Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
84f5d08e | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
b2a8e766 | 3 | Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 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 | |
183e98be | 28 | #include <stdarg.h> |
5bd4f169 AM |
29 | #include "bfd.h" |
30 | #include "sysdep.h" | |
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" |
5bd4f169 | 36 | |
805fc799 | 37 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 38 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
39 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 41 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 43 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
55 | static bfd_vma opd_entry_value |
56 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 57 | |
ad8e1ba5 AM |
58 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
59 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
60 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
61 | #define TARGET_BIG_NAME "elf64-powerpc" | |
62 | #define ELF_ARCH bfd_arch_powerpc | |
63 | #define ELF_MACHINE_CODE EM_PPC64 | |
64 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 65 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
66 | #define elf_info_to_howto ppc64_elf_info_to_howto |
67 | ||
68 | #define elf_backend_want_got_sym 0 | |
69 | #define elf_backend_want_plt_sym 0 | |
70 | #define elf_backend_plt_alignment 3 | |
71 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 72 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
73 | #define elf_backend_can_gc_sections 1 |
74 | #define elf_backend_can_refcount 1 | |
75 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 76 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 77 | |
e717da7e | 78 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 79 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
157090f7 | 80 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ad8e1ba5 AM |
81 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
82 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
83 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
84 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 85 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
86 | |
87 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
88 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
89 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 90 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
91 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
92 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 93 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d | 94 | #define elf_backend_check_directives ppc64_elf_check_directives |
97fed1c9 | 95 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 96 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 97 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
64d03ab5 | 98 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
99 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
100 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
101 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
102 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
103 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
104 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 105 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 106 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
107 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
108 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
109 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
110 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 111 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 112 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 113 | |
5bd4f169 AM |
114 | /* The name of the dynamic interpreter. This is put in the .interp |
115 | section. */ | |
116 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
117 | ||
118 | /* The size in bytes of an entry in the procedure linkage table. */ | |
119 | #define PLT_ENTRY_SIZE 24 | |
120 | ||
121 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 122 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
123 | |
124 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
125 | #define TOC_BASE_OFF 0x8000 |
126 | ||
127 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
128 | #define TP_OFFSET 0x7000 | |
129 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 130 | |
ad8e1ba5 AM |
131 | /* .plt call stub instructions. The normal stub is like this, but |
132 | sometimes the .plt entry crosses a 64k boundary and we need to | |
133 | insert an addis to adjust r12. */ | |
134 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
135 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
136 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
137 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
138 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
139 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
140 | /* ld %r11,xxx+16@l(%r12) */ | |
141 | #define BCTR 0x4e800420 /* bctr */ | |
142 | ||
5d1634d7 | 143 | |
ee4bf8d2 | 144 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ad8e1ba5 AM |
145 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
146 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
147 | ||
148 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
149 | ||
ee4bf8d2 | 150 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 151 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
152 | /* 0: */ |
153 | /* .quad plt0-1f */ | |
154 | /* __glink: */ | |
155 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
156 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
157 | /* 1: */ | |
158 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
159 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
160 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
161 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
162 | /* ld %11,0(%12) */ | |
163 | /* ld %2,8(%12) */ | |
164 | /* mtctr %11 */ | |
165 | /* ld %11,16(%12) */ | |
166 | /* bctr */ | |
5d1634d7 AM |
167 | |
168 | /* Pad with this. */ | |
169 | #define NOP 0x60000000 | |
170 | ||
721956f4 AM |
171 | /* Some other nops. */ |
172 | #define CROR_151515 0x4def7b82 | |
173 | #define CROR_313131 0x4ffffb82 | |
174 | ||
cedb70c5 | 175 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
176 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
177 | #define B_DOT 0x48000000 /* b . */ | |
178 | ||
179 | /* After that, we need two instructions to load the index, followed by | |
180 | a branch. */ | |
181 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 182 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 183 | |
deb0e272 AM |
184 | /* Instructions used by the save and restore reg functions. */ |
185 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
186 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
187 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
188 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
189 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
190 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
191 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
192 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
193 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
194 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
195 | #define BLR 0x4e800020 /* blr */ |
196 | ||
41bd81ab AM |
197 | /* Since .opd is an array of descriptors and each entry will end up |
198 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
199 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 200 | relocate .opd without reloc entries. */ |
41bd81ab AM |
201 | #ifndef NO_OPD_RELOCS |
202 | #define NO_OPD_RELOCS 0 | |
203 | #endif | |
5bd4f169 | 204 | \f |
f5e87a1d | 205 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 206 | |
5bd4f169 | 207 | /* Relocation HOWTO's. */ |
04c9666a | 208 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
209 | |
210 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
211 | /* This reloc does nothing. */ | |
212 | HOWTO (R_PPC64_NONE, /* type */ | |
213 | 0, /* rightshift */ | |
411e1bfb AM |
214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
215 | 32, /* bitsize */ | |
b34976b6 | 216 | FALSE, /* pc_relative */ |
5bd4f169 | 217 | 0, /* bitpos */ |
f5e87a1d | 218 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
219 | bfd_elf_generic_reloc, /* special_function */ |
220 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 221 | FALSE, /* partial_inplace */ |
d006db6c | 222 | 0, /* src_mask */ |
5bd4f169 | 223 | 0, /* dst_mask */ |
b34976b6 | 224 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
225 | |
226 | /* A standard 32 bit relocation. */ | |
227 | HOWTO (R_PPC64_ADDR32, /* type */ | |
228 | 0, /* rightshift */ | |
229 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
230 | 32, /* bitsize */ | |
b34976b6 | 231 | FALSE, /* pc_relative */ |
5bd4f169 AM |
232 | 0, /* bitpos */ |
233 | complain_overflow_bitfield, /* complain_on_overflow */ | |
234 | bfd_elf_generic_reloc, /* special_function */ | |
235 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 236 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
237 | 0, /* src_mask */ |
238 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 239 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
240 | |
241 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
242 | FIXME: we don't check that, we just clear them. */ | |
243 | HOWTO (R_PPC64_ADDR24, /* type */ | |
244 | 0, /* rightshift */ | |
245 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
246 | 26, /* bitsize */ | |
b34976b6 | 247 | FALSE, /* pc_relative */ |
5bd4f169 AM |
248 | 0, /* bitpos */ |
249 | complain_overflow_bitfield, /* complain_on_overflow */ | |
250 | bfd_elf_generic_reloc, /* special_function */ | |
251 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 252 | FALSE, /* partial_inplace */ |
d006db6c | 253 | 0, /* src_mask */ |
f5e87a1d | 254 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 255 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
256 | |
257 | /* A standard 16 bit relocation. */ | |
258 | HOWTO (R_PPC64_ADDR16, /* type */ | |
259 | 0, /* rightshift */ | |
260 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
261 | 16, /* bitsize */ | |
b34976b6 | 262 | FALSE, /* pc_relative */ |
5bd4f169 AM |
263 | 0, /* bitpos */ |
264 | complain_overflow_bitfield, /* complain_on_overflow */ | |
265 | bfd_elf_generic_reloc, /* special_function */ | |
266 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 267 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
268 | 0, /* src_mask */ |
269 | 0xffff, /* dst_mask */ | |
b34976b6 | 270 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
271 | |
272 | /* A 16 bit relocation without overflow. */ | |
273 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
274 | 0, /* rightshift */ | |
275 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
276 | 16, /* bitsize */ | |
b34976b6 | 277 | FALSE, /* pc_relative */ |
5bd4f169 AM |
278 | 0, /* bitpos */ |
279 | complain_overflow_dont,/* complain_on_overflow */ | |
280 | bfd_elf_generic_reloc, /* special_function */ | |
281 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 282 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
283 | 0, /* src_mask */ |
284 | 0xffff, /* dst_mask */ | |
b34976b6 | 285 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
286 | |
287 | /* Bits 16-31 of an address. */ | |
288 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
289 | 16, /* rightshift */ | |
290 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
291 | 16, /* bitsize */ | |
b34976b6 | 292 | FALSE, /* pc_relative */ |
5bd4f169 AM |
293 | 0, /* bitpos */ |
294 | complain_overflow_dont, /* complain_on_overflow */ | |
295 | bfd_elf_generic_reloc, /* special_function */ | |
296 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 297 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
298 | 0, /* src_mask */ |
299 | 0xffff, /* dst_mask */ | |
b34976b6 | 300 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
301 | |
302 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
303 | bits, treated as a signed number, is negative. */ | |
304 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
305 | 16, /* rightshift */ | |
306 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
307 | 16, /* bitsize */ | |
b34976b6 | 308 | FALSE, /* pc_relative */ |
5bd4f169 AM |
309 | 0, /* bitpos */ |
310 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 311 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 312 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 313 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
314 | 0, /* src_mask */ |
315 | 0xffff, /* dst_mask */ | |
b34976b6 | 316 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
317 | |
318 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
319 | FIXME: we don't check that, we just clear them. */ | |
320 | HOWTO (R_PPC64_ADDR14, /* type */ | |
321 | 0, /* rightshift */ | |
322 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
323 | 16, /* bitsize */ | |
b34976b6 | 324 | FALSE, /* pc_relative */ |
5bd4f169 AM |
325 | 0, /* bitpos */ |
326 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 327 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 328 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 329 | FALSE, /* partial_inplace */ |
d006db6c | 330 | 0, /* src_mask */ |
f5e87a1d | 331 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 332 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
333 | |
334 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
335 | indicate that the branch is expected to be taken. The lower two | |
336 | bits must be zero. */ | |
337 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
338 | 0, /* rightshift */ | |
339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
340 | 16, /* bitsize */ | |
b34976b6 | 341 | FALSE, /* pc_relative */ |
5bd4f169 AM |
342 | 0, /* bitpos */ |
343 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 344 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 345 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 346 | FALSE, /* partial_inplace */ |
d006db6c | 347 | 0, /* src_mask */ |
f5e87a1d | 348 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 349 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
350 | |
351 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
352 | indicate that the branch is not expected to be taken. The lower | |
353 | two bits must be zero. */ | |
354 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 16, /* bitsize */ | |
b34976b6 | 358 | FALSE, /* pc_relative */ |
5bd4f169 AM |
359 | 0, /* bitpos */ |
360 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 361 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 362 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 363 | FALSE, /* partial_inplace */ |
d006db6c | 364 | 0, /* src_mask */ |
f5e87a1d | 365 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 366 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
367 | |
368 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
369 | HOWTO (R_PPC64_REL24, /* type */ | |
370 | 0, /* rightshift */ | |
371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 26, /* bitsize */ | |
b34976b6 | 373 | TRUE, /* pc_relative */ |
5bd4f169 AM |
374 | 0, /* bitpos */ |
375 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 376 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 377 | "R_PPC64_REL24", /* name */ |
b34976b6 | 378 | FALSE, /* partial_inplace */ |
d006db6c | 379 | 0, /* src_mask */ |
f5e87a1d | 380 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 381 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
382 | |
383 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
384 | HOWTO (R_PPC64_REL14, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 16, /* bitsize */ | |
b34976b6 | 388 | TRUE, /* pc_relative */ |
5bd4f169 AM |
389 | 0, /* bitpos */ |
390 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 391 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 392 | "R_PPC64_REL14", /* name */ |
b34976b6 | 393 | FALSE, /* partial_inplace */ |
d006db6c | 394 | 0, /* src_mask */ |
f5e87a1d | 395 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 396 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
397 | |
398 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
399 | the branch is expected to be taken. The lower two bits must be | |
400 | zero. */ | |
401 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | TRUE, /* pc_relative */ |
5bd4f169 AM |
406 | 0, /* bitpos */ |
407 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 408 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 409 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
d006db6c | 411 | 0, /* src_mask */ |
f5e87a1d | 412 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 413 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
414 | |
415 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
416 | the branch is not expected to be taken. The lower two bits must | |
417 | be zero. */ | |
418 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
419 | 0, /* rightshift */ | |
420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
421 | 16, /* bitsize */ | |
b34976b6 | 422 | TRUE, /* pc_relative */ |
5bd4f169 AM |
423 | 0, /* bitpos */ |
424 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 425 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 426 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 427 | FALSE, /* partial_inplace */ |
d006db6c | 428 | 0, /* src_mask */ |
f5e87a1d | 429 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 430 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
431 | |
432 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
433 | symbol. */ | |
434 | HOWTO (R_PPC64_GOT16, /* type */ | |
435 | 0, /* rightshift */ | |
436 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
437 | 16, /* bitsize */ | |
b34976b6 | 438 | FALSE, /* pc_relative */ |
5bd4f169 AM |
439 | 0, /* bitpos */ |
440 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 441 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 442 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 443 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
444 | 0, /* src_mask */ |
445 | 0xffff, /* dst_mask */ | |
b34976b6 | 446 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
447 | |
448 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
449 | the symbol. */ | |
450 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
451 | 0, /* rightshift */ | |
452 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 16, /* bitsize */ | |
b34976b6 | 454 | FALSE, /* pc_relative */ |
5bd4f169 AM |
455 | 0, /* bitpos */ |
456 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 457 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 458 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 459 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
460 | 0, /* src_mask */ |
461 | 0xffff, /* dst_mask */ | |
b34976b6 | 462 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
463 | |
464 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
465 | the symbol. */ | |
466 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
467 | 16, /* rightshift */ | |
468 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
469 | 16, /* bitsize */ | |
b34976b6 | 470 | FALSE, /* pc_relative */ |
5bd4f169 AM |
471 | 0, /* bitpos */ |
472 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 473 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 474 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 475 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
476 | 0, /* src_mask */ |
477 | 0xffff, /* dst_mask */ | |
b34976b6 | 478 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
479 | |
480 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
481 | the symbol. */ | |
482 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
483 | 16, /* rightshift */ | |
484 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
485 | 16, /* bitsize */ | |
b34976b6 | 486 | FALSE, /* pc_relative */ |
5bd4f169 AM |
487 | 0, /* bitpos */ |
488 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 489 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 490 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 491 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
492 | 0, /* src_mask */ |
493 | 0xffff, /* dst_mask */ | |
b34976b6 | 494 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
495 | |
496 | /* This is used only by the dynamic linker. The symbol should exist | |
497 | both in the object being run and in some shared library. The | |
498 | dynamic linker copies the data addressed by the symbol from the | |
499 | shared library into the object, because the object being | |
500 | run has to have the data at some particular address. */ | |
501 | HOWTO (R_PPC64_COPY, /* type */ | |
502 | 0, /* rightshift */ | |
f5e87a1d AM |
503 | 0, /* this one is variable size */ |
504 | 0, /* bitsize */ | |
b34976b6 | 505 | FALSE, /* pc_relative */ |
5bd4f169 | 506 | 0, /* bitpos */ |
f5e87a1d AM |
507 | complain_overflow_dont, /* complain_on_overflow */ |
508 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 509 | "R_PPC64_COPY", /* name */ |
b34976b6 | 510 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
511 | 0, /* src_mask */ |
512 | 0, /* dst_mask */ | |
b34976b6 | 513 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
514 | |
515 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
516 | entries. */ | |
517 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
518 | 0, /* rightshift */ | |
519 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
520 | 64, /* bitsize */ | |
b34976b6 | 521 | FALSE, /* pc_relative */ |
5bd4f169 AM |
522 | 0, /* bitpos */ |
523 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 524 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 525 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 526 | FALSE, /* partial_inplace */ |
5bd4f169 | 527 | 0, /* src_mask */ |
f5e87a1d | 528 | ONES (64), /* dst_mask */ |
b34976b6 | 529 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
530 | |
531 | /* Created by the link editor. Marks a procedure linkage table | |
532 | entry for a symbol. */ | |
533 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
534 | 0, /* rightshift */ | |
535 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
536 | 0, /* bitsize */ | |
b34976b6 | 537 | FALSE, /* pc_relative */ |
5bd4f169 AM |
538 | 0, /* bitpos */ |
539 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 540 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 541 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 542 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
543 | 0, /* src_mask */ |
544 | 0, /* dst_mask */ | |
b34976b6 | 545 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
546 | |
547 | /* Used only by the dynamic linker. When the object is run, this | |
548 | doubleword64 is set to the load address of the object, plus the | |
549 | addend. */ | |
550 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
551 | 0, /* rightshift */ | |
552 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
553 | 64, /* bitsize */ | |
b34976b6 | 554 | FALSE, /* pc_relative */ |
5bd4f169 AM |
555 | 0, /* bitpos */ |
556 | complain_overflow_dont, /* complain_on_overflow */ | |
557 | bfd_elf_generic_reloc, /* special_function */ | |
558 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 559 | FALSE, /* partial_inplace */ |
5bd4f169 | 560 | 0, /* src_mask */ |
f5e87a1d | 561 | ONES (64), /* dst_mask */ |
b34976b6 | 562 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
563 | |
564 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
565 | HOWTO (R_PPC64_UADDR32, /* type */ | |
566 | 0, /* rightshift */ | |
567 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
568 | 32, /* bitsize */ | |
b34976b6 | 569 | FALSE, /* pc_relative */ |
5bd4f169 AM |
570 | 0, /* bitpos */ |
571 | complain_overflow_bitfield, /* complain_on_overflow */ | |
572 | bfd_elf_generic_reloc, /* special_function */ | |
573 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 574 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
575 | 0, /* src_mask */ |
576 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 577 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
578 | |
579 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
580 | HOWTO (R_PPC64_UADDR16, /* type */ | |
581 | 0, /* rightshift */ | |
582 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
583 | 16, /* bitsize */ | |
b34976b6 | 584 | FALSE, /* pc_relative */ |
5bd4f169 AM |
585 | 0, /* bitpos */ |
586 | complain_overflow_bitfield, /* complain_on_overflow */ | |
587 | bfd_elf_generic_reloc, /* special_function */ | |
588 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 589 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
590 | 0, /* src_mask */ |
591 | 0xffff, /* dst_mask */ | |
b34976b6 | 592 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
593 | |
594 | /* 32-bit PC relative. */ | |
595 | HOWTO (R_PPC64_REL32, /* type */ | |
596 | 0, /* rightshift */ | |
597 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
598 | 32, /* bitsize */ | |
b34976b6 | 599 | TRUE, /* pc_relative */ |
5bd4f169 | 600 | 0, /* bitpos */ |
cedb70c5 | 601 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
602 | complain_overflow_signed, /* complain_on_overflow */ |
603 | bfd_elf_generic_reloc, /* special_function */ | |
604 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 605 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
606 | 0, /* src_mask */ |
607 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 608 | TRUE), /* pcrel_offset */ |
5bd4f169 | 609 | |
10ed1bba | 610 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
611 | HOWTO (R_PPC64_PLT32, /* type */ |
612 | 0, /* rightshift */ | |
613 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
614 | 32, /* bitsize */ | |
b34976b6 | 615 | FALSE, /* pc_relative */ |
5bd4f169 AM |
616 | 0, /* bitpos */ |
617 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 618 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 619 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 620 | FALSE, /* partial_inplace */ |
5bd4f169 | 621 | 0, /* src_mask */ |
f5e87a1d | 622 | 0xffffffff, /* dst_mask */ |
b34976b6 | 623 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
624 | |
625 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
626 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
627 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
628 | 0, /* rightshift */ | |
629 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
630 | 32, /* bitsize */ | |
b34976b6 | 631 | TRUE, /* pc_relative */ |
5bd4f169 AM |
632 | 0, /* bitpos */ |
633 | complain_overflow_signed, /* complain_on_overflow */ | |
634 | bfd_elf_generic_reloc, /* special_function */ | |
635 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 636 | FALSE, /* partial_inplace */ |
5bd4f169 | 637 | 0, /* src_mask */ |
f5e87a1d | 638 | 0xffffffff, /* dst_mask */ |
b34976b6 | 639 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
640 | |
641 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
642 | the symbol. */ | |
643 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
644 | 0, /* rightshift */ | |
645 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
646 | 16, /* bitsize */ | |
b34976b6 | 647 | FALSE, /* pc_relative */ |
5bd4f169 AM |
648 | 0, /* bitpos */ |
649 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 650 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 651 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 652 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
653 | 0, /* src_mask */ |
654 | 0xffff, /* dst_mask */ | |
b34976b6 | 655 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
656 | |
657 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
658 | the symbol. */ | |
659 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
660 | 16, /* rightshift */ | |
661 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
662 | 16, /* bitsize */ | |
b34976b6 | 663 | FALSE, /* pc_relative */ |
5bd4f169 AM |
664 | 0, /* bitpos */ |
665 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 666 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 667 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 668 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
669 | 0, /* src_mask */ |
670 | 0xffff, /* dst_mask */ | |
b34976b6 | 671 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
672 | |
673 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
674 | the symbol. */ | |
675 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
676 | 16, /* rightshift */ | |
677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
678 | 16, /* bitsize */ | |
b34976b6 | 679 | FALSE, /* pc_relative */ |
5bd4f169 AM |
680 | 0, /* bitpos */ |
681 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 682 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 683 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 684 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
685 | 0, /* src_mask */ |
686 | 0xffff, /* dst_mask */ | |
b34976b6 | 687 | FALSE), /* pcrel_offset */ |
5bd4f169 | 688 | |
c061c2d8 | 689 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
690 | HOWTO (R_PPC64_SECTOFF, /* type */ |
691 | 0, /* rightshift */ | |
c061c2d8 AM |
692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
693 | 16, /* bitsize */ | |
b34976b6 | 694 | FALSE, /* pc_relative */ |
5bd4f169 AM |
695 | 0, /* bitpos */ |
696 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 697 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 698 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 699 | FALSE, /* partial_inplace */ |
5bd4f169 | 700 | 0, /* src_mask */ |
c061c2d8 | 701 | 0xffff, /* dst_mask */ |
b34976b6 | 702 | FALSE), /* pcrel_offset */ |
5bd4f169 | 703 | |
c061c2d8 | 704 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
705 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
706 | 0, /* rightshift */ | |
707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
708 | 16, /* bitsize */ | |
b34976b6 | 709 | FALSE, /* pc_relative */ |
5bd4f169 AM |
710 | 0, /* bitpos */ |
711 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 712 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 713 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 714 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
715 | 0, /* src_mask */ |
716 | 0xffff, /* dst_mask */ | |
b34976b6 | 717 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
718 | |
719 | /* 16-bit upper half section relative relocation. */ | |
720 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
721 | 16, /* rightshift */ | |
722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 16, /* bitsize */ | |
b34976b6 | 724 | FALSE, /* pc_relative */ |
5bd4f169 AM |
725 | 0, /* bitpos */ |
726 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 727 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 728 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 729 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
730 | 0, /* src_mask */ |
731 | 0xffff, /* dst_mask */ | |
b34976b6 | 732 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
733 | |
734 | /* 16-bit upper half adjusted section relative relocation. */ | |
735 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
736 | 16, /* rightshift */ | |
737 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
738 | 16, /* bitsize */ | |
b34976b6 | 739 | FALSE, /* pc_relative */ |
5bd4f169 AM |
740 | 0, /* bitpos */ |
741 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 742 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 743 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 744 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
745 | 0, /* src_mask */ |
746 | 0xffff, /* dst_mask */ | |
b34976b6 | 747 | FALSE), /* pcrel_offset */ |
5bd4f169 | 748 | |
04c9666a AM |
749 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
750 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
751 | 2, /* rightshift */ |
752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
753 | 30, /* bitsize */ | |
b34976b6 | 754 | TRUE, /* pc_relative */ |
5bd4f169 AM |
755 | 0, /* bitpos */ |
756 | complain_overflow_dont, /* complain_on_overflow */ | |
757 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 758 | "R_PPC64_REL30", /* name */ |
b34976b6 | 759 | FALSE, /* partial_inplace */ |
d006db6c | 760 | 0, /* src_mask */ |
5bd4f169 | 761 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 762 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
763 | |
764 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
765 | ||
766 | /* A standard 64-bit relocation. */ | |
767 | HOWTO (R_PPC64_ADDR64, /* type */ | |
768 | 0, /* rightshift */ | |
769 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
770 | 64, /* bitsize */ | |
b34976b6 | 771 | FALSE, /* pc_relative */ |
5bd4f169 AM |
772 | 0, /* bitpos */ |
773 | complain_overflow_dont, /* complain_on_overflow */ | |
774 | bfd_elf_generic_reloc, /* special_function */ | |
775 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 776 | FALSE, /* partial_inplace */ |
5bd4f169 | 777 | 0, /* src_mask */ |
f5e87a1d | 778 | ONES (64), /* dst_mask */ |
b34976b6 | 779 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
780 | |
781 | /* The bits 32-47 of an address. */ | |
782 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
783 | 32, /* rightshift */ | |
784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
785 | 16, /* bitsize */ | |
b34976b6 | 786 | FALSE, /* pc_relative */ |
5bd4f169 AM |
787 | 0, /* bitpos */ |
788 | complain_overflow_dont, /* complain_on_overflow */ | |
789 | bfd_elf_generic_reloc, /* special_function */ | |
790 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 791 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
792 | 0, /* src_mask */ |
793 | 0xffff, /* dst_mask */ | |
b34976b6 | 794 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
795 | |
796 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
797 | 16 bits, treated as a signed number, is negative. */ | |
798 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
799 | 32, /* rightshift */ | |
800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
801 | 16, /* bitsize */ | |
b34976b6 | 802 | FALSE, /* pc_relative */ |
5bd4f169 AM |
803 | 0, /* bitpos */ |
804 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 805 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 806 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 807 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
808 | 0, /* src_mask */ |
809 | 0xffff, /* dst_mask */ | |
b34976b6 | 810 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
811 | |
812 | /* The bits 48-63 of an address. */ | |
813 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
814 | 48, /* rightshift */ | |
815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
816 | 16, /* bitsize */ | |
b34976b6 | 817 | FALSE, /* pc_relative */ |
5bd4f169 AM |
818 | 0, /* bitpos */ |
819 | complain_overflow_dont, /* complain_on_overflow */ | |
820 | bfd_elf_generic_reloc, /* special_function */ | |
821 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 822 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
823 | 0, /* src_mask */ |
824 | 0xffff, /* dst_mask */ | |
b34976b6 | 825 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
826 | |
827 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
828 | 16 bits, treated as a signed number, is negative. */ | |
829 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
830 | 48, /* rightshift */ | |
831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 16, /* bitsize */ | |
b34976b6 | 833 | FALSE, /* pc_relative */ |
5bd4f169 AM |
834 | 0, /* bitpos */ |
835 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 836 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 837 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 838 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
839 | 0, /* src_mask */ |
840 | 0xffff, /* dst_mask */ | |
b34976b6 | 841 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
842 | |
843 | /* Like ADDR64, but may be unaligned. */ | |
844 | HOWTO (R_PPC64_UADDR64, /* type */ | |
845 | 0, /* rightshift */ | |
846 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
847 | 64, /* bitsize */ | |
b34976b6 | 848 | FALSE, /* pc_relative */ |
5bd4f169 AM |
849 | 0, /* bitpos */ |
850 | complain_overflow_dont, /* complain_on_overflow */ | |
851 | bfd_elf_generic_reloc, /* special_function */ | |
852 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 853 | FALSE, /* partial_inplace */ |
5bd4f169 | 854 | 0, /* src_mask */ |
f5e87a1d | 855 | ONES (64), /* dst_mask */ |
b34976b6 | 856 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
857 | |
858 | /* 64-bit relative relocation. */ | |
859 | HOWTO (R_PPC64_REL64, /* type */ | |
860 | 0, /* rightshift */ | |
861 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
862 | 64, /* bitsize */ | |
b34976b6 | 863 | TRUE, /* pc_relative */ |
5bd4f169 AM |
864 | 0, /* bitpos */ |
865 | complain_overflow_dont, /* complain_on_overflow */ | |
866 | bfd_elf_generic_reloc, /* special_function */ | |
867 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 868 | FALSE, /* partial_inplace */ |
5bd4f169 | 869 | 0, /* src_mask */ |
f5e87a1d | 870 | ONES (64), /* dst_mask */ |
b34976b6 | 871 | TRUE), /* pcrel_offset */ |
5bd4f169 | 872 | |
cedb70c5 | 873 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
874 | HOWTO (R_PPC64_PLT64, /* type */ |
875 | 0, /* rightshift */ | |
876 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
877 | 64, /* bitsize */ | |
b34976b6 | 878 | FALSE, /* pc_relative */ |
5bd4f169 AM |
879 | 0, /* bitpos */ |
880 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 881 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 882 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 883 | FALSE, /* partial_inplace */ |
5bd4f169 | 884 | 0, /* src_mask */ |
f5e87a1d | 885 | ONES (64), /* dst_mask */ |
b34976b6 | 886 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
887 | |
888 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
889 | table. */ | |
890 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
891 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
892 | 0, /* rightshift */ | |
893 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
894 | 64, /* bitsize */ | |
b34976b6 | 895 | TRUE, /* pc_relative */ |
5bd4f169 AM |
896 | 0, /* bitpos */ |
897 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 898 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 899 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 900 | FALSE, /* partial_inplace */ |
5bd4f169 | 901 | 0, /* src_mask */ |
f5e87a1d | 902 | ONES (64), /* dst_mask */ |
b34976b6 | 903 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
904 | |
905 | /* 16 bit TOC-relative relocation. */ | |
906 | ||
907 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
908 | HOWTO (R_PPC64_TOC16, /* type */ | |
909 | 0, /* rightshift */ | |
910 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
911 | 16, /* bitsize */ | |
b34976b6 | 912 | FALSE, /* pc_relative */ |
5bd4f169 AM |
913 | 0, /* bitpos */ |
914 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 915 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 916 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 917 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
918 | 0, /* src_mask */ |
919 | 0xffff, /* dst_mask */ | |
b34976b6 | 920 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
921 | |
922 | /* 16 bit TOC-relative relocation without overflow. */ | |
923 | ||
924 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
925 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
926 | 0, /* rightshift */ | |
927 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
928 | 16, /* bitsize */ | |
b34976b6 | 929 | FALSE, /* pc_relative */ |
5bd4f169 AM |
930 | 0, /* bitpos */ |
931 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 932 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 933 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 934 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
935 | 0, /* src_mask */ |
936 | 0xffff, /* dst_mask */ | |
b34976b6 | 937 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
938 | |
939 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
940 | ||
941 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
942 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
943 | 16, /* rightshift */ | |
944 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
945 | 16, /* bitsize */ | |
b34976b6 | 946 | FALSE, /* pc_relative */ |
5bd4f169 AM |
947 | 0, /* bitpos */ |
948 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 949 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 950 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 951 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
952 | 0, /* src_mask */ |
953 | 0xffff, /* dst_mask */ | |
b34976b6 | 954 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
955 | |
956 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
957 | contents of the low 16 bits, treated as a signed number, is | |
958 | negative. */ | |
959 | ||
960 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
961 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
962 | 16, /* rightshift */ | |
963 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
964 | 16, /* bitsize */ | |
b34976b6 | 965 | FALSE, /* pc_relative */ |
5bd4f169 AM |
966 | 0, /* bitpos */ |
967 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 968 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 969 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 970 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
971 | 0, /* src_mask */ |
972 | 0xffff, /* dst_mask */ | |
b34976b6 | 973 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
974 | |
975 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
976 | ||
977 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
978 | HOWTO (R_PPC64_TOC, /* type */ | |
979 | 0, /* rightshift */ | |
980 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
981 | 64, /* bitsize */ | |
b34976b6 | 982 | FALSE, /* pc_relative */ |
5bd4f169 AM |
983 | 0, /* bitpos */ |
984 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 985 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 986 | "R_PPC64_TOC", /* name */ |
b34976b6 | 987 | FALSE, /* partial_inplace */ |
5bd4f169 | 988 | 0, /* src_mask */ |
f5e87a1d | 989 | ONES (64), /* dst_mask */ |
b34976b6 | 990 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
991 | |
992 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
993 | value to relocate may (!) refer to a PLT entry which the link | |
994 | editor (a) may replace with the symbol value. If the link editor | |
995 | is unable to fully resolve the symbol, it may (b) create a PLT | |
996 | entry and store the address to the new PLT entry in the GOT. | |
997 | This permits lazy resolution of function symbols at run time. | |
998 | The link editor may also skip all of this and just (c) emit a | |
999 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1000 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1001 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1002 | 0, /* rightshift */ | |
1003 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1004 | 16, /* bitsize */ | |
b34976b6 | 1005 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1006 | 0, /* bitpos */ |
1007 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1008 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1009 | "R_PPC64_PLTGOT16", /* name */ |
1010 | FALSE, /* partial_inplace */ | |
1011 | 0, /* src_mask */ | |
1012 | 0xffff, /* dst_mask */ | |
1013 | FALSE), /* pcrel_offset */ | |
1014 | ||
1015 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1016 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1017 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1018 | 0, /* rightshift */ | |
1019 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1020 | 16, /* bitsize */ | |
1021 | FALSE, /* pc_relative */ | |
1022 | 0, /* bitpos */ | |
1023 | complain_overflow_dont, /* complain_on_overflow */ | |
1024 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1025 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1026 | FALSE, /* partial_inplace */ | |
1027 | 0, /* src_mask */ | |
1028 | 0xffff, /* dst_mask */ | |
1029 | FALSE), /* pcrel_offset */ | |
1030 | ||
1031 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1032 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1033 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1034 | 16, /* rightshift */ | |
1035 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1036 | 16, /* bitsize */ | |
1037 | FALSE, /* pc_relative */ | |
1038 | 0, /* bitpos */ | |
1039 | complain_overflow_dont, /* complain_on_overflow */ | |
1040 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1041 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1042 | FALSE, /* partial_inplace */ | |
1043 | 0, /* src_mask */ | |
1044 | 0xffff, /* dst_mask */ | |
1045 | FALSE), /* pcrel_offset */ | |
1046 | ||
1047 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1048 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1049 | is negative. */ | |
1050 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1051 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1052 | 16, /* rightshift */ | |
1053 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1054 | 16, /* bitsize */ | |
1055 | FALSE, /* pc_relative */ | |
1056 | 0, /* bitpos */ | |
1057 | complain_overflow_dont,/* complain_on_overflow */ | |
1058 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1059 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1060 | FALSE, /* partial_inplace */ | |
1061 | 0, /* src_mask */ | |
1062 | 0xffff, /* dst_mask */ | |
1063 | FALSE), /* pcrel_offset */ | |
1064 | ||
1065 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1066 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1067 | 0, /* rightshift */ | |
1068 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1069 | 16, /* bitsize */ | |
1070 | FALSE, /* pc_relative */ | |
1071 | 0, /* bitpos */ | |
1072 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1073 | bfd_elf_generic_reloc, /* special_function */ | |
1074 | "R_PPC64_ADDR16_DS", /* name */ | |
1075 | FALSE, /* partial_inplace */ | |
1076 | 0, /* src_mask */ | |
1077 | 0xfffc, /* dst_mask */ | |
1078 | FALSE), /* pcrel_offset */ | |
1079 | ||
1080 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1081 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1082 | 0, /* rightshift */ | |
1083 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1084 | 16, /* bitsize */ | |
1085 | FALSE, /* pc_relative */ | |
1086 | 0, /* bitpos */ | |
1087 | complain_overflow_dont,/* complain_on_overflow */ | |
1088 | bfd_elf_generic_reloc, /* special_function */ | |
1089 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1090 | FALSE, /* partial_inplace */ | |
1091 | 0, /* src_mask */ | |
1092 | 0xfffc, /* dst_mask */ | |
1093 | FALSE), /* pcrel_offset */ | |
1094 | ||
1095 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1096 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1097 | 0, /* rightshift */ | |
1098 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1099 | 16, /* bitsize */ | |
1100 | FALSE, /* pc_relative */ | |
1101 | 0, /* bitpos */ | |
1102 | complain_overflow_signed, /* complain_on_overflow */ | |
1103 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1104 | "R_PPC64_GOT16_DS", /* name */ | |
1105 | FALSE, /* partial_inplace */ | |
1106 | 0, /* src_mask */ | |
1107 | 0xfffc, /* dst_mask */ | |
1108 | FALSE), /* pcrel_offset */ | |
1109 | ||
1110 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1111 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1112 | 0, /* rightshift */ | |
1113 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1114 | 16, /* bitsize */ | |
1115 | FALSE, /* pc_relative */ | |
1116 | 0, /* bitpos */ | |
1117 | complain_overflow_dont, /* complain_on_overflow */ | |
1118 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1119 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1120 | FALSE, /* partial_inplace */ | |
1121 | 0, /* src_mask */ | |
1122 | 0xfffc, /* dst_mask */ | |
1123 | FALSE), /* pcrel_offset */ | |
1124 | ||
1125 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1126 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1127 | 0, /* rightshift */ | |
1128 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1129 | 16, /* bitsize */ | |
1130 | FALSE, /* pc_relative */ | |
1131 | 0, /* bitpos */ | |
1132 | complain_overflow_dont, /* complain_on_overflow */ | |
1133 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1134 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1135 | FALSE, /* partial_inplace */ | |
1136 | 0, /* src_mask */ | |
1137 | 0xfffc, /* dst_mask */ | |
1138 | FALSE), /* pcrel_offset */ | |
1139 | ||
1140 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1141 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1142 | 0, /* rightshift */ | |
1143 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1144 | 16, /* bitsize */ | |
1145 | FALSE, /* pc_relative */ | |
1146 | 0, /* bitpos */ | |
1147 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1148 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1149 | "R_PPC64_SECTOFF_DS", /* name */ | |
1150 | FALSE, /* partial_inplace */ | |
1151 | 0, /* src_mask */ | |
1152 | 0xfffc, /* dst_mask */ | |
1153 | FALSE), /* pcrel_offset */ | |
1154 | ||
1155 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1156 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1157 | 0, /* rightshift */ | |
1158 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1159 | 16, /* bitsize */ | |
1160 | FALSE, /* pc_relative */ | |
1161 | 0, /* bitpos */ | |
1162 | complain_overflow_dont, /* complain_on_overflow */ | |
1163 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1164 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1165 | FALSE, /* partial_inplace */ | |
1166 | 0, /* src_mask */ | |
1167 | 0xfffc, /* dst_mask */ | |
1168 | FALSE), /* pcrel_offset */ | |
1169 | ||
1170 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1171 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1172 | 0, /* rightshift */ | |
1173 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1174 | 16, /* bitsize */ | |
1175 | FALSE, /* pc_relative */ | |
1176 | 0, /* bitpos */ | |
1177 | complain_overflow_signed, /* complain_on_overflow */ | |
1178 | ppc64_elf_toc_reloc, /* special_function */ | |
1179 | "R_PPC64_TOC16_DS", /* name */ | |
1180 | FALSE, /* partial_inplace */ | |
1181 | 0, /* src_mask */ | |
1182 | 0xfffc, /* dst_mask */ | |
1183 | FALSE), /* pcrel_offset */ | |
1184 | ||
1185 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1186 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1187 | 0, /* rightshift */ | |
1188 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1189 | 16, /* bitsize */ | |
1190 | FALSE, /* pc_relative */ | |
1191 | 0, /* bitpos */ | |
1192 | complain_overflow_dont, /* complain_on_overflow */ | |
1193 | ppc64_elf_toc_reloc, /* special_function */ | |
1194 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1195 | FALSE, /* partial_inplace */ | |
1196 | 0, /* src_mask */ | |
1197 | 0xfffc, /* dst_mask */ | |
1198 | FALSE), /* pcrel_offset */ | |
1199 | ||
1200 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1201 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1202 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1203 | 0, /* rightshift */ |
1204 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1205 | 16, /* bitsize */ | |
1206 | FALSE, /* pc_relative */ | |
1207 | 0, /* bitpos */ | |
1208 | complain_overflow_signed, /* complain_on_overflow */ | |
1209 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1210 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1211 | FALSE, /* partial_inplace */ | |
1212 | 0, /* src_mask */ | |
1213 | 0xfffc, /* dst_mask */ | |
1214 | FALSE), /* pcrel_offset */ | |
1215 | ||
1216 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1217 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1218 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1219 | 0, /* rightshift */ | |
1220 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1221 | 16, /* bitsize */ | |
1222 | FALSE, /* pc_relative */ | |
1223 | 0, /* bitpos */ | |
1224 | complain_overflow_dont, /* complain_on_overflow */ | |
1225 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1226 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1227 | FALSE, /* partial_inplace */ | |
1228 | 0, /* src_mask */ | |
1229 | 0xfffc, /* dst_mask */ | |
1230 | FALSE), /* pcrel_offset */ | |
1231 | ||
1232 | /* Marker reloc for TLS. */ | |
1233 | HOWTO (R_PPC64_TLS, | |
1234 | 0, /* rightshift */ | |
1235 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1236 | 32, /* bitsize */ | |
1237 | FALSE, /* pc_relative */ | |
1238 | 0, /* bitpos */ | |
1239 | complain_overflow_dont, /* complain_on_overflow */ | |
1240 | bfd_elf_generic_reloc, /* special_function */ | |
1241 | "R_PPC64_TLS", /* name */ | |
1242 | FALSE, /* partial_inplace */ | |
1243 | 0, /* src_mask */ | |
1244 | 0, /* dst_mask */ | |
1245 | FALSE), /* pcrel_offset */ | |
1246 | ||
1247 | /* Computes the load module index of the load module that contains the | |
1248 | definition of its TLS sym. */ | |
1249 | HOWTO (R_PPC64_DTPMOD64, | |
1250 | 0, /* rightshift */ | |
1251 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1252 | 64, /* bitsize */ | |
1253 | FALSE, /* pc_relative */ | |
1254 | 0, /* bitpos */ | |
1255 | complain_overflow_dont, /* complain_on_overflow */ | |
1256 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1257 | "R_PPC64_DTPMOD64", /* name */ | |
1258 | FALSE, /* partial_inplace */ | |
1259 | 0, /* src_mask */ | |
1260 | ONES (64), /* dst_mask */ | |
1261 | FALSE), /* pcrel_offset */ | |
1262 | ||
1263 | /* Computes a dtv-relative displacement, the difference between the value | |
1264 | of sym+add and the base address of the thread-local storage block that | |
1265 | contains the definition of sym, minus 0x8000. */ | |
1266 | HOWTO (R_PPC64_DTPREL64, | |
1267 | 0, /* rightshift */ | |
1268 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1269 | 64, /* bitsize */ | |
1270 | FALSE, /* pc_relative */ | |
1271 | 0, /* bitpos */ | |
1272 | complain_overflow_dont, /* complain_on_overflow */ | |
1273 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1274 | "R_PPC64_DTPREL64", /* name */ | |
1275 | FALSE, /* partial_inplace */ | |
1276 | 0, /* src_mask */ | |
1277 | ONES (64), /* dst_mask */ | |
1278 | FALSE), /* pcrel_offset */ | |
1279 | ||
1280 | /* A 16 bit dtprel reloc. */ | |
1281 | HOWTO (R_PPC64_DTPREL16, | |
1282 | 0, /* rightshift */ | |
1283 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 16, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 0, /* bitpos */ | |
1287 | complain_overflow_signed, /* complain_on_overflow */ | |
1288 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1289 | "R_PPC64_DTPREL16", /* name */ | |
1290 | FALSE, /* partial_inplace */ | |
1291 | 0, /* src_mask */ | |
1292 | 0xffff, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
1295 | /* Like DTPREL16, but no overflow. */ | |
1296 | HOWTO (R_PPC64_DTPREL16_LO, | |
1297 | 0, /* rightshift */ | |
1298 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1299 | 16, /* bitsize */ | |
1300 | FALSE, /* pc_relative */ | |
1301 | 0, /* bitpos */ | |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
1303 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1304 | "R_PPC64_DTPREL16_LO", /* name */ | |
1305 | FALSE, /* partial_inplace */ | |
1306 | 0, /* src_mask */ | |
1307 | 0xffff, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
1310 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1311 | HOWTO (R_PPC64_DTPREL16_HI, | |
1312 | 16, /* rightshift */ | |
1313 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1314 | 16, /* bitsize */ | |
1315 | FALSE, /* pc_relative */ | |
1316 | 0, /* bitpos */ | |
1317 | complain_overflow_dont, /* complain_on_overflow */ | |
1318 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1319 | "R_PPC64_DTPREL16_HI", /* name */ | |
1320 | FALSE, /* partial_inplace */ | |
1321 | 0, /* src_mask */ | |
1322 | 0xffff, /* dst_mask */ | |
1323 | FALSE), /* pcrel_offset */ | |
1324 | ||
1325 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1326 | HOWTO (R_PPC64_DTPREL16_HA, | |
1327 | 16, /* rightshift */ | |
1328 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 16, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1334 | "R_PPC64_DTPREL16_HA", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0, /* src_mask */ | |
1337 | 0xffff, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
1340 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1341 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1342 | 32, /* rightshift */ | |
1343 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1344 | 16, /* bitsize */ | |
1345 | FALSE, /* pc_relative */ | |
1346 | 0, /* bitpos */ | |
1347 | complain_overflow_dont, /* complain_on_overflow */ | |
1348 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1349 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1350 | FALSE, /* partial_inplace */ | |
1351 | 0, /* src_mask */ | |
1352 | 0xffff, /* dst_mask */ | |
1353 | FALSE), /* pcrel_offset */ | |
1354 | ||
1355 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1356 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1357 | 32, /* rightshift */ | |
1358 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1359 | 16, /* bitsize */ | |
1360 | FALSE, /* pc_relative */ | |
1361 | 0, /* bitpos */ | |
1362 | complain_overflow_dont, /* complain_on_overflow */ | |
1363 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1364 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1365 | FALSE, /* partial_inplace */ | |
1366 | 0, /* src_mask */ | |
1367 | 0xffff, /* dst_mask */ | |
1368 | FALSE), /* pcrel_offset */ | |
1369 | ||
1370 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1371 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1372 | 48, /* rightshift */ | |
1373 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 16, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_dont, /* complain_on_overflow */ | |
1378 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1379 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | 0xffff, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
1385 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1386 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1387 | 48, /* rightshift */ | |
1388 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1389 | 16, /* bitsize */ | |
1390 | FALSE, /* pc_relative */ | |
1391 | 0, /* bitpos */ | |
1392 | complain_overflow_dont, /* complain_on_overflow */ | |
1393 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1394 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1395 | FALSE, /* partial_inplace */ | |
1396 | 0, /* src_mask */ | |
1397 | 0xffff, /* dst_mask */ | |
1398 | FALSE), /* pcrel_offset */ | |
1399 | ||
1400 | /* Like DTPREL16, but for insns with a DS field. */ | |
1401 | HOWTO (R_PPC64_DTPREL16_DS, | |
1402 | 0, /* rightshift */ | |
1403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1404 | 16, /* bitsize */ | |
1405 | FALSE, /* pc_relative */ | |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_signed, /* complain_on_overflow */ | |
1408 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1409 | "R_PPC64_DTPREL16_DS", /* name */ | |
1410 | FALSE, /* partial_inplace */ | |
1411 | 0, /* src_mask */ | |
1412 | 0xfffc, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
1414 | ||
1415 | /* Like DTPREL16_DS, but no overflow. */ | |
1416 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1417 | 0, /* rightshift */ | |
1418 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1419 | 16, /* bitsize */ | |
1420 | FALSE, /* pc_relative */ | |
1421 | 0, /* bitpos */ | |
1422 | complain_overflow_dont, /* complain_on_overflow */ | |
1423 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1424 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1425 | FALSE, /* partial_inplace */ | |
1426 | 0, /* src_mask */ | |
1427 | 0xfffc, /* dst_mask */ | |
1428 | FALSE), /* pcrel_offset */ | |
1429 | ||
1430 | /* Computes a tp-relative displacement, the difference between the value of | |
1431 | sym+add and the value of the thread pointer (r13). */ | |
1432 | HOWTO (R_PPC64_TPREL64, | |
1433 | 0, /* rightshift */ | |
1434 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1435 | 64, /* bitsize */ | |
1436 | FALSE, /* pc_relative */ | |
1437 | 0, /* bitpos */ | |
1438 | complain_overflow_dont, /* complain_on_overflow */ | |
1439 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1440 | "R_PPC64_TPREL64", /* name */ | |
1441 | FALSE, /* partial_inplace */ | |
1442 | 0, /* src_mask */ | |
1443 | ONES (64), /* dst_mask */ | |
1444 | FALSE), /* pcrel_offset */ | |
1445 | ||
1446 | /* A 16 bit tprel reloc. */ | |
1447 | HOWTO (R_PPC64_TPREL16, | |
1448 | 0, /* rightshift */ | |
1449 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1450 | 16, /* bitsize */ | |
1451 | FALSE, /* pc_relative */ | |
1452 | 0, /* bitpos */ | |
1453 | complain_overflow_signed, /* complain_on_overflow */ | |
1454 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1455 | "R_PPC64_TPREL16", /* name */ | |
1456 | FALSE, /* partial_inplace */ | |
1457 | 0, /* src_mask */ | |
1458 | 0xffff, /* dst_mask */ | |
1459 | FALSE), /* pcrel_offset */ | |
1460 | ||
1461 | /* Like TPREL16, but no overflow. */ | |
1462 | HOWTO (R_PPC64_TPREL16_LO, | |
1463 | 0, /* rightshift */ | |
1464 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1465 | 16, /* bitsize */ | |
1466 | FALSE, /* pc_relative */ | |
1467 | 0, /* bitpos */ | |
1468 | complain_overflow_dont, /* complain_on_overflow */ | |
1469 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1470 | "R_PPC64_TPREL16_LO", /* name */ | |
1471 | FALSE, /* partial_inplace */ | |
1472 | 0, /* src_mask */ | |
1473 | 0xffff, /* dst_mask */ | |
1474 | FALSE), /* pcrel_offset */ | |
1475 | ||
1476 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1477 | HOWTO (R_PPC64_TPREL16_HI, | |
1478 | 16, /* rightshift */ | |
1479 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1480 | 16, /* bitsize */ | |
1481 | FALSE, /* pc_relative */ | |
1482 | 0, /* bitpos */ | |
1483 | complain_overflow_dont, /* complain_on_overflow */ | |
1484 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1485 | "R_PPC64_TPREL16_HI", /* name */ | |
1486 | FALSE, /* partial_inplace */ | |
1487 | 0, /* src_mask */ | |
1488 | 0xffff, /* dst_mask */ | |
1489 | FALSE), /* pcrel_offset */ | |
1490 | ||
1491 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1492 | HOWTO (R_PPC64_TPREL16_HA, | |
1493 | 16, /* rightshift */ | |
1494 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1495 | 16, /* bitsize */ | |
1496 | FALSE, /* pc_relative */ | |
1497 | 0, /* bitpos */ | |
1498 | complain_overflow_dont, /* complain_on_overflow */ | |
1499 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1500 | "R_PPC64_TPREL16_HA", /* name */ | |
1501 | FALSE, /* partial_inplace */ | |
1502 | 0, /* src_mask */ | |
1503 | 0xffff, /* dst_mask */ | |
1504 | FALSE), /* pcrel_offset */ | |
1505 | ||
1506 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1507 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1508 | 32, /* rightshift */ | |
1509 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1510 | 16, /* bitsize */ | |
1511 | FALSE, /* pc_relative */ | |
1512 | 0, /* bitpos */ | |
1513 | complain_overflow_dont, /* complain_on_overflow */ | |
1514 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1515 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1516 | FALSE, /* partial_inplace */ | |
1517 | 0, /* src_mask */ | |
1518 | 0xffff, /* dst_mask */ | |
1519 | FALSE), /* pcrel_offset */ | |
1520 | ||
1521 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1522 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1523 | 32, /* rightshift */ | |
1524 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1525 | 16, /* bitsize */ | |
1526 | FALSE, /* pc_relative */ | |
1527 | 0, /* bitpos */ | |
1528 | complain_overflow_dont, /* complain_on_overflow */ | |
1529 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1530 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1531 | FALSE, /* partial_inplace */ | |
1532 | 0, /* src_mask */ | |
1533 | 0xffff, /* dst_mask */ | |
1534 | FALSE), /* pcrel_offset */ | |
1535 | ||
1536 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1537 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1538 | 48, /* rightshift */ | |
1539 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1540 | 16, /* bitsize */ | |
1541 | FALSE, /* pc_relative */ | |
1542 | 0, /* bitpos */ | |
1543 | complain_overflow_dont, /* complain_on_overflow */ | |
1544 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1545 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1546 | FALSE, /* partial_inplace */ | |
1547 | 0, /* src_mask */ | |
1548 | 0xffff, /* dst_mask */ | |
1549 | FALSE), /* pcrel_offset */ | |
1550 | ||
1551 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1552 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1553 | 48, /* rightshift */ | |
1554 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1555 | 16, /* bitsize */ | |
1556 | FALSE, /* pc_relative */ | |
1557 | 0, /* bitpos */ | |
1558 | complain_overflow_dont, /* complain_on_overflow */ | |
1559 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1560 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1561 | FALSE, /* partial_inplace */ | |
1562 | 0, /* src_mask */ | |
1563 | 0xffff, /* dst_mask */ | |
1564 | FALSE), /* pcrel_offset */ | |
1565 | ||
1566 | /* Like TPREL16, but for insns with a DS field. */ | |
1567 | HOWTO (R_PPC64_TPREL16_DS, | |
1568 | 0, /* rightshift */ | |
1569 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1570 | 16, /* bitsize */ | |
1571 | FALSE, /* pc_relative */ | |
1572 | 0, /* bitpos */ | |
1573 | complain_overflow_signed, /* complain_on_overflow */ | |
1574 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1575 | "R_PPC64_TPREL16_DS", /* name */ | |
1576 | FALSE, /* partial_inplace */ | |
1577 | 0, /* src_mask */ | |
1578 | 0xfffc, /* dst_mask */ | |
1579 | FALSE), /* pcrel_offset */ | |
1580 | ||
1581 | /* Like TPREL16_DS, but no overflow. */ | |
1582 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1583 | 0, /* rightshift */ | |
1584 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1585 | 16, /* bitsize */ | |
1586 | FALSE, /* pc_relative */ | |
1587 | 0, /* bitpos */ | |
1588 | complain_overflow_dont, /* complain_on_overflow */ | |
1589 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1590 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1591 | FALSE, /* partial_inplace */ | |
1592 | 0, /* src_mask */ | |
1593 | 0xfffc, /* dst_mask */ | |
1594 | FALSE), /* pcrel_offset */ | |
1595 | ||
1596 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1597 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1598 | to the first entry relative to the TOC base (r2). */ | |
1599 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1600 | 0, /* rightshift */ | |
1601 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1602 | 16, /* bitsize */ | |
1603 | FALSE, /* pc_relative */ | |
1604 | 0, /* bitpos */ | |
1605 | complain_overflow_signed, /* complain_on_overflow */ | |
1606 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1607 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1608 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1609 | 0, /* src_mask */ |
1610 | 0xffff, /* dst_mask */ | |
b34976b6 | 1611 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1612 | |
411e1bfb AM |
1613 | /* Like GOT_TLSGD16, but no overflow. */ |
1614 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1615 | 0, /* rightshift */ |
1616 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1617 | 16, /* bitsize */ | |
b34976b6 | 1618 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1619 | 0, /* bitpos */ |
1620 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1621 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1622 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1623 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1624 | 0, /* src_mask */ |
1625 | 0xffff, /* dst_mask */ | |
b34976b6 | 1626 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1627 | |
411e1bfb AM |
1628 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1629 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1630 | 16, /* rightshift */ |
1631 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1632 | 16, /* bitsize */ | |
b34976b6 | 1633 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1634 | 0, /* bitpos */ |
1635 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1636 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1637 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1638 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1639 | 0, /* src_mask */ |
1640 | 0xffff, /* dst_mask */ | |
b34976b6 | 1641 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1642 | |
411e1bfb AM |
1643 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1644 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1645 | 16, /* rightshift */ |
1646 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1647 | 16, /* bitsize */ | |
b34976b6 | 1648 | FALSE, /* pc_relative */ |
5bd4f169 | 1649 | 0, /* bitpos */ |
411e1bfb | 1650 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1651 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1652 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1653 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1654 | 0, /* src_mask */ |
1655 | 0xffff, /* dst_mask */ | |
b34976b6 | 1656 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1657 | |
411e1bfb AM |
1658 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1659 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1660 | first entry relative to the TOC base (r2). */ | |
1661 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1662 | 0, /* rightshift */ |
1663 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1664 | 16, /* bitsize */ | |
b34976b6 | 1665 | FALSE, /* pc_relative */ |
5bd4f169 | 1666 | 0, /* bitpos */ |
411e1bfb AM |
1667 | complain_overflow_signed, /* complain_on_overflow */ |
1668 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1669 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1670 | FALSE, /* partial_inplace */ |
d006db6c | 1671 | 0, /* src_mask */ |
411e1bfb | 1672 | 0xffff, /* dst_mask */ |
b34976b6 | 1673 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1674 | |
411e1bfb AM |
1675 | /* Like GOT_TLSLD16, but no overflow. */ |
1676 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1677 | 0, /* rightshift */ |
1678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1679 | 16, /* bitsize */ | |
b34976b6 | 1680 | FALSE, /* pc_relative */ |
5bd4f169 | 1681 | 0, /* bitpos */ |
411e1bfb AM |
1682 | complain_overflow_dont, /* complain_on_overflow */ |
1683 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1684 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1685 | FALSE, /* partial_inplace */ |
d006db6c | 1686 | 0, /* src_mask */ |
411e1bfb | 1687 | 0xffff, /* dst_mask */ |
b34976b6 | 1688 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1689 | |
411e1bfb AM |
1690 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1691 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1692 | 16, /* rightshift */ | |
5bd4f169 AM |
1693 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1694 | 16, /* bitsize */ | |
b34976b6 | 1695 | FALSE, /* pc_relative */ |
5bd4f169 | 1696 | 0, /* bitpos */ |
411e1bfb | 1697 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1698 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1699 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1700 | FALSE, /* partial_inplace */ |
d006db6c | 1701 | 0, /* src_mask */ |
411e1bfb | 1702 | 0xffff, /* dst_mask */ |
b34976b6 | 1703 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1704 | |
411e1bfb AM |
1705 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1706 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1707 | 16, /* rightshift */ | |
5bd4f169 AM |
1708 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1709 | 16, /* bitsize */ | |
b34976b6 | 1710 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1711 | 0, /* bitpos */ |
1712 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1713 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1714 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1715 | FALSE, /* partial_inplace */ |
d006db6c | 1716 | 0, /* src_mask */ |
411e1bfb | 1717 | 0xffff, /* dst_mask */ |
b34976b6 | 1718 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1719 | |
411e1bfb AM |
1720 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1721 | the offset to the entry relative to the TOC base (r2). */ | |
1722 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1723 | 0, /* rightshift */ |
1724 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1725 | 16, /* bitsize */ | |
b34976b6 | 1726 | FALSE, /* pc_relative */ |
5bd4f169 | 1727 | 0, /* bitpos */ |
411e1bfb | 1728 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1729 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1730 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1731 | FALSE, /* partial_inplace */ |
d006db6c | 1732 | 0, /* src_mask */ |
5bd4f169 | 1733 | 0xfffc, /* dst_mask */ |
b34976b6 | 1734 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1735 | |
411e1bfb AM |
1736 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1737 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1738 | 0, /* rightshift */ |
c061c2d8 AM |
1739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1740 | 16, /* bitsize */ | |
b34976b6 | 1741 | FALSE, /* pc_relative */ |
5bd4f169 | 1742 | 0, /* bitpos */ |
411e1bfb AM |
1743 | complain_overflow_dont, /* complain_on_overflow */ |
1744 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1745 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1746 | FALSE, /* partial_inplace */ |
d006db6c | 1747 | 0, /* src_mask */ |
c061c2d8 | 1748 | 0xfffc, /* dst_mask */ |
b34976b6 | 1749 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1750 | |
411e1bfb AM |
1751 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1752 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1753 | 16, /* rightshift */ | |
5bd4f169 AM |
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 */ | |
411e1bfb AM |
1759 | ppc64_elf_unhandled_reloc, /* special_function */ |
1760 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1761 | FALSE, /* partial_inplace */ |
d006db6c | 1762 | 0, /* src_mask */ |
411e1bfb | 1763 | 0xffff, /* dst_mask */ |
b34976b6 | 1764 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1765 | |
411e1bfb AM |
1766 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1767 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1768 | 16, /* rightshift */ | |
1769 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1770 | 16, /* bitsize */ | |
1771 | FALSE, /* pc_relative */ | |
1772 | 0, /* bitpos */ | |
1773 | complain_overflow_dont, /* complain_on_overflow */ | |
1774 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1775 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1776 | FALSE, /* partial_inplace */ | |
1777 | 0, /* src_mask */ | |
1778 | 0xffff, /* dst_mask */ | |
1779 | FALSE), /* pcrel_offset */ | |
1780 | ||
1781 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1782 | offset to the entry relative to the TOC base (r2). */ | |
1783 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1784 | 0, /* rightshift */ |
1785 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1786 | 16, /* bitsize */ | |
b34976b6 | 1787 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1788 | 0, /* bitpos */ |
1789 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1790 | ppc64_elf_unhandled_reloc, /* special_function */ |
1791 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1792 | FALSE, /* partial_inplace */ |
d006db6c | 1793 | 0, /* src_mask */ |
ad8e1ba5 | 1794 | 0xfffc, /* dst_mask */ |
b34976b6 | 1795 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1796 | |
411e1bfb AM |
1797 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1798 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1799 | 0, /* rightshift */ |
1800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1801 | 16, /* bitsize */ | |
b34976b6 | 1802 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1803 | 0, /* bitpos */ |
1804 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1805 | ppc64_elf_unhandled_reloc, /* special_function */ |
1806 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1807 | FALSE, /* partial_inplace */ |
d006db6c | 1808 | 0, /* src_mask */ |
ad8e1ba5 | 1809 | 0xfffc, /* dst_mask */ |
b34976b6 | 1810 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1811 | |
411e1bfb AM |
1812 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1813 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1814 | 16, /* rightshift */ | |
5bd4f169 AM |
1815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1816 | 16, /* bitsize */ | |
b34976b6 | 1817 | FALSE, /* pc_relative */ |
5bd4f169 | 1818 | 0, /* bitpos */ |
411e1bfb | 1819 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1820 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1821 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1822 | FALSE, /* partial_inplace */ |
d006db6c | 1823 | 0, /* src_mask */ |
411e1bfb | 1824 | 0xffff, /* dst_mask */ |
b34976b6 | 1825 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1826 | |
411e1bfb AM |
1827 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1828 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1829 | 16, /* rightshift */ | |
5bd4f169 AM |
1830 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1831 | 16, /* bitsize */ | |
b34976b6 | 1832 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1833 | 0, /* bitpos */ |
1834 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1835 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1836 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1837 | FALSE, /* partial_inplace */ |
d006db6c | 1838 | 0, /* src_mask */ |
411e1bfb | 1839 | 0xffff, /* dst_mask */ |
b34976b6 | 1840 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1841 | |
1842 | /* GNU extension to record C++ vtable hierarchy. */ | |
1843 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1844 | 0, /* rightshift */ | |
1845 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1846 | 0, /* bitsize */ | |
b34976b6 | 1847 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1848 | 0, /* bitpos */ |
1849 | complain_overflow_dont, /* complain_on_overflow */ | |
1850 | NULL, /* special_function */ | |
1851 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1852 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1853 | 0, /* src_mask */ |
1854 | 0, /* dst_mask */ | |
b34976b6 | 1855 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1856 | |
1857 | /* GNU extension to record C++ vtable member usage. */ | |
1858 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1859 | 0, /* rightshift */ | |
1860 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1861 | 0, /* bitsize */ | |
b34976b6 | 1862 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1863 | 0, /* bitpos */ |
1864 | complain_overflow_dont, /* complain_on_overflow */ | |
1865 | NULL, /* special_function */ | |
1866 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1867 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1868 | 0, /* src_mask */ |
1869 | 0, /* dst_mask */ | |
b34976b6 | 1870 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1871 | }; |
1872 | ||
1873 | \f | |
1874 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1875 | be done. */ | |
1876 | ||
1877 | static void | |
4ce794b7 | 1878 | ppc_howto_init (void) |
5bd4f169 AM |
1879 | { |
1880 | unsigned int i, type; | |
1881 | ||
1882 | for (i = 0; | |
1883 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1884 | i++) | |
1885 | { | |
1886 | type = ppc64_elf_howto_raw[i].type; | |
1887 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1888 | / sizeof (ppc64_elf_howto_table[0]))); | |
1889 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | static reloc_howto_type * | |
4ce794b7 AM |
1894 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1895 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1896 | { |
411e1bfb | 1897 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1898 | |
1899 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1900 | /* Initialize howto table if needed. */ | |
1901 | ppc_howto_init (); | |
1902 | ||
4ce794b7 | 1903 | switch (code) |
5bd4f169 AM |
1904 | { |
1905 | default: | |
4ce794b7 | 1906 | return NULL; |
5bd4f169 | 1907 | |
411e1bfb AM |
1908 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1909 | break; | |
1910 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1911 | break; | |
1912 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1913 | break; | |
1914 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1915 | break; | |
1916 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1917 | break; | |
1918 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1919 | break; | |
1920 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1921 | break; |
411e1bfb | 1922 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1923 | break; |
411e1bfb | 1924 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1925 | break; |
411e1bfb | 1926 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1927 | break; |
411e1bfb | 1928 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1929 | break; |
411e1bfb | 1930 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1931 | break; |
411e1bfb | 1932 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1933 | break; |
411e1bfb | 1934 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1935 | break; |
411e1bfb | 1936 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1937 | break; |
411e1bfb | 1938 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1939 | break; |
411e1bfb | 1940 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1941 | break; |
411e1bfb | 1942 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1943 | break; |
411e1bfb | 1944 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1945 | break; |
411e1bfb | 1946 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1947 | break; |
411e1bfb | 1948 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1949 | break; |
411e1bfb | 1950 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1951 | break; |
411e1bfb | 1952 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1953 | break; |
411e1bfb | 1954 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1955 | break; |
411e1bfb | 1956 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1957 | break; |
411e1bfb | 1958 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1959 | break; |
411e1bfb | 1960 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1961 | break; |
411e1bfb | 1962 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1963 | break; |
411e1bfb | 1964 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1965 | break; |
411e1bfb | 1966 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1967 | break; |
411e1bfb | 1968 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1969 | break; |
411e1bfb | 1970 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1971 | break; |
411e1bfb | 1972 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1973 | break; |
411e1bfb | 1974 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1975 | break; |
411e1bfb | 1976 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1977 | break; |
411e1bfb | 1978 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1979 | break; |
411e1bfb | 1980 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1981 | break; |
411e1bfb | 1982 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1983 | break; |
411e1bfb | 1984 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1985 | break; |
411e1bfb | 1986 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1987 | break; |
411e1bfb | 1988 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1989 | break; |
411e1bfb | 1990 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1991 | break; |
411e1bfb | 1992 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1993 | break; |
411e1bfb | 1994 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1995 | break; |
411e1bfb | 1996 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1997 | break; |
411e1bfb | 1998 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1999 | break; |
411e1bfb | 2000 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2001 | break; |
411e1bfb | 2002 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2003 | break; |
411e1bfb | 2004 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2005 | break; |
411e1bfb | 2006 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2007 | break; |
411e1bfb | 2008 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2009 | break; |
411e1bfb | 2010 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2011 | break; |
411e1bfb | 2012 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2013 | break; |
411e1bfb | 2014 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2015 | break; |
411e1bfb | 2016 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2017 | break; |
411e1bfb | 2018 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2019 | break; |
411e1bfb | 2020 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2021 | break; |
411e1bfb | 2022 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2023 | break; |
411e1bfb | 2024 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2025 | break; |
411e1bfb | 2026 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2027 | break; |
411e1bfb | 2028 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2029 | break; |
411e1bfb | 2030 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2031 | break; |
411e1bfb | 2032 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2033 | break; |
411e1bfb | 2034 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2035 | break; |
411e1bfb | 2036 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2037 | break; |
411e1bfb | 2038 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2039 | break; |
411e1bfb AM |
2040 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2041 | break; | |
2042 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2043 | break; | |
2044 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2045 | break; | |
2046 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2047 | break; | |
2048 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2049 | break; | |
2050 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2051 | break; | |
2052 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2053 | break; | |
2054 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2055 | break; | |
2056 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2057 | break; | |
2058 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2059 | break; | |
2060 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2061 | break; | |
2062 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2063 | break; | |
2064 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2065 | break; | |
2066 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2067 | break; | |
2068 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2069 | break; | |
2070 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2071 | break; | |
2072 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2073 | break; | |
2074 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2075 | break; | |
2076 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2077 | break; | |
2078 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2079 | break; | |
2080 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2081 | break; | |
2082 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2083 | break; | |
2084 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2085 | break; | |
2086 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2087 | break; | |
2088 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2089 | break; | |
2090 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2091 | break; | |
2092 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2093 | break; | |
2094 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2095 | break; | |
2096 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2097 | break; | |
2098 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2099 | break; | |
2100 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2101 | break; | |
2102 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2103 | break; | |
2104 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2105 | break; | |
2106 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2107 | break; | |
2108 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2109 | break; |
2110 | } | |
2111 | ||
4ce794b7 | 2112 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2113 | }; |
2114 | ||
157090f7 AM |
2115 | static reloc_howto_type * |
2116 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2117 | const char *r_name) | |
2118 | { | |
2119 | unsigned int i; | |
2120 | ||
2121 | for (i = 0; | |
2122 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2123 | i++) | |
2124 | if (ppc64_elf_howto_raw[i].name != NULL | |
2125 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2126 | return &ppc64_elf_howto_raw[i]; | |
2127 | ||
2128 | return NULL; | |
2129 | } | |
2130 | ||
5bd4f169 AM |
2131 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2132 | ||
2133 | static void | |
4ce794b7 AM |
2134 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2135 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2136 | { |
65f38f15 AM |
2137 | unsigned int type; |
2138 | ||
ef60b7ff | 2139 | /* Initialize howto table if needed. */ |
5bd4f169 | 2140 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2141 | ppc_howto_init (); |
2142 | ||
65f38f15 | 2143 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2144 | if (type >= (sizeof (ppc64_elf_howto_table) |
2145 | / sizeof (ppc64_elf_howto_table[0]))) | |
2146 | { | |
2147 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2148 | abfd, (int) type); |
2149 | type = R_PPC64_NONE; | |
d0fb9a8d | 2150 | } |
65f38f15 | 2151 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2152 | } |
2153 | ||
04c9666a | 2154 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2155 | |
2156 | static bfd_reloc_status_type | |
4ce794b7 AM |
2157 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2158 | void *data, asection *input_section, | |
2159 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2160 | { |
805fc799 AM |
2161 | /* If this is a relocatable link (output_bfd test tells us), just |
2162 | call the generic function. Any adjustment will be done at final | |
2163 | link time. */ | |
2164 | if (output_bfd != NULL) | |
cedb70c5 | 2165 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2166 | input_section, output_bfd, error_message); |
2167 | ||
2168 | /* Adjust the addend for sign extension of the low 16 bits. | |
2169 | We won't actually be using the low 16 bits, so trashing them | |
2170 | doesn't matter. */ | |
2171 | reloc_entry->addend += 0x8000; | |
2172 | return bfd_reloc_continue; | |
2173 | } | |
5bd4f169 | 2174 | |
2441e016 AM |
2175 | static bfd_reloc_status_type |
2176 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2177 | void *data, asection *input_section, | |
2178 | bfd *output_bfd, char **error_message) | |
2179 | { | |
2180 | if (output_bfd != NULL) | |
2181 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2182 | input_section, output_bfd, error_message); | |
2183 | ||
699733f6 AM |
2184 | if (strcmp (symbol->section->name, ".opd") == 0 |
2185 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2186 | { |
2187 | bfd_vma dest = opd_entry_value (symbol->section, | |
2188 | symbol->value + reloc_entry->addend, | |
2189 | NULL, NULL); | |
2190 | if (dest != (bfd_vma) -1) | |
2191 | reloc_entry->addend = dest - (symbol->value | |
2192 | + symbol->section->output_section->vma | |
2193 | + symbol->section->output_offset); | |
2194 | } | |
2195 | return bfd_reloc_continue; | |
2196 | } | |
2197 | ||
805fc799 | 2198 | static bfd_reloc_status_type |
4ce794b7 AM |
2199 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2200 | void *data, asection *input_section, | |
2201 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2202 | { |
2203 | long insn; | |
04c9666a | 2204 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2205 | bfd_size_type octets; |
2206 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2207 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2208 | |
2209 | /* If this is a relocatable link (output_bfd test tells us), just | |
2210 | call the generic function. Any adjustment will be done at final | |
2211 | link time. */ | |
5bd4f169 | 2212 | if (output_bfd != NULL) |
cedb70c5 | 2213 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2214 | input_section, output_bfd, error_message); |
2215 | ||
2216 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2217 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2218 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2219 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2220 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2221 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2222 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2223 | |
2224 | if (is_power4) | |
5bd4f169 | 2225 | { |
805fc799 AM |
2226 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2227 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2228 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2229 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2230 | insn |= 0x02 << 21; | |
2231 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2232 | insn |= 0x08 << 21; | |
2233 | else | |
2441e016 | 2234 | goto out; |
5bd4f169 | 2235 | } |
805fc799 AM |
2236 | else |
2237 | { | |
2238 | bfd_vma target = 0; | |
2239 | bfd_vma from; | |
5bd4f169 | 2240 | |
805fc799 AM |
2241 | if (!bfd_is_com_section (symbol->section)) |
2242 | target = symbol->value; | |
2243 | target += symbol->section->output_section->vma; | |
2244 | target += symbol->section->output_offset; | |
2245 | target += reloc_entry->addend; | |
5bd4f169 | 2246 | |
805fc799 AM |
2247 | from = (reloc_entry->address |
2248 | + input_section->output_offset | |
2249 | + input_section->output_section->vma); | |
5bd4f169 | 2250 | |
805fc799 AM |
2251 | /* Invert 'y' bit if not the default. */ |
2252 | if ((bfd_signed_vma) (target - from) < 0) | |
2253 | insn ^= 0x01 << 21; | |
2254 | } | |
4ce794b7 | 2255 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2256 | out: |
2257 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2258 | input_section, output_bfd, error_message); | |
805fc799 | 2259 | } |
5bd4f169 | 2260 | |
805fc799 | 2261 | static bfd_reloc_status_type |
4ce794b7 AM |
2262 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2263 | void *data, asection *input_section, | |
2264 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2265 | { |
2266 | /* If this is a relocatable link (output_bfd test tells us), just | |
2267 | call the generic function. Any adjustment will be done at final | |
2268 | link time. */ | |
2269 | if (output_bfd != NULL) | |
cedb70c5 | 2270 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2271 | input_section, output_bfd, error_message); |
5bd4f169 | 2272 | |
805fc799 AM |
2273 | /* Subtract the symbol section base address. */ |
2274 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2275 | return bfd_reloc_continue; |
2276 | } | |
2277 | ||
805fc799 | 2278 | static bfd_reloc_status_type |
4ce794b7 AM |
2279 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2280 | void *data, asection *input_section, | |
2281 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2282 | { |
2283 | /* If this is a relocatable link (output_bfd test tells us), just | |
2284 | call the generic function. Any adjustment will be done at final | |
2285 | link time. */ | |
2286 | if (output_bfd != NULL) | |
cedb70c5 | 2287 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2288 | input_section, output_bfd, error_message); |
2289 | ||
2290 | /* Subtract the symbol section base address. */ | |
2291 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2292 | ||
2293 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2294 | reloc_entry->addend += 0x8000; | |
2295 | return bfd_reloc_continue; | |
2296 | } | |
2297 | ||
2298 | static bfd_reloc_status_type | |
4ce794b7 AM |
2299 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2300 | void *data, asection *input_section, | |
2301 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2302 | { |
2303 | bfd_vma TOCstart; | |
2304 | ||
2305 | /* If this is a relocatable link (output_bfd test tells us), just | |
2306 | call the generic function. Any adjustment will be done at final | |
2307 | link time. */ | |
2308 | if (output_bfd != NULL) | |
cedb70c5 | 2309 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2310 | input_section, output_bfd, error_message); |
2311 | ||
2312 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2313 | if (TOCstart == 0) | |
2314 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2315 | ||
2316 | /* Subtract the TOC base address. */ | |
2317 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2318 | return bfd_reloc_continue; | |
2319 | } | |
2320 | ||
2321 | static bfd_reloc_status_type | |
4ce794b7 AM |
2322 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2323 | void *data, asection *input_section, | |
2324 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2325 | { |
2326 | bfd_vma TOCstart; | |
2327 | ||
2328 | /* If this is a relocatable link (output_bfd test tells us), just | |
2329 | call the generic function. Any adjustment will be done at final | |
2330 | link time. */ | |
2331 | if (output_bfd != NULL) | |
cedb70c5 | 2332 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2333 | input_section, output_bfd, error_message); |
2334 | ||
2335 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2336 | if (TOCstart == 0) | |
2337 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2338 | ||
2339 | /* Subtract the TOC base address. */ | |
2340 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2341 | ||
2342 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2343 | reloc_entry->addend += 0x8000; | |
2344 | return bfd_reloc_continue; | |
2345 | } | |
2346 | ||
2347 | static bfd_reloc_status_type | |
4ce794b7 AM |
2348 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2349 | void *data, asection *input_section, | |
2350 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2351 | { |
2352 | bfd_vma TOCstart; | |
2353 | bfd_size_type octets; | |
2354 | ||
2355 | /* If this is a relocatable link (output_bfd test tells us), just | |
2356 | call the generic function. Any adjustment will be done at final | |
2357 | link time. */ | |
2358 | if (output_bfd != NULL) | |
cedb70c5 | 2359 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2360 | input_section, output_bfd, error_message); |
2361 | ||
2362 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2363 | if (TOCstart == 0) | |
2364 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2365 | ||
2366 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2367 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2368 | return bfd_reloc_ok; | |
2369 | } | |
2370 | ||
2371 | static bfd_reloc_status_type | |
4ce794b7 AM |
2372 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2373 | void *data, asection *input_section, | |
2374 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2375 | { |
2376 | /* If this is a relocatable link (output_bfd test tells us), just | |
2377 | call the generic function. Any adjustment will be done at final | |
2378 | link time. */ | |
2379 | if (output_bfd != NULL) | |
cedb70c5 | 2380 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2381 | input_section, output_bfd, error_message); |
2382 | ||
2383 | if (error_message != NULL) | |
2384 | { | |
2385 | static char buf[60]; | |
2386 | sprintf (buf, "generic linker can't handle %s", | |
2387 | reloc_entry->howto->name); | |
2388 | *error_message = buf; | |
2389 | } | |
2390 | return bfd_reloc_dangerous; | |
2391 | } | |
2392 | ||
e717da7e AM |
2393 | struct ppc64_elf_obj_tdata |
2394 | { | |
2395 | struct elf_obj_tdata elf; | |
2396 | ||
2397 | /* Shortcuts to dynamic linker sections. */ | |
2398 | asection *got; | |
2399 | asection *relgot; | |
2400 | ||
b3fac117 AM |
2401 | /* Used during garbage collection. We attach global symbols defined |
2402 | on removed .opd entries to this section so that the sym is removed. */ | |
2403 | asection *deleted_section; | |
81688140 | 2404 | |
e717da7e AM |
2405 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2406 | sections means we potentially need one of these for each input bfd. */ | |
2407 | union { | |
2408 | bfd_signed_vma refcount; | |
2409 | bfd_vma offset; | |
2410 | } tlsld_got; | |
8860955f AM |
2411 | |
2412 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2413 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2414 | }; |
2415 | ||
2416 | #define ppc64_elf_tdata(bfd) \ | |
2417 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2418 | ||
2419 | #define ppc64_tlsld_got(bfd) \ | |
2420 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2421 | ||
2422 | /* Override the generic function because we store some extras. */ | |
2423 | ||
2424 | static bfd_boolean | |
2425 | ppc64_elf_mkobject (bfd *abfd) | |
2426 | { | |
e717da7e | 2427 | if (abfd->tdata.any == NULL) |
62d7a5f6 AM |
2428 | { |
2429 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2430 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2431 | if (abfd->tdata.any == NULL) | |
2432 | return FALSE; | |
2433 | } | |
2434 | return bfd_elf_mkobject (abfd); | |
e717da7e AM |
2435 | } |
2436 | ||
ee75fd95 AM |
2437 | /* Return 1 if target is one of ours. */ |
2438 | ||
7b53ace3 | 2439 | static bfd_boolean |
ee75fd95 | 2440 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2441 | { |
2442 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2443 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2444 | ||
2445 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2446 | } | |
2447 | ||
feee612b AM |
2448 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2449 | default is 32 bit. */ | |
2450 | ||
b34976b6 | 2451 | static bfd_boolean |
4ce794b7 | 2452 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2453 | { |
2454 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2455 | { | |
2456 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2457 | ||
2458 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2459 | { | |
2460 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2461 | abfd->arch_info = abfd->arch_info->next; | |
2462 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2463 | } | |
2464 | } | |
b34976b6 | 2465 | return TRUE; |
feee612b AM |
2466 | } |
2467 | ||
d37c89e5 AM |
2468 | /* Support for core dump NOTE sections. */ |
2469 | ||
2470 | static bfd_boolean | |
2471 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2472 | { | |
eea6121a | 2473 | size_t offset, size; |
d37c89e5 AM |
2474 | |
2475 | if (note->descsz != 504) | |
2476 | return FALSE; | |
2477 | ||
2478 | /* pr_cursig */ | |
2479 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2480 | ||
2481 | /* pr_pid */ | |
2482 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2483 | ||
2484 | /* pr_reg */ | |
2485 | offset = 112; | |
eea6121a | 2486 | size = 384; |
d37c89e5 AM |
2487 | |
2488 | /* Make a ".reg/999" section. */ | |
2489 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2490 | size, note->descpos + offset); |
d37c89e5 AM |
2491 | } |
2492 | ||
2493 | static bfd_boolean | |
2494 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2495 | { | |
2496 | if (note->descsz != 136) | |
2497 | return FALSE; | |
2498 | ||
2499 | elf_tdata (abfd)->core_program | |
2500 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2501 | elf_tdata (abfd)->core_command | |
2502 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2503 | ||
2504 | return TRUE; | |
2505 | } | |
2506 | ||
183e98be AM |
2507 | static char * |
2508 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2509 | ...) | |
2510 | { | |
2511 | switch (note_type) | |
2512 | { | |
2513 | default: | |
2514 | return NULL; | |
2515 | ||
2516 | case NT_PRPSINFO: | |
2517 | { | |
2518 | char data[136]; | |
2519 | va_list ap; | |
2520 | ||
2521 | va_start (ap, note_type); | |
2522 | memset (data, 0, 40); | |
2523 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2524 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2525 | va_end (ap); | |
2526 | return elfcore_write_note (abfd, buf, bufsiz, | |
2527 | "CORE", note_type, data, sizeof (data)); | |
2528 | } | |
2529 | ||
2530 | case NT_PRSTATUS: | |
2531 | { | |
2532 | char data[504]; | |
2533 | va_list ap; | |
2534 | long pid; | |
2535 | int cursig; | |
2536 | const void *greg; | |
2537 | ||
2538 | va_start (ap, note_type); | |
2539 | memset (data, 0, 112); | |
2540 | pid = va_arg (ap, long); | |
2541 | bfd_put_32 (abfd, pid, data + 32); | |
2542 | cursig = va_arg (ap, int); | |
2543 | bfd_put_16 (abfd, cursig, data + 12); | |
2544 | greg = va_arg (ap, const void *); | |
2545 | memcpy (data + 112, greg, 384); | |
2546 | memset (data + 496, 0, 8); | |
2547 | va_end (ap); | |
2548 | return elfcore_write_note (abfd, buf, bufsiz, | |
2549 | "CORE", note_type, data, sizeof (data)); | |
2550 | } | |
2551 | } | |
2552 | } | |
2553 | ||
5bd4f169 AM |
2554 | /* Merge backend specific data from an object file to the output |
2555 | object file when linking. */ | |
2f6d9989 | 2556 | |
b34976b6 | 2557 | static bfd_boolean |
4ce794b7 | 2558 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2559 | { |
5bd4f169 AM |
2560 | /* Check if we have the same endianess. */ |
2561 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2562 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2563 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2564 | { | |
2565 | const char *msg; | |
2566 | ||
2567 | if (bfd_big_endian (ibfd)) | |
d003868e | 2568 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2569 | "and target is little endian"); |
5bd4f169 | 2570 | else |
d003868e | 2571 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2572 | "and target is big endian"); |
5bd4f169 | 2573 | |
d003868e | 2574 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2575 | |
2576 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2577 | return FALSE; |
5bd4f169 AM |
2578 | } |
2579 | ||
b34976b6 | 2580 | return TRUE; |
5bd4f169 | 2581 | } |
f0abc2a1 | 2582 | |
5d35169e AM |
2583 | /* Add extra PPC sections. */ |
2584 | ||
b35d266b | 2585 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2586 | { |
0112cd26 NC |
2587 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2588 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2589 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2590 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2591 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2592 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2593 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2594 | }; |
2595 | ||
7c8fe5c4 AM |
2596 | enum _ppc64_sec_type { |
2597 | sec_normal = 0, | |
2598 | sec_opd = 1, | |
2599 | sec_toc = 2 | |
2600 | }; | |
2601 | ||
f0abc2a1 AM |
2602 | struct _ppc64_elf_section_data |
2603 | { | |
2604 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2605 | |
2606 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2607 | union |
2608 | { | |
411e1bfb | 2609 | /* Points to the function code section for local opd entries. */ |
7c8fe5c4 | 2610 | asection **opd_func_sec; |
411e1bfb | 2611 | /* After editing .opd, adjust references to opd local syms. */ |
7c8fe5c4 AM |
2612 | long *opd_adjust; |
2613 | ||
2614 | /* An array for toc sections, indexed by offset/8. | |
2615 | Specifies the relocation symbol index used at a given toc offset. */ | |
2616 | unsigned *t_symndx; | |
2617 | } u; | |
2618 | ||
2619 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2620 | |
7c8fe5c4 AM |
2621 | /* Flag set when small branches are detected. Used to |
2622 | select suitable defaults for the stub group size. */ | |
2623 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2624 | }; |
2625 | ||
2626 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2627 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2628 | |
2629 | static bfd_boolean | |
4ce794b7 | 2630 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2631 | { |
f592407e AM |
2632 | if (!sec->used_by_bfd) |
2633 | { | |
2634 | struct _ppc64_elf_section_data *sdata; | |
2635 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2636 | |
f592407e AM |
2637 | sdata = bfd_zalloc (abfd, amt); |
2638 | if (sdata == NULL) | |
2639 | return FALSE; | |
2640 | sec->used_by_bfd = sdata; | |
2641 | } | |
f0abc2a1 AM |
2642 | |
2643 | return _bfd_elf_new_section_hook (abfd, sec); | |
2644 | } | |
4025353c AM |
2645 | |
2646 | static void * | |
2647 | get_opd_info (asection * sec) | |
2648 | { | |
2649 | if (sec != NULL | |
2650 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 AM |
2651 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
2652 | return ppc64_elf_section_data (sec)->u.opd_adjust; | |
4025353c AM |
2653 | return NULL; |
2654 | } | |
90e3cdf2 JJ |
2655 | \f |
2656 | /* Parameters for the qsort hook. */ | |
2657 | static asection *synthetic_opd; | |
2658 | static bfd_boolean synthetic_relocatable; | |
2659 | ||
699733f6 | 2660 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2661 | |
2662 | static int | |
2663 | compare_symbols (const void *ap, const void *bp) | |
2664 | { | |
2665 | const asymbol *a = * (const asymbol **) ap; | |
2666 | const asymbol *b = * (const asymbol **) bp; | |
2667 | ||
699733f6 AM |
2668 | /* Section symbols first. */ |
2669 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2670 | return -1; |
699733f6 | 2671 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2672 | return 1; |
2673 | ||
699733f6 | 2674 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2675 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2676 | return -1; | |
2677 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2678 | return 1; | |
2679 | ||
699733f6 | 2680 | /* then other code symbols. */ |
90e3cdf2 JJ |
2681 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2682 | == (SEC_CODE | SEC_ALLOC) | |
2683 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2684 | != (SEC_CODE | SEC_ALLOC)) | |
2685 | return -1; | |
2686 | ||
2687 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2688 | != (SEC_CODE | SEC_ALLOC) | |
2689 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2690 | == (SEC_CODE | SEC_ALLOC)) | |
2691 | return 1; | |
2692 | ||
2693 | if (synthetic_relocatable) | |
2694 | { | |
2695 | if (a->section->id < b->section->id) | |
2696 | return -1; | |
2697 | ||
2698 | if (a->section->id > b->section->id) | |
2699 | return 1; | |
2700 | } | |
2701 | ||
2702 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2703 | return -1; | |
2704 | ||
2705 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2706 | return 1; | |
2707 | ||
4d35a0aa AM |
2708 | /* For syms with the same value, prefer strong dynamic global function |
2709 | syms over other syms. */ | |
2710 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2711 | return -1; | |
2712 | ||
2713 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2714 | return 1; | |
2715 | ||
2716 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2717 | return -1; | |
2718 | ||
2719 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2720 | return 1; | |
2721 | ||
2722 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2723 | return -1; | |
2724 | ||
2725 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2726 | return 1; | |
2727 | ||
2728 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2729 | return -1; | |
2730 | ||
2731 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2732 | return 1; | |
2733 | ||
90e3cdf2 JJ |
2734 | return 0; |
2735 | } | |
2736 | ||
699733f6 | 2737 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2738 | |
699733f6 AM |
2739 | static asymbol * |
2740 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2741 | { |
699733f6 | 2742 | long mid; |
90e3cdf2 | 2743 | |
699733f6 AM |
2744 | if (id == -1) |
2745 | { | |
2746 | while (lo < hi) | |
2747 | { | |
2748 | mid = (lo + hi) >> 1; | |
2749 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2750 | lo = mid + 1; | |
2751 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2752 | hi = mid; | |
2753 | else | |
2754 | return syms[mid]; | |
2755 | } | |
2756 | } | |
2757 | else | |
2758 | { | |
2759 | while (lo < hi) | |
2760 | { | |
2761 | mid = (lo + hi) >> 1; | |
2762 | if (syms[mid]->section->id < id) | |
2763 | lo = mid + 1; | |
2764 | else if (syms[mid]->section->id > id) | |
2765 | hi = mid; | |
2766 | else if (syms[mid]->value < value) | |
2767 | lo = mid + 1; | |
2768 | else if (syms[mid]->value > value) | |
2769 | hi = mid; | |
2770 | else | |
2771 | return syms[mid]; | |
2772 | } | |
2773 | } | |
2774 | return NULL; | |
90e3cdf2 JJ |
2775 | } |
2776 | ||
699733f6 AM |
2777 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2778 | entry syms. */ | |
90e3cdf2 JJ |
2779 | |
2780 | static long | |
a7535cf3 AM |
2781 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2782 | long static_count, asymbol **static_syms, | |
2783 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2784 | asymbol **ret) |
90e3cdf2 JJ |
2785 | { |
2786 | asymbol *s; | |
699733f6 AM |
2787 | long i; |
2788 | long count; | |
90e3cdf2 | 2789 | char *names; |
a7535cf3 | 2790 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2791 | asection *opd; |
90e3cdf2 | 2792 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2793 | asymbol **syms; |
90e3cdf2 JJ |
2794 | |
2795 | *ret = NULL; | |
2796 | ||
2797 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2798 | if (opd == NULL) | |
2799 | return 0; | |
2800 | ||
a7535cf3 | 2801 | symcount = static_count; |
c9727e01 | 2802 | if (!relocatable) |
a7535cf3 | 2803 | symcount += dyn_count; |
90e3cdf2 | 2804 | if (symcount == 0) |
c9727e01 | 2805 | return 0; |
90e3cdf2 | 2806 | |
a7535cf3 AM |
2807 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2808 | if (syms == NULL) | |
7356fed5 | 2809 | return -1; |
a7535cf3 AM |
2810 | |
2811 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2812 | { | |
2813 | /* Use both symbol tables. */ | |
2814 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2815 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2816 | } | |
2817 | else if (!relocatable && static_count == 0) | |
2818 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2819 | else | |
2820 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2821 | ||
90e3cdf2 JJ |
2822 | synthetic_opd = opd; |
2823 | synthetic_relocatable = relocatable; | |
595da8c5 | 2824 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2825 | |
c9727e01 AM |
2826 | if (!relocatable && symcount > 1) |
2827 | { | |
2828 | long j; | |
2829 | /* Trim duplicate syms, since we may have merged the normal and | |
2830 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2831 | different values, so trim any with the same value. */ |
c9727e01 AM |
2832 | for (i = 1, j = 1; i < symcount; ++i) |
2833 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2834 | != syms[i]->value + syms[i]->section->vma) | |
2835 | syms[j++] = syms[i]; | |
2836 | symcount = j; | |
2837 | } | |
2838 | ||
699733f6 AM |
2839 | i = 0; |
2840 | if (syms[i]->section == opd) | |
2841 | ++i; | |
2842 | codesecsym = i; | |
90e3cdf2 | 2843 | |
699733f6 AM |
2844 | for (; i < symcount; ++i) |
2845 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2846 | != (SEC_CODE | SEC_ALLOC)) | |
2847 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2848 | break; | |
2849 | codesecsymend = i; | |
90e3cdf2 | 2850 | |
699733f6 AM |
2851 | for (; i < symcount; ++i) |
2852 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2853 | break; | |
2854 | secsymend = i; | |
90e3cdf2 | 2855 | |
699733f6 AM |
2856 | for (; i < symcount; ++i) |
2857 | if (syms[i]->section != opd) | |
2858 | break; | |
2859 | opdsymend = i; | |
90e3cdf2 | 2860 | |
699733f6 AM |
2861 | for (; i < symcount; ++i) |
2862 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2863 | != (SEC_CODE | SEC_ALLOC)) | |
2864 | break; | |
2865 | symcount = i; | |
2866 | ||
c9727e01 | 2867 | count = 0; |
699733f6 | 2868 | if (opdsymend == secsymend) |
c9727e01 | 2869 | goto done; |
90e3cdf2 | 2870 | |
699733f6 | 2871 | if (relocatable) |
90e3cdf2 | 2872 | { |
699733f6 AM |
2873 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2874 | arelent *r; | |
2875 | size_t size; | |
2876 | long relcount; | |
90e3cdf2 | 2877 | |
699733f6 | 2878 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2879 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2880 | if (relcount == 0) |
c9727e01 | 2881 | goto done; |
90e3cdf2 | 2882 | |
7356fed5 AM |
2883 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2884 | { | |
2885 | count = -1; | |
2886 | goto done; | |
2887 | } | |
2888 | ||
699733f6 | 2889 | size = 0; |
595da8c5 | 2890 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2891 | { |
2892 | asymbol *sym; | |
90e3cdf2 | 2893 | |
595da8c5 | 2894 | while (r < opd->relocation + relcount |
699733f6 AM |
2895 | && r->address < syms[i]->value + opd->vma) |
2896 | ++r; | |
90e3cdf2 | 2897 | |
595da8c5 | 2898 | if (r == opd->relocation + relcount) |
699733f6 | 2899 | break; |
90e3cdf2 | 2900 | |
699733f6 AM |
2901 | if (r->address != syms[i]->value + opd->vma) |
2902 | continue; | |
90e3cdf2 | 2903 | |
699733f6 AM |
2904 | if (r->howto->type != R_PPC64_ADDR64) |
2905 | continue; | |
90e3cdf2 | 2906 | |
699733f6 AM |
2907 | sym = *r->sym_ptr_ptr; |
2908 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2909 | sym->section->id, sym->value + r->addend)) | |
2910 | { | |
2911 | ++count; | |
2912 | size += sizeof (asymbol); | |
2913 | size += strlen (syms[i]->name) + 2; | |
2914 | } | |
2915 | } | |
90e3cdf2 | 2916 | |
699733f6 AM |
2917 | s = *ret = bfd_malloc (size); |
2918 | if (s == NULL) | |
2919 | { | |
7356fed5 | 2920 | count = -1; |
c9727e01 | 2921 | goto done; |
699733f6 | 2922 | } |
90e3cdf2 | 2923 | |
699733f6 | 2924 | names = (char *) (s + count); |
90e3cdf2 | 2925 | |
595da8c5 | 2926 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2927 | { |
699733f6 | 2928 | asymbol *sym; |
90e3cdf2 | 2929 | |
595da8c5 | 2930 | while (r < opd->relocation + relcount |
699733f6 AM |
2931 | && r->address < syms[i]->value + opd->vma) |
2932 | ++r; | |
90e3cdf2 | 2933 | |
595da8c5 | 2934 | if (r == opd->relocation + relcount) |
699733f6 AM |
2935 | break; |
2936 | ||
2937 | if (r->address != syms[i]->value + opd->vma) | |
2938 | continue; | |
2939 | ||
2940 | if (r->howto->type != R_PPC64_ADDR64) | |
2941 | continue; | |
90e3cdf2 | 2942 | |
699733f6 AM |
2943 | sym = *r->sym_ptr_ptr; |
2944 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2945 | sym->section->id, sym->value + r->addend)) | |
2946 | { | |
2947 | size_t len; | |
2948 | ||
2949 | *s = *syms[i]; | |
2950 | s->section = sym->section; | |
2951 | s->value = sym->value + r->addend; | |
2952 | s->name = names; | |
2953 | *names++ = '.'; | |
2954 | len = strlen (syms[i]->name); | |
2955 | memcpy (names, syms[i]->name, len + 1); | |
2956 | names += len + 1; | |
2957 | s++; | |
2958 | } | |
2959 | } | |
2960 | } | |
2961 | else | |
90e3cdf2 | 2962 | { |
699733f6 AM |
2963 | bfd_byte *contents; |
2964 | size_t size; | |
90e3cdf2 | 2965 | |
699733f6 AM |
2966 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2967 | { | |
2968 | if (contents) | |
c9727e01 AM |
2969 | { |
2970 | free_contents_and_exit: | |
2971 | free (contents); | |
2972 | } | |
7356fed5 | 2973 | count = -1; |
c9727e01 | 2974 | goto done; |
699733f6 | 2975 | } |
90e3cdf2 | 2976 | |
699733f6 AM |
2977 | size = 0; |
2978 | for (i = secsymend; i < opdsymend; ++i) | |
2979 | { | |
2980 | bfd_vma ent; | |
90e3cdf2 | 2981 | |
699733f6 AM |
2982 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2983 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2984 | { | |
2985 | ++count; | |
2986 | size += sizeof (asymbol); | |
2987 | size += strlen (syms[i]->name) + 2; | |
2988 | } | |
2989 | } | |
90e3cdf2 | 2990 | |
699733f6 AM |
2991 | s = *ret = bfd_malloc (size); |
2992 | if (s == NULL) | |
7356fed5 | 2993 | goto free_contents_and_exit; |
90e3cdf2 | 2994 | |
699733f6 | 2995 | names = (char *) (s + count); |
90e3cdf2 | 2996 | |
699733f6 | 2997 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2998 | { |
699733f6 | 2999 | bfd_vma ent; |
90e3cdf2 | 3000 | |
699733f6 AM |
3001 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3002 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3003 | { |
c9727e01 | 3004 | long lo, hi; |
699733f6 | 3005 | size_t len; |
c9727e01 | 3006 | asection *sec = abfd->sections; |
90e3cdf2 | 3007 | |
699733f6 AM |
3008 | *s = *syms[i]; |
3009 | lo = codesecsym; | |
3010 | hi = codesecsymend; | |
3011 | while (lo < hi) | |
3012 | { | |
c9727e01 | 3013 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3014 | if (syms[mid]->section->vma < ent) |
3015 | lo = mid + 1; | |
3016 | else if (syms[mid]->section->vma > ent) | |
3017 | hi = mid; | |
3018 | else | |
c9727e01 AM |
3019 | { |
3020 | sec = syms[mid]->section; | |
3021 | break; | |
3022 | } | |
699733f6 AM |
3023 | } |
3024 | ||
c9727e01 | 3025 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3026 | sec = syms[lo - 1]->section; |
699733f6 AM |
3027 | |
3028 | for (; sec != NULL; sec = sec->next) | |
3029 | { | |
3030 | if (sec->vma > ent) | |
3031 | break; | |
3032 | if ((sec->flags & SEC_ALLOC) == 0 | |
3033 | || (sec->flags & SEC_LOAD) == 0) | |
3034 | break; | |
3035 | if ((sec->flags & SEC_CODE) != 0) | |
3036 | s->section = sec; | |
3037 | } | |
3038 | s->value = ent - s->section->vma; | |
3039 | s->name = names; | |
3040 | *names++ = '.'; | |
3041 | len = strlen (syms[i]->name); | |
3042 | memcpy (names, syms[i]->name, len + 1); | |
3043 | names += len + 1; | |
3044 | s++; | |
90e3cdf2 | 3045 | } |
90e3cdf2 | 3046 | } |
699733f6 | 3047 | free (contents); |
90e3cdf2 JJ |
3048 | } |
3049 | ||
c9727e01 | 3050 | done: |
a7535cf3 | 3051 | free (syms); |
90e3cdf2 JJ |
3052 | return count; |
3053 | } | |
5bd4f169 | 3054 | \f |
65f38f15 AM |
3055 | /* The following functions are specific to the ELF linker, while |
3056 | functions above are used generally. Those named ppc64_elf_* are | |
3057 | called by the main ELF linker code. They appear in this file more | |
3058 | or less in the order in which they are called. eg. | |
3059 | ppc64_elf_check_relocs is called early in the link process, | |
3060 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3061 | called. |
3062 | ||
3063 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3064 | functions have both a function code symbol and a function descriptor | |
3065 | symbol. A call to foo in a relocatable object file looks like: | |
3066 | ||
3067 | . .text | |
3068 | . x: | |
3069 | . bl .foo | |
3070 | . nop | |
3071 | ||
3072 | The function definition in another object file might be: | |
3073 | ||
3074 | . .section .opd | |
3075 | . foo: .quad .foo | |
3076 | . .quad .TOC.@tocbase | |
3077 | . .quad 0 | |
3078 | . | |
3079 | . .text | |
3080 | . .foo: blr | |
3081 | ||
3082 | When the linker resolves the call during a static link, the branch | |
3083 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3084 | If the function definition is in a shared library, things are a little | |
3085 | different: The call goes via a plt call stub, the opd information gets | |
3086 | copied to the plt, and the linker patches the nop. | |
3087 | ||
3088 | . x: | |
3089 | . bl .foo_stub | |
3090 | . ld 2,40(1) | |
3091 | . | |
3092 | . | |
3093 | . .foo_stub: | |
3094 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3095 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3096 | . std 2,40(1) # this is the general idea |
3097 | . ld 11,0(12) | |
3098 | . ld 2,8(12) | |
3099 | . mtctr 11 | |
3100 | . ld 11,16(12) | |
3101 | . bctr | |
3102 | . | |
3103 | . .section .plt | |
3104 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3105 | ||
3106 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3107 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3108 | copying. | |
3109 | ||
3110 | What are the difficulties here? Well, firstly, the relocations | |
3111 | examined by the linker in check_relocs are against the function code | |
3112 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3113 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3114 | to carefully copy dynamic link information from one symbol to the other. | |
3115 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3116 | symbol as is normal for most other backends. We need foo dynamic | |
3117 | instead, at least for an application final link. However, when | |
3118 | creating a shared library containing foo, we need to have both symbols | |
3119 | dynamic so that references to .foo are satisfied during the early | |
3120 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3121 | definition from some other object, eg. a static library. |
3122 | ||
3123 | Update: As of August 2004, we support a new convention. Function | |
3124 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3125 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3126 | |
3127 | /* The linker needs to keep track of the number of relocs that it | |
3128 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3129 | This is so that it can later discard them if they are found to be | |
3130 | unnecessary. We store the information in a field extending the | |
3131 | regular ELF linker hash table. */ | |
3132 | ||
3133 | struct ppc_dyn_relocs | |
3134 | { | |
3135 | struct ppc_dyn_relocs *next; | |
3136 | ||
3137 | /* The input section of the reloc. */ | |
3138 | asection *sec; | |
3139 | ||
3140 | /* Total number of relocs copied for the input section. */ | |
3141 | bfd_size_type count; | |
3142 | ||
3143 | /* Number of pc-relative relocs copied for the input section. */ | |
3144 | bfd_size_type pc_count; | |
3145 | }; | |
3146 | ||
411e1bfb AM |
3147 | /* Track GOT entries needed for a given symbol. We might need more |
3148 | than one got entry per symbol. */ | |
3149 | struct got_entry | |
3150 | { | |
3151 | struct got_entry *next; | |
3152 | ||
e7b938ca | 3153 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3154 | bfd_vma addend; |
3155 | ||
e717da7e AM |
3156 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3157 | symbol referenced from different input files. This is to support | |
3158 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3159 | from one input file to another. | |
3160 | ||
3161 | Point to the BFD owning this GOT entry. */ | |
3162 | bfd *owner; | |
3163 | ||
3164 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3165 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3166 | char tls_type; | |
3167 | ||
e7b938ca | 3168 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3169 | union |
3170 | { | |
3171 | bfd_signed_vma refcount; | |
3172 | bfd_vma offset; | |
3173 | } got; | |
411e1bfb AM |
3174 | }; |
3175 | ||
3176 | /* The same for PLT. */ | |
3177 | struct plt_entry | |
3178 | { | |
3179 | struct plt_entry *next; | |
3180 | ||
3181 | bfd_vma addend; | |
3182 | ||
3183 | union | |
3184 | { | |
3185 | bfd_signed_vma refcount; | |
3186 | bfd_vma offset; | |
3187 | } plt; | |
3188 | }; | |
3189 | ||
65f38f15 | 3190 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3191 | selects those that must be copied when linking a shared library, |
3192 | even when the symbol is local. */ | |
65f38f15 | 3193 | |
411e1bfb | 3194 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3195 | ((RTYPE) != R_PPC64_REL32 \ |
3196 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3197 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3198 | |
f4656909 AM |
3199 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3200 | copying dynamic variables from a shared lib into an app's dynbss | |
3201 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3202 | shared lib. With code that gcc generates, it's vital that this be |
3203 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3204 | the address of a function descriptor, which resides in the .opd | |
3205 | section. gcc uses the descriptor directly rather than going via the | |
3206 | GOT as some other ABI's do, which means that initialized function | |
3207 | pointers must reference the descriptor. Thus, a function pointer | |
3208 | initialized to the address of a function in a shared library will | |
3209 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3210 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3211 | presents a problem as a plt entry for that function is also |
3212 | initialized from the function descriptor symbol and the copy reloc | |
3213 | may not be initialized first. */ | |
a23b6845 | 3214 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3215 | |
721956f4 AM |
3216 | /* Section name for stubs is the associated section name plus this |
3217 | string. */ | |
3218 | #define STUB_SUFFIX ".stub" | |
3219 | ||
3220 | /* Linker stubs. | |
3221 | ppc_stub_long_branch: | |
3222 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3223 | destination, but a 24 bit branch in a stub section will reach. | |
3224 | . b dest | |
3225 | ||
3226 | ppc_stub_plt_branch: | |
3227 | Similar to the above, but a 24 bit branch in the stub section won't | |
3228 | reach its destination. | |
87e226ce AM |
3229 | . addis %r12,%r2,xxx@toc@ha |
3230 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3231 | . mtctr %r11 |
3232 | . bctr | |
3233 | ||
3234 | ppc_stub_plt_call: | |
2c66dc6c AM |
3235 | Used to call a function in a shared library. If it so happens that |
3236 | the plt entry referenced crosses a 64k boundary, then an extra | |
3237 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3238 | xxx+16 as appropriate. | |
87e226ce | 3239 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3240 | . std %r2,40(%r1) |
87e226ce AM |
3241 | . ld %r11,xxx+0@toc@l(%r12) |
3242 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3243 | . mtctr %r11 |
87e226ce | 3244 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3245 | . bctr |
ad8e1ba5 AM |
3246 | |
3247 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3248 | code to adjust the value and save r2 to support multiple toc sections. | |
3249 | A ppc_stub_long_branch with an r2 offset looks like: | |
3250 | . std %r2,40(%r1) | |
3251 | . addis %r2,%r2,off@ha | |
3252 | . addi %r2,%r2,off@l | |
3253 | . b dest | |
3254 | ||
3255 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3256 | . std %r2,40(%r1) | |
3257 | . addis %r12,%r2,xxx@toc@ha | |
3258 | . ld %r11,xxx@toc@l(%r12) | |
3259 | . addis %r2,%r2,off@ha | |
3260 | . addi %r2,%r2,off@l | |
3261 | . mtctr %r11 | |
3262 | . bctr | |
721956f4 AM |
3263 | */ |
3264 | ||
3265 | enum ppc_stub_type { | |
3266 | ppc_stub_none, | |
3267 | ppc_stub_long_branch, | |
ad8e1ba5 | 3268 | ppc_stub_long_branch_r2off, |
721956f4 | 3269 | ppc_stub_plt_branch, |
ad8e1ba5 | 3270 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3271 | ppc_stub_plt_call |
3272 | }; | |
3273 | ||
3274 | struct ppc_stub_hash_entry { | |
3275 | ||
3276 | /* Base hash table entry structure. */ | |
3277 | struct bfd_hash_entry root; | |
3278 | ||
ad8e1ba5 AM |
3279 | enum ppc_stub_type stub_type; |
3280 | ||
721956f4 AM |
3281 | /* The stub section. */ |
3282 | asection *stub_sec; | |
3283 | ||
3284 | /* Offset within stub_sec of the beginning of this stub. */ | |
3285 | bfd_vma stub_offset; | |
3286 | ||
3287 | /* Given the symbol's value and its section we can determine its final | |
3288 | value when building the stubs (so the stub knows where to jump. */ | |
3289 | bfd_vma target_value; | |
3290 | asection *target_section; | |
3291 | ||
721956f4 AM |
3292 | /* The symbol table entry, if any, that this was derived from. */ |
3293 | struct ppc_link_hash_entry *h; | |
3294 | ||
411e1bfb AM |
3295 | /* And the reloc addend that this was derived from. */ |
3296 | bfd_vma addend; | |
3297 | ||
721956f4 AM |
3298 | /* Where this stub is being called from, or, in the case of combined |
3299 | stub sections, the first input section in the group. */ | |
3300 | asection *id_sec; | |
3301 | }; | |
3302 | ||
3303 | struct ppc_branch_hash_entry { | |
3304 | ||
3305 | /* Base hash table entry structure. */ | |
3306 | struct bfd_hash_entry root; | |
3307 | ||
c456f082 | 3308 | /* Offset within branch lookup table. */ |
721956f4 AM |
3309 | unsigned int offset; |
3310 | ||
3311 | /* Generation marker. */ | |
3312 | unsigned int iter; | |
3313 | }; | |
65f38f15 AM |
3314 | |
3315 | struct ppc_link_hash_entry | |
3316 | { | |
3317 | struct elf_link_hash_entry elf; | |
3318 | ||
b3fac117 AM |
3319 | union { |
3320 | /* A pointer to the most recently used stub hash entry against this | |
3321 | symbol. */ | |
3322 | struct ppc_stub_hash_entry *stub_cache; | |
3323 | ||
3324 | /* A pointer to the next symbol starting with a '.' */ | |
3325 | struct ppc_link_hash_entry *next_dot_sym; | |
3326 | } u; | |
721956f4 | 3327 | |
65f38f15 AM |
3328 | /* Track dynamic relocs copied for this symbol. */ |
3329 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3330 | |
721956f4 | 3331 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3332 | struct ppc_link_hash_entry *oh; |
721956f4 | 3333 | |
e86ce104 AM |
3334 | /* Flag function code and descriptor symbols. */ |
3335 | unsigned int is_func:1; | |
3336 | unsigned int is_func_descriptor:1; | |
908b32fc | 3337 | unsigned int fake:1; |
411e1bfb | 3338 | |
c5614fa4 AM |
3339 | /* Whether global opd/toc sym has been adjusted or not. |
3340 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3341 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3342 | unsigned int adjust_done:1; |
3343 | ||
99877b66 AM |
3344 | /* Set if we twiddled this symbol to weak at some stage. */ |
3345 | unsigned int was_undefined:1; | |
3346 | ||
411e1bfb | 3347 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3348 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3349 | corresponding relocs are encountered during check_relocs. | |
3350 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3351 | indicate the corresponding GOT entry type is not needed. | |
3352 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3353 | a TPREL one. We use a separate flag rather than setting TPREL | |
3354 | just for convenience in distinguishing the two cases. */ | |
3355 | #define TLS_GD 1 /* GD reloc. */ | |
3356 | #define TLS_LD 2 /* LD reloc. */ | |
3357 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3358 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3359 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3360 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3361 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3362 | char tls_mask; | |
65f38f15 AM |
3363 | }; |
3364 | ||
3365 | /* ppc64 ELF linker hash table. */ | |
3366 | ||
3367 | struct ppc_link_hash_table | |
3368 | { | |
3369 | struct elf_link_hash_table elf; | |
3370 | ||
721956f4 AM |
3371 | /* The stub hash table. */ |
3372 | struct bfd_hash_table stub_hash_table; | |
3373 | ||
3374 | /* Another hash table for plt_branch stubs. */ | |
3375 | struct bfd_hash_table branch_hash_table; | |
3376 | ||
3377 | /* Linker stub bfd. */ | |
3378 | bfd *stub_bfd; | |
3379 | ||
3380 | /* Linker call-backs. */ | |
4ce794b7 AM |
3381 | asection * (*add_stub_section) (const char *, asection *); |
3382 | void (*layout_sections_again) (void); | |
721956f4 AM |
3383 | |
3384 | /* Array to keep track of which stub sections have been created, and | |
3385 | information on stub grouping. */ | |
3386 | struct map_stub { | |
3387 | /* This is the section to which stubs in the group will be attached. */ | |
3388 | asection *link_sec; | |
3389 | /* The stub section. */ | |
3390 | asection *stub_sec; | |
ad8e1ba5 AM |
3391 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3392 | bfd_vma toc_off; | |
721956f4 AM |
3393 | } *stub_group; |
3394 | ||
ad8e1ba5 AM |
3395 | /* Temp used when calculating TOC pointers. */ |
3396 | bfd_vma toc_curr; | |
3397 | ||
8f3bab57 AM |
3398 | /* Highest input section id. */ |
3399 | int top_id; | |
3400 | ||
734b6cf9 AM |
3401 | /* Highest output section index. */ |
3402 | int top_index; | |
3403 | ||
b3fac117 AM |
3404 | /* Used when adding symbols. */ |
3405 | struct ppc_link_hash_entry *dot_syms; | |
3406 | ||
734b6cf9 AM |
3407 | /* List of input sections for each output section. */ |
3408 | asection **input_list; | |
721956f4 | 3409 | |
65f38f15 | 3410 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3411 | asection *got; |
4ce794b7 AM |
3412 | asection *plt; |
3413 | asection *relplt; | |
3414 | asection *dynbss; | |
3415 | asection *relbss; | |
3416 | asection *glink; | |
82bd7b59 | 3417 | asection *sfpr; |
4ce794b7 AM |
3418 | asection *brlt; |
3419 | asection *relbrlt; | |
ec338859 | 3420 | |
8387904d AM |
3421 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3422 | struct ppc_link_hash_entry *tls_get_addr; | |
3423 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3424 | |
9b5ecbd0 AM |
3425 | /* Statistics. */ |
3426 | unsigned long stub_count[ppc_stub_plt_call]; | |
3427 | ||
ee75fd95 AM |
3428 | /* Number of stubs against global syms. */ |
3429 | unsigned long stub_globals; | |
3430 | ||
ad8e1ba5 | 3431 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3432 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3433 | |
4c52953f AM |
3434 | /* Support for multiple toc sections. */ |
3435 | unsigned int no_multi_toc:1; | |
3436 | unsigned int multi_toc_needed:1; | |
3437 | ||
5d1634d7 | 3438 | /* Set on error. */ |
99877b66 | 3439 | unsigned int stub_error:1; |
721956f4 | 3440 | |
99877b66 AM |
3441 | /* Temp used by ppc64_elf_check_directives. */ |
3442 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3443 | |
3444 | /* Incremented every time we size stubs. */ | |
3445 | unsigned int stub_iteration; | |
5d1634d7 | 3446 | |
ec338859 AM |
3447 | /* Small local sym to section mapping cache. */ |
3448 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3449 | }; |
3450 | ||
4c52953f AM |
3451 | /* Rename some of the generic section flags to better document how they |
3452 | are used here. */ | |
3453 | #define has_toc_reloc has_gp_reloc | |
3454 | #define makes_toc_func_call need_finalize_relax | |
3455 | #define call_check_in_progress reloc_done | |
3456 | ||
65f38f15 AM |
3457 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3458 | ||
3459 | #define ppc_hash_table(p) \ | |
3460 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3461 | ||
721956f4 AM |
3462 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3463 | ((struct ppc_stub_hash_entry *) \ | |
3464 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3465 | ||
3466 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3467 | ((struct ppc_branch_hash_entry *) \ | |
3468 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3469 | ||
3470 | /* Create an entry in the stub hash table. */ | |
3471 | ||
3472 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3473 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3474 | struct bfd_hash_table *table, | |
3475 | const char *string) | |
721956f4 AM |
3476 | { |
3477 | /* Allocate the structure if it has not already been allocated by a | |
3478 | subclass. */ | |
3479 | if (entry == NULL) | |
3480 | { | |
3481 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3482 | if (entry == NULL) | |
3483 | return entry; | |
3484 | } | |
3485 | ||
3486 | /* Call the allocation method of the superclass. */ | |
3487 | entry = bfd_hash_newfunc (entry, table, string); | |
3488 | if (entry != NULL) | |
3489 | { | |
3490 | struct ppc_stub_hash_entry *eh; | |
3491 | ||
3492 | /* Initialize the local fields. */ | |
3493 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3494 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3495 | eh->stub_sec = NULL; |
3496 | eh->stub_offset = 0; | |
3497 | eh->target_value = 0; | |
3498 | eh->target_section = NULL; | |
721956f4 AM |
3499 | eh->h = NULL; |
3500 | eh->id_sec = NULL; | |
3501 | } | |
3502 | ||
3503 | return entry; | |
3504 | } | |
3505 | ||
3506 | /* Create an entry in the branch hash table. */ | |
3507 | ||
3508 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3509 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3510 | struct bfd_hash_table *table, | |
3511 | const char *string) | |
721956f4 AM |
3512 | { |
3513 | /* Allocate the structure if it has not already been allocated by a | |
3514 | subclass. */ | |
3515 | if (entry == NULL) | |
3516 | { | |
3517 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3518 | if (entry == NULL) | |
3519 | return entry; | |
3520 | } | |
3521 | ||
3522 | /* Call the allocation method of the superclass. */ | |
3523 | entry = bfd_hash_newfunc (entry, table, string); | |
3524 | if (entry != NULL) | |
3525 | { | |
3526 | struct ppc_branch_hash_entry *eh; | |
3527 | ||
3528 | /* Initialize the local fields. */ | |
3529 | eh = (struct ppc_branch_hash_entry *) entry; | |
3530 | eh->offset = 0; | |
3531 | eh->iter = 0; | |
3532 | } | |
3533 | ||
3534 | return entry; | |
3535 | } | |
3536 | ||
65f38f15 AM |
3537 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3538 | ||
3539 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3540 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3541 | struct bfd_hash_table *table, | |
3542 | const char *string) | |
65f38f15 AM |
3543 | { |
3544 | /* Allocate the structure if it has not already been allocated by a | |
3545 | subclass. */ | |
3546 | if (entry == NULL) | |
3547 | { | |
3548 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3549 | if (entry == NULL) | |
3550 | return entry; | |
3551 | } | |
3552 | ||
3553 | /* Call the allocation method of the superclass. */ | |
3554 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3555 | if (entry != NULL) | |
3556 | { | |
3557 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3558 | ||
b3fac117 | 3559 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3560 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3561 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3562 | ||
3563 | /* When making function calls, old ABI code references function entry | |
3564 | points (dot symbols), while new ABI code references the function | |
3565 | descriptor symbol. We need to make any combination of reference and | |
3566 | definition work together, without breaking archive linking. | |
3567 | ||
3568 | For a defined function "foo" and an undefined call to "bar": | |
3569 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3570 | "bar" too). | |
3571 | A new object defines "foo" and references "bar". | |
3572 | ||
3573 | A new object thus has no problem with its undefined symbols being | |
3574 | satisfied by definitions in an old object. On the other hand, the | |
3575 | old object won't have ".bar" satisfied by a new object. | |
3576 | ||
3577 | Keep a list of newly added dot-symbols. */ | |
3578 | ||
3579 | if (string[0] == '.') | |
3580 | { | |
3581 | struct ppc_link_hash_table *htab; | |
3582 | ||
3583 | htab = (struct ppc_link_hash_table *) table; | |
3584 | eh->u.next_dot_sym = htab->dot_syms; | |
3585 | htab->dot_syms = eh; | |
3586 | } | |
65f38f15 AM |
3587 | } |
3588 | ||
3589 | return entry; | |
3590 | } | |
3591 | ||
3592 | /* Create a ppc64 ELF linker hash table. */ | |
3593 | ||
3594 | static struct bfd_link_hash_table * | |
4ce794b7 | 3595 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3596 | { |
3597 | struct ppc_link_hash_table *htab; | |
3598 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3599 | ||
4ce794b7 | 3600 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3601 | if (htab == NULL) |
3602 | return NULL; | |
3603 | ||
66eb6687 AM |
3604 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3605 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3606 | { |
e2d34d7d | 3607 | free (htab); |
65f38f15 AM |
3608 | return NULL; |
3609 | } | |
3610 | ||
721956f4 | 3611 | /* Init the stub hash table too. */ |
66eb6687 AM |
3612 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3613 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3614 | return NULL; |
3615 | ||
3616 | /* And the branch hash table. */ | |
66eb6687 AM |
3617 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3618 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3619 | return NULL; |
3620 | ||
3254fd24 AM |
3621 | /* Initializing two fields of the union is just cosmetic. We really |
3622 | only care about glist, but when compiled on a 32-bit host the | |
3623 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3624 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3625 | htab->elf.init_got_refcount.refcount = 0; |
3626 | htab->elf.init_got_refcount.glist = NULL; | |
3627 | htab->elf.init_plt_refcount.refcount = 0; | |
3628 | htab->elf.init_plt_refcount.glist = NULL; | |
3629 | htab->elf.init_got_offset.offset = 0; | |
3630 | htab->elf.init_got_offset.glist = NULL; | |
3631 | htab->elf.init_plt_offset.offset = 0; | |
3632 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3633 | |
65f38f15 AM |
3634 | return &htab->elf.root; |
3635 | } | |
3636 | ||
721956f4 AM |
3637 | /* Free the derived linker hash table. */ |
3638 | ||
3639 | static void | |
4ce794b7 | 3640 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3641 | { |
3642 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3643 | ||
3644 | bfd_hash_table_free (&ret->stub_hash_table); | |
3645 | bfd_hash_table_free (&ret->branch_hash_table); | |
3646 | _bfd_generic_link_hash_table_free (hash); | |
3647 | } | |
3648 | ||
e717da7e AM |
3649 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3650 | ||
3651 | void | |
3652 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3653 | { | |
3654 | struct ppc_link_hash_table *htab; | |
3655 | ||
3656 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3657 | ||
3658 | /* Always hook our dynamic sections into the first bfd, which is the | |
3659 | linker created stub bfd. This ensures that the GOT header is at | |
3660 | the start of the output TOC section. */ | |
3661 | htab = ppc_hash_table (info); | |
3662 | htab->stub_bfd = abfd; | |
3663 | htab->elf.dynobj = abfd; | |
3664 | } | |
3665 | ||
721956f4 AM |
3666 | /* Build a name for an entry in the stub hash table. */ |
3667 | ||
3668 | static char * | |
4ce794b7 AM |
3669 | ppc_stub_name (const asection *input_section, |
3670 | const asection *sym_sec, | |
3671 | const struct ppc_link_hash_entry *h, | |
3672 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3673 | { |
3674 | char *stub_name; | |
3675 | bfd_size_type len; | |
3676 | ||
3677 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3678 | offsets from a sym as a branch target? In fact, we could | |
3679 | probably assume the addend is always zero. */ | |
3680 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3681 | ||
3682 | if (h) | |
3683 | { | |
3684 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3685 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3686 | if (stub_name == NULL) |
3687 | return stub_name; | |
3688 | ||
3689 | sprintf (stub_name, "%08x.%s+%x", | |
3690 | input_section->id & 0xffffffff, | |
3691 | h->elf.root.root.string, | |
3692 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3693 | } |
3694 | else | |
3695 | { | |
ad8e1ba5 | 3696 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3697 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3698 | if (stub_name == NULL) |
3699 | return stub_name; | |
3700 | ||
3701 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3702 | input_section->id & 0xffffffff, | |
3703 | sym_sec->id & 0xffffffff, | |
3704 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3705 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3706 | } |
ee75fd95 AM |
3707 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3708 | stub_name[len - 2] = 0; | |
721956f4 AM |
3709 | return stub_name; |
3710 | } | |
3711 | ||
3712 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3713 | creating the stub name takes a bit of time. */ | |
3714 | ||
3715 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3716 | ppc_get_stub_entry (const asection *input_section, |
3717 | const asection *sym_sec, | |
039b3fef | 3718 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3719 | const Elf_Internal_Rela *rel, |
3720 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3721 | { |
3722 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3723 | const asection *id_sec; |
3724 | ||
3725 | /* If this input section is part of a group of sections sharing one | |
3726 | stub section, then use the id of the first section in the group. | |
3727 | Stub names need to include a section id, as there may well be | |
3728 | more than one stub used to reach say, printf, and we need to | |
3729 | distinguish between them. */ | |
3730 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3731 | ||
b3fac117 AM |
3732 | if (h != NULL && h->u.stub_cache != NULL |
3733 | && h->u.stub_cache->h == h | |
3734 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3735 | { |
b3fac117 | 3736 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3737 | } |
3738 | else | |
3739 | { | |
3740 | char *stub_name; | |
3741 | ||
3742 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3743 | if (stub_name == NULL) | |
3744 | return NULL; | |
3745 | ||
3746 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3747 | stub_name, FALSE, FALSE); |
721956f4 | 3748 | if (h != NULL) |
b3fac117 | 3749 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3750 | |
3751 | free (stub_name); | |
3752 | } | |
3753 | ||
3754 | return stub_entry; | |
3755 | } | |
3756 | ||
3757 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3758 | stub entry are initialised. */ | |
3759 | ||
3760 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3761 | ppc_add_stub (const char *stub_name, |
3762 | asection *section, | |
3763 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3764 | { |
3765 | asection *link_sec; | |
3766 | asection *stub_sec; | |
3767 | struct ppc_stub_hash_entry *stub_entry; | |
3768 | ||
3769 | link_sec = htab->stub_group[section->id].link_sec; | |
3770 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3771 | if (stub_sec == NULL) | |
3772 | { | |
3773 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3774 | if (stub_sec == NULL) | |
3775 | { | |
d4c88bbb | 3776 | size_t namelen; |
721956f4 AM |
3777 | bfd_size_type len; |
3778 | char *s_name; | |
3779 | ||
d4c88bbb AM |
3780 | namelen = strlen (link_sec->name); |
3781 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3782 | s_name = bfd_alloc (htab->stub_bfd, len); |
3783 | if (s_name == NULL) | |
3784 | return NULL; | |
3785 | ||
d4c88bbb AM |
3786 | memcpy (s_name, link_sec->name, namelen); |
3787 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3788 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3789 | if (stub_sec == NULL) | |
3790 | return NULL; | |
3791 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3792 | } | |
3793 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3794 | } | |
3795 | ||
3796 | /* Enter this entry into the linker stub hash table. */ | |
3797 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3798 | TRUE, FALSE); |
721956f4 AM |
3799 | if (stub_entry == NULL) |
3800 | { | |
d003868e AM |
3801 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3802 | section->owner, stub_name); | |
721956f4 AM |
3803 | return NULL; |
3804 | } | |
3805 | ||
3806 | stub_entry->stub_sec = stub_sec; | |
3807 | stub_entry->stub_offset = 0; | |
3808 | stub_entry->id_sec = link_sec; | |
3809 | return stub_entry; | |
3810 | } | |
3811 | ||
82bd7b59 AM |
3812 | /* Create sections for linker generated code. */ |
3813 | ||
b34976b6 | 3814 | static bfd_boolean |
4ce794b7 | 3815 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3816 | { |
3817 | struct ppc_link_hash_table *htab; | |
3818 | flagword flags; | |
3819 | ||
3820 | htab = ppc_hash_table (info); | |
3821 | ||
3822 | /* Create .sfpr for code to save and restore fp regs. */ | |
3823 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3824 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3825 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3826 | flags); | |
82bd7b59 | 3827 | if (htab->sfpr == NULL |
82bd7b59 | 3828 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3829 | return FALSE; |
82bd7b59 | 3830 | |
721956f4 | 3831 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3832 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3833 | flags); | |
4ce794b7 | 3834 | if (htab->glink == NULL |
ee4bf8d2 | 3835 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 3836 | return FALSE; |
82bd7b59 | 3837 | |
c456f082 | 3838 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
3839 | flags = (SEC_ALLOC | SEC_LOAD |
3840 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3841 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3842 | flags); | |
4ce794b7 | 3843 | if (htab->brlt == NULL |
4ce794b7 | 3844 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3845 | return FALSE; |
721956f4 | 3846 | |
e4e0193e | 3847 | if (!info->shared) |
c456f082 AM |
3848 | return TRUE; |
3849 | ||
e4e0193e AM |
3850 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
3851 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3852 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
3853 | ".rela.branch_lt", | |
3854 | flags); | |
c456f082 AM |
3855 | if (!htab->relbrlt |
3856 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3857 | return FALSE; | |
3858 | ||
b34976b6 | 3859 | return TRUE; |
82bd7b59 AM |
3860 | } |
3861 | ||
e717da7e AM |
3862 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3863 | not already done. */ | |
65f38f15 | 3864 | |
b34976b6 | 3865 | static bfd_boolean |
e717da7e | 3866 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3867 | { |
e717da7e AM |
3868 | asection *got, *relgot; |
3869 | flagword flags; | |
3870 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3871 | |
4ce794b7 | 3872 | if (!htab->got) |
e717da7e AM |
3873 | { |
3874 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3875 | return FALSE; | |
3876 | ||
3877 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3878 | if (!htab->got) | |
3879 | abort (); | |
3880 | } | |
3881 | ||
3882 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3883 | | SEC_LINKER_CREATED); | |
3884 | ||
c456f082 | 3885 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3886 | if (!got |
e717da7e AM |
3887 | || !bfd_set_section_alignment (abfd, got, 3)) |
3888 | return FALSE; | |
65f38f15 | 3889 | |
c456f082 AM |
3890 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3891 | flags | SEC_READONLY); | |
e717da7e | 3892 | if (!relgot |
e717da7e | 3893 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3894 | return FALSE; |
e717da7e AM |
3895 | |
3896 | ppc64_elf_tdata (abfd)->got = got; | |
3897 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3898 | return TRUE; |
65f38f15 | 3899 | } |
5bd4f169 | 3900 | |
82bd7b59 | 3901 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3902 | |
b34976b6 | 3903 | static bfd_boolean |
4ce794b7 | 3904 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3905 | { |
65f38f15 | 3906 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3907 | |
65f38f15 | 3908 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3909 | return FALSE; |
65f38f15 | 3910 | |
e717da7e AM |
3911 | htab = ppc_hash_table (info); |
3912 | if (!htab->got) | |
3913 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3914 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3915 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3916 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3917 | if (!info->shared) |
4ce794b7 | 3918 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3919 | |
e717da7e | 3920 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3921 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3922 | abort (); |
3923 | ||
b34976b6 | 3924 | return TRUE; |
5bd4f169 AM |
3925 | } |
3926 | ||
40d16e0b AM |
3927 | /* Merge PLT info on FROM with that on TO. */ |
3928 | ||
3929 | static void | |
3930 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3931 | struct ppc_link_hash_entry *to) | |
3932 | { | |
3933 | if (from->elf.plt.plist != NULL) | |
3934 | { | |
3935 | if (to->elf.plt.plist != NULL) | |
3936 | { | |
3937 | struct plt_entry **entp; | |
3938 | struct plt_entry *ent; | |
3939 | ||
3940 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3941 | { | |
3942 | struct plt_entry *dent; | |
3943 | ||
3944 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3945 | if (dent->addend == ent->addend) | |
3946 | { | |
3947 | dent->plt.refcount += ent->plt.refcount; | |
3948 | *entp = ent->next; | |
3949 | break; | |
3950 | } | |
3951 | if (dent == NULL) | |
3952 | entp = &ent->next; | |
3953 | } | |
3954 | *entp = to->elf.plt.plist; | |
3955 | } | |
3956 | ||
3957 | to->elf.plt.plist = from->elf.plt.plist; | |
3958 | from->elf.plt.plist = NULL; | |
3959 | } | |
3960 | } | |
3961 | ||
65f38f15 AM |
3962 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3963 | ||
3964 | static void | |
fcfa13d2 AM |
3965 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3966 | struct elf_link_hash_entry *dir, | |
3967 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3968 | { |
3969 | struct ppc_link_hash_entry *edir, *eind; | |
3970 | ||
3971 | edir = (struct ppc_link_hash_entry *) dir; | |
3972 | eind = (struct ppc_link_hash_entry *) ind; | |
3973 | ||
411e1bfb | 3974 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3975 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3976 | { |
bbd7ec4a AM |
3977 | if (edir->dyn_relocs != NULL) |
3978 | { | |
3979 | struct ppc_dyn_relocs **pp; | |
3980 | struct ppc_dyn_relocs *p; | |
3981 | ||
fcfa13d2 | 3982 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3983 | list. Merge any entries against the same section. */ |
3984 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3985 | { | |
3986 | struct ppc_dyn_relocs *q; | |
3987 | ||
3988 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3989 | if (q->sec == p->sec) | |
3990 | { | |
3991 | q->pc_count += p->pc_count; | |
3992 | q->count += p->count; | |
3993 | *pp = p->next; | |
3994 | break; | |
3995 | } | |
3996 | if (q == NULL) | |
3997 | pp = &p->next; | |
3998 | } | |
3999 | *pp = edir->dyn_relocs; | |
4000 | } | |
4001 | ||
65f38f15 AM |
4002 | edir->dyn_relocs = eind->dyn_relocs; |
4003 | eind->dyn_relocs = NULL; | |
4004 | } | |
65f38f15 | 4005 | |
6349e628 AM |
4006 | edir->is_func |= eind->is_func; |
4007 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4008 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4009 | |
81848ca0 | 4010 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4011 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4012 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4013 | if (!(ELIMINATE_COPY_RELOCS |
4014 | && eind->elf.root.type != bfd_link_hash_indirect | |
4015 | && edir->elf.dynamic_adjusted)) | |
4016 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4017 | |
f5385ebf AM |
4018 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4019 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4020 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4021 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4022 | |
4023 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4024 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4025 | return; | |
4026 | ||
81848ca0 AM |
4027 | /* Copy over got entries that we may have already seen to the |
4028 | symbol which just became indirect. */ | |
411e1bfb AM |
4029 | if (eind->elf.got.glist != NULL) |
4030 | { | |
4031 | if (edir->elf.got.glist != NULL) | |
4032 | { | |
4033 | struct got_entry **entp; | |
4034 | struct got_entry *ent; | |
4035 | ||
4036 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4037 | { | |
4038 | struct got_entry *dent; | |
4039 | ||
4040 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4041 | if (dent->addend == ent->addend | |
e717da7e | 4042 | && dent->owner == ent->owner |
411e1bfb AM |
4043 | && dent->tls_type == ent->tls_type) |
4044 | { | |
4045 | dent->got.refcount += ent->got.refcount; | |
4046 | *entp = ent->next; | |
4047 | break; | |
4048 | } | |
4049 | if (dent == NULL) | |
4050 | entp = &ent->next; | |
4051 | } | |
4052 | *entp = edir->elf.got.glist; | |
4053 | } | |
4054 | ||
4055 | edir->elf.got.glist = eind->elf.got.glist; | |
4056 | eind->elf.got.glist = NULL; | |
4057 | } | |
4058 | ||
4059 | /* And plt entries. */ | |
40d16e0b | 4060 | move_plt_plist (eind, edir); |
411e1bfb | 4061 | |
fcfa13d2 | 4062 | if (eind->elf.dynindx != -1) |
411e1bfb | 4063 | { |
fcfa13d2 AM |
4064 | if (edir->elf.dynindx != -1) |
4065 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4066 | edir->elf.dynstr_index); | |
411e1bfb AM |
4067 | edir->elf.dynindx = eind->elf.dynindx; |
4068 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4069 | eind->elf.dynindx = -1; | |
4070 | eind->elf.dynstr_index = 0; | |
4071 | } | |
411e1bfb AM |
4072 | } |
4073 | ||
8387904d AM |
4074 | /* Find the function descriptor hash entry from the given function code |
4075 | hash entry FH. Link the entries via their OH fields. */ | |
4076 | ||
4077 | static struct ppc_link_hash_entry * | |
4078 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4079 | { | |
4080 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4081 | ||
4082 | if (fdh == NULL) | |
4083 | { | |
4084 | const char *fd_name = fh->elf.root.root.string + 1; | |
4085 | ||
4086 | fdh = (struct ppc_link_hash_entry *) | |
4087 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4088 | if (fdh != NULL) | |
4089 | { | |
4090 | fdh->is_func_descriptor = 1; | |
4091 | fdh->oh = fh; | |
4092 | fh->is_func = 1; | |
4093 | fh->oh = fdh; | |
4094 | } | |
4095 | } | |
4096 | ||
4097 | return fdh; | |
4098 | } | |
4099 | ||
bb700d78 AM |
4100 | /* Make a fake function descriptor sym for the code sym FH. */ |
4101 | ||
4102 | static struct ppc_link_hash_entry * | |
4103 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4104 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4105 | { |
4106 | bfd *abfd; | |
4107 | asymbol *newsym; | |
4108 | struct bfd_link_hash_entry *bh; | |
4109 | struct ppc_link_hash_entry *fdh; | |
4110 | ||
4111 | abfd = fh->elf.root.u.undef.abfd; | |
4112 | newsym = bfd_make_empty_symbol (abfd); | |
4113 | newsym->name = fh->elf.root.root.string + 1; | |
4114 | newsym->section = bfd_und_section_ptr; | |
4115 | newsym->value = 0; | |
908b32fc | 4116 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4117 | |
4118 | bh = NULL; | |
4119 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4120 | newsym->flags, newsym->section, | |
4121 | newsym->value, NULL, FALSE, FALSE, | |
4122 | &bh)) | |
4123 | return NULL; | |
4124 | ||
4125 | fdh = (struct ppc_link_hash_entry *) bh; | |
4126 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4127 | fdh->fake = 1; |
4128 | fdh->is_func_descriptor = 1; | |
4129 | fdh->oh = fh; | |
4130 | fh->is_func = 1; | |
4131 | fh->oh = fdh; | |
bb700d78 AM |
4132 | return fdh; |
4133 | } | |
4134 | ||
8387904d AM |
4135 | /* Fix function descriptor symbols defined in .opd sections to be |
4136 | function type. */ | |
555cd476 AM |
4137 | |
4138 | static bfd_boolean | |
b3fac117 | 4139 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4140 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4141 | Elf_Internal_Sym *isym, | |
b3fac117 | 4142 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4143 | flagword *flags ATTRIBUTE_UNUSED, |
4144 | asection **sec, | |
4145 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4146 | { | |
8843416a AM |
4147 | if (*sec != NULL |
4148 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4149 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4150 | |
555cd476 AM |
4151 | return TRUE; |
4152 | } | |
4153 | ||
8387904d | 4154 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4155 | inclusion of a new ABI object archive that defines "bar". |
4156 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4157 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4158 | |
4159 | static struct elf_link_hash_entry * | |
4160 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4161 | struct bfd_link_info *info, | |
4162 | const char *name) | |
4163 | { | |
4164 | struct elf_link_hash_entry *h; | |
4165 | char *dot_name; | |
4166 | size_t len; | |
4167 | ||
4168 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4169 | if (h != NULL |
4170 | /* Don't return this sym if it is a fake function descriptor | |
4171 | created by add_symbol_adjust. */ | |
4172 | && !(h->root.type == bfd_link_hash_undefweak | |
4173 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4174 | return h; |
4175 | ||
4176 | if (name[0] == '.') | |
4177 | return h; | |
4178 | ||
4179 | len = strlen (name); | |
4180 | dot_name = bfd_alloc (abfd, len + 2); | |
4181 | if (dot_name == NULL) | |
4182 | return (struct elf_link_hash_entry *) 0 - 1; | |
4183 | dot_name[0] = '.'; | |
4184 | memcpy (dot_name + 1, name, len + 1); | |
4185 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4186 | bfd_release (abfd, dot_name); | |
4187 | return h; | |
4188 | } | |
4189 | ||
4190 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4191 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4192 | are made weak. This stops later archive searches from including an | |
4193 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4194 | prevents the linker complaining about undefined symbols. |
4195 | We also check and correct mismatched symbol visibility here. The | |
4196 | most restrictive visibility of the function descriptor and the | |
4197 | function entry symbol is used. */ | |
8387904d AM |
4198 | |
4199 | static bfd_boolean | |
b3fac117 | 4200 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4201 | { |
8387904d AM |
4202 | struct ppc_link_hash_table *htab; |
4203 | struct ppc_link_hash_entry *fdh; | |
4204 | ||
b3fac117 | 4205 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4206 | return TRUE; |
4207 | ||
b3fac117 AM |
4208 | if (eh->elf.root.type == bfd_link_hash_warning) |
4209 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4210 | |
b3fac117 AM |
4211 | if (eh->elf.root.root.string[0] != '.') |
4212 | abort (); | |
8387904d | 4213 | |
b3fac117 | 4214 | htab = ppc_hash_table (info); |
99877b66 | 4215 | fdh = get_fdh (eh, htab); |
bb700d78 | 4216 | if (fdh == NULL |
b3fac117 | 4217 | && !info->relocatable |
bb700d78 AM |
4218 | && (eh->elf.root.type == bfd_link_hash_undefined |
4219 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4220 | && eh->elf.ref_regular) | |
4221 | { | |
4222 | /* Make an undefweak function descriptor sym, which is enough to | |
4223 | pull in an --as-needed shared lib, but won't cause link | |
4224 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4225 | fdh = make_fdh (info, eh); |
bb700d78 | 4226 | if (fdh == NULL) |
b3fac117 | 4227 | return FALSE; |
bb700d78 AM |
4228 | else |
4229 | fdh->elf.ref_regular = 1; | |
4230 | } | |
e87d886e | 4231 | else if (fdh != NULL) |
8387904d | 4232 | { |
35b0ce59 AM |
4233 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4234 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4235 | if (entry_vis < descr_vis) | |
4236 | fdh->elf.other += entry_vis - descr_vis; | |
4237 | else if (entry_vis > descr_vis) | |
4238 | eh->elf.other += descr_vis - entry_vis; | |
4239 | ||
e87d886e AM |
4240 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4241 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4242 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4243 | { |
4244 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4245 | eh->was_undefined = 1; | |
4246 | htab->twiddled_syms = 1; | |
4247 | } | |
8387904d | 4248 | } |
99877b66 | 4249 | |
8387904d AM |
4250 | return TRUE; |
4251 | } | |
4252 | ||
b3fac117 AM |
4253 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4254 | ||
8387904d | 4255 | static bfd_boolean |
b3fac117 | 4256 | ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4257 | { |
99877b66 | 4258 | struct ppc_link_hash_table *htab; |
b3fac117 | 4259 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4260 | |
99877b66 | 4261 | htab = ppc_hash_table (info); |
ee75fd95 | 4262 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4263 | return TRUE; |
4264 | ||
b3fac117 AM |
4265 | if (is_ppc64_elf_target (ibfd->xvec)) |
4266 | { | |
4267 | p = &htab->dot_syms; | |
4268 | while ((eh = *p) != NULL) | |
4269 | { | |
4270 | *p = NULL; | |
4271 | if (!add_symbol_adjust (eh, info)) | |
4272 | return FALSE; | |
4273 | p = &eh->u.next_dot_sym; | |
4274 | } | |
4275 | } | |
4276 | ||
4277 | /* Clear the list for non-ppc64 input files. */ | |
4278 | p = &htab->dot_syms; | |
4279 | while ((eh = *p) != NULL) | |
4280 | { | |
4281 | *p = NULL; | |
4282 | p = &eh->u.next_dot_sym; | |
4283 | } | |
99877b66 AM |
4284 | |
4285 | /* We need to fix the undefs list for any syms we have twiddled to | |
4286 | undef_weak. */ | |
4287 | if (htab->twiddled_syms) | |
4288 | { | |
77cfaee6 | 4289 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4290 | htab->twiddled_syms = 0; |
4291 | } | |
b3fac117 | 4292 | return TRUE; |
8387904d AM |
4293 | } |
4294 | ||
97fed1c9 JJ |
4295 | /* Undo hash table changes when an --as-needed input file is determined |
4296 | not to be needed. */ | |
4297 | ||
4298 | static bfd_boolean | |
4299 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4300 | struct bfd_link_info *info) | |
4301 | { | |
4302 | ppc_hash_table (info)->dot_syms = NULL; | |
4303 | return TRUE; | |
4304 | } | |
4305 | ||
411e1bfb | 4306 | static bfd_boolean |
4ce794b7 AM |
4307 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4308 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4309 | { |
4310 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4311 | char *local_got_tls_masks; |
411e1bfb AM |
4312 | |
4313 | if (local_got_ents == NULL) | |
4314 | { | |
4315 | bfd_size_type size = symtab_hdr->sh_info; | |
4316 | ||
e7b938ca | 4317 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4318 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4319 | if (local_got_ents == NULL) |
4320 | return FALSE; | |
4321 | elf_local_got_ents (abfd) = local_got_ents; | |
4322 | } | |
4323 | ||
4324 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4325 | { | |
4326 | struct got_entry *ent; | |
4327 | ||
4328 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4329 | if (ent->addend == r_addend |
4330 | && ent->owner == abfd | |
4331 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4332 | break; |
4333 | if (ent == NULL) | |
4334 | { | |
4335 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4336 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4337 | if (ent == NULL) |
4338 | return FALSE; | |
4339 | ent->next = local_got_ents[r_symndx]; | |
4340 | ent->addend = r_addend; | |
e717da7e | 4341 | ent->owner = abfd; |
411e1bfb AM |
4342 | ent->tls_type = tls_type; |
4343 | ent->got.refcount = 0; | |
4344 | local_got_ents[r_symndx] = ent; | |
4345 | } | |
4346 | ent->got.refcount += 1; | |
4347 | } | |
4348 | ||
e7b938ca AM |
4349 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4350 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4351 | return TRUE; |
65f38f15 AM |
4352 | } |
4353 | ||
411e1bfb | 4354 | static bfd_boolean |
4ce794b7 | 4355 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4356 | { |
411e1bfb | 4357 | struct plt_entry *ent; |
1e2f5b6e | 4358 | |
411e1bfb AM |
4359 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4360 | if (ent->addend == addend) | |
4361 | break; | |
4362 | if (ent == NULL) | |
1e2f5b6e | 4363 | { |
411e1bfb | 4364 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4365 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4366 | if (ent == NULL) |
4367 | return FALSE; | |
4368 | ent->next = eh->elf.plt.plist; | |
4369 | ent->addend = addend; | |
4370 | ent->plt.refcount = 0; | |
4371 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4372 | } |
411e1bfb | 4373 | ent->plt.refcount += 1; |
f5385ebf | 4374 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4375 | if (eh->elf.root.root.string[0] == '.' |
4376 | && eh->elf.root.root.string[1] != '\0') | |
4377 | eh->is_func = 1; | |
b34976b6 | 4378 | return TRUE; |
1e2f5b6e AM |
4379 | } |
4380 | ||
5bd4f169 | 4381 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4382 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4383 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4384 | |
b34976b6 | 4385 | static bfd_boolean |
4ce794b7 AM |
4386 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4387 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4388 | { |
65f38f15 | 4389 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4390 | Elf_Internal_Shdr *symtab_hdr; |
4391 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4392 | const Elf_Internal_Rela *rel; | |
4393 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4394 | asection *sreloc; |
1e2f5b6e | 4395 | asection **opd_sym_map; |
5bd4f169 | 4396 | |
1049f94e | 4397 | if (info->relocatable) |
b34976b6 | 4398 | return TRUE; |
5bd4f169 | 4399 | |
680a3378 AM |
4400 | /* Don't do anything special with non-loaded, non-alloced sections. |
4401 | In particular, any relocs in such sections should not affect GOT | |
4402 | and PLT reference counting (ie. we don't allow them to create GOT | |
4403 | or PLT entries), there's no possibility or desire to optimize TLS | |
4404 | relocs, and there's not much point in propagating relocs to shared | |
4405 | libs that the dynamic linker won't relocate. */ | |
4406 | if ((sec->flags & SEC_ALLOC) == 0) | |
4407 | return TRUE; | |
4408 | ||
65f38f15 | 4409 | htab = ppc_hash_table (info); |
5bd4f169 | 4410 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4411 | |
4412 | sym_hashes = elf_sym_hashes (abfd); | |
4413 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4414 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4415 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4416 | |
4417 | sreloc = NULL; | |
1e2f5b6e AM |
4418 | opd_sym_map = NULL; |
4419 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4420 | { | |
4421 | /* Garbage collection needs some extra help with .opd sections. | |
4422 | We don't want to necessarily keep everything referenced by | |
4423 | relocs in .opd, as that would keep all functions. Instead, | |
4424 | if we reference an .opd symbol (a function descriptor), we | |
4425 | want to keep the function code symbol's section. This is | |
4426 | easy for global symbols, but for local syms we need to keep | |
4427 | information about the associated function section. Later, if | |
4428 | edit_opd deletes entries, we'll use this array to adjust | |
4429 | local syms in .opd. */ | |
4430 | union opd_info { | |
4431 | asection *func_section; | |
4432 | long entry_adjust; | |
4433 | }; | |
4434 | bfd_size_type amt; | |
4435 | ||
3f764659 | 4436 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4437 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4438 | if (opd_sym_map == NULL) |
b34976b6 | 4439 | return FALSE; |
7c8fe5c4 AM |
4440 | ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map; |
4441 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
4442 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4443 | } |
5bd4f169 | 4444 | |
82bd7b59 AM |
4445 | if (htab->sfpr == NULL |
4446 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4447 | return FALSE; |
82bd7b59 | 4448 | |
5bd4f169 AM |
4449 | rel_end = relocs + sec->reloc_count; |
4450 | for (rel = relocs; rel < rel_end; rel++) | |
4451 | { | |
4452 | unsigned long r_symndx; | |
4453 | struct elf_link_hash_entry *h; | |
04c9666a | 4454 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4455 | int tls_type = 0; |
7c8fe5c4 | 4456 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4457 | |
4458 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4459 | if (r_symndx < symtab_hdr->sh_info) | |
4460 | h = NULL; | |
4461 | else | |
973a3492 L |
4462 | { |
4463 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4464 | while (h->root.type == bfd_link_hash_indirect | |
4465 | || h->root.type == bfd_link_hash_warning) | |
4466 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4467 | } | |
5bd4f169 | 4468 | |
4ce794b7 | 4469 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4470 | switch (r_type) |
5bd4f169 | 4471 | { |
411e1bfb AM |
4472 | case R_PPC64_GOT_TLSLD16: |
4473 | case R_PPC64_GOT_TLSLD16_LO: | |
4474 | case R_PPC64_GOT_TLSLD16_HI: | |
4475 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4476 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4477 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4478 | goto dogottls; |
4479 | ||
4480 | case R_PPC64_GOT_TLSGD16: | |
4481 | case R_PPC64_GOT_TLSGD16_LO: | |
4482 | case R_PPC64_GOT_TLSGD16_HI: | |
4483 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4484 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4485 | goto dogottls; |
4486 | ||
4487 | case R_PPC64_GOT_TPREL16_DS: | |
4488 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4489 | case R_PPC64_GOT_TPREL16_HI: | |
4490 | case R_PPC64_GOT_TPREL16_HA: | |
4491 | if (info->shared) | |
4492 | info->flags |= DF_STATIC_TLS; | |
4493 | tls_type = TLS_TLS | TLS_TPREL; | |
4494 | goto dogottls; | |
4495 | ||
4496 | case R_PPC64_GOT_DTPREL16_DS: | |
4497 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4498 | case R_PPC64_GOT_DTPREL16_HI: | |
4499 | case R_PPC64_GOT_DTPREL16_HA: | |
4500 | tls_type = TLS_TLS | TLS_DTPREL; | |
4501 | dogottls: | |
4502 | sec->has_tls_reloc = 1; | |
4503 | /* Fall thru */ | |
4504 | ||
5bd4f169 | 4505 | case R_PPC64_GOT16: |
5bd4f169 | 4506 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4507 | case R_PPC64_GOT16_HA: |
4508 | case R_PPC64_GOT16_HI: | |
4509 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4510 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4511 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4512 | sec->has_toc_reloc = 1; |
e717da7e AM |
4513 | if (ppc64_elf_tdata (abfd)->got == NULL |
4514 | && !create_got_section (abfd, info)) | |
b34976b6 | 4515 | return FALSE; |
5bd4f169 AM |
4516 | |
4517 | if (h != NULL) | |
4518 | { | |
411e1bfb AM |
4519 | struct ppc_link_hash_entry *eh; |
4520 | struct got_entry *ent; | |
65f38f15 | 4521 | |
411e1bfb AM |
4522 | eh = (struct ppc_link_hash_entry *) h; |
4523 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4524 | if (ent->addend == rel->r_addend | |
e717da7e | 4525 | && ent->owner == abfd |
411e1bfb AM |
4526 | && ent->tls_type == tls_type) |
4527 | break; | |
4528 | if (ent == NULL) | |
5bd4f169 | 4529 | { |
411e1bfb | 4530 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4531 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4532 | if (ent == NULL) |
b34976b6 | 4533 | return FALSE; |
411e1bfb AM |
4534 | ent->next = eh->elf.got.glist; |
4535 | ent->addend = rel->r_addend; | |
e717da7e | 4536 | ent->owner = abfd; |
411e1bfb AM |
4537 | ent->tls_type = tls_type; |
4538 | ent->got.refcount = 0; | |
4539 | eh->elf.got.glist = ent; | |
5bd4f169 | 4540 | } |
411e1bfb | 4541 | ent->got.refcount += 1; |
e7b938ca | 4542 | eh->tls_mask |= tls_type; |
5bd4f169 | 4543 | } |
411e1bfb AM |
4544 | else |
4545 | /* This is a global offset table entry for a local symbol. */ | |
4546 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4547 | rel->r_addend, tls_type)) | |
4548 | return FALSE; | |
5bd4f169 AM |
4549 | break; |
4550 | ||
5bd4f169 | 4551 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4552 | case R_PPC64_PLT16_HI: |
4553 | case R_PPC64_PLT16_LO: | |
4554 | case R_PPC64_PLT32: | |
4555 | case R_PPC64_PLT64: | |
5bd4f169 | 4556 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4557 | actually build the entry in adjust_dynamic_symbol, |
4558 | because this might be a case of linking PIC code without | |
4559 | linking in any dynamic objects, in which case we don't | |
4560 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4561 | if (h == NULL) |
4562 | { | |
4563 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4564 | table entry for a local symbol. */ |
5bd4f169 | 4565 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4566 | return FALSE; |
5bd4f169 | 4567 | } |
411e1bfb AM |
4568 | else |
4569 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4570 | rel->r_addend)) | |
4571 | return FALSE; | |
5bd4f169 AM |
4572 | break; |
4573 | ||
4574 | /* The following relocations don't need to propagate the | |
4575 | relocation if linking a shared object since they are | |
4576 | section relative. */ | |
4577 | case R_PPC64_SECTOFF: | |
4578 | case R_PPC64_SECTOFF_LO: | |
4579 | case R_PPC64_SECTOFF_HI: | |
4580 | case R_PPC64_SECTOFF_HA: | |
4581 | case R_PPC64_SECTOFF_DS: | |
4582 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4583 | case R_PPC64_DTPREL16: |
4584 | case R_PPC64_DTPREL16_LO: | |
4585 | case R_PPC64_DTPREL16_HI: | |
4586 | case R_PPC64_DTPREL16_HA: | |
4587 | case R_PPC64_DTPREL16_DS: | |
4588 | case R_PPC64_DTPREL16_LO_DS: | |
4589 | case R_PPC64_DTPREL16_HIGHER: | |
4590 | case R_PPC64_DTPREL16_HIGHERA: | |
4591 | case R_PPC64_DTPREL16_HIGHEST: | |
4592 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4593 | break; |
4594 | ||
ad8e1ba5 AM |
4595 | /* Nor do these. */ |
4596 | case R_PPC64_TOC16: | |
4597 | case R_PPC64_TOC16_LO: | |
4598 | case R_PPC64_TOC16_HI: | |
4599 | case R_PPC64_TOC16_HA: | |
4600 | case R_PPC64_TOC16_DS: | |
4601 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4602 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4603 | break; |
4604 | ||
5bd4f169 AM |
4605 | /* This relocation describes the C++ object vtable hierarchy. |
4606 | Reconstruct it for later use during GC. */ | |
4607 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4608 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4609 | return FALSE; |
5bd4f169 AM |
4610 | break; |
4611 | ||
4612 | /* This relocation describes which C++ vtable entries are actually | |
4613 | used. Record for later use during GC. */ | |
4614 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4615 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4616 | return FALSE; |
5bd4f169 AM |
4617 | break; |
4618 | ||
721956f4 AM |
4619 | case R_PPC64_REL14: |
4620 | case R_PPC64_REL14_BRTAKEN: | |
4621 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4622 | { |
4623 | asection *dest = NULL; | |
4624 | ||
4625 | /* Heuristic: If jumping outside our section, chances are | |
4626 | we are going to need a stub. */ | |
4627 | if (h != NULL) | |
4628 | { | |
4629 | /* If the sym is weak it may be overridden later, so | |
4630 | don't assume we know where a weak sym lives. */ | |
4631 | if (h->root.type == bfd_link_hash_defined) | |
4632 | dest = h->root.u.def.section; | |
4633 | } | |
4634 | else | |
4635 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4636 | sec, r_symndx); | |
4637 | if (dest != sec) | |
7c8fe5c4 | 4638 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4639 | } |
721956f4 AM |
4640 | /* Fall through. */ |
4641 | ||
5d1634d7 | 4642 | case R_PPC64_REL24: |
8387904d | 4643 | if (h != NULL) |
5d1634d7 AM |
4644 | { |
4645 | /* We may need a .plt entry if the function this reloc | |
4646 | refers to is in a shared lib. */ | |
411e1bfb AM |
4647 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4648 | rel->r_addend)) | |
4649 | return FALSE; | |
8387904d AM |
4650 | if (h == &htab->tls_get_addr->elf |
4651 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4652 | sec->has_tls_reloc = 1; |
8387904d | 4653 | else if (htab->tls_get_addr == NULL |
0112cd26 | 4654 | && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr") |
a48ebf4d AM |
4655 | && (h->root.root.string[15] == 0 |
4656 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4657 | { |
8387904d AM |
4658 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4659 | sec->has_tls_reloc = 1; | |
4660 | } | |
4661 | else if (htab->tls_get_addr_fd == NULL | |
0112cd26 | 4662 | && CONST_STRNEQ (h->root.root.string, "__tls_get_addr") |
8387904d AM |
4663 | && (h->root.root.string[14] == 0 |
4664 | || h->root.root.string[14] == '@')) | |
4665 | { | |
4666 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4667 | sec->has_tls_reloc = 1; |
4668 | } | |
4669 | } | |
4670 | break; | |
4671 | ||
4672 | case R_PPC64_TPREL64: | |
4673 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4674 | if (info->shared) | |
4675 | info->flags |= DF_STATIC_TLS; | |
4676 | goto dotlstoc; | |
4677 | ||
4678 | case R_PPC64_DTPMOD64: | |
4679 | if (rel + 1 < rel_end | |
4680 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4681 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4682 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4683 | else |
951fd09b | 4684 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4685 | goto dotlstoc; |
4686 | ||
4687 | case R_PPC64_DTPREL64: | |
4688 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4689 | if (rel != relocs | |
4690 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4691 | && rel[-1].r_offset == rel->r_offset - 8) | |
4692 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4693 | Don't mark with TLS_DTPREL. */ | |
4694 | goto dodyn; | |
4695 | ||
4696 | dotlstoc: | |
4697 | sec->has_tls_reloc = 1; | |
4698 | if (h != NULL) | |
4699 | { | |
4700 | struct ppc_link_hash_entry *eh; | |
4701 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4702 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4703 | } |
4704 | else | |
4705 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4706 | rel->r_addend, tls_type)) | |
4707 | return FALSE; | |
4708 | ||
7c8fe5c4 AM |
4709 | ppc64_sec = ppc64_elf_section_data (sec); |
4710 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4711 | { |
e7b938ca | 4712 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4713 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
7c8fe5c4 AM |
4714 | ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt); |
4715 | if (ppc64_sec->u.t_symndx == NULL) | |
411e1bfb | 4716 | return FALSE; |
7c8fe5c4 AM |
4717 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4718 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4719 | } |
4720 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
7c8fe5c4 | 4721 | ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx; |
951fd09b AM |
4722 | |
4723 | /* Mark the second slot of a GD or LD entry. | |
4724 | -1 to indicate GD and -2 to indicate LD. */ | |
4725 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
7c8fe5c4 | 4726 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4727 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
7c8fe5c4 | 4728 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4729 | goto dodyn; |
4730 | ||
4731 | case R_PPC64_TPREL16: | |
4732 | case R_PPC64_TPREL16_LO: | |
4733 | case R_PPC64_TPREL16_HI: | |
4734 | case R_PPC64_TPREL16_HA: | |
4735 | case R_PPC64_TPREL16_DS: | |
4736 | case R_PPC64_TPREL16_LO_DS: | |
4737 | case R_PPC64_TPREL16_HIGHER: | |
4738 | case R_PPC64_TPREL16_HIGHERA: | |
4739 | case R_PPC64_TPREL16_HIGHEST: | |
4740 | case R_PPC64_TPREL16_HIGHESTA: | |
4741 | if (info->shared) | |
4742 | { | |
4743 | info->flags |= DF_STATIC_TLS; | |
4744 | goto dodyn; | |
5d1634d7 AM |
4745 | } |
4746 | break; | |
4747 | ||
e86ce104 | 4748 | case R_PPC64_ADDR64: |
1e2f5b6e | 4749 | if (opd_sym_map != NULL |
1e2f5b6e | 4750 | && rel + 1 < rel_end |
4ce794b7 | 4751 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4752 | { |
8387904d AM |
4753 | if (h != NULL) |
4754 | { | |
4755 | if (h->root.root.string[0] == '.' | |
4756 | && h->root.root.string[1] != 0 | |
4757 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4758 | ; | |
4759 | else | |
4760 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4761 | } | |
4762 | else | |
4763 | { | |
4764 | asection *s; | |
1e2f5b6e | 4765 | |
8387904d AM |
4766 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4767 | r_symndx); | |
4768 | if (s == NULL) | |
4769 | return FALSE; | |
4770 | else if (s != sec) | |
3f764659 | 4771 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4772 | } |
1e2f5b6e | 4773 | } |
e86ce104 AM |
4774 | /* Fall through. */ |
4775 | ||
04c9666a | 4776 | case R_PPC64_REL30: |
5bd4f169 | 4777 | case R_PPC64_REL32: |
04c9666a | 4778 | case R_PPC64_REL64: |
65f38f15 AM |
4779 | case R_PPC64_ADDR14: |
4780 | case R_PPC64_ADDR14_BRNTAKEN: | |
4781 | case R_PPC64_ADDR14_BRTAKEN: | |
4782 | case R_PPC64_ADDR16: | |
4783 | case R_PPC64_ADDR16_DS: | |
4784 | case R_PPC64_ADDR16_HA: | |
4785 | case R_PPC64_ADDR16_HI: | |
4786 | case R_PPC64_ADDR16_HIGHER: | |
4787 | case R_PPC64_ADDR16_HIGHERA: | |
4788 | case R_PPC64_ADDR16_HIGHEST: | |
4789 | case R_PPC64_ADDR16_HIGHESTA: | |
4790 | case R_PPC64_ADDR16_LO: | |
4791 | case R_PPC64_ADDR16_LO_DS: | |
4792 | case R_PPC64_ADDR24: | |
65f38f15 | 4793 | case R_PPC64_ADDR32: |
65f38f15 AM |
4794 | case R_PPC64_UADDR16: |
4795 | case R_PPC64_UADDR32: | |
4796 | case R_PPC64_UADDR64: | |
5bd4f169 | 4797 | case R_PPC64_TOC: |
81848ca0 AM |
4798 | if (h != NULL && !info->shared) |
4799 | /* We may need a copy reloc. */ | |
f5385ebf | 4800 | h->non_got_ref = 1; |
81848ca0 | 4801 | |
41bd81ab | 4802 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4803 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4804 | break; |
e86ce104 | 4805 | |
65f38f15 AM |
4806 | /* If we are creating a shared library, and this is a reloc |
4807 | against a global symbol, or a non PC relative reloc | |
4808 | against a local symbol, then we need to copy the reloc | |
4809 | into the shared library. However, if we are linking with | |
4810 | -Bsymbolic, we do not need to copy a reloc against a | |
4811 | global symbol which is defined in an object we are | |
4812 | including in the link (i.e., DEF_REGULAR is set). At | |
4813 | this point we have not seen all the input files, so it is | |
4814 | possible that DEF_REGULAR is not set now but will be set | |
4815 | later (it is never cleared). In case of a weak definition, | |
4816 | DEF_REGULAR may be cleared later by a strong definition in | |
4817 | a shared library. We account for that possibility below by | |
f4656909 | 4818 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4819 | table entry. A similar situation occurs when creating |
4820 | shared libraries and symbol visibility changes render the | |
4821 | symbol local. | |
4822 | ||
4823 | If on the other hand, we are creating an executable, we | |
4824 | may need to keep relocations for symbols satisfied by a | |
4825 | dynamic library if we manage to avoid copy relocs for the | |
4826 | symbol. */ | |
411e1bfb | 4827 | dodyn: |
65f38f15 | 4828 | if ((info->shared |
411e1bfb | 4829 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4830 | || (h != NULL |
4831 | && (! info->symbolic | |
4832 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4833 | || !h->def_regular)))) |
f4656909 AM |
4834 | || (ELIMINATE_COPY_RELOCS |
4835 | && !info->shared | |
65f38f15 AM |
4836 | && h != NULL |
4837 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4838 | || !h->def_regular))) |
5bd4f169 | 4839 | { |
ec338859 AM |
4840 | struct ppc_dyn_relocs *p; |
4841 | struct ppc_dyn_relocs **head; | |
4842 | ||
65f38f15 AM |
4843 | /* We must copy these reloc types into the output file. |
4844 | Create a reloc section in dynobj and make room for | |
4845 | this reloc. */ | |
5bd4f169 AM |
4846 | if (sreloc == NULL) |
4847 | { | |
4848 | const char *name; | |
65f38f15 | 4849 | bfd *dynobj; |
5bd4f169 AM |
4850 | |
4851 | name = (bfd_elf_string_from_elf_section | |
4852 | (abfd, | |
4853 | elf_elfheader (abfd)->e_shstrndx, | |
4854 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4855 | if (name == NULL) | |
b34976b6 | 4856 | return FALSE; |
5bd4f169 | 4857 | |
0112cd26 | 4858 | if (! CONST_STRNEQ (name, ".rela") |
65f38f15 AM |
4859 | || strcmp (bfd_get_section_name (abfd, sec), |
4860 | name + 5) != 0) | |
4861 | { | |
4862 | (*_bfd_error_handler) | |
d003868e AM |
4863 | (_("%B: bad relocation section name `%s\'"), |
4864 | abfd, name); | |
5d1634d7 | 4865 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4866 | } |
4867 | ||
65f38f15 | 4868 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4869 | sreloc = bfd_get_section_by_name (dynobj, name); |
4870 | if (sreloc == NULL) | |
4871 | { | |
4872 | flagword flags; | |
4873 | ||
5bd4f169 | 4874 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4875 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4876 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4877 | sreloc = bfd_make_section_with_flags (dynobj, |
4878 | name, | |
4879 | flags); | |
5bd4f169 | 4880 | if (sreloc == NULL |
65f38f15 | 4881 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4882 | return FALSE; |
5bd4f169 | 4883 | } |
65f38f15 | 4884 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4885 | } |
4886 | ||
65f38f15 AM |
4887 | /* If this is a global symbol, we count the number of |
4888 | relocations we need for this symbol. */ | |
4889 | if (h != NULL) | |
4890 | { | |
ec338859 | 4891 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4892 | } |
4893 | else | |
4894 | { | |
ec338859 AM |
4895 | /* Track dynamic relocs needed for local syms too. |
4896 | We really need local syms available to do this | |
4897 | easily. Oh well. */ | |
4898 | ||
4899 | asection *s; | |
6edfbbad DJ |
4900 | void *vpp; |
4901 | ||
ec338859 AM |
4902 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4903 | sec, r_symndx); | |
4904 | if (s == NULL) | |
b34976b6 | 4905 | return FALSE; |
ec338859 | 4906 | |
6edfbbad DJ |
4907 | vpp = &elf_section_data (s)->local_dynrel; |
4908 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4909 | } |
ec338859 AM |
4910 | |
4911 | p = *head; | |
4912 | if (p == NULL || p->sec != sec) | |
4913 | { | |
4ce794b7 | 4914 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4915 | if (p == NULL) |
b34976b6 | 4916 | return FALSE; |
ec338859 AM |
4917 | p->next = *head; |
4918 | *head = p; | |
4919 | p->sec = sec; | |
4920 | p->count = 0; | |
4921 | p->pc_count = 0; | |
4922 | } | |
4923 | ||
4924 | p->count += 1; | |
411e1bfb | 4925 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4926 | p->pc_count += 1; |
65f38f15 | 4927 | } |
5bd4f169 | 4928 | break; |
65f38f15 AM |
4929 | |
4930 | default: | |
96e0dda4 | 4931 | break; |
5bd4f169 AM |
4932 | } |
4933 | } | |
4934 | ||
b34976b6 | 4935 | return TRUE; |
5bd4f169 AM |
4936 | } |
4937 | ||
8387904d AM |
4938 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4939 | of the code entry point, and its section. */ | |
4940 | ||
4941 | static bfd_vma | |
4942 | opd_entry_value (asection *opd_sec, | |
4943 | bfd_vma offset, | |
4944 | asection **code_sec, | |
4945 | bfd_vma *code_off) | |
4946 | { | |
4947 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4948 | Elf_Internal_Rela *relocs; |
8387904d | 4949 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4950 | bfd_vma val; |
8387904d | 4951 | |
4b85d634 AM |
4952 | /* No relocs implies we are linking a --just-symbols object. */ |
4953 | if (opd_sec->reloc_count == 0) | |
4954 | { | |
4955 | bfd_vma val; | |
4956 | ||
4957 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4958 | return (bfd_vma) -1; | |
3b36f7e6 | 4959 | |
4b85d634 AM |
4960 | if (code_sec != NULL) |
4961 | { | |
4962 | asection *sec, *likely = NULL; | |
4963 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4964 | if (sec->vma <= val | |
4965 | && (sec->flags & SEC_LOAD) != 0 | |
4966 | && (sec->flags & SEC_ALLOC) != 0) | |
4967 | likely = sec; | |
4968 | if (likely != NULL) | |
4969 | { | |
4970 | *code_sec = likely; | |
4971 | if (code_off != NULL) | |
4972 | *code_off = val - likely->vma; | |
4973 | } | |
4974 | } | |
4975 | return val; | |
4976 | } | |
4977 | ||
8860955f AM |
4978 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4979 | if (relocs == NULL) | |
4980 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4981 | |
8387904d | 4982 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4983 | lo = relocs; |
8387904d AM |
4984 | BFD_ASSERT (lo != NULL); |
4985 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4986 | val = (bfd_vma) -1; |
8387904d AM |
4987 | while (lo < hi) |
4988 | { | |
4989 | look = lo + (hi - lo) / 2; | |
4990 | if (look->r_offset < offset) | |
4991 | lo = look + 1; | |
4992 | else if (look->r_offset > offset) | |
4993 | hi = look; | |
4994 | else | |
4995 | { | |
4996 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4997 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4998 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4999 | { | |
5000 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5001 | asection *sec; |
5002 | ||
5003 | if (symndx < symtab_hdr->sh_info) | |
5004 | { | |
5005 | Elf_Internal_Sym *sym; | |
5006 | ||
5007 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5008 | if (sym == NULL) | |
5009 | { | |
5010 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5011 | symtab_hdr->sh_info, | |
5012 | 0, NULL, NULL, NULL); | |
5013 | if (sym == NULL) | |
645ea6a9 | 5014 | break; |
8387904d AM |
5015 | symtab_hdr->contents = (bfd_byte *) sym; |
5016 | } | |
5017 | ||
5018 | sym += symndx; | |
5019 | val = sym->st_value; | |
5020 | sec = NULL; | |
5021 | if ((sym->st_shndx != SHN_UNDEF | |
5022 | && sym->st_shndx < SHN_LORESERVE) | |
5023 | || sym->st_shndx > SHN_HIRESERVE) | |
5024 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5025 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5026 | } | |
5027 | else | |
5028 | { | |
5029 | struct elf_link_hash_entry **sym_hashes; | |
5030 | struct elf_link_hash_entry *rh; | |
5031 | ||
5032 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5033 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5034 | while (rh->root.type == bfd_link_hash_indirect | |
5035 | || rh->root.type == bfd_link_hash_warning) | |
5036 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5037 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5038 | || rh->root.type == bfd_link_hash_defweak); | |
5039 | val = rh->root.u.def.value; | |
5040 | sec = rh->root.u.def.section; | |
5041 | } | |
5042 | val += look->r_addend; | |
5043 | if (code_off != NULL) | |
5044 | *code_off = val; | |
5045 | if (code_sec != NULL) | |
5046 | *code_sec = sec; | |
5047 | if (sec != NULL && sec->output_section != NULL) | |
5048 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5049 | } |
5050 | break; | |
5051 | } | |
5052 | } | |
645ea6a9 | 5053 | |
645ea6a9 | 5054 | return val; |
8387904d AM |
5055 | } |
5056 | ||
64d03ab5 AM |
5057 | /* Mark sections containing dynamically referenced symbols. When |
5058 | building shared libraries, we must assume that any visible symbol is | |
5059 | referenced. */ | |
5060 | ||
5061 | static bfd_boolean | |
5062 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5063 | { | |
5064 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5065 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5066 | ||
5067 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5068 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5069 | ||
5070 | /* Dynamic linking info is on the func descriptor sym. */ | |
5071 | if (eh->oh != NULL | |
5072 | && eh->oh->is_func_descriptor | |
5073 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5074 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5075 | eh = eh->oh; | |
5076 | ||
5077 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5078 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5079 | && (eh->elf.ref_dynamic | |
5080 | || (!info->executable | |
5081 | && eh->elf.def_regular | |
5082 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5083 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5084 | { | |
5085 | asection *code_sec; | |
5086 | ||
5087 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5088 | ||
5089 | /* Function descriptor syms cause the associated | |
5090 | function code sym section to be marked. */ | |
5091 | if (eh->is_func_descriptor | |
5092 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5093 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5094 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5095 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5096 | && opd_entry_value (eh->elf.root.u.def.section, | |
5097 | eh->elf.root.u.def.value, | |
5098 | &code_sec, NULL) != (bfd_vma) -1) | |
5099 | code_sec->flags |= SEC_KEEP; | |
5100 | } | |
5101 | ||
5102 | return TRUE; | |
5103 | } | |
5104 | ||
5bd4f169 AM |
5105 | /* Return the section that should be marked against GC for a given |
5106 | relocation. */ | |
5107 | ||
5108 | static asection * | |
4ce794b7 | 5109 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 5110 | struct bfd_link_info *info, |
4ce794b7 AM |
5111 | Elf_Internal_Rela *rel, |
5112 | struct elf_link_hash_entry *h, | |
5113 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5114 | { |
ccfa59ea AM |
5115 | asection *rsec; |
5116 | ||
5117 | /* First mark all our entry sym sections. */ | |
5118 | if (info->gc_sym_list != NULL) | |
5119 | { | |
5120 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5121 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
5122 | ||
5123 | info->gc_sym_list = NULL; | |
b56cbdb9 | 5124 | for (; sym != NULL; sym = sym->next) |
ccfa59ea AM |
5125 | { |
5126 | struct ppc_link_hash_entry *eh; | |
5127 | ||
5128 | eh = (struct ppc_link_hash_entry *) | |
5129 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5130 | if (eh == NULL) | |
5131 | continue; | |
5132 | if (eh->elf.root.type != bfd_link_hash_defined | |
5133 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5134 | continue; | |
5135 | ||
c4f68ce3 AM |
5136 | if (eh->is_func_descriptor |
5137 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5138 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5139 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
5140 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5141 | && opd_entry_value (eh->elf.root.u.def.section, | |
5142 | eh->elf.root.u.def.value, | |
5143 | &rsec, NULL) != (bfd_vma) -1) | |
5144 | ; | |
ccfa59ea AM |
5145 | else |
5146 | continue; | |
5147 | ||
5148 | if (!rsec->gc_mark) | |
5149 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5150 | ||
5151 | rsec = eh->elf.root.u.def.section; | |
5152 | if (!rsec->gc_mark) | |
5153 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
ccfa59ea | 5154 | } |
ccfa59ea AM |
5155 | } |
5156 | ||
5157 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
5158 | function sections, as all functions are referenced in .opd. */ | |
5159 | rsec = NULL; | |
5160 | if (get_opd_info (sec) != NULL) | |
5161 | return rsec; | |
1e2f5b6e | 5162 | |
5bd4f169 AM |
5163 | if (h != NULL) |
5164 | { | |
04c9666a | 5165 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5166 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5167 | |
4ce794b7 | 5168 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5169 | switch (r_type) |
5bd4f169 AM |
5170 | { |
5171 | case R_PPC64_GNU_VTINHERIT: | |
5172 | case R_PPC64_GNU_VTENTRY: | |
5173 | break; | |
5174 | ||
5175 | default: | |
5176 | switch (h->root.type) | |
5177 | { | |
5178 | case bfd_link_hash_defined: | |
5179 | case bfd_link_hash_defweak: | |
ccfa59ea | 5180 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5181 | if (eh->oh != NULL |
5182 | && eh->oh->is_func_descriptor | |
5183 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5184 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5185 | eh = eh->oh; |
1e2f5b6e AM |
5186 | |
5187 | /* Function descriptor syms cause the associated | |
5188 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5189 | if (eh->is_func_descriptor |
5190 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5191 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5192 | { |
5193 | /* They also mark their opd section. */ | |
5194 | if (!eh->elf.root.u.def.section->gc_mark) | |
5195 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5196 | ppc64_elf_gc_mark_hook); | |
5197 | ||
5198 | rsec = eh->oh->elf.root.u.def.section; | |
5199 | } | |
8387904d AM |
5200 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5201 | && opd_entry_value (eh->elf.root.u.def.section, | |
5202 | eh->elf.root.u.def.value, | |
5203 | &rsec, NULL) != (bfd_vma) -1) | |
5204 | { | |
5205 | if (!eh->elf.root.u.def.section->gc_mark) | |
5206 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5207 | ppc64_elf_gc_mark_hook); | |
5208 | } | |
ccfa59ea | 5209 | else |
1e2f5b6e AM |
5210 | rsec = h->root.u.def.section; |
5211 | break; | |
5bd4f169 AM |
5212 | |
5213 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5214 | rsec = h->root.u.c.p->section; |
5215 | break; | |
5bd4f169 AM |
5216 | |
5217 | default: | |
5218 | break; | |
5219 | } | |
5220 | } | |
5221 | } | |
5222 | else | |
5223 | { | |
1e2f5b6e AM |
5224 | asection **opd_sym_section; |
5225 | ||
5226 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5227 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5228 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5229 | { |
5230 | if (!rsec->gc_mark) | |
5231 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5232 | ||
b4f4e59f | 5233 | rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5234 | } |
5bd4f169 AM |
5235 | } |
5236 | ||
1e2f5b6e | 5237 | return rsec; |
5bd4f169 AM |
5238 | } |
5239 | ||
65f38f15 AM |
5240 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5241 | section being removed. */ | |
5bd4f169 | 5242 | |
b34976b6 | 5243 | static bfd_boolean |
4ce794b7 AM |
5244 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5245 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5246 | { |
411e1bfb | 5247 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5248 | Elf_Internal_Shdr *symtab_hdr; |
5249 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5250 | struct got_entry **local_got_ents; |
5bd4f169 | 5251 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5252 | |
680a3378 AM |
5253 | if ((sec->flags & SEC_ALLOC) == 0) |
5254 | return TRUE; | |
5255 | ||
ec338859 AM |
5256 | elf_section_data (sec)->local_dynrel = NULL; |
5257 | ||
411e1bfb | 5258 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5259 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5260 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5261 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5262 | |
5263 | relend = relocs + sec->reloc_count; | |
5264 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5265 | { |
5266 | unsigned long r_symndx; | |
04c9666a | 5267 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5268 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5269 | char tls_type = 0; |
5bd4f169 | 5270 | |
a33d1f77 | 5271 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5272 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5273 | if (r_symndx >= symtab_hdr->sh_info) |
5274 | { | |
5275 | struct ppc_link_hash_entry *eh; | |
5276 | struct ppc_dyn_relocs **pp; | |
5277 | struct ppc_dyn_relocs *p; | |
5278 | ||
5279 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5280 | while (h->root.type == bfd_link_hash_indirect |
5281 | || h->root.type == bfd_link_hash_warning) | |
5282 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5283 | eh = (struct ppc_link_hash_entry *) h; |
5284 | ||
5285 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5286 | if (p->sec == sec) | |
5287 | { | |
5288 | /* Everything must go for SEC. */ | |
5289 | *pp = p->next; | |
5290 | break; | |
5291 | } | |
5292 | } | |
5293 | ||
a33d1f77 AM |
5294 | switch (r_type) |
5295 | { | |
411e1bfb AM |
5296 | case R_PPC64_GOT_TLSLD16: |
5297 | case R_PPC64_GOT_TLSLD16_LO: | |
5298 | case R_PPC64_GOT_TLSLD16_HI: | |
5299 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5300 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5301 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5302 | goto dogot; |
5303 | ||
5304 | case R_PPC64_GOT_TLSGD16: | |
5305 | case R_PPC64_GOT_TLSGD16_LO: | |
5306 | case R_PPC64_GOT_TLSGD16_HI: | |
5307 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5308 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5309 | goto dogot; |
5310 | ||
5311 | case R_PPC64_GOT_TPREL16_DS: | |
5312 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5313 | case R_PPC64_GOT_TPREL16_HI: | |
5314 | case R_PPC64_GOT_TPREL16_HA: | |
5315 | tls_type = TLS_TLS | TLS_TPREL; | |
5316 | goto dogot; | |
5317 | ||
5318 | case R_PPC64_GOT_DTPREL16_DS: | |
5319 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5320 | case R_PPC64_GOT_DTPREL16_HI: | |
5321 | case R_PPC64_GOT_DTPREL16_HA: | |
5322 | tls_type = TLS_TLS | TLS_DTPREL; | |
5323 | goto dogot; | |
5324 | ||
a33d1f77 AM |
5325 | case R_PPC64_GOT16: |
5326 | case R_PPC64_GOT16_DS: | |
5327 | case R_PPC64_GOT16_HA: | |
5328 | case R_PPC64_GOT16_HI: | |
5329 | case R_PPC64_GOT16_LO: | |
5330 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5331 | dogot: |
5332 | { | |
5333 | struct got_entry *ent; | |
5334 | ||
58ac9f71 AM |
5335 | if (h != NULL) |
5336 | ent = h->got.glist; | |
411e1bfb AM |
5337 | else |
5338 | ent = local_got_ents[r_symndx]; | |
5339 | ||
5340 | for (; ent != NULL; ent = ent->next) | |
5341 | if (ent->addend == rel->r_addend | |
e717da7e | 5342 | && ent->owner == abfd |
411e1bfb AM |
5343 | && ent->tls_type == tls_type) |
5344 | break; | |
5345 | if (ent == NULL) | |
5346 | abort (); | |
5347 | if (ent->got.refcount > 0) | |
5348 | ent->got.refcount -= 1; | |
5349 | } | |
a33d1f77 | 5350 | break; |
65f38f15 | 5351 | |
a33d1f77 AM |
5352 | case R_PPC64_PLT16_HA: |
5353 | case R_PPC64_PLT16_HI: | |
5354 | case R_PPC64_PLT16_LO: | |
5355 | case R_PPC64_PLT32: | |
5356 | case R_PPC64_PLT64: | |
721956f4 AM |
5357 | case R_PPC64_REL14: |
5358 | case R_PPC64_REL14_BRNTAKEN: | |
5359 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5360 | case R_PPC64_REL24: |
58ac9f71 | 5361 | if (h != NULL) |
5d1634d7 | 5362 | { |
411e1bfb AM |
5363 | struct plt_entry *ent; |
5364 | ||
411e1bfb AM |
5365 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5366 | if (ent->addend == rel->r_addend) | |
5367 | break; | |
5368 | if (ent == NULL) | |
5369 | abort (); | |
5370 | if (ent->plt.refcount > 0) | |
5371 | ent->plt.refcount -= 1; | |
5d1634d7 | 5372 | } |
e86ce104 | 5373 | break; |
5d1634d7 | 5374 | |
a33d1f77 AM |
5375 | default: |
5376 | break; | |
5377 | } | |
5378 | } | |
b34976b6 | 5379 | return TRUE; |
5bd4f169 AM |
5380 | } |
5381 | ||
deb0e272 AM |
5382 | /* The maximum size of .sfpr. */ |
5383 | #define SFPR_MAX (218*4) | |
5384 | ||
5385 | struct sfpr_def_parms | |
5386 | { | |
699733f6 AM |
5387 | const char name[12]; |
5388 | unsigned char lo, hi; | |
deb0e272 AM |
5389 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5390 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5391 | }; | |
5392 | ||
5393 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5394 | ||
5395 | static unsigned int | |
5396 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5397 | { | |
5398 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5399 | unsigned int i; | |
5400 | size_t len = strlen (parm->name); | |
5401 | bfd_boolean writing = FALSE; | |
699733f6 | 5402 | char sym[16]; |
deb0e272 AM |
5403 | |
5404 | memcpy (sym, parm->name, len); | |
5405 | sym[len + 2] = 0; | |
5406 | ||
5407 | for (i = parm->lo; i <= parm->hi; i++) | |
5408 | { | |
5409 | struct elf_link_hash_entry *h; | |
5410 | ||
5411 | sym[len + 0] = i / 10 + '0'; | |
5412 | sym[len + 1] = i % 10 + '0'; | |
5413 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5414 | if (h != NULL | |
f5385ebf | 5415 | && !h->def_regular) |
deb0e272 AM |
5416 | { |
5417 | h->root.type = bfd_link_hash_defined; | |
5418 | h->root.u.def.section = htab->sfpr; | |
5419 | h->root.u.def.value = htab->sfpr->size; | |
5420 | h->type = STT_FUNC; | |
f5385ebf | 5421 | h->def_regular = 1; |
deb0e272 AM |
5422 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5423 | writing = TRUE; | |
5424 | if (htab->sfpr->contents == NULL) | |
5425 | { | |
5426 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5427 | if (htab->sfpr->contents == NULL) | |
5428 | return FALSE; | |
5429 | } | |
5430 | } | |
5431 | if (writing) | |
5432 | { | |
5433 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5434 | if (i != parm->hi) | |
5435 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5436 | else | |
5437 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5438 | htab->sfpr->size = p - htab->sfpr->contents; | |
5439 | } | |
5440 | } | |
5441 | ||
5442 | return TRUE; | |
5443 | } | |
5444 | ||
5445 | static bfd_byte * | |
5446 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5447 | { | |
5448 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5449 | return p + 4; | |
5450 | } | |
5451 | ||
5452 | static bfd_byte * | |
5453 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5454 | { | |
5455 | p = savegpr0 (abfd, p, r); | |
5456 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5457 | p = p + 4; | |
5458 | bfd_put_32 (abfd, BLR, p); | |
5459 | return p + 4; | |
5460 | } | |
5461 | ||
5462 | static bfd_byte * | |
5463 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5464 | { | |
5465 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5466 | return p + 4; | |
5467 | } | |
5468 | ||
5469 | static bfd_byte * | |
5470 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5471 | { | |
5472 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5473 | p = p + 4; | |
5474 | p = restgpr0 (abfd, p, r); | |
5475 | bfd_put_32 (abfd, MTLR_R0, p); | |
5476 | p = p + 4; | |
5477 | if (r == 29) | |
5478 | { | |
5479 | p = restgpr0 (abfd, p, 30); | |
5480 | p = restgpr0 (abfd, p, 31); | |
5481 | } | |
5482 | bfd_put_32 (abfd, BLR, p); | |
5483 | return p + 4; | |
5484 | } | |
5485 | ||
5486 | static bfd_byte * | |
5487 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5488 | { | |
5489 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5490 | return p + 4; | |
5491 | } | |
5492 | ||
5493 | static bfd_byte * | |
5494 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5495 | { | |
5496 | p = savegpr1 (abfd, p, r); | |
5497 | bfd_put_32 (abfd, BLR, p); | |
5498 | return p + 4; | |
5499 | } | |
5500 | ||
5501 | static bfd_byte * | |
5502 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5503 | { | |
5504 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5505 | return p + 4; | |
5506 | } | |
5507 | ||
5508 | static bfd_byte * | |
5509 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5510 | { | |
5511 | p = restgpr1 (abfd, p, r); | |
5512 | bfd_put_32 (abfd, BLR, p); | |
5513 | return p + 4; | |
5514 | } | |
5515 | ||
5516 | static bfd_byte * | |
5517 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5518 | { | |
5519 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5520 | return p + 4; | |
5521 | } | |
5522 | ||
5523 | static bfd_byte * | |
5524 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5525 | { | |
5526 | p = savefpr (abfd, p, r); | |
5527 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5528 | p = p + 4; | |
5529 | bfd_put_32 (abfd, BLR, p); | |
5530 | return p + 4; | |
5531 | } | |
5532 | ||
5533 | static bfd_byte * | |
5534 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5535 | { | |
5536 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5537 | return p + 4; | |
5538 | } | |
5539 | ||
5540 | static bfd_byte * | |
5541 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5542 | { | |
5543 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5544 | p = p + 4; | |
5545 | p = restfpr (abfd, p, r); | |
5546 | bfd_put_32 (abfd, MTLR_R0, p); | |
5547 | p = p + 4; | |
5548 | if (r == 29) | |
5549 | { | |
5550 | p = restfpr (abfd, p, 30); | |
5551 | p = restfpr (abfd, p, 31); | |
5552 | } | |
5553 | bfd_put_32 (abfd, BLR, p); | |
5554 | return p + 4; | |
5555 | } | |
5556 | ||
5557 | static bfd_byte * | |
5558 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5559 | { | |
5560 | p = savefpr (abfd, p, r); | |
5561 | bfd_put_32 (abfd, BLR, p); | |
5562 | return p + 4; | |
5563 | } | |
5564 | ||
5565 | static bfd_byte * | |
5566 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5567 | { | |
5568 | p = restfpr (abfd, p, r); | |
5569 | bfd_put_32 (abfd, BLR, p); | |
5570 | return p + 4; | |
5571 | } | |
5572 | ||
5573 | static bfd_byte * | |
5574 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5575 | { | |
5576 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5577 | p = p + 4; | |
5578 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5579 | return p + 4; | |
5580 | } | |
5581 | ||
5582 | static bfd_byte * | |
5583 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5584 | { | |
5585 | p = savevr (abfd, p, r); | |
5586 | bfd_put_32 (abfd, BLR, p); | |
5587 | return p + 4; | |
5588 | } | |
5589 | ||
5590 | static bfd_byte * | |
5591 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5592 | { | |
5593 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5594 | p = p + 4; | |
5595 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5596 | return p + 4; | |
5597 | } | |
5598 | ||
5599 | static bfd_byte * | |
5600 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5601 | { | |
5602 | p = restvr (abfd, p, r); | |
5603 | bfd_put_32 (abfd, BLR, p); | |
5604 | return p + 4; | |
5605 | } | |
5606 | ||
e86ce104 AM |
5607 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5608 | information on function code symbol entries to their corresponding | |
5609 | function descriptor symbol entries. */ | |
deb0e272 | 5610 | |
b34976b6 | 5611 | static bfd_boolean |
4ce794b7 | 5612 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5613 | { |
e86ce104 | 5614 | struct bfd_link_info *info; |
65f38f15 | 5615 | struct ppc_link_hash_table *htab; |
411e1bfb | 5616 | struct plt_entry *ent; |
50bc7936 AM |
5617 | struct ppc_link_hash_entry *fh; |
5618 | struct ppc_link_hash_entry *fdh; | |
5619 | bfd_boolean force_local; | |
5bd4f169 | 5620 | |
50bc7936 AM |
5621 | fh = (struct ppc_link_hash_entry *) h; |
5622 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5623 | return TRUE; |
e86ce104 | 5624 | |
50bc7936 AM |
5625 | if (fh->elf.root.type == bfd_link_hash_warning) |
5626 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5627 | |
4ce794b7 | 5628 | info = inf; |
65f38f15 | 5629 | htab = ppc_hash_table (info); |
5bd4f169 | 5630 | |
c09bdfe5 AM |
5631 | /* Resolve undefined references to dot-symbols as the value |
5632 | in the function descriptor, if we have one in a regular object. | |
5633 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5634 | in dynamic objects are handled elsewhere. */ | |
5635 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5636 | && fh->was_undefined | |
5637 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5638 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5639 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5640 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5641 | fh->oh->elf.root.u.def.value, | |
5642 | &fh->elf.root.u.def.section, | |
5643 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5644 | { | |
5645 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5646 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5647 | } |
5648 | ||
e86ce104 AM |
5649 | /* If this is a function code symbol, transfer dynamic linking |
5650 | information to the function descriptor symbol. */ | |
50bc7936 | 5651 | if (!fh->is_func) |
b34976b6 | 5652 | return TRUE; |
e86ce104 | 5653 | |
50bc7936 | 5654 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5655 | if (ent->plt.refcount > 0) |
5656 | break; | |
50bc7936 AM |
5657 | if (ent == NULL |
5658 | || fh->elf.root.root.string[0] != '.' | |
5659 | || fh->elf.root.root.string[1] == '\0') | |
5660 | return TRUE; | |
5bd4f169 | 5661 | |
50bc7936 AM |
5662 | /* Find the corresponding function descriptor symbol. Create it |
5663 | as undefined if necessary. */ | |
5bd4f169 | 5664 | |
50bc7936 AM |
5665 | fdh = get_fdh (fh, htab); |
5666 | if (fdh != NULL) | |
5667 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5668 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5669 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5670 | |
50bc7936 AM |
5671 | if (fdh == NULL |
5672 | && info->shared | |
5673 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5674 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5675 | { | |
908b32fc | 5676 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5677 | if (fdh == NULL) |
5678 | return FALSE; | |
50bc7936 | 5679 | } |
648cca2c | 5680 | |
908b32fc | 5681 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5682 | code symbol is strong undefined, make the fake sym the same. |
5683 | If the function code symbol is defined, then force the fake | |
5684 | descriptor local; We can't support overriding of symbols in a | |
5685 | shared library on a fake descriptor. */ | |
908b32fc AM |
5686 | |
5687 | if (fdh != NULL | |
5688 | && fdh->fake | |
433817dd | 5689 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5690 | { |
433817dd AM |
5691 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5692 | { | |
5693 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5694 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5695 | } | |
5696 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5697 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5698 | { | |
5699 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5700 | } | |
908b32fc AM |
5701 | } |
5702 | ||
50bc7936 | 5703 | if (fdh != NULL |
f5385ebf | 5704 | && !fdh->elf.forced_local |
50bc7936 | 5705 | && (info->shared |
f5385ebf AM |
5706 | || fdh->elf.def_dynamic |
5707 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5708 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5709 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5710 | { | |
5711 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5712 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5713 | return FALSE; |
f5385ebf AM |
5714 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5715 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5716 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5717 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5718 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5719 | { |
40d16e0b | 5720 | move_plt_plist (fh, fdh); |
f5385ebf | 5721 | fdh->elf.needs_plt = 1; |
e86ce104 | 5722 | } |
50bc7936 | 5723 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5724 | fdh->oh = fh; |
5725 | fh->oh = fdh; | |
e86ce104 AM |
5726 | } |
5727 | ||
50bc7936 AM |
5728 | /* Now that the info is on the function descriptor, clear the |
5729 | function code sym info. Any function code syms for which we | |
5730 | don't have a definition in a regular file, we force local. | |
5731 | This prevents a shared library from exporting syms that have | |
5732 | been imported from another library. Function code syms that | |
5733 | are really in the library we must leave global to prevent the | |
5734 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5735 | force_local = (!fh->elf.def_regular |
5736 | || fdh == NULL | |
5737 | || !fdh->elf.def_regular | |
5738 | || fdh->elf.forced_local); | |
50bc7936 AM |
5739 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5740 | ||
b34976b6 | 5741 | return TRUE; |
e86ce104 | 5742 | } |
40b8271b | 5743 | |
e86ce104 | 5744 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5745 | this hook to a) provide some gcc support functions, and b) transfer |
5746 | dynamic linking information gathered so far on function code symbol | |
5747 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5748 | |
b34976b6 | 5749 | static bfd_boolean |
4ce794b7 AM |
5750 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5751 | struct bfd_link_info *info) | |
e86ce104 AM |
5752 | { |
5753 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5754 | unsigned int i; |
deb0e272 AM |
5755 | const struct sfpr_def_parms funcs[] = |
5756 | { | |
5757 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5758 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5759 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5760 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5761 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5762 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5763 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5764 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5765 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5766 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5767 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5768 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5769 | }; | |
e86ce104 AM |
5770 | |
5771 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5772 | if (htab->sfpr == NULL) |
5773 | /* We don't have any relocs. */ | |
b34976b6 | 5774 | return TRUE; |
82bd7b59 | 5775 | |
deb0e272 AM |
5776 | /* Provide any missing _save* and _rest* functions. */ |
5777 | htab->sfpr->size = 0; | |
5778 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5779 | if (!sfpr_define (info, &funcs[i])) | |
5780 | return FALSE; | |
82bd7b59 | 5781 | |
4ce794b7 | 5782 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5783 | |
eea6121a | 5784 | if (htab->sfpr->size == 0) |
8423293d | 5785 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5786 | |
b34976b6 | 5787 | return TRUE; |
e86ce104 AM |
5788 | } |
5789 | ||
5790 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5791 | regular object. The current definition is in some section of the | |
5792 | dynamic object, but we're not including those sections. We have to | |
5793 | change the definition to something the rest of the link can | |
5794 | understand. */ | |
5795 | ||
b34976b6 | 5796 | static bfd_boolean |
4ce794b7 AM |
5797 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5798 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5799 | { |
5800 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5801 | asection *s; |
5802 | unsigned int power_of_two; | |
5803 | ||
5804 | htab = ppc_hash_table (info); | |
5805 | ||
5806 | /* Deal with function syms. */ | |
5807 | if (h->type == STT_FUNC | |
f5385ebf | 5808 | || h->needs_plt) |
e86ce104 AM |
5809 | { |
5810 | /* Clear procedure linkage table information for any symbol that | |
5811 | won't need a .plt entry. */ | |
411e1bfb AM |
5812 | struct plt_entry *ent; |
5813 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5814 | if (ent->plt.refcount > 0) | |
5815 | break; | |
8387904d | 5816 | if (ent == NULL |
9c7a29a3 AM |
5817 | || SYMBOL_CALLS_LOCAL (info, h) |
5818 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5819 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5820 | { |
411e1bfb | 5821 | h->plt.plist = NULL; |
f5385ebf | 5822 | h->needs_plt = 0; |
40b8271b | 5823 | } |
5bd4f169 | 5824 | } |
bbd7ec4a | 5825 | else |
411e1bfb | 5826 | h->plt.plist = NULL; |
5bd4f169 AM |
5827 | |
5828 | /* If this is a weak symbol, and there is a real definition, the | |
5829 | processor independent code will have arranged for us to see the | |
5830 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5831 | if (h->u.weakdef != NULL) |
5bd4f169 | 5832 | { |
f6e332e6 AM |
5833 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5834 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5835 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5836 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5837 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5838 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5839 | return TRUE; |
5bd4f169 AM |
5840 | } |
5841 | ||
5bd4f169 AM |
5842 | /* If we are creating a shared library, we must presume that the |
5843 | only references to the symbol are via the global offset table. | |
5844 | For such cases we need not do anything here; the relocations will | |
5845 | be handled correctly by relocate_section. */ | |
5846 | if (info->shared) | |
b34976b6 | 5847 | return TRUE; |
5bd4f169 | 5848 | |
65f38f15 AM |
5849 | /* If there are no references to this symbol that do not use the |
5850 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5851 | if (!h->non_got_ref) |
b34976b6 | 5852 | return TRUE; |
65f38f15 | 5853 | |
f4656909 | 5854 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5855 | { |
f4656909 AM |
5856 | struct ppc_link_hash_entry * eh; |
5857 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5858 | |
f4656909 AM |
5859 | eh = (struct ppc_link_hash_entry *) h; |
5860 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5861 | { | |
5862 | s = p->sec->output_section; | |
5863 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5864 | break; | |
5865 | } | |
5866 | ||
5867 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5868 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5869 | if (p == NULL) | |
5870 | { | |
f5385ebf | 5871 | h->non_got_ref = 0; |
f4656909 AM |
5872 | return TRUE; |
5873 | } | |
65f38f15 AM |
5874 | } |
5875 | ||
5d35169e | 5876 | if (h->plt.plist != NULL) |
97b639ba AM |
5877 | { |
5878 | /* We should never get here, but unfortunately there are versions | |
5879 | of gcc out there that improperly (for this ABI) put initialized | |
5880 | function pointers, vtable refs and suchlike in read-only | |
5881 | sections. Allow them to proceed, but warn that this might | |
5882 | break at runtime. */ | |
5883 | (*_bfd_error_handler) | |
5884 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5885 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5886 | h->root.root.string); | |
5887 | } | |
5d35169e AM |
5888 | |
5889 | /* This is a reference to a symbol defined by a dynamic object which | |
5890 | is not a function. */ | |
5891 | ||
909272ee AM |
5892 | if (h->size == 0) |
5893 | { | |
5894 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5895 | h->root.root.string); | |
5896 | return TRUE; | |
5897 | } | |
5898 | ||
5bd4f169 AM |
5899 | /* We must allocate the symbol in our .dynbss section, which will |
5900 | become part of the .bss section of the executable. There will be | |
5901 | an entry for this symbol in the .dynsym section. The dynamic | |
5902 | object will contain position independent code, so all references | |
5903 | from the dynamic object to this symbol will go through the global | |
5904 | offset table. The dynamic linker will use the .dynsym entry to | |
5905 | determine the address it must put in the global offset table, so | |
5906 | both the dynamic object and the regular object will refer to the | |
5907 | same memory location for the variable. */ | |
5bd4f169 | 5908 | |
04c9666a AM |
5909 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5910 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5911 | runtime process image. We need to remember the offset into the |
5912 | .rela.bss section we are going to use. */ | |
5913 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5914 | { | |
eea6121a | 5915 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5916 | h->needs_copy = 1; |
5bd4f169 AM |
5917 | } |
5918 | ||
5919 | /* We need to figure out the alignment required for this symbol. I | |
5920 | have no idea how ELF linkers handle this. */ | |
5921 | power_of_two = bfd_log2 (h->size); | |
5922 | if (power_of_two > 4) | |
5923 | power_of_two = 4; | |
5924 | ||
5925 | /* Apply the required alignment. */ | |
4ce794b7 | 5926 | s = htab->dynbss; |
eea6121a | 5927 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5928 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5929 | { |
65f38f15 | 5930 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5931 | return FALSE; |
5bd4f169 AM |
5932 | } |
5933 | ||
5934 | /* Define the symbol as being at this point in the section. */ | |
5935 | h->root.u.def.section = s; | |
eea6121a | 5936 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5937 | |
5938 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5939 | s->size += h->size; |
5bd4f169 | 5940 | |
b34976b6 | 5941 | return TRUE; |
5bd4f169 AM |
5942 | } |
5943 | ||
e86ce104 AM |
5944 | /* If given a function descriptor symbol, hide both the function code |
5945 | sym and the descriptor. */ | |
5946 | static void | |
4ce794b7 AM |
5947 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5948 | struct elf_link_hash_entry *h, | |
5949 | bfd_boolean force_local) | |
e86ce104 | 5950 | { |
34814b9f | 5951 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5952 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5953 | ||
34814b9f AM |
5954 | eh = (struct ppc_link_hash_entry *) h; |
5955 | if (eh->is_func_descriptor) | |
e86ce104 | 5956 | { |
34814b9f | 5957 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5958 | |
721956f4 | 5959 | if (fh == NULL) |
d1329ca3 AM |
5960 | { |
5961 | const char *p, *q; | |
5962 | struct ppc_link_hash_table *htab; | |
5963 | char save; | |
5964 | ||
5965 | /* We aren't supposed to use alloca in BFD because on | |
5966 | systems which do not have alloca the version in libiberty | |
5967 | calls xmalloc, which might cause the program to crash | |
5968 | when it runs out of memory. This function doesn't have a | |
5969 | return status, so there's no way to gracefully return an | |
5970 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5971 | accessed; It's either a string in an ELF string table, |
5972 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5973 | |
34814b9f | 5974 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5975 | save = *p; |
5976 | *(char *) p = '.'; | |
5977 | htab = ppc_hash_table (info); | |
34814b9f AM |
5978 | fh = (struct ppc_link_hash_entry *) |
5979 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5980 | *(char *) p = save; |
5981 | ||
5982 | /* Unfortunately, if it so happens that the string we were | |
5983 | looking for was allocated immediately before this string, | |
5984 | then we overwrote the string terminator. That's the only | |
5985 | reason the lookup should fail. */ | |
5986 | if (fh == NULL) | |
5987 | { | |
34814b9f AM |
5988 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5989 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5990 | --q, --p; |
34814b9f AM |
5991 | if (q < eh->elf.root.root.string && *p == '.') |
5992 | fh = (struct ppc_link_hash_entry *) | |
5993 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5994 | } |
5995 | if (fh != NULL) | |
5996 | { | |
34814b9f AM |
5997 | eh->oh = fh; |
5998 | fh->oh = eh; | |
d1329ca3 AM |
5999 | } |
6000 | } | |
e86ce104 | 6001 | if (fh != NULL) |
34814b9f | 6002 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6003 | } |
6004 | } | |
6005 | ||
411e1bfb | 6006 | static bfd_boolean |
8843416a AM |
6007 | get_sym_h (struct elf_link_hash_entry **hp, |
6008 | Elf_Internal_Sym **symp, | |
6009 | asection **symsecp, | |
6010 | char **tls_maskp, | |
6011 | Elf_Internal_Sym **locsymsp, | |
6012 | unsigned long r_symndx, | |
6013 | bfd *ibfd) | |
411e1bfb AM |
6014 | { |
6015 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6016 | ||
6017 | if (r_symndx >= symtab_hdr->sh_info) | |
6018 | { | |
6019 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6020 | struct elf_link_hash_entry *h; | |
6021 | ||
6022 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6023 | while (h->root.type == bfd_link_hash_indirect | |
6024 | || h->root.type == bfd_link_hash_warning) | |
6025 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6026 | ||
6027 | if (hp != NULL) | |
6028 | *hp = h; | |
6029 | ||
6030 | if (symp != NULL) | |
6031 | *symp = NULL; | |
6032 | ||
6033 | if (symsecp != NULL) | |
6034 | { | |
6035 | asection *symsec = NULL; | |
6036 | if (h->root.type == bfd_link_hash_defined | |
6037 | || h->root.type == bfd_link_hash_defweak) | |
6038 | symsec = h->root.u.def.section; | |
6039 | *symsecp = symsec; | |
6040 | } | |
6041 | ||
e7b938ca | 6042 | if (tls_maskp != NULL) |
411e1bfb AM |
6043 | { |
6044 | struct ppc_link_hash_entry *eh; | |
6045 | ||
6046 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6047 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6048 | } |
6049 | } | |
6050 | else | |
6051 | { | |
6052 | Elf_Internal_Sym *sym; | |
6053 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6054 | ||
6055 | if (locsyms == NULL) | |
6056 | { | |
6057 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6058 | if (locsyms == NULL) | |
6059 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6060 | symtab_hdr->sh_info, | |
6061 | 0, NULL, NULL, NULL); | |
6062 | if (locsyms == NULL) | |
6063 | return FALSE; | |
6064 | *locsymsp = locsyms; | |
6065 | } | |
6066 | sym = locsyms + r_symndx; | |
6067 | ||
6068 | if (hp != NULL) | |
6069 | *hp = NULL; | |
6070 | ||
6071 | if (symp != NULL) | |
6072 | *symp = sym; | |
6073 | ||
6074 | if (symsecp != NULL) | |
6075 | { | |
6076 | asection *symsec = NULL; | |
6077 | if ((sym->st_shndx != SHN_UNDEF | |
6078 | && sym->st_shndx < SHN_LORESERVE) | |
6079 | || sym->st_shndx > SHN_HIRESERVE) | |
6080 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
6081 | *symsecp = symsec; | |
6082 | } | |
6083 | ||
e7b938ca | 6084 | if (tls_maskp != NULL) |
411e1bfb AM |
6085 | { |
6086 | struct got_entry **lgot_ents; | |
e7b938ca | 6087 | char *tls_mask; |
411e1bfb | 6088 | |
e7b938ca | 6089 | tls_mask = NULL; |
411e1bfb AM |
6090 | lgot_ents = elf_local_got_ents (ibfd); |
6091 | if (lgot_ents != NULL) | |
6092 | { | |
e7b938ca AM |
6093 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6094 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6095 | } |
e7b938ca | 6096 | *tls_maskp = tls_mask; |
411e1bfb AM |
6097 | } |
6098 | } | |
6099 | return TRUE; | |
6100 | } | |
6101 | ||
e7b938ca | 6102 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6103 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6104 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6105 | |
6106 | static int | |
0d4792f7 AM |
6107 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6108 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6109 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6110 | { |
6111 | unsigned long r_symndx; | |
0d4792f7 | 6112 | int next_r; |
411e1bfb AM |
6113 | struct elf_link_hash_entry *h; |
6114 | Elf_Internal_Sym *sym; | |
6115 | asection *sec; | |
6116 | bfd_vma off; | |
6117 | ||
6118 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6119 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6120 | return 0; |
411e1bfb | 6121 | |
e7b938ca | 6122 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6123 | || sec == NULL |
7c8fe5c4 | 6124 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6125 | return 1; |
411e1bfb AM |
6126 | |
6127 | /* Look inside a TOC section too. */ | |
6128 | if (h != NULL) | |
6129 | { | |
6130 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6131 | off = h->root.u.def.value; | |
6132 | } | |
6133 | else | |
6134 | off = sym->st_value; | |
6135 | off += rel->r_addend; | |
6136 | BFD_ASSERT (off % 8 == 0); | |
7c8fe5c4 AM |
6137 | r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8]; |
6138 | next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1]; | |
e7b938ca | 6139 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6140 | return 0; |
0d4792f7 AM |
6141 | if (toc_symndx != NULL) |
6142 | *toc_symndx = r_symndx; | |
6143 | if ((h == NULL | |
6144 | || ((h->root.type == bfd_link_hash_defined | |
6145 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6146 | && !h->def_dynamic)) |
0d4792f7 AM |
6147 | && (next_r == -1 || next_r == -2)) |
6148 | return 1 - next_r; | |
951fd09b | 6149 | return 1; |
411e1bfb AM |
6150 | } |
6151 | ||
754021d0 | 6152 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6153 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6154 | |
6155 | static bfd_boolean | |
6156 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6157 | { | |
6158 | struct ppc_link_hash_entry *eh; | |
6159 | asection *sym_sec; | |
6160 | long *opd_adjust; | |
6161 | ||
6162 | if (h->root.type == bfd_link_hash_indirect) | |
6163 | return TRUE; | |
6164 | ||
6165 | if (h->root.type == bfd_link_hash_warning) | |
6166 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6167 | ||
6168 | if (h->root.type != bfd_link_hash_defined | |
6169 | && h->root.type != bfd_link_hash_defweak) | |
6170 | return TRUE; | |
6171 | ||
6172 | eh = (struct ppc_link_hash_entry *) h; | |
6173 | if (eh->adjust_done) | |
6174 | return TRUE; | |
6175 | ||
6176 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6177 | opd_adjust = get_opd_info (sym_sec); |
6178 | if (opd_adjust != NULL) | |
754021d0 | 6179 | { |
3f764659 | 6180 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6181 | if (adjust == -1) |
6182 | { | |
6183 | /* This entry has been deleted. */ | |
b3fac117 | 6184 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6185 | if (dsec == NULL) |
6186 | { | |
6187 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6188 | if (elf_discarded_section (dsec)) | |
6189 | { | |
b3fac117 | 6190 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6191 | break; |
6192 | } | |
6193 | } | |
4025353c | 6194 | eh->elf.root.u.def.value = 0; |
81688140 | 6195 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6196 | } |
6197 | else | |
6198 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6199 | eh->adjust_done = 1; |
6200 | } | |
6201 | return TRUE; | |
6202 | } | |
6203 | ||
8c1d1bb8 AM |
6204 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6205 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6206 | have already been determined. */ | |
6207 | ||
6208 | static bfd_boolean | |
6209 | dec_dynrel_count (bfd_vma r_info, | |
6210 | asection *sec, | |
6211 | struct bfd_link_info *info, | |
6212 | Elf_Internal_Sym **local_syms, | |
6213 | struct elf_link_hash_entry *h, | |
6214 | asection *sym_sec) | |
6215 | { | |
6216 | enum elf_ppc64_reloc_type r_type; | |
6217 | struct ppc_dyn_relocs *p; | |
6218 | struct ppc_dyn_relocs **pp; | |
6219 | ||
6220 | /* Can this reloc be dynamic? This switch, and later tests here | |
6221 | should be kept in sync with the code in check_relocs. */ | |
6222 | r_type = ELF64_R_TYPE (r_info); | |
6223 | switch (r_type) | |
6224 | { | |
6225 | default: | |
6226 | return TRUE; | |
6227 | ||
6228 | case R_PPC64_TPREL16: | |
6229 | case R_PPC64_TPREL16_LO: | |
6230 | case R_PPC64_TPREL16_HI: | |
6231 | case R_PPC64_TPREL16_HA: | |
6232 | case R_PPC64_TPREL16_DS: | |
6233 | case R_PPC64_TPREL16_LO_DS: | |
6234 | case R_PPC64_TPREL16_HIGHER: | |
6235 | case R_PPC64_TPREL16_HIGHERA: | |
6236 | case R_PPC64_TPREL16_HIGHEST: | |
6237 | case R_PPC64_TPREL16_HIGHESTA: | |
6238 | if (!info->shared) | |
6239 | return TRUE; | |
6240 | ||
6241 | case R_PPC64_TPREL64: | |
6242 | case R_PPC64_DTPMOD64: | |
6243 | case R_PPC64_DTPREL64: | |
6244 | case R_PPC64_ADDR64: | |
6245 | case R_PPC64_REL30: | |
6246 | case R_PPC64_REL32: | |
6247 | case R_PPC64_REL64: | |
6248 | case R_PPC64_ADDR14: | |
6249 | case R_PPC64_ADDR14_BRNTAKEN: | |
6250 | case R_PPC64_ADDR14_BRTAKEN: | |
6251 | case R_PPC64_ADDR16: | |
6252 | case R_PPC64_ADDR16_DS: | |
6253 | case R_PPC64_ADDR16_HA: | |
6254 | case R_PPC64_ADDR16_HI: | |
6255 | case R_PPC64_ADDR16_HIGHER: | |
6256 | case R_PPC64_ADDR16_HIGHERA: | |
6257 | case R_PPC64_ADDR16_HIGHEST: | |
6258 | case R_PPC64_ADDR16_HIGHESTA: | |
6259 | case R_PPC64_ADDR16_LO: | |
6260 | case R_PPC64_ADDR16_LO_DS: | |
6261 | case R_PPC64_ADDR24: | |
6262 | case R_PPC64_ADDR32: | |
6263 | case R_PPC64_UADDR16: | |
6264 | case R_PPC64_UADDR32: | |
6265 | case R_PPC64_UADDR64: | |
6266 | case R_PPC64_TOC: | |
6267 | break; | |
6268 | } | |
6269 | ||
6270 | if (local_syms != NULL) | |
6271 | { | |
6272 | unsigned long r_symndx; | |
6273 | Elf_Internal_Sym *sym; | |
6274 | bfd *ibfd = sec->owner; | |
6275 | ||
6276 | r_symndx = ELF64_R_SYM (r_info); | |
6277 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6278 | return FALSE; | |
6279 | } | |
6280 | ||
6281 | if ((info->shared | |
6282 | && (MUST_BE_DYN_RELOC (r_type) | |
6283 | || (h != NULL | |
6284 | && (!info->symbolic | |
6285 | || h->root.type == bfd_link_hash_defweak | |
6286 | || !h->def_regular)))) | |
6287 | || (ELIMINATE_COPY_RELOCS | |
6288 | && !info->shared | |
6289 | && h != NULL | |
6290 | && (h->root.type == bfd_link_hash_defweak | |
6291 | || !h->def_regular))) | |
6292 | ; | |
6293 | else | |
6294 | return TRUE; | |
6295 | ||
6296 | if (h != NULL) | |
6297 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6298 | else |
6edfbbad | 6299 | { |
60124e18 AM |
6300 | if (sym_sec != NULL) |
6301 | { | |
6302 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6303 | pp = (struct ppc_dyn_relocs **) vpp; | |
6304 | } | |
6305 | else | |
6306 | { | |
6307 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6308 | pp = (struct ppc_dyn_relocs **) vpp; | |
6309 | } | |
6310 | ||
6311 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6312 | with local syms for a given section. Don't report a dynreloc | |
6313 | miscount. */ | |
6314 | if (*pp == NULL) | |
6315 | return TRUE; | |
6edfbbad | 6316 | } |
8c1d1bb8 AM |
6317 | |
6318 | while ((p = *pp) != NULL) | |
6319 | { | |
6320 | if (p->sec == sec) | |
6321 | { | |
6322 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6323 | p->pc_count -= 1; | |
6324 | p->count -= 1; | |
6325 | if (p->count == 0) | |
6326 | *pp = p->next; | |
6327 | return TRUE; | |
6328 | } | |
6329 | pp = &p->next; | |
6330 | } | |
6331 | ||
6332 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6333 | sec->owner, sec); | |
6334 | bfd_set_error (bfd_error_bad_value); | |
6335 | return FALSE; | |
6336 | } | |
6337 | ||
754021d0 AM |
6338 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6339 | only remove those associated with functions in discarded link-once | |
6340 | sections, or weakly defined functions that have been overridden. It | |
6341 | would be possible to remove many more entries for statically linked | |
6342 | applications. */ | |
6343 | ||
b34976b6 | 6344 | bfd_boolean |
3f764659 | 6345 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
b4f4e59f | 6346 | bfd_boolean no_opd_opt, |
3f764659 | 6347 | bfd_boolean non_overlapping) |
1e2f5b6e AM |
6348 | { |
6349 | bfd *ibfd; | |
754021d0 | 6350 | bfd_boolean some_edited = FALSE; |
3f764659 | 6351 | asection *need_pad = NULL; |
1e2f5b6e | 6352 | |
411e1bfb | 6353 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6354 | { |
6355 | asection *sec; | |
6356 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6357 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6358 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6359 | struct elf_link_hash_entry **sym_hashes; |
6360 | bfd_vma offset; | |
d6fe2dc1 | 6361 | bfd_size_type amt; |
4025353c | 6362 | long *opd_adjust; |
3f764659 JJ |
6363 | bfd_boolean need_edit, add_aux_fields; |
6364 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6365 | |
6366 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6367 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6368 | continue; |
6369 | ||
3f764659 | 6370 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6371 | opd_adjust = get_opd_info (sec); |
6372 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6373 | { |
4b85d634 AM |
6374 | /* check_relocs hasn't been called. Must be a ld -r link |
6375 | or --just-symbols object. */ | |
b4f4e59f | 6376 | opd_adjust = bfd_alloc (obfd, amt); |
46de2a7c AM |
6377 | if (opd_adjust == NULL) |
6378 | return FALSE; | |
7c8fe5c4 AM |
6379 | ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust; |
6380 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
6381 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
d6fe2dc1 | 6382 | } |
4025353c | 6383 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6384 | |
b4f4e59f AM |
6385 | if (no_opd_opt) |
6386 | continue; | |
6387 | ||
4b85d634 AM |
6388 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6389 | continue; | |
6390 | ||
1e2f5b6e AM |
6391 | if (sec->output_section == bfd_abs_section_ptr) |
6392 | continue; | |
6393 | ||
6394 | /* Look through the section relocs. */ | |
6395 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6396 | continue; | |
6397 | ||
6cdc0ccc | 6398 | local_syms = NULL; |
1e2f5b6e AM |
6399 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6400 | sym_hashes = elf_sym_hashes (ibfd); | |
6401 | ||
6402 | /* Read the relocations. */ | |
4ce794b7 | 6403 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6404 | info->keep_memory); |
1e2f5b6e | 6405 | if (relstart == NULL) |
b34976b6 | 6406 | return FALSE; |
1e2f5b6e AM |
6407 | |
6408 | /* First run through the relocs to check they are sane, and to | |
6409 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6410 | need_edit = FALSE; |
3f764659 | 6411 | need_pad = sec; |
1e2f5b6e AM |
6412 | offset = 0; |
6413 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6414 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6415 | { |
04c9666a | 6416 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6417 | unsigned long r_symndx; |
6418 | asection *sym_sec; | |
6419 | struct elf_link_hash_entry *h; | |
6420 | Elf_Internal_Sym *sym; | |
6421 | ||
3f764659 | 6422 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6423 | only interested in the reloc pointing to a function entry |
6424 | point. */ | |
50bc7936 AM |
6425 | if (rel->r_offset != offset |
6426 | || rel + 1 >= relend | |
6427 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6428 | { |
6429 | /* If someone messes with .opd alignment then after a | |
6430 | "ld -r" we might have padding in the middle of .opd. | |
6431 | Also, there's nothing to prevent someone putting | |
6432 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6433 | optimization for them! */ |
3f764659 | 6434 | broken_opd: |
1e2f5b6e | 6435 | (*_bfd_error_handler) |
d003868e | 6436 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6437 | need_edit = FALSE; |
1e2f5b6e AM |
6438 | break; |
6439 | } | |
6440 | ||
50bc7936 AM |
6441 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6442 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6443 | { | |
6444 | (*_bfd_error_handler) | |
d003868e AM |
6445 | (_("%B: unexpected reloc type %u in .opd section"), |
6446 | ibfd, r_type); | |
50bc7936 AM |
6447 | need_edit = FALSE; |
6448 | break; | |
6449 | } | |
6450 | ||
1e2f5b6e | 6451 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6452 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6453 | r_symndx, ibfd)) | |
50bc7936 | 6454 | goto error_ret; |
1e2f5b6e AM |
6455 | |
6456 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6457 | { | |
411e1bfb AM |
6458 | const char *sym_name; |
6459 | if (h != NULL) | |
6460 | sym_name = h->root.root.string; | |
6461 | else | |
26c61ae5 L |
6462 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6463 | sym_sec); | |
411e1bfb | 6464 | |
1e2f5b6e | 6465 | (*_bfd_error_handler) |
d003868e AM |
6466 | (_("%B: undefined sym `%s' in .opd section"), |
6467 | ibfd, sym_name); | |
b34976b6 | 6468 | need_edit = FALSE; |
1e2f5b6e AM |
6469 | break; |
6470 | } | |
6471 | ||
51020317 AM |
6472 | /* opd entries are always for functions defined in the |
6473 | current input bfd. If the symbol isn't defined in the | |
6474 | input bfd, then we won't be using the function in this | |
6475 | bfd; It must be defined in a linkonce section in another | |
6476 | bfd, or is weak. It's also possible that we are | |
6477 | discarding the function due to a linker script /DISCARD/, | |
6478 | which we test for via the output_section. */ | |
6479 | if (sym_sec->owner != ibfd | |
6480 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6481 | need_edit = TRUE; |
1e2f5b6e | 6482 | |
50bc7936 | 6483 | rel += 2; |
3f764659 JJ |
6484 | if (rel == relend |
6485 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6486 | { | |
6487 | if (sec->size == offset + 24) | |
6488 | { | |
6489 | need_pad = NULL; | |
6490 | break; | |
6491 | } | |
6492 | if (rel == relend && sec->size == offset + 16) | |
6493 | { | |
6494 | cnt_16b++; | |
6495 | break; | |
6496 | } | |
6497 | goto broken_opd; | |
6498 | } | |
6499 | ||
6500 | if (rel->r_offset == offset + 24) | |
6501 | offset += 24; | |
6502 | else if (rel->r_offset != offset + 16) | |
6503 | goto broken_opd; | |
6504 | else if (rel + 1 < relend | |
6505 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6506 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6507 | { | |
6508 | offset += 16; | |
6509 | cnt_16b++; | |
6510 | } | |
6511 | else if (rel + 2 < relend | |
6512 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6513 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6514 | { | |
6515 | offset += 24; | |
6516 | rel += 1; | |
6517 | } | |
6518 | else | |
6519 | goto broken_opd; | |
1e2f5b6e AM |
6520 | } |
6521 | ||
3f764659 JJ |
6522 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6523 | ||
6524 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6525 | { |
6526 | Elf_Internal_Rela *write_rel; | |
6527 | bfd_byte *rptr, *wptr; | |
3f764659 | 6528 | bfd_byte *new_contents = NULL; |
b34976b6 | 6529 | bfd_boolean skip; |
3f764659 | 6530 | long opd_ent_size; |
1e2f5b6e AM |
6531 | |
6532 | /* This seems a waste of time as input .opd sections are all | |
6533 | zeros as generated by gcc, but I suppose there's no reason | |
6534 | this will always be so. We might start putting something in | |
6535 | the third word of .opd entries. */ | |
6536 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6537 | { | |
eea6121a AM |
6538 | bfd_byte *loc; |
6539 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6540 | { |
eea6121a AM |
6541 | if (loc != NULL) |
6542 | free (loc); | |
50bc7936 | 6543 | error_ret: |
6cdc0ccc AM |
6544 | if (local_syms != NULL |
6545 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6546 | free (local_syms); | |
6cdc0ccc AM |
6547 | if (elf_section_data (sec)->relocs != relstart) |
6548 | free (relstart); | |
b34976b6 | 6549 | return FALSE; |
6cdc0ccc | 6550 | } |
1e2f5b6e AM |
6551 | sec->contents = loc; |
6552 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6553 | } | |
6554 | ||
6555 | elf_section_data (sec)->relocs = relstart; | |
6556 | ||
3f764659 | 6557 | new_contents = sec->contents; |
3f764659 JJ |
6558 | if (add_aux_fields) |
6559 | { | |
6560 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6561 | if (new_contents == NULL) | |
6562 | return FALSE; | |
6563 | need_pad = FALSE; | |
3f764659 | 6564 | } |
b4f4e59f AM |
6565 | wptr = new_contents; |
6566 | rptr = sec->contents; | |
3f764659 | 6567 | |
1e2f5b6e | 6568 | write_rel = relstart; |
b34976b6 | 6569 | skip = FALSE; |
1e2f5b6e | 6570 | offset = 0; |
3f764659 | 6571 | opd_ent_size = 0; |
1e2f5b6e AM |
6572 | for (rel = relstart; rel < relend; rel++) |
6573 | { | |
50bc7936 AM |
6574 | unsigned long r_symndx; |
6575 | asection *sym_sec; | |
6576 | struct elf_link_hash_entry *h; | |
6577 | Elf_Internal_Sym *sym; | |
6578 | ||
6579 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6580 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6581 | r_symndx, ibfd)) |
50bc7936 AM |
6582 | goto error_ret; |
6583 | ||
1e2f5b6e AM |
6584 | if (rel->r_offset == offset) |
6585 | { | |
50bc7936 | 6586 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6587 | |
6588 | /* See if the .opd entry is full 24 byte or | |
6589 | 16 byte (with fd_aux entry overlapped with next | |
6590 | fd_func). */ | |
6591 | opd_ent_size = 24; | |
6592 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6593 | || (rel + 3 < relend | |
6594 | && rel[2].r_offset == offset + 16 | |
6595 | && rel[3].r_offset == offset + 24 | |
6596 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6597 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6598 | opd_ent_size = 16; | |
6599 | ||
4025353c AM |
6600 | if (h != NULL |
6601 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6602 | { |
6603 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6604 | ppc_hash_table (info)); | |
6605 | if (fdh != NULL | |
6606 | && fdh->elf.root.type != bfd_link_hash_defined | |
6607 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6608 | fdh = NULL; | |
6609 | } | |
1e2f5b6e | 6610 | |
51020317 AM |
6611 | skip = (sym_sec->owner != ibfd |
6612 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6613 | if (skip) |
6614 | { | |
4025353c | 6615 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6616 | { |
6617 | /* Arrange for the function descriptor sym | |
6618 | to be dropped. */ | |
d6fe2dc1 AM |
6619 | fdh->elf.root.u.def.value = 0; |
6620 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6621 | } |
3f764659 | 6622 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6623 | } |
6624 | else | |
1e2f5b6e AM |
6625 | { |
6626 | /* We'll be keeping this opd entry. */ | |
6627 | ||
4025353c | 6628 | if (fdh != NULL) |
1e2f5b6e | 6629 | { |
754021d0 AM |
6630 | /* Redefine the function descriptor symbol to |
6631 | this location in the opd section. It is | |
6632 | necessary to update the value here rather | |
6633 | than using an array of adjustments as we do | |
6634 | for local symbols, because various places | |
6635 | in the generic ELF code use the value | |
6636 | stored in u.def.value. */ | |
3f764659 | 6637 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6638 | fdh->adjust_done = 1; |
1e2f5b6e | 6639 | } |
754021d0 AM |
6640 | |
6641 | /* Local syms are a bit tricky. We could | |
6642 | tweak them as they can be cached, but | |
6643 | we'd need to look through the local syms | |
6644 | for the function descriptor sym which we | |
6645 | don't have at the moment. So keep an | |
6646 | array of adjustments. */ | |
3f764659 JJ |
6647 | opd_adjust[rel->r_offset / 8] |
6648 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6649 | |
6650 | if (wptr != rptr) | |
3f764659 JJ |
6651 | memcpy (wptr, rptr, opd_ent_size); |
6652 | wptr += opd_ent_size; | |
6653 | if (add_aux_fields && opd_ent_size == 16) | |
6654 | { | |
6655 | memset (wptr, '\0', 8); | |
6656 | wptr += 8; | |
6657 | } | |
1e2f5b6e | 6658 | } |
3f764659 JJ |
6659 | rptr += opd_ent_size; |
6660 | offset += opd_ent_size; | |
1e2f5b6e AM |
6661 | } |
6662 | ||
50bc7936 AM |
6663 | if (skip) |
6664 | { | |
60124e18 AM |
6665 | if (!NO_OPD_RELOCS |
6666 | && !info->relocatable | |
18d944df AM |
6667 | && !dec_dynrel_count (rel->r_info, sec, info, |
6668 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6669 | goto error_ret; |
50bc7936 AM |
6670 | } |
6671 | else | |
1e2f5b6e | 6672 | { |
50bc7936 AM |
6673 | /* We need to adjust any reloc offsets to point to the |
6674 | new opd entries. While we're at it, we may as well | |
6675 | remove redundant relocs. */ | |
3f764659 | 6676 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6677 | if (write_rel != rel) |
6678 | memcpy (write_rel, rel, sizeof (*rel)); | |
6679 | ++write_rel; | |
6680 | } | |
6681 | } | |
6682 | ||
3f764659 | 6683 | sec->size = wptr - new_contents; |
1e2f5b6e | 6684 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6685 | if (add_aux_fields) |
6686 | { | |
6687 | free (sec->contents); | |
6688 | sec->contents = new_contents; | |
6689 | } | |
6690 | ||
05bf9422 | 6691 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6692 | elf_bfd_final_link if we are emitting relocs. */ |
6693 | elf_section_data (sec)->rel_hdr.sh_size | |
6694 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6695 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6696 | some_edited = TRUE; |
1e2f5b6e | 6697 | } |
6cdc0ccc | 6698 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6699 | free (relstart); |
6cdc0ccc | 6700 | |
411e1bfb AM |
6701 | if (local_syms != NULL |
6702 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6703 | { | |
6704 | if (!info->keep_memory) | |
6705 | free (local_syms); | |
6706 | else | |
6707 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6708 | } | |
6709 | } | |
6710 | ||
754021d0 AM |
6711 | if (some_edited) |
6712 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6713 | ||
3f764659 JJ |
6714 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6715 | long, add a 8 byte padding after it. */ | |
6716 | if (need_pad != NULL && !info->relocatable) | |
6717 | { | |
6718 | bfd_byte *p; | |
6719 | ||
6720 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6721 | { | |
6722 | BFD_ASSERT (need_pad->size > 0); | |
6723 | ||
6724 | p = bfd_malloc (need_pad->size + 8); | |
6725 | if (p == NULL) | |
6726 | return FALSE; | |
699733f6 | 6727 | |
3f764659 JJ |
6728 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6729 | p, 0, need_pad->size)) | |
6730 | return FALSE; | |
6731 | ||
6732 | need_pad->contents = p; | |
6733 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6734 | } | |
6735 | else | |
6736 | { | |
6737 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6738 | if (p == NULL) | |
6739 | return FALSE; | |
6740 | ||
6741 | need_pad->contents = p; | |
6742 | } | |
6743 | ||
6744 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6745 | need_pad->size += 8; | |
6746 | } | |
6747 | ||
411e1bfb AM |
6748 | return TRUE; |
6749 | } | |
6750 | ||
e1918d23 | 6751 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6752 | |
e1918d23 | 6753 | asection * |
4ce794b7 | 6754 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6755 | { |
411e1bfb AM |
6756 | struct ppc_link_hash_table *htab; |
6757 | ||
411e1bfb | 6758 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6759 | if (htab->tls_get_addr != NULL) |
6760 | { | |
8387904d | 6761 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6762 | |
8387904d AM |
6763 | while (h->elf.root.type == bfd_link_hash_indirect |
6764 | || h->elf.root.type == bfd_link_hash_warning) | |
6765 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6766 | |
6767 | htab->tls_get_addr = h; | |
8387904d AM |
6768 | |
6769 | if (htab->tls_get_addr_fd == NULL | |
6770 | && h->oh != NULL | |
c4f68ce3 AM |
6771 | && h->oh->is_func_descriptor |
6772 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6773 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6774 | htab->tls_get_addr_fd = h->oh; |
6775 | } | |
6776 | ||
6777 | if (htab->tls_get_addr_fd != NULL) | |
6778 | { | |
6779 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6780 | ||
6781 | while (h->elf.root.type == bfd_link_hash_indirect | |
6782 | || h->elf.root.type == bfd_link_hash_warning) | |
6783 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6784 | ||
6785 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6786 | } |
6787 | ||
e1918d23 | 6788 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6789 | } |
411e1bfb | 6790 | |
951fd09b AM |
6791 | /* Run through all the TLS relocs looking for optimization |
6792 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6793 | a preliminary section layout so that we know the TLS segment | |
6794 | offsets. We can't optimize earlier because some optimizations need | |
6795 | to know the tp offset, and we need to optimize before allocating | |
6796 | dynamic relocations. */ | |
6797 | ||
6798 | bfd_boolean | |
4ce794b7 | 6799 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6800 | { |
6801 | bfd *ibfd; | |
6802 | asection *sec; | |
6803 | struct ppc_link_hash_table *htab; | |
6804 | ||
1049f94e | 6805 | if (info->relocatable || info->shared) |
411e1bfb AM |
6806 | return TRUE; |
6807 | ||
951fd09b | 6808 | htab = ppc_hash_table (info); |
411e1bfb AM |
6809 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6810 | { | |
6811 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6812 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6813 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6814 | |
30038c59 AM |
6815 | /* Look at all the sections for this file, with TOC last. */ |
6816 | for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next | |
6817 | : ibfd->sections); | |
6818 | sec != NULL; | |
6819 | sec = (sec == toc ? NULL | |
6820 | : sec->next == NULL ? toc | |
6821 | : sec->next == toc && toc->next ? toc->next | |
6822 | : sec->next)) | |
411e1bfb AM |
6823 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) |
6824 | { | |
6825 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6826 | int expecting_tls_get_addr; | |
30038c59 | 6827 | long toc_ref_index = 0; |
411e1bfb AM |
6828 | |
6829 | /* Read the relocations. */ | |
4ce794b7 | 6830 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6831 | info->keep_memory); |
411e1bfb AM |
6832 | if (relstart == NULL) |
6833 | return FALSE; | |
6834 | ||
6835 | expecting_tls_get_addr = 0; | |
6836 | relend = relstart + sec->reloc_count; | |
6837 | for (rel = relstart; rel < relend; rel++) | |
6838 | { | |
6839 | enum elf_ppc64_reloc_type r_type; | |
6840 | unsigned long r_symndx; | |
6841 | struct elf_link_hash_entry *h; | |
6842 | Elf_Internal_Sym *sym; | |
6843 | asection *sym_sec; | |
e7b938ca AM |
6844 | char *tls_mask; |
6845 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6846 | bfd_vma value; |
951fd09b | 6847 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6848 | |
6849 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6850 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6851 | r_symndx, ibfd)) |
6852 | { | |
6853 | err_free_rel: | |
6854 | if (elf_section_data (sec)->relocs != relstart) | |
6855 | free (relstart); | |
30038c59 AM |
6856 | if (toc_ref != NULL) |
6857 | free (toc_ref); | |
411e1bfb AM |
6858 | if (locsyms != NULL |
6859 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6860 | != (unsigned char *) locsyms)) | |
6861 | free (locsyms); | |
6862 | return FALSE; | |
6863 | } | |
6864 | ||
6865 | if (h != NULL) | |
6866 | { | |
6867 | if (h->root.type != bfd_link_hash_defined | |
6868 | && h->root.type != bfd_link_hash_defweak) | |
6869 | continue; | |
6870 | value = h->root.u.def.value; | |
6871 | } | |
6872 | else | |
4025353c AM |
6873 | /* Symbols referenced by TLS relocs must be of type |
6874 | STT_TLS. So no need for .opd local sym adjust. */ | |
6875 | value = sym->st_value; | |
951fd09b | 6876 | |
411e1bfb | 6877 | ok_tprel = FALSE; |
951fd09b AM |
6878 | is_local = FALSE; |
6879 | if (h == NULL | |
f5385ebf | 6880 | || !h->def_dynamic) |
411e1bfb | 6881 | { |
951fd09b | 6882 | is_local = TRUE; |
411e1bfb AM |
6883 | value += sym_sec->output_offset; |
6884 | value += sym_sec->output_section->vma; | |
e1918d23 | 6885 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6886 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6887 | < (bfd_vma) 1 << 32); | |
6888 | } | |
6889 | ||
4ce794b7 | 6890 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6891 | switch (r_type) |
6892 | { | |
6893 | case R_PPC64_GOT_TLSLD16: | |
6894 | case R_PPC64_GOT_TLSLD16_LO: | |
6895 | case R_PPC64_GOT_TLSLD16_HI: | |
6896 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6897 | /* These relocs should never be against a symbol |
6898 | defined in a shared lib. Leave them alone if | |
6899 | that turns out to be the case. */ | |
e717da7e | 6900 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6901 | if (!is_local) |
6902 | continue; | |
6903 | ||
951fd09b AM |
6904 | /* LD -> LE */ |
6905 | tls_set = 0; | |
6906 | tls_clear = TLS_LD; | |
e7b938ca | 6907 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6908 | expecting_tls_get_addr = 1; |
6909 | break; | |
6910 | ||
6911 | case R_PPC64_GOT_TLSGD16: | |
6912 | case R_PPC64_GOT_TLSGD16_LO: | |
6913 | case R_PPC64_GOT_TLSGD16_HI: | |
6914 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6915 | if (ok_tprel) |
411e1bfb AM |
6916 | /* GD -> LE */ |
6917 | tls_set = 0; | |
6918 | else | |
6919 | /* GD -> IE */ | |
951fd09b AM |
6920 | tls_set = TLS_TLS | TLS_TPRELGD; |
6921 | tls_clear = TLS_GD; | |
e7b938ca | 6922 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6923 | expecting_tls_get_addr = 1; |
6924 | break; | |
6925 | ||
6926 | case R_PPC64_GOT_TPREL16_DS: | |
6927 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6928 | case R_PPC64_GOT_TPREL16_HI: | |
6929 | case R_PPC64_GOT_TPREL16_HA: | |
6930 | expecting_tls_get_addr = 0; | |
6931 | if (ok_tprel) | |
6932 | { | |
6933 | /* IE -> LE */ | |
6934 | tls_set = 0; | |
6935 | tls_clear = TLS_TPREL; | |
e7b938ca | 6936 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6937 | break; |
6938 | } | |
6939 | else | |
6940 | continue; | |
6941 | ||
6942 | case R_PPC64_REL14: | |
6943 | case R_PPC64_REL14_BRTAKEN: | |
6944 | case R_PPC64_REL14_BRNTAKEN: | |
6945 | case R_PPC64_REL24: | |
6946 | if (h != NULL | |
8387904d AM |
6947 | && (h == &htab->tls_get_addr->elf |
6948 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6949 | { |
6950 | if (!expecting_tls_get_addr | |
6951 | && rel != relstart | |
6952 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6953 | == R_PPC64_TOC16) | |
6954 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6955 | == R_PPC64_TOC16_LO))) | |
6956 | { | |
6957 | /* Check for toc tls entries. */ | |
6958 | char *toc_tls; | |
951fd09b | 6959 | int retval; |
411e1bfb | 6960 | |
0d4792f7 | 6961 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6962 | rel - 1, ibfd); |
6963 | if (retval == 0) | |
411e1bfb | 6964 | goto err_free_rel; |
30038c59 AM |
6965 | if (retval > 1 && toc_tls != NULL) |
6966 | { | |
6967 | expecting_tls_get_addr = 1; | |
6968 | if (toc_ref != NULL) | |
6969 | toc_ref[toc_ref_index] = 1; | |
6970 | } | |
411e1bfb AM |
6971 | } |
6972 | ||
6973 | if (expecting_tls_get_addr) | |
6974 | { | |
6975 | struct plt_entry *ent; | |
6976 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6977 | if (ent->addend == 0) | |
6978 | { | |
6979 | if (ent->plt.refcount > 0) | |
6980 | ent->plt.refcount -= 1; | |
6981 | break; | |
6982 | } | |
6983 | } | |
6984 | } | |
6985 | expecting_tls_get_addr = 0; | |
6986 | continue; | |
6987 | ||
30038c59 AM |
6988 | case R_PPC64_TOC16: |
6989 | case R_PPC64_TOC16_LO: | |
6990 | case R_PPC64_TLS: | |
6991 | expecting_tls_get_addr = 0; | |
6992 | if (sym_sec == toc && toc != NULL) | |
6993 | { | |
6994 | /* Mark this toc entry as referenced by a TLS | |
6995 | code sequence. We can do that now in the | |
6996 | case of R_PPC64_TLS, and after checking for | |
6997 | tls_get_addr for the TOC16 relocs. */ | |
6998 | if (toc_ref == NULL) | |
6999 | { | |
7000 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7001 | if (toc_ref == NULL) | |
7002 | goto err_free_rel; | |
7003 | } | |
7004 | if (h != NULL) | |
7005 | value = h->root.u.def.value; | |
7006 | else | |
7007 | value = sym->st_value; | |
7008 | value += rel->r_addend; | |
7009 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7010 | toc_ref_index = value / 8; | |
7011 | if (r_type == R_PPC64_TLS) | |
7012 | toc_ref[toc_ref_index] = 1; | |
7013 | } | |
7014 | continue; | |
7015 | ||
411e1bfb AM |
7016 | case R_PPC64_TPREL64: |
7017 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7018 | if (sec != toc |
7019 | || toc_ref == NULL | |
7020 | || !toc_ref[rel->r_offset / 8]) | |
7021 | continue; | |
411e1bfb AM |
7022 | if (ok_tprel) |
7023 | { | |
7024 | /* IE -> LE */ | |
7025 | tls_set = TLS_EXPLICIT; | |
7026 | tls_clear = TLS_TPREL; | |
7027 | break; | |
7028 | } | |
7029 | else | |
7030 | continue; | |
7031 | ||
7032 | case R_PPC64_DTPMOD64: | |
7033 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7034 | if (sec != toc |
7035 | || toc_ref == NULL | |
7036 | || !toc_ref[rel->r_offset / 8]) | |
7037 | continue; | |
951fd09b AM |
7038 | if (rel + 1 < relend |
7039 | && (rel[1].r_info | |
7040 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7041 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 7042 | { |
951fd09b | 7043 | if (ok_tprel) |
411e1bfb | 7044 | /* GD -> LE */ |
951fd09b | 7045 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
7046 | else |
7047 | /* GD -> IE */ | |
951fd09b AM |
7048 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
7049 | tls_clear = TLS_GD; | |
411e1bfb AM |
7050 | } |
7051 | else | |
7052 | { | |
951fd09b AM |
7053 | if (!is_local) |
7054 | continue; | |
7055 | ||
7056 | /* LD -> LE */ | |
7057 | tls_set = TLS_EXPLICIT; | |
7058 | tls_clear = TLS_LD; | |
411e1bfb AM |
7059 | } |
7060 | break; | |
7061 | ||
7062 | default: | |
7063 | expecting_tls_get_addr = 0; | |
7064 | continue; | |
7065 | } | |
7066 | ||
7067 | if ((tls_set & TLS_EXPLICIT) == 0) | |
7068 | { | |
7069 | struct got_entry *ent; | |
7070 | ||
7071 | /* Adjust got entry for this reloc. */ | |
7072 | if (h != NULL) | |
7073 | ent = h->got.glist; | |
7074 | else | |
7075 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
7076 | ||
7077 | for (; ent != NULL; ent = ent->next) | |
7078 | if (ent->addend == rel->r_addend | |
e717da7e | 7079 | && ent->owner == ibfd |
e7b938ca | 7080 | && ent->tls_type == tls_type) |
411e1bfb AM |
7081 | break; |
7082 | if (ent == NULL) | |
7083 | abort (); | |
7084 | ||
7085 | if (tls_set == 0) | |
7086 | { | |
7087 | /* We managed to get rid of a got entry. */ | |
7088 | if (ent->got.refcount > 0) | |
7089 | ent->got.refcount -= 1; | |
7090 | } | |
411e1bfb | 7091 | } |
8c1d1bb8 | 7092 | else |
411e1bfb | 7093 | { |
8c1d1bb8 AM |
7094 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
7095 | we'll lose one or two dyn relocs. */ | |
7096 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7097 | NULL, h, sym_sec)) | |
7098 | return FALSE; | |
7099 | ||
7100 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
7101 | { | |
7102 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7103 | NULL, h, sym_sec)) | |
7104 | return FALSE; | |
7105 | } | |
411e1bfb AM |
7106 | } |
7107 | ||
e7b938ca AM |
7108 | *tls_mask |= tls_set; |
7109 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
7110 | } |
7111 | ||
7112 | if (elf_section_data (sec)->relocs != relstart) | |
7113 | free (relstart); | |
7114 | } | |
7115 | ||
30038c59 AM |
7116 | if (toc_ref != NULL) |
7117 | free (toc_ref); | |
7118 | ||
411e1bfb AM |
7119 | if (locsyms != NULL |
7120 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
7121 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
7122 | { |
7123 | if (!info->keep_memory) | |
411e1bfb | 7124 | free (locsyms); |
6cdc0ccc | 7125 | else |
411e1bfb | 7126 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 7127 | } |
1e2f5b6e | 7128 | } |
b34976b6 | 7129 | return TRUE; |
1e2f5b6e | 7130 | } |
b34976b6 | 7131 | |
c5614fa4 AM |
7132 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7133 | the values of any global symbols in a toc section that has been | |
7134 | edited. Globals in toc sections should be a rarity, so this function | |
7135 | sets a flag if any are found in toc sections other than the one just | |
7136 | edited, so that futher hash table traversals can be avoided. */ | |
7137 | ||
7138 | struct adjust_toc_info | |
7139 | { | |
7140 | asection *toc; | |
7141 | unsigned long *skip; | |
7142 | bfd_boolean global_toc_syms; | |
7143 | }; | |
7144 | ||
7145 | static bfd_boolean | |
7146 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7147 | { | |
7148 | struct ppc_link_hash_entry *eh; | |
7149 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7150 | ||
7151 | if (h->root.type == bfd_link_hash_indirect) | |
7152 | return TRUE; | |
7153 | ||
7154 | if (h->root.type == bfd_link_hash_warning) | |
7155 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7156 | ||
7157 | if (h->root.type != bfd_link_hash_defined | |
7158 | && h->root.type != bfd_link_hash_defweak) | |
7159 | return TRUE; | |
7160 | ||
7161 | eh = (struct ppc_link_hash_entry *) h; | |
7162 | if (eh->adjust_done) | |
7163 | return TRUE; | |
7164 | ||
7165 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7166 | { | |
7167 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7168 | if (skip != (unsigned long) -1) | |
7169 | eh->elf.root.u.def.value -= skip; | |
7170 | else | |
7171 | { | |
7172 | (*_bfd_error_handler) | |
7173 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7174 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7175 | eh->elf.root.u.def.value = 0; | |
7176 | } | |
7177 | eh->adjust_done = 1; | |
7178 | } | |
7179 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7180 | toc_inf->global_toc_syms = TRUE; | |
7181 | ||
7182 | return TRUE; | |
7183 | } | |
7184 | ||
7185 | /* Examine all relocs referencing .toc sections in order to remove | |
7186 | unused .toc entries. */ | |
7187 | ||
7188 | bfd_boolean | |
7189 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7190 | { | |
7191 | bfd *ibfd; | |
7192 | struct adjust_toc_info toc_inf; | |
7193 | ||
7194 | toc_inf.global_toc_syms = TRUE; | |
7195 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7196 | { | |
7197 | asection *toc, *sec; | |
7198 | Elf_Internal_Shdr *symtab_hdr; | |
7199 | Elf_Internal_Sym *local_syms; | |
7200 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7201 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7202 | unsigned long *skip, *drop; |
7203 | unsigned char *used; | |
7204 | unsigned char *keep, last, some_unused; | |
7205 | ||
7206 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7207 | if (toc == NULL | |
92b7a70f | 7208 | || toc->size == 0 |
c5614fa4 AM |
7209 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7210 | || elf_discarded_section (toc)) | |
7211 | continue; | |
7212 | ||
7213 | local_syms = NULL; | |
7214 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7215 | sym_hashes = elf_sym_hashes (ibfd); | |
7216 | ||
7217 | /* Look at sections dropped from the final link. */ | |
7218 | skip = NULL; | |
7219 | relstart = NULL; | |
7220 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7221 | { | |
7222 | if (sec->reloc_count == 0 | |
7223 | || !elf_discarded_section (sec) | |
7224 | || get_opd_info (sec) | |
7225 | || (sec->flags & SEC_ALLOC) == 0 | |
7226 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7227 | continue; | |
7228 | ||
7229 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7230 | if (relstart == NULL) | |
7231 | goto error_ret; | |
7232 | ||
7233 | /* Run through the relocs to see which toc entries might be | |
7234 | unused. */ | |
7235 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7236 | { | |
7237 | enum elf_ppc64_reloc_type r_type; | |
7238 | unsigned long r_symndx; | |
7239 | asection *sym_sec; | |
7240 | struct elf_link_hash_entry *h; | |
7241 | Elf_Internal_Sym *sym; | |
7242 | bfd_vma val; | |
7243 | ||
7244 | r_type = ELF64_R_TYPE (rel->r_info); | |
7245 | switch (r_type) | |
7246 | { | |
7247 | default: | |
7248 | continue; | |
7249 | ||
7250 | case R_PPC64_TOC16: | |
7251 | case R_PPC64_TOC16_LO: | |
7252 | case R_PPC64_TOC16_HI: | |
7253 | case R_PPC64_TOC16_HA: | |
7254 | case R_PPC64_TOC16_DS: | |
7255 | case R_PPC64_TOC16_LO_DS: | |
7256 | break; | |
7257 | } | |
7258 | ||
7259 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7260 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7261 | r_symndx, ibfd)) | |
7262 | goto error_ret; | |
7263 | ||
7264 | if (sym_sec != toc) | |
7265 | continue; | |
7266 | ||
7267 | if (h != NULL) | |
7268 | val = h->root.u.def.value; | |
7269 | else | |
7270 | val = sym->st_value; | |
7271 | val += rel->r_addend; | |
7272 | ||
7273 | if (val >= toc->size) | |
7274 | continue; | |
7275 | ||
7276 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7277 | If not, don't mark as unused. */ | |
7278 | if (val & 7) | |
7279 | continue; | |
7280 | ||
7281 | if (skip == NULL) | |
7282 | { | |
7283 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7284 | if (skip == NULL) | |
7285 | goto error_ret; | |
7286 | } | |
7287 | ||
7288 | skip[val >> 3] = 1; | |
7289 | } | |
7290 | ||
7291 | if (elf_section_data (sec)->relocs != relstart) | |
7292 | free (relstart); | |
7293 | } | |
7294 | ||
7295 | if (skip == NULL) | |
7296 | continue; | |
7297 | ||
7298 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7299 | if (used == NULL) | |
7300 | { | |
7301 | error_ret: | |
7302 | if (local_syms != NULL | |
7303 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7304 | free (local_syms); | |
7305 | if (sec != NULL | |
7306 | && relstart != NULL | |
7307 | && elf_section_data (sec)->relocs != relstart) | |
7308 | free (relstart); | |
7309 | if (skip != NULL) | |
7310 | free (skip); | |
7311 | return FALSE; | |
7312 | } | |
7313 | ||
30038c59 AM |
7314 | /* Now check all kept sections that might reference the toc. |
7315 | Check the toc itself last. */ | |
7316 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7317 | : ibfd->sections); | |
c5614fa4 | 7318 | sec != NULL; |
c5614fa4 | 7319 | sec = (sec == toc ? NULL |
c5614fa4 | 7320 | : sec->next == NULL ? toc |
30038c59 | 7321 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7322 | : sec->next)) |
7323 | { | |
7324 | int repeat; | |
7325 | ||
7326 | if (sec->reloc_count == 0 | |
7327 | || elf_discarded_section (sec) | |
7328 | || get_opd_info (sec) | |
7329 | || (sec->flags & SEC_ALLOC) == 0 | |
7330 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7331 | continue; | |
7332 | ||
7333 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7334 | if (relstart == NULL) | |
7335 | goto error_ret; | |
7336 | ||
7337 | /* Mark toc entries referenced as used. */ | |
7338 | repeat = 0; | |
7339 | do | |
7340 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7341 | { | |
7342 | enum elf_ppc64_reloc_type r_type; | |
7343 | unsigned long r_symndx; | |
7344 | asection *sym_sec; | |
7345 | struct elf_link_hash_entry *h; | |
7346 | Elf_Internal_Sym *sym; | |
7347 | bfd_vma val; | |
7348 | ||
7349 | r_type = ELF64_R_TYPE (rel->r_info); | |
7350 | switch (r_type) | |
7351 | { | |
7352 | case R_PPC64_TOC16: | |
7353 | case R_PPC64_TOC16_LO: | |
7354 | case R_PPC64_TOC16_HI: | |
7355 | case R_PPC64_TOC16_HA: | |
7356 | case R_PPC64_TOC16_DS: | |
7357 | case R_PPC64_TOC16_LO_DS: | |
7358 | /* In case we're taking addresses of toc entries. */ | |
7359 | case R_PPC64_ADDR64: | |
7360 | break; | |
7361 | ||
7362 | default: | |
7363 | continue; | |
7364 | } | |
7365 | ||
7366 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7367 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7368 | r_symndx, ibfd)) | |
7369 | { | |
7370 | free (used); | |
7371 | goto error_ret; | |
7372 | } | |
7373 | ||
7374 | if (sym_sec != toc) | |
7375 | continue; | |
7376 | ||
7377 | if (h != NULL) | |
7378 | val = h->root.u.def.value; | |
7379 | else | |
7380 | val = sym->st_value; | |
7381 | val += rel->r_addend; | |
7382 | ||
7383 | if (val >= toc->size) | |
7384 | continue; | |
7385 | ||
7386 | /* For the toc section, we only mark as used if | |
7387 | this entry itself isn't unused. */ | |
7388 | if (sec == toc | |
7389 | && !used[val >> 3] | |
7390 | && (used[rel->r_offset >> 3] | |
7391 | || !skip[rel->r_offset >> 3])) | |
7392 | /* Do all the relocs again, to catch reference | |
7393 | chains. */ | |
7394 | repeat = 1; | |
7395 | ||
7396 | used[val >> 3] = 1; | |
7397 | } | |
7398 | while (repeat); | |
7399 | } | |
7400 | ||
7401 | /* Merge the used and skip arrays. Assume that TOC | |
7402 | doublewords not appearing as either used or unused belong | |
7403 | to to an entry more than one doubleword in size. */ | |
7404 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7405 | drop < skip + (toc->size + 7) / 8; | |
7406 | ++drop, ++keep) | |
7407 | { | |
7408 | if (*keep) | |
7409 | { | |
7410 | *drop = 0; | |
7411 | last = 0; | |
7412 | } | |
7413 | else if (*drop) | |
7414 | { | |
7415 | some_unused = 1; | |
7416 | last = 1; | |
7417 | } | |
7418 | else | |
7419 | *drop = last; | |
7420 | } | |
7421 | ||
7422 | free (used); | |
7423 | ||
7424 | if (some_unused) | |
7425 | { | |
7426 | bfd_byte *contents, *src; | |
7427 | unsigned long off; | |
7428 | ||
7429 | /* Shuffle the toc contents, and at the same time convert the | |
7430 | skip array from booleans into offsets. */ | |
7431 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7432 | goto error_ret; | |
7433 | ||
7434 | elf_section_data (toc)->this_hdr.contents = contents; | |
7435 | ||
7436 | for (src = contents, off = 0, drop = skip; | |
7437 | src < contents + toc->size; | |
7438 | src += 8, ++drop) | |
7439 | { | |
7440 | if (*drop) | |
7441 | { | |
7442 | *drop = (unsigned long) -1; | |
7443 | off += 8; | |
7444 | } | |
7445 | else if (off != 0) | |
7446 | { | |
7447 | *drop = off; | |
7448 | memcpy (src - off, src, 8); | |
7449 | } | |
7450 | } | |
7451 | toc->rawsize = toc->size; | |
7452 | toc->size = src - contents - off; | |
7453 | ||
92b7a70f AM |
7454 | if (toc->reloc_count != 0) |
7455 | { | |
7456 | Elf_Internal_Rela *wrel; | |
7457 | bfd_size_type sz; | |
c5614fa4 | 7458 | |
92b7a70f AM |
7459 | /* Read toc relocs. */ |
7460 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7461 | TRUE); | |
7462 | if (relstart == NULL) | |
7463 | goto error_ret; | |
7464 | ||
7465 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7466 | wrel = relstart; | |
7467 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7468 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7469 | { | |
7470 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7471 | wrel->r_info = rel->r_info; | |
7472 | wrel->r_addend = rel->r_addend; | |
7473 | ++wrel; | |
7474 | } | |
8c1d1bb8 AM |
7475 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7476 | &local_syms, NULL, NULL)) | |
7477 | goto error_ret; | |
35090471 | 7478 | |
92b7a70f AM |
7479 | toc->reloc_count = wrel - relstart; |
7480 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7481 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7482 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7483 | } | |
c5614fa4 AM |
7484 | |
7485 | /* Adjust addends for relocs against the toc section sym. */ | |
7486 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7487 | { | |
7488 | if (sec->reloc_count == 0 | |
7489 | || elf_discarded_section (sec)) | |
7490 | continue; | |
7491 | ||
7492 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7493 | TRUE); | |
7494 | if (relstart == NULL) | |
7495 | goto error_ret; | |
7496 | ||
7497 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7498 | { | |
7499 | enum elf_ppc64_reloc_type r_type; | |
7500 | unsigned long r_symndx; | |
7501 | asection *sym_sec; | |
7502 | struct elf_link_hash_entry *h; | |
7503 | Elf_Internal_Sym *sym; | |
7504 | ||
7505 | r_type = ELF64_R_TYPE (rel->r_info); | |
7506 | switch (r_type) | |
7507 | { | |
7508 | default: | |
7509 | continue; | |
7510 | ||
7511 | case R_PPC64_TOC16: | |
7512 | case R_PPC64_TOC16_LO: | |
7513 | case R_PPC64_TOC16_HI: | |
7514 | case R_PPC64_TOC16_HA: | |
7515 | case R_PPC64_TOC16_DS: | |
7516 | case R_PPC64_TOC16_LO_DS: | |
7517 | case R_PPC64_ADDR64: | |
7518 | break; | |
7519 | } | |
7520 | ||
7521 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7522 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7523 | r_symndx, ibfd)) | |
7524 | goto error_ret; | |
7525 | ||
7526 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7527 | continue; | |
7528 | ||
7529 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7530 | } | |
7531 | } | |
7532 | ||
7533 | /* We shouldn't have local or global symbols defined in the TOC, | |
7534 | but handle them anyway. */ | |
7535 | if (local_syms != NULL) | |
7536 | { | |
7537 | Elf_Internal_Sym *sym; | |
7538 | ||
7539 | for (sym = local_syms; | |
7540 | sym < local_syms + symtab_hdr->sh_info; | |
7541 | ++sym) | |
7542 | if (sym->st_shndx != SHN_UNDEF | |
7543 | && (sym->st_shndx < SHN_LORESERVE | |
7544 | || sym->st_shndx > SHN_HIRESERVE) | |
7545 | && sym->st_value != 0 | |
7546 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7547 | { | |
7548 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7549 | sym->st_value -= skip[sym->st_value >> 3]; | |
7550 | else | |
7551 | { | |
7552 | (*_bfd_error_handler) | |
7553 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7554 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7555 | NULL)); | |
c5614fa4 AM |
7556 | sym->st_value = 0; |
7557 | sym->st_shndx = SHN_ABS; | |
7558 | } | |
7559 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7560 | } | |
7561 | } | |
7562 | ||
7563 | /* Finally, adjust any global syms defined in the toc. */ | |
7564 | if (toc_inf.global_toc_syms) | |
7565 | { | |
7566 | toc_inf.toc = toc; | |
7567 | toc_inf.skip = skip; | |
7568 | toc_inf.global_toc_syms = FALSE; | |
7569 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7570 | &toc_inf); | |
7571 | } | |
7572 | } | |
7573 | ||
7574 | if (local_syms != NULL | |
7575 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7576 | { | |
7577 | if (!info->keep_memory) | |
7578 | free (local_syms); | |
7579 | else | |
7580 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7581 | } | |
7582 | free (skip); | |
7583 | } | |
7584 | ||
7585 | return TRUE; | |
7586 | } | |
7587 | ||
65f38f15 AM |
7588 | /* Allocate space in .plt, .got and associated reloc sections for |
7589 | dynamic relocs. */ | |
5bd4f169 | 7590 | |
b34976b6 | 7591 | static bfd_boolean |
4ce794b7 | 7592 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7593 | { |
65f38f15 AM |
7594 | struct bfd_link_info *info; |
7595 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7596 | asection *s; |
65f38f15 AM |
7597 | struct ppc_link_hash_entry *eh; |
7598 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7599 | struct got_entry *gent; |
5bd4f169 | 7600 | |
e92d460e | 7601 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7602 | return TRUE; |
5bd4f169 | 7603 | |
e92d460e AM |
7604 | if (h->root.type == bfd_link_hash_warning) |
7605 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7606 | ||
65f38f15 AM |
7607 | info = (struct bfd_link_info *) inf; |
7608 | htab = ppc_hash_table (info); | |
5bd4f169 | 7609 | |
65f38f15 | 7610 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7611 | && h->dynindx != -1 |
9c7a29a3 | 7612 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7613 | { |
411e1bfb AM |
7614 | struct plt_entry *pent; |
7615 | bfd_boolean doneone = FALSE; | |
7616 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7617 | if (pent->plt.refcount > 0) | |
7618 | { | |
411e1bfb AM |
7619 | /* If this is the first .plt entry, make room for the special |
7620 | first entry. */ | |
4ce794b7 | 7621 | s = htab->plt; |
eea6121a AM |
7622 | if (s->size == 0) |
7623 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7624 | |
eea6121a | 7625 | pent->plt.offset = s->size; |
411e1bfb AM |
7626 | |
7627 | /* Make room for this entry. */ | |
eea6121a | 7628 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7629 | |
7630 | /* Make room for the .glink code. */ | |
4ce794b7 | 7631 | s = htab->glink; |
eea6121a AM |
7632 | if (s->size == 0) |
7633 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7634 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7635 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7636 | s->size += 4; | |
7637 | s->size += 2*4; | |
411e1bfb AM |
7638 | |
7639 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7640 | s = htab->relplt; |
eea6121a | 7641 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7642 | doneone = TRUE; |
7643 | } | |
7644 | else | |
7645 | pent->plt.offset = (bfd_vma) -1; | |
7646 | if (!doneone) | |
65f38f15 | 7647 | { |
411e1bfb | 7648 | h->plt.plist = NULL; |
f5385ebf | 7649 | h->needs_plt = 0; |
65f38f15 AM |
7650 | } |
7651 | } | |
7652 | else | |
7653 | { | |
411e1bfb | 7654 | h->plt.plist = NULL; |
f5385ebf | 7655 | h->needs_plt = 0; |
65f38f15 AM |
7656 | } |
7657 | ||
951fd09b AM |
7658 | eh = (struct ppc_link_hash_entry *) h; |
7659 | /* Run through the TLS GD got entries first if we're changing them | |
7660 | to TPREL. */ | |
e7b938ca | 7661 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7662 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7663 | if (gent->got.refcount > 0 | |
7664 | && (gent->tls_type & TLS_GD) != 0) | |
7665 | { | |
7666 | /* This was a GD entry that has been converted to TPREL. If | |
7667 | there happens to be a TPREL entry we can use that one. */ | |
7668 | struct got_entry *ent; | |
7669 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7670 | if (ent->got.refcount > 0 | |
7671 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7672 | && ent->addend == gent->addend |
7673 | && ent->owner == gent->owner) | |
951fd09b AM |
7674 | { |
7675 | gent->got.refcount = 0; | |
7676 | break; | |
7677 | } | |
7678 | ||
7679 | /* If not, then we'll be using our own TPREL entry. */ | |
7680 | if (gent->got.refcount != 0) | |
7681 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7682 | } | |
7683 | ||
411e1bfb AM |
7684 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7685 | if (gent->got.refcount > 0) | |
7686 | { | |
951fd09b AM |
7687 | bfd_boolean dyn; |
7688 | ||
411e1bfb | 7689 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7690 | Undefined weak syms won't yet be marked as dynamic, |
7691 | nor will all TLS symbols. */ | |
411e1bfb | 7692 | if (h->dynindx == -1 |
f5385ebf | 7693 | && !h->forced_local) |
411e1bfb | 7694 | { |
c152c796 | 7695 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7696 | return FALSE; |
7697 | } | |
65f38f15 | 7698 | |
d881513a | 7699 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7700 | && !h->def_dynamic) |
411e1bfb | 7701 | { |
e717da7e | 7702 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7703 | continue; |
411e1bfb | 7704 | } |
951fd09b | 7705 | |
e717da7e | 7706 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7707 | gent->got.offset = s->size; |
7708 | s->size | |
d881513a | 7709 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7710 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7711 | if ((info->shared |
7712 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7713 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7714 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7715 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7716 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7717 | ? 2 * sizeof (Elf64_External_Rela) |
7718 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7719 | } |
7720 | else | |
7721 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7722 | |
65f38f15 | 7723 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7724 | return TRUE; |
65f38f15 AM |
7725 | |
7726 | /* In the shared -Bsymbolic case, discard space allocated for | |
7727 | dynamic pc-relative relocs against symbols which turn out to be | |
7728 | defined in regular objects. For the normal shared case, discard | |
7729 | space for relocs that have become local due to symbol visibility | |
7730 | changes. */ | |
7731 | ||
7732 | if (info->shared) | |
7733 | { | |
9c7a29a3 AM |
7734 | /* Relocs that use pc_count are those that appear on a call insn, |
7735 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7736 | generated via assembly. We want calls to protected symbols to | |
7737 | resolve directly to the function rather than going via the plt. | |
7738 | If people want function pointer comparisons to work as expected | |
7739 | then they should avoid writing weird assembly. */ | |
09695f56 | 7740 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7741 | { |
7742 | struct ppc_dyn_relocs **pp; | |
7743 | ||
7744 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7745 | { |
65f38f15 AM |
7746 | p->count -= p->pc_count; |
7747 | p->pc_count = 0; | |
7748 | if (p->count == 0) | |
7749 | *pp = p->next; | |
7750 | else | |
7751 | pp = &p->next; | |
5bd4f169 | 7752 | } |
65f38f15 | 7753 | } |
4e795f50 AM |
7754 | |
7755 | /* Also discard relocs on undefined weak syms with non-default | |
7756 | visibility. */ | |
cab87ef9 AM |
7757 | if (eh->dyn_relocs != NULL |
7758 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7759 | { |
7760 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7761 | eh->dyn_relocs = NULL; | |
7762 | ||
7763 | /* Make sure this symbol is output as a dynamic symbol. | |
7764 | Undefined weak syms won't yet be marked as dynamic. */ | |
7765 | else if (h->dynindx == -1 | |
7766 | && !h->forced_local) | |
7767 | { | |
7768 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7769 | return FALSE; | |
7770 | } | |
7771 | } | |
65f38f15 | 7772 | } |
f4656909 | 7773 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7774 | { |
7775 | /* For the non-shared case, discard space for relocs against | |
7776 | symbols which turn out to need copy relocs or are not | |
7777 | dynamic. */ | |
7778 | ||
f5385ebf AM |
7779 | if (!h->non_got_ref |
7780 | && h->def_dynamic | |
7781 | && !h->def_regular) | |
65f38f15 AM |
7782 | { |
7783 | /* Make sure this symbol is output as a dynamic symbol. | |
7784 | Undefined weak syms won't yet be marked as dynamic. */ | |
7785 | if (h->dynindx == -1 | |
f5385ebf | 7786 | && !h->forced_local) |
65f38f15 | 7787 | { |
c152c796 | 7788 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7789 | return FALSE; |
65f38f15 AM |
7790 | } |
7791 | ||
7792 | /* If that succeeded, we know we'll be keeping all the | |
7793 | relocs. */ | |
7794 | if (h->dynindx != -1) | |
7795 | goto keep; | |
7796 | } | |
7797 | ||
7798 | eh->dyn_relocs = NULL; | |
7799 | ||
ec338859 | 7800 | keep: ; |
65f38f15 AM |
7801 | } |
7802 | ||
7803 | /* Finally, allocate space. */ | |
7804 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7805 | { | |
7806 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7807 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7808 | } |
7809 | ||
b34976b6 | 7810 | return TRUE; |
65f38f15 AM |
7811 | } |
7812 | ||
7813 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7814 | ||
b34976b6 | 7815 | static bfd_boolean |
4ce794b7 | 7816 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7817 | { |
7818 | struct ppc_link_hash_entry *eh; | |
7819 | struct ppc_dyn_relocs *p; | |
7820 | ||
e92d460e AM |
7821 | if (h->root.type == bfd_link_hash_warning) |
7822 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7823 | ||
65f38f15 AM |
7824 | eh = (struct ppc_link_hash_entry *) h; |
7825 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7826 | { | |
7827 | asection *s = p->sec->output_section; | |
7828 | ||
7829 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7830 | { | |
4ce794b7 | 7831 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7832 | |
7833 | info->flags |= DF_TEXTREL; | |
7834 | ||
7835 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7836 | return FALSE; |
65f38f15 AM |
7837 | } |
7838 | } | |
b34976b6 | 7839 | return TRUE; |
65f38f15 AM |
7840 | } |
7841 | ||
7842 | /* Set the sizes of the dynamic sections. */ | |
7843 | ||
b34976b6 | 7844 | static bfd_boolean |
4ce794b7 AM |
7845 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7846 | struct bfd_link_info *info) | |
65f38f15 AM |
7847 | { |
7848 | struct ppc_link_hash_table *htab; | |
7849 | bfd *dynobj; | |
7850 | asection *s; | |
b34976b6 | 7851 | bfd_boolean relocs; |
65f38f15 AM |
7852 | bfd *ibfd; |
7853 | ||
7854 | htab = ppc_hash_table (info); | |
7855 | dynobj = htab->elf.dynobj; | |
7856 | if (dynobj == NULL) | |
7857 | abort (); | |
7858 | ||
7859 | if (htab->elf.dynamic_sections_created) | |
7860 | { | |
7861 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7862 | if (info->executable) |
65f38f15 AM |
7863 | { |
7864 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7865 | if (s == NULL) | |
7866 | abort (); | |
eea6121a | 7867 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7868 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7869 | } | |
7870 | } | |
7871 | ||
7872 | /* Set up .got offsets for local syms, and space for local dynamic | |
7873 | relocs. */ | |
7874 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7875 | { | |
411e1bfb AM |
7876 | struct got_entry **lgot_ents; |
7877 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7878 | char *lgot_masks; |
65f38f15 AM |
7879 | bfd_size_type locsymcount; |
7880 | Elf_Internal_Shdr *symtab_hdr; | |
7881 | asection *srel; | |
7882 | ||
ee75fd95 | 7883 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7884 | continue; |
7885 | ||
e717da7e AM |
7886 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7887 | { | |
7888 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7889 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7890 | s->size += 16; | |
e717da7e AM |
7891 | if (info->shared) |
7892 | { | |
7893 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7894 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7895 | } |
7896 | } | |
7897 | else | |
7898 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7899 | ||
65f38f15 AM |
7900 | for (s = ibfd->sections; s != NULL; s = s->next) |
7901 | { | |
ec338859 | 7902 | struct ppc_dyn_relocs *p; |
65f38f15 | 7903 | |
6edfbbad | 7904 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7905 | { |
ec338859 AM |
7906 | if (!bfd_is_abs_section (p->sec) |
7907 | && bfd_is_abs_section (p->sec->output_section)) | |
7908 | { | |
7909 | /* Input section has been discarded, either because | |
7910 | it is a copy of a linkonce section or due to | |
7911 | linker script /DISCARD/, so we'll be discarding | |
7912 | the relocs too. */ | |
7913 | } | |
248866a8 | 7914 | else if (p->count != 0) |
ec338859 AM |
7915 | { |
7916 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7917 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7918 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7919 | info->flags |= DF_TEXTREL; | |
ec338859 | 7920 | } |
65f38f15 AM |
7921 | } |
7922 | } | |
7923 | ||
411e1bfb AM |
7924 | lgot_ents = elf_local_got_ents (ibfd); |
7925 | if (!lgot_ents) | |
65f38f15 AM |
7926 | continue; |
7927 | ||
7928 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7929 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7930 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7931 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7932 | s = ppc64_elf_tdata (ibfd)->got; |
7933 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7934 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7935 | { |
411e1bfb AM |
7936 | struct got_entry *ent; |
7937 | ||
7938 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7939 | if (ent->got.refcount > 0) | |
7940 | { | |
e7b938ca | 7941 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7942 | { |
e717da7e | 7943 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7944 | { |
eea6121a AM |
7945 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7946 | s->size += 16; | |
411e1bfb | 7947 | if (info->shared) |
eea6121a | 7948 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7949 | } |
e717da7e | 7950 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7951 | } |
7952 | else | |
7953 | { | |
eea6121a | 7954 | ent->got.offset = s->size; |
e7b938ca | 7955 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7956 | { |
eea6121a | 7957 | s->size += 16; |
411e1bfb | 7958 | if (info->shared) |
eea6121a | 7959 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7960 | } |
7961 | else | |
7962 | { | |
eea6121a | 7963 | s->size += 8; |
411e1bfb | 7964 | if (info->shared) |
eea6121a | 7965 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7966 | } |
7967 | } | |
7968 | } | |
7969 | else | |
7970 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7971 | } |
7972 | } | |
7973 | ||
7974 | /* Allocate global sym .plt and .got entries, and space for global | |
7975 | sym dynamic relocs. */ | |
4ce794b7 | 7976 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7977 | |
7978 | /* We now have determined the sizes of the various dynamic sections. | |
7979 | Allocate memory for them. */ | |
b34976b6 | 7980 | relocs = FALSE; |
65f38f15 AM |
7981 | for (s = dynobj->sections; s != NULL; s = s->next) |
7982 | { | |
7983 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7984 | continue; | |
7985 | ||
4ce794b7 | 7986 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7987 | /* These haven't been allocated yet; don't strip. */ |
7988 | continue; | |
e717da7e AM |
7989 | else if (s == htab->got |
7990 | || s == htab->plt | |
c456f082 AM |
7991 | || s == htab->glink |
7992 | || s == htab->dynbss) | |
65f38f15 AM |
7993 | { |
7994 | /* Strip this section if we don't need it; see the | |
7995 | comment below. */ | |
5bd4f169 | 7996 | } |
0112cd26 | 7997 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 7998 | { |
c456f082 | 7999 | if (s->size != 0) |
5bd4f169 | 8000 | { |
4ce794b7 | 8001 | if (s != htab->relplt) |
b34976b6 | 8002 | relocs = TRUE; |
5bd4f169 AM |
8003 | |
8004 | /* We use the reloc_count field as a counter if we need | |
8005 | to copy relocs into the output file. */ | |
8006 | s->reloc_count = 0; | |
8007 | } | |
8008 | } | |
65f38f15 | 8009 | else |
5bd4f169 AM |
8010 | { |
8011 | /* It's not one of our sections, so don't allocate space. */ | |
8012 | continue; | |
8013 | } | |
8014 | ||
eea6121a | 8015 | if (s->size == 0) |
5bd4f169 | 8016 | { |
c456f082 AM |
8017 | /* If we don't need this section, strip it from the |
8018 | output file. This is mostly to handle .rela.bss and | |
8019 | .rela.plt. We must create both sections in | |
8020 | create_dynamic_sections, because they must be created | |
8021 | before the linker maps input sections to output | |
8022 | sections. The linker does that before | |
8023 | adjust_dynamic_symbol is called, and it is that | |
8024 | function which decides whether anything needs to go | |
8025 | into these sections. */ | |
8423293d | 8026 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8027 | continue; |
8028 | } | |
8029 | ||
c456f082 | 8030 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8031 | continue; |
8032 | ||
65f38f15 AM |
8033 | /* Allocate memory for the section contents. We use bfd_zalloc |
8034 | here in case unused entries are not reclaimed before the | |
8035 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8036 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8037 | sections instead of garbage. | |
8038 | We also rely on the section contents being zero when writing | |
8039 | the GOT. */ | |
eea6121a | 8040 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8041 | if (s->contents == NULL) |
b34976b6 | 8042 | return FALSE; |
5bd4f169 AM |
8043 | } |
8044 | ||
e717da7e AM |
8045 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8046 | { | |
ee75fd95 | 8047 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
8048 | continue; |
8049 | ||
e717da7e AM |
8050 | s = ppc64_elf_tdata (ibfd)->got; |
8051 | if (s != NULL && s != htab->got) | |
8052 | { | |
eea6121a | 8053 | if (s->size == 0) |
8423293d | 8054 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8055 | else |
8056 | { | |
eea6121a | 8057 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8058 | if (s->contents == NULL) |
8059 | return FALSE; | |
8060 | } | |
8061 | } | |
8062 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8063 | if (s != NULL) | |
8064 | { | |
eea6121a | 8065 | if (s->size == 0) |
8423293d | 8066 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8067 | else |
8068 | { | |
eea6121a | 8069 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8070 | if (s->contents == NULL) |
8071 | return FALSE; | |
8072 | relocs = TRUE; | |
8073 | s->reloc_count = 0; | |
8074 | } | |
8075 | } | |
8076 | } | |
8077 | ||
e86ce104 | 8078 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8079 | { |
8080 | /* Add some entries to the .dynamic section. We fill in the | |
8081 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8082 | must add the entries now so that we get the correct size for | |
8083 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8084 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8085 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8086 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8087 | |
36af4a4e | 8088 | if (info->executable) |
5bd4f169 | 8089 | { |
dc810e39 | 8090 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8091 | return FALSE; |
5bd4f169 AM |
8092 | } |
8093 | ||
eea6121a | 8094 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8095 | { |
dc810e39 AM |
8096 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8097 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8098 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8099 | || !add_dynamic_entry (DT_JMPREL, 0) |
8100 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8101 | return FALSE; |
5bd4f169 AM |
8102 | } |
8103 | ||
19397422 AM |
8104 | if (NO_OPD_RELOCS) |
8105 | { | |
8106 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8107 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8108 | return FALSE; |
19397422 AM |
8109 | } |
8110 | ||
5bd4f169 AM |
8111 | if (relocs) |
8112 | { | |
dc810e39 AM |
8113 | if (!add_dynamic_entry (DT_RELA, 0) |
8114 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8115 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8116 | return FALSE; |
5bd4f169 | 8117 | |
65f38f15 AM |
8118 | /* If any dynamic relocs apply to a read-only section, |
8119 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8120 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8121 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8122 | |
65f38f15 | 8123 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8124 | { |
65f38f15 | 8125 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8126 | return FALSE; |
5bd4f169 | 8127 | } |
5bd4f169 | 8128 | } |
5bd4f169 | 8129 | } |
65f38f15 | 8130 | #undef add_dynamic_entry |
5bd4f169 | 8131 | |
b34976b6 | 8132 | return TRUE; |
5bd4f169 AM |
8133 | } |
8134 | ||
721956f4 | 8135 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8136 | |
4ce794b7 AM |
8137 | static inline enum ppc_stub_type |
8138 | ppc_type_of_stub (asection *input_sec, | |
8139 | const Elf_Internal_Rela *rel, | |
8140 | struct ppc_link_hash_entry **hash, | |
8141 | bfd_vma destination) | |
5bd4f169 | 8142 | { |
721956f4 AM |
8143 | struct ppc_link_hash_entry *h = *hash; |
8144 | bfd_vma location; | |
8145 | bfd_vma branch_offset; | |
8146 | bfd_vma max_branch_offset; | |
4ce794b7 | 8147 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8148 | |
721956f4 AM |
8149 | if (h != NULL) |
8150 | { | |
7fe2b9a6 AM |
8151 | struct ppc_link_hash_entry *fdh = h; |
8152 | if (fdh->oh != NULL | |
8153 | && fdh->oh->is_func_descriptor) | |
8154 | fdh = fdh->oh; | |
8387904d | 8155 | |
7fe2b9a6 | 8156 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8157 | { |
411e1bfb | 8158 | struct plt_entry *ent; |
8387904d | 8159 | |
7fe2b9a6 | 8160 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8161 | if (ent->addend == rel->r_addend |
8162 | && ent->plt.offset != (bfd_vma) -1) | |
8163 | { | |
7fe2b9a6 | 8164 | *hash = fdh; |
411e1bfb AM |
8165 | return ppc_stub_plt_call; |
8166 | } | |
5bd4f169 AM |
8167 | } |
8168 | ||
7fe2b9a6 AM |
8169 | /* Here, we know we don't have a plt entry. If we don't have a |
8170 | either a defined function descriptor or a defined entry symbol | |
8171 | in a regular object file, then it is pointless trying to make | |
8172 | any other type of stub. */ | |
8173 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8174 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8175 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8176 | && !((h->elf.root.type == bfd_link_hash_defined | |
8177 | || h->elf.root.type == bfd_link_hash_defweak) | |
8178 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8179 | return ppc_stub_none; |
5d1634d7 | 8180 | } |
5d1634d7 | 8181 | |
721956f4 AM |
8182 | /* Determine where the call point is. */ |
8183 | location = (input_sec->output_offset | |
8184 | + input_sec->output_section->vma | |
8185 | + rel->r_offset); | |
5d1634d7 | 8186 | |
721956f4 AM |
8187 | branch_offset = destination - location; |
8188 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8189 | |
721956f4 AM |
8190 | /* Determine if a long branch stub is needed. */ |
8191 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8192 | if (r_type != R_PPC64_REL24) |
721956f4 | 8193 | max_branch_offset = 1 << 15; |
5d1634d7 | 8194 | |
721956f4 AM |
8195 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8196 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8197 | is needed later. */ | |
8198 | return ppc_stub_long_branch; | |
5d1634d7 | 8199 | |
721956f4 | 8200 | return ppc_stub_none; |
5d1634d7 AM |
8201 | } |
8202 | ||
8203 | /* Build a .plt call stub. */ | |
8204 | ||
4ce794b7 AM |
8205 | static inline bfd_byte * |
8206 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8207 | { |
8208 | #define PPC_LO(v) ((v) & 0xffff) | |
8209 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8210 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8211 | ||
5d1634d7 | 8212 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 8213 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
8214 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
8215 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8216 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8217 | offset += 8; |
8218 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
8219 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8220 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8221 | offset += 8; |
8222 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8223 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8224 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8225 | return p; | |
8226 | } | |
8227 | ||
b34976b6 | 8228 | static bfd_boolean |
4ce794b7 | 8229 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8230 | { |
721956f4 AM |
8231 | struct ppc_stub_hash_entry *stub_entry; |
8232 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8233 | struct bfd_link_info *info; |
8234 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8235 | bfd_byte *loc; |
8236 | bfd_byte *p; | |
8237 | unsigned int indx; | |
411e1bfb | 8238 | struct plt_entry *ent; |
ee75fd95 | 8239 | bfd_vma dest, off; |
721956f4 | 8240 | int size; |
5d1634d7 | 8241 | |
721956f4 AM |
8242 | /* Massage our args to the form they really have. */ |
8243 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8244 | info = in_arg; |
5d1634d7 | 8245 | |
5d1634d7 AM |
8246 | htab = ppc_hash_table (info); |
8247 | ||
721956f4 | 8248 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8249 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8250 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8251 | |
4ce794b7 | 8252 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8253 | switch (stub_entry->stub_type) |
5d1634d7 | 8254 | { |
721956f4 | 8255 | case ppc_stub_long_branch: |
ad8e1ba5 | 8256 | case ppc_stub_long_branch_r2off: |
721956f4 | 8257 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8258 | off = dest = (stub_entry->target_value |
8259 | + stub_entry->target_section->output_offset | |
8260 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8261 | |
721956f4 AM |
8262 | /* And this is where we are coming from. */ |
8263 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8264 | + stub_entry->stub_sec->output_offset |
8265 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8266 | |
ad8e1ba5 AM |
8267 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
8268 | size = 4; | |
8269 | else | |
8270 | { | |
8271 | bfd_vma r2off; | |
8272 | ||
8273 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8274 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8275 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8276 | loc += 4; |
97b639ba | 8277 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8278 | loc += 4; |
97b639ba | 8279 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8280 | loc += 4; |
8281 | off -= 12; | |
8282 | size = 16; | |
8283 | } | |
97b639ba | 8284 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8285 | |
5c3dead3 AM |
8286 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8287 | { | |
8288 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8289 | stub_entry->root.string); | |
8290 | htab->stub_error = TRUE; | |
8291 | return FALSE; | |
8292 | } | |
ee75fd95 AM |
8293 | |
8294 | if (info->emitrelocations) | |
8295 | { | |
8296 | Elf_Internal_Rela *relocs, *r; | |
8297 | struct bfd_elf_section_data *elfsec_data; | |
8298 | ||
8299 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8300 | relocs = elfsec_data->relocs; | |
8301 | if (relocs == NULL) | |
8302 | { | |
8303 | bfd_size_type relsize; | |
8304 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8305 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8306 | if (relocs == NULL) | |
8307 | return FALSE; | |
8308 | elfsec_data->relocs = relocs; | |
8309 | elfsec_data->rel_hdr.sh_size = relsize; | |
8310 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8311 | stub_entry->stub_sec->reloc_count = 0; | |
8312 | } | |
8313 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8314 | stub_entry->stub_sec->reloc_count += 1; | |
8315 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8316 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8317 | r->r_addend = dest; | |
8318 | if (stub_entry->h != NULL) | |
8319 | { | |
8320 | struct elf_link_hash_entry **hashes; | |
8321 | unsigned long symndx; | |
8322 | struct ppc_link_hash_entry *h; | |
8323 | ||
8324 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8325 | if (hashes == NULL) | |
8326 | { | |
8327 | bfd_size_type hsize; | |
8328 | ||
8329 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8330 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8331 | if (hashes == NULL) | |
8332 | return FALSE; | |
8333 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8334 | htab->stub_globals = 1; | |
8335 | } | |
8336 | symndx = htab->stub_globals++; | |
8337 | h = stub_entry->h; | |
8338 | hashes[symndx] = &h->elf; | |
8339 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8340 | if (h->oh != NULL && h->oh->is_func) | |
8341 | h = h->oh; | |
8342 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8343 | /* H is an opd symbol. The addend must be zero. */ | |
8344 | r->r_addend = 0; | |
8345 | else | |
8346 | { | |
8347 | off = (h->elf.root.u.def.value | |
8348 | + h->elf.root.u.def.section->output_offset | |
8349 | + h->elf.root.u.def.section->output_section->vma); | |
8350 | r->r_addend -= off; | |
8351 | } | |
8352 | } | |
8353 | } | |
721956f4 | 8354 | break; |
e86ce104 | 8355 | |
721956f4 | 8356 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8357 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8358 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8359 | stub_entry->root.string + 9, | |
b34976b6 | 8360 | FALSE, FALSE); |
721956f4 AM |
8361 | if (br_entry == NULL) |
8362 | { | |
8363 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8364 | stub_entry->root.string); |
b34976b6 AM |
8365 | htab->stub_error = TRUE; |
8366 | return FALSE; | |
721956f4 AM |
8367 | } |
8368 | ||
8369 | off = (stub_entry->target_value | |
8370 | + stub_entry->target_section->output_offset | |
8371 | + stub_entry->target_section->output_section->vma); | |
8372 | ||
4ce794b7 AM |
8373 | bfd_put_64 (htab->brlt->owner, off, |
8374 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8375 | |
ee75fd95 | 8376 | if (htab->relbrlt != NULL) |
721956f4 AM |
8377 | { |
8378 | /* Create a reloc for the branch lookup table entry. */ | |
8379 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8380 | bfd_byte *rl; |
5d1634d7 | 8381 | |
721956f4 | 8382 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8383 | + htab->brlt->output_offset |
8384 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8385 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8386 | rela.r_addend = off; | |
8387 | ||
4ce794b7 AM |
8388 | rl = htab->relbrlt->contents; |
8389 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8390 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 | 8391 | } |
84f5d08e AM |
8392 | else if (info->emitrelocations) |
8393 | { | |
8394 | Elf_Internal_Rela *relocs, *r; | |
8395 | struct bfd_elf_section_data *elfsec_data; | |
8396 | ||
8397 | elfsec_data = elf_section_data (htab->brlt); | |
8398 | relocs = elfsec_data->relocs; | |
8399 | if (relocs == NULL) | |
8400 | { | |
8401 | bfd_size_type relsize; | |
8402 | relsize = htab->brlt->reloc_count * sizeof (*relocs); | |
8403 | relocs = bfd_alloc (htab->brlt->owner, relsize); | |
8404 | if (relocs == NULL) | |
8405 | return FALSE; | |
8406 | elfsec_data->relocs = relocs; | |
8407 | elfsec_data->rel_hdr.sh_size = relsize; | |
8408 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8409 | htab->brlt->reloc_count = 0; | |
8410 | } | |
8411 | r = relocs + htab->brlt->reloc_count; | |
8412 | htab->brlt->reloc_count += 1; | |
8413 | r->r_offset = (br_entry->offset | |
8414 | + htab->brlt->output_offset | |
8415 | + htab->brlt->output_section->vma); | |
8416 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
8417 | r->r_addend = off; | |
8418 | } | |
721956f4 AM |
8419 | |
8420 | off = (br_entry->offset | |
4ce794b7 AM |
8421 | + htab->brlt->output_offset |
8422 | + htab->brlt->output_section->vma | |
8423 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8424 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8425 | |
ad8e1ba5 | 8426 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8427 | { |
8428 | (*_bfd_error_handler) | |
e86ce104 | 8429 | (_("linkage table error against `%s'"), |
721956f4 | 8430 | stub_entry->root.string); |
5d1634d7 | 8431 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8432 | htab->stub_error = TRUE; |
8433 | return FALSE; | |
5d1634d7 | 8434 | } |
41bd81ab | 8435 | |
721956f4 | 8436 | indx = off; |
ad8e1ba5 AM |
8437 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8438 | { | |
97b639ba | 8439 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8440 | loc += 4; |
97b639ba | 8441 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8442 | size = 16; |
8443 | } | |
8444 | else | |
8445 | { | |
8446 | bfd_vma r2off; | |
8447 | ||
8448 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8449 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8450 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8451 | loc += 4; |
97b639ba | 8452 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8453 | loc += 4; |
97b639ba | 8454 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8455 | loc += 4; |
97b639ba | 8456 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8457 | loc += 4; |
97b639ba | 8458 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8459 | size = 28; |
8460 | } | |
8461 | loc += 4; | |
97b639ba | 8462 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8463 | loc += 4; |
97b639ba | 8464 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8465 | break; |
5d1634d7 | 8466 | |
721956f4 | 8467 | case ppc_stub_plt_call: |
c862ae31 AM |
8468 | /* Do the best we can for shared libraries built without |
8469 | exporting ".foo" for each "foo". This can happen when symbol | |
8470 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8471 | if (stub_entry->h->oh != NULL |
8472 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8473 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8474 | { |
8475 | /* Point the symbol at the stub. There may be multiple stubs, | |
8476 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8477 | defined somewhere. Maybe defining the symbol in the stub |
8478 | section is a silly idea. If we didn't do this, htab->top_id | |
8479 | could disappear. */ | |
34814b9f AM |
8480 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8481 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8482 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8483 | } |
8484 | ||
721956f4 | 8485 | /* Now build the stub. */ |
411e1bfb AM |
8486 | off = (bfd_vma) -1; |
8487 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8488 | if (ent->addend == stub_entry->addend) | |
8489 | { | |
8490 | off = ent->plt.offset; | |
8491 | break; | |
8492 | } | |
721956f4 AM |
8493 | if (off >= (bfd_vma) -2) |
8494 | abort (); | |
8495 | ||
8496 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8497 | off += (htab->plt->output_offset |
8498 | + htab->plt->output_section->vma | |
8499 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8500 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8501 | |
ad8e1ba5 | 8502 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8503 | { |
8504 | (*_bfd_error_handler) | |
8505 | (_("linkage table error against `%s'"), | |
8506 | stub_entry->h->elf.root.root.string); | |
8507 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8508 | htab->stub_error = TRUE; |
8509 | return FALSE; | |
721956f4 AM |
8510 | } |
8511 | ||
97b639ba | 8512 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8513 | size = p - loc; |
8514 | break; | |
8515 | ||
8516 | default: | |
8517 | BFD_FAIL (); | |
b34976b6 | 8518 | return FALSE; |
721956f4 AM |
8519 | } |
8520 | ||
eea6121a | 8521 | stub_entry->stub_sec->size += size; |
97b639ba | 8522 | |
ee75fd95 | 8523 | if (htab->emit_stub_syms) |
97b639ba AM |
8524 | { |
8525 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8526 | size_t len1, len2; |
8527 | char *name; | |
8528 | const char *const stub_str[] = { "long_branch", | |
8529 | "long_branch_r2off", | |
8530 | "plt_branch", | |
8531 | "plt_branch_r2off", | |
8532 | "plt_call" }; | |
8533 | ||
8534 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8535 | len2 = strlen (stub_entry->root.string); | |
8536 | name = bfd_malloc (len1 + len2 + 2); | |
8537 | if (name == NULL) | |
8538 | return FALSE; | |
8539 | memcpy (name, stub_entry->root.string, 9); | |
8540 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8541 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8542 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8543 | if (h == NULL) |
8544 | return FALSE; | |
8545 | if (h->root.type == bfd_link_hash_new) | |
8546 | { | |
8547 | h->root.type = bfd_link_hash_defined; | |
8548 | h->root.u.def.section = stub_entry->stub_sec; | |
8549 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8550 | h->ref_regular = 1; |
8551 | h->def_regular = 1; | |
8552 | h->ref_regular_nonweak = 1; | |
8553 | h->forced_local = 1; | |
8554 | h->non_elf = 0; | |
97b639ba AM |
8555 | } |
8556 | } | |
8557 | ||
b34976b6 | 8558 | return TRUE; |
721956f4 AM |
8559 | } |
8560 | ||
8561 | /* As above, but don't actually build the stub. Just bump offset so | |
8562 | we know stub section sizes, and select plt_branch stubs where | |
8563 | long_branch stubs won't do. */ | |
8564 | ||
b34976b6 | 8565 | static bfd_boolean |
4ce794b7 | 8566 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8567 | { |
8568 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8569 | struct bfd_link_info *info; |
721956f4 AM |
8570 | struct ppc_link_hash_table *htab; |
8571 | bfd_vma off; | |
8572 | int size; | |
8573 | ||
8574 | /* Massage our args to the form they really have. */ | |
8575 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8576 | info = in_arg; |
8577 | ||
8578 | htab = ppc_hash_table (info); | |
721956f4 AM |
8579 | |
8580 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8581 | { | |
411e1bfb | 8582 | struct plt_entry *ent; |
58ac9f71 | 8583 | off = (bfd_vma) -1; |
411e1bfb AM |
8584 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8585 | if (ent->addend == stub_entry->addend) | |
8586 | { | |
8587 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8588 | break; | |
8589 | } | |
58ac9f71 | 8590 | if (off >= (bfd_vma) -2) |
411e1bfb | 8591 | abort (); |
4ce794b7 AM |
8592 | off += (htab->plt->output_offset |
8593 | + htab->plt->output_section->vma | |
8594 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8595 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8596 | |
ad8e1ba5 | 8597 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8598 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8599 | size += 4; |
8600 | } | |
8601 | else | |
8602 | { | |
ad8e1ba5 AM |
8603 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8604 | variants. */ | |
721956f4 AM |
8605 | off = (stub_entry->target_value |
8606 | + stub_entry->target_section->output_offset | |
8607 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8608 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8609 | + stub_entry->stub_sec->output_offset |
8610 | + stub_entry->stub_sec->output_section->vma); | |
8611 | ||
ad8e1ba5 AM |
8612 | /* Reset the stub type from the plt variant in case we now |
8613 | can reach with a shorter stub. */ | |
8614 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8615 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8616 | ||
8617 | size = 4; | |
8618 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8619 | { | |
8620 | off -= 12; | |
8621 | size = 16; | |
8622 | } | |
8623 | ||
8624 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8625 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8626 | { | |
8627 | struct ppc_branch_hash_entry *br_entry; | |
8628 | ||
8629 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8630 | stub_entry->root.string + 9, | |
b34976b6 | 8631 | TRUE, FALSE); |
721956f4 AM |
8632 | if (br_entry == NULL) |
8633 | { | |
8634 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8635 | stub_entry->root.string); |
b34976b6 AM |
8636 | htab->stub_error = TRUE; |
8637 | return FALSE; | |
721956f4 AM |
8638 | } |
8639 | ||
8640 | if (br_entry->iter != htab->stub_iteration) | |
8641 | { | |
8642 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8643 | br_entry->offset = htab->brlt->size; |
8644 | htab->brlt->size += 8; | |
63bc6f6c | 8645 | |
ee75fd95 | 8646 | if (htab->relbrlt != NULL) |
eea6121a | 8647 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
8648 | else if (info->emitrelocations) |
8649 | { | |
8650 | htab->brlt->reloc_count += 1; | |
8651 | htab->brlt->flags |= SEC_RELOC; | |
8652 | } | |
721956f4 | 8653 | } |
ad8e1ba5 AM |
8654 | |
8655 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8656 | size = 16; |
ad8e1ba5 AM |
8657 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8658 | size = 28; | |
721956f4 | 8659 | } |
84f5d08e AM |
8660 | else if (info->emitrelocations) |
8661 | { | |
8662 | stub_entry->stub_sec->reloc_count += 1; | |
8663 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
8664 | } | |
721956f4 AM |
8665 | } |
8666 | ||
eea6121a | 8667 | stub_entry->stub_sec->size += size; |
b34976b6 | 8668 | return TRUE; |
721956f4 AM |
8669 | } |
8670 | ||
8671 | /* Set up various things so that we can make a list of input sections | |
8672 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8673 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8674 | |
8675 | int | |
4c52953f AM |
8676 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8677 | struct bfd_link_info *info, | |
8678 | int no_multi_toc) | |
721956f4 AM |
8679 | { |
8680 | bfd *input_bfd; | |
734b6cf9 | 8681 | int top_id, top_index, id; |
721956f4 | 8682 | asection *section; |
734b6cf9 | 8683 | asection **input_list; |
721956f4 AM |
8684 | bfd_size_type amt; |
8685 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8686 | ||
4c52953f AM |
8687 | htab->no_multi_toc = no_multi_toc; |
8688 | ||
4ce794b7 | 8689 | if (htab->brlt == NULL) |
721956f4 AM |
8690 | return 0; |
8691 | ||
1e2f5b6e | 8692 | /* Find the top input section id. */ |
3d6f9012 | 8693 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8694 | input_bfd != NULL; |
8695 | input_bfd = input_bfd->link_next) | |
8696 | { | |
721956f4 AM |
8697 | for (section = input_bfd->sections; |
8698 | section != NULL; | |
8699 | section = section->next) | |
8700 | { | |
8701 | if (top_id < section->id) | |
8702 | top_id = section->id; | |
8703 | } | |
8704 | } | |
721956f4 | 8705 | |
8f3bab57 | 8706 | htab->top_id = top_id; |
721956f4 | 8707 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8708 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8709 | if (htab->stub_group == NULL) |
8710 | return -1; | |
8711 | ||
3d6f9012 AM |
8712 | /* Set toc_off for com, und, abs and ind sections. */ |
8713 | for (id = 0; id < 3; id++) | |
8714 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8715 | |
3d6f9012 | 8716 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8717 | |
8718 | /* We can't use output_bfd->section_count here to find the top output | |
8719 | section index as some sections may have been removed, and | |
8423293d | 8720 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8721 | for (section = output_bfd->sections, top_index = 0; |
8722 | section != NULL; | |
8723 | section = section->next) | |
8724 | { | |
8725 | if (top_index < section->index) | |
8726 | top_index = section->index; | |
8727 | } | |
8728 | ||
8729 | htab->top_index = top_index; | |
8730 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8731 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8732 | htab->input_list = input_list; |
8733 | if (input_list == NULL) | |
8734 | return -1; | |
8735 | ||
721956f4 AM |
8736 | return 1; |
8737 | } | |
8738 | ||
e717da7e AM |
8739 | /* The linker repeatedly calls this function for each TOC input section |
8740 | and linker generated GOT section. Group input bfds such that the toc | |
8741 | within a group is less than 64k in size. Will break with cute linker | |
8742 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8743 | |
8744 | void | |
4ce794b7 | 8745 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8746 | { |
8747 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8748 | ||
4c52953f AM |
8749 | if (!htab->no_multi_toc) |
8750 | { | |
8751 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8752 | bfd_vma off = addr - htab->toc_curr; | |
8753 | ||
8754 | if (off + isec->size > 0x10000) | |
8755 | htab->toc_curr = addr; | |
99877b66 | 8756 | |
4c52953f AM |
8757 | elf_gp (isec->owner) = (htab->toc_curr |
8758 | - elf_gp (isec->output_section->owner) | |
8759 | + TOC_BASE_OFF); | |
8760 | } | |
ad8e1ba5 AM |
8761 | } |
8762 | ||
8763 | /* Called after the last call to the above function. */ | |
8764 | ||
8765 | void | |
4c52953f | 8766 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8767 | { |
8768 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8769 | |
4c52953f AM |
8770 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8771 | ||
ad8e1ba5 AM |
8772 | /* toc_curr tracks the TOC offset used for code sections below in |
8773 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8774 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8775 | } |
8776 | ||
9b5ecbd0 AM |
8777 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8778 | calls, then there's no need to use toc adjusting stubs when branching | |
8779 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8780 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8781 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8782 | for a stub was detected. If called from the top level, a return of | |
8783 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8784 | |
8785 | static int | |
4ce794b7 | 8786 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8787 | { |
4c52953f AM |
8788 | Elf_Internal_Rela *relstart, *rel; |
8789 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8790 | int ret; |
4c52953f | 8791 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8792 | |
772119ce AM |
8793 | /* We know none of our code bearing sections will need toc stubs. */ |
8794 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8795 | return 0; | |
8796 | ||
eea6121a | 8797 | if (isec->size == 0) |
082c50f8 AM |
8798 | return 0; |
8799 | ||
4c52953f AM |
8800 | if (isec->output_section == NULL) |
8801 | return 0; | |
8802 | ||
9b5ecbd0 AM |
8803 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8804 | the function that hit an exception. */ | |
4c52953f AM |
8805 | if (strcmp (isec->name, ".fixup") == 0) |
8806 | return 0; | |
9b5ecbd0 | 8807 | |
4c52953f AM |
8808 | if (isec->reloc_count == 0) |
8809 | return 0; | |
8810 | ||
8811 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8812 | info->keep_memory); | |
8813 | if (relstart == NULL) | |
8814 | return -1; | |
8815 | ||
8816 | /* Look for branches to outside of this section. */ | |
8817 | local_syms = NULL; | |
8818 | ret = 0; | |
8819 | htab = ppc_hash_table (info); | |
8820 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8821 | { |
4c52953f AM |
8822 | enum elf_ppc64_reloc_type r_type; |
8823 | unsigned long r_symndx; | |
8824 | struct elf_link_hash_entry *h; | |
8825 | Elf_Internal_Sym *sym; | |
8826 | asection *sym_sec; | |
8827 | long *opd_adjust; | |
8828 | bfd_vma sym_value; | |
8829 | bfd_vma dest; | |
8830 | ||
8831 | r_type = ELF64_R_TYPE (rel->r_info); | |
8832 | if (r_type != R_PPC64_REL24 | |
8833 | && r_type != R_PPC64_REL14 | |
8834 | && r_type != R_PPC64_REL14_BRTAKEN | |
8835 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8836 | continue; | |
8837 | ||
8838 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8839 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8840 | isec->owner)) | |
9b5ecbd0 | 8841 | { |
4c52953f AM |
8842 | ret = -1; |
8843 | break; | |
9b5ecbd0 | 8844 | } |
9b5ecbd0 | 8845 | |
2917689a AM |
8846 | /* Calls to dynamic lib functions go through a plt call stub |
8847 | that uses r2. Branches to undefined symbols might be a call | |
8848 | using old-style dot symbols that can be satisfied by a plt | |
8849 | call into a new-style dynamic library. */ | |
4c52953f | 8850 | if (sym_sec == NULL) |
2917689a AM |
8851 | { |
8852 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8853 | if (eh != NULL | |
8854 | && eh->oh != NULL | |
8855 | && eh->oh->elf.plt.plist != NULL) | |
8856 | { | |
8857 | ret = 1; | |
8858 | break; | |
8859 | } | |
4c52953f | 8860 | |
2917689a AM |
8861 | /* Ignore other undefined symbols. */ |
8862 | continue; | |
8863 | } | |
8864 | ||
8865 | /* Assume branches to other sections not included in the link need | |
8866 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8867 | if (sym_sec->output_section == NULL) |
8868 | { | |
8869 | ret = 1; | |
8870 | break; | |
8871 | } | |
8872 | ||
8873 | if (h == NULL) | |
8874 | sym_value = sym->st_value; | |
8875 | else | |
8876 | { | |
8877 | if (h->root.type != bfd_link_hash_defined | |
8878 | && h->root.type != bfd_link_hash_defweak) | |
8879 | abort (); | |
8880 | sym_value = h->root.u.def.value; | |
8881 | } | |
8882 | sym_value += rel->r_addend; | |
8883 | ||
8884 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8885 | opd_adjust = get_opd_info (sym_sec); | |
8886 | if (opd_adjust != NULL) | |
8887 | { | |
4c52953f AM |
8888 | if (h == NULL) |
8889 | { | |
8890 | long adjust; | |
8891 | ||
8892 | adjust = opd_adjust[sym->st_value / 8]; | |
8893 | if (adjust == -1) | |
8894 | /* Assume deleted functions won't ever be called. */ | |
8895 | continue; | |
8896 | sym_value += adjust; | |
8897 | } | |
8898 | ||
8899 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8900 | if (dest == (bfd_vma) -1) | |
8901 | continue; | |
8902 | } | |
8903 | else | |
8904 | dest = (sym_value | |
8905 | + sym_sec->output_offset | |
8906 | + sym_sec->output_section->vma); | |
8907 | ||
8908 | /* Ignore branch to self. */ | |
8909 | if (sym_sec == isec) | |
8910 | continue; | |
8911 | ||
8912 | /* If the called function uses the toc, we need a stub. */ | |
8913 | if (sym_sec->has_toc_reloc | |
8914 | || sym_sec->makes_toc_func_call) | |
8915 | { | |
8916 | ret = 1; | |
8917 | break; | |
8918 | } | |
8919 | ||
8920 | /* Assume any branch that needs a long branch stub might in fact | |
8921 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8922 | else if (dest - (isec->output_offset | |
8923 | + isec->output_section->vma | |
8924 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8925 | { |
8926 | ret = 1; | |
8927 | break; | |
8928 | } | |
4c52953f AM |
8929 | |
8930 | /* If calling back to a section in the process of being tested, we | |
8931 | can't say for sure that no toc adjusting stubs are needed, so | |
8932 | don't return zero. */ | |
8933 | else if (sym_sec->call_check_in_progress) | |
8934 | ret = 2; | |
8935 | ||
8936 | /* Branches to another section that itself doesn't have any TOC | |
8937 | references are OK. Recursively call ourselves to check. */ | |
8938 | else if (sym_sec->id <= htab->top_id | |
8939 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8940 | { | |
8941 | int recur; | |
8942 | ||
8943 | /* Mark current section as indeterminate, so that other | |
8944 | sections that call back to current won't be marked as | |
8945 | known. */ | |
8946 | isec->call_check_in_progress = 1; | |
8947 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8948 | isec->call_check_in_progress = 0; | |
8949 | ||
8950 | if (recur < 0) | |
8951 | { | |
8952 | /* An error. Exit. */ | |
8953 | ret = -1; | |
8954 | break; | |
8955 | } | |
8956 | else if (recur <= 1) | |
8957 | { | |
8958 | /* Known result. Mark as checked and set section flag. */ | |
8959 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8960 | if (recur != 0) | |
8961 | { | |
8962 | sym_sec->makes_toc_func_call = 1; | |
8963 | ret = 1; | |
8964 | break; | |
8965 | } | |
8966 | } | |
8967 | else | |
8968 | { | |
8969 | /* Unknown result. Continue checking. */ | |
8970 | ret = 2; | |
8971 | } | |
8972 | } | |
9b5ecbd0 AM |
8973 | } |
8974 | ||
4c52953f AM |
8975 | if (local_syms != NULL |
8976 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8977 | != (unsigned char *) local_syms)) | |
8978 | free (local_syms); | |
8979 | if (elf_section_data (isec)->relocs != relstart) | |
8980 | free (relstart); | |
8981 | ||
9b5ecbd0 AM |
8982 | return ret; |
8983 | } | |
8984 | ||
721956f4 AM |
8985 | /* The linker repeatedly calls this function for each input section, |
8986 | in the order that input sections are linked into output sections. | |
8987 | Build lists of input sections to determine groupings between which | |
8988 | we may insert linker stubs. */ | |
8989 | ||
9b5ecbd0 | 8990 | bfd_boolean |
4ce794b7 | 8991 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8992 | { |
8993 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8994 | ||
734b6cf9 AM |
8995 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8996 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8997 | { |
734b6cf9 | 8998 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8999 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 9000 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
9001 | /* This happens to make the list in reverse order, |
9002 | which is what we want. */ | |
734b6cf9 AM |
9003 | PREV_SEC (isec) = *list; |
9004 | *list = isec; | |
721956f4 | 9005 | } |
ad8e1ba5 | 9006 | |
4c52953f | 9007 | if (htab->multi_toc_needed) |
9b5ecbd0 | 9008 | { |
4c52953f AM |
9009 | /* If a code section has a function that uses the TOC then we need |
9010 | to use the right TOC (obviously). Also, make sure that .opd gets | |
9011 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
9012 | can't find their function symbol (shouldn't ever happen now). */ | |
9013 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
9014 | { | |
9015 | if (elf_gp (isec->owner) != 0) | |
9016 | htab->toc_curr = elf_gp (isec->owner); | |
9017 | } | |
9018 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9019 | { | |
9020 | int ret = toc_adjusting_stub_needed (info, isec); | |
9021 | if (ret < 0) | |
9022 | return FALSE; | |
9023 | else | |
9024 | isec->makes_toc_func_call = ret & 1; | |
9025 | } | |
9b5ecbd0 | 9026 | } |
ad8e1ba5 AM |
9027 | |
9028 | /* Functions that don't use the TOC can belong in any TOC group. | |
9029 | Use the last TOC base. This happens to make _init and _fini | |
9030 | pasting work. */ | |
9031 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9032 | return TRUE; |
721956f4 AM |
9033 | } |
9034 | ||
9035 | /* See whether we can group stub sections together. Grouping stub | |
9036 | sections may result in fewer stubs. More importantly, we need to | |
9037 | put all .init* and .fini* stubs at the beginning of the .init or | |
9038 | .fini output sections respectively, because glibc splits the | |
9039 | _init and _fini functions into multiple parts. Putting a stub in | |
9040 | the middle of a function is not a good idea. */ | |
9041 | ||
9042 | static void | |
4ce794b7 AM |
9043 | group_sections (struct ppc_link_hash_table *htab, |
9044 | bfd_size_type stub_group_size, | |
9045 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9046 | { |
7c8fe5c4 AM |
9047 | asection **list; |
9048 | bfd_size_type stub14_group_size; | |
9049 | bfd_boolean suppress_size_errors; | |
9050 | ||
9051 | suppress_size_errors = FALSE; | |
9052 | stub14_group_size = stub_group_size; | |
9053 | if (stub_group_size == 1) | |
9054 | { | |
9055 | /* Default values. */ | |
9056 | if (stubs_always_before_branch) | |
9057 | { | |
9058 | stub_group_size = 0x1e00000; | |
9059 | stub14_group_size = 0x7800; | |
9060 | } | |
9061 | else | |
9062 | { | |
9063 | stub_group_size = 0x1c00000; | |
9064 | stub14_group_size = 0x7000; | |
9065 | } | |
9066 | suppress_size_errors = TRUE; | |
9067 | } | |
9068 | ||
9069 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9070 | do |
721956f4 | 9071 | { |
734b6cf9 AM |
9072 | asection *tail = *list; |
9073 | while (tail != NULL) | |
721956f4 | 9074 | { |
734b6cf9 AM |
9075 | asection *curr; |
9076 | asection *prev; | |
9077 | bfd_size_type total; | |
9078 | bfd_boolean big_sec; | |
9079 | bfd_vma curr_toc; | |
9080 | ||
9081 | curr = tail; | |
eea6121a | 9082 | total = tail->size; |
7c8fe5c4 AM |
9083 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9084 | ? stub14_group_size : stub_group_size); | |
9085 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9086 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9087 | tail->owner, tail); | |
734b6cf9 AM |
9088 | curr_toc = htab->stub_group[tail->id].toc_off; |
9089 | ||
9090 | while ((prev = PREV_SEC (curr)) != NULL | |
9091 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9092 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9093 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9094 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9095 | curr = prev; |
9096 | ||
9097 | /* OK, the size from the start of CURR to the end is less | |
9098 | than stub_group_size and thus can be handled by one stub | |
9099 | section. (or the tail section is itself larger than | |
9100 | stub_group_size, in which case we may be toast.) We | |
9101 | should really be keeping track of the total size of stubs | |
9102 | added here, as stubs contribute to the final output | |
9103 | section size. That's a little tricky, and this way will | |
9104 | only break if stubs added make the total size more than | |
9105 | 2^25, ie. for the default stub_group_size, if stubs total | |
9106 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9107 | do | |
721956f4 AM |
9108 | { |
9109 | prev = PREV_SEC (tail); | |
734b6cf9 | 9110 | /* Set up this stub group. */ |
721956f4 AM |
9111 | htab->stub_group[tail->id].link_sec = curr; |
9112 | } | |
734b6cf9 AM |
9113 | while (tail != curr && (tail = prev) != NULL); |
9114 | ||
9115 | /* But wait, there's more! Input sections up to stub_group_size | |
9116 | bytes before the stub section can be handled by it too. | |
9117 | Don't do this if we have a really large section after the | |
9118 | stubs, as adding more stubs increases the chance that | |
9119 | branches may not reach into the stub section. */ | |
9120 | if (!stubs_always_before_branch && !big_sec) | |
9121 | { | |
9122 | total = 0; | |
9123 | while (prev != NULL | |
9124 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9125 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9126 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9127 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9128 | { | |
9129 | tail = prev; | |
9130 | prev = PREV_SEC (tail); | |
9131 | htab->stub_group[tail->id].link_sec = curr; | |
9132 | } | |
9133 | } | |
9134 | tail = prev; | |
721956f4 AM |
9135 | } |
9136 | } | |
734b6cf9 AM |
9137 | while (list-- != htab->input_list); |
9138 | free (htab->input_list); | |
721956f4 AM |
9139 | #undef PREV_SEC |
9140 | } | |
9141 | ||
721956f4 AM |
9142 | /* Determine and set the size of the stub section for a final link. |
9143 | ||
9144 | The basic idea here is to examine all the relocations looking for | |
9145 | PC-relative calls to a target that is unreachable with a "bl" | |
9146 | instruction. */ | |
9147 | ||
b34976b6 | 9148 | bfd_boolean |
4ce794b7 | 9149 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9150 | struct bfd_link_info *info, |
9151 | bfd_signed_vma group_size, | |
9152 | asection *(*add_stub_section) (const char *, asection *), | |
9153 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9154 | { |
9155 | bfd_size_type stub_group_size; | |
b34976b6 | 9156 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9157 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9158 | ||
9159 | /* Stash our params away. */ | |
721956f4 AM |
9160 | htab->add_stub_section = add_stub_section; |
9161 | htab->layout_sections_again = layout_sections_again; | |
9162 | stubs_always_before_branch = group_size < 0; | |
9163 | if (group_size < 0) | |
9164 | stub_group_size = -group_size; | |
9165 | else | |
9166 | stub_group_size = group_size; | |
721956f4 AM |
9167 | |
9168 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9169 | ||
721956f4 AM |
9170 | while (1) |
9171 | { | |
9172 | bfd *input_bfd; | |
9173 | unsigned int bfd_indx; | |
9174 | asection *stub_sec; | |
721956f4 AM |
9175 | |
9176 | htab->stub_iteration += 1; | |
721956f4 AM |
9177 | |
9178 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9179 | input_bfd != NULL; | |
9180 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9181 | { | |
9182 | Elf_Internal_Shdr *symtab_hdr; | |
9183 | asection *section; | |
6cdc0ccc | 9184 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9185 | |
67f93c31 AM |
9186 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9187 | continue; | |
9188 | ||
721956f4 AM |
9189 | /* We'll need the symbol table in a second. */ |
9190 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
9191 | if (symtab_hdr->sh_info == 0) | |
9192 | continue; | |
9193 | ||
721956f4 AM |
9194 | /* Walk over each section attached to the input bfd. */ |
9195 | for (section = input_bfd->sections; | |
9196 | section != NULL; | |
9197 | section = section->next) | |
9198 | { | |
721956f4 | 9199 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9200 | |
9201 | /* If there aren't any relocs, then there's nothing more | |
9202 | to do. */ | |
9203 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9204 | || (section->flags & SEC_ALLOC) == 0 |
9205 | || (section->flags & SEC_LOAD) == 0 | |
9206 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9207 | || section->reloc_count == 0) |
9208 | continue; | |
9209 | ||
9210 | /* If this section is a link-once section that will be | |
9211 | discarded, then don't create any stubs. */ | |
9212 | if (section->output_section == NULL | |
9213 | || section->output_section->owner != output_bfd) | |
9214 | continue; | |
9215 | ||
1e2f5b6e AM |
9216 | /* Get the relocs. */ |
9217 | internal_relocs | |
4ce794b7 | 9218 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9219 | info->keep_memory); |
721956f4 | 9220 | if (internal_relocs == NULL) |
1e2f5b6e | 9221 | goto error_ret_free_local; |
721956f4 AM |
9222 | |
9223 | /* Now examine each relocation. */ | |
9224 | irela = internal_relocs; | |
9225 | irelaend = irela + section->reloc_count; | |
9226 | for (; irela < irelaend; irela++) | |
9227 | { | |
4ce794b7 AM |
9228 | enum elf_ppc64_reloc_type r_type; |
9229 | unsigned int r_indx; | |
721956f4 AM |
9230 | enum ppc_stub_type stub_type; |
9231 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9232 | asection *sym_sec, *code_sec; |
721956f4 AM |
9233 | bfd_vma sym_value; |
9234 | bfd_vma destination; | |
8843416a | 9235 | bfd_boolean ok_dest; |
721956f4 | 9236 | struct ppc_link_hash_entry *hash; |
8387904d | 9237 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9238 | struct elf_link_hash_entry *h; |
9239 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9240 | char *stub_name; |
9241 | const asection *id_sec; | |
8387904d | 9242 | long *opd_adjust; |
721956f4 AM |
9243 | |
9244 | r_type = ELF64_R_TYPE (irela->r_info); | |
9245 | r_indx = ELF64_R_SYM (irela->r_info); | |
9246 | ||
4ce794b7 | 9247 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9248 | { |
9249 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9250 | goto error_ret_free_internal; |
721956f4 AM |
9251 | } |
9252 | ||
9253 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9254 | if (r_type != R_PPC64_REL24 |
9255 | && r_type != R_PPC64_REL14 | |
9256 | && r_type != R_PPC64_REL14_BRTAKEN | |
9257 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9258 | continue; |
9259 | ||
9260 | /* Now determine the call target, its name, value, | |
9261 | section. */ | |
411e1bfb AM |
9262 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9263 | r_indx, input_bfd)) | |
9264 | goto error_ret_free_internal; | |
9265 | hash = (struct ppc_link_hash_entry *) h; | |
9266 | ||
8843416a | 9267 | ok_dest = FALSE; |
8387904d | 9268 | fdh = NULL; |
7fe2b9a6 | 9269 | sym_value = 0; |
411e1bfb | 9270 | if (hash == NULL) |
721956f4 | 9271 | { |
411e1bfb | 9272 | sym_value = sym->st_value; |
8843416a | 9273 | ok_dest = TRUE; |
721956f4 | 9274 | } |
7fe2b9a6 AM |
9275 | else if (hash->elf.root.type == bfd_link_hash_defined |
9276 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9277 | { | |
9278 | sym_value = hash->elf.root.u.def.value; | |
9279 | if (sym_sec->output_section != NULL) | |
9280 | ok_dest = TRUE; | |
9281 | } | |
9282 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9283 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9284 | { |
99877b66 | 9285 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9286 | use the func descriptor sym instead if it is |
9287 | defined. */ | |
ceb1f1ef | 9288 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9289 | && (fdh = get_fdh (hash, htab)) != NULL) |
9290 | { | |
8387904d AM |
9291 | if (fdh->elf.root.type == bfd_link_hash_defined |
9292 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9293 | { | |
9294 | sym_sec = fdh->elf.root.u.def.section; | |
9295 | sym_value = fdh->elf.root.u.def.value; | |
9296 | if (sym_sec->output_section != NULL) | |
9297 | ok_dest = TRUE; | |
9298 | } | |
99877b66 AM |
9299 | else |
9300 | fdh = NULL; | |
8387904d | 9301 | } |
7fe2b9a6 AM |
9302 | } |
9303 | else | |
9304 | { | |
9305 | bfd_set_error (bfd_error_bad_value); | |
9306 | goto error_ret_free_internal; | |
721956f4 AM |
9307 | } |
9308 | ||
8843416a AM |
9309 | destination = 0; |
9310 | if (ok_dest) | |
9311 | { | |
9312 | sym_value += irela->r_addend; | |
9313 | destination = (sym_value | |
9314 | + sym_sec->output_offset | |
9315 | + sym_sec->output_section->vma); | |
9316 | } | |
9317 | ||
8387904d AM |
9318 | code_sec = sym_sec; |
9319 | opd_adjust = get_opd_info (sym_sec); | |
9320 | if (opd_adjust != NULL) | |
9321 | { | |
9322 | bfd_vma dest; | |
9323 | ||
9324 | if (hash == NULL) | |
9325 | { | |
3f764659 | 9326 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9327 | if (adjust == -1) |
9328 | continue; | |
9329 | sym_value += adjust; | |
9330 | } | |
9331 | dest = opd_entry_value (sym_sec, sym_value, | |
9332 | &code_sec, &sym_value); | |
9333 | if (dest != (bfd_vma) -1) | |
9334 | { | |
9335 | destination = dest; | |
9336 | if (fdh != NULL) | |
9337 | { | |
9338 | /* Fixup old ABI sym to point at code | |
9339 | entry. */ | |
99877b66 | 9340 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9341 | hash->elf.root.u.def.section = code_sec; |
9342 | hash->elf.root.u.def.value = sym_value; | |
9343 | } | |
9344 | } | |
9345 | } | |
9346 | ||
721956f4 AM |
9347 | /* Determine what (if any) linker stub is needed. */ |
9348 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9349 | destination); | |
ad8e1ba5 AM |
9350 | |
9351 | if (stub_type != ppc_stub_plt_call) | |
9352 | { | |
9353 | /* Check whether we need a TOC adjusting stub. | |
9354 | Since the linker pastes together pieces from | |
9355 | different object files when creating the | |
9356 | _init and _fini functions, it may be that a | |
9357 | call to what looks like a local sym is in | |
9358 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9359 | if (code_sec != NULL |
9360 | && code_sec->output_section != NULL | |
9361 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9362 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9363 | && (code_sec->has_toc_reloc |
9364 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9365 | stub_type = ppc_stub_long_branch_r2off; |
9366 | } | |
9367 | ||
721956f4 AM |
9368 | if (stub_type == ppc_stub_none) |
9369 | continue; | |
9370 | ||
411e1bfb AM |
9371 | /* __tls_get_addr calls might be eliminated. */ |
9372 | if (stub_type != ppc_stub_plt_call | |
9373 | && hash != NULL | |
8387904d AM |
9374 | && (hash == htab->tls_get_addr |
9375 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9376 | && section->has_tls_reloc |
9377 | && irela != internal_relocs) | |
9378 | { | |
9379 | /* Get tls info. */ | |
e7b938ca | 9380 | char *tls_mask; |
411e1bfb | 9381 | |
0d4792f7 | 9382 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9383 | irela - 1, input_bfd)) |
9384 | goto error_ret_free_internal; | |
e7b938ca | 9385 | if (*tls_mask != 0) |
411e1bfb AM |
9386 | continue; |
9387 | } | |
9388 | ||
721956f4 AM |
9389 | /* Support for grouping stub sections. */ |
9390 | id_sec = htab->stub_group[section->id].link_sec; | |
9391 | ||
9392 | /* Get the name of this stub. */ | |
9393 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9394 | if (!stub_name) | |
9395 | goto error_ret_free_internal; | |
9396 | ||
9397 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9398 | stub_name, FALSE, FALSE); |
721956f4 AM |
9399 | if (stub_entry != NULL) |
9400 | { | |
9401 | /* The proper stub has already been created. */ | |
9402 | free (stub_name); | |
9403 | continue; | |
9404 | } | |
9405 | ||
9406 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9407 | if (stub_entry == NULL) | |
9408 | { | |
9409 | free (stub_name); | |
6cdc0ccc AM |
9410 | error_ret_free_internal: |
9411 | if (elf_section_data (section)->relocs == NULL) | |
9412 | free (internal_relocs); | |
9413 | error_ret_free_local: | |
9414 | if (local_syms != NULL | |
9415 | && (symtab_hdr->contents | |
9416 | != (unsigned char *) local_syms)) | |
9417 | free (local_syms); | |
b34976b6 | 9418 | return FALSE; |
721956f4 AM |
9419 | } |
9420 | ||
ad8e1ba5 | 9421 | stub_entry->stub_type = stub_type; |
721956f4 | 9422 | stub_entry->target_value = sym_value; |
8387904d | 9423 | stub_entry->target_section = code_sec; |
721956f4 | 9424 | stub_entry->h = hash; |
411e1bfb | 9425 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9426 | |
9427 | if (stub_entry->h != NULL) | |
9428 | htab->stub_globals += 1; | |
721956f4 AM |
9429 | } |
9430 | ||
9431 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9432 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9433 | free (internal_relocs); |
721956f4 | 9434 | } |
6cdc0ccc AM |
9435 | |
9436 | if (local_syms != NULL | |
9437 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9438 | { | |
9439 | if (!info->keep_memory) | |
9440 | free (local_syms); | |
9441 | else | |
9442 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9443 | } | |
721956f4 AM |
9444 | } |
9445 | ||
5c3dead3 | 9446 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9447 | stub sections. */ |
9448 | for (stub_sec = htab->stub_bfd->sections; | |
9449 | stub_sec != NULL; | |
9450 | stub_sec = stub_sec->next) | |
e717da7e | 9451 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9452 | { |
5c3dead3 | 9453 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9454 | stub_sec->size = 0; |
9455 | stub_sec->reloc_count = 0; | |
84f5d08e | 9456 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 9457 | } |
eea6121a AM |
9458 | |
9459 | htab->brlt->size = 0; | |
84f5d08e AM |
9460 | htab->brlt->reloc_count = 0; |
9461 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 9462 | if (htab->relbrlt != NULL) |
eea6121a | 9463 | htab->relbrlt->size = 0; |
721956f4 | 9464 | |
63bc6f6c | 9465 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9466 | |
5c3dead3 AM |
9467 | for (stub_sec = htab->stub_bfd->sections; |
9468 | stub_sec != NULL; | |
9469 | stub_sec = stub_sec->next) | |
9470 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9471 | && stub_sec->rawsize != stub_sec->size) | |
9472 | break; | |
9473 | ||
9474 | /* Exit from this loop when no stubs have been added, and no stubs | |
9475 | have changed size. */ | |
9476 | if (stub_sec == NULL) | |
9477 | break; | |
9478 | ||
721956f4 AM |
9479 | /* Ask the linker to do its stuff. */ |
9480 | (*htab->layout_sections_again) (); | |
9481 | } | |
9482 | ||
c456f082 | 9483 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9484 | section is empty, but it's too late. If we strip sections here, |
9485 | the dynamic symbol table is corrupted since the section symbol | |
9486 | for the stripped section isn't written. */ | |
721956f4 | 9487 | |
b34976b6 | 9488 | return TRUE; |
721956f4 AM |
9489 | } |
9490 | ||
9491 | /* Called after we have determined section placement. If sections | |
805fc799 | 9492 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9493 | |
805fc799 | 9494 | bfd_vma |
4ce794b7 | 9495 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9496 | { |
805fc799 AM |
9497 | asection *s; |
9498 | bfd_vma TOCstart; | |
721956f4 | 9499 | |
805fc799 AM |
9500 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9501 | order. The TOC starts where the first of these sections starts. */ | |
9502 | s = bfd_get_section_by_name (obfd, ".got"); | |
9503 | if (s == NULL) | |
9504 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9505 | if (s == NULL) | |
9506 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9507 | if (s == NULL) | |
9508 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9509 | if (s == NULL) | |
9510 | { | |
9511 | /* This may happen for | |
9512 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9513 | .toc directive | |
9514 | o bad linker script | |
9515 | o --gc-sections and empty TOC sections | |
9516 | ||
9517 | FIXME: Warn user? */ | |
9518 | ||
9519 | /* Look for a likely section. We probably won't even be | |
9520 | using TOCstart. */ | |
9521 | for (s = obfd->sections; s != NULL; s = s->next) | |
9522 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9523 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9524 | break; | |
721956f4 | 9525 | if (s == NULL) |
805fc799 AM |
9526 | for (s = obfd->sections; s != NULL; s = s->next) |
9527 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9528 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9529 | break; | |
721956f4 | 9530 | if (s == NULL) |
805fc799 AM |
9531 | for (s = obfd->sections; s != NULL; s = s->next) |
9532 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9533 | break; | |
721956f4 | 9534 | if (s == NULL) |
805fc799 AM |
9535 | for (s = obfd->sections; s != NULL; s = s->next) |
9536 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9537 | break; | |
9538 | } | |
721956f4 | 9539 | |
805fc799 AM |
9540 | TOCstart = 0; |
9541 | if (s != NULL) | |
9542 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9543 | |
805fc799 | 9544 | return TOCstart; |
721956f4 AM |
9545 | } |
9546 | ||
9547 | /* Build all the stubs associated with the current output file. | |
9548 | The stubs are kept in a hash table attached to the main linker | |
9549 | hash table. This function is called via gldelf64ppc_finish. */ | |
9550 | ||
b34976b6 | 9551 | bfd_boolean |
4ce794b7 AM |
9552 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9553 | struct bfd_link_info *info, | |
9554 | char **stats) | |
5d1634d7 AM |
9555 | { |
9556 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9557 | asection *stub_sec; |
5d1634d7 | 9558 | bfd_byte *p; |
e717da7e | 9559 | int stub_sec_count = 0; |
5d1634d7 | 9560 | |
ad8e1ba5 | 9561 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9562 | |
9563 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9564 | for (stub_sec = htab->stub_bfd->sections; |
9565 | stub_sec != NULL; | |
9566 | stub_sec = stub_sec->next) | |
eea6121a AM |
9567 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9568 | && stub_sec->size != 0) | |
e717da7e | 9569 | { |
eea6121a AM |
9570 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9571 | if (stub_sec->contents == NULL) | |
9572 | return FALSE; | |
9573 | /* We want to check that built size is the same as calculated | |
9574 | size. rawsize is a convenient location to use. */ | |
9575 | stub_sec->rawsize = stub_sec->size; | |
9576 | stub_sec->size = 0; | |
e717da7e | 9577 | } |
5d1634d7 | 9578 | |
23eb7e01 | 9579 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9580 | { |
9f951329 | 9581 | unsigned int indx; |
ad8e1ba5 | 9582 | bfd_vma plt0; |
9f951329 | 9583 | |
721956f4 | 9584 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9585 | if (htab->emit_stub_syms) |
9586 | { | |
9587 | struct elf_link_hash_entry *h; | |
9588 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9589 | if (h == NULL) | |
9590 | return FALSE; | |
9591 | if (h->root.type == bfd_link_hash_new) | |
9592 | { | |
9593 | h->root.type = bfd_link_hash_defined; | |
9594 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9595 | h->root.u.def.value = 8; |
f5385ebf AM |
9596 | h->ref_regular = 1; |
9597 | h->def_regular = 1; | |
9598 | h->ref_regular_nonweak = 1; | |
9599 | h->forced_local = 1; | |
9600 | h->non_elf = 0; | |
97b639ba AM |
9601 | } |
9602 | } | |
4ce794b7 | 9603 | p = htab->glink->contents; |
ee4bf8d2 AM |
9604 | plt0 = (htab->plt->output_section->vma |
9605 | + htab->plt->output_offset | |
9606 | - (htab->glink->output_section->vma | |
9607 | + htab->glink->output_offset | |
9608 | + 16)); | |
9609 | bfd_put_64 (htab->glink->owner, plt0, p); | |
9610 | p += 8; | |
9611 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 9612 | p += 4; |
ee4bf8d2 | 9613 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 9614 | p += 4; |
ee4bf8d2 | 9615 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 9616 | p += 4; |
ee4bf8d2 | 9617 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 9618 | p += 4; |
ee4bf8d2 | 9619 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 9620 | p += 4; |
ee4bf8d2 | 9621 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 9622 | p += 4; |
ee4bf8d2 | 9623 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 9624 | p += 4; |
4ce794b7 | 9625 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9626 | p += 4; |
4ce794b7 | 9627 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9628 | p += 4; |
4ce794b7 | 9629 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9630 | p += 4; |
4ce794b7 | 9631 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 9632 | p += 4; |
ee4bf8d2 AM |
9633 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
9634 | { | |
9635 | bfd_put_32 (htab->glink->owner, NOP, p); | |
9636 | p += 4; | |
9637 | } | |
ad8e1ba5 | 9638 | |
9f951329 AM |
9639 | /* Build the .glink lazy link call stubs. */ |
9640 | indx = 0; | |
eea6121a | 9641 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9642 | { |
9643 | if (indx < 0x8000) | |
9644 | { | |
4ce794b7 | 9645 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9646 | p += 4; |
9647 | } | |
9648 | else | |
9649 | { | |
4ce794b7 | 9650 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9651 | p += 4; |
4ce794b7 | 9652 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9653 | p += 4; |
9654 | } | |
4ce794b7 | 9655 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 9656 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 9657 | indx++; |
9f951329 AM |
9658 | p += 4; |
9659 | } | |
eea6121a | 9660 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9661 | } |
5d1634d7 | 9662 | |
eea6121a | 9663 | if (htab->brlt->size != 0) |
721956f4 | 9664 | { |
4ce794b7 | 9665 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9666 | htab->brlt->size); |
4ce794b7 | 9667 | if (htab->brlt->contents == NULL) |
b34976b6 | 9668 | return FALSE; |
721956f4 | 9669 | } |
ee75fd95 | 9670 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9671 | { |
9672 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9673 | htab->relbrlt->size); |
63bc6f6c AM |
9674 | if (htab->relbrlt->contents == NULL) |
9675 | return FALSE; | |
9676 | } | |
5d1634d7 | 9677 | |
721956f4 AM |
9678 | /* Build the stubs as directed by the stub hash table. */ |
9679 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9680 | |
aa8a7074 AM |
9681 | if (htab->relbrlt != NULL) |
9682 | htab->relbrlt->reloc_count = 0; | |
9683 | ||
721956f4 AM |
9684 | for (stub_sec = htab->stub_bfd->sections; |
9685 | stub_sec != NULL; | |
9686 | stub_sec = stub_sec->next) | |
e717da7e AM |
9687 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9688 | { | |
9689 | stub_sec_count += 1; | |
eea6121a | 9690 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9691 | break; |
9692 | } | |
5d1634d7 | 9693 | |
721956f4 | 9694 | if (stub_sec != NULL |
eea6121a | 9695 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9696 | { |
b34976b6 | 9697 | htab->stub_error = TRUE; |
721956f4 | 9698 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9699 | } |
721956f4 | 9700 | |
d2a300cf AM |
9701 | if (htab->stub_error) |
9702 | return FALSE; | |
9703 | ||
9704 | if (stats != NULL) | |
9705 | { | |
9706 | *stats = bfd_malloc (500); | |
9707 | if (*stats == NULL) | |
9708 | return FALSE; | |
9709 | ||
ee75fd95 | 9710 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9711 | " branch %lu\n" |
9712 | " toc adjust %lu\n" | |
9713 | " long branch %lu\n" | |
9714 | " long toc adj %lu\n" | |
9715 | " plt call %lu"), | |
e717da7e | 9716 | stub_sec_count, |
ee75fd95 | 9717 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9718 | htab->stub_count[ppc_stub_long_branch - 1], |
9719 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9720 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9721 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9722 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9723 | } |
9724 | return TRUE; | |
5bd4f169 AM |
9725 | } |
9726 | ||
99877b66 AM |
9727 | /* This function undoes the changes made by add_symbol_adjust. */ |
9728 | ||
9729 | static bfd_boolean | |
9730 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9731 | { | |
9732 | struct ppc_link_hash_entry *eh; | |
9733 | ||
9734 | if (h->root.type == bfd_link_hash_indirect) | |
9735 | return TRUE; | |
9736 | ||
9737 | if (h->root.type == bfd_link_hash_warning) | |
9738 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9739 | ||
9740 | eh = (struct ppc_link_hash_entry *) h; | |
9741 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9742 | return TRUE; | |
9743 | ||
9744 | eh->elf.root.type = bfd_link_hash_undefined; | |
9745 | return TRUE; | |
9746 | } | |
9747 | ||
9748 | void | |
9749 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9750 | { | |
9751 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9752 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9753 | } | |
9754 | ||
60124e18 AM |
9755 | /* What to do when ld finds relocations against symbols defined in |
9756 | discarded sections. */ | |
9757 | ||
9758 | static unsigned int | |
9759 | ppc64_elf_action_discarded (asection *sec) | |
9760 | { | |
9761 | if (strcmp (".opd", sec->name) == 0) | |
9762 | return 0; | |
9763 | ||
9764 | if (strcmp (".toc", sec->name) == 0) | |
9765 | return 0; | |
9766 | ||
bce50a28 JJ |
9767 | if (strcmp (".toc1", sec->name) == 0) |
9768 | return 0; | |
9769 | ||
60124e18 AM |
9770 | return _bfd_elf_default_action_discarded (sec); |
9771 | } | |
9772 | ||
5bd4f169 AM |
9773 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9774 | to handle the relocations for a section. | |
9775 | ||
9776 | The relocs are always passed as Rela structures; if the section | |
9777 | actually uses Rel structures, the r_addend field will always be | |
9778 | zero. | |
9779 | ||
9780 | This function is responsible for adjust the section contents as | |
9781 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9782 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9783 | necessary. |
9784 | ||
9785 | This function does not have to worry about setting the reloc | |
9786 | address or the reloc symbol index. | |
9787 | ||
9788 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9789 | ||
9790 | LOCAL_SECTIONS is an array giving the section in the input file | |
9791 | corresponding to the st_shndx field of each local symbol. | |
9792 | ||
9793 | The global hash table entry for the global symbols can be found | |
9794 | via elf_sym_hashes (input_bfd). | |
9795 | ||
1049f94e | 9796 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9797 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9798 | going to be the section symbol corresponding to the output | |
9799 | section, which means that the addend must be adjusted | |
9800 | accordingly. */ | |
9801 | ||
b34976b6 | 9802 | static bfd_boolean |
4ce794b7 AM |
9803 | ppc64_elf_relocate_section (bfd *output_bfd, |
9804 | struct bfd_link_info *info, | |
9805 | bfd *input_bfd, | |
9806 | asection *input_section, | |
9807 | bfd_byte *contents, | |
9808 | Elf_Internal_Rela *relocs, | |
9809 | Elf_Internal_Sym *local_syms, | |
9810 | asection **local_sections) | |
5bd4f169 | 9811 | { |
65f38f15 | 9812 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9813 | Elf_Internal_Shdr *symtab_hdr; |
9814 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9815 | Elf_Internal_Rela *rel; |
9816 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9817 | Elf_Internal_Rela outrel; |
9818 | bfd_byte *loc; | |
411e1bfb | 9819 | struct got_entry **local_got_ents; |
5bd4f169 | 9820 | bfd_vma TOCstart; |
b34976b6 AM |
9821 | bfd_boolean ret = TRUE; |
9822 | bfd_boolean is_opd; | |
96e0dda4 | 9823 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9824 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 9825 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 9826 | |
65f38f15 | 9827 | /* Initialize howto table if needed. */ |
5bd4f169 | 9828 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9829 | ppc_howto_init (); |
9830 | ||
65f38f15 | 9831 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9832 | |
9833 | /* Don't relocate stub sections. */ | |
9834 | if (input_section->owner == htab->stub_bfd) | |
9835 | return TRUE; | |
9836 | ||
411e1bfb | 9837 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9838 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9839 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9840 | sym_hashes = elf_sym_hashes (input_bfd); | |
7c8fe5c4 | 9841 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 9842 | |
5bd4f169 AM |
9843 | rel = relocs; |
9844 | relend = relocs + input_section->reloc_count; | |
9845 | for (; rel < relend; rel++) | |
9846 | { | |
04c9666a | 9847 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9848 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9849 | bfd_reloc_status_type r; |
9850 | Elf_Internal_Sym *sym; | |
9851 | asection *sec; | |
039b3fef AM |
9852 | struct elf_link_hash_entry *h_elf; |
9853 | struct ppc_link_hash_entry *h; | |
9854 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9855 | const char *sym_name; |
0d4792f7 | 9856 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9857 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9858 | char sym_type; |
5bd4f169 | 9859 | bfd_vma relocation; |
b34976b6 AM |
9860 | bfd_boolean unresolved_reloc; |
9861 | bfd_boolean warned; | |
50bc7936 | 9862 | unsigned long insn, mask; |
721956f4 AM |
9863 | struct ppc_stub_hash_entry *stub_entry; |
9864 | bfd_vma max_br_offset; | |
9865 | bfd_vma from; | |
5bd4f169 | 9866 | |
4ce794b7 | 9867 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9868 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9869 | |
9870 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9871 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9872 | proper TOC base to use. */ | |
9873 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9874 | && rel != relocs | |
9875 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9876 | && is_opd) | |
9877 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9878 | ||
4ce794b7 AM |
9879 | sym = NULL; |
9880 | sec = NULL; | |
039b3fef | 9881 | h_elf = NULL; |
4ce794b7 | 9882 | sym_name = NULL; |
b34976b6 AM |
9883 | unresolved_reloc = FALSE; |
9884 | warned = FALSE; | |
4cc603a5 | 9885 | orig_addend = rel->r_addend; |
65f38f15 | 9886 | |
0b13192e | 9887 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9888 | { |
9889 | /* It's a local symbol. */ | |
4025353c AM |
9890 | long *opd_adjust; |
9891 | ||
5bd4f169 AM |
9892 | sym = local_syms + r_symndx; |
9893 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9894 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9895 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9896 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9897 | opd_adjust = get_opd_info (sec); |
9898 | if (opd_adjust != NULL) | |
1e2f5b6e | 9899 | { |
3f764659 | 9900 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9901 | if (adjust == -1) |
9902 | relocation = 0; | |
9903 | else | |
4cc603a5 AM |
9904 | { |
9905 | /* If this is a relocation against the opd section sym | |
9906 | and we have edited .opd, adjust the reloc addend so | |
9907 | that ld -r and ld --emit-relocs output is correct. | |
9908 | If it is a reloc against some other .opd symbol, | |
9909 | then the symbol value will be adjusted later. */ | |
9910 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9911 | rel->r_addend += adjust; | |
9912 | else | |
9913 | relocation += adjust; | |
9914 | } | |
1e2f5b6e | 9915 | } |
5bd4f169 AM |
9916 | } |
9917 | else | |
9918 | { | |
b2a8e766 AM |
9919 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9920 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9921 | h_elf, sec, relocation, |
b2a8e766 | 9922 | unresolved_reloc, warned); |
039b3fef AM |
9923 | sym_name = h_elf->root.root.string; |
9924 | sym_type = h_elf->type; | |
5bd4f169 | 9925 | } |
039b3fef | 9926 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9927 | |
ab96bf03 AM |
9928 | if (sec != NULL && elf_discarded_section (sec)) |
9929 | { | |
9930 | /* For relocs against symbols from removed linkonce sections, | |
9931 | or sections discarded by a linker script, we just want the | |
9932 | section contents zeroed. Avoid any special processing. */ | |
9933 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
9934 | contents + rel->r_offset); | |
9935 | rel->r_info = 0; | |
9936 | rel->r_addend = 0; | |
9937 | continue; | |
9938 | } | |
9939 | ||
9940 | if (info->relocatable) | |
9941 | continue; | |
9942 | ||
951fd09b AM |
9943 | /* TLS optimizations. Replace instruction sequences and relocs |
9944 | based on information we collected in tls_optimize. We edit | |
9945 | RELOCS so that --emit-relocs will output something sensible | |
9946 | for the final instruction stream. */ | |
9947 | tls_mask = 0; | |
9948 | tls_gd = 0; | |
0d4792f7 | 9949 | toc_symndx = 0; |
d881513a | 9950 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9951 | { |
9952 | if (h != NULL) | |
039b3fef | 9953 | tls_mask = h->tls_mask; |
411e1bfb AM |
9954 | else if (local_got_ents != NULL) |
9955 | { | |
e7b938ca AM |
9956 | char *lgot_masks; |
9957 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9958 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9959 | } |
0d4792f7 AM |
9960 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9961 | { | |
9962 | /* Check for toc tls entries. */ | |
9963 | char *toc_tls; | |
9964 | ||
9965 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9966 | rel, input_bfd)) | |
9967 | return FALSE; | |
9968 | ||
9969 | if (toc_tls) | |
9970 | tls_mask = *toc_tls; | |
9971 | } | |
9972 | } | |
9973 | ||
9974 | /* Check that tls relocs are used with tls syms, and non-tls | |
9975 | relocs are used with non-tls syms. */ | |
9976 | if (r_symndx != 0 | |
9977 | && r_type != R_PPC64_NONE | |
9978 | && (h == NULL | |
039b3fef AM |
9979 | || h->elf.root.type == bfd_link_hash_defined |
9980 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9981 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9982 | { | |
9983 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9984 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9985 | ; | |
9986 | else | |
9987 | (*_bfd_error_handler) | |
9988 | (sym_type == STT_TLS | |
d003868e AM |
9989 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9990 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9991 | input_bfd, | |
9992 | input_section, | |
0d4792f7 AM |
9993 | (long) rel->r_offset, |
9994 | ppc64_elf_howto_table[r_type]->name, | |
9995 | sym_name); | |
411e1bfb AM |
9996 | } |
9997 | ||
9998 | /* Ensure reloc mapping code below stays sane. */ | |
9999 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
10000 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
10001 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
10002 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
10003 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
10004 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
10005 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
10006 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
10007 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
10008 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
10009 | abort (); | |
0d4792f7 | 10010 | |
411e1bfb AM |
10011 | switch (r_type) |
10012 | { | |
10013 | default: | |
411e1bfb AM |
10014 | break; |
10015 | ||
10016 | case R_PPC64_TOC16: | |
10017 | case R_PPC64_TOC16_LO: | |
10018 | case R_PPC64_TOC16_DS: | |
10019 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10020 | { |
10021 | /* Check for toc tls entries. */ | |
10022 | char *toc_tls; | |
951fd09b | 10023 | int retval; |
411e1bfb | 10024 | |
0d4792f7 AM |
10025 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
10026 | rel, input_bfd); | |
951fd09b | 10027 | if (retval == 0) |
411e1bfb AM |
10028 | return FALSE; |
10029 | ||
10030 | if (toc_tls) | |
10031 | { | |
951fd09b | 10032 | tls_mask = *toc_tls; |
411e1bfb AM |
10033 | if (r_type == R_PPC64_TOC16_DS |
10034 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10035 | { |
10036 | if (tls_mask != 0 | |
10037 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10038 | goto toctprel; | |
10039 | } | |
411e1bfb | 10040 | else |
951fd09b AM |
10041 | { |
10042 | /* If we found a GD reloc pair, then we might be | |
10043 | doing a GD->IE transition. */ | |
10044 | if (retval == 2) | |
10045 | { | |
10046 | tls_gd = TLS_TPRELGD; | |
10047 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10048 | goto tls_get_addr_check; | |
10049 | } | |
10050 | else if (retval == 3) | |
10051 | { | |
10052 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10053 | goto tls_get_addr_check; | |
10054 | } | |
10055 | } | |
411e1bfb AM |
10056 | } |
10057 | } | |
10058 | break; | |
10059 | ||
10060 | case R_PPC64_GOT_TPREL16_DS: | |
10061 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10062 | if (tls_mask != 0 |
10063 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10064 | { |
81407a69 | 10065 | toctprel: |
4fe5ca5b | 10066 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10067 | insn &= 31 << 21; |
10068 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10069 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10070 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10071 | if (toc_symndx != 0) |
10072 | { | |
10073 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10074 | /* We changed the symbol. Start over in order to | |
10075 | get h, sym, sec etc. right. */ | |
10076 | rel--; | |
10077 | continue; | |
10078 | } | |
10079 | else | |
10080 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10081 | } |
10082 | break; | |
10083 | ||
10084 | case R_PPC64_TLS: | |
951fd09b AM |
10085 | if (tls_mask != 0 |
10086 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10087 | { |
50bc7936 | 10088 | bfd_vma rtra; |
411e1bfb | 10089 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10090 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10091 | == ((31 << 26) | (13 << 11))) |
10092 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10093 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10094 | == ((31 << 26) | (13 << 16))) |
10095 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10096 | else | |
10097 | abort (); | |
10098 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10099 | /* add -> addi. */ | |
10100 | insn = 14 << 26; | |
10101 | else if ((insn & (31 << 1)) == 23 << 1 | |
10102 | && ((insn & (31 << 6)) < 14 << 6 | |
10103 | || ((insn & (31 << 6)) >= 16 << 6 | |
10104 | && (insn & (31 << 6)) < 24 << 6))) | |
10105 | /* load and store indexed -> dform. */ | |
10106 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10107 | else if ((insn & (31 << 1)) == 21 << 1 | |
10108 | && (insn & (0x1a << 6)) == 0) | |
10109 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10110 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10111 | | ((insn >> 6) & 1)); | |
10112 | else if ((insn & (31 << 1)) == 21 << 1 | |
10113 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10114 | /* lwax -> lwa. */ | |
10115 | insn = (58 << 26) | 2; | |
10116 | else | |
10117 | abort (); | |
10118 | insn |= rtra; | |
10119 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10120 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10121 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10122 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10123 | r_type = R_PPC64_TPREL16_LO; |
10124 | if (toc_symndx != 0) | |
10125 | { | |
10126 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10127 | /* We changed the symbol. Start over in order to | |
10128 | get h, sym, sec etc. right. */ | |
10129 | rel--; | |
10130 | continue; | |
10131 | } | |
10132 | else | |
10133 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10134 | } |
10135 | break; | |
10136 | ||
411e1bfb AM |
10137 | case R_PPC64_GOT_TLSGD16_HI: |
10138 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10139 | tls_gd = TLS_TPRELGD; |
10140 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10141 | goto tls_gdld_hi; | |
10142 | break; | |
10143 | ||
411e1bfb AM |
10144 | case R_PPC64_GOT_TLSLD16_HI: |
10145 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10146 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10147 | { |
951fd09b AM |
10148 | tls_gdld_hi: |
10149 | if ((tls_mask & tls_gd) != 0) | |
10150 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10151 | + R_PPC64_GOT_TPREL16_DS); | |
10152 | else | |
411e1bfb | 10153 | { |
951fd09b | 10154 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10155 | rel->r_offset -= d_offset; |
951fd09b | 10156 | r_type = R_PPC64_NONE; |
411e1bfb | 10157 | } |
951fd09b | 10158 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10159 | } |
10160 | break; | |
10161 | ||
951fd09b AM |
10162 | case R_PPC64_GOT_TLSGD16: |
10163 | case R_PPC64_GOT_TLSGD16_LO: | |
10164 | tls_gd = TLS_TPRELGD; | |
10165 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10166 | goto tls_get_addr_check; | |
10167 | break; | |
411e1bfb | 10168 | |
951fd09b AM |
10169 | case R_PPC64_GOT_TLSLD16: |
10170 | case R_PPC64_GOT_TLSLD16_LO: | |
10171 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10172 | { | |
10173 | tls_get_addr_check: | |
10174 | if (rel + 1 < relend) | |
411e1bfb | 10175 | { |
951fd09b AM |
10176 | enum elf_ppc64_reloc_type r_type2; |
10177 | unsigned long r_symndx2; | |
10178 | struct elf_link_hash_entry *h2; | |
10179 | bfd_vma insn1, insn2, insn3; | |
10180 | bfd_vma offset; | |
10181 | ||
10182 | /* The next instruction should be a call to | |
10183 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 10184 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
10185 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
10186 | if (r_symndx2 < symtab_hdr->sh_info | |
10187 | || (r_type2 != R_PPC64_REL14 | |
10188 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
10189 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
10190 | && r_type2 != R_PPC64_REL24)) | |
10191 | break; | |
10192 | ||
10193 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
10194 | while (h2->root.type == bfd_link_hash_indirect | |
10195 | || h2->root.type == bfd_link_hash_warning) | |
10196 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
10197 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
10198 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
10199 | break; |
10200 | ||
10201 | /* OK, it checks out. Replace the call. */ | |
10202 | offset = rel[1].r_offset; | |
10203 | insn1 = bfd_get_32 (output_bfd, | |
4fe5ca5b | 10204 | contents + rel->r_offset - d_offset); |
951fd09b AM |
10205 | insn3 = bfd_get_32 (output_bfd, |
10206 | contents + offset + 4); | |
10207 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10208 | { |
951fd09b AM |
10209 | /* IE */ |
10210 | insn1 &= (1 << 26) - (1 << 2); | |
10211 | insn1 |= 58 << 26; /* ld */ | |
10212 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10213 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
10214 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10215 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10216 | + R_PPC64_GOT_TPREL16_DS); | |
10217 | else | |
10218 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
10219 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10220 | } |
10221 | else | |
951fd09b AM |
10222 | { |
10223 | /* LE */ | |
10224 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10225 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10226 | if (tls_gd == 0) | |
10227 | { | |
10228 | /* Was an LD reloc. */ | |
10229 | r_symndx = 0; | |
e1918d23 AM |
10230 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
10231 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10232 | } |
0d4792f7 AM |
10233 | else if (toc_symndx != 0) |
10234 | r_symndx = toc_symndx; | |
951fd09b AM |
10235 | r_type = R_PPC64_TPREL16_HA; |
10236 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10237 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10238 | R_PPC64_TPREL16_LO); | |
4fe5ca5b | 10239 | rel[1].r_offset += d_offset; |
951fd09b AM |
10240 | } |
10241 | if (insn3 == NOP | |
10242 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10243 | { | |
10244 | insn3 = insn2; | |
10245 | insn2 = NOP; | |
10246 | rel[1].r_offset += 4; | |
10247 | } | |
4fe5ca5b | 10248 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset); |
951fd09b AM |
10249 | bfd_put_32 (output_bfd, insn2, contents + offset); |
10250 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 10251 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 10252 | { |
0d4792f7 AM |
10253 | /* We changed the symbol. Start over in order |
10254 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
10255 | rel--; |
10256 | continue; | |
10257 | } | |
411e1bfb | 10258 | } |
411e1bfb | 10259 | } |
411e1bfb AM |
10260 | break; |
10261 | ||
10262 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10263 | if (rel + 1 < relend |
10264 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10265 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10266 | { |
951fd09b AM |
10267 | if ((tls_mask & TLS_GD) == 0) |
10268 | { | |
10269 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10270 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10271 | r_type = R_PPC64_TPREL64; | |
10272 | else | |
10273 | { | |
4ce794b7 | 10274 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10275 | r_type = R_PPC64_NONE; |
10276 | } | |
10277 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10278 | } | |
10279 | } | |
10280 | else | |
10281 | { | |
10282 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10283 | { |
4ce794b7 | 10284 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10285 | r_type = R_PPC64_NONE; |
951fd09b | 10286 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10287 | } |
411e1bfb AM |
10288 | } |
10289 | break; | |
10290 | ||
10291 | case R_PPC64_TPREL64: | |
951fd09b | 10292 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10293 | { |
10294 | r_type = R_PPC64_NONE; | |
10295 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10296 | } | |
10297 | break; | |
10298 | } | |
10299 | ||
10300 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10301 | insn = 0; |
b25116a9 AM |
10302 | max_br_offset = 1 << 25; |
10303 | addend = rel->r_addend; | |
65f38f15 | 10304 | switch (r_type) |
5bd4f169 AM |
10305 | { |
10306 | default: | |
65f38f15 | 10307 | break; |
5bd4f169 | 10308 | |
65f38f15 AM |
10309 | /* Branch taken prediction relocations. */ |
10310 | case R_PPC64_ADDR14_BRTAKEN: | |
10311 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10312 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10313 | /* Fall thru. */ | |
65f38f15 | 10314 | |
86c76c7b | 10315 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10316 | case R_PPC64_ADDR14_BRNTAKEN: |
10317 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10318 | insn |= bfd_get_32 (output_bfd, |
10319 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10320 | /* Fall thru. */ |
86c76c7b | 10321 | |
b25116a9 AM |
10322 | case R_PPC64_REL14: |
10323 | max_br_offset = 1 << 15; | |
10324 | /* Fall thru. */ | |
5bd4f169 | 10325 | |
65f38f15 | 10326 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10327 | /* Calls to functions with a different TOC, such as calls to |
10328 | shared objects, need to alter the TOC pointer. This is | |
10329 | done using a linkage stub. A REL24 branching to these | |
10330 | linkage stubs needs to be followed by a nop, as the nop | |
10331 | will be replaced with an instruction to restore the TOC | |
10332 | base pointer. */ | |
b25116a9 | 10333 | stub_entry = NULL; |
8387904d | 10334 | fdh = h; |
ad8e1ba5 | 10335 | if (((h != NULL |
039b3fef AM |
10336 | && (((fdh = h->oh) != NULL |
10337 | && fdh->elf.plt.plist != NULL) | |
10338 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10339 | || (sec != NULL |
ad8e1ba5 | 10340 | && sec->output_section != NULL |
b25116a9 | 10341 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10342 | && (htab->stub_group[sec->id].toc_off |
10343 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10344 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10345 | rel, htab)) != NULL |
10346 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10347 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10348 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10349 | { |
b25116a9 | 10350 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10351 | |
eea6121a | 10352 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10353 | { |
b25116a9 AM |
10354 | unsigned long nop; |
10355 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10356 | if (nop == NOP | |
10357 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10358 | { |
4ce794b7 | 10359 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10360 | contents + rel->r_offset + 4); |
b25116a9 | 10361 | can_plt_call = TRUE; |
41bd81ab | 10362 | } |
5bd4f169 | 10363 | } |
721956f4 AM |
10364 | |
10365 | if (!can_plt_call) | |
10366 | { | |
ad8e1ba5 AM |
10367 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10368 | { | |
10369 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10370 | and link, don't require a nop. However, don't |
10371 | allow tail calls in a shared library as they | |
10372 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10373 | unsigned long br; |
10374 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10375 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10376 | can_plt_call = TRUE; |
15b552e9 AM |
10377 | else |
10378 | stub_entry = NULL; | |
ad8e1ba5 | 10379 | } |
6ab189d5 | 10380 | else if (h != NULL |
039b3fef | 10381 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10382 | ".__libc_start_main") == 0) |
10383 | { | |
10384 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10385 | can_plt_call = TRUE; |
6ab189d5 | 10386 | } |
ad8e1ba5 AM |
10387 | else |
10388 | { | |
10389 | if (strcmp (input_section->output_section->name, | |
10390 | ".init") == 0 | |
10391 | || strcmp (input_section->output_section->name, | |
10392 | ".fini") == 0) | |
10393 | (*_bfd_error_handler) | |
d003868e | 10394 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10395 | "not supported using your crt files; " |
10396 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10397 | input_bfd, |
10398 | input_section, | |
ad8e1ba5 AM |
10399 | (long) rel->r_offset); |
10400 | else | |
10401 | (*_bfd_error_handler) | |
d003868e | 10402 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10403 | "does not allow automatic multiple TOCs; " |
10404 | "recompile with -mminimal-toc or " | |
10405 | "-fno-optimize-sibling-calls, " | |
10406 | "or make `%s' extern"), | |
d003868e AM |
10407 | input_bfd, |
10408 | input_section, | |
ad8e1ba5 AM |
10409 | (long) rel->r_offset, |
10410 | sym_name, | |
10411 | sym_name); | |
10412 | bfd_set_error (bfd_error_bad_value); | |
10413 | ret = FALSE; | |
10414 | } | |
721956f4 AM |
10415 | } |
10416 | ||
b25116a9 AM |
10417 | if (can_plt_call |
10418 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10419 | unresolved_reloc = FALSE; | |
10420 | } | |
10421 | ||
8387904d AM |
10422 | if (stub_entry == NULL |
10423 | && get_opd_info (sec) != NULL) | |
10424 | { | |
10425 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10426 | bfd_vma off = (relocation + addend |
10427 | - sec->output_section->vma | |
10428 | - sec->output_offset); | |
8387904d AM |
10429 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10430 | if (dest != (bfd_vma) -1) | |
10431 | { | |
10432 | relocation = dest; | |
10433 | addend = 0; | |
10434 | } | |
10435 | } | |
10436 | ||
b25116a9 AM |
10437 | /* If the branch is out of reach we ought to have a long |
10438 | branch stub. */ | |
10439 | from = (rel->r_offset | |
10440 | + input_section->output_offset | |
10441 | + input_section->output_section->vma); | |
10442 | ||
10443 | if (stub_entry == NULL | |
4cc603a5 | 10444 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10445 | >= 2 * max_br_offset) |
10446 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10447 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10448 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10449 | htab); | |
b25116a9 AM |
10450 | |
10451 | if (stub_entry != NULL) | |
10452 | { | |
10453 | /* Munge up the value and addend so that we call the stub | |
10454 | rather than the procedure directly. */ | |
10455 | relocation = (stub_entry->stub_offset | |
10456 | + stub_entry->stub_sec->output_offset | |
10457 | + stub_entry->stub_sec->output_section->vma); | |
10458 | addend = 0; | |
10459 | } | |
10460 | ||
10461 | if (insn != 0) | |
10462 | { | |
10463 | if (is_power4) | |
721956f4 | 10464 | { |
b25116a9 AM |
10465 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10466 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10467 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10468 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10469 | insn |= 0x02 << 21; | |
10470 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10471 | insn |= 0x08 << 21; | |
10472 | else | |
10473 | break; | |
10474 | } | |
10475 | else | |
10476 | { | |
10477 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10478 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10479 | insn ^= 0x01 << 21; |
721956f4 | 10480 | } |
b25116a9 AM |
10481 | |
10482 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10483 | } |
e86ce104 | 10484 | |
06da1e8e AM |
10485 | /* NOP out calls to undefined weak functions. |
10486 | We can thus call a weak function without first | |
10487 | checking whether the function is defined. */ | |
b25116a9 | 10488 | else if (h != NULL |
039b3fef | 10489 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10490 | && r_type == R_PPC64_REL24 |
10491 | && relocation == 0 | |
4cc603a5 | 10492 | && addend == 0) |
e86ce104 | 10493 | { |
06da1e8e AM |
10494 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10495 | continue; | |
e86ce104 | 10496 | } |
65f38f15 AM |
10497 | break; |
10498 | } | |
5bd4f169 | 10499 | |
65f38f15 | 10500 | /* Set `addend'. */ |
411e1bfb | 10501 | tls_type = 0; |
65f38f15 AM |
10502 | switch (r_type) |
10503 | { | |
10504 | default: | |
10505 | (*_bfd_error_handler) | |
d003868e AM |
10506 | (_("%B: unknown relocation type %d for symbol %s"), |
10507 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10508 | |
65f38f15 | 10509 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10510 | ret = FALSE; |
65f38f15 | 10511 | continue; |
5bd4f169 | 10512 | |
65f38f15 | 10513 | case R_PPC64_NONE: |
411e1bfb | 10514 | case R_PPC64_TLS: |
04c9666a AM |
10515 | case R_PPC64_GNU_VTINHERIT: |
10516 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10517 | continue; |
5bd4f169 AM |
10518 | |
10519 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10520 | address in the GOT as relocation value instead of the | |
411e1bfb | 10521 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10522 | symbol and put the symbol value there. */ |
411e1bfb AM |
10523 | case R_PPC64_GOT_TLSGD16: |
10524 | case R_PPC64_GOT_TLSGD16_LO: | |
10525 | case R_PPC64_GOT_TLSGD16_HI: | |
10526 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10527 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10528 | goto dogot; |
10529 | ||
10530 | case R_PPC64_GOT_TLSLD16: | |
10531 | case R_PPC64_GOT_TLSLD16_LO: | |
10532 | case R_PPC64_GOT_TLSLD16_HI: | |
10533 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10534 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10535 | goto dogot; |
10536 | ||
10537 | case R_PPC64_GOT_TPREL16_DS: | |
10538 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10539 | case R_PPC64_GOT_TPREL16_HI: | |
10540 | case R_PPC64_GOT_TPREL16_HA: | |
10541 | tls_type = TLS_TLS | TLS_TPREL; | |
10542 | goto dogot; | |
10543 | ||
10544 | case R_PPC64_GOT_DTPREL16_DS: | |
10545 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10546 | case R_PPC64_GOT_DTPREL16_HI: | |
10547 | case R_PPC64_GOT_DTPREL16_HA: | |
10548 | tls_type = TLS_TLS | TLS_DTPREL; | |
10549 | goto dogot; | |
10550 | ||
65f38f15 AM |
10551 | case R_PPC64_GOT16: |
10552 | case R_PPC64_GOT16_LO: | |
10553 | case R_PPC64_GOT16_HI: | |
10554 | case R_PPC64_GOT16_HA: | |
10555 | case R_PPC64_GOT16_DS: | |
10556 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10557 | dogot: |
5bd4f169 AM |
10558 | { |
10559 | /* Relocation is to the entry for this symbol in the global | |
10560 | offset table. */ | |
e717da7e | 10561 | asection *got; |
d881513a | 10562 | bfd_vma *offp; |
5bd4f169 | 10563 | bfd_vma off; |
d881513a | 10564 | unsigned long indx = 0; |
65f38f15 | 10565 | |
d881513a AM |
10566 | if (tls_type == (TLS_TLS | TLS_LD) |
10567 | && (h == NULL | |
f5385ebf | 10568 | || !h->elf.def_dynamic)) |
e717da7e | 10569 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10570 | else |
5bd4f169 | 10571 | { |
d881513a | 10572 | struct got_entry *ent; |
5bd4f169 | 10573 | |
d881513a AM |
10574 | if (h != NULL) |
10575 | { | |
10576 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10577 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10578 | &h->elf) | |
d881513a | 10579 | || (info->shared |
039b3fef | 10580 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10581 | /* This is actually a static link, or it is a |
10582 | -Bsymbolic link and the symbol is defined | |
10583 | locally, or the symbol was forced to be local | |
10584 | because of a version file. */ | |
10585 | ; | |
10586 | else | |
10587 | { | |
039b3fef | 10588 | indx = h->elf.dynindx; |
d881513a AM |
10589 | unresolved_reloc = FALSE; |
10590 | } | |
039b3fef | 10591 | ent = h->elf.got.glist; |
d881513a | 10592 | } |
411e1bfb | 10593 | else |
5bd4f169 | 10594 | { |
d881513a AM |
10595 | if (local_got_ents == NULL) |
10596 | abort (); | |
10597 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10598 | } |
d881513a AM |
10599 | |
10600 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10601 | if (ent->addend == orig_addend |
e717da7e | 10602 | && ent->owner == input_bfd |
d881513a AM |
10603 | && ent->tls_type == tls_type) |
10604 | break; | |
10605 | if (ent == NULL) | |
10606 | abort (); | |
10607 | offp = &ent->got.offset; | |
5bd4f169 | 10608 | } |
411e1bfb | 10609 | |
e717da7e AM |
10610 | got = ppc64_elf_tdata (input_bfd)->got; |
10611 | if (got == NULL) | |
10612 | abort (); | |
10613 | ||
411e1bfb AM |
10614 | /* The offset must always be a multiple of 8. We use the |
10615 | least significant bit to record whether we have already | |
10616 | processed this entry. */ | |
d881513a | 10617 | off = *offp; |
411e1bfb AM |
10618 | if ((off & 1) != 0) |
10619 | off &= ~1; | |
5bd4f169 AM |
10620 | else |
10621 | { | |
411e1bfb AM |
10622 | /* Generate relocs for the dynamic linker, except in |
10623 | the case of TLSLD where we'll use one entry per | |
10624 | module. */ | |
e717da7e AM |
10625 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10626 | ||
d881513a | 10627 | *offp = off | 1; |
4e795f50 AM |
10628 | if ((info->shared || indx != 0) |
10629 | && (h == NULL | |
039b3fef AM |
10630 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10631 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10632 | { |
e717da7e AM |
10633 | outrel.r_offset = (got->output_section->vma |
10634 | + got->output_offset | |
411e1bfb | 10635 | + off); |
4cc603a5 | 10636 | outrel.r_addend = addend; |
d881513a | 10637 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10638 | { |
411e1bfb | 10639 | outrel.r_addend = 0; |
e515b051 | 10640 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10641 | if (tls_type == (TLS_TLS | TLS_GD)) |
10642 | { | |
e717da7e AM |
10643 | loc = relgot->contents; |
10644 | loc += (relgot->reloc_count++ | |
d881513a AM |
10645 | * sizeof (Elf64_External_Rela)); |
10646 | bfd_elf64_swap_reloca_out (output_bfd, | |
10647 | &outrel, loc); | |
e515b051 | 10648 | outrel.r_offset += 8; |
4cc603a5 | 10649 | outrel.r_addend = addend; |
d881513a AM |
10650 | outrel.r_info |
10651 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10652 | } |
411e1bfb | 10653 | } |
951fd09b | 10654 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10655 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10656 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10657 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10658 | else if (indx == 0) | |
81407a69 AM |
10659 | { |
10660 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10661 | ||
10662 | /* Write the .got section contents for the sake | |
10663 | of prelink. */ | |
e717da7e | 10664 | loc = got->contents + off; |
23fbd6fa JJ |
10665 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10666 | loc); | |
81407a69 | 10667 | } |
411e1bfb AM |
10668 | else |
10669 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10670 | |
10671 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10672 | { |
10673 | outrel.r_addend += relocation; | |
10674 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10675 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10676 | } |
e717da7e AM |
10677 | loc = relgot->contents; |
10678 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10679 | * sizeof (Elf64_External_Rela)); |
10680 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10681 | } | |
10682 | ||
ad8e1ba5 | 10683 | /* Init the .got section contents here if we're not |
81407a69 | 10684 | emitting a reloc. */ |
d881513a | 10685 | else |
411e1bfb | 10686 | { |
4cc603a5 | 10687 | relocation += addend; |
7b609f53 AM |
10688 | if (tls_type == (TLS_TLS | TLS_LD)) |
10689 | relocation = 1; | |
10690 | else if (tls_type != 0) | |
411e1bfb | 10691 | { |
e1918d23 | 10692 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10693 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10694 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10695 | |
7b609f53 AM |
10696 | if (tls_type == (TLS_TLS | TLS_GD)) |
10697 | { | |
10698 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10699 | got->contents + off + 8); |
7b609f53 AM |
10700 | relocation = 1; |
10701 | } | |
411e1bfb | 10702 | } |
7b609f53 | 10703 | |
411e1bfb | 10704 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10705 | got->contents + off); |
5bd4f169 AM |
10706 | } |
10707 | } | |
10708 | ||
65f38f15 AM |
10709 | if (off >= (bfd_vma) -2) |
10710 | abort (); | |
10711 | ||
e717da7e | 10712 | relocation = got->output_offset + off; |
65f38f15 | 10713 | |
5bd4f169 | 10714 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10715 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10716 | } |
65f38f15 AM |
10717 | break; |
10718 | ||
10719 | case R_PPC64_PLT16_HA: | |
10720 | case R_PPC64_PLT16_HI: | |
10721 | case R_PPC64_PLT16_LO: | |
10722 | case R_PPC64_PLT32: | |
10723 | case R_PPC64_PLT64: | |
10724 | /* Relocation is to the entry for this symbol in the | |
10725 | procedure linkage table. */ | |
10726 | ||
10727 | /* Resolve a PLT reloc against a local symbol directly, | |
10728 | without using the procedure linkage table. */ | |
10729 | if (h == NULL) | |
10730 | break; | |
10731 | ||
411e1bfb AM |
10732 | /* It's possible that we didn't make a PLT entry for this |
10733 | symbol. This happens when statically linking PIC code, | |
10734 | or when using -Bsymbolic. Go find a match if there is a | |
10735 | PLT entry. */ | |
4ce794b7 | 10736 | if (htab->plt != NULL) |
65f38f15 | 10737 | { |
411e1bfb | 10738 | struct plt_entry *ent; |
039b3fef | 10739 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10740 | if (ent->addend == orig_addend |
411e1bfb AM |
10741 | && ent->plt.offset != (bfd_vma) -1) |
10742 | { | |
4ce794b7 AM |
10743 | relocation = (htab->plt->output_section->vma |
10744 | + htab->plt->output_offset | |
411e1bfb AM |
10745 | + ent->plt.offset); |
10746 | unresolved_reloc = FALSE; | |
10747 | } | |
65f38f15 | 10748 | } |
65f38f15 | 10749 | break; |
5bd4f169 | 10750 | |
0b13192e AM |
10751 | case R_PPC64_TOC: |
10752 | /* Relocation value is TOC base. */ | |
10753 | relocation = TOCstart; | |
10754 | if (r_symndx == 0) | |
10755 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10756 | else if (unresolved_reloc) |
10757 | ; | |
10758 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10759 | relocation += htab->stub_group[sec->id].toc_off; |
10760 | else | |
10761 | unresolved_reloc = TRUE; | |
ab96bf03 | 10762 | goto dodyn; |
0b13192e | 10763 | |
5bd4f169 AM |
10764 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10765 | which is the address of the start of the TOC plus 0x8000. | |
10766 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10767 | in this order. */ | |
65f38f15 AM |
10768 | case R_PPC64_TOC16: |
10769 | case R_PPC64_TOC16_LO: | |
10770 | case R_PPC64_TOC16_HI: | |
10771 | case R_PPC64_TOC16_DS: | |
10772 | case R_PPC64_TOC16_LO_DS: | |
10773 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10774 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10775 | break; |
10776 | ||
10777 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10778 | case R_PPC64_SECTOFF: |
10779 | case R_PPC64_SECTOFF_LO: | |
10780 | case R_PPC64_SECTOFF_HI: | |
10781 | case R_PPC64_SECTOFF_DS: | |
10782 | case R_PPC64_SECTOFF_LO_DS: | |
10783 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10784 | if (sec != NULL) |
65f38f15 | 10785 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10786 | break; |
10787 | ||
721956f4 AM |
10788 | case R_PPC64_REL14: |
10789 | case R_PPC64_REL14_BRNTAKEN: | |
10790 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10791 | case R_PPC64_REL24: |
10792 | break; | |
10793 | ||
411e1bfb AM |
10794 | case R_PPC64_TPREL16: |
10795 | case R_PPC64_TPREL16_LO: | |
10796 | case R_PPC64_TPREL16_HI: | |
10797 | case R_PPC64_TPREL16_HA: | |
10798 | case R_PPC64_TPREL16_DS: | |
10799 | case R_PPC64_TPREL16_LO_DS: | |
10800 | case R_PPC64_TPREL16_HIGHER: | |
10801 | case R_PPC64_TPREL16_HIGHERA: | |
10802 | case R_PPC64_TPREL16_HIGHEST: | |
10803 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10804 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10805 | if (info->shared) |
10806 | /* The TPREL16 relocs shouldn't really be used in shared | |
10807 | libs as they will result in DT_TEXTREL being set, but | |
10808 | support them anyway. */ | |
10809 | goto dodyn; | |
10810 | break; | |
10811 | ||
10812 | case R_PPC64_DTPREL16: | |
10813 | case R_PPC64_DTPREL16_LO: | |
10814 | case R_PPC64_DTPREL16_HI: | |
10815 | case R_PPC64_DTPREL16_HA: | |
10816 | case R_PPC64_DTPREL16_DS: | |
10817 | case R_PPC64_DTPREL16_LO_DS: | |
10818 | case R_PPC64_DTPREL16_HIGHER: | |
10819 | case R_PPC64_DTPREL16_HIGHERA: | |
10820 | case R_PPC64_DTPREL16_HIGHEST: | |
10821 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10822 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10823 | break; |
10824 | ||
e515b051 AM |
10825 | case R_PPC64_DTPMOD64: |
10826 | relocation = 1; | |
10827 | addend = 0; | |
10828 | goto dodyn; | |
10829 | ||
411e1bfb | 10830 | case R_PPC64_TPREL64: |
e1918d23 | 10831 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10832 | goto dodyn; |
10833 | ||
10834 | case R_PPC64_DTPREL64: | |
e1918d23 | 10835 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10836 | /* Fall thru */ |
10837 | ||
65f38f15 AM |
10838 | /* Relocations that may need to be propagated if this is a |
10839 | dynamic object. */ | |
04c9666a | 10840 | case R_PPC64_REL30: |
65f38f15 AM |
10841 | case R_PPC64_REL32: |
10842 | case R_PPC64_REL64: | |
10843 | case R_PPC64_ADDR14: | |
10844 | case R_PPC64_ADDR14_BRNTAKEN: | |
10845 | case R_PPC64_ADDR14_BRTAKEN: | |
10846 | case R_PPC64_ADDR16: | |
10847 | case R_PPC64_ADDR16_DS: | |
10848 | case R_PPC64_ADDR16_HA: | |
10849 | case R_PPC64_ADDR16_HI: | |
10850 | case R_PPC64_ADDR16_HIGHER: | |
10851 | case R_PPC64_ADDR16_HIGHERA: | |
10852 | case R_PPC64_ADDR16_HIGHEST: | |
10853 | case R_PPC64_ADDR16_HIGHESTA: | |
10854 | case R_PPC64_ADDR16_LO: | |
10855 | case R_PPC64_ADDR16_LO_DS: | |
10856 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10857 | case R_PPC64_ADDR32: |
10858 | case R_PPC64_ADDR64: | |
10859 | case R_PPC64_UADDR16: | |
10860 | case R_PPC64_UADDR32: | |
10861 | case R_PPC64_UADDR64: | |
411e1bfb | 10862 | dodyn: |
5d1634d7 | 10863 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10864 | break; |
10865 | ||
41bd81ab AM |
10866 | if (NO_OPD_RELOCS && is_opd) |
10867 | break; | |
10868 | ||
65f38f15 | 10869 | if ((info->shared |
4e795f50 | 10870 | && (h == NULL |
039b3fef AM |
10871 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10872 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10873 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10874 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10875 | || (ELIMINATE_COPY_RELOCS |
10876 | && !info->shared | |
65f38f15 | 10877 | && h != NULL |
039b3fef | 10878 | && h->elf.dynindx != -1 |
f5385ebf AM |
10879 | && !h->elf.non_got_ref |
10880 | && h->elf.def_dynamic | |
10881 | && !h->elf.def_regular)) | |
65f38f15 AM |
10882 | { |
10883 | Elf_Internal_Rela outrel; | |
b34976b6 | 10884 | bfd_boolean skip, relocate; |
65f38f15 | 10885 | asection *sreloc; |
947216bf | 10886 | bfd_byte *loc; |
1cf1f670 | 10887 | bfd_vma out_off; |
65f38f15 AM |
10888 | |
10889 | /* When generating a dynamic object, these relocations | |
10890 | are copied into the output file to be resolved at run | |
10891 | time. */ | |
10892 | ||
b34976b6 AM |
10893 | skip = FALSE; |
10894 | relocate = FALSE; | |
65f38f15 | 10895 | |
1cf1f670 AM |
10896 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10897 | input_section, rel->r_offset); | |
10898 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10899 | skip = TRUE; |
1cf1f670 | 10900 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10901 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10902 | out_off += (input_section->output_section->vma |
10903 | + input_section->output_offset); | |
10904 | outrel.r_offset = out_off; | |
411e1bfb | 10905 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10906 | |
1cf1f670 AM |
10907 | /* Optimize unaligned reloc use. */ |
10908 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10909 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10910 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10911 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10912 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10913 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10914 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10915 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10916 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10917 | ||
65f38f15 | 10918 | if (skip) |
0bb2d96a | 10919 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10920 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10921 | && !is_opd |
10922 | && r_type != R_PPC64_TOC) | |
039b3fef | 10923 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10924 | else |
10925 | { | |
41bd81ab AM |
10926 | /* This symbol is local, or marked to become local, |
10927 | or this is an opd section reloc which must point | |
10928 | at a local function. */ | |
65f38f15 | 10929 | outrel.r_addend += relocation; |
e86ce104 | 10930 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10931 | { |
3fad3c7c | 10932 | if (is_opd && h != NULL) |
afbe61cf AM |
10933 | { |
10934 | /* Lie about opd entries. This case occurs | |
10935 | when building shared libraries and we | |
10936 | reference a function in another shared | |
3fad3c7c AM |
10937 | lib. The same thing happens for a weak |
10938 | definition in an application that's | |
10939 | overridden by a strong definition in a | |
10940 | shared lib. (I believe this is a generic | |
10941 | bug in binutils handling of weak syms.) | |
10942 | In these cases we won't use the opd | |
1e2f5b6e | 10943 | entry in this lib. */ |
b34976b6 | 10944 | unresolved_reloc = FALSE; |
afbe61cf | 10945 | } |
65f38f15 | 10946 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10947 | |
10948 | /* We need to relocate .opd contents for ld.so. | |
10949 | Prelink also wants simple and consistent rules | |
10950 | for relocs. This make all RELATIVE relocs have | |
10951 | *r_offset equal to r_addend. */ | |
10952 | relocate = TRUE; | |
65f38f15 AM |
10953 | } |
10954 | else | |
10955 | { | |
10956 | long indx = 0; | |
10957 | ||
41bd81ab | 10958 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10959 | ; |
10960 | else if (sec == NULL || sec->owner == NULL) | |
10961 | { | |
10962 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10963 | return FALSE; |
65f38f15 AM |
10964 | } |
10965 | else | |
10966 | { | |
10967 | asection *osec; | |
10968 | ||
10969 | osec = sec->output_section; | |
10970 | indx = elf_section_data (osec)->dynindx; | |
10971 | ||
74541ad4 AM |
10972 | if (indx == 0) |
10973 | { | |
10974 | if ((osec->flags & SEC_READONLY) == 0 | |
10975 | && htab->elf.data_index_section != NULL) | |
10976 | osec = htab->elf.data_index_section; | |
10977 | else | |
10978 | osec = htab->elf.text_index_section; | |
10979 | indx = elf_section_data (osec)->dynindx; | |
10980 | } | |
10981 | BFD_ASSERT (indx != 0); | |
10982 | ||
65f38f15 AM |
10983 | /* We are turning this relocation into one |
10984 | against a section symbol, so subtract out | |
10985 | the output section's address but not the | |
10986 | offset of the input section in the output | |
10987 | section. */ | |
10988 | outrel.r_addend -= osec->vma; | |
10989 | } | |
10990 | ||
10991 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10992 | } | |
10993 | } | |
10994 | ||
10995 | sreloc = elf_section_data (input_section)->sreloc; | |
10996 | if (sreloc == NULL) | |
10997 | abort (); | |
10998 | ||
dfbb6ac9 AM |
10999 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
11000 | >= sreloc->size) | |
11001 | abort (); | |
947216bf AM |
11002 | loc = sreloc->contents; |
11003 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
11004 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
11005 | ||
11006 | /* If this reloc is against an external symbol, it will | |
11007 | be computed at runtime, so there's no need to do | |
81407a69 AM |
11008 | anything now. However, for the sake of prelink ensure |
11009 | that the section contents are a known value. */ | |
65f38f15 | 11010 | if (! relocate) |
81407a69 AM |
11011 | { |
11012 | unresolved_reloc = FALSE; | |
11013 | /* The value chosen here is quite arbitrary as ld.so | |
11014 | ignores section contents except for the special | |
11015 | case of .opd where the contents might be accessed | |
11016 | before relocation. Choose zero, as that won't | |
11017 | cause reloc overflow. */ | |
11018 | relocation = 0; | |
11019 | addend = 0; | |
11020 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11021 | to improve backward compatibility with older | |
11022 | versions of ld. */ | |
11023 | if (r_type == R_PPC64_ADDR64) | |
11024 | addend = outrel.r_addend; | |
11025 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11026 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11027 | addend = (input_section->output_section->vma |
11028 | + input_section->output_offset | |
11029 | + rel->r_offset); | |
81407a69 | 11030 | } |
65f38f15 | 11031 | } |
5bd4f169 AM |
11032 | break; |
11033 | ||
65f38f15 AM |
11034 | case R_PPC64_COPY: |
11035 | case R_PPC64_GLOB_DAT: | |
11036 | case R_PPC64_JMP_SLOT: | |
11037 | case R_PPC64_RELATIVE: | |
11038 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11039 | files. */ | |
ae9a127f | 11040 | /* Fall through. */ |
65f38f15 AM |
11041 | |
11042 | case R_PPC64_PLTGOT16: | |
11043 | case R_PPC64_PLTGOT16_DS: | |
11044 | case R_PPC64_PLTGOT16_HA: | |
11045 | case R_PPC64_PLTGOT16_HI: | |
11046 | case R_PPC64_PLTGOT16_LO: | |
11047 | case R_PPC64_PLTGOT16_LO_DS: | |
11048 | case R_PPC64_PLTREL32: | |
11049 | case R_PPC64_PLTREL64: | |
11050 | /* These ones haven't been implemented yet. */ | |
11051 | ||
11052 | (*_bfd_error_handler) | |
d003868e AM |
11053 | (_("%B: relocation %s is not supported for symbol %s."), |
11054 | input_bfd, | |
4ce794b7 | 11055 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11056 | |
11057 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11058 | ret = FALSE; |
5bd4f169 | 11059 | continue; |
65f38f15 | 11060 | } |
5bd4f169 | 11061 | |
65f38f15 AM |
11062 | /* Do any further special processing. */ |
11063 | switch (r_type) | |
11064 | { | |
11065 | default: | |
11066 | break; | |
11067 | ||
11068 | case R_PPC64_ADDR16_HA: | |
11069 | case R_PPC64_ADDR16_HIGHERA: | |
11070 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11071 | case R_PPC64_TOC16_HA: |
11072 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11073 | case R_PPC64_TPREL16_HA: |
11074 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11075 | case R_PPC64_TPREL16_HIGHER: |
11076 | case R_PPC64_TPREL16_HIGHERA: | |
11077 | case R_PPC64_TPREL16_HIGHEST: | |
11078 | case R_PPC64_TPREL16_HIGHESTA: | |
11079 | case R_PPC64_DTPREL16_HIGHER: | |
11080 | case R_PPC64_DTPREL16_HIGHERA: | |
11081 | case R_PPC64_DTPREL16_HIGHEST: | |
11082 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11083 | /* It's just possible that this symbol is a weak symbol |
11084 | that's not actually defined anywhere. In that case, | |
11085 | 'sec' would be NULL, and we should leave the symbol | |
11086 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11087 | if (sec == NULL) |
11088 | break; | |
11089 | /* Fall thru */ | |
11090 | ||
11091 | case R_PPC64_GOT16_HA: | |
11092 | case R_PPC64_PLTGOT16_HA: | |
11093 | case R_PPC64_PLT16_HA: | |
11094 | case R_PPC64_GOT_TLSGD16_HA: | |
11095 | case R_PPC64_GOT_TLSLD16_HA: | |
11096 | case R_PPC64_GOT_TPREL16_HA: | |
11097 | case R_PPC64_GOT_DTPREL16_HA: | |
11098 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11099 | Bits 0:15 are not used. */ | |
11100 | addend += 0x8000; | |
65f38f15 AM |
11101 | break; |
11102 | ||
11103 | case R_PPC64_ADDR16_DS: | |
11104 | case R_PPC64_ADDR16_LO_DS: | |
11105 | case R_PPC64_GOT16_DS: | |
11106 | case R_PPC64_GOT16_LO_DS: | |
11107 | case R_PPC64_PLT16_LO_DS: | |
11108 | case R_PPC64_SECTOFF_DS: | |
11109 | case R_PPC64_SECTOFF_LO_DS: | |
11110 | case R_PPC64_TOC16_DS: | |
11111 | case R_PPC64_TOC16_LO_DS: | |
11112 | case R_PPC64_PLTGOT16_DS: | |
11113 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11114 | case R_PPC64_GOT_TPREL16_DS: |
11115 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11116 | case R_PPC64_GOT_DTPREL16_DS: | |
11117 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11118 | case R_PPC64_TPREL16_DS: | |
11119 | case R_PPC64_TPREL16_LO_DS: | |
11120 | case R_PPC64_DTPREL16_DS: | |
11121 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11122 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11123 | mask = 3; | |
11124 | /* If this reloc is against an lq insn, then the value must be | |
11125 | a multiple of 16. This is somewhat of a hack, but the | |
11126 | "correct" way to do this by defining _DQ forms of all the | |
11127 | _DS relocs bloats all reloc switches in this file. It | |
11128 | doesn't seem to make much sense to use any of these relocs | |
11129 | in data, so testing the insn should be safe. */ | |
494dac0c | 11130 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11131 | mask = 15; |
11132 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11133 | { |
11134 | (*_bfd_error_handler) | |
d003868e AM |
11135 | (_("%B: error: relocation %s not a multiple of %d"), |
11136 | input_bfd, | |
4ce794b7 | 11137 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11138 | mask + 1); |
65f38f15 | 11139 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11140 | ret = FALSE; |
65f38f15 AM |
11141 | continue; |
11142 | } | |
11143 | break; | |
5bd4f169 AM |
11144 | } |
11145 | ||
239e1f3a AM |
11146 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11147 | because such sections are not SEC_ALLOC and thus ld.so will | |
11148 | not process them. */ | |
65f38f15 | 11149 | if (unresolved_reloc |
239e1f3a | 11150 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11151 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11152 | { |
11153 | (*_bfd_error_handler) | |
d003868e AM |
11154 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11155 | input_bfd, | |
11156 | input_section, | |
9c07fe7c | 11157 | (long) rel->r_offset, |
7b609f53 | 11158 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11159 | h->elf.root.root.string); |
b34976b6 | 11160 | ret = FALSE; |
9c07fe7c | 11161 | } |
5bd4f169 | 11162 | |
65f38f15 | 11163 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11164 | input_bfd, |
11165 | input_section, | |
11166 | contents, | |
411e1bfb | 11167 | rel->r_offset, |
5bd4f169 AM |
11168 | relocation, |
11169 | addend); | |
11170 | ||
ef60b7ff | 11171 | if (r != bfd_reloc_ok) |
5bd4f169 | 11172 | { |
cd27b276 AM |
11173 | if (sym_name == NULL) |
11174 | sym_name = "(null)"; | |
11175 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11176 | { |
cd27b276 AM |
11177 | if (warned) |
11178 | continue; | |
11179 | if (h != NULL | |
039b3fef | 11180 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11181 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11182 | { |
11183 | /* Assume this is a call protected by other code that | |
11184 | detects the symbol is undefined. If this is the case, | |
11185 | we can safely ignore the overflow. If not, the | |
11186 | program is hosed anyway, and a little warning isn't | |
11187 | going to help. */ | |
11188 | ||
11189 | continue; | |
11190 | } | |
11191 | ||
ef60b7ff | 11192 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11193 | (info, (h ? &h->elf.root : NULL), sym_name, |
11194 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11195 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11196 | return FALSE; |
ef60b7ff AM |
11197 | } |
11198 | else | |
11199 | { | |
11200 | (*_bfd_error_handler) | |
d003868e AM |
11201 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11202 | input_bfd, | |
11203 | input_section, | |
7b609f53 | 11204 | (long) rel->r_offset, |
4ce794b7 | 11205 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11206 | sym_name, |
11207 | (int) r); | |
b34976b6 | 11208 | ret = FALSE; |
ef60b7ff | 11209 | } |
5bd4f169 | 11210 | } |
5bd4f169 AM |
11211 | } |
11212 | ||
645ea6a9 AM |
11213 | /* If we're emitting relocations, then shortly after this function |
11214 | returns, reloc offsets and addends for this section will be | |
11215 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11216 | file rather than the input. Save a copy of the relocs for |
11217 | opd_entry_value. */ | |
4cc603a5 | 11218 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11219 | { |
11220 | bfd_size_type amt; | |
11221 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11222 | rel = bfd_alloc (input_bfd, amt); | |
11223 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11224 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11225 | if (rel == NULL) | |
11226 | return FALSE; | |
11227 | memcpy (rel, relocs, amt); | |
11228 | } | |
5bd4f169 AM |
11229 | return ret; |
11230 | } | |
11231 | ||
754021d0 AM |
11232 | /* Adjust the value of any local symbols in opd sections. */ |
11233 | ||
11234 | static bfd_boolean | |
11235 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11236 | const char *name ATTRIBUTE_UNUSED, | |
11237 | Elf_Internal_Sym *elfsym, | |
11238 | asection *input_sec, | |
11239 | struct elf_link_hash_entry *h) | |
11240 | { | |
4025353c | 11241 | long *opd_adjust, adjust; |
754021d0 AM |
11242 | bfd_vma value; |
11243 | ||
4025353c AM |
11244 | if (h != NULL) |
11245 | return TRUE; | |
11246 | ||
11247 | opd_adjust = get_opd_info (input_sec); | |
11248 | if (opd_adjust == NULL) | |
754021d0 AM |
11249 | return TRUE; |
11250 | ||
11251 | value = elfsym->st_value - input_sec->output_offset; | |
11252 | if (!info->relocatable) | |
11253 | value -= input_sec->output_section->vma; | |
11254 | ||
3f764659 | 11255 | adjust = opd_adjust[value / 8]; |
4025353c AM |
11256 | if (adjust == -1) |
11257 | elfsym->st_value = 0; | |
11258 | else | |
11259 | elfsym->st_value += adjust; | |
754021d0 AM |
11260 | return TRUE; |
11261 | } | |
11262 | ||
5bd4f169 AM |
11263 | /* Finish up dynamic symbol handling. We set the contents of various |
11264 | dynamic sections here. */ | |
11265 | ||
b34976b6 | 11266 | static bfd_boolean |
4ce794b7 AM |
11267 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11268 | struct bfd_link_info *info, | |
11269 | struct elf_link_hash_entry *h, | |
11270 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11271 | { |
65f38f15 | 11272 | struct ppc_link_hash_table *htab; |
8387904d AM |
11273 | struct plt_entry *ent; |
11274 | Elf_Internal_Rela rela; | |
11275 | bfd_byte *loc; | |
5bd4f169 | 11276 | |
65f38f15 | 11277 | htab = ppc_hash_table (info); |
5bd4f169 | 11278 | |
8387904d AM |
11279 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11280 | if (ent->plt.offset != (bfd_vma) -1) | |
11281 | { | |
11282 | /* This symbol has an entry in the procedure linkage | |
11283 | table. Set it up. */ | |
11284 | ||
11285 | if (htab->plt == NULL | |
11286 | || htab->relplt == NULL | |
11287 | || htab->glink == NULL) | |
11288 | abort (); | |
11289 | ||
11290 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11291 | fill in the PLT entry. */ | |
11292 | rela.r_offset = (htab->plt->output_section->vma | |
11293 | + htab->plt->output_offset | |
11294 | + ent->plt.offset); | |
11295 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11296 | rela.r_addend = ent->addend; | |
11297 | ||
11298 | loc = htab->relplt->contents; | |
11299 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11300 | * sizeof (Elf64_External_Rela)); | |
11301 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11302 | } | |
5bd4f169 | 11303 | |
f5385ebf | 11304 | if (h->needs_copy) |
5bd4f169 | 11305 | { |
5bd4f169 | 11306 | Elf_Internal_Rela rela; |
947216bf | 11307 | bfd_byte *loc; |
5bd4f169 | 11308 | |
65f38f15 | 11309 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11310 | |
65f38f15 AM |
11311 | if (h->dynindx == -1 |
11312 | || (h->root.type != bfd_link_hash_defined | |
11313 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11314 | || htab->relbss == NULL) |
65f38f15 | 11315 | abort (); |
5bd4f169 AM |
11316 | |
11317 | rela.r_offset = (h->root.u.def.value | |
11318 | + h->root.u.def.section->output_section->vma | |
11319 | + h->root.u.def.section->output_offset); | |
11320 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11321 | rela.r_addend = 0; | |
4ce794b7 AM |
11322 | loc = htab->relbss->contents; |
11323 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11324 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11325 | } |
11326 | ||
5bd4f169 AM |
11327 | /* Mark some specially defined symbols as absolute. */ |
11328 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11329 | sym->st_shndx = SHN_ABS; | |
11330 | ||
b34976b6 | 11331 | return TRUE; |
5bd4f169 AM |
11332 | } |
11333 | ||
65f38f15 AM |
11334 | /* Used to decide how to sort relocs in an optimal manner for the |
11335 | dynamic linker, before writing them out. */ | |
11336 | ||
11337 | static enum elf_reloc_type_class | |
4ce794b7 | 11338 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11339 | { |
04c9666a | 11340 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11341 | |
4ce794b7 | 11342 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11343 | switch (r_type) |
65f38f15 AM |
11344 | { |
11345 | case R_PPC64_RELATIVE: | |
11346 | return reloc_class_relative; | |
11347 | case R_PPC64_JMP_SLOT: | |
11348 | return reloc_class_plt; | |
11349 | case R_PPC64_COPY: | |
11350 | return reloc_class_copy; | |
11351 | default: | |
11352 | return reloc_class_normal; | |
11353 | } | |
11354 | } | |
11355 | ||
5bd4f169 AM |
11356 | /* Finish up the dynamic sections. */ |
11357 | ||
b34976b6 | 11358 | static bfd_boolean |
4ce794b7 AM |
11359 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11360 | struct bfd_link_info *info) | |
5bd4f169 | 11361 | { |
65f38f15 AM |
11362 | struct ppc_link_hash_table *htab; |
11363 | bfd *dynobj; | |
5bd4f169 | 11364 | asection *sdyn; |
5bd4f169 | 11365 | |
65f38f15 AM |
11366 | htab = ppc_hash_table (info); |
11367 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11368 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11369 | ||
65f38f15 | 11370 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11371 | { |
5bd4f169 AM |
11372 | Elf64_External_Dyn *dyncon, *dynconend; |
11373 | ||
4ce794b7 | 11374 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11375 | abort (); |
5bd4f169 AM |
11376 | |
11377 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11378 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11379 | for (; dyncon < dynconend; dyncon++) |
11380 | { | |
11381 | Elf_Internal_Dyn dyn; | |
19397422 | 11382 | asection *s; |
5bd4f169 AM |
11383 | |
11384 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11385 | ||
11386 | switch (dyn.d_tag) | |
11387 | { | |
65f38f15 AM |
11388 | default: |
11389 | continue; | |
5bd4f169 | 11390 | |
5d1634d7 | 11391 | case DT_PPC64_GLINK: |
4ce794b7 | 11392 | s = htab->glink; |
6348e046 | 11393 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11394 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11395 | of glink rather than the first entry point, which is | |
11396 | what ld.so needs, and now have a bigger stub to | |
11397 | support automatic multiple TOCs. */ | |
11398 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11399 | break; |
11400 | ||
19397422 AM |
11401 | case DT_PPC64_OPD: |
11402 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11403 | if (s == NULL) |
11404 | continue; | |
11405 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11406 | break; |
11407 | ||
11408 | case DT_PPC64_OPDSZ: | |
11409 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11410 | if (s == NULL) |
11411 | continue; | |
eea6121a | 11412 | dyn.d_un.d_val = s->size; |
19397422 AM |
11413 | break; |
11414 | ||
65f38f15 | 11415 | case DT_PLTGOT: |
4ce794b7 | 11416 | s = htab->plt; |
6348e046 | 11417 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11418 | break; |
11419 | ||
11420 | case DT_JMPREL: | |
4ce794b7 | 11421 | s = htab->relplt; |
6348e046 | 11422 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11423 | break; |
5bd4f169 | 11424 | |
65f38f15 | 11425 | case DT_PLTRELSZ: |
eea6121a | 11426 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11427 | break; |
11428 | ||
11429 | case DT_RELASZ: | |
11430 | /* Don't count procedure linkage table relocs in the | |
11431 | overall reloc count. */ | |
4ce794b7 | 11432 | s = htab->relplt; |
6348e046 AM |
11433 | if (s == NULL) |
11434 | continue; | |
eea6121a | 11435 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11436 | break; |
11437 | ||
11438 | case DT_RELA: | |
11439 | /* We may not be using the standard ELF linker script. | |
11440 | If .rela.plt is the first .rela section, we adjust | |
11441 | DT_RELA to not include it. */ | |
4ce794b7 | 11442 | s = htab->relplt; |
6348e046 AM |
11443 | if (s == NULL) |
11444 | continue; | |
11445 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11446 | continue; | |
eea6121a | 11447 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11448 | break; |
5bd4f169 | 11449 | } |
5bd4f169 | 11450 | |
65f38f15 | 11451 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11452 | } |
5bd4f169 AM |
11453 | } |
11454 | ||
eea6121a | 11455 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11456 | { |
11457 | /* Fill in the first entry in the global offset table. | |
11458 | We use it to hold the link-time TOCbase. */ | |
11459 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11460 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11461 | htab->got->contents); |
5d1634d7 AM |
11462 | |
11463 | /* Set .got entry size. */ | |
4ce794b7 | 11464 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11465 | } |
11466 | ||
eea6121a | 11467 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11468 | { |
11469 | /* Set .plt entry size. */ | |
4ce794b7 | 11470 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11471 | = PLT_ENTRY_SIZE; |
11472 | } | |
11473 | ||
84f5d08e AM |
11474 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
11475 | brlt ourselves if emitrelocations. */ | |
11476 | if (htab->brlt != NULL | |
11477 | && htab->brlt->reloc_count != 0 | |
11478 | && !_bfd_elf_link_output_relocs (output_bfd, | |
11479 | htab->brlt, | |
11480 | &elf_section_data (htab->brlt)->rel_hdr, | |
11481 | elf_section_data (htab->brlt)->relocs, | |
11482 | NULL)) | |
11483 | return FALSE; | |
11484 | ||
e717da7e | 11485 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11486 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11487 | bfd. */ | |
e717da7e AM |
11488 | while ((dynobj = dynobj->link_next) != NULL) |
11489 | { | |
11490 | asection *s; | |
7b53ace3 | 11491 | |
ee75fd95 | 11492 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11493 | continue; |
11494 | ||
e717da7e AM |
11495 | s = ppc64_elf_tdata (dynobj)->got; |
11496 | if (s != NULL | |
eea6121a | 11497 | && s->size != 0 |
e717da7e AM |
11498 | && s->output_section != bfd_abs_section_ptr |
11499 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11500 | s->contents, s->output_offset, | |
eea6121a | 11501 | s->size)) |
e717da7e AM |
11502 | return FALSE; |
11503 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11504 | if (s != NULL | |
eea6121a | 11505 | && s->size != 0 |
e717da7e AM |
11506 | && s->output_section != bfd_abs_section_ptr |
11507 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11508 | s->contents, s->output_offset, | |
eea6121a | 11509 | s->size)) |
e717da7e AM |
11510 | return FALSE; |
11511 | } | |
f6c52c13 | 11512 | |
b34976b6 | 11513 | return TRUE; |
5bd4f169 AM |
11514 | } |
11515 | ||
5bd4f169 | 11516 | #include "elf64-target.h" |