Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3a71aa26 AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
3 | 2009 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 |
7d9616d7 | 95 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
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 |
e054468f | 115 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
ad8e1ba5 | 116 | |
5bd4f169 AM |
117 | /* The name of the dynamic interpreter. This is put in the .interp |
118 | section. */ | |
119 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
120 | ||
121 | /* The size in bytes of an entry in the procedure linkage table. */ | |
122 | #define PLT_ENTRY_SIZE 24 | |
123 | ||
124 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 125 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
126 | |
127 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
128 | #define TOC_BASE_OFF 0x8000 |
129 | ||
130 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
131 | #define TP_OFFSET 0x7000 | |
132 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 133 | |
ad8e1ba5 AM |
134 | /* .plt call stub instructions. The normal stub is like this, but |
135 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 136 | insert an addi to adjust r12. */ |
ad8e1ba5 | 137 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
138 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
139 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
140 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 141 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 142 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
143 | /* ld %r11,xxx+16@l(%r12) */ |
144 | #define BCTR 0x4e800420 /* bctr */ | |
145 | ||
5d1634d7 | 146 | |
ee4bf8d2 | 147 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 148 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
149 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
150 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
151 | ||
ac2df442 AM |
152 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
153 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
154 | ||
ad8e1ba5 AM |
155 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
156 | ||
ee4bf8d2 | 157 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 158 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
159 | /* 0: */ |
160 | /* .quad plt0-1f */ | |
161 | /* __glink: */ | |
162 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
163 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
164 | /* 1: */ | |
165 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
166 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
167 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
168 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
169 | /* ld %11,0(%12) */ | |
170 | /* ld %2,8(%12) */ | |
171 | /* mtctr %11 */ | |
172 | /* ld %11,16(%12) */ | |
173 | /* bctr */ | |
5d1634d7 AM |
174 | |
175 | /* Pad with this. */ | |
176 | #define NOP 0x60000000 | |
177 | ||
721956f4 AM |
178 | /* Some other nops. */ |
179 | #define CROR_151515 0x4def7b82 | |
180 | #define CROR_313131 0x4ffffb82 | |
181 | ||
cedb70c5 | 182 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
183 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
184 | #define B_DOT 0x48000000 /* b . */ | |
185 | ||
186 | /* After that, we need two instructions to load the index, followed by | |
187 | a branch. */ | |
188 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 189 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 190 | |
deb0e272 AM |
191 | /* Instructions used by the save and restore reg functions. */ |
192 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
193 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
194 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
195 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
196 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
197 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
198 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
199 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
200 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
201 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
202 | #define BLR 0x4e800020 /* blr */ |
203 | ||
41bd81ab AM |
204 | /* Since .opd is an array of descriptors and each entry will end up |
205 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
206 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 207 | relocate .opd without reloc entries. */ |
41bd81ab AM |
208 | #ifndef NO_OPD_RELOCS |
209 | #define NO_OPD_RELOCS 0 | |
210 | #endif | |
5bd4f169 | 211 | \f |
f5e87a1d | 212 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 213 | |
5bd4f169 | 214 | /* Relocation HOWTO's. */ |
04c9666a | 215 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
216 | |
217 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
218 | /* This reloc does nothing. */ | |
219 | HOWTO (R_PPC64_NONE, /* type */ | |
220 | 0, /* rightshift */ | |
411e1bfb AM |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
222 | 32, /* bitsize */ | |
b34976b6 | 223 | FALSE, /* pc_relative */ |
5bd4f169 | 224 | 0, /* bitpos */ |
f5e87a1d | 225 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
226 | bfd_elf_generic_reloc, /* special_function */ |
227 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 228 | FALSE, /* partial_inplace */ |
d006db6c | 229 | 0, /* src_mask */ |
5bd4f169 | 230 | 0, /* dst_mask */ |
b34976b6 | 231 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
232 | |
233 | /* A standard 32 bit relocation. */ | |
234 | HOWTO (R_PPC64_ADDR32, /* type */ | |
235 | 0, /* rightshift */ | |
236 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
237 | 32, /* bitsize */ | |
b34976b6 | 238 | FALSE, /* pc_relative */ |
5bd4f169 AM |
239 | 0, /* bitpos */ |
240 | complain_overflow_bitfield, /* complain_on_overflow */ | |
241 | bfd_elf_generic_reloc, /* special_function */ | |
242 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 243 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
244 | 0, /* src_mask */ |
245 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 246 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
247 | |
248 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
249 | FIXME: we don't check that, we just clear them. */ | |
250 | HOWTO (R_PPC64_ADDR24, /* type */ | |
251 | 0, /* rightshift */ | |
252 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
253 | 26, /* bitsize */ | |
b34976b6 | 254 | FALSE, /* pc_relative */ |
5bd4f169 AM |
255 | 0, /* bitpos */ |
256 | complain_overflow_bitfield, /* complain_on_overflow */ | |
257 | bfd_elf_generic_reloc, /* special_function */ | |
258 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 259 | FALSE, /* partial_inplace */ |
d006db6c | 260 | 0, /* src_mask */ |
f5e87a1d | 261 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 262 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
263 | |
264 | /* A standard 16 bit relocation. */ | |
265 | HOWTO (R_PPC64_ADDR16, /* type */ | |
266 | 0, /* rightshift */ | |
267 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 16, /* bitsize */ | |
b34976b6 | 269 | FALSE, /* pc_relative */ |
5bd4f169 AM |
270 | 0, /* bitpos */ |
271 | complain_overflow_bitfield, /* complain_on_overflow */ | |
272 | bfd_elf_generic_reloc, /* special_function */ | |
273 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 274 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
275 | 0, /* src_mask */ |
276 | 0xffff, /* dst_mask */ | |
b34976b6 | 277 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
278 | |
279 | /* A 16 bit relocation without overflow. */ | |
280 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
281 | 0, /* rightshift */ | |
282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 16, /* bitsize */ | |
b34976b6 | 284 | FALSE, /* pc_relative */ |
5bd4f169 AM |
285 | 0, /* bitpos */ |
286 | complain_overflow_dont,/* complain_on_overflow */ | |
287 | bfd_elf_generic_reloc, /* special_function */ | |
288 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 289 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
290 | 0, /* src_mask */ |
291 | 0xffff, /* dst_mask */ | |
b34976b6 | 292 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
293 | |
294 | /* Bits 16-31 of an address. */ | |
295 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
296 | 16, /* rightshift */ | |
297 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
298 | 16, /* bitsize */ | |
b34976b6 | 299 | FALSE, /* pc_relative */ |
5bd4f169 AM |
300 | 0, /* bitpos */ |
301 | complain_overflow_dont, /* complain_on_overflow */ | |
302 | bfd_elf_generic_reloc, /* special_function */ | |
303 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 304 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
305 | 0, /* src_mask */ |
306 | 0xffff, /* dst_mask */ | |
b34976b6 | 307 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
308 | |
309 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
310 | bits, treated as a signed number, is negative. */ | |
311 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
312 | 16, /* rightshift */ | |
313 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
314 | 16, /* bitsize */ | |
b34976b6 | 315 | FALSE, /* pc_relative */ |
5bd4f169 AM |
316 | 0, /* bitpos */ |
317 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 318 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 319 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 320 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
321 | 0, /* src_mask */ |
322 | 0xffff, /* dst_mask */ | |
b34976b6 | 323 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
324 | |
325 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
326 | FIXME: we don't check that, we just clear them. */ | |
327 | HOWTO (R_PPC64_ADDR14, /* type */ | |
328 | 0, /* rightshift */ | |
329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
330 | 16, /* bitsize */ | |
b34976b6 | 331 | FALSE, /* pc_relative */ |
5bd4f169 AM |
332 | 0, /* bitpos */ |
333 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 334 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 335 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 336 | FALSE, /* partial_inplace */ |
d006db6c | 337 | 0, /* src_mask */ |
f5e87a1d | 338 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 339 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
340 | |
341 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
342 | indicate that the branch is expected to be taken. The lower two | |
343 | bits must be zero. */ | |
344 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
345 | 0, /* rightshift */ | |
346 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
347 | 16, /* bitsize */ | |
b34976b6 | 348 | FALSE, /* pc_relative */ |
5bd4f169 AM |
349 | 0, /* bitpos */ |
350 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 351 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 352 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 353 | FALSE, /* partial_inplace */ |
d006db6c | 354 | 0, /* src_mask */ |
f5e87a1d | 355 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 356 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
357 | |
358 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
359 | indicate that the branch is not expected to be taken. The lower | |
360 | two bits must be zero. */ | |
361 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
362 | 0, /* rightshift */ | |
363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 16, /* bitsize */ | |
b34976b6 | 365 | FALSE, /* pc_relative */ |
5bd4f169 AM |
366 | 0, /* bitpos */ |
367 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 368 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 369 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 370 | FALSE, /* partial_inplace */ |
d006db6c | 371 | 0, /* src_mask */ |
f5e87a1d | 372 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 373 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
374 | |
375 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
376 | HOWTO (R_PPC64_REL24, /* type */ | |
377 | 0, /* rightshift */ | |
378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 26, /* bitsize */ | |
b34976b6 | 380 | TRUE, /* pc_relative */ |
5bd4f169 AM |
381 | 0, /* bitpos */ |
382 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 383 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 384 | "R_PPC64_REL24", /* name */ |
b34976b6 | 385 | FALSE, /* partial_inplace */ |
d006db6c | 386 | 0, /* src_mask */ |
f5e87a1d | 387 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 388 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
389 | |
390 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
391 | HOWTO (R_PPC64_REL14, /* type */ | |
392 | 0, /* rightshift */ | |
393 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
394 | 16, /* bitsize */ | |
b34976b6 | 395 | TRUE, /* pc_relative */ |
5bd4f169 AM |
396 | 0, /* bitpos */ |
397 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 398 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 399 | "R_PPC64_REL14", /* name */ |
b34976b6 | 400 | FALSE, /* partial_inplace */ |
d006db6c | 401 | 0, /* src_mask */ |
f5e87a1d | 402 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 403 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
404 | |
405 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
406 | the branch is expected to be taken. The lower two bits must be | |
407 | zero. */ | |
408 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
411 | 16, /* bitsize */ | |
b34976b6 | 412 | TRUE, /* pc_relative */ |
5bd4f169 AM |
413 | 0, /* bitpos */ |
414 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 415 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 416 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 417 | FALSE, /* partial_inplace */ |
d006db6c | 418 | 0, /* src_mask */ |
f5e87a1d | 419 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 420 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
421 | |
422 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
423 | the branch is not expected to be taken. The lower two bits must | |
424 | be zero. */ | |
425 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
426 | 0, /* rightshift */ | |
427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
428 | 16, /* bitsize */ | |
b34976b6 | 429 | TRUE, /* pc_relative */ |
5bd4f169 AM |
430 | 0, /* bitpos */ |
431 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 432 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 433 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 434 | FALSE, /* partial_inplace */ |
d006db6c | 435 | 0, /* src_mask */ |
f5e87a1d | 436 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 437 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
438 | |
439 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
440 | symbol. */ | |
441 | HOWTO (R_PPC64_GOT16, /* type */ | |
442 | 0, /* rightshift */ | |
443 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
444 | 16, /* bitsize */ | |
b34976b6 | 445 | FALSE, /* pc_relative */ |
5bd4f169 AM |
446 | 0, /* bitpos */ |
447 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 448 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 449 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 450 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
451 | 0, /* src_mask */ |
452 | 0xffff, /* dst_mask */ | |
b34976b6 | 453 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
454 | |
455 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
456 | the symbol. */ | |
457 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
458 | 0, /* rightshift */ | |
459 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 16, /* bitsize */ | |
b34976b6 | 461 | FALSE, /* pc_relative */ |
5bd4f169 AM |
462 | 0, /* bitpos */ |
463 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 464 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 465 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 466 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
467 | 0, /* src_mask */ |
468 | 0xffff, /* dst_mask */ | |
b34976b6 | 469 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
470 | |
471 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
472 | the symbol. */ | |
473 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
474 | 16, /* rightshift */ | |
475 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
476 | 16, /* bitsize */ | |
b34976b6 | 477 | FALSE, /* pc_relative */ |
5bd4f169 AM |
478 | 0, /* bitpos */ |
479 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 480 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 481 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 482 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
483 | 0, /* src_mask */ |
484 | 0xffff, /* dst_mask */ | |
b34976b6 | 485 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
486 | |
487 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
488 | the symbol. */ | |
489 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
490 | 16, /* rightshift */ | |
491 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
492 | 16, /* bitsize */ | |
b34976b6 | 493 | FALSE, /* pc_relative */ |
5bd4f169 AM |
494 | 0, /* bitpos */ |
495 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 496 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 497 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 498 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
499 | 0, /* src_mask */ |
500 | 0xffff, /* dst_mask */ | |
b34976b6 | 501 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
502 | |
503 | /* This is used only by the dynamic linker. The symbol should exist | |
504 | both in the object being run and in some shared library. The | |
505 | dynamic linker copies the data addressed by the symbol from the | |
506 | shared library into the object, because the object being | |
507 | run has to have the data at some particular address. */ | |
508 | HOWTO (R_PPC64_COPY, /* type */ | |
509 | 0, /* rightshift */ | |
f5e87a1d AM |
510 | 0, /* this one is variable size */ |
511 | 0, /* bitsize */ | |
b34976b6 | 512 | FALSE, /* pc_relative */ |
5bd4f169 | 513 | 0, /* bitpos */ |
f5e87a1d AM |
514 | complain_overflow_dont, /* complain_on_overflow */ |
515 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 516 | "R_PPC64_COPY", /* name */ |
b34976b6 | 517 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
518 | 0, /* src_mask */ |
519 | 0, /* dst_mask */ | |
b34976b6 | 520 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
521 | |
522 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
523 | entries. */ | |
524 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
525 | 0, /* rightshift */ | |
526 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
527 | 64, /* bitsize */ | |
b34976b6 | 528 | FALSE, /* pc_relative */ |
5bd4f169 AM |
529 | 0, /* bitpos */ |
530 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 531 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 532 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 533 | FALSE, /* partial_inplace */ |
5bd4f169 | 534 | 0, /* src_mask */ |
f5e87a1d | 535 | ONES (64), /* dst_mask */ |
b34976b6 | 536 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
537 | |
538 | /* Created by the link editor. Marks a procedure linkage table | |
539 | entry for a symbol. */ | |
540 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
541 | 0, /* rightshift */ | |
542 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 0, /* bitsize */ | |
b34976b6 | 544 | FALSE, /* pc_relative */ |
5bd4f169 AM |
545 | 0, /* bitpos */ |
546 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 547 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 548 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 549 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
550 | 0, /* src_mask */ |
551 | 0, /* dst_mask */ | |
b34976b6 | 552 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
553 | |
554 | /* Used only by the dynamic linker. When the object is run, this | |
555 | doubleword64 is set to the load address of the object, plus the | |
556 | addend. */ | |
557 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
558 | 0, /* rightshift */ | |
559 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
560 | 64, /* bitsize */ | |
b34976b6 | 561 | FALSE, /* pc_relative */ |
5bd4f169 AM |
562 | 0, /* bitpos */ |
563 | complain_overflow_dont, /* complain_on_overflow */ | |
564 | bfd_elf_generic_reloc, /* special_function */ | |
565 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 566 | FALSE, /* partial_inplace */ |
5bd4f169 | 567 | 0, /* src_mask */ |
f5e87a1d | 568 | ONES (64), /* dst_mask */ |
b34976b6 | 569 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
570 | |
571 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
572 | HOWTO (R_PPC64_UADDR32, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 32, /* bitsize */ | |
b34976b6 | 576 | FALSE, /* pc_relative */ |
5bd4f169 AM |
577 | 0, /* bitpos */ |
578 | complain_overflow_bitfield, /* complain_on_overflow */ | |
579 | bfd_elf_generic_reloc, /* special_function */ | |
580 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 581 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
582 | 0, /* src_mask */ |
583 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 584 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
585 | |
586 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
587 | HOWTO (R_PPC64_UADDR16, /* type */ | |
588 | 0, /* rightshift */ | |
589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 16, /* bitsize */ | |
b34976b6 | 591 | FALSE, /* pc_relative */ |
5bd4f169 AM |
592 | 0, /* bitpos */ |
593 | complain_overflow_bitfield, /* complain_on_overflow */ | |
594 | bfd_elf_generic_reloc, /* special_function */ | |
595 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 596 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
597 | 0, /* src_mask */ |
598 | 0xffff, /* dst_mask */ | |
b34976b6 | 599 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
600 | |
601 | /* 32-bit PC relative. */ | |
602 | HOWTO (R_PPC64_REL32, /* type */ | |
603 | 0, /* rightshift */ | |
604 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
605 | 32, /* bitsize */ | |
b34976b6 | 606 | TRUE, /* pc_relative */ |
5bd4f169 | 607 | 0, /* bitpos */ |
cedb70c5 | 608 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
609 | complain_overflow_signed, /* complain_on_overflow */ |
610 | bfd_elf_generic_reloc, /* special_function */ | |
611 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 612 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
613 | 0, /* src_mask */ |
614 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 615 | TRUE), /* pcrel_offset */ |
5bd4f169 | 616 | |
10ed1bba | 617 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
618 | HOWTO (R_PPC64_PLT32, /* type */ |
619 | 0, /* rightshift */ | |
620 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
621 | 32, /* bitsize */ | |
b34976b6 | 622 | FALSE, /* pc_relative */ |
5bd4f169 AM |
623 | 0, /* bitpos */ |
624 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 625 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 626 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 627 | FALSE, /* partial_inplace */ |
5bd4f169 | 628 | 0, /* src_mask */ |
f5e87a1d | 629 | 0xffffffff, /* dst_mask */ |
b34976b6 | 630 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
631 | |
632 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
633 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
634 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
635 | 0, /* rightshift */ | |
636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
637 | 32, /* bitsize */ | |
b34976b6 | 638 | TRUE, /* pc_relative */ |
5bd4f169 AM |
639 | 0, /* bitpos */ |
640 | complain_overflow_signed, /* complain_on_overflow */ | |
641 | bfd_elf_generic_reloc, /* special_function */ | |
642 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 643 | FALSE, /* partial_inplace */ |
5bd4f169 | 644 | 0, /* src_mask */ |
f5e87a1d | 645 | 0xffffffff, /* dst_mask */ |
b34976b6 | 646 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
647 | |
648 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
649 | the symbol. */ | |
650 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
651 | 0, /* rightshift */ | |
652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
653 | 16, /* bitsize */ | |
b34976b6 | 654 | FALSE, /* pc_relative */ |
5bd4f169 AM |
655 | 0, /* bitpos */ |
656 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 657 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 658 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 659 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
660 | 0, /* src_mask */ |
661 | 0xffff, /* dst_mask */ | |
b34976b6 | 662 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
663 | |
664 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
665 | the symbol. */ | |
666 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
667 | 16, /* rightshift */ | |
668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
669 | 16, /* bitsize */ | |
b34976b6 | 670 | FALSE, /* pc_relative */ |
5bd4f169 AM |
671 | 0, /* bitpos */ |
672 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 673 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 674 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 675 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
676 | 0, /* src_mask */ |
677 | 0xffff, /* dst_mask */ | |
b34976b6 | 678 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
679 | |
680 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
681 | the symbol. */ | |
682 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
683 | 16, /* rightshift */ | |
684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
685 | 16, /* bitsize */ | |
b34976b6 | 686 | FALSE, /* pc_relative */ |
5bd4f169 AM |
687 | 0, /* bitpos */ |
688 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 689 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 690 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 691 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
692 | 0, /* src_mask */ |
693 | 0xffff, /* dst_mask */ | |
b34976b6 | 694 | FALSE), /* pcrel_offset */ |
5bd4f169 | 695 | |
c061c2d8 | 696 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
697 | HOWTO (R_PPC64_SECTOFF, /* type */ |
698 | 0, /* rightshift */ | |
c061c2d8 AM |
699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
700 | 16, /* bitsize */ | |
b34976b6 | 701 | FALSE, /* pc_relative */ |
5bd4f169 AM |
702 | 0, /* bitpos */ |
703 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 704 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 705 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 706 | FALSE, /* partial_inplace */ |
5bd4f169 | 707 | 0, /* src_mask */ |
c061c2d8 | 708 | 0xffff, /* dst_mask */ |
b34976b6 | 709 | FALSE), /* pcrel_offset */ |
5bd4f169 | 710 | |
c061c2d8 | 711 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
712 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
713 | 0, /* rightshift */ | |
714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
715 | 16, /* bitsize */ | |
b34976b6 | 716 | FALSE, /* pc_relative */ |
5bd4f169 AM |
717 | 0, /* bitpos */ |
718 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 719 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 720 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 721 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
722 | 0, /* src_mask */ |
723 | 0xffff, /* dst_mask */ | |
b34976b6 | 724 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
725 | |
726 | /* 16-bit upper half section relative relocation. */ | |
727 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
728 | 16, /* rightshift */ | |
729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 16, /* bitsize */ | |
b34976b6 | 731 | FALSE, /* pc_relative */ |
5bd4f169 AM |
732 | 0, /* bitpos */ |
733 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 734 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 735 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 736 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
737 | 0, /* src_mask */ |
738 | 0xffff, /* dst_mask */ | |
b34976b6 | 739 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
740 | |
741 | /* 16-bit upper half adjusted section relative relocation. */ | |
742 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
743 | 16, /* rightshift */ | |
744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
745 | 16, /* bitsize */ | |
b34976b6 | 746 | FALSE, /* pc_relative */ |
5bd4f169 AM |
747 | 0, /* bitpos */ |
748 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 749 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 750 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 751 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
752 | 0, /* src_mask */ |
753 | 0xffff, /* dst_mask */ | |
b34976b6 | 754 | FALSE), /* pcrel_offset */ |
5bd4f169 | 755 | |
04c9666a AM |
756 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
757 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
758 | 2, /* rightshift */ |
759 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
760 | 30, /* bitsize */ | |
b34976b6 | 761 | TRUE, /* pc_relative */ |
5bd4f169 AM |
762 | 0, /* bitpos */ |
763 | complain_overflow_dont, /* complain_on_overflow */ | |
764 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 765 | "R_PPC64_REL30", /* name */ |
b34976b6 | 766 | FALSE, /* partial_inplace */ |
d006db6c | 767 | 0, /* src_mask */ |
5bd4f169 | 768 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 769 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
770 | |
771 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
772 | ||
773 | /* A standard 64-bit relocation. */ | |
774 | HOWTO (R_PPC64_ADDR64, /* type */ | |
775 | 0, /* rightshift */ | |
776 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
777 | 64, /* bitsize */ | |
b34976b6 | 778 | FALSE, /* pc_relative */ |
5bd4f169 AM |
779 | 0, /* bitpos */ |
780 | complain_overflow_dont, /* complain_on_overflow */ | |
781 | bfd_elf_generic_reloc, /* special_function */ | |
782 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 783 | FALSE, /* partial_inplace */ |
5bd4f169 | 784 | 0, /* src_mask */ |
f5e87a1d | 785 | ONES (64), /* dst_mask */ |
b34976b6 | 786 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
787 | |
788 | /* The bits 32-47 of an address. */ | |
789 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
790 | 32, /* rightshift */ | |
791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
792 | 16, /* bitsize */ | |
b34976b6 | 793 | FALSE, /* pc_relative */ |
5bd4f169 AM |
794 | 0, /* bitpos */ |
795 | complain_overflow_dont, /* complain_on_overflow */ | |
796 | bfd_elf_generic_reloc, /* special_function */ | |
797 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 798 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
799 | 0, /* src_mask */ |
800 | 0xffff, /* dst_mask */ | |
b34976b6 | 801 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
802 | |
803 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
804 | 16 bits, treated as a signed number, is negative. */ | |
805 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
806 | 32, /* rightshift */ | |
807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
808 | 16, /* bitsize */ | |
b34976b6 | 809 | FALSE, /* pc_relative */ |
5bd4f169 AM |
810 | 0, /* bitpos */ |
811 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 812 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 813 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 814 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
815 | 0, /* src_mask */ |
816 | 0xffff, /* dst_mask */ | |
b34976b6 | 817 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
818 | |
819 | /* The bits 48-63 of an address. */ | |
820 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
821 | 48, /* rightshift */ | |
822 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
823 | 16, /* bitsize */ | |
b34976b6 | 824 | FALSE, /* pc_relative */ |
5bd4f169 AM |
825 | 0, /* bitpos */ |
826 | complain_overflow_dont, /* complain_on_overflow */ | |
827 | bfd_elf_generic_reloc, /* special_function */ | |
828 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 829 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
830 | 0, /* src_mask */ |
831 | 0xffff, /* dst_mask */ | |
b34976b6 | 832 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
833 | |
834 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
835 | 16 bits, treated as a signed number, is negative. */ | |
836 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
837 | 48, /* rightshift */ | |
838 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
839 | 16, /* bitsize */ | |
b34976b6 | 840 | FALSE, /* pc_relative */ |
5bd4f169 AM |
841 | 0, /* bitpos */ |
842 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 843 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 844 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 845 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
846 | 0, /* src_mask */ |
847 | 0xffff, /* dst_mask */ | |
b34976b6 | 848 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
849 | |
850 | /* Like ADDR64, but may be unaligned. */ | |
851 | HOWTO (R_PPC64_UADDR64, /* type */ | |
852 | 0, /* rightshift */ | |
853 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
854 | 64, /* bitsize */ | |
b34976b6 | 855 | FALSE, /* pc_relative */ |
5bd4f169 AM |
856 | 0, /* bitpos */ |
857 | complain_overflow_dont, /* complain_on_overflow */ | |
858 | bfd_elf_generic_reloc, /* special_function */ | |
859 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 860 | FALSE, /* partial_inplace */ |
5bd4f169 | 861 | 0, /* src_mask */ |
f5e87a1d | 862 | ONES (64), /* dst_mask */ |
b34976b6 | 863 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
864 | |
865 | /* 64-bit relative relocation. */ | |
866 | HOWTO (R_PPC64_REL64, /* type */ | |
867 | 0, /* rightshift */ | |
868 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
869 | 64, /* bitsize */ | |
b34976b6 | 870 | TRUE, /* pc_relative */ |
5bd4f169 AM |
871 | 0, /* bitpos */ |
872 | complain_overflow_dont, /* complain_on_overflow */ | |
873 | bfd_elf_generic_reloc, /* special_function */ | |
874 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 875 | FALSE, /* partial_inplace */ |
5bd4f169 | 876 | 0, /* src_mask */ |
f5e87a1d | 877 | ONES (64), /* dst_mask */ |
b34976b6 | 878 | TRUE), /* pcrel_offset */ |
5bd4f169 | 879 | |
cedb70c5 | 880 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
881 | HOWTO (R_PPC64_PLT64, /* type */ |
882 | 0, /* rightshift */ | |
883 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
884 | 64, /* bitsize */ | |
b34976b6 | 885 | FALSE, /* pc_relative */ |
5bd4f169 AM |
886 | 0, /* bitpos */ |
887 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 888 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 889 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 890 | FALSE, /* partial_inplace */ |
5bd4f169 | 891 | 0, /* src_mask */ |
f5e87a1d | 892 | ONES (64), /* dst_mask */ |
b34976b6 | 893 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
894 | |
895 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
896 | table. */ | |
897 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
898 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
899 | 0, /* rightshift */ | |
900 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
901 | 64, /* bitsize */ | |
b34976b6 | 902 | TRUE, /* pc_relative */ |
5bd4f169 AM |
903 | 0, /* bitpos */ |
904 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 905 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 906 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 907 | FALSE, /* partial_inplace */ |
5bd4f169 | 908 | 0, /* src_mask */ |
f5e87a1d | 909 | ONES (64), /* dst_mask */ |
b34976b6 | 910 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
911 | |
912 | /* 16 bit TOC-relative relocation. */ | |
913 | ||
914 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
915 | HOWTO (R_PPC64_TOC16, /* type */ | |
916 | 0, /* rightshift */ | |
917 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
918 | 16, /* bitsize */ | |
b34976b6 | 919 | FALSE, /* pc_relative */ |
5bd4f169 AM |
920 | 0, /* bitpos */ |
921 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 922 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 923 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 924 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
925 | 0, /* src_mask */ |
926 | 0xffff, /* dst_mask */ | |
b34976b6 | 927 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
928 | |
929 | /* 16 bit TOC-relative relocation without overflow. */ | |
930 | ||
931 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
932 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
933 | 0, /* rightshift */ | |
934 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
935 | 16, /* bitsize */ | |
b34976b6 | 936 | FALSE, /* pc_relative */ |
5bd4f169 AM |
937 | 0, /* bitpos */ |
938 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 939 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 940 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 941 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
942 | 0, /* src_mask */ |
943 | 0xffff, /* dst_mask */ | |
b34976b6 | 944 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
945 | |
946 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
947 | ||
948 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
949 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
950 | 16, /* rightshift */ | |
951 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
952 | 16, /* bitsize */ | |
b34976b6 | 953 | FALSE, /* pc_relative */ |
5bd4f169 AM |
954 | 0, /* bitpos */ |
955 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 956 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 957 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 958 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
959 | 0, /* src_mask */ |
960 | 0xffff, /* dst_mask */ | |
b34976b6 | 961 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
962 | |
963 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
964 | contents of the low 16 bits, treated as a signed number, is | |
965 | negative. */ | |
966 | ||
967 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
968 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
969 | 16, /* rightshift */ | |
970 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
971 | 16, /* bitsize */ | |
b34976b6 | 972 | FALSE, /* pc_relative */ |
5bd4f169 AM |
973 | 0, /* bitpos */ |
974 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 975 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 976 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 977 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
978 | 0, /* src_mask */ |
979 | 0xffff, /* dst_mask */ | |
b34976b6 | 980 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
981 | |
982 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
983 | ||
984 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
985 | HOWTO (R_PPC64_TOC, /* type */ | |
986 | 0, /* rightshift */ | |
987 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
988 | 64, /* bitsize */ | |
b34976b6 | 989 | FALSE, /* pc_relative */ |
5bd4f169 AM |
990 | 0, /* bitpos */ |
991 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 992 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 993 | "R_PPC64_TOC", /* name */ |
b34976b6 | 994 | FALSE, /* partial_inplace */ |
5bd4f169 | 995 | 0, /* src_mask */ |
f5e87a1d | 996 | ONES (64), /* dst_mask */ |
b34976b6 | 997 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
998 | |
999 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1000 | value to relocate may (!) refer to a PLT entry which the link | |
1001 | editor (a) may replace with the symbol value. If the link editor | |
1002 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1003 | entry and store the address to the new PLT entry in the GOT. | |
1004 | This permits lazy resolution of function symbols at run time. | |
1005 | The link editor may also skip all of this and just (c) emit a | |
1006 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1007 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1008 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1009 | 0, /* rightshift */ | |
1010 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1011 | 16, /* bitsize */ | |
b34976b6 | 1012 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1013 | 0, /* bitpos */ |
1014 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1015 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1016 | "R_PPC64_PLTGOT16", /* name */ |
1017 | FALSE, /* partial_inplace */ | |
1018 | 0, /* src_mask */ | |
1019 | 0xffff, /* dst_mask */ | |
1020 | FALSE), /* pcrel_offset */ | |
1021 | ||
1022 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1023 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1024 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1025 | 0, /* rightshift */ | |
1026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1027 | 16, /* bitsize */ | |
1028 | FALSE, /* pc_relative */ | |
1029 | 0, /* bitpos */ | |
1030 | complain_overflow_dont, /* complain_on_overflow */ | |
1031 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1032 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1033 | FALSE, /* partial_inplace */ | |
1034 | 0, /* src_mask */ | |
1035 | 0xffff, /* dst_mask */ | |
1036 | FALSE), /* pcrel_offset */ | |
1037 | ||
1038 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1039 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1040 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1041 | 16, /* rightshift */ | |
1042 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1043 | 16, /* bitsize */ | |
1044 | FALSE, /* pc_relative */ | |
1045 | 0, /* bitpos */ | |
1046 | complain_overflow_dont, /* complain_on_overflow */ | |
1047 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1048 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1049 | FALSE, /* partial_inplace */ | |
1050 | 0, /* src_mask */ | |
1051 | 0xffff, /* dst_mask */ | |
1052 | FALSE), /* pcrel_offset */ | |
1053 | ||
1054 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1055 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1056 | is negative. */ | |
1057 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1058 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1059 | 16, /* rightshift */ | |
1060 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 16, /* bitsize */ | |
1062 | FALSE, /* pc_relative */ | |
1063 | 0, /* bitpos */ | |
1064 | complain_overflow_dont,/* complain_on_overflow */ | |
1065 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1066 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1067 | FALSE, /* partial_inplace */ | |
1068 | 0, /* src_mask */ | |
1069 | 0xffff, /* dst_mask */ | |
1070 | FALSE), /* pcrel_offset */ | |
1071 | ||
1072 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1073 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1074 | 0, /* rightshift */ | |
1075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 16, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
1078 | 0, /* bitpos */ | |
1079 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1080 | bfd_elf_generic_reloc, /* special_function */ | |
1081 | "R_PPC64_ADDR16_DS", /* name */ | |
1082 | FALSE, /* partial_inplace */ | |
1083 | 0, /* src_mask */ | |
1084 | 0xfffc, /* dst_mask */ | |
1085 | FALSE), /* pcrel_offset */ | |
1086 | ||
1087 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1088 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1089 | 0, /* rightshift */ | |
1090 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1091 | 16, /* bitsize */ | |
1092 | FALSE, /* pc_relative */ | |
1093 | 0, /* bitpos */ | |
1094 | complain_overflow_dont,/* complain_on_overflow */ | |
1095 | bfd_elf_generic_reloc, /* special_function */ | |
1096 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1097 | FALSE, /* partial_inplace */ | |
1098 | 0, /* src_mask */ | |
1099 | 0xfffc, /* dst_mask */ | |
1100 | FALSE), /* pcrel_offset */ | |
1101 | ||
1102 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1103 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1104 | 0, /* rightshift */ | |
1105 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 16, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
1109 | complain_overflow_signed, /* complain_on_overflow */ | |
1110 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1111 | "R_PPC64_GOT16_DS", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0, /* src_mask */ | |
1114 | 0xfffc, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
1117 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1118 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1119 | 0, /* rightshift */ | |
1120 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 16, /* bitsize */ | |
1122 | FALSE, /* pc_relative */ | |
1123 | 0, /* bitpos */ | |
1124 | complain_overflow_dont, /* complain_on_overflow */ | |
1125 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1126 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0, /* src_mask */ | |
1129 | 0xfffc, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
1132 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1133 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1134 | 0, /* rightshift */ | |
1135 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 16, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_dont, /* complain_on_overflow */ | |
1140 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1141 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0, /* src_mask */ | |
1144 | 0xfffc, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
1146 | ||
1147 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1148 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1149 | 0, /* rightshift */ | |
1150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1151 | 16, /* bitsize */ | |
1152 | FALSE, /* pc_relative */ | |
1153 | 0, /* bitpos */ | |
1154 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1155 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1156 | "R_PPC64_SECTOFF_DS", /* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0, /* src_mask */ | |
1159 | 0xfffc, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
1161 | ||
1162 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1163 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1164 | 0, /* rightshift */ | |
1165 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1166 | 16, /* bitsize */ | |
1167 | FALSE, /* pc_relative */ | |
1168 | 0, /* bitpos */ | |
1169 | complain_overflow_dont, /* complain_on_overflow */ | |
1170 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1171 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0, /* src_mask */ | |
1174 | 0xfffc, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
1176 | ||
1177 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1178 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1179 | 0, /* rightshift */ | |
1180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1181 | 16, /* bitsize */ | |
1182 | FALSE, /* pc_relative */ | |
1183 | 0, /* bitpos */ | |
1184 | complain_overflow_signed, /* complain_on_overflow */ | |
1185 | ppc64_elf_toc_reloc, /* special_function */ | |
1186 | "R_PPC64_TOC16_DS", /* name */ | |
1187 | FALSE, /* partial_inplace */ | |
1188 | 0, /* src_mask */ | |
1189 | 0xfffc, /* dst_mask */ | |
1190 | FALSE), /* pcrel_offset */ | |
1191 | ||
1192 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1193 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1194 | 0, /* rightshift */ | |
1195 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1196 | 16, /* bitsize */ | |
1197 | FALSE, /* pc_relative */ | |
1198 | 0, /* bitpos */ | |
1199 | complain_overflow_dont, /* complain_on_overflow */ | |
1200 | ppc64_elf_toc_reloc, /* special_function */ | |
1201 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1202 | FALSE, /* partial_inplace */ | |
1203 | 0, /* src_mask */ | |
1204 | 0xfffc, /* dst_mask */ | |
1205 | FALSE), /* pcrel_offset */ | |
1206 | ||
1207 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1208 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1209 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1210 | 0, /* rightshift */ |
1211 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1212 | 16, /* bitsize */ | |
1213 | FALSE, /* pc_relative */ | |
1214 | 0, /* bitpos */ | |
1215 | complain_overflow_signed, /* complain_on_overflow */ | |
1216 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1217 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1218 | FALSE, /* partial_inplace */ | |
1219 | 0, /* src_mask */ | |
1220 | 0xfffc, /* dst_mask */ | |
1221 | FALSE), /* pcrel_offset */ | |
1222 | ||
1223 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1224 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1225 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1226 | 0, /* rightshift */ | |
1227 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1228 | 16, /* bitsize */ | |
1229 | FALSE, /* pc_relative */ | |
1230 | 0, /* bitpos */ | |
1231 | complain_overflow_dont, /* complain_on_overflow */ | |
1232 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1233 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1234 | FALSE, /* partial_inplace */ | |
1235 | 0, /* src_mask */ | |
1236 | 0xfffc, /* dst_mask */ | |
1237 | FALSE), /* pcrel_offset */ | |
1238 | ||
727fc41e | 1239 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1240 | HOWTO (R_PPC64_TLS, |
1241 | 0, /* rightshift */ | |
1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1243 | 32, /* bitsize */ | |
1244 | FALSE, /* pc_relative */ | |
1245 | 0, /* bitpos */ | |
1246 | complain_overflow_dont, /* complain_on_overflow */ | |
1247 | bfd_elf_generic_reloc, /* special_function */ | |
1248 | "R_PPC64_TLS", /* name */ | |
1249 | FALSE, /* partial_inplace */ | |
1250 | 0, /* src_mask */ | |
1251 | 0, /* dst_mask */ | |
1252 | FALSE), /* pcrel_offset */ | |
1253 | ||
727fc41e AM |
1254 | HOWTO (R_PPC64_TLSGD, |
1255 | 0, /* rightshift */ | |
1256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 32, /* bitsize */ | |
1258 | FALSE, /* pc_relative */ | |
1259 | 0, /* bitpos */ | |
1260 | complain_overflow_dont, /* complain_on_overflow */ | |
1261 | bfd_elf_generic_reloc, /* special_function */ | |
1262 | "R_PPC64_TLSGD", /* name */ | |
1263 | FALSE, /* partial_inplace */ | |
1264 | 0, /* src_mask */ | |
1265 | 0, /* dst_mask */ | |
1266 | FALSE), /* pcrel_offset */ | |
1267 | ||
1268 | HOWTO (R_PPC64_TLSLD, | |
1269 | 0, /* rightshift */ | |
1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1271 | 32, /* bitsize */ | |
1272 | FALSE, /* pc_relative */ | |
1273 | 0, /* bitpos */ | |
1274 | complain_overflow_dont, /* complain_on_overflow */ | |
1275 | bfd_elf_generic_reloc, /* special_function */ | |
1276 | "R_PPC64_TLSLD", /* name */ | |
1277 | FALSE, /* partial_inplace */ | |
1278 | 0, /* src_mask */ | |
1279 | 0, /* dst_mask */ | |
1280 | FALSE), /* pcrel_offset */ | |
1281 | ||
411e1bfb AM |
1282 | /* Computes the load module index of the load module that contains the |
1283 | definition of its TLS sym. */ | |
1284 | HOWTO (R_PPC64_DTPMOD64, | |
1285 | 0, /* rightshift */ | |
1286 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1287 | 64, /* bitsize */ | |
1288 | FALSE, /* pc_relative */ | |
1289 | 0, /* bitpos */ | |
1290 | complain_overflow_dont, /* complain_on_overflow */ | |
1291 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1292 | "R_PPC64_DTPMOD64", /* name */ | |
1293 | FALSE, /* partial_inplace */ | |
1294 | 0, /* src_mask */ | |
1295 | ONES (64), /* dst_mask */ | |
1296 | FALSE), /* pcrel_offset */ | |
1297 | ||
1298 | /* Computes a dtv-relative displacement, the difference between the value | |
1299 | of sym+add and the base address of the thread-local storage block that | |
1300 | contains the definition of sym, minus 0x8000. */ | |
1301 | HOWTO (R_PPC64_DTPREL64, | |
1302 | 0, /* rightshift */ | |
1303 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1304 | 64, /* bitsize */ | |
1305 | FALSE, /* pc_relative */ | |
1306 | 0, /* bitpos */ | |
1307 | complain_overflow_dont, /* complain_on_overflow */ | |
1308 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1309 | "R_PPC64_DTPREL64", /* name */ | |
1310 | FALSE, /* partial_inplace */ | |
1311 | 0, /* src_mask */ | |
1312 | ONES (64), /* dst_mask */ | |
1313 | FALSE), /* pcrel_offset */ | |
1314 | ||
1315 | /* A 16 bit dtprel reloc. */ | |
1316 | HOWTO (R_PPC64_DTPREL16, | |
1317 | 0, /* rightshift */ | |
1318 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1319 | 16, /* bitsize */ | |
1320 | FALSE, /* pc_relative */ | |
1321 | 0, /* bitpos */ | |
1322 | complain_overflow_signed, /* complain_on_overflow */ | |
1323 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1324 | "R_PPC64_DTPREL16", /* name */ | |
1325 | FALSE, /* partial_inplace */ | |
1326 | 0, /* src_mask */ | |
1327 | 0xffff, /* dst_mask */ | |
1328 | FALSE), /* pcrel_offset */ | |
1329 | ||
1330 | /* Like DTPREL16, but no overflow. */ | |
1331 | HOWTO (R_PPC64_DTPREL16_LO, | |
1332 | 0, /* rightshift */ | |
1333 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1334 | 16, /* bitsize */ | |
1335 | FALSE, /* pc_relative */ | |
1336 | 0, /* bitpos */ | |
1337 | complain_overflow_dont, /* complain_on_overflow */ | |
1338 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1339 | "R_PPC64_DTPREL16_LO", /* name */ | |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0, /* src_mask */ | |
1342 | 0xffff, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
1345 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1346 | HOWTO (R_PPC64_DTPREL16_HI, | |
1347 | 16, /* rightshift */ | |
1348 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1349 | 16, /* bitsize */ | |
1350 | FALSE, /* pc_relative */ | |
1351 | 0, /* bitpos */ | |
1352 | complain_overflow_dont, /* complain_on_overflow */ | |
1353 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1354 | "R_PPC64_DTPREL16_HI", /* name */ | |
1355 | FALSE, /* partial_inplace */ | |
1356 | 0, /* src_mask */ | |
1357 | 0xffff, /* dst_mask */ | |
1358 | FALSE), /* pcrel_offset */ | |
1359 | ||
1360 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1361 | HOWTO (R_PPC64_DTPREL16_HA, | |
1362 | 16, /* rightshift */ | |
1363 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1364 | 16, /* bitsize */ | |
1365 | FALSE, /* pc_relative */ | |
1366 | 0, /* bitpos */ | |
1367 | complain_overflow_dont, /* complain_on_overflow */ | |
1368 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1369 | "R_PPC64_DTPREL16_HA", /* name */ | |
1370 | FALSE, /* partial_inplace */ | |
1371 | 0, /* src_mask */ | |
1372 | 0xffff, /* dst_mask */ | |
1373 | FALSE), /* pcrel_offset */ | |
1374 | ||
1375 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1376 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1377 | 32, /* rightshift */ | |
1378 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1379 | 16, /* bitsize */ | |
1380 | FALSE, /* pc_relative */ | |
1381 | 0, /* bitpos */ | |
1382 | complain_overflow_dont, /* complain_on_overflow */ | |
1383 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1384 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1385 | FALSE, /* partial_inplace */ | |
1386 | 0, /* src_mask */ | |
1387 | 0xffff, /* dst_mask */ | |
1388 | FALSE), /* pcrel_offset */ | |
1389 | ||
1390 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1391 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1392 | 32, /* rightshift */ | |
1393 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1394 | 16, /* bitsize */ | |
1395 | FALSE, /* pc_relative */ | |
1396 | 0, /* bitpos */ | |
1397 | complain_overflow_dont, /* complain_on_overflow */ | |
1398 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1399 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1400 | FALSE, /* partial_inplace */ | |
1401 | 0, /* src_mask */ | |
1402 | 0xffff, /* dst_mask */ | |
1403 | FALSE), /* pcrel_offset */ | |
1404 | ||
1405 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1406 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1407 | 48, /* rightshift */ | |
1408 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1409 | 16, /* bitsize */ | |
1410 | FALSE, /* pc_relative */ | |
1411 | 0, /* bitpos */ | |
1412 | complain_overflow_dont, /* complain_on_overflow */ | |
1413 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1414 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1415 | FALSE, /* partial_inplace */ | |
1416 | 0, /* src_mask */ | |
1417 | 0xffff, /* dst_mask */ | |
1418 | FALSE), /* pcrel_offset */ | |
1419 | ||
1420 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1421 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1422 | 48, /* rightshift */ | |
1423 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1424 | 16, /* bitsize */ | |
1425 | FALSE, /* pc_relative */ | |
1426 | 0, /* bitpos */ | |
1427 | complain_overflow_dont, /* complain_on_overflow */ | |
1428 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1429 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1430 | FALSE, /* partial_inplace */ | |
1431 | 0, /* src_mask */ | |
1432 | 0xffff, /* dst_mask */ | |
1433 | FALSE), /* pcrel_offset */ | |
1434 | ||
1435 | /* Like DTPREL16, but for insns with a DS field. */ | |
1436 | HOWTO (R_PPC64_DTPREL16_DS, | |
1437 | 0, /* rightshift */ | |
1438 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1439 | 16, /* bitsize */ | |
1440 | FALSE, /* pc_relative */ | |
1441 | 0, /* bitpos */ | |
1442 | complain_overflow_signed, /* complain_on_overflow */ | |
1443 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1444 | "R_PPC64_DTPREL16_DS", /* name */ | |
1445 | FALSE, /* partial_inplace */ | |
1446 | 0, /* src_mask */ | |
1447 | 0xfffc, /* dst_mask */ | |
1448 | FALSE), /* pcrel_offset */ | |
1449 | ||
1450 | /* Like DTPREL16_DS, but no overflow. */ | |
1451 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1452 | 0, /* rightshift */ | |
1453 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1454 | 16, /* bitsize */ | |
1455 | FALSE, /* pc_relative */ | |
1456 | 0, /* bitpos */ | |
1457 | complain_overflow_dont, /* complain_on_overflow */ | |
1458 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1459 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1460 | FALSE, /* partial_inplace */ | |
1461 | 0, /* src_mask */ | |
1462 | 0xfffc, /* dst_mask */ | |
1463 | FALSE), /* pcrel_offset */ | |
1464 | ||
1465 | /* Computes a tp-relative displacement, the difference between the value of | |
1466 | sym+add and the value of the thread pointer (r13). */ | |
1467 | HOWTO (R_PPC64_TPREL64, | |
1468 | 0, /* rightshift */ | |
1469 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1470 | 64, /* bitsize */ | |
1471 | FALSE, /* pc_relative */ | |
1472 | 0, /* bitpos */ | |
1473 | complain_overflow_dont, /* complain_on_overflow */ | |
1474 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1475 | "R_PPC64_TPREL64", /* name */ | |
1476 | FALSE, /* partial_inplace */ | |
1477 | 0, /* src_mask */ | |
1478 | ONES (64), /* dst_mask */ | |
1479 | FALSE), /* pcrel_offset */ | |
1480 | ||
1481 | /* A 16 bit tprel reloc. */ | |
1482 | HOWTO (R_PPC64_TPREL16, | |
1483 | 0, /* rightshift */ | |
1484 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1485 | 16, /* bitsize */ | |
1486 | FALSE, /* pc_relative */ | |
1487 | 0, /* bitpos */ | |
1488 | complain_overflow_signed, /* complain_on_overflow */ | |
1489 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1490 | "R_PPC64_TPREL16", /* name */ | |
1491 | FALSE, /* partial_inplace */ | |
1492 | 0, /* src_mask */ | |
1493 | 0xffff, /* dst_mask */ | |
1494 | FALSE), /* pcrel_offset */ | |
1495 | ||
1496 | /* Like TPREL16, but no overflow. */ | |
1497 | HOWTO (R_PPC64_TPREL16_LO, | |
1498 | 0, /* rightshift */ | |
1499 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1500 | 16, /* bitsize */ | |
1501 | FALSE, /* pc_relative */ | |
1502 | 0, /* bitpos */ | |
1503 | complain_overflow_dont, /* complain_on_overflow */ | |
1504 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1505 | "R_PPC64_TPREL16_LO", /* name */ | |
1506 | FALSE, /* partial_inplace */ | |
1507 | 0, /* src_mask */ | |
1508 | 0xffff, /* dst_mask */ | |
1509 | FALSE), /* pcrel_offset */ | |
1510 | ||
1511 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1512 | HOWTO (R_PPC64_TPREL16_HI, | |
1513 | 16, /* rightshift */ | |
1514 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1515 | 16, /* bitsize */ | |
1516 | FALSE, /* pc_relative */ | |
1517 | 0, /* bitpos */ | |
1518 | complain_overflow_dont, /* complain_on_overflow */ | |
1519 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1520 | "R_PPC64_TPREL16_HI", /* name */ | |
1521 | FALSE, /* partial_inplace */ | |
1522 | 0, /* src_mask */ | |
1523 | 0xffff, /* dst_mask */ | |
1524 | FALSE), /* pcrel_offset */ | |
1525 | ||
1526 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1527 | HOWTO (R_PPC64_TPREL16_HA, | |
1528 | 16, /* rightshift */ | |
1529 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1530 | 16, /* bitsize */ | |
1531 | FALSE, /* pc_relative */ | |
1532 | 0, /* bitpos */ | |
1533 | complain_overflow_dont, /* complain_on_overflow */ | |
1534 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1535 | "R_PPC64_TPREL16_HA", /* name */ | |
1536 | FALSE, /* partial_inplace */ | |
1537 | 0, /* src_mask */ | |
1538 | 0xffff, /* dst_mask */ | |
1539 | FALSE), /* pcrel_offset */ | |
1540 | ||
1541 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1542 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1543 | 32, /* rightshift */ | |
1544 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1545 | 16, /* bitsize */ | |
1546 | FALSE, /* pc_relative */ | |
1547 | 0, /* bitpos */ | |
1548 | complain_overflow_dont, /* complain_on_overflow */ | |
1549 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1550 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1551 | FALSE, /* partial_inplace */ | |
1552 | 0, /* src_mask */ | |
1553 | 0xffff, /* dst_mask */ | |
1554 | FALSE), /* pcrel_offset */ | |
1555 | ||
1556 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1557 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1558 | 32, /* rightshift */ | |
1559 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1560 | 16, /* bitsize */ | |
1561 | FALSE, /* pc_relative */ | |
1562 | 0, /* bitpos */ | |
1563 | complain_overflow_dont, /* complain_on_overflow */ | |
1564 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1565 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1566 | FALSE, /* partial_inplace */ | |
1567 | 0, /* src_mask */ | |
1568 | 0xffff, /* dst_mask */ | |
1569 | FALSE), /* pcrel_offset */ | |
1570 | ||
1571 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1572 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1573 | 48, /* rightshift */ | |
1574 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1575 | 16, /* bitsize */ | |
1576 | FALSE, /* pc_relative */ | |
1577 | 0, /* bitpos */ | |
1578 | complain_overflow_dont, /* complain_on_overflow */ | |
1579 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1580 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1581 | FALSE, /* partial_inplace */ | |
1582 | 0, /* src_mask */ | |
1583 | 0xffff, /* dst_mask */ | |
1584 | FALSE), /* pcrel_offset */ | |
1585 | ||
1586 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1587 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1588 | 48, /* rightshift */ | |
1589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1590 | 16, /* bitsize */ | |
1591 | FALSE, /* pc_relative */ | |
1592 | 0, /* bitpos */ | |
1593 | complain_overflow_dont, /* complain_on_overflow */ | |
1594 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1595 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1596 | FALSE, /* partial_inplace */ | |
1597 | 0, /* src_mask */ | |
1598 | 0xffff, /* dst_mask */ | |
1599 | FALSE), /* pcrel_offset */ | |
1600 | ||
1601 | /* Like TPREL16, but for insns with a DS field. */ | |
1602 | HOWTO (R_PPC64_TPREL16_DS, | |
1603 | 0, /* rightshift */ | |
1604 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1605 | 16, /* bitsize */ | |
1606 | FALSE, /* pc_relative */ | |
1607 | 0, /* bitpos */ | |
1608 | complain_overflow_signed, /* complain_on_overflow */ | |
1609 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1610 | "R_PPC64_TPREL16_DS", /* name */ | |
1611 | FALSE, /* partial_inplace */ | |
1612 | 0, /* src_mask */ | |
1613 | 0xfffc, /* dst_mask */ | |
1614 | FALSE), /* pcrel_offset */ | |
1615 | ||
1616 | /* Like TPREL16_DS, but no overflow. */ | |
1617 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1618 | 0, /* rightshift */ | |
1619 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1620 | 16, /* bitsize */ | |
1621 | FALSE, /* pc_relative */ | |
1622 | 0, /* bitpos */ | |
1623 | complain_overflow_dont, /* complain_on_overflow */ | |
1624 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1625 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1626 | FALSE, /* partial_inplace */ | |
1627 | 0, /* src_mask */ | |
1628 | 0xfffc, /* dst_mask */ | |
1629 | FALSE), /* pcrel_offset */ | |
1630 | ||
1631 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1632 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1633 | to the first entry relative to the TOC base (r2). */ | |
1634 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1635 | 0, /* rightshift */ | |
1636 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1637 | 16, /* bitsize */ | |
1638 | FALSE, /* pc_relative */ | |
1639 | 0, /* bitpos */ | |
1640 | complain_overflow_signed, /* complain_on_overflow */ | |
1641 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1642 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1643 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1644 | 0, /* src_mask */ |
1645 | 0xffff, /* dst_mask */ | |
b34976b6 | 1646 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1647 | |
411e1bfb AM |
1648 | /* Like GOT_TLSGD16, but no overflow. */ |
1649 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1650 | 0, /* rightshift */ |
1651 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1652 | 16, /* bitsize */ | |
b34976b6 | 1653 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1654 | 0, /* bitpos */ |
1655 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1656 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1657 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1658 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1659 | 0, /* src_mask */ |
1660 | 0xffff, /* dst_mask */ | |
b34976b6 | 1661 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1662 | |
411e1bfb AM |
1663 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1664 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1665 | 16, /* rightshift */ |
1666 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1667 | 16, /* bitsize */ | |
b34976b6 | 1668 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1669 | 0, /* bitpos */ |
1670 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1671 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1672 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1673 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1674 | 0, /* src_mask */ |
1675 | 0xffff, /* dst_mask */ | |
b34976b6 | 1676 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1677 | |
411e1bfb AM |
1678 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1679 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1680 | 16, /* rightshift */ |
1681 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1682 | 16, /* bitsize */ | |
b34976b6 | 1683 | FALSE, /* pc_relative */ |
5bd4f169 | 1684 | 0, /* bitpos */ |
411e1bfb | 1685 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1686 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1687 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1688 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1689 | 0, /* src_mask */ |
1690 | 0xffff, /* dst_mask */ | |
b34976b6 | 1691 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1692 | |
411e1bfb AM |
1693 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1694 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1695 | first entry relative to the TOC base (r2). */ | |
1696 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1697 | 0, /* rightshift */ |
1698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1699 | 16, /* bitsize */ | |
b34976b6 | 1700 | FALSE, /* pc_relative */ |
5bd4f169 | 1701 | 0, /* bitpos */ |
411e1bfb AM |
1702 | complain_overflow_signed, /* complain_on_overflow */ |
1703 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1704 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1705 | FALSE, /* partial_inplace */ |
d006db6c | 1706 | 0, /* src_mask */ |
411e1bfb | 1707 | 0xffff, /* dst_mask */ |
b34976b6 | 1708 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1709 | |
411e1bfb AM |
1710 | /* Like GOT_TLSLD16, but no overflow. */ |
1711 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1712 | 0, /* rightshift */ |
1713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1714 | 16, /* bitsize */ | |
b34976b6 | 1715 | FALSE, /* pc_relative */ |
5bd4f169 | 1716 | 0, /* bitpos */ |
411e1bfb AM |
1717 | complain_overflow_dont, /* complain_on_overflow */ |
1718 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1719 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1720 | FALSE, /* partial_inplace */ |
d006db6c | 1721 | 0, /* src_mask */ |
411e1bfb | 1722 | 0xffff, /* dst_mask */ |
b34976b6 | 1723 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1724 | |
411e1bfb AM |
1725 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1726 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1727 | 16, /* rightshift */ | |
5bd4f169 AM |
1728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1729 | 16, /* bitsize */ | |
b34976b6 | 1730 | FALSE, /* pc_relative */ |
5bd4f169 | 1731 | 0, /* bitpos */ |
411e1bfb | 1732 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1733 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1734 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1735 | FALSE, /* partial_inplace */ |
d006db6c | 1736 | 0, /* src_mask */ |
411e1bfb | 1737 | 0xffff, /* dst_mask */ |
b34976b6 | 1738 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1739 | |
411e1bfb AM |
1740 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1741 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1742 | 16, /* rightshift */ | |
5bd4f169 AM |
1743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1744 | 16, /* bitsize */ | |
b34976b6 | 1745 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1746 | 0, /* bitpos */ |
1747 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1748 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1749 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1750 | FALSE, /* partial_inplace */ |
d006db6c | 1751 | 0, /* src_mask */ |
411e1bfb | 1752 | 0xffff, /* dst_mask */ |
b34976b6 | 1753 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1754 | |
411e1bfb AM |
1755 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1756 | the offset to the entry relative to the TOC base (r2). */ | |
1757 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1758 | 0, /* rightshift */ |
1759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1760 | 16, /* bitsize */ | |
b34976b6 | 1761 | FALSE, /* pc_relative */ |
5bd4f169 | 1762 | 0, /* bitpos */ |
411e1bfb | 1763 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1764 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1765 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1766 | FALSE, /* partial_inplace */ |
d006db6c | 1767 | 0, /* src_mask */ |
5bd4f169 | 1768 | 0xfffc, /* dst_mask */ |
b34976b6 | 1769 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1770 | |
411e1bfb AM |
1771 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1772 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1773 | 0, /* rightshift */ |
c061c2d8 AM |
1774 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1775 | 16, /* bitsize */ | |
b34976b6 | 1776 | FALSE, /* pc_relative */ |
5bd4f169 | 1777 | 0, /* bitpos */ |
411e1bfb AM |
1778 | complain_overflow_dont, /* complain_on_overflow */ |
1779 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1780 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1781 | FALSE, /* partial_inplace */ |
d006db6c | 1782 | 0, /* src_mask */ |
c061c2d8 | 1783 | 0xfffc, /* dst_mask */ |
b34976b6 | 1784 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1785 | |
411e1bfb AM |
1786 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1787 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1788 | 16, /* rightshift */ | |
5bd4f169 AM |
1789 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1790 | 16, /* bitsize */ | |
b34976b6 | 1791 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1792 | 0, /* bitpos */ |
1793 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1794 | ppc64_elf_unhandled_reloc, /* special_function */ |
1795 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1796 | FALSE, /* partial_inplace */ |
d006db6c | 1797 | 0, /* src_mask */ |
411e1bfb | 1798 | 0xffff, /* dst_mask */ |
b34976b6 | 1799 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1800 | |
411e1bfb AM |
1801 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1802 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1803 | 16, /* rightshift */ | |
1804 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1805 | 16, /* bitsize */ | |
1806 | FALSE, /* pc_relative */ | |
1807 | 0, /* bitpos */ | |
1808 | complain_overflow_dont, /* complain_on_overflow */ | |
1809 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1810 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1811 | FALSE, /* partial_inplace */ | |
1812 | 0, /* src_mask */ | |
1813 | 0xffff, /* dst_mask */ | |
1814 | FALSE), /* pcrel_offset */ | |
1815 | ||
1816 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1817 | offset to the entry relative to the TOC base (r2). */ | |
1818 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1819 | 0, /* rightshift */ |
1820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1821 | 16, /* bitsize */ | |
b34976b6 | 1822 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1823 | 0, /* bitpos */ |
1824 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1825 | ppc64_elf_unhandled_reloc, /* special_function */ |
1826 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1827 | FALSE, /* partial_inplace */ |
d006db6c | 1828 | 0, /* src_mask */ |
ad8e1ba5 | 1829 | 0xfffc, /* dst_mask */ |
b34976b6 | 1830 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1831 | |
411e1bfb AM |
1832 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1833 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1834 | 0, /* rightshift */ |
1835 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1836 | 16, /* bitsize */ | |
b34976b6 | 1837 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1838 | 0, /* bitpos */ |
1839 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1840 | ppc64_elf_unhandled_reloc, /* special_function */ |
1841 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1842 | FALSE, /* partial_inplace */ |
d006db6c | 1843 | 0, /* src_mask */ |
ad8e1ba5 | 1844 | 0xfffc, /* dst_mask */ |
b34976b6 | 1845 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1846 | |
411e1bfb AM |
1847 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1848 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1849 | 16, /* rightshift */ | |
5bd4f169 AM |
1850 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1851 | 16, /* bitsize */ | |
b34976b6 | 1852 | FALSE, /* pc_relative */ |
5bd4f169 | 1853 | 0, /* bitpos */ |
411e1bfb | 1854 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1855 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1856 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1857 | FALSE, /* partial_inplace */ |
d006db6c | 1858 | 0, /* src_mask */ |
411e1bfb | 1859 | 0xffff, /* dst_mask */ |
b34976b6 | 1860 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1861 | |
411e1bfb AM |
1862 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1863 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1864 | 16, /* rightshift */ | |
5bd4f169 AM |
1865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1866 | 16, /* bitsize */ | |
b34976b6 | 1867 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1868 | 0, /* bitpos */ |
1869 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1870 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1871 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1872 | FALSE, /* partial_inplace */ |
d006db6c | 1873 | 0, /* src_mask */ |
411e1bfb | 1874 | 0xffff, /* dst_mask */ |
b34976b6 | 1875 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1876 | |
e054468f AM |
1877 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1878 | 0, /* rightshift */ | |
1879 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1880 | 64, /* bitsize */ | |
1881 | FALSE, /* pc_relative */ | |
1882 | 0, /* bitpos */ | |
1883 | complain_overflow_dont, /* complain_on_overflow */ | |
1884 | bfd_elf_generic_reloc, /* special_function */ | |
1885 | "R_PPC64_IRELATIVE", /* name */ | |
1886 | FALSE, /* partial_inplace */ | |
1887 | 0, /* src_mask */ | |
1888 | ONES (64), /* dst_mask */ | |
1889 | FALSE), /* pcrel_offset */ | |
1890 | ||
5bd4f169 AM |
1891 | /* GNU extension to record C++ vtable hierarchy. */ |
1892 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1893 | 0, /* rightshift */ | |
1894 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1895 | 0, /* bitsize */ | |
b34976b6 | 1896 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1897 | 0, /* bitpos */ |
1898 | complain_overflow_dont, /* complain_on_overflow */ | |
1899 | NULL, /* special_function */ | |
1900 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1901 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1902 | 0, /* src_mask */ |
1903 | 0, /* dst_mask */ | |
b34976b6 | 1904 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1905 | |
1906 | /* GNU extension to record C++ vtable member usage. */ | |
1907 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1908 | 0, /* rightshift */ | |
1909 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1910 | 0, /* bitsize */ | |
b34976b6 | 1911 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1912 | 0, /* bitpos */ |
1913 | complain_overflow_dont, /* complain_on_overflow */ | |
1914 | NULL, /* special_function */ | |
1915 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1916 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1917 | 0, /* src_mask */ |
1918 | 0, /* dst_mask */ | |
b34976b6 | 1919 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1920 | }; |
1921 | ||
1922 | \f | |
1923 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1924 | be done. */ | |
1925 | ||
1926 | static void | |
4ce794b7 | 1927 | ppc_howto_init (void) |
5bd4f169 AM |
1928 | { |
1929 | unsigned int i, type; | |
1930 | ||
1931 | for (i = 0; | |
1932 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1933 | i++) | |
1934 | { | |
1935 | type = ppc64_elf_howto_raw[i].type; | |
1936 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1937 | / sizeof (ppc64_elf_howto_table[0]))); | |
1938 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1939 | } | |
1940 | } | |
1941 | ||
1942 | static reloc_howto_type * | |
4ce794b7 AM |
1943 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1944 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1945 | { |
411e1bfb | 1946 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1947 | |
1948 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1949 | /* Initialize howto table if needed. */ | |
1950 | ppc_howto_init (); | |
1951 | ||
4ce794b7 | 1952 | switch (code) |
5bd4f169 AM |
1953 | { |
1954 | default: | |
4ce794b7 | 1955 | return NULL; |
5bd4f169 | 1956 | |
411e1bfb AM |
1957 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1958 | break; | |
1959 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1960 | break; | |
1961 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1962 | break; | |
1963 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1964 | break; | |
1965 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1966 | break; | |
1967 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1968 | break; | |
1969 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2018 | break; |
411e1bfb | 2019 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2020 | break; |
411e1bfb | 2021 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2022 | break; |
411e1bfb | 2023 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2024 | break; |
411e1bfb | 2025 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2026 | break; |
411e1bfb | 2027 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2028 | break; |
411e1bfb | 2029 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2030 | break; |
411e1bfb | 2031 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2032 | break; |
411e1bfb | 2033 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2034 | break; |
411e1bfb | 2035 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2036 | break; |
411e1bfb | 2037 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2038 | break; |
411e1bfb | 2039 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2040 | break; |
411e1bfb | 2041 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2042 | break; |
411e1bfb | 2043 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2044 | break; |
411e1bfb | 2045 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2046 | break; |
411e1bfb | 2047 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2048 | break; |
411e1bfb | 2049 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2050 | break; |
411e1bfb | 2051 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2052 | break; |
411e1bfb | 2053 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2054 | break; |
411e1bfb | 2055 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2056 | break; |
411e1bfb | 2057 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2058 | break; |
411e1bfb | 2059 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2060 | break; |
411e1bfb | 2061 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2062 | break; |
411e1bfb | 2063 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2064 | break; |
411e1bfb | 2065 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2066 | break; |
411e1bfb | 2067 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2068 | break; |
411e1bfb | 2069 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2070 | break; |
411e1bfb | 2071 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2072 | break; |
411e1bfb | 2073 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2074 | break; |
411e1bfb | 2075 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2076 | break; |
727fc41e AM |
2077 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2078 | break; | |
2079 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2080 | break; | |
411e1bfb | 2081 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2082 | break; |
411e1bfb | 2083 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2084 | break; |
411e1bfb | 2085 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2086 | break; |
411e1bfb | 2087 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2088 | break; |
411e1bfb | 2089 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2090 | break; |
411e1bfb | 2091 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2092 | break; |
411e1bfb AM |
2093 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2094 | break; | |
2095 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2096 | break; | |
2097 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2098 | break; | |
2099 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2100 | break; | |
2101 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2102 | break; | |
2103 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2104 | break; | |
2105 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2106 | break; | |
2107 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2108 | break; | |
2109 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2110 | break; | |
2111 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2112 | break; | |
2113 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2114 | break; | |
2115 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2116 | break; | |
2117 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2118 | break; | |
2119 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2120 | break; | |
2121 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2122 | break; | |
2123 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2124 | break; | |
2125 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2126 | break; | |
2127 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2128 | break; | |
2129 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2130 | break; | |
2131 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2132 | break; | |
2133 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2134 | break; | |
2135 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2136 | break; | |
2137 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2138 | break; | |
2139 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2140 | break; | |
2141 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2142 | break; | |
2143 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2144 | break; | |
2145 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2146 | break; | |
2147 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2148 | break; | |
2149 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2150 | break; | |
2151 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2152 | break; | |
2153 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2154 | break; | |
2155 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2156 | break; | |
2157 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2158 | break; | |
2159 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2160 | break; | |
2161 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2162 | break; |
2163 | } | |
2164 | ||
4ce794b7 | 2165 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2166 | }; |
2167 | ||
157090f7 AM |
2168 | static reloc_howto_type * |
2169 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2170 | const char *r_name) | |
2171 | { | |
2172 | unsigned int i; | |
2173 | ||
2174 | for (i = 0; | |
2175 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2176 | i++) | |
2177 | if (ppc64_elf_howto_raw[i].name != NULL | |
2178 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2179 | return &ppc64_elf_howto_raw[i]; | |
2180 | ||
2181 | return NULL; | |
2182 | } | |
2183 | ||
5bd4f169 AM |
2184 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2185 | ||
2186 | static void | |
4ce794b7 AM |
2187 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2188 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2189 | { |
65f38f15 AM |
2190 | unsigned int type; |
2191 | ||
ef60b7ff | 2192 | /* Initialize howto table if needed. */ |
5bd4f169 | 2193 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2194 | ppc_howto_init (); |
2195 | ||
65f38f15 | 2196 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2197 | if (type >= (sizeof (ppc64_elf_howto_table) |
2198 | / sizeof (ppc64_elf_howto_table[0]))) | |
2199 | { | |
2200 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2201 | abfd, (int) type); |
2202 | type = R_PPC64_NONE; | |
d0fb9a8d | 2203 | } |
65f38f15 | 2204 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2205 | } |
2206 | ||
04c9666a | 2207 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2208 | |
2209 | static bfd_reloc_status_type | |
4ce794b7 AM |
2210 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2211 | void *data, asection *input_section, | |
2212 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2213 | { |
805fc799 AM |
2214 | /* If this is a relocatable link (output_bfd test tells us), just |
2215 | call the generic function. Any adjustment will be done at final | |
2216 | link time. */ | |
2217 | if (output_bfd != NULL) | |
cedb70c5 | 2218 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2219 | input_section, output_bfd, error_message); |
2220 | ||
2221 | /* Adjust the addend for sign extension of the low 16 bits. | |
2222 | We won't actually be using the low 16 bits, so trashing them | |
2223 | doesn't matter. */ | |
2224 | reloc_entry->addend += 0x8000; | |
2225 | return bfd_reloc_continue; | |
2226 | } | |
5bd4f169 | 2227 | |
2441e016 AM |
2228 | static bfd_reloc_status_type |
2229 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2230 | void *data, asection *input_section, | |
2231 | bfd *output_bfd, char **error_message) | |
2232 | { | |
2233 | if (output_bfd != NULL) | |
2234 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2235 | input_section, output_bfd, error_message); | |
2236 | ||
699733f6 AM |
2237 | if (strcmp (symbol->section->name, ".opd") == 0 |
2238 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2239 | { |
2240 | bfd_vma dest = opd_entry_value (symbol->section, | |
2241 | symbol->value + reloc_entry->addend, | |
2242 | NULL, NULL); | |
2243 | if (dest != (bfd_vma) -1) | |
2244 | reloc_entry->addend = dest - (symbol->value | |
2245 | + symbol->section->output_section->vma | |
2246 | + symbol->section->output_offset); | |
2247 | } | |
2248 | return bfd_reloc_continue; | |
2249 | } | |
2250 | ||
805fc799 | 2251 | static bfd_reloc_status_type |
4ce794b7 AM |
2252 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2253 | void *data, asection *input_section, | |
2254 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2255 | { |
2256 | long insn; | |
04c9666a | 2257 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2258 | bfd_size_type octets; |
2259 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2260 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2261 | |
2262 | /* If this is a relocatable link (output_bfd test tells us), just | |
2263 | call the generic function. Any adjustment will be done at final | |
2264 | link time. */ | |
5bd4f169 | 2265 | if (output_bfd != NULL) |
cedb70c5 | 2266 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2267 | input_section, output_bfd, error_message); |
2268 | ||
2269 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2270 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2271 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2272 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2273 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2274 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2275 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2276 | |
2277 | if (is_power4) | |
5bd4f169 | 2278 | { |
805fc799 AM |
2279 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2280 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2281 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2282 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2283 | insn |= 0x02 << 21; | |
2284 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2285 | insn |= 0x08 << 21; | |
2286 | else | |
2441e016 | 2287 | goto out; |
5bd4f169 | 2288 | } |
805fc799 AM |
2289 | else |
2290 | { | |
2291 | bfd_vma target = 0; | |
2292 | bfd_vma from; | |
5bd4f169 | 2293 | |
805fc799 AM |
2294 | if (!bfd_is_com_section (symbol->section)) |
2295 | target = symbol->value; | |
2296 | target += symbol->section->output_section->vma; | |
2297 | target += symbol->section->output_offset; | |
2298 | target += reloc_entry->addend; | |
5bd4f169 | 2299 | |
805fc799 AM |
2300 | from = (reloc_entry->address |
2301 | + input_section->output_offset | |
2302 | + input_section->output_section->vma); | |
5bd4f169 | 2303 | |
805fc799 AM |
2304 | /* Invert 'y' bit if not the default. */ |
2305 | if ((bfd_signed_vma) (target - from) < 0) | |
2306 | insn ^= 0x01 << 21; | |
2307 | } | |
4ce794b7 | 2308 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2309 | out: |
2310 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2311 | input_section, output_bfd, error_message); | |
805fc799 | 2312 | } |
5bd4f169 | 2313 | |
805fc799 | 2314 | static bfd_reloc_status_type |
4ce794b7 AM |
2315 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2316 | void *data, asection *input_section, | |
2317 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2318 | { |
2319 | /* If this is a relocatable link (output_bfd test tells us), just | |
2320 | call the generic function. Any adjustment will be done at final | |
2321 | link time. */ | |
2322 | if (output_bfd != NULL) | |
cedb70c5 | 2323 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2324 | input_section, output_bfd, error_message); |
5bd4f169 | 2325 | |
805fc799 AM |
2326 | /* Subtract the symbol section base address. */ |
2327 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2328 | return bfd_reloc_continue; |
2329 | } | |
2330 | ||
805fc799 | 2331 | static bfd_reloc_status_type |
4ce794b7 AM |
2332 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2333 | void *data, asection *input_section, | |
2334 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2335 | { |
2336 | /* If this is a relocatable link (output_bfd test tells us), just | |
2337 | call the generic function. Any adjustment will be done at final | |
2338 | link time. */ | |
2339 | if (output_bfd != NULL) | |
cedb70c5 | 2340 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2341 | input_section, output_bfd, error_message); |
2342 | ||
2343 | /* Subtract the symbol section base address. */ | |
2344 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2345 | ||
2346 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2347 | reloc_entry->addend += 0x8000; | |
2348 | return bfd_reloc_continue; | |
2349 | } | |
2350 | ||
2351 | static bfd_reloc_status_type | |
4ce794b7 AM |
2352 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2353 | void *data, asection *input_section, | |
2354 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2355 | { |
2356 | bfd_vma TOCstart; | |
2357 | ||
2358 | /* If this is a relocatable link (output_bfd test tells us), just | |
2359 | call the generic function. Any adjustment will be done at final | |
2360 | link time. */ | |
2361 | if (output_bfd != NULL) | |
cedb70c5 | 2362 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2363 | input_section, output_bfd, error_message); |
2364 | ||
2365 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2366 | if (TOCstart == 0) | |
2367 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2368 | ||
2369 | /* Subtract the TOC base address. */ | |
2370 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2371 | return bfd_reloc_continue; | |
2372 | } | |
2373 | ||
2374 | static bfd_reloc_status_type | |
4ce794b7 AM |
2375 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2376 | void *data, asection *input_section, | |
2377 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2378 | { |
2379 | bfd_vma TOCstart; | |
2380 | ||
2381 | /* If this is a relocatable link (output_bfd test tells us), just | |
2382 | call the generic function. Any adjustment will be done at final | |
2383 | link time. */ | |
2384 | if (output_bfd != NULL) | |
cedb70c5 | 2385 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2386 | input_section, output_bfd, error_message); |
2387 | ||
2388 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2389 | if (TOCstart == 0) | |
2390 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2391 | ||
2392 | /* Subtract the TOC base address. */ | |
2393 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2394 | ||
2395 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2396 | reloc_entry->addend += 0x8000; | |
2397 | return bfd_reloc_continue; | |
2398 | } | |
2399 | ||
2400 | static bfd_reloc_status_type | |
4ce794b7 AM |
2401 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2402 | void *data, asection *input_section, | |
2403 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2404 | { |
2405 | bfd_vma TOCstart; | |
2406 | bfd_size_type octets; | |
2407 | ||
2408 | /* If this is a relocatable link (output_bfd test tells us), just | |
2409 | call the generic function. Any adjustment will be done at final | |
2410 | link time. */ | |
2411 | if (output_bfd != NULL) | |
cedb70c5 | 2412 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2413 | input_section, output_bfd, error_message); |
2414 | ||
2415 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2416 | if (TOCstart == 0) | |
2417 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2418 | ||
2419 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2420 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2421 | return bfd_reloc_ok; | |
2422 | } | |
2423 | ||
2424 | static bfd_reloc_status_type | |
4ce794b7 AM |
2425 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2426 | void *data, asection *input_section, | |
2427 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2428 | { |
2429 | /* If this is a relocatable link (output_bfd test tells us), just | |
2430 | call the generic function. Any adjustment will be done at final | |
2431 | link time. */ | |
2432 | if (output_bfd != NULL) | |
cedb70c5 | 2433 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2434 | input_section, output_bfd, error_message); |
2435 | ||
2436 | if (error_message != NULL) | |
2437 | { | |
2438 | static char buf[60]; | |
2439 | sprintf (buf, "generic linker can't handle %s", | |
2440 | reloc_entry->howto->name); | |
2441 | *error_message = buf; | |
2442 | } | |
2443 | return bfd_reloc_dangerous; | |
2444 | } | |
2445 | ||
e717da7e AM |
2446 | struct ppc64_elf_obj_tdata |
2447 | { | |
2448 | struct elf_obj_tdata elf; | |
2449 | ||
2450 | /* Shortcuts to dynamic linker sections. */ | |
2451 | asection *got; | |
2452 | asection *relgot; | |
2453 | ||
b3fac117 AM |
2454 | /* Used during garbage collection. We attach global symbols defined |
2455 | on removed .opd entries to this section so that the sym is removed. */ | |
2456 | asection *deleted_section; | |
81688140 | 2457 | |
e717da7e AM |
2458 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2459 | sections means we potentially need one of these for each input bfd. */ | |
2460 | union { | |
2461 | bfd_signed_vma refcount; | |
2462 | bfd_vma offset; | |
2463 | } tlsld_got; | |
8860955f AM |
2464 | |
2465 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2466 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2467 | }; |
2468 | ||
2469 | #define ppc64_elf_tdata(bfd) \ | |
2470 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2471 | ||
2472 | #define ppc64_tlsld_got(bfd) \ | |
2473 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2474 | ||
0c8d6e5c AM |
2475 | #define is_ppc64_elf(bfd) \ |
2476 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2477 | && elf_object_id (bfd) == PPC64_ELF_TDATA) | |
2478 | ||
e717da7e AM |
2479 | /* Override the generic function because we store some extras. */ |
2480 | ||
2481 | static bfd_boolean | |
2482 | ppc64_elf_mkobject (bfd *abfd) | |
2483 | { | |
0ffa91dd NC |
2484 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
2485 | PPC64_ELF_TDATA); | |
e717da7e AM |
2486 | } |
2487 | ||
feee612b AM |
2488 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2489 | default is 32 bit. */ | |
2490 | ||
b34976b6 | 2491 | static bfd_boolean |
4ce794b7 | 2492 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2493 | { |
2494 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2495 | { | |
2496 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2497 | ||
2498 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2499 | { | |
2500 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2501 | abfd->arch_info = abfd->arch_info->next; | |
2502 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2503 | } | |
2504 | } | |
b34976b6 | 2505 | return TRUE; |
feee612b AM |
2506 | } |
2507 | ||
d37c89e5 AM |
2508 | /* Support for core dump NOTE sections. */ |
2509 | ||
2510 | static bfd_boolean | |
2511 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2512 | { | |
eea6121a | 2513 | size_t offset, size; |
d37c89e5 AM |
2514 | |
2515 | if (note->descsz != 504) | |
2516 | return FALSE; | |
2517 | ||
2518 | /* pr_cursig */ | |
2519 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2520 | ||
2521 | /* pr_pid */ | |
2522 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2523 | ||
2524 | /* pr_reg */ | |
2525 | offset = 112; | |
eea6121a | 2526 | size = 384; |
d37c89e5 AM |
2527 | |
2528 | /* Make a ".reg/999" section. */ | |
2529 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2530 | size, note->descpos + offset); |
d37c89e5 AM |
2531 | } |
2532 | ||
2533 | static bfd_boolean | |
2534 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2535 | { | |
2536 | if (note->descsz != 136) | |
2537 | return FALSE; | |
2538 | ||
2539 | elf_tdata (abfd)->core_program | |
2540 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2541 | elf_tdata (abfd)->core_command | |
2542 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2543 | ||
2544 | return TRUE; | |
2545 | } | |
2546 | ||
183e98be AM |
2547 | static char * |
2548 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2549 | ...) | |
2550 | { | |
2551 | switch (note_type) | |
2552 | { | |
2553 | default: | |
2554 | return NULL; | |
2555 | ||
2556 | case NT_PRPSINFO: | |
2557 | { | |
2558 | char data[136]; | |
2559 | va_list ap; | |
2560 | ||
2561 | va_start (ap, note_type); | |
2562 | memset (data, 0, 40); | |
2563 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2564 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2565 | va_end (ap); | |
2566 | return elfcore_write_note (abfd, buf, bufsiz, | |
2567 | "CORE", note_type, data, sizeof (data)); | |
2568 | } | |
2569 | ||
2570 | case NT_PRSTATUS: | |
2571 | { | |
2572 | char data[504]; | |
2573 | va_list ap; | |
2574 | long pid; | |
2575 | int cursig; | |
2576 | const void *greg; | |
2577 | ||
2578 | va_start (ap, note_type); | |
2579 | memset (data, 0, 112); | |
2580 | pid = va_arg (ap, long); | |
2581 | bfd_put_32 (abfd, pid, data + 32); | |
2582 | cursig = va_arg (ap, int); | |
2583 | bfd_put_16 (abfd, cursig, data + 12); | |
2584 | greg = va_arg (ap, const void *); | |
2585 | memcpy (data + 112, greg, 384); | |
2586 | memset (data + 496, 0, 8); | |
2587 | va_end (ap); | |
2588 | return elfcore_write_note (abfd, buf, bufsiz, | |
2589 | "CORE", note_type, data, sizeof (data)); | |
2590 | } | |
2591 | } | |
2592 | } | |
2593 | ||
5bd4f169 AM |
2594 | /* Merge backend specific data from an object file to the output |
2595 | object file when linking. */ | |
2f6d9989 | 2596 | |
b34976b6 | 2597 | static bfd_boolean |
4ce794b7 | 2598 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2599 | { |
5bd4f169 AM |
2600 | /* Check if we have the same endianess. */ |
2601 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2602 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2603 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2604 | { | |
2605 | const char *msg; | |
2606 | ||
2607 | if (bfd_big_endian (ibfd)) | |
d003868e | 2608 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2609 | "and target is little endian"); |
5bd4f169 | 2610 | else |
d003868e | 2611 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2612 | "and target is big endian"); |
5bd4f169 | 2613 | |
d003868e | 2614 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2615 | |
2616 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2617 | return FALSE; |
5bd4f169 AM |
2618 | } |
2619 | ||
b34976b6 | 2620 | return TRUE; |
5bd4f169 | 2621 | } |
f0abc2a1 | 2622 | |
5d35169e AM |
2623 | /* Add extra PPC sections. */ |
2624 | ||
b35d266b | 2625 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2626 | { |
0112cd26 NC |
2627 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2628 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2629 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2630 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2631 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2632 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2633 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2634 | }; |
2635 | ||
7c8fe5c4 AM |
2636 | enum _ppc64_sec_type { |
2637 | sec_normal = 0, | |
2638 | sec_opd = 1, | |
2639 | sec_toc = 2 | |
2640 | }; | |
2641 | ||
f0abc2a1 AM |
2642 | struct _ppc64_elf_section_data |
2643 | { | |
2644 | struct bfd_elf_section_data elf; | |
411e1bfb | 2645 | |
f0abc2a1 AM |
2646 | union |
2647 | { | |
74f0fb50 AM |
2648 | /* An array with one entry for each opd function descriptor. */ |
2649 | struct _opd_sec_data | |
2650 | { | |
2651 | /* Points to the function code section for local opd entries. */ | |
2652 | asection **func_sec; | |
2653 | ||
2654 | /* After editing .opd, adjust references to opd local syms. */ | |
2655 | long *adjust; | |
2656 | } opd; | |
7c8fe5c4 | 2657 | |
3a71aa26 AM |
2658 | /* An array for toc sections, indexed by offset/8. */ |
2659 | struct _toc_sec_data | |
2660 | { | |
2661 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2662 | unsigned *symndx; | |
2663 | ||
2664 | /* And the relocation addend. */ | |
2665 | bfd_vma *add; | |
2666 | } toc; | |
7c8fe5c4 AM |
2667 | } u; |
2668 | ||
2669 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2670 | |
7c8fe5c4 AM |
2671 | /* Flag set when small branches are detected. Used to |
2672 | select suitable defaults for the stub group size. */ | |
2673 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2674 | }; |
2675 | ||
2676 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2677 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2678 | |
2679 | static bfd_boolean | |
4ce794b7 | 2680 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2681 | { |
f592407e AM |
2682 | if (!sec->used_by_bfd) |
2683 | { | |
2684 | struct _ppc64_elf_section_data *sdata; | |
2685 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2686 | |
f592407e AM |
2687 | sdata = bfd_zalloc (abfd, amt); |
2688 | if (sdata == NULL) | |
2689 | return FALSE; | |
2690 | sec->used_by_bfd = sdata; | |
2691 | } | |
f0abc2a1 AM |
2692 | |
2693 | return _bfd_elf_new_section_hook (abfd, sec); | |
2694 | } | |
4025353c | 2695 | |
74f0fb50 | 2696 | static struct _opd_sec_data * |
4025353c AM |
2697 | get_opd_info (asection * sec) |
2698 | { | |
2699 | if (sec != NULL | |
2700 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2701 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2702 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2703 | return NULL; |
2704 | } | |
90e3cdf2 JJ |
2705 | \f |
2706 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2707 | static bfd_boolean synthetic_relocatable; |
2708 | ||
699733f6 | 2709 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2710 | |
2711 | static int | |
2712 | compare_symbols (const void *ap, const void *bp) | |
2713 | { | |
2714 | const asymbol *a = * (const asymbol **) ap; | |
2715 | const asymbol *b = * (const asymbol **) bp; | |
2716 | ||
699733f6 AM |
2717 | /* Section symbols first. */ |
2718 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2719 | return -1; |
699733f6 | 2720 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2721 | return 1; |
2722 | ||
699733f6 | 2723 | /* then .opd symbols. */ |
ffcfec52 AM |
2724 | if (strcmp (a->section->name, ".opd") == 0 |
2725 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2726 | return -1; |
ffcfec52 AM |
2727 | if (strcmp (a->section->name, ".opd") != 0 |
2728 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
2729 | return 1; |
2730 | ||
699733f6 | 2731 | /* then other code symbols. */ |
90e3cdf2 JJ |
2732 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2733 | == (SEC_CODE | SEC_ALLOC) | |
2734 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2735 | != (SEC_CODE | SEC_ALLOC)) | |
2736 | return -1; | |
2737 | ||
2738 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2739 | != (SEC_CODE | SEC_ALLOC) | |
2740 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2741 | == (SEC_CODE | SEC_ALLOC)) | |
2742 | return 1; | |
2743 | ||
2744 | if (synthetic_relocatable) | |
2745 | { | |
2746 | if (a->section->id < b->section->id) | |
2747 | return -1; | |
2748 | ||
2749 | if (a->section->id > b->section->id) | |
2750 | return 1; | |
2751 | } | |
2752 | ||
2753 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2754 | return -1; | |
2755 | ||
2756 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2757 | return 1; | |
2758 | ||
4d35a0aa AM |
2759 | /* For syms with the same value, prefer strong dynamic global function |
2760 | syms over other syms. */ | |
2761 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2762 | return -1; | |
2763 | ||
2764 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2765 | return 1; | |
2766 | ||
2767 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2768 | return -1; | |
2769 | ||
2770 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2771 | return 1; | |
2772 | ||
2773 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2774 | return -1; | |
2775 | ||
2776 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2777 | return 1; | |
2778 | ||
2779 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2780 | return -1; | |
2781 | ||
2782 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2783 | return 1; | |
2784 | ||
90e3cdf2 JJ |
2785 | return 0; |
2786 | } | |
2787 | ||
699733f6 | 2788 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2789 | |
699733f6 AM |
2790 | static asymbol * |
2791 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2792 | { |
699733f6 | 2793 | long mid; |
90e3cdf2 | 2794 | |
699733f6 AM |
2795 | if (id == -1) |
2796 | { | |
2797 | while (lo < hi) | |
2798 | { | |
2799 | mid = (lo + hi) >> 1; | |
2800 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2801 | lo = mid + 1; | |
2802 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2803 | hi = mid; | |
2804 | else | |
2805 | return syms[mid]; | |
2806 | } | |
2807 | } | |
2808 | else | |
2809 | { | |
2810 | while (lo < hi) | |
2811 | { | |
2812 | mid = (lo + hi) >> 1; | |
2813 | if (syms[mid]->section->id < id) | |
2814 | lo = mid + 1; | |
2815 | else if (syms[mid]->section->id > id) | |
2816 | hi = mid; | |
2817 | else if (syms[mid]->value < value) | |
2818 | lo = mid + 1; | |
2819 | else if (syms[mid]->value > value) | |
2820 | hi = mid; | |
2821 | else | |
2822 | return syms[mid]; | |
2823 | } | |
2824 | } | |
2825 | return NULL; | |
90e3cdf2 JJ |
2826 | } |
2827 | ||
468392fb AM |
2828 | static bfd_boolean |
2829 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2830 | { | |
2831 | bfd_vma vma = *(bfd_vma *) ptr; | |
2832 | return ((section->flags & SEC_ALLOC) != 0 | |
2833 | && section->vma <= vma | |
2834 | && vma < section->vma + section->size); | |
2835 | } | |
2836 | ||
699733f6 | 2837 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2838 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2839 | |
2840 | static long | |
a7535cf3 AM |
2841 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2842 | long static_count, asymbol **static_syms, | |
2843 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2844 | asymbol **ret) |
90e3cdf2 JJ |
2845 | { |
2846 | asymbol *s; | |
699733f6 AM |
2847 | long i; |
2848 | long count; | |
90e3cdf2 | 2849 | char *names; |
a7535cf3 | 2850 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2851 | asection *opd; |
90e3cdf2 | 2852 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2853 | asymbol **syms; |
90e3cdf2 JJ |
2854 | |
2855 | *ret = NULL; | |
2856 | ||
2857 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2858 | if (opd == NULL) | |
2859 | return 0; | |
2860 | ||
a7535cf3 | 2861 | symcount = static_count; |
c9727e01 | 2862 | if (!relocatable) |
a7535cf3 | 2863 | symcount += dyn_count; |
90e3cdf2 | 2864 | if (symcount == 0) |
c9727e01 | 2865 | return 0; |
90e3cdf2 | 2866 | |
a7535cf3 AM |
2867 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2868 | if (syms == NULL) | |
7356fed5 | 2869 | return -1; |
a7535cf3 AM |
2870 | |
2871 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2872 | { | |
2873 | /* Use both symbol tables. */ | |
2874 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2875 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2876 | } | |
2877 | else if (!relocatable && static_count == 0) | |
2878 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2879 | else | |
2880 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2881 | ||
90e3cdf2 | 2882 | synthetic_relocatable = relocatable; |
595da8c5 | 2883 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2884 | |
c9727e01 AM |
2885 | if (!relocatable && symcount > 1) |
2886 | { | |
2887 | long j; | |
2888 | /* Trim duplicate syms, since we may have merged the normal and | |
2889 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2890 | different values, so trim any with the same value. */ |
c9727e01 AM |
2891 | for (i = 1, j = 1; i < symcount; ++i) |
2892 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2893 | != syms[i]->value + syms[i]->section->vma) | |
2894 | syms[j++] = syms[i]; | |
2895 | symcount = j; | |
2896 | } | |
2897 | ||
699733f6 | 2898 | i = 0; |
ffcfec52 | 2899 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
2900 | ++i; |
2901 | codesecsym = i; | |
90e3cdf2 | 2902 | |
699733f6 AM |
2903 | for (; i < symcount; ++i) |
2904 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2905 | != (SEC_CODE | SEC_ALLOC)) | |
2906 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2907 | break; | |
2908 | codesecsymend = i; | |
90e3cdf2 | 2909 | |
699733f6 AM |
2910 | for (; i < symcount; ++i) |
2911 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2912 | break; | |
2913 | secsymend = i; | |
90e3cdf2 | 2914 | |
699733f6 | 2915 | for (; i < symcount; ++i) |
ffcfec52 | 2916 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
2917 | break; |
2918 | opdsymend = i; | |
90e3cdf2 | 2919 | |
699733f6 AM |
2920 | for (; i < symcount; ++i) |
2921 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2922 | != (SEC_CODE | SEC_ALLOC)) | |
2923 | break; | |
2924 | symcount = i; | |
2925 | ||
c9727e01 | 2926 | count = 0; |
90e3cdf2 | 2927 | |
699733f6 | 2928 | if (relocatable) |
90e3cdf2 | 2929 | { |
699733f6 AM |
2930 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2931 | arelent *r; | |
2932 | size_t size; | |
2933 | long relcount; | |
90e3cdf2 | 2934 | |
468392fb AM |
2935 | if (opdsymend == secsymend) |
2936 | goto done; | |
2937 | ||
699733f6 | 2938 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2939 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2940 | if (relcount == 0) |
c9727e01 | 2941 | goto done; |
90e3cdf2 | 2942 | |
7356fed5 AM |
2943 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2944 | { | |
2945 | count = -1; | |
2946 | goto done; | |
2947 | } | |
2948 | ||
699733f6 | 2949 | size = 0; |
595da8c5 | 2950 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2951 | { |
2952 | asymbol *sym; | |
90e3cdf2 | 2953 | |
595da8c5 | 2954 | while (r < opd->relocation + relcount |
699733f6 AM |
2955 | && r->address < syms[i]->value + opd->vma) |
2956 | ++r; | |
90e3cdf2 | 2957 | |
595da8c5 | 2958 | if (r == opd->relocation + relcount) |
699733f6 | 2959 | break; |
90e3cdf2 | 2960 | |
699733f6 AM |
2961 | if (r->address != syms[i]->value + opd->vma) |
2962 | continue; | |
90e3cdf2 | 2963 | |
699733f6 AM |
2964 | if (r->howto->type != R_PPC64_ADDR64) |
2965 | continue; | |
90e3cdf2 | 2966 | |
699733f6 AM |
2967 | sym = *r->sym_ptr_ptr; |
2968 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2969 | sym->section->id, sym->value + r->addend)) | |
2970 | { | |
2971 | ++count; | |
2972 | size += sizeof (asymbol); | |
2973 | size += strlen (syms[i]->name) + 2; | |
2974 | } | |
2975 | } | |
90e3cdf2 | 2976 | |
699733f6 AM |
2977 | s = *ret = bfd_malloc (size); |
2978 | if (s == NULL) | |
2979 | { | |
7356fed5 | 2980 | count = -1; |
c9727e01 | 2981 | goto done; |
699733f6 | 2982 | } |
90e3cdf2 | 2983 | |
699733f6 | 2984 | names = (char *) (s + count); |
90e3cdf2 | 2985 | |
595da8c5 | 2986 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2987 | { |
699733f6 | 2988 | asymbol *sym; |
90e3cdf2 | 2989 | |
595da8c5 | 2990 | while (r < opd->relocation + relcount |
699733f6 AM |
2991 | && r->address < syms[i]->value + opd->vma) |
2992 | ++r; | |
90e3cdf2 | 2993 | |
595da8c5 | 2994 | if (r == opd->relocation + relcount) |
699733f6 AM |
2995 | break; |
2996 | ||
2997 | if (r->address != syms[i]->value + opd->vma) | |
2998 | continue; | |
2999 | ||
3000 | if (r->howto->type != R_PPC64_ADDR64) | |
3001 | continue; | |
90e3cdf2 | 3002 | |
699733f6 AM |
3003 | sym = *r->sym_ptr_ptr; |
3004 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3005 | sym->section->id, sym->value + r->addend)) | |
3006 | { | |
3007 | size_t len; | |
3008 | ||
3009 | *s = *syms[i]; | |
6ba2a415 | 3010 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3011 | s->section = sym->section; |
3012 | s->value = sym->value + r->addend; | |
3013 | s->name = names; | |
3014 | *names++ = '.'; | |
3015 | len = strlen (syms[i]->name); | |
3016 | memcpy (names, syms[i]->name, len + 1); | |
3017 | names += len + 1; | |
6f610d07 UW |
3018 | /* Have udata.p point back to the original symbol this |
3019 | synthetic symbol was derived from. */ | |
3020 | s->udata.p = syms[i]; | |
699733f6 AM |
3021 | s++; |
3022 | } | |
3023 | } | |
3024 | } | |
3025 | else | |
90e3cdf2 | 3026 | { |
468392fb | 3027 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3028 | bfd_byte *contents; |
3029 | size_t size; | |
468392fb AM |
3030 | long plt_count = 0; |
3031 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3032 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3033 | arelent *p; | |
90e3cdf2 | 3034 | |
699733f6 AM |
3035 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3036 | { | |
3037 | if (contents) | |
c9727e01 AM |
3038 | { |
3039 | free_contents_and_exit: | |
3040 | free (contents); | |
3041 | } | |
7356fed5 | 3042 | count = -1; |
c9727e01 | 3043 | goto done; |
699733f6 | 3044 | } |
90e3cdf2 | 3045 | |
699733f6 AM |
3046 | size = 0; |
3047 | for (i = secsymend; i < opdsymend; ++i) | |
3048 | { | |
3049 | bfd_vma ent; | |
90e3cdf2 | 3050 | |
5ef11c02 AM |
3051 | /* Ignore bogus symbols. */ |
3052 | if (syms[i]->value > opd->size - 8) | |
3053 | continue; | |
3054 | ||
699733f6 AM |
3055 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3056 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3057 | { | |
3058 | ++count; | |
3059 | size += sizeof (asymbol); | |
3060 | size += strlen (syms[i]->name) + 2; | |
3061 | } | |
3062 | } | |
90e3cdf2 | 3063 | |
468392fb | 3064 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3065 | if (dyn_count != 0 |
3066 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3067 | { |
3068 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3069 | size_t extdynsize; | |
3070 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3071 | ||
3072 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3073 | goto free_contents_and_exit; | |
3074 | ||
3075 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3076 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3077 | ||
3078 | extdyn = dynbuf; | |
3079 | extdynend = extdyn + dynamic->size; | |
3080 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3081 | { | |
3082 | Elf_Internal_Dyn dyn; | |
3083 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3084 | ||
3085 | if (dyn.d_tag == DT_NULL) | |
3086 | break; | |
3087 | ||
3088 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3089 | { | |
3090 | /* The first glink stub starts at offset 32; see comment in | |
3091 | ppc64_elf_finish_dynamic_sections. */ | |
3092 | glink_vma = dyn.d_un.d_val + 32; | |
3093 | /* The .glink section usually does not survive the final | |
3094 | link; search for the section (usually .text) where the | |
3095 | glink stubs now reside. */ | |
3096 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3097 | &glink_vma); | |
3098 | break; | |
3099 | } | |
3100 | } | |
3101 | ||
3102 | free (dynbuf); | |
3103 | } | |
3104 | ||
3105 | if (glink != NULL) | |
3106 | { | |
3107 | /* Determine __glink trampoline by reading the relative branch | |
3108 | from the first glink stub. */ | |
3109 | bfd_byte buf[4]; | |
3110 | if (bfd_get_section_contents (abfd, glink, buf, | |
3111 | glink_vma + 4 - glink->vma, 4)) | |
3112 | { | |
3113 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3114 | insn ^= B_DOT; | |
3115 | if ((insn & ~0x3fffffc) == 0) | |
3116 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3117 | } | |
3118 | ||
3119 | if (resolv_vma) | |
3120 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3121 | |
066ee829 AM |
3122 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3123 | if (relplt != NULL) | |
3124 | { | |
3125 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3126 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3127 | goto free_contents_and_exit; | |
468392fb | 3128 | |
066ee829 AM |
3129 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3130 | size += plt_count * sizeof (asymbol); | |
468392fb | 3131 | |
066ee829 AM |
3132 | p = relplt->relocation; |
3133 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3134 | { |
3135 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3136 | if (p->addend != 0) | |
3137 | size += sizeof ("+0x") - 1 + 16; | |
3138 | } | |
066ee829 | 3139 | } |
468392fb AM |
3140 | } |
3141 | ||
699733f6 AM |
3142 | s = *ret = bfd_malloc (size); |
3143 | if (s == NULL) | |
7356fed5 | 3144 | goto free_contents_and_exit; |
90e3cdf2 | 3145 | |
468392fb | 3146 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3147 | |
699733f6 | 3148 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3149 | { |
699733f6 | 3150 | bfd_vma ent; |
90e3cdf2 | 3151 | |
5ef11c02 AM |
3152 | if (syms[i]->value > opd->size - 8) |
3153 | continue; | |
3154 | ||
699733f6 AM |
3155 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3156 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3157 | { |
c9727e01 | 3158 | long lo, hi; |
699733f6 | 3159 | size_t len; |
c9727e01 | 3160 | asection *sec = abfd->sections; |
90e3cdf2 | 3161 | |
699733f6 AM |
3162 | *s = *syms[i]; |
3163 | lo = codesecsym; | |
3164 | hi = codesecsymend; | |
3165 | while (lo < hi) | |
3166 | { | |
c9727e01 | 3167 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3168 | if (syms[mid]->section->vma < ent) |
3169 | lo = mid + 1; | |
3170 | else if (syms[mid]->section->vma > ent) | |
3171 | hi = mid; | |
3172 | else | |
c9727e01 AM |
3173 | { |
3174 | sec = syms[mid]->section; | |
3175 | break; | |
3176 | } | |
699733f6 AM |
3177 | } |
3178 | ||
c9727e01 | 3179 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3180 | sec = syms[lo - 1]->section; |
699733f6 AM |
3181 | |
3182 | for (; sec != NULL; sec = sec->next) | |
3183 | { | |
3184 | if (sec->vma > ent) | |
3185 | break; | |
3186 | if ((sec->flags & SEC_ALLOC) == 0 | |
3187 | || (sec->flags & SEC_LOAD) == 0) | |
3188 | break; | |
3189 | if ((sec->flags & SEC_CODE) != 0) | |
3190 | s->section = sec; | |
3191 | } | |
6ba2a415 | 3192 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3193 | s->value = ent - s->section->vma; |
3194 | s->name = names; | |
3195 | *names++ = '.'; | |
3196 | len = strlen (syms[i]->name); | |
3197 | memcpy (names, syms[i]->name, len + 1); | |
3198 | names += len + 1; | |
6f610d07 UW |
3199 | /* Have udata.p point back to the original symbol this |
3200 | synthetic symbol was derived from. */ | |
3201 | s->udata.p = syms[i]; | |
699733f6 | 3202 | s++; |
90e3cdf2 | 3203 | } |
90e3cdf2 | 3204 | } |
699733f6 | 3205 | free (contents); |
468392fb AM |
3206 | |
3207 | if (glink != NULL && relplt != NULL) | |
3208 | { | |
3209 | if (resolv_vma) | |
3210 | { | |
3211 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3212 | memset (s, 0, sizeof *s); |
468392fb | 3213 | s->the_bfd = abfd; |
6ba2a415 | 3214 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3215 | s->section = glink; |
3216 | s->value = resolv_vma - glink->vma; | |
3217 | s->name = names; | |
3218 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3219 | names += sizeof ("__glink_PLTresolve"); | |
3220 | s++; | |
3221 | count++; | |
3222 | } | |
3223 | ||
3224 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3225 | stub rather than on the glink branch table entry. The | |
3226 | objdump disassembler would then use a sensible symbol | |
3227 | name on plt calls. The difficulty in doing so is | |
3228 | a) finding the stubs, and, | |
3229 | b) matching stubs against plt entries, and, | |
3230 | c) there can be multiple stubs for a given plt entry. | |
3231 | ||
3232 | Solving (a) could be done by code scanning, but older | |
3233 | ppc64 binaries used different stubs to current code. | |
3234 | (b) is the tricky one since you need to known the toc | |
3235 | pointer for at least one function that uses a pic stub to | |
3236 | be able to calculate the plt address referenced. | |
3237 | (c) means gdb would need to set multiple breakpoints (or | |
3238 | find the glink branch itself) when setting breakpoints | |
3239 | for pending shared library loads. */ | |
3240 | p = relplt->relocation; | |
3241 | for (i = 0; i < plt_count; i++, p++) | |
3242 | { | |
3243 | size_t len; | |
3244 | ||
3245 | *s = **p->sym_ptr_ptr; | |
3246 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3247 | we are defining a symbol, ensure one of them is set. */ | |
3248 | if ((s->flags & BSF_LOCAL) == 0) | |
3249 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3250 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3251 | s->section = glink; |
3252 | s->value = glink_vma - glink->vma; | |
3253 | s->name = names; | |
3254 | s->udata.p = NULL; | |
3255 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3256 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3257 | names += len; | |
e054468f AM |
3258 | if (p->addend != 0) |
3259 | { | |
3260 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3261 | names += sizeof ("+0x") - 1; | |
3262 | bfd_sprintf_vma (abfd, names, p->addend); | |
3263 | names += strlen (names); | |
3264 | } | |
468392fb AM |
3265 | memcpy (names, "@plt", sizeof ("@plt")); |
3266 | names += sizeof ("@plt"); | |
3267 | s++; | |
3268 | glink_vma += 8; | |
3269 | if (i >= 0x8000) | |
3270 | glink_vma += 4; | |
3271 | } | |
3272 | count += plt_count; | |
3273 | } | |
90e3cdf2 JJ |
3274 | } |
3275 | ||
c9727e01 | 3276 | done: |
a7535cf3 | 3277 | free (syms); |
90e3cdf2 JJ |
3278 | return count; |
3279 | } | |
5bd4f169 | 3280 | \f |
65f38f15 AM |
3281 | /* The following functions are specific to the ELF linker, while |
3282 | functions above are used generally. Those named ppc64_elf_* are | |
3283 | called by the main ELF linker code. They appear in this file more | |
3284 | or less in the order in which they are called. eg. | |
3285 | ppc64_elf_check_relocs is called early in the link process, | |
3286 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3287 | called. |
3288 | ||
3289 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3290 | functions have both a function code symbol and a function descriptor | |
3291 | symbol. A call to foo in a relocatable object file looks like: | |
3292 | ||
3293 | . .text | |
3294 | . x: | |
3295 | . bl .foo | |
3296 | . nop | |
3297 | ||
3298 | The function definition in another object file might be: | |
3299 | ||
3300 | . .section .opd | |
3301 | . foo: .quad .foo | |
3302 | . .quad .TOC.@tocbase | |
3303 | . .quad 0 | |
3304 | . | |
3305 | . .text | |
3306 | . .foo: blr | |
3307 | ||
3308 | When the linker resolves the call during a static link, the branch | |
3309 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3310 | If the function definition is in a shared library, things are a little | |
3311 | different: The call goes via a plt call stub, the opd information gets | |
3312 | copied to the plt, and the linker patches the nop. | |
3313 | ||
3314 | . x: | |
3315 | . bl .foo_stub | |
3316 | . ld 2,40(1) | |
3317 | . | |
3318 | . | |
3319 | . .foo_stub: | |
3320 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3321 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3322 | . std 2,40(1) # this is the general idea |
3323 | . ld 11,0(12) | |
3324 | . ld 2,8(12) | |
3325 | . mtctr 11 | |
3326 | . ld 11,16(12) | |
3327 | . bctr | |
3328 | . | |
3329 | . .section .plt | |
3330 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3331 | ||
3332 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3333 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3334 | copying. | |
3335 | ||
3336 | What are the difficulties here? Well, firstly, the relocations | |
3337 | examined by the linker in check_relocs are against the function code | |
3338 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3339 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3340 | to carefully copy dynamic link information from one symbol to the other. | |
3341 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3342 | symbol as is normal for most other backends. We need foo dynamic | |
3343 | instead, at least for an application final link. However, when | |
3344 | creating a shared library containing foo, we need to have both symbols | |
3345 | dynamic so that references to .foo are satisfied during the early | |
3346 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3347 | definition from some other object, eg. a static library. |
3348 | ||
3349 | Update: As of August 2004, we support a new convention. Function | |
3350 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3351 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3352 | |
3353 | /* The linker needs to keep track of the number of relocs that it | |
3354 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3355 | This is so that it can later discard them if they are found to be | |
3356 | unnecessary. We store the information in a field extending the | |
3357 | regular ELF linker hash table. */ | |
3358 | ||
3359 | struct ppc_dyn_relocs | |
3360 | { | |
3361 | struct ppc_dyn_relocs *next; | |
3362 | ||
3363 | /* The input section of the reloc. */ | |
3364 | asection *sec; | |
3365 | ||
3366 | /* Total number of relocs copied for the input section. */ | |
3367 | bfd_size_type count; | |
3368 | ||
3369 | /* Number of pc-relative relocs copied for the input section. */ | |
3370 | bfd_size_type pc_count; | |
3371 | }; | |
3372 | ||
411e1bfb AM |
3373 | /* Track GOT entries needed for a given symbol. We might need more |
3374 | than one got entry per symbol. */ | |
3375 | struct got_entry | |
3376 | { | |
3377 | struct got_entry *next; | |
3378 | ||
e7b938ca | 3379 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3380 | bfd_vma addend; |
3381 | ||
e717da7e AM |
3382 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3383 | symbol referenced from different input files. This is to support | |
3384 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
102890f0 AM |
3385 | from one input file to another. FIXME: After group_sections we |
3386 | ought to merge entries within the group. | |
e717da7e AM |
3387 | |
3388 | Point to the BFD owning this GOT entry. */ | |
3389 | bfd *owner; | |
3390 | ||
3391 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3392 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3393 | char tls_type; | |
3394 | ||
e7b938ca | 3395 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3396 | union |
3397 | { | |
3398 | bfd_signed_vma refcount; | |
3399 | bfd_vma offset; | |
3400 | } got; | |
411e1bfb AM |
3401 | }; |
3402 | ||
3403 | /* The same for PLT. */ | |
3404 | struct plt_entry | |
3405 | { | |
3406 | struct plt_entry *next; | |
3407 | ||
3408 | bfd_vma addend; | |
3409 | ||
3410 | union | |
3411 | { | |
3412 | bfd_signed_vma refcount; | |
3413 | bfd_vma offset; | |
3414 | } plt; | |
3415 | }; | |
3416 | ||
1d483afe | 3417 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3418 | selects those that must be copied when linking a shared library, |
3419 | even when the symbol is local. */ | |
65f38f15 | 3420 | |
1d483afe AM |
3421 | static int |
3422 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3423 | enum elf_ppc64_reloc_type r_type) | |
3424 | { | |
3425 | switch (r_type) | |
3426 | { | |
3427 | default: | |
3428 | return 1; | |
3429 | ||
3430 | case R_PPC64_REL32: | |
3431 | case R_PPC64_REL64: | |
3432 | case R_PPC64_REL30: | |
3433 | return 0; | |
3434 | ||
3435 | case R_PPC64_TPREL16: | |
3436 | case R_PPC64_TPREL16_LO: | |
3437 | case R_PPC64_TPREL16_HI: | |
3438 | case R_PPC64_TPREL16_HA: | |
3439 | case R_PPC64_TPREL16_DS: | |
3440 | case R_PPC64_TPREL16_LO_DS: | |
3441 | case R_PPC64_TPREL16_HIGHER: | |
3442 | case R_PPC64_TPREL16_HIGHERA: | |
3443 | case R_PPC64_TPREL16_HIGHEST: | |
3444 | case R_PPC64_TPREL16_HIGHESTA: | |
3445 | case R_PPC64_TPREL64: | |
3446 | return !info->executable; | |
3447 | } | |
3448 | } | |
65f38f15 | 3449 | |
f4656909 AM |
3450 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3451 | copying dynamic variables from a shared lib into an app's dynbss | |
3452 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3453 | shared lib. With code that gcc generates, it's vital that this be |
3454 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3455 | the address of a function descriptor, which resides in the .opd | |
3456 | section. gcc uses the descriptor directly rather than going via the | |
3457 | GOT as some other ABI's do, which means that initialized function | |
3458 | pointers must reference the descriptor. Thus, a function pointer | |
3459 | initialized to the address of a function in a shared library will | |
3460 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3461 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3462 | presents a problem as a plt entry for that function is also |
3463 | initialized from the function descriptor symbol and the copy reloc | |
3464 | may not be initialized first. */ | |
a23b6845 | 3465 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3466 | |
721956f4 AM |
3467 | /* Section name for stubs is the associated section name plus this |
3468 | string. */ | |
3469 | #define STUB_SUFFIX ".stub" | |
3470 | ||
3471 | /* Linker stubs. | |
3472 | ppc_stub_long_branch: | |
3473 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3474 | destination, but a 24 bit branch in a stub section will reach. | |
3475 | . b dest | |
3476 | ||
3477 | ppc_stub_plt_branch: | |
3478 | Similar to the above, but a 24 bit branch in the stub section won't | |
3479 | reach its destination. | |
87e226ce AM |
3480 | . addis %r12,%r2,xxx@toc@ha |
3481 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3482 | . mtctr %r11 |
3483 | . bctr | |
3484 | ||
3485 | ppc_stub_plt_call: | |
2c66dc6c AM |
3486 | Used to call a function in a shared library. If it so happens that |
3487 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3488 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3489 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3490 | . std %r2,40(%r1) |
87e226ce | 3491 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3492 | . mtctr %r11 |
ac2df442 | 3493 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3494 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3495 | . bctr |
ad8e1ba5 AM |
3496 | |
3497 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3498 | code to adjust the value and save r2 to support multiple toc sections. | |
3499 | A ppc_stub_long_branch with an r2 offset looks like: | |
3500 | . std %r2,40(%r1) | |
3501 | . addis %r2,%r2,off@ha | |
3502 | . addi %r2,%r2,off@l | |
3503 | . b dest | |
3504 | ||
3505 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3506 | . std %r2,40(%r1) | |
3507 | . addis %r12,%r2,xxx@toc@ha | |
3508 | . ld %r11,xxx@toc@l(%r12) | |
3509 | . addis %r2,%r2,off@ha | |
3510 | . addi %r2,%r2,off@l | |
3511 | . mtctr %r11 | |
3512 | . bctr | |
ac2df442 AM |
3513 | |
3514 | In cases where the "addis" instruction would add zero, the "addis" is | |
3515 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3516 | */ |
3517 | ||
3518 | enum ppc_stub_type { | |
3519 | ppc_stub_none, | |
3520 | ppc_stub_long_branch, | |
ad8e1ba5 | 3521 | ppc_stub_long_branch_r2off, |
721956f4 | 3522 | ppc_stub_plt_branch, |
ad8e1ba5 | 3523 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3524 | ppc_stub_plt_call |
3525 | }; | |
3526 | ||
3527 | struct ppc_stub_hash_entry { | |
3528 | ||
3529 | /* Base hash table entry structure. */ | |
3530 | struct bfd_hash_entry root; | |
3531 | ||
ad8e1ba5 AM |
3532 | enum ppc_stub_type stub_type; |
3533 | ||
721956f4 AM |
3534 | /* The stub section. */ |
3535 | asection *stub_sec; | |
3536 | ||
3537 | /* Offset within stub_sec of the beginning of this stub. */ | |
3538 | bfd_vma stub_offset; | |
3539 | ||
3540 | /* Given the symbol's value and its section we can determine its final | |
3541 | value when building the stubs (so the stub knows where to jump. */ | |
3542 | bfd_vma target_value; | |
3543 | asection *target_section; | |
3544 | ||
721956f4 AM |
3545 | /* The symbol table entry, if any, that this was derived from. */ |
3546 | struct ppc_link_hash_entry *h; | |
e054468f | 3547 | struct plt_entry *plt_ent; |
721956f4 | 3548 | |
411e1bfb AM |
3549 | /* And the reloc addend that this was derived from. */ |
3550 | bfd_vma addend; | |
3551 | ||
721956f4 AM |
3552 | /* Where this stub is being called from, or, in the case of combined |
3553 | stub sections, the first input section in the group. */ | |
3554 | asection *id_sec; | |
3555 | }; | |
3556 | ||
3557 | struct ppc_branch_hash_entry { | |
3558 | ||
3559 | /* Base hash table entry structure. */ | |
3560 | struct bfd_hash_entry root; | |
3561 | ||
c456f082 | 3562 | /* Offset within branch lookup table. */ |
721956f4 AM |
3563 | unsigned int offset; |
3564 | ||
3565 | /* Generation marker. */ | |
3566 | unsigned int iter; | |
3567 | }; | |
65f38f15 AM |
3568 | |
3569 | struct ppc_link_hash_entry | |
3570 | { | |
3571 | struct elf_link_hash_entry elf; | |
3572 | ||
b3fac117 AM |
3573 | union { |
3574 | /* A pointer to the most recently used stub hash entry against this | |
3575 | symbol. */ | |
3576 | struct ppc_stub_hash_entry *stub_cache; | |
3577 | ||
3578 | /* A pointer to the next symbol starting with a '.' */ | |
3579 | struct ppc_link_hash_entry *next_dot_sym; | |
3580 | } u; | |
721956f4 | 3581 | |
65f38f15 AM |
3582 | /* Track dynamic relocs copied for this symbol. */ |
3583 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3584 | |
721956f4 | 3585 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3586 | struct ppc_link_hash_entry *oh; |
721956f4 | 3587 | |
e86ce104 AM |
3588 | /* Flag function code and descriptor symbols. */ |
3589 | unsigned int is_func:1; | |
3590 | unsigned int is_func_descriptor:1; | |
908b32fc | 3591 | unsigned int fake:1; |
411e1bfb | 3592 | |
c5614fa4 AM |
3593 | /* Whether global opd/toc sym has been adjusted or not. |
3594 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3595 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3596 | unsigned int adjust_done:1; |
3597 | ||
99877b66 AM |
3598 | /* Set if we twiddled this symbol to weak at some stage. */ |
3599 | unsigned int was_undefined:1; | |
3600 | ||
411e1bfb | 3601 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3602 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3603 | corresponding relocs are encountered during check_relocs. | |
3604 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3605 | indicate the corresponding GOT entry type is not needed. | |
3606 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3607 | a TPREL one. We use a separate flag rather than setting TPREL | |
3608 | just for convenience in distinguishing the two cases. */ | |
3609 | #define TLS_GD 1 /* GD reloc. */ | |
3610 | #define TLS_LD 2 /* LD reloc. */ | |
3611 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3612 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3613 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3614 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3615 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3616 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
e7b938ca | 3617 | char tls_mask; |
65f38f15 AM |
3618 | }; |
3619 | ||
3620 | /* ppc64 ELF linker hash table. */ | |
3621 | ||
3622 | struct ppc_link_hash_table | |
3623 | { | |
3624 | struct elf_link_hash_table elf; | |
3625 | ||
721956f4 AM |
3626 | /* The stub hash table. */ |
3627 | struct bfd_hash_table stub_hash_table; | |
3628 | ||
3629 | /* Another hash table for plt_branch stubs. */ | |
3630 | struct bfd_hash_table branch_hash_table; | |
3631 | ||
3632 | /* Linker stub bfd. */ | |
3633 | bfd *stub_bfd; | |
3634 | ||
3635 | /* Linker call-backs. */ | |
4ce794b7 AM |
3636 | asection * (*add_stub_section) (const char *, asection *); |
3637 | void (*layout_sections_again) (void); | |
721956f4 AM |
3638 | |
3639 | /* Array to keep track of which stub sections have been created, and | |
3640 | information on stub grouping. */ | |
3641 | struct map_stub { | |
3642 | /* This is the section to which stubs in the group will be attached. */ | |
3643 | asection *link_sec; | |
3644 | /* The stub section. */ | |
3645 | asection *stub_sec; | |
ad8e1ba5 AM |
3646 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3647 | bfd_vma toc_off; | |
721956f4 AM |
3648 | } *stub_group; |
3649 | ||
ad8e1ba5 AM |
3650 | /* Temp used when calculating TOC pointers. */ |
3651 | bfd_vma toc_curr; | |
3652 | ||
8f3bab57 AM |
3653 | /* Highest input section id. */ |
3654 | int top_id; | |
3655 | ||
734b6cf9 AM |
3656 | /* Highest output section index. */ |
3657 | int top_index; | |
3658 | ||
b3fac117 AM |
3659 | /* Used when adding symbols. */ |
3660 | struct ppc_link_hash_entry *dot_syms; | |
3661 | ||
734b6cf9 AM |
3662 | /* List of input sections for each output section. */ |
3663 | asection **input_list; | |
721956f4 | 3664 | |
65f38f15 | 3665 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3666 | asection *got; |
4ce794b7 AM |
3667 | asection *plt; |
3668 | asection *relplt; | |
e054468f AM |
3669 | asection *iplt; |
3670 | asection *reliplt; | |
4ce794b7 AM |
3671 | asection *dynbss; |
3672 | asection *relbss; | |
3673 | asection *glink; | |
82bd7b59 | 3674 | asection *sfpr; |
4ce794b7 AM |
3675 | asection *brlt; |
3676 | asection *relbrlt; | |
ec338859 | 3677 | |
8387904d AM |
3678 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3679 | struct ppc_link_hash_entry *tls_get_addr; | |
3680 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3681 | |
9b5ecbd0 AM |
3682 | /* Statistics. */ |
3683 | unsigned long stub_count[ppc_stub_plt_call]; | |
3684 | ||
ee75fd95 AM |
3685 | /* Number of stubs against global syms. */ |
3686 | unsigned long stub_globals; | |
3687 | ||
ad8e1ba5 | 3688 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3689 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3690 | |
4c52953f AM |
3691 | /* Support for multiple toc sections. */ |
3692 | unsigned int no_multi_toc:1; | |
3693 | unsigned int multi_toc_needed:1; | |
3694 | ||
5d1634d7 | 3695 | /* Set on error. */ |
99877b66 | 3696 | unsigned int stub_error:1; |
721956f4 | 3697 | |
7d9616d7 | 3698 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3699 | unsigned int twiddled_syms:1; |
721956f4 AM |
3700 | |
3701 | /* Incremented every time we size stubs. */ | |
3702 | unsigned int stub_iteration; | |
5d1634d7 | 3703 | |
87d72d41 AM |
3704 | /* Small local sym cache. */ |
3705 | struct sym_cache sym_cache; | |
65f38f15 AM |
3706 | }; |
3707 | ||
4c52953f AM |
3708 | /* Rename some of the generic section flags to better document how they |
3709 | are used here. */ | |
3710 | #define has_toc_reloc has_gp_reloc | |
3711 | #define makes_toc_func_call need_finalize_relax | |
3712 | #define call_check_in_progress reloc_done | |
3713 | ||
65f38f15 AM |
3714 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3715 | ||
3716 | #define ppc_hash_table(p) \ | |
3717 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3718 | ||
721956f4 AM |
3719 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3720 | ((struct ppc_stub_hash_entry *) \ | |
3721 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3722 | ||
3723 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3724 | ((struct ppc_branch_hash_entry *) \ | |
3725 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3726 | ||
3727 | /* Create an entry in the stub hash table. */ | |
3728 | ||
3729 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3730 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3731 | struct bfd_hash_table *table, | |
3732 | const char *string) | |
721956f4 AM |
3733 | { |
3734 | /* Allocate the structure if it has not already been allocated by a | |
3735 | subclass. */ | |
3736 | if (entry == NULL) | |
3737 | { | |
3738 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3739 | if (entry == NULL) | |
3740 | return entry; | |
3741 | } | |
3742 | ||
3743 | /* Call the allocation method of the superclass. */ | |
3744 | entry = bfd_hash_newfunc (entry, table, string); | |
3745 | if (entry != NULL) | |
3746 | { | |
3747 | struct ppc_stub_hash_entry *eh; | |
3748 | ||
3749 | /* Initialize the local fields. */ | |
3750 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3751 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3752 | eh->stub_sec = NULL; |
3753 | eh->stub_offset = 0; | |
3754 | eh->target_value = 0; | |
3755 | eh->target_section = NULL; | |
721956f4 AM |
3756 | eh->h = NULL; |
3757 | eh->id_sec = NULL; | |
3758 | } | |
3759 | ||
3760 | return entry; | |
3761 | } | |
3762 | ||
3763 | /* Create an entry in the branch hash table. */ | |
3764 | ||
3765 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3766 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3767 | struct bfd_hash_table *table, | |
3768 | const char *string) | |
721956f4 AM |
3769 | { |
3770 | /* Allocate the structure if it has not already been allocated by a | |
3771 | subclass. */ | |
3772 | if (entry == NULL) | |
3773 | { | |
3774 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3775 | if (entry == NULL) | |
3776 | return entry; | |
3777 | } | |
3778 | ||
3779 | /* Call the allocation method of the superclass. */ | |
3780 | entry = bfd_hash_newfunc (entry, table, string); | |
3781 | if (entry != NULL) | |
3782 | { | |
3783 | struct ppc_branch_hash_entry *eh; | |
3784 | ||
3785 | /* Initialize the local fields. */ | |
3786 | eh = (struct ppc_branch_hash_entry *) entry; | |
3787 | eh->offset = 0; | |
3788 | eh->iter = 0; | |
3789 | } | |
3790 | ||
3791 | return entry; | |
3792 | } | |
3793 | ||
65f38f15 AM |
3794 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3795 | ||
3796 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3797 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3798 | struct bfd_hash_table *table, | |
3799 | const char *string) | |
65f38f15 AM |
3800 | { |
3801 | /* Allocate the structure if it has not already been allocated by a | |
3802 | subclass. */ | |
3803 | if (entry == NULL) | |
3804 | { | |
3805 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3806 | if (entry == NULL) | |
3807 | return entry; | |
3808 | } | |
3809 | ||
3810 | /* Call the allocation method of the superclass. */ | |
3811 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3812 | if (entry != NULL) | |
3813 | { | |
3814 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3815 | ||
b3fac117 | 3816 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3817 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3818 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3819 | ||
3820 | /* When making function calls, old ABI code references function entry | |
3821 | points (dot symbols), while new ABI code references the function | |
3822 | descriptor symbol. We need to make any combination of reference and | |
3823 | definition work together, without breaking archive linking. | |
3824 | ||
3825 | For a defined function "foo" and an undefined call to "bar": | |
3826 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3827 | "bar" too). | |
3828 | A new object defines "foo" and references "bar". | |
3829 | ||
3830 | A new object thus has no problem with its undefined symbols being | |
3831 | satisfied by definitions in an old object. On the other hand, the | |
3832 | old object won't have ".bar" satisfied by a new object. | |
3833 | ||
3834 | Keep a list of newly added dot-symbols. */ | |
3835 | ||
3836 | if (string[0] == '.') | |
3837 | { | |
3838 | struct ppc_link_hash_table *htab; | |
3839 | ||
3840 | htab = (struct ppc_link_hash_table *) table; | |
3841 | eh->u.next_dot_sym = htab->dot_syms; | |
3842 | htab->dot_syms = eh; | |
3843 | } | |
65f38f15 AM |
3844 | } |
3845 | ||
3846 | return entry; | |
3847 | } | |
3848 | ||
3849 | /* Create a ppc64 ELF linker hash table. */ | |
3850 | ||
3851 | static struct bfd_link_hash_table * | |
4ce794b7 | 3852 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3853 | { |
3854 | struct ppc_link_hash_table *htab; | |
3855 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3856 | ||
4ce794b7 | 3857 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3858 | if (htab == NULL) |
3859 | return NULL; | |
3860 | ||
66eb6687 AM |
3861 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3862 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3863 | { |
e2d34d7d | 3864 | free (htab); |
65f38f15 AM |
3865 | return NULL; |
3866 | } | |
3867 | ||
721956f4 | 3868 | /* Init the stub hash table too. */ |
66eb6687 AM |
3869 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3870 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3871 | return NULL; |
3872 | ||
3873 | /* And the branch hash table. */ | |
66eb6687 AM |
3874 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3875 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3876 | return NULL; |
3877 | ||
3254fd24 AM |
3878 | /* Initializing two fields of the union is just cosmetic. We really |
3879 | only care about glist, but when compiled on a 32-bit host the | |
3880 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3881 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3882 | htab->elf.init_got_refcount.refcount = 0; |
3883 | htab->elf.init_got_refcount.glist = NULL; | |
3884 | htab->elf.init_plt_refcount.refcount = 0; | |
3885 | htab->elf.init_plt_refcount.glist = NULL; | |
3886 | htab->elf.init_got_offset.offset = 0; | |
3887 | htab->elf.init_got_offset.glist = NULL; | |
3888 | htab->elf.init_plt_offset.offset = 0; | |
3889 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3890 | |
65f38f15 AM |
3891 | return &htab->elf.root; |
3892 | } | |
3893 | ||
721956f4 AM |
3894 | /* Free the derived linker hash table. */ |
3895 | ||
3896 | static void | |
4ce794b7 | 3897 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3898 | { |
3899 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3900 | ||
3901 | bfd_hash_table_free (&ret->stub_hash_table); | |
3902 | bfd_hash_table_free (&ret->branch_hash_table); | |
3903 | _bfd_generic_link_hash_table_free (hash); | |
3904 | } | |
3905 | ||
e717da7e AM |
3906 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3907 | ||
3908 | void | |
3909 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3910 | { | |
3911 | struct ppc_link_hash_table *htab; | |
3912 | ||
3913 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3914 | ||
3915 | /* Always hook our dynamic sections into the first bfd, which is the | |
3916 | linker created stub bfd. This ensures that the GOT header is at | |
3917 | the start of the output TOC section. */ | |
3918 | htab = ppc_hash_table (info); | |
3919 | htab->stub_bfd = abfd; | |
3920 | htab->elf.dynobj = abfd; | |
3921 | } | |
3922 | ||
721956f4 AM |
3923 | /* Build a name for an entry in the stub hash table. */ |
3924 | ||
3925 | static char * | |
4ce794b7 AM |
3926 | ppc_stub_name (const asection *input_section, |
3927 | const asection *sym_sec, | |
3928 | const struct ppc_link_hash_entry *h, | |
3929 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3930 | { |
3931 | char *stub_name; | |
3932 | bfd_size_type len; | |
3933 | ||
3934 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3935 | offsets from a sym as a branch target? In fact, we could | |
3936 | probably assume the addend is always zero. */ | |
3937 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3938 | ||
3939 | if (h) | |
3940 | { | |
3941 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3942 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3943 | if (stub_name == NULL) |
3944 | return stub_name; | |
3945 | ||
3946 | sprintf (stub_name, "%08x.%s+%x", | |
3947 | input_section->id & 0xffffffff, | |
3948 | h->elf.root.root.string, | |
3949 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3950 | } |
3951 | else | |
3952 | { | |
ad8e1ba5 | 3953 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3954 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3955 | if (stub_name == NULL) |
3956 | return stub_name; | |
3957 | ||
3958 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3959 | input_section->id & 0xffffffff, | |
3960 | sym_sec->id & 0xffffffff, | |
3961 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3962 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3963 | } |
ee75fd95 AM |
3964 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3965 | stub_name[len - 2] = 0; | |
721956f4 AM |
3966 | return stub_name; |
3967 | } | |
3968 | ||
3969 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3970 | creating the stub name takes a bit of time. */ | |
3971 | ||
3972 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3973 | ppc_get_stub_entry (const asection *input_section, |
3974 | const asection *sym_sec, | |
039b3fef | 3975 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3976 | const Elf_Internal_Rela *rel, |
3977 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3978 | { |
3979 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3980 | const asection *id_sec; |
3981 | ||
3982 | /* If this input section is part of a group of sections sharing one | |
3983 | stub section, then use the id of the first section in the group. | |
3984 | Stub names need to include a section id, as there may well be | |
3985 | more than one stub used to reach say, printf, and we need to | |
3986 | distinguish between them. */ | |
3987 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3988 | ||
b3fac117 AM |
3989 | if (h != NULL && h->u.stub_cache != NULL |
3990 | && h->u.stub_cache->h == h | |
3991 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3992 | { |
b3fac117 | 3993 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3994 | } |
3995 | else | |
3996 | { | |
3997 | char *stub_name; | |
3998 | ||
3999 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4000 | if (stub_name == NULL) | |
4001 | return NULL; | |
4002 | ||
4003 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4004 | stub_name, FALSE, FALSE); |
721956f4 | 4005 | if (h != NULL) |
b3fac117 | 4006 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4007 | |
4008 | free (stub_name); | |
4009 | } | |
4010 | ||
4011 | return stub_entry; | |
4012 | } | |
4013 | ||
4014 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4015 | stub entry are initialised. */ | |
4016 | ||
4017 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4018 | ppc_add_stub (const char *stub_name, |
4019 | asection *section, | |
4020 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4021 | { |
4022 | asection *link_sec; | |
4023 | asection *stub_sec; | |
4024 | struct ppc_stub_hash_entry *stub_entry; | |
4025 | ||
4026 | link_sec = htab->stub_group[section->id].link_sec; | |
4027 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4028 | if (stub_sec == NULL) | |
4029 | { | |
4030 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4031 | if (stub_sec == NULL) | |
4032 | { | |
d4c88bbb | 4033 | size_t namelen; |
721956f4 AM |
4034 | bfd_size_type len; |
4035 | char *s_name; | |
4036 | ||
d4c88bbb AM |
4037 | namelen = strlen (link_sec->name); |
4038 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4039 | s_name = bfd_alloc (htab->stub_bfd, len); |
4040 | if (s_name == NULL) | |
4041 | return NULL; | |
4042 | ||
d4c88bbb AM |
4043 | memcpy (s_name, link_sec->name, namelen); |
4044 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4045 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4046 | if (stub_sec == NULL) | |
4047 | return NULL; | |
4048 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4049 | } | |
4050 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4051 | } | |
4052 | ||
4053 | /* Enter this entry into the linker stub hash table. */ | |
4054 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4055 | TRUE, FALSE); |
721956f4 AM |
4056 | if (stub_entry == NULL) |
4057 | { | |
d003868e AM |
4058 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
4059 | section->owner, stub_name); | |
721956f4 AM |
4060 | return NULL; |
4061 | } | |
4062 | ||
4063 | stub_entry->stub_sec = stub_sec; | |
4064 | stub_entry->stub_offset = 0; | |
4065 | stub_entry->id_sec = link_sec; | |
4066 | return stub_entry; | |
4067 | } | |
4068 | ||
82bd7b59 AM |
4069 | /* Create sections for linker generated code. */ |
4070 | ||
b34976b6 | 4071 | static bfd_boolean |
4ce794b7 | 4072 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
4073 | { |
4074 | struct ppc_link_hash_table *htab; | |
4075 | flagword flags; | |
4076 | ||
4077 | htab = ppc_hash_table (info); | |
4078 | ||
4079 | /* Create .sfpr for code to save and restore fp regs. */ | |
4080 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4081 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
4082 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
4083 | flags); | |
82bd7b59 | 4084 | if (htab->sfpr == NULL |
82bd7b59 | 4085 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 4086 | return FALSE; |
82bd7b59 | 4087 | |
721956f4 | 4088 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
4089 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
4090 | flags); | |
4ce794b7 | 4091 | if (htab->glink == NULL |
ee4bf8d2 | 4092 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 4093 | return FALSE; |
82bd7b59 | 4094 | |
e054468f AM |
4095 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
4096 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
4097 | if (htab->iplt == NULL | |
4098 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
4099 | return FALSE; | |
4100 | ||
4101 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4102 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4103 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
4104 | ".rela.iplt", | |
4105 | flags); | |
4106 | if (htab->reliplt == NULL | |
4107 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
4108 | return FALSE; | |
4109 | ||
c456f082 | 4110 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
4111 | flags = (SEC_ALLOC | SEC_LOAD |
4112 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4113 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4114 | flags); | |
4ce794b7 | 4115 | if (htab->brlt == NULL |
4ce794b7 | 4116 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 4117 | return FALSE; |
721956f4 | 4118 | |
e4e0193e | 4119 | if (!info->shared) |
c456f082 AM |
4120 | return TRUE; |
4121 | ||
e4e0193e AM |
4122 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
4123 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4124 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4125 | ".rela.branch_lt", | |
4126 | flags); | |
e054468f | 4127 | if (htab->relbrlt == NULL |
c456f082 AM |
4128 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
4129 | return FALSE; | |
4130 | ||
b34976b6 | 4131 | return TRUE; |
82bd7b59 AM |
4132 | } |
4133 | ||
e717da7e AM |
4134 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4135 | not already done. */ | |
65f38f15 | 4136 | |
b34976b6 | 4137 | static bfd_boolean |
e717da7e | 4138 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4139 | { |
e717da7e AM |
4140 | asection *got, *relgot; |
4141 | flagword flags; | |
4142 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4143 | |
0c8d6e5c | 4144 | if (!is_ppc64_elf (abfd)) |
0ffa91dd NC |
4145 | return FALSE; |
4146 | ||
4ce794b7 | 4147 | if (!htab->got) |
e717da7e AM |
4148 | { |
4149 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4150 | return FALSE; | |
4151 | ||
4152 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
4153 | if (!htab->got) | |
4154 | abort (); | |
4155 | } | |
4156 | ||
4157 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4158 | | SEC_LINKER_CREATED); | |
4159 | ||
c456f082 | 4160 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4161 | if (!got |
e717da7e AM |
4162 | || !bfd_set_section_alignment (abfd, got, 3)) |
4163 | return FALSE; | |
65f38f15 | 4164 | |
c456f082 AM |
4165 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4166 | flags | SEC_READONLY); | |
e717da7e | 4167 | if (!relgot |
e717da7e | 4168 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4169 | return FALSE; |
e717da7e AM |
4170 | |
4171 | ppc64_elf_tdata (abfd)->got = got; | |
4172 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4173 | return TRUE; |
65f38f15 | 4174 | } |
5bd4f169 | 4175 | |
82bd7b59 | 4176 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4177 | |
b34976b6 | 4178 | static bfd_boolean |
4ce794b7 | 4179 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4180 | { |
65f38f15 | 4181 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4182 | |
65f38f15 | 4183 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4184 | return FALSE; |
65f38f15 | 4185 | |
e717da7e AM |
4186 | htab = ppc_hash_table (info); |
4187 | if (!htab->got) | |
4188 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
4189 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
4190 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4191 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 4192 | if (!info->shared) |
4ce794b7 | 4193 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 4194 | |
e717da7e | 4195 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4196 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4197 | abort (); |
4198 | ||
b34976b6 | 4199 | return TRUE; |
5bd4f169 AM |
4200 | } |
4201 | ||
40d16e0b AM |
4202 | /* Merge PLT info on FROM with that on TO. */ |
4203 | ||
4204 | static void | |
4205 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4206 | struct ppc_link_hash_entry *to) | |
4207 | { | |
4208 | if (from->elf.plt.plist != NULL) | |
4209 | { | |
4210 | if (to->elf.plt.plist != NULL) | |
4211 | { | |
4212 | struct plt_entry **entp; | |
4213 | struct plt_entry *ent; | |
4214 | ||
4215 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4216 | { | |
4217 | struct plt_entry *dent; | |
4218 | ||
4219 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4220 | if (dent->addend == ent->addend) | |
4221 | { | |
4222 | dent->plt.refcount += ent->plt.refcount; | |
4223 | *entp = ent->next; | |
4224 | break; | |
4225 | } | |
4226 | if (dent == NULL) | |
4227 | entp = &ent->next; | |
4228 | } | |
4229 | *entp = to->elf.plt.plist; | |
4230 | } | |
4231 | ||
4232 | to->elf.plt.plist = from->elf.plt.plist; | |
4233 | from->elf.plt.plist = NULL; | |
4234 | } | |
4235 | } | |
4236 | ||
65f38f15 AM |
4237 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4238 | ||
4239 | static void | |
fcfa13d2 AM |
4240 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4241 | struct elf_link_hash_entry *dir, | |
4242 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4243 | { |
4244 | struct ppc_link_hash_entry *edir, *eind; | |
4245 | ||
4246 | edir = (struct ppc_link_hash_entry *) dir; | |
4247 | eind = (struct ppc_link_hash_entry *) ind; | |
4248 | ||
411e1bfb | 4249 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4250 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4251 | { |
bbd7ec4a AM |
4252 | if (edir->dyn_relocs != NULL) |
4253 | { | |
4254 | struct ppc_dyn_relocs **pp; | |
4255 | struct ppc_dyn_relocs *p; | |
4256 | ||
fcfa13d2 | 4257 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4258 | list. Merge any entries against the same section. */ |
4259 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4260 | { | |
4261 | struct ppc_dyn_relocs *q; | |
4262 | ||
4263 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4264 | if (q->sec == p->sec) | |
4265 | { | |
4266 | q->pc_count += p->pc_count; | |
4267 | q->count += p->count; | |
4268 | *pp = p->next; | |
4269 | break; | |
4270 | } | |
4271 | if (q == NULL) | |
4272 | pp = &p->next; | |
4273 | } | |
4274 | *pp = edir->dyn_relocs; | |
4275 | } | |
4276 | ||
65f38f15 AM |
4277 | edir->dyn_relocs = eind->dyn_relocs; |
4278 | eind->dyn_relocs = NULL; | |
4279 | } | |
65f38f15 | 4280 | |
6349e628 AM |
4281 | edir->is_func |= eind->is_func; |
4282 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4283 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4284 | |
81848ca0 | 4285 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4286 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4287 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4288 | if (!(ELIMINATE_COPY_RELOCS |
4289 | && eind->elf.root.type != bfd_link_hash_indirect | |
4290 | && edir->elf.dynamic_adjusted)) | |
4291 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4292 | |
f5385ebf AM |
4293 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4294 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4295 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4296 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4297 | |
4298 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4299 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4300 | return; | |
4301 | ||
81848ca0 AM |
4302 | /* Copy over got entries that we may have already seen to the |
4303 | symbol which just became indirect. */ | |
411e1bfb AM |
4304 | if (eind->elf.got.glist != NULL) |
4305 | { | |
4306 | if (edir->elf.got.glist != NULL) | |
4307 | { | |
4308 | struct got_entry **entp; | |
4309 | struct got_entry *ent; | |
4310 | ||
4311 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4312 | { | |
4313 | struct got_entry *dent; | |
4314 | ||
4315 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4316 | if (dent->addend == ent->addend | |
e717da7e | 4317 | && dent->owner == ent->owner |
411e1bfb AM |
4318 | && dent->tls_type == ent->tls_type) |
4319 | { | |
4320 | dent->got.refcount += ent->got.refcount; | |
4321 | *entp = ent->next; | |
4322 | break; | |
4323 | } | |
4324 | if (dent == NULL) | |
4325 | entp = &ent->next; | |
4326 | } | |
4327 | *entp = edir->elf.got.glist; | |
4328 | } | |
4329 | ||
4330 | edir->elf.got.glist = eind->elf.got.glist; | |
4331 | eind->elf.got.glist = NULL; | |
4332 | } | |
4333 | ||
4334 | /* And plt entries. */ | |
40d16e0b | 4335 | move_plt_plist (eind, edir); |
411e1bfb | 4336 | |
fcfa13d2 | 4337 | if (eind->elf.dynindx != -1) |
411e1bfb | 4338 | { |
fcfa13d2 AM |
4339 | if (edir->elf.dynindx != -1) |
4340 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4341 | edir->elf.dynstr_index); | |
411e1bfb AM |
4342 | edir->elf.dynindx = eind->elf.dynindx; |
4343 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4344 | eind->elf.dynindx = -1; | |
4345 | eind->elf.dynstr_index = 0; | |
4346 | } | |
411e1bfb AM |
4347 | } |
4348 | ||
8387904d AM |
4349 | /* Find the function descriptor hash entry from the given function code |
4350 | hash entry FH. Link the entries via their OH fields. */ | |
4351 | ||
4352 | static struct ppc_link_hash_entry * | |
4353 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4354 | { | |
4355 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4356 | ||
4357 | if (fdh == NULL) | |
4358 | { | |
4359 | const char *fd_name = fh->elf.root.root.string + 1; | |
4360 | ||
4361 | fdh = (struct ppc_link_hash_entry *) | |
4362 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4363 | if (fdh != NULL) | |
4364 | { | |
4365 | fdh->is_func_descriptor = 1; | |
4366 | fdh->oh = fh; | |
4367 | fh->is_func = 1; | |
4368 | fh->oh = fdh; | |
4369 | } | |
4370 | } | |
4371 | ||
4372 | return fdh; | |
4373 | } | |
4374 | ||
bb700d78 AM |
4375 | /* Make a fake function descriptor sym for the code sym FH. */ |
4376 | ||
4377 | static struct ppc_link_hash_entry * | |
4378 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4379 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4380 | { |
4381 | bfd *abfd; | |
4382 | asymbol *newsym; | |
4383 | struct bfd_link_hash_entry *bh; | |
4384 | struct ppc_link_hash_entry *fdh; | |
4385 | ||
4386 | abfd = fh->elf.root.u.undef.abfd; | |
4387 | newsym = bfd_make_empty_symbol (abfd); | |
4388 | newsym->name = fh->elf.root.root.string + 1; | |
4389 | newsym->section = bfd_und_section_ptr; | |
4390 | newsym->value = 0; | |
908b32fc | 4391 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4392 | |
4393 | bh = NULL; | |
4394 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4395 | newsym->flags, newsym->section, | |
4396 | newsym->value, NULL, FALSE, FALSE, | |
4397 | &bh)) | |
4398 | return NULL; | |
4399 | ||
4400 | fdh = (struct ppc_link_hash_entry *) bh; | |
4401 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4402 | fdh->fake = 1; |
4403 | fdh->is_func_descriptor = 1; | |
4404 | fdh->oh = fh; | |
4405 | fh->is_func = 1; | |
4406 | fh->oh = fdh; | |
bb700d78 AM |
4407 | return fdh; |
4408 | } | |
4409 | ||
8387904d AM |
4410 | /* Fix function descriptor symbols defined in .opd sections to be |
4411 | function type. */ | |
555cd476 AM |
4412 | |
4413 | static bfd_boolean | |
b3fac117 | 4414 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
e054468f | 4415 | struct bfd_link_info *info, |
555cd476 | 4416 | Elf_Internal_Sym *isym, |
b3fac117 | 4417 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4418 | flagword *flags ATTRIBUTE_UNUSED, |
4419 | asection **sec, | |
4420 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4421 | { | |
e054468f AM |
4422 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
4423 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
4424 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
4425 | ; | |
4426 | else if (*sec != NULL | |
4427 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4428 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4429 | |
555cd476 AM |
4430 | return TRUE; |
4431 | } | |
4432 | ||
8387904d | 4433 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4434 | inclusion of a new ABI object archive that defines "bar". |
4435 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4436 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4437 | |
4438 | static struct elf_link_hash_entry * | |
4439 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4440 | struct bfd_link_info *info, | |
4441 | const char *name) | |
4442 | { | |
4443 | struct elf_link_hash_entry *h; | |
4444 | char *dot_name; | |
4445 | size_t len; | |
4446 | ||
4447 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4448 | if (h != NULL |
4449 | /* Don't return this sym if it is a fake function descriptor | |
4450 | created by add_symbol_adjust. */ | |
4451 | && !(h->root.type == bfd_link_hash_undefweak | |
4452 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4453 | return h; |
4454 | ||
4455 | if (name[0] == '.') | |
4456 | return h; | |
4457 | ||
4458 | len = strlen (name); | |
4459 | dot_name = bfd_alloc (abfd, len + 2); | |
4460 | if (dot_name == NULL) | |
4461 | return (struct elf_link_hash_entry *) 0 - 1; | |
4462 | dot_name[0] = '.'; | |
4463 | memcpy (dot_name + 1, name, len + 1); | |
4464 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4465 | bfd_release (abfd, dot_name); | |
4466 | return h; | |
4467 | } | |
4468 | ||
4469 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4470 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4471 | are made weak. This stops later archive searches from including an | |
4472 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4473 | prevents the linker complaining about undefined symbols. |
4474 | We also check and correct mismatched symbol visibility here. The | |
4475 | most restrictive visibility of the function descriptor and the | |
4476 | function entry symbol is used. */ | |
8387904d AM |
4477 | |
4478 | static bfd_boolean | |
b3fac117 | 4479 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4480 | { |
8387904d AM |
4481 | struct ppc_link_hash_table *htab; |
4482 | struct ppc_link_hash_entry *fdh; | |
4483 | ||
b3fac117 | 4484 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4485 | return TRUE; |
4486 | ||
b3fac117 AM |
4487 | if (eh->elf.root.type == bfd_link_hash_warning) |
4488 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4489 | |
b3fac117 AM |
4490 | if (eh->elf.root.root.string[0] != '.') |
4491 | abort (); | |
8387904d | 4492 | |
b3fac117 | 4493 | htab = ppc_hash_table (info); |
99877b66 | 4494 | fdh = get_fdh (eh, htab); |
bb700d78 | 4495 | if (fdh == NULL |
b3fac117 | 4496 | && !info->relocatable |
bb700d78 AM |
4497 | && (eh->elf.root.type == bfd_link_hash_undefined |
4498 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4499 | && eh->elf.ref_regular) | |
4500 | { | |
4501 | /* Make an undefweak function descriptor sym, which is enough to | |
4502 | pull in an --as-needed shared lib, but won't cause link | |
4503 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4504 | fdh = make_fdh (info, eh); |
bb700d78 | 4505 | if (fdh == NULL) |
b3fac117 | 4506 | return FALSE; |
bb700d78 AM |
4507 | else |
4508 | fdh->elf.ref_regular = 1; | |
4509 | } | |
e87d886e | 4510 | else if (fdh != NULL) |
8387904d | 4511 | { |
35b0ce59 AM |
4512 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4513 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4514 | if (entry_vis < descr_vis) | |
4515 | fdh->elf.other += entry_vis - descr_vis; | |
4516 | else if (entry_vis > descr_vis) | |
4517 | eh->elf.other += descr_vis - entry_vis; | |
4518 | ||
e87d886e AM |
4519 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4520 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4521 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4522 | { |
4523 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4524 | eh->was_undefined = 1; | |
4525 | htab->twiddled_syms = 1; | |
4526 | } | |
8387904d | 4527 | } |
99877b66 | 4528 | |
8387904d AM |
4529 | return TRUE; |
4530 | } | |
4531 | ||
b3fac117 AM |
4532 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4533 | ||
8387904d | 4534 | static bfd_boolean |
7d9616d7 | 4535 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4536 | { |
99877b66 | 4537 | struct ppc_link_hash_table *htab; |
b3fac117 | 4538 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4539 | |
99877b66 | 4540 | htab = ppc_hash_table (info); |
0c8d6e5c | 4541 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 AM |
4542 | return TRUE; |
4543 | ||
0c8d6e5c | 4544 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4545 | { |
4546 | p = &htab->dot_syms; | |
4547 | while ((eh = *p) != NULL) | |
4548 | { | |
4549 | *p = NULL; | |
4550 | if (!add_symbol_adjust (eh, info)) | |
4551 | return FALSE; | |
4552 | p = &eh->u.next_dot_sym; | |
4553 | } | |
4554 | } | |
4555 | ||
4556 | /* Clear the list for non-ppc64 input files. */ | |
4557 | p = &htab->dot_syms; | |
4558 | while ((eh = *p) != NULL) | |
4559 | { | |
4560 | *p = NULL; | |
4561 | p = &eh->u.next_dot_sym; | |
4562 | } | |
99877b66 AM |
4563 | |
4564 | /* We need to fix the undefs list for any syms we have twiddled to | |
4565 | undef_weak. */ | |
4566 | if (htab->twiddled_syms) | |
4567 | { | |
77cfaee6 | 4568 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4569 | htab->twiddled_syms = 0; |
4570 | } | |
b3fac117 | 4571 | return TRUE; |
8387904d AM |
4572 | } |
4573 | ||
97fed1c9 JJ |
4574 | /* Undo hash table changes when an --as-needed input file is determined |
4575 | not to be needed. */ | |
4576 | ||
4577 | static bfd_boolean | |
4578 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4579 | struct bfd_link_info *info) | |
4580 | { | |
4581 | ppc_hash_table (info)->dot_syms = NULL; | |
4582 | return TRUE; | |
4583 | } | |
4584 | ||
e054468f | 4585 | static struct plt_entry ** |
4ce794b7 AM |
4586 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4587 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4588 | { |
4589 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4590 | struct plt_entry **local_plt; |
e7b938ca | 4591 | char *local_got_tls_masks; |
411e1bfb AM |
4592 | |
4593 | if (local_got_ents == NULL) | |
4594 | { | |
4595 | bfd_size_type size = symtab_hdr->sh_info; | |
4596 | ||
e054468f AM |
4597 | size *= (sizeof (*local_got_ents) |
4598 | + sizeof (*local_plt) | |
4599 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4600 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4601 | if (local_got_ents == NULL) |
e054468f | 4602 | return NULL; |
411e1bfb AM |
4603 | elf_local_got_ents (abfd) = local_got_ents; |
4604 | } | |
4605 | ||
e054468f | 4606 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4607 | { |
4608 | struct got_entry *ent; | |
4609 | ||
4610 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4611 | if (ent->addend == r_addend |
4612 | && ent->owner == abfd | |
4613 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4614 | break; |
4615 | if (ent == NULL) | |
4616 | { | |
4617 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4618 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4619 | if (ent == NULL) |
4620 | return FALSE; | |
4621 | ent->next = local_got_ents[r_symndx]; | |
4622 | ent->addend = r_addend; | |
e717da7e | 4623 | ent->owner = abfd; |
411e1bfb AM |
4624 | ent->tls_type = tls_type; |
4625 | ent->got.refcount = 0; | |
4626 | local_got_ents[r_symndx] = ent; | |
4627 | } | |
4628 | ent->got.refcount += 1; | |
4629 | } | |
4630 | ||
e054468f AM |
4631 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
4632 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
e7b938ca | 4633 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
4634 | |
4635 | return local_plt + r_symndx; | |
65f38f15 AM |
4636 | } |
4637 | ||
411e1bfb | 4638 | static bfd_boolean |
e054468f | 4639 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4640 | { |
411e1bfb | 4641 | struct plt_entry *ent; |
1e2f5b6e | 4642 | |
e054468f | 4643 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4644 | if (ent->addend == addend) |
4645 | break; | |
4646 | if (ent == NULL) | |
1e2f5b6e | 4647 | { |
411e1bfb | 4648 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4649 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4650 | if (ent == NULL) |
4651 | return FALSE; | |
e054468f | 4652 | ent->next = *plist; |
411e1bfb AM |
4653 | ent->addend = addend; |
4654 | ent->plt.refcount = 0; | |
e054468f | 4655 | *plist = ent; |
1e2f5b6e | 4656 | } |
411e1bfb | 4657 | ent->plt.refcount += 1; |
b34976b6 | 4658 | return TRUE; |
1e2f5b6e AM |
4659 | } |
4660 | ||
e054468f AM |
4661 | static bfd_boolean |
4662 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4663 | { | |
4664 | return (r_type == R_PPC64_REL24 | |
4665 | || r_type == R_PPC64_REL14 | |
4666 | || r_type == R_PPC64_REL14_BRTAKEN | |
4667 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4668 | || r_type == R_PPC64_ADDR24 | |
4669 | || r_type == R_PPC64_ADDR14 | |
4670 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
4671 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
4672 | } | |
4673 | ||
5bd4f169 | 4674 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4675 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4676 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4677 | |
b34976b6 | 4678 | static bfd_boolean |
4ce794b7 AM |
4679 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4680 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4681 | { |
65f38f15 | 4682 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4683 | Elf_Internal_Shdr *symtab_hdr; |
4684 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4685 | const Elf_Internal_Rela *rel; | |
4686 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4687 | asection *sreloc; |
1e2f5b6e | 4688 | asection **opd_sym_map; |
3a71aa26 | 4689 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4690 | |
1049f94e | 4691 | if (info->relocatable) |
b34976b6 | 4692 | return TRUE; |
5bd4f169 | 4693 | |
680a3378 AM |
4694 | /* Don't do anything special with non-loaded, non-alloced sections. |
4695 | In particular, any relocs in such sections should not affect GOT | |
4696 | and PLT reference counting (ie. we don't allow them to create GOT | |
4697 | or PLT entries), there's no possibility or desire to optimize TLS | |
4698 | relocs, and there's not much point in propagating relocs to shared | |
4699 | libs that the dynamic linker won't relocate. */ | |
4700 | if ((sec->flags & SEC_ALLOC) == 0) | |
4701 | return TRUE; | |
4702 | ||
0c8d6e5c | 4703 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4704 | |
65f38f15 | 4705 | htab = ppc_hash_table (info); |
3a71aa26 AM |
4706 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4707 | FALSE, FALSE, TRUE); | |
4708 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4709 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4710 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 AM |
4711 | |
4712 | sym_hashes = elf_sym_hashes (abfd); | |
4713 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4714 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4715 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4716 | |
4717 | sreloc = NULL; | |
1e2f5b6e AM |
4718 | opd_sym_map = NULL; |
4719 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4720 | { | |
4721 | /* Garbage collection needs some extra help with .opd sections. | |
4722 | We don't want to necessarily keep everything referenced by | |
4723 | relocs in .opd, as that would keep all functions. Instead, | |
4724 | if we reference an .opd symbol (a function descriptor), we | |
4725 | want to keep the function code symbol's section. This is | |
4726 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4727 | information about the associated function section. */ |
1e2f5b6e AM |
4728 | bfd_size_type amt; |
4729 | ||
74f0fb50 | 4730 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4731 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4732 | if (opd_sym_map == NULL) |
b34976b6 | 4733 | return FALSE; |
74f0fb50 | 4734 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4735 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4736 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4737 | } |
5bd4f169 | 4738 | |
82bd7b59 AM |
4739 | if (htab->sfpr == NULL |
4740 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4741 | return FALSE; |
82bd7b59 | 4742 | |
5bd4f169 AM |
4743 | rel_end = relocs + sec->reloc_count; |
4744 | for (rel = relocs; rel < rel_end; rel++) | |
4745 | { | |
4746 | unsigned long r_symndx; | |
4747 | struct elf_link_hash_entry *h; | |
04c9666a | 4748 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4749 | int tls_type; |
7c8fe5c4 | 4750 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 4751 | struct plt_entry **ifunc; |
5bd4f169 AM |
4752 | |
4753 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4754 | if (r_symndx < symtab_hdr->sh_info) | |
4755 | h = NULL; | |
4756 | else | |
973a3492 L |
4757 | { |
4758 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4759 | while (h->root.type == bfd_link_hash_indirect | |
4760 | || h->root.type == bfd_link_hash_warning) | |
4761 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4762 | } | |
5bd4f169 | 4763 | |
727fc41e | 4764 | tls_type = 0; |
e054468f | 4765 | ifunc = NULL; |
4ce794b7 | 4766 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
4767 | if (is_branch_reloc (r_type)) |
4768 | { | |
4769 | if (h != NULL && (h == tga || h == dottga)) | |
4770 | { | |
4771 | if (rel != relocs | |
4772 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4773 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4774 | /* We have a new-style __tls_get_addr call with a marker | |
4775 | reloc. */ | |
4776 | ; | |
4777 | else | |
4778 | /* Mark this section as having an old-style call. */ | |
4779 | sec->has_tls_get_addr_call = 1; | |
4780 | } | |
727fc41e | 4781 | |
e054468f AM |
4782 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
4783 | if (h != NULL) | |
4784 | { | |
4785 | if (h->type == STT_GNU_IFUNC) | |
4786 | { | |
4787 | h->needs_plt = 1; | |
4788 | ifunc = &h->plt.plist; | |
4789 | } | |
4790 | } | |
4791 | else | |
4792 | { | |
4793 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4794 | abfd, r_symndx); | |
4795 | if (isym == NULL) | |
4796 | return FALSE; | |
4797 | ||
4798 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4799 | { | |
4800 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4801 | rel->r_addend, PLT_IFUNC); | |
4802 | if (ifunc == NULL) | |
4803 | return FALSE; | |
4804 | } | |
4805 | } | |
4806 | if (ifunc != NULL | |
4807 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
4808 | return FALSE; | |
4809 | } | |
727fc41e | 4810 | |
a33d1f77 | 4811 | switch (r_type) |
5bd4f169 | 4812 | { |
727fc41e AM |
4813 | case R_PPC64_TLSGD: |
4814 | case R_PPC64_TLSLD: | |
4815 | /* These special tls relocs tie a call to __tls_get_addr with | |
4816 | its parameter symbol. */ | |
4817 | break; | |
4818 | ||
411e1bfb AM |
4819 | case R_PPC64_GOT_TLSLD16: |
4820 | case R_PPC64_GOT_TLSLD16_LO: | |
4821 | case R_PPC64_GOT_TLSLD16_HI: | |
4822 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4823 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4824 | goto dogottls; |
4825 | ||
4826 | case R_PPC64_GOT_TLSGD16: | |
4827 | case R_PPC64_GOT_TLSGD16_LO: | |
4828 | case R_PPC64_GOT_TLSGD16_HI: | |
4829 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4830 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4831 | goto dogottls; |
4832 | ||
4833 | case R_PPC64_GOT_TPREL16_DS: | |
4834 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4835 | case R_PPC64_GOT_TPREL16_HI: | |
4836 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 4837 | if (!info->executable) |
411e1bfb AM |
4838 | info->flags |= DF_STATIC_TLS; |
4839 | tls_type = TLS_TLS | TLS_TPREL; | |
4840 | goto dogottls; | |
4841 | ||
4842 | case R_PPC64_GOT_DTPREL16_DS: | |
4843 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4844 | case R_PPC64_GOT_DTPREL16_HI: | |
4845 | case R_PPC64_GOT_DTPREL16_HA: | |
4846 | tls_type = TLS_TLS | TLS_DTPREL; | |
4847 | dogottls: | |
4848 | sec->has_tls_reloc = 1; | |
4849 | /* Fall thru */ | |
4850 | ||
5bd4f169 | 4851 | case R_PPC64_GOT16: |
5bd4f169 | 4852 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4853 | case R_PPC64_GOT16_HA: |
4854 | case R_PPC64_GOT16_HI: | |
4855 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4856 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4857 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4858 | sec->has_toc_reloc = 1; |
e717da7e AM |
4859 | if (ppc64_elf_tdata (abfd)->got == NULL |
4860 | && !create_got_section (abfd, info)) | |
b34976b6 | 4861 | return FALSE; |
5bd4f169 AM |
4862 | |
4863 | if (h != NULL) | |
4864 | { | |
411e1bfb AM |
4865 | struct ppc_link_hash_entry *eh; |
4866 | struct got_entry *ent; | |
65f38f15 | 4867 | |
411e1bfb AM |
4868 | eh = (struct ppc_link_hash_entry *) h; |
4869 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4870 | if (ent->addend == rel->r_addend | |
e717da7e | 4871 | && ent->owner == abfd |
411e1bfb AM |
4872 | && ent->tls_type == tls_type) |
4873 | break; | |
4874 | if (ent == NULL) | |
5bd4f169 | 4875 | { |
411e1bfb | 4876 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4877 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4878 | if (ent == NULL) |
b34976b6 | 4879 | return FALSE; |
411e1bfb AM |
4880 | ent->next = eh->elf.got.glist; |
4881 | ent->addend = rel->r_addend; | |
e717da7e | 4882 | ent->owner = abfd; |
411e1bfb AM |
4883 | ent->tls_type = tls_type; |
4884 | ent->got.refcount = 0; | |
4885 | eh->elf.got.glist = ent; | |
5bd4f169 | 4886 | } |
411e1bfb | 4887 | ent->got.refcount += 1; |
e7b938ca | 4888 | eh->tls_mask |= tls_type; |
5bd4f169 | 4889 | } |
411e1bfb AM |
4890 | else |
4891 | /* This is a global offset table entry for a local symbol. */ | |
4892 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4893 | rel->r_addend, tls_type)) | |
4894 | return FALSE; | |
5bd4f169 AM |
4895 | break; |
4896 | ||
5bd4f169 | 4897 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4898 | case R_PPC64_PLT16_HI: |
4899 | case R_PPC64_PLT16_LO: | |
4900 | case R_PPC64_PLT32: | |
4901 | case R_PPC64_PLT64: | |
5bd4f169 | 4902 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4903 | actually build the entry in adjust_dynamic_symbol, |
4904 | because this might be a case of linking PIC code without | |
4905 | linking in any dynamic objects, in which case we don't | |
4906 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4907 | if (h == NULL) |
4908 | { | |
4909 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4910 | table entry for a local symbol. */ |
5bd4f169 | 4911 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4912 | return FALSE; |
5bd4f169 | 4913 | } |
411e1bfb | 4914 | else |
e054468f AM |
4915 | { |
4916 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
4917 | return FALSE; | |
4918 | h->needs_plt = 1; | |
4919 | if (h->root.root.string[0] == '.' | |
4920 | && h->root.root.string[1] != '\0') | |
4921 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4922 | } | |
5bd4f169 AM |
4923 | break; |
4924 | ||
4925 | /* The following relocations don't need to propagate the | |
4926 | relocation if linking a shared object since they are | |
4927 | section relative. */ | |
4928 | case R_PPC64_SECTOFF: | |
4929 | case R_PPC64_SECTOFF_LO: | |
4930 | case R_PPC64_SECTOFF_HI: | |
4931 | case R_PPC64_SECTOFF_HA: | |
4932 | case R_PPC64_SECTOFF_DS: | |
4933 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4934 | case R_PPC64_DTPREL16: |
4935 | case R_PPC64_DTPREL16_LO: | |
4936 | case R_PPC64_DTPREL16_HI: | |
4937 | case R_PPC64_DTPREL16_HA: | |
4938 | case R_PPC64_DTPREL16_DS: | |
4939 | case R_PPC64_DTPREL16_LO_DS: | |
4940 | case R_PPC64_DTPREL16_HIGHER: | |
4941 | case R_PPC64_DTPREL16_HIGHERA: | |
4942 | case R_PPC64_DTPREL16_HIGHEST: | |
4943 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4944 | break; |
4945 | ||
ad8e1ba5 AM |
4946 | /* Nor do these. */ |
4947 | case R_PPC64_TOC16: | |
4948 | case R_PPC64_TOC16_LO: | |
4949 | case R_PPC64_TOC16_HI: | |
4950 | case R_PPC64_TOC16_HA: | |
4951 | case R_PPC64_TOC16_DS: | |
4952 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4953 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4954 | break; |
4955 | ||
5bd4f169 AM |
4956 | /* This relocation describes the C++ object vtable hierarchy. |
4957 | Reconstruct it for later use during GC. */ | |
4958 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4959 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4960 | return FALSE; |
5bd4f169 AM |
4961 | break; |
4962 | ||
4963 | /* This relocation describes which C++ vtable entries are actually | |
4964 | used. Record for later use during GC. */ | |
4965 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
4966 | BFD_ASSERT (h != NULL); |
4967 | if (h != NULL | |
4968 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 4969 | return FALSE; |
5bd4f169 AM |
4970 | break; |
4971 | ||
721956f4 AM |
4972 | case R_PPC64_REL14: |
4973 | case R_PPC64_REL14_BRTAKEN: | |
4974 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4975 | { |
4976 | asection *dest = NULL; | |
4977 | ||
4978 | /* Heuristic: If jumping outside our section, chances are | |
4979 | we are going to need a stub. */ | |
4980 | if (h != NULL) | |
4981 | { | |
4982 | /* If the sym is weak it may be overridden later, so | |
4983 | don't assume we know where a weak sym lives. */ | |
4984 | if (h->root.type == bfd_link_hash_defined) | |
4985 | dest = h->root.u.def.section; | |
4986 | } | |
4987 | else | |
87d72d41 AM |
4988 | { |
4989 | Elf_Internal_Sym *isym; | |
4990 | ||
4991 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4992 | abfd, r_symndx); | |
4993 | if (isym == NULL) | |
4994 | return FALSE; | |
4995 | ||
4996 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4997 | } | |
4998 | ||
220c76dd | 4999 | if (dest != sec) |
7c8fe5c4 | 5000 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5001 | } |
721956f4 AM |
5002 | /* Fall through. */ |
5003 | ||
5d1634d7 | 5004 | case R_PPC64_REL24: |
e054468f | 5005 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5006 | { |
5007 | /* We may need a .plt entry if the function this reloc | |
5008 | refers to is in a shared lib. */ | |
e054468f | 5009 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5010 | return FALSE; |
e054468f AM |
5011 | h->needs_plt = 1; |
5012 | if (h->root.root.string[0] == '.' | |
5013 | && h->root.root.string[1] != '\0') | |
5014 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5015 | if (h == tga || h == dottga) |
411e1bfb | 5016 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5017 | } |
5018 | break; | |
5019 | ||
5020 | case R_PPC64_TPREL64: | |
5021 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5022 | if (!info->executable) |
411e1bfb AM |
5023 | info->flags |= DF_STATIC_TLS; |
5024 | goto dotlstoc; | |
5025 | ||
5026 | case R_PPC64_DTPMOD64: | |
5027 | if (rel + 1 < rel_end | |
5028 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5029 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5030 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5031 | else |
951fd09b | 5032 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5033 | goto dotlstoc; |
5034 | ||
5035 | case R_PPC64_DTPREL64: | |
5036 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5037 | if (rel != relocs | |
5038 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5039 | && rel[-1].r_offset == rel->r_offset - 8) | |
5040 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5041 | Don't mark with TLS_DTPREL. */ | |
5042 | goto dodyn; | |
5043 | ||
5044 | dotlstoc: | |
5045 | sec->has_tls_reloc = 1; | |
5046 | if (h != NULL) | |
5047 | { | |
5048 | struct ppc_link_hash_entry *eh; | |
5049 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5050 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5051 | } |
5052 | else | |
5053 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5054 | rel->r_addend, tls_type)) | |
5055 | return FALSE; | |
5056 | ||
7c8fe5c4 AM |
5057 | ppc64_sec = ppc64_elf_section_data (sec); |
5058 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5059 | { |
3a71aa26 AM |
5060 | bfd_size_type amt; |
5061 | ||
e7b938ca | 5062 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5063 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5064 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5065 | if (ppc64_sec->u.toc.symndx == NULL) | |
5066 | return FALSE; | |
5067 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5068 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5069 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5070 | return FALSE; |
7c8fe5c4 AM |
5071 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5072 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5073 | } |
5074 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5075 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5076 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5077 | |
5078 | /* Mark the second slot of a GD or LD entry. | |
5079 | -1 to indicate GD and -2 to indicate LD. */ | |
5080 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5081 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5082 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5083 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5084 | goto dodyn; |
5085 | ||
5086 | case R_PPC64_TPREL16: | |
5087 | case R_PPC64_TPREL16_LO: | |
5088 | case R_PPC64_TPREL16_HI: | |
5089 | case R_PPC64_TPREL16_HA: | |
5090 | case R_PPC64_TPREL16_DS: | |
5091 | case R_PPC64_TPREL16_LO_DS: | |
5092 | case R_PPC64_TPREL16_HIGHER: | |
5093 | case R_PPC64_TPREL16_HIGHERA: | |
5094 | case R_PPC64_TPREL16_HIGHEST: | |
5095 | case R_PPC64_TPREL16_HIGHESTA: | |
5096 | if (info->shared) | |
5097 | { | |
1d483afe AM |
5098 | if (!info->executable) |
5099 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5100 | goto dodyn; |
5d1634d7 AM |
5101 | } |
5102 | break; | |
5103 | ||
e86ce104 | 5104 | case R_PPC64_ADDR64: |
1e2f5b6e | 5105 | if (opd_sym_map != NULL |
1e2f5b6e | 5106 | && rel + 1 < rel_end |
4ce794b7 | 5107 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5108 | { |
8387904d AM |
5109 | if (h != NULL) |
5110 | { | |
5111 | if (h->root.root.string[0] == '.' | |
5112 | && h->root.root.string[1] != 0 | |
5113 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
5114 | ; | |
5115 | else | |
5116 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5117 | } | |
5118 | else | |
5119 | { | |
5120 | asection *s; | |
87d72d41 | 5121 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5122 | |
87d72d41 AM |
5123 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5124 | abfd, r_symndx); | |
5125 | if (isym == NULL) | |
8387904d | 5126 | return FALSE; |
87d72d41 AM |
5127 | |
5128 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5129 | if (s != NULL && s != sec) | |
3f764659 | 5130 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5131 | } |
1e2f5b6e | 5132 | } |
e86ce104 AM |
5133 | /* Fall through. */ |
5134 | ||
04c9666a | 5135 | case R_PPC64_REL30: |
5bd4f169 | 5136 | case R_PPC64_REL32: |
04c9666a | 5137 | case R_PPC64_REL64: |
65f38f15 AM |
5138 | case R_PPC64_ADDR14: |
5139 | case R_PPC64_ADDR14_BRNTAKEN: | |
5140 | case R_PPC64_ADDR14_BRTAKEN: | |
5141 | case R_PPC64_ADDR16: | |
5142 | case R_PPC64_ADDR16_DS: | |
5143 | case R_PPC64_ADDR16_HA: | |
5144 | case R_PPC64_ADDR16_HI: | |
5145 | case R_PPC64_ADDR16_HIGHER: | |
5146 | case R_PPC64_ADDR16_HIGHERA: | |
5147 | case R_PPC64_ADDR16_HIGHEST: | |
5148 | case R_PPC64_ADDR16_HIGHESTA: | |
5149 | case R_PPC64_ADDR16_LO: | |
5150 | case R_PPC64_ADDR16_LO_DS: | |
5151 | case R_PPC64_ADDR24: | |
65f38f15 | 5152 | case R_PPC64_ADDR32: |
65f38f15 AM |
5153 | case R_PPC64_UADDR16: |
5154 | case R_PPC64_UADDR32: | |
5155 | case R_PPC64_UADDR64: | |
5bd4f169 | 5156 | case R_PPC64_TOC: |
81848ca0 AM |
5157 | if (h != NULL && !info->shared) |
5158 | /* We may need a copy reloc. */ | |
f5385ebf | 5159 | h->non_got_ref = 1; |
81848ca0 | 5160 | |
41bd81ab | 5161 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5162 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5163 | break; |
e86ce104 | 5164 | |
65f38f15 AM |
5165 | /* If we are creating a shared library, and this is a reloc |
5166 | against a global symbol, or a non PC relative reloc | |
5167 | against a local symbol, then we need to copy the reloc | |
5168 | into the shared library. However, if we are linking with | |
5169 | -Bsymbolic, we do not need to copy a reloc against a | |
5170 | global symbol which is defined in an object we are | |
5171 | including in the link (i.e., DEF_REGULAR is set). At | |
5172 | this point we have not seen all the input files, so it is | |
5173 | possible that DEF_REGULAR is not set now but will be set | |
5174 | later (it is never cleared). In case of a weak definition, | |
5175 | DEF_REGULAR may be cleared later by a strong definition in | |
5176 | a shared library. We account for that possibility below by | |
f4656909 | 5177 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5178 | table entry. A similar situation occurs when creating |
5179 | shared libraries and symbol visibility changes render the | |
5180 | symbol local. | |
5181 | ||
5182 | If on the other hand, we are creating an executable, we | |
5183 | may need to keep relocations for symbols satisfied by a | |
5184 | dynamic library if we manage to avoid copy relocs for the | |
5185 | symbol. */ | |
411e1bfb | 5186 | dodyn: |
65f38f15 | 5187 | if ((info->shared |
1d483afe | 5188 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 AM |
5189 | || (h != NULL |
5190 | && (! info->symbolic | |
5191 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5192 | || !h->def_regular)))) |
f4656909 AM |
5193 | || (ELIMINATE_COPY_RELOCS |
5194 | && !info->shared | |
65f38f15 AM |
5195 | && h != NULL |
5196 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5197 | || !h->def_regular))) |
5bd4f169 | 5198 | { |
ec338859 AM |
5199 | struct ppc_dyn_relocs *p; |
5200 | struct ppc_dyn_relocs **head; | |
5201 | ||
65f38f15 AM |
5202 | /* We must copy these reloc types into the output file. |
5203 | Create a reloc section in dynobj and make room for | |
5204 | this reloc. */ | |
5bd4f169 AM |
5205 | if (sreloc == NULL) |
5206 | { | |
83bac4b0 NC |
5207 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5208 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5209 | |
5bd4f169 | 5210 | if (sreloc == NULL) |
83bac4b0 | 5211 | return FALSE; |
5bd4f169 AM |
5212 | } |
5213 | ||
65f38f15 AM |
5214 | /* If this is a global symbol, we count the number of |
5215 | relocations we need for this symbol. */ | |
5216 | if (h != NULL) | |
5217 | { | |
ec338859 | 5218 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
5219 | } |
5220 | else | |
5221 | { | |
ec338859 AM |
5222 | /* Track dynamic relocs needed for local syms too. |
5223 | We really need local syms available to do this | |
5224 | easily. Oh well. */ | |
ec338859 | 5225 | asection *s; |
6edfbbad | 5226 | void *vpp; |
87d72d41 | 5227 | Elf_Internal_Sym *isym; |
6edfbbad | 5228 | |
87d72d41 AM |
5229 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5230 | abfd, r_symndx); | |
5231 | if (isym == NULL) | |
b34976b6 | 5232 | return FALSE; |
ec338859 | 5233 | |
87d72d41 AM |
5234 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5235 | if (s == NULL) | |
5236 | s = sec; | |
5237 | ||
6edfbbad DJ |
5238 | vpp = &elf_section_data (s)->local_dynrel; |
5239 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 5240 | } |
ec338859 AM |
5241 | |
5242 | p = *head; | |
5243 | if (p == NULL || p->sec != sec) | |
5244 | { | |
4ce794b7 | 5245 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 5246 | if (p == NULL) |
b34976b6 | 5247 | return FALSE; |
ec338859 AM |
5248 | p->next = *head; |
5249 | *head = p; | |
5250 | p->sec = sec; | |
5251 | p->count = 0; | |
5252 | p->pc_count = 0; | |
5253 | } | |
5254 | ||
5255 | p->count += 1; | |
1d483afe | 5256 | if (!must_be_dyn_reloc (info, r_type)) |
ec338859 | 5257 | p->pc_count += 1; |
65f38f15 | 5258 | } |
5bd4f169 | 5259 | break; |
65f38f15 AM |
5260 | |
5261 | default: | |
96e0dda4 | 5262 | break; |
5bd4f169 AM |
5263 | } |
5264 | } | |
5265 | ||
b34976b6 | 5266 | return TRUE; |
5bd4f169 AM |
5267 | } |
5268 | ||
8387904d AM |
5269 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5270 | of the code entry point, and its section. */ | |
5271 | ||
5272 | static bfd_vma | |
5273 | opd_entry_value (asection *opd_sec, | |
5274 | bfd_vma offset, | |
5275 | asection **code_sec, | |
5276 | bfd_vma *code_off) | |
5277 | { | |
5278 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5279 | Elf_Internal_Rela *relocs; |
8387904d | 5280 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5281 | bfd_vma val; |
8387904d | 5282 | |
4b85d634 AM |
5283 | /* No relocs implies we are linking a --just-symbols object. */ |
5284 | if (opd_sec->reloc_count == 0) | |
5285 | { | |
5286 | bfd_vma val; | |
5287 | ||
5288 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
5289 | return (bfd_vma) -1; | |
3b36f7e6 | 5290 | |
4b85d634 AM |
5291 | if (code_sec != NULL) |
5292 | { | |
5293 | asection *sec, *likely = NULL; | |
5294 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5295 | if (sec->vma <= val | |
5296 | && (sec->flags & SEC_LOAD) != 0 | |
5297 | && (sec->flags & SEC_ALLOC) != 0) | |
5298 | likely = sec; | |
5299 | if (likely != NULL) | |
5300 | { | |
5301 | *code_sec = likely; | |
5302 | if (code_off != NULL) | |
5303 | *code_off = val - likely->vma; | |
5304 | } | |
5305 | } | |
5306 | return val; | |
5307 | } | |
5308 | ||
0c8d6e5c | 5309 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5310 | |
8860955f AM |
5311 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5312 | if (relocs == NULL) | |
5313 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5314 | |
8387904d | 5315 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5316 | lo = relocs; |
8387904d AM |
5317 | BFD_ASSERT (lo != NULL); |
5318 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5319 | val = (bfd_vma) -1; |
8387904d AM |
5320 | while (lo < hi) |
5321 | { | |
5322 | look = lo + (hi - lo) / 2; | |
5323 | if (look->r_offset < offset) | |
5324 | lo = look + 1; | |
5325 | else if (look->r_offset > offset) | |
5326 | hi = look; | |
5327 | else | |
5328 | { | |
0ffa91dd NC |
5329 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5330 | ||
8387904d AM |
5331 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5332 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5333 | { | |
5334 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5335 | asection *sec; |
5336 | ||
5337 | if (symndx < symtab_hdr->sh_info) | |
5338 | { | |
5339 | Elf_Internal_Sym *sym; | |
5340 | ||
5341 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5342 | if (sym == NULL) | |
5343 | { | |
5344 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5345 | symtab_hdr->sh_info, | |
5346 | 0, NULL, NULL, NULL); | |
5347 | if (sym == NULL) | |
645ea6a9 | 5348 | break; |
8387904d AM |
5349 | symtab_hdr->contents = (bfd_byte *) sym; |
5350 | } | |
5351 | ||
5352 | sym += symndx; | |
5353 | val = sym->st_value; | |
cb33740c | 5354 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5355 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5356 | } | |
5357 | else | |
5358 | { | |
5359 | struct elf_link_hash_entry **sym_hashes; | |
5360 | struct elf_link_hash_entry *rh; | |
5361 | ||
5362 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5363 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5364 | while (rh->root.type == bfd_link_hash_indirect | |
5365 | || rh->root.type == bfd_link_hash_warning) | |
5366 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5367 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5368 | || rh->root.type == bfd_link_hash_defweak); | |
5369 | val = rh->root.u.def.value; | |
5370 | sec = rh->root.u.def.section; | |
5371 | } | |
5372 | val += look->r_addend; | |
5373 | if (code_off != NULL) | |
5374 | *code_off = val; | |
5375 | if (code_sec != NULL) | |
5376 | *code_sec = sec; | |
5377 | if (sec != NULL && sec->output_section != NULL) | |
5378 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5379 | } |
5380 | break; | |
5381 | } | |
5382 | } | |
645ea6a9 | 5383 | |
645ea6a9 | 5384 | return val; |
8387904d AM |
5385 | } |
5386 | ||
74f0fb50 AM |
5387 | /* Mark all our entry sym sections, both opd and code section. */ |
5388 | ||
5389 | static void | |
5390 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5391 | { | |
5392 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5393 | struct bfd_sym_chain *sym; | |
5394 | ||
5395 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
5396 | { | |
5397 | struct ppc_link_hash_entry *eh; | |
5398 | asection *sec; | |
5399 | ||
5400 | eh = (struct ppc_link_hash_entry *) | |
5401 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5402 | if (eh == NULL) | |
5403 | continue; | |
5404 | if (eh->elf.root.type != bfd_link_hash_defined | |
5405 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5406 | continue; | |
5407 | ||
5408 | if (eh->is_func_descriptor | |
5409 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5410 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5411 | { | |
5412 | sec = eh->oh->elf.root.u.def.section; | |
5413 | sec->flags |= SEC_KEEP; | |
5414 | } | |
5415 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5416 | && opd_entry_value (eh->elf.root.u.def.section, | |
5417 | eh->elf.root.u.def.value, | |
5418 | &sec, NULL) != (bfd_vma) -1) | |
5419 | sec->flags |= SEC_KEEP; | |
5420 | ||
5421 | sec = eh->elf.root.u.def.section; | |
5422 | sec->flags |= SEC_KEEP; | |
5423 | } | |
5424 | } | |
5425 | ||
64d03ab5 AM |
5426 | /* Mark sections containing dynamically referenced symbols. When |
5427 | building shared libraries, we must assume that any visible symbol is | |
5428 | referenced. */ | |
5429 | ||
5430 | static bfd_boolean | |
5431 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5432 | { | |
5433 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5434 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5435 | ||
5436 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5437 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5438 | ||
5439 | /* Dynamic linking info is on the func descriptor sym. */ | |
5440 | if (eh->oh != NULL | |
5441 | && eh->oh->is_func_descriptor | |
5442 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5443 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5444 | eh = eh->oh; | |
5445 | ||
5446 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5447 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5448 | && (eh->elf.ref_dynamic | |
5449 | || (!info->executable | |
5450 | && eh->elf.def_regular | |
5451 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5452 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5453 | { | |
5454 | asection *code_sec; | |
5455 | ||
5456 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5457 | ||
5458 | /* Function descriptor syms cause the associated | |
5459 | function code sym section to be marked. */ | |
5460 | if (eh->is_func_descriptor | |
5461 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5462 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5463 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5464 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5465 | && opd_entry_value (eh->elf.root.u.def.section, | |
5466 | eh->elf.root.u.def.value, | |
5467 | &code_sec, NULL) != (bfd_vma) -1) | |
5468 | code_sec->flags |= SEC_KEEP; | |
5469 | } | |
5470 | ||
5471 | return TRUE; | |
5472 | } | |
5473 | ||
5bd4f169 AM |
5474 | /* Return the section that should be marked against GC for a given |
5475 | relocation. */ | |
5476 | ||
5477 | static asection * | |
4ce794b7 | 5478 | ppc64_elf_gc_mark_hook (asection *sec, |
74f0fb50 | 5479 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4ce794b7 AM |
5480 | Elf_Internal_Rela *rel, |
5481 | struct elf_link_hash_entry *h, | |
5482 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5483 | { |
ccfa59ea AM |
5484 | asection *rsec; |
5485 | ||
ccfa59ea AM |
5486 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5487 | function sections, as all functions are referenced in .opd. */ | |
5488 | rsec = NULL; | |
5489 | if (get_opd_info (sec) != NULL) | |
5490 | return rsec; | |
1e2f5b6e | 5491 | |
5bd4f169 AM |
5492 | if (h != NULL) |
5493 | { | |
04c9666a | 5494 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5495 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5496 | |
4ce794b7 | 5497 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5498 | switch (r_type) |
5bd4f169 AM |
5499 | { |
5500 | case R_PPC64_GNU_VTINHERIT: | |
5501 | case R_PPC64_GNU_VTENTRY: | |
5502 | break; | |
5503 | ||
5504 | default: | |
5505 | switch (h->root.type) | |
5506 | { | |
5507 | case bfd_link_hash_defined: | |
5508 | case bfd_link_hash_defweak: | |
ccfa59ea | 5509 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5510 | if (eh->oh != NULL |
5511 | && eh->oh->is_func_descriptor | |
5512 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5513 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5514 | eh = eh->oh; |
1e2f5b6e AM |
5515 | |
5516 | /* Function descriptor syms cause the associated | |
5517 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5518 | if (eh->is_func_descriptor |
5519 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5520 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5521 | { |
5522 | /* They also mark their opd section. */ | |
74f0fb50 | 5523 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea AM |
5524 | |
5525 | rsec = eh->oh->elf.root.u.def.section; | |
5526 | } | |
8387904d AM |
5527 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5528 | && opd_entry_value (eh->elf.root.u.def.section, | |
5529 | eh->elf.root.u.def.value, | |
5530 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5531 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5532 | else |
1e2f5b6e AM |
5533 | rsec = h->root.u.def.section; |
5534 | break; | |
5bd4f169 AM |
5535 | |
5536 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5537 | rsec = h->root.u.c.p->section; |
5538 | break; | |
5bd4f169 AM |
5539 | |
5540 | default: | |
5541 | break; | |
5542 | } | |
5543 | } | |
5544 | } | |
5545 | else | |
5546 | { | |
74f0fb50 | 5547 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5548 | |
5549 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5550 | opd = get_opd_info (rsec); |
5551 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5552 | { |
74f0fb50 | 5553 | rsec->gc_mark = 1; |
ccfa59ea | 5554 | |
74f0fb50 | 5555 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5556 | } |
5bd4f169 AM |
5557 | } |
5558 | ||
1e2f5b6e | 5559 | return rsec; |
5bd4f169 AM |
5560 | } |
5561 | ||
65f38f15 AM |
5562 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5563 | section being removed. */ | |
5bd4f169 | 5564 | |
b34976b6 | 5565 | static bfd_boolean |
4ce794b7 AM |
5566 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5567 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5568 | { |
411e1bfb | 5569 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5570 | Elf_Internal_Shdr *symtab_hdr; |
5571 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5572 | struct got_entry **local_got_ents; |
5bd4f169 | 5573 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5574 | |
7dda2462 TG |
5575 | if (info->relocatable) |
5576 | return TRUE; | |
5577 | ||
680a3378 AM |
5578 | if ((sec->flags & SEC_ALLOC) == 0) |
5579 | return TRUE; | |
5580 | ||
ec338859 AM |
5581 | elf_section_data (sec)->local_dynrel = NULL; |
5582 | ||
411e1bfb | 5583 | htab = ppc_hash_table (info); |
0ffa91dd | 5584 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5585 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5586 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5587 | |
5588 | relend = relocs + sec->reloc_count; | |
5589 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5590 | { |
5591 | unsigned long r_symndx; | |
04c9666a | 5592 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5593 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5594 | char tls_type = 0; |
5bd4f169 | 5595 | |
a33d1f77 | 5596 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5597 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5598 | if (r_symndx >= symtab_hdr->sh_info) |
5599 | { | |
5600 | struct ppc_link_hash_entry *eh; | |
5601 | struct ppc_dyn_relocs **pp; | |
5602 | struct ppc_dyn_relocs *p; | |
5603 | ||
5604 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5605 | while (h->root.type == bfd_link_hash_indirect |
5606 | || h->root.type == bfd_link_hash_warning) | |
5607 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5608 | eh = (struct ppc_link_hash_entry *) h; |
5609 | ||
5610 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5611 | if (p->sec == sec) | |
5612 | { | |
5613 | /* Everything must go for SEC. */ | |
5614 | *pp = p->next; | |
5615 | break; | |
5616 | } | |
5617 | } | |
5618 | ||
e054468f AM |
5619 | if (is_branch_reloc (r_type)) |
5620 | { | |
5621 | struct plt_entry **ifunc = NULL; | |
5622 | if (h != NULL) | |
5623 | { | |
5624 | if (h->type == STT_GNU_IFUNC) | |
5625 | ifunc = &h->plt.plist; | |
5626 | } | |
5627 | else if (local_got_ents != NULL) | |
5628 | { | |
5629 | struct plt_entry **local_plt = (struct plt_entry **) | |
5630 | (local_got_ents + symtab_hdr->sh_info); | |
5631 | char *local_got_tls_masks = (char *) | |
5632 | (local_plt + symtab_hdr->sh_info); | |
5633 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
5634 | ifunc = local_plt + r_symndx; | |
5635 | } | |
5636 | if (ifunc != NULL) | |
5637 | { | |
5638 | struct plt_entry *ent; | |
5639 | ||
5640 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
5641 | if (ent->addend == rel->r_addend) | |
5642 | break; | |
5643 | if (ent == NULL) | |
5644 | abort (); | |
5645 | if (ent->plt.refcount > 0) | |
5646 | ent->plt.refcount -= 1; | |
5647 | continue; | |
5648 | } | |
5649 | } | |
5650 | ||
a33d1f77 AM |
5651 | switch (r_type) |
5652 | { | |
411e1bfb AM |
5653 | case R_PPC64_GOT_TLSLD16: |
5654 | case R_PPC64_GOT_TLSLD16_LO: | |
5655 | case R_PPC64_GOT_TLSLD16_HI: | |
5656 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5657 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5658 | goto dogot; |
5659 | ||
5660 | case R_PPC64_GOT_TLSGD16: | |
5661 | case R_PPC64_GOT_TLSGD16_LO: | |
5662 | case R_PPC64_GOT_TLSGD16_HI: | |
5663 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5664 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5665 | goto dogot; |
5666 | ||
5667 | case R_PPC64_GOT_TPREL16_DS: | |
5668 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5669 | case R_PPC64_GOT_TPREL16_HI: | |
5670 | case R_PPC64_GOT_TPREL16_HA: | |
5671 | tls_type = TLS_TLS | TLS_TPREL; | |
5672 | goto dogot; | |
5673 | ||
5674 | case R_PPC64_GOT_DTPREL16_DS: | |
5675 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5676 | case R_PPC64_GOT_DTPREL16_HI: | |
5677 | case R_PPC64_GOT_DTPREL16_HA: | |
5678 | tls_type = TLS_TLS | TLS_DTPREL; | |
5679 | goto dogot; | |
5680 | ||
a33d1f77 AM |
5681 | case R_PPC64_GOT16: |
5682 | case R_PPC64_GOT16_DS: | |
5683 | case R_PPC64_GOT16_HA: | |
5684 | case R_PPC64_GOT16_HI: | |
5685 | case R_PPC64_GOT16_LO: | |
5686 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5687 | dogot: |
5688 | { | |
5689 | struct got_entry *ent; | |
5690 | ||
58ac9f71 AM |
5691 | if (h != NULL) |
5692 | ent = h->got.glist; | |
411e1bfb AM |
5693 | else |
5694 | ent = local_got_ents[r_symndx]; | |
5695 | ||
5696 | for (; ent != NULL; ent = ent->next) | |
5697 | if (ent->addend == rel->r_addend | |
e717da7e | 5698 | && ent->owner == abfd |
411e1bfb AM |
5699 | && ent->tls_type == tls_type) |
5700 | break; | |
5701 | if (ent == NULL) | |
5702 | abort (); | |
5703 | if (ent->got.refcount > 0) | |
5704 | ent->got.refcount -= 1; | |
5705 | } | |
a33d1f77 | 5706 | break; |
65f38f15 | 5707 | |
a33d1f77 AM |
5708 | case R_PPC64_PLT16_HA: |
5709 | case R_PPC64_PLT16_HI: | |
5710 | case R_PPC64_PLT16_LO: | |
5711 | case R_PPC64_PLT32: | |
5712 | case R_PPC64_PLT64: | |
721956f4 AM |
5713 | case R_PPC64_REL14: |
5714 | case R_PPC64_REL14_BRNTAKEN: | |
5715 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5716 | case R_PPC64_REL24: |
58ac9f71 | 5717 | if (h != NULL) |
5d1634d7 | 5718 | { |
411e1bfb AM |
5719 | struct plt_entry *ent; |
5720 | ||
411e1bfb AM |
5721 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5722 | if (ent->addend == rel->r_addend) | |
5723 | break; | |
5724 | if (ent == NULL) | |
5725 | abort (); | |
5726 | if (ent->plt.refcount > 0) | |
5727 | ent->plt.refcount -= 1; | |
5d1634d7 | 5728 | } |
e86ce104 | 5729 | break; |
5d1634d7 | 5730 | |
a33d1f77 AM |
5731 | default: |
5732 | break; | |
5733 | } | |
5734 | } | |
b34976b6 | 5735 | return TRUE; |
5bd4f169 AM |
5736 | } |
5737 | ||
deb0e272 AM |
5738 | /* The maximum size of .sfpr. */ |
5739 | #define SFPR_MAX (218*4) | |
5740 | ||
5741 | struct sfpr_def_parms | |
5742 | { | |
699733f6 AM |
5743 | const char name[12]; |
5744 | unsigned char lo, hi; | |
deb0e272 AM |
5745 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5746 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5747 | }; | |
5748 | ||
5749 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5750 | ||
5751 | static unsigned int | |
5752 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5753 | { | |
5754 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5755 | unsigned int i; | |
5756 | size_t len = strlen (parm->name); | |
5757 | bfd_boolean writing = FALSE; | |
699733f6 | 5758 | char sym[16]; |
deb0e272 AM |
5759 | |
5760 | memcpy (sym, parm->name, len); | |
5761 | sym[len + 2] = 0; | |
5762 | ||
5763 | for (i = parm->lo; i <= parm->hi; i++) | |
5764 | { | |
5765 | struct elf_link_hash_entry *h; | |
5766 | ||
5767 | sym[len + 0] = i / 10 + '0'; | |
5768 | sym[len + 1] = i % 10 + '0'; | |
5769 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5770 | if (h != NULL | |
f5385ebf | 5771 | && !h->def_regular) |
deb0e272 AM |
5772 | { |
5773 | h->root.type = bfd_link_hash_defined; | |
5774 | h->root.u.def.section = htab->sfpr; | |
5775 | h->root.u.def.value = htab->sfpr->size; | |
5776 | h->type = STT_FUNC; | |
f5385ebf | 5777 | h->def_regular = 1; |
deb0e272 AM |
5778 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5779 | writing = TRUE; | |
5780 | if (htab->sfpr->contents == NULL) | |
5781 | { | |
5782 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5783 | if (htab->sfpr->contents == NULL) | |
5784 | return FALSE; | |
5785 | } | |
5786 | } | |
5787 | if (writing) | |
5788 | { | |
5789 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5790 | if (i != parm->hi) | |
5791 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5792 | else | |
5793 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5794 | htab->sfpr->size = p - htab->sfpr->contents; | |
5795 | } | |
5796 | } | |
5797 | ||
5798 | return TRUE; | |
5799 | } | |
5800 | ||
5801 | static bfd_byte * | |
5802 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5803 | { | |
5804 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5805 | return p + 4; | |
5806 | } | |
5807 | ||
5808 | static bfd_byte * | |
5809 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5810 | { | |
5811 | p = savegpr0 (abfd, p, r); | |
5812 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5813 | p = p + 4; | |
5814 | bfd_put_32 (abfd, BLR, p); | |
5815 | return p + 4; | |
5816 | } | |
5817 | ||
5818 | static bfd_byte * | |
5819 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5820 | { | |
5821 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5822 | return p + 4; | |
5823 | } | |
5824 | ||
5825 | static bfd_byte * | |
5826 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5827 | { | |
5828 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5829 | p = p + 4; | |
5830 | p = restgpr0 (abfd, p, r); | |
5831 | bfd_put_32 (abfd, MTLR_R0, p); | |
5832 | p = p + 4; | |
5833 | if (r == 29) | |
5834 | { | |
5835 | p = restgpr0 (abfd, p, 30); | |
5836 | p = restgpr0 (abfd, p, 31); | |
5837 | } | |
5838 | bfd_put_32 (abfd, BLR, p); | |
5839 | return p + 4; | |
5840 | } | |
5841 | ||
5842 | static bfd_byte * | |
5843 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5844 | { | |
5845 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5846 | return p + 4; | |
5847 | } | |
5848 | ||
5849 | static bfd_byte * | |
5850 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5851 | { | |
5852 | p = savegpr1 (abfd, p, r); | |
5853 | bfd_put_32 (abfd, BLR, p); | |
5854 | return p + 4; | |
5855 | } | |
5856 | ||
5857 | static bfd_byte * | |
5858 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5859 | { | |
5860 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5861 | return p + 4; | |
5862 | } | |
5863 | ||
5864 | static bfd_byte * | |
5865 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5866 | { | |
5867 | p = restgpr1 (abfd, p, r); | |
5868 | bfd_put_32 (abfd, BLR, p); | |
5869 | return p + 4; | |
5870 | } | |
5871 | ||
5872 | static bfd_byte * | |
5873 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5874 | { | |
5875 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5876 | return p + 4; | |
5877 | } | |
5878 | ||
5879 | static bfd_byte * | |
5880 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5881 | { | |
5882 | p = savefpr (abfd, p, r); | |
5883 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5884 | p = p + 4; | |
5885 | bfd_put_32 (abfd, BLR, p); | |
5886 | return p + 4; | |
5887 | } | |
5888 | ||
5889 | static bfd_byte * | |
5890 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5891 | { | |
5892 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5893 | return p + 4; | |
5894 | } | |
5895 | ||
5896 | static bfd_byte * | |
5897 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5898 | { | |
5899 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5900 | p = p + 4; | |
5901 | p = restfpr (abfd, p, r); | |
5902 | bfd_put_32 (abfd, MTLR_R0, p); | |
5903 | p = p + 4; | |
5904 | if (r == 29) | |
5905 | { | |
5906 | p = restfpr (abfd, p, 30); | |
5907 | p = restfpr (abfd, p, 31); | |
5908 | } | |
5909 | bfd_put_32 (abfd, BLR, p); | |
5910 | return p + 4; | |
5911 | } | |
5912 | ||
5913 | static bfd_byte * | |
5914 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5915 | { | |
5916 | p = savefpr (abfd, p, r); | |
5917 | bfd_put_32 (abfd, BLR, p); | |
5918 | return p + 4; | |
5919 | } | |
5920 | ||
5921 | static bfd_byte * | |
5922 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5923 | { | |
5924 | p = restfpr (abfd, p, r); | |
5925 | bfd_put_32 (abfd, BLR, p); | |
5926 | return p + 4; | |
5927 | } | |
5928 | ||
5929 | static bfd_byte * | |
5930 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5931 | { | |
5932 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5933 | p = p + 4; | |
5934 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5935 | return p + 4; | |
5936 | } | |
5937 | ||
5938 | static bfd_byte * | |
5939 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5940 | { | |
5941 | p = savevr (abfd, p, r); | |
5942 | bfd_put_32 (abfd, BLR, p); | |
5943 | return p + 4; | |
5944 | } | |
5945 | ||
5946 | static bfd_byte * | |
5947 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5948 | { | |
5949 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5950 | p = p + 4; | |
5951 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5952 | return p + 4; | |
5953 | } | |
5954 | ||
5955 | static bfd_byte * | |
5956 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5957 | { | |
5958 | p = restvr (abfd, p, r); | |
5959 | bfd_put_32 (abfd, BLR, p); | |
5960 | return p + 4; | |
5961 | } | |
5962 | ||
e86ce104 AM |
5963 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5964 | information on function code symbol entries to their corresponding | |
5965 | function descriptor symbol entries. */ | |
deb0e272 | 5966 | |
b34976b6 | 5967 | static bfd_boolean |
4ce794b7 | 5968 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5969 | { |
e86ce104 | 5970 | struct bfd_link_info *info; |
65f38f15 | 5971 | struct ppc_link_hash_table *htab; |
411e1bfb | 5972 | struct plt_entry *ent; |
50bc7936 AM |
5973 | struct ppc_link_hash_entry *fh; |
5974 | struct ppc_link_hash_entry *fdh; | |
5975 | bfd_boolean force_local; | |
5bd4f169 | 5976 | |
50bc7936 AM |
5977 | fh = (struct ppc_link_hash_entry *) h; |
5978 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5979 | return TRUE; |
e86ce104 | 5980 | |
50bc7936 AM |
5981 | if (fh->elf.root.type == bfd_link_hash_warning) |
5982 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5983 | |
4ce794b7 | 5984 | info = inf; |
65f38f15 | 5985 | htab = ppc_hash_table (info); |
5bd4f169 | 5986 | |
c09bdfe5 AM |
5987 | /* Resolve undefined references to dot-symbols as the value |
5988 | in the function descriptor, if we have one in a regular object. | |
5989 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5990 | in dynamic objects are handled elsewhere. */ | |
5991 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5992 | && fh->was_undefined | |
5993 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5994 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5995 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5996 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5997 | fh->oh->elf.root.u.def.value, | |
5998 | &fh->elf.root.u.def.section, | |
5999 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
6000 | { | |
6001 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 6002 | fh->elf.forced_local = 1; |
2b953679 AM |
6003 | fh->elf.def_regular = fh->oh->elf.def_regular; |
6004 | fh->elf.def_dynamic = fh->oh->elf.def_dynamic; | |
c09bdfe5 AM |
6005 | } |
6006 | ||
e86ce104 AM |
6007 | /* If this is a function code symbol, transfer dynamic linking |
6008 | information to the function descriptor symbol. */ | |
50bc7936 | 6009 | if (!fh->is_func) |
b34976b6 | 6010 | return TRUE; |
e86ce104 | 6011 | |
50bc7936 | 6012 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6013 | if (ent->plt.refcount > 0) |
6014 | break; | |
50bc7936 AM |
6015 | if (ent == NULL |
6016 | || fh->elf.root.root.string[0] != '.' | |
6017 | || fh->elf.root.root.string[1] == '\0') | |
6018 | return TRUE; | |
5bd4f169 | 6019 | |
50bc7936 AM |
6020 | /* Find the corresponding function descriptor symbol. Create it |
6021 | as undefined if necessary. */ | |
5bd4f169 | 6022 | |
50bc7936 AM |
6023 | fdh = get_fdh (fh, htab); |
6024 | if (fdh != NULL) | |
6025 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
6026 | || fdh->elf.root.type == bfd_link_hash_warning) | |
6027 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 6028 | |
50bc7936 | 6029 | if (fdh == NULL |
df131623 | 6030 | && !info->executable |
50bc7936 AM |
6031 | && (fh->elf.root.type == bfd_link_hash_undefined |
6032 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6033 | { | |
908b32fc | 6034 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6035 | if (fdh == NULL) |
6036 | return FALSE; | |
50bc7936 | 6037 | } |
648cca2c | 6038 | |
908b32fc | 6039 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6040 | code symbol is strong undefined, make the fake sym the same. |
6041 | If the function code symbol is defined, then force the fake | |
6042 | descriptor local; We can't support overriding of symbols in a | |
6043 | shared library on a fake descriptor. */ | |
908b32fc AM |
6044 | |
6045 | if (fdh != NULL | |
6046 | && fdh->fake | |
433817dd | 6047 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6048 | { |
433817dd AM |
6049 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6050 | { | |
6051 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6052 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6053 | } | |
6054 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6055 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6056 | { | |
6057 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6058 | } | |
908b32fc AM |
6059 | } |
6060 | ||
50bc7936 | 6061 | if (fdh != NULL |
f5385ebf | 6062 | && !fdh->elf.forced_local |
df131623 | 6063 | && (!info->executable |
f5385ebf AM |
6064 | || fdh->elf.def_dynamic |
6065 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6066 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6067 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6068 | { | |
6069 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6070 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6071 | return FALSE; |
f5385ebf AM |
6072 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6073 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6074 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6075 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6076 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6077 | { |
40d16e0b | 6078 | move_plt_plist (fh, fdh); |
f5385ebf | 6079 | fdh->elf.needs_plt = 1; |
e86ce104 | 6080 | } |
50bc7936 | 6081 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6082 | fdh->oh = fh; |
6083 | fh->oh = fdh; | |
e86ce104 AM |
6084 | } |
6085 | ||
50bc7936 AM |
6086 | /* Now that the info is on the function descriptor, clear the |
6087 | function code sym info. Any function code syms for which we | |
6088 | don't have a definition in a regular file, we force local. | |
6089 | This prevents a shared library from exporting syms that have | |
6090 | been imported from another library. Function code syms that | |
6091 | are really in the library we must leave global to prevent the | |
6092 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6093 | force_local = (!fh->elf.def_regular |
6094 | || fdh == NULL | |
6095 | || !fdh->elf.def_regular | |
6096 | || fdh->elf.forced_local); | |
50bc7936 AM |
6097 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6098 | ||
b34976b6 | 6099 | return TRUE; |
e86ce104 | 6100 | } |
40b8271b | 6101 | |
e86ce104 | 6102 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6103 | this hook to a) provide some gcc support functions, and b) transfer |
6104 | dynamic linking information gathered so far on function code symbol | |
6105 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6106 | |
b34976b6 | 6107 | static bfd_boolean |
4ce794b7 AM |
6108 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6109 | struct bfd_link_info *info) | |
e86ce104 AM |
6110 | { |
6111 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6112 | unsigned int i; |
deb0e272 AM |
6113 | const struct sfpr_def_parms funcs[] = |
6114 | { | |
6115 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6116 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6117 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6118 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6119 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6120 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6121 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6122 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6123 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6124 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6125 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6126 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6127 | }; | |
e86ce104 AM |
6128 | |
6129 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
6130 | if (htab->sfpr == NULL) |
6131 | /* We don't have any relocs. */ | |
b34976b6 | 6132 | return TRUE; |
82bd7b59 | 6133 | |
deb0e272 AM |
6134 | /* Provide any missing _save* and _rest* functions. */ |
6135 | htab->sfpr->size = 0; | |
6136 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6137 | if (!sfpr_define (info, &funcs[i])) | |
6138 | return FALSE; | |
82bd7b59 | 6139 | |
4ce794b7 | 6140 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6141 | |
eea6121a | 6142 | if (htab->sfpr->size == 0) |
8423293d | 6143 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6144 | |
b34976b6 | 6145 | return TRUE; |
e86ce104 AM |
6146 | } |
6147 | ||
6148 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6149 | regular object. The current definition is in some section of the | |
6150 | dynamic object, but we're not including those sections. We have to | |
6151 | change the definition to something the rest of the link can | |
6152 | understand. */ | |
6153 | ||
b34976b6 | 6154 | static bfd_boolean |
4ce794b7 AM |
6155 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6156 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6157 | { |
6158 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6159 | asection *s; |
e86ce104 AM |
6160 | |
6161 | htab = ppc_hash_table (info); | |
6162 | ||
6163 | /* Deal with function syms. */ | |
6164 | if (h->type == STT_FUNC | |
e054468f | 6165 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6166 | || h->needs_plt) |
e86ce104 AM |
6167 | { |
6168 | /* Clear procedure linkage table information for any symbol that | |
6169 | won't need a .plt entry. */ | |
411e1bfb AM |
6170 | struct plt_entry *ent; |
6171 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6172 | if (ent->plt.refcount > 0) | |
6173 | break; | |
8387904d | 6174 | if (ent == NULL |
e054468f AM |
6175 | || (h->type != STT_GNU_IFUNC |
6176 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6177 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6178 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6179 | { |
411e1bfb | 6180 | h->plt.plist = NULL; |
f5385ebf | 6181 | h->needs_plt = 0; |
40b8271b | 6182 | } |
5bd4f169 | 6183 | } |
bbd7ec4a | 6184 | else |
411e1bfb | 6185 | h->plt.plist = NULL; |
5bd4f169 AM |
6186 | |
6187 | /* If this is a weak symbol, and there is a real definition, the | |
6188 | processor independent code will have arranged for us to see the | |
6189 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6190 | if (h->u.weakdef != NULL) |
5bd4f169 | 6191 | { |
f6e332e6 AM |
6192 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6193 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6194 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6195 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6196 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6197 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6198 | return TRUE; |
5bd4f169 AM |
6199 | } |
6200 | ||
5bd4f169 AM |
6201 | /* If we are creating a shared library, we must presume that the |
6202 | only references to the symbol are via the global offset table. | |
6203 | For such cases we need not do anything here; the relocations will | |
6204 | be handled correctly by relocate_section. */ | |
6205 | if (info->shared) | |
b34976b6 | 6206 | return TRUE; |
5bd4f169 | 6207 | |
65f38f15 AM |
6208 | /* If there are no references to this symbol that do not use the |
6209 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6210 | if (!h->non_got_ref) |
b34976b6 | 6211 | return TRUE; |
65f38f15 | 6212 | |
b186458a JJ |
6213 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6214 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6215 | return TRUE; | |
6216 | ||
f4656909 | 6217 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6218 | { |
f4656909 AM |
6219 | struct ppc_link_hash_entry * eh; |
6220 | struct ppc_dyn_relocs *p; | |
65f38f15 | 6221 | |
f4656909 AM |
6222 | eh = (struct ppc_link_hash_entry *) h; |
6223 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6224 | { | |
6225 | s = p->sec->output_section; | |
6226 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6227 | break; | |
6228 | } | |
6229 | ||
6230 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6231 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6232 | if (p == NULL) | |
6233 | { | |
f5385ebf | 6234 | h->non_got_ref = 0; |
f4656909 AM |
6235 | return TRUE; |
6236 | } | |
65f38f15 AM |
6237 | } |
6238 | ||
5d35169e | 6239 | if (h->plt.plist != NULL) |
97b639ba AM |
6240 | { |
6241 | /* We should never get here, but unfortunately there are versions | |
6242 | of gcc out there that improperly (for this ABI) put initialized | |
6243 | function pointers, vtable refs and suchlike in read-only | |
6244 | sections. Allow them to proceed, but warn that this might | |
6245 | break at runtime. */ | |
6246 | (*_bfd_error_handler) | |
6247 | (_("copy reloc against `%s' requires lazy plt linking; " | |
6248 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
6249 | h->root.root.string); | |
6250 | } | |
5d35169e AM |
6251 | |
6252 | /* This is a reference to a symbol defined by a dynamic object which | |
6253 | is not a function. */ | |
6254 | ||
909272ee AM |
6255 | if (h->size == 0) |
6256 | { | |
6257 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6258 | h->root.root.string); | |
6259 | return TRUE; | |
6260 | } | |
6261 | ||
5bd4f169 AM |
6262 | /* We must allocate the symbol in our .dynbss section, which will |
6263 | become part of the .bss section of the executable. There will be | |
6264 | an entry for this symbol in the .dynsym section. The dynamic | |
6265 | object will contain position independent code, so all references | |
6266 | from the dynamic object to this symbol will go through the global | |
6267 | offset table. The dynamic linker will use the .dynsym entry to | |
6268 | determine the address it must put in the global offset table, so | |
6269 | both the dynamic object and the regular object will refer to the | |
6270 | same memory location for the variable. */ | |
5bd4f169 | 6271 | |
04c9666a AM |
6272 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6273 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6274 | runtime process image. We need to remember the offset into the |
6275 | .rela.bss section we are going to use. */ | |
6276 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
6277 | { | |
eea6121a | 6278 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6279 | h->needs_copy = 1; |
5bd4f169 AM |
6280 | } |
6281 | ||
4ce794b7 | 6282 | s = htab->dynbss; |
5bd4f169 | 6283 | |
027297b7 | 6284 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6285 | } |
6286 | ||
e86ce104 AM |
6287 | /* If given a function descriptor symbol, hide both the function code |
6288 | sym and the descriptor. */ | |
6289 | static void | |
4ce794b7 AM |
6290 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6291 | struct elf_link_hash_entry *h, | |
6292 | bfd_boolean force_local) | |
e86ce104 | 6293 | { |
34814b9f | 6294 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6295 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6296 | ||
34814b9f AM |
6297 | eh = (struct ppc_link_hash_entry *) h; |
6298 | if (eh->is_func_descriptor) | |
e86ce104 | 6299 | { |
34814b9f | 6300 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6301 | |
721956f4 | 6302 | if (fh == NULL) |
d1329ca3 AM |
6303 | { |
6304 | const char *p, *q; | |
6305 | struct ppc_link_hash_table *htab; | |
6306 | char save; | |
6307 | ||
6308 | /* We aren't supposed to use alloca in BFD because on | |
6309 | systems which do not have alloca the version in libiberty | |
6310 | calls xmalloc, which might cause the program to crash | |
6311 | when it runs out of memory. This function doesn't have a | |
6312 | return status, so there's no way to gracefully return an | |
6313 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6314 | accessed; It's either a string in an ELF string table, |
6315 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6316 | |
34814b9f | 6317 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6318 | save = *p; |
6319 | *(char *) p = '.'; | |
6320 | htab = ppc_hash_table (info); | |
34814b9f AM |
6321 | fh = (struct ppc_link_hash_entry *) |
6322 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6323 | *(char *) p = save; |
6324 | ||
6325 | /* Unfortunately, if it so happens that the string we were | |
6326 | looking for was allocated immediately before this string, | |
6327 | then we overwrote the string terminator. That's the only | |
6328 | reason the lookup should fail. */ | |
6329 | if (fh == NULL) | |
6330 | { | |
34814b9f AM |
6331 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6332 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6333 | --q, --p; |
34814b9f AM |
6334 | if (q < eh->elf.root.root.string && *p == '.') |
6335 | fh = (struct ppc_link_hash_entry *) | |
6336 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6337 | } |
6338 | if (fh != NULL) | |
6339 | { | |
34814b9f AM |
6340 | eh->oh = fh; |
6341 | fh->oh = eh; | |
d1329ca3 AM |
6342 | } |
6343 | } | |
e86ce104 | 6344 | if (fh != NULL) |
34814b9f | 6345 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6346 | } |
6347 | } | |
6348 | ||
411e1bfb | 6349 | static bfd_boolean |
8843416a AM |
6350 | get_sym_h (struct elf_link_hash_entry **hp, |
6351 | Elf_Internal_Sym **symp, | |
6352 | asection **symsecp, | |
6353 | char **tls_maskp, | |
6354 | Elf_Internal_Sym **locsymsp, | |
6355 | unsigned long r_symndx, | |
6356 | bfd *ibfd) | |
411e1bfb | 6357 | { |
0ffa91dd | 6358 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6359 | |
6360 | if (r_symndx >= symtab_hdr->sh_info) | |
6361 | { | |
6362 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6363 | struct elf_link_hash_entry *h; | |
6364 | ||
6365 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6366 | while (h->root.type == bfd_link_hash_indirect | |
6367 | || h->root.type == bfd_link_hash_warning) | |
6368 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6369 | ||
6370 | if (hp != NULL) | |
6371 | *hp = h; | |
6372 | ||
6373 | if (symp != NULL) | |
6374 | *symp = NULL; | |
6375 | ||
6376 | if (symsecp != NULL) | |
6377 | { | |
6378 | asection *symsec = NULL; | |
6379 | if (h->root.type == bfd_link_hash_defined | |
6380 | || h->root.type == bfd_link_hash_defweak) | |
6381 | symsec = h->root.u.def.section; | |
6382 | *symsecp = symsec; | |
6383 | } | |
6384 | ||
e7b938ca | 6385 | if (tls_maskp != NULL) |
411e1bfb AM |
6386 | { |
6387 | struct ppc_link_hash_entry *eh; | |
6388 | ||
6389 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6390 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6391 | } |
6392 | } | |
6393 | else | |
6394 | { | |
6395 | Elf_Internal_Sym *sym; | |
6396 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6397 | ||
6398 | if (locsyms == NULL) | |
6399 | { | |
6400 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6401 | if (locsyms == NULL) | |
6402 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6403 | symtab_hdr->sh_info, | |
6404 | 0, NULL, NULL, NULL); | |
6405 | if (locsyms == NULL) | |
6406 | return FALSE; | |
6407 | *locsymsp = locsyms; | |
6408 | } | |
6409 | sym = locsyms + r_symndx; | |
6410 | ||
6411 | if (hp != NULL) | |
6412 | *hp = NULL; | |
6413 | ||
6414 | if (symp != NULL) | |
6415 | *symp = sym; | |
6416 | ||
6417 | if (symsecp != NULL) | |
cb33740c | 6418 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6419 | |
e7b938ca | 6420 | if (tls_maskp != NULL) |
411e1bfb AM |
6421 | { |
6422 | struct got_entry **lgot_ents; | |
e7b938ca | 6423 | char *tls_mask; |
411e1bfb | 6424 | |
e7b938ca | 6425 | tls_mask = NULL; |
411e1bfb AM |
6426 | lgot_ents = elf_local_got_ents (ibfd); |
6427 | if (lgot_ents != NULL) | |
6428 | { | |
e054468f AM |
6429 | struct plt_entry **local_plt = (struct plt_entry **) |
6430 | (lgot_ents + symtab_hdr->sh_info); | |
6431 | char *lgot_masks = (char *) | |
6432 | (local_plt + symtab_hdr->sh_info); | |
e7b938ca | 6433 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6434 | } |
e7b938ca | 6435 | *tls_maskp = tls_mask; |
411e1bfb AM |
6436 | } |
6437 | } | |
6438 | return TRUE; | |
6439 | } | |
6440 | ||
e7b938ca | 6441 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6442 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6443 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6444 | |
6445 | static int | |
3a71aa26 AM |
6446 | get_tls_mask (char **tls_maskp, |
6447 | unsigned long *toc_symndx, | |
6448 | bfd_vma *toc_addend, | |
0d4792f7 | 6449 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6450 | const Elf_Internal_Rela *rel, |
6451 | bfd *ibfd) | |
411e1bfb AM |
6452 | { |
6453 | unsigned long r_symndx; | |
0d4792f7 | 6454 | int next_r; |
411e1bfb AM |
6455 | struct elf_link_hash_entry *h; |
6456 | Elf_Internal_Sym *sym; | |
6457 | asection *sec; | |
6458 | bfd_vma off; | |
6459 | ||
6460 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6461 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6462 | return 0; |
411e1bfb | 6463 | |
e7b938ca | 6464 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6465 | || sec == NULL |
7c8fe5c4 | 6466 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6467 | return 1; |
411e1bfb AM |
6468 | |
6469 | /* Look inside a TOC section too. */ | |
6470 | if (h != NULL) | |
6471 | { | |
6472 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6473 | off = h->root.u.def.value; | |
6474 | } | |
6475 | else | |
6476 | off = sym->st_value; | |
6477 | off += rel->r_addend; | |
6478 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6479 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6480 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6481 | if (toc_symndx != NULL) |
6482 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6483 | if (toc_addend != NULL) |
6484 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6485 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6486 | return 0; | |
0d4792f7 AM |
6487 | if ((h == NULL |
6488 | || ((h->root.type == bfd_link_hash_defined | |
6489 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6490 | && !h->def_dynamic)) |
0d4792f7 AM |
6491 | && (next_r == -1 || next_r == -2)) |
6492 | return 1 - next_r; | |
951fd09b | 6493 | return 1; |
411e1bfb AM |
6494 | } |
6495 | ||
754021d0 | 6496 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6497 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6498 | |
6499 | static bfd_boolean | |
6500 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6501 | { | |
6502 | struct ppc_link_hash_entry *eh; | |
6503 | asection *sym_sec; | |
74f0fb50 | 6504 | struct _opd_sec_data *opd; |
754021d0 AM |
6505 | |
6506 | if (h->root.type == bfd_link_hash_indirect) | |
6507 | return TRUE; | |
6508 | ||
6509 | if (h->root.type == bfd_link_hash_warning) | |
6510 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6511 | ||
6512 | if (h->root.type != bfd_link_hash_defined | |
6513 | && h->root.type != bfd_link_hash_defweak) | |
6514 | return TRUE; | |
6515 | ||
6516 | eh = (struct ppc_link_hash_entry *) h; | |
6517 | if (eh->adjust_done) | |
6518 | return TRUE; | |
6519 | ||
6520 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6521 | opd = get_opd_info (sym_sec); |
6522 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6523 | { |
74f0fb50 | 6524 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6525 | if (adjust == -1) |
6526 | { | |
6527 | /* This entry has been deleted. */ | |
b3fac117 | 6528 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6529 | if (dsec == NULL) |
6530 | { | |
6531 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6532 | if (elf_discarded_section (dsec)) | |
6533 | { | |
b3fac117 | 6534 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6535 | break; |
6536 | } | |
6537 | } | |
4025353c | 6538 | eh->elf.root.u.def.value = 0; |
81688140 | 6539 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6540 | } |
6541 | else | |
6542 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6543 | eh->adjust_done = 1; |
6544 | } | |
6545 | return TRUE; | |
6546 | } | |
6547 | ||
8c1d1bb8 AM |
6548 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6549 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6550 | have already been determined. */ | |
6551 | ||
6552 | static bfd_boolean | |
6553 | dec_dynrel_count (bfd_vma r_info, | |
6554 | asection *sec, | |
6555 | struct bfd_link_info *info, | |
6556 | Elf_Internal_Sym **local_syms, | |
6557 | struct elf_link_hash_entry *h, | |
6558 | asection *sym_sec) | |
6559 | { | |
6560 | enum elf_ppc64_reloc_type r_type; | |
6561 | struct ppc_dyn_relocs *p; | |
6562 | struct ppc_dyn_relocs **pp; | |
6563 | ||
6564 | /* Can this reloc be dynamic? This switch, and later tests here | |
6565 | should be kept in sync with the code in check_relocs. */ | |
6566 | r_type = ELF64_R_TYPE (r_info); | |
6567 | switch (r_type) | |
6568 | { | |
6569 | default: | |
6570 | return TRUE; | |
6571 | ||
6572 | case R_PPC64_TPREL16: | |
6573 | case R_PPC64_TPREL16_LO: | |
6574 | case R_PPC64_TPREL16_HI: | |
6575 | case R_PPC64_TPREL16_HA: | |
6576 | case R_PPC64_TPREL16_DS: | |
6577 | case R_PPC64_TPREL16_LO_DS: | |
6578 | case R_PPC64_TPREL16_HIGHER: | |
6579 | case R_PPC64_TPREL16_HIGHERA: | |
6580 | case R_PPC64_TPREL16_HIGHEST: | |
6581 | case R_PPC64_TPREL16_HIGHESTA: | |
6582 | if (!info->shared) | |
6583 | return TRUE; | |
6584 | ||
6585 | case R_PPC64_TPREL64: | |
6586 | case R_PPC64_DTPMOD64: | |
6587 | case R_PPC64_DTPREL64: | |
6588 | case R_PPC64_ADDR64: | |
6589 | case R_PPC64_REL30: | |
6590 | case R_PPC64_REL32: | |
6591 | case R_PPC64_REL64: | |
6592 | case R_PPC64_ADDR14: | |
6593 | case R_PPC64_ADDR14_BRNTAKEN: | |
6594 | case R_PPC64_ADDR14_BRTAKEN: | |
6595 | case R_PPC64_ADDR16: | |
6596 | case R_PPC64_ADDR16_DS: | |
6597 | case R_PPC64_ADDR16_HA: | |
6598 | case R_PPC64_ADDR16_HI: | |
6599 | case R_PPC64_ADDR16_HIGHER: | |
6600 | case R_PPC64_ADDR16_HIGHERA: | |
6601 | case R_PPC64_ADDR16_HIGHEST: | |
6602 | case R_PPC64_ADDR16_HIGHESTA: | |
6603 | case R_PPC64_ADDR16_LO: | |
6604 | case R_PPC64_ADDR16_LO_DS: | |
6605 | case R_PPC64_ADDR24: | |
6606 | case R_PPC64_ADDR32: | |
6607 | case R_PPC64_UADDR16: | |
6608 | case R_PPC64_UADDR32: | |
6609 | case R_PPC64_UADDR64: | |
6610 | case R_PPC64_TOC: | |
6611 | break; | |
6612 | } | |
6613 | ||
6614 | if (local_syms != NULL) | |
6615 | { | |
6616 | unsigned long r_symndx; | |
6617 | Elf_Internal_Sym *sym; | |
6618 | bfd *ibfd = sec->owner; | |
6619 | ||
6620 | r_symndx = ELF64_R_SYM (r_info); | |
6621 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6622 | return FALSE; | |
6623 | } | |
6624 | ||
6625 | if ((info->shared | |
1d483afe | 6626 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 AM |
6627 | || (h != NULL |
6628 | && (!info->symbolic | |
6629 | || h->root.type == bfd_link_hash_defweak | |
6630 | || !h->def_regular)))) | |
6631 | || (ELIMINATE_COPY_RELOCS | |
6632 | && !info->shared | |
6633 | && h != NULL | |
6634 | && (h->root.type == bfd_link_hash_defweak | |
6635 | || !h->def_regular))) | |
6636 | ; | |
6637 | else | |
6638 | return TRUE; | |
6639 | ||
6640 | if (h != NULL) | |
6641 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6642 | else |
6edfbbad | 6643 | { |
60124e18 AM |
6644 | if (sym_sec != NULL) |
6645 | { | |
6646 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6647 | pp = (struct ppc_dyn_relocs **) vpp; | |
6648 | } | |
6649 | else | |
6650 | { | |
6651 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6652 | pp = (struct ppc_dyn_relocs **) vpp; | |
6653 | } | |
6654 | ||
6655 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6656 | with local syms for a given section. Don't report a dynreloc | |
6657 | miscount. */ | |
6658 | if (*pp == NULL) | |
6659 | return TRUE; | |
6edfbbad | 6660 | } |
8c1d1bb8 AM |
6661 | |
6662 | while ((p = *pp) != NULL) | |
6663 | { | |
6664 | if (p->sec == sec) | |
6665 | { | |
1d483afe | 6666 | if (!must_be_dyn_reloc (info, r_type)) |
8c1d1bb8 AM |
6667 | p->pc_count -= 1; |
6668 | p->count -= 1; | |
6669 | if (p->count == 0) | |
6670 | *pp = p->next; | |
6671 | return TRUE; | |
6672 | } | |
6673 | pp = &p->next; | |
6674 | } | |
6675 | ||
6676 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6677 | sec->owner, sec); | |
6678 | bfd_set_error (bfd_error_bad_value); | |
6679 | return FALSE; | |
6680 | } | |
6681 | ||
754021d0 AM |
6682 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6683 | only remove those associated with functions in discarded link-once | |
6684 | sections, or weakly defined functions that have been overridden. It | |
6685 | would be possible to remove many more entries for statically linked | |
6686 | applications. */ | |
6687 | ||
b34976b6 | 6688 | bfd_boolean |
3f764659 JJ |
6689 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
6690 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
6691 | { |
6692 | bfd *ibfd; | |
754021d0 | 6693 | bfd_boolean some_edited = FALSE; |
3f764659 | 6694 | asection *need_pad = NULL; |
1e2f5b6e | 6695 | |
411e1bfb | 6696 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6697 | { |
6698 | asection *sec; | |
6699 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6700 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6701 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6702 | struct elf_link_hash_entry **sym_hashes; |
6703 | bfd_vma offset; | |
74f0fb50 | 6704 | struct _opd_sec_data *opd; |
3f764659 JJ |
6705 | bfd_boolean need_edit, add_aux_fields; |
6706 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6707 | |
6708 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6709 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6710 | continue; |
6711 | ||
4b85d634 AM |
6712 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6713 | continue; | |
6714 | ||
1e2f5b6e AM |
6715 | if (sec->output_section == bfd_abs_section_ptr) |
6716 | continue; | |
6717 | ||
6718 | /* Look through the section relocs. */ | |
6719 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6720 | continue; | |
6721 | ||
6cdc0ccc | 6722 | local_syms = NULL; |
0ffa91dd | 6723 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6724 | sym_hashes = elf_sym_hashes (ibfd); |
6725 | ||
6726 | /* Read the relocations. */ | |
4ce794b7 | 6727 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6728 | info->keep_memory); |
1e2f5b6e | 6729 | if (relstart == NULL) |
b34976b6 | 6730 | return FALSE; |
1e2f5b6e AM |
6731 | |
6732 | /* First run through the relocs to check they are sane, and to | |
6733 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6734 | need_edit = FALSE; |
3f764659 | 6735 | need_pad = sec; |
1e2f5b6e AM |
6736 | offset = 0; |
6737 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6738 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6739 | { |
04c9666a | 6740 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6741 | unsigned long r_symndx; |
6742 | asection *sym_sec; | |
6743 | struct elf_link_hash_entry *h; | |
6744 | Elf_Internal_Sym *sym; | |
6745 | ||
3f764659 | 6746 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6747 | only interested in the reloc pointing to a function entry |
6748 | point. */ | |
50bc7936 AM |
6749 | if (rel->r_offset != offset |
6750 | || rel + 1 >= relend | |
6751 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6752 | { |
6753 | /* If someone messes with .opd alignment then after a | |
6754 | "ld -r" we might have padding in the middle of .opd. | |
6755 | Also, there's nothing to prevent someone putting | |
6756 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6757 | optimization for them! */ |
3f764659 | 6758 | broken_opd: |
1e2f5b6e | 6759 | (*_bfd_error_handler) |
d003868e | 6760 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6761 | need_edit = FALSE; |
1e2f5b6e AM |
6762 | break; |
6763 | } | |
6764 | ||
50bc7936 AM |
6765 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6766 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6767 | { | |
6768 | (*_bfd_error_handler) | |
d003868e AM |
6769 | (_("%B: unexpected reloc type %u in .opd section"), |
6770 | ibfd, r_type); | |
50bc7936 AM |
6771 | need_edit = FALSE; |
6772 | break; | |
6773 | } | |
6774 | ||
1e2f5b6e | 6775 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6776 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6777 | r_symndx, ibfd)) | |
50bc7936 | 6778 | goto error_ret; |
1e2f5b6e AM |
6779 | |
6780 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6781 | { | |
411e1bfb AM |
6782 | const char *sym_name; |
6783 | if (h != NULL) | |
6784 | sym_name = h->root.root.string; | |
6785 | else | |
26c61ae5 L |
6786 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6787 | sym_sec); | |
411e1bfb | 6788 | |
1e2f5b6e | 6789 | (*_bfd_error_handler) |
d003868e AM |
6790 | (_("%B: undefined sym `%s' in .opd section"), |
6791 | ibfd, sym_name); | |
b34976b6 | 6792 | need_edit = FALSE; |
1e2f5b6e AM |
6793 | break; |
6794 | } | |
6795 | ||
51020317 AM |
6796 | /* opd entries are always for functions defined in the |
6797 | current input bfd. If the symbol isn't defined in the | |
6798 | input bfd, then we won't be using the function in this | |
6799 | bfd; It must be defined in a linkonce section in another | |
6800 | bfd, or is weak. It's also possible that we are | |
6801 | discarding the function due to a linker script /DISCARD/, | |
6802 | which we test for via the output_section. */ | |
6803 | if (sym_sec->owner != ibfd | |
6804 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6805 | need_edit = TRUE; |
1e2f5b6e | 6806 | |
50bc7936 | 6807 | rel += 2; |
3f764659 JJ |
6808 | if (rel == relend |
6809 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6810 | { | |
6811 | if (sec->size == offset + 24) | |
6812 | { | |
6813 | need_pad = NULL; | |
6814 | break; | |
6815 | } | |
6816 | if (rel == relend && sec->size == offset + 16) | |
6817 | { | |
6818 | cnt_16b++; | |
6819 | break; | |
6820 | } | |
6821 | goto broken_opd; | |
6822 | } | |
6823 | ||
6824 | if (rel->r_offset == offset + 24) | |
6825 | offset += 24; | |
6826 | else if (rel->r_offset != offset + 16) | |
6827 | goto broken_opd; | |
6828 | else if (rel + 1 < relend | |
6829 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6830 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6831 | { | |
6832 | offset += 16; | |
6833 | cnt_16b++; | |
6834 | } | |
6835 | else if (rel + 2 < relend | |
6836 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6837 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6838 | { | |
6839 | offset += 24; | |
6840 | rel += 1; | |
6841 | } | |
6842 | else | |
6843 | goto broken_opd; | |
1e2f5b6e AM |
6844 | } |
6845 | ||
3f764659 JJ |
6846 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6847 | ||
6848 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6849 | { |
6850 | Elf_Internal_Rela *write_rel; | |
6851 | bfd_byte *rptr, *wptr; | |
983bddc8 | 6852 | bfd_byte *new_contents; |
b34976b6 | 6853 | bfd_boolean skip; |
3f764659 | 6854 | long opd_ent_size; |
74f0fb50 AM |
6855 | bfd_size_type amt; |
6856 | ||
983bddc8 | 6857 | new_contents = NULL; |
74f0fb50 AM |
6858 | amt = sec->size * sizeof (long) / 8; |
6859 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
6860 | opd->adjust = bfd_zalloc (obfd, amt); | |
6861 | if (opd->adjust == NULL) | |
6862 | return FALSE; | |
6863 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
6864 | |
6865 | /* This seems a waste of time as input .opd sections are all | |
6866 | zeros as generated by gcc, but I suppose there's no reason | |
6867 | this will always be so. We might start putting something in | |
6868 | the third word of .opd entries. */ | |
6869 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6870 | { | |
eea6121a AM |
6871 | bfd_byte *loc; |
6872 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6873 | { |
eea6121a AM |
6874 | if (loc != NULL) |
6875 | free (loc); | |
50bc7936 | 6876 | error_ret: |
6cdc0ccc AM |
6877 | if (local_syms != NULL |
6878 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6879 | free (local_syms); | |
6cdc0ccc AM |
6880 | if (elf_section_data (sec)->relocs != relstart) |
6881 | free (relstart); | |
b34976b6 | 6882 | return FALSE; |
6cdc0ccc | 6883 | } |
1e2f5b6e AM |
6884 | sec->contents = loc; |
6885 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6886 | } | |
6887 | ||
6888 | elf_section_data (sec)->relocs = relstart; | |
6889 | ||
3f764659 | 6890 | new_contents = sec->contents; |
3f764659 JJ |
6891 | if (add_aux_fields) |
6892 | { | |
6893 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6894 | if (new_contents == NULL) | |
6895 | return FALSE; | |
6896 | need_pad = FALSE; | |
3f764659 | 6897 | } |
b4f4e59f AM |
6898 | wptr = new_contents; |
6899 | rptr = sec->contents; | |
3f764659 | 6900 | |
1e2f5b6e | 6901 | write_rel = relstart; |
b34976b6 | 6902 | skip = FALSE; |
1e2f5b6e | 6903 | offset = 0; |
3f764659 | 6904 | opd_ent_size = 0; |
1e2f5b6e AM |
6905 | for (rel = relstart; rel < relend; rel++) |
6906 | { | |
50bc7936 AM |
6907 | unsigned long r_symndx; |
6908 | asection *sym_sec; | |
6909 | struct elf_link_hash_entry *h; | |
6910 | Elf_Internal_Sym *sym; | |
6911 | ||
6912 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6913 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6914 | r_symndx, ibfd)) |
50bc7936 AM |
6915 | goto error_ret; |
6916 | ||
1e2f5b6e AM |
6917 | if (rel->r_offset == offset) |
6918 | { | |
50bc7936 | 6919 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6920 | |
6921 | /* See if the .opd entry is full 24 byte or | |
6922 | 16 byte (with fd_aux entry overlapped with next | |
6923 | fd_func). */ | |
6924 | opd_ent_size = 24; | |
6925 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6926 | || (rel + 3 < relend | |
6927 | && rel[2].r_offset == offset + 16 | |
6928 | && rel[3].r_offset == offset + 24 | |
6929 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6930 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6931 | opd_ent_size = 16; | |
6932 | ||
4025353c AM |
6933 | if (h != NULL |
6934 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6935 | { |
6936 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6937 | ppc_hash_table (info)); | |
6938 | if (fdh != NULL | |
6939 | && fdh->elf.root.type != bfd_link_hash_defined | |
6940 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6941 | fdh = NULL; | |
6942 | } | |
1e2f5b6e | 6943 | |
51020317 AM |
6944 | skip = (sym_sec->owner != ibfd |
6945 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6946 | if (skip) |
6947 | { | |
4025353c | 6948 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6949 | { |
6950 | /* Arrange for the function descriptor sym | |
6951 | to be dropped. */ | |
d6fe2dc1 AM |
6952 | fdh->elf.root.u.def.value = 0; |
6953 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6954 | } |
74f0fb50 | 6955 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6956 | } |
6957 | else | |
1e2f5b6e AM |
6958 | { |
6959 | /* We'll be keeping this opd entry. */ | |
6960 | ||
4025353c | 6961 | if (fdh != NULL) |
1e2f5b6e | 6962 | { |
754021d0 AM |
6963 | /* Redefine the function descriptor symbol to |
6964 | this location in the opd section. It is | |
6965 | necessary to update the value here rather | |
6966 | than using an array of adjustments as we do | |
6967 | for local symbols, because various places | |
6968 | in the generic ELF code use the value | |
6969 | stored in u.def.value. */ | |
3f764659 | 6970 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6971 | fdh->adjust_done = 1; |
1e2f5b6e | 6972 | } |
754021d0 AM |
6973 | |
6974 | /* Local syms are a bit tricky. We could | |
6975 | tweak them as they can be cached, but | |
6976 | we'd need to look through the local syms | |
6977 | for the function descriptor sym which we | |
6978 | don't have at the moment. So keep an | |
6979 | array of adjustments. */ | |
74f0fb50 | 6980 | opd->adjust[rel->r_offset / 8] |
3f764659 | 6981 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
6982 | |
6983 | if (wptr != rptr) | |
3f764659 JJ |
6984 | memcpy (wptr, rptr, opd_ent_size); |
6985 | wptr += opd_ent_size; | |
6986 | if (add_aux_fields && opd_ent_size == 16) | |
6987 | { | |
6988 | memset (wptr, '\0', 8); | |
6989 | wptr += 8; | |
6990 | } | |
1e2f5b6e | 6991 | } |
3f764659 JJ |
6992 | rptr += opd_ent_size; |
6993 | offset += opd_ent_size; | |
1e2f5b6e AM |
6994 | } |
6995 | ||
50bc7936 AM |
6996 | if (skip) |
6997 | { | |
60124e18 AM |
6998 | if (!NO_OPD_RELOCS |
6999 | && !info->relocatable | |
18d944df AM |
7000 | && !dec_dynrel_count (rel->r_info, sec, info, |
7001 | NULL, h, sym_sec)) | |
8c1d1bb8 | 7002 | goto error_ret; |
50bc7936 AM |
7003 | } |
7004 | else | |
1e2f5b6e | 7005 | { |
50bc7936 AM |
7006 | /* We need to adjust any reloc offsets to point to the |
7007 | new opd entries. While we're at it, we may as well | |
7008 | remove redundant relocs. */ | |
74f0fb50 | 7009 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7010 | if (write_rel != rel) |
7011 | memcpy (write_rel, rel, sizeof (*rel)); | |
7012 | ++write_rel; | |
7013 | } | |
7014 | } | |
7015 | ||
3f764659 | 7016 | sec->size = wptr - new_contents; |
1e2f5b6e | 7017 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7018 | if (add_aux_fields) |
7019 | { | |
7020 | free (sec->contents); | |
7021 | sec->contents = new_contents; | |
7022 | } | |
7023 | ||
05bf9422 | 7024 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
7025 | elf_bfd_final_link if we are emitting relocs. */ |
7026 | elf_section_data (sec)->rel_hdr.sh_size | |
7027 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
7028 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 7029 | some_edited = TRUE; |
1e2f5b6e | 7030 | } |
6cdc0ccc | 7031 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7032 | free (relstart); |
6cdc0ccc | 7033 | |
411e1bfb AM |
7034 | if (local_syms != NULL |
7035 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7036 | { | |
7037 | if (!info->keep_memory) | |
7038 | free (local_syms); | |
7039 | else | |
7040 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7041 | } | |
7042 | } | |
7043 | ||
754021d0 AM |
7044 | if (some_edited) |
7045 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7046 | ||
3f764659 JJ |
7047 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7048 | long, add a 8 byte padding after it. */ | |
7049 | if (need_pad != NULL && !info->relocatable) | |
7050 | { | |
7051 | bfd_byte *p; | |
7052 | ||
7053 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7054 | { | |
7055 | BFD_ASSERT (need_pad->size > 0); | |
7056 | ||
7057 | p = bfd_malloc (need_pad->size + 8); | |
7058 | if (p == NULL) | |
7059 | return FALSE; | |
699733f6 | 7060 | |
3f764659 JJ |
7061 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7062 | p, 0, need_pad->size)) | |
7063 | return FALSE; | |
7064 | ||
7065 | need_pad->contents = p; | |
7066 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7067 | } | |
7068 | else | |
7069 | { | |
7070 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7071 | if (p == NULL) | |
7072 | return FALSE; | |
7073 | ||
7074 | need_pad->contents = p; | |
7075 | } | |
7076 | ||
7077 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7078 | need_pad->size += 8; | |
7079 | } | |
7080 | ||
411e1bfb AM |
7081 | return TRUE; |
7082 | } | |
7083 | ||
e1918d23 | 7084 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7085 | |
e1918d23 | 7086 | asection * |
4ce794b7 | 7087 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 7088 | { |
411e1bfb AM |
7089 | struct ppc_link_hash_table *htab; |
7090 | ||
411e1bfb | 7091 | htab = ppc_hash_table (info); |
3a71aa26 AM |
7092 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7093 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7094 | FALSE, FALSE, TRUE)); | |
7095 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) | |
7096 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7097 | FALSE, FALSE, TRUE)); | |
7098 | return _bfd_elf_tls_setup (obfd, info); | |
7099 | } | |
8387904d | 7100 | |
3a71aa26 AM |
7101 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7102 | HASH1 or HASH2. */ | |
8387904d | 7103 | |
3a71aa26 AM |
7104 | static bfd_boolean |
7105 | branch_reloc_hash_match (const bfd *ibfd, | |
7106 | const Elf_Internal_Rela *rel, | |
7107 | const struct ppc_link_hash_entry *hash1, | |
7108 | const struct ppc_link_hash_entry *hash2) | |
7109 | { | |
7110 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7111 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7112 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7113 | ||
e054468f | 7114 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7115 | { |
3a71aa26 AM |
7116 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7117 | struct elf_link_hash_entry *h; | |
8387904d | 7118 | |
3a71aa26 AM |
7119 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
7120 | while (h->root.type == bfd_link_hash_indirect | |
7121 | || h->root.type == bfd_link_hash_warning) | |
7122 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7123 | if (h == &hash1->elf || h == &hash2->elf) | |
7124 | return TRUE; | |
a48ebf4d | 7125 | } |
3a71aa26 | 7126 | return FALSE; |
951fd09b | 7127 | } |
411e1bfb | 7128 | |
951fd09b AM |
7129 | /* Run through all the TLS relocs looking for optimization |
7130 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7131 | a preliminary section layout so that we know the TLS segment | |
7132 | offsets. We can't optimize earlier because some optimizations need | |
7133 | to know the tp offset, and we need to optimize before allocating | |
7134 | dynamic relocations. */ | |
7135 | ||
7136 | bfd_boolean | |
4ce794b7 | 7137 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
7138 | { |
7139 | bfd *ibfd; | |
7140 | asection *sec; | |
7141 | struct ppc_link_hash_table *htab; | |
102890f0 | 7142 | int pass; |
951fd09b | 7143 | |
1d483afe | 7144 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7145 | return TRUE; |
7146 | ||
951fd09b | 7147 | htab = ppc_hash_table (info); |
411e1bfb AM |
7148 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7149 | { | |
7150 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
7151 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
7152 | unsigned char *toc_ref = NULL; | |
411e1bfb | 7153 | |
102890f0 AM |
7154 | /* Look at all the sections for this file. Make two passes over |
7155 | the relocs. On the first pass, mark toc entries involved | |
7156 | with tls relocs, and check that tls relocs involved in | |
7157 | setting up a tls_get_addr call are indeed followed by such a | |
7158 | call. If they are not, exclude them from the optimizations | |
7159 | done on the second pass. */ | |
7160 | for (pass = 0; pass < 2; ++pass) | |
7161 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7162 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7163 | { | |
7164 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 7165 | |
102890f0 AM |
7166 | /* Read the relocations. */ |
7167 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7168 | info->keep_memory); | |
7169 | if (relstart == NULL) | |
7170 | return FALSE; | |
411e1bfb | 7171 | |
102890f0 AM |
7172 | relend = relstart + sec->reloc_count; |
7173 | for (rel = relstart; rel < relend; rel++) | |
7174 | { | |
7175 | enum elf_ppc64_reloc_type r_type; | |
7176 | unsigned long r_symndx; | |
7177 | struct elf_link_hash_entry *h; | |
7178 | Elf_Internal_Sym *sym; | |
7179 | asection *sym_sec; | |
7180 | char *tls_mask; | |
7181 | char tls_set, tls_clear, tls_type = 0; | |
7182 | bfd_vma value; | |
7183 | bfd_boolean ok_tprel, is_local; | |
7184 | long toc_ref_index = 0; | |
7185 | int expecting_tls_get_addr = 0; | |
411e1bfb | 7186 | |
102890f0 AM |
7187 | r_symndx = ELF64_R_SYM (rel->r_info); |
7188 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7189 | r_symndx, ibfd)) | |
7190 | { | |
7191 | err_free_rel: | |
7192 | if (elf_section_data (sec)->relocs != relstart) | |
7193 | free (relstart); | |
7194 | if (toc_ref != NULL) | |
7195 | free (toc_ref); | |
7196 | if (locsyms != NULL | |
0ffa91dd | 7197 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7198 | != (unsigned char *) locsyms)) |
7199 | free (locsyms); | |
7200 | return FALSE; | |
7201 | } | |
411e1bfb | 7202 | |
102890f0 AM |
7203 | if (h != NULL) |
7204 | { | |
7205 | if (h->root.type != bfd_link_hash_defined | |
7206 | && h->root.type != bfd_link_hash_defweak) | |
7207 | continue; | |
7208 | value = h->root.u.def.value; | |
7209 | } | |
7210 | else | |
7211 | /* Symbols referenced by TLS relocs must be of type | |
7212 | STT_TLS. So no need for .opd local sym adjust. */ | |
7213 | value = sym->st_value; | |
7214 | ||
7215 | ok_tprel = FALSE; | |
7216 | is_local = FALSE; | |
7217 | if (h == NULL | |
7218 | || !h->def_dynamic) | |
7219 | { | |
7220 | is_local = TRUE; | |
7221 | value += sym_sec->output_offset; | |
7222 | value += sym_sec->output_section->vma; | |
7223 | value -= htab->elf.tls_sec->vma; | |
7224 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7225 | < (bfd_vma) 1 << 32); | |
7226 | } | |
951fd09b | 7227 | |
102890f0 AM |
7228 | r_type = ELF64_R_TYPE (rel->r_info); |
7229 | switch (r_type) | |
7230 | { | |
7231 | case R_PPC64_GOT_TLSLD16: | |
7232 | case R_PPC64_GOT_TLSLD16_LO: | |
7233 | expecting_tls_get_addr = 1; | |
7234 | /* Fall thru */ | |
7235 | ||
7236 | case R_PPC64_GOT_TLSLD16_HI: | |
7237 | case R_PPC64_GOT_TLSLD16_HA: | |
7238 | /* These relocs should never be against a symbol | |
7239 | defined in a shared lib. Leave them alone if | |
7240 | that turns out to be the case. */ | |
7241 | if (!is_local) | |
7242 | continue; | |
411e1bfb | 7243 | |
102890f0 | 7244 | /* LD -> LE */ |
411e1bfb | 7245 | tls_set = 0; |
102890f0 AM |
7246 | tls_clear = TLS_LD; |
7247 | tls_type = TLS_TLS | TLS_LD; | |
7248 | break; | |
411e1bfb | 7249 | |
102890f0 AM |
7250 | case R_PPC64_GOT_TLSGD16: |
7251 | case R_PPC64_GOT_TLSGD16_LO: | |
7252 | expecting_tls_get_addr = 1; | |
7253 | /* Fall thru */ | |
7254 | ||
7255 | case R_PPC64_GOT_TLSGD16_HI: | |
7256 | case R_PPC64_GOT_TLSGD16_HA: | |
7257 | if (ok_tprel) | |
7258 | /* GD -> LE */ | |
411e1bfb | 7259 | tls_set = 0; |
102890f0 AM |
7260 | else |
7261 | /* GD -> IE */ | |
7262 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7263 | tls_clear = TLS_GD; | |
7264 | tls_type = TLS_TLS | TLS_GD; | |
7265 | break; | |
7266 | ||
7267 | case R_PPC64_GOT_TPREL16_DS: | |
7268 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7269 | case R_PPC64_GOT_TPREL16_HI: | |
7270 | case R_PPC64_GOT_TPREL16_HA: | |
7271 | if (ok_tprel) | |
7272 | { | |
7273 | /* IE -> LE */ | |
7274 | tls_set = 0; | |
7275 | tls_clear = TLS_TPREL; | |
7276 | tls_type = TLS_TLS | TLS_TPREL; | |
7277 | break; | |
7278 | } | |
411e1bfb AM |
7279 | continue; |
7280 | ||
102890f0 AM |
7281 | case R_PPC64_TOC16: |
7282 | case R_PPC64_TOC16_LO: | |
7283 | case R_PPC64_TLS: | |
727fc41e AM |
7284 | case R_PPC64_TLSGD: |
7285 | case R_PPC64_TLSLD: | |
102890f0 AM |
7286 | if (sym_sec == NULL || sym_sec != toc) |
7287 | continue; | |
7288 | ||
7289 | /* Mark this toc entry as referenced by a TLS | |
7290 | code sequence. We can do that now in the | |
7291 | case of R_PPC64_TLS, and after checking for | |
7292 | tls_get_addr for the TOC16 relocs. */ | |
7293 | if (toc_ref == NULL) | |
7294 | { | |
7295 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7296 | if (toc_ref == NULL) | |
7297 | goto err_free_rel; | |
7298 | } | |
7299 | if (h != NULL) | |
7300 | value = h->root.u.def.value; | |
7301 | else | |
7302 | value = sym->st_value; | |
7303 | value += rel->r_addend; | |
7304 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7305 | toc_ref_index = value / 8; | |
727fc41e AM |
7306 | if (r_type == R_PPC64_TLS |
7307 | || r_type == R_PPC64_TLSGD | |
7308 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7309 | { |
7310 | toc_ref[toc_ref_index] = 1; | |
7311 | continue; | |
7312 | } | |
7313 | ||
7314 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7315 | continue; | |
7316 | ||
7317 | tls_set = 0; | |
7318 | tls_clear = 0; | |
7319 | expecting_tls_get_addr = 2; | |
7320 | break; | |
7321 | ||
7322 | case R_PPC64_TPREL64: | |
7323 | if (pass == 0 | |
7324 | || sec != toc | |
7325 | || toc_ref == NULL | |
7326 | || !toc_ref[rel->r_offset / 8]) | |
7327 | continue; | |
7328 | if (ok_tprel) | |
7329 | { | |
7330 | /* IE -> LE */ | |
7331 | tls_set = TLS_EXPLICIT; | |
7332 | tls_clear = TLS_TPREL; | |
7333 | break; | |
7334 | } | |
7335 | continue; | |
7336 | ||
7337 | case R_PPC64_DTPMOD64: | |
7338 | if (pass == 0 | |
7339 | || sec != toc | |
7340 | || toc_ref == NULL | |
7341 | || !toc_ref[rel->r_offset / 8]) | |
7342 | continue; | |
7343 | if (rel + 1 < relend | |
7344 | && (rel[1].r_info | |
7345 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7346 | && rel[1].r_offset == rel->r_offset + 8) | |
7347 | { | |
7348 | if (ok_tprel) | |
7349 | /* GD -> LE */ | |
7350 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7351 | else | |
7352 | /* GD -> IE */ | |
7353 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7354 | tls_clear = TLS_GD; | |
7355 | } | |
7356 | else | |
7357 | { | |
7358 | if (!is_local) | |
7359 | continue; | |
7360 | ||
7361 | /* LD -> LE */ | |
7362 | tls_set = TLS_EXPLICIT; | |
7363 | tls_clear = TLS_LD; | |
7364 | } | |
7365 | break; | |
7366 | ||
7367 | default: | |
7368 | continue; | |
7369 | } | |
7370 | ||
7371 | if (pass == 0) | |
7372 | { | |
727fc41e AM |
7373 | if (!expecting_tls_get_addr |
7374 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7375 | continue; |
7376 | ||
3a71aa26 AM |
7377 | if (rel + 1 < relend |
7378 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7379 | htab->tls_get_addr, | |
7380 | htab->tls_get_addr_fd)) | |
102890f0 | 7381 | { |
3a71aa26 | 7382 | if (expecting_tls_get_addr == 2) |
102890f0 | 7383 | { |
3a71aa26 AM |
7384 | /* Check for toc tls entries. */ |
7385 | char *toc_tls; | |
7386 | int retval; | |
7387 | ||
7388 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7389 | &locsyms, | |
7390 | rel, ibfd); | |
7391 | if (retval == 0) | |
7392 | goto err_free_rel; | |
7393 | if (retval > 1 && toc_tls != NULL) | |
7394 | toc_ref[toc_ref_index] = 1; | |
102890f0 | 7395 | } |
3a71aa26 | 7396 | continue; |
102890f0 AM |
7397 | } |
7398 | ||
7399 | if (expecting_tls_get_addr != 1) | |
7400 | continue; | |
7401 | ||
7402 | /* Uh oh, we didn't find the expected call. We | |
7403 | could just mark this symbol to exclude it | |
7404 | from tls optimization but it's safer to skip | |
7405 | the entire section. */ | |
7406 | sec->has_tls_reloc = 0; | |
7407 | break; | |
7408 | } | |
7409 | ||
85f7a9cb | 7410 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7411 | { |
7412 | struct plt_entry *ent; | |
7413 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7414 | ent != NULL; | |
7415 | ent = ent->next) | |
7416 | if (ent->addend == 0) | |
411e1bfb | 7417 | { |
102890f0 | 7418 | if (ent->plt.refcount > 0) |
30038c59 | 7419 | { |
102890f0 AM |
7420 | ent->plt.refcount -= 1; |
7421 | expecting_tls_get_addr = 0; | |
30038c59 | 7422 | } |
102890f0 | 7423 | break; |
411e1bfb | 7424 | } |
102890f0 | 7425 | } |
411e1bfb | 7426 | |
85f7a9cb | 7427 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7428 | { |
7429 | struct plt_entry *ent; | |
7430 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7431 | ent != NULL; | |
7432 | ent = ent->next) | |
7433 | if (ent->addend == 0) | |
411e1bfb | 7434 | { |
102890f0 AM |
7435 | if (ent->plt.refcount > 0) |
7436 | ent->plt.refcount -= 1; | |
7437 | break; | |
411e1bfb | 7438 | } |
102890f0 | 7439 | } |
411e1bfb | 7440 | |
102890f0 | 7441 | if (tls_clear == 0) |
30038c59 AM |
7442 | continue; |
7443 | ||
102890f0 AM |
7444 | if ((tls_set & TLS_EXPLICIT) == 0) |
7445 | { | |
7446 | struct got_entry *ent; | |
411e1bfb | 7447 | |
102890f0 AM |
7448 | /* Adjust got entry for this reloc. */ |
7449 | if (h != NULL) | |
7450 | ent = h->got.glist; | |
7451 | else | |
7452 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7453 | |
102890f0 AM |
7454 | for (; ent != NULL; ent = ent->next) |
7455 | if (ent->addend == rel->r_addend | |
7456 | && ent->owner == ibfd | |
7457 | && ent->tls_type == tls_type) | |
7458 | break; | |
7459 | if (ent == NULL) | |
7460 | abort (); | |
411e1bfb | 7461 | |
102890f0 AM |
7462 | if (tls_set == 0) |
7463 | { | |
7464 | /* We managed to get rid of a got entry. */ | |
7465 | if (ent->got.refcount > 0) | |
7466 | ent->got.refcount -= 1; | |
7467 | } | |
7468 | } | |
7469 | else | |
7470 | { | |
7471 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7472 | we'll lose one or two dyn relocs. */ | |
7473 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7474 | NULL, h, sym_sec)) | |
7475 | return FALSE; | |
411e1bfb | 7476 | |
102890f0 AM |
7477 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7478 | { | |
7479 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7480 | NULL, h, sym_sec)) | |
7481 | return FALSE; | |
7482 | } | |
7483 | } | |
411e1bfb | 7484 | |
102890f0 AM |
7485 | *tls_mask |= tls_set; |
7486 | *tls_mask &= ~tls_clear; | |
7487 | } | |
8c1d1bb8 | 7488 | |
102890f0 AM |
7489 | if (elf_section_data (sec)->relocs != relstart) |
7490 | free (relstart); | |
7491 | } | |
411e1bfb | 7492 | |
727fc41e AM |
7493 | if (toc_ref != NULL) |
7494 | free (toc_ref); | |
411e1bfb | 7495 | |
727fc41e AM |
7496 | if (locsyms != NULL |
7497 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7498 | { | |
7499 | if (!info->keep_memory) | |
7500 | free (locsyms); | |
7501 | else | |
7502 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7503 | } | |
7504 | } | |
b34976b6 | 7505 | return TRUE; |
1e2f5b6e | 7506 | } |
b34976b6 | 7507 | |
c5614fa4 AM |
7508 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7509 | the values of any global symbols in a toc section that has been | |
7510 | edited. Globals in toc sections should be a rarity, so this function | |
7511 | sets a flag if any are found in toc sections other than the one just | |
7512 | edited, so that futher hash table traversals can be avoided. */ | |
7513 | ||
7514 | struct adjust_toc_info | |
7515 | { | |
7516 | asection *toc; | |
7517 | unsigned long *skip; | |
7518 | bfd_boolean global_toc_syms; | |
7519 | }; | |
7520 | ||
7521 | static bfd_boolean | |
7522 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7523 | { | |
7524 | struct ppc_link_hash_entry *eh; | |
7525 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7526 | ||
7527 | if (h->root.type == bfd_link_hash_indirect) | |
7528 | return TRUE; | |
7529 | ||
7530 | if (h->root.type == bfd_link_hash_warning) | |
7531 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7532 | ||
7533 | if (h->root.type != bfd_link_hash_defined | |
7534 | && h->root.type != bfd_link_hash_defweak) | |
7535 | return TRUE; | |
7536 | ||
7537 | eh = (struct ppc_link_hash_entry *) h; | |
7538 | if (eh->adjust_done) | |
7539 | return TRUE; | |
7540 | ||
7541 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7542 | { | |
7543 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7544 | if (skip != (unsigned long) -1) | |
7545 | eh->elf.root.u.def.value -= skip; | |
7546 | else | |
7547 | { | |
7548 | (*_bfd_error_handler) | |
7549 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7550 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7551 | eh->elf.root.u.def.value = 0; | |
7552 | } | |
7553 | eh->adjust_done = 1; | |
7554 | } | |
7555 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7556 | toc_inf->global_toc_syms = TRUE; | |
7557 | ||
7558 | return TRUE; | |
7559 | } | |
7560 | ||
7561 | /* Examine all relocs referencing .toc sections in order to remove | |
7562 | unused .toc entries. */ | |
7563 | ||
7564 | bfd_boolean | |
7565 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7566 | { | |
7567 | bfd *ibfd; | |
7568 | struct adjust_toc_info toc_inf; | |
7569 | ||
7570 | toc_inf.global_toc_syms = TRUE; | |
7571 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7572 | { | |
7573 | asection *toc, *sec; | |
7574 | Elf_Internal_Shdr *symtab_hdr; | |
7575 | Elf_Internal_Sym *local_syms; | |
7576 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7577 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7578 | unsigned long *skip, *drop; |
7579 | unsigned char *used; | |
7580 | unsigned char *keep, last, some_unused; | |
7581 | ||
7582 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7583 | if (toc == NULL | |
92b7a70f | 7584 | || toc->size == 0 |
c5614fa4 AM |
7585 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7586 | || elf_discarded_section (toc)) | |
7587 | continue; | |
7588 | ||
7589 | local_syms = NULL; | |
0ffa91dd | 7590 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7591 | sym_hashes = elf_sym_hashes (ibfd); |
7592 | ||
7593 | /* Look at sections dropped from the final link. */ | |
7594 | skip = NULL; | |
7595 | relstart = NULL; | |
7596 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7597 | { | |
7598 | if (sec->reloc_count == 0 | |
7599 | || !elf_discarded_section (sec) | |
7600 | || get_opd_info (sec) | |
7601 | || (sec->flags & SEC_ALLOC) == 0 | |
7602 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7603 | continue; | |
7604 | ||
7605 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7606 | if (relstart == NULL) | |
7607 | goto error_ret; | |
7608 | ||
7609 | /* Run through the relocs to see which toc entries might be | |
7610 | unused. */ | |
7611 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7612 | { | |
7613 | enum elf_ppc64_reloc_type r_type; | |
7614 | unsigned long r_symndx; | |
7615 | asection *sym_sec; | |
7616 | struct elf_link_hash_entry *h; | |
7617 | Elf_Internal_Sym *sym; | |
7618 | bfd_vma val; | |
7619 | ||
7620 | r_type = ELF64_R_TYPE (rel->r_info); | |
7621 | switch (r_type) | |
7622 | { | |
7623 | default: | |
7624 | continue; | |
7625 | ||
7626 | case R_PPC64_TOC16: | |
7627 | case R_PPC64_TOC16_LO: | |
7628 | case R_PPC64_TOC16_HI: | |
7629 | case R_PPC64_TOC16_HA: | |
7630 | case R_PPC64_TOC16_DS: | |
7631 | case R_PPC64_TOC16_LO_DS: | |
7632 | break; | |
7633 | } | |
7634 | ||
7635 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7636 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7637 | r_symndx, ibfd)) | |
7638 | goto error_ret; | |
7639 | ||
7640 | if (sym_sec != toc) | |
7641 | continue; | |
7642 | ||
7643 | if (h != NULL) | |
7644 | val = h->root.u.def.value; | |
7645 | else | |
7646 | val = sym->st_value; | |
7647 | val += rel->r_addend; | |
7648 | ||
7649 | if (val >= toc->size) | |
7650 | continue; | |
7651 | ||
7652 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7653 | If not, don't mark as unused. */ | |
7654 | if (val & 7) | |
7655 | continue; | |
7656 | ||
7657 | if (skip == NULL) | |
7658 | { | |
7659 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7660 | if (skip == NULL) | |
7661 | goto error_ret; | |
7662 | } | |
7663 | ||
7664 | skip[val >> 3] = 1; | |
7665 | } | |
7666 | ||
7667 | if (elf_section_data (sec)->relocs != relstart) | |
7668 | free (relstart); | |
7669 | } | |
7670 | ||
7671 | if (skip == NULL) | |
7672 | continue; | |
7673 | ||
7674 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7675 | if (used == NULL) | |
7676 | { | |
7677 | error_ret: | |
7678 | if (local_syms != NULL | |
7679 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7680 | free (local_syms); | |
7681 | if (sec != NULL | |
7682 | && relstart != NULL | |
7683 | && elf_section_data (sec)->relocs != relstart) | |
7684 | free (relstart); | |
7685 | if (skip != NULL) | |
7686 | free (skip); | |
7687 | return FALSE; | |
7688 | } | |
7689 | ||
30038c59 AM |
7690 | /* Now check all kept sections that might reference the toc. |
7691 | Check the toc itself last. */ | |
7692 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7693 | : ibfd->sections); | |
c5614fa4 | 7694 | sec != NULL; |
c5614fa4 | 7695 | sec = (sec == toc ? NULL |
c5614fa4 | 7696 | : sec->next == NULL ? toc |
30038c59 | 7697 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7698 | : sec->next)) |
7699 | { | |
7700 | int repeat; | |
7701 | ||
7702 | if (sec->reloc_count == 0 | |
7703 | || elf_discarded_section (sec) | |
7704 | || get_opd_info (sec) | |
7705 | || (sec->flags & SEC_ALLOC) == 0 | |
7706 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7707 | continue; | |
7708 | ||
7709 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7710 | if (relstart == NULL) | |
7711 | goto error_ret; | |
7712 | ||
7713 | /* Mark toc entries referenced as used. */ | |
7714 | repeat = 0; | |
7715 | do | |
7716 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7717 | { | |
7718 | enum elf_ppc64_reloc_type r_type; | |
7719 | unsigned long r_symndx; | |
7720 | asection *sym_sec; | |
7721 | struct elf_link_hash_entry *h; | |
7722 | Elf_Internal_Sym *sym; | |
7723 | bfd_vma val; | |
7724 | ||
7725 | r_type = ELF64_R_TYPE (rel->r_info); | |
7726 | switch (r_type) | |
7727 | { | |
7728 | case R_PPC64_TOC16: | |
7729 | case R_PPC64_TOC16_LO: | |
7730 | case R_PPC64_TOC16_HI: | |
7731 | case R_PPC64_TOC16_HA: | |
7732 | case R_PPC64_TOC16_DS: | |
7733 | case R_PPC64_TOC16_LO_DS: | |
7734 | /* In case we're taking addresses of toc entries. */ | |
7735 | case R_PPC64_ADDR64: | |
7736 | break; | |
7737 | ||
7738 | default: | |
7739 | continue; | |
7740 | } | |
7741 | ||
7742 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7743 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7744 | r_symndx, ibfd)) | |
7745 | { | |
7746 | free (used); | |
7747 | goto error_ret; | |
7748 | } | |
7749 | ||
7750 | if (sym_sec != toc) | |
7751 | continue; | |
7752 | ||
7753 | if (h != NULL) | |
7754 | val = h->root.u.def.value; | |
7755 | else | |
7756 | val = sym->st_value; | |
7757 | val += rel->r_addend; | |
7758 | ||
7759 | if (val >= toc->size) | |
7760 | continue; | |
7761 | ||
7762 | /* For the toc section, we only mark as used if | |
7763 | this entry itself isn't unused. */ | |
7764 | if (sec == toc | |
7765 | && !used[val >> 3] | |
7766 | && (used[rel->r_offset >> 3] | |
7767 | || !skip[rel->r_offset >> 3])) | |
7768 | /* Do all the relocs again, to catch reference | |
7769 | chains. */ | |
7770 | repeat = 1; | |
7771 | ||
7772 | used[val >> 3] = 1; | |
7773 | } | |
7774 | while (repeat); | |
7775 | } | |
7776 | ||
7777 | /* Merge the used and skip arrays. Assume that TOC | |
7778 | doublewords not appearing as either used or unused belong | |
7779 | to to an entry more than one doubleword in size. */ | |
7780 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7781 | drop < skip + (toc->size + 7) / 8; | |
7782 | ++drop, ++keep) | |
7783 | { | |
7784 | if (*keep) | |
7785 | { | |
7786 | *drop = 0; | |
7787 | last = 0; | |
7788 | } | |
7789 | else if (*drop) | |
7790 | { | |
7791 | some_unused = 1; | |
7792 | last = 1; | |
7793 | } | |
7794 | else | |
7795 | *drop = last; | |
7796 | } | |
7797 | ||
7798 | free (used); | |
7799 | ||
7800 | if (some_unused) | |
7801 | { | |
7802 | bfd_byte *contents, *src; | |
7803 | unsigned long off; | |
7804 | ||
7805 | /* Shuffle the toc contents, and at the same time convert the | |
7806 | skip array from booleans into offsets. */ | |
7807 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7808 | goto error_ret; | |
7809 | ||
7810 | elf_section_data (toc)->this_hdr.contents = contents; | |
7811 | ||
7812 | for (src = contents, off = 0, drop = skip; | |
7813 | src < contents + toc->size; | |
7814 | src += 8, ++drop) | |
7815 | { | |
7816 | if (*drop) | |
7817 | { | |
7818 | *drop = (unsigned long) -1; | |
7819 | off += 8; | |
7820 | } | |
7821 | else if (off != 0) | |
7822 | { | |
7823 | *drop = off; | |
7824 | memcpy (src - off, src, 8); | |
7825 | } | |
7826 | } | |
7827 | toc->rawsize = toc->size; | |
7828 | toc->size = src - contents - off; | |
7829 | ||
92b7a70f AM |
7830 | if (toc->reloc_count != 0) |
7831 | { | |
7832 | Elf_Internal_Rela *wrel; | |
7833 | bfd_size_type sz; | |
c5614fa4 | 7834 | |
92b7a70f AM |
7835 | /* Read toc relocs. */ |
7836 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7837 | TRUE); | |
7838 | if (relstart == NULL) | |
7839 | goto error_ret; | |
7840 | ||
7841 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7842 | wrel = relstart; | |
7843 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7844 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7845 | { | |
7846 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7847 | wrel->r_info = rel->r_info; | |
7848 | wrel->r_addend = rel->r_addend; | |
7849 | ++wrel; | |
7850 | } | |
8c1d1bb8 AM |
7851 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7852 | &local_syms, NULL, NULL)) | |
7853 | goto error_ret; | |
35090471 | 7854 | |
92b7a70f AM |
7855 | toc->reloc_count = wrel - relstart; |
7856 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7857 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7858 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7859 | } | |
c5614fa4 AM |
7860 | |
7861 | /* Adjust addends for relocs against the toc section sym. */ | |
7862 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7863 | { | |
7864 | if (sec->reloc_count == 0 | |
7865 | || elf_discarded_section (sec)) | |
7866 | continue; | |
7867 | ||
7868 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7869 | TRUE); | |
7870 | if (relstart == NULL) | |
7871 | goto error_ret; | |
7872 | ||
7873 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7874 | { | |
7875 | enum elf_ppc64_reloc_type r_type; | |
7876 | unsigned long r_symndx; | |
7877 | asection *sym_sec; | |
7878 | struct elf_link_hash_entry *h; | |
7879 | Elf_Internal_Sym *sym; | |
7880 | ||
7881 | r_type = ELF64_R_TYPE (rel->r_info); | |
7882 | switch (r_type) | |
7883 | { | |
7884 | default: | |
7885 | continue; | |
7886 | ||
7887 | case R_PPC64_TOC16: | |
7888 | case R_PPC64_TOC16_LO: | |
7889 | case R_PPC64_TOC16_HI: | |
7890 | case R_PPC64_TOC16_HA: | |
7891 | case R_PPC64_TOC16_DS: | |
7892 | case R_PPC64_TOC16_LO_DS: | |
7893 | case R_PPC64_ADDR64: | |
7894 | break; | |
7895 | } | |
7896 | ||
7897 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7898 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7899 | r_symndx, ibfd)) | |
7900 | goto error_ret; | |
7901 | ||
7902 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7903 | continue; | |
7904 | ||
7905 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7906 | } | |
7907 | } | |
7908 | ||
7909 | /* We shouldn't have local or global symbols defined in the TOC, | |
7910 | but handle them anyway. */ | |
7911 | if (local_syms != NULL) | |
7912 | { | |
7913 | Elf_Internal_Sym *sym; | |
7914 | ||
7915 | for (sym = local_syms; | |
7916 | sym < local_syms + symtab_hdr->sh_info; | |
7917 | ++sym) | |
cb33740c | 7918 | if (sym->st_value != 0 |
c5614fa4 AM |
7919 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) |
7920 | { | |
7921 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7922 | sym->st_value -= skip[sym->st_value >> 3]; | |
7923 | else | |
7924 | { | |
7925 | (*_bfd_error_handler) | |
7926 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7927 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7928 | NULL)); | |
c5614fa4 AM |
7929 | sym->st_value = 0; |
7930 | sym->st_shndx = SHN_ABS; | |
7931 | } | |
7932 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7933 | } | |
7934 | } | |
7935 | ||
7936 | /* Finally, adjust any global syms defined in the toc. */ | |
7937 | if (toc_inf.global_toc_syms) | |
7938 | { | |
7939 | toc_inf.toc = toc; | |
7940 | toc_inf.skip = skip; | |
7941 | toc_inf.global_toc_syms = FALSE; | |
7942 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7943 | &toc_inf); | |
7944 | } | |
7945 | } | |
7946 | ||
7947 | if (local_syms != NULL | |
7948 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7949 | { | |
7950 | if (!info->keep_memory) | |
7951 | free (local_syms); | |
7952 | else | |
7953 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7954 | } | |
7955 | free (skip); | |
7956 | } | |
7957 | ||
7958 | return TRUE; | |
7959 | } | |
7960 | ||
65f38f15 AM |
7961 | /* Allocate space in .plt, .got and associated reloc sections for |
7962 | dynamic relocs. */ | |
5bd4f169 | 7963 | |
b34976b6 | 7964 | static bfd_boolean |
4ce794b7 | 7965 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7966 | { |
65f38f15 AM |
7967 | struct bfd_link_info *info; |
7968 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7969 | asection *s; |
65f38f15 AM |
7970 | struct ppc_link_hash_entry *eh; |
7971 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7972 | struct got_entry *gent; |
5bd4f169 | 7973 | |
e92d460e | 7974 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7975 | return TRUE; |
5bd4f169 | 7976 | |
e92d460e AM |
7977 | if (h->root.type == bfd_link_hash_warning) |
7978 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7979 | ||
65f38f15 AM |
7980 | info = (struct bfd_link_info *) inf; |
7981 | htab = ppc_hash_table (info); | |
5bd4f169 | 7982 | |
e054468f AM |
7983 | if ((htab->elf.dynamic_sections_created |
7984 | && h->dynindx != -1 | |
7985 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
7986 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 7987 | { |
411e1bfb AM |
7988 | struct plt_entry *pent; |
7989 | bfd_boolean doneone = FALSE; | |
7990 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7991 | if (pent->plt.refcount > 0) | |
7992 | { | |
e054468f AM |
7993 | if (!htab->elf.dynamic_sections_created) |
7994 | { | |
7995 | s = htab->iplt; | |
7996 | pent->plt.offset = s->size; | |
7997 | s->size += PLT_ENTRY_SIZE; | |
7998 | s = htab->reliplt; | |
7999 | } | |
8000 | else | |
8001 | { | |
8002 | /* If this is the first .plt entry, make room for the special | |
8003 | first entry. */ | |
8004 | s = htab->plt; | |
8005 | if (s->size == 0) | |
8006 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
8007 | ||
8008 | pent->plt.offset = s->size; | |
8009 | ||
8010 | /* Make room for this entry. */ | |
8011 | s->size += PLT_ENTRY_SIZE; | |
8012 | ||
8013 | /* Make room for the .glink code. */ | |
8014 | s = htab->glink; | |
8015 | if (s->size == 0) | |
8016 | s->size += GLINK_CALL_STUB_SIZE; | |
8017 | /* We need bigger stubs past index 32767. */ | |
8018 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
8019 | s->size += 4; | |
8020 | s->size += 2*4; | |
8021 | ||
8022 | /* We also need to make an entry in the .rela.plt section. */ | |
8023 | s = htab->relplt; | |
8024 | } | |
eea6121a | 8025 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8026 | doneone = TRUE; |
8027 | } | |
8028 | else | |
8029 | pent->plt.offset = (bfd_vma) -1; | |
8030 | if (!doneone) | |
65f38f15 | 8031 | { |
411e1bfb | 8032 | h->plt.plist = NULL; |
f5385ebf | 8033 | h->needs_plt = 0; |
65f38f15 AM |
8034 | } |
8035 | } | |
8036 | else | |
8037 | { | |
411e1bfb | 8038 | h->plt.plist = NULL; |
f5385ebf | 8039 | h->needs_plt = 0; |
65f38f15 AM |
8040 | } |
8041 | ||
951fd09b AM |
8042 | eh = (struct ppc_link_hash_entry *) h; |
8043 | /* Run through the TLS GD got entries first if we're changing them | |
8044 | to TPREL. */ | |
e7b938ca | 8045 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
8046 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8047 | if (gent->got.refcount > 0 | |
8048 | && (gent->tls_type & TLS_GD) != 0) | |
8049 | { | |
8050 | /* This was a GD entry that has been converted to TPREL. If | |
8051 | there happens to be a TPREL entry we can use that one. */ | |
8052 | struct got_entry *ent; | |
8053 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
8054 | if (ent->got.refcount > 0 | |
8055 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
8056 | && ent->addend == gent->addend |
8057 | && ent->owner == gent->owner) | |
951fd09b AM |
8058 | { |
8059 | gent->got.refcount = 0; | |
8060 | break; | |
8061 | } | |
8062 | ||
8063 | /* If not, then we'll be using our own TPREL entry. */ | |
8064 | if (gent->got.refcount != 0) | |
8065 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
8066 | } | |
8067 | ||
411e1bfb AM |
8068 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8069 | if (gent->got.refcount > 0) | |
8070 | { | |
951fd09b AM |
8071 | bfd_boolean dyn; |
8072 | ||
411e1bfb | 8073 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
8074 | Undefined weak syms won't yet be marked as dynamic, |
8075 | nor will all TLS symbols. */ | |
411e1bfb | 8076 | if (h->dynindx == -1 |
b099ab9f AM |
8077 | && !h->forced_local |
8078 | && htab->elf.dynamic_sections_created) | |
411e1bfb | 8079 | { |
c152c796 | 8080 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
8081 | return FALSE; |
8082 | } | |
65f38f15 | 8083 | |
d881513a | 8084 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 8085 | && !h->def_dynamic) |
411e1bfb | 8086 | { |
102890f0 AM |
8087 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
8088 | gent->got.offset = (bfd_vma) -1; | |
951fd09b | 8089 | continue; |
411e1bfb | 8090 | } |
951fd09b | 8091 | |
0c8d6e5c | 8092 | if (!is_ppc64_elf (gent->owner)) |
0ffa91dd NC |
8093 | continue; |
8094 | ||
e717da7e | 8095 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
8096 | gent->got.offset = s->size; |
8097 | s->size | |
d881513a | 8098 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 8099 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
8100 | if ((info->shared |
8101 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
8102 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8103 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 8104 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 8105 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
8106 | ? 2 * sizeof (Elf64_External_Rela) |
8107 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
8108 | } |
8109 | else | |
8110 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 8111 | |
b099ab9f AM |
8112 | if (eh->dyn_relocs == NULL |
8113 | || !htab->elf.dynamic_sections_created) | |
b34976b6 | 8114 | return TRUE; |
65f38f15 AM |
8115 | |
8116 | /* In the shared -Bsymbolic case, discard space allocated for | |
8117 | dynamic pc-relative relocs against symbols which turn out to be | |
8118 | defined in regular objects. For the normal shared case, discard | |
8119 | space for relocs that have become local due to symbol visibility | |
8120 | changes. */ | |
8121 | ||
8122 | if (info->shared) | |
8123 | { | |
9c7a29a3 | 8124 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 8125 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
8126 | generated via assembly. We want calls to protected symbols to |
8127 | resolve directly to the function rather than going via the plt. | |
8128 | If people want function pointer comparisons to work as expected | |
8129 | then they should avoid writing weird assembly. */ | |
09695f56 | 8130 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
8131 | { |
8132 | struct ppc_dyn_relocs **pp; | |
8133 | ||
8134 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 8135 | { |
65f38f15 AM |
8136 | p->count -= p->pc_count; |
8137 | p->pc_count = 0; | |
8138 | if (p->count == 0) | |
8139 | *pp = p->next; | |
8140 | else | |
8141 | pp = &p->next; | |
5bd4f169 | 8142 | } |
65f38f15 | 8143 | } |
4e795f50 AM |
8144 | |
8145 | /* Also discard relocs on undefined weak syms with non-default | |
8146 | visibility. */ | |
cab87ef9 AM |
8147 | if (eh->dyn_relocs != NULL |
8148 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
8149 | { |
8150 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8151 | eh->dyn_relocs = NULL; | |
8152 | ||
8153 | /* Make sure this symbol is output as a dynamic symbol. | |
8154 | Undefined weak syms won't yet be marked as dynamic. */ | |
8155 | else if (h->dynindx == -1 | |
8156 | && !h->forced_local) | |
8157 | { | |
8158 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8159 | return FALSE; | |
8160 | } | |
8161 | } | |
65f38f15 | 8162 | } |
f4656909 | 8163 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
8164 | { |
8165 | /* For the non-shared case, discard space for relocs against | |
8166 | symbols which turn out to need copy relocs or are not | |
8167 | dynamic. */ | |
8168 | ||
f5385ebf | 8169 | if (!h->non_got_ref |
f5385ebf | 8170 | && !h->def_regular) |
65f38f15 AM |
8171 | { |
8172 | /* Make sure this symbol is output as a dynamic symbol. | |
8173 | Undefined weak syms won't yet be marked as dynamic. */ | |
8174 | if (h->dynindx == -1 | |
f5385ebf | 8175 | && !h->forced_local) |
65f38f15 | 8176 | { |
c152c796 | 8177 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 8178 | return FALSE; |
65f38f15 AM |
8179 | } |
8180 | ||
8181 | /* If that succeeded, we know we'll be keeping all the | |
8182 | relocs. */ | |
8183 | if (h->dynindx != -1) | |
8184 | goto keep; | |
8185 | } | |
8186 | ||
8187 | eh->dyn_relocs = NULL; | |
8188 | ||
ec338859 | 8189 | keep: ; |
65f38f15 AM |
8190 | } |
8191 | ||
8192 | /* Finally, allocate space. */ | |
8193 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8194 | { | |
8195 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 8196 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
8197 | } |
8198 | ||
b34976b6 | 8199 | return TRUE; |
65f38f15 AM |
8200 | } |
8201 | ||
8202 | /* Find any dynamic relocs that apply to read-only sections. */ | |
8203 | ||
b34976b6 | 8204 | static bfd_boolean |
4ce794b7 | 8205 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
8206 | { |
8207 | struct ppc_link_hash_entry *eh; | |
8208 | struct ppc_dyn_relocs *p; | |
8209 | ||
e92d460e AM |
8210 | if (h->root.type == bfd_link_hash_warning) |
8211 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8212 | ||
65f38f15 AM |
8213 | eh = (struct ppc_link_hash_entry *) h; |
8214 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8215 | { | |
8216 | asection *s = p->sec->output_section; | |
8217 | ||
8218 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8219 | { | |
4ce794b7 | 8220 | struct bfd_link_info *info = inf; |
65f38f15 AM |
8221 | |
8222 | info->flags |= DF_TEXTREL; | |
8223 | ||
8224 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 8225 | return FALSE; |
65f38f15 AM |
8226 | } |
8227 | } | |
b34976b6 | 8228 | return TRUE; |
65f38f15 AM |
8229 | } |
8230 | ||
8231 | /* Set the sizes of the dynamic sections. */ | |
8232 | ||
b34976b6 | 8233 | static bfd_boolean |
4ce794b7 AM |
8234 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
8235 | struct bfd_link_info *info) | |
65f38f15 AM |
8236 | { |
8237 | struct ppc_link_hash_table *htab; | |
8238 | bfd *dynobj; | |
8239 | asection *s; | |
b34976b6 | 8240 | bfd_boolean relocs; |
65f38f15 AM |
8241 | bfd *ibfd; |
8242 | ||
8243 | htab = ppc_hash_table (info); | |
8244 | dynobj = htab->elf.dynobj; | |
8245 | if (dynobj == NULL) | |
8246 | abort (); | |
8247 | ||
8248 | if (htab->elf.dynamic_sections_created) | |
8249 | { | |
8250 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 8251 | if (info->executable) |
65f38f15 AM |
8252 | { |
8253 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8254 | if (s == NULL) | |
8255 | abort (); | |
eea6121a | 8256 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
8257 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
8258 | } | |
8259 | } | |
8260 | ||
8261 | /* Set up .got offsets for local syms, and space for local dynamic | |
8262 | relocs. */ | |
8263 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8264 | { | |
411e1bfb AM |
8265 | struct got_entry **lgot_ents; |
8266 | struct got_entry **end_lgot_ents; | |
e054468f AM |
8267 | struct plt_entry **local_plt; |
8268 | struct plt_entry **end_local_plt; | |
e7b938ca | 8269 | char *lgot_masks; |
65f38f15 AM |
8270 | bfd_size_type locsymcount; |
8271 | Elf_Internal_Shdr *symtab_hdr; | |
8272 | asection *srel; | |
8273 | ||
0c8d6e5c | 8274 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
8275 | continue; |
8276 | ||
8277 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8278 | { | |
ec338859 | 8279 | struct ppc_dyn_relocs *p; |
65f38f15 | 8280 | |
6edfbbad | 8281 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 8282 | { |
ec338859 AM |
8283 | if (!bfd_is_abs_section (p->sec) |
8284 | && bfd_is_abs_section (p->sec->output_section)) | |
8285 | { | |
8286 | /* Input section has been discarded, either because | |
8287 | it is a copy of a linkonce section or due to | |
8288 | linker script /DISCARD/, so we'll be discarding | |
8289 | the relocs too. */ | |
8290 | } | |
248866a8 | 8291 | else if (p->count != 0) |
ec338859 AM |
8292 | { |
8293 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 8294 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
8295 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
8296 | info->flags |= DF_TEXTREL; | |
ec338859 | 8297 | } |
65f38f15 AM |
8298 | } |
8299 | } | |
8300 | ||
411e1bfb AM |
8301 | lgot_ents = elf_local_got_ents (ibfd); |
8302 | if (!lgot_ents) | |
65f38f15 AM |
8303 | continue; |
8304 | ||
0ffa91dd | 8305 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 8306 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 8307 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
8308 | local_plt = (struct plt_entry **) end_lgot_ents; |
8309 | end_local_plt = local_plt + locsymcount; | |
8310 | lgot_masks = (char *) end_local_plt; | |
e717da7e AM |
8311 | s = ppc64_elf_tdata (ibfd)->got; |
8312 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 8313 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 8314 | { |
411e1bfb AM |
8315 | struct got_entry *ent; |
8316 | ||
8317 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
8318 | if (ent->got.refcount > 0) | |
8319 | { | |
e7b938ca | 8320 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 8321 | { |
102890f0 AM |
8322 | ppc64_tlsld_got (ibfd)->refcount += 1; |
8323 | ent->got.offset = (bfd_vma) -1; | |
411e1bfb AM |
8324 | } |
8325 | else | |
8326 | { | |
eea6121a | 8327 | ent->got.offset = s->size; |
e7b938ca | 8328 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 8329 | { |
eea6121a | 8330 | s->size += 16; |
411e1bfb | 8331 | if (info->shared) |
eea6121a | 8332 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
8333 | } |
8334 | else | |
8335 | { | |
eea6121a | 8336 | s->size += 8; |
411e1bfb | 8337 | if (info->shared) |
eea6121a | 8338 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8339 | } |
8340 | } | |
8341 | } | |
8342 | else | |
8343 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 | 8344 | } |
e054468f AM |
8345 | |
8346 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
8347 | for (; local_plt < end_local_plt; ++local_plt) | |
8348 | { | |
8349 | struct plt_entry *ent; | |
8350 | ||
8351 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
8352 | if (ent->plt.refcount > 0) | |
8353 | { | |
8354 | asection *s = htab->iplt; | |
8355 | ||
8356 | ent->plt.offset = s->size; | |
8357 | s->size += PLT_ENTRY_SIZE; | |
8358 | ||
8359 | htab->reliplt += sizeof (Elf64_External_Rela); | |
8360 | } | |
8361 | else | |
8362 | ent->plt.offset = (bfd_vma) -1; | |
8363 | } | |
65f38f15 AM |
8364 | } |
8365 | ||
8366 | /* Allocate global sym .plt and .got entries, and space for global | |
8367 | sym dynamic relocs. */ | |
4ce794b7 | 8368 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8369 | |
102890f0 AM |
8370 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8371 | { | |
0c8d6e5c | 8372 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
8373 | continue; |
8374 | ||
8375 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
8376 | { | |
8377 | s = ppc64_elf_tdata (ibfd)->got; | |
8378 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
8379 | s->size += 16; | |
8380 | if (info->shared) | |
8381 | { | |
8382 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8383 | srel->size += sizeof (Elf64_External_Rela); | |
8384 | } | |
8385 | } | |
8386 | else | |
8387 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
8388 | } | |
8389 | ||
65f38f15 AM |
8390 | /* We now have determined the sizes of the various dynamic sections. |
8391 | Allocate memory for them. */ | |
b34976b6 | 8392 | relocs = FALSE; |
65f38f15 AM |
8393 | for (s = dynobj->sections; s != NULL; s = s->next) |
8394 | { | |
8395 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8396 | continue; | |
8397 | ||
4ce794b7 | 8398 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8399 | /* These haven't been allocated yet; don't strip. */ |
8400 | continue; | |
e717da7e AM |
8401 | else if (s == htab->got |
8402 | || s == htab->plt | |
e054468f | 8403 | || s == htab->iplt |
c456f082 AM |
8404 | || s == htab->glink |
8405 | || s == htab->dynbss) | |
65f38f15 AM |
8406 | { |
8407 | /* Strip this section if we don't need it; see the | |
8408 | comment below. */ | |
5bd4f169 | 8409 | } |
0112cd26 | 8410 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8411 | { |
c456f082 | 8412 | if (s->size != 0) |
5bd4f169 | 8413 | { |
4ce794b7 | 8414 | if (s != htab->relplt) |
b34976b6 | 8415 | relocs = TRUE; |
5bd4f169 AM |
8416 | |
8417 | /* We use the reloc_count field as a counter if we need | |
8418 | to copy relocs into the output file. */ | |
8419 | s->reloc_count = 0; | |
8420 | } | |
8421 | } | |
65f38f15 | 8422 | else |
5bd4f169 AM |
8423 | { |
8424 | /* It's not one of our sections, so don't allocate space. */ | |
8425 | continue; | |
8426 | } | |
8427 | ||
eea6121a | 8428 | if (s->size == 0) |
5bd4f169 | 8429 | { |
c456f082 AM |
8430 | /* If we don't need this section, strip it from the |
8431 | output file. This is mostly to handle .rela.bss and | |
8432 | .rela.plt. We must create both sections in | |
8433 | create_dynamic_sections, because they must be created | |
8434 | before the linker maps input sections to output | |
8435 | sections. The linker does that before | |
8436 | adjust_dynamic_symbol is called, and it is that | |
8437 | function which decides whether anything needs to go | |
8438 | into these sections. */ | |
8423293d | 8439 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8440 | continue; |
8441 | } | |
8442 | ||
c456f082 | 8443 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8444 | continue; |
8445 | ||
65f38f15 AM |
8446 | /* Allocate memory for the section contents. We use bfd_zalloc |
8447 | here in case unused entries are not reclaimed before the | |
8448 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8449 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8450 | sections instead of garbage. | |
8451 | We also rely on the section contents being zero when writing | |
8452 | the GOT. */ | |
eea6121a | 8453 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8454 | if (s->contents == NULL) |
b34976b6 | 8455 | return FALSE; |
5bd4f169 AM |
8456 | } |
8457 | ||
e717da7e AM |
8458 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8459 | { | |
0c8d6e5c | 8460 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
8461 | continue; |
8462 | ||
e717da7e AM |
8463 | s = ppc64_elf_tdata (ibfd)->got; |
8464 | if (s != NULL && s != htab->got) | |
8465 | { | |
eea6121a | 8466 | if (s->size == 0) |
8423293d | 8467 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8468 | else |
8469 | { | |
eea6121a | 8470 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8471 | if (s->contents == NULL) |
8472 | return FALSE; | |
8473 | } | |
8474 | } | |
8475 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8476 | if (s != NULL) | |
8477 | { | |
eea6121a | 8478 | if (s->size == 0) |
8423293d | 8479 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8480 | else |
8481 | { | |
eea6121a | 8482 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8483 | if (s->contents == NULL) |
8484 | return FALSE; | |
8485 | relocs = TRUE; | |
8486 | s->reloc_count = 0; | |
8487 | } | |
8488 | } | |
8489 | } | |
8490 | ||
e86ce104 | 8491 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8492 | { |
8493 | /* Add some entries to the .dynamic section. We fill in the | |
8494 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8495 | must add the entries now so that we get the correct size for | |
8496 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8497 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8498 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8499 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8500 | |
36af4a4e | 8501 | if (info->executable) |
5bd4f169 | 8502 | { |
dc810e39 | 8503 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8504 | return FALSE; |
5bd4f169 AM |
8505 | } |
8506 | ||
eea6121a | 8507 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8508 | { |
dc810e39 AM |
8509 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8510 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8511 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8512 | || !add_dynamic_entry (DT_JMPREL, 0) |
8513 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8514 | return FALSE; |
5bd4f169 AM |
8515 | } |
8516 | ||
19397422 AM |
8517 | if (NO_OPD_RELOCS) |
8518 | { | |
8519 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8520 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8521 | return FALSE; |
19397422 AM |
8522 | } |
8523 | ||
5bd4f169 AM |
8524 | if (relocs) |
8525 | { | |
dc810e39 AM |
8526 | if (!add_dynamic_entry (DT_RELA, 0) |
8527 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8528 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8529 | return FALSE; |
5bd4f169 | 8530 | |
65f38f15 AM |
8531 | /* If any dynamic relocs apply to a read-only section, |
8532 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8533 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8534 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8535 | |
65f38f15 | 8536 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8537 | { |
65f38f15 | 8538 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8539 | return FALSE; |
5bd4f169 | 8540 | } |
5bd4f169 | 8541 | } |
5bd4f169 | 8542 | } |
65f38f15 | 8543 | #undef add_dynamic_entry |
5bd4f169 | 8544 | |
b34976b6 | 8545 | return TRUE; |
5bd4f169 AM |
8546 | } |
8547 | ||
721956f4 | 8548 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8549 | |
4ce794b7 AM |
8550 | static inline enum ppc_stub_type |
8551 | ppc_type_of_stub (asection *input_sec, | |
8552 | const Elf_Internal_Rela *rel, | |
8553 | struct ppc_link_hash_entry **hash, | |
e054468f | 8554 | struct plt_entry **plt_ent, |
4ce794b7 | 8555 | bfd_vma destination) |
5bd4f169 | 8556 | { |
721956f4 AM |
8557 | struct ppc_link_hash_entry *h = *hash; |
8558 | bfd_vma location; | |
8559 | bfd_vma branch_offset; | |
8560 | bfd_vma max_branch_offset; | |
4ce794b7 | 8561 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8562 | |
721956f4 AM |
8563 | if (h != NULL) |
8564 | { | |
e054468f | 8565 | struct plt_entry *ent; |
7fe2b9a6 AM |
8566 | struct ppc_link_hash_entry *fdh = h; |
8567 | if (fdh->oh != NULL | |
8568 | && fdh->oh->is_func_descriptor) | |
8569 | fdh = fdh->oh; | |
8387904d | 8570 | |
e054468f AM |
8571 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
8572 | if (ent->addend == rel->r_addend | |
8573 | && ent->plt.offset != (bfd_vma) -1) | |
8574 | { | |
8575 | *hash = fdh; | |
8576 | *plt_ent = ent; | |
8577 | return ppc_stub_plt_call; | |
8578 | } | |
5bd4f169 | 8579 | |
7fe2b9a6 AM |
8580 | /* Here, we know we don't have a plt entry. If we don't have a |
8581 | either a defined function descriptor or a defined entry symbol | |
8582 | in a regular object file, then it is pointless trying to make | |
8583 | any other type of stub. */ | |
8584 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8585 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8586 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8587 | && !((h->elf.root.type == bfd_link_hash_defined | |
8588 | || h->elf.root.type == bfd_link_hash_defweak) | |
8589 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8590 | return ppc_stub_none; |
5d1634d7 | 8591 | } |
e054468f AM |
8592 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
8593 | { | |
8594 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
8595 | struct plt_entry **local_plt = (struct plt_entry **) | |
8596 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
8597 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
8598 | ||
8599 | if (local_plt[r_symndx] != NULL) | |
8600 | { | |
8601 | struct plt_entry *ent; | |
8602 | ||
8603 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
8604 | if (ent->addend == rel->r_addend | |
8605 | && ent->plt.offset != (bfd_vma) -1) | |
8606 | { | |
8607 | *plt_ent = ent; | |
8608 | return ppc_stub_plt_call; | |
8609 | } | |
8610 | } | |
8611 | } | |
5d1634d7 | 8612 | |
721956f4 AM |
8613 | /* Determine where the call point is. */ |
8614 | location = (input_sec->output_offset | |
8615 | + input_sec->output_section->vma | |
8616 | + rel->r_offset); | |
5d1634d7 | 8617 | |
721956f4 AM |
8618 | branch_offset = destination - location; |
8619 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8620 | |
721956f4 AM |
8621 | /* Determine if a long branch stub is needed. */ |
8622 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8623 | if (r_type != R_PPC64_REL24) |
721956f4 | 8624 | max_branch_offset = 1 << 15; |
5d1634d7 | 8625 | |
721956f4 AM |
8626 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8627 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8628 | is needed later. */ | |
8629 | return ppc_stub_long_branch; | |
5d1634d7 | 8630 | |
721956f4 | 8631 | return ppc_stub_none; |
5d1634d7 AM |
8632 | } |
8633 | ||
8634 | /* Build a .plt call stub. */ | |
8635 | ||
4ce794b7 | 8636 | static inline bfd_byte * |
176a0d42 | 8637 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
5d1634d7 AM |
8638 | { |
8639 | #define PPC_LO(v) ((v) & 0xffff) | |
8640 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8641 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8642 | ||
ac2df442 AM |
8643 | if (PPC_HA (offset) != 0) |
8644 | { | |
176a0d42 AM |
8645 | if (r != NULL) |
8646 | { | |
8647 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
8648 | r[1].r_offset = r[0].r_offset + 8; | |
8649 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8650 | r[1].r_addend = r[0].r_addend; | |
8651 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8652 | { | |
8653 | r[2].r_offset = r[1].r_offset + 4; | |
8654 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
8655 | r[2].r_addend = r[0].r_addend; | |
8656 | } | |
8657 | else | |
8658 | { | |
8659 | r[2].r_offset = r[1].r_offset + 8; | |
8660 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8661 | r[2].r_addend = r[0].r_addend + 8; | |
8662 | r[3].r_offset = r[2].r_offset + 4; | |
8663 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8664 | r[3].r_addend = r[0].r_addend + 16; | |
8665 | } | |
8666 | } | |
ac2df442 AM |
8667 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
8668 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8669 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8670 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8671 | { | |
8672 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
8673 | offset = 0; | |
8674 | } | |
8675 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8676 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
8677 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
8678 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8679 | } | |
8680 | else | |
8681 | { | |
176a0d42 AM |
8682 | if (r != NULL) |
8683 | { | |
8684 | r[0].r_offset += 4; | |
8685 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8686 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8687 | { | |
8688 | r[1].r_offset = r[0].r_offset + 4; | |
8689 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
8690 | r[1].r_addend = r[0].r_addend; | |
8691 | } | |
8692 | else | |
8693 | { | |
8694 | r[1].r_offset = r[0].r_offset + 8; | |
8695 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8696 | r[1].r_addend = r[0].r_addend + 16; | |
8697 | r[2].r_offset = r[1].r_offset + 4; | |
8698 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8699 | r[2].r_addend = r[0].r_addend + 8; | |
8700 | } | |
8701 | } | |
ac2df442 AM |
8702 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
8703 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
8704 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8705 | { | |
8706 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
8707 | offset = 0; | |
8708 | } | |
8709 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8710 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
8711 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
8712 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8713 | } | |
5d1634d7 AM |
8714 | return p; |
8715 | } | |
8716 | ||
176a0d42 AM |
8717 | static Elf_Internal_Rela * |
8718 | get_relocs (asection *sec, int count) | |
8719 | { | |
8720 | Elf_Internal_Rela *relocs; | |
8721 | struct bfd_elf_section_data *elfsec_data; | |
8722 | ||
8723 | elfsec_data = elf_section_data (sec); | |
8724 | relocs = elfsec_data->relocs; | |
8725 | if (relocs == NULL) | |
8726 | { | |
8727 | bfd_size_type relsize; | |
8728 | relsize = sec->reloc_count * sizeof (*relocs); | |
8729 | relocs = bfd_alloc (sec->owner, relsize); | |
8730 | if (relocs == NULL) | |
8731 | return NULL; | |
8732 | elfsec_data->relocs = relocs; | |
8733 | elfsec_data->rel_hdr.sh_size = (sec->reloc_count | |
8734 | * sizeof (Elf64_External_Rela)); | |
8735 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
8736 | sec->reloc_count = 0; | |
8737 | } | |
8738 | relocs += sec->reloc_count; | |
8739 | sec->reloc_count += count; | |
8740 | return relocs; | |
8741 | } | |
8742 | ||
b34976b6 | 8743 | static bfd_boolean |
4ce794b7 | 8744 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8745 | { |
721956f4 AM |
8746 | struct ppc_stub_hash_entry *stub_entry; |
8747 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8748 | struct bfd_link_info *info; |
8749 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8750 | bfd_byte *loc; |
8751 | bfd_byte *p; | |
ee75fd95 | 8752 | bfd_vma dest, off; |
721956f4 | 8753 | int size; |
176a0d42 | 8754 | Elf_Internal_Rela *r; |
e054468f | 8755 | asection *plt; |
5d1634d7 | 8756 | |
721956f4 AM |
8757 | /* Massage our args to the form they really have. */ |
8758 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8759 | info = in_arg; |
5d1634d7 | 8760 | |
5d1634d7 AM |
8761 | htab = ppc_hash_table (info); |
8762 | ||
721956f4 | 8763 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8764 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8765 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8766 | |
4ce794b7 | 8767 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8768 | switch (stub_entry->stub_type) |
5d1634d7 | 8769 | { |
721956f4 | 8770 | case ppc_stub_long_branch: |
ad8e1ba5 | 8771 | case ppc_stub_long_branch_r2off: |
721956f4 | 8772 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8773 | off = dest = (stub_entry->target_value |
8774 | + stub_entry->target_section->output_offset | |
8775 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8776 | |
721956f4 AM |
8777 | /* And this is where we are coming from. */ |
8778 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8779 | + stub_entry->stub_sec->output_offset |
8780 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8781 | |
ac2df442 AM |
8782 | size = 4; |
8783 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
8784 | { |
8785 | bfd_vma r2off; | |
8786 | ||
8787 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8788 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8789 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8790 | loc += 4; |
ac2df442 AM |
8791 | size = 12; |
8792 | if (PPC_HA (r2off) != 0) | |
8793 | { | |
8794 | size = 16; | |
8795 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8796 | loc += 4; | |
8797 | } | |
97b639ba | 8798 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 8799 | loc += 4; |
ac2df442 | 8800 | off -= size - 4; |
ad8e1ba5 | 8801 | } |
97b639ba | 8802 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8803 | |
5c3dead3 AM |
8804 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8805 | { | |
8806 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8807 | stub_entry->root.string); | |
8808 | htab->stub_error = TRUE; | |
8809 | return FALSE; | |
8810 | } | |
ee75fd95 AM |
8811 | |
8812 | if (info->emitrelocations) | |
8813 | { | |
176a0d42 AM |
8814 | r = get_relocs (stub_entry->stub_sec, 1); |
8815 | if (r == NULL) | |
8816 | return FALSE; | |
ee75fd95 AM |
8817 | r->r_offset = loc - stub_entry->stub_sec->contents; |
8818 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8819 | r->r_addend = dest; | |
8820 | if (stub_entry->h != NULL) | |
8821 | { | |
8822 | struct elf_link_hash_entry **hashes; | |
8823 | unsigned long symndx; | |
8824 | struct ppc_link_hash_entry *h; | |
8825 | ||
8826 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8827 | if (hashes == NULL) | |
8828 | { | |
8829 | bfd_size_type hsize; | |
8830 | ||
8831 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8832 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8833 | if (hashes == NULL) | |
8834 | return FALSE; | |
8835 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8836 | htab->stub_globals = 1; | |
8837 | } | |
8838 | symndx = htab->stub_globals++; | |
8839 | h = stub_entry->h; | |
8840 | hashes[symndx] = &h->elf; | |
8841 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8842 | if (h->oh != NULL && h->oh->is_func) | |
8843 | h = h->oh; | |
8844 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8845 | /* H is an opd symbol. The addend must be zero. */ | |
8846 | r->r_addend = 0; | |
8847 | else | |
8848 | { | |
8849 | off = (h->elf.root.u.def.value | |
8850 | + h->elf.root.u.def.section->output_offset | |
8851 | + h->elf.root.u.def.section->output_section->vma); | |
8852 | r->r_addend -= off; | |
8853 | } | |
8854 | } | |
8855 | } | |
721956f4 | 8856 | break; |
e86ce104 | 8857 | |
721956f4 | 8858 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8859 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8860 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8861 | stub_entry->root.string + 9, | |
b34976b6 | 8862 | FALSE, FALSE); |
721956f4 AM |
8863 | if (br_entry == NULL) |
8864 | { | |
8865 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8866 | stub_entry->root.string); |
b34976b6 AM |
8867 | htab->stub_error = TRUE; |
8868 | return FALSE; | |
721956f4 AM |
8869 | } |
8870 | ||
176a0d42 AM |
8871 | dest = (stub_entry->target_value |
8872 | + stub_entry->target_section->output_offset | |
8873 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 8874 | |
176a0d42 | 8875 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 8876 | htab->brlt->contents + br_entry->offset); |
721956f4 | 8877 | |
f94498ff | 8878 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 8879 | { |
f94498ff | 8880 | br_entry->iter = 0; |
84f5d08e | 8881 | |
f94498ff | 8882 | if (htab->relbrlt != NULL) |
84f5d08e | 8883 | { |
f94498ff AM |
8884 | /* Create a reloc for the branch lookup table entry. */ |
8885 | Elf_Internal_Rela rela; | |
8886 | bfd_byte *rl; | |
8887 | ||
8888 | rela.r_offset = (br_entry->offset | |
8889 | + htab->brlt->output_offset | |
8890 | + htab->brlt->output_section->vma); | |
8891 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 8892 | rela.r_addend = dest; |
f94498ff AM |
8893 | |
8894 | rl = htab->relbrlt->contents; | |
8895 | rl += (htab->relbrlt->reloc_count++ | |
8896 | * sizeof (Elf64_External_Rela)); | |
8897 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
8898 | } | |
8899 | else if (info->emitrelocations) | |
8900 | { | |
176a0d42 AM |
8901 | r = get_relocs (htab->brlt, 1); |
8902 | if (r == NULL) | |
8903 | return FALSE; | |
8904 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
8905 | normal reloc processing. Symbols and offsets are not | |
8906 | translated from input file to output file form, so | |
8907 | set up the offset per the output file. */ | |
f94498ff AM |
8908 | r->r_offset = (br_entry->offset |
8909 | + htab->brlt->output_offset | |
8910 | + htab->brlt->output_section->vma); | |
8911 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 8912 | r->r_addend = dest; |
84f5d08e | 8913 | } |
84f5d08e | 8914 | } |
721956f4 | 8915 | |
176a0d42 AM |
8916 | dest = (br_entry->offset |
8917 | + htab->brlt->output_offset | |
8918 | + htab->brlt->output_section->vma); | |
8919 | ||
8920 | off = (dest | |
4ce794b7 | 8921 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 8922 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8923 | |
ad8e1ba5 | 8924 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8925 | { |
8926 | (*_bfd_error_handler) | |
e86ce104 | 8927 | (_("linkage table error against `%s'"), |
721956f4 | 8928 | stub_entry->root.string); |
5d1634d7 | 8929 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8930 | htab->stub_error = TRUE; |
8931 | return FALSE; | |
5d1634d7 | 8932 | } |
41bd81ab | 8933 | |
176a0d42 AM |
8934 | if (info->emitrelocations) |
8935 | { | |
8936 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
8937 | if (r == NULL) | |
8938 | return FALSE; | |
8939 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
8940 | if (bfd_big_endian (info->output_bfd)) |
8941 | r[0].r_offset += 2; | |
176a0d42 AM |
8942 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
8943 | r[0].r_offset += 4; | |
8944 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8945 | r[0].r_addend = dest; | |
8946 | if (PPC_HA (off) != 0) | |
8947 | { | |
8948 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
8949 | r[1].r_offset = r[0].r_offset + 4; | |
8950 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8951 | r[1].r_addend = r[0].r_addend; | |
8952 | } | |
8953 | } | |
8954 | ||
ad8e1ba5 AM |
8955 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8956 | { | |
176a0d42 | 8957 | if (PPC_HA (off) != 0) |
ac2df442 AM |
8958 | { |
8959 | size = 16; | |
176a0d42 | 8960 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 8961 | loc += 4; |
176a0d42 | 8962 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
8963 | } |
8964 | else | |
8965 | { | |
8966 | size = 12; | |
176a0d42 | 8967 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 8968 | } |
ad8e1ba5 AM |
8969 | } |
8970 | else | |
8971 | { | |
8972 | bfd_vma r2off; | |
8973 | ||
8974 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8975 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8976 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8977 | loc += 4; |
ac2df442 | 8978 | size = 20; |
176a0d42 | 8979 | if (PPC_HA (off) != 0) |
ac2df442 AM |
8980 | { |
8981 | size += 4; | |
176a0d42 | 8982 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 8983 | loc += 4; |
176a0d42 | 8984 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
8985 | loc += 4; |
8986 | } | |
8987 | else | |
8988 | { | |
176a0d42 | 8989 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
8990 | loc += 4; |
8991 | } | |
8992 | ||
8993 | if (PPC_HA (r2off) != 0) | |
8994 | { | |
8995 | size += 4; | |
8996 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8997 | loc += 4; | |
8998 | } | |
97b639ba | 8999 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
9000 | } |
9001 | loc += 4; | |
97b639ba | 9002 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 9003 | loc += 4; |
97b639ba | 9004 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 9005 | break; |
5d1634d7 | 9006 | |
721956f4 | 9007 | case ppc_stub_plt_call: |
c862ae31 AM |
9008 | /* Do the best we can for shared libraries built without |
9009 | exporting ".foo" for each "foo". This can happen when symbol | |
9010 | versioning scripts strip all bar a subset of symbols. */ | |
e054468f AM |
9011 | if (stub_entry->h != NULL |
9012 | && stub_entry->h->oh != NULL | |
8387904d | 9013 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined |
34814b9f | 9014 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
9015 | { |
9016 | /* Point the symbol at the stub. There may be multiple stubs, | |
9017 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
9018 | defined somewhere. Maybe defining the symbol in the stub |
9019 | section is a silly idea. If we didn't do this, htab->top_id | |
9020 | could disappear. */ | |
34814b9f AM |
9021 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
9022 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
9023 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
9024 | } |
9025 | ||
721956f4 | 9026 | /* Now build the stub. */ |
e054468f | 9027 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 9028 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
9029 | abort (); |
9030 | ||
e054468f AM |
9031 | plt = htab->plt; |
9032 | if (!htab->elf.dynamic_sections_created) | |
9033 | plt = htab->iplt; | |
9034 | ||
9035 | dest += plt->output_offset + plt->output_section->vma; | |
9036 | ||
9037 | if (stub_entry->h == NULL | |
9038 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
9039 | { | |
9040 | Elf_Internal_Rela rela; | |
9041 | bfd_byte *rl; | |
9042 | ||
9043 | rela.r_offset = dest; | |
9044 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
9045 | rela.r_addend = (stub_entry->target_value | |
9046 | + stub_entry->target_section->output_offset | |
9047 | + stub_entry->target_section->output_section->vma); | |
9048 | ||
9049 | if (!htab->elf.dynamic_sections_created) | |
9050 | rl = (htab->reliplt->contents | |
9051 | + (stub_entry->plt_ent->plt.offset | |
9052 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
9053 | else | |
9054 | rl = (htab->relplt->contents | |
9055 | + ((stub_entry->plt_ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
9056 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
9057 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, rl); | |
9058 | stub_entry->plt_ent->plt.offset |= 1; | |
9059 | } | |
176a0d42 AM |
9060 | |
9061 | off = (dest | |
e054468f | 9062 | - elf_gp (plt->output_section->owner) |
176a0d42 | 9063 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9064 | |
ad8e1ba5 | 9065 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
9066 | { |
9067 | (*_bfd_error_handler) | |
9068 | (_("linkage table error against `%s'"), | |
e054468f AM |
9069 | stub_entry->h != NULL |
9070 | ? stub_entry->h->elf.root.root.string | |
9071 | : "<local sym>"); | |
721956f4 | 9072 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9073 | htab->stub_error = TRUE; |
9074 | return FALSE; | |
721956f4 AM |
9075 | } |
9076 | ||
176a0d42 AM |
9077 | r = NULL; |
9078 | if (info->emitrelocations) | |
9079 | { | |
9080 | r = get_relocs (stub_entry->stub_sec, | |
9081 | (2 + (PPC_HA (off) != 0) | |
9082 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
9083 | if (r == NULL) | |
9084 | return FALSE; | |
9085 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9086 | if (bfd_big_endian (info->output_bfd)) |
9087 | r[0].r_offset += 2; | |
176a0d42 AM |
9088 | r[0].r_addend = dest; |
9089 | } | |
9090 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
721956f4 AM |
9091 | size = p - loc; |
9092 | break; | |
9093 | ||
9094 | default: | |
9095 | BFD_FAIL (); | |
b34976b6 | 9096 | return FALSE; |
721956f4 AM |
9097 | } |
9098 | ||
eea6121a | 9099 | stub_entry->stub_sec->size += size; |
97b639ba | 9100 | |
ee75fd95 | 9101 | if (htab->emit_stub_syms) |
97b639ba AM |
9102 | { |
9103 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
9104 | size_t len1, len2; |
9105 | char *name; | |
9106 | const char *const stub_str[] = { "long_branch", | |
9107 | "long_branch_r2off", | |
9108 | "plt_branch", | |
9109 | "plt_branch_r2off", | |
9110 | "plt_call" }; | |
9111 | ||
9112 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
9113 | len2 = strlen (stub_entry->root.string); | |
9114 | name = bfd_malloc (len1 + len2 + 2); | |
9115 | if (name == NULL) | |
9116 | return FALSE; | |
9117 | memcpy (name, stub_entry->root.string, 9); | |
9118 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
9119 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
9120 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
9121 | if (h == NULL) |
9122 | return FALSE; | |
9123 | if (h->root.type == bfd_link_hash_new) | |
9124 | { | |
9125 | h->root.type = bfd_link_hash_defined; | |
9126 | h->root.u.def.section = stub_entry->stub_sec; | |
9127 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
9128 | h->ref_regular = 1; |
9129 | h->def_regular = 1; | |
9130 | h->ref_regular_nonweak = 1; | |
9131 | h->forced_local = 1; | |
9132 | h->non_elf = 0; | |
97b639ba AM |
9133 | } |
9134 | } | |
9135 | ||
b34976b6 | 9136 | return TRUE; |
721956f4 AM |
9137 | } |
9138 | ||
9139 | /* As above, but don't actually build the stub. Just bump offset so | |
9140 | we know stub section sizes, and select plt_branch stubs where | |
9141 | long_branch stubs won't do. */ | |
9142 | ||
b34976b6 | 9143 | static bfd_boolean |
4ce794b7 | 9144 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
9145 | { |
9146 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 9147 | struct bfd_link_info *info; |
721956f4 AM |
9148 | struct ppc_link_hash_table *htab; |
9149 | bfd_vma off; | |
9150 | int size; | |
9151 | ||
9152 | /* Massage our args to the form they really have. */ | |
9153 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
9154 | info = in_arg; |
9155 | ||
9156 | htab = ppc_hash_table (info); | |
721956f4 AM |
9157 | |
9158 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
9159 | { | |
e054468f AM |
9160 | asection *plt; |
9161 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 9162 | if (off >= (bfd_vma) -2) |
411e1bfb | 9163 | abort (); |
e054468f AM |
9164 | plt = htab->plt; |
9165 | if (!htab->elf.dynamic_sections_created) | |
9166 | plt = htab->iplt; | |
9167 | off += (plt->output_offset | |
9168 | + plt->output_section->vma | |
9169 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 9170 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9171 | |
ad8e1ba5 | 9172 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
9173 | if (PPC_HA (off) == 0) |
9174 | size -= 4; | |
4ce794b7 | 9175 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 | 9176 | size += 4; |
176a0d42 AM |
9177 | if (info->emitrelocations) |
9178 | { | |
9179 | stub_entry->stub_sec->reloc_count | |
9180 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
9181 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9182 | } | |
721956f4 AM |
9183 | } |
9184 | else | |
9185 | { | |
ad8e1ba5 AM |
9186 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
9187 | variants. */ | |
ac2df442 AM |
9188 | bfd_vma r2off = 0; |
9189 | ||
721956f4 AM |
9190 | off = (stub_entry->target_value |
9191 | + stub_entry->target_section->output_offset | |
9192 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 9193 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
9194 | + stub_entry->stub_sec->output_offset |
9195 | + stub_entry->stub_sec->output_section->vma); | |
9196 | ||
ad8e1ba5 AM |
9197 | /* Reset the stub type from the plt variant in case we now |
9198 | can reach with a shorter stub. */ | |
9199 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
9200 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
9201 | ||
9202 | size = 4; | |
9203 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
9204 | { | |
ac2df442 AM |
9205 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
9206 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9207 | size = 12; | |
9208 | if (PPC_HA (r2off) != 0) | |
9209 | size = 16; | |
9210 | off -= size - 4; | |
ad8e1ba5 AM |
9211 | } |
9212 | ||
9213 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
9214 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9215 | { | |
9216 | struct ppc_branch_hash_entry *br_entry; | |
9217 | ||
9218 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
9219 | stub_entry->root.string + 9, | |
b34976b6 | 9220 | TRUE, FALSE); |
721956f4 AM |
9221 | if (br_entry == NULL) |
9222 | { | |
9223 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 9224 | stub_entry->root.string); |
b34976b6 AM |
9225 | htab->stub_error = TRUE; |
9226 | return FALSE; | |
721956f4 AM |
9227 | } |
9228 | ||
9229 | if (br_entry->iter != htab->stub_iteration) | |
9230 | { | |
9231 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
9232 | br_entry->offset = htab->brlt->size; |
9233 | htab->brlt->size += 8; | |
63bc6f6c | 9234 | |
ee75fd95 | 9235 | if (htab->relbrlt != NULL) |
eea6121a | 9236 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
9237 | else if (info->emitrelocations) |
9238 | { | |
9239 | htab->brlt->reloc_count += 1; | |
9240 | htab->brlt->flags |= SEC_RELOC; | |
9241 | } | |
721956f4 | 9242 | } |
ad8e1ba5 AM |
9243 | |
9244 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
9245 | off = (br_entry->offset |
9246 | + htab->brlt->output_offset | |
9247 | + htab->brlt->output_section->vma | |
9248 | - elf_gp (htab->brlt->output_section->owner) | |
9249 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9250 | ||
176a0d42 AM |
9251 | if (info->emitrelocations) |
9252 | { | |
9253 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
9254 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9255 | } | |
9256 | ||
ac2df442 AM |
9257 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9258 | { | |
9259 | size = 12; | |
176a0d42 | 9260 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9261 | size = 16; |
9262 | } | |
9263 | else | |
9264 | { | |
9265 | size = 20; | |
176a0d42 | 9266 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9267 | size += 4; |
9268 | ||
9269 | if (PPC_HA (r2off) != 0) | |
9270 | size += 4; | |
9271 | } | |
721956f4 | 9272 | } |
84f5d08e AM |
9273 | else if (info->emitrelocations) |
9274 | { | |
9275 | stub_entry->stub_sec->reloc_count += 1; | |
9276 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9277 | } | |
721956f4 AM |
9278 | } |
9279 | ||
eea6121a | 9280 | stub_entry->stub_sec->size += size; |
b34976b6 | 9281 | return TRUE; |
721956f4 AM |
9282 | } |
9283 | ||
9284 | /* Set up various things so that we can make a list of input sections | |
9285 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 9286 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
9287 | |
9288 | int | |
4c52953f AM |
9289 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
9290 | struct bfd_link_info *info, | |
9291 | int no_multi_toc) | |
721956f4 AM |
9292 | { |
9293 | bfd *input_bfd; | |
734b6cf9 | 9294 | int top_id, top_index, id; |
721956f4 | 9295 | asection *section; |
734b6cf9 | 9296 | asection **input_list; |
721956f4 AM |
9297 | bfd_size_type amt; |
9298 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9299 | ||
4c52953f AM |
9300 | htab->no_multi_toc = no_multi_toc; |
9301 | ||
4ce794b7 | 9302 | if (htab->brlt == NULL) |
721956f4 AM |
9303 | return 0; |
9304 | ||
1e2f5b6e | 9305 | /* Find the top input section id. */ |
3d6f9012 | 9306 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
9307 | input_bfd != NULL; |
9308 | input_bfd = input_bfd->link_next) | |
9309 | { | |
721956f4 AM |
9310 | for (section = input_bfd->sections; |
9311 | section != NULL; | |
9312 | section = section->next) | |
9313 | { | |
9314 | if (top_id < section->id) | |
9315 | top_id = section->id; | |
9316 | } | |
9317 | } | |
721956f4 | 9318 | |
8f3bab57 | 9319 | htab->top_id = top_id; |
721956f4 | 9320 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 9321 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
9322 | if (htab->stub_group == NULL) |
9323 | return -1; | |
9324 | ||
3d6f9012 AM |
9325 | /* Set toc_off for com, und, abs and ind sections. */ |
9326 | for (id = 0; id < 3; id++) | |
9327 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 9328 | |
3d6f9012 | 9329 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
9330 | |
9331 | /* We can't use output_bfd->section_count here to find the top output | |
9332 | section index as some sections may have been removed, and | |
8423293d | 9333 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
9334 | for (section = output_bfd->sections, top_index = 0; |
9335 | section != NULL; | |
9336 | section = section->next) | |
9337 | { | |
9338 | if (top_index < section->index) | |
9339 | top_index = section->index; | |
9340 | } | |
9341 | ||
9342 | htab->top_index = top_index; | |
9343 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 9344 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
9345 | htab->input_list = input_list; |
9346 | if (input_list == NULL) | |
9347 | return -1; | |
9348 | ||
721956f4 AM |
9349 | return 1; |
9350 | } | |
9351 | ||
e717da7e AM |
9352 | /* The linker repeatedly calls this function for each TOC input section |
9353 | and linker generated GOT section. Group input bfds such that the toc | |
9354 | within a group is less than 64k in size. Will break with cute linker | |
9355 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
9356 | |
9357 | void | |
4ce794b7 | 9358 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
9359 | { |
9360 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9361 | ||
4c52953f AM |
9362 | if (!htab->no_multi_toc) |
9363 | { | |
9364 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
9365 | bfd_vma off = addr - htab->toc_curr; | |
9366 | ||
9367 | if (off + isec->size > 0x10000) | |
9368 | htab->toc_curr = addr; | |
99877b66 | 9369 | |
4c52953f AM |
9370 | elf_gp (isec->owner) = (htab->toc_curr |
9371 | - elf_gp (isec->output_section->owner) | |
9372 | + TOC_BASE_OFF); | |
9373 | } | |
ad8e1ba5 AM |
9374 | } |
9375 | ||
9376 | /* Called after the last call to the above function. */ | |
9377 | ||
9378 | void | |
4c52953f | 9379 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
9380 | { |
9381 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 9382 | |
4c52953f AM |
9383 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
9384 | ||
ad8e1ba5 AM |
9385 | /* toc_curr tracks the TOC offset used for code sections below in |
9386 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 9387 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
9388 | } |
9389 | ||
9b5ecbd0 AM |
9390 | /* No toc references were found in ISEC. If the code in ISEC makes no |
9391 | calls, then there's no need to use toc adjusting stubs when branching | |
9392 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
9393 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
9394 | needed, and 2 if a cyclical call-graph was found but no other reason | |
9395 | for a stub was detected. If called from the top level, a return of | |
9396 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
9397 | |
9398 | static int | |
4ce794b7 | 9399 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 9400 | { |
4c52953f AM |
9401 | Elf_Internal_Rela *relstart, *rel; |
9402 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 9403 | int ret; |
4c52953f | 9404 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 9405 | |
772119ce AM |
9406 | /* We know none of our code bearing sections will need toc stubs. */ |
9407 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
9408 | return 0; | |
9409 | ||
eea6121a | 9410 | if (isec->size == 0) |
082c50f8 AM |
9411 | return 0; |
9412 | ||
4c52953f AM |
9413 | if (isec->output_section == NULL) |
9414 | return 0; | |
9415 | ||
4c52953f AM |
9416 | if (isec->reloc_count == 0) |
9417 | return 0; | |
9418 | ||
9419 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
9420 | info->keep_memory); | |
9421 | if (relstart == NULL) | |
9422 | return -1; | |
9423 | ||
9424 | /* Look for branches to outside of this section. */ | |
9425 | local_syms = NULL; | |
9426 | ret = 0; | |
9427 | htab = ppc_hash_table (info); | |
9428 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 9429 | { |
4c52953f AM |
9430 | enum elf_ppc64_reloc_type r_type; |
9431 | unsigned long r_symndx; | |
9432 | struct elf_link_hash_entry *h; | |
90aecf7a | 9433 | struct ppc_link_hash_entry *eh; |
4c52953f AM |
9434 | Elf_Internal_Sym *sym; |
9435 | asection *sym_sec; | |
74f0fb50 | 9436 | struct _opd_sec_data *opd; |
4c52953f AM |
9437 | bfd_vma sym_value; |
9438 | bfd_vma dest; | |
9439 | ||
9440 | r_type = ELF64_R_TYPE (rel->r_info); | |
9441 | if (r_type != R_PPC64_REL24 | |
9442 | && r_type != R_PPC64_REL14 | |
9443 | && r_type != R_PPC64_REL14_BRTAKEN | |
9444 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
9445 | continue; | |
9446 | ||
9447 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9448 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
9449 | isec->owner)) | |
9b5ecbd0 | 9450 | { |
4c52953f AM |
9451 | ret = -1; |
9452 | break; | |
9b5ecbd0 | 9453 | } |
9b5ecbd0 | 9454 | |
2917689a | 9455 | /* Calls to dynamic lib functions go through a plt call stub |
90aecf7a AM |
9456 | that uses r2. */ |
9457 | eh = (struct ppc_link_hash_entry *) h; | |
9458 | if (eh != NULL | |
9459 | && (eh->elf.plt.plist != NULL | |
9460 | || (eh->oh != NULL | |
9461 | && eh->oh->elf.plt.plist != NULL))) | |
2917689a | 9462 | { |
90aecf7a AM |
9463 | ret = 1; |
9464 | break; | |
2917689a AM |
9465 | } |
9466 | ||
90aecf7a AM |
9467 | if (sym_sec == NULL) |
9468 | /* Ignore other undefined symbols. */ | |
9469 | continue; | |
9470 | ||
2917689a AM |
9471 | /* Assume branches to other sections not included in the link need |
9472 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
9473 | if (sym_sec->output_section == NULL) |
9474 | { | |
9475 | ret = 1; | |
9476 | break; | |
9477 | } | |
9478 | ||
9479 | if (h == NULL) | |
9480 | sym_value = sym->st_value; | |
9481 | else | |
9482 | { | |
9483 | if (h->root.type != bfd_link_hash_defined | |
9484 | && h->root.type != bfd_link_hash_defweak) | |
9485 | abort (); | |
9486 | sym_value = h->root.u.def.value; | |
9487 | } | |
9488 | sym_value += rel->r_addend; | |
9489 | ||
9490 | /* If this branch reloc uses an opd sym, find the code section. */ | |
74f0fb50 AM |
9491 | opd = get_opd_info (sym_sec); |
9492 | if (opd != NULL) | |
4c52953f | 9493 | { |
74f0fb50 | 9494 | if (h == NULL && opd->adjust != NULL) |
4c52953f AM |
9495 | { |
9496 | long adjust; | |
9497 | ||
74f0fb50 | 9498 | adjust = opd->adjust[sym->st_value / 8]; |
4c52953f AM |
9499 | if (adjust == -1) |
9500 | /* Assume deleted functions won't ever be called. */ | |
9501 | continue; | |
9502 | sym_value += adjust; | |
9503 | } | |
9504 | ||
9505 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
9506 | if (dest == (bfd_vma) -1) | |
9507 | continue; | |
9508 | } | |
9509 | else | |
9510 | dest = (sym_value | |
9511 | + sym_sec->output_offset | |
9512 | + sym_sec->output_section->vma); | |
9513 | ||
9514 | /* Ignore branch to self. */ | |
9515 | if (sym_sec == isec) | |
9516 | continue; | |
9517 | ||
9518 | /* If the called function uses the toc, we need a stub. */ | |
9519 | if (sym_sec->has_toc_reloc | |
9520 | || sym_sec->makes_toc_func_call) | |
9521 | { | |
9522 | ret = 1; | |
9523 | break; | |
9524 | } | |
9525 | ||
9526 | /* Assume any branch that needs a long branch stub might in fact | |
9527 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
9528 | else if (dest - (isec->output_offset | |
9529 | + isec->output_section->vma | |
9530 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
9531 | { |
9532 | ret = 1; | |
9533 | break; | |
9534 | } | |
4c52953f AM |
9535 | |
9536 | /* If calling back to a section in the process of being tested, we | |
9537 | can't say for sure that no toc adjusting stubs are needed, so | |
9538 | don't return zero. */ | |
9539 | else if (sym_sec->call_check_in_progress) | |
9540 | ret = 2; | |
9541 | ||
9542 | /* Branches to another section that itself doesn't have any TOC | |
9543 | references are OK. Recursively call ourselves to check. */ | |
9544 | else if (sym_sec->id <= htab->top_id | |
9545 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
9546 | { | |
9547 | int recur; | |
9548 | ||
9549 | /* Mark current section as indeterminate, so that other | |
9550 | sections that call back to current won't be marked as | |
9551 | known. */ | |
9552 | isec->call_check_in_progress = 1; | |
9553 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
9554 | isec->call_check_in_progress = 0; | |
9555 | ||
9556 | if (recur < 0) | |
9557 | { | |
9558 | /* An error. Exit. */ | |
9559 | ret = -1; | |
9560 | break; | |
9561 | } | |
9562 | else if (recur <= 1) | |
9563 | { | |
9564 | /* Known result. Mark as checked and set section flag. */ | |
9565 | htab->stub_group[sym_sec->id].toc_off = 1; | |
9566 | if (recur != 0) | |
9567 | { | |
9568 | sym_sec->makes_toc_func_call = 1; | |
9569 | ret = 1; | |
9570 | break; | |
9571 | } | |
9572 | } | |
9573 | else | |
9574 | { | |
9575 | /* Unknown result. Continue checking. */ | |
9576 | ret = 2; | |
9577 | } | |
9578 | } | |
9b5ecbd0 AM |
9579 | } |
9580 | ||
4c52953f | 9581 | if (local_syms != NULL |
0ffa91dd | 9582 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
4c52953f AM |
9583 | free (local_syms); |
9584 | if (elf_section_data (isec)->relocs != relstart) | |
9585 | free (relstart); | |
9586 | ||
9b5ecbd0 AM |
9587 | return ret; |
9588 | } | |
9589 | ||
721956f4 AM |
9590 | /* The linker repeatedly calls this function for each input section, |
9591 | in the order that input sections are linked into output sections. | |
9592 | Build lists of input sections to determine groupings between which | |
9593 | we may insert linker stubs. */ | |
9594 | ||
9b5ecbd0 | 9595 | bfd_boolean |
4ce794b7 | 9596 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
9597 | { |
9598 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9599 | ||
734b6cf9 AM |
9600 | if ((isec->output_section->flags & SEC_CODE) != 0 |
9601 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 9602 | { |
734b6cf9 | 9603 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 9604 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 9605 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
9606 | /* This happens to make the list in reverse order, |
9607 | which is what we want. */ | |
734b6cf9 AM |
9608 | PREV_SEC (isec) = *list; |
9609 | *list = isec; | |
721956f4 | 9610 | } |
ad8e1ba5 | 9611 | |
4c52953f | 9612 | if (htab->multi_toc_needed) |
9b5ecbd0 | 9613 | { |
4c52953f AM |
9614 | /* If a code section has a function that uses the TOC then we need |
9615 | to use the right TOC (obviously). Also, make sure that .opd gets | |
9616 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
9617 | can't find their function symbol (shouldn't ever happen now). |
9618 | Also specially treat .fixup for the linux kernel. .fixup | |
9619 | contains branches, but only back to the function that hit an | |
9620 | exception. */ | |
9621 | if (isec->has_toc_reloc | |
9622 | || (isec->flags & SEC_CODE) == 0 | |
9623 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
9624 | { |
9625 | if (elf_gp (isec->owner) != 0) | |
9626 | htab->toc_curr = elf_gp (isec->owner); | |
9627 | } | |
9628 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9629 | { | |
9630 | int ret = toc_adjusting_stub_needed (info, isec); | |
9631 | if (ret < 0) | |
9632 | return FALSE; | |
9633 | else | |
9634 | isec->makes_toc_func_call = ret & 1; | |
9635 | } | |
9b5ecbd0 | 9636 | } |
ad8e1ba5 AM |
9637 | |
9638 | /* Functions that don't use the TOC can belong in any TOC group. | |
9639 | Use the last TOC base. This happens to make _init and _fini | |
9640 | pasting work. */ | |
9641 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9642 | return TRUE; |
721956f4 AM |
9643 | } |
9644 | ||
9645 | /* See whether we can group stub sections together. Grouping stub | |
9646 | sections may result in fewer stubs. More importantly, we need to | |
9647 | put all .init* and .fini* stubs at the beginning of the .init or | |
9648 | .fini output sections respectively, because glibc splits the | |
9649 | _init and _fini functions into multiple parts. Putting a stub in | |
9650 | the middle of a function is not a good idea. */ | |
9651 | ||
9652 | static void | |
4ce794b7 AM |
9653 | group_sections (struct ppc_link_hash_table *htab, |
9654 | bfd_size_type stub_group_size, | |
9655 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9656 | { |
7c8fe5c4 AM |
9657 | asection **list; |
9658 | bfd_size_type stub14_group_size; | |
9659 | bfd_boolean suppress_size_errors; | |
9660 | ||
9661 | suppress_size_errors = FALSE; | |
9662 | stub14_group_size = stub_group_size; | |
9663 | if (stub_group_size == 1) | |
9664 | { | |
9665 | /* Default values. */ | |
9666 | if (stubs_always_before_branch) | |
9667 | { | |
9668 | stub_group_size = 0x1e00000; | |
9669 | stub14_group_size = 0x7800; | |
9670 | } | |
9671 | else | |
9672 | { | |
9673 | stub_group_size = 0x1c00000; | |
9674 | stub14_group_size = 0x7000; | |
9675 | } | |
9676 | suppress_size_errors = TRUE; | |
9677 | } | |
9678 | ||
9679 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9680 | do |
721956f4 | 9681 | { |
734b6cf9 AM |
9682 | asection *tail = *list; |
9683 | while (tail != NULL) | |
721956f4 | 9684 | { |
734b6cf9 AM |
9685 | asection *curr; |
9686 | asection *prev; | |
9687 | bfd_size_type total; | |
9688 | bfd_boolean big_sec; | |
9689 | bfd_vma curr_toc; | |
9690 | ||
9691 | curr = tail; | |
eea6121a | 9692 | total = tail->size; |
7c8fe5c4 AM |
9693 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9694 | ? stub14_group_size : stub_group_size); | |
9695 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9696 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9697 | tail->owner, tail); | |
734b6cf9 AM |
9698 | curr_toc = htab->stub_group[tail->id].toc_off; |
9699 | ||
9700 | while ((prev = PREV_SEC (curr)) != NULL | |
9701 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9702 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9703 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9704 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9705 | curr = prev; |
9706 | ||
9707 | /* OK, the size from the start of CURR to the end is less | |
9708 | than stub_group_size and thus can be handled by one stub | |
9709 | section. (or the tail section is itself larger than | |
9710 | stub_group_size, in which case we may be toast.) We | |
9711 | should really be keeping track of the total size of stubs | |
9712 | added here, as stubs contribute to the final output | |
9713 | section size. That's a little tricky, and this way will | |
9714 | only break if stubs added make the total size more than | |
9715 | 2^25, ie. for the default stub_group_size, if stubs total | |
9716 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9717 | do | |
721956f4 AM |
9718 | { |
9719 | prev = PREV_SEC (tail); | |
734b6cf9 | 9720 | /* Set up this stub group. */ |
721956f4 AM |
9721 | htab->stub_group[tail->id].link_sec = curr; |
9722 | } | |
734b6cf9 AM |
9723 | while (tail != curr && (tail = prev) != NULL); |
9724 | ||
9725 | /* But wait, there's more! Input sections up to stub_group_size | |
9726 | bytes before the stub section can be handled by it too. | |
9727 | Don't do this if we have a really large section after the | |
9728 | stubs, as adding more stubs increases the chance that | |
9729 | branches may not reach into the stub section. */ | |
9730 | if (!stubs_always_before_branch && !big_sec) | |
9731 | { | |
9732 | total = 0; | |
9733 | while (prev != NULL | |
9734 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9735 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9736 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9737 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9738 | { | |
9739 | tail = prev; | |
9740 | prev = PREV_SEC (tail); | |
9741 | htab->stub_group[tail->id].link_sec = curr; | |
9742 | } | |
9743 | } | |
9744 | tail = prev; | |
721956f4 AM |
9745 | } |
9746 | } | |
734b6cf9 AM |
9747 | while (list-- != htab->input_list); |
9748 | free (htab->input_list); | |
721956f4 AM |
9749 | #undef PREV_SEC |
9750 | } | |
9751 | ||
721956f4 AM |
9752 | /* Determine and set the size of the stub section for a final link. |
9753 | ||
9754 | The basic idea here is to examine all the relocations looking for | |
9755 | PC-relative calls to a target that is unreachable with a "bl" | |
9756 | instruction. */ | |
9757 | ||
b34976b6 | 9758 | bfd_boolean |
4ce794b7 | 9759 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9760 | struct bfd_link_info *info, |
9761 | bfd_signed_vma group_size, | |
9762 | asection *(*add_stub_section) (const char *, asection *), | |
9763 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9764 | { |
9765 | bfd_size_type stub_group_size; | |
b34976b6 | 9766 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9767 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9768 | ||
9769 | /* Stash our params away. */ | |
721956f4 AM |
9770 | htab->add_stub_section = add_stub_section; |
9771 | htab->layout_sections_again = layout_sections_again; | |
9772 | stubs_always_before_branch = group_size < 0; | |
9773 | if (group_size < 0) | |
9774 | stub_group_size = -group_size; | |
9775 | else | |
9776 | stub_group_size = group_size; | |
721956f4 AM |
9777 | |
9778 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9779 | ||
721956f4 AM |
9780 | while (1) |
9781 | { | |
9782 | bfd *input_bfd; | |
9783 | unsigned int bfd_indx; | |
9784 | asection *stub_sec; | |
721956f4 AM |
9785 | |
9786 | htab->stub_iteration += 1; | |
721956f4 AM |
9787 | |
9788 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9789 | input_bfd != NULL; | |
9790 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9791 | { | |
9792 | Elf_Internal_Shdr *symtab_hdr; | |
9793 | asection *section; | |
6cdc0ccc | 9794 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9795 | |
0c8d6e5c | 9796 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
9797 | continue; |
9798 | ||
721956f4 | 9799 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 9800 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
9801 | if (symtab_hdr->sh_info == 0) |
9802 | continue; | |
9803 | ||
721956f4 AM |
9804 | /* Walk over each section attached to the input bfd. */ |
9805 | for (section = input_bfd->sections; | |
9806 | section != NULL; | |
9807 | section = section->next) | |
9808 | { | |
721956f4 | 9809 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9810 | |
9811 | /* If there aren't any relocs, then there's nothing more | |
9812 | to do. */ | |
9813 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9814 | || (section->flags & SEC_ALLOC) == 0 |
9815 | || (section->flags & SEC_LOAD) == 0 | |
9816 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9817 | || section->reloc_count == 0) |
9818 | continue; | |
9819 | ||
9820 | /* If this section is a link-once section that will be | |
9821 | discarded, then don't create any stubs. */ | |
9822 | if (section->output_section == NULL | |
9823 | || section->output_section->owner != output_bfd) | |
9824 | continue; | |
9825 | ||
1e2f5b6e AM |
9826 | /* Get the relocs. */ |
9827 | internal_relocs | |
4ce794b7 | 9828 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9829 | info->keep_memory); |
721956f4 | 9830 | if (internal_relocs == NULL) |
1e2f5b6e | 9831 | goto error_ret_free_local; |
721956f4 AM |
9832 | |
9833 | /* Now examine each relocation. */ | |
9834 | irela = internal_relocs; | |
9835 | irelaend = irela + section->reloc_count; | |
9836 | for (; irela < irelaend; irela++) | |
9837 | { | |
4ce794b7 AM |
9838 | enum elf_ppc64_reloc_type r_type; |
9839 | unsigned int r_indx; | |
721956f4 AM |
9840 | enum ppc_stub_type stub_type; |
9841 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9842 | asection *sym_sec, *code_sec; |
e054468f | 9843 | bfd_vma sym_value, code_value; |
721956f4 | 9844 | bfd_vma destination; |
8843416a | 9845 | bfd_boolean ok_dest; |
721956f4 | 9846 | struct ppc_link_hash_entry *hash; |
8387904d | 9847 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9848 | struct elf_link_hash_entry *h; |
9849 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9850 | char *stub_name; |
9851 | const asection *id_sec; | |
74f0fb50 | 9852 | struct _opd_sec_data *opd; |
e054468f | 9853 | struct plt_entry *plt_ent; |
721956f4 AM |
9854 | |
9855 | r_type = ELF64_R_TYPE (irela->r_info); | |
9856 | r_indx = ELF64_R_SYM (irela->r_info); | |
9857 | ||
4ce794b7 | 9858 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9859 | { |
9860 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9861 | goto error_ret_free_internal; |
721956f4 AM |
9862 | } |
9863 | ||
9864 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9865 | if (r_type != R_PPC64_REL24 |
9866 | && r_type != R_PPC64_REL14 | |
9867 | && r_type != R_PPC64_REL14_BRTAKEN | |
9868 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9869 | continue; |
9870 | ||
9871 | /* Now determine the call target, its name, value, | |
9872 | section. */ | |
411e1bfb AM |
9873 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9874 | r_indx, input_bfd)) | |
9875 | goto error_ret_free_internal; | |
9876 | hash = (struct ppc_link_hash_entry *) h; | |
9877 | ||
8843416a | 9878 | ok_dest = FALSE; |
8387904d | 9879 | fdh = NULL; |
7fe2b9a6 | 9880 | sym_value = 0; |
411e1bfb | 9881 | if (hash == NULL) |
721956f4 | 9882 | { |
411e1bfb | 9883 | sym_value = sym->st_value; |
8843416a | 9884 | ok_dest = TRUE; |
721956f4 | 9885 | } |
7fe2b9a6 AM |
9886 | else if (hash->elf.root.type == bfd_link_hash_defined |
9887 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9888 | { | |
9889 | sym_value = hash->elf.root.u.def.value; | |
9890 | if (sym_sec->output_section != NULL) | |
9891 | ok_dest = TRUE; | |
9892 | } | |
9893 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9894 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9895 | { |
99877b66 | 9896 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9897 | use the func descriptor sym instead if it is |
9898 | defined. */ | |
ceb1f1ef | 9899 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9900 | && (fdh = get_fdh (hash, htab)) != NULL) |
9901 | { | |
8387904d AM |
9902 | if (fdh->elf.root.type == bfd_link_hash_defined |
9903 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9904 | { | |
9905 | sym_sec = fdh->elf.root.u.def.section; | |
9906 | sym_value = fdh->elf.root.u.def.value; | |
9907 | if (sym_sec->output_section != NULL) | |
9908 | ok_dest = TRUE; | |
9909 | } | |
99877b66 AM |
9910 | else |
9911 | fdh = NULL; | |
8387904d | 9912 | } |
7fe2b9a6 AM |
9913 | } |
9914 | else | |
9915 | { | |
9916 | bfd_set_error (bfd_error_bad_value); | |
9917 | goto error_ret_free_internal; | |
721956f4 AM |
9918 | } |
9919 | ||
8843416a AM |
9920 | destination = 0; |
9921 | if (ok_dest) | |
9922 | { | |
9923 | sym_value += irela->r_addend; | |
9924 | destination = (sym_value | |
9925 | + sym_sec->output_offset | |
9926 | + sym_sec->output_section->vma); | |
9927 | } | |
9928 | ||
8387904d | 9929 | code_sec = sym_sec; |
e054468f | 9930 | code_value = sym_value; |
74f0fb50 AM |
9931 | opd = get_opd_info (sym_sec); |
9932 | if (opd != NULL) | |
8387904d AM |
9933 | { |
9934 | bfd_vma dest; | |
9935 | ||
74f0fb50 | 9936 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 9937 | { |
74f0fb50 | 9938 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
9939 | if (adjust == -1) |
9940 | continue; | |
e054468f | 9941 | code_value += adjust; |
8387904d AM |
9942 | sym_value += adjust; |
9943 | } | |
9944 | dest = opd_entry_value (sym_sec, sym_value, | |
e054468f | 9945 | &code_sec, &code_value); |
8387904d AM |
9946 | if (dest != (bfd_vma) -1) |
9947 | { | |
9948 | destination = dest; | |
9949 | if (fdh != NULL) | |
9950 | { | |
9951 | /* Fixup old ABI sym to point at code | |
9952 | entry. */ | |
99877b66 | 9953 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 9954 | hash->elf.root.u.def.section = code_sec; |
e054468f | 9955 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
9956 | } |
9957 | } | |
9958 | } | |
9959 | ||
721956f4 | 9960 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 9961 | plt_ent = NULL; |
721956f4 | 9962 | stub_type = ppc_type_of_stub (section, irela, &hash, |
e054468f | 9963 | &plt_ent, destination); |
ad8e1ba5 AM |
9964 | |
9965 | if (stub_type != ppc_stub_plt_call) | |
9966 | { | |
9967 | /* Check whether we need a TOC adjusting stub. | |
9968 | Since the linker pastes together pieces from | |
9969 | different object files when creating the | |
9970 | _init and _fini functions, it may be that a | |
9971 | call to what looks like a local sym is in | |
9972 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9973 | if (code_sec != NULL |
9974 | && code_sec->output_section != NULL | |
9975 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9976 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9977 | && (code_sec->has_toc_reloc |
9978 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9979 | stub_type = ppc_stub_long_branch_r2off; |
9980 | } | |
9981 | ||
721956f4 AM |
9982 | if (stub_type == ppc_stub_none) |
9983 | continue; | |
9984 | ||
411e1bfb AM |
9985 | /* __tls_get_addr calls might be eliminated. */ |
9986 | if (stub_type != ppc_stub_plt_call | |
9987 | && hash != NULL | |
8387904d AM |
9988 | && (hash == htab->tls_get_addr |
9989 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9990 | && section->has_tls_reloc |
9991 | && irela != internal_relocs) | |
9992 | { | |
9993 | /* Get tls info. */ | |
e7b938ca | 9994 | char *tls_mask; |
411e1bfb | 9995 | |
3a71aa26 | 9996 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
9997 | irela - 1, input_bfd)) |
9998 | goto error_ret_free_internal; | |
e7b938ca | 9999 | if (*tls_mask != 0) |
411e1bfb AM |
10000 | continue; |
10001 | } | |
10002 | ||
721956f4 AM |
10003 | /* Support for grouping stub sections. */ |
10004 | id_sec = htab->stub_group[section->id].link_sec; | |
10005 | ||
10006 | /* Get the name of this stub. */ | |
10007 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
10008 | if (!stub_name) | |
10009 | goto error_ret_free_internal; | |
10010 | ||
10011 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 10012 | stub_name, FALSE, FALSE); |
721956f4 AM |
10013 | if (stub_entry != NULL) |
10014 | { | |
10015 | /* The proper stub has already been created. */ | |
10016 | free (stub_name); | |
10017 | continue; | |
10018 | } | |
10019 | ||
10020 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
10021 | if (stub_entry == NULL) | |
10022 | { | |
10023 | free (stub_name); | |
6cdc0ccc AM |
10024 | error_ret_free_internal: |
10025 | if (elf_section_data (section)->relocs == NULL) | |
10026 | free (internal_relocs); | |
10027 | error_ret_free_local: | |
10028 | if (local_syms != NULL | |
10029 | && (symtab_hdr->contents | |
10030 | != (unsigned char *) local_syms)) | |
10031 | free (local_syms); | |
b34976b6 | 10032 | return FALSE; |
721956f4 AM |
10033 | } |
10034 | ||
ad8e1ba5 | 10035 | stub_entry->stub_type = stub_type; |
e054468f AM |
10036 | if (stub_type != ppc_stub_plt_call) |
10037 | { | |
10038 | stub_entry->target_value = code_value; | |
10039 | stub_entry->target_section = code_sec; | |
10040 | } | |
10041 | else | |
10042 | { | |
10043 | stub_entry->target_value = sym_value; | |
10044 | stub_entry->target_section = sym_sec; | |
10045 | } | |
721956f4 | 10046 | stub_entry->h = hash; |
e054468f | 10047 | stub_entry->plt_ent = plt_ent; |
411e1bfb | 10048 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
10049 | |
10050 | if (stub_entry->h != NULL) | |
10051 | htab->stub_globals += 1; | |
721956f4 AM |
10052 | } |
10053 | ||
10054 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 10055 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 10056 | free (internal_relocs); |
721956f4 | 10057 | } |
6cdc0ccc AM |
10058 | |
10059 | if (local_syms != NULL | |
10060 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
10061 | { | |
10062 | if (!info->keep_memory) | |
10063 | free (local_syms); | |
10064 | else | |
10065 | symtab_hdr->contents = (unsigned char *) local_syms; | |
10066 | } | |
721956f4 AM |
10067 | } |
10068 | ||
5c3dead3 | 10069 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
10070 | stub sections. */ |
10071 | for (stub_sec = htab->stub_bfd->sections; | |
10072 | stub_sec != NULL; | |
10073 | stub_sec = stub_sec->next) | |
e717da7e | 10074 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 10075 | { |
5c3dead3 | 10076 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
10077 | stub_sec->size = 0; |
10078 | stub_sec->reloc_count = 0; | |
84f5d08e | 10079 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 10080 | } |
eea6121a AM |
10081 | |
10082 | htab->brlt->size = 0; | |
84f5d08e AM |
10083 | htab->brlt->reloc_count = 0; |
10084 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 10085 | if (htab->relbrlt != NULL) |
eea6121a | 10086 | htab->relbrlt->size = 0; |
721956f4 | 10087 | |
63bc6f6c | 10088 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 10089 | |
176a0d42 AM |
10090 | if (info->emitrelocations |
10091 | && htab->glink != NULL && htab->glink->size != 0) | |
10092 | { | |
10093 | htab->glink->reloc_count = 1; | |
10094 | htab->glink->flags |= SEC_RELOC; | |
10095 | } | |
10096 | ||
5c3dead3 AM |
10097 | for (stub_sec = htab->stub_bfd->sections; |
10098 | stub_sec != NULL; | |
10099 | stub_sec = stub_sec->next) | |
10100 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
10101 | && stub_sec->rawsize != stub_sec->size) | |
10102 | break; | |
10103 | ||
10104 | /* Exit from this loop when no stubs have been added, and no stubs | |
10105 | have changed size. */ | |
10106 | if (stub_sec == NULL) | |
10107 | break; | |
10108 | ||
721956f4 AM |
10109 | /* Ask the linker to do its stuff. */ |
10110 | (*htab->layout_sections_again) (); | |
10111 | } | |
10112 | ||
c456f082 | 10113 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
10114 | section is empty, but it's too late. If we strip sections here, |
10115 | the dynamic symbol table is corrupted since the section symbol | |
10116 | for the stripped section isn't written. */ | |
721956f4 | 10117 | |
b34976b6 | 10118 | return TRUE; |
721956f4 AM |
10119 | } |
10120 | ||
10121 | /* Called after we have determined section placement. If sections | |
805fc799 | 10122 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 10123 | |
805fc799 | 10124 | bfd_vma |
4ce794b7 | 10125 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 10126 | { |
805fc799 AM |
10127 | asection *s; |
10128 | bfd_vma TOCstart; | |
721956f4 | 10129 | |
805fc799 AM |
10130 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
10131 | order. The TOC starts where the first of these sections starts. */ | |
10132 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 10133 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10134 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 10135 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10136 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 10137 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10138 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 10139 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
10140 | { |
10141 | /* This may happen for | |
10142 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
10143 | .toc directive | |
10144 | o bad linker script | |
10145 | o --gc-sections and empty TOC sections | |
10146 | ||
10147 | FIXME: Warn user? */ | |
10148 | ||
10149 | /* Look for a likely section. We probably won't even be | |
10150 | using TOCstart. */ | |
10151 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
10152 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
10153 | | SEC_EXCLUDE)) | |
805fc799 AM |
10154 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
10155 | break; | |
721956f4 | 10156 | if (s == NULL) |
805fc799 | 10157 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 10158 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
10159 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
10160 | break; | |
721956f4 | 10161 | if (s == NULL) |
805fc799 | 10162 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
10163 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
10164 | == SEC_ALLOC) | |
805fc799 | 10165 | break; |
721956f4 | 10166 | if (s == NULL) |
805fc799 | 10167 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 10168 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
10169 | break; |
10170 | } | |
721956f4 | 10171 | |
805fc799 AM |
10172 | TOCstart = 0; |
10173 | if (s != NULL) | |
10174 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 10175 | |
805fc799 | 10176 | return TOCstart; |
721956f4 AM |
10177 | } |
10178 | ||
10179 | /* Build all the stubs associated with the current output file. | |
10180 | The stubs are kept in a hash table attached to the main linker | |
10181 | hash table. This function is called via gldelf64ppc_finish. */ | |
10182 | ||
b34976b6 | 10183 | bfd_boolean |
4ce794b7 AM |
10184 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
10185 | struct bfd_link_info *info, | |
10186 | char **stats) | |
5d1634d7 AM |
10187 | { |
10188 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 10189 | asection *stub_sec; |
5d1634d7 | 10190 | bfd_byte *p; |
e717da7e | 10191 | int stub_sec_count = 0; |
5d1634d7 | 10192 | |
ad8e1ba5 | 10193 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
10194 | |
10195 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
10196 | for (stub_sec = htab->stub_bfd->sections; |
10197 | stub_sec != NULL; | |
10198 | stub_sec = stub_sec->next) | |
eea6121a AM |
10199 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
10200 | && stub_sec->size != 0) | |
e717da7e | 10201 | { |
eea6121a AM |
10202 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
10203 | if (stub_sec->contents == NULL) | |
10204 | return FALSE; | |
10205 | /* We want to check that built size is the same as calculated | |
10206 | size. rawsize is a convenient location to use. */ | |
10207 | stub_sec->rawsize = stub_sec->size; | |
10208 | stub_sec->size = 0; | |
e717da7e | 10209 | } |
5d1634d7 | 10210 | |
23eb7e01 | 10211 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 10212 | { |
9f951329 | 10213 | unsigned int indx; |
ad8e1ba5 | 10214 | bfd_vma plt0; |
9f951329 | 10215 | |
721956f4 | 10216 | /* Build the .glink plt call stub. */ |
97b639ba AM |
10217 | if (htab->emit_stub_syms) |
10218 | { | |
10219 | struct elf_link_hash_entry *h; | |
468392fb AM |
10220 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
10221 | TRUE, FALSE, FALSE); | |
97b639ba AM |
10222 | if (h == NULL) |
10223 | return FALSE; | |
10224 | if (h->root.type == bfd_link_hash_new) | |
10225 | { | |
10226 | h->root.type = bfd_link_hash_defined; | |
10227 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 10228 | h->root.u.def.value = 8; |
f5385ebf AM |
10229 | h->ref_regular = 1; |
10230 | h->def_regular = 1; | |
10231 | h->ref_regular_nonweak = 1; | |
10232 | h->forced_local = 1; | |
10233 | h->non_elf = 0; | |
97b639ba AM |
10234 | } |
10235 | } | |
176a0d42 AM |
10236 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
10237 | if (info->emitrelocations) | |
10238 | { | |
10239 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
10240 | if (r == NULL) | |
10241 | return FALSE; | |
10242 | r->r_offset = (htab->glink->output_offset | |
10243 | + htab->glink->output_section->vma); | |
10244 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
10245 | r->r_addend = plt0; | |
10246 | } | |
4ce794b7 | 10247 | p = htab->glink->contents; |
176a0d42 | 10248 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
10249 | bfd_put_64 (htab->glink->owner, plt0, p); |
10250 | p += 8; | |
10251 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 10252 | p += 4; |
ee4bf8d2 | 10253 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 10254 | p += 4; |
ee4bf8d2 | 10255 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 10256 | p += 4; |
ee4bf8d2 | 10257 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 10258 | p += 4; |
ee4bf8d2 | 10259 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 10260 | p += 4; |
ee4bf8d2 | 10261 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 10262 | p += 4; |
ee4bf8d2 | 10263 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 10264 | p += 4; |
4ce794b7 | 10265 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 10266 | p += 4; |
4ce794b7 | 10267 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 10268 | p += 4; |
4ce794b7 | 10269 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 10270 | p += 4; |
4ce794b7 | 10271 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 10272 | p += 4; |
ee4bf8d2 AM |
10273 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
10274 | { | |
10275 | bfd_put_32 (htab->glink->owner, NOP, p); | |
10276 | p += 4; | |
10277 | } | |
ad8e1ba5 | 10278 | |
9f951329 AM |
10279 | /* Build the .glink lazy link call stubs. */ |
10280 | indx = 0; | |
eea6121a | 10281 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
10282 | { |
10283 | if (indx < 0x8000) | |
10284 | { | |
4ce794b7 | 10285 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
10286 | p += 4; |
10287 | } | |
10288 | else | |
10289 | { | |
4ce794b7 | 10290 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 10291 | p += 4; |
4ce794b7 | 10292 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
10293 | p += 4; |
10294 | } | |
4ce794b7 | 10295 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 10296 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 10297 | indx++; |
9f951329 AM |
10298 | p += 4; |
10299 | } | |
eea6121a | 10300 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 10301 | } |
5d1634d7 | 10302 | |
eea6121a | 10303 | if (htab->brlt->size != 0) |
721956f4 | 10304 | { |
4ce794b7 | 10305 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 10306 | htab->brlt->size); |
4ce794b7 | 10307 | if (htab->brlt->contents == NULL) |
b34976b6 | 10308 | return FALSE; |
721956f4 | 10309 | } |
ee75fd95 | 10310 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
10311 | { |
10312 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 10313 | htab->relbrlt->size); |
63bc6f6c AM |
10314 | if (htab->relbrlt->contents == NULL) |
10315 | return FALSE; | |
10316 | } | |
5d1634d7 | 10317 | |
721956f4 AM |
10318 | /* Build the stubs as directed by the stub hash table. */ |
10319 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 10320 | |
aa8a7074 AM |
10321 | if (htab->relbrlt != NULL) |
10322 | htab->relbrlt->reloc_count = 0; | |
10323 | ||
721956f4 AM |
10324 | for (stub_sec = htab->stub_bfd->sections; |
10325 | stub_sec != NULL; | |
10326 | stub_sec = stub_sec->next) | |
e717da7e AM |
10327 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
10328 | { | |
10329 | stub_sec_count += 1; | |
eea6121a | 10330 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
10331 | break; |
10332 | } | |
5d1634d7 | 10333 | |
721956f4 | 10334 | if (stub_sec != NULL |
eea6121a | 10335 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 10336 | { |
b34976b6 | 10337 | htab->stub_error = TRUE; |
721956f4 | 10338 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 10339 | } |
721956f4 | 10340 | |
d2a300cf AM |
10341 | if (htab->stub_error) |
10342 | return FALSE; | |
10343 | ||
10344 | if (stats != NULL) | |
10345 | { | |
10346 | *stats = bfd_malloc (500); | |
10347 | if (*stats == NULL) | |
10348 | return FALSE; | |
10349 | ||
ee75fd95 | 10350 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
10351 | " branch %lu\n" |
10352 | " toc adjust %lu\n" | |
10353 | " long branch %lu\n" | |
10354 | " long toc adj %lu\n" | |
10355 | " plt call %lu"), | |
e717da7e | 10356 | stub_sec_count, |
ee75fd95 | 10357 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
10358 | htab->stub_count[ppc_stub_long_branch - 1], |
10359 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
10360 | htab->stub_count[ppc_stub_plt_branch - 1], | |
10361 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
10362 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
10363 | } |
10364 | return TRUE; | |
5bd4f169 AM |
10365 | } |
10366 | ||
99877b66 AM |
10367 | /* This function undoes the changes made by add_symbol_adjust. */ |
10368 | ||
10369 | static bfd_boolean | |
10370 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10371 | { | |
10372 | struct ppc_link_hash_entry *eh; | |
10373 | ||
10374 | if (h->root.type == bfd_link_hash_indirect) | |
10375 | return TRUE; | |
10376 | ||
10377 | if (h->root.type == bfd_link_hash_warning) | |
10378 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10379 | ||
10380 | eh = (struct ppc_link_hash_entry *) h; | |
10381 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
10382 | return TRUE; | |
10383 | ||
10384 | eh->elf.root.type = bfd_link_hash_undefined; | |
10385 | return TRUE; | |
10386 | } | |
10387 | ||
10388 | void | |
10389 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
10390 | { | |
10391 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10392 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
10393 | } | |
10394 | ||
60124e18 AM |
10395 | /* What to do when ld finds relocations against symbols defined in |
10396 | discarded sections. */ | |
10397 | ||
10398 | static unsigned int | |
10399 | ppc64_elf_action_discarded (asection *sec) | |
10400 | { | |
10401 | if (strcmp (".opd", sec->name) == 0) | |
10402 | return 0; | |
10403 | ||
10404 | if (strcmp (".toc", sec->name) == 0) | |
10405 | return 0; | |
10406 | ||
bce50a28 JJ |
10407 | if (strcmp (".toc1", sec->name) == 0) |
10408 | return 0; | |
10409 | ||
60124e18 AM |
10410 | return _bfd_elf_default_action_discarded (sec); |
10411 | } | |
10412 | ||
5bd4f169 AM |
10413 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
10414 | to handle the relocations for a section. | |
10415 | ||
10416 | The relocs are always passed as Rela structures; if the section | |
10417 | actually uses Rel structures, the r_addend field will always be | |
10418 | zero. | |
10419 | ||
10420 | This function is responsible for adjust the section contents as | |
10421 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 10422 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
10423 | necessary. |
10424 | ||
10425 | This function does not have to worry about setting the reloc | |
10426 | address or the reloc symbol index. | |
10427 | ||
10428 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
10429 | ||
10430 | LOCAL_SECTIONS is an array giving the section in the input file | |
10431 | corresponding to the st_shndx field of each local symbol. | |
10432 | ||
10433 | The global hash table entry for the global symbols can be found | |
10434 | via elf_sym_hashes (input_bfd). | |
10435 | ||
1049f94e | 10436 | When generating relocatable output, this function must handle |
5bd4f169 AM |
10437 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
10438 | going to be the section symbol corresponding to the output | |
10439 | section, which means that the addend must be adjusted | |
10440 | accordingly. */ | |
10441 | ||
b34976b6 | 10442 | static bfd_boolean |
4ce794b7 AM |
10443 | ppc64_elf_relocate_section (bfd *output_bfd, |
10444 | struct bfd_link_info *info, | |
10445 | bfd *input_bfd, | |
10446 | asection *input_section, | |
10447 | bfd_byte *contents, | |
10448 | Elf_Internal_Rela *relocs, | |
10449 | Elf_Internal_Sym *local_syms, | |
10450 | asection **local_sections) | |
5bd4f169 | 10451 | { |
65f38f15 | 10452 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
10453 | Elf_Internal_Shdr *symtab_hdr; |
10454 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
10455 | Elf_Internal_Rela *rel; |
10456 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
10457 | Elf_Internal_Rela outrel; |
10458 | bfd_byte *loc; | |
411e1bfb | 10459 | struct got_entry **local_got_ents; |
5bd4f169 | 10460 | bfd_vma TOCstart; |
b34976b6 AM |
10461 | bfd_boolean ret = TRUE; |
10462 | bfd_boolean is_opd; | |
96e0dda4 | 10463 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 10464 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 10465 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 10466 | |
65f38f15 | 10467 | /* Initialize howto table if needed. */ |
5bd4f169 | 10468 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
10469 | ppc_howto_init (); |
10470 | ||
65f38f15 | 10471 | htab = ppc_hash_table (info); |
ee75fd95 AM |
10472 | |
10473 | /* Don't relocate stub sections. */ | |
10474 | if (input_section->owner == htab->stub_bfd) | |
10475 | return TRUE; | |
10476 | ||
0c8d6e5c | 10477 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 10478 | |
411e1bfb | 10479 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 10480 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 10481 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 10482 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 10483 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 10484 | |
5bd4f169 AM |
10485 | rel = relocs; |
10486 | relend = relocs + input_section->reloc_count; | |
10487 | for (; rel < relend; rel++) | |
10488 | { | |
04c9666a | 10489 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 10490 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
10491 | bfd_reloc_status_type r; |
10492 | Elf_Internal_Sym *sym; | |
10493 | asection *sec; | |
039b3fef AM |
10494 | struct elf_link_hash_entry *h_elf; |
10495 | struct ppc_link_hash_entry *h; | |
10496 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 10497 | const char *sym_name; |
0d4792f7 | 10498 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 10499 | bfd_vma toc_addend; |
951fd09b | 10500 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 10501 | char sym_type; |
5bd4f169 | 10502 | bfd_vma relocation; |
b34976b6 AM |
10503 | bfd_boolean unresolved_reloc; |
10504 | bfd_boolean warned; | |
50bc7936 | 10505 | unsigned long insn, mask; |
721956f4 AM |
10506 | struct ppc_stub_hash_entry *stub_entry; |
10507 | bfd_vma max_br_offset; | |
10508 | bfd_vma from; | |
5bd4f169 | 10509 | |
4ce794b7 | 10510 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 10511 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
10512 | |
10513 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
10514 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
10515 | proper TOC base to use. */ | |
10516 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
10517 | && rel != relocs | |
10518 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
10519 | && is_opd) | |
10520 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
10521 | ||
4ce794b7 AM |
10522 | sym = NULL; |
10523 | sec = NULL; | |
039b3fef | 10524 | h_elf = NULL; |
4ce794b7 | 10525 | sym_name = NULL; |
b34976b6 AM |
10526 | unresolved_reloc = FALSE; |
10527 | warned = FALSE; | |
4cc603a5 | 10528 | orig_addend = rel->r_addend; |
65f38f15 | 10529 | |
0b13192e | 10530 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
10531 | { |
10532 | /* It's a local symbol. */ | |
74f0fb50 | 10533 | struct _opd_sec_data *opd; |
4025353c | 10534 | |
5bd4f169 AM |
10535 | sym = local_syms + r_symndx; |
10536 | sec = local_sections[r_symndx]; | |
26c61ae5 | 10537 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 10538 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 10539 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
10540 | opd = get_opd_info (sec); |
10541 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 10542 | { |
74f0fb50 | 10543 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
10544 | if (adjust == -1) |
10545 | relocation = 0; | |
10546 | else | |
4cc603a5 AM |
10547 | { |
10548 | /* If this is a relocation against the opd section sym | |
10549 | and we have edited .opd, adjust the reloc addend so | |
10550 | that ld -r and ld --emit-relocs output is correct. | |
10551 | If it is a reloc against some other .opd symbol, | |
10552 | then the symbol value will be adjusted later. */ | |
10553 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10554 | rel->r_addend += adjust; | |
10555 | else | |
10556 | relocation += adjust; | |
10557 | } | |
1e2f5b6e | 10558 | } |
5bd4f169 AM |
10559 | } |
10560 | else | |
10561 | { | |
b2a8e766 AM |
10562 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
10563 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 10564 | h_elf, sec, relocation, |
b2a8e766 | 10565 | unresolved_reloc, warned); |
039b3fef AM |
10566 | sym_name = h_elf->root.root.string; |
10567 | sym_type = h_elf->type; | |
5bd4f169 | 10568 | } |
039b3fef | 10569 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 10570 | |
ab96bf03 AM |
10571 | if (sec != NULL && elf_discarded_section (sec)) |
10572 | { | |
10573 | /* For relocs against symbols from removed linkonce sections, | |
10574 | or sections discarded by a linker script, we just want the | |
10575 | section contents zeroed. Avoid any special processing. */ | |
10576 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10577 | contents + rel->r_offset); | |
10578 | rel->r_info = 0; | |
10579 | rel->r_addend = 0; | |
10580 | continue; | |
10581 | } | |
10582 | ||
10583 | if (info->relocatable) | |
10584 | continue; | |
10585 | ||
951fd09b AM |
10586 | /* TLS optimizations. Replace instruction sequences and relocs |
10587 | based on information we collected in tls_optimize. We edit | |
10588 | RELOCS so that --emit-relocs will output something sensible | |
10589 | for the final instruction stream. */ | |
10590 | tls_mask = 0; | |
10591 | tls_gd = 0; | |
0d4792f7 | 10592 | toc_symndx = 0; |
727fc41e AM |
10593 | if (h != NULL) |
10594 | tls_mask = h->tls_mask; | |
10595 | else if (local_got_ents != NULL) | |
411e1bfb | 10596 | { |
e054468f AM |
10597 | struct plt_entry **local_plt = (struct plt_entry **) |
10598 | (local_got_ents + symtab_hdr->sh_info); | |
10599 | char *lgot_masks = (char *) | |
10600 | (local_plt + symtab_hdr->sh_info); | |
727fc41e AM |
10601 | tls_mask = lgot_masks[r_symndx]; |
10602 | } | |
10603 | if (tls_mask == 0 | |
10604 | && (r_type == R_PPC64_TLS | |
10605 | || r_type == R_PPC64_TLSGD | |
10606 | || r_type == R_PPC64_TLSLD)) | |
10607 | { | |
10608 | /* Check for toc tls entries. */ | |
10609 | char *toc_tls; | |
0d4792f7 | 10610 | |
727fc41e AM |
10611 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
10612 | &local_syms, rel, input_bfd)) | |
10613 | return FALSE; | |
0d4792f7 | 10614 | |
727fc41e AM |
10615 | if (toc_tls) |
10616 | tls_mask = *toc_tls; | |
0d4792f7 AM |
10617 | } |
10618 | ||
10619 | /* Check that tls relocs are used with tls syms, and non-tls | |
10620 | relocs are used with non-tls syms. */ | |
10621 | if (r_symndx != 0 | |
10622 | && r_type != R_PPC64_NONE | |
10623 | && (h == NULL | |
039b3fef AM |
10624 | || h->elf.root.type == bfd_link_hash_defined |
10625 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
10626 | && (IS_PPC64_TLS_RELOC (r_type) |
10627 | != (sym_type == STT_TLS | |
10628 | || (sym_type == STT_SECTION | |
10629 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 10630 | { |
727fc41e AM |
10631 | if (tls_mask != 0 |
10632 | && (r_type == R_PPC64_TLS | |
10633 | || r_type == R_PPC64_TLSGD | |
10634 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
10635 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
10636 | ; | |
10637 | else | |
10638 | (*_bfd_error_handler) | |
1d483afe | 10639 | (!IS_PPC64_TLS_RELOC (r_type) |
d003868e AM |
10640 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
10641 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
10642 | input_bfd, | |
10643 | input_section, | |
0d4792f7 AM |
10644 | (long) rel->r_offset, |
10645 | ppc64_elf_howto_table[r_type]->name, | |
10646 | sym_name); | |
411e1bfb AM |
10647 | } |
10648 | ||
10649 | /* Ensure reloc mapping code below stays sane. */ | |
10650 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
10651 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
10652 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
10653 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
10654 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
10655 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
10656 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
10657 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
10658 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
10659 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
10660 | abort (); | |
0d4792f7 | 10661 | |
411e1bfb AM |
10662 | switch (r_type) |
10663 | { | |
10664 | default: | |
411e1bfb AM |
10665 | break; |
10666 | ||
10667 | case R_PPC64_TOC16: | |
10668 | case R_PPC64_TOC16_LO: | |
10669 | case R_PPC64_TOC16_DS: | |
10670 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10671 | { |
10672 | /* Check for toc tls entries. */ | |
10673 | char *toc_tls; | |
951fd09b | 10674 | int retval; |
411e1bfb | 10675 | |
3a71aa26 AM |
10676 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
10677 | &local_syms, rel, input_bfd); | |
951fd09b | 10678 | if (retval == 0) |
411e1bfb AM |
10679 | return FALSE; |
10680 | ||
10681 | if (toc_tls) | |
10682 | { | |
951fd09b | 10683 | tls_mask = *toc_tls; |
411e1bfb AM |
10684 | if (r_type == R_PPC64_TOC16_DS |
10685 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10686 | { |
10687 | if (tls_mask != 0 | |
10688 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10689 | goto toctprel; | |
10690 | } | |
411e1bfb | 10691 | else |
951fd09b AM |
10692 | { |
10693 | /* If we found a GD reloc pair, then we might be | |
10694 | doing a GD->IE transition. */ | |
10695 | if (retval == 2) | |
10696 | { | |
10697 | tls_gd = TLS_TPRELGD; | |
10698 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10699 | goto tls_ldgd_opt; |
951fd09b AM |
10700 | } |
10701 | else if (retval == 3) | |
10702 | { | |
10703 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 10704 | goto tls_ldgd_opt; |
951fd09b AM |
10705 | } |
10706 | } | |
411e1bfb AM |
10707 | } |
10708 | } | |
10709 | break; | |
10710 | ||
10711 | case R_PPC64_GOT_TPREL16_DS: | |
10712 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10713 | if (tls_mask != 0 |
10714 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10715 | { |
81407a69 | 10716 | toctprel: |
4fe5ca5b | 10717 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10718 | insn &= 31 << 21; |
10719 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10720 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10721 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10722 | if (toc_symndx != 0) |
10723 | { | |
10724 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 10725 | rel->r_addend = toc_addend; |
0d4792f7 AM |
10726 | /* We changed the symbol. Start over in order to |
10727 | get h, sym, sec etc. right. */ | |
10728 | rel--; | |
10729 | continue; | |
10730 | } | |
10731 | else | |
10732 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10733 | } |
10734 | break; | |
10735 | ||
10736 | case R_PPC64_TLS: | |
951fd09b AM |
10737 | if (tls_mask != 0 |
10738 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10739 | { |
50bc7936 | 10740 | bfd_vma rtra; |
411e1bfb | 10741 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10742 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10743 | == ((31 << 26) | (13 << 11))) |
10744 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10745 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10746 | == ((31 << 26) | (13 << 16))) |
10747 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10748 | else | |
10749 | abort (); | |
10750 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10751 | /* add -> addi. */ | |
10752 | insn = 14 << 26; | |
10753 | else if ((insn & (31 << 1)) == 23 << 1 | |
10754 | && ((insn & (31 << 6)) < 14 << 6 | |
10755 | || ((insn & (31 << 6)) >= 16 << 6 | |
10756 | && (insn & (31 << 6)) < 24 << 6))) | |
10757 | /* load and store indexed -> dform. */ | |
10758 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10759 | else if ((insn & (31 << 1)) == 21 << 1 | |
10760 | && (insn & (0x1a << 6)) == 0) | |
10761 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10762 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10763 | | ((insn >> 6) & 1)); | |
10764 | else if ((insn & (31 << 1)) == 21 << 1 | |
10765 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10766 | /* lwax -> lwa. */ | |
10767 | insn = (58 << 26) | 2; | |
10768 | else | |
10769 | abort (); | |
10770 | insn |= rtra; | |
10771 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10772 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10773 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10774 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10775 | r_type = R_PPC64_TPREL16_LO; |
10776 | if (toc_symndx != 0) | |
10777 | { | |
10778 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 10779 | rel->r_addend = toc_addend; |
0d4792f7 AM |
10780 | /* We changed the symbol. Start over in order to |
10781 | get h, sym, sec etc. right. */ | |
10782 | rel--; | |
10783 | continue; | |
10784 | } | |
10785 | else | |
10786 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10787 | } |
10788 | break; | |
10789 | ||
411e1bfb AM |
10790 | case R_PPC64_GOT_TLSGD16_HI: |
10791 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10792 | tls_gd = TLS_TPRELGD; |
10793 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10794 | goto tls_gdld_hi; | |
10795 | break; | |
10796 | ||
411e1bfb AM |
10797 | case R_PPC64_GOT_TLSLD16_HI: |
10798 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10799 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10800 | { |
951fd09b AM |
10801 | tls_gdld_hi: |
10802 | if ((tls_mask & tls_gd) != 0) | |
10803 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10804 | + R_PPC64_GOT_TPREL16_DS); | |
10805 | else | |
411e1bfb | 10806 | { |
951fd09b | 10807 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10808 | rel->r_offset -= d_offset; |
951fd09b | 10809 | r_type = R_PPC64_NONE; |
411e1bfb | 10810 | } |
951fd09b | 10811 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10812 | } |
10813 | break; | |
10814 | ||
951fd09b AM |
10815 | case R_PPC64_GOT_TLSGD16: |
10816 | case R_PPC64_GOT_TLSGD16_LO: | |
10817 | tls_gd = TLS_TPRELGD; | |
10818 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10819 | goto tls_ldgd_opt; |
951fd09b | 10820 | break; |
411e1bfb | 10821 | |
951fd09b AM |
10822 | case R_PPC64_GOT_TLSLD16: |
10823 | case R_PPC64_GOT_TLSLD16_LO: | |
10824 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10825 | { | |
3a71aa26 | 10826 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
10827 | bfd_vma offset; |
10828 | ||
10829 | tls_ldgd_opt: | |
727fc41e AM |
10830 | offset = (bfd_vma) -1; |
10831 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
10832 | __tls_get_addr calls, we must trust that the call | |
10833 | stays with its arg setup insns, ie. that the next | |
10834 | reloc is the __tls_get_addr call associated with | |
10835 | the current reloc. Edit both insns. */ | |
10836 | if (input_section->has_tls_get_addr_call | |
10837 | && rel + 1 < relend | |
10838 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
10839 | htab->tls_get_addr, | |
10840 | htab->tls_get_addr_fd)) | |
10841 | offset = rel[1].r_offset; | |
102890f0 | 10842 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 10843 | { |
102890f0 | 10844 | /* IE */ |
3a71aa26 AM |
10845 | insn1 = bfd_get_32 (output_bfd, |
10846 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
10847 | insn1 &= (1 << 26) - (1 << 2); |
10848 | insn1 |= 58 << 26; /* ld */ | |
10849 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e AM |
10850 | if (offset != (bfd_vma) -1) |
10851 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10852 | R_PPC64_NONE); | |
102890f0 AM |
10853 | if ((tls_mask & TLS_EXPLICIT) == 0) |
10854 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10855 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 10856 | else |
102890f0 AM |
10857 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
10858 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10859 | } | |
10860 | else | |
10861 | { | |
10862 | /* LE */ | |
10863 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10864 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10865 | if (tls_gd == 0) | |
951fd09b | 10866 | { |
102890f0 | 10867 | /* Was an LD reloc. */ |
1d483afe AM |
10868 | if (toc_symndx) |
10869 | sec = local_sections[toc_symndx]; | |
10870 | for (r_symndx = 0; | |
10871 | r_symndx < symtab_hdr->sh_info; | |
10872 | r_symndx++) | |
10873 | if (local_sections[r_symndx] == sec) | |
10874 | break; | |
10875 | if (r_symndx >= symtab_hdr->sh_info) | |
10876 | r_symndx = 0; | |
102890f0 | 10877 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
1d483afe AM |
10878 | if (r_symndx != 0) |
10879 | rel->r_addend -= (local_syms[r_symndx].st_value | |
10880 | + sec->output_offset | |
10881 | + sec->output_section->vma); | |
951fd09b | 10882 | } |
102890f0 | 10883 | else if (toc_symndx != 0) |
3a71aa26 AM |
10884 | { |
10885 | r_symndx = toc_symndx; | |
10886 | rel->r_addend = toc_addend; | |
10887 | } | |
102890f0 AM |
10888 | r_type = R_PPC64_TPREL16_HA; |
10889 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
10890 | if (offset != (bfd_vma) -1) |
10891 | { | |
10892 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10893 | R_PPC64_TPREL16_LO); | |
10894 | rel[1].r_offset = offset + d_offset; | |
10895 | rel[1].r_addend = rel->r_addend; | |
10896 | } | |
102890f0 | 10897 | } |
3a71aa26 AM |
10898 | bfd_put_32 (output_bfd, insn1, |
10899 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
10900 | if (offset != (bfd_vma) -1) |
10901 | { | |
10902 | insn3 = bfd_get_32 (output_bfd, | |
10903 | contents + offset + 4); | |
10904 | if (insn3 == NOP | |
10905 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10906 | { | |
10907 | rel[1].r_offset += 4; | |
10908 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
10909 | insn2 = NOP; | |
10910 | } | |
10911 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10912 | } | |
10913 | if ((tls_mask & tls_gd) == 0 | |
10914 | && (tls_gd == 0 || toc_symndx != 0)) | |
10915 | { | |
10916 | /* We changed the symbol. Start over in order | |
10917 | to get h, sym, sec etc. right. */ | |
10918 | rel--; | |
10919 | continue; | |
10920 | } | |
10921 | } | |
10922 | break; | |
10923 | ||
10924 | case R_PPC64_TLSGD: | |
10925 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10926 | { | |
10927 | unsigned int insn2, insn3; | |
10928 | bfd_vma offset = rel->r_offset; | |
10929 | ||
10930 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10931 | { | |
10932 | /* IE */ | |
10933 | r_type = R_PPC64_NONE; | |
10934 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10935 | } | |
10936 | else | |
10937 | { | |
10938 | /* LE */ | |
10939 | if (toc_symndx != 0) | |
10940 | { | |
10941 | r_symndx = toc_symndx; | |
10942 | rel->r_addend = toc_addend; | |
10943 | } | |
10944 | r_type = R_PPC64_TPREL16_LO; | |
10945 | rel->r_offset = offset + d_offset; | |
10946 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10947 | } | |
10948 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10949 | /* Zap the reloc on the _tls_get_addr call too. */ | |
10950 | BFD_ASSERT (offset == rel[1].r_offset); | |
10951 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10952 | R_PPC64_NONE); | |
3a71aa26 AM |
10953 | insn3 = bfd_get_32 (output_bfd, |
10954 | contents + offset + 4); | |
102890f0 AM |
10955 | if (insn3 == NOP |
10956 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10957 | { | |
727fc41e | 10958 | rel->r_offset += 4; |
3a71aa26 AM |
10959 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
10960 | insn2 = NOP; | |
102890f0 | 10961 | } |
102890f0 | 10962 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 10963 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 10964 | { |
102890f0 AM |
10965 | rel--; |
10966 | continue; | |
411e1bfb | 10967 | } |
411e1bfb | 10968 | } |
411e1bfb AM |
10969 | break; |
10970 | ||
727fc41e AM |
10971 | case R_PPC64_TLSLD: |
10972 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10973 | { | |
10974 | unsigned int insn2, insn3; | |
10975 | bfd_vma offset = rel->r_offset; | |
10976 | ||
10977 | if (toc_symndx) | |
10978 | sec = local_sections[toc_symndx]; | |
10979 | for (r_symndx = 0; | |
10980 | r_symndx < symtab_hdr->sh_info; | |
10981 | r_symndx++) | |
10982 | if (local_sections[r_symndx] == sec) | |
10983 | break; | |
10984 | if (r_symndx >= symtab_hdr->sh_info) | |
10985 | r_symndx = 0; | |
10986 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
10987 | if (r_symndx != 0) | |
10988 | rel->r_addend -= (local_syms[r_symndx].st_value | |
10989 | + sec->output_offset | |
10990 | + sec->output_section->vma); | |
10991 | ||
10992 | r_type = R_PPC64_TPREL16_LO; | |
10993 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10994 | rel->r_offset = offset + d_offset; | |
10995 | /* Zap the reloc on the _tls_get_addr call too. */ | |
10996 | BFD_ASSERT (offset == rel[1].r_offset); | |
10997 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10998 | R_PPC64_NONE); | |
10999 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
11000 | insn3 = bfd_get_32 (output_bfd, | |
11001 | contents + offset + 4); | |
11002 | if (insn3 == NOP | |
11003 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11004 | { | |
11005 | rel->r_offset += 4; | |
11006 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
11007 | insn2 = NOP; | |
11008 | } | |
11009 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
11010 | rel--; | |
11011 | continue; | |
11012 | } | |
11013 | break; | |
11014 | ||
411e1bfb | 11015 | case R_PPC64_DTPMOD64: |
951fd09b AM |
11016 | if (rel + 1 < relend |
11017 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
11018 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 11019 | { |
951fd09b AM |
11020 | if ((tls_mask & TLS_GD) == 0) |
11021 | { | |
11022 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
11023 | if ((tls_mask & TLS_TPRELGD) != 0) | |
11024 | r_type = R_PPC64_TPREL64; | |
11025 | else | |
11026 | { | |
4ce794b7 | 11027 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
11028 | r_type = R_PPC64_NONE; |
11029 | } | |
11030 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11031 | } | |
11032 | } | |
11033 | else | |
11034 | { | |
11035 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 11036 | { |
4ce794b7 | 11037 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 11038 | r_type = R_PPC64_NONE; |
951fd09b | 11039 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 11040 | } |
411e1bfb AM |
11041 | } |
11042 | break; | |
11043 | ||
11044 | case R_PPC64_TPREL64: | |
951fd09b | 11045 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
11046 | { |
11047 | r_type = R_PPC64_NONE; | |
11048 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11049 | } | |
11050 | break; | |
11051 | } | |
11052 | ||
11053 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 11054 | insn = 0; |
b25116a9 AM |
11055 | max_br_offset = 1 << 25; |
11056 | addend = rel->r_addend; | |
65f38f15 | 11057 | switch (r_type) |
5bd4f169 AM |
11058 | { |
11059 | default: | |
65f38f15 | 11060 | break; |
5bd4f169 | 11061 | |
65f38f15 AM |
11062 | /* Branch taken prediction relocations. */ |
11063 | case R_PPC64_ADDR14_BRTAKEN: | |
11064 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
11065 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
11066 | /* Fall thru. */ | |
65f38f15 | 11067 | |
86c76c7b | 11068 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
11069 | case R_PPC64_ADDR14_BRNTAKEN: |
11070 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
11071 | insn |= bfd_get_32 (output_bfd, |
11072 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 11073 | /* Fall thru. */ |
86c76c7b | 11074 | |
b25116a9 AM |
11075 | case R_PPC64_REL14: |
11076 | max_br_offset = 1 << 15; | |
11077 | /* Fall thru. */ | |
5bd4f169 | 11078 | |
65f38f15 | 11079 | case R_PPC64_REL24: |
ad8e1ba5 AM |
11080 | /* Calls to functions with a different TOC, such as calls to |
11081 | shared objects, need to alter the TOC pointer. This is | |
11082 | done using a linkage stub. A REL24 branching to these | |
11083 | linkage stubs needs to be followed by a nop, as the nop | |
11084 | will be replaced with an instruction to restore the TOC | |
11085 | base pointer. */ | |
b25116a9 | 11086 | stub_entry = NULL; |
8387904d | 11087 | fdh = h; |
ad8e1ba5 | 11088 | if (((h != NULL |
039b3fef AM |
11089 | && (((fdh = h->oh) != NULL |
11090 | && fdh->elf.plt.plist != NULL) | |
11091 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 11092 | || (sec != NULL |
ad8e1ba5 | 11093 | && sec->output_section != NULL |
b25116a9 | 11094 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
11095 | && (htab->stub_group[sec->id].toc_off |
11096 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 11097 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
11098 | rel, htab)) != NULL |
11099 | && (stub_entry->stub_type == ppc_stub_plt_call | |
11100 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
11101 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 11102 | { |
b25116a9 | 11103 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 11104 | |
eea6121a | 11105 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 11106 | { |
b25116a9 AM |
11107 | unsigned long nop; |
11108 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
11109 | if (nop == NOP | |
11110 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 11111 | { |
4ce794b7 | 11112 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 11113 | contents + rel->r_offset + 4); |
b25116a9 | 11114 | can_plt_call = TRUE; |
41bd81ab | 11115 | } |
5bd4f169 | 11116 | } |
721956f4 AM |
11117 | |
11118 | if (!can_plt_call) | |
11119 | { | |
ad8e1ba5 AM |
11120 | if (stub_entry->stub_type == ppc_stub_plt_call) |
11121 | { | |
11122 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
11123 | and link, don't require a nop. However, don't |
11124 | allow tail calls in a shared library as they | |
11125 | will result in r2 being corrupted. */ | |
b25116a9 AM |
11126 | unsigned long br; |
11127 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 11128 | if (info->executable && (br & 1) == 0) |
b25116a9 | 11129 | can_plt_call = TRUE; |
15b552e9 AM |
11130 | else |
11131 | stub_entry = NULL; | |
ad8e1ba5 | 11132 | } |
6ab189d5 | 11133 | else if (h != NULL |
039b3fef | 11134 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
11135 | ".__libc_start_main") == 0) |
11136 | { | |
11137 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 11138 | can_plt_call = TRUE; |
6ab189d5 | 11139 | } |
ad8e1ba5 AM |
11140 | else |
11141 | { | |
11142 | if (strcmp (input_section->output_section->name, | |
11143 | ".init") == 0 | |
11144 | || strcmp (input_section->output_section->name, | |
11145 | ".fini") == 0) | |
11146 | (*_bfd_error_handler) | |
d003868e | 11147 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
11148 | "not supported using your crt files; " |
11149 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
11150 | input_bfd, |
11151 | input_section, | |
ad8e1ba5 AM |
11152 | (long) rel->r_offset); |
11153 | else | |
11154 | (*_bfd_error_handler) | |
d003868e | 11155 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
11156 | "does not allow automatic multiple TOCs; " |
11157 | "recompile with -mminimal-toc or " | |
11158 | "-fno-optimize-sibling-calls, " | |
11159 | "or make `%s' extern"), | |
d003868e AM |
11160 | input_bfd, |
11161 | input_section, | |
ad8e1ba5 AM |
11162 | (long) rel->r_offset, |
11163 | sym_name, | |
11164 | sym_name); | |
11165 | bfd_set_error (bfd_error_bad_value); | |
11166 | ret = FALSE; | |
11167 | } | |
721956f4 AM |
11168 | } |
11169 | ||
b25116a9 AM |
11170 | if (can_plt_call |
11171 | && stub_entry->stub_type == ppc_stub_plt_call) | |
11172 | unresolved_reloc = FALSE; | |
11173 | } | |
11174 | ||
8387904d AM |
11175 | if (stub_entry == NULL |
11176 | && get_opd_info (sec) != NULL) | |
11177 | { | |
11178 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
11179 | bfd_vma off = (relocation + addend |
11180 | - sec->output_section->vma | |
11181 | - sec->output_offset); | |
8387904d AM |
11182 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
11183 | if (dest != (bfd_vma) -1) | |
11184 | { | |
11185 | relocation = dest; | |
11186 | addend = 0; | |
11187 | } | |
11188 | } | |
11189 | ||
b25116a9 AM |
11190 | /* If the branch is out of reach we ought to have a long |
11191 | branch stub. */ | |
11192 | from = (rel->r_offset | |
11193 | + input_section->output_offset | |
11194 | + input_section->output_section->vma); | |
11195 | ||
11196 | if (stub_entry == NULL | |
4cc603a5 | 11197 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
11198 | >= 2 * max_br_offset) |
11199 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
11200 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
11201 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
11202 | htab); | |
b25116a9 AM |
11203 | |
11204 | if (stub_entry != NULL) | |
11205 | { | |
11206 | /* Munge up the value and addend so that we call the stub | |
11207 | rather than the procedure directly. */ | |
11208 | relocation = (stub_entry->stub_offset | |
11209 | + stub_entry->stub_sec->output_offset | |
11210 | + stub_entry->stub_sec->output_section->vma); | |
11211 | addend = 0; | |
11212 | } | |
11213 | ||
11214 | if (insn != 0) | |
11215 | { | |
11216 | if (is_power4) | |
721956f4 | 11217 | { |
b25116a9 AM |
11218 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
11219 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
11220 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
11221 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
11222 | insn |= 0x02 << 21; | |
11223 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
11224 | insn |= 0x08 << 21; | |
11225 | else | |
11226 | break; | |
11227 | } | |
11228 | else | |
11229 | { | |
11230 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 11231 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 11232 | insn ^= 0x01 << 21; |
721956f4 | 11233 | } |
b25116a9 AM |
11234 | |
11235 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 11236 | } |
e86ce104 | 11237 | |
06da1e8e AM |
11238 | /* NOP out calls to undefined weak functions. |
11239 | We can thus call a weak function without first | |
11240 | checking whether the function is defined. */ | |
b25116a9 | 11241 | else if (h != NULL |
039b3fef | 11242 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
11243 | && r_type == R_PPC64_REL24 |
11244 | && relocation == 0 | |
4cc603a5 | 11245 | && addend == 0) |
e86ce104 | 11246 | { |
06da1e8e AM |
11247 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
11248 | continue; | |
e86ce104 | 11249 | } |
65f38f15 AM |
11250 | break; |
11251 | } | |
5bd4f169 | 11252 | |
65f38f15 | 11253 | /* Set `addend'. */ |
411e1bfb | 11254 | tls_type = 0; |
65f38f15 AM |
11255 | switch (r_type) |
11256 | { | |
11257 | default: | |
11258 | (*_bfd_error_handler) | |
d003868e AM |
11259 | (_("%B: unknown relocation type %d for symbol %s"), |
11260 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 11261 | |
65f38f15 | 11262 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11263 | ret = FALSE; |
65f38f15 | 11264 | continue; |
5bd4f169 | 11265 | |
65f38f15 | 11266 | case R_PPC64_NONE: |
411e1bfb | 11267 | case R_PPC64_TLS: |
727fc41e AM |
11268 | case R_PPC64_TLSGD: |
11269 | case R_PPC64_TLSLD: | |
04c9666a AM |
11270 | case R_PPC64_GNU_VTINHERIT: |
11271 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 11272 | continue; |
5bd4f169 AM |
11273 | |
11274 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
11275 | address in the GOT as relocation value instead of the | |
411e1bfb | 11276 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 11277 | symbol and put the symbol value there. */ |
411e1bfb AM |
11278 | case R_PPC64_GOT_TLSGD16: |
11279 | case R_PPC64_GOT_TLSGD16_LO: | |
11280 | case R_PPC64_GOT_TLSGD16_HI: | |
11281 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 11282 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
11283 | goto dogot; |
11284 | ||
11285 | case R_PPC64_GOT_TLSLD16: | |
11286 | case R_PPC64_GOT_TLSLD16_LO: | |
11287 | case R_PPC64_GOT_TLSLD16_HI: | |
11288 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 11289 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
11290 | goto dogot; |
11291 | ||
11292 | case R_PPC64_GOT_TPREL16_DS: | |
11293 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11294 | case R_PPC64_GOT_TPREL16_HI: | |
11295 | case R_PPC64_GOT_TPREL16_HA: | |
11296 | tls_type = TLS_TLS | TLS_TPREL; | |
11297 | goto dogot; | |
11298 | ||
11299 | case R_PPC64_GOT_DTPREL16_DS: | |
11300 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11301 | case R_PPC64_GOT_DTPREL16_HI: | |
11302 | case R_PPC64_GOT_DTPREL16_HA: | |
11303 | tls_type = TLS_TLS | TLS_DTPREL; | |
11304 | goto dogot; | |
11305 | ||
65f38f15 AM |
11306 | case R_PPC64_GOT16: |
11307 | case R_PPC64_GOT16_LO: | |
11308 | case R_PPC64_GOT16_HI: | |
11309 | case R_PPC64_GOT16_HA: | |
11310 | case R_PPC64_GOT16_DS: | |
11311 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 11312 | dogot: |
5bd4f169 AM |
11313 | { |
11314 | /* Relocation is to the entry for this symbol in the global | |
11315 | offset table. */ | |
e717da7e | 11316 | asection *got; |
d881513a | 11317 | bfd_vma *offp; |
5bd4f169 | 11318 | bfd_vma off; |
d881513a | 11319 | unsigned long indx = 0; |
65f38f15 | 11320 | |
d881513a AM |
11321 | if (tls_type == (TLS_TLS | TLS_LD) |
11322 | && (h == NULL | |
f5385ebf | 11323 | || !h->elf.def_dynamic)) |
e717da7e | 11324 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 11325 | else |
5bd4f169 | 11326 | { |
d881513a | 11327 | struct got_entry *ent; |
5bd4f169 | 11328 | |
d881513a AM |
11329 | if (h != NULL) |
11330 | { | |
11331 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
11332 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
11333 | &h->elf) | |
d881513a | 11334 | || (info->shared |
039b3fef | 11335 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
11336 | /* This is actually a static link, or it is a |
11337 | -Bsymbolic link and the symbol is defined | |
11338 | locally, or the symbol was forced to be local | |
11339 | because of a version file. */ | |
11340 | ; | |
11341 | else | |
11342 | { | |
039b3fef | 11343 | indx = h->elf.dynindx; |
d881513a AM |
11344 | unresolved_reloc = FALSE; |
11345 | } | |
039b3fef | 11346 | ent = h->elf.got.glist; |
d881513a | 11347 | } |
411e1bfb | 11348 | else |
5bd4f169 | 11349 | { |
d881513a AM |
11350 | if (local_got_ents == NULL) |
11351 | abort (); | |
11352 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 11353 | } |
d881513a AM |
11354 | |
11355 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 11356 | if (ent->addend == orig_addend |
e717da7e | 11357 | && ent->owner == input_bfd |
d881513a AM |
11358 | && ent->tls_type == tls_type) |
11359 | break; | |
11360 | if (ent == NULL) | |
11361 | abort (); | |
11362 | offp = &ent->got.offset; | |
5bd4f169 | 11363 | } |
411e1bfb | 11364 | |
e717da7e AM |
11365 | got = ppc64_elf_tdata (input_bfd)->got; |
11366 | if (got == NULL) | |
11367 | abort (); | |
11368 | ||
411e1bfb AM |
11369 | /* The offset must always be a multiple of 8. We use the |
11370 | least significant bit to record whether we have already | |
11371 | processed this entry. */ | |
d881513a | 11372 | off = *offp; |
411e1bfb AM |
11373 | if ((off & 1) != 0) |
11374 | off &= ~1; | |
5bd4f169 AM |
11375 | else |
11376 | { | |
411e1bfb AM |
11377 | /* Generate relocs for the dynamic linker, except in |
11378 | the case of TLSLD where we'll use one entry per | |
11379 | module. */ | |
e717da7e AM |
11380 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
11381 | ||
d881513a | 11382 | *offp = off | 1; |
4e795f50 | 11383 | if ((info->shared || indx != 0) |
3a71aa26 AM |
11384 | && (offp == &ppc64_tlsld_got (input_bfd)->offset |
11385 | || h == NULL | |
039b3fef AM |
11386 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11387 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 11388 | { |
e717da7e AM |
11389 | outrel.r_offset = (got->output_section->vma |
11390 | + got->output_offset | |
411e1bfb | 11391 | + off); |
4cc603a5 | 11392 | outrel.r_addend = addend; |
d881513a | 11393 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 11394 | { |
411e1bfb | 11395 | outrel.r_addend = 0; |
e515b051 | 11396 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
11397 | if (tls_type == (TLS_TLS | TLS_GD)) |
11398 | { | |
e717da7e AM |
11399 | loc = relgot->contents; |
11400 | loc += (relgot->reloc_count++ | |
d881513a AM |
11401 | * sizeof (Elf64_External_Rela)); |
11402 | bfd_elf64_swap_reloca_out (output_bfd, | |
11403 | &outrel, loc); | |
e515b051 | 11404 | outrel.r_offset += 8; |
4cc603a5 | 11405 | outrel.r_addend = addend; |
d881513a AM |
11406 | outrel.r_info |
11407 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 11408 | } |
411e1bfb | 11409 | } |
951fd09b | 11410 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 11411 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 11412 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
11413 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
11414 | else if (indx == 0) | |
81407a69 AM |
11415 | { |
11416 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
11417 | ||
11418 | /* Write the .got section contents for the sake | |
11419 | of prelink. */ | |
e717da7e | 11420 | loc = got->contents + off; |
23fbd6fa JJ |
11421 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
11422 | loc); | |
81407a69 | 11423 | } |
411e1bfb AM |
11424 | else |
11425 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
11426 | |
11427 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
11428 | { |
11429 | outrel.r_addend += relocation; | |
11430 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 11431 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 11432 | } |
e717da7e AM |
11433 | loc = relgot->contents; |
11434 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
11435 | * sizeof (Elf64_External_Rela)); |
11436 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
11437 | } | |
11438 | ||
ad8e1ba5 | 11439 | /* Init the .got section contents here if we're not |
81407a69 | 11440 | emitting a reloc. */ |
d881513a | 11441 | else |
411e1bfb | 11442 | { |
4cc603a5 | 11443 | relocation += addend; |
7b609f53 AM |
11444 | if (tls_type == (TLS_TLS | TLS_LD)) |
11445 | relocation = 1; | |
11446 | else if (tls_type != 0) | |
411e1bfb | 11447 | { |
e1918d23 | 11448 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 11449 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 11450 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 11451 | |
7b609f53 AM |
11452 | if (tls_type == (TLS_TLS | TLS_GD)) |
11453 | { | |
11454 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 11455 | got->contents + off + 8); |
7b609f53 AM |
11456 | relocation = 1; |
11457 | } | |
411e1bfb | 11458 | } |
7b609f53 | 11459 | |
411e1bfb | 11460 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 11461 | got->contents + off); |
5bd4f169 AM |
11462 | } |
11463 | } | |
11464 | ||
65f38f15 AM |
11465 | if (off >= (bfd_vma) -2) |
11466 | abort (); | |
11467 | ||
e717da7e | 11468 | relocation = got->output_offset + off; |
65f38f15 | 11469 | |
5bd4f169 | 11470 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 11471 | addend = -TOC_BASE_OFF; |
5bd4f169 | 11472 | } |
65f38f15 AM |
11473 | break; |
11474 | ||
11475 | case R_PPC64_PLT16_HA: | |
11476 | case R_PPC64_PLT16_HI: | |
11477 | case R_PPC64_PLT16_LO: | |
11478 | case R_PPC64_PLT32: | |
11479 | case R_PPC64_PLT64: | |
11480 | /* Relocation is to the entry for this symbol in the | |
11481 | procedure linkage table. */ | |
11482 | ||
11483 | /* Resolve a PLT reloc against a local symbol directly, | |
11484 | without using the procedure linkage table. */ | |
11485 | if (h == NULL) | |
11486 | break; | |
11487 | ||
411e1bfb AM |
11488 | /* It's possible that we didn't make a PLT entry for this |
11489 | symbol. This happens when statically linking PIC code, | |
11490 | or when using -Bsymbolic. Go find a match if there is a | |
11491 | PLT entry. */ | |
4ce794b7 | 11492 | if (htab->plt != NULL) |
65f38f15 | 11493 | { |
411e1bfb | 11494 | struct plt_entry *ent; |
039b3fef | 11495 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 11496 | if (ent->addend == orig_addend |
411e1bfb AM |
11497 | && ent->plt.offset != (bfd_vma) -1) |
11498 | { | |
4ce794b7 AM |
11499 | relocation = (htab->plt->output_section->vma |
11500 | + htab->plt->output_offset | |
411e1bfb AM |
11501 | + ent->plt.offset); |
11502 | unresolved_reloc = FALSE; | |
11503 | } | |
65f38f15 | 11504 | } |
65f38f15 | 11505 | break; |
5bd4f169 | 11506 | |
0b13192e AM |
11507 | case R_PPC64_TOC: |
11508 | /* Relocation value is TOC base. */ | |
11509 | relocation = TOCstart; | |
11510 | if (r_symndx == 0) | |
11511 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
11512 | else if (unresolved_reloc) |
11513 | ; | |
11514 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
11515 | relocation += htab->stub_group[sec->id].toc_off; |
11516 | else | |
11517 | unresolved_reloc = TRUE; | |
ab96bf03 | 11518 | goto dodyn; |
0b13192e | 11519 | |
5bd4f169 AM |
11520 | /* TOC16 relocs. We want the offset relative to the TOC base, |
11521 | which is the address of the start of the TOC plus 0x8000. | |
11522 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
11523 | in this order. */ | |
65f38f15 AM |
11524 | case R_PPC64_TOC16: |
11525 | case R_PPC64_TOC16_LO: | |
11526 | case R_PPC64_TOC16_HI: | |
11527 | case R_PPC64_TOC16_DS: | |
11528 | case R_PPC64_TOC16_LO_DS: | |
11529 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 11530 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
11531 | break; |
11532 | ||
11533 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
11534 | case R_PPC64_SECTOFF: |
11535 | case R_PPC64_SECTOFF_LO: | |
11536 | case R_PPC64_SECTOFF_HI: | |
11537 | case R_PPC64_SECTOFF_DS: | |
11538 | case R_PPC64_SECTOFF_LO_DS: | |
11539 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 11540 | if (sec != NULL) |
65f38f15 | 11541 | addend -= sec->output_section->vma; |
5bd4f169 AM |
11542 | break; |
11543 | ||
721956f4 AM |
11544 | case R_PPC64_REL14: |
11545 | case R_PPC64_REL14_BRNTAKEN: | |
11546 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
11547 | case R_PPC64_REL24: |
11548 | break; | |
11549 | ||
411e1bfb AM |
11550 | case R_PPC64_TPREL16: |
11551 | case R_PPC64_TPREL16_LO: | |
11552 | case R_PPC64_TPREL16_HI: | |
11553 | case R_PPC64_TPREL16_HA: | |
11554 | case R_PPC64_TPREL16_DS: | |
11555 | case R_PPC64_TPREL16_LO_DS: | |
11556 | case R_PPC64_TPREL16_HIGHER: | |
11557 | case R_PPC64_TPREL16_HIGHERA: | |
11558 | case R_PPC64_TPREL16_HIGHEST: | |
11559 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 11560 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11561 | if (info->shared) |
11562 | /* The TPREL16 relocs shouldn't really be used in shared | |
11563 | libs as they will result in DT_TEXTREL being set, but | |
11564 | support them anyway. */ | |
11565 | goto dodyn; | |
11566 | break; | |
11567 | ||
11568 | case R_PPC64_DTPREL16: | |
11569 | case R_PPC64_DTPREL16_LO: | |
11570 | case R_PPC64_DTPREL16_HI: | |
11571 | case R_PPC64_DTPREL16_HA: | |
11572 | case R_PPC64_DTPREL16_DS: | |
11573 | case R_PPC64_DTPREL16_LO_DS: | |
11574 | case R_PPC64_DTPREL16_HIGHER: | |
11575 | case R_PPC64_DTPREL16_HIGHERA: | |
11576 | case R_PPC64_DTPREL16_HIGHEST: | |
11577 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 11578 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11579 | break; |
11580 | ||
e515b051 AM |
11581 | case R_PPC64_DTPMOD64: |
11582 | relocation = 1; | |
11583 | addend = 0; | |
11584 | goto dodyn; | |
11585 | ||
411e1bfb | 11586 | case R_PPC64_TPREL64: |
e1918d23 | 11587 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11588 | goto dodyn; |
11589 | ||
11590 | case R_PPC64_DTPREL64: | |
e1918d23 | 11591 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11592 | /* Fall thru */ |
11593 | ||
65f38f15 AM |
11594 | /* Relocations that may need to be propagated if this is a |
11595 | dynamic object. */ | |
04c9666a | 11596 | case R_PPC64_REL30: |
65f38f15 AM |
11597 | case R_PPC64_REL32: |
11598 | case R_PPC64_REL64: | |
11599 | case R_PPC64_ADDR14: | |
11600 | case R_PPC64_ADDR14_BRNTAKEN: | |
11601 | case R_PPC64_ADDR14_BRTAKEN: | |
11602 | case R_PPC64_ADDR16: | |
11603 | case R_PPC64_ADDR16_DS: | |
11604 | case R_PPC64_ADDR16_HA: | |
11605 | case R_PPC64_ADDR16_HI: | |
11606 | case R_PPC64_ADDR16_HIGHER: | |
11607 | case R_PPC64_ADDR16_HIGHERA: | |
11608 | case R_PPC64_ADDR16_HIGHEST: | |
11609 | case R_PPC64_ADDR16_HIGHESTA: | |
11610 | case R_PPC64_ADDR16_LO: | |
11611 | case R_PPC64_ADDR16_LO_DS: | |
11612 | case R_PPC64_ADDR24: | |
65f38f15 AM |
11613 | case R_PPC64_ADDR32: |
11614 | case R_PPC64_ADDR64: | |
11615 | case R_PPC64_UADDR16: | |
11616 | case R_PPC64_UADDR32: | |
11617 | case R_PPC64_UADDR64: | |
411e1bfb | 11618 | dodyn: |
5d1634d7 | 11619 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
11620 | break; |
11621 | ||
41bd81ab AM |
11622 | if (NO_OPD_RELOCS && is_opd) |
11623 | break; | |
11624 | ||
65f38f15 | 11625 | if ((info->shared |
4e795f50 | 11626 | && (h == NULL |
039b3fef AM |
11627 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11628 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 11629 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 11630 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
11631 | || (ELIMINATE_COPY_RELOCS |
11632 | && !info->shared | |
65f38f15 | 11633 | && h != NULL |
039b3fef | 11634 | && h->elf.dynindx != -1 |
f5385ebf | 11635 | && !h->elf.non_got_ref |
f5385ebf | 11636 | && !h->elf.def_regular)) |
65f38f15 AM |
11637 | { |
11638 | Elf_Internal_Rela outrel; | |
b34976b6 | 11639 | bfd_boolean skip, relocate; |
65f38f15 | 11640 | asection *sreloc; |
947216bf | 11641 | bfd_byte *loc; |
1cf1f670 | 11642 | bfd_vma out_off; |
65f38f15 AM |
11643 | |
11644 | /* When generating a dynamic object, these relocations | |
11645 | are copied into the output file to be resolved at run | |
11646 | time. */ | |
11647 | ||
b34976b6 AM |
11648 | skip = FALSE; |
11649 | relocate = FALSE; | |
65f38f15 | 11650 | |
1cf1f670 AM |
11651 | out_off = _bfd_elf_section_offset (output_bfd, info, |
11652 | input_section, rel->r_offset); | |
11653 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 11654 | skip = TRUE; |
1cf1f670 | 11655 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 11656 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
11657 | out_off += (input_section->output_section->vma |
11658 | + input_section->output_offset); | |
11659 | outrel.r_offset = out_off; | |
411e1bfb | 11660 | outrel.r_addend = rel->r_addend; |
65f38f15 | 11661 | |
1cf1f670 AM |
11662 | /* Optimize unaligned reloc use. */ |
11663 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
11664 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
11665 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
11666 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
11667 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
11668 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
11669 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
11670 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
11671 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
11672 | ||
65f38f15 | 11673 | if (skip) |
0bb2d96a | 11674 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 11675 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
11676 | && !is_opd |
11677 | && r_type != R_PPC64_TOC) | |
039b3fef | 11678 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
11679 | else |
11680 | { | |
41bd81ab AM |
11681 | /* This symbol is local, or marked to become local, |
11682 | or this is an opd section reloc which must point | |
11683 | at a local function. */ | |
65f38f15 | 11684 | outrel.r_addend += relocation; |
e86ce104 | 11685 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 11686 | { |
3fad3c7c | 11687 | if (is_opd && h != NULL) |
afbe61cf AM |
11688 | { |
11689 | /* Lie about opd entries. This case occurs | |
11690 | when building shared libraries and we | |
11691 | reference a function in another shared | |
3fad3c7c AM |
11692 | lib. The same thing happens for a weak |
11693 | definition in an application that's | |
11694 | overridden by a strong definition in a | |
11695 | shared lib. (I believe this is a generic | |
11696 | bug in binutils handling of weak syms.) | |
11697 | In these cases we won't use the opd | |
1e2f5b6e | 11698 | entry in this lib. */ |
b34976b6 | 11699 | unresolved_reloc = FALSE; |
afbe61cf | 11700 | } |
65f38f15 | 11701 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
11702 | |
11703 | /* We need to relocate .opd contents for ld.so. | |
11704 | Prelink also wants simple and consistent rules | |
11705 | for relocs. This make all RELATIVE relocs have | |
11706 | *r_offset equal to r_addend. */ | |
11707 | relocate = TRUE; | |
65f38f15 AM |
11708 | } |
11709 | else | |
11710 | { | |
11711 | long indx = 0; | |
11712 | ||
1d483afe | 11713 | if (r_symndx == 0 || bfd_is_abs_section (sec)) |
65f38f15 AM |
11714 | ; |
11715 | else if (sec == NULL || sec->owner == NULL) | |
11716 | { | |
11717 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 11718 | return FALSE; |
65f38f15 AM |
11719 | } |
11720 | else | |
11721 | { | |
11722 | asection *osec; | |
11723 | ||
11724 | osec = sec->output_section; | |
11725 | indx = elf_section_data (osec)->dynindx; | |
11726 | ||
74541ad4 AM |
11727 | if (indx == 0) |
11728 | { | |
11729 | if ((osec->flags & SEC_READONLY) == 0 | |
11730 | && htab->elf.data_index_section != NULL) | |
11731 | osec = htab->elf.data_index_section; | |
11732 | else | |
11733 | osec = htab->elf.text_index_section; | |
11734 | indx = elf_section_data (osec)->dynindx; | |
11735 | } | |
11736 | BFD_ASSERT (indx != 0); | |
11737 | ||
65f38f15 AM |
11738 | /* We are turning this relocation into one |
11739 | against a section symbol, so subtract out | |
11740 | the output section's address but not the | |
11741 | offset of the input section in the output | |
11742 | section. */ | |
11743 | outrel.r_addend -= osec->vma; | |
11744 | } | |
11745 | ||
11746 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
11747 | } | |
11748 | } | |
11749 | ||
11750 | sreloc = elf_section_data (input_section)->sreloc; | |
11751 | if (sreloc == NULL) | |
11752 | abort (); | |
11753 | ||
dfbb6ac9 AM |
11754 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
11755 | >= sreloc->size) | |
11756 | abort (); | |
947216bf AM |
11757 | loc = sreloc->contents; |
11758 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
11759 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
11760 | ||
11761 | /* If this reloc is against an external symbol, it will | |
11762 | be computed at runtime, so there's no need to do | |
81407a69 AM |
11763 | anything now. However, for the sake of prelink ensure |
11764 | that the section contents are a known value. */ | |
65f38f15 | 11765 | if (! relocate) |
81407a69 AM |
11766 | { |
11767 | unresolved_reloc = FALSE; | |
11768 | /* The value chosen here is quite arbitrary as ld.so | |
11769 | ignores section contents except for the special | |
11770 | case of .opd where the contents might be accessed | |
11771 | before relocation. Choose zero, as that won't | |
11772 | cause reloc overflow. */ | |
11773 | relocation = 0; | |
11774 | addend = 0; | |
11775 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11776 | to improve backward compatibility with older | |
11777 | versions of ld. */ | |
11778 | if (r_type == R_PPC64_ADDR64) | |
11779 | addend = outrel.r_addend; | |
11780 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11781 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11782 | addend = (input_section->output_section->vma |
11783 | + input_section->output_offset | |
11784 | + rel->r_offset); | |
81407a69 | 11785 | } |
65f38f15 | 11786 | } |
5bd4f169 AM |
11787 | break; |
11788 | ||
65f38f15 AM |
11789 | case R_PPC64_COPY: |
11790 | case R_PPC64_GLOB_DAT: | |
11791 | case R_PPC64_JMP_SLOT: | |
11792 | case R_PPC64_RELATIVE: | |
11793 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11794 | files. */ | |
ae9a127f | 11795 | /* Fall through. */ |
65f38f15 AM |
11796 | |
11797 | case R_PPC64_PLTGOT16: | |
11798 | case R_PPC64_PLTGOT16_DS: | |
11799 | case R_PPC64_PLTGOT16_HA: | |
11800 | case R_PPC64_PLTGOT16_HI: | |
11801 | case R_PPC64_PLTGOT16_LO: | |
11802 | case R_PPC64_PLTGOT16_LO_DS: | |
11803 | case R_PPC64_PLTREL32: | |
11804 | case R_PPC64_PLTREL64: | |
11805 | /* These ones haven't been implemented yet. */ | |
11806 | ||
11807 | (*_bfd_error_handler) | |
d003868e AM |
11808 | (_("%B: relocation %s is not supported for symbol %s."), |
11809 | input_bfd, | |
4ce794b7 | 11810 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11811 | |
11812 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11813 | ret = FALSE; |
5bd4f169 | 11814 | continue; |
65f38f15 | 11815 | } |
5bd4f169 | 11816 | |
65f38f15 AM |
11817 | /* Do any further special processing. */ |
11818 | switch (r_type) | |
11819 | { | |
11820 | default: | |
11821 | break; | |
11822 | ||
11823 | case R_PPC64_ADDR16_HA: | |
11824 | case R_PPC64_ADDR16_HIGHERA: | |
11825 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11826 | case R_PPC64_TOC16_HA: |
11827 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11828 | case R_PPC64_TPREL16_HA: |
11829 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11830 | case R_PPC64_TPREL16_HIGHER: |
11831 | case R_PPC64_TPREL16_HIGHERA: | |
11832 | case R_PPC64_TPREL16_HIGHEST: | |
11833 | case R_PPC64_TPREL16_HIGHESTA: | |
11834 | case R_PPC64_DTPREL16_HIGHER: | |
11835 | case R_PPC64_DTPREL16_HIGHERA: | |
11836 | case R_PPC64_DTPREL16_HIGHEST: | |
11837 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11838 | /* It's just possible that this symbol is a weak symbol |
11839 | that's not actually defined anywhere. In that case, | |
11840 | 'sec' would be NULL, and we should leave the symbol | |
11841 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11842 | if (sec == NULL) |
11843 | break; | |
11844 | /* Fall thru */ | |
11845 | ||
11846 | case R_PPC64_GOT16_HA: | |
11847 | case R_PPC64_PLTGOT16_HA: | |
11848 | case R_PPC64_PLT16_HA: | |
11849 | case R_PPC64_GOT_TLSGD16_HA: | |
11850 | case R_PPC64_GOT_TLSLD16_HA: | |
11851 | case R_PPC64_GOT_TPREL16_HA: | |
11852 | case R_PPC64_GOT_DTPREL16_HA: | |
11853 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11854 | Bits 0:15 are not used. */ | |
11855 | addend += 0x8000; | |
65f38f15 AM |
11856 | break; |
11857 | ||
11858 | case R_PPC64_ADDR16_DS: | |
11859 | case R_PPC64_ADDR16_LO_DS: | |
11860 | case R_PPC64_GOT16_DS: | |
11861 | case R_PPC64_GOT16_LO_DS: | |
11862 | case R_PPC64_PLT16_LO_DS: | |
11863 | case R_PPC64_SECTOFF_DS: | |
11864 | case R_PPC64_SECTOFF_LO_DS: | |
11865 | case R_PPC64_TOC16_DS: | |
11866 | case R_PPC64_TOC16_LO_DS: | |
11867 | case R_PPC64_PLTGOT16_DS: | |
11868 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11869 | case R_PPC64_GOT_TPREL16_DS: |
11870 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11871 | case R_PPC64_GOT_DTPREL16_DS: | |
11872 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11873 | case R_PPC64_TPREL16_DS: | |
11874 | case R_PPC64_TPREL16_LO_DS: | |
11875 | case R_PPC64_DTPREL16_DS: | |
11876 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11877 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11878 | mask = 3; | |
11879 | /* If this reloc is against an lq insn, then the value must be | |
11880 | a multiple of 16. This is somewhat of a hack, but the | |
11881 | "correct" way to do this by defining _DQ forms of all the | |
11882 | _DS relocs bloats all reloc switches in this file. It | |
11883 | doesn't seem to make much sense to use any of these relocs | |
11884 | in data, so testing the insn should be safe. */ | |
494dac0c | 11885 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11886 | mask = 15; |
11887 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11888 | { |
11889 | (*_bfd_error_handler) | |
d003868e AM |
11890 | (_("%B: error: relocation %s not a multiple of %d"), |
11891 | input_bfd, | |
4ce794b7 | 11892 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11893 | mask + 1); |
65f38f15 | 11894 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11895 | ret = FALSE; |
65f38f15 AM |
11896 | continue; |
11897 | } | |
11898 | break; | |
5bd4f169 AM |
11899 | } |
11900 | ||
239e1f3a AM |
11901 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11902 | because such sections are not SEC_ALLOC and thus ld.so will | |
11903 | not process them. */ | |
65f38f15 | 11904 | if (unresolved_reloc |
239e1f3a | 11905 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11906 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11907 | { |
11908 | (*_bfd_error_handler) | |
d003868e AM |
11909 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11910 | input_bfd, | |
11911 | input_section, | |
9c07fe7c | 11912 | (long) rel->r_offset, |
7b609f53 | 11913 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11914 | h->elf.root.root.string); |
b34976b6 | 11915 | ret = FALSE; |
9c07fe7c | 11916 | } |
5bd4f169 | 11917 | |
65f38f15 | 11918 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11919 | input_bfd, |
11920 | input_section, | |
11921 | contents, | |
411e1bfb | 11922 | rel->r_offset, |
5bd4f169 AM |
11923 | relocation, |
11924 | addend); | |
11925 | ||
ef60b7ff | 11926 | if (r != bfd_reloc_ok) |
5bd4f169 | 11927 | { |
cd27b276 AM |
11928 | if (sym_name == NULL) |
11929 | sym_name = "(null)"; | |
11930 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11931 | { |
cd27b276 AM |
11932 | if (warned) |
11933 | continue; | |
11934 | if (h != NULL | |
039b3fef | 11935 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11936 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11937 | { |
11938 | /* Assume this is a call protected by other code that | |
11939 | detects the symbol is undefined. If this is the case, | |
11940 | we can safely ignore the overflow. If not, the | |
11941 | program is hosed anyway, and a little warning isn't | |
11942 | going to help. */ | |
11943 | ||
11944 | continue; | |
11945 | } | |
11946 | ||
ef60b7ff | 11947 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11948 | (info, (h ? &h->elf.root : NULL), sym_name, |
11949 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11950 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11951 | return FALSE; |
ef60b7ff AM |
11952 | } |
11953 | else | |
11954 | { | |
11955 | (*_bfd_error_handler) | |
d003868e AM |
11956 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11957 | input_bfd, | |
11958 | input_section, | |
7b609f53 | 11959 | (long) rel->r_offset, |
4ce794b7 | 11960 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11961 | sym_name, |
11962 | (int) r); | |
b34976b6 | 11963 | ret = FALSE; |
ef60b7ff | 11964 | } |
5bd4f169 | 11965 | } |
5bd4f169 AM |
11966 | } |
11967 | ||
645ea6a9 AM |
11968 | /* If we're emitting relocations, then shortly after this function |
11969 | returns, reloc offsets and addends for this section will be | |
11970 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11971 | file rather than the input. Save a copy of the relocs for |
11972 | opd_entry_value. */ | |
4cc603a5 | 11973 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11974 | { |
11975 | bfd_size_type amt; | |
11976 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11977 | rel = bfd_alloc (input_bfd, amt); | |
11978 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11979 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11980 | if (rel == NULL) | |
11981 | return FALSE; | |
11982 | memcpy (rel, relocs, amt); | |
11983 | } | |
5bd4f169 AM |
11984 | return ret; |
11985 | } | |
11986 | ||
754021d0 AM |
11987 | /* Adjust the value of any local symbols in opd sections. */ |
11988 | ||
6e0b88f1 | 11989 | static int |
754021d0 AM |
11990 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
11991 | const char *name ATTRIBUTE_UNUSED, | |
11992 | Elf_Internal_Sym *elfsym, | |
11993 | asection *input_sec, | |
11994 | struct elf_link_hash_entry *h) | |
11995 | { | |
74f0fb50 AM |
11996 | struct _opd_sec_data *opd; |
11997 | long adjust; | |
754021d0 AM |
11998 | bfd_vma value; |
11999 | ||
4025353c | 12000 | if (h != NULL) |
6e0b88f1 | 12001 | return 1; |
4025353c | 12002 | |
74f0fb50 AM |
12003 | opd = get_opd_info (input_sec); |
12004 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 12005 | return 1; |
754021d0 AM |
12006 | |
12007 | value = elfsym->st_value - input_sec->output_offset; | |
12008 | if (!info->relocatable) | |
12009 | value -= input_sec->output_section->vma; | |
12010 | ||
74f0fb50 | 12011 | adjust = opd->adjust[value / 8]; |
4025353c | 12012 | if (adjust == -1) |
6e0b88f1 AM |
12013 | return 2; |
12014 | ||
12015 | elfsym->st_value += adjust; | |
12016 | return 1; | |
754021d0 AM |
12017 | } |
12018 | ||
5bd4f169 AM |
12019 | /* Finish up dynamic symbol handling. We set the contents of various |
12020 | dynamic sections here. */ | |
12021 | ||
b34976b6 | 12022 | static bfd_boolean |
4ce794b7 AM |
12023 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
12024 | struct bfd_link_info *info, | |
12025 | struct elf_link_hash_entry *h, | |
12026 | Elf_Internal_Sym *sym) | |
5bd4f169 | 12027 | { |
65f38f15 | 12028 | struct ppc_link_hash_table *htab; |
8387904d AM |
12029 | struct plt_entry *ent; |
12030 | Elf_Internal_Rela rela; | |
12031 | bfd_byte *loc; | |
5bd4f169 | 12032 | |
65f38f15 | 12033 | htab = ppc_hash_table (info); |
5bd4f169 | 12034 | |
8387904d AM |
12035 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
12036 | if (ent->plt.offset != (bfd_vma) -1) | |
12037 | { | |
12038 | /* This symbol has an entry in the procedure linkage | |
12039 | table. Set it up. */ | |
e054468f AM |
12040 | asection *plt = htab->plt; |
12041 | if (!htab->elf.dynamic_sections_created) | |
12042 | plt = htab->iplt; | |
8387904d | 12043 | |
e054468f AM |
12044 | rela.r_offset = (plt->output_section->vma |
12045 | + plt->output_offset | |
8387904d | 12046 | + ent->plt.offset); |
8387904d | 12047 | |
e054468f AM |
12048 | if (!htab->elf.dynamic_sections_created |
12049 | || h->dynindx == -1) | |
12050 | { | |
12051 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
12052 | && h->def_regular | |
12053 | && (h->root.type == bfd_link_hash_defined | |
12054 | || h->root.type == bfd_link_hash_defweak)); | |
12055 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12056 | rela.r_addend = (h->root.u.def.value | |
12057 | + h->root.u.def.section->output_offset | |
12058 | + h->root.u.def.section->output_section->vma | |
12059 | + ent->addend); | |
12060 | } | |
12061 | else | |
12062 | { | |
12063 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
12064 | rela.r_addend = ent->addend; | |
12065 | } | |
12066 | ||
12067 | if (!htab->elf.dynamic_sections_created) | |
12068 | loc = (htab->reliplt->contents | |
12069 | + (ent->plt.offset | |
12070 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
12071 | else | |
12072 | loc = (htab->relplt->contents | |
12073 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
12074 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
8387904d AM |
12075 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
12076 | } | |
5bd4f169 | 12077 | |
f5385ebf | 12078 | if (h->needs_copy) |
5bd4f169 | 12079 | { |
5bd4f169 | 12080 | Elf_Internal_Rela rela; |
947216bf | 12081 | bfd_byte *loc; |
5bd4f169 | 12082 | |
65f38f15 | 12083 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 12084 | |
65f38f15 AM |
12085 | if (h->dynindx == -1 |
12086 | || (h->root.type != bfd_link_hash_defined | |
12087 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 12088 | || htab->relbss == NULL) |
65f38f15 | 12089 | abort (); |
5bd4f169 AM |
12090 | |
12091 | rela.r_offset = (h->root.u.def.value | |
12092 | + h->root.u.def.section->output_section->vma | |
12093 | + h->root.u.def.section->output_offset); | |
12094 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
12095 | rela.r_addend = 0; | |
4ce794b7 AM |
12096 | loc = htab->relbss->contents; |
12097 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 12098 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
12099 | } |
12100 | ||
5bd4f169 AM |
12101 | /* Mark some specially defined symbols as absolute. */ |
12102 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
12103 | sym->st_shndx = SHN_ABS; | |
12104 | ||
b34976b6 | 12105 | return TRUE; |
5bd4f169 AM |
12106 | } |
12107 | ||
65f38f15 AM |
12108 | /* Used to decide how to sort relocs in an optimal manner for the |
12109 | dynamic linker, before writing them out. */ | |
12110 | ||
12111 | static enum elf_reloc_type_class | |
4ce794b7 | 12112 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 12113 | { |
04c9666a | 12114 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 12115 | |
4ce794b7 | 12116 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 12117 | switch (r_type) |
65f38f15 AM |
12118 | { |
12119 | case R_PPC64_RELATIVE: | |
12120 | return reloc_class_relative; | |
12121 | case R_PPC64_JMP_SLOT: | |
12122 | return reloc_class_plt; | |
12123 | case R_PPC64_COPY: | |
12124 | return reloc_class_copy; | |
12125 | default: | |
12126 | return reloc_class_normal; | |
12127 | } | |
12128 | } | |
12129 | ||
5bd4f169 AM |
12130 | /* Finish up the dynamic sections. */ |
12131 | ||
b34976b6 | 12132 | static bfd_boolean |
4ce794b7 AM |
12133 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
12134 | struct bfd_link_info *info) | |
5bd4f169 | 12135 | { |
65f38f15 AM |
12136 | struct ppc_link_hash_table *htab; |
12137 | bfd *dynobj; | |
5bd4f169 | 12138 | asection *sdyn; |
5bd4f169 | 12139 | |
65f38f15 AM |
12140 | htab = ppc_hash_table (info); |
12141 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
12142 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
12143 | ||
65f38f15 | 12144 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 12145 | { |
5bd4f169 AM |
12146 | Elf64_External_Dyn *dyncon, *dynconend; |
12147 | ||
4ce794b7 | 12148 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 12149 | abort (); |
5bd4f169 AM |
12150 | |
12151 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 12152 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
12153 | for (; dyncon < dynconend; dyncon++) |
12154 | { | |
12155 | Elf_Internal_Dyn dyn; | |
19397422 | 12156 | asection *s; |
5bd4f169 AM |
12157 | |
12158 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
12159 | ||
12160 | switch (dyn.d_tag) | |
12161 | { | |
65f38f15 AM |
12162 | default: |
12163 | continue; | |
5bd4f169 | 12164 | |
5d1634d7 | 12165 | case DT_PPC64_GLINK: |
4ce794b7 | 12166 | s = htab->glink; |
6348e046 | 12167 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
12168 | /* We stupidly defined DT_PPC64_GLINK to be the start |
12169 | of glink rather than the first entry point, which is | |
12170 | what ld.so needs, and now have a bigger stub to | |
12171 | support automatic multiple TOCs. */ | |
12172 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
12173 | break; |
12174 | ||
19397422 AM |
12175 | case DT_PPC64_OPD: |
12176 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
12177 | if (s == NULL) |
12178 | continue; | |
12179 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
12180 | break; |
12181 | ||
12182 | case DT_PPC64_OPDSZ: | |
12183 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
12184 | if (s == NULL) |
12185 | continue; | |
eea6121a | 12186 | dyn.d_un.d_val = s->size; |
19397422 AM |
12187 | break; |
12188 | ||
65f38f15 | 12189 | case DT_PLTGOT: |
4ce794b7 | 12190 | s = htab->plt; |
6348e046 | 12191 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
12192 | break; |
12193 | ||
12194 | case DT_JMPREL: | |
4ce794b7 | 12195 | s = htab->relplt; |
6348e046 | 12196 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 12197 | break; |
5bd4f169 | 12198 | |
65f38f15 | 12199 | case DT_PLTRELSZ: |
eea6121a | 12200 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
12201 | break; |
12202 | ||
12203 | case DT_RELASZ: | |
12204 | /* Don't count procedure linkage table relocs in the | |
12205 | overall reloc count. */ | |
4ce794b7 | 12206 | s = htab->relplt; |
6348e046 AM |
12207 | if (s == NULL) |
12208 | continue; | |
eea6121a | 12209 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
12210 | break; |
12211 | ||
12212 | case DT_RELA: | |
12213 | /* We may not be using the standard ELF linker script. | |
12214 | If .rela.plt is the first .rela section, we adjust | |
12215 | DT_RELA to not include it. */ | |
4ce794b7 | 12216 | s = htab->relplt; |
6348e046 AM |
12217 | if (s == NULL) |
12218 | continue; | |
12219 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
12220 | continue; | |
eea6121a | 12221 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 12222 | break; |
5bd4f169 | 12223 | } |
5bd4f169 | 12224 | |
65f38f15 | 12225 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 12226 | } |
5bd4f169 AM |
12227 | } |
12228 | ||
eea6121a | 12229 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
12230 | { |
12231 | /* Fill in the first entry in the global offset table. | |
12232 | We use it to hold the link-time TOCbase. */ | |
12233 | bfd_put_64 (output_bfd, | |
60ee0d4a | 12234 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 12235 | htab->got->contents); |
5d1634d7 AM |
12236 | |
12237 | /* Set .got entry size. */ | |
4ce794b7 | 12238 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
12239 | } |
12240 | ||
eea6121a | 12241 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
12242 | { |
12243 | /* Set .plt entry size. */ | |
4ce794b7 | 12244 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
12245 | = PLT_ENTRY_SIZE; |
12246 | } | |
12247 | ||
84f5d08e AM |
12248 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
12249 | brlt ourselves if emitrelocations. */ | |
12250 | if (htab->brlt != NULL | |
12251 | && htab->brlt->reloc_count != 0 | |
12252 | && !_bfd_elf_link_output_relocs (output_bfd, | |
12253 | htab->brlt, | |
12254 | &elf_section_data (htab->brlt)->rel_hdr, | |
12255 | elf_section_data (htab->brlt)->relocs, | |
12256 | NULL)) | |
12257 | return FALSE; | |
12258 | ||
176a0d42 AM |
12259 | if (htab->glink != NULL |
12260 | && htab->glink->reloc_count != 0 | |
12261 | && !_bfd_elf_link_output_relocs (output_bfd, | |
12262 | htab->glink, | |
12263 | &elf_section_data (htab->glink)->rel_hdr, | |
12264 | elf_section_data (htab->glink)->relocs, | |
12265 | NULL)) | |
12266 | return FALSE; | |
12267 | ||
e717da7e | 12268 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
12269 | since we didn't add them to DYNOBJ. We know dynobj is the first |
12270 | bfd. */ | |
e717da7e AM |
12271 | while ((dynobj = dynobj->link_next) != NULL) |
12272 | { | |
12273 | asection *s; | |
7b53ace3 | 12274 | |
0c8d6e5c | 12275 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
12276 | continue; |
12277 | ||
e717da7e AM |
12278 | s = ppc64_elf_tdata (dynobj)->got; |
12279 | if (s != NULL | |
eea6121a | 12280 | && s->size != 0 |
e717da7e AM |
12281 | && s->output_section != bfd_abs_section_ptr |
12282 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
12283 | s->contents, s->output_offset, | |
eea6121a | 12284 | s->size)) |
e717da7e AM |
12285 | return FALSE; |
12286 | s = ppc64_elf_tdata (dynobj)->relgot; | |
12287 | if (s != NULL | |
eea6121a | 12288 | && s->size != 0 |
e717da7e AM |
12289 | && s->output_section != bfd_abs_section_ptr |
12290 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
12291 | s->contents, s->output_offset, | |
eea6121a | 12292 | s->size)) |
e717da7e AM |
12293 | return FALSE; |
12294 | } | |
f6c52c13 | 12295 | |
b34976b6 | 12296 | return TRUE; |
5bd4f169 AM |
12297 | } |
12298 | ||
5bd4f169 | 12299 | #include "elf64-target.h" |