38f15 | 10176 | |
a345bc8d AM |
10177 | if (!h->pointer_equality_needed) |
10178 | return TRUE; | |
65f38f15 | 10179 | |
a345bc8d AM |
10180 | if (h->def_regular) |
10181 | return TRUE; | |
65f38f15 | 10182 | |
a345bc8d AM |
10183 | info = inf; |
10184 | htab = ppc_hash_table (info); | |
10185 | if (htab == NULL) | |
10186 | return FALSE; | |
10187 | ||
9e390558 AM |
10188 | s = htab->global_entry; |
10189 | plt = htab->elf.splt; | |
a345bc8d AM |
10190 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
10191 | if (pent->plt.offset != (bfd_vma) -1 | |
10192 | && pent->addend == 0) | |
10193 | { | |
afe397ea AM |
10194 | /* For ELFv2, if this symbol is not defined in a regular file |
10195 | and we are not generating a shared library or pie, then we | |
10196 | need to define the symbol in the executable on a call stub. | |
10197 | This is to avoid text relocations. */ | |
9e390558 AM |
10198 | bfd_vma off, stub_align, stub_off, stub_size; |
10199 | unsigned int align_power; | |
10200 | ||
10201 | stub_size = 16; | |
10202 | stub_off = s->size; | |
10203 | if (htab->params->plt_stub_align >= 0) | |
10204 | align_power = htab->params->plt_stub_align; | |
10205 | else | |
10206 | align_power = -htab->params->plt_stub_align; | |
10207 | /* Setting section alignment is delayed until we know it is | |
10208 | non-empty. Otherwise the .text output section will be | |
10209 | aligned at least to plt_stub_align even when no global | |
10210 | entry stubs are needed. */ | |
10211 | if (s->alignment_power < align_power) | |
10212 | s->alignment_power = align_power; | |
10213 | stub_align = (bfd_vma) 1 << align_power; | |
10214 | if (htab->params->plt_stub_align >= 0 | |
10215 | || ((((stub_off + stub_size - 1) & -stub_align) | |
10216 | - (stub_off & -stub_align)) | |
10217 | > ((stub_size - 1) & -stub_align))) | |
10218 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
10219 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
10220 | off -= stub_off + s->output_offset + s->output_section->vma; | |
10221 | /* Note that for --plt-stub-align negative we have a possible | |
10222 | dependency between stub offset and size. Break that | |
10223 | dependency by assuming the max stub size when calculating | |
10224 | the stub offset. */ | |
10225 | if (PPC_HA (off) == 0) | |
10226 | stub_size -= 4; | |
8a2058b5 | 10227 | h->root.type = bfd_link_hash_defined; |
afe397ea | 10228 | h->root.u.def.section = s; |
9e390558 AM |
10229 | h->root.u.def.value = stub_off; |
10230 | s->size = stub_off + stub_size; | |
a345bc8d AM |
10231 | break; |
10232 | } | |
10233 | return TRUE; | |
10234 | } | |
10235 | ||
10236 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
10237 | read-only sections. */ | |
10238 | ||
10239 | static bfd_boolean | |
98bbb1b8 | 10240 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 10241 | { |
98bbb1b8 AM |
10242 | asection *sec; |
10243 | ||
a345bc8d AM |
10244 | if (h->root.type == bfd_link_hash_indirect) |
10245 | return TRUE; | |
10246 | ||
98bbb1b8 AM |
10247 | sec = readonly_dynrelocs (h); |
10248 | if (sec != NULL) | |
a345bc8d | 10249 | { |
98bbb1b8 AM |
10250 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
10251 | ||
10252 | info->flags |= DF_TEXTREL; | |
10253 | info->callbacks->minfo | |
c1c8c1ef | 10254 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 10255 | sec->owner, h->root.root.string, sec); |
a345bc8d AM |
10256 | |
10257 | /* Not an error, just cut short the traversal. */ | |
10258 | return FALSE; | |
65f38f15 | 10259 | } |
b34976b6 | 10260 | return TRUE; |
65f38f15 AM |
10261 | } |
10262 | ||
10263 | /* Set the sizes of the dynamic sections. */ | |
10264 | ||
b34976b6 | 10265 | static bfd_boolean |
ee67d69a | 10266 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 10267 | struct bfd_link_info *info) |
65f38f15 AM |
10268 | { |
10269 | struct ppc_link_hash_table *htab; | |
10270 | bfd *dynobj; | |
10271 | asection *s; | |
b34976b6 | 10272 | bfd_boolean relocs; |
65f38f15 | 10273 | bfd *ibfd; |
7865406b | 10274 | struct got_entry *first_tlsld; |
65f38f15 AM |
10275 | |
10276 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10277 | if (htab == NULL) |
10278 | return FALSE; | |
10279 | ||
65f38f15 AM |
10280 | dynobj = htab->elf.dynobj; |
10281 | if (dynobj == NULL) | |
10282 | abort (); | |
10283 | ||
10284 | if (htab->elf.dynamic_sections_created) | |
10285 | { | |
10286 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10287 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10288 | { |
3d4d4302 | 10289 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10290 | if (s == NULL) |
10291 | abort (); | |
eea6121a | 10292 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10293 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10294 | } | |
10295 | } | |
10296 | ||
10297 | /* Set up .got offsets for local syms, and space for local dynamic | |
10298 | relocs. */ | |
c72f2fb2 | 10299 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10300 | { |
411e1bfb AM |
10301 | struct got_entry **lgot_ents; |
10302 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10303 | struct plt_entry **local_plt; |
10304 | struct plt_entry **end_local_plt; | |
f961d9dd | 10305 | unsigned char *lgot_masks; |
65f38f15 AM |
10306 | bfd_size_type locsymcount; |
10307 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10308 | |
0c8d6e5c | 10309 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10310 | continue; |
10311 | ||
10312 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10313 | { | |
19e08130 | 10314 | struct ppc_dyn_relocs *p; |
65f38f15 | 10315 | |
6edfbbad | 10316 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10317 | { |
ec338859 AM |
10318 | if (!bfd_is_abs_section (p->sec) |
10319 | && bfd_is_abs_section (p->sec->output_section)) | |
10320 | { | |
10321 | /* Input section has been discarded, either because | |
10322 | it is a copy of a linkonce section or due to | |
10323 | linker script /DISCARD/, so we'll be discarding | |
10324 | the relocs too. */ | |
10325 | } | |
248866a8 | 10326 | else if (p->count != 0) |
ec338859 | 10327 | { |
19e08130 AM |
10328 | asection *srel = elf_section_data (p->sec)->sreloc; |
10329 | if (p->ifunc) | |
33e44f2e | 10330 | srel = htab->elf.irelplt; |
eea6121a | 10331 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10332 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10333 | info->flags |= DF_TEXTREL; | |
ec338859 | 10334 | } |
65f38f15 AM |
10335 | } |
10336 | } | |
10337 | ||
411e1bfb AM |
10338 | lgot_ents = elf_local_got_ents (ibfd); |
10339 | if (!lgot_ents) | |
65f38f15 AM |
10340 | continue; |
10341 | ||
0ffa91dd | 10342 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10343 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10344 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10345 | local_plt = (struct plt_entry **) end_lgot_ents; |
10346 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10347 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10348 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10349 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10350 | { |
0b8bcf0d | 10351 | struct got_entry **pent, *ent; |
411e1bfb | 10352 | |
0b8bcf0d AM |
10353 | pent = lgot_ents; |
10354 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10355 | if (ent->got.refcount > 0) |
10356 | { | |
e7b938ca | 10357 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10358 | { |
927be08e | 10359 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10360 | *pent = ent->next; |
411e1bfb AM |
10361 | } |
10362 | else | |
10363 | { | |
19e08130 AM |
10364 | unsigned int ent_size = 8; |
10365 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10366 | ||
eea6121a | 10367 | ent->got.offset = s->size; |
e7b938ca | 10368 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10369 | { |
19e08130 AM |
10370 | ent_size *= 2; |
10371 | rel_size *= 2; | |
10372 | } | |
10373 | s->size += ent_size; | |
37da22e5 | 10374 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10375 | { |
33e44f2e | 10376 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10377 | htab->got_reli_size += rel_size; |
10378 | } | |
f15d0b54 AM |
10379 | else if (bfd_link_pic (info) |
10380 | && !((ent->tls_type & TLS_TPREL) != 0 | |
10381 | && bfd_link_executable (info))) | |
19e08130 AM |
10382 | { |
10383 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10384 | srel->size += rel_size; | |
927be08e | 10385 | } |
0b8bcf0d | 10386 | pent = &ent->next; |
411e1bfb AM |
10387 | } |
10388 | } | |
10389 | else | |
0b8bcf0d | 10390 | *pent = ent->next; |
65f38f15 | 10391 | } |
e054468f | 10392 | |
2d7ad24e AM |
10393 | /* Allocate space for plt calls to local syms. */ |
10394 | lgot_masks = (unsigned char *) end_local_plt; | |
10395 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10396 | { |
10397 | struct plt_entry *ent; | |
10398 | ||
10399 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10400 | if (ent->plt.refcount > 0) | |
10401 | { | |
2d7ad24e AM |
10402 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10403 | { | |
10404 | s = htab->elf.iplt; | |
10405 | ent->plt.offset = s->size; | |
10406 | s->size += PLT_ENTRY_SIZE (htab); | |
10407 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10408 | } | |
3e04d765 AM |
10409 | else if (htab->can_convert_all_inline_plt |
10410 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10411 | ent->plt.offset = (bfd_vma) -1; |
10412 | else | |
10413 | { | |
10414 | s = htab->pltlocal; | |
10415 | ent->plt.offset = s->size; | |
10416 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10417 | if (bfd_link_pic (info)) | |
10418 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10419 | } | |
e054468f AM |
10420 | } |
10421 | else | |
10422 | ent->plt.offset = (bfd_vma) -1; | |
10423 | } | |
65f38f15 AM |
10424 | } |
10425 | ||
10426 | /* Allocate global sym .plt and .got entries, and space for global | |
10427 | sym dynamic relocs. */ | |
4ce794b7 | 10428 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10429 | |
0e1862bb | 10430 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10431 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10432 | |
7865406b | 10433 | first_tlsld = NULL; |
c72f2fb2 | 10434 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10435 | { |
7865406b AM |
10436 | struct got_entry *ent; |
10437 | ||
0c8d6e5c | 10438 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10439 | continue; |
10440 | ||
7865406b AM |
10441 | ent = ppc64_tlsld_got (ibfd); |
10442 | if (ent->got.refcount > 0) | |
102890f0 | 10443 | { |
7865406b | 10444 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10445 | { |
7865406b AM |
10446 | ent->is_indirect = TRUE; |
10447 | ent->got.ent = first_tlsld; | |
10448 | } | |
10449 | else | |
10450 | { | |
10451 | if (first_tlsld == NULL) | |
10452 | first_tlsld = ent; | |
10453 | s = ppc64_elf_tdata (ibfd)->got; | |
10454 | ent->got.offset = s->size; | |
10455 | ent->owner = ibfd; | |
10456 | s->size += 16; | |
0e1862bb | 10457 | if (bfd_link_pic (info)) |
7865406b AM |
10458 | { |
10459 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10460 | srel->size += sizeof (Elf64_External_Rela); | |
10461 | } | |
102890f0 AM |
10462 | } |
10463 | } | |
10464 | else | |
7865406b | 10465 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10466 | } |
10467 | ||
65f38f15 AM |
10468 | /* We now have determined the sizes of the various dynamic sections. |
10469 | Allocate memory for them. */ | |
b34976b6 | 10470 | relocs = FALSE; |
65f38f15 AM |
10471 | for (s = dynobj->sections; s != NULL; s = s->next) |
10472 | { | |
10473 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10474 | continue; | |
10475 | ||
4ce794b7 | 10476 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10477 | /* These haven't been allocated yet; don't strip. */ |
10478 | continue; | |
33e44f2e AM |
10479 | else if (s == htab->elf.sgot |
10480 | || s == htab->elf.splt | |
10481 | || s == htab->elf.iplt | |
2d7ad24e | 10482 | || s == htab->pltlocal |
c456f082 | 10483 | || s == htab->glink |
9e390558 | 10484 | || s == htab->global_entry |
5474d94f AM |
10485 | || s == htab->elf.sdynbss |
10486 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10487 | { |
10488 | /* Strip this section if we don't need it; see the | |
10489 | comment below. */ | |
5bd4f169 | 10490 | } |
58d180e8 AM |
10491 | else if (s == htab->glink_eh_frame) |
10492 | { | |
10493 | if (!bfd_is_abs_section (s->output_section)) | |
10494 | /* Not sized yet. */ | |
10495 | continue; | |
10496 | } | |
70cc837d | 10497 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10498 | { |
c456f082 | 10499 | if (s->size != 0) |
5bd4f169 | 10500 | { |
33e44f2e | 10501 | if (s != htab->elf.srelplt) |
b34976b6 | 10502 | relocs = TRUE; |
5bd4f169 AM |
10503 | |
10504 | /* We use the reloc_count field as a counter if we need | |
10505 | to copy relocs into the output file. */ | |
10506 | s->reloc_count = 0; | |
10507 | } | |
10508 | } | |
65f38f15 | 10509 | else |
5bd4f169 AM |
10510 | { |
10511 | /* It's not one of our sections, so don't allocate space. */ | |
10512 | continue; | |
10513 | } | |
10514 | ||
eea6121a | 10515 | if (s->size == 0) |
5bd4f169 | 10516 | { |
c456f082 AM |
10517 | /* If we don't need this section, strip it from the |
10518 | output file. This is mostly to handle .rela.bss and | |
10519 | .rela.plt. We must create both sections in | |
10520 | create_dynamic_sections, because they must be created | |
10521 | before the linker maps input sections to output | |
10522 | sections. The linker does that before | |
10523 | adjust_dynamic_symbol is called, and it is that | |
10524 | function which decides whether anything needs to go | |
10525 | into these sections. */ | |
8423293d | 10526 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10527 | continue; |
10528 | } | |
10529 | ||
06bcf541 AM |
10530 | if (bfd_is_abs_section (s->output_section)) |
10531 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10532 | s->name); | |
10533 | ||
c456f082 | 10534 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10535 | continue; |
10536 | ||
65f38f15 AM |
10537 | /* Allocate memory for the section contents. We use bfd_zalloc |
10538 | here in case unused entries are not reclaimed before the | |
10539 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10540 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10541 | sections instead of garbage. | |
10542 | We also rely on the section contents being zero when writing | |
5474d94f | 10543 | the GOT and .dynrelro. */ |
eea6121a | 10544 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10545 | if (s->contents == NULL) |
b34976b6 | 10546 | return FALSE; |
5bd4f169 AM |
10547 | } |
10548 | ||
c72f2fb2 | 10549 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10550 | { |
0c8d6e5c | 10551 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10552 | continue; |
10553 | ||
e717da7e | 10554 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10555 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10556 | { |
eea6121a | 10557 | if (s->size == 0) |
8423293d | 10558 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10559 | else |
10560 | { | |
eea6121a | 10561 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10562 | if (s->contents == NULL) |
10563 | return FALSE; | |
10564 | } | |
10565 | } | |
10566 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10567 | if (s != NULL) | |
10568 | { | |
eea6121a | 10569 | if (s->size == 0) |
8423293d | 10570 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10571 | else |
10572 | { | |
eea6121a | 10573 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10574 | if (s->contents == NULL) |
10575 | return FALSE; | |
10576 | relocs = TRUE; | |
10577 | s->reloc_count = 0; | |
10578 | } | |
10579 | } | |
10580 | } | |
10581 | ||
e86ce104 | 10582 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10583 | { |
e8910a83 AM |
10584 | bfd_boolean tls_opt; |
10585 | ||
5bd4f169 AM |
10586 | /* Add some entries to the .dynamic section. We fill in the |
10587 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10588 | must add the entries now so that we get the correct size for | |
10589 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10590 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10591 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10592 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10593 | |
0e1862bb | 10594 | if (bfd_link_executable (info)) |
5bd4f169 | 10595 | { |
dc810e39 | 10596 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10597 | return FALSE; |
5bd4f169 AM |
10598 | } |
10599 | ||
33e44f2e | 10600 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10601 | { |
dc810e39 AM |
10602 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10603 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10604 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10605 | || !add_dynamic_entry (DT_JMPREL, 0) |
10606 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10607 | return FALSE; |
5bd4f169 AM |
10608 | } |
10609 | ||
ee67d69a | 10610 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10611 | { |
10612 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10613 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10614 | return FALSE; |
19397422 AM |
10615 | } |
10616 | ||
7c9cf415 | 10617 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10618 | && htab->tls_get_addr_fd != NULL |
10619 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10620 | if (tls_opt || !htab->opd_abi) | |
10621 | { | |
10622 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10623 | return FALSE; | |
10624 | } | |
a7f2871e | 10625 | |
5bd4f169 AM |
10626 | if (relocs) |
10627 | { | |
dc810e39 AM |
10628 | if (!add_dynamic_entry (DT_RELA, 0) |
10629 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10630 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10631 | return FALSE; |
5bd4f169 | 10632 | |
65f38f15 AM |
10633 | /* If any dynamic relocs apply to a read-only section, |
10634 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10635 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10636 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10637 | |
65f38f15 | 10638 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10639 | { |
65f38f15 | 10640 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10641 | return FALSE; |
5bd4f169 | 10642 | } |
5bd4f169 | 10643 | } |
5bd4f169 | 10644 | } |
65f38f15 | 10645 | #undef add_dynamic_entry |
5bd4f169 | 10646 | |
b34976b6 | 10647 | return TRUE; |
5bd4f169 AM |
10648 | } |
10649 | ||
a345bc8d AM |
10650 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10651 | ||
10652 | static bfd_boolean | |
10653 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10654 | { | |
10655 | if (h->plt.plist != NULL | |
10656 | && !h->def_regular | |
10657 | && !h->pointer_equality_needed) | |
10658 | return FALSE; | |
10659 | ||
10660 | return _bfd_elf_hash_symbol (h); | |
10661 | } | |
10662 | ||
721956f4 | 10663 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10664 | |
4ce794b7 AM |
10665 | static inline enum ppc_stub_type |
10666 | ppc_type_of_stub (asection *input_sec, | |
10667 | const Elf_Internal_Rela *rel, | |
10668 | struct ppc_link_hash_entry **hash, | |
e054468f | 10669 | struct plt_entry **plt_ent, |
6911b7dc AM |
10670 | bfd_vma destination, |
10671 | unsigned long local_off) | |
5bd4f169 | 10672 | { |
721956f4 AM |
10673 | struct ppc_link_hash_entry *h = *hash; |
10674 | bfd_vma location; | |
10675 | bfd_vma branch_offset; | |
10676 | bfd_vma max_branch_offset; | |
4ce794b7 | 10677 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10678 | |
721956f4 AM |
10679 | if (h != NULL) |
10680 | { | |
e054468f | 10681 | struct plt_entry *ent; |
7fe2b9a6 | 10682 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10683 | if (h->oh != NULL |
10684 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10685 | { |
10686 | fdh = ppc_follow_link (h->oh); | |
10687 | *hash = fdh; | |
10688 | } | |
8387904d | 10689 | |
e054468f AM |
10690 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10691 | if (ent->addend == rel->r_addend | |
10692 | && ent->plt.offset != (bfd_vma) -1) | |
10693 | { | |
e054468f AM |
10694 | *plt_ent = ent; |
10695 | return ppc_stub_plt_call; | |
10696 | } | |
5bd4f169 | 10697 | |
7fe2b9a6 AM |
10698 | /* Here, we know we don't have a plt entry. If we don't have a |
10699 | either a defined function descriptor or a defined entry symbol | |
10700 | in a regular object file, then it is pointless trying to make | |
10701 | any other type of stub. */ | |
854b41e7 AM |
10702 | if (!is_static_defined (&fdh->elf) |
10703 | && !is_static_defined (&h->elf)) | |
721956f4 | 10704 | return ppc_stub_none; |
5d1634d7 | 10705 | } |
e054468f AM |
10706 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10707 | { | |
10708 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10709 | struct plt_entry **local_plt = (struct plt_entry **) | |
10710 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10711 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10712 | ||
10713 | if (local_plt[r_symndx] != NULL) | |
10714 | { | |
10715 | struct plt_entry *ent; | |
10716 | ||
10717 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10718 | if (ent->addend == rel->r_addend | |
10719 | && ent->plt.offset != (bfd_vma) -1) | |
10720 | { | |
10721 | *plt_ent = ent; | |
10722 | return ppc_stub_plt_call; | |
10723 | } | |
10724 | } | |
10725 | } | |
5d1634d7 | 10726 | |
721956f4 AM |
10727 | /* Determine where the call point is. */ |
10728 | location = (input_sec->output_offset | |
10729 | + input_sec->output_section->vma | |
10730 | + rel->r_offset); | |
5d1634d7 | 10731 | |
721956f4 AM |
10732 | branch_offset = destination - location; |
10733 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10734 | |
721956f4 AM |
10735 | /* Determine if a long branch stub is needed. */ |
10736 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10737 | if (r_type == R_PPC64_REL14 |
10738 | || r_type == R_PPC64_REL14_BRTAKEN | |
10739 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10740 | max_branch_offset = 1 << 15; |
5d1634d7 | 10741 | |
6911b7dc | 10742 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10743 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10744 | is needed later. */ | |
10745 | return ppc_stub_long_branch; | |
5d1634d7 | 10746 | |
721956f4 | 10747 | return ppc_stub_none; |
5d1634d7 AM |
10748 | } |
10749 | ||
794e51c0 AM |
10750 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10751 | to update a plt entry in one thread and have another thread see a | |
10752 | stale zero toc entry. To avoid this we need some sort of acquire | |
10753 | barrier in the call stub. One solution is to make the load of the | |
10754 | toc word seem to appear to depend on the load of the function entry | |
10755 | word. Another solution is to test for r2 being zero, and branch to | |
10756 | the appropriate glink entry if so. | |
10757 | ||
10758 | . fake dep barrier compare | |
71a39c98 AM |
10759 | . ld 12,xxx(2) ld 12,xxx(2) |
10760 | . mtctr 12 mtctr 12 | |
10761 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10762 | . add 2,2,11 cmpldi 2,0 |
10763 | . ld 2,xxx+8(2) bnectr+ | |
10764 | . bctr b <glink_entry> | |
10765 | ||
10766 | The solution involving the compare turns out to be faster, so | |
10767 | that's what we use unless the branch won't reach. */ | |
10768 | ||
10769 | #define ALWAYS_USE_FAKE_DEP 0 | |
10770 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10771 | |
794e51c0 AM |
10772 | static inline unsigned int |
10773 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10774 | struct ppc_stub_hash_entry *stub_entry, | |
10775 | bfd_vma off) | |
10776 | { | |
b9e5796b AM |
10777 | unsigned size = 12; |
10778 | ||
10779 | if (ALWAYS_EMIT_R2SAVE | |
10780 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10781 | size += 4; | |
10782 | if (PPC_HA (off) != 0) | |
794e51c0 | 10783 | size += 4; |
b9e5796b AM |
10784 | if (htab->opd_abi) |
10785 | { | |
10786 | size += 4; | |
e7d1c40c | 10787 | if (htab->params->plt_static_chain) |
b9e5796b | 10788 | size += 4; |
bd4d2eaa AM |
10789 | if (htab->params->plt_thread_safe |
10790 | && htab->elf.dynamic_sections_created | |
10791 | && stub_entry->h != NULL | |
10792 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10793 | size += 8; |
e7d1c40c | 10794 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10795 | size += 4; |
10796 | } | |
794e51c0 AM |
10797 | if (stub_entry->h != NULL |
10798 | && (stub_entry->h == htab->tls_get_addr_fd | |
10799 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10800 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10801 | { |
10802 | size += 7 * 4; | |
10803 | if (ALWAYS_EMIT_R2SAVE | |
10804 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
407aa07c | 10805 | size += 6 * 4; |
f378ab09 | 10806 | } |
794e51c0 AM |
10807 | return size; |
10808 | } | |
10809 | ||
2420fff6 AM |
10810 | /* Depending on the sign of plt_stub_align: |
10811 | If positive, return the padding to align to a 2**plt_stub_align | |
10812 | boundary. | |
10813 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10814 | boundaries if we align, then return the padding needed to do so. */ | |
10815 | ||
794e51c0 AM |
10816 | static inline unsigned int |
10817 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10818 | struct ppc_stub_hash_entry *stub_entry, | |
10819 | bfd_vma plt_off) | |
10820 | { | |
2420fff6 | 10821 | int stub_align; |
794e51c0 | 10822 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10823 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10824 | |
2420fff6 AM |
10825 | if (htab->params->plt_stub_align >= 0) |
10826 | { | |
10827 | stub_align = 1 << htab->params->plt_stub_align; | |
10828 | if ((stub_off & (stub_align - 1)) != 0) | |
10829 | return stub_align - (stub_off & (stub_align - 1)); | |
10830 | return 0; | |
10831 | } | |
10832 | ||
10833 | stub_align = 1 << -htab->params->plt_stub_align; | |
794e51c0 | 10834 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10835 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10836 | return stub_align - (stub_off & (stub_align - 1)); |
10837 | return 0; | |
10838 | } | |
10839 | ||
10840 | /* Build a .plt call stub. */ | |
10841 | ||
10842 | static inline bfd_byte * | |
10843 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10844 | struct ppc_stub_hash_entry *stub_entry, | |
10845 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10846 | { | |
e7d1c40c | 10847 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10848 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10849 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10850 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10851 | && htab->elf.dynamic_sections_created | |
10852 | && stub_entry->h != NULL | |
10853 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10854 | bfd_boolean use_fake_dep = plt_thread_safe; |
10855 | bfd_vma cmp_branch_off = 0; | |
10856 | ||
10857 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10858 | && plt_load_toc |
794e51c0 | 10859 | && plt_thread_safe |
bd4d2eaa AM |
10860 | && !((stub_entry->h == htab->tls_get_addr_fd |
10861 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10862 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10863 | { |
10864 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10865 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10866 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10867 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10868 | bfd_vma to, from; |
10869 | ||
68d62958 AM |
10870 | if (pltindex > 32768) |
10871 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10872 | to = (glinkoff |
10873 | + htab->glink->output_offset | |
10874 | + htab->glink->output_section->vma); | |
6f20ed8a | 10875 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10876 | + 4 * (ALWAYS_EMIT_R2SAVE |
10877 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10878 | + 4 * (PPC_HA (offset) != 0) | |
10879 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10880 | != PPC_HA (offset)) | |
10881 | + 4 * (plt_static_chain != 0) | |
10882 | + 20 | |
6f20ed8a AM |
10883 | + stub_entry->group->stub_sec->output_offset |
10884 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10885 | cmp_branch_off = to - from; |
10886 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10887 | } | |
10888 | ||
ac2df442 AM |
10889 | if (PPC_HA (offset) != 0) |
10890 | { | |
176a0d42 AM |
10891 | if (r != NULL) |
10892 | { | |
794e51c0 AM |
10893 | if (ALWAYS_EMIT_R2SAVE |
10894 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10895 | r[0].r_offset += 4; | |
176a0d42 | 10896 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10897 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10898 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10899 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10900 | if (plt_load_toc) |
176a0d42 | 10901 | { |
b9e5796b | 10902 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10903 | { |
b9e5796b AM |
10904 | r[2].r_offset = r[1].r_offset + 4; |
10905 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10906 | r[2].r_addend = r[0].r_addend; | |
10907 | } | |
10908 | else | |
10909 | { | |
10910 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10911 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10912 | r[2].r_addend = r[0].r_addend + 8; | |
10913 | if (plt_static_chain) | |
10914 | { | |
10915 | r[3].r_offset = r[2].r_offset + 4; | |
10916 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10917 | r[3].r_addend = r[0].r_addend + 16; | |
10918 | } | |
c7131b65 | 10919 | } |
176a0d42 AM |
10920 | } |
10921 | } | |
794e51c0 AM |
10922 | if (ALWAYS_EMIT_R2SAVE |
10923 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10924 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10925 | if (plt_load_toc) |
10926 | { | |
10927 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10928 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10929 | } | |
10930 | else | |
10931 | { | |
10932 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10933 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10934 | } | |
b9e5796b AM |
10935 | if (plt_load_toc |
10936 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10937 | { |
71a39c98 | 10938 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10939 | offset = 0; |
10940 | } | |
71a39c98 | 10941 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10942 | if (plt_load_toc) |
794e51c0 | 10943 | { |
b9e5796b AM |
10944 | if (use_fake_dep) |
10945 | { | |
10946 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10947 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10948 | } | |
10949 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10950 | if (plt_static_chain) | |
10951 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10952 | } |
ac2df442 AM |
10953 | } |
10954 | else | |
10955 | { | |
176a0d42 AM |
10956 | if (r != NULL) |
10957 | { | |
794e51c0 AM |
10958 | if (ALWAYS_EMIT_R2SAVE |
10959 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10960 | r[0].r_offset += 4; | |
176a0d42 | 10961 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10962 | if (plt_load_toc) |
176a0d42 | 10963 | { |
b9e5796b | 10964 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10965 | { |
b9e5796b AM |
10966 | r[1].r_offset = r[0].r_offset + 4; |
10967 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10968 | r[1].r_addend = r[0].r_addend; | |
10969 | } | |
10970 | else | |
10971 | { | |
10972 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10973 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10974 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10975 | if (plt_static_chain) | |
10976 | { | |
10977 | r[2].r_offset = r[1].r_offset + 4; | |
10978 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10979 | r[2].r_addend = r[0].r_addend + 8; | |
10980 | } | |
c7131b65 | 10981 | } |
176a0d42 AM |
10982 | } |
10983 | } | |
794e51c0 AM |
10984 | if (ALWAYS_EMIT_R2SAVE |
10985 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10986 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10987 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10988 | if (plt_load_toc |
10989 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10990 | { |
10991 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10992 | offset = 0; | |
10993 | } | |
71a39c98 | 10994 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10995 | if (plt_load_toc) |
794e51c0 | 10996 | { |
b9e5796b AM |
10997 | if (use_fake_dep) |
10998 | { | |
10999 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11000 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11001 | } | |
11002 | if (plt_static_chain) | |
11003 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11004 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11005 | } |
ac2df442 | 11006 | } |
b9e5796b | 11007 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11008 | { |
11009 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11010 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11011 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11012 | } |
11013 | else | |
407aa07c | 11014 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11015 | return p; |
11016 | } | |
11017 | ||
a7f2871e AM |
11018 | /* Build a special .plt call stub for __tls_get_addr. */ |
11019 | ||
11020 | #define LD_R11_0R3 0xe9630000 | |
11021 | #define LD_R12_0R3 0xe9830000 | |
11022 | #define MR_R0_R3 0x7c601b78 | |
11023 | #define CMPDI_R11_0 0x2c2b0000 | |
11024 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
11025 | #define BEQLR 0x4d820020 | |
11026 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
11027 | #define STD_R11_0R1 0xf9610000 |
11028 | #define BCTRL 0x4e800421 | |
11029 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
11030 | #define MTLR_R11 0x7d6803a6 |
11031 | ||
11032 | static inline bfd_byte * | |
794e51c0 AM |
11033 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11034 | struct ppc_stub_hash_entry *stub_entry, | |
11035 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11036 | { |
e7d1c40c | 11037 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11038 | |
a7f2871e AM |
11039 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
11040 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
11041 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
11042 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
11043 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
11044 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11045 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
11046 | if (r != NULL) |
11047 | r[0].r_offset += 7 * 4; | |
11048 | if (!ALWAYS_EMIT_R2SAVE | |
11049 | && stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
11050 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
11051 | ||
a7f2871e | 11052 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 11053 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11054 | |
11055 | if (r != NULL) | |
f378ab09 | 11056 | r[0].r_offset += 2 * 4; |
794e51c0 | 11057 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 11058 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 11059 | |
a078d95a | 11060 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 11061 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11062 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
11063 | bfd_put_32 (obfd, BLR, p), p += 4; | |
11064 | ||
11065 | return p; | |
11066 | } | |
11067 | ||
176a0d42 AM |
11068 | static Elf_Internal_Rela * |
11069 | get_relocs (asection *sec, int count) | |
11070 | { | |
11071 | Elf_Internal_Rela *relocs; | |
11072 | struct bfd_elf_section_data *elfsec_data; | |
11073 | ||
11074 | elfsec_data = elf_section_data (sec); | |
11075 | relocs = elfsec_data->relocs; | |
11076 | if (relocs == NULL) | |
11077 | { | |
11078 | bfd_size_type relsize; | |
11079 | relsize = sec->reloc_count * sizeof (*relocs); | |
11080 | relocs = bfd_alloc (sec->owner, relsize); | |
11081 | if (relocs == NULL) | |
11082 | return NULL; | |
11083 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11084 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11085 | sizeof (Elf_Internal_Shdr)); | |
11086 | if (elfsec_data->rela.hdr == NULL) | |
11087 | return NULL; | |
11088 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11089 | * sizeof (Elf64_External_Rela)); | |
11090 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11091 | sec->reloc_count = 0; |
11092 | } | |
11093 | relocs += sec->reloc_count; | |
11094 | sec->reloc_count += count; | |
11095 | return relocs; | |
11096 | } | |
11097 | ||
aa374f67 | 11098 | static bfd_vma |
25f53a85 | 11099 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11100 | struct ppc_stub_hash_entry *stub_entry) |
11101 | { | |
25f53a85 | 11102 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11103 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11104 | |
11105 | if (r2off == 0) | |
11106 | { | |
11107 | /* Support linking -R objects. Get the toc pointer from the | |
11108 | opd entry. */ | |
11109 | char buf[8]; | |
b9e5796b AM |
11110 | if (!htab->opd_abi) |
11111 | return r2off; | |
aa374f67 AM |
11112 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11113 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11114 | ||
11115 | if (strcmp (opd->name, ".opd") != 0 | |
11116 | || opd->reloc_count != 0) | |
11117 | { | |
c1c8c1ef | 11118 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%pT'\n"), |
25f53a85 | 11119 | stub_entry->h->elf.root.root.string); |
aa374f67 | 11120 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11121 | return (bfd_vma) -1; |
aa374f67 AM |
11122 | } |
11123 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11124 | return (bfd_vma) -1; |
aa374f67 | 11125 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11126 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11127 | } |
6f20ed8a | 11128 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11129 | return r2off; |
11130 | } | |
11131 | ||
b34976b6 | 11132 | static bfd_boolean |
4ce794b7 | 11133 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11134 | { |
721956f4 AM |
11135 | struct ppc_stub_hash_entry *stub_entry; |
11136 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11137 | struct bfd_link_info *info; |
11138 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
11139 | bfd_byte *loc; |
11140 | bfd_byte *p; | |
ee75fd95 | 11141 | bfd_vma dest, off; |
176a0d42 | 11142 | Elf_Internal_Rela *r; |
e054468f | 11143 | asection *plt; |
5d1634d7 | 11144 | |
721956f4 AM |
11145 | /* Massage our args to the form they really have. */ |
11146 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11147 | info = in_arg; |
5d1634d7 | 11148 | |
5d1634d7 | 11149 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11150 | if (htab == NULL) |
11151 | return FALSE; | |
5d1634d7 | 11152 | |
721956f4 | 11153 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
11154 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
11155 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 11156 | |
4ce794b7 | 11157 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11158 | switch (stub_entry->stub_type) |
5d1634d7 | 11159 | { |
721956f4 | 11160 | case ppc_stub_long_branch: |
ad8e1ba5 | 11161 | case ppc_stub_long_branch_r2off: |
721956f4 | 11162 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
11163 | dest = (stub_entry->target_value |
11164 | + stub_entry->target_section->output_offset | |
11165 | + stub_entry->target_section->output_section->vma); | |
11166 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
11167 | off = dest; | |
5d1634d7 | 11168 | |
721956f4 AM |
11169 | /* And this is where we are coming from. */ |
11170 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
11171 | + stub_entry->group->stub_sec->output_offset |
11172 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 11173 | |
9e390558 | 11174 | p = loc; |
ac2df442 | 11175 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11176 | { |
25f53a85 | 11177 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11178 | |
a7c49797 | 11179 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11180 | { |
11181 | htab->stub_error = TRUE; | |
11182 | return FALSE; | |
11183 | } | |
9e390558 AM |
11184 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11185 | p += 4; | |
ac2df442 AM |
11186 | if (PPC_HA (r2off) != 0) |
11187 | { | |
e7d1c40c | 11188 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11189 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11190 | p += 4; | |
a7c49797 AM |
11191 | } |
11192 | if (PPC_LO (r2off) != 0) | |
11193 | { | |
11194 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11195 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11196 | p += 4; | |
ac2df442 | 11197 | } |
9e390558 | 11198 | off -= p - loc; |
ad8e1ba5 | 11199 | } |
9e390558 AM |
11200 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11201 | p += 4; | |
ad8e1ba5 | 11202 | |
5c3dead3 AM |
11203 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11204 | { | |
cf97bcb0 AM |
11205 | _bfd_error_handler |
11206 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11207 | stub_entry->root.string); |
5c3dead3 AM |
11208 | htab->stub_error = TRUE; |
11209 | return FALSE; | |
11210 | } | |
ee75fd95 AM |
11211 | |
11212 | if (info->emitrelocations) | |
11213 | { | |
6f20ed8a | 11214 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11215 | if (r == NULL) |
11216 | return FALSE; | |
9e390558 | 11217 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
11218 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
11219 | r->r_addend = dest; | |
11220 | if (stub_entry->h != NULL) | |
11221 | { | |
11222 | struct elf_link_hash_entry **hashes; | |
11223 | unsigned long symndx; | |
11224 | struct ppc_link_hash_entry *h; | |
11225 | ||
e7d1c40c | 11226 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
11227 | if (hashes == NULL) |
11228 | { | |
11229 | bfd_size_type hsize; | |
11230 | ||
11231 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 11232 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
11233 | if (hashes == NULL) |
11234 | return FALSE; | |
e7d1c40c | 11235 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
11236 | htab->stub_globals = 1; |
11237 | } | |
11238 | symndx = htab->stub_globals++; | |
11239 | h = stub_entry->h; | |
11240 | hashes[symndx] = &h->elf; | |
11241 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
11242 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 11243 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
11244 | if (h->elf.root.u.def.section != stub_entry->target_section) |
11245 | /* H is an opd symbol. The addend must be zero. */ | |
11246 | r->r_addend = 0; | |
11247 | else | |
11248 | { | |
11249 | off = (h->elf.root.u.def.value | |
11250 | + h->elf.root.u.def.section->output_offset | |
11251 | + h->elf.root.u.def.section->output_section->vma); | |
11252 | r->r_addend -= off; | |
11253 | } | |
11254 | } | |
11255 | } | |
721956f4 | 11256 | break; |
e86ce104 | 11257 | |
721956f4 | 11258 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11259 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11260 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11261 | stub_entry->root.string + 9, | |
b34976b6 | 11262 | FALSE, FALSE); |
721956f4 AM |
11263 | if (br_entry == NULL) |
11264 | { | |
cf97bcb0 AM |
11265 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11266 | stub_entry->root.string); | |
b34976b6 AM |
11267 | htab->stub_error = TRUE; |
11268 | return FALSE; | |
721956f4 AM |
11269 | } |
11270 | ||
176a0d42 AM |
11271 | dest = (stub_entry->target_value |
11272 | + stub_entry->target_section->output_offset | |
11273 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
11274 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
11275 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 11276 | |
176a0d42 | 11277 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 11278 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11279 | |
f94498ff | 11280 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11281 | { |
f94498ff | 11282 | br_entry->iter = 0; |
84f5d08e | 11283 | |
f94498ff | 11284 | if (htab->relbrlt != NULL) |
84f5d08e | 11285 | { |
f94498ff AM |
11286 | /* Create a reloc for the branch lookup table entry. */ |
11287 | Elf_Internal_Rela rela; | |
11288 | bfd_byte *rl; | |
11289 | ||
11290 | rela.r_offset = (br_entry->offset | |
11291 | + htab->brlt->output_offset | |
11292 | + htab->brlt->output_section->vma); | |
11293 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11294 | rela.r_addend = dest; |
f94498ff AM |
11295 | |
11296 | rl = htab->relbrlt->contents; | |
11297 | rl += (htab->relbrlt->reloc_count++ | |
11298 | * sizeof (Elf64_External_Rela)); | |
11299 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11300 | } | |
11301 | else if (info->emitrelocations) | |
11302 | { | |
176a0d42 AM |
11303 | r = get_relocs (htab->brlt, 1); |
11304 | if (r == NULL) | |
11305 | return FALSE; | |
11306 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11307 | normal reloc processing. Symbols and offsets are not | |
11308 | translated from input file to output file form, so | |
11309 | set up the offset per the output file. */ | |
f94498ff AM |
11310 | r->r_offset = (br_entry->offset |
11311 | + htab->brlt->output_offset | |
11312 | + htab->brlt->output_section->vma); | |
11313 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11314 | r->r_addend = dest; |
84f5d08e | 11315 | } |
84f5d08e | 11316 | } |
721956f4 | 11317 | |
176a0d42 AM |
11318 | dest = (br_entry->offset |
11319 | + htab->brlt->output_offset | |
11320 | + htab->brlt->output_section->vma); | |
11321 | ||
11322 | off = (dest | |
06bcf541 | 11323 | - elf_gp (info->output_bfd) |
6f20ed8a | 11324 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11325 | |
ad8e1ba5 | 11326 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11327 | { |
25f53a85 | 11328 | info->callbacks->einfo |
c1c8c1ef | 11329 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11330 | stub_entry->root.string); |
5d1634d7 | 11331 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11332 | htab->stub_error = TRUE; |
11333 | return FALSE; | |
5d1634d7 | 11334 | } |
41bd81ab | 11335 | |
176a0d42 AM |
11336 | if (info->emitrelocations) |
11337 | { | |
6f20ed8a | 11338 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11339 | if (r == NULL) |
11340 | return FALSE; | |
6f20ed8a | 11341 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11342 | if (bfd_big_endian (info->output_bfd)) |
11343 | r[0].r_offset += 2; | |
00f412ee | 11344 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11345 | r[0].r_offset += 4; |
11346 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11347 | r[0].r_addend = dest; | |
11348 | if (PPC_HA (off) != 0) | |
11349 | { | |
11350 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11351 | r[1].r_offset = r[0].r_offset + 4; | |
11352 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11353 | r[1].r_addend = r[0].r_addend; | |
11354 | } | |
11355 | } | |
11356 | ||
9e390558 | 11357 | p = loc; |
00f412ee | 11358 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11359 | { |
176a0d42 | 11360 | if (PPC_HA (off) != 0) |
ac2df442 | 11361 | { |
e7d1c40c | 11362 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11363 | ADDIS_R12_R2 | PPC_HA (off), p); |
11364 | p += 4; | |
e7d1c40c | 11365 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11366 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11367 | } |
11368 | else | |
9e390558 AM |
11369 | bfd_put_32 (htab->params->stub_bfd, |
11370 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11371 | } |
11372 | else | |
11373 | { | |
25f53a85 | 11374 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11375 | |
a7c49797 | 11376 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11377 | { |
11378 | htab->stub_error = TRUE; | |
11379 | return FALSE; | |
11380 | } | |
ad8e1ba5 | 11381 | |
9e390558 AM |
11382 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11383 | p += 4; | |
176a0d42 | 11384 | if (PPC_HA (off) != 0) |
ac2df442 | 11385 | { |
e7d1c40c | 11386 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11387 | ADDIS_R12_R2 | PPC_HA (off), p); |
11388 | p += 4; | |
e7d1c40c | 11389 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11390 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11391 | } |
11392 | else | |
9e390558 | 11393 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11394 | |
11395 | if (PPC_HA (r2off) != 0) | |
11396 | { | |
9e390558 | 11397 | p += 4; |
e7d1c40c | 11398 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11399 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11400 | } |
11401 | if (PPC_LO (r2off) != 0) | |
11402 | { | |
9e390558 | 11403 | p += 4; |
e7d1c40c | 11404 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11405 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11406 | } |
ad8e1ba5 | 11407 | } |
9e390558 AM |
11408 | p += 4; |
11409 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11410 | p += 4; | |
407aa07c AM |
11411 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11412 | p += 4; | |
721956f4 | 11413 | break; |
5d1634d7 | 11414 | |
721956f4 | 11415 | case ppc_stub_plt_call: |
794e51c0 | 11416 | case ppc_stub_plt_call_r2save: |
e054468f | 11417 | if (stub_entry->h != NULL |
b31867b6 AM |
11418 | && stub_entry->h->is_func_descriptor |
11419 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11420 | { |
b31867b6 AM |
11421 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11422 | ||
11423 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11424 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11425 | if (fh->elf.root.type == bfd_link_hash_undefined |
11426 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11427 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11428 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11429 | } |
11430 | ||
721956f4 | 11431 | /* Now build the stub. */ |
e054468f | 11432 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 11433 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
11434 | abort (); |
11435 | ||
33e44f2e | 11436 | plt = htab->elf.splt; |
25f23106 AM |
11437 | if (!htab->elf.dynamic_sections_created |
11438 | || stub_entry->h == NULL | |
11439 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11440 | { |
11441 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11442 | plt = htab->elf.iplt; | |
11443 | else | |
11444 | plt = htab->pltlocal; | |
11445 | } | |
e054468f AM |
11446 | |
11447 | dest += plt->output_offset + plt->output_section->vma; | |
11448 | ||
176a0d42 | 11449 | off = (dest |
06bcf541 | 11450 | - elf_gp (info->output_bfd) |
6f20ed8a | 11451 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11452 | |
ad8e1ba5 | 11453 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11454 | { |
25f53a85 | 11455 | info->callbacks->einfo |
695344c0 | 11456 | /* xgettext:c-format */ |
c1c8c1ef | 11457 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11458 | stub_entry->h != NULL |
11459 | ? stub_entry->h->elf.root.root.string | |
11460 | : "<local sym>"); | |
721956f4 | 11461 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11462 | htab->stub_error = TRUE; |
11463 | return FALSE; | |
721956f4 AM |
11464 | } |
11465 | ||
e7d1c40c | 11466 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
11467 | { |
11468 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11469 | ||
6f20ed8a AM |
11470 | stub_entry->group->stub_sec->size += pad; |
11471 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
11472 | loc += pad; |
11473 | } | |
11474 | ||
176a0d42 AM |
11475 | r = NULL; |
11476 | if (info->emitrelocations) | |
11477 | { | |
6f20ed8a | 11478 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11479 | ((PPC_HA (off) != 0) |
11480 | + (htab->opd_abi | |
e7d1c40c | 11481 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11482 | && PPC_HA (off + 16) == PPC_HA (off)) |
11483 | : 1))); | |
176a0d42 AM |
11484 | if (r == NULL) |
11485 | return FALSE; | |
6f20ed8a | 11486 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11487 | if (bfd_big_endian (info->output_bfd)) |
11488 | r[0].r_offset += 2; | |
176a0d42 AM |
11489 | r[0].r_addend = dest; |
11490 | } | |
a7f2871e AM |
11491 | if (stub_entry->h != NULL |
11492 | && (stub_entry->h == htab->tls_get_addr_fd | |
11493 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11494 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11495 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11496 | else |
794e51c0 | 11497 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11498 | break; |
11499 | ||
a4b6fadd AM |
11500 | case ppc_stub_save_res: |
11501 | return TRUE; | |
11502 | ||
721956f4 AM |
11503 | default: |
11504 | BFD_FAIL (); | |
b34976b6 | 11505 | return FALSE; |
721956f4 AM |
11506 | } |
11507 | ||
9e390558 | 11508 | stub_entry->group->stub_sec->size += p - loc; |
97b639ba | 11509 | |
e7d1c40c | 11510 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11511 | { |
11512 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11513 | size_t len1, len2; |
11514 | char *name; | |
11515 | const char *const stub_str[] = { "long_branch", | |
11516 | "long_branch_r2off", | |
11517 | "plt_branch", | |
11518 | "plt_branch_r2off", | |
794e51c0 | 11519 | "plt_call", |
ee75fd95 AM |
11520 | "plt_call" }; |
11521 | ||
11522 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11523 | len2 = strlen (stub_entry->root.string); | |
11524 | name = bfd_malloc (len1 + len2 + 2); | |
11525 | if (name == NULL) | |
11526 | return FALSE; | |
11527 | memcpy (name, stub_entry->root.string, 9); | |
11528 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11529 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11530 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11531 | if (h == NULL) |
11532 | return FALSE; | |
11533 | if (h->root.type == bfd_link_hash_new) | |
11534 | { | |
11535 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11536 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11537 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11538 | h->ref_regular = 1; |
11539 | h->def_regular = 1; | |
11540 | h->ref_regular_nonweak = 1; | |
11541 | h->forced_local = 1; | |
11542 | h->non_elf = 0; | |
2ec55de3 | 11543 | h->root.linker_def = 1; |
97b639ba AM |
11544 | } |
11545 | } | |
11546 | ||
b34976b6 | 11547 | return TRUE; |
721956f4 AM |
11548 | } |
11549 | ||
11550 | /* As above, but don't actually build the stub. Just bump offset so | |
11551 | we know stub section sizes, and select plt_branch stubs where | |
11552 | long_branch stubs won't do. */ | |
11553 | ||
b34976b6 | 11554 | static bfd_boolean |
4ce794b7 | 11555 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11556 | { |
11557 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11558 | struct bfd_link_info *info; |
721956f4 AM |
11559 | struct ppc_link_hash_table *htab; |
11560 | bfd_vma off; | |
11561 | int size; | |
11562 | ||
11563 | /* Massage our args to the form they really have. */ | |
11564 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11565 | info = in_arg; |
11566 | ||
11567 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11568 | if (htab == NULL) |
11569 | return FALSE; | |
721956f4 | 11570 | |
a4b6fadd AM |
11571 | if (stub_entry->h != NULL |
11572 | && stub_entry->h->save_res | |
11573 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11574 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11575 | { | |
11576 | /* Don't make stubs to out-of-line register save/restore | |
11577 | functions. Instead, emit copies of the functions. */ | |
11578 | stub_entry->group->needs_save_res = 1; | |
11579 | stub_entry->stub_type = ppc_stub_save_res; | |
11580 | return TRUE; | |
11581 | } | |
11582 | ||
794e51c0 AM |
11583 | if (stub_entry->stub_type == ppc_stub_plt_call |
11584 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11585 | { |
e054468f AM |
11586 | asection *plt; |
11587 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11588 | if (off >= (bfd_vma) -2) |
411e1bfb | 11589 | abort (); |
33e44f2e | 11590 | plt = htab->elf.splt; |
25f23106 AM |
11591 | if (!htab->elf.dynamic_sections_created |
11592 | || stub_entry->h == NULL | |
11593 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11594 | { |
11595 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11596 | plt = htab->elf.iplt; | |
11597 | else | |
11598 | plt = htab->pltlocal; | |
11599 | } | |
e054468f AM |
11600 | off += (plt->output_offset |
11601 | + plt->output_section->vma | |
06bcf541 | 11602 | - elf_gp (info->output_bfd) |
6f20ed8a | 11603 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11604 | |
794e51c0 | 11605 | size = plt_stub_size (htab, stub_entry, off); |
d4aaa2a0 AM |
11606 | if (stub_entry->h != NULL |
11607 | && (stub_entry->h == htab->tls_get_addr_fd | |
11608 | || stub_entry->h == htab->tls_get_addr) | |
11609 | && htab->params->tls_get_addr_opt | |
11610 | && (ALWAYS_EMIT_R2SAVE | |
11611 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
11612 | stub_entry->group->tls_get_addr_opt_bctrl | |
11613 | = stub_entry->group->stub_sec->size + size - 5 * 4; | |
11614 | ||
e7d1c40c | 11615 | if (htab->params->plt_stub_align) |
794e51c0 | 11616 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11617 | if (info->emitrelocations) |
11618 | { | |
6f20ed8a | 11619 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11620 | += ((PPC_HA (off) != 0) |
11621 | + (htab->opd_abi | |
e7d1c40c | 11622 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11623 | && PPC_HA (off + 16) == PPC_HA (off)) |
11624 | : 1)); | |
6f20ed8a | 11625 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11626 | } |
721956f4 AM |
11627 | } |
11628 | else | |
11629 | { | |
ad8e1ba5 AM |
11630 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11631 | variants. */ | |
ac2df442 | 11632 | bfd_vma r2off = 0; |
6911b7dc | 11633 | bfd_vma local_off = 0; |
ac2df442 | 11634 | |
721956f4 AM |
11635 | off = (stub_entry->target_value |
11636 | + stub_entry->target_section->output_offset | |
11637 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11638 | off -= (stub_entry->group->stub_sec->size |
11639 | + stub_entry->group->stub_sec->output_offset | |
11640 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11641 | |
ad8e1ba5 AM |
11642 | /* Reset the stub type from the plt variant in case we now |
11643 | can reach with a shorter stub. */ | |
11644 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11645 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11646 | ||
11647 | size = 4; | |
11648 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11649 | { | |
25f53a85 | 11650 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11651 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11652 | { |
11653 | htab->stub_error = TRUE; | |
11654 | return FALSE; | |
11655 | } | |
a7c49797 | 11656 | size = 8; |
ac2df442 | 11657 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11658 | size += 4; |
11659 | if (PPC_LO (r2off) != 0) | |
11660 | size += 4; | |
ac2df442 | 11661 | off -= size - 4; |
ad8e1ba5 AM |
11662 | } |
11663 | ||
6911b7dc AM |
11664 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11665 | ||
6a3858a6 | 11666 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
b9e5796b AM |
11667 | Do the same for -R objects without function descriptors. */ |
11668 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11669 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11670 | && r2off == 0 |
11671 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11672 | { |
11673 | struct ppc_branch_hash_entry *br_entry; | |
11674 | ||
11675 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11676 | stub_entry->root.string + 9, | |
b34976b6 | 11677 | TRUE, FALSE); |
721956f4 AM |
11678 | if (br_entry == NULL) |
11679 | { | |
cf97bcb0 AM |
11680 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11681 | stub_entry->root.string); | |
b34976b6 AM |
11682 | htab->stub_error = TRUE; |
11683 | return FALSE; | |
721956f4 AM |
11684 | } |
11685 | ||
11686 | if (br_entry->iter != htab->stub_iteration) | |
11687 | { | |
11688 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11689 | br_entry->offset = htab->brlt->size; |
11690 | htab->brlt->size += 8; | |
63bc6f6c | 11691 | |
ee75fd95 | 11692 | if (htab->relbrlt != NULL) |
eea6121a | 11693 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11694 | else if (info->emitrelocations) |
11695 | { | |
11696 | htab->brlt->reloc_count += 1; | |
11697 | htab->brlt->flags |= SEC_RELOC; | |
11698 | } | |
721956f4 | 11699 | } |
ad8e1ba5 AM |
11700 | |
11701 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11702 | off = (br_entry->offset |
11703 | + htab->brlt->output_offset | |
11704 | + htab->brlt->output_section->vma | |
06bcf541 | 11705 | - elf_gp (info->output_bfd) |
6f20ed8a | 11706 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11707 | |
176a0d42 AM |
11708 | if (info->emitrelocations) |
11709 | { | |
6f20ed8a AM |
11710 | stub_entry->group->stub_sec->reloc_count |
11711 | += 1 + (PPC_HA (off) != 0); | |
11712 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11713 | } |
11714 | ||
00f412ee | 11715 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11716 | { |
11717 | size = 12; | |
176a0d42 | 11718 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11719 | size = 16; |
11720 | } | |
11721 | else | |
11722 | { | |
00f412ee | 11723 | size = 16; |
176a0d42 | 11724 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11725 | size += 4; |
11726 | ||
11727 | if (PPC_HA (r2off) != 0) | |
11728 | size += 4; | |
00f412ee AM |
11729 | if (PPC_LO (r2off) != 0) |
11730 | size += 4; | |
ac2df442 | 11731 | } |
721956f4 | 11732 | } |
84f5d08e AM |
11733 | else if (info->emitrelocations) |
11734 | { | |
6f20ed8a AM |
11735 | stub_entry->group->stub_sec->reloc_count += 1; |
11736 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11737 | } |
721956f4 AM |
11738 | } |
11739 | ||
6f20ed8a | 11740 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11741 | return TRUE; |
721956f4 AM |
11742 | } |
11743 | ||
11744 | /* Set up various things so that we can make a list of input sections | |
11745 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11746 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11747 | |
11748 | int | |
e7d1c40c | 11749 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11750 | { |
6f20ed8a | 11751 | unsigned int id; |
721956f4 AM |
11752 | bfd_size_type amt; |
11753 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11754 | ||
4dfe6ac6 NC |
11755 | if (htab == NULL) |
11756 | return -1; | |
4c52953f | 11757 | |
7cf7fcc8 | 11758 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
11759 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
11760 | htab->sec_info = bfd_zmalloc (amt); | |
11761 | if (htab->sec_info == NULL) | |
721956f4 AM |
11762 | return -1; |
11763 | ||
3d6f9012 AM |
11764 | /* Set toc_off for com, und, abs and ind sections. */ |
11765 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11766 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11767 | |
721956f4 AM |
11768 | return 1; |
11769 | } | |
11770 | ||
927be08e AM |
11771 | /* Set up for first pass at multitoc partitioning. */ |
11772 | ||
11773 | void | |
11774 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11775 | { | |
11776 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11777 | ||
1c865ab2 | 11778 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11779 | htab->toc_bfd = NULL; |
11780 | htab->toc_first_sec = NULL; | |
11781 | } | |
11782 | ||
e717da7e AM |
11783 | /* The linker repeatedly calls this function for each TOC input section |
11784 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11785 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11786 | |
927be08e | 11787 | bfd_boolean |
4ce794b7 | 11788 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11789 | { |
11790 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11791 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11792 | |
4dfe6ac6 NC |
11793 | if (htab == NULL) |
11794 | return FALSE; | |
11795 | ||
927be08e | 11796 | if (!htab->second_toc_pass) |
4c52953f | 11797 | { |
927be08e | 11798 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11799 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11800 | ||
11801 | if (new_bfd) | |
bf102f86 AM |
11802 | { |
11803 | htab->toc_bfd = isec->owner; | |
11804 | htab->toc_first_sec = isec; | |
11805 | } | |
927be08e | 11806 | |
bf102f86 AM |
11807 | addr = isec->output_offset + isec->output_section->vma; |
11808 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11809 | limit = 0x80008000; |
11810 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11811 | limit = 0x10000; | |
11812 | if (off + isec->size > limit) | |
bf102f86 AM |
11813 | { |
11814 | addr = (htab->toc_first_sec->output_offset | |
11815 | + htab->toc_first_sec->output_section->vma); | |
11816 | htab->toc_curr = addr; | |
a27e685f | 11817 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11818 | } |
99877b66 | 11819 | |
927be08e AM |
11820 | /* toc_curr is the base address of this toc group. Set elf_gp |
11821 | for the input section to be the offset relative to the | |
11822 | output toc base plus 0x8000. Making the input elf_gp an | |
11823 | offset allows us to move the toc as a whole without | |
11824 | recalculating input elf_gp. */ | |
06bcf541 | 11825 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11826 | off += TOC_BASE_OFF; |
11827 | ||
11828 | /* Die if someone uses a linker script that doesn't keep input | |
11829 | file .toc and .got together. */ | |
a4fd3de5 AM |
11830 | if (new_bfd |
11831 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11832 | && elf_gp (isec->owner) != off) |
11833 | return FALSE; | |
11834 | ||
11835 | elf_gp (isec->owner) = off; | |
11836 | return TRUE; | |
4c52953f | 11837 | } |
927be08e AM |
11838 | |
11839 | /* During the second pass toc_first_sec points to the start of | |
11840 | a toc group, and toc_curr is used to track the old elf_gp. | |
11841 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11842 | if (htab->toc_bfd == isec->owner) | |
11843 | return TRUE; | |
11844 | htab->toc_bfd = isec->owner; | |
11845 | ||
11846 | if (htab->toc_first_sec == NULL | |
11847 | || htab->toc_curr != elf_gp (isec->owner)) | |
11848 | { | |
11849 | htab->toc_curr = elf_gp (isec->owner); | |
11850 | htab->toc_first_sec = isec; | |
11851 | } | |
11852 | addr = (htab->toc_first_sec->output_offset | |
11853 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11854 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11855 | elf_gp (isec->owner) = off; |
11856 | ||
11857 | return TRUE; | |
ad8e1ba5 AM |
11858 | } |
11859 | ||
927be08e AM |
11860 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11861 | symbol H. */ | |
11862 | ||
11863 | static bfd_boolean | |
11864 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11865 | { | |
11866 | if (h->root.type == bfd_link_hash_indirect) | |
11867 | return TRUE; | |
11868 | ||
927be08e AM |
11869 | merge_got_entries (&h->got.glist); |
11870 | ||
11871 | return TRUE; | |
11872 | } | |
11873 | ||
11874 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11875 | symbol H. */ | |
11876 | ||
11877 | static bfd_boolean | |
11878 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11879 | { | |
11880 | struct got_entry *gent; | |
11881 | ||
11882 | if (h->root.type == bfd_link_hash_indirect) | |
11883 | return TRUE; | |
11884 | ||
927be08e AM |
11885 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11886 | if (!gent->is_indirect) | |
11887 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11888 | return TRUE; | |
11889 | } | |
11890 | ||
11891 | /* Called on the first multitoc pass after the last call to | |
11892 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11893 | entries. */ | |
11894 | ||
11895 | bfd_boolean | |
11896 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11897 | { |
11898 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11899 | struct bfd *ibfd, *ibfd2; |
11900 | bfd_boolean done_something; | |
11901 | ||
11902 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11903 | |
7865406b AM |
11904 | if (!htab->do_multi_toc) |
11905 | return FALSE; | |
11906 | ||
d0fae19d | 11907 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11908 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11909 | ||
11910 | /* And tlsld_got. */ | |
c72f2fb2 | 11911 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11912 | { |
11913 | struct got_entry *ent, *ent2; | |
11914 | ||
11915 | if (!is_ppc64_elf (ibfd)) | |
11916 | continue; | |
11917 | ||
11918 | ent = ppc64_tlsld_got (ibfd); | |
11919 | if (!ent->is_indirect | |
11920 | && ent->got.offset != (bfd_vma) -1) | |
11921 | { | |
c72f2fb2 | 11922 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11923 | { |
11924 | if (!is_ppc64_elf (ibfd2)) | |
11925 | continue; | |
11926 | ||
11927 | ent2 = ppc64_tlsld_got (ibfd2); | |
11928 | if (!ent2->is_indirect | |
11929 | && ent2->got.offset != (bfd_vma) -1 | |
11930 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11931 | { | |
11932 | ent2->is_indirect = TRUE; | |
11933 | ent2->got.ent = ent; | |
11934 | } | |
11935 | } | |
11936 | } | |
11937 | } | |
11938 | ||
11939 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11940 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11941 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11942 | htab->got_reli_size = 0; |
11943 | ||
c72f2fb2 | 11944 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11945 | { |
11946 | asection *got, *relgot; | |
11947 | ||
11948 | if (!is_ppc64_elf (ibfd)) | |
11949 | continue; | |
11950 | ||
11951 | got = ppc64_elf_tdata (ibfd)->got; | |
11952 | if (got != NULL) | |
11953 | { | |
11954 | got->rawsize = got->size; | |
11955 | got->size = 0; | |
11956 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11957 | relgot->rawsize = relgot->size; | |
11958 | relgot->size = 0; | |
11959 | } | |
11960 | } | |
11961 | ||
11962 | /* Now reallocate the got, local syms first. We don't need to | |
11963 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11964 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11965 | { |
11966 | struct got_entry **lgot_ents; | |
11967 | struct got_entry **end_lgot_ents; | |
11968 | struct plt_entry **local_plt; | |
11969 | struct plt_entry **end_local_plt; | |
f961d9dd | 11970 | unsigned char *lgot_masks; |
927be08e AM |
11971 | bfd_size_type locsymcount; |
11972 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11973 | asection *s; |
927be08e AM |
11974 | |
11975 | if (!is_ppc64_elf (ibfd)) | |
11976 | continue; | |
11977 | ||
11978 | lgot_ents = elf_local_got_ents (ibfd); | |
11979 | if (!lgot_ents) | |
11980 | continue; | |
11981 | ||
11982 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11983 | locsymcount = symtab_hdr->sh_info; | |
11984 | end_lgot_ents = lgot_ents + locsymcount; | |
11985 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11986 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11987 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11988 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11989 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11990 | { | |
11991 | struct got_entry *ent; | |
11992 | ||
11993 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11994 | { |
19e08130 AM |
11995 | unsigned int ent_size = 8; |
11996 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11997 | ||
d0fae19d AM |
11998 | ent->got.offset = s->size; |
11999 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12000 | { |
19e08130 AM |
12001 | ent_size *= 2; |
12002 | rel_size *= 2; | |
12003 | } | |
12004 | s->size += ent_size; | |
37da22e5 | 12005 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12006 | { |
33e44f2e | 12007 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12008 | htab->got_reli_size += rel_size; |
12009 | } | |
6a3858a6 AM |
12010 | else if (bfd_link_pic (info) |
12011 | && !((ent->tls_type & TLS_TPREL) != 0 | |
12012 | && bfd_link_executable (info))) | |
19e08130 AM |
12013 | { |
12014 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12015 | srel->size += rel_size; | |
d0fae19d AM |
12016 | } |
12017 | } | |
927be08e AM |
12018 | } |
12019 | } | |
12020 | ||
12021 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12022 | ||
c72f2fb2 | 12023 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12024 | { |
12025 | struct got_entry *ent; | |
12026 | ||
12027 | if (!is_ppc64_elf (ibfd)) | |
12028 | continue; | |
12029 | ||
12030 | ent = ppc64_tlsld_got (ibfd); | |
12031 | if (!ent->is_indirect | |
12032 | && ent->got.offset != (bfd_vma) -1) | |
12033 | { | |
12034 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12035 | ent->got.offset = s->size; | |
12036 | s->size += 16; | |
0e1862bb | 12037 | if (bfd_link_pic (info)) |
927be08e AM |
12038 | { |
12039 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12040 | srel->size += sizeof (Elf64_External_Rela); | |
12041 | } | |
12042 | } | |
12043 | } | |
12044 | ||
33e44f2e | 12045 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12046 | if (!done_something) |
c72f2fb2 | 12047 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12048 | { |
12049 | asection *got; | |
12050 | ||
12051 | if (!is_ppc64_elf (ibfd)) | |
12052 | continue; | |
12053 | ||
12054 | got = ppc64_elf_tdata (ibfd)->got; | |
12055 | if (got != NULL) | |
12056 | { | |
12057 | done_something = got->rawsize != got->size; | |
12058 | if (done_something) | |
12059 | break; | |
12060 | } | |
12061 | } | |
12062 | ||
12063 | if (done_something) | |
e7d1c40c | 12064 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12065 | |
12066 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12067 | on input sections. */ | |
12068 | htab->toc_bfd = NULL; | |
12069 | htab->toc_first_sec = NULL; | |
12070 | htab->second_toc_pass = TRUE; | |
12071 | return done_something; | |
12072 | } | |
12073 | ||
12074 | /* Called after second pass of multitoc partitioning. */ | |
12075 | ||
12076 | void | |
12077 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12078 | { | |
12079 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12080 | ||
12081 | /* After the second pass, toc_curr tracks the TOC offset used | |
12082 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12083 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12084 | } |
12085 | ||
9b5ecbd0 AM |
12086 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12087 | calls, then there's no need to use toc adjusting stubs when branching | |
12088 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12089 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12090 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12091 | for a stub was detected. If called from the top level, a return of | |
12092 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12093 | |
12094 | static int | |
4ce794b7 | 12095 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12096 | { |
9b5ecbd0 | 12097 | int ret; |
70cc837d AM |
12098 | |
12099 | /* Mark this section as checked. */ | |
12100 | isec->call_check_done = 1; | |
9b5ecbd0 | 12101 | |
772119ce AM |
12102 | /* We know none of our code bearing sections will need toc stubs. */ |
12103 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12104 | return 0; | |
12105 | ||
eea6121a | 12106 | if (isec->size == 0) |
082c50f8 AM |
12107 | return 0; |
12108 | ||
4c52953f AM |
12109 | if (isec->output_section == NULL) |
12110 | return 0; | |
12111 | ||
4c52953f | 12112 | ret = 0; |
70cc837d | 12113 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12114 | { |
70cc837d AM |
12115 | Elf_Internal_Rela *relstart, *rel; |
12116 | Elf_Internal_Sym *local_syms; | |
12117 | struct ppc_link_hash_table *htab; | |
2917689a | 12118 | |
70cc837d AM |
12119 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12120 | info->keep_memory); | |
12121 | if (relstart == NULL) | |
12122 | return -1; | |
90aecf7a | 12123 | |
70cc837d AM |
12124 | /* Look for branches to outside of this section. */ |
12125 | local_syms = NULL; | |
12126 | htab = ppc_hash_table (info); | |
12127 | if (htab == NULL) | |
12128 | return -1; | |
4c52953f | 12129 | |
70cc837d | 12130 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12131 | { |
70cc837d AM |
12132 | enum elf_ppc64_reloc_type r_type; |
12133 | unsigned long r_symndx; | |
12134 | struct elf_link_hash_entry *h; | |
12135 | struct ppc_link_hash_entry *eh; | |
12136 | Elf_Internal_Sym *sym; | |
12137 | asection *sym_sec; | |
12138 | struct _opd_sec_data *opd; | |
12139 | bfd_vma sym_value; | |
12140 | bfd_vma dest; | |
12141 | ||
12142 | r_type = ELF64_R_TYPE (rel->r_info); | |
12143 | if (r_type != R_PPC64_REL24 | |
12144 | && r_type != R_PPC64_REL14 | |
12145 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d AM |
12146 | && r_type != R_PPC64_REL14_BRNTAKEN |
12147 | && r_type != R_PPC64_PLTCALL) | |
70cc837d | 12148 | continue; |
4c52953f | 12149 | |
70cc837d AM |
12150 | r_symndx = ELF64_R_SYM (rel->r_info); |
12151 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12152 | isec->owner)) | |
4c52953f | 12153 | { |
70cc837d AM |
12154 | ret = -1; |
12155 | break; | |
12156 | } | |
4c52953f | 12157 | |
70cc837d AM |
12158 | /* Calls to dynamic lib functions go through a plt call stub |
12159 | that uses r2. */ | |
12160 | eh = (struct ppc_link_hash_entry *) h; | |
12161 | if (eh != NULL | |
12162 | && (eh->elf.plt.plist != NULL | |
12163 | || (eh->oh != NULL | |
12164 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12165 | { | |
12166 | ret = 1; | |
12167 | break; | |
4c52953f AM |
12168 | } |
12169 | ||
70cc837d AM |
12170 | if (sym_sec == NULL) |
12171 | /* Ignore other undefined symbols. */ | |
4c52953f | 12172 | continue; |
4c52953f | 12173 | |
70cc837d AM |
12174 | /* Assume branches to other sections not included in the |
12175 | link need stubs too, to cover -R and absolute syms. */ | |
12176 | if (sym_sec->output_section == NULL) | |
12177 | { | |
12178 | ret = 1; | |
12179 | break; | |
12180 | } | |
4c52953f | 12181 | |
70cc837d AM |
12182 | if (h == NULL) |
12183 | sym_value = sym->st_value; | |
12184 | else | |
12185 | { | |
12186 | if (h->root.type != bfd_link_hash_defined | |
12187 | && h->root.type != bfd_link_hash_defweak) | |
12188 | abort (); | |
12189 | sym_value = h->root.u.def.value; | |
12190 | } | |
12191 | sym_value += rel->r_addend; | |
4c52953f | 12192 | |
70cc837d AM |
12193 | /* If this branch reloc uses an opd sym, find the code section. */ |
12194 | opd = get_opd_info (sym_sec); | |
12195 | if (opd != NULL) | |
12196 | { | |
12197 | if (h == NULL && opd->adjust != NULL) | |
12198 | { | |
12199 | long adjust; | |
4c52953f | 12200 | |
92a9c616 | 12201 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12202 | if (adjust == -1) |
12203 | /* Assume deleted functions won't ever be called. */ | |
12204 | continue; | |
12205 | sym_value += adjust; | |
12206 | } | |
4c52953f | 12207 | |
aef36ac1 AM |
12208 | dest = opd_entry_value (sym_sec, sym_value, |
12209 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12210 | if (dest == (bfd_vma) -1) |
12211 | continue; | |
12212 | } | |
12213 | else | |
12214 | dest = (sym_value | |
12215 | + sym_sec->output_offset | |
12216 | + sym_sec->output_section->vma); | |
4c52953f | 12217 | |
70cc837d AM |
12218 | /* Ignore branch to self. */ |
12219 | if (sym_sec == isec) | |
12220 | continue; | |
4c52953f | 12221 | |
70cc837d AM |
12222 | /* If the called function uses the toc, we need a stub. */ |
12223 | if (sym_sec->has_toc_reloc | |
12224 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12225 | { |
70cc837d | 12226 | ret = 1; |
4c52953f AM |
12227 | break; |
12228 | } | |
70cc837d AM |
12229 | |
12230 | /* Assume any branch that needs a long branch stub might in fact | |
12231 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12232 | else if (dest - (isec->output_offset | |
12233 | + isec->output_section->vma | |
6911b7dc AM |
12234 | + rel->r_offset) + (1 << 25) |
12235 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12236 | ? h->other | |
12237 | : sym->st_other)) | |
4c52953f | 12238 | { |
70cc837d AM |
12239 | ret = 1; |
12240 | break; | |
12241 | } | |
12242 | ||
12243 | /* If calling back to a section in the process of being | |
12244 | tested, we can't say for sure that no toc adjusting stubs | |
12245 | are needed, so don't return zero. */ | |
12246 | else if (sym_sec->call_check_in_progress) | |
12247 | ret = 2; | |
12248 | ||
12249 | /* Branches to another section that itself doesn't have any TOC | |
12250 | references are OK. Recursively call ourselves to check. */ | |
12251 | else if (!sym_sec->call_check_done) | |
12252 | { | |
12253 | int recur; | |
12254 | ||
12255 | /* Mark current section as indeterminate, so that other | |
12256 | sections that call back to current won't be marked as | |
12257 | known. */ | |
12258 | isec->call_check_in_progress = 1; | |
12259 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12260 | isec->call_check_in_progress = 0; | |
12261 | ||
4c52953f AM |
12262 | if (recur != 0) |
12263 | { | |
70cc837d AM |
12264 | ret = recur; |
12265 | if (recur != 2) | |
12266 | break; | |
4c52953f AM |
12267 | } |
12268 | } | |
4c52953f | 12269 | } |
70cc837d AM |
12270 | |
12271 | if (local_syms != NULL | |
12272 | && (elf_symtab_hdr (isec->owner).contents | |
12273 | != (unsigned char *) local_syms)) | |
12274 | free (local_syms); | |
12275 | if (elf_section_data (isec)->relocs != relstart) | |
12276 | free (relstart); | |
9b5ecbd0 AM |
12277 | } |
12278 | ||
70cc837d AM |
12279 | if ((ret & 1) == 0 |
12280 | && isec->map_head.s != NULL | |
12281 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12282 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12283 | { | |
12284 | if (isec->map_head.s->has_toc_reloc | |
12285 | || isec->map_head.s->makes_toc_func_call) | |
12286 | ret = 1; | |
12287 | else if (!isec->map_head.s->call_check_done) | |
12288 | { | |
12289 | int recur; | |
12290 | isec->call_check_in_progress = 1; | |
12291 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12292 | isec->call_check_in_progress = 0; | |
12293 | if (recur != 0) | |
12294 | ret = recur; | |
12295 | } | |
12296 | } | |
12297 | ||
12298 | if (ret == 1) | |
12299 | isec->makes_toc_func_call = 1; | |
4c52953f | 12300 | |
9b5ecbd0 AM |
12301 | return ret; |
12302 | } | |
12303 | ||
721956f4 AM |
12304 | /* The linker repeatedly calls this function for each input section, |
12305 | in the order that input sections are linked into output sections. | |
12306 | Build lists of input sections to determine groupings between which | |
12307 | we may insert linker stubs. */ | |
12308 | ||
9b5ecbd0 | 12309 | bfd_boolean |
4ce794b7 | 12310 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12311 | { |
12312 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12313 | ||
4dfe6ac6 NC |
12314 | if (htab == NULL) |
12315 | return FALSE; | |
12316 | ||
734b6cf9 | 12317 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12318 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12319 | { |
3d6f9012 AM |
12320 | /* This happens to make the list in reverse order, |
12321 | which is what we want. */ | |
6f20ed8a AM |
12322 | htab->sec_info[isec->id].u.list |
12323 | = htab->sec_info[isec->output_section->id].u.list; | |
12324 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12325 | } |
ad8e1ba5 | 12326 | |
4c52953f | 12327 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12328 | { |
8b974ba3 AM |
12329 | /* Analyse sections that aren't already flagged as needing a |
12330 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12331 | .fixup contains branches, but only back to the function that | |
12332 | hit an exception. */ | |
12333 | if (!(isec->has_toc_reloc | |
12334 | || (isec->flags & SEC_CODE) == 0 | |
12335 | || strcmp (isec->name, ".fixup") == 0 | |
12336 | || isec->call_check_done)) | |
12337 | { | |
12338 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12339 | return FALSE; |
8b974ba3 AM |
12340 | } |
12341 | /* Make all sections use the TOC assigned for this object file. | |
12342 | This will be wrong for pasted sections; We fix that in | |
12343 | check_pasted_section(). */ | |
12344 | if (elf_gp (isec->owner) != 0) | |
12345 | htab->toc_curr = elf_gp (isec->owner); | |
12346 | } | |
12347 | ||
6f20ed8a | 12348 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12349 | return TRUE; |
721956f4 AM |
12350 | } |
12351 | ||
70cc837d AM |
12352 | /* Check that all .init and .fini sections use the same toc, if they |
12353 | have toc relocs. */ | |
12354 | ||
12355 | static bfd_boolean | |
12356 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12357 | { | |
12358 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12359 | ||
12360 | if (o != NULL) | |
12361 | { | |
12362 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12363 | bfd_vma toc_off = 0; | |
12364 | asection *i; | |
12365 | ||
12366 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12367 | if (i->has_toc_reloc) | |
12368 | { | |
12369 | if (toc_off == 0) | |
6f20ed8a AM |
12370 | toc_off = htab->sec_info[i->id].toc_off; |
12371 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12372 | return FALSE; |
12373 | } | |
6683a28d AM |
12374 | |
12375 | if (toc_off == 0) | |
12376 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12377 | if (i->makes_toc_func_call) | |
12378 | { | |
6f20ed8a | 12379 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12380 | break; |
12381 | } | |
12382 | ||
70cc837d AM |
12383 | /* Make sure the whole pasted function uses the same toc offset. */ |
12384 | if (toc_off != 0) | |
12385 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12386 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12387 | } |
12388 | return TRUE; | |
12389 | } | |
12390 | ||
12391 | bfd_boolean | |
12392 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12393 | { | |
12394 | return (check_pasted_section (info, ".init") | |
12395 | & check_pasted_section (info, ".fini")); | |
12396 | } | |
12397 | ||
721956f4 AM |
12398 | /* See whether we can group stub sections together. Grouping stub |
12399 | sections may result in fewer stubs. More importantly, we need to | |
12400 | put all .init* and .fini* stubs at the beginning of the .init or | |
12401 | .fini output sections respectively, because glibc splits the | |
12402 | _init and _fini functions into multiple parts. Putting a stub in | |
12403 | the middle of a function is not a good idea. */ | |
12404 | ||
6f20ed8a AM |
12405 | static bfd_boolean |
12406 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12407 | bfd_size_type stub_group_size, |
12408 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12409 | { |
6f20ed8a AM |
12410 | struct ppc_link_hash_table *htab; |
12411 | asection *osec; | |
7c8fe5c4 AM |
12412 | bfd_boolean suppress_size_errors; |
12413 | ||
6f20ed8a AM |
12414 | htab = ppc_hash_table (info); |
12415 | if (htab == NULL) | |
12416 | return FALSE; | |
12417 | ||
7c8fe5c4 | 12418 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12419 | if (stub_group_size == 1) |
12420 | { | |
12421 | /* Default values. */ | |
12422 | if (stubs_always_before_branch) | |
09f92717 | 12423 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12424 | else |
09f92717 | 12425 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12426 | suppress_size_errors = TRUE; |
12427 | } | |
12428 | ||
6f20ed8a | 12429 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12430 | { |
6f20ed8a AM |
12431 | asection *tail; |
12432 | ||
12433 | if (osec->id >= htab->sec_info_arr_size) | |
12434 | continue; | |
12435 | ||
12436 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12437 | while (tail != NULL) |
721956f4 | 12438 | { |
734b6cf9 AM |
12439 | asection *curr; |
12440 | asection *prev; | |
12441 | bfd_size_type total; | |
12442 | bfd_boolean big_sec; | |
12443 | bfd_vma curr_toc; | |
6f20ed8a | 12444 | struct map_stub *group; |
09f92717 | 12445 | bfd_size_type group_size; |
734b6cf9 AM |
12446 | |
12447 | curr = tail; | |
eea6121a | 12448 | total = tail->size; |
09f92717 AM |
12449 | group_size = (ppc64_elf_section_data (tail) != NULL |
12450 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12451 | ? stub_group_size >> 10 : stub_group_size); | |
12452 | ||
12453 | big_sec = total > group_size; | |
7c8fe5c4 | 12454 | if (big_sec && !suppress_size_errors) |
695344c0 | 12455 | /* xgettext:c-format */ |
871b3ab2 | 12456 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12457 | tail->owner, tail); |
6f20ed8a | 12458 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12459 | |
6f20ed8a | 12460 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12461 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12462 | < (ppc64_elf_section_data (prev) != NULL |
12463 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12464 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12465 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12466 | curr = prev; |
12467 | ||
12468 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12469 | than group_size and thus can be handled by one stub |
734b6cf9 | 12470 | section. (or the tail section is itself larger than |
09f92717 AM |
12471 | group_size, in which case we may be toast.) We should |
12472 | really be keeping track of the total size of stubs added | |
12473 | here, as stubs contribute to the final output section | |
12474 | size. That's a little tricky, and this way will only | |
12475 | break if stubs added make the total size more than 2^25, | |
12476 | ie. for the default stub_group_size, if stubs total more | |
12477 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12478 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12479 | if (group == NULL) | |
12480 | return FALSE; | |
12481 | group->link_sec = curr; | |
12482 | group->stub_sec = NULL; | |
a4b6fadd | 12483 | group->needs_save_res = 0; |
d4aaa2a0 | 12484 | group->tls_get_addr_opt_bctrl = -1u; |
a4b6fadd AM |
12485 | group->next = htab->group; |
12486 | htab->group = group; | |
734b6cf9 | 12487 | do |
721956f4 | 12488 | { |
6f20ed8a | 12489 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12490 | /* Set up this stub group. */ |
6f20ed8a | 12491 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12492 | } |
734b6cf9 AM |
12493 | while (tail != curr && (tail = prev) != NULL); |
12494 | ||
09f92717 | 12495 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12496 | bytes before the stub section can be handled by it too. |
12497 | Don't do this if we have a really large section after the | |
12498 | stubs, as adding more stubs increases the chance that | |
12499 | branches may not reach into the stub section. */ | |
12500 | if (!stubs_always_before_branch && !big_sec) | |
12501 | { | |
12502 | total = 0; | |
12503 | while (prev != NULL | |
12504 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12505 | < (ppc64_elf_section_data (prev) != NULL |
12506 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12507 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12508 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12509 | { |
12510 | tail = prev; | |
6f20ed8a AM |
12511 | prev = htab->sec_info[tail->id].u.list; |
12512 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12513 | } |
12514 | } | |
12515 | tail = prev; | |
721956f4 AM |
12516 | } |
12517 | } | |
6f20ed8a | 12518 | return TRUE; |
721956f4 AM |
12519 | } |
12520 | ||
58d180e8 AM |
12521 | static const unsigned char glink_eh_frame_cie[] = |
12522 | { | |
12523 | 0, 0, 0, 16, /* length. */ | |
12524 | 0, 0, 0, 0, /* id. */ | |
12525 | 1, /* CIE version. */ | |
12526 | 'z', 'R', 0, /* Augmentation string. */ | |
12527 | 4, /* Code alignment. */ | |
12528 | 0x78, /* Data alignment. */ | |
12529 | 65, /* RA reg. */ | |
12530 | 1, /* Augmentation size. */ | |
12531 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12532 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12533 | }; |
12534 | ||
d4aaa2a0 AM |
12535 | static size_t |
12536 | stub_eh_frame_size (struct map_stub *group, size_t align) | |
12537 | { | |
12538 | size_t this_size = 17; | |
12539 | if (group->tls_get_addr_opt_bctrl != -1u) | |
12540 | { | |
12541 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
12542 | if (to_bctrl < 64) | |
12543 | this_size += 1; | |
12544 | else if (to_bctrl < 256) | |
12545 | this_size += 2; | |
12546 | else if (to_bctrl < 65536) | |
12547 | this_size += 3; | |
12548 | else | |
12549 | this_size += 5; | |
12550 | this_size += 6; | |
12551 | } | |
12552 | this_size = (this_size + align - 1) & -align; | |
12553 | return this_size; | |
12554 | } | |
12555 | ||
d969d15f AM |
12556 | /* Stripping output sections is normally done before dynamic section |
12557 | symbols have been allocated. This function is called later, and | |
12558 | handles cases like htab->brlt which is mapped to its own output | |
12559 | section. */ | |
12560 | ||
12561 | static void | |
12562 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12563 | { | |
12564 | if (isec->size == 0 | |
12565 | && isec->output_section->size == 0 | |
53d8967a | 12566 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12567 | && !bfd_section_removed_from_list (info->output_bfd, |
12568 | isec->output_section) | |
12569 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12570 | { | |
12571 | isec->output_section->flags |= SEC_EXCLUDE; | |
12572 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12573 | info->output_bfd->section_count--; | |
12574 | } | |
12575 | } | |
12576 | ||
721956f4 AM |
12577 | /* Determine and set the size of the stub section for a final link. |
12578 | ||
12579 | The basic idea here is to examine all the relocations looking for | |
12580 | PC-relative calls to a target that is unreachable with a "bl" | |
12581 | instruction. */ | |
12582 | ||
b34976b6 | 12583 | bfd_boolean |
e7d1c40c | 12584 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12585 | { |
12586 | bfd_size_type stub_group_size; | |
b34976b6 | 12587 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12588 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12589 | ||
4dfe6ac6 NC |
12590 | if (htab == NULL) |
12591 | return FALSE; | |
12592 | ||
0e1862bb | 12593 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12594 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12595 | if (!htab->opd_abi) |
e7d1c40c AM |
12596 | htab->params->plt_thread_safe = 0; |
12597 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12598 | { |
e2458743 | 12599 | static const char *const thread_starter[] = |
794e51c0 AM |
12600 | { |
12601 | "pthread_create", | |
12602 | /* libstdc++ */ | |
12603 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12604 | /* librt */ | |
12605 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12606 | "mq_notify", "create_timer", | |
12607 | /* libanl */ | |
12608 | "getaddrinfo_a", | |
12609 | /* libgomp */ | |
2300b5a1 | 12610 | "GOMP_parallel", |
794e51c0 | 12611 | "GOMP_parallel_start", |
2300b5a1 | 12612 | "GOMP_parallel_loop_static", |
794e51c0 | 12613 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12614 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12615 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12616 | "GOMP_parallel_loop_guided", |
794e51c0 | 12617 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12618 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12619 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12620 | "GOMP_parallel_sections", |
68ffbac6 | 12621 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12622 | /* libgo */ |
12623 | "__go_go", | |
794e51c0 AM |
12624 | }; |
12625 | unsigned i; | |
12626 | ||
a4b6fadd | 12627 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12628 | { |
12629 | struct elf_link_hash_entry *h; | |
12630 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12631 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12632 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12633 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12634 | break; |
12635 | } | |
12636 | } | |
e7d1c40c AM |
12637 | stubs_always_before_branch = htab->params->group_size < 0; |
12638 | if (htab->params->group_size < 0) | |
12639 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12640 | else |
e7d1c40c | 12641 | stub_group_size = htab->params->group_size; |
721956f4 | 12642 | |
6f20ed8a AM |
12643 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12644 | return FALSE; | |
721956f4 | 12645 | |
c9301e31 AM |
12646 | #define STUB_SHRINK_ITER 20 |
12647 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12648 | exit on a stub section shrinking. This is to break out of a | |
12649 | pathological case where adding stubs on one iteration decreases | |
12650 | section gaps (perhaps due to alignment), which then requires | |
12651 | fewer or smaller stubs on the next iteration. */ | |
12652 | ||
721956f4 AM |
12653 | while (1) |
12654 | { | |
12655 | bfd *input_bfd; | |
12656 | unsigned int bfd_indx; | |
a4b6fadd | 12657 | struct map_stub *group; |
721956f4 AM |
12658 | |
12659 | htab->stub_iteration += 1; | |
721956f4 AM |
12660 | |
12661 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12662 | input_bfd != NULL; | |
c72f2fb2 | 12663 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12664 | { |
12665 | Elf_Internal_Shdr *symtab_hdr; | |
12666 | asection *section; | |
6cdc0ccc | 12667 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12668 | |
0c8d6e5c | 12669 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12670 | continue; |
12671 | ||
721956f4 | 12672 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12673 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12674 | if (symtab_hdr->sh_info == 0) |
12675 | continue; | |
12676 | ||
721956f4 AM |
12677 | /* Walk over each section attached to the input bfd. */ |
12678 | for (section = input_bfd->sections; | |
12679 | section != NULL; | |
12680 | section = section->next) | |
12681 | { | |
721956f4 | 12682 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12683 | |
12684 | /* If there aren't any relocs, then there's nothing more | |
12685 | to do. */ | |
12686 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12687 | || (section->flags & SEC_ALLOC) == 0 |
12688 | || (section->flags & SEC_LOAD) == 0 | |
12689 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12690 | || section->reloc_count == 0) |
12691 | continue; | |
12692 | ||
12693 | /* If this section is a link-once section that will be | |
12694 | discarded, then don't create any stubs. */ | |
12695 | if (section->output_section == NULL | |
927be08e | 12696 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12697 | continue; |
12698 | ||
1e2f5b6e AM |
12699 | /* Get the relocs. */ |
12700 | internal_relocs | |
4ce794b7 | 12701 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12702 | info->keep_memory); |
721956f4 | 12703 | if (internal_relocs == NULL) |
1e2f5b6e | 12704 | goto error_ret_free_local; |
721956f4 AM |
12705 | |
12706 | /* Now examine each relocation. */ | |
12707 | irela = internal_relocs; | |
12708 | irelaend = irela + section->reloc_count; | |
12709 | for (; irela < irelaend; irela++) | |
12710 | { | |
4ce794b7 AM |
12711 | enum elf_ppc64_reloc_type r_type; |
12712 | unsigned int r_indx; | |
721956f4 AM |
12713 | enum ppc_stub_type stub_type; |
12714 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12715 | asection *sym_sec, *code_sec; |
e054468f | 12716 | bfd_vma sym_value, code_value; |
721956f4 | 12717 | bfd_vma destination; |
6911b7dc | 12718 | unsigned long local_off; |
8843416a | 12719 | bfd_boolean ok_dest; |
721956f4 | 12720 | struct ppc_link_hash_entry *hash; |
8387904d | 12721 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12722 | struct elf_link_hash_entry *h; |
12723 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12724 | char *stub_name; |
12725 | const asection *id_sec; | |
74f0fb50 | 12726 | struct _opd_sec_data *opd; |
e054468f | 12727 | struct plt_entry *plt_ent; |
721956f4 AM |
12728 | |
12729 | r_type = ELF64_R_TYPE (irela->r_info); | |
12730 | r_indx = ELF64_R_SYM (irela->r_info); | |
12731 | ||
4ce794b7 | 12732 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12733 | { |
12734 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12735 | goto error_ret_free_internal; |
721956f4 AM |
12736 | } |
12737 | ||
12738 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12739 | if (r_type != R_PPC64_REL24 |
12740 | && r_type != R_PPC64_REL14 | |
12741 | && r_type != R_PPC64_REL14_BRTAKEN | |
12742 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12743 | continue; |
12744 | ||
12745 | /* Now determine the call target, its name, value, | |
12746 | section. */ | |
411e1bfb AM |
12747 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12748 | r_indx, input_bfd)) | |
12749 | goto error_ret_free_internal; | |
12750 | hash = (struct ppc_link_hash_entry *) h; | |
12751 | ||
8843416a | 12752 | ok_dest = FALSE; |
8387904d | 12753 | fdh = NULL; |
7fe2b9a6 | 12754 | sym_value = 0; |
411e1bfb | 12755 | if (hash == NULL) |
721956f4 | 12756 | { |
411e1bfb | 12757 | sym_value = sym->st_value; |
c27b8c2a AM |
12758 | if (sym_sec != NULL |
12759 | && sym_sec->output_section != NULL) | |
12760 | ok_dest = TRUE; | |
721956f4 | 12761 | } |
7fe2b9a6 AM |
12762 | else if (hash->elf.root.type == bfd_link_hash_defined |
12763 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12764 | { | |
12765 | sym_value = hash->elf.root.u.def.value; | |
12766 | if (sym_sec->output_section != NULL) | |
12767 | ok_dest = TRUE; | |
12768 | } | |
12769 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12770 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12771 | { |
99877b66 | 12772 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12773 | use the func descriptor sym instead if it is |
12774 | defined. */ | |
ceb1f1ef | 12775 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12776 | && hash->oh != NULL) |
8387904d | 12777 | { |
8c5b4e52 | 12778 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12779 | if (fdh->elf.root.type == bfd_link_hash_defined |
12780 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12781 | { | |
12782 | sym_sec = fdh->elf.root.u.def.section; | |
12783 | sym_value = fdh->elf.root.u.def.value; | |
12784 | if (sym_sec->output_section != NULL) | |
12785 | ok_dest = TRUE; | |
12786 | } | |
99877b66 AM |
12787 | else |
12788 | fdh = NULL; | |
8387904d | 12789 | } |
7fe2b9a6 AM |
12790 | } |
12791 | else | |
12792 | { | |
12793 | bfd_set_error (bfd_error_bad_value); | |
12794 | goto error_ret_free_internal; | |
721956f4 AM |
12795 | } |
12796 | ||
8843416a | 12797 | destination = 0; |
6911b7dc | 12798 | local_off = 0; |
8843416a AM |
12799 | if (ok_dest) |
12800 | { | |
12801 | sym_value += irela->r_addend; | |
12802 | destination = (sym_value | |
12803 | + sym_sec->output_offset | |
12804 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12805 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12806 | ? hash->elf.other | |
12807 | : sym->st_other); | |
8843416a AM |
12808 | } |
12809 | ||
8387904d | 12810 | code_sec = sym_sec; |
e054468f | 12811 | code_value = sym_value; |
74f0fb50 AM |
12812 | opd = get_opd_info (sym_sec); |
12813 | if (opd != NULL) | |
8387904d AM |
12814 | { |
12815 | bfd_vma dest; | |
12816 | ||
74f0fb50 | 12817 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12818 | { |
51aecdc5 | 12819 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12820 | if (adjust == -1) |
12821 | continue; | |
e054468f | 12822 | code_value += adjust; |
8387904d AM |
12823 | sym_value += adjust; |
12824 | } | |
12825 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12826 | &code_sec, &code_value, FALSE); |
8387904d AM |
12827 | if (dest != (bfd_vma) -1) |
12828 | { | |
12829 | destination = dest; | |
12830 | if (fdh != NULL) | |
12831 | { | |
12832 | /* Fixup old ABI sym to point at code | |
12833 | entry. */ | |
99877b66 | 12834 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12835 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12836 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12837 | } |
12838 | } | |
12839 | } | |
12840 | ||
721956f4 | 12841 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12842 | plt_ent = NULL; |
721956f4 | 12843 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12844 | &plt_ent, destination, |
12845 | local_off); | |
ad8e1ba5 AM |
12846 | |
12847 | if (stub_type != ppc_stub_plt_call) | |
12848 | { | |
12849 | /* Check whether we need a TOC adjusting stub. | |
12850 | Since the linker pastes together pieces from | |
12851 | different object files when creating the | |
12852 | _init and _fini functions, it may be that a | |
12853 | call to what looks like a local sym is in | |
12854 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12855 | if (code_sec != NULL |
12856 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12857 | && (htab->sec_info[code_sec->id].toc_off |
12858 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12859 | && (code_sec->has_toc_reloc |
12860 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12861 | stub_type = ppc_stub_long_branch_r2off; |
12862 | } | |
12863 | ||
721956f4 AM |
12864 | if (stub_type == ppc_stub_none) |
12865 | continue; | |
12866 | ||
411e1bfb AM |
12867 | /* __tls_get_addr calls might be eliminated. */ |
12868 | if (stub_type != ppc_stub_plt_call | |
12869 | && hash != NULL | |
8387904d AM |
12870 | && (hash == htab->tls_get_addr |
12871 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12872 | && section->has_tls_reloc |
12873 | && irela != internal_relocs) | |
12874 | { | |
12875 | /* Get tls info. */ | |
f961d9dd | 12876 | unsigned char *tls_mask; |
411e1bfb | 12877 | |
3a71aa26 | 12878 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12879 | irela - 1, input_bfd)) |
12880 | goto error_ret_free_internal; | |
37da22e5 | 12881 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
12882 | continue; |
12883 | } | |
12884 | ||
f378ab09 | 12885 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12886 | { |
6e1816be AM |
12887 | if (!htab->opd_abi |
12888 | && htab->params->plt_localentry0 != 0 | |
12889 | && is_elfv2_localentry0 (&hash->elf)) | |
12890 | htab->has_plt_localentry0 = 1; | |
12891 | else if (irela + 1 < irelaend | |
12892 | && irela[1].r_offset == irela->r_offset + 4 | |
12893 | && (ELF64_R_TYPE (irela[1].r_info) | |
12894 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12895 | { |
12896 | if (!tocsave_find (htab, INSERT, | |
12897 | &local_syms, irela + 1, input_bfd)) | |
12898 | goto error_ret_free_internal; | |
12899 | } | |
f378ab09 AM |
12900 | else |
12901 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12902 | } |
3b421ab3 | 12903 | |
721956f4 | 12904 | /* Support for grouping stub sections. */ |
6f20ed8a | 12905 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12906 | |
12907 | /* Get the name of this stub. */ | |
12908 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12909 | if (!stub_name) | |
12910 | goto error_ret_free_internal; | |
12911 | ||
12912 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12913 | stub_name, FALSE, FALSE); |
721956f4 AM |
12914 | if (stub_entry != NULL) |
12915 | { | |
12916 | /* The proper stub has already been created. */ | |
12917 | free (stub_name); | |
794e51c0 AM |
12918 | if (stub_type == ppc_stub_plt_call_r2save) |
12919 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12920 | continue; |
12921 | } | |
12922 | ||
25f53a85 | 12923 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12924 | if (stub_entry == NULL) |
12925 | { | |
12926 | free (stub_name); | |
6cdc0ccc AM |
12927 | error_ret_free_internal: |
12928 | if (elf_section_data (section)->relocs == NULL) | |
12929 | free (internal_relocs); | |
12930 | error_ret_free_local: | |
12931 | if (local_syms != NULL | |
12932 | && (symtab_hdr->contents | |
12933 | != (unsigned char *) local_syms)) | |
12934 | free (local_syms); | |
b34976b6 | 12935 | return FALSE; |
721956f4 AM |
12936 | } |
12937 | ||
ad8e1ba5 | 12938 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12939 | if (stub_type != ppc_stub_plt_call |
12940 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12941 | { |
12942 | stub_entry->target_value = code_value; | |
12943 | stub_entry->target_section = code_sec; | |
12944 | } | |
12945 | else | |
12946 | { | |
12947 | stub_entry->target_value = sym_value; | |
12948 | stub_entry->target_section = sym_sec; | |
12949 | } | |
721956f4 | 12950 | stub_entry->h = hash; |
e054468f | 12951 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
12952 | stub_entry->symtype |
12953 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 12954 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12955 | |
12956 | if (stub_entry->h != NULL) | |
12957 | htab->stub_globals += 1; | |
721956f4 AM |
12958 | } |
12959 | ||
12960 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12961 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12962 | free (internal_relocs); |
721956f4 | 12963 | } |
6cdc0ccc AM |
12964 | |
12965 | if (local_syms != NULL | |
12966 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12967 | { | |
12968 | if (!info->keep_memory) | |
12969 | free (local_syms); | |
12970 | else | |
12971 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12972 | } | |
721956f4 AM |
12973 | } |
12974 | ||
5c3dead3 | 12975 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12976 | stub sections. */ |
d4aaa2a0 AM |
12977 | for (group = htab->group; group != NULL; group = group->next) |
12978 | if (group->stub_sec != NULL) | |
ee75fd95 | 12979 | { |
d4aaa2a0 AM |
12980 | asection *stub_sec = group->stub_sec; |
12981 | ||
ea3d7d1c AM |
12982 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12983 | || stub_sec->rawsize < stub_sec->size) | |
12984 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12985 | stub_sec->rawsize = stub_sec->size; | |
ee75fd95 AM |
12986 | stub_sec->size = 0; |
12987 | stub_sec->reloc_count = 0; | |
84f5d08e | 12988 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12989 | } |
eea6121a | 12990 | |
ba21f564 AM |
12991 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12992 | || htab->brlt->rawsize < htab->brlt->size) | |
12993 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 12994 | htab->brlt->size = 0; |
84f5d08e AM |
12995 | htab->brlt->reloc_count = 0; |
12996 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12997 | if (htab->relbrlt != NULL) |
eea6121a | 12998 | htab->relbrlt->size = 0; |
721956f4 | 12999 | |
63bc6f6c | 13000 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13001 | |
a4b6fadd AM |
13002 | for (group = htab->group; group != NULL; group = group->next) |
13003 | if (group->needs_save_res) | |
13004 | group->stub_sec->size += htab->sfpr->size; | |
13005 | ||
176a0d42 AM |
13006 | if (info->emitrelocations |
13007 | && htab->glink != NULL && htab->glink->size != 0) | |
13008 | { | |
13009 | htab->glink->reloc_count = 1; | |
13010 | htab->glink->flags |= SEC_RELOC; | |
13011 | } | |
13012 | ||
58d180e8 AM |
13013 | if (htab->glink_eh_frame != NULL |
13014 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13015 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13016 | { |
2e0ce1c8 | 13017 | size_t size = 0, align = 4; |
58d180e8 | 13018 | |
d4aaa2a0 AM |
13019 | for (group = htab->group; group != NULL; group = group->next) |
13020 | if (group->stub_sec != NULL) | |
13021 | size += stub_eh_frame_size (group, align); | |
58d180e8 | 13022 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13023 | size += (24 + align - 1) & -align; |
58d180e8 | 13024 | if (size != 0) |
2e0ce1c8 AM |
13025 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13026 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13027 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13028 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13029 | htab->glink_eh_frame->size = size; | |
13030 | } | |
13031 | ||
e7d1c40c | 13032 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13033 | for (group = htab->group; group != NULL; group = group->next) |
13034 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13035 | { |
13036 | int align = abs (htab->params->plt_stub_align); | |
13037 | group->stub_sec->size | |
13038 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13039 | } | |
d4aaa2a0 AM |
13040 | |
13041 | for (group = htab->group; group != NULL; group = group->next) | |
13042 | if (group->stub_sec != NULL | |
13043 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13044 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13045 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13046 | break; |
13047 | ||
d4aaa2a0 | 13048 | if (group == NULL |
ba21f564 AM |
13049 | && (htab->brlt->rawsize == htab->brlt->size |
13050 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13051 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
13052 | && (htab->glink_eh_frame == NULL |
13053 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
13054 | break; |
13055 | ||
721956f4 | 13056 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13057 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13058 | } |
13059 | ||
da44f4e5 AM |
13060 | if (htab->glink_eh_frame != NULL |
13061 | && htab->glink_eh_frame->size != 0) | |
13062 | { | |
13063 | bfd_vma val; | |
13064 | bfd_byte *p, *last_fde; | |
13065 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13066 | struct map_stub *group; |
da44f4e5 AM |
13067 | |
13068 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
13069 | if (p == NULL) | |
13070 | return FALSE; | |
13071 | htab->glink_eh_frame->contents = p; | |
13072 | last_fde = p; | |
2e0ce1c8 | 13073 | align = 4; |
da44f4e5 AM |
13074 | |
13075 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13076 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13077 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13078 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13079 | p += last_fde_len + 4; |
da44f4e5 | 13080 | |
d4aaa2a0 AM |
13081 | for (group = htab->group; group != NULL; group = group->next) |
13082 | if (group->stub_sec != NULL) | |
da44f4e5 AM |
13083 | { |
13084 | last_fde = p; | |
d4aaa2a0 | 13085 | last_fde_len = stub_eh_frame_size (group, align) - 4; |
da44f4e5 | 13086 | /* FDE length. */ |
2e0ce1c8 | 13087 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13088 | p += 4; |
13089 | /* CIE pointer. */ | |
13090 | val = p - htab->glink_eh_frame->contents; | |
13091 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13092 | p += 4; | |
13093 | /* Offset to stub section, written later. */ | |
13094 | p += 4; | |
13095 | /* stub section size. */ | |
d4aaa2a0 | 13096 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13097 | p += 4; |
13098 | /* Augmentation. */ | |
13099 | p += 1; | |
d4aaa2a0 AM |
13100 | if (group->tls_get_addr_opt_bctrl != -1u) |
13101 | { | |
13102 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
13103 | ||
13104 | /* This FDE needs more than just the default. | |
13105 | Describe __tls_get_addr_opt stub LR. */ | |
13106 | if (to_bctrl < 64) | |
13107 | *p++ = DW_CFA_advance_loc + to_bctrl; | |
13108 | else if (to_bctrl < 256) | |
13109 | { | |
13110 | *p++ = DW_CFA_advance_loc1; | |
13111 | *p++ = to_bctrl; | |
13112 | } | |
13113 | else if (to_bctrl < 65536) | |
13114 | { | |
13115 | *p++ = DW_CFA_advance_loc2; | |
13116 | bfd_put_16 (htab->elf.dynobj, to_bctrl, p); | |
13117 | p += 2; | |
13118 | } | |
13119 | else | |
13120 | { | |
13121 | *p++ = DW_CFA_advance_loc4; | |
13122 | bfd_put_32 (htab->elf.dynobj, to_bctrl, p); | |
13123 | p += 4; | |
13124 | } | |
13125 | *p++ = DW_CFA_offset_extended_sf; | |
13126 | *p++ = 65; | |
13127 | *p++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
13128 | *p++ = DW_CFA_advance_loc + 4; | |
13129 | *p++ = DW_CFA_restore_extended; | |
13130 | *p++ = 65; | |
13131 | } | |
da44f4e5 | 13132 | /* Pad. */ |
d4aaa2a0 | 13133 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13134 | } |
13135 | if (htab->glink != NULL && htab->glink->size != 0) | |
13136 | { | |
13137 | last_fde = p; | |
2e0ce1c8 | 13138 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13139 | /* FDE length. */ |
2e0ce1c8 | 13140 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13141 | p += 4; |
13142 | /* CIE pointer. */ | |
13143 | val = p - htab->glink_eh_frame->contents; | |
13144 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13145 | p += 4; | |
13146 | /* Offset to .glink, written later. */ | |
13147 | p += 4; | |
13148 | /* .glink size. */ | |
13149 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13150 | p += 4; | |
13151 | /* Augmentation. */ | |
13152 | p += 1; | |
13153 | ||
13154 | *p++ = DW_CFA_advance_loc + 1; | |
13155 | *p++ = DW_CFA_register; | |
13156 | *p++ = 65; | |
9f08fa5c | 13157 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13158 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13159 | *p++ = DW_CFA_restore_extended; |
13160 | *p++ = 65; | |
2e0ce1c8 | 13161 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13162 | } |
13163 | /* Subsume any padding into the last FDE if user .eh_frame | |
13164 | sections are aligned more than glink_eh_frame. Otherwise any | |
13165 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13166 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13167 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13168 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13169 | htab->glink_eh_frame->size = size + pad; |
13170 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13171 | } | |
13172 | ||
d969d15f AM |
13173 | maybe_strip_output (info, htab->brlt); |
13174 | if (htab->glink_eh_frame != NULL) | |
13175 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13176 | |
b34976b6 | 13177 | return TRUE; |
721956f4 AM |
13178 | } |
13179 | ||
13180 | /* Called after we have determined section placement. If sections | |
805fc799 | 13181 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13182 | |
805fc799 | 13183 | bfd_vma |
1c865ab2 | 13184 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13185 | { |
805fc799 | 13186 | asection *s; |
a27e685f | 13187 | bfd_vma TOCstart, adjust; |
721956f4 | 13188 | |
43417696 AM |
13189 | if (info != NULL) |
13190 | { | |
13191 | struct elf_link_hash_entry *h; | |
13192 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13193 | ||
13194 | if (is_elf_hash_table (htab) | |
13195 | && htab->hgot != NULL) | |
13196 | h = htab->hgot; | |
13197 | else | |
13198 | { | |
13199 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13200 | if (is_elf_hash_table (htab)) | |
13201 | htab->hgot = h; | |
13202 | } | |
13203 | if (h != NULL | |
13204 | && h->root.type == bfd_link_hash_defined | |
13205 | && !h->root.linker_def | |
13206 | && (!is_elf_hash_table (htab) | |
13207 | || h->def_regular)) | |
13208 | { | |
13209 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13210 | + h->root.u.def.section->output_offset | |
13211 | + h->root.u.def.section->output_section->vma); | |
13212 | _bfd_set_gp_value (obfd, TOCstart); | |
13213 | return TOCstart; | |
13214 | } | |
13215 | } | |
13216 | ||
805fc799 AM |
13217 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13218 | order. The TOC starts where the first of these sections starts. */ | |
13219 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13220 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13221 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13222 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13223 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13224 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13225 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13226 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13227 | { |
13228 | /* This may happen for | |
13229 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13230 | .toc directive | |
13231 | o bad linker script | |
13232 | o --gc-sections and empty TOC sections | |
13233 | ||
13234 | FIXME: Warn user? */ | |
13235 | ||
13236 | /* Look for a likely section. We probably won't even be | |
13237 | using TOCstart. */ | |
13238 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13239 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13240 | | SEC_EXCLUDE)) | |
805fc799 AM |
13241 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13242 | break; | |
721956f4 | 13243 | if (s == NULL) |
805fc799 | 13244 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13245 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13246 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13247 | break; | |
721956f4 | 13248 | if (s == NULL) |
805fc799 | 13249 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13250 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13251 | == SEC_ALLOC) | |
805fc799 | 13252 | break; |
721956f4 | 13253 | if (s == NULL) |
805fc799 | 13254 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13255 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13256 | break; |
13257 | } | |
721956f4 | 13258 | |
805fc799 AM |
13259 | TOCstart = 0; |
13260 | if (s != NULL) | |
13261 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13262 | |
a27e685f AM |
13263 | /* Force alignment. */ |
13264 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13265 | TOCstart -= adjust; | |
1c865ab2 AM |
13266 | _bfd_set_gp_value (obfd, TOCstart); |
13267 | ||
810d4e75 | 13268 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13269 | { |
13270 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13271 | ||
810d4e75 AM |
13272 | if (htab != NULL) |
13273 | { | |
13274 | if (htab->elf.hgot != NULL) | |
13275 | { | |
a27e685f | 13276 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13277 | htab->elf.hgot->root.u.def.section = s; |
13278 | } | |
13279 | } | |
13280 | else | |
1c865ab2 | 13281 | { |
810d4e75 AM |
13282 | struct bfd_link_hash_entry *bh = NULL; |
13283 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13284 | s, TOC_BASE_OFF - adjust, |
13285 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13286 | } |
13287 | } | |
805fc799 | 13288 | return TOCstart; |
721956f4 AM |
13289 | } |
13290 | ||
a345bc8d | 13291 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13292 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13293 | |
13294 | static bfd_boolean | |
49c09209 | 13295 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13296 | { |
13297 | struct bfd_link_info *info; | |
13298 | struct ppc_link_hash_table *htab; | |
49c09209 | 13299 | struct plt_entry *ent; |
a345bc8d AM |
13300 | asection *s; |
13301 | ||
13302 | if (h->root.type == bfd_link_hash_indirect) | |
13303 | return TRUE; | |
13304 | ||
49c09209 AM |
13305 | info = inf; |
13306 | htab = ppc_hash_table (info); | |
13307 | if (htab == NULL) | |
13308 | return FALSE; | |
13309 | ||
13310 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13311 | if (ent->plt.offset != (bfd_vma) -1) | |
13312 | { | |
13313 | /* This symbol has an entry in the procedure linkage | |
13314 | table. Set it up. */ | |
13315 | Elf_Internal_Rela rela; | |
2d7ad24e | 13316 | asection *plt, *relplt; |
49c09209 AM |
13317 | bfd_byte *loc; |
13318 | ||
13319 | if (!htab->elf.dynamic_sections_created | |
13320 | || h->dynindx == -1) | |
13321 | { | |
13322 | if (!(h->def_regular | |
13323 | && (h->root.type == bfd_link_hash_defined | |
13324 | || h->root.type == bfd_link_hash_defweak))) | |
13325 | continue; | |
2d7ad24e AM |
13326 | if (h->type == STT_GNU_IFUNC) |
13327 | { | |
13328 | plt = htab->elf.iplt; | |
13329 | relplt = htab->elf.irelplt; | |
13330 | htab->local_ifunc_resolver = 1; | |
13331 | if (htab->opd_abi) | |
13332 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13333 | else | |
13334 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13335 | } | |
49c09209 | 13336 | else |
2d7ad24e AM |
13337 | { |
13338 | plt = htab->pltlocal; | |
13339 | if (bfd_link_pic (info)) | |
13340 | { | |
13341 | relplt = htab->relpltlocal; | |
13342 | if (htab->opd_abi) | |
13343 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13344 | else | |
13345 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13346 | } | |
13347 | else | |
13348 | relplt = NULL; | |
13349 | } | |
49c09209 AM |
13350 | rela.r_addend = (h->root.u.def.value |
13351 | + h->root.u.def.section->output_offset | |
13352 | + h->root.u.def.section->output_section->vma | |
13353 | + ent->addend); | |
2d7ad24e AM |
13354 | |
13355 | if (relplt == NULL) | |
13356 | { | |
13357 | loc = plt->contents + ent->plt.offset; | |
13358 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13359 | if (htab->opd_abi) | |
13360 | { | |
13361 | bfd_vma toc = elf_gp (info->output_bfd); | |
13362 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13363 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13364 | } | |
13365 | } | |
13366 | else | |
13367 | { | |
13368 | rela.r_offset = (plt->output_section->vma | |
13369 | + plt->output_offset | |
13370 | + ent->plt.offset); | |
13371 | loc = relplt->contents + (relplt->reloc_count++ | |
13372 | * sizeof (Elf64_External_Rela)); | |
13373 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13374 | } | |
49c09209 AM |
13375 | } |
13376 | else | |
13377 | { | |
13378 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13379 | + htab->elf.splt->output_offset | |
13380 | + ent->plt.offset); | |
13381 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13382 | rela.r_addend = ent->addend; | |
13383 | loc = (htab->elf.srelplt->contents | |
13384 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13385 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13386 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13387 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13388 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13389 | } |
49c09209 AM |
13390 | } |
13391 | ||
a345bc8d AM |
13392 | if (!h->pointer_equality_needed) |
13393 | return TRUE; | |
13394 | ||
13395 | if (h->def_regular) | |
13396 | return TRUE; | |
13397 | ||
9e390558 | 13398 | s = htab->global_entry; |
49c09209 AM |
13399 | if (s == NULL || s->size == 0) |
13400 | return TRUE; | |
13401 | ||
13402 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13403 | if (ent->plt.offset != (bfd_vma) -1 | |
13404 | && ent->addend == 0) | |
a345bc8d AM |
13405 | { |
13406 | bfd_byte *p; | |
13407 | asection *plt; | |
13408 | bfd_vma off; | |
13409 | ||
a345bc8d | 13410 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13411 | plt = htab->elf.splt; |
a345bc8d AM |
13412 | if (!htab->elf.dynamic_sections_created |
13413 | || h->dynindx == -1) | |
2d7ad24e AM |
13414 | { |
13415 | if (h->type == STT_GNU_IFUNC) | |
13416 | plt = htab->elf.iplt; | |
13417 | else | |
13418 | plt = htab->pltlocal; | |
13419 | } | |
49c09209 | 13420 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13421 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13422 | ||
13423 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13424 | { | |
13425 | info->callbacks->einfo | |
c1c8c1ef | 13426 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13427 | h->root.root.string); |
13428 | bfd_set_error (bfd_error_bad_value); | |
13429 | htab->stub_error = TRUE; | |
13430 | } | |
13431 | ||
7341d5e2 AM |
13432 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13433 | if (htab->params->emit_stub_syms) | |
13434 | { | |
13435 | size_t len = strlen (h->root.root.string); | |
13436 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13437 | ||
13438 | if (name == NULL) | |
13439 | return FALSE; | |
13440 | ||
13441 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13442 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13443 | if (h == NULL) | |
13444 | return FALSE; | |
13445 | if (h->root.type == bfd_link_hash_new) | |
13446 | { | |
13447 | h->root.type = bfd_link_hash_defined; | |
13448 | h->root.u.def.section = s; | |
13449 | h->root.u.def.value = p - s->contents; | |
13450 | h->ref_regular = 1; | |
13451 | h->def_regular = 1; | |
13452 | h->ref_regular_nonweak = 1; | |
13453 | h->forced_local = 1; | |
13454 | h->non_elf = 0; | |
2ec55de3 | 13455 | h->root.linker_def = 1; |
7341d5e2 AM |
13456 | } |
13457 | } | |
13458 | ||
a345bc8d AM |
13459 | if (PPC_HA (off) != 0) |
13460 | { | |
13461 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13462 | p += 4; | |
13463 | } | |
13464 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13465 | p += 4; | |
13466 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13467 | p += 4; | |
407aa07c | 13468 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13469 | break; |
13470 | } | |
13471 | return TRUE; | |
13472 | } | |
13473 | ||
49c09209 AM |
13474 | /* Write PLT relocs for locals. */ |
13475 | ||
13476 | static bfd_boolean | |
13477 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
13478 | { | |
13479 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13480 | bfd *ibfd; | |
13481 | ||
13482 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13483 | { | |
13484 | struct got_entry **lgot_ents, **end_lgot_ents; | |
13485 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13486 | Elf_Internal_Shdr *symtab_hdr; | |
13487 | bfd_size_type locsymcount; | |
13488 | Elf_Internal_Sym *local_syms = NULL; | |
13489 | struct plt_entry *ent; | |
13490 | ||
13491 | if (!is_ppc64_elf (ibfd)) | |
13492 | continue; | |
13493 | ||
13494 | lgot_ents = elf_local_got_ents (ibfd); | |
13495 | if (!lgot_ents) | |
13496 | continue; | |
13497 | ||
13498 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13499 | locsymcount = symtab_hdr->sh_info; | |
13500 | end_lgot_ents = lgot_ents + locsymcount; | |
13501 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13502 | end_local_plt = local_plt + locsymcount; | |
13503 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
13504 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
13505 | if (ent->plt.offset != (bfd_vma) -1) | |
13506 | { | |
13507 | Elf_Internal_Sym *sym; | |
13508 | asection *sym_sec; | |
13509 | asection *plt, *relplt; | |
13510 | bfd_byte *loc; | |
13511 | bfd_vma val; | |
49c09209 AM |
13512 | |
13513 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
13514 | lplt - local_plt, ibfd)) | |
13515 | { | |
13516 | if (local_syms != NULL | |
13517 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13518 | free (local_syms); | |
13519 | return FALSE; | |
13520 | } | |
13521 | ||
13522 | val = sym->st_value + ent->addend; | |
13523 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
13524 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
13525 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
13526 | ||
2d7ad24e AM |
13527 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
13528 | { | |
13529 | htab->local_ifunc_resolver = 1; | |
13530 | plt = htab->elf.iplt; | |
13531 | relplt = htab->elf.irelplt; | |
13532 | } | |
13533 | else | |
13534 | { | |
13535 | plt = htab->pltlocal; | |
13536 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
13537 | } | |
49c09209 | 13538 | |
2d7ad24e AM |
13539 | if (relplt == NULL) |
13540 | { | |
13541 | loc = plt->contents + ent->plt.offset; | |
13542 | bfd_put_64 (info->output_bfd, val, loc); | |
13543 | if (htab->opd_abi) | |
13544 | { | |
13545 | bfd_vma toc = elf_gp (ibfd); | |
13546 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13547 | } | |
13548 | } | |
49c09209 | 13549 | else |
2d7ad24e AM |
13550 | { |
13551 | Elf_Internal_Rela rela; | |
13552 | rela.r_offset = (ent->plt.offset | |
13553 | + plt->output_offset | |
13554 | + plt->output_section->vma); | |
13555 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13556 | { | |
13557 | if (htab->opd_abi) | |
13558 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13559 | else | |
13560 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13561 | } | |
13562 | else | |
13563 | { | |
13564 | if (htab->opd_abi) | |
13565 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13566 | else | |
13567 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13568 | } | |
13569 | rela.r_addend = val; | |
13570 | loc = relplt->contents + (relplt->reloc_count++ | |
13571 | * sizeof (Elf64_External_Rela)); | |
13572 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13573 | } | |
49c09209 AM |
13574 | } |
13575 | ||
13576 | if (local_syms != NULL | |
13577 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13578 | { | |
13579 | if (!info->keep_memory) | |
13580 | free (local_syms); | |
13581 | else | |
13582 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13583 | } | |
13584 | } | |
13585 | return TRUE; | |
13586 | } | |
13587 | ||
721956f4 AM |
13588 | /* Build all the stubs associated with the current output file. |
13589 | The stubs are kept in a hash table attached to the main linker | |
13590 | hash table. This function is called via gldelf64ppc_finish. */ | |
13591 | ||
b34976b6 | 13592 | bfd_boolean |
e7d1c40c | 13593 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13594 | char **stats) |
5d1634d7 AM |
13595 | { |
13596 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13597 | struct map_stub *group; |
721956f4 | 13598 | asection *stub_sec; |
5d1634d7 | 13599 | bfd_byte *p; |
e717da7e | 13600 | int stub_sec_count = 0; |
5d1634d7 | 13601 | |
4dfe6ac6 NC |
13602 | if (htab == NULL) |
13603 | return FALSE; | |
13604 | ||
eea6121a | 13605 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 AM |
13606 | for (group = htab->group; group != NULL; group = group->next) |
13607 | if ((stub_sec = group->stub_sec) != NULL | |
eea6121a | 13608 | && stub_sec->size != 0) |
e717da7e | 13609 | { |
e7d1c40c | 13610 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
13611 | if (stub_sec->contents == NULL) |
13612 | return FALSE; | |
eea6121a | 13613 | stub_sec->size = 0; |
e717da7e | 13614 | } |
5d1634d7 | 13615 | |
23eb7e01 | 13616 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13617 | { |
9f951329 | 13618 | unsigned int indx; |
ad8e1ba5 | 13619 | bfd_vma plt0; |
9f951329 | 13620 | |
721956f4 | 13621 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13622 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13623 | { |
13624 | struct elf_link_hash_entry *h; | |
468392fb AM |
13625 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13626 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13627 | if (h == NULL) |
13628 | return FALSE; | |
13629 | if (h->root.type == bfd_link_hash_new) | |
13630 | { | |
13631 | h->root.type = bfd_link_hash_defined; | |
13632 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13633 | h->root.u.def.value = 8; |
f5385ebf AM |
13634 | h->ref_regular = 1; |
13635 | h->def_regular = 1; | |
13636 | h->ref_regular_nonweak = 1; | |
13637 | h->forced_local = 1; | |
13638 | h->non_elf = 0; | |
2ec55de3 | 13639 | h->root.linker_def = 1; |
97b639ba AM |
13640 | } |
13641 | } | |
33e44f2e AM |
13642 | plt0 = (htab->elf.splt->output_section->vma |
13643 | + htab->elf.splt->output_offset | |
13644 | - 16); | |
176a0d42 AM |
13645 | if (info->emitrelocations) |
13646 | { | |
13647 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13648 | if (r == NULL) | |
13649 | return FALSE; | |
13650 | r->r_offset = (htab->glink->output_offset | |
13651 | + htab->glink->output_section->vma); | |
13652 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13653 | r->r_addend = plt0; | |
13654 | } | |
4ce794b7 | 13655 | p = htab->glink->contents; |
176a0d42 | 13656 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13657 | bfd_put_64 (htab->glink->owner, plt0, p); |
13658 | p += 8; | |
b9e5796b AM |
13659 | if (htab->opd_abi) |
13660 | { | |
13661 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13662 | p += 4; | |
13663 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13664 | p += 4; | |
13665 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13666 | p += 4; | |
13667 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13668 | p += 4; | |
13669 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13670 | p += 4; | |
13671 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13672 | p += 4; | |
13673 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13674 | p += 4; | |
13675 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13676 | p += 4; | |
13677 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13678 | p += 4; | |
13679 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13680 | p += 4; | |
13681 | } | |
13682 | else | |
13683 | { | |
13684 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13685 | p += 4; | |
13686 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13687 | p += 4; | |
13688 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13689 | p += 4; | |
f378ab09 AM |
13690 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13691 | p += 4; | |
b9e5796b AM |
13692 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13693 | p += 4; | |
13694 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13695 | p += 4; | |
13696 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13697 | p += 4; | |
13698 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13699 | p += 4; | |
13700 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13701 | p += 4; | |
13702 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13703 | p += 4; | |
13704 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13705 | p += 4; | |
13706 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13707 | p += 4; | |
13708 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13709 | p += 4; | |
13710 | } | |
407aa07c AM |
13711 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13712 | p += 4; | |
c75bc4f7 | 13713 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13714 | |
9f951329 AM |
13715 | /* Build the .glink lazy link call stubs. */ |
13716 | indx = 0; | |
9e390558 | 13717 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13718 | { |
b9e5796b | 13719 | if (htab->opd_abi) |
9f951329 | 13720 | { |
b9e5796b AM |
13721 | if (indx < 0x8000) |
13722 | { | |
13723 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13724 | p += 4; | |
13725 | } | |
13726 | else | |
13727 | { | |
13728 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13729 | p += 4; | |
13730 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13731 | p); | |
13732 | p += 4; | |
13733 | } | |
9f951329 | 13734 | } |
4ce794b7 | 13735 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13736 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13737 | indx++; |
9f951329 AM |
13738 | p += 4; |
13739 | } | |
5d1634d7 | 13740 | } |
5d1634d7 | 13741 | |
49c09209 AM |
13742 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13743 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13744 | ||
13745 | if (!write_plt_relocs_for_local_syms (info)) | |
13746 | return FALSE; | |
9e390558 | 13747 | |
7341d5e2 | 13748 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13749 | { |
4ce794b7 | 13750 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13751 | htab->brlt->size); |
4ce794b7 | 13752 | if (htab->brlt->contents == NULL) |
b34976b6 | 13753 | return FALSE; |
721956f4 | 13754 | } |
ee75fd95 | 13755 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13756 | { |
13757 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13758 | htab->relbrlt->size); |
63bc6f6c AM |
13759 | if (htab->relbrlt->contents == NULL) |
13760 | return FALSE; | |
13761 | } | |
5d1634d7 | 13762 | |
721956f4 AM |
13763 | /* Build the stubs as directed by the stub hash table. */ |
13764 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13765 | |
a4b6fadd AM |
13766 | for (group = htab->group; group != NULL; group = group->next) |
13767 | if (group->needs_save_res) | |
7dda8d3c | 13768 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13769 | |
aa8a7074 AM |
13770 | if (htab->relbrlt != NULL) |
13771 | htab->relbrlt->reloc_count = 0; | |
13772 | ||
e7d1c40c | 13773 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13774 | for (group = htab->group; group != NULL; group = group->next) |
13775 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13776 | { |
13777 | int align = abs (htab->params->plt_stub_align); | |
13778 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13779 | } | |
794e51c0 | 13780 | |
7dda8d3c AM |
13781 | for (group = htab->group; group != NULL; group = group->next) |
13782 | if (group->needs_save_res) | |
13783 | { | |
13784 | stub_sec = group->stub_sec; | |
13785 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13786 | htab->sfpr->contents, htab->sfpr->size); | |
13787 | if (htab->params->emit_stub_syms) | |
13788 | { | |
13789 | unsigned int i; | |
13790 | ||
13791 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13792 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13793 | return FALSE; | |
13794 | } | |
13795 | } | |
13796 | ||
d4aaa2a0 AM |
13797 | for (group = htab->group; group != NULL; group = group->next) |
13798 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13799 | { |
13800 | stub_sec_count += 1; | |
c9301e31 AM |
13801 | if (stub_sec->rawsize != stub_sec->size |
13802 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13803 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13804 | break; |
13805 | } | |
5d1634d7 | 13806 | |
25516cc5 | 13807 | if (group != NULL) |
5d1634d7 | 13808 | { |
b34976b6 | 13809 | htab->stub_error = TRUE; |
cf97bcb0 | 13810 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13811 | } |
721956f4 | 13812 | |
d2a300cf AM |
13813 | if (htab->stub_error) |
13814 | return FALSE; | |
13815 | ||
13816 | if (stats != NULL) | |
13817 | { | |
db84fff3 | 13818 | size_t len; |
d2a300cf AM |
13819 | *stats = bfd_malloc (500); |
13820 | if (*stats == NULL) | |
13821 | return FALSE; | |
13822 | ||
db84fff3 AM |
13823 | len = sprintf (*stats, |
13824 | ngettext ("linker stubs in %u group\n", | |
13825 | "linker stubs in %u groups\n", | |
13826 | stub_sec_count), | |
13827 | stub_sec_count); | |
13828 | sprintf (*stats + len, _(" branch %lu\n" | |
13829 | " toc adjust %lu\n" | |
13830 | " long branch %lu\n" | |
13831 | " long toc adj %lu\n" | |
13832 | " plt call %lu\n" | |
13833 | " plt call toc %lu\n" | |
13834 | " global entry %lu"), | |
4ce794b7 AM |
13835 | htab->stub_count[ppc_stub_long_branch - 1], |
13836 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13837 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13838 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13839 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13840 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13841 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13842 | } |
13843 | return TRUE; | |
5bd4f169 AM |
13844 | } |
13845 | ||
60124e18 AM |
13846 | /* What to do when ld finds relocations against symbols defined in |
13847 | discarded sections. */ | |
13848 | ||
13849 | static unsigned int | |
13850 | ppc64_elf_action_discarded (asection *sec) | |
13851 | { | |
13852 | if (strcmp (".opd", sec->name) == 0) | |
13853 | return 0; | |
13854 | ||
13855 | if (strcmp (".toc", sec->name) == 0) | |
13856 | return 0; | |
13857 | ||
bce50a28 JJ |
13858 | if (strcmp (".toc1", sec->name) == 0) |
13859 | return 0; | |
13860 | ||
60124e18 AM |
13861 | return _bfd_elf_default_action_discarded (sec); |
13862 | } | |
13863 | ||
5bd4f169 AM |
13864 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13865 | to handle the relocations for a section. | |
13866 | ||
13867 | The relocs are always passed as Rela structures; if the section | |
13868 | actually uses Rel structures, the r_addend field will always be | |
13869 | zero. | |
13870 | ||
13871 | This function is responsible for adjust the section contents as | |
13872 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13873 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13874 | necessary. |
13875 | ||
13876 | This function does not have to worry about setting the reloc | |
13877 | address or the reloc symbol index. | |
13878 | ||
13879 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13880 | ||
13881 | LOCAL_SECTIONS is an array giving the section in the input file | |
13882 | corresponding to the st_shndx field of each local symbol. | |
13883 | ||
13884 | The global hash table entry for the global symbols can be found | |
13885 | via elf_sym_hashes (input_bfd). | |
13886 | ||
1049f94e | 13887 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13888 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13889 | going to be the section symbol corresponding to the output | |
13890 | section, which means that the addend must be adjusted | |
13891 | accordingly. */ | |
13892 | ||
b34976b6 | 13893 | static bfd_boolean |
4ce794b7 AM |
13894 | ppc64_elf_relocate_section (bfd *output_bfd, |
13895 | struct bfd_link_info *info, | |
13896 | bfd *input_bfd, | |
13897 | asection *input_section, | |
13898 | bfd_byte *contents, | |
13899 | Elf_Internal_Rela *relocs, | |
13900 | Elf_Internal_Sym *local_syms, | |
13901 | asection **local_sections) | |
5bd4f169 | 13902 | { |
65f38f15 | 13903 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13904 | Elf_Internal_Shdr *symtab_hdr; |
13905 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13906 | Elf_Internal_Rela *rel; |
c316a17c | 13907 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13908 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13909 | Elf_Internal_Rela outrel; |
13910 | bfd_byte *loc; | |
411e1bfb | 13911 | struct got_entry **local_got_ents; |
5bd4f169 | 13912 | bfd_vma TOCstart; |
b34976b6 AM |
13913 | bfd_boolean ret = TRUE; |
13914 | bfd_boolean is_opd; | |
794e51c0 AM |
13915 | /* Assume 'at' branch hints. */ |
13916 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13917 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13918 | |
65f38f15 | 13919 | /* Initialize howto table if needed. */ |
5bd4f169 | 13920 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13921 | ppc_howto_init (); |
13922 | ||
65f38f15 | 13923 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13924 | if (htab == NULL) |
13925 | return FALSE; | |
ee75fd95 AM |
13926 | |
13927 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13928 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13929 | return TRUE; |
13930 | ||
0c8d6e5c | 13931 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13932 | |
411e1bfb | 13933 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13934 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13935 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13936 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13937 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13938 | |
c316a17c | 13939 | rel = wrel = relocs; |
5bd4f169 | 13940 | relend = relocs + input_section->reloc_count; |
c316a17c | 13941 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13942 | { |
04c9666a | 13943 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13944 | bfd_vma addend; |
5bd4f169 AM |
13945 | bfd_reloc_status_type r; |
13946 | Elf_Internal_Sym *sym; | |
13947 | asection *sec; | |
039b3fef AM |
13948 | struct elf_link_hash_entry *h_elf; |
13949 | struct ppc_link_hash_entry *h; | |
13950 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13951 | const char *sym_name; |
0d4792f7 | 13952 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13953 | bfd_vma toc_addend; |
f961d9dd AM |
13954 | unsigned char tls_mask, tls_gd, tls_type; |
13955 | unsigned char sym_type; | |
5bd4f169 | 13956 | bfd_vma relocation; |
23cedd1d | 13957 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 13958 | bfd_boolean warned; |
bc30df16 | 13959 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13960 | unsigned int insn; |
e11840f9 | 13961 | unsigned int mask; |
721956f4 AM |
13962 | struct ppc_stub_hash_entry *stub_entry; |
13963 | bfd_vma max_br_offset; | |
13964 | bfd_vma from; | |
c316a17c | 13965 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13966 | reloc_howto_type *howto; |
13967 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13968 | |
c316a17c AM |
13969 | again: |
13970 | orig_rel = *rel; | |
13971 | ||
4ce794b7 | 13972 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13973 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13974 | |
13975 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13976 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13977 | proper TOC base to use. */ | |
13978 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13979 | && wrel != relocs |
13980 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13981 | && is_opd) |
c316a17c | 13982 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13983 | |
4ce794b7 AM |
13984 | sym = NULL; |
13985 | sec = NULL; | |
039b3fef | 13986 | h_elf = NULL; |
4ce794b7 | 13987 | sym_name = NULL; |
b34976b6 AM |
13988 | unresolved_reloc = FALSE; |
13989 | warned = FALSE; | |
65f38f15 | 13990 | |
0b13192e | 13991 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13992 | { |
13993 | /* It's a local symbol. */ | |
74f0fb50 | 13994 | struct _opd_sec_data *opd; |
4025353c | 13995 | |
5bd4f169 AM |
13996 | sym = local_syms + r_symndx; |
13997 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13998 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13999 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14000 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14001 | opd = get_opd_info (sec); |
14002 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14003 | { |
51aecdc5 AM |
14004 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14005 | + rel->r_addend)]; | |
4025353c AM |
14006 | if (adjust == -1) |
14007 | relocation = 0; | |
14008 | else | |
4cc603a5 AM |
14009 | { |
14010 | /* If this is a relocation against the opd section sym | |
14011 | and we have edited .opd, adjust the reloc addend so | |
14012 | that ld -r and ld --emit-relocs output is correct. | |
14013 | If it is a reloc against some other .opd symbol, | |
14014 | then the symbol value will be adjusted later. */ | |
14015 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14016 | rel->r_addend += adjust; | |
14017 | else | |
14018 | relocation += adjust; | |
14019 | } | |
1e2f5b6e | 14020 | } |
5bd4f169 AM |
14021 | } |
14022 | else | |
14023 | { | |
62d887d4 L |
14024 | bfd_boolean ignored; |
14025 | ||
b2a8e766 AM |
14026 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14027 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14028 | h_elf, sec, relocation, |
62d887d4 | 14029 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14030 | sym_name = h_elf->root.root.string; |
14031 | sym_type = h_elf->type; | |
b69fdb4e AM |
14032 | if (sec != NULL |
14033 | && sec->owner == output_bfd | |
14034 | && strcmp (sec->name, ".opd") == 0) | |
14035 | { | |
14036 | /* This is a symbol defined in a linker script. All | |
14037 | such are defined in output sections, even those | |
14038 | defined by simple assignment from a symbol defined in | |
14039 | an input section. Transfer the symbol to an | |
14040 | appropriate input .opd section, so that a branch to | |
14041 | this symbol will be mapped to the location specified | |
14042 | by the opd entry. */ | |
14043 | struct bfd_link_order *lo; | |
14044 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14045 | if (lo->type == bfd_indirect_link_order) | |
14046 | { | |
14047 | asection *isec = lo->u.indirect.section; | |
14048 | if (h_elf->root.u.def.value >= isec->output_offset | |
14049 | && h_elf->root.u.def.value < (isec->output_offset | |
14050 | + isec->size)) | |
14051 | { | |
14052 | h_elf->root.u.def.value -= isec->output_offset; | |
14053 | h_elf->root.u.def.section = isec; | |
14054 | sec = isec; | |
14055 | break; | |
14056 | } | |
14057 | } | |
14058 | } | |
5bd4f169 | 14059 | } |
039b3fef | 14060 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 14061 | |
dbaa2011 | 14062 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14063 | { |
14064 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14065 | input_bfd, input_section, | |
14066 | contents + rel->r_offset); | |
14067 | wrel->r_offset = rel->r_offset; | |
14068 | wrel->r_info = 0; | |
14069 | wrel->r_addend = 0; | |
14070 | ||
14071 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14072 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14073 | non-debug to preserve relocs in .eh_frame which the |
14074 | eh_frame editing code expects to be present. */ | |
14075 | if (bfd_link_relocatable (info) | |
14076 | && (input_section->flags & SEC_DEBUGGING)) | |
14077 | wrel--; | |
14078 | ||
14079 | continue; | |
14080 | } | |
ab96bf03 | 14081 | |
0e1862bb | 14082 | if (bfd_link_relocatable (info)) |
c316a17c | 14083 | goto copy_reloc; |
ab96bf03 | 14084 | |
f40da81b AM |
14085 | if (h != NULL && &h->elf == htab->elf.hgot) |
14086 | { | |
6f20ed8a | 14087 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14088 | sec = bfd_abs_section_ptr; |
14089 | unresolved_reloc = FALSE; | |
14090 | } | |
14091 | ||
951fd09b AM |
14092 | /* TLS optimizations. Replace instruction sequences and relocs |
14093 | based on information we collected in tls_optimize. We edit | |
14094 | RELOCS so that --emit-relocs will output something sensible | |
14095 | for the final instruction stream. */ | |
14096 | tls_mask = 0; | |
14097 | tls_gd = 0; | |
0d4792f7 | 14098 | toc_symndx = 0; |
727fc41e AM |
14099 | if (h != NULL) |
14100 | tls_mask = h->tls_mask; | |
14101 | else if (local_got_ents != NULL) | |
411e1bfb | 14102 | { |
e054468f AM |
14103 | struct plt_entry **local_plt = (struct plt_entry **) |
14104 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14105 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14106 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14107 | tls_mask = lgot_masks[r_symndx]; |
14108 | } | |
37da22e5 | 14109 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14110 | && (r_type == R_PPC64_TLS |
14111 | || r_type == R_PPC64_TLSGD | |
14112 | || r_type == R_PPC64_TLSLD)) | |
14113 | { | |
14114 | /* Check for toc tls entries. */ | |
f961d9dd | 14115 | unsigned char *toc_tls; |
0d4792f7 | 14116 | |
727fc41e AM |
14117 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14118 | &local_syms, rel, input_bfd)) | |
14119 | return FALSE; | |
0d4792f7 | 14120 | |
727fc41e AM |
14121 | if (toc_tls) |
14122 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14123 | } |
14124 | ||
14125 | /* Check that tls relocs are used with tls syms, and non-tls | |
14126 | relocs are used with non-tls syms. */ | |
cf35638d | 14127 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14128 | && r_type != R_PPC64_NONE |
14129 | && (h == NULL | |
039b3fef AM |
14130 | || h->elf.root.type == bfd_link_hash_defined |
14131 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
14132 | && (IS_PPC64_TLS_RELOC (r_type) |
14133 | != (sym_type == STT_TLS | |
14134 | || (sym_type == STT_SECTION | |
14135 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 14136 | { |
37da22e5 | 14137 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14138 | && (r_type == R_PPC64_TLS |
14139 | || r_type == R_PPC64_TLSGD | |
14140 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14141 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14142 | ; | |
14143 | else | |
25f53a85 | 14144 | info->callbacks->einfo |
1d483afe | 14145 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14146 | /* xgettext:c-format */ |
c1c8c1ef | 14147 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14148 | /* xgettext:c-format */ |
c1c8c1ef | 14149 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14150 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14151 | ppc64_elf_howto_table[r_type]->name, |
14152 | sym_name); | |
411e1bfb AM |
14153 | } |
14154 | ||
14155 | /* Ensure reloc mapping code below stays sane. */ | |
14156 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14157 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14158 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14159 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14160 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14161 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14162 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14163 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14164 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14165 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14166 | abort (); | |
0d4792f7 | 14167 | |
411e1bfb AM |
14168 | switch (r_type) |
14169 | { | |
14170 | default: | |
411e1bfb AM |
14171 | break; |
14172 | ||
ba761f19 | 14173 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14174 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14175 | if ((insn & (0x3f << 26)) != 58u << 26) |
14176 | abort (); | |
14177 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14178 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14179 | r_type = R_PPC64_TOC16_LO; |
14180 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14181 | break; | |
14182 | ||
411e1bfb AM |
14183 | case R_PPC64_TOC16: |
14184 | case R_PPC64_TOC16_LO: | |
14185 | case R_PPC64_TOC16_DS: | |
14186 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14187 | { |
14188 | /* Check for toc tls entries. */ | |
f961d9dd | 14189 | unsigned char *toc_tls; |
951fd09b | 14190 | int retval; |
411e1bfb | 14191 | |
3a71aa26 AM |
14192 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14193 | &local_syms, rel, input_bfd); | |
951fd09b | 14194 | if (retval == 0) |
411e1bfb AM |
14195 | return FALSE; |
14196 | ||
14197 | if (toc_tls) | |
14198 | { | |
951fd09b | 14199 | tls_mask = *toc_tls; |
411e1bfb AM |
14200 | if (r_type == R_PPC64_TOC16_DS |
14201 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14202 | { |
37da22e5 | 14203 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14204 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14205 | goto toctprel; | |
14206 | } | |
411e1bfb | 14207 | else |
951fd09b AM |
14208 | { |
14209 | /* If we found a GD reloc pair, then we might be | |
14210 | doing a GD->IE transition. */ | |
14211 | if (retval == 2) | |
14212 | { | |
14213 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
14214 | if ((tls_mask & TLS_TLS) != 0 |
14215 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14216 | goto tls_ldgd_opt; |
951fd09b AM |
14217 | } |
14218 | else if (retval == 3) | |
14219 | { | |
37da22e5 AM |
14220 | if ((tls_mask & TLS_TLS) != 0 |
14221 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14222 | goto tls_ldgd_opt; |
951fd09b AM |
14223 | } |
14224 | } | |
411e1bfb AM |
14225 | } |
14226 | } | |
14227 | break; | |
14228 | ||
9d6ded02 AM |
14229 | case R_PPC64_GOT_TPREL16_HI: |
14230 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14231 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14232 | && (tls_mask & TLS_TPREL) == 0) |
14233 | { | |
14234 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14235 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14236 | r_type = R_PPC64_NONE; |
14237 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14238 | } | |
14239 | break; | |
14240 | ||
411e1bfb AM |
14241 | case R_PPC64_GOT_TPREL16_DS: |
14242 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14243 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14244 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14245 | { |
81407a69 | 14246 | toctprel: |
95f0d0d2 | 14247 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14248 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14249 | insn &= 31 << 21; |
14250 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14251 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14252 | contents + rel->r_offset - d_offset); |
411e1bfb | 14253 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14254 | if (toc_symndx != 0) |
14255 | { | |
14256 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14257 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14258 | /* We changed the symbol. Start over in order to |
14259 | get h, sym, sec etc. right. */ | |
c316a17c | 14260 | goto again; |
0d4792f7 AM |
14261 | } |
14262 | else | |
14263 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14264 | } |
14265 | break; | |
14266 | ||
14267 | case R_PPC64_TLS: | |
37da22e5 | 14268 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14269 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14270 | { |
95f0d0d2 | 14271 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
14272 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14273 | if (insn == 0) | |
411e1bfb | 14274 | abort (); |
95f0d0d2 | 14275 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 14276 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
14277 | PPC64_TPREL16_LO which is at low-order half-word. */ |
14278 | rel->r_offset += d_offset; | |
0d4792f7 AM |
14279 | r_type = R_PPC64_TPREL16_LO; |
14280 | if (toc_symndx != 0) | |
14281 | { | |
14282 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14283 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14284 | /* We changed the symbol. Start over in order to |
14285 | get h, sym, sec etc. right. */ | |
c316a17c | 14286 | goto again; |
0d4792f7 AM |
14287 | } |
14288 | else | |
14289 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14290 | } |
14291 | break; | |
14292 | ||
411e1bfb AM |
14293 | case R_PPC64_GOT_TLSGD16_HI: |
14294 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14295 | tls_gd = TLS_TPRELGD; |
37da22e5 | 14296 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14297 | goto tls_gdld_hi; |
14298 | break; | |
14299 | ||
411e1bfb AM |
14300 | case R_PPC64_GOT_TLSLD16_HI: |
14301 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14302 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14303 | { |
951fd09b AM |
14304 | tls_gdld_hi: |
14305 | if ((tls_mask & tls_gd) != 0) | |
14306 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14307 | + R_PPC64_GOT_TPREL16_DS); | |
14308 | else | |
411e1bfb | 14309 | { |
4fe5ca5b | 14310 | rel->r_offset -= d_offset; |
95f0d0d2 | 14311 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14312 | r_type = R_PPC64_NONE; |
411e1bfb | 14313 | } |
951fd09b | 14314 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14315 | } |
14316 | break; | |
14317 | ||
951fd09b AM |
14318 | case R_PPC64_GOT_TLSGD16: |
14319 | case R_PPC64_GOT_TLSGD16_LO: | |
14320 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 14321 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14322 | goto tls_ldgd_opt; |
951fd09b | 14323 | break; |
411e1bfb | 14324 | |
951fd09b AM |
14325 | case R_PPC64_GOT_TLSLD16: |
14326 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14327 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14328 | { |
b9f04fe0 | 14329 | unsigned int insn1, insn2; |
102890f0 AM |
14330 | bfd_vma offset; |
14331 | ||
14332 | tls_ldgd_opt: | |
727fc41e AM |
14333 | offset = (bfd_vma) -1; |
14334 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14335 | __tls_get_addr calls, we must trust that the call | |
14336 | stays with its arg setup insns, ie. that the next | |
14337 | reloc is the __tls_get_addr call associated with | |
14338 | the current reloc. Edit both insns. */ | |
14339 | if (input_section->has_tls_get_addr_call | |
14340 | && rel + 1 < relend | |
14341 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14342 | htab->tls_get_addr, | |
14343 | htab->tls_get_addr_fd)) | |
14344 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14345 | /* We read the low GOT_TLS (or TOC16) insn because we |
14346 | need to keep the destination reg. It may be | |
14347 | something other than the usual r3, and moved to r3 | |
14348 | before the call by intervening code. */ | |
95f0d0d2 | 14349 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14350 | contents + rel->r_offset - d_offset); |
102890f0 | 14351 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14352 | { |
102890f0 | 14353 | /* IE */ |
b86ac8e3 | 14354 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
14355 | insn1 |= 58 << 26; /* ld */ |
14356 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 14357 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14358 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
14359 | if ((tls_mask & TLS_EXPLICIT) == 0) |
14360 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14361 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 14362 | else |
102890f0 AM |
14363 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
14364 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14365 | } | |
14366 | else | |
14367 | { | |
14368 | /* LE */ | |
b86ac8e3 AM |
14369 | insn1 &= 0x1f << 21; |
14370 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14371 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14372 | if (tls_gd == 0) | |
951fd09b | 14373 | { |
102890f0 | 14374 | /* Was an LD reloc. */ |
1d483afe AM |
14375 | if (toc_symndx) |
14376 | sec = local_sections[toc_symndx]; | |
14377 | for (r_symndx = 0; | |
14378 | r_symndx < symtab_hdr->sh_info; | |
14379 | r_symndx++) | |
14380 | if (local_sections[r_symndx] == sec) | |
14381 | break; | |
14382 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14383 | r_symndx = STN_UNDEF; |
102890f0 | 14384 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14385 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
14386 | rel->r_addend -= (local_syms[r_symndx].st_value |
14387 | + sec->output_offset | |
14388 | + sec->output_section->vma); | |
951fd09b | 14389 | } |
102890f0 | 14390 | else if (toc_symndx != 0) |
3a71aa26 AM |
14391 | { |
14392 | r_symndx = toc_symndx; | |
14393 | rel->r_addend = toc_addend; | |
14394 | } | |
102890f0 AM |
14395 | r_type = R_PPC64_TPREL16_HA; |
14396 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14397 | if (offset != (bfd_vma) -1) |
14398 | { | |
14399 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14400 | R_PPC64_TPREL16_LO); | |
14401 | rel[1].r_offset = offset + d_offset; | |
14402 | rel[1].r_addend = rel->r_addend; | |
14403 | } | |
102890f0 | 14404 | } |
95f0d0d2 | 14405 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 14406 | contents + rel->r_offset - d_offset); |
727fc41e | 14407 | if (offset != (bfd_vma) -1) |
b9f04fe0 | 14408 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
14409 | if ((tls_mask & tls_gd) == 0 |
14410 | && (tls_gd == 0 || toc_symndx != 0)) | |
14411 | { | |
14412 | /* We changed the symbol. Start over in order | |
14413 | to get h, sym, sec etc. right. */ | |
c316a17c | 14414 | goto again; |
727fc41e AM |
14415 | } |
14416 | } | |
14417 | break; | |
14418 | ||
14419 | case R_PPC64_TLSGD: | |
37da22e5 | 14420 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 14421 | && rel + 1 < relend) |
727fc41e | 14422 | { |
b9f04fe0 | 14423 | unsigned int insn2; |
727fc41e AM |
14424 | bfd_vma offset = rel->r_offset; |
14425 | ||
23cedd1d AM |
14426 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14427 | { | |
14428 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14429 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14430 | break; | |
14431 | } | |
14432 | ||
14433 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14434 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14435 | ||
727fc41e AM |
14436 | if ((tls_mask & TLS_TPRELGD) != 0) |
14437 | { | |
14438 | /* IE */ | |
14439 | r_type = R_PPC64_NONE; | |
14440 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
14441 | } | |
14442 | else | |
14443 | { | |
14444 | /* LE */ | |
14445 | if (toc_symndx != 0) | |
14446 | { | |
14447 | r_symndx = toc_symndx; | |
14448 | rel->r_addend = toc_addend; | |
14449 | } | |
14450 | r_type = R_PPC64_TPREL16_LO; | |
14451 | rel->r_offset = offset + d_offset; | |
14452 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14453 | } | |
14454 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14455 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14456 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14457 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14458 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 14459 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 14460 | goto again; |
411e1bfb | 14461 | } |
411e1bfb AM |
14462 | break; |
14463 | ||
727fc41e | 14464 | case R_PPC64_TLSLD: |
37da22e5 | 14465 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 14466 | && rel + 1 < relend) |
727fc41e | 14467 | { |
b9f04fe0 | 14468 | unsigned int insn2; |
727fc41e AM |
14469 | bfd_vma offset = rel->r_offset; |
14470 | ||
23cedd1d AM |
14471 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14472 | { | |
14473 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14474 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14475 | break; | |
14476 | } | |
14477 | ||
14478 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14479 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14480 | ||
727fc41e AM |
14481 | if (toc_symndx) |
14482 | sec = local_sections[toc_symndx]; | |
14483 | for (r_symndx = 0; | |
14484 | r_symndx < symtab_hdr->sh_info; | |
14485 | r_symndx++) | |
14486 | if (local_sections[r_symndx] == sec) | |
14487 | break; | |
14488 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14489 | r_symndx = STN_UNDEF; |
727fc41e | 14490 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14491 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
14492 | rel->r_addend -= (local_syms[r_symndx].st_value |
14493 | + sec->output_offset | |
14494 | + sec->output_section->vma); | |
14495 | ||
14496 | r_type = R_PPC64_TPREL16_LO; | |
14497 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14498 | rel->r_offset = offset + d_offset; | |
14499 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14500 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14501 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 14502 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 14503 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 14504 | goto again; |
727fc41e AM |
14505 | } |
14506 | break; | |
14507 | ||
411e1bfb | 14508 | case R_PPC64_DTPMOD64: |
951fd09b AM |
14509 | if (rel + 1 < relend |
14510 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
14511 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 14512 | { |
951fd09b AM |
14513 | if ((tls_mask & TLS_GD) == 0) |
14514 | { | |
14515 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
14516 | if ((tls_mask & TLS_TPRELGD) != 0) | |
14517 | r_type = R_PPC64_TPREL64; | |
14518 | else | |
14519 | { | |
4ce794b7 | 14520 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
14521 | r_type = R_PPC64_NONE; |
14522 | } | |
14523 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14524 | } | |
14525 | } | |
14526 | else | |
14527 | { | |
14528 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 14529 | { |
4ce794b7 | 14530 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 14531 | r_type = R_PPC64_NONE; |
951fd09b | 14532 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 14533 | } |
411e1bfb AM |
14534 | } |
14535 | break; | |
14536 | ||
14537 | case R_PPC64_TPREL64: | |
951fd09b | 14538 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
14539 | { |
14540 | r_type = R_PPC64_NONE; | |
14541 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14542 | } | |
14543 | break; | |
52a82034 | 14544 | |
006589cf AM |
14545 | case R_PPC64_ENTRY: |
14546 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14547 | if (!bfd_link_pic (info) | |
14548 | && !info->traditional_format | |
14549 | && relocation + 0x80008000 <= 0xffffffff) | |
14550 | { | |
14551 | unsigned int insn1, insn2; | |
14552 | ||
14553 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14554 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14555 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14556 | && insn2 == ADD_R2_R2_R12) | |
14557 | { | |
95f0d0d2 | 14558 | bfd_put_32 (input_bfd, |
006589cf AM |
14559 | LIS_R2 + PPC_HA (relocation), |
14560 | contents + rel->r_offset); | |
95f0d0d2 | 14561 | bfd_put_32 (input_bfd, |
006589cf AM |
14562 | ADDI_R2_R2 + PPC_LO (relocation), |
14563 | contents + rel->r_offset + 4); | |
14564 | } | |
14565 | } | |
14566 | else | |
14567 | { | |
14568 | relocation -= (rel->r_offset | |
14569 | + input_section->output_offset | |
14570 | + input_section->output_section->vma); | |
14571 | if (relocation + 0x80008000 <= 0xffffffff) | |
14572 | { | |
14573 | unsigned int insn1, insn2; | |
14574 | ||
14575 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14576 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14577 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14578 | && insn2 == ADD_R2_R2_R12) | |
14579 | { | |
95f0d0d2 | 14580 | bfd_put_32 (input_bfd, |
006589cf AM |
14581 | ADDIS_R2_R12 + PPC_HA (relocation), |
14582 | contents + rel->r_offset); | |
95f0d0d2 | 14583 | bfd_put_32 (input_bfd, |
006589cf AM |
14584 | ADDI_R2_R2 + PPC_LO (relocation), |
14585 | contents + rel->r_offset + 4); | |
14586 | } | |
14587 | } | |
14588 | } | |
14589 | break; | |
14590 | ||
52a82034 AM |
14591 | case R_PPC64_REL16_HA: |
14592 | /* If we are generating a non-PIC executable, edit | |
14593 | . 0: addis 2,12,.TOC.-0b@ha | |
14594 | . addi 2,2,.TOC.-0b@l | |
14595 | used by ELFv2 global entry points to set up r2, to | |
14596 | . lis 2,.TOC.@ha | |
14597 | . addi 2,2,.TOC.@l | |
14598 | if .TOC. is in range. */ | |
0e1862bb | 14599 | if (!bfd_link_pic (info) |
810d4e75 | 14600 | && !info->traditional_format |
006589cf | 14601 | && !htab->opd_abi |
4f038ee5 | 14602 | && rel->r_addend == d_offset |
52a82034 AM |
14603 | && h != NULL && &h->elf == htab->elf.hgot |
14604 | && rel + 1 < relend | |
14605 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14606 | && rel[1].r_offset == rel->r_offset + 4 | |
14607 | && rel[1].r_addend == rel->r_addend + 4 | |
14608 | && relocation + 0x80008000 <= 0xffffffff) | |
14609 | { | |
14610 | unsigned int insn1, insn2; | |
14611 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
14612 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14613 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14614 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14615 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14616 | { |
14617 | r_type = R_PPC64_ADDR16_HA; | |
14618 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14619 | rel->r_addend -= d_offset; | |
14620 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14621 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14622 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14623 | } |
14624 | } | |
14625 | break; | |
411e1bfb AM |
14626 | } |
14627 | ||
14628 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14629 | insn = 0; |
b25116a9 AM |
14630 | max_br_offset = 1 << 25; |
14631 | addend = rel->r_addend; | |
bc30df16 | 14632 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14633 | switch (r_type) |
5bd4f169 AM |
14634 | { |
14635 | default: | |
65f38f15 | 14636 | break; |
5bd4f169 | 14637 | |
3b421ab3 AM |
14638 | case R_PPC64_TOCSAVE: |
14639 | if (relocation + addend == (rel->r_offset | |
14640 | + input_section->output_offset | |
14641 | + input_section->output_section->vma) | |
14642 | && tocsave_find (htab, NO_INSERT, | |
14643 | &local_syms, rel, input_bfd)) | |
14644 | { | |
14645 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14646 | if (insn == NOP | |
14647 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14648 | bfd_put_32 (input_bfd, |
14649 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14650 | contents + rel->r_offset); |
14651 | } | |
14652 | break; | |
14653 | ||
65f38f15 AM |
14654 | /* Branch taken prediction relocations. */ |
14655 | case R_PPC64_ADDR14_BRTAKEN: | |
14656 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14657 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14658 | /* Fall through. */ |
65f38f15 | 14659 | |
86c76c7b | 14660 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14661 | case R_PPC64_ADDR14_BRNTAKEN: |
14662 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14663 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14664 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14665 | /* Fall through. */ |
86c76c7b | 14666 | |
b25116a9 AM |
14667 | case R_PPC64_REL14: |
14668 | max_br_offset = 1 << 15; | |
1a0670f3 | 14669 | /* Fall through. */ |
5bd4f169 | 14670 | |
65f38f15 | 14671 | case R_PPC64_REL24: |
23cedd1d | 14672 | case R_PPC64_PLTCALL: |
ad8e1ba5 AM |
14673 | /* Calls to functions with a different TOC, such as calls to |
14674 | shared objects, need to alter the TOC pointer. This is | |
14675 | done using a linkage stub. A REL24 branching to these | |
14676 | linkage stubs needs to be followed by a nop, as the nop | |
14677 | will be replaced with an instruction to restore the TOC | |
14678 | base pointer. */ | |
8387904d | 14679 | fdh = h; |
b31867b6 AM |
14680 | if (h != NULL |
14681 | && h->oh != NULL | |
14682 | && h->oh->is_func_descriptor) | |
14683 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14684 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14685 | htab); | |
23cedd1d AM |
14686 | if (r_type == R_PPC64_PLTCALL |
14687 | && stub_entry != NULL | |
14688 | && (stub_entry->stub_type == ppc_stub_plt_call | |
14689 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
14690 | stub_entry = NULL; | |
14691 | ||
6abec6bc | 14692 | if (stub_entry != NULL |
ad8e1ba5 | 14693 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 14694 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
14695 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
14696 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 14697 | { |
b25116a9 | 14698 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14699 | |
6e1816be AM |
14700 | if (stub_entry->stub_type == ppc_stub_plt_call |
14701 | && !htab->opd_abi | |
14702 | && htab->params->plt_localentry0 != 0 | |
14703 | && is_elfv2_localentry0 (&h->elf)) | |
14704 | { | |
14705 | /* The function doesn't use or change r2. */ | |
14706 | can_plt_call = TRUE; | |
14707 | } | |
14708 | ||
f378ab09 | 14709 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14710 | branch and link followed by a nop. The nop is |
14711 | replaced by an insn to restore r2. */ | |
6e1816be | 14712 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14713 | { |
ba8ca3e7 AM |
14714 | unsigned long br; |
14715 | ||
14716 | br = bfd_get_32 (input_bfd, | |
14717 | contents + rel->r_offset); | |
14718 | if ((br & 1) != 0) | |
41bd81ab | 14719 | { |
ba8ca3e7 AM |
14720 | unsigned long nop; |
14721 | ||
14722 | nop = bfd_get_32 (input_bfd, | |
14723 | contents + rel->r_offset + 4); | |
23cedd1d AM |
14724 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
14725 | can_plt_call = TRUE; | |
14726 | else if (nop == NOP | |
14727 | || nop == CROR_151515 | |
14728 | || nop == CROR_313131) | |
a7f2871e | 14729 | { |
ba8ca3e7 AM |
14730 | if (h != NULL |
14731 | && (h == htab->tls_get_addr_fd | |
14732 | || h == htab->tls_get_addr) | |
7c9cf415 | 14733 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14734 | { |
14735 | /* Special stub used, leave nop alone. */ | |
14736 | } | |
14737 | else | |
a078d95a AM |
14738 | bfd_put_32 (input_bfd, |
14739 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14740 | contents + rel->r_offset + 4); |
14741 | can_plt_call = TRUE; | |
a7f2871e | 14742 | } |
41bd81ab | 14743 | } |
5bd4f169 | 14744 | } |
721956f4 | 14745 | |
ba8ca3e7 | 14746 | if (!can_plt_call && h != NULL) |
721956f4 | 14747 | { |
ba8ca3e7 AM |
14748 | const char *name = h->elf.root.root.string; |
14749 | ||
14750 | if (*name == '.') | |
14751 | ++name; | |
14752 | ||
14753 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14754 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14755 | { |
ba8ca3e7 AM |
14756 | /* Allow crt1 branch to go via a toc adjusting |
14757 | stub. Other calls that never return could do | |
14758 | the same, if we could detect such. */ | |
b25116a9 | 14759 | can_plt_call = TRUE; |
6ab189d5 | 14760 | } |
ba8ca3e7 AM |
14761 | } |
14762 | ||
14763 | if (!can_plt_call) | |
14764 | { | |
14765 | /* g++ as of 20130507 emits self-calls without a | |
14766 | following nop. This is arguably wrong since we | |
14767 | have conflicting information. On the one hand a | |
14768 | global symbol and on the other a local call | |
14769 | sequence, but don't error for this special case. | |
14770 | It isn't possible to cheaply verify we have | |
14771 | exactly such a call. Allow all calls to the same | |
14772 | section. */ | |
14773 | asection *code_sec = sec; | |
14774 | ||
14775 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14776 | { |
ba8ca3e7 AM |
14777 | bfd_vma off = (relocation + addend |
14778 | - sec->output_section->vma | |
14779 | - sec->output_offset); | |
bc30df16 | 14780 | |
ba8ca3e7 | 14781 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14782 | } |
ba8ca3e7 AM |
14783 | if (code_sec == input_section) |
14784 | can_plt_call = TRUE; | |
14785 | } | |
14786 | ||
14787 | if (!can_plt_call) | |
14788 | { | |
4805fc55 AM |
14789 | if (stub_entry->stub_type == ppc_stub_plt_call |
14790 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14791 | info->callbacks->einfo | |
695344c0 | 14792 | /* xgettext:c-format */ |
c1c8c1ef | 14793 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14794 | "recompile with -fPIC\n"), |
14795 | input_bfd, input_section, rel->r_offset, sym_name); | |
14796 | else | |
14797 | info->callbacks->einfo | |
695344c0 | 14798 | /* xgettext:c-format */ |
c1c8c1ef | 14799 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14800 | "(-mcmodel=small toc adjust stub)\n"), |
14801 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14802 | |
14803 | bfd_set_error (bfd_error_bad_value); | |
14804 | ret = FALSE; | |
721956f4 AM |
14805 | } |
14806 | ||
b25116a9 | 14807 | if (can_plt_call |
794e51c0 AM |
14808 | && (stub_entry->stub_type == ppc_stub_plt_call |
14809 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
14810 | unresolved_reloc = FALSE; |
14811 | } | |
14812 | ||
6abec6bc AM |
14813 | if ((stub_entry == NULL |
14814 | || stub_entry->stub_type == ppc_stub_long_branch | |
14815 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14816 | && get_opd_info (sec) != NULL) |
14817 | { | |
14818 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14819 | bfd_vma off = (relocation + addend |
14820 | - sec->output_section->vma | |
14821 | - sec->output_offset); | |
aef36ac1 | 14822 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14823 | if (dest != (bfd_vma) -1) |
14824 | { | |
14825 | relocation = dest; | |
14826 | addend = 0; | |
bc30df16 | 14827 | reloc_dest = DEST_OPD; |
8387904d AM |
14828 | } |
14829 | } | |
14830 | ||
b25116a9 AM |
14831 | /* If the branch is out of reach we ought to have a long |
14832 | branch stub. */ | |
14833 | from = (rel->r_offset | |
14834 | + input_section->output_offset | |
14835 | + input_section->output_section->vma); | |
14836 | ||
6911b7dc AM |
14837 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14838 | ? fdh->elf.other | |
14839 | : sym->st_other); | |
14840 | ||
6abec6bc AM |
14841 | if (stub_entry != NULL |
14842 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14843 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14844 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14845 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14846 | || (relocation + addend - from + max_br_offset | |
14847 | < 2 * max_br_offset))) | |
14848 | /* Don't use the stub if this branch is in range. */ | |
14849 | stub_entry = NULL; | |
b25116a9 AM |
14850 | |
14851 | if (stub_entry != NULL) | |
14852 | { | |
14853 | /* Munge up the value and addend so that we call the stub | |
14854 | rather than the procedure directly. */ | |
a4b6fadd AM |
14855 | asection *stub_sec = stub_entry->group->stub_sec; |
14856 | ||
14857 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14858 | relocation += (stub_sec->output_offset | |
14859 | + stub_sec->output_section->vma | |
14860 | + stub_sec->size - htab->sfpr->size | |
14861 | - htab->sfpr->output_offset | |
14862 | - htab->sfpr->output_section->vma); | |
14863 | else | |
14864 | relocation = (stub_entry->stub_offset | |
14865 | + stub_sec->output_offset | |
14866 | + stub_sec->output_section->vma); | |
b25116a9 | 14867 | addend = 0; |
bc30df16 | 14868 | reloc_dest = DEST_STUB; |
3b421ab3 | 14869 | |
954b63d4 | 14870 | if ((stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 AM |
14871 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) |
14872 | && (ALWAYS_EMIT_R2SAVE | |
14873 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14874 | && rel + 1 < relend |
14875 | && rel[1].r_offset == rel->r_offset + 4 | |
14876 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14877 | relocation += 4; | |
b25116a9 AM |
14878 | } |
14879 | ||
14880 | if (insn != 0) | |
14881 | { | |
794e51c0 | 14882 | if (is_isa_v2) |
721956f4 | 14883 | { |
b25116a9 AM |
14884 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14885 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14886 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14887 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14888 | insn |= 0x02 << 21; | |
14889 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14890 | insn |= 0x08 << 21; | |
14891 | else | |
14892 | break; | |
14893 | } | |
14894 | else | |
14895 | { | |
14896 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14897 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14898 | insn ^= 0x01 << 21; |
721956f4 | 14899 | } |
b25116a9 | 14900 | |
95f0d0d2 | 14901 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14902 | } |
e86ce104 | 14903 | |
06da1e8e AM |
14904 | /* NOP out calls to undefined weak functions. |
14905 | We can thus call a weak function without first | |
14906 | checking whether the function is defined. */ | |
b25116a9 | 14907 | else if (h != NULL |
039b3fef | 14908 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14909 | && h->elf.dynindx == -1 |
b25116a9 AM |
14910 | && r_type == R_PPC64_REL24 |
14911 | && relocation == 0 | |
4cc603a5 | 14912 | && addend == 0) |
e86ce104 | 14913 | { |
95f0d0d2 | 14914 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14915 | goto copy_reloc; |
e86ce104 | 14916 | } |
65f38f15 AM |
14917 | break; |
14918 | } | |
5bd4f169 | 14919 | |
65f38f15 | 14920 | /* Set `addend'. */ |
411e1bfb | 14921 | tls_type = 0; |
23cedd1d | 14922 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
14923 | switch (r_type) |
14924 | { | |
14925 | default: | |
cf97bcb0 AM |
14926 | /* xgettext:c-format */ |
14927 | _bfd_error_handler (_("%pB: %s unsupported"), | |
14928 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 14929 | |
65f38f15 | 14930 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14931 | ret = FALSE; |
c316a17c | 14932 | goto copy_reloc; |
5bd4f169 | 14933 | |
65f38f15 | 14934 | case R_PPC64_NONE: |
411e1bfb | 14935 | case R_PPC64_TLS: |
727fc41e AM |
14936 | case R_PPC64_TLSGD: |
14937 | case R_PPC64_TLSLD: | |
3b421ab3 | 14938 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14939 | case R_PPC64_GNU_VTINHERIT: |
14940 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14941 | case R_PPC64_ENTRY: |
c316a17c | 14942 | goto copy_reloc; |
5bd4f169 AM |
14943 | |
14944 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14945 | address in the GOT as relocation value instead of the | |
411e1bfb | 14946 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14947 | symbol and put the symbol value there. */ |
411e1bfb AM |
14948 | case R_PPC64_GOT_TLSGD16: |
14949 | case R_PPC64_GOT_TLSGD16_LO: | |
14950 | case R_PPC64_GOT_TLSGD16_HI: | |
14951 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14952 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14953 | goto dogot; |
14954 | ||
14955 | case R_PPC64_GOT_TLSLD16: | |
14956 | case R_PPC64_GOT_TLSLD16_LO: | |
14957 | case R_PPC64_GOT_TLSLD16_HI: | |
14958 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14959 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14960 | goto dogot; |
14961 | ||
14962 | case R_PPC64_GOT_TPREL16_DS: | |
14963 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14964 | case R_PPC64_GOT_TPREL16_HI: | |
14965 | case R_PPC64_GOT_TPREL16_HA: | |
14966 | tls_type = TLS_TLS | TLS_TPREL; | |
14967 | goto dogot; | |
14968 | ||
14969 | case R_PPC64_GOT_DTPREL16_DS: | |
14970 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14971 | case R_PPC64_GOT_DTPREL16_HI: | |
14972 | case R_PPC64_GOT_DTPREL16_HA: | |
14973 | tls_type = TLS_TLS | TLS_DTPREL; | |
14974 | goto dogot; | |
14975 | ||
65f38f15 AM |
14976 | case R_PPC64_GOT16: |
14977 | case R_PPC64_GOT16_LO: | |
14978 | case R_PPC64_GOT16_HI: | |
14979 | case R_PPC64_GOT16_HA: | |
14980 | case R_PPC64_GOT16_DS: | |
14981 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14982 | dogot: |
5bd4f169 AM |
14983 | { |
14984 | /* Relocation is to the entry for this symbol in the global | |
14985 | offset table. */ | |
e717da7e | 14986 | asection *got; |
d881513a | 14987 | bfd_vma *offp; |
5bd4f169 | 14988 | bfd_vma off; |
d881513a | 14989 | unsigned long indx = 0; |
927be08e | 14990 | struct got_entry *ent; |
65f38f15 | 14991 | |
d881513a AM |
14992 | if (tls_type == (TLS_TLS | TLS_LD) |
14993 | && (h == NULL | |
f5385ebf | 14994 | || !h->elf.def_dynamic)) |
927be08e | 14995 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14996 | else |
5bd4f169 | 14997 | { |
d881513a AM |
14998 | if (h != NULL) |
14999 | { | |
f0158f44 AM |
15000 | if (!htab->elf.dynamic_sections_created |
15001 | || h->elf.dynindx == -1 | |
15002 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 15003 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
15004 | /* This is actually a static link, or it is a |
15005 | -Bsymbolic link and the symbol is defined | |
15006 | locally, or the symbol was forced to be local | |
15007 | because of a version file. */ | |
15008 | ; | |
15009 | else | |
15010 | { | |
039b3fef | 15011 | indx = h->elf.dynindx; |
d881513a AM |
15012 | unresolved_reloc = FALSE; |
15013 | } | |
039b3fef | 15014 | ent = h->elf.got.glist; |
d881513a | 15015 | } |
411e1bfb | 15016 | else |
5bd4f169 | 15017 | { |
d881513a AM |
15018 | if (local_got_ents == NULL) |
15019 | abort (); | |
15020 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15021 | } |
d881513a AM |
15022 | |
15023 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 15024 | if (ent->addend == orig_rel.r_addend |
e717da7e | 15025 | && ent->owner == input_bfd |
d881513a AM |
15026 | && ent->tls_type == tls_type) |
15027 | break; | |
5bd4f169 | 15028 | } |
411e1bfb | 15029 | |
927be08e AM |
15030 | if (ent == NULL) |
15031 | abort (); | |
15032 | if (ent->is_indirect) | |
15033 | ent = ent->got.ent; | |
15034 | offp = &ent->got.offset; | |
15035 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15036 | if (got == NULL) |
15037 | abort (); | |
15038 | ||
411e1bfb AM |
15039 | /* The offset must always be a multiple of 8. We use the |
15040 | least significant bit to record whether we have already | |
15041 | processed this entry. */ | |
d881513a | 15042 | off = *offp; |
411e1bfb AM |
15043 | if ((off & 1) != 0) |
15044 | off &= ~1; | |
5bd4f169 AM |
15045 | else |
15046 | { | |
411e1bfb AM |
15047 | /* Generate relocs for the dynamic linker, except in |
15048 | the case of TLSLD where we'll use one entry per | |
15049 | module. */ | |
25f23106 AM |
15050 | asection *relgot; |
15051 | bfd_boolean ifunc; | |
e717da7e | 15052 | |
d881513a | 15053 | *offp = off | 1; |
25f23106 AM |
15054 | relgot = NULL; |
15055 | ifunc = (h != NULL | |
15056 | ? h->elf.type == STT_GNU_IFUNC | |
15057 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15058 | if (ifunc) |
82e66161 AM |
15059 | { |
15060 | relgot = htab->elf.irelplt; | |
15061 | if (indx == 0) | |
15062 | htab->local_ifunc_resolver = 1; | |
15063 | else if (is_static_defined (&h->elf)) | |
15064 | htab->maybe_local_ifunc_resolver = 1; | |
15065 | } | |
f0158f44 AM |
15066 | else if (indx != 0 |
15067 | || (bfd_link_pic (info) | |
15068 | && (h == NULL | |
21d68fcd | 15069 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 15070 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
15071 | && !h->elf.def_dynamic)) |
15072 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
15073 | && bfd_link_executable (info) | |
15074 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15075 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15076 | if (relgot != NULL) |
5bd4f169 | 15077 | { |
e717da7e AM |
15078 | outrel.r_offset = (got->output_section->vma |
15079 | + got->output_offset | |
411e1bfb | 15080 | + off); |
4cc603a5 | 15081 | outrel.r_addend = addend; |
d881513a | 15082 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15083 | { |
411e1bfb | 15084 | outrel.r_addend = 0; |
e515b051 | 15085 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15086 | if (tls_type == (TLS_TLS | TLS_GD)) |
15087 | { | |
e717da7e AM |
15088 | loc = relgot->contents; |
15089 | loc += (relgot->reloc_count++ | |
d881513a AM |
15090 | * sizeof (Elf64_External_Rela)); |
15091 | bfd_elf64_swap_reloca_out (output_bfd, | |
15092 | &outrel, loc); | |
e515b051 | 15093 | outrel.r_offset += 8; |
4cc603a5 | 15094 | outrel.r_addend = addend; |
d881513a AM |
15095 | outrel.r_info |
15096 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15097 | } |
411e1bfb | 15098 | } |
951fd09b | 15099 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15100 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15101 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15102 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15103 | else if (indx != 0) |
15104 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15105 | else | |
81407a69 | 15106 | { |
25f23106 AM |
15107 | if (ifunc) |
15108 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15109 | else | |
15110 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15111 | |
15112 | /* Write the .got section contents for the sake | |
15113 | of prelink. */ | |
e717da7e | 15114 | loc = got->contents + off; |
23fbd6fa JJ |
15115 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15116 | loc); | |
81407a69 | 15117 | } |
81407a69 AM |
15118 | |
15119 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15120 | { |
15121 | outrel.r_addend += relocation; | |
15122 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15123 | { |
15124 | if (htab->elf.tls_sec == NULL) | |
15125 | outrel.r_addend = 0; | |
15126 | else | |
15127 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15128 | } | |
e515b051 | 15129 | } |
e717da7e AM |
15130 | loc = relgot->contents; |
15131 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15132 | * sizeof (Elf64_External_Rela)); |
15133 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15134 | } | |
15135 | ||
ad8e1ba5 | 15136 | /* Init the .got section contents here if we're not |
81407a69 | 15137 | emitting a reloc. */ |
d881513a | 15138 | else |
411e1bfb | 15139 | { |
4cc603a5 | 15140 | relocation += addend; |
f0158f44 | 15141 | if (tls_type != 0) |
411e1bfb | 15142 | { |
989f9879 AM |
15143 | if (htab->elf.tls_sec == NULL) |
15144 | relocation = 0; | |
15145 | else | |
15146 | { | |
f0158f44 AM |
15147 | if (tls_type & TLS_LD) |
15148 | relocation = 0; | |
15149 | else | |
15150 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15151 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15152 | relocation += DTP_OFFSET - TP_OFFSET; |
15153 | } | |
5bd4f169 | 15154 | |
f0158f44 | 15155 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15156 | { |
15157 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15158 | got->contents + off + 8); |
676ee2b5 | 15159 | relocation = 1; |
7b609f53 | 15160 | } |
411e1bfb AM |
15161 | } |
15162 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15163 | got->contents + off); |
5bd4f169 AM |
15164 | } |
15165 | } | |
15166 | ||
65f38f15 AM |
15167 | if (off >= (bfd_vma) -2) |
15168 | abort (); | |
15169 | ||
bf102f86 | 15170 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 15171 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 15172 | } |
65f38f15 AM |
15173 | break; |
15174 | ||
15175 | case R_PPC64_PLT16_HA: | |
15176 | case R_PPC64_PLT16_HI: | |
15177 | case R_PPC64_PLT16_LO: | |
08be3224 | 15178 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
15179 | case R_PPC64_PLT32: |
15180 | case R_PPC64_PLT64: | |
23cedd1d AM |
15181 | case R_PPC64_PLTSEQ: |
15182 | case R_PPC64_PLTCALL: | |
65f38f15 AM |
15183 | /* Relocation is to the entry for this symbol in the |
15184 | procedure linkage table. */ | |
23cedd1d | 15185 | unresolved_reloc = TRUE; |
cbf95972 AM |
15186 | { |
15187 | struct plt_entry **plt_list = NULL; | |
15188 | if (h != NULL) | |
15189 | plt_list = &h->elf.plt.plist; | |
15190 | else if (local_got_ents != NULL) | |
15191 | { | |
15192 | struct plt_entry **local_plt = (struct plt_entry **) | |
15193 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15194 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15195 | } |
15196 | if (plt_list) | |
15197 | { | |
15198 | struct plt_entry *ent; | |
65f38f15 | 15199 | |
cbf95972 AM |
15200 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15201 | if (ent->plt.offset != (bfd_vma) -1 | |
15202 | && ent->addend == orig_rel.r_addend) | |
15203 | { | |
15204 | asection *plt; | |
08be3224 | 15205 | bfd_vma got; |
cbf95972 AM |
15206 | |
15207 | plt = htab->elf.splt; | |
15208 | if (!htab->elf.dynamic_sections_created | |
15209 | || h == NULL | |
15210 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15211 | { |
15212 | if (h != NULL | |
15213 | ? h->elf.type == STT_GNU_IFUNC | |
15214 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15215 | plt = htab->elf.iplt; | |
15216 | else | |
15217 | plt = htab->pltlocal; | |
15218 | } | |
15219 | relocation = (plt->output_section->vma | |
15220 | + plt->output_offset | |
15221 | + ent->plt.offset); | |
08be3224 AM |
15222 | if (r_type == R_PPC64_PLT16_HA |
15223 | || r_type ==R_PPC64_PLT16_HI | |
15224 | || r_type ==R_PPC64_PLT16_LO | |
15225 | || r_type ==R_PPC64_PLT16_LO_DS) | |
15226 | { | |
15227 | got = (elf_gp (output_bfd) | |
15228 | + htab->sec_info[input_section->id].toc_off); | |
15229 | relocation -= got; | |
15230 | } | |
cbf95972 AM |
15231 | addend = 0; |
15232 | unresolved_reloc = FALSE; | |
15233 | break; | |
15234 | } | |
15235 | } | |
15236 | } | |
65f38f15 | 15237 | break; |
5bd4f169 | 15238 | |
0b13192e AM |
15239 | case R_PPC64_TOC: |
15240 | /* Relocation value is TOC base. */ | |
15241 | relocation = TOCstart; | |
cf35638d | 15242 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15243 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15244 | else if (unresolved_reloc) |
15245 | ; | |
6f20ed8a AM |
15246 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15247 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15248 | else |
15249 | unresolved_reloc = TRUE; | |
ab96bf03 | 15250 | goto dodyn; |
0b13192e | 15251 | |
5bd4f169 AM |
15252 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15253 | which is the address of the start of the TOC plus 0x8000. | |
15254 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15255 | in this order. */ | |
65f38f15 AM |
15256 | case R_PPC64_TOC16: |
15257 | case R_PPC64_TOC16_LO: | |
15258 | case R_PPC64_TOC16_HI: | |
15259 | case R_PPC64_TOC16_DS: | |
15260 | case R_PPC64_TOC16_LO_DS: | |
15261 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15262 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
15263 | break; |
15264 | ||
15265 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15266 | case R_PPC64_SECTOFF: |
15267 | case R_PPC64_SECTOFF_LO: | |
15268 | case R_PPC64_SECTOFF_HI: | |
15269 | case R_PPC64_SECTOFF_DS: | |
15270 | case R_PPC64_SECTOFF_LO_DS: | |
15271 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15272 | if (sec != NULL) |
65f38f15 | 15273 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15274 | break; |
15275 | ||
25f23106 AM |
15276 | case R_PPC64_REL16: |
15277 | case R_PPC64_REL16_LO: | |
15278 | case R_PPC64_REL16_HI: | |
15279 | case R_PPC64_REL16_HA: | |
a680de9a | 15280 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
15281 | break; |
15282 | ||
721956f4 AM |
15283 | case R_PPC64_REL14: |
15284 | case R_PPC64_REL14_BRNTAKEN: | |
15285 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
15286 | case R_PPC64_REL24: |
15287 | break; | |
15288 | ||
411e1bfb AM |
15289 | case R_PPC64_TPREL16: |
15290 | case R_PPC64_TPREL16_LO: | |
15291 | case R_PPC64_TPREL16_HI: | |
15292 | case R_PPC64_TPREL16_HA: | |
15293 | case R_PPC64_TPREL16_DS: | |
15294 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15295 | case R_PPC64_TPREL16_HIGH: |
15296 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15297 | case R_PPC64_TPREL16_HIGHER: |
15298 | case R_PPC64_TPREL16_HIGHERA: | |
15299 | case R_PPC64_TPREL16_HIGHEST: | |
15300 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
15301 | if (h != NULL |
15302 | && h->elf.root.type == bfd_link_hash_undefweak | |
15303 | && h->elf.dynindx == -1) | |
15304 | { | |
15305 | /* Make this relocation against an undefined weak symbol | |
15306 | resolve to zero. This is really just a tweak, since | |
15307 | code using weak externs ought to check that they are | |
15308 | defined before using them. */ | |
15309 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15310 | ||
95f0d0d2 | 15311 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15312 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15313 | if (insn != 0) | |
95f0d0d2 | 15314 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15315 | break; |
15316 | } | |
989f9879 AM |
15317 | if (htab->elf.tls_sec != NULL) |
15318 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15319 | /* The TPREL16 relocs shouldn't really be used in shared |
15320 | libs or with non-local symbols as that will result in | |
15321 | DT_TEXTREL being set, but support them anyway. */ | |
15322 | goto dodyn; | |
411e1bfb AM |
15323 | |
15324 | case R_PPC64_DTPREL16: | |
15325 | case R_PPC64_DTPREL16_LO: | |
15326 | case R_PPC64_DTPREL16_HI: | |
15327 | case R_PPC64_DTPREL16_HA: | |
15328 | case R_PPC64_DTPREL16_DS: | |
15329 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15330 | case R_PPC64_DTPREL16_HIGH: |
15331 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15332 | case R_PPC64_DTPREL16_HIGHER: |
15333 | case R_PPC64_DTPREL16_HIGHERA: | |
15334 | case R_PPC64_DTPREL16_HIGHEST: | |
15335 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
15336 | if (htab->elf.tls_sec != NULL) |
15337 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
15338 | break; |
15339 | ||
45965137 AM |
15340 | case R_PPC64_ADDR64_LOCAL: |
15341 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
15342 | ? h->elf.other | |
15343 | : sym->st_other); | |
15344 | break; | |
15345 | ||
e515b051 AM |
15346 | case R_PPC64_DTPMOD64: |
15347 | relocation = 1; | |
15348 | addend = 0; | |
15349 | goto dodyn; | |
15350 | ||
411e1bfb | 15351 | case R_PPC64_TPREL64: |
989f9879 AM |
15352 | if (htab->elf.tls_sec != NULL) |
15353 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
15354 | goto dodyn; |
15355 | ||
15356 | case R_PPC64_DTPREL64: | |
989f9879 AM |
15357 | if (htab->elf.tls_sec != NULL) |
15358 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 15359 | /* Fall through. */ |
411e1bfb | 15360 | |
65f38f15 AM |
15361 | /* Relocations that may need to be propagated if this is a |
15362 | dynamic object. */ | |
04c9666a | 15363 | case R_PPC64_REL30: |
65f38f15 AM |
15364 | case R_PPC64_REL32: |
15365 | case R_PPC64_REL64: | |
15366 | case R_PPC64_ADDR14: | |
15367 | case R_PPC64_ADDR14_BRNTAKEN: | |
15368 | case R_PPC64_ADDR14_BRTAKEN: | |
15369 | case R_PPC64_ADDR16: | |
15370 | case R_PPC64_ADDR16_DS: | |
15371 | case R_PPC64_ADDR16_HA: | |
15372 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
15373 | case R_PPC64_ADDR16_HIGH: |
15374 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15375 | case R_PPC64_ADDR16_HIGHER: |
15376 | case R_PPC64_ADDR16_HIGHERA: | |
15377 | case R_PPC64_ADDR16_HIGHEST: | |
15378 | case R_PPC64_ADDR16_HIGHESTA: | |
15379 | case R_PPC64_ADDR16_LO: | |
15380 | case R_PPC64_ADDR16_LO_DS: | |
15381 | case R_PPC64_ADDR24: | |
65f38f15 AM |
15382 | case R_PPC64_ADDR32: |
15383 | case R_PPC64_ADDR64: | |
15384 | case R_PPC64_UADDR16: | |
15385 | case R_PPC64_UADDR32: | |
15386 | case R_PPC64_UADDR64: | |
411e1bfb | 15387 | dodyn: |
5d1634d7 | 15388 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
15389 | break; |
15390 | ||
41bd81ab AM |
15391 | if (NO_OPD_RELOCS && is_opd) |
15392 | break; | |
15393 | ||
8a9e8e72 | 15394 | if (bfd_link_pic (info) |
b1b07054 AM |
15395 | ? ((h == NULL |
15396 | || h->dyn_relocs != NULL) | |
15397 | && ((h != NULL && pc_dynrelocs (h)) | |
15398 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
15399 | : (h != NULL |
15400 | ? h->dyn_relocs != NULL | |
d311bc8b | 15401 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 15402 | { |
b34976b6 | 15403 | bfd_boolean skip, relocate; |
65f38f15 | 15404 | asection *sreloc; |
1cf1f670 | 15405 | bfd_vma out_off; |
82e66161 | 15406 | long indx = 0; |
65f38f15 AM |
15407 | |
15408 | /* When generating a dynamic object, these relocations | |
15409 | are copied into the output file to be resolved at run | |
15410 | time. */ | |
15411 | ||
b34976b6 AM |
15412 | skip = FALSE; |
15413 | relocate = FALSE; | |
65f38f15 | 15414 | |
1cf1f670 AM |
15415 | out_off = _bfd_elf_section_offset (output_bfd, info, |
15416 | input_section, rel->r_offset); | |
15417 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 15418 | skip = TRUE; |
1cf1f670 | 15419 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 15420 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
15421 | out_off += (input_section->output_section->vma |
15422 | + input_section->output_offset); | |
15423 | outrel.r_offset = out_off; | |
411e1bfb | 15424 | outrel.r_addend = rel->r_addend; |
65f38f15 | 15425 | |
1cf1f670 AM |
15426 | /* Optimize unaligned reloc use. */ |
15427 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
15428 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
15429 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
15430 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
15431 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
15432 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
15433 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
15434 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
15435 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
15436 | ||
65f38f15 | 15437 | if (skip) |
0bb2d96a | 15438 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 15439 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
15440 | && !is_opd |
15441 | && r_type != R_PPC64_TOC) | |
14acf4dc | 15442 | { |
82e66161 AM |
15443 | indx = h->elf.dynindx; |
15444 | BFD_ASSERT (indx != -1); | |
15445 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 15446 | } |
65f38f15 AM |
15447 | else |
15448 | { | |
41bd81ab AM |
15449 | /* This symbol is local, or marked to become local, |
15450 | or this is an opd section reloc which must point | |
15451 | at a local function. */ | |
65f38f15 | 15452 | outrel.r_addend += relocation; |
e86ce104 | 15453 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 15454 | { |
3fad3c7c | 15455 | if (is_opd && h != NULL) |
afbe61cf AM |
15456 | { |
15457 | /* Lie about opd entries. This case occurs | |
15458 | when building shared libraries and we | |
15459 | reference a function in another shared | |
3fad3c7c AM |
15460 | lib. The same thing happens for a weak |
15461 | definition in an application that's | |
15462 | overridden by a strong definition in a | |
15463 | shared lib. (I believe this is a generic | |
15464 | bug in binutils handling of weak syms.) | |
15465 | In these cases we won't use the opd | |
1e2f5b6e | 15466 | entry in this lib. */ |
b34976b6 | 15467 | unresolved_reloc = FALSE; |
afbe61cf | 15468 | } |
25f23106 AM |
15469 | if (!is_opd |
15470 | && r_type == R_PPC64_ADDR64 | |
15471 | && (h != NULL | |
15472 | ? h->elf.type == STT_GNU_IFUNC | |
15473 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
15474 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15475 | else | |
15476 | { | |
15477 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 15478 | |
25f23106 AM |
15479 | /* We need to relocate .opd contents for ld.so. |
15480 | Prelink also wants simple and consistent rules | |
15481 | for relocs. This make all RELATIVE relocs have | |
15482 | *r_offset equal to r_addend. */ | |
15483 | relocate = TRUE; | |
15484 | } | |
65f38f15 AM |
15485 | } |
15486 | else | |
15487 | { | |
25f23106 AM |
15488 | if (h != NULL |
15489 | ? h->elf.type == STT_GNU_IFUNC | |
15490 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15491 | { | |
25f53a85 | 15492 | info->callbacks->einfo |
695344c0 | 15493 | /* xgettext:c-format */ |
174d0a74 | 15494 | (_("%H: %s for indirect " |
c1c8c1ef | 15495 | "function `%pT' unsupported\n"), |
25f53a85 | 15496 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
15497 | ppc64_elf_howto_table[r_type]->name, |
15498 | sym_name); | |
15499 | ret = FALSE; | |
15500 | } | |
cf35638d | 15501 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
15502 | ; |
15503 | else if (sec == NULL || sec->owner == NULL) | |
15504 | { | |
15505 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15506 | return FALSE; |
65f38f15 AM |
15507 | } |
15508 | else | |
15509 | { | |
15510 | asection *osec; | |
15511 | ||
15512 | osec = sec->output_section; | |
15513 | indx = elf_section_data (osec)->dynindx; | |
15514 | ||
74541ad4 AM |
15515 | if (indx == 0) |
15516 | { | |
15517 | if ((osec->flags & SEC_READONLY) == 0 | |
15518 | && htab->elf.data_index_section != NULL) | |
15519 | osec = htab->elf.data_index_section; | |
15520 | else | |
15521 | osec = htab->elf.text_index_section; | |
15522 | indx = elf_section_data (osec)->dynindx; | |
15523 | } | |
15524 | BFD_ASSERT (indx != 0); | |
15525 | ||
65f38f15 AM |
15526 | /* We are turning this relocation into one |
15527 | against a section symbol, so subtract out | |
15528 | the output section's address but not the | |
15529 | offset of the input section in the output | |
15530 | section. */ | |
15531 | outrel.r_addend -= osec->vma; | |
15532 | } | |
15533 | ||
15534 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
15535 | } | |
15536 | } | |
15537 | ||
15538 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
15539 | if (h != NULL |
15540 | ? h->elf.type == STT_GNU_IFUNC | |
15541 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
15542 | { |
15543 | sreloc = htab->elf.irelplt; | |
15544 | if (indx == 0) | |
15545 | htab->local_ifunc_resolver = 1; | |
15546 | else if (is_static_defined (&h->elf)) | |
15547 | htab->maybe_local_ifunc_resolver = 1; | |
15548 | } | |
65f38f15 AM |
15549 | if (sreloc == NULL) |
15550 | abort (); | |
15551 | ||
dfbb6ac9 AM |
15552 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
15553 | >= sreloc->size) | |
15554 | abort (); | |
947216bf AM |
15555 | loc = sreloc->contents; |
15556 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
15557 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
15558 | ||
15559 | /* If this reloc is against an external symbol, it will | |
15560 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15561 | anything now. However, for the sake of prelink ensure |
15562 | that the section contents are a known value. */ | |
65f38f15 | 15563 | if (! relocate) |
81407a69 AM |
15564 | { |
15565 | unresolved_reloc = FALSE; | |
15566 | /* The value chosen here is quite arbitrary as ld.so | |
15567 | ignores section contents except for the special | |
15568 | case of .opd where the contents might be accessed | |
15569 | before relocation. Choose zero, as that won't | |
15570 | cause reloc overflow. */ | |
15571 | relocation = 0; | |
15572 | addend = 0; | |
15573 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15574 | to improve backward compatibility with older | |
15575 | versions of ld. */ | |
15576 | if (r_type == R_PPC64_ADDR64) | |
15577 | addend = outrel.r_addend; | |
15578 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15579 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15580 | addend = outrel.r_offset; |
81407a69 | 15581 | } |
65f38f15 | 15582 | } |
5bd4f169 AM |
15583 | break; |
15584 | ||
65f38f15 AM |
15585 | case R_PPC64_COPY: |
15586 | case R_PPC64_GLOB_DAT: | |
15587 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15588 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15589 | case R_PPC64_RELATIVE: |
15590 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15591 | files. */ | |
ae9a127f | 15592 | /* Fall through. */ |
65f38f15 AM |
15593 | |
15594 | case R_PPC64_PLTGOT16: | |
15595 | case R_PPC64_PLTGOT16_DS: | |
15596 | case R_PPC64_PLTGOT16_HA: | |
15597 | case R_PPC64_PLTGOT16_HI: | |
15598 | case R_PPC64_PLTGOT16_LO: | |
15599 | case R_PPC64_PLTGOT16_LO_DS: | |
15600 | case R_PPC64_PLTREL32: | |
15601 | case R_PPC64_PLTREL64: | |
15602 | /* These ones haven't been implemented yet. */ | |
15603 | ||
25f53a85 | 15604 | info->callbacks->einfo |
695344c0 | 15605 | /* xgettext:c-format */ |
c1c8c1ef | 15606 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15607 | input_bfd, |
4ce794b7 | 15608 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15609 | |
15610 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15611 | ret = FALSE; |
c316a17c | 15612 | goto copy_reloc; |
65f38f15 | 15613 | } |
5bd4f169 | 15614 | |
67f0cbdb AM |
15615 | /* Multi-instruction sequences that access the TOC can be |
15616 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 15617 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
15618 | switch (r_type) |
15619 | { | |
15620 | default: | |
15621 | break; | |
15622 | ||
15623 | case R_PPC64_GOT_TLSLD16_HI: | |
15624 | case R_PPC64_GOT_TLSGD16_HI: | |
15625 | case R_PPC64_GOT_TPREL16_HI: | |
15626 | case R_PPC64_GOT_DTPREL16_HI: | |
15627 | case R_PPC64_GOT16_HI: | |
15628 | case R_PPC64_TOC16_HI: | |
15629 | /* These relocs would only be useful if building up an | |
15630 | offset to later add to r2, perhaps in an indexed | |
15631 | addressing mode instruction. Don't try to optimize. | |
15632 | Unfortunately, the possibility of someone building up an | |
15633 | offset like this or even with the HA relocs, means that | |
15634 | we need to check the high insn when optimizing the low | |
15635 | insn. */ | |
15636 | break; | |
15637 | ||
23cedd1d AM |
15638 | case R_PPC64_PLTCALL: |
15639 | if (unresolved_reloc) | |
15640 | { | |
15641 | /* No plt entry. Make this into a direct call. */ | |
15642 | bfd_byte *p = contents + rel->r_offset; | |
15643 | insn = bfd_get_32 (input_bfd, p); | |
15644 | insn &= 1; | |
15645 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
15646 | bfd_put_32 (input_bfd, NOP, p + 4); | |
15647 | unresolved_reloc = save_unresolved_reloc; | |
15648 | r_type = R_PPC64_REL24; | |
15649 | } | |
15650 | break; | |
15651 | ||
15652 | case R_PPC64_PLTSEQ: | |
15653 | if (unresolved_reloc) | |
15654 | { | |
15655 | unresolved_reloc = FALSE; | |
15656 | goto nop_it; | |
15657 | } | |
15658 | break; | |
15659 | ||
15660 | case R_PPC64_PLT16_HA: | |
15661 | if (unresolved_reloc) | |
15662 | { | |
15663 | unresolved_reloc = FALSE; | |
15664 | goto nop_it; | |
15665 | } | |
15666 | /* Fall through. */ | |
67f0cbdb AM |
15667 | case R_PPC64_GOT_TLSLD16_HA: |
15668 | case R_PPC64_GOT_TLSGD16_HA: | |
15669 | case R_PPC64_GOT_TPREL16_HA: | |
15670 | case R_PPC64_GOT_DTPREL16_HA: | |
15671 | case R_PPC64_GOT16_HA: | |
15672 | case R_PPC64_TOC16_HA: | |
98528052 | 15673 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15674 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 15675 | { |
23cedd1d AM |
15676 | bfd_byte *p; |
15677 | nop_it: | |
15678 | p = contents + (rel->r_offset & ~3); | |
98528052 | 15679 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 15680 | goto copy_reloc; |
98528052 | 15681 | } |
67f0cbdb AM |
15682 | break; |
15683 | ||
23cedd1d AM |
15684 | case R_PPC64_PLT16_LO: |
15685 | case R_PPC64_PLT16_LO_DS: | |
15686 | if (unresolved_reloc) | |
15687 | { | |
15688 | unresolved_reloc = FALSE; | |
15689 | goto nop_it; | |
15690 | } | |
15691 | /* Fall through. */ | |
67f0cbdb AM |
15692 | case R_PPC64_GOT_TLSLD16_LO: |
15693 | case R_PPC64_GOT_TLSGD16_LO: | |
15694 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15695 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15696 | case R_PPC64_GOT16_LO: | |
15697 | case R_PPC64_GOT16_LO_DS: | |
15698 | case R_PPC64_TOC16_LO: | |
15699 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15700 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15701 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15702 | { |
15703 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15704 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15705 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15706 | { | |
15707 | /* Transform addic to addi when we change reg. */ | |
15708 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15709 | insn |= (14u << 26) | (2 << 16); | |
15710 | } | |
15711 | else | |
67f0cbdb | 15712 | { |
98528052 AM |
15713 | insn &= ~(0x1f << 16); |
15714 | insn |= 2 << 16; | |
67f0cbdb | 15715 | } |
560c8763 | 15716 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15717 | } |
15718 | break; | |
9a23f96e AM |
15719 | |
15720 | case R_PPC64_TPREL16_HA: | |
15721 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15722 | { | |
15723 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15724 | insn = bfd_get_32 (input_bfd, p); | |
15725 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
15726 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
15727 | /* xgettext:c-format */ | |
15728 | info->callbacks->minfo | |
15729 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
15730 | input_bfd, input_section, rel->r_offset, |
15731 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 15732 | else |
d830549d AM |
15733 | { |
15734 | bfd_put_32 (input_bfd, NOP, p); | |
15735 | goto copy_reloc; | |
15736 | } | |
9a23f96e AM |
15737 | } |
15738 | break; | |
15739 | ||
15740 | case R_PPC64_TPREL16_LO: | |
15741 | case R_PPC64_TPREL16_LO_DS: | |
15742 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15743 | { | |
15744 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15745 | insn = bfd_get_32 (input_bfd, p); | |
15746 | insn &= ~(0x1f << 16); | |
15747 | insn |= 13 << 16; | |
15748 | bfd_put_32 (input_bfd, insn, p); | |
15749 | } | |
15750 | break; | |
67f0cbdb AM |
15751 | } |
15752 | ||
65f38f15 AM |
15753 | /* Do any further special processing. */ |
15754 | switch (r_type) | |
15755 | { | |
15756 | default: | |
15757 | break; | |
15758 | ||
25f23106 | 15759 | case R_PPC64_REL16_HA: |
a680de9a | 15760 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15761 | case R_PPC64_ADDR16_HA: |
15762 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15763 | case R_PPC64_ADDR16_HIGHERA: |
15764 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15765 | case R_PPC64_TOC16_HA: |
15766 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15767 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15768 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15769 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15770 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15771 | case R_PPC64_DTPREL16_HA: |
15772 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15773 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15774 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15775 | /* It's just possible that this symbol is a weak symbol |
15776 | that's not actually defined anywhere. In that case, | |
15777 | 'sec' would be NULL, and we should leave the symbol | |
15778 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15779 | if (sec == NULL) |
15780 | break; | |
1a0670f3 | 15781 | /* Fall through. */ |
5c5f6e17 AM |
15782 | |
15783 | case R_PPC64_GOT16_HA: | |
15784 | case R_PPC64_PLTGOT16_HA: | |
15785 | case R_PPC64_PLT16_HA: | |
15786 | case R_PPC64_GOT_TLSGD16_HA: | |
15787 | case R_PPC64_GOT_TLSLD16_HA: | |
15788 | case R_PPC64_GOT_TPREL16_HA: | |
15789 | case R_PPC64_GOT_DTPREL16_HA: | |
15790 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15791 | Bits 0:15 are not used. */ | |
15792 | addend += 0x8000; | |
65f38f15 AM |
15793 | break; |
15794 | ||
15795 | case R_PPC64_ADDR16_DS: | |
15796 | case R_PPC64_ADDR16_LO_DS: | |
15797 | case R_PPC64_GOT16_DS: | |
15798 | case R_PPC64_GOT16_LO_DS: | |
15799 | case R_PPC64_PLT16_LO_DS: | |
15800 | case R_PPC64_SECTOFF_DS: | |
15801 | case R_PPC64_SECTOFF_LO_DS: | |
15802 | case R_PPC64_TOC16_DS: | |
15803 | case R_PPC64_TOC16_LO_DS: | |
15804 | case R_PPC64_PLTGOT16_DS: | |
15805 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15806 | case R_PPC64_GOT_TPREL16_DS: |
15807 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15808 | case R_PPC64_GOT_DTPREL16_DS: | |
15809 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15810 | case R_PPC64_TPREL16_DS: | |
15811 | case R_PPC64_TPREL16_LO_DS: | |
15812 | case R_PPC64_DTPREL16_DS: | |
15813 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15814 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15815 | mask = 3; | |
a680de9a PB |
15816 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15817 | the value must be a multiple of 16. This is somewhat of | |
15818 | a hack, but the "correct" way to do this by defining _DQ | |
15819 | forms of all the _DS relocs bloats all reloc switches in | |
15820 | this file. It doesn't make much sense to use these | |
15821 | relocs in data, so testing the insn should be safe. */ | |
15822 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15823 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15824 | mask = 15; |
a680de9a PB |
15825 | relocation += addend; |
15826 | addend = insn & (mask ^ 3); | |
15827 | if ((relocation & mask) != 0) | |
65f38f15 | 15828 | { |
a680de9a | 15829 | relocation ^= relocation & mask; |
25f53a85 | 15830 | info->callbacks->einfo |
695344c0 | 15831 | /* xgettext:c-format */ |
174d0a74 | 15832 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 15833 | input_bfd, input_section, rel->r_offset, |
d830549d | 15834 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 15835 | mask + 1); |
65f38f15 | 15836 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15837 | ret = FALSE; |
c316a17c | 15838 | goto copy_reloc; |
65f38f15 AM |
15839 | } |
15840 | break; | |
5bd4f169 AM |
15841 | } |
15842 | ||
239e1f3a AM |
15843 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15844 | because such sections are not SEC_ALLOC and thus ld.so will | |
15845 | not process them. */ | |
d830549d | 15846 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 15847 | if (unresolved_reloc |
239e1f3a | 15848 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15849 | && h->elf.def_dynamic) |
15850 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15851 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15852 | { |
25f53a85 | 15853 | info->callbacks->einfo |
695344c0 | 15854 | /* xgettext:c-format */ |
c1c8c1ef | 15855 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 15856 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15857 | howto->name, |
039b3fef | 15858 | h->elf.root.root.string); |
b34976b6 | 15859 | ret = FALSE; |
9c07fe7c | 15860 | } |
5bd4f169 | 15861 | |
b80eed39 AM |
15862 | /* 16-bit fields in insns mostly have signed values, but a |
15863 | few insns have 16-bit unsigned values. Really, we should | |
15864 | have different reloc types. */ | |
15865 | if (howto->complain_on_overflow != complain_overflow_dont | |
15866 | && howto->dst_mask == 0xffff | |
15867 | && (input_section->flags & SEC_CODE) != 0) | |
15868 | { | |
15869 | enum complain_overflow complain = complain_overflow_signed; | |
15870 | ||
15871 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15872 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15873 | complain = complain_overflow_bitfield; | |
15874 | else if (howto->rightshift == 0 | |
15875 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15876 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15877 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15878 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15879 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15880 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15881 | complain = complain_overflow_unsigned; |
15882 | if (howto->complain_on_overflow != complain) | |
15883 | { | |
15884 | alt_howto = *howto; | |
15885 | alt_howto.complain_on_overflow = complain; | |
15886 | howto = &alt_howto; | |
15887 | } | |
15888 | } | |
15889 | ||
a680de9a PB |
15890 | if (r_type == R_PPC64_REL16DX_HA) |
15891 | { | |
15892 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15893 | if (rel->r_offset + 4 > input_section->size) | |
15894 | r = bfd_reloc_outofrange; | |
15895 | else | |
15896 | { | |
15897 | relocation += addend; | |
15898 | relocation -= (rel->r_offset | |
15899 | + input_section->output_offset | |
15900 | + input_section->output_section->vma); | |
3de43e7b | 15901 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
15902 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
15903 | insn &= ~0x1fffc1; | |
3de43e7b | 15904 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
15905 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15906 | r = bfd_reloc_ok; | |
3de43e7b | 15907 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
15908 | r = bfd_reloc_overflow; |
15909 | } | |
15910 | } | |
15911 | else | |
15912 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15913 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15914 | |
ef60b7ff | 15915 | if (r != bfd_reloc_ok) |
5bd4f169 | 15916 | { |
bc30df16 | 15917 | char *more_info = NULL; |
b80eed39 | 15918 | const char *reloc_name = howto->name; |
bc30df16 AM |
15919 | |
15920 | if (reloc_dest != DEST_NORMAL) | |
15921 | { | |
15922 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15923 | if (more_info != NULL) | |
15924 | { | |
15925 | strcpy (more_info, reloc_name); | |
15926 | strcat (more_info, (reloc_dest == DEST_OPD | |
15927 | ? " (OPD)" : " (stub)")); | |
15928 | reloc_name = more_info; | |
15929 | } | |
15930 | } | |
15931 | ||
cd27b276 | 15932 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15933 | { |
8131c122 AM |
15934 | /* On code like "if (foo) foo();" don't report overflow |
15935 | on a branch to zero when foo is undefined. */ | |
15936 | if (!warned | |
15937 | && (reloc_dest == DEST_STUB | |
15938 | || !(h != NULL | |
15939 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15940 | || h->elf.root.type == bfd_link_hash_undefined) | |
15941 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15942 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15943 | sym_name, reloc_name, | |
15944 | orig_rel.r_addend, | |
15945 | input_bfd, input_section, | |
15946 | rel->r_offset); | |
ef60b7ff AM |
15947 | } |
15948 | else | |
15949 | { | |
25f53a85 | 15950 | info->callbacks->einfo |
695344c0 | 15951 | /* xgettext:c-format */ |
c1c8c1ef | 15952 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 15953 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15954 | reloc_name, sym_name, (int) r); |
b34976b6 | 15955 | ret = FALSE; |
ef60b7ff | 15956 | } |
bc30df16 AM |
15957 | if (more_info != NULL) |
15958 | free (more_info); | |
5bd4f169 | 15959 | } |
c316a17c AM |
15960 | copy_reloc: |
15961 | if (wrel != rel) | |
15962 | *wrel = *rel; | |
15963 | } | |
15964 | ||
15965 | if (wrel != rel) | |
15966 | { | |
15967 | Elf_Internal_Shdr *rel_hdr; | |
15968 | size_t deleted = rel - wrel; | |
15969 | ||
15970 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15971 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15972 | if (rel_hdr->sh_size == 0) | |
15973 | { | |
15974 | /* It is too late to remove an empty reloc section. Leave | |
15975 | one NONE reloc. | |
15976 | ??? What is wrong with an empty section??? */ | |
15977 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15978 | deleted -= 1; | |
15979 | } | |
15980 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15981 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15982 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15983 | } |
15984 | ||
645ea6a9 AM |
15985 | /* If we're emitting relocations, then shortly after this function |
15986 | returns, reloc offsets and addends for this section will be | |
15987 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15988 | file rather than the input. Save a copy of the relocs for |
15989 | opd_entry_value. */ | |
0e1862bb | 15990 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15991 | { |
15992 | bfd_size_type amt; | |
15993 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15994 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15995 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15996 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15997 | if (rel == NULL) |
15998 | return FALSE; | |
15999 | memcpy (rel, relocs, amt); | |
16000 | } | |
5bd4f169 AM |
16001 | return ret; |
16002 | } | |
16003 | ||
754021d0 AM |
16004 | /* Adjust the value of any local symbols in opd sections. */ |
16005 | ||
6e0b88f1 | 16006 | static int |
754021d0 AM |
16007 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16008 | const char *name ATTRIBUTE_UNUSED, | |
16009 | Elf_Internal_Sym *elfsym, | |
16010 | asection *input_sec, | |
16011 | struct elf_link_hash_entry *h) | |
16012 | { | |
74f0fb50 AM |
16013 | struct _opd_sec_data *opd; |
16014 | long adjust; | |
754021d0 AM |
16015 | bfd_vma value; |
16016 | ||
4025353c | 16017 | if (h != NULL) |
6e0b88f1 | 16018 | return 1; |
4025353c | 16019 | |
74f0fb50 AM |
16020 | opd = get_opd_info (input_sec); |
16021 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16022 | return 1; |
754021d0 AM |
16023 | |
16024 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16025 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16026 | value -= input_sec->output_section->vma; |
16027 | ||
51aecdc5 | 16028 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16029 | if (adjust == -1) |
6e0b88f1 AM |
16030 | return 2; |
16031 | ||
16032 | elfsym->st_value += adjust; | |
16033 | return 1; | |
754021d0 AM |
16034 | } |
16035 | ||
5bd4f169 AM |
16036 | /* Finish up dynamic symbol handling. We set the contents of various |
16037 | dynamic sections here. */ | |
16038 | ||
b34976b6 | 16039 | static bfd_boolean |
4ce794b7 AM |
16040 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16041 | struct bfd_link_info *info, | |
16042 | struct elf_link_hash_entry *h, | |
4aef7643 | 16043 | Elf_Internal_Sym *sym) |
5bd4f169 | 16044 | { |
65f38f15 | 16045 | struct ppc_link_hash_table *htab; |
8387904d | 16046 | struct plt_entry *ent; |
5bd4f169 | 16047 | |
65f38f15 | 16048 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16049 | if (htab == NULL) |
16050 | return FALSE; | |
5bd4f169 | 16051 | |
49c09209 AM |
16052 | if (!htab->opd_abi && !h->def_regular) |
16053 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16054 | if (ent->plt.offset != (bfd_vma) -1) | |
16055 | { | |
16056 | /* Mark the symbol as undefined, rather than as | |
16057 | defined in glink. Leave the value if there were | |
16058 | any relocations where pointer equality matters | |
16059 | (this is a clue for the dynamic linker, to make | |
16060 | function pointer comparisons work between an | |
16061 | application and shared library), otherwise set it | |
16062 | to zero. */ | |
16063 | sym->st_shndx = SHN_UNDEF; | |
16064 | if (!h->pointer_equality_needed) | |
16065 | sym->st_value = 0; | |
16066 | else if (!h->ref_regular_nonweak) | |
16067 | { | |
16068 | /* This breaks function pointer comparisons, but | |
16069 | that is better than breaking tests for a NULL | |
16070 | function pointer. */ | |
16071 | sym->st_value = 0; | |
16072 | } | |
16073 | break; | |
16074 | } | |
5bd4f169 | 16075 | |
f5385ebf | 16076 | if (h->needs_copy) |
5bd4f169 | 16077 | { |
65f38f15 | 16078 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16079 | Elf_Internal_Rela rela; |
5474d94f | 16080 | asection *srel; |
49c09209 | 16081 | bfd_byte *loc; |
5bd4f169 | 16082 | |
65f38f15 AM |
16083 | if (h->dynindx == -1 |
16084 | || (h->root.type != bfd_link_hash_defined | |
16085 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
16086 | || htab->elf.srelbss == NULL |
16087 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 16088 | abort (); |
5bd4f169 AM |
16089 | |
16090 | rela.r_offset = (h->root.u.def.value | |
16091 | + h->root.u.def.section->output_section->vma | |
16092 | + h->root.u.def.section->output_offset); | |
16093 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16094 | rela.r_addend = 0; | |
afbf7e8e | 16095 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16096 | srel = htab->elf.sreldynrelro; |
16097 | else | |
16098 | srel = htab->elf.srelbss; | |
16099 | loc = srel->contents; | |
16100 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16101 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16102 | } |
16103 | ||
b34976b6 | 16104 | return TRUE; |
5bd4f169 AM |
16105 | } |
16106 | ||
65f38f15 AM |
16107 | /* Used to decide how to sort relocs in an optimal manner for the |
16108 | dynamic linker, before writing them out. */ | |
16109 | ||
16110 | static enum elf_reloc_type_class | |
7e612e98 AM |
16111 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16112 | const asection *rel_sec, | |
16113 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16114 | { |
04c9666a | 16115 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16116 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16117 | ||
33e44f2e | 16118 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16119 | return reloc_class_ifunc; |
a33d1f77 | 16120 | |
4ce794b7 | 16121 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16122 | switch (r_type) |
65f38f15 AM |
16123 | { |
16124 | case R_PPC64_RELATIVE: | |
16125 | return reloc_class_relative; | |
16126 | case R_PPC64_JMP_SLOT: | |
16127 | return reloc_class_plt; | |
16128 | case R_PPC64_COPY: | |
16129 | return reloc_class_copy; | |
16130 | default: | |
16131 | return reloc_class_normal; | |
16132 | } | |
16133 | } | |
16134 | ||
5bd4f169 AM |
16135 | /* Finish up the dynamic sections. */ |
16136 | ||
b34976b6 | 16137 | static bfd_boolean |
4ce794b7 AM |
16138 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16139 | struct bfd_link_info *info) | |
5bd4f169 | 16140 | { |
65f38f15 AM |
16141 | struct ppc_link_hash_table *htab; |
16142 | bfd *dynobj; | |
5bd4f169 | 16143 | asection *sdyn; |
5bd4f169 | 16144 | |
65f38f15 | 16145 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16146 | if (htab == NULL) |
16147 | return FALSE; | |
16148 | ||
65f38f15 | 16149 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16150 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16151 | |
65f38f15 | 16152 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16153 | { |
5bd4f169 AM |
16154 | Elf64_External_Dyn *dyncon, *dynconend; |
16155 | ||
33e44f2e | 16156 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16157 | abort (); |
5bd4f169 AM |
16158 | |
16159 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16160 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16161 | for (; dyncon < dynconend; dyncon++) |
16162 | { | |
16163 | Elf_Internal_Dyn dyn; | |
19397422 | 16164 | asection *s; |
5bd4f169 AM |
16165 | |
16166 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16167 | ||
16168 | switch (dyn.d_tag) | |
16169 | { | |
65f38f15 AM |
16170 | default: |
16171 | continue; | |
5bd4f169 | 16172 | |
5d1634d7 | 16173 | case DT_PPC64_GLINK: |
4ce794b7 | 16174 | s = htab->glink; |
6348e046 | 16175 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16176 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16177 | of glink rather than the first entry point, which is | |
16178 | what ld.so needs, and now have a bigger stub to | |
16179 | support automatic multiple TOCs. */ | |
9e390558 | 16180 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16181 | break; |
16182 | ||
19397422 AM |
16183 | case DT_PPC64_OPD: |
16184 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16185 | if (s == NULL) |
16186 | continue; | |
16187 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16188 | break; |
16189 | ||
e8910a83 AM |
16190 | case DT_PPC64_OPT: |
16191 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
16192 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
16193 | if (htab->has_plt_localentry0) |
16194 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16195 | break; |
16196 | ||
19397422 AM |
16197 | case DT_PPC64_OPDSZ: |
16198 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16199 | if (s == NULL) |
16200 | continue; | |
eea6121a | 16201 | dyn.d_un.d_val = s->size; |
19397422 AM |
16202 | break; |
16203 | ||
65f38f15 | 16204 | case DT_PLTGOT: |
33e44f2e | 16205 | s = htab->elf.splt; |
6348e046 | 16206 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16207 | break; |
16208 | ||
16209 | case DT_JMPREL: | |
33e44f2e | 16210 | s = htab->elf.srelplt; |
6348e046 | 16211 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 16212 | break; |
5bd4f169 | 16213 | |
65f38f15 | 16214 | case DT_PLTRELSZ: |
33e44f2e | 16215 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 16216 | break; |
82e66161 AM |
16217 | |
16218 | case DT_TEXTREL: | |
16219 | if (htab->local_ifunc_resolver) | |
16220 | info->callbacks->einfo | |
16221 | (_("%X%P: text relocations and GNU indirect " | |
16222 | "functions will result in a segfault at runtime\n")); | |
16223 | else if (htab->maybe_local_ifunc_resolver) | |
16224 | info->callbacks->einfo | |
16225 | (_("%P: warning: text relocations and GNU indirect " | |
16226 | "functions may result in a segfault at runtime\n")); | |
16227 | continue; | |
5bd4f169 | 16228 | } |
5bd4f169 | 16229 | |
65f38f15 | 16230 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 16231 | } |
5bd4f169 AM |
16232 | } |
16233 | ||
6528b6eb AM |
16234 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
16235 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16236 | { |
16237 | /* Fill in the first entry in the global offset table. | |
16238 | We use it to hold the link-time TOCbase. */ | |
16239 | bfd_put_64 (output_bfd, | |
60ee0d4a | 16240 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 16241 | htab->elf.sgot->contents); |
5d1634d7 AM |
16242 | |
16243 | /* Set .got entry size. */ | |
33e44f2e | 16244 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
16245 | } |
16246 | ||
6528b6eb AM |
16247 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
16248 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16249 | { |
16250 | /* Set .plt entry size. */ | |
33e44f2e | 16251 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 16252 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
16253 | } |
16254 | ||
84f5d08e AM |
16255 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
16256 | brlt ourselves if emitrelocations. */ | |
16257 | if (htab->brlt != NULL | |
16258 | && htab->brlt->reloc_count != 0 | |
16259 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16260 | htab->brlt, | |
d4730f92 | 16261 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
16262 | elf_section_data (htab->brlt)->relocs, |
16263 | NULL)) | |
16264 | return FALSE; | |
16265 | ||
176a0d42 AM |
16266 | if (htab->glink != NULL |
16267 | && htab->glink->reloc_count != 0 | |
16268 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16269 | htab->glink, | |
d4730f92 | 16270 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
16271 | elf_section_data (htab->glink)->relocs, |
16272 | NULL)) | |
16273 | return FALSE; | |
16274 | ||
58d180e8 | 16275 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
16276 | && htab->glink_eh_frame->size != 0) |
16277 | { | |
16278 | bfd_vma val; | |
16279 | bfd_byte *p; | |
d4aaa2a0 | 16280 | struct map_stub *group; |
2e0ce1c8 | 16281 | size_t align = 4; |
da44f4e5 | 16282 | |
2e0ce1c8 AM |
16283 | p = htab->glink_eh_frame->contents; |
16284 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
d4aaa2a0 AM |
16285 | |
16286 | for (group = htab->group; group != NULL; group = group->next) | |
16287 | if (group->stub_sec != NULL) | |
da44f4e5 | 16288 | { |
da44f4e5 | 16289 | /* Offset to stub section. */ |
d4aaa2a0 AM |
16290 | val = (group->stub_sec->output_section->vma |
16291 | + group->stub_sec->output_offset); | |
da44f4e5 AM |
16292 | val -= (htab->glink_eh_frame->output_section->vma |
16293 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16294 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16295 | if (val + 0x80000000 > 0xffffffff) |
16296 | { | |
cf97bcb0 AM |
16297 | _bfd_error_handler |
16298 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
d4aaa2a0 | 16299 | group->stub_sec->name); |
da44f4e5 AM |
16300 | return FALSE; |
16301 | } | |
d4aaa2a0 AM |
16302 | bfd_put_32 (dynobj, val, p + 8); |
16303 | p += stub_eh_frame_size (group, align); | |
da44f4e5 AM |
16304 | } |
16305 | if (htab->glink != NULL && htab->glink->size != 0) | |
16306 | { | |
da44f4e5 AM |
16307 | /* Offset to .glink. */ |
16308 | val = (htab->glink->output_section->vma | |
16309 | + htab->glink->output_offset | |
16310 | + 8); | |
16311 | val -= (htab->glink_eh_frame->output_section->vma | |
16312 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16313 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16314 | if (val + 0x80000000 > 0xffffffff) |
16315 | { | |
cf97bcb0 AM |
16316 | _bfd_error_handler |
16317 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
da44f4e5 AM |
16318 | htab->glink->name); |
16319 | return FALSE; | |
16320 | } | |
d4aaa2a0 AM |
16321 | bfd_put_32 (dynobj, val, p + 8); |
16322 | p += (24 + align - 1) & -align; | |
da44f4e5 AM |
16323 | } |
16324 | ||
16325 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
16326 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
16327 | htab->glink_eh_frame, | |
16328 | htab->glink_eh_frame->contents)) | |
16329 | return FALSE; | |
16330 | } | |
58d180e8 | 16331 | |
e717da7e | 16332 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
16333 | since we didn't add them to DYNOBJ. We know dynobj is the first |
16334 | bfd. */ | |
c72f2fb2 | 16335 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
16336 | { |
16337 | asection *s; | |
7b53ace3 | 16338 | |
0c8d6e5c | 16339 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
16340 | continue; |
16341 | ||
e717da7e AM |
16342 | s = ppc64_elf_tdata (dynobj)->got; |
16343 | if (s != NULL | |
eea6121a | 16344 | && s->size != 0 |
e717da7e AM |
16345 | && s->output_section != bfd_abs_section_ptr |
16346 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16347 | s->contents, s->output_offset, | |
eea6121a | 16348 | s->size)) |
e717da7e AM |
16349 | return FALSE; |
16350 | s = ppc64_elf_tdata (dynobj)->relgot; | |
16351 | if (s != NULL | |
eea6121a | 16352 | && s->size != 0 |
e717da7e AM |
16353 | && s->output_section != bfd_abs_section_ptr |
16354 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16355 | s->contents, s->output_offset, | |
eea6121a | 16356 | s->size)) |
e717da7e AM |
16357 | return FALSE; |
16358 | } | |
f6c52c13 | 16359 | |
b34976b6 | 16360 | return TRUE; |
5bd4f169 AM |
16361 | } |
16362 | ||
5bd4f169 | 16363 | #include "elf64-target.h" |
7b8e7dad AM |
16364 | |
16365 | /* FreeBSD support */ | |
16366 | ||
16367 | #undef TARGET_LITTLE_SYM | |
16368 | #undef TARGET_LITTLE_NAME | |
16369 | ||
16370 | #undef TARGET_BIG_SYM | |
6d00b590 | 16371 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
16372 | #undef TARGET_BIG_NAME |
16373 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
16374 | ||
16375 | #undef ELF_OSABI | |
16376 | #define ELF_OSABI ELFOSABI_FREEBSD | |
16377 | ||
16378 | #undef elf64_bed | |
16379 | #define elf64_bed elf64_powerpc_fbsd_bed | |
16380 | ||
16381 | #include "elf64-target.h" |