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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
74f0fb50 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
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 | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 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 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
56 | static bfd_vma opd_entry_value |
57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 58 | |
ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
62 | #define TARGET_BIG_NAME "elf64-powerpc" | |
63 | #define ELF_ARCH bfd_arch_powerpc | |
64 | #define ELF_MACHINE_CODE EM_PPC64 | |
65 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 66 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
67 | #define elf_info_to_howto ppc64_elf_info_to_howto |
68 | ||
69 | #define elf_backend_want_got_sym 0 | |
70 | #define elf_backend_want_plt_sym 0 | |
71 | #define elf_backend_plt_alignment 3 | |
72 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 73 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
74 | #define elf_backend_can_gc_sections 1 |
75 | #define elf_backend_can_refcount 1 | |
76 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 77 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 78 | |
e717da7e | 79 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 80 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
157090f7 | 81 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ad8e1ba5 AM |
82 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
83 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
84 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
85 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 86 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
87 | |
88 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
89 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
90 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 91 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
92 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
93 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 94 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d | 95 | #define elf_backend_check_directives ppc64_elf_check_directives |
97fed1c9 | 96 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 97 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 98 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 99 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 100 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
101 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
102 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
103 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
104 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
105 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
106 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 107 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 108 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
109 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
110 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
111 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
112 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 113 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 114 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 115 | |
5bd4f169 AM |
116 | /* The name of the dynamic interpreter. This is put in the .interp |
117 | section. */ | |
118 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
119 | ||
120 | /* The size in bytes of an entry in the procedure linkage table. */ | |
121 | #define PLT_ENTRY_SIZE 24 | |
122 | ||
123 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 124 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
125 | |
126 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
127 | #define TOC_BASE_OFF 0x8000 |
128 | ||
129 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
130 | #define TP_OFFSET 0x7000 | |
131 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 132 | |
ad8e1ba5 AM |
133 | /* .plt call stub instructions. The normal stub is like this, but |
134 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 135 | insert an addi to adjust r12. */ |
ad8e1ba5 | 136 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
137 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
138 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
139 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 140 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 141 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
142 | /* ld %r11,xxx+16@l(%r12) */ |
143 | #define BCTR 0x4e800420 /* bctr */ | |
144 | ||
5d1634d7 | 145 | |
ee4bf8d2 | 146 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 147 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
148 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
149 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
150 | ||
ac2df442 AM |
151 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
152 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
153 | ||
ad8e1ba5 AM |
154 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
155 | ||
ee4bf8d2 | 156 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 157 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
158 | /* 0: */ |
159 | /* .quad plt0-1f */ | |
160 | /* __glink: */ | |
161 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
162 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
163 | /* 1: */ | |
164 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
165 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
166 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
167 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
168 | /* ld %11,0(%12) */ | |
169 | /* ld %2,8(%12) */ | |
170 | /* mtctr %11 */ | |
171 | /* ld %11,16(%12) */ | |
172 | /* bctr */ | |
5d1634d7 AM |
173 | |
174 | /* Pad with this. */ | |
175 | #define NOP 0x60000000 | |
176 | ||
721956f4 AM |
177 | /* Some other nops. */ |
178 | #define CROR_151515 0x4def7b82 | |
179 | #define CROR_313131 0x4ffffb82 | |
180 | ||
cedb70c5 | 181 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
182 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
183 | #define B_DOT 0x48000000 /* b . */ | |
184 | ||
185 | /* After that, we need two instructions to load the index, followed by | |
186 | a branch. */ | |
187 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 188 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 189 | |
deb0e272 AM |
190 | /* Instructions used by the save and restore reg functions. */ |
191 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
192 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
193 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
194 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
195 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
196 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
197 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
198 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
199 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
200 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
201 | #define BLR 0x4e800020 /* blr */ |
202 | ||
41bd81ab AM |
203 | /* Since .opd is an array of descriptors and each entry will end up |
204 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
205 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 206 | relocate .opd without reloc entries. */ |
41bd81ab AM |
207 | #ifndef NO_OPD_RELOCS |
208 | #define NO_OPD_RELOCS 0 | |
209 | #endif | |
5bd4f169 | 210 | \f |
f5e87a1d | 211 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 212 | |
5bd4f169 | 213 | /* Relocation HOWTO's. */ |
04c9666a | 214 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
215 | |
216 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
217 | /* This reloc does nothing. */ | |
218 | HOWTO (R_PPC64_NONE, /* type */ | |
219 | 0, /* rightshift */ | |
411e1bfb AM |
220 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
221 | 32, /* bitsize */ | |
b34976b6 | 222 | FALSE, /* pc_relative */ |
5bd4f169 | 223 | 0, /* bitpos */ |
f5e87a1d | 224 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
225 | bfd_elf_generic_reloc, /* special_function */ |
226 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 227 | FALSE, /* partial_inplace */ |
d006db6c | 228 | 0, /* src_mask */ |
5bd4f169 | 229 | 0, /* dst_mask */ |
b34976b6 | 230 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
231 | |
232 | /* A standard 32 bit relocation. */ | |
233 | HOWTO (R_PPC64_ADDR32, /* type */ | |
234 | 0, /* rightshift */ | |
235 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
236 | 32, /* bitsize */ | |
b34976b6 | 237 | FALSE, /* pc_relative */ |
5bd4f169 AM |
238 | 0, /* bitpos */ |
239 | complain_overflow_bitfield, /* complain_on_overflow */ | |
240 | bfd_elf_generic_reloc, /* special_function */ | |
241 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 242 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
243 | 0, /* src_mask */ |
244 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 245 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
246 | |
247 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
248 | FIXME: we don't check that, we just clear them. */ | |
249 | HOWTO (R_PPC64_ADDR24, /* type */ | |
250 | 0, /* rightshift */ | |
251 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
252 | 26, /* bitsize */ | |
b34976b6 | 253 | FALSE, /* pc_relative */ |
5bd4f169 AM |
254 | 0, /* bitpos */ |
255 | complain_overflow_bitfield, /* complain_on_overflow */ | |
256 | bfd_elf_generic_reloc, /* special_function */ | |
257 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 258 | FALSE, /* partial_inplace */ |
d006db6c | 259 | 0, /* src_mask */ |
f5e87a1d | 260 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 261 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
262 | |
263 | /* A standard 16 bit relocation. */ | |
264 | HOWTO (R_PPC64_ADDR16, /* type */ | |
265 | 0, /* rightshift */ | |
266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
267 | 16, /* bitsize */ | |
b34976b6 | 268 | FALSE, /* pc_relative */ |
5bd4f169 AM |
269 | 0, /* bitpos */ |
270 | complain_overflow_bitfield, /* complain_on_overflow */ | |
271 | bfd_elf_generic_reloc, /* special_function */ | |
272 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 273 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
274 | 0, /* src_mask */ |
275 | 0xffff, /* dst_mask */ | |
b34976b6 | 276 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
277 | |
278 | /* A 16 bit relocation without overflow. */ | |
279 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
280 | 0, /* rightshift */ | |
281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
282 | 16, /* bitsize */ | |
b34976b6 | 283 | FALSE, /* pc_relative */ |
5bd4f169 AM |
284 | 0, /* bitpos */ |
285 | complain_overflow_dont,/* complain_on_overflow */ | |
286 | bfd_elf_generic_reloc, /* special_function */ | |
287 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 288 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
289 | 0, /* src_mask */ |
290 | 0xffff, /* dst_mask */ | |
b34976b6 | 291 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
292 | |
293 | /* Bits 16-31 of an address. */ | |
294 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
295 | 16, /* rightshift */ | |
296 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
297 | 16, /* bitsize */ | |
b34976b6 | 298 | FALSE, /* pc_relative */ |
5bd4f169 AM |
299 | 0, /* bitpos */ |
300 | complain_overflow_dont, /* complain_on_overflow */ | |
301 | bfd_elf_generic_reloc, /* special_function */ | |
302 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 303 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
304 | 0, /* src_mask */ |
305 | 0xffff, /* dst_mask */ | |
b34976b6 | 306 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
307 | |
308 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
309 | bits, treated as a signed number, is negative. */ | |
310 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
311 | 16, /* rightshift */ | |
312 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 16, /* bitsize */ | |
b34976b6 | 314 | FALSE, /* pc_relative */ |
5bd4f169 AM |
315 | 0, /* bitpos */ |
316 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 317 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 318 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 319 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
320 | 0, /* src_mask */ |
321 | 0xffff, /* dst_mask */ | |
b34976b6 | 322 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
323 | |
324 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
325 | FIXME: we don't check that, we just clear them. */ | |
326 | HOWTO (R_PPC64_ADDR14, /* type */ | |
327 | 0, /* rightshift */ | |
328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
329 | 16, /* bitsize */ | |
b34976b6 | 330 | FALSE, /* pc_relative */ |
5bd4f169 AM |
331 | 0, /* bitpos */ |
332 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 333 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 334 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 335 | FALSE, /* partial_inplace */ |
d006db6c | 336 | 0, /* src_mask */ |
f5e87a1d | 337 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 338 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
339 | |
340 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
341 | indicate that the branch is expected to be taken. The lower two | |
342 | bits must be zero. */ | |
343 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
344 | 0, /* rightshift */ | |
345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
346 | 16, /* bitsize */ | |
b34976b6 | 347 | FALSE, /* pc_relative */ |
5bd4f169 AM |
348 | 0, /* bitpos */ |
349 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 350 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 351 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 352 | FALSE, /* partial_inplace */ |
d006db6c | 353 | 0, /* src_mask */ |
f5e87a1d | 354 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 355 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
356 | |
357 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
358 | indicate that the branch is not expected to be taken. The lower | |
359 | two bits must be zero. */ | |
360 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
361 | 0, /* rightshift */ | |
362 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
363 | 16, /* bitsize */ | |
b34976b6 | 364 | FALSE, /* pc_relative */ |
5bd4f169 AM |
365 | 0, /* bitpos */ |
366 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 367 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 368 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 369 | FALSE, /* partial_inplace */ |
d006db6c | 370 | 0, /* src_mask */ |
f5e87a1d | 371 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 372 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
373 | |
374 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
375 | HOWTO (R_PPC64_REL24, /* type */ | |
376 | 0, /* rightshift */ | |
377 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
378 | 26, /* bitsize */ | |
b34976b6 | 379 | TRUE, /* pc_relative */ |
5bd4f169 AM |
380 | 0, /* bitpos */ |
381 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 382 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 383 | "R_PPC64_REL24", /* name */ |
b34976b6 | 384 | FALSE, /* partial_inplace */ |
d006db6c | 385 | 0, /* src_mask */ |
f5e87a1d | 386 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 387 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
388 | |
389 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
390 | HOWTO (R_PPC64_REL14, /* type */ | |
391 | 0, /* rightshift */ | |
392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
393 | 16, /* bitsize */ | |
b34976b6 | 394 | TRUE, /* pc_relative */ |
5bd4f169 AM |
395 | 0, /* bitpos */ |
396 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 397 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 398 | "R_PPC64_REL14", /* name */ |
b34976b6 | 399 | FALSE, /* partial_inplace */ |
d006db6c | 400 | 0, /* src_mask */ |
f5e87a1d | 401 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 402 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
403 | |
404 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
405 | the branch is expected to be taken. The lower two bits must be | |
406 | zero. */ | |
407 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
408 | 0, /* rightshift */ | |
409 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
410 | 16, /* bitsize */ | |
b34976b6 | 411 | TRUE, /* pc_relative */ |
5bd4f169 AM |
412 | 0, /* bitpos */ |
413 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 414 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 415 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 416 | FALSE, /* partial_inplace */ |
d006db6c | 417 | 0, /* src_mask */ |
f5e87a1d | 418 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 419 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
420 | |
421 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
422 | the branch is not expected to be taken. The lower two bits must | |
423 | be zero. */ | |
424 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
425 | 0, /* rightshift */ | |
426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
427 | 16, /* bitsize */ | |
b34976b6 | 428 | TRUE, /* pc_relative */ |
5bd4f169 AM |
429 | 0, /* bitpos */ |
430 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 431 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 432 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 433 | FALSE, /* partial_inplace */ |
d006db6c | 434 | 0, /* src_mask */ |
f5e87a1d | 435 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 436 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
437 | |
438 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
439 | symbol. */ | |
440 | HOWTO (R_PPC64_GOT16, /* type */ | |
441 | 0, /* rightshift */ | |
442 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
443 | 16, /* bitsize */ | |
b34976b6 | 444 | FALSE, /* pc_relative */ |
5bd4f169 AM |
445 | 0, /* bitpos */ |
446 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 447 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 448 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 449 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
450 | 0, /* src_mask */ |
451 | 0xffff, /* dst_mask */ | |
b34976b6 | 452 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
453 | |
454 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
455 | the symbol. */ | |
456 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
457 | 0, /* rightshift */ | |
458 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
459 | 16, /* bitsize */ | |
b34976b6 | 460 | FALSE, /* pc_relative */ |
5bd4f169 AM |
461 | 0, /* bitpos */ |
462 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 463 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 464 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 465 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
466 | 0, /* src_mask */ |
467 | 0xffff, /* dst_mask */ | |
b34976b6 | 468 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
469 | |
470 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
471 | the symbol. */ | |
472 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
473 | 16, /* rightshift */ | |
474 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
475 | 16, /* bitsize */ | |
b34976b6 | 476 | FALSE, /* pc_relative */ |
5bd4f169 AM |
477 | 0, /* bitpos */ |
478 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 479 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 480 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 481 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
482 | 0, /* src_mask */ |
483 | 0xffff, /* dst_mask */ | |
b34976b6 | 484 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
485 | |
486 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
487 | the symbol. */ | |
488 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
489 | 16, /* rightshift */ | |
490 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
491 | 16, /* bitsize */ | |
b34976b6 | 492 | FALSE, /* pc_relative */ |
5bd4f169 AM |
493 | 0, /* bitpos */ |
494 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 495 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 496 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 497 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
498 | 0, /* src_mask */ |
499 | 0xffff, /* dst_mask */ | |
b34976b6 | 500 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
501 | |
502 | /* This is used only by the dynamic linker. The symbol should exist | |
503 | both in the object being run and in some shared library. The | |
504 | dynamic linker copies the data addressed by the symbol from the | |
505 | shared library into the object, because the object being | |
506 | run has to have the data at some particular address. */ | |
507 | HOWTO (R_PPC64_COPY, /* type */ | |
508 | 0, /* rightshift */ | |
f5e87a1d AM |
509 | 0, /* this one is variable size */ |
510 | 0, /* bitsize */ | |
b34976b6 | 511 | FALSE, /* pc_relative */ |
5bd4f169 | 512 | 0, /* bitpos */ |
f5e87a1d AM |
513 | complain_overflow_dont, /* complain_on_overflow */ |
514 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 515 | "R_PPC64_COPY", /* name */ |
b34976b6 | 516 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
517 | 0, /* src_mask */ |
518 | 0, /* dst_mask */ | |
b34976b6 | 519 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
520 | |
521 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
522 | entries. */ | |
523 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
524 | 0, /* rightshift */ | |
525 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
526 | 64, /* bitsize */ | |
b34976b6 | 527 | FALSE, /* pc_relative */ |
5bd4f169 AM |
528 | 0, /* bitpos */ |
529 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 530 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 531 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 532 | FALSE, /* partial_inplace */ |
5bd4f169 | 533 | 0, /* src_mask */ |
f5e87a1d | 534 | ONES (64), /* dst_mask */ |
b34976b6 | 535 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
536 | |
537 | /* Created by the link editor. Marks a procedure linkage table | |
538 | entry for a symbol. */ | |
539 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
540 | 0, /* rightshift */ | |
541 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 0, /* bitsize */ | |
b34976b6 | 543 | FALSE, /* pc_relative */ |
5bd4f169 AM |
544 | 0, /* bitpos */ |
545 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 546 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 547 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 548 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
549 | 0, /* src_mask */ |
550 | 0, /* dst_mask */ | |
b34976b6 | 551 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
552 | |
553 | /* Used only by the dynamic linker. When the object is run, this | |
554 | doubleword64 is set to the load address of the object, plus the | |
555 | addend. */ | |
556 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
557 | 0, /* rightshift */ | |
558 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
559 | 64, /* bitsize */ | |
b34976b6 | 560 | FALSE, /* pc_relative */ |
5bd4f169 AM |
561 | 0, /* bitpos */ |
562 | complain_overflow_dont, /* complain_on_overflow */ | |
563 | bfd_elf_generic_reloc, /* special_function */ | |
564 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 565 | FALSE, /* partial_inplace */ |
5bd4f169 | 566 | 0, /* src_mask */ |
f5e87a1d | 567 | ONES (64), /* dst_mask */ |
b34976b6 | 568 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
569 | |
570 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
571 | HOWTO (R_PPC64_UADDR32, /* type */ | |
572 | 0, /* rightshift */ | |
573 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
574 | 32, /* bitsize */ | |
b34976b6 | 575 | FALSE, /* pc_relative */ |
5bd4f169 AM |
576 | 0, /* bitpos */ |
577 | complain_overflow_bitfield, /* complain_on_overflow */ | |
578 | bfd_elf_generic_reloc, /* special_function */ | |
579 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 580 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
581 | 0, /* src_mask */ |
582 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 583 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
584 | |
585 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
586 | HOWTO (R_PPC64_UADDR16, /* type */ | |
587 | 0, /* rightshift */ | |
588 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
589 | 16, /* bitsize */ | |
b34976b6 | 590 | FALSE, /* pc_relative */ |
5bd4f169 AM |
591 | 0, /* bitpos */ |
592 | complain_overflow_bitfield, /* complain_on_overflow */ | |
593 | bfd_elf_generic_reloc, /* special_function */ | |
594 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 595 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
596 | 0, /* src_mask */ |
597 | 0xffff, /* dst_mask */ | |
b34976b6 | 598 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
599 | |
600 | /* 32-bit PC relative. */ | |
601 | HOWTO (R_PPC64_REL32, /* type */ | |
602 | 0, /* rightshift */ | |
603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
604 | 32, /* bitsize */ | |
b34976b6 | 605 | TRUE, /* pc_relative */ |
5bd4f169 | 606 | 0, /* bitpos */ |
cedb70c5 | 607 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
608 | complain_overflow_signed, /* complain_on_overflow */ |
609 | bfd_elf_generic_reloc, /* special_function */ | |
610 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 611 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
612 | 0, /* src_mask */ |
613 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 614 | TRUE), /* pcrel_offset */ |
5bd4f169 | 615 | |
10ed1bba | 616 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
617 | HOWTO (R_PPC64_PLT32, /* type */ |
618 | 0, /* rightshift */ | |
619 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
620 | 32, /* bitsize */ | |
b34976b6 | 621 | FALSE, /* pc_relative */ |
5bd4f169 AM |
622 | 0, /* bitpos */ |
623 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 624 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 625 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 626 | FALSE, /* partial_inplace */ |
5bd4f169 | 627 | 0, /* src_mask */ |
f5e87a1d | 628 | 0xffffffff, /* dst_mask */ |
b34976b6 | 629 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
630 | |
631 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
632 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
633 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
634 | 0, /* rightshift */ | |
635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 32, /* bitsize */ | |
b34976b6 | 637 | TRUE, /* pc_relative */ |
5bd4f169 AM |
638 | 0, /* bitpos */ |
639 | complain_overflow_signed, /* complain_on_overflow */ | |
640 | bfd_elf_generic_reloc, /* special_function */ | |
641 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 642 | FALSE, /* partial_inplace */ |
5bd4f169 | 643 | 0, /* src_mask */ |
f5e87a1d | 644 | 0xffffffff, /* dst_mask */ |
b34976b6 | 645 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
646 | |
647 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
648 | the symbol. */ | |
649 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
650 | 0, /* rightshift */ | |
651 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
652 | 16, /* bitsize */ | |
b34976b6 | 653 | FALSE, /* pc_relative */ |
5bd4f169 AM |
654 | 0, /* bitpos */ |
655 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 656 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 657 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 658 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
659 | 0, /* src_mask */ |
660 | 0xffff, /* dst_mask */ | |
b34976b6 | 661 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
662 | |
663 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
664 | the symbol. */ | |
665 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
666 | 16, /* rightshift */ | |
667 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
668 | 16, /* bitsize */ | |
b34976b6 | 669 | FALSE, /* pc_relative */ |
5bd4f169 AM |
670 | 0, /* bitpos */ |
671 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 672 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 673 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 674 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
675 | 0, /* src_mask */ |
676 | 0xffff, /* dst_mask */ | |
b34976b6 | 677 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
678 | |
679 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
680 | the symbol. */ | |
681 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
682 | 16, /* rightshift */ | |
683 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
684 | 16, /* bitsize */ | |
b34976b6 | 685 | FALSE, /* pc_relative */ |
5bd4f169 AM |
686 | 0, /* bitpos */ |
687 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 688 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 689 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 690 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
691 | 0, /* src_mask */ |
692 | 0xffff, /* dst_mask */ | |
b34976b6 | 693 | FALSE), /* pcrel_offset */ |
5bd4f169 | 694 | |
c061c2d8 | 695 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
696 | HOWTO (R_PPC64_SECTOFF, /* type */ |
697 | 0, /* rightshift */ | |
c061c2d8 AM |
698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
699 | 16, /* bitsize */ | |
b34976b6 | 700 | FALSE, /* pc_relative */ |
5bd4f169 AM |
701 | 0, /* bitpos */ |
702 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 703 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 704 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 705 | FALSE, /* partial_inplace */ |
5bd4f169 | 706 | 0, /* src_mask */ |
c061c2d8 | 707 | 0xffff, /* dst_mask */ |
b34976b6 | 708 | FALSE), /* pcrel_offset */ |
5bd4f169 | 709 | |
c061c2d8 | 710 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
711 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
712 | 0, /* rightshift */ | |
713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
714 | 16, /* bitsize */ | |
b34976b6 | 715 | FALSE, /* pc_relative */ |
5bd4f169 AM |
716 | 0, /* bitpos */ |
717 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 718 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 719 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 720 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
721 | 0, /* src_mask */ |
722 | 0xffff, /* dst_mask */ | |
b34976b6 | 723 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
724 | |
725 | /* 16-bit upper half section relative relocation. */ | |
726 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
727 | 16, /* rightshift */ | |
728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
729 | 16, /* bitsize */ | |
b34976b6 | 730 | FALSE, /* pc_relative */ |
5bd4f169 AM |
731 | 0, /* bitpos */ |
732 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 733 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 734 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 735 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
736 | 0, /* src_mask */ |
737 | 0xffff, /* dst_mask */ | |
b34976b6 | 738 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
739 | |
740 | /* 16-bit upper half adjusted section relative relocation. */ | |
741 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
742 | 16, /* rightshift */ | |
743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
744 | 16, /* bitsize */ | |
b34976b6 | 745 | FALSE, /* pc_relative */ |
5bd4f169 AM |
746 | 0, /* bitpos */ |
747 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 748 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 749 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 750 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
751 | 0, /* src_mask */ |
752 | 0xffff, /* dst_mask */ | |
b34976b6 | 753 | FALSE), /* pcrel_offset */ |
5bd4f169 | 754 | |
04c9666a AM |
755 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
756 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
757 | 2, /* rightshift */ |
758 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
759 | 30, /* bitsize */ | |
b34976b6 | 760 | TRUE, /* pc_relative */ |
5bd4f169 AM |
761 | 0, /* bitpos */ |
762 | complain_overflow_dont, /* complain_on_overflow */ | |
763 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 764 | "R_PPC64_REL30", /* name */ |
b34976b6 | 765 | FALSE, /* partial_inplace */ |
d006db6c | 766 | 0, /* src_mask */ |
5bd4f169 | 767 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 768 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
769 | |
770 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
771 | ||
772 | /* A standard 64-bit relocation. */ | |
773 | HOWTO (R_PPC64_ADDR64, /* type */ | |
774 | 0, /* rightshift */ | |
775 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
776 | 64, /* bitsize */ | |
b34976b6 | 777 | FALSE, /* pc_relative */ |
5bd4f169 AM |
778 | 0, /* bitpos */ |
779 | complain_overflow_dont, /* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
781 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 782 | FALSE, /* partial_inplace */ |
5bd4f169 | 783 | 0, /* src_mask */ |
f5e87a1d | 784 | ONES (64), /* dst_mask */ |
b34976b6 | 785 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
786 | |
787 | /* The bits 32-47 of an address. */ | |
788 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
789 | 32, /* rightshift */ | |
790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
791 | 16, /* bitsize */ | |
b34976b6 | 792 | FALSE, /* pc_relative */ |
5bd4f169 AM |
793 | 0, /* bitpos */ |
794 | complain_overflow_dont, /* complain_on_overflow */ | |
795 | bfd_elf_generic_reloc, /* special_function */ | |
796 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 797 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
798 | 0, /* src_mask */ |
799 | 0xffff, /* dst_mask */ | |
b34976b6 | 800 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
801 | |
802 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
803 | 16 bits, treated as a signed number, is negative. */ | |
804 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
805 | 32, /* rightshift */ | |
806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
807 | 16, /* bitsize */ | |
b34976b6 | 808 | FALSE, /* pc_relative */ |
5bd4f169 AM |
809 | 0, /* bitpos */ |
810 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 811 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 812 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 813 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
814 | 0, /* src_mask */ |
815 | 0xffff, /* dst_mask */ | |
b34976b6 | 816 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
817 | |
818 | /* The bits 48-63 of an address. */ | |
819 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
820 | 48, /* rightshift */ | |
821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
822 | 16, /* bitsize */ | |
b34976b6 | 823 | FALSE, /* pc_relative */ |
5bd4f169 AM |
824 | 0, /* bitpos */ |
825 | complain_overflow_dont, /* complain_on_overflow */ | |
826 | bfd_elf_generic_reloc, /* special_function */ | |
827 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 828 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
829 | 0, /* src_mask */ |
830 | 0xffff, /* dst_mask */ | |
b34976b6 | 831 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
832 | |
833 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
834 | 16 bits, treated as a signed number, is negative. */ | |
835 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
836 | 48, /* rightshift */ | |
837 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
838 | 16, /* bitsize */ | |
b34976b6 | 839 | FALSE, /* pc_relative */ |
5bd4f169 AM |
840 | 0, /* bitpos */ |
841 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 842 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 843 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 844 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
845 | 0, /* src_mask */ |
846 | 0xffff, /* dst_mask */ | |
b34976b6 | 847 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
848 | |
849 | /* Like ADDR64, but may be unaligned. */ | |
850 | HOWTO (R_PPC64_UADDR64, /* type */ | |
851 | 0, /* rightshift */ | |
852 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
853 | 64, /* bitsize */ | |
b34976b6 | 854 | FALSE, /* pc_relative */ |
5bd4f169 AM |
855 | 0, /* bitpos */ |
856 | complain_overflow_dont, /* complain_on_overflow */ | |
857 | bfd_elf_generic_reloc, /* special_function */ | |
858 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 859 | FALSE, /* partial_inplace */ |
5bd4f169 | 860 | 0, /* src_mask */ |
f5e87a1d | 861 | ONES (64), /* dst_mask */ |
b34976b6 | 862 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
863 | |
864 | /* 64-bit relative relocation. */ | |
865 | HOWTO (R_PPC64_REL64, /* type */ | |
866 | 0, /* rightshift */ | |
867 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
868 | 64, /* bitsize */ | |
b34976b6 | 869 | TRUE, /* pc_relative */ |
5bd4f169 AM |
870 | 0, /* bitpos */ |
871 | complain_overflow_dont, /* complain_on_overflow */ | |
872 | bfd_elf_generic_reloc, /* special_function */ | |
873 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 874 | FALSE, /* partial_inplace */ |
5bd4f169 | 875 | 0, /* src_mask */ |
f5e87a1d | 876 | ONES (64), /* dst_mask */ |
b34976b6 | 877 | TRUE), /* pcrel_offset */ |
5bd4f169 | 878 | |
cedb70c5 | 879 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
880 | HOWTO (R_PPC64_PLT64, /* type */ |
881 | 0, /* rightshift */ | |
882 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
883 | 64, /* bitsize */ | |
b34976b6 | 884 | FALSE, /* pc_relative */ |
5bd4f169 AM |
885 | 0, /* bitpos */ |
886 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 887 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 888 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 889 | FALSE, /* partial_inplace */ |
5bd4f169 | 890 | 0, /* src_mask */ |
f5e87a1d | 891 | ONES (64), /* dst_mask */ |
b34976b6 | 892 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
893 | |
894 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
895 | table. */ | |
896 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
897 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
898 | 0, /* rightshift */ | |
899 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
900 | 64, /* bitsize */ | |
b34976b6 | 901 | TRUE, /* pc_relative */ |
5bd4f169 AM |
902 | 0, /* bitpos */ |
903 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 904 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 905 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 906 | FALSE, /* partial_inplace */ |
5bd4f169 | 907 | 0, /* src_mask */ |
f5e87a1d | 908 | ONES (64), /* dst_mask */ |
b34976b6 | 909 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
910 | |
911 | /* 16 bit TOC-relative relocation. */ | |
912 | ||
913 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
914 | HOWTO (R_PPC64_TOC16, /* type */ | |
915 | 0, /* rightshift */ | |
916 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 16, /* bitsize */ | |
b34976b6 | 918 | FALSE, /* pc_relative */ |
5bd4f169 AM |
919 | 0, /* bitpos */ |
920 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 921 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 922 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 923 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
924 | 0, /* src_mask */ |
925 | 0xffff, /* dst_mask */ | |
b34976b6 | 926 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
927 | |
928 | /* 16 bit TOC-relative relocation without overflow. */ | |
929 | ||
930 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
931 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
932 | 0, /* rightshift */ | |
933 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
934 | 16, /* bitsize */ | |
b34976b6 | 935 | FALSE, /* pc_relative */ |
5bd4f169 AM |
936 | 0, /* bitpos */ |
937 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 938 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 939 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 940 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
941 | 0, /* src_mask */ |
942 | 0xffff, /* dst_mask */ | |
b34976b6 | 943 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
944 | |
945 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
946 | ||
947 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
948 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
949 | 16, /* rightshift */ | |
950 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
951 | 16, /* bitsize */ | |
b34976b6 | 952 | FALSE, /* pc_relative */ |
5bd4f169 AM |
953 | 0, /* bitpos */ |
954 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 955 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 956 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 957 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
958 | 0, /* src_mask */ |
959 | 0xffff, /* dst_mask */ | |
b34976b6 | 960 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
961 | |
962 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
963 | contents of the low 16 bits, treated as a signed number, is | |
964 | negative. */ | |
965 | ||
966 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
967 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
968 | 16, /* rightshift */ | |
969 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
970 | 16, /* bitsize */ | |
b34976b6 | 971 | FALSE, /* pc_relative */ |
5bd4f169 AM |
972 | 0, /* bitpos */ |
973 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 974 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 975 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 976 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
977 | 0, /* src_mask */ |
978 | 0xffff, /* dst_mask */ | |
b34976b6 | 979 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
980 | |
981 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
982 | ||
983 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
984 | HOWTO (R_PPC64_TOC, /* type */ | |
985 | 0, /* rightshift */ | |
986 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
987 | 64, /* bitsize */ | |
b34976b6 | 988 | FALSE, /* pc_relative */ |
5bd4f169 AM |
989 | 0, /* bitpos */ |
990 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 991 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 992 | "R_PPC64_TOC", /* name */ |
b34976b6 | 993 | FALSE, /* partial_inplace */ |
5bd4f169 | 994 | 0, /* src_mask */ |
f5e87a1d | 995 | ONES (64), /* dst_mask */ |
b34976b6 | 996 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
997 | |
998 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
999 | value to relocate may (!) refer to a PLT entry which the link | |
1000 | editor (a) may replace with the symbol value. If the link editor | |
1001 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1002 | entry and store the address to the new PLT entry in the GOT. | |
1003 | This permits lazy resolution of function symbols at run time. | |
1004 | The link editor may also skip all of this and just (c) emit a | |
1005 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1006 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1007 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1008 | 0, /* rightshift */ | |
1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 16, /* bitsize */ | |
b34976b6 | 1011 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1012 | 0, /* bitpos */ |
1013 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1014 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1015 | "R_PPC64_PLTGOT16", /* name */ |
1016 | FALSE, /* partial_inplace */ | |
1017 | 0, /* src_mask */ | |
1018 | 0xffff, /* dst_mask */ | |
1019 | FALSE), /* pcrel_offset */ | |
1020 | ||
1021 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1022 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1023 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1024 | 0, /* rightshift */ | |
1025 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1026 | 16, /* bitsize */ | |
1027 | FALSE, /* pc_relative */ | |
1028 | 0, /* bitpos */ | |
1029 | complain_overflow_dont, /* complain_on_overflow */ | |
1030 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1031 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1032 | FALSE, /* partial_inplace */ | |
1033 | 0, /* src_mask */ | |
1034 | 0xffff, /* dst_mask */ | |
1035 | FALSE), /* pcrel_offset */ | |
1036 | ||
1037 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1038 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1039 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1040 | 16, /* rightshift */ | |
1041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1042 | 16, /* bitsize */ | |
1043 | FALSE, /* pc_relative */ | |
1044 | 0, /* bitpos */ | |
1045 | complain_overflow_dont, /* complain_on_overflow */ | |
1046 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1047 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1048 | FALSE, /* partial_inplace */ | |
1049 | 0, /* src_mask */ | |
1050 | 0xffff, /* dst_mask */ | |
1051 | FALSE), /* pcrel_offset */ | |
1052 | ||
1053 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1054 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1055 | is negative. */ | |
1056 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1057 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1058 | 16, /* rightshift */ | |
1059 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1060 | 16, /* bitsize */ | |
1061 | FALSE, /* pc_relative */ | |
1062 | 0, /* bitpos */ | |
1063 | complain_overflow_dont,/* complain_on_overflow */ | |
1064 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1065 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1066 | FALSE, /* partial_inplace */ | |
1067 | 0, /* src_mask */ | |
1068 | 0xffff, /* dst_mask */ | |
1069 | FALSE), /* pcrel_offset */ | |
1070 | ||
1071 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1072 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1073 | 0, /* rightshift */ | |
1074 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1075 | 16, /* bitsize */ | |
1076 | FALSE, /* pc_relative */ | |
1077 | 0, /* bitpos */ | |
1078 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1079 | bfd_elf_generic_reloc, /* special_function */ | |
1080 | "R_PPC64_ADDR16_DS", /* name */ | |
1081 | FALSE, /* partial_inplace */ | |
1082 | 0, /* src_mask */ | |
1083 | 0xfffc, /* dst_mask */ | |
1084 | FALSE), /* pcrel_offset */ | |
1085 | ||
1086 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1087 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1088 | 0, /* rightshift */ | |
1089 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1090 | 16, /* bitsize */ | |
1091 | FALSE, /* pc_relative */ | |
1092 | 0, /* bitpos */ | |
1093 | complain_overflow_dont,/* complain_on_overflow */ | |
1094 | bfd_elf_generic_reloc, /* special_function */ | |
1095 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1096 | FALSE, /* partial_inplace */ | |
1097 | 0, /* src_mask */ | |
1098 | 0xfffc, /* dst_mask */ | |
1099 | FALSE), /* pcrel_offset */ | |
1100 | ||
1101 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1102 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1103 | 0, /* rightshift */ | |
1104 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 16, /* bitsize */ | |
1106 | FALSE, /* pc_relative */ | |
1107 | 0, /* bitpos */ | |
1108 | complain_overflow_signed, /* complain_on_overflow */ | |
1109 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1110 | "R_PPC64_GOT16_DS", /* name */ | |
1111 | FALSE, /* partial_inplace */ | |
1112 | 0, /* src_mask */ | |
1113 | 0xfffc, /* dst_mask */ | |
1114 | FALSE), /* pcrel_offset */ | |
1115 | ||
1116 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1117 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1118 | 0, /* rightshift */ | |
1119 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1120 | 16, /* bitsize */ | |
1121 | FALSE, /* pc_relative */ | |
1122 | 0, /* bitpos */ | |
1123 | complain_overflow_dont, /* complain_on_overflow */ | |
1124 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1125 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1126 | FALSE, /* partial_inplace */ | |
1127 | 0, /* src_mask */ | |
1128 | 0xfffc, /* dst_mask */ | |
1129 | FALSE), /* pcrel_offset */ | |
1130 | ||
1131 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1132 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1133 | 0, /* rightshift */ | |
1134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1135 | 16, /* bitsize */ | |
1136 | FALSE, /* pc_relative */ | |
1137 | 0, /* bitpos */ | |
1138 | complain_overflow_dont, /* complain_on_overflow */ | |
1139 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1140 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1141 | FALSE, /* partial_inplace */ | |
1142 | 0, /* src_mask */ | |
1143 | 0xfffc, /* dst_mask */ | |
1144 | FALSE), /* pcrel_offset */ | |
1145 | ||
1146 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1147 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1148 | 0, /* rightshift */ | |
1149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1150 | 16, /* bitsize */ | |
1151 | FALSE, /* pc_relative */ | |
1152 | 0, /* bitpos */ | |
1153 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1154 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1155 | "R_PPC64_SECTOFF_DS", /* name */ | |
1156 | FALSE, /* partial_inplace */ | |
1157 | 0, /* src_mask */ | |
1158 | 0xfffc, /* dst_mask */ | |
1159 | FALSE), /* pcrel_offset */ | |
1160 | ||
1161 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1162 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1163 | 0, /* rightshift */ | |
1164 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1165 | 16, /* bitsize */ | |
1166 | FALSE, /* pc_relative */ | |
1167 | 0, /* bitpos */ | |
1168 | complain_overflow_dont, /* complain_on_overflow */ | |
1169 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1170 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1171 | FALSE, /* partial_inplace */ | |
1172 | 0, /* src_mask */ | |
1173 | 0xfffc, /* dst_mask */ | |
1174 | FALSE), /* pcrel_offset */ | |
1175 | ||
1176 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1177 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1178 | 0, /* rightshift */ | |
1179 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1180 | 16, /* bitsize */ | |
1181 | FALSE, /* pc_relative */ | |
1182 | 0, /* bitpos */ | |
1183 | complain_overflow_signed, /* complain_on_overflow */ | |
1184 | ppc64_elf_toc_reloc, /* special_function */ | |
1185 | "R_PPC64_TOC16_DS", /* name */ | |
1186 | FALSE, /* partial_inplace */ | |
1187 | 0, /* src_mask */ | |
1188 | 0xfffc, /* dst_mask */ | |
1189 | FALSE), /* pcrel_offset */ | |
1190 | ||
1191 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1192 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1193 | 0, /* rightshift */ | |
1194 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1195 | 16, /* bitsize */ | |
1196 | FALSE, /* pc_relative */ | |
1197 | 0, /* bitpos */ | |
1198 | complain_overflow_dont, /* complain_on_overflow */ | |
1199 | ppc64_elf_toc_reloc, /* special_function */ | |
1200 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1201 | FALSE, /* partial_inplace */ | |
1202 | 0, /* src_mask */ | |
1203 | 0xfffc, /* dst_mask */ | |
1204 | FALSE), /* pcrel_offset */ | |
1205 | ||
1206 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1207 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1208 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1209 | 0, /* rightshift */ |
1210 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1211 | 16, /* bitsize */ | |
1212 | FALSE, /* pc_relative */ | |
1213 | 0, /* bitpos */ | |
1214 | complain_overflow_signed, /* complain_on_overflow */ | |
1215 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1216 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1217 | FALSE, /* partial_inplace */ | |
1218 | 0, /* src_mask */ | |
1219 | 0xfffc, /* dst_mask */ | |
1220 | FALSE), /* pcrel_offset */ | |
1221 | ||
1222 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1223 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1224 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1225 | 0, /* rightshift */ | |
1226 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1227 | 16, /* bitsize */ | |
1228 | FALSE, /* pc_relative */ | |
1229 | 0, /* bitpos */ | |
1230 | complain_overflow_dont, /* complain_on_overflow */ | |
1231 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1232 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1233 | FALSE, /* partial_inplace */ | |
1234 | 0, /* src_mask */ | |
1235 | 0xfffc, /* dst_mask */ | |
1236 | FALSE), /* pcrel_offset */ | |
1237 | ||
1238 | /* Marker reloc for TLS. */ | |
1239 | HOWTO (R_PPC64_TLS, | |
1240 | 0, /* rightshift */ | |
1241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1242 | 32, /* bitsize */ | |
1243 | FALSE, /* pc_relative */ | |
1244 | 0, /* bitpos */ | |
1245 | complain_overflow_dont, /* complain_on_overflow */ | |
1246 | bfd_elf_generic_reloc, /* special_function */ | |
1247 | "R_PPC64_TLS", /* name */ | |
1248 | FALSE, /* partial_inplace */ | |
1249 | 0, /* src_mask */ | |
1250 | 0, /* dst_mask */ | |
1251 | FALSE), /* pcrel_offset */ | |
1252 | ||
1253 | /* Computes the load module index of the load module that contains the | |
1254 | definition of its TLS sym. */ | |
1255 | HOWTO (R_PPC64_DTPMOD64, | |
1256 | 0, /* rightshift */ | |
1257 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1258 | 64, /* bitsize */ | |
1259 | FALSE, /* pc_relative */ | |
1260 | 0, /* bitpos */ | |
1261 | complain_overflow_dont, /* complain_on_overflow */ | |
1262 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1263 | "R_PPC64_DTPMOD64", /* name */ | |
1264 | FALSE, /* partial_inplace */ | |
1265 | 0, /* src_mask */ | |
1266 | ONES (64), /* dst_mask */ | |
1267 | FALSE), /* pcrel_offset */ | |
1268 | ||
1269 | /* Computes a dtv-relative displacement, the difference between the value | |
1270 | of sym+add and the base address of the thread-local storage block that | |
1271 | contains the definition of sym, minus 0x8000. */ | |
1272 | HOWTO (R_PPC64_DTPREL64, | |
1273 | 0, /* rightshift */ | |
1274 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1275 | 64, /* bitsize */ | |
1276 | FALSE, /* pc_relative */ | |
1277 | 0, /* bitpos */ | |
1278 | complain_overflow_dont, /* complain_on_overflow */ | |
1279 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1280 | "R_PPC64_DTPREL64", /* name */ | |
1281 | FALSE, /* partial_inplace */ | |
1282 | 0, /* src_mask */ | |
1283 | ONES (64), /* dst_mask */ | |
1284 | FALSE), /* pcrel_offset */ | |
1285 | ||
1286 | /* A 16 bit dtprel reloc. */ | |
1287 | HOWTO (R_PPC64_DTPREL16, | |
1288 | 0, /* rightshift */ | |
1289 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1290 | 16, /* bitsize */ | |
1291 | FALSE, /* pc_relative */ | |
1292 | 0, /* bitpos */ | |
1293 | complain_overflow_signed, /* complain_on_overflow */ | |
1294 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1295 | "R_PPC64_DTPREL16", /* name */ | |
1296 | FALSE, /* partial_inplace */ | |
1297 | 0, /* src_mask */ | |
1298 | 0xffff, /* dst_mask */ | |
1299 | FALSE), /* pcrel_offset */ | |
1300 | ||
1301 | /* Like DTPREL16, but no overflow. */ | |
1302 | HOWTO (R_PPC64_DTPREL16_LO, | |
1303 | 0, /* rightshift */ | |
1304 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1305 | 16, /* bitsize */ | |
1306 | FALSE, /* pc_relative */ | |
1307 | 0, /* bitpos */ | |
1308 | complain_overflow_dont, /* complain_on_overflow */ | |
1309 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1310 | "R_PPC64_DTPREL16_LO", /* name */ | |
1311 | FALSE, /* partial_inplace */ | |
1312 | 0, /* src_mask */ | |
1313 | 0xffff, /* dst_mask */ | |
1314 | FALSE), /* pcrel_offset */ | |
1315 | ||
1316 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1317 | HOWTO (R_PPC64_DTPREL16_HI, | |
1318 | 16, /* rightshift */ | |
1319 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1320 | 16, /* bitsize */ | |
1321 | FALSE, /* pc_relative */ | |
1322 | 0, /* bitpos */ | |
1323 | complain_overflow_dont, /* complain_on_overflow */ | |
1324 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1325 | "R_PPC64_DTPREL16_HI", /* name */ | |
1326 | FALSE, /* partial_inplace */ | |
1327 | 0, /* src_mask */ | |
1328 | 0xffff, /* dst_mask */ | |
1329 | FALSE), /* pcrel_offset */ | |
1330 | ||
1331 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1332 | HOWTO (R_PPC64_DTPREL16_HA, | |
1333 | 16, /* rightshift */ | |
1334 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1335 | 16, /* bitsize */ | |
1336 | FALSE, /* pc_relative */ | |
1337 | 0, /* bitpos */ | |
1338 | complain_overflow_dont, /* complain_on_overflow */ | |
1339 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1340 | "R_PPC64_DTPREL16_HA", /* name */ | |
1341 | FALSE, /* partial_inplace */ | |
1342 | 0, /* src_mask */ | |
1343 | 0xffff, /* dst_mask */ | |
1344 | FALSE), /* pcrel_offset */ | |
1345 | ||
1346 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1347 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1348 | 32, /* rightshift */ | |
1349 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 16, /* bitsize */ | |
1351 | FALSE, /* pc_relative */ | |
1352 | 0, /* bitpos */ | |
1353 | complain_overflow_dont, /* complain_on_overflow */ | |
1354 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1355 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1356 | FALSE, /* partial_inplace */ | |
1357 | 0, /* src_mask */ | |
1358 | 0xffff, /* dst_mask */ | |
1359 | FALSE), /* pcrel_offset */ | |
1360 | ||
1361 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1362 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1363 | 32, /* rightshift */ | |
1364 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1365 | 16, /* bitsize */ | |
1366 | FALSE, /* pc_relative */ | |
1367 | 0, /* bitpos */ | |
1368 | complain_overflow_dont, /* complain_on_overflow */ | |
1369 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1370 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1371 | FALSE, /* partial_inplace */ | |
1372 | 0, /* src_mask */ | |
1373 | 0xffff, /* dst_mask */ | |
1374 | FALSE), /* pcrel_offset */ | |
1375 | ||
1376 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1377 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1378 | 48, /* rightshift */ | |
1379 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1380 | 16, /* bitsize */ | |
1381 | FALSE, /* pc_relative */ | |
1382 | 0, /* bitpos */ | |
1383 | complain_overflow_dont, /* complain_on_overflow */ | |
1384 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1385 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1386 | FALSE, /* partial_inplace */ | |
1387 | 0, /* src_mask */ | |
1388 | 0xffff, /* dst_mask */ | |
1389 | FALSE), /* pcrel_offset */ | |
1390 | ||
1391 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1392 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1393 | 48, /* rightshift */ | |
1394 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1395 | 16, /* bitsize */ | |
1396 | FALSE, /* pc_relative */ | |
1397 | 0, /* bitpos */ | |
1398 | complain_overflow_dont, /* complain_on_overflow */ | |
1399 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1400 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1401 | FALSE, /* partial_inplace */ | |
1402 | 0, /* src_mask */ | |
1403 | 0xffff, /* dst_mask */ | |
1404 | FALSE), /* pcrel_offset */ | |
1405 | ||
1406 | /* Like DTPREL16, but for insns with a DS field. */ | |
1407 | HOWTO (R_PPC64_DTPREL16_DS, | |
1408 | 0, /* rightshift */ | |
1409 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1410 | 16, /* bitsize */ | |
1411 | FALSE, /* pc_relative */ | |
1412 | 0, /* bitpos */ | |
1413 | complain_overflow_signed, /* complain_on_overflow */ | |
1414 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1415 | "R_PPC64_DTPREL16_DS", /* name */ | |
1416 | FALSE, /* partial_inplace */ | |
1417 | 0, /* src_mask */ | |
1418 | 0xfffc, /* dst_mask */ | |
1419 | FALSE), /* pcrel_offset */ | |
1420 | ||
1421 | /* Like DTPREL16_DS, but no overflow. */ | |
1422 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1423 | 0, /* rightshift */ | |
1424 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1425 | 16, /* bitsize */ | |
1426 | FALSE, /* pc_relative */ | |
1427 | 0, /* bitpos */ | |
1428 | complain_overflow_dont, /* complain_on_overflow */ | |
1429 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1430 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1431 | FALSE, /* partial_inplace */ | |
1432 | 0, /* src_mask */ | |
1433 | 0xfffc, /* dst_mask */ | |
1434 | FALSE), /* pcrel_offset */ | |
1435 | ||
1436 | /* Computes a tp-relative displacement, the difference between the value of | |
1437 | sym+add and the value of the thread pointer (r13). */ | |
1438 | HOWTO (R_PPC64_TPREL64, | |
1439 | 0, /* rightshift */ | |
1440 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1441 | 64, /* bitsize */ | |
1442 | FALSE, /* pc_relative */ | |
1443 | 0, /* bitpos */ | |
1444 | complain_overflow_dont, /* complain_on_overflow */ | |
1445 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1446 | "R_PPC64_TPREL64", /* name */ | |
1447 | FALSE, /* partial_inplace */ | |
1448 | 0, /* src_mask */ | |
1449 | ONES (64), /* dst_mask */ | |
1450 | FALSE), /* pcrel_offset */ | |
1451 | ||
1452 | /* A 16 bit tprel reloc. */ | |
1453 | HOWTO (R_PPC64_TPREL16, | |
1454 | 0, /* rightshift */ | |
1455 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1456 | 16, /* bitsize */ | |
1457 | FALSE, /* pc_relative */ | |
1458 | 0, /* bitpos */ | |
1459 | complain_overflow_signed, /* complain_on_overflow */ | |
1460 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1461 | "R_PPC64_TPREL16", /* name */ | |
1462 | FALSE, /* partial_inplace */ | |
1463 | 0, /* src_mask */ | |
1464 | 0xffff, /* dst_mask */ | |
1465 | FALSE), /* pcrel_offset */ | |
1466 | ||
1467 | /* Like TPREL16, but no overflow. */ | |
1468 | HOWTO (R_PPC64_TPREL16_LO, | |
1469 | 0, /* rightshift */ | |
1470 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1471 | 16, /* bitsize */ | |
1472 | FALSE, /* pc_relative */ | |
1473 | 0, /* bitpos */ | |
1474 | complain_overflow_dont, /* complain_on_overflow */ | |
1475 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1476 | "R_PPC64_TPREL16_LO", /* name */ | |
1477 | FALSE, /* partial_inplace */ | |
1478 | 0, /* src_mask */ | |
1479 | 0xffff, /* dst_mask */ | |
1480 | FALSE), /* pcrel_offset */ | |
1481 | ||
1482 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1483 | HOWTO (R_PPC64_TPREL16_HI, | |
1484 | 16, /* rightshift */ | |
1485 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1486 | 16, /* bitsize */ | |
1487 | FALSE, /* pc_relative */ | |
1488 | 0, /* bitpos */ | |
1489 | complain_overflow_dont, /* complain_on_overflow */ | |
1490 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1491 | "R_PPC64_TPREL16_HI", /* name */ | |
1492 | FALSE, /* partial_inplace */ | |
1493 | 0, /* src_mask */ | |
1494 | 0xffff, /* dst_mask */ | |
1495 | FALSE), /* pcrel_offset */ | |
1496 | ||
1497 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1498 | HOWTO (R_PPC64_TPREL16_HA, | |
1499 | 16, /* rightshift */ | |
1500 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1501 | 16, /* bitsize */ | |
1502 | FALSE, /* pc_relative */ | |
1503 | 0, /* bitpos */ | |
1504 | complain_overflow_dont, /* complain_on_overflow */ | |
1505 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1506 | "R_PPC64_TPREL16_HA", /* name */ | |
1507 | FALSE, /* partial_inplace */ | |
1508 | 0, /* src_mask */ | |
1509 | 0xffff, /* dst_mask */ | |
1510 | FALSE), /* pcrel_offset */ | |
1511 | ||
1512 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1513 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1514 | 32, /* rightshift */ | |
1515 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1516 | 16, /* bitsize */ | |
1517 | FALSE, /* pc_relative */ | |
1518 | 0, /* bitpos */ | |
1519 | complain_overflow_dont, /* complain_on_overflow */ | |
1520 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1521 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1522 | FALSE, /* partial_inplace */ | |
1523 | 0, /* src_mask */ | |
1524 | 0xffff, /* dst_mask */ | |
1525 | FALSE), /* pcrel_offset */ | |
1526 | ||
1527 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1528 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1529 | 32, /* rightshift */ | |
1530 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1531 | 16, /* bitsize */ | |
1532 | FALSE, /* pc_relative */ | |
1533 | 0, /* bitpos */ | |
1534 | complain_overflow_dont, /* complain_on_overflow */ | |
1535 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1536 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1537 | FALSE, /* partial_inplace */ | |
1538 | 0, /* src_mask */ | |
1539 | 0xffff, /* dst_mask */ | |
1540 | FALSE), /* pcrel_offset */ | |
1541 | ||
1542 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1543 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1544 | 48, /* rightshift */ | |
1545 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1546 | 16, /* bitsize */ | |
1547 | FALSE, /* pc_relative */ | |
1548 | 0, /* bitpos */ | |
1549 | complain_overflow_dont, /* complain_on_overflow */ | |
1550 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1551 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1552 | FALSE, /* partial_inplace */ | |
1553 | 0, /* src_mask */ | |
1554 | 0xffff, /* dst_mask */ | |
1555 | FALSE), /* pcrel_offset */ | |
1556 | ||
1557 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1558 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1559 | 48, /* rightshift */ | |
1560 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1561 | 16, /* bitsize */ | |
1562 | FALSE, /* pc_relative */ | |
1563 | 0, /* bitpos */ | |
1564 | complain_overflow_dont, /* complain_on_overflow */ | |
1565 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1566 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1567 | FALSE, /* partial_inplace */ | |
1568 | 0, /* src_mask */ | |
1569 | 0xffff, /* dst_mask */ | |
1570 | FALSE), /* pcrel_offset */ | |
1571 | ||
1572 | /* Like TPREL16, but for insns with a DS field. */ | |
1573 | HOWTO (R_PPC64_TPREL16_DS, | |
1574 | 0, /* rightshift */ | |
1575 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1576 | 16, /* bitsize */ | |
1577 | FALSE, /* pc_relative */ | |
1578 | 0, /* bitpos */ | |
1579 | complain_overflow_signed, /* complain_on_overflow */ | |
1580 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1581 | "R_PPC64_TPREL16_DS", /* name */ | |
1582 | FALSE, /* partial_inplace */ | |
1583 | 0, /* src_mask */ | |
1584 | 0xfffc, /* dst_mask */ | |
1585 | FALSE), /* pcrel_offset */ | |
1586 | ||
1587 | /* Like TPREL16_DS, but no overflow. */ | |
1588 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1589 | 0, /* rightshift */ | |
1590 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1591 | 16, /* bitsize */ | |
1592 | FALSE, /* pc_relative */ | |
1593 | 0, /* bitpos */ | |
1594 | complain_overflow_dont, /* complain_on_overflow */ | |
1595 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1596 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1597 | FALSE, /* partial_inplace */ | |
1598 | 0, /* src_mask */ | |
1599 | 0xfffc, /* dst_mask */ | |
1600 | FALSE), /* pcrel_offset */ | |
1601 | ||
1602 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1603 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1604 | to the first entry relative to the TOC base (r2). */ | |
1605 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1606 | 0, /* rightshift */ | |
1607 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1608 | 16, /* bitsize */ | |
1609 | FALSE, /* pc_relative */ | |
1610 | 0, /* bitpos */ | |
1611 | complain_overflow_signed, /* complain_on_overflow */ | |
1612 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1613 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1614 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1615 | 0, /* src_mask */ |
1616 | 0xffff, /* dst_mask */ | |
b34976b6 | 1617 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1618 | |
411e1bfb AM |
1619 | /* Like GOT_TLSGD16, but no overflow. */ |
1620 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1621 | 0, /* rightshift */ |
1622 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1623 | 16, /* bitsize */ | |
b34976b6 | 1624 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1625 | 0, /* bitpos */ |
1626 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1627 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1628 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1629 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1630 | 0, /* src_mask */ |
1631 | 0xffff, /* dst_mask */ | |
b34976b6 | 1632 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1633 | |
411e1bfb AM |
1634 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1635 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1636 | 16, /* rightshift */ |
1637 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1638 | 16, /* bitsize */ | |
b34976b6 | 1639 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1640 | 0, /* bitpos */ |
1641 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1642 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1643 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1644 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1645 | 0, /* src_mask */ |
1646 | 0xffff, /* dst_mask */ | |
b34976b6 | 1647 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1648 | |
411e1bfb AM |
1649 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1650 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1651 | 16, /* rightshift */ |
1652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1653 | 16, /* bitsize */ | |
b34976b6 | 1654 | FALSE, /* pc_relative */ |
5bd4f169 | 1655 | 0, /* bitpos */ |
411e1bfb | 1656 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1657 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1658 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1659 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1660 | 0, /* src_mask */ |
1661 | 0xffff, /* dst_mask */ | |
b34976b6 | 1662 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1663 | |
411e1bfb AM |
1664 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1665 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1666 | first entry relative to the TOC base (r2). */ | |
1667 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1668 | 0, /* rightshift */ |
1669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1670 | 16, /* bitsize */ | |
b34976b6 | 1671 | FALSE, /* pc_relative */ |
5bd4f169 | 1672 | 0, /* bitpos */ |
411e1bfb AM |
1673 | complain_overflow_signed, /* complain_on_overflow */ |
1674 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1675 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1676 | FALSE, /* partial_inplace */ |
d006db6c | 1677 | 0, /* src_mask */ |
411e1bfb | 1678 | 0xffff, /* dst_mask */ |
b34976b6 | 1679 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1680 | |
411e1bfb AM |
1681 | /* Like GOT_TLSLD16, but no overflow. */ |
1682 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1683 | 0, /* rightshift */ |
1684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1685 | 16, /* bitsize */ | |
b34976b6 | 1686 | FALSE, /* pc_relative */ |
5bd4f169 | 1687 | 0, /* bitpos */ |
411e1bfb AM |
1688 | complain_overflow_dont, /* complain_on_overflow */ |
1689 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1690 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1691 | FALSE, /* partial_inplace */ |
d006db6c | 1692 | 0, /* src_mask */ |
411e1bfb | 1693 | 0xffff, /* dst_mask */ |
b34976b6 | 1694 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1695 | |
411e1bfb AM |
1696 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1697 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1698 | 16, /* rightshift */ | |
5bd4f169 AM |
1699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1700 | 16, /* bitsize */ | |
b34976b6 | 1701 | FALSE, /* pc_relative */ |
5bd4f169 | 1702 | 0, /* bitpos */ |
411e1bfb | 1703 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1704 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1705 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1706 | FALSE, /* partial_inplace */ |
d006db6c | 1707 | 0, /* src_mask */ |
411e1bfb | 1708 | 0xffff, /* dst_mask */ |
b34976b6 | 1709 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1710 | |
411e1bfb AM |
1711 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1712 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1713 | 16, /* rightshift */ | |
5bd4f169 AM |
1714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1715 | 16, /* bitsize */ | |
b34976b6 | 1716 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1717 | 0, /* bitpos */ |
1718 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1719 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1720 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1721 | FALSE, /* partial_inplace */ |
d006db6c | 1722 | 0, /* src_mask */ |
411e1bfb | 1723 | 0xffff, /* dst_mask */ |
b34976b6 | 1724 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1725 | |
411e1bfb AM |
1726 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1727 | the offset to the entry relative to the TOC base (r2). */ | |
1728 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1729 | 0, /* rightshift */ |
1730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1731 | 16, /* bitsize */ | |
b34976b6 | 1732 | FALSE, /* pc_relative */ |
5bd4f169 | 1733 | 0, /* bitpos */ |
411e1bfb | 1734 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1735 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1736 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1737 | FALSE, /* partial_inplace */ |
d006db6c | 1738 | 0, /* src_mask */ |
5bd4f169 | 1739 | 0xfffc, /* dst_mask */ |
b34976b6 | 1740 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1741 | |
411e1bfb AM |
1742 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1743 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1744 | 0, /* rightshift */ |
c061c2d8 AM |
1745 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1746 | 16, /* bitsize */ | |
b34976b6 | 1747 | FALSE, /* pc_relative */ |
5bd4f169 | 1748 | 0, /* bitpos */ |
411e1bfb AM |
1749 | complain_overflow_dont, /* complain_on_overflow */ |
1750 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1751 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1752 | FALSE, /* partial_inplace */ |
d006db6c | 1753 | 0, /* src_mask */ |
c061c2d8 | 1754 | 0xfffc, /* dst_mask */ |
b34976b6 | 1755 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1756 | |
411e1bfb AM |
1757 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1758 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1759 | 16, /* rightshift */ | |
5bd4f169 AM |
1760 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1761 | 16, /* bitsize */ | |
b34976b6 | 1762 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1763 | 0, /* bitpos */ |
1764 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1765 | ppc64_elf_unhandled_reloc, /* special_function */ |
1766 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1767 | FALSE, /* partial_inplace */ |
d006db6c | 1768 | 0, /* src_mask */ |
411e1bfb | 1769 | 0xffff, /* dst_mask */ |
b34976b6 | 1770 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1771 | |
411e1bfb AM |
1772 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1773 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1774 | 16, /* rightshift */ | |
1775 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1776 | 16, /* bitsize */ | |
1777 | FALSE, /* pc_relative */ | |
1778 | 0, /* bitpos */ | |
1779 | complain_overflow_dont, /* complain_on_overflow */ | |
1780 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1781 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1782 | FALSE, /* partial_inplace */ | |
1783 | 0, /* src_mask */ | |
1784 | 0xffff, /* dst_mask */ | |
1785 | FALSE), /* pcrel_offset */ | |
1786 | ||
1787 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1788 | offset to the entry relative to the TOC base (r2). */ | |
1789 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1790 | 0, /* rightshift */ |
1791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1792 | 16, /* bitsize */ | |
b34976b6 | 1793 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1794 | 0, /* bitpos */ |
1795 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1796 | ppc64_elf_unhandled_reloc, /* special_function */ |
1797 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1798 | FALSE, /* partial_inplace */ |
d006db6c | 1799 | 0, /* src_mask */ |
ad8e1ba5 | 1800 | 0xfffc, /* dst_mask */ |
b34976b6 | 1801 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1802 | |
411e1bfb AM |
1803 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1804 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1805 | 0, /* rightshift */ |
1806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1807 | 16, /* bitsize */ | |
b34976b6 | 1808 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1809 | 0, /* bitpos */ |
1810 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1811 | ppc64_elf_unhandled_reloc, /* special_function */ |
1812 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1813 | FALSE, /* partial_inplace */ |
d006db6c | 1814 | 0, /* src_mask */ |
ad8e1ba5 | 1815 | 0xfffc, /* dst_mask */ |
b34976b6 | 1816 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1817 | |
411e1bfb AM |
1818 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1819 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1820 | 16, /* rightshift */ | |
5bd4f169 AM |
1821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1822 | 16, /* bitsize */ | |
b34976b6 | 1823 | FALSE, /* pc_relative */ |
5bd4f169 | 1824 | 0, /* bitpos */ |
411e1bfb | 1825 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1826 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1827 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1828 | FALSE, /* partial_inplace */ |
d006db6c | 1829 | 0, /* src_mask */ |
411e1bfb | 1830 | 0xffff, /* dst_mask */ |
b34976b6 | 1831 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1832 | |
411e1bfb AM |
1833 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1834 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1835 | 16, /* rightshift */ | |
5bd4f169 AM |
1836 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1837 | 16, /* bitsize */ | |
b34976b6 | 1838 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1839 | 0, /* bitpos */ |
1840 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1841 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1842 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1843 | FALSE, /* partial_inplace */ |
d006db6c | 1844 | 0, /* src_mask */ |
411e1bfb | 1845 | 0xffff, /* dst_mask */ |
b34976b6 | 1846 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1847 | |
1848 | /* GNU extension to record C++ vtable hierarchy. */ | |
1849 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1850 | 0, /* rightshift */ | |
1851 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1852 | 0, /* bitsize */ | |
b34976b6 | 1853 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1854 | 0, /* bitpos */ |
1855 | complain_overflow_dont, /* complain_on_overflow */ | |
1856 | NULL, /* special_function */ | |
1857 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1858 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1859 | 0, /* src_mask */ |
1860 | 0, /* dst_mask */ | |
b34976b6 | 1861 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1862 | |
1863 | /* GNU extension to record C++ vtable member usage. */ | |
1864 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1865 | 0, /* rightshift */ | |
1866 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1867 | 0, /* bitsize */ | |
b34976b6 | 1868 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1869 | 0, /* bitpos */ |
1870 | complain_overflow_dont, /* complain_on_overflow */ | |
1871 | NULL, /* special_function */ | |
1872 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1873 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1874 | 0, /* src_mask */ |
1875 | 0, /* dst_mask */ | |
b34976b6 | 1876 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1877 | }; |
1878 | ||
1879 | \f | |
1880 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1881 | be done. */ | |
1882 | ||
1883 | static void | |
4ce794b7 | 1884 | ppc_howto_init (void) |
5bd4f169 AM |
1885 | { |
1886 | unsigned int i, type; | |
1887 | ||
1888 | for (i = 0; | |
1889 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1890 | i++) | |
1891 | { | |
1892 | type = ppc64_elf_howto_raw[i].type; | |
1893 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1894 | / sizeof (ppc64_elf_howto_table[0]))); | |
1895 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | static reloc_howto_type * | |
4ce794b7 AM |
1900 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1901 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1902 | { |
411e1bfb | 1903 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1904 | |
1905 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1906 | /* Initialize howto table if needed. */ | |
1907 | ppc_howto_init (); | |
1908 | ||
4ce794b7 | 1909 | switch (code) |
5bd4f169 AM |
1910 | { |
1911 | default: | |
4ce794b7 | 1912 | return NULL; |
5bd4f169 | 1913 | |
411e1bfb AM |
1914 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1915 | break; | |
1916 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1917 | break; | |
1918 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1919 | break; | |
1920 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1921 | break; | |
1922 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1923 | break; | |
1924 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1925 | break; | |
1926 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1927 | break; |
411e1bfb | 1928 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1929 | break; |
411e1bfb | 1930 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1931 | break; |
411e1bfb | 1932 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1933 | break; |
411e1bfb | 1934 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1935 | break; |
411e1bfb | 1936 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1937 | break; |
411e1bfb | 1938 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1939 | break; |
411e1bfb | 1940 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1941 | break; |
411e1bfb | 1942 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1943 | break; |
411e1bfb | 1944 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1945 | break; |
411e1bfb | 1946 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1947 | break; |
411e1bfb | 1948 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1949 | break; |
411e1bfb | 1950 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1951 | break; |
411e1bfb | 1952 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1953 | break; |
411e1bfb | 1954 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1955 | break; |
411e1bfb | 1956 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1957 | break; |
411e1bfb | 1958 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1959 | break; |
411e1bfb | 1960 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1961 | break; |
411e1bfb | 1962 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1963 | break; |
411e1bfb | 1964 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1965 | break; |
411e1bfb | 1966 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1967 | break; |
411e1bfb | 1968 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1969 | break; |
411e1bfb | 1970 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1971 | break; |
411e1bfb | 1972 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1973 | break; |
411e1bfb | 1974 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1975 | break; |
411e1bfb | 1976 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1977 | break; |
411e1bfb | 1978 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1979 | break; |
411e1bfb | 1980 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1981 | break; |
411e1bfb | 1982 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1983 | break; |
411e1bfb | 1984 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1985 | break; |
411e1bfb | 1986 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1987 | break; |
411e1bfb | 1988 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1989 | break; |
411e1bfb | 1990 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1991 | break; |
411e1bfb | 1992 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1993 | break; |
411e1bfb | 1994 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1995 | break; |
411e1bfb | 1996 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1997 | break; |
411e1bfb | 1998 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1999 | break; |
411e1bfb | 2000 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2001 | break; |
411e1bfb | 2002 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2003 | break; |
411e1bfb | 2004 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2005 | break; |
411e1bfb | 2006 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2007 | break; |
411e1bfb | 2008 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2009 | break; |
411e1bfb | 2010 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2011 | break; |
411e1bfb | 2012 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2013 | break; |
411e1bfb | 2014 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2015 | break; |
411e1bfb | 2016 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2017 | break; |
411e1bfb | 2018 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2019 | break; |
411e1bfb | 2020 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2021 | break; |
411e1bfb | 2022 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2023 | break; |
411e1bfb | 2024 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2025 | break; |
411e1bfb | 2026 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2027 | break; |
411e1bfb | 2028 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2029 | break; |
411e1bfb | 2030 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2031 | break; |
411e1bfb | 2032 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2033 | break; |
411e1bfb | 2034 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2035 | break; |
411e1bfb | 2036 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2037 | break; |
411e1bfb | 2038 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2039 | break; |
411e1bfb | 2040 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2041 | break; |
411e1bfb | 2042 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2043 | break; |
411e1bfb | 2044 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2045 | break; |
411e1bfb AM |
2046 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2047 | break; | |
2048 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2049 | break; | |
2050 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2051 | break; | |
2052 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2053 | break; | |
2054 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2055 | break; | |
2056 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2057 | break; | |
2058 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2059 | break; | |
2060 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2061 | break; | |
2062 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2063 | break; | |
2064 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2065 | break; | |
2066 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2067 | break; | |
2068 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2069 | break; | |
2070 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2071 | break; | |
2072 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2073 | break; | |
2074 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2075 | break; | |
2076 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2077 | break; | |
2078 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2079 | break; | |
2080 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2081 | break; | |
2082 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2083 | break; | |
2084 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2085 | break; | |
2086 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2087 | break; | |
2088 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2089 | break; | |
2090 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2091 | break; | |
2092 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2093 | break; | |
2094 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2095 | break; | |
2096 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2097 | break; | |
2098 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2099 | break; | |
2100 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2101 | break; | |
2102 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2103 | break; | |
2104 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2105 | break; | |
2106 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2107 | break; | |
2108 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2109 | break; | |
2110 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2111 | break; | |
2112 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2113 | break; | |
2114 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2115 | break; |
2116 | } | |
2117 | ||
4ce794b7 | 2118 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2119 | }; |
2120 | ||
157090f7 AM |
2121 | static reloc_howto_type * |
2122 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2123 | const char *r_name) | |
2124 | { | |
2125 | unsigned int i; | |
2126 | ||
2127 | for (i = 0; | |
2128 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2129 | i++) | |
2130 | if (ppc64_elf_howto_raw[i].name != NULL | |
2131 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2132 | return &ppc64_elf_howto_raw[i]; | |
2133 | ||
2134 | return NULL; | |
2135 | } | |
2136 | ||
5bd4f169 AM |
2137 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2138 | ||
2139 | static void | |
4ce794b7 AM |
2140 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2141 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2142 | { |
65f38f15 AM |
2143 | unsigned int type; |
2144 | ||
ef60b7ff | 2145 | /* Initialize howto table if needed. */ |
5bd4f169 | 2146 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2147 | ppc_howto_init (); |
2148 | ||
65f38f15 | 2149 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2150 | if (type >= (sizeof (ppc64_elf_howto_table) |
2151 | / sizeof (ppc64_elf_howto_table[0]))) | |
2152 | { | |
2153 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2154 | abfd, (int) type); |
2155 | type = R_PPC64_NONE; | |
d0fb9a8d | 2156 | } |
65f38f15 | 2157 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2158 | } |
2159 | ||
04c9666a | 2160 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2161 | |
2162 | static bfd_reloc_status_type | |
4ce794b7 AM |
2163 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2164 | void *data, asection *input_section, | |
2165 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2166 | { |
805fc799 AM |
2167 | /* If this is a relocatable link (output_bfd test tells us), just |
2168 | call the generic function. Any adjustment will be done at final | |
2169 | link time. */ | |
2170 | if (output_bfd != NULL) | |
cedb70c5 | 2171 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2172 | input_section, output_bfd, error_message); |
2173 | ||
2174 | /* Adjust the addend for sign extension of the low 16 bits. | |
2175 | We won't actually be using the low 16 bits, so trashing them | |
2176 | doesn't matter. */ | |
2177 | reloc_entry->addend += 0x8000; | |
2178 | return bfd_reloc_continue; | |
2179 | } | |
5bd4f169 | 2180 | |
2441e016 AM |
2181 | static bfd_reloc_status_type |
2182 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2183 | void *data, asection *input_section, | |
2184 | bfd *output_bfd, char **error_message) | |
2185 | { | |
2186 | if (output_bfd != NULL) | |
2187 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2188 | input_section, output_bfd, error_message); | |
2189 | ||
699733f6 AM |
2190 | if (strcmp (symbol->section->name, ".opd") == 0 |
2191 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2192 | { |
2193 | bfd_vma dest = opd_entry_value (symbol->section, | |
2194 | symbol->value + reloc_entry->addend, | |
2195 | NULL, NULL); | |
2196 | if (dest != (bfd_vma) -1) | |
2197 | reloc_entry->addend = dest - (symbol->value | |
2198 | + symbol->section->output_section->vma | |
2199 | + symbol->section->output_offset); | |
2200 | } | |
2201 | return bfd_reloc_continue; | |
2202 | } | |
2203 | ||
805fc799 | 2204 | static bfd_reloc_status_type |
4ce794b7 AM |
2205 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2206 | void *data, asection *input_section, | |
2207 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2208 | { |
2209 | long insn; | |
04c9666a | 2210 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2211 | bfd_size_type octets; |
2212 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2213 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2214 | |
2215 | /* If this is a relocatable link (output_bfd test tells us), just | |
2216 | call the generic function. Any adjustment will be done at final | |
2217 | link time. */ | |
5bd4f169 | 2218 | if (output_bfd != NULL) |
cedb70c5 | 2219 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2220 | input_section, output_bfd, error_message); |
2221 | ||
2222 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2223 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2224 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2225 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2226 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2227 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2228 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2229 | |
2230 | if (is_power4) | |
5bd4f169 | 2231 | { |
805fc799 AM |
2232 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2233 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2234 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2235 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2236 | insn |= 0x02 << 21; | |
2237 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2238 | insn |= 0x08 << 21; | |
2239 | else | |
2441e016 | 2240 | goto out; |
5bd4f169 | 2241 | } |
805fc799 AM |
2242 | else |
2243 | { | |
2244 | bfd_vma target = 0; | |
2245 | bfd_vma from; | |
5bd4f169 | 2246 | |
805fc799 AM |
2247 | if (!bfd_is_com_section (symbol->section)) |
2248 | target = symbol->value; | |
2249 | target += symbol->section->output_section->vma; | |
2250 | target += symbol->section->output_offset; | |
2251 | target += reloc_entry->addend; | |
5bd4f169 | 2252 | |
805fc799 AM |
2253 | from = (reloc_entry->address |
2254 | + input_section->output_offset | |
2255 | + input_section->output_section->vma); | |
5bd4f169 | 2256 | |
805fc799 AM |
2257 | /* Invert 'y' bit if not the default. */ |
2258 | if ((bfd_signed_vma) (target - from) < 0) | |
2259 | insn ^= 0x01 << 21; | |
2260 | } | |
4ce794b7 | 2261 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2262 | out: |
2263 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2264 | input_section, output_bfd, error_message); | |
805fc799 | 2265 | } |
5bd4f169 | 2266 | |
805fc799 | 2267 | static bfd_reloc_status_type |
4ce794b7 AM |
2268 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2269 | void *data, asection *input_section, | |
2270 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2271 | { |
2272 | /* If this is a relocatable link (output_bfd test tells us), just | |
2273 | call the generic function. Any adjustment will be done at final | |
2274 | link time. */ | |
2275 | if (output_bfd != NULL) | |
cedb70c5 | 2276 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2277 | input_section, output_bfd, error_message); |
5bd4f169 | 2278 | |
805fc799 AM |
2279 | /* Subtract the symbol section base address. */ |
2280 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2281 | return bfd_reloc_continue; |
2282 | } | |
2283 | ||
805fc799 | 2284 | static bfd_reloc_status_type |
4ce794b7 AM |
2285 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2286 | void *data, asection *input_section, | |
2287 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2288 | { |
2289 | /* If this is a relocatable link (output_bfd test tells us), just | |
2290 | call the generic function. Any adjustment will be done at final | |
2291 | link time. */ | |
2292 | if (output_bfd != NULL) | |
cedb70c5 | 2293 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2294 | input_section, output_bfd, error_message); |
2295 | ||
2296 | /* Subtract the symbol section base address. */ | |
2297 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2298 | ||
2299 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2300 | reloc_entry->addend += 0x8000; | |
2301 | return bfd_reloc_continue; | |
2302 | } | |
2303 | ||
2304 | static bfd_reloc_status_type | |
4ce794b7 AM |
2305 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2306 | void *data, asection *input_section, | |
2307 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2308 | { |
2309 | bfd_vma TOCstart; | |
2310 | ||
2311 | /* If this is a relocatable link (output_bfd test tells us), just | |
2312 | call the generic function. Any adjustment will be done at final | |
2313 | link time. */ | |
2314 | if (output_bfd != NULL) | |
cedb70c5 | 2315 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2316 | input_section, output_bfd, error_message); |
2317 | ||
2318 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2319 | if (TOCstart == 0) | |
2320 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2321 | ||
2322 | /* Subtract the TOC base address. */ | |
2323 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2324 | return bfd_reloc_continue; | |
2325 | } | |
2326 | ||
2327 | static bfd_reloc_status_type | |
4ce794b7 AM |
2328 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2329 | void *data, asection *input_section, | |
2330 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2331 | { |
2332 | bfd_vma TOCstart; | |
2333 | ||
2334 | /* If this is a relocatable link (output_bfd test tells us), just | |
2335 | call the generic function. Any adjustment will be done at final | |
2336 | link time. */ | |
2337 | if (output_bfd != NULL) | |
cedb70c5 | 2338 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2339 | input_section, output_bfd, error_message); |
2340 | ||
2341 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2342 | if (TOCstart == 0) | |
2343 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2344 | ||
2345 | /* Subtract the TOC base address. */ | |
2346 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2347 | ||
2348 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2349 | reloc_entry->addend += 0x8000; | |
2350 | return bfd_reloc_continue; | |
2351 | } | |
2352 | ||
2353 | static bfd_reloc_status_type | |
4ce794b7 AM |
2354 | ppc64_elf_toc64_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 | bfd_vma TOCstart; | |
2359 | bfd_size_type octets; | |
2360 | ||
2361 | /* If this is a relocatable link (output_bfd test tells us), just | |
2362 | call the generic function. Any adjustment will be done at final | |
2363 | link time. */ | |
2364 | if (output_bfd != NULL) | |
cedb70c5 | 2365 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2366 | input_section, output_bfd, error_message); |
2367 | ||
2368 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2369 | if (TOCstart == 0) | |
2370 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2371 | ||
2372 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2373 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2374 | return bfd_reloc_ok; | |
2375 | } | |
2376 | ||
2377 | static bfd_reloc_status_type | |
4ce794b7 AM |
2378 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2379 | void *data, asection *input_section, | |
2380 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2381 | { |
2382 | /* If this is a relocatable link (output_bfd test tells us), just | |
2383 | call the generic function. Any adjustment will be done at final | |
2384 | link time. */ | |
2385 | if (output_bfd != NULL) | |
cedb70c5 | 2386 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2387 | input_section, output_bfd, error_message); |
2388 | ||
2389 | if (error_message != NULL) | |
2390 | { | |
2391 | static char buf[60]; | |
2392 | sprintf (buf, "generic linker can't handle %s", | |
2393 | reloc_entry->howto->name); | |
2394 | *error_message = buf; | |
2395 | } | |
2396 | return bfd_reloc_dangerous; | |
2397 | } | |
2398 | ||
e717da7e AM |
2399 | struct ppc64_elf_obj_tdata |
2400 | { | |
2401 | struct elf_obj_tdata elf; | |
2402 | ||
2403 | /* Shortcuts to dynamic linker sections. */ | |
2404 | asection *got; | |
2405 | asection *relgot; | |
2406 | ||
b3fac117 AM |
2407 | /* Used during garbage collection. We attach global symbols defined |
2408 | on removed .opd entries to this section so that the sym is removed. */ | |
2409 | asection *deleted_section; | |
81688140 | 2410 | |
e717da7e AM |
2411 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2412 | sections means we potentially need one of these for each input bfd. */ | |
2413 | union { | |
2414 | bfd_signed_vma refcount; | |
2415 | bfd_vma offset; | |
2416 | } tlsld_got; | |
8860955f AM |
2417 | |
2418 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2419 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2420 | }; |
2421 | ||
2422 | #define ppc64_elf_tdata(bfd) \ | |
2423 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2424 | ||
2425 | #define ppc64_tlsld_got(bfd) \ | |
2426 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2427 | ||
2428 | /* Override the generic function because we store some extras. */ | |
2429 | ||
2430 | static bfd_boolean | |
2431 | ppc64_elf_mkobject (bfd *abfd) | |
2432 | { | |
0ffa91dd NC |
2433 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
2434 | PPC64_ELF_TDATA); | |
e717da7e AM |
2435 | } |
2436 | ||
ee75fd95 AM |
2437 | /* Return 1 if target is one of ours. */ |
2438 | ||
7b53ace3 | 2439 | static bfd_boolean |
ee75fd95 | 2440 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2441 | { |
2442 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2443 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2444 | ||
2445 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2446 | } | |
2447 | ||
feee612b AM |
2448 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2449 | default is 32 bit. */ | |
2450 | ||
b34976b6 | 2451 | static bfd_boolean |
4ce794b7 | 2452 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2453 | { |
2454 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2455 | { | |
2456 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2457 | ||
2458 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2459 | { | |
2460 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2461 | abfd->arch_info = abfd->arch_info->next; | |
2462 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2463 | } | |
2464 | } | |
b34976b6 | 2465 | return TRUE; |
feee612b AM |
2466 | } |
2467 | ||
d37c89e5 AM |
2468 | /* Support for core dump NOTE sections. */ |
2469 | ||
2470 | static bfd_boolean | |
2471 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2472 | { | |
eea6121a | 2473 | size_t offset, size; |
d37c89e5 AM |
2474 | |
2475 | if (note->descsz != 504) | |
2476 | return FALSE; | |
2477 | ||
2478 | /* pr_cursig */ | |
2479 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2480 | ||
2481 | /* pr_pid */ | |
2482 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2483 | ||
2484 | /* pr_reg */ | |
2485 | offset = 112; | |
eea6121a | 2486 | size = 384; |
d37c89e5 AM |
2487 | |
2488 | /* Make a ".reg/999" section. */ | |
2489 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2490 | size, note->descpos + offset); |
d37c89e5 AM |
2491 | } |
2492 | ||
2493 | static bfd_boolean | |
2494 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2495 | { | |
2496 | if (note->descsz != 136) | |
2497 | return FALSE; | |
2498 | ||
2499 | elf_tdata (abfd)->core_program | |
2500 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2501 | elf_tdata (abfd)->core_command | |
2502 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2503 | ||
2504 | return TRUE; | |
2505 | } | |
2506 | ||
183e98be AM |
2507 | static char * |
2508 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2509 | ...) | |
2510 | { | |
2511 | switch (note_type) | |
2512 | { | |
2513 | default: | |
2514 | return NULL; | |
2515 | ||
2516 | case NT_PRPSINFO: | |
2517 | { | |
2518 | char data[136]; | |
2519 | va_list ap; | |
2520 | ||
2521 | va_start (ap, note_type); | |
2522 | memset (data, 0, 40); | |
2523 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2524 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2525 | va_end (ap); | |
2526 | return elfcore_write_note (abfd, buf, bufsiz, | |
2527 | "CORE", note_type, data, sizeof (data)); | |
2528 | } | |
2529 | ||
2530 | case NT_PRSTATUS: | |
2531 | { | |
2532 | char data[504]; | |
2533 | va_list ap; | |
2534 | long pid; | |
2535 | int cursig; | |
2536 | const void *greg; | |
2537 | ||
2538 | va_start (ap, note_type); | |
2539 | memset (data, 0, 112); | |
2540 | pid = va_arg (ap, long); | |
2541 | bfd_put_32 (abfd, pid, data + 32); | |
2542 | cursig = va_arg (ap, int); | |
2543 | bfd_put_16 (abfd, cursig, data + 12); | |
2544 | greg = va_arg (ap, const void *); | |
2545 | memcpy (data + 112, greg, 384); | |
2546 | memset (data + 496, 0, 8); | |
2547 | va_end (ap); | |
2548 | return elfcore_write_note (abfd, buf, bufsiz, | |
2549 | "CORE", note_type, data, sizeof (data)); | |
2550 | } | |
2551 | } | |
2552 | } | |
2553 | ||
5bd4f169 AM |
2554 | /* Merge backend specific data from an object file to the output |
2555 | object file when linking. */ | |
2f6d9989 | 2556 | |
b34976b6 | 2557 | static bfd_boolean |
4ce794b7 | 2558 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2559 | { |
5bd4f169 AM |
2560 | /* Check if we have the same endianess. */ |
2561 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2562 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2563 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2564 | { | |
2565 | const char *msg; | |
2566 | ||
2567 | if (bfd_big_endian (ibfd)) | |
d003868e | 2568 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2569 | "and target is little endian"); |
5bd4f169 | 2570 | else |
d003868e | 2571 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2572 | "and target is big endian"); |
5bd4f169 | 2573 | |
d003868e | 2574 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2575 | |
2576 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2577 | return FALSE; |
5bd4f169 AM |
2578 | } |
2579 | ||
b34976b6 | 2580 | return TRUE; |
5bd4f169 | 2581 | } |
f0abc2a1 | 2582 | |
5d35169e AM |
2583 | /* Add extra PPC sections. */ |
2584 | ||
b35d266b | 2585 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2586 | { |
0112cd26 NC |
2587 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2588 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2589 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2590 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2591 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2592 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2593 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2594 | }; |
2595 | ||
7c8fe5c4 AM |
2596 | enum _ppc64_sec_type { |
2597 | sec_normal = 0, | |
2598 | sec_opd = 1, | |
2599 | sec_toc = 2 | |
2600 | }; | |
2601 | ||
f0abc2a1 AM |
2602 | struct _ppc64_elf_section_data |
2603 | { | |
2604 | struct bfd_elf_section_data elf; | |
411e1bfb | 2605 | |
f0abc2a1 AM |
2606 | union |
2607 | { | |
74f0fb50 AM |
2608 | /* An array with one entry for each opd function descriptor. */ |
2609 | struct _opd_sec_data | |
2610 | { | |
2611 | /* Points to the function code section for local opd entries. */ | |
2612 | asection **func_sec; | |
2613 | ||
2614 | /* After editing .opd, adjust references to opd local syms. */ | |
2615 | long *adjust; | |
2616 | } opd; | |
7c8fe5c4 AM |
2617 | |
2618 | /* An array for toc sections, indexed by offset/8. | |
2619 | Specifies the relocation symbol index used at a given toc offset. */ | |
2620 | unsigned *t_symndx; | |
2621 | } u; | |
2622 | ||
2623 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2624 | |
7c8fe5c4 AM |
2625 | /* Flag set when small branches are detected. Used to |
2626 | select suitable defaults for the stub group size. */ | |
2627 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2628 | }; |
2629 | ||
2630 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2631 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2632 | |
2633 | static bfd_boolean | |
4ce794b7 | 2634 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2635 | { |
f592407e AM |
2636 | if (!sec->used_by_bfd) |
2637 | { | |
2638 | struct _ppc64_elf_section_data *sdata; | |
2639 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2640 | |
f592407e AM |
2641 | sdata = bfd_zalloc (abfd, amt); |
2642 | if (sdata == NULL) | |
2643 | return FALSE; | |
2644 | sec->used_by_bfd = sdata; | |
2645 | } | |
f0abc2a1 AM |
2646 | |
2647 | return _bfd_elf_new_section_hook (abfd, sec); | |
2648 | } | |
4025353c | 2649 | |
74f0fb50 | 2650 | static struct _opd_sec_data * |
4025353c AM |
2651 | get_opd_info (asection * sec) |
2652 | { | |
2653 | if (sec != NULL | |
2654 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2655 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2656 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2657 | return NULL; |
2658 | } | |
90e3cdf2 JJ |
2659 | \f |
2660 | /* Parameters for the qsort hook. */ | |
2661 | static asection *synthetic_opd; | |
2662 | static bfd_boolean synthetic_relocatable; | |
2663 | ||
699733f6 | 2664 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2665 | |
2666 | static int | |
2667 | compare_symbols (const void *ap, const void *bp) | |
2668 | { | |
2669 | const asymbol *a = * (const asymbol **) ap; | |
2670 | const asymbol *b = * (const asymbol **) bp; | |
2671 | ||
699733f6 AM |
2672 | /* Section symbols first. */ |
2673 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2674 | return -1; |
699733f6 | 2675 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2676 | return 1; |
2677 | ||
699733f6 | 2678 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2679 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2680 | return -1; | |
2681 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2682 | return 1; | |
2683 | ||
699733f6 | 2684 | /* then other code symbols. */ |
90e3cdf2 JJ |
2685 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2686 | == (SEC_CODE | SEC_ALLOC) | |
2687 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2688 | != (SEC_CODE | SEC_ALLOC)) | |
2689 | return -1; | |
2690 | ||
2691 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2692 | != (SEC_CODE | SEC_ALLOC) | |
2693 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2694 | == (SEC_CODE | SEC_ALLOC)) | |
2695 | return 1; | |
2696 | ||
2697 | if (synthetic_relocatable) | |
2698 | { | |
2699 | if (a->section->id < b->section->id) | |
2700 | return -1; | |
2701 | ||
2702 | if (a->section->id > b->section->id) | |
2703 | return 1; | |
2704 | } | |
2705 | ||
2706 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2707 | return -1; | |
2708 | ||
2709 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2710 | return 1; | |
2711 | ||
4d35a0aa AM |
2712 | /* For syms with the same value, prefer strong dynamic global function |
2713 | syms over other syms. */ | |
2714 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2715 | return -1; | |
2716 | ||
2717 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2718 | return 1; | |
2719 | ||
2720 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2721 | return -1; | |
2722 | ||
2723 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2724 | return 1; | |
2725 | ||
2726 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2727 | return -1; | |
2728 | ||
2729 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2730 | return 1; | |
2731 | ||
2732 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2733 | return -1; | |
2734 | ||
2735 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2736 | return 1; | |
2737 | ||
90e3cdf2 JJ |
2738 | return 0; |
2739 | } | |
2740 | ||
699733f6 | 2741 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2742 | |
699733f6 AM |
2743 | static asymbol * |
2744 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2745 | { |
699733f6 | 2746 | long mid; |
90e3cdf2 | 2747 | |
699733f6 AM |
2748 | if (id == -1) |
2749 | { | |
2750 | while (lo < hi) | |
2751 | { | |
2752 | mid = (lo + hi) >> 1; | |
2753 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2754 | lo = mid + 1; | |
2755 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2756 | hi = mid; | |
2757 | else | |
2758 | return syms[mid]; | |
2759 | } | |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | while (lo < hi) | |
2764 | { | |
2765 | mid = (lo + hi) >> 1; | |
2766 | if (syms[mid]->section->id < id) | |
2767 | lo = mid + 1; | |
2768 | else if (syms[mid]->section->id > id) | |
2769 | hi = mid; | |
2770 | else if (syms[mid]->value < value) | |
2771 | lo = mid + 1; | |
2772 | else if (syms[mid]->value > value) | |
2773 | hi = mid; | |
2774 | else | |
2775 | return syms[mid]; | |
2776 | } | |
2777 | } | |
2778 | return NULL; | |
90e3cdf2 JJ |
2779 | } |
2780 | ||
699733f6 AM |
2781 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2782 | entry syms. */ | |
90e3cdf2 JJ |
2783 | |
2784 | static long | |
a7535cf3 AM |
2785 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2786 | long static_count, asymbol **static_syms, | |
2787 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2788 | asymbol **ret) |
90e3cdf2 JJ |
2789 | { |
2790 | asymbol *s; | |
699733f6 AM |
2791 | long i; |
2792 | long count; | |
90e3cdf2 | 2793 | char *names; |
a7535cf3 | 2794 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2795 | asection *opd; |
90e3cdf2 | 2796 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2797 | asymbol **syms; |
90e3cdf2 JJ |
2798 | |
2799 | *ret = NULL; | |
2800 | ||
2801 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2802 | if (opd == NULL) | |
2803 | return 0; | |
2804 | ||
a7535cf3 | 2805 | symcount = static_count; |
c9727e01 | 2806 | if (!relocatable) |
a7535cf3 | 2807 | symcount += dyn_count; |
90e3cdf2 | 2808 | if (symcount == 0) |
c9727e01 | 2809 | return 0; |
90e3cdf2 | 2810 | |
a7535cf3 AM |
2811 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2812 | if (syms == NULL) | |
7356fed5 | 2813 | return -1; |
a7535cf3 AM |
2814 | |
2815 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2816 | { | |
2817 | /* Use both symbol tables. */ | |
2818 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2819 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2820 | } | |
2821 | else if (!relocatable && static_count == 0) | |
2822 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2823 | else | |
2824 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2825 | ||
90e3cdf2 JJ |
2826 | synthetic_opd = opd; |
2827 | synthetic_relocatable = relocatable; | |
595da8c5 | 2828 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2829 | |
c9727e01 AM |
2830 | if (!relocatable && symcount > 1) |
2831 | { | |
2832 | long j; | |
2833 | /* Trim duplicate syms, since we may have merged the normal and | |
2834 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2835 | different values, so trim any with the same value. */ |
c9727e01 AM |
2836 | for (i = 1, j = 1; i < symcount; ++i) |
2837 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2838 | != syms[i]->value + syms[i]->section->vma) | |
2839 | syms[j++] = syms[i]; | |
2840 | symcount = j; | |
2841 | } | |
2842 | ||
699733f6 AM |
2843 | i = 0; |
2844 | if (syms[i]->section == opd) | |
2845 | ++i; | |
2846 | codesecsym = i; | |
90e3cdf2 | 2847 | |
699733f6 AM |
2848 | for (; i < symcount; ++i) |
2849 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2850 | != (SEC_CODE | SEC_ALLOC)) | |
2851 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2852 | break; | |
2853 | codesecsymend = i; | |
90e3cdf2 | 2854 | |
699733f6 AM |
2855 | for (; i < symcount; ++i) |
2856 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2857 | break; | |
2858 | secsymend = i; | |
90e3cdf2 | 2859 | |
699733f6 AM |
2860 | for (; i < symcount; ++i) |
2861 | if (syms[i]->section != opd) | |
2862 | break; | |
2863 | opdsymend = i; | |
90e3cdf2 | 2864 | |
699733f6 AM |
2865 | for (; i < symcount; ++i) |
2866 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2867 | != (SEC_CODE | SEC_ALLOC)) | |
2868 | break; | |
2869 | symcount = i; | |
2870 | ||
c9727e01 | 2871 | count = 0; |
699733f6 | 2872 | if (opdsymend == secsymend) |
c9727e01 | 2873 | goto done; |
90e3cdf2 | 2874 | |
699733f6 | 2875 | if (relocatable) |
90e3cdf2 | 2876 | { |
699733f6 AM |
2877 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2878 | arelent *r; | |
2879 | size_t size; | |
2880 | long relcount; | |
90e3cdf2 | 2881 | |
699733f6 | 2882 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2883 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2884 | if (relcount == 0) |
c9727e01 | 2885 | goto done; |
90e3cdf2 | 2886 | |
7356fed5 AM |
2887 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2888 | { | |
2889 | count = -1; | |
2890 | goto done; | |
2891 | } | |
2892 | ||
699733f6 | 2893 | size = 0; |
595da8c5 | 2894 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2895 | { |
2896 | asymbol *sym; | |
90e3cdf2 | 2897 | |
595da8c5 | 2898 | while (r < opd->relocation + relcount |
699733f6 AM |
2899 | && r->address < syms[i]->value + opd->vma) |
2900 | ++r; | |
90e3cdf2 | 2901 | |
595da8c5 | 2902 | if (r == opd->relocation + relcount) |
699733f6 | 2903 | break; |
90e3cdf2 | 2904 | |
699733f6 AM |
2905 | if (r->address != syms[i]->value + opd->vma) |
2906 | continue; | |
90e3cdf2 | 2907 | |
699733f6 AM |
2908 | if (r->howto->type != R_PPC64_ADDR64) |
2909 | continue; | |
90e3cdf2 | 2910 | |
699733f6 AM |
2911 | sym = *r->sym_ptr_ptr; |
2912 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2913 | sym->section->id, sym->value + r->addend)) | |
2914 | { | |
2915 | ++count; | |
2916 | size += sizeof (asymbol); | |
2917 | size += strlen (syms[i]->name) + 2; | |
2918 | } | |
2919 | } | |
90e3cdf2 | 2920 | |
699733f6 AM |
2921 | s = *ret = bfd_malloc (size); |
2922 | if (s == NULL) | |
2923 | { | |
7356fed5 | 2924 | count = -1; |
c9727e01 | 2925 | goto done; |
699733f6 | 2926 | } |
90e3cdf2 | 2927 | |
699733f6 | 2928 | names = (char *) (s + count); |
90e3cdf2 | 2929 | |
595da8c5 | 2930 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2931 | { |
699733f6 | 2932 | asymbol *sym; |
90e3cdf2 | 2933 | |
595da8c5 | 2934 | while (r < opd->relocation + relcount |
699733f6 AM |
2935 | && r->address < syms[i]->value + opd->vma) |
2936 | ++r; | |
90e3cdf2 | 2937 | |
595da8c5 | 2938 | if (r == opd->relocation + relcount) |
699733f6 AM |
2939 | break; |
2940 | ||
2941 | if (r->address != syms[i]->value + opd->vma) | |
2942 | continue; | |
2943 | ||
2944 | if (r->howto->type != R_PPC64_ADDR64) | |
2945 | continue; | |
90e3cdf2 | 2946 | |
699733f6 AM |
2947 | sym = *r->sym_ptr_ptr; |
2948 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2949 | sym->section->id, sym->value + r->addend)) | |
2950 | { | |
2951 | size_t len; | |
2952 | ||
2953 | *s = *syms[i]; | |
2954 | s->section = sym->section; | |
2955 | s->value = sym->value + r->addend; | |
2956 | s->name = names; | |
2957 | *names++ = '.'; | |
2958 | len = strlen (syms[i]->name); | |
2959 | memcpy (names, syms[i]->name, len + 1); | |
2960 | names += len + 1; | |
6f610d07 UW |
2961 | /* Have udata.p point back to the original symbol this |
2962 | synthetic symbol was derived from. */ | |
2963 | s->udata.p = syms[i]; | |
699733f6 AM |
2964 | s++; |
2965 | } | |
2966 | } | |
2967 | } | |
2968 | else | |
90e3cdf2 | 2969 | { |
699733f6 AM |
2970 | bfd_byte *contents; |
2971 | size_t size; | |
90e3cdf2 | 2972 | |
699733f6 AM |
2973 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2974 | { | |
2975 | if (contents) | |
c9727e01 AM |
2976 | { |
2977 | free_contents_and_exit: | |
2978 | free (contents); | |
2979 | } | |
7356fed5 | 2980 | count = -1; |
c9727e01 | 2981 | goto done; |
699733f6 | 2982 | } |
90e3cdf2 | 2983 | |
699733f6 AM |
2984 | size = 0; |
2985 | for (i = secsymend; i < opdsymend; ++i) | |
2986 | { | |
2987 | bfd_vma ent; | |
90e3cdf2 | 2988 | |
699733f6 AM |
2989 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2990 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2991 | { | |
2992 | ++count; | |
2993 | size += sizeof (asymbol); | |
2994 | size += strlen (syms[i]->name) + 2; | |
2995 | } | |
2996 | } | |
90e3cdf2 | 2997 | |
699733f6 AM |
2998 | s = *ret = bfd_malloc (size); |
2999 | if (s == NULL) | |
7356fed5 | 3000 | goto free_contents_and_exit; |
90e3cdf2 | 3001 | |
699733f6 | 3002 | names = (char *) (s + count); |
90e3cdf2 | 3003 | |
699733f6 | 3004 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3005 | { |
699733f6 | 3006 | bfd_vma ent; |
90e3cdf2 | 3007 | |
699733f6 AM |
3008 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3009 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3010 | { |
c9727e01 | 3011 | long lo, hi; |
699733f6 | 3012 | size_t len; |
c9727e01 | 3013 | asection *sec = abfd->sections; |
90e3cdf2 | 3014 | |
699733f6 AM |
3015 | *s = *syms[i]; |
3016 | lo = codesecsym; | |
3017 | hi = codesecsymend; | |
3018 | while (lo < hi) | |
3019 | { | |
c9727e01 | 3020 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3021 | if (syms[mid]->section->vma < ent) |
3022 | lo = mid + 1; | |
3023 | else if (syms[mid]->section->vma > ent) | |
3024 | hi = mid; | |
3025 | else | |
c9727e01 AM |
3026 | { |
3027 | sec = syms[mid]->section; | |
3028 | break; | |
3029 | } | |
699733f6 AM |
3030 | } |
3031 | ||
c9727e01 | 3032 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3033 | sec = syms[lo - 1]->section; |
699733f6 AM |
3034 | |
3035 | for (; sec != NULL; sec = sec->next) | |
3036 | { | |
3037 | if (sec->vma > ent) | |
3038 | break; | |
3039 | if ((sec->flags & SEC_ALLOC) == 0 | |
3040 | || (sec->flags & SEC_LOAD) == 0) | |
3041 | break; | |
3042 | if ((sec->flags & SEC_CODE) != 0) | |
3043 | s->section = sec; | |
3044 | } | |
3045 | s->value = ent - s->section->vma; | |
3046 | s->name = names; | |
3047 | *names++ = '.'; | |
3048 | len = strlen (syms[i]->name); | |
3049 | memcpy (names, syms[i]->name, len + 1); | |
3050 | names += len + 1; | |
6f610d07 UW |
3051 | /* Have udata.p point back to the original symbol this |
3052 | synthetic symbol was derived from. */ | |
3053 | s->udata.p = syms[i]; | |
699733f6 | 3054 | s++; |
90e3cdf2 | 3055 | } |
90e3cdf2 | 3056 | } |
699733f6 | 3057 | free (contents); |
90e3cdf2 JJ |
3058 | } |
3059 | ||
c9727e01 | 3060 | done: |
a7535cf3 | 3061 | free (syms); |
90e3cdf2 JJ |
3062 | return count; |
3063 | } | |
5bd4f169 | 3064 | \f |
65f38f15 AM |
3065 | /* The following functions are specific to the ELF linker, while |
3066 | functions above are used generally. Those named ppc64_elf_* are | |
3067 | called by the main ELF linker code. They appear in this file more | |
3068 | or less in the order in which they are called. eg. | |
3069 | ppc64_elf_check_relocs is called early in the link process, | |
3070 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3071 | called. |
3072 | ||
3073 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3074 | functions have both a function code symbol and a function descriptor | |
3075 | symbol. A call to foo in a relocatable object file looks like: | |
3076 | ||
3077 | . .text | |
3078 | . x: | |
3079 | . bl .foo | |
3080 | . nop | |
3081 | ||
3082 | The function definition in another object file might be: | |
3083 | ||
3084 | . .section .opd | |
3085 | . foo: .quad .foo | |
3086 | . .quad .TOC.@tocbase | |
3087 | . .quad 0 | |
3088 | . | |
3089 | . .text | |
3090 | . .foo: blr | |
3091 | ||
3092 | When the linker resolves the call during a static link, the branch | |
3093 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3094 | If the function definition is in a shared library, things are a little | |
3095 | different: The call goes via a plt call stub, the opd information gets | |
3096 | copied to the plt, and the linker patches the nop. | |
3097 | ||
3098 | . x: | |
3099 | . bl .foo_stub | |
3100 | . ld 2,40(1) | |
3101 | . | |
3102 | . | |
3103 | . .foo_stub: | |
3104 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3105 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3106 | . std 2,40(1) # this is the general idea |
3107 | . ld 11,0(12) | |
3108 | . ld 2,8(12) | |
3109 | . mtctr 11 | |
3110 | . ld 11,16(12) | |
3111 | . bctr | |
3112 | . | |
3113 | . .section .plt | |
3114 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3115 | ||
3116 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3117 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3118 | copying. | |
3119 | ||
3120 | What are the difficulties here? Well, firstly, the relocations | |
3121 | examined by the linker in check_relocs are against the function code | |
3122 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3123 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3124 | to carefully copy dynamic link information from one symbol to the other. | |
3125 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3126 | symbol as is normal for most other backends. We need foo dynamic | |
3127 | instead, at least for an application final link. However, when | |
3128 | creating a shared library containing foo, we need to have both symbols | |
3129 | dynamic so that references to .foo are satisfied during the early | |
3130 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3131 | definition from some other object, eg. a static library. |
3132 | ||
3133 | Update: As of August 2004, we support a new convention. Function | |
3134 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3135 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3136 | |
3137 | /* The linker needs to keep track of the number of relocs that it | |
3138 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3139 | This is so that it can later discard them if they are found to be | |
3140 | unnecessary. We store the information in a field extending the | |
3141 | regular ELF linker hash table. */ | |
3142 | ||
3143 | struct ppc_dyn_relocs | |
3144 | { | |
3145 | struct ppc_dyn_relocs *next; | |
3146 | ||
3147 | /* The input section of the reloc. */ | |
3148 | asection *sec; | |
3149 | ||
3150 | /* Total number of relocs copied for the input section. */ | |
3151 | bfd_size_type count; | |
3152 | ||
3153 | /* Number of pc-relative relocs copied for the input section. */ | |
3154 | bfd_size_type pc_count; | |
3155 | }; | |
3156 | ||
411e1bfb AM |
3157 | /* Track GOT entries needed for a given symbol. We might need more |
3158 | than one got entry per symbol. */ | |
3159 | struct got_entry | |
3160 | { | |
3161 | struct got_entry *next; | |
3162 | ||
e7b938ca | 3163 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3164 | bfd_vma addend; |
3165 | ||
e717da7e AM |
3166 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3167 | symbol referenced from different input files. This is to support | |
3168 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
102890f0 AM |
3169 | from one input file to another. FIXME: After group_sections we |
3170 | ought to merge entries within the group. | |
e717da7e AM |
3171 | |
3172 | Point to the BFD owning this GOT entry. */ | |
3173 | bfd *owner; | |
3174 | ||
3175 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3176 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3177 | char tls_type; | |
3178 | ||
e7b938ca | 3179 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3180 | union |
3181 | { | |
3182 | bfd_signed_vma refcount; | |
3183 | bfd_vma offset; | |
3184 | } got; | |
411e1bfb AM |
3185 | }; |
3186 | ||
3187 | /* The same for PLT. */ | |
3188 | struct plt_entry | |
3189 | { | |
3190 | struct plt_entry *next; | |
3191 | ||
3192 | bfd_vma addend; | |
3193 | ||
3194 | union | |
3195 | { | |
3196 | bfd_signed_vma refcount; | |
3197 | bfd_vma offset; | |
3198 | } plt; | |
3199 | }; | |
3200 | ||
65f38f15 | 3201 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3202 | selects those that must be copied when linking a shared library, |
3203 | even when the symbol is local. */ | |
65f38f15 | 3204 | |
411e1bfb | 3205 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3206 | ((RTYPE) != R_PPC64_REL32 \ |
3207 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3208 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3209 | |
f4656909 AM |
3210 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3211 | copying dynamic variables from a shared lib into an app's dynbss | |
3212 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3213 | shared lib. With code that gcc generates, it's vital that this be |
3214 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3215 | the address of a function descriptor, which resides in the .opd | |
3216 | section. gcc uses the descriptor directly rather than going via the | |
3217 | GOT as some other ABI's do, which means that initialized function | |
3218 | pointers must reference the descriptor. Thus, a function pointer | |
3219 | initialized to the address of a function in a shared library will | |
3220 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3221 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3222 | presents a problem as a plt entry for that function is also |
3223 | initialized from the function descriptor symbol and the copy reloc | |
3224 | may not be initialized first. */ | |
a23b6845 | 3225 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3226 | |
721956f4 AM |
3227 | /* Section name for stubs is the associated section name plus this |
3228 | string. */ | |
3229 | #define STUB_SUFFIX ".stub" | |
3230 | ||
3231 | /* Linker stubs. | |
3232 | ppc_stub_long_branch: | |
3233 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3234 | destination, but a 24 bit branch in a stub section will reach. | |
3235 | . b dest | |
3236 | ||
3237 | ppc_stub_plt_branch: | |
3238 | Similar to the above, but a 24 bit branch in the stub section won't | |
3239 | reach its destination. | |
87e226ce AM |
3240 | . addis %r12,%r2,xxx@toc@ha |
3241 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3242 | . mtctr %r11 |
3243 | . bctr | |
3244 | ||
3245 | ppc_stub_plt_call: | |
2c66dc6c AM |
3246 | Used to call a function in a shared library. If it so happens that |
3247 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3248 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3249 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3250 | . std %r2,40(%r1) |
87e226ce | 3251 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3252 | . mtctr %r11 |
ac2df442 | 3253 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3254 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3255 | . bctr |
ad8e1ba5 AM |
3256 | |
3257 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3258 | code to adjust the value and save r2 to support multiple toc sections. | |
3259 | A ppc_stub_long_branch with an r2 offset looks like: | |
3260 | . std %r2,40(%r1) | |
3261 | . addis %r2,%r2,off@ha | |
3262 | . addi %r2,%r2,off@l | |
3263 | . b dest | |
3264 | ||
3265 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3266 | . std %r2,40(%r1) | |
3267 | . addis %r12,%r2,xxx@toc@ha | |
3268 | . ld %r11,xxx@toc@l(%r12) | |
3269 | . addis %r2,%r2,off@ha | |
3270 | . addi %r2,%r2,off@l | |
3271 | . mtctr %r11 | |
3272 | . bctr | |
ac2df442 AM |
3273 | |
3274 | In cases where the "addis" instruction would add zero, the "addis" is | |
3275 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3276 | */ |
3277 | ||
3278 | enum ppc_stub_type { | |
3279 | ppc_stub_none, | |
3280 | ppc_stub_long_branch, | |
ad8e1ba5 | 3281 | ppc_stub_long_branch_r2off, |
721956f4 | 3282 | ppc_stub_plt_branch, |
ad8e1ba5 | 3283 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3284 | ppc_stub_plt_call |
3285 | }; | |
3286 | ||
3287 | struct ppc_stub_hash_entry { | |
3288 | ||
3289 | /* Base hash table entry structure. */ | |
3290 | struct bfd_hash_entry root; | |
3291 | ||
ad8e1ba5 AM |
3292 | enum ppc_stub_type stub_type; |
3293 | ||
721956f4 AM |
3294 | /* The stub section. */ |
3295 | asection *stub_sec; | |
3296 | ||
3297 | /* Offset within stub_sec of the beginning of this stub. */ | |
3298 | bfd_vma stub_offset; | |
3299 | ||
3300 | /* Given the symbol's value and its section we can determine its final | |
3301 | value when building the stubs (so the stub knows where to jump. */ | |
3302 | bfd_vma target_value; | |
3303 | asection *target_section; | |
3304 | ||
721956f4 AM |
3305 | /* The symbol table entry, if any, that this was derived from. */ |
3306 | struct ppc_link_hash_entry *h; | |
3307 | ||
411e1bfb AM |
3308 | /* And the reloc addend that this was derived from. */ |
3309 | bfd_vma addend; | |
3310 | ||
721956f4 AM |
3311 | /* Where this stub is being called from, or, in the case of combined |
3312 | stub sections, the first input section in the group. */ | |
3313 | asection *id_sec; | |
3314 | }; | |
3315 | ||
3316 | struct ppc_branch_hash_entry { | |
3317 | ||
3318 | /* Base hash table entry structure. */ | |
3319 | struct bfd_hash_entry root; | |
3320 | ||
c456f082 | 3321 | /* Offset within branch lookup table. */ |
721956f4 AM |
3322 | unsigned int offset; |
3323 | ||
3324 | /* Generation marker. */ | |
3325 | unsigned int iter; | |
3326 | }; | |
65f38f15 AM |
3327 | |
3328 | struct ppc_link_hash_entry | |
3329 | { | |
3330 | struct elf_link_hash_entry elf; | |
3331 | ||
b3fac117 AM |
3332 | union { |
3333 | /* A pointer to the most recently used stub hash entry against this | |
3334 | symbol. */ | |
3335 | struct ppc_stub_hash_entry *stub_cache; | |
3336 | ||
3337 | /* A pointer to the next symbol starting with a '.' */ | |
3338 | struct ppc_link_hash_entry *next_dot_sym; | |
3339 | } u; | |
721956f4 | 3340 | |
65f38f15 AM |
3341 | /* Track dynamic relocs copied for this symbol. */ |
3342 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3343 | |
721956f4 | 3344 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3345 | struct ppc_link_hash_entry *oh; |
721956f4 | 3346 | |
e86ce104 AM |
3347 | /* Flag function code and descriptor symbols. */ |
3348 | unsigned int is_func:1; | |
3349 | unsigned int is_func_descriptor:1; | |
908b32fc | 3350 | unsigned int fake:1; |
411e1bfb | 3351 | |
c5614fa4 AM |
3352 | /* Whether global opd/toc sym has been adjusted or not. |
3353 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3354 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3355 | unsigned int adjust_done:1; |
3356 | ||
99877b66 AM |
3357 | /* Set if we twiddled this symbol to weak at some stage. */ |
3358 | unsigned int was_undefined:1; | |
3359 | ||
411e1bfb | 3360 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3361 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3362 | corresponding relocs are encountered during check_relocs. | |
3363 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3364 | indicate the corresponding GOT entry type is not needed. | |
3365 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3366 | a TPREL one. We use a separate flag rather than setting TPREL | |
3367 | just for convenience in distinguishing the two cases. */ | |
3368 | #define TLS_GD 1 /* GD reloc. */ | |
3369 | #define TLS_LD 2 /* LD reloc. */ | |
3370 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3371 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3372 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3373 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3374 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3375 | char tls_mask; | |
65f38f15 AM |
3376 | }; |
3377 | ||
3378 | /* ppc64 ELF linker hash table. */ | |
3379 | ||
3380 | struct ppc_link_hash_table | |
3381 | { | |
3382 | struct elf_link_hash_table elf; | |
3383 | ||
721956f4 AM |
3384 | /* The stub hash table. */ |
3385 | struct bfd_hash_table stub_hash_table; | |
3386 | ||
3387 | /* Another hash table for plt_branch stubs. */ | |
3388 | struct bfd_hash_table branch_hash_table; | |
3389 | ||
3390 | /* Linker stub bfd. */ | |
3391 | bfd *stub_bfd; | |
3392 | ||
3393 | /* Linker call-backs. */ | |
4ce794b7 AM |
3394 | asection * (*add_stub_section) (const char *, asection *); |
3395 | void (*layout_sections_again) (void); | |
721956f4 AM |
3396 | |
3397 | /* Array to keep track of which stub sections have been created, and | |
3398 | information on stub grouping. */ | |
3399 | struct map_stub { | |
3400 | /* This is the section to which stubs in the group will be attached. */ | |
3401 | asection *link_sec; | |
3402 | /* The stub section. */ | |
3403 | asection *stub_sec; | |
ad8e1ba5 AM |
3404 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3405 | bfd_vma toc_off; | |
721956f4 AM |
3406 | } *stub_group; |
3407 | ||
ad8e1ba5 AM |
3408 | /* Temp used when calculating TOC pointers. */ |
3409 | bfd_vma toc_curr; | |
3410 | ||
8f3bab57 AM |
3411 | /* Highest input section id. */ |
3412 | int top_id; | |
3413 | ||
734b6cf9 AM |
3414 | /* Highest output section index. */ |
3415 | int top_index; | |
3416 | ||
b3fac117 AM |
3417 | /* Used when adding symbols. */ |
3418 | struct ppc_link_hash_entry *dot_syms; | |
3419 | ||
734b6cf9 AM |
3420 | /* List of input sections for each output section. */ |
3421 | asection **input_list; | |
721956f4 | 3422 | |
65f38f15 | 3423 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3424 | asection *got; |
4ce794b7 AM |
3425 | asection *plt; |
3426 | asection *relplt; | |
3427 | asection *dynbss; | |
3428 | asection *relbss; | |
3429 | asection *glink; | |
82bd7b59 | 3430 | asection *sfpr; |
4ce794b7 AM |
3431 | asection *brlt; |
3432 | asection *relbrlt; | |
ec338859 | 3433 | |
8387904d AM |
3434 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3435 | struct ppc_link_hash_entry *tls_get_addr; | |
3436 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3437 | |
9b5ecbd0 AM |
3438 | /* Statistics. */ |
3439 | unsigned long stub_count[ppc_stub_plt_call]; | |
3440 | ||
ee75fd95 AM |
3441 | /* Number of stubs against global syms. */ |
3442 | unsigned long stub_globals; | |
3443 | ||
ad8e1ba5 | 3444 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3445 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3446 | |
4c52953f AM |
3447 | /* Support for multiple toc sections. */ |
3448 | unsigned int no_multi_toc:1; | |
3449 | unsigned int multi_toc_needed:1; | |
3450 | ||
5d1634d7 | 3451 | /* Set on error. */ |
99877b66 | 3452 | unsigned int stub_error:1; |
721956f4 | 3453 | |
99877b66 AM |
3454 | /* Temp used by ppc64_elf_check_directives. */ |
3455 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3456 | |
3457 | /* Incremented every time we size stubs. */ | |
3458 | unsigned int stub_iteration; | |
5d1634d7 | 3459 | |
ec338859 AM |
3460 | /* Small local sym to section mapping cache. */ |
3461 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3462 | }; |
3463 | ||
4c52953f AM |
3464 | /* Rename some of the generic section flags to better document how they |
3465 | are used here. */ | |
3466 | #define has_toc_reloc has_gp_reloc | |
3467 | #define makes_toc_func_call need_finalize_relax | |
3468 | #define call_check_in_progress reloc_done | |
3469 | ||
65f38f15 AM |
3470 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3471 | ||
3472 | #define ppc_hash_table(p) \ | |
3473 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3474 | ||
721956f4 AM |
3475 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3476 | ((struct ppc_stub_hash_entry *) \ | |
3477 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3478 | ||
3479 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3480 | ((struct ppc_branch_hash_entry *) \ | |
3481 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3482 | ||
3483 | /* Create an entry in the stub hash table. */ | |
3484 | ||
3485 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3486 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3487 | struct bfd_hash_table *table, | |
3488 | const char *string) | |
721956f4 AM |
3489 | { |
3490 | /* Allocate the structure if it has not already been allocated by a | |
3491 | subclass. */ | |
3492 | if (entry == NULL) | |
3493 | { | |
3494 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3495 | if (entry == NULL) | |
3496 | return entry; | |
3497 | } | |
3498 | ||
3499 | /* Call the allocation method of the superclass. */ | |
3500 | entry = bfd_hash_newfunc (entry, table, string); | |
3501 | if (entry != NULL) | |
3502 | { | |
3503 | struct ppc_stub_hash_entry *eh; | |
3504 | ||
3505 | /* Initialize the local fields. */ | |
3506 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3507 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3508 | eh->stub_sec = NULL; |
3509 | eh->stub_offset = 0; | |
3510 | eh->target_value = 0; | |
3511 | eh->target_section = NULL; | |
721956f4 AM |
3512 | eh->h = NULL; |
3513 | eh->id_sec = NULL; | |
3514 | } | |
3515 | ||
3516 | return entry; | |
3517 | } | |
3518 | ||
3519 | /* Create an entry in the branch hash table. */ | |
3520 | ||
3521 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3522 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3523 | struct bfd_hash_table *table, | |
3524 | const char *string) | |
721956f4 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_branch_hash_entry)); | |
3531 | if (entry == NULL) | |
3532 | return entry; | |
3533 | } | |
3534 | ||
3535 | /* Call the allocation method of the superclass. */ | |
3536 | entry = bfd_hash_newfunc (entry, table, string); | |
3537 | if (entry != NULL) | |
3538 | { | |
3539 | struct ppc_branch_hash_entry *eh; | |
3540 | ||
3541 | /* Initialize the local fields. */ | |
3542 | eh = (struct ppc_branch_hash_entry *) entry; | |
3543 | eh->offset = 0; | |
3544 | eh->iter = 0; | |
3545 | } | |
3546 | ||
3547 | return entry; | |
3548 | } | |
3549 | ||
65f38f15 AM |
3550 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3551 | ||
3552 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3553 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3554 | struct bfd_hash_table *table, | |
3555 | const char *string) | |
65f38f15 AM |
3556 | { |
3557 | /* Allocate the structure if it has not already been allocated by a | |
3558 | subclass. */ | |
3559 | if (entry == NULL) | |
3560 | { | |
3561 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3562 | if (entry == NULL) | |
3563 | return entry; | |
3564 | } | |
3565 | ||
3566 | /* Call the allocation method of the superclass. */ | |
3567 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3568 | if (entry != NULL) | |
3569 | { | |
3570 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3571 | ||
b3fac117 | 3572 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3573 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3574 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3575 | ||
3576 | /* When making function calls, old ABI code references function entry | |
3577 | points (dot symbols), while new ABI code references the function | |
3578 | descriptor symbol. We need to make any combination of reference and | |
3579 | definition work together, without breaking archive linking. | |
3580 | ||
3581 | For a defined function "foo" and an undefined call to "bar": | |
3582 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3583 | "bar" too). | |
3584 | A new object defines "foo" and references "bar". | |
3585 | ||
3586 | A new object thus has no problem with its undefined symbols being | |
3587 | satisfied by definitions in an old object. On the other hand, the | |
3588 | old object won't have ".bar" satisfied by a new object. | |
3589 | ||
3590 | Keep a list of newly added dot-symbols. */ | |
3591 | ||
3592 | if (string[0] == '.') | |
3593 | { | |
3594 | struct ppc_link_hash_table *htab; | |
3595 | ||
3596 | htab = (struct ppc_link_hash_table *) table; | |
3597 | eh->u.next_dot_sym = htab->dot_syms; | |
3598 | htab->dot_syms = eh; | |
3599 | } | |
65f38f15 AM |
3600 | } |
3601 | ||
3602 | return entry; | |
3603 | } | |
3604 | ||
3605 | /* Create a ppc64 ELF linker hash table. */ | |
3606 | ||
3607 | static struct bfd_link_hash_table * | |
4ce794b7 | 3608 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3609 | { |
3610 | struct ppc_link_hash_table *htab; | |
3611 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3612 | ||
4ce794b7 | 3613 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3614 | if (htab == NULL) |
3615 | return NULL; | |
3616 | ||
66eb6687 AM |
3617 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3618 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3619 | { |
e2d34d7d | 3620 | free (htab); |
65f38f15 AM |
3621 | return NULL; |
3622 | } | |
3623 | ||
721956f4 | 3624 | /* Init the stub hash table too. */ |
66eb6687 AM |
3625 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3626 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3627 | return NULL; |
3628 | ||
3629 | /* And the branch hash table. */ | |
66eb6687 AM |
3630 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3631 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3632 | return NULL; |
3633 | ||
3254fd24 AM |
3634 | /* Initializing two fields of the union is just cosmetic. We really |
3635 | only care about glist, but when compiled on a 32-bit host the | |
3636 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3637 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3638 | htab->elf.init_got_refcount.refcount = 0; |
3639 | htab->elf.init_got_refcount.glist = NULL; | |
3640 | htab->elf.init_plt_refcount.refcount = 0; | |
3641 | htab->elf.init_plt_refcount.glist = NULL; | |
3642 | htab->elf.init_got_offset.offset = 0; | |
3643 | htab->elf.init_got_offset.glist = NULL; | |
3644 | htab->elf.init_plt_offset.offset = 0; | |
3645 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3646 | |
65f38f15 AM |
3647 | return &htab->elf.root; |
3648 | } | |
3649 | ||
721956f4 AM |
3650 | /* Free the derived linker hash table. */ |
3651 | ||
3652 | static void | |
4ce794b7 | 3653 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3654 | { |
3655 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3656 | ||
3657 | bfd_hash_table_free (&ret->stub_hash_table); | |
3658 | bfd_hash_table_free (&ret->branch_hash_table); | |
3659 | _bfd_generic_link_hash_table_free (hash); | |
3660 | } | |
3661 | ||
e717da7e AM |
3662 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3663 | ||
3664 | void | |
3665 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3666 | { | |
3667 | struct ppc_link_hash_table *htab; | |
3668 | ||
3669 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3670 | ||
3671 | /* Always hook our dynamic sections into the first bfd, which is the | |
3672 | linker created stub bfd. This ensures that the GOT header is at | |
3673 | the start of the output TOC section. */ | |
3674 | htab = ppc_hash_table (info); | |
3675 | htab->stub_bfd = abfd; | |
3676 | htab->elf.dynobj = abfd; | |
3677 | } | |
3678 | ||
721956f4 AM |
3679 | /* Build a name for an entry in the stub hash table. */ |
3680 | ||
3681 | static char * | |
4ce794b7 AM |
3682 | ppc_stub_name (const asection *input_section, |
3683 | const asection *sym_sec, | |
3684 | const struct ppc_link_hash_entry *h, | |
3685 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3686 | { |
3687 | char *stub_name; | |
3688 | bfd_size_type len; | |
3689 | ||
3690 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3691 | offsets from a sym as a branch target? In fact, we could | |
3692 | probably assume the addend is always zero. */ | |
3693 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3694 | ||
3695 | if (h) | |
3696 | { | |
3697 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3698 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3699 | if (stub_name == NULL) |
3700 | return stub_name; | |
3701 | ||
3702 | sprintf (stub_name, "%08x.%s+%x", | |
3703 | input_section->id & 0xffffffff, | |
3704 | h->elf.root.root.string, | |
3705 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3706 | } |
3707 | else | |
3708 | { | |
ad8e1ba5 | 3709 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3710 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3711 | if (stub_name == NULL) |
3712 | return stub_name; | |
3713 | ||
3714 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3715 | input_section->id & 0xffffffff, | |
3716 | sym_sec->id & 0xffffffff, | |
3717 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3718 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3719 | } |
ee75fd95 AM |
3720 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3721 | stub_name[len - 2] = 0; | |
721956f4 AM |
3722 | return stub_name; |
3723 | } | |
3724 | ||
3725 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3726 | creating the stub name takes a bit of time. */ | |
3727 | ||
3728 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3729 | ppc_get_stub_entry (const asection *input_section, |
3730 | const asection *sym_sec, | |
039b3fef | 3731 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3732 | const Elf_Internal_Rela *rel, |
3733 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3734 | { |
3735 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3736 | const asection *id_sec; |
3737 | ||
3738 | /* If this input section is part of a group of sections sharing one | |
3739 | stub section, then use the id of the first section in the group. | |
3740 | Stub names need to include a section id, as there may well be | |
3741 | more than one stub used to reach say, printf, and we need to | |
3742 | distinguish between them. */ | |
3743 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3744 | ||
b3fac117 AM |
3745 | if (h != NULL && h->u.stub_cache != NULL |
3746 | && h->u.stub_cache->h == h | |
3747 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3748 | { |
b3fac117 | 3749 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3750 | } |
3751 | else | |
3752 | { | |
3753 | char *stub_name; | |
3754 | ||
3755 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3756 | if (stub_name == NULL) | |
3757 | return NULL; | |
3758 | ||
3759 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3760 | stub_name, FALSE, FALSE); |
721956f4 | 3761 | if (h != NULL) |
b3fac117 | 3762 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3763 | |
3764 | free (stub_name); | |
3765 | } | |
3766 | ||
3767 | return stub_entry; | |
3768 | } | |
3769 | ||
3770 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3771 | stub entry are initialised. */ | |
3772 | ||
3773 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3774 | ppc_add_stub (const char *stub_name, |
3775 | asection *section, | |
3776 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3777 | { |
3778 | asection *link_sec; | |
3779 | asection *stub_sec; | |
3780 | struct ppc_stub_hash_entry *stub_entry; | |
3781 | ||
3782 | link_sec = htab->stub_group[section->id].link_sec; | |
3783 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3784 | if (stub_sec == NULL) | |
3785 | { | |
3786 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3787 | if (stub_sec == NULL) | |
3788 | { | |
d4c88bbb | 3789 | size_t namelen; |
721956f4 AM |
3790 | bfd_size_type len; |
3791 | char *s_name; | |
3792 | ||
d4c88bbb AM |
3793 | namelen = strlen (link_sec->name); |
3794 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3795 | s_name = bfd_alloc (htab->stub_bfd, len); |
3796 | if (s_name == NULL) | |
3797 | return NULL; | |
3798 | ||
d4c88bbb AM |
3799 | memcpy (s_name, link_sec->name, namelen); |
3800 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3801 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3802 | if (stub_sec == NULL) | |
3803 | return NULL; | |
3804 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3805 | } | |
3806 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3807 | } | |
3808 | ||
3809 | /* Enter this entry into the linker stub hash table. */ | |
3810 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3811 | TRUE, FALSE); |
721956f4 AM |
3812 | if (stub_entry == NULL) |
3813 | { | |
d003868e AM |
3814 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3815 | section->owner, stub_name); | |
721956f4 AM |
3816 | return NULL; |
3817 | } | |
3818 | ||
3819 | stub_entry->stub_sec = stub_sec; | |
3820 | stub_entry->stub_offset = 0; | |
3821 | stub_entry->id_sec = link_sec; | |
3822 | return stub_entry; | |
3823 | } | |
3824 | ||
82bd7b59 AM |
3825 | /* Create sections for linker generated code. */ |
3826 | ||
b34976b6 | 3827 | static bfd_boolean |
4ce794b7 | 3828 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3829 | { |
3830 | struct ppc_link_hash_table *htab; | |
3831 | flagword flags; | |
3832 | ||
3833 | htab = ppc_hash_table (info); | |
3834 | ||
3835 | /* Create .sfpr for code to save and restore fp regs. */ | |
3836 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3837 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3838 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3839 | flags); | |
82bd7b59 | 3840 | if (htab->sfpr == NULL |
82bd7b59 | 3841 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3842 | return FALSE; |
82bd7b59 | 3843 | |
721956f4 | 3844 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3845 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3846 | flags); | |
4ce794b7 | 3847 | if (htab->glink == NULL |
ee4bf8d2 | 3848 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 3849 | return FALSE; |
82bd7b59 | 3850 | |
c456f082 | 3851 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
3852 | flags = (SEC_ALLOC | SEC_LOAD |
3853 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3854 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3855 | flags); | |
4ce794b7 | 3856 | if (htab->brlt == NULL |
4ce794b7 | 3857 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3858 | return FALSE; |
721956f4 | 3859 | |
e4e0193e | 3860 | if (!info->shared) |
c456f082 AM |
3861 | return TRUE; |
3862 | ||
e4e0193e AM |
3863 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
3864 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3865 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
3866 | ".rela.branch_lt", | |
3867 | flags); | |
c456f082 AM |
3868 | if (!htab->relbrlt |
3869 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3870 | return FALSE; | |
3871 | ||
b34976b6 | 3872 | return TRUE; |
82bd7b59 AM |
3873 | } |
3874 | ||
e717da7e AM |
3875 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3876 | not already done. */ | |
65f38f15 | 3877 | |
b34976b6 | 3878 | static bfd_boolean |
e717da7e | 3879 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3880 | { |
e717da7e AM |
3881 | asection *got, *relgot; |
3882 | flagword flags; | |
3883 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3884 | |
0ffa91dd NC |
3885 | if (! is_ppc64_elf_target (abfd->xvec)) |
3886 | return FALSE; | |
3887 | ||
4ce794b7 | 3888 | if (!htab->got) |
e717da7e AM |
3889 | { |
3890 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3891 | return FALSE; | |
3892 | ||
3893 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3894 | if (!htab->got) | |
3895 | abort (); | |
3896 | } | |
3897 | ||
3898 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3899 | | SEC_LINKER_CREATED); | |
3900 | ||
c456f082 | 3901 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3902 | if (!got |
e717da7e AM |
3903 | || !bfd_set_section_alignment (abfd, got, 3)) |
3904 | return FALSE; | |
65f38f15 | 3905 | |
c456f082 AM |
3906 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3907 | flags | SEC_READONLY); | |
e717da7e | 3908 | if (!relgot |
e717da7e | 3909 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3910 | return FALSE; |
e717da7e AM |
3911 | |
3912 | ppc64_elf_tdata (abfd)->got = got; | |
3913 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3914 | return TRUE; |
65f38f15 | 3915 | } |
5bd4f169 | 3916 | |
82bd7b59 | 3917 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3918 | |
b34976b6 | 3919 | static bfd_boolean |
4ce794b7 | 3920 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3921 | { |
65f38f15 | 3922 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3923 | |
65f38f15 | 3924 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3925 | return FALSE; |
65f38f15 | 3926 | |
e717da7e AM |
3927 | htab = ppc_hash_table (info); |
3928 | if (!htab->got) | |
3929 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3930 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3931 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3932 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3933 | if (!info->shared) |
4ce794b7 | 3934 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3935 | |
e717da7e | 3936 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3937 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3938 | abort (); |
3939 | ||
b34976b6 | 3940 | return TRUE; |
5bd4f169 AM |
3941 | } |
3942 | ||
40d16e0b AM |
3943 | /* Merge PLT info on FROM with that on TO. */ |
3944 | ||
3945 | static void | |
3946 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3947 | struct ppc_link_hash_entry *to) | |
3948 | { | |
3949 | if (from->elf.plt.plist != NULL) | |
3950 | { | |
3951 | if (to->elf.plt.plist != NULL) | |
3952 | { | |
3953 | struct plt_entry **entp; | |
3954 | struct plt_entry *ent; | |
3955 | ||
3956 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3957 | { | |
3958 | struct plt_entry *dent; | |
3959 | ||
3960 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3961 | if (dent->addend == ent->addend) | |
3962 | { | |
3963 | dent->plt.refcount += ent->plt.refcount; | |
3964 | *entp = ent->next; | |
3965 | break; | |
3966 | } | |
3967 | if (dent == NULL) | |
3968 | entp = &ent->next; | |
3969 | } | |
3970 | *entp = to->elf.plt.plist; | |
3971 | } | |
3972 | ||
3973 | to->elf.plt.plist = from->elf.plt.plist; | |
3974 | from->elf.plt.plist = NULL; | |
3975 | } | |
3976 | } | |
3977 | ||
65f38f15 AM |
3978 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3979 | ||
3980 | static void | |
fcfa13d2 AM |
3981 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3982 | struct elf_link_hash_entry *dir, | |
3983 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3984 | { |
3985 | struct ppc_link_hash_entry *edir, *eind; | |
3986 | ||
3987 | edir = (struct ppc_link_hash_entry *) dir; | |
3988 | eind = (struct ppc_link_hash_entry *) ind; | |
3989 | ||
411e1bfb | 3990 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3991 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3992 | { |
bbd7ec4a AM |
3993 | if (edir->dyn_relocs != NULL) |
3994 | { | |
3995 | struct ppc_dyn_relocs **pp; | |
3996 | struct ppc_dyn_relocs *p; | |
3997 | ||
fcfa13d2 | 3998 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3999 | list. Merge any entries against the same section. */ |
4000 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4001 | { | |
4002 | struct ppc_dyn_relocs *q; | |
4003 | ||
4004 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4005 | if (q->sec == p->sec) | |
4006 | { | |
4007 | q->pc_count += p->pc_count; | |
4008 | q->count += p->count; | |
4009 | *pp = p->next; | |
4010 | break; | |
4011 | } | |
4012 | if (q == NULL) | |
4013 | pp = &p->next; | |
4014 | } | |
4015 | *pp = edir->dyn_relocs; | |
4016 | } | |
4017 | ||
65f38f15 AM |
4018 | edir->dyn_relocs = eind->dyn_relocs; |
4019 | eind->dyn_relocs = NULL; | |
4020 | } | |
65f38f15 | 4021 | |
6349e628 AM |
4022 | edir->is_func |= eind->is_func; |
4023 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4024 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4025 | |
81848ca0 | 4026 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4027 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4028 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4029 | if (!(ELIMINATE_COPY_RELOCS |
4030 | && eind->elf.root.type != bfd_link_hash_indirect | |
4031 | && edir->elf.dynamic_adjusted)) | |
4032 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4033 | |
f5385ebf AM |
4034 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4035 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4036 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4037 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4038 | |
4039 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4040 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4041 | return; | |
4042 | ||
81848ca0 AM |
4043 | /* Copy over got entries that we may have already seen to the |
4044 | symbol which just became indirect. */ | |
411e1bfb AM |
4045 | if (eind->elf.got.glist != NULL) |
4046 | { | |
4047 | if (edir->elf.got.glist != NULL) | |
4048 | { | |
4049 | struct got_entry **entp; | |
4050 | struct got_entry *ent; | |
4051 | ||
4052 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4053 | { | |
4054 | struct got_entry *dent; | |
4055 | ||
4056 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4057 | if (dent->addend == ent->addend | |
e717da7e | 4058 | && dent->owner == ent->owner |
411e1bfb AM |
4059 | && dent->tls_type == ent->tls_type) |
4060 | { | |
4061 | dent->got.refcount += ent->got.refcount; | |
4062 | *entp = ent->next; | |
4063 | break; | |
4064 | } | |
4065 | if (dent == NULL) | |
4066 | entp = &ent->next; | |
4067 | } | |
4068 | *entp = edir->elf.got.glist; | |
4069 | } | |
4070 | ||
4071 | edir->elf.got.glist = eind->elf.got.glist; | |
4072 | eind->elf.got.glist = NULL; | |
4073 | } | |
4074 | ||
4075 | /* And plt entries. */ | |
40d16e0b | 4076 | move_plt_plist (eind, edir); |
411e1bfb | 4077 | |
fcfa13d2 | 4078 | if (eind->elf.dynindx != -1) |
411e1bfb | 4079 | { |
fcfa13d2 AM |
4080 | if (edir->elf.dynindx != -1) |
4081 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4082 | edir->elf.dynstr_index); | |
411e1bfb AM |
4083 | edir->elf.dynindx = eind->elf.dynindx; |
4084 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4085 | eind->elf.dynindx = -1; | |
4086 | eind->elf.dynstr_index = 0; | |
4087 | } | |
411e1bfb AM |
4088 | } |
4089 | ||
8387904d AM |
4090 | /* Find the function descriptor hash entry from the given function code |
4091 | hash entry FH. Link the entries via their OH fields. */ | |
4092 | ||
4093 | static struct ppc_link_hash_entry * | |
4094 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4095 | { | |
4096 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4097 | ||
4098 | if (fdh == NULL) | |
4099 | { | |
4100 | const char *fd_name = fh->elf.root.root.string + 1; | |
4101 | ||
4102 | fdh = (struct ppc_link_hash_entry *) | |
4103 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4104 | if (fdh != NULL) | |
4105 | { | |
4106 | fdh->is_func_descriptor = 1; | |
4107 | fdh->oh = fh; | |
4108 | fh->is_func = 1; | |
4109 | fh->oh = fdh; | |
4110 | } | |
4111 | } | |
4112 | ||
4113 | return fdh; | |
4114 | } | |
4115 | ||
bb700d78 AM |
4116 | /* Make a fake function descriptor sym for the code sym FH. */ |
4117 | ||
4118 | static struct ppc_link_hash_entry * | |
4119 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4120 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4121 | { |
4122 | bfd *abfd; | |
4123 | asymbol *newsym; | |
4124 | struct bfd_link_hash_entry *bh; | |
4125 | struct ppc_link_hash_entry *fdh; | |
4126 | ||
4127 | abfd = fh->elf.root.u.undef.abfd; | |
4128 | newsym = bfd_make_empty_symbol (abfd); | |
4129 | newsym->name = fh->elf.root.root.string + 1; | |
4130 | newsym->section = bfd_und_section_ptr; | |
4131 | newsym->value = 0; | |
908b32fc | 4132 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4133 | |
4134 | bh = NULL; | |
4135 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4136 | newsym->flags, newsym->section, | |
4137 | newsym->value, NULL, FALSE, FALSE, | |
4138 | &bh)) | |
4139 | return NULL; | |
4140 | ||
4141 | fdh = (struct ppc_link_hash_entry *) bh; | |
4142 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4143 | fdh->fake = 1; |
4144 | fdh->is_func_descriptor = 1; | |
4145 | fdh->oh = fh; | |
4146 | fh->is_func = 1; | |
4147 | fh->oh = fdh; | |
bb700d78 AM |
4148 | return fdh; |
4149 | } | |
4150 | ||
8387904d AM |
4151 | /* Fix function descriptor symbols defined in .opd sections to be |
4152 | function type. */ | |
555cd476 AM |
4153 | |
4154 | static bfd_boolean | |
b3fac117 | 4155 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4156 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4157 | Elf_Internal_Sym *isym, | |
b3fac117 | 4158 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4159 | flagword *flags ATTRIBUTE_UNUSED, |
4160 | asection **sec, | |
4161 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4162 | { | |
8843416a AM |
4163 | if (*sec != NULL |
4164 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4165 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4166 | |
555cd476 AM |
4167 | return TRUE; |
4168 | } | |
4169 | ||
8387904d | 4170 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4171 | inclusion of a new ABI object archive that defines "bar". |
4172 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4173 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4174 | |
4175 | static struct elf_link_hash_entry * | |
4176 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4177 | struct bfd_link_info *info, | |
4178 | const char *name) | |
4179 | { | |
4180 | struct elf_link_hash_entry *h; | |
4181 | char *dot_name; | |
4182 | size_t len; | |
4183 | ||
4184 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4185 | if (h != NULL |
4186 | /* Don't return this sym if it is a fake function descriptor | |
4187 | created by add_symbol_adjust. */ | |
4188 | && !(h->root.type == bfd_link_hash_undefweak | |
4189 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4190 | return h; |
4191 | ||
4192 | if (name[0] == '.') | |
4193 | return h; | |
4194 | ||
4195 | len = strlen (name); | |
4196 | dot_name = bfd_alloc (abfd, len + 2); | |
4197 | if (dot_name == NULL) | |
4198 | return (struct elf_link_hash_entry *) 0 - 1; | |
4199 | dot_name[0] = '.'; | |
4200 | memcpy (dot_name + 1, name, len + 1); | |
4201 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4202 | bfd_release (abfd, dot_name); | |
4203 | return h; | |
4204 | } | |
4205 | ||
4206 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4207 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4208 | are made weak. This stops later archive searches from including an | |
4209 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4210 | prevents the linker complaining about undefined symbols. |
4211 | We also check and correct mismatched symbol visibility here. The | |
4212 | most restrictive visibility of the function descriptor and the | |
4213 | function entry symbol is used. */ | |
8387904d AM |
4214 | |
4215 | static bfd_boolean | |
b3fac117 | 4216 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4217 | { |
8387904d AM |
4218 | struct ppc_link_hash_table *htab; |
4219 | struct ppc_link_hash_entry *fdh; | |
4220 | ||
b3fac117 | 4221 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4222 | return TRUE; |
4223 | ||
b3fac117 AM |
4224 | if (eh->elf.root.type == bfd_link_hash_warning) |
4225 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4226 | |
b3fac117 AM |
4227 | if (eh->elf.root.root.string[0] != '.') |
4228 | abort (); | |
8387904d | 4229 | |
b3fac117 | 4230 | htab = ppc_hash_table (info); |
99877b66 | 4231 | fdh = get_fdh (eh, htab); |
bb700d78 | 4232 | if (fdh == NULL |
b3fac117 | 4233 | && !info->relocatable |
bb700d78 AM |
4234 | && (eh->elf.root.type == bfd_link_hash_undefined |
4235 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4236 | && eh->elf.ref_regular) | |
4237 | { | |
4238 | /* Make an undefweak function descriptor sym, which is enough to | |
4239 | pull in an --as-needed shared lib, but won't cause link | |
4240 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4241 | fdh = make_fdh (info, eh); |
bb700d78 | 4242 | if (fdh == NULL) |
b3fac117 | 4243 | return FALSE; |
bb700d78 AM |
4244 | else |
4245 | fdh->elf.ref_regular = 1; | |
4246 | } | |
e87d886e | 4247 | else if (fdh != NULL) |
8387904d | 4248 | { |
35b0ce59 AM |
4249 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4250 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4251 | if (entry_vis < descr_vis) | |
4252 | fdh->elf.other += entry_vis - descr_vis; | |
4253 | else if (entry_vis > descr_vis) | |
4254 | eh->elf.other += descr_vis - entry_vis; | |
4255 | ||
e87d886e AM |
4256 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4257 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4258 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4259 | { |
4260 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4261 | eh->was_undefined = 1; | |
4262 | htab->twiddled_syms = 1; | |
4263 | } | |
8387904d | 4264 | } |
99877b66 | 4265 | |
8387904d AM |
4266 | return TRUE; |
4267 | } | |
4268 | ||
b3fac117 AM |
4269 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4270 | ||
8387904d | 4271 | static bfd_boolean |
b3fac117 | 4272 | ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4273 | { |
99877b66 | 4274 | struct ppc_link_hash_table *htab; |
b3fac117 | 4275 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4276 | |
99877b66 | 4277 | htab = ppc_hash_table (info); |
ee75fd95 | 4278 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4279 | return TRUE; |
4280 | ||
b3fac117 AM |
4281 | if (is_ppc64_elf_target (ibfd->xvec)) |
4282 | { | |
4283 | p = &htab->dot_syms; | |
4284 | while ((eh = *p) != NULL) | |
4285 | { | |
4286 | *p = NULL; | |
4287 | if (!add_symbol_adjust (eh, info)) | |
4288 | return FALSE; | |
4289 | p = &eh->u.next_dot_sym; | |
4290 | } | |
4291 | } | |
4292 | ||
4293 | /* Clear the list for non-ppc64 input files. */ | |
4294 | p = &htab->dot_syms; | |
4295 | while ((eh = *p) != NULL) | |
4296 | { | |
4297 | *p = NULL; | |
4298 | p = &eh->u.next_dot_sym; | |
4299 | } | |
99877b66 AM |
4300 | |
4301 | /* We need to fix the undefs list for any syms we have twiddled to | |
4302 | undef_weak. */ | |
4303 | if (htab->twiddled_syms) | |
4304 | { | |
77cfaee6 | 4305 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4306 | htab->twiddled_syms = 0; |
4307 | } | |
b3fac117 | 4308 | return TRUE; |
8387904d AM |
4309 | } |
4310 | ||
97fed1c9 JJ |
4311 | /* Undo hash table changes when an --as-needed input file is determined |
4312 | not to be needed. */ | |
4313 | ||
4314 | static bfd_boolean | |
4315 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4316 | struct bfd_link_info *info) | |
4317 | { | |
4318 | ppc_hash_table (info)->dot_syms = NULL; | |
4319 | return TRUE; | |
4320 | } | |
4321 | ||
411e1bfb | 4322 | static bfd_boolean |
4ce794b7 AM |
4323 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4324 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4325 | { |
4326 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4327 | char *local_got_tls_masks; |
411e1bfb AM |
4328 | |
4329 | if (local_got_ents == NULL) | |
4330 | { | |
4331 | bfd_size_type size = symtab_hdr->sh_info; | |
4332 | ||
e7b938ca | 4333 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4334 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4335 | if (local_got_ents == NULL) |
4336 | return FALSE; | |
4337 | elf_local_got_ents (abfd) = local_got_ents; | |
4338 | } | |
4339 | ||
4340 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4341 | { | |
4342 | struct got_entry *ent; | |
4343 | ||
4344 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4345 | if (ent->addend == r_addend |
4346 | && ent->owner == abfd | |
4347 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4348 | break; |
4349 | if (ent == NULL) | |
4350 | { | |
4351 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4352 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4353 | if (ent == NULL) |
4354 | return FALSE; | |
4355 | ent->next = local_got_ents[r_symndx]; | |
4356 | ent->addend = r_addend; | |
e717da7e | 4357 | ent->owner = abfd; |
411e1bfb AM |
4358 | ent->tls_type = tls_type; |
4359 | ent->got.refcount = 0; | |
4360 | local_got_ents[r_symndx] = ent; | |
4361 | } | |
4362 | ent->got.refcount += 1; | |
4363 | } | |
4364 | ||
e7b938ca AM |
4365 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4366 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4367 | return TRUE; |
65f38f15 AM |
4368 | } |
4369 | ||
411e1bfb | 4370 | static bfd_boolean |
4ce794b7 | 4371 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4372 | { |
411e1bfb | 4373 | struct plt_entry *ent; |
1e2f5b6e | 4374 | |
411e1bfb AM |
4375 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4376 | if (ent->addend == addend) | |
4377 | break; | |
4378 | if (ent == NULL) | |
1e2f5b6e | 4379 | { |
411e1bfb | 4380 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4381 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4382 | if (ent == NULL) |
4383 | return FALSE; | |
4384 | ent->next = eh->elf.plt.plist; | |
4385 | ent->addend = addend; | |
4386 | ent->plt.refcount = 0; | |
4387 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4388 | } |
411e1bfb | 4389 | ent->plt.refcount += 1; |
f5385ebf | 4390 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4391 | if (eh->elf.root.root.string[0] == '.' |
4392 | && eh->elf.root.root.string[1] != '\0') | |
4393 | eh->is_func = 1; | |
b34976b6 | 4394 | return TRUE; |
1e2f5b6e AM |
4395 | } |
4396 | ||
5bd4f169 | 4397 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4398 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4399 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4400 | |
b34976b6 | 4401 | static bfd_boolean |
4ce794b7 AM |
4402 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4403 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4404 | { |
65f38f15 | 4405 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4406 | Elf_Internal_Shdr *symtab_hdr; |
4407 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4408 | const Elf_Internal_Rela *rel; | |
4409 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4410 | asection *sreloc; |
1e2f5b6e | 4411 | asection **opd_sym_map; |
5bd4f169 | 4412 | |
1049f94e | 4413 | if (info->relocatable) |
b34976b6 | 4414 | return TRUE; |
5bd4f169 | 4415 | |
680a3378 AM |
4416 | /* Don't do anything special with non-loaded, non-alloced sections. |
4417 | In particular, any relocs in such sections should not affect GOT | |
4418 | and PLT reference counting (ie. we don't allow them to create GOT | |
4419 | or PLT entries), there's no possibility or desire to optimize TLS | |
4420 | relocs, and there's not much point in propagating relocs to shared | |
4421 | libs that the dynamic linker won't relocate. */ | |
4422 | if ((sec->flags & SEC_ALLOC) == 0) | |
4423 | return TRUE; | |
4424 | ||
0ffa91dd NC |
4425 | BFD_ASSERT (is_ppc64_elf_target (abfd->xvec)); |
4426 | ||
65f38f15 | 4427 | htab = ppc_hash_table (info); |
0ffa91dd | 4428 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 AM |
4429 | |
4430 | sym_hashes = elf_sym_hashes (abfd); | |
4431 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4432 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4433 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4434 | |
4435 | sreloc = NULL; | |
1e2f5b6e AM |
4436 | opd_sym_map = NULL; |
4437 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4438 | { | |
4439 | /* Garbage collection needs some extra help with .opd sections. | |
4440 | We don't want to necessarily keep everything referenced by | |
4441 | relocs in .opd, as that would keep all functions. Instead, | |
4442 | if we reference an .opd symbol (a function descriptor), we | |
4443 | want to keep the function code symbol's section. This is | |
4444 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4445 | information about the associated function section. */ |
1e2f5b6e AM |
4446 | bfd_size_type amt; |
4447 | ||
74f0fb50 | 4448 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4449 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4450 | if (opd_sym_map == NULL) |
b34976b6 | 4451 | return FALSE; |
74f0fb50 | 4452 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4453 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4454 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4455 | } |
5bd4f169 | 4456 | |
82bd7b59 AM |
4457 | if (htab->sfpr == NULL |
4458 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4459 | return FALSE; |
82bd7b59 | 4460 | |
5bd4f169 AM |
4461 | rel_end = relocs + sec->reloc_count; |
4462 | for (rel = relocs; rel < rel_end; rel++) | |
4463 | { | |
4464 | unsigned long r_symndx; | |
4465 | struct elf_link_hash_entry *h; | |
04c9666a | 4466 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4467 | int tls_type = 0; |
7c8fe5c4 | 4468 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4469 | |
4470 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4471 | if (r_symndx < symtab_hdr->sh_info) | |
4472 | h = NULL; | |
4473 | else | |
973a3492 L |
4474 | { |
4475 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4476 | while (h->root.type == bfd_link_hash_indirect | |
4477 | || h->root.type == bfd_link_hash_warning) | |
4478 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4479 | } | |
5bd4f169 | 4480 | |
4ce794b7 | 4481 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4482 | switch (r_type) |
5bd4f169 | 4483 | { |
411e1bfb AM |
4484 | case R_PPC64_GOT_TLSLD16: |
4485 | case R_PPC64_GOT_TLSLD16_LO: | |
4486 | case R_PPC64_GOT_TLSLD16_HI: | |
4487 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4488 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4489 | goto dogottls; |
4490 | ||
4491 | case R_PPC64_GOT_TLSGD16: | |
4492 | case R_PPC64_GOT_TLSGD16_LO: | |
4493 | case R_PPC64_GOT_TLSGD16_HI: | |
4494 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4495 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4496 | goto dogottls; |
4497 | ||
4498 | case R_PPC64_GOT_TPREL16_DS: | |
4499 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4500 | case R_PPC64_GOT_TPREL16_HI: | |
4501 | case R_PPC64_GOT_TPREL16_HA: | |
4502 | if (info->shared) | |
4503 | info->flags |= DF_STATIC_TLS; | |
4504 | tls_type = TLS_TLS | TLS_TPREL; | |
4505 | goto dogottls; | |
4506 | ||
4507 | case R_PPC64_GOT_DTPREL16_DS: | |
4508 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4509 | case R_PPC64_GOT_DTPREL16_HI: | |
4510 | case R_PPC64_GOT_DTPREL16_HA: | |
4511 | tls_type = TLS_TLS | TLS_DTPREL; | |
4512 | dogottls: | |
4513 | sec->has_tls_reloc = 1; | |
4514 | /* Fall thru */ | |
4515 | ||
5bd4f169 | 4516 | case R_PPC64_GOT16: |
5bd4f169 | 4517 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4518 | case R_PPC64_GOT16_HA: |
4519 | case R_PPC64_GOT16_HI: | |
4520 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4521 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4522 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4523 | sec->has_toc_reloc = 1; |
e717da7e AM |
4524 | if (ppc64_elf_tdata (abfd)->got == NULL |
4525 | && !create_got_section (abfd, info)) | |
b34976b6 | 4526 | return FALSE; |
5bd4f169 AM |
4527 | |
4528 | if (h != NULL) | |
4529 | { | |
411e1bfb AM |
4530 | struct ppc_link_hash_entry *eh; |
4531 | struct got_entry *ent; | |
65f38f15 | 4532 | |
411e1bfb AM |
4533 | eh = (struct ppc_link_hash_entry *) h; |
4534 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4535 | if (ent->addend == rel->r_addend | |
e717da7e | 4536 | && ent->owner == abfd |
411e1bfb AM |
4537 | && ent->tls_type == tls_type) |
4538 | break; | |
4539 | if (ent == NULL) | |
5bd4f169 | 4540 | { |
411e1bfb | 4541 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4542 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4543 | if (ent == NULL) |
b34976b6 | 4544 | return FALSE; |
411e1bfb AM |
4545 | ent->next = eh->elf.got.glist; |
4546 | ent->addend = rel->r_addend; | |
e717da7e | 4547 | ent->owner = abfd; |
411e1bfb AM |
4548 | ent->tls_type = tls_type; |
4549 | ent->got.refcount = 0; | |
4550 | eh->elf.got.glist = ent; | |
5bd4f169 | 4551 | } |
411e1bfb | 4552 | ent->got.refcount += 1; |
e7b938ca | 4553 | eh->tls_mask |= tls_type; |
5bd4f169 | 4554 | } |
411e1bfb AM |
4555 | else |
4556 | /* This is a global offset table entry for a local symbol. */ | |
4557 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4558 | rel->r_addend, tls_type)) | |
4559 | return FALSE; | |
5bd4f169 AM |
4560 | break; |
4561 | ||
5bd4f169 | 4562 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4563 | case R_PPC64_PLT16_HI: |
4564 | case R_PPC64_PLT16_LO: | |
4565 | case R_PPC64_PLT32: | |
4566 | case R_PPC64_PLT64: | |
5bd4f169 | 4567 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4568 | actually build the entry in adjust_dynamic_symbol, |
4569 | because this might be a case of linking PIC code without | |
4570 | linking in any dynamic objects, in which case we don't | |
4571 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4572 | if (h == NULL) |
4573 | { | |
4574 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4575 | table entry for a local symbol. */ |
5bd4f169 | 4576 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4577 | return FALSE; |
5bd4f169 | 4578 | } |
411e1bfb AM |
4579 | else |
4580 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4581 | rel->r_addend)) | |
4582 | return FALSE; | |
5bd4f169 AM |
4583 | break; |
4584 | ||
4585 | /* The following relocations don't need to propagate the | |
4586 | relocation if linking a shared object since they are | |
4587 | section relative. */ | |
4588 | case R_PPC64_SECTOFF: | |
4589 | case R_PPC64_SECTOFF_LO: | |
4590 | case R_PPC64_SECTOFF_HI: | |
4591 | case R_PPC64_SECTOFF_HA: | |
4592 | case R_PPC64_SECTOFF_DS: | |
4593 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4594 | case R_PPC64_DTPREL16: |
4595 | case R_PPC64_DTPREL16_LO: | |
4596 | case R_PPC64_DTPREL16_HI: | |
4597 | case R_PPC64_DTPREL16_HA: | |
4598 | case R_PPC64_DTPREL16_DS: | |
4599 | case R_PPC64_DTPREL16_LO_DS: | |
4600 | case R_PPC64_DTPREL16_HIGHER: | |
4601 | case R_PPC64_DTPREL16_HIGHERA: | |
4602 | case R_PPC64_DTPREL16_HIGHEST: | |
4603 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4604 | break; |
4605 | ||
ad8e1ba5 AM |
4606 | /* Nor do these. */ |
4607 | case R_PPC64_TOC16: | |
4608 | case R_PPC64_TOC16_LO: | |
4609 | case R_PPC64_TOC16_HI: | |
4610 | case R_PPC64_TOC16_HA: | |
4611 | case R_PPC64_TOC16_DS: | |
4612 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4613 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4614 | break; |
4615 | ||
5bd4f169 AM |
4616 | /* This relocation describes the C++ object vtable hierarchy. |
4617 | Reconstruct it for later use during GC. */ | |
4618 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4619 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4620 | return FALSE; |
5bd4f169 AM |
4621 | break; |
4622 | ||
4623 | /* This relocation describes which C++ vtable entries are actually | |
4624 | used. Record for later use during GC. */ | |
4625 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
4626 | BFD_ASSERT (h != NULL); |
4627 | if (h != NULL | |
4628 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 4629 | return FALSE; |
5bd4f169 AM |
4630 | break; |
4631 | ||
721956f4 AM |
4632 | case R_PPC64_REL14: |
4633 | case R_PPC64_REL14_BRTAKEN: | |
4634 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4635 | { |
4636 | asection *dest = NULL; | |
4637 | ||
4638 | /* Heuristic: If jumping outside our section, chances are | |
4639 | we are going to need a stub. */ | |
4640 | if (h != NULL) | |
4641 | { | |
4642 | /* If the sym is weak it may be overridden later, so | |
4643 | don't assume we know where a weak sym lives. */ | |
4644 | if (h->root.type == bfd_link_hash_defined) | |
4645 | dest = h->root.u.def.section; | |
4646 | } | |
4647 | else | |
4648 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4649 | sec, r_symndx); | |
4650 | if (dest != sec) | |
7c8fe5c4 | 4651 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4652 | } |
721956f4 AM |
4653 | /* Fall through. */ |
4654 | ||
5d1634d7 | 4655 | case R_PPC64_REL24: |
8387904d | 4656 | if (h != NULL) |
5d1634d7 AM |
4657 | { |
4658 | /* We may need a .plt entry if the function this reloc | |
4659 | refers to is in a shared lib. */ | |
411e1bfb AM |
4660 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4661 | rel->r_addend)) | |
4662 | return FALSE; | |
8387904d AM |
4663 | if (h == &htab->tls_get_addr->elf |
4664 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4665 | sec->has_tls_reloc = 1; |
8387904d | 4666 | else if (htab->tls_get_addr == NULL |
0112cd26 | 4667 | && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr") |
a48ebf4d AM |
4668 | && (h->root.root.string[15] == 0 |
4669 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4670 | { |
8387904d AM |
4671 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4672 | sec->has_tls_reloc = 1; | |
4673 | } | |
4674 | else if (htab->tls_get_addr_fd == NULL | |
0112cd26 | 4675 | && CONST_STRNEQ (h->root.root.string, "__tls_get_addr") |
8387904d AM |
4676 | && (h->root.root.string[14] == 0 |
4677 | || h->root.root.string[14] == '@')) | |
4678 | { | |
4679 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4680 | sec->has_tls_reloc = 1; |
4681 | } | |
4682 | } | |
4683 | break; | |
4684 | ||
4685 | case R_PPC64_TPREL64: | |
4686 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4687 | if (info->shared) | |
4688 | info->flags |= DF_STATIC_TLS; | |
4689 | goto dotlstoc; | |
4690 | ||
4691 | case R_PPC64_DTPMOD64: | |
4692 | if (rel + 1 < rel_end | |
4693 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4694 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4695 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4696 | else |
951fd09b | 4697 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4698 | goto dotlstoc; |
4699 | ||
4700 | case R_PPC64_DTPREL64: | |
4701 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4702 | if (rel != relocs | |
4703 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4704 | && rel[-1].r_offset == rel->r_offset - 8) | |
4705 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4706 | Don't mark with TLS_DTPREL. */ | |
4707 | goto dodyn; | |
4708 | ||
4709 | dotlstoc: | |
4710 | sec->has_tls_reloc = 1; | |
4711 | if (h != NULL) | |
4712 | { | |
4713 | struct ppc_link_hash_entry *eh; | |
4714 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4715 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4716 | } |
4717 | else | |
4718 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4719 | rel->r_addend, tls_type)) | |
4720 | return FALSE; | |
4721 | ||
7c8fe5c4 AM |
4722 | ppc64_sec = ppc64_elf_section_data (sec); |
4723 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4724 | { |
e7b938ca | 4725 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4726 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
7c8fe5c4 AM |
4727 | ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt); |
4728 | if (ppc64_sec->u.t_symndx == NULL) | |
411e1bfb | 4729 | return FALSE; |
7c8fe5c4 AM |
4730 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4731 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4732 | } |
4733 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
7c8fe5c4 | 4734 | ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx; |
951fd09b AM |
4735 | |
4736 | /* Mark the second slot of a GD or LD entry. | |
4737 | -1 to indicate GD and -2 to indicate LD. */ | |
4738 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
7c8fe5c4 | 4739 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4740 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
7c8fe5c4 | 4741 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4742 | goto dodyn; |
4743 | ||
4744 | case R_PPC64_TPREL16: | |
4745 | case R_PPC64_TPREL16_LO: | |
4746 | case R_PPC64_TPREL16_HI: | |
4747 | case R_PPC64_TPREL16_HA: | |
4748 | case R_PPC64_TPREL16_DS: | |
4749 | case R_PPC64_TPREL16_LO_DS: | |
4750 | case R_PPC64_TPREL16_HIGHER: | |
4751 | case R_PPC64_TPREL16_HIGHERA: | |
4752 | case R_PPC64_TPREL16_HIGHEST: | |
4753 | case R_PPC64_TPREL16_HIGHESTA: | |
4754 | if (info->shared) | |
4755 | { | |
4756 | info->flags |= DF_STATIC_TLS; | |
4757 | goto dodyn; | |
5d1634d7 AM |
4758 | } |
4759 | break; | |
4760 | ||
e86ce104 | 4761 | case R_PPC64_ADDR64: |
1e2f5b6e | 4762 | if (opd_sym_map != NULL |
1e2f5b6e | 4763 | && rel + 1 < rel_end |
4ce794b7 | 4764 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4765 | { |
8387904d AM |
4766 | if (h != NULL) |
4767 | { | |
4768 | if (h->root.root.string[0] == '.' | |
4769 | && h->root.root.string[1] != 0 | |
4770 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4771 | ; | |
4772 | else | |
4773 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4774 | } | |
4775 | else | |
4776 | { | |
4777 | asection *s; | |
1e2f5b6e | 4778 | |
8387904d AM |
4779 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4780 | r_symndx); | |
4781 | if (s == NULL) | |
4782 | return FALSE; | |
4783 | else if (s != sec) | |
3f764659 | 4784 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4785 | } |
1e2f5b6e | 4786 | } |
e86ce104 AM |
4787 | /* Fall through. */ |
4788 | ||
04c9666a | 4789 | case R_PPC64_REL30: |
5bd4f169 | 4790 | case R_PPC64_REL32: |
04c9666a | 4791 | case R_PPC64_REL64: |
65f38f15 AM |
4792 | case R_PPC64_ADDR14: |
4793 | case R_PPC64_ADDR14_BRNTAKEN: | |
4794 | case R_PPC64_ADDR14_BRTAKEN: | |
4795 | case R_PPC64_ADDR16: | |
4796 | case R_PPC64_ADDR16_DS: | |
4797 | case R_PPC64_ADDR16_HA: | |
4798 | case R_PPC64_ADDR16_HI: | |
4799 | case R_PPC64_ADDR16_HIGHER: | |
4800 | case R_PPC64_ADDR16_HIGHERA: | |
4801 | case R_PPC64_ADDR16_HIGHEST: | |
4802 | case R_PPC64_ADDR16_HIGHESTA: | |
4803 | case R_PPC64_ADDR16_LO: | |
4804 | case R_PPC64_ADDR16_LO_DS: | |
4805 | case R_PPC64_ADDR24: | |
65f38f15 | 4806 | case R_PPC64_ADDR32: |
65f38f15 AM |
4807 | case R_PPC64_UADDR16: |
4808 | case R_PPC64_UADDR32: | |
4809 | case R_PPC64_UADDR64: | |
5bd4f169 | 4810 | case R_PPC64_TOC: |
81848ca0 AM |
4811 | if (h != NULL && !info->shared) |
4812 | /* We may need a copy reloc. */ | |
f5385ebf | 4813 | h->non_got_ref = 1; |
81848ca0 | 4814 | |
41bd81ab | 4815 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4816 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4817 | break; |
e86ce104 | 4818 | |
65f38f15 AM |
4819 | /* If we are creating a shared library, and this is a reloc |
4820 | against a global symbol, or a non PC relative reloc | |
4821 | against a local symbol, then we need to copy the reloc | |
4822 | into the shared library. However, if we are linking with | |
4823 | -Bsymbolic, we do not need to copy a reloc against a | |
4824 | global symbol which is defined in an object we are | |
4825 | including in the link (i.e., DEF_REGULAR is set). At | |
4826 | this point we have not seen all the input files, so it is | |
4827 | possible that DEF_REGULAR is not set now but will be set | |
4828 | later (it is never cleared). In case of a weak definition, | |
4829 | DEF_REGULAR may be cleared later by a strong definition in | |
4830 | a shared library. We account for that possibility below by | |
f4656909 | 4831 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4832 | table entry. A similar situation occurs when creating |
4833 | shared libraries and symbol visibility changes render the | |
4834 | symbol local. | |
4835 | ||
4836 | If on the other hand, we are creating an executable, we | |
4837 | may need to keep relocations for symbols satisfied by a | |
4838 | dynamic library if we manage to avoid copy relocs for the | |
4839 | symbol. */ | |
411e1bfb | 4840 | dodyn: |
65f38f15 | 4841 | if ((info->shared |
411e1bfb | 4842 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4843 | || (h != NULL |
4844 | && (! info->symbolic | |
4845 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4846 | || !h->def_regular)))) |
f4656909 AM |
4847 | || (ELIMINATE_COPY_RELOCS |
4848 | && !info->shared | |
65f38f15 AM |
4849 | && h != NULL |
4850 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4851 | || !h->def_regular))) |
5bd4f169 | 4852 | { |
ec338859 AM |
4853 | struct ppc_dyn_relocs *p; |
4854 | struct ppc_dyn_relocs **head; | |
4855 | ||
65f38f15 AM |
4856 | /* We must copy these reloc types into the output file. |
4857 | Create a reloc section in dynobj and make room for | |
4858 | this reloc. */ | |
5bd4f169 AM |
4859 | if (sreloc == NULL) |
4860 | { | |
4861 | const char *name; | |
65f38f15 | 4862 | bfd *dynobj; |
5bd4f169 AM |
4863 | |
4864 | name = (bfd_elf_string_from_elf_section | |
4865 | (abfd, | |
4866 | elf_elfheader (abfd)->e_shstrndx, | |
4867 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4868 | if (name == NULL) | |
b34976b6 | 4869 | return FALSE; |
5bd4f169 | 4870 | |
0112cd26 | 4871 | if (! CONST_STRNEQ (name, ".rela") |
65f38f15 AM |
4872 | || strcmp (bfd_get_section_name (abfd, sec), |
4873 | name + 5) != 0) | |
4874 | { | |
4875 | (*_bfd_error_handler) | |
d003868e AM |
4876 | (_("%B: bad relocation section name `%s\'"), |
4877 | abfd, name); | |
5d1634d7 | 4878 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4879 | } |
4880 | ||
65f38f15 | 4881 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4882 | sreloc = bfd_get_section_by_name (dynobj, name); |
4883 | if (sreloc == NULL) | |
4884 | { | |
4885 | flagword flags; | |
4886 | ||
5bd4f169 | 4887 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4888 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4889 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4890 | sreloc = bfd_make_section_with_flags (dynobj, |
4891 | name, | |
4892 | flags); | |
5bd4f169 | 4893 | if (sreloc == NULL |
65f38f15 | 4894 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4895 | return FALSE; |
5bd4f169 | 4896 | } |
65f38f15 | 4897 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4898 | } |
4899 | ||
65f38f15 AM |
4900 | /* If this is a global symbol, we count the number of |
4901 | relocations we need for this symbol. */ | |
4902 | if (h != NULL) | |
4903 | { | |
ec338859 | 4904 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4905 | } |
4906 | else | |
4907 | { | |
ec338859 AM |
4908 | /* Track dynamic relocs needed for local syms too. |
4909 | We really need local syms available to do this | |
4910 | easily. Oh well. */ | |
4911 | ||
4912 | asection *s; | |
6edfbbad DJ |
4913 | void *vpp; |
4914 | ||
ec338859 AM |
4915 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4916 | sec, r_symndx); | |
4917 | if (s == NULL) | |
b34976b6 | 4918 | return FALSE; |
ec338859 | 4919 | |
6edfbbad DJ |
4920 | vpp = &elf_section_data (s)->local_dynrel; |
4921 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4922 | } |
ec338859 AM |
4923 | |
4924 | p = *head; | |
4925 | if (p == NULL || p->sec != sec) | |
4926 | { | |
4ce794b7 | 4927 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4928 | if (p == NULL) |
b34976b6 | 4929 | return FALSE; |
ec338859 AM |
4930 | p->next = *head; |
4931 | *head = p; | |
4932 | p->sec = sec; | |
4933 | p->count = 0; | |
4934 | p->pc_count = 0; | |
4935 | } | |
4936 | ||
4937 | p->count += 1; | |
411e1bfb | 4938 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4939 | p->pc_count += 1; |
65f38f15 | 4940 | } |
5bd4f169 | 4941 | break; |
65f38f15 AM |
4942 | |
4943 | default: | |
96e0dda4 | 4944 | break; |
5bd4f169 AM |
4945 | } |
4946 | } | |
4947 | ||
b34976b6 | 4948 | return TRUE; |
5bd4f169 AM |
4949 | } |
4950 | ||
8387904d AM |
4951 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4952 | of the code entry point, and its section. */ | |
4953 | ||
4954 | static bfd_vma | |
4955 | opd_entry_value (asection *opd_sec, | |
4956 | bfd_vma offset, | |
4957 | asection **code_sec, | |
4958 | bfd_vma *code_off) | |
4959 | { | |
4960 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4961 | Elf_Internal_Rela *relocs; |
8387904d | 4962 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4963 | bfd_vma val; |
8387904d | 4964 | |
4b85d634 AM |
4965 | /* No relocs implies we are linking a --just-symbols object. */ |
4966 | if (opd_sec->reloc_count == 0) | |
4967 | { | |
4968 | bfd_vma val; | |
4969 | ||
4970 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4971 | return (bfd_vma) -1; | |
3b36f7e6 | 4972 | |
4b85d634 AM |
4973 | if (code_sec != NULL) |
4974 | { | |
4975 | asection *sec, *likely = NULL; | |
4976 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4977 | if (sec->vma <= val | |
4978 | && (sec->flags & SEC_LOAD) != 0 | |
4979 | && (sec->flags & SEC_ALLOC) != 0) | |
4980 | likely = sec; | |
4981 | if (likely != NULL) | |
4982 | { | |
4983 | *code_sec = likely; | |
4984 | if (code_off != NULL) | |
4985 | *code_off = val - likely->vma; | |
4986 | } | |
4987 | } | |
4988 | return val; | |
4989 | } | |
4990 | ||
0ffa91dd NC |
4991 | BFD_ASSERT (is_ppc64_elf_target (opd_bfd->xvec)); |
4992 | ||
8860955f AM |
4993 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4994 | if (relocs == NULL) | |
4995 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4996 | |
8387904d | 4997 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4998 | lo = relocs; |
8387904d AM |
4999 | BFD_ASSERT (lo != NULL); |
5000 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5001 | val = (bfd_vma) -1; |
8387904d AM |
5002 | while (lo < hi) |
5003 | { | |
5004 | look = lo + (hi - lo) / 2; | |
5005 | if (look->r_offset < offset) | |
5006 | lo = look + 1; | |
5007 | else if (look->r_offset > offset) | |
5008 | hi = look; | |
5009 | else | |
5010 | { | |
0ffa91dd NC |
5011 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5012 | ||
8387904d AM |
5013 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5014 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5015 | { | |
5016 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5017 | asection *sec; |
5018 | ||
5019 | if (symndx < symtab_hdr->sh_info) | |
5020 | { | |
5021 | Elf_Internal_Sym *sym; | |
5022 | ||
5023 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5024 | if (sym == NULL) | |
5025 | { | |
5026 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5027 | symtab_hdr->sh_info, | |
5028 | 0, NULL, NULL, NULL); | |
5029 | if (sym == NULL) | |
645ea6a9 | 5030 | break; |
8387904d AM |
5031 | symtab_hdr->contents = (bfd_byte *) sym; |
5032 | } | |
5033 | ||
5034 | sym += symndx; | |
5035 | val = sym->st_value; | |
5036 | sec = NULL; | |
5037 | if ((sym->st_shndx != SHN_UNDEF | |
5038 | && sym->st_shndx < SHN_LORESERVE) | |
5039 | || sym->st_shndx > SHN_HIRESERVE) | |
5040 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5041 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5042 | } | |
5043 | else | |
5044 | { | |
5045 | struct elf_link_hash_entry **sym_hashes; | |
5046 | struct elf_link_hash_entry *rh; | |
5047 | ||
5048 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5049 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5050 | while (rh->root.type == bfd_link_hash_indirect | |
5051 | || rh->root.type == bfd_link_hash_warning) | |
5052 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5053 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5054 | || rh->root.type == bfd_link_hash_defweak); | |
5055 | val = rh->root.u.def.value; | |
5056 | sec = rh->root.u.def.section; | |
5057 | } | |
5058 | val += look->r_addend; | |
5059 | if (code_off != NULL) | |
5060 | *code_off = val; | |
5061 | if (code_sec != NULL) | |
5062 | *code_sec = sec; | |
5063 | if (sec != NULL && sec->output_section != NULL) | |
5064 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5065 | } |
5066 | break; | |
5067 | } | |
5068 | } | |
645ea6a9 | 5069 | |
645ea6a9 | 5070 | return val; |
8387904d AM |
5071 | } |
5072 | ||
74f0fb50 AM |
5073 | /* Mark all our entry sym sections, both opd and code section. */ |
5074 | ||
5075 | static void | |
5076 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5077 | { | |
5078 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5079 | struct bfd_sym_chain *sym; | |
5080 | ||
5081 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
5082 | { | |
5083 | struct ppc_link_hash_entry *eh; | |
5084 | asection *sec; | |
5085 | ||
5086 | eh = (struct ppc_link_hash_entry *) | |
5087 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5088 | if (eh == NULL) | |
5089 | continue; | |
5090 | if (eh->elf.root.type != bfd_link_hash_defined | |
5091 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5092 | continue; | |
5093 | ||
5094 | if (eh->is_func_descriptor | |
5095 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5096 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5097 | { | |
5098 | sec = eh->oh->elf.root.u.def.section; | |
5099 | sec->flags |= SEC_KEEP; | |
5100 | } | |
5101 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5102 | && opd_entry_value (eh->elf.root.u.def.section, | |
5103 | eh->elf.root.u.def.value, | |
5104 | &sec, NULL) != (bfd_vma) -1) | |
5105 | sec->flags |= SEC_KEEP; | |
5106 | ||
5107 | sec = eh->elf.root.u.def.section; | |
5108 | sec->flags |= SEC_KEEP; | |
5109 | } | |
5110 | } | |
5111 | ||
64d03ab5 AM |
5112 | /* Mark sections containing dynamically referenced symbols. When |
5113 | building shared libraries, we must assume that any visible symbol is | |
5114 | referenced. */ | |
5115 | ||
5116 | static bfd_boolean | |
5117 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5118 | { | |
5119 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5120 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5121 | ||
5122 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5123 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5124 | ||
5125 | /* Dynamic linking info is on the func descriptor sym. */ | |
5126 | if (eh->oh != NULL | |
5127 | && eh->oh->is_func_descriptor | |
5128 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5129 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5130 | eh = eh->oh; | |
5131 | ||
5132 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5133 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5134 | && (eh->elf.ref_dynamic | |
5135 | || (!info->executable | |
5136 | && eh->elf.def_regular | |
5137 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5138 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5139 | { | |
5140 | asection *code_sec; | |
5141 | ||
5142 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5143 | ||
5144 | /* Function descriptor syms cause the associated | |
5145 | function code sym section to be marked. */ | |
5146 | if (eh->is_func_descriptor | |
5147 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5148 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5149 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5150 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5151 | && opd_entry_value (eh->elf.root.u.def.section, | |
5152 | eh->elf.root.u.def.value, | |
5153 | &code_sec, NULL) != (bfd_vma) -1) | |
5154 | code_sec->flags |= SEC_KEEP; | |
5155 | } | |
5156 | ||
5157 | return TRUE; | |
5158 | } | |
5159 | ||
5bd4f169 AM |
5160 | /* Return the section that should be marked against GC for a given |
5161 | relocation. */ | |
5162 | ||
5163 | static asection * | |
4ce794b7 | 5164 | ppc64_elf_gc_mark_hook (asection *sec, |
74f0fb50 | 5165 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4ce794b7 AM |
5166 | Elf_Internal_Rela *rel, |
5167 | struct elf_link_hash_entry *h, | |
5168 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5169 | { |
ccfa59ea AM |
5170 | asection *rsec; |
5171 | ||
ccfa59ea AM |
5172 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5173 | function sections, as all functions are referenced in .opd. */ | |
5174 | rsec = NULL; | |
5175 | if (get_opd_info (sec) != NULL) | |
5176 | return rsec; | |
1e2f5b6e | 5177 | |
5bd4f169 AM |
5178 | if (h != NULL) |
5179 | { | |
04c9666a | 5180 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5181 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5182 | |
4ce794b7 | 5183 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5184 | switch (r_type) |
5bd4f169 AM |
5185 | { |
5186 | case R_PPC64_GNU_VTINHERIT: | |
5187 | case R_PPC64_GNU_VTENTRY: | |
5188 | break; | |
5189 | ||
5190 | default: | |
5191 | switch (h->root.type) | |
5192 | { | |
5193 | case bfd_link_hash_defined: | |
5194 | case bfd_link_hash_defweak: | |
ccfa59ea | 5195 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5196 | if (eh->oh != NULL |
5197 | && eh->oh->is_func_descriptor | |
5198 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5199 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5200 | eh = eh->oh; |
1e2f5b6e AM |
5201 | |
5202 | /* Function descriptor syms cause the associated | |
5203 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5204 | if (eh->is_func_descriptor |
5205 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5206 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5207 | { |
5208 | /* They also mark their opd section. */ | |
74f0fb50 | 5209 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea AM |
5210 | |
5211 | rsec = eh->oh->elf.root.u.def.section; | |
5212 | } | |
8387904d AM |
5213 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5214 | && opd_entry_value (eh->elf.root.u.def.section, | |
5215 | eh->elf.root.u.def.value, | |
5216 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5217 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5218 | else |
1e2f5b6e AM |
5219 | rsec = h->root.u.def.section; |
5220 | break; | |
5bd4f169 AM |
5221 | |
5222 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5223 | rsec = h->root.u.c.p->section; |
5224 | break; | |
5bd4f169 AM |
5225 | |
5226 | default: | |
5227 | break; | |
5228 | } | |
5229 | } | |
5230 | } | |
5231 | else | |
5232 | { | |
74f0fb50 | 5233 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5234 | |
5235 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5236 | opd = get_opd_info (rsec); |
5237 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5238 | { |
74f0fb50 | 5239 | rsec->gc_mark = 1; |
ccfa59ea | 5240 | |
74f0fb50 | 5241 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5242 | } |
5bd4f169 AM |
5243 | } |
5244 | ||
1e2f5b6e | 5245 | return rsec; |
5bd4f169 AM |
5246 | } |
5247 | ||
65f38f15 AM |
5248 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5249 | section being removed. */ | |
5bd4f169 | 5250 | |
b34976b6 | 5251 | static bfd_boolean |
4ce794b7 AM |
5252 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5253 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5254 | { |
411e1bfb | 5255 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5256 | Elf_Internal_Shdr *symtab_hdr; |
5257 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5258 | struct got_entry **local_got_ents; |
5bd4f169 | 5259 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5260 | |
7dda2462 TG |
5261 | if (info->relocatable) |
5262 | return TRUE; | |
5263 | ||
680a3378 AM |
5264 | if ((sec->flags & SEC_ALLOC) == 0) |
5265 | return TRUE; | |
5266 | ||
ec338859 AM |
5267 | elf_section_data (sec)->local_dynrel = NULL; |
5268 | ||
411e1bfb | 5269 | htab = ppc_hash_table (info); |
0ffa91dd | 5270 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5271 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5272 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5273 | |
5274 | relend = relocs + sec->reloc_count; | |
5275 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5276 | { |
5277 | unsigned long r_symndx; | |
04c9666a | 5278 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5279 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5280 | char tls_type = 0; |
5bd4f169 | 5281 | |
a33d1f77 | 5282 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5283 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5284 | if (r_symndx >= symtab_hdr->sh_info) |
5285 | { | |
5286 | struct ppc_link_hash_entry *eh; | |
5287 | struct ppc_dyn_relocs **pp; | |
5288 | struct ppc_dyn_relocs *p; | |
5289 | ||
5290 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5291 | while (h->root.type == bfd_link_hash_indirect |
5292 | || h->root.type == bfd_link_hash_warning) | |
5293 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5294 | eh = (struct ppc_link_hash_entry *) h; |
5295 | ||
5296 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5297 | if (p->sec == sec) | |
5298 | { | |
5299 | /* Everything must go for SEC. */ | |
5300 | *pp = p->next; | |
5301 | break; | |
5302 | } | |
5303 | } | |
5304 | ||
a33d1f77 AM |
5305 | switch (r_type) |
5306 | { | |
411e1bfb AM |
5307 | case R_PPC64_GOT_TLSLD16: |
5308 | case R_PPC64_GOT_TLSLD16_LO: | |
5309 | case R_PPC64_GOT_TLSLD16_HI: | |
5310 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5311 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5312 | goto dogot; |
5313 | ||
5314 | case R_PPC64_GOT_TLSGD16: | |
5315 | case R_PPC64_GOT_TLSGD16_LO: | |
5316 | case R_PPC64_GOT_TLSGD16_HI: | |
5317 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5318 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5319 | goto dogot; |
5320 | ||
5321 | case R_PPC64_GOT_TPREL16_DS: | |
5322 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5323 | case R_PPC64_GOT_TPREL16_HI: | |
5324 | case R_PPC64_GOT_TPREL16_HA: | |
5325 | tls_type = TLS_TLS | TLS_TPREL; | |
5326 | goto dogot; | |
5327 | ||
5328 | case R_PPC64_GOT_DTPREL16_DS: | |
5329 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5330 | case R_PPC64_GOT_DTPREL16_HI: | |
5331 | case R_PPC64_GOT_DTPREL16_HA: | |
5332 | tls_type = TLS_TLS | TLS_DTPREL; | |
5333 | goto dogot; | |
5334 | ||
a33d1f77 AM |
5335 | case R_PPC64_GOT16: |
5336 | case R_PPC64_GOT16_DS: | |
5337 | case R_PPC64_GOT16_HA: | |
5338 | case R_PPC64_GOT16_HI: | |
5339 | case R_PPC64_GOT16_LO: | |
5340 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5341 | dogot: |
5342 | { | |
5343 | struct got_entry *ent; | |
5344 | ||
58ac9f71 AM |
5345 | if (h != NULL) |
5346 | ent = h->got.glist; | |
411e1bfb AM |
5347 | else |
5348 | ent = local_got_ents[r_symndx]; | |
5349 | ||
5350 | for (; ent != NULL; ent = ent->next) | |
5351 | if (ent->addend == rel->r_addend | |
e717da7e | 5352 | && ent->owner == abfd |
411e1bfb AM |
5353 | && ent->tls_type == tls_type) |
5354 | break; | |
5355 | if (ent == NULL) | |
5356 | abort (); | |
5357 | if (ent->got.refcount > 0) | |
5358 | ent->got.refcount -= 1; | |
5359 | } | |
a33d1f77 | 5360 | break; |
65f38f15 | 5361 | |
a33d1f77 AM |
5362 | case R_PPC64_PLT16_HA: |
5363 | case R_PPC64_PLT16_HI: | |
5364 | case R_PPC64_PLT16_LO: | |
5365 | case R_PPC64_PLT32: | |
5366 | case R_PPC64_PLT64: | |
721956f4 AM |
5367 | case R_PPC64_REL14: |
5368 | case R_PPC64_REL14_BRNTAKEN: | |
5369 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5370 | case R_PPC64_REL24: |
58ac9f71 | 5371 | if (h != NULL) |
5d1634d7 | 5372 | { |
411e1bfb AM |
5373 | struct plt_entry *ent; |
5374 | ||
411e1bfb AM |
5375 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5376 | if (ent->addend == rel->r_addend) | |
5377 | break; | |
5378 | if (ent == NULL) | |
5379 | abort (); | |
5380 | if (ent->plt.refcount > 0) | |
5381 | ent->plt.refcount -= 1; | |
5d1634d7 | 5382 | } |
e86ce104 | 5383 | break; |
5d1634d7 | 5384 | |
a33d1f77 AM |
5385 | default: |
5386 | break; | |
5387 | } | |
5388 | } | |
b34976b6 | 5389 | return TRUE; |
5bd4f169 AM |
5390 | } |
5391 | ||
deb0e272 AM |
5392 | /* The maximum size of .sfpr. */ |
5393 | #define SFPR_MAX (218*4) | |
5394 | ||
5395 | struct sfpr_def_parms | |
5396 | { | |
699733f6 AM |
5397 | const char name[12]; |
5398 | unsigned char lo, hi; | |
deb0e272 AM |
5399 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5400 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5401 | }; | |
5402 | ||
5403 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5404 | ||
5405 | static unsigned int | |
5406 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5407 | { | |
5408 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5409 | unsigned int i; | |
5410 | size_t len = strlen (parm->name); | |
5411 | bfd_boolean writing = FALSE; | |
699733f6 | 5412 | char sym[16]; |
deb0e272 AM |
5413 | |
5414 | memcpy (sym, parm->name, len); | |
5415 | sym[len + 2] = 0; | |
5416 | ||
5417 | for (i = parm->lo; i <= parm->hi; i++) | |
5418 | { | |
5419 | struct elf_link_hash_entry *h; | |
5420 | ||
5421 | sym[len + 0] = i / 10 + '0'; | |
5422 | sym[len + 1] = i % 10 + '0'; | |
5423 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5424 | if (h != NULL | |
f5385ebf | 5425 | && !h->def_regular) |
deb0e272 AM |
5426 | { |
5427 | h->root.type = bfd_link_hash_defined; | |
5428 | h->root.u.def.section = htab->sfpr; | |
5429 | h->root.u.def.value = htab->sfpr->size; | |
5430 | h->type = STT_FUNC; | |
f5385ebf | 5431 | h->def_regular = 1; |
deb0e272 AM |
5432 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5433 | writing = TRUE; | |
5434 | if (htab->sfpr->contents == NULL) | |
5435 | { | |
5436 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5437 | if (htab->sfpr->contents == NULL) | |
5438 | return FALSE; | |
5439 | } | |
5440 | } | |
5441 | if (writing) | |
5442 | { | |
5443 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5444 | if (i != parm->hi) | |
5445 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5446 | else | |
5447 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5448 | htab->sfpr->size = p - htab->sfpr->contents; | |
5449 | } | |
5450 | } | |
5451 | ||
5452 | return TRUE; | |
5453 | } | |
5454 | ||
5455 | static bfd_byte * | |
5456 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5457 | { | |
5458 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5459 | return p + 4; | |
5460 | } | |
5461 | ||
5462 | static bfd_byte * | |
5463 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5464 | { | |
5465 | p = savegpr0 (abfd, p, r); | |
5466 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5467 | p = p + 4; | |
5468 | bfd_put_32 (abfd, BLR, p); | |
5469 | return p + 4; | |
5470 | } | |
5471 | ||
5472 | static bfd_byte * | |
5473 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5474 | { | |
5475 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5476 | return p + 4; | |
5477 | } | |
5478 | ||
5479 | static bfd_byte * | |
5480 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5481 | { | |
5482 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5483 | p = p + 4; | |
5484 | p = restgpr0 (abfd, p, r); | |
5485 | bfd_put_32 (abfd, MTLR_R0, p); | |
5486 | p = p + 4; | |
5487 | if (r == 29) | |
5488 | { | |
5489 | p = restgpr0 (abfd, p, 30); | |
5490 | p = restgpr0 (abfd, p, 31); | |
5491 | } | |
5492 | bfd_put_32 (abfd, BLR, p); | |
5493 | return p + 4; | |
5494 | } | |
5495 | ||
5496 | static bfd_byte * | |
5497 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5498 | { | |
5499 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5500 | return p + 4; | |
5501 | } | |
5502 | ||
5503 | static bfd_byte * | |
5504 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5505 | { | |
5506 | p = savegpr1 (abfd, p, r); | |
5507 | bfd_put_32 (abfd, BLR, p); | |
5508 | return p + 4; | |
5509 | } | |
5510 | ||
5511 | static bfd_byte * | |
5512 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5513 | { | |
5514 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5515 | return p + 4; | |
5516 | } | |
5517 | ||
5518 | static bfd_byte * | |
5519 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5520 | { | |
5521 | p = restgpr1 (abfd, p, r); | |
5522 | bfd_put_32 (abfd, BLR, p); | |
5523 | return p + 4; | |
5524 | } | |
5525 | ||
5526 | static bfd_byte * | |
5527 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5528 | { | |
5529 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5530 | return p + 4; | |
5531 | } | |
5532 | ||
5533 | static bfd_byte * | |
5534 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5535 | { | |
5536 | p = savefpr (abfd, p, r); | |
5537 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5538 | p = p + 4; | |
5539 | bfd_put_32 (abfd, BLR, p); | |
5540 | return p + 4; | |
5541 | } | |
5542 | ||
5543 | static bfd_byte * | |
5544 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5545 | { | |
5546 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5547 | return p + 4; | |
5548 | } | |
5549 | ||
5550 | static bfd_byte * | |
5551 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5552 | { | |
5553 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5554 | p = p + 4; | |
5555 | p = restfpr (abfd, p, r); | |
5556 | bfd_put_32 (abfd, MTLR_R0, p); | |
5557 | p = p + 4; | |
5558 | if (r == 29) | |
5559 | { | |
5560 | p = restfpr (abfd, p, 30); | |
5561 | p = restfpr (abfd, p, 31); | |
5562 | } | |
5563 | bfd_put_32 (abfd, BLR, p); | |
5564 | return p + 4; | |
5565 | } | |
5566 | ||
5567 | static bfd_byte * | |
5568 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5569 | { | |
5570 | p = savefpr (abfd, p, r); | |
5571 | bfd_put_32 (abfd, BLR, p); | |
5572 | return p + 4; | |
5573 | } | |
5574 | ||
5575 | static bfd_byte * | |
5576 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5577 | { | |
5578 | p = restfpr (abfd, p, r); | |
5579 | bfd_put_32 (abfd, BLR, p); | |
5580 | return p + 4; | |
5581 | } | |
5582 | ||
5583 | static bfd_byte * | |
5584 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5585 | { | |
5586 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5587 | p = p + 4; | |
5588 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5589 | return p + 4; | |
5590 | } | |
5591 | ||
5592 | static bfd_byte * | |
5593 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5594 | { | |
5595 | p = savevr (abfd, p, r); | |
5596 | bfd_put_32 (abfd, BLR, p); | |
5597 | return p + 4; | |
5598 | } | |
5599 | ||
5600 | static bfd_byte * | |
5601 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5602 | { | |
5603 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5604 | p = p + 4; | |
5605 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5606 | return p + 4; | |
5607 | } | |
5608 | ||
5609 | static bfd_byte * | |
5610 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5611 | { | |
5612 | p = restvr (abfd, p, r); | |
5613 | bfd_put_32 (abfd, BLR, p); | |
5614 | return p + 4; | |
5615 | } | |
5616 | ||
e86ce104 AM |
5617 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5618 | information on function code symbol entries to their corresponding | |
5619 | function descriptor symbol entries. */ | |
deb0e272 | 5620 | |
b34976b6 | 5621 | static bfd_boolean |
4ce794b7 | 5622 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5623 | { |
e86ce104 | 5624 | struct bfd_link_info *info; |
65f38f15 | 5625 | struct ppc_link_hash_table *htab; |
411e1bfb | 5626 | struct plt_entry *ent; |
50bc7936 AM |
5627 | struct ppc_link_hash_entry *fh; |
5628 | struct ppc_link_hash_entry *fdh; | |
5629 | bfd_boolean force_local; | |
5bd4f169 | 5630 | |
50bc7936 AM |
5631 | fh = (struct ppc_link_hash_entry *) h; |
5632 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5633 | return TRUE; |
e86ce104 | 5634 | |
50bc7936 AM |
5635 | if (fh->elf.root.type == bfd_link_hash_warning) |
5636 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5637 | |
4ce794b7 | 5638 | info = inf; |
65f38f15 | 5639 | htab = ppc_hash_table (info); |
5bd4f169 | 5640 | |
c09bdfe5 AM |
5641 | /* Resolve undefined references to dot-symbols as the value |
5642 | in the function descriptor, if we have one in a regular object. | |
5643 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5644 | in dynamic objects are handled elsewhere. */ | |
5645 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5646 | && fh->was_undefined | |
5647 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5648 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5649 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5650 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5651 | fh->oh->elf.root.u.def.value, | |
5652 | &fh->elf.root.u.def.section, | |
5653 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5654 | { | |
5655 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5656 | fh->elf.forced_local = 1; |
2b953679 AM |
5657 | fh->elf.def_regular = fh->oh->elf.def_regular; |
5658 | fh->elf.def_dynamic = fh->oh->elf.def_dynamic; | |
c09bdfe5 AM |
5659 | } |
5660 | ||
e86ce104 AM |
5661 | /* If this is a function code symbol, transfer dynamic linking |
5662 | information to the function descriptor symbol. */ | |
50bc7936 | 5663 | if (!fh->is_func) |
b34976b6 | 5664 | return TRUE; |
e86ce104 | 5665 | |
50bc7936 | 5666 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5667 | if (ent->plt.refcount > 0) |
5668 | break; | |
50bc7936 AM |
5669 | if (ent == NULL |
5670 | || fh->elf.root.root.string[0] != '.' | |
5671 | || fh->elf.root.root.string[1] == '\0') | |
5672 | return TRUE; | |
5bd4f169 | 5673 | |
50bc7936 AM |
5674 | /* Find the corresponding function descriptor symbol. Create it |
5675 | as undefined if necessary. */ | |
5bd4f169 | 5676 | |
50bc7936 AM |
5677 | fdh = get_fdh (fh, htab); |
5678 | if (fdh != NULL) | |
5679 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5680 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5681 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5682 | |
50bc7936 AM |
5683 | if (fdh == NULL |
5684 | && info->shared | |
5685 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5686 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5687 | { | |
908b32fc | 5688 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5689 | if (fdh == NULL) |
5690 | return FALSE; | |
50bc7936 | 5691 | } |
648cca2c | 5692 | |
908b32fc | 5693 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5694 | code symbol is strong undefined, make the fake sym the same. |
5695 | If the function code symbol is defined, then force the fake | |
5696 | descriptor local; We can't support overriding of symbols in a | |
5697 | shared library on a fake descriptor. */ | |
908b32fc AM |
5698 | |
5699 | if (fdh != NULL | |
5700 | && fdh->fake | |
433817dd | 5701 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5702 | { |
433817dd AM |
5703 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5704 | { | |
5705 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5706 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5707 | } | |
5708 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5709 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5710 | { | |
5711 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5712 | } | |
908b32fc AM |
5713 | } |
5714 | ||
50bc7936 | 5715 | if (fdh != NULL |
f5385ebf | 5716 | && !fdh->elf.forced_local |
50bc7936 | 5717 | && (info->shared |
f5385ebf AM |
5718 | || fdh->elf.def_dynamic |
5719 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5720 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5721 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5722 | { | |
5723 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5724 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5725 | return FALSE; |
f5385ebf AM |
5726 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5727 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5728 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5729 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5730 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5731 | { |
40d16e0b | 5732 | move_plt_plist (fh, fdh); |
f5385ebf | 5733 | fdh->elf.needs_plt = 1; |
e86ce104 | 5734 | } |
50bc7936 | 5735 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5736 | fdh->oh = fh; |
5737 | fh->oh = fdh; | |
e86ce104 AM |
5738 | } |
5739 | ||
50bc7936 AM |
5740 | /* Now that the info is on the function descriptor, clear the |
5741 | function code sym info. Any function code syms for which we | |
5742 | don't have a definition in a regular file, we force local. | |
5743 | This prevents a shared library from exporting syms that have | |
5744 | been imported from another library. Function code syms that | |
5745 | are really in the library we must leave global to prevent the | |
5746 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5747 | force_local = (!fh->elf.def_regular |
5748 | || fdh == NULL | |
5749 | || !fdh->elf.def_regular | |
5750 | || fdh->elf.forced_local); | |
50bc7936 AM |
5751 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5752 | ||
b34976b6 | 5753 | return TRUE; |
e86ce104 | 5754 | } |
40b8271b | 5755 | |
e86ce104 | 5756 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5757 | this hook to a) provide some gcc support functions, and b) transfer |
5758 | dynamic linking information gathered so far on function code symbol | |
5759 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5760 | |
b34976b6 | 5761 | static bfd_boolean |
4ce794b7 AM |
5762 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5763 | struct bfd_link_info *info) | |
e86ce104 AM |
5764 | { |
5765 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5766 | unsigned int i; |
deb0e272 AM |
5767 | const struct sfpr_def_parms funcs[] = |
5768 | { | |
5769 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5770 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5771 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5772 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5773 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5774 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5775 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5776 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5777 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5778 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5779 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5780 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5781 | }; | |
e86ce104 AM |
5782 | |
5783 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5784 | if (htab->sfpr == NULL) |
5785 | /* We don't have any relocs. */ | |
b34976b6 | 5786 | return TRUE; |
82bd7b59 | 5787 | |
deb0e272 AM |
5788 | /* Provide any missing _save* and _rest* functions. */ |
5789 | htab->sfpr->size = 0; | |
5790 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5791 | if (!sfpr_define (info, &funcs[i])) | |
5792 | return FALSE; | |
82bd7b59 | 5793 | |
4ce794b7 | 5794 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5795 | |
eea6121a | 5796 | if (htab->sfpr->size == 0) |
8423293d | 5797 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5798 | |
b34976b6 | 5799 | return TRUE; |
e86ce104 AM |
5800 | } |
5801 | ||
5802 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5803 | regular object. The current definition is in some section of the | |
5804 | dynamic object, but we're not including those sections. We have to | |
5805 | change the definition to something the rest of the link can | |
5806 | understand. */ | |
5807 | ||
b34976b6 | 5808 | static bfd_boolean |
4ce794b7 AM |
5809 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5810 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5811 | { |
5812 | struct ppc_link_hash_table *htab; | |
e86ce104 | 5813 | asection *s; |
e86ce104 AM |
5814 | |
5815 | htab = ppc_hash_table (info); | |
5816 | ||
5817 | /* Deal with function syms. */ | |
5818 | if (h->type == STT_FUNC | |
f5385ebf | 5819 | || h->needs_plt) |
e86ce104 AM |
5820 | { |
5821 | /* Clear procedure linkage table information for any symbol that | |
5822 | won't need a .plt entry. */ | |
411e1bfb AM |
5823 | struct plt_entry *ent; |
5824 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5825 | if (ent->plt.refcount > 0) | |
5826 | break; | |
8387904d | 5827 | if (ent == NULL |
9c7a29a3 AM |
5828 | || SYMBOL_CALLS_LOCAL (info, h) |
5829 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5830 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5831 | { |
411e1bfb | 5832 | h->plt.plist = NULL; |
f5385ebf | 5833 | h->needs_plt = 0; |
40b8271b | 5834 | } |
5bd4f169 | 5835 | } |
bbd7ec4a | 5836 | else |
411e1bfb | 5837 | h->plt.plist = NULL; |
5bd4f169 AM |
5838 | |
5839 | /* If this is a weak symbol, and there is a real definition, the | |
5840 | processor independent code will have arranged for us to see the | |
5841 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5842 | if (h->u.weakdef != NULL) |
5bd4f169 | 5843 | { |
f6e332e6 AM |
5844 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5845 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5846 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5847 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5848 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5849 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5850 | return TRUE; |
5bd4f169 AM |
5851 | } |
5852 | ||
5bd4f169 AM |
5853 | /* If we are creating a shared library, we must presume that the |
5854 | only references to the symbol are via the global offset table. | |
5855 | For such cases we need not do anything here; the relocations will | |
5856 | be handled correctly by relocate_section. */ | |
5857 | if (info->shared) | |
b34976b6 | 5858 | return TRUE; |
5bd4f169 | 5859 | |
65f38f15 AM |
5860 | /* If there are no references to this symbol that do not use the |
5861 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5862 | if (!h->non_got_ref) |
b34976b6 | 5863 | return TRUE; |
65f38f15 | 5864 | |
b186458a JJ |
5865 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
5866 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
5867 | return TRUE; | |
5868 | ||
f4656909 | 5869 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5870 | { |
f4656909 AM |
5871 | struct ppc_link_hash_entry * eh; |
5872 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5873 | |
f4656909 AM |
5874 | eh = (struct ppc_link_hash_entry *) h; |
5875 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5876 | { | |
5877 | s = p->sec->output_section; | |
5878 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5879 | break; | |
5880 | } | |
5881 | ||
5882 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5883 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5884 | if (p == NULL) | |
5885 | { | |
f5385ebf | 5886 | h->non_got_ref = 0; |
f4656909 AM |
5887 | return TRUE; |
5888 | } | |
65f38f15 AM |
5889 | } |
5890 | ||
5d35169e | 5891 | if (h->plt.plist != NULL) |
97b639ba AM |
5892 | { |
5893 | /* We should never get here, but unfortunately there are versions | |
5894 | of gcc out there that improperly (for this ABI) put initialized | |
5895 | function pointers, vtable refs and suchlike in read-only | |
5896 | sections. Allow them to proceed, but warn that this might | |
5897 | break at runtime. */ | |
5898 | (*_bfd_error_handler) | |
5899 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5900 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5901 | h->root.root.string); | |
5902 | } | |
5d35169e AM |
5903 | |
5904 | /* This is a reference to a symbol defined by a dynamic object which | |
5905 | is not a function. */ | |
5906 | ||
909272ee AM |
5907 | if (h->size == 0) |
5908 | { | |
5909 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5910 | h->root.root.string); | |
5911 | return TRUE; | |
5912 | } | |
5913 | ||
5bd4f169 AM |
5914 | /* We must allocate the symbol in our .dynbss section, which will |
5915 | become part of the .bss section of the executable. There will be | |
5916 | an entry for this symbol in the .dynsym section. The dynamic | |
5917 | object will contain position independent code, so all references | |
5918 | from the dynamic object to this symbol will go through the global | |
5919 | offset table. The dynamic linker will use the .dynsym entry to | |
5920 | determine the address it must put in the global offset table, so | |
5921 | both the dynamic object and the regular object will refer to the | |
5922 | same memory location for the variable. */ | |
5bd4f169 | 5923 | |
04c9666a AM |
5924 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5925 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5926 | runtime process image. We need to remember the offset into the |
5927 | .rela.bss section we are going to use. */ | |
5928 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5929 | { | |
eea6121a | 5930 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5931 | h->needs_copy = 1; |
5bd4f169 AM |
5932 | } |
5933 | ||
4ce794b7 | 5934 | s = htab->dynbss; |
5bd4f169 | 5935 | |
027297b7 | 5936 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
5937 | } |
5938 | ||
e86ce104 AM |
5939 | /* If given a function descriptor symbol, hide both the function code |
5940 | sym and the descriptor. */ | |
5941 | static void | |
4ce794b7 AM |
5942 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5943 | struct elf_link_hash_entry *h, | |
5944 | bfd_boolean force_local) | |
e86ce104 | 5945 | { |
34814b9f | 5946 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5947 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5948 | ||
34814b9f AM |
5949 | eh = (struct ppc_link_hash_entry *) h; |
5950 | if (eh->is_func_descriptor) | |
e86ce104 | 5951 | { |
34814b9f | 5952 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5953 | |
721956f4 | 5954 | if (fh == NULL) |
d1329ca3 AM |
5955 | { |
5956 | const char *p, *q; | |
5957 | struct ppc_link_hash_table *htab; | |
5958 | char save; | |
5959 | ||
5960 | /* We aren't supposed to use alloca in BFD because on | |
5961 | systems which do not have alloca the version in libiberty | |
5962 | calls xmalloc, which might cause the program to crash | |
5963 | when it runs out of memory. This function doesn't have a | |
5964 | return status, so there's no way to gracefully return an | |
5965 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5966 | accessed; It's either a string in an ELF string table, |
5967 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5968 | |
34814b9f | 5969 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5970 | save = *p; |
5971 | *(char *) p = '.'; | |
5972 | htab = ppc_hash_table (info); | |
34814b9f AM |
5973 | fh = (struct ppc_link_hash_entry *) |
5974 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5975 | *(char *) p = save; |
5976 | ||
5977 | /* Unfortunately, if it so happens that the string we were | |
5978 | looking for was allocated immediately before this string, | |
5979 | then we overwrote the string terminator. That's the only | |
5980 | reason the lookup should fail. */ | |
5981 | if (fh == NULL) | |
5982 | { | |
34814b9f AM |
5983 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5984 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5985 | --q, --p; |
34814b9f AM |
5986 | if (q < eh->elf.root.root.string && *p == '.') |
5987 | fh = (struct ppc_link_hash_entry *) | |
5988 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5989 | } |
5990 | if (fh != NULL) | |
5991 | { | |
34814b9f AM |
5992 | eh->oh = fh; |
5993 | fh->oh = eh; | |
d1329ca3 AM |
5994 | } |
5995 | } | |
e86ce104 | 5996 | if (fh != NULL) |
34814b9f | 5997 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5998 | } |
5999 | } | |
6000 | ||
411e1bfb | 6001 | static bfd_boolean |
8843416a AM |
6002 | get_sym_h (struct elf_link_hash_entry **hp, |
6003 | Elf_Internal_Sym **symp, | |
6004 | asection **symsecp, | |
6005 | char **tls_maskp, | |
6006 | Elf_Internal_Sym **locsymsp, | |
6007 | unsigned long r_symndx, | |
6008 | bfd *ibfd) | |
411e1bfb | 6009 | { |
0ffa91dd | 6010 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6011 | |
6012 | if (r_symndx >= symtab_hdr->sh_info) | |
6013 | { | |
6014 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6015 | struct elf_link_hash_entry *h; | |
6016 | ||
6017 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6018 | while (h->root.type == bfd_link_hash_indirect | |
6019 | || h->root.type == bfd_link_hash_warning) | |
6020 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6021 | ||
6022 | if (hp != NULL) | |
6023 | *hp = h; | |
6024 | ||
6025 | if (symp != NULL) | |
6026 | *symp = NULL; | |
6027 | ||
6028 | if (symsecp != NULL) | |
6029 | { | |
6030 | asection *symsec = NULL; | |
6031 | if (h->root.type == bfd_link_hash_defined | |
6032 | || h->root.type == bfd_link_hash_defweak) | |
6033 | symsec = h->root.u.def.section; | |
6034 | *symsecp = symsec; | |
6035 | } | |
6036 | ||
e7b938ca | 6037 | if (tls_maskp != NULL) |
411e1bfb AM |
6038 | { |
6039 | struct ppc_link_hash_entry *eh; | |
6040 | ||
6041 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6042 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6043 | } |
6044 | } | |
6045 | else | |
6046 | { | |
6047 | Elf_Internal_Sym *sym; | |
6048 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6049 | ||
6050 | if (locsyms == NULL) | |
6051 | { | |
6052 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6053 | if (locsyms == NULL) | |
6054 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6055 | symtab_hdr->sh_info, | |
6056 | 0, NULL, NULL, NULL); | |
6057 | if (locsyms == NULL) | |
6058 | return FALSE; | |
6059 | *locsymsp = locsyms; | |
6060 | } | |
6061 | sym = locsyms + r_symndx; | |
6062 | ||
6063 | if (hp != NULL) | |
6064 | *hp = NULL; | |
6065 | ||
6066 | if (symp != NULL) | |
6067 | *symp = sym; | |
6068 | ||
6069 | if (symsecp != NULL) | |
6070 | { | |
6071 | asection *symsec = NULL; | |
6072 | if ((sym->st_shndx != SHN_UNDEF | |
6073 | && sym->st_shndx < SHN_LORESERVE) | |
6074 | || sym->st_shndx > SHN_HIRESERVE) | |
6075 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
6076 | *symsecp = symsec; | |
6077 | } | |
6078 | ||
e7b938ca | 6079 | if (tls_maskp != NULL) |
411e1bfb AM |
6080 | { |
6081 | struct got_entry **lgot_ents; | |
e7b938ca | 6082 | char *tls_mask; |
411e1bfb | 6083 | |
e7b938ca | 6084 | tls_mask = NULL; |
411e1bfb AM |
6085 | lgot_ents = elf_local_got_ents (ibfd); |
6086 | if (lgot_ents != NULL) | |
6087 | { | |
e7b938ca AM |
6088 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6089 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6090 | } |
e7b938ca | 6091 | *tls_maskp = tls_mask; |
411e1bfb AM |
6092 | } |
6093 | } | |
6094 | return TRUE; | |
6095 | } | |
6096 | ||
e7b938ca | 6097 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6098 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6099 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6100 | |
6101 | static int | |
0d4792f7 AM |
6102 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6103 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6104 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6105 | { |
6106 | unsigned long r_symndx; | |
0d4792f7 | 6107 | int next_r; |
411e1bfb AM |
6108 | struct elf_link_hash_entry *h; |
6109 | Elf_Internal_Sym *sym; | |
6110 | asection *sec; | |
6111 | bfd_vma off; | |
6112 | ||
6113 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6114 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6115 | return 0; |
411e1bfb | 6116 | |
e7b938ca | 6117 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6118 | || sec == NULL |
7c8fe5c4 | 6119 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6120 | return 1; |
411e1bfb AM |
6121 | |
6122 | /* Look inside a TOC section too. */ | |
6123 | if (h != NULL) | |
6124 | { | |
6125 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6126 | off = h->root.u.def.value; | |
6127 | } | |
6128 | else | |
6129 | off = sym->st_value; | |
6130 | off += rel->r_addend; | |
6131 | BFD_ASSERT (off % 8 == 0); | |
7c8fe5c4 AM |
6132 | r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8]; |
6133 | next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1]; | |
e7b938ca | 6134 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6135 | return 0; |
0d4792f7 AM |
6136 | if (toc_symndx != NULL) |
6137 | *toc_symndx = r_symndx; | |
6138 | if ((h == NULL | |
6139 | || ((h->root.type == bfd_link_hash_defined | |
6140 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6141 | && !h->def_dynamic)) |
0d4792f7 AM |
6142 | && (next_r == -1 || next_r == -2)) |
6143 | return 1 - next_r; | |
951fd09b | 6144 | return 1; |
411e1bfb AM |
6145 | } |
6146 | ||
754021d0 | 6147 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6148 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6149 | |
6150 | static bfd_boolean | |
6151 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6152 | { | |
6153 | struct ppc_link_hash_entry *eh; | |
6154 | asection *sym_sec; | |
74f0fb50 | 6155 | struct _opd_sec_data *opd; |
754021d0 AM |
6156 | |
6157 | if (h->root.type == bfd_link_hash_indirect) | |
6158 | return TRUE; | |
6159 | ||
6160 | if (h->root.type == bfd_link_hash_warning) | |
6161 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6162 | ||
6163 | if (h->root.type != bfd_link_hash_defined | |
6164 | && h->root.type != bfd_link_hash_defweak) | |
6165 | return TRUE; | |
6166 | ||
6167 | eh = (struct ppc_link_hash_entry *) h; | |
6168 | if (eh->adjust_done) | |
6169 | return TRUE; | |
6170 | ||
6171 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6172 | opd = get_opd_info (sym_sec); |
6173 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6174 | { |
74f0fb50 | 6175 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6176 | if (adjust == -1) |
6177 | { | |
6178 | /* This entry has been deleted. */ | |
b3fac117 | 6179 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6180 | if (dsec == NULL) |
6181 | { | |
6182 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6183 | if (elf_discarded_section (dsec)) | |
6184 | { | |
b3fac117 | 6185 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6186 | break; |
6187 | } | |
6188 | } | |
4025353c | 6189 | eh->elf.root.u.def.value = 0; |
81688140 | 6190 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6191 | } |
6192 | else | |
6193 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6194 | eh->adjust_done = 1; |
6195 | } | |
6196 | return TRUE; | |
6197 | } | |
6198 | ||
8c1d1bb8 AM |
6199 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6200 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6201 | have already been determined. */ | |
6202 | ||
6203 | static bfd_boolean | |
6204 | dec_dynrel_count (bfd_vma r_info, | |
6205 | asection *sec, | |
6206 | struct bfd_link_info *info, | |
6207 | Elf_Internal_Sym **local_syms, | |
6208 | struct elf_link_hash_entry *h, | |
6209 | asection *sym_sec) | |
6210 | { | |
6211 | enum elf_ppc64_reloc_type r_type; | |
6212 | struct ppc_dyn_relocs *p; | |
6213 | struct ppc_dyn_relocs **pp; | |
6214 | ||
6215 | /* Can this reloc be dynamic? This switch, and later tests here | |
6216 | should be kept in sync with the code in check_relocs. */ | |
6217 | r_type = ELF64_R_TYPE (r_info); | |
6218 | switch (r_type) | |
6219 | { | |
6220 | default: | |
6221 | return TRUE; | |
6222 | ||
6223 | case R_PPC64_TPREL16: | |
6224 | case R_PPC64_TPREL16_LO: | |
6225 | case R_PPC64_TPREL16_HI: | |
6226 | case R_PPC64_TPREL16_HA: | |
6227 | case R_PPC64_TPREL16_DS: | |
6228 | case R_PPC64_TPREL16_LO_DS: | |
6229 | case R_PPC64_TPREL16_HIGHER: | |
6230 | case R_PPC64_TPREL16_HIGHERA: | |
6231 | case R_PPC64_TPREL16_HIGHEST: | |
6232 | case R_PPC64_TPREL16_HIGHESTA: | |
6233 | if (!info->shared) | |
6234 | return TRUE; | |
6235 | ||
6236 | case R_PPC64_TPREL64: | |
6237 | case R_PPC64_DTPMOD64: | |
6238 | case R_PPC64_DTPREL64: | |
6239 | case R_PPC64_ADDR64: | |
6240 | case R_PPC64_REL30: | |
6241 | case R_PPC64_REL32: | |
6242 | case R_PPC64_REL64: | |
6243 | case R_PPC64_ADDR14: | |
6244 | case R_PPC64_ADDR14_BRNTAKEN: | |
6245 | case R_PPC64_ADDR14_BRTAKEN: | |
6246 | case R_PPC64_ADDR16: | |
6247 | case R_PPC64_ADDR16_DS: | |
6248 | case R_PPC64_ADDR16_HA: | |
6249 | case R_PPC64_ADDR16_HI: | |
6250 | case R_PPC64_ADDR16_HIGHER: | |
6251 | case R_PPC64_ADDR16_HIGHERA: | |
6252 | case R_PPC64_ADDR16_HIGHEST: | |
6253 | case R_PPC64_ADDR16_HIGHESTA: | |
6254 | case R_PPC64_ADDR16_LO: | |
6255 | case R_PPC64_ADDR16_LO_DS: | |
6256 | case R_PPC64_ADDR24: | |
6257 | case R_PPC64_ADDR32: | |
6258 | case R_PPC64_UADDR16: | |
6259 | case R_PPC64_UADDR32: | |
6260 | case R_PPC64_UADDR64: | |
6261 | case R_PPC64_TOC: | |
6262 | break; | |
6263 | } | |
6264 | ||
6265 | if (local_syms != NULL) | |
6266 | { | |
6267 | unsigned long r_symndx; | |
6268 | Elf_Internal_Sym *sym; | |
6269 | bfd *ibfd = sec->owner; | |
6270 | ||
6271 | r_symndx = ELF64_R_SYM (r_info); | |
6272 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6273 | return FALSE; | |
6274 | } | |
6275 | ||
6276 | if ((info->shared | |
6277 | && (MUST_BE_DYN_RELOC (r_type) | |
6278 | || (h != NULL | |
6279 | && (!info->symbolic | |
6280 | || h->root.type == bfd_link_hash_defweak | |
6281 | || !h->def_regular)))) | |
6282 | || (ELIMINATE_COPY_RELOCS | |
6283 | && !info->shared | |
6284 | && h != NULL | |
6285 | && (h->root.type == bfd_link_hash_defweak | |
6286 | || !h->def_regular))) | |
6287 | ; | |
6288 | else | |
6289 | return TRUE; | |
6290 | ||
6291 | if (h != NULL) | |
6292 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6293 | else |
6edfbbad | 6294 | { |
60124e18 AM |
6295 | if (sym_sec != NULL) |
6296 | { | |
6297 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6298 | pp = (struct ppc_dyn_relocs **) vpp; | |
6299 | } | |
6300 | else | |
6301 | { | |
6302 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6303 | pp = (struct ppc_dyn_relocs **) vpp; | |
6304 | } | |
6305 | ||
6306 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6307 | with local syms for a given section. Don't report a dynreloc | |
6308 | miscount. */ | |
6309 | if (*pp == NULL) | |
6310 | return TRUE; | |
6edfbbad | 6311 | } |
8c1d1bb8 AM |
6312 | |
6313 | while ((p = *pp) != NULL) | |
6314 | { | |
6315 | if (p->sec == sec) | |
6316 | { | |
6317 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6318 | p->pc_count -= 1; | |
6319 | p->count -= 1; | |
6320 | if (p->count == 0) | |
6321 | *pp = p->next; | |
6322 | return TRUE; | |
6323 | } | |
6324 | pp = &p->next; | |
6325 | } | |
6326 | ||
6327 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6328 | sec->owner, sec); | |
6329 | bfd_set_error (bfd_error_bad_value); | |
6330 | return FALSE; | |
6331 | } | |
6332 | ||
754021d0 AM |
6333 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6334 | only remove those associated with functions in discarded link-once | |
6335 | sections, or weakly defined functions that have been overridden. It | |
6336 | would be possible to remove many more entries for statically linked | |
6337 | applications. */ | |
6338 | ||
b34976b6 | 6339 | bfd_boolean |
3f764659 JJ |
6340 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
6341 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
6342 | { |
6343 | bfd *ibfd; | |
754021d0 | 6344 | bfd_boolean some_edited = FALSE; |
3f764659 | 6345 | asection *need_pad = NULL; |
1e2f5b6e | 6346 | |
411e1bfb | 6347 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6348 | { |
6349 | asection *sec; | |
6350 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6351 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6352 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6353 | struct elf_link_hash_entry **sym_hashes; |
6354 | bfd_vma offset; | |
74f0fb50 | 6355 | struct _opd_sec_data *opd; |
3f764659 JJ |
6356 | bfd_boolean need_edit, add_aux_fields; |
6357 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6358 | |
6359 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6360 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6361 | continue; |
6362 | ||
4b85d634 AM |
6363 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6364 | continue; | |
6365 | ||
1e2f5b6e AM |
6366 | if (sec->output_section == bfd_abs_section_ptr) |
6367 | continue; | |
6368 | ||
6369 | /* Look through the section relocs. */ | |
6370 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6371 | continue; | |
6372 | ||
6cdc0ccc | 6373 | local_syms = NULL; |
0ffa91dd | 6374 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6375 | sym_hashes = elf_sym_hashes (ibfd); |
6376 | ||
6377 | /* Read the relocations. */ | |
4ce794b7 | 6378 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6379 | info->keep_memory); |
1e2f5b6e | 6380 | if (relstart == NULL) |
b34976b6 | 6381 | return FALSE; |
1e2f5b6e AM |
6382 | |
6383 | /* First run through the relocs to check they are sane, and to | |
6384 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6385 | need_edit = FALSE; |
3f764659 | 6386 | need_pad = sec; |
1e2f5b6e AM |
6387 | offset = 0; |
6388 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6389 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6390 | { |
04c9666a | 6391 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6392 | unsigned long r_symndx; |
6393 | asection *sym_sec; | |
6394 | struct elf_link_hash_entry *h; | |
6395 | Elf_Internal_Sym *sym; | |
6396 | ||
3f764659 | 6397 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6398 | only interested in the reloc pointing to a function entry |
6399 | point. */ | |
50bc7936 AM |
6400 | if (rel->r_offset != offset |
6401 | || rel + 1 >= relend | |
6402 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6403 | { |
6404 | /* If someone messes with .opd alignment then after a | |
6405 | "ld -r" we might have padding in the middle of .opd. | |
6406 | Also, there's nothing to prevent someone putting | |
6407 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6408 | optimization for them! */ |
3f764659 | 6409 | broken_opd: |
1e2f5b6e | 6410 | (*_bfd_error_handler) |
d003868e | 6411 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6412 | need_edit = FALSE; |
1e2f5b6e AM |
6413 | break; |
6414 | } | |
6415 | ||
50bc7936 AM |
6416 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6417 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6418 | { | |
6419 | (*_bfd_error_handler) | |
d003868e AM |
6420 | (_("%B: unexpected reloc type %u in .opd section"), |
6421 | ibfd, r_type); | |
50bc7936 AM |
6422 | need_edit = FALSE; |
6423 | break; | |
6424 | } | |
6425 | ||
1e2f5b6e | 6426 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6427 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6428 | r_symndx, ibfd)) | |
50bc7936 | 6429 | goto error_ret; |
1e2f5b6e AM |
6430 | |
6431 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6432 | { | |
411e1bfb AM |
6433 | const char *sym_name; |
6434 | if (h != NULL) | |
6435 | sym_name = h->root.root.string; | |
6436 | else | |
26c61ae5 L |
6437 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6438 | sym_sec); | |
411e1bfb | 6439 | |
1e2f5b6e | 6440 | (*_bfd_error_handler) |
d003868e AM |
6441 | (_("%B: undefined sym `%s' in .opd section"), |
6442 | ibfd, sym_name); | |
b34976b6 | 6443 | need_edit = FALSE; |
1e2f5b6e AM |
6444 | break; |
6445 | } | |
6446 | ||
51020317 AM |
6447 | /* opd entries are always for functions defined in the |
6448 | current input bfd. If the symbol isn't defined in the | |
6449 | input bfd, then we won't be using the function in this | |
6450 | bfd; It must be defined in a linkonce section in another | |
6451 | bfd, or is weak. It's also possible that we are | |
6452 | discarding the function due to a linker script /DISCARD/, | |
6453 | which we test for via the output_section. */ | |
6454 | if (sym_sec->owner != ibfd | |
6455 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6456 | need_edit = TRUE; |
1e2f5b6e | 6457 | |
50bc7936 | 6458 | rel += 2; |
3f764659 JJ |
6459 | if (rel == relend |
6460 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6461 | { | |
6462 | if (sec->size == offset + 24) | |
6463 | { | |
6464 | need_pad = NULL; | |
6465 | break; | |
6466 | } | |
6467 | if (rel == relend && sec->size == offset + 16) | |
6468 | { | |
6469 | cnt_16b++; | |
6470 | break; | |
6471 | } | |
6472 | goto broken_opd; | |
6473 | } | |
6474 | ||
6475 | if (rel->r_offset == offset + 24) | |
6476 | offset += 24; | |
6477 | else if (rel->r_offset != offset + 16) | |
6478 | goto broken_opd; | |
6479 | else if (rel + 1 < relend | |
6480 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6481 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6482 | { | |
6483 | offset += 16; | |
6484 | cnt_16b++; | |
6485 | } | |
6486 | else if (rel + 2 < relend | |
6487 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6488 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6489 | { | |
6490 | offset += 24; | |
6491 | rel += 1; | |
6492 | } | |
6493 | else | |
6494 | goto broken_opd; | |
1e2f5b6e AM |
6495 | } |
6496 | ||
3f764659 JJ |
6497 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6498 | ||
6499 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6500 | { |
6501 | Elf_Internal_Rela *write_rel; | |
6502 | bfd_byte *rptr, *wptr; | |
3f764659 | 6503 | bfd_byte *new_contents = NULL; |
b34976b6 | 6504 | bfd_boolean skip; |
3f764659 | 6505 | long opd_ent_size; |
74f0fb50 AM |
6506 | bfd_size_type amt; |
6507 | ||
6508 | amt = sec->size * sizeof (long) / 8; | |
6509 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
6510 | opd->adjust = bfd_zalloc (obfd, amt); | |
6511 | if (opd->adjust == NULL) | |
6512 | return FALSE; | |
6513 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
6514 | |
6515 | /* This seems a waste of time as input .opd sections are all | |
6516 | zeros as generated by gcc, but I suppose there's no reason | |
6517 | this will always be so. We might start putting something in | |
6518 | the third word of .opd entries. */ | |
6519 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6520 | { | |
eea6121a AM |
6521 | bfd_byte *loc; |
6522 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6523 | { |
eea6121a AM |
6524 | if (loc != NULL) |
6525 | free (loc); | |
50bc7936 | 6526 | error_ret: |
6cdc0ccc AM |
6527 | if (local_syms != NULL |
6528 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6529 | free (local_syms); | |
6cdc0ccc AM |
6530 | if (elf_section_data (sec)->relocs != relstart) |
6531 | free (relstart); | |
b34976b6 | 6532 | return FALSE; |
6cdc0ccc | 6533 | } |
1e2f5b6e AM |
6534 | sec->contents = loc; |
6535 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6536 | } | |
6537 | ||
6538 | elf_section_data (sec)->relocs = relstart; | |
6539 | ||
3f764659 | 6540 | new_contents = sec->contents; |
3f764659 JJ |
6541 | if (add_aux_fields) |
6542 | { | |
6543 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6544 | if (new_contents == NULL) | |
6545 | return FALSE; | |
6546 | need_pad = FALSE; | |
3f764659 | 6547 | } |
b4f4e59f AM |
6548 | wptr = new_contents; |
6549 | rptr = sec->contents; | |
3f764659 | 6550 | |
1e2f5b6e | 6551 | write_rel = relstart; |
b34976b6 | 6552 | skip = FALSE; |
1e2f5b6e | 6553 | offset = 0; |
3f764659 | 6554 | opd_ent_size = 0; |
1e2f5b6e AM |
6555 | for (rel = relstart; rel < relend; rel++) |
6556 | { | |
50bc7936 AM |
6557 | unsigned long r_symndx; |
6558 | asection *sym_sec; | |
6559 | struct elf_link_hash_entry *h; | |
6560 | Elf_Internal_Sym *sym; | |
6561 | ||
6562 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6563 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6564 | r_symndx, ibfd)) |
50bc7936 AM |
6565 | goto error_ret; |
6566 | ||
1e2f5b6e AM |
6567 | if (rel->r_offset == offset) |
6568 | { | |
50bc7936 | 6569 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6570 | |
6571 | /* See if the .opd entry is full 24 byte or | |
6572 | 16 byte (with fd_aux entry overlapped with next | |
6573 | fd_func). */ | |
6574 | opd_ent_size = 24; | |
6575 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6576 | || (rel + 3 < relend | |
6577 | && rel[2].r_offset == offset + 16 | |
6578 | && rel[3].r_offset == offset + 24 | |
6579 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6580 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6581 | opd_ent_size = 16; | |
6582 | ||
4025353c AM |
6583 | if (h != NULL |
6584 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6585 | { |
6586 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6587 | ppc_hash_table (info)); | |
6588 | if (fdh != NULL | |
6589 | && fdh->elf.root.type != bfd_link_hash_defined | |
6590 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6591 | fdh = NULL; | |
6592 | } | |
1e2f5b6e | 6593 | |
51020317 AM |
6594 | skip = (sym_sec->owner != ibfd |
6595 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6596 | if (skip) |
6597 | { | |
4025353c | 6598 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6599 | { |
6600 | /* Arrange for the function descriptor sym | |
6601 | to be dropped. */ | |
d6fe2dc1 AM |
6602 | fdh->elf.root.u.def.value = 0; |
6603 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6604 | } |
74f0fb50 | 6605 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6606 | } |
6607 | else | |
1e2f5b6e AM |
6608 | { |
6609 | /* We'll be keeping this opd entry. */ | |
6610 | ||
4025353c | 6611 | if (fdh != NULL) |
1e2f5b6e | 6612 | { |
754021d0 AM |
6613 | /* Redefine the function descriptor symbol to |
6614 | this location in the opd section. It is | |
6615 | necessary to update the value here rather | |
6616 | than using an array of adjustments as we do | |
6617 | for local symbols, because various places | |
6618 | in the generic ELF code use the value | |
6619 | stored in u.def.value. */ | |
3f764659 | 6620 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6621 | fdh->adjust_done = 1; |
1e2f5b6e | 6622 | } |
754021d0 AM |
6623 | |
6624 | /* Local syms are a bit tricky. We could | |
6625 | tweak them as they can be cached, but | |
6626 | we'd need to look through the local syms | |
6627 | for the function descriptor sym which we | |
6628 | don't have at the moment. So keep an | |
6629 | array of adjustments. */ | |
74f0fb50 | 6630 | opd->adjust[rel->r_offset / 8] |
3f764659 | 6631 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
6632 | |
6633 | if (wptr != rptr) | |
3f764659 JJ |
6634 | memcpy (wptr, rptr, opd_ent_size); |
6635 | wptr += opd_ent_size; | |
6636 | if (add_aux_fields && opd_ent_size == 16) | |
6637 | { | |
6638 | memset (wptr, '\0', 8); | |
6639 | wptr += 8; | |
6640 | } | |
1e2f5b6e | 6641 | } |
3f764659 JJ |
6642 | rptr += opd_ent_size; |
6643 | offset += opd_ent_size; | |
1e2f5b6e AM |
6644 | } |
6645 | ||
50bc7936 AM |
6646 | if (skip) |
6647 | { | |
60124e18 AM |
6648 | if (!NO_OPD_RELOCS |
6649 | && !info->relocatable | |
18d944df AM |
6650 | && !dec_dynrel_count (rel->r_info, sec, info, |
6651 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6652 | goto error_ret; |
50bc7936 AM |
6653 | } |
6654 | else | |
1e2f5b6e | 6655 | { |
50bc7936 AM |
6656 | /* We need to adjust any reloc offsets to point to the |
6657 | new opd entries. While we're at it, we may as well | |
6658 | remove redundant relocs. */ | |
74f0fb50 | 6659 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6660 | if (write_rel != rel) |
6661 | memcpy (write_rel, rel, sizeof (*rel)); | |
6662 | ++write_rel; | |
6663 | } | |
6664 | } | |
6665 | ||
3f764659 | 6666 | sec->size = wptr - new_contents; |
1e2f5b6e | 6667 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6668 | if (add_aux_fields) |
6669 | { | |
6670 | free (sec->contents); | |
6671 | sec->contents = new_contents; | |
6672 | } | |
6673 | ||
05bf9422 | 6674 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6675 | elf_bfd_final_link if we are emitting relocs. */ |
6676 | elf_section_data (sec)->rel_hdr.sh_size | |
6677 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6678 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6679 | some_edited = TRUE; |
1e2f5b6e | 6680 | } |
6cdc0ccc | 6681 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6682 | free (relstart); |
6cdc0ccc | 6683 | |
411e1bfb AM |
6684 | if (local_syms != NULL |
6685 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6686 | { | |
6687 | if (!info->keep_memory) | |
6688 | free (local_syms); | |
6689 | else | |
6690 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6691 | } | |
6692 | } | |
6693 | ||
754021d0 AM |
6694 | if (some_edited) |
6695 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6696 | ||
3f764659 JJ |
6697 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6698 | long, add a 8 byte padding after it. */ | |
6699 | if (need_pad != NULL && !info->relocatable) | |
6700 | { | |
6701 | bfd_byte *p; | |
6702 | ||
6703 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6704 | { | |
6705 | BFD_ASSERT (need_pad->size > 0); | |
6706 | ||
6707 | p = bfd_malloc (need_pad->size + 8); | |
6708 | if (p == NULL) | |
6709 | return FALSE; | |
699733f6 | 6710 | |
3f764659 JJ |
6711 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6712 | p, 0, need_pad->size)) | |
6713 | return FALSE; | |
6714 | ||
6715 | need_pad->contents = p; | |
6716 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6717 | } | |
6718 | else | |
6719 | { | |
6720 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6721 | if (p == NULL) | |
6722 | return FALSE; | |
6723 | ||
6724 | need_pad->contents = p; | |
6725 | } | |
6726 | ||
6727 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6728 | need_pad->size += 8; | |
6729 | } | |
6730 | ||
411e1bfb AM |
6731 | return TRUE; |
6732 | } | |
6733 | ||
e1918d23 | 6734 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6735 | |
e1918d23 | 6736 | asection * |
4ce794b7 | 6737 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6738 | { |
411e1bfb AM |
6739 | struct ppc_link_hash_table *htab; |
6740 | ||
411e1bfb | 6741 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6742 | if (htab->tls_get_addr != NULL) |
6743 | { | |
8387904d | 6744 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6745 | |
8387904d AM |
6746 | while (h->elf.root.type == bfd_link_hash_indirect |
6747 | || h->elf.root.type == bfd_link_hash_warning) | |
6748 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6749 | |
6750 | htab->tls_get_addr = h; | |
8387904d AM |
6751 | |
6752 | if (htab->tls_get_addr_fd == NULL | |
6753 | && h->oh != NULL | |
c4f68ce3 AM |
6754 | && h->oh->is_func_descriptor |
6755 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6756 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6757 | htab->tls_get_addr_fd = h->oh; |
6758 | } | |
6759 | ||
6760 | if (htab->tls_get_addr_fd != NULL) | |
6761 | { | |
6762 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6763 | ||
6764 | while (h->elf.root.type == bfd_link_hash_indirect | |
6765 | || h->elf.root.type == bfd_link_hash_warning) | |
6766 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6767 | ||
6768 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6769 | } |
6770 | ||
e1918d23 | 6771 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6772 | } |
411e1bfb | 6773 | |
951fd09b AM |
6774 | /* Run through all the TLS relocs looking for optimization |
6775 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6776 | a preliminary section layout so that we know the TLS segment | |
6777 | offsets. We can't optimize earlier because some optimizations need | |
6778 | to know the tp offset, and we need to optimize before allocating | |
6779 | dynamic relocations. */ | |
6780 | ||
6781 | bfd_boolean | |
4ce794b7 | 6782 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6783 | { |
6784 | bfd *ibfd; | |
6785 | asection *sec; | |
6786 | struct ppc_link_hash_table *htab; | |
102890f0 | 6787 | int pass; |
951fd09b | 6788 | |
1049f94e | 6789 | if (info->relocatable || info->shared) |
411e1bfb AM |
6790 | return TRUE; |
6791 | ||
951fd09b | 6792 | htab = ppc_hash_table (info); |
411e1bfb AM |
6793 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6794 | { | |
6795 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6796 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6797 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6798 | |
102890f0 AM |
6799 | /* Look at all the sections for this file. Make two passes over |
6800 | the relocs. On the first pass, mark toc entries involved | |
6801 | with tls relocs, and check that tls relocs involved in | |
6802 | setting up a tls_get_addr call are indeed followed by such a | |
6803 | call. If they are not, exclude them from the optimizations | |
6804 | done on the second pass. */ | |
6805 | for (pass = 0; pass < 2; ++pass) | |
6806 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6807 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6808 | { | |
6809 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 6810 | |
102890f0 AM |
6811 | /* Read the relocations. */ |
6812 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
6813 | info->keep_memory); | |
6814 | if (relstart == NULL) | |
6815 | return FALSE; | |
411e1bfb | 6816 | |
102890f0 AM |
6817 | relend = relstart + sec->reloc_count; |
6818 | for (rel = relstart; rel < relend; rel++) | |
6819 | { | |
6820 | enum elf_ppc64_reloc_type r_type; | |
6821 | unsigned long r_symndx; | |
6822 | struct elf_link_hash_entry *h; | |
6823 | Elf_Internal_Sym *sym; | |
6824 | asection *sym_sec; | |
6825 | char *tls_mask; | |
6826 | char tls_set, tls_clear, tls_type = 0; | |
6827 | bfd_vma value; | |
6828 | bfd_boolean ok_tprel, is_local; | |
6829 | long toc_ref_index = 0; | |
6830 | int expecting_tls_get_addr = 0; | |
411e1bfb | 6831 | |
102890f0 AM |
6832 | r_symndx = ELF64_R_SYM (rel->r_info); |
6833 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
6834 | r_symndx, ibfd)) | |
6835 | { | |
6836 | err_free_rel: | |
6837 | if (elf_section_data (sec)->relocs != relstart) | |
6838 | free (relstart); | |
6839 | if (toc_ref != NULL) | |
6840 | free (toc_ref); | |
6841 | if (locsyms != NULL | |
0ffa91dd | 6842 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
6843 | != (unsigned char *) locsyms)) |
6844 | free (locsyms); | |
6845 | return FALSE; | |
6846 | } | |
411e1bfb | 6847 | |
102890f0 AM |
6848 | if (h != NULL) |
6849 | { | |
6850 | if (h->root.type != bfd_link_hash_defined | |
6851 | && h->root.type != bfd_link_hash_defweak) | |
6852 | continue; | |
6853 | value = h->root.u.def.value; | |
6854 | } | |
6855 | else | |
6856 | /* Symbols referenced by TLS relocs must be of type | |
6857 | STT_TLS. So no need for .opd local sym adjust. */ | |
6858 | value = sym->st_value; | |
6859 | ||
6860 | ok_tprel = FALSE; | |
6861 | is_local = FALSE; | |
6862 | if (h == NULL | |
6863 | || !h->def_dynamic) | |
6864 | { | |
6865 | is_local = TRUE; | |
6866 | value += sym_sec->output_offset; | |
6867 | value += sym_sec->output_section->vma; | |
6868 | value -= htab->elf.tls_sec->vma; | |
6869 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
6870 | < (bfd_vma) 1 << 32); | |
6871 | } | |
951fd09b | 6872 | |
102890f0 AM |
6873 | r_type = ELF64_R_TYPE (rel->r_info); |
6874 | switch (r_type) | |
6875 | { | |
6876 | case R_PPC64_GOT_TLSLD16: | |
6877 | case R_PPC64_GOT_TLSLD16_LO: | |
6878 | expecting_tls_get_addr = 1; | |
6879 | /* Fall thru */ | |
6880 | ||
6881 | case R_PPC64_GOT_TLSLD16_HI: | |
6882 | case R_PPC64_GOT_TLSLD16_HA: | |
6883 | /* These relocs should never be against a symbol | |
6884 | defined in a shared lib. Leave them alone if | |
6885 | that turns out to be the case. */ | |
6886 | if (!is_local) | |
6887 | continue; | |
411e1bfb | 6888 | |
102890f0 | 6889 | /* LD -> LE */ |
411e1bfb | 6890 | tls_set = 0; |
102890f0 AM |
6891 | tls_clear = TLS_LD; |
6892 | tls_type = TLS_TLS | TLS_LD; | |
6893 | break; | |
411e1bfb | 6894 | |
102890f0 AM |
6895 | case R_PPC64_GOT_TLSGD16: |
6896 | case R_PPC64_GOT_TLSGD16_LO: | |
6897 | expecting_tls_get_addr = 1; | |
6898 | /* Fall thru */ | |
6899 | ||
6900 | case R_PPC64_GOT_TLSGD16_HI: | |
6901 | case R_PPC64_GOT_TLSGD16_HA: | |
6902 | if (ok_tprel) | |
6903 | /* GD -> LE */ | |
411e1bfb | 6904 | tls_set = 0; |
102890f0 AM |
6905 | else |
6906 | /* GD -> IE */ | |
6907 | tls_set = TLS_TLS | TLS_TPRELGD; | |
6908 | tls_clear = TLS_GD; | |
6909 | tls_type = TLS_TLS | TLS_GD; | |
6910 | break; | |
6911 | ||
6912 | case R_PPC64_GOT_TPREL16_DS: | |
6913 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6914 | case R_PPC64_GOT_TPREL16_HI: | |
6915 | case R_PPC64_GOT_TPREL16_HA: | |
6916 | if (ok_tprel) | |
6917 | { | |
6918 | /* IE -> LE */ | |
6919 | tls_set = 0; | |
6920 | tls_clear = TLS_TPREL; | |
6921 | tls_type = TLS_TLS | TLS_TPREL; | |
6922 | break; | |
6923 | } | |
411e1bfb AM |
6924 | continue; |
6925 | ||
102890f0 AM |
6926 | case R_PPC64_TOC16: |
6927 | case R_PPC64_TOC16_LO: | |
6928 | case R_PPC64_TLS: | |
6929 | if (sym_sec == NULL || sym_sec != toc) | |
6930 | continue; | |
6931 | ||
6932 | /* Mark this toc entry as referenced by a TLS | |
6933 | code sequence. We can do that now in the | |
6934 | case of R_PPC64_TLS, and after checking for | |
6935 | tls_get_addr for the TOC16 relocs. */ | |
6936 | if (toc_ref == NULL) | |
6937 | { | |
6938 | toc_ref = bfd_zmalloc (toc->size / 8); | |
6939 | if (toc_ref == NULL) | |
6940 | goto err_free_rel; | |
6941 | } | |
6942 | if (h != NULL) | |
6943 | value = h->root.u.def.value; | |
6944 | else | |
6945 | value = sym->st_value; | |
6946 | value += rel->r_addend; | |
6947 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
6948 | toc_ref_index = value / 8; | |
6949 | if (r_type == R_PPC64_TLS) | |
6950 | { | |
6951 | toc_ref[toc_ref_index] = 1; | |
6952 | continue; | |
6953 | } | |
6954 | ||
6955 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
6956 | continue; | |
6957 | ||
6958 | tls_set = 0; | |
6959 | tls_clear = 0; | |
6960 | expecting_tls_get_addr = 2; | |
6961 | break; | |
6962 | ||
6963 | case R_PPC64_TPREL64: | |
6964 | if (pass == 0 | |
6965 | || sec != toc | |
6966 | || toc_ref == NULL | |
6967 | || !toc_ref[rel->r_offset / 8]) | |
6968 | continue; | |
6969 | if (ok_tprel) | |
6970 | { | |
6971 | /* IE -> LE */ | |
6972 | tls_set = TLS_EXPLICIT; | |
6973 | tls_clear = TLS_TPREL; | |
6974 | break; | |
6975 | } | |
6976 | continue; | |
6977 | ||
6978 | case R_PPC64_DTPMOD64: | |
6979 | if (pass == 0 | |
6980 | || sec != toc | |
6981 | || toc_ref == NULL | |
6982 | || !toc_ref[rel->r_offset / 8]) | |
6983 | continue; | |
6984 | if (rel + 1 < relend | |
6985 | && (rel[1].r_info | |
6986 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6987 | && rel[1].r_offset == rel->r_offset + 8) | |
6988 | { | |
6989 | if (ok_tprel) | |
6990 | /* GD -> LE */ | |
6991 | tls_set = TLS_EXPLICIT | TLS_GD; | |
6992 | else | |
6993 | /* GD -> IE */ | |
6994 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
6995 | tls_clear = TLS_GD; | |
6996 | } | |
6997 | else | |
6998 | { | |
6999 | if (!is_local) | |
7000 | continue; | |
7001 | ||
7002 | /* LD -> LE */ | |
7003 | tls_set = TLS_EXPLICIT; | |
7004 | tls_clear = TLS_LD; | |
7005 | } | |
7006 | break; | |
7007 | ||
7008 | default: | |
7009 | continue; | |
7010 | } | |
7011 | ||
7012 | if (pass == 0) | |
7013 | { | |
7014 | if (!expecting_tls_get_addr) | |
7015 | continue; | |
7016 | ||
7017 | if (rel + 1 < relend) | |
7018 | { | |
7019 | Elf_Internal_Shdr *symtab_hdr; | |
7020 | enum elf_ppc64_reloc_type r_type2; | |
7021 | unsigned long r_symndx2; | |
7022 | struct elf_link_hash_entry *h2; | |
7023 | ||
0ffa91dd | 7024 | symtab_hdr = &elf_symtab_hdr (ibfd); |
102890f0 AM |
7025 | |
7026 | /* The next instruction should be a call to | |
7027 | __tls_get_addr. Peek at the reloc to be sure. */ | |
7028 | r_type2 = ELF64_R_TYPE (rel[1].r_info); | |
7029 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); | |
7030 | if (r_symndx2 >= symtab_hdr->sh_info | |
7031 | && (r_type2 == R_PPC64_REL14 | |
7032 | || r_type2 == R_PPC64_REL14_BRTAKEN | |
7033 | || r_type2 == R_PPC64_REL14_BRNTAKEN | |
7034 | || r_type2 == R_PPC64_REL24)) | |
7035 | { | |
7036 | struct elf_link_hash_entry **sym_hashes; | |
7037 | ||
7038 | sym_hashes = elf_sym_hashes (ibfd); | |
7039 | ||
7040 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
7041 | while (h2->root.type == bfd_link_hash_indirect | |
7042 | || h2->root.type == bfd_link_hash_warning) | |
7043 | h2 = ((struct elf_link_hash_entry *) | |
7044 | h2->root.u.i.link); | |
7045 | if (h2 != NULL | |
7046 | && (h2 == &htab->tls_get_addr->elf | |
7047 | || h2 == &htab->tls_get_addr_fd->elf)) | |
7048 | { | |
7049 | if (expecting_tls_get_addr == 2) | |
7050 | { | |
7051 | /* Check for toc tls entries. */ | |
7052 | char *toc_tls; | |
7053 | int retval; | |
7054 | ||
7055 | retval = get_tls_mask (&toc_tls, NULL, | |
7056 | &locsyms, | |
7057 | rel, ibfd); | |
7058 | if (retval == 0) | |
7059 | goto err_free_rel; | |
7060 | if (retval > 1 && toc_tls != NULL) | |
7061 | toc_ref[toc_ref_index] = 1; | |
7062 | } | |
7063 | continue; | |
7064 | } | |
7065 | } | |
7066 | } | |
7067 | ||
7068 | if (expecting_tls_get_addr != 1) | |
7069 | continue; | |
7070 | ||
7071 | /* Uh oh, we didn't find the expected call. We | |
7072 | could just mark this symbol to exclude it | |
7073 | from tls optimization but it's safer to skip | |
7074 | the entire section. */ | |
7075 | sec->has_tls_reloc = 0; | |
7076 | break; | |
7077 | } | |
7078 | ||
85f7a9cb | 7079 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7080 | { |
7081 | struct plt_entry *ent; | |
7082 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7083 | ent != NULL; | |
7084 | ent = ent->next) | |
7085 | if (ent->addend == 0) | |
411e1bfb | 7086 | { |
102890f0 | 7087 | if (ent->plt.refcount > 0) |
30038c59 | 7088 | { |
102890f0 AM |
7089 | ent->plt.refcount -= 1; |
7090 | expecting_tls_get_addr = 0; | |
30038c59 | 7091 | } |
102890f0 | 7092 | break; |
411e1bfb | 7093 | } |
102890f0 | 7094 | } |
411e1bfb | 7095 | |
85f7a9cb | 7096 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7097 | { |
7098 | struct plt_entry *ent; | |
7099 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7100 | ent != NULL; | |
7101 | ent = ent->next) | |
7102 | if (ent->addend == 0) | |
411e1bfb | 7103 | { |
102890f0 AM |
7104 | if (ent->plt.refcount > 0) |
7105 | ent->plt.refcount -= 1; | |
7106 | break; | |
411e1bfb | 7107 | } |
102890f0 | 7108 | } |
411e1bfb | 7109 | |
102890f0 | 7110 | if (tls_clear == 0) |
30038c59 AM |
7111 | continue; |
7112 | ||
102890f0 AM |
7113 | if ((tls_set & TLS_EXPLICIT) == 0) |
7114 | { | |
7115 | struct got_entry *ent; | |
411e1bfb | 7116 | |
102890f0 AM |
7117 | /* Adjust got entry for this reloc. */ |
7118 | if (h != NULL) | |
7119 | ent = h->got.glist; | |
7120 | else | |
7121 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7122 | |
102890f0 AM |
7123 | for (; ent != NULL; ent = ent->next) |
7124 | if (ent->addend == rel->r_addend | |
7125 | && ent->owner == ibfd | |
7126 | && ent->tls_type == tls_type) | |
7127 | break; | |
7128 | if (ent == NULL) | |
7129 | abort (); | |
411e1bfb | 7130 | |
102890f0 AM |
7131 | if (tls_set == 0) |
7132 | { | |
7133 | /* We managed to get rid of a got entry. */ | |
7134 | if (ent->got.refcount > 0) | |
7135 | ent->got.refcount -= 1; | |
7136 | } | |
7137 | } | |
7138 | else | |
7139 | { | |
7140 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7141 | we'll lose one or two dyn relocs. */ | |
7142 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7143 | NULL, h, sym_sec)) | |
7144 | return FALSE; | |
411e1bfb | 7145 | |
102890f0 AM |
7146 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7147 | { | |
7148 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7149 | NULL, h, sym_sec)) | |
7150 | return FALSE; | |
7151 | } | |
7152 | } | |
411e1bfb | 7153 | |
102890f0 AM |
7154 | *tls_mask |= tls_set; |
7155 | *tls_mask &= ~tls_clear; | |
7156 | } | |
8c1d1bb8 | 7157 | |
102890f0 AM |
7158 | if (elf_section_data (sec)->relocs != relstart) |
7159 | free (relstart); | |
7160 | } | |
411e1bfb | 7161 | |
102890f0 AM |
7162 | if (toc_ref != NULL) |
7163 | free (toc_ref); | |
411e1bfb | 7164 | |
102890f0 | 7165 | if (locsyms != NULL |
0ffa91dd | 7166 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) |
102890f0 AM |
7167 | { |
7168 | if (!info->keep_memory) | |
7169 | free (locsyms); | |
7170 | else | |
0ffa91dd | 7171 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; |
411e1bfb | 7172 | } |
102890f0 | 7173 | } |
b34976b6 | 7174 | return TRUE; |
1e2f5b6e | 7175 | } |
b34976b6 | 7176 | |
c5614fa4 AM |
7177 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7178 | the values of any global symbols in a toc section that has been | |
7179 | edited. Globals in toc sections should be a rarity, so this function | |
7180 | sets a flag if any are found in toc sections other than the one just | |
7181 | edited, so that futher hash table traversals can be avoided. */ | |
7182 | ||
7183 | struct adjust_toc_info | |
7184 | { | |
7185 | asection *toc; | |
7186 | unsigned long *skip; | |
7187 | bfd_boolean global_toc_syms; | |
7188 | }; | |
7189 | ||
7190 | static bfd_boolean | |
7191 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7192 | { | |
7193 | struct ppc_link_hash_entry *eh; | |
7194 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7195 | ||
7196 | if (h->root.type == bfd_link_hash_indirect) | |
7197 | return TRUE; | |
7198 | ||
7199 | if (h->root.type == bfd_link_hash_warning) | |
7200 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7201 | ||
7202 | if (h->root.type != bfd_link_hash_defined | |
7203 | && h->root.type != bfd_link_hash_defweak) | |
7204 | return TRUE; | |
7205 | ||
7206 | eh = (struct ppc_link_hash_entry *) h; | |
7207 | if (eh->adjust_done) | |
7208 | return TRUE; | |
7209 | ||
7210 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7211 | { | |
7212 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7213 | if (skip != (unsigned long) -1) | |
7214 | eh->elf.root.u.def.value -= skip; | |
7215 | else | |
7216 | { | |
7217 | (*_bfd_error_handler) | |
7218 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7219 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7220 | eh->elf.root.u.def.value = 0; | |
7221 | } | |
7222 | eh->adjust_done = 1; | |
7223 | } | |
7224 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7225 | toc_inf->global_toc_syms = TRUE; | |
7226 | ||
7227 | return TRUE; | |
7228 | } | |
7229 | ||
7230 | /* Examine all relocs referencing .toc sections in order to remove | |
7231 | unused .toc entries. */ | |
7232 | ||
7233 | bfd_boolean | |
7234 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7235 | { | |
7236 | bfd *ibfd; | |
7237 | struct adjust_toc_info toc_inf; | |
7238 | ||
7239 | toc_inf.global_toc_syms = TRUE; | |
7240 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7241 | { | |
7242 | asection *toc, *sec; | |
7243 | Elf_Internal_Shdr *symtab_hdr; | |
7244 | Elf_Internal_Sym *local_syms; | |
7245 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7246 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7247 | unsigned long *skip, *drop; |
7248 | unsigned char *used; | |
7249 | unsigned char *keep, last, some_unused; | |
7250 | ||
7251 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7252 | if (toc == NULL | |
92b7a70f | 7253 | || toc->size == 0 |
c5614fa4 AM |
7254 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7255 | || elf_discarded_section (toc)) | |
7256 | continue; | |
7257 | ||
7258 | local_syms = NULL; | |
0ffa91dd | 7259 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7260 | sym_hashes = elf_sym_hashes (ibfd); |
7261 | ||
7262 | /* Look at sections dropped from the final link. */ | |
7263 | skip = NULL; | |
7264 | relstart = NULL; | |
7265 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7266 | { | |
7267 | if (sec->reloc_count == 0 | |
7268 | || !elf_discarded_section (sec) | |
7269 | || get_opd_info (sec) | |
7270 | || (sec->flags & SEC_ALLOC) == 0 | |
7271 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7272 | continue; | |
7273 | ||
7274 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7275 | if (relstart == NULL) | |
7276 | goto error_ret; | |
7277 | ||
7278 | /* Run through the relocs to see which toc entries might be | |
7279 | unused. */ | |
7280 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7281 | { | |
7282 | enum elf_ppc64_reloc_type r_type; | |
7283 | unsigned long r_symndx; | |
7284 | asection *sym_sec; | |
7285 | struct elf_link_hash_entry *h; | |
7286 | Elf_Internal_Sym *sym; | |
7287 | bfd_vma val; | |
7288 | ||
7289 | r_type = ELF64_R_TYPE (rel->r_info); | |
7290 | switch (r_type) | |
7291 | { | |
7292 | default: | |
7293 | continue; | |
7294 | ||
7295 | case R_PPC64_TOC16: | |
7296 | case R_PPC64_TOC16_LO: | |
7297 | case R_PPC64_TOC16_HI: | |
7298 | case R_PPC64_TOC16_HA: | |
7299 | case R_PPC64_TOC16_DS: | |
7300 | case R_PPC64_TOC16_LO_DS: | |
7301 | break; | |
7302 | } | |
7303 | ||
7304 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7305 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7306 | r_symndx, ibfd)) | |
7307 | goto error_ret; | |
7308 | ||
7309 | if (sym_sec != toc) | |
7310 | continue; | |
7311 | ||
7312 | if (h != NULL) | |
7313 | val = h->root.u.def.value; | |
7314 | else | |
7315 | val = sym->st_value; | |
7316 | val += rel->r_addend; | |
7317 | ||
7318 | if (val >= toc->size) | |
7319 | continue; | |
7320 | ||
7321 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7322 | If not, don't mark as unused. */ | |
7323 | if (val & 7) | |
7324 | continue; | |
7325 | ||
7326 | if (skip == NULL) | |
7327 | { | |
7328 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7329 | if (skip == NULL) | |
7330 | goto error_ret; | |
7331 | } | |
7332 | ||
7333 | skip[val >> 3] = 1; | |
7334 | } | |
7335 | ||
7336 | if (elf_section_data (sec)->relocs != relstart) | |
7337 | free (relstart); | |
7338 | } | |
7339 | ||
7340 | if (skip == NULL) | |
7341 | continue; | |
7342 | ||
7343 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7344 | if (used == NULL) | |
7345 | { | |
7346 | error_ret: | |
7347 | if (local_syms != NULL | |
7348 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7349 | free (local_syms); | |
7350 | if (sec != NULL | |
7351 | && relstart != NULL | |
7352 | && elf_section_data (sec)->relocs != relstart) | |
7353 | free (relstart); | |
7354 | if (skip != NULL) | |
7355 | free (skip); | |
7356 | return FALSE; | |
7357 | } | |
7358 | ||
30038c59 AM |
7359 | /* Now check all kept sections that might reference the toc. |
7360 | Check the toc itself last. */ | |
7361 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7362 | : ibfd->sections); | |
c5614fa4 | 7363 | sec != NULL; |
c5614fa4 | 7364 | sec = (sec == toc ? NULL |
c5614fa4 | 7365 | : sec->next == NULL ? toc |
30038c59 | 7366 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7367 | : sec->next)) |
7368 | { | |
7369 | int repeat; | |
7370 | ||
7371 | if (sec->reloc_count == 0 | |
7372 | || elf_discarded_section (sec) | |
7373 | || get_opd_info (sec) | |
7374 | || (sec->flags & SEC_ALLOC) == 0 | |
7375 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7376 | continue; | |
7377 | ||
7378 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7379 | if (relstart == NULL) | |
7380 | goto error_ret; | |
7381 | ||
7382 | /* Mark toc entries referenced as used. */ | |
7383 | repeat = 0; | |
7384 | do | |
7385 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7386 | { | |
7387 | enum elf_ppc64_reloc_type r_type; | |
7388 | unsigned long r_symndx; | |
7389 | asection *sym_sec; | |
7390 | struct elf_link_hash_entry *h; | |
7391 | Elf_Internal_Sym *sym; | |
7392 | bfd_vma val; | |
7393 | ||
7394 | r_type = ELF64_R_TYPE (rel->r_info); | |
7395 | switch (r_type) | |
7396 | { | |
7397 | case R_PPC64_TOC16: | |
7398 | case R_PPC64_TOC16_LO: | |
7399 | case R_PPC64_TOC16_HI: | |
7400 | case R_PPC64_TOC16_HA: | |
7401 | case R_PPC64_TOC16_DS: | |
7402 | case R_PPC64_TOC16_LO_DS: | |
7403 | /* In case we're taking addresses of toc entries. */ | |
7404 | case R_PPC64_ADDR64: | |
7405 | break; | |
7406 | ||
7407 | default: | |
7408 | continue; | |
7409 | } | |
7410 | ||
7411 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7412 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7413 | r_symndx, ibfd)) | |
7414 | { | |
7415 | free (used); | |
7416 | goto error_ret; | |
7417 | } | |
7418 | ||
7419 | if (sym_sec != toc) | |
7420 | continue; | |
7421 | ||
7422 | if (h != NULL) | |
7423 | val = h->root.u.def.value; | |
7424 | else | |
7425 | val = sym->st_value; | |
7426 | val += rel->r_addend; | |
7427 | ||
7428 | if (val >= toc->size) | |
7429 | continue; | |
7430 | ||
7431 | /* For the toc section, we only mark as used if | |
7432 | this entry itself isn't unused. */ | |
7433 | if (sec == toc | |
7434 | && !used[val >> 3] | |
7435 | && (used[rel->r_offset >> 3] | |
7436 | || !skip[rel->r_offset >> 3])) | |
7437 | /* Do all the relocs again, to catch reference | |
7438 | chains. */ | |
7439 | repeat = 1; | |
7440 | ||
7441 | used[val >> 3] = 1; | |
7442 | } | |
7443 | while (repeat); | |
7444 | } | |
7445 | ||
7446 | /* Merge the used and skip arrays. Assume that TOC | |
7447 | doublewords not appearing as either used or unused belong | |
7448 | to to an entry more than one doubleword in size. */ | |
7449 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7450 | drop < skip + (toc->size + 7) / 8; | |
7451 | ++drop, ++keep) | |
7452 | { | |
7453 | if (*keep) | |
7454 | { | |
7455 | *drop = 0; | |
7456 | last = 0; | |
7457 | } | |
7458 | else if (*drop) | |
7459 | { | |
7460 | some_unused = 1; | |
7461 | last = 1; | |
7462 | } | |
7463 | else | |
7464 | *drop = last; | |
7465 | } | |
7466 | ||
7467 | free (used); | |
7468 | ||
7469 | if (some_unused) | |
7470 | { | |
7471 | bfd_byte *contents, *src; | |
7472 | unsigned long off; | |
7473 | ||
7474 | /* Shuffle the toc contents, and at the same time convert the | |
7475 | skip array from booleans into offsets. */ | |
7476 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7477 | goto error_ret; | |
7478 | ||
7479 | elf_section_data (toc)->this_hdr.contents = contents; | |
7480 | ||
7481 | for (src = contents, off = 0, drop = skip; | |
7482 | src < contents + toc->size; | |
7483 | src += 8, ++drop) | |
7484 | { | |
7485 | if (*drop) | |
7486 | { | |
7487 | *drop = (unsigned long) -1; | |
7488 | off += 8; | |
7489 | } | |
7490 | else if (off != 0) | |
7491 | { | |
7492 | *drop = off; | |
7493 | memcpy (src - off, src, 8); | |
7494 | } | |
7495 | } | |
7496 | toc->rawsize = toc->size; | |
7497 | toc->size = src - contents - off; | |
7498 | ||
92b7a70f AM |
7499 | if (toc->reloc_count != 0) |
7500 | { | |
7501 | Elf_Internal_Rela *wrel; | |
7502 | bfd_size_type sz; | |
c5614fa4 | 7503 | |
92b7a70f AM |
7504 | /* Read toc relocs. */ |
7505 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7506 | TRUE); | |
7507 | if (relstart == NULL) | |
7508 | goto error_ret; | |
7509 | ||
7510 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7511 | wrel = relstart; | |
7512 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7513 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7514 | { | |
7515 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7516 | wrel->r_info = rel->r_info; | |
7517 | wrel->r_addend = rel->r_addend; | |
7518 | ++wrel; | |
7519 | } | |
8c1d1bb8 AM |
7520 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7521 | &local_syms, NULL, NULL)) | |
7522 | goto error_ret; | |
35090471 | 7523 | |
92b7a70f AM |
7524 | toc->reloc_count = wrel - relstart; |
7525 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7526 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7527 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7528 | } | |
c5614fa4 AM |
7529 | |
7530 | /* Adjust addends for relocs against the toc section sym. */ | |
7531 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7532 | { | |
7533 | if (sec->reloc_count == 0 | |
7534 | || elf_discarded_section (sec)) | |
7535 | continue; | |
7536 | ||
7537 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7538 | TRUE); | |
7539 | if (relstart == NULL) | |
7540 | goto error_ret; | |
7541 | ||
7542 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7543 | { | |
7544 | enum elf_ppc64_reloc_type r_type; | |
7545 | unsigned long r_symndx; | |
7546 | asection *sym_sec; | |
7547 | struct elf_link_hash_entry *h; | |
7548 | Elf_Internal_Sym *sym; | |
7549 | ||
7550 | r_type = ELF64_R_TYPE (rel->r_info); | |
7551 | switch (r_type) | |
7552 | { | |
7553 | default: | |
7554 | continue; | |
7555 | ||
7556 | case R_PPC64_TOC16: | |
7557 | case R_PPC64_TOC16_LO: | |
7558 | case R_PPC64_TOC16_HI: | |
7559 | case R_PPC64_TOC16_HA: | |
7560 | case R_PPC64_TOC16_DS: | |
7561 | case R_PPC64_TOC16_LO_DS: | |
7562 | case R_PPC64_ADDR64: | |
7563 | break; | |
7564 | } | |
7565 | ||
7566 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7567 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7568 | r_symndx, ibfd)) | |
7569 | goto error_ret; | |
7570 | ||
7571 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7572 | continue; | |
7573 | ||
7574 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7575 | } | |
7576 | } | |
7577 | ||
7578 | /* We shouldn't have local or global symbols defined in the TOC, | |
7579 | but handle them anyway. */ | |
7580 | if (local_syms != NULL) | |
7581 | { | |
7582 | Elf_Internal_Sym *sym; | |
7583 | ||
7584 | for (sym = local_syms; | |
7585 | sym < local_syms + symtab_hdr->sh_info; | |
7586 | ++sym) | |
7587 | if (sym->st_shndx != SHN_UNDEF | |
7588 | && (sym->st_shndx < SHN_LORESERVE | |
7589 | || sym->st_shndx > SHN_HIRESERVE) | |
7590 | && sym->st_value != 0 | |
7591 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7592 | { | |
7593 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7594 | sym->st_value -= skip[sym->st_value >> 3]; | |
7595 | else | |
7596 | { | |
7597 | (*_bfd_error_handler) | |
7598 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7599 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7600 | NULL)); | |
c5614fa4 AM |
7601 | sym->st_value = 0; |
7602 | sym->st_shndx = SHN_ABS; | |
7603 | } | |
7604 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7605 | } | |
7606 | } | |
7607 | ||
7608 | /* Finally, adjust any global syms defined in the toc. */ | |
7609 | if (toc_inf.global_toc_syms) | |
7610 | { | |
7611 | toc_inf.toc = toc; | |
7612 | toc_inf.skip = skip; | |
7613 | toc_inf.global_toc_syms = FALSE; | |
7614 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7615 | &toc_inf); | |
7616 | } | |
7617 | } | |
7618 | ||
7619 | if (local_syms != NULL | |
7620 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7621 | { | |
7622 | if (!info->keep_memory) | |
7623 | free (local_syms); | |
7624 | else | |
7625 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7626 | } | |
7627 | free (skip); | |
7628 | } | |
7629 | ||
7630 | return TRUE; | |
7631 | } | |
7632 | ||
65f38f15 AM |
7633 | /* Allocate space in .plt, .got and associated reloc sections for |
7634 | dynamic relocs. */ | |
5bd4f169 | 7635 | |
b34976b6 | 7636 | static bfd_boolean |
4ce794b7 | 7637 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7638 | { |
65f38f15 AM |
7639 | struct bfd_link_info *info; |
7640 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7641 | asection *s; |
65f38f15 AM |
7642 | struct ppc_link_hash_entry *eh; |
7643 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7644 | struct got_entry *gent; |
5bd4f169 | 7645 | |
e92d460e | 7646 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7647 | return TRUE; |
5bd4f169 | 7648 | |
e92d460e AM |
7649 | if (h->root.type == bfd_link_hash_warning) |
7650 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7651 | ||
65f38f15 AM |
7652 | info = (struct bfd_link_info *) inf; |
7653 | htab = ppc_hash_table (info); | |
5bd4f169 | 7654 | |
65f38f15 | 7655 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7656 | && h->dynindx != -1 |
9c7a29a3 | 7657 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7658 | { |
411e1bfb AM |
7659 | struct plt_entry *pent; |
7660 | bfd_boolean doneone = FALSE; | |
7661 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7662 | if (pent->plt.refcount > 0) | |
7663 | { | |
411e1bfb AM |
7664 | /* If this is the first .plt entry, make room for the special |
7665 | first entry. */ | |
4ce794b7 | 7666 | s = htab->plt; |
eea6121a AM |
7667 | if (s->size == 0) |
7668 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7669 | |
eea6121a | 7670 | pent->plt.offset = s->size; |
411e1bfb AM |
7671 | |
7672 | /* Make room for this entry. */ | |
eea6121a | 7673 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7674 | |
7675 | /* Make room for the .glink code. */ | |
4ce794b7 | 7676 | s = htab->glink; |
eea6121a AM |
7677 | if (s->size == 0) |
7678 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7679 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7680 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7681 | s->size += 4; | |
7682 | s->size += 2*4; | |
411e1bfb AM |
7683 | |
7684 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7685 | s = htab->relplt; |
eea6121a | 7686 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7687 | doneone = TRUE; |
7688 | } | |
7689 | else | |
7690 | pent->plt.offset = (bfd_vma) -1; | |
7691 | if (!doneone) | |
65f38f15 | 7692 | { |
411e1bfb | 7693 | h->plt.plist = NULL; |
f5385ebf | 7694 | h->needs_plt = 0; |
65f38f15 AM |
7695 | } |
7696 | } | |
7697 | else | |
7698 | { | |
411e1bfb | 7699 | h->plt.plist = NULL; |
f5385ebf | 7700 | h->needs_plt = 0; |
65f38f15 AM |
7701 | } |
7702 | ||
951fd09b AM |
7703 | eh = (struct ppc_link_hash_entry *) h; |
7704 | /* Run through the TLS GD got entries first if we're changing them | |
7705 | to TPREL. */ | |
e7b938ca | 7706 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7707 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7708 | if (gent->got.refcount > 0 | |
7709 | && (gent->tls_type & TLS_GD) != 0) | |
7710 | { | |
7711 | /* This was a GD entry that has been converted to TPREL. If | |
7712 | there happens to be a TPREL entry we can use that one. */ | |
7713 | struct got_entry *ent; | |
7714 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7715 | if (ent->got.refcount > 0 | |
7716 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7717 | && ent->addend == gent->addend |
7718 | && ent->owner == gent->owner) | |
951fd09b AM |
7719 | { |
7720 | gent->got.refcount = 0; | |
7721 | break; | |
7722 | } | |
7723 | ||
7724 | /* If not, then we'll be using our own TPREL entry. */ | |
7725 | if (gent->got.refcount != 0) | |
7726 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7727 | } | |
7728 | ||
411e1bfb AM |
7729 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7730 | if (gent->got.refcount > 0) | |
7731 | { | |
951fd09b AM |
7732 | bfd_boolean dyn; |
7733 | ||
411e1bfb | 7734 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7735 | Undefined weak syms won't yet be marked as dynamic, |
7736 | nor will all TLS symbols. */ | |
411e1bfb | 7737 | if (h->dynindx == -1 |
f5385ebf | 7738 | && !h->forced_local) |
411e1bfb | 7739 | { |
c152c796 | 7740 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7741 | return FALSE; |
7742 | } | |
65f38f15 | 7743 | |
d881513a | 7744 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7745 | && !h->def_dynamic) |
411e1bfb | 7746 | { |
102890f0 AM |
7747 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
7748 | gent->got.offset = (bfd_vma) -1; | |
951fd09b | 7749 | continue; |
411e1bfb | 7750 | } |
951fd09b | 7751 | |
0ffa91dd NC |
7752 | if (! is_ppc64_elf_target (gent->owner->xvec)) |
7753 | continue; | |
7754 | ||
e717da7e | 7755 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7756 | gent->got.offset = s->size; |
7757 | s->size | |
d881513a | 7758 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7759 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7760 | if ((info->shared |
7761 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7762 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7763 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7764 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7765 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7766 | ? 2 * sizeof (Elf64_External_Rela) |
7767 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7768 | } |
7769 | else | |
7770 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7771 | |
65f38f15 | 7772 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7773 | return TRUE; |
65f38f15 AM |
7774 | |
7775 | /* In the shared -Bsymbolic case, discard space allocated for | |
7776 | dynamic pc-relative relocs against symbols which turn out to be | |
7777 | defined in regular objects. For the normal shared case, discard | |
7778 | space for relocs that have become local due to symbol visibility | |
7779 | changes. */ | |
7780 | ||
7781 | if (info->shared) | |
7782 | { | |
9c7a29a3 AM |
7783 | /* Relocs that use pc_count are those that appear on a call insn, |
7784 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7785 | generated via assembly. We want calls to protected symbols to | |
7786 | resolve directly to the function rather than going via the plt. | |
7787 | If people want function pointer comparisons to work as expected | |
7788 | then they should avoid writing weird assembly. */ | |
09695f56 | 7789 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7790 | { |
7791 | struct ppc_dyn_relocs **pp; | |
7792 | ||
7793 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7794 | { |
65f38f15 AM |
7795 | p->count -= p->pc_count; |
7796 | p->pc_count = 0; | |
7797 | if (p->count == 0) | |
7798 | *pp = p->next; | |
7799 | else | |
7800 | pp = &p->next; | |
5bd4f169 | 7801 | } |
65f38f15 | 7802 | } |
4e795f50 AM |
7803 | |
7804 | /* Also discard relocs on undefined weak syms with non-default | |
7805 | visibility. */ | |
cab87ef9 AM |
7806 | if (eh->dyn_relocs != NULL |
7807 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7808 | { |
7809 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7810 | eh->dyn_relocs = NULL; | |
7811 | ||
7812 | /* Make sure this symbol is output as a dynamic symbol. | |
7813 | Undefined weak syms won't yet be marked as dynamic. */ | |
7814 | else if (h->dynindx == -1 | |
7815 | && !h->forced_local) | |
7816 | { | |
7817 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7818 | return FALSE; | |
7819 | } | |
7820 | } | |
65f38f15 | 7821 | } |
f4656909 | 7822 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7823 | { |
7824 | /* For the non-shared case, discard space for relocs against | |
7825 | symbols which turn out to need copy relocs or are not | |
7826 | dynamic. */ | |
7827 | ||
f5385ebf AM |
7828 | if (!h->non_got_ref |
7829 | && h->def_dynamic | |
7830 | && !h->def_regular) | |
65f38f15 AM |
7831 | { |
7832 | /* Make sure this symbol is output as a dynamic symbol. | |
7833 | Undefined weak syms won't yet be marked as dynamic. */ | |
7834 | if (h->dynindx == -1 | |
f5385ebf | 7835 | && !h->forced_local) |
65f38f15 | 7836 | { |
c152c796 | 7837 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7838 | return FALSE; |
65f38f15 AM |
7839 | } |
7840 | ||
7841 | /* If that succeeded, we know we'll be keeping all the | |
7842 | relocs. */ | |
7843 | if (h->dynindx != -1) | |
7844 | goto keep; | |
7845 | } | |
7846 | ||
7847 | eh->dyn_relocs = NULL; | |
7848 | ||
ec338859 | 7849 | keep: ; |
65f38f15 AM |
7850 | } |
7851 | ||
7852 | /* Finally, allocate space. */ | |
7853 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7854 | { | |
7855 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7856 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7857 | } |
7858 | ||
b34976b6 | 7859 | return TRUE; |
65f38f15 AM |
7860 | } |
7861 | ||
7862 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7863 | ||
b34976b6 | 7864 | static bfd_boolean |
4ce794b7 | 7865 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7866 | { |
7867 | struct ppc_link_hash_entry *eh; | |
7868 | struct ppc_dyn_relocs *p; | |
7869 | ||
e92d460e AM |
7870 | if (h->root.type == bfd_link_hash_warning) |
7871 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7872 | ||
65f38f15 AM |
7873 | eh = (struct ppc_link_hash_entry *) h; |
7874 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7875 | { | |
7876 | asection *s = p->sec->output_section; | |
7877 | ||
7878 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7879 | { | |
4ce794b7 | 7880 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7881 | |
7882 | info->flags |= DF_TEXTREL; | |
7883 | ||
7884 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7885 | return FALSE; |
65f38f15 AM |
7886 | } |
7887 | } | |
b34976b6 | 7888 | return TRUE; |
65f38f15 AM |
7889 | } |
7890 | ||
7891 | /* Set the sizes of the dynamic sections. */ | |
7892 | ||
b34976b6 | 7893 | static bfd_boolean |
4ce794b7 AM |
7894 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7895 | struct bfd_link_info *info) | |
65f38f15 AM |
7896 | { |
7897 | struct ppc_link_hash_table *htab; | |
7898 | bfd *dynobj; | |
7899 | asection *s; | |
b34976b6 | 7900 | bfd_boolean relocs; |
65f38f15 AM |
7901 | bfd *ibfd; |
7902 | ||
7903 | htab = ppc_hash_table (info); | |
7904 | dynobj = htab->elf.dynobj; | |
7905 | if (dynobj == NULL) | |
7906 | abort (); | |
7907 | ||
7908 | if (htab->elf.dynamic_sections_created) | |
7909 | { | |
7910 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7911 | if (info->executable) |
65f38f15 AM |
7912 | { |
7913 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7914 | if (s == NULL) | |
7915 | abort (); | |
eea6121a | 7916 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7917 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7918 | } | |
7919 | } | |
7920 | ||
7921 | /* Set up .got offsets for local syms, and space for local dynamic | |
7922 | relocs. */ | |
7923 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7924 | { | |
411e1bfb AM |
7925 | struct got_entry **lgot_ents; |
7926 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7927 | char *lgot_masks; |
65f38f15 AM |
7928 | bfd_size_type locsymcount; |
7929 | Elf_Internal_Shdr *symtab_hdr; | |
7930 | asection *srel; | |
7931 | ||
ee75fd95 | 7932 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7933 | continue; |
7934 | ||
7935 | for (s = ibfd->sections; s != NULL; s = s->next) | |
7936 | { | |
ec338859 | 7937 | struct ppc_dyn_relocs *p; |
65f38f15 | 7938 | |
6edfbbad | 7939 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7940 | { |
ec338859 AM |
7941 | if (!bfd_is_abs_section (p->sec) |
7942 | && bfd_is_abs_section (p->sec->output_section)) | |
7943 | { | |
7944 | /* Input section has been discarded, either because | |
7945 | it is a copy of a linkonce section or due to | |
7946 | linker script /DISCARD/, so we'll be discarding | |
7947 | the relocs too. */ | |
7948 | } | |
248866a8 | 7949 | else if (p->count != 0) |
ec338859 AM |
7950 | { |
7951 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7952 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7953 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7954 | info->flags |= DF_TEXTREL; | |
ec338859 | 7955 | } |
65f38f15 AM |
7956 | } |
7957 | } | |
7958 | ||
411e1bfb AM |
7959 | lgot_ents = elf_local_got_ents (ibfd); |
7960 | if (!lgot_ents) | |
65f38f15 AM |
7961 | continue; |
7962 | ||
0ffa91dd | 7963 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 7964 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 7965 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7966 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7967 | s = ppc64_elf_tdata (ibfd)->got; |
7968 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7969 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7970 | { |
411e1bfb AM |
7971 | struct got_entry *ent; |
7972 | ||
7973 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7974 | if (ent->got.refcount > 0) | |
7975 | { | |
e7b938ca | 7976 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7977 | { |
102890f0 AM |
7978 | ppc64_tlsld_got (ibfd)->refcount += 1; |
7979 | ent->got.offset = (bfd_vma) -1; | |
411e1bfb AM |
7980 | } |
7981 | else | |
7982 | { | |
eea6121a | 7983 | ent->got.offset = s->size; |
e7b938ca | 7984 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7985 | { |
eea6121a | 7986 | s->size += 16; |
411e1bfb | 7987 | if (info->shared) |
eea6121a | 7988 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7989 | } |
7990 | else | |
7991 | { | |
eea6121a | 7992 | s->size += 8; |
411e1bfb | 7993 | if (info->shared) |
eea6121a | 7994 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7995 | } |
7996 | } | |
7997 | } | |
7998 | else | |
7999 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
8000 | } |
8001 | } | |
8002 | ||
8003 | /* Allocate global sym .plt and .got entries, and space for global | |
8004 | sym dynamic relocs. */ | |
4ce794b7 | 8005 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8006 | |
102890f0 AM |
8007 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8008 | { | |
8009 | if (!is_ppc64_elf_target (ibfd->xvec)) | |
8010 | continue; | |
8011 | ||
8012 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
8013 | { | |
8014 | s = ppc64_elf_tdata (ibfd)->got; | |
8015 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
8016 | s->size += 16; | |
8017 | if (info->shared) | |
8018 | { | |
8019 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8020 | srel->size += sizeof (Elf64_External_Rela); | |
8021 | } | |
8022 | } | |
8023 | else | |
8024 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
8025 | } | |
8026 | ||
65f38f15 AM |
8027 | /* We now have determined the sizes of the various dynamic sections. |
8028 | Allocate memory for them. */ | |
b34976b6 | 8029 | relocs = FALSE; |
65f38f15 AM |
8030 | for (s = dynobj->sections; s != NULL; s = s->next) |
8031 | { | |
8032 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8033 | continue; | |
8034 | ||
4ce794b7 | 8035 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8036 | /* These haven't been allocated yet; don't strip. */ |
8037 | continue; | |
e717da7e AM |
8038 | else if (s == htab->got |
8039 | || s == htab->plt | |
c456f082 AM |
8040 | || s == htab->glink |
8041 | || s == htab->dynbss) | |
65f38f15 AM |
8042 | { |
8043 | /* Strip this section if we don't need it; see the | |
8044 | comment below. */ | |
5bd4f169 | 8045 | } |
0112cd26 | 8046 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8047 | { |
c456f082 | 8048 | if (s->size != 0) |
5bd4f169 | 8049 | { |
4ce794b7 | 8050 | if (s != htab->relplt) |
b34976b6 | 8051 | relocs = TRUE; |
5bd4f169 AM |
8052 | |
8053 | /* We use the reloc_count field as a counter if we need | |
8054 | to copy relocs into the output file. */ | |
8055 | s->reloc_count = 0; | |
8056 | } | |
8057 | } | |
65f38f15 | 8058 | else |
5bd4f169 AM |
8059 | { |
8060 | /* It's not one of our sections, so don't allocate space. */ | |
8061 | continue; | |
8062 | } | |
8063 | ||
eea6121a | 8064 | if (s->size == 0) |
5bd4f169 | 8065 | { |
c456f082 AM |
8066 | /* If we don't need this section, strip it from the |
8067 | output file. This is mostly to handle .rela.bss and | |
8068 | .rela.plt. We must create both sections in | |
8069 | create_dynamic_sections, because they must be created | |
8070 | before the linker maps input sections to output | |
8071 | sections. The linker does that before | |
8072 | adjust_dynamic_symbol is called, and it is that | |
8073 | function which decides whether anything needs to go | |
8074 | into these sections. */ | |
8423293d | 8075 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8076 | continue; |
8077 | } | |
8078 | ||
c456f082 | 8079 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8080 | continue; |
8081 | ||
65f38f15 AM |
8082 | /* Allocate memory for the section contents. We use bfd_zalloc |
8083 | here in case unused entries are not reclaimed before the | |
8084 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8085 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8086 | sections instead of garbage. | |
8087 | We also rely on the section contents being zero when writing | |
8088 | the GOT. */ | |
eea6121a | 8089 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8090 | if (s->contents == NULL) |
b34976b6 | 8091 | return FALSE; |
5bd4f169 AM |
8092 | } |
8093 | ||
e717da7e AM |
8094 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8095 | { | |
ee75fd95 | 8096 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
8097 | continue; |
8098 | ||
e717da7e AM |
8099 | s = ppc64_elf_tdata (ibfd)->got; |
8100 | if (s != NULL && s != htab->got) | |
8101 | { | |
eea6121a | 8102 | if (s->size == 0) |
8423293d | 8103 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8104 | else |
8105 | { | |
eea6121a | 8106 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8107 | if (s->contents == NULL) |
8108 | return FALSE; | |
8109 | } | |
8110 | } | |
8111 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8112 | if (s != NULL) | |
8113 | { | |
eea6121a | 8114 | if (s->size == 0) |
8423293d | 8115 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8116 | else |
8117 | { | |
eea6121a | 8118 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8119 | if (s->contents == NULL) |
8120 | return FALSE; | |
8121 | relocs = TRUE; | |
8122 | s->reloc_count = 0; | |
8123 | } | |
8124 | } | |
8125 | } | |
8126 | ||
e86ce104 | 8127 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8128 | { |
8129 | /* Add some entries to the .dynamic section. We fill in the | |
8130 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8131 | must add the entries now so that we get the correct size for | |
8132 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8133 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8134 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8135 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8136 | |
36af4a4e | 8137 | if (info->executable) |
5bd4f169 | 8138 | { |
dc810e39 | 8139 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8140 | return FALSE; |
5bd4f169 AM |
8141 | } |
8142 | ||
eea6121a | 8143 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8144 | { |
dc810e39 AM |
8145 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8146 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8147 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8148 | || !add_dynamic_entry (DT_JMPREL, 0) |
8149 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8150 | return FALSE; |
5bd4f169 AM |
8151 | } |
8152 | ||
19397422 AM |
8153 | if (NO_OPD_RELOCS) |
8154 | { | |
8155 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8156 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8157 | return FALSE; |
19397422 AM |
8158 | } |
8159 | ||
5bd4f169 AM |
8160 | if (relocs) |
8161 | { | |
dc810e39 AM |
8162 | if (!add_dynamic_entry (DT_RELA, 0) |
8163 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8164 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8165 | return FALSE; |
5bd4f169 | 8166 | |
65f38f15 AM |
8167 | /* If any dynamic relocs apply to a read-only section, |
8168 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8169 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8170 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8171 | |
65f38f15 | 8172 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8173 | { |
65f38f15 | 8174 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8175 | return FALSE; |
5bd4f169 | 8176 | } |
5bd4f169 | 8177 | } |
5bd4f169 | 8178 | } |
65f38f15 | 8179 | #undef add_dynamic_entry |
5bd4f169 | 8180 | |
b34976b6 | 8181 | return TRUE; |
5bd4f169 AM |
8182 | } |
8183 | ||
721956f4 | 8184 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8185 | |
4ce794b7 AM |
8186 | static inline enum ppc_stub_type |
8187 | ppc_type_of_stub (asection *input_sec, | |
8188 | const Elf_Internal_Rela *rel, | |
8189 | struct ppc_link_hash_entry **hash, | |
8190 | bfd_vma destination) | |
5bd4f169 | 8191 | { |
721956f4 AM |
8192 | struct ppc_link_hash_entry *h = *hash; |
8193 | bfd_vma location; | |
8194 | bfd_vma branch_offset; | |
8195 | bfd_vma max_branch_offset; | |
4ce794b7 | 8196 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8197 | |
721956f4 AM |
8198 | if (h != NULL) |
8199 | { | |
7fe2b9a6 AM |
8200 | struct ppc_link_hash_entry *fdh = h; |
8201 | if (fdh->oh != NULL | |
8202 | && fdh->oh->is_func_descriptor) | |
8203 | fdh = fdh->oh; | |
8387904d | 8204 | |
7fe2b9a6 | 8205 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8206 | { |
411e1bfb | 8207 | struct plt_entry *ent; |
8387904d | 8208 | |
7fe2b9a6 | 8209 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8210 | if (ent->addend == rel->r_addend |
8211 | && ent->plt.offset != (bfd_vma) -1) | |
8212 | { | |
7fe2b9a6 | 8213 | *hash = fdh; |
411e1bfb AM |
8214 | return ppc_stub_plt_call; |
8215 | } | |
5bd4f169 AM |
8216 | } |
8217 | ||
7fe2b9a6 AM |
8218 | /* Here, we know we don't have a plt entry. If we don't have a |
8219 | either a defined function descriptor or a defined entry symbol | |
8220 | in a regular object file, then it is pointless trying to make | |
8221 | any other type of stub. */ | |
8222 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8223 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8224 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8225 | && !((h->elf.root.type == bfd_link_hash_defined | |
8226 | || h->elf.root.type == bfd_link_hash_defweak) | |
8227 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8228 | return ppc_stub_none; |
5d1634d7 | 8229 | } |
5d1634d7 | 8230 | |
721956f4 AM |
8231 | /* Determine where the call point is. */ |
8232 | location = (input_sec->output_offset | |
8233 | + input_sec->output_section->vma | |
8234 | + rel->r_offset); | |
5d1634d7 | 8235 | |
721956f4 AM |
8236 | branch_offset = destination - location; |
8237 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8238 | |
721956f4 AM |
8239 | /* Determine if a long branch stub is needed. */ |
8240 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8241 | if (r_type != R_PPC64_REL24) |
721956f4 | 8242 | max_branch_offset = 1 << 15; |
5d1634d7 | 8243 | |
721956f4 AM |
8244 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8245 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8246 | is needed later. */ | |
8247 | return ppc_stub_long_branch; | |
5d1634d7 | 8248 | |
721956f4 | 8249 | return ppc_stub_none; |
5d1634d7 AM |
8250 | } |
8251 | ||
8252 | /* Build a .plt call stub. */ | |
8253 | ||
4ce794b7 AM |
8254 | static inline bfd_byte * |
8255 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8256 | { |
8257 | #define PPC_LO(v) ((v) & 0xffff) | |
8258 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8259 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8260 | ||
ac2df442 AM |
8261 | if (PPC_HA (offset) != 0) |
8262 | { | |
8263 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
8264 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8265 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8266 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8267 | { | |
8268 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
8269 | offset = 0; | |
8270 | } | |
8271 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8272 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
8273 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
8274 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8275 | } | |
8276 | else | |
8277 | { | |
8278 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8279 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
8280 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8281 | { | |
8282 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
8283 | offset = 0; | |
8284 | } | |
8285 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8286 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
8287 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
8288 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8289 | } | |
5d1634d7 AM |
8290 | return p; |
8291 | } | |
8292 | ||
b34976b6 | 8293 | static bfd_boolean |
4ce794b7 | 8294 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8295 | { |
721956f4 AM |
8296 | struct ppc_stub_hash_entry *stub_entry; |
8297 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8298 | struct bfd_link_info *info; |
8299 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8300 | bfd_byte *loc; |
8301 | bfd_byte *p; | |
8302 | unsigned int indx; | |
411e1bfb | 8303 | struct plt_entry *ent; |
ee75fd95 | 8304 | bfd_vma dest, off; |
721956f4 | 8305 | int size; |
5d1634d7 | 8306 | |
721956f4 AM |
8307 | /* Massage our args to the form they really have. */ |
8308 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8309 | info = in_arg; |
5d1634d7 | 8310 | |
5d1634d7 AM |
8311 | htab = ppc_hash_table (info); |
8312 | ||
721956f4 | 8313 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8314 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8315 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8316 | |
4ce794b7 | 8317 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8318 | switch (stub_entry->stub_type) |
5d1634d7 | 8319 | { |
721956f4 | 8320 | case ppc_stub_long_branch: |
ad8e1ba5 | 8321 | case ppc_stub_long_branch_r2off: |
721956f4 | 8322 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8323 | off = dest = (stub_entry->target_value |
8324 | + stub_entry->target_section->output_offset | |
8325 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8326 | |
721956f4 AM |
8327 | /* And this is where we are coming from. */ |
8328 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8329 | + stub_entry->stub_sec->output_offset |
8330 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8331 | |
ac2df442 AM |
8332 | size = 4; |
8333 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
8334 | { |
8335 | bfd_vma r2off; | |
8336 | ||
8337 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8338 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8339 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8340 | loc += 4; |
ac2df442 AM |
8341 | size = 12; |
8342 | if (PPC_HA (r2off) != 0) | |
8343 | { | |
8344 | size = 16; | |
8345 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8346 | loc += 4; | |
8347 | } | |
97b639ba | 8348 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 8349 | loc += 4; |
ac2df442 | 8350 | off -= size - 4; |
ad8e1ba5 | 8351 | } |
97b639ba | 8352 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8353 | |
5c3dead3 AM |
8354 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8355 | { | |
8356 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8357 | stub_entry->root.string); | |
8358 | htab->stub_error = TRUE; | |
8359 | return FALSE; | |
8360 | } | |
ee75fd95 AM |
8361 | |
8362 | if (info->emitrelocations) | |
8363 | { | |
8364 | Elf_Internal_Rela *relocs, *r; | |
8365 | struct bfd_elf_section_data *elfsec_data; | |
8366 | ||
8367 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8368 | relocs = elfsec_data->relocs; | |
8369 | if (relocs == NULL) | |
8370 | { | |
8371 | bfd_size_type relsize; | |
8372 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8373 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8374 | if (relocs == NULL) | |
8375 | return FALSE; | |
8376 | elfsec_data->relocs = relocs; | |
2e5b2d74 AM |
8377 | elfsec_data->rel_hdr.sh_size = (stub_entry->stub_sec->reloc_count |
8378 | * sizeof (Elf64_External_Rela)); | |
8379 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
ee75fd95 AM |
8380 | stub_entry->stub_sec->reloc_count = 0; |
8381 | } | |
8382 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8383 | stub_entry->stub_sec->reloc_count += 1; | |
8384 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8385 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8386 | r->r_addend = dest; | |
8387 | if (stub_entry->h != NULL) | |
8388 | { | |
8389 | struct elf_link_hash_entry **hashes; | |
8390 | unsigned long symndx; | |
8391 | struct ppc_link_hash_entry *h; | |
8392 | ||
8393 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8394 | if (hashes == NULL) | |
8395 | { | |
8396 | bfd_size_type hsize; | |
8397 | ||
8398 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8399 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8400 | if (hashes == NULL) | |
8401 | return FALSE; | |
8402 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8403 | htab->stub_globals = 1; | |
8404 | } | |
8405 | symndx = htab->stub_globals++; | |
8406 | h = stub_entry->h; | |
8407 | hashes[symndx] = &h->elf; | |
8408 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8409 | if (h->oh != NULL && h->oh->is_func) | |
8410 | h = h->oh; | |
8411 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8412 | /* H is an opd symbol. The addend must be zero. */ | |
8413 | r->r_addend = 0; | |
8414 | else | |
8415 | { | |
8416 | off = (h->elf.root.u.def.value | |
8417 | + h->elf.root.u.def.section->output_offset | |
8418 | + h->elf.root.u.def.section->output_section->vma); | |
8419 | r->r_addend -= off; | |
8420 | } | |
8421 | } | |
8422 | } | |
721956f4 | 8423 | break; |
e86ce104 | 8424 | |
721956f4 | 8425 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8426 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8427 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8428 | stub_entry->root.string + 9, | |
b34976b6 | 8429 | FALSE, FALSE); |
721956f4 AM |
8430 | if (br_entry == NULL) |
8431 | { | |
8432 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8433 | stub_entry->root.string); |
b34976b6 AM |
8434 | htab->stub_error = TRUE; |
8435 | return FALSE; | |
721956f4 AM |
8436 | } |
8437 | ||
8438 | off = (stub_entry->target_value | |
8439 | + stub_entry->target_section->output_offset | |
8440 | + stub_entry->target_section->output_section->vma); | |
8441 | ||
4ce794b7 AM |
8442 | bfd_put_64 (htab->brlt->owner, off, |
8443 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8444 | |
f94498ff | 8445 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 8446 | { |
f94498ff | 8447 | br_entry->iter = 0; |
84f5d08e | 8448 | |
f94498ff | 8449 | if (htab->relbrlt != NULL) |
84f5d08e | 8450 | { |
f94498ff AM |
8451 | /* Create a reloc for the branch lookup table entry. */ |
8452 | Elf_Internal_Rela rela; | |
8453 | bfd_byte *rl; | |
8454 | ||
8455 | rela.r_offset = (br_entry->offset | |
8456 | + htab->brlt->output_offset | |
8457 | + htab->brlt->output_section->vma); | |
8458 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
8459 | rela.r_addend = off; | |
8460 | ||
8461 | rl = htab->relbrlt->contents; | |
8462 | rl += (htab->relbrlt->reloc_count++ | |
8463 | * sizeof (Elf64_External_Rela)); | |
8464 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
8465 | } | |
8466 | else if (info->emitrelocations) | |
8467 | { | |
8468 | Elf_Internal_Rela *relocs, *r; | |
8469 | struct bfd_elf_section_data *elfsec_data; | |
8470 | ||
8471 | elfsec_data = elf_section_data (htab->brlt); | |
8472 | relocs = elfsec_data->relocs; | |
84f5d08e | 8473 | if (relocs == NULL) |
f94498ff AM |
8474 | { |
8475 | bfd_size_type relsize; | |
8476 | relsize = htab->brlt->reloc_count * sizeof (*relocs); | |
8477 | relocs = bfd_alloc (htab->brlt->owner, relsize); | |
8478 | if (relocs == NULL) | |
8479 | return FALSE; | |
8480 | elfsec_data->relocs = relocs; | |
8481 | elfsec_data->rel_hdr.sh_size | |
8482 | = (stub_entry->stub_sec->reloc_count | |
8483 | * sizeof (Elf64_External_Rela)); | |
8484 | elfsec_data->rel_hdr.sh_entsize | |
8485 | = sizeof (Elf64_External_Rela); | |
8486 | htab->brlt->reloc_count = 0; | |
8487 | } | |
8488 | r = relocs + htab->brlt->reloc_count; | |
8489 | htab->brlt->reloc_count += 1; | |
8490 | r->r_offset = (br_entry->offset | |
8491 | + htab->brlt->output_offset | |
8492 | + htab->brlt->output_section->vma); | |
8493 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
8494 | r->r_addend = off; | |
84f5d08e | 8495 | } |
84f5d08e | 8496 | } |
721956f4 AM |
8497 | |
8498 | off = (br_entry->offset | |
4ce794b7 AM |
8499 | + htab->brlt->output_offset |
8500 | + htab->brlt->output_section->vma | |
8501 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8502 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8503 | |
ad8e1ba5 | 8504 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8505 | { |
8506 | (*_bfd_error_handler) | |
e86ce104 | 8507 | (_("linkage table error against `%s'"), |
721956f4 | 8508 | stub_entry->root.string); |
5d1634d7 | 8509 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8510 | htab->stub_error = TRUE; |
8511 | return FALSE; | |
5d1634d7 | 8512 | } |
41bd81ab | 8513 | |
721956f4 | 8514 | indx = off; |
ad8e1ba5 AM |
8515 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8516 | { | |
ac2df442 AM |
8517 | if (PPC_HA (indx) != 0) |
8518 | { | |
8519 | size = 16; | |
8520 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); | |
8521 | loc += 4; | |
8522 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); | |
8523 | } | |
8524 | else | |
8525 | { | |
8526 | size = 12; | |
8527 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc); | |
8528 | } | |
ad8e1ba5 AM |
8529 | } |
8530 | else | |
8531 | { | |
8532 | bfd_vma r2off; | |
8533 | ||
8534 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8535 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8536 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8537 | loc += 4; |
ac2df442 AM |
8538 | size = 20; |
8539 | if (PPC_HA (indx) != 0) | |
8540 | { | |
8541 | size += 4; | |
8542 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); | |
8543 | loc += 4; | |
8544 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); | |
8545 | loc += 4; | |
8546 | } | |
8547 | else | |
8548 | { | |
8549 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc); | |
8550 | loc += 4; | |
8551 | } | |
8552 | ||
8553 | if (PPC_HA (r2off) != 0) | |
8554 | { | |
8555 | size += 4; | |
8556 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8557 | loc += 4; | |
8558 | } | |
97b639ba | 8559 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8560 | } |
8561 | loc += 4; | |
97b639ba | 8562 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8563 | loc += 4; |
97b639ba | 8564 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8565 | break; |
5d1634d7 | 8566 | |
721956f4 | 8567 | case ppc_stub_plt_call: |
c862ae31 AM |
8568 | /* Do the best we can for shared libraries built without |
8569 | exporting ".foo" for each "foo". This can happen when symbol | |
8570 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8571 | if (stub_entry->h->oh != NULL |
8572 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8573 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8574 | { |
8575 | /* Point the symbol at the stub. There may be multiple stubs, | |
8576 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8577 | defined somewhere. Maybe defining the symbol in the stub |
8578 | section is a silly idea. If we didn't do this, htab->top_id | |
8579 | could disappear. */ | |
34814b9f AM |
8580 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8581 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8582 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8583 | } |
8584 | ||
721956f4 | 8585 | /* Now build the stub. */ |
411e1bfb AM |
8586 | off = (bfd_vma) -1; |
8587 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8588 | if (ent->addend == stub_entry->addend) | |
8589 | { | |
8590 | off = ent->plt.offset; | |
8591 | break; | |
8592 | } | |
721956f4 AM |
8593 | if (off >= (bfd_vma) -2) |
8594 | abort (); | |
8595 | ||
8596 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8597 | off += (htab->plt->output_offset |
8598 | + htab->plt->output_section->vma | |
8599 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8600 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8601 | |
ad8e1ba5 | 8602 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8603 | { |
8604 | (*_bfd_error_handler) | |
8605 | (_("linkage table error against `%s'"), | |
8606 | stub_entry->h->elf.root.root.string); | |
8607 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8608 | htab->stub_error = TRUE; |
8609 | return FALSE; | |
721956f4 AM |
8610 | } |
8611 | ||
97b639ba | 8612 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8613 | size = p - loc; |
8614 | break; | |
8615 | ||
8616 | default: | |
8617 | BFD_FAIL (); | |
b34976b6 | 8618 | return FALSE; |
721956f4 AM |
8619 | } |
8620 | ||
eea6121a | 8621 | stub_entry->stub_sec->size += size; |
97b639ba | 8622 | |
ee75fd95 | 8623 | if (htab->emit_stub_syms) |
97b639ba AM |
8624 | { |
8625 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8626 | size_t len1, len2; |
8627 | char *name; | |
8628 | const char *const stub_str[] = { "long_branch", | |
8629 | "long_branch_r2off", | |
8630 | "plt_branch", | |
8631 | "plt_branch_r2off", | |
8632 | "plt_call" }; | |
8633 | ||
8634 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8635 | len2 = strlen (stub_entry->root.string); | |
8636 | name = bfd_malloc (len1 + len2 + 2); | |
8637 | if (name == NULL) | |
8638 | return FALSE; | |
8639 | memcpy (name, stub_entry->root.string, 9); | |
8640 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8641 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8642 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8643 | if (h == NULL) |
8644 | return FALSE; | |
8645 | if (h->root.type == bfd_link_hash_new) | |
8646 | { | |
8647 | h->root.type = bfd_link_hash_defined; | |
8648 | h->root.u.def.section = stub_entry->stub_sec; | |
8649 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8650 | h->ref_regular = 1; |
8651 | h->def_regular = 1; | |
8652 | h->ref_regular_nonweak = 1; | |
8653 | h->forced_local = 1; | |
8654 | h->non_elf = 0; | |
97b639ba AM |
8655 | } |
8656 | } | |
8657 | ||
b34976b6 | 8658 | return TRUE; |
721956f4 AM |
8659 | } |
8660 | ||
8661 | /* As above, but don't actually build the stub. Just bump offset so | |
8662 | we know stub section sizes, and select plt_branch stubs where | |
8663 | long_branch stubs won't do. */ | |
8664 | ||
b34976b6 | 8665 | static bfd_boolean |
4ce794b7 | 8666 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8667 | { |
8668 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8669 | struct bfd_link_info *info; |
721956f4 AM |
8670 | struct ppc_link_hash_table *htab; |
8671 | bfd_vma off; | |
8672 | int size; | |
8673 | ||
8674 | /* Massage our args to the form they really have. */ | |
8675 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8676 | info = in_arg; |
8677 | ||
8678 | htab = ppc_hash_table (info); | |
721956f4 AM |
8679 | |
8680 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8681 | { | |
411e1bfb | 8682 | struct plt_entry *ent; |
58ac9f71 | 8683 | off = (bfd_vma) -1; |
411e1bfb AM |
8684 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8685 | if (ent->addend == stub_entry->addend) | |
8686 | { | |
8687 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8688 | break; | |
8689 | } | |
58ac9f71 | 8690 | if (off >= (bfd_vma) -2) |
411e1bfb | 8691 | abort (); |
4ce794b7 AM |
8692 | off += (htab->plt->output_offset |
8693 | + htab->plt->output_section->vma | |
8694 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8695 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8696 | |
ad8e1ba5 | 8697 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
8698 | if (PPC_HA (off) == 0) |
8699 | size -= 4; | |
4ce794b7 | 8700 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8701 | size += 4; |
8702 | } | |
8703 | else | |
8704 | { | |
ad8e1ba5 AM |
8705 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8706 | variants. */ | |
ac2df442 AM |
8707 | bfd_vma r2off = 0; |
8708 | ||
721956f4 AM |
8709 | off = (stub_entry->target_value |
8710 | + stub_entry->target_section->output_offset | |
8711 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8712 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8713 | + stub_entry->stub_sec->output_offset |
8714 | + stub_entry->stub_sec->output_section->vma); | |
8715 | ||
ad8e1ba5 AM |
8716 | /* Reset the stub type from the plt variant in case we now |
8717 | can reach with a shorter stub. */ | |
8718 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8719 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8720 | ||
8721 | size = 4; | |
8722 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8723 | { | |
ac2df442 AM |
8724 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
8725 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
8726 | size = 12; | |
8727 | if (PPC_HA (r2off) != 0) | |
8728 | size = 16; | |
8729 | off -= size - 4; | |
ad8e1ba5 AM |
8730 | } |
8731 | ||
8732 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8733 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8734 | { | |
8735 | struct ppc_branch_hash_entry *br_entry; | |
ac2df442 | 8736 | unsigned int indx; |
721956f4 AM |
8737 | |
8738 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8739 | stub_entry->root.string + 9, | |
b34976b6 | 8740 | TRUE, FALSE); |
721956f4 AM |
8741 | if (br_entry == NULL) |
8742 | { | |
8743 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8744 | stub_entry->root.string); |
b34976b6 AM |
8745 | htab->stub_error = TRUE; |
8746 | return FALSE; | |
721956f4 AM |
8747 | } |
8748 | ||
8749 | if (br_entry->iter != htab->stub_iteration) | |
8750 | { | |
8751 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8752 | br_entry->offset = htab->brlt->size; |
8753 | htab->brlt->size += 8; | |
63bc6f6c | 8754 | |
ee75fd95 | 8755 | if (htab->relbrlt != NULL) |
eea6121a | 8756 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
8757 | else if (info->emitrelocations) |
8758 | { | |
8759 | htab->brlt->reloc_count += 1; | |
8760 | htab->brlt->flags |= SEC_RELOC; | |
8761 | } | |
721956f4 | 8762 | } |
ad8e1ba5 AM |
8763 | |
8764 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
8765 | off = (br_entry->offset |
8766 | + htab->brlt->output_offset | |
8767 | + htab->brlt->output_section->vma | |
8768 | - elf_gp (htab->brlt->output_section->owner) | |
8769 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
8770 | ||
8771 | indx = off; | |
8772 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
8773 | { | |
8774 | size = 12; | |
8775 | if (PPC_HA (indx) != 0) | |
8776 | size = 16; | |
8777 | } | |
8778 | else | |
8779 | { | |
8780 | size = 20; | |
8781 | if (PPC_HA (indx) != 0) | |
8782 | size += 4; | |
8783 | ||
8784 | if (PPC_HA (r2off) != 0) | |
8785 | size += 4; | |
8786 | } | |
721956f4 | 8787 | } |
84f5d08e AM |
8788 | else if (info->emitrelocations) |
8789 | { | |
8790 | stub_entry->stub_sec->reloc_count += 1; | |
8791 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
8792 | } | |
721956f4 AM |
8793 | } |
8794 | ||
eea6121a | 8795 | stub_entry->stub_sec->size += size; |
b34976b6 | 8796 | return TRUE; |
721956f4 AM |
8797 | } |
8798 | ||
8799 | /* Set up various things so that we can make a list of input sections | |
8800 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8801 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8802 | |
8803 | int | |
4c52953f AM |
8804 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8805 | struct bfd_link_info *info, | |
8806 | int no_multi_toc) | |
721956f4 AM |
8807 | { |
8808 | bfd *input_bfd; | |
734b6cf9 | 8809 | int top_id, top_index, id; |
721956f4 | 8810 | asection *section; |
734b6cf9 | 8811 | asection **input_list; |
721956f4 AM |
8812 | bfd_size_type amt; |
8813 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8814 | ||
4c52953f AM |
8815 | htab->no_multi_toc = no_multi_toc; |
8816 | ||
4ce794b7 | 8817 | if (htab->brlt == NULL) |
721956f4 AM |
8818 | return 0; |
8819 | ||
1e2f5b6e | 8820 | /* Find the top input section id. */ |
3d6f9012 | 8821 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8822 | input_bfd != NULL; |
8823 | input_bfd = input_bfd->link_next) | |
8824 | { | |
721956f4 AM |
8825 | for (section = input_bfd->sections; |
8826 | section != NULL; | |
8827 | section = section->next) | |
8828 | { | |
8829 | if (top_id < section->id) | |
8830 | top_id = section->id; | |
8831 | } | |
8832 | } | |
721956f4 | 8833 | |
8f3bab57 | 8834 | htab->top_id = top_id; |
721956f4 | 8835 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8836 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8837 | if (htab->stub_group == NULL) |
8838 | return -1; | |
8839 | ||
3d6f9012 AM |
8840 | /* Set toc_off for com, und, abs and ind sections. */ |
8841 | for (id = 0; id < 3; id++) | |
8842 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8843 | |
3d6f9012 | 8844 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8845 | |
8846 | /* We can't use output_bfd->section_count here to find the top output | |
8847 | section index as some sections may have been removed, and | |
8423293d | 8848 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8849 | for (section = output_bfd->sections, top_index = 0; |
8850 | section != NULL; | |
8851 | section = section->next) | |
8852 | { | |
8853 | if (top_index < section->index) | |
8854 | top_index = section->index; | |
8855 | } | |
8856 | ||
8857 | htab->top_index = top_index; | |
8858 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8859 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8860 | htab->input_list = input_list; |
8861 | if (input_list == NULL) | |
8862 | return -1; | |
8863 | ||
721956f4 AM |
8864 | return 1; |
8865 | } | |
8866 | ||
e717da7e AM |
8867 | /* The linker repeatedly calls this function for each TOC input section |
8868 | and linker generated GOT section. Group input bfds such that the toc | |
8869 | within a group is less than 64k in size. Will break with cute linker | |
8870 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8871 | |
8872 | void | |
4ce794b7 | 8873 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8874 | { |
8875 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8876 | ||
4c52953f AM |
8877 | if (!htab->no_multi_toc) |
8878 | { | |
8879 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8880 | bfd_vma off = addr - htab->toc_curr; | |
8881 | ||
8882 | if (off + isec->size > 0x10000) | |
8883 | htab->toc_curr = addr; | |
99877b66 | 8884 | |
4c52953f AM |
8885 | elf_gp (isec->owner) = (htab->toc_curr |
8886 | - elf_gp (isec->output_section->owner) | |
8887 | + TOC_BASE_OFF); | |
8888 | } | |
ad8e1ba5 AM |
8889 | } |
8890 | ||
8891 | /* Called after the last call to the above function. */ | |
8892 | ||
8893 | void | |
4c52953f | 8894 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8895 | { |
8896 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8897 | |
4c52953f AM |
8898 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8899 | ||
ad8e1ba5 AM |
8900 | /* toc_curr tracks the TOC offset used for code sections below in |
8901 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8902 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8903 | } |
8904 | ||
9b5ecbd0 AM |
8905 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8906 | calls, then there's no need to use toc adjusting stubs when branching | |
8907 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8908 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8909 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8910 | for a stub was detected. If called from the top level, a return of | |
8911 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8912 | |
8913 | static int | |
4ce794b7 | 8914 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8915 | { |
4c52953f AM |
8916 | Elf_Internal_Rela *relstart, *rel; |
8917 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8918 | int ret; |
4c52953f | 8919 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8920 | |
772119ce AM |
8921 | /* We know none of our code bearing sections will need toc stubs. */ |
8922 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8923 | return 0; | |
8924 | ||
eea6121a | 8925 | if (isec->size == 0) |
082c50f8 AM |
8926 | return 0; |
8927 | ||
4c52953f AM |
8928 | if (isec->output_section == NULL) |
8929 | return 0; | |
8930 | ||
4c52953f AM |
8931 | if (isec->reloc_count == 0) |
8932 | return 0; | |
8933 | ||
8934 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8935 | info->keep_memory); | |
8936 | if (relstart == NULL) | |
8937 | return -1; | |
8938 | ||
8939 | /* Look for branches to outside of this section. */ | |
8940 | local_syms = NULL; | |
8941 | ret = 0; | |
8942 | htab = ppc_hash_table (info); | |
8943 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8944 | { |
4c52953f AM |
8945 | enum elf_ppc64_reloc_type r_type; |
8946 | unsigned long r_symndx; | |
8947 | struct elf_link_hash_entry *h; | |
8948 | Elf_Internal_Sym *sym; | |
8949 | asection *sym_sec; | |
74f0fb50 | 8950 | struct _opd_sec_data *opd; |
4c52953f AM |
8951 | bfd_vma sym_value; |
8952 | bfd_vma dest; | |
8953 | ||
8954 | r_type = ELF64_R_TYPE (rel->r_info); | |
8955 | if (r_type != R_PPC64_REL24 | |
8956 | && r_type != R_PPC64_REL14 | |
8957 | && r_type != R_PPC64_REL14_BRTAKEN | |
8958 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8959 | continue; | |
8960 | ||
8961 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8962 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8963 | isec->owner)) | |
9b5ecbd0 | 8964 | { |
4c52953f AM |
8965 | ret = -1; |
8966 | break; | |
9b5ecbd0 | 8967 | } |
9b5ecbd0 | 8968 | |
2917689a AM |
8969 | /* Calls to dynamic lib functions go through a plt call stub |
8970 | that uses r2. Branches to undefined symbols might be a call | |
8971 | using old-style dot symbols that can be satisfied by a plt | |
8972 | call into a new-style dynamic library. */ | |
4c52953f | 8973 | if (sym_sec == NULL) |
2917689a AM |
8974 | { |
8975 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8976 | if (eh != NULL | |
8977 | && eh->oh != NULL | |
8978 | && eh->oh->elf.plt.plist != NULL) | |
8979 | { | |
8980 | ret = 1; | |
8981 | break; | |
8982 | } | |
4c52953f | 8983 | |
2917689a AM |
8984 | /* Ignore other undefined symbols. */ |
8985 | continue; | |
8986 | } | |
8987 | ||
8988 | /* Assume branches to other sections not included in the link need | |
8989 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8990 | if (sym_sec->output_section == NULL) |
8991 | { | |
8992 | ret = 1; | |
8993 | break; | |
8994 | } | |
8995 | ||
8996 | if (h == NULL) | |
8997 | sym_value = sym->st_value; | |
8998 | else | |
8999 | { | |
9000 | if (h->root.type != bfd_link_hash_defined | |
9001 | && h->root.type != bfd_link_hash_defweak) | |
9002 | abort (); | |
9003 | sym_value = h->root.u.def.value; | |
9004 | } | |
9005 | sym_value += rel->r_addend; | |
9006 | ||
9007 | /* If this branch reloc uses an opd sym, find the code section. */ | |
74f0fb50 AM |
9008 | opd = get_opd_info (sym_sec); |
9009 | if (opd != NULL) | |
4c52953f | 9010 | { |
74f0fb50 | 9011 | if (h == NULL && opd->adjust != NULL) |
4c52953f AM |
9012 | { |
9013 | long adjust; | |
9014 | ||
74f0fb50 | 9015 | adjust = opd->adjust[sym->st_value / 8]; |
4c52953f AM |
9016 | if (adjust == -1) |
9017 | /* Assume deleted functions won't ever be called. */ | |
9018 | continue; | |
9019 | sym_value += adjust; | |
9020 | } | |
9021 | ||
9022 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
9023 | if (dest == (bfd_vma) -1) | |
9024 | continue; | |
9025 | } | |
9026 | else | |
9027 | dest = (sym_value | |
9028 | + sym_sec->output_offset | |
9029 | + sym_sec->output_section->vma); | |
9030 | ||
9031 | /* Ignore branch to self. */ | |
9032 | if (sym_sec == isec) | |
9033 | continue; | |
9034 | ||
9035 | /* If the called function uses the toc, we need a stub. */ | |
9036 | if (sym_sec->has_toc_reloc | |
9037 | || sym_sec->makes_toc_func_call) | |
9038 | { | |
9039 | ret = 1; | |
9040 | break; | |
9041 | } | |
9042 | ||
9043 | /* Assume any branch that needs a long branch stub might in fact | |
9044 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
9045 | else if (dest - (isec->output_offset | |
9046 | + isec->output_section->vma | |
9047 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
9048 | { |
9049 | ret = 1; | |
9050 | break; | |
9051 | } | |
4c52953f AM |
9052 | |
9053 | /* If calling back to a section in the process of being tested, we | |
9054 | can't say for sure that no toc adjusting stubs are needed, so | |
9055 | don't return zero. */ | |
9056 | else if (sym_sec->call_check_in_progress) | |
9057 | ret = 2; | |
9058 | ||
9059 | /* Branches to another section that itself doesn't have any TOC | |
9060 | references are OK. Recursively call ourselves to check. */ | |
9061 | else if (sym_sec->id <= htab->top_id | |
9062 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
9063 | { | |
9064 | int recur; | |
9065 | ||
9066 | /* Mark current section as indeterminate, so that other | |
9067 | sections that call back to current won't be marked as | |
9068 | known. */ | |
9069 | isec->call_check_in_progress = 1; | |
9070 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
9071 | isec->call_check_in_progress = 0; | |
9072 | ||
9073 | if (recur < 0) | |
9074 | { | |
9075 | /* An error. Exit. */ | |
9076 | ret = -1; | |
9077 | break; | |
9078 | } | |
9079 | else if (recur <= 1) | |
9080 | { | |
9081 | /* Known result. Mark as checked and set section flag. */ | |
9082 | htab->stub_group[sym_sec->id].toc_off = 1; | |
9083 | if (recur != 0) | |
9084 | { | |
9085 | sym_sec->makes_toc_func_call = 1; | |
9086 | ret = 1; | |
9087 | break; | |
9088 | } | |
9089 | } | |
9090 | else | |
9091 | { | |
9092 | /* Unknown result. Continue checking. */ | |
9093 | ret = 2; | |
9094 | } | |
9095 | } | |
9b5ecbd0 AM |
9096 | } |
9097 | ||
4c52953f | 9098 | if (local_syms != NULL |
0ffa91dd | 9099 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
4c52953f AM |
9100 | free (local_syms); |
9101 | if (elf_section_data (isec)->relocs != relstart) | |
9102 | free (relstart); | |
9103 | ||
9b5ecbd0 AM |
9104 | return ret; |
9105 | } | |
9106 | ||
721956f4 AM |
9107 | /* The linker repeatedly calls this function for each input section, |
9108 | in the order that input sections are linked into output sections. | |
9109 | Build lists of input sections to determine groupings between which | |
9110 | we may insert linker stubs. */ | |
9111 | ||
9b5ecbd0 | 9112 | bfd_boolean |
4ce794b7 | 9113 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
9114 | { |
9115 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9116 | ||
734b6cf9 AM |
9117 | if ((isec->output_section->flags & SEC_CODE) != 0 |
9118 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 9119 | { |
734b6cf9 | 9120 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 9121 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 9122 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
9123 | /* This happens to make the list in reverse order, |
9124 | which is what we want. */ | |
734b6cf9 AM |
9125 | PREV_SEC (isec) = *list; |
9126 | *list = isec; | |
721956f4 | 9127 | } |
ad8e1ba5 | 9128 | |
4c52953f | 9129 | if (htab->multi_toc_needed) |
9b5ecbd0 | 9130 | { |
4c52953f AM |
9131 | /* If a code section has a function that uses the TOC then we need |
9132 | to use the right TOC (obviously). Also, make sure that .opd gets | |
9133 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
9134 | can't find their function symbol (shouldn't ever happen now). |
9135 | Also specially treat .fixup for the linux kernel. .fixup | |
9136 | contains branches, but only back to the function that hit an | |
9137 | exception. */ | |
9138 | if (isec->has_toc_reloc | |
9139 | || (isec->flags & SEC_CODE) == 0 | |
9140 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
9141 | { |
9142 | if (elf_gp (isec->owner) != 0) | |
9143 | htab->toc_curr = elf_gp (isec->owner); | |
9144 | } | |
9145 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9146 | { | |
9147 | int ret = toc_adjusting_stub_needed (info, isec); | |
9148 | if (ret < 0) | |
9149 | return FALSE; | |
9150 | else | |
9151 | isec->makes_toc_func_call = ret & 1; | |
9152 | } | |
9b5ecbd0 | 9153 | } |
ad8e1ba5 AM |
9154 | |
9155 | /* Functions that don't use the TOC can belong in any TOC group. | |
9156 | Use the last TOC base. This happens to make _init and _fini | |
9157 | pasting work. */ | |
9158 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9159 | return TRUE; |
721956f4 AM |
9160 | } |
9161 | ||
9162 | /* See whether we can group stub sections together. Grouping stub | |
9163 | sections may result in fewer stubs. More importantly, we need to | |
9164 | put all .init* and .fini* stubs at the beginning of the .init or | |
9165 | .fini output sections respectively, because glibc splits the | |
9166 | _init and _fini functions into multiple parts. Putting a stub in | |
9167 | the middle of a function is not a good idea. */ | |
9168 | ||
9169 | static void | |
4ce794b7 AM |
9170 | group_sections (struct ppc_link_hash_table *htab, |
9171 | bfd_size_type stub_group_size, | |
9172 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9173 | { |
7c8fe5c4 AM |
9174 | asection **list; |
9175 | bfd_size_type stub14_group_size; | |
9176 | bfd_boolean suppress_size_errors; | |
9177 | ||
9178 | suppress_size_errors = FALSE; | |
9179 | stub14_group_size = stub_group_size; | |
9180 | if (stub_group_size == 1) | |
9181 | { | |
9182 | /* Default values. */ | |
9183 | if (stubs_always_before_branch) | |
9184 | { | |
9185 | stub_group_size = 0x1e00000; | |
9186 | stub14_group_size = 0x7800; | |
9187 | } | |
9188 | else | |
9189 | { | |
9190 | stub_group_size = 0x1c00000; | |
9191 | stub14_group_size = 0x7000; | |
9192 | } | |
9193 | suppress_size_errors = TRUE; | |
9194 | } | |
9195 | ||
9196 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9197 | do |
721956f4 | 9198 | { |
734b6cf9 AM |
9199 | asection *tail = *list; |
9200 | while (tail != NULL) | |
721956f4 | 9201 | { |
734b6cf9 AM |
9202 | asection *curr; |
9203 | asection *prev; | |
9204 | bfd_size_type total; | |
9205 | bfd_boolean big_sec; | |
9206 | bfd_vma curr_toc; | |
9207 | ||
9208 | curr = tail; | |
eea6121a | 9209 | total = tail->size; |
7c8fe5c4 AM |
9210 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9211 | ? stub14_group_size : stub_group_size); | |
9212 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9213 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9214 | tail->owner, tail); | |
734b6cf9 AM |
9215 | curr_toc = htab->stub_group[tail->id].toc_off; |
9216 | ||
9217 | while ((prev = PREV_SEC (curr)) != NULL | |
9218 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9219 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9220 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9221 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9222 | curr = prev; |
9223 | ||
9224 | /* OK, the size from the start of CURR to the end is less | |
9225 | than stub_group_size and thus can be handled by one stub | |
9226 | section. (or the tail section is itself larger than | |
9227 | stub_group_size, in which case we may be toast.) We | |
9228 | should really be keeping track of the total size of stubs | |
9229 | added here, as stubs contribute to the final output | |
9230 | section size. That's a little tricky, and this way will | |
9231 | only break if stubs added make the total size more than | |
9232 | 2^25, ie. for the default stub_group_size, if stubs total | |
9233 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9234 | do | |
721956f4 AM |
9235 | { |
9236 | prev = PREV_SEC (tail); | |
734b6cf9 | 9237 | /* Set up this stub group. */ |
721956f4 AM |
9238 | htab->stub_group[tail->id].link_sec = curr; |
9239 | } | |
734b6cf9 AM |
9240 | while (tail != curr && (tail = prev) != NULL); |
9241 | ||
9242 | /* But wait, there's more! Input sections up to stub_group_size | |
9243 | bytes before the stub section can be handled by it too. | |
9244 | Don't do this if we have a really large section after the | |
9245 | stubs, as adding more stubs increases the chance that | |
9246 | branches may not reach into the stub section. */ | |
9247 | if (!stubs_always_before_branch && !big_sec) | |
9248 | { | |
9249 | total = 0; | |
9250 | while (prev != NULL | |
9251 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9252 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9253 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9254 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9255 | { | |
9256 | tail = prev; | |
9257 | prev = PREV_SEC (tail); | |
9258 | htab->stub_group[tail->id].link_sec = curr; | |
9259 | } | |
9260 | } | |
9261 | tail = prev; | |
721956f4 AM |
9262 | } |
9263 | } | |
734b6cf9 AM |
9264 | while (list-- != htab->input_list); |
9265 | free (htab->input_list); | |
721956f4 AM |
9266 | #undef PREV_SEC |
9267 | } | |
9268 | ||
721956f4 AM |
9269 | /* Determine and set the size of the stub section for a final link. |
9270 | ||
9271 | The basic idea here is to examine all the relocations looking for | |
9272 | PC-relative calls to a target that is unreachable with a "bl" | |
9273 | instruction. */ | |
9274 | ||
b34976b6 | 9275 | bfd_boolean |
4ce794b7 | 9276 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9277 | struct bfd_link_info *info, |
9278 | bfd_signed_vma group_size, | |
9279 | asection *(*add_stub_section) (const char *, asection *), | |
9280 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9281 | { |
9282 | bfd_size_type stub_group_size; | |
b34976b6 | 9283 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9284 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9285 | ||
9286 | /* Stash our params away. */ | |
721956f4 AM |
9287 | htab->add_stub_section = add_stub_section; |
9288 | htab->layout_sections_again = layout_sections_again; | |
9289 | stubs_always_before_branch = group_size < 0; | |
9290 | if (group_size < 0) | |
9291 | stub_group_size = -group_size; | |
9292 | else | |
9293 | stub_group_size = group_size; | |
721956f4 AM |
9294 | |
9295 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9296 | ||
721956f4 AM |
9297 | while (1) |
9298 | { | |
9299 | bfd *input_bfd; | |
9300 | unsigned int bfd_indx; | |
9301 | asection *stub_sec; | |
721956f4 AM |
9302 | |
9303 | htab->stub_iteration += 1; | |
721956f4 AM |
9304 | |
9305 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9306 | input_bfd != NULL; | |
9307 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9308 | { | |
9309 | Elf_Internal_Shdr *symtab_hdr; | |
9310 | asection *section; | |
6cdc0ccc | 9311 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9312 | |
67f93c31 AM |
9313 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9314 | continue; | |
9315 | ||
721956f4 | 9316 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 9317 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
9318 | if (symtab_hdr->sh_info == 0) |
9319 | continue; | |
9320 | ||
721956f4 AM |
9321 | /* Walk over each section attached to the input bfd. */ |
9322 | for (section = input_bfd->sections; | |
9323 | section != NULL; | |
9324 | section = section->next) | |
9325 | { | |
721956f4 | 9326 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9327 | |
9328 | /* If there aren't any relocs, then there's nothing more | |
9329 | to do. */ | |
9330 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9331 | || (section->flags & SEC_ALLOC) == 0 |
9332 | || (section->flags & SEC_LOAD) == 0 | |
9333 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9334 | || section->reloc_count == 0) |
9335 | continue; | |
9336 | ||
9337 | /* If this section is a link-once section that will be | |
9338 | discarded, then don't create any stubs. */ | |
9339 | if (section->output_section == NULL | |
9340 | || section->output_section->owner != output_bfd) | |
9341 | continue; | |
9342 | ||
1e2f5b6e AM |
9343 | /* Get the relocs. */ |
9344 | internal_relocs | |
4ce794b7 | 9345 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9346 | info->keep_memory); |
721956f4 | 9347 | if (internal_relocs == NULL) |
1e2f5b6e | 9348 | goto error_ret_free_local; |
721956f4 AM |
9349 | |
9350 | /* Now examine each relocation. */ | |
9351 | irela = internal_relocs; | |
9352 | irelaend = irela + section->reloc_count; | |
9353 | for (; irela < irelaend; irela++) | |
9354 | { | |
4ce794b7 AM |
9355 | enum elf_ppc64_reloc_type r_type; |
9356 | unsigned int r_indx; | |
721956f4 AM |
9357 | enum ppc_stub_type stub_type; |
9358 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9359 | asection *sym_sec, *code_sec; |
721956f4 AM |
9360 | bfd_vma sym_value; |
9361 | bfd_vma destination; | |
8843416a | 9362 | bfd_boolean ok_dest; |
721956f4 | 9363 | struct ppc_link_hash_entry *hash; |
8387904d | 9364 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9365 | struct elf_link_hash_entry *h; |
9366 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9367 | char *stub_name; |
9368 | const asection *id_sec; | |
74f0fb50 | 9369 | struct _opd_sec_data *opd; |
721956f4 AM |
9370 | |
9371 | r_type = ELF64_R_TYPE (irela->r_info); | |
9372 | r_indx = ELF64_R_SYM (irela->r_info); | |
9373 | ||
4ce794b7 | 9374 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9375 | { |
9376 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9377 | goto error_ret_free_internal; |
721956f4 AM |
9378 | } |
9379 | ||
9380 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9381 | if (r_type != R_PPC64_REL24 |
9382 | && r_type != R_PPC64_REL14 | |
9383 | && r_type != R_PPC64_REL14_BRTAKEN | |
9384 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9385 | continue; |
9386 | ||
9387 | /* Now determine the call target, its name, value, | |
9388 | section. */ | |
411e1bfb AM |
9389 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9390 | r_indx, input_bfd)) | |
9391 | goto error_ret_free_internal; | |
9392 | hash = (struct ppc_link_hash_entry *) h; | |
9393 | ||
8843416a | 9394 | ok_dest = FALSE; |
8387904d | 9395 | fdh = NULL; |
7fe2b9a6 | 9396 | sym_value = 0; |
411e1bfb | 9397 | if (hash == NULL) |
721956f4 | 9398 | { |
411e1bfb | 9399 | sym_value = sym->st_value; |
8843416a | 9400 | ok_dest = TRUE; |
721956f4 | 9401 | } |
7fe2b9a6 AM |
9402 | else if (hash->elf.root.type == bfd_link_hash_defined |
9403 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9404 | { | |
9405 | sym_value = hash->elf.root.u.def.value; | |
9406 | if (sym_sec->output_section != NULL) | |
9407 | ok_dest = TRUE; | |
9408 | } | |
9409 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9410 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9411 | { |
99877b66 | 9412 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9413 | use the func descriptor sym instead if it is |
9414 | defined. */ | |
ceb1f1ef | 9415 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9416 | && (fdh = get_fdh (hash, htab)) != NULL) |
9417 | { | |
8387904d AM |
9418 | if (fdh->elf.root.type == bfd_link_hash_defined |
9419 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9420 | { | |
9421 | sym_sec = fdh->elf.root.u.def.section; | |
9422 | sym_value = fdh->elf.root.u.def.value; | |
9423 | if (sym_sec->output_section != NULL) | |
9424 | ok_dest = TRUE; | |
9425 | } | |
99877b66 AM |
9426 | else |
9427 | fdh = NULL; | |
8387904d | 9428 | } |
7fe2b9a6 AM |
9429 | } |
9430 | else | |
9431 | { | |
9432 | bfd_set_error (bfd_error_bad_value); | |
9433 | goto error_ret_free_internal; | |
721956f4 AM |
9434 | } |
9435 | ||
8843416a AM |
9436 | destination = 0; |
9437 | if (ok_dest) | |
9438 | { | |
9439 | sym_value += irela->r_addend; | |
9440 | destination = (sym_value | |
9441 | + sym_sec->output_offset | |
9442 | + sym_sec->output_section->vma); | |
9443 | } | |
9444 | ||
8387904d | 9445 | code_sec = sym_sec; |
74f0fb50 AM |
9446 | opd = get_opd_info (sym_sec); |
9447 | if (opd != NULL) | |
8387904d AM |
9448 | { |
9449 | bfd_vma dest; | |
9450 | ||
74f0fb50 | 9451 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 9452 | { |
74f0fb50 | 9453 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
9454 | if (adjust == -1) |
9455 | continue; | |
9456 | sym_value += adjust; | |
9457 | } | |
9458 | dest = opd_entry_value (sym_sec, sym_value, | |
9459 | &code_sec, &sym_value); | |
9460 | if (dest != (bfd_vma) -1) | |
9461 | { | |
9462 | destination = dest; | |
9463 | if (fdh != NULL) | |
9464 | { | |
9465 | /* Fixup old ABI sym to point at code | |
9466 | entry. */ | |
99877b66 | 9467 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9468 | hash->elf.root.u.def.section = code_sec; |
9469 | hash->elf.root.u.def.value = sym_value; | |
9470 | } | |
9471 | } | |
9472 | } | |
9473 | ||
721956f4 AM |
9474 | /* Determine what (if any) linker stub is needed. */ |
9475 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9476 | destination); | |
ad8e1ba5 AM |
9477 | |
9478 | if (stub_type != ppc_stub_plt_call) | |
9479 | { | |
9480 | /* Check whether we need a TOC adjusting stub. | |
9481 | Since the linker pastes together pieces from | |
9482 | different object files when creating the | |
9483 | _init and _fini functions, it may be that a | |
9484 | call to what looks like a local sym is in | |
9485 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9486 | if (code_sec != NULL |
9487 | && code_sec->output_section != NULL | |
9488 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9489 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9490 | && (code_sec->has_toc_reloc |
9491 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9492 | stub_type = ppc_stub_long_branch_r2off; |
9493 | } | |
9494 | ||
721956f4 AM |
9495 | if (stub_type == ppc_stub_none) |
9496 | continue; | |
9497 | ||
411e1bfb AM |
9498 | /* __tls_get_addr calls might be eliminated. */ |
9499 | if (stub_type != ppc_stub_plt_call | |
9500 | && hash != NULL | |
8387904d AM |
9501 | && (hash == htab->tls_get_addr |
9502 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9503 | && section->has_tls_reloc |
9504 | && irela != internal_relocs) | |
9505 | { | |
9506 | /* Get tls info. */ | |
e7b938ca | 9507 | char *tls_mask; |
411e1bfb | 9508 | |
0d4792f7 | 9509 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9510 | irela - 1, input_bfd)) |
9511 | goto error_ret_free_internal; | |
e7b938ca | 9512 | if (*tls_mask != 0) |
411e1bfb AM |
9513 | continue; |
9514 | } | |
9515 | ||
721956f4 AM |
9516 | /* Support for grouping stub sections. */ |
9517 | id_sec = htab->stub_group[section->id].link_sec; | |
9518 | ||
9519 | /* Get the name of this stub. */ | |
9520 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9521 | if (!stub_name) | |
9522 | goto error_ret_free_internal; | |
9523 | ||
9524 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9525 | stub_name, FALSE, FALSE); |
721956f4 AM |
9526 | if (stub_entry != NULL) |
9527 | { | |
9528 | /* The proper stub has already been created. */ | |
9529 | free (stub_name); | |
9530 | continue; | |
9531 | } | |
9532 | ||
9533 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9534 | if (stub_entry == NULL) | |
9535 | { | |
9536 | free (stub_name); | |
6cdc0ccc AM |
9537 | error_ret_free_internal: |
9538 | if (elf_section_data (section)->relocs == NULL) | |
9539 | free (internal_relocs); | |
9540 | error_ret_free_local: | |
9541 | if (local_syms != NULL | |
9542 | && (symtab_hdr->contents | |
9543 | != (unsigned char *) local_syms)) | |
9544 | free (local_syms); | |
b34976b6 | 9545 | return FALSE; |
721956f4 AM |
9546 | } |
9547 | ||
ad8e1ba5 | 9548 | stub_entry->stub_type = stub_type; |
721956f4 | 9549 | stub_entry->target_value = sym_value; |
8387904d | 9550 | stub_entry->target_section = code_sec; |
721956f4 | 9551 | stub_entry->h = hash; |
411e1bfb | 9552 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9553 | |
9554 | if (stub_entry->h != NULL) | |
9555 | htab->stub_globals += 1; | |
721956f4 AM |
9556 | } |
9557 | ||
9558 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9559 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9560 | free (internal_relocs); |
721956f4 | 9561 | } |
6cdc0ccc AM |
9562 | |
9563 | if (local_syms != NULL | |
9564 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9565 | { | |
9566 | if (!info->keep_memory) | |
9567 | free (local_syms); | |
9568 | else | |
9569 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9570 | } | |
721956f4 AM |
9571 | } |
9572 | ||
5c3dead3 | 9573 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9574 | stub sections. */ |
9575 | for (stub_sec = htab->stub_bfd->sections; | |
9576 | stub_sec != NULL; | |
9577 | stub_sec = stub_sec->next) | |
e717da7e | 9578 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9579 | { |
5c3dead3 | 9580 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9581 | stub_sec->size = 0; |
9582 | stub_sec->reloc_count = 0; | |
84f5d08e | 9583 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 9584 | } |
eea6121a AM |
9585 | |
9586 | htab->brlt->size = 0; | |
84f5d08e AM |
9587 | htab->brlt->reloc_count = 0; |
9588 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 9589 | if (htab->relbrlt != NULL) |
eea6121a | 9590 | htab->relbrlt->size = 0; |
721956f4 | 9591 | |
63bc6f6c | 9592 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9593 | |
5c3dead3 AM |
9594 | for (stub_sec = htab->stub_bfd->sections; |
9595 | stub_sec != NULL; | |
9596 | stub_sec = stub_sec->next) | |
9597 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9598 | && stub_sec->rawsize != stub_sec->size) | |
9599 | break; | |
9600 | ||
9601 | /* Exit from this loop when no stubs have been added, and no stubs | |
9602 | have changed size. */ | |
9603 | if (stub_sec == NULL) | |
9604 | break; | |
9605 | ||
721956f4 AM |
9606 | /* Ask the linker to do its stuff. */ |
9607 | (*htab->layout_sections_again) (); | |
9608 | } | |
9609 | ||
c456f082 | 9610 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9611 | section is empty, but it's too late. If we strip sections here, |
9612 | the dynamic symbol table is corrupted since the section symbol | |
9613 | for the stripped section isn't written. */ | |
721956f4 | 9614 | |
b34976b6 | 9615 | return TRUE; |
721956f4 AM |
9616 | } |
9617 | ||
9618 | /* Called after we have determined section placement. If sections | |
805fc799 | 9619 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9620 | |
805fc799 | 9621 | bfd_vma |
4ce794b7 | 9622 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9623 | { |
805fc799 AM |
9624 | asection *s; |
9625 | bfd_vma TOCstart; | |
721956f4 | 9626 | |
805fc799 AM |
9627 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9628 | order. The TOC starts where the first of these sections starts. */ | |
9629 | s = bfd_get_section_by_name (obfd, ".got"); | |
9630 | if (s == NULL) | |
9631 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9632 | if (s == NULL) | |
9633 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9634 | if (s == NULL) | |
9635 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9636 | if (s == NULL) | |
9637 | { | |
9638 | /* This may happen for | |
9639 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9640 | .toc directive | |
9641 | o bad linker script | |
9642 | o --gc-sections and empty TOC sections | |
9643 | ||
9644 | FIXME: Warn user? */ | |
9645 | ||
9646 | /* Look for a likely section. We probably won't even be | |
9647 | using TOCstart. */ | |
9648 | for (s = obfd->sections; s != NULL; s = s->next) | |
9649 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9650 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9651 | break; | |
721956f4 | 9652 | if (s == NULL) |
805fc799 AM |
9653 | for (s = obfd->sections; s != NULL; s = s->next) |
9654 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9655 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9656 | break; | |
721956f4 | 9657 | if (s == NULL) |
805fc799 AM |
9658 | for (s = obfd->sections; s != NULL; s = s->next) |
9659 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9660 | break; | |
721956f4 | 9661 | if (s == NULL) |
805fc799 AM |
9662 | for (s = obfd->sections; s != NULL; s = s->next) |
9663 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9664 | break; | |
9665 | } | |
721956f4 | 9666 | |
805fc799 AM |
9667 | TOCstart = 0; |
9668 | if (s != NULL) | |
9669 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9670 | |
805fc799 | 9671 | return TOCstart; |
721956f4 AM |
9672 | } |
9673 | ||
9674 | /* Build all the stubs associated with the current output file. | |
9675 | The stubs are kept in a hash table attached to the main linker | |
9676 | hash table. This function is called via gldelf64ppc_finish. */ | |
9677 | ||
b34976b6 | 9678 | bfd_boolean |
4ce794b7 AM |
9679 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9680 | struct bfd_link_info *info, | |
9681 | char **stats) | |
5d1634d7 AM |
9682 | { |
9683 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9684 | asection *stub_sec; |
5d1634d7 | 9685 | bfd_byte *p; |
e717da7e | 9686 | int stub_sec_count = 0; |
5d1634d7 | 9687 | |
ad8e1ba5 | 9688 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9689 | |
9690 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9691 | for (stub_sec = htab->stub_bfd->sections; |
9692 | stub_sec != NULL; | |
9693 | stub_sec = stub_sec->next) | |
eea6121a AM |
9694 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9695 | && stub_sec->size != 0) | |
e717da7e | 9696 | { |
eea6121a AM |
9697 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9698 | if (stub_sec->contents == NULL) | |
9699 | return FALSE; | |
9700 | /* We want to check that built size is the same as calculated | |
9701 | size. rawsize is a convenient location to use. */ | |
9702 | stub_sec->rawsize = stub_sec->size; | |
9703 | stub_sec->size = 0; | |
e717da7e | 9704 | } |
5d1634d7 | 9705 | |
23eb7e01 | 9706 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9707 | { |
9f951329 | 9708 | unsigned int indx; |
ad8e1ba5 | 9709 | bfd_vma plt0; |
9f951329 | 9710 | |
721956f4 | 9711 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9712 | if (htab->emit_stub_syms) |
9713 | { | |
9714 | struct elf_link_hash_entry *h; | |
9715 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9716 | if (h == NULL) | |
9717 | return FALSE; | |
9718 | if (h->root.type == bfd_link_hash_new) | |
9719 | { | |
9720 | h->root.type = bfd_link_hash_defined; | |
9721 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9722 | h->root.u.def.value = 8; |
f5385ebf AM |
9723 | h->ref_regular = 1; |
9724 | h->def_regular = 1; | |
9725 | h->ref_regular_nonweak = 1; | |
9726 | h->forced_local = 1; | |
9727 | h->non_elf = 0; | |
97b639ba AM |
9728 | } |
9729 | } | |
4ce794b7 | 9730 | p = htab->glink->contents; |
ee4bf8d2 AM |
9731 | plt0 = (htab->plt->output_section->vma |
9732 | + htab->plt->output_offset | |
9733 | - (htab->glink->output_section->vma | |
9734 | + htab->glink->output_offset | |
9735 | + 16)); | |
9736 | bfd_put_64 (htab->glink->owner, plt0, p); | |
9737 | p += 8; | |
9738 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 9739 | p += 4; |
ee4bf8d2 | 9740 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 9741 | p += 4; |
ee4bf8d2 | 9742 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 9743 | p += 4; |
ee4bf8d2 | 9744 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 9745 | p += 4; |
ee4bf8d2 | 9746 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 9747 | p += 4; |
ee4bf8d2 | 9748 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 9749 | p += 4; |
ee4bf8d2 | 9750 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 9751 | p += 4; |
4ce794b7 | 9752 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9753 | p += 4; |
4ce794b7 | 9754 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9755 | p += 4; |
4ce794b7 | 9756 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9757 | p += 4; |
4ce794b7 | 9758 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 9759 | p += 4; |
ee4bf8d2 AM |
9760 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
9761 | { | |
9762 | bfd_put_32 (htab->glink->owner, NOP, p); | |
9763 | p += 4; | |
9764 | } | |
ad8e1ba5 | 9765 | |
9f951329 AM |
9766 | /* Build the .glink lazy link call stubs. */ |
9767 | indx = 0; | |
eea6121a | 9768 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9769 | { |
9770 | if (indx < 0x8000) | |
9771 | { | |
4ce794b7 | 9772 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9773 | p += 4; |
9774 | } | |
9775 | else | |
9776 | { | |
4ce794b7 | 9777 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9778 | p += 4; |
4ce794b7 | 9779 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9780 | p += 4; |
9781 | } | |
4ce794b7 | 9782 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 9783 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 9784 | indx++; |
9f951329 AM |
9785 | p += 4; |
9786 | } | |
eea6121a | 9787 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9788 | } |
5d1634d7 | 9789 | |
eea6121a | 9790 | if (htab->brlt->size != 0) |
721956f4 | 9791 | { |
4ce794b7 | 9792 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9793 | htab->brlt->size); |
4ce794b7 | 9794 | if (htab->brlt->contents == NULL) |
b34976b6 | 9795 | return FALSE; |
721956f4 | 9796 | } |
ee75fd95 | 9797 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9798 | { |
9799 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9800 | htab->relbrlt->size); |
63bc6f6c AM |
9801 | if (htab->relbrlt->contents == NULL) |
9802 | return FALSE; | |
9803 | } | |
5d1634d7 | 9804 | |
721956f4 AM |
9805 | /* Build the stubs as directed by the stub hash table. */ |
9806 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9807 | |
aa8a7074 AM |
9808 | if (htab->relbrlt != NULL) |
9809 | htab->relbrlt->reloc_count = 0; | |
9810 | ||
721956f4 AM |
9811 | for (stub_sec = htab->stub_bfd->sections; |
9812 | stub_sec != NULL; | |
9813 | stub_sec = stub_sec->next) | |
e717da7e AM |
9814 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9815 | { | |
9816 | stub_sec_count += 1; | |
eea6121a | 9817 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9818 | break; |
9819 | } | |
5d1634d7 | 9820 | |
721956f4 | 9821 | if (stub_sec != NULL |
eea6121a | 9822 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9823 | { |
b34976b6 | 9824 | htab->stub_error = TRUE; |
721956f4 | 9825 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9826 | } |
721956f4 | 9827 | |
d2a300cf AM |
9828 | if (htab->stub_error) |
9829 | return FALSE; | |
9830 | ||
9831 | if (stats != NULL) | |
9832 | { | |
9833 | *stats = bfd_malloc (500); | |
9834 | if (*stats == NULL) | |
9835 | return FALSE; | |
9836 | ||
ee75fd95 | 9837 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9838 | " branch %lu\n" |
9839 | " toc adjust %lu\n" | |
9840 | " long branch %lu\n" | |
9841 | " long toc adj %lu\n" | |
9842 | " plt call %lu"), | |
e717da7e | 9843 | stub_sec_count, |
ee75fd95 | 9844 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9845 | htab->stub_count[ppc_stub_long_branch - 1], |
9846 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9847 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9848 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9849 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9850 | } |
9851 | return TRUE; | |
5bd4f169 AM |
9852 | } |
9853 | ||
99877b66 AM |
9854 | /* This function undoes the changes made by add_symbol_adjust. */ |
9855 | ||
9856 | static bfd_boolean | |
9857 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9858 | { | |
9859 | struct ppc_link_hash_entry *eh; | |
9860 | ||
9861 | if (h->root.type == bfd_link_hash_indirect) | |
9862 | return TRUE; | |
9863 | ||
9864 | if (h->root.type == bfd_link_hash_warning) | |
9865 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9866 | ||
9867 | eh = (struct ppc_link_hash_entry *) h; | |
9868 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9869 | return TRUE; | |
9870 | ||
9871 | eh->elf.root.type = bfd_link_hash_undefined; | |
9872 | return TRUE; | |
9873 | } | |
9874 | ||
9875 | void | |
9876 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9877 | { | |
9878 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9879 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9880 | } | |
9881 | ||
60124e18 AM |
9882 | /* What to do when ld finds relocations against symbols defined in |
9883 | discarded sections. */ | |
9884 | ||
9885 | static unsigned int | |
9886 | ppc64_elf_action_discarded (asection *sec) | |
9887 | { | |
9888 | if (strcmp (".opd", sec->name) == 0) | |
9889 | return 0; | |
9890 | ||
9891 | if (strcmp (".toc", sec->name) == 0) | |
9892 | return 0; | |
9893 | ||
bce50a28 JJ |
9894 | if (strcmp (".toc1", sec->name) == 0) |
9895 | return 0; | |
9896 | ||
60124e18 AM |
9897 | return _bfd_elf_default_action_discarded (sec); |
9898 | } | |
9899 | ||
5bd4f169 AM |
9900 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9901 | to handle the relocations for a section. | |
9902 | ||
9903 | The relocs are always passed as Rela structures; if the section | |
9904 | actually uses Rel structures, the r_addend field will always be | |
9905 | zero. | |
9906 | ||
9907 | This function is responsible for adjust the section contents as | |
9908 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9909 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9910 | necessary. |
9911 | ||
9912 | This function does not have to worry about setting the reloc | |
9913 | address or the reloc symbol index. | |
9914 | ||
9915 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9916 | ||
9917 | LOCAL_SECTIONS is an array giving the section in the input file | |
9918 | corresponding to the st_shndx field of each local symbol. | |
9919 | ||
9920 | The global hash table entry for the global symbols can be found | |
9921 | via elf_sym_hashes (input_bfd). | |
9922 | ||
1049f94e | 9923 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9924 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9925 | going to be the section symbol corresponding to the output | |
9926 | section, which means that the addend must be adjusted | |
9927 | accordingly. */ | |
9928 | ||
b34976b6 | 9929 | static bfd_boolean |
4ce794b7 AM |
9930 | ppc64_elf_relocate_section (bfd *output_bfd, |
9931 | struct bfd_link_info *info, | |
9932 | bfd *input_bfd, | |
9933 | asection *input_section, | |
9934 | bfd_byte *contents, | |
9935 | Elf_Internal_Rela *relocs, | |
9936 | Elf_Internal_Sym *local_syms, | |
9937 | asection **local_sections) | |
5bd4f169 | 9938 | { |
65f38f15 | 9939 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9940 | Elf_Internal_Shdr *symtab_hdr; |
9941 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9942 | Elf_Internal_Rela *rel; |
9943 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9944 | Elf_Internal_Rela outrel; |
9945 | bfd_byte *loc; | |
411e1bfb | 9946 | struct got_entry **local_got_ents; |
5bd4f169 | 9947 | bfd_vma TOCstart; |
b34976b6 AM |
9948 | bfd_boolean ret = TRUE; |
9949 | bfd_boolean is_opd; | |
96e0dda4 | 9950 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9951 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 9952 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 9953 | |
65f38f15 | 9954 | /* Initialize howto table if needed. */ |
5bd4f169 | 9955 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9956 | ppc_howto_init (); |
9957 | ||
65f38f15 | 9958 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9959 | |
9960 | /* Don't relocate stub sections. */ | |
9961 | if (input_section->owner == htab->stub_bfd) | |
9962 | return TRUE; | |
9963 | ||
0ffa91dd NC |
9964 | BFD_ASSERT (is_ppc64_elf_target (input_bfd->xvec)); |
9965 | ||
411e1bfb | 9966 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9967 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 9968 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 9969 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 9970 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 9971 | |
5bd4f169 AM |
9972 | rel = relocs; |
9973 | relend = relocs + input_section->reloc_count; | |
9974 | for (; rel < relend; rel++) | |
9975 | { | |
04c9666a | 9976 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9977 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9978 | bfd_reloc_status_type r; |
9979 | Elf_Internal_Sym *sym; | |
9980 | asection *sec; | |
039b3fef AM |
9981 | struct elf_link_hash_entry *h_elf; |
9982 | struct ppc_link_hash_entry *h; | |
9983 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9984 | const char *sym_name; |
0d4792f7 | 9985 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9986 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9987 | char sym_type; |
5bd4f169 | 9988 | bfd_vma relocation; |
b34976b6 AM |
9989 | bfd_boolean unresolved_reloc; |
9990 | bfd_boolean warned; | |
50bc7936 | 9991 | unsigned long insn, mask; |
721956f4 AM |
9992 | struct ppc_stub_hash_entry *stub_entry; |
9993 | bfd_vma max_br_offset; | |
9994 | bfd_vma from; | |
5bd4f169 | 9995 | |
4ce794b7 | 9996 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9997 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9998 | |
9999 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
10000 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
10001 | proper TOC base to use. */ | |
10002 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
10003 | && rel != relocs | |
10004 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
10005 | && is_opd) | |
10006 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
10007 | ||
4ce794b7 AM |
10008 | sym = NULL; |
10009 | sec = NULL; | |
039b3fef | 10010 | h_elf = NULL; |
4ce794b7 | 10011 | sym_name = NULL; |
b34976b6 AM |
10012 | unresolved_reloc = FALSE; |
10013 | warned = FALSE; | |
4cc603a5 | 10014 | orig_addend = rel->r_addend; |
65f38f15 | 10015 | |
0b13192e | 10016 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
10017 | { |
10018 | /* It's a local symbol. */ | |
74f0fb50 | 10019 | struct _opd_sec_data *opd; |
4025353c | 10020 | |
5bd4f169 AM |
10021 | sym = local_syms + r_symndx; |
10022 | sec = local_sections[r_symndx]; | |
26c61ae5 | 10023 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 10024 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 10025 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
10026 | opd = get_opd_info (sec); |
10027 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 10028 | { |
74f0fb50 | 10029 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
10030 | if (adjust == -1) |
10031 | relocation = 0; | |
10032 | else | |
4cc603a5 AM |
10033 | { |
10034 | /* If this is a relocation against the opd section sym | |
10035 | and we have edited .opd, adjust the reloc addend so | |
10036 | that ld -r and ld --emit-relocs output is correct. | |
10037 | If it is a reloc against some other .opd symbol, | |
10038 | then the symbol value will be adjusted later. */ | |
10039 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10040 | rel->r_addend += adjust; | |
10041 | else | |
10042 | relocation += adjust; | |
10043 | } | |
1e2f5b6e | 10044 | } |
5bd4f169 AM |
10045 | } |
10046 | else | |
10047 | { | |
b2a8e766 AM |
10048 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
10049 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 10050 | h_elf, sec, relocation, |
b2a8e766 | 10051 | unresolved_reloc, warned); |
039b3fef AM |
10052 | sym_name = h_elf->root.root.string; |
10053 | sym_type = h_elf->type; | |
5bd4f169 | 10054 | } |
039b3fef | 10055 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 10056 | |
ab96bf03 AM |
10057 | if (sec != NULL && elf_discarded_section (sec)) |
10058 | { | |
10059 | /* For relocs against symbols from removed linkonce sections, | |
10060 | or sections discarded by a linker script, we just want the | |
10061 | section contents zeroed. Avoid any special processing. */ | |
10062 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10063 | contents + rel->r_offset); | |
10064 | rel->r_info = 0; | |
10065 | rel->r_addend = 0; | |
10066 | continue; | |
10067 | } | |
10068 | ||
10069 | if (info->relocatable) | |
10070 | continue; | |
10071 | ||
951fd09b AM |
10072 | /* TLS optimizations. Replace instruction sequences and relocs |
10073 | based on information we collected in tls_optimize. We edit | |
10074 | RELOCS so that --emit-relocs will output something sensible | |
10075 | for the final instruction stream. */ | |
10076 | tls_mask = 0; | |
10077 | tls_gd = 0; | |
0d4792f7 | 10078 | toc_symndx = 0; |
d881513a | 10079 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
10080 | { |
10081 | if (h != NULL) | |
039b3fef | 10082 | tls_mask = h->tls_mask; |
411e1bfb AM |
10083 | else if (local_got_ents != NULL) |
10084 | { | |
e7b938ca AM |
10085 | char *lgot_masks; |
10086 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
10087 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 10088 | } |
0d4792f7 AM |
10089 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
10090 | { | |
10091 | /* Check for toc tls entries. */ | |
10092 | char *toc_tls; | |
10093 | ||
10094 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
10095 | rel, input_bfd)) | |
10096 | return FALSE; | |
10097 | ||
10098 | if (toc_tls) | |
10099 | tls_mask = *toc_tls; | |
10100 | } | |
10101 | } | |
10102 | ||
10103 | /* Check that tls relocs are used with tls syms, and non-tls | |
10104 | relocs are used with non-tls syms. */ | |
10105 | if (r_symndx != 0 | |
10106 | && r_type != R_PPC64_NONE | |
10107 | && (h == NULL | |
039b3fef AM |
10108 | || h->elf.root.type == bfd_link_hash_defined |
10109 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
10110 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
10111 | { | |
10112 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
10113 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
10114 | ; | |
10115 | else | |
10116 | (*_bfd_error_handler) | |
10117 | (sym_type == STT_TLS | |
d003868e AM |
10118 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
10119 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
10120 | input_bfd, | |
10121 | input_section, | |
0d4792f7 AM |
10122 | (long) rel->r_offset, |
10123 | ppc64_elf_howto_table[r_type]->name, | |
10124 | sym_name); | |
411e1bfb AM |
10125 | } |
10126 | ||
10127 | /* Ensure reloc mapping code below stays sane. */ | |
10128 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
10129 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
10130 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
10131 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
10132 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
10133 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
10134 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
10135 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
10136 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
10137 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
10138 | abort (); | |
0d4792f7 | 10139 | |
411e1bfb AM |
10140 | switch (r_type) |
10141 | { | |
10142 | default: | |
411e1bfb AM |
10143 | break; |
10144 | ||
10145 | case R_PPC64_TOC16: | |
10146 | case R_PPC64_TOC16_LO: | |
10147 | case R_PPC64_TOC16_DS: | |
10148 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10149 | { |
10150 | /* Check for toc tls entries. */ | |
10151 | char *toc_tls; | |
951fd09b | 10152 | int retval; |
411e1bfb | 10153 | |
0d4792f7 AM |
10154 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
10155 | rel, input_bfd); | |
951fd09b | 10156 | if (retval == 0) |
411e1bfb AM |
10157 | return FALSE; |
10158 | ||
10159 | if (toc_tls) | |
10160 | { | |
951fd09b | 10161 | tls_mask = *toc_tls; |
411e1bfb AM |
10162 | if (r_type == R_PPC64_TOC16_DS |
10163 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10164 | { |
10165 | if (tls_mask != 0 | |
10166 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10167 | goto toctprel; | |
10168 | } | |
411e1bfb | 10169 | else |
951fd09b AM |
10170 | { |
10171 | /* If we found a GD reloc pair, then we might be | |
10172 | doing a GD->IE transition. */ | |
10173 | if (retval == 2) | |
10174 | { | |
10175 | tls_gd = TLS_TPRELGD; | |
10176 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10177 | goto tls_ldgd_opt; |
951fd09b AM |
10178 | } |
10179 | else if (retval == 3) | |
10180 | { | |
10181 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 10182 | goto tls_ldgd_opt; |
951fd09b AM |
10183 | } |
10184 | } | |
411e1bfb AM |
10185 | } |
10186 | } | |
10187 | break; | |
10188 | ||
10189 | case R_PPC64_GOT_TPREL16_DS: | |
10190 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10191 | if (tls_mask != 0 |
10192 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10193 | { |
81407a69 | 10194 | toctprel: |
4fe5ca5b | 10195 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10196 | insn &= 31 << 21; |
10197 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10198 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10199 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10200 | if (toc_symndx != 0) |
10201 | { | |
10202 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10203 | /* We changed the symbol. Start over in order to | |
10204 | get h, sym, sec etc. right. */ | |
10205 | rel--; | |
10206 | continue; | |
10207 | } | |
10208 | else | |
10209 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10210 | } |
10211 | break; | |
10212 | ||
10213 | case R_PPC64_TLS: | |
951fd09b AM |
10214 | if (tls_mask != 0 |
10215 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10216 | { |
50bc7936 | 10217 | bfd_vma rtra; |
411e1bfb | 10218 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10219 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10220 | == ((31 << 26) | (13 << 11))) |
10221 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10222 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10223 | == ((31 << 26) | (13 << 16))) |
10224 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10225 | else | |
10226 | abort (); | |
10227 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10228 | /* add -> addi. */ | |
10229 | insn = 14 << 26; | |
10230 | else if ((insn & (31 << 1)) == 23 << 1 | |
10231 | && ((insn & (31 << 6)) < 14 << 6 | |
10232 | || ((insn & (31 << 6)) >= 16 << 6 | |
10233 | && (insn & (31 << 6)) < 24 << 6))) | |
10234 | /* load and store indexed -> dform. */ | |
10235 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10236 | else if ((insn & (31 << 1)) == 21 << 1 | |
10237 | && (insn & (0x1a << 6)) == 0) | |
10238 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10239 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10240 | | ((insn >> 6) & 1)); | |
10241 | else if ((insn & (31 << 1)) == 21 << 1 | |
10242 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10243 | /* lwax -> lwa. */ | |
10244 | insn = (58 << 26) | 2; | |
10245 | else | |
10246 | abort (); | |
10247 | insn |= rtra; | |
10248 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10249 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10250 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10251 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10252 | r_type = R_PPC64_TPREL16_LO; |
10253 | if (toc_symndx != 0) | |
10254 | { | |
10255 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10256 | /* We changed the symbol. Start over in order to | |
10257 | get h, sym, sec etc. right. */ | |
10258 | rel--; | |
10259 | continue; | |
10260 | } | |
10261 | else | |
10262 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10263 | } |
10264 | break; | |
10265 | ||
411e1bfb AM |
10266 | case R_PPC64_GOT_TLSGD16_HI: |
10267 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10268 | tls_gd = TLS_TPRELGD; |
10269 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10270 | goto tls_gdld_hi; | |
10271 | break; | |
10272 | ||
411e1bfb AM |
10273 | case R_PPC64_GOT_TLSLD16_HI: |
10274 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10275 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10276 | { |
951fd09b AM |
10277 | tls_gdld_hi: |
10278 | if ((tls_mask & tls_gd) != 0) | |
10279 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10280 | + R_PPC64_GOT_TPREL16_DS); | |
10281 | else | |
411e1bfb | 10282 | { |
951fd09b | 10283 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10284 | rel->r_offset -= d_offset; |
951fd09b | 10285 | r_type = R_PPC64_NONE; |
411e1bfb | 10286 | } |
951fd09b | 10287 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10288 | } |
10289 | break; | |
10290 | ||
951fd09b AM |
10291 | case R_PPC64_GOT_TLSGD16: |
10292 | case R_PPC64_GOT_TLSGD16_LO: | |
10293 | tls_gd = TLS_TPRELGD; | |
10294 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10295 | goto tls_ldgd_opt; |
951fd09b | 10296 | break; |
411e1bfb | 10297 | |
951fd09b AM |
10298 | case R_PPC64_GOT_TLSLD16: |
10299 | case R_PPC64_GOT_TLSLD16_LO: | |
10300 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10301 | { | |
102890f0 AM |
10302 | bfd_vma insn1, insn2, insn3; |
10303 | bfd_vma offset; | |
10304 | ||
10305 | tls_ldgd_opt: | |
10306 | /* We know that the next reloc is on a tls_get_addr | |
10307 | call, since ppc64_elf_tls_optimize checks this. */ | |
10308 | offset = rel[1].r_offset; | |
10309 | insn1 = bfd_get_32 (output_bfd, | |
10310 | contents + rel->r_offset - d_offset); | |
10311 | insn3 = bfd_get_32 (output_bfd, | |
10312 | contents + offset + 4); | |
10313 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10314 | { |
102890f0 AM |
10315 | /* IE */ |
10316 | insn1 &= (1 << 26) - (1 << 2); | |
10317 | insn1 |= 58 << 26; /* ld */ | |
10318 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10319 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10320 | R_PPC64_NONE); | |
10321 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10322 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10323 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 10324 | else |
102890f0 AM |
10325 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
10326 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10327 | } | |
10328 | else | |
10329 | { | |
10330 | /* LE */ | |
10331 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10332 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10333 | if (tls_gd == 0) | |
951fd09b | 10334 | { |
102890f0 AM |
10335 | /* Was an LD reloc. */ |
10336 | r_symndx = 0; | |
10337 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
10338 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10339 | } |
102890f0 AM |
10340 | else if (toc_symndx != 0) |
10341 | r_symndx = toc_symndx; | |
10342 | r_type = R_PPC64_TPREL16_HA; | |
10343 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10344 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10345 | R_PPC64_TPREL16_LO); | |
10346 | rel[1].r_offset += d_offset; | |
10347 | } | |
10348 | if (insn3 == NOP | |
10349 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10350 | { | |
10351 | insn3 = insn2; | |
10352 | insn2 = NOP; | |
10353 | rel[1].r_offset += 4; | |
10354 | } | |
10355 | bfd_put_32 (output_bfd, insn1, | |
10356 | contents + rel->r_offset - d_offset); | |
10357 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10358 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
10359 | if (tls_gd == 0 || toc_symndx != 0) | |
10360 | { | |
10361 | /* We changed the symbol. Start over in order | |
10362 | to get h, sym, sec etc. right. */ | |
10363 | rel--; | |
10364 | continue; | |
411e1bfb | 10365 | } |
411e1bfb | 10366 | } |
411e1bfb AM |
10367 | break; |
10368 | ||
10369 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10370 | if (rel + 1 < relend |
10371 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10372 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10373 | { |
951fd09b AM |
10374 | if ((tls_mask & TLS_GD) == 0) |
10375 | { | |
10376 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10377 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10378 | r_type = R_PPC64_TPREL64; | |
10379 | else | |
10380 | { | |
4ce794b7 | 10381 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10382 | r_type = R_PPC64_NONE; |
10383 | } | |
10384 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10385 | } | |
10386 | } | |
10387 | else | |
10388 | { | |
10389 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10390 | { |
4ce794b7 | 10391 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10392 | r_type = R_PPC64_NONE; |
951fd09b | 10393 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10394 | } |
411e1bfb AM |
10395 | } |
10396 | break; | |
10397 | ||
10398 | case R_PPC64_TPREL64: | |
951fd09b | 10399 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10400 | { |
10401 | r_type = R_PPC64_NONE; | |
10402 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10403 | } | |
10404 | break; | |
10405 | } | |
10406 | ||
10407 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10408 | insn = 0; |
b25116a9 AM |
10409 | max_br_offset = 1 << 25; |
10410 | addend = rel->r_addend; | |
65f38f15 | 10411 | switch (r_type) |
5bd4f169 AM |
10412 | { |
10413 | default: | |
65f38f15 | 10414 | break; |
5bd4f169 | 10415 | |
65f38f15 AM |
10416 | /* Branch taken prediction relocations. */ |
10417 | case R_PPC64_ADDR14_BRTAKEN: | |
10418 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10419 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10420 | /* Fall thru. */ | |
65f38f15 | 10421 | |
86c76c7b | 10422 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10423 | case R_PPC64_ADDR14_BRNTAKEN: |
10424 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10425 | insn |= bfd_get_32 (output_bfd, |
10426 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10427 | /* Fall thru. */ |
86c76c7b | 10428 | |
b25116a9 AM |
10429 | case R_PPC64_REL14: |
10430 | max_br_offset = 1 << 15; | |
10431 | /* Fall thru. */ | |
5bd4f169 | 10432 | |
65f38f15 | 10433 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10434 | /* Calls to functions with a different TOC, such as calls to |
10435 | shared objects, need to alter the TOC pointer. This is | |
10436 | done using a linkage stub. A REL24 branching to these | |
10437 | linkage stubs needs to be followed by a nop, as the nop | |
10438 | will be replaced with an instruction to restore the TOC | |
10439 | base pointer. */ | |
b25116a9 | 10440 | stub_entry = NULL; |
8387904d | 10441 | fdh = h; |
ad8e1ba5 | 10442 | if (((h != NULL |
039b3fef AM |
10443 | && (((fdh = h->oh) != NULL |
10444 | && fdh->elf.plt.plist != NULL) | |
10445 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10446 | || (sec != NULL |
ad8e1ba5 | 10447 | && sec->output_section != NULL |
b25116a9 | 10448 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10449 | && (htab->stub_group[sec->id].toc_off |
10450 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10451 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10452 | rel, htab)) != NULL |
10453 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10454 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10455 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10456 | { |
b25116a9 | 10457 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10458 | |
eea6121a | 10459 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10460 | { |
b25116a9 AM |
10461 | unsigned long nop; |
10462 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10463 | if (nop == NOP | |
10464 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10465 | { |
4ce794b7 | 10466 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10467 | contents + rel->r_offset + 4); |
b25116a9 | 10468 | can_plt_call = TRUE; |
41bd81ab | 10469 | } |
5bd4f169 | 10470 | } |
721956f4 AM |
10471 | |
10472 | if (!can_plt_call) | |
10473 | { | |
ad8e1ba5 AM |
10474 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10475 | { | |
10476 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10477 | and link, don't require a nop. However, don't |
10478 | allow tail calls in a shared library as they | |
10479 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10480 | unsigned long br; |
10481 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10482 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10483 | can_plt_call = TRUE; |
15b552e9 AM |
10484 | else |
10485 | stub_entry = NULL; | |
ad8e1ba5 | 10486 | } |
6ab189d5 | 10487 | else if (h != NULL |
039b3fef | 10488 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10489 | ".__libc_start_main") == 0) |
10490 | { | |
10491 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10492 | can_plt_call = TRUE; |
6ab189d5 | 10493 | } |
ad8e1ba5 AM |
10494 | else |
10495 | { | |
10496 | if (strcmp (input_section->output_section->name, | |
10497 | ".init") == 0 | |
10498 | || strcmp (input_section->output_section->name, | |
10499 | ".fini") == 0) | |
10500 | (*_bfd_error_handler) | |
d003868e | 10501 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10502 | "not supported using your crt files; " |
10503 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10504 | input_bfd, |
10505 | input_section, | |
ad8e1ba5 AM |
10506 | (long) rel->r_offset); |
10507 | else | |
10508 | (*_bfd_error_handler) | |
d003868e | 10509 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10510 | "does not allow automatic multiple TOCs; " |
10511 | "recompile with -mminimal-toc or " | |
10512 | "-fno-optimize-sibling-calls, " | |
10513 | "or make `%s' extern"), | |
d003868e AM |
10514 | input_bfd, |
10515 | input_section, | |
ad8e1ba5 AM |
10516 | (long) rel->r_offset, |
10517 | sym_name, | |
10518 | sym_name); | |
10519 | bfd_set_error (bfd_error_bad_value); | |
10520 | ret = FALSE; | |
10521 | } | |
721956f4 AM |
10522 | } |
10523 | ||
b25116a9 AM |
10524 | if (can_plt_call |
10525 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10526 | unresolved_reloc = FALSE; | |
10527 | } | |
10528 | ||
8387904d AM |
10529 | if (stub_entry == NULL |
10530 | && get_opd_info (sec) != NULL) | |
10531 | { | |
10532 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10533 | bfd_vma off = (relocation + addend |
10534 | - sec->output_section->vma | |
10535 | - sec->output_offset); | |
8387904d AM |
10536 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10537 | if (dest != (bfd_vma) -1) | |
10538 | { | |
10539 | relocation = dest; | |
10540 | addend = 0; | |
10541 | } | |
10542 | } | |
10543 | ||
b25116a9 AM |
10544 | /* If the branch is out of reach we ought to have a long |
10545 | branch stub. */ | |
10546 | from = (rel->r_offset | |
10547 | + input_section->output_offset | |
10548 | + input_section->output_section->vma); | |
10549 | ||
10550 | if (stub_entry == NULL | |
4cc603a5 | 10551 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10552 | >= 2 * max_br_offset) |
10553 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10554 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10555 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10556 | htab); | |
b25116a9 AM |
10557 | |
10558 | if (stub_entry != NULL) | |
10559 | { | |
10560 | /* Munge up the value and addend so that we call the stub | |
10561 | rather than the procedure directly. */ | |
10562 | relocation = (stub_entry->stub_offset | |
10563 | + stub_entry->stub_sec->output_offset | |
10564 | + stub_entry->stub_sec->output_section->vma); | |
10565 | addend = 0; | |
10566 | } | |
10567 | ||
10568 | if (insn != 0) | |
10569 | { | |
10570 | if (is_power4) | |
721956f4 | 10571 | { |
b25116a9 AM |
10572 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10573 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10574 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10575 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10576 | insn |= 0x02 << 21; | |
10577 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10578 | insn |= 0x08 << 21; | |
10579 | else | |
10580 | break; | |
10581 | } | |
10582 | else | |
10583 | { | |
10584 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10585 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10586 | insn ^= 0x01 << 21; |
721956f4 | 10587 | } |
b25116a9 AM |
10588 | |
10589 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10590 | } |
e86ce104 | 10591 | |
06da1e8e AM |
10592 | /* NOP out calls to undefined weak functions. |
10593 | We can thus call a weak function without first | |
10594 | checking whether the function is defined. */ | |
b25116a9 | 10595 | else if (h != NULL |
039b3fef | 10596 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10597 | && r_type == R_PPC64_REL24 |
10598 | && relocation == 0 | |
4cc603a5 | 10599 | && addend == 0) |
e86ce104 | 10600 | { |
06da1e8e AM |
10601 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10602 | continue; | |
e86ce104 | 10603 | } |
65f38f15 AM |
10604 | break; |
10605 | } | |
5bd4f169 | 10606 | |
65f38f15 | 10607 | /* Set `addend'. */ |
411e1bfb | 10608 | tls_type = 0; |
65f38f15 AM |
10609 | switch (r_type) |
10610 | { | |
10611 | default: | |
10612 | (*_bfd_error_handler) | |
d003868e AM |
10613 | (_("%B: unknown relocation type %d for symbol %s"), |
10614 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10615 | |
65f38f15 | 10616 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10617 | ret = FALSE; |
65f38f15 | 10618 | continue; |
5bd4f169 | 10619 | |
65f38f15 | 10620 | case R_PPC64_NONE: |
411e1bfb | 10621 | case R_PPC64_TLS: |
04c9666a AM |
10622 | case R_PPC64_GNU_VTINHERIT: |
10623 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10624 | continue; |
5bd4f169 AM |
10625 | |
10626 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10627 | address in the GOT as relocation value instead of the | |
411e1bfb | 10628 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10629 | symbol and put the symbol value there. */ |
411e1bfb AM |
10630 | case R_PPC64_GOT_TLSGD16: |
10631 | case R_PPC64_GOT_TLSGD16_LO: | |
10632 | case R_PPC64_GOT_TLSGD16_HI: | |
10633 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10634 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10635 | goto dogot; |
10636 | ||
10637 | case R_PPC64_GOT_TLSLD16: | |
10638 | case R_PPC64_GOT_TLSLD16_LO: | |
10639 | case R_PPC64_GOT_TLSLD16_HI: | |
10640 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10641 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10642 | goto dogot; |
10643 | ||
10644 | case R_PPC64_GOT_TPREL16_DS: | |
10645 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10646 | case R_PPC64_GOT_TPREL16_HI: | |
10647 | case R_PPC64_GOT_TPREL16_HA: | |
10648 | tls_type = TLS_TLS | TLS_TPREL; | |
10649 | goto dogot; | |
10650 | ||
10651 | case R_PPC64_GOT_DTPREL16_DS: | |
10652 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10653 | case R_PPC64_GOT_DTPREL16_HI: | |
10654 | case R_PPC64_GOT_DTPREL16_HA: | |
10655 | tls_type = TLS_TLS | TLS_DTPREL; | |
10656 | goto dogot; | |
10657 | ||
65f38f15 AM |
10658 | case R_PPC64_GOT16: |
10659 | case R_PPC64_GOT16_LO: | |
10660 | case R_PPC64_GOT16_HI: | |
10661 | case R_PPC64_GOT16_HA: | |
10662 | case R_PPC64_GOT16_DS: | |
10663 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10664 | dogot: |
5bd4f169 AM |
10665 | { |
10666 | /* Relocation is to the entry for this symbol in the global | |
10667 | offset table. */ | |
e717da7e | 10668 | asection *got; |
d881513a | 10669 | bfd_vma *offp; |
5bd4f169 | 10670 | bfd_vma off; |
d881513a | 10671 | unsigned long indx = 0; |
65f38f15 | 10672 | |
d881513a AM |
10673 | if (tls_type == (TLS_TLS | TLS_LD) |
10674 | && (h == NULL | |
f5385ebf | 10675 | || !h->elf.def_dynamic)) |
e717da7e | 10676 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10677 | else |
5bd4f169 | 10678 | { |
d881513a | 10679 | struct got_entry *ent; |
5bd4f169 | 10680 | |
d881513a AM |
10681 | if (h != NULL) |
10682 | { | |
10683 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10684 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10685 | &h->elf) | |
d881513a | 10686 | || (info->shared |
039b3fef | 10687 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10688 | /* This is actually a static link, or it is a |
10689 | -Bsymbolic link and the symbol is defined | |
10690 | locally, or the symbol was forced to be local | |
10691 | because of a version file. */ | |
10692 | ; | |
10693 | else | |
10694 | { | |
039b3fef | 10695 | indx = h->elf.dynindx; |
d881513a AM |
10696 | unresolved_reloc = FALSE; |
10697 | } | |
039b3fef | 10698 | ent = h->elf.got.glist; |
d881513a | 10699 | } |
411e1bfb | 10700 | else |
5bd4f169 | 10701 | { |
d881513a AM |
10702 | if (local_got_ents == NULL) |
10703 | abort (); | |
10704 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10705 | } |
d881513a AM |
10706 | |
10707 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10708 | if (ent->addend == orig_addend |
e717da7e | 10709 | && ent->owner == input_bfd |
d881513a AM |
10710 | && ent->tls_type == tls_type) |
10711 | break; | |
10712 | if (ent == NULL) | |
10713 | abort (); | |
10714 | offp = &ent->got.offset; | |
5bd4f169 | 10715 | } |
411e1bfb | 10716 | |
e717da7e AM |
10717 | got = ppc64_elf_tdata (input_bfd)->got; |
10718 | if (got == NULL) | |
10719 | abort (); | |
10720 | ||
411e1bfb AM |
10721 | /* The offset must always be a multiple of 8. We use the |
10722 | least significant bit to record whether we have already | |
10723 | processed this entry. */ | |
d881513a | 10724 | off = *offp; |
411e1bfb AM |
10725 | if ((off & 1) != 0) |
10726 | off &= ~1; | |
5bd4f169 AM |
10727 | else |
10728 | { | |
411e1bfb AM |
10729 | /* Generate relocs for the dynamic linker, except in |
10730 | the case of TLSLD where we'll use one entry per | |
10731 | module. */ | |
e717da7e AM |
10732 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10733 | ||
d881513a | 10734 | *offp = off | 1; |
4e795f50 AM |
10735 | if ((info->shared || indx != 0) |
10736 | && (h == NULL | |
039b3fef AM |
10737 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10738 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10739 | { |
e717da7e AM |
10740 | outrel.r_offset = (got->output_section->vma |
10741 | + got->output_offset | |
411e1bfb | 10742 | + off); |
4cc603a5 | 10743 | outrel.r_addend = addend; |
d881513a | 10744 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10745 | { |
411e1bfb | 10746 | outrel.r_addend = 0; |
e515b051 | 10747 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10748 | if (tls_type == (TLS_TLS | TLS_GD)) |
10749 | { | |
e717da7e AM |
10750 | loc = relgot->contents; |
10751 | loc += (relgot->reloc_count++ | |
d881513a AM |
10752 | * sizeof (Elf64_External_Rela)); |
10753 | bfd_elf64_swap_reloca_out (output_bfd, | |
10754 | &outrel, loc); | |
e515b051 | 10755 | outrel.r_offset += 8; |
4cc603a5 | 10756 | outrel.r_addend = addend; |
d881513a AM |
10757 | outrel.r_info |
10758 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10759 | } |
411e1bfb | 10760 | } |
951fd09b | 10761 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10762 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10763 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10764 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10765 | else if (indx == 0) | |
81407a69 AM |
10766 | { |
10767 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10768 | ||
10769 | /* Write the .got section contents for the sake | |
10770 | of prelink. */ | |
e717da7e | 10771 | loc = got->contents + off; |
23fbd6fa JJ |
10772 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10773 | loc); | |
81407a69 | 10774 | } |
411e1bfb AM |
10775 | else |
10776 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10777 | |
10778 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10779 | { |
10780 | outrel.r_addend += relocation; | |
10781 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10782 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10783 | } |
e717da7e AM |
10784 | loc = relgot->contents; |
10785 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10786 | * sizeof (Elf64_External_Rela)); |
10787 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10788 | } | |
10789 | ||
ad8e1ba5 | 10790 | /* Init the .got section contents here if we're not |
81407a69 | 10791 | emitting a reloc. */ |
d881513a | 10792 | else |
411e1bfb | 10793 | { |
4cc603a5 | 10794 | relocation += addend; |
7b609f53 AM |
10795 | if (tls_type == (TLS_TLS | TLS_LD)) |
10796 | relocation = 1; | |
10797 | else if (tls_type != 0) | |
411e1bfb | 10798 | { |
e1918d23 | 10799 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10800 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10801 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10802 | |
7b609f53 AM |
10803 | if (tls_type == (TLS_TLS | TLS_GD)) |
10804 | { | |
10805 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10806 | got->contents + off + 8); |
7b609f53 AM |
10807 | relocation = 1; |
10808 | } | |
411e1bfb | 10809 | } |
7b609f53 | 10810 | |
411e1bfb | 10811 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10812 | got->contents + off); |
5bd4f169 AM |
10813 | } |
10814 | } | |
10815 | ||
65f38f15 AM |
10816 | if (off >= (bfd_vma) -2) |
10817 | abort (); | |
10818 | ||
e717da7e | 10819 | relocation = got->output_offset + off; |
65f38f15 | 10820 | |
5bd4f169 | 10821 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10822 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10823 | } |
65f38f15 AM |
10824 | break; |
10825 | ||
10826 | case R_PPC64_PLT16_HA: | |
10827 | case R_PPC64_PLT16_HI: | |
10828 | case R_PPC64_PLT16_LO: | |
10829 | case R_PPC64_PLT32: | |
10830 | case R_PPC64_PLT64: | |
10831 | /* Relocation is to the entry for this symbol in the | |
10832 | procedure linkage table. */ | |
10833 | ||
10834 | /* Resolve a PLT reloc against a local symbol directly, | |
10835 | without using the procedure linkage table. */ | |
10836 | if (h == NULL) | |
10837 | break; | |
10838 | ||
411e1bfb AM |
10839 | /* It's possible that we didn't make a PLT entry for this |
10840 | symbol. This happens when statically linking PIC code, | |
10841 | or when using -Bsymbolic. Go find a match if there is a | |
10842 | PLT entry. */ | |
4ce794b7 | 10843 | if (htab->plt != NULL) |
65f38f15 | 10844 | { |
411e1bfb | 10845 | struct plt_entry *ent; |
039b3fef | 10846 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10847 | if (ent->addend == orig_addend |
411e1bfb AM |
10848 | && ent->plt.offset != (bfd_vma) -1) |
10849 | { | |
4ce794b7 AM |
10850 | relocation = (htab->plt->output_section->vma |
10851 | + htab->plt->output_offset | |
411e1bfb AM |
10852 | + ent->plt.offset); |
10853 | unresolved_reloc = FALSE; | |
10854 | } | |
65f38f15 | 10855 | } |
65f38f15 | 10856 | break; |
5bd4f169 | 10857 | |
0b13192e AM |
10858 | case R_PPC64_TOC: |
10859 | /* Relocation value is TOC base. */ | |
10860 | relocation = TOCstart; | |
10861 | if (r_symndx == 0) | |
10862 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10863 | else if (unresolved_reloc) |
10864 | ; | |
10865 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10866 | relocation += htab->stub_group[sec->id].toc_off; |
10867 | else | |
10868 | unresolved_reloc = TRUE; | |
ab96bf03 | 10869 | goto dodyn; |
0b13192e | 10870 | |
5bd4f169 AM |
10871 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10872 | which is the address of the start of the TOC plus 0x8000. | |
10873 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10874 | in this order. */ | |
65f38f15 AM |
10875 | case R_PPC64_TOC16: |
10876 | case R_PPC64_TOC16_LO: | |
10877 | case R_PPC64_TOC16_HI: | |
10878 | case R_PPC64_TOC16_DS: | |
10879 | case R_PPC64_TOC16_LO_DS: | |
10880 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10881 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10882 | break; |
10883 | ||
10884 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10885 | case R_PPC64_SECTOFF: |
10886 | case R_PPC64_SECTOFF_LO: | |
10887 | case R_PPC64_SECTOFF_HI: | |
10888 | case R_PPC64_SECTOFF_DS: | |
10889 | case R_PPC64_SECTOFF_LO_DS: | |
10890 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10891 | if (sec != NULL) |
65f38f15 | 10892 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10893 | break; |
10894 | ||
721956f4 AM |
10895 | case R_PPC64_REL14: |
10896 | case R_PPC64_REL14_BRNTAKEN: | |
10897 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10898 | case R_PPC64_REL24: |
10899 | break; | |
10900 | ||
411e1bfb AM |
10901 | case R_PPC64_TPREL16: |
10902 | case R_PPC64_TPREL16_LO: | |
10903 | case R_PPC64_TPREL16_HI: | |
10904 | case R_PPC64_TPREL16_HA: | |
10905 | case R_PPC64_TPREL16_DS: | |
10906 | case R_PPC64_TPREL16_LO_DS: | |
10907 | case R_PPC64_TPREL16_HIGHER: | |
10908 | case R_PPC64_TPREL16_HIGHERA: | |
10909 | case R_PPC64_TPREL16_HIGHEST: | |
10910 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10911 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10912 | if (info->shared) |
10913 | /* The TPREL16 relocs shouldn't really be used in shared | |
10914 | libs as they will result in DT_TEXTREL being set, but | |
10915 | support them anyway. */ | |
10916 | goto dodyn; | |
10917 | break; | |
10918 | ||
10919 | case R_PPC64_DTPREL16: | |
10920 | case R_PPC64_DTPREL16_LO: | |
10921 | case R_PPC64_DTPREL16_HI: | |
10922 | case R_PPC64_DTPREL16_HA: | |
10923 | case R_PPC64_DTPREL16_DS: | |
10924 | case R_PPC64_DTPREL16_LO_DS: | |
10925 | case R_PPC64_DTPREL16_HIGHER: | |
10926 | case R_PPC64_DTPREL16_HIGHERA: | |
10927 | case R_PPC64_DTPREL16_HIGHEST: | |
10928 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10929 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10930 | break; |
10931 | ||
e515b051 AM |
10932 | case R_PPC64_DTPMOD64: |
10933 | relocation = 1; | |
10934 | addend = 0; | |
10935 | goto dodyn; | |
10936 | ||
411e1bfb | 10937 | case R_PPC64_TPREL64: |
e1918d23 | 10938 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10939 | goto dodyn; |
10940 | ||
10941 | case R_PPC64_DTPREL64: | |
e1918d23 | 10942 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10943 | /* Fall thru */ |
10944 | ||
65f38f15 AM |
10945 | /* Relocations that may need to be propagated if this is a |
10946 | dynamic object. */ | |
04c9666a | 10947 | case R_PPC64_REL30: |
65f38f15 AM |
10948 | case R_PPC64_REL32: |
10949 | case R_PPC64_REL64: | |
10950 | case R_PPC64_ADDR14: | |
10951 | case R_PPC64_ADDR14_BRNTAKEN: | |
10952 | case R_PPC64_ADDR14_BRTAKEN: | |
10953 | case R_PPC64_ADDR16: | |
10954 | case R_PPC64_ADDR16_DS: | |
10955 | case R_PPC64_ADDR16_HA: | |
10956 | case R_PPC64_ADDR16_HI: | |
10957 | case R_PPC64_ADDR16_HIGHER: | |
10958 | case R_PPC64_ADDR16_HIGHERA: | |
10959 | case R_PPC64_ADDR16_HIGHEST: | |
10960 | case R_PPC64_ADDR16_HIGHESTA: | |
10961 | case R_PPC64_ADDR16_LO: | |
10962 | case R_PPC64_ADDR16_LO_DS: | |
10963 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10964 | case R_PPC64_ADDR32: |
10965 | case R_PPC64_ADDR64: | |
10966 | case R_PPC64_UADDR16: | |
10967 | case R_PPC64_UADDR32: | |
10968 | case R_PPC64_UADDR64: | |
411e1bfb | 10969 | dodyn: |
5d1634d7 | 10970 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10971 | break; |
10972 | ||
41bd81ab AM |
10973 | if (NO_OPD_RELOCS && is_opd) |
10974 | break; | |
10975 | ||
65f38f15 | 10976 | if ((info->shared |
4e795f50 | 10977 | && (h == NULL |
039b3fef AM |
10978 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10979 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10980 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10981 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10982 | || (ELIMINATE_COPY_RELOCS |
10983 | && !info->shared | |
65f38f15 | 10984 | && h != NULL |
039b3fef | 10985 | && h->elf.dynindx != -1 |
f5385ebf AM |
10986 | && !h->elf.non_got_ref |
10987 | && h->elf.def_dynamic | |
10988 | && !h->elf.def_regular)) | |
65f38f15 AM |
10989 | { |
10990 | Elf_Internal_Rela outrel; | |
b34976b6 | 10991 | bfd_boolean skip, relocate; |
65f38f15 | 10992 | asection *sreloc; |
947216bf | 10993 | bfd_byte *loc; |
1cf1f670 | 10994 | bfd_vma out_off; |
65f38f15 AM |
10995 | |
10996 | /* When generating a dynamic object, these relocations | |
10997 | are copied into the output file to be resolved at run | |
10998 | time. */ | |
10999 | ||
b34976b6 AM |
11000 | skip = FALSE; |
11001 | relocate = FALSE; | |
65f38f15 | 11002 | |
1cf1f670 AM |
11003 | out_off = _bfd_elf_section_offset (output_bfd, info, |
11004 | input_section, rel->r_offset); | |
11005 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 11006 | skip = TRUE; |
1cf1f670 | 11007 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 11008 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
11009 | out_off += (input_section->output_section->vma |
11010 | + input_section->output_offset); | |
11011 | outrel.r_offset = out_off; | |
411e1bfb | 11012 | outrel.r_addend = rel->r_addend; |
65f38f15 | 11013 | |
1cf1f670 AM |
11014 | /* Optimize unaligned reloc use. */ |
11015 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
11016 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
11017 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
11018 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
11019 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
11020 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
11021 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
11022 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
11023 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
11024 | ||
65f38f15 | 11025 | if (skip) |
0bb2d96a | 11026 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 11027 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
11028 | && !is_opd |
11029 | && r_type != R_PPC64_TOC) | |
039b3fef | 11030 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
11031 | else |
11032 | { | |
41bd81ab AM |
11033 | /* This symbol is local, or marked to become local, |
11034 | or this is an opd section reloc which must point | |
11035 | at a local function. */ | |
65f38f15 | 11036 | outrel.r_addend += relocation; |
e86ce104 | 11037 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 11038 | { |
3fad3c7c | 11039 | if (is_opd && h != NULL) |
afbe61cf AM |
11040 | { |
11041 | /* Lie about opd entries. This case occurs | |
11042 | when building shared libraries and we | |
11043 | reference a function in another shared | |
3fad3c7c AM |
11044 | lib. The same thing happens for a weak |
11045 | definition in an application that's | |
11046 | overridden by a strong definition in a | |
11047 | shared lib. (I believe this is a generic | |
11048 | bug in binutils handling of weak syms.) | |
11049 | In these cases we won't use the opd | |
1e2f5b6e | 11050 | entry in this lib. */ |
b34976b6 | 11051 | unresolved_reloc = FALSE; |
afbe61cf | 11052 | } |
65f38f15 | 11053 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
11054 | |
11055 | /* We need to relocate .opd contents for ld.so. | |
11056 | Prelink also wants simple and consistent rules | |
11057 | for relocs. This make all RELATIVE relocs have | |
11058 | *r_offset equal to r_addend. */ | |
11059 | relocate = TRUE; | |
65f38f15 AM |
11060 | } |
11061 | else | |
11062 | { | |
11063 | long indx = 0; | |
11064 | ||
41bd81ab | 11065 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
11066 | ; |
11067 | else if (sec == NULL || sec->owner == NULL) | |
11068 | { | |
11069 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 11070 | return FALSE; |
65f38f15 AM |
11071 | } |
11072 | else | |
11073 | { | |
11074 | asection *osec; | |
11075 | ||
11076 | osec = sec->output_section; | |
11077 | indx = elf_section_data (osec)->dynindx; | |
11078 | ||
74541ad4 AM |
11079 | if (indx == 0) |
11080 | { | |
11081 | if ((osec->flags & SEC_READONLY) == 0 | |
11082 | && htab->elf.data_index_section != NULL) | |
11083 | osec = htab->elf.data_index_section; | |
11084 | else | |
11085 | osec = htab->elf.text_index_section; | |
11086 | indx = elf_section_data (osec)->dynindx; | |
11087 | } | |
11088 | BFD_ASSERT (indx != 0); | |
11089 | ||
65f38f15 AM |
11090 | /* We are turning this relocation into one |
11091 | against a section symbol, so subtract out | |
11092 | the output section's address but not the | |
11093 | offset of the input section in the output | |
11094 | section. */ | |
11095 | outrel.r_addend -= osec->vma; | |
11096 | } | |
11097 | ||
11098 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
11099 | } | |
11100 | } | |
11101 | ||
11102 | sreloc = elf_section_data (input_section)->sreloc; | |
11103 | if (sreloc == NULL) | |
11104 | abort (); | |
11105 | ||
dfbb6ac9 AM |
11106 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
11107 | >= sreloc->size) | |
11108 | abort (); | |
947216bf AM |
11109 | loc = sreloc->contents; |
11110 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
11111 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
11112 | ||
11113 | /* If this reloc is against an external symbol, it will | |
11114 | be computed at runtime, so there's no need to do | |
81407a69 AM |
11115 | anything now. However, for the sake of prelink ensure |
11116 | that the section contents are a known value. */ | |
65f38f15 | 11117 | if (! relocate) |
81407a69 AM |
11118 | { |
11119 | unresolved_reloc = FALSE; | |
11120 | /* The value chosen here is quite arbitrary as ld.so | |
11121 | ignores section contents except for the special | |
11122 | case of .opd where the contents might be accessed | |
11123 | before relocation. Choose zero, as that won't | |
11124 | cause reloc overflow. */ | |
11125 | relocation = 0; | |
11126 | addend = 0; | |
11127 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11128 | to improve backward compatibility with older | |
11129 | versions of ld. */ | |
11130 | if (r_type == R_PPC64_ADDR64) | |
11131 | addend = outrel.r_addend; | |
11132 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11133 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11134 | addend = (input_section->output_section->vma |
11135 | + input_section->output_offset | |
11136 | + rel->r_offset); | |
81407a69 | 11137 | } |
65f38f15 | 11138 | } |
5bd4f169 AM |
11139 | break; |
11140 | ||
65f38f15 AM |
11141 | case R_PPC64_COPY: |
11142 | case R_PPC64_GLOB_DAT: | |
11143 | case R_PPC64_JMP_SLOT: | |
11144 | case R_PPC64_RELATIVE: | |
11145 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11146 | files. */ | |
ae9a127f | 11147 | /* Fall through. */ |
65f38f15 AM |
11148 | |
11149 | case R_PPC64_PLTGOT16: | |
11150 | case R_PPC64_PLTGOT16_DS: | |
11151 | case R_PPC64_PLTGOT16_HA: | |
11152 | case R_PPC64_PLTGOT16_HI: | |
11153 | case R_PPC64_PLTGOT16_LO: | |
11154 | case R_PPC64_PLTGOT16_LO_DS: | |
11155 | case R_PPC64_PLTREL32: | |
11156 | case R_PPC64_PLTREL64: | |
11157 | /* These ones haven't been implemented yet. */ | |
11158 | ||
11159 | (*_bfd_error_handler) | |
d003868e AM |
11160 | (_("%B: relocation %s is not supported for symbol %s."), |
11161 | input_bfd, | |
4ce794b7 | 11162 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11163 | |
11164 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11165 | ret = FALSE; |
5bd4f169 | 11166 | continue; |
65f38f15 | 11167 | } |
5bd4f169 | 11168 | |
65f38f15 AM |
11169 | /* Do any further special processing. */ |
11170 | switch (r_type) | |
11171 | { | |
11172 | default: | |
11173 | break; | |
11174 | ||
11175 | case R_PPC64_ADDR16_HA: | |
11176 | case R_PPC64_ADDR16_HIGHERA: | |
11177 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11178 | case R_PPC64_TOC16_HA: |
11179 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11180 | case R_PPC64_TPREL16_HA: |
11181 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11182 | case R_PPC64_TPREL16_HIGHER: |
11183 | case R_PPC64_TPREL16_HIGHERA: | |
11184 | case R_PPC64_TPREL16_HIGHEST: | |
11185 | case R_PPC64_TPREL16_HIGHESTA: | |
11186 | case R_PPC64_DTPREL16_HIGHER: | |
11187 | case R_PPC64_DTPREL16_HIGHERA: | |
11188 | case R_PPC64_DTPREL16_HIGHEST: | |
11189 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11190 | /* It's just possible that this symbol is a weak symbol |
11191 | that's not actually defined anywhere. In that case, | |
11192 | 'sec' would be NULL, and we should leave the symbol | |
11193 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11194 | if (sec == NULL) |
11195 | break; | |
11196 | /* Fall thru */ | |
11197 | ||
11198 | case R_PPC64_GOT16_HA: | |
11199 | case R_PPC64_PLTGOT16_HA: | |
11200 | case R_PPC64_PLT16_HA: | |
11201 | case R_PPC64_GOT_TLSGD16_HA: | |
11202 | case R_PPC64_GOT_TLSLD16_HA: | |
11203 | case R_PPC64_GOT_TPREL16_HA: | |
11204 | case R_PPC64_GOT_DTPREL16_HA: | |
11205 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11206 | Bits 0:15 are not used. */ | |
11207 | addend += 0x8000; | |
65f38f15 AM |
11208 | break; |
11209 | ||
11210 | case R_PPC64_ADDR16_DS: | |
11211 | case R_PPC64_ADDR16_LO_DS: | |
11212 | case R_PPC64_GOT16_DS: | |
11213 | case R_PPC64_GOT16_LO_DS: | |
11214 | case R_PPC64_PLT16_LO_DS: | |
11215 | case R_PPC64_SECTOFF_DS: | |
11216 | case R_PPC64_SECTOFF_LO_DS: | |
11217 | case R_PPC64_TOC16_DS: | |
11218 | case R_PPC64_TOC16_LO_DS: | |
11219 | case R_PPC64_PLTGOT16_DS: | |
11220 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11221 | case R_PPC64_GOT_TPREL16_DS: |
11222 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11223 | case R_PPC64_GOT_DTPREL16_DS: | |
11224 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11225 | case R_PPC64_TPREL16_DS: | |
11226 | case R_PPC64_TPREL16_LO_DS: | |
11227 | case R_PPC64_DTPREL16_DS: | |
11228 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11229 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11230 | mask = 3; | |
11231 | /* If this reloc is against an lq insn, then the value must be | |
11232 | a multiple of 16. This is somewhat of a hack, but the | |
11233 | "correct" way to do this by defining _DQ forms of all the | |
11234 | _DS relocs bloats all reloc switches in this file. It | |
11235 | doesn't seem to make much sense to use any of these relocs | |
11236 | in data, so testing the insn should be safe. */ | |
494dac0c | 11237 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11238 | mask = 15; |
11239 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11240 | { |
11241 | (*_bfd_error_handler) | |
d003868e AM |
11242 | (_("%B: error: relocation %s not a multiple of %d"), |
11243 | input_bfd, | |
4ce794b7 | 11244 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11245 | mask + 1); |
65f38f15 | 11246 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11247 | ret = FALSE; |
65f38f15 AM |
11248 | continue; |
11249 | } | |
11250 | break; | |
5bd4f169 AM |
11251 | } |
11252 | ||
239e1f3a AM |
11253 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11254 | because such sections are not SEC_ALLOC and thus ld.so will | |
11255 | not process them. */ | |
65f38f15 | 11256 | if (unresolved_reloc |
239e1f3a | 11257 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11258 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11259 | { |
11260 | (*_bfd_error_handler) | |
d003868e AM |
11261 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11262 | input_bfd, | |
11263 | input_section, | |
9c07fe7c | 11264 | (long) rel->r_offset, |
7b609f53 | 11265 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11266 | h->elf.root.root.string); |
b34976b6 | 11267 | ret = FALSE; |
9c07fe7c | 11268 | } |
5bd4f169 | 11269 | |
65f38f15 | 11270 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11271 | input_bfd, |
11272 | input_section, | |
11273 | contents, | |
411e1bfb | 11274 | rel->r_offset, |
5bd4f169 AM |
11275 | relocation, |
11276 | addend); | |
11277 | ||
ef60b7ff | 11278 | if (r != bfd_reloc_ok) |
5bd4f169 | 11279 | { |
cd27b276 AM |
11280 | if (sym_name == NULL) |
11281 | sym_name = "(null)"; | |
11282 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11283 | { |
cd27b276 AM |
11284 | if (warned) |
11285 | continue; | |
11286 | if (h != NULL | |
039b3fef | 11287 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11288 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11289 | { |
11290 | /* Assume this is a call protected by other code that | |
11291 | detects the symbol is undefined. If this is the case, | |
11292 | we can safely ignore the overflow. If not, the | |
11293 | program is hosed anyway, and a little warning isn't | |
11294 | going to help. */ | |
11295 | ||
11296 | continue; | |
11297 | } | |
11298 | ||
ef60b7ff | 11299 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11300 | (info, (h ? &h->elf.root : NULL), sym_name, |
11301 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11302 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11303 | return FALSE; |
ef60b7ff AM |
11304 | } |
11305 | else | |
11306 | { | |
11307 | (*_bfd_error_handler) | |
d003868e AM |
11308 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11309 | input_bfd, | |
11310 | input_section, | |
7b609f53 | 11311 | (long) rel->r_offset, |
4ce794b7 | 11312 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11313 | sym_name, |
11314 | (int) r); | |
b34976b6 | 11315 | ret = FALSE; |
ef60b7ff | 11316 | } |
5bd4f169 | 11317 | } |
5bd4f169 AM |
11318 | } |
11319 | ||
645ea6a9 AM |
11320 | /* If we're emitting relocations, then shortly after this function |
11321 | returns, reloc offsets and addends for this section will be | |
11322 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11323 | file rather than the input. Save a copy of the relocs for |
11324 | opd_entry_value. */ | |
4cc603a5 | 11325 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11326 | { |
11327 | bfd_size_type amt; | |
11328 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11329 | rel = bfd_alloc (input_bfd, amt); | |
11330 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11331 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11332 | if (rel == NULL) | |
11333 | return FALSE; | |
11334 | memcpy (rel, relocs, amt); | |
11335 | } | |
5bd4f169 AM |
11336 | return ret; |
11337 | } | |
11338 | ||
754021d0 AM |
11339 | /* Adjust the value of any local symbols in opd sections. */ |
11340 | ||
11341 | static bfd_boolean | |
11342 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11343 | const char *name ATTRIBUTE_UNUSED, | |
11344 | Elf_Internal_Sym *elfsym, | |
11345 | asection *input_sec, | |
11346 | struct elf_link_hash_entry *h) | |
11347 | { | |
74f0fb50 AM |
11348 | struct _opd_sec_data *opd; |
11349 | long adjust; | |
754021d0 AM |
11350 | bfd_vma value; |
11351 | ||
4025353c AM |
11352 | if (h != NULL) |
11353 | return TRUE; | |
11354 | ||
74f0fb50 AM |
11355 | opd = get_opd_info (input_sec); |
11356 | if (opd == NULL || opd->adjust == NULL) | |
754021d0 AM |
11357 | return TRUE; |
11358 | ||
11359 | value = elfsym->st_value - input_sec->output_offset; | |
11360 | if (!info->relocatable) | |
11361 | value -= input_sec->output_section->vma; | |
11362 | ||
74f0fb50 | 11363 | adjust = opd->adjust[value / 8]; |
4025353c AM |
11364 | if (adjust == -1) |
11365 | elfsym->st_value = 0; | |
11366 | else | |
11367 | elfsym->st_value += adjust; | |
754021d0 AM |
11368 | return TRUE; |
11369 | } | |
11370 | ||
5bd4f169 AM |
11371 | /* Finish up dynamic symbol handling. We set the contents of various |
11372 | dynamic sections here. */ | |
11373 | ||
b34976b6 | 11374 | static bfd_boolean |
4ce794b7 AM |
11375 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11376 | struct bfd_link_info *info, | |
11377 | struct elf_link_hash_entry *h, | |
11378 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11379 | { |
65f38f15 | 11380 | struct ppc_link_hash_table *htab; |
8387904d AM |
11381 | struct plt_entry *ent; |
11382 | Elf_Internal_Rela rela; | |
11383 | bfd_byte *loc; | |
5bd4f169 | 11384 | |
65f38f15 | 11385 | htab = ppc_hash_table (info); |
5bd4f169 | 11386 | |
8387904d AM |
11387 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11388 | if (ent->plt.offset != (bfd_vma) -1) | |
11389 | { | |
11390 | /* This symbol has an entry in the procedure linkage | |
11391 | table. Set it up. */ | |
11392 | ||
11393 | if (htab->plt == NULL | |
11394 | || htab->relplt == NULL | |
11395 | || htab->glink == NULL) | |
11396 | abort (); | |
11397 | ||
11398 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11399 | fill in the PLT entry. */ | |
11400 | rela.r_offset = (htab->plt->output_section->vma | |
11401 | + htab->plt->output_offset | |
11402 | + ent->plt.offset); | |
11403 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11404 | rela.r_addend = ent->addend; | |
11405 | ||
11406 | loc = htab->relplt->contents; | |
11407 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11408 | * sizeof (Elf64_External_Rela)); | |
11409 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11410 | } | |
5bd4f169 | 11411 | |
f5385ebf | 11412 | if (h->needs_copy) |
5bd4f169 | 11413 | { |
5bd4f169 | 11414 | Elf_Internal_Rela rela; |
947216bf | 11415 | bfd_byte *loc; |
5bd4f169 | 11416 | |
65f38f15 | 11417 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11418 | |
65f38f15 AM |
11419 | if (h->dynindx == -1 |
11420 | || (h->root.type != bfd_link_hash_defined | |
11421 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11422 | || htab->relbss == NULL) |
65f38f15 | 11423 | abort (); |
5bd4f169 AM |
11424 | |
11425 | rela.r_offset = (h->root.u.def.value | |
11426 | + h->root.u.def.section->output_section->vma | |
11427 | + h->root.u.def.section->output_offset); | |
11428 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11429 | rela.r_addend = 0; | |
4ce794b7 AM |
11430 | loc = htab->relbss->contents; |
11431 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11432 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11433 | } |
11434 | ||
5bd4f169 AM |
11435 | /* Mark some specially defined symbols as absolute. */ |
11436 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11437 | sym->st_shndx = SHN_ABS; | |
11438 | ||
b34976b6 | 11439 | return TRUE; |
5bd4f169 AM |
11440 | } |
11441 | ||
65f38f15 AM |
11442 | /* Used to decide how to sort relocs in an optimal manner for the |
11443 | dynamic linker, before writing them out. */ | |
11444 | ||
11445 | static enum elf_reloc_type_class | |
4ce794b7 | 11446 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11447 | { |
04c9666a | 11448 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11449 | |
4ce794b7 | 11450 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11451 | switch (r_type) |
65f38f15 AM |
11452 | { |
11453 | case R_PPC64_RELATIVE: | |
11454 | return reloc_class_relative; | |
11455 | case R_PPC64_JMP_SLOT: | |
11456 | return reloc_class_plt; | |
11457 | case R_PPC64_COPY: | |
11458 | return reloc_class_copy; | |
11459 | default: | |
11460 | return reloc_class_normal; | |
11461 | } | |
11462 | } | |
11463 | ||
5bd4f169 AM |
11464 | /* Finish up the dynamic sections. */ |
11465 | ||
b34976b6 | 11466 | static bfd_boolean |
4ce794b7 AM |
11467 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11468 | struct bfd_link_info *info) | |
5bd4f169 | 11469 | { |
65f38f15 AM |
11470 | struct ppc_link_hash_table *htab; |
11471 | bfd *dynobj; | |
5bd4f169 | 11472 | asection *sdyn; |
5bd4f169 | 11473 | |
65f38f15 AM |
11474 | htab = ppc_hash_table (info); |
11475 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11476 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11477 | ||
65f38f15 | 11478 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11479 | { |
5bd4f169 AM |
11480 | Elf64_External_Dyn *dyncon, *dynconend; |
11481 | ||
4ce794b7 | 11482 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11483 | abort (); |
5bd4f169 AM |
11484 | |
11485 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11486 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11487 | for (; dyncon < dynconend; dyncon++) |
11488 | { | |
11489 | Elf_Internal_Dyn dyn; | |
19397422 | 11490 | asection *s; |
5bd4f169 AM |
11491 | |
11492 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11493 | ||
11494 | switch (dyn.d_tag) | |
11495 | { | |
65f38f15 AM |
11496 | default: |
11497 | continue; | |
5bd4f169 | 11498 | |
5d1634d7 | 11499 | case DT_PPC64_GLINK: |
4ce794b7 | 11500 | s = htab->glink; |
6348e046 | 11501 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11502 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11503 | of glink rather than the first entry point, which is | |
11504 | what ld.so needs, and now have a bigger stub to | |
11505 | support automatic multiple TOCs. */ | |
11506 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11507 | break; |
11508 | ||
19397422 AM |
11509 | case DT_PPC64_OPD: |
11510 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11511 | if (s == NULL) |
11512 | continue; | |
11513 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11514 | break; |
11515 | ||
11516 | case DT_PPC64_OPDSZ: | |
11517 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11518 | if (s == NULL) |
11519 | continue; | |
eea6121a | 11520 | dyn.d_un.d_val = s->size; |
19397422 AM |
11521 | break; |
11522 | ||
65f38f15 | 11523 | case DT_PLTGOT: |
4ce794b7 | 11524 | s = htab->plt; |
6348e046 | 11525 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11526 | break; |
11527 | ||
11528 | case DT_JMPREL: | |
4ce794b7 | 11529 | s = htab->relplt; |
6348e046 | 11530 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11531 | break; |
5bd4f169 | 11532 | |
65f38f15 | 11533 | case DT_PLTRELSZ: |
eea6121a | 11534 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11535 | break; |
11536 | ||
11537 | case DT_RELASZ: | |
11538 | /* Don't count procedure linkage table relocs in the | |
11539 | overall reloc count. */ | |
4ce794b7 | 11540 | s = htab->relplt; |
6348e046 AM |
11541 | if (s == NULL) |
11542 | continue; | |
eea6121a | 11543 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11544 | break; |
11545 | ||
11546 | case DT_RELA: | |
11547 | /* We may not be using the standard ELF linker script. | |
11548 | If .rela.plt is the first .rela section, we adjust | |
11549 | DT_RELA to not include it. */ | |
4ce794b7 | 11550 | s = htab->relplt; |
6348e046 AM |
11551 | if (s == NULL) |
11552 | continue; | |
11553 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11554 | continue; | |
eea6121a | 11555 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11556 | break; |
5bd4f169 | 11557 | } |
5bd4f169 | 11558 | |
65f38f15 | 11559 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11560 | } |
5bd4f169 AM |
11561 | } |
11562 | ||
eea6121a | 11563 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11564 | { |
11565 | /* Fill in the first entry in the global offset table. | |
11566 | We use it to hold the link-time TOCbase. */ | |
11567 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11568 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11569 | htab->got->contents); |
5d1634d7 AM |
11570 | |
11571 | /* Set .got entry size. */ | |
4ce794b7 | 11572 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11573 | } |
11574 | ||
eea6121a | 11575 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11576 | { |
11577 | /* Set .plt entry size. */ | |
4ce794b7 | 11578 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11579 | = PLT_ENTRY_SIZE; |
11580 | } | |
11581 | ||
84f5d08e AM |
11582 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
11583 | brlt ourselves if emitrelocations. */ | |
11584 | if (htab->brlt != NULL | |
11585 | && htab->brlt->reloc_count != 0 | |
11586 | && !_bfd_elf_link_output_relocs (output_bfd, | |
11587 | htab->brlt, | |
11588 | &elf_section_data (htab->brlt)->rel_hdr, | |
11589 | elf_section_data (htab->brlt)->relocs, | |
11590 | NULL)) | |
11591 | return FALSE; | |
11592 | ||
e717da7e | 11593 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11594 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11595 | bfd. */ | |
e717da7e AM |
11596 | while ((dynobj = dynobj->link_next) != NULL) |
11597 | { | |
11598 | asection *s; | |
7b53ace3 | 11599 | |
ee75fd95 | 11600 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11601 | continue; |
11602 | ||
e717da7e AM |
11603 | s = ppc64_elf_tdata (dynobj)->got; |
11604 | if (s != NULL | |
eea6121a | 11605 | && s->size != 0 |
e717da7e AM |
11606 | && s->output_section != bfd_abs_section_ptr |
11607 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11608 | s->contents, s->output_offset, | |
eea6121a | 11609 | s->size)) |
e717da7e AM |
11610 | return FALSE; |
11611 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11612 | if (s != NULL | |
eea6121a | 11613 | && s->size != 0 |
e717da7e AM |
11614 | && s->output_section != bfd_abs_section_ptr |
11615 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11616 | s->contents, s->output_offset, | |
eea6121a | 11617 | s->size)) |
e717da7e AM |
11618 | return FALSE; |
11619 | } | |
f6c52c13 | 11620 | |
b34976b6 | 11621 | return TRUE; |
5bd4f169 AM |
11622 | } |
11623 | ||
5bd4f169 | 11624 | #include "elf64-target.h" |