Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
84f5d08e | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
b2a8e766 | 3 | Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
56 | static bfd_vma opd_entry_value |
57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 58 | |
ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
62 | #define TARGET_BIG_NAME "elf64-powerpc" | |
63 | #define ELF_ARCH bfd_arch_powerpc | |
64 | #define ELF_MACHINE_CODE EM_PPC64 | |
65 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 66 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
67 | #define elf_info_to_howto ppc64_elf_info_to_howto |
68 | ||
69 | #define elf_backend_want_got_sym 0 | |
70 | #define elf_backend_want_plt_sym 0 | |
71 | #define elf_backend_plt_alignment 3 | |
72 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 73 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
74 | #define elf_backend_can_gc_sections 1 |
75 | #define elf_backend_can_refcount 1 | |
76 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 77 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 78 | |
e717da7e | 79 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 80 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
157090f7 | 81 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ad8e1ba5 AM |
82 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
83 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
84 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
85 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 86 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
87 | |
88 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
89 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
90 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 91 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
92 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
93 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 94 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d | 95 | #define elf_backend_check_directives ppc64_elf_check_directives |
97fed1c9 | 96 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 97 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 98 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
64d03ab5 | 99 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
100 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
101 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
102 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
103 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
104 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
105 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 106 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 107 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
108 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
109 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
110 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
111 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 112 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 113 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 114 | |
5bd4f169 AM |
115 | /* The name of the dynamic interpreter. This is put in the .interp |
116 | section. */ | |
117 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
118 | ||
119 | /* The size in bytes of an entry in the procedure linkage table. */ | |
120 | #define PLT_ENTRY_SIZE 24 | |
121 | ||
122 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 123 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
124 | |
125 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
126 | #define TOC_BASE_OFF 0x8000 |
127 | ||
128 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
129 | #define TP_OFFSET 0x7000 | |
130 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 131 | |
ad8e1ba5 AM |
132 | /* .plt call stub instructions. The normal stub is like this, but |
133 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 134 | insert an addi to adjust r12. */ |
ad8e1ba5 | 135 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
136 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
137 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
138 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 139 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 140 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
141 | /* ld %r11,xxx+16@l(%r12) */ |
142 | #define BCTR 0x4e800420 /* bctr */ | |
143 | ||
5d1634d7 | 144 | |
ee4bf8d2 | 145 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 146 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
147 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
148 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
149 | ||
ac2df442 AM |
150 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
151 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
152 | ||
ad8e1ba5 AM |
153 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
154 | ||
ee4bf8d2 | 155 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 156 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
157 | /* 0: */ |
158 | /* .quad plt0-1f */ | |
159 | /* __glink: */ | |
160 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
161 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
162 | /* 1: */ | |
163 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
164 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
165 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
166 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
167 | /* ld %11,0(%12) */ | |
168 | /* ld %2,8(%12) */ | |
169 | /* mtctr %11 */ | |
170 | /* ld %11,16(%12) */ | |
171 | /* bctr */ | |
5d1634d7 AM |
172 | |
173 | /* Pad with this. */ | |
174 | #define NOP 0x60000000 | |
175 | ||
721956f4 AM |
176 | /* Some other nops. */ |
177 | #define CROR_151515 0x4def7b82 | |
178 | #define CROR_313131 0x4ffffb82 | |
179 | ||
cedb70c5 | 180 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
181 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
182 | #define B_DOT 0x48000000 /* b . */ | |
183 | ||
184 | /* After that, we need two instructions to load the index, followed by | |
185 | a branch. */ | |
186 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 187 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 188 | |
deb0e272 AM |
189 | /* Instructions used by the save and restore reg functions. */ |
190 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
191 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
192 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
193 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
194 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
195 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
196 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
197 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
198 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
199 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
200 | #define BLR 0x4e800020 /* blr */ |
201 | ||
41bd81ab AM |
202 | /* Since .opd is an array of descriptors and each entry will end up |
203 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
204 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 205 | relocate .opd without reloc entries. */ |
41bd81ab AM |
206 | #ifndef NO_OPD_RELOCS |
207 | #define NO_OPD_RELOCS 0 | |
208 | #endif | |
5bd4f169 | 209 | \f |
f5e87a1d | 210 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 211 | |
5bd4f169 | 212 | /* Relocation HOWTO's. */ |
04c9666a | 213 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
214 | |
215 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
216 | /* This reloc does nothing. */ | |
217 | HOWTO (R_PPC64_NONE, /* type */ | |
218 | 0, /* rightshift */ | |
411e1bfb AM |
219 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
220 | 32, /* bitsize */ | |
b34976b6 | 221 | FALSE, /* pc_relative */ |
5bd4f169 | 222 | 0, /* bitpos */ |
f5e87a1d | 223 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
224 | bfd_elf_generic_reloc, /* special_function */ |
225 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 226 | FALSE, /* partial_inplace */ |
d006db6c | 227 | 0, /* src_mask */ |
5bd4f169 | 228 | 0, /* dst_mask */ |
b34976b6 | 229 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
230 | |
231 | /* A standard 32 bit relocation. */ | |
232 | HOWTO (R_PPC64_ADDR32, /* type */ | |
233 | 0, /* rightshift */ | |
234 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
235 | 32, /* bitsize */ | |
b34976b6 | 236 | FALSE, /* pc_relative */ |
5bd4f169 AM |
237 | 0, /* bitpos */ |
238 | complain_overflow_bitfield, /* complain_on_overflow */ | |
239 | bfd_elf_generic_reloc, /* special_function */ | |
240 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 241 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
242 | 0, /* src_mask */ |
243 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 244 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
245 | |
246 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
247 | FIXME: we don't check that, we just clear them. */ | |
248 | HOWTO (R_PPC64_ADDR24, /* type */ | |
249 | 0, /* rightshift */ | |
250 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
251 | 26, /* bitsize */ | |
b34976b6 | 252 | FALSE, /* pc_relative */ |
5bd4f169 AM |
253 | 0, /* bitpos */ |
254 | complain_overflow_bitfield, /* complain_on_overflow */ | |
255 | bfd_elf_generic_reloc, /* special_function */ | |
256 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 257 | FALSE, /* partial_inplace */ |
d006db6c | 258 | 0, /* src_mask */ |
f5e87a1d | 259 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 260 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
261 | |
262 | /* A standard 16 bit relocation. */ | |
263 | HOWTO (R_PPC64_ADDR16, /* type */ | |
264 | 0, /* rightshift */ | |
265 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
266 | 16, /* bitsize */ | |
b34976b6 | 267 | FALSE, /* pc_relative */ |
5bd4f169 AM |
268 | 0, /* bitpos */ |
269 | complain_overflow_bitfield, /* complain_on_overflow */ | |
270 | bfd_elf_generic_reloc, /* special_function */ | |
271 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 272 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
273 | 0, /* src_mask */ |
274 | 0xffff, /* dst_mask */ | |
b34976b6 | 275 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
276 | |
277 | /* A 16 bit relocation without overflow. */ | |
278 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
279 | 0, /* rightshift */ | |
280 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
281 | 16, /* bitsize */ | |
b34976b6 | 282 | FALSE, /* pc_relative */ |
5bd4f169 AM |
283 | 0, /* bitpos */ |
284 | complain_overflow_dont,/* complain_on_overflow */ | |
285 | bfd_elf_generic_reloc, /* special_function */ | |
286 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 287 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
288 | 0, /* src_mask */ |
289 | 0xffff, /* dst_mask */ | |
b34976b6 | 290 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
291 | |
292 | /* Bits 16-31 of an address. */ | |
293 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
294 | 16, /* rightshift */ | |
295 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 16, /* bitsize */ | |
b34976b6 | 297 | FALSE, /* pc_relative */ |
5bd4f169 AM |
298 | 0, /* bitpos */ |
299 | complain_overflow_dont, /* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 302 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
303 | 0, /* src_mask */ |
304 | 0xffff, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
306 | |
307 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
308 | bits, treated as a signed number, is negative. */ | |
309 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
310 | 16, /* rightshift */ | |
311 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
312 | 16, /* bitsize */ | |
b34976b6 | 313 | FALSE, /* pc_relative */ |
5bd4f169 AM |
314 | 0, /* bitpos */ |
315 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 316 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 317 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 318 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
319 | 0, /* src_mask */ |
320 | 0xffff, /* dst_mask */ | |
b34976b6 | 321 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
322 | |
323 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
324 | FIXME: we don't check that, we just clear them. */ | |
325 | HOWTO (R_PPC64_ADDR14, /* type */ | |
326 | 0, /* rightshift */ | |
327 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
328 | 16, /* bitsize */ | |
b34976b6 | 329 | FALSE, /* pc_relative */ |
5bd4f169 AM |
330 | 0, /* bitpos */ |
331 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 332 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 333 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 334 | FALSE, /* partial_inplace */ |
d006db6c | 335 | 0, /* src_mask */ |
f5e87a1d | 336 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 337 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
338 | |
339 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
340 | indicate that the branch is expected to be taken. The lower two | |
341 | bits must be zero. */ | |
342 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
343 | 0, /* rightshift */ | |
344 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
345 | 16, /* bitsize */ | |
b34976b6 | 346 | FALSE, /* pc_relative */ |
5bd4f169 AM |
347 | 0, /* bitpos */ |
348 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 349 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 350 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 351 | FALSE, /* partial_inplace */ |
d006db6c | 352 | 0, /* src_mask */ |
f5e87a1d | 353 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 354 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
355 | |
356 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
357 | indicate that the branch is not expected to be taken. The lower | |
358 | two bits must be zero. */ | |
359 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
360 | 0, /* rightshift */ | |
361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
362 | 16, /* bitsize */ | |
b34976b6 | 363 | FALSE, /* pc_relative */ |
5bd4f169 AM |
364 | 0, /* bitpos */ |
365 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 366 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 367 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 368 | FALSE, /* partial_inplace */ |
d006db6c | 369 | 0, /* src_mask */ |
f5e87a1d | 370 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 371 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
372 | |
373 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
374 | HOWTO (R_PPC64_REL24, /* type */ | |
375 | 0, /* rightshift */ | |
376 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
377 | 26, /* bitsize */ | |
b34976b6 | 378 | TRUE, /* pc_relative */ |
5bd4f169 AM |
379 | 0, /* bitpos */ |
380 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 381 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 382 | "R_PPC64_REL24", /* name */ |
b34976b6 | 383 | FALSE, /* partial_inplace */ |
d006db6c | 384 | 0, /* src_mask */ |
f5e87a1d | 385 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 386 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
387 | |
388 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
389 | HOWTO (R_PPC64_REL14, /* type */ | |
390 | 0, /* rightshift */ | |
391 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
392 | 16, /* bitsize */ | |
b34976b6 | 393 | TRUE, /* pc_relative */ |
5bd4f169 AM |
394 | 0, /* bitpos */ |
395 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 396 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 397 | "R_PPC64_REL14", /* name */ |
b34976b6 | 398 | FALSE, /* partial_inplace */ |
d006db6c | 399 | 0, /* src_mask */ |
f5e87a1d | 400 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 401 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
402 | |
403 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
404 | the branch is expected to be taken. The lower two bits must be | |
405 | zero. */ | |
406 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
407 | 0, /* rightshift */ | |
408 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
409 | 16, /* bitsize */ | |
b34976b6 | 410 | TRUE, /* pc_relative */ |
5bd4f169 AM |
411 | 0, /* bitpos */ |
412 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 413 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 414 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 415 | FALSE, /* partial_inplace */ |
d006db6c | 416 | 0, /* src_mask */ |
f5e87a1d | 417 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 418 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
419 | |
420 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
421 | the branch is not expected to be taken. The lower two bits must | |
422 | be zero. */ | |
423 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
424 | 0, /* rightshift */ | |
425 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
426 | 16, /* bitsize */ | |
b34976b6 | 427 | TRUE, /* pc_relative */ |
5bd4f169 AM |
428 | 0, /* bitpos */ |
429 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 430 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 431 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 432 | FALSE, /* partial_inplace */ |
d006db6c | 433 | 0, /* src_mask */ |
f5e87a1d | 434 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 435 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
436 | |
437 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
438 | symbol. */ | |
439 | HOWTO (R_PPC64_GOT16, /* type */ | |
440 | 0, /* rightshift */ | |
441 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
442 | 16, /* bitsize */ | |
b34976b6 | 443 | FALSE, /* pc_relative */ |
5bd4f169 AM |
444 | 0, /* bitpos */ |
445 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 446 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 447 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 448 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
449 | 0, /* src_mask */ |
450 | 0xffff, /* dst_mask */ | |
b34976b6 | 451 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
452 | |
453 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
454 | the symbol. */ | |
455 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
456 | 0, /* rightshift */ | |
457 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
458 | 16, /* bitsize */ | |
b34976b6 | 459 | FALSE, /* pc_relative */ |
5bd4f169 AM |
460 | 0, /* bitpos */ |
461 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 462 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 463 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 464 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
465 | 0, /* src_mask */ |
466 | 0xffff, /* dst_mask */ | |
b34976b6 | 467 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
468 | |
469 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
470 | the symbol. */ | |
471 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
472 | 16, /* rightshift */ | |
473 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
474 | 16, /* bitsize */ | |
b34976b6 | 475 | FALSE, /* pc_relative */ |
5bd4f169 AM |
476 | 0, /* bitpos */ |
477 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 478 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 479 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 480 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
481 | 0, /* src_mask */ |
482 | 0xffff, /* dst_mask */ | |
b34976b6 | 483 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
484 | |
485 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
486 | the symbol. */ | |
487 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
488 | 16, /* rightshift */ | |
489 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
490 | 16, /* bitsize */ | |
b34976b6 | 491 | FALSE, /* pc_relative */ |
5bd4f169 AM |
492 | 0, /* bitpos */ |
493 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 494 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 495 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 496 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
497 | 0, /* src_mask */ |
498 | 0xffff, /* dst_mask */ | |
b34976b6 | 499 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
500 | |
501 | /* This is used only by the dynamic linker. The symbol should exist | |
502 | both in the object being run and in some shared library. The | |
503 | dynamic linker copies the data addressed by the symbol from the | |
504 | shared library into the object, because the object being | |
505 | run has to have the data at some particular address. */ | |
506 | HOWTO (R_PPC64_COPY, /* type */ | |
507 | 0, /* rightshift */ | |
f5e87a1d AM |
508 | 0, /* this one is variable size */ |
509 | 0, /* bitsize */ | |
b34976b6 | 510 | FALSE, /* pc_relative */ |
5bd4f169 | 511 | 0, /* bitpos */ |
f5e87a1d AM |
512 | complain_overflow_dont, /* complain_on_overflow */ |
513 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 514 | "R_PPC64_COPY", /* name */ |
b34976b6 | 515 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
516 | 0, /* src_mask */ |
517 | 0, /* dst_mask */ | |
b34976b6 | 518 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
519 | |
520 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
521 | entries. */ | |
522 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
523 | 0, /* rightshift */ | |
524 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
525 | 64, /* bitsize */ | |
b34976b6 | 526 | FALSE, /* pc_relative */ |
5bd4f169 AM |
527 | 0, /* bitpos */ |
528 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 529 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 530 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 531 | FALSE, /* partial_inplace */ |
5bd4f169 | 532 | 0, /* src_mask */ |
f5e87a1d | 533 | ONES (64), /* dst_mask */ |
b34976b6 | 534 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
535 | |
536 | /* Created by the link editor. Marks a procedure linkage table | |
537 | entry for a symbol. */ | |
538 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
539 | 0, /* rightshift */ | |
540 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
541 | 0, /* bitsize */ | |
b34976b6 | 542 | FALSE, /* pc_relative */ |
5bd4f169 AM |
543 | 0, /* bitpos */ |
544 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 545 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 546 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 547 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
548 | 0, /* src_mask */ |
549 | 0, /* dst_mask */ | |
b34976b6 | 550 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
551 | |
552 | /* Used only by the dynamic linker. When the object is run, this | |
553 | doubleword64 is set to the load address of the object, plus the | |
554 | addend. */ | |
555 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
556 | 0, /* rightshift */ | |
557 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
558 | 64, /* bitsize */ | |
b34976b6 | 559 | FALSE, /* pc_relative */ |
5bd4f169 AM |
560 | 0, /* bitpos */ |
561 | complain_overflow_dont, /* complain_on_overflow */ | |
562 | bfd_elf_generic_reloc, /* special_function */ | |
563 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 564 | FALSE, /* partial_inplace */ |
5bd4f169 | 565 | 0, /* src_mask */ |
f5e87a1d | 566 | ONES (64), /* dst_mask */ |
b34976b6 | 567 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
568 | |
569 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
570 | HOWTO (R_PPC64_UADDR32, /* type */ | |
571 | 0, /* rightshift */ | |
572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
573 | 32, /* bitsize */ | |
b34976b6 | 574 | FALSE, /* pc_relative */ |
5bd4f169 AM |
575 | 0, /* bitpos */ |
576 | complain_overflow_bitfield, /* complain_on_overflow */ | |
577 | bfd_elf_generic_reloc, /* special_function */ | |
578 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 579 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
580 | 0, /* src_mask */ |
581 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 582 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
583 | |
584 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
585 | HOWTO (R_PPC64_UADDR16, /* type */ | |
586 | 0, /* rightshift */ | |
587 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
588 | 16, /* bitsize */ | |
b34976b6 | 589 | FALSE, /* pc_relative */ |
5bd4f169 AM |
590 | 0, /* bitpos */ |
591 | complain_overflow_bitfield, /* complain_on_overflow */ | |
592 | bfd_elf_generic_reloc, /* special_function */ | |
593 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 594 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
595 | 0, /* src_mask */ |
596 | 0xffff, /* dst_mask */ | |
b34976b6 | 597 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
598 | |
599 | /* 32-bit PC relative. */ | |
600 | HOWTO (R_PPC64_REL32, /* type */ | |
601 | 0, /* rightshift */ | |
602 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
603 | 32, /* bitsize */ | |
b34976b6 | 604 | TRUE, /* pc_relative */ |
5bd4f169 | 605 | 0, /* bitpos */ |
cedb70c5 | 606 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
607 | complain_overflow_signed, /* complain_on_overflow */ |
608 | bfd_elf_generic_reloc, /* special_function */ | |
609 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 610 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
611 | 0, /* src_mask */ |
612 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 613 | TRUE), /* pcrel_offset */ |
5bd4f169 | 614 | |
10ed1bba | 615 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
616 | HOWTO (R_PPC64_PLT32, /* type */ |
617 | 0, /* rightshift */ | |
618 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
619 | 32, /* bitsize */ | |
b34976b6 | 620 | FALSE, /* pc_relative */ |
5bd4f169 AM |
621 | 0, /* bitpos */ |
622 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 623 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 624 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
5bd4f169 | 626 | 0, /* src_mask */ |
f5e87a1d | 627 | 0xffffffff, /* dst_mask */ |
b34976b6 | 628 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
629 | |
630 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
631 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
632 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
633 | 0, /* rightshift */ | |
634 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
635 | 32, /* bitsize */ | |
b34976b6 | 636 | TRUE, /* pc_relative */ |
5bd4f169 AM |
637 | 0, /* bitpos */ |
638 | complain_overflow_signed, /* complain_on_overflow */ | |
639 | bfd_elf_generic_reloc, /* special_function */ | |
640 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 641 | FALSE, /* partial_inplace */ |
5bd4f169 | 642 | 0, /* src_mask */ |
f5e87a1d | 643 | 0xffffffff, /* dst_mask */ |
b34976b6 | 644 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
645 | |
646 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
647 | the symbol. */ | |
648 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
649 | 0, /* rightshift */ | |
650 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
651 | 16, /* bitsize */ | |
b34976b6 | 652 | FALSE, /* pc_relative */ |
5bd4f169 AM |
653 | 0, /* bitpos */ |
654 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 655 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 656 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 657 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
658 | 0, /* src_mask */ |
659 | 0xffff, /* dst_mask */ | |
b34976b6 | 660 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
661 | |
662 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
663 | the symbol. */ | |
664 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
665 | 16, /* rightshift */ | |
666 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
667 | 16, /* bitsize */ | |
b34976b6 | 668 | FALSE, /* pc_relative */ |
5bd4f169 AM |
669 | 0, /* bitpos */ |
670 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 671 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 672 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 673 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
674 | 0, /* src_mask */ |
675 | 0xffff, /* dst_mask */ | |
b34976b6 | 676 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
677 | |
678 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
679 | the symbol. */ | |
680 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
681 | 16, /* rightshift */ | |
682 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
683 | 16, /* bitsize */ | |
b34976b6 | 684 | FALSE, /* pc_relative */ |
5bd4f169 AM |
685 | 0, /* bitpos */ |
686 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 687 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 688 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 689 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
690 | 0, /* src_mask */ |
691 | 0xffff, /* dst_mask */ | |
b34976b6 | 692 | FALSE), /* pcrel_offset */ |
5bd4f169 | 693 | |
c061c2d8 | 694 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
695 | HOWTO (R_PPC64_SECTOFF, /* type */ |
696 | 0, /* rightshift */ | |
c061c2d8 AM |
697 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
698 | 16, /* bitsize */ | |
b34976b6 | 699 | FALSE, /* pc_relative */ |
5bd4f169 AM |
700 | 0, /* bitpos */ |
701 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 702 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 703 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 704 | FALSE, /* partial_inplace */ |
5bd4f169 | 705 | 0, /* src_mask */ |
c061c2d8 | 706 | 0xffff, /* dst_mask */ |
b34976b6 | 707 | FALSE), /* pcrel_offset */ |
5bd4f169 | 708 | |
c061c2d8 | 709 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
710 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
711 | 0, /* rightshift */ | |
712 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
713 | 16, /* bitsize */ | |
b34976b6 | 714 | FALSE, /* pc_relative */ |
5bd4f169 AM |
715 | 0, /* bitpos */ |
716 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 717 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 718 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 719 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
720 | 0, /* src_mask */ |
721 | 0xffff, /* dst_mask */ | |
b34976b6 | 722 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
723 | |
724 | /* 16-bit upper half section relative relocation. */ | |
725 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
726 | 16, /* rightshift */ | |
727 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
728 | 16, /* bitsize */ | |
b34976b6 | 729 | FALSE, /* pc_relative */ |
5bd4f169 AM |
730 | 0, /* bitpos */ |
731 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 732 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 733 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 734 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
735 | 0, /* src_mask */ |
736 | 0xffff, /* dst_mask */ | |
b34976b6 | 737 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
738 | |
739 | /* 16-bit upper half adjusted section relative relocation. */ | |
740 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
741 | 16, /* rightshift */ | |
742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 16, /* bitsize */ | |
b34976b6 | 744 | FALSE, /* pc_relative */ |
5bd4f169 AM |
745 | 0, /* bitpos */ |
746 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 747 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 748 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 749 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
750 | 0, /* src_mask */ |
751 | 0xffff, /* dst_mask */ | |
b34976b6 | 752 | FALSE), /* pcrel_offset */ |
5bd4f169 | 753 | |
04c9666a AM |
754 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
755 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
756 | 2, /* rightshift */ |
757 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
758 | 30, /* bitsize */ | |
b34976b6 | 759 | TRUE, /* pc_relative */ |
5bd4f169 AM |
760 | 0, /* bitpos */ |
761 | complain_overflow_dont, /* complain_on_overflow */ | |
762 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 763 | "R_PPC64_REL30", /* name */ |
b34976b6 | 764 | FALSE, /* partial_inplace */ |
d006db6c | 765 | 0, /* src_mask */ |
5bd4f169 | 766 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 767 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
768 | |
769 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
770 | ||
771 | /* A standard 64-bit relocation. */ | |
772 | HOWTO (R_PPC64_ADDR64, /* type */ | |
773 | 0, /* rightshift */ | |
774 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
775 | 64, /* bitsize */ | |
b34976b6 | 776 | FALSE, /* pc_relative */ |
5bd4f169 AM |
777 | 0, /* bitpos */ |
778 | complain_overflow_dont, /* complain_on_overflow */ | |
779 | bfd_elf_generic_reloc, /* special_function */ | |
780 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 781 | FALSE, /* partial_inplace */ |
5bd4f169 | 782 | 0, /* src_mask */ |
f5e87a1d | 783 | ONES (64), /* dst_mask */ |
b34976b6 | 784 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
785 | |
786 | /* The bits 32-47 of an address. */ | |
787 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
788 | 32, /* rightshift */ | |
789 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
790 | 16, /* bitsize */ | |
b34976b6 | 791 | FALSE, /* pc_relative */ |
5bd4f169 AM |
792 | 0, /* bitpos */ |
793 | complain_overflow_dont, /* complain_on_overflow */ | |
794 | bfd_elf_generic_reloc, /* special_function */ | |
795 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 796 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
797 | 0, /* src_mask */ |
798 | 0xffff, /* dst_mask */ | |
b34976b6 | 799 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
800 | |
801 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
802 | 16 bits, treated as a signed number, is negative. */ | |
803 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
804 | 32, /* rightshift */ | |
805 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
806 | 16, /* bitsize */ | |
b34976b6 | 807 | FALSE, /* pc_relative */ |
5bd4f169 AM |
808 | 0, /* bitpos */ |
809 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 810 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 811 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 812 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
813 | 0, /* src_mask */ |
814 | 0xffff, /* dst_mask */ | |
b34976b6 | 815 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
816 | |
817 | /* The bits 48-63 of an address. */ | |
818 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
819 | 48, /* rightshift */ | |
820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
821 | 16, /* bitsize */ | |
b34976b6 | 822 | FALSE, /* pc_relative */ |
5bd4f169 AM |
823 | 0, /* bitpos */ |
824 | complain_overflow_dont, /* complain_on_overflow */ | |
825 | bfd_elf_generic_reloc, /* special_function */ | |
826 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 827 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
828 | 0, /* src_mask */ |
829 | 0xffff, /* dst_mask */ | |
b34976b6 | 830 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
831 | |
832 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
833 | 16 bits, treated as a signed number, is negative. */ | |
834 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
835 | 48, /* rightshift */ | |
836 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
837 | 16, /* bitsize */ | |
b34976b6 | 838 | FALSE, /* pc_relative */ |
5bd4f169 AM |
839 | 0, /* bitpos */ |
840 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 841 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 842 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 843 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
844 | 0, /* src_mask */ |
845 | 0xffff, /* dst_mask */ | |
b34976b6 | 846 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
847 | |
848 | /* Like ADDR64, but may be unaligned. */ | |
849 | HOWTO (R_PPC64_UADDR64, /* type */ | |
850 | 0, /* rightshift */ | |
851 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
852 | 64, /* bitsize */ | |
b34976b6 | 853 | FALSE, /* pc_relative */ |
5bd4f169 AM |
854 | 0, /* bitpos */ |
855 | complain_overflow_dont, /* complain_on_overflow */ | |
856 | bfd_elf_generic_reloc, /* special_function */ | |
857 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 858 | FALSE, /* partial_inplace */ |
5bd4f169 | 859 | 0, /* src_mask */ |
f5e87a1d | 860 | ONES (64), /* dst_mask */ |
b34976b6 | 861 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
862 | |
863 | /* 64-bit relative relocation. */ | |
864 | HOWTO (R_PPC64_REL64, /* type */ | |
865 | 0, /* rightshift */ | |
866 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
867 | 64, /* bitsize */ | |
b34976b6 | 868 | TRUE, /* pc_relative */ |
5bd4f169 AM |
869 | 0, /* bitpos */ |
870 | complain_overflow_dont, /* complain_on_overflow */ | |
871 | bfd_elf_generic_reloc, /* special_function */ | |
872 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 873 | FALSE, /* partial_inplace */ |
5bd4f169 | 874 | 0, /* src_mask */ |
f5e87a1d | 875 | ONES (64), /* dst_mask */ |
b34976b6 | 876 | TRUE), /* pcrel_offset */ |
5bd4f169 | 877 | |
cedb70c5 | 878 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
879 | HOWTO (R_PPC64_PLT64, /* type */ |
880 | 0, /* rightshift */ | |
881 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
882 | 64, /* bitsize */ | |
b34976b6 | 883 | FALSE, /* pc_relative */ |
5bd4f169 AM |
884 | 0, /* bitpos */ |
885 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 886 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 887 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 888 | FALSE, /* partial_inplace */ |
5bd4f169 | 889 | 0, /* src_mask */ |
f5e87a1d | 890 | ONES (64), /* dst_mask */ |
b34976b6 | 891 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
892 | |
893 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
894 | table. */ | |
895 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
896 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
897 | 0, /* rightshift */ | |
898 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
899 | 64, /* bitsize */ | |
b34976b6 | 900 | TRUE, /* pc_relative */ |
5bd4f169 AM |
901 | 0, /* bitpos */ |
902 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 903 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 904 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 905 | FALSE, /* partial_inplace */ |
5bd4f169 | 906 | 0, /* src_mask */ |
f5e87a1d | 907 | ONES (64), /* dst_mask */ |
b34976b6 | 908 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
909 | |
910 | /* 16 bit TOC-relative relocation. */ | |
911 | ||
912 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
913 | HOWTO (R_PPC64_TOC16, /* type */ | |
914 | 0, /* rightshift */ | |
915 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
916 | 16, /* bitsize */ | |
b34976b6 | 917 | FALSE, /* pc_relative */ |
5bd4f169 AM |
918 | 0, /* bitpos */ |
919 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 920 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 921 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 922 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
923 | 0, /* src_mask */ |
924 | 0xffff, /* dst_mask */ | |
b34976b6 | 925 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
926 | |
927 | /* 16 bit TOC-relative relocation without overflow. */ | |
928 | ||
929 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
930 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
931 | 0, /* rightshift */ | |
932 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
933 | 16, /* bitsize */ | |
b34976b6 | 934 | FALSE, /* pc_relative */ |
5bd4f169 AM |
935 | 0, /* bitpos */ |
936 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 937 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 938 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 939 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
940 | 0, /* src_mask */ |
941 | 0xffff, /* dst_mask */ | |
b34976b6 | 942 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
943 | |
944 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
945 | ||
946 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
947 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
948 | 16, /* rightshift */ | |
949 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
950 | 16, /* bitsize */ | |
b34976b6 | 951 | FALSE, /* pc_relative */ |
5bd4f169 AM |
952 | 0, /* bitpos */ |
953 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 954 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 955 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 956 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
957 | 0, /* src_mask */ |
958 | 0xffff, /* dst_mask */ | |
b34976b6 | 959 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
960 | |
961 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
962 | contents of the low 16 bits, treated as a signed number, is | |
963 | negative. */ | |
964 | ||
965 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
966 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
967 | 16, /* rightshift */ | |
968 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 16, /* bitsize */ | |
b34976b6 | 970 | FALSE, /* pc_relative */ |
5bd4f169 AM |
971 | 0, /* bitpos */ |
972 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 973 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 974 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 975 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
976 | 0, /* src_mask */ |
977 | 0xffff, /* dst_mask */ | |
b34976b6 | 978 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
979 | |
980 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
981 | ||
982 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
983 | HOWTO (R_PPC64_TOC, /* type */ | |
984 | 0, /* rightshift */ | |
985 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
986 | 64, /* bitsize */ | |
b34976b6 | 987 | FALSE, /* pc_relative */ |
5bd4f169 AM |
988 | 0, /* bitpos */ |
989 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 990 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 991 | "R_PPC64_TOC", /* name */ |
b34976b6 | 992 | FALSE, /* partial_inplace */ |
5bd4f169 | 993 | 0, /* src_mask */ |
f5e87a1d | 994 | ONES (64), /* dst_mask */ |
b34976b6 | 995 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
996 | |
997 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
998 | value to relocate may (!) refer to a PLT entry which the link | |
999 | editor (a) may replace with the symbol value. If the link editor | |
1000 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1001 | entry and store the address to the new PLT entry in the GOT. | |
1002 | This permits lazy resolution of function symbols at run time. | |
1003 | The link editor may also skip all of this and just (c) emit a | |
1004 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1005 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1006 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1007 | 0, /* rightshift */ | |
1008 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1009 | 16, /* bitsize */ | |
b34976b6 | 1010 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1011 | 0, /* bitpos */ |
1012 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1013 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1014 | "R_PPC64_PLTGOT16", /* name */ |
1015 | FALSE, /* partial_inplace */ | |
1016 | 0, /* src_mask */ | |
1017 | 0xffff, /* dst_mask */ | |
1018 | FALSE), /* pcrel_offset */ | |
1019 | ||
1020 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1021 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1022 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1023 | 0, /* rightshift */ | |
1024 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1025 | 16, /* bitsize */ | |
1026 | FALSE, /* pc_relative */ | |
1027 | 0, /* bitpos */ | |
1028 | complain_overflow_dont, /* complain_on_overflow */ | |
1029 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1030 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1031 | FALSE, /* partial_inplace */ | |
1032 | 0, /* src_mask */ | |
1033 | 0xffff, /* dst_mask */ | |
1034 | FALSE), /* pcrel_offset */ | |
1035 | ||
1036 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1037 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1038 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1039 | 16, /* rightshift */ | |
1040 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1041 | 16, /* bitsize */ | |
1042 | FALSE, /* pc_relative */ | |
1043 | 0, /* bitpos */ | |
1044 | complain_overflow_dont, /* complain_on_overflow */ | |
1045 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1046 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1047 | FALSE, /* partial_inplace */ | |
1048 | 0, /* src_mask */ | |
1049 | 0xffff, /* dst_mask */ | |
1050 | FALSE), /* pcrel_offset */ | |
1051 | ||
1052 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1053 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1054 | is negative. */ | |
1055 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1056 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1057 | 16, /* rightshift */ | |
1058 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1059 | 16, /* bitsize */ | |
1060 | FALSE, /* pc_relative */ | |
1061 | 0, /* bitpos */ | |
1062 | complain_overflow_dont,/* complain_on_overflow */ | |
1063 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1064 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1065 | FALSE, /* partial_inplace */ | |
1066 | 0, /* src_mask */ | |
1067 | 0xffff, /* dst_mask */ | |
1068 | FALSE), /* pcrel_offset */ | |
1069 | ||
1070 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1071 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1072 | 0, /* rightshift */ | |
1073 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1074 | 16, /* bitsize */ | |
1075 | FALSE, /* pc_relative */ | |
1076 | 0, /* bitpos */ | |
1077 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1078 | bfd_elf_generic_reloc, /* special_function */ | |
1079 | "R_PPC64_ADDR16_DS", /* name */ | |
1080 | FALSE, /* partial_inplace */ | |
1081 | 0, /* src_mask */ | |
1082 | 0xfffc, /* dst_mask */ | |
1083 | FALSE), /* pcrel_offset */ | |
1084 | ||
1085 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1086 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1087 | 0, /* rightshift */ | |
1088 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1089 | 16, /* bitsize */ | |
1090 | FALSE, /* pc_relative */ | |
1091 | 0, /* bitpos */ | |
1092 | complain_overflow_dont,/* complain_on_overflow */ | |
1093 | bfd_elf_generic_reloc, /* special_function */ | |
1094 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1095 | FALSE, /* partial_inplace */ | |
1096 | 0, /* src_mask */ | |
1097 | 0xfffc, /* dst_mask */ | |
1098 | FALSE), /* pcrel_offset */ | |
1099 | ||
1100 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1101 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1102 | 0, /* rightshift */ | |
1103 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1104 | 16, /* bitsize */ | |
1105 | FALSE, /* pc_relative */ | |
1106 | 0, /* bitpos */ | |
1107 | complain_overflow_signed, /* complain_on_overflow */ | |
1108 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1109 | "R_PPC64_GOT16_DS", /* name */ | |
1110 | FALSE, /* partial_inplace */ | |
1111 | 0, /* src_mask */ | |
1112 | 0xfffc, /* dst_mask */ | |
1113 | FALSE), /* pcrel_offset */ | |
1114 | ||
1115 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1116 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1117 | 0, /* rightshift */ | |
1118 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1119 | 16, /* bitsize */ | |
1120 | FALSE, /* pc_relative */ | |
1121 | 0, /* bitpos */ | |
1122 | complain_overflow_dont, /* complain_on_overflow */ | |
1123 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1124 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1125 | FALSE, /* partial_inplace */ | |
1126 | 0, /* src_mask */ | |
1127 | 0xfffc, /* dst_mask */ | |
1128 | FALSE), /* pcrel_offset */ | |
1129 | ||
1130 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1131 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 16, /* bitsize */ | |
1135 | FALSE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
1137 | complain_overflow_dont, /* complain_on_overflow */ | |
1138 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1139 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0xfffc, /* dst_mask */ | |
1143 | FALSE), /* pcrel_offset */ | |
1144 | ||
1145 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1146 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1147 | 0, /* rightshift */ | |
1148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 16, /* bitsize */ | |
1150 | FALSE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1153 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1154 | "R_PPC64_SECTOFF_DS", /* name */ | |
1155 | FALSE, /* partial_inplace */ | |
1156 | 0, /* src_mask */ | |
1157 | 0xfffc, /* dst_mask */ | |
1158 | FALSE), /* pcrel_offset */ | |
1159 | ||
1160 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1161 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 16, /* bitsize */ | |
1165 | FALSE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_dont, /* complain_on_overflow */ | |
1168 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1169 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
1172 | 0xfffc, /* dst_mask */ | |
1173 | FALSE), /* pcrel_offset */ | |
1174 | ||
1175 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1176 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1177 | 0, /* rightshift */ | |
1178 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 16, /* bitsize */ | |
1180 | FALSE, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_signed, /* complain_on_overflow */ | |
1183 | ppc64_elf_toc_reloc, /* special_function */ | |
1184 | "R_PPC64_TOC16_DS", /* name */ | |
1185 | FALSE, /* partial_inplace */ | |
1186 | 0, /* src_mask */ | |
1187 | 0xfffc, /* dst_mask */ | |
1188 | FALSE), /* pcrel_offset */ | |
1189 | ||
1190 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1191 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1192 | 0, /* rightshift */ | |
1193 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1194 | 16, /* bitsize */ | |
1195 | FALSE, /* pc_relative */ | |
1196 | 0, /* bitpos */ | |
1197 | complain_overflow_dont, /* complain_on_overflow */ | |
1198 | ppc64_elf_toc_reloc, /* special_function */ | |
1199 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1200 | FALSE, /* partial_inplace */ | |
1201 | 0, /* src_mask */ | |
1202 | 0xfffc, /* dst_mask */ | |
1203 | FALSE), /* pcrel_offset */ | |
1204 | ||
1205 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1206 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1207 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1208 | 0, /* rightshift */ |
1209 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1210 | 16, /* bitsize */ | |
1211 | FALSE, /* pc_relative */ | |
1212 | 0, /* bitpos */ | |
1213 | complain_overflow_signed, /* complain_on_overflow */ | |
1214 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1215 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1216 | FALSE, /* partial_inplace */ | |
1217 | 0, /* src_mask */ | |
1218 | 0xfffc, /* dst_mask */ | |
1219 | FALSE), /* pcrel_offset */ | |
1220 | ||
1221 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1222 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1223 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1224 | 0, /* rightshift */ | |
1225 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1226 | 16, /* bitsize */ | |
1227 | FALSE, /* pc_relative */ | |
1228 | 0, /* bitpos */ | |
1229 | complain_overflow_dont, /* complain_on_overflow */ | |
1230 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1231 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1232 | FALSE, /* partial_inplace */ | |
1233 | 0, /* src_mask */ | |
1234 | 0xfffc, /* dst_mask */ | |
1235 | FALSE), /* pcrel_offset */ | |
1236 | ||
1237 | /* Marker reloc for TLS. */ | |
1238 | HOWTO (R_PPC64_TLS, | |
1239 | 0, /* rightshift */ | |
1240 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1241 | 32, /* bitsize */ | |
1242 | FALSE, /* pc_relative */ | |
1243 | 0, /* bitpos */ | |
1244 | complain_overflow_dont, /* complain_on_overflow */ | |
1245 | bfd_elf_generic_reloc, /* special_function */ | |
1246 | "R_PPC64_TLS", /* name */ | |
1247 | FALSE, /* partial_inplace */ | |
1248 | 0, /* src_mask */ | |
1249 | 0, /* dst_mask */ | |
1250 | FALSE), /* pcrel_offset */ | |
1251 | ||
1252 | /* Computes the load module index of the load module that contains the | |
1253 | definition of its TLS sym. */ | |
1254 | HOWTO (R_PPC64_DTPMOD64, | |
1255 | 0, /* rightshift */ | |
1256 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 64, /* bitsize */ | |
1258 | FALSE, /* pc_relative */ | |
1259 | 0, /* bitpos */ | |
1260 | complain_overflow_dont, /* complain_on_overflow */ | |
1261 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1262 | "R_PPC64_DTPMOD64", /* name */ | |
1263 | FALSE, /* partial_inplace */ | |
1264 | 0, /* src_mask */ | |
1265 | ONES (64), /* dst_mask */ | |
1266 | FALSE), /* pcrel_offset */ | |
1267 | ||
1268 | /* Computes a dtv-relative displacement, the difference between the value | |
1269 | of sym+add and the base address of the thread-local storage block that | |
1270 | contains the definition of sym, minus 0x8000. */ | |
1271 | HOWTO (R_PPC64_DTPREL64, | |
1272 | 0, /* rightshift */ | |
1273 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1274 | 64, /* bitsize */ | |
1275 | FALSE, /* pc_relative */ | |
1276 | 0, /* bitpos */ | |
1277 | complain_overflow_dont, /* complain_on_overflow */ | |
1278 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1279 | "R_PPC64_DTPREL64", /* name */ | |
1280 | FALSE, /* partial_inplace */ | |
1281 | 0, /* src_mask */ | |
1282 | ONES (64), /* dst_mask */ | |
1283 | FALSE), /* pcrel_offset */ | |
1284 | ||
1285 | /* A 16 bit dtprel reloc. */ | |
1286 | HOWTO (R_PPC64_DTPREL16, | |
1287 | 0, /* rightshift */ | |
1288 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1289 | 16, /* bitsize */ | |
1290 | FALSE, /* pc_relative */ | |
1291 | 0, /* bitpos */ | |
1292 | complain_overflow_signed, /* complain_on_overflow */ | |
1293 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1294 | "R_PPC64_DTPREL16", /* name */ | |
1295 | FALSE, /* partial_inplace */ | |
1296 | 0, /* src_mask */ | |
1297 | 0xffff, /* dst_mask */ | |
1298 | FALSE), /* pcrel_offset */ | |
1299 | ||
1300 | /* Like DTPREL16, but no overflow. */ | |
1301 | HOWTO (R_PPC64_DTPREL16_LO, | |
1302 | 0, /* rightshift */ | |
1303 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1304 | 16, /* 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_DTPREL16_LO", /* name */ | |
1310 | FALSE, /* partial_inplace */ | |
1311 | 0, /* src_mask */ | |
1312 | 0xffff, /* dst_mask */ | |
1313 | FALSE), /* pcrel_offset */ | |
1314 | ||
1315 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1316 | HOWTO (R_PPC64_DTPREL16_HI, | |
1317 | 16, /* rightshift */ | |
1318 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1319 | 16, /* bitsize */ | |
1320 | FALSE, /* pc_relative */ | |
1321 | 0, /* bitpos */ | |
1322 | complain_overflow_dont, /* complain_on_overflow */ | |
1323 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1324 | "R_PPC64_DTPREL16_HI", /* name */ | |
1325 | FALSE, /* partial_inplace */ | |
1326 | 0, /* src_mask */ | |
1327 | 0xffff, /* dst_mask */ | |
1328 | FALSE), /* pcrel_offset */ | |
1329 | ||
1330 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1331 | HOWTO (R_PPC64_DTPREL16_HA, | |
1332 | 16, /* 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_HA", /* name */ | |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0, /* src_mask */ | |
1342 | 0xffff, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
1345 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1346 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1347 | 32, /* 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_HIGHER", /* name */ | |
1355 | FALSE, /* partial_inplace */ | |
1356 | 0, /* src_mask */ | |
1357 | 0xffff, /* dst_mask */ | |
1358 | FALSE), /* pcrel_offset */ | |
1359 | ||
1360 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1361 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1362 | 32, /* 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_HIGHERA", /* name */ | |
1370 | FALSE, /* partial_inplace */ | |
1371 | 0, /* src_mask */ | |
1372 | 0xffff, /* dst_mask */ | |
1373 | FALSE), /* pcrel_offset */ | |
1374 | ||
1375 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1376 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1377 | 48, /* 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_HIGHEST", /* name */ | |
1385 | FALSE, /* partial_inplace */ | |
1386 | 0, /* src_mask */ | |
1387 | 0xffff, /* dst_mask */ | |
1388 | FALSE), /* pcrel_offset */ | |
1389 | ||
1390 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1391 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1392 | 48, /* 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_HIGHESTA", /* name */ | |
1400 | FALSE, /* partial_inplace */ | |
1401 | 0, /* src_mask */ | |
1402 | 0xffff, /* dst_mask */ | |
1403 | FALSE), /* pcrel_offset */ | |
1404 | ||
1405 | /* Like DTPREL16, but for insns with a DS field. */ | |
1406 | HOWTO (R_PPC64_DTPREL16_DS, | |
1407 | 0, /* rightshift */ | |
1408 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1409 | 16, /* bitsize */ | |
1410 | FALSE, /* pc_relative */ | |
1411 | 0, /* bitpos */ | |
1412 | complain_overflow_signed, /* complain_on_overflow */ | |
1413 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1414 | "R_PPC64_DTPREL16_DS", /* name */ | |
1415 | FALSE, /* partial_inplace */ | |
1416 | 0, /* src_mask */ | |
1417 | 0xfffc, /* dst_mask */ | |
1418 | FALSE), /* pcrel_offset */ | |
1419 | ||
1420 | /* Like DTPREL16_DS, but no overflow. */ | |
1421 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1422 | 0, /* 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_LO_DS", /* name */ | |
1430 | FALSE, /* partial_inplace */ | |
1431 | 0, /* src_mask */ | |
1432 | 0xfffc, /* dst_mask */ | |
1433 | FALSE), /* pcrel_offset */ | |
1434 | ||
1435 | /* Computes a tp-relative displacement, the difference between the value of | |
1436 | sym+add and the value of the thread pointer (r13). */ | |
1437 | HOWTO (R_PPC64_TPREL64, | |
1438 | 0, /* rightshift */ | |
1439 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1440 | 64, /* bitsize */ | |
1441 | FALSE, /* pc_relative */ | |
1442 | 0, /* bitpos */ | |
1443 | complain_overflow_dont, /* complain_on_overflow */ | |
1444 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1445 | "R_PPC64_TPREL64", /* name */ | |
1446 | FALSE, /* partial_inplace */ | |
1447 | 0, /* src_mask */ | |
1448 | ONES (64), /* dst_mask */ | |
1449 | FALSE), /* pcrel_offset */ | |
1450 | ||
1451 | /* A 16 bit tprel reloc. */ | |
1452 | HOWTO (R_PPC64_TPREL16, | |
1453 | 0, /* rightshift */ | |
1454 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1455 | 16, /* bitsize */ | |
1456 | FALSE, /* pc_relative */ | |
1457 | 0, /* bitpos */ | |
1458 | complain_overflow_signed, /* complain_on_overflow */ | |
1459 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1460 | "R_PPC64_TPREL16", /* name */ | |
1461 | FALSE, /* partial_inplace */ | |
1462 | 0, /* src_mask */ | |
1463 | 0xffff, /* dst_mask */ | |
1464 | FALSE), /* pcrel_offset */ | |
1465 | ||
1466 | /* Like TPREL16, but no overflow. */ | |
1467 | HOWTO (R_PPC64_TPREL16_LO, | |
1468 | 0, /* rightshift */ | |
1469 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1470 | 16, /* 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_TPREL16_LO", /* name */ | |
1476 | FALSE, /* partial_inplace */ | |
1477 | 0, /* src_mask */ | |
1478 | 0xffff, /* dst_mask */ | |
1479 | FALSE), /* pcrel_offset */ | |
1480 | ||
1481 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1482 | HOWTO (R_PPC64_TPREL16_HI, | |
1483 | 16, /* rightshift */ | |
1484 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1485 | 16, /* bitsize */ | |
1486 | FALSE, /* pc_relative */ | |
1487 | 0, /* bitpos */ | |
1488 | complain_overflow_dont, /* complain_on_overflow */ | |
1489 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1490 | "R_PPC64_TPREL16_HI", /* name */ | |
1491 | FALSE, /* partial_inplace */ | |
1492 | 0, /* src_mask */ | |
1493 | 0xffff, /* dst_mask */ | |
1494 | FALSE), /* pcrel_offset */ | |
1495 | ||
1496 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1497 | HOWTO (R_PPC64_TPREL16_HA, | |
1498 | 16, /* 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_HA", /* name */ | |
1506 | FALSE, /* partial_inplace */ | |
1507 | 0, /* src_mask */ | |
1508 | 0xffff, /* dst_mask */ | |
1509 | FALSE), /* pcrel_offset */ | |
1510 | ||
1511 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1512 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1513 | 32, /* 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_HIGHER", /* name */ | |
1521 | FALSE, /* partial_inplace */ | |
1522 | 0, /* src_mask */ | |
1523 | 0xffff, /* dst_mask */ | |
1524 | FALSE), /* pcrel_offset */ | |
1525 | ||
1526 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1527 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1528 | 32, /* 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_HIGHERA", /* name */ | |
1536 | FALSE, /* partial_inplace */ | |
1537 | 0, /* src_mask */ | |
1538 | 0xffff, /* dst_mask */ | |
1539 | FALSE), /* pcrel_offset */ | |
1540 | ||
1541 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1542 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1543 | 48, /* 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_HIGHEST", /* name */ | |
1551 | FALSE, /* partial_inplace */ | |
1552 | 0, /* src_mask */ | |
1553 | 0xffff, /* dst_mask */ | |
1554 | FALSE), /* pcrel_offset */ | |
1555 | ||
1556 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1557 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1558 | 48, /* 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_HIGHESTA", /* name */ | |
1566 | FALSE, /* partial_inplace */ | |
1567 | 0, /* src_mask */ | |
1568 | 0xffff, /* dst_mask */ | |
1569 | FALSE), /* pcrel_offset */ | |
1570 | ||
1571 | /* Like TPREL16, but for insns with a DS field. */ | |
1572 | HOWTO (R_PPC64_TPREL16_DS, | |
1573 | 0, /* rightshift */ | |
1574 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1575 | 16, /* bitsize */ | |
1576 | FALSE, /* pc_relative */ | |
1577 | 0, /* bitpos */ | |
1578 | complain_overflow_signed, /* complain_on_overflow */ | |
1579 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1580 | "R_PPC64_TPREL16_DS", /* name */ | |
1581 | FALSE, /* partial_inplace */ | |
1582 | 0, /* src_mask */ | |
1583 | 0xfffc, /* dst_mask */ | |
1584 | FALSE), /* pcrel_offset */ | |
1585 | ||
1586 | /* Like TPREL16_DS, but no overflow. */ | |
1587 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1588 | 0, /* 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_LO_DS", /* name */ | |
1596 | FALSE, /* partial_inplace */ | |
1597 | 0, /* src_mask */ | |
1598 | 0xfffc, /* dst_mask */ | |
1599 | FALSE), /* pcrel_offset */ | |
1600 | ||
1601 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1602 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1603 | to the first entry relative to the TOC base (r2). */ | |
1604 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1605 | 0, /* rightshift */ | |
1606 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1607 | 16, /* bitsize */ | |
1608 | FALSE, /* pc_relative */ | |
1609 | 0, /* bitpos */ | |
1610 | complain_overflow_signed, /* complain_on_overflow */ | |
1611 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1612 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1613 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1614 | 0, /* src_mask */ |
1615 | 0xffff, /* dst_mask */ | |
b34976b6 | 1616 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1617 | |
411e1bfb AM |
1618 | /* Like GOT_TLSGD16, but no overflow. */ |
1619 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1620 | 0, /* rightshift */ |
1621 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1622 | 16, /* bitsize */ | |
b34976b6 | 1623 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1624 | 0, /* bitpos */ |
1625 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1626 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1627 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1628 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1629 | 0, /* src_mask */ |
1630 | 0xffff, /* dst_mask */ | |
b34976b6 | 1631 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1632 | |
411e1bfb AM |
1633 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1634 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1635 | 16, /* rightshift */ |
1636 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1637 | 16, /* bitsize */ | |
b34976b6 | 1638 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1639 | 0, /* bitpos */ |
1640 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1641 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1642 | "R_PPC64_GOT_TLSGD16_HI", /* 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_HI, but adjust for low 16 bits. */ |
1649 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1650 | 16, /* rightshift */ |
1651 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1652 | 16, /* bitsize */ | |
b34976b6 | 1653 | FALSE, /* pc_relative */ |
5bd4f169 | 1654 | 0, /* bitpos */ |
411e1bfb | 1655 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1656 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1657 | "R_PPC64_GOT_TLSGD16_HA", /* 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 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1664 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1665 | first entry relative to the TOC base (r2). */ | |
1666 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1667 | 0, /* rightshift */ |
1668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1669 | 16, /* bitsize */ | |
b34976b6 | 1670 | FALSE, /* pc_relative */ |
5bd4f169 | 1671 | 0, /* bitpos */ |
411e1bfb AM |
1672 | complain_overflow_signed, /* complain_on_overflow */ |
1673 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1674 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1675 | FALSE, /* partial_inplace */ |
d006db6c | 1676 | 0, /* src_mask */ |
411e1bfb | 1677 | 0xffff, /* dst_mask */ |
b34976b6 | 1678 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1679 | |
411e1bfb AM |
1680 | /* Like GOT_TLSLD16, but no overflow. */ |
1681 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1682 | 0, /* rightshift */ |
1683 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1684 | 16, /* bitsize */ | |
b34976b6 | 1685 | FALSE, /* pc_relative */ |
5bd4f169 | 1686 | 0, /* bitpos */ |
411e1bfb AM |
1687 | complain_overflow_dont, /* complain_on_overflow */ |
1688 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1689 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1690 | FALSE, /* partial_inplace */ |
d006db6c | 1691 | 0, /* src_mask */ |
411e1bfb | 1692 | 0xffff, /* dst_mask */ |
b34976b6 | 1693 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1694 | |
411e1bfb AM |
1695 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1696 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1697 | 16, /* rightshift */ | |
5bd4f169 AM |
1698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1699 | 16, /* bitsize */ | |
b34976b6 | 1700 | FALSE, /* pc_relative */ |
5bd4f169 | 1701 | 0, /* bitpos */ |
411e1bfb | 1702 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1703 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1704 | "R_PPC64_GOT_TLSLD16_HI", /* 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_HI, but adjust for low 16 bits. */ |
1711 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1712 | 16, /* rightshift */ | |
5bd4f169 AM |
1713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1714 | 16, /* bitsize */ | |
b34976b6 | 1715 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1716 | 0, /* bitpos */ |
1717 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1718 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1719 | "R_PPC64_GOT_TLSLD16_HA", /* 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 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1726 | the offset to the entry relative to the TOC base (r2). */ | |
1727 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1728 | 0, /* rightshift */ |
1729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1730 | 16, /* bitsize */ | |
b34976b6 | 1731 | FALSE, /* pc_relative */ |
5bd4f169 | 1732 | 0, /* bitpos */ |
411e1bfb | 1733 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1734 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1735 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1736 | FALSE, /* partial_inplace */ |
d006db6c | 1737 | 0, /* src_mask */ |
5bd4f169 | 1738 | 0xfffc, /* dst_mask */ |
b34976b6 | 1739 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1740 | |
411e1bfb AM |
1741 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1742 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1743 | 0, /* rightshift */ |
c061c2d8 AM |
1744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1745 | 16, /* bitsize */ | |
b34976b6 | 1746 | FALSE, /* pc_relative */ |
5bd4f169 | 1747 | 0, /* bitpos */ |
411e1bfb AM |
1748 | complain_overflow_dont, /* complain_on_overflow */ |
1749 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1750 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1751 | FALSE, /* partial_inplace */ |
d006db6c | 1752 | 0, /* src_mask */ |
c061c2d8 | 1753 | 0xfffc, /* dst_mask */ |
b34976b6 | 1754 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1755 | |
411e1bfb AM |
1756 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1757 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1758 | 16, /* rightshift */ | |
5bd4f169 AM |
1759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1760 | 16, /* bitsize */ | |
b34976b6 | 1761 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1762 | 0, /* bitpos */ |
1763 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1764 | ppc64_elf_unhandled_reloc, /* special_function */ |
1765 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1766 | FALSE, /* partial_inplace */ |
d006db6c | 1767 | 0, /* src_mask */ |
411e1bfb | 1768 | 0xffff, /* dst_mask */ |
b34976b6 | 1769 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1770 | |
411e1bfb AM |
1771 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1772 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1773 | 16, /* rightshift */ | |
1774 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1775 | 16, /* bitsize */ | |
1776 | FALSE, /* pc_relative */ | |
1777 | 0, /* bitpos */ | |
1778 | complain_overflow_dont, /* complain_on_overflow */ | |
1779 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1780 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1781 | FALSE, /* partial_inplace */ | |
1782 | 0, /* src_mask */ | |
1783 | 0xffff, /* dst_mask */ | |
1784 | FALSE), /* pcrel_offset */ | |
1785 | ||
1786 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1787 | offset to the entry relative to the TOC base (r2). */ | |
1788 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1789 | 0, /* rightshift */ |
1790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1791 | 16, /* bitsize */ | |
b34976b6 | 1792 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1793 | 0, /* bitpos */ |
1794 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1795 | ppc64_elf_unhandled_reloc, /* special_function */ |
1796 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1797 | FALSE, /* partial_inplace */ |
d006db6c | 1798 | 0, /* src_mask */ |
ad8e1ba5 | 1799 | 0xfffc, /* dst_mask */ |
b34976b6 | 1800 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1801 | |
411e1bfb AM |
1802 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1803 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1804 | 0, /* rightshift */ |
1805 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1806 | 16, /* bitsize */ | |
b34976b6 | 1807 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1808 | 0, /* bitpos */ |
1809 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1810 | ppc64_elf_unhandled_reloc, /* special_function */ |
1811 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1812 | FALSE, /* partial_inplace */ |
d006db6c | 1813 | 0, /* src_mask */ |
ad8e1ba5 | 1814 | 0xfffc, /* dst_mask */ |
b34976b6 | 1815 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1816 | |
411e1bfb AM |
1817 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1818 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1819 | 16, /* rightshift */ | |
5bd4f169 AM |
1820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1821 | 16, /* bitsize */ | |
b34976b6 | 1822 | FALSE, /* pc_relative */ |
5bd4f169 | 1823 | 0, /* bitpos */ |
411e1bfb | 1824 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1825 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1826 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1827 | FALSE, /* partial_inplace */ |
d006db6c | 1828 | 0, /* src_mask */ |
411e1bfb | 1829 | 0xffff, /* dst_mask */ |
b34976b6 | 1830 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1831 | |
411e1bfb AM |
1832 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1833 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1834 | 16, /* rightshift */ | |
5bd4f169 AM |
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 */ | |
805fc799 | 1840 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1841 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1842 | FALSE, /* partial_inplace */ |
d006db6c | 1843 | 0, /* src_mask */ |
411e1bfb | 1844 | 0xffff, /* dst_mask */ |
b34976b6 | 1845 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1846 | |
1847 | /* GNU extension to record C++ vtable hierarchy. */ | |
1848 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1849 | 0, /* rightshift */ | |
1850 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1851 | 0, /* bitsize */ | |
b34976b6 | 1852 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1853 | 0, /* bitpos */ |
1854 | complain_overflow_dont, /* complain_on_overflow */ | |
1855 | NULL, /* special_function */ | |
1856 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1857 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1858 | 0, /* src_mask */ |
1859 | 0, /* dst_mask */ | |
b34976b6 | 1860 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1861 | |
1862 | /* GNU extension to record C++ vtable member usage. */ | |
1863 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1864 | 0, /* rightshift */ | |
1865 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1866 | 0, /* bitsize */ | |
b34976b6 | 1867 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1868 | 0, /* bitpos */ |
1869 | complain_overflow_dont, /* complain_on_overflow */ | |
1870 | NULL, /* special_function */ | |
1871 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1872 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1873 | 0, /* src_mask */ |
1874 | 0, /* dst_mask */ | |
b34976b6 | 1875 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1876 | }; |
1877 | ||
1878 | \f | |
1879 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1880 | be done. */ | |
1881 | ||
1882 | static void | |
4ce794b7 | 1883 | ppc_howto_init (void) |
5bd4f169 AM |
1884 | { |
1885 | unsigned int i, type; | |
1886 | ||
1887 | for (i = 0; | |
1888 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1889 | i++) | |
1890 | { | |
1891 | type = ppc64_elf_howto_raw[i].type; | |
1892 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1893 | / sizeof (ppc64_elf_howto_table[0]))); | |
1894 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | static reloc_howto_type * | |
4ce794b7 AM |
1899 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1900 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1901 | { |
411e1bfb | 1902 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1903 | |
1904 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1905 | /* Initialize howto table if needed. */ | |
1906 | ppc_howto_init (); | |
1907 | ||
4ce794b7 | 1908 | switch (code) |
5bd4f169 AM |
1909 | { |
1910 | default: | |
4ce794b7 | 1911 | return NULL; |
5bd4f169 | 1912 | |
411e1bfb AM |
1913 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1914 | break; | |
1915 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1916 | break; | |
1917 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1918 | break; | |
1919 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1920 | break; | |
1921 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1922 | break; | |
1923 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1924 | break; | |
1925 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2018 | break; |
411e1bfb | 2019 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2020 | break; |
411e1bfb | 2021 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2022 | break; |
411e1bfb | 2023 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2024 | break; |
411e1bfb | 2025 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2026 | break; |
411e1bfb | 2027 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2028 | break; |
411e1bfb | 2029 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2030 | break; |
411e1bfb | 2031 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2032 | break; |
411e1bfb | 2033 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2034 | break; |
411e1bfb | 2035 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2036 | break; |
411e1bfb | 2037 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2038 | break; |
411e1bfb | 2039 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2040 | break; |
411e1bfb | 2041 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2042 | break; |
411e1bfb | 2043 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2044 | break; |
411e1bfb AM |
2045 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2046 | break; | |
2047 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2082 | break; | |
2083 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2084 | break; | |
2085 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2086 | break; | |
2087 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2088 | break; | |
2089 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2090 | break; | |
2091 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2092 | break; | |
2093 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2094 | break; | |
2095 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2096 | break; | |
2097 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2098 | break; | |
2099 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2100 | break; | |
2101 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2102 | break; | |
2103 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2104 | break; | |
2105 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2106 | break; | |
2107 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2108 | break; | |
2109 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2110 | break; | |
2111 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2112 | break; | |
2113 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2114 | break; |
2115 | } | |
2116 | ||
4ce794b7 | 2117 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2118 | }; |
2119 | ||
157090f7 AM |
2120 | static reloc_howto_type * |
2121 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2122 | const char *r_name) | |
2123 | { | |
2124 | unsigned int i; | |
2125 | ||
2126 | for (i = 0; | |
2127 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2128 | i++) | |
2129 | if (ppc64_elf_howto_raw[i].name != NULL | |
2130 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2131 | return &ppc64_elf_howto_raw[i]; | |
2132 | ||
2133 | return NULL; | |
2134 | } | |
2135 | ||
5bd4f169 AM |
2136 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2137 | ||
2138 | static void | |
4ce794b7 AM |
2139 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2140 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2141 | { |
65f38f15 AM |
2142 | unsigned int type; |
2143 | ||
ef60b7ff | 2144 | /* Initialize howto table if needed. */ |
5bd4f169 | 2145 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2146 | ppc_howto_init (); |
2147 | ||
65f38f15 | 2148 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2149 | if (type >= (sizeof (ppc64_elf_howto_table) |
2150 | / sizeof (ppc64_elf_howto_table[0]))) | |
2151 | { | |
2152 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2153 | abfd, (int) type); |
2154 | type = R_PPC64_NONE; | |
d0fb9a8d | 2155 | } |
65f38f15 | 2156 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2157 | } |
2158 | ||
04c9666a | 2159 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2160 | |
2161 | static bfd_reloc_status_type | |
4ce794b7 AM |
2162 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2163 | void *data, asection *input_section, | |
2164 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2165 | { |
805fc799 AM |
2166 | /* If this is a relocatable link (output_bfd test tells us), just |
2167 | call the generic function. Any adjustment will be done at final | |
2168 | link time. */ | |
2169 | if (output_bfd != NULL) | |
cedb70c5 | 2170 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2171 | input_section, output_bfd, error_message); |
2172 | ||
2173 | /* Adjust the addend for sign extension of the low 16 bits. | |
2174 | We won't actually be using the low 16 bits, so trashing them | |
2175 | doesn't matter. */ | |
2176 | reloc_entry->addend += 0x8000; | |
2177 | return bfd_reloc_continue; | |
2178 | } | |
5bd4f169 | 2179 | |
2441e016 AM |
2180 | static bfd_reloc_status_type |
2181 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2182 | void *data, asection *input_section, | |
2183 | bfd *output_bfd, char **error_message) | |
2184 | { | |
2185 | if (output_bfd != NULL) | |
2186 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2187 | input_section, output_bfd, error_message); | |
2188 | ||
699733f6 AM |
2189 | if (strcmp (symbol->section->name, ".opd") == 0 |
2190 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2191 | { |
2192 | bfd_vma dest = opd_entry_value (symbol->section, | |
2193 | symbol->value + reloc_entry->addend, | |
2194 | NULL, NULL); | |
2195 | if (dest != (bfd_vma) -1) | |
2196 | reloc_entry->addend = dest - (symbol->value | |
2197 | + symbol->section->output_section->vma | |
2198 | + symbol->section->output_offset); | |
2199 | } | |
2200 | return bfd_reloc_continue; | |
2201 | } | |
2202 | ||
805fc799 | 2203 | static bfd_reloc_status_type |
4ce794b7 AM |
2204 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2205 | void *data, asection *input_section, | |
2206 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2207 | { |
2208 | long insn; | |
04c9666a | 2209 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2210 | bfd_size_type octets; |
2211 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2212 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2213 | |
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. */ | |
5bd4f169 | 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 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2222 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2223 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2224 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2225 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2226 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2227 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2228 | |
2229 | if (is_power4) | |
5bd4f169 | 2230 | { |
805fc799 AM |
2231 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2232 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2233 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2234 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2235 | insn |= 0x02 << 21; | |
2236 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2237 | insn |= 0x08 << 21; | |
2238 | else | |
2441e016 | 2239 | goto out; |
5bd4f169 | 2240 | } |
805fc799 AM |
2241 | else |
2242 | { | |
2243 | bfd_vma target = 0; | |
2244 | bfd_vma from; | |
5bd4f169 | 2245 | |
805fc799 AM |
2246 | if (!bfd_is_com_section (symbol->section)) |
2247 | target = symbol->value; | |
2248 | target += symbol->section->output_section->vma; | |
2249 | target += symbol->section->output_offset; | |
2250 | target += reloc_entry->addend; | |
5bd4f169 | 2251 | |
805fc799 AM |
2252 | from = (reloc_entry->address |
2253 | + input_section->output_offset | |
2254 | + input_section->output_section->vma); | |
5bd4f169 | 2255 | |
805fc799 AM |
2256 | /* Invert 'y' bit if not the default. */ |
2257 | if ((bfd_signed_vma) (target - from) < 0) | |
2258 | insn ^= 0x01 << 21; | |
2259 | } | |
4ce794b7 | 2260 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2261 | out: |
2262 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2263 | input_section, output_bfd, error_message); | |
805fc799 | 2264 | } |
5bd4f169 | 2265 | |
805fc799 | 2266 | static bfd_reloc_status_type |
4ce794b7 AM |
2267 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2268 | void *data, asection *input_section, | |
2269 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2270 | { |
2271 | /* If this is a relocatable link (output_bfd test tells us), just | |
2272 | call the generic function. Any adjustment will be done at final | |
2273 | link time. */ | |
2274 | if (output_bfd != NULL) | |
cedb70c5 | 2275 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2276 | input_section, output_bfd, error_message); |
5bd4f169 | 2277 | |
805fc799 AM |
2278 | /* Subtract the symbol section base address. */ |
2279 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2280 | return bfd_reloc_continue; |
2281 | } | |
2282 | ||
805fc799 | 2283 | static bfd_reloc_status_type |
4ce794b7 AM |
2284 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2285 | void *data, asection *input_section, | |
2286 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2287 | { |
2288 | /* If this is a relocatable link (output_bfd test tells us), just | |
2289 | call the generic function. Any adjustment will be done at final | |
2290 | link time. */ | |
2291 | if (output_bfd != NULL) | |
cedb70c5 | 2292 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2293 | input_section, output_bfd, error_message); |
2294 | ||
2295 | /* Subtract the symbol section base address. */ | |
2296 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2297 | ||
2298 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2299 | reloc_entry->addend += 0x8000; | |
2300 | return bfd_reloc_continue; | |
2301 | } | |
2302 | ||
2303 | static bfd_reloc_status_type | |
4ce794b7 AM |
2304 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2305 | void *data, asection *input_section, | |
2306 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2307 | { |
2308 | bfd_vma TOCstart; | |
2309 | ||
2310 | /* If this is a relocatable link (output_bfd test tells us), just | |
2311 | call the generic function. Any adjustment will be done at final | |
2312 | link time. */ | |
2313 | if (output_bfd != NULL) | |
cedb70c5 | 2314 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2315 | input_section, output_bfd, error_message); |
2316 | ||
2317 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2318 | if (TOCstart == 0) | |
2319 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2320 | ||
2321 | /* Subtract the TOC base address. */ | |
2322 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2323 | return bfd_reloc_continue; | |
2324 | } | |
2325 | ||
2326 | static bfd_reloc_status_type | |
4ce794b7 AM |
2327 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2328 | void *data, asection *input_section, | |
2329 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2330 | { |
2331 | bfd_vma TOCstart; | |
2332 | ||
2333 | /* If this is a relocatable link (output_bfd test tells us), just | |
2334 | call the generic function. Any adjustment will be done at final | |
2335 | link time. */ | |
2336 | if (output_bfd != NULL) | |
cedb70c5 | 2337 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2338 | input_section, output_bfd, error_message); |
2339 | ||
2340 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2341 | if (TOCstart == 0) | |
2342 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2343 | ||
2344 | /* Subtract the TOC base address. */ | |
2345 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2346 | ||
2347 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2348 | reloc_entry->addend += 0x8000; | |
2349 | return bfd_reloc_continue; | |
2350 | } | |
2351 | ||
2352 | static bfd_reloc_status_type | |
4ce794b7 AM |
2353 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2354 | void *data, asection *input_section, | |
2355 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2356 | { |
2357 | bfd_vma TOCstart; | |
2358 | bfd_size_type octets; | |
2359 | ||
2360 | /* If this is a relocatable link (output_bfd test tells us), just | |
2361 | call the generic function. Any adjustment will be done at final | |
2362 | link time. */ | |
2363 | if (output_bfd != NULL) | |
cedb70c5 | 2364 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2365 | input_section, output_bfd, error_message); |
2366 | ||
2367 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2368 | if (TOCstart == 0) | |
2369 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2370 | ||
2371 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2372 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2373 | return bfd_reloc_ok; | |
2374 | } | |
2375 | ||
2376 | static bfd_reloc_status_type | |
4ce794b7 AM |
2377 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2378 | void *data, asection *input_section, | |
2379 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
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 | if (error_message != NULL) | |
2389 | { | |
2390 | static char buf[60]; | |
2391 | sprintf (buf, "generic linker can't handle %s", | |
2392 | reloc_entry->howto->name); | |
2393 | *error_message = buf; | |
2394 | } | |
2395 | return bfd_reloc_dangerous; | |
2396 | } | |
2397 | ||
e717da7e AM |
2398 | struct ppc64_elf_obj_tdata |
2399 | { | |
2400 | struct elf_obj_tdata elf; | |
2401 | ||
2402 | /* Shortcuts to dynamic linker sections. */ | |
2403 | asection *got; | |
2404 | asection *relgot; | |
2405 | ||
b3fac117 AM |
2406 | /* Used during garbage collection. We attach global symbols defined |
2407 | on removed .opd entries to this section so that the sym is removed. */ | |
2408 | asection *deleted_section; | |
81688140 | 2409 | |
e717da7e AM |
2410 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2411 | sections means we potentially need one of these for each input bfd. */ | |
2412 | union { | |
2413 | bfd_signed_vma refcount; | |
2414 | bfd_vma offset; | |
2415 | } tlsld_got; | |
8860955f AM |
2416 | |
2417 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2418 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2419 | }; |
2420 | ||
2421 | #define ppc64_elf_tdata(bfd) \ | |
2422 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2423 | ||
2424 | #define ppc64_tlsld_got(bfd) \ | |
2425 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2426 | ||
2427 | /* Override the generic function because we store some extras. */ | |
2428 | ||
2429 | static bfd_boolean | |
2430 | ppc64_elf_mkobject (bfd *abfd) | |
2431 | { | |
e717da7e | 2432 | if (abfd->tdata.any == NULL) |
62d7a5f6 AM |
2433 | { |
2434 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2435 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2436 | if (abfd->tdata.any == NULL) | |
2437 | return FALSE; | |
2438 | } | |
2439 | return bfd_elf_mkobject (abfd); | |
e717da7e AM |
2440 | } |
2441 | ||
ee75fd95 AM |
2442 | /* Return 1 if target is one of ours. */ |
2443 | ||
7b53ace3 | 2444 | static bfd_boolean |
ee75fd95 | 2445 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2446 | { |
2447 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2448 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2449 | ||
2450 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2451 | } | |
2452 | ||
feee612b AM |
2453 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2454 | default is 32 bit. */ | |
2455 | ||
b34976b6 | 2456 | static bfd_boolean |
4ce794b7 | 2457 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2458 | { |
2459 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2460 | { | |
2461 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2462 | ||
2463 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2464 | { | |
2465 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2466 | abfd->arch_info = abfd->arch_info->next; | |
2467 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2468 | } | |
2469 | } | |
b34976b6 | 2470 | return TRUE; |
feee612b AM |
2471 | } |
2472 | ||
d37c89e5 AM |
2473 | /* Support for core dump NOTE sections. */ |
2474 | ||
2475 | static bfd_boolean | |
2476 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2477 | { | |
eea6121a | 2478 | size_t offset, size; |
d37c89e5 AM |
2479 | |
2480 | if (note->descsz != 504) | |
2481 | return FALSE; | |
2482 | ||
2483 | /* pr_cursig */ | |
2484 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2485 | ||
2486 | /* pr_pid */ | |
2487 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2488 | ||
2489 | /* pr_reg */ | |
2490 | offset = 112; | |
eea6121a | 2491 | size = 384; |
d37c89e5 AM |
2492 | |
2493 | /* Make a ".reg/999" section. */ | |
2494 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2495 | size, note->descpos + offset); |
d37c89e5 AM |
2496 | } |
2497 | ||
2498 | static bfd_boolean | |
2499 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2500 | { | |
2501 | if (note->descsz != 136) | |
2502 | return FALSE; | |
2503 | ||
2504 | elf_tdata (abfd)->core_program | |
2505 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2506 | elf_tdata (abfd)->core_command | |
2507 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2508 | ||
2509 | return TRUE; | |
2510 | } | |
2511 | ||
183e98be AM |
2512 | static char * |
2513 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2514 | ...) | |
2515 | { | |
2516 | switch (note_type) | |
2517 | { | |
2518 | default: | |
2519 | return NULL; | |
2520 | ||
2521 | case NT_PRPSINFO: | |
2522 | { | |
2523 | char data[136]; | |
2524 | va_list ap; | |
2525 | ||
2526 | va_start (ap, note_type); | |
2527 | memset (data, 0, 40); | |
2528 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2529 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2530 | va_end (ap); | |
2531 | return elfcore_write_note (abfd, buf, bufsiz, | |
2532 | "CORE", note_type, data, sizeof (data)); | |
2533 | } | |
2534 | ||
2535 | case NT_PRSTATUS: | |
2536 | { | |
2537 | char data[504]; | |
2538 | va_list ap; | |
2539 | long pid; | |
2540 | int cursig; | |
2541 | const void *greg; | |
2542 | ||
2543 | va_start (ap, note_type); | |
2544 | memset (data, 0, 112); | |
2545 | pid = va_arg (ap, long); | |
2546 | bfd_put_32 (abfd, pid, data + 32); | |
2547 | cursig = va_arg (ap, int); | |
2548 | bfd_put_16 (abfd, cursig, data + 12); | |
2549 | greg = va_arg (ap, const void *); | |
2550 | memcpy (data + 112, greg, 384); | |
2551 | memset (data + 496, 0, 8); | |
2552 | va_end (ap); | |
2553 | return elfcore_write_note (abfd, buf, bufsiz, | |
2554 | "CORE", note_type, data, sizeof (data)); | |
2555 | } | |
2556 | } | |
2557 | } | |
2558 | ||
5bd4f169 AM |
2559 | /* Merge backend specific data from an object file to the output |
2560 | object file when linking. */ | |
2f6d9989 | 2561 | |
b34976b6 | 2562 | static bfd_boolean |
4ce794b7 | 2563 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2564 | { |
5bd4f169 AM |
2565 | /* Check if we have the same endianess. */ |
2566 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2567 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2568 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2569 | { | |
2570 | const char *msg; | |
2571 | ||
2572 | if (bfd_big_endian (ibfd)) | |
d003868e | 2573 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2574 | "and target is little endian"); |
5bd4f169 | 2575 | else |
d003868e | 2576 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2577 | "and target is big endian"); |
5bd4f169 | 2578 | |
d003868e | 2579 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2580 | |
2581 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2582 | return FALSE; |
5bd4f169 AM |
2583 | } |
2584 | ||
b34976b6 | 2585 | return TRUE; |
5bd4f169 | 2586 | } |
f0abc2a1 | 2587 | |
5d35169e AM |
2588 | /* Add extra PPC sections. */ |
2589 | ||
b35d266b | 2590 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2591 | { |
0112cd26 NC |
2592 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2593 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2594 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2595 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2596 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2597 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2598 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2599 | }; |
2600 | ||
7c8fe5c4 AM |
2601 | enum _ppc64_sec_type { |
2602 | sec_normal = 0, | |
2603 | sec_opd = 1, | |
2604 | sec_toc = 2 | |
2605 | }; | |
2606 | ||
f0abc2a1 AM |
2607 | struct _ppc64_elf_section_data |
2608 | { | |
2609 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2610 | |
2611 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2612 | union |
2613 | { | |
411e1bfb | 2614 | /* Points to the function code section for local opd entries. */ |
7c8fe5c4 | 2615 | asection **opd_func_sec; |
411e1bfb | 2616 | /* After editing .opd, adjust references to opd local syms. */ |
7c8fe5c4 AM |
2617 | long *opd_adjust; |
2618 | ||
2619 | /* An array for toc sections, indexed by offset/8. | |
2620 | Specifies the relocation symbol index used at a given toc offset. */ | |
2621 | unsigned *t_symndx; | |
2622 | } u; | |
2623 | ||
2624 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2625 | |
7c8fe5c4 AM |
2626 | /* Flag set when small branches are detected. Used to |
2627 | select suitable defaults for the stub group size. */ | |
2628 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2629 | }; |
2630 | ||
2631 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2632 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2633 | |
2634 | static bfd_boolean | |
4ce794b7 | 2635 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2636 | { |
f592407e AM |
2637 | if (!sec->used_by_bfd) |
2638 | { | |
2639 | struct _ppc64_elf_section_data *sdata; | |
2640 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2641 | |
f592407e AM |
2642 | sdata = bfd_zalloc (abfd, amt); |
2643 | if (sdata == NULL) | |
2644 | return FALSE; | |
2645 | sec->used_by_bfd = sdata; | |
2646 | } | |
f0abc2a1 AM |
2647 | |
2648 | return _bfd_elf_new_section_hook (abfd, sec); | |
2649 | } | |
4025353c AM |
2650 | |
2651 | static void * | |
2652 | get_opd_info (asection * sec) | |
2653 | { | |
2654 | if (sec != NULL | |
2655 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 AM |
2656 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
2657 | return ppc64_elf_section_data (sec)->u.opd_adjust; | |
4025353c AM |
2658 | return NULL; |
2659 | } | |
90e3cdf2 JJ |
2660 | \f |
2661 | /* Parameters for the qsort hook. */ | |
2662 | static asection *synthetic_opd; | |
2663 | static bfd_boolean synthetic_relocatable; | |
2664 | ||
699733f6 | 2665 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2666 | |
2667 | static int | |
2668 | compare_symbols (const void *ap, const void *bp) | |
2669 | { | |
2670 | const asymbol *a = * (const asymbol **) ap; | |
2671 | const asymbol *b = * (const asymbol **) bp; | |
2672 | ||
699733f6 AM |
2673 | /* Section symbols first. */ |
2674 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2675 | return -1; |
699733f6 | 2676 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2677 | return 1; |
2678 | ||
699733f6 | 2679 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2680 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2681 | return -1; | |
2682 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2683 | return 1; | |
2684 | ||
699733f6 | 2685 | /* then other code symbols. */ |
90e3cdf2 JJ |
2686 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2687 | == (SEC_CODE | SEC_ALLOC) | |
2688 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2689 | != (SEC_CODE | SEC_ALLOC)) | |
2690 | return -1; | |
2691 | ||
2692 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2693 | != (SEC_CODE | SEC_ALLOC) | |
2694 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2695 | == (SEC_CODE | SEC_ALLOC)) | |
2696 | return 1; | |
2697 | ||
2698 | if (synthetic_relocatable) | |
2699 | { | |
2700 | if (a->section->id < b->section->id) | |
2701 | return -1; | |
2702 | ||
2703 | if (a->section->id > b->section->id) | |
2704 | return 1; | |
2705 | } | |
2706 | ||
2707 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2708 | return -1; | |
2709 | ||
2710 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2711 | return 1; | |
2712 | ||
4d35a0aa AM |
2713 | /* For syms with the same value, prefer strong dynamic global function |
2714 | syms over other syms. */ | |
2715 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2716 | return -1; | |
2717 | ||
2718 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2719 | return 1; | |
2720 | ||
2721 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2722 | return -1; | |
2723 | ||
2724 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2725 | return 1; | |
2726 | ||
2727 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2728 | return -1; | |
2729 | ||
2730 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2731 | return 1; | |
2732 | ||
2733 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2734 | return -1; | |
2735 | ||
2736 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2737 | return 1; | |
2738 | ||
90e3cdf2 JJ |
2739 | return 0; |
2740 | } | |
2741 | ||
699733f6 | 2742 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2743 | |
699733f6 AM |
2744 | static asymbol * |
2745 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2746 | { |
699733f6 | 2747 | long mid; |
90e3cdf2 | 2748 | |
699733f6 AM |
2749 | if (id == -1) |
2750 | { | |
2751 | while (lo < hi) | |
2752 | { | |
2753 | mid = (lo + hi) >> 1; | |
2754 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2755 | lo = mid + 1; | |
2756 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2757 | hi = mid; | |
2758 | else | |
2759 | return syms[mid]; | |
2760 | } | |
2761 | } | |
2762 | else | |
2763 | { | |
2764 | while (lo < hi) | |
2765 | { | |
2766 | mid = (lo + hi) >> 1; | |
2767 | if (syms[mid]->section->id < id) | |
2768 | lo = mid + 1; | |
2769 | else if (syms[mid]->section->id > id) | |
2770 | hi = mid; | |
2771 | else if (syms[mid]->value < value) | |
2772 | lo = mid + 1; | |
2773 | else if (syms[mid]->value > value) | |
2774 | hi = mid; | |
2775 | else | |
2776 | return syms[mid]; | |
2777 | } | |
2778 | } | |
2779 | return NULL; | |
90e3cdf2 JJ |
2780 | } |
2781 | ||
699733f6 AM |
2782 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2783 | entry syms. */ | |
90e3cdf2 JJ |
2784 | |
2785 | static long | |
a7535cf3 AM |
2786 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2787 | long static_count, asymbol **static_syms, | |
2788 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2789 | asymbol **ret) |
90e3cdf2 JJ |
2790 | { |
2791 | asymbol *s; | |
699733f6 AM |
2792 | long i; |
2793 | long count; | |
90e3cdf2 | 2794 | char *names; |
a7535cf3 | 2795 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2796 | asection *opd; |
90e3cdf2 | 2797 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2798 | asymbol **syms; |
90e3cdf2 JJ |
2799 | |
2800 | *ret = NULL; | |
2801 | ||
2802 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2803 | if (opd == NULL) | |
2804 | return 0; | |
2805 | ||
a7535cf3 | 2806 | symcount = static_count; |
c9727e01 | 2807 | if (!relocatable) |
a7535cf3 | 2808 | symcount += dyn_count; |
90e3cdf2 | 2809 | if (symcount == 0) |
c9727e01 | 2810 | return 0; |
90e3cdf2 | 2811 | |
a7535cf3 AM |
2812 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2813 | if (syms == NULL) | |
7356fed5 | 2814 | return -1; |
a7535cf3 AM |
2815 | |
2816 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2817 | { | |
2818 | /* Use both symbol tables. */ | |
2819 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2820 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2821 | } | |
2822 | else if (!relocatable && static_count == 0) | |
2823 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2824 | else | |
2825 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2826 | ||
90e3cdf2 JJ |
2827 | synthetic_opd = opd; |
2828 | synthetic_relocatable = relocatable; | |
595da8c5 | 2829 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2830 | |
c9727e01 AM |
2831 | if (!relocatable && symcount > 1) |
2832 | { | |
2833 | long j; | |
2834 | /* Trim duplicate syms, since we may have merged the normal and | |
2835 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2836 | different values, so trim any with the same value. */ |
c9727e01 AM |
2837 | for (i = 1, j = 1; i < symcount; ++i) |
2838 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2839 | != syms[i]->value + syms[i]->section->vma) | |
2840 | syms[j++] = syms[i]; | |
2841 | symcount = j; | |
2842 | } | |
2843 | ||
699733f6 AM |
2844 | i = 0; |
2845 | if (syms[i]->section == opd) | |
2846 | ++i; | |
2847 | codesecsym = i; | |
90e3cdf2 | 2848 | |
699733f6 AM |
2849 | for (; i < symcount; ++i) |
2850 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2851 | != (SEC_CODE | SEC_ALLOC)) | |
2852 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2853 | break; | |
2854 | codesecsymend = i; | |
90e3cdf2 | 2855 | |
699733f6 AM |
2856 | for (; i < symcount; ++i) |
2857 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2858 | break; | |
2859 | secsymend = i; | |
90e3cdf2 | 2860 | |
699733f6 AM |
2861 | for (; i < symcount; ++i) |
2862 | if (syms[i]->section != opd) | |
2863 | break; | |
2864 | opdsymend = i; | |
90e3cdf2 | 2865 | |
699733f6 AM |
2866 | for (; i < symcount; ++i) |
2867 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2868 | != (SEC_CODE | SEC_ALLOC)) | |
2869 | break; | |
2870 | symcount = i; | |
2871 | ||
c9727e01 | 2872 | count = 0; |
699733f6 | 2873 | if (opdsymend == secsymend) |
c9727e01 | 2874 | goto done; |
90e3cdf2 | 2875 | |
699733f6 | 2876 | if (relocatable) |
90e3cdf2 | 2877 | { |
699733f6 AM |
2878 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2879 | arelent *r; | |
2880 | size_t size; | |
2881 | long relcount; | |
90e3cdf2 | 2882 | |
699733f6 | 2883 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2884 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2885 | if (relcount == 0) |
c9727e01 | 2886 | goto done; |
90e3cdf2 | 2887 | |
7356fed5 AM |
2888 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2889 | { | |
2890 | count = -1; | |
2891 | goto done; | |
2892 | } | |
2893 | ||
699733f6 | 2894 | size = 0; |
595da8c5 | 2895 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2896 | { |
2897 | asymbol *sym; | |
90e3cdf2 | 2898 | |
595da8c5 | 2899 | while (r < opd->relocation + relcount |
699733f6 AM |
2900 | && r->address < syms[i]->value + opd->vma) |
2901 | ++r; | |
90e3cdf2 | 2902 | |
595da8c5 | 2903 | if (r == opd->relocation + relcount) |
699733f6 | 2904 | break; |
90e3cdf2 | 2905 | |
699733f6 AM |
2906 | if (r->address != syms[i]->value + opd->vma) |
2907 | continue; | |
90e3cdf2 | 2908 | |
699733f6 AM |
2909 | if (r->howto->type != R_PPC64_ADDR64) |
2910 | continue; | |
90e3cdf2 | 2911 | |
699733f6 AM |
2912 | sym = *r->sym_ptr_ptr; |
2913 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2914 | sym->section->id, sym->value + r->addend)) | |
2915 | { | |
2916 | ++count; | |
2917 | size += sizeof (asymbol); | |
2918 | size += strlen (syms[i]->name) + 2; | |
2919 | } | |
2920 | } | |
90e3cdf2 | 2921 | |
699733f6 AM |
2922 | s = *ret = bfd_malloc (size); |
2923 | if (s == NULL) | |
2924 | { | |
7356fed5 | 2925 | count = -1; |
c9727e01 | 2926 | goto done; |
699733f6 | 2927 | } |
90e3cdf2 | 2928 | |
699733f6 | 2929 | names = (char *) (s + count); |
90e3cdf2 | 2930 | |
595da8c5 | 2931 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2932 | { |
699733f6 | 2933 | asymbol *sym; |
90e3cdf2 | 2934 | |
595da8c5 | 2935 | while (r < opd->relocation + relcount |
699733f6 AM |
2936 | && r->address < syms[i]->value + opd->vma) |
2937 | ++r; | |
90e3cdf2 | 2938 | |
595da8c5 | 2939 | if (r == opd->relocation + relcount) |
699733f6 AM |
2940 | break; |
2941 | ||
2942 | if (r->address != syms[i]->value + opd->vma) | |
2943 | continue; | |
2944 | ||
2945 | if (r->howto->type != R_PPC64_ADDR64) | |
2946 | continue; | |
90e3cdf2 | 2947 | |
699733f6 AM |
2948 | sym = *r->sym_ptr_ptr; |
2949 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2950 | sym->section->id, sym->value + r->addend)) | |
2951 | { | |
2952 | size_t len; | |
2953 | ||
2954 | *s = *syms[i]; | |
2955 | s->section = sym->section; | |
2956 | s->value = sym->value + r->addend; | |
2957 | s->name = names; | |
2958 | *names++ = '.'; | |
2959 | len = strlen (syms[i]->name); | |
2960 | memcpy (names, syms[i]->name, len + 1); | |
2961 | names += len + 1; | |
6f610d07 UW |
2962 | /* Have udata.p point back to the original symbol this |
2963 | synthetic symbol was derived from. */ | |
2964 | s->udata.p = syms[i]; | |
699733f6 AM |
2965 | s++; |
2966 | } | |
2967 | } | |
2968 | } | |
2969 | else | |
90e3cdf2 | 2970 | { |
699733f6 AM |
2971 | bfd_byte *contents; |
2972 | size_t size; | |
90e3cdf2 | 2973 | |
699733f6 AM |
2974 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2975 | { | |
2976 | if (contents) | |
c9727e01 AM |
2977 | { |
2978 | free_contents_and_exit: | |
2979 | free (contents); | |
2980 | } | |
7356fed5 | 2981 | count = -1; |
c9727e01 | 2982 | goto done; |
699733f6 | 2983 | } |
90e3cdf2 | 2984 | |
699733f6 AM |
2985 | size = 0; |
2986 | for (i = secsymend; i < opdsymend; ++i) | |
2987 | { | |
2988 | bfd_vma ent; | |
90e3cdf2 | 2989 | |
699733f6 AM |
2990 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2991 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2992 | { | |
2993 | ++count; | |
2994 | size += sizeof (asymbol); | |
2995 | size += strlen (syms[i]->name) + 2; | |
2996 | } | |
2997 | } | |
90e3cdf2 | 2998 | |
699733f6 AM |
2999 | s = *ret = bfd_malloc (size); |
3000 | if (s == NULL) | |
7356fed5 | 3001 | goto free_contents_and_exit; |
90e3cdf2 | 3002 | |
699733f6 | 3003 | names = (char *) (s + count); |
90e3cdf2 | 3004 | |
699733f6 | 3005 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3006 | { |
699733f6 | 3007 | bfd_vma ent; |
90e3cdf2 | 3008 | |
699733f6 AM |
3009 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3010 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3011 | { |
c9727e01 | 3012 | long lo, hi; |
699733f6 | 3013 | size_t len; |
c9727e01 | 3014 | asection *sec = abfd->sections; |
90e3cdf2 | 3015 | |
699733f6 AM |
3016 | *s = *syms[i]; |
3017 | lo = codesecsym; | |
3018 | hi = codesecsymend; | |
3019 | while (lo < hi) | |
3020 | { | |
c9727e01 | 3021 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3022 | if (syms[mid]->section->vma < ent) |
3023 | lo = mid + 1; | |
3024 | else if (syms[mid]->section->vma > ent) | |
3025 | hi = mid; | |
3026 | else | |
c9727e01 AM |
3027 | { |
3028 | sec = syms[mid]->section; | |
3029 | break; | |
3030 | } | |
699733f6 AM |
3031 | } |
3032 | ||
c9727e01 | 3033 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3034 | sec = syms[lo - 1]->section; |
699733f6 AM |
3035 | |
3036 | for (; sec != NULL; sec = sec->next) | |
3037 | { | |
3038 | if (sec->vma > ent) | |
3039 | break; | |
3040 | if ((sec->flags & SEC_ALLOC) == 0 | |
3041 | || (sec->flags & SEC_LOAD) == 0) | |
3042 | break; | |
3043 | if ((sec->flags & SEC_CODE) != 0) | |
3044 | s->section = sec; | |
3045 | } | |
3046 | s->value = ent - s->section->vma; | |
3047 | s->name = names; | |
3048 | *names++ = '.'; | |
3049 | len = strlen (syms[i]->name); | |
3050 | memcpy (names, syms[i]->name, len + 1); | |
3051 | names += len + 1; | |
6f610d07 UW |
3052 | /* Have udata.p point back to the original symbol this |
3053 | synthetic symbol was derived from. */ | |
3054 | s->udata.p = syms[i]; | |
699733f6 | 3055 | s++; |
90e3cdf2 | 3056 | } |
90e3cdf2 | 3057 | } |
699733f6 | 3058 | free (contents); |
90e3cdf2 JJ |
3059 | } |
3060 | ||
c9727e01 | 3061 | done: |
a7535cf3 | 3062 | free (syms); |
90e3cdf2 JJ |
3063 | return count; |
3064 | } | |
5bd4f169 | 3065 | \f |
65f38f15 AM |
3066 | /* The following functions are specific to the ELF linker, while |
3067 | functions above are used generally. Those named ppc64_elf_* are | |
3068 | called by the main ELF linker code. They appear in this file more | |
3069 | or less in the order in which they are called. eg. | |
3070 | ppc64_elf_check_relocs is called early in the link process, | |
3071 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3072 | called. |
3073 | ||
3074 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3075 | functions have both a function code symbol and a function descriptor | |
3076 | symbol. A call to foo in a relocatable object file looks like: | |
3077 | ||
3078 | . .text | |
3079 | . x: | |
3080 | . bl .foo | |
3081 | . nop | |
3082 | ||
3083 | The function definition in another object file might be: | |
3084 | ||
3085 | . .section .opd | |
3086 | . foo: .quad .foo | |
3087 | . .quad .TOC.@tocbase | |
3088 | . .quad 0 | |
3089 | . | |
3090 | . .text | |
3091 | . .foo: blr | |
3092 | ||
3093 | When the linker resolves the call during a static link, the branch | |
3094 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3095 | If the function definition is in a shared library, things are a little | |
3096 | different: The call goes via a plt call stub, the opd information gets | |
3097 | copied to the plt, and the linker patches the nop. | |
3098 | ||
3099 | . x: | |
3100 | . bl .foo_stub | |
3101 | . ld 2,40(1) | |
3102 | . | |
3103 | . | |
3104 | . .foo_stub: | |
3105 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3106 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3107 | . std 2,40(1) # this is the general idea |
3108 | . ld 11,0(12) | |
3109 | . ld 2,8(12) | |
3110 | . mtctr 11 | |
3111 | . ld 11,16(12) | |
3112 | . bctr | |
3113 | . | |
3114 | . .section .plt | |
3115 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3116 | ||
3117 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3118 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3119 | copying. | |
3120 | ||
3121 | What are the difficulties here? Well, firstly, the relocations | |
3122 | examined by the linker in check_relocs are against the function code | |
3123 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3124 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3125 | to carefully copy dynamic link information from one symbol to the other. | |
3126 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3127 | symbol as is normal for most other backends. We need foo dynamic | |
3128 | instead, at least for an application final link. However, when | |
3129 | creating a shared library containing foo, we need to have both symbols | |
3130 | dynamic so that references to .foo are satisfied during the early | |
3131 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3132 | definition from some other object, eg. a static library. |
3133 | ||
3134 | Update: As of August 2004, we support a new convention. Function | |
3135 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3136 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3137 | |
3138 | /* The linker needs to keep track of the number of relocs that it | |
3139 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3140 | This is so that it can later discard them if they are found to be | |
3141 | unnecessary. We store the information in a field extending the | |
3142 | regular ELF linker hash table. */ | |
3143 | ||
3144 | struct ppc_dyn_relocs | |
3145 | { | |
3146 | struct ppc_dyn_relocs *next; | |
3147 | ||
3148 | /* The input section of the reloc. */ | |
3149 | asection *sec; | |
3150 | ||
3151 | /* Total number of relocs copied for the input section. */ | |
3152 | bfd_size_type count; | |
3153 | ||
3154 | /* Number of pc-relative relocs copied for the input section. */ | |
3155 | bfd_size_type pc_count; | |
3156 | }; | |
3157 | ||
411e1bfb AM |
3158 | /* Track GOT entries needed for a given symbol. We might need more |
3159 | than one got entry per symbol. */ | |
3160 | struct got_entry | |
3161 | { | |
3162 | struct got_entry *next; | |
3163 | ||
e7b938ca | 3164 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3165 | bfd_vma addend; |
3166 | ||
e717da7e AM |
3167 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3168 | symbol referenced from different input files. This is to support | |
3169 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
102890f0 AM |
3170 | from one input file to another. FIXME: After group_sections we |
3171 | ought to merge entries within the group. | |
e717da7e AM |
3172 | |
3173 | Point to the BFD owning this GOT entry. */ | |
3174 | bfd *owner; | |
3175 | ||
3176 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3177 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3178 | char tls_type; | |
3179 | ||
e7b938ca | 3180 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3181 | union |
3182 | { | |
3183 | bfd_signed_vma refcount; | |
3184 | bfd_vma offset; | |
3185 | } got; | |
411e1bfb AM |
3186 | }; |
3187 | ||
3188 | /* The same for PLT. */ | |
3189 | struct plt_entry | |
3190 | { | |
3191 | struct plt_entry *next; | |
3192 | ||
3193 | bfd_vma addend; | |
3194 | ||
3195 | union | |
3196 | { | |
3197 | bfd_signed_vma refcount; | |
3198 | bfd_vma offset; | |
3199 | } plt; | |
3200 | }; | |
3201 | ||
65f38f15 | 3202 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3203 | selects those that must be copied when linking a shared library, |
3204 | even when the symbol is local. */ | |
65f38f15 | 3205 | |
411e1bfb | 3206 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3207 | ((RTYPE) != R_PPC64_REL32 \ |
3208 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3209 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3210 | |
f4656909 AM |
3211 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3212 | copying dynamic variables from a shared lib into an app's dynbss | |
3213 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3214 | shared lib. With code that gcc generates, it's vital that this be |
3215 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3216 | the address of a function descriptor, which resides in the .opd | |
3217 | section. gcc uses the descriptor directly rather than going via the | |
3218 | GOT as some other ABI's do, which means that initialized function | |
3219 | pointers must reference the descriptor. Thus, a function pointer | |
3220 | initialized to the address of a function in a shared library will | |
3221 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3222 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3223 | presents a problem as a plt entry for that function is also |
3224 | initialized from the function descriptor symbol and the copy reloc | |
3225 | may not be initialized first. */ | |
a23b6845 | 3226 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3227 | |
721956f4 AM |
3228 | /* Section name for stubs is the associated section name plus this |
3229 | string. */ | |
3230 | #define STUB_SUFFIX ".stub" | |
3231 | ||
3232 | /* Linker stubs. | |
3233 | ppc_stub_long_branch: | |
3234 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3235 | destination, but a 24 bit branch in a stub section will reach. | |
3236 | . b dest | |
3237 | ||
3238 | ppc_stub_plt_branch: | |
3239 | Similar to the above, but a 24 bit branch in the stub section won't | |
3240 | reach its destination. | |
87e226ce AM |
3241 | . addis %r12,%r2,xxx@toc@ha |
3242 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3243 | . mtctr %r11 |
3244 | . bctr | |
3245 | ||
3246 | ppc_stub_plt_call: | |
2c66dc6c AM |
3247 | Used to call a function in a shared library. If it so happens that |
3248 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3249 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3250 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3251 | . std %r2,40(%r1) |
87e226ce | 3252 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3253 | . mtctr %r11 |
ac2df442 | 3254 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3255 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3256 | . bctr |
ad8e1ba5 AM |
3257 | |
3258 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3259 | code to adjust the value and save r2 to support multiple toc sections. | |
3260 | A ppc_stub_long_branch with an r2 offset looks like: | |
3261 | . std %r2,40(%r1) | |
3262 | . addis %r2,%r2,off@ha | |
3263 | . addi %r2,%r2,off@l | |
3264 | . b dest | |
3265 | ||
3266 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3267 | . std %r2,40(%r1) | |
3268 | . addis %r12,%r2,xxx@toc@ha | |
3269 | . ld %r11,xxx@toc@l(%r12) | |
3270 | . addis %r2,%r2,off@ha | |
3271 | . addi %r2,%r2,off@l | |
3272 | . mtctr %r11 | |
3273 | . bctr | |
ac2df442 AM |
3274 | |
3275 | In cases where the "addis" instruction would add zero, the "addis" is | |
3276 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3277 | */ |
3278 | ||
3279 | enum ppc_stub_type { | |
3280 | ppc_stub_none, | |
3281 | ppc_stub_long_branch, | |
ad8e1ba5 | 3282 | ppc_stub_long_branch_r2off, |
721956f4 | 3283 | ppc_stub_plt_branch, |
ad8e1ba5 | 3284 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3285 | ppc_stub_plt_call |
3286 | }; | |
3287 | ||
3288 | struct ppc_stub_hash_entry { | |
3289 | ||
3290 | /* Base hash table entry structure. */ | |
3291 | struct bfd_hash_entry root; | |
3292 | ||
ad8e1ba5 AM |
3293 | enum ppc_stub_type stub_type; |
3294 | ||
721956f4 AM |
3295 | /* The stub section. */ |
3296 | asection *stub_sec; | |
3297 | ||
3298 | /* Offset within stub_sec of the beginning of this stub. */ | |
3299 | bfd_vma stub_offset; | |
3300 | ||
3301 | /* Given the symbol's value and its section we can determine its final | |
3302 | value when building the stubs (so the stub knows where to jump. */ | |
3303 | bfd_vma target_value; | |
3304 | asection *target_section; | |
3305 | ||
721956f4 AM |
3306 | /* The symbol table entry, if any, that this was derived from. */ |
3307 | struct ppc_link_hash_entry *h; | |
3308 | ||
411e1bfb AM |
3309 | /* And the reloc addend that this was derived from. */ |
3310 | bfd_vma addend; | |
3311 | ||
721956f4 AM |
3312 | /* Where this stub is being called from, or, in the case of combined |
3313 | stub sections, the first input section in the group. */ | |
3314 | asection *id_sec; | |
3315 | }; | |
3316 | ||
3317 | struct ppc_branch_hash_entry { | |
3318 | ||
3319 | /* Base hash table entry structure. */ | |
3320 | struct bfd_hash_entry root; | |
3321 | ||
c456f082 | 3322 | /* Offset within branch lookup table. */ |
721956f4 AM |
3323 | unsigned int offset; |
3324 | ||
3325 | /* Generation marker. */ | |
3326 | unsigned int iter; | |
3327 | }; | |
65f38f15 AM |
3328 | |
3329 | struct ppc_link_hash_entry | |
3330 | { | |
3331 | struct elf_link_hash_entry elf; | |
3332 | ||
b3fac117 AM |
3333 | union { |
3334 | /* A pointer to the most recently used stub hash entry against this | |
3335 | symbol. */ | |
3336 | struct ppc_stub_hash_entry *stub_cache; | |
3337 | ||
3338 | /* A pointer to the next symbol starting with a '.' */ | |
3339 | struct ppc_link_hash_entry *next_dot_sym; | |
3340 | } u; | |
721956f4 | 3341 | |
65f38f15 AM |
3342 | /* Track dynamic relocs copied for this symbol. */ |
3343 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3344 | |
721956f4 | 3345 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3346 | struct ppc_link_hash_entry *oh; |
721956f4 | 3347 | |
e86ce104 AM |
3348 | /* Flag function code and descriptor symbols. */ |
3349 | unsigned int is_func:1; | |
3350 | unsigned int is_func_descriptor:1; | |
908b32fc | 3351 | unsigned int fake:1; |
411e1bfb | 3352 | |
c5614fa4 AM |
3353 | /* Whether global opd/toc sym has been adjusted or not. |
3354 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3355 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3356 | unsigned int adjust_done:1; |
3357 | ||
99877b66 AM |
3358 | /* Set if we twiddled this symbol to weak at some stage. */ |
3359 | unsigned int was_undefined:1; | |
3360 | ||
411e1bfb | 3361 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3362 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3363 | corresponding relocs are encountered during check_relocs. | |
3364 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3365 | indicate the corresponding GOT entry type is not needed. | |
3366 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3367 | a TPREL one. We use a separate flag rather than setting TPREL | |
3368 | just for convenience in distinguishing the two cases. */ | |
3369 | #define TLS_GD 1 /* GD reloc. */ | |
3370 | #define TLS_LD 2 /* LD reloc. */ | |
3371 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3372 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3373 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3374 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3375 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3376 | char tls_mask; | |
65f38f15 AM |
3377 | }; |
3378 | ||
3379 | /* ppc64 ELF linker hash table. */ | |
3380 | ||
3381 | struct ppc_link_hash_table | |
3382 | { | |
3383 | struct elf_link_hash_table elf; | |
3384 | ||
721956f4 AM |
3385 | /* The stub hash table. */ |
3386 | struct bfd_hash_table stub_hash_table; | |
3387 | ||
3388 | /* Another hash table for plt_branch stubs. */ | |
3389 | struct bfd_hash_table branch_hash_table; | |
3390 | ||
3391 | /* Linker stub bfd. */ | |
3392 | bfd *stub_bfd; | |
3393 | ||
3394 | /* Linker call-backs. */ | |
4ce794b7 AM |
3395 | asection * (*add_stub_section) (const char *, asection *); |
3396 | void (*layout_sections_again) (void); | |
721956f4 AM |
3397 | |
3398 | /* Array to keep track of which stub sections have been created, and | |
3399 | information on stub grouping. */ | |
3400 | struct map_stub { | |
3401 | /* This is the section to which stubs in the group will be attached. */ | |
3402 | asection *link_sec; | |
3403 | /* The stub section. */ | |
3404 | asection *stub_sec; | |
ad8e1ba5 AM |
3405 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3406 | bfd_vma toc_off; | |
721956f4 AM |
3407 | } *stub_group; |
3408 | ||
ad8e1ba5 AM |
3409 | /* Temp used when calculating TOC pointers. */ |
3410 | bfd_vma toc_curr; | |
3411 | ||
8f3bab57 AM |
3412 | /* Highest input section id. */ |
3413 | int top_id; | |
3414 | ||
734b6cf9 AM |
3415 | /* Highest output section index. */ |
3416 | int top_index; | |
3417 | ||
b3fac117 AM |
3418 | /* Used when adding symbols. */ |
3419 | struct ppc_link_hash_entry *dot_syms; | |
3420 | ||
734b6cf9 AM |
3421 | /* List of input sections for each output section. */ |
3422 | asection **input_list; | |
721956f4 | 3423 | |
65f38f15 | 3424 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3425 | asection *got; |
4ce794b7 AM |
3426 | asection *plt; |
3427 | asection *relplt; | |
3428 | asection *dynbss; | |
3429 | asection *relbss; | |
3430 | asection *glink; | |
82bd7b59 | 3431 | asection *sfpr; |
4ce794b7 AM |
3432 | asection *brlt; |
3433 | asection *relbrlt; | |
ec338859 | 3434 | |
8387904d AM |
3435 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3436 | struct ppc_link_hash_entry *tls_get_addr; | |
3437 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3438 | |
9b5ecbd0 AM |
3439 | /* Statistics. */ |
3440 | unsigned long stub_count[ppc_stub_plt_call]; | |
3441 | ||
ee75fd95 AM |
3442 | /* Number of stubs against global syms. */ |
3443 | unsigned long stub_globals; | |
3444 | ||
ad8e1ba5 | 3445 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3446 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3447 | |
4c52953f AM |
3448 | /* Support for multiple toc sections. */ |
3449 | unsigned int no_multi_toc:1; | |
3450 | unsigned int multi_toc_needed:1; | |
3451 | ||
5d1634d7 | 3452 | /* Set on error. */ |
99877b66 | 3453 | unsigned int stub_error:1; |
721956f4 | 3454 | |
99877b66 AM |
3455 | /* Temp used by ppc64_elf_check_directives. */ |
3456 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3457 | |
3458 | /* Incremented every time we size stubs. */ | |
3459 | unsigned int stub_iteration; | |
5d1634d7 | 3460 | |
ec338859 AM |
3461 | /* Small local sym to section mapping cache. */ |
3462 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3463 | }; |
3464 | ||
4c52953f AM |
3465 | /* Rename some of the generic section flags to better document how they |
3466 | are used here. */ | |
3467 | #define has_toc_reloc has_gp_reloc | |
3468 | #define makes_toc_func_call need_finalize_relax | |
3469 | #define call_check_in_progress reloc_done | |
3470 | ||
65f38f15 AM |
3471 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3472 | ||
3473 | #define ppc_hash_table(p) \ | |
3474 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3475 | ||
721956f4 AM |
3476 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3477 | ((struct ppc_stub_hash_entry *) \ | |
3478 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3479 | ||
3480 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3481 | ((struct ppc_branch_hash_entry *) \ | |
3482 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3483 | ||
3484 | /* Create an entry in the stub hash table. */ | |
3485 | ||
3486 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3487 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3488 | struct bfd_hash_table *table, | |
3489 | const char *string) | |
721956f4 AM |
3490 | { |
3491 | /* Allocate the structure if it has not already been allocated by a | |
3492 | subclass. */ | |
3493 | if (entry == NULL) | |
3494 | { | |
3495 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3496 | if (entry == NULL) | |
3497 | return entry; | |
3498 | } | |
3499 | ||
3500 | /* Call the allocation method of the superclass. */ | |
3501 | entry = bfd_hash_newfunc (entry, table, string); | |
3502 | if (entry != NULL) | |
3503 | { | |
3504 | struct ppc_stub_hash_entry *eh; | |
3505 | ||
3506 | /* Initialize the local fields. */ | |
3507 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3508 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3509 | eh->stub_sec = NULL; |
3510 | eh->stub_offset = 0; | |
3511 | eh->target_value = 0; | |
3512 | eh->target_section = NULL; | |
721956f4 AM |
3513 | eh->h = NULL; |
3514 | eh->id_sec = NULL; | |
3515 | } | |
3516 | ||
3517 | return entry; | |
3518 | } | |
3519 | ||
3520 | /* Create an entry in the branch hash table. */ | |
3521 | ||
3522 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3523 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3524 | struct bfd_hash_table *table, | |
3525 | const char *string) | |
721956f4 AM |
3526 | { |
3527 | /* Allocate the structure if it has not already been allocated by a | |
3528 | subclass. */ | |
3529 | if (entry == NULL) | |
3530 | { | |
3531 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3532 | if (entry == NULL) | |
3533 | return entry; | |
3534 | } | |
3535 | ||
3536 | /* Call the allocation method of the superclass. */ | |
3537 | entry = bfd_hash_newfunc (entry, table, string); | |
3538 | if (entry != NULL) | |
3539 | { | |
3540 | struct ppc_branch_hash_entry *eh; | |
3541 | ||
3542 | /* Initialize the local fields. */ | |
3543 | eh = (struct ppc_branch_hash_entry *) entry; | |
3544 | eh->offset = 0; | |
3545 | eh->iter = 0; | |
3546 | } | |
3547 | ||
3548 | return entry; | |
3549 | } | |
3550 | ||
65f38f15 AM |
3551 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3552 | ||
3553 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3554 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3555 | struct bfd_hash_table *table, | |
3556 | const char *string) | |
65f38f15 AM |
3557 | { |
3558 | /* Allocate the structure if it has not already been allocated by a | |
3559 | subclass. */ | |
3560 | if (entry == NULL) | |
3561 | { | |
3562 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3563 | if (entry == NULL) | |
3564 | return entry; | |
3565 | } | |
3566 | ||
3567 | /* Call the allocation method of the superclass. */ | |
3568 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3569 | if (entry != NULL) | |
3570 | { | |
3571 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3572 | ||
b3fac117 | 3573 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3574 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3575 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3576 | ||
3577 | /* When making function calls, old ABI code references function entry | |
3578 | points (dot symbols), while new ABI code references the function | |
3579 | descriptor symbol. We need to make any combination of reference and | |
3580 | definition work together, without breaking archive linking. | |
3581 | ||
3582 | For a defined function "foo" and an undefined call to "bar": | |
3583 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3584 | "bar" too). | |
3585 | A new object defines "foo" and references "bar". | |
3586 | ||
3587 | A new object thus has no problem with its undefined symbols being | |
3588 | satisfied by definitions in an old object. On the other hand, the | |
3589 | old object won't have ".bar" satisfied by a new object. | |
3590 | ||
3591 | Keep a list of newly added dot-symbols. */ | |
3592 | ||
3593 | if (string[0] == '.') | |
3594 | { | |
3595 | struct ppc_link_hash_table *htab; | |
3596 | ||
3597 | htab = (struct ppc_link_hash_table *) table; | |
3598 | eh->u.next_dot_sym = htab->dot_syms; | |
3599 | htab->dot_syms = eh; | |
3600 | } | |
65f38f15 AM |
3601 | } |
3602 | ||
3603 | return entry; | |
3604 | } | |
3605 | ||
3606 | /* Create a ppc64 ELF linker hash table. */ | |
3607 | ||
3608 | static struct bfd_link_hash_table * | |
4ce794b7 | 3609 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3610 | { |
3611 | struct ppc_link_hash_table *htab; | |
3612 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3613 | ||
4ce794b7 | 3614 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3615 | if (htab == NULL) |
3616 | return NULL; | |
3617 | ||
66eb6687 AM |
3618 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3619 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3620 | { |
e2d34d7d | 3621 | free (htab); |
65f38f15 AM |
3622 | return NULL; |
3623 | } | |
3624 | ||
721956f4 | 3625 | /* Init the stub hash table too. */ |
66eb6687 AM |
3626 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3627 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3628 | return NULL; |
3629 | ||
3630 | /* And the branch hash table. */ | |
66eb6687 AM |
3631 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3632 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3633 | return NULL; |
3634 | ||
3254fd24 AM |
3635 | /* Initializing two fields of the union is just cosmetic. We really |
3636 | only care about glist, but when compiled on a 32-bit host the | |
3637 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3638 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3639 | htab->elf.init_got_refcount.refcount = 0; |
3640 | htab->elf.init_got_refcount.glist = NULL; | |
3641 | htab->elf.init_plt_refcount.refcount = 0; | |
3642 | htab->elf.init_plt_refcount.glist = NULL; | |
3643 | htab->elf.init_got_offset.offset = 0; | |
3644 | htab->elf.init_got_offset.glist = NULL; | |
3645 | htab->elf.init_plt_offset.offset = 0; | |
3646 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3647 | |
65f38f15 AM |
3648 | return &htab->elf.root; |
3649 | } | |
3650 | ||
721956f4 AM |
3651 | /* Free the derived linker hash table. */ |
3652 | ||
3653 | static void | |
4ce794b7 | 3654 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3655 | { |
3656 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3657 | ||
3658 | bfd_hash_table_free (&ret->stub_hash_table); | |
3659 | bfd_hash_table_free (&ret->branch_hash_table); | |
3660 | _bfd_generic_link_hash_table_free (hash); | |
3661 | } | |
3662 | ||
e717da7e AM |
3663 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3664 | ||
3665 | void | |
3666 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3667 | { | |
3668 | struct ppc_link_hash_table *htab; | |
3669 | ||
3670 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3671 | ||
3672 | /* Always hook our dynamic sections into the first bfd, which is the | |
3673 | linker created stub bfd. This ensures that the GOT header is at | |
3674 | the start of the output TOC section. */ | |
3675 | htab = ppc_hash_table (info); | |
3676 | htab->stub_bfd = abfd; | |
3677 | htab->elf.dynobj = abfd; | |
3678 | } | |
3679 | ||
721956f4 AM |
3680 | /* Build a name for an entry in the stub hash table. */ |
3681 | ||
3682 | static char * | |
4ce794b7 AM |
3683 | ppc_stub_name (const asection *input_section, |
3684 | const asection *sym_sec, | |
3685 | const struct ppc_link_hash_entry *h, | |
3686 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3687 | { |
3688 | char *stub_name; | |
3689 | bfd_size_type len; | |
3690 | ||
3691 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3692 | offsets from a sym as a branch target? In fact, we could | |
3693 | probably assume the addend is always zero. */ | |
3694 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3695 | ||
3696 | if (h) | |
3697 | { | |
3698 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3699 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3700 | if (stub_name == NULL) |
3701 | return stub_name; | |
3702 | ||
3703 | sprintf (stub_name, "%08x.%s+%x", | |
3704 | input_section->id & 0xffffffff, | |
3705 | h->elf.root.root.string, | |
3706 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3707 | } |
3708 | else | |
3709 | { | |
ad8e1ba5 | 3710 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3711 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3712 | if (stub_name == NULL) |
3713 | return stub_name; | |
3714 | ||
3715 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3716 | input_section->id & 0xffffffff, | |
3717 | sym_sec->id & 0xffffffff, | |
3718 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3719 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3720 | } |
ee75fd95 AM |
3721 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3722 | stub_name[len - 2] = 0; | |
721956f4 AM |
3723 | return stub_name; |
3724 | } | |
3725 | ||
3726 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3727 | creating the stub name takes a bit of time. */ | |
3728 | ||
3729 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3730 | ppc_get_stub_entry (const asection *input_section, |
3731 | const asection *sym_sec, | |
039b3fef | 3732 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3733 | const Elf_Internal_Rela *rel, |
3734 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3735 | { |
3736 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3737 | const asection *id_sec; |
3738 | ||
3739 | /* If this input section is part of a group of sections sharing one | |
3740 | stub section, then use the id of the first section in the group. | |
3741 | Stub names need to include a section id, as there may well be | |
3742 | more than one stub used to reach say, printf, and we need to | |
3743 | distinguish between them. */ | |
3744 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3745 | ||
b3fac117 AM |
3746 | if (h != NULL && h->u.stub_cache != NULL |
3747 | && h->u.stub_cache->h == h | |
3748 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3749 | { |
b3fac117 | 3750 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3751 | } |
3752 | else | |
3753 | { | |
3754 | char *stub_name; | |
3755 | ||
3756 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3757 | if (stub_name == NULL) | |
3758 | return NULL; | |
3759 | ||
3760 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3761 | stub_name, FALSE, FALSE); |
721956f4 | 3762 | if (h != NULL) |
b3fac117 | 3763 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3764 | |
3765 | free (stub_name); | |
3766 | } | |
3767 | ||
3768 | return stub_entry; | |
3769 | } | |
3770 | ||
3771 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3772 | stub entry are initialised. */ | |
3773 | ||
3774 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3775 | ppc_add_stub (const char *stub_name, |
3776 | asection *section, | |
3777 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3778 | { |
3779 | asection *link_sec; | |
3780 | asection *stub_sec; | |
3781 | struct ppc_stub_hash_entry *stub_entry; | |
3782 | ||
3783 | link_sec = htab->stub_group[section->id].link_sec; | |
3784 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3785 | if (stub_sec == NULL) | |
3786 | { | |
3787 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3788 | if (stub_sec == NULL) | |
3789 | { | |
d4c88bbb | 3790 | size_t namelen; |
721956f4 AM |
3791 | bfd_size_type len; |
3792 | char *s_name; | |
3793 | ||
d4c88bbb AM |
3794 | namelen = strlen (link_sec->name); |
3795 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3796 | s_name = bfd_alloc (htab->stub_bfd, len); |
3797 | if (s_name == NULL) | |
3798 | return NULL; | |
3799 | ||
d4c88bbb AM |
3800 | memcpy (s_name, link_sec->name, namelen); |
3801 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3802 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3803 | if (stub_sec == NULL) | |
3804 | return NULL; | |
3805 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3806 | } | |
3807 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3808 | } | |
3809 | ||
3810 | /* Enter this entry into the linker stub hash table. */ | |
3811 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3812 | TRUE, FALSE); |
721956f4 AM |
3813 | if (stub_entry == NULL) |
3814 | { | |
d003868e AM |
3815 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3816 | section->owner, stub_name); | |
721956f4 AM |
3817 | return NULL; |
3818 | } | |
3819 | ||
3820 | stub_entry->stub_sec = stub_sec; | |
3821 | stub_entry->stub_offset = 0; | |
3822 | stub_entry->id_sec = link_sec; | |
3823 | return stub_entry; | |
3824 | } | |
3825 | ||
82bd7b59 AM |
3826 | /* Create sections for linker generated code. */ |
3827 | ||
b34976b6 | 3828 | static bfd_boolean |
4ce794b7 | 3829 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3830 | { |
3831 | struct ppc_link_hash_table *htab; | |
3832 | flagword flags; | |
3833 | ||
3834 | htab = ppc_hash_table (info); | |
3835 | ||
3836 | /* Create .sfpr for code to save and restore fp regs. */ | |
3837 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3838 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3839 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3840 | flags); | |
82bd7b59 | 3841 | if (htab->sfpr == NULL |
82bd7b59 | 3842 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3843 | return FALSE; |
82bd7b59 | 3844 | |
721956f4 | 3845 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3846 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3847 | flags); | |
4ce794b7 | 3848 | if (htab->glink == NULL |
ee4bf8d2 | 3849 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 3850 | return FALSE; |
82bd7b59 | 3851 | |
c456f082 | 3852 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
3853 | flags = (SEC_ALLOC | SEC_LOAD |
3854 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3855 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3856 | flags); | |
4ce794b7 | 3857 | if (htab->brlt == NULL |
4ce794b7 | 3858 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3859 | return FALSE; |
721956f4 | 3860 | |
e4e0193e | 3861 | if (!info->shared) |
c456f082 AM |
3862 | return TRUE; |
3863 | ||
e4e0193e AM |
3864 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
3865 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3866 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
3867 | ".rela.branch_lt", | |
3868 | flags); | |
c456f082 AM |
3869 | if (!htab->relbrlt |
3870 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3871 | return FALSE; | |
3872 | ||
b34976b6 | 3873 | return TRUE; |
82bd7b59 AM |
3874 | } |
3875 | ||
e717da7e AM |
3876 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3877 | not already done. */ | |
65f38f15 | 3878 | |
b34976b6 | 3879 | static bfd_boolean |
e717da7e | 3880 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3881 | { |
e717da7e AM |
3882 | asection *got, *relgot; |
3883 | flagword flags; | |
3884 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3885 | |
4ce794b7 | 3886 | if (!htab->got) |
e717da7e AM |
3887 | { |
3888 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3889 | return FALSE; | |
3890 | ||
3891 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3892 | if (!htab->got) | |
3893 | abort (); | |
3894 | } | |
3895 | ||
3896 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3897 | | SEC_LINKER_CREATED); | |
3898 | ||
c456f082 | 3899 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3900 | if (!got |
e717da7e AM |
3901 | || !bfd_set_section_alignment (abfd, got, 3)) |
3902 | return FALSE; | |
65f38f15 | 3903 | |
c456f082 AM |
3904 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3905 | flags | SEC_READONLY); | |
e717da7e | 3906 | if (!relgot |
e717da7e | 3907 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3908 | return FALSE; |
e717da7e AM |
3909 | |
3910 | ppc64_elf_tdata (abfd)->got = got; | |
3911 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3912 | return TRUE; |
65f38f15 | 3913 | } |
5bd4f169 | 3914 | |
82bd7b59 | 3915 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3916 | |
b34976b6 | 3917 | static bfd_boolean |
4ce794b7 | 3918 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3919 | { |
65f38f15 | 3920 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3921 | |
65f38f15 | 3922 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3923 | return FALSE; |
65f38f15 | 3924 | |
e717da7e AM |
3925 | htab = ppc_hash_table (info); |
3926 | if (!htab->got) | |
3927 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3928 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3929 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3930 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3931 | if (!info->shared) |
4ce794b7 | 3932 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3933 | |
e717da7e | 3934 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3935 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3936 | abort (); |
3937 | ||
b34976b6 | 3938 | return TRUE; |
5bd4f169 AM |
3939 | } |
3940 | ||
40d16e0b AM |
3941 | /* Merge PLT info on FROM with that on TO. */ |
3942 | ||
3943 | static void | |
3944 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3945 | struct ppc_link_hash_entry *to) | |
3946 | { | |
3947 | if (from->elf.plt.plist != NULL) | |
3948 | { | |
3949 | if (to->elf.plt.plist != NULL) | |
3950 | { | |
3951 | struct plt_entry **entp; | |
3952 | struct plt_entry *ent; | |
3953 | ||
3954 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3955 | { | |
3956 | struct plt_entry *dent; | |
3957 | ||
3958 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3959 | if (dent->addend == ent->addend) | |
3960 | { | |
3961 | dent->plt.refcount += ent->plt.refcount; | |
3962 | *entp = ent->next; | |
3963 | break; | |
3964 | } | |
3965 | if (dent == NULL) | |
3966 | entp = &ent->next; | |
3967 | } | |
3968 | *entp = to->elf.plt.plist; | |
3969 | } | |
3970 | ||
3971 | to->elf.plt.plist = from->elf.plt.plist; | |
3972 | from->elf.plt.plist = NULL; | |
3973 | } | |
3974 | } | |
3975 | ||
65f38f15 AM |
3976 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3977 | ||
3978 | static void | |
fcfa13d2 AM |
3979 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3980 | struct elf_link_hash_entry *dir, | |
3981 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3982 | { |
3983 | struct ppc_link_hash_entry *edir, *eind; | |
3984 | ||
3985 | edir = (struct ppc_link_hash_entry *) dir; | |
3986 | eind = (struct ppc_link_hash_entry *) ind; | |
3987 | ||
411e1bfb | 3988 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3989 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3990 | { |
bbd7ec4a AM |
3991 | if (edir->dyn_relocs != NULL) |
3992 | { | |
3993 | struct ppc_dyn_relocs **pp; | |
3994 | struct ppc_dyn_relocs *p; | |
3995 | ||
fcfa13d2 | 3996 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3997 | list. Merge any entries against the same section. */ |
3998 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3999 | { | |
4000 | struct ppc_dyn_relocs *q; | |
4001 | ||
4002 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4003 | if (q->sec == p->sec) | |
4004 | { | |
4005 | q->pc_count += p->pc_count; | |
4006 | q->count += p->count; | |
4007 | *pp = p->next; | |
4008 | break; | |
4009 | } | |
4010 | if (q == NULL) | |
4011 | pp = &p->next; | |
4012 | } | |
4013 | *pp = edir->dyn_relocs; | |
4014 | } | |
4015 | ||
65f38f15 AM |
4016 | edir->dyn_relocs = eind->dyn_relocs; |
4017 | eind->dyn_relocs = NULL; | |
4018 | } | |
65f38f15 | 4019 | |
6349e628 AM |
4020 | edir->is_func |= eind->is_func; |
4021 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4022 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4023 | |
81848ca0 | 4024 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4025 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4026 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4027 | if (!(ELIMINATE_COPY_RELOCS |
4028 | && eind->elf.root.type != bfd_link_hash_indirect | |
4029 | && edir->elf.dynamic_adjusted)) | |
4030 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4031 | |
f5385ebf AM |
4032 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4033 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4034 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4035 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4036 | |
4037 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4038 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4039 | return; | |
4040 | ||
81848ca0 AM |
4041 | /* Copy over got entries that we may have already seen to the |
4042 | symbol which just became indirect. */ | |
411e1bfb AM |
4043 | if (eind->elf.got.glist != NULL) |
4044 | { | |
4045 | if (edir->elf.got.glist != NULL) | |
4046 | { | |
4047 | struct got_entry **entp; | |
4048 | struct got_entry *ent; | |
4049 | ||
4050 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4051 | { | |
4052 | struct got_entry *dent; | |
4053 | ||
4054 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4055 | if (dent->addend == ent->addend | |
e717da7e | 4056 | && dent->owner == ent->owner |
411e1bfb AM |
4057 | && dent->tls_type == ent->tls_type) |
4058 | { | |
4059 | dent->got.refcount += ent->got.refcount; | |
4060 | *entp = ent->next; | |
4061 | break; | |
4062 | } | |
4063 | if (dent == NULL) | |
4064 | entp = &ent->next; | |
4065 | } | |
4066 | *entp = edir->elf.got.glist; | |
4067 | } | |
4068 | ||
4069 | edir->elf.got.glist = eind->elf.got.glist; | |
4070 | eind->elf.got.glist = NULL; | |
4071 | } | |
4072 | ||
4073 | /* And plt entries. */ | |
40d16e0b | 4074 | move_plt_plist (eind, edir); |
411e1bfb | 4075 | |
fcfa13d2 | 4076 | if (eind->elf.dynindx != -1) |
411e1bfb | 4077 | { |
fcfa13d2 AM |
4078 | if (edir->elf.dynindx != -1) |
4079 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4080 | edir->elf.dynstr_index); | |
411e1bfb AM |
4081 | edir->elf.dynindx = eind->elf.dynindx; |
4082 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4083 | eind->elf.dynindx = -1; | |
4084 | eind->elf.dynstr_index = 0; | |
4085 | } | |
411e1bfb AM |
4086 | } |
4087 | ||
8387904d AM |
4088 | /* Find the function descriptor hash entry from the given function code |
4089 | hash entry FH. Link the entries via their OH fields. */ | |
4090 | ||
4091 | static struct ppc_link_hash_entry * | |
4092 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4093 | { | |
4094 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4095 | ||
4096 | if (fdh == NULL) | |
4097 | { | |
4098 | const char *fd_name = fh->elf.root.root.string + 1; | |
4099 | ||
4100 | fdh = (struct ppc_link_hash_entry *) | |
4101 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4102 | if (fdh != NULL) | |
4103 | { | |
4104 | fdh->is_func_descriptor = 1; | |
4105 | fdh->oh = fh; | |
4106 | fh->is_func = 1; | |
4107 | fh->oh = fdh; | |
4108 | } | |
4109 | } | |
4110 | ||
4111 | return fdh; | |
4112 | } | |
4113 | ||
bb700d78 AM |
4114 | /* Make a fake function descriptor sym for the code sym FH. */ |
4115 | ||
4116 | static struct ppc_link_hash_entry * | |
4117 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4118 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4119 | { |
4120 | bfd *abfd; | |
4121 | asymbol *newsym; | |
4122 | struct bfd_link_hash_entry *bh; | |
4123 | struct ppc_link_hash_entry *fdh; | |
4124 | ||
4125 | abfd = fh->elf.root.u.undef.abfd; | |
4126 | newsym = bfd_make_empty_symbol (abfd); | |
4127 | newsym->name = fh->elf.root.root.string + 1; | |
4128 | newsym->section = bfd_und_section_ptr; | |
4129 | newsym->value = 0; | |
908b32fc | 4130 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4131 | |
4132 | bh = NULL; | |
4133 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4134 | newsym->flags, newsym->section, | |
4135 | newsym->value, NULL, FALSE, FALSE, | |
4136 | &bh)) | |
4137 | return NULL; | |
4138 | ||
4139 | fdh = (struct ppc_link_hash_entry *) bh; | |
4140 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4141 | fdh->fake = 1; |
4142 | fdh->is_func_descriptor = 1; | |
4143 | fdh->oh = fh; | |
4144 | fh->is_func = 1; | |
4145 | fh->oh = fdh; | |
bb700d78 AM |
4146 | return fdh; |
4147 | } | |
4148 | ||
8387904d AM |
4149 | /* Fix function descriptor symbols defined in .opd sections to be |
4150 | function type. */ | |
555cd476 AM |
4151 | |
4152 | static bfd_boolean | |
b3fac117 | 4153 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4154 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4155 | Elf_Internal_Sym *isym, | |
b3fac117 | 4156 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4157 | flagword *flags ATTRIBUTE_UNUSED, |
4158 | asection **sec, | |
4159 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4160 | { | |
8843416a AM |
4161 | if (*sec != NULL |
4162 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4163 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4164 | |
555cd476 AM |
4165 | return TRUE; |
4166 | } | |
4167 | ||
8387904d | 4168 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4169 | inclusion of a new ABI object archive that defines "bar". |
4170 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4171 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4172 | |
4173 | static struct elf_link_hash_entry * | |
4174 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4175 | struct bfd_link_info *info, | |
4176 | const char *name) | |
4177 | { | |
4178 | struct elf_link_hash_entry *h; | |
4179 | char *dot_name; | |
4180 | size_t len; | |
4181 | ||
4182 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4183 | if (h != NULL |
4184 | /* Don't return this sym if it is a fake function descriptor | |
4185 | created by add_symbol_adjust. */ | |
4186 | && !(h->root.type == bfd_link_hash_undefweak | |
4187 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4188 | return h; |
4189 | ||
4190 | if (name[0] == '.') | |
4191 | return h; | |
4192 | ||
4193 | len = strlen (name); | |
4194 | dot_name = bfd_alloc (abfd, len + 2); | |
4195 | if (dot_name == NULL) | |
4196 | return (struct elf_link_hash_entry *) 0 - 1; | |
4197 | dot_name[0] = '.'; | |
4198 | memcpy (dot_name + 1, name, len + 1); | |
4199 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4200 | bfd_release (abfd, dot_name); | |
4201 | return h; | |
4202 | } | |
4203 | ||
4204 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4205 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4206 | are made weak. This stops later archive searches from including an | |
4207 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4208 | prevents the linker complaining about undefined symbols. |
4209 | We also check and correct mismatched symbol visibility here. The | |
4210 | most restrictive visibility of the function descriptor and the | |
4211 | function entry symbol is used. */ | |
8387904d AM |
4212 | |
4213 | static bfd_boolean | |
b3fac117 | 4214 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4215 | { |
8387904d AM |
4216 | struct ppc_link_hash_table *htab; |
4217 | struct ppc_link_hash_entry *fdh; | |
4218 | ||
b3fac117 | 4219 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4220 | return TRUE; |
4221 | ||
b3fac117 AM |
4222 | if (eh->elf.root.type == bfd_link_hash_warning) |
4223 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4224 | |
b3fac117 AM |
4225 | if (eh->elf.root.root.string[0] != '.') |
4226 | abort (); | |
8387904d | 4227 | |
b3fac117 | 4228 | htab = ppc_hash_table (info); |
99877b66 | 4229 | fdh = get_fdh (eh, htab); |
bb700d78 | 4230 | if (fdh == NULL |
b3fac117 | 4231 | && !info->relocatable |
bb700d78 AM |
4232 | && (eh->elf.root.type == bfd_link_hash_undefined |
4233 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4234 | && eh->elf.ref_regular) | |
4235 | { | |
4236 | /* Make an undefweak function descriptor sym, which is enough to | |
4237 | pull in an --as-needed shared lib, but won't cause link | |
4238 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4239 | fdh = make_fdh (info, eh); |
bb700d78 | 4240 | if (fdh == NULL) |
b3fac117 | 4241 | return FALSE; |
bb700d78 AM |
4242 | else |
4243 | fdh->elf.ref_regular = 1; | |
4244 | } | |
e87d886e | 4245 | else if (fdh != NULL) |
8387904d | 4246 | { |
35b0ce59 AM |
4247 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4248 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4249 | if (entry_vis < descr_vis) | |
4250 | fdh->elf.other += entry_vis - descr_vis; | |
4251 | else if (entry_vis > descr_vis) | |
4252 | eh->elf.other += descr_vis - entry_vis; | |
4253 | ||
e87d886e AM |
4254 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4255 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4256 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4257 | { |
4258 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4259 | eh->was_undefined = 1; | |
4260 | htab->twiddled_syms = 1; | |
4261 | } | |
8387904d | 4262 | } |
99877b66 | 4263 | |
8387904d AM |
4264 | return TRUE; |
4265 | } | |
4266 | ||
b3fac117 AM |
4267 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4268 | ||
8387904d | 4269 | static bfd_boolean |
b3fac117 | 4270 | ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4271 | { |
99877b66 | 4272 | struct ppc_link_hash_table *htab; |
b3fac117 | 4273 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4274 | |
99877b66 | 4275 | htab = ppc_hash_table (info); |
ee75fd95 | 4276 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4277 | return TRUE; |
4278 | ||
b3fac117 AM |
4279 | if (is_ppc64_elf_target (ibfd->xvec)) |
4280 | { | |
4281 | p = &htab->dot_syms; | |
4282 | while ((eh = *p) != NULL) | |
4283 | { | |
4284 | *p = NULL; | |
4285 | if (!add_symbol_adjust (eh, info)) | |
4286 | return FALSE; | |
4287 | p = &eh->u.next_dot_sym; | |
4288 | } | |
4289 | } | |
4290 | ||
4291 | /* Clear the list for non-ppc64 input files. */ | |
4292 | p = &htab->dot_syms; | |
4293 | while ((eh = *p) != NULL) | |
4294 | { | |
4295 | *p = NULL; | |
4296 | p = &eh->u.next_dot_sym; | |
4297 | } | |
99877b66 AM |
4298 | |
4299 | /* We need to fix the undefs list for any syms we have twiddled to | |
4300 | undef_weak. */ | |
4301 | if (htab->twiddled_syms) | |
4302 | { | |
77cfaee6 | 4303 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4304 | htab->twiddled_syms = 0; |
4305 | } | |
b3fac117 | 4306 | return TRUE; |
8387904d AM |
4307 | } |
4308 | ||
97fed1c9 JJ |
4309 | /* Undo hash table changes when an --as-needed input file is determined |
4310 | not to be needed. */ | |
4311 | ||
4312 | static bfd_boolean | |
4313 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4314 | struct bfd_link_info *info) | |
4315 | { | |
4316 | ppc_hash_table (info)->dot_syms = NULL; | |
4317 | return TRUE; | |
4318 | } | |
4319 | ||
411e1bfb | 4320 | static bfd_boolean |
4ce794b7 AM |
4321 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4322 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4323 | { |
4324 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4325 | char *local_got_tls_masks; |
411e1bfb AM |
4326 | |
4327 | if (local_got_ents == NULL) | |
4328 | { | |
4329 | bfd_size_type size = symtab_hdr->sh_info; | |
4330 | ||
e7b938ca | 4331 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4332 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4333 | if (local_got_ents == NULL) |
4334 | return FALSE; | |
4335 | elf_local_got_ents (abfd) = local_got_ents; | |
4336 | } | |
4337 | ||
4338 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4339 | { | |
4340 | struct got_entry *ent; | |
4341 | ||
4342 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4343 | if (ent->addend == r_addend |
4344 | && ent->owner == abfd | |
4345 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4346 | break; |
4347 | if (ent == NULL) | |
4348 | { | |
4349 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4350 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4351 | if (ent == NULL) |
4352 | return FALSE; | |
4353 | ent->next = local_got_ents[r_symndx]; | |
4354 | ent->addend = r_addend; | |
e717da7e | 4355 | ent->owner = abfd; |
411e1bfb AM |
4356 | ent->tls_type = tls_type; |
4357 | ent->got.refcount = 0; | |
4358 | local_got_ents[r_symndx] = ent; | |
4359 | } | |
4360 | ent->got.refcount += 1; | |
4361 | } | |
4362 | ||
e7b938ca AM |
4363 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4364 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4365 | return TRUE; |
65f38f15 AM |
4366 | } |
4367 | ||
411e1bfb | 4368 | static bfd_boolean |
4ce794b7 | 4369 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4370 | { |
411e1bfb | 4371 | struct plt_entry *ent; |
1e2f5b6e | 4372 | |
411e1bfb AM |
4373 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4374 | if (ent->addend == addend) | |
4375 | break; | |
4376 | if (ent == NULL) | |
1e2f5b6e | 4377 | { |
411e1bfb | 4378 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4379 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4380 | if (ent == NULL) |
4381 | return FALSE; | |
4382 | ent->next = eh->elf.plt.plist; | |
4383 | ent->addend = addend; | |
4384 | ent->plt.refcount = 0; | |
4385 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4386 | } |
411e1bfb | 4387 | ent->plt.refcount += 1; |
f5385ebf | 4388 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4389 | if (eh->elf.root.root.string[0] == '.' |
4390 | && eh->elf.root.root.string[1] != '\0') | |
4391 | eh->is_func = 1; | |
b34976b6 | 4392 | return TRUE; |
1e2f5b6e AM |
4393 | } |
4394 | ||
5bd4f169 | 4395 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4396 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4397 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4398 | |
b34976b6 | 4399 | static bfd_boolean |
4ce794b7 AM |
4400 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4401 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4402 | { |
65f38f15 | 4403 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4404 | Elf_Internal_Shdr *symtab_hdr; |
4405 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4406 | const Elf_Internal_Rela *rel; | |
4407 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4408 | asection *sreloc; |
1e2f5b6e | 4409 | asection **opd_sym_map; |
5bd4f169 | 4410 | |
1049f94e | 4411 | if (info->relocatable) |
b34976b6 | 4412 | return TRUE; |
5bd4f169 | 4413 | |
680a3378 AM |
4414 | /* Don't do anything special with non-loaded, non-alloced sections. |
4415 | In particular, any relocs in such sections should not affect GOT | |
4416 | and PLT reference counting (ie. we don't allow them to create GOT | |
4417 | or PLT entries), there's no possibility or desire to optimize TLS | |
4418 | relocs, and there's not much point in propagating relocs to shared | |
4419 | libs that the dynamic linker won't relocate. */ | |
4420 | if ((sec->flags & SEC_ALLOC) == 0) | |
4421 | return TRUE; | |
4422 | ||
65f38f15 | 4423 | htab = ppc_hash_table (info); |
5bd4f169 | 4424 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4425 | |
4426 | sym_hashes = elf_sym_hashes (abfd); | |
4427 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4428 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4429 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4430 | |
4431 | sreloc = NULL; | |
1e2f5b6e AM |
4432 | opd_sym_map = NULL; |
4433 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4434 | { | |
4435 | /* Garbage collection needs some extra help with .opd sections. | |
4436 | We don't want to necessarily keep everything referenced by | |
4437 | relocs in .opd, as that would keep all functions. Instead, | |
4438 | if we reference an .opd symbol (a function descriptor), we | |
4439 | want to keep the function code symbol's section. This is | |
4440 | easy for global symbols, but for local syms we need to keep | |
4441 | information about the associated function section. Later, if | |
4442 | edit_opd deletes entries, we'll use this array to adjust | |
4443 | local syms in .opd. */ | |
4444 | union opd_info { | |
4445 | asection *func_section; | |
4446 | long entry_adjust; | |
4447 | }; | |
4448 | bfd_size_type amt; | |
4449 | ||
3f764659 | 4450 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4451 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4452 | if (opd_sym_map == NULL) |
b34976b6 | 4453 | return FALSE; |
7c8fe5c4 AM |
4454 | ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map; |
4455 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
4456 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4457 | } |
5bd4f169 | 4458 | |
82bd7b59 AM |
4459 | if (htab->sfpr == NULL |
4460 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4461 | return FALSE; |
82bd7b59 | 4462 | |
5bd4f169 AM |
4463 | rel_end = relocs + sec->reloc_count; |
4464 | for (rel = relocs; rel < rel_end; rel++) | |
4465 | { | |
4466 | unsigned long r_symndx; | |
4467 | struct elf_link_hash_entry *h; | |
04c9666a | 4468 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4469 | int tls_type = 0; |
7c8fe5c4 | 4470 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4471 | |
4472 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4473 | if (r_symndx < symtab_hdr->sh_info) | |
4474 | h = NULL; | |
4475 | else | |
973a3492 L |
4476 | { |
4477 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4478 | while (h->root.type == bfd_link_hash_indirect | |
4479 | || h->root.type == bfd_link_hash_warning) | |
4480 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4481 | } | |
5bd4f169 | 4482 | |
4ce794b7 | 4483 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4484 | switch (r_type) |
5bd4f169 | 4485 | { |
411e1bfb AM |
4486 | case R_PPC64_GOT_TLSLD16: |
4487 | case R_PPC64_GOT_TLSLD16_LO: | |
4488 | case R_PPC64_GOT_TLSLD16_HI: | |
4489 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4490 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4491 | goto dogottls; |
4492 | ||
4493 | case R_PPC64_GOT_TLSGD16: | |
4494 | case R_PPC64_GOT_TLSGD16_LO: | |
4495 | case R_PPC64_GOT_TLSGD16_HI: | |
4496 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4497 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4498 | goto dogottls; |
4499 | ||
4500 | case R_PPC64_GOT_TPREL16_DS: | |
4501 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4502 | case R_PPC64_GOT_TPREL16_HI: | |
4503 | case R_PPC64_GOT_TPREL16_HA: | |
4504 | if (info->shared) | |
4505 | info->flags |= DF_STATIC_TLS; | |
4506 | tls_type = TLS_TLS | TLS_TPREL; | |
4507 | goto dogottls; | |
4508 | ||
4509 | case R_PPC64_GOT_DTPREL16_DS: | |
4510 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4511 | case R_PPC64_GOT_DTPREL16_HI: | |
4512 | case R_PPC64_GOT_DTPREL16_HA: | |
4513 | tls_type = TLS_TLS | TLS_DTPREL; | |
4514 | dogottls: | |
4515 | sec->has_tls_reloc = 1; | |
4516 | /* Fall thru */ | |
4517 | ||
5bd4f169 | 4518 | case R_PPC64_GOT16: |
5bd4f169 | 4519 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4520 | case R_PPC64_GOT16_HA: |
4521 | case R_PPC64_GOT16_HI: | |
4522 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4523 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4524 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4525 | sec->has_toc_reloc = 1; |
e717da7e AM |
4526 | if (ppc64_elf_tdata (abfd)->got == NULL |
4527 | && !create_got_section (abfd, info)) | |
b34976b6 | 4528 | return FALSE; |
5bd4f169 AM |
4529 | |
4530 | if (h != NULL) | |
4531 | { | |
411e1bfb AM |
4532 | struct ppc_link_hash_entry *eh; |
4533 | struct got_entry *ent; | |
65f38f15 | 4534 | |
411e1bfb AM |
4535 | eh = (struct ppc_link_hash_entry *) h; |
4536 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4537 | if (ent->addend == rel->r_addend | |
e717da7e | 4538 | && ent->owner == abfd |
411e1bfb AM |
4539 | && ent->tls_type == tls_type) |
4540 | break; | |
4541 | if (ent == NULL) | |
5bd4f169 | 4542 | { |
411e1bfb | 4543 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4544 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4545 | if (ent == NULL) |
b34976b6 | 4546 | return FALSE; |
411e1bfb AM |
4547 | ent->next = eh->elf.got.glist; |
4548 | ent->addend = rel->r_addend; | |
e717da7e | 4549 | ent->owner = abfd; |
411e1bfb AM |
4550 | ent->tls_type = tls_type; |
4551 | ent->got.refcount = 0; | |
4552 | eh->elf.got.glist = ent; | |
5bd4f169 | 4553 | } |
411e1bfb | 4554 | ent->got.refcount += 1; |
e7b938ca | 4555 | eh->tls_mask |= tls_type; |
5bd4f169 | 4556 | } |
411e1bfb AM |
4557 | else |
4558 | /* This is a global offset table entry for a local symbol. */ | |
4559 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4560 | rel->r_addend, tls_type)) | |
4561 | return FALSE; | |
5bd4f169 AM |
4562 | break; |
4563 | ||
5bd4f169 | 4564 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4565 | case R_PPC64_PLT16_HI: |
4566 | case R_PPC64_PLT16_LO: | |
4567 | case R_PPC64_PLT32: | |
4568 | case R_PPC64_PLT64: | |
5bd4f169 | 4569 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4570 | actually build the entry in adjust_dynamic_symbol, |
4571 | because this might be a case of linking PIC code without | |
4572 | linking in any dynamic objects, in which case we don't | |
4573 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4574 | if (h == NULL) |
4575 | { | |
4576 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4577 | table entry for a local symbol. */ |
5bd4f169 | 4578 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4579 | return FALSE; |
5bd4f169 | 4580 | } |
411e1bfb AM |
4581 | else |
4582 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4583 | rel->r_addend)) | |
4584 | return FALSE; | |
5bd4f169 AM |
4585 | break; |
4586 | ||
4587 | /* The following relocations don't need to propagate the | |
4588 | relocation if linking a shared object since they are | |
4589 | section relative. */ | |
4590 | case R_PPC64_SECTOFF: | |
4591 | case R_PPC64_SECTOFF_LO: | |
4592 | case R_PPC64_SECTOFF_HI: | |
4593 | case R_PPC64_SECTOFF_HA: | |
4594 | case R_PPC64_SECTOFF_DS: | |
4595 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4596 | case R_PPC64_DTPREL16: |
4597 | case R_PPC64_DTPREL16_LO: | |
4598 | case R_PPC64_DTPREL16_HI: | |
4599 | case R_PPC64_DTPREL16_HA: | |
4600 | case R_PPC64_DTPREL16_DS: | |
4601 | case R_PPC64_DTPREL16_LO_DS: | |
4602 | case R_PPC64_DTPREL16_HIGHER: | |
4603 | case R_PPC64_DTPREL16_HIGHERA: | |
4604 | case R_PPC64_DTPREL16_HIGHEST: | |
4605 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4606 | break; |
4607 | ||
ad8e1ba5 AM |
4608 | /* Nor do these. */ |
4609 | case R_PPC64_TOC16: | |
4610 | case R_PPC64_TOC16_LO: | |
4611 | case R_PPC64_TOC16_HI: | |
4612 | case R_PPC64_TOC16_HA: | |
4613 | case R_PPC64_TOC16_DS: | |
4614 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4615 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4616 | break; |
4617 | ||
5bd4f169 AM |
4618 | /* This relocation describes the C++ object vtable hierarchy. |
4619 | Reconstruct it for later use during GC. */ | |
4620 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4621 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4622 | return FALSE; |
5bd4f169 AM |
4623 | break; |
4624 | ||
4625 | /* This relocation describes which C++ vtable entries are actually | |
4626 | used. Record for later use during GC. */ | |
4627 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
4628 | BFD_ASSERT (h != NULL); |
4629 | if (h != NULL | |
4630 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 4631 | return FALSE; |
5bd4f169 AM |
4632 | break; |
4633 | ||
721956f4 AM |
4634 | case R_PPC64_REL14: |
4635 | case R_PPC64_REL14_BRTAKEN: | |
4636 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4637 | { |
4638 | asection *dest = NULL; | |
4639 | ||
4640 | /* Heuristic: If jumping outside our section, chances are | |
4641 | we are going to need a stub. */ | |
4642 | if (h != NULL) | |
4643 | { | |
4644 | /* If the sym is weak it may be overridden later, so | |
4645 | don't assume we know where a weak sym lives. */ | |
4646 | if (h->root.type == bfd_link_hash_defined) | |
4647 | dest = h->root.u.def.section; | |
4648 | } | |
4649 | else | |
4650 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4651 | sec, r_symndx); | |
4652 | if (dest != sec) | |
7c8fe5c4 | 4653 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4654 | } |
721956f4 AM |
4655 | /* Fall through. */ |
4656 | ||
5d1634d7 | 4657 | case R_PPC64_REL24: |
8387904d | 4658 | if (h != NULL) |
5d1634d7 AM |
4659 | { |
4660 | /* We may need a .plt entry if the function this reloc | |
4661 | refers to is in a shared lib. */ | |
411e1bfb AM |
4662 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4663 | rel->r_addend)) | |
4664 | return FALSE; | |
8387904d AM |
4665 | if (h == &htab->tls_get_addr->elf |
4666 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4667 | sec->has_tls_reloc = 1; |
8387904d | 4668 | else if (htab->tls_get_addr == NULL |
0112cd26 | 4669 | && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr") |
a48ebf4d AM |
4670 | && (h->root.root.string[15] == 0 |
4671 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4672 | { |
8387904d AM |
4673 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4674 | sec->has_tls_reloc = 1; | |
4675 | } | |
4676 | else if (htab->tls_get_addr_fd == NULL | |
0112cd26 | 4677 | && CONST_STRNEQ (h->root.root.string, "__tls_get_addr") |
8387904d AM |
4678 | && (h->root.root.string[14] == 0 |
4679 | || h->root.root.string[14] == '@')) | |
4680 | { | |
4681 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4682 | sec->has_tls_reloc = 1; |
4683 | } | |
4684 | } | |
4685 | break; | |
4686 | ||
4687 | case R_PPC64_TPREL64: | |
4688 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4689 | if (info->shared) | |
4690 | info->flags |= DF_STATIC_TLS; | |
4691 | goto dotlstoc; | |
4692 | ||
4693 | case R_PPC64_DTPMOD64: | |
4694 | if (rel + 1 < rel_end | |
4695 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4696 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4697 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4698 | else |
951fd09b | 4699 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4700 | goto dotlstoc; |
4701 | ||
4702 | case R_PPC64_DTPREL64: | |
4703 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4704 | if (rel != relocs | |
4705 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4706 | && rel[-1].r_offset == rel->r_offset - 8) | |
4707 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4708 | Don't mark with TLS_DTPREL. */ | |
4709 | goto dodyn; | |
4710 | ||
4711 | dotlstoc: | |
4712 | sec->has_tls_reloc = 1; | |
4713 | if (h != NULL) | |
4714 | { | |
4715 | struct ppc_link_hash_entry *eh; | |
4716 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4717 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4718 | } |
4719 | else | |
4720 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4721 | rel->r_addend, tls_type)) | |
4722 | return FALSE; | |
4723 | ||
7c8fe5c4 AM |
4724 | ppc64_sec = ppc64_elf_section_data (sec); |
4725 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4726 | { |
e7b938ca | 4727 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4728 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
7c8fe5c4 AM |
4729 | ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt); |
4730 | if (ppc64_sec->u.t_symndx == NULL) | |
411e1bfb | 4731 | return FALSE; |
7c8fe5c4 AM |
4732 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4733 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4734 | } |
4735 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
7c8fe5c4 | 4736 | ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx; |
951fd09b AM |
4737 | |
4738 | /* Mark the second slot of a GD or LD entry. | |
4739 | -1 to indicate GD and -2 to indicate LD. */ | |
4740 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
7c8fe5c4 | 4741 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4742 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
7c8fe5c4 | 4743 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4744 | goto dodyn; |
4745 | ||
4746 | case R_PPC64_TPREL16: | |
4747 | case R_PPC64_TPREL16_LO: | |
4748 | case R_PPC64_TPREL16_HI: | |
4749 | case R_PPC64_TPREL16_HA: | |
4750 | case R_PPC64_TPREL16_DS: | |
4751 | case R_PPC64_TPREL16_LO_DS: | |
4752 | case R_PPC64_TPREL16_HIGHER: | |
4753 | case R_PPC64_TPREL16_HIGHERA: | |
4754 | case R_PPC64_TPREL16_HIGHEST: | |
4755 | case R_PPC64_TPREL16_HIGHESTA: | |
4756 | if (info->shared) | |
4757 | { | |
4758 | info->flags |= DF_STATIC_TLS; | |
4759 | goto dodyn; | |
5d1634d7 AM |
4760 | } |
4761 | break; | |
4762 | ||
e86ce104 | 4763 | case R_PPC64_ADDR64: |
1e2f5b6e | 4764 | if (opd_sym_map != NULL |
1e2f5b6e | 4765 | && rel + 1 < rel_end |
4ce794b7 | 4766 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4767 | { |
8387904d AM |
4768 | if (h != NULL) |
4769 | { | |
4770 | if (h->root.root.string[0] == '.' | |
4771 | && h->root.root.string[1] != 0 | |
4772 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4773 | ; | |
4774 | else | |
4775 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4776 | } | |
4777 | else | |
4778 | { | |
4779 | asection *s; | |
1e2f5b6e | 4780 | |
8387904d AM |
4781 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4782 | r_symndx); | |
4783 | if (s == NULL) | |
4784 | return FALSE; | |
4785 | else if (s != sec) | |
3f764659 | 4786 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4787 | } |
1e2f5b6e | 4788 | } |
e86ce104 AM |
4789 | /* Fall through. */ |
4790 | ||
04c9666a | 4791 | case R_PPC64_REL30: |
5bd4f169 | 4792 | case R_PPC64_REL32: |
04c9666a | 4793 | case R_PPC64_REL64: |
65f38f15 AM |
4794 | case R_PPC64_ADDR14: |
4795 | case R_PPC64_ADDR14_BRNTAKEN: | |
4796 | case R_PPC64_ADDR14_BRTAKEN: | |
4797 | case R_PPC64_ADDR16: | |
4798 | case R_PPC64_ADDR16_DS: | |
4799 | case R_PPC64_ADDR16_HA: | |
4800 | case R_PPC64_ADDR16_HI: | |
4801 | case R_PPC64_ADDR16_HIGHER: | |
4802 | case R_PPC64_ADDR16_HIGHERA: | |
4803 | case R_PPC64_ADDR16_HIGHEST: | |
4804 | case R_PPC64_ADDR16_HIGHESTA: | |
4805 | case R_PPC64_ADDR16_LO: | |
4806 | case R_PPC64_ADDR16_LO_DS: | |
4807 | case R_PPC64_ADDR24: | |
65f38f15 | 4808 | case R_PPC64_ADDR32: |
65f38f15 AM |
4809 | case R_PPC64_UADDR16: |
4810 | case R_PPC64_UADDR32: | |
4811 | case R_PPC64_UADDR64: | |
5bd4f169 | 4812 | case R_PPC64_TOC: |
81848ca0 AM |
4813 | if (h != NULL && !info->shared) |
4814 | /* We may need a copy reloc. */ | |
f5385ebf | 4815 | h->non_got_ref = 1; |
81848ca0 | 4816 | |
41bd81ab | 4817 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4818 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4819 | break; |
e86ce104 | 4820 | |
65f38f15 AM |
4821 | /* If we are creating a shared library, and this is a reloc |
4822 | against a global symbol, or a non PC relative reloc | |
4823 | against a local symbol, then we need to copy the reloc | |
4824 | into the shared library. However, if we are linking with | |
4825 | -Bsymbolic, we do not need to copy a reloc against a | |
4826 | global symbol which is defined in an object we are | |
4827 | including in the link (i.e., DEF_REGULAR is set). At | |
4828 | this point we have not seen all the input files, so it is | |
4829 | possible that DEF_REGULAR is not set now but will be set | |
4830 | later (it is never cleared). In case of a weak definition, | |
4831 | DEF_REGULAR may be cleared later by a strong definition in | |
4832 | a shared library. We account for that possibility below by | |
f4656909 | 4833 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4834 | table entry. A similar situation occurs when creating |
4835 | shared libraries and symbol visibility changes render the | |
4836 | symbol local. | |
4837 | ||
4838 | If on the other hand, we are creating an executable, we | |
4839 | may need to keep relocations for symbols satisfied by a | |
4840 | dynamic library if we manage to avoid copy relocs for the | |
4841 | symbol. */ | |
411e1bfb | 4842 | dodyn: |
65f38f15 | 4843 | if ((info->shared |
411e1bfb | 4844 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4845 | || (h != NULL |
4846 | && (! info->symbolic | |
4847 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4848 | || !h->def_regular)))) |
f4656909 AM |
4849 | || (ELIMINATE_COPY_RELOCS |
4850 | && !info->shared | |
65f38f15 AM |
4851 | && h != NULL |
4852 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4853 | || !h->def_regular))) |
5bd4f169 | 4854 | { |
ec338859 AM |
4855 | struct ppc_dyn_relocs *p; |
4856 | struct ppc_dyn_relocs **head; | |
4857 | ||
65f38f15 AM |
4858 | /* We must copy these reloc types into the output file. |
4859 | Create a reloc section in dynobj and make room for | |
4860 | this reloc. */ | |
5bd4f169 AM |
4861 | if (sreloc == NULL) |
4862 | { | |
4863 | const char *name; | |
65f38f15 | 4864 | bfd *dynobj; |
5bd4f169 AM |
4865 | |
4866 | name = (bfd_elf_string_from_elf_section | |
4867 | (abfd, | |
4868 | elf_elfheader (abfd)->e_shstrndx, | |
4869 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4870 | if (name == NULL) | |
b34976b6 | 4871 | return FALSE; |
5bd4f169 | 4872 | |
0112cd26 | 4873 | if (! CONST_STRNEQ (name, ".rela") |
65f38f15 AM |
4874 | || strcmp (bfd_get_section_name (abfd, sec), |
4875 | name + 5) != 0) | |
4876 | { | |
4877 | (*_bfd_error_handler) | |
d003868e AM |
4878 | (_("%B: bad relocation section name `%s\'"), |
4879 | abfd, name); | |
5d1634d7 | 4880 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4881 | } |
4882 | ||
65f38f15 | 4883 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4884 | sreloc = bfd_get_section_by_name (dynobj, name); |
4885 | if (sreloc == NULL) | |
4886 | { | |
4887 | flagword flags; | |
4888 | ||
5bd4f169 | 4889 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4890 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4891 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4892 | sreloc = bfd_make_section_with_flags (dynobj, |
4893 | name, | |
4894 | flags); | |
5bd4f169 | 4895 | if (sreloc == NULL |
65f38f15 | 4896 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4897 | return FALSE; |
5bd4f169 | 4898 | } |
65f38f15 | 4899 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4900 | } |
4901 | ||
65f38f15 AM |
4902 | /* If this is a global symbol, we count the number of |
4903 | relocations we need for this symbol. */ | |
4904 | if (h != NULL) | |
4905 | { | |
ec338859 | 4906 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4907 | } |
4908 | else | |
4909 | { | |
ec338859 AM |
4910 | /* Track dynamic relocs needed for local syms too. |
4911 | We really need local syms available to do this | |
4912 | easily. Oh well. */ | |
4913 | ||
4914 | asection *s; | |
6edfbbad DJ |
4915 | void *vpp; |
4916 | ||
ec338859 AM |
4917 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4918 | sec, r_symndx); | |
4919 | if (s == NULL) | |
b34976b6 | 4920 | return FALSE; |
ec338859 | 4921 | |
6edfbbad DJ |
4922 | vpp = &elf_section_data (s)->local_dynrel; |
4923 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4924 | } |
ec338859 AM |
4925 | |
4926 | p = *head; | |
4927 | if (p == NULL || p->sec != sec) | |
4928 | { | |
4ce794b7 | 4929 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4930 | if (p == NULL) |
b34976b6 | 4931 | return FALSE; |
ec338859 AM |
4932 | p->next = *head; |
4933 | *head = p; | |
4934 | p->sec = sec; | |
4935 | p->count = 0; | |
4936 | p->pc_count = 0; | |
4937 | } | |
4938 | ||
4939 | p->count += 1; | |
411e1bfb | 4940 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4941 | p->pc_count += 1; |
65f38f15 | 4942 | } |
5bd4f169 | 4943 | break; |
65f38f15 AM |
4944 | |
4945 | default: | |
96e0dda4 | 4946 | break; |
5bd4f169 AM |
4947 | } |
4948 | } | |
4949 | ||
b34976b6 | 4950 | return TRUE; |
5bd4f169 AM |
4951 | } |
4952 | ||
8387904d AM |
4953 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4954 | of the code entry point, and its section. */ | |
4955 | ||
4956 | static bfd_vma | |
4957 | opd_entry_value (asection *opd_sec, | |
4958 | bfd_vma offset, | |
4959 | asection **code_sec, | |
4960 | bfd_vma *code_off) | |
4961 | { | |
4962 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4963 | Elf_Internal_Rela *relocs; |
8387904d | 4964 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4965 | bfd_vma val; |
8387904d | 4966 | |
4b85d634 AM |
4967 | /* No relocs implies we are linking a --just-symbols object. */ |
4968 | if (opd_sec->reloc_count == 0) | |
4969 | { | |
4970 | bfd_vma val; | |
4971 | ||
4972 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4973 | return (bfd_vma) -1; | |
3b36f7e6 | 4974 | |
4b85d634 AM |
4975 | if (code_sec != NULL) |
4976 | { | |
4977 | asection *sec, *likely = NULL; | |
4978 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4979 | if (sec->vma <= val | |
4980 | && (sec->flags & SEC_LOAD) != 0 | |
4981 | && (sec->flags & SEC_ALLOC) != 0) | |
4982 | likely = sec; | |
4983 | if (likely != NULL) | |
4984 | { | |
4985 | *code_sec = likely; | |
4986 | if (code_off != NULL) | |
4987 | *code_off = val - likely->vma; | |
4988 | } | |
4989 | } | |
4990 | return val; | |
4991 | } | |
4992 | ||
8860955f AM |
4993 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4994 | if (relocs == NULL) | |
4995 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4996 | |
8387904d | 4997 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4998 | lo = relocs; |
8387904d AM |
4999 | BFD_ASSERT (lo != NULL); |
5000 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5001 | val = (bfd_vma) -1; |
8387904d AM |
5002 | while (lo < hi) |
5003 | { | |
5004 | look = lo + (hi - lo) / 2; | |
5005 | if (look->r_offset < offset) | |
5006 | lo = look + 1; | |
5007 | else if (look->r_offset > offset) | |
5008 | hi = look; | |
5009 | else | |
5010 | { | |
5011 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
5012 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
5013 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5014 | { | |
5015 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5016 | asection *sec; |
5017 | ||
5018 | if (symndx < symtab_hdr->sh_info) | |
5019 | { | |
5020 | Elf_Internal_Sym *sym; | |
5021 | ||
5022 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5023 | if (sym == NULL) | |
5024 | { | |
5025 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5026 | symtab_hdr->sh_info, | |
5027 | 0, NULL, NULL, NULL); | |
5028 | if (sym == NULL) | |
645ea6a9 | 5029 | break; |
8387904d AM |
5030 | symtab_hdr->contents = (bfd_byte *) sym; |
5031 | } | |
5032 | ||
5033 | sym += symndx; | |
5034 | val = sym->st_value; | |
5035 | sec = NULL; | |
5036 | if ((sym->st_shndx != SHN_UNDEF | |
5037 | && sym->st_shndx < SHN_LORESERVE) | |
5038 | || sym->st_shndx > SHN_HIRESERVE) | |
5039 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5040 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5041 | } | |
5042 | else | |
5043 | { | |
5044 | struct elf_link_hash_entry **sym_hashes; | |
5045 | struct elf_link_hash_entry *rh; | |
5046 | ||
5047 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5048 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5049 | while (rh->root.type == bfd_link_hash_indirect | |
5050 | || rh->root.type == bfd_link_hash_warning) | |
5051 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5052 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5053 | || rh->root.type == bfd_link_hash_defweak); | |
5054 | val = rh->root.u.def.value; | |
5055 | sec = rh->root.u.def.section; | |
5056 | } | |
5057 | val += look->r_addend; | |
5058 | if (code_off != NULL) | |
5059 | *code_off = val; | |
5060 | if (code_sec != NULL) | |
5061 | *code_sec = sec; | |
5062 | if (sec != NULL && sec->output_section != NULL) | |
5063 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5064 | } |
5065 | break; | |
5066 | } | |
5067 | } | |
645ea6a9 | 5068 | |
645ea6a9 | 5069 | return val; |
8387904d AM |
5070 | } |
5071 | ||
64d03ab5 AM |
5072 | /* Mark sections containing dynamically referenced symbols. When |
5073 | building shared libraries, we must assume that any visible symbol is | |
5074 | referenced. */ | |
5075 | ||
5076 | static bfd_boolean | |
5077 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5078 | { | |
5079 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5080 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5081 | ||
5082 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5083 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5084 | ||
5085 | /* Dynamic linking info is on the func descriptor sym. */ | |
5086 | if (eh->oh != NULL | |
5087 | && eh->oh->is_func_descriptor | |
5088 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5089 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5090 | eh = eh->oh; | |
5091 | ||
5092 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5093 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5094 | && (eh->elf.ref_dynamic | |
5095 | || (!info->executable | |
5096 | && eh->elf.def_regular | |
5097 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5098 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5099 | { | |
5100 | asection *code_sec; | |
5101 | ||
5102 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5103 | ||
5104 | /* Function descriptor syms cause the associated | |
5105 | function code sym section to be marked. */ | |
5106 | if (eh->is_func_descriptor | |
5107 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5108 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5109 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5110 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5111 | && opd_entry_value (eh->elf.root.u.def.section, | |
5112 | eh->elf.root.u.def.value, | |
5113 | &code_sec, NULL) != (bfd_vma) -1) | |
5114 | code_sec->flags |= SEC_KEEP; | |
5115 | } | |
5116 | ||
5117 | return TRUE; | |
5118 | } | |
5119 | ||
5bd4f169 AM |
5120 | /* Return the section that should be marked against GC for a given |
5121 | relocation. */ | |
5122 | ||
5123 | static asection * | |
4ce794b7 | 5124 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 5125 | struct bfd_link_info *info, |
4ce794b7 AM |
5126 | Elf_Internal_Rela *rel, |
5127 | struct elf_link_hash_entry *h, | |
5128 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5129 | { |
ccfa59ea AM |
5130 | asection *rsec; |
5131 | ||
5132 | /* First mark all our entry sym sections. */ | |
5133 | if (info->gc_sym_list != NULL) | |
5134 | { | |
5135 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5136 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
5137 | ||
5138 | info->gc_sym_list = NULL; | |
b56cbdb9 | 5139 | for (; sym != NULL; sym = sym->next) |
ccfa59ea AM |
5140 | { |
5141 | struct ppc_link_hash_entry *eh; | |
5142 | ||
5143 | eh = (struct ppc_link_hash_entry *) | |
5144 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5145 | if (eh == NULL) | |
5146 | continue; | |
5147 | if (eh->elf.root.type != bfd_link_hash_defined | |
5148 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5149 | continue; | |
5150 | ||
c4f68ce3 AM |
5151 | if (eh->is_func_descriptor |
5152 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5153 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5154 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
5155 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5156 | && opd_entry_value (eh->elf.root.u.def.section, | |
5157 | eh->elf.root.u.def.value, | |
5158 | &rsec, NULL) != (bfd_vma) -1) | |
5159 | ; | |
ccfa59ea AM |
5160 | else |
5161 | continue; | |
5162 | ||
5163 | if (!rsec->gc_mark) | |
5164 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5165 | ||
5166 | rsec = eh->elf.root.u.def.section; | |
5167 | if (!rsec->gc_mark) | |
5168 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
ccfa59ea | 5169 | } |
ccfa59ea AM |
5170 | } |
5171 | ||
5172 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
5173 | function sections, as all functions are referenced in .opd. */ | |
5174 | rsec = NULL; | |
5175 | if (get_opd_info (sec) != NULL) | |
5176 | return rsec; | |
1e2f5b6e | 5177 | |
5bd4f169 AM |
5178 | if (h != NULL) |
5179 | { | |
04c9666a | 5180 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5181 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5182 | |
4ce794b7 | 5183 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5184 | switch (r_type) |
5bd4f169 AM |
5185 | { |
5186 | case R_PPC64_GNU_VTINHERIT: | |
5187 | case R_PPC64_GNU_VTENTRY: | |
5188 | break; | |
5189 | ||
5190 | default: | |
5191 | switch (h->root.type) | |
5192 | { | |
5193 | case bfd_link_hash_defined: | |
5194 | case bfd_link_hash_defweak: | |
ccfa59ea | 5195 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5196 | if (eh->oh != NULL |
5197 | && eh->oh->is_func_descriptor | |
5198 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5199 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5200 | eh = eh->oh; |
1e2f5b6e AM |
5201 | |
5202 | /* Function descriptor syms cause the associated | |
5203 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5204 | if (eh->is_func_descriptor |
5205 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5206 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5207 | { |
5208 | /* They also mark their opd section. */ | |
5209 | if (!eh->elf.root.u.def.section->gc_mark) | |
5210 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5211 | ppc64_elf_gc_mark_hook); | |
5212 | ||
5213 | rsec = eh->oh->elf.root.u.def.section; | |
5214 | } | |
8387904d AM |
5215 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5216 | && opd_entry_value (eh->elf.root.u.def.section, | |
5217 | eh->elf.root.u.def.value, | |
5218 | &rsec, NULL) != (bfd_vma) -1) | |
5219 | { | |
5220 | if (!eh->elf.root.u.def.section->gc_mark) | |
5221 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5222 | ppc64_elf_gc_mark_hook); | |
5223 | } | |
ccfa59ea | 5224 | else |
1e2f5b6e AM |
5225 | rsec = h->root.u.def.section; |
5226 | break; | |
5bd4f169 AM |
5227 | |
5228 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5229 | rsec = h->root.u.c.p->section; |
5230 | break; | |
5bd4f169 AM |
5231 | |
5232 | default: | |
5233 | break; | |
5234 | } | |
5235 | } | |
5236 | } | |
5237 | else | |
5238 | { | |
1e2f5b6e AM |
5239 | asection **opd_sym_section; |
5240 | ||
5241 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5242 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5243 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5244 | { |
5245 | if (!rsec->gc_mark) | |
5246 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5247 | ||
b4f4e59f | 5248 | rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5249 | } |
5bd4f169 AM |
5250 | } |
5251 | ||
1e2f5b6e | 5252 | return rsec; |
5bd4f169 AM |
5253 | } |
5254 | ||
65f38f15 AM |
5255 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5256 | section being removed. */ | |
5bd4f169 | 5257 | |
b34976b6 | 5258 | static bfd_boolean |
4ce794b7 AM |
5259 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5260 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5261 | { |
411e1bfb | 5262 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5263 | Elf_Internal_Shdr *symtab_hdr; |
5264 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5265 | struct got_entry **local_got_ents; |
5bd4f169 | 5266 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5267 | |
680a3378 AM |
5268 | if ((sec->flags & SEC_ALLOC) == 0) |
5269 | return TRUE; | |
5270 | ||
ec338859 AM |
5271 | elf_section_data (sec)->local_dynrel = NULL; |
5272 | ||
411e1bfb | 5273 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5274 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5275 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5276 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5277 | |
5278 | relend = relocs + sec->reloc_count; | |
5279 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5280 | { |
5281 | unsigned long r_symndx; | |
04c9666a | 5282 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5283 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5284 | char tls_type = 0; |
5bd4f169 | 5285 | |
a33d1f77 | 5286 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5287 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5288 | if (r_symndx >= symtab_hdr->sh_info) |
5289 | { | |
5290 | struct ppc_link_hash_entry *eh; | |
5291 | struct ppc_dyn_relocs **pp; | |
5292 | struct ppc_dyn_relocs *p; | |
5293 | ||
5294 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5295 | while (h->root.type == bfd_link_hash_indirect |
5296 | || h->root.type == bfd_link_hash_warning) | |
5297 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5298 | eh = (struct ppc_link_hash_entry *) h; |
5299 | ||
5300 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5301 | if (p->sec == sec) | |
5302 | { | |
5303 | /* Everything must go for SEC. */ | |
5304 | *pp = p->next; | |
5305 | break; | |
5306 | } | |
5307 | } | |
5308 | ||
a33d1f77 AM |
5309 | switch (r_type) |
5310 | { | |
411e1bfb AM |
5311 | case R_PPC64_GOT_TLSLD16: |
5312 | case R_PPC64_GOT_TLSLD16_LO: | |
5313 | case R_PPC64_GOT_TLSLD16_HI: | |
5314 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5315 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5316 | goto dogot; |
5317 | ||
5318 | case R_PPC64_GOT_TLSGD16: | |
5319 | case R_PPC64_GOT_TLSGD16_LO: | |
5320 | case R_PPC64_GOT_TLSGD16_HI: | |
5321 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5322 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5323 | goto dogot; |
5324 | ||
5325 | case R_PPC64_GOT_TPREL16_DS: | |
5326 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5327 | case R_PPC64_GOT_TPREL16_HI: | |
5328 | case R_PPC64_GOT_TPREL16_HA: | |
5329 | tls_type = TLS_TLS | TLS_TPREL; | |
5330 | goto dogot; | |
5331 | ||
5332 | case R_PPC64_GOT_DTPREL16_DS: | |
5333 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5334 | case R_PPC64_GOT_DTPREL16_HI: | |
5335 | case R_PPC64_GOT_DTPREL16_HA: | |
5336 | tls_type = TLS_TLS | TLS_DTPREL; | |
5337 | goto dogot; | |
5338 | ||
a33d1f77 AM |
5339 | case R_PPC64_GOT16: |
5340 | case R_PPC64_GOT16_DS: | |
5341 | case R_PPC64_GOT16_HA: | |
5342 | case R_PPC64_GOT16_HI: | |
5343 | case R_PPC64_GOT16_LO: | |
5344 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5345 | dogot: |
5346 | { | |
5347 | struct got_entry *ent; | |
5348 | ||
58ac9f71 AM |
5349 | if (h != NULL) |
5350 | ent = h->got.glist; | |
411e1bfb AM |
5351 | else |
5352 | ent = local_got_ents[r_symndx]; | |
5353 | ||
5354 | for (; ent != NULL; ent = ent->next) | |
5355 | if (ent->addend == rel->r_addend | |
e717da7e | 5356 | && ent->owner == abfd |
411e1bfb AM |
5357 | && ent->tls_type == tls_type) |
5358 | break; | |
5359 | if (ent == NULL) | |
5360 | abort (); | |
5361 | if (ent->got.refcount > 0) | |
5362 | ent->got.refcount -= 1; | |
5363 | } | |
a33d1f77 | 5364 | break; |
65f38f15 | 5365 | |
a33d1f77 AM |
5366 | case R_PPC64_PLT16_HA: |
5367 | case R_PPC64_PLT16_HI: | |
5368 | case R_PPC64_PLT16_LO: | |
5369 | case R_PPC64_PLT32: | |
5370 | case R_PPC64_PLT64: | |
721956f4 AM |
5371 | case R_PPC64_REL14: |
5372 | case R_PPC64_REL14_BRNTAKEN: | |
5373 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5374 | case R_PPC64_REL24: |
58ac9f71 | 5375 | if (h != NULL) |
5d1634d7 | 5376 | { |
411e1bfb AM |
5377 | struct plt_entry *ent; |
5378 | ||
411e1bfb AM |
5379 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5380 | if (ent->addend == rel->r_addend) | |
5381 | break; | |
5382 | if (ent == NULL) | |
5383 | abort (); | |
5384 | if (ent->plt.refcount > 0) | |
5385 | ent->plt.refcount -= 1; | |
5d1634d7 | 5386 | } |
e86ce104 | 5387 | break; |
5d1634d7 | 5388 | |
a33d1f77 AM |
5389 | default: |
5390 | break; | |
5391 | } | |
5392 | } | |
b34976b6 | 5393 | return TRUE; |
5bd4f169 AM |
5394 | } |
5395 | ||
deb0e272 AM |
5396 | /* The maximum size of .sfpr. */ |
5397 | #define SFPR_MAX (218*4) | |
5398 | ||
5399 | struct sfpr_def_parms | |
5400 | { | |
699733f6 AM |
5401 | const char name[12]; |
5402 | unsigned char lo, hi; | |
deb0e272 AM |
5403 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5404 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5405 | }; | |
5406 | ||
5407 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5408 | ||
5409 | static unsigned int | |
5410 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5411 | { | |
5412 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5413 | unsigned int i; | |
5414 | size_t len = strlen (parm->name); | |
5415 | bfd_boolean writing = FALSE; | |
699733f6 | 5416 | char sym[16]; |
deb0e272 AM |
5417 | |
5418 | memcpy (sym, parm->name, len); | |
5419 | sym[len + 2] = 0; | |
5420 | ||
5421 | for (i = parm->lo; i <= parm->hi; i++) | |
5422 | { | |
5423 | struct elf_link_hash_entry *h; | |
5424 | ||
5425 | sym[len + 0] = i / 10 + '0'; | |
5426 | sym[len + 1] = i % 10 + '0'; | |
5427 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5428 | if (h != NULL | |
f5385ebf | 5429 | && !h->def_regular) |
deb0e272 AM |
5430 | { |
5431 | h->root.type = bfd_link_hash_defined; | |
5432 | h->root.u.def.section = htab->sfpr; | |
5433 | h->root.u.def.value = htab->sfpr->size; | |
5434 | h->type = STT_FUNC; | |
f5385ebf | 5435 | h->def_regular = 1; |
deb0e272 AM |
5436 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5437 | writing = TRUE; | |
5438 | if (htab->sfpr->contents == NULL) | |
5439 | { | |
5440 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5441 | if (htab->sfpr->contents == NULL) | |
5442 | return FALSE; | |
5443 | } | |
5444 | } | |
5445 | if (writing) | |
5446 | { | |
5447 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5448 | if (i != parm->hi) | |
5449 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5450 | else | |
5451 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5452 | htab->sfpr->size = p - htab->sfpr->contents; | |
5453 | } | |
5454 | } | |
5455 | ||
5456 | return TRUE; | |
5457 | } | |
5458 | ||
5459 | static bfd_byte * | |
5460 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5461 | { | |
5462 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5463 | return p + 4; | |
5464 | } | |
5465 | ||
5466 | static bfd_byte * | |
5467 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5468 | { | |
5469 | p = savegpr0 (abfd, p, r); | |
5470 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5471 | p = p + 4; | |
5472 | bfd_put_32 (abfd, BLR, p); | |
5473 | return p + 4; | |
5474 | } | |
5475 | ||
5476 | static bfd_byte * | |
5477 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5478 | { | |
5479 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5480 | return p + 4; | |
5481 | } | |
5482 | ||
5483 | static bfd_byte * | |
5484 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5485 | { | |
5486 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5487 | p = p + 4; | |
5488 | p = restgpr0 (abfd, p, r); | |
5489 | bfd_put_32 (abfd, MTLR_R0, p); | |
5490 | p = p + 4; | |
5491 | if (r == 29) | |
5492 | { | |
5493 | p = restgpr0 (abfd, p, 30); | |
5494 | p = restgpr0 (abfd, p, 31); | |
5495 | } | |
5496 | bfd_put_32 (abfd, BLR, p); | |
5497 | return p + 4; | |
5498 | } | |
5499 | ||
5500 | static bfd_byte * | |
5501 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5502 | { | |
5503 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5504 | return p + 4; | |
5505 | } | |
5506 | ||
5507 | static bfd_byte * | |
5508 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5509 | { | |
5510 | p = savegpr1 (abfd, p, r); | |
5511 | bfd_put_32 (abfd, BLR, p); | |
5512 | return p + 4; | |
5513 | } | |
5514 | ||
5515 | static bfd_byte * | |
5516 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5517 | { | |
5518 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5519 | return p + 4; | |
5520 | } | |
5521 | ||
5522 | static bfd_byte * | |
5523 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5524 | { | |
5525 | p = restgpr1 (abfd, p, r); | |
5526 | bfd_put_32 (abfd, BLR, p); | |
5527 | return p + 4; | |
5528 | } | |
5529 | ||
5530 | static bfd_byte * | |
5531 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5532 | { | |
5533 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5534 | return p + 4; | |
5535 | } | |
5536 | ||
5537 | static bfd_byte * | |
5538 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5539 | { | |
5540 | p = savefpr (abfd, p, r); | |
5541 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5542 | p = p + 4; | |
5543 | bfd_put_32 (abfd, BLR, p); | |
5544 | return p + 4; | |
5545 | } | |
5546 | ||
5547 | static bfd_byte * | |
5548 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5549 | { | |
5550 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5551 | return p + 4; | |
5552 | } | |
5553 | ||
5554 | static bfd_byte * | |
5555 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5556 | { | |
5557 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5558 | p = p + 4; | |
5559 | p = restfpr (abfd, p, r); | |
5560 | bfd_put_32 (abfd, MTLR_R0, p); | |
5561 | p = p + 4; | |
5562 | if (r == 29) | |
5563 | { | |
5564 | p = restfpr (abfd, p, 30); | |
5565 | p = restfpr (abfd, p, 31); | |
5566 | } | |
5567 | bfd_put_32 (abfd, BLR, p); | |
5568 | return p + 4; | |
5569 | } | |
5570 | ||
5571 | static bfd_byte * | |
5572 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5573 | { | |
5574 | p = savefpr (abfd, p, r); | |
5575 | bfd_put_32 (abfd, BLR, p); | |
5576 | return p + 4; | |
5577 | } | |
5578 | ||
5579 | static bfd_byte * | |
5580 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5581 | { | |
5582 | p = restfpr (abfd, p, r); | |
5583 | bfd_put_32 (abfd, BLR, p); | |
5584 | return p + 4; | |
5585 | } | |
5586 | ||
5587 | static bfd_byte * | |
5588 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5589 | { | |
5590 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5591 | p = p + 4; | |
5592 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5593 | return p + 4; | |
5594 | } | |
5595 | ||
5596 | static bfd_byte * | |
5597 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5598 | { | |
5599 | p = savevr (abfd, p, r); | |
5600 | bfd_put_32 (abfd, BLR, p); | |
5601 | return p + 4; | |
5602 | } | |
5603 | ||
5604 | static bfd_byte * | |
5605 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5606 | { | |
5607 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5608 | p = p + 4; | |
5609 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5610 | return p + 4; | |
5611 | } | |
5612 | ||
5613 | static bfd_byte * | |
5614 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5615 | { | |
5616 | p = restvr (abfd, p, r); | |
5617 | bfd_put_32 (abfd, BLR, p); | |
5618 | return p + 4; | |
5619 | } | |
5620 | ||
e86ce104 AM |
5621 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5622 | information on function code symbol entries to their corresponding | |
5623 | function descriptor symbol entries. */ | |
deb0e272 | 5624 | |
b34976b6 | 5625 | static bfd_boolean |
4ce794b7 | 5626 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5627 | { |
e86ce104 | 5628 | struct bfd_link_info *info; |
65f38f15 | 5629 | struct ppc_link_hash_table *htab; |
411e1bfb | 5630 | struct plt_entry *ent; |
50bc7936 AM |
5631 | struct ppc_link_hash_entry *fh; |
5632 | struct ppc_link_hash_entry *fdh; | |
5633 | bfd_boolean force_local; | |
5bd4f169 | 5634 | |
50bc7936 AM |
5635 | fh = (struct ppc_link_hash_entry *) h; |
5636 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5637 | return TRUE; |
e86ce104 | 5638 | |
50bc7936 AM |
5639 | if (fh->elf.root.type == bfd_link_hash_warning) |
5640 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5641 | |
4ce794b7 | 5642 | info = inf; |
65f38f15 | 5643 | htab = ppc_hash_table (info); |
5bd4f169 | 5644 | |
c09bdfe5 AM |
5645 | /* Resolve undefined references to dot-symbols as the value |
5646 | in the function descriptor, if we have one in a regular object. | |
5647 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5648 | in dynamic objects are handled elsewhere. */ | |
5649 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5650 | && fh->was_undefined | |
5651 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5652 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5653 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5654 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5655 | fh->oh->elf.root.u.def.value, | |
5656 | &fh->elf.root.u.def.section, | |
5657 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5658 | { | |
5659 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5660 | fh->elf.forced_local = 1; |
2b953679 AM |
5661 | fh->elf.def_regular = fh->oh->elf.def_regular; |
5662 | fh->elf.def_dynamic = fh->oh->elf.def_dynamic; | |
c09bdfe5 AM |
5663 | } |
5664 | ||
e86ce104 AM |
5665 | /* If this is a function code symbol, transfer dynamic linking |
5666 | information to the function descriptor symbol. */ | |
50bc7936 | 5667 | if (!fh->is_func) |
b34976b6 | 5668 | return TRUE; |
e86ce104 | 5669 | |
50bc7936 | 5670 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5671 | if (ent->plt.refcount > 0) |
5672 | break; | |
50bc7936 AM |
5673 | if (ent == NULL |
5674 | || fh->elf.root.root.string[0] != '.' | |
5675 | || fh->elf.root.root.string[1] == '\0') | |
5676 | return TRUE; | |
5bd4f169 | 5677 | |
50bc7936 AM |
5678 | /* Find the corresponding function descriptor symbol. Create it |
5679 | as undefined if necessary. */ | |
5bd4f169 | 5680 | |
50bc7936 AM |
5681 | fdh = get_fdh (fh, htab); |
5682 | if (fdh != NULL) | |
5683 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5684 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5685 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5686 | |
50bc7936 AM |
5687 | if (fdh == NULL |
5688 | && info->shared | |
5689 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5690 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5691 | { | |
908b32fc | 5692 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5693 | if (fdh == NULL) |
5694 | return FALSE; | |
50bc7936 | 5695 | } |
648cca2c | 5696 | |
908b32fc | 5697 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5698 | code symbol is strong undefined, make the fake sym the same. |
5699 | If the function code symbol is defined, then force the fake | |
5700 | descriptor local; We can't support overriding of symbols in a | |
5701 | shared library on a fake descriptor. */ | |
908b32fc AM |
5702 | |
5703 | if (fdh != NULL | |
5704 | && fdh->fake | |
433817dd | 5705 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5706 | { |
433817dd AM |
5707 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5708 | { | |
5709 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5710 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5711 | } | |
5712 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5713 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5714 | { | |
5715 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5716 | } | |
908b32fc AM |
5717 | } |
5718 | ||
50bc7936 | 5719 | if (fdh != NULL |
f5385ebf | 5720 | && !fdh->elf.forced_local |
50bc7936 | 5721 | && (info->shared |
f5385ebf AM |
5722 | || fdh->elf.def_dynamic |
5723 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5724 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5725 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5726 | { | |
5727 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5728 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5729 | return FALSE; |
f5385ebf AM |
5730 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5731 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5732 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5733 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5734 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5735 | { |
40d16e0b | 5736 | move_plt_plist (fh, fdh); |
f5385ebf | 5737 | fdh->elf.needs_plt = 1; |
e86ce104 | 5738 | } |
50bc7936 | 5739 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5740 | fdh->oh = fh; |
5741 | fh->oh = fdh; | |
e86ce104 AM |
5742 | } |
5743 | ||
50bc7936 AM |
5744 | /* Now that the info is on the function descriptor, clear the |
5745 | function code sym info. Any function code syms for which we | |
5746 | don't have a definition in a regular file, we force local. | |
5747 | This prevents a shared library from exporting syms that have | |
5748 | been imported from another library. Function code syms that | |
5749 | are really in the library we must leave global to prevent the | |
5750 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5751 | force_local = (!fh->elf.def_regular |
5752 | || fdh == NULL | |
5753 | || !fdh->elf.def_regular | |
5754 | || fdh->elf.forced_local); | |
50bc7936 AM |
5755 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5756 | ||
b34976b6 | 5757 | return TRUE; |
e86ce104 | 5758 | } |
40b8271b | 5759 | |
e86ce104 | 5760 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5761 | this hook to a) provide some gcc support functions, and b) transfer |
5762 | dynamic linking information gathered so far on function code symbol | |
5763 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5764 | |
b34976b6 | 5765 | static bfd_boolean |
4ce794b7 AM |
5766 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5767 | struct bfd_link_info *info) | |
e86ce104 AM |
5768 | { |
5769 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5770 | unsigned int i; |
deb0e272 AM |
5771 | const struct sfpr_def_parms funcs[] = |
5772 | { | |
5773 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5774 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5775 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5776 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5777 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5778 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5779 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5780 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5781 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5782 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5783 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5784 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5785 | }; | |
e86ce104 AM |
5786 | |
5787 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5788 | if (htab->sfpr == NULL) |
5789 | /* We don't have any relocs. */ | |
b34976b6 | 5790 | return TRUE; |
82bd7b59 | 5791 | |
deb0e272 AM |
5792 | /* Provide any missing _save* and _rest* functions. */ |
5793 | htab->sfpr->size = 0; | |
5794 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5795 | if (!sfpr_define (info, &funcs[i])) | |
5796 | return FALSE; | |
82bd7b59 | 5797 | |
4ce794b7 | 5798 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5799 | |
eea6121a | 5800 | if (htab->sfpr->size == 0) |
8423293d | 5801 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5802 | |
b34976b6 | 5803 | return TRUE; |
e86ce104 AM |
5804 | } |
5805 | ||
5806 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5807 | regular object. The current definition is in some section of the | |
5808 | dynamic object, but we're not including those sections. We have to | |
5809 | change the definition to something the rest of the link can | |
5810 | understand. */ | |
5811 | ||
b34976b6 | 5812 | static bfd_boolean |
4ce794b7 AM |
5813 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5814 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5815 | { |
5816 | struct ppc_link_hash_table *htab; | |
e86ce104 | 5817 | asection *s; |
e86ce104 AM |
5818 | |
5819 | htab = ppc_hash_table (info); | |
5820 | ||
5821 | /* Deal with function syms. */ | |
5822 | if (h->type == STT_FUNC | |
f5385ebf | 5823 | || h->needs_plt) |
e86ce104 AM |
5824 | { |
5825 | /* Clear procedure linkage table information for any symbol that | |
5826 | won't need a .plt entry. */ | |
411e1bfb AM |
5827 | struct plt_entry *ent; |
5828 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5829 | if (ent->plt.refcount > 0) | |
5830 | break; | |
8387904d | 5831 | if (ent == NULL |
9c7a29a3 AM |
5832 | || SYMBOL_CALLS_LOCAL (info, h) |
5833 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5834 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5835 | { |
411e1bfb | 5836 | h->plt.plist = NULL; |
f5385ebf | 5837 | h->needs_plt = 0; |
40b8271b | 5838 | } |
5bd4f169 | 5839 | } |
bbd7ec4a | 5840 | else |
411e1bfb | 5841 | h->plt.plist = NULL; |
5bd4f169 AM |
5842 | |
5843 | /* If this is a weak symbol, and there is a real definition, the | |
5844 | processor independent code will have arranged for us to see the | |
5845 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5846 | if (h->u.weakdef != NULL) |
5bd4f169 | 5847 | { |
f6e332e6 AM |
5848 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5849 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5850 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5851 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5852 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5853 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5854 | return TRUE; |
5bd4f169 AM |
5855 | } |
5856 | ||
5bd4f169 AM |
5857 | /* If we are creating a shared library, we must presume that the |
5858 | only references to the symbol are via the global offset table. | |
5859 | For such cases we need not do anything here; the relocations will | |
5860 | be handled correctly by relocate_section. */ | |
5861 | if (info->shared) | |
b34976b6 | 5862 | return TRUE; |
5bd4f169 | 5863 | |
65f38f15 AM |
5864 | /* If there are no references to this symbol that do not use the |
5865 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5866 | if (!h->non_got_ref) |
b34976b6 | 5867 | return TRUE; |
65f38f15 | 5868 | |
b186458a JJ |
5869 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
5870 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
5871 | return TRUE; | |
5872 | ||
f4656909 | 5873 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5874 | { |
f4656909 AM |
5875 | struct ppc_link_hash_entry * eh; |
5876 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5877 | |
f4656909 AM |
5878 | eh = (struct ppc_link_hash_entry *) h; |
5879 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5880 | { | |
5881 | s = p->sec->output_section; | |
5882 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5883 | break; | |
5884 | } | |
5885 | ||
5886 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5887 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5888 | if (p == NULL) | |
5889 | { | |
f5385ebf | 5890 | h->non_got_ref = 0; |
f4656909 AM |
5891 | return TRUE; |
5892 | } | |
65f38f15 AM |
5893 | } |
5894 | ||
5d35169e | 5895 | if (h->plt.plist != NULL) |
97b639ba AM |
5896 | { |
5897 | /* We should never get here, but unfortunately there are versions | |
5898 | of gcc out there that improperly (for this ABI) put initialized | |
5899 | function pointers, vtable refs and suchlike in read-only | |
5900 | sections. Allow them to proceed, but warn that this might | |
5901 | break at runtime. */ | |
5902 | (*_bfd_error_handler) | |
5903 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5904 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5905 | h->root.root.string); | |
5906 | } | |
5d35169e AM |
5907 | |
5908 | /* This is a reference to a symbol defined by a dynamic object which | |
5909 | is not a function. */ | |
5910 | ||
909272ee AM |
5911 | if (h->size == 0) |
5912 | { | |
5913 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5914 | h->root.root.string); | |
5915 | return TRUE; | |
5916 | } | |
5917 | ||
5bd4f169 AM |
5918 | /* We must allocate the symbol in our .dynbss section, which will |
5919 | become part of the .bss section of the executable. There will be | |
5920 | an entry for this symbol in the .dynsym section. The dynamic | |
5921 | object will contain position independent code, so all references | |
5922 | from the dynamic object to this symbol will go through the global | |
5923 | offset table. The dynamic linker will use the .dynsym entry to | |
5924 | determine the address it must put in the global offset table, so | |
5925 | both the dynamic object and the regular object will refer to the | |
5926 | same memory location for the variable. */ | |
5bd4f169 | 5927 | |
04c9666a AM |
5928 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5929 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5930 | runtime process image. We need to remember the offset into the |
5931 | .rela.bss section we are going to use. */ | |
5932 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5933 | { | |
eea6121a | 5934 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5935 | h->needs_copy = 1; |
5bd4f169 AM |
5936 | } |
5937 | ||
4ce794b7 | 5938 | s = htab->dynbss; |
5bd4f169 | 5939 | |
027297b7 | 5940 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
5941 | } |
5942 | ||
e86ce104 AM |
5943 | /* If given a function descriptor symbol, hide both the function code |
5944 | sym and the descriptor. */ | |
5945 | static void | |
4ce794b7 AM |
5946 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5947 | struct elf_link_hash_entry *h, | |
5948 | bfd_boolean force_local) | |
e86ce104 | 5949 | { |
34814b9f | 5950 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5951 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5952 | ||
34814b9f AM |
5953 | eh = (struct ppc_link_hash_entry *) h; |
5954 | if (eh->is_func_descriptor) | |
e86ce104 | 5955 | { |
34814b9f | 5956 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5957 | |
721956f4 | 5958 | if (fh == NULL) |
d1329ca3 AM |
5959 | { |
5960 | const char *p, *q; | |
5961 | struct ppc_link_hash_table *htab; | |
5962 | char save; | |
5963 | ||
5964 | /* We aren't supposed to use alloca in BFD because on | |
5965 | systems which do not have alloca the version in libiberty | |
5966 | calls xmalloc, which might cause the program to crash | |
5967 | when it runs out of memory. This function doesn't have a | |
5968 | return status, so there's no way to gracefully return an | |
5969 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5970 | accessed; It's either a string in an ELF string table, |
5971 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5972 | |
34814b9f | 5973 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5974 | save = *p; |
5975 | *(char *) p = '.'; | |
5976 | htab = ppc_hash_table (info); | |
34814b9f AM |
5977 | fh = (struct ppc_link_hash_entry *) |
5978 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5979 | *(char *) p = save; |
5980 | ||
5981 | /* Unfortunately, if it so happens that the string we were | |
5982 | looking for was allocated immediately before this string, | |
5983 | then we overwrote the string terminator. That's the only | |
5984 | reason the lookup should fail. */ | |
5985 | if (fh == NULL) | |
5986 | { | |
34814b9f AM |
5987 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5988 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5989 | --q, --p; |
34814b9f AM |
5990 | if (q < eh->elf.root.root.string && *p == '.') |
5991 | fh = (struct ppc_link_hash_entry *) | |
5992 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5993 | } |
5994 | if (fh != NULL) | |
5995 | { | |
34814b9f AM |
5996 | eh->oh = fh; |
5997 | fh->oh = eh; | |
d1329ca3 AM |
5998 | } |
5999 | } | |
e86ce104 | 6000 | if (fh != NULL) |
34814b9f | 6001 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6002 | } |
6003 | } | |
6004 | ||
411e1bfb | 6005 | static bfd_boolean |
8843416a AM |
6006 | get_sym_h (struct elf_link_hash_entry **hp, |
6007 | Elf_Internal_Sym **symp, | |
6008 | asection **symsecp, | |
6009 | char **tls_maskp, | |
6010 | Elf_Internal_Sym **locsymsp, | |
6011 | unsigned long r_symndx, | |
6012 | bfd *ibfd) | |
411e1bfb AM |
6013 | { |
6014 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6015 | ||
6016 | if (r_symndx >= symtab_hdr->sh_info) | |
6017 | { | |
6018 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6019 | struct elf_link_hash_entry *h; | |
6020 | ||
6021 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6022 | while (h->root.type == bfd_link_hash_indirect | |
6023 | || h->root.type == bfd_link_hash_warning) | |
6024 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6025 | ||
6026 | if (hp != NULL) | |
6027 | *hp = h; | |
6028 | ||
6029 | if (symp != NULL) | |
6030 | *symp = NULL; | |
6031 | ||
6032 | if (symsecp != NULL) | |
6033 | { | |
6034 | asection *symsec = NULL; | |
6035 | if (h->root.type == bfd_link_hash_defined | |
6036 | || h->root.type == bfd_link_hash_defweak) | |
6037 | symsec = h->root.u.def.section; | |
6038 | *symsecp = symsec; | |
6039 | } | |
6040 | ||
e7b938ca | 6041 | if (tls_maskp != NULL) |
411e1bfb AM |
6042 | { |
6043 | struct ppc_link_hash_entry *eh; | |
6044 | ||
6045 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6046 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6047 | } |
6048 | } | |
6049 | else | |
6050 | { | |
6051 | Elf_Internal_Sym *sym; | |
6052 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6053 | ||
6054 | if (locsyms == NULL) | |
6055 | { | |
6056 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6057 | if (locsyms == NULL) | |
6058 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6059 | symtab_hdr->sh_info, | |
6060 | 0, NULL, NULL, NULL); | |
6061 | if (locsyms == NULL) | |
6062 | return FALSE; | |
6063 | *locsymsp = locsyms; | |
6064 | } | |
6065 | sym = locsyms + r_symndx; | |
6066 | ||
6067 | if (hp != NULL) | |
6068 | *hp = NULL; | |
6069 | ||
6070 | if (symp != NULL) | |
6071 | *symp = sym; | |
6072 | ||
6073 | if (symsecp != NULL) | |
6074 | { | |
6075 | asection *symsec = NULL; | |
6076 | if ((sym->st_shndx != SHN_UNDEF | |
6077 | && sym->st_shndx < SHN_LORESERVE) | |
6078 | || sym->st_shndx > SHN_HIRESERVE) | |
6079 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
6080 | *symsecp = symsec; | |
6081 | } | |
6082 | ||
e7b938ca | 6083 | if (tls_maskp != NULL) |
411e1bfb AM |
6084 | { |
6085 | struct got_entry **lgot_ents; | |
e7b938ca | 6086 | char *tls_mask; |
411e1bfb | 6087 | |
e7b938ca | 6088 | tls_mask = NULL; |
411e1bfb AM |
6089 | lgot_ents = elf_local_got_ents (ibfd); |
6090 | if (lgot_ents != NULL) | |
6091 | { | |
e7b938ca AM |
6092 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6093 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6094 | } |
e7b938ca | 6095 | *tls_maskp = tls_mask; |
411e1bfb AM |
6096 | } |
6097 | } | |
6098 | return TRUE; | |
6099 | } | |
6100 | ||
e7b938ca | 6101 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6102 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6103 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6104 | |
6105 | static int | |
0d4792f7 AM |
6106 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6107 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6108 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6109 | { |
6110 | unsigned long r_symndx; | |
0d4792f7 | 6111 | int next_r; |
411e1bfb AM |
6112 | struct elf_link_hash_entry *h; |
6113 | Elf_Internal_Sym *sym; | |
6114 | asection *sec; | |
6115 | bfd_vma off; | |
6116 | ||
6117 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6118 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6119 | return 0; |
411e1bfb | 6120 | |
e7b938ca | 6121 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6122 | || sec == NULL |
7c8fe5c4 | 6123 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6124 | return 1; |
411e1bfb AM |
6125 | |
6126 | /* Look inside a TOC section too. */ | |
6127 | if (h != NULL) | |
6128 | { | |
6129 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6130 | off = h->root.u.def.value; | |
6131 | } | |
6132 | else | |
6133 | off = sym->st_value; | |
6134 | off += rel->r_addend; | |
6135 | BFD_ASSERT (off % 8 == 0); | |
7c8fe5c4 AM |
6136 | r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8]; |
6137 | next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1]; | |
e7b938ca | 6138 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6139 | return 0; |
0d4792f7 AM |
6140 | if (toc_symndx != NULL) |
6141 | *toc_symndx = r_symndx; | |
6142 | if ((h == NULL | |
6143 | || ((h->root.type == bfd_link_hash_defined | |
6144 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6145 | && !h->def_dynamic)) |
0d4792f7 AM |
6146 | && (next_r == -1 || next_r == -2)) |
6147 | return 1 - next_r; | |
951fd09b | 6148 | return 1; |
411e1bfb AM |
6149 | } |
6150 | ||
754021d0 | 6151 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6152 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6153 | |
6154 | static bfd_boolean | |
6155 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6156 | { | |
6157 | struct ppc_link_hash_entry *eh; | |
6158 | asection *sym_sec; | |
6159 | long *opd_adjust; | |
6160 | ||
6161 | if (h->root.type == bfd_link_hash_indirect) | |
6162 | return TRUE; | |
6163 | ||
6164 | if (h->root.type == bfd_link_hash_warning) | |
6165 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6166 | ||
6167 | if (h->root.type != bfd_link_hash_defined | |
6168 | && h->root.type != bfd_link_hash_defweak) | |
6169 | return TRUE; | |
6170 | ||
6171 | eh = (struct ppc_link_hash_entry *) h; | |
6172 | if (eh->adjust_done) | |
6173 | return TRUE; | |
6174 | ||
6175 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6176 | opd_adjust = get_opd_info (sym_sec); |
6177 | if (opd_adjust != NULL) | |
754021d0 | 6178 | { |
3f764659 | 6179 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6180 | if (adjust == -1) |
6181 | { | |
6182 | /* This entry has been deleted. */ | |
b3fac117 | 6183 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6184 | if (dsec == NULL) |
6185 | { | |
6186 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6187 | if (elf_discarded_section (dsec)) | |
6188 | { | |
b3fac117 | 6189 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6190 | break; |
6191 | } | |
6192 | } | |
4025353c | 6193 | eh->elf.root.u.def.value = 0; |
81688140 | 6194 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6195 | } |
6196 | else | |
6197 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6198 | eh->adjust_done = 1; |
6199 | } | |
6200 | return TRUE; | |
6201 | } | |
6202 | ||
8c1d1bb8 AM |
6203 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6204 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6205 | have already been determined. */ | |
6206 | ||
6207 | static bfd_boolean | |
6208 | dec_dynrel_count (bfd_vma r_info, | |
6209 | asection *sec, | |
6210 | struct bfd_link_info *info, | |
6211 | Elf_Internal_Sym **local_syms, | |
6212 | struct elf_link_hash_entry *h, | |
6213 | asection *sym_sec) | |
6214 | { | |
6215 | enum elf_ppc64_reloc_type r_type; | |
6216 | struct ppc_dyn_relocs *p; | |
6217 | struct ppc_dyn_relocs **pp; | |
6218 | ||
6219 | /* Can this reloc be dynamic? This switch, and later tests here | |
6220 | should be kept in sync with the code in check_relocs. */ | |
6221 | r_type = ELF64_R_TYPE (r_info); | |
6222 | switch (r_type) | |
6223 | { | |
6224 | default: | |
6225 | return TRUE; | |
6226 | ||
6227 | case R_PPC64_TPREL16: | |
6228 | case R_PPC64_TPREL16_LO: | |
6229 | case R_PPC64_TPREL16_HI: | |
6230 | case R_PPC64_TPREL16_HA: | |
6231 | case R_PPC64_TPREL16_DS: | |
6232 | case R_PPC64_TPREL16_LO_DS: | |
6233 | case R_PPC64_TPREL16_HIGHER: | |
6234 | case R_PPC64_TPREL16_HIGHERA: | |
6235 | case R_PPC64_TPREL16_HIGHEST: | |
6236 | case R_PPC64_TPREL16_HIGHESTA: | |
6237 | if (!info->shared) | |
6238 | return TRUE; | |
6239 | ||
6240 | case R_PPC64_TPREL64: | |
6241 | case R_PPC64_DTPMOD64: | |
6242 | case R_PPC64_DTPREL64: | |
6243 | case R_PPC64_ADDR64: | |
6244 | case R_PPC64_REL30: | |
6245 | case R_PPC64_REL32: | |
6246 | case R_PPC64_REL64: | |
6247 | case R_PPC64_ADDR14: | |
6248 | case R_PPC64_ADDR14_BRNTAKEN: | |
6249 | case R_PPC64_ADDR14_BRTAKEN: | |
6250 | case R_PPC64_ADDR16: | |
6251 | case R_PPC64_ADDR16_DS: | |
6252 | case R_PPC64_ADDR16_HA: | |
6253 | case R_PPC64_ADDR16_HI: | |
6254 | case R_PPC64_ADDR16_HIGHER: | |
6255 | case R_PPC64_ADDR16_HIGHERA: | |
6256 | case R_PPC64_ADDR16_HIGHEST: | |
6257 | case R_PPC64_ADDR16_HIGHESTA: | |
6258 | case R_PPC64_ADDR16_LO: | |
6259 | case R_PPC64_ADDR16_LO_DS: | |
6260 | case R_PPC64_ADDR24: | |
6261 | case R_PPC64_ADDR32: | |
6262 | case R_PPC64_UADDR16: | |
6263 | case R_PPC64_UADDR32: | |
6264 | case R_PPC64_UADDR64: | |
6265 | case R_PPC64_TOC: | |
6266 | break; | |
6267 | } | |
6268 | ||
6269 | if (local_syms != NULL) | |
6270 | { | |
6271 | unsigned long r_symndx; | |
6272 | Elf_Internal_Sym *sym; | |
6273 | bfd *ibfd = sec->owner; | |
6274 | ||
6275 | r_symndx = ELF64_R_SYM (r_info); | |
6276 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6277 | return FALSE; | |
6278 | } | |
6279 | ||
6280 | if ((info->shared | |
6281 | && (MUST_BE_DYN_RELOC (r_type) | |
6282 | || (h != NULL | |
6283 | && (!info->symbolic | |
6284 | || h->root.type == bfd_link_hash_defweak | |
6285 | || !h->def_regular)))) | |
6286 | || (ELIMINATE_COPY_RELOCS | |
6287 | && !info->shared | |
6288 | && h != NULL | |
6289 | && (h->root.type == bfd_link_hash_defweak | |
6290 | || !h->def_regular))) | |
6291 | ; | |
6292 | else | |
6293 | return TRUE; | |
6294 | ||
6295 | if (h != NULL) | |
6296 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6297 | else |
6edfbbad | 6298 | { |
60124e18 AM |
6299 | if (sym_sec != NULL) |
6300 | { | |
6301 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6302 | pp = (struct ppc_dyn_relocs **) vpp; | |
6303 | } | |
6304 | else | |
6305 | { | |
6306 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6307 | pp = (struct ppc_dyn_relocs **) vpp; | |
6308 | } | |
6309 | ||
6310 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6311 | with local syms for a given section. Don't report a dynreloc | |
6312 | miscount. */ | |
6313 | if (*pp == NULL) | |
6314 | return TRUE; | |
6edfbbad | 6315 | } |
8c1d1bb8 AM |
6316 | |
6317 | while ((p = *pp) != NULL) | |
6318 | { | |
6319 | if (p->sec == sec) | |
6320 | { | |
6321 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6322 | p->pc_count -= 1; | |
6323 | p->count -= 1; | |
6324 | if (p->count == 0) | |
6325 | *pp = p->next; | |
6326 | return TRUE; | |
6327 | } | |
6328 | pp = &p->next; | |
6329 | } | |
6330 | ||
6331 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6332 | sec->owner, sec); | |
6333 | bfd_set_error (bfd_error_bad_value); | |
6334 | return FALSE; | |
6335 | } | |
6336 | ||
754021d0 AM |
6337 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6338 | only remove those associated with functions in discarded link-once | |
6339 | sections, or weakly defined functions that have been overridden. It | |
6340 | would be possible to remove many more entries for statically linked | |
6341 | applications. */ | |
6342 | ||
b34976b6 | 6343 | bfd_boolean |
3f764659 | 6344 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
b4f4e59f | 6345 | bfd_boolean no_opd_opt, |
3f764659 | 6346 | bfd_boolean non_overlapping) |
1e2f5b6e AM |
6347 | { |
6348 | bfd *ibfd; | |
754021d0 | 6349 | bfd_boolean some_edited = FALSE; |
3f764659 | 6350 | asection *need_pad = NULL; |
1e2f5b6e | 6351 | |
411e1bfb | 6352 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6353 | { |
6354 | asection *sec; | |
6355 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6356 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6357 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6358 | struct elf_link_hash_entry **sym_hashes; |
6359 | bfd_vma offset; | |
d6fe2dc1 | 6360 | bfd_size_type amt; |
4025353c | 6361 | long *opd_adjust; |
3f764659 JJ |
6362 | bfd_boolean need_edit, add_aux_fields; |
6363 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6364 | |
6365 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6366 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6367 | continue; |
6368 | ||
3f764659 | 6369 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6370 | opd_adjust = get_opd_info (sec); |
6371 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6372 | { |
4b85d634 AM |
6373 | /* check_relocs hasn't been called. Must be a ld -r link |
6374 | or --just-symbols object. */ | |
b4f4e59f | 6375 | opd_adjust = bfd_alloc (obfd, amt); |
46de2a7c AM |
6376 | if (opd_adjust == NULL) |
6377 | return FALSE; | |
7c8fe5c4 AM |
6378 | ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust; |
6379 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
6380 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
d6fe2dc1 | 6381 | } |
4025353c | 6382 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6383 | |
b4f4e59f AM |
6384 | if (no_opd_opt) |
6385 | continue; | |
6386 | ||
4b85d634 AM |
6387 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6388 | continue; | |
6389 | ||
1e2f5b6e AM |
6390 | if (sec->output_section == bfd_abs_section_ptr) |
6391 | continue; | |
6392 | ||
6393 | /* Look through the section relocs. */ | |
6394 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6395 | continue; | |
6396 | ||
6cdc0ccc | 6397 | local_syms = NULL; |
1e2f5b6e AM |
6398 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6399 | sym_hashes = elf_sym_hashes (ibfd); | |
6400 | ||
6401 | /* Read the relocations. */ | |
4ce794b7 | 6402 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6403 | info->keep_memory); |
1e2f5b6e | 6404 | if (relstart == NULL) |
b34976b6 | 6405 | return FALSE; |
1e2f5b6e AM |
6406 | |
6407 | /* First run through the relocs to check they are sane, and to | |
6408 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6409 | need_edit = FALSE; |
3f764659 | 6410 | need_pad = sec; |
1e2f5b6e AM |
6411 | offset = 0; |
6412 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6413 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6414 | { |
04c9666a | 6415 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6416 | unsigned long r_symndx; |
6417 | asection *sym_sec; | |
6418 | struct elf_link_hash_entry *h; | |
6419 | Elf_Internal_Sym *sym; | |
6420 | ||
3f764659 | 6421 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6422 | only interested in the reloc pointing to a function entry |
6423 | point. */ | |
50bc7936 AM |
6424 | if (rel->r_offset != offset |
6425 | || rel + 1 >= relend | |
6426 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6427 | { |
6428 | /* If someone messes with .opd alignment then after a | |
6429 | "ld -r" we might have padding in the middle of .opd. | |
6430 | Also, there's nothing to prevent someone putting | |
6431 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6432 | optimization for them! */ |
3f764659 | 6433 | broken_opd: |
1e2f5b6e | 6434 | (*_bfd_error_handler) |
d003868e | 6435 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6436 | need_edit = FALSE; |
1e2f5b6e AM |
6437 | break; |
6438 | } | |
6439 | ||
50bc7936 AM |
6440 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6441 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6442 | { | |
6443 | (*_bfd_error_handler) | |
d003868e AM |
6444 | (_("%B: unexpected reloc type %u in .opd section"), |
6445 | ibfd, r_type); | |
50bc7936 AM |
6446 | need_edit = FALSE; |
6447 | break; | |
6448 | } | |
6449 | ||
1e2f5b6e | 6450 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6451 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6452 | r_symndx, ibfd)) | |
50bc7936 | 6453 | goto error_ret; |
1e2f5b6e AM |
6454 | |
6455 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6456 | { | |
411e1bfb AM |
6457 | const char *sym_name; |
6458 | if (h != NULL) | |
6459 | sym_name = h->root.root.string; | |
6460 | else | |
26c61ae5 L |
6461 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6462 | sym_sec); | |
411e1bfb | 6463 | |
1e2f5b6e | 6464 | (*_bfd_error_handler) |
d003868e AM |
6465 | (_("%B: undefined sym `%s' in .opd section"), |
6466 | ibfd, sym_name); | |
b34976b6 | 6467 | need_edit = FALSE; |
1e2f5b6e AM |
6468 | break; |
6469 | } | |
6470 | ||
51020317 AM |
6471 | /* opd entries are always for functions defined in the |
6472 | current input bfd. If the symbol isn't defined in the | |
6473 | input bfd, then we won't be using the function in this | |
6474 | bfd; It must be defined in a linkonce section in another | |
6475 | bfd, or is weak. It's also possible that we are | |
6476 | discarding the function due to a linker script /DISCARD/, | |
6477 | which we test for via the output_section. */ | |
6478 | if (sym_sec->owner != ibfd | |
6479 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6480 | need_edit = TRUE; |
1e2f5b6e | 6481 | |
50bc7936 | 6482 | rel += 2; |
3f764659 JJ |
6483 | if (rel == relend |
6484 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6485 | { | |
6486 | if (sec->size == offset + 24) | |
6487 | { | |
6488 | need_pad = NULL; | |
6489 | break; | |
6490 | } | |
6491 | if (rel == relend && sec->size == offset + 16) | |
6492 | { | |
6493 | cnt_16b++; | |
6494 | break; | |
6495 | } | |
6496 | goto broken_opd; | |
6497 | } | |
6498 | ||
6499 | if (rel->r_offset == offset + 24) | |
6500 | offset += 24; | |
6501 | else if (rel->r_offset != offset + 16) | |
6502 | goto broken_opd; | |
6503 | else if (rel + 1 < relend | |
6504 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6505 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6506 | { | |
6507 | offset += 16; | |
6508 | cnt_16b++; | |
6509 | } | |
6510 | else if (rel + 2 < relend | |
6511 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6512 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6513 | { | |
6514 | offset += 24; | |
6515 | rel += 1; | |
6516 | } | |
6517 | else | |
6518 | goto broken_opd; | |
1e2f5b6e AM |
6519 | } |
6520 | ||
3f764659 JJ |
6521 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6522 | ||
6523 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6524 | { |
6525 | Elf_Internal_Rela *write_rel; | |
6526 | bfd_byte *rptr, *wptr; | |
3f764659 | 6527 | bfd_byte *new_contents = NULL; |
b34976b6 | 6528 | bfd_boolean skip; |
3f764659 | 6529 | long opd_ent_size; |
1e2f5b6e AM |
6530 | |
6531 | /* This seems a waste of time as input .opd sections are all | |
6532 | zeros as generated by gcc, but I suppose there's no reason | |
6533 | this will always be so. We might start putting something in | |
6534 | the third word of .opd entries. */ | |
6535 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6536 | { | |
eea6121a AM |
6537 | bfd_byte *loc; |
6538 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6539 | { |
eea6121a AM |
6540 | if (loc != NULL) |
6541 | free (loc); | |
50bc7936 | 6542 | error_ret: |
6cdc0ccc AM |
6543 | if (local_syms != NULL |
6544 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6545 | free (local_syms); | |
6cdc0ccc AM |
6546 | if (elf_section_data (sec)->relocs != relstart) |
6547 | free (relstart); | |
b34976b6 | 6548 | return FALSE; |
6cdc0ccc | 6549 | } |
1e2f5b6e AM |
6550 | sec->contents = loc; |
6551 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6552 | } | |
6553 | ||
6554 | elf_section_data (sec)->relocs = relstart; | |
6555 | ||
3f764659 | 6556 | new_contents = sec->contents; |
3f764659 JJ |
6557 | if (add_aux_fields) |
6558 | { | |
6559 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6560 | if (new_contents == NULL) | |
6561 | return FALSE; | |
6562 | need_pad = FALSE; | |
3f764659 | 6563 | } |
b4f4e59f AM |
6564 | wptr = new_contents; |
6565 | rptr = sec->contents; | |
3f764659 | 6566 | |
1e2f5b6e | 6567 | write_rel = relstart; |
b34976b6 | 6568 | skip = FALSE; |
1e2f5b6e | 6569 | offset = 0; |
3f764659 | 6570 | opd_ent_size = 0; |
1e2f5b6e AM |
6571 | for (rel = relstart; rel < relend; rel++) |
6572 | { | |
50bc7936 AM |
6573 | unsigned long r_symndx; |
6574 | asection *sym_sec; | |
6575 | struct elf_link_hash_entry *h; | |
6576 | Elf_Internal_Sym *sym; | |
6577 | ||
6578 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6579 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6580 | r_symndx, ibfd)) |
50bc7936 AM |
6581 | goto error_ret; |
6582 | ||
1e2f5b6e AM |
6583 | if (rel->r_offset == offset) |
6584 | { | |
50bc7936 | 6585 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6586 | |
6587 | /* See if the .opd entry is full 24 byte or | |
6588 | 16 byte (with fd_aux entry overlapped with next | |
6589 | fd_func). */ | |
6590 | opd_ent_size = 24; | |
6591 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6592 | || (rel + 3 < relend | |
6593 | && rel[2].r_offset == offset + 16 | |
6594 | && rel[3].r_offset == offset + 24 | |
6595 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6596 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6597 | opd_ent_size = 16; | |
6598 | ||
4025353c AM |
6599 | if (h != NULL |
6600 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6601 | { |
6602 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6603 | ppc_hash_table (info)); | |
6604 | if (fdh != NULL | |
6605 | && fdh->elf.root.type != bfd_link_hash_defined | |
6606 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6607 | fdh = NULL; | |
6608 | } | |
1e2f5b6e | 6609 | |
51020317 AM |
6610 | skip = (sym_sec->owner != ibfd |
6611 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6612 | if (skip) |
6613 | { | |
4025353c | 6614 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6615 | { |
6616 | /* Arrange for the function descriptor sym | |
6617 | to be dropped. */ | |
d6fe2dc1 AM |
6618 | fdh->elf.root.u.def.value = 0; |
6619 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6620 | } |
3f764659 | 6621 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6622 | } |
6623 | else | |
1e2f5b6e AM |
6624 | { |
6625 | /* We'll be keeping this opd entry. */ | |
6626 | ||
4025353c | 6627 | if (fdh != NULL) |
1e2f5b6e | 6628 | { |
754021d0 AM |
6629 | /* Redefine the function descriptor symbol to |
6630 | this location in the opd section. It is | |
6631 | necessary to update the value here rather | |
6632 | than using an array of adjustments as we do | |
6633 | for local symbols, because various places | |
6634 | in the generic ELF code use the value | |
6635 | stored in u.def.value. */ | |
3f764659 | 6636 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6637 | fdh->adjust_done = 1; |
1e2f5b6e | 6638 | } |
754021d0 AM |
6639 | |
6640 | /* Local syms are a bit tricky. We could | |
6641 | tweak them as they can be cached, but | |
6642 | we'd need to look through the local syms | |
6643 | for the function descriptor sym which we | |
6644 | don't have at the moment. So keep an | |
6645 | array of adjustments. */ | |
3f764659 JJ |
6646 | opd_adjust[rel->r_offset / 8] |
6647 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6648 | |
6649 | if (wptr != rptr) | |
3f764659 JJ |
6650 | memcpy (wptr, rptr, opd_ent_size); |
6651 | wptr += opd_ent_size; | |
6652 | if (add_aux_fields && opd_ent_size == 16) | |
6653 | { | |
6654 | memset (wptr, '\0', 8); | |
6655 | wptr += 8; | |
6656 | } | |
1e2f5b6e | 6657 | } |
3f764659 JJ |
6658 | rptr += opd_ent_size; |
6659 | offset += opd_ent_size; | |
1e2f5b6e AM |
6660 | } |
6661 | ||
50bc7936 AM |
6662 | if (skip) |
6663 | { | |
60124e18 AM |
6664 | if (!NO_OPD_RELOCS |
6665 | && !info->relocatable | |
18d944df AM |
6666 | && !dec_dynrel_count (rel->r_info, sec, info, |
6667 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6668 | goto error_ret; |
50bc7936 AM |
6669 | } |
6670 | else | |
1e2f5b6e | 6671 | { |
50bc7936 AM |
6672 | /* We need to adjust any reloc offsets to point to the |
6673 | new opd entries. While we're at it, we may as well | |
6674 | remove redundant relocs. */ | |
3f764659 | 6675 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6676 | if (write_rel != rel) |
6677 | memcpy (write_rel, rel, sizeof (*rel)); | |
6678 | ++write_rel; | |
6679 | } | |
6680 | } | |
6681 | ||
3f764659 | 6682 | sec->size = wptr - new_contents; |
1e2f5b6e | 6683 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6684 | if (add_aux_fields) |
6685 | { | |
6686 | free (sec->contents); | |
6687 | sec->contents = new_contents; | |
6688 | } | |
6689 | ||
05bf9422 | 6690 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6691 | elf_bfd_final_link if we are emitting relocs. */ |
6692 | elf_section_data (sec)->rel_hdr.sh_size | |
6693 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6694 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6695 | some_edited = TRUE; |
1e2f5b6e | 6696 | } |
6cdc0ccc | 6697 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6698 | free (relstart); |
6cdc0ccc | 6699 | |
411e1bfb AM |
6700 | if (local_syms != NULL |
6701 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6702 | { | |
6703 | if (!info->keep_memory) | |
6704 | free (local_syms); | |
6705 | else | |
6706 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6707 | } | |
6708 | } | |
6709 | ||
754021d0 AM |
6710 | if (some_edited) |
6711 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6712 | ||
3f764659 JJ |
6713 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6714 | long, add a 8 byte padding after it. */ | |
6715 | if (need_pad != NULL && !info->relocatable) | |
6716 | { | |
6717 | bfd_byte *p; | |
6718 | ||
6719 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6720 | { | |
6721 | BFD_ASSERT (need_pad->size > 0); | |
6722 | ||
6723 | p = bfd_malloc (need_pad->size + 8); | |
6724 | if (p == NULL) | |
6725 | return FALSE; | |
699733f6 | 6726 | |
3f764659 JJ |
6727 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6728 | p, 0, need_pad->size)) | |
6729 | return FALSE; | |
6730 | ||
6731 | need_pad->contents = p; | |
6732 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6733 | } | |
6734 | else | |
6735 | { | |
6736 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6737 | if (p == NULL) | |
6738 | return FALSE; | |
6739 | ||
6740 | need_pad->contents = p; | |
6741 | } | |
6742 | ||
6743 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6744 | need_pad->size += 8; | |
6745 | } | |
6746 | ||
411e1bfb AM |
6747 | return TRUE; |
6748 | } | |
6749 | ||
e1918d23 | 6750 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6751 | |
e1918d23 | 6752 | asection * |
4ce794b7 | 6753 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6754 | { |
411e1bfb AM |
6755 | struct ppc_link_hash_table *htab; |
6756 | ||
411e1bfb | 6757 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6758 | if (htab->tls_get_addr != NULL) |
6759 | { | |
8387904d | 6760 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6761 | |
8387904d AM |
6762 | while (h->elf.root.type == bfd_link_hash_indirect |
6763 | || h->elf.root.type == bfd_link_hash_warning) | |
6764 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6765 | |
6766 | htab->tls_get_addr = h; | |
8387904d AM |
6767 | |
6768 | if (htab->tls_get_addr_fd == NULL | |
6769 | && h->oh != NULL | |
c4f68ce3 AM |
6770 | && h->oh->is_func_descriptor |
6771 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6772 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6773 | htab->tls_get_addr_fd = h->oh; |
6774 | } | |
6775 | ||
6776 | if (htab->tls_get_addr_fd != NULL) | |
6777 | { | |
6778 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6779 | ||
6780 | while (h->elf.root.type == bfd_link_hash_indirect | |
6781 | || h->elf.root.type == bfd_link_hash_warning) | |
6782 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6783 | ||
6784 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6785 | } |
6786 | ||
e1918d23 | 6787 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6788 | } |
411e1bfb | 6789 | |
951fd09b AM |
6790 | /* Run through all the TLS relocs looking for optimization |
6791 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6792 | a preliminary section layout so that we know the TLS segment | |
6793 | offsets. We can't optimize earlier because some optimizations need | |
6794 | to know the tp offset, and we need to optimize before allocating | |
6795 | dynamic relocations. */ | |
6796 | ||
6797 | bfd_boolean | |
4ce794b7 | 6798 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6799 | { |
6800 | bfd *ibfd; | |
6801 | asection *sec; | |
6802 | struct ppc_link_hash_table *htab; | |
102890f0 | 6803 | int pass; |
951fd09b | 6804 | |
1049f94e | 6805 | if (info->relocatable || info->shared) |
411e1bfb AM |
6806 | return TRUE; |
6807 | ||
951fd09b | 6808 | htab = ppc_hash_table (info); |
411e1bfb AM |
6809 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6810 | { | |
6811 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6812 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6813 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6814 | |
102890f0 AM |
6815 | /* Look at all the sections for this file. Make two passes over |
6816 | the relocs. On the first pass, mark toc entries involved | |
6817 | with tls relocs, and check that tls relocs involved in | |
6818 | setting up a tls_get_addr call are indeed followed by such a | |
6819 | call. If they are not, exclude them from the optimizations | |
6820 | done on the second pass. */ | |
6821 | for (pass = 0; pass < 2; ++pass) | |
6822 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6823 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6824 | { | |
6825 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 6826 | |
102890f0 AM |
6827 | /* Read the relocations. */ |
6828 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
6829 | info->keep_memory); | |
6830 | if (relstart == NULL) | |
6831 | return FALSE; | |
411e1bfb | 6832 | |
102890f0 AM |
6833 | relend = relstart + sec->reloc_count; |
6834 | for (rel = relstart; rel < relend; rel++) | |
6835 | { | |
6836 | enum elf_ppc64_reloc_type r_type; | |
6837 | unsigned long r_symndx; | |
6838 | struct elf_link_hash_entry *h; | |
6839 | Elf_Internal_Sym *sym; | |
6840 | asection *sym_sec; | |
6841 | char *tls_mask; | |
6842 | char tls_set, tls_clear, tls_type = 0; | |
6843 | bfd_vma value; | |
6844 | bfd_boolean ok_tprel, is_local; | |
6845 | long toc_ref_index = 0; | |
6846 | int expecting_tls_get_addr = 0; | |
411e1bfb | 6847 | |
102890f0 AM |
6848 | r_symndx = ELF64_R_SYM (rel->r_info); |
6849 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
6850 | r_symndx, ibfd)) | |
6851 | { | |
6852 | err_free_rel: | |
6853 | if (elf_section_data (sec)->relocs != relstart) | |
6854 | free (relstart); | |
6855 | if (toc_ref != NULL) | |
6856 | free (toc_ref); | |
6857 | if (locsyms != NULL | |
6858 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6859 | != (unsigned char *) locsyms)) | |
6860 | free (locsyms); | |
6861 | return FALSE; | |
6862 | } | |
411e1bfb | 6863 | |
102890f0 AM |
6864 | if (h != NULL) |
6865 | { | |
6866 | if (h->root.type != bfd_link_hash_defined | |
6867 | && h->root.type != bfd_link_hash_defweak) | |
6868 | continue; | |
6869 | value = h->root.u.def.value; | |
6870 | } | |
6871 | else | |
6872 | /* Symbols referenced by TLS relocs must be of type | |
6873 | STT_TLS. So no need for .opd local sym adjust. */ | |
6874 | value = sym->st_value; | |
6875 | ||
6876 | ok_tprel = FALSE; | |
6877 | is_local = FALSE; | |
6878 | if (h == NULL | |
6879 | || !h->def_dynamic) | |
6880 | { | |
6881 | is_local = TRUE; | |
6882 | value += sym_sec->output_offset; | |
6883 | value += sym_sec->output_section->vma; | |
6884 | value -= htab->elf.tls_sec->vma; | |
6885 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
6886 | < (bfd_vma) 1 << 32); | |
6887 | } | |
951fd09b | 6888 | |
102890f0 AM |
6889 | r_type = ELF64_R_TYPE (rel->r_info); |
6890 | switch (r_type) | |
6891 | { | |
6892 | case R_PPC64_GOT_TLSLD16: | |
6893 | case R_PPC64_GOT_TLSLD16_LO: | |
6894 | expecting_tls_get_addr = 1; | |
6895 | /* Fall thru */ | |
6896 | ||
6897 | case R_PPC64_GOT_TLSLD16_HI: | |
6898 | case R_PPC64_GOT_TLSLD16_HA: | |
6899 | /* These relocs should never be against a symbol | |
6900 | defined in a shared lib. Leave them alone if | |
6901 | that turns out to be the case. */ | |
6902 | if (!is_local) | |
6903 | continue; | |
411e1bfb | 6904 | |
102890f0 | 6905 | /* LD -> LE */ |
411e1bfb | 6906 | tls_set = 0; |
102890f0 AM |
6907 | tls_clear = TLS_LD; |
6908 | tls_type = TLS_TLS | TLS_LD; | |
6909 | break; | |
411e1bfb | 6910 | |
102890f0 AM |
6911 | case R_PPC64_GOT_TLSGD16: |
6912 | case R_PPC64_GOT_TLSGD16_LO: | |
6913 | expecting_tls_get_addr = 1; | |
6914 | /* Fall thru */ | |
6915 | ||
6916 | case R_PPC64_GOT_TLSGD16_HI: | |
6917 | case R_PPC64_GOT_TLSGD16_HA: | |
6918 | if (ok_tprel) | |
6919 | /* GD -> LE */ | |
411e1bfb | 6920 | tls_set = 0; |
102890f0 AM |
6921 | else |
6922 | /* GD -> IE */ | |
6923 | tls_set = TLS_TLS | TLS_TPRELGD; | |
6924 | tls_clear = TLS_GD; | |
6925 | tls_type = TLS_TLS | TLS_GD; | |
6926 | break; | |
6927 | ||
6928 | case R_PPC64_GOT_TPREL16_DS: | |
6929 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6930 | case R_PPC64_GOT_TPREL16_HI: | |
6931 | case R_PPC64_GOT_TPREL16_HA: | |
6932 | if (ok_tprel) | |
6933 | { | |
6934 | /* IE -> LE */ | |
6935 | tls_set = 0; | |
6936 | tls_clear = TLS_TPREL; | |
6937 | tls_type = TLS_TLS | TLS_TPREL; | |
6938 | break; | |
6939 | } | |
411e1bfb AM |
6940 | continue; |
6941 | ||
102890f0 AM |
6942 | case R_PPC64_TOC16: |
6943 | case R_PPC64_TOC16_LO: | |
6944 | case R_PPC64_TLS: | |
6945 | if (sym_sec == NULL || sym_sec != toc) | |
6946 | continue; | |
6947 | ||
6948 | /* Mark this toc entry as referenced by a TLS | |
6949 | code sequence. We can do that now in the | |
6950 | case of R_PPC64_TLS, and after checking for | |
6951 | tls_get_addr for the TOC16 relocs. */ | |
6952 | if (toc_ref == NULL) | |
6953 | { | |
6954 | toc_ref = bfd_zmalloc (toc->size / 8); | |
6955 | if (toc_ref == NULL) | |
6956 | goto err_free_rel; | |
6957 | } | |
6958 | if (h != NULL) | |
6959 | value = h->root.u.def.value; | |
6960 | else | |
6961 | value = sym->st_value; | |
6962 | value += rel->r_addend; | |
6963 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
6964 | toc_ref_index = value / 8; | |
6965 | if (r_type == R_PPC64_TLS) | |
6966 | { | |
6967 | toc_ref[toc_ref_index] = 1; | |
6968 | continue; | |
6969 | } | |
6970 | ||
6971 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
6972 | continue; | |
6973 | ||
6974 | tls_set = 0; | |
6975 | tls_clear = 0; | |
6976 | expecting_tls_get_addr = 2; | |
6977 | break; | |
6978 | ||
6979 | case R_PPC64_TPREL64: | |
6980 | if (pass == 0 | |
6981 | || sec != toc | |
6982 | || toc_ref == NULL | |
6983 | || !toc_ref[rel->r_offset / 8]) | |
6984 | continue; | |
6985 | if (ok_tprel) | |
6986 | { | |
6987 | /* IE -> LE */ | |
6988 | tls_set = TLS_EXPLICIT; | |
6989 | tls_clear = TLS_TPREL; | |
6990 | break; | |
6991 | } | |
6992 | continue; | |
6993 | ||
6994 | case R_PPC64_DTPMOD64: | |
6995 | if (pass == 0 | |
6996 | || sec != toc | |
6997 | || toc_ref == NULL | |
6998 | || !toc_ref[rel->r_offset / 8]) | |
6999 | continue; | |
7000 | if (rel + 1 < relend | |
7001 | && (rel[1].r_info | |
7002 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7003 | && rel[1].r_offset == rel->r_offset + 8) | |
7004 | { | |
7005 | if (ok_tprel) | |
7006 | /* GD -> LE */ | |
7007 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7008 | else | |
7009 | /* GD -> IE */ | |
7010 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7011 | tls_clear = TLS_GD; | |
7012 | } | |
7013 | else | |
7014 | { | |
7015 | if (!is_local) | |
7016 | continue; | |
7017 | ||
7018 | /* LD -> LE */ | |
7019 | tls_set = TLS_EXPLICIT; | |
7020 | tls_clear = TLS_LD; | |
7021 | } | |
7022 | break; | |
7023 | ||
7024 | default: | |
7025 | continue; | |
7026 | } | |
7027 | ||
7028 | if (pass == 0) | |
7029 | { | |
7030 | if (!expecting_tls_get_addr) | |
7031 | continue; | |
7032 | ||
7033 | if (rel + 1 < relend) | |
7034 | { | |
7035 | Elf_Internal_Shdr *symtab_hdr; | |
7036 | enum elf_ppc64_reloc_type r_type2; | |
7037 | unsigned long r_symndx2; | |
7038 | struct elf_link_hash_entry *h2; | |
7039 | ||
7040 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7041 | ||
7042 | /* The next instruction should be a call to | |
7043 | __tls_get_addr. Peek at the reloc to be sure. */ | |
7044 | r_type2 = ELF64_R_TYPE (rel[1].r_info); | |
7045 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); | |
7046 | if (r_symndx2 >= symtab_hdr->sh_info | |
7047 | && (r_type2 == R_PPC64_REL14 | |
7048 | || r_type2 == R_PPC64_REL14_BRTAKEN | |
7049 | || r_type2 == R_PPC64_REL14_BRNTAKEN | |
7050 | || r_type2 == R_PPC64_REL24)) | |
7051 | { | |
7052 | struct elf_link_hash_entry **sym_hashes; | |
7053 | ||
7054 | sym_hashes = elf_sym_hashes (ibfd); | |
7055 | ||
7056 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
7057 | while (h2->root.type == bfd_link_hash_indirect | |
7058 | || h2->root.type == bfd_link_hash_warning) | |
7059 | h2 = ((struct elf_link_hash_entry *) | |
7060 | h2->root.u.i.link); | |
7061 | if (h2 != NULL | |
7062 | && (h2 == &htab->tls_get_addr->elf | |
7063 | || h2 == &htab->tls_get_addr_fd->elf)) | |
7064 | { | |
7065 | if (expecting_tls_get_addr == 2) | |
7066 | { | |
7067 | /* Check for toc tls entries. */ | |
7068 | char *toc_tls; | |
7069 | int retval; | |
7070 | ||
7071 | retval = get_tls_mask (&toc_tls, NULL, | |
7072 | &locsyms, | |
7073 | rel, ibfd); | |
7074 | if (retval == 0) | |
7075 | goto err_free_rel; | |
7076 | if (retval > 1 && toc_tls != NULL) | |
7077 | toc_ref[toc_ref_index] = 1; | |
7078 | } | |
7079 | continue; | |
7080 | } | |
7081 | } | |
7082 | } | |
7083 | ||
7084 | if (expecting_tls_get_addr != 1) | |
7085 | continue; | |
7086 | ||
7087 | /* Uh oh, we didn't find the expected call. We | |
7088 | could just mark this symbol to exclude it | |
7089 | from tls optimization but it's safer to skip | |
7090 | the entire section. */ | |
7091 | sec->has_tls_reloc = 0; | |
7092 | break; | |
7093 | } | |
7094 | ||
7095 | if (expecting_tls_get_addr) | |
7096 | { | |
7097 | struct plt_entry *ent; | |
7098 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7099 | ent != NULL; | |
7100 | ent = ent->next) | |
7101 | if (ent->addend == 0) | |
411e1bfb | 7102 | { |
102890f0 | 7103 | if (ent->plt.refcount > 0) |
30038c59 | 7104 | { |
102890f0 AM |
7105 | ent->plt.refcount -= 1; |
7106 | expecting_tls_get_addr = 0; | |
30038c59 | 7107 | } |
102890f0 | 7108 | break; |
411e1bfb | 7109 | } |
102890f0 | 7110 | } |
411e1bfb | 7111 | |
102890f0 AM |
7112 | if (expecting_tls_get_addr) |
7113 | { | |
7114 | struct plt_entry *ent; | |
7115 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7116 | ent != NULL; | |
7117 | ent = ent->next) | |
7118 | if (ent->addend == 0) | |
411e1bfb | 7119 | { |
102890f0 AM |
7120 | if (ent->plt.refcount > 0) |
7121 | ent->plt.refcount -= 1; | |
7122 | break; | |
411e1bfb | 7123 | } |
102890f0 | 7124 | } |
411e1bfb | 7125 | |
102890f0 | 7126 | if (tls_clear == 0) |
30038c59 AM |
7127 | continue; |
7128 | ||
102890f0 AM |
7129 | if ((tls_set & TLS_EXPLICIT) == 0) |
7130 | { | |
7131 | struct got_entry *ent; | |
411e1bfb | 7132 | |
102890f0 AM |
7133 | /* Adjust got entry for this reloc. */ |
7134 | if (h != NULL) | |
7135 | ent = h->got.glist; | |
7136 | else | |
7137 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7138 | |
102890f0 AM |
7139 | for (; ent != NULL; ent = ent->next) |
7140 | if (ent->addend == rel->r_addend | |
7141 | && ent->owner == ibfd | |
7142 | && ent->tls_type == tls_type) | |
7143 | break; | |
7144 | if (ent == NULL) | |
7145 | abort (); | |
411e1bfb | 7146 | |
102890f0 AM |
7147 | if (tls_set == 0) |
7148 | { | |
7149 | /* We managed to get rid of a got entry. */ | |
7150 | if (ent->got.refcount > 0) | |
7151 | ent->got.refcount -= 1; | |
7152 | } | |
7153 | } | |
7154 | else | |
7155 | { | |
7156 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7157 | we'll lose one or two dyn relocs. */ | |
7158 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7159 | NULL, h, sym_sec)) | |
7160 | return FALSE; | |
411e1bfb | 7161 | |
102890f0 AM |
7162 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7163 | { | |
7164 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7165 | NULL, h, sym_sec)) | |
7166 | return FALSE; | |
7167 | } | |
7168 | } | |
411e1bfb | 7169 | |
102890f0 AM |
7170 | *tls_mask |= tls_set; |
7171 | *tls_mask &= ~tls_clear; | |
7172 | } | |
8c1d1bb8 | 7173 | |
102890f0 AM |
7174 | if (elf_section_data (sec)->relocs != relstart) |
7175 | free (relstart); | |
7176 | } | |
411e1bfb | 7177 | |
102890f0 AM |
7178 | if (toc_ref != NULL) |
7179 | free (toc_ref); | |
411e1bfb | 7180 | |
102890f0 AM |
7181 | if (locsyms != NULL |
7182 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
7183 | != (unsigned char *) locsyms)) | |
7184 | { | |
7185 | if (!info->keep_memory) | |
7186 | free (locsyms); | |
7187 | else | |
7188 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; | |
411e1bfb | 7189 | } |
102890f0 | 7190 | } |
b34976b6 | 7191 | return TRUE; |
1e2f5b6e | 7192 | } |
b34976b6 | 7193 | |
c5614fa4 AM |
7194 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7195 | the values of any global symbols in a toc section that has been | |
7196 | edited. Globals in toc sections should be a rarity, so this function | |
7197 | sets a flag if any are found in toc sections other than the one just | |
7198 | edited, so that futher hash table traversals can be avoided. */ | |
7199 | ||
7200 | struct adjust_toc_info | |
7201 | { | |
7202 | asection *toc; | |
7203 | unsigned long *skip; | |
7204 | bfd_boolean global_toc_syms; | |
7205 | }; | |
7206 | ||
7207 | static bfd_boolean | |
7208 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7209 | { | |
7210 | struct ppc_link_hash_entry *eh; | |
7211 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7212 | ||
7213 | if (h->root.type == bfd_link_hash_indirect) | |
7214 | return TRUE; | |
7215 | ||
7216 | if (h->root.type == bfd_link_hash_warning) | |
7217 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7218 | ||
7219 | if (h->root.type != bfd_link_hash_defined | |
7220 | && h->root.type != bfd_link_hash_defweak) | |
7221 | return TRUE; | |
7222 | ||
7223 | eh = (struct ppc_link_hash_entry *) h; | |
7224 | if (eh->adjust_done) | |
7225 | return TRUE; | |
7226 | ||
7227 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7228 | { | |
7229 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7230 | if (skip != (unsigned long) -1) | |
7231 | eh->elf.root.u.def.value -= skip; | |
7232 | else | |
7233 | { | |
7234 | (*_bfd_error_handler) | |
7235 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7236 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7237 | eh->elf.root.u.def.value = 0; | |
7238 | } | |
7239 | eh->adjust_done = 1; | |
7240 | } | |
7241 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7242 | toc_inf->global_toc_syms = TRUE; | |
7243 | ||
7244 | return TRUE; | |
7245 | } | |
7246 | ||
7247 | /* Examine all relocs referencing .toc sections in order to remove | |
7248 | unused .toc entries. */ | |
7249 | ||
7250 | bfd_boolean | |
7251 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7252 | { | |
7253 | bfd *ibfd; | |
7254 | struct adjust_toc_info toc_inf; | |
7255 | ||
7256 | toc_inf.global_toc_syms = TRUE; | |
7257 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7258 | { | |
7259 | asection *toc, *sec; | |
7260 | Elf_Internal_Shdr *symtab_hdr; | |
7261 | Elf_Internal_Sym *local_syms; | |
7262 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7263 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7264 | unsigned long *skip, *drop; |
7265 | unsigned char *used; | |
7266 | unsigned char *keep, last, some_unused; | |
7267 | ||
7268 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7269 | if (toc == NULL | |
92b7a70f | 7270 | || toc->size == 0 |
c5614fa4 AM |
7271 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7272 | || elf_discarded_section (toc)) | |
7273 | continue; | |
7274 | ||
7275 | local_syms = NULL; | |
7276 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7277 | sym_hashes = elf_sym_hashes (ibfd); | |
7278 | ||
7279 | /* Look at sections dropped from the final link. */ | |
7280 | skip = NULL; | |
7281 | relstart = NULL; | |
7282 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7283 | { | |
7284 | if (sec->reloc_count == 0 | |
7285 | || !elf_discarded_section (sec) | |
7286 | || get_opd_info (sec) | |
7287 | || (sec->flags & SEC_ALLOC) == 0 | |
7288 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7289 | continue; | |
7290 | ||
7291 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7292 | if (relstart == NULL) | |
7293 | goto error_ret; | |
7294 | ||
7295 | /* Run through the relocs to see which toc entries might be | |
7296 | unused. */ | |
7297 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7298 | { | |
7299 | enum elf_ppc64_reloc_type r_type; | |
7300 | unsigned long r_symndx; | |
7301 | asection *sym_sec; | |
7302 | struct elf_link_hash_entry *h; | |
7303 | Elf_Internal_Sym *sym; | |
7304 | bfd_vma val; | |
7305 | ||
7306 | r_type = ELF64_R_TYPE (rel->r_info); | |
7307 | switch (r_type) | |
7308 | { | |
7309 | default: | |
7310 | continue; | |
7311 | ||
7312 | case R_PPC64_TOC16: | |
7313 | case R_PPC64_TOC16_LO: | |
7314 | case R_PPC64_TOC16_HI: | |
7315 | case R_PPC64_TOC16_HA: | |
7316 | case R_PPC64_TOC16_DS: | |
7317 | case R_PPC64_TOC16_LO_DS: | |
7318 | break; | |
7319 | } | |
7320 | ||
7321 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7322 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7323 | r_symndx, ibfd)) | |
7324 | goto error_ret; | |
7325 | ||
7326 | if (sym_sec != toc) | |
7327 | continue; | |
7328 | ||
7329 | if (h != NULL) | |
7330 | val = h->root.u.def.value; | |
7331 | else | |
7332 | val = sym->st_value; | |
7333 | val += rel->r_addend; | |
7334 | ||
7335 | if (val >= toc->size) | |
7336 | continue; | |
7337 | ||
7338 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7339 | If not, don't mark as unused. */ | |
7340 | if (val & 7) | |
7341 | continue; | |
7342 | ||
7343 | if (skip == NULL) | |
7344 | { | |
7345 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7346 | if (skip == NULL) | |
7347 | goto error_ret; | |
7348 | } | |
7349 | ||
7350 | skip[val >> 3] = 1; | |
7351 | } | |
7352 | ||
7353 | if (elf_section_data (sec)->relocs != relstart) | |
7354 | free (relstart); | |
7355 | } | |
7356 | ||
7357 | if (skip == NULL) | |
7358 | continue; | |
7359 | ||
7360 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7361 | if (used == NULL) | |
7362 | { | |
7363 | error_ret: | |
7364 | if (local_syms != NULL | |
7365 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7366 | free (local_syms); | |
7367 | if (sec != NULL | |
7368 | && relstart != NULL | |
7369 | && elf_section_data (sec)->relocs != relstart) | |
7370 | free (relstart); | |
7371 | if (skip != NULL) | |
7372 | free (skip); | |
7373 | return FALSE; | |
7374 | } | |
7375 | ||
30038c59 AM |
7376 | /* Now check all kept sections that might reference the toc. |
7377 | Check the toc itself last. */ | |
7378 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7379 | : ibfd->sections); | |
c5614fa4 | 7380 | sec != NULL; |
c5614fa4 | 7381 | sec = (sec == toc ? NULL |
c5614fa4 | 7382 | : sec->next == NULL ? toc |
30038c59 | 7383 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7384 | : sec->next)) |
7385 | { | |
7386 | int repeat; | |
7387 | ||
7388 | if (sec->reloc_count == 0 | |
7389 | || elf_discarded_section (sec) | |
7390 | || get_opd_info (sec) | |
7391 | || (sec->flags & SEC_ALLOC) == 0 | |
7392 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7393 | continue; | |
7394 | ||
7395 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7396 | if (relstart == NULL) | |
7397 | goto error_ret; | |
7398 | ||
7399 | /* Mark toc entries referenced as used. */ | |
7400 | repeat = 0; | |
7401 | do | |
7402 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7403 | { | |
7404 | enum elf_ppc64_reloc_type r_type; | |
7405 | unsigned long r_symndx; | |
7406 | asection *sym_sec; | |
7407 | struct elf_link_hash_entry *h; | |
7408 | Elf_Internal_Sym *sym; | |
7409 | bfd_vma val; | |
7410 | ||
7411 | r_type = ELF64_R_TYPE (rel->r_info); | |
7412 | switch (r_type) | |
7413 | { | |
7414 | case R_PPC64_TOC16: | |
7415 | case R_PPC64_TOC16_LO: | |
7416 | case R_PPC64_TOC16_HI: | |
7417 | case R_PPC64_TOC16_HA: | |
7418 | case R_PPC64_TOC16_DS: | |
7419 | case R_PPC64_TOC16_LO_DS: | |
7420 | /* In case we're taking addresses of toc entries. */ | |
7421 | case R_PPC64_ADDR64: | |
7422 | break; | |
7423 | ||
7424 | default: | |
7425 | continue; | |
7426 | } | |
7427 | ||
7428 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7429 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7430 | r_symndx, ibfd)) | |
7431 | { | |
7432 | free (used); | |
7433 | goto error_ret; | |
7434 | } | |
7435 | ||
7436 | if (sym_sec != toc) | |
7437 | continue; | |
7438 | ||
7439 | if (h != NULL) | |
7440 | val = h->root.u.def.value; | |
7441 | else | |
7442 | val = sym->st_value; | |
7443 | val += rel->r_addend; | |
7444 | ||
7445 | if (val >= toc->size) | |
7446 | continue; | |
7447 | ||
7448 | /* For the toc section, we only mark as used if | |
7449 | this entry itself isn't unused. */ | |
7450 | if (sec == toc | |
7451 | && !used[val >> 3] | |
7452 | && (used[rel->r_offset >> 3] | |
7453 | || !skip[rel->r_offset >> 3])) | |
7454 | /* Do all the relocs again, to catch reference | |
7455 | chains. */ | |
7456 | repeat = 1; | |
7457 | ||
7458 | used[val >> 3] = 1; | |
7459 | } | |
7460 | while (repeat); | |
7461 | } | |
7462 | ||
7463 | /* Merge the used and skip arrays. Assume that TOC | |
7464 | doublewords not appearing as either used or unused belong | |
7465 | to to an entry more than one doubleword in size. */ | |
7466 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7467 | drop < skip + (toc->size + 7) / 8; | |
7468 | ++drop, ++keep) | |
7469 | { | |
7470 | if (*keep) | |
7471 | { | |
7472 | *drop = 0; | |
7473 | last = 0; | |
7474 | } | |
7475 | else if (*drop) | |
7476 | { | |
7477 | some_unused = 1; | |
7478 | last = 1; | |
7479 | } | |
7480 | else | |
7481 | *drop = last; | |
7482 | } | |
7483 | ||
7484 | free (used); | |
7485 | ||
7486 | if (some_unused) | |
7487 | { | |
7488 | bfd_byte *contents, *src; | |
7489 | unsigned long off; | |
7490 | ||
7491 | /* Shuffle the toc contents, and at the same time convert the | |
7492 | skip array from booleans into offsets. */ | |
7493 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7494 | goto error_ret; | |
7495 | ||
7496 | elf_section_data (toc)->this_hdr.contents = contents; | |
7497 | ||
7498 | for (src = contents, off = 0, drop = skip; | |
7499 | src < contents + toc->size; | |
7500 | src += 8, ++drop) | |
7501 | { | |
7502 | if (*drop) | |
7503 | { | |
7504 | *drop = (unsigned long) -1; | |
7505 | off += 8; | |
7506 | } | |
7507 | else if (off != 0) | |
7508 | { | |
7509 | *drop = off; | |
7510 | memcpy (src - off, src, 8); | |
7511 | } | |
7512 | } | |
7513 | toc->rawsize = toc->size; | |
7514 | toc->size = src - contents - off; | |
7515 | ||
92b7a70f AM |
7516 | if (toc->reloc_count != 0) |
7517 | { | |
7518 | Elf_Internal_Rela *wrel; | |
7519 | bfd_size_type sz; | |
c5614fa4 | 7520 | |
92b7a70f AM |
7521 | /* Read toc relocs. */ |
7522 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7523 | TRUE); | |
7524 | if (relstart == NULL) | |
7525 | goto error_ret; | |
7526 | ||
7527 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7528 | wrel = relstart; | |
7529 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7530 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7531 | { | |
7532 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7533 | wrel->r_info = rel->r_info; | |
7534 | wrel->r_addend = rel->r_addend; | |
7535 | ++wrel; | |
7536 | } | |
8c1d1bb8 AM |
7537 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7538 | &local_syms, NULL, NULL)) | |
7539 | goto error_ret; | |
35090471 | 7540 | |
92b7a70f AM |
7541 | toc->reloc_count = wrel - relstart; |
7542 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7543 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7544 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7545 | } | |
c5614fa4 AM |
7546 | |
7547 | /* Adjust addends for relocs against the toc section sym. */ | |
7548 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7549 | { | |
7550 | if (sec->reloc_count == 0 | |
7551 | || elf_discarded_section (sec)) | |
7552 | continue; | |
7553 | ||
7554 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7555 | TRUE); | |
7556 | if (relstart == NULL) | |
7557 | goto error_ret; | |
7558 | ||
7559 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7560 | { | |
7561 | enum elf_ppc64_reloc_type r_type; | |
7562 | unsigned long r_symndx; | |
7563 | asection *sym_sec; | |
7564 | struct elf_link_hash_entry *h; | |
7565 | Elf_Internal_Sym *sym; | |
7566 | ||
7567 | r_type = ELF64_R_TYPE (rel->r_info); | |
7568 | switch (r_type) | |
7569 | { | |
7570 | default: | |
7571 | continue; | |
7572 | ||
7573 | case R_PPC64_TOC16: | |
7574 | case R_PPC64_TOC16_LO: | |
7575 | case R_PPC64_TOC16_HI: | |
7576 | case R_PPC64_TOC16_HA: | |
7577 | case R_PPC64_TOC16_DS: | |
7578 | case R_PPC64_TOC16_LO_DS: | |
7579 | case R_PPC64_ADDR64: | |
7580 | break; | |
7581 | } | |
7582 | ||
7583 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7584 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7585 | r_symndx, ibfd)) | |
7586 | goto error_ret; | |
7587 | ||
7588 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7589 | continue; | |
7590 | ||
7591 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7592 | } | |
7593 | } | |
7594 | ||
7595 | /* We shouldn't have local or global symbols defined in the TOC, | |
7596 | but handle them anyway. */ | |
7597 | if (local_syms != NULL) | |
7598 | { | |
7599 | Elf_Internal_Sym *sym; | |
7600 | ||
7601 | for (sym = local_syms; | |
7602 | sym < local_syms + symtab_hdr->sh_info; | |
7603 | ++sym) | |
7604 | if (sym->st_shndx != SHN_UNDEF | |
7605 | && (sym->st_shndx < SHN_LORESERVE | |
7606 | || sym->st_shndx > SHN_HIRESERVE) | |
7607 | && sym->st_value != 0 | |
7608 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7609 | { | |
7610 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7611 | sym->st_value -= skip[sym->st_value >> 3]; | |
7612 | else | |
7613 | { | |
7614 | (*_bfd_error_handler) | |
7615 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7616 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7617 | NULL)); | |
c5614fa4 AM |
7618 | sym->st_value = 0; |
7619 | sym->st_shndx = SHN_ABS; | |
7620 | } | |
7621 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7622 | } | |
7623 | } | |
7624 | ||
7625 | /* Finally, adjust any global syms defined in the toc. */ | |
7626 | if (toc_inf.global_toc_syms) | |
7627 | { | |
7628 | toc_inf.toc = toc; | |
7629 | toc_inf.skip = skip; | |
7630 | toc_inf.global_toc_syms = FALSE; | |
7631 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7632 | &toc_inf); | |
7633 | } | |
7634 | } | |
7635 | ||
7636 | if (local_syms != NULL | |
7637 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7638 | { | |
7639 | if (!info->keep_memory) | |
7640 | free (local_syms); | |
7641 | else | |
7642 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7643 | } | |
7644 | free (skip); | |
7645 | } | |
7646 | ||
7647 | return TRUE; | |
7648 | } | |
7649 | ||
65f38f15 AM |
7650 | /* Allocate space in .plt, .got and associated reloc sections for |
7651 | dynamic relocs. */ | |
5bd4f169 | 7652 | |
b34976b6 | 7653 | static bfd_boolean |
4ce794b7 | 7654 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7655 | { |
65f38f15 AM |
7656 | struct bfd_link_info *info; |
7657 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7658 | asection *s; |
65f38f15 AM |
7659 | struct ppc_link_hash_entry *eh; |
7660 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7661 | struct got_entry *gent; |
5bd4f169 | 7662 | |
e92d460e | 7663 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7664 | return TRUE; |
5bd4f169 | 7665 | |
e92d460e AM |
7666 | if (h->root.type == bfd_link_hash_warning) |
7667 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7668 | ||
65f38f15 AM |
7669 | info = (struct bfd_link_info *) inf; |
7670 | htab = ppc_hash_table (info); | |
5bd4f169 | 7671 | |
65f38f15 | 7672 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7673 | && h->dynindx != -1 |
9c7a29a3 | 7674 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7675 | { |
411e1bfb AM |
7676 | struct plt_entry *pent; |
7677 | bfd_boolean doneone = FALSE; | |
7678 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7679 | if (pent->plt.refcount > 0) | |
7680 | { | |
411e1bfb AM |
7681 | /* If this is the first .plt entry, make room for the special |
7682 | first entry. */ | |
4ce794b7 | 7683 | s = htab->plt; |
eea6121a AM |
7684 | if (s->size == 0) |
7685 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7686 | |
eea6121a | 7687 | pent->plt.offset = s->size; |
411e1bfb AM |
7688 | |
7689 | /* Make room for this entry. */ | |
eea6121a | 7690 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7691 | |
7692 | /* Make room for the .glink code. */ | |
4ce794b7 | 7693 | s = htab->glink; |
eea6121a AM |
7694 | if (s->size == 0) |
7695 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7696 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7697 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7698 | s->size += 4; | |
7699 | s->size += 2*4; | |
411e1bfb AM |
7700 | |
7701 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7702 | s = htab->relplt; |
eea6121a | 7703 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7704 | doneone = TRUE; |
7705 | } | |
7706 | else | |
7707 | pent->plt.offset = (bfd_vma) -1; | |
7708 | if (!doneone) | |
65f38f15 | 7709 | { |
411e1bfb | 7710 | h->plt.plist = NULL; |
f5385ebf | 7711 | h->needs_plt = 0; |
65f38f15 AM |
7712 | } |
7713 | } | |
7714 | else | |
7715 | { | |
411e1bfb | 7716 | h->plt.plist = NULL; |
f5385ebf | 7717 | h->needs_plt = 0; |
65f38f15 AM |
7718 | } |
7719 | ||
951fd09b AM |
7720 | eh = (struct ppc_link_hash_entry *) h; |
7721 | /* Run through the TLS GD got entries first if we're changing them | |
7722 | to TPREL. */ | |
e7b938ca | 7723 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7724 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7725 | if (gent->got.refcount > 0 | |
7726 | && (gent->tls_type & TLS_GD) != 0) | |
7727 | { | |
7728 | /* This was a GD entry that has been converted to TPREL. If | |
7729 | there happens to be a TPREL entry we can use that one. */ | |
7730 | struct got_entry *ent; | |
7731 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7732 | if (ent->got.refcount > 0 | |
7733 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7734 | && ent->addend == gent->addend |
7735 | && ent->owner == gent->owner) | |
951fd09b AM |
7736 | { |
7737 | gent->got.refcount = 0; | |
7738 | break; | |
7739 | } | |
7740 | ||
7741 | /* If not, then we'll be using our own TPREL entry. */ | |
7742 | if (gent->got.refcount != 0) | |
7743 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7744 | } | |
7745 | ||
411e1bfb AM |
7746 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7747 | if (gent->got.refcount > 0) | |
7748 | { | |
951fd09b AM |
7749 | bfd_boolean dyn; |
7750 | ||
411e1bfb | 7751 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7752 | Undefined weak syms won't yet be marked as dynamic, |
7753 | nor will all TLS symbols. */ | |
411e1bfb | 7754 | if (h->dynindx == -1 |
f5385ebf | 7755 | && !h->forced_local) |
411e1bfb | 7756 | { |
c152c796 | 7757 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7758 | return FALSE; |
7759 | } | |
65f38f15 | 7760 | |
d881513a | 7761 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7762 | && !h->def_dynamic) |
411e1bfb | 7763 | { |
102890f0 AM |
7764 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
7765 | gent->got.offset = (bfd_vma) -1; | |
951fd09b | 7766 | continue; |
411e1bfb | 7767 | } |
951fd09b | 7768 | |
e717da7e | 7769 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7770 | gent->got.offset = s->size; |
7771 | s->size | |
d881513a | 7772 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7773 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7774 | if ((info->shared |
7775 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7776 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7777 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7778 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7779 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7780 | ? 2 * sizeof (Elf64_External_Rela) |
7781 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7782 | } |
7783 | else | |
7784 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7785 | |
65f38f15 | 7786 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7787 | return TRUE; |
65f38f15 AM |
7788 | |
7789 | /* In the shared -Bsymbolic case, discard space allocated for | |
7790 | dynamic pc-relative relocs against symbols which turn out to be | |
7791 | defined in regular objects. For the normal shared case, discard | |
7792 | space for relocs that have become local due to symbol visibility | |
7793 | changes. */ | |
7794 | ||
7795 | if (info->shared) | |
7796 | { | |
9c7a29a3 AM |
7797 | /* Relocs that use pc_count are those that appear on a call insn, |
7798 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7799 | generated via assembly. We want calls to protected symbols to | |
7800 | resolve directly to the function rather than going via the plt. | |
7801 | If people want function pointer comparisons to work as expected | |
7802 | then they should avoid writing weird assembly. */ | |
09695f56 | 7803 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7804 | { |
7805 | struct ppc_dyn_relocs **pp; | |
7806 | ||
7807 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7808 | { |
65f38f15 AM |
7809 | p->count -= p->pc_count; |
7810 | p->pc_count = 0; | |
7811 | if (p->count == 0) | |
7812 | *pp = p->next; | |
7813 | else | |
7814 | pp = &p->next; | |
5bd4f169 | 7815 | } |
65f38f15 | 7816 | } |
4e795f50 AM |
7817 | |
7818 | /* Also discard relocs on undefined weak syms with non-default | |
7819 | visibility. */ | |
cab87ef9 AM |
7820 | if (eh->dyn_relocs != NULL |
7821 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7822 | { |
7823 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7824 | eh->dyn_relocs = NULL; | |
7825 | ||
7826 | /* Make sure this symbol is output as a dynamic symbol. | |
7827 | Undefined weak syms won't yet be marked as dynamic. */ | |
7828 | else if (h->dynindx == -1 | |
7829 | && !h->forced_local) | |
7830 | { | |
7831 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7832 | return FALSE; | |
7833 | } | |
7834 | } | |
65f38f15 | 7835 | } |
f4656909 | 7836 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7837 | { |
7838 | /* For the non-shared case, discard space for relocs against | |
7839 | symbols which turn out to need copy relocs or are not | |
7840 | dynamic. */ | |
7841 | ||
f5385ebf AM |
7842 | if (!h->non_got_ref |
7843 | && h->def_dynamic | |
7844 | && !h->def_regular) | |
65f38f15 AM |
7845 | { |
7846 | /* Make sure this symbol is output as a dynamic symbol. | |
7847 | Undefined weak syms won't yet be marked as dynamic. */ | |
7848 | if (h->dynindx == -1 | |
f5385ebf | 7849 | && !h->forced_local) |
65f38f15 | 7850 | { |
c152c796 | 7851 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7852 | return FALSE; |
65f38f15 AM |
7853 | } |
7854 | ||
7855 | /* If that succeeded, we know we'll be keeping all the | |
7856 | relocs. */ | |
7857 | if (h->dynindx != -1) | |
7858 | goto keep; | |
7859 | } | |
7860 | ||
7861 | eh->dyn_relocs = NULL; | |
7862 | ||
ec338859 | 7863 | keep: ; |
65f38f15 AM |
7864 | } |
7865 | ||
7866 | /* Finally, allocate space. */ | |
7867 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7868 | { | |
7869 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7870 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7871 | } |
7872 | ||
b34976b6 | 7873 | return TRUE; |
65f38f15 AM |
7874 | } |
7875 | ||
7876 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7877 | ||
b34976b6 | 7878 | static bfd_boolean |
4ce794b7 | 7879 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7880 | { |
7881 | struct ppc_link_hash_entry *eh; | |
7882 | struct ppc_dyn_relocs *p; | |
7883 | ||
e92d460e AM |
7884 | if (h->root.type == bfd_link_hash_warning) |
7885 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7886 | ||
65f38f15 AM |
7887 | eh = (struct ppc_link_hash_entry *) h; |
7888 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7889 | { | |
7890 | asection *s = p->sec->output_section; | |
7891 | ||
7892 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7893 | { | |
4ce794b7 | 7894 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7895 | |
7896 | info->flags |= DF_TEXTREL; | |
7897 | ||
7898 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7899 | return FALSE; |
65f38f15 AM |
7900 | } |
7901 | } | |
b34976b6 | 7902 | return TRUE; |
65f38f15 AM |
7903 | } |
7904 | ||
7905 | /* Set the sizes of the dynamic sections. */ | |
7906 | ||
b34976b6 | 7907 | static bfd_boolean |
4ce794b7 AM |
7908 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7909 | struct bfd_link_info *info) | |
65f38f15 AM |
7910 | { |
7911 | struct ppc_link_hash_table *htab; | |
7912 | bfd *dynobj; | |
7913 | asection *s; | |
b34976b6 | 7914 | bfd_boolean relocs; |
65f38f15 AM |
7915 | bfd *ibfd; |
7916 | ||
7917 | htab = ppc_hash_table (info); | |
7918 | dynobj = htab->elf.dynobj; | |
7919 | if (dynobj == NULL) | |
7920 | abort (); | |
7921 | ||
7922 | if (htab->elf.dynamic_sections_created) | |
7923 | { | |
7924 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7925 | if (info->executable) |
65f38f15 AM |
7926 | { |
7927 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7928 | if (s == NULL) | |
7929 | abort (); | |
eea6121a | 7930 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7931 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7932 | } | |
7933 | } | |
7934 | ||
7935 | /* Set up .got offsets for local syms, and space for local dynamic | |
7936 | relocs. */ | |
7937 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7938 | { | |
411e1bfb AM |
7939 | struct got_entry **lgot_ents; |
7940 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7941 | char *lgot_masks; |
65f38f15 AM |
7942 | bfd_size_type locsymcount; |
7943 | Elf_Internal_Shdr *symtab_hdr; | |
7944 | asection *srel; | |
7945 | ||
ee75fd95 | 7946 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7947 | continue; |
7948 | ||
7949 | for (s = ibfd->sections; s != NULL; s = s->next) | |
7950 | { | |
ec338859 | 7951 | struct ppc_dyn_relocs *p; |
65f38f15 | 7952 | |
6edfbbad | 7953 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7954 | { |
ec338859 AM |
7955 | if (!bfd_is_abs_section (p->sec) |
7956 | && bfd_is_abs_section (p->sec->output_section)) | |
7957 | { | |
7958 | /* Input section has been discarded, either because | |
7959 | it is a copy of a linkonce section or due to | |
7960 | linker script /DISCARD/, so we'll be discarding | |
7961 | the relocs too. */ | |
7962 | } | |
248866a8 | 7963 | else if (p->count != 0) |
ec338859 AM |
7964 | { |
7965 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7966 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7967 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7968 | info->flags |= DF_TEXTREL; | |
ec338859 | 7969 | } |
65f38f15 AM |
7970 | } |
7971 | } | |
7972 | ||
411e1bfb AM |
7973 | lgot_ents = elf_local_got_ents (ibfd); |
7974 | if (!lgot_ents) | |
65f38f15 AM |
7975 | continue; |
7976 | ||
7977 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7978 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7979 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7980 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7981 | s = ppc64_elf_tdata (ibfd)->got; |
7982 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7983 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7984 | { |
411e1bfb AM |
7985 | struct got_entry *ent; |
7986 | ||
7987 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7988 | if (ent->got.refcount > 0) | |
7989 | { | |
e7b938ca | 7990 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7991 | { |
102890f0 AM |
7992 | ppc64_tlsld_got (ibfd)->refcount += 1; |
7993 | ent->got.offset = (bfd_vma) -1; | |
411e1bfb AM |
7994 | } |
7995 | else | |
7996 | { | |
eea6121a | 7997 | ent->got.offset = s->size; |
e7b938ca | 7998 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7999 | { |
eea6121a | 8000 | s->size += 16; |
411e1bfb | 8001 | if (info->shared) |
eea6121a | 8002 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
8003 | } |
8004 | else | |
8005 | { | |
eea6121a | 8006 | s->size += 8; |
411e1bfb | 8007 | if (info->shared) |
eea6121a | 8008 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8009 | } |
8010 | } | |
8011 | } | |
8012 | else | |
8013 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
8014 | } |
8015 | } | |
8016 | ||
8017 | /* Allocate global sym .plt and .got entries, and space for global | |
8018 | sym dynamic relocs. */ | |
4ce794b7 | 8019 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8020 | |
102890f0 AM |
8021 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8022 | { | |
8023 | if (!is_ppc64_elf_target (ibfd->xvec)) | |
8024 | continue; | |
8025 | ||
8026 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
8027 | { | |
8028 | s = ppc64_elf_tdata (ibfd)->got; | |
8029 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
8030 | s->size += 16; | |
8031 | if (info->shared) | |
8032 | { | |
8033 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8034 | srel->size += sizeof (Elf64_External_Rela); | |
8035 | } | |
8036 | } | |
8037 | else | |
8038 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
8039 | } | |
8040 | ||
65f38f15 AM |
8041 | /* We now have determined the sizes of the various dynamic sections. |
8042 | Allocate memory for them. */ | |
b34976b6 | 8043 | relocs = FALSE; |
65f38f15 AM |
8044 | for (s = dynobj->sections; s != NULL; s = s->next) |
8045 | { | |
8046 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8047 | continue; | |
8048 | ||
4ce794b7 | 8049 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8050 | /* These haven't been allocated yet; don't strip. */ |
8051 | continue; | |
e717da7e AM |
8052 | else if (s == htab->got |
8053 | || s == htab->plt | |
c456f082 AM |
8054 | || s == htab->glink |
8055 | || s == htab->dynbss) | |
65f38f15 AM |
8056 | { |
8057 | /* Strip this section if we don't need it; see the | |
8058 | comment below. */ | |
5bd4f169 | 8059 | } |
0112cd26 | 8060 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8061 | { |
c456f082 | 8062 | if (s->size != 0) |
5bd4f169 | 8063 | { |
4ce794b7 | 8064 | if (s != htab->relplt) |
b34976b6 | 8065 | relocs = TRUE; |
5bd4f169 AM |
8066 | |
8067 | /* We use the reloc_count field as a counter if we need | |
8068 | to copy relocs into the output file. */ | |
8069 | s->reloc_count = 0; | |
8070 | } | |
8071 | } | |
65f38f15 | 8072 | else |
5bd4f169 AM |
8073 | { |
8074 | /* It's not one of our sections, so don't allocate space. */ | |
8075 | continue; | |
8076 | } | |
8077 | ||
eea6121a | 8078 | if (s->size == 0) |
5bd4f169 | 8079 | { |
c456f082 AM |
8080 | /* If we don't need this section, strip it from the |
8081 | output file. This is mostly to handle .rela.bss and | |
8082 | .rela.plt. We must create both sections in | |
8083 | create_dynamic_sections, because they must be created | |
8084 | before the linker maps input sections to output | |
8085 | sections. The linker does that before | |
8086 | adjust_dynamic_symbol is called, and it is that | |
8087 | function which decides whether anything needs to go | |
8088 | into these sections. */ | |
8423293d | 8089 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8090 | continue; |
8091 | } | |
8092 | ||
c456f082 | 8093 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8094 | continue; |
8095 | ||
65f38f15 AM |
8096 | /* Allocate memory for the section contents. We use bfd_zalloc |
8097 | here in case unused entries are not reclaimed before the | |
8098 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8099 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8100 | sections instead of garbage. | |
8101 | We also rely on the section contents being zero when writing | |
8102 | the GOT. */ | |
eea6121a | 8103 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8104 | if (s->contents == NULL) |
b34976b6 | 8105 | return FALSE; |
5bd4f169 AM |
8106 | } |
8107 | ||
e717da7e AM |
8108 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8109 | { | |
ee75fd95 | 8110 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
8111 | continue; |
8112 | ||
e717da7e AM |
8113 | s = ppc64_elf_tdata (ibfd)->got; |
8114 | if (s != NULL && s != htab->got) | |
8115 | { | |
eea6121a | 8116 | if (s->size == 0) |
8423293d | 8117 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8118 | else |
8119 | { | |
eea6121a | 8120 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8121 | if (s->contents == NULL) |
8122 | return FALSE; | |
8123 | } | |
8124 | } | |
8125 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8126 | if (s != NULL) | |
8127 | { | |
eea6121a | 8128 | if (s->size == 0) |
8423293d | 8129 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8130 | else |
8131 | { | |
eea6121a | 8132 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8133 | if (s->contents == NULL) |
8134 | return FALSE; | |
8135 | relocs = TRUE; | |
8136 | s->reloc_count = 0; | |
8137 | } | |
8138 | } | |
8139 | } | |
8140 | ||
e86ce104 | 8141 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8142 | { |
8143 | /* Add some entries to the .dynamic section. We fill in the | |
8144 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8145 | must add the entries now so that we get the correct size for | |
8146 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8147 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8148 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8149 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8150 | |
36af4a4e | 8151 | if (info->executable) |
5bd4f169 | 8152 | { |
dc810e39 | 8153 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8154 | return FALSE; |
5bd4f169 AM |
8155 | } |
8156 | ||
eea6121a | 8157 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8158 | { |
dc810e39 AM |
8159 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8160 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8161 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8162 | || !add_dynamic_entry (DT_JMPREL, 0) |
8163 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8164 | return FALSE; |
5bd4f169 AM |
8165 | } |
8166 | ||
19397422 AM |
8167 | if (NO_OPD_RELOCS) |
8168 | { | |
8169 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8170 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8171 | return FALSE; |
19397422 AM |
8172 | } |
8173 | ||
5bd4f169 AM |
8174 | if (relocs) |
8175 | { | |
dc810e39 AM |
8176 | if (!add_dynamic_entry (DT_RELA, 0) |
8177 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8178 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8179 | return FALSE; |
5bd4f169 | 8180 | |
65f38f15 AM |
8181 | /* If any dynamic relocs apply to a read-only section, |
8182 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8183 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8184 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8185 | |
65f38f15 | 8186 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8187 | { |
65f38f15 | 8188 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8189 | return FALSE; |
5bd4f169 | 8190 | } |
5bd4f169 | 8191 | } |
5bd4f169 | 8192 | } |
65f38f15 | 8193 | #undef add_dynamic_entry |
5bd4f169 | 8194 | |
b34976b6 | 8195 | return TRUE; |
5bd4f169 AM |
8196 | } |
8197 | ||
721956f4 | 8198 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8199 | |
4ce794b7 AM |
8200 | static inline enum ppc_stub_type |
8201 | ppc_type_of_stub (asection *input_sec, | |
8202 | const Elf_Internal_Rela *rel, | |
8203 | struct ppc_link_hash_entry **hash, | |
8204 | bfd_vma destination) | |
5bd4f169 | 8205 | { |
721956f4 AM |
8206 | struct ppc_link_hash_entry *h = *hash; |
8207 | bfd_vma location; | |
8208 | bfd_vma branch_offset; | |
8209 | bfd_vma max_branch_offset; | |
4ce794b7 | 8210 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8211 | |
721956f4 AM |
8212 | if (h != NULL) |
8213 | { | |
7fe2b9a6 AM |
8214 | struct ppc_link_hash_entry *fdh = h; |
8215 | if (fdh->oh != NULL | |
8216 | && fdh->oh->is_func_descriptor) | |
8217 | fdh = fdh->oh; | |
8387904d | 8218 | |
7fe2b9a6 | 8219 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8220 | { |
411e1bfb | 8221 | struct plt_entry *ent; |
8387904d | 8222 | |
7fe2b9a6 | 8223 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8224 | if (ent->addend == rel->r_addend |
8225 | && ent->plt.offset != (bfd_vma) -1) | |
8226 | { | |
7fe2b9a6 | 8227 | *hash = fdh; |
411e1bfb AM |
8228 | return ppc_stub_plt_call; |
8229 | } | |
5bd4f169 AM |
8230 | } |
8231 | ||
7fe2b9a6 AM |
8232 | /* Here, we know we don't have a plt entry. If we don't have a |
8233 | either a defined function descriptor or a defined entry symbol | |
8234 | in a regular object file, then it is pointless trying to make | |
8235 | any other type of stub. */ | |
8236 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8237 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8238 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8239 | && !((h->elf.root.type == bfd_link_hash_defined | |
8240 | || h->elf.root.type == bfd_link_hash_defweak) | |
8241 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8242 | return ppc_stub_none; |
5d1634d7 | 8243 | } |
5d1634d7 | 8244 | |
721956f4 AM |
8245 | /* Determine where the call point is. */ |
8246 | location = (input_sec->output_offset | |
8247 | + input_sec->output_section->vma | |
8248 | + rel->r_offset); | |
5d1634d7 | 8249 | |
721956f4 AM |
8250 | branch_offset = destination - location; |
8251 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8252 | |
721956f4 AM |
8253 | /* Determine if a long branch stub is needed. */ |
8254 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8255 | if (r_type != R_PPC64_REL24) |
721956f4 | 8256 | max_branch_offset = 1 << 15; |
5d1634d7 | 8257 | |
721956f4 AM |
8258 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8259 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8260 | is needed later. */ | |
8261 | return ppc_stub_long_branch; | |
5d1634d7 | 8262 | |
721956f4 | 8263 | return ppc_stub_none; |
5d1634d7 AM |
8264 | } |
8265 | ||
8266 | /* Build a .plt call stub. */ | |
8267 | ||
4ce794b7 AM |
8268 | static inline bfd_byte * |
8269 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8270 | { |
8271 | #define PPC_LO(v) ((v) & 0xffff) | |
8272 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8273 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8274 | ||
ac2df442 AM |
8275 | if (PPC_HA (offset) != 0) |
8276 | { | |
8277 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
8278 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8279 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8280 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8281 | { | |
8282 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
8283 | offset = 0; | |
8284 | } | |
8285 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8286 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
8287 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
8288 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8289 | } | |
8290 | else | |
8291 | { | |
8292 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8293 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
8294 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8295 | { | |
8296 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
8297 | offset = 0; | |
8298 | } | |
8299 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8300 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
8301 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
8302 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8303 | } | |
5d1634d7 AM |
8304 | return p; |
8305 | } | |
8306 | ||
b34976b6 | 8307 | static bfd_boolean |
4ce794b7 | 8308 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8309 | { |
721956f4 AM |
8310 | struct ppc_stub_hash_entry *stub_entry; |
8311 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8312 | struct bfd_link_info *info; |
8313 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8314 | bfd_byte *loc; |
8315 | bfd_byte *p; | |
8316 | unsigned int indx; | |
411e1bfb | 8317 | struct plt_entry *ent; |
ee75fd95 | 8318 | bfd_vma dest, off; |
721956f4 | 8319 | int size; |
5d1634d7 | 8320 | |
721956f4 AM |
8321 | /* Massage our args to the form they really have. */ |
8322 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8323 | info = in_arg; |
5d1634d7 | 8324 | |
5d1634d7 AM |
8325 | htab = ppc_hash_table (info); |
8326 | ||
721956f4 | 8327 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8328 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8329 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8330 | |
4ce794b7 | 8331 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8332 | switch (stub_entry->stub_type) |
5d1634d7 | 8333 | { |
721956f4 | 8334 | case ppc_stub_long_branch: |
ad8e1ba5 | 8335 | case ppc_stub_long_branch_r2off: |
721956f4 | 8336 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8337 | off = dest = (stub_entry->target_value |
8338 | + stub_entry->target_section->output_offset | |
8339 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8340 | |
721956f4 AM |
8341 | /* And this is where we are coming from. */ |
8342 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8343 | + stub_entry->stub_sec->output_offset |
8344 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8345 | |
ac2df442 AM |
8346 | size = 4; |
8347 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
8348 | { |
8349 | bfd_vma r2off; | |
8350 | ||
8351 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8352 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8353 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8354 | loc += 4; |
ac2df442 AM |
8355 | size = 12; |
8356 | if (PPC_HA (r2off) != 0) | |
8357 | { | |
8358 | size = 16; | |
8359 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8360 | loc += 4; | |
8361 | } | |
97b639ba | 8362 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 8363 | loc += 4; |
ac2df442 | 8364 | off -= size - 4; |
ad8e1ba5 | 8365 | } |
97b639ba | 8366 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8367 | |
5c3dead3 AM |
8368 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8369 | { | |
8370 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8371 | stub_entry->root.string); | |
8372 | htab->stub_error = TRUE; | |
8373 | return FALSE; | |
8374 | } | |
ee75fd95 AM |
8375 | |
8376 | if (info->emitrelocations) | |
8377 | { | |
8378 | Elf_Internal_Rela *relocs, *r; | |
8379 | struct bfd_elf_section_data *elfsec_data; | |
8380 | ||
8381 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8382 | relocs = elfsec_data->relocs; | |
8383 | if (relocs == NULL) | |
8384 | { | |
8385 | bfd_size_type relsize; | |
8386 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8387 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8388 | if (relocs == NULL) | |
8389 | return FALSE; | |
8390 | elfsec_data->relocs = relocs; | |
2e5b2d74 AM |
8391 | elfsec_data->rel_hdr.sh_size = (stub_entry->stub_sec->reloc_count |
8392 | * sizeof (Elf64_External_Rela)); | |
8393 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
ee75fd95 AM |
8394 | stub_entry->stub_sec->reloc_count = 0; |
8395 | } | |
8396 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8397 | stub_entry->stub_sec->reloc_count += 1; | |
8398 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8399 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8400 | r->r_addend = dest; | |
8401 | if (stub_entry->h != NULL) | |
8402 | { | |
8403 | struct elf_link_hash_entry **hashes; | |
8404 | unsigned long symndx; | |
8405 | struct ppc_link_hash_entry *h; | |
8406 | ||
8407 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8408 | if (hashes == NULL) | |
8409 | { | |
8410 | bfd_size_type hsize; | |
8411 | ||
8412 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8413 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8414 | if (hashes == NULL) | |
8415 | return FALSE; | |
8416 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8417 | htab->stub_globals = 1; | |
8418 | } | |
8419 | symndx = htab->stub_globals++; | |
8420 | h = stub_entry->h; | |
8421 | hashes[symndx] = &h->elf; | |
8422 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8423 | if (h->oh != NULL && h->oh->is_func) | |
8424 | h = h->oh; | |
8425 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8426 | /* H is an opd symbol. The addend must be zero. */ | |
8427 | r->r_addend = 0; | |
8428 | else | |
8429 | { | |
8430 | off = (h->elf.root.u.def.value | |
8431 | + h->elf.root.u.def.section->output_offset | |
8432 | + h->elf.root.u.def.section->output_section->vma); | |
8433 | r->r_addend -= off; | |
8434 | } | |
8435 | } | |
8436 | } | |
721956f4 | 8437 | break; |
e86ce104 | 8438 | |
721956f4 | 8439 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8440 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8441 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8442 | stub_entry->root.string + 9, | |
b34976b6 | 8443 | FALSE, FALSE); |
721956f4 AM |
8444 | if (br_entry == NULL) |
8445 | { | |
8446 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8447 | stub_entry->root.string); |
b34976b6 AM |
8448 | htab->stub_error = TRUE; |
8449 | return FALSE; | |
721956f4 AM |
8450 | } |
8451 | ||
8452 | off = (stub_entry->target_value | |
8453 | + stub_entry->target_section->output_offset | |
8454 | + stub_entry->target_section->output_section->vma); | |
8455 | ||
4ce794b7 AM |
8456 | bfd_put_64 (htab->brlt->owner, off, |
8457 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8458 | |
f94498ff | 8459 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 8460 | { |
f94498ff | 8461 | br_entry->iter = 0; |
84f5d08e | 8462 | |
f94498ff | 8463 | if (htab->relbrlt != NULL) |
84f5d08e | 8464 | { |
f94498ff AM |
8465 | /* Create a reloc for the branch lookup table entry. */ |
8466 | Elf_Internal_Rela rela; | |
8467 | bfd_byte *rl; | |
8468 | ||
8469 | rela.r_offset = (br_entry->offset | |
8470 | + htab->brlt->output_offset | |
8471 | + htab->brlt->output_section->vma); | |
8472 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
8473 | rela.r_addend = off; | |
8474 | ||
8475 | rl = htab->relbrlt->contents; | |
8476 | rl += (htab->relbrlt->reloc_count++ | |
8477 | * sizeof (Elf64_External_Rela)); | |
8478 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
8479 | } | |
8480 | else if (info->emitrelocations) | |
8481 | { | |
8482 | Elf_Internal_Rela *relocs, *r; | |
8483 | struct bfd_elf_section_data *elfsec_data; | |
8484 | ||
8485 | elfsec_data = elf_section_data (htab->brlt); | |
8486 | relocs = elfsec_data->relocs; | |
84f5d08e | 8487 | if (relocs == NULL) |
f94498ff AM |
8488 | { |
8489 | bfd_size_type relsize; | |
8490 | relsize = htab->brlt->reloc_count * sizeof (*relocs); | |
8491 | relocs = bfd_alloc (htab->brlt->owner, relsize); | |
8492 | if (relocs == NULL) | |
8493 | return FALSE; | |
8494 | elfsec_data->relocs = relocs; | |
8495 | elfsec_data->rel_hdr.sh_size | |
8496 | = (stub_entry->stub_sec->reloc_count | |
8497 | * sizeof (Elf64_External_Rela)); | |
8498 | elfsec_data->rel_hdr.sh_entsize | |
8499 | = sizeof (Elf64_External_Rela); | |
8500 | htab->brlt->reloc_count = 0; | |
8501 | } | |
8502 | r = relocs + htab->brlt->reloc_count; | |
8503 | htab->brlt->reloc_count += 1; | |
8504 | r->r_offset = (br_entry->offset | |
8505 | + htab->brlt->output_offset | |
8506 | + htab->brlt->output_section->vma); | |
8507 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
8508 | r->r_addend = off; | |
84f5d08e | 8509 | } |
84f5d08e | 8510 | } |
721956f4 AM |
8511 | |
8512 | off = (br_entry->offset | |
4ce794b7 AM |
8513 | + htab->brlt->output_offset |
8514 | + htab->brlt->output_section->vma | |
8515 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8516 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8517 | |
ad8e1ba5 | 8518 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8519 | { |
8520 | (*_bfd_error_handler) | |
e86ce104 | 8521 | (_("linkage table error against `%s'"), |
721956f4 | 8522 | stub_entry->root.string); |
5d1634d7 | 8523 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8524 | htab->stub_error = TRUE; |
8525 | return FALSE; | |
5d1634d7 | 8526 | } |
41bd81ab | 8527 | |
721956f4 | 8528 | indx = off; |
ad8e1ba5 AM |
8529 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8530 | { | |
ac2df442 AM |
8531 | if (PPC_HA (indx) != 0) |
8532 | { | |
8533 | size = 16; | |
8534 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); | |
8535 | loc += 4; | |
8536 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); | |
8537 | } | |
8538 | else | |
8539 | { | |
8540 | size = 12; | |
8541 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc); | |
8542 | } | |
ad8e1ba5 AM |
8543 | } |
8544 | else | |
8545 | { | |
8546 | bfd_vma r2off; | |
8547 | ||
8548 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8549 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8550 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8551 | loc += 4; |
ac2df442 AM |
8552 | size = 20; |
8553 | if (PPC_HA (indx) != 0) | |
8554 | { | |
8555 | size += 4; | |
8556 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); | |
8557 | loc += 4; | |
8558 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); | |
8559 | loc += 4; | |
8560 | } | |
8561 | else | |
8562 | { | |
8563 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc); | |
8564 | loc += 4; | |
8565 | } | |
8566 | ||
8567 | if (PPC_HA (r2off) != 0) | |
8568 | { | |
8569 | size += 4; | |
8570 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8571 | loc += 4; | |
8572 | } | |
97b639ba | 8573 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8574 | } |
8575 | loc += 4; | |
97b639ba | 8576 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8577 | loc += 4; |
97b639ba | 8578 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8579 | break; |
5d1634d7 | 8580 | |
721956f4 | 8581 | case ppc_stub_plt_call: |
c862ae31 AM |
8582 | /* Do the best we can for shared libraries built without |
8583 | exporting ".foo" for each "foo". This can happen when symbol | |
8584 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8585 | if (stub_entry->h->oh != NULL |
8586 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8587 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8588 | { |
8589 | /* Point the symbol at the stub. There may be multiple stubs, | |
8590 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8591 | defined somewhere. Maybe defining the symbol in the stub |
8592 | section is a silly idea. If we didn't do this, htab->top_id | |
8593 | could disappear. */ | |
34814b9f AM |
8594 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8595 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8596 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8597 | } |
8598 | ||
721956f4 | 8599 | /* Now build the stub. */ |
411e1bfb AM |
8600 | off = (bfd_vma) -1; |
8601 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8602 | if (ent->addend == stub_entry->addend) | |
8603 | { | |
8604 | off = ent->plt.offset; | |
8605 | break; | |
8606 | } | |
721956f4 AM |
8607 | if (off >= (bfd_vma) -2) |
8608 | abort (); | |
8609 | ||
8610 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8611 | off += (htab->plt->output_offset |
8612 | + htab->plt->output_section->vma | |
8613 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8614 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8615 | |
ad8e1ba5 | 8616 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8617 | { |
8618 | (*_bfd_error_handler) | |
8619 | (_("linkage table error against `%s'"), | |
8620 | stub_entry->h->elf.root.root.string); | |
8621 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8622 | htab->stub_error = TRUE; |
8623 | return FALSE; | |
721956f4 AM |
8624 | } |
8625 | ||
97b639ba | 8626 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8627 | size = p - loc; |
8628 | break; | |
8629 | ||
8630 | default: | |
8631 | BFD_FAIL (); | |
b34976b6 | 8632 | return FALSE; |
721956f4 AM |
8633 | } |
8634 | ||
eea6121a | 8635 | stub_entry->stub_sec->size += size; |
97b639ba | 8636 | |
ee75fd95 | 8637 | if (htab->emit_stub_syms) |
97b639ba AM |
8638 | { |
8639 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8640 | size_t len1, len2; |
8641 | char *name; | |
8642 | const char *const stub_str[] = { "long_branch", | |
8643 | "long_branch_r2off", | |
8644 | "plt_branch", | |
8645 | "plt_branch_r2off", | |
8646 | "plt_call" }; | |
8647 | ||
8648 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8649 | len2 = strlen (stub_entry->root.string); | |
8650 | name = bfd_malloc (len1 + len2 + 2); | |
8651 | if (name == NULL) | |
8652 | return FALSE; | |
8653 | memcpy (name, stub_entry->root.string, 9); | |
8654 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8655 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8656 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8657 | if (h == NULL) |
8658 | return FALSE; | |
8659 | if (h->root.type == bfd_link_hash_new) | |
8660 | { | |
8661 | h->root.type = bfd_link_hash_defined; | |
8662 | h->root.u.def.section = stub_entry->stub_sec; | |
8663 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8664 | h->ref_regular = 1; |
8665 | h->def_regular = 1; | |
8666 | h->ref_regular_nonweak = 1; | |
8667 | h->forced_local = 1; | |
8668 | h->non_elf = 0; | |
97b639ba AM |
8669 | } |
8670 | } | |
8671 | ||
b34976b6 | 8672 | return TRUE; |
721956f4 AM |
8673 | } |
8674 | ||
8675 | /* As above, but don't actually build the stub. Just bump offset so | |
8676 | we know stub section sizes, and select plt_branch stubs where | |
8677 | long_branch stubs won't do. */ | |
8678 | ||
b34976b6 | 8679 | static bfd_boolean |
4ce794b7 | 8680 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8681 | { |
8682 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8683 | struct bfd_link_info *info; |
721956f4 AM |
8684 | struct ppc_link_hash_table *htab; |
8685 | bfd_vma off; | |
8686 | int size; | |
8687 | ||
8688 | /* Massage our args to the form they really have. */ | |
8689 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8690 | info = in_arg; |
8691 | ||
8692 | htab = ppc_hash_table (info); | |
721956f4 AM |
8693 | |
8694 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8695 | { | |
411e1bfb | 8696 | struct plt_entry *ent; |
58ac9f71 | 8697 | off = (bfd_vma) -1; |
411e1bfb AM |
8698 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8699 | if (ent->addend == stub_entry->addend) | |
8700 | { | |
8701 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8702 | break; | |
8703 | } | |
58ac9f71 | 8704 | if (off >= (bfd_vma) -2) |
411e1bfb | 8705 | abort (); |
4ce794b7 AM |
8706 | off += (htab->plt->output_offset |
8707 | + htab->plt->output_section->vma | |
8708 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8709 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8710 | |
ad8e1ba5 | 8711 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
8712 | if (PPC_HA (off) == 0) |
8713 | size -= 4; | |
4ce794b7 | 8714 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8715 | size += 4; |
8716 | } | |
8717 | else | |
8718 | { | |
ad8e1ba5 AM |
8719 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8720 | variants. */ | |
ac2df442 AM |
8721 | bfd_vma r2off = 0; |
8722 | ||
721956f4 AM |
8723 | off = (stub_entry->target_value |
8724 | + stub_entry->target_section->output_offset | |
8725 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8726 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8727 | + stub_entry->stub_sec->output_offset |
8728 | + stub_entry->stub_sec->output_section->vma); | |
8729 | ||
ad8e1ba5 AM |
8730 | /* Reset the stub type from the plt variant in case we now |
8731 | can reach with a shorter stub. */ | |
8732 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8733 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8734 | ||
8735 | size = 4; | |
8736 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8737 | { | |
ac2df442 AM |
8738 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
8739 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
8740 | size = 12; | |
8741 | if (PPC_HA (r2off) != 0) | |
8742 | size = 16; | |
8743 | off -= size - 4; | |
ad8e1ba5 AM |
8744 | } |
8745 | ||
8746 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8747 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8748 | { | |
8749 | struct ppc_branch_hash_entry *br_entry; | |
ac2df442 | 8750 | unsigned int indx; |
721956f4 AM |
8751 | |
8752 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8753 | stub_entry->root.string + 9, | |
b34976b6 | 8754 | TRUE, FALSE); |
721956f4 AM |
8755 | if (br_entry == NULL) |
8756 | { | |
8757 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8758 | stub_entry->root.string); |
b34976b6 AM |
8759 | htab->stub_error = TRUE; |
8760 | return FALSE; | |
721956f4 AM |
8761 | } |
8762 | ||
8763 | if (br_entry->iter != htab->stub_iteration) | |
8764 | { | |
8765 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8766 | br_entry->offset = htab->brlt->size; |
8767 | htab->brlt->size += 8; | |
63bc6f6c | 8768 | |
ee75fd95 | 8769 | if (htab->relbrlt != NULL) |
eea6121a | 8770 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
8771 | else if (info->emitrelocations) |
8772 | { | |
8773 | htab->brlt->reloc_count += 1; | |
8774 | htab->brlt->flags |= SEC_RELOC; | |
8775 | } | |
721956f4 | 8776 | } |
ad8e1ba5 AM |
8777 | |
8778 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
8779 | off = (br_entry->offset |
8780 | + htab->brlt->output_offset | |
8781 | + htab->brlt->output_section->vma | |
8782 | - elf_gp (htab->brlt->output_section->owner) | |
8783 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
8784 | ||
8785 | indx = off; | |
8786 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
8787 | { | |
8788 | size = 12; | |
8789 | if (PPC_HA (indx) != 0) | |
8790 | size = 16; | |
8791 | } | |
8792 | else | |
8793 | { | |
8794 | size = 20; | |
8795 | if (PPC_HA (indx) != 0) | |
8796 | size += 4; | |
8797 | ||
8798 | if (PPC_HA (r2off) != 0) | |
8799 | size += 4; | |
8800 | } | |
721956f4 | 8801 | } |
84f5d08e AM |
8802 | else if (info->emitrelocations) |
8803 | { | |
8804 | stub_entry->stub_sec->reloc_count += 1; | |
8805 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
8806 | } | |
721956f4 AM |
8807 | } |
8808 | ||
eea6121a | 8809 | stub_entry->stub_sec->size += size; |
b34976b6 | 8810 | return TRUE; |
721956f4 AM |
8811 | } |
8812 | ||
8813 | /* Set up various things so that we can make a list of input sections | |
8814 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8815 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8816 | |
8817 | int | |
4c52953f AM |
8818 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8819 | struct bfd_link_info *info, | |
8820 | int no_multi_toc) | |
721956f4 AM |
8821 | { |
8822 | bfd *input_bfd; | |
734b6cf9 | 8823 | int top_id, top_index, id; |
721956f4 | 8824 | asection *section; |
734b6cf9 | 8825 | asection **input_list; |
721956f4 AM |
8826 | bfd_size_type amt; |
8827 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8828 | ||
4c52953f AM |
8829 | htab->no_multi_toc = no_multi_toc; |
8830 | ||
4ce794b7 | 8831 | if (htab->brlt == NULL) |
721956f4 AM |
8832 | return 0; |
8833 | ||
1e2f5b6e | 8834 | /* Find the top input section id. */ |
3d6f9012 | 8835 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8836 | input_bfd != NULL; |
8837 | input_bfd = input_bfd->link_next) | |
8838 | { | |
721956f4 AM |
8839 | for (section = input_bfd->sections; |
8840 | section != NULL; | |
8841 | section = section->next) | |
8842 | { | |
8843 | if (top_id < section->id) | |
8844 | top_id = section->id; | |
8845 | } | |
8846 | } | |
721956f4 | 8847 | |
8f3bab57 | 8848 | htab->top_id = top_id; |
721956f4 | 8849 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8850 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8851 | if (htab->stub_group == NULL) |
8852 | return -1; | |
8853 | ||
3d6f9012 AM |
8854 | /* Set toc_off for com, und, abs and ind sections. */ |
8855 | for (id = 0; id < 3; id++) | |
8856 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8857 | |
3d6f9012 | 8858 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8859 | |
8860 | /* We can't use output_bfd->section_count here to find the top output | |
8861 | section index as some sections may have been removed, and | |
8423293d | 8862 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8863 | for (section = output_bfd->sections, top_index = 0; |
8864 | section != NULL; | |
8865 | section = section->next) | |
8866 | { | |
8867 | if (top_index < section->index) | |
8868 | top_index = section->index; | |
8869 | } | |
8870 | ||
8871 | htab->top_index = top_index; | |
8872 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8873 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8874 | htab->input_list = input_list; |
8875 | if (input_list == NULL) | |
8876 | return -1; | |
8877 | ||
721956f4 AM |
8878 | return 1; |
8879 | } | |
8880 | ||
e717da7e AM |
8881 | /* The linker repeatedly calls this function for each TOC input section |
8882 | and linker generated GOT section. Group input bfds such that the toc | |
8883 | within a group is less than 64k in size. Will break with cute linker | |
8884 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8885 | |
8886 | void | |
4ce794b7 | 8887 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8888 | { |
8889 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8890 | ||
4c52953f AM |
8891 | if (!htab->no_multi_toc) |
8892 | { | |
8893 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8894 | bfd_vma off = addr - htab->toc_curr; | |
8895 | ||
8896 | if (off + isec->size > 0x10000) | |
8897 | htab->toc_curr = addr; | |
99877b66 | 8898 | |
4c52953f AM |
8899 | elf_gp (isec->owner) = (htab->toc_curr |
8900 | - elf_gp (isec->output_section->owner) | |
8901 | + TOC_BASE_OFF); | |
8902 | } | |
ad8e1ba5 AM |
8903 | } |
8904 | ||
8905 | /* Called after the last call to the above function. */ | |
8906 | ||
8907 | void | |
4c52953f | 8908 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8909 | { |
8910 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8911 | |
4c52953f AM |
8912 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8913 | ||
ad8e1ba5 AM |
8914 | /* toc_curr tracks the TOC offset used for code sections below in |
8915 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8916 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8917 | } |
8918 | ||
9b5ecbd0 AM |
8919 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8920 | calls, then there's no need to use toc adjusting stubs when branching | |
8921 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8922 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8923 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8924 | for a stub was detected. If called from the top level, a return of | |
8925 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8926 | |
8927 | static int | |
4ce794b7 | 8928 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8929 | { |
4c52953f AM |
8930 | Elf_Internal_Rela *relstart, *rel; |
8931 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8932 | int ret; |
4c52953f | 8933 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8934 | |
772119ce AM |
8935 | /* We know none of our code bearing sections will need toc stubs. */ |
8936 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8937 | return 0; | |
8938 | ||
eea6121a | 8939 | if (isec->size == 0) |
082c50f8 AM |
8940 | return 0; |
8941 | ||
4c52953f AM |
8942 | if (isec->output_section == NULL) |
8943 | return 0; | |
8944 | ||
4c52953f AM |
8945 | if (isec->reloc_count == 0) |
8946 | return 0; | |
8947 | ||
8948 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8949 | info->keep_memory); | |
8950 | if (relstart == NULL) | |
8951 | return -1; | |
8952 | ||
8953 | /* Look for branches to outside of this section. */ | |
8954 | local_syms = NULL; | |
8955 | ret = 0; | |
8956 | htab = ppc_hash_table (info); | |
8957 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8958 | { |
4c52953f AM |
8959 | enum elf_ppc64_reloc_type r_type; |
8960 | unsigned long r_symndx; | |
8961 | struct elf_link_hash_entry *h; | |
8962 | Elf_Internal_Sym *sym; | |
8963 | asection *sym_sec; | |
8964 | long *opd_adjust; | |
8965 | bfd_vma sym_value; | |
8966 | bfd_vma dest; | |
8967 | ||
8968 | r_type = ELF64_R_TYPE (rel->r_info); | |
8969 | if (r_type != R_PPC64_REL24 | |
8970 | && r_type != R_PPC64_REL14 | |
8971 | && r_type != R_PPC64_REL14_BRTAKEN | |
8972 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8973 | continue; | |
8974 | ||
8975 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8976 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8977 | isec->owner)) | |
9b5ecbd0 | 8978 | { |
4c52953f AM |
8979 | ret = -1; |
8980 | break; | |
9b5ecbd0 | 8981 | } |
9b5ecbd0 | 8982 | |
2917689a AM |
8983 | /* Calls to dynamic lib functions go through a plt call stub |
8984 | that uses r2. Branches to undefined symbols might be a call | |
8985 | using old-style dot symbols that can be satisfied by a plt | |
8986 | call into a new-style dynamic library. */ | |
4c52953f | 8987 | if (sym_sec == NULL) |
2917689a AM |
8988 | { |
8989 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8990 | if (eh != NULL | |
8991 | && eh->oh != NULL | |
8992 | && eh->oh->elf.plt.plist != NULL) | |
8993 | { | |
8994 | ret = 1; | |
8995 | break; | |
8996 | } | |
4c52953f | 8997 | |
2917689a AM |
8998 | /* Ignore other undefined symbols. */ |
8999 | continue; | |
9000 | } | |
9001 | ||
9002 | /* Assume branches to other sections not included in the link need | |
9003 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
9004 | if (sym_sec->output_section == NULL) |
9005 | { | |
9006 | ret = 1; | |
9007 | break; | |
9008 | } | |
9009 | ||
9010 | if (h == NULL) | |
9011 | sym_value = sym->st_value; | |
9012 | else | |
9013 | { | |
9014 | if (h->root.type != bfd_link_hash_defined | |
9015 | && h->root.type != bfd_link_hash_defweak) | |
9016 | abort (); | |
9017 | sym_value = h->root.u.def.value; | |
9018 | } | |
9019 | sym_value += rel->r_addend; | |
9020 | ||
9021 | /* If this branch reloc uses an opd sym, find the code section. */ | |
9022 | opd_adjust = get_opd_info (sym_sec); | |
9023 | if (opd_adjust != NULL) | |
9024 | { | |
4c52953f AM |
9025 | if (h == NULL) |
9026 | { | |
9027 | long adjust; | |
9028 | ||
9029 | adjust = opd_adjust[sym->st_value / 8]; | |
9030 | if (adjust == -1) | |
9031 | /* Assume deleted functions won't ever be called. */ | |
9032 | continue; | |
9033 | sym_value += adjust; | |
9034 | } | |
9035 | ||
9036 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
9037 | if (dest == (bfd_vma) -1) | |
9038 | continue; | |
9039 | } | |
9040 | else | |
9041 | dest = (sym_value | |
9042 | + sym_sec->output_offset | |
9043 | + sym_sec->output_section->vma); | |
9044 | ||
9045 | /* Ignore branch to self. */ | |
9046 | if (sym_sec == isec) | |
9047 | continue; | |
9048 | ||
9049 | /* If the called function uses the toc, we need a stub. */ | |
9050 | if (sym_sec->has_toc_reloc | |
9051 | || sym_sec->makes_toc_func_call) | |
9052 | { | |
9053 | ret = 1; | |
9054 | break; | |
9055 | } | |
9056 | ||
9057 | /* Assume any branch that needs a long branch stub might in fact | |
9058 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
9059 | else if (dest - (isec->output_offset | |
9060 | + isec->output_section->vma | |
9061 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
9062 | { |
9063 | ret = 1; | |
9064 | break; | |
9065 | } | |
4c52953f AM |
9066 | |
9067 | /* If calling back to a section in the process of being tested, we | |
9068 | can't say for sure that no toc adjusting stubs are needed, so | |
9069 | don't return zero. */ | |
9070 | else if (sym_sec->call_check_in_progress) | |
9071 | ret = 2; | |
9072 | ||
9073 | /* Branches to another section that itself doesn't have any TOC | |
9074 | references are OK. Recursively call ourselves to check. */ | |
9075 | else if (sym_sec->id <= htab->top_id | |
9076 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
9077 | { | |
9078 | int recur; | |
9079 | ||
9080 | /* Mark current section as indeterminate, so that other | |
9081 | sections that call back to current won't be marked as | |
9082 | known. */ | |
9083 | isec->call_check_in_progress = 1; | |
9084 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
9085 | isec->call_check_in_progress = 0; | |
9086 | ||
9087 | if (recur < 0) | |
9088 | { | |
9089 | /* An error. Exit. */ | |
9090 | ret = -1; | |
9091 | break; | |
9092 | } | |
9093 | else if (recur <= 1) | |
9094 | { | |
9095 | /* Known result. Mark as checked and set section flag. */ | |
9096 | htab->stub_group[sym_sec->id].toc_off = 1; | |
9097 | if (recur != 0) | |
9098 | { | |
9099 | sym_sec->makes_toc_func_call = 1; | |
9100 | ret = 1; | |
9101 | break; | |
9102 | } | |
9103 | } | |
9104 | else | |
9105 | { | |
9106 | /* Unknown result. Continue checking. */ | |
9107 | ret = 2; | |
9108 | } | |
9109 | } | |
9b5ecbd0 AM |
9110 | } |
9111 | ||
4c52953f AM |
9112 | if (local_syms != NULL |
9113 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
9114 | != (unsigned char *) local_syms)) | |
9115 | free (local_syms); | |
9116 | if (elf_section_data (isec)->relocs != relstart) | |
9117 | free (relstart); | |
9118 | ||
9b5ecbd0 AM |
9119 | return ret; |
9120 | } | |
9121 | ||
721956f4 AM |
9122 | /* The linker repeatedly calls this function for each input section, |
9123 | in the order that input sections are linked into output sections. | |
9124 | Build lists of input sections to determine groupings between which | |
9125 | we may insert linker stubs. */ | |
9126 | ||
9b5ecbd0 | 9127 | bfd_boolean |
4ce794b7 | 9128 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
9129 | { |
9130 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9131 | ||
734b6cf9 AM |
9132 | if ((isec->output_section->flags & SEC_CODE) != 0 |
9133 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 9134 | { |
734b6cf9 | 9135 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 9136 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 9137 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
9138 | /* This happens to make the list in reverse order, |
9139 | which is what we want. */ | |
734b6cf9 AM |
9140 | PREV_SEC (isec) = *list; |
9141 | *list = isec; | |
721956f4 | 9142 | } |
ad8e1ba5 | 9143 | |
4c52953f | 9144 | if (htab->multi_toc_needed) |
9b5ecbd0 | 9145 | { |
4c52953f AM |
9146 | /* If a code section has a function that uses the TOC then we need |
9147 | to use the right TOC (obviously). Also, make sure that .opd gets | |
9148 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
9149 | can't find their function symbol (shouldn't ever happen now). |
9150 | Also specially treat .fixup for the linux kernel. .fixup | |
9151 | contains branches, but only back to the function that hit an | |
9152 | exception. */ | |
9153 | if (isec->has_toc_reloc | |
9154 | || (isec->flags & SEC_CODE) == 0 | |
9155 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
9156 | { |
9157 | if (elf_gp (isec->owner) != 0) | |
9158 | htab->toc_curr = elf_gp (isec->owner); | |
9159 | } | |
9160 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9161 | { | |
9162 | int ret = toc_adjusting_stub_needed (info, isec); | |
9163 | if (ret < 0) | |
9164 | return FALSE; | |
9165 | else | |
9166 | isec->makes_toc_func_call = ret & 1; | |
9167 | } | |
9b5ecbd0 | 9168 | } |
ad8e1ba5 AM |
9169 | |
9170 | /* Functions that don't use the TOC can belong in any TOC group. | |
9171 | Use the last TOC base. This happens to make _init and _fini | |
9172 | pasting work. */ | |
9173 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9174 | return TRUE; |
721956f4 AM |
9175 | } |
9176 | ||
9177 | /* See whether we can group stub sections together. Grouping stub | |
9178 | sections may result in fewer stubs. More importantly, we need to | |
9179 | put all .init* and .fini* stubs at the beginning of the .init or | |
9180 | .fini output sections respectively, because glibc splits the | |
9181 | _init and _fini functions into multiple parts. Putting a stub in | |
9182 | the middle of a function is not a good idea. */ | |
9183 | ||
9184 | static void | |
4ce794b7 AM |
9185 | group_sections (struct ppc_link_hash_table *htab, |
9186 | bfd_size_type stub_group_size, | |
9187 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9188 | { |
7c8fe5c4 AM |
9189 | asection **list; |
9190 | bfd_size_type stub14_group_size; | |
9191 | bfd_boolean suppress_size_errors; | |
9192 | ||
9193 | suppress_size_errors = FALSE; | |
9194 | stub14_group_size = stub_group_size; | |
9195 | if (stub_group_size == 1) | |
9196 | { | |
9197 | /* Default values. */ | |
9198 | if (stubs_always_before_branch) | |
9199 | { | |
9200 | stub_group_size = 0x1e00000; | |
9201 | stub14_group_size = 0x7800; | |
9202 | } | |
9203 | else | |
9204 | { | |
9205 | stub_group_size = 0x1c00000; | |
9206 | stub14_group_size = 0x7000; | |
9207 | } | |
9208 | suppress_size_errors = TRUE; | |
9209 | } | |
9210 | ||
9211 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9212 | do |
721956f4 | 9213 | { |
734b6cf9 AM |
9214 | asection *tail = *list; |
9215 | while (tail != NULL) | |
721956f4 | 9216 | { |
734b6cf9 AM |
9217 | asection *curr; |
9218 | asection *prev; | |
9219 | bfd_size_type total; | |
9220 | bfd_boolean big_sec; | |
9221 | bfd_vma curr_toc; | |
9222 | ||
9223 | curr = tail; | |
eea6121a | 9224 | total = tail->size; |
7c8fe5c4 AM |
9225 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9226 | ? stub14_group_size : stub_group_size); | |
9227 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9228 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9229 | tail->owner, tail); | |
734b6cf9 AM |
9230 | curr_toc = htab->stub_group[tail->id].toc_off; |
9231 | ||
9232 | while ((prev = PREV_SEC (curr)) != NULL | |
9233 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9234 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9235 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9236 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9237 | curr = prev; |
9238 | ||
9239 | /* OK, the size from the start of CURR to the end is less | |
9240 | than stub_group_size and thus can be handled by one stub | |
9241 | section. (or the tail section is itself larger than | |
9242 | stub_group_size, in which case we may be toast.) We | |
9243 | should really be keeping track of the total size of stubs | |
9244 | added here, as stubs contribute to the final output | |
9245 | section size. That's a little tricky, and this way will | |
9246 | only break if stubs added make the total size more than | |
9247 | 2^25, ie. for the default stub_group_size, if stubs total | |
9248 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9249 | do | |
721956f4 AM |
9250 | { |
9251 | prev = PREV_SEC (tail); | |
734b6cf9 | 9252 | /* Set up this stub group. */ |
721956f4 AM |
9253 | htab->stub_group[tail->id].link_sec = curr; |
9254 | } | |
734b6cf9 AM |
9255 | while (tail != curr && (tail = prev) != NULL); |
9256 | ||
9257 | /* But wait, there's more! Input sections up to stub_group_size | |
9258 | bytes before the stub section can be handled by it too. | |
9259 | Don't do this if we have a really large section after the | |
9260 | stubs, as adding more stubs increases the chance that | |
9261 | branches may not reach into the stub section. */ | |
9262 | if (!stubs_always_before_branch && !big_sec) | |
9263 | { | |
9264 | total = 0; | |
9265 | while (prev != NULL | |
9266 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9267 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9268 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9269 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9270 | { | |
9271 | tail = prev; | |
9272 | prev = PREV_SEC (tail); | |
9273 | htab->stub_group[tail->id].link_sec = curr; | |
9274 | } | |
9275 | } | |
9276 | tail = prev; | |
721956f4 AM |
9277 | } |
9278 | } | |
734b6cf9 AM |
9279 | while (list-- != htab->input_list); |
9280 | free (htab->input_list); | |
721956f4 AM |
9281 | #undef PREV_SEC |
9282 | } | |
9283 | ||
721956f4 AM |
9284 | /* Determine and set the size of the stub section for a final link. |
9285 | ||
9286 | The basic idea here is to examine all the relocations looking for | |
9287 | PC-relative calls to a target that is unreachable with a "bl" | |
9288 | instruction. */ | |
9289 | ||
b34976b6 | 9290 | bfd_boolean |
4ce794b7 | 9291 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9292 | struct bfd_link_info *info, |
9293 | bfd_signed_vma group_size, | |
9294 | asection *(*add_stub_section) (const char *, asection *), | |
9295 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9296 | { |
9297 | bfd_size_type stub_group_size; | |
b34976b6 | 9298 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9299 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9300 | ||
9301 | /* Stash our params away. */ | |
721956f4 AM |
9302 | htab->add_stub_section = add_stub_section; |
9303 | htab->layout_sections_again = layout_sections_again; | |
9304 | stubs_always_before_branch = group_size < 0; | |
9305 | if (group_size < 0) | |
9306 | stub_group_size = -group_size; | |
9307 | else | |
9308 | stub_group_size = group_size; | |
721956f4 AM |
9309 | |
9310 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9311 | ||
721956f4 AM |
9312 | while (1) |
9313 | { | |
9314 | bfd *input_bfd; | |
9315 | unsigned int bfd_indx; | |
9316 | asection *stub_sec; | |
721956f4 AM |
9317 | |
9318 | htab->stub_iteration += 1; | |
721956f4 AM |
9319 | |
9320 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9321 | input_bfd != NULL; | |
9322 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9323 | { | |
9324 | Elf_Internal_Shdr *symtab_hdr; | |
9325 | asection *section; | |
6cdc0ccc | 9326 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9327 | |
67f93c31 AM |
9328 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9329 | continue; | |
9330 | ||
721956f4 AM |
9331 | /* We'll need the symbol table in a second. */ |
9332 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
9333 | if (symtab_hdr->sh_info == 0) | |
9334 | continue; | |
9335 | ||
721956f4 AM |
9336 | /* Walk over each section attached to the input bfd. */ |
9337 | for (section = input_bfd->sections; | |
9338 | section != NULL; | |
9339 | section = section->next) | |
9340 | { | |
721956f4 | 9341 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9342 | |
9343 | /* If there aren't any relocs, then there's nothing more | |
9344 | to do. */ | |
9345 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9346 | || (section->flags & SEC_ALLOC) == 0 |
9347 | || (section->flags & SEC_LOAD) == 0 | |
9348 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9349 | || section->reloc_count == 0) |
9350 | continue; | |
9351 | ||
9352 | /* If this section is a link-once section that will be | |
9353 | discarded, then don't create any stubs. */ | |
9354 | if (section->output_section == NULL | |
9355 | || section->output_section->owner != output_bfd) | |
9356 | continue; | |
9357 | ||
1e2f5b6e AM |
9358 | /* Get the relocs. */ |
9359 | internal_relocs | |
4ce794b7 | 9360 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9361 | info->keep_memory); |
721956f4 | 9362 | if (internal_relocs == NULL) |
1e2f5b6e | 9363 | goto error_ret_free_local; |
721956f4 AM |
9364 | |
9365 | /* Now examine each relocation. */ | |
9366 | irela = internal_relocs; | |
9367 | irelaend = irela + section->reloc_count; | |
9368 | for (; irela < irelaend; irela++) | |
9369 | { | |
4ce794b7 AM |
9370 | enum elf_ppc64_reloc_type r_type; |
9371 | unsigned int r_indx; | |
721956f4 AM |
9372 | enum ppc_stub_type stub_type; |
9373 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9374 | asection *sym_sec, *code_sec; |
721956f4 AM |
9375 | bfd_vma sym_value; |
9376 | bfd_vma destination; | |
8843416a | 9377 | bfd_boolean ok_dest; |
721956f4 | 9378 | struct ppc_link_hash_entry *hash; |
8387904d | 9379 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9380 | struct elf_link_hash_entry *h; |
9381 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9382 | char *stub_name; |
9383 | const asection *id_sec; | |
8387904d | 9384 | long *opd_adjust; |
721956f4 AM |
9385 | |
9386 | r_type = ELF64_R_TYPE (irela->r_info); | |
9387 | r_indx = ELF64_R_SYM (irela->r_info); | |
9388 | ||
4ce794b7 | 9389 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9390 | { |
9391 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9392 | goto error_ret_free_internal; |
721956f4 AM |
9393 | } |
9394 | ||
9395 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9396 | if (r_type != R_PPC64_REL24 |
9397 | && r_type != R_PPC64_REL14 | |
9398 | && r_type != R_PPC64_REL14_BRTAKEN | |
9399 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9400 | continue; |
9401 | ||
9402 | /* Now determine the call target, its name, value, | |
9403 | section. */ | |
411e1bfb AM |
9404 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9405 | r_indx, input_bfd)) | |
9406 | goto error_ret_free_internal; | |
9407 | hash = (struct ppc_link_hash_entry *) h; | |
9408 | ||
8843416a | 9409 | ok_dest = FALSE; |
8387904d | 9410 | fdh = NULL; |
7fe2b9a6 | 9411 | sym_value = 0; |
411e1bfb | 9412 | if (hash == NULL) |
721956f4 | 9413 | { |
411e1bfb | 9414 | sym_value = sym->st_value; |
8843416a | 9415 | ok_dest = TRUE; |
721956f4 | 9416 | } |
7fe2b9a6 AM |
9417 | else if (hash->elf.root.type == bfd_link_hash_defined |
9418 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9419 | { | |
9420 | sym_value = hash->elf.root.u.def.value; | |
9421 | if (sym_sec->output_section != NULL) | |
9422 | ok_dest = TRUE; | |
9423 | } | |
9424 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9425 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9426 | { |
99877b66 | 9427 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9428 | use the func descriptor sym instead if it is |
9429 | defined. */ | |
ceb1f1ef | 9430 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9431 | && (fdh = get_fdh (hash, htab)) != NULL) |
9432 | { | |
8387904d AM |
9433 | if (fdh->elf.root.type == bfd_link_hash_defined |
9434 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9435 | { | |
9436 | sym_sec = fdh->elf.root.u.def.section; | |
9437 | sym_value = fdh->elf.root.u.def.value; | |
9438 | if (sym_sec->output_section != NULL) | |
9439 | ok_dest = TRUE; | |
9440 | } | |
99877b66 AM |
9441 | else |
9442 | fdh = NULL; | |
8387904d | 9443 | } |
7fe2b9a6 AM |
9444 | } |
9445 | else | |
9446 | { | |
9447 | bfd_set_error (bfd_error_bad_value); | |
9448 | goto error_ret_free_internal; | |
721956f4 AM |
9449 | } |
9450 | ||
8843416a AM |
9451 | destination = 0; |
9452 | if (ok_dest) | |
9453 | { | |
9454 | sym_value += irela->r_addend; | |
9455 | destination = (sym_value | |
9456 | + sym_sec->output_offset | |
9457 | + sym_sec->output_section->vma); | |
9458 | } | |
9459 | ||
8387904d AM |
9460 | code_sec = sym_sec; |
9461 | opd_adjust = get_opd_info (sym_sec); | |
9462 | if (opd_adjust != NULL) | |
9463 | { | |
9464 | bfd_vma dest; | |
9465 | ||
9466 | if (hash == NULL) | |
9467 | { | |
3f764659 | 9468 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9469 | if (adjust == -1) |
9470 | continue; | |
9471 | sym_value += adjust; | |
9472 | } | |
9473 | dest = opd_entry_value (sym_sec, sym_value, | |
9474 | &code_sec, &sym_value); | |
9475 | if (dest != (bfd_vma) -1) | |
9476 | { | |
9477 | destination = dest; | |
9478 | if (fdh != NULL) | |
9479 | { | |
9480 | /* Fixup old ABI sym to point at code | |
9481 | entry. */ | |
99877b66 | 9482 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9483 | hash->elf.root.u.def.section = code_sec; |
9484 | hash->elf.root.u.def.value = sym_value; | |
9485 | } | |
9486 | } | |
9487 | } | |
9488 | ||
721956f4 AM |
9489 | /* Determine what (if any) linker stub is needed. */ |
9490 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9491 | destination); | |
ad8e1ba5 AM |
9492 | |
9493 | if (stub_type != ppc_stub_plt_call) | |
9494 | { | |
9495 | /* Check whether we need a TOC adjusting stub. | |
9496 | Since the linker pastes together pieces from | |
9497 | different object files when creating the | |
9498 | _init and _fini functions, it may be that a | |
9499 | call to what looks like a local sym is in | |
9500 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9501 | if (code_sec != NULL |
9502 | && code_sec->output_section != NULL | |
9503 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9504 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9505 | && (code_sec->has_toc_reloc |
9506 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9507 | stub_type = ppc_stub_long_branch_r2off; |
9508 | } | |
9509 | ||
721956f4 AM |
9510 | if (stub_type == ppc_stub_none) |
9511 | continue; | |
9512 | ||
411e1bfb AM |
9513 | /* __tls_get_addr calls might be eliminated. */ |
9514 | if (stub_type != ppc_stub_plt_call | |
9515 | && hash != NULL | |
8387904d AM |
9516 | && (hash == htab->tls_get_addr |
9517 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9518 | && section->has_tls_reloc |
9519 | && irela != internal_relocs) | |
9520 | { | |
9521 | /* Get tls info. */ | |
e7b938ca | 9522 | char *tls_mask; |
411e1bfb | 9523 | |
0d4792f7 | 9524 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9525 | irela - 1, input_bfd)) |
9526 | goto error_ret_free_internal; | |
e7b938ca | 9527 | if (*tls_mask != 0) |
411e1bfb AM |
9528 | continue; |
9529 | } | |
9530 | ||
721956f4 AM |
9531 | /* Support for grouping stub sections. */ |
9532 | id_sec = htab->stub_group[section->id].link_sec; | |
9533 | ||
9534 | /* Get the name of this stub. */ | |
9535 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9536 | if (!stub_name) | |
9537 | goto error_ret_free_internal; | |
9538 | ||
9539 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9540 | stub_name, FALSE, FALSE); |
721956f4 AM |
9541 | if (stub_entry != NULL) |
9542 | { | |
9543 | /* The proper stub has already been created. */ | |
9544 | free (stub_name); | |
9545 | continue; | |
9546 | } | |
9547 | ||
9548 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9549 | if (stub_entry == NULL) | |
9550 | { | |
9551 | free (stub_name); | |
6cdc0ccc AM |
9552 | error_ret_free_internal: |
9553 | if (elf_section_data (section)->relocs == NULL) | |
9554 | free (internal_relocs); | |
9555 | error_ret_free_local: | |
9556 | if (local_syms != NULL | |
9557 | && (symtab_hdr->contents | |
9558 | != (unsigned char *) local_syms)) | |
9559 | free (local_syms); | |
b34976b6 | 9560 | return FALSE; |
721956f4 AM |
9561 | } |
9562 | ||
ad8e1ba5 | 9563 | stub_entry->stub_type = stub_type; |
721956f4 | 9564 | stub_entry->target_value = sym_value; |
8387904d | 9565 | stub_entry->target_section = code_sec; |
721956f4 | 9566 | stub_entry->h = hash; |
411e1bfb | 9567 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9568 | |
9569 | if (stub_entry->h != NULL) | |
9570 | htab->stub_globals += 1; | |
721956f4 AM |
9571 | } |
9572 | ||
9573 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9574 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9575 | free (internal_relocs); |
721956f4 | 9576 | } |
6cdc0ccc AM |
9577 | |
9578 | if (local_syms != NULL | |
9579 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9580 | { | |
9581 | if (!info->keep_memory) | |
9582 | free (local_syms); | |
9583 | else | |
9584 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9585 | } | |
721956f4 AM |
9586 | } |
9587 | ||
5c3dead3 | 9588 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9589 | stub sections. */ |
9590 | for (stub_sec = htab->stub_bfd->sections; | |
9591 | stub_sec != NULL; | |
9592 | stub_sec = stub_sec->next) | |
e717da7e | 9593 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9594 | { |
5c3dead3 | 9595 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9596 | stub_sec->size = 0; |
9597 | stub_sec->reloc_count = 0; | |
84f5d08e | 9598 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 9599 | } |
eea6121a AM |
9600 | |
9601 | htab->brlt->size = 0; | |
84f5d08e AM |
9602 | htab->brlt->reloc_count = 0; |
9603 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 9604 | if (htab->relbrlt != NULL) |
eea6121a | 9605 | htab->relbrlt->size = 0; |
721956f4 | 9606 | |
63bc6f6c | 9607 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9608 | |
5c3dead3 AM |
9609 | for (stub_sec = htab->stub_bfd->sections; |
9610 | stub_sec != NULL; | |
9611 | stub_sec = stub_sec->next) | |
9612 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9613 | && stub_sec->rawsize != stub_sec->size) | |
9614 | break; | |
9615 | ||
9616 | /* Exit from this loop when no stubs have been added, and no stubs | |
9617 | have changed size. */ | |
9618 | if (stub_sec == NULL) | |
9619 | break; | |
9620 | ||
721956f4 AM |
9621 | /* Ask the linker to do its stuff. */ |
9622 | (*htab->layout_sections_again) (); | |
9623 | } | |
9624 | ||
c456f082 | 9625 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9626 | section is empty, but it's too late. If we strip sections here, |
9627 | the dynamic symbol table is corrupted since the section symbol | |
9628 | for the stripped section isn't written. */ | |
721956f4 | 9629 | |
b34976b6 | 9630 | return TRUE; |
721956f4 AM |
9631 | } |
9632 | ||
9633 | /* Called after we have determined section placement. If sections | |
805fc799 | 9634 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9635 | |
805fc799 | 9636 | bfd_vma |
4ce794b7 | 9637 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9638 | { |
805fc799 AM |
9639 | asection *s; |
9640 | bfd_vma TOCstart; | |
721956f4 | 9641 | |
805fc799 AM |
9642 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9643 | order. The TOC starts where the first of these sections starts. */ | |
9644 | s = bfd_get_section_by_name (obfd, ".got"); | |
9645 | if (s == NULL) | |
9646 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9647 | if (s == NULL) | |
9648 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9649 | if (s == NULL) | |
9650 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9651 | if (s == NULL) | |
9652 | { | |
9653 | /* This may happen for | |
9654 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9655 | .toc directive | |
9656 | o bad linker script | |
9657 | o --gc-sections and empty TOC sections | |
9658 | ||
9659 | FIXME: Warn user? */ | |
9660 | ||
9661 | /* Look for a likely section. We probably won't even be | |
9662 | using TOCstart. */ | |
9663 | for (s = obfd->sections; s != NULL; s = s->next) | |
9664 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9665 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9666 | break; | |
721956f4 | 9667 | if (s == NULL) |
805fc799 AM |
9668 | for (s = obfd->sections; s != NULL; s = s->next) |
9669 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9670 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9671 | break; | |
721956f4 | 9672 | if (s == NULL) |
805fc799 AM |
9673 | for (s = obfd->sections; s != NULL; s = s->next) |
9674 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9675 | break; | |
721956f4 | 9676 | if (s == NULL) |
805fc799 AM |
9677 | for (s = obfd->sections; s != NULL; s = s->next) |
9678 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9679 | break; | |
9680 | } | |
721956f4 | 9681 | |
805fc799 AM |
9682 | TOCstart = 0; |
9683 | if (s != NULL) | |
9684 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9685 | |
805fc799 | 9686 | return TOCstart; |
721956f4 AM |
9687 | } |
9688 | ||
9689 | /* Build all the stubs associated with the current output file. | |
9690 | The stubs are kept in a hash table attached to the main linker | |
9691 | hash table. This function is called via gldelf64ppc_finish. */ | |
9692 | ||
b34976b6 | 9693 | bfd_boolean |
4ce794b7 AM |
9694 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9695 | struct bfd_link_info *info, | |
9696 | char **stats) | |
5d1634d7 AM |
9697 | { |
9698 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9699 | asection *stub_sec; |
5d1634d7 | 9700 | bfd_byte *p; |
e717da7e | 9701 | int stub_sec_count = 0; |
5d1634d7 | 9702 | |
ad8e1ba5 | 9703 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9704 | |
9705 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9706 | for (stub_sec = htab->stub_bfd->sections; |
9707 | stub_sec != NULL; | |
9708 | stub_sec = stub_sec->next) | |
eea6121a AM |
9709 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9710 | && stub_sec->size != 0) | |
e717da7e | 9711 | { |
eea6121a AM |
9712 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9713 | if (stub_sec->contents == NULL) | |
9714 | return FALSE; | |
9715 | /* We want to check that built size is the same as calculated | |
9716 | size. rawsize is a convenient location to use. */ | |
9717 | stub_sec->rawsize = stub_sec->size; | |
9718 | stub_sec->size = 0; | |
e717da7e | 9719 | } |
5d1634d7 | 9720 | |
23eb7e01 | 9721 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9722 | { |
9f951329 | 9723 | unsigned int indx; |
ad8e1ba5 | 9724 | bfd_vma plt0; |
9f951329 | 9725 | |
721956f4 | 9726 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9727 | if (htab->emit_stub_syms) |
9728 | { | |
9729 | struct elf_link_hash_entry *h; | |
9730 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9731 | if (h == NULL) | |
9732 | return FALSE; | |
9733 | if (h->root.type == bfd_link_hash_new) | |
9734 | { | |
9735 | h->root.type = bfd_link_hash_defined; | |
9736 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9737 | h->root.u.def.value = 8; |
f5385ebf AM |
9738 | h->ref_regular = 1; |
9739 | h->def_regular = 1; | |
9740 | h->ref_regular_nonweak = 1; | |
9741 | h->forced_local = 1; | |
9742 | h->non_elf = 0; | |
97b639ba AM |
9743 | } |
9744 | } | |
4ce794b7 | 9745 | p = htab->glink->contents; |
ee4bf8d2 AM |
9746 | plt0 = (htab->plt->output_section->vma |
9747 | + htab->plt->output_offset | |
9748 | - (htab->glink->output_section->vma | |
9749 | + htab->glink->output_offset | |
9750 | + 16)); | |
9751 | bfd_put_64 (htab->glink->owner, plt0, p); | |
9752 | p += 8; | |
9753 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 9754 | p += 4; |
ee4bf8d2 | 9755 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 9756 | p += 4; |
ee4bf8d2 | 9757 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 9758 | p += 4; |
ee4bf8d2 | 9759 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 9760 | p += 4; |
ee4bf8d2 | 9761 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 9762 | p += 4; |
ee4bf8d2 | 9763 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 9764 | p += 4; |
ee4bf8d2 | 9765 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 9766 | p += 4; |
4ce794b7 | 9767 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9768 | p += 4; |
4ce794b7 | 9769 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9770 | p += 4; |
4ce794b7 | 9771 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9772 | p += 4; |
4ce794b7 | 9773 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 9774 | p += 4; |
ee4bf8d2 AM |
9775 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
9776 | { | |
9777 | bfd_put_32 (htab->glink->owner, NOP, p); | |
9778 | p += 4; | |
9779 | } | |
ad8e1ba5 | 9780 | |
9f951329 AM |
9781 | /* Build the .glink lazy link call stubs. */ |
9782 | indx = 0; | |
eea6121a | 9783 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9784 | { |
9785 | if (indx < 0x8000) | |
9786 | { | |
4ce794b7 | 9787 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9788 | p += 4; |
9789 | } | |
9790 | else | |
9791 | { | |
4ce794b7 | 9792 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9793 | p += 4; |
4ce794b7 | 9794 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9795 | p += 4; |
9796 | } | |
4ce794b7 | 9797 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 9798 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 9799 | indx++; |
9f951329 AM |
9800 | p += 4; |
9801 | } | |
eea6121a | 9802 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9803 | } |
5d1634d7 | 9804 | |
eea6121a | 9805 | if (htab->brlt->size != 0) |
721956f4 | 9806 | { |
4ce794b7 | 9807 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9808 | htab->brlt->size); |
4ce794b7 | 9809 | if (htab->brlt->contents == NULL) |
b34976b6 | 9810 | return FALSE; |
721956f4 | 9811 | } |
ee75fd95 | 9812 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9813 | { |
9814 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9815 | htab->relbrlt->size); |
63bc6f6c AM |
9816 | if (htab->relbrlt->contents == NULL) |
9817 | return FALSE; | |
9818 | } | |
5d1634d7 | 9819 | |
721956f4 AM |
9820 | /* Build the stubs as directed by the stub hash table. */ |
9821 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9822 | |
aa8a7074 AM |
9823 | if (htab->relbrlt != NULL) |
9824 | htab->relbrlt->reloc_count = 0; | |
9825 | ||
721956f4 AM |
9826 | for (stub_sec = htab->stub_bfd->sections; |
9827 | stub_sec != NULL; | |
9828 | stub_sec = stub_sec->next) | |
e717da7e AM |
9829 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9830 | { | |
9831 | stub_sec_count += 1; | |
eea6121a | 9832 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9833 | break; |
9834 | } | |
5d1634d7 | 9835 | |
721956f4 | 9836 | if (stub_sec != NULL |
eea6121a | 9837 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9838 | { |
b34976b6 | 9839 | htab->stub_error = TRUE; |
721956f4 | 9840 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9841 | } |
721956f4 | 9842 | |
d2a300cf AM |
9843 | if (htab->stub_error) |
9844 | return FALSE; | |
9845 | ||
9846 | if (stats != NULL) | |
9847 | { | |
9848 | *stats = bfd_malloc (500); | |
9849 | if (*stats == NULL) | |
9850 | return FALSE; | |
9851 | ||
ee75fd95 | 9852 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9853 | " branch %lu\n" |
9854 | " toc adjust %lu\n" | |
9855 | " long branch %lu\n" | |
9856 | " long toc adj %lu\n" | |
9857 | " plt call %lu"), | |
e717da7e | 9858 | stub_sec_count, |
ee75fd95 | 9859 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9860 | htab->stub_count[ppc_stub_long_branch - 1], |
9861 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9862 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9863 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9864 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9865 | } |
9866 | return TRUE; | |
5bd4f169 AM |
9867 | } |
9868 | ||
99877b66 AM |
9869 | /* This function undoes the changes made by add_symbol_adjust. */ |
9870 | ||
9871 | static bfd_boolean | |
9872 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9873 | { | |
9874 | struct ppc_link_hash_entry *eh; | |
9875 | ||
9876 | if (h->root.type == bfd_link_hash_indirect) | |
9877 | return TRUE; | |
9878 | ||
9879 | if (h->root.type == bfd_link_hash_warning) | |
9880 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9881 | ||
9882 | eh = (struct ppc_link_hash_entry *) h; | |
9883 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9884 | return TRUE; | |
9885 | ||
9886 | eh->elf.root.type = bfd_link_hash_undefined; | |
9887 | return TRUE; | |
9888 | } | |
9889 | ||
9890 | void | |
9891 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9892 | { | |
9893 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9894 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9895 | } | |
9896 | ||
60124e18 AM |
9897 | /* What to do when ld finds relocations against symbols defined in |
9898 | discarded sections. */ | |
9899 | ||
9900 | static unsigned int | |
9901 | ppc64_elf_action_discarded (asection *sec) | |
9902 | { | |
9903 | if (strcmp (".opd", sec->name) == 0) | |
9904 | return 0; | |
9905 | ||
9906 | if (strcmp (".toc", sec->name) == 0) | |
9907 | return 0; | |
9908 | ||
bce50a28 JJ |
9909 | if (strcmp (".toc1", sec->name) == 0) |
9910 | return 0; | |
9911 | ||
60124e18 AM |
9912 | return _bfd_elf_default_action_discarded (sec); |
9913 | } | |
9914 | ||
5bd4f169 AM |
9915 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9916 | to handle the relocations for a section. | |
9917 | ||
9918 | The relocs are always passed as Rela structures; if the section | |
9919 | actually uses Rel structures, the r_addend field will always be | |
9920 | zero. | |
9921 | ||
9922 | This function is responsible for adjust the section contents as | |
9923 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9924 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9925 | necessary. |
9926 | ||
9927 | This function does not have to worry about setting the reloc | |
9928 | address or the reloc symbol index. | |
9929 | ||
9930 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9931 | ||
9932 | LOCAL_SECTIONS is an array giving the section in the input file | |
9933 | corresponding to the st_shndx field of each local symbol. | |
9934 | ||
9935 | The global hash table entry for the global symbols can be found | |
9936 | via elf_sym_hashes (input_bfd). | |
9937 | ||
1049f94e | 9938 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9939 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9940 | going to be the section symbol corresponding to the output | |
9941 | section, which means that the addend must be adjusted | |
9942 | accordingly. */ | |
9943 | ||
b34976b6 | 9944 | static bfd_boolean |
4ce794b7 AM |
9945 | ppc64_elf_relocate_section (bfd *output_bfd, |
9946 | struct bfd_link_info *info, | |
9947 | bfd *input_bfd, | |
9948 | asection *input_section, | |
9949 | bfd_byte *contents, | |
9950 | Elf_Internal_Rela *relocs, | |
9951 | Elf_Internal_Sym *local_syms, | |
9952 | asection **local_sections) | |
5bd4f169 | 9953 | { |
65f38f15 | 9954 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9955 | Elf_Internal_Shdr *symtab_hdr; |
9956 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9957 | Elf_Internal_Rela *rel; |
9958 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9959 | Elf_Internal_Rela outrel; |
9960 | bfd_byte *loc; | |
411e1bfb | 9961 | struct got_entry **local_got_ents; |
5bd4f169 | 9962 | bfd_vma TOCstart; |
b34976b6 AM |
9963 | bfd_boolean ret = TRUE; |
9964 | bfd_boolean is_opd; | |
96e0dda4 | 9965 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9966 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 9967 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 9968 | |
65f38f15 | 9969 | /* Initialize howto table if needed. */ |
5bd4f169 | 9970 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9971 | ppc_howto_init (); |
9972 | ||
65f38f15 | 9973 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9974 | |
9975 | /* Don't relocate stub sections. */ | |
9976 | if (input_section->owner == htab->stub_bfd) | |
9977 | return TRUE; | |
9978 | ||
411e1bfb | 9979 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9980 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9981 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9982 | sym_hashes = elf_sym_hashes (input_bfd); | |
7c8fe5c4 | 9983 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 9984 | |
5bd4f169 AM |
9985 | rel = relocs; |
9986 | relend = relocs + input_section->reloc_count; | |
9987 | for (; rel < relend; rel++) | |
9988 | { | |
04c9666a | 9989 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9990 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9991 | bfd_reloc_status_type r; |
9992 | Elf_Internal_Sym *sym; | |
9993 | asection *sec; | |
039b3fef AM |
9994 | struct elf_link_hash_entry *h_elf; |
9995 | struct ppc_link_hash_entry *h; | |
9996 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9997 | const char *sym_name; |
0d4792f7 | 9998 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9999 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 10000 | char sym_type; |
5bd4f169 | 10001 | bfd_vma relocation; |
b34976b6 AM |
10002 | bfd_boolean unresolved_reloc; |
10003 | bfd_boolean warned; | |
50bc7936 | 10004 | unsigned long insn, mask; |
721956f4 AM |
10005 | struct ppc_stub_hash_entry *stub_entry; |
10006 | bfd_vma max_br_offset; | |
10007 | bfd_vma from; | |
5bd4f169 | 10008 | |
4ce794b7 | 10009 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 10010 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
10011 | |
10012 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
10013 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
10014 | proper TOC base to use. */ | |
10015 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
10016 | && rel != relocs | |
10017 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
10018 | && is_opd) | |
10019 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
10020 | ||
4ce794b7 AM |
10021 | sym = NULL; |
10022 | sec = NULL; | |
039b3fef | 10023 | h_elf = NULL; |
4ce794b7 | 10024 | sym_name = NULL; |
b34976b6 AM |
10025 | unresolved_reloc = FALSE; |
10026 | warned = FALSE; | |
4cc603a5 | 10027 | orig_addend = rel->r_addend; |
65f38f15 | 10028 | |
0b13192e | 10029 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
10030 | { |
10031 | /* It's a local symbol. */ | |
4025353c AM |
10032 | long *opd_adjust; |
10033 | ||
5bd4f169 AM |
10034 | sym = local_syms + r_symndx; |
10035 | sec = local_sections[r_symndx]; | |
26c61ae5 | 10036 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 10037 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 10038 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
10039 | opd_adjust = get_opd_info (sec); |
10040 | if (opd_adjust != NULL) | |
1e2f5b6e | 10041 | { |
3f764659 | 10042 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
10043 | if (adjust == -1) |
10044 | relocation = 0; | |
10045 | else | |
4cc603a5 AM |
10046 | { |
10047 | /* If this is a relocation against the opd section sym | |
10048 | and we have edited .opd, adjust the reloc addend so | |
10049 | that ld -r and ld --emit-relocs output is correct. | |
10050 | If it is a reloc against some other .opd symbol, | |
10051 | then the symbol value will be adjusted later. */ | |
10052 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10053 | rel->r_addend += adjust; | |
10054 | else | |
10055 | relocation += adjust; | |
10056 | } | |
1e2f5b6e | 10057 | } |
5bd4f169 AM |
10058 | } |
10059 | else | |
10060 | { | |
b2a8e766 AM |
10061 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
10062 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 10063 | h_elf, sec, relocation, |
b2a8e766 | 10064 | unresolved_reloc, warned); |
039b3fef AM |
10065 | sym_name = h_elf->root.root.string; |
10066 | sym_type = h_elf->type; | |
5bd4f169 | 10067 | } |
039b3fef | 10068 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 10069 | |
ab96bf03 AM |
10070 | if (sec != NULL && elf_discarded_section (sec)) |
10071 | { | |
10072 | /* For relocs against symbols from removed linkonce sections, | |
10073 | or sections discarded by a linker script, we just want the | |
10074 | section contents zeroed. Avoid any special processing. */ | |
10075 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10076 | contents + rel->r_offset); | |
10077 | rel->r_info = 0; | |
10078 | rel->r_addend = 0; | |
10079 | continue; | |
10080 | } | |
10081 | ||
10082 | if (info->relocatable) | |
10083 | continue; | |
10084 | ||
951fd09b AM |
10085 | /* TLS optimizations. Replace instruction sequences and relocs |
10086 | based on information we collected in tls_optimize. We edit | |
10087 | RELOCS so that --emit-relocs will output something sensible | |
10088 | for the final instruction stream. */ | |
10089 | tls_mask = 0; | |
10090 | tls_gd = 0; | |
0d4792f7 | 10091 | toc_symndx = 0; |
d881513a | 10092 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
10093 | { |
10094 | if (h != NULL) | |
039b3fef | 10095 | tls_mask = h->tls_mask; |
411e1bfb AM |
10096 | else if (local_got_ents != NULL) |
10097 | { | |
e7b938ca AM |
10098 | char *lgot_masks; |
10099 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
10100 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 10101 | } |
0d4792f7 AM |
10102 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
10103 | { | |
10104 | /* Check for toc tls entries. */ | |
10105 | char *toc_tls; | |
10106 | ||
10107 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
10108 | rel, input_bfd)) | |
10109 | return FALSE; | |
10110 | ||
10111 | if (toc_tls) | |
10112 | tls_mask = *toc_tls; | |
10113 | } | |
10114 | } | |
10115 | ||
10116 | /* Check that tls relocs are used with tls syms, and non-tls | |
10117 | relocs are used with non-tls syms. */ | |
10118 | if (r_symndx != 0 | |
10119 | && r_type != R_PPC64_NONE | |
10120 | && (h == NULL | |
039b3fef AM |
10121 | || h->elf.root.type == bfd_link_hash_defined |
10122 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
10123 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
10124 | { | |
10125 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
10126 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
10127 | ; | |
10128 | else | |
10129 | (*_bfd_error_handler) | |
10130 | (sym_type == STT_TLS | |
d003868e AM |
10131 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
10132 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
10133 | input_bfd, | |
10134 | input_section, | |
0d4792f7 AM |
10135 | (long) rel->r_offset, |
10136 | ppc64_elf_howto_table[r_type]->name, | |
10137 | sym_name); | |
411e1bfb AM |
10138 | } |
10139 | ||
10140 | /* Ensure reloc mapping code below stays sane. */ | |
10141 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
10142 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
10143 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
10144 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
10145 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
10146 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
10147 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
10148 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
10149 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
10150 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
10151 | abort (); | |
0d4792f7 | 10152 | |
411e1bfb AM |
10153 | switch (r_type) |
10154 | { | |
10155 | default: | |
411e1bfb AM |
10156 | break; |
10157 | ||
10158 | case R_PPC64_TOC16: | |
10159 | case R_PPC64_TOC16_LO: | |
10160 | case R_PPC64_TOC16_DS: | |
10161 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10162 | { |
10163 | /* Check for toc tls entries. */ | |
10164 | char *toc_tls; | |
951fd09b | 10165 | int retval; |
411e1bfb | 10166 | |
0d4792f7 AM |
10167 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
10168 | rel, input_bfd); | |
951fd09b | 10169 | if (retval == 0) |
411e1bfb AM |
10170 | return FALSE; |
10171 | ||
10172 | if (toc_tls) | |
10173 | { | |
951fd09b | 10174 | tls_mask = *toc_tls; |
411e1bfb AM |
10175 | if (r_type == R_PPC64_TOC16_DS |
10176 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10177 | { |
10178 | if (tls_mask != 0 | |
10179 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10180 | goto toctprel; | |
10181 | } | |
411e1bfb | 10182 | else |
951fd09b AM |
10183 | { |
10184 | /* If we found a GD reloc pair, then we might be | |
10185 | doing a GD->IE transition. */ | |
10186 | if (retval == 2) | |
10187 | { | |
10188 | tls_gd = TLS_TPRELGD; | |
10189 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10190 | goto tls_ldgd_opt; |
951fd09b AM |
10191 | } |
10192 | else if (retval == 3) | |
10193 | { | |
10194 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 10195 | goto tls_ldgd_opt; |
951fd09b AM |
10196 | } |
10197 | } | |
411e1bfb AM |
10198 | } |
10199 | } | |
10200 | break; | |
10201 | ||
10202 | case R_PPC64_GOT_TPREL16_DS: | |
10203 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10204 | if (tls_mask != 0 |
10205 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10206 | { |
81407a69 | 10207 | toctprel: |
4fe5ca5b | 10208 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10209 | insn &= 31 << 21; |
10210 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10211 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10212 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10213 | if (toc_symndx != 0) |
10214 | { | |
10215 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10216 | /* We changed the symbol. Start over in order to | |
10217 | get h, sym, sec etc. right. */ | |
10218 | rel--; | |
10219 | continue; | |
10220 | } | |
10221 | else | |
10222 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10223 | } |
10224 | break; | |
10225 | ||
10226 | case R_PPC64_TLS: | |
951fd09b AM |
10227 | if (tls_mask != 0 |
10228 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10229 | { |
50bc7936 | 10230 | bfd_vma rtra; |
411e1bfb | 10231 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10232 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10233 | == ((31 << 26) | (13 << 11))) |
10234 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10235 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10236 | == ((31 << 26) | (13 << 16))) |
10237 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10238 | else | |
10239 | abort (); | |
10240 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10241 | /* add -> addi. */ | |
10242 | insn = 14 << 26; | |
10243 | else if ((insn & (31 << 1)) == 23 << 1 | |
10244 | && ((insn & (31 << 6)) < 14 << 6 | |
10245 | || ((insn & (31 << 6)) >= 16 << 6 | |
10246 | && (insn & (31 << 6)) < 24 << 6))) | |
10247 | /* load and store indexed -> dform. */ | |
10248 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10249 | else if ((insn & (31 << 1)) == 21 << 1 | |
10250 | && (insn & (0x1a << 6)) == 0) | |
10251 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10252 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10253 | | ((insn >> 6) & 1)); | |
10254 | else if ((insn & (31 << 1)) == 21 << 1 | |
10255 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10256 | /* lwax -> lwa. */ | |
10257 | insn = (58 << 26) | 2; | |
10258 | else | |
10259 | abort (); | |
10260 | insn |= rtra; | |
10261 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10262 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10263 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10264 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10265 | r_type = R_PPC64_TPREL16_LO; |
10266 | if (toc_symndx != 0) | |
10267 | { | |
10268 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10269 | /* We changed the symbol. Start over in order to | |
10270 | get h, sym, sec etc. right. */ | |
10271 | rel--; | |
10272 | continue; | |
10273 | } | |
10274 | else | |
10275 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10276 | } |
10277 | break; | |
10278 | ||
411e1bfb AM |
10279 | case R_PPC64_GOT_TLSGD16_HI: |
10280 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10281 | tls_gd = TLS_TPRELGD; |
10282 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10283 | goto tls_gdld_hi; | |
10284 | break; | |
10285 | ||
411e1bfb AM |
10286 | case R_PPC64_GOT_TLSLD16_HI: |
10287 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10288 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10289 | { |
951fd09b AM |
10290 | tls_gdld_hi: |
10291 | if ((tls_mask & tls_gd) != 0) | |
10292 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10293 | + R_PPC64_GOT_TPREL16_DS); | |
10294 | else | |
411e1bfb | 10295 | { |
951fd09b | 10296 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10297 | rel->r_offset -= d_offset; |
951fd09b | 10298 | r_type = R_PPC64_NONE; |
411e1bfb | 10299 | } |
951fd09b | 10300 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10301 | } |
10302 | break; | |
10303 | ||
951fd09b AM |
10304 | case R_PPC64_GOT_TLSGD16: |
10305 | case R_PPC64_GOT_TLSGD16_LO: | |
10306 | tls_gd = TLS_TPRELGD; | |
10307 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10308 | goto tls_ldgd_opt; |
951fd09b | 10309 | break; |
411e1bfb | 10310 | |
951fd09b AM |
10311 | case R_PPC64_GOT_TLSLD16: |
10312 | case R_PPC64_GOT_TLSLD16_LO: | |
10313 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10314 | { | |
102890f0 AM |
10315 | bfd_vma insn1, insn2, insn3; |
10316 | bfd_vma offset; | |
10317 | ||
10318 | tls_ldgd_opt: | |
10319 | /* We know that the next reloc is on a tls_get_addr | |
10320 | call, since ppc64_elf_tls_optimize checks this. */ | |
10321 | offset = rel[1].r_offset; | |
10322 | insn1 = bfd_get_32 (output_bfd, | |
10323 | contents + rel->r_offset - d_offset); | |
10324 | insn3 = bfd_get_32 (output_bfd, | |
10325 | contents + offset + 4); | |
10326 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10327 | { |
102890f0 AM |
10328 | /* IE */ |
10329 | insn1 &= (1 << 26) - (1 << 2); | |
10330 | insn1 |= 58 << 26; /* ld */ | |
10331 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10332 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10333 | R_PPC64_NONE); | |
10334 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10335 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10336 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 10337 | else |
102890f0 AM |
10338 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
10339 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10340 | } | |
10341 | else | |
10342 | { | |
10343 | /* LE */ | |
10344 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10345 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10346 | if (tls_gd == 0) | |
951fd09b | 10347 | { |
102890f0 AM |
10348 | /* Was an LD reloc. */ |
10349 | r_symndx = 0; | |
10350 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
10351 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10352 | } |
102890f0 AM |
10353 | else if (toc_symndx != 0) |
10354 | r_symndx = toc_symndx; | |
10355 | r_type = R_PPC64_TPREL16_HA; | |
10356 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10357 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10358 | R_PPC64_TPREL16_LO); | |
10359 | rel[1].r_offset += d_offset; | |
10360 | } | |
10361 | if (insn3 == NOP | |
10362 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10363 | { | |
10364 | insn3 = insn2; | |
10365 | insn2 = NOP; | |
10366 | rel[1].r_offset += 4; | |
10367 | } | |
10368 | bfd_put_32 (output_bfd, insn1, | |
10369 | contents + rel->r_offset - d_offset); | |
10370 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10371 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
10372 | if (tls_gd == 0 || toc_symndx != 0) | |
10373 | { | |
10374 | /* We changed the symbol. Start over in order | |
10375 | to get h, sym, sec etc. right. */ | |
10376 | rel--; | |
10377 | continue; | |
411e1bfb | 10378 | } |
411e1bfb | 10379 | } |
411e1bfb AM |
10380 | break; |
10381 | ||
10382 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10383 | if (rel + 1 < relend |
10384 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10385 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10386 | { |
951fd09b AM |
10387 | if ((tls_mask & TLS_GD) == 0) |
10388 | { | |
10389 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10390 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10391 | r_type = R_PPC64_TPREL64; | |
10392 | else | |
10393 | { | |
4ce794b7 | 10394 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10395 | r_type = R_PPC64_NONE; |
10396 | } | |
10397 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10398 | } | |
10399 | } | |
10400 | else | |
10401 | { | |
10402 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10403 | { |
4ce794b7 | 10404 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10405 | r_type = R_PPC64_NONE; |
951fd09b | 10406 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10407 | } |
411e1bfb AM |
10408 | } |
10409 | break; | |
10410 | ||
10411 | case R_PPC64_TPREL64: | |
951fd09b | 10412 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10413 | { |
10414 | r_type = R_PPC64_NONE; | |
10415 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10416 | } | |
10417 | break; | |
10418 | } | |
10419 | ||
10420 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10421 | insn = 0; |
b25116a9 AM |
10422 | max_br_offset = 1 << 25; |
10423 | addend = rel->r_addend; | |
65f38f15 | 10424 | switch (r_type) |
5bd4f169 AM |
10425 | { |
10426 | default: | |
65f38f15 | 10427 | break; |
5bd4f169 | 10428 | |
65f38f15 AM |
10429 | /* Branch taken prediction relocations. */ |
10430 | case R_PPC64_ADDR14_BRTAKEN: | |
10431 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10432 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10433 | /* Fall thru. */ | |
65f38f15 | 10434 | |
86c76c7b | 10435 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10436 | case R_PPC64_ADDR14_BRNTAKEN: |
10437 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10438 | insn |= bfd_get_32 (output_bfd, |
10439 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10440 | /* Fall thru. */ |
86c76c7b | 10441 | |
b25116a9 AM |
10442 | case R_PPC64_REL14: |
10443 | max_br_offset = 1 << 15; | |
10444 | /* Fall thru. */ | |
5bd4f169 | 10445 | |
65f38f15 | 10446 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10447 | /* Calls to functions with a different TOC, such as calls to |
10448 | shared objects, need to alter the TOC pointer. This is | |
10449 | done using a linkage stub. A REL24 branching to these | |
10450 | linkage stubs needs to be followed by a nop, as the nop | |
10451 | will be replaced with an instruction to restore the TOC | |
10452 | base pointer. */ | |
b25116a9 | 10453 | stub_entry = NULL; |
8387904d | 10454 | fdh = h; |
ad8e1ba5 | 10455 | if (((h != NULL |
039b3fef AM |
10456 | && (((fdh = h->oh) != NULL |
10457 | && fdh->elf.plt.plist != NULL) | |
10458 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10459 | || (sec != NULL |
ad8e1ba5 | 10460 | && sec->output_section != NULL |
b25116a9 | 10461 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10462 | && (htab->stub_group[sec->id].toc_off |
10463 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10464 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10465 | rel, htab)) != NULL |
10466 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10467 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10468 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10469 | { |
b25116a9 | 10470 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10471 | |
eea6121a | 10472 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10473 | { |
b25116a9 AM |
10474 | unsigned long nop; |
10475 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10476 | if (nop == NOP | |
10477 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10478 | { |
4ce794b7 | 10479 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10480 | contents + rel->r_offset + 4); |
b25116a9 | 10481 | can_plt_call = TRUE; |
41bd81ab | 10482 | } |
5bd4f169 | 10483 | } |
721956f4 AM |
10484 | |
10485 | if (!can_plt_call) | |
10486 | { | |
ad8e1ba5 AM |
10487 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10488 | { | |
10489 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10490 | and link, don't require a nop. However, don't |
10491 | allow tail calls in a shared library as they | |
10492 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10493 | unsigned long br; |
10494 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10495 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10496 | can_plt_call = TRUE; |
15b552e9 AM |
10497 | else |
10498 | stub_entry = NULL; | |
ad8e1ba5 | 10499 | } |
6ab189d5 | 10500 | else if (h != NULL |
039b3fef | 10501 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10502 | ".__libc_start_main") == 0) |
10503 | { | |
10504 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10505 | can_plt_call = TRUE; |
6ab189d5 | 10506 | } |
ad8e1ba5 AM |
10507 | else |
10508 | { | |
10509 | if (strcmp (input_section->output_section->name, | |
10510 | ".init") == 0 | |
10511 | || strcmp (input_section->output_section->name, | |
10512 | ".fini") == 0) | |
10513 | (*_bfd_error_handler) | |
d003868e | 10514 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10515 | "not supported using your crt files; " |
10516 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10517 | input_bfd, |
10518 | input_section, | |
ad8e1ba5 AM |
10519 | (long) rel->r_offset); |
10520 | else | |
10521 | (*_bfd_error_handler) | |
d003868e | 10522 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10523 | "does not allow automatic multiple TOCs; " |
10524 | "recompile with -mminimal-toc or " | |
10525 | "-fno-optimize-sibling-calls, " | |
10526 | "or make `%s' extern"), | |
d003868e AM |
10527 | input_bfd, |
10528 | input_section, | |
ad8e1ba5 AM |
10529 | (long) rel->r_offset, |
10530 | sym_name, | |
10531 | sym_name); | |
10532 | bfd_set_error (bfd_error_bad_value); | |
10533 | ret = FALSE; | |
10534 | } | |
721956f4 AM |
10535 | } |
10536 | ||
b25116a9 AM |
10537 | if (can_plt_call |
10538 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10539 | unresolved_reloc = FALSE; | |
10540 | } | |
10541 | ||
8387904d AM |
10542 | if (stub_entry == NULL |
10543 | && get_opd_info (sec) != NULL) | |
10544 | { | |
10545 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10546 | bfd_vma off = (relocation + addend |
10547 | - sec->output_section->vma | |
10548 | - sec->output_offset); | |
8387904d AM |
10549 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10550 | if (dest != (bfd_vma) -1) | |
10551 | { | |
10552 | relocation = dest; | |
10553 | addend = 0; | |
10554 | } | |
10555 | } | |
10556 | ||
b25116a9 AM |
10557 | /* If the branch is out of reach we ought to have a long |
10558 | branch stub. */ | |
10559 | from = (rel->r_offset | |
10560 | + input_section->output_offset | |
10561 | + input_section->output_section->vma); | |
10562 | ||
10563 | if (stub_entry == NULL | |
4cc603a5 | 10564 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10565 | >= 2 * max_br_offset) |
10566 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10567 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10568 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10569 | htab); | |
b25116a9 AM |
10570 | |
10571 | if (stub_entry != NULL) | |
10572 | { | |
10573 | /* Munge up the value and addend so that we call the stub | |
10574 | rather than the procedure directly. */ | |
10575 | relocation = (stub_entry->stub_offset | |
10576 | + stub_entry->stub_sec->output_offset | |
10577 | + stub_entry->stub_sec->output_section->vma); | |
10578 | addend = 0; | |
10579 | } | |
10580 | ||
10581 | if (insn != 0) | |
10582 | { | |
10583 | if (is_power4) | |
721956f4 | 10584 | { |
b25116a9 AM |
10585 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10586 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10587 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10588 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10589 | insn |= 0x02 << 21; | |
10590 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10591 | insn |= 0x08 << 21; | |
10592 | else | |
10593 | break; | |
10594 | } | |
10595 | else | |
10596 | { | |
10597 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10598 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10599 | insn ^= 0x01 << 21; |
721956f4 | 10600 | } |
b25116a9 AM |
10601 | |
10602 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10603 | } |
e86ce104 | 10604 | |
06da1e8e AM |
10605 | /* NOP out calls to undefined weak functions. |
10606 | We can thus call a weak function without first | |
10607 | checking whether the function is defined. */ | |
b25116a9 | 10608 | else if (h != NULL |
039b3fef | 10609 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10610 | && r_type == R_PPC64_REL24 |
10611 | && relocation == 0 | |
4cc603a5 | 10612 | && addend == 0) |
e86ce104 | 10613 | { |
06da1e8e AM |
10614 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10615 | continue; | |
e86ce104 | 10616 | } |
65f38f15 AM |
10617 | break; |
10618 | } | |
5bd4f169 | 10619 | |
65f38f15 | 10620 | /* Set `addend'. */ |
411e1bfb | 10621 | tls_type = 0; |
65f38f15 AM |
10622 | switch (r_type) |
10623 | { | |
10624 | default: | |
10625 | (*_bfd_error_handler) | |
d003868e AM |
10626 | (_("%B: unknown relocation type %d for symbol %s"), |
10627 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10628 | |
65f38f15 | 10629 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10630 | ret = FALSE; |
65f38f15 | 10631 | continue; |
5bd4f169 | 10632 | |
65f38f15 | 10633 | case R_PPC64_NONE: |
411e1bfb | 10634 | case R_PPC64_TLS: |
04c9666a AM |
10635 | case R_PPC64_GNU_VTINHERIT: |
10636 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10637 | continue; |
5bd4f169 AM |
10638 | |
10639 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10640 | address in the GOT as relocation value instead of the | |
411e1bfb | 10641 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10642 | symbol and put the symbol value there. */ |
411e1bfb AM |
10643 | case R_PPC64_GOT_TLSGD16: |
10644 | case R_PPC64_GOT_TLSGD16_LO: | |
10645 | case R_PPC64_GOT_TLSGD16_HI: | |
10646 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10647 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10648 | goto dogot; |
10649 | ||
10650 | case R_PPC64_GOT_TLSLD16: | |
10651 | case R_PPC64_GOT_TLSLD16_LO: | |
10652 | case R_PPC64_GOT_TLSLD16_HI: | |
10653 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10654 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10655 | goto dogot; |
10656 | ||
10657 | case R_PPC64_GOT_TPREL16_DS: | |
10658 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10659 | case R_PPC64_GOT_TPREL16_HI: | |
10660 | case R_PPC64_GOT_TPREL16_HA: | |
10661 | tls_type = TLS_TLS | TLS_TPREL; | |
10662 | goto dogot; | |
10663 | ||
10664 | case R_PPC64_GOT_DTPREL16_DS: | |
10665 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10666 | case R_PPC64_GOT_DTPREL16_HI: | |
10667 | case R_PPC64_GOT_DTPREL16_HA: | |
10668 | tls_type = TLS_TLS | TLS_DTPREL; | |
10669 | goto dogot; | |
10670 | ||
65f38f15 AM |
10671 | case R_PPC64_GOT16: |
10672 | case R_PPC64_GOT16_LO: | |
10673 | case R_PPC64_GOT16_HI: | |
10674 | case R_PPC64_GOT16_HA: | |
10675 | case R_PPC64_GOT16_DS: | |
10676 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10677 | dogot: |
5bd4f169 AM |
10678 | { |
10679 | /* Relocation is to the entry for this symbol in the global | |
10680 | offset table. */ | |
e717da7e | 10681 | asection *got; |
d881513a | 10682 | bfd_vma *offp; |
5bd4f169 | 10683 | bfd_vma off; |
d881513a | 10684 | unsigned long indx = 0; |
65f38f15 | 10685 | |
d881513a AM |
10686 | if (tls_type == (TLS_TLS | TLS_LD) |
10687 | && (h == NULL | |
f5385ebf | 10688 | || !h->elf.def_dynamic)) |
e717da7e | 10689 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10690 | else |
5bd4f169 | 10691 | { |
d881513a | 10692 | struct got_entry *ent; |
5bd4f169 | 10693 | |
d881513a AM |
10694 | if (h != NULL) |
10695 | { | |
10696 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10697 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10698 | &h->elf) | |
d881513a | 10699 | || (info->shared |
039b3fef | 10700 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10701 | /* This is actually a static link, or it is a |
10702 | -Bsymbolic link and the symbol is defined | |
10703 | locally, or the symbol was forced to be local | |
10704 | because of a version file. */ | |
10705 | ; | |
10706 | else | |
10707 | { | |
039b3fef | 10708 | indx = h->elf.dynindx; |
d881513a AM |
10709 | unresolved_reloc = FALSE; |
10710 | } | |
039b3fef | 10711 | ent = h->elf.got.glist; |
d881513a | 10712 | } |
411e1bfb | 10713 | else |
5bd4f169 | 10714 | { |
d881513a AM |
10715 | if (local_got_ents == NULL) |
10716 | abort (); | |
10717 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10718 | } |
d881513a AM |
10719 | |
10720 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10721 | if (ent->addend == orig_addend |
e717da7e | 10722 | && ent->owner == input_bfd |
d881513a AM |
10723 | && ent->tls_type == tls_type) |
10724 | break; | |
10725 | if (ent == NULL) | |
10726 | abort (); | |
10727 | offp = &ent->got.offset; | |
5bd4f169 | 10728 | } |
411e1bfb | 10729 | |
e717da7e AM |
10730 | got = ppc64_elf_tdata (input_bfd)->got; |
10731 | if (got == NULL) | |
10732 | abort (); | |
10733 | ||
411e1bfb AM |
10734 | /* The offset must always be a multiple of 8. We use the |
10735 | least significant bit to record whether we have already | |
10736 | processed this entry. */ | |
d881513a | 10737 | off = *offp; |
411e1bfb AM |
10738 | if ((off & 1) != 0) |
10739 | off &= ~1; | |
5bd4f169 AM |
10740 | else |
10741 | { | |
411e1bfb AM |
10742 | /* Generate relocs for the dynamic linker, except in |
10743 | the case of TLSLD where we'll use one entry per | |
10744 | module. */ | |
e717da7e AM |
10745 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10746 | ||
d881513a | 10747 | *offp = off | 1; |
4e795f50 AM |
10748 | if ((info->shared || indx != 0) |
10749 | && (h == NULL | |
039b3fef AM |
10750 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10751 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10752 | { |
e717da7e AM |
10753 | outrel.r_offset = (got->output_section->vma |
10754 | + got->output_offset | |
411e1bfb | 10755 | + off); |
4cc603a5 | 10756 | outrel.r_addend = addend; |
d881513a | 10757 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10758 | { |
411e1bfb | 10759 | outrel.r_addend = 0; |
e515b051 | 10760 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10761 | if (tls_type == (TLS_TLS | TLS_GD)) |
10762 | { | |
e717da7e AM |
10763 | loc = relgot->contents; |
10764 | loc += (relgot->reloc_count++ | |
d881513a AM |
10765 | * sizeof (Elf64_External_Rela)); |
10766 | bfd_elf64_swap_reloca_out (output_bfd, | |
10767 | &outrel, loc); | |
e515b051 | 10768 | outrel.r_offset += 8; |
4cc603a5 | 10769 | outrel.r_addend = addend; |
d881513a AM |
10770 | outrel.r_info |
10771 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10772 | } |
411e1bfb | 10773 | } |
951fd09b | 10774 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10775 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10776 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10777 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10778 | else if (indx == 0) | |
81407a69 AM |
10779 | { |
10780 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10781 | ||
10782 | /* Write the .got section contents for the sake | |
10783 | of prelink. */ | |
e717da7e | 10784 | loc = got->contents + off; |
23fbd6fa JJ |
10785 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10786 | loc); | |
81407a69 | 10787 | } |
411e1bfb AM |
10788 | else |
10789 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10790 | |
10791 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10792 | { |
10793 | outrel.r_addend += relocation; | |
10794 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10795 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10796 | } |
e717da7e AM |
10797 | loc = relgot->contents; |
10798 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10799 | * sizeof (Elf64_External_Rela)); |
10800 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10801 | } | |
10802 | ||
ad8e1ba5 | 10803 | /* Init the .got section contents here if we're not |
81407a69 | 10804 | emitting a reloc. */ |
d881513a | 10805 | else |
411e1bfb | 10806 | { |
4cc603a5 | 10807 | relocation += addend; |
7b609f53 AM |
10808 | if (tls_type == (TLS_TLS | TLS_LD)) |
10809 | relocation = 1; | |
10810 | else if (tls_type != 0) | |
411e1bfb | 10811 | { |
e1918d23 | 10812 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10813 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10814 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10815 | |
7b609f53 AM |
10816 | if (tls_type == (TLS_TLS | TLS_GD)) |
10817 | { | |
10818 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10819 | got->contents + off + 8); |
7b609f53 AM |
10820 | relocation = 1; |
10821 | } | |
411e1bfb | 10822 | } |
7b609f53 | 10823 | |
411e1bfb | 10824 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10825 | got->contents + off); |
5bd4f169 AM |
10826 | } |
10827 | } | |
10828 | ||
65f38f15 AM |
10829 | if (off >= (bfd_vma) -2) |
10830 | abort (); | |
10831 | ||
e717da7e | 10832 | relocation = got->output_offset + off; |
65f38f15 | 10833 | |
5bd4f169 | 10834 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10835 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10836 | } |
65f38f15 AM |
10837 | break; |
10838 | ||
10839 | case R_PPC64_PLT16_HA: | |
10840 | case R_PPC64_PLT16_HI: | |
10841 | case R_PPC64_PLT16_LO: | |
10842 | case R_PPC64_PLT32: | |
10843 | case R_PPC64_PLT64: | |
10844 | /* Relocation is to the entry for this symbol in the | |
10845 | procedure linkage table. */ | |
10846 | ||
10847 | /* Resolve a PLT reloc against a local symbol directly, | |
10848 | without using the procedure linkage table. */ | |
10849 | if (h == NULL) | |
10850 | break; | |
10851 | ||
411e1bfb AM |
10852 | /* It's possible that we didn't make a PLT entry for this |
10853 | symbol. This happens when statically linking PIC code, | |
10854 | or when using -Bsymbolic. Go find a match if there is a | |
10855 | PLT entry. */ | |
4ce794b7 | 10856 | if (htab->plt != NULL) |
65f38f15 | 10857 | { |
411e1bfb | 10858 | struct plt_entry *ent; |
039b3fef | 10859 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10860 | if (ent->addend == orig_addend |
411e1bfb AM |
10861 | && ent->plt.offset != (bfd_vma) -1) |
10862 | { | |
4ce794b7 AM |
10863 | relocation = (htab->plt->output_section->vma |
10864 | + htab->plt->output_offset | |
411e1bfb AM |
10865 | + ent->plt.offset); |
10866 | unresolved_reloc = FALSE; | |
10867 | } | |
65f38f15 | 10868 | } |
65f38f15 | 10869 | break; |
5bd4f169 | 10870 | |
0b13192e AM |
10871 | case R_PPC64_TOC: |
10872 | /* Relocation value is TOC base. */ | |
10873 | relocation = TOCstart; | |
10874 | if (r_symndx == 0) | |
10875 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10876 | else if (unresolved_reloc) |
10877 | ; | |
10878 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10879 | relocation += htab->stub_group[sec->id].toc_off; |
10880 | else | |
10881 | unresolved_reloc = TRUE; | |
ab96bf03 | 10882 | goto dodyn; |
0b13192e | 10883 | |
5bd4f169 AM |
10884 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10885 | which is the address of the start of the TOC plus 0x8000. | |
10886 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10887 | in this order. */ | |
65f38f15 AM |
10888 | case R_PPC64_TOC16: |
10889 | case R_PPC64_TOC16_LO: | |
10890 | case R_PPC64_TOC16_HI: | |
10891 | case R_PPC64_TOC16_DS: | |
10892 | case R_PPC64_TOC16_LO_DS: | |
10893 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10894 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10895 | break; |
10896 | ||
10897 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10898 | case R_PPC64_SECTOFF: |
10899 | case R_PPC64_SECTOFF_LO: | |
10900 | case R_PPC64_SECTOFF_HI: | |
10901 | case R_PPC64_SECTOFF_DS: | |
10902 | case R_PPC64_SECTOFF_LO_DS: | |
10903 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10904 | if (sec != NULL) |
65f38f15 | 10905 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10906 | break; |
10907 | ||
721956f4 AM |
10908 | case R_PPC64_REL14: |
10909 | case R_PPC64_REL14_BRNTAKEN: | |
10910 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10911 | case R_PPC64_REL24: |
10912 | break; | |
10913 | ||
411e1bfb AM |
10914 | case R_PPC64_TPREL16: |
10915 | case R_PPC64_TPREL16_LO: | |
10916 | case R_PPC64_TPREL16_HI: | |
10917 | case R_PPC64_TPREL16_HA: | |
10918 | case R_PPC64_TPREL16_DS: | |
10919 | case R_PPC64_TPREL16_LO_DS: | |
10920 | case R_PPC64_TPREL16_HIGHER: | |
10921 | case R_PPC64_TPREL16_HIGHERA: | |
10922 | case R_PPC64_TPREL16_HIGHEST: | |
10923 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10924 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10925 | if (info->shared) |
10926 | /* The TPREL16 relocs shouldn't really be used in shared | |
10927 | libs as they will result in DT_TEXTREL being set, but | |
10928 | support them anyway. */ | |
10929 | goto dodyn; | |
10930 | break; | |
10931 | ||
10932 | case R_PPC64_DTPREL16: | |
10933 | case R_PPC64_DTPREL16_LO: | |
10934 | case R_PPC64_DTPREL16_HI: | |
10935 | case R_PPC64_DTPREL16_HA: | |
10936 | case R_PPC64_DTPREL16_DS: | |
10937 | case R_PPC64_DTPREL16_LO_DS: | |
10938 | case R_PPC64_DTPREL16_HIGHER: | |
10939 | case R_PPC64_DTPREL16_HIGHERA: | |
10940 | case R_PPC64_DTPREL16_HIGHEST: | |
10941 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10942 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10943 | break; |
10944 | ||
e515b051 AM |
10945 | case R_PPC64_DTPMOD64: |
10946 | relocation = 1; | |
10947 | addend = 0; | |
10948 | goto dodyn; | |
10949 | ||
411e1bfb | 10950 | case R_PPC64_TPREL64: |
e1918d23 | 10951 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10952 | goto dodyn; |
10953 | ||
10954 | case R_PPC64_DTPREL64: | |
e1918d23 | 10955 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10956 | /* Fall thru */ |
10957 | ||
65f38f15 AM |
10958 | /* Relocations that may need to be propagated if this is a |
10959 | dynamic object. */ | |
04c9666a | 10960 | case R_PPC64_REL30: |
65f38f15 AM |
10961 | case R_PPC64_REL32: |
10962 | case R_PPC64_REL64: | |
10963 | case R_PPC64_ADDR14: | |
10964 | case R_PPC64_ADDR14_BRNTAKEN: | |
10965 | case R_PPC64_ADDR14_BRTAKEN: | |
10966 | case R_PPC64_ADDR16: | |
10967 | case R_PPC64_ADDR16_DS: | |
10968 | case R_PPC64_ADDR16_HA: | |
10969 | case R_PPC64_ADDR16_HI: | |
10970 | case R_PPC64_ADDR16_HIGHER: | |
10971 | case R_PPC64_ADDR16_HIGHERA: | |
10972 | case R_PPC64_ADDR16_HIGHEST: | |
10973 | case R_PPC64_ADDR16_HIGHESTA: | |
10974 | case R_PPC64_ADDR16_LO: | |
10975 | case R_PPC64_ADDR16_LO_DS: | |
10976 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10977 | case R_PPC64_ADDR32: |
10978 | case R_PPC64_ADDR64: | |
10979 | case R_PPC64_UADDR16: | |
10980 | case R_PPC64_UADDR32: | |
10981 | case R_PPC64_UADDR64: | |
411e1bfb | 10982 | dodyn: |
5d1634d7 | 10983 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10984 | break; |
10985 | ||
41bd81ab AM |
10986 | if (NO_OPD_RELOCS && is_opd) |
10987 | break; | |
10988 | ||
65f38f15 | 10989 | if ((info->shared |
4e795f50 | 10990 | && (h == NULL |
039b3fef AM |
10991 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10992 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10993 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10994 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10995 | || (ELIMINATE_COPY_RELOCS |
10996 | && !info->shared | |
65f38f15 | 10997 | && h != NULL |
039b3fef | 10998 | && h->elf.dynindx != -1 |
f5385ebf AM |
10999 | && !h->elf.non_got_ref |
11000 | && h->elf.def_dynamic | |
11001 | && !h->elf.def_regular)) | |
65f38f15 AM |
11002 | { |
11003 | Elf_Internal_Rela outrel; | |
b34976b6 | 11004 | bfd_boolean skip, relocate; |
65f38f15 | 11005 | asection *sreloc; |
947216bf | 11006 | bfd_byte *loc; |
1cf1f670 | 11007 | bfd_vma out_off; |
65f38f15 AM |
11008 | |
11009 | /* When generating a dynamic object, these relocations | |
11010 | are copied into the output file to be resolved at run | |
11011 | time. */ | |
11012 | ||
b34976b6 AM |
11013 | skip = FALSE; |
11014 | relocate = FALSE; | |
65f38f15 | 11015 | |
1cf1f670 AM |
11016 | out_off = _bfd_elf_section_offset (output_bfd, info, |
11017 | input_section, rel->r_offset); | |
11018 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 11019 | skip = TRUE; |
1cf1f670 | 11020 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 11021 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
11022 | out_off += (input_section->output_section->vma |
11023 | + input_section->output_offset); | |
11024 | outrel.r_offset = out_off; | |
411e1bfb | 11025 | outrel.r_addend = rel->r_addend; |
65f38f15 | 11026 | |
1cf1f670 AM |
11027 | /* Optimize unaligned reloc use. */ |
11028 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
11029 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
11030 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
11031 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
11032 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
11033 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
11034 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
11035 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
11036 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
11037 | ||
65f38f15 | 11038 | if (skip) |
0bb2d96a | 11039 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 11040 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
11041 | && !is_opd |
11042 | && r_type != R_PPC64_TOC) | |
039b3fef | 11043 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
11044 | else |
11045 | { | |
41bd81ab AM |
11046 | /* This symbol is local, or marked to become local, |
11047 | or this is an opd section reloc which must point | |
11048 | at a local function. */ | |
65f38f15 | 11049 | outrel.r_addend += relocation; |
e86ce104 | 11050 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 11051 | { |
3fad3c7c | 11052 | if (is_opd && h != NULL) |
afbe61cf AM |
11053 | { |
11054 | /* Lie about opd entries. This case occurs | |
11055 | when building shared libraries and we | |
11056 | reference a function in another shared | |
3fad3c7c AM |
11057 | lib. The same thing happens for a weak |
11058 | definition in an application that's | |
11059 | overridden by a strong definition in a | |
11060 | shared lib. (I believe this is a generic | |
11061 | bug in binutils handling of weak syms.) | |
11062 | In these cases we won't use the opd | |
1e2f5b6e | 11063 | entry in this lib. */ |
b34976b6 | 11064 | unresolved_reloc = FALSE; |
afbe61cf | 11065 | } |
65f38f15 | 11066 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
11067 | |
11068 | /* We need to relocate .opd contents for ld.so. | |
11069 | Prelink also wants simple and consistent rules | |
11070 | for relocs. This make all RELATIVE relocs have | |
11071 | *r_offset equal to r_addend. */ | |
11072 | relocate = TRUE; | |
65f38f15 AM |
11073 | } |
11074 | else | |
11075 | { | |
11076 | long indx = 0; | |
11077 | ||
41bd81ab | 11078 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
11079 | ; |
11080 | else if (sec == NULL || sec->owner == NULL) | |
11081 | { | |
11082 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 11083 | return FALSE; |
65f38f15 AM |
11084 | } |
11085 | else | |
11086 | { | |
11087 | asection *osec; | |
11088 | ||
11089 | osec = sec->output_section; | |
11090 | indx = elf_section_data (osec)->dynindx; | |
11091 | ||
74541ad4 AM |
11092 | if (indx == 0) |
11093 | { | |
11094 | if ((osec->flags & SEC_READONLY) == 0 | |
11095 | && htab->elf.data_index_section != NULL) | |
11096 | osec = htab->elf.data_index_section; | |
11097 | else | |
11098 | osec = htab->elf.text_index_section; | |
11099 | indx = elf_section_data (osec)->dynindx; | |
11100 | } | |
11101 | BFD_ASSERT (indx != 0); | |
11102 | ||
65f38f15 AM |
11103 | /* We are turning this relocation into one |
11104 | against a section symbol, so subtract out | |
11105 | the output section's address but not the | |
11106 | offset of the input section in the output | |
11107 | section. */ | |
11108 | outrel.r_addend -= osec->vma; | |
11109 | } | |
11110 | ||
11111 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
11112 | } | |
11113 | } | |
11114 | ||
11115 | sreloc = elf_section_data (input_section)->sreloc; | |
11116 | if (sreloc == NULL) | |
11117 | abort (); | |
11118 | ||
dfbb6ac9 AM |
11119 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
11120 | >= sreloc->size) | |
11121 | abort (); | |
947216bf AM |
11122 | loc = sreloc->contents; |
11123 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
11124 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
11125 | ||
11126 | /* If this reloc is against an external symbol, it will | |
11127 | be computed at runtime, so there's no need to do | |
81407a69 AM |
11128 | anything now. However, for the sake of prelink ensure |
11129 | that the section contents are a known value. */ | |
65f38f15 | 11130 | if (! relocate) |
81407a69 AM |
11131 | { |
11132 | unresolved_reloc = FALSE; | |
11133 | /* The value chosen here is quite arbitrary as ld.so | |
11134 | ignores section contents except for the special | |
11135 | case of .opd where the contents might be accessed | |
11136 | before relocation. Choose zero, as that won't | |
11137 | cause reloc overflow. */ | |
11138 | relocation = 0; | |
11139 | addend = 0; | |
11140 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11141 | to improve backward compatibility with older | |
11142 | versions of ld. */ | |
11143 | if (r_type == R_PPC64_ADDR64) | |
11144 | addend = outrel.r_addend; | |
11145 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11146 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11147 | addend = (input_section->output_section->vma |
11148 | + input_section->output_offset | |
11149 | + rel->r_offset); | |
81407a69 | 11150 | } |
65f38f15 | 11151 | } |
5bd4f169 AM |
11152 | break; |
11153 | ||
65f38f15 AM |
11154 | case R_PPC64_COPY: |
11155 | case R_PPC64_GLOB_DAT: | |
11156 | case R_PPC64_JMP_SLOT: | |
11157 | case R_PPC64_RELATIVE: | |
11158 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11159 | files. */ | |
ae9a127f | 11160 | /* Fall through. */ |
65f38f15 AM |
11161 | |
11162 | case R_PPC64_PLTGOT16: | |
11163 | case R_PPC64_PLTGOT16_DS: | |
11164 | case R_PPC64_PLTGOT16_HA: | |
11165 | case R_PPC64_PLTGOT16_HI: | |
11166 | case R_PPC64_PLTGOT16_LO: | |
11167 | case R_PPC64_PLTGOT16_LO_DS: | |
11168 | case R_PPC64_PLTREL32: | |
11169 | case R_PPC64_PLTREL64: | |
11170 | /* These ones haven't been implemented yet. */ | |
11171 | ||
11172 | (*_bfd_error_handler) | |
d003868e AM |
11173 | (_("%B: relocation %s is not supported for symbol %s."), |
11174 | input_bfd, | |
4ce794b7 | 11175 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11176 | |
11177 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11178 | ret = FALSE; |
5bd4f169 | 11179 | continue; |
65f38f15 | 11180 | } |
5bd4f169 | 11181 | |
65f38f15 AM |
11182 | /* Do any further special processing. */ |
11183 | switch (r_type) | |
11184 | { | |
11185 | default: | |
11186 | break; | |
11187 | ||
11188 | case R_PPC64_ADDR16_HA: | |
11189 | case R_PPC64_ADDR16_HIGHERA: | |
11190 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11191 | case R_PPC64_TOC16_HA: |
11192 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11193 | case R_PPC64_TPREL16_HA: |
11194 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11195 | case R_PPC64_TPREL16_HIGHER: |
11196 | case R_PPC64_TPREL16_HIGHERA: | |
11197 | case R_PPC64_TPREL16_HIGHEST: | |
11198 | case R_PPC64_TPREL16_HIGHESTA: | |
11199 | case R_PPC64_DTPREL16_HIGHER: | |
11200 | case R_PPC64_DTPREL16_HIGHERA: | |
11201 | case R_PPC64_DTPREL16_HIGHEST: | |
11202 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11203 | /* It's just possible that this symbol is a weak symbol |
11204 | that's not actually defined anywhere. In that case, | |
11205 | 'sec' would be NULL, and we should leave the symbol | |
11206 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11207 | if (sec == NULL) |
11208 | break; | |
11209 | /* Fall thru */ | |
11210 | ||
11211 | case R_PPC64_GOT16_HA: | |
11212 | case R_PPC64_PLTGOT16_HA: | |
11213 | case R_PPC64_PLT16_HA: | |
11214 | case R_PPC64_GOT_TLSGD16_HA: | |
11215 | case R_PPC64_GOT_TLSLD16_HA: | |
11216 | case R_PPC64_GOT_TPREL16_HA: | |
11217 | case R_PPC64_GOT_DTPREL16_HA: | |
11218 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11219 | Bits 0:15 are not used. */ | |
11220 | addend += 0x8000; | |
65f38f15 AM |
11221 | break; |
11222 | ||
11223 | case R_PPC64_ADDR16_DS: | |
11224 | case R_PPC64_ADDR16_LO_DS: | |
11225 | case R_PPC64_GOT16_DS: | |
11226 | case R_PPC64_GOT16_LO_DS: | |
11227 | case R_PPC64_PLT16_LO_DS: | |
11228 | case R_PPC64_SECTOFF_DS: | |
11229 | case R_PPC64_SECTOFF_LO_DS: | |
11230 | case R_PPC64_TOC16_DS: | |
11231 | case R_PPC64_TOC16_LO_DS: | |
11232 | case R_PPC64_PLTGOT16_DS: | |
11233 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11234 | case R_PPC64_GOT_TPREL16_DS: |
11235 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11236 | case R_PPC64_GOT_DTPREL16_DS: | |
11237 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11238 | case R_PPC64_TPREL16_DS: | |
11239 | case R_PPC64_TPREL16_LO_DS: | |
11240 | case R_PPC64_DTPREL16_DS: | |
11241 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11242 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11243 | mask = 3; | |
11244 | /* If this reloc is against an lq insn, then the value must be | |
11245 | a multiple of 16. This is somewhat of a hack, but the | |
11246 | "correct" way to do this by defining _DQ forms of all the | |
11247 | _DS relocs bloats all reloc switches in this file. It | |
11248 | doesn't seem to make much sense to use any of these relocs | |
11249 | in data, so testing the insn should be safe. */ | |
494dac0c | 11250 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11251 | mask = 15; |
11252 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11253 | { |
11254 | (*_bfd_error_handler) | |
d003868e AM |
11255 | (_("%B: error: relocation %s not a multiple of %d"), |
11256 | input_bfd, | |
4ce794b7 | 11257 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11258 | mask + 1); |
65f38f15 | 11259 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11260 | ret = FALSE; |
65f38f15 AM |
11261 | continue; |
11262 | } | |
11263 | break; | |
5bd4f169 AM |
11264 | } |
11265 | ||
239e1f3a AM |
11266 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11267 | because such sections are not SEC_ALLOC and thus ld.so will | |
11268 | not process them. */ | |
65f38f15 | 11269 | if (unresolved_reloc |
239e1f3a | 11270 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11271 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11272 | { |
11273 | (*_bfd_error_handler) | |
d003868e AM |
11274 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11275 | input_bfd, | |
11276 | input_section, | |
9c07fe7c | 11277 | (long) rel->r_offset, |
7b609f53 | 11278 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11279 | h->elf.root.root.string); |
b34976b6 | 11280 | ret = FALSE; |
9c07fe7c | 11281 | } |
5bd4f169 | 11282 | |
65f38f15 | 11283 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11284 | input_bfd, |
11285 | input_section, | |
11286 | contents, | |
411e1bfb | 11287 | rel->r_offset, |
5bd4f169 AM |
11288 | relocation, |
11289 | addend); | |
11290 | ||
ef60b7ff | 11291 | if (r != bfd_reloc_ok) |
5bd4f169 | 11292 | { |
cd27b276 AM |
11293 | if (sym_name == NULL) |
11294 | sym_name = "(null)"; | |
11295 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11296 | { |
cd27b276 AM |
11297 | if (warned) |
11298 | continue; | |
11299 | if (h != NULL | |
039b3fef | 11300 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11301 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11302 | { |
11303 | /* Assume this is a call protected by other code that | |
11304 | detects the symbol is undefined. If this is the case, | |
11305 | we can safely ignore the overflow. If not, the | |
11306 | program is hosed anyway, and a little warning isn't | |
11307 | going to help. */ | |
11308 | ||
11309 | continue; | |
11310 | } | |
11311 | ||
ef60b7ff | 11312 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11313 | (info, (h ? &h->elf.root : NULL), sym_name, |
11314 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11315 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11316 | return FALSE; |
ef60b7ff AM |
11317 | } |
11318 | else | |
11319 | { | |
11320 | (*_bfd_error_handler) | |
d003868e AM |
11321 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11322 | input_bfd, | |
11323 | input_section, | |
7b609f53 | 11324 | (long) rel->r_offset, |
4ce794b7 | 11325 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11326 | sym_name, |
11327 | (int) r); | |
b34976b6 | 11328 | ret = FALSE; |
ef60b7ff | 11329 | } |
5bd4f169 | 11330 | } |
5bd4f169 AM |
11331 | } |
11332 | ||
645ea6a9 AM |
11333 | /* If we're emitting relocations, then shortly after this function |
11334 | returns, reloc offsets and addends for this section will be | |
11335 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11336 | file rather than the input. Save a copy of the relocs for |
11337 | opd_entry_value. */ | |
4cc603a5 | 11338 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11339 | { |
11340 | bfd_size_type amt; | |
11341 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11342 | rel = bfd_alloc (input_bfd, amt); | |
11343 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11344 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11345 | if (rel == NULL) | |
11346 | return FALSE; | |
11347 | memcpy (rel, relocs, amt); | |
11348 | } | |
5bd4f169 AM |
11349 | return ret; |
11350 | } | |
11351 | ||
754021d0 AM |
11352 | /* Adjust the value of any local symbols in opd sections. */ |
11353 | ||
11354 | static bfd_boolean | |
11355 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11356 | const char *name ATTRIBUTE_UNUSED, | |
11357 | Elf_Internal_Sym *elfsym, | |
11358 | asection *input_sec, | |
11359 | struct elf_link_hash_entry *h) | |
11360 | { | |
4025353c | 11361 | long *opd_adjust, adjust; |
754021d0 AM |
11362 | bfd_vma value; |
11363 | ||
4025353c AM |
11364 | if (h != NULL) |
11365 | return TRUE; | |
11366 | ||
11367 | opd_adjust = get_opd_info (input_sec); | |
11368 | if (opd_adjust == NULL) | |
754021d0 AM |
11369 | return TRUE; |
11370 | ||
11371 | value = elfsym->st_value - input_sec->output_offset; | |
11372 | if (!info->relocatable) | |
11373 | value -= input_sec->output_section->vma; | |
11374 | ||
3f764659 | 11375 | adjust = opd_adjust[value / 8]; |
4025353c AM |
11376 | if (adjust == -1) |
11377 | elfsym->st_value = 0; | |
11378 | else | |
11379 | elfsym->st_value += adjust; | |
754021d0 AM |
11380 | return TRUE; |
11381 | } | |
11382 | ||
5bd4f169 AM |
11383 | /* Finish up dynamic symbol handling. We set the contents of various |
11384 | dynamic sections here. */ | |
11385 | ||
b34976b6 | 11386 | static bfd_boolean |
4ce794b7 AM |
11387 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11388 | struct bfd_link_info *info, | |
11389 | struct elf_link_hash_entry *h, | |
11390 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11391 | { |
65f38f15 | 11392 | struct ppc_link_hash_table *htab; |
8387904d AM |
11393 | struct plt_entry *ent; |
11394 | Elf_Internal_Rela rela; | |
11395 | bfd_byte *loc; | |
5bd4f169 | 11396 | |
65f38f15 | 11397 | htab = ppc_hash_table (info); |
5bd4f169 | 11398 | |
8387904d AM |
11399 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11400 | if (ent->plt.offset != (bfd_vma) -1) | |
11401 | { | |
11402 | /* This symbol has an entry in the procedure linkage | |
11403 | table. Set it up. */ | |
11404 | ||
11405 | if (htab->plt == NULL | |
11406 | || htab->relplt == NULL | |
11407 | || htab->glink == NULL) | |
11408 | abort (); | |
11409 | ||
11410 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11411 | fill in the PLT entry. */ | |
11412 | rela.r_offset = (htab->plt->output_section->vma | |
11413 | + htab->plt->output_offset | |
11414 | + ent->plt.offset); | |
11415 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11416 | rela.r_addend = ent->addend; | |
11417 | ||
11418 | loc = htab->relplt->contents; | |
11419 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11420 | * sizeof (Elf64_External_Rela)); | |
11421 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11422 | } | |
5bd4f169 | 11423 | |
f5385ebf | 11424 | if (h->needs_copy) |
5bd4f169 | 11425 | { |
5bd4f169 | 11426 | Elf_Internal_Rela rela; |
947216bf | 11427 | bfd_byte *loc; |
5bd4f169 | 11428 | |
65f38f15 | 11429 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11430 | |
65f38f15 AM |
11431 | if (h->dynindx == -1 |
11432 | || (h->root.type != bfd_link_hash_defined | |
11433 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11434 | || htab->relbss == NULL) |
65f38f15 | 11435 | abort (); |
5bd4f169 AM |
11436 | |
11437 | rela.r_offset = (h->root.u.def.value | |
11438 | + h->root.u.def.section->output_section->vma | |
11439 | + h->root.u.def.section->output_offset); | |
11440 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11441 | rela.r_addend = 0; | |
4ce794b7 AM |
11442 | loc = htab->relbss->contents; |
11443 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11444 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11445 | } |
11446 | ||
5bd4f169 AM |
11447 | /* Mark some specially defined symbols as absolute. */ |
11448 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11449 | sym->st_shndx = SHN_ABS; | |
11450 | ||
b34976b6 | 11451 | return TRUE; |
5bd4f169 AM |
11452 | } |
11453 | ||
65f38f15 AM |
11454 | /* Used to decide how to sort relocs in an optimal manner for the |
11455 | dynamic linker, before writing them out. */ | |
11456 | ||
11457 | static enum elf_reloc_type_class | |
4ce794b7 | 11458 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11459 | { |
04c9666a | 11460 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11461 | |
4ce794b7 | 11462 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11463 | switch (r_type) |
65f38f15 AM |
11464 | { |
11465 | case R_PPC64_RELATIVE: | |
11466 | return reloc_class_relative; | |
11467 | case R_PPC64_JMP_SLOT: | |
11468 | return reloc_class_plt; | |
11469 | case R_PPC64_COPY: | |
11470 | return reloc_class_copy; | |
11471 | default: | |
11472 | return reloc_class_normal; | |
11473 | } | |
11474 | } | |
11475 | ||
5bd4f169 AM |
11476 | /* Finish up the dynamic sections. */ |
11477 | ||
b34976b6 | 11478 | static bfd_boolean |
4ce794b7 AM |
11479 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11480 | struct bfd_link_info *info) | |
5bd4f169 | 11481 | { |
65f38f15 AM |
11482 | struct ppc_link_hash_table *htab; |
11483 | bfd *dynobj; | |
5bd4f169 | 11484 | asection *sdyn; |
5bd4f169 | 11485 | |
65f38f15 AM |
11486 | htab = ppc_hash_table (info); |
11487 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11488 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11489 | ||
65f38f15 | 11490 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11491 | { |
5bd4f169 AM |
11492 | Elf64_External_Dyn *dyncon, *dynconend; |
11493 | ||
4ce794b7 | 11494 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11495 | abort (); |
5bd4f169 AM |
11496 | |
11497 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11498 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11499 | for (; dyncon < dynconend; dyncon++) |
11500 | { | |
11501 | Elf_Internal_Dyn dyn; | |
19397422 | 11502 | asection *s; |
5bd4f169 AM |
11503 | |
11504 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11505 | ||
11506 | switch (dyn.d_tag) | |
11507 | { | |
65f38f15 AM |
11508 | default: |
11509 | continue; | |
5bd4f169 | 11510 | |
5d1634d7 | 11511 | case DT_PPC64_GLINK: |
4ce794b7 | 11512 | s = htab->glink; |
6348e046 | 11513 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11514 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11515 | of glink rather than the first entry point, which is | |
11516 | what ld.so needs, and now have a bigger stub to | |
11517 | support automatic multiple TOCs. */ | |
11518 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11519 | break; |
11520 | ||
19397422 AM |
11521 | case DT_PPC64_OPD: |
11522 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11523 | if (s == NULL) |
11524 | continue; | |
11525 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11526 | break; |
11527 | ||
11528 | case DT_PPC64_OPDSZ: | |
11529 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11530 | if (s == NULL) |
11531 | continue; | |
eea6121a | 11532 | dyn.d_un.d_val = s->size; |
19397422 AM |
11533 | break; |
11534 | ||
65f38f15 | 11535 | case DT_PLTGOT: |
4ce794b7 | 11536 | s = htab->plt; |
6348e046 | 11537 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11538 | break; |
11539 | ||
11540 | case DT_JMPREL: | |
4ce794b7 | 11541 | s = htab->relplt; |
6348e046 | 11542 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11543 | break; |
5bd4f169 | 11544 | |
65f38f15 | 11545 | case DT_PLTRELSZ: |
eea6121a | 11546 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11547 | break; |
11548 | ||
11549 | case DT_RELASZ: | |
11550 | /* Don't count procedure linkage table relocs in the | |
11551 | overall reloc count. */ | |
4ce794b7 | 11552 | s = htab->relplt; |
6348e046 AM |
11553 | if (s == NULL) |
11554 | continue; | |
eea6121a | 11555 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11556 | break; |
11557 | ||
11558 | case DT_RELA: | |
11559 | /* We may not be using the standard ELF linker script. | |
11560 | If .rela.plt is the first .rela section, we adjust | |
11561 | DT_RELA to not include it. */ | |
4ce794b7 | 11562 | s = htab->relplt; |
6348e046 AM |
11563 | if (s == NULL) |
11564 | continue; | |
11565 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11566 | continue; | |
eea6121a | 11567 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11568 | break; |
5bd4f169 | 11569 | } |
5bd4f169 | 11570 | |
65f38f15 | 11571 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11572 | } |
5bd4f169 AM |
11573 | } |
11574 | ||
eea6121a | 11575 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11576 | { |
11577 | /* Fill in the first entry in the global offset table. | |
11578 | We use it to hold the link-time TOCbase. */ | |
11579 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11580 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11581 | htab->got->contents); |
5d1634d7 AM |
11582 | |
11583 | /* Set .got entry size. */ | |
4ce794b7 | 11584 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11585 | } |
11586 | ||
eea6121a | 11587 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11588 | { |
11589 | /* Set .plt entry size. */ | |
4ce794b7 | 11590 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11591 | = PLT_ENTRY_SIZE; |
11592 | } | |
11593 | ||
84f5d08e AM |
11594 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
11595 | brlt ourselves if emitrelocations. */ | |
11596 | if (htab->brlt != NULL | |
11597 | && htab->brlt->reloc_count != 0 | |
11598 | && !_bfd_elf_link_output_relocs (output_bfd, | |
11599 | htab->brlt, | |
11600 | &elf_section_data (htab->brlt)->rel_hdr, | |
11601 | elf_section_data (htab->brlt)->relocs, | |
11602 | NULL)) | |
11603 | return FALSE; | |
11604 | ||
e717da7e | 11605 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11606 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11607 | bfd. */ | |
e717da7e AM |
11608 | while ((dynobj = dynobj->link_next) != NULL) |
11609 | { | |
11610 | asection *s; | |
7b53ace3 | 11611 | |
ee75fd95 | 11612 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11613 | continue; |
11614 | ||
e717da7e AM |
11615 | s = ppc64_elf_tdata (dynobj)->got; |
11616 | if (s != NULL | |
eea6121a | 11617 | && s->size != 0 |
e717da7e AM |
11618 | && s->output_section != bfd_abs_section_ptr |
11619 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11620 | s->contents, s->output_offset, | |
eea6121a | 11621 | s->size)) |
e717da7e AM |
11622 | return FALSE; |
11623 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11624 | if (s != NULL | |
eea6121a | 11625 | && s->size != 0 |
e717da7e AM |
11626 | && s->output_section != bfd_abs_section_ptr |
11627 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11628 | s->contents, s->output_offset, | |
eea6121a | 11629 | s->size)) |
e717da7e AM |
11630 | return FALSE; |
11631 | } | |
f6c52c13 | 11632 | |
b34976b6 | 11633 | return TRUE; |
5bd4f169 AM |
11634 | } |
11635 | ||
5bd4f169 | 11636 | #include "elf64-target.h" |