Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
bce50a28 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
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 | |
76 | ||
e717da7e | 77 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 AM |
78 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
79 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data | |
80 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
81 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
82 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 83 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
84 | |
85 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
86 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
87 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 88 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
89 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
90 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 91 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d | 92 | #define elf_backend_check_directives ppc64_elf_check_directives |
97fed1c9 | 93 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 94 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 95 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
64d03ab5 | 96 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
97 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
98 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
99 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
100 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
101 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
102 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 103 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 104 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
105 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
106 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
107 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
108 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 109 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 110 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 111 | |
5bd4f169 AM |
112 | /* The name of the dynamic interpreter. This is put in the .interp |
113 | section. */ | |
114 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
115 | ||
116 | /* The size in bytes of an entry in the procedure linkage table. */ | |
117 | #define PLT_ENTRY_SIZE 24 | |
118 | ||
119 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 120 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
121 | |
122 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
123 | #define TOC_BASE_OFF 0x8000 |
124 | ||
125 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
126 | #define TP_OFFSET 0x7000 | |
127 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 128 | |
ad8e1ba5 AM |
129 | /* .plt call stub instructions. The normal stub is like this, but |
130 | sometimes the .plt entry crosses a 64k boundary and we need to | |
131 | insert an addis to adjust r12. */ | |
132 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
133 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
134 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
135 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
136 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
137 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
138 | /* ld %r11,xxx+16@l(%r12) */ | |
139 | #define BCTR 0x4e800420 /* bctr */ | |
140 | ||
5d1634d7 | 141 | |
ee4bf8d2 | 142 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ad8e1ba5 AM |
143 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
144 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
145 | ||
146 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
147 | ||
ee4bf8d2 | 148 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 149 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
150 | /* 0: */ |
151 | /* .quad plt0-1f */ | |
152 | /* __glink: */ | |
153 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
154 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
155 | /* 1: */ | |
156 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
157 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
158 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
159 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
160 | /* ld %11,0(%12) */ | |
161 | /* ld %2,8(%12) */ | |
162 | /* mtctr %11 */ | |
163 | /* ld %11,16(%12) */ | |
164 | /* bctr */ | |
5d1634d7 AM |
165 | |
166 | /* Pad with this. */ | |
167 | #define NOP 0x60000000 | |
168 | ||
721956f4 AM |
169 | /* Some other nops. */ |
170 | #define CROR_151515 0x4def7b82 | |
171 | #define CROR_313131 0x4ffffb82 | |
172 | ||
cedb70c5 | 173 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
174 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
175 | #define B_DOT 0x48000000 /* b . */ | |
176 | ||
177 | /* After that, we need two instructions to load the index, followed by | |
178 | a branch. */ | |
179 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 180 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 181 | |
deb0e272 AM |
182 | /* Instructions used by the save and restore reg functions. */ |
183 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
184 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
185 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
186 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
187 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
188 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
189 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
190 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
191 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
192 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
193 | #define BLR 0x4e800020 /* blr */ |
194 | ||
41bd81ab AM |
195 | /* Since .opd is an array of descriptors and each entry will end up |
196 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
197 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 198 | relocate .opd without reloc entries. */ |
41bd81ab AM |
199 | #ifndef NO_OPD_RELOCS |
200 | #define NO_OPD_RELOCS 0 | |
201 | #endif | |
5bd4f169 | 202 | \f |
f5e87a1d | 203 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 204 | |
5bd4f169 | 205 | /* Relocation HOWTO's. */ |
04c9666a | 206 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
207 | |
208 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
209 | /* This reloc does nothing. */ | |
210 | HOWTO (R_PPC64_NONE, /* type */ | |
211 | 0, /* rightshift */ | |
411e1bfb AM |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
213 | 32, /* bitsize */ | |
b34976b6 | 214 | FALSE, /* pc_relative */ |
5bd4f169 | 215 | 0, /* bitpos */ |
f5e87a1d | 216 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
217 | bfd_elf_generic_reloc, /* special_function */ |
218 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 219 | FALSE, /* partial_inplace */ |
d006db6c | 220 | 0, /* src_mask */ |
5bd4f169 | 221 | 0, /* dst_mask */ |
b34976b6 | 222 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
223 | |
224 | /* A standard 32 bit relocation. */ | |
225 | HOWTO (R_PPC64_ADDR32, /* type */ | |
226 | 0, /* rightshift */ | |
227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 32, /* bitsize */ | |
b34976b6 | 229 | FALSE, /* pc_relative */ |
5bd4f169 AM |
230 | 0, /* bitpos */ |
231 | complain_overflow_bitfield, /* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
233 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 234 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
235 | 0, /* src_mask */ |
236 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 237 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
238 | |
239 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
240 | FIXME: we don't check that, we just clear them. */ | |
241 | HOWTO (R_PPC64_ADDR24, /* type */ | |
242 | 0, /* rightshift */ | |
243 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
244 | 26, /* bitsize */ | |
b34976b6 | 245 | FALSE, /* pc_relative */ |
5bd4f169 AM |
246 | 0, /* bitpos */ |
247 | complain_overflow_bitfield, /* complain_on_overflow */ | |
248 | bfd_elf_generic_reloc, /* special_function */ | |
249 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 250 | FALSE, /* partial_inplace */ |
d006db6c | 251 | 0, /* src_mask */ |
f5e87a1d | 252 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 253 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
254 | |
255 | /* A standard 16 bit relocation. */ | |
256 | HOWTO (R_PPC64_ADDR16, /* type */ | |
257 | 0, /* rightshift */ | |
258 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
259 | 16, /* bitsize */ | |
b34976b6 | 260 | FALSE, /* pc_relative */ |
5bd4f169 AM |
261 | 0, /* bitpos */ |
262 | complain_overflow_bitfield, /* complain_on_overflow */ | |
263 | bfd_elf_generic_reloc, /* special_function */ | |
264 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 265 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
266 | 0, /* src_mask */ |
267 | 0xffff, /* dst_mask */ | |
b34976b6 | 268 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
269 | |
270 | /* A 16 bit relocation without overflow. */ | |
271 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
272 | 0, /* rightshift */ | |
273 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
274 | 16, /* bitsize */ | |
b34976b6 | 275 | FALSE, /* pc_relative */ |
5bd4f169 AM |
276 | 0, /* bitpos */ |
277 | complain_overflow_dont,/* complain_on_overflow */ | |
278 | bfd_elf_generic_reloc, /* special_function */ | |
279 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 280 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
281 | 0, /* src_mask */ |
282 | 0xffff, /* dst_mask */ | |
b34976b6 | 283 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
284 | |
285 | /* Bits 16-31 of an address. */ | |
286 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
287 | 16, /* rightshift */ | |
288 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
289 | 16, /* bitsize */ | |
b34976b6 | 290 | FALSE, /* pc_relative */ |
5bd4f169 AM |
291 | 0, /* bitpos */ |
292 | complain_overflow_dont, /* complain_on_overflow */ | |
293 | bfd_elf_generic_reloc, /* special_function */ | |
294 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 295 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
296 | 0, /* src_mask */ |
297 | 0xffff, /* dst_mask */ | |
b34976b6 | 298 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
299 | |
300 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
301 | bits, treated as a signed number, is negative. */ | |
302 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
303 | 16, /* rightshift */ | |
304 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
305 | 16, /* bitsize */ | |
b34976b6 | 306 | FALSE, /* pc_relative */ |
5bd4f169 AM |
307 | 0, /* bitpos */ |
308 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 309 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 310 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 311 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
312 | 0, /* src_mask */ |
313 | 0xffff, /* dst_mask */ | |
b34976b6 | 314 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
315 | |
316 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
317 | FIXME: we don't check that, we just clear them. */ | |
318 | HOWTO (R_PPC64_ADDR14, /* type */ | |
319 | 0, /* rightshift */ | |
320 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
321 | 16, /* bitsize */ | |
b34976b6 | 322 | FALSE, /* pc_relative */ |
5bd4f169 AM |
323 | 0, /* bitpos */ |
324 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 325 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 326 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 327 | FALSE, /* partial_inplace */ |
d006db6c | 328 | 0, /* src_mask */ |
f5e87a1d | 329 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 330 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
331 | |
332 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
333 | indicate that the branch is expected to be taken. The lower two | |
334 | bits must be zero. */ | |
335 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
336 | 0, /* rightshift */ | |
337 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
338 | 16, /* bitsize */ | |
b34976b6 | 339 | FALSE, /* pc_relative */ |
5bd4f169 AM |
340 | 0, /* bitpos */ |
341 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 342 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 343 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 344 | FALSE, /* partial_inplace */ |
d006db6c | 345 | 0, /* src_mask */ |
f5e87a1d | 346 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 347 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
348 | |
349 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
350 | indicate that the branch is not expected to be taken. The lower | |
351 | two bits must be zero. */ | |
352 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 16, /* bitsize */ | |
b34976b6 | 356 | FALSE, /* pc_relative */ |
5bd4f169 AM |
357 | 0, /* bitpos */ |
358 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 359 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 360 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 361 | FALSE, /* partial_inplace */ |
d006db6c | 362 | 0, /* src_mask */ |
f5e87a1d | 363 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 364 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
365 | |
366 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
367 | HOWTO (R_PPC64_REL24, /* type */ | |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 26, /* bitsize */ | |
b34976b6 | 371 | TRUE, /* pc_relative */ |
5bd4f169 AM |
372 | 0, /* bitpos */ |
373 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 374 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 375 | "R_PPC64_REL24", /* name */ |
b34976b6 | 376 | FALSE, /* partial_inplace */ |
d006db6c | 377 | 0, /* src_mask */ |
f5e87a1d | 378 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 379 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
380 | |
381 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
382 | HOWTO (R_PPC64_REL14, /* type */ | |
383 | 0, /* rightshift */ | |
384 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
385 | 16, /* bitsize */ | |
b34976b6 | 386 | TRUE, /* pc_relative */ |
5bd4f169 AM |
387 | 0, /* bitpos */ |
388 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 389 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 390 | "R_PPC64_REL14", /* name */ |
b34976b6 | 391 | FALSE, /* partial_inplace */ |
d006db6c | 392 | 0, /* src_mask */ |
f5e87a1d | 393 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 394 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
395 | |
396 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
397 | the branch is expected to be taken. The lower two bits must be | |
398 | zero. */ | |
399 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
400 | 0, /* rightshift */ | |
401 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
402 | 16, /* bitsize */ | |
b34976b6 | 403 | TRUE, /* pc_relative */ |
5bd4f169 AM |
404 | 0, /* bitpos */ |
405 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 406 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 407 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 408 | FALSE, /* partial_inplace */ |
d006db6c | 409 | 0, /* src_mask */ |
f5e87a1d | 410 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 411 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
412 | |
413 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
414 | the branch is not expected to be taken. The lower two bits must | |
415 | be zero. */ | |
416 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
417 | 0, /* rightshift */ | |
418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
419 | 16, /* bitsize */ | |
b34976b6 | 420 | TRUE, /* pc_relative */ |
5bd4f169 AM |
421 | 0, /* bitpos */ |
422 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 423 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 424 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 425 | FALSE, /* partial_inplace */ |
d006db6c | 426 | 0, /* src_mask */ |
f5e87a1d | 427 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 428 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
429 | |
430 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
431 | symbol. */ | |
432 | HOWTO (R_PPC64_GOT16, /* type */ | |
433 | 0, /* rightshift */ | |
434 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
435 | 16, /* bitsize */ | |
b34976b6 | 436 | FALSE, /* pc_relative */ |
5bd4f169 AM |
437 | 0, /* bitpos */ |
438 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 439 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 440 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 441 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
442 | 0, /* src_mask */ |
443 | 0xffff, /* dst_mask */ | |
b34976b6 | 444 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
445 | |
446 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
447 | the symbol. */ | |
448 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 16, /* bitsize */ | |
b34976b6 | 452 | FALSE, /* pc_relative */ |
5bd4f169 AM |
453 | 0, /* bitpos */ |
454 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 455 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 456 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 457 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
458 | 0, /* src_mask */ |
459 | 0xffff, /* dst_mask */ | |
b34976b6 | 460 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
461 | |
462 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
463 | the symbol. */ | |
464 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
465 | 16, /* rightshift */ | |
466 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
467 | 16, /* bitsize */ | |
b34976b6 | 468 | FALSE, /* pc_relative */ |
5bd4f169 AM |
469 | 0, /* bitpos */ |
470 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 471 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 472 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 473 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
474 | 0, /* src_mask */ |
475 | 0xffff, /* dst_mask */ | |
b34976b6 | 476 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
477 | |
478 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
479 | the symbol. */ | |
480 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
481 | 16, /* rightshift */ | |
482 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
483 | 16, /* bitsize */ | |
b34976b6 | 484 | FALSE, /* pc_relative */ |
5bd4f169 AM |
485 | 0, /* bitpos */ |
486 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 487 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 488 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 489 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
490 | 0, /* src_mask */ |
491 | 0xffff, /* dst_mask */ | |
b34976b6 | 492 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
493 | |
494 | /* This is used only by the dynamic linker. The symbol should exist | |
495 | both in the object being run and in some shared library. The | |
496 | dynamic linker copies the data addressed by the symbol from the | |
497 | shared library into the object, because the object being | |
498 | run has to have the data at some particular address. */ | |
499 | HOWTO (R_PPC64_COPY, /* type */ | |
500 | 0, /* rightshift */ | |
f5e87a1d AM |
501 | 0, /* this one is variable size */ |
502 | 0, /* bitsize */ | |
b34976b6 | 503 | FALSE, /* pc_relative */ |
5bd4f169 | 504 | 0, /* bitpos */ |
f5e87a1d AM |
505 | complain_overflow_dont, /* complain_on_overflow */ |
506 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 507 | "R_PPC64_COPY", /* name */ |
b34976b6 | 508 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
509 | 0, /* src_mask */ |
510 | 0, /* dst_mask */ | |
b34976b6 | 511 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
512 | |
513 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
514 | entries. */ | |
515 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
516 | 0, /* rightshift */ | |
517 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
518 | 64, /* bitsize */ | |
b34976b6 | 519 | FALSE, /* pc_relative */ |
5bd4f169 AM |
520 | 0, /* bitpos */ |
521 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 522 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 523 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 524 | FALSE, /* partial_inplace */ |
5bd4f169 | 525 | 0, /* src_mask */ |
f5e87a1d | 526 | ONES (64), /* dst_mask */ |
b34976b6 | 527 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
528 | |
529 | /* Created by the link editor. Marks a procedure linkage table | |
530 | entry for a symbol. */ | |
531 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
532 | 0, /* rightshift */ | |
533 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 0, /* bitsize */ | |
b34976b6 | 535 | FALSE, /* pc_relative */ |
5bd4f169 AM |
536 | 0, /* bitpos */ |
537 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 538 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 539 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 540 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
541 | 0, /* src_mask */ |
542 | 0, /* dst_mask */ | |
b34976b6 | 543 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
544 | |
545 | /* Used only by the dynamic linker. When the object is run, this | |
546 | doubleword64 is set to the load address of the object, plus the | |
547 | addend. */ | |
548 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
549 | 0, /* rightshift */ | |
550 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
551 | 64, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
5bd4f169 AM |
553 | 0, /* bitpos */ |
554 | complain_overflow_dont, /* complain_on_overflow */ | |
555 | bfd_elf_generic_reloc, /* special_function */ | |
556 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
5bd4f169 | 558 | 0, /* src_mask */ |
f5e87a1d | 559 | ONES (64), /* dst_mask */ |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
561 | |
562 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
563 | HOWTO (R_PPC64_UADDR32, /* type */ | |
564 | 0, /* rightshift */ | |
565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 32, /* bitsize */ | |
b34976b6 | 567 | FALSE, /* pc_relative */ |
5bd4f169 AM |
568 | 0, /* bitpos */ |
569 | complain_overflow_bitfield, /* complain_on_overflow */ | |
570 | bfd_elf_generic_reloc, /* special_function */ | |
571 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 572 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
573 | 0, /* src_mask */ |
574 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 575 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
576 | |
577 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
578 | HOWTO (R_PPC64_UADDR16, /* type */ | |
579 | 0, /* rightshift */ | |
580 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 16, /* bitsize */ | |
b34976b6 | 582 | FALSE, /* pc_relative */ |
5bd4f169 AM |
583 | 0, /* bitpos */ |
584 | complain_overflow_bitfield, /* complain_on_overflow */ | |
585 | bfd_elf_generic_reloc, /* special_function */ | |
586 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 587 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
588 | 0, /* src_mask */ |
589 | 0xffff, /* dst_mask */ | |
b34976b6 | 590 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
591 | |
592 | /* 32-bit PC relative. */ | |
593 | HOWTO (R_PPC64_REL32, /* type */ | |
594 | 0, /* rightshift */ | |
595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 32, /* bitsize */ | |
b34976b6 | 597 | TRUE, /* pc_relative */ |
5bd4f169 | 598 | 0, /* bitpos */ |
cedb70c5 | 599 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
600 | complain_overflow_signed, /* complain_on_overflow */ |
601 | bfd_elf_generic_reloc, /* special_function */ | |
602 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 603 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
604 | 0, /* src_mask */ |
605 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 606 | TRUE), /* pcrel_offset */ |
5bd4f169 | 607 | |
10ed1bba | 608 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
609 | HOWTO (R_PPC64_PLT32, /* type */ |
610 | 0, /* rightshift */ | |
611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
612 | 32, /* bitsize */ | |
b34976b6 | 613 | FALSE, /* pc_relative */ |
5bd4f169 AM |
614 | 0, /* bitpos */ |
615 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 616 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 617 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 618 | FALSE, /* partial_inplace */ |
5bd4f169 | 619 | 0, /* src_mask */ |
f5e87a1d | 620 | 0xffffffff, /* dst_mask */ |
b34976b6 | 621 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
622 | |
623 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
624 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
625 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
626 | 0, /* rightshift */ | |
627 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
628 | 32, /* bitsize */ | |
b34976b6 | 629 | TRUE, /* pc_relative */ |
5bd4f169 AM |
630 | 0, /* bitpos */ |
631 | complain_overflow_signed, /* complain_on_overflow */ | |
632 | bfd_elf_generic_reloc, /* special_function */ | |
633 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 634 | FALSE, /* partial_inplace */ |
5bd4f169 | 635 | 0, /* src_mask */ |
f5e87a1d | 636 | 0xffffffff, /* dst_mask */ |
b34976b6 | 637 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
638 | |
639 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
640 | the symbol. */ | |
641 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
642 | 0, /* rightshift */ | |
643 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
644 | 16, /* bitsize */ | |
b34976b6 | 645 | FALSE, /* pc_relative */ |
5bd4f169 AM |
646 | 0, /* bitpos */ |
647 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 648 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 649 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 650 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
651 | 0, /* src_mask */ |
652 | 0xffff, /* dst_mask */ | |
b34976b6 | 653 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
654 | |
655 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
656 | the symbol. */ | |
657 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
658 | 16, /* rightshift */ | |
659 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
660 | 16, /* bitsize */ | |
b34976b6 | 661 | FALSE, /* pc_relative */ |
5bd4f169 AM |
662 | 0, /* bitpos */ |
663 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 664 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 665 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 666 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
667 | 0, /* src_mask */ |
668 | 0xffff, /* dst_mask */ | |
b34976b6 | 669 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
670 | |
671 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
672 | the symbol. */ | |
673 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
674 | 16, /* rightshift */ | |
675 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
676 | 16, /* bitsize */ | |
b34976b6 | 677 | FALSE, /* pc_relative */ |
5bd4f169 AM |
678 | 0, /* bitpos */ |
679 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 680 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 681 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 682 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
683 | 0, /* src_mask */ |
684 | 0xffff, /* dst_mask */ | |
b34976b6 | 685 | FALSE), /* pcrel_offset */ |
5bd4f169 | 686 | |
c061c2d8 | 687 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
688 | HOWTO (R_PPC64_SECTOFF, /* type */ |
689 | 0, /* rightshift */ | |
c061c2d8 AM |
690 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
691 | 16, /* bitsize */ | |
b34976b6 | 692 | FALSE, /* pc_relative */ |
5bd4f169 AM |
693 | 0, /* bitpos */ |
694 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 695 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 696 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 697 | FALSE, /* partial_inplace */ |
5bd4f169 | 698 | 0, /* src_mask */ |
c061c2d8 | 699 | 0xffff, /* dst_mask */ |
b34976b6 | 700 | FALSE), /* pcrel_offset */ |
5bd4f169 | 701 | |
c061c2d8 | 702 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
703 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
704 | 0, /* rightshift */ | |
705 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
706 | 16, /* bitsize */ | |
b34976b6 | 707 | FALSE, /* pc_relative */ |
5bd4f169 AM |
708 | 0, /* bitpos */ |
709 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 710 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 711 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 712 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
713 | 0, /* src_mask */ |
714 | 0xffff, /* dst_mask */ | |
b34976b6 | 715 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
716 | |
717 | /* 16-bit upper half section relative relocation. */ | |
718 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
719 | 16, /* rightshift */ | |
720 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
721 | 16, /* bitsize */ | |
b34976b6 | 722 | FALSE, /* pc_relative */ |
5bd4f169 AM |
723 | 0, /* bitpos */ |
724 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 725 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 726 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 727 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
728 | 0, /* src_mask */ |
729 | 0xffff, /* dst_mask */ | |
b34976b6 | 730 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
731 | |
732 | /* 16-bit upper half adjusted section relative relocation. */ | |
733 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
734 | 16, /* rightshift */ | |
735 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
736 | 16, /* bitsize */ | |
b34976b6 | 737 | FALSE, /* pc_relative */ |
5bd4f169 AM |
738 | 0, /* bitpos */ |
739 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 740 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 741 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 742 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
743 | 0, /* src_mask */ |
744 | 0xffff, /* dst_mask */ | |
b34976b6 | 745 | FALSE), /* pcrel_offset */ |
5bd4f169 | 746 | |
04c9666a AM |
747 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
748 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
749 | 2, /* rightshift */ |
750 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
751 | 30, /* bitsize */ | |
b34976b6 | 752 | TRUE, /* pc_relative */ |
5bd4f169 AM |
753 | 0, /* bitpos */ |
754 | complain_overflow_dont, /* complain_on_overflow */ | |
755 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 756 | "R_PPC64_REL30", /* name */ |
b34976b6 | 757 | FALSE, /* partial_inplace */ |
d006db6c | 758 | 0, /* src_mask */ |
5bd4f169 | 759 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 760 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
761 | |
762 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
763 | ||
764 | /* A standard 64-bit relocation. */ | |
765 | HOWTO (R_PPC64_ADDR64, /* type */ | |
766 | 0, /* rightshift */ | |
767 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
768 | 64, /* bitsize */ | |
b34976b6 | 769 | FALSE, /* pc_relative */ |
5bd4f169 AM |
770 | 0, /* bitpos */ |
771 | complain_overflow_dont, /* complain_on_overflow */ | |
772 | bfd_elf_generic_reloc, /* special_function */ | |
773 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 774 | FALSE, /* partial_inplace */ |
5bd4f169 | 775 | 0, /* src_mask */ |
f5e87a1d | 776 | ONES (64), /* dst_mask */ |
b34976b6 | 777 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
778 | |
779 | /* The bits 32-47 of an address. */ | |
780 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
781 | 32, /* rightshift */ | |
782 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
783 | 16, /* bitsize */ | |
b34976b6 | 784 | FALSE, /* pc_relative */ |
5bd4f169 AM |
785 | 0, /* bitpos */ |
786 | complain_overflow_dont, /* complain_on_overflow */ | |
787 | bfd_elf_generic_reloc, /* special_function */ | |
788 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 789 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
790 | 0, /* src_mask */ |
791 | 0xffff, /* dst_mask */ | |
b34976b6 | 792 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
793 | |
794 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
795 | 16 bits, treated as a signed number, is negative. */ | |
796 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
797 | 32, /* rightshift */ | |
798 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
799 | 16, /* bitsize */ | |
b34976b6 | 800 | FALSE, /* pc_relative */ |
5bd4f169 AM |
801 | 0, /* bitpos */ |
802 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 803 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 804 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 805 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
806 | 0, /* src_mask */ |
807 | 0xffff, /* dst_mask */ | |
b34976b6 | 808 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
809 | |
810 | /* The bits 48-63 of an address. */ | |
811 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
812 | 48, /* rightshift */ | |
813 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
814 | 16, /* bitsize */ | |
b34976b6 | 815 | FALSE, /* pc_relative */ |
5bd4f169 AM |
816 | 0, /* bitpos */ |
817 | complain_overflow_dont, /* complain_on_overflow */ | |
818 | bfd_elf_generic_reloc, /* special_function */ | |
819 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 820 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
821 | 0, /* src_mask */ |
822 | 0xffff, /* dst_mask */ | |
b34976b6 | 823 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
824 | |
825 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
826 | 16 bits, treated as a signed number, is negative. */ | |
827 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
828 | 48, /* rightshift */ | |
829 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
830 | 16, /* bitsize */ | |
b34976b6 | 831 | FALSE, /* pc_relative */ |
5bd4f169 AM |
832 | 0, /* bitpos */ |
833 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 834 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 835 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 836 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
837 | 0, /* src_mask */ |
838 | 0xffff, /* dst_mask */ | |
b34976b6 | 839 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
840 | |
841 | /* Like ADDR64, but may be unaligned. */ | |
842 | HOWTO (R_PPC64_UADDR64, /* type */ | |
843 | 0, /* rightshift */ | |
844 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
845 | 64, /* bitsize */ | |
b34976b6 | 846 | FALSE, /* pc_relative */ |
5bd4f169 AM |
847 | 0, /* bitpos */ |
848 | complain_overflow_dont, /* complain_on_overflow */ | |
849 | bfd_elf_generic_reloc, /* special_function */ | |
850 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 851 | FALSE, /* partial_inplace */ |
5bd4f169 | 852 | 0, /* src_mask */ |
f5e87a1d | 853 | ONES (64), /* dst_mask */ |
b34976b6 | 854 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
855 | |
856 | /* 64-bit relative relocation. */ | |
857 | HOWTO (R_PPC64_REL64, /* type */ | |
858 | 0, /* rightshift */ | |
859 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
860 | 64, /* bitsize */ | |
b34976b6 | 861 | TRUE, /* pc_relative */ |
5bd4f169 AM |
862 | 0, /* bitpos */ |
863 | complain_overflow_dont, /* complain_on_overflow */ | |
864 | bfd_elf_generic_reloc, /* special_function */ | |
865 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 866 | FALSE, /* partial_inplace */ |
5bd4f169 | 867 | 0, /* src_mask */ |
f5e87a1d | 868 | ONES (64), /* dst_mask */ |
b34976b6 | 869 | TRUE), /* pcrel_offset */ |
5bd4f169 | 870 | |
cedb70c5 | 871 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
872 | HOWTO (R_PPC64_PLT64, /* type */ |
873 | 0, /* rightshift */ | |
874 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
875 | 64, /* bitsize */ | |
b34976b6 | 876 | FALSE, /* pc_relative */ |
5bd4f169 AM |
877 | 0, /* bitpos */ |
878 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 879 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 880 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 881 | FALSE, /* partial_inplace */ |
5bd4f169 | 882 | 0, /* src_mask */ |
f5e87a1d | 883 | ONES (64), /* dst_mask */ |
b34976b6 | 884 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
885 | |
886 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
887 | table. */ | |
888 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
889 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
890 | 0, /* rightshift */ | |
891 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
892 | 64, /* bitsize */ | |
b34976b6 | 893 | TRUE, /* pc_relative */ |
5bd4f169 AM |
894 | 0, /* bitpos */ |
895 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 896 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 897 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 898 | FALSE, /* partial_inplace */ |
5bd4f169 | 899 | 0, /* src_mask */ |
f5e87a1d | 900 | ONES (64), /* dst_mask */ |
b34976b6 | 901 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
902 | |
903 | /* 16 bit TOC-relative relocation. */ | |
904 | ||
905 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
906 | HOWTO (R_PPC64_TOC16, /* type */ | |
907 | 0, /* rightshift */ | |
908 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
909 | 16, /* bitsize */ | |
b34976b6 | 910 | FALSE, /* pc_relative */ |
5bd4f169 AM |
911 | 0, /* bitpos */ |
912 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 913 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 914 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 915 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
916 | 0, /* src_mask */ |
917 | 0xffff, /* dst_mask */ | |
b34976b6 | 918 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
919 | |
920 | /* 16 bit TOC-relative relocation without overflow. */ | |
921 | ||
922 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
923 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
924 | 0, /* rightshift */ | |
925 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
926 | 16, /* bitsize */ | |
b34976b6 | 927 | FALSE, /* pc_relative */ |
5bd4f169 AM |
928 | 0, /* bitpos */ |
929 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 930 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 931 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 932 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
933 | 0, /* src_mask */ |
934 | 0xffff, /* dst_mask */ | |
b34976b6 | 935 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
936 | |
937 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
938 | ||
939 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
940 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
941 | 16, /* rightshift */ | |
942 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
943 | 16, /* bitsize */ | |
b34976b6 | 944 | FALSE, /* pc_relative */ |
5bd4f169 AM |
945 | 0, /* bitpos */ |
946 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 947 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 948 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 949 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
950 | 0, /* src_mask */ |
951 | 0xffff, /* dst_mask */ | |
b34976b6 | 952 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
953 | |
954 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
955 | contents of the low 16 bits, treated as a signed number, is | |
956 | negative. */ | |
957 | ||
958 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
959 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
960 | 16, /* rightshift */ | |
961 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
962 | 16, /* bitsize */ | |
b34976b6 | 963 | FALSE, /* pc_relative */ |
5bd4f169 AM |
964 | 0, /* bitpos */ |
965 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 966 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 967 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 968 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
969 | 0, /* src_mask */ |
970 | 0xffff, /* dst_mask */ | |
b34976b6 | 971 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
972 | |
973 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
974 | ||
975 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
976 | HOWTO (R_PPC64_TOC, /* type */ | |
977 | 0, /* rightshift */ | |
978 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
979 | 64, /* bitsize */ | |
b34976b6 | 980 | FALSE, /* pc_relative */ |
5bd4f169 AM |
981 | 0, /* bitpos */ |
982 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 983 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 984 | "R_PPC64_TOC", /* name */ |
b34976b6 | 985 | FALSE, /* partial_inplace */ |
5bd4f169 | 986 | 0, /* src_mask */ |
f5e87a1d | 987 | ONES (64), /* dst_mask */ |
b34976b6 | 988 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
989 | |
990 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
991 | value to relocate may (!) refer to a PLT entry which the link | |
992 | editor (a) may replace with the symbol value. If the link editor | |
993 | is unable to fully resolve the symbol, it may (b) create a PLT | |
994 | entry and store the address to the new PLT entry in the GOT. | |
995 | This permits lazy resolution of function symbols at run time. | |
996 | The link editor may also skip all of this and just (c) emit a | |
997 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
998 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
999 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1000 | 0, /* rightshift */ | |
1001 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1002 | 16, /* bitsize */ | |
b34976b6 | 1003 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1004 | 0, /* bitpos */ |
1005 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1006 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1007 | "R_PPC64_PLTGOT16", /* name */ |
1008 | FALSE, /* partial_inplace */ | |
1009 | 0, /* src_mask */ | |
1010 | 0xffff, /* dst_mask */ | |
1011 | FALSE), /* pcrel_offset */ | |
1012 | ||
1013 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1014 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1015 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1016 | 0, /* rightshift */ | |
1017 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1018 | 16, /* bitsize */ | |
1019 | FALSE, /* pc_relative */ | |
1020 | 0, /* bitpos */ | |
1021 | complain_overflow_dont, /* complain_on_overflow */ | |
1022 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1023 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1024 | FALSE, /* partial_inplace */ | |
1025 | 0, /* src_mask */ | |
1026 | 0xffff, /* dst_mask */ | |
1027 | FALSE), /* pcrel_offset */ | |
1028 | ||
1029 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1030 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1031 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1032 | 16, /* rightshift */ | |
1033 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1034 | 16, /* bitsize */ | |
1035 | FALSE, /* pc_relative */ | |
1036 | 0, /* bitpos */ | |
1037 | complain_overflow_dont, /* complain_on_overflow */ | |
1038 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1039 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1040 | FALSE, /* partial_inplace */ | |
1041 | 0, /* src_mask */ | |
1042 | 0xffff, /* dst_mask */ | |
1043 | FALSE), /* pcrel_offset */ | |
1044 | ||
1045 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1046 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1047 | is negative. */ | |
1048 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1049 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1050 | 16, /* rightshift */ | |
1051 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1052 | 16, /* bitsize */ | |
1053 | FALSE, /* pc_relative */ | |
1054 | 0, /* bitpos */ | |
1055 | complain_overflow_dont,/* complain_on_overflow */ | |
1056 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1057 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1058 | FALSE, /* partial_inplace */ | |
1059 | 0, /* src_mask */ | |
1060 | 0xffff, /* dst_mask */ | |
1061 | FALSE), /* pcrel_offset */ | |
1062 | ||
1063 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1064 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1065 | 0, /* rightshift */ | |
1066 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1067 | 16, /* bitsize */ | |
1068 | FALSE, /* pc_relative */ | |
1069 | 0, /* bitpos */ | |
1070 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1071 | bfd_elf_generic_reloc, /* special_function */ | |
1072 | "R_PPC64_ADDR16_DS", /* name */ | |
1073 | FALSE, /* partial_inplace */ | |
1074 | 0, /* src_mask */ | |
1075 | 0xfffc, /* dst_mask */ | |
1076 | FALSE), /* pcrel_offset */ | |
1077 | ||
1078 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1079 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1080 | 0, /* rightshift */ | |
1081 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1082 | 16, /* bitsize */ | |
1083 | FALSE, /* pc_relative */ | |
1084 | 0, /* bitpos */ | |
1085 | complain_overflow_dont,/* complain_on_overflow */ | |
1086 | bfd_elf_generic_reloc, /* special_function */ | |
1087 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1088 | FALSE, /* partial_inplace */ | |
1089 | 0, /* src_mask */ | |
1090 | 0xfffc, /* dst_mask */ | |
1091 | FALSE), /* pcrel_offset */ | |
1092 | ||
1093 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1094 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1095 | 0, /* rightshift */ | |
1096 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1097 | 16, /* bitsize */ | |
1098 | FALSE, /* pc_relative */ | |
1099 | 0, /* bitpos */ | |
1100 | complain_overflow_signed, /* complain_on_overflow */ | |
1101 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1102 | "R_PPC64_GOT16_DS", /* name */ | |
1103 | FALSE, /* partial_inplace */ | |
1104 | 0, /* src_mask */ | |
1105 | 0xfffc, /* dst_mask */ | |
1106 | FALSE), /* pcrel_offset */ | |
1107 | ||
1108 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1109 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1110 | 0, /* rightshift */ | |
1111 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1112 | 16, /* bitsize */ | |
1113 | FALSE, /* pc_relative */ | |
1114 | 0, /* bitpos */ | |
1115 | complain_overflow_dont, /* complain_on_overflow */ | |
1116 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1117 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1118 | FALSE, /* partial_inplace */ | |
1119 | 0, /* src_mask */ | |
1120 | 0xfffc, /* dst_mask */ | |
1121 | FALSE), /* pcrel_offset */ | |
1122 | ||
1123 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1124 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1125 | 0, /* rightshift */ | |
1126 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1127 | 16, /* bitsize */ | |
1128 | FALSE, /* pc_relative */ | |
1129 | 0, /* bitpos */ | |
1130 | complain_overflow_dont, /* complain_on_overflow */ | |
1131 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1132 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1133 | FALSE, /* partial_inplace */ | |
1134 | 0, /* src_mask */ | |
1135 | 0xfffc, /* dst_mask */ | |
1136 | FALSE), /* pcrel_offset */ | |
1137 | ||
1138 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1139 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1140 | 0, /* rightshift */ | |
1141 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1142 | 16, /* bitsize */ | |
1143 | FALSE, /* pc_relative */ | |
1144 | 0, /* bitpos */ | |
1145 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1146 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1147 | "R_PPC64_SECTOFF_DS", /* name */ | |
1148 | FALSE, /* partial_inplace */ | |
1149 | 0, /* src_mask */ | |
1150 | 0xfffc, /* dst_mask */ | |
1151 | FALSE), /* pcrel_offset */ | |
1152 | ||
1153 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1154 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1155 | 0, /* rightshift */ | |
1156 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1157 | 16, /* bitsize */ | |
1158 | FALSE, /* pc_relative */ | |
1159 | 0, /* bitpos */ | |
1160 | complain_overflow_dont, /* complain_on_overflow */ | |
1161 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1162 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1163 | FALSE, /* partial_inplace */ | |
1164 | 0, /* src_mask */ | |
1165 | 0xfffc, /* dst_mask */ | |
1166 | FALSE), /* pcrel_offset */ | |
1167 | ||
1168 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1169 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1170 | 0, /* rightshift */ | |
1171 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1172 | 16, /* bitsize */ | |
1173 | FALSE, /* pc_relative */ | |
1174 | 0, /* bitpos */ | |
1175 | complain_overflow_signed, /* complain_on_overflow */ | |
1176 | ppc64_elf_toc_reloc, /* special_function */ | |
1177 | "R_PPC64_TOC16_DS", /* name */ | |
1178 | FALSE, /* partial_inplace */ | |
1179 | 0, /* src_mask */ | |
1180 | 0xfffc, /* dst_mask */ | |
1181 | FALSE), /* pcrel_offset */ | |
1182 | ||
1183 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1184 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1185 | 0, /* rightshift */ | |
1186 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1187 | 16, /* bitsize */ | |
1188 | FALSE, /* pc_relative */ | |
1189 | 0, /* bitpos */ | |
1190 | complain_overflow_dont, /* complain_on_overflow */ | |
1191 | ppc64_elf_toc_reloc, /* special_function */ | |
1192 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1193 | FALSE, /* partial_inplace */ | |
1194 | 0, /* src_mask */ | |
1195 | 0xfffc, /* dst_mask */ | |
1196 | FALSE), /* pcrel_offset */ | |
1197 | ||
1198 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1199 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1200 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1201 | 0, /* rightshift */ | |
1202 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1203 | 16, /* bitsize */ | |
1204 | FALSE, /* pc_relative */ | |
1205 | 0, /* bitpos */ | |
1206 | complain_overflow_signed, /* complain_on_overflow */ | |
1207 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1208 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1209 | FALSE, /* partial_inplace */ | |
1210 | 0, /* src_mask */ | |
1211 | 0xfffc, /* dst_mask */ | |
1212 | FALSE), /* pcrel_offset */ | |
1213 | ||
1214 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1215 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1216 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1217 | 0, /* rightshift */ | |
1218 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1219 | 16, /* bitsize */ | |
1220 | FALSE, /* pc_relative */ | |
1221 | 0, /* bitpos */ | |
1222 | complain_overflow_dont, /* complain_on_overflow */ | |
1223 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1224 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1225 | FALSE, /* partial_inplace */ | |
1226 | 0, /* src_mask */ | |
1227 | 0xfffc, /* dst_mask */ | |
1228 | FALSE), /* pcrel_offset */ | |
1229 | ||
1230 | /* Marker reloc for TLS. */ | |
1231 | HOWTO (R_PPC64_TLS, | |
1232 | 0, /* rightshift */ | |
1233 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1234 | 32, /* bitsize */ | |
1235 | FALSE, /* pc_relative */ | |
1236 | 0, /* bitpos */ | |
1237 | complain_overflow_dont, /* complain_on_overflow */ | |
1238 | bfd_elf_generic_reloc, /* special_function */ | |
1239 | "R_PPC64_TLS", /* name */ | |
1240 | FALSE, /* partial_inplace */ | |
1241 | 0, /* src_mask */ | |
1242 | 0, /* dst_mask */ | |
1243 | FALSE), /* pcrel_offset */ | |
1244 | ||
1245 | /* Computes the load module index of the load module that contains the | |
1246 | definition of its TLS sym. */ | |
1247 | HOWTO (R_PPC64_DTPMOD64, | |
1248 | 0, /* rightshift */ | |
1249 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1250 | 64, /* bitsize */ | |
1251 | FALSE, /* pc_relative */ | |
1252 | 0, /* bitpos */ | |
1253 | complain_overflow_dont, /* complain_on_overflow */ | |
1254 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1255 | "R_PPC64_DTPMOD64", /* name */ | |
1256 | FALSE, /* partial_inplace */ | |
1257 | 0, /* src_mask */ | |
1258 | ONES (64), /* dst_mask */ | |
1259 | FALSE), /* pcrel_offset */ | |
1260 | ||
1261 | /* Computes a dtv-relative displacement, the difference between the value | |
1262 | of sym+add and the base address of the thread-local storage block that | |
1263 | contains the definition of sym, minus 0x8000. */ | |
1264 | HOWTO (R_PPC64_DTPREL64, | |
1265 | 0, /* rightshift */ | |
1266 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1267 | 64, /* bitsize */ | |
1268 | FALSE, /* pc_relative */ | |
1269 | 0, /* bitpos */ | |
1270 | complain_overflow_dont, /* complain_on_overflow */ | |
1271 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1272 | "R_PPC64_DTPREL64", /* name */ | |
1273 | FALSE, /* partial_inplace */ | |
1274 | 0, /* src_mask */ | |
1275 | ONES (64), /* dst_mask */ | |
1276 | FALSE), /* pcrel_offset */ | |
1277 | ||
1278 | /* A 16 bit dtprel reloc. */ | |
1279 | HOWTO (R_PPC64_DTPREL16, | |
1280 | 0, /* rightshift */ | |
1281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1282 | 16, /* bitsize */ | |
1283 | FALSE, /* pc_relative */ | |
1284 | 0, /* bitpos */ | |
1285 | complain_overflow_signed, /* complain_on_overflow */ | |
1286 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1287 | "R_PPC64_DTPREL16", /* name */ | |
1288 | FALSE, /* partial_inplace */ | |
1289 | 0, /* src_mask */ | |
1290 | 0xffff, /* dst_mask */ | |
1291 | FALSE), /* pcrel_offset */ | |
1292 | ||
1293 | /* Like DTPREL16, but no overflow. */ | |
1294 | HOWTO (R_PPC64_DTPREL16_LO, | |
1295 | 0, /* rightshift */ | |
1296 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1297 | 16, /* bitsize */ | |
1298 | FALSE, /* pc_relative */ | |
1299 | 0, /* bitpos */ | |
1300 | complain_overflow_dont, /* complain_on_overflow */ | |
1301 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1302 | "R_PPC64_DTPREL16_LO", /* name */ | |
1303 | FALSE, /* partial_inplace */ | |
1304 | 0, /* src_mask */ | |
1305 | 0xffff, /* dst_mask */ | |
1306 | FALSE), /* pcrel_offset */ | |
1307 | ||
1308 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1309 | HOWTO (R_PPC64_DTPREL16_HI, | |
1310 | 16, /* rightshift */ | |
1311 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1312 | 16, /* bitsize */ | |
1313 | FALSE, /* pc_relative */ | |
1314 | 0, /* bitpos */ | |
1315 | complain_overflow_dont, /* complain_on_overflow */ | |
1316 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1317 | "R_PPC64_DTPREL16_HI", /* name */ | |
1318 | FALSE, /* partial_inplace */ | |
1319 | 0, /* src_mask */ | |
1320 | 0xffff, /* dst_mask */ | |
1321 | FALSE), /* pcrel_offset */ | |
1322 | ||
1323 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1324 | HOWTO (R_PPC64_DTPREL16_HA, | |
1325 | 16, /* rightshift */ | |
1326 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1327 | 16, /* bitsize */ | |
1328 | FALSE, /* pc_relative */ | |
1329 | 0, /* bitpos */ | |
1330 | complain_overflow_dont, /* complain_on_overflow */ | |
1331 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1332 | "R_PPC64_DTPREL16_HA", /* name */ | |
1333 | FALSE, /* partial_inplace */ | |
1334 | 0, /* src_mask */ | |
1335 | 0xffff, /* dst_mask */ | |
1336 | FALSE), /* pcrel_offset */ | |
1337 | ||
1338 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1339 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1340 | 32, /* rightshift */ | |
1341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1342 | 16, /* bitsize */ | |
1343 | FALSE, /* pc_relative */ | |
1344 | 0, /* bitpos */ | |
1345 | complain_overflow_dont, /* complain_on_overflow */ | |
1346 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1347 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1348 | FALSE, /* partial_inplace */ | |
1349 | 0, /* src_mask */ | |
1350 | 0xffff, /* dst_mask */ | |
1351 | FALSE), /* pcrel_offset */ | |
1352 | ||
1353 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1354 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1355 | 32, /* rightshift */ | |
1356 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 16, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
1359 | 0, /* bitpos */ | |
1360 | complain_overflow_dont, /* complain_on_overflow */ | |
1361 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1362 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1363 | FALSE, /* partial_inplace */ | |
1364 | 0, /* src_mask */ | |
1365 | 0xffff, /* dst_mask */ | |
1366 | FALSE), /* pcrel_offset */ | |
1367 | ||
1368 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1369 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1370 | 48, /* rightshift */ | |
1371 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 16, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
1374 | 0, /* bitpos */ | |
1375 | complain_overflow_dont, /* complain_on_overflow */ | |
1376 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1377 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0, /* src_mask */ | |
1380 | 0xffff, /* dst_mask */ | |
1381 | FALSE), /* pcrel_offset */ | |
1382 | ||
1383 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1384 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1385 | 48, /* rightshift */ | |
1386 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1387 | 16, /* bitsize */ | |
1388 | FALSE, /* pc_relative */ | |
1389 | 0, /* bitpos */ | |
1390 | complain_overflow_dont, /* complain_on_overflow */ | |
1391 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1392 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1393 | FALSE, /* partial_inplace */ | |
1394 | 0, /* src_mask */ | |
1395 | 0xffff, /* dst_mask */ | |
1396 | FALSE), /* pcrel_offset */ | |
1397 | ||
1398 | /* Like DTPREL16, but for insns with a DS field. */ | |
1399 | HOWTO (R_PPC64_DTPREL16_DS, | |
1400 | 0, /* rightshift */ | |
1401 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1402 | 16, /* bitsize */ | |
1403 | FALSE, /* pc_relative */ | |
1404 | 0, /* bitpos */ | |
1405 | complain_overflow_signed, /* complain_on_overflow */ | |
1406 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1407 | "R_PPC64_DTPREL16_DS", /* name */ | |
1408 | FALSE, /* partial_inplace */ | |
1409 | 0, /* src_mask */ | |
1410 | 0xfffc, /* dst_mask */ | |
1411 | FALSE), /* pcrel_offset */ | |
1412 | ||
1413 | /* Like DTPREL16_DS, but no overflow. */ | |
1414 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1415 | 0, /* rightshift */ | |
1416 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1417 | 16, /* bitsize */ | |
1418 | FALSE, /* pc_relative */ | |
1419 | 0, /* bitpos */ | |
1420 | complain_overflow_dont, /* complain_on_overflow */ | |
1421 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1422 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1423 | FALSE, /* partial_inplace */ | |
1424 | 0, /* src_mask */ | |
1425 | 0xfffc, /* dst_mask */ | |
1426 | FALSE), /* pcrel_offset */ | |
1427 | ||
1428 | /* Computes a tp-relative displacement, the difference between the value of | |
1429 | sym+add and the value of the thread pointer (r13). */ | |
1430 | HOWTO (R_PPC64_TPREL64, | |
1431 | 0, /* rightshift */ | |
1432 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1433 | 64, /* bitsize */ | |
1434 | FALSE, /* pc_relative */ | |
1435 | 0, /* bitpos */ | |
1436 | complain_overflow_dont, /* complain_on_overflow */ | |
1437 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1438 | "R_PPC64_TPREL64", /* name */ | |
1439 | FALSE, /* partial_inplace */ | |
1440 | 0, /* src_mask */ | |
1441 | ONES (64), /* dst_mask */ | |
1442 | FALSE), /* pcrel_offset */ | |
1443 | ||
1444 | /* A 16 bit tprel reloc. */ | |
1445 | HOWTO (R_PPC64_TPREL16, | |
1446 | 0, /* rightshift */ | |
1447 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1448 | 16, /* bitsize */ | |
1449 | FALSE, /* pc_relative */ | |
1450 | 0, /* bitpos */ | |
1451 | complain_overflow_signed, /* complain_on_overflow */ | |
1452 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1453 | "R_PPC64_TPREL16", /* name */ | |
1454 | FALSE, /* partial_inplace */ | |
1455 | 0, /* src_mask */ | |
1456 | 0xffff, /* dst_mask */ | |
1457 | FALSE), /* pcrel_offset */ | |
1458 | ||
1459 | /* Like TPREL16, but no overflow. */ | |
1460 | HOWTO (R_PPC64_TPREL16_LO, | |
1461 | 0, /* rightshift */ | |
1462 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1463 | 16, /* bitsize */ | |
1464 | FALSE, /* pc_relative */ | |
1465 | 0, /* bitpos */ | |
1466 | complain_overflow_dont, /* complain_on_overflow */ | |
1467 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1468 | "R_PPC64_TPREL16_LO", /* name */ | |
1469 | FALSE, /* partial_inplace */ | |
1470 | 0, /* src_mask */ | |
1471 | 0xffff, /* dst_mask */ | |
1472 | FALSE), /* pcrel_offset */ | |
1473 | ||
1474 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1475 | HOWTO (R_PPC64_TPREL16_HI, | |
1476 | 16, /* rightshift */ | |
1477 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1478 | 16, /* bitsize */ | |
1479 | FALSE, /* pc_relative */ | |
1480 | 0, /* bitpos */ | |
1481 | complain_overflow_dont, /* complain_on_overflow */ | |
1482 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1483 | "R_PPC64_TPREL16_HI", /* name */ | |
1484 | FALSE, /* partial_inplace */ | |
1485 | 0, /* src_mask */ | |
1486 | 0xffff, /* dst_mask */ | |
1487 | FALSE), /* pcrel_offset */ | |
1488 | ||
1489 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1490 | HOWTO (R_PPC64_TPREL16_HA, | |
1491 | 16, /* rightshift */ | |
1492 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1493 | 16, /* bitsize */ | |
1494 | FALSE, /* pc_relative */ | |
1495 | 0, /* bitpos */ | |
1496 | complain_overflow_dont, /* complain_on_overflow */ | |
1497 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1498 | "R_PPC64_TPREL16_HA", /* name */ | |
1499 | FALSE, /* partial_inplace */ | |
1500 | 0, /* src_mask */ | |
1501 | 0xffff, /* dst_mask */ | |
1502 | FALSE), /* pcrel_offset */ | |
1503 | ||
1504 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1505 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1506 | 32, /* rightshift */ | |
1507 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1508 | 16, /* bitsize */ | |
1509 | FALSE, /* pc_relative */ | |
1510 | 0, /* bitpos */ | |
1511 | complain_overflow_dont, /* complain_on_overflow */ | |
1512 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1513 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1514 | FALSE, /* partial_inplace */ | |
1515 | 0, /* src_mask */ | |
1516 | 0xffff, /* dst_mask */ | |
1517 | FALSE), /* pcrel_offset */ | |
1518 | ||
1519 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1520 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1521 | 32, /* rightshift */ | |
1522 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1523 | 16, /* bitsize */ | |
1524 | FALSE, /* pc_relative */ | |
1525 | 0, /* bitpos */ | |
1526 | complain_overflow_dont, /* complain_on_overflow */ | |
1527 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1528 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1529 | FALSE, /* partial_inplace */ | |
1530 | 0, /* src_mask */ | |
1531 | 0xffff, /* dst_mask */ | |
1532 | FALSE), /* pcrel_offset */ | |
1533 | ||
1534 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1535 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1536 | 48, /* rightshift */ | |
1537 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1538 | 16, /* bitsize */ | |
1539 | FALSE, /* pc_relative */ | |
1540 | 0, /* bitpos */ | |
1541 | complain_overflow_dont, /* complain_on_overflow */ | |
1542 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1543 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1544 | FALSE, /* partial_inplace */ | |
1545 | 0, /* src_mask */ | |
1546 | 0xffff, /* dst_mask */ | |
1547 | FALSE), /* pcrel_offset */ | |
1548 | ||
1549 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1550 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1551 | 48, /* rightshift */ | |
1552 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1553 | 16, /* bitsize */ | |
1554 | FALSE, /* pc_relative */ | |
1555 | 0, /* bitpos */ | |
1556 | complain_overflow_dont, /* complain_on_overflow */ | |
1557 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1558 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1559 | FALSE, /* partial_inplace */ | |
1560 | 0, /* src_mask */ | |
1561 | 0xffff, /* dst_mask */ | |
1562 | FALSE), /* pcrel_offset */ | |
1563 | ||
1564 | /* Like TPREL16, but for insns with a DS field. */ | |
1565 | HOWTO (R_PPC64_TPREL16_DS, | |
1566 | 0, /* rightshift */ | |
1567 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1568 | 16, /* bitsize */ | |
1569 | FALSE, /* pc_relative */ | |
1570 | 0, /* bitpos */ | |
1571 | complain_overflow_signed, /* complain_on_overflow */ | |
1572 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1573 | "R_PPC64_TPREL16_DS", /* name */ | |
1574 | FALSE, /* partial_inplace */ | |
1575 | 0, /* src_mask */ | |
1576 | 0xfffc, /* dst_mask */ | |
1577 | FALSE), /* pcrel_offset */ | |
1578 | ||
1579 | /* Like TPREL16_DS, but no overflow. */ | |
1580 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1581 | 0, /* rightshift */ | |
1582 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1583 | 16, /* bitsize */ | |
1584 | FALSE, /* pc_relative */ | |
1585 | 0, /* bitpos */ | |
1586 | complain_overflow_dont, /* complain_on_overflow */ | |
1587 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1588 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1589 | FALSE, /* partial_inplace */ | |
1590 | 0, /* src_mask */ | |
1591 | 0xfffc, /* dst_mask */ | |
1592 | FALSE), /* pcrel_offset */ | |
1593 | ||
1594 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1595 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1596 | to the first entry relative to the TOC base (r2). */ | |
1597 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1598 | 0, /* rightshift */ | |
1599 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1600 | 16, /* bitsize */ | |
1601 | FALSE, /* pc_relative */ | |
1602 | 0, /* bitpos */ | |
1603 | complain_overflow_signed, /* complain_on_overflow */ | |
1604 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1605 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1606 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1607 | 0, /* src_mask */ |
1608 | 0xffff, /* dst_mask */ | |
b34976b6 | 1609 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1610 | |
411e1bfb AM |
1611 | /* Like GOT_TLSGD16, but no overflow. */ |
1612 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1613 | 0, /* rightshift */ |
1614 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1615 | 16, /* bitsize */ | |
b34976b6 | 1616 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1617 | 0, /* bitpos */ |
1618 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1619 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1620 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1621 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1622 | 0, /* src_mask */ |
1623 | 0xffff, /* dst_mask */ | |
b34976b6 | 1624 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1625 | |
411e1bfb AM |
1626 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1627 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1628 | 16, /* rightshift */ |
1629 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1630 | 16, /* bitsize */ | |
b34976b6 | 1631 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1632 | 0, /* bitpos */ |
1633 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1634 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1635 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1636 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1637 | 0, /* src_mask */ |
1638 | 0xffff, /* dst_mask */ | |
b34976b6 | 1639 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1640 | |
411e1bfb AM |
1641 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1642 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1643 | 16, /* rightshift */ |
1644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1645 | 16, /* bitsize */ | |
b34976b6 | 1646 | FALSE, /* pc_relative */ |
5bd4f169 | 1647 | 0, /* bitpos */ |
411e1bfb | 1648 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1649 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1650 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1651 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1652 | 0, /* src_mask */ |
1653 | 0xffff, /* dst_mask */ | |
b34976b6 | 1654 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1655 | |
411e1bfb AM |
1656 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1657 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1658 | first entry relative to the TOC base (r2). */ | |
1659 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1660 | 0, /* rightshift */ |
1661 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1662 | 16, /* bitsize */ | |
b34976b6 | 1663 | FALSE, /* pc_relative */ |
5bd4f169 | 1664 | 0, /* bitpos */ |
411e1bfb AM |
1665 | complain_overflow_signed, /* complain_on_overflow */ |
1666 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1667 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1668 | FALSE, /* partial_inplace */ |
d006db6c | 1669 | 0, /* src_mask */ |
411e1bfb | 1670 | 0xffff, /* dst_mask */ |
b34976b6 | 1671 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1672 | |
411e1bfb AM |
1673 | /* Like GOT_TLSLD16, but no overflow. */ |
1674 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1675 | 0, /* rightshift */ |
1676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1677 | 16, /* bitsize */ | |
b34976b6 | 1678 | FALSE, /* pc_relative */ |
5bd4f169 | 1679 | 0, /* bitpos */ |
411e1bfb AM |
1680 | complain_overflow_dont, /* complain_on_overflow */ |
1681 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1682 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1683 | FALSE, /* partial_inplace */ |
d006db6c | 1684 | 0, /* src_mask */ |
411e1bfb | 1685 | 0xffff, /* dst_mask */ |
b34976b6 | 1686 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1687 | |
411e1bfb AM |
1688 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1689 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1690 | 16, /* rightshift */ | |
5bd4f169 AM |
1691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1692 | 16, /* bitsize */ | |
b34976b6 | 1693 | FALSE, /* pc_relative */ |
5bd4f169 | 1694 | 0, /* bitpos */ |
411e1bfb | 1695 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1696 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1697 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1698 | FALSE, /* partial_inplace */ |
d006db6c | 1699 | 0, /* src_mask */ |
411e1bfb | 1700 | 0xffff, /* dst_mask */ |
b34976b6 | 1701 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1702 | |
411e1bfb AM |
1703 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1704 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1705 | 16, /* rightshift */ | |
5bd4f169 AM |
1706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1707 | 16, /* bitsize */ | |
b34976b6 | 1708 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1709 | 0, /* bitpos */ |
1710 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1711 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1712 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1713 | FALSE, /* partial_inplace */ |
d006db6c | 1714 | 0, /* src_mask */ |
411e1bfb | 1715 | 0xffff, /* dst_mask */ |
b34976b6 | 1716 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1717 | |
411e1bfb AM |
1718 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1719 | the offset to the entry relative to the TOC base (r2). */ | |
1720 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1721 | 0, /* rightshift */ |
1722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1723 | 16, /* bitsize */ | |
b34976b6 | 1724 | FALSE, /* pc_relative */ |
5bd4f169 | 1725 | 0, /* bitpos */ |
411e1bfb | 1726 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1727 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1728 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1729 | FALSE, /* partial_inplace */ |
d006db6c | 1730 | 0, /* src_mask */ |
5bd4f169 | 1731 | 0xfffc, /* dst_mask */ |
b34976b6 | 1732 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1733 | |
411e1bfb AM |
1734 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1735 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1736 | 0, /* rightshift */ |
c061c2d8 AM |
1737 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1738 | 16, /* bitsize */ | |
b34976b6 | 1739 | FALSE, /* pc_relative */ |
5bd4f169 | 1740 | 0, /* bitpos */ |
411e1bfb AM |
1741 | complain_overflow_dont, /* complain_on_overflow */ |
1742 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1743 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1744 | FALSE, /* partial_inplace */ |
d006db6c | 1745 | 0, /* src_mask */ |
c061c2d8 | 1746 | 0xfffc, /* dst_mask */ |
b34976b6 | 1747 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1748 | |
411e1bfb AM |
1749 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1750 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1751 | 16, /* rightshift */ | |
5bd4f169 AM |
1752 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1753 | 16, /* bitsize */ | |
b34976b6 | 1754 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1755 | 0, /* bitpos */ |
1756 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1757 | ppc64_elf_unhandled_reloc, /* special_function */ |
1758 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1759 | FALSE, /* partial_inplace */ |
d006db6c | 1760 | 0, /* src_mask */ |
411e1bfb | 1761 | 0xffff, /* dst_mask */ |
b34976b6 | 1762 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1763 | |
411e1bfb AM |
1764 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1765 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1766 | 16, /* rightshift */ | |
1767 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1768 | 16, /* bitsize */ | |
1769 | FALSE, /* pc_relative */ | |
1770 | 0, /* bitpos */ | |
1771 | complain_overflow_dont, /* complain_on_overflow */ | |
1772 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1773 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1774 | FALSE, /* partial_inplace */ | |
1775 | 0, /* src_mask */ | |
1776 | 0xffff, /* dst_mask */ | |
1777 | FALSE), /* pcrel_offset */ | |
1778 | ||
1779 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1780 | offset to the entry relative to the TOC base (r2). */ | |
1781 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1782 | 0, /* rightshift */ |
1783 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1784 | 16, /* bitsize */ | |
b34976b6 | 1785 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1786 | 0, /* bitpos */ |
1787 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1788 | ppc64_elf_unhandled_reloc, /* special_function */ |
1789 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1790 | FALSE, /* partial_inplace */ |
d006db6c | 1791 | 0, /* src_mask */ |
ad8e1ba5 | 1792 | 0xfffc, /* dst_mask */ |
b34976b6 | 1793 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1794 | |
411e1bfb AM |
1795 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1796 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1797 | 0, /* rightshift */ |
1798 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1799 | 16, /* bitsize */ | |
b34976b6 | 1800 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1801 | 0, /* bitpos */ |
1802 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1803 | ppc64_elf_unhandled_reloc, /* special_function */ |
1804 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1805 | FALSE, /* partial_inplace */ |
d006db6c | 1806 | 0, /* src_mask */ |
ad8e1ba5 | 1807 | 0xfffc, /* dst_mask */ |
b34976b6 | 1808 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1809 | |
411e1bfb AM |
1810 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1811 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1812 | 16, /* rightshift */ | |
5bd4f169 AM |
1813 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1814 | 16, /* bitsize */ | |
b34976b6 | 1815 | FALSE, /* pc_relative */ |
5bd4f169 | 1816 | 0, /* bitpos */ |
411e1bfb | 1817 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1818 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1819 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1820 | FALSE, /* partial_inplace */ |
d006db6c | 1821 | 0, /* src_mask */ |
411e1bfb | 1822 | 0xffff, /* dst_mask */ |
b34976b6 | 1823 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1824 | |
411e1bfb AM |
1825 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1826 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1827 | 16, /* rightshift */ | |
5bd4f169 AM |
1828 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1829 | 16, /* bitsize */ | |
b34976b6 | 1830 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1831 | 0, /* bitpos */ |
1832 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1833 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1834 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1835 | FALSE, /* partial_inplace */ |
d006db6c | 1836 | 0, /* src_mask */ |
411e1bfb | 1837 | 0xffff, /* dst_mask */ |
b34976b6 | 1838 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1839 | |
1840 | /* GNU extension to record C++ vtable hierarchy. */ | |
1841 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1842 | 0, /* rightshift */ | |
1843 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1844 | 0, /* bitsize */ | |
b34976b6 | 1845 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1846 | 0, /* bitpos */ |
1847 | complain_overflow_dont, /* complain_on_overflow */ | |
1848 | NULL, /* special_function */ | |
1849 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1850 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1851 | 0, /* src_mask */ |
1852 | 0, /* dst_mask */ | |
b34976b6 | 1853 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1854 | |
1855 | /* GNU extension to record C++ vtable member usage. */ | |
1856 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1857 | 0, /* rightshift */ | |
1858 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1859 | 0, /* bitsize */ | |
b34976b6 | 1860 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1861 | 0, /* bitpos */ |
1862 | complain_overflow_dont, /* complain_on_overflow */ | |
1863 | NULL, /* special_function */ | |
1864 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1865 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1866 | 0, /* src_mask */ |
1867 | 0, /* dst_mask */ | |
b34976b6 | 1868 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1869 | }; |
1870 | ||
1871 | \f | |
1872 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1873 | be done. */ | |
1874 | ||
1875 | static void | |
4ce794b7 | 1876 | ppc_howto_init (void) |
5bd4f169 AM |
1877 | { |
1878 | unsigned int i, type; | |
1879 | ||
1880 | for (i = 0; | |
1881 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1882 | i++) | |
1883 | { | |
1884 | type = ppc64_elf_howto_raw[i].type; | |
1885 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1886 | / sizeof (ppc64_elf_howto_table[0]))); | |
1887 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | static reloc_howto_type * | |
4ce794b7 AM |
1892 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1893 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1894 | { |
411e1bfb | 1895 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1896 | |
1897 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1898 | /* Initialize howto table if needed. */ | |
1899 | ppc_howto_init (); | |
1900 | ||
4ce794b7 | 1901 | switch (code) |
5bd4f169 AM |
1902 | { |
1903 | default: | |
4ce794b7 | 1904 | return NULL; |
5bd4f169 | 1905 | |
411e1bfb AM |
1906 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1907 | break; | |
1908 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1909 | break; | |
1910 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1911 | break; | |
1912 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1913 | break; | |
1914 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1915 | break; | |
1916 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1917 | break; | |
1918 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1919 | break; |
411e1bfb | 1920 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1921 | break; |
411e1bfb | 1922 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1923 | break; |
411e1bfb | 1924 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1925 | break; |
411e1bfb | 1926 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1927 | break; |
411e1bfb | 1928 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1929 | break; |
411e1bfb | 1930 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1931 | break; |
411e1bfb | 1932 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1933 | break; |
411e1bfb | 1934 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1935 | break; |
411e1bfb | 1936 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1937 | break; |
411e1bfb | 1938 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1939 | break; |
411e1bfb | 1940 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1941 | break; |
411e1bfb | 1942 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1943 | break; |
411e1bfb | 1944 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1945 | break; |
411e1bfb | 1946 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1947 | break; |
411e1bfb | 1948 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1949 | break; |
411e1bfb | 1950 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1951 | break; |
411e1bfb | 1952 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1953 | break; |
411e1bfb | 1954 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1955 | break; |
411e1bfb | 1956 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1957 | break; |
411e1bfb | 1958 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1959 | break; |
411e1bfb | 1960 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1961 | break; |
411e1bfb | 1962 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1963 | break; |
411e1bfb | 1964 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1965 | break; |
411e1bfb | 1966 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1967 | break; |
411e1bfb | 1968 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1969 | break; |
411e1bfb | 1970 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1971 | break; |
411e1bfb | 1972 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1973 | break; |
411e1bfb | 1974 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1975 | break; |
411e1bfb | 1976 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1977 | break; |
411e1bfb | 1978 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1979 | break; |
411e1bfb | 1980 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1981 | break; |
411e1bfb | 1982 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1983 | break; |
411e1bfb | 1984 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1985 | break; |
411e1bfb | 1986 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1987 | break; |
411e1bfb | 1988 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1989 | break; |
411e1bfb | 1990 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1991 | break; |
411e1bfb | 1992 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1993 | break; |
411e1bfb | 1994 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1995 | break; |
411e1bfb | 1996 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1997 | break; |
411e1bfb | 1998 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1999 | break; |
411e1bfb | 2000 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2001 | break; |
411e1bfb | 2002 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2003 | break; |
411e1bfb | 2004 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2005 | break; |
411e1bfb | 2006 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2007 | break; |
411e1bfb | 2008 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2009 | break; |
411e1bfb | 2010 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2011 | break; |
411e1bfb | 2012 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2013 | break; |
411e1bfb | 2014 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2015 | break; |
411e1bfb | 2016 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2017 | break; |
411e1bfb | 2018 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2019 | break; |
411e1bfb | 2020 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2021 | break; |
411e1bfb | 2022 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2023 | break; |
411e1bfb | 2024 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2025 | break; |
411e1bfb | 2026 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2027 | break; |
411e1bfb | 2028 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2029 | break; |
411e1bfb | 2030 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2031 | break; |
411e1bfb | 2032 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2033 | break; |
411e1bfb | 2034 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2035 | break; |
411e1bfb | 2036 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2037 | break; |
411e1bfb AM |
2038 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2039 | break; | |
2040 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2041 | break; | |
2042 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2043 | break; | |
2044 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2045 | break; | |
2046 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2047 | break; | |
2048 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2049 | break; | |
2050 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2051 | break; | |
2052 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2053 | break; | |
2054 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2055 | break; | |
2056 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2057 | break; | |
2058 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2059 | break; | |
2060 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2061 | break; | |
2062 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2063 | break; | |
2064 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2065 | break; | |
2066 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2067 | break; | |
2068 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2069 | break; | |
2070 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2071 | break; | |
2072 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2073 | break; | |
2074 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2075 | break; | |
2076 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2077 | break; | |
2078 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2079 | break; | |
2080 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2081 | break; | |
2082 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2083 | break; | |
2084 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2085 | break; | |
2086 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2087 | break; | |
2088 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2089 | break; | |
2090 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2091 | break; | |
2092 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2093 | break; | |
2094 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2095 | break; | |
2096 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2097 | break; | |
2098 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2099 | break; | |
2100 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2101 | break; | |
2102 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2103 | break; | |
2104 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2105 | break; | |
2106 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2107 | break; |
2108 | } | |
2109 | ||
4ce794b7 | 2110 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2111 | }; |
2112 | ||
2113 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2114 | ||
2115 | static void | |
4ce794b7 AM |
2116 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2117 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2118 | { |
65f38f15 AM |
2119 | unsigned int type; |
2120 | ||
ef60b7ff | 2121 | /* Initialize howto table if needed. */ |
5bd4f169 | 2122 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2123 | ppc_howto_init (); |
2124 | ||
65f38f15 | 2125 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2126 | if (type >= (sizeof (ppc64_elf_howto_table) |
2127 | / sizeof (ppc64_elf_howto_table[0]))) | |
2128 | { | |
2129 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2130 | abfd, (int) type); |
2131 | type = R_PPC64_NONE; | |
d0fb9a8d | 2132 | } |
65f38f15 | 2133 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2134 | } |
2135 | ||
04c9666a | 2136 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2137 | |
2138 | static bfd_reloc_status_type | |
4ce794b7 AM |
2139 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2140 | void *data, asection *input_section, | |
2141 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2142 | { |
805fc799 AM |
2143 | /* If this is a relocatable link (output_bfd test tells us), just |
2144 | call the generic function. Any adjustment will be done at final | |
2145 | link time. */ | |
2146 | if (output_bfd != NULL) | |
cedb70c5 | 2147 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2148 | input_section, output_bfd, error_message); |
2149 | ||
2150 | /* Adjust the addend for sign extension of the low 16 bits. | |
2151 | We won't actually be using the low 16 bits, so trashing them | |
2152 | doesn't matter. */ | |
2153 | reloc_entry->addend += 0x8000; | |
2154 | return bfd_reloc_continue; | |
2155 | } | |
5bd4f169 | 2156 | |
2441e016 AM |
2157 | static bfd_reloc_status_type |
2158 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2159 | void *data, asection *input_section, | |
2160 | bfd *output_bfd, char **error_message) | |
2161 | { | |
2162 | if (output_bfd != NULL) | |
2163 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2164 | input_section, output_bfd, error_message); | |
2165 | ||
699733f6 AM |
2166 | if (strcmp (symbol->section->name, ".opd") == 0 |
2167 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2168 | { |
2169 | bfd_vma dest = opd_entry_value (symbol->section, | |
2170 | symbol->value + reloc_entry->addend, | |
2171 | NULL, NULL); | |
2172 | if (dest != (bfd_vma) -1) | |
2173 | reloc_entry->addend = dest - (symbol->value | |
2174 | + symbol->section->output_section->vma | |
2175 | + symbol->section->output_offset); | |
2176 | } | |
2177 | return bfd_reloc_continue; | |
2178 | } | |
2179 | ||
805fc799 | 2180 | static bfd_reloc_status_type |
4ce794b7 AM |
2181 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2182 | void *data, asection *input_section, | |
2183 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2184 | { |
2185 | long insn; | |
04c9666a | 2186 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2187 | bfd_size_type octets; |
2188 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2189 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2190 | |
2191 | /* If this is a relocatable link (output_bfd test tells us), just | |
2192 | call the generic function. Any adjustment will be done at final | |
2193 | link time. */ | |
5bd4f169 | 2194 | if (output_bfd != NULL) |
cedb70c5 | 2195 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2196 | input_section, output_bfd, error_message); |
2197 | ||
2198 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2199 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2200 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2201 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2202 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2203 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2204 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2205 | |
2206 | if (is_power4) | |
5bd4f169 | 2207 | { |
805fc799 AM |
2208 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2209 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2210 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2211 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2212 | insn |= 0x02 << 21; | |
2213 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2214 | insn |= 0x08 << 21; | |
2215 | else | |
2441e016 | 2216 | goto out; |
5bd4f169 | 2217 | } |
805fc799 AM |
2218 | else |
2219 | { | |
2220 | bfd_vma target = 0; | |
2221 | bfd_vma from; | |
5bd4f169 | 2222 | |
805fc799 AM |
2223 | if (!bfd_is_com_section (symbol->section)) |
2224 | target = symbol->value; | |
2225 | target += symbol->section->output_section->vma; | |
2226 | target += symbol->section->output_offset; | |
2227 | target += reloc_entry->addend; | |
5bd4f169 | 2228 | |
805fc799 AM |
2229 | from = (reloc_entry->address |
2230 | + input_section->output_offset | |
2231 | + input_section->output_section->vma); | |
5bd4f169 | 2232 | |
805fc799 AM |
2233 | /* Invert 'y' bit if not the default. */ |
2234 | if ((bfd_signed_vma) (target - from) < 0) | |
2235 | insn ^= 0x01 << 21; | |
2236 | } | |
4ce794b7 | 2237 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2238 | out: |
2239 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2240 | input_section, output_bfd, error_message); | |
805fc799 | 2241 | } |
5bd4f169 | 2242 | |
805fc799 | 2243 | static bfd_reloc_status_type |
4ce794b7 AM |
2244 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2245 | void *data, asection *input_section, | |
2246 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2247 | { |
2248 | /* If this is a relocatable link (output_bfd test tells us), just | |
2249 | call the generic function. Any adjustment will be done at final | |
2250 | link time. */ | |
2251 | if (output_bfd != NULL) | |
cedb70c5 | 2252 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2253 | input_section, output_bfd, error_message); |
5bd4f169 | 2254 | |
805fc799 AM |
2255 | /* Subtract the symbol section base address. */ |
2256 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2257 | return bfd_reloc_continue; |
2258 | } | |
2259 | ||
805fc799 | 2260 | static bfd_reloc_status_type |
4ce794b7 AM |
2261 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2262 | void *data, asection *input_section, | |
2263 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2264 | { |
2265 | /* If this is a relocatable link (output_bfd test tells us), just | |
2266 | call the generic function. Any adjustment will be done at final | |
2267 | link time. */ | |
2268 | if (output_bfd != NULL) | |
cedb70c5 | 2269 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2270 | input_section, output_bfd, error_message); |
2271 | ||
2272 | /* Subtract the symbol section base address. */ | |
2273 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2274 | ||
2275 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2276 | reloc_entry->addend += 0x8000; | |
2277 | return bfd_reloc_continue; | |
2278 | } | |
2279 | ||
2280 | static bfd_reloc_status_type | |
4ce794b7 AM |
2281 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2282 | void *data, asection *input_section, | |
2283 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2284 | { |
2285 | bfd_vma TOCstart; | |
2286 | ||
2287 | /* If this is a relocatable link (output_bfd test tells us), just | |
2288 | call the generic function. Any adjustment will be done at final | |
2289 | link time. */ | |
2290 | if (output_bfd != NULL) | |
cedb70c5 | 2291 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2292 | input_section, output_bfd, error_message); |
2293 | ||
2294 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2295 | if (TOCstart == 0) | |
2296 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2297 | ||
2298 | /* Subtract the TOC base address. */ | |
2299 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2300 | return bfd_reloc_continue; | |
2301 | } | |
2302 | ||
2303 | static bfd_reloc_status_type | |
4ce794b7 AM |
2304 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2305 | void *data, asection *input_section, | |
2306 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2307 | { |
2308 | bfd_vma TOCstart; | |
2309 | ||
2310 | /* If this is a relocatable link (output_bfd test tells us), just | |
2311 | call the generic function. Any adjustment will be done at final | |
2312 | link time. */ | |
2313 | if (output_bfd != NULL) | |
cedb70c5 | 2314 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2315 | input_section, output_bfd, error_message); |
2316 | ||
2317 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2318 | if (TOCstart == 0) | |
2319 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2320 | ||
2321 | /* Subtract the TOC base address. */ | |
2322 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2323 | ||
2324 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2325 | reloc_entry->addend += 0x8000; | |
2326 | return bfd_reloc_continue; | |
2327 | } | |
2328 | ||
2329 | static bfd_reloc_status_type | |
4ce794b7 AM |
2330 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2331 | void *data, asection *input_section, | |
2332 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2333 | { |
2334 | bfd_vma TOCstart; | |
2335 | bfd_size_type octets; | |
2336 | ||
2337 | /* If this is a relocatable link (output_bfd test tells us), just | |
2338 | call the generic function. Any adjustment will be done at final | |
2339 | link time. */ | |
2340 | if (output_bfd != NULL) | |
cedb70c5 | 2341 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2342 | input_section, output_bfd, error_message); |
2343 | ||
2344 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2345 | if (TOCstart == 0) | |
2346 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2347 | ||
2348 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2349 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2350 | return bfd_reloc_ok; | |
2351 | } | |
2352 | ||
2353 | static bfd_reloc_status_type | |
4ce794b7 AM |
2354 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2355 | void *data, asection *input_section, | |
2356 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2357 | { |
2358 | /* If this is a relocatable link (output_bfd test tells us), just | |
2359 | call the generic function. Any adjustment will be done at final | |
2360 | link time. */ | |
2361 | if (output_bfd != NULL) | |
cedb70c5 | 2362 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2363 | input_section, output_bfd, error_message); |
2364 | ||
2365 | if (error_message != NULL) | |
2366 | { | |
2367 | static char buf[60]; | |
2368 | sprintf (buf, "generic linker can't handle %s", | |
2369 | reloc_entry->howto->name); | |
2370 | *error_message = buf; | |
2371 | } | |
2372 | return bfd_reloc_dangerous; | |
2373 | } | |
2374 | ||
e717da7e AM |
2375 | struct ppc64_elf_obj_tdata |
2376 | { | |
2377 | struct elf_obj_tdata elf; | |
2378 | ||
2379 | /* Shortcuts to dynamic linker sections. */ | |
2380 | asection *got; | |
2381 | asection *relgot; | |
2382 | ||
b3fac117 AM |
2383 | /* Used during garbage collection. We attach global symbols defined |
2384 | on removed .opd entries to this section so that the sym is removed. */ | |
2385 | asection *deleted_section; | |
81688140 | 2386 | |
e717da7e AM |
2387 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2388 | sections means we potentially need one of these for each input bfd. */ | |
2389 | union { | |
2390 | bfd_signed_vma refcount; | |
2391 | bfd_vma offset; | |
2392 | } tlsld_got; | |
8860955f AM |
2393 | |
2394 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2395 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2396 | }; |
2397 | ||
2398 | #define ppc64_elf_tdata(bfd) \ | |
2399 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2400 | ||
2401 | #define ppc64_tlsld_got(bfd) \ | |
2402 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2403 | ||
2404 | /* Override the generic function because we store some extras. */ | |
2405 | ||
2406 | static bfd_boolean | |
2407 | ppc64_elf_mkobject (bfd *abfd) | |
2408 | { | |
e717da7e | 2409 | if (abfd->tdata.any == NULL) |
62d7a5f6 AM |
2410 | { |
2411 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2412 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2413 | if (abfd->tdata.any == NULL) | |
2414 | return FALSE; | |
2415 | } | |
2416 | return bfd_elf_mkobject (abfd); | |
e717da7e AM |
2417 | } |
2418 | ||
ee75fd95 AM |
2419 | /* Return 1 if target is one of ours. */ |
2420 | ||
7b53ace3 | 2421 | static bfd_boolean |
ee75fd95 | 2422 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2423 | { |
2424 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2425 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2426 | ||
2427 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2428 | } | |
2429 | ||
feee612b AM |
2430 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2431 | default is 32 bit. */ | |
2432 | ||
b34976b6 | 2433 | static bfd_boolean |
4ce794b7 | 2434 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2435 | { |
2436 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2437 | { | |
2438 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2439 | ||
2440 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2441 | { | |
2442 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2443 | abfd->arch_info = abfd->arch_info->next; | |
2444 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2445 | } | |
2446 | } | |
b34976b6 | 2447 | return TRUE; |
feee612b AM |
2448 | } |
2449 | ||
d37c89e5 AM |
2450 | /* Support for core dump NOTE sections. */ |
2451 | ||
2452 | static bfd_boolean | |
2453 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2454 | { | |
eea6121a | 2455 | size_t offset, size; |
d37c89e5 AM |
2456 | |
2457 | if (note->descsz != 504) | |
2458 | return FALSE; | |
2459 | ||
2460 | /* pr_cursig */ | |
2461 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2462 | ||
2463 | /* pr_pid */ | |
2464 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2465 | ||
2466 | /* pr_reg */ | |
2467 | offset = 112; | |
eea6121a | 2468 | size = 384; |
d37c89e5 AM |
2469 | |
2470 | /* Make a ".reg/999" section. */ | |
2471 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2472 | size, note->descpos + offset); |
d37c89e5 AM |
2473 | } |
2474 | ||
2475 | static bfd_boolean | |
2476 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2477 | { | |
2478 | if (note->descsz != 136) | |
2479 | return FALSE; | |
2480 | ||
2481 | elf_tdata (abfd)->core_program | |
2482 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2483 | elf_tdata (abfd)->core_command | |
2484 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2485 | ||
2486 | return TRUE; | |
2487 | } | |
2488 | ||
183e98be AM |
2489 | static char * |
2490 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2491 | ...) | |
2492 | { | |
2493 | switch (note_type) | |
2494 | { | |
2495 | default: | |
2496 | return NULL; | |
2497 | ||
2498 | case NT_PRPSINFO: | |
2499 | { | |
2500 | char data[136]; | |
2501 | va_list ap; | |
2502 | ||
2503 | va_start (ap, note_type); | |
2504 | memset (data, 0, 40); | |
2505 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2506 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2507 | va_end (ap); | |
2508 | return elfcore_write_note (abfd, buf, bufsiz, | |
2509 | "CORE", note_type, data, sizeof (data)); | |
2510 | } | |
2511 | ||
2512 | case NT_PRSTATUS: | |
2513 | { | |
2514 | char data[504]; | |
2515 | va_list ap; | |
2516 | long pid; | |
2517 | int cursig; | |
2518 | const void *greg; | |
2519 | ||
2520 | va_start (ap, note_type); | |
2521 | memset (data, 0, 112); | |
2522 | pid = va_arg (ap, long); | |
2523 | bfd_put_32 (abfd, pid, data + 32); | |
2524 | cursig = va_arg (ap, int); | |
2525 | bfd_put_16 (abfd, cursig, data + 12); | |
2526 | greg = va_arg (ap, const void *); | |
2527 | memcpy (data + 112, greg, 384); | |
2528 | memset (data + 496, 0, 8); | |
2529 | va_end (ap); | |
2530 | return elfcore_write_note (abfd, buf, bufsiz, | |
2531 | "CORE", note_type, data, sizeof (data)); | |
2532 | } | |
2533 | } | |
2534 | } | |
2535 | ||
5bd4f169 AM |
2536 | /* Merge backend specific data from an object file to the output |
2537 | object file when linking. */ | |
2f6d9989 | 2538 | |
b34976b6 | 2539 | static bfd_boolean |
4ce794b7 | 2540 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2541 | { |
5bd4f169 AM |
2542 | /* Check if we have the same endianess. */ |
2543 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2544 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2545 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2546 | { | |
2547 | const char *msg; | |
2548 | ||
2549 | if (bfd_big_endian (ibfd)) | |
d003868e | 2550 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2551 | "and target is little endian"); |
5bd4f169 | 2552 | else |
d003868e | 2553 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2554 | "and target is big endian"); |
5bd4f169 | 2555 | |
d003868e | 2556 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2557 | |
2558 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2559 | return FALSE; |
5bd4f169 AM |
2560 | } |
2561 | ||
b34976b6 | 2562 | return TRUE; |
5bd4f169 | 2563 | } |
f0abc2a1 | 2564 | |
5d35169e AM |
2565 | /* Add extra PPC sections. */ |
2566 | ||
b35d266b | 2567 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2568 | { |
0112cd26 NC |
2569 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2570 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2571 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2572 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2573 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2574 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2575 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2576 | }; |
2577 | ||
7c8fe5c4 AM |
2578 | enum _ppc64_sec_type { |
2579 | sec_normal = 0, | |
2580 | sec_opd = 1, | |
2581 | sec_toc = 2 | |
2582 | }; | |
2583 | ||
f0abc2a1 AM |
2584 | struct _ppc64_elf_section_data |
2585 | { | |
2586 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2587 | |
2588 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2589 | union |
2590 | { | |
411e1bfb | 2591 | /* Points to the function code section for local opd entries. */ |
7c8fe5c4 | 2592 | asection **opd_func_sec; |
411e1bfb | 2593 | /* After editing .opd, adjust references to opd local syms. */ |
7c8fe5c4 AM |
2594 | long *opd_adjust; |
2595 | ||
2596 | /* An array for toc sections, indexed by offset/8. | |
2597 | Specifies the relocation symbol index used at a given toc offset. */ | |
2598 | unsigned *t_symndx; | |
2599 | } u; | |
2600 | ||
2601 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2602 | |
7c8fe5c4 AM |
2603 | /* Flag set when small branches are detected. Used to |
2604 | select suitable defaults for the stub group size. */ | |
2605 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2606 | }; |
2607 | ||
2608 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2609 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2610 | |
2611 | static bfd_boolean | |
4ce794b7 | 2612 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2613 | { |
f592407e AM |
2614 | if (!sec->used_by_bfd) |
2615 | { | |
2616 | struct _ppc64_elf_section_data *sdata; | |
2617 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2618 | |
f592407e AM |
2619 | sdata = bfd_zalloc (abfd, amt); |
2620 | if (sdata == NULL) | |
2621 | return FALSE; | |
2622 | sec->used_by_bfd = sdata; | |
2623 | } | |
f0abc2a1 AM |
2624 | |
2625 | return _bfd_elf_new_section_hook (abfd, sec); | |
2626 | } | |
4025353c AM |
2627 | |
2628 | static void * | |
2629 | get_opd_info (asection * sec) | |
2630 | { | |
2631 | if (sec != NULL | |
2632 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 AM |
2633 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
2634 | return ppc64_elf_section_data (sec)->u.opd_adjust; | |
4025353c AM |
2635 | return NULL; |
2636 | } | |
90e3cdf2 JJ |
2637 | \f |
2638 | /* Parameters for the qsort hook. */ | |
2639 | static asection *synthetic_opd; | |
2640 | static bfd_boolean synthetic_relocatable; | |
2641 | ||
699733f6 | 2642 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2643 | |
2644 | static int | |
2645 | compare_symbols (const void *ap, const void *bp) | |
2646 | { | |
2647 | const asymbol *a = * (const asymbol **) ap; | |
2648 | const asymbol *b = * (const asymbol **) bp; | |
2649 | ||
699733f6 AM |
2650 | /* Section symbols first. */ |
2651 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2652 | return -1; |
699733f6 | 2653 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2654 | return 1; |
2655 | ||
699733f6 | 2656 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2657 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2658 | return -1; | |
2659 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2660 | return 1; | |
2661 | ||
699733f6 | 2662 | /* then other code symbols. */ |
90e3cdf2 JJ |
2663 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2664 | == (SEC_CODE | SEC_ALLOC) | |
2665 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2666 | != (SEC_CODE | SEC_ALLOC)) | |
2667 | return -1; | |
2668 | ||
2669 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2670 | != (SEC_CODE | SEC_ALLOC) | |
2671 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2672 | == (SEC_CODE | SEC_ALLOC)) | |
2673 | return 1; | |
2674 | ||
2675 | if (synthetic_relocatable) | |
2676 | { | |
2677 | if (a->section->id < b->section->id) | |
2678 | return -1; | |
2679 | ||
2680 | if (a->section->id > b->section->id) | |
2681 | return 1; | |
2682 | } | |
2683 | ||
2684 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2685 | return -1; | |
2686 | ||
2687 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2688 | return 1; | |
2689 | ||
4d35a0aa AM |
2690 | /* For syms with the same value, prefer strong dynamic global function |
2691 | syms over other syms. */ | |
2692 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2693 | return -1; | |
2694 | ||
2695 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2696 | return 1; | |
2697 | ||
2698 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2699 | return -1; | |
2700 | ||
2701 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2702 | return 1; | |
2703 | ||
2704 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2705 | return -1; | |
2706 | ||
2707 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2708 | return 1; | |
2709 | ||
2710 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2711 | return -1; | |
2712 | ||
2713 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2714 | return 1; | |
2715 | ||
90e3cdf2 JJ |
2716 | return 0; |
2717 | } | |
2718 | ||
699733f6 | 2719 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2720 | |
699733f6 AM |
2721 | static asymbol * |
2722 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2723 | { |
699733f6 | 2724 | long mid; |
90e3cdf2 | 2725 | |
699733f6 AM |
2726 | if (id == -1) |
2727 | { | |
2728 | while (lo < hi) | |
2729 | { | |
2730 | mid = (lo + hi) >> 1; | |
2731 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2732 | lo = mid + 1; | |
2733 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2734 | hi = mid; | |
2735 | else | |
2736 | return syms[mid]; | |
2737 | } | |
2738 | } | |
2739 | else | |
2740 | { | |
2741 | while (lo < hi) | |
2742 | { | |
2743 | mid = (lo + hi) >> 1; | |
2744 | if (syms[mid]->section->id < id) | |
2745 | lo = mid + 1; | |
2746 | else if (syms[mid]->section->id > id) | |
2747 | hi = mid; | |
2748 | else if (syms[mid]->value < value) | |
2749 | lo = mid + 1; | |
2750 | else if (syms[mid]->value > value) | |
2751 | hi = mid; | |
2752 | else | |
2753 | return syms[mid]; | |
2754 | } | |
2755 | } | |
2756 | return NULL; | |
90e3cdf2 JJ |
2757 | } |
2758 | ||
699733f6 AM |
2759 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2760 | entry syms. */ | |
90e3cdf2 JJ |
2761 | |
2762 | static long | |
a7535cf3 AM |
2763 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2764 | long static_count, asymbol **static_syms, | |
2765 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2766 | asymbol **ret) |
90e3cdf2 JJ |
2767 | { |
2768 | asymbol *s; | |
699733f6 AM |
2769 | long i; |
2770 | long count; | |
90e3cdf2 | 2771 | char *names; |
a7535cf3 | 2772 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2773 | asection *opd; |
90e3cdf2 | 2774 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2775 | asymbol **syms; |
90e3cdf2 JJ |
2776 | |
2777 | *ret = NULL; | |
2778 | ||
2779 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2780 | if (opd == NULL) | |
2781 | return 0; | |
2782 | ||
a7535cf3 | 2783 | symcount = static_count; |
c9727e01 | 2784 | if (!relocatable) |
a7535cf3 | 2785 | symcount += dyn_count; |
90e3cdf2 | 2786 | if (symcount == 0) |
c9727e01 | 2787 | return 0; |
90e3cdf2 | 2788 | |
a7535cf3 AM |
2789 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2790 | if (syms == NULL) | |
7356fed5 | 2791 | return -1; |
a7535cf3 AM |
2792 | |
2793 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2794 | { | |
2795 | /* Use both symbol tables. */ | |
2796 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2797 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2798 | } | |
2799 | else if (!relocatable && static_count == 0) | |
2800 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2801 | else | |
2802 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2803 | ||
90e3cdf2 JJ |
2804 | synthetic_opd = opd; |
2805 | synthetic_relocatable = relocatable; | |
595da8c5 | 2806 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2807 | |
c9727e01 AM |
2808 | if (!relocatable && symcount > 1) |
2809 | { | |
2810 | long j; | |
2811 | /* Trim duplicate syms, since we may have merged the normal and | |
2812 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2813 | different values, so trim any with the same value. */ |
c9727e01 AM |
2814 | for (i = 1, j = 1; i < symcount; ++i) |
2815 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2816 | != syms[i]->value + syms[i]->section->vma) | |
2817 | syms[j++] = syms[i]; | |
2818 | symcount = j; | |
2819 | } | |
2820 | ||
699733f6 AM |
2821 | i = 0; |
2822 | if (syms[i]->section == opd) | |
2823 | ++i; | |
2824 | codesecsym = i; | |
90e3cdf2 | 2825 | |
699733f6 AM |
2826 | for (; i < symcount; ++i) |
2827 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2828 | != (SEC_CODE | SEC_ALLOC)) | |
2829 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2830 | break; | |
2831 | codesecsymend = i; | |
90e3cdf2 | 2832 | |
699733f6 AM |
2833 | for (; i < symcount; ++i) |
2834 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2835 | break; | |
2836 | secsymend = i; | |
90e3cdf2 | 2837 | |
699733f6 AM |
2838 | for (; i < symcount; ++i) |
2839 | if (syms[i]->section != opd) | |
2840 | break; | |
2841 | opdsymend = i; | |
90e3cdf2 | 2842 | |
699733f6 AM |
2843 | for (; i < symcount; ++i) |
2844 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2845 | != (SEC_CODE | SEC_ALLOC)) | |
2846 | break; | |
2847 | symcount = i; | |
2848 | ||
c9727e01 | 2849 | count = 0; |
699733f6 | 2850 | if (opdsymend == secsymend) |
c9727e01 | 2851 | goto done; |
90e3cdf2 | 2852 | |
699733f6 | 2853 | if (relocatable) |
90e3cdf2 | 2854 | { |
699733f6 AM |
2855 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2856 | arelent *r; | |
2857 | size_t size; | |
2858 | long relcount; | |
90e3cdf2 | 2859 | |
699733f6 | 2860 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2861 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2862 | if (relcount == 0) |
c9727e01 | 2863 | goto done; |
90e3cdf2 | 2864 | |
7356fed5 AM |
2865 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2866 | { | |
2867 | count = -1; | |
2868 | goto done; | |
2869 | } | |
2870 | ||
699733f6 | 2871 | size = 0; |
595da8c5 | 2872 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2873 | { |
2874 | asymbol *sym; | |
90e3cdf2 | 2875 | |
595da8c5 | 2876 | while (r < opd->relocation + relcount |
699733f6 AM |
2877 | && r->address < syms[i]->value + opd->vma) |
2878 | ++r; | |
90e3cdf2 | 2879 | |
595da8c5 | 2880 | if (r == opd->relocation + relcount) |
699733f6 | 2881 | break; |
90e3cdf2 | 2882 | |
699733f6 AM |
2883 | if (r->address != syms[i]->value + opd->vma) |
2884 | continue; | |
90e3cdf2 | 2885 | |
699733f6 AM |
2886 | if (r->howto->type != R_PPC64_ADDR64) |
2887 | continue; | |
90e3cdf2 | 2888 | |
699733f6 AM |
2889 | sym = *r->sym_ptr_ptr; |
2890 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2891 | sym->section->id, sym->value + r->addend)) | |
2892 | { | |
2893 | ++count; | |
2894 | size += sizeof (asymbol); | |
2895 | size += strlen (syms[i]->name) + 2; | |
2896 | } | |
2897 | } | |
90e3cdf2 | 2898 | |
699733f6 AM |
2899 | s = *ret = bfd_malloc (size); |
2900 | if (s == NULL) | |
2901 | { | |
7356fed5 | 2902 | count = -1; |
c9727e01 | 2903 | goto done; |
699733f6 | 2904 | } |
90e3cdf2 | 2905 | |
699733f6 | 2906 | names = (char *) (s + count); |
90e3cdf2 | 2907 | |
595da8c5 | 2908 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2909 | { |
699733f6 | 2910 | asymbol *sym; |
90e3cdf2 | 2911 | |
595da8c5 | 2912 | while (r < opd->relocation + relcount |
699733f6 AM |
2913 | && r->address < syms[i]->value + opd->vma) |
2914 | ++r; | |
90e3cdf2 | 2915 | |
595da8c5 | 2916 | if (r == opd->relocation + relcount) |
699733f6 AM |
2917 | break; |
2918 | ||
2919 | if (r->address != syms[i]->value + opd->vma) | |
2920 | continue; | |
2921 | ||
2922 | if (r->howto->type != R_PPC64_ADDR64) | |
2923 | continue; | |
90e3cdf2 | 2924 | |
699733f6 AM |
2925 | sym = *r->sym_ptr_ptr; |
2926 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2927 | sym->section->id, sym->value + r->addend)) | |
2928 | { | |
2929 | size_t len; | |
2930 | ||
2931 | *s = *syms[i]; | |
2932 | s->section = sym->section; | |
2933 | s->value = sym->value + r->addend; | |
2934 | s->name = names; | |
2935 | *names++ = '.'; | |
2936 | len = strlen (syms[i]->name); | |
2937 | memcpy (names, syms[i]->name, len + 1); | |
2938 | names += len + 1; | |
2939 | s++; | |
2940 | } | |
2941 | } | |
2942 | } | |
2943 | else | |
90e3cdf2 | 2944 | { |
699733f6 AM |
2945 | bfd_byte *contents; |
2946 | size_t size; | |
90e3cdf2 | 2947 | |
699733f6 AM |
2948 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2949 | { | |
2950 | if (contents) | |
c9727e01 AM |
2951 | { |
2952 | free_contents_and_exit: | |
2953 | free (contents); | |
2954 | } | |
7356fed5 | 2955 | count = -1; |
c9727e01 | 2956 | goto done; |
699733f6 | 2957 | } |
90e3cdf2 | 2958 | |
699733f6 AM |
2959 | size = 0; |
2960 | for (i = secsymend; i < opdsymend; ++i) | |
2961 | { | |
2962 | bfd_vma ent; | |
90e3cdf2 | 2963 | |
699733f6 AM |
2964 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2965 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2966 | { | |
2967 | ++count; | |
2968 | size += sizeof (asymbol); | |
2969 | size += strlen (syms[i]->name) + 2; | |
2970 | } | |
2971 | } | |
90e3cdf2 | 2972 | |
699733f6 AM |
2973 | s = *ret = bfd_malloc (size); |
2974 | if (s == NULL) | |
7356fed5 | 2975 | goto free_contents_and_exit; |
90e3cdf2 | 2976 | |
699733f6 | 2977 | names = (char *) (s + count); |
90e3cdf2 | 2978 | |
699733f6 | 2979 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2980 | { |
699733f6 | 2981 | bfd_vma ent; |
90e3cdf2 | 2982 | |
699733f6 AM |
2983 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2984 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2985 | { |
c9727e01 | 2986 | long lo, hi; |
699733f6 | 2987 | size_t len; |
c9727e01 | 2988 | asection *sec = abfd->sections; |
90e3cdf2 | 2989 | |
699733f6 AM |
2990 | *s = *syms[i]; |
2991 | lo = codesecsym; | |
2992 | hi = codesecsymend; | |
2993 | while (lo < hi) | |
2994 | { | |
c9727e01 | 2995 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2996 | if (syms[mid]->section->vma < ent) |
2997 | lo = mid + 1; | |
2998 | else if (syms[mid]->section->vma > ent) | |
2999 | hi = mid; | |
3000 | else | |
c9727e01 AM |
3001 | { |
3002 | sec = syms[mid]->section; | |
3003 | break; | |
3004 | } | |
699733f6 AM |
3005 | } |
3006 | ||
c9727e01 | 3007 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3008 | sec = syms[lo - 1]->section; |
699733f6 AM |
3009 | |
3010 | for (; sec != NULL; sec = sec->next) | |
3011 | { | |
3012 | if (sec->vma > ent) | |
3013 | break; | |
3014 | if ((sec->flags & SEC_ALLOC) == 0 | |
3015 | || (sec->flags & SEC_LOAD) == 0) | |
3016 | break; | |
3017 | if ((sec->flags & SEC_CODE) != 0) | |
3018 | s->section = sec; | |
3019 | } | |
3020 | s->value = ent - s->section->vma; | |
3021 | s->name = names; | |
3022 | *names++ = '.'; | |
3023 | len = strlen (syms[i]->name); | |
3024 | memcpy (names, syms[i]->name, len + 1); | |
3025 | names += len + 1; | |
3026 | s++; | |
90e3cdf2 | 3027 | } |
90e3cdf2 | 3028 | } |
699733f6 | 3029 | free (contents); |
90e3cdf2 JJ |
3030 | } |
3031 | ||
c9727e01 | 3032 | done: |
a7535cf3 | 3033 | free (syms); |
90e3cdf2 JJ |
3034 | return count; |
3035 | } | |
5bd4f169 | 3036 | \f |
65f38f15 AM |
3037 | /* The following functions are specific to the ELF linker, while |
3038 | functions above are used generally. Those named ppc64_elf_* are | |
3039 | called by the main ELF linker code. They appear in this file more | |
3040 | or less in the order in which they are called. eg. | |
3041 | ppc64_elf_check_relocs is called early in the link process, | |
3042 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3043 | called. |
3044 | ||
3045 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3046 | functions have both a function code symbol and a function descriptor | |
3047 | symbol. A call to foo in a relocatable object file looks like: | |
3048 | ||
3049 | . .text | |
3050 | . x: | |
3051 | . bl .foo | |
3052 | . nop | |
3053 | ||
3054 | The function definition in another object file might be: | |
3055 | ||
3056 | . .section .opd | |
3057 | . foo: .quad .foo | |
3058 | . .quad .TOC.@tocbase | |
3059 | . .quad 0 | |
3060 | . | |
3061 | . .text | |
3062 | . .foo: blr | |
3063 | ||
3064 | When the linker resolves the call during a static link, the branch | |
3065 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3066 | If the function definition is in a shared library, things are a little | |
3067 | different: The call goes via a plt call stub, the opd information gets | |
3068 | copied to the plt, and the linker patches the nop. | |
3069 | ||
3070 | . x: | |
3071 | . bl .foo_stub | |
3072 | . ld 2,40(1) | |
3073 | . | |
3074 | . | |
3075 | . .foo_stub: | |
3076 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3077 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3078 | . std 2,40(1) # this is the general idea |
3079 | . ld 11,0(12) | |
3080 | . ld 2,8(12) | |
3081 | . mtctr 11 | |
3082 | . ld 11,16(12) | |
3083 | . bctr | |
3084 | . | |
3085 | . .section .plt | |
3086 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3087 | ||
3088 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3089 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3090 | copying. | |
3091 | ||
3092 | What are the difficulties here? Well, firstly, the relocations | |
3093 | examined by the linker in check_relocs are against the function code | |
3094 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3095 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3096 | to carefully copy dynamic link information from one symbol to the other. | |
3097 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3098 | symbol as is normal for most other backends. We need foo dynamic | |
3099 | instead, at least for an application final link. However, when | |
3100 | creating a shared library containing foo, we need to have both symbols | |
3101 | dynamic so that references to .foo are satisfied during the early | |
3102 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3103 | definition from some other object, eg. a static library. |
3104 | ||
3105 | Update: As of August 2004, we support a new convention. Function | |
3106 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3107 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3108 | |
3109 | /* The linker needs to keep track of the number of relocs that it | |
3110 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3111 | This is so that it can later discard them if they are found to be | |
3112 | unnecessary. We store the information in a field extending the | |
3113 | regular ELF linker hash table. */ | |
3114 | ||
3115 | struct ppc_dyn_relocs | |
3116 | { | |
3117 | struct ppc_dyn_relocs *next; | |
3118 | ||
3119 | /* The input section of the reloc. */ | |
3120 | asection *sec; | |
3121 | ||
3122 | /* Total number of relocs copied for the input section. */ | |
3123 | bfd_size_type count; | |
3124 | ||
3125 | /* Number of pc-relative relocs copied for the input section. */ | |
3126 | bfd_size_type pc_count; | |
3127 | }; | |
3128 | ||
411e1bfb AM |
3129 | /* Track GOT entries needed for a given symbol. We might need more |
3130 | than one got entry per symbol. */ | |
3131 | struct got_entry | |
3132 | { | |
3133 | struct got_entry *next; | |
3134 | ||
e7b938ca | 3135 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3136 | bfd_vma addend; |
3137 | ||
e717da7e AM |
3138 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3139 | symbol referenced from different input files. This is to support | |
3140 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3141 | from one input file to another. | |
3142 | ||
3143 | Point to the BFD owning this GOT entry. */ | |
3144 | bfd *owner; | |
3145 | ||
3146 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3147 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3148 | char tls_type; | |
3149 | ||
e7b938ca | 3150 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3151 | union |
3152 | { | |
3153 | bfd_signed_vma refcount; | |
3154 | bfd_vma offset; | |
3155 | } got; | |
411e1bfb AM |
3156 | }; |
3157 | ||
3158 | /* The same for PLT. */ | |
3159 | struct plt_entry | |
3160 | { | |
3161 | struct plt_entry *next; | |
3162 | ||
3163 | bfd_vma addend; | |
3164 | ||
3165 | union | |
3166 | { | |
3167 | bfd_signed_vma refcount; | |
3168 | bfd_vma offset; | |
3169 | } plt; | |
3170 | }; | |
3171 | ||
65f38f15 | 3172 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3173 | selects those that must be copied when linking a shared library, |
3174 | even when the symbol is local. */ | |
65f38f15 | 3175 | |
411e1bfb | 3176 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3177 | ((RTYPE) != R_PPC64_REL32 \ |
3178 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3179 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3180 | |
f4656909 AM |
3181 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3182 | copying dynamic variables from a shared lib into an app's dynbss | |
3183 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3184 | shared lib. With code that gcc generates, it's vital that this be |
3185 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3186 | the address of a function descriptor, which resides in the .opd | |
3187 | section. gcc uses the descriptor directly rather than going via the | |
3188 | GOT as some other ABI's do, which means that initialized function | |
3189 | pointers must reference the descriptor. Thus, a function pointer | |
3190 | initialized to the address of a function in a shared library will | |
3191 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3192 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3193 | presents a problem as a plt entry for that function is also |
3194 | initialized from the function descriptor symbol and the copy reloc | |
3195 | may not be initialized first. */ | |
a23b6845 | 3196 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3197 | |
721956f4 AM |
3198 | /* Section name for stubs is the associated section name plus this |
3199 | string. */ | |
3200 | #define STUB_SUFFIX ".stub" | |
3201 | ||
3202 | /* Linker stubs. | |
3203 | ppc_stub_long_branch: | |
3204 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3205 | destination, but a 24 bit branch in a stub section will reach. | |
3206 | . b dest | |
3207 | ||
3208 | ppc_stub_plt_branch: | |
3209 | Similar to the above, but a 24 bit branch in the stub section won't | |
3210 | reach its destination. | |
87e226ce AM |
3211 | . addis %r12,%r2,xxx@toc@ha |
3212 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3213 | . mtctr %r11 |
3214 | . bctr | |
3215 | ||
3216 | ppc_stub_plt_call: | |
2c66dc6c AM |
3217 | Used to call a function in a shared library. If it so happens that |
3218 | the plt entry referenced crosses a 64k boundary, then an extra | |
3219 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3220 | xxx+16 as appropriate. | |
87e226ce | 3221 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3222 | . std %r2,40(%r1) |
87e226ce AM |
3223 | . ld %r11,xxx+0@toc@l(%r12) |
3224 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3225 | . mtctr %r11 |
87e226ce | 3226 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3227 | . bctr |
ad8e1ba5 AM |
3228 | |
3229 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3230 | code to adjust the value and save r2 to support multiple toc sections. | |
3231 | A ppc_stub_long_branch with an r2 offset looks like: | |
3232 | . std %r2,40(%r1) | |
3233 | . addis %r2,%r2,off@ha | |
3234 | . addi %r2,%r2,off@l | |
3235 | . b dest | |
3236 | ||
3237 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3238 | . std %r2,40(%r1) | |
3239 | . addis %r12,%r2,xxx@toc@ha | |
3240 | . ld %r11,xxx@toc@l(%r12) | |
3241 | . addis %r2,%r2,off@ha | |
3242 | . addi %r2,%r2,off@l | |
3243 | . mtctr %r11 | |
3244 | . bctr | |
721956f4 AM |
3245 | */ |
3246 | ||
3247 | enum ppc_stub_type { | |
3248 | ppc_stub_none, | |
3249 | ppc_stub_long_branch, | |
ad8e1ba5 | 3250 | ppc_stub_long_branch_r2off, |
721956f4 | 3251 | ppc_stub_plt_branch, |
ad8e1ba5 | 3252 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3253 | ppc_stub_plt_call |
3254 | }; | |
3255 | ||
3256 | struct ppc_stub_hash_entry { | |
3257 | ||
3258 | /* Base hash table entry structure. */ | |
3259 | struct bfd_hash_entry root; | |
3260 | ||
ad8e1ba5 AM |
3261 | enum ppc_stub_type stub_type; |
3262 | ||
721956f4 AM |
3263 | /* The stub section. */ |
3264 | asection *stub_sec; | |
3265 | ||
3266 | /* Offset within stub_sec of the beginning of this stub. */ | |
3267 | bfd_vma stub_offset; | |
3268 | ||
3269 | /* Given the symbol's value and its section we can determine its final | |
3270 | value when building the stubs (so the stub knows where to jump. */ | |
3271 | bfd_vma target_value; | |
3272 | asection *target_section; | |
3273 | ||
721956f4 AM |
3274 | /* The symbol table entry, if any, that this was derived from. */ |
3275 | struct ppc_link_hash_entry *h; | |
3276 | ||
411e1bfb AM |
3277 | /* And the reloc addend that this was derived from. */ |
3278 | bfd_vma addend; | |
3279 | ||
721956f4 AM |
3280 | /* Where this stub is being called from, or, in the case of combined |
3281 | stub sections, the first input section in the group. */ | |
3282 | asection *id_sec; | |
3283 | }; | |
3284 | ||
3285 | struct ppc_branch_hash_entry { | |
3286 | ||
3287 | /* Base hash table entry structure. */ | |
3288 | struct bfd_hash_entry root; | |
3289 | ||
c456f082 | 3290 | /* Offset within branch lookup table. */ |
721956f4 AM |
3291 | unsigned int offset; |
3292 | ||
3293 | /* Generation marker. */ | |
3294 | unsigned int iter; | |
3295 | }; | |
65f38f15 AM |
3296 | |
3297 | struct ppc_link_hash_entry | |
3298 | { | |
3299 | struct elf_link_hash_entry elf; | |
3300 | ||
b3fac117 AM |
3301 | union { |
3302 | /* A pointer to the most recently used stub hash entry against this | |
3303 | symbol. */ | |
3304 | struct ppc_stub_hash_entry *stub_cache; | |
3305 | ||
3306 | /* A pointer to the next symbol starting with a '.' */ | |
3307 | struct ppc_link_hash_entry *next_dot_sym; | |
3308 | } u; | |
721956f4 | 3309 | |
65f38f15 AM |
3310 | /* Track dynamic relocs copied for this symbol. */ |
3311 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3312 | |
721956f4 | 3313 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3314 | struct ppc_link_hash_entry *oh; |
721956f4 | 3315 | |
e86ce104 AM |
3316 | /* Flag function code and descriptor symbols. */ |
3317 | unsigned int is_func:1; | |
3318 | unsigned int is_func_descriptor:1; | |
908b32fc | 3319 | unsigned int fake:1; |
411e1bfb | 3320 | |
c5614fa4 AM |
3321 | /* Whether global opd/toc sym has been adjusted or not. |
3322 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3323 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3324 | unsigned int adjust_done:1; |
3325 | ||
99877b66 AM |
3326 | /* Set if we twiddled this symbol to weak at some stage. */ |
3327 | unsigned int was_undefined:1; | |
3328 | ||
411e1bfb | 3329 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3330 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3331 | corresponding relocs are encountered during check_relocs. | |
3332 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3333 | indicate the corresponding GOT entry type is not needed. | |
3334 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3335 | a TPREL one. We use a separate flag rather than setting TPREL | |
3336 | just for convenience in distinguishing the two cases. */ | |
3337 | #define TLS_GD 1 /* GD reloc. */ | |
3338 | #define TLS_LD 2 /* LD reloc. */ | |
3339 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3340 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3341 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3342 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3343 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3344 | char tls_mask; | |
65f38f15 AM |
3345 | }; |
3346 | ||
3347 | /* ppc64 ELF linker hash table. */ | |
3348 | ||
3349 | struct ppc_link_hash_table | |
3350 | { | |
3351 | struct elf_link_hash_table elf; | |
3352 | ||
721956f4 AM |
3353 | /* The stub hash table. */ |
3354 | struct bfd_hash_table stub_hash_table; | |
3355 | ||
3356 | /* Another hash table for plt_branch stubs. */ | |
3357 | struct bfd_hash_table branch_hash_table; | |
3358 | ||
3359 | /* Linker stub bfd. */ | |
3360 | bfd *stub_bfd; | |
3361 | ||
3362 | /* Linker call-backs. */ | |
4ce794b7 AM |
3363 | asection * (*add_stub_section) (const char *, asection *); |
3364 | void (*layout_sections_again) (void); | |
721956f4 AM |
3365 | |
3366 | /* Array to keep track of which stub sections have been created, and | |
3367 | information on stub grouping. */ | |
3368 | struct map_stub { | |
3369 | /* This is the section to which stubs in the group will be attached. */ | |
3370 | asection *link_sec; | |
3371 | /* The stub section. */ | |
3372 | asection *stub_sec; | |
ad8e1ba5 AM |
3373 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3374 | bfd_vma toc_off; | |
721956f4 AM |
3375 | } *stub_group; |
3376 | ||
ad8e1ba5 AM |
3377 | /* Temp used when calculating TOC pointers. */ |
3378 | bfd_vma toc_curr; | |
3379 | ||
8f3bab57 AM |
3380 | /* Highest input section id. */ |
3381 | int top_id; | |
3382 | ||
734b6cf9 AM |
3383 | /* Highest output section index. */ |
3384 | int top_index; | |
3385 | ||
b3fac117 AM |
3386 | /* Used when adding symbols. */ |
3387 | struct ppc_link_hash_entry *dot_syms; | |
3388 | ||
734b6cf9 AM |
3389 | /* List of input sections for each output section. */ |
3390 | asection **input_list; | |
721956f4 | 3391 | |
65f38f15 | 3392 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3393 | asection *got; |
4ce794b7 AM |
3394 | asection *plt; |
3395 | asection *relplt; | |
3396 | asection *dynbss; | |
3397 | asection *relbss; | |
3398 | asection *glink; | |
82bd7b59 | 3399 | asection *sfpr; |
4ce794b7 AM |
3400 | asection *brlt; |
3401 | asection *relbrlt; | |
ec338859 | 3402 | |
8387904d AM |
3403 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3404 | struct ppc_link_hash_entry *tls_get_addr; | |
3405 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3406 | |
9b5ecbd0 AM |
3407 | /* Statistics. */ |
3408 | unsigned long stub_count[ppc_stub_plt_call]; | |
3409 | ||
ee75fd95 AM |
3410 | /* Number of stubs against global syms. */ |
3411 | unsigned long stub_globals; | |
3412 | ||
ad8e1ba5 | 3413 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3414 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3415 | |
4c52953f AM |
3416 | /* Support for multiple toc sections. */ |
3417 | unsigned int no_multi_toc:1; | |
3418 | unsigned int multi_toc_needed:1; | |
3419 | ||
5d1634d7 | 3420 | /* Set on error. */ |
99877b66 | 3421 | unsigned int stub_error:1; |
721956f4 | 3422 | |
99877b66 AM |
3423 | /* Temp used by ppc64_elf_check_directives. */ |
3424 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3425 | |
3426 | /* Incremented every time we size stubs. */ | |
3427 | unsigned int stub_iteration; | |
5d1634d7 | 3428 | |
ec338859 AM |
3429 | /* Small local sym to section mapping cache. */ |
3430 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3431 | }; |
3432 | ||
4c52953f AM |
3433 | /* Rename some of the generic section flags to better document how they |
3434 | are used here. */ | |
3435 | #define has_toc_reloc has_gp_reloc | |
3436 | #define makes_toc_func_call need_finalize_relax | |
3437 | #define call_check_in_progress reloc_done | |
3438 | ||
65f38f15 AM |
3439 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3440 | ||
3441 | #define ppc_hash_table(p) \ | |
3442 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3443 | ||
721956f4 AM |
3444 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3445 | ((struct ppc_stub_hash_entry *) \ | |
3446 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3447 | ||
3448 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3449 | ((struct ppc_branch_hash_entry *) \ | |
3450 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3451 | ||
3452 | /* Create an entry in the stub hash table. */ | |
3453 | ||
3454 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3455 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3456 | struct bfd_hash_table *table, | |
3457 | const char *string) | |
721956f4 AM |
3458 | { |
3459 | /* Allocate the structure if it has not already been allocated by a | |
3460 | subclass. */ | |
3461 | if (entry == NULL) | |
3462 | { | |
3463 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3464 | if (entry == NULL) | |
3465 | return entry; | |
3466 | } | |
3467 | ||
3468 | /* Call the allocation method of the superclass. */ | |
3469 | entry = bfd_hash_newfunc (entry, table, string); | |
3470 | if (entry != NULL) | |
3471 | { | |
3472 | struct ppc_stub_hash_entry *eh; | |
3473 | ||
3474 | /* Initialize the local fields. */ | |
3475 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3476 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3477 | eh->stub_sec = NULL; |
3478 | eh->stub_offset = 0; | |
3479 | eh->target_value = 0; | |
3480 | eh->target_section = NULL; | |
721956f4 AM |
3481 | eh->h = NULL; |
3482 | eh->id_sec = NULL; | |
3483 | } | |
3484 | ||
3485 | return entry; | |
3486 | } | |
3487 | ||
3488 | /* Create an entry in the branch hash table. */ | |
3489 | ||
3490 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3491 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3492 | struct bfd_hash_table *table, | |
3493 | const char *string) | |
721956f4 AM |
3494 | { |
3495 | /* Allocate the structure if it has not already been allocated by a | |
3496 | subclass. */ | |
3497 | if (entry == NULL) | |
3498 | { | |
3499 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3500 | if (entry == NULL) | |
3501 | return entry; | |
3502 | } | |
3503 | ||
3504 | /* Call the allocation method of the superclass. */ | |
3505 | entry = bfd_hash_newfunc (entry, table, string); | |
3506 | if (entry != NULL) | |
3507 | { | |
3508 | struct ppc_branch_hash_entry *eh; | |
3509 | ||
3510 | /* Initialize the local fields. */ | |
3511 | eh = (struct ppc_branch_hash_entry *) entry; | |
3512 | eh->offset = 0; | |
3513 | eh->iter = 0; | |
3514 | } | |
3515 | ||
3516 | return entry; | |
3517 | } | |
3518 | ||
65f38f15 AM |
3519 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3520 | ||
3521 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3522 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3523 | struct bfd_hash_table *table, | |
3524 | const char *string) | |
65f38f15 AM |
3525 | { |
3526 | /* Allocate the structure if it has not already been allocated by a | |
3527 | subclass. */ | |
3528 | if (entry == NULL) | |
3529 | { | |
3530 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3531 | if (entry == NULL) | |
3532 | return entry; | |
3533 | } | |
3534 | ||
3535 | /* Call the allocation method of the superclass. */ | |
3536 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3537 | if (entry != NULL) | |
3538 | { | |
3539 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3540 | ||
b3fac117 | 3541 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3542 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3543 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3544 | ||
3545 | /* When making function calls, old ABI code references function entry | |
3546 | points (dot symbols), while new ABI code references the function | |
3547 | descriptor symbol. We need to make any combination of reference and | |
3548 | definition work together, without breaking archive linking. | |
3549 | ||
3550 | For a defined function "foo" and an undefined call to "bar": | |
3551 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3552 | "bar" too). | |
3553 | A new object defines "foo" and references "bar". | |
3554 | ||
3555 | A new object thus has no problem with its undefined symbols being | |
3556 | satisfied by definitions in an old object. On the other hand, the | |
3557 | old object won't have ".bar" satisfied by a new object. | |
3558 | ||
3559 | Keep a list of newly added dot-symbols. */ | |
3560 | ||
3561 | if (string[0] == '.') | |
3562 | { | |
3563 | struct ppc_link_hash_table *htab; | |
3564 | ||
3565 | htab = (struct ppc_link_hash_table *) table; | |
3566 | eh->u.next_dot_sym = htab->dot_syms; | |
3567 | htab->dot_syms = eh; | |
3568 | } | |
65f38f15 AM |
3569 | } |
3570 | ||
3571 | return entry; | |
3572 | } | |
3573 | ||
3574 | /* Create a ppc64 ELF linker hash table. */ | |
3575 | ||
3576 | static struct bfd_link_hash_table * | |
4ce794b7 | 3577 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3578 | { |
3579 | struct ppc_link_hash_table *htab; | |
3580 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3581 | ||
4ce794b7 | 3582 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3583 | if (htab == NULL) |
3584 | return NULL; | |
3585 | ||
66eb6687 AM |
3586 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3587 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3588 | { |
e2d34d7d | 3589 | free (htab); |
65f38f15 AM |
3590 | return NULL; |
3591 | } | |
3592 | ||
721956f4 | 3593 | /* Init the stub hash table too. */ |
66eb6687 AM |
3594 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3595 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3596 | return NULL; |
3597 | ||
3598 | /* And the branch hash table. */ | |
66eb6687 AM |
3599 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3600 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3601 | return NULL; |
3602 | ||
3254fd24 AM |
3603 | /* Initializing two fields of the union is just cosmetic. We really |
3604 | only care about glist, but when compiled on a 32-bit host the | |
3605 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3606 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3607 | htab->elf.init_got_refcount.refcount = 0; |
3608 | htab->elf.init_got_refcount.glist = NULL; | |
3609 | htab->elf.init_plt_refcount.refcount = 0; | |
3610 | htab->elf.init_plt_refcount.glist = NULL; | |
3611 | htab->elf.init_got_offset.offset = 0; | |
3612 | htab->elf.init_got_offset.glist = NULL; | |
3613 | htab->elf.init_plt_offset.offset = 0; | |
3614 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3615 | |
65f38f15 AM |
3616 | return &htab->elf.root; |
3617 | } | |
3618 | ||
721956f4 AM |
3619 | /* Free the derived linker hash table. */ |
3620 | ||
3621 | static void | |
4ce794b7 | 3622 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3623 | { |
3624 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3625 | ||
3626 | bfd_hash_table_free (&ret->stub_hash_table); | |
3627 | bfd_hash_table_free (&ret->branch_hash_table); | |
3628 | _bfd_generic_link_hash_table_free (hash); | |
3629 | } | |
3630 | ||
e717da7e AM |
3631 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3632 | ||
3633 | void | |
3634 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3635 | { | |
3636 | struct ppc_link_hash_table *htab; | |
3637 | ||
3638 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3639 | ||
3640 | /* Always hook our dynamic sections into the first bfd, which is the | |
3641 | linker created stub bfd. This ensures that the GOT header is at | |
3642 | the start of the output TOC section. */ | |
3643 | htab = ppc_hash_table (info); | |
3644 | htab->stub_bfd = abfd; | |
3645 | htab->elf.dynobj = abfd; | |
3646 | } | |
3647 | ||
721956f4 AM |
3648 | /* Build a name for an entry in the stub hash table. */ |
3649 | ||
3650 | static char * | |
4ce794b7 AM |
3651 | ppc_stub_name (const asection *input_section, |
3652 | const asection *sym_sec, | |
3653 | const struct ppc_link_hash_entry *h, | |
3654 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3655 | { |
3656 | char *stub_name; | |
3657 | bfd_size_type len; | |
3658 | ||
3659 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3660 | offsets from a sym as a branch target? In fact, we could | |
3661 | probably assume the addend is always zero. */ | |
3662 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3663 | ||
3664 | if (h) | |
3665 | { | |
3666 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3667 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3668 | if (stub_name == NULL) |
3669 | return stub_name; | |
3670 | ||
3671 | sprintf (stub_name, "%08x.%s+%x", | |
3672 | input_section->id & 0xffffffff, | |
3673 | h->elf.root.root.string, | |
3674 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3675 | } |
3676 | else | |
3677 | { | |
ad8e1ba5 | 3678 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3679 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3680 | if (stub_name == NULL) |
3681 | return stub_name; | |
3682 | ||
3683 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3684 | input_section->id & 0xffffffff, | |
3685 | sym_sec->id & 0xffffffff, | |
3686 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3687 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3688 | } |
ee75fd95 AM |
3689 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3690 | stub_name[len - 2] = 0; | |
721956f4 AM |
3691 | return stub_name; |
3692 | } | |
3693 | ||
3694 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3695 | creating the stub name takes a bit of time. */ | |
3696 | ||
3697 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3698 | ppc_get_stub_entry (const asection *input_section, |
3699 | const asection *sym_sec, | |
039b3fef | 3700 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3701 | const Elf_Internal_Rela *rel, |
3702 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3703 | { |
3704 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3705 | const asection *id_sec; |
3706 | ||
3707 | /* If this input section is part of a group of sections sharing one | |
3708 | stub section, then use the id of the first section in the group. | |
3709 | Stub names need to include a section id, as there may well be | |
3710 | more than one stub used to reach say, printf, and we need to | |
3711 | distinguish between them. */ | |
3712 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3713 | ||
b3fac117 AM |
3714 | if (h != NULL && h->u.stub_cache != NULL |
3715 | && h->u.stub_cache->h == h | |
3716 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3717 | { |
b3fac117 | 3718 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3719 | } |
3720 | else | |
3721 | { | |
3722 | char *stub_name; | |
3723 | ||
3724 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3725 | if (stub_name == NULL) | |
3726 | return NULL; | |
3727 | ||
3728 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3729 | stub_name, FALSE, FALSE); |
721956f4 | 3730 | if (h != NULL) |
b3fac117 | 3731 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3732 | |
3733 | free (stub_name); | |
3734 | } | |
3735 | ||
3736 | return stub_entry; | |
3737 | } | |
3738 | ||
3739 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3740 | stub entry are initialised. */ | |
3741 | ||
3742 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3743 | ppc_add_stub (const char *stub_name, |
3744 | asection *section, | |
3745 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3746 | { |
3747 | asection *link_sec; | |
3748 | asection *stub_sec; | |
3749 | struct ppc_stub_hash_entry *stub_entry; | |
3750 | ||
3751 | link_sec = htab->stub_group[section->id].link_sec; | |
3752 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3753 | if (stub_sec == NULL) | |
3754 | { | |
3755 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3756 | if (stub_sec == NULL) | |
3757 | { | |
d4c88bbb | 3758 | size_t namelen; |
721956f4 AM |
3759 | bfd_size_type len; |
3760 | char *s_name; | |
3761 | ||
d4c88bbb AM |
3762 | namelen = strlen (link_sec->name); |
3763 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3764 | s_name = bfd_alloc (htab->stub_bfd, len); |
3765 | if (s_name == NULL) | |
3766 | return NULL; | |
3767 | ||
d4c88bbb AM |
3768 | memcpy (s_name, link_sec->name, namelen); |
3769 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3770 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3771 | if (stub_sec == NULL) | |
3772 | return NULL; | |
3773 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3774 | } | |
3775 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3776 | } | |
3777 | ||
3778 | /* Enter this entry into the linker stub hash table. */ | |
3779 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3780 | TRUE, FALSE); |
721956f4 AM |
3781 | if (stub_entry == NULL) |
3782 | { | |
d003868e AM |
3783 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3784 | section->owner, stub_name); | |
721956f4 AM |
3785 | return NULL; |
3786 | } | |
3787 | ||
3788 | stub_entry->stub_sec = stub_sec; | |
3789 | stub_entry->stub_offset = 0; | |
3790 | stub_entry->id_sec = link_sec; | |
3791 | return stub_entry; | |
3792 | } | |
3793 | ||
82bd7b59 AM |
3794 | /* Create sections for linker generated code. */ |
3795 | ||
b34976b6 | 3796 | static bfd_boolean |
4ce794b7 | 3797 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3798 | { |
3799 | struct ppc_link_hash_table *htab; | |
3800 | flagword flags; | |
3801 | ||
3802 | htab = ppc_hash_table (info); | |
3803 | ||
3804 | /* Create .sfpr for code to save and restore fp regs. */ | |
3805 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3806 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3807 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3808 | flags); | |
82bd7b59 | 3809 | if (htab->sfpr == NULL |
82bd7b59 | 3810 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3811 | return FALSE; |
82bd7b59 | 3812 | |
721956f4 | 3813 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3814 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3815 | flags); | |
4ce794b7 | 3816 | if (htab->glink == NULL |
ee4bf8d2 | 3817 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 3818 | return FALSE; |
82bd7b59 | 3819 | |
c456f082 AM |
3820 | /* Create branch lookup table for plt_branch stubs. */ |
3821 | if (info->shared) | |
3822 | { | |
3823 | flags = (SEC_ALLOC | SEC_LOAD | |
3824 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3825 | htab->brlt | |
3826 | = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt", | |
3827 | flags); | |
3828 | } | |
3829 | else | |
3830 | { | |
3831 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3832 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3833 | htab->brlt | |
3834 | = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags); | |
3835 | } | |
3836 | ||
4ce794b7 | 3837 | if (htab->brlt == NULL |
4ce794b7 | 3838 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3839 | return FALSE; |
721956f4 | 3840 | |
c456f082 | 3841 | if (info->shared) |
721956f4 AM |
3842 | { |
3843 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3844 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
c456f082 AM |
3845 | htab->relbrlt |
3846 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt", | |
3847 | flags); | |
721956f4 | 3848 | } |
c456f082 AM |
3849 | else if (info->emitrelocations) |
3850 | { | |
3851 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3852 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3853 | htab->relbrlt | |
3854 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt", | |
3855 | flags); | |
3856 | } | |
3857 | else | |
3858 | return TRUE; | |
3859 | ||
3860 | if (!htab->relbrlt | |
3861 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3862 | return FALSE; | |
3863 | ||
b34976b6 | 3864 | return TRUE; |
82bd7b59 AM |
3865 | } |
3866 | ||
e717da7e AM |
3867 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3868 | not already done. */ | |
65f38f15 | 3869 | |
b34976b6 | 3870 | static bfd_boolean |
e717da7e | 3871 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3872 | { |
e717da7e AM |
3873 | asection *got, *relgot; |
3874 | flagword flags; | |
3875 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3876 | |
4ce794b7 | 3877 | if (!htab->got) |
e717da7e AM |
3878 | { |
3879 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3880 | return FALSE; | |
3881 | ||
3882 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3883 | if (!htab->got) | |
3884 | abort (); | |
3885 | } | |
3886 | ||
3887 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3888 | | SEC_LINKER_CREATED); | |
3889 | ||
c456f082 | 3890 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3891 | if (!got |
e717da7e AM |
3892 | || !bfd_set_section_alignment (abfd, got, 3)) |
3893 | return FALSE; | |
65f38f15 | 3894 | |
c456f082 AM |
3895 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3896 | flags | SEC_READONLY); | |
e717da7e | 3897 | if (!relgot |
e717da7e | 3898 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3899 | return FALSE; |
e717da7e AM |
3900 | |
3901 | ppc64_elf_tdata (abfd)->got = got; | |
3902 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3903 | return TRUE; |
65f38f15 | 3904 | } |
5bd4f169 | 3905 | |
82bd7b59 | 3906 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3907 | |
b34976b6 | 3908 | static bfd_boolean |
4ce794b7 | 3909 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3910 | { |
65f38f15 | 3911 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3912 | |
65f38f15 | 3913 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3914 | return FALSE; |
65f38f15 | 3915 | |
e717da7e AM |
3916 | htab = ppc_hash_table (info); |
3917 | if (!htab->got) | |
3918 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3919 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3920 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3921 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3922 | if (!info->shared) |
4ce794b7 | 3923 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3924 | |
e717da7e | 3925 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3926 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3927 | abort (); |
3928 | ||
b34976b6 | 3929 | return TRUE; |
5bd4f169 AM |
3930 | } |
3931 | ||
40d16e0b AM |
3932 | /* Merge PLT info on FROM with that on TO. */ |
3933 | ||
3934 | static void | |
3935 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3936 | struct ppc_link_hash_entry *to) | |
3937 | { | |
3938 | if (from->elf.plt.plist != NULL) | |
3939 | { | |
3940 | if (to->elf.plt.plist != NULL) | |
3941 | { | |
3942 | struct plt_entry **entp; | |
3943 | struct plt_entry *ent; | |
3944 | ||
3945 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3946 | { | |
3947 | struct plt_entry *dent; | |
3948 | ||
3949 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3950 | if (dent->addend == ent->addend) | |
3951 | { | |
3952 | dent->plt.refcount += ent->plt.refcount; | |
3953 | *entp = ent->next; | |
3954 | break; | |
3955 | } | |
3956 | if (dent == NULL) | |
3957 | entp = &ent->next; | |
3958 | } | |
3959 | *entp = to->elf.plt.plist; | |
3960 | } | |
3961 | ||
3962 | to->elf.plt.plist = from->elf.plt.plist; | |
3963 | from->elf.plt.plist = NULL; | |
3964 | } | |
3965 | } | |
3966 | ||
65f38f15 AM |
3967 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3968 | ||
3969 | static void | |
fcfa13d2 AM |
3970 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3971 | struct elf_link_hash_entry *dir, | |
3972 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3973 | { |
3974 | struct ppc_link_hash_entry *edir, *eind; | |
3975 | ||
3976 | edir = (struct ppc_link_hash_entry *) dir; | |
3977 | eind = (struct ppc_link_hash_entry *) ind; | |
3978 | ||
411e1bfb | 3979 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3980 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3981 | { |
bbd7ec4a AM |
3982 | if (edir->dyn_relocs != NULL) |
3983 | { | |
3984 | struct ppc_dyn_relocs **pp; | |
3985 | struct ppc_dyn_relocs *p; | |
3986 | ||
fcfa13d2 | 3987 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3988 | list. Merge any entries against the same section. */ |
3989 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3990 | { | |
3991 | struct ppc_dyn_relocs *q; | |
3992 | ||
3993 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3994 | if (q->sec == p->sec) | |
3995 | { | |
3996 | q->pc_count += p->pc_count; | |
3997 | q->count += p->count; | |
3998 | *pp = p->next; | |
3999 | break; | |
4000 | } | |
4001 | if (q == NULL) | |
4002 | pp = &p->next; | |
4003 | } | |
4004 | *pp = edir->dyn_relocs; | |
4005 | } | |
4006 | ||
65f38f15 AM |
4007 | edir->dyn_relocs = eind->dyn_relocs; |
4008 | eind->dyn_relocs = NULL; | |
4009 | } | |
65f38f15 | 4010 | |
6349e628 AM |
4011 | edir->is_func |= eind->is_func; |
4012 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4013 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4014 | |
81848ca0 | 4015 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4016 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4017 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4018 | if (!(ELIMINATE_COPY_RELOCS |
4019 | && eind->elf.root.type != bfd_link_hash_indirect | |
4020 | && edir->elf.dynamic_adjusted)) | |
4021 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4022 | |
f5385ebf AM |
4023 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4024 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4025 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4026 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4027 | |
4028 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4029 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4030 | return; | |
4031 | ||
81848ca0 AM |
4032 | /* Copy over got entries that we may have already seen to the |
4033 | symbol which just became indirect. */ | |
411e1bfb AM |
4034 | if (eind->elf.got.glist != NULL) |
4035 | { | |
4036 | if (edir->elf.got.glist != NULL) | |
4037 | { | |
4038 | struct got_entry **entp; | |
4039 | struct got_entry *ent; | |
4040 | ||
4041 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4042 | { | |
4043 | struct got_entry *dent; | |
4044 | ||
4045 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4046 | if (dent->addend == ent->addend | |
e717da7e | 4047 | && dent->owner == ent->owner |
411e1bfb AM |
4048 | && dent->tls_type == ent->tls_type) |
4049 | { | |
4050 | dent->got.refcount += ent->got.refcount; | |
4051 | *entp = ent->next; | |
4052 | break; | |
4053 | } | |
4054 | if (dent == NULL) | |
4055 | entp = &ent->next; | |
4056 | } | |
4057 | *entp = edir->elf.got.glist; | |
4058 | } | |
4059 | ||
4060 | edir->elf.got.glist = eind->elf.got.glist; | |
4061 | eind->elf.got.glist = NULL; | |
4062 | } | |
4063 | ||
4064 | /* And plt entries. */ | |
40d16e0b | 4065 | move_plt_plist (eind, edir); |
411e1bfb | 4066 | |
fcfa13d2 | 4067 | if (eind->elf.dynindx != -1) |
411e1bfb | 4068 | { |
fcfa13d2 AM |
4069 | if (edir->elf.dynindx != -1) |
4070 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4071 | edir->elf.dynstr_index); | |
411e1bfb AM |
4072 | edir->elf.dynindx = eind->elf.dynindx; |
4073 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4074 | eind->elf.dynindx = -1; | |
4075 | eind->elf.dynstr_index = 0; | |
4076 | } | |
411e1bfb AM |
4077 | } |
4078 | ||
8387904d AM |
4079 | /* Find the function descriptor hash entry from the given function code |
4080 | hash entry FH. Link the entries via their OH fields. */ | |
4081 | ||
4082 | static struct ppc_link_hash_entry * | |
4083 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4084 | { | |
4085 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4086 | ||
4087 | if (fdh == NULL) | |
4088 | { | |
4089 | const char *fd_name = fh->elf.root.root.string + 1; | |
4090 | ||
4091 | fdh = (struct ppc_link_hash_entry *) | |
4092 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4093 | if (fdh != NULL) | |
4094 | { | |
4095 | fdh->is_func_descriptor = 1; | |
4096 | fdh->oh = fh; | |
4097 | fh->is_func = 1; | |
4098 | fh->oh = fdh; | |
4099 | } | |
4100 | } | |
4101 | ||
4102 | return fdh; | |
4103 | } | |
4104 | ||
bb700d78 AM |
4105 | /* Make a fake function descriptor sym for the code sym FH. */ |
4106 | ||
4107 | static struct ppc_link_hash_entry * | |
4108 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4109 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4110 | { |
4111 | bfd *abfd; | |
4112 | asymbol *newsym; | |
4113 | struct bfd_link_hash_entry *bh; | |
4114 | struct ppc_link_hash_entry *fdh; | |
4115 | ||
4116 | abfd = fh->elf.root.u.undef.abfd; | |
4117 | newsym = bfd_make_empty_symbol (abfd); | |
4118 | newsym->name = fh->elf.root.root.string + 1; | |
4119 | newsym->section = bfd_und_section_ptr; | |
4120 | newsym->value = 0; | |
908b32fc | 4121 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4122 | |
4123 | bh = NULL; | |
4124 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4125 | newsym->flags, newsym->section, | |
4126 | newsym->value, NULL, FALSE, FALSE, | |
4127 | &bh)) | |
4128 | return NULL; | |
4129 | ||
4130 | fdh = (struct ppc_link_hash_entry *) bh; | |
4131 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4132 | fdh->fake = 1; |
4133 | fdh->is_func_descriptor = 1; | |
4134 | fdh->oh = fh; | |
4135 | fh->is_func = 1; | |
4136 | fh->oh = fdh; | |
bb700d78 AM |
4137 | return fdh; |
4138 | } | |
4139 | ||
8387904d AM |
4140 | /* Fix function descriptor symbols defined in .opd sections to be |
4141 | function type. */ | |
555cd476 AM |
4142 | |
4143 | static bfd_boolean | |
b3fac117 | 4144 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4145 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4146 | Elf_Internal_Sym *isym, | |
b3fac117 | 4147 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4148 | flagword *flags ATTRIBUTE_UNUSED, |
4149 | asection **sec, | |
4150 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4151 | { | |
8843416a AM |
4152 | if (*sec != NULL |
4153 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4154 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4155 | |
555cd476 AM |
4156 | return TRUE; |
4157 | } | |
4158 | ||
8387904d | 4159 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4160 | inclusion of a new ABI object archive that defines "bar". |
4161 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4162 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4163 | |
4164 | static struct elf_link_hash_entry * | |
4165 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4166 | struct bfd_link_info *info, | |
4167 | const char *name) | |
4168 | { | |
4169 | struct elf_link_hash_entry *h; | |
4170 | char *dot_name; | |
4171 | size_t len; | |
4172 | ||
4173 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4174 | if (h != NULL |
4175 | /* Don't return this sym if it is a fake function descriptor | |
4176 | created by add_symbol_adjust. */ | |
4177 | && !(h->root.type == bfd_link_hash_undefweak | |
4178 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4179 | return h; |
4180 | ||
4181 | if (name[0] == '.') | |
4182 | return h; | |
4183 | ||
4184 | len = strlen (name); | |
4185 | dot_name = bfd_alloc (abfd, len + 2); | |
4186 | if (dot_name == NULL) | |
4187 | return (struct elf_link_hash_entry *) 0 - 1; | |
4188 | dot_name[0] = '.'; | |
4189 | memcpy (dot_name + 1, name, len + 1); | |
4190 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4191 | bfd_release (abfd, dot_name); | |
4192 | return h; | |
4193 | } | |
4194 | ||
4195 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4196 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4197 | are made weak. This stops later archive searches from including an | |
4198 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4199 | prevents the linker complaining about undefined symbols. |
4200 | We also check and correct mismatched symbol visibility here. The | |
4201 | most restrictive visibility of the function descriptor and the | |
4202 | function entry symbol is used. */ | |
8387904d AM |
4203 | |
4204 | static bfd_boolean | |
b3fac117 | 4205 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4206 | { |
8387904d AM |
4207 | struct ppc_link_hash_table *htab; |
4208 | struct ppc_link_hash_entry *fdh; | |
4209 | ||
b3fac117 | 4210 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4211 | return TRUE; |
4212 | ||
b3fac117 AM |
4213 | if (eh->elf.root.type == bfd_link_hash_warning) |
4214 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4215 | |
b3fac117 AM |
4216 | if (eh->elf.root.root.string[0] != '.') |
4217 | abort (); | |
8387904d | 4218 | |
b3fac117 | 4219 | htab = ppc_hash_table (info); |
99877b66 | 4220 | fdh = get_fdh (eh, htab); |
bb700d78 | 4221 | if (fdh == NULL |
b3fac117 | 4222 | && !info->relocatable |
bb700d78 AM |
4223 | && (eh->elf.root.type == bfd_link_hash_undefined |
4224 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4225 | && eh->elf.ref_regular) | |
4226 | { | |
4227 | /* Make an undefweak function descriptor sym, which is enough to | |
4228 | pull in an --as-needed shared lib, but won't cause link | |
4229 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4230 | fdh = make_fdh (info, eh); |
bb700d78 | 4231 | if (fdh == NULL) |
b3fac117 | 4232 | return FALSE; |
bb700d78 AM |
4233 | else |
4234 | fdh->elf.ref_regular = 1; | |
4235 | } | |
e87d886e | 4236 | else if (fdh != NULL) |
8387904d | 4237 | { |
35b0ce59 AM |
4238 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4239 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4240 | if (entry_vis < descr_vis) | |
4241 | fdh->elf.other += entry_vis - descr_vis; | |
4242 | else if (entry_vis > descr_vis) | |
4243 | eh->elf.other += descr_vis - entry_vis; | |
4244 | ||
e87d886e AM |
4245 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4246 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4247 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4248 | { |
4249 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4250 | eh->was_undefined = 1; | |
4251 | htab->twiddled_syms = 1; | |
4252 | } | |
8387904d | 4253 | } |
99877b66 | 4254 | |
8387904d AM |
4255 | return TRUE; |
4256 | } | |
4257 | ||
b3fac117 AM |
4258 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4259 | ||
8387904d | 4260 | static bfd_boolean |
b3fac117 | 4261 | ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4262 | { |
99877b66 | 4263 | struct ppc_link_hash_table *htab; |
b3fac117 | 4264 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4265 | |
99877b66 | 4266 | htab = ppc_hash_table (info); |
ee75fd95 | 4267 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4268 | return TRUE; |
4269 | ||
b3fac117 AM |
4270 | if (is_ppc64_elf_target (ibfd->xvec)) |
4271 | { | |
4272 | p = &htab->dot_syms; | |
4273 | while ((eh = *p) != NULL) | |
4274 | { | |
4275 | *p = NULL; | |
4276 | if (!add_symbol_adjust (eh, info)) | |
4277 | return FALSE; | |
4278 | p = &eh->u.next_dot_sym; | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | /* Clear the list for non-ppc64 input files. */ | |
4283 | p = &htab->dot_syms; | |
4284 | while ((eh = *p) != NULL) | |
4285 | { | |
4286 | *p = NULL; | |
4287 | p = &eh->u.next_dot_sym; | |
4288 | } | |
99877b66 AM |
4289 | |
4290 | /* We need to fix the undefs list for any syms we have twiddled to | |
4291 | undef_weak. */ | |
4292 | if (htab->twiddled_syms) | |
4293 | { | |
77cfaee6 | 4294 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4295 | htab->twiddled_syms = 0; |
4296 | } | |
b3fac117 | 4297 | return TRUE; |
8387904d AM |
4298 | } |
4299 | ||
97fed1c9 JJ |
4300 | /* Undo hash table changes when an --as-needed input file is determined |
4301 | not to be needed. */ | |
4302 | ||
4303 | static bfd_boolean | |
4304 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4305 | struct bfd_link_info *info) | |
4306 | { | |
4307 | ppc_hash_table (info)->dot_syms = NULL; | |
4308 | return TRUE; | |
4309 | } | |
4310 | ||
411e1bfb | 4311 | static bfd_boolean |
4ce794b7 AM |
4312 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4313 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4314 | { |
4315 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4316 | char *local_got_tls_masks; |
411e1bfb AM |
4317 | |
4318 | if (local_got_ents == NULL) | |
4319 | { | |
4320 | bfd_size_type size = symtab_hdr->sh_info; | |
4321 | ||
e7b938ca | 4322 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4323 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4324 | if (local_got_ents == NULL) |
4325 | return FALSE; | |
4326 | elf_local_got_ents (abfd) = local_got_ents; | |
4327 | } | |
4328 | ||
4329 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4330 | { | |
4331 | struct got_entry *ent; | |
4332 | ||
4333 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4334 | if (ent->addend == r_addend |
4335 | && ent->owner == abfd | |
4336 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4337 | break; |
4338 | if (ent == NULL) | |
4339 | { | |
4340 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4341 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4342 | if (ent == NULL) |
4343 | return FALSE; | |
4344 | ent->next = local_got_ents[r_symndx]; | |
4345 | ent->addend = r_addend; | |
e717da7e | 4346 | ent->owner = abfd; |
411e1bfb AM |
4347 | ent->tls_type = tls_type; |
4348 | ent->got.refcount = 0; | |
4349 | local_got_ents[r_symndx] = ent; | |
4350 | } | |
4351 | ent->got.refcount += 1; | |
4352 | } | |
4353 | ||
e7b938ca AM |
4354 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4355 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4356 | return TRUE; |
65f38f15 AM |
4357 | } |
4358 | ||
411e1bfb | 4359 | static bfd_boolean |
4ce794b7 | 4360 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4361 | { |
411e1bfb | 4362 | struct plt_entry *ent; |
1e2f5b6e | 4363 | |
411e1bfb AM |
4364 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4365 | if (ent->addend == addend) | |
4366 | break; | |
4367 | if (ent == NULL) | |
1e2f5b6e | 4368 | { |
411e1bfb | 4369 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4370 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4371 | if (ent == NULL) |
4372 | return FALSE; | |
4373 | ent->next = eh->elf.plt.plist; | |
4374 | ent->addend = addend; | |
4375 | ent->plt.refcount = 0; | |
4376 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4377 | } |
411e1bfb | 4378 | ent->plt.refcount += 1; |
f5385ebf | 4379 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4380 | if (eh->elf.root.root.string[0] == '.' |
4381 | && eh->elf.root.root.string[1] != '\0') | |
4382 | eh->is_func = 1; | |
b34976b6 | 4383 | return TRUE; |
1e2f5b6e AM |
4384 | } |
4385 | ||
5bd4f169 | 4386 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4387 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4388 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4389 | |
b34976b6 | 4390 | static bfd_boolean |
4ce794b7 AM |
4391 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4392 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4393 | { |
65f38f15 | 4394 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4395 | Elf_Internal_Shdr *symtab_hdr; |
4396 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4397 | const Elf_Internal_Rela *rel; | |
4398 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4399 | asection *sreloc; |
1e2f5b6e | 4400 | asection **opd_sym_map; |
5bd4f169 | 4401 | |
1049f94e | 4402 | if (info->relocatable) |
b34976b6 | 4403 | return TRUE; |
5bd4f169 | 4404 | |
680a3378 AM |
4405 | /* Don't do anything special with non-loaded, non-alloced sections. |
4406 | In particular, any relocs in such sections should not affect GOT | |
4407 | and PLT reference counting (ie. we don't allow them to create GOT | |
4408 | or PLT entries), there's no possibility or desire to optimize TLS | |
4409 | relocs, and there's not much point in propagating relocs to shared | |
4410 | libs that the dynamic linker won't relocate. */ | |
4411 | if ((sec->flags & SEC_ALLOC) == 0) | |
4412 | return TRUE; | |
4413 | ||
65f38f15 | 4414 | htab = ppc_hash_table (info); |
5bd4f169 | 4415 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4416 | |
4417 | sym_hashes = elf_sym_hashes (abfd); | |
4418 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4419 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4420 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4421 | |
4422 | sreloc = NULL; | |
1e2f5b6e AM |
4423 | opd_sym_map = NULL; |
4424 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4425 | { | |
4426 | /* Garbage collection needs some extra help with .opd sections. | |
4427 | We don't want to necessarily keep everything referenced by | |
4428 | relocs in .opd, as that would keep all functions. Instead, | |
4429 | if we reference an .opd symbol (a function descriptor), we | |
4430 | want to keep the function code symbol's section. This is | |
4431 | easy for global symbols, but for local syms we need to keep | |
4432 | information about the associated function section. Later, if | |
4433 | edit_opd deletes entries, we'll use this array to adjust | |
4434 | local syms in .opd. */ | |
4435 | union opd_info { | |
4436 | asection *func_section; | |
4437 | long entry_adjust; | |
4438 | }; | |
4439 | bfd_size_type amt; | |
4440 | ||
3f764659 | 4441 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4442 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4443 | if (opd_sym_map == NULL) |
b34976b6 | 4444 | return FALSE; |
7c8fe5c4 AM |
4445 | ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map; |
4446 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
4447 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4448 | } |
5bd4f169 | 4449 | |
82bd7b59 AM |
4450 | if (htab->sfpr == NULL |
4451 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4452 | return FALSE; |
82bd7b59 | 4453 | |
5bd4f169 AM |
4454 | rel_end = relocs + sec->reloc_count; |
4455 | for (rel = relocs; rel < rel_end; rel++) | |
4456 | { | |
4457 | unsigned long r_symndx; | |
4458 | struct elf_link_hash_entry *h; | |
04c9666a | 4459 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4460 | int tls_type = 0; |
7c8fe5c4 | 4461 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4462 | |
4463 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4464 | if (r_symndx < symtab_hdr->sh_info) | |
4465 | h = NULL; | |
4466 | else | |
973a3492 L |
4467 | { |
4468 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4469 | while (h->root.type == bfd_link_hash_indirect | |
4470 | || h->root.type == bfd_link_hash_warning) | |
4471 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4472 | } | |
5bd4f169 | 4473 | |
4ce794b7 | 4474 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4475 | switch (r_type) |
5bd4f169 | 4476 | { |
411e1bfb AM |
4477 | case R_PPC64_GOT_TLSLD16: |
4478 | case R_PPC64_GOT_TLSLD16_LO: | |
4479 | case R_PPC64_GOT_TLSLD16_HI: | |
4480 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4481 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4482 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4483 | goto dogottls; |
4484 | ||
4485 | case R_PPC64_GOT_TLSGD16: | |
4486 | case R_PPC64_GOT_TLSGD16_LO: | |
4487 | case R_PPC64_GOT_TLSGD16_HI: | |
4488 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4489 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4490 | goto dogottls; |
4491 | ||
4492 | case R_PPC64_GOT_TPREL16_DS: | |
4493 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4494 | case R_PPC64_GOT_TPREL16_HI: | |
4495 | case R_PPC64_GOT_TPREL16_HA: | |
4496 | if (info->shared) | |
4497 | info->flags |= DF_STATIC_TLS; | |
4498 | tls_type = TLS_TLS | TLS_TPREL; | |
4499 | goto dogottls; | |
4500 | ||
4501 | case R_PPC64_GOT_DTPREL16_DS: | |
4502 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4503 | case R_PPC64_GOT_DTPREL16_HI: | |
4504 | case R_PPC64_GOT_DTPREL16_HA: | |
4505 | tls_type = TLS_TLS | TLS_DTPREL; | |
4506 | dogottls: | |
4507 | sec->has_tls_reloc = 1; | |
4508 | /* Fall thru */ | |
4509 | ||
5bd4f169 | 4510 | case R_PPC64_GOT16: |
5bd4f169 | 4511 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4512 | case R_PPC64_GOT16_HA: |
4513 | case R_PPC64_GOT16_HI: | |
4514 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4515 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4516 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4517 | sec->has_toc_reloc = 1; |
e717da7e AM |
4518 | if (ppc64_elf_tdata (abfd)->got == NULL |
4519 | && !create_got_section (abfd, info)) | |
b34976b6 | 4520 | return FALSE; |
5bd4f169 AM |
4521 | |
4522 | if (h != NULL) | |
4523 | { | |
411e1bfb AM |
4524 | struct ppc_link_hash_entry *eh; |
4525 | struct got_entry *ent; | |
65f38f15 | 4526 | |
411e1bfb AM |
4527 | eh = (struct ppc_link_hash_entry *) h; |
4528 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4529 | if (ent->addend == rel->r_addend | |
e717da7e | 4530 | && ent->owner == abfd |
411e1bfb AM |
4531 | && ent->tls_type == tls_type) |
4532 | break; | |
4533 | if (ent == NULL) | |
5bd4f169 | 4534 | { |
411e1bfb | 4535 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4536 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4537 | if (ent == NULL) |
b34976b6 | 4538 | return FALSE; |
411e1bfb AM |
4539 | ent->next = eh->elf.got.glist; |
4540 | ent->addend = rel->r_addend; | |
e717da7e | 4541 | ent->owner = abfd; |
411e1bfb AM |
4542 | ent->tls_type = tls_type; |
4543 | ent->got.refcount = 0; | |
4544 | eh->elf.got.glist = ent; | |
5bd4f169 | 4545 | } |
411e1bfb | 4546 | ent->got.refcount += 1; |
e7b938ca | 4547 | eh->tls_mask |= tls_type; |
5bd4f169 | 4548 | } |
411e1bfb AM |
4549 | else |
4550 | /* This is a global offset table entry for a local symbol. */ | |
4551 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4552 | rel->r_addend, tls_type)) | |
4553 | return FALSE; | |
5bd4f169 AM |
4554 | break; |
4555 | ||
5bd4f169 | 4556 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4557 | case R_PPC64_PLT16_HI: |
4558 | case R_PPC64_PLT16_LO: | |
4559 | case R_PPC64_PLT32: | |
4560 | case R_PPC64_PLT64: | |
5bd4f169 | 4561 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4562 | actually build the entry in adjust_dynamic_symbol, |
4563 | because this might be a case of linking PIC code without | |
4564 | linking in any dynamic objects, in which case we don't | |
4565 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4566 | if (h == NULL) |
4567 | { | |
4568 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4569 | table entry for a local symbol. */ |
5bd4f169 | 4570 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4571 | return FALSE; |
5bd4f169 | 4572 | } |
411e1bfb AM |
4573 | else |
4574 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4575 | rel->r_addend)) | |
4576 | return FALSE; | |
5bd4f169 AM |
4577 | break; |
4578 | ||
4579 | /* The following relocations don't need to propagate the | |
4580 | relocation if linking a shared object since they are | |
4581 | section relative. */ | |
4582 | case R_PPC64_SECTOFF: | |
4583 | case R_PPC64_SECTOFF_LO: | |
4584 | case R_PPC64_SECTOFF_HI: | |
4585 | case R_PPC64_SECTOFF_HA: | |
4586 | case R_PPC64_SECTOFF_DS: | |
4587 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4588 | case R_PPC64_DTPREL16: |
4589 | case R_PPC64_DTPREL16_LO: | |
4590 | case R_PPC64_DTPREL16_HI: | |
4591 | case R_PPC64_DTPREL16_HA: | |
4592 | case R_PPC64_DTPREL16_DS: | |
4593 | case R_PPC64_DTPREL16_LO_DS: | |
4594 | case R_PPC64_DTPREL16_HIGHER: | |
4595 | case R_PPC64_DTPREL16_HIGHERA: | |
4596 | case R_PPC64_DTPREL16_HIGHEST: | |
4597 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4598 | break; |
4599 | ||
ad8e1ba5 AM |
4600 | /* Nor do these. */ |
4601 | case R_PPC64_TOC16: | |
4602 | case R_PPC64_TOC16_LO: | |
4603 | case R_PPC64_TOC16_HI: | |
4604 | case R_PPC64_TOC16_HA: | |
4605 | case R_PPC64_TOC16_DS: | |
4606 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4607 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4608 | break; |
4609 | ||
5bd4f169 AM |
4610 | /* This relocation describes the C++ object vtable hierarchy. |
4611 | Reconstruct it for later use during GC. */ | |
4612 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4613 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4614 | return FALSE; |
5bd4f169 AM |
4615 | break; |
4616 | ||
4617 | /* This relocation describes which C++ vtable entries are actually | |
4618 | used. Record for later use during GC. */ | |
4619 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4620 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4621 | return FALSE; |
5bd4f169 AM |
4622 | break; |
4623 | ||
721956f4 AM |
4624 | case R_PPC64_REL14: |
4625 | case R_PPC64_REL14_BRTAKEN: | |
4626 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4627 | { |
4628 | asection *dest = NULL; | |
4629 | ||
4630 | /* Heuristic: If jumping outside our section, chances are | |
4631 | we are going to need a stub. */ | |
4632 | if (h != NULL) | |
4633 | { | |
4634 | /* If the sym is weak it may be overridden later, so | |
4635 | don't assume we know where a weak sym lives. */ | |
4636 | if (h->root.type == bfd_link_hash_defined) | |
4637 | dest = h->root.u.def.section; | |
4638 | } | |
4639 | else | |
4640 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4641 | sec, r_symndx); | |
4642 | if (dest != sec) | |
7c8fe5c4 | 4643 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4644 | } |
721956f4 AM |
4645 | /* Fall through. */ |
4646 | ||
5d1634d7 | 4647 | case R_PPC64_REL24: |
8387904d | 4648 | if (h != NULL) |
5d1634d7 AM |
4649 | { |
4650 | /* We may need a .plt entry if the function this reloc | |
4651 | refers to is in a shared lib. */ | |
411e1bfb AM |
4652 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4653 | rel->r_addend)) | |
4654 | return FALSE; | |
8387904d AM |
4655 | if (h == &htab->tls_get_addr->elf |
4656 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4657 | sec->has_tls_reloc = 1; |
8387904d | 4658 | else if (htab->tls_get_addr == NULL |
0112cd26 | 4659 | && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr") |
a48ebf4d AM |
4660 | && (h->root.root.string[15] == 0 |
4661 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4662 | { |
8387904d AM |
4663 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4664 | sec->has_tls_reloc = 1; | |
4665 | } | |
4666 | else if (htab->tls_get_addr_fd == NULL | |
0112cd26 | 4667 | && CONST_STRNEQ (h->root.root.string, "__tls_get_addr") |
8387904d AM |
4668 | && (h->root.root.string[14] == 0 |
4669 | || h->root.root.string[14] == '@')) | |
4670 | { | |
4671 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4672 | sec->has_tls_reloc = 1; |
4673 | } | |
4674 | } | |
4675 | break; | |
4676 | ||
4677 | case R_PPC64_TPREL64: | |
4678 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4679 | if (info->shared) | |
4680 | info->flags |= DF_STATIC_TLS; | |
4681 | goto dotlstoc; | |
4682 | ||
4683 | case R_PPC64_DTPMOD64: | |
4684 | if (rel + 1 < rel_end | |
4685 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4686 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4687 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4688 | else |
951fd09b | 4689 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4690 | goto dotlstoc; |
4691 | ||
4692 | case R_PPC64_DTPREL64: | |
4693 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4694 | if (rel != relocs | |
4695 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4696 | && rel[-1].r_offset == rel->r_offset - 8) | |
4697 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4698 | Don't mark with TLS_DTPREL. */ | |
4699 | goto dodyn; | |
4700 | ||
4701 | dotlstoc: | |
4702 | sec->has_tls_reloc = 1; | |
4703 | if (h != NULL) | |
4704 | { | |
4705 | struct ppc_link_hash_entry *eh; | |
4706 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4707 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4708 | } |
4709 | else | |
4710 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4711 | rel->r_addend, tls_type)) | |
4712 | return FALSE; | |
4713 | ||
7c8fe5c4 AM |
4714 | ppc64_sec = ppc64_elf_section_data (sec); |
4715 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4716 | { |
e7b938ca | 4717 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4718 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
7c8fe5c4 AM |
4719 | ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt); |
4720 | if (ppc64_sec->u.t_symndx == NULL) | |
411e1bfb | 4721 | return FALSE; |
7c8fe5c4 AM |
4722 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4723 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4724 | } |
4725 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
7c8fe5c4 | 4726 | ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx; |
951fd09b AM |
4727 | |
4728 | /* Mark the second slot of a GD or LD entry. | |
4729 | -1 to indicate GD and -2 to indicate LD. */ | |
4730 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
7c8fe5c4 | 4731 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4732 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
7c8fe5c4 | 4733 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4734 | goto dodyn; |
4735 | ||
4736 | case R_PPC64_TPREL16: | |
4737 | case R_PPC64_TPREL16_LO: | |
4738 | case R_PPC64_TPREL16_HI: | |
4739 | case R_PPC64_TPREL16_HA: | |
4740 | case R_PPC64_TPREL16_DS: | |
4741 | case R_PPC64_TPREL16_LO_DS: | |
4742 | case R_PPC64_TPREL16_HIGHER: | |
4743 | case R_PPC64_TPREL16_HIGHERA: | |
4744 | case R_PPC64_TPREL16_HIGHEST: | |
4745 | case R_PPC64_TPREL16_HIGHESTA: | |
4746 | if (info->shared) | |
4747 | { | |
4748 | info->flags |= DF_STATIC_TLS; | |
4749 | goto dodyn; | |
5d1634d7 AM |
4750 | } |
4751 | break; | |
4752 | ||
e86ce104 | 4753 | case R_PPC64_ADDR64: |
1e2f5b6e | 4754 | if (opd_sym_map != NULL |
1e2f5b6e | 4755 | && rel + 1 < rel_end |
4ce794b7 | 4756 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4757 | { |
8387904d AM |
4758 | if (h != NULL) |
4759 | { | |
4760 | if (h->root.root.string[0] == '.' | |
4761 | && h->root.root.string[1] != 0 | |
4762 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4763 | ; | |
4764 | else | |
4765 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4766 | } | |
4767 | else | |
4768 | { | |
4769 | asection *s; | |
1e2f5b6e | 4770 | |
8387904d AM |
4771 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4772 | r_symndx); | |
4773 | if (s == NULL) | |
4774 | return FALSE; | |
4775 | else if (s != sec) | |
3f764659 | 4776 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4777 | } |
1e2f5b6e | 4778 | } |
e86ce104 AM |
4779 | /* Fall through. */ |
4780 | ||
04c9666a | 4781 | case R_PPC64_REL30: |
5bd4f169 | 4782 | case R_PPC64_REL32: |
04c9666a | 4783 | case R_PPC64_REL64: |
65f38f15 AM |
4784 | case R_PPC64_ADDR14: |
4785 | case R_PPC64_ADDR14_BRNTAKEN: | |
4786 | case R_PPC64_ADDR14_BRTAKEN: | |
4787 | case R_PPC64_ADDR16: | |
4788 | case R_PPC64_ADDR16_DS: | |
4789 | case R_PPC64_ADDR16_HA: | |
4790 | case R_PPC64_ADDR16_HI: | |
4791 | case R_PPC64_ADDR16_HIGHER: | |
4792 | case R_PPC64_ADDR16_HIGHERA: | |
4793 | case R_PPC64_ADDR16_HIGHEST: | |
4794 | case R_PPC64_ADDR16_HIGHESTA: | |
4795 | case R_PPC64_ADDR16_LO: | |
4796 | case R_PPC64_ADDR16_LO_DS: | |
4797 | case R_PPC64_ADDR24: | |
65f38f15 | 4798 | case R_PPC64_ADDR32: |
65f38f15 AM |
4799 | case R_PPC64_UADDR16: |
4800 | case R_PPC64_UADDR32: | |
4801 | case R_PPC64_UADDR64: | |
5bd4f169 | 4802 | case R_PPC64_TOC: |
81848ca0 AM |
4803 | if (h != NULL && !info->shared) |
4804 | /* We may need a copy reloc. */ | |
f5385ebf | 4805 | h->non_got_ref = 1; |
81848ca0 | 4806 | |
41bd81ab | 4807 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4808 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4809 | break; |
e86ce104 | 4810 | |
65f38f15 AM |
4811 | /* If we are creating a shared library, and this is a reloc |
4812 | against a global symbol, or a non PC relative reloc | |
4813 | against a local symbol, then we need to copy the reloc | |
4814 | into the shared library. However, if we are linking with | |
4815 | -Bsymbolic, we do not need to copy a reloc against a | |
4816 | global symbol which is defined in an object we are | |
4817 | including in the link (i.e., DEF_REGULAR is set). At | |
4818 | this point we have not seen all the input files, so it is | |
4819 | possible that DEF_REGULAR is not set now but will be set | |
4820 | later (it is never cleared). In case of a weak definition, | |
4821 | DEF_REGULAR may be cleared later by a strong definition in | |
4822 | a shared library. We account for that possibility below by | |
f4656909 | 4823 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4824 | table entry. A similar situation occurs when creating |
4825 | shared libraries and symbol visibility changes render the | |
4826 | symbol local. | |
4827 | ||
4828 | If on the other hand, we are creating an executable, we | |
4829 | may need to keep relocations for symbols satisfied by a | |
4830 | dynamic library if we manage to avoid copy relocs for the | |
4831 | symbol. */ | |
411e1bfb | 4832 | dodyn: |
65f38f15 | 4833 | if ((info->shared |
411e1bfb | 4834 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4835 | || (h != NULL |
4836 | && (! info->symbolic | |
4837 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4838 | || !h->def_regular)))) |
f4656909 AM |
4839 | || (ELIMINATE_COPY_RELOCS |
4840 | && !info->shared | |
65f38f15 AM |
4841 | && h != NULL |
4842 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4843 | || !h->def_regular))) |
5bd4f169 | 4844 | { |
ec338859 AM |
4845 | struct ppc_dyn_relocs *p; |
4846 | struct ppc_dyn_relocs **head; | |
4847 | ||
65f38f15 AM |
4848 | /* We must copy these reloc types into the output file. |
4849 | Create a reloc section in dynobj and make room for | |
4850 | this reloc. */ | |
5bd4f169 AM |
4851 | if (sreloc == NULL) |
4852 | { | |
4853 | const char *name; | |
65f38f15 | 4854 | bfd *dynobj; |
5bd4f169 AM |
4855 | |
4856 | name = (bfd_elf_string_from_elf_section | |
4857 | (abfd, | |
4858 | elf_elfheader (abfd)->e_shstrndx, | |
4859 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4860 | if (name == NULL) | |
b34976b6 | 4861 | return FALSE; |
5bd4f169 | 4862 | |
0112cd26 | 4863 | if (! CONST_STRNEQ (name, ".rela") |
65f38f15 AM |
4864 | || strcmp (bfd_get_section_name (abfd, sec), |
4865 | name + 5) != 0) | |
4866 | { | |
4867 | (*_bfd_error_handler) | |
d003868e AM |
4868 | (_("%B: bad relocation section name `%s\'"), |
4869 | abfd, name); | |
5d1634d7 | 4870 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4871 | } |
4872 | ||
65f38f15 | 4873 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4874 | sreloc = bfd_get_section_by_name (dynobj, name); |
4875 | if (sreloc == NULL) | |
4876 | { | |
4877 | flagword flags; | |
4878 | ||
5bd4f169 | 4879 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4880 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4881 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4882 | sreloc = bfd_make_section_with_flags (dynobj, |
4883 | name, | |
4884 | flags); | |
5bd4f169 | 4885 | if (sreloc == NULL |
65f38f15 | 4886 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4887 | return FALSE; |
5bd4f169 | 4888 | } |
65f38f15 | 4889 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4890 | } |
4891 | ||
65f38f15 AM |
4892 | /* If this is a global symbol, we count the number of |
4893 | relocations we need for this symbol. */ | |
4894 | if (h != NULL) | |
4895 | { | |
ec338859 | 4896 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4897 | } |
4898 | else | |
4899 | { | |
ec338859 AM |
4900 | /* Track dynamic relocs needed for local syms too. |
4901 | We really need local syms available to do this | |
4902 | easily. Oh well. */ | |
4903 | ||
4904 | asection *s; | |
6edfbbad DJ |
4905 | void *vpp; |
4906 | ||
ec338859 AM |
4907 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4908 | sec, r_symndx); | |
4909 | if (s == NULL) | |
b34976b6 | 4910 | return FALSE; |
ec338859 | 4911 | |
6edfbbad DJ |
4912 | vpp = &elf_section_data (s)->local_dynrel; |
4913 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4914 | } |
ec338859 AM |
4915 | |
4916 | p = *head; | |
4917 | if (p == NULL || p->sec != sec) | |
4918 | { | |
4ce794b7 | 4919 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4920 | if (p == NULL) |
b34976b6 | 4921 | return FALSE; |
ec338859 AM |
4922 | p->next = *head; |
4923 | *head = p; | |
4924 | p->sec = sec; | |
4925 | p->count = 0; | |
4926 | p->pc_count = 0; | |
4927 | } | |
4928 | ||
4929 | p->count += 1; | |
411e1bfb | 4930 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4931 | p->pc_count += 1; |
65f38f15 | 4932 | } |
5bd4f169 | 4933 | break; |
65f38f15 AM |
4934 | |
4935 | default: | |
96e0dda4 | 4936 | break; |
5bd4f169 AM |
4937 | } |
4938 | } | |
4939 | ||
b34976b6 | 4940 | return TRUE; |
5bd4f169 AM |
4941 | } |
4942 | ||
8387904d AM |
4943 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4944 | of the code entry point, and its section. */ | |
4945 | ||
4946 | static bfd_vma | |
4947 | opd_entry_value (asection *opd_sec, | |
4948 | bfd_vma offset, | |
4949 | asection **code_sec, | |
4950 | bfd_vma *code_off) | |
4951 | { | |
4952 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4953 | Elf_Internal_Rela *relocs; |
8387904d | 4954 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4955 | bfd_vma val; |
8387904d | 4956 | |
4b85d634 AM |
4957 | /* No relocs implies we are linking a --just-symbols object. */ |
4958 | if (opd_sec->reloc_count == 0) | |
4959 | { | |
4960 | bfd_vma val; | |
4961 | ||
4962 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4963 | return (bfd_vma) -1; | |
3b36f7e6 | 4964 | |
4b85d634 AM |
4965 | if (code_sec != NULL) |
4966 | { | |
4967 | asection *sec, *likely = NULL; | |
4968 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4969 | if (sec->vma <= val | |
4970 | && (sec->flags & SEC_LOAD) != 0 | |
4971 | && (sec->flags & SEC_ALLOC) != 0) | |
4972 | likely = sec; | |
4973 | if (likely != NULL) | |
4974 | { | |
4975 | *code_sec = likely; | |
4976 | if (code_off != NULL) | |
4977 | *code_off = val - likely->vma; | |
4978 | } | |
4979 | } | |
4980 | return val; | |
4981 | } | |
4982 | ||
8860955f AM |
4983 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4984 | if (relocs == NULL) | |
4985 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4986 | |
8387904d | 4987 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4988 | lo = relocs; |
8387904d AM |
4989 | BFD_ASSERT (lo != NULL); |
4990 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4991 | val = (bfd_vma) -1; |
8387904d AM |
4992 | while (lo < hi) |
4993 | { | |
4994 | look = lo + (hi - lo) / 2; | |
4995 | if (look->r_offset < offset) | |
4996 | lo = look + 1; | |
4997 | else if (look->r_offset > offset) | |
4998 | hi = look; | |
4999 | else | |
5000 | { | |
5001 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
5002 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
5003 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5004 | { | |
5005 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5006 | asection *sec; |
5007 | ||
5008 | if (symndx < symtab_hdr->sh_info) | |
5009 | { | |
5010 | Elf_Internal_Sym *sym; | |
5011 | ||
5012 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5013 | if (sym == NULL) | |
5014 | { | |
5015 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5016 | symtab_hdr->sh_info, | |
5017 | 0, NULL, NULL, NULL); | |
5018 | if (sym == NULL) | |
645ea6a9 | 5019 | break; |
8387904d AM |
5020 | symtab_hdr->contents = (bfd_byte *) sym; |
5021 | } | |
5022 | ||
5023 | sym += symndx; | |
5024 | val = sym->st_value; | |
5025 | sec = NULL; | |
5026 | if ((sym->st_shndx != SHN_UNDEF | |
5027 | && sym->st_shndx < SHN_LORESERVE) | |
5028 | || sym->st_shndx > SHN_HIRESERVE) | |
5029 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5030 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5031 | } | |
5032 | else | |
5033 | { | |
5034 | struct elf_link_hash_entry **sym_hashes; | |
5035 | struct elf_link_hash_entry *rh; | |
5036 | ||
5037 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5038 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5039 | while (rh->root.type == bfd_link_hash_indirect | |
5040 | || rh->root.type == bfd_link_hash_warning) | |
5041 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5042 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5043 | || rh->root.type == bfd_link_hash_defweak); | |
5044 | val = rh->root.u.def.value; | |
5045 | sec = rh->root.u.def.section; | |
5046 | } | |
5047 | val += look->r_addend; | |
5048 | if (code_off != NULL) | |
5049 | *code_off = val; | |
5050 | if (code_sec != NULL) | |
5051 | *code_sec = sec; | |
5052 | if (sec != NULL && sec->output_section != NULL) | |
5053 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5054 | } |
5055 | break; | |
5056 | } | |
5057 | } | |
645ea6a9 | 5058 | |
645ea6a9 | 5059 | return val; |
8387904d AM |
5060 | } |
5061 | ||
64d03ab5 AM |
5062 | /* Mark sections containing dynamically referenced symbols. When |
5063 | building shared libraries, we must assume that any visible symbol is | |
5064 | referenced. */ | |
5065 | ||
5066 | static bfd_boolean | |
5067 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5068 | { | |
5069 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5070 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5071 | ||
5072 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5073 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5074 | ||
5075 | /* Dynamic linking info is on the func descriptor sym. */ | |
5076 | if (eh->oh != NULL | |
5077 | && eh->oh->is_func_descriptor | |
5078 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5079 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5080 | eh = eh->oh; | |
5081 | ||
5082 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5083 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5084 | && (eh->elf.ref_dynamic | |
5085 | || (!info->executable | |
5086 | && eh->elf.def_regular | |
5087 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5088 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5089 | { | |
5090 | asection *code_sec; | |
5091 | ||
5092 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5093 | ||
5094 | /* Function descriptor syms cause the associated | |
5095 | function code sym section to be marked. */ | |
5096 | if (eh->is_func_descriptor | |
5097 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5098 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5099 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5100 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5101 | && opd_entry_value (eh->elf.root.u.def.section, | |
5102 | eh->elf.root.u.def.value, | |
5103 | &code_sec, NULL) != (bfd_vma) -1) | |
5104 | code_sec->flags |= SEC_KEEP; | |
5105 | } | |
5106 | ||
5107 | return TRUE; | |
5108 | } | |
5109 | ||
5bd4f169 AM |
5110 | /* Return the section that should be marked against GC for a given |
5111 | relocation. */ | |
5112 | ||
5113 | static asection * | |
4ce794b7 | 5114 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 5115 | struct bfd_link_info *info, |
4ce794b7 AM |
5116 | Elf_Internal_Rela *rel, |
5117 | struct elf_link_hash_entry *h, | |
5118 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5119 | { |
ccfa59ea AM |
5120 | asection *rsec; |
5121 | ||
5122 | /* First mark all our entry sym sections. */ | |
5123 | if (info->gc_sym_list != NULL) | |
5124 | { | |
5125 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5126 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
5127 | ||
5128 | info->gc_sym_list = NULL; | |
b56cbdb9 | 5129 | for (; sym != NULL; sym = sym->next) |
ccfa59ea AM |
5130 | { |
5131 | struct ppc_link_hash_entry *eh; | |
5132 | ||
5133 | eh = (struct ppc_link_hash_entry *) | |
5134 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5135 | if (eh == NULL) | |
5136 | continue; | |
5137 | if (eh->elf.root.type != bfd_link_hash_defined | |
5138 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5139 | continue; | |
5140 | ||
c4f68ce3 AM |
5141 | if (eh->is_func_descriptor |
5142 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5143 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5144 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
5145 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5146 | && opd_entry_value (eh->elf.root.u.def.section, | |
5147 | eh->elf.root.u.def.value, | |
5148 | &rsec, NULL) != (bfd_vma) -1) | |
5149 | ; | |
ccfa59ea AM |
5150 | else |
5151 | continue; | |
5152 | ||
5153 | if (!rsec->gc_mark) | |
5154 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5155 | ||
5156 | rsec = eh->elf.root.u.def.section; | |
5157 | if (!rsec->gc_mark) | |
5158 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
ccfa59ea | 5159 | } |
ccfa59ea AM |
5160 | } |
5161 | ||
5162 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
5163 | function sections, as all functions are referenced in .opd. */ | |
5164 | rsec = NULL; | |
5165 | if (get_opd_info (sec) != NULL) | |
5166 | return rsec; | |
1e2f5b6e | 5167 | |
5bd4f169 AM |
5168 | if (h != NULL) |
5169 | { | |
04c9666a | 5170 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5171 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5172 | |
4ce794b7 | 5173 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5174 | switch (r_type) |
5bd4f169 AM |
5175 | { |
5176 | case R_PPC64_GNU_VTINHERIT: | |
5177 | case R_PPC64_GNU_VTENTRY: | |
5178 | break; | |
5179 | ||
5180 | default: | |
5181 | switch (h->root.type) | |
5182 | { | |
5183 | case bfd_link_hash_defined: | |
5184 | case bfd_link_hash_defweak: | |
ccfa59ea | 5185 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5186 | if (eh->oh != NULL |
5187 | && eh->oh->is_func_descriptor | |
5188 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5189 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5190 | eh = eh->oh; |
1e2f5b6e AM |
5191 | |
5192 | /* Function descriptor syms cause the associated | |
5193 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5194 | if (eh->is_func_descriptor |
5195 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5196 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5197 | { |
5198 | /* They also mark their opd section. */ | |
5199 | if (!eh->elf.root.u.def.section->gc_mark) | |
5200 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5201 | ppc64_elf_gc_mark_hook); | |
5202 | ||
5203 | rsec = eh->oh->elf.root.u.def.section; | |
5204 | } | |
8387904d AM |
5205 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5206 | && opd_entry_value (eh->elf.root.u.def.section, | |
5207 | eh->elf.root.u.def.value, | |
5208 | &rsec, NULL) != (bfd_vma) -1) | |
5209 | { | |
5210 | if (!eh->elf.root.u.def.section->gc_mark) | |
5211 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5212 | ppc64_elf_gc_mark_hook); | |
5213 | } | |
ccfa59ea | 5214 | else |
1e2f5b6e AM |
5215 | rsec = h->root.u.def.section; |
5216 | break; | |
5bd4f169 AM |
5217 | |
5218 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5219 | rsec = h->root.u.c.p->section; |
5220 | break; | |
5bd4f169 AM |
5221 | |
5222 | default: | |
5223 | break; | |
5224 | } | |
5225 | } | |
5226 | } | |
5227 | else | |
5228 | { | |
1e2f5b6e AM |
5229 | asection **opd_sym_section; |
5230 | ||
5231 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5232 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5233 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5234 | { |
5235 | if (!rsec->gc_mark) | |
5236 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5237 | ||
b4f4e59f | 5238 | rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5239 | } |
5bd4f169 AM |
5240 | } |
5241 | ||
1e2f5b6e | 5242 | return rsec; |
5bd4f169 AM |
5243 | } |
5244 | ||
65f38f15 AM |
5245 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5246 | section being removed. */ | |
5bd4f169 | 5247 | |
b34976b6 | 5248 | static bfd_boolean |
4ce794b7 AM |
5249 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5250 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5251 | { |
411e1bfb | 5252 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5253 | Elf_Internal_Shdr *symtab_hdr; |
5254 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5255 | struct got_entry **local_got_ents; |
5bd4f169 | 5256 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5257 | |
680a3378 AM |
5258 | if ((sec->flags & SEC_ALLOC) == 0) |
5259 | return TRUE; | |
5260 | ||
ec338859 AM |
5261 | elf_section_data (sec)->local_dynrel = NULL; |
5262 | ||
411e1bfb | 5263 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5264 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5265 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5266 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5267 | |
5268 | relend = relocs + sec->reloc_count; | |
5269 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5270 | { |
5271 | unsigned long r_symndx; | |
04c9666a | 5272 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5273 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5274 | char tls_type = 0; |
5bd4f169 | 5275 | |
a33d1f77 | 5276 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5277 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5278 | if (r_symndx >= symtab_hdr->sh_info) |
5279 | { | |
5280 | struct ppc_link_hash_entry *eh; | |
5281 | struct ppc_dyn_relocs **pp; | |
5282 | struct ppc_dyn_relocs *p; | |
5283 | ||
5284 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5285 | while (h->root.type == bfd_link_hash_indirect |
5286 | || h->root.type == bfd_link_hash_warning) | |
5287 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5288 | eh = (struct ppc_link_hash_entry *) h; |
5289 | ||
5290 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5291 | if (p->sec == sec) | |
5292 | { | |
5293 | /* Everything must go for SEC. */ | |
5294 | *pp = p->next; | |
5295 | break; | |
5296 | } | |
5297 | } | |
5298 | ||
a33d1f77 AM |
5299 | switch (r_type) |
5300 | { | |
411e1bfb AM |
5301 | case R_PPC64_GOT_TLSLD16: |
5302 | case R_PPC64_GOT_TLSLD16_LO: | |
5303 | case R_PPC64_GOT_TLSLD16_HI: | |
5304 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5305 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5306 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5307 | goto dogot; |
5308 | ||
5309 | case R_PPC64_GOT_TLSGD16: | |
5310 | case R_PPC64_GOT_TLSGD16_LO: | |
5311 | case R_PPC64_GOT_TLSGD16_HI: | |
5312 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5313 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5314 | goto dogot; |
5315 | ||
5316 | case R_PPC64_GOT_TPREL16_DS: | |
5317 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5318 | case R_PPC64_GOT_TPREL16_HI: | |
5319 | case R_PPC64_GOT_TPREL16_HA: | |
5320 | tls_type = TLS_TLS | TLS_TPREL; | |
5321 | goto dogot; | |
5322 | ||
5323 | case R_PPC64_GOT_DTPREL16_DS: | |
5324 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5325 | case R_PPC64_GOT_DTPREL16_HI: | |
5326 | case R_PPC64_GOT_DTPREL16_HA: | |
5327 | tls_type = TLS_TLS | TLS_DTPREL; | |
5328 | goto dogot; | |
5329 | ||
a33d1f77 AM |
5330 | case R_PPC64_GOT16: |
5331 | case R_PPC64_GOT16_DS: | |
5332 | case R_PPC64_GOT16_HA: | |
5333 | case R_PPC64_GOT16_HI: | |
5334 | case R_PPC64_GOT16_LO: | |
5335 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5336 | dogot: |
5337 | { | |
5338 | struct got_entry *ent; | |
5339 | ||
58ac9f71 AM |
5340 | if (h != NULL) |
5341 | ent = h->got.glist; | |
411e1bfb AM |
5342 | else |
5343 | ent = local_got_ents[r_symndx]; | |
5344 | ||
5345 | for (; ent != NULL; ent = ent->next) | |
5346 | if (ent->addend == rel->r_addend | |
e717da7e | 5347 | && ent->owner == abfd |
411e1bfb AM |
5348 | && ent->tls_type == tls_type) |
5349 | break; | |
5350 | if (ent == NULL) | |
5351 | abort (); | |
5352 | if (ent->got.refcount > 0) | |
5353 | ent->got.refcount -= 1; | |
5354 | } | |
a33d1f77 | 5355 | break; |
65f38f15 | 5356 | |
a33d1f77 AM |
5357 | case R_PPC64_PLT16_HA: |
5358 | case R_PPC64_PLT16_HI: | |
5359 | case R_PPC64_PLT16_LO: | |
5360 | case R_PPC64_PLT32: | |
5361 | case R_PPC64_PLT64: | |
721956f4 AM |
5362 | case R_PPC64_REL14: |
5363 | case R_PPC64_REL14_BRNTAKEN: | |
5364 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5365 | case R_PPC64_REL24: |
58ac9f71 | 5366 | if (h != NULL) |
5d1634d7 | 5367 | { |
411e1bfb AM |
5368 | struct plt_entry *ent; |
5369 | ||
411e1bfb AM |
5370 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5371 | if (ent->addend == rel->r_addend) | |
5372 | break; | |
5373 | if (ent == NULL) | |
5374 | abort (); | |
5375 | if (ent->plt.refcount > 0) | |
5376 | ent->plt.refcount -= 1; | |
5d1634d7 | 5377 | } |
e86ce104 | 5378 | break; |
5d1634d7 | 5379 | |
a33d1f77 AM |
5380 | default: |
5381 | break; | |
5382 | } | |
5383 | } | |
b34976b6 | 5384 | return TRUE; |
5bd4f169 AM |
5385 | } |
5386 | ||
deb0e272 AM |
5387 | /* The maximum size of .sfpr. */ |
5388 | #define SFPR_MAX (218*4) | |
5389 | ||
5390 | struct sfpr_def_parms | |
5391 | { | |
699733f6 AM |
5392 | const char name[12]; |
5393 | unsigned char lo, hi; | |
deb0e272 AM |
5394 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5395 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5396 | }; | |
5397 | ||
5398 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5399 | ||
5400 | static unsigned int | |
5401 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5402 | { | |
5403 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5404 | unsigned int i; | |
5405 | size_t len = strlen (parm->name); | |
5406 | bfd_boolean writing = FALSE; | |
699733f6 | 5407 | char sym[16]; |
deb0e272 AM |
5408 | |
5409 | memcpy (sym, parm->name, len); | |
5410 | sym[len + 2] = 0; | |
5411 | ||
5412 | for (i = parm->lo; i <= parm->hi; i++) | |
5413 | { | |
5414 | struct elf_link_hash_entry *h; | |
5415 | ||
5416 | sym[len + 0] = i / 10 + '0'; | |
5417 | sym[len + 1] = i % 10 + '0'; | |
5418 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5419 | if (h != NULL | |
f5385ebf | 5420 | && !h->def_regular) |
deb0e272 AM |
5421 | { |
5422 | h->root.type = bfd_link_hash_defined; | |
5423 | h->root.u.def.section = htab->sfpr; | |
5424 | h->root.u.def.value = htab->sfpr->size; | |
5425 | h->type = STT_FUNC; | |
f5385ebf | 5426 | h->def_regular = 1; |
deb0e272 AM |
5427 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5428 | writing = TRUE; | |
5429 | if (htab->sfpr->contents == NULL) | |
5430 | { | |
5431 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5432 | if (htab->sfpr->contents == NULL) | |
5433 | return FALSE; | |
5434 | } | |
5435 | } | |
5436 | if (writing) | |
5437 | { | |
5438 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5439 | if (i != parm->hi) | |
5440 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5441 | else | |
5442 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5443 | htab->sfpr->size = p - htab->sfpr->contents; | |
5444 | } | |
5445 | } | |
5446 | ||
5447 | return TRUE; | |
5448 | } | |
5449 | ||
5450 | static bfd_byte * | |
5451 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5452 | { | |
5453 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5454 | return p + 4; | |
5455 | } | |
5456 | ||
5457 | static bfd_byte * | |
5458 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5459 | { | |
5460 | p = savegpr0 (abfd, p, r); | |
5461 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5462 | p = p + 4; | |
5463 | bfd_put_32 (abfd, BLR, p); | |
5464 | return p + 4; | |
5465 | } | |
5466 | ||
5467 | static bfd_byte * | |
5468 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5469 | { | |
5470 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5471 | return p + 4; | |
5472 | } | |
5473 | ||
5474 | static bfd_byte * | |
5475 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5476 | { | |
5477 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5478 | p = p + 4; | |
5479 | p = restgpr0 (abfd, p, r); | |
5480 | bfd_put_32 (abfd, MTLR_R0, p); | |
5481 | p = p + 4; | |
5482 | if (r == 29) | |
5483 | { | |
5484 | p = restgpr0 (abfd, p, 30); | |
5485 | p = restgpr0 (abfd, p, 31); | |
5486 | } | |
5487 | bfd_put_32 (abfd, BLR, p); | |
5488 | return p + 4; | |
5489 | } | |
5490 | ||
5491 | static bfd_byte * | |
5492 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5493 | { | |
5494 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5495 | return p + 4; | |
5496 | } | |
5497 | ||
5498 | static bfd_byte * | |
5499 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5500 | { | |
5501 | p = savegpr1 (abfd, p, r); | |
5502 | bfd_put_32 (abfd, BLR, p); | |
5503 | return p + 4; | |
5504 | } | |
5505 | ||
5506 | static bfd_byte * | |
5507 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5508 | { | |
5509 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5510 | return p + 4; | |
5511 | } | |
5512 | ||
5513 | static bfd_byte * | |
5514 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5515 | { | |
5516 | p = restgpr1 (abfd, p, r); | |
5517 | bfd_put_32 (abfd, BLR, p); | |
5518 | return p + 4; | |
5519 | } | |
5520 | ||
5521 | static bfd_byte * | |
5522 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5523 | { | |
5524 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5525 | return p + 4; | |
5526 | } | |
5527 | ||
5528 | static bfd_byte * | |
5529 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5530 | { | |
5531 | p = savefpr (abfd, p, r); | |
5532 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5533 | p = p + 4; | |
5534 | bfd_put_32 (abfd, BLR, p); | |
5535 | return p + 4; | |
5536 | } | |
5537 | ||
5538 | static bfd_byte * | |
5539 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5540 | { | |
5541 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5542 | return p + 4; | |
5543 | } | |
5544 | ||
5545 | static bfd_byte * | |
5546 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5547 | { | |
5548 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5549 | p = p + 4; | |
5550 | p = restfpr (abfd, p, r); | |
5551 | bfd_put_32 (abfd, MTLR_R0, p); | |
5552 | p = p + 4; | |
5553 | if (r == 29) | |
5554 | { | |
5555 | p = restfpr (abfd, p, 30); | |
5556 | p = restfpr (abfd, p, 31); | |
5557 | } | |
5558 | bfd_put_32 (abfd, BLR, p); | |
5559 | return p + 4; | |
5560 | } | |
5561 | ||
5562 | static bfd_byte * | |
5563 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5564 | { | |
5565 | p = savefpr (abfd, p, r); | |
5566 | bfd_put_32 (abfd, BLR, p); | |
5567 | return p + 4; | |
5568 | } | |
5569 | ||
5570 | static bfd_byte * | |
5571 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5572 | { | |
5573 | p = restfpr (abfd, p, r); | |
5574 | bfd_put_32 (abfd, BLR, p); | |
5575 | return p + 4; | |
5576 | } | |
5577 | ||
5578 | static bfd_byte * | |
5579 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5580 | { | |
5581 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5582 | p = p + 4; | |
5583 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5584 | return p + 4; | |
5585 | } | |
5586 | ||
5587 | static bfd_byte * | |
5588 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5589 | { | |
5590 | p = savevr (abfd, p, r); | |
5591 | bfd_put_32 (abfd, BLR, p); | |
5592 | return p + 4; | |
5593 | } | |
5594 | ||
5595 | static bfd_byte * | |
5596 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5597 | { | |
5598 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5599 | p = p + 4; | |
5600 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5601 | return p + 4; | |
5602 | } | |
5603 | ||
5604 | static bfd_byte * | |
5605 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5606 | { | |
5607 | p = restvr (abfd, p, r); | |
5608 | bfd_put_32 (abfd, BLR, p); | |
5609 | return p + 4; | |
5610 | } | |
5611 | ||
e86ce104 AM |
5612 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5613 | information on function code symbol entries to their corresponding | |
5614 | function descriptor symbol entries. */ | |
deb0e272 | 5615 | |
b34976b6 | 5616 | static bfd_boolean |
4ce794b7 | 5617 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5618 | { |
e86ce104 | 5619 | struct bfd_link_info *info; |
65f38f15 | 5620 | struct ppc_link_hash_table *htab; |
411e1bfb | 5621 | struct plt_entry *ent; |
50bc7936 AM |
5622 | struct ppc_link_hash_entry *fh; |
5623 | struct ppc_link_hash_entry *fdh; | |
5624 | bfd_boolean force_local; | |
5bd4f169 | 5625 | |
50bc7936 AM |
5626 | fh = (struct ppc_link_hash_entry *) h; |
5627 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5628 | return TRUE; |
e86ce104 | 5629 | |
50bc7936 AM |
5630 | if (fh->elf.root.type == bfd_link_hash_warning) |
5631 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5632 | |
4ce794b7 | 5633 | info = inf; |
65f38f15 | 5634 | htab = ppc_hash_table (info); |
5bd4f169 | 5635 | |
c09bdfe5 AM |
5636 | /* Resolve undefined references to dot-symbols as the value |
5637 | in the function descriptor, if we have one in a regular object. | |
5638 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5639 | in dynamic objects are handled elsewhere. */ | |
5640 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5641 | && fh->was_undefined | |
5642 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5643 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5644 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5645 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5646 | fh->oh->elf.root.u.def.value, | |
5647 | &fh->elf.root.u.def.section, | |
5648 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5649 | { | |
5650 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5651 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5652 | } |
5653 | ||
e86ce104 AM |
5654 | /* If this is a function code symbol, transfer dynamic linking |
5655 | information to the function descriptor symbol. */ | |
50bc7936 | 5656 | if (!fh->is_func) |
b34976b6 | 5657 | return TRUE; |
e86ce104 | 5658 | |
50bc7936 | 5659 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5660 | if (ent->plt.refcount > 0) |
5661 | break; | |
50bc7936 AM |
5662 | if (ent == NULL |
5663 | || fh->elf.root.root.string[0] != '.' | |
5664 | || fh->elf.root.root.string[1] == '\0') | |
5665 | return TRUE; | |
5bd4f169 | 5666 | |
50bc7936 AM |
5667 | /* Find the corresponding function descriptor symbol. Create it |
5668 | as undefined if necessary. */ | |
5bd4f169 | 5669 | |
50bc7936 AM |
5670 | fdh = get_fdh (fh, htab); |
5671 | if (fdh != NULL) | |
5672 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5673 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5674 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5675 | |
50bc7936 AM |
5676 | if (fdh == NULL |
5677 | && info->shared | |
5678 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5679 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5680 | { | |
908b32fc | 5681 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5682 | if (fdh == NULL) |
5683 | return FALSE; | |
50bc7936 | 5684 | } |
648cca2c | 5685 | |
908b32fc | 5686 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5687 | code symbol is strong undefined, make the fake sym the same. |
5688 | If the function code symbol is defined, then force the fake | |
5689 | descriptor local; We can't support overriding of symbols in a | |
5690 | shared library on a fake descriptor. */ | |
908b32fc AM |
5691 | |
5692 | if (fdh != NULL | |
5693 | && fdh->fake | |
433817dd | 5694 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5695 | { |
433817dd AM |
5696 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5697 | { | |
5698 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5699 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5700 | } | |
5701 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5702 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5703 | { | |
5704 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5705 | } | |
908b32fc AM |
5706 | } |
5707 | ||
50bc7936 | 5708 | if (fdh != NULL |
f5385ebf | 5709 | && !fdh->elf.forced_local |
50bc7936 | 5710 | && (info->shared |
f5385ebf AM |
5711 | || fdh->elf.def_dynamic |
5712 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5713 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5714 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5715 | { | |
5716 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5717 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5718 | return FALSE; |
f5385ebf AM |
5719 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5720 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5721 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5722 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5723 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5724 | { |
40d16e0b | 5725 | move_plt_plist (fh, fdh); |
f5385ebf | 5726 | fdh->elf.needs_plt = 1; |
e86ce104 | 5727 | } |
50bc7936 | 5728 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5729 | fdh->oh = fh; |
5730 | fh->oh = fdh; | |
e86ce104 AM |
5731 | } |
5732 | ||
50bc7936 AM |
5733 | /* Now that the info is on the function descriptor, clear the |
5734 | function code sym info. Any function code syms for which we | |
5735 | don't have a definition in a regular file, we force local. | |
5736 | This prevents a shared library from exporting syms that have | |
5737 | been imported from another library. Function code syms that | |
5738 | are really in the library we must leave global to prevent the | |
5739 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5740 | force_local = (!fh->elf.def_regular |
5741 | || fdh == NULL | |
5742 | || !fdh->elf.def_regular | |
5743 | || fdh->elf.forced_local); | |
50bc7936 AM |
5744 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5745 | ||
b34976b6 | 5746 | return TRUE; |
e86ce104 | 5747 | } |
40b8271b | 5748 | |
e86ce104 | 5749 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5750 | this hook to a) provide some gcc support functions, and b) transfer |
5751 | dynamic linking information gathered so far on function code symbol | |
5752 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5753 | |
b34976b6 | 5754 | static bfd_boolean |
4ce794b7 AM |
5755 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5756 | struct bfd_link_info *info) | |
e86ce104 AM |
5757 | { |
5758 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5759 | unsigned int i; |
deb0e272 AM |
5760 | const struct sfpr_def_parms funcs[] = |
5761 | { | |
5762 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5763 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5764 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5765 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5766 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5767 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5768 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5769 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5770 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5771 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5772 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5773 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5774 | }; | |
e86ce104 AM |
5775 | |
5776 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5777 | if (htab->sfpr == NULL) |
5778 | /* We don't have any relocs. */ | |
b34976b6 | 5779 | return TRUE; |
82bd7b59 | 5780 | |
deb0e272 AM |
5781 | /* Provide any missing _save* and _rest* functions. */ |
5782 | htab->sfpr->size = 0; | |
5783 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5784 | if (!sfpr_define (info, &funcs[i])) | |
5785 | return FALSE; | |
82bd7b59 | 5786 | |
4ce794b7 | 5787 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5788 | |
eea6121a | 5789 | if (htab->sfpr->size == 0) |
8423293d | 5790 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5791 | |
b34976b6 | 5792 | return TRUE; |
e86ce104 AM |
5793 | } |
5794 | ||
5795 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5796 | regular object. The current definition is in some section of the | |
5797 | dynamic object, but we're not including those sections. We have to | |
5798 | change the definition to something the rest of the link can | |
5799 | understand. */ | |
5800 | ||
b34976b6 | 5801 | static bfd_boolean |
4ce794b7 AM |
5802 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5803 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5804 | { |
5805 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5806 | asection *s; |
5807 | unsigned int power_of_two; | |
5808 | ||
5809 | htab = ppc_hash_table (info); | |
5810 | ||
5811 | /* Deal with function syms. */ | |
5812 | if (h->type == STT_FUNC | |
f5385ebf | 5813 | || h->needs_plt) |
e86ce104 AM |
5814 | { |
5815 | /* Clear procedure linkage table information for any symbol that | |
5816 | won't need a .plt entry. */ | |
411e1bfb AM |
5817 | struct plt_entry *ent; |
5818 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5819 | if (ent->plt.refcount > 0) | |
5820 | break; | |
8387904d | 5821 | if (ent == NULL |
9c7a29a3 AM |
5822 | || SYMBOL_CALLS_LOCAL (info, h) |
5823 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5824 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5825 | { |
411e1bfb | 5826 | h->plt.plist = NULL; |
f5385ebf | 5827 | h->needs_plt = 0; |
40b8271b | 5828 | } |
5bd4f169 | 5829 | } |
bbd7ec4a | 5830 | else |
411e1bfb | 5831 | h->plt.plist = NULL; |
5bd4f169 AM |
5832 | |
5833 | /* If this is a weak symbol, and there is a real definition, the | |
5834 | processor independent code will have arranged for us to see the | |
5835 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5836 | if (h->u.weakdef != NULL) |
5bd4f169 | 5837 | { |
f6e332e6 AM |
5838 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5839 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5840 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5841 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5842 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5843 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5844 | return TRUE; |
5bd4f169 AM |
5845 | } |
5846 | ||
5bd4f169 AM |
5847 | /* If we are creating a shared library, we must presume that the |
5848 | only references to the symbol are via the global offset table. | |
5849 | For such cases we need not do anything here; the relocations will | |
5850 | be handled correctly by relocate_section. */ | |
5851 | if (info->shared) | |
b34976b6 | 5852 | return TRUE; |
5bd4f169 | 5853 | |
65f38f15 AM |
5854 | /* If there are no references to this symbol that do not use the |
5855 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5856 | if (!h->non_got_ref) |
b34976b6 | 5857 | return TRUE; |
65f38f15 | 5858 | |
f4656909 | 5859 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5860 | { |
f4656909 AM |
5861 | struct ppc_link_hash_entry * eh; |
5862 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5863 | |
f4656909 AM |
5864 | eh = (struct ppc_link_hash_entry *) h; |
5865 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5866 | { | |
5867 | s = p->sec->output_section; | |
5868 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5869 | break; | |
5870 | } | |
5871 | ||
5872 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5873 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5874 | if (p == NULL) | |
5875 | { | |
f5385ebf | 5876 | h->non_got_ref = 0; |
f4656909 AM |
5877 | return TRUE; |
5878 | } | |
65f38f15 AM |
5879 | } |
5880 | ||
5d35169e | 5881 | if (h->plt.plist != NULL) |
97b639ba AM |
5882 | { |
5883 | /* We should never get here, but unfortunately there are versions | |
5884 | of gcc out there that improperly (for this ABI) put initialized | |
5885 | function pointers, vtable refs and suchlike in read-only | |
5886 | sections. Allow them to proceed, but warn that this might | |
5887 | break at runtime. */ | |
5888 | (*_bfd_error_handler) | |
5889 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5890 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5891 | h->root.root.string); | |
5892 | } | |
5d35169e AM |
5893 | |
5894 | /* This is a reference to a symbol defined by a dynamic object which | |
5895 | is not a function. */ | |
5896 | ||
909272ee AM |
5897 | if (h->size == 0) |
5898 | { | |
5899 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5900 | h->root.root.string); | |
5901 | return TRUE; | |
5902 | } | |
5903 | ||
5bd4f169 AM |
5904 | /* We must allocate the symbol in our .dynbss section, which will |
5905 | become part of the .bss section of the executable. There will be | |
5906 | an entry for this symbol in the .dynsym section. The dynamic | |
5907 | object will contain position independent code, so all references | |
5908 | from the dynamic object to this symbol will go through the global | |
5909 | offset table. The dynamic linker will use the .dynsym entry to | |
5910 | determine the address it must put in the global offset table, so | |
5911 | both the dynamic object and the regular object will refer to the | |
5912 | same memory location for the variable. */ | |
5bd4f169 | 5913 | |
04c9666a AM |
5914 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5915 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5916 | runtime process image. We need to remember the offset into the |
5917 | .rela.bss section we are going to use. */ | |
5918 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5919 | { | |
eea6121a | 5920 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5921 | h->needs_copy = 1; |
5bd4f169 AM |
5922 | } |
5923 | ||
5924 | /* We need to figure out the alignment required for this symbol. I | |
5925 | have no idea how ELF linkers handle this. */ | |
5926 | power_of_two = bfd_log2 (h->size); | |
5927 | if (power_of_two > 4) | |
5928 | power_of_two = 4; | |
5929 | ||
5930 | /* Apply the required alignment. */ | |
4ce794b7 | 5931 | s = htab->dynbss; |
eea6121a | 5932 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5933 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5934 | { |
65f38f15 | 5935 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5936 | return FALSE; |
5bd4f169 AM |
5937 | } |
5938 | ||
5939 | /* Define the symbol as being at this point in the section. */ | |
5940 | h->root.u.def.section = s; | |
eea6121a | 5941 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5942 | |
5943 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5944 | s->size += h->size; |
5bd4f169 | 5945 | |
b34976b6 | 5946 | return TRUE; |
5bd4f169 AM |
5947 | } |
5948 | ||
e86ce104 AM |
5949 | /* If given a function descriptor symbol, hide both the function code |
5950 | sym and the descriptor. */ | |
5951 | static void | |
4ce794b7 AM |
5952 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5953 | struct elf_link_hash_entry *h, | |
5954 | bfd_boolean force_local) | |
e86ce104 | 5955 | { |
34814b9f | 5956 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5957 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5958 | ||
34814b9f AM |
5959 | eh = (struct ppc_link_hash_entry *) h; |
5960 | if (eh->is_func_descriptor) | |
e86ce104 | 5961 | { |
34814b9f | 5962 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5963 | |
721956f4 | 5964 | if (fh == NULL) |
d1329ca3 AM |
5965 | { |
5966 | const char *p, *q; | |
5967 | struct ppc_link_hash_table *htab; | |
5968 | char save; | |
5969 | ||
5970 | /* We aren't supposed to use alloca in BFD because on | |
5971 | systems which do not have alloca the version in libiberty | |
5972 | calls xmalloc, which might cause the program to crash | |
5973 | when it runs out of memory. This function doesn't have a | |
5974 | return status, so there's no way to gracefully return an | |
5975 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5976 | accessed; It's either a string in an ELF string table, |
5977 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5978 | |
34814b9f | 5979 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5980 | save = *p; |
5981 | *(char *) p = '.'; | |
5982 | htab = ppc_hash_table (info); | |
34814b9f AM |
5983 | fh = (struct ppc_link_hash_entry *) |
5984 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5985 | *(char *) p = save; |
5986 | ||
5987 | /* Unfortunately, if it so happens that the string we were | |
5988 | looking for was allocated immediately before this string, | |
5989 | then we overwrote the string terminator. That's the only | |
5990 | reason the lookup should fail. */ | |
5991 | if (fh == NULL) | |
5992 | { | |
34814b9f AM |
5993 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5994 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5995 | --q, --p; |
34814b9f AM |
5996 | if (q < eh->elf.root.root.string && *p == '.') |
5997 | fh = (struct ppc_link_hash_entry *) | |
5998 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5999 | } |
6000 | if (fh != NULL) | |
6001 | { | |
34814b9f AM |
6002 | eh->oh = fh; |
6003 | fh->oh = eh; | |
d1329ca3 AM |
6004 | } |
6005 | } | |
e86ce104 | 6006 | if (fh != NULL) |
34814b9f | 6007 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6008 | } |
6009 | } | |
6010 | ||
411e1bfb | 6011 | static bfd_boolean |
8843416a AM |
6012 | get_sym_h (struct elf_link_hash_entry **hp, |
6013 | Elf_Internal_Sym **symp, | |
6014 | asection **symsecp, | |
6015 | char **tls_maskp, | |
6016 | Elf_Internal_Sym **locsymsp, | |
6017 | unsigned long r_symndx, | |
6018 | bfd *ibfd) | |
411e1bfb AM |
6019 | { |
6020 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6021 | ||
6022 | if (r_symndx >= symtab_hdr->sh_info) | |
6023 | { | |
6024 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6025 | struct elf_link_hash_entry *h; | |
6026 | ||
6027 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6028 | while (h->root.type == bfd_link_hash_indirect | |
6029 | || h->root.type == bfd_link_hash_warning) | |
6030 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6031 | ||
6032 | if (hp != NULL) | |
6033 | *hp = h; | |
6034 | ||
6035 | if (symp != NULL) | |
6036 | *symp = NULL; | |
6037 | ||
6038 | if (symsecp != NULL) | |
6039 | { | |
6040 | asection *symsec = NULL; | |
6041 | if (h->root.type == bfd_link_hash_defined | |
6042 | || h->root.type == bfd_link_hash_defweak) | |
6043 | symsec = h->root.u.def.section; | |
6044 | *symsecp = symsec; | |
6045 | } | |
6046 | ||
e7b938ca | 6047 | if (tls_maskp != NULL) |
411e1bfb AM |
6048 | { |
6049 | struct ppc_link_hash_entry *eh; | |
6050 | ||
6051 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6052 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6053 | } |
6054 | } | |
6055 | else | |
6056 | { | |
6057 | Elf_Internal_Sym *sym; | |
6058 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6059 | ||
6060 | if (locsyms == NULL) | |
6061 | { | |
6062 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6063 | if (locsyms == NULL) | |
6064 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6065 | symtab_hdr->sh_info, | |
6066 | 0, NULL, NULL, NULL); | |
6067 | if (locsyms == NULL) | |
6068 | return FALSE; | |
6069 | *locsymsp = locsyms; | |
6070 | } | |
6071 | sym = locsyms + r_symndx; | |
6072 | ||
6073 | if (hp != NULL) | |
6074 | *hp = NULL; | |
6075 | ||
6076 | if (symp != NULL) | |
6077 | *symp = sym; | |
6078 | ||
6079 | if (symsecp != NULL) | |
6080 | { | |
6081 | asection *symsec = NULL; | |
6082 | if ((sym->st_shndx != SHN_UNDEF | |
6083 | && sym->st_shndx < SHN_LORESERVE) | |
6084 | || sym->st_shndx > SHN_HIRESERVE) | |
6085 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
6086 | *symsecp = symsec; | |
6087 | } | |
6088 | ||
e7b938ca | 6089 | if (tls_maskp != NULL) |
411e1bfb AM |
6090 | { |
6091 | struct got_entry **lgot_ents; | |
e7b938ca | 6092 | char *tls_mask; |
411e1bfb | 6093 | |
e7b938ca | 6094 | tls_mask = NULL; |
411e1bfb AM |
6095 | lgot_ents = elf_local_got_ents (ibfd); |
6096 | if (lgot_ents != NULL) | |
6097 | { | |
e7b938ca AM |
6098 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6099 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6100 | } |
e7b938ca | 6101 | *tls_maskp = tls_mask; |
411e1bfb AM |
6102 | } |
6103 | } | |
6104 | return TRUE; | |
6105 | } | |
6106 | ||
e7b938ca | 6107 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6108 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6109 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6110 | |
6111 | static int | |
0d4792f7 AM |
6112 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6113 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6114 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6115 | { |
6116 | unsigned long r_symndx; | |
0d4792f7 | 6117 | int next_r; |
411e1bfb AM |
6118 | struct elf_link_hash_entry *h; |
6119 | Elf_Internal_Sym *sym; | |
6120 | asection *sec; | |
6121 | bfd_vma off; | |
6122 | ||
6123 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6124 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6125 | return 0; |
411e1bfb | 6126 | |
e7b938ca | 6127 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6128 | || sec == NULL |
7c8fe5c4 | 6129 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6130 | return 1; |
411e1bfb AM |
6131 | |
6132 | /* Look inside a TOC section too. */ | |
6133 | if (h != NULL) | |
6134 | { | |
6135 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6136 | off = h->root.u.def.value; | |
6137 | } | |
6138 | else | |
6139 | off = sym->st_value; | |
6140 | off += rel->r_addend; | |
6141 | BFD_ASSERT (off % 8 == 0); | |
7c8fe5c4 AM |
6142 | r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8]; |
6143 | next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1]; | |
e7b938ca | 6144 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6145 | return 0; |
0d4792f7 AM |
6146 | if (toc_symndx != NULL) |
6147 | *toc_symndx = r_symndx; | |
6148 | if ((h == NULL | |
6149 | || ((h->root.type == bfd_link_hash_defined | |
6150 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6151 | && !h->def_dynamic)) |
0d4792f7 AM |
6152 | && (next_r == -1 || next_r == -2)) |
6153 | return 1 - next_r; | |
951fd09b | 6154 | return 1; |
411e1bfb AM |
6155 | } |
6156 | ||
754021d0 | 6157 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6158 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6159 | |
6160 | static bfd_boolean | |
6161 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6162 | { | |
6163 | struct ppc_link_hash_entry *eh; | |
6164 | asection *sym_sec; | |
6165 | long *opd_adjust; | |
6166 | ||
6167 | if (h->root.type == bfd_link_hash_indirect) | |
6168 | return TRUE; | |
6169 | ||
6170 | if (h->root.type == bfd_link_hash_warning) | |
6171 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6172 | ||
6173 | if (h->root.type != bfd_link_hash_defined | |
6174 | && h->root.type != bfd_link_hash_defweak) | |
6175 | return TRUE; | |
6176 | ||
6177 | eh = (struct ppc_link_hash_entry *) h; | |
6178 | if (eh->adjust_done) | |
6179 | return TRUE; | |
6180 | ||
6181 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6182 | opd_adjust = get_opd_info (sym_sec); |
6183 | if (opd_adjust != NULL) | |
754021d0 | 6184 | { |
3f764659 | 6185 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6186 | if (adjust == -1) |
6187 | { | |
6188 | /* This entry has been deleted. */ | |
b3fac117 | 6189 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6190 | if (dsec == NULL) |
6191 | { | |
6192 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6193 | if (elf_discarded_section (dsec)) | |
6194 | { | |
b3fac117 | 6195 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6196 | break; |
6197 | } | |
6198 | } | |
4025353c | 6199 | eh->elf.root.u.def.value = 0; |
81688140 | 6200 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6201 | } |
6202 | else | |
6203 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6204 | eh->adjust_done = 1; |
6205 | } | |
6206 | return TRUE; | |
6207 | } | |
6208 | ||
8c1d1bb8 AM |
6209 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6210 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6211 | have already been determined. */ | |
6212 | ||
6213 | static bfd_boolean | |
6214 | dec_dynrel_count (bfd_vma r_info, | |
6215 | asection *sec, | |
6216 | struct bfd_link_info *info, | |
6217 | Elf_Internal_Sym **local_syms, | |
6218 | struct elf_link_hash_entry *h, | |
6219 | asection *sym_sec) | |
6220 | { | |
6221 | enum elf_ppc64_reloc_type r_type; | |
6222 | struct ppc_dyn_relocs *p; | |
6223 | struct ppc_dyn_relocs **pp; | |
6224 | ||
6225 | /* Can this reloc be dynamic? This switch, and later tests here | |
6226 | should be kept in sync with the code in check_relocs. */ | |
6227 | r_type = ELF64_R_TYPE (r_info); | |
6228 | switch (r_type) | |
6229 | { | |
6230 | default: | |
6231 | return TRUE; | |
6232 | ||
6233 | case R_PPC64_TPREL16: | |
6234 | case R_PPC64_TPREL16_LO: | |
6235 | case R_PPC64_TPREL16_HI: | |
6236 | case R_PPC64_TPREL16_HA: | |
6237 | case R_PPC64_TPREL16_DS: | |
6238 | case R_PPC64_TPREL16_LO_DS: | |
6239 | case R_PPC64_TPREL16_HIGHER: | |
6240 | case R_PPC64_TPREL16_HIGHERA: | |
6241 | case R_PPC64_TPREL16_HIGHEST: | |
6242 | case R_PPC64_TPREL16_HIGHESTA: | |
6243 | if (!info->shared) | |
6244 | return TRUE; | |
6245 | ||
6246 | case R_PPC64_TPREL64: | |
6247 | case R_PPC64_DTPMOD64: | |
6248 | case R_PPC64_DTPREL64: | |
6249 | case R_PPC64_ADDR64: | |
6250 | case R_PPC64_REL30: | |
6251 | case R_PPC64_REL32: | |
6252 | case R_PPC64_REL64: | |
6253 | case R_PPC64_ADDR14: | |
6254 | case R_PPC64_ADDR14_BRNTAKEN: | |
6255 | case R_PPC64_ADDR14_BRTAKEN: | |
6256 | case R_PPC64_ADDR16: | |
6257 | case R_PPC64_ADDR16_DS: | |
6258 | case R_PPC64_ADDR16_HA: | |
6259 | case R_PPC64_ADDR16_HI: | |
6260 | case R_PPC64_ADDR16_HIGHER: | |
6261 | case R_PPC64_ADDR16_HIGHERA: | |
6262 | case R_PPC64_ADDR16_HIGHEST: | |
6263 | case R_PPC64_ADDR16_HIGHESTA: | |
6264 | case R_PPC64_ADDR16_LO: | |
6265 | case R_PPC64_ADDR16_LO_DS: | |
6266 | case R_PPC64_ADDR24: | |
6267 | case R_PPC64_ADDR32: | |
6268 | case R_PPC64_UADDR16: | |
6269 | case R_PPC64_UADDR32: | |
6270 | case R_PPC64_UADDR64: | |
6271 | case R_PPC64_TOC: | |
6272 | break; | |
6273 | } | |
6274 | ||
6275 | if (local_syms != NULL) | |
6276 | { | |
6277 | unsigned long r_symndx; | |
6278 | Elf_Internal_Sym *sym; | |
6279 | bfd *ibfd = sec->owner; | |
6280 | ||
6281 | r_symndx = ELF64_R_SYM (r_info); | |
6282 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6283 | return FALSE; | |
6284 | } | |
6285 | ||
6286 | if ((info->shared | |
6287 | && (MUST_BE_DYN_RELOC (r_type) | |
6288 | || (h != NULL | |
6289 | && (!info->symbolic | |
6290 | || h->root.type == bfd_link_hash_defweak | |
6291 | || !h->def_regular)))) | |
6292 | || (ELIMINATE_COPY_RELOCS | |
6293 | && !info->shared | |
6294 | && h != NULL | |
6295 | && (h->root.type == bfd_link_hash_defweak | |
6296 | || !h->def_regular))) | |
6297 | ; | |
6298 | else | |
6299 | return TRUE; | |
6300 | ||
6301 | if (h != NULL) | |
6302 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6303 | else |
6edfbbad | 6304 | { |
60124e18 AM |
6305 | if (sym_sec != NULL) |
6306 | { | |
6307 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6308 | pp = (struct ppc_dyn_relocs **) vpp; | |
6309 | } | |
6310 | else | |
6311 | { | |
6312 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6313 | pp = (struct ppc_dyn_relocs **) vpp; | |
6314 | } | |
6315 | ||
6316 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6317 | with local syms for a given section. Don't report a dynreloc | |
6318 | miscount. */ | |
6319 | if (*pp == NULL) | |
6320 | return TRUE; | |
6edfbbad | 6321 | } |
8c1d1bb8 AM |
6322 | |
6323 | while ((p = *pp) != NULL) | |
6324 | { | |
6325 | if (p->sec == sec) | |
6326 | { | |
6327 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6328 | p->pc_count -= 1; | |
6329 | p->count -= 1; | |
6330 | if (p->count == 0) | |
6331 | *pp = p->next; | |
6332 | return TRUE; | |
6333 | } | |
6334 | pp = &p->next; | |
6335 | } | |
6336 | ||
6337 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6338 | sec->owner, sec); | |
6339 | bfd_set_error (bfd_error_bad_value); | |
6340 | return FALSE; | |
6341 | } | |
6342 | ||
754021d0 AM |
6343 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6344 | only remove those associated with functions in discarded link-once | |
6345 | sections, or weakly defined functions that have been overridden. It | |
6346 | would be possible to remove many more entries for statically linked | |
6347 | applications. */ | |
6348 | ||
b34976b6 | 6349 | bfd_boolean |
3f764659 | 6350 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
b4f4e59f | 6351 | bfd_boolean no_opd_opt, |
3f764659 | 6352 | bfd_boolean non_overlapping) |
1e2f5b6e AM |
6353 | { |
6354 | bfd *ibfd; | |
754021d0 | 6355 | bfd_boolean some_edited = FALSE; |
3f764659 | 6356 | asection *need_pad = NULL; |
1e2f5b6e | 6357 | |
411e1bfb | 6358 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6359 | { |
6360 | asection *sec; | |
6361 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6362 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6363 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6364 | struct elf_link_hash_entry **sym_hashes; |
6365 | bfd_vma offset; | |
d6fe2dc1 | 6366 | bfd_size_type amt; |
4025353c | 6367 | long *opd_adjust; |
3f764659 JJ |
6368 | bfd_boolean need_edit, add_aux_fields; |
6369 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6370 | |
6371 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6372 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6373 | continue; |
6374 | ||
3f764659 | 6375 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6376 | opd_adjust = get_opd_info (sec); |
6377 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6378 | { |
4b85d634 AM |
6379 | /* check_relocs hasn't been called. Must be a ld -r link |
6380 | or --just-symbols object. */ | |
b4f4e59f | 6381 | opd_adjust = bfd_alloc (obfd, amt); |
46de2a7c AM |
6382 | if (opd_adjust == NULL) |
6383 | return FALSE; | |
7c8fe5c4 AM |
6384 | ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust; |
6385 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
6386 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
d6fe2dc1 | 6387 | } |
4025353c | 6388 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6389 | |
b4f4e59f AM |
6390 | if (no_opd_opt) |
6391 | continue; | |
6392 | ||
4b85d634 AM |
6393 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6394 | continue; | |
6395 | ||
1e2f5b6e AM |
6396 | if (sec->output_section == bfd_abs_section_ptr) |
6397 | continue; | |
6398 | ||
6399 | /* Look through the section relocs. */ | |
6400 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6401 | continue; | |
6402 | ||
6cdc0ccc | 6403 | local_syms = NULL; |
1e2f5b6e AM |
6404 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6405 | sym_hashes = elf_sym_hashes (ibfd); | |
6406 | ||
6407 | /* Read the relocations. */ | |
4ce794b7 | 6408 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6409 | info->keep_memory); |
1e2f5b6e | 6410 | if (relstart == NULL) |
b34976b6 | 6411 | return FALSE; |
1e2f5b6e AM |
6412 | |
6413 | /* First run through the relocs to check they are sane, and to | |
6414 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6415 | need_edit = FALSE; |
3f764659 | 6416 | need_pad = sec; |
1e2f5b6e AM |
6417 | offset = 0; |
6418 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6419 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6420 | { |
04c9666a | 6421 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6422 | unsigned long r_symndx; |
6423 | asection *sym_sec; | |
6424 | struct elf_link_hash_entry *h; | |
6425 | Elf_Internal_Sym *sym; | |
6426 | ||
3f764659 | 6427 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6428 | only interested in the reloc pointing to a function entry |
6429 | point. */ | |
50bc7936 AM |
6430 | if (rel->r_offset != offset |
6431 | || rel + 1 >= relend | |
6432 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6433 | { |
6434 | /* If someone messes with .opd alignment then after a | |
6435 | "ld -r" we might have padding in the middle of .opd. | |
6436 | Also, there's nothing to prevent someone putting | |
6437 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6438 | optimization for them! */ |
3f764659 | 6439 | broken_opd: |
1e2f5b6e | 6440 | (*_bfd_error_handler) |
d003868e | 6441 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6442 | need_edit = FALSE; |
1e2f5b6e AM |
6443 | break; |
6444 | } | |
6445 | ||
50bc7936 AM |
6446 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6447 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6448 | { | |
6449 | (*_bfd_error_handler) | |
d003868e AM |
6450 | (_("%B: unexpected reloc type %u in .opd section"), |
6451 | ibfd, r_type); | |
50bc7936 AM |
6452 | need_edit = FALSE; |
6453 | break; | |
6454 | } | |
6455 | ||
1e2f5b6e | 6456 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6457 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6458 | r_symndx, ibfd)) | |
50bc7936 | 6459 | goto error_ret; |
1e2f5b6e AM |
6460 | |
6461 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6462 | { | |
411e1bfb AM |
6463 | const char *sym_name; |
6464 | if (h != NULL) | |
6465 | sym_name = h->root.root.string; | |
6466 | else | |
26c61ae5 L |
6467 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6468 | sym_sec); | |
411e1bfb | 6469 | |
1e2f5b6e | 6470 | (*_bfd_error_handler) |
d003868e AM |
6471 | (_("%B: undefined sym `%s' in .opd section"), |
6472 | ibfd, sym_name); | |
b34976b6 | 6473 | need_edit = FALSE; |
1e2f5b6e AM |
6474 | break; |
6475 | } | |
6476 | ||
51020317 AM |
6477 | /* opd entries are always for functions defined in the |
6478 | current input bfd. If the symbol isn't defined in the | |
6479 | input bfd, then we won't be using the function in this | |
6480 | bfd; It must be defined in a linkonce section in another | |
6481 | bfd, or is weak. It's also possible that we are | |
6482 | discarding the function due to a linker script /DISCARD/, | |
6483 | which we test for via the output_section. */ | |
6484 | if (sym_sec->owner != ibfd | |
6485 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6486 | need_edit = TRUE; |
1e2f5b6e | 6487 | |
50bc7936 | 6488 | rel += 2; |
3f764659 JJ |
6489 | if (rel == relend |
6490 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6491 | { | |
6492 | if (sec->size == offset + 24) | |
6493 | { | |
6494 | need_pad = NULL; | |
6495 | break; | |
6496 | } | |
6497 | if (rel == relend && sec->size == offset + 16) | |
6498 | { | |
6499 | cnt_16b++; | |
6500 | break; | |
6501 | } | |
6502 | goto broken_opd; | |
6503 | } | |
6504 | ||
6505 | if (rel->r_offset == offset + 24) | |
6506 | offset += 24; | |
6507 | else if (rel->r_offset != offset + 16) | |
6508 | goto broken_opd; | |
6509 | else if (rel + 1 < relend | |
6510 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6511 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6512 | { | |
6513 | offset += 16; | |
6514 | cnt_16b++; | |
6515 | } | |
6516 | else if (rel + 2 < relend | |
6517 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6518 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6519 | { | |
6520 | offset += 24; | |
6521 | rel += 1; | |
6522 | } | |
6523 | else | |
6524 | goto broken_opd; | |
1e2f5b6e AM |
6525 | } |
6526 | ||
3f764659 JJ |
6527 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6528 | ||
6529 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6530 | { |
6531 | Elf_Internal_Rela *write_rel; | |
6532 | bfd_byte *rptr, *wptr; | |
3f764659 | 6533 | bfd_byte *new_contents = NULL; |
b34976b6 | 6534 | bfd_boolean skip; |
3f764659 | 6535 | long opd_ent_size; |
1e2f5b6e AM |
6536 | |
6537 | /* This seems a waste of time as input .opd sections are all | |
6538 | zeros as generated by gcc, but I suppose there's no reason | |
6539 | this will always be so. We might start putting something in | |
6540 | the third word of .opd entries. */ | |
6541 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6542 | { | |
eea6121a AM |
6543 | bfd_byte *loc; |
6544 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6545 | { |
eea6121a AM |
6546 | if (loc != NULL) |
6547 | free (loc); | |
50bc7936 | 6548 | error_ret: |
6cdc0ccc AM |
6549 | if (local_syms != NULL |
6550 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6551 | free (local_syms); | |
6cdc0ccc AM |
6552 | if (elf_section_data (sec)->relocs != relstart) |
6553 | free (relstart); | |
b34976b6 | 6554 | return FALSE; |
6cdc0ccc | 6555 | } |
1e2f5b6e AM |
6556 | sec->contents = loc; |
6557 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6558 | } | |
6559 | ||
6560 | elf_section_data (sec)->relocs = relstart; | |
6561 | ||
3f764659 | 6562 | new_contents = sec->contents; |
3f764659 JJ |
6563 | if (add_aux_fields) |
6564 | { | |
6565 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6566 | if (new_contents == NULL) | |
6567 | return FALSE; | |
6568 | need_pad = FALSE; | |
3f764659 | 6569 | } |
b4f4e59f AM |
6570 | wptr = new_contents; |
6571 | rptr = sec->contents; | |
3f764659 | 6572 | |
1e2f5b6e | 6573 | write_rel = relstart; |
b34976b6 | 6574 | skip = FALSE; |
1e2f5b6e | 6575 | offset = 0; |
3f764659 | 6576 | opd_ent_size = 0; |
1e2f5b6e AM |
6577 | for (rel = relstart; rel < relend; rel++) |
6578 | { | |
50bc7936 AM |
6579 | unsigned long r_symndx; |
6580 | asection *sym_sec; | |
6581 | struct elf_link_hash_entry *h; | |
6582 | Elf_Internal_Sym *sym; | |
6583 | ||
6584 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6585 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6586 | r_symndx, ibfd)) |
50bc7936 AM |
6587 | goto error_ret; |
6588 | ||
1e2f5b6e AM |
6589 | if (rel->r_offset == offset) |
6590 | { | |
50bc7936 | 6591 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6592 | |
6593 | /* See if the .opd entry is full 24 byte or | |
6594 | 16 byte (with fd_aux entry overlapped with next | |
6595 | fd_func). */ | |
6596 | opd_ent_size = 24; | |
6597 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6598 | || (rel + 3 < relend | |
6599 | && rel[2].r_offset == offset + 16 | |
6600 | && rel[3].r_offset == offset + 24 | |
6601 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6602 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6603 | opd_ent_size = 16; | |
6604 | ||
4025353c AM |
6605 | if (h != NULL |
6606 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6607 | { |
6608 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6609 | ppc_hash_table (info)); | |
6610 | if (fdh != NULL | |
6611 | && fdh->elf.root.type != bfd_link_hash_defined | |
6612 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6613 | fdh = NULL; | |
6614 | } | |
1e2f5b6e | 6615 | |
51020317 AM |
6616 | skip = (sym_sec->owner != ibfd |
6617 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6618 | if (skip) |
6619 | { | |
4025353c | 6620 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6621 | { |
6622 | /* Arrange for the function descriptor sym | |
6623 | to be dropped. */ | |
d6fe2dc1 AM |
6624 | fdh->elf.root.u.def.value = 0; |
6625 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6626 | } |
3f764659 | 6627 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6628 | } |
6629 | else | |
1e2f5b6e AM |
6630 | { |
6631 | /* We'll be keeping this opd entry. */ | |
6632 | ||
4025353c | 6633 | if (fdh != NULL) |
1e2f5b6e | 6634 | { |
754021d0 AM |
6635 | /* Redefine the function descriptor symbol to |
6636 | this location in the opd section. It is | |
6637 | necessary to update the value here rather | |
6638 | than using an array of adjustments as we do | |
6639 | for local symbols, because various places | |
6640 | in the generic ELF code use the value | |
6641 | stored in u.def.value. */ | |
3f764659 | 6642 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6643 | fdh->adjust_done = 1; |
1e2f5b6e | 6644 | } |
754021d0 AM |
6645 | |
6646 | /* Local syms are a bit tricky. We could | |
6647 | tweak them as they can be cached, but | |
6648 | we'd need to look through the local syms | |
6649 | for the function descriptor sym which we | |
6650 | don't have at the moment. So keep an | |
6651 | array of adjustments. */ | |
3f764659 JJ |
6652 | opd_adjust[rel->r_offset / 8] |
6653 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6654 | |
6655 | if (wptr != rptr) | |
3f764659 JJ |
6656 | memcpy (wptr, rptr, opd_ent_size); |
6657 | wptr += opd_ent_size; | |
6658 | if (add_aux_fields && opd_ent_size == 16) | |
6659 | { | |
6660 | memset (wptr, '\0', 8); | |
6661 | wptr += 8; | |
6662 | } | |
1e2f5b6e | 6663 | } |
3f764659 JJ |
6664 | rptr += opd_ent_size; |
6665 | offset += opd_ent_size; | |
1e2f5b6e AM |
6666 | } |
6667 | ||
50bc7936 AM |
6668 | if (skip) |
6669 | { | |
60124e18 AM |
6670 | if (!NO_OPD_RELOCS |
6671 | && !info->relocatable | |
18d944df AM |
6672 | && !dec_dynrel_count (rel->r_info, sec, info, |
6673 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6674 | goto error_ret; |
50bc7936 AM |
6675 | } |
6676 | else | |
1e2f5b6e | 6677 | { |
50bc7936 AM |
6678 | /* We need to adjust any reloc offsets to point to the |
6679 | new opd entries. While we're at it, we may as well | |
6680 | remove redundant relocs. */ | |
3f764659 | 6681 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6682 | if (write_rel != rel) |
6683 | memcpy (write_rel, rel, sizeof (*rel)); | |
6684 | ++write_rel; | |
6685 | } | |
6686 | } | |
6687 | ||
3f764659 | 6688 | sec->size = wptr - new_contents; |
1e2f5b6e | 6689 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6690 | if (add_aux_fields) |
6691 | { | |
6692 | free (sec->contents); | |
6693 | sec->contents = new_contents; | |
6694 | } | |
6695 | ||
05bf9422 | 6696 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6697 | elf_bfd_final_link if we are emitting relocs. */ |
6698 | elf_section_data (sec)->rel_hdr.sh_size | |
6699 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6700 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6701 | some_edited = TRUE; |
1e2f5b6e | 6702 | } |
6cdc0ccc | 6703 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6704 | free (relstart); |
6cdc0ccc | 6705 | |
411e1bfb AM |
6706 | if (local_syms != NULL |
6707 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6708 | { | |
6709 | if (!info->keep_memory) | |
6710 | free (local_syms); | |
6711 | else | |
6712 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6713 | } | |
6714 | } | |
6715 | ||
754021d0 AM |
6716 | if (some_edited) |
6717 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6718 | ||
3f764659 JJ |
6719 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6720 | long, add a 8 byte padding after it. */ | |
6721 | if (need_pad != NULL && !info->relocatable) | |
6722 | { | |
6723 | bfd_byte *p; | |
6724 | ||
6725 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6726 | { | |
6727 | BFD_ASSERT (need_pad->size > 0); | |
6728 | ||
6729 | p = bfd_malloc (need_pad->size + 8); | |
6730 | if (p == NULL) | |
6731 | return FALSE; | |
699733f6 | 6732 | |
3f764659 JJ |
6733 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6734 | p, 0, need_pad->size)) | |
6735 | return FALSE; | |
6736 | ||
6737 | need_pad->contents = p; | |
6738 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6739 | } | |
6740 | else | |
6741 | { | |
6742 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6743 | if (p == NULL) | |
6744 | return FALSE; | |
6745 | ||
6746 | need_pad->contents = p; | |
6747 | } | |
6748 | ||
6749 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6750 | need_pad->size += 8; | |
6751 | } | |
6752 | ||
411e1bfb AM |
6753 | return TRUE; |
6754 | } | |
6755 | ||
e1918d23 | 6756 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6757 | |
e1918d23 | 6758 | asection * |
4ce794b7 | 6759 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6760 | { |
411e1bfb AM |
6761 | struct ppc_link_hash_table *htab; |
6762 | ||
411e1bfb | 6763 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6764 | if (htab->tls_get_addr != NULL) |
6765 | { | |
8387904d | 6766 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6767 | |
8387904d AM |
6768 | while (h->elf.root.type == bfd_link_hash_indirect |
6769 | || h->elf.root.type == bfd_link_hash_warning) | |
6770 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6771 | |
6772 | htab->tls_get_addr = h; | |
8387904d AM |
6773 | |
6774 | if (htab->tls_get_addr_fd == NULL | |
6775 | && h->oh != NULL | |
c4f68ce3 AM |
6776 | && h->oh->is_func_descriptor |
6777 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6778 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6779 | htab->tls_get_addr_fd = h->oh; |
6780 | } | |
6781 | ||
6782 | if (htab->tls_get_addr_fd != NULL) | |
6783 | { | |
6784 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6785 | ||
6786 | while (h->elf.root.type == bfd_link_hash_indirect | |
6787 | || h->elf.root.type == bfd_link_hash_warning) | |
6788 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6789 | ||
6790 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6791 | } |
6792 | ||
e1918d23 | 6793 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6794 | } |
411e1bfb | 6795 | |
951fd09b AM |
6796 | /* Run through all the TLS relocs looking for optimization |
6797 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6798 | a preliminary section layout so that we know the TLS segment | |
6799 | offsets. We can't optimize earlier because some optimizations need | |
6800 | to know the tp offset, and we need to optimize before allocating | |
6801 | dynamic relocations. */ | |
6802 | ||
6803 | bfd_boolean | |
4ce794b7 | 6804 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6805 | { |
6806 | bfd *ibfd; | |
6807 | asection *sec; | |
6808 | struct ppc_link_hash_table *htab; | |
6809 | ||
1049f94e | 6810 | if (info->relocatable || info->shared) |
411e1bfb AM |
6811 | return TRUE; |
6812 | ||
951fd09b | 6813 | htab = ppc_hash_table (info); |
411e1bfb AM |
6814 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6815 | { | |
6816 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6817 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6818 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6819 | |
30038c59 AM |
6820 | /* Look at all the sections for this file, with TOC last. */ |
6821 | for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next | |
6822 | : ibfd->sections); | |
6823 | sec != NULL; | |
6824 | sec = (sec == toc ? NULL | |
6825 | : sec->next == NULL ? toc | |
6826 | : sec->next == toc && toc->next ? toc->next | |
6827 | : sec->next)) | |
411e1bfb AM |
6828 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) |
6829 | { | |
6830 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6831 | int expecting_tls_get_addr; | |
30038c59 | 6832 | long toc_ref_index = 0; |
411e1bfb AM |
6833 | |
6834 | /* Read the relocations. */ | |
4ce794b7 | 6835 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6836 | info->keep_memory); |
411e1bfb AM |
6837 | if (relstart == NULL) |
6838 | return FALSE; | |
6839 | ||
6840 | expecting_tls_get_addr = 0; | |
6841 | relend = relstart + sec->reloc_count; | |
6842 | for (rel = relstart; rel < relend; rel++) | |
6843 | { | |
6844 | enum elf_ppc64_reloc_type r_type; | |
6845 | unsigned long r_symndx; | |
6846 | struct elf_link_hash_entry *h; | |
6847 | Elf_Internal_Sym *sym; | |
6848 | asection *sym_sec; | |
e7b938ca AM |
6849 | char *tls_mask; |
6850 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6851 | bfd_vma value; |
951fd09b | 6852 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6853 | |
6854 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6855 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6856 | r_symndx, ibfd)) |
6857 | { | |
6858 | err_free_rel: | |
6859 | if (elf_section_data (sec)->relocs != relstart) | |
6860 | free (relstart); | |
30038c59 AM |
6861 | if (toc_ref != NULL) |
6862 | free (toc_ref); | |
411e1bfb AM |
6863 | if (locsyms != NULL |
6864 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6865 | != (unsigned char *) locsyms)) | |
6866 | free (locsyms); | |
6867 | return FALSE; | |
6868 | } | |
6869 | ||
6870 | if (h != NULL) | |
6871 | { | |
6872 | if (h->root.type != bfd_link_hash_defined | |
6873 | && h->root.type != bfd_link_hash_defweak) | |
6874 | continue; | |
6875 | value = h->root.u.def.value; | |
6876 | } | |
6877 | else | |
4025353c AM |
6878 | /* Symbols referenced by TLS relocs must be of type |
6879 | STT_TLS. So no need for .opd local sym adjust. */ | |
6880 | value = sym->st_value; | |
951fd09b | 6881 | |
411e1bfb | 6882 | ok_tprel = FALSE; |
951fd09b AM |
6883 | is_local = FALSE; |
6884 | if (h == NULL | |
f5385ebf | 6885 | || !h->def_dynamic) |
411e1bfb | 6886 | { |
951fd09b | 6887 | is_local = TRUE; |
411e1bfb AM |
6888 | value += sym_sec->output_offset; |
6889 | value += sym_sec->output_section->vma; | |
e1918d23 | 6890 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6891 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6892 | < (bfd_vma) 1 << 32); | |
6893 | } | |
6894 | ||
4ce794b7 | 6895 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6896 | switch (r_type) |
6897 | { | |
6898 | case R_PPC64_GOT_TLSLD16: | |
6899 | case R_PPC64_GOT_TLSLD16_LO: | |
6900 | case R_PPC64_GOT_TLSLD16_HI: | |
6901 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6902 | /* These relocs should never be against a symbol |
6903 | defined in a shared lib. Leave them alone if | |
6904 | that turns out to be the case. */ | |
e717da7e | 6905 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6906 | if (!is_local) |
6907 | continue; | |
6908 | ||
951fd09b AM |
6909 | /* LD -> LE */ |
6910 | tls_set = 0; | |
6911 | tls_clear = TLS_LD; | |
e7b938ca | 6912 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6913 | expecting_tls_get_addr = 1; |
6914 | break; | |
6915 | ||
6916 | case R_PPC64_GOT_TLSGD16: | |
6917 | case R_PPC64_GOT_TLSGD16_LO: | |
6918 | case R_PPC64_GOT_TLSGD16_HI: | |
6919 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6920 | if (ok_tprel) |
411e1bfb AM |
6921 | /* GD -> LE */ |
6922 | tls_set = 0; | |
6923 | else | |
6924 | /* GD -> IE */ | |
951fd09b AM |
6925 | tls_set = TLS_TLS | TLS_TPRELGD; |
6926 | tls_clear = TLS_GD; | |
e7b938ca | 6927 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6928 | expecting_tls_get_addr = 1; |
6929 | break; | |
6930 | ||
6931 | case R_PPC64_GOT_TPREL16_DS: | |
6932 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6933 | case R_PPC64_GOT_TPREL16_HI: | |
6934 | case R_PPC64_GOT_TPREL16_HA: | |
6935 | expecting_tls_get_addr = 0; | |
6936 | if (ok_tprel) | |
6937 | { | |
6938 | /* IE -> LE */ | |
6939 | tls_set = 0; | |
6940 | tls_clear = TLS_TPREL; | |
e7b938ca | 6941 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6942 | break; |
6943 | } | |
6944 | else | |
6945 | continue; | |
6946 | ||
6947 | case R_PPC64_REL14: | |
6948 | case R_PPC64_REL14_BRTAKEN: | |
6949 | case R_PPC64_REL14_BRNTAKEN: | |
6950 | case R_PPC64_REL24: | |
6951 | if (h != NULL | |
8387904d AM |
6952 | && (h == &htab->tls_get_addr->elf |
6953 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6954 | { |
6955 | if (!expecting_tls_get_addr | |
6956 | && rel != relstart | |
6957 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6958 | == R_PPC64_TOC16) | |
6959 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6960 | == R_PPC64_TOC16_LO))) | |
6961 | { | |
6962 | /* Check for toc tls entries. */ | |
6963 | char *toc_tls; | |
951fd09b | 6964 | int retval; |
411e1bfb | 6965 | |
0d4792f7 | 6966 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6967 | rel - 1, ibfd); |
6968 | if (retval == 0) | |
411e1bfb | 6969 | goto err_free_rel; |
30038c59 AM |
6970 | if (retval > 1 && toc_tls != NULL) |
6971 | { | |
6972 | expecting_tls_get_addr = 1; | |
6973 | if (toc_ref != NULL) | |
6974 | toc_ref[toc_ref_index] = 1; | |
6975 | } | |
411e1bfb AM |
6976 | } |
6977 | ||
6978 | if (expecting_tls_get_addr) | |
6979 | { | |
6980 | struct plt_entry *ent; | |
6981 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6982 | if (ent->addend == 0) | |
6983 | { | |
6984 | if (ent->plt.refcount > 0) | |
6985 | ent->plt.refcount -= 1; | |
6986 | break; | |
6987 | } | |
6988 | } | |
6989 | } | |
6990 | expecting_tls_get_addr = 0; | |
6991 | continue; | |
6992 | ||
30038c59 AM |
6993 | case R_PPC64_TOC16: |
6994 | case R_PPC64_TOC16_LO: | |
6995 | case R_PPC64_TLS: | |
6996 | expecting_tls_get_addr = 0; | |
6997 | if (sym_sec == toc && toc != NULL) | |
6998 | { | |
6999 | /* Mark this toc entry as referenced by a TLS | |
7000 | code sequence. We can do that now in the | |
7001 | case of R_PPC64_TLS, and after checking for | |
7002 | tls_get_addr for the TOC16 relocs. */ | |
7003 | if (toc_ref == NULL) | |
7004 | { | |
7005 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7006 | if (toc_ref == NULL) | |
7007 | goto err_free_rel; | |
7008 | } | |
7009 | if (h != NULL) | |
7010 | value = h->root.u.def.value; | |
7011 | else | |
7012 | value = sym->st_value; | |
7013 | value += rel->r_addend; | |
7014 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7015 | toc_ref_index = value / 8; | |
7016 | if (r_type == R_PPC64_TLS) | |
7017 | toc_ref[toc_ref_index] = 1; | |
7018 | } | |
7019 | continue; | |
7020 | ||
411e1bfb AM |
7021 | case R_PPC64_TPREL64: |
7022 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7023 | if (sec != toc |
7024 | || toc_ref == NULL | |
7025 | || !toc_ref[rel->r_offset / 8]) | |
7026 | continue; | |
411e1bfb AM |
7027 | if (ok_tprel) |
7028 | { | |
7029 | /* IE -> LE */ | |
7030 | tls_set = TLS_EXPLICIT; | |
7031 | tls_clear = TLS_TPREL; | |
7032 | break; | |
7033 | } | |
7034 | else | |
7035 | continue; | |
7036 | ||
7037 | case R_PPC64_DTPMOD64: | |
7038 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7039 | if (sec != toc |
7040 | || toc_ref == NULL | |
7041 | || !toc_ref[rel->r_offset / 8]) | |
7042 | continue; | |
951fd09b AM |
7043 | if (rel + 1 < relend |
7044 | && (rel[1].r_info | |
7045 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7046 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 7047 | { |
951fd09b | 7048 | if (ok_tprel) |
411e1bfb | 7049 | /* GD -> LE */ |
951fd09b | 7050 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
7051 | else |
7052 | /* GD -> IE */ | |
951fd09b AM |
7053 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
7054 | tls_clear = TLS_GD; | |
411e1bfb AM |
7055 | } |
7056 | else | |
7057 | { | |
951fd09b AM |
7058 | if (!is_local) |
7059 | continue; | |
7060 | ||
7061 | /* LD -> LE */ | |
7062 | tls_set = TLS_EXPLICIT; | |
7063 | tls_clear = TLS_LD; | |
411e1bfb AM |
7064 | } |
7065 | break; | |
7066 | ||
7067 | default: | |
7068 | expecting_tls_get_addr = 0; | |
7069 | continue; | |
7070 | } | |
7071 | ||
7072 | if ((tls_set & TLS_EXPLICIT) == 0) | |
7073 | { | |
7074 | struct got_entry *ent; | |
7075 | ||
7076 | /* Adjust got entry for this reloc. */ | |
7077 | if (h != NULL) | |
7078 | ent = h->got.glist; | |
7079 | else | |
7080 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
7081 | ||
7082 | for (; ent != NULL; ent = ent->next) | |
7083 | if (ent->addend == rel->r_addend | |
e717da7e | 7084 | && ent->owner == ibfd |
e7b938ca | 7085 | && ent->tls_type == tls_type) |
411e1bfb AM |
7086 | break; |
7087 | if (ent == NULL) | |
7088 | abort (); | |
7089 | ||
7090 | if (tls_set == 0) | |
7091 | { | |
7092 | /* We managed to get rid of a got entry. */ | |
7093 | if (ent->got.refcount > 0) | |
7094 | ent->got.refcount -= 1; | |
7095 | } | |
411e1bfb | 7096 | } |
8c1d1bb8 | 7097 | else |
411e1bfb | 7098 | { |
8c1d1bb8 AM |
7099 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
7100 | we'll lose one or two dyn relocs. */ | |
7101 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7102 | NULL, h, sym_sec)) | |
7103 | return FALSE; | |
7104 | ||
7105 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
7106 | { | |
7107 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7108 | NULL, h, sym_sec)) | |
7109 | return FALSE; | |
7110 | } | |
411e1bfb AM |
7111 | } |
7112 | ||
e7b938ca AM |
7113 | *tls_mask |= tls_set; |
7114 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
7115 | } |
7116 | ||
7117 | if (elf_section_data (sec)->relocs != relstart) | |
7118 | free (relstart); | |
7119 | } | |
7120 | ||
30038c59 AM |
7121 | if (toc_ref != NULL) |
7122 | free (toc_ref); | |
7123 | ||
411e1bfb AM |
7124 | if (locsyms != NULL |
7125 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
7126 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
7127 | { |
7128 | if (!info->keep_memory) | |
411e1bfb | 7129 | free (locsyms); |
6cdc0ccc | 7130 | else |
411e1bfb | 7131 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 7132 | } |
1e2f5b6e | 7133 | } |
b34976b6 | 7134 | return TRUE; |
1e2f5b6e | 7135 | } |
b34976b6 | 7136 | |
c5614fa4 AM |
7137 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7138 | the values of any global symbols in a toc section that has been | |
7139 | edited. Globals in toc sections should be a rarity, so this function | |
7140 | sets a flag if any are found in toc sections other than the one just | |
7141 | edited, so that futher hash table traversals can be avoided. */ | |
7142 | ||
7143 | struct adjust_toc_info | |
7144 | { | |
7145 | asection *toc; | |
7146 | unsigned long *skip; | |
7147 | bfd_boolean global_toc_syms; | |
7148 | }; | |
7149 | ||
7150 | static bfd_boolean | |
7151 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7152 | { | |
7153 | struct ppc_link_hash_entry *eh; | |
7154 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7155 | ||
7156 | if (h->root.type == bfd_link_hash_indirect) | |
7157 | return TRUE; | |
7158 | ||
7159 | if (h->root.type == bfd_link_hash_warning) | |
7160 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7161 | ||
7162 | if (h->root.type != bfd_link_hash_defined | |
7163 | && h->root.type != bfd_link_hash_defweak) | |
7164 | return TRUE; | |
7165 | ||
7166 | eh = (struct ppc_link_hash_entry *) h; | |
7167 | if (eh->adjust_done) | |
7168 | return TRUE; | |
7169 | ||
7170 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7171 | { | |
7172 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7173 | if (skip != (unsigned long) -1) | |
7174 | eh->elf.root.u.def.value -= skip; | |
7175 | else | |
7176 | { | |
7177 | (*_bfd_error_handler) | |
7178 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7179 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7180 | eh->elf.root.u.def.value = 0; | |
7181 | } | |
7182 | eh->adjust_done = 1; | |
7183 | } | |
7184 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7185 | toc_inf->global_toc_syms = TRUE; | |
7186 | ||
7187 | return TRUE; | |
7188 | } | |
7189 | ||
7190 | /* Examine all relocs referencing .toc sections in order to remove | |
7191 | unused .toc entries. */ | |
7192 | ||
7193 | bfd_boolean | |
7194 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7195 | { | |
7196 | bfd *ibfd; | |
7197 | struct adjust_toc_info toc_inf; | |
7198 | ||
7199 | toc_inf.global_toc_syms = TRUE; | |
7200 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7201 | { | |
7202 | asection *toc, *sec; | |
7203 | Elf_Internal_Shdr *symtab_hdr; | |
7204 | Elf_Internal_Sym *local_syms; | |
7205 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7206 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7207 | unsigned long *skip, *drop; |
7208 | unsigned char *used; | |
7209 | unsigned char *keep, last, some_unused; | |
7210 | ||
7211 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7212 | if (toc == NULL | |
92b7a70f | 7213 | || toc->size == 0 |
c5614fa4 AM |
7214 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7215 | || elf_discarded_section (toc)) | |
7216 | continue; | |
7217 | ||
7218 | local_syms = NULL; | |
7219 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7220 | sym_hashes = elf_sym_hashes (ibfd); | |
7221 | ||
7222 | /* Look at sections dropped from the final link. */ | |
7223 | skip = NULL; | |
7224 | relstart = NULL; | |
7225 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7226 | { | |
7227 | if (sec->reloc_count == 0 | |
7228 | || !elf_discarded_section (sec) | |
7229 | || get_opd_info (sec) | |
7230 | || (sec->flags & SEC_ALLOC) == 0 | |
7231 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7232 | continue; | |
7233 | ||
7234 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7235 | if (relstart == NULL) | |
7236 | goto error_ret; | |
7237 | ||
7238 | /* Run through the relocs to see which toc entries might be | |
7239 | unused. */ | |
7240 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7241 | { | |
7242 | enum elf_ppc64_reloc_type r_type; | |
7243 | unsigned long r_symndx; | |
7244 | asection *sym_sec; | |
7245 | struct elf_link_hash_entry *h; | |
7246 | Elf_Internal_Sym *sym; | |
7247 | bfd_vma val; | |
7248 | ||
7249 | r_type = ELF64_R_TYPE (rel->r_info); | |
7250 | switch (r_type) | |
7251 | { | |
7252 | default: | |
7253 | continue; | |
7254 | ||
7255 | case R_PPC64_TOC16: | |
7256 | case R_PPC64_TOC16_LO: | |
7257 | case R_PPC64_TOC16_HI: | |
7258 | case R_PPC64_TOC16_HA: | |
7259 | case R_PPC64_TOC16_DS: | |
7260 | case R_PPC64_TOC16_LO_DS: | |
7261 | break; | |
7262 | } | |
7263 | ||
7264 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7265 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7266 | r_symndx, ibfd)) | |
7267 | goto error_ret; | |
7268 | ||
7269 | if (sym_sec != toc) | |
7270 | continue; | |
7271 | ||
7272 | if (h != NULL) | |
7273 | val = h->root.u.def.value; | |
7274 | else | |
7275 | val = sym->st_value; | |
7276 | val += rel->r_addend; | |
7277 | ||
7278 | if (val >= toc->size) | |
7279 | continue; | |
7280 | ||
7281 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7282 | If not, don't mark as unused. */ | |
7283 | if (val & 7) | |
7284 | continue; | |
7285 | ||
7286 | if (skip == NULL) | |
7287 | { | |
7288 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7289 | if (skip == NULL) | |
7290 | goto error_ret; | |
7291 | } | |
7292 | ||
7293 | skip[val >> 3] = 1; | |
7294 | } | |
7295 | ||
7296 | if (elf_section_data (sec)->relocs != relstart) | |
7297 | free (relstart); | |
7298 | } | |
7299 | ||
7300 | if (skip == NULL) | |
7301 | continue; | |
7302 | ||
7303 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7304 | if (used == NULL) | |
7305 | { | |
7306 | error_ret: | |
7307 | if (local_syms != NULL | |
7308 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7309 | free (local_syms); | |
7310 | if (sec != NULL | |
7311 | && relstart != NULL | |
7312 | && elf_section_data (sec)->relocs != relstart) | |
7313 | free (relstart); | |
7314 | if (skip != NULL) | |
7315 | free (skip); | |
7316 | return FALSE; | |
7317 | } | |
7318 | ||
30038c59 AM |
7319 | /* Now check all kept sections that might reference the toc. |
7320 | Check the toc itself last. */ | |
7321 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7322 | : ibfd->sections); | |
c5614fa4 | 7323 | sec != NULL; |
c5614fa4 | 7324 | sec = (sec == toc ? NULL |
c5614fa4 | 7325 | : sec->next == NULL ? toc |
30038c59 | 7326 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7327 | : sec->next)) |
7328 | { | |
7329 | int repeat; | |
7330 | ||
7331 | if (sec->reloc_count == 0 | |
7332 | || elf_discarded_section (sec) | |
7333 | || get_opd_info (sec) | |
7334 | || (sec->flags & SEC_ALLOC) == 0 | |
7335 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7336 | continue; | |
7337 | ||
7338 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7339 | if (relstart == NULL) | |
7340 | goto error_ret; | |
7341 | ||
7342 | /* Mark toc entries referenced as used. */ | |
7343 | repeat = 0; | |
7344 | do | |
7345 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7346 | { | |
7347 | enum elf_ppc64_reloc_type r_type; | |
7348 | unsigned long r_symndx; | |
7349 | asection *sym_sec; | |
7350 | struct elf_link_hash_entry *h; | |
7351 | Elf_Internal_Sym *sym; | |
7352 | bfd_vma val; | |
7353 | ||
7354 | r_type = ELF64_R_TYPE (rel->r_info); | |
7355 | switch (r_type) | |
7356 | { | |
7357 | case R_PPC64_TOC16: | |
7358 | case R_PPC64_TOC16_LO: | |
7359 | case R_PPC64_TOC16_HI: | |
7360 | case R_PPC64_TOC16_HA: | |
7361 | case R_PPC64_TOC16_DS: | |
7362 | case R_PPC64_TOC16_LO_DS: | |
7363 | /* In case we're taking addresses of toc entries. */ | |
7364 | case R_PPC64_ADDR64: | |
7365 | break; | |
7366 | ||
7367 | default: | |
7368 | continue; | |
7369 | } | |
7370 | ||
7371 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7372 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7373 | r_symndx, ibfd)) | |
7374 | { | |
7375 | free (used); | |
7376 | goto error_ret; | |
7377 | } | |
7378 | ||
7379 | if (sym_sec != toc) | |
7380 | continue; | |
7381 | ||
7382 | if (h != NULL) | |
7383 | val = h->root.u.def.value; | |
7384 | else | |
7385 | val = sym->st_value; | |
7386 | val += rel->r_addend; | |
7387 | ||
7388 | if (val >= toc->size) | |
7389 | continue; | |
7390 | ||
7391 | /* For the toc section, we only mark as used if | |
7392 | this entry itself isn't unused. */ | |
7393 | if (sec == toc | |
7394 | && !used[val >> 3] | |
7395 | && (used[rel->r_offset >> 3] | |
7396 | || !skip[rel->r_offset >> 3])) | |
7397 | /* Do all the relocs again, to catch reference | |
7398 | chains. */ | |
7399 | repeat = 1; | |
7400 | ||
7401 | used[val >> 3] = 1; | |
7402 | } | |
7403 | while (repeat); | |
7404 | } | |
7405 | ||
7406 | /* Merge the used and skip arrays. Assume that TOC | |
7407 | doublewords not appearing as either used or unused belong | |
7408 | to to an entry more than one doubleword in size. */ | |
7409 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7410 | drop < skip + (toc->size + 7) / 8; | |
7411 | ++drop, ++keep) | |
7412 | { | |
7413 | if (*keep) | |
7414 | { | |
7415 | *drop = 0; | |
7416 | last = 0; | |
7417 | } | |
7418 | else if (*drop) | |
7419 | { | |
7420 | some_unused = 1; | |
7421 | last = 1; | |
7422 | } | |
7423 | else | |
7424 | *drop = last; | |
7425 | } | |
7426 | ||
7427 | free (used); | |
7428 | ||
7429 | if (some_unused) | |
7430 | { | |
7431 | bfd_byte *contents, *src; | |
7432 | unsigned long off; | |
7433 | ||
7434 | /* Shuffle the toc contents, and at the same time convert the | |
7435 | skip array from booleans into offsets. */ | |
7436 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7437 | goto error_ret; | |
7438 | ||
7439 | elf_section_data (toc)->this_hdr.contents = contents; | |
7440 | ||
7441 | for (src = contents, off = 0, drop = skip; | |
7442 | src < contents + toc->size; | |
7443 | src += 8, ++drop) | |
7444 | { | |
7445 | if (*drop) | |
7446 | { | |
7447 | *drop = (unsigned long) -1; | |
7448 | off += 8; | |
7449 | } | |
7450 | else if (off != 0) | |
7451 | { | |
7452 | *drop = off; | |
7453 | memcpy (src - off, src, 8); | |
7454 | } | |
7455 | } | |
7456 | toc->rawsize = toc->size; | |
7457 | toc->size = src - contents - off; | |
7458 | ||
92b7a70f AM |
7459 | if (toc->reloc_count != 0) |
7460 | { | |
7461 | Elf_Internal_Rela *wrel; | |
7462 | bfd_size_type sz; | |
c5614fa4 | 7463 | |
92b7a70f AM |
7464 | /* Read toc relocs. */ |
7465 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7466 | TRUE); | |
7467 | if (relstart == NULL) | |
7468 | goto error_ret; | |
7469 | ||
7470 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7471 | wrel = relstart; | |
7472 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7473 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7474 | { | |
7475 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7476 | wrel->r_info = rel->r_info; | |
7477 | wrel->r_addend = rel->r_addend; | |
7478 | ++wrel; | |
7479 | } | |
8c1d1bb8 AM |
7480 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7481 | &local_syms, NULL, NULL)) | |
7482 | goto error_ret; | |
35090471 | 7483 | |
92b7a70f AM |
7484 | toc->reloc_count = wrel - relstart; |
7485 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7486 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7487 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7488 | } | |
c5614fa4 AM |
7489 | |
7490 | /* Adjust addends for relocs against the toc section sym. */ | |
7491 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7492 | { | |
7493 | if (sec->reloc_count == 0 | |
7494 | || elf_discarded_section (sec)) | |
7495 | continue; | |
7496 | ||
7497 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7498 | TRUE); | |
7499 | if (relstart == NULL) | |
7500 | goto error_ret; | |
7501 | ||
7502 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7503 | { | |
7504 | enum elf_ppc64_reloc_type r_type; | |
7505 | unsigned long r_symndx; | |
7506 | asection *sym_sec; | |
7507 | struct elf_link_hash_entry *h; | |
7508 | Elf_Internal_Sym *sym; | |
7509 | ||
7510 | r_type = ELF64_R_TYPE (rel->r_info); | |
7511 | switch (r_type) | |
7512 | { | |
7513 | default: | |
7514 | continue; | |
7515 | ||
7516 | case R_PPC64_TOC16: | |
7517 | case R_PPC64_TOC16_LO: | |
7518 | case R_PPC64_TOC16_HI: | |
7519 | case R_PPC64_TOC16_HA: | |
7520 | case R_PPC64_TOC16_DS: | |
7521 | case R_PPC64_TOC16_LO_DS: | |
7522 | case R_PPC64_ADDR64: | |
7523 | break; | |
7524 | } | |
7525 | ||
7526 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7527 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7528 | r_symndx, ibfd)) | |
7529 | goto error_ret; | |
7530 | ||
7531 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7532 | continue; | |
7533 | ||
7534 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7535 | } | |
7536 | } | |
7537 | ||
7538 | /* We shouldn't have local or global symbols defined in the TOC, | |
7539 | but handle them anyway. */ | |
7540 | if (local_syms != NULL) | |
7541 | { | |
7542 | Elf_Internal_Sym *sym; | |
7543 | ||
7544 | for (sym = local_syms; | |
7545 | sym < local_syms + symtab_hdr->sh_info; | |
7546 | ++sym) | |
7547 | if (sym->st_shndx != SHN_UNDEF | |
7548 | && (sym->st_shndx < SHN_LORESERVE | |
7549 | || sym->st_shndx > SHN_HIRESERVE) | |
7550 | && sym->st_value != 0 | |
7551 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7552 | { | |
7553 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7554 | sym->st_value -= skip[sym->st_value >> 3]; | |
7555 | else | |
7556 | { | |
7557 | (*_bfd_error_handler) | |
7558 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7559 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7560 | NULL)); | |
c5614fa4 AM |
7561 | sym->st_value = 0; |
7562 | sym->st_shndx = SHN_ABS; | |
7563 | } | |
7564 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7565 | } | |
7566 | } | |
7567 | ||
7568 | /* Finally, adjust any global syms defined in the toc. */ | |
7569 | if (toc_inf.global_toc_syms) | |
7570 | { | |
7571 | toc_inf.toc = toc; | |
7572 | toc_inf.skip = skip; | |
7573 | toc_inf.global_toc_syms = FALSE; | |
7574 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7575 | &toc_inf); | |
7576 | } | |
7577 | } | |
7578 | ||
7579 | if (local_syms != NULL | |
7580 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7581 | { | |
7582 | if (!info->keep_memory) | |
7583 | free (local_syms); | |
7584 | else | |
7585 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7586 | } | |
7587 | free (skip); | |
7588 | } | |
7589 | ||
7590 | return TRUE; | |
7591 | } | |
7592 | ||
65f38f15 AM |
7593 | /* Allocate space in .plt, .got and associated reloc sections for |
7594 | dynamic relocs. */ | |
5bd4f169 | 7595 | |
b34976b6 | 7596 | static bfd_boolean |
4ce794b7 | 7597 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7598 | { |
65f38f15 AM |
7599 | struct bfd_link_info *info; |
7600 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7601 | asection *s; |
65f38f15 AM |
7602 | struct ppc_link_hash_entry *eh; |
7603 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7604 | struct got_entry *gent; |
5bd4f169 | 7605 | |
e92d460e | 7606 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7607 | return TRUE; |
5bd4f169 | 7608 | |
e92d460e AM |
7609 | if (h->root.type == bfd_link_hash_warning) |
7610 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7611 | ||
65f38f15 AM |
7612 | info = (struct bfd_link_info *) inf; |
7613 | htab = ppc_hash_table (info); | |
5bd4f169 | 7614 | |
65f38f15 | 7615 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7616 | && h->dynindx != -1 |
9c7a29a3 | 7617 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7618 | { |
411e1bfb AM |
7619 | struct plt_entry *pent; |
7620 | bfd_boolean doneone = FALSE; | |
7621 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7622 | if (pent->plt.refcount > 0) | |
7623 | { | |
411e1bfb AM |
7624 | /* If this is the first .plt entry, make room for the special |
7625 | first entry. */ | |
4ce794b7 | 7626 | s = htab->plt; |
eea6121a AM |
7627 | if (s->size == 0) |
7628 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7629 | |
eea6121a | 7630 | pent->plt.offset = s->size; |
411e1bfb AM |
7631 | |
7632 | /* Make room for this entry. */ | |
eea6121a | 7633 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7634 | |
7635 | /* Make room for the .glink code. */ | |
4ce794b7 | 7636 | s = htab->glink; |
eea6121a AM |
7637 | if (s->size == 0) |
7638 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7639 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7640 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7641 | s->size += 4; | |
7642 | s->size += 2*4; | |
411e1bfb AM |
7643 | |
7644 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7645 | s = htab->relplt; |
eea6121a | 7646 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7647 | doneone = TRUE; |
7648 | } | |
7649 | else | |
7650 | pent->plt.offset = (bfd_vma) -1; | |
7651 | if (!doneone) | |
65f38f15 | 7652 | { |
411e1bfb | 7653 | h->plt.plist = NULL; |
f5385ebf | 7654 | h->needs_plt = 0; |
65f38f15 AM |
7655 | } |
7656 | } | |
7657 | else | |
7658 | { | |
411e1bfb | 7659 | h->plt.plist = NULL; |
f5385ebf | 7660 | h->needs_plt = 0; |
65f38f15 AM |
7661 | } |
7662 | ||
951fd09b AM |
7663 | eh = (struct ppc_link_hash_entry *) h; |
7664 | /* Run through the TLS GD got entries first if we're changing them | |
7665 | to TPREL. */ | |
e7b938ca | 7666 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7667 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7668 | if (gent->got.refcount > 0 | |
7669 | && (gent->tls_type & TLS_GD) != 0) | |
7670 | { | |
7671 | /* This was a GD entry that has been converted to TPREL. If | |
7672 | there happens to be a TPREL entry we can use that one. */ | |
7673 | struct got_entry *ent; | |
7674 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7675 | if (ent->got.refcount > 0 | |
7676 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7677 | && ent->addend == gent->addend |
7678 | && ent->owner == gent->owner) | |
951fd09b AM |
7679 | { |
7680 | gent->got.refcount = 0; | |
7681 | break; | |
7682 | } | |
7683 | ||
7684 | /* If not, then we'll be using our own TPREL entry. */ | |
7685 | if (gent->got.refcount != 0) | |
7686 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7687 | } | |
7688 | ||
411e1bfb AM |
7689 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7690 | if (gent->got.refcount > 0) | |
7691 | { | |
951fd09b AM |
7692 | bfd_boolean dyn; |
7693 | ||
411e1bfb | 7694 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7695 | Undefined weak syms won't yet be marked as dynamic, |
7696 | nor will all TLS symbols. */ | |
411e1bfb | 7697 | if (h->dynindx == -1 |
f5385ebf | 7698 | && !h->forced_local) |
411e1bfb | 7699 | { |
c152c796 | 7700 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7701 | return FALSE; |
7702 | } | |
65f38f15 | 7703 | |
d881513a | 7704 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7705 | && !h->def_dynamic) |
411e1bfb | 7706 | { |
e717da7e | 7707 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7708 | continue; |
411e1bfb | 7709 | } |
951fd09b | 7710 | |
e717da7e | 7711 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7712 | gent->got.offset = s->size; |
7713 | s->size | |
d881513a | 7714 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7715 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7716 | if ((info->shared |
7717 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7718 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7719 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7720 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7721 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7722 | ? 2 * sizeof (Elf64_External_Rela) |
7723 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7724 | } |
7725 | else | |
7726 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7727 | |
65f38f15 | 7728 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7729 | return TRUE; |
65f38f15 AM |
7730 | |
7731 | /* In the shared -Bsymbolic case, discard space allocated for | |
7732 | dynamic pc-relative relocs against symbols which turn out to be | |
7733 | defined in regular objects. For the normal shared case, discard | |
7734 | space for relocs that have become local due to symbol visibility | |
7735 | changes. */ | |
7736 | ||
7737 | if (info->shared) | |
7738 | { | |
9c7a29a3 AM |
7739 | /* Relocs that use pc_count are those that appear on a call insn, |
7740 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7741 | generated via assembly. We want calls to protected symbols to | |
7742 | resolve directly to the function rather than going via the plt. | |
7743 | If people want function pointer comparisons to work as expected | |
7744 | then they should avoid writing weird assembly. */ | |
09695f56 | 7745 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7746 | { |
7747 | struct ppc_dyn_relocs **pp; | |
7748 | ||
7749 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7750 | { |
65f38f15 AM |
7751 | p->count -= p->pc_count; |
7752 | p->pc_count = 0; | |
7753 | if (p->count == 0) | |
7754 | *pp = p->next; | |
7755 | else | |
7756 | pp = &p->next; | |
5bd4f169 | 7757 | } |
65f38f15 | 7758 | } |
4e795f50 AM |
7759 | |
7760 | /* Also discard relocs on undefined weak syms with non-default | |
7761 | visibility. */ | |
cab87ef9 AM |
7762 | if (eh->dyn_relocs != NULL |
7763 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7764 | { |
7765 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7766 | eh->dyn_relocs = NULL; | |
7767 | ||
7768 | /* Make sure this symbol is output as a dynamic symbol. | |
7769 | Undefined weak syms won't yet be marked as dynamic. */ | |
7770 | else if (h->dynindx == -1 | |
7771 | && !h->forced_local) | |
7772 | { | |
7773 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7774 | return FALSE; | |
7775 | } | |
7776 | } | |
65f38f15 | 7777 | } |
f4656909 | 7778 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7779 | { |
7780 | /* For the non-shared case, discard space for relocs against | |
7781 | symbols which turn out to need copy relocs or are not | |
7782 | dynamic. */ | |
7783 | ||
f5385ebf AM |
7784 | if (!h->non_got_ref |
7785 | && h->def_dynamic | |
7786 | && !h->def_regular) | |
65f38f15 AM |
7787 | { |
7788 | /* Make sure this symbol is output as a dynamic symbol. | |
7789 | Undefined weak syms won't yet be marked as dynamic. */ | |
7790 | if (h->dynindx == -1 | |
f5385ebf | 7791 | && !h->forced_local) |
65f38f15 | 7792 | { |
c152c796 | 7793 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7794 | return FALSE; |
65f38f15 AM |
7795 | } |
7796 | ||
7797 | /* If that succeeded, we know we'll be keeping all the | |
7798 | relocs. */ | |
7799 | if (h->dynindx != -1) | |
7800 | goto keep; | |
7801 | } | |
7802 | ||
7803 | eh->dyn_relocs = NULL; | |
7804 | ||
ec338859 | 7805 | keep: ; |
65f38f15 AM |
7806 | } |
7807 | ||
7808 | /* Finally, allocate space. */ | |
7809 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7810 | { | |
7811 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7812 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7813 | } |
7814 | ||
b34976b6 | 7815 | return TRUE; |
65f38f15 AM |
7816 | } |
7817 | ||
7818 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7819 | ||
b34976b6 | 7820 | static bfd_boolean |
4ce794b7 | 7821 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7822 | { |
7823 | struct ppc_link_hash_entry *eh; | |
7824 | struct ppc_dyn_relocs *p; | |
7825 | ||
e92d460e AM |
7826 | if (h->root.type == bfd_link_hash_warning) |
7827 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7828 | ||
65f38f15 AM |
7829 | eh = (struct ppc_link_hash_entry *) h; |
7830 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7831 | { | |
7832 | asection *s = p->sec->output_section; | |
7833 | ||
7834 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7835 | { | |
4ce794b7 | 7836 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7837 | |
7838 | info->flags |= DF_TEXTREL; | |
7839 | ||
7840 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7841 | return FALSE; |
65f38f15 AM |
7842 | } |
7843 | } | |
b34976b6 | 7844 | return TRUE; |
65f38f15 AM |
7845 | } |
7846 | ||
7847 | /* Set the sizes of the dynamic sections. */ | |
7848 | ||
b34976b6 | 7849 | static bfd_boolean |
4ce794b7 AM |
7850 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7851 | struct bfd_link_info *info) | |
65f38f15 AM |
7852 | { |
7853 | struct ppc_link_hash_table *htab; | |
7854 | bfd *dynobj; | |
7855 | asection *s; | |
b34976b6 | 7856 | bfd_boolean relocs; |
65f38f15 AM |
7857 | bfd *ibfd; |
7858 | ||
7859 | htab = ppc_hash_table (info); | |
7860 | dynobj = htab->elf.dynobj; | |
7861 | if (dynobj == NULL) | |
7862 | abort (); | |
7863 | ||
7864 | if (htab->elf.dynamic_sections_created) | |
7865 | { | |
7866 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7867 | if (info->executable) |
65f38f15 AM |
7868 | { |
7869 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7870 | if (s == NULL) | |
7871 | abort (); | |
eea6121a | 7872 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7873 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7874 | } | |
7875 | } | |
7876 | ||
7877 | /* Set up .got offsets for local syms, and space for local dynamic | |
7878 | relocs. */ | |
7879 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7880 | { | |
411e1bfb AM |
7881 | struct got_entry **lgot_ents; |
7882 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7883 | char *lgot_masks; |
65f38f15 AM |
7884 | bfd_size_type locsymcount; |
7885 | Elf_Internal_Shdr *symtab_hdr; | |
7886 | asection *srel; | |
7887 | ||
ee75fd95 | 7888 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7889 | continue; |
7890 | ||
e717da7e AM |
7891 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7892 | { | |
7893 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7894 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7895 | s->size += 16; | |
e717da7e AM |
7896 | if (info->shared) |
7897 | { | |
7898 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7899 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7900 | } |
7901 | } | |
7902 | else | |
7903 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7904 | ||
65f38f15 AM |
7905 | for (s = ibfd->sections; s != NULL; s = s->next) |
7906 | { | |
ec338859 | 7907 | struct ppc_dyn_relocs *p; |
65f38f15 | 7908 | |
6edfbbad | 7909 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7910 | { |
ec338859 AM |
7911 | if (!bfd_is_abs_section (p->sec) |
7912 | && bfd_is_abs_section (p->sec->output_section)) | |
7913 | { | |
7914 | /* Input section has been discarded, either because | |
7915 | it is a copy of a linkonce section or due to | |
7916 | linker script /DISCARD/, so we'll be discarding | |
7917 | the relocs too. */ | |
7918 | } | |
248866a8 | 7919 | else if (p->count != 0) |
ec338859 AM |
7920 | { |
7921 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7922 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7923 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7924 | info->flags |= DF_TEXTREL; | |
ec338859 | 7925 | } |
65f38f15 AM |
7926 | } |
7927 | } | |
7928 | ||
411e1bfb AM |
7929 | lgot_ents = elf_local_got_ents (ibfd); |
7930 | if (!lgot_ents) | |
65f38f15 AM |
7931 | continue; |
7932 | ||
7933 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7934 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7935 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7936 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7937 | s = ppc64_elf_tdata (ibfd)->got; |
7938 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7939 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7940 | { |
411e1bfb AM |
7941 | struct got_entry *ent; |
7942 | ||
7943 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7944 | if (ent->got.refcount > 0) | |
7945 | { | |
e7b938ca | 7946 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7947 | { |
e717da7e | 7948 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7949 | { |
eea6121a AM |
7950 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7951 | s->size += 16; | |
411e1bfb | 7952 | if (info->shared) |
eea6121a | 7953 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7954 | } |
e717da7e | 7955 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7956 | } |
7957 | else | |
7958 | { | |
eea6121a | 7959 | ent->got.offset = s->size; |
e7b938ca | 7960 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7961 | { |
eea6121a | 7962 | s->size += 16; |
411e1bfb | 7963 | if (info->shared) |
eea6121a | 7964 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7965 | } |
7966 | else | |
7967 | { | |
eea6121a | 7968 | s->size += 8; |
411e1bfb | 7969 | if (info->shared) |
eea6121a | 7970 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7971 | } |
7972 | } | |
7973 | } | |
7974 | else | |
7975 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7976 | } |
7977 | } | |
7978 | ||
7979 | /* Allocate global sym .plt and .got entries, and space for global | |
7980 | sym dynamic relocs. */ | |
4ce794b7 | 7981 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7982 | |
7983 | /* We now have determined the sizes of the various dynamic sections. | |
7984 | Allocate memory for them. */ | |
b34976b6 | 7985 | relocs = FALSE; |
65f38f15 AM |
7986 | for (s = dynobj->sections; s != NULL; s = s->next) |
7987 | { | |
7988 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7989 | continue; | |
7990 | ||
4ce794b7 | 7991 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7992 | /* These haven't been allocated yet; don't strip. */ |
7993 | continue; | |
e717da7e AM |
7994 | else if (s == htab->got |
7995 | || s == htab->plt | |
c456f082 AM |
7996 | || s == htab->glink |
7997 | || s == htab->dynbss) | |
65f38f15 AM |
7998 | { |
7999 | /* Strip this section if we don't need it; see the | |
8000 | comment below. */ | |
5bd4f169 | 8001 | } |
0112cd26 | 8002 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8003 | { |
c456f082 | 8004 | if (s->size != 0) |
5bd4f169 | 8005 | { |
4ce794b7 | 8006 | if (s != htab->relplt) |
b34976b6 | 8007 | relocs = TRUE; |
5bd4f169 AM |
8008 | |
8009 | /* We use the reloc_count field as a counter if we need | |
8010 | to copy relocs into the output file. */ | |
8011 | s->reloc_count = 0; | |
8012 | } | |
8013 | } | |
65f38f15 | 8014 | else |
5bd4f169 AM |
8015 | { |
8016 | /* It's not one of our sections, so don't allocate space. */ | |
8017 | continue; | |
8018 | } | |
8019 | ||
eea6121a | 8020 | if (s->size == 0) |
5bd4f169 | 8021 | { |
c456f082 AM |
8022 | /* If we don't need this section, strip it from the |
8023 | output file. This is mostly to handle .rela.bss and | |
8024 | .rela.plt. We must create both sections in | |
8025 | create_dynamic_sections, because they must be created | |
8026 | before the linker maps input sections to output | |
8027 | sections. The linker does that before | |
8028 | adjust_dynamic_symbol is called, and it is that | |
8029 | function which decides whether anything needs to go | |
8030 | into these sections. */ | |
8423293d | 8031 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8032 | continue; |
8033 | } | |
8034 | ||
c456f082 | 8035 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8036 | continue; |
8037 | ||
65f38f15 AM |
8038 | /* Allocate memory for the section contents. We use bfd_zalloc |
8039 | here in case unused entries are not reclaimed before the | |
8040 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8041 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8042 | sections instead of garbage. | |
8043 | We also rely on the section contents being zero when writing | |
8044 | the GOT. */ | |
eea6121a | 8045 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8046 | if (s->contents == NULL) |
b34976b6 | 8047 | return FALSE; |
5bd4f169 AM |
8048 | } |
8049 | ||
e717da7e AM |
8050 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8051 | { | |
ee75fd95 | 8052 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
8053 | continue; |
8054 | ||
e717da7e AM |
8055 | s = ppc64_elf_tdata (ibfd)->got; |
8056 | if (s != NULL && s != htab->got) | |
8057 | { | |
eea6121a | 8058 | if (s->size == 0) |
8423293d | 8059 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8060 | else |
8061 | { | |
eea6121a | 8062 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8063 | if (s->contents == NULL) |
8064 | return FALSE; | |
8065 | } | |
8066 | } | |
8067 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8068 | if (s != NULL) | |
8069 | { | |
eea6121a | 8070 | if (s->size == 0) |
8423293d | 8071 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8072 | else |
8073 | { | |
eea6121a | 8074 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8075 | if (s->contents == NULL) |
8076 | return FALSE; | |
8077 | relocs = TRUE; | |
8078 | s->reloc_count = 0; | |
8079 | } | |
8080 | } | |
8081 | } | |
8082 | ||
e86ce104 | 8083 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8084 | { |
8085 | /* Add some entries to the .dynamic section. We fill in the | |
8086 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8087 | must add the entries now so that we get the correct size for | |
8088 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8089 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8090 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8091 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8092 | |
36af4a4e | 8093 | if (info->executable) |
5bd4f169 | 8094 | { |
dc810e39 | 8095 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8096 | return FALSE; |
5bd4f169 AM |
8097 | } |
8098 | ||
eea6121a | 8099 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8100 | { |
dc810e39 AM |
8101 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8102 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8103 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8104 | || !add_dynamic_entry (DT_JMPREL, 0) |
8105 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8106 | return FALSE; |
5bd4f169 AM |
8107 | } |
8108 | ||
19397422 AM |
8109 | if (NO_OPD_RELOCS) |
8110 | { | |
8111 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8112 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8113 | return FALSE; |
19397422 AM |
8114 | } |
8115 | ||
5bd4f169 AM |
8116 | if (relocs) |
8117 | { | |
dc810e39 AM |
8118 | if (!add_dynamic_entry (DT_RELA, 0) |
8119 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8120 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8121 | return FALSE; |
5bd4f169 | 8122 | |
65f38f15 AM |
8123 | /* If any dynamic relocs apply to a read-only section, |
8124 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8125 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8126 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8127 | |
65f38f15 | 8128 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8129 | { |
65f38f15 | 8130 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8131 | return FALSE; |
5bd4f169 | 8132 | } |
5bd4f169 | 8133 | } |
5bd4f169 | 8134 | } |
65f38f15 | 8135 | #undef add_dynamic_entry |
5bd4f169 | 8136 | |
b34976b6 | 8137 | return TRUE; |
5bd4f169 AM |
8138 | } |
8139 | ||
721956f4 | 8140 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8141 | |
4ce794b7 AM |
8142 | static inline enum ppc_stub_type |
8143 | ppc_type_of_stub (asection *input_sec, | |
8144 | const Elf_Internal_Rela *rel, | |
8145 | struct ppc_link_hash_entry **hash, | |
8146 | bfd_vma destination) | |
5bd4f169 | 8147 | { |
721956f4 AM |
8148 | struct ppc_link_hash_entry *h = *hash; |
8149 | bfd_vma location; | |
8150 | bfd_vma branch_offset; | |
8151 | bfd_vma max_branch_offset; | |
4ce794b7 | 8152 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8153 | |
721956f4 AM |
8154 | if (h != NULL) |
8155 | { | |
7fe2b9a6 AM |
8156 | struct ppc_link_hash_entry *fdh = h; |
8157 | if (fdh->oh != NULL | |
8158 | && fdh->oh->is_func_descriptor) | |
8159 | fdh = fdh->oh; | |
8387904d | 8160 | |
7fe2b9a6 | 8161 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8162 | { |
411e1bfb | 8163 | struct plt_entry *ent; |
8387904d | 8164 | |
7fe2b9a6 | 8165 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8166 | if (ent->addend == rel->r_addend |
8167 | && ent->plt.offset != (bfd_vma) -1) | |
8168 | { | |
7fe2b9a6 | 8169 | *hash = fdh; |
411e1bfb AM |
8170 | return ppc_stub_plt_call; |
8171 | } | |
5bd4f169 AM |
8172 | } |
8173 | ||
7fe2b9a6 AM |
8174 | /* Here, we know we don't have a plt entry. If we don't have a |
8175 | either a defined function descriptor or a defined entry symbol | |
8176 | in a regular object file, then it is pointless trying to make | |
8177 | any other type of stub. */ | |
8178 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8179 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8180 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8181 | && !((h->elf.root.type == bfd_link_hash_defined | |
8182 | || h->elf.root.type == bfd_link_hash_defweak) | |
8183 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8184 | return ppc_stub_none; |
5d1634d7 | 8185 | } |
5d1634d7 | 8186 | |
721956f4 AM |
8187 | /* Determine where the call point is. */ |
8188 | location = (input_sec->output_offset | |
8189 | + input_sec->output_section->vma | |
8190 | + rel->r_offset); | |
5d1634d7 | 8191 | |
721956f4 AM |
8192 | branch_offset = destination - location; |
8193 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8194 | |
721956f4 AM |
8195 | /* Determine if a long branch stub is needed. */ |
8196 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8197 | if (r_type != R_PPC64_REL24) |
721956f4 | 8198 | max_branch_offset = 1 << 15; |
5d1634d7 | 8199 | |
721956f4 AM |
8200 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8201 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8202 | is needed later. */ | |
8203 | return ppc_stub_long_branch; | |
5d1634d7 | 8204 | |
721956f4 | 8205 | return ppc_stub_none; |
5d1634d7 AM |
8206 | } |
8207 | ||
8208 | /* Build a .plt call stub. */ | |
8209 | ||
4ce794b7 AM |
8210 | static inline bfd_byte * |
8211 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8212 | { |
8213 | #define PPC_LO(v) ((v) & 0xffff) | |
8214 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8215 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8216 | ||
5d1634d7 | 8217 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 8218 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
8219 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
8220 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8221 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8222 | offset += 8; |
8223 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
8224 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8225 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8226 | offset += 8; |
8227 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8228 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8229 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8230 | return p; | |
8231 | } | |
8232 | ||
b34976b6 | 8233 | static bfd_boolean |
4ce794b7 | 8234 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8235 | { |
721956f4 AM |
8236 | struct ppc_stub_hash_entry *stub_entry; |
8237 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8238 | struct bfd_link_info *info; |
8239 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8240 | bfd_byte *loc; |
8241 | bfd_byte *p; | |
8242 | unsigned int indx; | |
411e1bfb | 8243 | struct plt_entry *ent; |
ee75fd95 | 8244 | bfd_vma dest, off; |
721956f4 | 8245 | int size; |
5d1634d7 | 8246 | |
721956f4 AM |
8247 | /* Massage our args to the form they really have. */ |
8248 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8249 | info = in_arg; |
5d1634d7 | 8250 | |
5d1634d7 AM |
8251 | htab = ppc_hash_table (info); |
8252 | ||
721956f4 | 8253 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8254 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8255 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8256 | |
4ce794b7 | 8257 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8258 | switch (stub_entry->stub_type) |
5d1634d7 | 8259 | { |
721956f4 | 8260 | case ppc_stub_long_branch: |
ad8e1ba5 | 8261 | case ppc_stub_long_branch_r2off: |
721956f4 | 8262 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8263 | off = dest = (stub_entry->target_value |
8264 | + stub_entry->target_section->output_offset | |
8265 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8266 | |
721956f4 AM |
8267 | /* And this is where we are coming from. */ |
8268 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8269 | + stub_entry->stub_sec->output_offset |
8270 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8271 | |
ad8e1ba5 AM |
8272 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
8273 | size = 4; | |
8274 | else | |
8275 | { | |
8276 | bfd_vma r2off; | |
8277 | ||
8278 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8279 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8280 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8281 | loc += 4; |
97b639ba | 8282 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8283 | loc += 4; |
97b639ba | 8284 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8285 | loc += 4; |
8286 | off -= 12; | |
8287 | size = 16; | |
8288 | } | |
97b639ba | 8289 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8290 | |
5c3dead3 AM |
8291 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8292 | { | |
8293 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8294 | stub_entry->root.string); | |
8295 | htab->stub_error = TRUE; | |
8296 | return FALSE; | |
8297 | } | |
ee75fd95 AM |
8298 | |
8299 | if (info->emitrelocations) | |
8300 | { | |
8301 | Elf_Internal_Rela *relocs, *r; | |
8302 | struct bfd_elf_section_data *elfsec_data; | |
8303 | ||
8304 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8305 | relocs = elfsec_data->relocs; | |
8306 | if (relocs == NULL) | |
8307 | { | |
8308 | bfd_size_type relsize; | |
8309 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8310 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8311 | if (relocs == NULL) | |
8312 | return FALSE; | |
8313 | elfsec_data->relocs = relocs; | |
8314 | elfsec_data->rel_hdr.sh_size = relsize; | |
8315 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8316 | stub_entry->stub_sec->reloc_count = 0; | |
8317 | } | |
8318 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8319 | stub_entry->stub_sec->reloc_count += 1; | |
8320 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8321 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8322 | r->r_addend = dest; | |
8323 | if (stub_entry->h != NULL) | |
8324 | { | |
8325 | struct elf_link_hash_entry **hashes; | |
8326 | unsigned long symndx; | |
8327 | struct ppc_link_hash_entry *h; | |
8328 | ||
8329 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8330 | if (hashes == NULL) | |
8331 | { | |
8332 | bfd_size_type hsize; | |
8333 | ||
8334 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8335 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8336 | if (hashes == NULL) | |
8337 | return FALSE; | |
8338 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8339 | htab->stub_globals = 1; | |
8340 | } | |
8341 | symndx = htab->stub_globals++; | |
8342 | h = stub_entry->h; | |
8343 | hashes[symndx] = &h->elf; | |
8344 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8345 | if (h->oh != NULL && h->oh->is_func) | |
8346 | h = h->oh; | |
8347 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8348 | /* H is an opd symbol. The addend must be zero. */ | |
8349 | r->r_addend = 0; | |
8350 | else | |
8351 | { | |
8352 | off = (h->elf.root.u.def.value | |
8353 | + h->elf.root.u.def.section->output_offset | |
8354 | + h->elf.root.u.def.section->output_section->vma); | |
8355 | r->r_addend -= off; | |
8356 | } | |
8357 | } | |
8358 | } | |
721956f4 | 8359 | break; |
e86ce104 | 8360 | |
721956f4 | 8361 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8362 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8363 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8364 | stub_entry->root.string + 9, | |
b34976b6 | 8365 | FALSE, FALSE); |
721956f4 AM |
8366 | if (br_entry == NULL) |
8367 | { | |
8368 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8369 | stub_entry->root.string); |
b34976b6 AM |
8370 | htab->stub_error = TRUE; |
8371 | return FALSE; | |
721956f4 AM |
8372 | } |
8373 | ||
8374 | off = (stub_entry->target_value | |
8375 | + stub_entry->target_section->output_offset | |
8376 | + stub_entry->target_section->output_section->vma); | |
8377 | ||
4ce794b7 AM |
8378 | bfd_put_64 (htab->brlt->owner, off, |
8379 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8380 | |
ee75fd95 | 8381 | if (htab->relbrlt != NULL) |
721956f4 AM |
8382 | { |
8383 | /* Create a reloc for the branch lookup table entry. */ | |
8384 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8385 | bfd_byte *rl; |
5d1634d7 | 8386 | |
721956f4 | 8387 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8388 | + htab->brlt->output_offset |
8389 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8390 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8391 | rela.r_addend = off; | |
8392 | ||
4ce794b7 AM |
8393 | rl = htab->relbrlt->contents; |
8394 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8395 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
8396 | } |
8397 | ||
8398 | off = (br_entry->offset | |
4ce794b7 AM |
8399 | + htab->brlt->output_offset |
8400 | + htab->brlt->output_section->vma | |
8401 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8402 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8403 | |
ad8e1ba5 | 8404 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8405 | { |
8406 | (*_bfd_error_handler) | |
e86ce104 | 8407 | (_("linkage table error against `%s'"), |
721956f4 | 8408 | stub_entry->root.string); |
5d1634d7 | 8409 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8410 | htab->stub_error = TRUE; |
8411 | return FALSE; | |
5d1634d7 | 8412 | } |
41bd81ab | 8413 | |
721956f4 | 8414 | indx = off; |
ad8e1ba5 AM |
8415 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8416 | { | |
97b639ba | 8417 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8418 | loc += 4; |
97b639ba | 8419 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8420 | size = 16; |
8421 | } | |
8422 | else | |
8423 | { | |
8424 | bfd_vma r2off; | |
8425 | ||
8426 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8427 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8428 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8429 | loc += 4; |
97b639ba | 8430 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8431 | loc += 4; |
97b639ba | 8432 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8433 | loc += 4; |
97b639ba | 8434 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8435 | loc += 4; |
97b639ba | 8436 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8437 | size = 28; |
8438 | } | |
8439 | loc += 4; | |
97b639ba | 8440 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8441 | loc += 4; |
97b639ba | 8442 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8443 | break; |
5d1634d7 | 8444 | |
721956f4 | 8445 | case ppc_stub_plt_call: |
c862ae31 AM |
8446 | /* Do the best we can for shared libraries built without |
8447 | exporting ".foo" for each "foo". This can happen when symbol | |
8448 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8449 | if (stub_entry->h->oh != NULL |
8450 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8451 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8452 | { |
8453 | /* Point the symbol at the stub. There may be multiple stubs, | |
8454 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8455 | defined somewhere. Maybe defining the symbol in the stub |
8456 | section is a silly idea. If we didn't do this, htab->top_id | |
8457 | could disappear. */ | |
34814b9f AM |
8458 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8459 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8460 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8461 | } |
8462 | ||
721956f4 | 8463 | /* Now build the stub. */ |
411e1bfb AM |
8464 | off = (bfd_vma) -1; |
8465 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8466 | if (ent->addend == stub_entry->addend) | |
8467 | { | |
8468 | off = ent->plt.offset; | |
8469 | break; | |
8470 | } | |
721956f4 AM |
8471 | if (off >= (bfd_vma) -2) |
8472 | abort (); | |
8473 | ||
8474 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8475 | off += (htab->plt->output_offset |
8476 | + htab->plt->output_section->vma | |
8477 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8478 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8479 | |
ad8e1ba5 | 8480 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8481 | { |
8482 | (*_bfd_error_handler) | |
8483 | (_("linkage table error against `%s'"), | |
8484 | stub_entry->h->elf.root.root.string); | |
8485 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8486 | htab->stub_error = TRUE; |
8487 | return FALSE; | |
721956f4 AM |
8488 | } |
8489 | ||
97b639ba | 8490 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8491 | size = p - loc; |
8492 | break; | |
8493 | ||
8494 | default: | |
8495 | BFD_FAIL (); | |
b34976b6 | 8496 | return FALSE; |
721956f4 AM |
8497 | } |
8498 | ||
eea6121a | 8499 | stub_entry->stub_sec->size += size; |
97b639ba | 8500 | |
ee75fd95 | 8501 | if (htab->emit_stub_syms) |
97b639ba AM |
8502 | { |
8503 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8504 | size_t len1, len2; |
8505 | char *name; | |
8506 | const char *const stub_str[] = { "long_branch", | |
8507 | "long_branch_r2off", | |
8508 | "plt_branch", | |
8509 | "plt_branch_r2off", | |
8510 | "plt_call" }; | |
8511 | ||
8512 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8513 | len2 = strlen (stub_entry->root.string); | |
8514 | name = bfd_malloc (len1 + len2 + 2); | |
8515 | if (name == NULL) | |
8516 | return FALSE; | |
8517 | memcpy (name, stub_entry->root.string, 9); | |
8518 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8519 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8520 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8521 | if (h == NULL) |
8522 | return FALSE; | |
8523 | if (h->root.type == bfd_link_hash_new) | |
8524 | { | |
8525 | h->root.type = bfd_link_hash_defined; | |
8526 | h->root.u.def.section = stub_entry->stub_sec; | |
8527 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8528 | h->ref_regular = 1; |
8529 | h->def_regular = 1; | |
8530 | h->ref_regular_nonweak = 1; | |
8531 | h->forced_local = 1; | |
8532 | h->non_elf = 0; | |
97b639ba AM |
8533 | } |
8534 | } | |
8535 | ||
b34976b6 | 8536 | return TRUE; |
721956f4 AM |
8537 | } |
8538 | ||
8539 | /* As above, but don't actually build the stub. Just bump offset so | |
8540 | we know stub section sizes, and select plt_branch stubs where | |
8541 | long_branch stubs won't do. */ | |
8542 | ||
b34976b6 | 8543 | static bfd_boolean |
4ce794b7 | 8544 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8545 | { |
8546 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8547 | struct bfd_link_info *info; |
721956f4 AM |
8548 | struct ppc_link_hash_table *htab; |
8549 | bfd_vma off; | |
8550 | int size; | |
8551 | ||
8552 | /* Massage our args to the form they really have. */ | |
8553 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8554 | info = in_arg; |
8555 | ||
8556 | htab = ppc_hash_table (info); | |
721956f4 AM |
8557 | |
8558 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8559 | { | |
411e1bfb | 8560 | struct plt_entry *ent; |
58ac9f71 | 8561 | off = (bfd_vma) -1; |
411e1bfb AM |
8562 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8563 | if (ent->addend == stub_entry->addend) | |
8564 | { | |
8565 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8566 | break; | |
8567 | } | |
58ac9f71 | 8568 | if (off >= (bfd_vma) -2) |
411e1bfb | 8569 | abort (); |
4ce794b7 AM |
8570 | off += (htab->plt->output_offset |
8571 | + htab->plt->output_section->vma | |
8572 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8573 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8574 | |
ad8e1ba5 | 8575 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8576 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8577 | size += 4; |
8578 | } | |
8579 | else | |
8580 | { | |
ad8e1ba5 AM |
8581 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8582 | variants. */ | |
721956f4 AM |
8583 | off = (stub_entry->target_value |
8584 | + stub_entry->target_section->output_offset | |
8585 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8586 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8587 | + stub_entry->stub_sec->output_offset |
8588 | + stub_entry->stub_sec->output_section->vma); | |
8589 | ||
ad8e1ba5 AM |
8590 | /* Reset the stub type from the plt variant in case we now |
8591 | can reach with a shorter stub. */ | |
8592 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8593 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8594 | ||
8595 | size = 4; | |
8596 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8597 | { | |
8598 | off -= 12; | |
8599 | size = 16; | |
8600 | } | |
8601 | ||
8602 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8603 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8604 | { | |
8605 | struct ppc_branch_hash_entry *br_entry; | |
8606 | ||
8607 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8608 | stub_entry->root.string + 9, | |
b34976b6 | 8609 | TRUE, FALSE); |
721956f4 AM |
8610 | if (br_entry == NULL) |
8611 | { | |
8612 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8613 | stub_entry->root.string); |
b34976b6 AM |
8614 | htab->stub_error = TRUE; |
8615 | return FALSE; | |
721956f4 AM |
8616 | } |
8617 | ||
8618 | if (br_entry->iter != htab->stub_iteration) | |
8619 | { | |
8620 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8621 | br_entry->offset = htab->brlt->size; |
8622 | htab->brlt->size += 8; | |
63bc6f6c | 8623 | |
ee75fd95 | 8624 | if (htab->relbrlt != NULL) |
eea6121a | 8625 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 8626 | } |
ad8e1ba5 AM |
8627 | |
8628 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8629 | size = 16; |
ad8e1ba5 AM |
8630 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8631 | size = 28; | |
721956f4 | 8632 | } |
ee75fd95 AM |
8633 | |
8634 | if (info->emitrelocations | |
8635 | && (stub_entry->stub_type == ppc_stub_long_branch | |
8636 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
8637 | stub_entry->stub_sec->reloc_count += 1; | |
721956f4 AM |
8638 | } |
8639 | ||
eea6121a | 8640 | stub_entry->stub_sec->size += size; |
b34976b6 | 8641 | return TRUE; |
721956f4 AM |
8642 | } |
8643 | ||
8644 | /* Set up various things so that we can make a list of input sections | |
8645 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8646 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8647 | |
8648 | int | |
4c52953f AM |
8649 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8650 | struct bfd_link_info *info, | |
8651 | int no_multi_toc) | |
721956f4 AM |
8652 | { |
8653 | bfd *input_bfd; | |
734b6cf9 | 8654 | int top_id, top_index, id; |
721956f4 | 8655 | asection *section; |
734b6cf9 | 8656 | asection **input_list; |
721956f4 AM |
8657 | bfd_size_type amt; |
8658 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8659 | ||
4c52953f AM |
8660 | htab->no_multi_toc = no_multi_toc; |
8661 | ||
4ce794b7 | 8662 | if (htab->brlt == NULL) |
721956f4 AM |
8663 | return 0; |
8664 | ||
1e2f5b6e | 8665 | /* Find the top input section id. */ |
3d6f9012 | 8666 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8667 | input_bfd != NULL; |
8668 | input_bfd = input_bfd->link_next) | |
8669 | { | |
721956f4 AM |
8670 | for (section = input_bfd->sections; |
8671 | section != NULL; | |
8672 | section = section->next) | |
8673 | { | |
8674 | if (top_id < section->id) | |
8675 | top_id = section->id; | |
8676 | } | |
8677 | } | |
721956f4 | 8678 | |
8f3bab57 | 8679 | htab->top_id = top_id; |
721956f4 | 8680 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8681 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8682 | if (htab->stub_group == NULL) |
8683 | return -1; | |
8684 | ||
3d6f9012 AM |
8685 | /* Set toc_off for com, und, abs and ind sections. */ |
8686 | for (id = 0; id < 3; id++) | |
8687 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8688 | |
3d6f9012 | 8689 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8690 | |
8691 | /* We can't use output_bfd->section_count here to find the top output | |
8692 | section index as some sections may have been removed, and | |
8423293d | 8693 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8694 | for (section = output_bfd->sections, top_index = 0; |
8695 | section != NULL; | |
8696 | section = section->next) | |
8697 | { | |
8698 | if (top_index < section->index) | |
8699 | top_index = section->index; | |
8700 | } | |
8701 | ||
8702 | htab->top_index = top_index; | |
8703 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8704 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8705 | htab->input_list = input_list; |
8706 | if (input_list == NULL) | |
8707 | return -1; | |
8708 | ||
721956f4 AM |
8709 | return 1; |
8710 | } | |
8711 | ||
e717da7e AM |
8712 | /* The linker repeatedly calls this function for each TOC input section |
8713 | and linker generated GOT section. Group input bfds such that the toc | |
8714 | within a group is less than 64k in size. Will break with cute linker | |
8715 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8716 | |
8717 | void | |
4ce794b7 | 8718 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8719 | { |
8720 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8721 | ||
4c52953f AM |
8722 | if (!htab->no_multi_toc) |
8723 | { | |
8724 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8725 | bfd_vma off = addr - htab->toc_curr; | |
8726 | ||
8727 | if (off + isec->size > 0x10000) | |
8728 | htab->toc_curr = addr; | |
99877b66 | 8729 | |
4c52953f AM |
8730 | elf_gp (isec->owner) = (htab->toc_curr |
8731 | - elf_gp (isec->output_section->owner) | |
8732 | + TOC_BASE_OFF); | |
8733 | } | |
ad8e1ba5 AM |
8734 | } |
8735 | ||
8736 | /* Called after the last call to the above function. */ | |
8737 | ||
8738 | void | |
4c52953f | 8739 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8740 | { |
8741 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8742 | |
4c52953f AM |
8743 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8744 | ||
ad8e1ba5 AM |
8745 | /* toc_curr tracks the TOC offset used for code sections below in |
8746 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8747 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8748 | } |
8749 | ||
9b5ecbd0 AM |
8750 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8751 | calls, then there's no need to use toc adjusting stubs when branching | |
8752 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8753 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8754 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8755 | for a stub was detected. If called from the top level, a return of | |
8756 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8757 | |
8758 | static int | |
4ce794b7 | 8759 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8760 | { |
4c52953f AM |
8761 | Elf_Internal_Rela *relstart, *rel; |
8762 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8763 | int ret; |
4c52953f | 8764 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8765 | |
772119ce AM |
8766 | /* We know none of our code bearing sections will need toc stubs. */ |
8767 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8768 | return 0; | |
8769 | ||
eea6121a | 8770 | if (isec->size == 0) |
082c50f8 AM |
8771 | return 0; |
8772 | ||
4c52953f AM |
8773 | if (isec->output_section == NULL) |
8774 | return 0; | |
8775 | ||
9b5ecbd0 AM |
8776 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8777 | the function that hit an exception. */ | |
4c52953f AM |
8778 | if (strcmp (isec->name, ".fixup") == 0) |
8779 | return 0; | |
9b5ecbd0 | 8780 | |
4c52953f AM |
8781 | if (isec->reloc_count == 0) |
8782 | return 0; | |
8783 | ||
8784 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8785 | info->keep_memory); | |
8786 | if (relstart == NULL) | |
8787 | return -1; | |
8788 | ||
8789 | /* Look for branches to outside of this section. */ | |
8790 | local_syms = NULL; | |
8791 | ret = 0; | |
8792 | htab = ppc_hash_table (info); | |
8793 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8794 | { |
4c52953f AM |
8795 | enum elf_ppc64_reloc_type r_type; |
8796 | unsigned long r_symndx; | |
8797 | struct elf_link_hash_entry *h; | |
8798 | Elf_Internal_Sym *sym; | |
8799 | asection *sym_sec; | |
8800 | long *opd_adjust; | |
8801 | bfd_vma sym_value; | |
8802 | bfd_vma dest; | |
8803 | ||
8804 | r_type = ELF64_R_TYPE (rel->r_info); | |
8805 | if (r_type != R_PPC64_REL24 | |
8806 | && r_type != R_PPC64_REL14 | |
8807 | && r_type != R_PPC64_REL14_BRTAKEN | |
8808 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8809 | continue; | |
8810 | ||
8811 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8812 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8813 | isec->owner)) | |
9b5ecbd0 | 8814 | { |
4c52953f AM |
8815 | ret = -1; |
8816 | break; | |
9b5ecbd0 | 8817 | } |
9b5ecbd0 | 8818 | |
2917689a AM |
8819 | /* Calls to dynamic lib functions go through a plt call stub |
8820 | that uses r2. Branches to undefined symbols might be a call | |
8821 | using old-style dot symbols that can be satisfied by a plt | |
8822 | call into a new-style dynamic library. */ | |
4c52953f | 8823 | if (sym_sec == NULL) |
2917689a AM |
8824 | { |
8825 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8826 | if (eh != NULL | |
8827 | && eh->oh != NULL | |
8828 | && eh->oh->elf.plt.plist != NULL) | |
8829 | { | |
8830 | ret = 1; | |
8831 | break; | |
8832 | } | |
4c52953f | 8833 | |
2917689a AM |
8834 | /* Ignore other undefined symbols. */ |
8835 | continue; | |
8836 | } | |
8837 | ||
8838 | /* Assume branches to other sections not included in the link need | |
8839 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8840 | if (sym_sec->output_section == NULL) |
8841 | { | |
8842 | ret = 1; | |
8843 | break; | |
8844 | } | |
8845 | ||
8846 | if (h == NULL) | |
8847 | sym_value = sym->st_value; | |
8848 | else | |
8849 | { | |
8850 | if (h->root.type != bfd_link_hash_defined | |
8851 | && h->root.type != bfd_link_hash_defweak) | |
8852 | abort (); | |
8853 | sym_value = h->root.u.def.value; | |
8854 | } | |
8855 | sym_value += rel->r_addend; | |
8856 | ||
8857 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8858 | opd_adjust = get_opd_info (sym_sec); | |
8859 | if (opd_adjust != NULL) | |
8860 | { | |
4c52953f AM |
8861 | if (h == NULL) |
8862 | { | |
8863 | long adjust; | |
8864 | ||
8865 | adjust = opd_adjust[sym->st_value / 8]; | |
8866 | if (adjust == -1) | |
8867 | /* Assume deleted functions won't ever be called. */ | |
8868 | continue; | |
8869 | sym_value += adjust; | |
8870 | } | |
8871 | ||
8872 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8873 | if (dest == (bfd_vma) -1) | |
8874 | continue; | |
8875 | } | |
8876 | else | |
8877 | dest = (sym_value | |
8878 | + sym_sec->output_offset | |
8879 | + sym_sec->output_section->vma); | |
8880 | ||
8881 | /* Ignore branch to self. */ | |
8882 | if (sym_sec == isec) | |
8883 | continue; | |
8884 | ||
8885 | /* If the called function uses the toc, we need a stub. */ | |
8886 | if (sym_sec->has_toc_reloc | |
8887 | || sym_sec->makes_toc_func_call) | |
8888 | { | |
8889 | ret = 1; | |
8890 | break; | |
8891 | } | |
8892 | ||
8893 | /* Assume any branch that needs a long branch stub might in fact | |
8894 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8895 | else if (dest - (isec->output_offset | |
8896 | + isec->output_section->vma | |
8897 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8898 | { |
8899 | ret = 1; | |
8900 | break; | |
8901 | } | |
4c52953f AM |
8902 | |
8903 | /* If calling back to a section in the process of being tested, we | |
8904 | can't say for sure that no toc adjusting stubs are needed, so | |
8905 | don't return zero. */ | |
8906 | else if (sym_sec->call_check_in_progress) | |
8907 | ret = 2; | |
8908 | ||
8909 | /* Branches to another section that itself doesn't have any TOC | |
8910 | references are OK. Recursively call ourselves to check. */ | |
8911 | else if (sym_sec->id <= htab->top_id | |
8912 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8913 | { | |
8914 | int recur; | |
8915 | ||
8916 | /* Mark current section as indeterminate, so that other | |
8917 | sections that call back to current won't be marked as | |
8918 | known. */ | |
8919 | isec->call_check_in_progress = 1; | |
8920 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8921 | isec->call_check_in_progress = 0; | |
8922 | ||
8923 | if (recur < 0) | |
8924 | { | |
8925 | /* An error. Exit. */ | |
8926 | ret = -1; | |
8927 | break; | |
8928 | } | |
8929 | else if (recur <= 1) | |
8930 | { | |
8931 | /* Known result. Mark as checked and set section flag. */ | |
8932 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8933 | if (recur != 0) | |
8934 | { | |
8935 | sym_sec->makes_toc_func_call = 1; | |
8936 | ret = 1; | |
8937 | break; | |
8938 | } | |
8939 | } | |
8940 | else | |
8941 | { | |
8942 | /* Unknown result. Continue checking. */ | |
8943 | ret = 2; | |
8944 | } | |
8945 | } | |
9b5ecbd0 AM |
8946 | } |
8947 | ||
4c52953f AM |
8948 | if (local_syms != NULL |
8949 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8950 | != (unsigned char *) local_syms)) | |
8951 | free (local_syms); | |
8952 | if (elf_section_data (isec)->relocs != relstart) | |
8953 | free (relstart); | |
8954 | ||
9b5ecbd0 AM |
8955 | return ret; |
8956 | } | |
8957 | ||
721956f4 AM |
8958 | /* The linker repeatedly calls this function for each input section, |
8959 | in the order that input sections are linked into output sections. | |
8960 | Build lists of input sections to determine groupings between which | |
8961 | we may insert linker stubs. */ | |
8962 | ||
9b5ecbd0 | 8963 | bfd_boolean |
4ce794b7 | 8964 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8965 | { |
8966 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8967 | ||
734b6cf9 AM |
8968 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8969 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8970 | { |
734b6cf9 | 8971 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8972 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8973 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8974 | /* This happens to make the list in reverse order, |
8975 | which is what we want. */ | |
734b6cf9 AM |
8976 | PREV_SEC (isec) = *list; |
8977 | *list = isec; | |
721956f4 | 8978 | } |
ad8e1ba5 | 8979 | |
4c52953f | 8980 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8981 | { |
4c52953f AM |
8982 | /* If a code section has a function that uses the TOC then we need |
8983 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8984 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8985 | can't find their function symbol (shouldn't ever happen now). */ | |
8986 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8987 | { | |
8988 | if (elf_gp (isec->owner) != 0) | |
8989 | htab->toc_curr = elf_gp (isec->owner); | |
8990 | } | |
8991 | else if (htab->stub_group[isec->id].toc_off == 0) | |
8992 | { | |
8993 | int ret = toc_adjusting_stub_needed (info, isec); | |
8994 | if (ret < 0) | |
8995 | return FALSE; | |
8996 | else | |
8997 | isec->makes_toc_func_call = ret & 1; | |
8998 | } | |
9b5ecbd0 | 8999 | } |
ad8e1ba5 AM |
9000 | |
9001 | /* Functions that don't use the TOC can belong in any TOC group. | |
9002 | Use the last TOC base. This happens to make _init and _fini | |
9003 | pasting work. */ | |
9004 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9005 | return TRUE; |
721956f4 AM |
9006 | } |
9007 | ||
9008 | /* See whether we can group stub sections together. Grouping stub | |
9009 | sections may result in fewer stubs. More importantly, we need to | |
9010 | put all .init* and .fini* stubs at the beginning of the .init or | |
9011 | .fini output sections respectively, because glibc splits the | |
9012 | _init and _fini functions into multiple parts. Putting a stub in | |
9013 | the middle of a function is not a good idea. */ | |
9014 | ||
9015 | static void | |
4ce794b7 AM |
9016 | group_sections (struct ppc_link_hash_table *htab, |
9017 | bfd_size_type stub_group_size, | |
9018 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9019 | { |
7c8fe5c4 AM |
9020 | asection **list; |
9021 | bfd_size_type stub14_group_size; | |
9022 | bfd_boolean suppress_size_errors; | |
9023 | ||
9024 | suppress_size_errors = FALSE; | |
9025 | stub14_group_size = stub_group_size; | |
9026 | if (stub_group_size == 1) | |
9027 | { | |
9028 | /* Default values. */ | |
9029 | if (stubs_always_before_branch) | |
9030 | { | |
9031 | stub_group_size = 0x1e00000; | |
9032 | stub14_group_size = 0x7800; | |
9033 | } | |
9034 | else | |
9035 | { | |
9036 | stub_group_size = 0x1c00000; | |
9037 | stub14_group_size = 0x7000; | |
9038 | } | |
9039 | suppress_size_errors = TRUE; | |
9040 | } | |
9041 | ||
9042 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9043 | do |
721956f4 | 9044 | { |
734b6cf9 AM |
9045 | asection *tail = *list; |
9046 | while (tail != NULL) | |
721956f4 | 9047 | { |
734b6cf9 AM |
9048 | asection *curr; |
9049 | asection *prev; | |
9050 | bfd_size_type total; | |
9051 | bfd_boolean big_sec; | |
9052 | bfd_vma curr_toc; | |
9053 | ||
9054 | curr = tail; | |
eea6121a | 9055 | total = tail->size; |
7c8fe5c4 AM |
9056 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9057 | ? stub14_group_size : stub_group_size); | |
9058 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9059 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9060 | tail->owner, tail); | |
734b6cf9 AM |
9061 | curr_toc = htab->stub_group[tail->id].toc_off; |
9062 | ||
9063 | while ((prev = PREV_SEC (curr)) != NULL | |
9064 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9065 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9066 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9067 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9068 | curr = prev; |
9069 | ||
9070 | /* OK, the size from the start of CURR to the end is less | |
9071 | than stub_group_size and thus can be handled by one stub | |
9072 | section. (or the tail section is itself larger than | |
9073 | stub_group_size, in which case we may be toast.) We | |
9074 | should really be keeping track of the total size of stubs | |
9075 | added here, as stubs contribute to the final output | |
9076 | section size. That's a little tricky, and this way will | |
9077 | only break if stubs added make the total size more than | |
9078 | 2^25, ie. for the default stub_group_size, if stubs total | |
9079 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9080 | do | |
721956f4 AM |
9081 | { |
9082 | prev = PREV_SEC (tail); | |
734b6cf9 | 9083 | /* Set up this stub group. */ |
721956f4 AM |
9084 | htab->stub_group[tail->id].link_sec = curr; |
9085 | } | |
734b6cf9 AM |
9086 | while (tail != curr && (tail = prev) != NULL); |
9087 | ||
9088 | /* But wait, there's more! Input sections up to stub_group_size | |
9089 | bytes before the stub section can be handled by it too. | |
9090 | Don't do this if we have a really large section after the | |
9091 | stubs, as adding more stubs increases the chance that | |
9092 | branches may not reach into the stub section. */ | |
9093 | if (!stubs_always_before_branch && !big_sec) | |
9094 | { | |
9095 | total = 0; | |
9096 | while (prev != NULL | |
9097 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9098 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9099 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9100 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9101 | { | |
9102 | tail = prev; | |
9103 | prev = PREV_SEC (tail); | |
9104 | htab->stub_group[tail->id].link_sec = curr; | |
9105 | } | |
9106 | } | |
9107 | tail = prev; | |
721956f4 AM |
9108 | } |
9109 | } | |
734b6cf9 AM |
9110 | while (list-- != htab->input_list); |
9111 | free (htab->input_list); | |
721956f4 AM |
9112 | #undef PREV_SEC |
9113 | } | |
9114 | ||
721956f4 AM |
9115 | /* Determine and set the size of the stub section for a final link. |
9116 | ||
9117 | The basic idea here is to examine all the relocations looking for | |
9118 | PC-relative calls to a target that is unreachable with a "bl" | |
9119 | instruction. */ | |
9120 | ||
b34976b6 | 9121 | bfd_boolean |
4ce794b7 | 9122 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9123 | struct bfd_link_info *info, |
9124 | bfd_signed_vma group_size, | |
9125 | asection *(*add_stub_section) (const char *, asection *), | |
9126 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9127 | { |
9128 | bfd_size_type stub_group_size; | |
b34976b6 | 9129 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9130 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9131 | ||
9132 | /* Stash our params away. */ | |
721956f4 AM |
9133 | htab->add_stub_section = add_stub_section; |
9134 | htab->layout_sections_again = layout_sections_again; | |
9135 | stubs_always_before_branch = group_size < 0; | |
9136 | if (group_size < 0) | |
9137 | stub_group_size = -group_size; | |
9138 | else | |
9139 | stub_group_size = group_size; | |
721956f4 AM |
9140 | |
9141 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9142 | ||
721956f4 AM |
9143 | while (1) |
9144 | { | |
9145 | bfd *input_bfd; | |
9146 | unsigned int bfd_indx; | |
9147 | asection *stub_sec; | |
721956f4 AM |
9148 | |
9149 | htab->stub_iteration += 1; | |
721956f4 AM |
9150 | |
9151 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9152 | input_bfd != NULL; | |
9153 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9154 | { | |
9155 | Elf_Internal_Shdr *symtab_hdr; | |
9156 | asection *section; | |
6cdc0ccc | 9157 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9158 | |
67f93c31 AM |
9159 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9160 | continue; | |
9161 | ||
721956f4 AM |
9162 | /* We'll need the symbol table in a second. */ |
9163 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
9164 | if (symtab_hdr->sh_info == 0) | |
9165 | continue; | |
9166 | ||
721956f4 AM |
9167 | /* Walk over each section attached to the input bfd. */ |
9168 | for (section = input_bfd->sections; | |
9169 | section != NULL; | |
9170 | section = section->next) | |
9171 | { | |
721956f4 | 9172 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9173 | |
9174 | /* If there aren't any relocs, then there's nothing more | |
9175 | to do. */ | |
9176 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9177 | || (section->flags & SEC_ALLOC) == 0 |
9178 | || (section->flags & SEC_LOAD) == 0 | |
9179 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9180 | || section->reloc_count == 0) |
9181 | continue; | |
9182 | ||
9183 | /* If this section is a link-once section that will be | |
9184 | discarded, then don't create any stubs. */ | |
9185 | if (section->output_section == NULL | |
9186 | || section->output_section->owner != output_bfd) | |
9187 | continue; | |
9188 | ||
1e2f5b6e AM |
9189 | /* Get the relocs. */ |
9190 | internal_relocs | |
4ce794b7 | 9191 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9192 | info->keep_memory); |
721956f4 | 9193 | if (internal_relocs == NULL) |
1e2f5b6e | 9194 | goto error_ret_free_local; |
721956f4 AM |
9195 | |
9196 | /* Now examine each relocation. */ | |
9197 | irela = internal_relocs; | |
9198 | irelaend = irela + section->reloc_count; | |
9199 | for (; irela < irelaend; irela++) | |
9200 | { | |
4ce794b7 AM |
9201 | enum elf_ppc64_reloc_type r_type; |
9202 | unsigned int r_indx; | |
721956f4 AM |
9203 | enum ppc_stub_type stub_type; |
9204 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9205 | asection *sym_sec, *code_sec; |
721956f4 AM |
9206 | bfd_vma sym_value; |
9207 | bfd_vma destination; | |
8843416a | 9208 | bfd_boolean ok_dest; |
721956f4 | 9209 | struct ppc_link_hash_entry *hash; |
8387904d | 9210 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9211 | struct elf_link_hash_entry *h; |
9212 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9213 | char *stub_name; |
9214 | const asection *id_sec; | |
8387904d | 9215 | long *opd_adjust; |
721956f4 AM |
9216 | |
9217 | r_type = ELF64_R_TYPE (irela->r_info); | |
9218 | r_indx = ELF64_R_SYM (irela->r_info); | |
9219 | ||
4ce794b7 | 9220 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9221 | { |
9222 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9223 | goto error_ret_free_internal; |
721956f4 AM |
9224 | } |
9225 | ||
9226 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9227 | if (r_type != R_PPC64_REL24 |
9228 | && r_type != R_PPC64_REL14 | |
9229 | && r_type != R_PPC64_REL14_BRTAKEN | |
9230 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9231 | continue; |
9232 | ||
9233 | /* Now determine the call target, its name, value, | |
9234 | section. */ | |
411e1bfb AM |
9235 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9236 | r_indx, input_bfd)) | |
9237 | goto error_ret_free_internal; | |
9238 | hash = (struct ppc_link_hash_entry *) h; | |
9239 | ||
8843416a | 9240 | ok_dest = FALSE; |
8387904d | 9241 | fdh = NULL; |
7fe2b9a6 | 9242 | sym_value = 0; |
411e1bfb | 9243 | if (hash == NULL) |
721956f4 | 9244 | { |
411e1bfb | 9245 | sym_value = sym->st_value; |
8843416a | 9246 | ok_dest = TRUE; |
721956f4 | 9247 | } |
7fe2b9a6 AM |
9248 | else if (hash->elf.root.type == bfd_link_hash_defined |
9249 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9250 | { | |
9251 | sym_value = hash->elf.root.u.def.value; | |
9252 | if (sym_sec->output_section != NULL) | |
9253 | ok_dest = TRUE; | |
9254 | } | |
9255 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9256 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9257 | { |
99877b66 | 9258 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9259 | use the func descriptor sym instead if it is |
9260 | defined. */ | |
ceb1f1ef | 9261 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9262 | && (fdh = get_fdh (hash, htab)) != NULL) |
9263 | { | |
8387904d AM |
9264 | if (fdh->elf.root.type == bfd_link_hash_defined |
9265 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9266 | { | |
9267 | sym_sec = fdh->elf.root.u.def.section; | |
9268 | sym_value = fdh->elf.root.u.def.value; | |
9269 | if (sym_sec->output_section != NULL) | |
9270 | ok_dest = TRUE; | |
9271 | } | |
99877b66 AM |
9272 | else |
9273 | fdh = NULL; | |
8387904d | 9274 | } |
7fe2b9a6 AM |
9275 | } |
9276 | else | |
9277 | { | |
9278 | bfd_set_error (bfd_error_bad_value); | |
9279 | goto error_ret_free_internal; | |
721956f4 AM |
9280 | } |
9281 | ||
8843416a AM |
9282 | destination = 0; |
9283 | if (ok_dest) | |
9284 | { | |
9285 | sym_value += irela->r_addend; | |
9286 | destination = (sym_value | |
9287 | + sym_sec->output_offset | |
9288 | + sym_sec->output_section->vma); | |
9289 | } | |
9290 | ||
8387904d AM |
9291 | code_sec = sym_sec; |
9292 | opd_adjust = get_opd_info (sym_sec); | |
9293 | if (opd_adjust != NULL) | |
9294 | { | |
9295 | bfd_vma dest; | |
9296 | ||
9297 | if (hash == NULL) | |
9298 | { | |
3f764659 | 9299 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9300 | if (adjust == -1) |
9301 | continue; | |
9302 | sym_value += adjust; | |
9303 | } | |
9304 | dest = opd_entry_value (sym_sec, sym_value, | |
9305 | &code_sec, &sym_value); | |
9306 | if (dest != (bfd_vma) -1) | |
9307 | { | |
9308 | destination = dest; | |
9309 | if (fdh != NULL) | |
9310 | { | |
9311 | /* Fixup old ABI sym to point at code | |
9312 | entry. */ | |
99877b66 | 9313 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9314 | hash->elf.root.u.def.section = code_sec; |
9315 | hash->elf.root.u.def.value = sym_value; | |
9316 | } | |
9317 | } | |
9318 | } | |
9319 | ||
721956f4 AM |
9320 | /* Determine what (if any) linker stub is needed. */ |
9321 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9322 | destination); | |
ad8e1ba5 AM |
9323 | |
9324 | if (stub_type != ppc_stub_plt_call) | |
9325 | { | |
9326 | /* Check whether we need a TOC adjusting stub. | |
9327 | Since the linker pastes together pieces from | |
9328 | different object files when creating the | |
9329 | _init and _fini functions, it may be that a | |
9330 | call to what looks like a local sym is in | |
9331 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9332 | if (code_sec != NULL |
9333 | && code_sec->output_section != NULL | |
9334 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9335 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9336 | && (code_sec->has_toc_reloc |
9337 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9338 | stub_type = ppc_stub_long_branch_r2off; |
9339 | } | |
9340 | ||
721956f4 AM |
9341 | if (stub_type == ppc_stub_none) |
9342 | continue; | |
9343 | ||
411e1bfb AM |
9344 | /* __tls_get_addr calls might be eliminated. */ |
9345 | if (stub_type != ppc_stub_plt_call | |
9346 | && hash != NULL | |
8387904d AM |
9347 | && (hash == htab->tls_get_addr |
9348 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9349 | && section->has_tls_reloc |
9350 | && irela != internal_relocs) | |
9351 | { | |
9352 | /* Get tls info. */ | |
e7b938ca | 9353 | char *tls_mask; |
411e1bfb | 9354 | |
0d4792f7 | 9355 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9356 | irela - 1, input_bfd)) |
9357 | goto error_ret_free_internal; | |
e7b938ca | 9358 | if (*tls_mask != 0) |
411e1bfb AM |
9359 | continue; |
9360 | } | |
9361 | ||
721956f4 AM |
9362 | /* Support for grouping stub sections. */ |
9363 | id_sec = htab->stub_group[section->id].link_sec; | |
9364 | ||
9365 | /* Get the name of this stub. */ | |
9366 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9367 | if (!stub_name) | |
9368 | goto error_ret_free_internal; | |
9369 | ||
9370 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9371 | stub_name, FALSE, FALSE); |
721956f4 AM |
9372 | if (stub_entry != NULL) |
9373 | { | |
9374 | /* The proper stub has already been created. */ | |
9375 | free (stub_name); | |
9376 | continue; | |
9377 | } | |
9378 | ||
9379 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9380 | if (stub_entry == NULL) | |
9381 | { | |
9382 | free (stub_name); | |
6cdc0ccc AM |
9383 | error_ret_free_internal: |
9384 | if (elf_section_data (section)->relocs == NULL) | |
9385 | free (internal_relocs); | |
9386 | error_ret_free_local: | |
9387 | if (local_syms != NULL | |
9388 | && (symtab_hdr->contents | |
9389 | != (unsigned char *) local_syms)) | |
9390 | free (local_syms); | |
b34976b6 | 9391 | return FALSE; |
721956f4 AM |
9392 | } |
9393 | ||
ad8e1ba5 | 9394 | stub_entry->stub_type = stub_type; |
721956f4 | 9395 | stub_entry->target_value = sym_value; |
8387904d | 9396 | stub_entry->target_section = code_sec; |
721956f4 | 9397 | stub_entry->h = hash; |
411e1bfb | 9398 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9399 | |
9400 | if (stub_entry->h != NULL) | |
9401 | htab->stub_globals += 1; | |
721956f4 AM |
9402 | } |
9403 | ||
9404 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9405 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9406 | free (internal_relocs); |
721956f4 | 9407 | } |
6cdc0ccc AM |
9408 | |
9409 | if (local_syms != NULL | |
9410 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9411 | { | |
9412 | if (!info->keep_memory) | |
9413 | free (local_syms); | |
9414 | else | |
9415 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9416 | } | |
721956f4 AM |
9417 | } |
9418 | ||
5c3dead3 | 9419 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9420 | stub sections. */ |
9421 | for (stub_sec = htab->stub_bfd->sections; | |
9422 | stub_sec != NULL; | |
9423 | stub_sec = stub_sec->next) | |
e717da7e | 9424 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9425 | { |
5c3dead3 | 9426 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9427 | stub_sec->size = 0; |
9428 | stub_sec->reloc_count = 0; | |
9429 | } | |
eea6121a AM |
9430 | |
9431 | htab->brlt->size = 0; | |
ee75fd95 | 9432 | if (htab->relbrlt != NULL) |
eea6121a | 9433 | htab->relbrlt->size = 0; |
721956f4 | 9434 | |
63bc6f6c | 9435 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9436 | |
5c3dead3 AM |
9437 | for (stub_sec = htab->stub_bfd->sections; |
9438 | stub_sec != NULL; | |
9439 | stub_sec = stub_sec->next) | |
9440 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9441 | && stub_sec->rawsize != stub_sec->size) | |
9442 | break; | |
9443 | ||
9444 | /* Exit from this loop when no stubs have been added, and no stubs | |
9445 | have changed size. */ | |
9446 | if (stub_sec == NULL) | |
9447 | break; | |
9448 | ||
721956f4 AM |
9449 | /* Ask the linker to do its stuff. */ |
9450 | (*htab->layout_sections_again) (); | |
9451 | } | |
9452 | ||
c456f082 | 9453 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9454 | section is empty, but it's too late. If we strip sections here, |
9455 | the dynamic symbol table is corrupted since the section symbol | |
9456 | for the stripped section isn't written. */ | |
721956f4 | 9457 | |
b34976b6 | 9458 | return TRUE; |
721956f4 AM |
9459 | } |
9460 | ||
9461 | /* Called after we have determined section placement. If sections | |
805fc799 | 9462 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9463 | |
805fc799 | 9464 | bfd_vma |
4ce794b7 | 9465 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9466 | { |
805fc799 AM |
9467 | asection *s; |
9468 | bfd_vma TOCstart; | |
721956f4 | 9469 | |
805fc799 AM |
9470 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9471 | order. The TOC starts where the first of these sections starts. */ | |
9472 | s = bfd_get_section_by_name (obfd, ".got"); | |
9473 | if (s == NULL) | |
9474 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9475 | if (s == NULL) | |
9476 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9477 | if (s == NULL) | |
9478 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9479 | if (s == NULL) | |
9480 | { | |
9481 | /* This may happen for | |
9482 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9483 | .toc directive | |
9484 | o bad linker script | |
9485 | o --gc-sections and empty TOC sections | |
9486 | ||
9487 | FIXME: Warn user? */ | |
9488 | ||
9489 | /* Look for a likely section. We probably won't even be | |
9490 | using TOCstart. */ | |
9491 | for (s = obfd->sections; s != NULL; s = s->next) | |
9492 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9493 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9494 | break; | |
721956f4 | 9495 | if (s == NULL) |
805fc799 AM |
9496 | for (s = obfd->sections; s != NULL; s = s->next) |
9497 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9498 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9499 | break; | |
721956f4 | 9500 | if (s == NULL) |
805fc799 AM |
9501 | for (s = obfd->sections; s != NULL; s = s->next) |
9502 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9503 | break; | |
721956f4 | 9504 | if (s == NULL) |
805fc799 AM |
9505 | for (s = obfd->sections; s != NULL; s = s->next) |
9506 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9507 | break; | |
9508 | } | |
721956f4 | 9509 | |
805fc799 AM |
9510 | TOCstart = 0; |
9511 | if (s != NULL) | |
9512 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9513 | |
805fc799 | 9514 | return TOCstart; |
721956f4 AM |
9515 | } |
9516 | ||
9517 | /* Build all the stubs associated with the current output file. | |
9518 | The stubs are kept in a hash table attached to the main linker | |
9519 | hash table. This function is called via gldelf64ppc_finish. */ | |
9520 | ||
b34976b6 | 9521 | bfd_boolean |
4ce794b7 AM |
9522 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9523 | struct bfd_link_info *info, | |
9524 | char **stats) | |
5d1634d7 AM |
9525 | { |
9526 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9527 | asection *stub_sec; |
5d1634d7 | 9528 | bfd_byte *p; |
e717da7e | 9529 | int stub_sec_count = 0; |
5d1634d7 | 9530 | |
ad8e1ba5 | 9531 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9532 | |
9533 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9534 | for (stub_sec = htab->stub_bfd->sections; |
9535 | stub_sec != NULL; | |
9536 | stub_sec = stub_sec->next) | |
eea6121a AM |
9537 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9538 | && stub_sec->size != 0) | |
e717da7e | 9539 | { |
eea6121a AM |
9540 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9541 | if (stub_sec->contents == NULL) | |
9542 | return FALSE; | |
9543 | /* We want to check that built size is the same as calculated | |
9544 | size. rawsize is a convenient location to use. */ | |
9545 | stub_sec->rawsize = stub_sec->size; | |
9546 | stub_sec->size = 0; | |
e717da7e | 9547 | } |
5d1634d7 | 9548 | |
23eb7e01 | 9549 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9550 | { |
9f951329 | 9551 | unsigned int indx; |
ad8e1ba5 | 9552 | bfd_vma plt0; |
9f951329 | 9553 | |
721956f4 | 9554 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9555 | if (htab->emit_stub_syms) |
9556 | { | |
9557 | struct elf_link_hash_entry *h; | |
9558 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9559 | if (h == NULL) | |
9560 | return FALSE; | |
9561 | if (h->root.type == bfd_link_hash_new) | |
9562 | { | |
9563 | h->root.type = bfd_link_hash_defined; | |
9564 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9565 | h->root.u.def.value = 8; |
f5385ebf AM |
9566 | h->ref_regular = 1; |
9567 | h->def_regular = 1; | |
9568 | h->ref_regular_nonweak = 1; | |
9569 | h->forced_local = 1; | |
9570 | h->non_elf = 0; | |
97b639ba AM |
9571 | } |
9572 | } | |
4ce794b7 | 9573 | p = htab->glink->contents; |
ee4bf8d2 AM |
9574 | plt0 = (htab->plt->output_section->vma |
9575 | + htab->plt->output_offset | |
9576 | - (htab->glink->output_section->vma | |
9577 | + htab->glink->output_offset | |
9578 | + 16)); | |
9579 | bfd_put_64 (htab->glink->owner, plt0, p); | |
9580 | p += 8; | |
9581 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 9582 | p += 4; |
ee4bf8d2 | 9583 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 9584 | p += 4; |
ee4bf8d2 | 9585 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 9586 | p += 4; |
ee4bf8d2 | 9587 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 9588 | p += 4; |
ee4bf8d2 | 9589 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 9590 | p += 4; |
ee4bf8d2 | 9591 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 9592 | p += 4; |
ee4bf8d2 | 9593 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 9594 | p += 4; |
4ce794b7 | 9595 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9596 | p += 4; |
4ce794b7 | 9597 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9598 | p += 4; |
4ce794b7 | 9599 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9600 | p += 4; |
4ce794b7 | 9601 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 9602 | p += 4; |
ee4bf8d2 AM |
9603 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
9604 | { | |
9605 | bfd_put_32 (htab->glink->owner, NOP, p); | |
9606 | p += 4; | |
9607 | } | |
ad8e1ba5 | 9608 | |
9f951329 AM |
9609 | /* Build the .glink lazy link call stubs. */ |
9610 | indx = 0; | |
eea6121a | 9611 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9612 | { |
9613 | if (indx < 0x8000) | |
9614 | { | |
4ce794b7 | 9615 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9616 | p += 4; |
9617 | } | |
9618 | else | |
9619 | { | |
4ce794b7 | 9620 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9621 | p += 4; |
4ce794b7 | 9622 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9623 | p += 4; |
9624 | } | |
4ce794b7 | 9625 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 9626 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 9627 | indx++; |
9f951329 AM |
9628 | p += 4; |
9629 | } | |
eea6121a | 9630 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9631 | } |
5d1634d7 | 9632 | |
eea6121a | 9633 | if (htab->brlt->size != 0) |
721956f4 | 9634 | { |
4ce794b7 | 9635 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9636 | htab->brlt->size); |
4ce794b7 | 9637 | if (htab->brlt->contents == NULL) |
b34976b6 | 9638 | return FALSE; |
721956f4 | 9639 | } |
ee75fd95 | 9640 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9641 | { |
9642 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9643 | htab->relbrlt->size); |
63bc6f6c AM |
9644 | if (htab->relbrlt->contents == NULL) |
9645 | return FALSE; | |
9646 | } | |
5d1634d7 | 9647 | |
721956f4 AM |
9648 | /* Build the stubs as directed by the stub hash table. */ |
9649 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9650 | |
aa8a7074 AM |
9651 | if (htab->relbrlt != NULL) |
9652 | htab->relbrlt->reloc_count = 0; | |
9653 | ||
721956f4 AM |
9654 | for (stub_sec = htab->stub_bfd->sections; |
9655 | stub_sec != NULL; | |
9656 | stub_sec = stub_sec->next) | |
e717da7e AM |
9657 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9658 | { | |
9659 | stub_sec_count += 1; | |
eea6121a | 9660 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9661 | break; |
9662 | } | |
5d1634d7 | 9663 | |
721956f4 | 9664 | if (stub_sec != NULL |
eea6121a | 9665 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9666 | { |
b34976b6 | 9667 | htab->stub_error = TRUE; |
721956f4 | 9668 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9669 | } |
721956f4 | 9670 | |
d2a300cf AM |
9671 | if (htab->stub_error) |
9672 | return FALSE; | |
9673 | ||
9674 | if (stats != NULL) | |
9675 | { | |
9676 | *stats = bfd_malloc (500); | |
9677 | if (*stats == NULL) | |
9678 | return FALSE; | |
9679 | ||
ee75fd95 | 9680 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9681 | " branch %lu\n" |
9682 | " toc adjust %lu\n" | |
9683 | " long branch %lu\n" | |
9684 | " long toc adj %lu\n" | |
9685 | " plt call %lu"), | |
e717da7e | 9686 | stub_sec_count, |
ee75fd95 | 9687 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9688 | htab->stub_count[ppc_stub_long_branch - 1], |
9689 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9690 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9691 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9692 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9693 | } |
9694 | return TRUE; | |
5bd4f169 AM |
9695 | } |
9696 | ||
99877b66 AM |
9697 | /* This function undoes the changes made by add_symbol_adjust. */ |
9698 | ||
9699 | static bfd_boolean | |
9700 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9701 | { | |
9702 | struct ppc_link_hash_entry *eh; | |
9703 | ||
9704 | if (h->root.type == bfd_link_hash_indirect) | |
9705 | return TRUE; | |
9706 | ||
9707 | if (h->root.type == bfd_link_hash_warning) | |
9708 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9709 | ||
9710 | eh = (struct ppc_link_hash_entry *) h; | |
9711 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9712 | return TRUE; | |
9713 | ||
9714 | eh->elf.root.type = bfd_link_hash_undefined; | |
9715 | return TRUE; | |
9716 | } | |
9717 | ||
9718 | void | |
9719 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9720 | { | |
9721 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9722 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9723 | } | |
9724 | ||
60124e18 AM |
9725 | /* What to do when ld finds relocations against symbols defined in |
9726 | discarded sections. */ | |
9727 | ||
9728 | static unsigned int | |
9729 | ppc64_elf_action_discarded (asection *sec) | |
9730 | { | |
9731 | if (strcmp (".opd", sec->name) == 0) | |
9732 | return 0; | |
9733 | ||
9734 | if (strcmp (".toc", sec->name) == 0) | |
9735 | return 0; | |
9736 | ||
bce50a28 JJ |
9737 | if (strcmp (".toc1", sec->name) == 0) |
9738 | return 0; | |
9739 | ||
60124e18 AM |
9740 | return _bfd_elf_default_action_discarded (sec); |
9741 | } | |
9742 | ||
5bd4f169 AM |
9743 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9744 | to handle the relocations for a section. | |
9745 | ||
9746 | The relocs are always passed as Rela structures; if the section | |
9747 | actually uses Rel structures, the r_addend field will always be | |
9748 | zero. | |
9749 | ||
9750 | This function is responsible for adjust the section contents as | |
9751 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9752 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9753 | necessary. |
9754 | ||
9755 | This function does not have to worry about setting the reloc | |
9756 | address or the reloc symbol index. | |
9757 | ||
9758 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9759 | ||
9760 | LOCAL_SECTIONS is an array giving the section in the input file | |
9761 | corresponding to the st_shndx field of each local symbol. | |
9762 | ||
9763 | The global hash table entry for the global symbols can be found | |
9764 | via elf_sym_hashes (input_bfd). | |
9765 | ||
1049f94e | 9766 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9767 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9768 | going to be the section symbol corresponding to the output | |
9769 | section, which means that the addend must be adjusted | |
9770 | accordingly. */ | |
9771 | ||
b34976b6 | 9772 | static bfd_boolean |
4ce794b7 AM |
9773 | ppc64_elf_relocate_section (bfd *output_bfd, |
9774 | struct bfd_link_info *info, | |
9775 | bfd *input_bfd, | |
9776 | asection *input_section, | |
9777 | bfd_byte *contents, | |
9778 | Elf_Internal_Rela *relocs, | |
9779 | Elf_Internal_Sym *local_syms, | |
9780 | asection **local_sections) | |
5bd4f169 | 9781 | { |
65f38f15 | 9782 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9783 | Elf_Internal_Shdr *symtab_hdr; |
9784 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9785 | Elf_Internal_Rela *rel; |
9786 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9787 | Elf_Internal_Rela outrel; |
9788 | bfd_byte *loc; | |
411e1bfb | 9789 | struct got_entry **local_got_ents; |
5bd4f169 | 9790 | bfd_vma TOCstart; |
b34976b6 AM |
9791 | bfd_boolean ret = TRUE; |
9792 | bfd_boolean is_opd; | |
96e0dda4 | 9793 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9794 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 9795 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 9796 | |
65f38f15 | 9797 | /* Initialize howto table if needed. */ |
5bd4f169 | 9798 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9799 | ppc_howto_init (); |
9800 | ||
65f38f15 | 9801 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9802 | |
9803 | /* Don't relocate stub sections. */ | |
9804 | if (input_section->owner == htab->stub_bfd) | |
9805 | return TRUE; | |
9806 | ||
411e1bfb | 9807 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9808 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9809 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9810 | sym_hashes = elf_sym_hashes (input_bfd); | |
7c8fe5c4 | 9811 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 9812 | |
5bd4f169 AM |
9813 | rel = relocs; |
9814 | relend = relocs + input_section->reloc_count; | |
9815 | for (; rel < relend; rel++) | |
9816 | { | |
04c9666a | 9817 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9818 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9819 | bfd_reloc_status_type r; |
9820 | Elf_Internal_Sym *sym; | |
9821 | asection *sec; | |
039b3fef AM |
9822 | struct elf_link_hash_entry *h_elf; |
9823 | struct ppc_link_hash_entry *h; | |
9824 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9825 | const char *sym_name; |
0d4792f7 | 9826 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9827 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9828 | char sym_type; |
5bd4f169 | 9829 | bfd_vma relocation; |
b34976b6 AM |
9830 | bfd_boolean unresolved_reloc; |
9831 | bfd_boolean warned; | |
50bc7936 | 9832 | unsigned long insn, mask; |
721956f4 AM |
9833 | struct ppc_stub_hash_entry *stub_entry; |
9834 | bfd_vma max_br_offset; | |
9835 | bfd_vma from; | |
5bd4f169 | 9836 | |
4ce794b7 | 9837 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9838 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9839 | |
9840 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9841 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9842 | proper TOC base to use. */ | |
9843 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9844 | && rel != relocs | |
9845 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9846 | && is_opd) | |
9847 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9848 | ||
4ce794b7 AM |
9849 | sym = NULL; |
9850 | sec = NULL; | |
039b3fef | 9851 | h_elf = NULL; |
4ce794b7 | 9852 | sym_name = NULL; |
b34976b6 AM |
9853 | unresolved_reloc = FALSE; |
9854 | warned = FALSE; | |
4cc603a5 | 9855 | orig_addend = rel->r_addend; |
65f38f15 | 9856 | |
0b13192e | 9857 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9858 | { |
9859 | /* It's a local symbol. */ | |
4025353c AM |
9860 | long *opd_adjust; |
9861 | ||
5bd4f169 AM |
9862 | sym = local_syms + r_symndx; |
9863 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9864 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9865 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9866 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9867 | opd_adjust = get_opd_info (sec); |
9868 | if (opd_adjust != NULL) | |
1e2f5b6e | 9869 | { |
3f764659 | 9870 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9871 | if (adjust == -1) |
9872 | relocation = 0; | |
9873 | else | |
4cc603a5 AM |
9874 | { |
9875 | /* If this is a relocation against the opd section sym | |
9876 | and we have edited .opd, adjust the reloc addend so | |
9877 | that ld -r and ld --emit-relocs output is correct. | |
9878 | If it is a reloc against some other .opd symbol, | |
9879 | then the symbol value will be adjusted later. */ | |
9880 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9881 | rel->r_addend += adjust; | |
9882 | else | |
9883 | relocation += adjust; | |
9884 | } | |
1e2f5b6e | 9885 | } |
4cc603a5 AM |
9886 | if (info->relocatable) |
9887 | continue; | |
5bd4f169 AM |
9888 | } |
9889 | else | |
9890 | { | |
4cc603a5 AM |
9891 | if (info->relocatable) |
9892 | continue; | |
b2a8e766 AM |
9893 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9894 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9895 | h_elf, sec, relocation, |
b2a8e766 | 9896 | unresolved_reloc, warned); |
039b3fef AM |
9897 | sym_name = h_elf->root.root.string; |
9898 | sym_type = h_elf->type; | |
5bd4f169 | 9899 | } |
039b3fef | 9900 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9901 | |
951fd09b AM |
9902 | /* TLS optimizations. Replace instruction sequences and relocs |
9903 | based on information we collected in tls_optimize. We edit | |
9904 | RELOCS so that --emit-relocs will output something sensible | |
9905 | for the final instruction stream. */ | |
9906 | tls_mask = 0; | |
9907 | tls_gd = 0; | |
0d4792f7 | 9908 | toc_symndx = 0; |
d881513a | 9909 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9910 | { |
9911 | if (h != NULL) | |
039b3fef | 9912 | tls_mask = h->tls_mask; |
411e1bfb AM |
9913 | else if (local_got_ents != NULL) |
9914 | { | |
e7b938ca AM |
9915 | char *lgot_masks; |
9916 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9917 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9918 | } |
0d4792f7 AM |
9919 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9920 | { | |
9921 | /* Check for toc tls entries. */ | |
9922 | char *toc_tls; | |
9923 | ||
9924 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9925 | rel, input_bfd)) | |
9926 | return FALSE; | |
9927 | ||
9928 | if (toc_tls) | |
9929 | tls_mask = *toc_tls; | |
9930 | } | |
9931 | } | |
9932 | ||
9933 | /* Check that tls relocs are used with tls syms, and non-tls | |
9934 | relocs are used with non-tls syms. */ | |
9935 | if (r_symndx != 0 | |
9936 | && r_type != R_PPC64_NONE | |
9937 | && (h == NULL | |
039b3fef AM |
9938 | || h->elf.root.type == bfd_link_hash_defined |
9939 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9940 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9941 | { | |
9942 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9943 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9944 | ; | |
9945 | else | |
9946 | (*_bfd_error_handler) | |
9947 | (sym_type == STT_TLS | |
d003868e AM |
9948 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9949 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9950 | input_bfd, | |
9951 | input_section, | |
0d4792f7 AM |
9952 | (long) rel->r_offset, |
9953 | ppc64_elf_howto_table[r_type]->name, | |
9954 | sym_name); | |
411e1bfb AM |
9955 | } |
9956 | ||
9957 | /* Ensure reloc mapping code below stays sane. */ | |
9958 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9959 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9960 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9961 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9962 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9963 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9964 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9965 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9966 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9967 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9968 | abort (); | |
0d4792f7 | 9969 | |
411e1bfb AM |
9970 | switch (r_type) |
9971 | { | |
9972 | default: | |
411e1bfb AM |
9973 | break; |
9974 | ||
9975 | case R_PPC64_TOC16: | |
9976 | case R_PPC64_TOC16_LO: | |
9977 | case R_PPC64_TOC16_DS: | |
9978 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
9979 | { |
9980 | /* Check for toc tls entries. */ | |
9981 | char *toc_tls; | |
951fd09b | 9982 | int retval; |
411e1bfb | 9983 | |
0d4792f7 AM |
9984 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
9985 | rel, input_bfd); | |
951fd09b | 9986 | if (retval == 0) |
411e1bfb AM |
9987 | return FALSE; |
9988 | ||
9989 | if (toc_tls) | |
9990 | { | |
951fd09b | 9991 | tls_mask = *toc_tls; |
411e1bfb AM |
9992 | if (r_type == R_PPC64_TOC16_DS |
9993 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
9994 | { |
9995 | if (tls_mask != 0 | |
9996 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
9997 | goto toctprel; | |
9998 | } | |
411e1bfb | 9999 | else |
951fd09b AM |
10000 | { |
10001 | /* If we found a GD reloc pair, then we might be | |
10002 | doing a GD->IE transition. */ | |
10003 | if (retval == 2) | |
10004 | { | |
10005 | tls_gd = TLS_TPRELGD; | |
10006 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10007 | goto tls_get_addr_check; | |
10008 | } | |
10009 | else if (retval == 3) | |
10010 | { | |
10011 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10012 | goto tls_get_addr_check; | |
10013 | } | |
10014 | } | |
411e1bfb AM |
10015 | } |
10016 | } | |
10017 | break; | |
10018 | ||
10019 | case R_PPC64_GOT_TPREL16_DS: | |
10020 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10021 | if (tls_mask != 0 |
10022 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10023 | { |
81407a69 | 10024 | toctprel: |
4fe5ca5b | 10025 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10026 | insn &= 31 << 21; |
10027 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10028 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10029 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10030 | if (toc_symndx != 0) |
10031 | { | |
10032 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10033 | /* We changed the symbol. Start over in order to | |
10034 | get h, sym, sec etc. right. */ | |
10035 | rel--; | |
10036 | continue; | |
10037 | } | |
10038 | else | |
10039 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10040 | } |
10041 | break; | |
10042 | ||
10043 | case R_PPC64_TLS: | |
951fd09b AM |
10044 | if (tls_mask != 0 |
10045 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10046 | { |
50bc7936 | 10047 | bfd_vma rtra; |
411e1bfb | 10048 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10049 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10050 | == ((31 << 26) | (13 << 11))) |
10051 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10052 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10053 | == ((31 << 26) | (13 << 16))) |
10054 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10055 | else | |
10056 | abort (); | |
10057 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10058 | /* add -> addi. */ | |
10059 | insn = 14 << 26; | |
10060 | else if ((insn & (31 << 1)) == 23 << 1 | |
10061 | && ((insn & (31 << 6)) < 14 << 6 | |
10062 | || ((insn & (31 << 6)) >= 16 << 6 | |
10063 | && (insn & (31 << 6)) < 24 << 6))) | |
10064 | /* load and store indexed -> dform. */ | |
10065 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10066 | else if ((insn & (31 << 1)) == 21 << 1 | |
10067 | && (insn & (0x1a << 6)) == 0) | |
10068 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10069 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10070 | | ((insn >> 6) & 1)); | |
10071 | else if ((insn & (31 << 1)) == 21 << 1 | |
10072 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10073 | /* lwax -> lwa. */ | |
10074 | insn = (58 << 26) | 2; | |
10075 | else | |
10076 | abort (); | |
10077 | insn |= rtra; | |
10078 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10079 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10080 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10081 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10082 | r_type = R_PPC64_TPREL16_LO; |
10083 | if (toc_symndx != 0) | |
10084 | { | |
10085 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10086 | /* We changed the symbol. Start over in order to | |
10087 | get h, sym, sec etc. right. */ | |
10088 | rel--; | |
10089 | continue; | |
10090 | } | |
10091 | else | |
10092 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10093 | } |
10094 | break; | |
10095 | ||
411e1bfb AM |
10096 | case R_PPC64_GOT_TLSGD16_HI: |
10097 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10098 | tls_gd = TLS_TPRELGD; |
10099 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10100 | goto tls_gdld_hi; | |
10101 | break; | |
10102 | ||
411e1bfb AM |
10103 | case R_PPC64_GOT_TLSLD16_HI: |
10104 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10105 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10106 | { |
951fd09b AM |
10107 | tls_gdld_hi: |
10108 | if ((tls_mask & tls_gd) != 0) | |
10109 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10110 | + R_PPC64_GOT_TPREL16_DS); | |
10111 | else | |
411e1bfb | 10112 | { |
951fd09b | 10113 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10114 | rel->r_offset -= d_offset; |
951fd09b | 10115 | r_type = R_PPC64_NONE; |
411e1bfb | 10116 | } |
951fd09b | 10117 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10118 | } |
10119 | break; | |
10120 | ||
951fd09b AM |
10121 | case R_PPC64_GOT_TLSGD16: |
10122 | case R_PPC64_GOT_TLSGD16_LO: | |
10123 | tls_gd = TLS_TPRELGD; | |
10124 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10125 | goto tls_get_addr_check; | |
10126 | break; | |
411e1bfb | 10127 | |
951fd09b AM |
10128 | case R_PPC64_GOT_TLSLD16: |
10129 | case R_PPC64_GOT_TLSLD16_LO: | |
10130 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10131 | { | |
10132 | tls_get_addr_check: | |
10133 | if (rel + 1 < relend) | |
411e1bfb | 10134 | { |
951fd09b AM |
10135 | enum elf_ppc64_reloc_type r_type2; |
10136 | unsigned long r_symndx2; | |
10137 | struct elf_link_hash_entry *h2; | |
10138 | bfd_vma insn1, insn2, insn3; | |
10139 | bfd_vma offset; | |
10140 | ||
10141 | /* The next instruction should be a call to | |
10142 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 10143 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
10144 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
10145 | if (r_symndx2 < symtab_hdr->sh_info | |
10146 | || (r_type2 != R_PPC64_REL14 | |
10147 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
10148 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
10149 | && r_type2 != R_PPC64_REL24)) | |
10150 | break; | |
10151 | ||
10152 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
10153 | while (h2->root.type == bfd_link_hash_indirect | |
10154 | || h2->root.type == bfd_link_hash_warning) | |
10155 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
10156 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
10157 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
10158 | break; |
10159 | ||
10160 | /* OK, it checks out. Replace the call. */ | |
10161 | offset = rel[1].r_offset; | |
10162 | insn1 = bfd_get_32 (output_bfd, | |
4fe5ca5b | 10163 | contents + rel->r_offset - d_offset); |
951fd09b AM |
10164 | insn3 = bfd_get_32 (output_bfd, |
10165 | contents + offset + 4); | |
10166 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10167 | { |
951fd09b AM |
10168 | /* IE */ |
10169 | insn1 &= (1 << 26) - (1 << 2); | |
10170 | insn1 |= 58 << 26; /* ld */ | |
10171 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10172 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
10173 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10174 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10175 | + R_PPC64_GOT_TPREL16_DS); | |
10176 | else | |
10177 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
10178 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10179 | } |
10180 | else | |
951fd09b AM |
10181 | { |
10182 | /* LE */ | |
10183 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10184 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10185 | if (tls_gd == 0) | |
10186 | { | |
10187 | /* Was an LD reloc. */ | |
10188 | r_symndx = 0; | |
e1918d23 AM |
10189 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
10190 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10191 | } |
0d4792f7 AM |
10192 | else if (toc_symndx != 0) |
10193 | r_symndx = toc_symndx; | |
951fd09b AM |
10194 | r_type = R_PPC64_TPREL16_HA; |
10195 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10196 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10197 | R_PPC64_TPREL16_LO); | |
4fe5ca5b | 10198 | rel[1].r_offset += d_offset; |
951fd09b AM |
10199 | } |
10200 | if (insn3 == NOP | |
10201 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10202 | { | |
10203 | insn3 = insn2; | |
10204 | insn2 = NOP; | |
10205 | rel[1].r_offset += 4; | |
10206 | } | |
4fe5ca5b | 10207 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset); |
951fd09b AM |
10208 | bfd_put_32 (output_bfd, insn2, contents + offset); |
10209 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 10210 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 10211 | { |
0d4792f7 AM |
10212 | /* We changed the symbol. Start over in order |
10213 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
10214 | rel--; |
10215 | continue; | |
10216 | } | |
411e1bfb | 10217 | } |
411e1bfb | 10218 | } |
411e1bfb AM |
10219 | break; |
10220 | ||
10221 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10222 | if (rel + 1 < relend |
10223 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10224 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10225 | { |
951fd09b AM |
10226 | if ((tls_mask & TLS_GD) == 0) |
10227 | { | |
10228 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10229 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10230 | r_type = R_PPC64_TPREL64; | |
10231 | else | |
10232 | { | |
4ce794b7 | 10233 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10234 | r_type = R_PPC64_NONE; |
10235 | } | |
10236 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10237 | } | |
10238 | } | |
10239 | else | |
10240 | { | |
10241 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10242 | { |
4ce794b7 | 10243 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10244 | r_type = R_PPC64_NONE; |
951fd09b | 10245 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10246 | } |
411e1bfb AM |
10247 | } |
10248 | break; | |
10249 | ||
10250 | case R_PPC64_TPREL64: | |
951fd09b | 10251 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10252 | { |
10253 | r_type = R_PPC64_NONE; | |
10254 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10255 | } | |
10256 | break; | |
10257 | } | |
10258 | ||
10259 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10260 | insn = 0; |
b25116a9 AM |
10261 | max_br_offset = 1 << 25; |
10262 | addend = rel->r_addend; | |
65f38f15 | 10263 | switch (r_type) |
5bd4f169 AM |
10264 | { |
10265 | default: | |
65f38f15 | 10266 | break; |
5bd4f169 | 10267 | |
65f38f15 AM |
10268 | /* Branch taken prediction relocations. */ |
10269 | case R_PPC64_ADDR14_BRTAKEN: | |
10270 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10271 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10272 | /* Fall thru. */ | |
65f38f15 | 10273 | |
86c76c7b | 10274 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10275 | case R_PPC64_ADDR14_BRNTAKEN: |
10276 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10277 | insn |= bfd_get_32 (output_bfd, |
10278 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10279 | /* Fall thru. */ |
86c76c7b | 10280 | |
b25116a9 AM |
10281 | case R_PPC64_REL14: |
10282 | max_br_offset = 1 << 15; | |
10283 | /* Fall thru. */ | |
5bd4f169 | 10284 | |
65f38f15 | 10285 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10286 | /* Calls to functions with a different TOC, such as calls to |
10287 | shared objects, need to alter the TOC pointer. This is | |
10288 | done using a linkage stub. A REL24 branching to these | |
10289 | linkage stubs needs to be followed by a nop, as the nop | |
10290 | will be replaced with an instruction to restore the TOC | |
10291 | base pointer. */ | |
b25116a9 | 10292 | stub_entry = NULL; |
8387904d | 10293 | fdh = h; |
ad8e1ba5 | 10294 | if (((h != NULL |
039b3fef AM |
10295 | && (((fdh = h->oh) != NULL |
10296 | && fdh->elf.plt.plist != NULL) | |
10297 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10298 | || (sec != NULL |
ad8e1ba5 | 10299 | && sec->output_section != NULL |
b25116a9 | 10300 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10301 | && (htab->stub_group[sec->id].toc_off |
10302 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10303 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10304 | rel, htab)) != NULL |
10305 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10306 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10307 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10308 | { |
b25116a9 | 10309 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10310 | |
eea6121a | 10311 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10312 | { |
b25116a9 AM |
10313 | unsigned long nop; |
10314 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10315 | if (nop == NOP | |
10316 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10317 | { |
4ce794b7 | 10318 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10319 | contents + rel->r_offset + 4); |
b25116a9 | 10320 | can_plt_call = TRUE; |
41bd81ab | 10321 | } |
5bd4f169 | 10322 | } |
721956f4 AM |
10323 | |
10324 | if (!can_plt_call) | |
10325 | { | |
ad8e1ba5 AM |
10326 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10327 | { | |
10328 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10329 | and link, don't require a nop. However, don't |
10330 | allow tail calls in a shared library as they | |
10331 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10332 | unsigned long br; |
10333 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10334 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10335 | can_plt_call = TRUE; |
15b552e9 AM |
10336 | else |
10337 | stub_entry = NULL; | |
ad8e1ba5 | 10338 | } |
6ab189d5 | 10339 | else if (h != NULL |
039b3fef | 10340 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10341 | ".__libc_start_main") == 0) |
10342 | { | |
10343 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10344 | can_plt_call = TRUE; |
6ab189d5 | 10345 | } |
ad8e1ba5 AM |
10346 | else |
10347 | { | |
10348 | if (strcmp (input_section->output_section->name, | |
10349 | ".init") == 0 | |
10350 | || strcmp (input_section->output_section->name, | |
10351 | ".fini") == 0) | |
10352 | (*_bfd_error_handler) | |
d003868e | 10353 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10354 | "not supported using your crt files; " |
10355 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10356 | input_bfd, |
10357 | input_section, | |
ad8e1ba5 AM |
10358 | (long) rel->r_offset); |
10359 | else | |
10360 | (*_bfd_error_handler) | |
d003868e | 10361 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10362 | "does not allow automatic multiple TOCs; " |
10363 | "recompile with -mminimal-toc or " | |
10364 | "-fno-optimize-sibling-calls, " | |
10365 | "or make `%s' extern"), | |
d003868e AM |
10366 | input_bfd, |
10367 | input_section, | |
ad8e1ba5 AM |
10368 | (long) rel->r_offset, |
10369 | sym_name, | |
10370 | sym_name); | |
10371 | bfd_set_error (bfd_error_bad_value); | |
10372 | ret = FALSE; | |
10373 | } | |
721956f4 AM |
10374 | } |
10375 | ||
b25116a9 AM |
10376 | if (can_plt_call |
10377 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10378 | unresolved_reloc = FALSE; | |
10379 | } | |
10380 | ||
8387904d AM |
10381 | if (stub_entry == NULL |
10382 | && get_opd_info (sec) != NULL) | |
10383 | { | |
10384 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10385 | bfd_vma off = (relocation + addend |
10386 | - sec->output_section->vma | |
10387 | - sec->output_offset); | |
8387904d AM |
10388 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10389 | if (dest != (bfd_vma) -1) | |
10390 | { | |
10391 | relocation = dest; | |
10392 | addend = 0; | |
10393 | } | |
10394 | } | |
10395 | ||
b25116a9 AM |
10396 | /* If the branch is out of reach we ought to have a long |
10397 | branch stub. */ | |
10398 | from = (rel->r_offset | |
10399 | + input_section->output_offset | |
10400 | + input_section->output_section->vma); | |
10401 | ||
10402 | if (stub_entry == NULL | |
4cc603a5 | 10403 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10404 | >= 2 * max_br_offset) |
10405 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10406 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10407 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10408 | htab); | |
b25116a9 AM |
10409 | |
10410 | if (stub_entry != NULL) | |
10411 | { | |
10412 | /* Munge up the value and addend so that we call the stub | |
10413 | rather than the procedure directly. */ | |
10414 | relocation = (stub_entry->stub_offset | |
10415 | + stub_entry->stub_sec->output_offset | |
10416 | + stub_entry->stub_sec->output_section->vma); | |
10417 | addend = 0; | |
10418 | } | |
10419 | ||
10420 | if (insn != 0) | |
10421 | { | |
10422 | if (is_power4) | |
721956f4 | 10423 | { |
b25116a9 AM |
10424 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10425 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10426 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10427 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10428 | insn |= 0x02 << 21; | |
10429 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10430 | insn |= 0x08 << 21; | |
10431 | else | |
10432 | break; | |
10433 | } | |
10434 | else | |
10435 | { | |
10436 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10437 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10438 | insn ^= 0x01 << 21; |
721956f4 | 10439 | } |
b25116a9 AM |
10440 | |
10441 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10442 | } |
e86ce104 | 10443 | |
06da1e8e AM |
10444 | /* NOP out calls to undefined weak functions. |
10445 | We can thus call a weak function without first | |
10446 | checking whether the function is defined. */ | |
b25116a9 | 10447 | else if (h != NULL |
039b3fef | 10448 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10449 | && r_type == R_PPC64_REL24 |
10450 | && relocation == 0 | |
4cc603a5 | 10451 | && addend == 0) |
e86ce104 | 10452 | { |
06da1e8e AM |
10453 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10454 | continue; | |
e86ce104 | 10455 | } |
65f38f15 AM |
10456 | break; |
10457 | } | |
5bd4f169 | 10458 | |
65f38f15 | 10459 | /* Set `addend'. */ |
411e1bfb | 10460 | tls_type = 0; |
65f38f15 AM |
10461 | switch (r_type) |
10462 | { | |
10463 | default: | |
10464 | (*_bfd_error_handler) | |
d003868e AM |
10465 | (_("%B: unknown relocation type %d for symbol %s"), |
10466 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10467 | |
65f38f15 | 10468 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10469 | ret = FALSE; |
65f38f15 | 10470 | continue; |
5bd4f169 | 10471 | |
65f38f15 | 10472 | case R_PPC64_NONE: |
411e1bfb | 10473 | case R_PPC64_TLS: |
04c9666a AM |
10474 | case R_PPC64_GNU_VTINHERIT: |
10475 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10476 | continue; |
5bd4f169 AM |
10477 | |
10478 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10479 | address in the GOT as relocation value instead of the | |
411e1bfb | 10480 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10481 | symbol and put the symbol value there. */ |
411e1bfb AM |
10482 | case R_PPC64_GOT_TLSGD16: |
10483 | case R_PPC64_GOT_TLSGD16_LO: | |
10484 | case R_PPC64_GOT_TLSGD16_HI: | |
10485 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10486 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10487 | goto dogot; |
10488 | ||
10489 | case R_PPC64_GOT_TLSLD16: | |
10490 | case R_PPC64_GOT_TLSLD16_LO: | |
10491 | case R_PPC64_GOT_TLSLD16_HI: | |
10492 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10493 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10494 | goto dogot; |
10495 | ||
10496 | case R_PPC64_GOT_TPREL16_DS: | |
10497 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10498 | case R_PPC64_GOT_TPREL16_HI: | |
10499 | case R_PPC64_GOT_TPREL16_HA: | |
10500 | tls_type = TLS_TLS | TLS_TPREL; | |
10501 | goto dogot; | |
10502 | ||
10503 | case R_PPC64_GOT_DTPREL16_DS: | |
10504 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10505 | case R_PPC64_GOT_DTPREL16_HI: | |
10506 | case R_PPC64_GOT_DTPREL16_HA: | |
10507 | tls_type = TLS_TLS | TLS_DTPREL; | |
10508 | goto dogot; | |
10509 | ||
65f38f15 AM |
10510 | case R_PPC64_GOT16: |
10511 | case R_PPC64_GOT16_LO: | |
10512 | case R_PPC64_GOT16_HI: | |
10513 | case R_PPC64_GOT16_HA: | |
10514 | case R_PPC64_GOT16_DS: | |
10515 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10516 | dogot: |
5bd4f169 AM |
10517 | { |
10518 | /* Relocation is to the entry for this symbol in the global | |
10519 | offset table. */ | |
e717da7e | 10520 | asection *got; |
d881513a | 10521 | bfd_vma *offp; |
5bd4f169 | 10522 | bfd_vma off; |
d881513a | 10523 | unsigned long indx = 0; |
65f38f15 | 10524 | |
d881513a AM |
10525 | if (tls_type == (TLS_TLS | TLS_LD) |
10526 | && (h == NULL | |
f5385ebf | 10527 | || !h->elf.def_dynamic)) |
e717da7e | 10528 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10529 | else |
5bd4f169 | 10530 | { |
d881513a | 10531 | struct got_entry *ent; |
5bd4f169 | 10532 | |
d881513a AM |
10533 | if (h != NULL) |
10534 | { | |
10535 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10536 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10537 | &h->elf) | |
d881513a | 10538 | || (info->shared |
039b3fef | 10539 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10540 | /* This is actually a static link, or it is a |
10541 | -Bsymbolic link and the symbol is defined | |
10542 | locally, or the symbol was forced to be local | |
10543 | because of a version file. */ | |
10544 | ; | |
10545 | else | |
10546 | { | |
039b3fef | 10547 | indx = h->elf.dynindx; |
d881513a AM |
10548 | unresolved_reloc = FALSE; |
10549 | } | |
039b3fef | 10550 | ent = h->elf.got.glist; |
d881513a | 10551 | } |
411e1bfb | 10552 | else |
5bd4f169 | 10553 | { |
d881513a AM |
10554 | if (local_got_ents == NULL) |
10555 | abort (); | |
10556 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10557 | } |
d881513a AM |
10558 | |
10559 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10560 | if (ent->addend == orig_addend |
e717da7e | 10561 | && ent->owner == input_bfd |
d881513a AM |
10562 | && ent->tls_type == tls_type) |
10563 | break; | |
10564 | if (ent == NULL) | |
10565 | abort (); | |
10566 | offp = &ent->got.offset; | |
5bd4f169 | 10567 | } |
411e1bfb | 10568 | |
e717da7e AM |
10569 | got = ppc64_elf_tdata (input_bfd)->got; |
10570 | if (got == NULL) | |
10571 | abort (); | |
10572 | ||
411e1bfb AM |
10573 | /* The offset must always be a multiple of 8. We use the |
10574 | least significant bit to record whether we have already | |
10575 | processed this entry. */ | |
d881513a | 10576 | off = *offp; |
411e1bfb AM |
10577 | if ((off & 1) != 0) |
10578 | off &= ~1; | |
5bd4f169 AM |
10579 | else |
10580 | { | |
411e1bfb AM |
10581 | /* Generate relocs for the dynamic linker, except in |
10582 | the case of TLSLD where we'll use one entry per | |
10583 | module. */ | |
e717da7e AM |
10584 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10585 | ||
d881513a | 10586 | *offp = off | 1; |
4e795f50 AM |
10587 | if ((info->shared || indx != 0) |
10588 | && (h == NULL | |
039b3fef AM |
10589 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10590 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10591 | { |
e717da7e AM |
10592 | outrel.r_offset = (got->output_section->vma |
10593 | + got->output_offset | |
411e1bfb | 10594 | + off); |
4cc603a5 | 10595 | outrel.r_addend = addend; |
d881513a | 10596 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10597 | { |
411e1bfb | 10598 | outrel.r_addend = 0; |
e515b051 | 10599 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10600 | if (tls_type == (TLS_TLS | TLS_GD)) |
10601 | { | |
e717da7e AM |
10602 | loc = relgot->contents; |
10603 | loc += (relgot->reloc_count++ | |
d881513a AM |
10604 | * sizeof (Elf64_External_Rela)); |
10605 | bfd_elf64_swap_reloca_out (output_bfd, | |
10606 | &outrel, loc); | |
e515b051 | 10607 | outrel.r_offset += 8; |
4cc603a5 | 10608 | outrel.r_addend = addend; |
d881513a AM |
10609 | outrel.r_info |
10610 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10611 | } |
411e1bfb | 10612 | } |
951fd09b | 10613 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10614 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10615 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10616 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10617 | else if (indx == 0) | |
81407a69 AM |
10618 | { |
10619 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10620 | ||
10621 | /* Write the .got section contents for the sake | |
10622 | of prelink. */ | |
e717da7e | 10623 | loc = got->contents + off; |
23fbd6fa JJ |
10624 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10625 | loc); | |
81407a69 | 10626 | } |
411e1bfb AM |
10627 | else |
10628 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10629 | |
10630 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10631 | { |
10632 | outrel.r_addend += relocation; | |
10633 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10634 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10635 | } |
e717da7e AM |
10636 | loc = relgot->contents; |
10637 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10638 | * sizeof (Elf64_External_Rela)); |
10639 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10640 | } | |
10641 | ||
ad8e1ba5 | 10642 | /* Init the .got section contents here if we're not |
81407a69 | 10643 | emitting a reloc. */ |
d881513a | 10644 | else |
411e1bfb | 10645 | { |
4cc603a5 | 10646 | relocation += addend; |
7b609f53 AM |
10647 | if (tls_type == (TLS_TLS | TLS_LD)) |
10648 | relocation = 1; | |
10649 | else if (tls_type != 0) | |
411e1bfb | 10650 | { |
e1918d23 | 10651 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10652 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10653 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10654 | |
7b609f53 AM |
10655 | if (tls_type == (TLS_TLS | TLS_GD)) |
10656 | { | |
10657 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10658 | got->contents + off + 8); |
7b609f53 AM |
10659 | relocation = 1; |
10660 | } | |
411e1bfb | 10661 | } |
7b609f53 | 10662 | |
411e1bfb | 10663 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10664 | got->contents + off); |
5bd4f169 AM |
10665 | } |
10666 | } | |
10667 | ||
65f38f15 AM |
10668 | if (off >= (bfd_vma) -2) |
10669 | abort (); | |
10670 | ||
e717da7e | 10671 | relocation = got->output_offset + off; |
65f38f15 | 10672 | |
5bd4f169 | 10673 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10674 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10675 | } |
65f38f15 AM |
10676 | break; |
10677 | ||
10678 | case R_PPC64_PLT16_HA: | |
10679 | case R_PPC64_PLT16_HI: | |
10680 | case R_PPC64_PLT16_LO: | |
10681 | case R_PPC64_PLT32: | |
10682 | case R_PPC64_PLT64: | |
10683 | /* Relocation is to the entry for this symbol in the | |
10684 | procedure linkage table. */ | |
10685 | ||
10686 | /* Resolve a PLT reloc against a local symbol directly, | |
10687 | without using the procedure linkage table. */ | |
10688 | if (h == NULL) | |
10689 | break; | |
10690 | ||
411e1bfb AM |
10691 | /* It's possible that we didn't make a PLT entry for this |
10692 | symbol. This happens when statically linking PIC code, | |
10693 | or when using -Bsymbolic. Go find a match if there is a | |
10694 | PLT entry. */ | |
4ce794b7 | 10695 | if (htab->plt != NULL) |
65f38f15 | 10696 | { |
411e1bfb | 10697 | struct plt_entry *ent; |
039b3fef | 10698 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10699 | if (ent->addend == orig_addend |
411e1bfb AM |
10700 | && ent->plt.offset != (bfd_vma) -1) |
10701 | { | |
4ce794b7 AM |
10702 | relocation = (htab->plt->output_section->vma |
10703 | + htab->plt->output_offset | |
411e1bfb AM |
10704 | + ent->plt.offset); |
10705 | unresolved_reloc = FALSE; | |
10706 | } | |
65f38f15 | 10707 | } |
65f38f15 | 10708 | break; |
5bd4f169 | 10709 | |
0b13192e AM |
10710 | case R_PPC64_TOC: |
10711 | /* Relocation value is TOC base. */ | |
10712 | relocation = TOCstart; | |
10713 | if (r_symndx == 0) | |
10714 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10715 | else if (unresolved_reloc) |
10716 | ; | |
10717 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10718 | relocation += htab->stub_group[sec->id].toc_off; |
10719 | else | |
10720 | unresolved_reloc = TRUE; | |
10721 | goto dodyn2; | |
10722 | ||
5bd4f169 AM |
10723 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10724 | which is the address of the start of the TOC plus 0x8000. | |
10725 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10726 | in this order. */ | |
65f38f15 AM |
10727 | case R_PPC64_TOC16: |
10728 | case R_PPC64_TOC16_LO: | |
10729 | case R_PPC64_TOC16_HI: | |
10730 | case R_PPC64_TOC16_DS: | |
10731 | case R_PPC64_TOC16_LO_DS: | |
10732 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10733 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10734 | break; |
10735 | ||
10736 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10737 | case R_PPC64_SECTOFF: |
10738 | case R_PPC64_SECTOFF_LO: | |
10739 | case R_PPC64_SECTOFF_HI: | |
10740 | case R_PPC64_SECTOFF_DS: | |
10741 | case R_PPC64_SECTOFF_LO_DS: | |
10742 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10743 | if (sec != NULL) |
65f38f15 | 10744 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10745 | break; |
10746 | ||
721956f4 AM |
10747 | case R_PPC64_REL14: |
10748 | case R_PPC64_REL14_BRNTAKEN: | |
10749 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10750 | case R_PPC64_REL24: |
10751 | break; | |
10752 | ||
411e1bfb AM |
10753 | case R_PPC64_TPREL16: |
10754 | case R_PPC64_TPREL16_LO: | |
10755 | case R_PPC64_TPREL16_HI: | |
10756 | case R_PPC64_TPREL16_HA: | |
10757 | case R_PPC64_TPREL16_DS: | |
10758 | case R_PPC64_TPREL16_LO_DS: | |
10759 | case R_PPC64_TPREL16_HIGHER: | |
10760 | case R_PPC64_TPREL16_HIGHERA: | |
10761 | case R_PPC64_TPREL16_HIGHEST: | |
10762 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10763 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10764 | if (info->shared) |
10765 | /* The TPREL16 relocs shouldn't really be used in shared | |
10766 | libs as they will result in DT_TEXTREL being set, but | |
10767 | support them anyway. */ | |
10768 | goto dodyn; | |
10769 | break; | |
10770 | ||
10771 | case R_PPC64_DTPREL16: | |
10772 | case R_PPC64_DTPREL16_LO: | |
10773 | case R_PPC64_DTPREL16_HI: | |
10774 | case R_PPC64_DTPREL16_HA: | |
10775 | case R_PPC64_DTPREL16_DS: | |
10776 | case R_PPC64_DTPREL16_LO_DS: | |
10777 | case R_PPC64_DTPREL16_HIGHER: | |
10778 | case R_PPC64_DTPREL16_HIGHERA: | |
10779 | case R_PPC64_DTPREL16_HIGHEST: | |
10780 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10781 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10782 | break; |
10783 | ||
e515b051 AM |
10784 | case R_PPC64_DTPMOD64: |
10785 | relocation = 1; | |
10786 | addend = 0; | |
10787 | goto dodyn; | |
10788 | ||
411e1bfb | 10789 | case R_PPC64_TPREL64: |
e1918d23 | 10790 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10791 | goto dodyn; |
10792 | ||
10793 | case R_PPC64_DTPREL64: | |
e1918d23 | 10794 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10795 | /* Fall thru */ |
10796 | ||
65f38f15 AM |
10797 | /* Relocations that may need to be propagated if this is a |
10798 | dynamic object. */ | |
04c9666a | 10799 | case R_PPC64_REL30: |
65f38f15 AM |
10800 | case R_PPC64_REL32: |
10801 | case R_PPC64_REL64: | |
10802 | case R_PPC64_ADDR14: | |
10803 | case R_PPC64_ADDR14_BRNTAKEN: | |
10804 | case R_PPC64_ADDR14_BRTAKEN: | |
10805 | case R_PPC64_ADDR16: | |
10806 | case R_PPC64_ADDR16_DS: | |
10807 | case R_PPC64_ADDR16_HA: | |
10808 | case R_PPC64_ADDR16_HI: | |
10809 | case R_PPC64_ADDR16_HIGHER: | |
10810 | case R_PPC64_ADDR16_HIGHERA: | |
10811 | case R_PPC64_ADDR16_HIGHEST: | |
10812 | case R_PPC64_ADDR16_HIGHESTA: | |
10813 | case R_PPC64_ADDR16_LO: | |
10814 | case R_PPC64_ADDR16_LO_DS: | |
10815 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10816 | case R_PPC64_ADDR32: |
10817 | case R_PPC64_ADDR64: | |
10818 | case R_PPC64_UADDR16: | |
10819 | case R_PPC64_UADDR32: | |
10820 | case R_PPC64_UADDR64: | |
ec338859 AM |
10821 | /* r_symndx will be zero only for relocs against symbols |
10822 | from removed linkonce sections, or sections discarded by | |
10823 | a linker script. */ | |
411e1bfb | 10824 | dodyn: |
5d1634d7 | 10825 | if (r_symndx == 0) |
b1e24c02 DJ |
10826 | { |
10827 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10828 | contents + rel->r_offset); | |
10829 | break; | |
10830 | } | |
5d1634d7 AM |
10831 | /* Fall thru. */ |
10832 | ||
0b13192e | 10833 | dodyn2: |
5d1634d7 | 10834 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10835 | break; |
10836 | ||
41bd81ab AM |
10837 | if (NO_OPD_RELOCS && is_opd) |
10838 | break; | |
10839 | ||
65f38f15 | 10840 | if ((info->shared |
4e795f50 | 10841 | && (h == NULL |
039b3fef AM |
10842 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10843 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10844 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10845 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10846 | || (ELIMINATE_COPY_RELOCS |
10847 | && !info->shared | |
65f38f15 | 10848 | && h != NULL |
039b3fef | 10849 | && h->elf.dynindx != -1 |
f5385ebf AM |
10850 | && !h->elf.non_got_ref |
10851 | && h->elf.def_dynamic | |
10852 | && !h->elf.def_regular)) | |
65f38f15 AM |
10853 | { |
10854 | Elf_Internal_Rela outrel; | |
b34976b6 | 10855 | bfd_boolean skip, relocate; |
65f38f15 | 10856 | asection *sreloc; |
947216bf | 10857 | bfd_byte *loc; |
1cf1f670 | 10858 | bfd_vma out_off; |
65f38f15 AM |
10859 | |
10860 | /* When generating a dynamic object, these relocations | |
10861 | are copied into the output file to be resolved at run | |
10862 | time. */ | |
10863 | ||
b34976b6 AM |
10864 | skip = FALSE; |
10865 | relocate = FALSE; | |
65f38f15 | 10866 | |
1cf1f670 AM |
10867 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10868 | input_section, rel->r_offset); | |
10869 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10870 | skip = TRUE; |
1cf1f670 | 10871 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10872 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10873 | out_off += (input_section->output_section->vma |
10874 | + input_section->output_offset); | |
10875 | outrel.r_offset = out_off; | |
411e1bfb | 10876 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10877 | |
1cf1f670 AM |
10878 | /* Optimize unaligned reloc use. */ |
10879 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10880 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10881 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10882 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10883 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10884 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10885 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10886 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10887 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10888 | ||
65f38f15 | 10889 | if (skip) |
0bb2d96a | 10890 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10891 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10892 | && !is_opd |
10893 | && r_type != R_PPC64_TOC) | |
039b3fef | 10894 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10895 | else |
10896 | { | |
41bd81ab AM |
10897 | /* This symbol is local, or marked to become local, |
10898 | or this is an opd section reloc which must point | |
10899 | at a local function. */ | |
65f38f15 | 10900 | outrel.r_addend += relocation; |
e86ce104 | 10901 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10902 | { |
3fad3c7c | 10903 | if (is_opd && h != NULL) |
afbe61cf AM |
10904 | { |
10905 | /* Lie about opd entries. This case occurs | |
10906 | when building shared libraries and we | |
10907 | reference a function in another shared | |
3fad3c7c AM |
10908 | lib. The same thing happens for a weak |
10909 | definition in an application that's | |
10910 | overridden by a strong definition in a | |
10911 | shared lib. (I believe this is a generic | |
10912 | bug in binutils handling of weak syms.) | |
10913 | In these cases we won't use the opd | |
1e2f5b6e | 10914 | entry in this lib. */ |
b34976b6 | 10915 | unresolved_reloc = FALSE; |
afbe61cf | 10916 | } |
65f38f15 | 10917 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10918 | |
10919 | /* We need to relocate .opd contents for ld.so. | |
10920 | Prelink also wants simple and consistent rules | |
10921 | for relocs. This make all RELATIVE relocs have | |
10922 | *r_offset equal to r_addend. */ | |
10923 | relocate = TRUE; | |
65f38f15 AM |
10924 | } |
10925 | else | |
10926 | { | |
10927 | long indx = 0; | |
10928 | ||
41bd81ab | 10929 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10930 | ; |
10931 | else if (sec == NULL || sec->owner == NULL) | |
10932 | { | |
10933 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10934 | return FALSE; |
65f38f15 AM |
10935 | } |
10936 | else | |
10937 | { | |
10938 | asection *osec; | |
10939 | ||
10940 | osec = sec->output_section; | |
10941 | indx = elf_section_data (osec)->dynindx; | |
10942 | ||
74541ad4 AM |
10943 | if (indx == 0) |
10944 | { | |
10945 | if ((osec->flags & SEC_READONLY) == 0 | |
10946 | && htab->elf.data_index_section != NULL) | |
10947 | osec = htab->elf.data_index_section; | |
10948 | else | |
10949 | osec = htab->elf.text_index_section; | |
10950 | indx = elf_section_data (osec)->dynindx; | |
10951 | } | |
10952 | BFD_ASSERT (indx != 0); | |
10953 | ||
65f38f15 AM |
10954 | /* We are turning this relocation into one |
10955 | against a section symbol, so subtract out | |
10956 | the output section's address but not the | |
10957 | offset of the input section in the output | |
10958 | section. */ | |
10959 | outrel.r_addend -= osec->vma; | |
10960 | } | |
10961 | ||
10962 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10963 | } | |
10964 | } | |
10965 | ||
10966 | sreloc = elf_section_data (input_section)->sreloc; | |
10967 | if (sreloc == NULL) | |
10968 | abort (); | |
10969 | ||
dfbb6ac9 AM |
10970 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
10971 | >= sreloc->size) | |
10972 | abort (); | |
947216bf AM |
10973 | loc = sreloc->contents; |
10974 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10975 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10976 | ||
10977 | /* If this reloc is against an external symbol, it will | |
10978 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10979 | anything now. However, for the sake of prelink ensure |
10980 | that the section contents are a known value. */ | |
65f38f15 | 10981 | if (! relocate) |
81407a69 AM |
10982 | { |
10983 | unresolved_reloc = FALSE; | |
10984 | /* The value chosen here is quite arbitrary as ld.so | |
10985 | ignores section contents except for the special | |
10986 | case of .opd where the contents might be accessed | |
10987 | before relocation. Choose zero, as that won't | |
10988 | cause reloc overflow. */ | |
10989 | relocation = 0; | |
10990 | addend = 0; | |
10991 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
10992 | to improve backward compatibility with older | |
10993 | versions of ld. */ | |
10994 | if (r_type == R_PPC64_ADDR64) | |
10995 | addend = outrel.r_addend; | |
10996 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 10997 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
10998 | addend = (input_section->output_section->vma |
10999 | + input_section->output_offset | |
11000 | + rel->r_offset); | |
81407a69 | 11001 | } |
65f38f15 | 11002 | } |
5bd4f169 AM |
11003 | break; |
11004 | ||
65f38f15 AM |
11005 | case R_PPC64_COPY: |
11006 | case R_PPC64_GLOB_DAT: | |
11007 | case R_PPC64_JMP_SLOT: | |
11008 | case R_PPC64_RELATIVE: | |
11009 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11010 | files. */ | |
ae9a127f | 11011 | /* Fall through. */ |
65f38f15 AM |
11012 | |
11013 | case R_PPC64_PLTGOT16: | |
11014 | case R_PPC64_PLTGOT16_DS: | |
11015 | case R_PPC64_PLTGOT16_HA: | |
11016 | case R_PPC64_PLTGOT16_HI: | |
11017 | case R_PPC64_PLTGOT16_LO: | |
11018 | case R_PPC64_PLTGOT16_LO_DS: | |
11019 | case R_PPC64_PLTREL32: | |
11020 | case R_PPC64_PLTREL64: | |
11021 | /* These ones haven't been implemented yet. */ | |
11022 | ||
11023 | (*_bfd_error_handler) | |
d003868e AM |
11024 | (_("%B: relocation %s is not supported for symbol %s."), |
11025 | input_bfd, | |
4ce794b7 | 11026 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11027 | |
11028 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11029 | ret = FALSE; |
5bd4f169 | 11030 | continue; |
65f38f15 | 11031 | } |
5bd4f169 | 11032 | |
65f38f15 AM |
11033 | /* Do any further special processing. */ |
11034 | switch (r_type) | |
11035 | { | |
11036 | default: | |
11037 | break; | |
11038 | ||
11039 | case R_PPC64_ADDR16_HA: | |
11040 | case R_PPC64_ADDR16_HIGHERA: | |
11041 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11042 | case R_PPC64_TOC16_HA: |
11043 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11044 | case R_PPC64_TPREL16_HA: |
11045 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11046 | case R_PPC64_TPREL16_HIGHER: |
11047 | case R_PPC64_TPREL16_HIGHERA: | |
11048 | case R_PPC64_TPREL16_HIGHEST: | |
11049 | case R_PPC64_TPREL16_HIGHESTA: | |
11050 | case R_PPC64_DTPREL16_HIGHER: | |
11051 | case R_PPC64_DTPREL16_HIGHERA: | |
11052 | case R_PPC64_DTPREL16_HIGHEST: | |
11053 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11054 | /* It's just possible that this symbol is a weak symbol |
11055 | that's not actually defined anywhere. In that case, | |
11056 | 'sec' would be NULL, and we should leave the symbol | |
11057 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11058 | if (sec == NULL) |
11059 | break; | |
11060 | /* Fall thru */ | |
11061 | ||
11062 | case R_PPC64_GOT16_HA: | |
11063 | case R_PPC64_PLTGOT16_HA: | |
11064 | case R_PPC64_PLT16_HA: | |
11065 | case R_PPC64_GOT_TLSGD16_HA: | |
11066 | case R_PPC64_GOT_TLSLD16_HA: | |
11067 | case R_PPC64_GOT_TPREL16_HA: | |
11068 | case R_PPC64_GOT_DTPREL16_HA: | |
11069 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11070 | Bits 0:15 are not used. */ | |
11071 | addend += 0x8000; | |
65f38f15 AM |
11072 | break; |
11073 | ||
11074 | case R_PPC64_ADDR16_DS: | |
11075 | case R_PPC64_ADDR16_LO_DS: | |
11076 | case R_PPC64_GOT16_DS: | |
11077 | case R_PPC64_GOT16_LO_DS: | |
11078 | case R_PPC64_PLT16_LO_DS: | |
11079 | case R_PPC64_SECTOFF_DS: | |
11080 | case R_PPC64_SECTOFF_LO_DS: | |
11081 | case R_PPC64_TOC16_DS: | |
11082 | case R_PPC64_TOC16_LO_DS: | |
11083 | case R_PPC64_PLTGOT16_DS: | |
11084 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11085 | case R_PPC64_GOT_TPREL16_DS: |
11086 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11087 | case R_PPC64_GOT_DTPREL16_DS: | |
11088 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11089 | case R_PPC64_TPREL16_DS: | |
11090 | case R_PPC64_TPREL16_LO_DS: | |
11091 | case R_PPC64_DTPREL16_DS: | |
11092 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11093 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11094 | mask = 3; | |
11095 | /* If this reloc is against an lq insn, then the value must be | |
11096 | a multiple of 16. This is somewhat of a hack, but the | |
11097 | "correct" way to do this by defining _DQ forms of all the | |
11098 | _DS relocs bloats all reloc switches in this file. It | |
11099 | doesn't seem to make much sense to use any of these relocs | |
11100 | in data, so testing the insn should be safe. */ | |
494dac0c | 11101 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11102 | mask = 15; |
11103 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11104 | { |
11105 | (*_bfd_error_handler) | |
d003868e AM |
11106 | (_("%B: error: relocation %s not a multiple of %d"), |
11107 | input_bfd, | |
4ce794b7 | 11108 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11109 | mask + 1); |
65f38f15 | 11110 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11111 | ret = FALSE; |
65f38f15 AM |
11112 | continue; |
11113 | } | |
11114 | break; | |
5bd4f169 AM |
11115 | } |
11116 | ||
239e1f3a AM |
11117 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11118 | because such sections are not SEC_ALLOC and thus ld.so will | |
11119 | not process them. */ | |
65f38f15 | 11120 | if (unresolved_reloc |
239e1f3a | 11121 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11122 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11123 | { |
11124 | (*_bfd_error_handler) | |
d003868e AM |
11125 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11126 | input_bfd, | |
11127 | input_section, | |
9c07fe7c | 11128 | (long) rel->r_offset, |
7b609f53 | 11129 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11130 | h->elf.root.root.string); |
b34976b6 | 11131 | ret = FALSE; |
9c07fe7c | 11132 | } |
5bd4f169 | 11133 | |
65f38f15 | 11134 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11135 | input_bfd, |
11136 | input_section, | |
11137 | contents, | |
411e1bfb | 11138 | rel->r_offset, |
5bd4f169 AM |
11139 | relocation, |
11140 | addend); | |
11141 | ||
ef60b7ff | 11142 | if (r != bfd_reloc_ok) |
5bd4f169 | 11143 | { |
cd27b276 AM |
11144 | if (sym_name == NULL) |
11145 | sym_name = "(null)"; | |
11146 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11147 | { |
cd27b276 AM |
11148 | if (warned) |
11149 | continue; | |
11150 | if (h != NULL | |
039b3fef | 11151 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11152 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11153 | { |
11154 | /* Assume this is a call protected by other code that | |
11155 | detects the symbol is undefined. If this is the case, | |
11156 | we can safely ignore the overflow. If not, the | |
11157 | program is hosed anyway, and a little warning isn't | |
11158 | going to help. */ | |
11159 | ||
11160 | continue; | |
11161 | } | |
11162 | ||
ef60b7ff | 11163 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11164 | (info, (h ? &h->elf.root : NULL), sym_name, |
11165 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11166 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11167 | return FALSE; |
ef60b7ff AM |
11168 | } |
11169 | else | |
11170 | { | |
11171 | (*_bfd_error_handler) | |
d003868e AM |
11172 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11173 | input_bfd, | |
11174 | input_section, | |
7b609f53 | 11175 | (long) rel->r_offset, |
4ce794b7 | 11176 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11177 | sym_name, |
11178 | (int) r); | |
b34976b6 | 11179 | ret = FALSE; |
ef60b7ff | 11180 | } |
5bd4f169 | 11181 | } |
5bd4f169 AM |
11182 | } |
11183 | ||
645ea6a9 AM |
11184 | /* If we're emitting relocations, then shortly after this function |
11185 | returns, reloc offsets and addends for this section will be | |
11186 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11187 | file rather than the input. Save a copy of the relocs for |
11188 | opd_entry_value. */ | |
4cc603a5 | 11189 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11190 | { |
11191 | bfd_size_type amt; | |
11192 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11193 | rel = bfd_alloc (input_bfd, amt); | |
11194 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11195 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11196 | if (rel == NULL) | |
11197 | return FALSE; | |
11198 | memcpy (rel, relocs, amt); | |
11199 | } | |
5bd4f169 AM |
11200 | return ret; |
11201 | } | |
11202 | ||
754021d0 AM |
11203 | /* Adjust the value of any local symbols in opd sections. */ |
11204 | ||
11205 | static bfd_boolean | |
11206 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11207 | const char *name ATTRIBUTE_UNUSED, | |
11208 | Elf_Internal_Sym *elfsym, | |
11209 | asection *input_sec, | |
11210 | struct elf_link_hash_entry *h) | |
11211 | { | |
4025353c | 11212 | long *opd_adjust, adjust; |
754021d0 AM |
11213 | bfd_vma value; |
11214 | ||
4025353c AM |
11215 | if (h != NULL) |
11216 | return TRUE; | |
11217 | ||
11218 | opd_adjust = get_opd_info (input_sec); | |
11219 | if (opd_adjust == NULL) | |
754021d0 AM |
11220 | return TRUE; |
11221 | ||
11222 | value = elfsym->st_value - input_sec->output_offset; | |
11223 | if (!info->relocatable) | |
11224 | value -= input_sec->output_section->vma; | |
11225 | ||
3f764659 | 11226 | adjust = opd_adjust[value / 8]; |
4025353c AM |
11227 | if (adjust == -1) |
11228 | elfsym->st_value = 0; | |
11229 | else | |
11230 | elfsym->st_value += adjust; | |
754021d0 AM |
11231 | return TRUE; |
11232 | } | |
11233 | ||
5bd4f169 AM |
11234 | /* Finish up dynamic symbol handling. We set the contents of various |
11235 | dynamic sections here. */ | |
11236 | ||
b34976b6 | 11237 | static bfd_boolean |
4ce794b7 AM |
11238 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11239 | struct bfd_link_info *info, | |
11240 | struct elf_link_hash_entry *h, | |
11241 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11242 | { |
65f38f15 | 11243 | struct ppc_link_hash_table *htab; |
8387904d AM |
11244 | struct plt_entry *ent; |
11245 | Elf_Internal_Rela rela; | |
11246 | bfd_byte *loc; | |
5bd4f169 | 11247 | |
65f38f15 | 11248 | htab = ppc_hash_table (info); |
5bd4f169 | 11249 | |
8387904d AM |
11250 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11251 | if (ent->plt.offset != (bfd_vma) -1) | |
11252 | { | |
11253 | /* This symbol has an entry in the procedure linkage | |
11254 | table. Set it up. */ | |
11255 | ||
11256 | if (htab->plt == NULL | |
11257 | || htab->relplt == NULL | |
11258 | || htab->glink == NULL) | |
11259 | abort (); | |
11260 | ||
11261 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11262 | fill in the PLT entry. */ | |
11263 | rela.r_offset = (htab->plt->output_section->vma | |
11264 | + htab->plt->output_offset | |
11265 | + ent->plt.offset); | |
11266 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11267 | rela.r_addend = ent->addend; | |
11268 | ||
11269 | loc = htab->relplt->contents; | |
11270 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11271 | * sizeof (Elf64_External_Rela)); | |
11272 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11273 | } | |
5bd4f169 | 11274 | |
f5385ebf | 11275 | if (h->needs_copy) |
5bd4f169 | 11276 | { |
5bd4f169 | 11277 | Elf_Internal_Rela rela; |
947216bf | 11278 | bfd_byte *loc; |
5bd4f169 | 11279 | |
65f38f15 | 11280 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11281 | |
65f38f15 AM |
11282 | if (h->dynindx == -1 |
11283 | || (h->root.type != bfd_link_hash_defined | |
11284 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11285 | || htab->relbss == NULL) |
65f38f15 | 11286 | abort (); |
5bd4f169 AM |
11287 | |
11288 | rela.r_offset = (h->root.u.def.value | |
11289 | + h->root.u.def.section->output_section->vma | |
11290 | + h->root.u.def.section->output_offset); | |
11291 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11292 | rela.r_addend = 0; | |
4ce794b7 AM |
11293 | loc = htab->relbss->contents; |
11294 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11295 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11296 | } |
11297 | ||
5bd4f169 AM |
11298 | /* Mark some specially defined symbols as absolute. */ |
11299 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11300 | sym->st_shndx = SHN_ABS; | |
11301 | ||
b34976b6 | 11302 | return TRUE; |
5bd4f169 AM |
11303 | } |
11304 | ||
65f38f15 AM |
11305 | /* Used to decide how to sort relocs in an optimal manner for the |
11306 | dynamic linker, before writing them out. */ | |
11307 | ||
11308 | static enum elf_reloc_type_class | |
4ce794b7 | 11309 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11310 | { |
04c9666a | 11311 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11312 | |
4ce794b7 | 11313 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11314 | switch (r_type) |
65f38f15 AM |
11315 | { |
11316 | case R_PPC64_RELATIVE: | |
11317 | return reloc_class_relative; | |
11318 | case R_PPC64_JMP_SLOT: | |
11319 | return reloc_class_plt; | |
11320 | case R_PPC64_COPY: | |
11321 | return reloc_class_copy; | |
11322 | default: | |
11323 | return reloc_class_normal; | |
11324 | } | |
11325 | } | |
11326 | ||
5bd4f169 AM |
11327 | /* Finish up the dynamic sections. */ |
11328 | ||
b34976b6 | 11329 | static bfd_boolean |
4ce794b7 AM |
11330 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11331 | struct bfd_link_info *info) | |
5bd4f169 | 11332 | { |
65f38f15 AM |
11333 | struct ppc_link_hash_table *htab; |
11334 | bfd *dynobj; | |
5bd4f169 | 11335 | asection *sdyn; |
5bd4f169 | 11336 | |
65f38f15 AM |
11337 | htab = ppc_hash_table (info); |
11338 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11339 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11340 | ||
65f38f15 | 11341 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11342 | { |
5bd4f169 AM |
11343 | Elf64_External_Dyn *dyncon, *dynconend; |
11344 | ||
4ce794b7 | 11345 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11346 | abort (); |
5bd4f169 AM |
11347 | |
11348 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11349 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11350 | for (; dyncon < dynconend; dyncon++) |
11351 | { | |
11352 | Elf_Internal_Dyn dyn; | |
19397422 | 11353 | asection *s; |
5bd4f169 AM |
11354 | |
11355 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11356 | ||
11357 | switch (dyn.d_tag) | |
11358 | { | |
65f38f15 AM |
11359 | default: |
11360 | continue; | |
5bd4f169 | 11361 | |
5d1634d7 | 11362 | case DT_PPC64_GLINK: |
4ce794b7 | 11363 | s = htab->glink; |
6348e046 | 11364 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11365 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11366 | of glink rather than the first entry point, which is | |
11367 | what ld.so needs, and now have a bigger stub to | |
11368 | support automatic multiple TOCs. */ | |
11369 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11370 | break; |
11371 | ||
19397422 AM |
11372 | case DT_PPC64_OPD: |
11373 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11374 | if (s == NULL) |
11375 | continue; | |
11376 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11377 | break; |
11378 | ||
11379 | case DT_PPC64_OPDSZ: | |
11380 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11381 | if (s == NULL) |
11382 | continue; | |
eea6121a | 11383 | dyn.d_un.d_val = s->size; |
19397422 AM |
11384 | break; |
11385 | ||
65f38f15 | 11386 | case DT_PLTGOT: |
4ce794b7 | 11387 | s = htab->plt; |
6348e046 | 11388 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11389 | break; |
11390 | ||
11391 | case DT_JMPREL: | |
4ce794b7 | 11392 | s = htab->relplt; |
6348e046 | 11393 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11394 | break; |
5bd4f169 | 11395 | |
65f38f15 | 11396 | case DT_PLTRELSZ: |
eea6121a | 11397 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11398 | break; |
11399 | ||
11400 | case DT_RELASZ: | |
11401 | /* Don't count procedure linkage table relocs in the | |
11402 | overall reloc count. */ | |
4ce794b7 | 11403 | s = htab->relplt; |
6348e046 AM |
11404 | if (s == NULL) |
11405 | continue; | |
eea6121a | 11406 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11407 | break; |
11408 | ||
11409 | case DT_RELA: | |
11410 | /* We may not be using the standard ELF linker script. | |
11411 | If .rela.plt is the first .rela section, we adjust | |
11412 | DT_RELA to not include it. */ | |
4ce794b7 | 11413 | s = htab->relplt; |
6348e046 AM |
11414 | if (s == NULL) |
11415 | continue; | |
11416 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11417 | continue; | |
eea6121a | 11418 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11419 | break; |
5bd4f169 | 11420 | } |
5bd4f169 | 11421 | |
65f38f15 | 11422 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11423 | } |
5bd4f169 AM |
11424 | } |
11425 | ||
eea6121a | 11426 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11427 | { |
11428 | /* Fill in the first entry in the global offset table. | |
11429 | We use it to hold the link-time TOCbase. */ | |
11430 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11431 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11432 | htab->got->contents); |
5d1634d7 AM |
11433 | |
11434 | /* Set .got entry size. */ | |
4ce794b7 | 11435 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11436 | } |
11437 | ||
eea6121a | 11438 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11439 | { |
11440 | /* Set .plt entry size. */ | |
4ce794b7 | 11441 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11442 | = PLT_ENTRY_SIZE; |
11443 | } | |
11444 | ||
e717da7e | 11445 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11446 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11447 | bfd. */ | |
e717da7e AM |
11448 | while ((dynobj = dynobj->link_next) != NULL) |
11449 | { | |
11450 | asection *s; | |
7b53ace3 | 11451 | |
ee75fd95 | 11452 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11453 | continue; |
11454 | ||
e717da7e AM |
11455 | s = ppc64_elf_tdata (dynobj)->got; |
11456 | if (s != NULL | |
eea6121a | 11457 | && s->size != 0 |
e717da7e AM |
11458 | && s->output_section != bfd_abs_section_ptr |
11459 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11460 | s->contents, s->output_offset, | |
eea6121a | 11461 | s->size)) |
e717da7e AM |
11462 | return FALSE; |
11463 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11464 | if (s != NULL | |
eea6121a | 11465 | && s->size != 0 |
e717da7e AM |
11466 | && s->output_section != bfd_abs_section_ptr |
11467 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11468 | s->contents, s->output_offset, | |
eea6121a | 11469 | s->size)) |
e717da7e AM |
11470 | return FALSE; |
11471 | } | |
f6c52c13 | 11472 | |
b34976b6 | 11473 | return TRUE; |
5bd4f169 AM |
11474 | } |
11475 | ||
5bd4f169 | 11476 | #include "elf64-target.h" |