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 | |
134 | insert an addis to adjust r12. */ | |
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) */ | |
139 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
140 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
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 */ |
ad8e1ba5 AM |
146 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
147 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
148 | ||
149 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
150 | ||
ee4bf8d2 | 151 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 152 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
153 | /* 0: */ |
154 | /* .quad plt0-1f */ | |
155 | /* __glink: */ | |
156 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
157 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
158 | /* 1: */ | |
159 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
160 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
161 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
162 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
163 | /* ld %11,0(%12) */ | |
164 | /* ld %2,8(%12) */ | |
165 | /* mtctr %11 */ | |
166 | /* ld %11,16(%12) */ | |
167 | /* bctr */ | |
5d1634d7 AM |
168 | |
169 | /* Pad with this. */ | |
170 | #define NOP 0x60000000 | |
171 | ||
721956f4 AM |
172 | /* Some other nops. */ |
173 | #define CROR_151515 0x4def7b82 | |
174 | #define CROR_313131 0x4ffffb82 | |
175 | ||
cedb70c5 | 176 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
177 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
178 | #define B_DOT 0x48000000 /* b . */ | |
179 | ||
180 | /* After that, we need two instructions to load the index, followed by | |
181 | a branch. */ | |
182 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 183 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 184 | |
deb0e272 AM |
185 | /* Instructions used by the save and restore reg functions. */ |
186 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
187 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
188 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
189 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
190 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
191 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
192 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
193 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
194 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
195 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
196 | #define BLR 0x4e800020 /* blr */ |
197 | ||
41bd81ab AM |
198 | /* Since .opd is an array of descriptors and each entry will end up |
199 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
200 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 201 | relocate .opd without reloc entries. */ |
41bd81ab AM |
202 | #ifndef NO_OPD_RELOCS |
203 | #define NO_OPD_RELOCS 0 | |
204 | #endif | |
5bd4f169 | 205 | \f |
f5e87a1d | 206 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 207 | |
5bd4f169 | 208 | /* Relocation HOWTO's. */ |
04c9666a | 209 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
210 | |
211 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
212 | /* This reloc does nothing. */ | |
213 | HOWTO (R_PPC64_NONE, /* type */ | |
214 | 0, /* rightshift */ | |
411e1bfb AM |
215 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
216 | 32, /* bitsize */ | |
b34976b6 | 217 | FALSE, /* pc_relative */ |
5bd4f169 | 218 | 0, /* bitpos */ |
f5e87a1d | 219 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
220 | bfd_elf_generic_reloc, /* special_function */ |
221 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 222 | FALSE, /* partial_inplace */ |
d006db6c | 223 | 0, /* src_mask */ |
5bd4f169 | 224 | 0, /* dst_mask */ |
b34976b6 | 225 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
226 | |
227 | /* A standard 32 bit relocation. */ | |
228 | HOWTO (R_PPC64_ADDR32, /* type */ | |
229 | 0, /* rightshift */ | |
230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
231 | 32, /* bitsize */ | |
b34976b6 | 232 | FALSE, /* pc_relative */ |
5bd4f169 AM |
233 | 0, /* bitpos */ |
234 | complain_overflow_bitfield, /* complain_on_overflow */ | |
235 | bfd_elf_generic_reloc, /* special_function */ | |
236 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 237 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
238 | 0, /* src_mask */ |
239 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 240 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
241 | |
242 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
243 | FIXME: we don't check that, we just clear them. */ | |
244 | HOWTO (R_PPC64_ADDR24, /* type */ | |
245 | 0, /* rightshift */ | |
246 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
247 | 26, /* bitsize */ | |
b34976b6 | 248 | FALSE, /* pc_relative */ |
5bd4f169 AM |
249 | 0, /* bitpos */ |
250 | complain_overflow_bitfield, /* complain_on_overflow */ | |
251 | bfd_elf_generic_reloc, /* special_function */ | |
252 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 253 | FALSE, /* partial_inplace */ |
d006db6c | 254 | 0, /* src_mask */ |
f5e87a1d | 255 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 256 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
257 | |
258 | /* A standard 16 bit relocation. */ | |
259 | HOWTO (R_PPC64_ADDR16, /* type */ | |
260 | 0, /* rightshift */ | |
261 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
262 | 16, /* bitsize */ | |
b34976b6 | 263 | FALSE, /* pc_relative */ |
5bd4f169 AM |
264 | 0, /* bitpos */ |
265 | complain_overflow_bitfield, /* complain_on_overflow */ | |
266 | bfd_elf_generic_reloc, /* special_function */ | |
267 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 268 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
269 | 0, /* src_mask */ |
270 | 0xffff, /* dst_mask */ | |
b34976b6 | 271 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
272 | |
273 | /* A 16 bit relocation without overflow. */ | |
274 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
275 | 0, /* rightshift */ | |
276 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
277 | 16, /* bitsize */ | |
b34976b6 | 278 | FALSE, /* pc_relative */ |
5bd4f169 AM |
279 | 0, /* bitpos */ |
280 | complain_overflow_dont,/* complain_on_overflow */ | |
281 | bfd_elf_generic_reloc, /* special_function */ | |
282 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 283 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
284 | 0, /* src_mask */ |
285 | 0xffff, /* dst_mask */ | |
b34976b6 | 286 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
287 | |
288 | /* Bits 16-31 of an address. */ | |
289 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
290 | 16, /* rightshift */ | |
291 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
292 | 16, /* bitsize */ | |
b34976b6 | 293 | FALSE, /* pc_relative */ |
5bd4f169 AM |
294 | 0, /* bitpos */ |
295 | complain_overflow_dont, /* complain_on_overflow */ | |
296 | bfd_elf_generic_reloc, /* special_function */ | |
297 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 298 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
299 | 0, /* src_mask */ |
300 | 0xffff, /* dst_mask */ | |
b34976b6 | 301 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
302 | |
303 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
304 | bits, treated as a signed number, is negative. */ | |
305 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
306 | 16, /* rightshift */ | |
307 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 16, /* bitsize */ | |
b34976b6 | 309 | FALSE, /* pc_relative */ |
5bd4f169 AM |
310 | 0, /* bitpos */ |
311 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 312 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 313 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 314 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
315 | 0, /* src_mask */ |
316 | 0xffff, /* dst_mask */ | |
b34976b6 | 317 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
318 | |
319 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
320 | FIXME: we don't check that, we just clear them. */ | |
321 | HOWTO (R_PPC64_ADDR14, /* type */ | |
322 | 0, /* rightshift */ | |
323 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
324 | 16, /* bitsize */ | |
b34976b6 | 325 | FALSE, /* pc_relative */ |
5bd4f169 AM |
326 | 0, /* bitpos */ |
327 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 328 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 329 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 330 | FALSE, /* partial_inplace */ |
d006db6c | 331 | 0, /* src_mask */ |
f5e87a1d | 332 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 333 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
334 | |
335 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
336 | indicate that the branch is expected to be taken. The lower two | |
337 | bits must be zero. */ | |
338 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
b34976b6 | 342 | FALSE, /* pc_relative */ |
5bd4f169 AM |
343 | 0, /* bitpos */ |
344 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 345 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 346 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 347 | FALSE, /* partial_inplace */ |
d006db6c | 348 | 0, /* src_mask */ |
f5e87a1d | 349 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 350 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
351 | |
352 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
353 | indicate that the branch is not expected to be taken. The lower | |
354 | two bits must be zero. */ | |
355 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
356 | 0, /* rightshift */ | |
357 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
358 | 16, /* bitsize */ | |
b34976b6 | 359 | FALSE, /* pc_relative */ |
5bd4f169 AM |
360 | 0, /* bitpos */ |
361 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 362 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 363 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 364 | FALSE, /* partial_inplace */ |
d006db6c | 365 | 0, /* src_mask */ |
f5e87a1d | 366 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 367 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
368 | |
369 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
370 | HOWTO (R_PPC64_REL24, /* type */ | |
371 | 0, /* rightshift */ | |
372 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
373 | 26, /* bitsize */ | |
b34976b6 | 374 | TRUE, /* pc_relative */ |
5bd4f169 AM |
375 | 0, /* bitpos */ |
376 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 377 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 378 | "R_PPC64_REL24", /* name */ |
b34976b6 | 379 | FALSE, /* partial_inplace */ |
d006db6c | 380 | 0, /* src_mask */ |
f5e87a1d | 381 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 382 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
383 | |
384 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
385 | HOWTO (R_PPC64_REL14, /* type */ | |
386 | 0, /* rightshift */ | |
387 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
388 | 16, /* bitsize */ | |
b34976b6 | 389 | TRUE, /* pc_relative */ |
5bd4f169 AM |
390 | 0, /* bitpos */ |
391 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 392 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 393 | "R_PPC64_REL14", /* name */ |
b34976b6 | 394 | FALSE, /* partial_inplace */ |
d006db6c | 395 | 0, /* src_mask */ |
f5e87a1d | 396 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 397 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
398 | |
399 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
400 | the branch is expected to be taken. The lower two bits must be | |
401 | zero. */ | |
402 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
403 | 0, /* rightshift */ | |
404 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
405 | 16, /* bitsize */ | |
b34976b6 | 406 | TRUE, /* pc_relative */ |
5bd4f169 AM |
407 | 0, /* bitpos */ |
408 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 409 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 410 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 411 | FALSE, /* partial_inplace */ |
d006db6c | 412 | 0, /* src_mask */ |
f5e87a1d | 413 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 414 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
415 | |
416 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
417 | the branch is not expected to be taken. The lower two bits must | |
418 | be zero. */ | |
419 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
420 | 0, /* rightshift */ | |
421 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 16, /* bitsize */ | |
b34976b6 | 423 | TRUE, /* pc_relative */ |
5bd4f169 AM |
424 | 0, /* bitpos */ |
425 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 426 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 427 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 428 | FALSE, /* partial_inplace */ |
d006db6c | 429 | 0, /* src_mask */ |
f5e87a1d | 430 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 431 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
432 | |
433 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
434 | symbol. */ | |
435 | HOWTO (R_PPC64_GOT16, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 16, /* bitsize */ | |
b34976b6 | 439 | FALSE, /* pc_relative */ |
5bd4f169 AM |
440 | 0, /* bitpos */ |
441 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 442 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 443 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
445 | 0, /* src_mask */ |
446 | 0xffff, /* dst_mask */ | |
b34976b6 | 447 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
448 | |
449 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
450 | the symbol. */ | |
451 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
452 | 0, /* rightshift */ | |
453 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
454 | 16, /* bitsize */ | |
b34976b6 | 455 | FALSE, /* pc_relative */ |
5bd4f169 AM |
456 | 0, /* bitpos */ |
457 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 458 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 459 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 460 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
461 | 0, /* src_mask */ |
462 | 0xffff, /* dst_mask */ | |
b34976b6 | 463 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
464 | |
465 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
466 | the symbol. */ | |
467 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
468 | 16, /* rightshift */ | |
469 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 16, /* bitsize */ | |
b34976b6 | 471 | FALSE, /* pc_relative */ |
5bd4f169 AM |
472 | 0, /* bitpos */ |
473 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 474 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 475 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 476 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
477 | 0, /* src_mask */ |
478 | 0xffff, /* dst_mask */ | |
b34976b6 | 479 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
480 | |
481 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
482 | the symbol. */ | |
483 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
484 | 16, /* rightshift */ | |
485 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
486 | 16, /* bitsize */ | |
b34976b6 | 487 | FALSE, /* pc_relative */ |
5bd4f169 AM |
488 | 0, /* bitpos */ |
489 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 490 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 491 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 492 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
493 | 0, /* src_mask */ |
494 | 0xffff, /* dst_mask */ | |
b34976b6 | 495 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
496 | |
497 | /* This is used only by the dynamic linker. The symbol should exist | |
498 | both in the object being run and in some shared library. The | |
499 | dynamic linker copies the data addressed by the symbol from the | |
500 | shared library into the object, because the object being | |
501 | run has to have the data at some particular address. */ | |
502 | HOWTO (R_PPC64_COPY, /* type */ | |
503 | 0, /* rightshift */ | |
f5e87a1d AM |
504 | 0, /* this one is variable size */ |
505 | 0, /* bitsize */ | |
b34976b6 | 506 | FALSE, /* pc_relative */ |
5bd4f169 | 507 | 0, /* bitpos */ |
f5e87a1d AM |
508 | complain_overflow_dont, /* complain_on_overflow */ |
509 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 510 | "R_PPC64_COPY", /* name */ |
b34976b6 | 511 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
512 | 0, /* src_mask */ |
513 | 0, /* dst_mask */ | |
b34976b6 | 514 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
515 | |
516 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
517 | entries. */ | |
518 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
519 | 0, /* rightshift */ | |
520 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
521 | 64, /* bitsize */ | |
b34976b6 | 522 | FALSE, /* pc_relative */ |
5bd4f169 AM |
523 | 0, /* bitpos */ |
524 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 525 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 526 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 527 | FALSE, /* partial_inplace */ |
5bd4f169 | 528 | 0, /* src_mask */ |
f5e87a1d | 529 | ONES (64), /* dst_mask */ |
b34976b6 | 530 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
531 | |
532 | /* Created by the link editor. Marks a procedure linkage table | |
533 | entry for a symbol. */ | |
534 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
535 | 0, /* rightshift */ | |
536 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
537 | 0, /* bitsize */ | |
b34976b6 | 538 | FALSE, /* pc_relative */ |
5bd4f169 AM |
539 | 0, /* bitpos */ |
540 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 541 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 542 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 543 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
544 | 0, /* src_mask */ |
545 | 0, /* dst_mask */ | |
b34976b6 | 546 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
547 | |
548 | /* Used only by the dynamic linker. When the object is run, this | |
549 | doubleword64 is set to the load address of the object, plus the | |
550 | addend. */ | |
551 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
552 | 0, /* rightshift */ | |
553 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
554 | 64, /* bitsize */ | |
b34976b6 | 555 | FALSE, /* pc_relative */ |
5bd4f169 AM |
556 | 0, /* bitpos */ |
557 | complain_overflow_dont, /* complain_on_overflow */ | |
558 | bfd_elf_generic_reloc, /* special_function */ | |
559 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 560 | FALSE, /* partial_inplace */ |
5bd4f169 | 561 | 0, /* src_mask */ |
f5e87a1d | 562 | ONES (64), /* dst_mask */ |
b34976b6 | 563 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
564 | |
565 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
566 | HOWTO (R_PPC64_UADDR32, /* type */ | |
567 | 0, /* rightshift */ | |
568 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
569 | 32, /* bitsize */ | |
b34976b6 | 570 | FALSE, /* pc_relative */ |
5bd4f169 AM |
571 | 0, /* bitpos */ |
572 | complain_overflow_bitfield, /* complain_on_overflow */ | |
573 | bfd_elf_generic_reloc, /* special_function */ | |
574 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 575 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
576 | 0, /* src_mask */ |
577 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 578 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
579 | |
580 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
581 | HOWTO (R_PPC64_UADDR16, /* type */ | |
582 | 0, /* rightshift */ | |
583 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
584 | 16, /* bitsize */ | |
b34976b6 | 585 | FALSE, /* pc_relative */ |
5bd4f169 AM |
586 | 0, /* bitpos */ |
587 | complain_overflow_bitfield, /* complain_on_overflow */ | |
588 | bfd_elf_generic_reloc, /* special_function */ | |
589 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 590 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
591 | 0, /* src_mask */ |
592 | 0xffff, /* dst_mask */ | |
b34976b6 | 593 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
594 | |
595 | /* 32-bit PC relative. */ | |
596 | HOWTO (R_PPC64_REL32, /* type */ | |
597 | 0, /* rightshift */ | |
598 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
599 | 32, /* bitsize */ | |
b34976b6 | 600 | TRUE, /* pc_relative */ |
5bd4f169 | 601 | 0, /* bitpos */ |
cedb70c5 | 602 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
603 | complain_overflow_signed, /* complain_on_overflow */ |
604 | bfd_elf_generic_reloc, /* special_function */ | |
605 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 606 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
607 | 0, /* src_mask */ |
608 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 609 | TRUE), /* pcrel_offset */ |
5bd4f169 | 610 | |
10ed1bba | 611 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
612 | HOWTO (R_PPC64_PLT32, /* type */ |
613 | 0, /* rightshift */ | |
614 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
615 | 32, /* bitsize */ | |
b34976b6 | 616 | FALSE, /* pc_relative */ |
5bd4f169 AM |
617 | 0, /* bitpos */ |
618 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 619 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 620 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 621 | FALSE, /* partial_inplace */ |
5bd4f169 | 622 | 0, /* src_mask */ |
f5e87a1d | 623 | 0xffffffff, /* dst_mask */ |
b34976b6 | 624 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
625 | |
626 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
627 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
628 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
629 | 0, /* rightshift */ | |
630 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
631 | 32, /* bitsize */ | |
b34976b6 | 632 | TRUE, /* pc_relative */ |
5bd4f169 AM |
633 | 0, /* bitpos */ |
634 | complain_overflow_signed, /* complain_on_overflow */ | |
635 | bfd_elf_generic_reloc, /* special_function */ | |
636 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 637 | FALSE, /* partial_inplace */ |
5bd4f169 | 638 | 0, /* src_mask */ |
f5e87a1d | 639 | 0xffffffff, /* dst_mask */ |
b34976b6 | 640 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
641 | |
642 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
643 | the symbol. */ | |
644 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
645 | 0, /* rightshift */ | |
646 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
647 | 16, /* bitsize */ | |
b34976b6 | 648 | FALSE, /* pc_relative */ |
5bd4f169 AM |
649 | 0, /* bitpos */ |
650 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 651 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 652 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 653 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
654 | 0, /* src_mask */ |
655 | 0xffff, /* dst_mask */ | |
b34976b6 | 656 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
657 | |
658 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
659 | the symbol. */ | |
660 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
661 | 16, /* rightshift */ | |
662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
663 | 16, /* bitsize */ | |
b34976b6 | 664 | FALSE, /* pc_relative */ |
5bd4f169 AM |
665 | 0, /* bitpos */ |
666 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 667 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 668 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 669 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
670 | 0, /* src_mask */ |
671 | 0xffff, /* dst_mask */ | |
b34976b6 | 672 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
673 | |
674 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
675 | the symbol. */ | |
676 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
677 | 16, /* rightshift */ | |
678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
679 | 16, /* bitsize */ | |
b34976b6 | 680 | FALSE, /* pc_relative */ |
5bd4f169 AM |
681 | 0, /* bitpos */ |
682 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 683 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 684 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 685 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
686 | 0, /* src_mask */ |
687 | 0xffff, /* dst_mask */ | |
b34976b6 | 688 | FALSE), /* pcrel_offset */ |
5bd4f169 | 689 | |
c061c2d8 | 690 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
691 | HOWTO (R_PPC64_SECTOFF, /* type */ |
692 | 0, /* rightshift */ | |
c061c2d8 AM |
693 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
694 | 16, /* bitsize */ | |
b34976b6 | 695 | FALSE, /* pc_relative */ |
5bd4f169 AM |
696 | 0, /* bitpos */ |
697 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 698 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 699 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 700 | FALSE, /* partial_inplace */ |
5bd4f169 | 701 | 0, /* src_mask */ |
c061c2d8 | 702 | 0xffff, /* dst_mask */ |
b34976b6 | 703 | FALSE), /* pcrel_offset */ |
5bd4f169 | 704 | |
c061c2d8 | 705 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
706 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
707 | 0, /* rightshift */ | |
708 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
709 | 16, /* bitsize */ | |
b34976b6 | 710 | FALSE, /* pc_relative */ |
5bd4f169 AM |
711 | 0, /* bitpos */ |
712 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 713 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 714 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 715 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
716 | 0, /* src_mask */ |
717 | 0xffff, /* dst_mask */ | |
b34976b6 | 718 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
719 | |
720 | /* 16-bit upper half section relative relocation. */ | |
721 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
722 | 16, /* rightshift */ | |
723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
724 | 16, /* bitsize */ | |
b34976b6 | 725 | FALSE, /* pc_relative */ |
5bd4f169 AM |
726 | 0, /* bitpos */ |
727 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 728 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 729 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 730 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
731 | 0, /* src_mask */ |
732 | 0xffff, /* dst_mask */ | |
b34976b6 | 733 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
734 | |
735 | /* 16-bit upper half adjusted section relative relocation. */ | |
736 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
737 | 16, /* rightshift */ | |
738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
739 | 16, /* bitsize */ | |
b34976b6 | 740 | FALSE, /* pc_relative */ |
5bd4f169 AM |
741 | 0, /* bitpos */ |
742 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 743 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 744 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 745 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
746 | 0, /* src_mask */ |
747 | 0xffff, /* dst_mask */ | |
b34976b6 | 748 | FALSE), /* pcrel_offset */ |
5bd4f169 | 749 | |
04c9666a AM |
750 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
751 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
752 | 2, /* rightshift */ |
753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 30, /* bitsize */ | |
b34976b6 | 755 | TRUE, /* pc_relative */ |
5bd4f169 AM |
756 | 0, /* bitpos */ |
757 | complain_overflow_dont, /* complain_on_overflow */ | |
758 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 759 | "R_PPC64_REL30", /* name */ |
b34976b6 | 760 | FALSE, /* partial_inplace */ |
d006db6c | 761 | 0, /* src_mask */ |
5bd4f169 | 762 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 763 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
764 | |
765 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
766 | ||
767 | /* A standard 64-bit relocation. */ | |
768 | HOWTO (R_PPC64_ADDR64, /* type */ | |
769 | 0, /* rightshift */ | |
770 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
771 | 64, /* bitsize */ | |
b34976b6 | 772 | FALSE, /* pc_relative */ |
5bd4f169 AM |
773 | 0, /* bitpos */ |
774 | complain_overflow_dont, /* complain_on_overflow */ | |
775 | bfd_elf_generic_reloc, /* special_function */ | |
776 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 777 | FALSE, /* partial_inplace */ |
5bd4f169 | 778 | 0, /* src_mask */ |
f5e87a1d | 779 | ONES (64), /* dst_mask */ |
b34976b6 | 780 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
781 | |
782 | /* The bits 32-47 of an address. */ | |
783 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
784 | 32, /* rightshift */ | |
785 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
786 | 16, /* bitsize */ | |
b34976b6 | 787 | FALSE, /* pc_relative */ |
5bd4f169 AM |
788 | 0, /* bitpos */ |
789 | complain_overflow_dont, /* complain_on_overflow */ | |
790 | bfd_elf_generic_reloc, /* special_function */ | |
791 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 792 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
793 | 0, /* src_mask */ |
794 | 0xffff, /* dst_mask */ | |
b34976b6 | 795 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
796 | |
797 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
798 | 16 bits, treated as a signed number, is negative. */ | |
799 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
800 | 32, /* rightshift */ | |
801 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
802 | 16, /* bitsize */ | |
b34976b6 | 803 | FALSE, /* pc_relative */ |
5bd4f169 AM |
804 | 0, /* bitpos */ |
805 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 806 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 807 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 808 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
809 | 0, /* src_mask */ |
810 | 0xffff, /* dst_mask */ | |
b34976b6 | 811 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
812 | |
813 | /* The bits 48-63 of an address. */ | |
814 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
815 | 48, /* rightshift */ | |
816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
817 | 16, /* bitsize */ | |
b34976b6 | 818 | FALSE, /* pc_relative */ |
5bd4f169 AM |
819 | 0, /* bitpos */ |
820 | complain_overflow_dont, /* complain_on_overflow */ | |
821 | bfd_elf_generic_reloc, /* special_function */ | |
822 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 823 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
824 | 0, /* src_mask */ |
825 | 0xffff, /* dst_mask */ | |
b34976b6 | 826 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
827 | |
828 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
829 | 16 bits, treated as a signed number, is negative. */ | |
830 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
831 | 48, /* rightshift */ | |
832 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
833 | 16, /* bitsize */ | |
b34976b6 | 834 | FALSE, /* pc_relative */ |
5bd4f169 AM |
835 | 0, /* bitpos */ |
836 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 837 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 838 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 839 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
840 | 0, /* src_mask */ |
841 | 0xffff, /* dst_mask */ | |
b34976b6 | 842 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
843 | |
844 | /* Like ADDR64, but may be unaligned. */ | |
845 | HOWTO (R_PPC64_UADDR64, /* type */ | |
846 | 0, /* rightshift */ | |
847 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
848 | 64, /* bitsize */ | |
b34976b6 | 849 | FALSE, /* pc_relative */ |
5bd4f169 AM |
850 | 0, /* bitpos */ |
851 | complain_overflow_dont, /* complain_on_overflow */ | |
852 | bfd_elf_generic_reloc, /* special_function */ | |
853 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 854 | FALSE, /* partial_inplace */ |
5bd4f169 | 855 | 0, /* src_mask */ |
f5e87a1d | 856 | ONES (64), /* dst_mask */ |
b34976b6 | 857 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
858 | |
859 | /* 64-bit relative relocation. */ | |
860 | HOWTO (R_PPC64_REL64, /* type */ | |
861 | 0, /* rightshift */ | |
862 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
863 | 64, /* bitsize */ | |
b34976b6 | 864 | TRUE, /* pc_relative */ |
5bd4f169 AM |
865 | 0, /* bitpos */ |
866 | complain_overflow_dont, /* complain_on_overflow */ | |
867 | bfd_elf_generic_reloc, /* special_function */ | |
868 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 869 | FALSE, /* partial_inplace */ |
5bd4f169 | 870 | 0, /* src_mask */ |
f5e87a1d | 871 | ONES (64), /* dst_mask */ |
b34976b6 | 872 | TRUE), /* pcrel_offset */ |
5bd4f169 | 873 | |
cedb70c5 | 874 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
875 | HOWTO (R_PPC64_PLT64, /* type */ |
876 | 0, /* rightshift */ | |
877 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
878 | 64, /* bitsize */ | |
b34976b6 | 879 | FALSE, /* pc_relative */ |
5bd4f169 AM |
880 | 0, /* bitpos */ |
881 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 882 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 883 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 884 | FALSE, /* partial_inplace */ |
5bd4f169 | 885 | 0, /* src_mask */ |
f5e87a1d | 886 | ONES (64), /* dst_mask */ |
b34976b6 | 887 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
888 | |
889 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
890 | table. */ | |
891 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
892 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
893 | 0, /* rightshift */ | |
894 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
895 | 64, /* bitsize */ | |
b34976b6 | 896 | TRUE, /* pc_relative */ |
5bd4f169 AM |
897 | 0, /* bitpos */ |
898 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 899 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 900 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 901 | FALSE, /* partial_inplace */ |
5bd4f169 | 902 | 0, /* src_mask */ |
f5e87a1d | 903 | ONES (64), /* dst_mask */ |
b34976b6 | 904 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
905 | |
906 | /* 16 bit TOC-relative relocation. */ | |
907 | ||
908 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
909 | HOWTO (R_PPC64_TOC16, /* type */ | |
910 | 0, /* rightshift */ | |
911 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
912 | 16, /* bitsize */ | |
b34976b6 | 913 | FALSE, /* pc_relative */ |
5bd4f169 AM |
914 | 0, /* bitpos */ |
915 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 916 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 917 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 918 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
919 | 0, /* src_mask */ |
920 | 0xffff, /* dst_mask */ | |
b34976b6 | 921 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
922 | |
923 | /* 16 bit TOC-relative relocation without overflow. */ | |
924 | ||
925 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
926 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
927 | 0, /* rightshift */ | |
928 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
929 | 16, /* bitsize */ | |
b34976b6 | 930 | FALSE, /* pc_relative */ |
5bd4f169 AM |
931 | 0, /* bitpos */ |
932 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 933 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 934 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 935 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
936 | 0, /* src_mask */ |
937 | 0xffff, /* dst_mask */ | |
b34976b6 | 938 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
939 | |
940 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
941 | ||
942 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
943 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
944 | 16, /* rightshift */ | |
945 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
946 | 16, /* bitsize */ | |
b34976b6 | 947 | FALSE, /* pc_relative */ |
5bd4f169 AM |
948 | 0, /* bitpos */ |
949 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 950 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 951 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 952 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
953 | 0, /* src_mask */ |
954 | 0xffff, /* dst_mask */ | |
b34976b6 | 955 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
956 | |
957 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
958 | contents of the low 16 bits, treated as a signed number, is | |
959 | negative. */ | |
960 | ||
961 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
962 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
963 | 16, /* rightshift */ | |
964 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
965 | 16, /* bitsize */ | |
b34976b6 | 966 | FALSE, /* pc_relative */ |
5bd4f169 AM |
967 | 0, /* bitpos */ |
968 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 969 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 970 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 971 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
972 | 0, /* src_mask */ |
973 | 0xffff, /* dst_mask */ | |
b34976b6 | 974 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
975 | |
976 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
977 | ||
978 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
979 | HOWTO (R_PPC64_TOC, /* type */ | |
980 | 0, /* rightshift */ | |
981 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
982 | 64, /* bitsize */ | |
b34976b6 | 983 | FALSE, /* pc_relative */ |
5bd4f169 AM |
984 | 0, /* bitpos */ |
985 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 986 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 987 | "R_PPC64_TOC", /* name */ |
b34976b6 | 988 | FALSE, /* partial_inplace */ |
5bd4f169 | 989 | 0, /* src_mask */ |
f5e87a1d | 990 | ONES (64), /* dst_mask */ |
b34976b6 | 991 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
992 | |
993 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
994 | value to relocate may (!) refer to a PLT entry which the link | |
995 | editor (a) may replace with the symbol value. If the link editor | |
996 | is unable to fully resolve the symbol, it may (b) create a PLT | |
997 | entry and store the address to the new PLT entry in the GOT. | |
998 | This permits lazy resolution of function symbols at run time. | |
999 | The link editor may also skip all of this and just (c) emit a | |
1000 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1001 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1002 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1003 | 0, /* rightshift */ | |
1004 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1005 | 16, /* bitsize */ | |
b34976b6 | 1006 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1007 | 0, /* bitpos */ |
1008 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1009 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1010 | "R_PPC64_PLTGOT16", /* name */ |
1011 | FALSE, /* partial_inplace */ | |
1012 | 0, /* src_mask */ | |
1013 | 0xffff, /* dst_mask */ | |
1014 | FALSE), /* pcrel_offset */ | |
1015 | ||
1016 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1017 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1018 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1019 | 0, /* rightshift */ | |
1020 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1021 | 16, /* bitsize */ | |
1022 | FALSE, /* pc_relative */ | |
1023 | 0, /* bitpos */ | |
1024 | complain_overflow_dont, /* complain_on_overflow */ | |
1025 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1026 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1027 | FALSE, /* partial_inplace */ | |
1028 | 0, /* src_mask */ | |
1029 | 0xffff, /* dst_mask */ | |
1030 | FALSE), /* pcrel_offset */ | |
1031 | ||
1032 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1033 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1034 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1035 | 16, /* rightshift */ | |
1036 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1037 | 16, /* bitsize */ | |
1038 | FALSE, /* pc_relative */ | |
1039 | 0, /* bitpos */ | |
1040 | complain_overflow_dont, /* complain_on_overflow */ | |
1041 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1042 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1043 | FALSE, /* partial_inplace */ | |
1044 | 0, /* src_mask */ | |
1045 | 0xffff, /* dst_mask */ | |
1046 | FALSE), /* pcrel_offset */ | |
1047 | ||
1048 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1049 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1050 | is negative. */ | |
1051 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1052 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1053 | 16, /* rightshift */ | |
1054 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1055 | 16, /* bitsize */ | |
1056 | FALSE, /* pc_relative */ | |
1057 | 0, /* bitpos */ | |
1058 | complain_overflow_dont,/* complain_on_overflow */ | |
1059 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1060 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1061 | FALSE, /* partial_inplace */ | |
1062 | 0, /* src_mask */ | |
1063 | 0xffff, /* dst_mask */ | |
1064 | FALSE), /* pcrel_offset */ | |
1065 | ||
1066 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1067 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1068 | 0, /* rightshift */ | |
1069 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1070 | 16, /* bitsize */ | |
1071 | FALSE, /* pc_relative */ | |
1072 | 0, /* bitpos */ | |
1073 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1074 | bfd_elf_generic_reloc, /* special_function */ | |
1075 | "R_PPC64_ADDR16_DS", /* name */ | |
1076 | FALSE, /* partial_inplace */ | |
1077 | 0, /* src_mask */ | |
1078 | 0xfffc, /* dst_mask */ | |
1079 | FALSE), /* pcrel_offset */ | |
1080 | ||
1081 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1082 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1083 | 0, /* rightshift */ | |
1084 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1085 | 16, /* bitsize */ | |
1086 | FALSE, /* pc_relative */ | |
1087 | 0, /* bitpos */ | |
1088 | complain_overflow_dont,/* complain_on_overflow */ | |
1089 | bfd_elf_generic_reloc, /* special_function */ | |
1090 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1091 | FALSE, /* partial_inplace */ | |
1092 | 0, /* src_mask */ | |
1093 | 0xfffc, /* dst_mask */ | |
1094 | FALSE), /* pcrel_offset */ | |
1095 | ||
1096 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1097 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1098 | 0, /* rightshift */ | |
1099 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1100 | 16, /* bitsize */ | |
1101 | FALSE, /* pc_relative */ | |
1102 | 0, /* bitpos */ | |
1103 | complain_overflow_signed, /* complain_on_overflow */ | |
1104 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1105 | "R_PPC64_GOT16_DS", /* name */ | |
1106 | FALSE, /* partial_inplace */ | |
1107 | 0, /* src_mask */ | |
1108 | 0xfffc, /* dst_mask */ | |
1109 | FALSE), /* pcrel_offset */ | |
1110 | ||
1111 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1112 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1113 | 0, /* rightshift */ | |
1114 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1115 | 16, /* bitsize */ | |
1116 | FALSE, /* pc_relative */ | |
1117 | 0, /* bitpos */ | |
1118 | complain_overflow_dont, /* complain_on_overflow */ | |
1119 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1120 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1121 | FALSE, /* partial_inplace */ | |
1122 | 0, /* src_mask */ | |
1123 | 0xfffc, /* dst_mask */ | |
1124 | FALSE), /* pcrel_offset */ | |
1125 | ||
1126 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1127 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1128 | 0, /* rightshift */ | |
1129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1130 | 16, /* bitsize */ | |
1131 | FALSE, /* pc_relative */ | |
1132 | 0, /* bitpos */ | |
1133 | complain_overflow_dont, /* complain_on_overflow */ | |
1134 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1135 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1136 | FALSE, /* partial_inplace */ | |
1137 | 0, /* src_mask */ | |
1138 | 0xfffc, /* dst_mask */ | |
1139 | FALSE), /* pcrel_offset */ | |
1140 | ||
1141 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1142 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1143 | 0, /* rightshift */ | |
1144 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1145 | 16, /* bitsize */ | |
1146 | FALSE, /* pc_relative */ | |
1147 | 0, /* bitpos */ | |
1148 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1149 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1150 | "R_PPC64_SECTOFF_DS", /* name */ | |
1151 | FALSE, /* partial_inplace */ | |
1152 | 0, /* src_mask */ | |
1153 | 0xfffc, /* dst_mask */ | |
1154 | FALSE), /* pcrel_offset */ | |
1155 | ||
1156 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1157 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1158 | 0, /* rightshift */ | |
1159 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1160 | 16, /* bitsize */ | |
1161 | FALSE, /* pc_relative */ | |
1162 | 0, /* bitpos */ | |
1163 | complain_overflow_dont, /* complain_on_overflow */ | |
1164 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1165 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1166 | FALSE, /* partial_inplace */ | |
1167 | 0, /* src_mask */ | |
1168 | 0xfffc, /* dst_mask */ | |
1169 | FALSE), /* pcrel_offset */ | |
1170 | ||
1171 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1172 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1173 | 0, /* rightshift */ | |
1174 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1175 | 16, /* bitsize */ | |
1176 | FALSE, /* pc_relative */ | |
1177 | 0, /* bitpos */ | |
1178 | complain_overflow_signed, /* complain_on_overflow */ | |
1179 | ppc64_elf_toc_reloc, /* special_function */ | |
1180 | "R_PPC64_TOC16_DS", /* name */ | |
1181 | FALSE, /* partial_inplace */ | |
1182 | 0, /* src_mask */ | |
1183 | 0xfffc, /* dst_mask */ | |
1184 | FALSE), /* pcrel_offset */ | |
1185 | ||
1186 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1187 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1188 | 0, /* rightshift */ | |
1189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1190 | 16, /* bitsize */ | |
1191 | FALSE, /* pc_relative */ | |
1192 | 0, /* bitpos */ | |
1193 | complain_overflow_dont, /* complain_on_overflow */ | |
1194 | ppc64_elf_toc_reloc, /* special_function */ | |
1195 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1196 | FALSE, /* partial_inplace */ | |
1197 | 0, /* src_mask */ | |
1198 | 0xfffc, /* dst_mask */ | |
1199 | FALSE), /* pcrel_offset */ | |
1200 | ||
1201 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1202 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1203 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1204 | 0, /* rightshift */ |
1205 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1206 | 16, /* bitsize */ | |
1207 | FALSE, /* pc_relative */ | |
1208 | 0, /* bitpos */ | |
1209 | complain_overflow_signed, /* complain_on_overflow */ | |
1210 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1211 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1212 | FALSE, /* partial_inplace */ | |
1213 | 0, /* src_mask */ | |
1214 | 0xfffc, /* dst_mask */ | |
1215 | FALSE), /* pcrel_offset */ | |
1216 | ||
1217 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1218 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1219 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1220 | 0, /* rightshift */ | |
1221 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1222 | 16, /* bitsize */ | |
1223 | FALSE, /* pc_relative */ | |
1224 | 0, /* bitpos */ | |
1225 | complain_overflow_dont, /* complain_on_overflow */ | |
1226 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1227 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1228 | FALSE, /* partial_inplace */ | |
1229 | 0, /* src_mask */ | |
1230 | 0xfffc, /* dst_mask */ | |
1231 | FALSE), /* pcrel_offset */ | |
1232 | ||
1233 | /* Marker reloc for TLS. */ | |
1234 | HOWTO (R_PPC64_TLS, | |
1235 | 0, /* rightshift */ | |
1236 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1237 | 32, /* bitsize */ | |
1238 | FALSE, /* pc_relative */ | |
1239 | 0, /* bitpos */ | |
1240 | complain_overflow_dont, /* complain_on_overflow */ | |
1241 | bfd_elf_generic_reloc, /* special_function */ | |
1242 | "R_PPC64_TLS", /* name */ | |
1243 | FALSE, /* partial_inplace */ | |
1244 | 0, /* src_mask */ | |
1245 | 0, /* dst_mask */ | |
1246 | FALSE), /* pcrel_offset */ | |
1247 | ||
1248 | /* Computes the load module index of the load module that contains the | |
1249 | definition of its TLS sym. */ | |
1250 | HOWTO (R_PPC64_DTPMOD64, | |
1251 | 0, /* rightshift */ | |
1252 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1253 | 64, /* bitsize */ | |
1254 | FALSE, /* pc_relative */ | |
1255 | 0, /* bitpos */ | |
1256 | complain_overflow_dont, /* complain_on_overflow */ | |
1257 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1258 | "R_PPC64_DTPMOD64", /* name */ | |
1259 | FALSE, /* partial_inplace */ | |
1260 | 0, /* src_mask */ | |
1261 | ONES (64), /* dst_mask */ | |
1262 | FALSE), /* pcrel_offset */ | |
1263 | ||
1264 | /* Computes a dtv-relative displacement, the difference between the value | |
1265 | of sym+add and the base address of the thread-local storage block that | |
1266 | contains the definition of sym, minus 0x8000. */ | |
1267 | HOWTO (R_PPC64_DTPREL64, | |
1268 | 0, /* rightshift */ | |
1269 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 64, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_dont, /* complain_on_overflow */ | |
1274 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1275 | "R_PPC64_DTPREL64", /* name */ | |
1276 | FALSE, /* partial_inplace */ | |
1277 | 0, /* src_mask */ | |
1278 | ONES (64), /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
1281 | /* A 16 bit dtprel reloc. */ | |
1282 | HOWTO (R_PPC64_DTPREL16, | |
1283 | 0, /* rightshift */ | |
1284 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1285 | 16, /* bitsize */ | |
1286 | FALSE, /* pc_relative */ | |
1287 | 0, /* bitpos */ | |
1288 | complain_overflow_signed, /* complain_on_overflow */ | |
1289 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1290 | "R_PPC64_DTPREL16", /* name */ | |
1291 | FALSE, /* partial_inplace */ | |
1292 | 0, /* src_mask */ | |
1293 | 0xffff, /* dst_mask */ | |
1294 | FALSE), /* pcrel_offset */ | |
1295 | ||
1296 | /* Like DTPREL16, but no overflow. */ | |
1297 | HOWTO (R_PPC64_DTPREL16_LO, | |
1298 | 0, /* rightshift */ | |
1299 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1300 | 16, /* bitsize */ | |
1301 | FALSE, /* pc_relative */ | |
1302 | 0, /* bitpos */ | |
1303 | complain_overflow_dont, /* complain_on_overflow */ | |
1304 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1305 | "R_PPC64_DTPREL16_LO", /* name */ | |
1306 | FALSE, /* partial_inplace */ | |
1307 | 0, /* src_mask */ | |
1308 | 0xffff, /* dst_mask */ | |
1309 | FALSE), /* pcrel_offset */ | |
1310 | ||
1311 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1312 | HOWTO (R_PPC64_DTPREL16_HI, | |
1313 | 16, /* rightshift */ | |
1314 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 16, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_dont, /* complain_on_overflow */ | |
1319 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1320 | "R_PPC64_DTPREL16_HI", /* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0, /* src_mask */ | |
1323 | 0xffff, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1327 | HOWTO (R_PPC64_DTPREL16_HA, | |
1328 | 16, /* rightshift */ | |
1329 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1330 | 16, /* bitsize */ | |
1331 | FALSE, /* pc_relative */ | |
1332 | 0, /* bitpos */ | |
1333 | complain_overflow_dont, /* complain_on_overflow */ | |
1334 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1335 | "R_PPC64_DTPREL16_HA", /* name */ | |
1336 | FALSE, /* partial_inplace */ | |
1337 | 0, /* src_mask */ | |
1338 | 0xffff, /* dst_mask */ | |
1339 | FALSE), /* pcrel_offset */ | |
1340 | ||
1341 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1342 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1343 | 32, /* rightshift */ | |
1344 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1345 | 16, /* bitsize */ | |
1346 | FALSE, /* pc_relative */ | |
1347 | 0, /* bitpos */ | |
1348 | complain_overflow_dont, /* complain_on_overflow */ | |
1349 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1350 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1351 | FALSE, /* partial_inplace */ | |
1352 | 0, /* src_mask */ | |
1353 | 0xffff, /* dst_mask */ | |
1354 | FALSE), /* pcrel_offset */ | |
1355 | ||
1356 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1357 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1358 | 32, /* rightshift */ | |
1359 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 16, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_dont, /* complain_on_overflow */ | |
1364 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1365 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1366 | FALSE, /* partial_inplace */ | |
1367 | 0, /* src_mask */ | |
1368 | 0xffff, /* dst_mask */ | |
1369 | FALSE), /* pcrel_offset */ | |
1370 | ||
1371 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1372 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1373 | 48, /* rightshift */ | |
1374 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1375 | 16, /* bitsize */ | |
1376 | FALSE, /* pc_relative */ | |
1377 | 0, /* bitpos */ | |
1378 | complain_overflow_dont, /* complain_on_overflow */ | |
1379 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1380 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1381 | FALSE, /* partial_inplace */ | |
1382 | 0, /* src_mask */ | |
1383 | 0xffff, /* dst_mask */ | |
1384 | FALSE), /* pcrel_offset */ | |
1385 | ||
1386 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1387 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1388 | 48, /* rightshift */ | |
1389 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 16, /* bitsize */ | |
1391 | FALSE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_dont, /* complain_on_overflow */ | |
1394 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1395 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0, /* src_mask */ | |
1398 | 0xffff, /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
1401 | /* Like DTPREL16, but for insns with a DS field. */ | |
1402 | HOWTO (R_PPC64_DTPREL16_DS, | |
1403 | 0, /* rightshift */ | |
1404 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1405 | 16, /* bitsize */ | |
1406 | FALSE, /* pc_relative */ | |
1407 | 0, /* bitpos */ | |
1408 | complain_overflow_signed, /* complain_on_overflow */ | |
1409 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1410 | "R_PPC64_DTPREL16_DS", /* name */ | |
1411 | FALSE, /* partial_inplace */ | |
1412 | 0, /* src_mask */ | |
1413 | 0xfffc, /* dst_mask */ | |
1414 | FALSE), /* pcrel_offset */ | |
1415 | ||
1416 | /* Like DTPREL16_DS, but no overflow. */ | |
1417 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1418 | 0, /* rightshift */ | |
1419 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1420 | 16, /* bitsize */ | |
1421 | FALSE, /* pc_relative */ | |
1422 | 0, /* bitpos */ | |
1423 | complain_overflow_dont, /* complain_on_overflow */ | |
1424 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1425 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1426 | FALSE, /* partial_inplace */ | |
1427 | 0, /* src_mask */ | |
1428 | 0xfffc, /* dst_mask */ | |
1429 | FALSE), /* pcrel_offset */ | |
1430 | ||
1431 | /* Computes a tp-relative displacement, the difference between the value of | |
1432 | sym+add and the value of the thread pointer (r13). */ | |
1433 | HOWTO (R_PPC64_TPREL64, | |
1434 | 0, /* rightshift */ | |
1435 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1436 | 64, /* bitsize */ | |
1437 | FALSE, /* pc_relative */ | |
1438 | 0, /* bitpos */ | |
1439 | complain_overflow_dont, /* complain_on_overflow */ | |
1440 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1441 | "R_PPC64_TPREL64", /* name */ | |
1442 | FALSE, /* partial_inplace */ | |
1443 | 0, /* src_mask */ | |
1444 | ONES (64), /* dst_mask */ | |
1445 | FALSE), /* pcrel_offset */ | |
1446 | ||
1447 | /* A 16 bit tprel reloc. */ | |
1448 | HOWTO (R_PPC64_TPREL16, | |
1449 | 0, /* rightshift */ | |
1450 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1451 | 16, /* bitsize */ | |
1452 | FALSE, /* pc_relative */ | |
1453 | 0, /* bitpos */ | |
1454 | complain_overflow_signed, /* complain_on_overflow */ | |
1455 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1456 | "R_PPC64_TPREL16", /* name */ | |
1457 | FALSE, /* partial_inplace */ | |
1458 | 0, /* src_mask */ | |
1459 | 0xffff, /* dst_mask */ | |
1460 | FALSE), /* pcrel_offset */ | |
1461 | ||
1462 | /* Like TPREL16, but no overflow. */ | |
1463 | HOWTO (R_PPC64_TPREL16_LO, | |
1464 | 0, /* rightshift */ | |
1465 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1466 | 16, /* bitsize */ | |
1467 | FALSE, /* pc_relative */ | |
1468 | 0, /* bitpos */ | |
1469 | complain_overflow_dont, /* complain_on_overflow */ | |
1470 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1471 | "R_PPC64_TPREL16_LO", /* name */ | |
1472 | FALSE, /* partial_inplace */ | |
1473 | 0, /* src_mask */ | |
1474 | 0xffff, /* dst_mask */ | |
1475 | FALSE), /* pcrel_offset */ | |
1476 | ||
1477 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1478 | HOWTO (R_PPC64_TPREL16_HI, | |
1479 | 16, /* rightshift */ | |
1480 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1481 | 16, /* bitsize */ | |
1482 | FALSE, /* pc_relative */ | |
1483 | 0, /* bitpos */ | |
1484 | complain_overflow_dont, /* complain_on_overflow */ | |
1485 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1486 | "R_PPC64_TPREL16_HI", /* name */ | |
1487 | FALSE, /* partial_inplace */ | |
1488 | 0, /* src_mask */ | |
1489 | 0xffff, /* dst_mask */ | |
1490 | FALSE), /* pcrel_offset */ | |
1491 | ||
1492 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1493 | HOWTO (R_PPC64_TPREL16_HA, | |
1494 | 16, /* rightshift */ | |
1495 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1496 | 16, /* bitsize */ | |
1497 | FALSE, /* pc_relative */ | |
1498 | 0, /* bitpos */ | |
1499 | complain_overflow_dont, /* complain_on_overflow */ | |
1500 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1501 | "R_PPC64_TPREL16_HA", /* name */ | |
1502 | FALSE, /* partial_inplace */ | |
1503 | 0, /* src_mask */ | |
1504 | 0xffff, /* dst_mask */ | |
1505 | FALSE), /* pcrel_offset */ | |
1506 | ||
1507 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1508 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1509 | 32, /* rightshift */ | |
1510 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1511 | 16, /* bitsize */ | |
1512 | FALSE, /* pc_relative */ | |
1513 | 0, /* bitpos */ | |
1514 | complain_overflow_dont, /* complain_on_overflow */ | |
1515 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1516 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1517 | FALSE, /* partial_inplace */ | |
1518 | 0, /* src_mask */ | |
1519 | 0xffff, /* dst_mask */ | |
1520 | FALSE), /* pcrel_offset */ | |
1521 | ||
1522 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1523 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1524 | 32, /* rightshift */ | |
1525 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1526 | 16, /* bitsize */ | |
1527 | FALSE, /* pc_relative */ | |
1528 | 0, /* bitpos */ | |
1529 | complain_overflow_dont, /* complain_on_overflow */ | |
1530 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1531 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1532 | FALSE, /* partial_inplace */ | |
1533 | 0, /* src_mask */ | |
1534 | 0xffff, /* dst_mask */ | |
1535 | FALSE), /* pcrel_offset */ | |
1536 | ||
1537 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1538 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1539 | 48, /* rightshift */ | |
1540 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1541 | 16, /* bitsize */ | |
1542 | FALSE, /* pc_relative */ | |
1543 | 0, /* bitpos */ | |
1544 | complain_overflow_dont, /* complain_on_overflow */ | |
1545 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1546 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1547 | FALSE, /* partial_inplace */ | |
1548 | 0, /* src_mask */ | |
1549 | 0xffff, /* dst_mask */ | |
1550 | FALSE), /* pcrel_offset */ | |
1551 | ||
1552 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1553 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1554 | 48, /* rightshift */ | |
1555 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1556 | 16, /* bitsize */ | |
1557 | FALSE, /* pc_relative */ | |
1558 | 0, /* bitpos */ | |
1559 | complain_overflow_dont, /* complain_on_overflow */ | |
1560 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1561 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1562 | FALSE, /* partial_inplace */ | |
1563 | 0, /* src_mask */ | |
1564 | 0xffff, /* dst_mask */ | |
1565 | FALSE), /* pcrel_offset */ | |
1566 | ||
1567 | /* Like TPREL16, but for insns with a DS field. */ | |
1568 | HOWTO (R_PPC64_TPREL16_DS, | |
1569 | 0, /* rightshift */ | |
1570 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1571 | 16, /* bitsize */ | |
1572 | FALSE, /* pc_relative */ | |
1573 | 0, /* bitpos */ | |
1574 | complain_overflow_signed, /* complain_on_overflow */ | |
1575 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1576 | "R_PPC64_TPREL16_DS", /* name */ | |
1577 | FALSE, /* partial_inplace */ | |
1578 | 0, /* src_mask */ | |
1579 | 0xfffc, /* dst_mask */ | |
1580 | FALSE), /* pcrel_offset */ | |
1581 | ||
1582 | /* Like TPREL16_DS, but no overflow. */ | |
1583 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1584 | 0, /* rightshift */ | |
1585 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1586 | 16, /* bitsize */ | |
1587 | FALSE, /* pc_relative */ | |
1588 | 0, /* bitpos */ | |
1589 | complain_overflow_dont, /* complain_on_overflow */ | |
1590 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1591 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1592 | FALSE, /* partial_inplace */ | |
1593 | 0, /* src_mask */ | |
1594 | 0xfffc, /* dst_mask */ | |
1595 | FALSE), /* pcrel_offset */ | |
1596 | ||
1597 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1598 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1599 | to the first entry relative to the TOC base (r2). */ | |
1600 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1601 | 0, /* rightshift */ | |
1602 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1603 | 16, /* bitsize */ | |
1604 | FALSE, /* pc_relative */ | |
1605 | 0, /* bitpos */ | |
1606 | complain_overflow_signed, /* complain_on_overflow */ | |
1607 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1608 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1609 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1610 | 0, /* src_mask */ |
1611 | 0xffff, /* dst_mask */ | |
b34976b6 | 1612 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1613 | |
411e1bfb AM |
1614 | /* Like GOT_TLSGD16, but no overflow. */ |
1615 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1616 | 0, /* rightshift */ |
1617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1618 | 16, /* bitsize */ | |
b34976b6 | 1619 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1620 | 0, /* bitpos */ |
1621 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1622 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1623 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1624 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1625 | 0, /* src_mask */ |
1626 | 0xffff, /* dst_mask */ | |
b34976b6 | 1627 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1628 | |
411e1bfb AM |
1629 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1630 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1631 | 16, /* rightshift */ |
1632 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 16, /* bitsize */ | |
b34976b6 | 1634 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1635 | 0, /* bitpos */ |
1636 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1637 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1638 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1639 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1640 | 0, /* src_mask */ |
1641 | 0xffff, /* dst_mask */ | |
b34976b6 | 1642 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1643 | |
411e1bfb AM |
1644 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1645 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1646 | 16, /* rightshift */ |
1647 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1648 | 16, /* bitsize */ | |
b34976b6 | 1649 | FALSE, /* pc_relative */ |
5bd4f169 | 1650 | 0, /* bitpos */ |
411e1bfb | 1651 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1652 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1653 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1654 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1655 | 0, /* src_mask */ |
1656 | 0xffff, /* dst_mask */ | |
b34976b6 | 1657 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1658 | |
411e1bfb AM |
1659 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1660 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1661 | first entry relative to the TOC base (r2). */ | |
1662 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1663 | 0, /* rightshift */ |
1664 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1665 | 16, /* bitsize */ | |
b34976b6 | 1666 | FALSE, /* pc_relative */ |
5bd4f169 | 1667 | 0, /* bitpos */ |
411e1bfb AM |
1668 | complain_overflow_signed, /* complain_on_overflow */ |
1669 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1670 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1671 | FALSE, /* partial_inplace */ |
d006db6c | 1672 | 0, /* src_mask */ |
411e1bfb | 1673 | 0xffff, /* dst_mask */ |
b34976b6 | 1674 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1675 | |
411e1bfb AM |
1676 | /* Like GOT_TLSLD16, but no overflow. */ |
1677 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1678 | 0, /* rightshift */ |
1679 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1680 | 16, /* bitsize */ | |
b34976b6 | 1681 | FALSE, /* pc_relative */ |
5bd4f169 | 1682 | 0, /* bitpos */ |
411e1bfb AM |
1683 | complain_overflow_dont, /* complain_on_overflow */ |
1684 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1685 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1686 | FALSE, /* partial_inplace */ |
d006db6c | 1687 | 0, /* src_mask */ |
411e1bfb | 1688 | 0xffff, /* dst_mask */ |
b34976b6 | 1689 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1690 | |
411e1bfb AM |
1691 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1692 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1693 | 16, /* rightshift */ | |
5bd4f169 AM |
1694 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1695 | 16, /* bitsize */ | |
b34976b6 | 1696 | FALSE, /* pc_relative */ |
5bd4f169 | 1697 | 0, /* bitpos */ |
411e1bfb | 1698 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1699 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1700 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1701 | FALSE, /* partial_inplace */ |
d006db6c | 1702 | 0, /* src_mask */ |
411e1bfb | 1703 | 0xffff, /* dst_mask */ |
b34976b6 | 1704 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1705 | |
411e1bfb AM |
1706 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1707 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1708 | 16, /* rightshift */ | |
5bd4f169 AM |
1709 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1710 | 16, /* bitsize */ | |
b34976b6 | 1711 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1712 | 0, /* bitpos */ |
1713 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1714 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1715 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1716 | FALSE, /* partial_inplace */ |
d006db6c | 1717 | 0, /* src_mask */ |
411e1bfb | 1718 | 0xffff, /* dst_mask */ |
b34976b6 | 1719 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1720 | |
411e1bfb AM |
1721 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1722 | the offset to the entry relative to the TOC base (r2). */ | |
1723 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1724 | 0, /* rightshift */ |
1725 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1726 | 16, /* bitsize */ | |
b34976b6 | 1727 | FALSE, /* pc_relative */ |
5bd4f169 | 1728 | 0, /* bitpos */ |
411e1bfb | 1729 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1730 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1731 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1732 | FALSE, /* partial_inplace */ |
d006db6c | 1733 | 0, /* src_mask */ |
5bd4f169 | 1734 | 0xfffc, /* dst_mask */ |
b34976b6 | 1735 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1736 | |
411e1bfb AM |
1737 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1738 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1739 | 0, /* rightshift */ |
c061c2d8 AM |
1740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1741 | 16, /* bitsize */ | |
b34976b6 | 1742 | FALSE, /* pc_relative */ |
5bd4f169 | 1743 | 0, /* bitpos */ |
411e1bfb AM |
1744 | complain_overflow_dont, /* complain_on_overflow */ |
1745 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1746 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1747 | FALSE, /* partial_inplace */ |
d006db6c | 1748 | 0, /* src_mask */ |
c061c2d8 | 1749 | 0xfffc, /* dst_mask */ |
b34976b6 | 1750 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1751 | |
411e1bfb AM |
1752 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1753 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1754 | 16, /* rightshift */ | |
5bd4f169 AM |
1755 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1756 | 16, /* bitsize */ | |
b34976b6 | 1757 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1758 | 0, /* bitpos */ |
1759 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1760 | ppc64_elf_unhandled_reloc, /* special_function */ |
1761 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1762 | FALSE, /* partial_inplace */ |
d006db6c | 1763 | 0, /* src_mask */ |
411e1bfb | 1764 | 0xffff, /* dst_mask */ |
b34976b6 | 1765 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1766 | |
411e1bfb AM |
1767 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1768 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1769 | 16, /* rightshift */ | |
1770 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1771 | 16, /* bitsize */ | |
1772 | FALSE, /* pc_relative */ | |
1773 | 0, /* bitpos */ | |
1774 | complain_overflow_dont, /* complain_on_overflow */ | |
1775 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1776 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1777 | FALSE, /* partial_inplace */ | |
1778 | 0, /* src_mask */ | |
1779 | 0xffff, /* dst_mask */ | |
1780 | FALSE), /* pcrel_offset */ | |
1781 | ||
1782 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1783 | offset to the entry relative to the TOC base (r2). */ | |
1784 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1785 | 0, /* rightshift */ |
1786 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1787 | 16, /* bitsize */ | |
b34976b6 | 1788 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1789 | 0, /* bitpos */ |
1790 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1791 | ppc64_elf_unhandled_reloc, /* special_function */ |
1792 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1793 | FALSE, /* partial_inplace */ |
d006db6c | 1794 | 0, /* src_mask */ |
ad8e1ba5 | 1795 | 0xfffc, /* dst_mask */ |
b34976b6 | 1796 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1797 | |
411e1bfb AM |
1798 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1799 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1800 | 0, /* rightshift */ |
1801 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1802 | 16, /* bitsize */ | |
b34976b6 | 1803 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1804 | 0, /* bitpos */ |
1805 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1806 | ppc64_elf_unhandled_reloc, /* special_function */ |
1807 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1808 | FALSE, /* partial_inplace */ |
d006db6c | 1809 | 0, /* src_mask */ |
ad8e1ba5 | 1810 | 0xfffc, /* dst_mask */ |
b34976b6 | 1811 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1812 | |
411e1bfb AM |
1813 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1814 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1815 | 16, /* rightshift */ | |
5bd4f169 AM |
1816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1817 | 16, /* bitsize */ | |
b34976b6 | 1818 | FALSE, /* pc_relative */ |
5bd4f169 | 1819 | 0, /* bitpos */ |
411e1bfb | 1820 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1821 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1822 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1823 | FALSE, /* partial_inplace */ |
d006db6c | 1824 | 0, /* src_mask */ |
411e1bfb | 1825 | 0xffff, /* dst_mask */ |
b34976b6 | 1826 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1827 | |
411e1bfb AM |
1828 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1829 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1830 | 16, /* rightshift */ | |
5bd4f169 AM |
1831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1832 | 16, /* bitsize */ | |
b34976b6 | 1833 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1834 | 0, /* bitpos */ |
1835 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1836 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1837 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1838 | FALSE, /* partial_inplace */ |
d006db6c | 1839 | 0, /* src_mask */ |
411e1bfb | 1840 | 0xffff, /* dst_mask */ |
b34976b6 | 1841 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1842 | |
1843 | /* GNU extension to record C++ vtable hierarchy. */ | |
1844 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1845 | 0, /* rightshift */ | |
1846 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1847 | 0, /* bitsize */ | |
b34976b6 | 1848 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1849 | 0, /* bitpos */ |
1850 | complain_overflow_dont, /* complain_on_overflow */ | |
1851 | NULL, /* special_function */ | |
1852 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1853 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1854 | 0, /* src_mask */ |
1855 | 0, /* dst_mask */ | |
b34976b6 | 1856 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1857 | |
1858 | /* GNU extension to record C++ vtable member usage. */ | |
1859 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1860 | 0, /* rightshift */ | |
1861 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1862 | 0, /* bitsize */ | |
b34976b6 | 1863 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1864 | 0, /* bitpos */ |
1865 | complain_overflow_dont, /* complain_on_overflow */ | |
1866 | NULL, /* special_function */ | |
1867 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1868 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1869 | 0, /* src_mask */ |
1870 | 0, /* dst_mask */ | |
b34976b6 | 1871 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1872 | }; |
1873 | ||
1874 | \f | |
1875 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1876 | be done. */ | |
1877 | ||
1878 | static void | |
4ce794b7 | 1879 | ppc_howto_init (void) |
5bd4f169 AM |
1880 | { |
1881 | unsigned int i, type; | |
1882 | ||
1883 | for (i = 0; | |
1884 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1885 | i++) | |
1886 | { | |
1887 | type = ppc64_elf_howto_raw[i].type; | |
1888 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1889 | / sizeof (ppc64_elf_howto_table[0]))); | |
1890 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | static reloc_howto_type * | |
4ce794b7 AM |
1895 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1896 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1897 | { |
411e1bfb | 1898 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1899 | |
1900 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1901 | /* Initialize howto table if needed. */ | |
1902 | ppc_howto_init (); | |
1903 | ||
4ce794b7 | 1904 | switch (code) |
5bd4f169 AM |
1905 | { |
1906 | default: | |
4ce794b7 | 1907 | return NULL; |
5bd4f169 | 1908 | |
411e1bfb AM |
1909 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1910 | break; | |
1911 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1912 | break; | |
1913 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1914 | break; | |
1915 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1916 | break; | |
1917 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1918 | break; | |
1919 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1920 | break; | |
1921 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1922 | break; |
411e1bfb | 1923 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1924 | break; |
411e1bfb | 1925 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2018 | break; |
411e1bfb | 2019 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2020 | break; |
411e1bfb | 2021 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2022 | break; |
411e1bfb | 2023 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2024 | break; |
411e1bfb | 2025 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2026 | break; |
411e1bfb | 2027 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2028 | break; |
411e1bfb | 2029 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2030 | break; |
411e1bfb | 2031 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2032 | break; |
411e1bfb | 2033 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2034 | break; |
411e1bfb | 2035 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2036 | break; |
411e1bfb | 2037 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2038 | break; |
411e1bfb | 2039 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2040 | break; |
411e1bfb AM |
2041 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2042 | break; | |
2043 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2044 | break; | |
2045 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2046 | break; | |
2047 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2082 | break; | |
2083 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2084 | break; | |
2085 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2086 | break; | |
2087 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2088 | break; | |
2089 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2090 | break; | |
2091 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2092 | break; | |
2093 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2094 | break; | |
2095 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2096 | break; | |
2097 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2098 | break; | |
2099 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2100 | break; | |
2101 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2102 | break; | |
2103 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2104 | break; | |
2105 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2106 | break; | |
2107 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2108 | break; | |
2109 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2110 | break; |
2111 | } | |
2112 | ||
4ce794b7 | 2113 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2114 | }; |
2115 | ||
157090f7 AM |
2116 | static reloc_howto_type * |
2117 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2118 | const char *r_name) | |
2119 | { | |
2120 | unsigned int i; | |
2121 | ||
2122 | for (i = 0; | |
2123 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2124 | i++) | |
2125 | if (ppc64_elf_howto_raw[i].name != NULL | |
2126 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2127 | return &ppc64_elf_howto_raw[i]; | |
2128 | ||
2129 | return NULL; | |
2130 | } | |
2131 | ||
5bd4f169 AM |
2132 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2133 | ||
2134 | static void | |
4ce794b7 AM |
2135 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2136 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2137 | { |
65f38f15 AM |
2138 | unsigned int type; |
2139 | ||
ef60b7ff | 2140 | /* Initialize howto table if needed. */ |
5bd4f169 | 2141 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2142 | ppc_howto_init (); |
2143 | ||
65f38f15 | 2144 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2145 | if (type >= (sizeof (ppc64_elf_howto_table) |
2146 | / sizeof (ppc64_elf_howto_table[0]))) | |
2147 | { | |
2148 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2149 | abfd, (int) type); |
2150 | type = R_PPC64_NONE; | |
d0fb9a8d | 2151 | } |
65f38f15 | 2152 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2153 | } |
2154 | ||
04c9666a | 2155 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2156 | |
2157 | static bfd_reloc_status_type | |
4ce794b7 AM |
2158 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2159 | void *data, asection *input_section, | |
2160 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2161 | { |
805fc799 AM |
2162 | /* If this is a relocatable link (output_bfd test tells us), just |
2163 | call the generic function. Any adjustment will be done at final | |
2164 | link time. */ | |
2165 | if (output_bfd != NULL) | |
cedb70c5 | 2166 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2167 | input_section, output_bfd, error_message); |
2168 | ||
2169 | /* Adjust the addend for sign extension of the low 16 bits. | |
2170 | We won't actually be using the low 16 bits, so trashing them | |
2171 | doesn't matter. */ | |
2172 | reloc_entry->addend += 0x8000; | |
2173 | return bfd_reloc_continue; | |
2174 | } | |
5bd4f169 | 2175 | |
2441e016 AM |
2176 | static bfd_reloc_status_type |
2177 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2178 | void *data, asection *input_section, | |
2179 | bfd *output_bfd, char **error_message) | |
2180 | { | |
2181 | if (output_bfd != NULL) | |
2182 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2183 | input_section, output_bfd, error_message); | |
2184 | ||
699733f6 AM |
2185 | if (strcmp (symbol->section->name, ".opd") == 0 |
2186 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2187 | { |
2188 | bfd_vma dest = opd_entry_value (symbol->section, | |
2189 | symbol->value + reloc_entry->addend, | |
2190 | NULL, NULL); | |
2191 | if (dest != (bfd_vma) -1) | |
2192 | reloc_entry->addend = dest - (symbol->value | |
2193 | + symbol->section->output_section->vma | |
2194 | + symbol->section->output_offset); | |
2195 | } | |
2196 | return bfd_reloc_continue; | |
2197 | } | |
2198 | ||
805fc799 | 2199 | static bfd_reloc_status_type |
4ce794b7 AM |
2200 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2201 | void *data, asection *input_section, | |
2202 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2203 | { |
2204 | long insn; | |
04c9666a | 2205 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2206 | bfd_size_type octets; |
2207 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2208 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2209 | |
2210 | /* If this is a relocatable link (output_bfd test tells us), just | |
2211 | call the generic function. Any adjustment will be done at final | |
2212 | link time. */ | |
5bd4f169 | 2213 | if (output_bfd != NULL) |
cedb70c5 | 2214 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2215 | input_section, output_bfd, error_message); |
2216 | ||
2217 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2218 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2219 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2220 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2221 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2222 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2223 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2224 | |
2225 | if (is_power4) | |
5bd4f169 | 2226 | { |
805fc799 AM |
2227 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2228 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2229 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2230 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2231 | insn |= 0x02 << 21; | |
2232 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2233 | insn |= 0x08 << 21; | |
2234 | else | |
2441e016 | 2235 | goto out; |
5bd4f169 | 2236 | } |
805fc799 AM |
2237 | else |
2238 | { | |
2239 | bfd_vma target = 0; | |
2240 | bfd_vma from; | |
5bd4f169 | 2241 | |
805fc799 AM |
2242 | if (!bfd_is_com_section (symbol->section)) |
2243 | target = symbol->value; | |
2244 | target += symbol->section->output_section->vma; | |
2245 | target += symbol->section->output_offset; | |
2246 | target += reloc_entry->addend; | |
5bd4f169 | 2247 | |
805fc799 AM |
2248 | from = (reloc_entry->address |
2249 | + input_section->output_offset | |
2250 | + input_section->output_section->vma); | |
5bd4f169 | 2251 | |
805fc799 AM |
2252 | /* Invert 'y' bit if not the default. */ |
2253 | if ((bfd_signed_vma) (target - from) < 0) | |
2254 | insn ^= 0x01 << 21; | |
2255 | } | |
4ce794b7 | 2256 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2257 | out: |
2258 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2259 | input_section, output_bfd, error_message); | |
805fc799 | 2260 | } |
5bd4f169 | 2261 | |
805fc799 | 2262 | static bfd_reloc_status_type |
4ce794b7 AM |
2263 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2264 | void *data, asection *input_section, | |
2265 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2266 | { |
2267 | /* If this is a relocatable link (output_bfd test tells us), just | |
2268 | call the generic function. Any adjustment will be done at final | |
2269 | link time. */ | |
2270 | if (output_bfd != NULL) | |
cedb70c5 | 2271 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2272 | input_section, output_bfd, error_message); |
5bd4f169 | 2273 | |
805fc799 AM |
2274 | /* Subtract the symbol section base address. */ |
2275 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2276 | return bfd_reloc_continue; |
2277 | } | |
2278 | ||
805fc799 | 2279 | static bfd_reloc_status_type |
4ce794b7 AM |
2280 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2281 | void *data, asection *input_section, | |
2282 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2283 | { |
2284 | /* If this is a relocatable link (output_bfd test tells us), just | |
2285 | call the generic function. Any adjustment will be done at final | |
2286 | link time. */ | |
2287 | if (output_bfd != NULL) | |
cedb70c5 | 2288 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2289 | input_section, output_bfd, error_message); |
2290 | ||
2291 | /* Subtract the symbol section base address. */ | |
2292 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2293 | ||
2294 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2295 | reloc_entry->addend += 0x8000; | |
2296 | return bfd_reloc_continue; | |
2297 | } | |
2298 | ||
2299 | static bfd_reloc_status_type | |
4ce794b7 AM |
2300 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2301 | void *data, asection *input_section, | |
2302 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2303 | { |
2304 | bfd_vma TOCstart; | |
2305 | ||
2306 | /* If this is a relocatable link (output_bfd test tells us), just | |
2307 | call the generic function. Any adjustment will be done at final | |
2308 | link time. */ | |
2309 | if (output_bfd != NULL) | |
cedb70c5 | 2310 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2311 | input_section, output_bfd, error_message); |
2312 | ||
2313 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2314 | if (TOCstart == 0) | |
2315 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2316 | ||
2317 | /* Subtract the TOC base address. */ | |
2318 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2319 | return bfd_reloc_continue; | |
2320 | } | |
2321 | ||
2322 | static bfd_reloc_status_type | |
4ce794b7 AM |
2323 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2324 | void *data, asection *input_section, | |
2325 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2326 | { |
2327 | bfd_vma TOCstart; | |
2328 | ||
2329 | /* If this is a relocatable link (output_bfd test tells us), just | |
2330 | call the generic function. Any adjustment will be done at final | |
2331 | link time. */ | |
2332 | if (output_bfd != NULL) | |
cedb70c5 | 2333 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2334 | input_section, output_bfd, error_message); |
2335 | ||
2336 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2337 | if (TOCstart == 0) | |
2338 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2339 | ||
2340 | /* Subtract the TOC base address. */ | |
2341 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2342 | ||
2343 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2344 | reloc_entry->addend += 0x8000; | |
2345 | return bfd_reloc_continue; | |
2346 | } | |
2347 | ||
2348 | static bfd_reloc_status_type | |
4ce794b7 AM |
2349 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2350 | void *data, asection *input_section, | |
2351 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2352 | { |
2353 | bfd_vma TOCstart; | |
2354 | bfd_size_type octets; | |
2355 | ||
2356 | /* If this is a relocatable link (output_bfd test tells us), just | |
2357 | call the generic function. Any adjustment will be done at final | |
2358 | link time. */ | |
2359 | if (output_bfd != NULL) | |
cedb70c5 | 2360 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2361 | input_section, output_bfd, error_message); |
2362 | ||
2363 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2364 | if (TOCstart == 0) | |
2365 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2366 | ||
2367 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2368 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2369 | return bfd_reloc_ok; | |
2370 | } | |
2371 | ||
2372 | static bfd_reloc_status_type | |
4ce794b7 AM |
2373 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2374 | void *data, asection *input_section, | |
2375 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2376 | { |
2377 | /* If this is a relocatable link (output_bfd test tells us), just | |
2378 | call the generic function. Any adjustment will be done at final | |
2379 | link time. */ | |
2380 | if (output_bfd != NULL) | |
cedb70c5 | 2381 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2382 | input_section, output_bfd, error_message); |
2383 | ||
2384 | if (error_message != NULL) | |
2385 | { | |
2386 | static char buf[60]; | |
2387 | sprintf (buf, "generic linker can't handle %s", | |
2388 | reloc_entry->howto->name); | |
2389 | *error_message = buf; | |
2390 | } | |
2391 | return bfd_reloc_dangerous; | |
2392 | } | |
2393 | ||
e717da7e AM |
2394 | struct ppc64_elf_obj_tdata |
2395 | { | |
2396 | struct elf_obj_tdata elf; | |
2397 | ||
2398 | /* Shortcuts to dynamic linker sections. */ | |
2399 | asection *got; | |
2400 | asection *relgot; | |
2401 | ||
b3fac117 AM |
2402 | /* Used during garbage collection. We attach global symbols defined |
2403 | on removed .opd entries to this section so that the sym is removed. */ | |
2404 | asection *deleted_section; | |
81688140 | 2405 | |
e717da7e AM |
2406 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2407 | sections means we potentially need one of these for each input bfd. */ | |
2408 | union { | |
2409 | bfd_signed_vma refcount; | |
2410 | bfd_vma offset; | |
2411 | } tlsld_got; | |
8860955f AM |
2412 | |
2413 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2414 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2415 | }; |
2416 | ||
2417 | #define ppc64_elf_tdata(bfd) \ | |
2418 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2419 | ||
2420 | #define ppc64_tlsld_got(bfd) \ | |
2421 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2422 | ||
2423 | /* Override the generic function because we store some extras. */ | |
2424 | ||
2425 | static bfd_boolean | |
2426 | ppc64_elf_mkobject (bfd *abfd) | |
2427 | { | |
e717da7e | 2428 | if (abfd->tdata.any == NULL) |
62d7a5f6 AM |
2429 | { |
2430 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2431 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2432 | if (abfd->tdata.any == NULL) | |
2433 | return FALSE; | |
2434 | } | |
2435 | return bfd_elf_mkobject (abfd); | |
e717da7e AM |
2436 | } |
2437 | ||
ee75fd95 AM |
2438 | /* Return 1 if target is one of ours. */ |
2439 | ||
7b53ace3 | 2440 | static bfd_boolean |
ee75fd95 | 2441 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2442 | { |
2443 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2444 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2445 | ||
2446 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2447 | } | |
2448 | ||
feee612b AM |
2449 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2450 | default is 32 bit. */ | |
2451 | ||
b34976b6 | 2452 | static bfd_boolean |
4ce794b7 | 2453 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2454 | { |
2455 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2456 | { | |
2457 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2458 | ||
2459 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2460 | { | |
2461 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2462 | abfd->arch_info = abfd->arch_info->next; | |
2463 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2464 | } | |
2465 | } | |
b34976b6 | 2466 | return TRUE; |
feee612b AM |
2467 | } |
2468 | ||
d37c89e5 AM |
2469 | /* Support for core dump NOTE sections. */ |
2470 | ||
2471 | static bfd_boolean | |
2472 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2473 | { | |
eea6121a | 2474 | size_t offset, size; |
d37c89e5 AM |
2475 | |
2476 | if (note->descsz != 504) | |
2477 | return FALSE; | |
2478 | ||
2479 | /* pr_cursig */ | |
2480 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2481 | ||
2482 | /* pr_pid */ | |
2483 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2484 | ||
2485 | /* pr_reg */ | |
2486 | offset = 112; | |
eea6121a | 2487 | size = 384; |
d37c89e5 AM |
2488 | |
2489 | /* Make a ".reg/999" section. */ | |
2490 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2491 | size, note->descpos + offset); |
d37c89e5 AM |
2492 | } |
2493 | ||
2494 | static bfd_boolean | |
2495 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2496 | { | |
2497 | if (note->descsz != 136) | |
2498 | return FALSE; | |
2499 | ||
2500 | elf_tdata (abfd)->core_program | |
2501 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2502 | elf_tdata (abfd)->core_command | |
2503 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2504 | ||
2505 | return TRUE; | |
2506 | } | |
2507 | ||
183e98be AM |
2508 | static char * |
2509 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2510 | ...) | |
2511 | { | |
2512 | switch (note_type) | |
2513 | { | |
2514 | default: | |
2515 | return NULL; | |
2516 | ||
2517 | case NT_PRPSINFO: | |
2518 | { | |
2519 | char data[136]; | |
2520 | va_list ap; | |
2521 | ||
2522 | va_start (ap, note_type); | |
2523 | memset (data, 0, 40); | |
2524 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2525 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2526 | va_end (ap); | |
2527 | return elfcore_write_note (abfd, buf, bufsiz, | |
2528 | "CORE", note_type, data, sizeof (data)); | |
2529 | } | |
2530 | ||
2531 | case NT_PRSTATUS: | |
2532 | { | |
2533 | char data[504]; | |
2534 | va_list ap; | |
2535 | long pid; | |
2536 | int cursig; | |
2537 | const void *greg; | |
2538 | ||
2539 | va_start (ap, note_type); | |
2540 | memset (data, 0, 112); | |
2541 | pid = va_arg (ap, long); | |
2542 | bfd_put_32 (abfd, pid, data + 32); | |
2543 | cursig = va_arg (ap, int); | |
2544 | bfd_put_16 (abfd, cursig, data + 12); | |
2545 | greg = va_arg (ap, const void *); | |
2546 | memcpy (data + 112, greg, 384); | |
2547 | memset (data + 496, 0, 8); | |
2548 | va_end (ap); | |
2549 | return elfcore_write_note (abfd, buf, bufsiz, | |
2550 | "CORE", note_type, data, sizeof (data)); | |
2551 | } | |
2552 | } | |
2553 | } | |
2554 | ||
5bd4f169 AM |
2555 | /* Merge backend specific data from an object file to the output |
2556 | object file when linking. */ | |
2f6d9989 | 2557 | |
b34976b6 | 2558 | static bfd_boolean |
4ce794b7 | 2559 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2560 | { |
5bd4f169 AM |
2561 | /* Check if we have the same endianess. */ |
2562 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2563 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2564 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2565 | { | |
2566 | const char *msg; | |
2567 | ||
2568 | if (bfd_big_endian (ibfd)) | |
d003868e | 2569 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2570 | "and target is little endian"); |
5bd4f169 | 2571 | else |
d003868e | 2572 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2573 | "and target is big endian"); |
5bd4f169 | 2574 | |
d003868e | 2575 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2576 | |
2577 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2578 | return FALSE; |
5bd4f169 AM |
2579 | } |
2580 | ||
b34976b6 | 2581 | return TRUE; |
5bd4f169 | 2582 | } |
f0abc2a1 | 2583 | |
5d35169e AM |
2584 | /* Add extra PPC sections. */ |
2585 | ||
b35d266b | 2586 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2587 | { |
0112cd26 NC |
2588 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2589 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2590 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2591 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2592 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2593 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2594 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2595 | }; |
2596 | ||
7c8fe5c4 AM |
2597 | enum _ppc64_sec_type { |
2598 | sec_normal = 0, | |
2599 | sec_opd = 1, | |
2600 | sec_toc = 2 | |
2601 | }; | |
2602 | ||
f0abc2a1 AM |
2603 | struct _ppc64_elf_section_data |
2604 | { | |
2605 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2606 | |
2607 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2608 | union |
2609 | { | |
411e1bfb | 2610 | /* Points to the function code section for local opd entries. */ |
7c8fe5c4 | 2611 | asection **opd_func_sec; |
411e1bfb | 2612 | /* After editing .opd, adjust references to opd local syms. */ |
7c8fe5c4 AM |
2613 | long *opd_adjust; |
2614 | ||
2615 | /* An array for toc sections, indexed by offset/8. | |
2616 | Specifies the relocation symbol index used at a given toc offset. */ | |
2617 | unsigned *t_symndx; | |
2618 | } u; | |
2619 | ||
2620 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2621 | |
7c8fe5c4 AM |
2622 | /* Flag set when small branches are detected. Used to |
2623 | select suitable defaults for the stub group size. */ | |
2624 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2625 | }; |
2626 | ||
2627 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2628 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2629 | |
2630 | static bfd_boolean | |
4ce794b7 | 2631 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2632 | { |
f592407e AM |
2633 | if (!sec->used_by_bfd) |
2634 | { | |
2635 | struct _ppc64_elf_section_data *sdata; | |
2636 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2637 | |
f592407e AM |
2638 | sdata = bfd_zalloc (abfd, amt); |
2639 | if (sdata == NULL) | |
2640 | return FALSE; | |
2641 | sec->used_by_bfd = sdata; | |
2642 | } | |
f0abc2a1 AM |
2643 | |
2644 | return _bfd_elf_new_section_hook (abfd, sec); | |
2645 | } | |
4025353c AM |
2646 | |
2647 | static void * | |
2648 | get_opd_info (asection * sec) | |
2649 | { | |
2650 | if (sec != NULL | |
2651 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 AM |
2652 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
2653 | return ppc64_elf_section_data (sec)->u.opd_adjust; | |
4025353c AM |
2654 | return NULL; |
2655 | } | |
90e3cdf2 JJ |
2656 | \f |
2657 | /* Parameters for the qsort hook. */ | |
2658 | static asection *synthetic_opd; | |
2659 | static bfd_boolean synthetic_relocatable; | |
2660 | ||
699733f6 | 2661 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2662 | |
2663 | static int | |
2664 | compare_symbols (const void *ap, const void *bp) | |
2665 | { | |
2666 | const asymbol *a = * (const asymbol **) ap; | |
2667 | const asymbol *b = * (const asymbol **) bp; | |
2668 | ||
699733f6 AM |
2669 | /* Section symbols first. */ |
2670 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2671 | return -1; |
699733f6 | 2672 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2673 | return 1; |
2674 | ||
699733f6 | 2675 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2676 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2677 | return -1; | |
2678 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2679 | return 1; | |
2680 | ||
699733f6 | 2681 | /* then other code symbols. */ |
90e3cdf2 JJ |
2682 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2683 | == (SEC_CODE | SEC_ALLOC) | |
2684 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2685 | != (SEC_CODE | SEC_ALLOC)) | |
2686 | return -1; | |
2687 | ||
2688 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2689 | != (SEC_CODE | SEC_ALLOC) | |
2690 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2691 | == (SEC_CODE | SEC_ALLOC)) | |
2692 | return 1; | |
2693 | ||
2694 | if (synthetic_relocatable) | |
2695 | { | |
2696 | if (a->section->id < b->section->id) | |
2697 | return -1; | |
2698 | ||
2699 | if (a->section->id > b->section->id) | |
2700 | return 1; | |
2701 | } | |
2702 | ||
2703 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2704 | return -1; | |
2705 | ||
2706 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2707 | return 1; | |
2708 | ||
4d35a0aa AM |
2709 | /* For syms with the same value, prefer strong dynamic global function |
2710 | syms over other syms. */ | |
2711 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2712 | return -1; | |
2713 | ||
2714 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2715 | return 1; | |
2716 | ||
2717 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2718 | return -1; | |
2719 | ||
2720 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2721 | return 1; | |
2722 | ||
2723 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2724 | return -1; | |
2725 | ||
2726 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2727 | return 1; | |
2728 | ||
2729 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2730 | return -1; | |
2731 | ||
2732 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2733 | return 1; | |
2734 | ||
90e3cdf2 JJ |
2735 | return 0; |
2736 | } | |
2737 | ||
699733f6 | 2738 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2739 | |
699733f6 AM |
2740 | static asymbol * |
2741 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2742 | { |
699733f6 | 2743 | long mid; |
90e3cdf2 | 2744 | |
699733f6 AM |
2745 | if (id == -1) |
2746 | { | |
2747 | while (lo < hi) | |
2748 | { | |
2749 | mid = (lo + hi) >> 1; | |
2750 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2751 | lo = mid + 1; | |
2752 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2753 | hi = mid; | |
2754 | else | |
2755 | return syms[mid]; | |
2756 | } | |
2757 | } | |
2758 | else | |
2759 | { | |
2760 | while (lo < hi) | |
2761 | { | |
2762 | mid = (lo + hi) >> 1; | |
2763 | if (syms[mid]->section->id < id) | |
2764 | lo = mid + 1; | |
2765 | else if (syms[mid]->section->id > id) | |
2766 | hi = mid; | |
2767 | else if (syms[mid]->value < value) | |
2768 | lo = mid + 1; | |
2769 | else if (syms[mid]->value > value) | |
2770 | hi = mid; | |
2771 | else | |
2772 | return syms[mid]; | |
2773 | } | |
2774 | } | |
2775 | return NULL; | |
90e3cdf2 JJ |
2776 | } |
2777 | ||
699733f6 AM |
2778 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2779 | entry syms. */ | |
90e3cdf2 JJ |
2780 | |
2781 | static long | |
a7535cf3 AM |
2782 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2783 | long static_count, asymbol **static_syms, | |
2784 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2785 | asymbol **ret) |
90e3cdf2 JJ |
2786 | { |
2787 | asymbol *s; | |
699733f6 AM |
2788 | long i; |
2789 | long count; | |
90e3cdf2 | 2790 | char *names; |
a7535cf3 | 2791 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2792 | asection *opd; |
90e3cdf2 | 2793 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2794 | asymbol **syms; |
90e3cdf2 JJ |
2795 | |
2796 | *ret = NULL; | |
2797 | ||
2798 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2799 | if (opd == NULL) | |
2800 | return 0; | |
2801 | ||
a7535cf3 | 2802 | symcount = static_count; |
c9727e01 | 2803 | if (!relocatable) |
a7535cf3 | 2804 | symcount += dyn_count; |
90e3cdf2 | 2805 | if (symcount == 0) |
c9727e01 | 2806 | return 0; |
90e3cdf2 | 2807 | |
a7535cf3 AM |
2808 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2809 | if (syms == NULL) | |
7356fed5 | 2810 | return -1; |
a7535cf3 AM |
2811 | |
2812 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2813 | { | |
2814 | /* Use both symbol tables. */ | |
2815 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2816 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2817 | } | |
2818 | else if (!relocatable && static_count == 0) | |
2819 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2820 | else | |
2821 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2822 | ||
90e3cdf2 JJ |
2823 | synthetic_opd = opd; |
2824 | synthetic_relocatable = relocatable; | |
595da8c5 | 2825 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2826 | |
c9727e01 AM |
2827 | if (!relocatable && symcount > 1) |
2828 | { | |
2829 | long j; | |
2830 | /* Trim duplicate syms, since we may have merged the normal and | |
2831 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2832 | different values, so trim any with the same value. */ |
c9727e01 AM |
2833 | for (i = 1, j = 1; i < symcount; ++i) |
2834 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2835 | != syms[i]->value + syms[i]->section->vma) | |
2836 | syms[j++] = syms[i]; | |
2837 | symcount = j; | |
2838 | } | |
2839 | ||
699733f6 AM |
2840 | i = 0; |
2841 | if (syms[i]->section == opd) | |
2842 | ++i; | |
2843 | codesecsym = i; | |
90e3cdf2 | 2844 | |
699733f6 AM |
2845 | for (; i < symcount; ++i) |
2846 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2847 | != (SEC_CODE | SEC_ALLOC)) | |
2848 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2849 | break; | |
2850 | codesecsymend = i; | |
90e3cdf2 | 2851 | |
699733f6 AM |
2852 | for (; i < symcount; ++i) |
2853 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2854 | break; | |
2855 | secsymend = i; | |
90e3cdf2 | 2856 | |
699733f6 AM |
2857 | for (; i < symcount; ++i) |
2858 | if (syms[i]->section != opd) | |
2859 | break; | |
2860 | opdsymend = i; | |
90e3cdf2 | 2861 | |
699733f6 AM |
2862 | for (; i < symcount; ++i) |
2863 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2864 | != (SEC_CODE | SEC_ALLOC)) | |
2865 | break; | |
2866 | symcount = i; | |
2867 | ||
c9727e01 | 2868 | count = 0; |
699733f6 | 2869 | if (opdsymend == secsymend) |
c9727e01 | 2870 | goto done; |
90e3cdf2 | 2871 | |
699733f6 | 2872 | if (relocatable) |
90e3cdf2 | 2873 | { |
699733f6 AM |
2874 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2875 | arelent *r; | |
2876 | size_t size; | |
2877 | long relcount; | |
90e3cdf2 | 2878 | |
699733f6 | 2879 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2880 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2881 | if (relcount == 0) |
c9727e01 | 2882 | goto done; |
90e3cdf2 | 2883 | |
7356fed5 AM |
2884 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2885 | { | |
2886 | count = -1; | |
2887 | goto done; | |
2888 | } | |
2889 | ||
699733f6 | 2890 | size = 0; |
595da8c5 | 2891 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2892 | { |
2893 | asymbol *sym; | |
90e3cdf2 | 2894 | |
595da8c5 | 2895 | while (r < opd->relocation + relcount |
699733f6 AM |
2896 | && r->address < syms[i]->value + opd->vma) |
2897 | ++r; | |
90e3cdf2 | 2898 | |
595da8c5 | 2899 | if (r == opd->relocation + relcount) |
699733f6 | 2900 | break; |
90e3cdf2 | 2901 | |
699733f6 AM |
2902 | if (r->address != syms[i]->value + opd->vma) |
2903 | continue; | |
90e3cdf2 | 2904 | |
699733f6 AM |
2905 | if (r->howto->type != R_PPC64_ADDR64) |
2906 | continue; | |
90e3cdf2 | 2907 | |
699733f6 AM |
2908 | sym = *r->sym_ptr_ptr; |
2909 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2910 | sym->section->id, sym->value + r->addend)) | |
2911 | { | |
2912 | ++count; | |
2913 | size += sizeof (asymbol); | |
2914 | size += strlen (syms[i]->name) + 2; | |
2915 | } | |
2916 | } | |
90e3cdf2 | 2917 | |
699733f6 AM |
2918 | s = *ret = bfd_malloc (size); |
2919 | if (s == NULL) | |
2920 | { | |
7356fed5 | 2921 | count = -1; |
c9727e01 | 2922 | goto done; |
699733f6 | 2923 | } |
90e3cdf2 | 2924 | |
699733f6 | 2925 | names = (char *) (s + count); |
90e3cdf2 | 2926 | |
595da8c5 | 2927 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2928 | { |
699733f6 | 2929 | asymbol *sym; |
90e3cdf2 | 2930 | |
595da8c5 | 2931 | while (r < opd->relocation + relcount |
699733f6 AM |
2932 | && r->address < syms[i]->value + opd->vma) |
2933 | ++r; | |
90e3cdf2 | 2934 | |
595da8c5 | 2935 | if (r == opd->relocation + relcount) |
699733f6 AM |
2936 | break; |
2937 | ||
2938 | if (r->address != syms[i]->value + opd->vma) | |
2939 | continue; | |
2940 | ||
2941 | if (r->howto->type != R_PPC64_ADDR64) | |
2942 | continue; | |
90e3cdf2 | 2943 | |
699733f6 AM |
2944 | sym = *r->sym_ptr_ptr; |
2945 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2946 | sym->section->id, sym->value + r->addend)) | |
2947 | { | |
2948 | size_t len; | |
2949 | ||
2950 | *s = *syms[i]; | |
2951 | s->section = sym->section; | |
2952 | s->value = sym->value + r->addend; | |
2953 | s->name = names; | |
2954 | *names++ = '.'; | |
2955 | len = strlen (syms[i]->name); | |
2956 | memcpy (names, syms[i]->name, len + 1); | |
2957 | names += len + 1; | |
2958 | s++; | |
2959 | } | |
2960 | } | |
2961 | } | |
2962 | else | |
90e3cdf2 | 2963 | { |
699733f6 AM |
2964 | bfd_byte *contents; |
2965 | size_t size; | |
90e3cdf2 | 2966 | |
699733f6 AM |
2967 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2968 | { | |
2969 | if (contents) | |
c9727e01 AM |
2970 | { |
2971 | free_contents_and_exit: | |
2972 | free (contents); | |
2973 | } | |
7356fed5 | 2974 | count = -1; |
c9727e01 | 2975 | goto done; |
699733f6 | 2976 | } |
90e3cdf2 | 2977 | |
699733f6 AM |
2978 | size = 0; |
2979 | for (i = secsymend; i < opdsymend; ++i) | |
2980 | { | |
2981 | bfd_vma ent; | |
90e3cdf2 | 2982 | |
699733f6 AM |
2983 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2984 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2985 | { | |
2986 | ++count; | |
2987 | size += sizeof (asymbol); | |
2988 | size += strlen (syms[i]->name) + 2; | |
2989 | } | |
2990 | } | |
90e3cdf2 | 2991 | |
699733f6 AM |
2992 | s = *ret = bfd_malloc (size); |
2993 | if (s == NULL) | |
7356fed5 | 2994 | goto free_contents_and_exit; |
90e3cdf2 | 2995 | |
699733f6 | 2996 | names = (char *) (s + count); |
90e3cdf2 | 2997 | |
699733f6 | 2998 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2999 | { |
699733f6 | 3000 | bfd_vma ent; |
90e3cdf2 | 3001 | |
699733f6 AM |
3002 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3003 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3004 | { |
c9727e01 | 3005 | long lo, hi; |
699733f6 | 3006 | size_t len; |
c9727e01 | 3007 | asection *sec = abfd->sections; |
90e3cdf2 | 3008 | |
699733f6 AM |
3009 | *s = *syms[i]; |
3010 | lo = codesecsym; | |
3011 | hi = codesecsymend; | |
3012 | while (lo < hi) | |
3013 | { | |
c9727e01 | 3014 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3015 | if (syms[mid]->section->vma < ent) |
3016 | lo = mid + 1; | |
3017 | else if (syms[mid]->section->vma > ent) | |
3018 | hi = mid; | |
3019 | else | |
c9727e01 AM |
3020 | { |
3021 | sec = syms[mid]->section; | |
3022 | break; | |
3023 | } | |
699733f6 AM |
3024 | } |
3025 | ||
c9727e01 | 3026 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3027 | sec = syms[lo - 1]->section; |
699733f6 AM |
3028 | |
3029 | for (; sec != NULL; sec = sec->next) | |
3030 | { | |
3031 | if (sec->vma > ent) | |
3032 | break; | |
3033 | if ((sec->flags & SEC_ALLOC) == 0 | |
3034 | || (sec->flags & SEC_LOAD) == 0) | |
3035 | break; | |
3036 | if ((sec->flags & SEC_CODE) != 0) | |
3037 | s->section = sec; | |
3038 | } | |
3039 | s->value = ent - s->section->vma; | |
3040 | s->name = names; | |
3041 | *names++ = '.'; | |
3042 | len = strlen (syms[i]->name); | |
3043 | memcpy (names, syms[i]->name, len + 1); | |
3044 | names += len + 1; | |
3045 | s++; | |
90e3cdf2 | 3046 | } |
90e3cdf2 | 3047 | } |
699733f6 | 3048 | free (contents); |
90e3cdf2 JJ |
3049 | } |
3050 | ||
c9727e01 | 3051 | done: |
a7535cf3 | 3052 | free (syms); |
90e3cdf2 JJ |
3053 | return count; |
3054 | } | |
5bd4f169 | 3055 | \f |
65f38f15 AM |
3056 | /* The following functions are specific to the ELF linker, while |
3057 | functions above are used generally. Those named ppc64_elf_* are | |
3058 | called by the main ELF linker code. They appear in this file more | |
3059 | or less in the order in which they are called. eg. | |
3060 | ppc64_elf_check_relocs is called early in the link process, | |
3061 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3062 | called. |
3063 | ||
3064 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3065 | functions have both a function code symbol and a function descriptor | |
3066 | symbol. A call to foo in a relocatable object file looks like: | |
3067 | ||
3068 | . .text | |
3069 | . x: | |
3070 | . bl .foo | |
3071 | . nop | |
3072 | ||
3073 | The function definition in another object file might be: | |
3074 | ||
3075 | . .section .opd | |
3076 | . foo: .quad .foo | |
3077 | . .quad .TOC.@tocbase | |
3078 | . .quad 0 | |
3079 | . | |
3080 | . .text | |
3081 | . .foo: blr | |
3082 | ||
3083 | When the linker resolves the call during a static link, the branch | |
3084 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3085 | If the function definition is in a shared library, things are a little | |
3086 | different: The call goes via a plt call stub, the opd information gets | |
3087 | copied to the plt, and the linker patches the nop. | |
3088 | ||
3089 | . x: | |
3090 | . bl .foo_stub | |
3091 | . ld 2,40(1) | |
3092 | . | |
3093 | . | |
3094 | . .foo_stub: | |
3095 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3096 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3097 | . std 2,40(1) # this is the general idea |
3098 | . ld 11,0(12) | |
3099 | . ld 2,8(12) | |
3100 | . mtctr 11 | |
3101 | . ld 11,16(12) | |
3102 | . bctr | |
3103 | . | |
3104 | . .section .plt | |
3105 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3106 | ||
3107 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3108 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3109 | copying. | |
3110 | ||
3111 | What are the difficulties here? Well, firstly, the relocations | |
3112 | examined by the linker in check_relocs are against the function code | |
3113 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3114 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3115 | to carefully copy dynamic link information from one symbol to the other. | |
3116 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3117 | symbol as is normal for most other backends. We need foo dynamic | |
3118 | instead, at least for an application final link. However, when | |
3119 | creating a shared library containing foo, we need to have both symbols | |
3120 | dynamic so that references to .foo are satisfied during the early | |
3121 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3122 | definition from some other object, eg. a static library. |
3123 | ||
3124 | Update: As of August 2004, we support a new convention. Function | |
3125 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3126 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3127 | |
3128 | /* The linker needs to keep track of the number of relocs that it | |
3129 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3130 | This is so that it can later discard them if they are found to be | |
3131 | unnecessary. We store the information in a field extending the | |
3132 | regular ELF linker hash table. */ | |
3133 | ||
3134 | struct ppc_dyn_relocs | |
3135 | { | |
3136 | struct ppc_dyn_relocs *next; | |
3137 | ||
3138 | /* The input section of the reloc. */ | |
3139 | asection *sec; | |
3140 | ||
3141 | /* Total number of relocs copied for the input section. */ | |
3142 | bfd_size_type count; | |
3143 | ||
3144 | /* Number of pc-relative relocs copied for the input section. */ | |
3145 | bfd_size_type pc_count; | |
3146 | }; | |
3147 | ||
411e1bfb AM |
3148 | /* Track GOT entries needed for a given symbol. We might need more |
3149 | than one got entry per symbol. */ | |
3150 | struct got_entry | |
3151 | { | |
3152 | struct got_entry *next; | |
3153 | ||
e7b938ca | 3154 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3155 | bfd_vma addend; |
3156 | ||
e717da7e AM |
3157 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3158 | symbol referenced from different input files. This is to support | |
3159 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3160 | from one input file to another. | |
3161 | ||
3162 | Point to the BFD owning this GOT entry. */ | |
3163 | bfd *owner; | |
3164 | ||
3165 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3166 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3167 | char tls_type; | |
3168 | ||
e7b938ca | 3169 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3170 | union |
3171 | { | |
3172 | bfd_signed_vma refcount; | |
3173 | bfd_vma offset; | |
3174 | } got; | |
411e1bfb AM |
3175 | }; |
3176 | ||
3177 | /* The same for PLT. */ | |
3178 | struct plt_entry | |
3179 | { | |
3180 | struct plt_entry *next; | |
3181 | ||
3182 | bfd_vma addend; | |
3183 | ||
3184 | union | |
3185 | { | |
3186 | bfd_signed_vma refcount; | |
3187 | bfd_vma offset; | |
3188 | } plt; | |
3189 | }; | |
3190 | ||
65f38f15 | 3191 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3192 | selects those that must be copied when linking a shared library, |
3193 | even when the symbol is local. */ | |
65f38f15 | 3194 | |
411e1bfb | 3195 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3196 | ((RTYPE) != R_PPC64_REL32 \ |
3197 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3198 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3199 | |
f4656909 AM |
3200 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3201 | copying dynamic variables from a shared lib into an app's dynbss | |
3202 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3203 | shared lib. With code that gcc generates, it's vital that this be |
3204 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3205 | the address of a function descriptor, which resides in the .opd | |
3206 | section. gcc uses the descriptor directly rather than going via the | |
3207 | GOT as some other ABI's do, which means that initialized function | |
3208 | pointers must reference the descriptor. Thus, a function pointer | |
3209 | initialized to the address of a function in a shared library will | |
3210 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3211 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3212 | presents a problem as a plt entry for that function is also |
3213 | initialized from the function descriptor symbol and the copy reloc | |
3214 | may not be initialized first. */ | |
a23b6845 | 3215 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3216 | |
721956f4 AM |
3217 | /* Section name for stubs is the associated section name plus this |
3218 | string. */ | |
3219 | #define STUB_SUFFIX ".stub" | |
3220 | ||
3221 | /* Linker stubs. | |
3222 | ppc_stub_long_branch: | |
3223 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3224 | destination, but a 24 bit branch in a stub section will reach. | |
3225 | . b dest | |
3226 | ||
3227 | ppc_stub_plt_branch: | |
3228 | Similar to the above, but a 24 bit branch in the stub section won't | |
3229 | reach its destination. | |
87e226ce AM |
3230 | . addis %r12,%r2,xxx@toc@ha |
3231 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3232 | . mtctr %r11 |
3233 | . bctr | |
3234 | ||
3235 | ppc_stub_plt_call: | |
2c66dc6c AM |
3236 | Used to call a function in a shared library. If it so happens that |
3237 | the plt entry referenced crosses a 64k boundary, then an extra | |
3238 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3239 | xxx+16 as appropriate. | |
87e226ce | 3240 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3241 | . std %r2,40(%r1) |
87e226ce AM |
3242 | . ld %r11,xxx+0@toc@l(%r12) |
3243 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3244 | . mtctr %r11 |
87e226ce | 3245 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3246 | . bctr |
ad8e1ba5 AM |
3247 | |
3248 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3249 | code to adjust the value and save r2 to support multiple toc sections. | |
3250 | A ppc_stub_long_branch with an r2 offset looks like: | |
3251 | . std %r2,40(%r1) | |
3252 | . addis %r2,%r2,off@ha | |
3253 | . addi %r2,%r2,off@l | |
3254 | . b dest | |
3255 | ||
3256 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3257 | . std %r2,40(%r1) | |
3258 | . addis %r12,%r2,xxx@toc@ha | |
3259 | . ld %r11,xxx@toc@l(%r12) | |
3260 | . addis %r2,%r2,off@ha | |
3261 | . addi %r2,%r2,off@l | |
3262 | . mtctr %r11 | |
3263 | . bctr | |
721956f4 AM |
3264 | */ |
3265 | ||
3266 | enum ppc_stub_type { | |
3267 | ppc_stub_none, | |
3268 | ppc_stub_long_branch, | |
ad8e1ba5 | 3269 | ppc_stub_long_branch_r2off, |
721956f4 | 3270 | ppc_stub_plt_branch, |
ad8e1ba5 | 3271 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3272 | ppc_stub_plt_call |
3273 | }; | |
3274 | ||
3275 | struct ppc_stub_hash_entry { | |
3276 | ||
3277 | /* Base hash table entry structure. */ | |
3278 | struct bfd_hash_entry root; | |
3279 | ||
ad8e1ba5 AM |
3280 | enum ppc_stub_type stub_type; |
3281 | ||
721956f4 AM |
3282 | /* The stub section. */ |
3283 | asection *stub_sec; | |
3284 | ||
3285 | /* Offset within stub_sec of the beginning of this stub. */ | |
3286 | bfd_vma stub_offset; | |
3287 | ||
3288 | /* Given the symbol's value and its section we can determine its final | |
3289 | value when building the stubs (so the stub knows where to jump. */ | |
3290 | bfd_vma target_value; | |
3291 | asection *target_section; | |
3292 | ||
721956f4 AM |
3293 | /* The symbol table entry, if any, that this was derived from. */ |
3294 | struct ppc_link_hash_entry *h; | |
3295 | ||
411e1bfb AM |
3296 | /* And the reloc addend that this was derived from. */ |
3297 | bfd_vma addend; | |
3298 | ||
721956f4 AM |
3299 | /* Where this stub is being called from, or, in the case of combined |
3300 | stub sections, the first input section in the group. */ | |
3301 | asection *id_sec; | |
3302 | }; | |
3303 | ||
3304 | struct ppc_branch_hash_entry { | |
3305 | ||
3306 | /* Base hash table entry structure. */ | |
3307 | struct bfd_hash_entry root; | |
3308 | ||
c456f082 | 3309 | /* Offset within branch lookup table. */ |
721956f4 AM |
3310 | unsigned int offset; |
3311 | ||
3312 | /* Generation marker. */ | |
3313 | unsigned int iter; | |
3314 | }; | |
65f38f15 AM |
3315 | |
3316 | struct ppc_link_hash_entry | |
3317 | { | |
3318 | struct elf_link_hash_entry elf; | |
3319 | ||
b3fac117 AM |
3320 | union { |
3321 | /* A pointer to the most recently used stub hash entry against this | |
3322 | symbol. */ | |
3323 | struct ppc_stub_hash_entry *stub_cache; | |
3324 | ||
3325 | /* A pointer to the next symbol starting with a '.' */ | |
3326 | struct ppc_link_hash_entry *next_dot_sym; | |
3327 | } u; | |
721956f4 | 3328 | |
65f38f15 AM |
3329 | /* Track dynamic relocs copied for this symbol. */ |
3330 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3331 | |
721956f4 | 3332 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3333 | struct ppc_link_hash_entry *oh; |
721956f4 | 3334 | |
e86ce104 AM |
3335 | /* Flag function code and descriptor symbols. */ |
3336 | unsigned int is_func:1; | |
3337 | unsigned int is_func_descriptor:1; | |
908b32fc | 3338 | unsigned int fake:1; |
411e1bfb | 3339 | |
c5614fa4 AM |
3340 | /* Whether global opd/toc sym has been adjusted or not. |
3341 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3342 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3343 | unsigned int adjust_done:1; |
3344 | ||
99877b66 AM |
3345 | /* Set if we twiddled this symbol to weak at some stage. */ |
3346 | unsigned int was_undefined:1; | |
3347 | ||
411e1bfb | 3348 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3349 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3350 | corresponding relocs are encountered during check_relocs. | |
3351 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3352 | indicate the corresponding GOT entry type is not needed. | |
3353 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3354 | a TPREL one. We use a separate flag rather than setting TPREL | |
3355 | just for convenience in distinguishing the two cases. */ | |
3356 | #define TLS_GD 1 /* GD reloc. */ | |
3357 | #define TLS_LD 2 /* LD reloc. */ | |
3358 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3359 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3360 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3361 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3362 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3363 | char tls_mask; | |
65f38f15 AM |
3364 | }; |
3365 | ||
3366 | /* ppc64 ELF linker hash table. */ | |
3367 | ||
3368 | struct ppc_link_hash_table | |
3369 | { | |
3370 | struct elf_link_hash_table elf; | |
3371 | ||
721956f4 AM |
3372 | /* The stub hash table. */ |
3373 | struct bfd_hash_table stub_hash_table; | |
3374 | ||
3375 | /* Another hash table for plt_branch stubs. */ | |
3376 | struct bfd_hash_table branch_hash_table; | |
3377 | ||
3378 | /* Linker stub bfd. */ | |
3379 | bfd *stub_bfd; | |
3380 | ||
3381 | /* Linker call-backs. */ | |
4ce794b7 AM |
3382 | asection * (*add_stub_section) (const char *, asection *); |
3383 | void (*layout_sections_again) (void); | |
721956f4 AM |
3384 | |
3385 | /* Array to keep track of which stub sections have been created, and | |
3386 | information on stub grouping. */ | |
3387 | struct map_stub { | |
3388 | /* This is the section to which stubs in the group will be attached. */ | |
3389 | asection *link_sec; | |
3390 | /* The stub section. */ | |
3391 | asection *stub_sec; | |
ad8e1ba5 AM |
3392 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3393 | bfd_vma toc_off; | |
721956f4 AM |
3394 | } *stub_group; |
3395 | ||
ad8e1ba5 AM |
3396 | /* Temp used when calculating TOC pointers. */ |
3397 | bfd_vma toc_curr; | |
3398 | ||
8f3bab57 AM |
3399 | /* Highest input section id. */ |
3400 | int top_id; | |
3401 | ||
734b6cf9 AM |
3402 | /* Highest output section index. */ |
3403 | int top_index; | |
3404 | ||
b3fac117 AM |
3405 | /* Used when adding symbols. */ |
3406 | struct ppc_link_hash_entry *dot_syms; | |
3407 | ||
734b6cf9 AM |
3408 | /* List of input sections for each output section. */ |
3409 | asection **input_list; | |
721956f4 | 3410 | |
65f38f15 | 3411 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3412 | asection *got; |
4ce794b7 AM |
3413 | asection *plt; |
3414 | asection *relplt; | |
3415 | asection *dynbss; | |
3416 | asection *relbss; | |
3417 | asection *glink; | |
82bd7b59 | 3418 | asection *sfpr; |
4ce794b7 AM |
3419 | asection *brlt; |
3420 | asection *relbrlt; | |
ec338859 | 3421 | |
8387904d AM |
3422 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3423 | struct ppc_link_hash_entry *tls_get_addr; | |
3424 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3425 | |
9b5ecbd0 AM |
3426 | /* Statistics. */ |
3427 | unsigned long stub_count[ppc_stub_plt_call]; | |
3428 | ||
ee75fd95 AM |
3429 | /* Number of stubs against global syms. */ |
3430 | unsigned long stub_globals; | |
3431 | ||
ad8e1ba5 | 3432 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3433 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3434 | |
4c52953f AM |
3435 | /* Support for multiple toc sections. */ |
3436 | unsigned int no_multi_toc:1; | |
3437 | unsigned int multi_toc_needed:1; | |
3438 | ||
5d1634d7 | 3439 | /* Set on error. */ |
99877b66 | 3440 | unsigned int stub_error:1; |
721956f4 | 3441 | |
99877b66 AM |
3442 | /* Temp used by ppc64_elf_check_directives. */ |
3443 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3444 | |
3445 | /* Incremented every time we size stubs. */ | |
3446 | unsigned int stub_iteration; | |
5d1634d7 | 3447 | |
ec338859 AM |
3448 | /* Small local sym to section mapping cache. */ |
3449 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3450 | }; |
3451 | ||
4c52953f AM |
3452 | /* Rename some of the generic section flags to better document how they |
3453 | are used here. */ | |
3454 | #define has_toc_reloc has_gp_reloc | |
3455 | #define makes_toc_func_call need_finalize_relax | |
3456 | #define call_check_in_progress reloc_done | |
3457 | ||
65f38f15 AM |
3458 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3459 | ||
3460 | #define ppc_hash_table(p) \ | |
3461 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3462 | ||
721956f4 AM |
3463 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3464 | ((struct ppc_stub_hash_entry *) \ | |
3465 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3466 | ||
3467 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3468 | ((struct ppc_branch_hash_entry *) \ | |
3469 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3470 | ||
3471 | /* Create an entry in the stub hash table. */ | |
3472 | ||
3473 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3474 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3475 | struct bfd_hash_table *table, | |
3476 | const char *string) | |
721956f4 AM |
3477 | { |
3478 | /* Allocate the structure if it has not already been allocated by a | |
3479 | subclass. */ | |
3480 | if (entry == NULL) | |
3481 | { | |
3482 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3483 | if (entry == NULL) | |
3484 | return entry; | |
3485 | } | |
3486 | ||
3487 | /* Call the allocation method of the superclass. */ | |
3488 | entry = bfd_hash_newfunc (entry, table, string); | |
3489 | if (entry != NULL) | |
3490 | { | |
3491 | struct ppc_stub_hash_entry *eh; | |
3492 | ||
3493 | /* Initialize the local fields. */ | |
3494 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3495 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3496 | eh->stub_sec = NULL; |
3497 | eh->stub_offset = 0; | |
3498 | eh->target_value = 0; | |
3499 | eh->target_section = NULL; | |
721956f4 AM |
3500 | eh->h = NULL; |
3501 | eh->id_sec = NULL; | |
3502 | } | |
3503 | ||
3504 | return entry; | |
3505 | } | |
3506 | ||
3507 | /* Create an entry in the branch hash table. */ | |
3508 | ||
3509 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3510 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3511 | struct bfd_hash_table *table, | |
3512 | const char *string) | |
721956f4 AM |
3513 | { |
3514 | /* Allocate the structure if it has not already been allocated by a | |
3515 | subclass. */ | |
3516 | if (entry == NULL) | |
3517 | { | |
3518 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3519 | if (entry == NULL) | |
3520 | return entry; | |
3521 | } | |
3522 | ||
3523 | /* Call the allocation method of the superclass. */ | |
3524 | entry = bfd_hash_newfunc (entry, table, string); | |
3525 | if (entry != NULL) | |
3526 | { | |
3527 | struct ppc_branch_hash_entry *eh; | |
3528 | ||
3529 | /* Initialize the local fields. */ | |
3530 | eh = (struct ppc_branch_hash_entry *) entry; | |
3531 | eh->offset = 0; | |
3532 | eh->iter = 0; | |
3533 | } | |
3534 | ||
3535 | return entry; | |
3536 | } | |
3537 | ||
65f38f15 AM |
3538 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3539 | ||
3540 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3541 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3542 | struct bfd_hash_table *table, | |
3543 | const char *string) | |
65f38f15 AM |
3544 | { |
3545 | /* Allocate the structure if it has not already been allocated by a | |
3546 | subclass. */ | |
3547 | if (entry == NULL) | |
3548 | { | |
3549 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3550 | if (entry == NULL) | |
3551 | return entry; | |
3552 | } | |
3553 | ||
3554 | /* Call the allocation method of the superclass. */ | |
3555 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3556 | if (entry != NULL) | |
3557 | { | |
3558 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3559 | ||
b3fac117 | 3560 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3561 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3562 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3563 | ||
3564 | /* When making function calls, old ABI code references function entry | |
3565 | points (dot symbols), while new ABI code references the function | |
3566 | descriptor symbol. We need to make any combination of reference and | |
3567 | definition work together, without breaking archive linking. | |
3568 | ||
3569 | For a defined function "foo" and an undefined call to "bar": | |
3570 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3571 | "bar" too). | |
3572 | A new object defines "foo" and references "bar". | |
3573 | ||
3574 | A new object thus has no problem with its undefined symbols being | |
3575 | satisfied by definitions in an old object. On the other hand, the | |
3576 | old object won't have ".bar" satisfied by a new object. | |
3577 | ||
3578 | Keep a list of newly added dot-symbols. */ | |
3579 | ||
3580 | if (string[0] == '.') | |
3581 | { | |
3582 | struct ppc_link_hash_table *htab; | |
3583 | ||
3584 | htab = (struct ppc_link_hash_table *) table; | |
3585 | eh->u.next_dot_sym = htab->dot_syms; | |
3586 | htab->dot_syms = eh; | |
3587 | } | |
65f38f15 AM |
3588 | } |
3589 | ||
3590 | return entry; | |
3591 | } | |
3592 | ||
3593 | /* Create a ppc64 ELF linker hash table. */ | |
3594 | ||
3595 | static struct bfd_link_hash_table * | |
4ce794b7 | 3596 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3597 | { |
3598 | struct ppc_link_hash_table *htab; | |
3599 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3600 | ||
4ce794b7 | 3601 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3602 | if (htab == NULL) |
3603 | return NULL; | |
3604 | ||
66eb6687 AM |
3605 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3606 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3607 | { |
e2d34d7d | 3608 | free (htab); |
65f38f15 AM |
3609 | return NULL; |
3610 | } | |
3611 | ||
721956f4 | 3612 | /* Init the stub hash table too. */ |
66eb6687 AM |
3613 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3614 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3615 | return NULL; |
3616 | ||
3617 | /* And the branch hash table. */ | |
66eb6687 AM |
3618 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3619 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3620 | return NULL; |
3621 | ||
3254fd24 AM |
3622 | /* Initializing two fields of the union is just cosmetic. We really |
3623 | only care about glist, but when compiled on a 32-bit host the | |
3624 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3625 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3626 | htab->elf.init_got_refcount.refcount = 0; |
3627 | htab->elf.init_got_refcount.glist = NULL; | |
3628 | htab->elf.init_plt_refcount.refcount = 0; | |
3629 | htab->elf.init_plt_refcount.glist = NULL; | |
3630 | htab->elf.init_got_offset.offset = 0; | |
3631 | htab->elf.init_got_offset.glist = NULL; | |
3632 | htab->elf.init_plt_offset.offset = 0; | |
3633 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3634 | |
65f38f15 AM |
3635 | return &htab->elf.root; |
3636 | } | |
3637 | ||
721956f4 AM |
3638 | /* Free the derived linker hash table. */ |
3639 | ||
3640 | static void | |
4ce794b7 | 3641 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3642 | { |
3643 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3644 | ||
3645 | bfd_hash_table_free (&ret->stub_hash_table); | |
3646 | bfd_hash_table_free (&ret->branch_hash_table); | |
3647 | _bfd_generic_link_hash_table_free (hash); | |
3648 | } | |
3649 | ||
e717da7e AM |
3650 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3651 | ||
3652 | void | |
3653 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3654 | { | |
3655 | struct ppc_link_hash_table *htab; | |
3656 | ||
3657 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3658 | ||
3659 | /* Always hook our dynamic sections into the first bfd, which is the | |
3660 | linker created stub bfd. This ensures that the GOT header is at | |
3661 | the start of the output TOC section. */ | |
3662 | htab = ppc_hash_table (info); | |
3663 | htab->stub_bfd = abfd; | |
3664 | htab->elf.dynobj = abfd; | |
3665 | } | |
3666 | ||
721956f4 AM |
3667 | /* Build a name for an entry in the stub hash table. */ |
3668 | ||
3669 | static char * | |
4ce794b7 AM |
3670 | ppc_stub_name (const asection *input_section, |
3671 | const asection *sym_sec, | |
3672 | const struct ppc_link_hash_entry *h, | |
3673 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3674 | { |
3675 | char *stub_name; | |
3676 | bfd_size_type len; | |
3677 | ||
3678 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3679 | offsets from a sym as a branch target? In fact, we could | |
3680 | probably assume the addend is always zero. */ | |
3681 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3682 | ||
3683 | if (h) | |
3684 | { | |
3685 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3686 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3687 | if (stub_name == NULL) |
3688 | return stub_name; | |
3689 | ||
3690 | sprintf (stub_name, "%08x.%s+%x", | |
3691 | input_section->id & 0xffffffff, | |
3692 | h->elf.root.root.string, | |
3693 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3694 | } |
3695 | else | |
3696 | { | |
ad8e1ba5 | 3697 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3698 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3699 | if (stub_name == NULL) |
3700 | return stub_name; | |
3701 | ||
3702 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3703 | input_section->id & 0xffffffff, | |
3704 | sym_sec->id & 0xffffffff, | |
3705 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3706 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3707 | } |
ee75fd95 AM |
3708 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3709 | stub_name[len - 2] = 0; | |
721956f4 AM |
3710 | return stub_name; |
3711 | } | |
3712 | ||
3713 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3714 | creating the stub name takes a bit of time. */ | |
3715 | ||
3716 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3717 | ppc_get_stub_entry (const asection *input_section, |
3718 | const asection *sym_sec, | |
039b3fef | 3719 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3720 | const Elf_Internal_Rela *rel, |
3721 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3722 | { |
3723 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3724 | const asection *id_sec; |
3725 | ||
3726 | /* If this input section is part of a group of sections sharing one | |
3727 | stub section, then use the id of the first section in the group. | |
3728 | Stub names need to include a section id, as there may well be | |
3729 | more than one stub used to reach say, printf, and we need to | |
3730 | distinguish between them. */ | |
3731 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3732 | ||
b3fac117 AM |
3733 | if (h != NULL && h->u.stub_cache != NULL |
3734 | && h->u.stub_cache->h == h | |
3735 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3736 | { |
b3fac117 | 3737 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3738 | } |
3739 | else | |
3740 | { | |
3741 | char *stub_name; | |
3742 | ||
3743 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3744 | if (stub_name == NULL) | |
3745 | return NULL; | |
3746 | ||
3747 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3748 | stub_name, FALSE, FALSE); |
721956f4 | 3749 | if (h != NULL) |
b3fac117 | 3750 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3751 | |
3752 | free (stub_name); | |
3753 | } | |
3754 | ||
3755 | return stub_entry; | |
3756 | } | |
3757 | ||
3758 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3759 | stub entry are initialised. */ | |
3760 | ||
3761 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3762 | ppc_add_stub (const char *stub_name, |
3763 | asection *section, | |
3764 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3765 | { |
3766 | asection *link_sec; | |
3767 | asection *stub_sec; | |
3768 | struct ppc_stub_hash_entry *stub_entry; | |
3769 | ||
3770 | link_sec = htab->stub_group[section->id].link_sec; | |
3771 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3772 | if (stub_sec == NULL) | |
3773 | { | |
3774 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3775 | if (stub_sec == NULL) | |
3776 | { | |
d4c88bbb | 3777 | size_t namelen; |
721956f4 AM |
3778 | bfd_size_type len; |
3779 | char *s_name; | |
3780 | ||
d4c88bbb AM |
3781 | namelen = strlen (link_sec->name); |
3782 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3783 | s_name = bfd_alloc (htab->stub_bfd, len); |
3784 | if (s_name == NULL) | |
3785 | return NULL; | |
3786 | ||
d4c88bbb AM |
3787 | memcpy (s_name, link_sec->name, namelen); |
3788 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3789 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3790 | if (stub_sec == NULL) | |
3791 | return NULL; | |
3792 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3793 | } | |
3794 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3795 | } | |
3796 | ||
3797 | /* Enter this entry into the linker stub hash table. */ | |
3798 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3799 | TRUE, FALSE); |
721956f4 AM |
3800 | if (stub_entry == NULL) |
3801 | { | |
d003868e AM |
3802 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3803 | section->owner, stub_name); | |
721956f4 AM |
3804 | return NULL; |
3805 | } | |
3806 | ||
3807 | stub_entry->stub_sec = stub_sec; | |
3808 | stub_entry->stub_offset = 0; | |
3809 | stub_entry->id_sec = link_sec; | |
3810 | return stub_entry; | |
3811 | } | |
3812 | ||
82bd7b59 AM |
3813 | /* Create sections for linker generated code. */ |
3814 | ||
b34976b6 | 3815 | static bfd_boolean |
4ce794b7 | 3816 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3817 | { |
3818 | struct ppc_link_hash_table *htab; | |
3819 | flagword flags; | |
3820 | ||
3821 | htab = ppc_hash_table (info); | |
3822 | ||
3823 | /* Create .sfpr for code to save and restore fp regs. */ | |
3824 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3825 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3826 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3827 | flags); | |
82bd7b59 | 3828 | if (htab->sfpr == NULL |
82bd7b59 | 3829 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3830 | return FALSE; |
82bd7b59 | 3831 | |
721956f4 | 3832 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3833 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3834 | flags); | |
4ce794b7 | 3835 | if (htab->glink == NULL |
ee4bf8d2 | 3836 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 3837 | return FALSE; |
82bd7b59 | 3838 | |
c456f082 | 3839 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
3840 | flags = (SEC_ALLOC | SEC_LOAD |
3841 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3842 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3843 | flags); | |
4ce794b7 | 3844 | if (htab->brlt == NULL |
4ce794b7 | 3845 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3846 | return FALSE; |
721956f4 | 3847 | |
e4e0193e | 3848 | if (!info->shared) |
c456f082 AM |
3849 | return TRUE; |
3850 | ||
e4e0193e AM |
3851 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
3852 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3853 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
3854 | ".rela.branch_lt", | |
3855 | flags); | |
c456f082 AM |
3856 | if (!htab->relbrlt |
3857 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3858 | return FALSE; | |
3859 | ||
b34976b6 | 3860 | return TRUE; |
82bd7b59 AM |
3861 | } |
3862 | ||
e717da7e AM |
3863 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3864 | not already done. */ | |
65f38f15 | 3865 | |
b34976b6 | 3866 | static bfd_boolean |
e717da7e | 3867 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3868 | { |
e717da7e AM |
3869 | asection *got, *relgot; |
3870 | flagword flags; | |
3871 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3872 | |
4ce794b7 | 3873 | if (!htab->got) |
e717da7e AM |
3874 | { |
3875 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3876 | return FALSE; | |
3877 | ||
3878 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3879 | if (!htab->got) | |
3880 | abort (); | |
3881 | } | |
3882 | ||
3883 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3884 | | SEC_LINKER_CREATED); | |
3885 | ||
c456f082 | 3886 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3887 | if (!got |
e717da7e AM |
3888 | || !bfd_set_section_alignment (abfd, got, 3)) |
3889 | return FALSE; | |
65f38f15 | 3890 | |
c456f082 AM |
3891 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3892 | flags | SEC_READONLY); | |
e717da7e | 3893 | if (!relgot |
e717da7e | 3894 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3895 | return FALSE; |
e717da7e AM |
3896 | |
3897 | ppc64_elf_tdata (abfd)->got = got; | |
3898 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3899 | return TRUE; |
65f38f15 | 3900 | } |
5bd4f169 | 3901 | |
82bd7b59 | 3902 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3903 | |
b34976b6 | 3904 | static bfd_boolean |
4ce794b7 | 3905 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3906 | { |
65f38f15 | 3907 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3908 | |
65f38f15 | 3909 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3910 | return FALSE; |
65f38f15 | 3911 | |
e717da7e AM |
3912 | htab = ppc_hash_table (info); |
3913 | if (!htab->got) | |
3914 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3915 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3916 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3917 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3918 | if (!info->shared) |
4ce794b7 | 3919 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3920 | |
e717da7e | 3921 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3922 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3923 | abort (); |
3924 | ||
b34976b6 | 3925 | return TRUE; |
5bd4f169 AM |
3926 | } |
3927 | ||
40d16e0b AM |
3928 | /* Merge PLT info on FROM with that on TO. */ |
3929 | ||
3930 | static void | |
3931 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3932 | struct ppc_link_hash_entry *to) | |
3933 | { | |
3934 | if (from->elf.plt.plist != NULL) | |
3935 | { | |
3936 | if (to->elf.plt.plist != NULL) | |
3937 | { | |
3938 | struct plt_entry **entp; | |
3939 | struct plt_entry *ent; | |
3940 | ||
3941 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3942 | { | |
3943 | struct plt_entry *dent; | |
3944 | ||
3945 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3946 | if (dent->addend == ent->addend) | |
3947 | { | |
3948 | dent->plt.refcount += ent->plt.refcount; | |
3949 | *entp = ent->next; | |
3950 | break; | |
3951 | } | |
3952 | if (dent == NULL) | |
3953 | entp = &ent->next; | |
3954 | } | |
3955 | *entp = to->elf.plt.plist; | |
3956 | } | |
3957 | ||
3958 | to->elf.plt.plist = from->elf.plt.plist; | |
3959 | from->elf.plt.plist = NULL; | |
3960 | } | |
3961 | } | |
3962 | ||
65f38f15 AM |
3963 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3964 | ||
3965 | static void | |
fcfa13d2 AM |
3966 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3967 | struct elf_link_hash_entry *dir, | |
3968 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3969 | { |
3970 | struct ppc_link_hash_entry *edir, *eind; | |
3971 | ||
3972 | edir = (struct ppc_link_hash_entry *) dir; | |
3973 | eind = (struct ppc_link_hash_entry *) ind; | |
3974 | ||
411e1bfb | 3975 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3976 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3977 | { |
bbd7ec4a AM |
3978 | if (edir->dyn_relocs != NULL) |
3979 | { | |
3980 | struct ppc_dyn_relocs **pp; | |
3981 | struct ppc_dyn_relocs *p; | |
3982 | ||
fcfa13d2 | 3983 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3984 | list. Merge any entries against the same section. */ |
3985 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3986 | { | |
3987 | struct ppc_dyn_relocs *q; | |
3988 | ||
3989 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3990 | if (q->sec == p->sec) | |
3991 | { | |
3992 | q->pc_count += p->pc_count; | |
3993 | q->count += p->count; | |
3994 | *pp = p->next; | |
3995 | break; | |
3996 | } | |
3997 | if (q == NULL) | |
3998 | pp = &p->next; | |
3999 | } | |
4000 | *pp = edir->dyn_relocs; | |
4001 | } | |
4002 | ||
65f38f15 AM |
4003 | edir->dyn_relocs = eind->dyn_relocs; |
4004 | eind->dyn_relocs = NULL; | |
4005 | } | |
65f38f15 | 4006 | |
6349e628 AM |
4007 | edir->is_func |= eind->is_func; |
4008 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4009 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4010 | |
81848ca0 | 4011 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4012 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4013 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4014 | if (!(ELIMINATE_COPY_RELOCS |
4015 | && eind->elf.root.type != bfd_link_hash_indirect | |
4016 | && edir->elf.dynamic_adjusted)) | |
4017 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4018 | |
f5385ebf AM |
4019 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4020 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4021 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4022 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4023 | |
4024 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4025 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4026 | return; | |
4027 | ||
81848ca0 AM |
4028 | /* Copy over got entries that we may have already seen to the |
4029 | symbol which just became indirect. */ | |
411e1bfb AM |
4030 | if (eind->elf.got.glist != NULL) |
4031 | { | |
4032 | if (edir->elf.got.glist != NULL) | |
4033 | { | |
4034 | struct got_entry **entp; | |
4035 | struct got_entry *ent; | |
4036 | ||
4037 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4038 | { | |
4039 | struct got_entry *dent; | |
4040 | ||
4041 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4042 | if (dent->addend == ent->addend | |
e717da7e | 4043 | && dent->owner == ent->owner |
411e1bfb AM |
4044 | && dent->tls_type == ent->tls_type) |
4045 | { | |
4046 | dent->got.refcount += ent->got.refcount; | |
4047 | *entp = ent->next; | |
4048 | break; | |
4049 | } | |
4050 | if (dent == NULL) | |
4051 | entp = &ent->next; | |
4052 | } | |
4053 | *entp = edir->elf.got.glist; | |
4054 | } | |
4055 | ||
4056 | edir->elf.got.glist = eind->elf.got.glist; | |
4057 | eind->elf.got.glist = NULL; | |
4058 | } | |
4059 | ||
4060 | /* And plt entries. */ | |
40d16e0b | 4061 | move_plt_plist (eind, edir); |
411e1bfb | 4062 | |
fcfa13d2 | 4063 | if (eind->elf.dynindx != -1) |
411e1bfb | 4064 | { |
fcfa13d2 AM |
4065 | if (edir->elf.dynindx != -1) |
4066 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4067 | edir->elf.dynstr_index); | |
411e1bfb AM |
4068 | edir->elf.dynindx = eind->elf.dynindx; |
4069 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4070 | eind->elf.dynindx = -1; | |
4071 | eind->elf.dynstr_index = 0; | |
4072 | } | |
411e1bfb AM |
4073 | } |
4074 | ||
8387904d AM |
4075 | /* Find the function descriptor hash entry from the given function code |
4076 | hash entry FH. Link the entries via their OH fields. */ | |
4077 | ||
4078 | static struct ppc_link_hash_entry * | |
4079 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4080 | { | |
4081 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4082 | ||
4083 | if (fdh == NULL) | |
4084 | { | |
4085 | const char *fd_name = fh->elf.root.root.string + 1; | |
4086 | ||
4087 | fdh = (struct ppc_link_hash_entry *) | |
4088 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4089 | if (fdh != NULL) | |
4090 | { | |
4091 | fdh->is_func_descriptor = 1; | |
4092 | fdh->oh = fh; | |
4093 | fh->is_func = 1; | |
4094 | fh->oh = fdh; | |
4095 | } | |
4096 | } | |
4097 | ||
4098 | return fdh; | |
4099 | } | |
4100 | ||
bb700d78 AM |
4101 | /* Make a fake function descriptor sym for the code sym FH. */ |
4102 | ||
4103 | static struct ppc_link_hash_entry * | |
4104 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4105 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4106 | { |
4107 | bfd *abfd; | |
4108 | asymbol *newsym; | |
4109 | struct bfd_link_hash_entry *bh; | |
4110 | struct ppc_link_hash_entry *fdh; | |
4111 | ||
4112 | abfd = fh->elf.root.u.undef.abfd; | |
4113 | newsym = bfd_make_empty_symbol (abfd); | |
4114 | newsym->name = fh->elf.root.root.string + 1; | |
4115 | newsym->section = bfd_und_section_ptr; | |
4116 | newsym->value = 0; | |
908b32fc | 4117 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4118 | |
4119 | bh = NULL; | |
4120 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4121 | newsym->flags, newsym->section, | |
4122 | newsym->value, NULL, FALSE, FALSE, | |
4123 | &bh)) | |
4124 | return NULL; | |
4125 | ||
4126 | fdh = (struct ppc_link_hash_entry *) bh; | |
4127 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4128 | fdh->fake = 1; |
4129 | fdh->is_func_descriptor = 1; | |
4130 | fdh->oh = fh; | |
4131 | fh->is_func = 1; | |
4132 | fh->oh = fdh; | |
bb700d78 AM |
4133 | return fdh; |
4134 | } | |
4135 | ||
8387904d AM |
4136 | /* Fix function descriptor symbols defined in .opd sections to be |
4137 | function type. */ | |
555cd476 AM |
4138 | |
4139 | static bfd_boolean | |
b3fac117 | 4140 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4141 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4142 | Elf_Internal_Sym *isym, | |
b3fac117 | 4143 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4144 | flagword *flags ATTRIBUTE_UNUSED, |
4145 | asection **sec, | |
4146 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4147 | { | |
8843416a AM |
4148 | if (*sec != NULL |
4149 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4150 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4151 | |
555cd476 AM |
4152 | return TRUE; |
4153 | } | |
4154 | ||
8387904d | 4155 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4156 | inclusion of a new ABI object archive that defines "bar". |
4157 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4158 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4159 | |
4160 | static struct elf_link_hash_entry * | |
4161 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4162 | struct bfd_link_info *info, | |
4163 | const char *name) | |
4164 | { | |
4165 | struct elf_link_hash_entry *h; | |
4166 | char *dot_name; | |
4167 | size_t len; | |
4168 | ||
4169 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4170 | if (h != NULL |
4171 | /* Don't return this sym if it is a fake function descriptor | |
4172 | created by add_symbol_adjust. */ | |
4173 | && !(h->root.type == bfd_link_hash_undefweak | |
4174 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4175 | return h; |
4176 | ||
4177 | if (name[0] == '.') | |
4178 | return h; | |
4179 | ||
4180 | len = strlen (name); | |
4181 | dot_name = bfd_alloc (abfd, len + 2); | |
4182 | if (dot_name == NULL) | |
4183 | return (struct elf_link_hash_entry *) 0 - 1; | |
4184 | dot_name[0] = '.'; | |
4185 | memcpy (dot_name + 1, name, len + 1); | |
4186 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4187 | bfd_release (abfd, dot_name); | |
4188 | return h; | |
4189 | } | |
4190 | ||
4191 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4192 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4193 | are made weak. This stops later archive searches from including an | |
4194 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4195 | prevents the linker complaining about undefined symbols. |
4196 | We also check and correct mismatched symbol visibility here. The | |
4197 | most restrictive visibility of the function descriptor and the | |
4198 | function entry symbol is used. */ | |
8387904d AM |
4199 | |
4200 | static bfd_boolean | |
b3fac117 | 4201 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4202 | { |
8387904d AM |
4203 | struct ppc_link_hash_table *htab; |
4204 | struct ppc_link_hash_entry *fdh; | |
4205 | ||
b3fac117 | 4206 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4207 | return TRUE; |
4208 | ||
b3fac117 AM |
4209 | if (eh->elf.root.type == bfd_link_hash_warning) |
4210 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4211 | |
b3fac117 AM |
4212 | if (eh->elf.root.root.string[0] != '.') |
4213 | abort (); | |
8387904d | 4214 | |
b3fac117 | 4215 | htab = ppc_hash_table (info); |
99877b66 | 4216 | fdh = get_fdh (eh, htab); |
bb700d78 | 4217 | if (fdh == NULL |
b3fac117 | 4218 | && !info->relocatable |
bb700d78 AM |
4219 | && (eh->elf.root.type == bfd_link_hash_undefined |
4220 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4221 | && eh->elf.ref_regular) | |
4222 | { | |
4223 | /* Make an undefweak function descriptor sym, which is enough to | |
4224 | pull in an --as-needed shared lib, but won't cause link | |
4225 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4226 | fdh = make_fdh (info, eh); |
bb700d78 | 4227 | if (fdh == NULL) |
b3fac117 | 4228 | return FALSE; |
bb700d78 AM |
4229 | else |
4230 | fdh->elf.ref_regular = 1; | |
4231 | } | |
e87d886e | 4232 | else if (fdh != NULL) |
8387904d | 4233 | { |
35b0ce59 AM |
4234 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4235 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4236 | if (entry_vis < descr_vis) | |
4237 | fdh->elf.other += entry_vis - descr_vis; | |
4238 | else if (entry_vis > descr_vis) | |
4239 | eh->elf.other += descr_vis - entry_vis; | |
4240 | ||
e87d886e AM |
4241 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4242 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4243 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4244 | { |
4245 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4246 | eh->was_undefined = 1; | |
4247 | htab->twiddled_syms = 1; | |
4248 | } | |
8387904d | 4249 | } |
99877b66 | 4250 | |
8387904d AM |
4251 | return TRUE; |
4252 | } | |
4253 | ||
b3fac117 AM |
4254 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4255 | ||
8387904d | 4256 | static bfd_boolean |
b3fac117 | 4257 | ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4258 | { |
99877b66 | 4259 | struct ppc_link_hash_table *htab; |
b3fac117 | 4260 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4261 | |
99877b66 | 4262 | htab = ppc_hash_table (info); |
ee75fd95 | 4263 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4264 | return TRUE; |
4265 | ||
b3fac117 AM |
4266 | if (is_ppc64_elf_target (ibfd->xvec)) |
4267 | { | |
4268 | p = &htab->dot_syms; | |
4269 | while ((eh = *p) != NULL) | |
4270 | { | |
4271 | *p = NULL; | |
4272 | if (!add_symbol_adjust (eh, info)) | |
4273 | return FALSE; | |
4274 | p = &eh->u.next_dot_sym; | |
4275 | } | |
4276 | } | |
4277 | ||
4278 | /* Clear the list for non-ppc64 input files. */ | |
4279 | p = &htab->dot_syms; | |
4280 | while ((eh = *p) != NULL) | |
4281 | { | |
4282 | *p = NULL; | |
4283 | p = &eh->u.next_dot_sym; | |
4284 | } | |
99877b66 AM |
4285 | |
4286 | /* We need to fix the undefs list for any syms we have twiddled to | |
4287 | undef_weak. */ | |
4288 | if (htab->twiddled_syms) | |
4289 | { | |
77cfaee6 | 4290 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4291 | htab->twiddled_syms = 0; |
4292 | } | |
b3fac117 | 4293 | return TRUE; |
8387904d AM |
4294 | } |
4295 | ||
97fed1c9 JJ |
4296 | /* Undo hash table changes when an --as-needed input file is determined |
4297 | not to be needed. */ | |
4298 | ||
4299 | static bfd_boolean | |
4300 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4301 | struct bfd_link_info *info) | |
4302 | { | |
4303 | ppc_hash_table (info)->dot_syms = NULL; | |
4304 | return TRUE; | |
4305 | } | |
4306 | ||
411e1bfb | 4307 | static bfd_boolean |
4ce794b7 AM |
4308 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4309 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4310 | { |
4311 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4312 | char *local_got_tls_masks; |
411e1bfb AM |
4313 | |
4314 | if (local_got_ents == NULL) | |
4315 | { | |
4316 | bfd_size_type size = symtab_hdr->sh_info; | |
4317 | ||
e7b938ca | 4318 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4319 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4320 | if (local_got_ents == NULL) |
4321 | return FALSE; | |
4322 | elf_local_got_ents (abfd) = local_got_ents; | |
4323 | } | |
4324 | ||
4325 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4326 | { | |
4327 | struct got_entry *ent; | |
4328 | ||
4329 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4330 | if (ent->addend == r_addend |
4331 | && ent->owner == abfd | |
4332 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4333 | break; |
4334 | if (ent == NULL) | |
4335 | { | |
4336 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4337 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4338 | if (ent == NULL) |
4339 | return FALSE; | |
4340 | ent->next = local_got_ents[r_symndx]; | |
4341 | ent->addend = r_addend; | |
e717da7e | 4342 | ent->owner = abfd; |
411e1bfb AM |
4343 | ent->tls_type = tls_type; |
4344 | ent->got.refcount = 0; | |
4345 | local_got_ents[r_symndx] = ent; | |
4346 | } | |
4347 | ent->got.refcount += 1; | |
4348 | } | |
4349 | ||
e7b938ca AM |
4350 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4351 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4352 | return TRUE; |
65f38f15 AM |
4353 | } |
4354 | ||
411e1bfb | 4355 | static bfd_boolean |
4ce794b7 | 4356 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4357 | { |
411e1bfb | 4358 | struct plt_entry *ent; |
1e2f5b6e | 4359 | |
411e1bfb AM |
4360 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4361 | if (ent->addend == addend) | |
4362 | break; | |
4363 | if (ent == NULL) | |
1e2f5b6e | 4364 | { |
411e1bfb | 4365 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4366 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4367 | if (ent == NULL) |
4368 | return FALSE; | |
4369 | ent->next = eh->elf.plt.plist; | |
4370 | ent->addend = addend; | |
4371 | ent->plt.refcount = 0; | |
4372 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4373 | } |
411e1bfb | 4374 | ent->plt.refcount += 1; |
f5385ebf | 4375 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4376 | if (eh->elf.root.root.string[0] == '.' |
4377 | && eh->elf.root.root.string[1] != '\0') | |
4378 | eh->is_func = 1; | |
b34976b6 | 4379 | return TRUE; |
1e2f5b6e AM |
4380 | } |
4381 | ||
5bd4f169 | 4382 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4383 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4384 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4385 | |
b34976b6 | 4386 | static bfd_boolean |
4ce794b7 AM |
4387 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4388 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4389 | { |
65f38f15 | 4390 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4391 | Elf_Internal_Shdr *symtab_hdr; |
4392 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4393 | const Elf_Internal_Rela *rel; | |
4394 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4395 | asection *sreloc; |
1e2f5b6e | 4396 | asection **opd_sym_map; |
5bd4f169 | 4397 | |
1049f94e | 4398 | if (info->relocatable) |
b34976b6 | 4399 | return TRUE; |
5bd4f169 | 4400 | |
680a3378 AM |
4401 | /* Don't do anything special with non-loaded, non-alloced sections. |
4402 | In particular, any relocs in such sections should not affect GOT | |
4403 | and PLT reference counting (ie. we don't allow them to create GOT | |
4404 | or PLT entries), there's no possibility or desire to optimize TLS | |
4405 | relocs, and there's not much point in propagating relocs to shared | |
4406 | libs that the dynamic linker won't relocate. */ | |
4407 | if ((sec->flags & SEC_ALLOC) == 0) | |
4408 | return TRUE; | |
4409 | ||
65f38f15 | 4410 | htab = ppc_hash_table (info); |
5bd4f169 | 4411 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4412 | |
4413 | sym_hashes = elf_sym_hashes (abfd); | |
4414 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4415 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4416 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4417 | |
4418 | sreloc = NULL; | |
1e2f5b6e AM |
4419 | opd_sym_map = NULL; |
4420 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4421 | { | |
4422 | /* Garbage collection needs some extra help with .opd sections. | |
4423 | We don't want to necessarily keep everything referenced by | |
4424 | relocs in .opd, as that would keep all functions. Instead, | |
4425 | if we reference an .opd symbol (a function descriptor), we | |
4426 | want to keep the function code symbol's section. This is | |
4427 | easy for global symbols, but for local syms we need to keep | |
4428 | information about the associated function section. Later, if | |
4429 | edit_opd deletes entries, we'll use this array to adjust | |
4430 | local syms in .opd. */ | |
4431 | union opd_info { | |
4432 | asection *func_section; | |
4433 | long entry_adjust; | |
4434 | }; | |
4435 | bfd_size_type amt; | |
4436 | ||
3f764659 | 4437 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4438 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4439 | if (opd_sym_map == NULL) |
b34976b6 | 4440 | return FALSE; |
7c8fe5c4 AM |
4441 | ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map; |
4442 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
4443 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4444 | } |
5bd4f169 | 4445 | |
82bd7b59 AM |
4446 | if (htab->sfpr == NULL |
4447 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4448 | return FALSE; |
82bd7b59 | 4449 | |
5bd4f169 AM |
4450 | rel_end = relocs + sec->reloc_count; |
4451 | for (rel = relocs; rel < rel_end; rel++) | |
4452 | { | |
4453 | unsigned long r_symndx; | |
4454 | struct elf_link_hash_entry *h; | |
04c9666a | 4455 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4456 | int tls_type = 0; |
7c8fe5c4 | 4457 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4458 | |
4459 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4460 | if (r_symndx < symtab_hdr->sh_info) | |
4461 | h = NULL; | |
4462 | else | |
973a3492 L |
4463 | { |
4464 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4465 | while (h->root.type == bfd_link_hash_indirect | |
4466 | || h->root.type == bfd_link_hash_warning) | |
4467 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4468 | } | |
5bd4f169 | 4469 | |
4ce794b7 | 4470 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4471 | switch (r_type) |
5bd4f169 | 4472 | { |
411e1bfb AM |
4473 | case R_PPC64_GOT_TLSLD16: |
4474 | case R_PPC64_GOT_TLSLD16_LO: | |
4475 | case R_PPC64_GOT_TLSLD16_HI: | |
4476 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4477 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4478 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4479 | goto dogottls; |
4480 | ||
4481 | case R_PPC64_GOT_TLSGD16: | |
4482 | case R_PPC64_GOT_TLSGD16_LO: | |
4483 | case R_PPC64_GOT_TLSGD16_HI: | |
4484 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4485 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4486 | goto dogottls; |
4487 | ||
4488 | case R_PPC64_GOT_TPREL16_DS: | |
4489 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4490 | case R_PPC64_GOT_TPREL16_HI: | |
4491 | case R_PPC64_GOT_TPREL16_HA: | |
4492 | if (info->shared) | |
4493 | info->flags |= DF_STATIC_TLS; | |
4494 | tls_type = TLS_TLS | TLS_TPREL; | |
4495 | goto dogottls; | |
4496 | ||
4497 | case R_PPC64_GOT_DTPREL16_DS: | |
4498 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4499 | case R_PPC64_GOT_DTPREL16_HI: | |
4500 | case R_PPC64_GOT_DTPREL16_HA: | |
4501 | tls_type = TLS_TLS | TLS_DTPREL; | |
4502 | dogottls: | |
4503 | sec->has_tls_reloc = 1; | |
4504 | /* Fall thru */ | |
4505 | ||
5bd4f169 | 4506 | case R_PPC64_GOT16: |
5bd4f169 | 4507 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4508 | case R_PPC64_GOT16_HA: |
4509 | case R_PPC64_GOT16_HI: | |
4510 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4511 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4512 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4513 | sec->has_toc_reloc = 1; |
e717da7e AM |
4514 | if (ppc64_elf_tdata (abfd)->got == NULL |
4515 | && !create_got_section (abfd, info)) | |
b34976b6 | 4516 | return FALSE; |
5bd4f169 AM |
4517 | |
4518 | if (h != NULL) | |
4519 | { | |
411e1bfb AM |
4520 | struct ppc_link_hash_entry *eh; |
4521 | struct got_entry *ent; | |
65f38f15 | 4522 | |
411e1bfb AM |
4523 | eh = (struct ppc_link_hash_entry *) h; |
4524 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4525 | if (ent->addend == rel->r_addend | |
e717da7e | 4526 | && ent->owner == abfd |
411e1bfb AM |
4527 | && ent->tls_type == tls_type) |
4528 | break; | |
4529 | if (ent == NULL) | |
5bd4f169 | 4530 | { |
411e1bfb | 4531 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4532 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4533 | if (ent == NULL) |
b34976b6 | 4534 | return FALSE; |
411e1bfb AM |
4535 | ent->next = eh->elf.got.glist; |
4536 | ent->addend = rel->r_addend; | |
e717da7e | 4537 | ent->owner = abfd; |
411e1bfb AM |
4538 | ent->tls_type = tls_type; |
4539 | ent->got.refcount = 0; | |
4540 | eh->elf.got.glist = ent; | |
5bd4f169 | 4541 | } |
411e1bfb | 4542 | ent->got.refcount += 1; |
e7b938ca | 4543 | eh->tls_mask |= tls_type; |
5bd4f169 | 4544 | } |
411e1bfb AM |
4545 | else |
4546 | /* This is a global offset table entry for a local symbol. */ | |
4547 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4548 | rel->r_addend, tls_type)) | |
4549 | return FALSE; | |
5bd4f169 AM |
4550 | break; |
4551 | ||
5bd4f169 | 4552 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4553 | case R_PPC64_PLT16_HI: |
4554 | case R_PPC64_PLT16_LO: | |
4555 | case R_PPC64_PLT32: | |
4556 | case R_PPC64_PLT64: | |
5bd4f169 | 4557 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4558 | actually build the entry in adjust_dynamic_symbol, |
4559 | because this might be a case of linking PIC code without | |
4560 | linking in any dynamic objects, in which case we don't | |
4561 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4562 | if (h == NULL) |
4563 | { | |
4564 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4565 | table entry for a local symbol. */ |
5bd4f169 | 4566 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4567 | return FALSE; |
5bd4f169 | 4568 | } |
411e1bfb AM |
4569 | else |
4570 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4571 | rel->r_addend)) | |
4572 | return FALSE; | |
5bd4f169 AM |
4573 | break; |
4574 | ||
4575 | /* The following relocations don't need to propagate the | |
4576 | relocation if linking a shared object since they are | |
4577 | section relative. */ | |
4578 | case R_PPC64_SECTOFF: | |
4579 | case R_PPC64_SECTOFF_LO: | |
4580 | case R_PPC64_SECTOFF_HI: | |
4581 | case R_PPC64_SECTOFF_HA: | |
4582 | case R_PPC64_SECTOFF_DS: | |
4583 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4584 | case R_PPC64_DTPREL16: |
4585 | case R_PPC64_DTPREL16_LO: | |
4586 | case R_PPC64_DTPREL16_HI: | |
4587 | case R_PPC64_DTPREL16_HA: | |
4588 | case R_PPC64_DTPREL16_DS: | |
4589 | case R_PPC64_DTPREL16_LO_DS: | |
4590 | case R_PPC64_DTPREL16_HIGHER: | |
4591 | case R_PPC64_DTPREL16_HIGHERA: | |
4592 | case R_PPC64_DTPREL16_HIGHEST: | |
4593 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4594 | break; |
4595 | ||
ad8e1ba5 AM |
4596 | /* Nor do these. */ |
4597 | case R_PPC64_TOC16: | |
4598 | case R_PPC64_TOC16_LO: | |
4599 | case R_PPC64_TOC16_HI: | |
4600 | case R_PPC64_TOC16_HA: | |
4601 | case R_PPC64_TOC16_DS: | |
4602 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4603 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4604 | break; |
4605 | ||
5bd4f169 AM |
4606 | /* This relocation describes the C++ object vtable hierarchy. |
4607 | Reconstruct it for later use during GC. */ | |
4608 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4609 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4610 | return FALSE; |
5bd4f169 AM |
4611 | break; |
4612 | ||
4613 | /* This relocation describes which C++ vtable entries are actually | |
4614 | used. Record for later use during GC. */ | |
4615 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4616 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4617 | return FALSE; |
5bd4f169 AM |
4618 | break; |
4619 | ||
721956f4 AM |
4620 | case R_PPC64_REL14: |
4621 | case R_PPC64_REL14_BRTAKEN: | |
4622 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4623 | { |
4624 | asection *dest = NULL; | |
4625 | ||
4626 | /* Heuristic: If jumping outside our section, chances are | |
4627 | we are going to need a stub. */ | |
4628 | if (h != NULL) | |
4629 | { | |
4630 | /* If the sym is weak it may be overridden later, so | |
4631 | don't assume we know where a weak sym lives. */ | |
4632 | if (h->root.type == bfd_link_hash_defined) | |
4633 | dest = h->root.u.def.section; | |
4634 | } | |
4635 | else | |
4636 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4637 | sec, r_symndx); | |
4638 | if (dest != sec) | |
7c8fe5c4 | 4639 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4640 | } |
721956f4 AM |
4641 | /* Fall through. */ |
4642 | ||
5d1634d7 | 4643 | case R_PPC64_REL24: |
8387904d | 4644 | if (h != NULL) |
5d1634d7 AM |
4645 | { |
4646 | /* We may need a .plt entry if the function this reloc | |
4647 | refers to is in a shared lib. */ | |
411e1bfb AM |
4648 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4649 | rel->r_addend)) | |
4650 | return FALSE; | |
8387904d AM |
4651 | if (h == &htab->tls_get_addr->elf |
4652 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4653 | sec->has_tls_reloc = 1; |
8387904d | 4654 | else if (htab->tls_get_addr == NULL |
0112cd26 | 4655 | && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr") |
a48ebf4d AM |
4656 | && (h->root.root.string[15] == 0 |
4657 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4658 | { |
8387904d AM |
4659 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4660 | sec->has_tls_reloc = 1; | |
4661 | } | |
4662 | else if (htab->tls_get_addr_fd == NULL | |
0112cd26 | 4663 | && CONST_STRNEQ (h->root.root.string, "__tls_get_addr") |
8387904d AM |
4664 | && (h->root.root.string[14] == 0 |
4665 | || h->root.root.string[14] == '@')) | |
4666 | { | |
4667 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4668 | sec->has_tls_reloc = 1; |
4669 | } | |
4670 | } | |
4671 | break; | |
4672 | ||
4673 | case R_PPC64_TPREL64: | |
4674 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4675 | if (info->shared) | |
4676 | info->flags |= DF_STATIC_TLS; | |
4677 | goto dotlstoc; | |
4678 | ||
4679 | case R_PPC64_DTPMOD64: | |
4680 | if (rel + 1 < rel_end | |
4681 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4682 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4683 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4684 | else |
951fd09b | 4685 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4686 | goto dotlstoc; |
4687 | ||
4688 | case R_PPC64_DTPREL64: | |
4689 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4690 | if (rel != relocs | |
4691 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4692 | && rel[-1].r_offset == rel->r_offset - 8) | |
4693 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4694 | Don't mark with TLS_DTPREL. */ | |
4695 | goto dodyn; | |
4696 | ||
4697 | dotlstoc: | |
4698 | sec->has_tls_reloc = 1; | |
4699 | if (h != NULL) | |
4700 | { | |
4701 | struct ppc_link_hash_entry *eh; | |
4702 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4703 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4704 | } |
4705 | else | |
4706 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4707 | rel->r_addend, tls_type)) | |
4708 | return FALSE; | |
4709 | ||
7c8fe5c4 AM |
4710 | ppc64_sec = ppc64_elf_section_data (sec); |
4711 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4712 | { |
e7b938ca | 4713 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4714 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
7c8fe5c4 AM |
4715 | ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt); |
4716 | if (ppc64_sec->u.t_symndx == NULL) | |
411e1bfb | 4717 | return FALSE; |
7c8fe5c4 AM |
4718 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4719 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4720 | } |
4721 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
7c8fe5c4 | 4722 | ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx; |
951fd09b AM |
4723 | |
4724 | /* Mark the second slot of a GD or LD entry. | |
4725 | -1 to indicate GD and -2 to indicate LD. */ | |
4726 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
7c8fe5c4 | 4727 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4728 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
7c8fe5c4 | 4729 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4730 | goto dodyn; |
4731 | ||
4732 | case R_PPC64_TPREL16: | |
4733 | case R_PPC64_TPREL16_LO: | |
4734 | case R_PPC64_TPREL16_HI: | |
4735 | case R_PPC64_TPREL16_HA: | |
4736 | case R_PPC64_TPREL16_DS: | |
4737 | case R_PPC64_TPREL16_LO_DS: | |
4738 | case R_PPC64_TPREL16_HIGHER: | |
4739 | case R_PPC64_TPREL16_HIGHERA: | |
4740 | case R_PPC64_TPREL16_HIGHEST: | |
4741 | case R_PPC64_TPREL16_HIGHESTA: | |
4742 | if (info->shared) | |
4743 | { | |
4744 | info->flags |= DF_STATIC_TLS; | |
4745 | goto dodyn; | |
5d1634d7 AM |
4746 | } |
4747 | break; | |
4748 | ||
e86ce104 | 4749 | case R_PPC64_ADDR64: |
1e2f5b6e | 4750 | if (opd_sym_map != NULL |
1e2f5b6e | 4751 | && rel + 1 < rel_end |
4ce794b7 | 4752 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4753 | { |
8387904d AM |
4754 | if (h != NULL) |
4755 | { | |
4756 | if (h->root.root.string[0] == '.' | |
4757 | && h->root.root.string[1] != 0 | |
4758 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4759 | ; | |
4760 | else | |
4761 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4762 | } | |
4763 | else | |
4764 | { | |
4765 | asection *s; | |
1e2f5b6e | 4766 | |
8387904d AM |
4767 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4768 | r_symndx); | |
4769 | if (s == NULL) | |
4770 | return FALSE; | |
4771 | else if (s != sec) | |
3f764659 | 4772 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4773 | } |
1e2f5b6e | 4774 | } |
e86ce104 AM |
4775 | /* Fall through. */ |
4776 | ||
04c9666a | 4777 | case R_PPC64_REL30: |
5bd4f169 | 4778 | case R_PPC64_REL32: |
04c9666a | 4779 | case R_PPC64_REL64: |
65f38f15 AM |
4780 | case R_PPC64_ADDR14: |
4781 | case R_PPC64_ADDR14_BRNTAKEN: | |
4782 | case R_PPC64_ADDR14_BRTAKEN: | |
4783 | case R_PPC64_ADDR16: | |
4784 | case R_PPC64_ADDR16_DS: | |
4785 | case R_PPC64_ADDR16_HA: | |
4786 | case R_PPC64_ADDR16_HI: | |
4787 | case R_PPC64_ADDR16_HIGHER: | |
4788 | case R_PPC64_ADDR16_HIGHERA: | |
4789 | case R_PPC64_ADDR16_HIGHEST: | |
4790 | case R_PPC64_ADDR16_HIGHESTA: | |
4791 | case R_PPC64_ADDR16_LO: | |
4792 | case R_PPC64_ADDR16_LO_DS: | |
4793 | case R_PPC64_ADDR24: | |
65f38f15 | 4794 | case R_PPC64_ADDR32: |
65f38f15 AM |
4795 | case R_PPC64_UADDR16: |
4796 | case R_PPC64_UADDR32: | |
4797 | case R_PPC64_UADDR64: | |
5bd4f169 | 4798 | case R_PPC64_TOC: |
81848ca0 AM |
4799 | if (h != NULL && !info->shared) |
4800 | /* We may need a copy reloc. */ | |
f5385ebf | 4801 | h->non_got_ref = 1; |
81848ca0 | 4802 | |
41bd81ab | 4803 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4804 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4805 | break; |
e86ce104 | 4806 | |
65f38f15 AM |
4807 | /* If we are creating a shared library, and this is a reloc |
4808 | against a global symbol, or a non PC relative reloc | |
4809 | against a local symbol, then we need to copy the reloc | |
4810 | into the shared library. However, if we are linking with | |
4811 | -Bsymbolic, we do not need to copy a reloc against a | |
4812 | global symbol which is defined in an object we are | |
4813 | including in the link (i.e., DEF_REGULAR is set). At | |
4814 | this point we have not seen all the input files, so it is | |
4815 | possible that DEF_REGULAR is not set now but will be set | |
4816 | later (it is never cleared). In case of a weak definition, | |
4817 | DEF_REGULAR may be cleared later by a strong definition in | |
4818 | a shared library. We account for that possibility below by | |
f4656909 | 4819 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4820 | table entry. A similar situation occurs when creating |
4821 | shared libraries and symbol visibility changes render the | |
4822 | symbol local. | |
4823 | ||
4824 | If on the other hand, we are creating an executable, we | |
4825 | may need to keep relocations for symbols satisfied by a | |
4826 | dynamic library if we manage to avoid copy relocs for the | |
4827 | symbol. */ | |
411e1bfb | 4828 | dodyn: |
65f38f15 | 4829 | if ((info->shared |
411e1bfb | 4830 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4831 | || (h != NULL |
4832 | && (! info->symbolic | |
4833 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4834 | || !h->def_regular)))) |
f4656909 AM |
4835 | || (ELIMINATE_COPY_RELOCS |
4836 | && !info->shared | |
65f38f15 AM |
4837 | && h != NULL |
4838 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4839 | || !h->def_regular))) |
5bd4f169 | 4840 | { |
ec338859 AM |
4841 | struct ppc_dyn_relocs *p; |
4842 | struct ppc_dyn_relocs **head; | |
4843 | ||
65f38f15 AM |
4844 | /* We must copy these reloc types into the output file. |
4845 | Create a reloc section in dynobj and make room for | |
4846 | this reloc. */ | |
5bd4f169 AM |
4847 | if (sreloc == NULL) |
4848 | { | |
4849 | const char *name; | |
65f38f15 | 4850 | bfd *dynobj; |
5bd4f169 AM |
4851 | |
4852 | name = (bfd_elf_string_from_elf_section | |
4853 | (abfd, | |
4854 | elf_elfheader (abfd)->e_shstrndx, | |
4855 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4856 | if (name == NULL) | |
b34976b6 | 4857 | return FALSE; |
5bd4f169 | 4858 | |
0112cd26 | 4859 | if (! CONST_STRNEQ (name, ".rela") |
65f38f15 AM |
4860 | || strcmp (bfd_get_section_name (abfd, sec), |
4861 | name + 5) != 0) | |
4862 | { | |
4863 | (*_bfd_error_handler) | |
d003868e AM |
4864 | (_("%B: bad relocation section name `%s\'"), |
4865 | abfd, name); | |
5d1634d7 | 4866 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4867 | } |
4868 | ||
65f38f15 | 4869 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4870 | sreloc = bfd_get_section_by_name (dynobj, name); |
4871 | if (sreloc == NULL) | |
4872 | { | |
4873 | flagword flags; | |
4874 | ||
5bd4f169 | 4875 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4876 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4877 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4878 | sreloc = bfd_make_section_with_flags (dynobj, |
4879 | name, | |
4880 | flags); | |
5bd4f169 | 4881 | if (sreloc == NULL |
65f38f15 | 4882 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4883 | return FALSE; |
5bd4f169 | 4884 | } |
65f38f15 | 4885 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4886 | } |
4887 | ||
65f38f15 AM |
4888 | /* If this is a global symbol, we count the number of |
4889 | relocations we need for this symbol. */ | |
4890 | if (h != NULL) | |
4891 | { | |
ec338859 | 4892 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4893 | } |
4894 | else | |
4895 | { | |
ec338859 AM |
4896 | /* Track dynamic relocs needed for local syms too. |
4897 | We really need local syms available to do this | |
4898 | easily. Oh well. */ | |
4899 | ||
4900 | asection *s; | |
6edfbbad DJ |
4901 | void *vpp; |
4902 | ||
ec338859 AM |
4903 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4904 | sec, r_symndx); | |
4905 | if (s == NULL) | |
b34976b6 | 4906 | return FALSE; |
ec338859 | 4907 | |
6edfbbad DJ |
4908 | vpp = &elf_section_data (s)->local_dynrel; |
4909 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4910 | } |
ec338859 AM |
4911 | |
4912 | p = *head; | |
4913 | if (p == NULL || p->sec != sec) | |
4914 | { | |
4ce794b7 | 4915 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4916 | if (p == NULL) |
b34976b6 | 4917 | return FALSE; |
ec338859 AM |
4918 | p->next = *head; |
4919 | *head = p; | |
4920 | p->sec = sec; | |
4921 | p->count = 0; | |
4922 | p->pc_count = 0; | |
4923 | } | |
4924 | ||
4925 | p->count += 1; | |
411e1bfb | 4926 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4927 | p->pc_count += 1; |
65f38f15 | 4928 | } |
5bd4f169 | 4929 | break; |
65f38f15 AM |
4930 | |
4931 | default: | |
96e0dda4 | 4932 | break; |
5bd4f169 AM |
4933 | } |
4934 | } | |
4935 | ||
b34976b6 | 4936 | return TRUE; |
5bd4f169 AM |
4937 | } |
4938 | ||
8387904d AM |
4939 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4940 | of the code entry point, and its section. */ | |
4941 | ||
4942 | static bfd_vma | |
4943 | opd_entry_value (asection *opd_sec, | |
4944 | bfd_vma offset, | |
4945 | asection **code_sec, | |
4946 | bfd_vma *code_off) | |
4947 | { | |
4948 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4949 | Elf_Internal_Rela *relocs; |
8387904d | 4950 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4951 | bfd_vma val; |
8387904d | 4952 | |
4b85d634 AM |
4953 | /* No relocs implies we are linking a --just-symbols object. */ |
4954 | if (opd_sec->reloc_count == 0) | |
4955 | { | |
4956 | bfd_vma val; | |
4957 | ||
4958 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4959 | return (bfd_vma) -1; | |
3b36f7e6 | 4960 | |
4b85d634 AM |
4961 | if (code_sec != NULL) |
4962 | { | |
4963 | asection *sec, *likely = NULL; | |
4964 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4965 | if (sec->vma <= val | |
4966 | && (sec->flags & SEC_LOAD) != 0 | |
4967 | && (sec->flags & SEC_ALLOC) != 0) | |
4968 | likely = sec; | |
4969 | if (likely != NULL) | |
4970 | { | |
4971 | *code_sec = likely; | |
4972 | if (code_off != NULL) | |
4973 | *code_off = val - likely->vma; | |
4974 | } | |
4975 | } | |
4976 | return val; | |
4977 | } | |
4978 | ||
8860955f AM |
4979 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4980 | if (relocs == NULL) | |
4981 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4982 | |
8387904d | 4983 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4984 | lo = relocs; |
8387904d AM |
4985 | BFD_ASSERT (lo != NULL); |
4986 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4987 | val = (bfd_vma) -1; |
8387904d AM |
4988 | while (lo < hi) |
4989 | { | |
4990 | look = lo + (hi - lo) / 2; | |
4991 | if (look->r_offset < offset) | |
4992 | lo = look + 1; | |
4993 | else if (look->r_offset > offset) | |
4994 | hi = look; | |
4995 | else | |
4996 | { | |
4997 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4998 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4999 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5000 | { | |
5001 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5002 | asection *sec; |
5003 | ||
5004 | if (symndx < symtab_hdr->sh_info) | |
5005 | { | |
5006 | Elf_Internal_Sym *sym; | |
5007 | ||
5008 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5009 | if (sym == NULL) | |
5010 | { | |
5011 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5012 | symtab_hdr->sh_info, | |
5013 | 0, NULL, NULL, NULL); | |
5014 | if (sym == NULL) | |
645ea6a9 | 5015 | break; |
8387904d AM |
5016 | symtab_hdr->contents = (bfd_byte *) sym; |
5017 | } | |
5018 | ||
5019 | sym += symndx; | |
5020 | val = sym->st_value; | |
5021 | sec = NULL; | |
5022 | if ((sym->st_shndx != SHN_UNDEF | |
5023 | && sym->st_shndx < SHN_LORESERVE) | |
5024 | || sym->st_shndx > SHN_HIRESERVE) | |
5025 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5026 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5027 | } | |
5028 | else | |
5029 | { | |
5030 | struct elf_link_hash_entry **sym_hashes; | |
5031 | struct elf_link_hash_entry *rh; | |
5032 | ||
5033 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5034 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5035 | while (rh->root.type == bfd_link_hash_indirect | |
5036 | || rh->root.type == bfd_link_hash_warning) | |
5037 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5038 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5039 | || rh->root.type == bfd_link_hash_defweak); | |
5040 | val = rh->root.u.def.value; | |
5041 | sec = rh->root.u.def.section; | |
5042 | } | |
5043 | val += look->r_addend; | |
5044 | if (code_off != NULL) | |
5045 | *code_off = val; | |
5046 | if (code_sec != NULL) | |
5047 | *code_sec = sec; | |
5048 | if (sec != NULL && sec->output_section != NULL) | |
5049 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5050 | } |
5051 | break; | |
5052 | } | |
5053 | } | |
645ea6a9 | 5054 | |
645ea6a9 | 5055 | return val; |
8387904d AM |
5056 | } |
5057 | ||
64d03ab5 AM |
5058 | /* Mark sections containing dynamically referenced symbols. When |
5059 | building shared libraries, we must assume that any visible symbol is | |
5060 | referenced. */ | |
5061 | ||
5062 | static bfd_boolean | |
5063 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5064 | { | |
5065 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5066 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5067 | ||
5068 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5069 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5070 | ||
5071 | /* Dynamic linking info is on the func descriptor sym. */ | |
5072 | if (eh->oh != NULL | |
5073 | && eh->oh->is_func_descriptor | |
5074 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5075 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5076 | eh = eh->oh; | |
5077 | ||
5078 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5079 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5080 | && (eh->elf.ref_dynamic | |
5081 | || (!info->executable | |
5082 | && eh->elf.def_regular | |
5083 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5084 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5085 | { | |
5086 | asection *code_sec; | |
5087 | ||
5088 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5089 | ||
5090 | /* Function descriptor syms cause the associated | |
5091 | function code sym section to be marked. */ | |
5092 | if (eh->is_func_descriptor | |
5093 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5094 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5095 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5096 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5097 | && opd_entry_value (eh->elf.root.u.def.section, | |
5098 | eh->elf.root.u.def.value, | |
5099 | &code_sec, NULL) != (bfd_vma) -1) | |
5100 | code_sec->flags |= SEC_KEEP; | |
5101 | } | |
5102 | ||
5103 | return TRUE; | |
5104 | } | |
5105 | ||
5bd4f169 AM |
5106 | /* Return the section that should be marked against GC for a given |
5107 | relocation. */ | |
5108 | ||
5109 | static asection * | |
4ce794b7 | 5110 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 5111 | struct bfd_link_info *info, |
4ce794b7 AM |
5112 | Elf_Internal_Rela *rel, |
5113 | struct elf_link_hash_entry *h, | |
5114 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5115 | { |
ccfa59ea AM |
5116 | asection *rsec; |
5117 | ||
5118 | /* First mark all our entry sym sections. */ | |
5119 | if (info->gc_sym_list != NULL) | |
5120 | { | |
5121 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5122 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
5123 | ||
5124 | info->gc_sym_list = NULL; | |
b56cbdb9 | 5125 | for (; sym != NULL; sym = sym->next) |
ccfa59ea AM |
5126 | { |
5127 | struct ppc_link_hash_entry *eh; | |
5128 | ||
5129 | eh = (struct ppc_link_hash_entry *) | |
5130 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5131 | if (eh == NULL) | |
5132 | continue; | |
5133 | if (eh->elf.root.type != bfd_link_hash_defined | |
5134 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5135 | continue; | |
5136 | ||
c4f68ce3 AM |
5137 | if (eh->is_func_descriptor |
5138 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5139 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5140 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
5141 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5142 | && opd_entry_value (eh->elf.root.u.def.section, | |
5143 | eh->elf.root.u.def.value, | |
5144 | &rsec, NULL) != (bfd_vma) -1) | |
5145 | ; | |
ccfa59ea AM |
5146 | else |
5147 | continue; | |
5148 | ||
5149 | if (!rsec->gc_mark) | |
5150 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5151 | ||
5152 | rsec = eh->elf.root.u.def.section; | |
5153 | if (!rsec->gc_mark) | |
5154 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
ccfa59ea | 5155 | } |
ccfa59ea AM |
5156 | } |
5157 | ||
5158 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
5159 | function sections, as all functions are referenced in .opd. */ | |
5160 | rsec = NULL; | |
5161 | if (get_opd_info (sec) != NULL) | |
5162 | return rsec; | |
1e2f5b6e | 5163 | |
5bd4f169 AM |
5164 | if (h != NULL) |
5165 | { | |
04c9666a | 5166 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5167 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5168 | |
4ce794b7 | 5169 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5170 | switch (r_type) |
5bd4f169 AM |
5171 | { |
5172 | case R_PPC64_GNU_VTINHERIT: | |
5173 | case R_PPC64_GNU_VTENTRY: | |
5174 | break; | |
5175 | ||
5176 | default: | |
5177 | switch (h->root.type) | |
5178 | { | |
5179 | case bfd_link_hash_defined: | |
5180 | case bfd_link_hash_defweak: | |
ccfa59ea | 5181 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5182 | if (eh->oh != NULL |
5183 | && eh->oh->is_func_descriptor | |
5184 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5185 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5186 | eh = eh->oh; |
1e2f5b6e AM |
5187 | |
5188 | /* Function descriptor syms cause the associated | |
5189 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5190 | if (eh->is_func_descriptor |
5191 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5192 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5193 | { |
5194 | /* They also mark their opd section. */ | |
5195 | if (!eh->elf.root.u.def.section->gc_mark) | |
5196 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5197 | ppc64_elf_gc_mark_hook); | |
5198 | ||
5199 | rsec = eh->oh->elf.root.u.def.section; | |
5200 | } | |
8387904d AM |
5201 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5202 | && opd_entry_value (eh->elf.root.u.def.section, | |
5203 | eh->elf.root.u.def.value, | |
5204 | &rsec, NULL) != (bfd_vma) -1) | |
5205 | { | |
5206 | if (!eh->elf.root.u.def.section->gc_mark) | |
5207 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5208 | ppc64_elf_gc_mark_hook); | |
5209 | } | |
ccfa59ea | 5210 | else |
1e2f5b6e AM |
5211 | rsec = h->root.u.def.section; |
5212 | break; | |
5bd4f169 AM |
5213 | |
5214 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5215 | rsec = h->root.u.c.p->section; |
5216 | break; | |
5bd4f169 AM |
5217 | |
5218 | default: | |
5219 | break; | |
5220 | } | |
5221 | } | |
5222 | } | |
5223 | else | |
5224 | { | |
1e2f5b6e AM |
5225 | asection **opd_sym_section; |
5226 | ||
5227 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5228 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5229 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5230 | { |
5231 | if (!rsec->gc_mark) | |
5232 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5233 | ||
b4f4e59f | 5234 | rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5235 | } |
5bd4f169 AM |
5236 | } |
5237 | ||
1e2f5b6e | 5238 | return rsec; |
5bd4f169 AM |
5239 | } |
5240 | ||
65f38f15 AM |
5241 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5242 | section being removed. */ | |
5bd4f169 | 5243 | |
b34976b6 | 5244 | static bfd_boolean |
4ce794b7 AM |
5245 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5246 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5247 | { |
411e1bfb | 5248 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5249 | Elf_Internal_Shdr *symtab_hdr; |
5250 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5251 | struct got_entry **local_got_ents; |
5bd4f169 | 5252 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5253 | |
680a3378 AM |
5254 | if ((sec->flags & SEC_ALLOC) == 0) |
5255 | return TRUE; | |
5256 | ||
ec338859 AM |
5257 | elf_section_data (sec)->local_dynrel = NULL; |
5258 | ||
411e1bfb | 5259 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5260 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5261 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5262 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5263 | |
5264 | relend = relocs + sec->reloc_count; | |
5265 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5266 | { |
5267 | unsigned long r_symndx; | |
04c9666a | 5268 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5269 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5270 | char tls_type = 0; |
5bd4f169 | 5271 | |
a33d1f77 | 5272 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5273 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5274 | if (r_symndx >= symtab_hdr->sh_info) |
5275 | { | |
5276 | struct ppc_link_hash_entry *eh; | |
5277 | struct ppc_dyn_relocs **pp; | |
5278 | struct ppc_dyn_relocs *p; | |
5279 | ||
5280 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5281 | while (h->root.type == bfd_link_hash_indirect |
5282 | || h->root.type == bfd_link_hash_warning) | |
5283 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5284 | eh = (struct ppc_link_hash_entry *) h; |
5285 | ||
5286 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5287 | if (p->sec == sec) | |
5288 | { | |
5289 | /* Everything must go for SEC. */ | |
5290 | *pp = p->next; | |
5291 | break; | |
5292 | } | |
5293 | } | |
5294 | ||
a33d1f77 AM |
5295 | switch (r_type) |
5296 | { | |
411e1bfb AM |
5297 | case R_PPC64_GOT_TLSLD16: |
5298 | case R_PPC64_GOT_TLSLD16_LO: | |
5299 | case R_PPC64_GOT_TLSLD16_HI: | |
5300 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5301 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5302 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5303 | goto dogot; |
5304 | ||
5305 | case R_PPC64_GOT_TLSGD16: | |
5306 | case R_PPC64_GOT_TLSGD16_LO: | |
5307 | case R_PPC64_GOT_TLSGD16_HI: | |
5308 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5309 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5310 | goto dogot; |
5311 | ||
5312 | case R_PPC64_GOT_TPREL16_DS: | |
5313 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5314 | case R_PPC64_GOT_TPREL16_HI: | |
5315 | case R_PPC64_GOT_TPREL16_HA: | |
5316 | tls_type = TLS_TLS | TLS_TPREL; | |
5317 | goto dogot; | |
5318 | ||
5319 | case R_PPC64_GOT_DTPREL16_DS: | |
5320 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5321 | case R_PPC64_GOT_DTPREL16_HI: | |
5322 | case R_PPC64_GOT_DTPREL16_HA: | |
5323 | tls_type = TLS_TLS | TLS_DTPREL; | |
5324 | goto dogot; | |
5325 | ||
a33d1f77 AM |
5326 | case R_PPC64_GOT16: |
5327 | case R_PPC64_GOT16_DS: | |
5328 | case R_PPC64_GOT16_HA: | |
5329 | case R_PPC64_GOT16_HI: | |
5330 | case R_PPC64_GOT16_LO: | |
5331 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5332 | dogot: |
5333 | { | |
5334 | struct got_entry *ent; | |
5335 | ||
58ac9f71 AM |
5336 | if (h != NULL) |
5337 | ent = h->got.glist; | |
411e1bfb AM |
5338 | else |
5339 | ent = local_got_ents[r_symndx]; | |
5340 | ||
5341 | for (; ent != NULL; ent = ent->next) | |
5342 | if (ent->addend == rel->r_addend | |
e717da7e | 5343 | && ent->owner == abfd |
411e1bfb AM |
5344 | && ent->tls_type == tls_type) |
5345 | break; | |
5346 | if (ent == NULL) | |
5347 | abort (); | |
5348 | if (ent->got.refcount > 0) | |
5349 | ent->got.refcount -= 1; | |
5350 | } | |
a33d1f77 | 5351 | break; |
65f38f15 | 5352 | |
a33d1f77 AM |
5353 | case R_PPC64_PLT16_HA: |
5354 | case R_PPC64_PLT16_HI: | |
5355 | case R_PPC64_PLT16_LO: | |
5356 | case R_PPC64_PLT32: | |
5357 | case R_PPC64_PLT64: | |
721956f4 AM |
5358 | case R_PPC64_REL14: |
5359 | case R_PPC64_REL14_BRNTAKEN: | |
5360 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5361 | case R_PPC64_REL24: |
58ac9f71 | 5362 | if (h != NULL) |
5d1634d7 | 5363 | { |
411e1bfb AM |
5364 | struct plt_entry *ent; |
5365 | ||
411e1bfb AM |
5366 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5367 | if (ent->addend == rel->r_addend) | |
5368 | break; | |
5369 | if (ent == NULL) | |
5370 | abort (); | |
5371 | if (ent->plt.refcount > 0) | |
5372 | ent->plt.refcount -= 1; | |
5d1634d7 | 5373 | } |
e86ce104 | 5374 | break; |
5d1634d7 | 5375 | |
a33d1f77 AM |
5376 | default: |
5377 | break; | |
5378 | } | |
5379 | } | |
b34976b6 | 5380 | return TRUE; |
5bd4f169 AM |
5381 | } |
5382 | ||
deb0e272 AM |
5383 | /* The maximum size of .sfpr. */ |
5384 | #define SFPR_MAX (218*4) | |
5385 | ||
5386 | struct sfpr_def_parms | |
5387 | { | |
699733f6 AM |
5388 | const char name[12]; |
5389 | unsigned char lo, hi; | |
deb0e272 AM |
5390 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5391 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5392 | }; | |
5393 | ||
5394 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5395 | ||
5396 | static unsigned int | |
5397 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5398 | { | |
5399 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5400 | unsigned int i; | |
5401 | size_t len = strlen (parm->name); | |
5402 | bfd_boolean writing = FALSE; | |
699733f6 | 5403 | char sym[16]; |
deb0e272 AM |
5404 | |
5405 | memcpy (sym, parm->name, len); | |
5406 | sym[len + 2] = 0; | |
5407 | ||
5408 | for (i = parm->lo; i <= parm->hi; i++) | |
5409 | { | |
5410 | struct elf_link_hash_entry *h; | |
5411 | ||
5412 | sym[len + 0] = i / 10 + '0'; | |
5413 | sym[len + 1] = i % 10 + '0'; | |
5414 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5415 | if (h != NULL | |
f5385ebf | 5416 | && !h->def_regular) |
deb0e272 AM |
5417 | { |
5418 | h->root.type = bfd_link_hash_defined; | |
5419 | h->root.u.def.section = htab->sfpr; | |
5420 | h->root.u.def.value = htab->sfpr->size; | |
5421 | h->type = STT_FUNC; | |
f5385ebf | 5422 | h->def_regular = 1; |
deb0e272 AM |
5423 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5424 | writing = TRUE; | |
5425 | if (htab->sfpr->contents == NULL) | |
5426 | { | |
5427 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5428 | if (htab->sfpr->contents == NULL) | |
5429 | return FALSE; | |
5430 | } | |
5431 | } | |
5432 | if (writing) | |
5433 | { | |
5434 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5435 | if (i != parm->hi) | |
5436 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5437 | else | |
5438 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5439 | htab->sfpr->size = p - htab->sfpr->contents; | |
5440 | } | |
5441 | } | |
5442 | ||
5443 | return TRUE; | |
5444 | } | |
5445 | ||
5446 | static bfd_byte * | |
5447 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5448 | { | |
5449 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5450 | return p + 4; | |
5451 | } | |
5452 | ||
5453 | static bfd_byte * | |
5454 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5455 | { | |
5456 | p = savegpr0 (abfd, p, r); | |
5457 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5458 | p = p + 4; | |
5459 | bfd_put_32 (abfd, BLR, p); | |
5460 | return p + 4; | |
5461 | } | |
5462 | ||
5463 | static bfd_byte * | |
5464 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5465 | { | |
5466 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5467 | return p + 4; | |
5468 | } | |
5469 | ||
5470 | static bfd_byte * | |
5471 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5472 | { | |
5473 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5474 | p = p + 4; | |
5475 | p = restgpr0 (abfd, p, r); | |
5476 | bfd_put_32 (abfd, MTLR_R0, p); | |
5477 | p = p + 4; | |
5478 | if (r == 29) | |
5479 | { | |
5480 | p = restgpr0 (abfd, p, 30); | |
5481 | p = restgpr0 (abfd, p, 31); | |
5482 | } | |
5483 | bfd_put_32 (abfd, BLR, p); | |
5484 | return p + 4; | |
5485 | } | |
5486 | ||
5487 | static bfd_byte * | |
5488 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5489 | { | |
5490 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5491 | return p + 4; | |
5492 | } | |
5493 | ||
5494 | static bfd_byte * | |
5495 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5496 | { | |
5497 | p = savegpr1 (abfd, p, r); | |
5498 | bfd_put_32 (abfd, BLR, p); | |
5499 | return p + 4; | |
5500 | } | |
5501 | ||
5502 | static bfd_byte * | |
5503 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5504 | { | |
5505 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5506 | return p + 4; | |
5507 | } | |
5508 | ||
5509 | static bfd_byte * | |
5510 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5511 | { | |
5512 | p = restgpr1 (abfd, p, r); | |
5513 | bfd_put_32 (abfd, BLR, p); | |
5514 | return p + 4; | |
5515 | } | |
5516 | ||
5517 | static bfd_byte * | |
5518 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5519 | { | |
5520 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5521 | return p + 4; | |
5522 | } | |
5523 | ||
5524 | static bfd_byte * | |
5525 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5526 | { | |
5527 | p = savefpr (abfd, p, r); | |
5528 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5529 | p = p + 4; | |
5530 | bfd_put_32 (abfd, BLR, p); | |
5531 | return p + 4; | |
5532 | } | |
5533 | ||
5534 | static bfd_byte * | |
5535 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5536 | { | |
5537 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5538 | return p + 4; | |
5539 | } | |
5540 | ||
5541 | static bfd_byte * | |
5542 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5543 | { | |
5544 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5545 | p = p + 4; | |
5546 | p = restfpr (abfd, p, r); | |
5547 | bfd_put_32 (abfd, MTLR_R0, p); | |
5548 | p = p + 4; | |
5549 | if (r == 29) | |
5550 | { | |
5551 | p = restfpr (abfd, p, 30); | |
5552 | p = restfpr (abfd, p, 31); | |
5553 | } | |
5554 | bfd_put_32 (abfd, BLR, p); | |
5555 | return p + 4; | |
5556 | } | |
5557 | ||
5558 | static bfd_byte * | |
5559 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5560 | { | |
5561 | p = savefpr (abfd, p, r); | |
5562 | bfd_put_32 (abfd, BLR, p); | |
5563 | return p + 4; | |
5564 | } | |
5565 | ||
5566 | static bfd_byte * | |
5567 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5568 | { | |
5569 | p = restfpr (abfd, p, r); | |
5570 | bfd_put_32 (abfd, BLR, p); | |
5571 | return p + 4; | |
5572 | } | |
5573 | ||
5574 | static bfd_byte * | |
5575 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5576 | { | |
5577 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5578 | p = p + 4; | |
5579 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5580 | return p + 4; | |
5581 | } | |
5582 | ||
5583 | static bfd_byte * | |
5584 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5585 | { | |
5586 | p = savevr (abfd, p, r); | |
5587 | bfd_put_32 (abfd, BLR, p); | |
5588 | return p + 4; | |
5589 | } | |
5590 | ||
5591 | static bfd_byte * | |
5592 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5593 | { | |
5594 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5595 | p = p + 4; | |
5596 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5597 | return p + 4; | |
5598 | } | |
5599 | ||
5600 | static bfd_byte * | |
5601 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5602 | { | |
5603 | p = restvr (abfd, p, r); | |
5604 | bfd_put_32 (abfd, BLR, p); | |
5605 | return p + 4; | |
5606 | } | |
5607 | ||
e86ce104 AM |
5608 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5609 | information on function code symbol entries to their corresponding | |
5610 | function descriptor symbol entries. */ | |
deb0e272 | 5611 | |
b34976b6 | 5612 | static bfd_boolean |
4ce794b7 | 5613 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5614 | { |
e86ce104 | 5615 | struct bfd_link_info *info; |
65f38f15 | 5616 | struct ppc_link_hash_table *htab; |
411e1bfb | 5617 | struct plt_entry *ent; |
50bc7936 AM |
5618 | struct ppc_link_hash_entry *fh; |
5619 | struct ppc_link_hash_entry *fdh; | |
5620 | bfd_boolean force_local; | |
5bd4f169 | 5621 | |
50bc7936 AM |
5622 | fh = (struct ppc_link_hash_entry *) h; |
5623 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5624 | return TRUE; |
e86ce104 | 5625 | |
50bc7936 AM |
5626 | if (fh->elf.root.type == bfd_link_hash_warning) |
5627 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5628 | |
4ce794b7 | 5629 | info = inf; |
65f38f15 | 5630 | htab = ppc_hash_table (info); |
5bd4f169 | 5631 | |
c09bdfe5 AM |
5632 | /* Resolve undefined references to dot-symbols as the value |
5633 | in the function descriptor, if we have one in a regular object. | |
5634 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5635 | in dynamic objects are handled elsewhere. */ | |
5636 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5637 | && fh->was_undefined | |
5638 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5639 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5640 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5641 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5642 | fh->oh->elf.root.u.def.value, | |
5643 | &fh->elf.root.u.def.section, | |
5644 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5645 | { | |
5646 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5647 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5648 | } |
5649 | ||
e86ce104 AM |
5650 | /* If this is a function code symbol, transfer dynamic linking |
5651 | information to the function descriptor symbol. */ | |
50bc7936 | 5652 | if (!fh->is_func) |
b34976b6 | 5653 | return TRUE; |
e86ce104 | 5654 | |
50bc7936 | 5655 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5656 | if (ent->plt.refcount > 0) |
5657 | break; | |
50bc7936 AM |
5658 | if (ent == NULL |
5659 | || fh->elf.root.root.string[0] != '.' | |
5660 | || fh->elf.root.root.string[1] == '\0') | |
5661 | return TRUE; | |
5bd4f169 | 5662 | |
50bc7936 AM |
5663 | /* Find the corresponding function descriptor symbol. Create it |
5664 | as undefined if necessary. */ | |
5bd4f169 | 5665 | |
50bc7936 AM |
5666 | fdh = get_fdh (fh, htab); |
5667 | if (fdh != NULL) | |
5668 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5669 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5670 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5671 | |
50bc7936 AM |
5672 | if (fdh == NULL |
5673 | && info->shared | |
5674 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5675 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5676 | { | |
908b32fc | 5677 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5678 | if (fdh == NULL) |
5679 | return FALSE; | |
50bc7936 | 5680 | } |
648cca2c | 5681 | |
908b32fc | 5682 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5683 | code symbol is strong undefined, make the fake sym the same. |
5684 | If the function code symbol is defined, then force the fake | |
5685 | descriptor local; We can't support overriding of symbols in a | |
5686 | shared library on a fake descriptor. */ | |
908b32fc AM |
5687 | |
5688 | if (fdh != NULL | |
5689 | && fdh->fake | |
433817dd | 5690 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5691 | { |
433817dd AM |
5692 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5693 | { | |
5694 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5695 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5696 | } | |
5697 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5698 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5699 | { | |
5700 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5701 | } | |
908b32fc AM |
5702 | } |
5703 | ||
50bc7936 | 5704 | if (fdh != NULL |
f5385ebf | 5705 | && !fdh->elf.forced_local |
50bc7936 | 5706 | && (info->shared |
f5385ebf AM |
5707 | || fdh->elf.def_dynamic |
5708 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5709 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5710 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5711 | { | |
5712 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5713 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5714 | return FALSE; |
f5385ebf AM |
5715 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5716 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5717 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5718 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5719 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5720 | { |
40d16e0b | 5721 | move_plt_plist (fh, fdh); |
f5385ebf | 5722 | fdh->elf.needs_plt = 1; |
e86ce104 | 5723 | } |
50bc7936 | 5724 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5725 | fdh->oh = fh; |
5726 | fh->oh = fdh; | |
e86ce104 AM |
5727 | } |
5728 | ||
50bc7936 AM |
5729 | /* Now that the info is on the function descriptor, clear the |
5730 | function code sym info. Any function code syms for which we | |
5731 | don't have a definition in a regular file, we force local. | |
5732 | This prevents a shared library from exporting syms that have | |
5733 | been imported from another library. Function code syms that | |
5734 | are really in the library we must leave global to prevent the | |
5735 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5736 | force_local = (!fh->elf.def_regular |
5737 | || fdh == NULL | |
5738 | || !fdh->elf.def_regular | |
5739 | || fdh->elf.forced_local); | |
50bc7936 AM |
5740 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5741 | ||
b34976b6 | 5742 | return TRUE; |
e86ce104 | 5743 | } |
40b8271b | 5744 | |
e86ce104 | 5745 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5746 | this hook to a) provide some gcc support functions, and b) transfer |
5747 | dynamic linking information gathered so far on function code symbol | |
5748 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5749 | |
b34976b6 | 5750 | static bfd_boolean |
4ce794b7 AM |
5751 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5752 | struct bfd_link_info *info) | |
e86ce104 AM |
5753 | { |
5754 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5755 | unsigned int i; |
deb0e272 AM |
5756 | const struct sfpr_def_parms funcs[] = |
5757 | { | |
5758 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5759 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5760 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5761 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5762 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5763 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5764 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5765 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5766 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5767 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5768 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5769 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5770 | }; | |
e86ce104 AM |
5771 | |
5772 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5773 | if (htab->sfpr == NULL) |
5774 | /* We don't have any relocs. */ | |
b34976b6 | 5775 | return TRUE; |
82bd7b59 | 5776 | |
deb0e272 AM |
5777 | /* Provide any missing _save* and _rest* functions. */ |
5778 | htab->sfpr->size = 0; | |
5779 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5780 | if (!sfpr_define (info, &funcs[i])) | |
5781 | return FALSE; | |
82bd7b59 | 5782 | |
4ce794b7 | 5783 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5784 | |
eea6121a | 5785 | if (htab->sfpr->size == 0) |
8423293d | 5786 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5787 | |
b34976b6 | 5788 | return TRUE; |
e86ce104 AM |
5789 | } |
5790 | ||
5791 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5792 | regular object. The current definition is in some section of the | |
5793 | dynamic object, but we're not including those sections. We have to | |
5794 | change the definition to something the rest of the link can | |
5795 | understand. */ | |
5796 | ||
b34976b6 | 5797 | static bfd_boolean |
4ce794b7 AM |
5798 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5799 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5800 | { |
5801 | struct ppc_link_hash_table *htab; | |
e86ce104 | 5802 | asection *s; |
e86ce104 AM |
5803 | |
5804 | htab = ppc_hash_table (info); | |
5805 | ||
5806 | /* Deal with function syms. */ | |
5807 | if (h->type == STT_FUNC | |
f5385ebf | 5808 | || h->needs_plt) |
e86ce104 AM |
5809 | { |
5810 | /* Clear procedure linkage table information for any symbol that | |
5811 | won't need a .plt entry. */ | |
411e1bfb AM |
5812 | struct plt_entry *ent; |
5813 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5814 | if (ent->plt.refcount > 0) | |
5815 | break; | |
8387904d | 5816 | if (ent == NULL |
9c7a29a3 AM |
5817 | || SYMBOL_CALLS_LOCAL (info, h) |
5818 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5819 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5820 | { |
411e1bfb | 5821 | h->plt.plist = NULL; |
f5385ebf | 5822 | h->needs_plt = 0; |
40b8271b | 5823 | } |
5bd4f169 | 5824 | } |
bbd7ec4a | 5825 | else |
411e1bfb | 5826 | h->plt.plist = NULL; |
5bd4f169 AM |
5827 | |
5828 | /* If this is a weak symbol, and there is a real definition, the | |
5829 | processor independent code will have arranged for us to see the | |
5830 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5831 | if (h->u.weakdef != NULL) |
5bd4f169 | 5832 | { |
f6e332e6 AM |
5833 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5834 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5835 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5836 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5837 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5838 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5839 | return TRUE; |
5bd4f169 AM |
5840 | } |
5841 | ||
5bd4f169 AM |
5842 | /* If we are creating a shared library, we must presume that the |
5843 | only references to the symbol are via the global offset table. | |
5844 | For such cases we need not do anything here; the relocations will | |
5845 | be handled correctly by relocate_section. */ | |
5846 | if (info->shared) | |
b34976b6 | 5847 | return TRUE; |
5bd4f169 | 5848 | |
65f38f15 AM |
5849 | /* If there are no references to this symbol that do not use the |
5850 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5851 | if (!h->non_got_ref) |
b34976b6 | 5852 | return TRUE; |
65f38f15 | 5853 | |
b186458a JJ |
5854 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
5855 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
5856 | return TRUE; | |
5857 | ||
f4656909 | 5858 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5859 | { |
f4656909 AM |
5860 | struct ppc_link_hash_entry * eh; |
5861 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5862 | |
f4656909 AM |
5863 | eh = (struct ppc_link_hash_entry *) h; |
5864 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5865 | { | |
5866 | s = p->sec->output_section; | |
5867 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5868 | break; | |
5869 | } | |
5870 | ||
5871 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5872 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5873 | if (p == NULL) | |
5874 | { | |
f5385ebf | 5875 | h->non_got_ref = 0; |
f4656909 AM |
5876 | return TRUE; |
5877 | } | |
65f38f15 AM |
5878 | } |
5879 | ||
5d35169e | 5880 | if (h->plt.plist != NULL) |
97b639ba AM |
5881 | { |
5882 | /* We should never get here, but unfortunately there are versions | |
5883 | of gcc out there that improperly (for this ABI) put initialized | |
5884 | function pointers, vtable refs and suchlike in read-only | |
5885 | sections. Allow them to proceed, but warn that this might | |
5886 | break at runtime. */ | |
5887 | (*_bfd_error_handler) | |
5888 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5889 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5890 | h->root.root.string); | |
5891 | } | |
5d35169e AM |
5892 | |
5893 | /* This is a reference to a symbol defined by a dynamic object which | |
5894 | is not a function. */ | |
5895 | ||
909272ee AM |
5896 | if (h->size == 0) |
5897 | { | |
5898 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5899 | h->root.root.string); | |
5900 | return TRUE; | |
5901 | } | |
5902 | ||
5bd4f169 AM |
5903 | /* We must allocate the symbol in our .dynbss section, which will |
5904 | become part of the .bss section of the executable. There will be | |
5905 | an entry for this symbol in the .dynsym section. The dynamic | |
5906 | object will contain position independent code, so all references | |
5907 | from the dynamic object to this symbol will go through the global | |
5908 | offset table. The dynamic linker will use the .dynsym entry to | |
5909 | determine the address it must put in the global offset table, so | |
5910 | both the dynamic object and the regular object will refer to the | |
5911 | same memory location for the variable. */ | |
5bd4f169 | 5912 | |
04c9666a AM |
5913 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5914 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5915 | runtime process image. We need to remember the offset into the |
5916 | .rela.bss section we are going to use. */ | |
5917 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5918 | { | |
eea6121a | 5919 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5920 | h->needs_copy = 1; |
5bd4f169 AM |
5921 | } |
5922 | ||
4ce794b7 | 5923 | s = htab->dynbss; |
5bd4f169 | 5924 | |
027297b7 | 5925 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
5926 | } |
5927 | ||
e86ce104 AM |
5928 | /* If given a function descriptor symbol, hide both the function code |
5929 | sym and the descriptor. */ | |
5930 | static void | |
4ce794b7 AM |
5931 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5932 | struct elf_link_hash_entry *h, | |
5933 | bfd_boolean force_local) | |
e86ce104 | 5934 | { |
34814b9f | 5935 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5936 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5937 | ||
34814b9f AM |
5938 | eh = (struct ppc_link_hash_entry *) h; |
5939 | if (eh->is_func_descriptor) | |
e86ce104 | 5940 | { |
34814b9f | 5941 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5942 | |
721956f4 | 5943 | if (fh == NULL) |
d1329ca3 AM |
5944 | { |
5945 | const char *p, *q; | |
5946 | struct ppc_link_hash_table *htab; | |
5947 | char save; | |
5948 | ||
5949 | /* We aren't supposed to use alloca in BFD because on | |
5950 | systems which do not have alloca the version in libiberty | |
5951 | calls xmalloc, which might cause the program to crash | |
5952 | when it runs out of memory. This function doesn't have a | |
5953 | return status, so there's no way to gracefully return an | |
5954 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5955 | accessed; It's either a string in an ELF string table, |
5956 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5957 | |
34814b9f | 5958 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5959 | save = *p; |
5960 | *(char *) p = '.'; | |
5961 | htab = ppc_hash_table (info); | |
34814b9f AM |
5962 | fh = (struct ppc_link_hash_entry *) |
5963 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5964 | *(char *) p = save; |
5965 | ||
5966 | /* Unfortunately, if it so happens that the string we were | |
5967 | looking for was allocated immediately before this string, | |
5968 | then we overwrote the string terminator. That's the only | |
5969 | reason the lookup should fail. */ | |
5970 | if (fh == NULL) | |
5971 | { | |
34814b9f AM |
5972 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5973 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5974 | --q, --p; |
34814b9f AM |
5975 | if (q < eh->elf.root.root.string && *p == '.') |
5976 | fh = (struct ppc_link_hash_entry *) | |
5977 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5978 | } |
5979 | if (fh != NULL) | |
5980 | { | |
34814b9f AM |
5981 | eh->oh = fh; |
5982 | fh->oh = eh; | |
d1329ca3 AM |
5983 | } |
5984 | } | |
e86ce104 | 5985 | if (fh != NULL) |
34814b9f | 5986 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5987 | } |
5988 | } | |
5989 | ||
411e1bfb | 5990 | static bfd_boolean |
8843416a AM |
5991 | get_sym_h (struct elf_link_hash_entry **hp, |
5992 | Elf_Internal_Sym **symp, | |
5993 | asection **symsecp, | |
5994 | char **tls_maskp, | |
5995 | Elf_Internal_Sym **locsymsp, | |
5996 | unsigned long r_symndx, | |
5997 | bfd *ibfd) | |
411e1bfb AM |
5998 | { |
5999 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6000 | ||
6001 | if (r_symndx >= symtab_hdr->sh_info) | |
6002 | { | |
6003 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6004 | struct elf_link_hash_entry *h; | |
6005 | ||
6006 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6007 | while (h->root.type == bfd_link_hash_indirect | |
6008 | || h->root.type == bfd_link_hash_warning) | |
6009 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6010 | ||
6011 | if (hp != NULL) | |
6012 | *hp = h; | |
6013 | ||
6014 | if (symp != NULL) | |
6015 | *symp = NULL; | |
6016 | ||
6017 | if (symsecp != NULL) | |
6018 | { | |
6019 | asection *symsec = NULL; | |
6020 | if (h->root.type == bfd_link_hash_defined | |
6021 | || h->root.type == bfd_link_hash_defweak) | |
6022 | symsec = h->root.u.def.section; | |
6023 | *symsecp = symsec; | |
6024 | } | |
6025 | ||
e7b938ca | 6026 | if (tls_maskp != NULL) |
411e1bfb AM |
6027 | { |
6028 | struct ppc_link_hash_entry *eh; | |
6029 | ||
6030 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6031 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6032 | } |
6033 | } | |
6034 | else | |
6035 | { | |
6036 | Elf_Internal_Sym *sym; | |
6037 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6038 | ||
6039 | if (locsyms == NULL) | |
6040 | { | |
6041 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6042 | if (locsyms == NULL) | |
6043 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6044 | symtab_hdr->sh_info, | |
6045 | 0, NULL, NULL, NULL); | |
6046 | if (locsyms == NULL) | |
6047 | return FALSE; | |
6048 | *locsymsp = locsyms; | |
6049 | } | |
6050 | sym = locsyms + r_symndx; | |
6051 | ||
6052 | if (hp != NULL) | |
6053 | *hp = NULL; | |
6054 | ||
6055 | if (symp != NULL) | |
6056 | *symp = sym; | |
6057 | ||
6058 | if (symsecp != NULL) | |
6059 | { | |
6060 | asection *symsec = NULL; | |
6061 | if ((sym->st_shndx != SHN_UNDEF | |
6062 | && sym->st_shndx < SHN_LORESERVE) | |
6063 | || sym->st_shndx > SHN_HIRESERVE) | |
6064 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
6065 | *symsecp = symsec; | |
6066 | } | |
6067 | ||
e7b938ca | 6068 | if (tls_maskp != NULL) |
411e1bfb AM |
6069 | { |
6070 | struct got_entry **lgot_ents; | |
e7b938ca | 6071 | char *tls_mask; |
411e1bfb | 6072 | |
e7b938ca | 6073 | tls_mask = NULL; |
411e1bfb AM |
6074 | lgot_ents = elf_local_got_ents (ibfd); |
6075 | if (lgot_ents != NULL) | |
6076 | { | |
e7b938ca AM |
6077 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6078 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6079 | } |
e7b938ca | 6080 | *tls_maskp = tls_mask; |
411e1bfb AM |
6081 | } |
6082 | } | |
6083 | return TRUE; | |
6084 | } | |
6085 | ||
e7b938ca | 6086 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6087 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6088 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6089 | |
6090 | static int | |
0d4792f7 AM |
6091 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6092 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6093 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6094 | { |
6095 | unsigned long r_symndx; | |
0d4792f7 | 6096 | int next_r; |
411e1bfb AM |
6097 | struct elf_link_hash_entry *h; |
6098 | Elf_Internal_Sym *sym; | |
6099 | asection *sec; | |
6100 | bfd_vma off; | |
6101 | ||
6102 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6103 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6104 | return 0; |
411e1bfb | 6105 | |
e7b938ca | 6106 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6107 | || sec == NULL |
7c8fe5c4 | 6108 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6109 | return 1; |
411e1bfb AM |
6110 | |
6111 | /* Look inside a TOC section too. */ | |
6112 | if (h != NULL) | |
6113 | { | |
6114 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6115 | off = h->root.u.def.value; | |
6116 | } | |
6117 | else | |
6118 | off = sym->st_value; | |
6119 | off += rel->r_addend; | |
6120 | BFD_ASSERT (off % 8 == 0); | |
7c8fe5c4 AM |
6121 | r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8]; |
6122 | next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1]; | |
e7b938ca | 6123 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6124 | return 0; |
0d4792f7 AM |
6125 | if (toc_symndx != NULL) |
6126 | *toc_symndx = r_symndx; | |
6127 | if ((h == NULL | |
6128 | || ((h->root.type == bfd_link_hash_defined | |
6129 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6130 | && !h->def_dynamic)) |
0d4792f7 AM |
6131 | && (next_r == -1 || next_r == -2)) |
6132 | return 1 - next_r; | |
951fd09b | 6133 | return 1; |
411e1bfb AM |
6134 | } |
6135 | ||
754021d0 | 6136 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6137 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6138 | |
6139 | static bfd_boolean | |
6140 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6141 | { | |
6142 | struct ppc_link_hash_entry *eh; | |
6143 | asection *sym_sec; | |
6144 | long *opd_adjust; | |
6145 | ||
6146 | if (h->root.type == bfd_link_hash_indirect) | |
6147 | return TRUE; | |
6148 | ||
6149 | if (h->root.type == bfd_link_hash_warning) | |
6150 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6151 | ||
6152 | if (h->root.type != bfd_link_hash_defined | |
6153 | && h->root.type != bfd_link_hash_defweak) | |
6154 | return TRUE; | |
6155 | ||
6156 | eh = (struct ppc_link_hash_entry *) h; | |
6157 | if (eh->adjust_done) | |
6158 | return TRUE; | |
6159 | ||
6160 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6161 | opd_adjust = get_opd_info (sym_sec); |
6162 | if (opd_adjust != NULL) | |
754021d0 | 6163 | { |
3f764659 | 6164 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6165 | if (adjust == -1) |
6166 | { | |
6167 | /* This entry has been deleted. */ | |
b3fac117 | 6168 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6169 | if (dsec == NULL) |
6170 | { | |
6171 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6172 | if (elf_discarded_section (dsec)) | |
6173 | { | |
b3fac117 | 6174 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6175 | break; |
6176 | } | |
6177 | } | |
4025353c | 6178 | eh->elf.root.u.def.value = 0; |
81688140 | 6179 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6180 | } |
6181 | else | |
6182 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6183 | eh->adjust_done = 1; |
6184 | } | |
6185 | return TRUE; | |
6186 | } | |
6187 | ||
8c1d1bb8 AM |
6188 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6189 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6190 | have already been determined. */ | |
6191 | ||
6192 | static bfd_boolean | |
6193 | dec_dynrel_count (bfd_vma r_info, | |
6194 | asection *sec, | |
6195 | struct bfd_link_info *info, | |
6196 | Elf_Internal_Sym **local_syms, | |
6197 | struct elf_link_hash_entry *h, | |
6198 | asection *sym_sec) | |
6199 | { | |
6200 | enum elf_ppc64_reloc_type r_type; | |
6201 | struct ppc_dyn_relocs *p; | |
6202 | struct ppc_dyn_relocs **pp; | |
6203 | ||
6204 | /* Can this reloc be dynamic? This switch, and later tests here | |
6205 | should be kept in sync with the code in check_relocs. */ | |
6206 | r_type = ELF64_R_TYPE (r_info); | |
6207 | switch (r_type) | |
6208 | { | |
6209 | default: | |
6210 | return TRUE; | |
6211 | ||
6212 | case R_PPC64_TPREL16: | |
6213 | case R_PPC64_TPREL16_LO: | |
6214 | case R_PPC64_TPREL16_HI: | |
6215 | case R_PPC64_TPREL16_HA: | |
6216 | case R_PPC64_TPREL16_DS: | |
6217 | case R_PPC64_TPREL16_LO_DS: | |
6218 | case R_PPC64_TPREL16_HIGHER: | |
6219 | case R_PPC64_TPREL16_HIGHERA: | |
6220 | case R_PPC64_TPREL16_HIGHEST: | |
6221 | case R_PPC64_TPREL16_HIGHESTA: | |
6222 | if (!info->shared) | |
6223 | return TRUE; | |
6224 | ||
6225 | case R_PPC64_TPREL64: | |
6226 | case R_PPC64_DTPMOD64: | |
6227 | case R_PPC64_DTPREL64: | |
6228 | case R_PPC64_ADDR64: | |
6229 | case R_PPC64_REL30: | |
6230 | case R_PPC64_REL32: | |
6231 | case R_PPC64_REL64: | |
6232 | case R_PPC64_ADDR14: | |
6233 | case R_PPC64_ADDR14_BRNTAKEN: | |
6234 | case R_PPC64_ADDR14_BRTAKEN: | |
6235 | case R_PPC64_ADDR16: | |
6236 | case R_PPC64_ADDR16_DS: | |
6237 | case R_PPC64_ADDR16_HA: | |
6238 | case R_PPC64_ADDR16_HI: | |
6239 | case R_PPC64_ADDR16_HIGHER: | |
6240 | case R_PPC64_ADDR16_HIGHERA: | |
6241 | case R_PPC64_ADDR16_HIGHEST: | |
6242 | case R_PPC64_ADDR16_HIGHESTA: | |
6243 | case R_PPC64_ADDR16_LO: | |
6244 | case R_PPC64_ADDR16_LO_DS: | |
6245 | case R_PPC64_ADDR24: | |
6246 | case R_PPC64_ADDR32: | |
6247 | case R_PPC64_UADDR16: | |
6248 | case R_PPC64_UADDR32: | |
6249 | case R_PPC64_UADDR64: | |
6250 | case R_PPC64_TOC: | |
6251 | break; | |
6252 | } | |
6253 | ||
6254 | if (local_syms != NULL) | |
6255 | { | |
6256 | unsigned long r_symndx; | |
6257 | Elf_Internal_Sym *sym; | |
6258 | bfd *ibfd = sec->owner; | |
6259 | ||
6260 | r_symndx = ELF64_R_SYM (r_info); | |
6261 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6262 | return FALSE; | |
6263 | } | |
6264 | ||
6265 | if ((info->shared | |
6266 | && (MUST_BE_DYN_RELOC (r_type) | |
6267 | || (h != NULL | |
6268 | && (!info->symbolic | |
6269 | || h->root.type == bfd_link_hash_defweak | |
6270 | || !h->def_regular)))) | |
6271 | || (ELIMINATE_COPY_RELOCS | |
6272 | && !info->shared | |
6273 | && h != NULL | |
6274 | && (h->root.type == bfd_link_hash_defweak | |
6275 | || !h->def_regular))) | |
6276 | ; | |
6277 | else | |
6278 | return TRUE; | |
6279 | ||
6280 | if (h != NULL) | |
6281 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6282 | else |
6edfbbad | 6283 | { |
60124e18 AM |
6284 | if (sym_sec != NULL) |
6285 | { | |
6286 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6287 | pp = (struct ppc_dyn_relocs **) vpp; | |
6288 | } | |
6289 | else | |
6290 | { | |
6291 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6292 | pp = (struct ppc_dyn_relocs **) vpp; | |
6293 | } | |
6294 | ||
6295 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6296 | with local syms for a given section. Don't report a dynreloc | |
6297 | miscount. */ | |
6298 | if (*pp == NULL) | |
6299 | return TRUE; | |
6edfbbad | 6300 | } |
8c1d1bb8 AM |
6301 | |
6302 | while ((p = *pp) != NULL) | |
6303 | { | |
6304 | if (p->sec == sec) | |
6305 | { | |
6306 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6307 | p->pc_count -= 1; | |
6308 | p->count -= 1; | |
6309 | if (p->count == 0) | |
6310 | *pp = p->next; | |
6311 | return TRUE; | |
6312 | } | |
6313 | pp = &p->next; | |
6314 | } | |
6315 | ||
6316 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6317 | sec->owner, sec); | |
6318 | bfd_set_error (bfd_error_bad_value); | |
6319 | return FALSE; | |
6320 | } | |
6321 | ||
754021d0 AM |
6322 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6323 | only remove those associated with functions in discarded link-once | |
6324 | sections, or weakly defined functions that have been overridden. It | |
6325 | would be possible to remove many more entries for statically linked | |
6326 | applications. */ | |
6327 | ||
b34976b6 | 6328 | bfd_boolean |
3f764659 | 6329 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
b4f4e59f | 6330 | bfd_boolean no_opd_opt, |
3f764659 | 6331 | bfd_boolean non_overlapping) |
1e2f5b6e AM |
6332 | { |
6333 | bfd *ibfd; | |
754021d0 | 6334 | bfd_boolean some_edited = FALSE; |
3f764659 | 6335 | asection *need_pad = NULL; |
1e2f5b6e | 6336 | |
411e1bfb | 6337 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6338 | { |
6339 | asection *sec; | |
6340 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6341 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6342 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6343 | struct elf_link_hash_entry **sym_hashes; |
6344 | bfd_vma offset; | |
d6fe2dc1 | 6345 | bfd_size_type amt; |
4025353c | 6346 | long *opd_adjust; |
3f764659 JJ |
6347 | bfd_boolean need_edit, add_aux_fields; |
6348 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6349 | |
6350 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6351 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6352 | continue; |
6353 | ||
3f764659 | 6354 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6355 | opd_adjust = get_opd_info (sec); |
6356 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6357 | { |
4b85d634 AM |
6358 | /* check_relocs hasn't been called. Must be a ld -r link |
6359 | or --just-symbols object. */ | |
b4f4e59f | 6360 | opd_adjust = bfd_alloc (obfd, amt); |
46de2a7c AM |
6361 | if (opd_adjust == NULL) |
6362 | return FALSE; | |
7c8fe5c4 AM |
6363 | ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust; |
6364 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
6365 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
d6fe2dc1 | 6366 | } |
4025353c | 6367 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6368 | |
b4f4e59f AM |
6369 | if (no_opd_opt) |
6370 | continue; | |
6371 | ||
4b85d634 AM |
6372 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6373 | continue; | |
6374 | ||
1e2f5b6e AM |
6375 | if (sec->output_section == bfd_abs_section_ptr) |
6376 | continue; | |
6377 | ||
6378 | /* Look through the section relocs. */ | |
6379 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6380 | continue; | |
6381 | ||
6cdc0ccc | 6382 | local_syms = NULL; |
1e2f5b6e AM |
6383 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6384 | sym_hashes = elf_sym_hashes (ibfd); | |
6385 | ||
6386 | /* Read the relocations. */ | |
4ce794b7 | 6387 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6388 | info->keep_memory); |
1e2f5b6e | 6389 | if (relstart == NULL) |
b34976b6 | 6390 | return FALSE; |
1e2f5b6e AM |
6391 | |
6392 | /* First run through the relocs to check they are sane, and to | |
6393 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6394 | need_edit = FALSE; |
3f764659 | 6395 | need_pad = sec; |
1e2f5b6e AM |
6396 | offset = 0; |
6397 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6398 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6399 | { |
04c9666a | 6400 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6401 | unsigned long r_symndx; |
6402 | asection *sym_sec; | |
6403 | struct elf_link_hash_entry *h; | |
6404 | Elf_Internal_Sym *sym; | |
6405 | ||
3f764659 | 6406 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6407 | only interested in the reloc pointing to a function entry |
6408 | point. */ | |
50bc7936 AM |
6409 | if (rel->r_offset != offset |
6410 | || rel + 1 >= relend | |
6411 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6412 | { |
6413 | /* If someone messes with .opd alignment then after a | |
6414 | "ld -r" we might have padding in the middle of .opd. | |
6415 | Also, there's nothing to prevent someone putting | |
6416 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6417 | optimization for them! */ |
3f764659 | 6418 | broken_opd: |
1e2f5b6e | 6419 | (*_bfd_error_handler) |
d003868e | 6420 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6421 | need_edit = FALSE; |
1e2f5b6e AM |
6422 | break; |
6423 | } | |
6424 | ||
50bc7936 AM |
6425 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6426 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6427 | { | |
6428 | (*_bfd_error_handler) | |
d003868e AM |
6429 | (_("%B: unexpected reloc type %u in .opd section"), |
6430 | ibfd, r_type); | |
50bc7936 AM |
6431 | need_edit = FALSE; |
6432 | break; | |
6433 | } | |
6434 | ||
1e2f5b6e | 6435 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6436 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6437 | r_symndx, ibfd)) | |
50bc7936 | 6438 | goto error_ret; |
1e2f5b6e AM |
6439 | |
6440 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6441 | { | |
411e1bfb AM |
6442 | const char *sym_name; |
6443 | if (h != NULL) | |
6444 | sym_name = h->root.root.string; | |
6445 | else | |
26c61ae5 L |
6446 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6447 | sym_sec); | |
411e1bfb | 6448 | |
1e2f5b6e | 6449 | (*_bfd_error_handler) |
d003868e AM |
6450 | (_("%B: undefined sym `%s' in .opd section"), |
6451 | ibfd, sym_name); | |
b34976b6 | 6452 | need_edit = FALSE; |
1e2f5b6e AM |
6453 | break; |
6454 | } | |
6455 | ||
51020317 AM |
6456 | /* opd entries are always for functions defined in the |
6457 | current input bfd. If the symbol isn't defined in the | |
6458 | input bfd, then we won't be using the function in this | |
6459 | bfd; It must be defined in a linkonce section in another | |
6460 | bfd, or is weak. It's also possible that we are | |
6461 | discarding the function due to a linker script /DISCARD/, | |
6462 | which we test for via the output_section. */ | |
6463 | if (sym_sec->owner != ibfd | |
6464 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6465 | need_edit = TRUE; |
1e2f5b6e | 6466 | |
50bc7936 | 6467 | rel += 2; |
3f764659 JJ |
6468 | if (rel == relend |
6469 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6470 | { | |
6471 | if (sec->size == offset + 24) | |
6472 | { | |
6473 | need_pad = NULL; | |
6474 | break; | |
6475 | } | |
6476 | if (rel == relend && sec->size == offset + 16) | |
6477 | { | |
6478 | cnt_16b++; | |
6479 | break; | |
6480 | } | |
6481 | goto broken_opd; | |
6482 | } | |
6483 | ||
6484 | if (rel->r_offset == offset + 24) | |
6485 | offset += 24; | |
6486 | else if (rel->r_offset != offset + 16) | |
6487 | goto broken_opd; | |
6488 | else if (rel + 1 < relend | |
6489 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6490 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6491 | { | |
6492 | offset += 16; | |
6493 | cnt_16b++; | |
6494 | } | |
6495 | else if (rel + 2 < relend | |
6496 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6497 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6498 | { | |
6499 | offset += 24; | |
6500 | rel += 1; | |
6501 | } | |
6502 | else | |
6503 | goto broken_opd; | |
1e2f5b6e AM |
6504 | } |
6505 | ||
3f764659 JJ |
6506 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6507 | ||
6508 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6509 | { |
6510 | Elf_Internal_Rela *write_rel; | |
6511 | bfd_byte *rptr, *wptr; | |
3f764659 | 6512 | bfd_byte *new_contents = NULL; |
b34976b6 | 6513 | bfd_boolean skip; |
3f764659 | 6514 | long opd_ent_size; |
1e2f5b6e AM |
6515 | |
6516 | /* This seems a waste of time as input .opd sections are all | |
6517 | zeros as generated by gcc, but I suppose there's no reason | |
6518 | this will always be so. We might start putting something in | |
6519 | the third word of .opd entries. */ | |
6520 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6521 | { | |
eea6121a AM |
6522 | bfd_byte *loc; |
6523 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6524 | { |
eea6121a AM |
6525 | if (loc != NULL) |
6526 | free (loc); | |
50bc7936 | 6527 | error_ret: |
6cdc0ccc AM |
6528 | if (local_syms != NULL |
6529 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6530 | free (local_syms); | |
6cdc0ccc AM |
6531 | if (elf_section_data (sec)->relocs != relstart) |
6532 | free (relstart); | |
b34976b6 | 6533 | return FALSE; |
6cdc0ccc | 6534 | } |
1e2f5b6e AM |
6535 | sec->contents = loc; |
6536 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6537 | } | |
6538 | ||
6539 | elf_section_data (sec)->relocs = relstart; | |
6540 | ||
3f764659 | 6541 | new_contents = sec->contents; |
3f764659 JJ |
6542 | if (add_aux_fields) |
6543 | { | |
6544 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6545 | if (new_contents == NULL) | |
6546 | return FALSE; | |
6547 | need_pad = FALSE; | |
3f764659 | 6548 | } |
b4f4e59f AM |
6549 | wptr = new_contents; |
6550 | rptr = sec->contents; | |
3f764659 | 6551 | |
1e2f5b6e | 6552 | write_rel = relstart; |
b34976b6 | 6553 | skip = FALSE; |
1e2f5b6e | 6554 | offset = 0; |
3f764659 | 6555 | opd_ent_size = 0; |
1e2f5b6e AM |
6556 | for (rel = relstart; rel < relend; rel++) |
6557 | { | |
50bc7936 AM |
6558 | unsigned long r_symndx; |
6559 | asection *sym_sec; | |
6560 | struct elf_link_hash_entry *h; | |
6561 | Elf_Internal_Sym *sym; | |
6562 | ||
6563 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6564 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6565 | r_symndx, ibfd)) |
50bc7936 AM |
6566 | goto error_ret; |
6567 | ||
1e2f5b6e AM |
6568 | if (rel->r_offset == offset) |
6569 | { | |
50bc7936 | 6570 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6571 | |
6572 | /* See if the .opd entry is full 24 byte or | |
6573 | 16 byte (with fd_aux entry overlapped with next | |
6574 | fd_func). */ | |
6575 | opd_ent_size = 24; | |
6576 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6577 | || (rel + 3 < relend | |
6578 | && rel[2].r_offset == offset + 16 | |
6579 | && rel[3].r_offset == offset + 24 | |
6580 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6581 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6582 | opd_ent_size = 16; | |
6583 | ||
4025353c AM |
6584 | if (h != NULL |
6585 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6586 | { |
6587 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6588 | ppc_hash_table (info)); | |
6589 | if (fdh != NULL | |
6590 | && fdh->elf.root.type != bfd_link_hash_defined | |
6591 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6592 | fdh = NULL; | |
6593 | } | |
1e2f5b6e | 6594 | |
51020317 AM |
6595 | skip = (sym_sec->owner != ibfd |
6596 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6597 | if (skip) |
6598 | { | |
4025353c | 6599 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6600 | { |
6601 | /* Arrange for the function descriptor sym | |
6602 | to be dropped. */ | |
d6fe2dc1 AM |
6603 | fdh->elf.root.u.def.value = 0; |
6604 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6605 | } |
3f764659 | 6606 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6607 | } |
6608 | else | |
1e2f5b6e AM |
6609 | { |
6610 | /* We'll be keeping this opd entry. */ | |
6611 | ||
4025353c | 6612 | if (fdh != NULL) |
1e2f5b6e | 6613 | { |
754021d0 AM |
6614 | /* Redefine the function descriptor symbol to |
6615 | this location in the opd section. It is | |
6616 | necessary to update the value here rather | |
6617 | than using an array of adjustments as we do | |
6618 | for local symbols, because various places | |
6619 | in the generic ELF code use the value | |
6620 | stored in u.def.value. */ | |
3f764659 | 6621 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6622 | fdh->adjust_done = 1; |
1e2f5b6e | 6623 | } |
754021d0 AM |
6624 | |
6625 | /* Local syms are a bit tricky. We could | |
6626 | tweak them as they can be cached, but | |
6627 | we'd need to look through the local syms | |
6628 | for the function descriptor sym which we | |
6629 | don't have at the moment. So keep an | |
6630 | array of adjustments. */ | |
3f764659 JJ |
6631 | opd_adjust[rel->r_offset / 8] |
6632 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6633 | |
6634 | if (wptr != rptr) | |
3f764659 JJ |
6635 | memcpy (wptr, rptr, opd_ent_size); |
6636 | wptr += opd_ent_size; | |
6637 | if (add_aux_fields && opd_ent_size == 16) | |
6638 | { | |
6639 | memset (wptr, '\0', 8); | |
6640 | wptr += 8; | |
6641 | } | |
1e2f5b6e | 6642 | } |
3f764659 JJ |
6643 | rptr += opd_ent_size; |
6644 | offset += opd_ent_size; | |
1e2f5b6e AM |
6645 | } |
6646 | ||
50bc7936 AM |
6647 | if (skip) |
6648 | { | |
60124e18 AM |
6649 | if (!NO_OPD_RELOCS |
6650 | && !info->relocatable | |
18d944df AM |
6651 | && !dec_dynrel_count (rel->r_info, sec, info, |
6652 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6653 | goto error_ret; |
50bc7936 AM |
6654 | } |
6655 | else | |
1e2f5b6e | 6656 | { |
50bc7936 AM |
6657 | /* We need to adjust any reloc offsets to point to the |
6658 | new opd entries. While we're at it, we may as well | |
6659 | remove redundant relocs. */ | |
3f764659 | 6660 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6661 | if (write_rel != rel) |
6662 | memcpy (write_rel, rel, sizeof (*rel)); | |
6663 | ++write_rel; | |
6664 | } | |
6665 | } | |
6666 | ||
3f764659 | 6667 | sec->size = wptr - new_contents; |
1e2f5b6e | 6668 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6669 | if (add_aux_fields) |
6670 | { | |
6671 | free (sec->contents); | |
6672 | sec->contents = new_contents; | |
6673 | } | |
6674 | ||
05bf9422 | 6675 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6676 | elf_bfd_final_link if we are emitting relocs. */ |
6677 | elf_section_data (sec)->rel_hdr.sh_size | |
6678 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6679 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6680 | some_edited = TRUE; |
1e2f5b6e | 6681 | } |
6cdc0ccc | 6682 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6683 | free (relstart); |
6cdc0ccc | 6684 | |
411e1bfb AM |
6685 | if (local_syms != NULL |
6686 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6687 | { | |
6688 | if (!info->keep_memory) | |
6689 | free (local_syms); | |
6690 | else | |
6691 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6692 | } | |
6693 | } | |
6694 | ||
754021d0 AM |
6695 | if (some_edited) |
6696 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6697 | ||
3f764659 JJ |
6698 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6699 | long, add a 8 byte padding after it. */ | |
6700 | if (need_pad != NULL && !info->relocatable) | |
6701 | { | |
6702 | bfd_byte *p; | |
6703 | ||
6704 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6705 | { | |
6706 | BFD_ASSERT (need_pad->size > 0); | |
6707 | ||
6708 | p = bfd_malloc (need_pad->size + 8); | |
6709 | if (p == NULL) | |
6710 | return FALSE; | |
699733f6 | 6711 | |
3f764659 JJ |
6712 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6713 | p, 0, need_pad->size)) | |
6714 | return FALSE; | |
6715 | ||
6716 | need_pad->contents = p; | |
6717 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6718 | } | |
6719 | else | |
6720 | { | |
6721 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6722 | if (p == NULL) | |
6723 | return FALSE; | |
6724 | ||
6725 | need_pad->contents = p; | |
6726 | } | |
6727 | ||
6728 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6729 | need_pad->size += 8; | |
6730 | } | |
6731 | ||
411e1bfb AM |
6732 | return TRUE; |
6733 | } | |
6734 | ||
e1918d23 | 6735 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6736 | |
e1918d23 | 6737 | asection * |
4ce794b7 | 6738 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6739 | { |
411e1bfb AM |
6740 | struct ppc_link_hash_table *htab; |
6741 | ||
411e1bfb | 6742 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6743 | if (htab->tls_get_addr != NULL) |
6744 | { | |
8387904d | 6745 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6746 | |
8387904d AM |
6747 | while (h->elf.root.type == bfd_link_hash_indirect |
6748 | || h->elf.root.type == bfd_link_hash_warning) | |
6749 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6750 | |
6751 | htab->tls_get_addr = h; | |
8387904d AM |
6752 | |
6753 | if (htab->tls_get_addr_fd == NULL | |
6754 | && h->oh != NULL | |
c4f68ce3 AM |
6755 | && h->oh->is_func_descriptor |
6756 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6757 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6758 | htab->tls_get_addr_fd = h->oh; |
6759 | } | |
6760 | ||
6761 | if (htab->tls_get_addr_fd != NULL) | |
6762 | { | |
6763 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6764 | ||
6765 | while (h->elf.root.type == bfd_link_hash_indirect | |
6766 | || h->elf.root.type == bfd_link_hash_warning) | |
6767 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6768 | ||
6769 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6770 | } |
6771 | ||
e1918d23 | 6772 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6773 | } |
411e1bfb | 6774 | |
951fd09b AM |
6775 | /* Run through all the TLS relocs looking for optimization |
6776 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6777 | a preliminary section layout so that we know the TLS segment | |
6778 | offsets. We can't optimize earlier because some optimizations need | |
6779 | to know the tp offset, and we need to optimize before allocating | |
6780 | dynamic relocations. */ | |
6781 | ||
6782 | bfd_boolean | |
4ce794b7 | 6783 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6784 | { |
6785 | bfd *ibfd; | |
6786 | asection *sec; | |
6787 | struct ppc_link_hash_table *htab; | |
6788 | ||
1049f94e | 6789 | if (info->relocatable || info->shared) |
411e1bfb AM |
6790 | return TRUE; |
6791 | ||
951fd09b | 6792 | htab = ppc_hash_table (info); |
411e1bfb AM |
6793 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6794 | { | |
6795 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6796 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6797 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6798 | |
30038c59 AM |
6799 | /* Look at all the sections for this file, with TOC last. */ |
6800 | for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next | |
6801 | : ibfd->sections); | |
6802 | sec != NULL; | |
6803 | sec = (sec == toc ? NULL | |
6804 | : sec->next == NULL ? toc | |
6805 | : sec->next == toc && toc->next ? toc->next | |
6806 | : sec->next)) | |
411e1bfb AM |
6807 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) |
6808 | { | |
6809 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6810 | int expecting_tls_get_addr; | |
30038c59 | 6811 | long toc_ref_index = 0; |
411e1bfb AM |
6812 | |
6813 | /* Read the relocations. */ | |
4ce794b7 | 6814 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6815 | info->keep_memory); |
411e1bfb AM |
6816 | if (relstart == NULL) |
6817 | return FALSE; | |
6818 | ||
6819 | expecting_tls_get_addr = 0; | |
6820 | relend = relstart + sec->reloc_count; | |
6821 | for (rel = relstart; rel < relend; rel++) | |
6822 | { | |
6823 | enum elf_ppc64_reloc_type r_type; | |
6824 | unsigned long r_symndx; | |
6825 | struct elf_link_hash_entry *h; | |
6826 | Elf_Internal_Sym *sym; | |
6827 | asection *sym_sec; | |
e7b938ca AM |
6828 | char *tls_mask; |
6829 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6830 | bfd_vma value; |
951fd09b | 6831 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6832 | |
6833 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6834 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6835 | r_symndx, ibfd)) |
6836 | { | |
6837 | err_free_rel: | |
6838 | if (elf_section_data (sec)->relocs != relstart) | |
6839 | free (relstart); | |
30038c59 AM |
6840 | if (toc_ref != NULL) |
6841 | free (toc_ref); | |
411e1bfb AM |
6842 | if (locsyms != NULL |
6843 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6844 | != (unsigned char *) locsyms)) | |
6845 | free (locsyms); | |
6846 | return FALSE; | |
6847 | } | |
6848 | ||
6849 | if (h != NULL) | |
6850 | { | |
6851 | if (h->root.type != bfd_link_hash_defined | |
6852 | && h->root.type != bfd_link_hash_defweak) | |
6853 | continue; | |
6854 | value = h->root.u.def.value; | |
6855 | } | |
6856 | else | |
4025353c AM |
6857 | /* Symbols referenced by TLS relocs must be of type |
6858 | STT_TLS. So no need for .opd local sym adjust. */ | |
6859 | value = sym->st_value; | |
951fd09b | 6860 | |
411e1bfb | 6861 | ok_tprel = FALSE; |
951fd09b AM |
6862 | is_local = FALSE; |
6863 | if (h == NULL | |
f5385ebf | 6864 | || !h->def_dynamic) |
411e1bfb | 6865 | { |
951fd09b | 6866 | is_local = TRUE; |
411e1bfb AM |
6867 | value += sym_sec->output_offset; |
6868 | value += sym_sec->output_section->vma; | |
e1918d23 | 6869 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6870 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6871 | < (bfd_vma) 1 << 32); | |
6872 | } | |
6873 | ||
4ce794b7 | 6874 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6875 | switch (r_type) |
6876 | { | |
6877 | case R_PPC64_GOT_TLSLD16: | |
6878 | case R_PPC64_GOT_TLSLD16_LO: | |
6879 | case R_PPC64_GOT_TLSLD16_HI: | |
6880 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6881 | /* These relocs should never be against a symbol |
6882 | defined in a shared lib. Leave them alone if | |
6883 | that turns out to be the case. */ | |
e717da7e | 6884 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6885 | if (!is_local) |
6886 | continue; | |
6887 | ||
951fd09b AM |
6888 | /* LD -> LE */ |
6889 | tls_set = 0; | |
6890 | tls_clear = TLS_LD; | |
e7b938ca | 6891 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6892 | expecting_tls_get_addr = 1; |
6893 | break; | |
6894 | ||
6895 | case R_PPC64_GOT_TLSGD16: | |
6896 | case R_PPC64_GOT_TLSGD16_LO: | |
6897 | case R_PPC64_GOT_TLSGD16_HI: | |
6898 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6899 | if (ok_tprel) |
411e1bfb AM |
6900 | /* GD -> LE */ |
6901 | tls_set = 0; | |
6902 | else | |
6903 | /* GD -> IE */ | |
951fd09b AM |
6904 | tls_set = TLS_TLS | TLS_TPRELGD; |
6905 | tls_clear = TLS_GD; | |
e7b938ca | 6906 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6907 | expecting_tls_get_addr = 1; |
6908 | break; | |
6909 | ||
6910 | case R_PPC64_GOT_TPREL16_DS: | |
6911 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6912 | case R_PPC64_GOT_TPREL16_HI: | |
6913 | case R_PPC64_GOT_TPREL16_HA: | |
6914 | expecting_tls_get_addr = 0; | |
6915 | if (ok_tprel) | |
6916 | { | |
6917 | /* IE -> LE */ | |
6918 | tls_set = 0; | |
6919 | tls_clear = TLS_TPREL; | |
e7b938ca | 6920 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6921 | break; |
6922 | } | |
6923 | else | |
6924 | continue; | |
6925 | ||
6926 | case R_PPC64_REL14: | |
6927 | case R_PPC64_REL14_BRTAKEN: | |
6928 | case R_PPC64_REL14_BRNTAKEN: | |
6929 | case R_PPC64_REL24: | |
6930 | if (h != NULL | |
8387904d AM |
6931 | && (h == &htab->tls_get_addr->elf |
6932 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6933 | { |
6934 | if (!expecting_tls_get_addr | |
6935 | && rel != relstart | |
6936 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6937 | == R_PPC64_TOC16) | |
6938 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6939 | == R_PPC64_TOC16_LO))) | |
6940 | { | |
6941 | /* Check for toc tls entries. */ | |
6942 | char *toc_tls; | |
951fd09b | 6943 | int retval; |
411e1bfb | 6944 | |
0d4792f7 | 6945 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6946 | rel - 1, ibfd); |
6947 | if (retval == 0) | |
411e1bfb | 6948 | goto err_free_rel; |
30038c59 AM |
6949 | if (retval > 1 && toc_tls != NULL) |
6950 | { | |
6951 | expecting_tls_get_addr = 1; | |
6952 | if (toc_ref != NULL) | |
6953 | toc_ref[toc_ref_index] = 1; | |
6954 | } | |
411e1bfb AM |
6955 | } |
6956 | ||
6957 | if (expecting_tls_get_addr) | |
6958 | { | |
6959 | struct plt_entry *ent; | |
6960 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6961 | if (ent->addend == 0) | |
6962 | { | |
6963 | if (ent->plt.refcount > 0) | |
6964 | ent->plt.refcount -= 1; | |
6965 | break; | |
6966 | } | |
6967 | } | |
6968 | } | |
6969 | expecting_tls_get_addr = 0; | |
6970 | continue; | |
6971 | ||
30038c59 AM |
6972 | case R_PPC64_TOC16: |
6973 | case R_PPC64_TOC16_LO: | |
6974 | case R_PPC64_TLS: | |
6975 | expecting_tls_get_addr = 0; | |
6976 | if (sym_sec == toc && toc != NULL) | |
6977 | { | |
6978 | /* Mark this toc entry as referenced by a TLS | |
6979 | code sequence. We can do that now in the | |
6980 | case of R_PPC64_TLS, and after checking for | |
6981 | tls_get_addr for the TOC16 relocs. */ | |
6982 | if (toc_ref == NULL) | |
6983 | { | |
6984 | toc_ref = bfd_zmalloc (toc->size / 8); | |
6985 | if (toc_ref == NULL) | |
6986 | goto err_free_rel; | |
6987 | } | |
6988 | if (h != NULL) | |
6989 | value = h->root.u.def.value; | |
6990 | else | |
6991 | value = sym->st_value; | |
6992 | value += rel->r_addend; | |
6993 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
6994 | toc_ref_index = value / 8; | |
6995 | if (r_type == R_PPC64_TLS) | |
6996 | toc_ref[toc_ref_index] = 1; | |
6997 | } | |
6998 | continue; | |
6999 | ||
411e1bfb AM |
7000 | case R_PPC64_TPREL64: |
7001 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7002 | if (sec != toc |
7003 | || toc_ref == NULL | |
7004 | || !toc_ref[rel->r_offset / 8]) | |
7005 | continue; | |
411e1bfb AM |
7006 | if (ok_tprel) |
7007 | { | |
7008 | /* IE -> LE */ | |
7009 | tls_set = TLS_EXPLICIT; | |
7010 | tls_clear = TLS_TPREL; | |
7011 | break; | |
7012 | } | |
7013 | else | |
7014 | continue; | |
7015 | ||
7016 | case R_PPC64_DTPMOD64: | |
7017 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7018 | if (sec != toc |
7019 | || toc_ref == NULL | |
7020 | || !toc_ref[rel->r_offset / 8]) | |
7021 | continue; | |
951fd09b AM |
7022 | if (rel + 1 < relend |
7023 | && (rel[1].r_info | |
7024 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7025 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 7026 | { |
951fd09b | 7027 | if (ok_tprel) |
411e1bfb | 7028 | /* GD -> LE */ |
951fd09b | 7029 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
7030 | else |
7031 | /* GD -> IE */ | |
951fd09b AM |
7032 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
7033 | tls_clear = TLS_GD; | |
411e1bfb AM |
7034 | } |
7035 | else | |
7036 | { | |
951fd09b AM |
7037 | if (!is_local) |
7038 | continue; | |
7039 | ||
7040 | /* LD -> LE */ | |
7041 | tls_set = TLS_EXPLICIT; | |
7042 | tls_clear = TLS_LD; | |
411e1bfb AM |
7043 | } |
7044 | break; | |
7045 | ||
7046 | default: | |
7047 | expecting_tls_get_addr = 0; | |
7048 | continue; | |
7049 | } | |
7050 | ||
7051 | if ((tls_set & TLS_EXPLICIT) == 0) | |
7052 | { | |
7053 | struct got_entry *ent; | |
7054 | ||
7055 | /* Adjust got entry for this reloc. */ | |
7056 | if (h != NULL) | |
7057 | ent = h->got.glist; | |
7058 | else | |
7059 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
7060 | ||
7061 | for (; ent != NULL; ent = ent->next) | |
7062 | if (ent->addend == rel->r_addend | |
e717da7e | 7063 | && ent->owner == ibfd |
e7b938ca | 7064 | && ent->tls_type == tls_type) |
411e1bfb AM |
7065 | break; |
7066 | if (ent == NULL) | |
7067 | abort (); | |
7068 | ||
7069 | if (tls_set == 0) | |
7070 | { | |
7071 | /* We managed to get rid of a got entry. */ | |
7072 | if (ent->got.refcount > 0) | |
7073 | ent->got.refcount -= 1; | |
7074 | } | |
411e1bfb | 7075 | } |
8c1d1bb8 | 7076 | else |
411e1bfb | 7077 | { |
8c1d1bb8 AM |
7078 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
7079 | we'll lose one or two dyn relocs. */ | |
7080 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7081 | NULL, h, sym_sec)) | |
7082 | return FALSE; | |
7083 | ||
7084 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
7085 | { | |
7086 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7087 | NULL, h, sym_sec)) | |
7088 | return FALSE; | |
7089 | } | |
411e1bfb AM |
7090 | } |
7091 | ||
e7b938ca AM |
7092 | *tls_mask |= tls_set; |
7093 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
7094 | } |
7095 | ||
7096 | if (elf_section_data (sec)->relocs != relstart) | |
7097 | free (relstart); | |
7098 | } | |
7099 | ||
30038c59 AM |
7100 | if (toc_ref != NULL) |
7101 | free (toc_ref); | |
7102 | ||
411e1bfb AM |
7103 | if (locsyms != NULL |
7104 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
7105 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
7106 | { |
7107 | if (!info->keep_memory) | |
411e1bfb | 7108 | free (locsyms); |
6cdc0ccc | 7109 | else |
411e1bfb | 7110 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 7111 | } |
1e2f5b6e | 7112 | } |
b34976b6 | 7113 | return TRUE; |
1e2f5b6e | 7114 | } |
b34976b6 | 7115 | |
c5614fa4 AM |
7116 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7117 | the values of any global symbols in a toc section that has been | |
7118 | edited. Globals in toc sections should be a rarity, so this function | |
7119 | sets a flag if any are found in toc sections other than the one just | |
7120 | edited, so that futher hash table traversals can be avoided. */ | |
7121 | ||
7122 | struct adjust_toc_info | |
7123 | { | |
7124 | asection *toc; | |
7125 | unsigned long *skip; | |
7126 | bfd_boolean global_toc_syms; | |
7127 | }; | |
7128 | ||
7129 | static bfd_boolean | |
7130 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7131 | { | |
7132 | struct ppc_link_hash_entry *eh; | |
7133 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7134 | ||
7135 | if (h->root.type == bfd_link_hash_indirect) | |
7136 | return TRUE; | |
7137 | ||
7138 | if (h->root.type == bfd_link_hash_warning) | |
7139 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7140 | ||
7141 | if (h->root.type != bfd_link_hash_defined | |
7142 | && h->root.type != bfd_link_hash_defweak) | |
7143 | return TRUE; | |
7144 | ||
7145 | eh = (struct ppc_link_hash_entry *) h; | |
7146 | if (eh->adjust_done) | |
7147 | return TRUE; | |
7148 | ||
7149 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7150 | { | |
7151 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7152 | if (skip != (unsigned long) -1) | |
7153 | eh->elf.root.u.def.value -= skip; | |
7154 | else | |
7155 | { | |
7156 | (*_bfd_error_handler) | |
7157 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7158 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7159 | eh->elf.root.u.def.value = 0; | |
7160 | } | |
7161 | eh->adjust_done = 1; | |
7162 | } | |
7163 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7164 | toc_inf->global_toc_syms = TRUE; | |
7165 | ||
7166 | return TRUE; | |
7167 | } | |
7168 | ||
7169 | /* Examine all relocs referencing .toc sections in order to remove | |
7170 | unused .toc entries. */ | |
7171 | ||
7172 | bfd_boolean | |
7173 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7174 | { | |
7175 | bfd *ibfd; | |
7176 | struct adjust_toc_info toc_inf; | |
7177 | ||
7178 | toc_inf.global_toc_syms = TRUE; | |
7179 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7180 | { | |
7181 | asection *toc, *sec; | |
7182 | Elf_Internal_Shdr *symtab_hdr; | |
7183 | Elf_Internal_Sym *local_syms; | |
7184 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7185 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7186 | unsigned long *skip, *drop; |
7187 | unsigned char *used; | |
7188 | unsigned char *keep, last, some_unused; | |
7189 | ||
7190 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7191 | if (toc == NULL | |
92b7a70f | 7192 | || toc->size == 0 |
c5614fa4 AM |
7193 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7194 | || elf_discarded_section (toc)) | |
7195 | continue; | |
7196 | ||
7197 | local_syms = NULL; | |
7198 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7199 | sym_hashes = elf_sym_hashes (ibfd); | |
7200 | ||
7201 | /* Look at sections dropped from the final link. */ | |
7202 | skip = NULL; | |
7203 | relstart = NULL; | |
7204 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7205 | { | |
7206 | if (sec->reloc_count == 0 | |
7207 | || !elf_discarded_section (sec) | |
7208 | || get_opd_info (sec) | |
7209 | || (sec->flags & SEC_ALLOC) == 0 | |
7210 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7211 | continue; | |
7212 | ||
7213 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7214 | if (relstart == NULL) | |
7215 | goto error_ret; | |
7216 | ||
7217 | /* Run through the relocs to see which toc entries might be | |
7218 | unused. */ | |
7219 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7220 | { | |
7221 | enum elf_ppc64_reloc_type r_type; | |
7222 | unsigned long r_symndx; | |
7223 | asection *sym_sec; | |
7224 | struct elf_link_hash_entry *h; | |
7225 | Elf_Internal_Sym *sym; | |
7226 | bfd_vma val; | |
7227 | ||
7228 | r_type = ELF64_R_TYPE (rel->r_info); | |
7229 | switch (r_type) | |
7230 | { | |
7231 | default: | |
7232 | continue; | |
7233 | ||
7234 | case R_PPC64_TOC16: | |
7235 | case R_PPC64_TOC16_LO: | |
7236 | case R_PPC64_TOC16_HI: | |
7237 | case R_PPC64_TOC16_HA: | |
7238 | case R_PPC64_TOC16_DS: | |
7239 | case R_PPC64_TOC16_LO_DS: | |
7240 | break; | |
7241 | } | |
7242 | ||
7243 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7244 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7245 | r_symndx, ibfd)) | |
7246 | goto error_ret; | |
7247 | ||
7248 | if (sym_sec != toc) | |
7249 | continue; | |
7250 | ||
7251 | if (h != NULL) | |
7252 | val = h->root.u.def.value; | |
7253 | else | |
7254 | val = sym->st_value; | |
7255 | val += rel->r_addend; | |
7256 | ||
7257 | if (val >= toc->size) | |
7258 | continue; | |
7259 | ||
7260 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7261 | If not, don't mark as unused. */ | |
7262 | if (val & 7) | |
7263 | continue; | |
7264 | ||
7265 | if (skip == NULL) | |
7266 | { | |
7267 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7268 | if (skip == NULL) | |
7269 | goto error_ret; | |
7270 | } | |
7271 | ||
7272 | skip[val >> 3] = 1; | |
7273 | } | |
7274 | ||
7275 | if (elf_section_data (sec)->relocs != relstart) | |
7276 | free (relstart); | |
7277 | } | |
7278 | ||
7279 | if (skip == NULL) | |
7280 | continue; | |
7281 | ||
7282 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7283 | if (used == NULL) | |
7284 | { | |
7285 | error_ret: | |
7286 | if (local_syms != NULL | |
7287 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7288 | free (local_syms); | |
7289 | if (sec != NULL | |
7290 | && relstart != NULL | |
7291 | && elf_section_data (sec)->relocs != relstart) | |
7292 | free (relstart); | |
7293 | if (skip != NULL) | |
7294 | free (skip); | |
7295 | return FALSE; | |
7296 | } | |
7297 | ||
30038c59 AM |
7298 | /* Now check all kept sections that might reference the toc. |
7299 | Check the toc itself last. */ | |
7300 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7301 | : ibfd->sections); | |
c5614fa4 | 7302 | sec != NULL; |
c5614fa4 | 7303 | sec = (sec == toc ? NULL |
c5614fa4 | 7304 | : sec->next == NULL ? toc |
30038c59 | 7305 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7306 | : sec->next)) |
7307 | { | |
7308 | int repeat; | |
7309 | ||
7310 | if (sec->reloc_count == 0 | |
7311 | || elf_discarded_section (sec) | |
7312 | || get_opd_info (sec) | |
7313 | || (sec->flags & SEC_ALLOC) == 0 | |
7314 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7315 | continue; | |
7316 | ||
7317 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7318 | if (relstart == NULL) | |
7319 | goto error_ret; | |
7320 | ||
7321 | /* Mark toc entries referenced as used. */ | |
7322 | repeat = 0; | |
7323 | do | |
7324 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7325 | { | |
7326 | enum elf_ppc64_reloc_type r_type; | |
7327 | unsigned long r_symndx; | |
7328 | asection *sym_sec; | |
7329 | struct elf_link_hash_entry *h; | |
7330 | Elf_Internal_Sym *sym; | |
7331 | bfd_vma val; | |
7332 | ||
7333 | r_type = ELF64_R_TYPE (rel->r_info); | |
7334 | switch (r_type) | |
7335 | { | |
7336 | case R_PPC64_TOC16: | |
7337 | case R_PPC64_TOC16_LO: | |
7338 | case R_PPC64_TOC16_HI: | |
7339 | case R_PPC64_TOC16_HA: | |
7340 | case R_PPC64_TOC16_DS: | |
7341 | case R_PPC64_TOC16_LO_DS: | |
7342 | /* In case we're taking addresses of toc entries. */ | |
7343 | case R_PPC64_ADDR64: | |
7344 | break; | |
7345 | ||
7346 | default: | |
7347 | continue; | |
7348 | } | |
7349 | ||
7350 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7351 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7352 | r_symndx, ibfd)) | |
7353 | { | |
7354 | free (used); | |
7355 | goto error_ret; | |
7356 | } | |
7357 | ||
7358 | if (sym_sec != toc) | |
7359 | continue; | |
7360 | ||
7361 | if (h != NULL) | |
7362 | val = h->root.u.def.value; | |
7363 | else | |
7364 | val = sym->st_value; | |
7365 | val += rel->r_addend; | |
7366 | ||
7367 | if (val >= toc->size) | |
7368 | continue; | |
7369 | ||
7370 | /* For the toc section, we only mark as used if | |
7371 | this entry itself isn't unused. */ | |
7372 | if (sec == toc | |
7373 | && !used[val >> 3] | |
7374 | && (used[rel->r_offset >> 3] | |
7375 | || !skip[rel->r_offset >> 3])) | |
7376 | /* Do all the relocs again, to catch reference | |
7377 | chains. */ | |
7378 | repeat = 1; | |
7379 | ||
7380 | used[val >> 3] = 1; | |
7381 | } | |
7382 | while (repeat); | |
7383 | } | |
7384 | ||
7385 | /* Merge the used and skip arrays. Assume that TOC | |
7386 | doublewords not appearing as either used or unused belong | |
7387 | to to an entry more than one doubleword in size. */ | |
7388 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7389 | drop < skip + (toc->size + 7) / 8; | |
7390 | ++drop, ++keep) | |
7391 | { | |
7392 | if (*keep) | |
7393 | { | |
7394 | *drop = 0; | |
7395 | last = 0; | |
7396 | } | |
7397 | else if (*drop) | |
7398 | { | |
7399 | some_unused = 1; | |
7400 | last = 1; | |
7401 | } | |
7402 | else | |
7403 | *drop = last; | |
7404 | } | |
7405 | ||
7406 | free (used); | |
7407 | ||
7408 | if (some_unused) | |
7409 | { | |
7410 | bfd_byte *contents, *src; | |
7411 | unsigned long off; | |
7412 | ||
7413 | /* Shuffle the toc contents, and at the same time convert the | |
7414 | skip array from booleans into offsets. */ | |
7415 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7416 | goto error_ret; | |
7417 | ||
7418 | elf_section_data (toc)->this_hdr.contents = contents; | |
7419 | ||
7420 | for (src = contents, off = 0, drop = skip; | |
7421 | src < contents + toc->size; | |
7422 | src += 8, ++drop) | |
7423 | { | |
7424 | if (*drop) | |
7425 | { | |
7426 | *drop = (unsigned long) -1; | |
7427 | off += 8; | |
7428 | } | |
7429 | else if (off != 0) | |
7430 | { | |
7431 | *drop = off; | |
7432 | memcpy (src - off, src, 8); | |
7433 | } | |
7434 | } | |
7435 | toc->rawsize = toc->size; | |
7436 | toc->size = src - contents - off; | |
7437 | ||
92b7a70f AM |
7438 | if (toc->reloc_count != 0) |
7439 | { | |
7440 | Elf_Internal_Rela *wrel; | |
7441 | bfd_size_type sz; | |
c5614fa4 | 7442 | |
92b7a70f AM |
7443 | /* Read toc relocs. */ |
7444 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7445 | TRUE); | |
7446 | if (relstart == NULL) | |
7447 | goto error_ret; | |
7448 | ||
7449 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7450 | wrel = relstart; | |
7451 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7452 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7453 | { | |
7454 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7455 | wrel->r_info = rel->r_info; | |
7456 | wrel->r_addend = rel->r_addend; | |
7457 | ++wrel; | |
7458 | } | |
8c1d1bb8 AM |
7459 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7460 | &local_syms, NULL, NULL)) | |
7461 | goto error_ret; | |
35090471 | 7462 | |
92b7a70f AM |
7463 | toc->reloc_count = wrel - relstart; |
7464 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7465 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7466 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7467 | } | |
c5614fa4 AM |
7468 | |
7469 | /* Adjust addends for relocs against the toc section sym. */ | |
7470 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7471 | { | |
7472 | if (sec->reloc_count == 0 | |
7473 | || elf_discarded_section (sec)) | |
7474 | continue; | |
7475 | ||
7476 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7477 | TRUE); | |
7478 | if (relstart == NULL) | |
7479 | goto error_ret; | |
7480 | ||
7481 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7482 | { | |
7483 | enum elf_ppc64_reloc_type r_type; | |
7484 | unsigned long r_symndx; | |
7485 | asection *sym_sec; | |
7486 | struct elf_link_hash_entry *h; | |
7487 | Elf_Internal_Sym *sym; | |
7488 | ||
7489 | r_type = ELF64_R_TYPE (rel->r_info); | |
7490 | switch (r_type) | |
7491 | { | |
7492 | default: | |
7493 | continue; | |
7494 | ||
7495 | case R_PPC64_TOC16: | |
7496 | case R_PPC64_TOC16_LO: | |
7497 | case R_PPC64_TOC16_HI: | |
7498 | case R_PPC64_TOC16_HA: | |
7499 | case R_PPC64_TOC16_DS: | |
7500 | case R_PPC64_TOC16_LO_DS: | |
7501 | case R_PPC64_ADDR64: | |
7502 | break; | |
7503 | } | |
7504 | ||
7505 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7506 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7507 | r_symndx, ibfd)) | |
7508 | goto error_ret; | |
7509 | ||
7510 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7511 | continue; | |
7512 | ||
7513 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7514 | } | |
7515 | } | |
7516 | ||
7517 | /* We shouldn't have local or global symbols defined in the TOC, | |
7518 | but handle them anyway. */ | |
7519 | if (local_syms != NULL) | |
7520 | { | |
7521 | Elf_Internal_Sym *sym; | |
7522 | ||
7523 | for (sym = local_syms; | |
7524 | sym < local_syms + symtab_hdr->sh_info; | |
7525 | ++sym) | |
7526 | if (sym->st_shndx != SHN_UNDEF | |
7527 | && (sym->st_shndx < SHN_LORESERVE | |
7528 | || sym->st_shndx > SHN_HIRESERVE) | |
7529 | && sym->st_value != 0 | |
7530 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7531 | { | |
7532 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7533 | sym->st_value -= skip[sym->st_value >> 3]; | |
7534 | else | |
7535 | { | |
7536 | (*_bfd_error_handler) | |
7537 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7538 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7539 | NULL)); | |
c5614fa4 AM |
7540 | sym->st_value = 0; |
7541 | sym->st_shndx = SHN_ABS; | |
7542 | } | |
7543 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7544 | } | |
7545 | } | |
7546 | ||
7547 | /* Finally, adjust any global syms defined in the toc. */ | |
7548 | if (toc_inf.global_toc_syms) | |
7549 | { | |
7550 | toc_inf.toc = toc; | |
7551 | toc_inf.skip = skip; | |
7552 | toc_inf.global_toc_syms = FALSE; | |
7553 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7554 | &toc_inf); | |
7555 | } | |
7556 | } | |
7557 | ||
7558 | if (local_syms != NULL | |
7559 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7560 | { | |
7561 | if (!info->keep_memory) | |
7562 | free (local_syms); | |
7563 | else | |
7564 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7565 | } | |
7566 | free (skip); | |
7567 | } | |
7568 | ||
7569 | return TRUE; | |
7570 | } | |
7571 | ||
65f38f15 AM |
7572 | /* Allocate space in .plt, .got and associated reloc sections for |
7573 | dynamic relocs. */ | |
5bd4f169 | 7574 | |
b34976b6 | 7575 | static bfd_boolean |
4ce794b7 | 7576 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7577 | { |
65f38f15 AM |
7578 | struct bfd_link_info *info; |
7579 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7580 | asection *s; |
65f38f15 AM |
7581 | struct ppc_link_hash_entry *eh; |
7582 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7583 | struct got_entry *gent; |
5bd4f169 | 7584 | |
e92d460e | 7585 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7586 | return TRUE; |
5bd4f169 | 7587 | |
e92d460e AM |
7588 | if (h->root.type == bfd_link_hash_warning) |
7589 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7590 | ||
65f38f15 AM |
7591 | info = (struct bfd_link_info *) inf; |
7592 | htab = ppc_hash_table (info); | |
5bd4f169 | 7593 | |
65f38f15 | 7594 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7595 | && h->dynindx != -1 |
9c7a29a3 | 7596 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7597 | { |
411e1bfb AM |
7598 | struct plt_entry *pent; |
7599 | bfd_boolean doneone = FALSE; | |
7600 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7601 | if (pent->plt.refcount > 0) | |
7602 | { | |
411e1bfb AM |
7603 | /* If this is the first .plt entry, make room for the special |
7604 | first entry. */ | |
4ce794b7 | 7605 | s = htab->plt; |
eea6121a AM |
7606 | if (s->size == 0) |
7607 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7608 | |
eea6121a | 7609 | pent->plt.offset = s->size; |
411e1bfb AM |
7610 | |
7611 | /* Make room for this entry. */ | |
eea6121a | 7612 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7613 | |
7614 | /* Make room for the .glink code. */ | |
4ce794b7 | 7615 | s = htab->glink; |
eea6121a AM |
7616 | if (s->size == 0) |
7617 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7618 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7619 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7620 | s->size += 4; | |
7621 | s->size += 2*4; | |
411e1bfb AM |
7622 | |
7623 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7624 | s = htab->relplt; |
eea6121a | 7625 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7626 | doneone = TRUE; |
7627 | } | |
7628 | else | |
7629 | pent->plt.offset = (bfd_vma) -1; | |
7630 | if (!doneone) | |
65f38f15 | 7631 | { |
411e1bfb | 7632 | h->plt.plist = NULL; |
f5385ebf | 7633 | h->needs_plt = 0; |
65f38f15 AM |
7634 | } |
7635 | } | |
7636 | else | |
7637 | { | |
411e1bfb | 7638 | h->plt.plist = NULL; |
f5385ebf | 7639 | h->needs_plt = 0; |
65f38f15 AM |
7640 | } |
7641 | ||
951fd09b AM |
7642 | eh = (struct ppc_link_hash_entry *) h; |
7643 | /* Run through the TLS GD got entries first if we're changing them | |
7644 | to TPREL. */ | |
e7b938ca | 7645 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7646 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7647 | if (gent->got.refcount > 0 | |
7648 | && (gent->tls_type & TLS_GD) != 0) | |
7649 | { | |
7650 | /* This was a GD entry that has been converted to TPREL. If | |
7651 | there happens to be a TPREL entry we can use that one. */ | |
7652 | struct got_entry *ent; | |
7653 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7654 | if (ent->got.refcount > 0 | |
7655 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7656 | && ent->addend == gent->addend |
7657 | && ent->owner == gent->owner) | |
951fd09b AM |
7658 | { |
7659 | gent->got.refcount = 0; | |
7660 | break; | |
7661 | } | |
7662 | ||
7663 | /* If not, then we'll be using our own TPREL entry. */ | |
7664 | if (gent->got.refcount != 0) | |
7665 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7666 | } | |
7667 | ||
411e1bfb AM |
7668 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7669 | if (gent->got.refcount > 0) | |
7670 | { | |
951fd09b AM |
7671 | bfd_boolean dyn; |
7672 | ||
411e1bfb | 7673 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7674 | Undefined weak syms won't yet be marked as dynamic, |
7675 | nor will all TLS symbols. */ | |
411e1bfb | 7676 | if (h->dynindx == -1 |
f5385ebf | 7677 | && !h->forced_local) |
411e1bfb | 7678 | { |
c152c796 | 7679 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7680 | return FALSE; |
7681 | } | |
65f38f15 | 7682 | |
d881513a | 7683 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7684 | && !h->def_dynamic) |
411e1bfb | 7685 | { |
e717da7e | 7686 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7687 | continue; |
411e1bfb | 7688 | } |
951fd09b | 7689 | |
e717da7e | 7690 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7691 | gent->got.offset = s->size; |
7692 | s->size | |
d881513a | 7693 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7694 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7695 | if ((info->shared |
7696 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7697 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7698 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7699 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7700 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7701 | ? 2 * sizeof (Elf64_External_Rela) |
7702 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7703 | } |
7704 | else | |
7705 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7706 | |
65f38f15 | 7707 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7708 | return TRUE; |
65f38f15 AM |
7709 | |
7710 | /* In the shared -Bsymbolic case, discard space allocated for | |
7711 | dynamic pc-relative relocs against symbols which turn out to be | |
7712 | defined in regular objects. For the normal shared case, discard | |
7713 | space for relocs that have become local due to symbol visibility | |
7714 | changes. */ | |
7715 | ||
7716 | if (info->shared) | |
7717 | { | |
9c7a29a3 AM |
7718 | /* Relocs that use pc_count are those that appear on a call insn, |
7719 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7720 | generated via assembly. We want calls to protected symbols to | |
7721 | resolve directly to the function rather than going via the plt. | |
7722 | If people want function pointer comparisons to work as expected | |
7723 | then they should avoid writing weird assembly. */ | |
09695f56 | 7724 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7725 | { |
7726 | struct ppc_dyn_relocs **pp; | |
7727 | ||
7728 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7729 | { |
65f38f15 AM |
7730 | p->count -= p->pc_count; |
7731 | p->pc_count = 0; | |
7732 | if (p->count == 0) | |
7733 | *pp = p->next; | |
7734 | else | |
7735 | pp = &p->next; | |
5bd4f169 | 7736 | } |
65f38f15 | 7737 | } |
4e795f50 AM |
7738 | |
7739 | /* Also discard relocs on undefined weak syms with non-default | |
7740 | visibility. */ | |
cab87ef9 AM |
7741 | if (eh->dyn_relocs != NULL |
7742 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7743 | { |
7744 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7745 | eh->dyn_relocs = NULL; | |
7746 | ||
7747 | /* Make sure this symbol is output as a dynamic symbol. | |
7748 | Undefined weak syms won't yet be marked as dynamic. */ | |
7749 | else if (h->dynindx == -1 | |
7750 | && !h->forced_local) | |
7751 | { | |
7752 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7753 | return FALSE; | |
7754 | } | |
7755 | } | |
65f38f15 | 7756 | } |
f4656909 | 7757 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7758 | { |
7759 | /* For the non-shared case, discard space for relocs against | |
7760 | symbols which turn out to need copy relocs or are not | |
7761 | dynamic. */ | |
7762 | ||
f5385ebf AM |
7763 | if (!h->non_got_ref |
7764 | && h->def_dynamic | |
7765 | && !h->def_regular) | |
65f38f15 AM |
7766 | { |
7767 | /* Make sure this symbol is output as a dynamic symbol. | |
7768 | Undefined weak syms won't yet be marked as dynamic. */ | |
7769 | if (h->dynindx == -1 | |
f5385ebf | 7770 | && !h->forced_local) |
65f38f15 | 7771 | { |
c152c796 | 7772 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7773 | return FALSE; |
65f38f15 AM |
7774 | } |
7775 | ||
7776 | /* If that succeeded, we know we'll be keeping all the | |
7777 | relocs. */ | |
7778 | if (h->dynindx != -1) | |
7779 | goto keep; | |
7780 | } | |
7781 | ||
7782 | eh->dyn_relocs = NULL; | |
7783 | ||
ec338859 | 7784 | keep: ; |
65f38f15 AM |
7785 | } |
7786 | ||
7787 | /* Finally, allocate space. */ | |
7788 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7789 | { | |
7790 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7791 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7792 | } |
7793 | ||
b34976b6 | 7794 | return TRUE; |
65f38f15 AM |
7795 | } |
7796 | ||
7797 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7798 | ||
b34976b6 | 7799 | static bfd_boolean |
4ce794b7 | 7800 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7801 | { |
7802 | struct ppc_link_hash_entry *eh; | |
7803 | struct ppc_dyn_relocs *p; | |
7804 | ||
e92d460e AM |
7805 | if (h->root.type == bfd_link_hash_warning) |
7806 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7807 | ||
65f38f15 AM |
7808 | eh = (struct ppc_link_hash_entry *) h; |
7809 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7810 | { | |
7811 | asection *s = p->sec->output_section; | |
7812 | ||
7813 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7814 | { | |
4ce794b7 | 7815 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7816 | |
7817 | info->flags |= DF_TEXTREL; | |
7818 | ||
7819 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7820 | return FALSE; |
65f38f15 AM |
7821 | } |
7822 | } | |
b34976b6 | 7823 | return TRUE; |
65f38f15 AM |
7824 | } |
7825 | ||
7826 | /* Set the sizes of the dynamic sections. */ | |
7827 | ||
b34976b6 | 7828 | static bfd_boolean |
4ce794b7 AM |
7829 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7830 | struct bfd_link_info *info) | |
65f38f15 AM |
7831 | { |
7832 | struct ppc_link_hash_table *htab; | |
7833 | bfd *dynobj; | |
7834 | asection *s; | |
b34976b6 | 7835 | bfd_boolean relocs; |
65f38f15 AM |
7836 | bfd *ibfd; |
7837 | ||
7838 | htab = ppc_hash_table (info); | |
7839 | dynobj = htab->elf.dynobj; | |
7840 | if (dynobj == NULL) | |
7841 | abort (); | |
7842 | ||
7843 | if (htab->elf.dynamic_sections_created) | |
7844 | { | |
7845 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7846 | if (info->executable) |
65f38f15 AM |
7847 | { |
7848 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7849 | if (s == NULL) | |
7850 | abort (); | |
eea6121a | 7851 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7852 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7853 | } | |
7854 | } | |
7855 | ||
7856 | /* Set up .got offsets for local syms, and space for local dynamic | |
7857 | relocs. */ | |
7858 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7859 | { | |
411e1bfb AM |
7860 | struct got_entry **lgot_ents; |
7861 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7862 | char *lgot_masks; |
65f38f15 AM |
7863 | bfd_size_type locsymcount; |
7864 | Elf_Internal_Shdr *symtab_hdr; | |
7865 | asection *srel; | |
7866 | ||
ee75fd95 | 7867 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7868 | continue; |
7869 | ||
e717da7e AM |
7870 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7871 | { | |
7872 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7873 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7874 | s->size += 16; | |
e717da7e AM |
7875 | if (info->shared) |
7876 | { | |
7877 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7878 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7879 | } |
7880 | } | |
7881 | else | |
7882 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7883 | ||
65f38f15 AM |
7884 | for (s = ibfd->sections; s != NULL; s = s->next) |
7885 | { | |
ec338859 | 7886 | struct ppc_dyn_relocs *p; |
65f38f15 | 7887 | |
6edfbbad | 7888 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7889 | { |
ec338859 AM |
7890 | if (!bfd_is_abs_section (p->sec) |
7891 | && bfd_is_abs_section (p->sec->output_section)) | |
7892 | { | |
7893 | /* Input section has been discarded, either because | |
7894 | it is a copy of a linkonce section or due to | |
7895 | linker script /DISCARD/, so we'll be discarding | |
7896 | the relocs too. */ | |
7897 | } | |
248866a8 | 7898 | else if (p->count != 0) |
ec338859 AM |
7899 | { |
7900 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7901 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7902 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7903 | info->flags |= DF_TEXTREL; | |
ec338859 | 7904 | } |
65f38f15 AM |
7905 | } |
7906 | } | |
7907 | ||
411e1bfb AM |
7908 | lgot_ents = elf_local_got_ents (ibfd); |
7909 | if (!lgot_ents) | |
65f38f15 AM |
7910 | continue; |
7911 | ||
7912 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7913 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7914 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7915 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7916 | s = ppc64_elf_tdata (ibfd)->got; |
7917 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7918 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7919 | { |
411e1bfb AM |
7920 | struct got_entry *ent; |
7921 | ||
7922 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7923 | if (ent->got.refcount > 0) | |
7924 | { | |
e7b938ca | 7925 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7926 | { |
e717da7e | 7927 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7928 | { |
eea6121a AM |
7929 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7930 | s->size += 16; | |
411e1bfb | 7931 | if (info->shared) |
eea6121a | 7932 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7933 | } |
e717da7e | 7934 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7935 | } |
7936 | else | |
7937 | { | |
eea6121a | 7938 | ent->got.offset = s->size; |
e7b938ca | 7939 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7940 | { |
eea6121a | 7941 | s->size += 16; |
411e1bfb | 7942 | if (info->shared) |
eea6121a | 7943 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7944 | } |
7945 | else | |
7946 | { | |
eea6121a | 7947 | s->size += 8; |
411e1bfb | 7948 | if (info->shared) |
eea6121a | 7949 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7950 | } |
7951 | } | |
7952 | } | |
7953 | else | |
7954 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7955 | } |
7956 | } | |
7957 | ||
7958 | /* Allocate global sym .plt and .got entries, and space for global | |
7959 | sym dynamic relocs. */ | |
4ce794b7 | 7960 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7961 | |
7962 | /* We now have determined the sizes of the various dynamic sections. | |
7963 | Allocate memory for them. */ | |
b34976b6 | 7964 | relocs = FALSE; |
65f38f15 AM |
7965 | for (s = dynobj->sections; s != NULL; s = s->next) |
7966 | { | |
7967 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7968 | continue; | |
7969 | ||
4ce794b7 | 7970 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7971 | /* These haven't been allocated yet; don't strip. */ |
7972 | continue; | |
e717da7e AM |
7973 | else if (s == htab->got |
7974 | || s == htab->plt | |
c456f082 AM |
7975 | || s == htab->glink |
7976 | || s == htab->dynbss) | |
65f38f15 AM |
7977 | { |
7978 | /* Strip this section if we don't need it; see the | |
7979 | comment below. */ | |
5bd4f169 | 7980 | } |
0112cd26 | 7981 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 7982 | { |
c456f082 | 7983 | if (s->size != 0) |
5bd4f169 | 7984 | { |
4ce794b7 | 7985 | if (s != htab->relplt) |
b34976b6 | 7986 | relocs = TRUE; |
5bd4f169 AM |
7987 | |
7988 | /* We use the reloc_count field as a counter if we need | |
7989 | to copy relocs into the output file. */ | |
7990 | s->reloc_count = 0; | |
7991 | } | |
7992 | } | |
65f38f15 | 7993 | else |
5bd4f169 AM |
7994 | { |
7995 | /* It's not one of our sections, so don't allocate space. */ | |
7996 | continue; | |
7997 | } | |
7998 | ||
eea6121a | 7999 | if (s->size == 0) |
5bd4f169 | 8000 | { |
c456f082 AM |
8001 | /* If we don't need this section, strip it from the |
8002 | output file. This is mostly to handle .rela.bss and | |
8003 | .rela.plt. We must create both sections in | |
8004 | create_dynamic_sections, because they must be created | |
8005 | before the linker maps input sections to output | |
8006 | sections. The linker does that before | |
8007 | adjust_dynamic_symbol is called, and it is that | |
8008 | function which decides whether anything needs to go | |
8009 | into these sections. */ | |
8423293d | 8010 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8011 | continue; |
8012 | } | |
8013 | ||
c456f082 | 8014 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8015 | continue; |
8016 | ||
65f38f15 AM |
8017 | /* Allocate memory for the section contents. We use bfd_zalloc |
8018 | here in case unused entries are not reclaimed before the | |
8019 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8020 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8021 | sections instead of garbage. | |
8022 | We also rely on the section contents being zero when writing | |
8023 | the GOT. */ | |
eea6121a | 8024 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8025 | if (s->contents == NULL) |
b34976b6 | 8026 | return FALSE; |
5bd4f169 AM |
8027 | } |
8028 | ||
e717da7e AM |
8029 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8030 | { | |
ee75fd95 | 8031 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
8032 | continue; |
8033 | ||
e717da7e AM |
8034 | s = ppc64_elf_tdata (ibfd)->got; |
8035 | if (s != NULL && s != htab->got) | |
8036 | { | |
eea6121a | 8037 | if (s->size == 0) |
8423293d | 8038 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8039 | else |
8040 | { | |
eea6121a | 8041 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8042 | if (s->contents == NULL) |
8043 | return FALSE; | |
8044 | } | |
8045 | } | |
8046 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8047 | if (s != NULL) | |
8048 | { | |
eea6121a | 8049 | if (s->size == 0) |
8423293d | 8050 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8051 | else |
8052 | { | |
eea6121a | 8053 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8054 | if (s->contents == NULL) |
8055 | return FALSE; | |
8056 | relocs = TRUE; | |
8057 | s->reloc_count = 0; | |
8058 | } | |
8059 | } | |
8060 | } | |
8061 | ||
e86ce104 | 8062 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8063 | { |
8064 | /* Add some entries to the .dynamic section. We fill in the | |
8065 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8066 | must add the entries now so that we get the correct size for | |
8067 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8068 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8069 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8070 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8071 | |
36af4a4e | 8072 | if (info->executable) |
5bd4f169 | 8073 | { |
dc810e39 | 8074 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8075 | return FALSE; |
5bd4f169 AM |
8076 | } |
8077 | ||
eea6121a | 8078 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8079 | { |
dc810e39 AM |
8080 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8081 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8082 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8083 | || !add_dynamic_entry (DT_JMPREL, 0) |
8084 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8085 | return FALSE; |
5bd4f169 AM |
8086 | } |
8087 | ||
19397422 AM |
8088 | if (NO_OPD_RELOCS) |
8089 | { | |
8090 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8091 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8092 | return FALSE; |
19397422 AM |
8093 | } |
8094 | ||
5bd4f169 AM |
8095 | if (relocs) |
8096 | { | |
dc810e39 AM |
8097 | if (!add_dynamic_entry (DT_RELA, 0) |
8098 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8099 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8100 | return FALSE; |
5bd4f169 | 8101 | |
65f38f15 AM |
8102 | /* If any dynamic relocs apply to a read-only section, |
8103 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8104 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8105 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8106 | |
65f38f15 | 8107 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8108 | { |
65f38f15 | 8109 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8110 | return FALSE; |
5bd4f169 | 8111 | } |
5bd4f169 | 8112 | } |
5bd4f169 | 8113 | } |
65f38f15 | 8114 | #undef add_dynamic_entry |
5bd4f169 | 8115 | |
b34976b6 | 8116 | return TRUE; |
5bd4f169 AM |
8117 | } |
8118 | ||
721956f4 | 8119 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8120 | |
4ce794b7 AM |
8121 | static inline enum ppc_stub_type |
8122 | ppc_type_of_stub (asection *input_sec, | |
8123 | const Elf_Internal_Rela *rel, | |
8124 | struct ppc_link_hash_entry **hash, | |
8125 | bfd_vma destination) | |
5bd4f169 | 8126 | { |
721956f4 AM |
8127 | struct ppc_link_hash_entry *h = *hash; |
8128 | bfd_vma location; | |
8129 | bfd_vma branch_offset; | |
8130 | bfd_vma max_branch_offset; | |
4ce794b7 | 8131 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8132 | |
721956f4 AM |
8133 | if (h != NULL) |
8134 | { | |
7fe2b9a6 AM |
8135 | struct ppc_link_hash_entry *fdh = h; |
8136 | if (fdh->oh != NULL | |
8137 | && fdh->oh->is_func_descriptor) | |
8138 | fdh = fdh->oh; | |
8387904d | 8139 | |
7fe2b9a6 | 8140 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8141 | { |
411e1bfb | 8142 | struct plt_entry *ent; |
8387904d | 8143 | |
7fe2b9a6 | 8144 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8145 | if (ent->addend == rel->r_addend |
8146 | && ent->plt.offset != (bfd_vma) -1) | |
8147 | { | |
7fe2b9a6 | 8148 | *hash = fdh; |
411e1bfb AM |
8149 | return ppc_stub_plt_call; |
8150 | } | |
5bd4f169 AM |
8151 | } |
8152 | ||
7fe2b9a6 AM |
8153 | /* Here, we know we don't have a plt entry. If we don't have a |
8154 | either a defined function descriptor or a defined entry symbol | |
8155 | in a regular object file, then it is pointless trying to make | |
8156 | any other type of stub. */ | |
8157 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8158 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8159 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8160 | && !((h->elf.root.type == bfd_link_hash_defined | |
8161 | || h->elf.root.type == bfd_link_hash_defweak) | |
8162 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8163 | return ppc_stub_none; |
5d1634d7 | 8164 | } |
5d1634d7 | 8165 | |
721956f4 AM |
8166 | /* Determine where the call point is. */ |
8167 | location = (input_sec->output_offset | |
8168 | + input_sec->output_section->vma | |
8169 | + rel->r_offset); | |
5d1634d7 | 8170 | |
721956f4 AM |
8171 | branch_offset = destination - location; |
8172 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8173 | |
721956f4 AM |
8174 | /* Determine if a long branch stub is needed. */ |
8175 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8176 | if (r_type != R_PPC64_REL24) |
721956f4 | 8177 | max_branch_offset = 1 << 15; |
5d1634d7 | 8178 | |
721956f4 AM |
8179 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8180 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8181 | is needed later. */ | |
8182 | return ppc_stub_long_branch; | |
5d1634d7 | 8183 | |
721956f4 | 8184 | return ppc_stub_none; |
5d1634d7 AM |
8185 | } |
8186 | ||
8187 | /* Build a .plt call stub. */ | |
8188 | ||
4ce794b7 AM |
8189 | static inline bfd_byte * |
8190 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8191 | { |
8192 | #define PPC_LO(v) ((v) & 0xffff) | |
8193 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8194 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8195 | ||
5d1634d7 | 8196 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 8197 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
8198 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
8199 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8200 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8201 | offset += 8; |
8202 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
8203 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8204 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8205 | offset += 8; |
8206 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8207 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8208 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8209 | return p; | |
8210 | } | |
8211 | ||
b34976b6 | 8212 | static bfd_boolean |
4ce794b7 | 8213 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8214 | { |
721956f4 AM |
8215 | struct ppc_stub_hash_entry *stub_entry; |
8216 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8217 | struct bfd_link_info *info; |
8218 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8219 | bfd_byte *loc; |
8220 | bfd_byte *p; | |
8221 | unsigned int indx; | |
411e1bfb | 8222 | struct plt_entry *ent; |
ee75fd95 | 8223 | bfd_vma dest, off; |
721956f4 | 8224 | int size; |
5d1634d7 | 8225 | |
721956f4 AM |
8226 | /* Massage our args to the form they really have. */ |
8227 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8228 | info = in_arg; |
5d1634d7 | 8229 | |
5d1634d7 AM |
8230 | htab = ppc_hash_table (info); |
8231 | ||
721956f4 | 8232 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8233 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8234 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8235 | |
4ce794b7 | 8236 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8237 | switch (stub_entry->stub_type) |
5d1634d7 | 8238 | { |
721956f4 | 8239 | case ppc_stub_long_branch: |
ad8e1ba5 | 8240 | case ppc_stub_long_branch_r2off: |
721956f4 | 8241 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8242 | off = dest = (stub_entry->target_value |
8243 | + stub_entry->target_section->output_offset | |
8244 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8245 | |
721956f4 AM |
8246 | /* And this is where we are coming from. */ |
8247 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8248 | + stub_entry->stub_sec->output_offset |
8249 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8250 | |
ad8e1ba5 AM |
8251 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
8252 | size = 4; | |
8253 | else | |
8254 | { | |
8255 | bfd_vma r2off; | |
8256 | ||
8257 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8258 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8259 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8260 | loc += 4; |
97b639ba | 8261 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8262 | loc += 4; |
97b639ba | 8263 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8264 | loc += 4; |
8265 | off -= 12; | |
8266 | size = 16; | |
8267 | } | |
97b639ba | 8268 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8269 | |
5c3dead3 AM |
8270 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8271 | { | |
8272 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8273 | stub_entry->root.string); | |
8274 | htab->stub_error = TRUE; | |
8275 | return FALSE; | |
8276 | } | |
ee75fd95 AM |
8277 | |
8278 | if (info->emitrelocations) | |
8279 | { | |
8280 | Elf_Internal_Rela *relocs, *r; | |
8281 | struct bfd_elf_section_data *elfsec_data; | |
8282 | ||
8283 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8284 | relocs = elfsec_data->relocs; | |
8285 | if (relocs == NULL) | |
8286 | { | |
8287 | bfd_size_type relsize; | |
8288 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8289 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8290 | if (relocs == NULL) | |
8291 | return FALSE; | |
8292 | elfsec_data->relocs = relocs; | |
8293 | elfsec_data->rel_hdr.sh_size = relsize; | |
8294 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8295 | stub_entry->stub_sec->reloc_count = 0; | |
8296 | } | |
8297 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8298 | stub_entry->stub_sec->reloc_count += 1; | |
8299 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8300 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8301 | r->r_addend = dest; | |
8302 | if (stub_entry->h != NULL) | |
8303 | { | |
8304 | struct elf_link_hash_entry **hashes; | |
8305 | unsigned long symndx; | |
8306 | struct ppc_link_hash_entry *h; | |
8307 | ||
8308 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8309 | if (hashes == NULL) | |
8310 | { | |
8311 | bfd_size_type hsize; | |
8312 | ||
8313 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8314 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8315 | if (hashes == NULL) | |
8316 | return FALSE; | |
8317 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8318 | htab->stub_globals = 1; | |
8319 | } | |
8320 | symndx = htab->stub_globals++; | |
8321 | h = stub_entry->h; | |
8322 | hashes[symndx] = &h->elf; | |
8323 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8324 | if (h->oh != NULL && h->oh->is_func) | |
8325 | h = h->oh; | |
8326 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8327 | /* H is an opd symbol. The addend must be zero. */ | |
8328 | r->r_addend = 0; | |
8329 | else | |
8330 | { | |
8331 | off = (h->elf.root.u.def.value | |
8332 | + h->elf.root.u.def.section->output_offset | |
8333 | + h->elf.root.u.def.section->output_section->vma); | |
8334 | r->r_addend -= off; | |
8335 | } | |
8336 | } | |
8337 | } | |
721956f4 | 8338 | break; |
e86ce104 | 8339 | |
721956f4 | 8340 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8341 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8342 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8343 | stub_entry->root.string + 9, | |
b34976b6 | 8344 | FALSE, FALSE); |
721956f4 AM |
8345 | if (br_entry == NULL) |
8346 | { | |
8347 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8348 | stub_entry->root.string); |
b34976b6 AM |
8349 | htab->stub_error = TRUE; |
8350 | return FALSE; | |
721956f4 AM |
8351 | } |
8352 | ||
8353 | off = (stub_entry->target_value | |
8354 | + stub_entry->target_section->output_offset | |
8355 | + stub_entry->target_section->output_section->vma); | |
8356 | ||
4ce794b7 AM |
8357 | bfd_put_64 (htab->brlt->owner, off, |
8358 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8359 | |
ee75fd95 | 8360 | if (htab->relbrlt != NULL) |
721956f4 AM |
8361 | { |
8362 | /* Create a reloc for the branch lookup table entry. */ | |
8363 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8364 | bfd_byte *rl; |
5d1634d7 | 8365 | |
721956f4 | 8366 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8367 | + htab->brlt->output_offset |
8368 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8369 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8370 | rela.r_addend = off; | |
8371 | ||
4ce794b7 AM |
8372 | rl = htab->relbrlt->contents; |
8373 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8374 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 | 8375 | } |
84f5d08e AM |
8376 | else 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 (htab->brlt); | |
8382 | relocs = elfsec_data->relocs; | |
8383 | if (relocs == NULL) | |
8384 | { | |
8385 | bfd_size_type relsize; | |
8386 | relsize = htab->brlt->reloc_count * sizeof (*relocs); | |
8387 | relocs = bfd_alloc (htab->brlt->owner, relsize); | |
8388 | if (relocs == NULL) | |
8389 | return FALSE; | |
8390 | elfsec_data->relocs = relocs; | |
8391 | elfsec_data->rel_hdr.sh_size = relsize; | |
8392 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8393 | htab->brlt->reloc_count = 0; | |
8394 | } | |
8395 | r = relocs + htab->brlt->reloc_count; | |
8396 | htab->brlt->reloc_count += 1; | |
8397 | r->r_offset = (br_entry->offset | |
8398 | + htab->brlt->output_offset | |
8399 | + htab->brlt->output_section->vma); | |
8400 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
8401 | r->r_addend = off; | |
8402 | } | |
721956f4 AM |
8403 | |
8404 | off = (br_entry->offset | |
4ce794b7 AM |
8405 | + htab->brlt->output_offset |
8406 | + htab->brlt->output_section->vma | |
8407 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8408 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8409 | |
ad8e1ba5 | 8410 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8411 | { |
8412 | (*_bfd_error_handler) | |
e86ce104 | 8413 | (_("linkage table error against `%s'"), |
721956f4 | 8414 | stub_entry->root.string); |
5d1634d7 | 8415 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8416 | htab->stub_error = TRUE; |
8417 | return FALSE; | |
5d1634d7 | 8418 | } |
41bd81ab | 8419 | |
721956f4 | 8420 | indx = off; |
ad8e1ba5 AM |
8421 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8422 | { | |
97b639ba | 8423 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8424 | loc += 4; |
97b639ba | 8425 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8426 | size = 16; |
8427 | } | |
8428 | else | |
8429 | { | |
8430 | bfd_vma r2off; | |
8431 | ||
8432 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8433 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8434 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8435 | loc += 4; |
97b639ba | 8436 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8437 | loc += 4; |
97b639ba | 8438 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8439 | loc += 4; |
97b639ba | 8440 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8441 | loc += 4; |
97b639ba | 8442 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8443 | size = 28; |
8444 | } | |
8445 | loc += 4; | |
97b639ba | 8446 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8447 | loc += 4; |
97b639ba | 8448 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8449 | break; |
5d1634d7 | 8450 | |
721956f4 | 8451 | case ppc_stub_plt_call: |
c862ae31 AM |
8452 | /* Do the best we can for shared libraries built without |
8453 | exporting ".foo" for each "foo". This can happen when symbol | |
8454 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8455 | if (stub_entry->h->oh != NULL |
8456 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8457 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8458 | { |
8459 | /* Point the symbol at the stub. There may be multiple stubs, | |
8460 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8461 | defined somewhere. Maybe defining the symbol in the stub |
8462 | section is a silly idea. If we didn't do this, htab->top_id | |
8463 | could disappear. */ | |
34814b9f AM |
8464 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8465 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8466 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8467 | } |
8468 | ||
721956f4 | 8469 | /* Now build the stub. */ |
411e1bfb AM |
8470 | off = (bfd_vma) -1; |
8471 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8472 | if (ent->addend == stub_entry->addend) | |
8473 | { | |
8474 | off = ent->plt.offset; | |
8475 | break; | |
8476 | } | |
721956f4 AM |
8477 | if (off >= (bfd_vma) -2) |
8478 | abort (); | |
8479 | ||
8480 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8481 | off += (htab->plt->output_offset |
8482 | + htab->plt->output_section->vma | |
8483 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8484 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8485 | |
ad8e1ba5 | 8486 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8487 | { |
8488 | (*_bfd_error_handler) | |
8489 | (_("linkage table error against `%s'"), | |
8490 | stub_entry->h->elf.root.root.string); | |
8491 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8492 | htab->stub_error = TRUE; |
8493 | return FALSE; | |
721956f4 AM |
8494 | } |
8495 | ||
97b639ba | 8496 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8497 | size = p - loc; |
8498 | break; | |
8499 | ||
8500 | default: | |
8501 | BFD_FAIL (); | |
b34976b6 | 8502 | return FALSE; |
721956f4 AM |
8503 | } |
8504 | ||
eea6121a | 8505 | stub_entry->stub_sec->size += size; |
97b639ba | 8506 | |
ee75fd95 | 8507 | if (htab->emit_stub_syms) |
97b639ba AM |
8508 | { |
8509 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8510 | size_t len1, len2; |
8511 | char *name; | |
8512 | const char *const stub_str[] = { "long_branch", | |
8513 | "long_branch_r2off", | |
8514 | "plt_branch", | |
8515 | "plt_branch_r2off", | |
8516 | "plt_call" }; | |
8517 | ||
8518 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8519 | len2 = strlen (stub_entry->root.string); | |
8520 | name = bfd_malloc (len1 + len2 + 2); | |
8521 | if (name == NULL) | |
8522 | return FALSE; | |
8523 | memcpy (name, stub_entry->root.string, 9); | |
8524 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8525 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8526 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8527 | if (h == NULL) |
8528 | return FALSE; | |
8529 | if (h->root.type == bfd_link_hash_new) | |
8530 | { | |
8531 | h->root.type = bfd_link_hash_defined; | |
8532 | h->root.u.def.section = stub_entry->stub_sec; | |
8533 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8534 | h->ref_regular = 1; |
8535 | h->def_regular = 1; | |
8536 | h->ref_regular_nonweak = 1; | |
8537 | h->forced_local = 1; | |
8538 | h->non_elf = 0; | |
97b639ba AM |
8539 | } |
8540 | } | |
8541 | ||
b34976b6 | 8542 | return TRUE; |
721956f4 AM |
8543 | } |
8544 | ||
8545 | /* As above, but don't actually build the stub. Just bump offset so | |
8546 | we know stub section sizes, and select plt_branch stubs where | |
8547 | long_branch stubs won't do. */ | |
8548 | ||
b34976b6 | 8549 | static bfd_boolean |
4ce794b7 | 8550 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8551 | { |
8552 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8553 | struct bfd_link_info *info; |
721956f4 AM |
8554 | struct ppc_link_hash_table *htab; |
8555 | bfd_vma off; | |
8556 | int size; | |
8557 | ||
8558 | /* Massage our args to the form they really have. */ | |
8559 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8560 | info = in_arg; |
8561 | ||
8562 | htab = ppc_hash_table (info); | |
721956f4 AM |
8563 | |
8564 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8565 | { | |
411e1bfb | 8566 | struct plt_entry *ent; |
58ac9f71 | 8567 | off = (bfd_vma) -1; |
411e1bfb AM |
8568 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8569 | if (ent->addend == stub_entry->addend) | |
8570 | { | |
8571 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8572 | break; | |
8573 | } | |
58ac9f71 | 8574 | if (off >= (bfd_vma) -2) |
411e1bfb | 8575 | abort (); |
4ce794b7 AM |
8576 | off += (htab->plt->output_offset |
8577 | + htab->plt->output_section->vma | |
8578 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8579 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8580 | |
ad8e1ba5 | 8581 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8582 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8583 | size += 4; |
8584 | } | |
8585 | else | |
8586 | { | |
ad8e1ba5 AM |
8587 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8588 | variants. */ | |
721956f4 AM |
8589 | off = (stub_entry->target_value |
8590 | + stub_entry->target_section->output_offset | |
8591 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8592 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8593 | + stub_entry->stub_sec->output_offset |
8594 | + stub_entry->stub_sec->output_section->vma); | |
8595 | ||
ad8e1ba5 AM |
8596 | /* Reset the stub type from the plt variant in case we now |
8597 | can reach with a shorter stub. */ | |
8598 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8599 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8600 | ||
8601 | size = 4; | |
8602 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8603 | { | |
8604 | off -= 12; | |
8605 | size = 16; | |
8606 | } | |
8607 | ||
8608 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8609 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8610 | { | |
8611 | struct ppc_branch_hash_entry *br_entry; | |
8612 | ||
8613 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8614 | stub_entry->root.string + 9, | |
b34976b6 | 8615 | TRUE, FALSE); |
721956f4 AM |
8616 | if (br_entry == NULL) |
8617 | { | |
8618 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8619 | stub_entry->root.string); |
b34976b6 AM |
8620 | htab->stub_error = TRUE; |
8621 | return FALSE; | |
721956f4 AM |
8622 | } |
8623 | ||
8624 | if (br_entry->iter != htab->stub_iteration) | |
8625 | { | |
8626 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8627 | br_entry->offset = htab->brlt->size; |
8628 | htab->brlt->size += 8; | |
63bc6f6c | 8629 | |
ee75fd95 | 8630 | if (htab->relbrlt != NULL) |
eea6121a | 8631 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
8632 | else if (info->emitrelocations) |
8633 | { | |
8634 | htab->brlt->reloc_count += 1; | |
8635 | htab->brlt->flags |= SEC_RELOC; | |
8636 | } | |
721956f4 | 8637 | } |
ad8e1ba5 AM |
8638 | |
8639 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8640 | size = 16; |
ad8e1ba5 AM |
8641 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8642 | size = 28; | |
721956f4 | 8643 | } |
84f5d08e AM |
8644 | else if (info->emitrelocations) |
8645 | { | |
8646 | stub_entry->stub_sec->reloc_count += 1; | |
8647 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
8648 | } | |
721956f4 AM |
8649 | } |
8650 | ||
eea6121a | 8651 | stub_entry->stub_sec->size += size; |
b34976b6 | 8652 | return TRUE; |
721956f4 AM |
8653 | } |
8654 | ||
8655 | /* Set up various things so that we can make a list of input sections | |
8656 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8657 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8658 | |
8659 | int | |
4c52953f AM |
8660 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8661 | struct bfd_link_info *info, | |
8662 | int no_multi_toc) | |
721956f4 AM |
8663 | { |
8664 | bfd *input_bfd; | |
734b6cf9 | 8665 | int top_id, top_index, id; |
721956f4 | 8666 | asection *section; |
734b6cf9 | 8667 | asection **input_list; |
721956f4 AM |
8668 | bfd_size_type amt; |
8669 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8670 | ||
4c52953f AM |
8671 | htab->no_multi_toc = no_multi_toc; |
8672 | ||
4ce794b7 | 8673 | if (htab->brlt == NULL) |
721956f4 AM |
8674 | return 0; |
8675 | ||
1e2f5b6e | 8676 | /* Find the top input section id. */ |
3d6f9012 | 8677 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8678 | input_bfd != NULL; |
8679 | input_bfd = input_bfd->link_next) | |
8680 | { | |
721956f4 AM |
8681 | for (section = input_bfd->sections; |
8682 | section != NULL; | |
8683 | section = section->next) | |
8684 | { | |
8685 | if (top_id < section->id) | |
8686 | top_id = section->id; | |
8687 | } | |
8688 | } | |
721956f4 | 8689 | |
8f3bab57 | 8690 | htab->top_id = top_id; |
721956f4 | 8691 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8692 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8693 | if (htab->stub_group == NULL) |
8694 | return -1; | |
8695 | ||
3d6f9012 AM |
8696 | /* Set toc_off for com, und, abs and ind sections. */ |
8697 | for (id = 0; id < 3; id++) | |
8698 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8699 | |
3d6f9012 | 8700 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8701 | |
8702 | /* We can't use output_bfd->section_count here to find the top output | |
8703 | section index as some sections may have been removed, and | |
8423293d | 8704 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8705 | for (section = output_bfd->sections, top_index = 0; |
8706 | section != NULL; | |
8707 | section = section->next) | |
8708 | { | |
8709 | if (top_index < section->index) | |
8710 | top_index = section->index; | |
8711 | } | |
8712 | ||
8713 | htab->top_index = top_index; | |
8714 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8715 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8716 | htab->input_list = input_list; |
8717 | if (input_list == NULL) | |
8718 | return -1; | |
8719 | ||
721956f4 AM |
8720 | return 1; |
8721 | } | |
8722 | ||
e717da7e AM |
8723 | /* The linker repeatedly calls this function for each TOC input section |
8724 | and linker generated GOT section. Group input bfds such that the toc | |
8725 | within a group is less than 64k in size. Will break with cute linker | |
8726 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8727 | |
8728 | void | |
4ce794b7 | 8729 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8730 | { |
8731 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8732 | ||
4c52953f AM |
8733 | if (!htab->no_multi_toc) |
8734 | { | |
8735 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8736 | bfd_vma off = addr - htab->toc_curr; | |
8737 | ||
8738 | if (off + isec->size > 0x10000) | |
8739 | htab->toc_curr = addr; | |
99877b66 | 8740 | |
4c52953f AM |
8741 | elf_gp (isec->owner) = (htab->toc_curr |
8742 | - elf_gp (isec->output_section->owner) | |
8743 | + TOC_BASE_OFF); | |
8744 | } | |
ad8e1ba5 AM |
8745 | } |
8746 | ||
8747 | /* Called after the last call to the above function. */ | |
8748 | ||
8749 | void | |
4c52953f | 8750 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8751 | { |
8752 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8753 | |
4c52953f AM |
8754 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8755 | ||
ad8e1ba5 AM |
8756 | /* toc_curr tracks the TOC offset used for code sections below in |
8757 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8758 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8759 | } |
8760 | ||
9b5ecbd0 AM |
8761 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8762 | calls, then there's no need to use toc adjusting stubs when branching | |
8763 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8764 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8765 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8766 | for a stub was detected. If called from the top level, a return of | |
8767 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8768 | |
8769 | static int | |
4ce794b7 | 8770 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8771 | { |
4c52953f AM |
8772 | Elf_Internal_Rela *relstart, *rel; |
8773 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8774 | int ret; |
4c52953f | 8775 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8776 | |
772119ce AM |
8777 | /* We know none of our code bearing sections will need toc stubs. */ |
8778 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8779 | return 0; | |
8780 | ||
eea6121a | 8781 | if (isec->size == 0) |
082c50f8 AM |
8782 | return 0; |
8783 | ||
4c52953f AM |
8784 | if (isec->output_section == NULL) |
8785 | return 0; | |
8786 | ||
9b5ecbd0 AM |
8787 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8788 | the function that hit an exception. */ | |
4c52953f AM |
8789 | if (strcmp (isec->name, ".fixup") == 0) |
8790 | return 0; | |
9b5ecbd0 | 8791 | |
4c52953f AM |
8792 | if (isec->reloc_count == 0) |
8793 | return 0; | |
8794 | ||
8795 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8796 | info->keep_memory); | |
8797 | if (relstart == NULL) | |
8798 | return -1; | |
8799 | ||
8800 | /* Look for branches to outside of this section. */ | |
8801 | local_syms = NULL; | |
8802 | ret = 0; | |
8803 | htab = ppc_hash_table (info); | |
8804 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8805 | { |
4c52953f AM |
8806 | enum elf_ppc64_reloc_type r_type; |
8807 | unsigned long r_symndx; | |
8808 | struct elf_link_hash_entry *h; | |
8809 | Elf_Internal_Sym *sym; | |
8810 | asection *sym_sec; | |
8811 | long *opd_adjust; | |
8812 | bfd_vma sym_value; | |
8813 | bfd_vma dest; | |
8814 | ||
8815 | r_type = ELF64_R_TYPE (rel->r_info); | |
8816 | if (r_type != R_PPC64_REL24 | |
8817 | && r_type != R_PPC64_REL14 | |
8818 | && r_type != R_PPC64_REL14_BRTAKEN | |
8819 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8820 | continue; | |
8821 | ||
8822 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8823 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8824 | isec->owner)) | |
9b5ecbd0 | 8825 | { |
4c52953f AM |
8826 | ret = -1; |
8827 | break; | |
9b5ecbd0 | 8828 | } |
9b5ecbd0 | 8829 | |
2917689a AM |
8830 | /* Calls to dynamic lib functions go through a plt call stub |
8831 | that uses r2. Branches to undefined symbols might be a call | |
8832 | using old-style dot symbols that can be satisfied by a plt | |
8833 | call into a new-style dynamic library. */ | |
4c52953f | 8834 | if (sym_sec == NULL) |
2917689a AM |
8835 | { |
8836 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8837 | if (eh != NULL | |
8838 | && eh->oh != NULL | |
8839 | && eh->oh->elf.plt.plist != NULL) | |
8840 | { | |
8841 | ret = 1; | |
8842 | break; | |
8843 | } | |
4c52953f | 8844 | |
2917689a AM |
8845 | /* Ignore other undefined symbols. */ |
8846 | continue; | |
8847 | } | |
8848 | ||
8849 | /* Assume branches to other sections not included in the link need | |
8850 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8851 | if (sym_sec->output_section == NULL) |
8852 | { | |
8853 | ret = 1; | |
8854 | break; | |
8855 | } | |
8856 | ||
8857 | if (h == NULL) | |
8858 | sym_value = sym->st_value; | |
8859 | else | |
8860 | { | |
8861 | if (h->root.type != bfd_link_hash_defined | |
8862 | && h->root.type != bfd_link_hash_defweak) | |
8863 | abort (); | |
8864 | sym_value = h->root.u.def.value; | |
8865 | } | |
8866 | sym_value += rel->r_addend; | |
8867 | ||
8868 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8869 | opd_adjust = get_opd_info (sym_sec); | |
8870 | if (opd_adjust != NULL) | |
8871 | { | |
4c52953f AM |
8872 | if (h == NULL) |
8873 | { | |
8874 | long adjust; | |
8875 | ||
8876 | adjust = opd_adjust[sym->st_value / 8]; | |
8877 | if (adjust == -1) | |
8878 | /* Assume deleted functions won't ever be called. */ | |
8879 | continue; | |
8880 | sym_value += adjust; | |
8881 | } | |
8882 | ||
8883 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8884 | if (dest == (bfd_vma) -1) | |
8885 | continue; | |
8886 | } | |
8887 | else | |
8888 | dest = (sym_value | |
8889 | + sym_sec->output_offset | |
8890 | + sym_sec->output_section->vma); | |
8891 | ||
8892 | /* Ignore branch to self. */ | |
8893 | if (sym_sec == isec) | |
8894 | continue; | |
8895 | ||
8896 | /* If the called function uses the toc, we need a stub. */ | |
8897 | if (sym_sec->has_toc_reloc | |
8898 | || sym_sec->makes_toc_func_call) | |
8899 | { | |
8900 | ret = 1; | |
8901 | break; | |
8902 | } | |
8903 | ||
8904 | /* Assume any branch that needs a long branch stub might in fact | |
8905 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8906 | else if (dest - (isec->output_offset | |
8907 | + isec->output_section->vma | |
8908 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8909 | { |
8910 | ret = 1; | |
8911 | break; | |
8912 | } | |
4c52953f AM |
8913 | |
8914 | /* If calling back to a section in the process of being tested, we | |
8915 | can't say for sure that no toc adjusting stubs are needed, so | |
8916 | don't return zero. */ | |
8917 | else if (sym_sec->call_check_in_progress) | |
8918 | ret = 2; | |
8919 | ||
8920 | /* Branches to another section that itself doesn't have any TOC | |
8921 | references are OK. Recursively call ourselves to check. */ | |
8922 | else if (sym_sec->id <= htab->top_id | |
8923 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8924 | { | |
8925 | int recur; | |
8926 | ||
8927 | /* Mark current section as indeterminate, so that other | |
8928 | sections that call back to current won't be marked as | |
8929 | known. */ | |
8930 | isec->call_check_in_progress = 1; | |
8931 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8932 | isec->call_check_in_progress = 0; | |
8933 | ||
8934 | if (recur < 0) | |
8935 | { | |
8936 | /* An error. Exit. */ | |
8937 | ret = -1; | |
8938 | break; | |
8939 | } | |
8940 | else if (recur <= 1) | |
8941 | { | |
8942 | /* Known result. Mark as checked and set section flag. */ | |
8943 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8944 | if (recur != 0) | |
8945 | { | |
8946 | sym_sec->makes_toc_func_call = 1; | |
8947 | ret = 1; | |
8948 | break; | |
8949 | } | |
8950 | } | |
8951 | else | |
8952 | { | |
8953 | /* Unknown result. Continue checking. */ | |
8954 | ret = 2; | |
8955 | } | |
8956 | } | |
9b5ecbd0 AM |
8957 | } |
8958 | ||
4c52953f AM |
8959 | if (local_syms != NULL |
8960 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8961 | != (unsigned char *) local_syms)) | |
8962 | free (local_syms); | |
8963 | if (elf_section_data (isec)->relocs != relstart) | |
8964 | free (relstart); | |
8965 | ||
9b5ecbd0 AM |
8966 | return ret; |
8967 | } | |
8968 | ||
721956f4 AM |
8969 | /* The linker repeatedly calls this function for each input section, |
8970 | in the order that input sections are linked into output sections. | |
8971 | Build lists of input sections to determine groupings between which | |
8972 | we may insert linker stubs. */ | |
8973 | ||
9b5ecbd0 | 8974 | bfd_boolean |
4ce794b7 | 8975 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8976 | { |
8977 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8978 | ||
734b6cf9 AM |
8979 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8980 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8981 | { |
734b6cf9 | 8982 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8983 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8984 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8985 | /* This happens to make the list in reverse order, |
8986 | which is what we want. */ | |
734b6cf9 AM |
8987 | PREV_SEC (isec) = *list; |
8988 | *list = isec; | |
721956f4 | 8989 | } |
ad8e1ba5 | 8990 | |
4c52953f | 8991 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8992 | { |
4c52953f AM |
8993 | /* If a code section has a function that uses the TOC then we need |
8994 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8995 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8996 | can't find their function symbol (shouldn't ever happen now). */ | |
8997 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8998 | { | |
8999 | if (elf_gp (isec->owner) != 0) | |
9000 | htab->toc_curr = elf_gp (isec->owner); | |
9001 | } | |
9002 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9003 | { | |
9004 | int ret = toc_adjusting_stub_needed (info, isec); | |
9005 | if (ret < 0) | |
9006 | return FALSE; | |
9007 | else | |
9008 | isec->makes_toc_func_call = ret & 1; | |
9009 | } | |
9b5ecbd0 | 9010 | } |
ad8e1ba5 AM |
9011 | |
9012 | /* Functions that don't use the TOC can belong in any TOC group. | |
9013 | Use the last TOC base. This happens to make _init and _fini | |
9014 | pasting work. */ | |
9015 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9016 | return TRUE; |
721956f4 AM |
9017 | } |
9018 | ||
9019 | /* See whether we can group stub sections together. Grouping stub | |
9020 | sections may result in fewer stubs. More importantly, we need to | |
9021 | put all .init* and .fini* stubs at the beginning of the .init or | |
9022 | .fini output sections respectively, because glibc splits the | |
9023 | _init and _fini functions into multiple parts. Putting a stub in | |
9024 | the middle of a function is not a good idea. */ | |
9025 | ||
9026 | static void | |
4ce794b7 AM |
9027 | group_sections (struct ppc_link_hash_table *htab, |
9028 | bfd_size_type stub_group_size, | |
9029 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9030 | { |
7c8fe5c4 AM |
9031 | asection **list; |
9032 | bfd_size_type stub14_group_size; | |
9033 | bfd_boolean suppress_size_errors; | |
9034 | ||
9035 | suppress_size_errors = FALSE; | |
9036 | stub14_group_size = stub_group_size; | |
9037 | if (stub_group_size == 1) | |
9038 | { | |
9039 | /* Default values. */ | |
9040 | if (stubs_always_before_branch) | |
9041 | { | |
9042 | stub_group_size = 0x1e00000; | |
9043 | stub14_group_size = 0x7800; | |
9044 | } | |
9045 | else | |
9046 | { | |
9047 | stub_group_size = 0x1c00000; | |
9048 | stub14_group_size = 0x7000; | |
9049 | } | |
9050 | suppress_size_errors = TRUE; | |
9051 | } | |
9052 | ||
9053 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9054 | do |
721956f4 | 9055 | { |
734b6cf9 AM |
9056 | asection *tail = *list; |
9057 | while (tail != NULL) | |
721956f4 | 9058 | { |
734b6cf9 AM |
9059 | asection *curr; |
9060 | asection *prev; | |
9061 | bfd_size_type total; | |
9062 | bfd_boolean big_sec; | |
9063 | bfd_vma curr_toc; | |
9064 | ||
9065 | curr = tail; | |
eea6121a | 9066 | total = tail->size; |
7c8fe5c4 AM |
9067 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9068 | ? stub14_group_size : stub_group_size); | |
9069 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9070 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9071 | tail->owner, tail); | |
734b6cf9 AM |
9072 | curr_toc = htab->stub_group[tail->id].toc_off; |
9073 | ||
9074 | while ((prev = PREV_SEC (curr)) != NULL | |
9075 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9076 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9077 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9078 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9079 | curr = prev; |
9080 | ||
9081 | /* OK, the size from the start of CURR to the end is less | |
9082 | than stub_group_size and thus can be handled by one stub | |
9083 | section. (or the tail section is itself larger than | |
9084 | stub_group_size, in which case we may be toast.) We | |
9085 | should really be keeping track of the total size of stubs | |
9086 | added here, as stubs contribute to the final output | |
9087 | section size. That's a little tricky, and this way will | |
9088 | only break if stubs added make the total size more than | |
9089 | 2^25, ie. for the default stub_group_size, if stubs total | |
9090 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9091 | do | |
721956f4 AM |
9092 | { |
9093 | prev = PREV_SEC (tail); | |
734b6cf9 | 9094 | /* Set up this stub group. */ |
721956f4 AM |
9095 | htab->stub_group[tail->id].link_sec = curr; |
9096 | } | |
734b6cf9 AM |
9097 | while (tail != curr && (tail = prev) != NULL); |
9098 | ||
9099 | /* But wait, there's more! Input sections up to stub_group_size | |
9100 | bytes before the stub section can be handled by it too. | |
9101 | Don't do this if we have a really large section after the | |
9102 | stubs, as adding more stubs increases the chance that | |
9103 | branches may not reach into the stub section. */ | |
9104 | if (!stubs_always_before_branch && !big_sec) | |
9105 | { | |
9106 | total = 0; | |
9107 | while (prev != NULL | |
9108 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9109 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9110 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9111 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9112 | { | |
9113 | tail = prev; | |
9114 | prev = PREV_SEC (tail); | |
9115 | htab->stub_group[tail->id].link_sec = curr; | |
9116 | } | |
9117 | } | |
9118 | tail = prev; | |
721956f4 AM |
9119 | } |
9120 | } | |
734b6cf9 AM |
9121 | while (list-- != htab->input_list); |
9122 | free (htab->input_list); | |
721956f4 AM |
9123 | #undef PREV_SEC |
9124 | } | |
9125 | ||
721956f4 AM |
9126 | /* Determine and set the size of the stub section for a final link. |
9127 | ||
9128 | The basic idea here is to examine all the relocations looking for | |
9129 | PC-relative calls to a target that is unreachable with a "bl" | |
9130 | instruction. */ | |
9131 | ||
b34976b6 | 9132 | bfd_boolean |
4ce794b7 | 9133 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9134 | struct bfd_link_info *info, |
9135 | bfd_signed_vma group_size, | |
9136 | asection *(*add_stub_section) (const char *, asection *), | |
9137 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9138 | { |
9139 | bfd_size_type stub_group_size; | |
b34976b6 | 9140 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9141 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9142 | ||
9143 | /* Stash our params away. */ | |
721956f4 AM |
9144 | htab->add_stub_section = add_stub_section; |
9145 | htab->layout_sections_again = layout_sections_again; | |
9146 | stubs_always_before_branch = group_size < 0; | |
9147 | if (group_size < 0) | |
9148 | stub_group_size = -group_size; | |
9149 | else | |
9150 | stub_group_size = group_size; | |
721956f4 AM |
9151 | |
9152 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9153 | ||
721956f4 AM |
9154 | while (1) |
9155 | { | |
9156 | bfd *input_bfd; | |
9157 | unsigned int bfd_indx; | |
9158 | asection *stub_sec; | |
721956f4 AM |
9159 | |
9160 | htab->stub_iteration += 1; | |
721956f4 AM |
9161 | |
9162 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9163 | input_bfd != NULL; | |
9164 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9165 | { | |
9166 | Elf_Internal_Shdr *symtab_hdr; | |
9167 | asection *section; | |
6cdc0ccc | 9168 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9169 | |
67f93c31 AM |
9170 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9171 | continue; | |
9172 | ||
721956f4 AM |
9173 | /* We'll need the symbol table in a second. */ |
9174 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
9175 | if (symtab_hdr->sh_info == 0) | |
9176 | continue; | |
9177 | ||
721956f4 AM |
9178 | /* Walk over each section attached to the input bfd. */ |
9179 | for (section = input_bfd->sections; | |
9180 | section != NULL; | |
9181 | section = section->next) | |
9182 | { | |
721956f4 | 9183 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9184 | |
9185 | /* If there aren't any relocs, then there's nothing more | |
9186 | to do. */ | |
9187 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9188 | || (section->flags & SEC_ALLOC) == 0 |
9189 | || (section->flags & SEC_LOAD) == 0 | |
9190 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9191 | || section->reloc_count == 0) |
9192 | continue; | |
9193 | ||
9194 | /* If this section is a link-once section that will be | |
9195 | discarded, then don't create any stubs. */ | |
9196 | if (section->output_section == NULL | |
9197 | || section->output_section->owner != output_bfd) | |
9198 | continue; | |
9199 | ||
1e2f5b6e AM |
9200 | /* Get the relocs. */ |
9201 | internal_relocs | |
4ce794b7 | 9202 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9203 | info->keep_memory); |
721956f4 | 9204 | if (internal_relocs == NULL) |
1e2f5b6e | 9205 | goto error_ret_free_local; |
721956f4 AM |
9206 | |
9207 | /* Now examine each relocation. */ | |
9208 | irela = internal_relocs; | |
9209 | irelaend = irela + section->reloc_count; | |
9210 | for (; irela < irelaend; irela++) | |
9211 | { | |
4ce794b7 AM |
9212 | enum elf_ppc64_reloc_type r_type; |
9213 | unsigned int r_indx; | |
721956f4 AM |
9214 | enum ppc_stub_type stub_type; |
9215 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9216 | asection *sym_sec, *code_sec; |
721956f4 AM |
9217 | bfd_vma sym_value; |
9218 | bfd_vma destination; | |
8843416a | 9219 | bfd_boolean ok_dest; |
721956f4 | 9220 | struct ppc_link_hash_entry *hash; |
8387904d | 9221 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9222 | struct elf_link_hash_entry *h; |
9223 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9224 | char *stub_name; |
9225 | const asection *id_sec; | |
8387904d | 9226 | long *opd_adjust; |
721956f4 AM |
9227 | |
9228 | r_type = ELF64_R_TYPE (irela->r_info); | |
9229 | r_indx = ELF64_R_SYM (irela->r_info); | |
9230 | ||
4ce794b7 | 9231 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9232 | { |
9233 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9234 | goto error_ret_free_internal; |
721956f4 AM |
9235 | } |
9236 | ||
9237 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9238 | if (r_type != R_PPC64_REL24 |
9239 | && r_type != R_PPC64_REL14 | |
9240 | && r_type != R_PPC64_REL14_BRTAKEN | |
9241 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9242 | continue; |
9243 | ||
9244 | /* Now determine the call target, its name, value, | |
9245 | section. */ | |
411e1bfb AM |
9246 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9247 | r_indx, input_bfd)) | |
9248 | goto error_ret_free_internal; | |
9249 | hash = (struct ppc_link_hash_entry *) h; | |
9250 | ||
8843416a | 9251 | ok_dest = FALSE; |
8387904d | 9252 | fdh = NULL; |
7fe2b9a6 | 9253 | sym_value = 0; |
411e1bfb | 9254 | if (hash == NULL) |
721956f4 | 9255 | { |
411e1bfb | 9256 | sym_value = sym->st_value; |
8843416a | 9257 | ok_dest = TRUE; |
721956f4 | 9258 | } |
7fe2b9a6 AM |
9259 | else if (hash->elf.root.type == bfd_link_hash_defined |
9260 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9261 | { | |
9262 | sym_value = hash->elf.root.u.def.value; | |
9263 | if (sym_sec->output_section != NULL) | |
9264 | ok_dest = TRUE; | |
9265 | } | |
9266 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9267 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9268 | { |
99877b66 | 9269 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9270 | use the func descriptor sym instead if it is |
9271 | defined. */ | |
ceb1f1ef | 9272 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9273 | && (fdh = get_fdh (hash, htab)) != NULL) |
9274 | { | |
8387904d AM |
9275 | if (fdh->elf.root.type == bfd_link_hash_defined |
9276 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9277 | { | |
9278 | sym_sec = fdh->elf.root.u.def.section; | |
9279 | sym_value = fdh->elf.root.u.def.value; | |
9280 | if (sym_sec->output_section != NULL) | |
9281 | ok_dest = TRUE; | |
9282 | } | |
99877b66 AM |
9283 | else |
9284 | fdh = NULL; | |
8387904d | 9285 | } |
7fe2b9a6 AM |
9286 | } |
9287 | else | |
9288 | { | |
9289 | bfd_set_error (bfd_error_bad_value); | |
9290 | goto error_ret_free_internal; | |
721956f4 AM |
9291 | } |
9292 | ||
8843416a AM |
9293 | destination = 0; |
9294 | if (ok_dest) | |
9295 | { | |
9296 | sym_value += irela->r_addend; | |
9297 | destination = (sym_value | |
9298 | + sym_sec->output_offset | |
9299 | + sym_sec->output_section->vma); | |
9300 | } | |
9301 | ||
8387904d AM |
9302 | code_sec = sym_sec; |
9303 | opd_adjust = get_opd_info (sym_sec); | |
9304 | if (opd_adjust != NULL) | |
9305 | { | |
9306 | bfd_vma dest; | |
9307 | ||
9308 | if (hash == NULL) | |
9309 | { | |
3f764659 | 9310 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9311 | if (adjust == -1) |
9312 | continue; | |
9313 | sym_value += adjust; | |
9314 | } | |
9315 | dest = opd_entry_value (sym_sec, sym_value, | |
9316 | &code_sec, &sym_value); | |
9317 | if (dest != (bfd_vma) -1) | |
9318 | { | |
9319 | destination = dest; | |
9320 | if (fdh != NULL) | |
9321 | { | |
9322 | /* Fixup old ABI sym to point at code | |
9323 | entry. */ | |
99877b66 | 9324 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9325 | hash->elf.root.u.def.section = code_sec; |
9326 | hash->elf.root.u.def.value = sym_value; | |
9327 | } | |
9328 | } | |
9329 | } | |
9330 | ||
721956f4 AM |
9331 | /* Determine what (if any) linker stub is needed. */ |
9332 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9333 | destination); | |
ad8e1ba5 AM |
9334 | |
9335 | if (stub_type != ppc_stub_plt_call) | |
9336 | { | |
9337 | /* Check whether we need a TOC adjusting stub. | |
9338 | Since the linker pastes together pieces from | |
9339 | different object files when creating the | |
9340 | _init and _fini functions, it may be that a | |
9341 | call to what looks like a local sym is in | |
9342 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9343 | if (code_sec != NULL |
9344 | && code_sec->output_section != NULL | |
9345 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9346 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9347 | && (code_sec->has_toc_reloc |
9348 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9349 | stub_type = ppc_stub_long_branch_r2off; |
9350 | } | |
9351 | ||
721956f4 AM |
9352 | if (stub_type == ppc_stub_none) |
9353 | continue; | |
9354 | ||
411e1bfb AM |
9355 | /* __tls_get_addr calls might be eliminated. */ |
9356 | if (stub_type != ppc_stub_plt_call | |
9357 | && hash != NULL | |
8387904d AM |
9358 | && (hash == htab->tls_get_addr |
9359 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9360 | && section->has_tls_reloc |
9361 | && irela != internal_relocs) | |
9362 | { | |
9363 | /* Get tls info. */ | |
e7b938ca | 9364 | char *tls_mask; |
411e1bfb | 9365 | |
0d4792f7 | 9366 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9367 | irela - 1, input_bfd)) |
9368 | goto error_ret_free_internal; | |
e7b938ca | 9369 | if (*tls_mask != 0) |
411e1bfb AM |
9370 | continue; |
9371 | } | |
9372 | ||
721956f4 AM |
9373 | /* Support for grouping stub sections. */ |
9374 | id_sec = htab->stub_group[section->id].link_sec; | |
9375 | ||
9376 | /* Get the name of this stub. */ | |
9377 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9378 | if (!stub_name) | |
9379 | goto error_ret_free_internal; | |
9380 | ||
9381 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9382 | stub_name, FALSE, FALSE); |
721956f4 AM |
9383 | if (stub_entry != NULL) |
9384 | { | |
9385 | /* The proper stub has already been created. */ | |
9386 | free (stub_name); | |
9387 | continue; | |
9388 | } | |
9389 | ||
9390 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9391 | if (stub_entry == NULL) | |
9392 | { | |
9393 | free (stub_name); | |
6cdc0ccc AM |
9394 | error_ret_free_internal: |
9395 | if (elf_section_data (section)->relocs == NULL) | |
9396 | free (internal_relocs); | |
9397 | error_ret_free_local: | |
9398 | if (local_syms != NULL | |
9399 | && (symtab_hdr->contents | |
9400 | != (unsigned char *) local_syms)) | |
9401 | free (local_syms); | |
b34976b6 | 9402 | return FALSE; |
721956f4 AM |
9403 | } |
9404 | ||
ad8e1ba5 | 9405 | stub_entry->stub_type = stub_type; |
721956f4 | 9406 | stub_entry->target_value = sym_value; |
8387904d | 9407 | stub_entry->target_section = code_sec; |
721956f4 | 9408 | stub_entry->h = hash; |
411e1bfb | 9409 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9410 | |
9411 | if (stub_entry->h != NULL) | |
9412 | htab->stub_globals += 1; | |
721956f4 AM |
9413 | } |
9414 | ||
9415 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9416 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9417 | free (internal_relocs); |
721956f4 | 9418 | } |
6cdc0ccc AM |
9419 | |
9420 | if (local_syms != NULL | |
9421 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9422 | { | |
9423 | if (!info->keep_memory) | |
9424 | free (local_syms); | |
9425 | else | |
9426 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9427 | } | |
721956f4 AM |
9428 | } |
9429 | ||
5c3dead3 | 9430 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9431 | stub sections. */ |
9432 | for (stub_sec = htab->stub_bfd->sections; | |
9433 | stub_sec != NULL; | |
9434 | stub_sec = stub_sec->next) | |
e717da7e | 9435 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9436 | { |
5c3dead3 | 9437 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9438 | stub_sec->size = 0; |
9439 | stub_sec->reloc_count = 0; | |
84f5d08e | 9440 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 9441 | } |
eea6121a AM |
9442 | |
9443 | htab->brlt->size = 0; | |
84f5d08e AM |
9444 | htab->brlt->reloc_count = 0; |
9445 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 9446 | if (htab->relbrlt != NULL) |
eea6121a | 9447 | htab->relbrlt->size = 0; |
721956f4 | 9448 | |
63bc6f6c | 9449 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9450 | |
5c3dead3 AM |
9451 | for (stub_sec = htab->stub_bfd->sections; |
9452 | stub_sec != NULL; | |
9453 | stub_sec = stub_sec->next) | |
9454 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9455 | && stub_sec->rawsize != stub_sec->size) | |
9456 | break; | |
9457 | ||
9458 | /* Exit from this loop when no stubs have been added, and no stubs | |
9459 | have changed size. */ | |
9460 | if (stub_sec == NULL) | |
9461 | break; | |
9462 | ||
721956f4 AM |
9463 | /* Ask the linker to do its stuff. */ |
9464 | (*htab->layout_sections_again) (); | |
9465 | } | |
9466 | ||
c456f082 | 9467 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9468 | section is empty, but it's too late. If we strip sections here, |
9469 | the dynamic symbol table is corrupted since the section symbol | |
9470 | for the stripped section isn't written. */ | |
721956f4 | 9471 | |
b34976b6 | 9472 | return TRUE; |
721956f4 AM |
9473 | } |
9474 | ||
9475 | /* Called after we have determined section placement. If sections | |
805fc799 | 9476 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9477 | |
805fc799 | 9478 | bfd_vma |
4ce794b7 | 9479 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9480 | { |
805fc799 AM |
9481 | asection *s; |
9482 | bfd_vma TOCstart; | |
721956f4 | 9483 | |
805fc799 AM |
9484 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9485 | order. The TOC starts where the first of these sections starts. */ | |
9486 | s = bfd_get_section_by_name (obfd, ".got"); | |
9487 | if (s == NULL) | |
9488 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9489 | if (s == NULL) | |
9490 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9491 | if (s == NULL) | |
9492 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9493 | if (s == NULL) | |
9494 | { | |
9495 | /* This may happen for | |
9496 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9497 | .toc directive | |
9498 | o bad linker script | |
9499 | o --gc-sections and empty TOC sections | |
9500 | ||
9501 | FIXME: Warn user? */ | |
9502 | ||
9503 | /* Look for a likely section. We probably won't even be | |
9504 | using TOCstart. */ | |
9505 | for (s = obfd->sections; s != NULL; s = s->next) | |
9506 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9507 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9508 | break; | |
721956f4 | 9509 | if (s == NULL) |
805fc799 AM |
9510 | for (s = obfd->sections; s != NULL; s = s->next) |
9511 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9512 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9513 | break; | |
721956f4 | 9514 | if (s == NULL) |
805fc799 AM |
9515 | for (s = obfd->sections; s != NULL; s = s->next) |
9516 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9517 | break; | |
721956f4 | 9518 | if (s == NULL) |
805fc799 AM |
9519 | for (s = obfd->sections; s != NULL; s = s->next) |
9520 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9521 | break; | |
9522 | } | |
721956f4 | 9523 | |
805fc799 AM |
9524 | TOCstart = 0; |
9525 | if (s != NULL) | |
9526 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9527 | |
805fc799 | 9528 | return TOCstart; |
721956f4 AM |
9529 | } |
9530 | ||
9531 | /* Build all the stubs associated with the current output file. | |
9532 | The stubs are kept in a hash table attached to the main linker | |
9533 | hash table. This function is called via gldelf64ppc_finish. */ | |
9534 | ||
b34976b6 | 9535 | bfd_boolean |
4ce794b7 AM |
9536 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9537 | struct bfd_link_info *info, | |
9538 | char **stats) | |
5d1634d7 AM |
9539 | { |
9540 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9541 | asection *stub_sec; |
5d1634d7 | 9542 | bfd_byte *p; |
e717da7e | 9543 | int stub_sec_count = 0; |
5d1634d7 | 9544 | |
ad8e1ba5 | 9545 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9546 | |
9547 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9548 | for (stub_sec = htab->stub_bfd->sections; |
9549 | stub_sec != NULL; | |
9550 | stub_sec = stub_sec->next) | |
eea6121a AM |
9551 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9552 | && stub_sec->size != 0) | |
e717da7e | 9553 | { |
eea6121a AM |
9554 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9555 | if (stub_sec->contents == NULL) | |
9556 | return FALSE; | |
9557 | /* We want to check that built size is the same as calculated | |
9558 | size. rawsize is a convenient location to use. */ | |
9559 | stub_sec->rawsize = stub_sec->size; | |
9560 | stub_sec->size = 0; | |
e717da7e | 9561 | } |
5d1634d7 | 9562 | |
23eb7e01 | 9563 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9564 | { |
9f951329 | 9565 | unsigned int indx; |
ad8e1ba5 | 9566 | bfd_vma plt0; |
9f951329 | 9567 | |
721956f4 | 9568 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9569 | if (htab->emit_stub_syms) |
9570 | { | |
9571 | struct elf_link_hash_entry *h; | |
9572 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9573 | if (h == NULL) | |
9574 | return FALSE; | |
9575 | if (h->root.type == bfd_link_hash_new) | |
9576 | { | |
9577 | h->root.type = bfd_link_hash_defined; | |
9578 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9579 | h->root.u.def.value = 8; |
f5385ebf AM |
9580 | h->ref_regular = 1; |
9581 | h->def_regular = 1; | |
9582 | h->ref_regular_nonweak = 1; | |
9583 | h->forced_local = 1; | |
9584 | h->non_elf = 0; | |
97b639ba AM |
9585 | } |
9586 | } | |
4ce794b7 | 9587 | p = htab->glink->contents; |
ee4bf8d2 AM |
9588 | plt0 = (htab->plt->output_section->vma |
9589 | + htab->plt->output_offset | |
9590 | - (htab->glink->output_section->vma | |
9591 | + htab->glink->output_offset | |
9592 | + 16)); | |
9593 | bfd_put_64 (htab->glink->owner, plt0, p); | |
9594 | p += 8; | |
9595 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 9596 | p += 4; |
ee4bf8d2 | 9597 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 9598 | p += 4; |
ee4bf8d2 | 9599 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 9600 | p += 4; |
ee4bf8d2 | 9601 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 9602 | p += 4; |
ee4bf8d2 | 9603 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 9604 | p += 4; |
ee4bf8d2 | 9605 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 9606 | p += 4; |
ee4bf8d2 | 9607 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 9608 | p += 4; |
4ce794b7 | 9609 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9610 | p += 4; |
4ce794b7 | 9611 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9612 | p += 4; |
4ce794b7 | 9613 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9614 | p += 4; |
4ce794b7 | 9615 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 9616 | p += 4; |
ee4bf8d2 AM |
9617 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
9618 | { | |
9619 | bfd_put_32 (htab->glink->owner, NOP, p); | |
9620 | p += 4; | |
9621 | } | |
ad8e1ba5 | 9622 | |
9f951329 AM |
9623 | /* Build the .glink lazy link call stubs. */ |
9624 | indx = 0; | |
eea6121a | 9625 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9626 | { |
9627 | if (indx < 0x8000) | |
9628 | { | |
4ce794b7 | 9629 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9630 | p += 4; |
9631 | } | |
9632 | else | |
9633 | { | |
4ce794b7 | 9634 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9635 | p += 4; |
4ce794b7 | 9636 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9637 | p += 4; |
9638 | } | |
4ce794b7 | 9639 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 9640 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 9641 | indx++; |
9f951329 AM |
9642 | p += 4; |
9643 | } | |
eea6121a | 9644 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9645 | } |
5d1634d7 | 9646 | |
eea6121a | 9647 | if (htab->brlt->size != 0) |
721956f4 | 9648 | { |
4ce794b7 | 9649 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9650 | htab->brlt->size); |
4ce794b7 | 9651 | if (htab->brlt->contents == NULL) |
b34976b6 | 9652 | return FALSE; |
721956f4 | 9653 | } |
ee75fd95 | 9654 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9655 | { |
9656 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9657 | htab->relbrlt->size); |
63bc6f6c AM |
9658 | if (htab->relbrlt->contents == NULL) |
9659 | return FALSE; | |
9660 | } | |
5d1634d7 | 9661 | |
721956f4 AM |
9662 | /* Build the stubs as directed by the stub hash table. */ |
9663 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9664 | |
aa8a7074 AM |
9665 | if (htab->relbrlt != NULL) |
9666 | htab->relbrlt->reloc_count = 0; | |
9667 | ||
721956f4 AM |
9668 | for (stub_sec = htab->stub_bfd->sections; |
9669 | stub_sec != NULL; | |
9670 | stub_sec = stub_sec->next) | |
e717da7e AM |
9671 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9672 | { | |
9673 | stub_sec_count += 1; | |
eea6121a | 9674 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9675 | break; |
9676 | } | |
5d1634d7 | 9677 | |
721956f4 | 9678 | if (stub_sec != NULL |
eea6121a | 9679 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9680 | { |
b34976b6 | 9681 | htab->stub_error = TRUE; |
721956f4 | 9682 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9683 | } |
721956f4 | 9684 | |
d2a300cf AM |
9685 | if (htab->stub_error) |
9686 | return FALSE; | |
9687 | ||
9688 | if (stats != NULL) | |
9689 | { | |
9690 | *stats = bfd_malloc (500); | |
9691 | if (*stats == NULL) | |
9692 | return FALSE; | |
9693 | ||
ee75fd95 | 9694 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9695 | " branch %lu\n" |
9696 | " toc adjust %lu\n" | |
9697 | " long branch %lu\n" | |
9698 | " long toc adj %lu\n" | |
9699 | " plt call %lu"), | |
e717da7e | 9700 | stub_sec_count, |
ee75fd95 | 9701 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9702 | htab->stub_count[ppc_stub_long_branch - 1], |
9703 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9704 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9705 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9706 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9707 | } |
9708 | return TRUE; | |
5bd4f169 AM |
9709 | } |
9710 | ||
99877b66 AM |
9711 | /* This function undoes the changes made by add_symbol_adjust. */ |
9712 | ||
9713 | static bfd_boolean | |
9714 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9715 | { | |
9716 | struct ppc_link_hash_entry *eh; | |
9717 | ||
9718 | if (h->root.type == bfd_link_hash_indirect) | |
9719 | return TRUE; | |
9720 | ||
9721 | if (h->root.type == bfd_link_hash_warning) | |
9722 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9723 | ||
9724 | eh = (struct ppc_link_hash_entry *) h; | |
9725 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9726 | return TRUE; | |
9727 | ||
9728 | eh->elf.root.type = bfd_link_hash_undefined; | |
9729 | return TRUE; | |
9730 | } | |
9731 | ||
9732 | void | |
9733 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9734 | { | |
9735 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9736 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9737 | } | |
9738 | ||
60124e18 AM |
9739 | /* What to do when ld finds relocations against symbols defined in |
9740 | discarded sections. */ | |
9741 | ||
9742 | static unsigned int | |
9743 | ppc64_elf_action_discarded (asection *sec) | |
9744 | { | |
9745 | if (strcmp (".opd", sec->name) == 0) | |
9746 | return 0; | |
9747 | ||
9748 | if (strcmp (".toc", sec->name) == 0) | |
9749 | return 0; | |
9750 | ||
bce50a28 JJ |
9751 | if (strcmp (".toc1", sec->name) == 0) |
9752 | return 0; | |
9753 | ||
60124e18 AM |
9754 | return _bfd_elf_default_action_discarded (sec); |
9755 | } | |
9756 | ||
5bd4f169 AM |
9757 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9758 | to handle the relocations for a section. | |
9759 | ||
9760 | The relocs are always passed as Rela structures; if the section | |
9761 | actually uses Rel structures, the r_addend field will always be | |
9762 | zero. | |
9763 | ||
9764 | This function is responsible for adjust the section contents as | |
9765 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9766 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9767 | necessary. |
9768 | ||
9769 | This function does not have to worry about setting the reloc | |
9770 | address or the reloc symbol index. | |
9771 | ||
9772 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9773 | ||
9774 | LOCAL_SECTIONS is an array giving the section in the input file | |
9775 | corresponding to the st_shndx field of each local symbol. | |
9776 | ||
9777 | The global hash table entry for the global symbols can be found | |
9778 | via elf_sym_hashes (input_bfd). | |
9779 | ||
1049f94e | 9780 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9781 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9782 | going to be the section symbol corresponding to the output | |
9783 | section, which means that the addend must be adjusted | |
9784 | accordingly. */ | |
9785 | ||
b34976b6 | 9786 | static bfd_boolean |
4ce794b7 AM |
9787 | ppc64_elf_relocate_section (bfd *output_bfd, |
9788 | struct bfd_link_info *info, | |
9789 | bfd *input_bfd, | |
9790 | asection *input_section, | |
9791 | bfd_byte *contents, | |
9792 | Elf_Internal_Rela *relocs, | |
9793 | Elf_Internal_Sym *local_syms, | |
9794 | asection **local_sections) | |
5bd4f169 | 9795 | { |
65f38f15 | 9796 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9797 | Elf_Internal_Shdr *symtab_hdr; |
9798 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9799 | Elf_Internal_Rela *rel; |
9800 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9801 | Elf_Internal_Rela outrel; |
9802 | bfd_byte *loc; | |
411e1bfb | 9803 | struct got_entry **local_got_ents; |
5bd4f169 | 9804 | bfd_vma TOCstart; |
b34976b6 AM |
9805 | bfd_boolean ret = TRUE; |
9806 | bfd_boolean is_opd; | |
96e0dda4 | 9807 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9808 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 9809 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 9810 | |
65f38f15 | 9811 | /* Initialize howto table if needed. */ |
5bd4f169 | 9812 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9813 | ppc_howto_init (); |
9814 | ||
65f38f15 | 9815 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9816 | |
9817 | /* Don't relocate stub sections. */ | |
9818 | if (input_section->owner == htab->stub_bfd) | |
9819 | return TRUE; | |
9820 | ||
411e1bfb | 9821 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9822 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9823 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9824 | sym_hashes = elf_sym_hashes (input_bfd); | |
7c8fe5c4 | 9825 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 9826 | |
5bd4f169 AM |
9827 | rel = relocs; |
9828 | relend = relocs + input_section->reloc_count; | |
9829 | for (; rel < relend; rel++) | |
9830 | { | |
04c9666a | 9831 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9832 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9833 | bfd_reloc_status_type r; |
9834 | Elf_Internal_Sym *sym; | |
9835 | asection *sec; | |
039b3fef AM |
9836 | struct elf_link_hash_entry *h_elf; |
9837 | struct ppc_link_hash_entry *h; | |
9838 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9839 | const char *sym_name; |
0d4792f7 | 9840 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9841 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9842 | char sym_type; |
5bd4f169 | 9843 | bfd_vma relocation; |
b34976b6 AM |
9844 | bfd_boolean unresolved_reloc; |
9845 | bfd_boolean warned; | |
50bc7936 | 9846 | unsigned long insn, mask; |
721956f4 AM |
9847 | struct ppc_stub_hash_entry *stub_entry; |
9848 | bfd_vma max_br_offset; | |
9849 | bfd_vma from; | |
5bd4f169 | 9850 | |
4ce794b7 | 9851 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9852 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9853 | |
9854 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9855 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9856 | proper TOC base to use. */ | |
9857 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9858 | && rel != relocs | |
9859 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9860 | && is_opd) | |
9861 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9862 | ||
4ce794b7 AM |
9863 | sym = NULL; |
9864 | sec = NULL; | |
039b3fef | 9865 | h_elf = NULL; |
4ce794b7 | 9866 | sym_name = NULL; |
b34976b6 AM |
9867 | unresolved_reloc = FALSE; |
9868 | warned = FALSE; | |
4cc603a5 | 9869 | orig_addend = rel->r_addend; |
65f38f15 | 9870 | |
0b13192e | 9871 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9872 | { |
9873 | /* It's a local symbol. */ | |
4025353c AM |
9874 | long *opd_adjust; |
9875 | ||
5bd4f169 AM |
9876 | sym = local_syms + r_symndx; |
9877 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9878 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9879 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9880 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9881 | opd_adjust = get_opd_info (sec); |
9882 | if (opd_adjust != NULL) | |
1e2f5b6e | 9883 | { |
3f764659 | 9884 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9885 | if (adjust == -1) |
9886 | relocation = 0; | |
9887 | else | |
4cc603a5 AM |
9888 | { |
9889 | /* If this is a relocation against the opd section sym | |
9890 | and we have edited .opd, adjust the reloc addend so | |
9891 | that ld -r and ld --emit-relocs output is correct. | |
9892 | If it is a reloc against some other .opd symbol, | |
9893 | then the symbol value will be adjusted later. */ | |
9894 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9895 | rel->r_addend += adjust; | |
9896 | else | |
9897 | relocation += adjust; | |
9898 | } | |
1e2f5b6e | 9899 | } |
5bd4f169 AM |
9900 | } |
9901 | else | |
9902 | { | |
b2a8e766 AM |
9903 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9904 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9905 | h_elf, sec, relocation, |
b2a8e766 | 9906 | unresolved_reloc, warned); |
039b3fef AM |
9907 | sym_name = h_elf->root.root.string; |
9908 | sym_type = h_elf->type; | |
5bd4f169 | 9909 | } |
039b3fef | 9910 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9911 | |
ab96bf03 AM |
9912 | if (sec != NULL && elf_discarded_section (sec)) |
9913 | { | |
9914 | /* For relocs against symbols from removed linkonce sections, | |
9915 | or sections discarded by a linker script, we just want the | |
9916 | section contents zeroed. Avoid any special processing. */ | |
9917 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
9918 | contents + rel->r_offset); | |
9919 | rel->r_info = 0; | |
9920 | rel->r_addend = 0; | |
9921 | continue; | |
9922 | } | |
9923 | ||
9924 | if (info->relocatable) | |
9925 | continue; | |
9926 | ||
951fd09b AM |
9927 | /* TLS optimizations. Replace instruction sequences and relocs |
9928 | based on information we collected in tls_optimize. We edit | |
9929 | RELOCS so that --emit-relocs will output something sensible | |
9930 | for the final instruction stream. */ | |
9931 | tls_mask = 0; | |
9932 | tls_gd = 0; | |
0d4792f7 | 9933 | toc_symndx = 0; |
d881513a | 9934 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9935 | { |
9936 | if (h != NULL) | |
039b3fef | 9937 | tls_mask = h->tls_mask; |
411e1bfb AM |
9938 | else if (local_got_ents != NULL) |
9939 | { | |
e7b938ca AM |
9940 | char *lgot_masks; |
9941 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9942 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9943 | } |
0d4792f7 AM |
9944 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9945 | { | |
9946 | /* Check for toc tls entries. */ | |
9947 | char *toc_tls; | |
9948 | ||
9949 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9950 | rel, input_bfd)) | |
9951 | return FALSE; | |
9952 | ||
9953 | if (toc_tls) | |
9954 | tls_mask = *toc_tls; | |
9955 | } | |
9956 | } | |
9957 | ||
9958 | /* Check that tls relocs are used with tls syms, and non-tls | |
9959 | relocs are used with non-tls syms. */ | |
9960 | if (r_symndx != 0 | |
9961 | && r_type != R_PPC64_NONE | |
9962 | && (h == NULL | |
039b3fef AM |
9963 | || h->elf.root.type == bfd_link_hash_defined |
9964 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9965 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9966 | { | |
9967 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9968 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9969 | ; | |
9970 | else | |
9971 | (*_bfd_error_handler) | |
9972 | (sym_type == STT_TLS | |
d003868e AM |
9973 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9974 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9975 | input_bfd, | |
9976 | input_section, | |
0d4792f7 AM |
9977 | (long) rel->r_offset, |
9978 | ppc64_elf_howto_table[r_type]->name, | |
9979 | sym_name); | |
411e1bfb AM |
9980 | } |
9981 | ||
9982 | /* Ensure reloc mapping code below stays sane. */ | |
9983 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9984 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9985 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9986 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9987 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9988 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9989 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9990 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9991 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9992 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9993 | abort (); | |
0d4792f7 | 9994 | |
411e1bfb AM |
9995 | switch (r_type) |
9996 | { | |
9997 | default: | |
411e1bfb AM |
9998 | break; |
9999 | ||
10000 | case R_PPC64_TOC16: | |
10001 | case R_PPC64_TOC16_LO: | |
10002 | case R_PPC64_TOC16_DS: | |
10003 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10004 | { |
10005 | /* Check for toc tls entries. */ | |
10006 | char *toc_tls; | |
951fd09b | 10007 | int retval; |
411e1bfb | 10008 | |
0d4792f7 AM |
10009 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
10010 | rel, input_bfd); | |
951fd09b | 10011 | if (retval == 0) |
411e1bfb AM |
10012 | return FALSE; |
10013 | ||
10014 | if (toc_tls) | |
10015 | { | |
951fd09b | 10016 | tls_mask = *toc_tls; |
411e1bfb AM |
10017 | if (r_type == R_PPC64_TOC16_DS |
10018 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10019 | { |
10020 | if (tls_mask != 0 | |
10021 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10022 | goto toctprel; | |
10023 | } | |
411e1bfb | 10024 | else |
951fd09b AM |
10025 | { |
10026 | /* If we found a GD reloc pair, then we might be | |
10027 | doing a GD->IE transition. */ | |
10028 | if (retval == 2) | |
10029 | { | |
10030 | tls_gd = TLS_TPRELGD; | |
10031 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10032 | goto tls_get_addr_check; | |
10033 | } | |
10034 | else if (retval == 3) | |
10035 | { | |
10036 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10037 | goto tls_get_addr_check; | |
10038 | } | |
10039 | } | |
411e1bfb AM |
10040 | } |
10041 | } | |
10042 | break; | |
10043 | ||
10044 | case R_PPC64_GOT_TPREL16_DS: | |
10045 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10046 | if (tls_mask != 0 |
10047 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10048 | { |
81407a69 | 10049 | toctprel: |
4fe5ca5b | 10050 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10051 | insn &= 31 << 21; |
10052 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10053 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10054 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10055 | if (toc_symndx != 0) |
10056 | { | |
10057 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10058 | /* We changed the symbol. Start over in order to | |
10059 | get h, sym, sec etc. right. */ | |
10060 | rel--; | |
10061 | continue; | |
10062 | } | |
10063 | else | |
10064 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10065 | } |
10066 | break; | |
10067 | ||
10068 | case R_PPC64_TLS: | |
951fd09b AM |
10069 | if (tls_mask != 0 |
10070 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10071 | { |
50bc7936 | 10072 | bfd_vma rtra; |
411e1bfb | 10073 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10074 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10075 | == ((31 << 26) | (13 << 11))) |
10076 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10077 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10078 | == ((31 << 26) | (13 << 16))) |
10079 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10080 | else | |
10081 | abort (); | |
10082 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10083 | /* add -> addi. */ | |
10084 | insn = 14 << 26; | |
10085 | else if ((insn & (31 << 1)) == 23 << 1 | |
10086 | && ((insn & (31 << 6)) < 14 << 6 | |
10087 | || ((insn & (31 << 6)) >= 16 << 6 | |
10088 | && (insn & (31 << 6)) < 24 << 6))) | |
10089 | /* load and store indexed -> dform. */ | |
10090 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10091 | else if ((insn & (31 << 1)) == 21 << 1 | |
10092 | && (insn & (0x1a << 6)) == 0) | |
10093 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10094 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10095 | | ((insn >> 6) & 1)); | |
10096 | else if ((insn & (31 << 1)) == 21 << 1 | |
10097 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10098 | /* lwax -> lwa. */ | |
10099 | insn = (58 << 26) | 2; | |
10100 | else | |
10101 | abort (); | |
10102 | insn |= rtra; | |
10103 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10104 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10105 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10106 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10107 | r_type = R_PPC64_TPREL16_LO; |
10108 | if (toc_symndx != 0) | |
10109 | { | |
10110 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10111 | /* We changed the symbol. Start over in order to | |
10112 | get h, sym, sec etc. right. */ | |
10113 | rel--; | |
10114 | continue; | |
10115 | } | |
10116 | else | |
10117 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10118 | } |
10119 | break; | |
10120 | ||
411e1bfb AM |
10121 | case R_PPC64_GOT_TLSGD16_HI: |
10122 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10123 | tls_gd = TLS_TPRELGD; |
10124 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10125 | goto tls_gdld_hi; | |
10126 | break; | |
10127 | ||
411e1bfb AM |
10128 | case R_PPC64_GOT_TLSLD16_HI: |
10129 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10130 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10131 | { |
951fd09b AM |
10132 | tls_gdld_hi: |
10133 | if ((tls_mask & tls_gd) != 0) | |
10134 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10135 | + R_PPC64_GOT_TPREL16_DS); | |
10136 | else | |
411e1bfb | 10137 | { |
951fd09b | 10138 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10139 | rel->r_offset -= d_offset; |
951fd09b | 10140 | r_type = R_PPC64_NONE; |
411e1bfb | 10141 | } |
951fd09b | 10142 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10143 | } |
10144 | break; | |
10145 | ||
951fd09b AM |
10146 | case R_PPC64_GOT_TLSGD16: |
10147 | case R_PPC64_GOT_TLSGD16_LO: | |
10148 | tls_gd = TLS_TPRELGD; | |
10149 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10150 | goto tls_get_addr_check; | |
10151 | break; | |
411e1bfb | 10152 | |
951fd09b AM |
10153 | case R_PPC64_GOT_TLSLD16: |
10154 | case R_PPC64_GOT_TLSLD16_LO: | |
10155 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10156 | { | |
10157 | tls_get_addr_check: | |
10158 | if (rel + 1 < relend) | |
411e1bfb | 10159 | { |
951fd09b AM |
10160 | enum elf_ppc64_reloc_type r_type2; |
10161 | unsigned long r_symndx2; | |
10162 | struct elf_link_hash_entry *h2; | |
10163 | bfd_vma insn1, insn2, insn3; | |
10164 | bfd_vma offset; | |
10165 | ||
10166 | /* The next instruction should be a call to | |
10167 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 10168 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
10169 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
10170 | if (r_symndx2 < symtab_hdr->sh_info | |
10171 | || (r_type2 != R_PPC64_REL14 | |
10172 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
10173 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
10174 | && r_type2 != R_PPC64_REL24)) | |
10175 | break; | |
10176 | ||
10177 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
10178 | while (h2->root.type == bfd_link_hash_indirect | |
10179 | || h2->root.type == bfd_link_hash_warning) | |
10180 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
10181 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
10182 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
10183 | break; |
10184 | ||
10185 | /* OK, it checks out. Replace the call. */ | |
10186 | offset = rel[1].r_offset; | |
10187 | insn1 = bfd_get_32 (output_bfd, | |
4fe5ca5b | 10188 | contents + rel->r_offset - d_offset); |
951fd09b AM |
10189 | insn3 = bfd_get_32 (output_bfd, |
10190 | contents + offset + 4); | |
10191 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10192 | { |
951fd09b AM |
10193 | /* IE */ |
10194 | insn1 &= (1 << 26) - (1 << 2); | |
10195 | insn1 |= 58 << 26; /* ld */ | |
10196 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10197 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
10198 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10199 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10200 | + R_PPC64_GOT_TPREL16_DS); | |
10201 | else | |
10202 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
10203 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10204 | } |
10205 | else | |
951fd09b AM |
10206 | { |
10207 | /* LE */ | |
10208 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10209 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10210 | if (tls_gd == 0) | |
10211 | { | |
10212 | /* Was an LD reloc. */ | |
10213 | r_symndx = 0; | |
e1918d23 AM |
10214 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
10215 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10216 | } |
0d4792f7 AM |
10217 | else if (toc_symndx != 0) |
10218 | r_symndx = toc_symndx; | |
951fd09b AM |
10219 | r_type = R_PPC64_TPREL16_HA; |
10220 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10221 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10222 | R_PPC64_TPREL16_LO); | |
4fe5ca5b | 10223 | rel[1].r_offset += d_offset; |
951fd09b AM |
10224 | } |
10225 | if (insn3 == NOP | |
10226 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10227 | { | |
10228 | insn3 = insn2; | |
10229 | insn2 = NOP; | |
10230 | rel[1].r_offset += 4; | |
10231 | } | |
4fe5ca5b | 10232 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset); |
951fd09b AM |
10233 | bfd_put_32 (output_bfd, insn2, contents + offset); |
10234 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 10235 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 10236 | { |
0d4792f7 AM |
10237 | /* We changed the symbol. Start over in order |
10238 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
10239 | rel--; |
10240 | continue; | |
10241 | } | |
411e1bfb | 10242 | } |
411e1bfb | 10243 | } |
411e1bfb AM |
10244 | break; |
10245 | ||
10246 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10247 | if (rel + 1 < relend |
10248 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10249 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10250 | { |
951fd09b AM |
10251 | if ((tls_mask & TLS_GD) == 0) |
10252 | { | |
10253 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10254 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10255 | r_type = R_PPC64_TPREL64; | |
10256 | else | |
10257 | { | |
4ce794b7 | 10258 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10259 | r_type = R_PPC64_NONE; |
10260 | } | |
10261 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10262 | } | |
10263 | } | |
10264 | else | |
10265 | { | |
10266 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10267 | { |
4ce794b7 | 10268 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10269 | r_type = R_PPC64_NONE; |
951fd09b | 10270 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10271 | } |
411e1bfb AM |
10272 | } |
10273 | break; | |
10274 | ||
10275 | case R_PPC64_TPREL64: | |
951fd09b | 10276 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10277 | { |
10278 | r_type = R_PPC64_NONE; | |
10279 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10280 | } | |
10281 | break; | |
10282 | } | |
10283 | ||
10284 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10285 | insn = 0; |
b25116a9 AM |
10286 | max_br_offset = 1 << 25; |
10287 | addend = rel->r_addend; | |
65f38f15 | 10288 | switch (r_type) |
5bd4f169 AM |
10289 | { |
10290 | default: | |
65f38f15 | 10291 | break; |
5bd4f169 | 10292 | |
65f38f15 AM |
10293 | /* Branch taken prediction relocations. */ |
10294 | case R_PPC64_ADDR14_BRTAKEN: | |
10295 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10296 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10297 | /* Fall thru. */ | |
65f38f15 | 10298 | |
86c76c7b | 10299 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10300 | case R_PPC64_ADDR14_BRNTAKEN: |
10301 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10302 | insn |= bfd_get_32 (output_bfd, |
10303 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10304 | /* Fall thru. */ |
86c76c7b | 10305 | |
b25116a9 AM |
10306 | case R_PPC64_REL14: |
10307 | max_br_offset = 1 << 15; | |
10308 | /* Fall thru. */ | |
5bd4f169 | 10309 | |
65f38f15 | 10310 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10311 | /* Calls to functions with a different TOC, such as calls to |
10312 | shared objects, need to alter the TOC pointer. This is | |
10313 | done using a linkage stub. A REL24 branching to these | |
10314 | linkage stubs needs to be followed by a nop, as the nop | |
10315 | will be replaced with an instruction to restore the TOC | |
10316 | base pointer. */ | |
b25116a9 | 10317 | stub_entry = NULL; |
8387904d | 10318 | fdh = h; |
ad8e1ba5 | 10319 | if (((h != NULL |
039b3fef AM |
10320 | && (((fdh = h->oh) != NULL |
10321 | && fdh->elf.plt.plist != NULL) | |
10322 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10323 | || (sec != NULL |
ad8e1ba5 | 10324 | && sec->output_section != NULL |
b25116a9 | 10325 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10326 | && (htab->stub_group[sec->id].toc_off |
10327 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10328 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10329 | rel, htab)) != NULL |
10330 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10331 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10332 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10333 | { |
b25116a9 | 10334 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10335 | |
eea6121a | 10336 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10337 | { |
b25116a9 AM |
10338 | unsigned long nop; |
10339 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10340 | if (nop == NOP | |
10341 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10342 | { |
4ce794b7 | 10343 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10344 | contents + rel->r_offset + 4); |
b25116a9 | 10345 | can_plt_call = TRUE; |
41bd81ab | 10346 | } |
5bd4f169 | 10347 | } |
721956f4 AM |
10348 | |
10349 | if (!can_plt_call) | |
10350 | { | |
ad8e1ba5 AM |
10351 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10352 | { | |
10353 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10354 | and link, don't require a nop. However, don't |
10355 | allow tail calls in a shared library as they | |
10356 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10357 | unsigned long br; |
10358 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10359 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10360 | can_plt_call = TRUE; |
15b552e9 AM |
10361 | else |
10362 | stub_entry = NULL; | |
ad8e1ba5 | 10363 | } |
6ab189d5 | 10364 | else if (h != NULL |
039b3fef | 10365 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10366 | ".__libc_start_main") == 0) |
10367 | { | |
10368 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10369 | can_plt_call = TRUE; |
6ab189d5 | 10370 | } |
ad8e1ba5 AM |
10371 | else |
10372 | { | |
10373 | if (strcmp (input_section->output_section->name, | |
10374 | ".init") == 0 | |
10375 | || strcmp (input_section->output_section->name, | |
10376 | ".fini") == 0) | |
10377 | (*_bfd_error_handler) | |
d003868e | 10378 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10379 | "not supported using your crt files; " |
10380 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10381 | input_bfd, |
10382 | input_section, | |
ad8e1ba5 AM |
10383 | (long) rel->r_offset); |
10384 | else | |
10385 | (*_bfd_error_handler) | |
d003868e | 10386 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10387 | "does not allow automatic multiple TOCs; " |
10388 | "recompile with -mminimal-toc or " | |
10389 | "-fno-optimize-sibling-calls, " | |
10390 | "or make `%s' extern"), | |
d003868e AM |
10391 | input_bfd, |
10392 | input_section, | |
ad8e1ba5 AM |
10393 | (long) rel->r_offset, |
10394 | sym_name, | |
10395 | sym_name); | |
10396 | bfd_set_error (bfd_error_bad_value); | |
10397 | ret = FALSE; | |
10398 | } | |
721956f4 AM |
10399 | } |
10400 | ||
b25116a9 AM |
10401 | if (can_plt_call |
10402 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10403 | unresolved_reloc = FALSE; | |
10404 | } | |
10405 | ||
8387904d AM |
10406 | if (stub_entry == NULL |
10407 | && get_opd_info (sec) != NULL) | |
10408 | { | |
10409 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10410 | bfd_vma off = (relocation + addend |
10411 | - sec->output_section->vma | |
10412 | - sec->output_offset); | |
8387904d AM |
10413 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10414 | if (dest != (bfd_vma) -1) | |
10415 | { | |
10416 | relocation = dest; | |
10417 | addend = 0; | |
10418 | } | |
10419 | } | |
10420 | ||
b25116a9 AM |
10421 | /* If the branch is out of reach we ought to have a long |
10422 | branch stub. */ | |
10423 | from = (rel->r_offset | |
10424 | + input_section->output_offset | |
10425 | + input_section->output_section->vma); | |
10426 | ||
10427 | if (stub_entry == NULL | |
4cc603a5 | 10428 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10429 | >= 2 * max_br_offset) |
10430 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10431 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10432 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10433 | htab); | |
b25116a9 AM |
10434 | |
10435 | if (stub_entry != NULL) | |
10436 | { | |
10437 | /* Munge up the value and addend so that we call the stub | |
10438 | rather than the procedure directly. */ | |
10439 | relocation = (stub_entry->stub_offset | |
10440 | + stub_entry->stub_sec->output_offset | |
10441 | + stub_entry->stub_sec->output_section->vma); | |
10442 | addend = 0; | |
10443 | } | |
10444 | ||
10445 | if (insn != 0) | |
10446 | { | |
10447 | if (is_power4) | |
721956f4 | 10448 | { |
b25116a9 AM |
10449 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10450 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10451 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10452 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10453 | insn |= 0x02 << 21; | |
10454 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10455 | insn |= 0x08 << 21; | |
10456 | else | |
10457 | break; | |
10458 | } | |
10459 | else | |
10460 | { | |
10461 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10462 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10463 | insn ^= 0x01 << 21; |
721956f4 | 10464 | } |
b25116a9 AM |
10465 | |
10466 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10467 | } |
e86ce104 | 10468 | |
06da1e8e AM |
10469 | /* NOP out calls to undefined weak functions. |
10470 | We can thus call a weak function without first | |
10471 | checking whether the function is defined. */ | |
b25116a9 | 10472 | else if (h != NULL |
039b3fef | 10473 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10474 | && r_type == R_PPC64_REL24 |
10475 | && relocation == 0 | |
4cc603a5 | 10476 | && addend == 0) |
e86ce104 | 10477 | { |
06da1e8e AM |
10478 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10479 | continue; | |
e86ce104 | 10480 | } |
65f38f15 AM |
10481 | break; |
10482 | } | |
5bd4f169 | 10483 | |
65f38f15 | 10484 | /* Set `addend'. */ |
411e1bfb | 10485 | tls_type = 0; |
65f38f15 AM |
10486 | switch (r_type) |
10487 | { | |
10488 | default: | |
10489 | (*_bfd_error_handler) | |
d003868e AM |
10490 | (_("%B: unknown relocation type %d for symbol %s"), |
10491 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10492 | |
65f38f15 | 10493 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10494 | ret = FALSE; |
65f38f15 | 10495 | continue; |
5bd4f169 | 10496 | |
65f38f15 | 10497 | case R_PPC64_NONE: |
411e1bfb | 10498 | case R_PPC64_TLS: |
04c9666a AM |
10499 | case R_PPC64_GNU_VTINHERIT: |
10500 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10501 | continue; |
5bd4f169 AM |
10502 | |
10503 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10504 | address in the GOT as relocation value instead of the | |
411e1bfb | 10505 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10506 | symbol and put the symbol value there. */ |
411e1bfb AM |
10507 | case R_PPC64_GOT_TLSGD16: |
10508 | case R_PPC64_GOT_TLSGD16_LO: | |
10509 | case R_PPC64_GOT_TLSGD16_HI: | |
10510 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10511 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10512 | goto dogot; |
10513 | ||
10514 | case R_PPC64_GOT_TLSLD16: | |
10515 | case R_PPC64_GOT_TLSLD16_LO: | |
10516 | case R_PPC64_GOT_TLSLD16_HI: | |
10517 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10518 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10519 | goto dogot; |
10520 | ||
10521 | case R_PPC64_GOT_TPREL16_DS: | |
10522 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10523 | case R_PPC64_GOT_TPREL16_HI: | |
10524 | case R_PPC64_GOT_TPREL16_HA: | |
10525 | tls_type = TLS_TLS | TLS_TPREL; | |
10526 | goto dogot; | |
10527 | ||
10528 | case R_PPC64_GOT_DTPREL16_DS: | |
10529 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10530 | case R_PPC64_GOT_DTPREL16_HI: | |
10531 | case R_PPC64_GOT_DTPREL16_HA: | |
10532 | tls_type = TLS_TLS | TLS_DTPREL; | |
10533 | goto dogot; | |
10534 | ||
65f38f15 AM |
10535 | case R_PPC64_GOT16: |
10536 | case R_PPC64_GOT16_LO: | |
10537 | case R_PPC64_GOT16_HI: | |
10538 | case R_PPC64_GOT16_HA: | |
10539 | case R_PPC64_GOT16_DS: | |
10540 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10541 | dogot: |
5bd4f169 AM |
10542 | { |
10543 | /* Relocation is to the entry for this symbol in the global | |
10544 | offset table. */ | |
e717da7e | 10545 | asection *got; |
d881513a | 10546 | bfd_vma *offp; |
5bd4f169 | 10547 | bfd_vma off; |
d881513a | 10548 | unsigned long indx = 0; |
65f38f15 | 10549 | |
d881513a AM |
10550 | if (tls_type == (TLS_TLS | TLS_LD) |
10551 | && (h == NULL | |
f5385ebf | 10552 | || !h->elf.def_dynamic)) |
e717da7e | 10553 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10554 | else |
5bd4f169 | 10555 | { |
d881513a | 10556 | struct got_entry *ent; |
5bd4f169 | 10557 | |
d881513a AM |
10558 | if (h != NULL) |
10559 | { | |
10560 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10561 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10562 | &h->elf) | |
d881513a | 10563 | || (info->shared |
039b3fef | 10564 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10565 | /* This is actually a static link, or it is a |
10566 | -Bsymbolic link and the symbol is defined | |
10567 | locally, or the symbol was forced to be local | |
10568 | because of a version file. */ | |
10569 | ; | |
10570 | else | |
10571 | { | |
039b3fef | 10572 | indx = h->elf.dynindx; |
d881513a AM |
10573 | unresolved_reloc = FALSE; |
10574 | } | |
039b3fef | 10575 | ent = h->elf.got.glist; |
d881513a | 10576 | } |
411e1bfb | 10577 | else |
5bd4f169 | 10578 | { |
d881513a AM |
10579 | if (local_got_ents == NULL) |
10580 | abort (); | |
10581 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10582 | } |
d881513a AM |
10583 | |
10584 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10585 | if (ent->addend == orig_addend |
e717da7e | 10586 | && ent->owner == input_bfd |
d881513a AM |
10587 | && ent->tls_type == tls_type) |
10588 | break; | |
10589 | if (ent == NULL) | |
10590 | abort (); | |
10591 | offp = &ent->got.offset; | |
5bd4f169 | 10592 | } |
411e1bfb | 10593 | |
e717da7e AM |
10594 | got = ppc64_elf_tdata (input_bfd)->got; |
10595 | if (got == NULL) | |
10596 | abort (); | |
10597 | ||
411e1bfb AM |
10598 | /* The offset must always be a multiple of 8. We use the |
10599 | least significant bit to record whether we have already | |
10600 | processed this entry. */ | |
d881513a | 10601 | off = *offp; |
411e1bfb AM |
10602 | if ((off & 1) != 0) |
10603 | off &= ~1; | |
5bd4f169 AM |
10604 | else |
10605 | { | |
411e1bfb AM |
10606 | /* Generate relocs for the dynamic linker, except in |
10607 | the case of TLSLD where we'll use one entry per | |
10608 | module. */ | |
e717da7e AM |
10609 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10610 | ||
d881513a | 10611 | *offp = off | 1; |
4e795f50 AM |
10612 | if ((info->shared || indx != 0) |
10613 | && (h == NULL | |
039b3fef AM |
10614 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10615 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10616 | { |
e717da7e AM |
10617 | outrel.r_offset = (got->output_section->vma |
10618 | + got->output_offset | |
411e1bfb | 10619 | + off); |
4cc603a5 | 10620 | outrel.r_addend = addend; |
d881513a | 10621 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10622 | { |
411e1bfb | 10623 | outrel.r_addend = 0; |
e515b051 | 10624 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10625 | if (tls_type == (TLS_TLS | TLS_GD)) |
10626 | { | |
e717da7e AM |
10627 | loc = relgot->contents; |
10628 | loc += (relgot->reloc_count++ | |
d881513a AM |
10629 | * sizeof (Elf64_External_Rela)); |
10630 | bfd_elf64_swap_reloca_out (output_bfd, | |
10631 | &outrel, loc); | |
e515b051 | 10632 | outrel.r_offset += 8; |
4cc603a5 | 10633 | outrel.r_addend = addend; |
d881513a AM |
10634 | outrel.r_info |
10635 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10636 | } |
411e1bfb | 10637 | } |
951fd09b | 10638 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10639 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10640 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10641 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10642 | else if (indx == 0) | |
81407a69 AM |
10643 | { |
10644 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10645 | ||
10646 | /* Write the .got section contents for the sake | |
10647 | of prelink. */ | |
e717da7e | 10648 | loc = got->contents + off; |
23fbd6fa JJ |
10649 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10650 | loc); | |
81407a69 | 10651 | } |
411e1bfb AM |
10652 | else |
10653 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10654 | |
10655 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10656 | { |
10657 | outrel.r_addend += relocation; | |
10658 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10659 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10660 | } |
e717da7e AM |
10661 | loc = relgot->contents; |
10662 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10663 | * sizeof (Elf64_External_Rela)); |
10664 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10665 | } | |
10666 | ||
ad8e1ba5 | 10667 | /* Init the .got section contents here if we're not |
81407a69 | 10668 | emitting a reloc. */ |
d881513a | 10669 | else |
411e1bfb | 10670 | { |
4cc603a5 | 10671 | relocation += addend; |
7b609f53 AM |
10672 | if (tls_type == (TLS_TLS | TLS_LD)) |
10673 | relocation = 1; | |
10674 | else if (tls_type != 0) | |
411e1bfb | 10675 | { |
e1918d23 | 10676 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10677 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10678 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10679 | |
7b609f53 AM |
10680 | if (tls_type == (TLS_TLS | TLS_GD)) |
10681 | { | |
10682 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10683 | got->contents + off + 8); |
7b609f53 AM |
10684 | relocation = 1; |
10685 | } | |
411e1bfb | 10686 | } |
7b609f53 | 10687 | |
411e1bfb | 10688 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10689 | got->contents + off); |
5bd4f169 AM |
10690 | } |
10691 | } | |
10692 | ||
65f38f15 AM |
10693 | if (off >= (bfd_vma) -2) |
10694 | abort (); | |
10695 | ||
e717da7e | 10696 | relocation = got->output_offset + off; |
65f38f15 | 10697 | |
5bd4f169 | 10698 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10699 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10700 | } |
65f38f15 AM |
10701 | break; |
10702 | ||
10703 | case R_PPC64_PLT16_HA: | |
10704 | case R_PPC64_PLT16_HI: | |
10705 | case R_PPC64_PLT16_LO: | |
10706 | case R_PPC64_PLT32: | |
10707 | case R_PPC64_PLT64: | |
10708 | /* Relocation is to the entry for this symbol in the | |
10709 | procedure linkage table. */ | |
10710 | ||
10711 | /* Resolve a PLT reloc against a local symbol directly, | |
10712 | without using the procedure linkage table. */ | |
10713 | if (h == NULL) | |
10714 | break; | |
10715 | ||
411e1bfb AM |
10716 | /* It's possible that we didn't make a PLT entry for this |
10717 | symbol. This happens when statically linking PIC code, | |
10718 | or when using -Bsymbolic. Go find a match if there is a | |
10719 | PLT entry. */ | |
4ce794b7 | 10720 | if (htab->plt != NULL) |
65f38f15 | 10721 | { |
411e1bfb | 10722 | struct plt_entry *ent; |
039b3fef | 10723 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10724 | if (ent->addend == orig_addend |
411e1bfb AM |
10725 | && ent->plt.offset != (bfd_vma) -1) |
10726 | { | |
4ce794b7 AM |
10727 | relocation = (htab->plt->output_section->vma |
10728 | + htab->plt->output_offset | |
411e1bfb AM |
10729 | + ent->plt.offset); |
10730 | unresolved_reloc = FALSE; | |
10731 | } | |
65f38f15 | 10732 | } |
65f38f15 | 10733 | break; |
5bd4f169 | 10734 | |
0b13192e AM |
10735 | case R_PPC64_TOC: |
10736 | /* Relocation value is TOC base. */ | |
10737 | relocation = TOCstart; | |
10738 | if (r_symndx == 0) | |
10739 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10740 | else if (unresolved_reloc) |
10741 | ; | |
10742 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10743 | relocation += htab->stub_group[sec->id].toc_off; |
10744 | else | |
10745 | unresolved_reloc = TRUE; | |
ab96bf03 | 10746 | goto dodyn; |
0b13192e | 10747 | |
5bd4f169 AM |
10748 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10749 | which is the address of the start of the TOC plus 0x8000. | |
10750 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10751 | in this order. */ | |
65f38f15 AM |
10752 | case R_PPC64_TOC16: |
10753 | case R_PPC64_TOC16_LO: | |
10754 | case R_PPC64_TOC16_HI: | |
10755 | case R_PPC64_TOC16_DS: | |
10756 | case R_PPC64_TOC16_LO_DS: | |
10757 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10758 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10759 | break; |
10760 | ||
10761 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10762 | case R_PPC64_SECTOFF: |
10763 | case R_PPC64_SECTOFF_LO: | |
10764 | case R_PPC64_SECTOFF_HI: | |
10765 | case R_PPC64_SECTOFF_DS: | |
10766 | case R_PPC64_SECTOFF_LO_DS: | |
10767 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10768 | if (sec != NULL) |
65f38f15 | 10769 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10770 | break; |
10771 | ||
721956f4 AM |
10772 | case R_PPC64_REL14: |
10773 | case R_PPC64_REL14_BRNTAKEN: | |
10774 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10775 | case R_PPC64_REL24: |
10776 | break; | |
10777 | ||
411e1bfb AM |
10778 | case R_PPC64_TPREL16: |
10779 | case R_PPC64_TPREL16_LO: | |
10780 | case R_PPC64_TPREL16_HI: | |
10781 | case R_PPC64_TPREL16_HA: | |
10782 | case R_PPC64_TPREL16_DS: | |
10783 | case R_PPC64_TPREL16_LO_DS: | |
10784 | case R_PPC64_TPREL16_HIGHER: | |
10785 | case R_PPC64_TPREL16_HIGHERA: | |
10786 | case R_PPC64_TPREL16_HIGHEST: | |
10787 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10788 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10789 | if (info->shared) |
10790 | /* The TPREL16 relocs shouldn't really be used in shared | |
10791 | libs as they will result in DT_TEXTREL being set, but | |
10792 | support them anyway. */ | |
10793 | goto dodyn; | |
10794 | break; | |
10795 | ||
10796 | case R_PPC64_DTPREL16: | |
10797 | case R_PPC64_DTPREL16_LO: | |
10798 | case R_PPC64_DTPREL16_HI: | |
10799 | case R_PPC64_DTPREL16_HA: | |
10800 | case R_PPC64_DTPREL16_DS: | |
10801 | case R_PPC64_DTPREL16_LO_DS: | |
10802 | case R_PPC64_DTPREL16_HIGHER: | |
10803 | case R_PPC64_DTPREL16_HIGHERA: | |
10804 | case R_PPC64_DTPREL16_HIGHEST: | |
10805 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10806 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10807 | break; |
10808 | ||
e515b051 AM |
10809 | case R_PPC64_DTPMOD64: |
10810 | relocation = 1; | |
10811 | addend = 0; | |
10812 | goto dodyn; | |
10813 | ||
411e1bfb | 10814 | case R_PPC64_TPREL64: |
e1918d23 | 10815 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10816 | goto dodyn; |
10817 | ||
10818 | case R_PPC64_DTPREL64: | |
e1918d23 | 10819 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10820 | /* Fall thru */ |
10821 | ||
65f38f15 AM |
10822 | /* Relocations that may need to be propagated if this is a |
10823 | dynamic object. */ | |
04c9666a | 10824 | case R_PPC64_REL30: |
65f38f15 AM |
10825 | case R_PPC64_REL32: |
10826 | case R_PPC64_REL64: | |
10827 | case R_PPC64_ADDR14: | |
10828 | case R_PPC64_ADDR14_BRNTAKEN: | |
10829 | case R_PPC64_ADDR14_BRTAKEN: | |
10830 | case R_PPC64_ADDR16: | |
10831 | case R_PPC64_ADDR16_DS: | |
10832 | case R_PPC64_ADDR16_HA: | |
10833 | case R_PPC64_ADDR16_HI: | |
10834 | case R_PPC64_ADDR16_HIGHER: | |
10835 | case R_PPC64_ADDR16_HIGHERA: | |
10836 | case R_PPC64_ADDR16_HIGHEST: | |
10837 | case R_PPC64_ADDR16_HIGHESTA: | |
10838 | case R_PPC64_ADDR16_LO: | |
10839 | case R_PPC64_ADDR16_LO_DS: | |
10840 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10841 | case R_PPC64_ADDR32: |
10842 | case R_PPC64_ADDR64: | |
10843 | case R_PPC64_UADDR16: | |
10844 | case R_PPC64_UADDR32: | |
10845 | case R_PPC64_UADDR64: | |
411e1bfb | 10846 | dodyn: |
5d1634d7 | 10847 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10848 | break; |
10849 | ||
41bd81ab AM |
10850 | if (NO_OPD_RELOCS && is_opd) |
10851 | break; | |
10852 | ||
65f38f15 | 10853 | if ((info->shared |
4e795f50 | 10854 | && (h == NULL |
039b3fef AM |
10855 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10856 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10857 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10858 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10859 | || (ELIMINATE_COPY_RELOCS |
10860 | && !info->shared | |
65f38f15 | 10861 | && h != NULL |
039b3fef | 10862 | && h->elf.dynindx != -1 |
f5385ebf AM |
10863 | && !h->elf.non_got_ref |
10864 | && h->elf.def_dynamic | |
10865 | && !h->elf.def_regular)) | |
65f38f15 AM |
10866 | { |
10867 | Elf_Internal_Rela outrel; | |
b34976b6 | 10868 | bfd_boolean skip, relocate; |
65f38f15 | 10869 | asection *sreloc; |
947216bf | 10870 | bfd_byte *loc; |
1cf1f670 | 10871 | bfd_vma out_off; |
65f38f15 AM |
10872 | |
10873 | /* When generating a dynamic object, these relocations | |
10874 | are copied into the output file to be resolved at run | |
10875 | time. */ | |
10876 | ||
b34976b6 AM |
10877 | skip = FALSE; |
10878 | relocate = FALSE; | |
65f38f15 | 10879 | |
1cf1f670 AM |
10880 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10881 | input_section, rel->r_offset); | |
10882 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10883 | skip = TRUE; |
1cf1f670 | 10884 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10885 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10886 | out_off += (input_section->output_section->vma |
10887 | + input_section->output_offset); | |
10888 | outrel.r_offset = out_off; | |
411e1bfb | 10889 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10890 | |
1cf1f670 AM |
10891 | /* Optimize unaligned reloc use. */ |
10892 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10893 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10894 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10895 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10896 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10897 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10898 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10899 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10900 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10901 | ||
65f38f15 | 10902 | if (skip) |
0bb2d96a | 10903 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10904 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10905 | && !is_opd |
10906 | && r_type != R_PPC64_TOC) | |
039b3fef | 10907 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10908 | else |
10909 | { | |
41bd81ab AM |
10910 | /* This symbol is local, or marked to become local, |
10911 | or this is an opd section reloc which must point | |
10912 | at a local function. */ | |
65f38f15 | 10913 | outrel.r_addend += relocation; |
e86ce104 | 10914 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10915 | { |
3fad3c7c | 10916 | if (is_opd && h != NULL) |
afbe61cf AM |
10917 | { |
10918 | /* Lie about opd entries. This case occurs | |
10919 | when building shared libraries and we | |
10920 | reference a function in another shared | |
3fad3c7c AM |
10921 | lib. The same thing happens for a weak |
10922 | definition in an application that's | |
10923 | overridden by a strong definition in a | |
10924 | shared lib. (I believe this is a generic | |
10925 | bug in binutils handling of weak syms.) | |
10926 | In these cases we won't use the opd | |
1e2f5b6e | 10927 | entry in this lib. */ |
b34976b6 | 10928 | unresolved_reloc = FALSE; |
afbe61cf | 10929 | } |
65f38f15 | 10930 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10931 | |
10932 | /* We need to relocate .opd contents for ld.so. | |
10933 | Prelink also wants simple and consistent rules | |
10934 | for relocs. This make all RELATIVE relocs have | |
10935 | *r_offset equal to r_addend. */ | |
10936 | relocate = TRUE; | |
65f38f15 AM |
10937 | } |
10938 | else | |
10939 | { | |
10940 | long indx = 0; | |
10941 | ||
41bd81ab | 10942 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10943 | ; |
10944 | else if (sec == NULL || sec->owner == NULL) | |
10945 | { | |
10946 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10947 | return FALSE; |
65f38f15 AM |
10948 | } |
10949 | else | |
10950 | { | |
10951 | asection *osec; | |
10952 | ||
10953 | osec = sec->output_section; | |
10954 | indx = elf_section_data (osec)->dynindx; | |
10955 | ||
74541ad4 AM |
10956 | if (indx == 0) |
10957 | { | |
10958 | if ((osec->flags & SEC_READONLY) == 0 | |
10959 | && htab->elf.data_index_section != NULL) | |
10960 | osec = htab->elf.data_index_section; | |
10961 | else | |
10962 | osec = htab->elf.text_index_section; | |
10963 | indx = elf_section_data (osec)->dynindx; | |
10964 | } | |
10965 | BFD_ASSERT (indx != 0); | |
10966 | ||
65f38f15 AM |
10967 | /* We are turning this relocation into one |
10968 | against a section symbol, so subtract out | |
10969 | the output section's address but not the | |
10970 | offset of the input section in the output | |
10971 | section. */ | |
10972 | outrel.r_addend -= osec->vma; | |
10973 | } | |
10974 | ||
10975 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10976 | } | |
10977 | } | |
10978 | ||
10979 | sreloc = elf_section_data (input_section)->sreloc; | |
10980 | if (sreloc == NULL) | |
10981 | abort (); | |
10982 | ||
dfbb6ac9 AM |
10983 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
10984 | >= sreloc->size) | |
10985 | abort (); | |
947216bf AM |
10986 | loc = sreloc->contents; |
10987 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10988 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10989 | ||
10990 | /* If this reloc is against an external symbol, it will | |
10991 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10992 | anything now. However, for the sake of prelink ensure |
10993 | that the section contents are a known value. */ | |
65f38f15 | 10994 | if (! relocate) |
81407a69 AM |
10995 | { |
10996 | unresolved_reloc = FALSE; | |
10997 | /* The value chosen here is quite arbitrary as ld.so | |
10998 | ignores section contents except for the special | |
10999 | case of .opd where the contents might be accessed | |
11000 | before relocation. Choose zero, as that won't | |
11001 | cause reloc overflow. */ | |
11002 | relocation = 0; | |
11003 | addend = 0; | |
11004 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11005 | to improve backward compatibility with older | |
11006 | versions of ld. */ | |
11007 | if (r_type == R_PPC64_ADDR64) | |
11008 | addend = outrel.r_addend; | |
11009 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11010 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11011 | addend = (input_section->output_section->vma |
11012 | + input_section->output_offset | |
11013 | + rel->r_offset); | |
81407a69 | 11014 | } |
65f38f15 | 11015 | } |
5bd4f169 AM |
11016 | break; |
11017 | ||
65f38f15 AM |
11018 | case R_PPC64_COPY: |
11019 | case R_PPC64_GLOB_DAT: | |
11020 | case R_PPC64_JMP_SLOT: | |
11021 | case R_PPC64_RELATIVE: | |
11022 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11023 | files. */ | |
ae9a127f | 11024 | /* Fall through. */ |
65f38f15 AM |
11025 | |
11026 | case R_PPC64_PLTGOT16: | |
11027 | case R_PPC64_PLTGOT16_DS: | |
11028 | case R_PPC64_PLTGOT16_HA: | |
11029 | case R_PPC64_PLTGOT16_HI: | |
11030 | case R_PPC64_PLTGOT16_LO: | |
11031 | case R_PPC64_PLTGOT16_LO_DS: | |
11032 | case R_PPC64_PLTREL32: | |
11033 | case R_PPC64_PLTREL64: | |
11034 | /* These ones haven't been implemented yet. */ | |
11035 | ||
11036 | (*_bfd_error_handler) | |
d003868e AM |
11037 | (_("%B: relocation %s is not supported for symbol %s."), |
11038 | input_bfd, | |
4ce794b7 | 11039 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11040 | |
11041 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11042 | ret = FALSE; |
5bd4f169 | 11043 | continue; |
65f38f15 | 11044 | } |
5bd4f169 | 11045 | |
65f38f15 AM |
11046 | /* Do any further special processing. */ |
11047 | switch (r_type) | |
11048 | { | |
11049 | default: | |
11050 | break; | |
11051 | ||
11052 | case R_PPC64_ADDR16_HA: | |
11053 | case R_PPC64_ADDR16_HIGHERA: | |
11054 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11055 | case R_PPC64_TOC16_HA: |
11056 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11057 | case R_PPC64_TPREL16_HA: |
11058 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11059 | case R_PPC64_TPREL16_HIGHER: |
11060 | case R_PPC64_TPREL16_HIGHERA: | |
11061 | case R_PPC64_TPREL16_HIGHEST: | |
11062 | case R_PPC64_TPREL16_HIGHESTA: | |
11063 | case R_PPC64_DTPREL16_HIGHER: | |
11064 | case R_PPC64_DTPREL16_HIGHERA: | |
11065 | case R_PPC64_DTPREL16_HIGHEST: | |
11066 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11067 | /* It's just possible that this symbol is a weak symbol |
11068 | that's not actually defined anywhere. In that case, | |
11069 | 'sec' would be NULL, and we should leave the symbol | |
11070 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11071 | if (sec == NULL) |
11072 | break; | |
11073 | /* Fall thru */ | |
11074 | ||
11075 | case R_PPC64_GOT16_HA: | |
11076 | case R_PPC64_PLTGOT16_HA: | |
11077 | case R_PPC64_PLT16_HA: | |
11078 | case R_PPC64_GOT_TLSGD16_HA: | |
11079 | case R_PPC64_GOT_TLSLD16_HA: | |
11080 | case R_PPC64_GOT_TPREL16_HA: | |
11081 | case R_PPC64_GOT_DTPREL16_HA: | |
11082 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11083 | Bits 0:15 are not used. */ | |
11084 | addend += 0x8000; | |
65f38f15 AM |
11085 | break; |
11086 | ||
11087 | case R_PPC64_ADDR16_DS: | |
11088 | case R_PPC64_ADDR16_LO_DS: | |
11089 | case R_PPC64_GOT16_DS: | |
11090 | case R_PPC64_GOT16_LO_DS: | |
11091 | case R_PPC64_PLT16_LO_DS: | |
11092 | case R_PPC64_SECTOFF_DS: | |
11093 | case R_PPC64_SECTOFF_LO_DS: | |
11094 | case R_PPC64_TOC16_DS: | |
11095 | case R_PPC64_TOC16_LO_DS: | |
11096 | case R_PPC64_PLTGOT16_DS: | |
11097 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11098 | case R_PPC64_GOT_TPREL16_DS: |
11099 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11100 | case R_PPC64_GOT_DTPREL16_DS: | |
11101 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11102 | case R_PPC64_TPREL16_DS: | |
11103 | case R_PPC64_TPREL16_LO_DS: | |
11104 | case R_PPC64_DTPREL16_DS: | |
11105 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11106 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11107 | mask = 3; | |
11108 | /* If this reloc is against an lq insn, then the value must be | |
11109 | a multiple of 16. This is somewhat of a hack, but the | |
11110 | "correct" way to do this by defining _DQ forms of all the | |
11111 | _DS relocs bloats all reloc switches in this file. It | |
11112 | doesn't seem to make much sense to use any of these relocs | |
11113 | in data, so testing the insn should be safe. */ | |
494dac0c | 11114 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11115 | mask = 15; |
11116 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11117 | { |
11118 | (*_bfd_error_handler) | |
d003868e AM |
11119 | (_("%B: error: relocation %s not a multiple of %d"), |
11120 | input_bfd, | |
4ce794b7 | 11121 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11122 | mask + 1); |
65f38f15 | 11123 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11124 | ret = FALSE; |
65f38f15 AM |
11125 | continue; |
11126 | } | |
11127 | break; | |
5bd4f169 AM |
11128 | } |
11129 | ||
239e1f3a AM |
11130 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11131 | because such sections are not SEC_ALLOC and thus ld.so will | |
11132 | not process them. */ | |
65f38f15 | 11133 | if (unresolved_reloc |
239e1f3a | 11134 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11135 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11136 | { |
11137 | (*_bfd_error_handler) | |
d003868e AM |
11138 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11139 | input_bfd, | |
11140 | input_section, | |
9c07fe7c | 11141 | (long) rel->r_offset, |
7b609f53 | 11142 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11143 | h->elf.root.root.string); |
b34976b6 | 11144 | ret = FALSE; |
9c07fe7c | 11145 | } |
5bd4f169 | 11146 | |
65f38f15 | 11147 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11148 | input_bfd, |
11149 | input_section, | |
11150 | contents, | |
411e1bfb | 11151 | rel->r_offset, |
5bd4f169 AM |
11152 | relocation, |
11153 | addend); | |
11154 | ||
ef60b7ff | 11155 | if (r != bfd_reloc_ok) |
5bd4f169 | 11156 | { |
cd27b276 AM |
11157 | if (sym_name == NULL) |
11158 | sym_name = "(null)"; | |
11159 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11160 | { |
cd27b276 AM |
11161 | if (warned) |
11162 | continue; | |
11163 | if (h != NULL | |
039b3fef | 11164 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11165 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11166 | { |
11167 | /* Assume this is a call protected by other code that | |
11168 | detects the symbol is undefined. If this is the case, | |
11169 | we can safely ignore the overflow. If not, the | |
11170 | program is hosed anyway, and a little warning isn't | |
11171 | going to help. */ | |
11172 | ||
11173 | continue; | |
11174 | } | |
11175 | ||
ef60b7ff | 11176 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11177 | (info, (h ? &h->elf.root : NULL), sym_name, |
11178 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11179 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11180 | return FALSE; |
ef60b7ff AM |
11181 | } |
11182 | else | |
11183 | { | |
11184 | (*_bfd_error_handler) | |
d003868e AM |
11185 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11186 | input_bfd, | |
11187 | input_section, | |
7b609f53 | 11188 | (long) rel->r_offset, |
4ce794b7 | 11189 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11190 | sym_name, |
11191 | (int) r); | |
b34976b6 | 11192 | ret = FALSE; |
ef60b7ff | 11193 | } |
5bd4f169 | 11194 | } |
5bd4f169 AM |
11195 | } |
11196 | ||
645ea6a9 AM |
11197 | /* If we're emitting relocations, then shortly after this function |
11198 | returns, reloc offsets and addends for this section will be | |
11199 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11200 | file rather than the input. Save a copy of the relocs for |
11201 | opd_entry_value. */ | |
4cc603a5 | 11202 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11203 | { |
11204 | bfd_size_type amt; | |
11205 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11206 | rel = bfd_alloc (input_bfd, amt); | |
11207 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11208 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11209 | if (rel == NULL) | |
11210 | return FALSE; | |
11211 | memcpy (rel, relocs, amt); | |
11212 | } | |
5bd4f169 AM |
11213 | return ret; |
11214 | } | |
11215 | ||
754021d0 AM |
11216 | /* Adjust the value of any local symbols in opd sections. */ |
11217 | ||
11218 | static bfd_boolean | |
11219 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11220 | const char *name ATTRIBUTE_UNUSED, | |
11221 | Elf_Internal_Sym *elfsym, | |
11222 | asection *input_sec, | |
11223 | struct elf_link_hash_entry *h) | |
11224 | { | |
4025353c | 11225 | long *opd_adjust, adjust; |
754021d0 AM |
11226 | bfd_vma value; |
11227 | ||
4025353c AM |
11228 | if (h != NULL) |
11229 | return TRUE; | |
11230 | ||
11231 | opd_adjust = get_opd_info (input_sec); | |
11232 | if (opd_adjust == NULL) | |
754021d0 AM |
11233 | return TRUE; |
11234 | ||
11235 | value = elfsym->st_value - input_sec->output_offset; | |
11236 | if (!info->relocatable) | |
11237 | value -= input_sec->output_section->vma; | |
11238 | ||
3f764659 | 11239 | adjust = opd_adjust[value / 8]; |
4025353c AM |
11240 | if (adjust == -1) |
11241 | elfsym->st_value = 0; | |
11242 | else | |
11243 | elfsym->st_value += adjust; | |
754021d0 AM |
11244 | return TRUE; |
11245 | } | |
11246 | ||
5bd4f169 AM |
11247 | /* Finish up dynamic symbol handling. We set the contents of various |
11248 | dynamic sections here. */ | |
11249 | ||
b34976b6 | 11250 | static bfd_boolean |
4ce794b7 AM |
11251 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11252 | struct bfd_link_info *info, | |
11253 | struct elf_link_hash_entry *h, | |
11254 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11255 | { |
65f38f15 | 11256 | struct ppc_link_hash_table *htab; |
8387904d AM |
11257 | struct plt_entry *ent; |
11258 | Elf_Internal_Rela rela; | |
11259 | bfd_byte *loc; | |
5bd4f169 | 11260 | |
65f38f15 | 11261 | htab = ppc_hash_table (info); |
5bd4f169 | 11262 | |
8387904d AM |
11263 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11264 | if (ent->plt.offset != (bfd_vma) -1) | |
11265 | { | |
11266 | /* This symbol has an entry in the procedure linkage | |
11267 | table. Set it up. */ | |
11268 | ||
11269 | if (htab->plt == NULL | |
11270 | || htab->relplt == NULL | |
11271 | || htab->glink == NULL) | |
11272 | abort (); | |
11273 | ||
11274 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11275 | fill in the PLT entry. */ | |
11276 | rela.r_offset = (htab->plt->output_section->vma | |
11277 | + htab->plt->output_offset | |
11278 | + ent->plt.offset); | |
11279 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11280 | rela.r_addend = ent->addend; | |
11281 | ||
11282 | loc = htab->relplt->contents; | |
11283 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11284 | * sizeof (Elf64_External_Rela)); | |
11285 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11286 | } | |
5bd4f169 | 11287 | |
f5385ebf | 11288 | if (h->needs_copy) |
5bd4f169 | 11289 | { |
5bd4f169 | 11290 | Elf_Internal_Rela rela; |
947216bf | 11291 | bfd_byte *loc; |
5bd4f169 | 11292 | |
65f38f15 | 11293 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11294 | |
65f38f15 AM |
11295 | if (h->dynindx == -1 |
11296 | || (h->root.type != bfd_link_hash_defined | |
11297 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11298 | || htab->relbss == NULL) |
65f38f15 | 11299 | abort (); |
5bd4f169 AM |
11300 | |
11301 | rela.r_offset = (h->root.u.def.value | |
11302 | + h->root.u.def.section->output_section->vma | |
11303 | + h->root.u.def.section->output_offset); | |
11304 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11305 | rela.r_addend = 0; | |
4ce794b7 AM |
11306 | loc = htab->relbss->contents; |
11307 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11308 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11309 | } |
11310 | ||
5bd4f169 AM |
11311 | /* Mark some specially defined symbols as absolute. */ |
11312 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11313 | sym->st_shndx = SHN_ABS; | |
11314 | ||
b34976b6 | 11315 | return TRUE; |
5bd4f169 AM |
11316 | } |
11317 | ||
65f38f15 AM |
11318 | /* Used to decide how to sort relocs in an optimal manner for the |
11319 | dynamic linker, before writing them out. */ | |
11320 | ||
11321 | static enum elf_reloc_type_class | |
4ce794b7 | 11322 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11323 | { |
04c9666a | 11324 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11325 | |
4ce794b7 | 11326 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11327 | switch (r_type) |
65f38f15 AM |
11328 | { |
11329 | case R_PPC64_RELATIVE: | |
11330 | return reloc_class_relative; | |
11331 | case R_PPC64_JMP_SLOT: | |
11332 | return reloc_class_plt; | |
11333 | case R_PPC64_COPY: | |
11334 | return reloc_class_copy; | |
11335 | default: | |
11336 | return reloc_class_normal; | |
11337 | } | |
11338 | } | |
11339 | ||
5bd4f169 AM |
11340 | /* Finish up the dynamic sections. */ |
11341 | ||
b34976b6 | 11342 | static bfd_boolean |
4ce794b7 AM |
11343 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11344 | struct bfd_link_info *info) | |
5bd4f169 | 11345 | { |
65f38f15 AM |
11346 | struct ppc_link_hash_table *htab; |
11347 | bfd *dynobj; | |
5bd4f169 | 11348 | asection *sdyn; |
5bd4f169 | 11349 | |
65f38f15 AM |
11350 | htab = ppc_hash_table (info); |
11351 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11352 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11353 | ||
65f38f15 | 11354 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11355 | { |
5bd4f169 AM |
11356 | Elf64_External_Dyn *dyncon, *dynconend; |
11357 | ||
4ce794b7 | 11358 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11359 | abort (); |
5bd4f169 AM |
11360 | |
11361 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11362 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11363 | for (; dyncon < dynconend; dyncon++) |
11364 | { | |
11365 | Elf_Internal_Dyn dyn; | |
19397422 | 11366 | asection *s; |
5bd4f169 AM |
11367 | |
11368 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11369 | ||
11370 | switch (dyn.d_tag) | |
11371 | { | |
65f38f15 AM |
11372 | default: |
11373 | continue; | |
5bd4f169 | 11374 | |
5d1634d7 | 11375 | case DT_PPC64_GLINK: |
4ce794b7 | 11376 | s = htab->glink; |
6348e046 | 11377 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11378 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11379 | of glink rather than the first entry point, which is | |
11380 | what ld.so needs, and now have a bigger stub to | |
11381 | support automatic multiple TOCs. */ | |
11382 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11383 | break; |
11384 | ||
19397422 AM |
11385 | case DT_PPC64_OPD: |
11386 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11387 | if (s == NULL) |
11388 | continue; | |
11389 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11390 | break; |
11391 | ||
11392 | case DT_PPC64_OPDSZ: | |
11393 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11394 | if (s == NULL) |
11395 | continue; | |
eea6121a | 11396 | dyn.d_un.d_val = s->size; |
19397422 AM |
11397 | break; |
11398 | ||
65f38f15 | 11399 | case DT_PLTGOT: |
4ce794b7 | 11400 | s = htab->plt; |
6348e046 | 11401 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11402 | break; |
11403 | ||
11404 | case DT_JMPREL: | |
4ce794b7 | 11405 | s = htab->relplt; |
6348e046 | 11406 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11407 | break; |
5bd4f169 | 11408 | |
65f38f15 | 11409 | case DT_PLTRELSZ: |
eea6121a | 11410 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11411 | break; |
11412 | ||
11413 | case DT_RELASZ: | |
11414 | /* Don't count procedure linkage table relocs in the | |
11415 | overall reloc count. */ | |
4ce794b7 | 11416 | s = htab->relplt; |
6348e046 AM |
11417 | if (s == NULL) |
11418 | continue; | |
eea6121a | 11419 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11420 | break; |
11421 | ||
11422 | case DT_RELA: | |
11423 | /* We may not be using the standard ELF linker script. | |
11424 | If .rela.plt is the first .rela section, we adjust | |
11425 | DT_RELA to not include it. */ | |
4ce794b7 | 11426 | s = htab->relplt; |
6348e046 AM |
11427 | if (s == NULL) |
11428 | continue; | |
11429 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11430 | continue; | |
eea6121a | 11431 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11432 | break; |
5bd4f169 | 11433 | } |
5bd4f169 | 11434 | |
65f38f15 | 11435 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11436 | } |
5bd4f169 AM |
11437 | } |
11438 | ||
eea6121a | 11439 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11440 | { |
11441 | /* Fill in the first entry in the global offset table. | |
11442 | We use it to hold the link-time TOCbase. */ | |
11443 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11444 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11445 | htab->got->contents); |
5d1634d7 AM |
11446 | |
11447 | /* Set .got entry size. */ | |
4ce794b7 | 11448 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11449 | } |
11450 | ||
eea6121a | 11451 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11452 | { |
11453 | /* Set .plt entry size. */ | |
4ce794b7 | 11454 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11455 | = PLT_ENTRY_SIZE; |
11456 | } | |
11457 | ||
84f5d08e AM |
11458 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
11459 | brlt ourselves if emitrelocations. */ | |
11460 | if (htab->brlt != NULL | |
11461 | && htab->brlt->reloc_count != 0 | |
11462 | && !_bfd_elf_link_output_relocs (output_bfd, | |
11463 | htab->brlt, | |
11464 | &elf_section_data (htab->brlt)->rel_hdr, | |
11465 | elf_section_data (htab->brlt)->relocs, | |
11466 | NULL)) | |
11467 | return FALSE; | |
11468 | ||
e717da7e | 11469 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11470 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11471 | bfd. */ | |
e717da7e AM |
11472 | while ((dynobj = dynobj->link_next) != NULL) |
11473 | { | |
11474 | asection *s; | |
7b53ace3 | 11475 | |
ee75fd95 | 11476 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11477 | continue; |
11478 | ||
e717da7e AM |
11479 | s = ppc64_elf_tdata (dynobj)->got; |
11480 | if (s != NULL | |
eea6121a | 11481 | && s->size != 0 |
e717da7e AM |
11482 | && s->output_section != bfd_abs_section_ptr |
11483 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11484 | s->contents, s->output_offset, | |
eea6121a | 11485 | s->size)) |
e717da7e AM |
11486 | return FALSE; |
11487 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11488 | if (s != NULL | |
eea6121a | 11489 | && s->size != 0 |
e717da7e AM |
11490 | && s->output_section != bfd_abs_section_ptr |
11491 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11492 | s->contents, s->output_offset, | |
eea6121a | 11493 | s->size)) |
e717da7e AM |
11494 | return FALSE; |
11495 | } | |
f6c52c13 | 11496 | |
b34976b6 | 11497 | return TRUE; |
5bd4f169 AM |
11498 | } |
11499 | ||
5bd4f169 | 11500 | #include "elf64-target.h" |